From ffe188dd83e84119516688c822388c8f30a54877 Mon Sep 17 00:00:00 2001 From: Peter Schwenke Date: Thu, 17 Jan 2008 23:08:55 +1000 Subject: ata_piix: Add Toshiba Satellite R20 and Tecra M6 to broken suspend list. Add Toshiba Satellite R20 and Tecra M6 to broken suspend list. Matt Piermarini reported and provided the M6 patch. This is from OSDL bug 7780. Signed-off-by: Peter Schwenke Cc: Matt Piermarini Acked-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/ata_piix.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers') diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index b406b39b878e..0d8bd19a5345 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -1033,6 +1033,13 @@ static int piix_broken_suspend(void) DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"), }, }, + { + .ident = "TECRA M6", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), + DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M6"), + }, + }, { .ident = "TECRA M7", .matches = { @@ -1047,6 +1054,13 @@ static int piix_broken_suspend(void) DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A8"), }, }, + { + .ident = "Satellite R20", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), + DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R20"), + }, + }, { .ident = "Satellite R25", .matches = { -- cgit v1.2.3-59-g8ed1b From ae8d4ee7ff429136c8b482c3b38ed994c021d3fc Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Sun, 4 Nov 2007 22:05:49 -0500 Subject: libata: Disable ATA8-ACS proposed Trusted Computing features by default Historically word 48 in the identify data was used to mean 32bit I/O was supported for VLB IDE etc. ATA8 reassigns this word to the Trusted Computing Group, where it is used for TCG features. This means that an ATA8 TCG drive is going to trigger 32bit I/O on some systems which will be funny. Anyway we need to sort this out ready for ATA8 so: - Reorder the ata.h header a bit so the ata_version function occurs early in it - Make dword_io check the ATA version - Add an ATA8 version checking TCG presence test While we are at it the current drafts have a flaw where it may not be possible to disable TCG features at boot (and opt out of the trusted model) as TCG intends because it relies on presence of a different optional feature (DCS). Handle this in software by refusing the TCG commands if libata.allow_tpm is not set. (We must make it possible as some environments such as proprietary VDR devices will doubtless want to use it to lock up content) Finally as with CPRM print a warning so that the user knows they may not be able to full access and use the device. Signed-off-by: Alan Cox --- drivers/ata/libata-core.c | 12 +++++++++++- drivers/ata/libata-scsi.c | 18 ++++++++++++++++++ drivers/ata/libata.h | 1 + include/linux/ata.h | 22 +++++++++++++++++++++- 4 files changed, 51 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 6380726f7538..9b7f3c477730 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -119,6 +119,10 @@ int libata_noacpi = 0; module_param_named(noacpi, libata_noacpi, int, 0444); MODULE_PARM_DESC(noacpi, "Disables the use of ACPI in probe/suspend/resume when set"); +int libata_allow_tpm = 0; +module_param_named(allow_tpm, libata_allow_tpm, int, 0444); +MODULE_PARM_DESC(allow_tpm, "Permit the use of TPM commands"); + MODULE_AUTHOR("Jeff Garzik"); MODULE_DESCRIPTION("Library module for ATA devices"); MODULE_LICENSE("GPL"); @@ -2161,8 +2165,14 @@ int ata_dev_configure(struct ata_device *dev) "supports DRM functions and may " "not be fully accessable.\n"); snprintf(revbuf, 7, "CFA"); - } else + } else { snprintf(revbuf, 7, "ATA-%d", ata_id_major_version(id)); + /* Warn the user if the device has TPM extensions */ + if (ata_id_has_tpm(id)) + ata_dev_printk(dev, KERN_WARNING, + "supports DRM functions and may " + "not be fully accessable.\n"); + } dev->n_sectors = ata_id_n_sectors(id); diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 14daf4848f09..f802dbce41ae 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2690,6 +2690,24 @@ static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN) goto invalid_fld; + /* + * Filter TPM commands by default. These provide an + * essentially uncontrolled encrypted "back door" between + * applications and the disk. Set libata.allow_tpm=1 if you + * have a real reason for wanting to use them. This ensures + * that installed software cannot easily mess stuff up without + * user intent. DVR type users will probably ship with this enabled + * for movie content management. + * + * Note that for ATA8 we can issue a DCS change and DCS freeze lock + * for this and should do in future but that it is not sufficient as + * DCS is an optional feature set. Thus we also do the software filter + * so that we comply with the TC consortium stated goal that the user + * can turn off TC features of their system. + */ + if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) + goto invalid_fld; + /* We may not issue DMA commands if no DMA mode is set */ if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0) goto invalid_fld; diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index bbe59c2fd1e2..048e26cfb339 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -60,6 +60,7 @@ extern int atapi_dmadir; extern int atapi_passthru16; extern int libata_fua; extern int libata_noacpi; +extern int libata_allow_tpm; extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev); extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, u64 block, u32 n_block, unsigned int tf_flags, diff --git a/include/linux/ata.h b/include/linux/ata.h index e672e80202a8..3fbe6d7784ab 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -379,7 +379,6 @@ struct ata_taskfile { #define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) #define ata_id_removeable(id) ((id)[0] & (1 << 7)) -#define ata_id_has_dword_io(id) ((id)[48] & (1 << 0)) #define ata_id_has_atapi_AN(id) \ ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \ ((id)[78] & (1 << 5)) ) @@ -415,6 +414,7 @@ static inline bool ata_id_has_dipm(const u16 *id) return val & (1 << 3); } + static inline int ata_id_has_fua(const u16 *id) { if ((id[84] & 0xC000) != 0x4000) @@ -519,6 +519,26 @@ static inline int ata_id_is_sata(const u16 *id) return ata_id_major_version(id) >= 5 && id[93] == 0; } +static inline int ata_id_has_tpm(const u16 *id) +{ + /* The TPM bits are only valid on ATA8 */ + if (ata_id_major_version(id) < 8) + return 0; + if ((id[48] & 0xC000) != 0x4000) + return 0; + return id[48] & (1 << 0); +} + +static inline int ata_id_has_dword_io(const u16 *id) +{ + /* ATA 8 reuses this flag for "trusted" computing */ + if (ata_id_major_version(id) > 7) + return 0; + if (id[48] & (1 << 0)) + return 1; + return 0; +} + static inline int ata_id_current_chs_valid(const u16 *id) { /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command -- cgit v1.2.3-59-g8ed1b From bd3adca52bc43b72c75db3e4c7809d47923b154c Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Fri, 2 Nov 2007 09:32:38 +0800 Subject: libata-acpi: add ACPI _PSx method ACPI spec (ver 3.0a, p289) requires IDE power on/off executes ACPI _PSx methods. As recently most PATA drivers use libata, this patch adds _PSx method support in libata. ACPI spec doesn't mention if SATA requires the same _PSx method. Signed-off-by: Shaohua Li Acked-by: Len Brown Signed-off-by: Jeff Garzik --- drivers/ata/libata-acpi.c | 30 ++++++++++++++++++++++++++++++ drivers/ata/libata-eh.c | 3 +++ drivers/ata/libata.h | 3 +++ 3 files changed, 36 insertions(+) (limited to 'drivers') diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index 7bf4befd96bc..ebc4dfcf2f19 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -775,6 +775,36 @@ void ata_acpi_on_resume(struct ata_port *ap) } } +/** + * ata_acpi_set_state - set the port power state + * @ap: target ATA port + * @state: state, on/off + * + * This function executes the _PS0/_PS3 ACPI method to set the power state. + * ACPI spec requires _PS0 when IDE power on and _PS3 when power off + */ +void ata_acpi_set_state(struct ata_port *ap, pm_message_t state) +{ + struct ata_device *dev; + + if (!ap->acpi_handle || (ap->flags & ATA_FLAG_ACPI_SATA)) + return; + + /* channel first and then drives for power on and vica versa + for power off */ + if (state.event == PM_EVENT_ON) + acpi_bus_set_power(ap->acpi_handle, ACPI_STATE_D0); + + ata_link_for_each_dev(dev, &ap->link) { + if (dev->acpi_handle && ata_dev_enabled(dev)) + acpi_bus_set_power(dev->acpi_handle, + state.event == PM_EVENT_ON ? + ACPI_STATE_D0 : ACPI_STATE_D3); + } + if (state.event != PM_EVENT_ON) + acpi_bus_set_power(ap->acpi_handle, ACPI_STATE_D3); +} + /** * ata_acpi_on_devcfg - ATA ACPI hook called on device donfiguration * @dev: target ATA device diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 21a81cd148e4..1d7faab64810 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2747,6 +2747,7 @@ static void ata_eh_handle_port_suspend(struct ata_port *ap) if (ap->ops->port_suspend) rc = ap->ops->port_suspend(ap, ap->pm_mesg); + ata_acpi_set_state(ap, PMSG_SUSPEND); out: /* report result */ spin_lock_irqsave(ap->lock, flags); @@ -2792,6 +2793,8 @@ static void ata_eh_handle_port_resume(struct ata_port *ap) WARN_ON(!(ap->pflags & ATA_PFLAG_SUSPENDED)); + ata_acpi_set_state(ap, PMSG_ON); + if (ap->ops->port_resume) rc = ap->ops->port_resume(ap); diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index 048e26cfb339..8cf0874f248b 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -114,6 +114,7 @@ extern int ata_acpi_on_suspend(struct ata_port *ap); extern void ata_acpi_on_resume(struct ata_port *ap); extern int ata_acpi_on_devcfg(struct ata_device *dev); extern void ata_acpi_on_disable(struct ata_device *dev); +extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state); #else static inline void ata_acpi_associate_sata_port(struct ata_port *ap) { } static inline void ata_acpi_associate(struct ata_host *host) { } @@ -122,6 +123,8 @@ static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; } static inline void ata_acpi_on_resume(struct ata_port *ap) { } static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; } static inline void ata_acpi_on_disable(struct ata_device *dev) { } +static inline void ata_acpi_set_state(struct ata_port *ap, + pm_message_t state) { } #endif /* libata-scsi.c */ -- cgit v1.2.3-59-g8ed1b From b9f8ab2dafba2dc12dd94e5d2db31d5cf495775f Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 19 Nov 2007 14:33:11 +0000 Subject: libata: IORDY handling I believe this version meets all Sergei's objections Correct the logic for when we issue a set features for transfer mode - If the device has IORDY and the controller has IORDY - set the mode - If the device has IORDY and the controller does not - turn IORDY off - If neither has IORDY do nothing Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 9b7f3c477730..3dd0e942df36 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4373,7 +4373,14 @@ static unsigned int ata_dev_set_xfermode(struct ata_device *dev) tf.feature = SETFEATURES_XFER; tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_POLLING; tf.protocol = ATA_PROT_NODATA; - tf.nsect = dev->xfer_mode; + /* If we are using IORDY we must send the mode setting command */ + if (ata_pio_need_iordy(dev)) + tf.nsect = dev->xfer_mode; + /* If the device has IORDY and the controller does not - turn it off */ + else if (ata_id_has_iordy(dev->id)) + tf.nsect = 0x01; + else /* In the ancient relic department - skip all of this */ + return 0; err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0); -- cgit v1.2.3-59-g8ed1b From 76548eda8c47e50260bc87196d40b26ce7a7bcd6 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 19 Nov 2007 14:34:56 +0000 Subject: libata-sff: tf_load Jeff said he preferred that the SFF tf_load followed the spec and we documented that anyone who needed different overrode it, rather than it using the ->check_status methods. No driver relies on the current behaviour. Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/libata-sff.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index b7ac80b4b1fb..fd5fe4e7e75a 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -147,7 +147,9 @@ void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf) * @tf: ATA taskfile register set for storing input * * Reads ATA taskfile registers for currently-selected device - * into @tf. + * into @tf. Assumes the device has a fully SFF compliant task file + * layout and behaviour. If you device does not (eg has a different + * status method) then you will need to provide a replacement tf_read * * LOCKING: * Inherited from caller. @@ -156,7 +158,7 @@ void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf) { struct ata_ioports *ioaddr = &ap->ioaddr; - tf->command = ata_chk_status(ap); + tf->command = ata_check_status(ap); tf->feature = ioread8(ioaddr->error_addr); tf->nsect = ioread8(ioaddr->nsect_addr); tf->lbal = ioread8(ioaddr->lbal_addr); -- cgit v1.2.3-59-g8ed1b From 51dbd490614e6228e9b2b198bd4f5f76ef961059 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 19 Nov 2007 14:45:53 +0000 Subject: pata_ninja32: Cardbus ATA initial support Lots of work needed to bring it up to scratch but it does work so you can now use the card. That makes it at least useful, especially as the other cardbus cards are usually INIC162x which aren't yet supported well. Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/Kconfig | 9 ++ drivers/ata/Makefile | 1 + drivers/ata/pata_ninja32.c | 212 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 222 insertions(+) create mode 100644 drivers/ata/pata_ninja32.c (limited to 'drivers') diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index ba63619ae5df..2478cca653de 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -459,6 +459,15 @@ config PATA_NETCELL If unsure, say N. +config PATA_NINJA32 + tristate "Ninja32/Delkin Cardbus ATA support (Experimental)" + depends on PCI && EXPERIMENTAL + help + This option enables support for the Ninja32, Delkin and + possibly other brands of Cardbus ATA adapter + + If unsure, say N. + config PATA_NS87410 tristate "Nat Semi NS87410 PATA support (Experimental)" depends on PCI && EXPERIMENTAL diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile index b13feb2c5dae..82550c16818c 100644 --- a/drivers/ata/Makefile +++ b/drivers/ata/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_PATA_IT821X) += pata_it821x.o obj-$(CONFIG_PATA_IT8213) += pata_it8213.o obj-$(CONFIG_PATA_JMICRON) += pata_jmicron.o obj-$(CONFIG_PATA_NETCELL) += pata_netcell.o +obj-$(CONFIG_PATA_NINJA32) += pata_ninja32.o obj-$(CONFIG_PATA_NS87410) += pata_ns87410.o obj-$(CONFIG_PATA_NS87415) += pata_ns87415.o obj-$(CONFIG_PATA_OPTI) += pata_opti.o diff --git a/drivers/ata/pata_ninja32.c b/drivers/ata/pata_ninja32.c new file mode 100644 index 000000000000..04acd3f86120 --- /dev/null +++ b/drivers/ata/pata_ninja32.c @@ -0,0 +1,212 @@ +/* + * pata_ninja32.c - Ninja32 PATA for new ATA layer + * (C) 2007 Red Hat Inc + * Alan Cox + * + * Note: The controller like many controllers has shared timings for + * PIO and DMA. We thus flip to the DMA timings in dma_start and flip back + * in the dma_stop function. Thus we actually don't need a set_dmamode + * method as the PIO method is always called and will set the right PIO + * timing parameters. + * + * The Ninja32 Cardbus is not a generic SFF controller. Instead it is + * laid out as follows off BAR 0. This is based upon Mark Lord's delkin + * driver and the extensive analysis done by the BSD developers, notably + * ITOH Yasufumi. + * + * Base + 0x00 IRQ Status + * Base + 0x01 IRQ control + * Base + 0x02 Chipset control + * Base + 0x04 VDMA and reset control + wait bits + * Base + 0x08 BMIMBA + * Base + 0x0C DMA Length + * Base + 0x10 Taskfile + * Base + 0x18 BMDMA Status ? + * Base + 0x1C + * Base + 0x1D Bus master control + * bit 0 = enable + * bit 1 = 0 write/1 read + * bit 2 = 1 sgtable + * bit 3 = go + * bit 4-6 wait bits + * bit 7 = done + * Base + 0x1E AltStatus + * Base + 0x1F timing register + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define DRV_NAME "pata_ninja32" +#define DRV_VERSION "0.0.1" + + +/** + * ninja32_set_piomode - set initial PIO mode data + * @ap: ATA interface + * @adev: ATA device + * + * Called to do the PIO mode setup. Our timing registers are shared + * but we want to set the PIO timing by default. + */ + +static void ninja32_set_piomode(struct ata_port *ap, struct ata_device *adev) +{ + static u16 pio_timing[5] = { + 0xd6, 0x85, 0x44, 0x33, 0x13 + }; + iowrite8(pio_timing[adev->pio_mode - XFER_PIO_0], ap->ioaddr.bmdma_addr + 0x1f); + ap->private_data = adev; +} + + +static void ninja32_dev_select(struct ata_port *ap, unsigned int device) +{ + struct ata_device *adev = &ap->link.device[device]; + if (ap->private_data != adev) { + iowrite8(0xd6, ap->ioaddr.bmdma_addr + 0x1f); + ata_std_dev_select(ap, device); + ninja32_set_piomode(ap, adev); + } +} + +static struct scsi_host_template ninja32_sht = { + .module = THIS_MODULE, + .name = DRV_NAME, + .ioctl = ata_scsi_ioctl, + .queuecommand = ata_scsi_queuecmd, + .can_queue = ATA_DEF_QUEUE, + .this_id = ATA_SHT_THIS_ID, + .sg_tablesize = LIBATA_MAX_PRD, + .cmd_per_lun = ATA_SHT_CMD_PER_LUN, + .emulated = ATA_SHT_EMULATED, + .use_clustering = ATA_SHT_USE_CLUSTERING, + .proc_name = DRV_NAME, + .dma_boundary = ATA_DMA_BOUNDARY, + .slave_configure = ata_scsi_slave_config, + .slave_destroy = ata_scsi_slave_destroy, + .bios_param = ata_std_bios_param, +}; + +static struct ata_port_operations ninja32_port_ops = { + .set_piomode = ninja32_set_piomode, + .mode_filter = ata_pci_default_filter, + + .tf_load = ata_tf_load, + .tf_read = ata_tf_read, + .check_status = ata_check_status, + .exec_command = ata_exec_command, + .dev_select = ninja32_dev_select, + + .freeze = ata_bmdma_freeze, + .thaw = ata_bmdma_thaw, + .error_handler = ata_bmdma_error_handler, + .post_internal_cmd = ata_bmdma_post_internal_cmd, + .cable_detect = ata_cable_40wire, + + .bmdma_setup = ata_bmdma_setup, + .bmdma_start = ata_bmdma_start, + .bmdma_stop = ata_bmdma_stop, + .bmdma_status = ata_bmdma_status, + + .qc_prep = ata_qc_prep, + .qc_issue = ata_qc_issue_prot, + + .data_xfer = ata_data_xfer, + + .irq_handler = ata_interrupt, + .irq_clear = ata_bmdma_irq_clear, + .irq_on = ata_irq_on, + + .port_start = ata_sff_port_start, +}; + +static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id) +{ + struct ata_host *host; + struct ata_port *ap; + void __iomem *base; + int rc; + + host = ata_host_alloc(&dev->dev, 1); + if (!host) + return -ENOMEM; + ap = host->ports[0]; + + /* Set up the PCI device */ + rc = pcim_enable_device(dev); + if (rc) + return rc; + rc = pcim_iomap_regions(dev, 1 << 0, DRV_NAME); + if (rc == -EBUSY) + pcim_pin_device(dev); + if (rc) + return rc; + + host->iomap = pcim_iomap_table(dev); + rc = pci_set_dma_mask(dev, ATA_DMA_MASK); + if (rc) + return rc; + rc = pci_set_consistent_dma_mask(dev, ATA_DMA_MASK); + if (rc) + return rc; + pci_set_master(dev); + + /* Set up the register mappings */ + base = host->iomap[0]; + if (!base) + return -ENOMEM; + ap->ops = &ninja32_port_ops; + ap->pio_mask = 0x1F; + ap->flags |= ATA_FLAG_SLAVE_POSS; + + ap->ioaddr.cmd_addr = base + 0x10; + ap->ioaddr.ctl_addr = base + 0x1E; + ap->ioaddr.altstatus_addr = base + 0x1E; + ap->ioaddr.bmdma_addr = base; + ata_std_ports(&ap->ioaddr); + + iowrite8(0x05, base + 0x01); /* Enable interrupt lines */ + iowrite8(0xB3, base + 0x02); /* Burst, ?? setup */ + iowrite8(0x00, base + 0x04); /* WAIT0 ? */ + /* FIXME: Should we disable them at remove ? */ + return ata_host_activate(host, dev->irq, ata_interrupt, IRQF_SHARED, &ninja32_sht); +} + +static const struct pci_device_id ninja32[] = { + { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + { }, +}; + +static struct pci_driver ninja32_pci_driver = { + .name = DRV_NAME, + .id_table = ninja32, + .probe = ninja32_init_one, + .remove = ata_pci_remove_one +}; + +static int __init ninja32_init(void) +{ + return pci_register_driver(&ninja32_pci_driver); +} + +static void __exit ninja32_exit(void) +{ + pci_unregister_driver(&ninja32_pci_driver); +} + +MODULE_AUTHOR("Alan Cox"); +MODULE_DESCRIPTION("low-level driver for Ninja32 ATA"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(pci, ninja32); +MODULE_VERSION(DRV_VERSION); + +module_init(ninja32_init); +module_exit(ninja32_exit); -- cgit v1.2.3-59-g8ed1b From 49f290903935612aadab3899a4aca884c1140348 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 19 Nov 2007 16:03:44 +0900 Subject: ahci: update PCS programming For intel ones, ahci unconditionally OR'd 0xf to PCS. This isn't correct for the following cases. * ich6/7m's which only implement P0 and P2 (0xf works fine tho) * ich8/9's which have six ports and needs 0x3f to enable all ports This patch updates PCS programming such that... * port_map determined by ahci_save_initial_config() is OR'd instead of 0xf * PCS is updated only if necessary (there are turned off enable bits) port_map is determined from PORTS_IMPL PCI register which is implemented as write or write-once register. If the register isn't programmed, ahci automatically generates it from number of ports, which is good enough for PCS programming. ICH6/7M are probably the only ones where non-contiguous enable bits are necessary && PORTS_IMPL isn't programmed properly but they're proven to work reliably with 0xf anyway. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/ahci.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 54f38c21dd95..ef5e6b6e6e69 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1036,6 +1036,7 @@ static int ahci_deinit_port(struct ata_port *ap, const char **emsg) static int ahci_reset_controller(struct ata_host *host) { struct pci_dev *pdev = to_pci_dev(host->dev); + struct ahci_host_priv *hpriv = host->private_data; void __iomem *mmio = host->iomap[AHCI_PCI_BAR]; u32 tmp; @@ -1078,8 +1079,10 @@ static int ahci_reset_controller(struct ata_host *host) /* configure PCS */ pci_read_config_word(pdev, 0x92, &tmp16); - tmp16 |= 0xf; - pci_write_config_word(pdev, 0x92, tmp16); + if ((tmp16 & hpriv->port_map) != hpriv->port_map) { + tmp16 |= hpriv->port_map; + pci_write_config_word(pdev, 0x92, tmp16); + } } return 0; -- cgit v1.2.3-59-g8ed1b From 11b7becca9425aab50807503c8102b2db9e5ecf0 Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Fri, 23 Nov 2007 21:12:14 -0500 Subject: libata: checkpatch fixes Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 6 +++--- drivers/ata/pata_ali.c | 2 +- drivers/ata/pata_ninja32.c | 10 ++++++---- 3 files changed, 10 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 3dd0e942df36..bb9e025522ba 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4374,11 +4374,11 @@ static unsigned int ata_dev_set_xfermode(struct ata_device *dev) tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_POLLING; tf.protocol = ATA_PROT_NODATA; /* If we are using IORDY we must send the mode setting command */ - if (ata_pio_need_iordy(dev)) - tf.nsect = dev->xfer_mode; + if (ata_pio_need_iordy(dev)) + tf.nsect = dev->xfer_mode; /* If the device has IORDY and the controller does not - turn it off */ else if (ata_id_has_iordy(dev->id)) - tf.nsect = 0x01; + tf.nsect = 0x01; else /* In the ancient relic department - skip all of this */ return 0; diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c index 8caf9afc8b90..7e68edf3c0f3 100644 --- a/drivers/ata/pata_ali.c +++ b/drivers/ata/pata_ali.c @@ -64,7 +64,7 @@ static int ali_cable_override(struct pci_dev *pdev) if (pdev->subsystem_vendor == 0x10CF && pdev->subsystem_device == 0x10AF) return 1; /* Mitac 8317 (Winbook-A) and relatives */ - if (pdev->subsystem_vendor == 0x1071 && pdev->subsystem_device == 0x8317) + if (pdev->subsystem_vendor == 0x1071 && pdev->subsystem_device == 0x8317) return 1; /* Systems by DMI */ if (dmi_check_system(cable_dmi_table)) diff --git a/drivers/ata/pata_ninja32.c b/drivers/ata/pata_ninja32.c index 04acd3f86120..1c1b83541d13 100644 --- a/drivers/ata/pata_ninja32.c +++ b/drivers/ata/pata_ninja32.c @@ -61,7 +61,8 @@ static void ninja32_set_piomode(struct ata_port *ap, struct ata_device *adev) static u16 pio_timing[5] = { 0xd6, 0x85, 0x44, 0x33, 0x13 }; - iowrite8(pio_timing[adev->pio_mode - XFER_PIO_0], ap->ioaddr.bmdma_addr + 0x1f); + iowrite8(pio_timing[adev->pio_mode - XFER_PIO_0], + ap->ioaddr.bmdma_addr + 0x1f); ap->private_data = adev; } @@ -176,12 +177,13 @@ static int ninja32_init_one(struct pci_dev *dev, const struct pci_device_id *id) iowrite8(0xB3, base + 0x02); /* Burst, ?? setup */ iowrite8(0x00, base + 0x04); /* WAIT0 ? */ /* FIXME: Should we disable them at remove ? */ - return ata_host_activate(host, dev->irq, ata_interrupt, IRQF_SHARED, &ninja32_sht); + return ata_host_activate(host, dev->irq, ata_interrupt, + IRQF_SHARED, &ninja32_sht); } static const struct pci_device_id ninja32[] = { - { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, - { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, + { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, { }, }; -- cgit v1.2.3-59-g8ed1b From 405e66b38797875e80669eaf72d313dbb76533c3 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:28:53 +0900 Subject: libata: implement protocol tests Implement protocol tests - ata_is_atapi(), ata_is_nodata(), ata_is_pio(), ata_is_dma(), ata_is_ncq() and ata_is_data() and use them to replace is_atapi_taskfile() and hard coded protocol tests. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/ahci.c | 2 +- drivers/ata/libata-core.c | 36 +++++----------------- drivers/ata/sata_fsl.c | 2 +- drivers/ata/sata_sil.c | 10 +++--- drivers/ata/sata_sil24.c | 24 +++------------ drivers/scsi/libsas/sas_ata.c | 2 +- include/linux/ata.h | 71 ++++++++++++++++++++++++++++++++++++++----- 7 files changed, 82 insertions(+), 65 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index ef5e6b6e6e69..5eee91c73c90 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1511,7 +1511,7 @@ static void ahci_qc_prep(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct ahci_port_priv *pp = ap->private_data; - int is_atapi = is_atapi_taskfile(&qc->tf); + int is_atapi = ata_is_atapi(qc->tf.protocol); void *cmd_tbl; u32 opts; const u32 cmd_fis_len = 5; /* five dwords */ diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index bb9e025522ba..8c7af2c8e8d4 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5358,7 +5358,7 @@ static inline int ata_hsm_ok_in_wq(struct ata_port *ap, struct ata_queued_cmd *q (qc->tf.flags & ATA_TFLAG_WRITE)) return 1; - if (is_atapi_taskfile(&qc->tf) && + if (ata_is_atapi(qc->tf.protocol) && !(qc->dev->flags & ATA_DFLAG_CDB_INTR)) return 1; } @@ -5955,30 +5955,6 @@ int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active, return nr_done; } -static inline int ata_should_dma_map(struct ata_queued_cmd *qc) -{ - struct ata_port *ap = qc->ap; - - switch (qc->tf.protocol) { - case ATA_PROT_NCQ: - case ATA_PROT_DMA: - case ATA_PROT_ATAPI_DMA: - return 1; - - case ATA_PROT_ATAPI: - case ATA_PROT_PIO: - if (ap->flags & ATA_FLAG_PIO_DMA) - return 1; - - /* fall through */ - - default: - return 0; - } - - /* never reached */ -} - /** * ata_qc_issue - issue taskfile to device * @qc: command to issue to device @@ -5995,6 +5971,7 @@ void ata_qc_issue(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct ata_link *link = qc->dev->link; + u8 prot = qc->tf.protocol; /* Make sure only one non-NCQ command is outstanding. The * check is skipped for old EH because it reuses active qc to @@ -6002,7 +5979,7 @@ void ata_qc_issue(struct ata_queued_cmd *qc) */ WARN_ON(ap->ops->error_handler && ata_tag_valid(link->active_tag)); - if (qc->tf.protocol == ATA_PROT_NCQ) { + if (prot == ATA_PROT_NCQ) { WARN_ON(link->sactive & (1 << qc->tag)); if (!link->sactive) @@ -6018,7 +5995,8 @@ void ata_qc_issue(struct ata_queued_cmd *qc) qc->flags |= ATA_QCFLAG_ACTIVE; ap->qc_active |= 1 << qc->tag; - if (ata_should_dma_map(qc)) { + if (ata_is_dma(prot) || (ata_is_pio(prot) && + (ap->flags & ATA_FLAG_PIO_DMA))) { if (qc->flags & ATA_QCFLAG_SG) { if (ata_sg_setup(qc)) goto sg_err; @@ -6217,8 +6195,8 @@ inline unsigned int ata_host_intr(struct ata_port *ap, */ /* Check the ATA_DFLAG_CDB_INTR flag is enough here. - * The flag was turned on only for atapi devices. - * No need to check is_atapi_taskfile(&qc->tf) again. + * The flag was turned on only for atapi devices. No + * need to check ata_is_atapi(qc->tf.protocol) again. */ if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) goto idle_irq; diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c index d015b4adcfe0..a3c33f165427 100644 --- a/drivers/ata/sata_fsl.c +++ b/drivers/ata/sata_fsl.c @@ -417,7 +417,7 @@ static void sata_fsl_qc_prep(struct ata_queued_cmd *qc) } /* setup "ACMD - atapi command" in cmd. desc. if this is ATAPI cmd */ - if (is_atapi_taskfile(&qc->tf)) { + if (ata_is_atapi(qc->tf.protocol)) { desc_info |= ATAPI_CMD; memset((void *)&cd->acmd, 0, 32); memcpy((void *)&cd->acmd, qc->cdb, qc->dev->cdb_len); diff --git a/drivers/ata/sata_sil.c b/drivers/ata/sata_sil.c index f5119bf40c24..0b8191b52f97 100644 --- a/drivers/ata/sata_sil.c +++ b/drivers/ata/sata_sil.c @@ -416,15 +416,14 @@ static void sil_host_intr(struct ata_port *ap, u32 bmdma2) */ /* Check the ATA_DFLAG_CDB_INTR flag is enough here. - * The flag was turned on only for atapi devices. - * No need to check is_atapi_taskfile(&qc->tf) again. + * The flag was turned on only for atapi devices. No + * need to check ata_is_atapi(qc->tf.protocol) again. */ if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) goto err_hsm; break; case HSM_ST_LAST: - if (qc->tf.protocol == ATA_PROT_DMA || - qc->tf.protocol == ATA_PROT_ATAPI_DMA) { + if (ata_is_dma(qc->tf.protocol)) { /* clear DMA-Start bit */ ap->ops->bmdma_stop(qc); @@ -451,8 +450,7 @@ static void sil_host_intr(struct ata_port *ap, u32 bmdma2) /* kick HSM in the ass */ ata_hsm_move(ap, qc, status, 0); - if (unlikely(qc->err_mask) && (qc->tf.protocol == ATA_PROT_DMA || - qc->tf.protocol == ATA_PROT_ATAPI_DMA)) + if (unlikely(qc->err_mask) && ata_is_dma(qc->tf.protocol)) ata_ehi_push_desc(ehi, "BMDMA2 stat 0x%x", bmdma2); return; diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c index 864c1c1b8511..fdd3ceac329b 100644 --- a/drivers/ata/sata_sil24.c +++ b/drivers/ata/sata_sil24.c @@ -852,9 +852,7 @@ static int sil24_qc_defer(struct ata_queued_cmd *qc) * set. * */ - int is_excl = (prot == ATA_PROT_ATAPI || - prot == ATA_PROT_ATAPI_NODATA || - prot == ATA_PROT_ATAPI_DMA || + int is_excl = (ata_is_atapi(prot) || (qc->flags & ATA_QCFLAG_RESULT_TF)); if (unlikely(ap->excl_link)) { @@ -885,35 +883,21 @@ static void sil24_qc_prep(struct ata_queued_cmd *qc) cb = &pp->cmd_block[sil24_tag(qc->tag)]; - switch (qc->tf.protocol) { - case ATA_PROT_PIO: - case ATA_PROT_DMA: - case ATA_PROT_NCQ: - case ATA_PROT_NODATA: + if (!ata_is_atapi(qc->tf.protocol)) { prb = &cb->ata.prb; sge = cb->ata.sge; - break; - - case ATA_PROT_ATAPI: - case ATA_PROT_ATAPI_DMA: - case ATA_PROT_ATAPI_NODATA: + } else { prb = &cb->atapi.prb; sge = cb->atapi.sge; memset(cb->atapi.cdb, 0, 32); memcpy(cb->atapi.cdb, qc->cdb, qc->dev->cdb_len); - if (qc->tf.protocol != ATA_PROT_ATAPI_NODATA) { + if (ata_is_data(qc->tf.protocol)) { if (qc->tf.flags & ATA_TFLAG_WRITE) ctrl = PRB_CTRL_PACKET_WRITE; else ctrl = PRB_CTRL_PACKET_READ; } - break; - - default: - prb = NULL; /* shut up, gcc */ - sge = NULL; - BUG(); } prb->ctrl = cpu_to_le16(ctrl); diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index 0829b55c64d2..831294de1d8d 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -176,7 +176,7 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc) ata_tf_to_fis(&qc->tf, 1, 0, (u8*)&task->ata_task.fis); task->uldd_task = qc; - if (is_atapi_taskfile(&qc->tf)) { + if (ata_is_atapi(qc->tf.protocol)) { memcpy(task->ata_task.atapi_packet, qc->cdb, qc->dev->cdb_len); task->total_xfer_len = qc->nbytes + qc->pad_len; task->num_scatter = qc->pad_len ? qc->n_elem + 1 : qc->n_elem; diff --git a/include/linux/ata.h b/include/linux/ata.h index 3fbe6d7784ab..43fecf62773a 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -324,6 +324,13 @@ enum { ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ + + /* protocol flags */ + ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */ + ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */ + ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA, + ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */ + ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */ }; enum ata_tf_protocols { @@ -373,6 +380,63 @@ struct ata_taskfile { u8 command; /* IO operation */ }; +/* + * protocol tests + */ +static inline unsigned int ata_prot_flags(u8 prot) +{ + switch (prot) { + case ATA_PROT_NODATA: + return 0; + case ATA_PROT_PIO: + return ATA_PROT_FLAG_PIO; + case ATA_PROT_DMA: + return ATA_PROT_FLAG_DMA; + case ATA_PROT_NCQ: + return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ; + case ATA_PROT_ATAPI_NODATA: + return ATA_PROT_FLAG_ATAPI; + case ATA_PROT_ATAPI: + return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; + case ATA_PROT_ATAPI_DMA: + return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA; + } + return 0; +} + +static inline int ata_is_atapi(u8 prot) +{ + return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI; +} + +static inline int ata_is_nodata(u8 prot) +{ + return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA); +} + +static inline int ata_is_pio(u8 prot) +{ + return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO; +} + +static inline int ata_is_dma(u8 prot) +{ + return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA; +} + +static inline int ata_is_ncq(u8 prot) +{ + return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ; +} + +static inline int ata_is_data(u8 prot) +{ + return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA; +} + +/* + * id tests + */ #define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0) #define ata_id_has_lba(id) ((id)[49] & (1 << 9)) #define ata_id_has_dma(id) ((id)[49] & (1 << 8)) @@ -594,13 +658,6 @@ static inline int atapi_command_packet_set(const u16 *dev_id) return (dev_id[0] >> 8) & 0x1f; } -static inline int is_atapi_taskfile(const struct ata_taskfile *tf) -{ - return (tf->protocol == ATA_PROT_ATAPI) || - (tf->protocol == ATA_PROT_ATAPI_NODATA) || - (tf->protocol == ATA_PROT_ATAPI_DMA); -} - static inline int is_multi_taskfile(struct ata_taskfile *tf) { return (tf->command == ATA_CMD_READ_MULTI) || -- cgit v1.2.3-59-g8ed1b From 02c05a27e884c9655dae5b1c8bc0cd89c060c43d Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:28:54 +0900 Subject: libata: factor out ata_eh_schedule_probe() Factor out ata_eh_schedule_probe() from ata_eh_handle_dev_fail() and ata_eh_recover(). This is to improve maintainability and make future changes easier. In the previous revision, ata_dev_enabled() test was accidentally dropped while factoring out. This problem was spotted by Bartlomiej. Signed-off-by: Tejun Heo Cc: Bartlomiej Zolnierkiewicz Signed-off-by: Jeff Garzik --- drivers/ata/libata-eh.c | 38 +++++++++++++++++++++----------------- 1 file changed, 21 insertions(+), 17 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 1d7faab64810..b16c81a24ba3 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2375,6 +2375,22 @@ static int ata_eh_skip_recovery(struct ata_link *link) return 1; } +static int ata_eh_schedule_probe(struct ata_device *dev) +{ + struct ata_eh_context *ehc = &dev->link->eh_context; + + if (!(ehc->i.probe_mask & (1 << dev->devno)) || + (ehc->did_probe_mask & (1 << dev->devno))) + return 0; + + ata_eh_detach_dev(dev); + ata_dev_init(dev); + ehc->did_probe_mask |= (1 << dev->devno); + ehc->i.action |= ATA_EH_SOFTRESET; + + return 1; +} + static int ata_eh_handle_dev_fail(struct ata_device *dev, int err) { struct ata_eh_context *ehc = &dev->link->eh_context; @@ -2406,16 +2422,9 @@ static int ata_eh_handle_dev_fail(struct ata_device *dev, int err) if (ata_link_offline(dev->link)) ata_eh_detach_dev(dev); - /* probe if requested */ - if ((ehc->i.probe_mask & (1 << dev->devno)) && - !(ehc->did_probe_mask & (1 << dev->devno))) { - ata_eh_detach_dev(dev); - ata_dev_init(dev); - + /* schedule probe if necessary */ + if (ata_eh_schedule_probe(dev)) ehc->tries[dev->devno] = ATA_EH_DEV_TRIES; - ehc->did_probe_mask |= (1 << dev->devno); - ehc->i.action |= ATA_EH_SOFTRESET; - } return 1; } else { @@ -2492,14 +2501,9 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset, if (dev->flags & ATA_DFLAG_DETACH) ata_eh_detach_dev(dev); - if (!ata_dev_enabled(dev) && - ((ehc->i.probe_mask & (1 << dev->devno)) && - !(ehc->did_probe_mask & (1 << dev->devno)))) { - ata_eh_detach_dev(dev); - ata_dev_init(dev); - ehc->did_probe_mask |= (1 << dev->devno); - ehc->i.action |= ATA_EH_SOFTRESET; - } + /* schedule probe if necessary */ + if (!ata_dev_enabled(dev)) + ata_eh_schedule_probe(dev); } } -- cgit v1.2.3-59-g8ed1b From 6f1d1e3a03fd04a9d9c82fd3cf414020097bb142 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:28:55 +0900 Subject: libata: move ata_set_mode() to libata-eh.c Move ata_set_mode() to libata-eh.c. ata_set_mode() is surely an EH action and will be more tightly coupled with the rest of error handling. Move it to libata-eh.c. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 25 ------------------------- drivers/ata/libata-eh.c | 25 +++++++++++++++++++++++++ drivers/ata/libata.h | 2 +- 3 files changed, 26 insertions(+), 26 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 8c7af2c8e8d4..86c10cc751e9 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -3182,31 +3182,6 @@ int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) return rc; } -/** - * ata_set_mode - Program timings and issue SET FEATURES - XFER - * @link: link on which timings will be programmed - * @r_failed_dev: out paramter for failed device - * - * Set ATA device disk transfer mode (PIO3, UDMA6, etc.). If - * ata_set_mode() fails, pointer to the failing device is - * returned in @r_failed_dev. - * - * LOCKING: - * PCI/etc. bus probe sem. - * - * RETURNS: - * 0 on success, negative errno otherwise - */ -int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) -{ - struct ata_port *ap = link->ap; - - /* has private set_mode? */ - if (ap->ops->set_mode) - return ap->ops->set_mode(link, r_failed_dev); - return ata_do_set_mode(link, r_failed_dev); -} - /** * ata_tf_to_host - issue ATA taskfile to host controller * @ap: port to which command is being issued diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index b16c81a24ba3..ebab75958900 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2329,6 +2329,31 @@ static int ata_eh_revalidate_and_attach(struct ata_link *link, return rc; } +/** + * ata_set_mode - Program timings and issue SET FEATURES - XFER + * @link: link on which timings will be programmed + * @r_failed_dev: out paramter for failed device + * + * Set ATA device disk transfer mode (PIO3, UDMA6, etc.). If + * ata_set_mode() fails, pointer to the failing device is + * returned in @r_failed_dev. + * + * LOCKING: + * PCI/etc. bus probe sem. + * + * RETURNS: + * 0 on success, negative errno otherwise + */ +int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) +{ + struct ata_port *ap = link->ap; + + /* has private set_mode? */ + if (ap->ops->set_mode) + return ap->ops->set_mode(link, r_failed_dev); + return ata_do_set_mode(link, r_failed_dev); +} + static int ata_link_nr_enabled(struct ata_link *link) { struct ata_device *dev; diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index 8cf0874f248b..409ffb9af163 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -86,7 +86,6 @@ extern int ata_dev_configure(struct ata_device *dev); extern int sata_down_spd_limit(struct ata_link *link); extern int sata_set_spd_needed(struct ata_link *link); extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel); -extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); extern void ata_sg_clean(struct ata_queued_cmd *qc); extern void ata_qc_free(struct ata_queued_cmd *qc); extern void ata_qc_issue(struct ata_queued_cmd *qc); @@ -187,6 +186,7 @@ extern void ata_eh_report(struct ata_port *ap); extern int ata_eh_reset(struct ata_link *link, int classify, ata_prereset_fn_t prereset, ata_reset_fn_t softreset, ata_reset_fn_t hardreset, ata_postreset_fn_t postreset); +extern int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset, ata_reset_fn_t softreset, ata_reset_fn_t hardreset, ata_postreset_fn_t postreset, -- cgit v1.2.3-59-g8ed1b From 3884f7b0a8382b89d8ca5da23bd98e3e15fc805b Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:28:56 +0900 Subject: libata: clean up EH speed down implementation Clean up EH speed down implementation. * is_io boolean variable is replaced eflags. is_io is ATA_EFLAG_IS_IO. * Error categories now have names. * Better comments. * Reorder 5min and 10min rules in ata_eh_speed_down_verdict() * Use local variable @link to cache @dev->link in ata_eh_speed_down() These changes are to improve readability and ease further changes. This patch doesn't introduce any behavior change. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-eh.c | 117 ++++++++++++++++++++++++++++++------------------ include/linux/libata.h | 2 +- 2 files changed, 74 insertions(+), 45 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index ebab75958900..b01ade102727 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -46,9 +46,20 @@ #include "libata.h" enum { + /* speed down verdicts */ ATA_EH_SPDN_NCQ_OFF = (1 << 0), ATA_EH_SPDN_SPEED_DOWN = (1 << 1), ATA_EH_SPDN_FALLBACK_TO_PIO = (1 << 2), + + /* error flags */ + ATA_EFLAG_IS_IO = (1 << 0), + + /* error categories */ + ATA_ECAT_NONE = 0, + ATA_ECAT_ATA_BUS = 1, + ATA_ECAT_TOUT_HSM = 2, + ATA_ECAT_UNK_DEV = 3, + ATA_ECAT_NR = 4, }; /* Waiting in ->prereset can never be reliable. It's sometimes nice @@ -218,7 +229,7 @@ void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, #endif /* CONFIG_PCI */ -static void ata_ering_record(struct ata_ering *ering, int is_io, +static void ata_ering_record(struct ata_ering *ering, unsigned int eflags, unsigned int err_mask) { struct ata_ering_entry *ent; @@ -229,7 +240,7 @@ static void ata_ering_record(struct ata_ering *ering, int is_io, ering->cursor %= ATA_ERING_SIZE; ent = &ering->ring[ering->cursor]; - ent->is_io = is_io; + ent->eflags = eflags; ent->err_mask = err_mask; ent->timestamp = get_jiffies_64(); } @@ -1451,20 +1462,20 @@ static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc, return action; } -static int ata_eh_categorize_error(int is_io, unsigned int err_mask) +static int ata_eh_categorize_error(unsigned int eflags, unsigned int err_mask) { if (err_mask & AC_ERR_ATA_BUS) - return 1; + return ATA_ECAT_ATA_BUS; if (err_mask & AC_ERR_TIMEOUT) - return 2; + return ATA_ECAT_TOUT_HSM; - if (is_io) { + if (eflags & ATA_EFLAG_IS_IO) { if (err_mask & AC_ERR_HSM) - return 2; + return ATA_ECAT_TOUT_HSM; if ((err_mask & (AC_ERR_DEV|AC_ERR_MEDIA|AC_ERR_INVALID)) == AC_ERR_DEV) - return 3; + return ATA_ECAT_UNK_DEV; } return 0; @@ -1472,13 +1483,13 @@ static int ata_eh_categorize_error(int is_io, unsigned int err_mask) struct speed_down_verdict_arg { u64 since; - int nr_errors[4]; + int nr_errors[ATA_ECAT_NR]; }; static int speed_down_verdict_cb(struct ata_ering_entry *ent, void *void_arg) { struct speed_down_verdict_arg *arg = void_arg; - int cat = ata_eh_categorize_error(ent->is_io, ent->err_mask); + int cat = ata_eh_categorize_error(ent->eflags, ent->err_mask); if (ent->timestamp < arg->since) return -1; @@ -1495,22 +1506,33 @@ static int speed_down_verdict_cb(struct ata_ering_entry *ent, void *void_arg) * whether NCQ needs to be turned off, transfer speed should be * stepped down, or falling back to PIO is necessary. * - * Cat-1 is ATA_BUS error for any command. + * ECAT_ATA_BUS : ATA_BUS error for any command + * + * ECAT_TOUT_HSM : TIMEOUT for any command or HSM violation for + * IO commands + * + * ECAT_UNK_DEV : Unknown DEV error for IO commands + * + * Verdicts are * - * Cat-2 is TIMEOUT for any command or HSM violation for known - * supported commands. + * NCQ_OFF : Turn off NCQ. * - * Cat-3 is is unclassified DEV error for known supported - * command. + * SPEED_DOWN : Speed down transfer speed but don't fall back + * to PIO. * - * NCQ needs to be turned off if there have been more than 3 - * Cat-2 + Cat-3 errors during last 10 minutes. + * FALLBACK_TO_PIO : Fall back to PIO. * - * Speed down is necessary if there have been more than 3 Cat-1 + - * Cat-2 errors or 10 Cat-3 errors during last 10 minutes. + * Even if multiple verdicts are returned, only one action is + * taken per error. ering is cleared after an action is taken. * - * Falling back to PIO mode is necessary if there have been more - * than 10 Cat-1 + Cat-2 + Cat-3 errors during last 5 minutes. + * 1. If more than 10 ATA_BUS, TOUT_HSM or UNK_DEV errors + * ocurred during last 5 mins, FALLBACK_TO_PIO + * + * 2. If more than 3 TOUT_HSM or UNK_DEV errors occurred + * during last 10 mins, NCQ_OFF. + * + * 3. If more than 3 ATA_BUS or TOUT_HSM errors, or more than 10 + * UNK_DEV errors occurred during last 10 mins, SPEED_DOWN. * * LOCKING: * Inherited from caller. @@ -1525,23 +1547,29 @@ static unsigned int ata_eh_speed_down_verdict(struct ata_device *dev) struct speed_down_verdict_arg arg; unsigned int verdict = 0; - /* scan past 10 mins of error history */ + /* scan past 5 mins of error history */ memset(&arg, 0, sizeof(arg)); - arg.since = j64 - min(j64, j10mins); + arg.since = j64 - min(j64, j5mins); ata_ering_map(&dev->ering, speed_down_verdict_cb, &arg); - if (arg.nr_errors[2] + arg.nr_errors[3] > 3) - verdict |= ATA_EH_SPDN_NCQ_OFF; - if (arg.nr_errors[1] + arg.nr_errors[2] > 3 || arg.nr_errors[3] > 10) - verdict |= ATA_EH_SPDN_SPEED_DOWN; + if (arg.nr_errors[ATA_ECAT_ATA_BUS] + + arg.nr_errors[ATA_ECAT_TOUT_HSM] + + arg.nr_errors[ATA_ECAT_UNK_DEV] > 10) + verdict |= ATA_EH_SPDN_FALLBACK_TO_PIO; - /* scan past 3 mins of error history */ + /* scan past 10 mins of error history */ memset(&arg, 0, sizeof(arg)); - arg.since = j64 - min(j64, j5mins); + arg.since = j64 - min(j64, j10mins); ata_ering_map(&dev->ering, speed_down_verdict_cb, &arg); - if (arg.nr_errors[1] + arg.nr_errors[2] + arg.nr_errors[3] > 10) - verdict |= ATA_EH_SPDN_FALLBACK_TO_PIO; + if (arg.nr_errors[ATA_ECAT_TOUT_HSM] + + arg.nr_errors[ATA_ECAT_UNK_DEV] > 3) + verdict |= ATA_EH_SPDN_NCQ_OFF; + + if (arg.nr_errors[ATA_ECAT_ATA_BUS] + + arg.nr_errors[ATA_ECAT_TOUT_HSM] > 3 || + arg.nr_errors[ATA_ECAT_UNK_DEV] > 10) + verdict |= ATA_EH_SPDN_SPEED_DOWN; return verdict; } @@ -1549,7 +1577,7 @@ static unsigned int ata_eh_speed_down_verdict(struct ata_device *dev) /** * ata_eh_speed_down - record error and speed down if necessary * @dev: Failed device - * @is_io: Did the device fail during normal IO? + * @eflags: mask of ATA_EFLAG_* flags * @err_mask: err_mask of the error * * Record error and examine error history to determine whether @@ -1563,18 +1591,19 @@ static unsigned int ata_eh_speed_down_verdict(struct ata_device *dev) * RETURNS: * Determined recovery action. */ -static unsigned int ata_eh_speed_down(struct ata_device *dev, int is_io, - unsigned int err_mask) +static unsigned int ata_eh_speed_down(struct ata_device *dev, + unsigned int eflags, unsigned int err_mask) { + struct ata_link *link = dev->link; unsigned int verdict; unsigned int action = 0; /* don't bother if Cat-0 error */ - if (ata_eh_categorize_error(is_io, err_mask) == 0) + if (ata_eh_categorize_error(eflags, err_mask) == 0) return 0; /* record error and determine whether speed down is necessary */ - ata_ering_record(&dev->ering, is_io, err_mask); + ata_ering_record(&dev->ering, eflags, err_mask); verdict = ata_eh_speed_down_verdict(dev); /* turn off NCQ? */ @@ -1590,7 +1619,7 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev, int is_io, /* speed down? */ if (verdict & ATA_EH_SPDN_SPEED_DOWN) { /* speed down SATA link speed if possible */ - if (sata_down_spd_limit(dev->link) == 0) { + if (sata_down_spd_limit(link) == 0) { action |= ATA_EH_HARDRESET; goto done; } @@ -1621,7 +1650,7 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev, int is_io, * SATA. Consider it only for PATA. */ if ((verdict & ATA_EH_SPDN_FALLBACK_TO_PIO) && (dev->spdn_cnt >= 2) && - (dev->link->ap->cbl != ATA_CBL_SATA) && + (link->ap->cbl != ATA_CBL_SATA) && (dev->xfer_shift != ATA_SHIFT_PIO)) { if (ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO) == 0) { dev->spdn_cnt = 0; @@ -1653,8 +1682,8 @@ static void ata_eh_link_autopsy(struct ata_link *link) struct ata_port *ap = link->ap; struct ata_eh_context *ehc = &link->eh_context; struct ata_device *dev; - unsigned int all_err_mask = 0; - int tag, is_io = 0; + unsigned int all_err_mask = 0, eflags = 0; + int tag; u32 serror; int rc; @@ -1713,15 +1742,15 @@ static void ata_eh_link_autopsy(struct ata_link *link) ehc->i.dev = qc->dev; all_err_mask |= qc->err_mask; if (qc->flags & ATA_QCFLAG_IO) - is_io = 1; + eflags |= ATA_EFLAG_IS_IO; } /* enforce default EH actions */ if (ap->pflags & ATA_PFLAG_FROZEN || all_err_mask & (AC_ERR_HSM | AC_ERR_TIMEOUT)) ehc->i.action |= ATA_EH_SOFTRESET; - else if ((is_io && all_err_mask) || - (!is_io && (all_err_mask & ~AC_ERR_DEV))) + else if (((eflags & ATA_EFLAG_IS_IO) && all_err_mask) || + (!(eflags & ATA_EFLAG_IS_IO) && (all_err_mask & ~AC_ERR_DEV))) ehc->i.action |= ATA_EH_REVALIDATE; /* If we have offending qcs and the associated failed device, @@ -1744,7 +1773,7 @@ static void ata_eh_link_autopsy(struct ata_link *link) dev = link->device; if (dev) - ehc->i.action |= ata_eh_speed_down(dev, is_io, all_err_mask); + ehc->i.action |= ata_eh_speed_down(dev, eflags, all_err_mask); DPRINTK("EXIT\n"); } diff --git a/include/linux/libata.h b/include/linux/libata.h index ca347b018649..74f1255e2524 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -482,7 +482,7 @@ struct ata_port_stats { }; struct ata_ering_entry { - int is_io; + unsigned int eflags; unsigned int err_mask; u64 timestamp; }; -- cgit v1.2.3-59-g8ed1b From 663f99b86ac7d4c0eed8c239638da0ea8849288b Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:28:57 +0900 Subject: libata: adjust speed down rules Speed down rules were too conservative. Adjust them a bit. * More than 10 timeouts can't happen in 5 minutes as command timeout is 30secs. Lower the limit for rule #1 to 6. * 10 timeouts is too high for rule #3 too. Lower it to 6. * SATAPI can benefit from falling back to PIO too. Allow SATAPI devices to fall back to PIO. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-eh.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index b01ade102727..7d766ada7a5d 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -1525,13 +1525,13 @@ static int speed_down_verdict_cb(struct ata_ering_entry *ent, void *void_arg) * Even if multiple verdicts are returned, only one action is * taken per error. ering is cleared after an action is taken. * - * 1. If more than 10 ATA_BUS, TOUT_HSM or UNK_DEV errors + * 1. If more than 6 ATA_BUS, TOUT_HSM or UNK_DEV errors * ocurred during last 5 mins, FALLBACK_TO_PIO * * 2. If more than 3 TOUT_HSM or UNK_DEV errors occurred * during last 10 mins, NCQ_OFF. * - * 3. If more than 3 ATA_BUS or TOUT_HSM errors, or more than 10 + * 3. If more than 3 ATA_BUS or TOUT_HSM errors, or more than 6 * UNK_DEV errors occurred during last 10 mins, SPEED_DOWN. * * LOCKING: @@ -1554,7 +1554,7 @@ static unsigned int ata_eh_speed_down_verdict(struct ata_device *dev) if (arg.nr_errors[ATA_ECAT_ATA_BUS] + arg.nr_errors[ATA_ECAT_TOUT_HSM] + - arg.nr_errors[ATA_ECAT_UNK_DEV] > 10) + arg.nr_errors[ATA_ECAT_UNK_DEV] > 6) verdict |= ATA_EH_SPDN_FALLBACK_TO_PIO; /* scan past 10 mins of error history */ @@ -1568,7 +1568,7 @@ static unsigned int ata_eh_speed_down_verdict(struct ata_device *dev) if (arg.nr_errors[ATA_ECAT_ATA_BUS] + arg.nr_errors[ATA_ECAT_TOUT_HSM] > 3 || - arg.nr_errors[ATA_ECAT_UNK_DEV] > 10) + arg.nr_errors[ATA_ECAT_UNK_DEV] > 6) verdict |= ATA_EH_SPDN_SPEED_DOWN; return verdict; @@ -1647,10 +1647,10 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev, } /* Fall back to PIO? Slowing down to PIO is meaningless for - * SATA. Consider it only for PATA. + * SATA ATA devices. Consider it only for PATA and SATAPI. */ if ((verdict & ATA_EH_SPDN_FALLBACK_TO_PIO) && (dev->spdn_cnt >= 2) && - (link->ap->cbl != ATA_CBL_SATA) && + (link->ap->cbl != ATA_CBL_SATA || dev->class == ATA_DEV_ATAPI) && (dev->xfer_shift != ATA_SHIFT_PIO)) { if (ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO) == 0) { dev->spdn_cnt = 0; -- cgit v1.2.3-59-g8ed1b From 00115e0f5bc3bfdf3f3855ad89c8895f10458f92 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:28:58 +0900 Subject: libata: implement ATA_DFLAG_DUBIOUS_XFER ATA_DFLAG_DUBIOUS_XFER is set whenever data transfer speed or method changes and gets cleared when data transfer command succeeds in the newly configured transfer mode. This will be used to improve speed down logic. Signed-off-by: Tejun Heo --- drivers/ata/libata-core.c | 19 +++++++++++++++++++ drivers/ata/libata-eh.c | 33 +++++++++++++++++++++++++++++++-- include/linux/libata.h | 3 +++ 3 files changed, 53 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 86c10cc751e9..124b6f111cc3 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5797,6 +5797,22 @@ static void fill_result_tf(struct ata_queued_cmd *qc) ap->ops->tf_read(ap, &qc->result_tf); } +static void ata_verify_xfer(struct ata_queued_cmd *qc) +{ + struct ata_device *dev = qc->dev; + + if (ata_tag_internal(qc->tag)) + return; + + if (ata_is_nodata(qc->tf.protocol)) + return; + + if ((dev->mwdma_mask || dev->udma_mask) && ata_is_pio(qc->tf.protocol)) + return; + + dev->flags &= ~ATA_DFLAG_DUBIOUS_XFER; +} + /** * ata_qc_complete - Complete an active ATA command * @qc: Command to complete @@ -5868,6 +5884,9 @@ void ata_qc_complete(struct ata_queued_cmd *qc) break; } + if (unlikely(dev->flags & ATA_DFLAG_DUBIOUS_XFER)) + ata_verify_xfer(qc); + __ata_qc_complete(qc); } else { if (qc->flags & ATA_QCFLAG_EH_SCHEDULED) diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 7d766ada7a5d..359a5ace8473 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -456,9 +456,20 @@ void ata_scsi_error(struct Scsi_Host *host) spin_lock_irqsave(ap->lock, flags); __ata_port_for_each_link(link, ap) { + struct ata_eh_context *ehc = &link->eh_context; + struct ata_device *dev; + memset(&link->eh_context, 0, sizeof(link->eh_context)); link->eh_context.i = link->eh_info; memset(&link->eh_info, 0, sizeof(link->eh_info)); + + ata_link_for_each_dev(dev, link) { + int devno = dev->devno; + + ehc->saved_xfer_mode[devno] = dev->xfer_mode; + if (ata_ncq_enabled(dev)) + ehc->saved_ncq_enabled |= 1 << devno; + } } ap->pflags |= ATA_PFLAG_EH_IN_PROGRESS; @@ -2376,11 +2387,27 @@ static int ata_eh_revalidate_and_attach(struct ata_link *link, int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) { struct ata_port *ap = link->ap; + struct ata_device *dev; + int rc; /* has private set_mode? */ if (ap->ops->set_mode) - return ap->ops->set_mode(link, r_failed_dev); - return ata_do_set_mode(link, r_failed_dev); + rc = ap->ops->set_mode(link, r_failed_dev); + else + rc = ata_do_set_mode(link, r_failed_dev); + + /* if transfer mode has changed, set DUBIOUS_XFER on device */ + ata_link_for_each_dev(dev, link) { + struct ata_eh_context *ehc = &link->eh_context; + u8 saved_xfer_mode = ehc->saved_xfer_mode[dev->devno]; + u8 saved_ncq = !!(ehc->saved_ncq_enabled & (1 << dev->devno)); + + if (dev->xfer_mode != saved_xfer_mode || + ata_ncq_enabled(dev) != saved_ncq) + dev->flags |= ATA_DFLAG_DUBIOUS_XFER; + } + + return rc; } static int ata_link_nr_enabled(struct ata_link *link) @@ -2441,6 +2468,8 @@ static int ata_eh_schedule_probe(struct ata_device *dev) ata_dev_init(dev); ehc->did_probe_mask |= (1 << dev->devno); ehc->i.action |= ATA_EH_SOFTRESET; + ehc->saved_xfer_mode[dev->devno] = 0; + ehc->saved_ncq_enabled &= ~(1 << dev->devno); return 1; } diff --git a/include/linux/libata.h b/include/linux/libata.h index 74f1255e2524..131fb6625e14 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -143,6 +143,7 @@ enum { ATA_DFLAG_NCQ_OFF = (1 << 13), /* device limited to non-NCQ mode */ ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */ ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */ + ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */ ATA_DFLAG_INIT_MASK = (1 << 24) - 1, ATA_DFLAG_DETACH = (1 << 24), @@ -560,6 +561,8 @@ struct ata_eh_context { int tries[ATA_MAX_DEVICES]; unsigned int classes[ATA_MAX_DEVICES]; unsigned int did_probe_mask; + unsigned int saved_ncq_enabled; + u8 saved_xfer_mode[ATA_MAX_DEVICES]; }; struct ata_acpi_drive -- cgit v1.2.3-59-g8ed1b From 76326ac1ac1f524014ef36986fed97796b28ec6b Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:28:59 +0900 Subject: libata: implement fast speed down for unverified data transfer mode It's very likely that the configured data transfer mode is the wrong one if device fails data transfers right after initial data transfer mode configuration (including NCQ on/off and xfermode). libata EH needs to speed down fast before upper layers give up on probing. This patch implement fast speed down rules to handle such cases better. Error occured while data transfer hasn't been verified trigger fast back-to-back speed down actions until data transfer works. This change will make cable mis-detection and other initial configuration problems corrected before partition scanning code gives up. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-eh.c | 97 ++++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 83 insertions(+), 14 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 359a5ace8473..3a2f7ef3e600 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -50,16 +50,23 @@ enum { ATA_EH_SPDN_NCQ_OFF = (1 << 0), ATA_EH_SPDN_SPEED_DOWN = (1 << 1), ATA_EH_SPDN_FALLBACK_TO_PIO = (1 << 2), + ATA_EH_SPDN_KEEP_ERRORS = (1 << 3), /* error flags */ ATA_EFLAG_IS_IO = (1 << 0), + ATA_EFLAG_DUBIOUS_XFER = (1 << 1), /* error categories */ ATA_ECAT_NONE = 0, ATA_ECAT_ATA_BUS = 1, ATA_ECAT_TOUT_HSM = 2, ATA_ECAT_UNK_DEV = 3, - ATA_ECAT_NR = 4, + ATA_ECAT_DUBIOUS_ATA_BUS = 4, + ATA_ECAT_DUBIOUS_TOUT_HSM = 5, + ATA_ECAT_DUBIOUS_UNK_DEV = 6, + ATA_ECAT_NR = 7, + + ATA_ECAT_DUBIOUS_BASE = ATA_ECAT_DUBIOUS_ATA_BUS, }; /* Waiting in ->prereset can never be reliable. It's sometimes nice @@ -245,6 +252,15 @@ static void ata_ering_record(struct ata_ering *ering, unsigned int eflags, ent->timestamp = get_jiffies_64(); } +static struct ata_ering_entry *ata_ering_top(struct ata_ering *ering) +{ + struct ata_ering_entry *ent = &ering->ring[ering->cursor]; + + if (ent->err_mask) + return ent; + return NULL; +} + static void ata_ering_clear(struct ata_ering *ering) { memset(ering, 0, sizeof(*ering)); @@ -1473,20 +1489,29 @@ static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc, return action; } -static int ata_eh_categorize_error(unsigned int eflags, unsigned int err_mask) +static int ata_eh_categorize_error(unsigned int eflags, unsigned int err_mask, + int *xfer_ok) { + int base = 0; + + if (!(eflags & ATA_EFLAG_DUBIOUS_XFER)) + *xfer_ok = 1; + + if (!*xfer_ok) + base = ATA_ECAT_DUBIOUS_BASE; + if (err_mask & AC_ERR_ATA_BUS) - return ATA_ECAT_ATA_BUS; + return base + ATA_ECAT_ATA_BUS; if (err_mask & AC_ERR_TIMEOUT) - return ATA_ECAT_TOUT_HSM; + return base + ATA_ECAT_TOUT_HSM; if (eflags & ATA_EFLAG_IS_IO) { if (err_mask & AC_ERR_HSM) - return ATA_ECAT_TOUT_HSM; + return base + ATA_ECAT_TOUT_HSM; if ((err_mask & (AC_ERR_DEV|AC_ERR_MEDIA|AC_ERR_INVALID)) == AC_ERR_DEV) - return ATA_ECAT_UNK_DEV; + return base + ATA_ECAT_UNK_DEV; } return 0; @@ -1494,18 +1519,22 @@ static int ata_eh_categorize_error(unsigned int eflags, unsigned int err_mask) struct speed_down_verdict_arg { u64 since; + int xfer_ok; int nr_errors[ATA_ECAT_NR]; }; static int speed_down_verdict_cb(struct ata_ering_entry *ent, void *void_arg) { struct speed_down_verdict_arg *arg = void_arg; - int cat = ata_eh_categorize_error(ent->eflags, ent->err_mask); + int cat; if (ent->timestamp < arg->since) return -1; + cat = ata_eh_categorize_error(ent->eflags, ent->err_mask, + &arg->xfer_ok); arg->nr_errors[cat]++; + return 0; } @@ -1524,6 +1553,9 @@ static int speed_down_verdict_cb(struct ata_ering_entry *ent, void *void_arg) * * ECAT_UNK_DEV : Unknown DEV error for IO commands * + * ECAT_DUBIOUS_* : Identical to above three but occurred while + * data transfer hasn't been verified. + * * Verdicts are * * NCQ_OFF : Turn off NCQ. @@ -1534,15 +1566,27 @@ static int speed_down_verdict_cb(struct ata_ering_entry *ent, void *void_arg) * FALLBACK_TO_PIO : Fall back to PIO. * * Even if multiple verdicts are returned, only one action is - * taken per error. ering is cleared after an action is taken. + * taken per error. An action triggered by non-DUBIOUS errors + * clears ering, while one triggered by DUBIOUS_* errors doesn't. + * This is to expedite speed down decisions right after device is + * initially configured. + * + * The followings are speed down rules. #1 and #2 deal with + * DUBIOUS errors. * - * 1. If more than 6 ATA_BUS, TOUT_HSM or UNK_DEV errors + * 1. If more than one DUBIOUS_ATA_BUS or DUBIOUS_TOUT_HSM errors + * occurred during last 5 mins, SPEED_DOWN and FALLBACK_TO_PIO. + * + * 2. If more than one DUBIOUS_TOUT_HSM or DUBIOUS_UNK_DEV errors + * occurred during last 5 mins, NCQ_OFF. + * + * 3. If more than 8 ATA_BUS, TOUT_HSM or UNK_DEV errors * ocurred during last 5 mins, FALLBACK_TO_PIO * - * 2. If more than 3 TOUT_HSM or UNK_DEV errors occurred + * 4. If more than 3 TOUT_HSM or UNK_DEV errors occurred * during last 10 mins, NCQ_OFF. * - * 3. If more than 3 ATA_BUS or TOUT_HSM errors, or more than 6 + * 5. If more than 3 ATA_BUS or TOUT_HSM errors, or more than 6 * UNK_DEV errors occurred during last 10 mins, SPEED_DOWN. * * LOCKING: @@ -1563,6 +1607,15 @@ static unsigned int ata_eh_speed_down_verdict(struct ata_device *dev) arg.since = j64 - min(j64, j5mins); ata_ering_map(&dev->ering, speed_down_verdict_cb, &arg); + if (arg.nr_errors[ATA_ECAT_DUBIOUS_ATA_BUS] + + arg.nr_errors[ATA_ECAT_DUBIOUS_TOUT_HSM] > 1) + verdict |= ATA_EH_SPDN_SPEED_DOWN | + ATA_EH_SPDN_FALLBACK_TO_PIO | ATA_EH_SPDN_KEEP_ERRORS; + + if (arg.nr_errors[ATA_ECAT_DUBIOUS_TOUT_HSM] + + arg.nr_errors[ATA_ECAT_DUBIOUS_UNK_DEV] > 1) + verdict |= ATA_EH_SPDN_NCQ_OFF | ATA_EH_SPDN_KEEP_ERRORS; + if (arg.nr_errors[ATA_ECAT_ATA_BUS] + arg.nr_errors[ATA_ECAT_TOUT_HSM] + arg.nr_errors[ATA_ECAT_UNK_DEV] > 6) @@ -1606,11 +1659,12 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev, unsigned int eflags, unsigned int err_mask) { struct ata_link *link = dev->link; + int xfer_ok = 0; unsigned int verdict; unsigned int action = 0; /* don't bother if Cat-0 error */ - if (ata_eh_categorize_error(eflags, err_mask) == 0) + if (ata_eh_categorize_error(eflags, err_mask, &xfer_ok) == 0) return 0; /* record error and determine whether speed down is necessary */ @@ -1673,7 +1727,8 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev, return 0; done: /* device has been slowed down, blow error history */ - ata_ering_clear(&dev->ering); + if (!(verdict & ATA_EH_SPDN_KEEP_ERRORS)) + ata_ering_clear(&dev->ering); return action; } @@ -1783,8 +1838,11 @@ static void ata_eh_link_autopsy(struct ata_link *link) ata_dev_enabled(link->device)))) dev = link->device; - if (dev) + if (dev) { + if (dev->flags & ATA_DFLAG_DUBIOUS_XFER) + eflags |= ATA_EFLAG_DUBIOUS_XFER; ehc->i.action |= ata_eh_speed_down(dev, eflags, all_err_mask); + } DPRINTK("EXIT\n"); } @@ -2390,6 +2448,17 @@ int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) struct ata_device *dev; int rc; + /* if data transfer is verified, clear DUBIOUS_XFER on ering top */ + ata_link_for_each_dev(dev, link) { + if (!(dev->flags & ATA_DFLAG_DUBIOUS_XFER)) { + struct ata_ering_entry *ent; + + ent = ata_ering_top(&dev->ering); + if (ent) + ent->eflags &= ~ATA_EFLAG_DUBIOUS_XFER; + } + } + /* has private set_mode? */ if (ap->ops->set_mode) rc = ap->ops->set_mode(link, r_failed_dev); -- cgit v1.2.3-59-g8ed1b From e39eec13ff8c58520d77b5f977b1e0fa067fbd2c Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Sat, 1 Dec 2007 18:05:39 -0500 Subject: [libata] Build fix WRT ata_is_xxx() new API introduction Signed-off-by: Jeff Garzik --- drivers/ata/libata-eh.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 3a2f7ef3e600..d7d5a5ae04ef 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -1987,7 +1987,7 @@ static void ata_eh_link_report(struct ata_link *link) dma_str[qc->dma_dir]); } - if (is_atapi_taskfile(&qc->tf)) + if (ata_is_atapi(qc->tf.protocol)) snprintf(cdb_buf, sizeof(cdb_buf), "cdb %02x %02x %02x %02x %02x %02x %02x %02x " "%02x %02x %02x %02x %02x %02x %02x %02x\n ", -- cgit v1.2.3-59-g8ed1b From f8ab6d8e15a9b978f79aee794c263014c2959dfc Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:43:38 +0900 Subject: ata_generic: unindent loop in generic_set_mode() Unindent loop body in generic_set_mode(). This is to ease future change. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/ata_generic.c | 31 ++++++++++++++++--------------- 1 file changed, 16 insertions(+), 15 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/ata_generic.c b/drivers/ata/ata_generic.c index 90329982bef7..fb5434c8ae6e 100644 --- a/drivers/ata/ata_generic.c +++ b/drivers/ata/ata_generic.c @@ -54,21 +54,22 @@ static int generic_set_mode(struct ata_link *link, struct ata_device **unused) dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); ata_link_for_each_dev(dev, link) { - if (ata_dev_enabled(dev)) { - /* We don't really care */ - dev->pio_mode = XFER_PIO_0; - dev->dma_mode = XFER_MW_DMA_0; - /* We do need the right mode information for DMA or PIO - and this comes from the current configuration flags */ - if (dma_enabled & (1 << (5 + dev->devno))) { - ata_id_to_dma_mode(dev, XFER_MW_DMA_0); - dev->flags &= ~ATA_DFLAG_PIO; - } else { - ata_dev_printk(dev, KERN_INFO, "configured for PIO\n"); - dev->xfer_mode = XFER_PIO_0; - dev->xfer_shift = ATA_SHIFT_PIO; - dev->flags |= ATA_DFLAG_PIO; - } + if (!ata_dev_enabled(dev)) + continue; + + /* We don't really care */ + dev->pio_mode = XFER_PIO_0; + dev->dma_mode = XFER_MW_DMA_0; + /* We do need the right mode information for DMA or PIO + and this comes from the current configuration flags */ + if (dma_enabled & (1 << (5 + dev->devno))) { + ata_id_to_dma_mode(dev, XFER_MW_DMA_0); + dev->flags &= ~ATA_DFLAG_PIO; + } else { + ata_dev_printk(dev, KERN_INFO, "configured for PIO\n"); + dev->xfer_mode = XFER_PIO_0; + dev->xfer_shift = ATA_SHIFT_PIO; + dev->flags |= ATA_DFLAG_PIO; } } return 0; -- cgit v1.2.3-59-g8ed1b From 6357357cae7794dcb89cace758108dec612e7ed5 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:43:39 +0900 Subject: libata: export xfermode / PATA timing related functions Export the following xfermode related functions. * ata_pack_xfermask() * ata_unpack_xfermask() * ata_xfer_mask2mode() * ata_xfer_mode2mask() * ata_xfer_mode2shift() * ata_mode_string() * ata_id_xfermask() * ata_timing_find_mode() These functions will be used later by LLD updates. While at it, change unsigned short @speed to u8 @xfer_mode in ata_timing_find_mode() for consistency. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 33 +++++++++++++++++++-------------- include/linux/libata.h | 10 ++++++++++ 2 files changed, 29 insertions(+), 14 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 124b6f111cc3..a2f2ff864b37 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -454,9 +454,8 @@ int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, * RETURNS: * Packed xfer_mask. */ -static unsigned int ata_pack_xfermask(unsigned int pio_mask, - unsigned int mwdma_mask, - unsigned int udma_mask) +unsigned int ata_pack_xfermask(unsigned int pio_mask, + unsigned int mwdma_mask, unsigned int udma_mask) { return ((pio_mask << ATA_SHIFT_PIO) & ATA_MASK_PIO) | ((mwdma_mask << ATA_SHIFT_MWDMA) & ATA_MASK_MWDMA) | @@ -473,10 +472,8 @@ static unsigned int ata_pack_xfermask(unsigned int pio_mask, * Unpack @xfer_mask into @pio_mask, @mwdma_mask and @udma_mask. * Any NULL distination masks will be ignored. */ -static void ata_unpack_xfermask(unsigned int xfer_mask, - unsigned int *pio_mask, - unsigned int *mwdma_mask, - unsigned int *udma_mask) +void ata_unpack_xfermask(unsigned int xfer_mask, unsigned int *pio_mask, + unsigned int *mwdma_mask, unsigned int *udma_mask) { if (pio_mask) *pio_mask = (xfer_mask & ATA_MASK_PIO) >> ATA_SHIFT_PIO; @@ -509,7 +506,7 @@ static const struct ata_xfer_ent { * RETURNS: * Matching XFER_* value, 0 if no match found. */ -static u8 ata_xfer_mask2mode(unsigned int xfer_mask) +u8 ata_xfer_mask2mode(unsigned int xfer_mask) { int highbit = fls(xfer_mask) - 1; const struct ata_xfer_ent *ent; @@ -532,7 +529,7 @@ static u8 ata_xfer_mask2mode(unsigned int xfer_mask) * RETURNS: * Matching xfer_mask, 0 if no match found. */ -static unsigned int ata_xfer_mode2mask(u8 xfer_mode) +unsigned int ata_xfer_mode2mask(u8 xfer_mode) { const struct ata_xfer_ent *ent; @@ -554,7 +551,7 @@ static unsigned int ata_xfer_mode2mask(u8 xfer_mode) * RETURNS: * Matching xfer_shift, -1 if no match found. */ -static int ata_xfer_mode2shift(unsigned int xfer_mode) +int ata_xfer_mode2shift(unsigned int xfer_mode) { const struct ata_xfer_ent *ent; @@ -578,7 +575,7 @@ static int ata_xfer_mode2shift(unsigned int xfer_mode) * Constant C string representing highest speed listed in * @mode_mask, or the constant C string "". */ -static const char *ata_mode_string(unsigned int xfer_mask) +const char *ata_mode_string(unsigned int xfer_mask) { static const char * const xfer_mode_str[] = { "PIO0", @@ -1468,7 +1465,7 @@ static inline void ata_dump_id(const u16 *id) * RETURNS: * Computed xfermask */ -static unsigned int ata_id_xfermask(const u16 *id) +unsigned int ata_id_xfermask(const u16 *id) { unsigned int pio_mask, mwdma_mask, udma_mask; @@ -2855,11 +2852,11 @@ void ata_timing_merge(const struct ata_timing *a, const struct ata_timing *b, if (what & ATA_TIMING_UDMA ) m->udma = max(a->udma, b->udma); } -static const struct ata_timing *ata_timing_find_mode(unsigned short speed) +const struct ata_timing *ata_timing_find_mode(u8 xfer_mode) { const struct ata_timing *t; - for (t = ata_timing; t->mode != speed; t++) + for (t = ata_timing; t->mode != xfer_mode; t++) if (t->mode == 0xFF) return NULL; return t; @@ -7590,6 +7587,13 @@ EXPORT_SYMBOL_GPL(ata_std_dev_select); EXPORT_SYMBOL_GPL(sata_print_link_status); EXPORT_SYMBOL_GPL(ata_tf_to_fis); EXPORT_SYMBOL_GPL(ata_tf_from_fis); +EXPORT_SYMBOL_GPL(ata_pack_xfermask); +EXPORT_SYMBOL_GPL(ata_unpack_xfermask); +EXPORT_SYMBOL_GPL(ata_xfer_mask2mode); +EXPORT_SYMBOL_GPL(ata_xfer_mode2mask); +EXPORT_SYMBOL_GPL(ata_xfer_mode2shift); +EXPORT_SYMBOL_GPL(ata_mode_string); +EXPORT_SYMBOL_GPL(ata_id_xfermask); EXPORT_SYMBOL_GPL(ata_check_status); EXPORT_SYMBOL_GPL(ata_altstatus); EXPORT_SYMBOL_GPL(ata_exec_command); @@ -7655,6 +7659,7 @@ EXPORT_SYMBOL_GPL(ata_id_to_dma_mode); EXPORT_SYMBOL_GPL(ata_scsi_simulate); EXPORT_SYMBOL_GPL(ata_pio_need_iordy); +EXPORT_SYMBOL_GPL(ata_timing_find_mode); EXPORT_SYMBOL_GPL(ata_timing_compute); EXPORT_SYMBOL_GPL(ata_timing_merge); diff --git a/include/linux/libata.h b/include/linux/libata.h index 131fb6625e14..083dd77b120d 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -851,6 +851,15 @@ extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf); extern void ata_tf_to_fis(const struct ata_taskfile *tf, u8 pmp, int is_cmd, u8 *fis); extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); +extern unsigned int ata_pack_xfermask(unsigned int pio_mask, + unsigned int mwdma_mask, unsigned int udma_mask); +extern void ata_unpack_xfermask(unsigned int xfer_mask, unsigned int *pio_mask, + unsigned int *mwdma_mask, unsigned int *udma_mask); +extern u8 ata_xfer_mask2mode(unsigned int xfer_mask); +extern unsigned int ata_xfer_mode2mask(u8 xfer_mode); +extern int ata_xfer_mode2shift(unsigned int xfer_mode); +extern const char *ata_mode_string(unsigned int xfer_mask); +extern unsigned int ata_id_xfermask(const u16 *id); extern void ata_noop_dev_select(struct ata_port *ap, unsigned int device); extern void ata_std_dev_select(struct ata_port *ap, unsigned int device); extern u8 ata_check_status(struct ata_port *ap); @@ -920,6 +929,7 @@ extern int ata_cable_unknown(struct ata_port *ap); */ extern unsigned int ata_pio_need_iordy(const struct ata_device *); +extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode); extern int ata_timing_compute(struct ata_device *, unsigned short, struct ata_timing *, int, int); extern void ata_timing_merge(const struct ata_timing *, -- cgit v1.2.3-59-g8ed1b From 70cd071e4ecc06c985189665af75c108601fd5a3 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:43:40 +0900 Subject: libata: clean up xfermode / PATA timing related stuff * s/ATA_BITS_(PIO|MWDMA|UDMA)/ATA_NR_\1_MODES/g * Consistently use 0xff to indicate invalid transfer mode (0x00 is valid for PIO_SLOW). * Make ata_xfer_mode2mask() return proper mode mask instead of just the highest bit. * Sort ata_timing table in increasing xfermode order and update ata_timing_find_mode() accordingly. This patch doesn't introduce any behavior change. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 82 +++++++++++++++++++++++------------------------ include/linux/libata.h | 21 ++++++------ 2 files changed, 52 insertions(+), 51 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index a2f2ff864b37..a70ed7b3bc55 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -487,9 +487,9 @@ static const struct ata_xfer_ent { int shift, bits; u8 base; } ata_xfer_tbl[] = { - { ATA_SHIFT_PIO, ATA_BITS_PIO, XFER_PIO_0 }, - { ATA_SHIFT_MWDMA, ATA_BITS_MWDMA, XFER_MW_DMA_0 }, - { ATA_SHIFT_UDMA, ATA_BITS_UDMA, XFER_UDMA_0 }, + { ATA_SHIFT_PIO, ATA_NR_PIO_MODES, XFER_PIO_0 }, + { ATA_SHIFT_MWDMA, ATA_NR_MWDMA_MODES, XFER_MW_DMA_0 }, + { ATA_SHIFT_UDMA, ATA_NR_UDMA_MODES, XFER_UDMA_0 }, { -1, }, }; @@ -504,7 +504,7 @@ static const struct ata_xfer_ent { * None. * * RETURNS: - * Matching XFER_* value, 0 if no match found. + * Matching XFER_* value, 0xff if no match found. */ u8 ata_xfer_mask2mode(unsigned int xfer_mask) { @@ -514,7 +514,7 @@ u8 ata_xfer_mask2mode(unsigned int xfer_mask) for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) if (highbit >= ent->shift && highbit < ent->shift + ent->bits) return ent->base + highbit - ent->shift; - return 0; + return 0xff; } /** @@ -535,7 +535,8 @@ unsigned int ata_xfer_mode2mask(u8 xfer_mode) for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) if (xfer_mode >= ent->base && xfer_mode < ent->base + ent->bits) - return 1 << (ent->shift + xfer_mode - ent->base); + return ((2 << (ent->shift + xfer_mode - ent->base)) - 1) + & ~((1 << ent->shift) - 1); return 0; } @@ -1314,7 +1315,7 @@ void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown) /* Select the mode in use */ mode = ata_xfer_mask2mode(mask); - if (mode != 0) { + if (mode != 0xff) { ata_dev_printk(dev, KERN_INFO, "configured for %s\n", ata_mode_string(mask)); } else { @@ -2788,38 +2789,33 @@ int sata_set_spd(struct ata_link *link) */ static const struct ata_timing ata_timing[] = { +/* { XFER_PIO_SLOW, 120, 290, 240, 960, 290, 240, 960, 0 }, */ + { XFER_PIO_0, 70, 290, 240, 600, 165, 150, 600, 0 }, + { XFER_PIO_1, 50, 290, 93, 383, 125, 100, 383, 0 }, + { XFER_PIO_2, 30, 290, 40, 330, 100, 90, 240, 0 }, + { XFER_PIO_3, 30, 80, 70, 180, 80, 70, 180, 0 }, + { XFER_PIO_4, 25, 70, 25, 120, 70, 25, 120, 0 }, + { XFER_PIO_5, 15, 65, 25, 100, 65, 25, 100, 0 }, + { XFER_PIO_6, 10, 55, 20, 80, 55, 20, 80, 0 }, - { XFER_UDMA_6, 0, 0, 0, 0, 0, 0, 0, 15 }, - { XFER_UDMA_5, 0, 0, 0, 0, 0, 0, 0, 20 }, - { XFER_UDMA_4, 0, 0, 0, 0, 0, 0, 0, 30 }, - { XFER_UDMA_3, 0, 0, 0, 0, 0, 0, 0, 45 }, + { XFER_SW_DMA_0, 120, 0, 0, 0, 480, 480, 960, 0 }, + { XFER_SW_DMA_1, 90, 0, 0, 0, 240, 240, 480, 0 }, + { XFER_SW_DMA_2, 60, 0, 0, 0, 120, 120, 240, 0 }, - { XFER_MW_DMA_4, 25, 0, 0, 0, 55, 20, 80, 0 }, + { XFER_MW_DMA_0, 60, 0, 0, 0, 215, 215, 480, 0 }, + { XFER_MW_DMA_1, 45, 0, 0, 0, 80, 50, 150, 0 }, + { XFER_MW_DMA_2, 25, 0, 0, 0, 70, 25, 120, 0 }, { XFER_MW_DMA_3, 25, 0, 0, 0, 65, 25, 100, 0 }, - { XFER_UDMA_2, 0, 0, 0, 0, 0, 0, 0, 60 }, - { XFER_UDMA_1, 0, 0, 0, 0, 0, 0, 0, 80 }, - { XFER_UDMA_0, 0, 0, 0, 0, 0, 0, 0, 120 }, + { XFER_MW_DMA_4, 25, 0, 0, 0, 55, 20, 80, 0 }, /* { XFER_UDMA_SLOW, 0, 0, 0, 0, 0, 0, 0, 150 }, */ - - { XFER_MW_DMA_2, 25, 0, 0, 0, 70, 25, 120, 0 }, - { XFER_MW_DMA_1, 45, 0, 0, 0, 80, 50, 150, 0 }, - { XFER_MW_DMA_0, 60, 0, 0, 0, 215, 215, 480, 0 }, - - { XFER_SW_DMA_2, 60, 0, 0, 0, 120, 120, 240, 0 }, - { XFER_SW_DMA_1, 90, 0, 0, 0, 240, 240, 480, 0 }, - { XFER_SW_DMA_0, 120, 0, 0, 0, 480, 480, 960, 0 }, - - { XFER_PIO_6, 10, 55, 20, 80, 55, 20, 80, 0 }, - { XFER_PIO_5, 15, 65, 25, 100, 65, 25, 100, 0 }, - { XFER_PIO_4, 25, 70, 25, 120, 70, 25, 120, 0 }, - { XFER_PIO_3, 30, 80, 70, 180, 80, 70, 180, 0 }, - - { XFER_PIO_2, 30, 290, 40, 330, 100, 90, 240, 0 }, - { XFER_PIO_1, 50, 290, 93, 383, 125, 100, 383, 0 }, - { XFER_PIO_0, 70, 290, 240, 600, 165, 150, 600, 0 }, - -/* { XFER_PIO_SLOW, 120, 290, 240, 960, 290, 240, 960, 0 }, */ + { XFER_UDMA_0, 0, 0, 0, 0, 0, 0, 0, 120 }, + { XFER_UDMA_1, 0, 0, 0, 0, 0, 0, 0, 80 }, + { XFER_UDMA_2, 0, 0, 0, 0, 0, 0, 0, 60 }, + { XFER_UDMA_3, 0, 0, 0, 0, 0, 0, 0, 45 }, + { XFER_UDMA_4, 0, 0, 0, 0, 0, 0, 0, 30 }, + { XFER_UDMA_5, 0, 0, 0, 0, 0, 0, 0, 20 }, + { XFER_UDMA_6, 0, 0, 0, 0, 0, 0, 0, 15 }, { 0xFF } }; @@ -2854,12 +2850,14 @@ void ata_timing_merge(const struct ata_timing *a, const struct ata_timing *b, const struct ata_timing *ata_timing_find_mode(u8 xfer_mode) { - const struct ata_timing *t; + const struct ata_timing *t = ata_timing; + + while (xfer_mode > t->mode) + t++; - for (t = ata_timing; t->mode != xfer_mode; t++) - if (t->mode == 0xFF) - return NULL; - return t; + if (xfer_mode == t->mode) + return t; + return NULL; } int ata_timing_compute(struct ata_device *adev, unsigned short speed, @@ -3122,7 +3120,7 @@ int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) dev->dma_mode = ata_xfer_mask2mode(dma_mask); found = 1; - if (dev->dma_mode) + if (dev->dma_mode != 0xff) used_dma = 1; } if (!found) @@ -3133,7 +3131,7 @@ int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) if (!ata_dev_enabled(dev)) continue; - if (!dev->pio_mode) { + if (dev->pio_mode == 0xff) { ata_dev_printk(dev, KERN_WARNING, "no PIO support\n"); rc = -EINVAL; goto out; @@ -3147,7 +3145,7 @@ int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) /* step 3: set host DMA timings */ ata_link_for_each_dev(dev, link) { - if (!ata_dev_enabled(dev) || !dev->dma_mode) + if (!ata_dev_enabled(dev) || dev->dma_mode == 0xff) continue; dev->xfer_mode = dev->dma_mode; diff --git a/include/linux/libata.h b/include/linux/libata.h index 083dd77b120d..e2ed3bac8c5b 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -269,17 +269,20 @@ enum { /* encoding various smaller bitmaps into a single * unsigned int bitmap */ - ATA_BITS_PIO = 7, - ATA_BITS_MWDMA = 5, - ATA_BITS_UDMA = 8, + ATA_NR_PIO_MODES = 7, + ATA_NR_MWDMA_MODES = 5, + ATA_NR_UDMA_MODES = 8, ATA_SHIFT_PIO = 0, - ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_BITS_PIO, - ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_BITS_MWDMA, - - ATA_MASK_PIO = ((1 << ATA_BITS_PIO) - 1) << ATA_SHIFT_PIO, - ATA_MASK_MWDMA = ((1 << ATA_BITS_MWDMA) - 1) << ATA_SHIFT_MWDMA, - ATA_MASK_UDMA = ((1 << ATA_BITS_UDMA) - 1) << ATA_SHIFT_UDMA, + ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, + ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, + + ATA_MASK_PIO = ((1 << ATA_NR_PIO_MODES) - 1) + << ATA_SHIFT_PIO, + ATA_MASK_MWDMA = ((1 << ATA_NR_MWDMA_MODES) - 1) + << ATA_SHIFT_MWDMA, + ATA_MASK_UDMA = ((1 << ATA_NR_UDMA_MODES) - 1) + << ATA_SHIFT_UDMA, /* size of buffer to pad xfers ending on unaligned boundaries */ ATA_DMA_PAD_SZ = 4, -- cgit v1.2.3-59-g8ed1b From 9d3501ab962b1506d93974faf8509251b4a85fbc Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:43:41 +0900 Subject: libata: kill ata_id_to_dma_mode() ata_id_to_dma_mode() isn't quite generic. The function is basically privately implemented ata_id_xfermask() combined with hardcoded mode printing and configuration which are specific to ata_generic. Kill the function and open code it in generic_set_mode() using generic xfermode handling functions. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/ata_generic.c | 17 ++++++++++++++++- drivers/ata/libata-core.c | 43 ------------------------------------------- include/linux/libata.h | 1 - 3 files changed, 16 insertions(+), 45 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/ata_generic.c b/drivers/ata/ata_generic.c index fb5434c8ae6e..d11a4f1fe86a 100644 --- a/drivers/ata/ata_generic.c +++ b/drivers/ata/ata_generic.c @@ -63,7 +63,22 @@ static int generic_set_mode(struct ata_link *link, struct ata_device **unused) /* We do need the right mode information for DMA or PIO and this comes from the current configuration flags */ if (dma_enabled & (1 << (5 + dev->devno))) { - ata_id_to_dma_mode(dev, XFER_MW_DMA_0); + unsigned int xfer_mask = ata_id_xfermask(dev->id); + const char *name; + + if (xfer_mask & (ATA_MASK_MWDMA | ATA_MASK_UDMA)) + name = ata_mode_string(xfer_mask); + else { + /* SWDMA perhaps? */ + name = "DMA"; + xfer_mask |= ata_xfer_mode2mask(XFER_MW_DMA_0); + } + + ata_dev_printk(dev, KERN_INFO, "configured for %s\n", + name); + + dev->xfer_mode = ata_xfer_mask2mode(xfer_mask); + dev->xfer_shift = ata_xfer_mode2shift(dev->xfer_mode); dev->flags &= ~ATA_DFLAG_PIO; } else { ata_dev_printk(dev, KERN_INFO, "configured for PIO\n"); diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index a70ed7b3bc55..ab84772235c9 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1287,48 +1287,6 @@ static int ata_hpa_resize(struct ata_device *dev) return 0; } -/** - * ata_id_to_dma_mode - Identify DMA mode from id block - * @dev: device to identify - * @unknown: mode to assume if we cannot tell - * - * Set up the timing values for the device based upon the identify - * reported values for the DMA mode. This function is used by drivers - * which rely upon firmware configured modes, but wish to report the - * mode correctly when possible. - * - * In addition we emit similarly formatted messages to the default - * ata_dev_set_mode handler, in order to provide consistency of - * presentation. - */ - -void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown) -{ - unsigned int mask; - u8 mode; - - /* Pack the DMA modes */ - mask = ((dev->id[63] >> 8) << ATA_SHIFT_MWDMA) & ATA_MASK_MWDMA; - if (dev->id[53] & 0x04) - mask |= ((dev->id[88] >> 8) << ATA_SHIFT_UDMA) & ATA_MASK_UDMA; - - /* Select the mode in use */ - mode = ata_xfer_mask2mode(mask); - - if (mode != 0xff) { - ata_dev_printk(dev, KERN_INFO, "configured for %s\n", - ata_mode_string(mask)); - } else { - /* SWDMA perhaps ? */ - mode = unknown; - ata_dev_printk(dev, KERN_INFO, "configured for DMA\n"); - } - - /* Configure the device reporting */ - dev->xfer_mode = mode; - dev->xfer_shift = ata_xfer_mode2shift(mode); -} - /** * ata_noop_dev_select - Select device 0/1 on ATA bus * @ap: ATA channel to manipulate @@ -7653,7 +7611,6 @@ EXPORT_SYMBOL_GPL(ata_host_resume); #endif /* CONFIG_PM */ EXPORT_SYMBOL_GPL(ata_id_string); EXPORT_SYMBOL_GPL(ata_id_c_string); -EXPORT_SYMBOL_GPL(ata_id_to_dma_mode); EXPORT_SYMBOL_GPL(ata_scsi_simulate); EXPORT_SYMBOL_GPL(ata_pio_need_iordy); diff --git a/include/linux/libata.h b/include/linux/libata.h index e2ed3bac8c5b..d33702fe78f9 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -890,7 +890,6 @@ extern void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs, unsigned int len); extern void ata_id_c_string(const u16 *id, unsigned char *s, unsigned int ofs, unsigned int len); -extern void ata_id_to_dma_mode(struct ata_device *dev, u8 unknown); extern void ata_bmdma_setup(struct ata_queued_cmd *qc); extern void ata_bmdma_start(struct ata_queued_cmd *qc); extern void ata_bmdma_stop(struct ata_queued_cmd *qc); -- cgit v1.2.3-59-g8ed1b From 7dc951aefdc1dc20228691b04867fb6195864d67 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:43:42 +0900 Subject: libata: xfer_mask is unsigned long not unsigned int Jeff says xfer_mask is unsigned long not unsigned int. Convert all xfermask fields and handling functions to deal with unsigned longs. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 29 +++++++++++++++-------------- include/linux/libata.h | 46 +++++++++++++++++++++++++--------------------- 2 files changed, 40 insertions(+), 35 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index ab84772235c9..711595390996 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -454,8 +454,9 @@ int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, * RETURNS: * Packed xfer_mask. */ -unsigned int ata_pack_xfermask(unsigned int pio_mask, - unsigned int mwdma_mask, unsigned int udma_mask) +unsigned long ata_pack_xfermask(unsigned long pio_mask, + unsigned long mwdma_mask, + unsigned long udma_mask) { return ((pio_mask << ATA_SHIFT_PIO) & ATA_MASK_PIO) | ((mwdma_mask << ATA_SHIFT_MWDMA) & ATA_MASK_MWDMA) | @@ -472,8 +473,8 @@ unsigned int ata_pack_xfermask(unsigned int pio_mask, * Unpack @xfer_mask into @pio_mask, @mwdma_mask and @udma_mask. * Any NULL distination masks will be ignored. */ -void ata_unpack_xfermask(unsigned int xfer_mask, unsigned int *pio_mask, - unsigned int *mwdma_mask, unsigned int *udma_mask) +void ata_unpack_xfermask(unsigned long xfer_mask, unsigned long *pio_mask, + unsigned long *mwdma_mask, unsigned long *udma_mask) { if (pio_mask) *pio_mask = (xfer_mask & ATA_MASK_PIO) >> ATA_SHIFT_PIO; @@ -506,7 +507,7 @@ static const struct ata_xfer_ent { * RETURNS: * Matching XFER_* value, 0xff if no match found. */ -u8 ata_xfer_mask2mode(unsigned int xfer_mask) +u8 ata_xfer_mask2mode(unsigned long xfer_mask) { int highbit = fls(xfer_mask) - 1; const struct ata_xfer_ent *ent; @@ -529,7 +530,7 @@ u8 ata_xfer_mask2mode(unsigned int xfer_mask) * RETURNS: * Matching xfer_mask, 0 if no match found. */ -unsigned int ata_xfer_mode2mask(u8 xfer_mode) +unsigned long ata_xfer_mode2mask(u8 xfer_mode) { const struct ata_xfer_ent *ent; @@ -552,7 +553,7 @@ unsigned int ata_xfer_mode2mask(u8 xfer_mode) * RETURNS: * Matching xfer_shift, -1 if no match found. */ -int ata_xfer_mode2shift(unsigned int xfer_mode) +int ata_xfer_mode2shift(unsigned long xfer_mode) { const struct ata_xfer_ent *ent; @@ -576,7 +577,7 @@ int ata_xfer_mode2shift(unsigned int xfer_mode) * Constant C string representing highest speed listed in * @mode_mask, or the constant C string "". */ -const char *ata_mode_string(unsigned int xfer_mask) +const char *ata_mode_string(unsigned long xfer_mask) { static const char * const xfer_mode_str[] = { "PIO0", @@ -1424,9 +1425,9 @@ static inline void ata_dump_id(const u16 *id) * RETURNS: * Computed xfermask */ -unsigned int ata_id_xfermask(const u16 *id) +unsigned long ata_id_xfermask(const u16 *id) { - unsigned int pio_mask, mwdma_mask, udma_mask; + unsigned long pio_mask, mwdma_mask, udma_mask; /* Usual case. Word 53 indicates word 64 is valid */ if (id[ATA_ID_FIELD_VALID] & (1 << 1)) { @@ -2050,7 +2051,7 @@ int ata_dev_configure(struct ata_device *dev) struct ata_eh_context *ehc = &dev->link->eh_context; int print_info = ehc->i.flags & ATA_EHI_PRINTINFO; const u16 *id = dev->id; - unsigned int xfer_mask; + unsigned long xfer_mask; char revbuf[7]; /* XYZ-99\0 */ char fwrevbuf[ATA_ID_FW_REV_LEN+1]; char modelbuf[ATA_ID_PROD_LEN+1]; @@ -2907,8 +2908,8 @@ int ata_timing_compute(struct ata_device *adev, unsigned short speed, int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel) { char buf[32]; - unsigned int orig_mask, xfer_mask; - unsigned int pio_mask, mwdma_mask, udma_mask; + unsigned long orig_mask, xfer_mask; + unsigned long pio_mask, mwdma_mask, udma_mask; int quiet, highbit; quiet = !!(sel & ATA_DNXFER_QUIET); @@ -3052,7 +3053,7 @@ int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) /* step 1: calculate xfer_mask */ ata_link_for_each_dev(dev, link) { - unsigned int pio_mask, dma_mask; + unsigned long pio_mask, dma_mask; unsigned int mode_mask; if (!ata_dev_enabled(dev)) diff --git a/include/linux/libata.h b/include/linux/libata.h index d33702fe78f9..d9eb20c67bb6 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -267,7 +267,7 @@ enum { PORT_DISABLED = 2, /* encoding various smaller bitmaps into a single - * unsigned int bitmap + * unsigned long bitmap */ ATA_NR_PIO_MODES = 7, ATA_NR_MWDMA_MODES = 5, @@ -277,13 +277,6 @@ enum { ATA_SHIFT_MWDMA = ATA_SHIFT_PIO + ATA_NR_PIO_MODES, ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, - ATA_MASK_PIO = ((1 << ATA_NR_PIO_MODES) - 1) - << ATA_SHIFT_PIO, - ATA_MASK_MWDMA = ((1 << ATA_NR_MWDMA_MODES) - 1) - << ATA_SHIFT_MWDMA, - ATA_MASK_UDMA = ((1 << ATA_NR_UDMA_MODES) - 1) - << ATA_SHIFT_UDMA, - /* size of buffer to pad xfers ending on unaligned boundaries */ ATA_DMA_PAD_SZ = 4, ATA_DMA_PAD_BUF_SZ = ATA_DMA_PAD_SZ * ATA_MAX_QUEUE, @@ -355,6 +348,15 @@ enum { ATA_DMA_MASK_CFA = (1 << 2), /* DMA on CF Card */ }; +enum ata_xfer_mask { + ATA_MASK_PIO = ((1LU << ATA_NR_PIO_MODES) - 1) + << ATA_SHIFT_PIO, + ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1) + << ATA_SHIFT_MWDMA, + ATA_MASK_UDMA = ((1LU << ATA_NR_UDMA_MODES) - 1) + << ATA_SHIFT_UDMA, +}; + enum hsm_task_states { HSM_ST_IDLE, /* no command on going */ HSM_ST_FIRST, /* (waiting the device to) @@ -526,9 +528,9 @@ struct ata_device { unsigned int cdb_len; /* per-dev xfer mask */ - unsigned int pio_mask; - unsigned int mwdma_mask; - unsigned int udma_mask; + unsigned long pio_mask; + unsigned long mwdma_mask; + unsigned long udma_mask; /* for CHS addressing */ u16 cylinders; /* Number of cylinders */ @@ -854,15 +856,16 @@ extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf); extern void ata_tf_to_fis(const struct ata_taskfile *tf, u8 pmp, int is_cmd, u8 *fis); extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); -extern unsigned int ata_pack_xfermask(unsigned int pio_mask, - unsigned int mwdma_mask, unsigned int udma_mask); -extern void ata_unpack_xfermask(unsigned int xfer_mask, unsigned int *pio_mask, - unsigned int *mwdma_mask, unsigned int *udma_mask); -extern u8 ata_xfer_mask2mode(unsigned int xfer_mask); -extern unsigned int ata_xfer_mode2mask(u8 xfer_mode); -extern int ata_xfer_mode2shift(unsigned int xfer_mode); -extern const char *ata_mode_string(unsigned int xfer_mask); -extern unsigned int ata_id_xfermask(const u16 *id); +extern unsigned long ata_pack_xfermask(unsigned long pio_mask, + unsigned long mwdma_mask, unsigned long udma_mask); +extern void ata_unpack_xfermask(unsigned long xfer_mask, + unsigned long *pio_mask, unsigned long *mwdma_mask, + unsigned long *udma_mask); +extern u8 ata_xfer_mask2mode(unsigned long xfer_mask); +extern unsigned long ata_xfer_mode2mask(u8 xfer_mode); +extern int ata_xfer_mode2shift(unsigned long xfer_mode); +extern const char *ata_mode_string(unsigned long xfer_mask); +extern unsigned long ata_id_xfermask(const u16 *id); extern void ata_noop_dev_select(struct ata_port *ap, unsigned int device); extern void ata_std_dev_select(struct ata_port *ap, unsigned int device); extern u8 ata_check_status(struct ata_port *ap); @@ -1001,7 +1004,8 @@ extern int ata_pci_prepare_sff_host(struct pci_dev *pdev, const struct ata_port_info * const * ppi, struct ata_host **r_host); extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); -extern unsigned long ata_pci_default_filter(struct ata_device *, unsigned long); +extern unsigned long ata_pci_default_filter(struct ata_device *dev, + unsigned long xfer_mask); #endif /* CONFIG_PCI */ /* -- cgit v1.2.3-59-g8ed1b From c88f90c3779cd5e710f2acdf59ad2bd0380de98d Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 27 Nov 2007 19:43:48 +0900 Subject: libata: add ATA_CBL_PATA_IGN ATA_CBL_PATA_UNK indicates that the cable type can't be determined from the host side and might be either 80c or 40c. libata applies drive or other generic limit in this case. However, there are controllers where both host and drive side detections are misimplemented and the driver has to rely solely on private method - peeking BIOS or ACPI configuration or using some other private mechanism. This patch adds ATA_CBL_PATA_IGN which tells libata to ignore the cable type completely and just let the LLD determine the transfer mode via host transfer mode masks and ->mode_filter(). Signed-off-by: Tejun Heo Cc: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 13 +++++++++++++ include/linux/ata.h | 7 ++++--- include/linux/libata.h | 1 + 3 files changed, 18 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 711595390996..62c4b328b0b6 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2353,6 +2353,18 @@ int ata_cable_unknown(struct ata_port *ap) return ATA_CBL_PATA_UNK; } +/** + * ata_cable_ignore - return ignored PATA cable. + * @ap: port + * + * Helper method for drivers which don't use cable type to limit + * transfer mode. + */ +int ata_cable_ignore(struct ata_port *ap) +{ + return ATA_CBL_PATA_IGN; +} + /** * ata_cable_sata - return SATA cable type * @ap: port @@ -7665,4 +7677,5 @@ EXPORT_SYMBOL_GPL(ata_dev_try_classify); EXPORT_SYMBOL_GPL(ata_cable_40wire); EXPORT_SYMBOL_GPL(ata_cable_80wire); EXPORT_SYMBOL_GPL(ata_cable_unknown); +EXPORT_SYMBOL_GPL(ata_cable_ignore); EXPORT_SYMBOL_GPL(ata_cable_sata); diff --git a/include/linux/ata.h b/include/linux/ata.h index 43fecf62773a..c17e9404c88d 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -286,9 +286,10 @@ enum { ATA_CBL_NONE = 0, ATA_CBL_PATA40 = 1, ATA_CBL_PATA80 = 2, - ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ - ATA_CBL_PATA_UNK = 4, - ATA_CBL_SATA = 5, + ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ + ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */ + ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */ + ATA_CBL_SATA = 6, /* SATA Status and Control Registers */ SCR_STATUS = 0, diff --git a/include/linux/libata.h b/include/linux/libata.h index d9eb20c67bb6..bdb7c6e13993 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -927,6 +927,7 @@ extern u8 ata_irq_on(struct ata_port *ap); extern int ata_cable_40wire(struct ata_port *ap); extern int ata_cable_80wire(struct ata_port *ap); extern int ata_cable_sata(struct ata_port *ap); +extern int ata_cable_ignore(struct ata_port *ap); extern int ata_cable_unknown(struct ata_port *ap); /* -- cgit v1.2.3-59-g8ed1b From 46a671430dfa4ca59c7a69f01326e99edddb21bd Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 4 Dec 2007 13:33:30 +0900 Subject: sata_promise: make pdc_atapi_pkt() use values from qc->tf Make pdc_atapi_pkt() use values from qc->tf instead of creating its own. This is to ease future ATAPI handling changes. Signed-off-by: Tejun Heo Cc: Mikael Pettersson Signed-off-by: Jeff Garzik --- drivers/ata/sata_promise.c | 34 +++++++++++++--------------------- 1 file changed, 13 insertions(+), 21 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c index 7914def54fa3..9638faaa8111 100644 --- a/drivers/ata/sata_promise.c +++ b/drivers/ata/sata_promise.c @@ -450,7 +450,7 @@ static void pdc_atapi_pkt(struct ata_queued_cmd *qc) struct pdc_port_priv *pp = ap->private_data; u8 *buf = pp->pkt; u32 *buf32 = (u32 *) buf; - unsigned int dev_sel, feature, nbytes; + unsigned int dev_sel, feature; /* set control bits (byte 0), zero delay seq id (byte 3), * and seq id (byte 2) @@ -473,45 +473,37 @@ static void pdc_atapi_pkt(struct ata_queued_cmd *qc) buf32[2] = 0; /* no next-packet */ /* select drive */ - if (sata_scr_valid(&ap->link)) { + if (sata_scr_valid(&ap->link)) dev_sel = PDC_DEVICE_SATA; - } else { - dev_sel = ATA_DEVICE_OBS; - if (qc->dev->devno != 0) - dev_sel |= ATA_DEV1; - } + else + dev_sel = qc->tf.device; + buf[12] = (1 << 5) | ATA_REG_DEVICE; buf[13] = dev_sel; buf[14] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_CLEAR_BSY; buf[15] = dev_sel; /* once more, waiting for BSY to clear */ buf[16] = (1 << 5) | ATA_REG_NSECT; - buf[17] = 0x00; + buf[17] = qc->tf.nsect; buf[18] = (1 << 5) | ATA_REG_LBAL; - buf[19] = 0x00; + buf[19] = qc->tf.lbal; /* set feature and byte counter registers */ - if (qc->tf.protocol != ATA_PROT_ATAPI_DMA) { + if (qc->tf.protocol != ATA_PROT_ATAPI_DMA) feature = PDC_FEATURE_ATAPI_PIO; - /* set byte counter register to real transfer byte count */ - nbytes = qc->nbytes; - if (nbytes > 0xffff) - nbytes = 0xffff; - } else { + else feature = PDC_FEATURE_ATAPI_DMA; - /* set byte counter register to 0 */ - nbytes = 0; - } + buf[20] = (1 << 5) | ATA_REG_FEATURE; buf[21] = feature; buf[22] = (1 << 5) | ATA_REG_BYTEL; - buf[23] = nbytes & 0xFF; + buf[23] = qc->tf.lbam; buf[24] = (1 << 5) | ATA_REG_BYTEH; - buf[25] = (nbytes >> 8) & 0xFF; + buf[25] = qc->tf.lbah; /* send ATAPI packet command 0xA0 */ buf[26] = (1 << 5) | ATA_REG_CMD; - buf[27] = ATA_CMD_PACKET; + buf[27] = qc->tf.command; /* select drive and check DRQ */ buf[28] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_WAIT_DRDY; -- cgit v1.2.3-59-g8ed1b From 9cde9ed151e170f2e2a530f7ec0032dfbe9f443b Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 24 Nov 2007 21:16:07 +0900 Subject: ata_piix: separate controller IDs into separate enum Separate controller IDs into a separate enum as Jeff requested. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/ata_piix.c | 34 ++++++++++++++++++---------------- 1 file changed, 18 insertions(+), 16 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index 0d8bd19a5345..2db635817edf 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -118,22 +118,6 @@ enum { PIIX_80C_PRI = (1 << 5) | (1 << 4), PIIX_80C_SEC = (1 << 7) | (1 << 6), - /* controller IDs */ - piix_pata_mwdma = 0, /* PIIX3 MWDMA only */ - piix_pata_33, /* PIIX4 at 33Mhz */ - ich_pata_33, /* ICH up to UDMA 33 only */ - ich_pata_66, /* ICH up to 66 Mhz */ - ich_pata_100, /* ICH up to UDMA 100 */ - ich5_sata, - ich6_sata, - ich6_sata_ahci, - ich6m_sata_ahci, - ich8_sata_ahci, - ich8_2port_sata, - ich8m_apple_sata_ahci, /* locks up on second port enable */ - tolapai_sata_ahci, - piix_pata_vmw, /* PIIX4 for VMware, spurious DMA_ERR */ - /* constants for mapping table */ P0 = 0, /* port 0 */ P1 = 1, /* port 1 */ @@ -149,6 +133,24 @@ enum { PIIX_HOST_BROKEN_SUSPEND = (1 << 24), }; +enum piix_controller_ids { + /* controller IDs */ + piix_pata_mwdma, /* PIIX3 MWDMA only */ + piix_pata_33, /* PIIX4 at 33Mhz */ + ich_pata_33, /* ICH up to UDMA 33 only */ + ich_pata_66, /* ICH up to 66 Mhz */ + ich_pata_100, /* ICH up to UDMA 100 */ + ich5_sata, + ich6_sata, + ich6_sata_ahci, + ich6m_sata_ahci, + ich8_sata_ahci, + ich8_2port_sata, + ich8m_apple_sata_ahci, /* locks up on second port enable */ + tolapai_sata_ahci, + piix_pata_vmw, /* PIIX4 for VMware, spurious DMA_ERR */ +}; + struct piix_map_db { const u32 mask; const u16 port_enable; -- cgit v1.2.3-59-g8ed1b From 7c77fa4d51b1480bcec2e898c94d6912fe063c16 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 18 Dec 2007 16:33:03 +0900 Subject: libata: separate out ata_acpi_gtm_xfermask() from pacpi_discover_modes() Finding out matching transfer mode from ACPI GTM values is useful for other purposes too. Separate out the function and timing tables from pata_acpi::pacpi_discover_modes(). Other than checking shared-configuration bit after doing ata_acpi_gtm() in pacpi_discover_modes() which should be safe, this patch doesn't introduce any behavior change. Signed-off-by: Tejun Heo Cc: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/libata-acpi.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++ drivers/ata/pata_acpi.c | 66 +++++++-------------------------------- include/linux/libata.h | 25 +++++++++++++++ 3 files changed, 114 insertions(+), 55 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index ebc4dfcf2f19..d6697baf243d 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -441,6 +441,84 @@ static int ata_dev_get_GTF(struct ata_device *dev, struct ata_acpi_gtf **gtf) return rc; } +/* Welcome to ACPI, bring a bucket */ +const unsigned int ata_acpi_pio_cycle[7] = { + 600, 383, 240, 180, 120, 100, 80 +}; +EXPORT_SYMBOL_GPL(ata_acpi_pio_cycle); + +const unsigned int ata_acpi_mwdma_cycle[5] = { + 480, 150, 120, 100, 80 +}; +EXPORT_SYMBOL_GPL(ata_acpi_mwdma_cycle); + +const unsigned int ata_acpi_udma_cycle[7] = { + 120, 80, 60, 45, 30, 20, 15 +}; +EXPORT_SYMBOL_GPL(ata_acpi_udma_cycle); + +/** + * ata_acpi_gtm_xfermode - determine xfermode from GTM parameter + * @dev: target device + * @gtm: GTM parameter to use + * + * Determine xfermask for @dev from @gtm. + * + * LOCKING: + * None. + * + * RETURNS: + * Determined xfermask. + */ +unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, + const struct ata_acpi_gtm *gtm) +{ + int unit, i; + u32 t; + unsigned long mask = (0x7f << ATA_SHIFT_UDMA) | (0x7 << ATA_SHIFT_MWDMA) | (0x1F << ATA_SHIFT_PIO); + + /* we always use the 0 slot for crap hardware */ + unit = dev->devno; + if (!(gtm->flags & 0x10)) + unit = 0; + + /* start by scanning for PIO modes */ + for (i = 0; i < 7; i++) { + t = gtm->drive[unit].pio; + if (t <= ata_acpi_pio_cycle[i]) { + mask |= (2 << (ATA_SHIFT_PIO + i)) - 1; + break; + } + } + + /* See if we have MWDMA or UDMA data. We don't bother with + * MWDMA if UDMA is available as this means the BIOS set UDMA + * and our error changedown if it works is UDMA to PIO anyway. + */ + if (gtm->flags & (1 << (2 * unit))) { + /* MWDMA */ + for (i = 0; i < 5; i++) { + t = gtm->drive[unit].dma; + if (t <= ata_acpi_mwdma_cycle[i]) { + mask |= (2 << (ATA_SHIFT_MWDMA + i)) - 1; + break; + } + } + } else { + /* UDMA */ + for (i = 0; i < 7; i++) { + t = gtm->drive[unit].dma; + if (t <= ata_acpi_udma_cycle[i]) { + mask |= (2 << (ATA_SHIFT_UDMA + i)) - 1; + break; + } + } + } + + return mask; +} +EXPORT_SYMBOL_GPL(ata_acpi_gtm_xfermask); + /** * ata_acpi_cbl_80wire - Check for 80 wire cable * @ap: Port to check diff --git a/drivers/ata/pata_acpi.c b/drivers/ata/pata_acpi.c index e4542ab9c7f8..a4737a3d31cb 100644 --- a/drivers/ata/pata_acpi.c +++ b/drivers/ata/pata_acpi.c @@ -81,17 +81,6 @@ static void pacpi_error_handler(struct ata_port *ap) NULL, ata_std_postreset); } -/* Welcome to ACPI, bring a bucket */ -static const unsigned int pio_cycle[7] = { - 600, 383, 240, 180, 120, 100, 80 -}; -static const unsigned int mwdma_cycle[5] = { - 480, 150, 120, 100, 80 -}; -static const unsigned int udma_cycle[7] = { - 120, 80, 60, 45, 30, 20, 15 -}; - /** * pacpi_discover_modes - filter non ACPI modes * @adev: ATA device @@ -103,56 +92,20 @@ static const unsigned int udma_cycle[7] = { static unsigned long pacpi_discover_modes(struct ata_port *ap, struct ata_device *adev) { - int unit = adev->devno; struct pata_acpi *acpi = ap->private_data; - int i; - u32 t; - unsigned long mask = (0x7f << ATA_SHIFT_UDMA) | (0x7 << ATA_SHIFT_MWDMA) | (0x1F << ATA_SHIFT_PIO); - struct ata_acpi_gtm probe; + unsigned int xfer_mask; probe = acpi->gtm; - /* We always use the 0 slot for crap hardware */ - if (!(probe.flags & 0x10)) - unit = 0; - ata_acpi_gtm(ap, &probe); - /* Start by scanning for PIO modes */ - for (i = 0; i < 7; i++) { - t = probe.drive[unit].pio; - if (t <= pio_cycle[i]) { - mask |= (2 << (ATA_SHIFT_PIO + i)) - 1; - break; - } - } + xfer_mask = ata_acpi_gtm_xfermask(adev, &probe); - /* See if we have MWDMA or UDMA data. We don't bother with MWDMA - if UDMA is availabe as this means the BIOS set UDMA and our - error changedown if it works is UDMA to PIO anyway */ - if (probe.flags & (1 << (2 * unit))) { - /* MWDMA */ - for (i = 0; i < 5; i++) { - t = probe.drive[unit].dma; - if (t <= mwdma_cycle[i]) { - mask |= (2 << (ATA_SHIFT_MWDMA + i)) - 1; - break; - } - } - } else { - /* UDMA */ - for (i = 0; i < 7; i++) { - t = probe.drive[unit].dma; - if (t <= udma_cycle[i]) { - mask |= (2 << (ATA_SHIFT_UDMA + i)) - 1; - break; - } - } - } - if (mask & (0xF8 << ATA_SHIFT_UDMA)) + if (xfer_mask & (0xF8 << ATA_SHIFT_UDMA)) ap->cbl = ATA_CBL_PATA80; - return mask; + + return xfer_mask; } /** @@ -185,7 +138,8 @@ static void pacpi_set_piomode(struct ata_port *ap, struct ata_device *adev) unit = 0; /* Now stuff the nS values into the structure */ - acpi->gtm.drive[unit].pio = pio_cycle[adev->pio_mode - XFER_PIO_0]; + acpi->gtm.drive[unit].pio = + ata_acpi_pio_cycle[adev->pio_mode - XFER_PIO_0]; ata_acpi_stm(ap, &acpi->gtm); /* See what mode we actually got */ ata_acpi_gtm(ap, &acpi->gtm); @@ -207,10 +161,12 @@ static void pacpi_set_dmamode(struct ata_port *ap, struct ata_device *adev) /* Now stuff the nS values into the structure */ if (adev->dma_mode >= XFER_UDMA_0) { - acpi->gtm.drive[unit].dma = udma_cycle[adev->dma_mode - XFER_UDMA_0]; + acpi->gtm.drive[unit].dma = + ata_acpi_udma_cycle[adev->dma_mode - XFER_UDMA_0]; acpi->gtm.flags |= (1 << (2 * unit)); } else { - acpi->gtm.drive[unit].dma = mwdma_cycle[adev->dma_mode - XFER_MW_DMA_0]; + acpi->gtm.drive[unit].dma = + ata_acpi_mwdma_cycle[adev->dma_mode - XFER_MW_DMA_0]; acpi->gtm.flags &= ~(1 << (2 * unit)); } ata_acpi_stm(ap, &acpi->gtm); diff --git a/include/linux/libata.h b/include/linux/libata.h index bdb7c6e13993..8022e5b2224d 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -961,6 +961,10 @@ enum { /* libata-acpi.c */ #ifdef CONFIG_ATA_ACPI +extern const unsigned int ata_acpi_pio_cycle[7]; +extern const unsigned int ata_acpi_mwdma_cycle[5]; +extern const unsigned int ata_acpi_udma_cycle[7]; + static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) { if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) @@ -970,12 +974,33 @@ static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) extern int ata_acpi_cbl_80wire(struct ata_port *ap); int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); +unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, + const struct ata_acpi_gtm *gtm); + #else static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) { return NULL; } static inline int ata_acpi_cbl_80wire(struct ata_port *ap) { return 0; } + +static inline int ata_acpi_stm(const struct ata_port *ap, + struct ata_acpi_gtm *stm) +{ + return -ENOSYS; +} + +static inline int ata_acpi_gtm(const struct ata_port *ap, + struct ata_acpi_gtm *stm) +{ + return -ENOSYS; +} + +static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, + const struct ata_acpi_gtm *gtm) +{ + return 0; +} #endif #ifdef CONFIG_PCI -- cgit v1.2.3-59-g8ed1b From 5df91a25df08d85700fef5fd59bb1873273e5ef5 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 18 Dec 2007 16:33:04 +0900 Subject: libata: fix ata_acpi_gtm_xfermask() ata_acpi_gtm_xfermask() as separated out from pacpi_discover_modes() has various bugs. Fix them. * The wrong comparison operator is used when finding for matching cycle resulting totally bogus result. * With the comparion operator fixed, boundary condtion handling is clumsy. * Setting of any DMA mask bit set all bits in PIO mask. * MWDMA and UDMA blocks are swapped. Signed-off-by: Tejun Heo Cc: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/libata-acpi.c | 42 +++++++++++++++++++++--------------------- 1 file changed, 21 insertions(+), 21 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index d6697baf243d..9f0b208afcf5 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -473,49 +473,49 @@ EXPORT_SYMBOL_GPL(ata_acpi_udma_cycle); unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, const struct ata_acpi_gtm *gtm) { + unsigned long pio_mask = 0, mwdma_mask = 0, udma_mask = 0; int unit, i; u32 t; - unsigned long mask = (0x7f << ATA_SHIFT_UDMA) | (0x7 << ATA_SHIFT_MWDMA) | (0x1F << ATA_SHIFT_PIO); /* we always use the 0 slot for crap hardware */ unit = dev->devno; if (!(gtm->flags & 0x10)) unit = 0; + /* Values larger than the longest cycle results in 0 mask + * while values equal to smaller than the shortest cycle + * results in mask which includes all supported modes. + * Disabled transfer method has the value of 0xffffffff which + * will always result in 0 mask. + */ + /* start by scanning for PIO modes */ - for (i = 0; i < 7; i++) { - t = gtm->drive[unit].pio; - if (t <= ata_acpi_pio_cycle[i]) { - mask |= (2 << (ATA_SHIFT_PIO + i)) - 1; + t = gtm->drive[unit].pio; + for (i = 0; i < ARRAY_SIZE(ata_acpi_pio_cycle); i++) + if (t > ata_acpi_pio_cycle[i]) break; - } - } + pio_mask = (1 << i) - 1; /* See if we have MWDMA or UDMA data. We don't bother with * MWDMA if UDMA is available as this means the BIOS set UDMA * and our error changedown if it works is UDMA to PIO anyway. */ - if (gtm->flags & (1 << (2 * unit))) { + t = gtm->drive[unit].dma; + if (!(gtm->flags & (1 << (2 * unit)))) { /* MWDMA */ - for (i = 0; i < 5; i++) { - t = gtm->drive[unit].dma; - if (t <= ata_acpi_mwdma_cycle[i]) { - mask |= (2 << (ATA_SHIFT_MWDMA + i)) - 1; + for (i = 0; i < ARRAY_SIZE(ata_acpi_mwdma_cycle); i++) + if (t > ata_acpi_mwdma_cycle[i]) break; - } - } + mwdma_mask = (1 << i) - 1; } else { /* UDMA */ - for (i = 0; i < 7; i++) { - t = gtm->drive[unit].dma; - if (t <= ata_acpi_udma_cycle[i]) { - mask |= (2 << (ATA_SHIFT_UDMA + i)) - 1; + for (i = 0; i < ARRAY_SIZE(ata_acpi_udma_cycle); i++) + if (t > ata_acpi_udma_cycle[i]) break; - } - } + udma_mask = (1 << i) - 1; } - return mask; + return ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask); } EXPORT_SYMBOL_GPL(ata_acpi_gtm_xfermask); -- cgit v1.2.3-59-g8ed1b From a0f79b929acaba10d4780acd2543eff20bf4b5b0 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 18 Dec 2007 16:33:05 +0900 Subject: libata: implement ata_timing_cycle2mode() and use it in libata-acpi and pata_acpi libata-acpi is using separate timing tables for transfer modes although libata-core has the complete ata_timing table. Implement ata_timing_cycle2mode() to look for matching mode given transfer type and cycle duration and use it in libata-acpi and pata_acpi to replace private timing tables. Signed-off-by: Tejun Heo Cc: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/libata-acpi.c | 62 ++++++++++++----------------------------------- drivers/ata/libata-core.c | 52 +++++++++++++++++++++++++++++++++++++++ drivers/ata/pata_acpi.c | 13 +++++----- include/linux/libata.h | 5 +--- 4 files changed, 75 insertions(+), 57 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index 9f0b208afcf5..a6f1a6b56d8c 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -441,22 +441,6 @@ static int ata_dev_get_GTF(struct ata_device *dev, struct ata_acpi_gtf **gtf) return rc; } -/* Welcome to ACPI, bring a bucket */ -const unsigned int ata_acpi_pio_cycle[7] = { - 600, 383, 240, 180, 120, 100, 80 -}; -EXPORT_SYMBOL_GPL(ata_acpi_pio_cycle); - -const unsigned int ata_acpi_mwdma_cycle[5] = { - 480, 150, 120, 100, 80 -}; -EXPORT_SYMBOL_GPL(ata_acpi_mwdma_cycle); - -const unsigned int ata_acpi_udma_cycle[7] = { - 120, 80, 60, 45, 30, 20, 15 -}; -EXPORT_SYMBOL_GPL(ata_acpi_udma_cycle); - /** * ata_acpi_gtm_xfermode - determine xfermode from GTM parameter * @dev: target device @@ -473,49 +457,33 @@ EXPORT_SYMBOL_GPL(ata_acpi_udma_cycle); unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, const struct ata_acpi_gtm *gtm) { - unsigned long pio_mask = 0, mwdma_mask = 0, udma_mask = 0; - int unit, i; - u32 t; + unsigned long xfer_mask = 0; + unsigned int type; + int unit; + u8 mode; /* we always use the 0 slot for crap hardware */ unit = dev->devno; if (!(gtm->flags & 0x10)) unit = 0; - /* Values larger than the longest cycle results in 0 mask - * while values equal to smaller than the shortest cycle - * results in mask which includes all supported modes. - * Disabled transfer method has the value of 0xffffffff which - * will always result in 0 mask. - */ - - /* start by scanning for PIO modes */ - t = gtm->drive[unit].pio; - for (i = 0; i < ARRAY_SIZE(ata_acpi_pio_cycle); i++) - if (t > ata_acpi_pio_cycle[i]) - break; - pio_mask = (1 << i) - 1; + /* PIO */ + mode = ata_timing_cycle2mode(ATA_SHIFT_PIO, gtm->drive[unit].pio); + xfer_mask |= ata_xfer_mode2mask(mode); /* See if we have MWDMA or UDMA data. We don't bother with * MWDMA if UDMA is available as this means the BIOS set UDMA * and our error changedown if it works is UDMA to PIO anyway. */ - t = gtm->drive[unit].dma; - if (!(gtm->flags & (1 << (2 * unit)))) { - /* MWDMA */ - for (i = 0; i < ARRAY_SIZE(ata_acpi_mwdma_cycle); i++) - if (t > ata_acpi_mwdma_cycle[i]) - break; - mwdma_mask = (1 << i) - 1; - } else { - /* UDMA */ - for (i = 0; i < ARRAY_SIZE(ata_acpi_udma_cycle); i++) - if (t > ata_acpi_udma_cycle[i]) - break; - udma_mask = (1 << i) - 1; - } + if (!(gtm->flags & (1 << (2 * unit)))) + type = ATA_SHIFT_MWDMA; + else + type = ATA_SHIFT_UDMA; + + mode = ata_timing_cycle2mode(type, gtm->drive[unit].dma); + xfer_mask |= ata_xfer_mode2mask(mode); - return ata_pack_xfermask(pio_mask, mwdma_mask, udma_mask); + return xfer_mask; } EXPORT_SYMBOL_GPL(ata_acpi_gtm_xfermask); diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 62c4b328b0b6..f01c1734b1d0 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2902,6 +2902,57 @@ int ata_timing_compute(struct ata_device *adev, unsigned short speed, return 0; } +/** + * ata_timing_cycle2mode - find xfer mode for the specified cycle duration + * @xfer_shift: ATA_SHIFT_* value for transfer type to examine. + * @cycle: cycle duration in ns + * + * Return matching xfer mode for @cycle. The returned mode is of + * the transfer type specified by @xfer_shift. If @cycle is too + * slow for @xfer_shift, 0xff is returned. If @cycle is faster + * than the fastest known mode, the fasted mode is returned. + * + * LOCKING: + * None. + * + * RETURNS: + * Matching xfer_mode, 0xff if no match found. + */ +u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle) +{ + u8 base_mode = 0xff, last_mode = 0xff; + const struct ata_xfer_ent *ent; + const struct ata_timing *t; + + for (ent = ata_xfer_tbl; ent->shift >= 0; ent++) + if (ent->shift == xfer_shift) + base_mode = ent->base; + + for (t = ata_timing_find_mode(base_mode); + t && ata_xfer_mode2shift(t->mode) == xfer_shift; t++) { + unsigned short this_cycle; + + switch (xfer_shift) { + case ATA_SHIFT_PIO: + case ATA_SHIFT_MWDMA: + this_cycle = t->cycle; + break; + case ATA_SHIFT_UDMA: + this_cycle = t->udma; + break; + default: + return 0xff; + } + + if (cycle > this_cycle) + break; + + last_mode = t->mode; + } + + return last_mode; +} + /** * ata_down_xfermask_limit - adjust dev xfer masks downward * @dev: Device to adjust xfer masks @@ -7630,6 +7681,7 @@ EXPORT_SYMBOL_GPL(ata_pio_need_iordy); EXPORT_SYMBOL_GPL(ata_timing_find_mode); EXPORT_SYMBOL_GPL(ata_timing_compute); EXPORT_SYMBOL_GPL(ata_timing_merge); +EXPORT_SYMBOL_GPL(ata_timing_cycle2mode); #ifdef CONFIG_PCI EXPORT_SYMBOL_GPL(pci_test_config_bits); diff --git a/drivers/ata/pata_acpi.c b/drivers/ata/pata_acpi.c index a4737a3d31cb..244098a80ce4 100644 --- a/drivers/ata/pata_acpi.c +++ b/drivers/ata/pata_acpi.c @@ -133,13 +133,14 @@ static void pacpi_set_piomode(struct ata_port *ap, struct ata_device *adev) { int unit = adev->devno; struct pata_acpi *acpi = ap->private_data; + const struct ata_timing *t; if (!(acpi->gtm.flags & 0x10)) unit = 0; /* Now stuff the nS values into the structure */ - acpi->gtm.drive[unit].pio = - ata_acpi_pio_cycle[adev->pio_mode - XFER_PIO_0]; + t = ata_timing_find_mode(adev->pio_mode); + acpi->gtm.drive[unit].pio = t->cycle; ata_acpi_stm(ap, &acpi->gtm); /* See what mode we actually got */ ata_acpi_gtm(ap, &acpi->gtm); @@ -155,18 +156,18 @@ static void pacpi_set_dmamode(struct ata_port *ap, struct ata_device *adev) { int unit = adev->devno; struct pata_acpi *acpi = ap->private_data; + const struct ata_timing *t; if (!(acpi->gtm.flags & 0x10)) unit = 0; /* Now stuff the nS values into the structure */ + t = ata_timing_find_mode(adev->dma_mode); if (adev->dma_mode >= XFER_UDMA_0) { - acpi->gtm.drive[unit].dma = - ata_acpi_udma_cycle[adev->dma_mode - XFER_UDMA_0]; + acpi->gtm.drive[unit].dma = t->udma; acpi->gtm.flags |= (1 << (2 * unit)); } else { - acpi->gtm.drive[unit].dma = - ata_acpi_mwdma_cycle[adev->dma_mode - XFER_MW_DMA_0]; + acpi->gtm.drive[unit].dma = t->cycle; acpi->gtm.flags &= ~(1 << (2 * unit)); } ata_acpi_stm(ap, &acpi->gtm); diff --git a/include/linux/libata.h b/include/linux/libata.h index 8022e5b2224d..8ede93b5c7a6 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -941,6 +941,7 @@ extern int ata_timing_compute(struct ata_device *, unsigned short, extern void ata_timing_merge(const struct ata_timing *, const struct ata_timing *, struct ata_timing *, unsigned int); +extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); enum { ATA_TIMING_SETUP = (1 << 0), @@ -961,10 +962,6 @@ enum { /* libata-acpi.c */ #ifdef CONFIG_ATA_ACPI -extern const unsigned int ata_acpi_pio_cycle[7]; -extern const unsigned int ata_acpi_mwdma_cycle[5]; -extern const unsigned int ata_acpi_udma_cycle[7]; - static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) { if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID) -- cgit v1.2.3-59-g8ed1b From 021ee9a6da1cfc57f6a6c769c3c898bdd4753108 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 18 Dec 2007 16:33:06 +0900 Subject: libata: reimplement ata_acpi_cbl_80wire() using ata_acpi_gtm_xfermask() Reimplement ata_acpi_cbl_80wire() using ata_acpi_gtm_xfermask() and while at it relocate the function below ata_acpi_gtm_xfermask(). New ata_acpi_cbl_80wire() implementation takes @gtm, in both pata_via and pata_amd, use the initial GTM value. Both are trying to peek initial BIOS configuration, so using initial caching value makes sense. This fixes ACPI part of cable detection in pata_amd which previously always returned 0 because configuring PIO0 during reset clears DMA configuration. Signed-off-by: Tejun Heo Cc: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/libata-acpi.c | 41 ++++++++++++++++------------------------- drivers/ata/pata_amd.c | 3 ++- drivers/ata/pata_via.c | 3 ++- include/linux/libata.h | 10 +++++++--- 4 files changed, 27 insertions(+), 30 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index a6f1a6b56d8c..9e8ec19260af 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -490,38 +490,29 @@ EXPORT_SYMBOL_GPL(ata_acpi_gtm_xfermask); /** * ata_acpi_cbl_80wire - Check for 80 wire cable * @ap: Port to check + * @gtm: GTM data to use * - * Return 1 if the ACPI mode data for this port indicates the BIOS selected - * an 80wire mode. + * Return 1 if the @gtm indicates the BIOS selected an 80wire mode. */ - -int ata_acpi_cbl_80wire(struct ata_port *ap) +int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm) { - const struct ata_acpi_gtm *gtm = ata_acpi_init_gtm(ap); - int valid = 0; + struct ata_device *dev; - if (!gtm) - return 0; + ata_link_for_each_dev(dev, &ap->link) { + unsigned long xfer_mask, udma_mask; + + if (!ata_dev_enabled(dev)) + continue; + + xfer_mask = ata_acpi_gtm_xfermask(dev, gtm); + ata_unpack_xfermask(xfer_mask, NULL, NULL, &udma_mask); + + if (udma_mask & ~ATA_UDMA_MASK_40C) + return 1; + } - /* Split timing, DMA enabled */ - if ((gtm->flags & 0x11) == 0x11 && gtm->drive[0].dma < 55) - valid |= 1; - if ((gtm->flags & 0x14) == 0x14 && gtm->drive[1].dma < 55) - valid |= 2; - /* Shared timing, DMA enabled */ - if ((gtm->flags & 0x11) == 0x01 && gtm->drive[0].dma < 55) - valid |= 1; - if ((gtm->flags & 0x14) == 0x04 && gtm->drive[0].dma < 55) - valid |= 2; - - /* Drive check */ - if ((valid & 1) && ata_dev_enabled(&ap->link.device[0])) - return 1; - if ((valid & 2) && ata_dev_enabled(&ap->link.device[1])) - return 1; return 0; } - EXPORT_SYMBOL_GPL(ata_acpi_cbl_80wire); static void ata_acpi_gtf_to_tf(struct ata_device *dev, diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c index 3cc27b514654..e71125a4bd9b 100644 --- a/drivers/ata/pata_amd.c +++ b/drivers/ata/pata_amd.c @@ -272,7 +272,8 @@ static int nv_cable_detect(struct ata_port *ap) if ((udma & 0xC4) == 0xC4 || (udma & 0xC400) == 0xC400) cbl = ATA_CBL_PATA80; /* And a triple check across suspend/resume with ACPI around */ - if (ata_acpi_cbl_80wire(ap)) + if (ata_acpi_init_gtm(ap) && + ata_acpi_cbl_80wire(ap, ata_acpi_init_gtm(ap))) cbl = ATA_CBL_PATA80; return cbl; } diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c index 453d72bf2598..39627ab684bf 100644 --- a/drivers/ata/pata_via.c +++ b/drivers/ata/pata_via.c @@ -185,7 +185,8 @@ static int via_cable_detect(struct ata_port *ap) { if (ata66 & (0x10100000 >> (16 * ap->port_no))) return ATA_CBL_PATA80; /* Check with ACPI so we can spot BIOS reported SATA bridges */ - if (ata_acpi_cbl_80wire(ap)) + if (ata_acpi_init_gtm(ap) && + ata_acpi_cbl_80wire(ap, ata_acpi_init_gtm(ap))) return ATA_CBL_PATA80; return ATA_CBL_PATA40; } diff --git a/include/linux/libata.h b/include/linux/libata.h index 8ede93b5c7a6..cc4eaef6f889 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -968,18 +968,16 @@ static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) return &ap->__acpi_init_gtm; return NULL; } -extern int ata_acpi_cbl_80wire(struct ata_port *ap); int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm); int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm); unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev, const struct ata_acpi_gtm *gtm); - +int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm); #else static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap) { return NULL; } -static inline int ata_acpi_cbl_80wire(struct ata_port *ap) { return 0; } static inline int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm) @@ -998,6 +996,12 @@ static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev, { return 0; } + +static inline int ata_acpi_cbl_80wire(struct ata_port *ap, + const struct ata_acpi_gtm *gtm) +{ + return 0; +} #endif #ifdef CONFIG_PCI -- cgit v1.2.3-59-g8ed1b From ce54d1616302117fa98513ae916bb3333e1c02ea Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 18 Dec 2007 16:33:07 +0900 Subject: pata_amd: update mode selection for NV PATAs Cable detection on NV PATA hosts isn't implemented and the CBLID- cable isn't wired according to the sepc either, so both host-side and generic drive-side cable detections are broken. Till now, nv_cable_detect() relied on peeking BIOS and ACPI configurations to upgrade to 80C but this often results in misdetection of 40C cable as 80C. Also, the original implementation was broken in that by the time BIOS configuration is read it has already been cleared by programming PIO0 during reset. This patch reimplements NV mode selection such that... * BIOS configuration value is stored during driver attach and restored on detach. * Cable type is fixed to ATA_CBL_PATA_IGN and mode selection is soley done by nv_mode_filter() which peeks both BIOS and ACPI configurations and filter accordingly. Signed-off-by: Tejun Heo Cc: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/pata_amd.c | 129 +++++++++++++++++++++++++++++++++++-------------- 1 file changed, 93 insertions(+), 36 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c index e71125a4bd9b..761a66608d7b 100644 --- a/drivers/ata/pata_amd.c +++ b/drivers/ata/pata_amd.c @@ -220,6 +220,62 @@ static void amd133_set_dmamode(struct ata_port *ap, struct ata_device *adev) timing_setup(ap, adev, 0x40, adev->dma_mode, 4); } +/* Both host-side and drive-side detection results are worthless on NV + * PATAs. Ignore them and just follow what BIOS configured. Both the + * current configuration in PCI config reg and ACPI GTM result are + * cached during driver attach and are consulted to select transfer + * mode. + */ +static unsigned long nv_mode_filter(struct ata_device *dev, + unsigned long xfer_mask) +{ + static const unsigned int udma_mask_map[] = + { ATA_UDMA2, ATA_UDMA1, ATA_UDMA0, 0, + ATA_UDMA3, ATA_UDMA4, ATA_UDMA5, ATA_UDMA6 }; + struct ata_port *ap = dev->link->ap; + char acpi_str[32] = ""; + u32 saved_udma, udma; + const struct ata_acpi_gtm *gtm; + unsigned long bios_limit = 0, acpi_limit = 0, limit; + + /* find out what BIOS configured */ + udma = saved_udma = (unsigned long)ap->host->private_data; + + if (ap->port_no == 0) + udma >>= 16; + if (dev->devno == 0) + udma >>= 8; + + if ((udma & 0xc0) == 0xc0) + bios_limit = ata_pack_xfermask(0, 0, udma_mask_map[udma & 0x7]); + + /* consult ACPI GTM too */ + gtm = ata_acpi_init_gtm(ap); + if (gtm) { + acpi_limit = ata_acpi_gtm_xfermask(dev, gtm); + + snprintf(acpi_str, sizeof(acpi_str), " (%u:%u:0x%x)", + gtm->drive[0].dma, gtm->drive[1].dma, gtm->flags); + } + + /* be optimistic, EH can take care of things if something goes wrong */ + limit = bios_limit | acpi_limit; + + /* If PIO or DMA isn't configured at all, don't limit. Let EH + * handle it. + */ + if (!(limit & ATA_MASK_PIO)) + limit |= ATA_MASK_PIO; + if (!(limit & (ATA_MASK_MWDMA | ATA_MASK_UDMA))) + limit |= ATA_MASK_MWDMA | ATA_MASK_UDMA; + + ata_port_printk(ap, KERN_DEBUG, "nv_mode_filter: 0x%lx&0x%lx->0x%lx, " + "BIOS=0x%lx (0x%x) ACPI=0x%lx%s\n", + xfer_mask, limit, xfer_mask & limit, bios_limit, + saved_udma, acpi_limit, acpi_str); + + return xfer_mask & limit; +} /** * nv_probe_init - cable detection @@ -252,32 +308,6 @@ static void nv_error_handler(struct ata_port *ap) ata_std_postreset); } -static int nv_cable_detect(struct ata_port *ap) -{ - static const u8 bitmask[2] = {0x03, 0x0C}; - struct pci_dev *pdev = to_pci_dev(ap->host->dev); - u8 ata66; - u16 udma; - int cbl; - - pci_read_config_byte(pdev, 0x52, &ata66); - if (ata66 & bitmask[ap->port_no]) - cbl = ATA_CBL_PATA80; - else - cbl = ATA_CBL_PATA40; - - /* We now have to double check because the Nvidia boxes BIOS - doesn't always set the cable bits but does set mode bits */ - pci_read_config_word(pdev, 0x62 - 2 * ap->port_no, &udma); - if ((udma & 0xC4) == 0xC4 || (udma & 0xC400) == 0xC400) - cbl = ATA_CBL_PATA80; - /* And a triple check across suspend/resume with ACPI around */ - if (ata_acpi_init_gtm(ap) && - ata_acpi_cbl_80wire(ap, ata_acpi_init_gtm(ap))) - cbl = ATA_CBL_PATA80; - return cbl; -} - /** * nv100_set_piomode - set initial PIO mode data * @ap: ATA interface @@ -315,6 +345,14 @@ static void nv133_set_dmamode(struct ata_port *ap, struct ata_device *adev) timing_setup(ap, adev, 0x50, adev->dma_mode, 4); } +static void nv_host_stop(struct ata_host *host) +{ + u32 udma = (unsigned long)host->private_data; + + /* restore PCI config register 0x60 */ + pci_write_config_dword(to_pci_dev(host->dev), 0x60, udma); +} + static struct scsi_host_template amd_sht = { .module = THIS_MODULE, .name = DRV_NAME, @@ -479,7 +517,8 @@ static struct ata_port_operations nv100_port_ops = { .thaw = ata_bmdma_thaw, .error_handler = nv_error_handler, .post_internal_cmd = ata_bmdma_post_internal_cmd, - .cable_detect = nv_cable_detect, + .cable_detect = ata_cable_ignore, + .mode_filter = nv_mode_filter, .bmdma_setup = ata_bmdma_setup, .bmdma_start = ata_bmdma_start, @@ -496,6 +535,7 @@ static struct ata_port_operations nv100_port_ops = { .irq_on = ata_irq_on, .port_start = ata_sff_port_start, + .host_stop = nv_host_stop, }; static struct ata_port_operations nv133_port_ops = { @@ -512,7 +552,8 @@ static struct ata_port_operations nv133_port_ops = { .thaw = ata_bmdma_thaw, .error_handler = nv_error_handler, .post_internal_cmd = ata_bmdma_post_internal_cmd, - .cable_detect = nv_cable_detect, + .cable_detect = ata_cable_ignore, + .mode_filter = nv_mode_filter, .bmdma_setup = ata_bmdma_setup, .bmdma_start = ata_bmdma_start, @@ -529,6 +570,7 @@ static struct ata_port_operations nv133_port_ops = { .irq_on = ata_irq_on, .port_start = ata_sff_port_start, + .host_stop = nv_host_stop, }; static int amd_init_one(struct pci_dev *pdev, const struct pci_device_id *id) @@ -615,7 +657,8 @@ static int amd_init_one(struct pci_dev *pdev, const struct pci_device_id *id) .port_ops = &amd100_port_ops } }; - const struct ata_port_info *ppi[] = { NULL, NULL }; + struct ata_port_info pi; + const struct ata_port_info *ppi[] = { &pi, NULL }; static int printed_version; int type = id->driver_data; u8 fifo; @@ -629,6 +672,19 @@ static int amd_init_one(struct pci_dev *pdev, const struct pci_device_id *id) if (type == 1 && pdev->revision > 0x7) type = 2; + /* Serenade ? */ + if (type == 5 && pdev->subsystem_vendor == PCI_VENDOR_ID_AMD && + pdev->subsystem_device == PCI_DEVICE_ID_AMD_SERENADE) + type = 6; /* UDMA 100 only */ + + /* + * Okay, type is determined now. Apply type-specific workarounds. + */ + pi = info[type]; + + if (type < 3) + ata_pci_clear_simplex(pdev); + /* Check for AMD7411 */ if (type == 3) /* FIFO is broken */ @@ -636,16 +692,17 @@ static int amd_init_one(struct pci_dev *pdev, const struct pci_device_id *id) else pci_write_config_byte(pdev, 0x41, fifo | 0xF0); - /* Serenade ? */ - if (type == 5 && pdev->subsystem_vendor == PCI_VENDOR_ID_AMD && - pdev->subsystem_device == PCI_DEVICE_ID_AMD_SERENADE) - type = 6; /* UDMA 100 only */ + /* Cable detection on Nvidia chips doesn't work too well, + * cache BIOS programmed UDMA mode. + */ + if (type == 7 || type == 8) { + u32 udma; - if (type < 3) - ata_pci_clear_simplex(pdev); + pci_read_config_dword(pdev, 0x60, &udma); + pi.private_data = (void *)(unsigned long)udma; + } /* And fire it up */ - ppi[0] = &info[type]; return ata_pci_init_one(pdev, ppi); } -- cgit v1.2.3-59-g8ed1b From e6a73ab1c8e814ac7b0d69f44fde63299b639489 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Thu, 13 Dec 2007 16:01:37 -0800 Subject: drivers/ata/libata-eh.c: fix printk warning drivers/ata/libata-eh.c: In function `ata_port_pbar_desc': drivers/ata/libata-eh.c:215: warning: long long unsigned int format, long unsigned int arg (arg 4) Cc: Jeff Garzik Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- drivers/ata/libata-eh.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index d7d5a5ae04ef..1bc1acf3bbbb 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -231,7 +231,8 @@ void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, if (offset < 0) ata_port_desc(ap, "%s %s%llu@0x%llx", name, type, len, start); else - ata_port_desc(ap, "%s 0x%llx", name, start + offset); + ata_port_desc(ap, "%s 0x%llx", name, + start + (unsigned long long)offset); } #endif /* CONFIG_PCI */ -- cgit v1.2.3-59-g8ed1b From 40f46f17819c2d199f99addc3278ff2eb11f3cd5 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Thu, 13 Dec 2007 16:01:38 -0800 Subject: pata_hpt37x: checkpatch fixes WARNING: line over 80 characters #70: FILE: drivers/ata/pata_hpt37x.c:850: + struct pci_dev *pdev_0 = pci_get_slot(pdev->bus, pdev->devfn - 1); ERROR: else should follow close brace '}' #78: FILE: drivers/ata/pata_hpt37x.c:858: + } + else total: 1 errors, 1 warnings, 100 lines checked Your patch has style problems, please review. If any of these errors are false positives report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- drivers/ata/pata_hpt37x.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c index c79f066c2bc9..68eb34929cec 100644 --- a/drivers/ata/pata_hpt37x.c +++ b/drivers/ata/pata_hpt37x.c @@ -847,15 +847,16 @@ static u32 hpt374_read_freq(struct pci_dev *pdev) u32 freq; unsigned long io_base = pci_resource_start(pdev, 4); if (PCI_FUNC(pdev->devfn) & 1) { - struct pci_dev *pdev_0 = pci_get_slot(pdev->bus, pdev->devfn - 1); + struct pci_dev *pdev_0; + + pdev_0 = pci_get_slot(pdev->bus, pdev->devfn - 1); /* Someone hot plugged the controller on us ? */ if (pdev_0 == NULL) return 0; io_base = pci_resource_start(pdev_0, 4); freq = inl(io_base + 0x90); pci_dev_put(pdev_0); - } - else + } else freq = inl(io_base + 0x90); return freq; } -- cgit v1.2.3-59-g8ed1b From 1973a023a616b40ba33fd0d38b1055c62c88e73d Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 5 Dec 2007 10:36:13 +0900 Subject: libata: convert NCQ test in ata_qc_issue() to ata_is_ncq() I missed one while converting to ata_is_*() protocol test helpers. Convert it. Pointed out by Jeff Garzik. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index f01c1734b1d0..2b57547bd740 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5990,7 +5990,7 @@ void ata_qc_issue(struct ata_queued_cmd *qc) */ WARN_ON(ap->ops->error_handler && ata_tag_valid(link->active_tag)); - if (prot == ATA_PROT_NCQ) { + if (ata_is_ncq(prot)) { WARN_ON(link->sactive & (1 << qc->tag)); if (!link->sactive) -- cgit v1.2.3-59-g8ed1b From 93f8fecbe72bc3c121f3605dd198ff39ef358522 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 5 Dec 2007 16:43:01 +0900 Subject: libata: make atapi_request_sense() use sg atapi_request_sense() is now the only left user of ata_sg_init_one(). Convert it to use sg interface. Signed-off-by: Tejun Heo Cc: Rusty Russel Signed-off-by: Jeff Garzik --- drivers/ata/libata-scsi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index f802dbce41ae..021cdc4cc260 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2341,7 +2341,9 @@ static void atapi_request_sense(struct ata_queued_cmd *qc) ata_qc_reinit(qc); - ata_sg_init_one(qc, cmd->sense_buffer, sizeof(cmd->sense_buffer)); + /* setup sg table and init transfer direction */ + sg_init_one(&qc->sgent, cmd->sense_buffer, sizeof(cmd->sense_buffer)); + ata_sg_init(qc, &qc->sgent, 1); qc->dma_dir = DMA_FROM_DEVICE; memset(&qc->cdb, 0, qc->dev->cdb_len); -- cgit v1.2.3-59-g8ed1b From 0106372db6dc135f300035ce8e93cddd7283a26a Mon Sep 17 00:00:00 2001 From: Albert Lee Date: Wed, 5 Dec 2007 16:43:02 +0900 Subject: libata: zero xfer length on ATAPI data xfer IRQ is HSM violation Treat zero xfer length as HSM violation. While at it, add unlikely()'s to ATAPI ireason and transfer length checks. tj: Formatted patch and added unlikely()'s. Signed-off-by: Albert Lee Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 2b57547bd740..c9e6bd4d0686 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -5309,12 +5309,15 @@ static void atapi_pio_bytes(struct ata_queued_cmd *qc) bytes = (bc_hi << 8) | bc_lo; /* shall be cleared to zero, indicating xfer of data */ - if (ireason & (1 << 0)) + if (unlikely(ireason & (1 << 0))) goto err_out; /* make sure transfer direction matches expected */ i_write = ((ireason & (1 << 1)) == 0) ? 1 : 0; - if (do_write != i_write) + if (unlikely(do_write != i_write)) + goto err_out; + + if (unlikely(!bytes)) goto err_out; VPRINTK("ata%u: xfering %d bytes\n", ap->print_id, bytes); -- cgit v1.2.3-59-g8ed1b From 0dc36888d4422140f9eaf50f24953ec109f750a3 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 18 Dec 2007 16:34:43 -0500 Subject: libata: rename ATA_PROT_ATAPI_* to ATAPI_PROT_* ATA_PROT_ATAPI_* are ugly and naming schemes between ATA_PROT_* and ATA_PROT_ATAPI_* are inconsistent causing confusion. Rename them to ATAPI_PROT_* and make them consistent with ATA counterpart. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 28 ++++++++++++++-------------- drivers/ata/libata-eh.c | 8 ++++---- drivers/ata/libata-scsi.c | 10 +++++----- drivers/ata/libata-sff.c | 2 +- drivers/ata/pata_pdc202xx_old.c | 5 ++--- drivers/ata/pdc_adma.c | 2 +- drivers/ata/sata_inic162x.c | 2 +- drivers/ata/sata_promise.c | 26 ++++++++++++-------------- drivers/ata/sata_qstor.c | 2 +- drivers/ata/sata_sx4.c | 2 +- drivers/scsi/ipr.c | 6 +++--- drivers/scsi/libsas/sas_ata.c | 2 +- include/linux/ata.h | 12 ++++++------ 13 files changed, 52 insertions(+), 55 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index c9e6bd4d0686..2c9745a74d50 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4678,8 +4678,8 @@ int ata_check_atapi_dma(struct ata_queued_cmd *qc) */ static int atapi_qc_may_overflow(struct ata_queued_cmd *qc) { - if (qc->tf.protocol != ATA_PROT_ATAPI && - qc->tf.protocol != ATA_PROT_ATAPI_DMA) + if (qc->tf.protocol != ATAPI_PROT_PIO && + qc->tf.protocol != ATAPI_PROT_DMA) return 0; if (qc->tf.flags & ATA_TFLAG_WRITE) @@ -5161,13 +5161,13 @@ static void atapi_send_cdb(struct ata_port *ap, struct ata_queued_cmd *qc) ata_altstatus(ap); /* flush */ switch (qc->tf.protocol) { - case ATA_PROT_ATAPI: + case ATAPI_PROT_PIO: ap->hsm_task_state = HSM_ST; break; - case ATA_PROT_ATAPI_NODATA: + case ATAPI_PROT_NODATA: ap->hsm_task_state = HSM_ST_LAST; break; - case ATA_PROT_ATAPI_DMA: + case ATAPI_PROT_DMA: ap->hsm_task_state = HSM_ST_LAST; /* initiate bmdma */ ap->ops->bmdma_start(qc); @@ -5518,7 +5518,7 @@ fsm_start: case HSM_ST: /* complete command or read/write the data register */ - if (qc->tf.protocol == ATA_PROT_ATAPI) { + if (qc->tf.protocol == ATAPI_PROT_PIO) { /* ATAPI PIO protocol */ if ((status & ATA_DRQ) == 0) { /* No more data to transfer or device error. @@ -6073,11 +6073,11 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc) switch (qc->tf.protocol) { case ATA_PROT_PIO: case ATA_PROT_NODATA: - case ATA_PROT_ATAPI: - case ATA_PROT_ATAPI_NODATA: + case ATAPI_PROT_PIO: + case ATAPI_PROT_NODATA: qc->tf.flags |= ATA_TFLAG_POLLING; break; - case ATA_PROT_ATAPI_DMA: + case ATAPI_PROT_DMA: if (qc->dev->flags & ATA_DFLAG_CDB_INTR) /* see ata_dma_blacklisted() */ BUG(); @@ -6141,8 +6141,8 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc) break; - case ATA_PROT_ATAPI: - case ATA_PROT_ATAPI_NODATA: + case ATAPI_PROT_PIO: + case ATAPI_PROT_NODATA: if (qc->tf.flags & ATA_TFLAG_POLLING) ata_qc_set_polling(qc); @@ -6156,7 +6156,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc) ata_port_queue_task(ap, ata_pio_task, qc, 0); break; - case ATA_PROT_ATAPI_DMA: + case ATAPI_PROT_DMA: WARN_ON(qc->tf.flags & ATA_TFLAG_POLLING); ap->ops->tf_load(ap, &qc->tf); /* load tf registers */ @@ -6217,7 +6217,7 @@ inline unsigned int ata_host_intr(struct ata_port *ap, break; case HSM_ST_LAST: if (qc->tf.protocol == ATA_PROT_DMA || - qc->tf.protocol == ATA_PROT_ATAPI_DMA) { + qc->tf.protocol == ATAPI_PROT_DMA) { /* check status of DMA engine */ host_stat = ap->ops->bmdma_status(ap); VPRINTK("ata%u: host_stat 0x%X\n", @@ -6259,7 +6259,7 @@ inline unsigned int ata_host_intr(struct ata_port *ap, ata_hsm_move(ap, qc, status, 0); if (unlikely(qc->err_mask) && (qc->tf.protocol == ATA_PROT_DMA || - qc->tf.protocol == ATA_PROT_ATAPI_DMA)) + qc->tf.protocol == ATAPI_PROT_DMA)) ata_ehi_push_desc(ehi, "BMDMA stat 0x%x", host_stat); return 1; /* irq handled */ diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 1bc1acf3bbbb..419552603a16 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -1299,10 +1299,10 @@ static unsigned int atapi_eh_request_sense(struct ata_queued_cmd *qc) /* is it pointless to prefer PIO for "safety reasons"? */ if (ap->flags & ATA_FLAG_PIO_DMA) { - tf.protocol = ATA_PROT_ATAPI_DMA; + tf.protocol = ATAPI_PROT_DMA; tf.feature |= ATAPI_PKT_DMA; } else { - tf.protocol = ATA_PROT_ATAPI; + tf.protocol = ATAPI_PROT_PIO; tf.lbam = SCSI_SENSE_BUFFERSIZE; tf.lbah = 0; } @@ -1979,8 +1979,8 @@ static void ata_eh_link_report(struct ata_link *link) [ATA_PROT_PIO] = "pio", [ATA_PROT_DMA] = "dma", [ATA_PROT_NCQ] = "ncq", - [ATA_PROT_ATAPI] = "pio", - [ATA_PROT_ATAPI_DMA] = "dma", + [ATAPI_PROT_PIO] = "pio", + [ATAPI_PROT_DMA] = "dma", }; snprintf(data_buf, sizeof(data_buf), " %s %u %s", diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 021cdc4cc260..5fd780e509d4 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2354,10 +2354,10 @@ static void atapi_request_sense(struct ata_queued_cmd *qc) qc->tf.command = ATA_CMD_PACKET; if (ata_pio_use_silly(ap)) { - qc->tf.protocol = ATA_PROT_ATAPI_DMA; + qc->tf.protocol = ATAPI_PROT_DMA; qc->tf.feature |= ATAPI_PKT_DMA; } else { - qc->tf.protocol = ATA_PROT_ATAPI; + qc->tf.protocol = ATAPI_PROT_PIO; qc->tf.lbam = SCSI_SENSE_BUFFERSIZE; qc->tf.lbah = 0; } @@ -2528,12 +2528,12 @@ static unsigned int atapi_xlat(struct ata_queued_cmd *qc) if (using_pio || nodata) { /* no data, or PIO data xfer */ if (nodata) - qc->tf.protocol = ATA_PROT_ATAPI_NODATA; + qc->tf.protocol = ATAPI_PROT_NODATA; else - qc->tf.protocol = ATA_PROT_ATAPI; + qc->tf.protocol = ATAPI_PROT_PIO; } else { /* DMA data xfer */ - qc->tf.protocol = ATA_PROT_ATAPI_DMA; + qc->tf.protocol = ATAPI_PROT_DMA; qc->tf.feature |= ATAPI_PKT_DMA; if (atapi_dmadir && (scmd->sc_data_direction != DMA_TO_DEVICE)) diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index fd5fe4e7e75a..edeb4bea586c 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -417,7 +417,7 @@ void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset, ap->hsm_task_state = HSM_ST_IDLE; if (qc && (qc->tf.protocol == ATA_PROT_DMA || - qc->tf.protocol == ATA_PROT_ATAPI_DMA)) { + qc->tf.protocol == ATAPI_PROT_DMA)) { u8 host_stat; host_stat = ap->ops->bmdma_status(ap); diff --git a/drivers/ata/pata_pdc202xx_old.c b/drivers/ata/pata_pdc202xx_old.c index 6c9689b59b06..3ed866723e0c 100644 --- a/drivers/ata/pata_pdc202xx_old.c +++ b/drivers/ata/pata_pdc202xx_old.c @@ -168,8 +168,7 @@ static void pdc2026x_bmdma_start(struct ata_queued_cmd *qc) pdc202xx_set_dmamode(ap, qc->dev); /* Cases the state machine will not complete correctly without help */ - if ((tf->flags & ATA_TFLAG_LBA48) || tf->protocol == ATA_PROT_ATAPI_DMA) - { + if ((tf->flags & ATA_TFLAG_LBA48) || tf->protocol == ATAPI_PROT_DMA) { len = qc->nbytes / 2; if (tf->flags & ATA_TFLAG_WRITE) @@ -208,7 +207,7 @@ static void pdc2026x_bmdma_stop(struct ata_queued_cmd *qc) void __iomem *atapi_reg = master + 0x20 + (4 * ap->port_no); /* Cases the state machine will not complete correctly */ - if (tf->protocol == ATA_PROT_ATAPI_DMA || ( tf->flags & ATA_TFLAG_LBA48)) { + if (tf->protocol == ATAPI_PROT_DMA || (tf->flags & ATA_TFLAG_LBA48)) { iowrite32(0, atapi_reg); iowrite8(ioread8(clock) & ~sel66, clock); } diff --git a/drivers/ata/pdc_adma.c b/drivers/ata/pdc_adma.c index bd4c2a3c88d7..459cb7bb7d7f 100644 --- a/drivers/ata/pdc_adma.c +++ b/drivers/ata/pdc_adma.c @@ -455,7 +455,7 @@ static unsigned int adma_qc_issue(struct ata_queued_cmd *qc) adma_packet_start(qc); return 0; - case ATA_PROT_ATAPI_DMA: + case ATAPI_PROT_DMA: BUG(); break; diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c index 323c087e8cc1..96e614a1c169 100644 --- a/drivers/ata/sata_inic162x.c +++ b/drivers/ata/sata_inic162x.c @@ -585,7 +585,7 @@ static struct ata_port_operations inic_port_ops = { }; static struct ata_port_info inic_port_info = { - /* For some reason, ATA_PROT_ATAPI is broken on this + /* For some reason, ATAPI_PROT_PIO is broken on this * controller, and no, PIO_POLLING does't fix it. It somehow * manages to report the wrong ireason and ignoring ireason * results in machine lock up. Tell libata to always prefer diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c index 9638faaa8111..01738d736d44 100644 --- a/drivers/ata/sata_promise.c +++ b/drivers/ata/sata_promise.c @@ -456,13 +456,13 @@ static void pdc_atapi_pkt(struct ata_queued_cmd *qc) * and seq id (byte 2) */ switch (qc->tf.protocol) { - case ATA_PROT_ATAPI_DMA: + case ATAPI_PROT_DMA: if (!(qc->tf.flags & ATA_TFLAG_WRITE)) buf32[0] = cpu_to_le32(PDC_PKT_READ); else buf32[0] = 0; break; - case ATA_PROT_ATAPI_NODATA: + case ATAPI_PROT_NODATA: buf32[0] = cpu_to_le32(PDC_PKT_NODATA); break; default: @@ -489,7 +489,7 @@ static void pdc_atapi_pkt(struct ata_queued_cmd *qc) buf[19] = qc->tf.lbal; /* set feature and byte counter registers */ - if (qc->tf.protocol != ATA_PROT_ATAPI_DMA) + if (qc->tf.protocol != ATAPI_PROT_DMA) feature = PDC_FEATURE_ATAPI_PIO; else feature = PDC_FEATURE_ATAPI_DMA; @@ -619,14 +619,14 @@ static void pdc_qc_prep(struct ata_queued_cmd *qc) pdc_pkt_footer(&qc->tf, pp->pkt, i); break; - case ATA_PROT_ATAPI: + case ATAPI_PROT_PIO: pdc_fill_sg(qc); break; - case ATA_PROT_ATAPI_DMA: + case ATAPI_PROT_DMA: pdc_fill_sg(qc); /*FALLTHROUGH*/ - case ATA_PROT_ATAPI_NODATA: + case ATAPI_PROT_NODATA: pdc_atapi_pkt(qc); break; @@ -746,8 +746,8 @@ static inline unsigned int pdc_host_intr(struct ata_port *ap, switch (qc->tf.protocol) { case ATA_PROT_DMA: case ATA_PROT_NODATA: - case ATA_PROT_ATAPI_DMA: - case ATA_PROT_ATAPI_NODATA: + case ATAPI_PROT_DMA: + case ATAPI_PROT_NODATA: qc->err_mask |= ac_err_mask(ata_wait_idle(ap)); ata_qc_complete(qc); handled = 1; @@ -892,7 +892,7 @@ static inline void pdc_packet_start(struct ata_queued_cmd *qc) static unsigned int pdc_qc_issue_prot(struct ata_queued_cmd *qc) { switch (qc->tf.protocol) { - case ATA_PROT_ATAPI_NODATA: + case ATAPI_PROT_NODATA: if (qc->dev->flags & ATA_DFLAG_CDB_INTR) break; /*FALLTHROUGH*/ @@ -900,7 +900,7 @@ static unsigned int pdc_qc_issue_prot(struct ata_queued_cmd *qc) if (qc->tf.flags & ATA_TFLAG_POLLING) break; /*FALLTHROUGH*/ - case ATA_PROT_ATAPI_DMA: + case ATAPI_PROT_DMA: case ATA_PROT_DMA: pdc_packet_start(qc); return 0; @@ -914,16 +914,14 @@ static unsigned int pdc_qc_issue_prot(struct ata_queued_cmd *qc) static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf) { - WARN_ON(tf->protocol == ATA_PROT_DMA || - tf->protocol == ATA_PROT_ATAPI_DMA); + WARN_ON(tf->protocol == ATA_PROT_DMA || tf->protocol == ATAPI_PROT_DMA); ata_tf_load(ap, tf); } static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf) { - WARN_ON(tf->protocol == ATA_PROT_DMA || - tf->protocol == ATA_PROT_ATAPI_DMA); + WARN_ON(tf->protocol == ATA_PROT_DMA || tf->protocol == ATAPI_PROT_DMA); ata_exec_command(ap, tf); } diff --git a/drivers/ata/sata_qstor.c b/drivers/ata/sata_qstor.c index c68b241805fd..4e5f07bdd069 100644 --- a/drivers/ata/sata_qstor.c +++ b/drivers/ata/sata_qstor.c @@ -376,7 +376,7 @@ static unsigned int qs_qc_issue(struct ata_queued_cmd *qc) qs_packet_start(qc); return 0; - case ATA_PROT_ATAPI_DMA: + case ATAPI_PROT_DMA: BUG(); break; diff --git a/drivers/ata/sata_sx4.c b/drivers/ata/sata_sx4.c index 4d857185f33b..3de0c27caf53 100644 --- a/drivers/ata/sata_sx4.c +++ b/drivers/ata/sata_sx4.c @@ -700,7 +700,7 @@ static unsigned int pdc20621_qc_issue_prot(struct ata_queued_cmd *qc) pdc20621_packet_start(qc); return 0; - case ATA_PROT_ATAPI_DMA: + case ATAPI_PROT_DMA: BUG(); break; diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 0841df01bc19..3e78bc2d9170 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -5222,12 +5222,12 @@ static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc) regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; break; - case ATA_PROT_ATAPI: - case ATA_PROT_ATAPI_NODATA: + case ATAPI_PROT_PIO: + case ATAPI_PROT_NODATA: regs->flags |= IPR_ATA_FLAG_PACKET_CMD; break; - case ATA_PROT_ATAPI_DMA: + case ATAPI_PROT_DMA: regs->flags |= IPR_ATA_FLAG_PACKET_CMD; regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA; break; diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index 831294de1d8d..f78d0605747d 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -200,7 +200,7 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc) case ATA_PROT_NCQ: task->ata_task.use_ncq = 1; /* fall through */ - case ATA_PROT_ATAPI_DMA: + case ATAPI_PROT_DMA: case ATA_PROT_DMA: task->ata_task.dma_xfer = 1; break; diff --git a/include/linux/ata.h b/include/linux/ata.h index c17e9404c88d..bc55471a4b2c 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -341,9 +341,9 @@ enum ata_tf_protocols { ATA_PROT_PIO, /* PIO data xfer */ ATA_PROT_DMA, /* DMA */ ATA_PROT_NCQ, /* NCQ */ - ATA_PROT_ATAPI, /* packet command, PIO data xfer*/ - ATA_PROT_ATAPI_NODATA, /* packet command, no data */ - ATA_PROT_ATAPI_DMA, /* packet command with special DMA sauce */ + ATAPI_PROT_NODATA, /* packet command, no data */ + ATAPI_PROT_PIO, /* packet command, PIO data xfer*/ + ATAPI_PROT_DMA, /* packet command with special DMA sauce */ }; enum ata_ioctls { @@ -395,11 +395,11 @@ static inline unsigned int ata_prot_flags(u8 prot) return ATA_PROT_FLAG_DMA; case ATA_PROT_NCQ: return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ; - case ATA_PROT_ATAPI_NODATA: + case ATAPI_PROT_NODATA: return ATA_PROT_FLAG_ATAPI; - case ATA_PROT_ATAPI: + case ATAPI_PROT_PIO: return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; - case ATA_PROT_ATAPI_DMA: + case ATAPI_PROT_DMA: return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA; } return 0; -- cgit v1.2.3-59-g8ed1b From 55dba3120fbcbea6800f9a18503d25f73212a347 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 5 Dec 2007 16:43:07 +0900 Subject: libata: update ->data_xfer hook for ATAPI Depending on how many bytes are transferred as a unit, PIO data transfer may consume more bytes than requested. Knowing how much data is consumed is necessary to determine how much is left for draining. This patch update ->data_xfer such that it returns the number of consumed bytes. While at it, it also makes the following changes. * s/adev/dev/ * use READ/WRITE constants for rw indication * misc clean ups Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 46 +++++++++++++++++++++++++++++--------------- drivers/ata/pata_bf54x.c | 28 ++++++++++++++------------- drivers/ata/pata_ixp4xx_cf.c | 26 +++++++++++++------------ drivers/ata/pata_legacy.c | 36 ++++++++++++++++++---------------- drivers/ata/pata_qdi.c | 30 ++++++++++++++++------------- drivers/ata/pata_scc.c | 30 +++++++++++++++-------------- drivers/ata/pata_winbond.c | 28 +++++++++++++++------------ include/linux/libata.h | 11 ++++++----- 8 files changed, 133 insertions(+), 102 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 2c9745a74d50..39cedd949ed4 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4994,7 +4994,7 @@ void swap_buf_le16(u16 *buf, unsigned int buf_words) /** * ata_data_xfer - Transfer data by PIO - * @adev: device to target + * @dev: device to target * @buf: data buffer * @buflen: buffer length * @write_data: read/write @@ -5003,37 +5003,44 @@ void swap_buf_le16(u16 *buf, unsigned int buf_words) * * LOCKING: * Inherited from caller. + * + * RETURNS: + * Bytes consumed. */ -void ata_data_xfer(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data) +unsigned int ata_data_xfer(struct ata_device *dev, unsigned char *buf, + unsigned int buflen, int rw) { - struct ata_port *ap = adev->link->ap; + struct ata_port *ap = dev->link->ap; + void __iomem *data_addr = ap->ioaddr.data_addr; unsigned int words = buflen >> 1; /* Transfer multiple of 2 bytes */ - if (write_data) - iowrite16_rep(ap->ioaddr.data_addr, buf, words); + if (rw == READ) + ioread16_rep(data_addr, buf, words); else - ioread16_rep(ap->ioaddr.data_addr, buf, words); + iowrite16_rep(data_addr, buf, words); /* Transfer trailing 1 byte, if any. */ if (unlikely(buflen & 0x01)) { u16 align_buf[1] = { 0 }; unsigned char *trailing_buf = buf + buflen - 1; - if (write_data) { - memcpy(align_buf, trailing_buf, 1); - iowrite16(le16_to_cpu(align_buf[0]), ap->ioaddr.data_addr); - } else { - align_buf[0] = cpu_to_le16(ioread16(ap->ioaddr.data_addr)); + if (rw == READ) { + align_buf[0] = cpu_to_le16(ioread16(data_addr)); memcpy(trailing_buf, align_buf, 1); + } else { + memcpy(align_buf, trailing_buf, 1); + iowrite16(le16_to_cpu(align_buf[0]), data_addr); } + words++; } + + return words << 1; } /** * ata_data_xfer_noirq - Transfer data by PIO - * @adev: device to target + * @dev: device to target * @buf: data buffer * @buflen: buffer length * @write_data: read/write @@ -5043,14 +5050,21 @@ void ata_data_xfer(struct ata_device *adev, unsigned char *buf, * * LOCKING: * Inherited from caller. + * + * RETURNS: + * Bytes consumed. */ -void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data) +unsigned int ata_data_xfer_noirq(struct ata_device *dev, unsigned char *buf, + unsigned int buflen, int rw) { unsigned long flags; + unsigned int consumed; + local_irq_save(flags); - ata_data_xfer(adev, buf, buflen, write_data); + consumed = ata_data_xfer(dev, buf, buflen, rw); local_irq_restore(flags); + + return consumed; } diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c index 7842cc487359..41cd921082ba 100644 --- a/drivers/ata/pata_bf54x.c +++ b/drivers/ata/pata_bf54x.c @@ -1167,34 +1167,36 @@ static unsigned char bfin_bmdma_status(struct ata_port *ap) * Note: Original code is ata_data_xfer(). */ -static void bfin_data_xfer(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data) +static unsigned int bfin_data_xfer(struct ata_device *dev, unsigned char *buf, + unsigned int buflen, int rw) { - struct ata_port *ap = adev->link->ap; - unsigned int words = buflen >> 1; - unsigned short *buf16 = (u16 *) buf; + struct ata_port *ap = dev->link->ap; void __iomem *base = (void __iomem *)ap->ioaddr.ctl_addr; + unsigned int words = buflen >> 1; + unsigned short *buf16 = (u16 *)buf; /* Transfer multiple of 2 bytes */ - if (write_data) { - write_atapi_data(base, words, buf16); - } else { + if (rw == READ) read_atapi_data(base, words, buf16); - } + else + write_atapi_data(base, words, buf16); /* Transfer trailing 1 byte, if any. */ if (unlikely(buflen & 0x01)) { unsigned short align_buf[1] = { 0 }; unsigned char *trailing_buf = buf + buflen - 1; - if (write_data) { - memcpy(align_buf, trailing_buf, 1); - write_atapi_data(base, 1, align_buf); - } else { + if (rw == READ) { read_atapi_data(base, 1, align_buf); memcpy(trailing_buf, align_buf, 1); + } else { + memcpy(align_buf, trailing_buf, 1); + write_atapi_data(base, 1, align_buf); } + words++; } + + return words << 1; } /** diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c index 120b5bfa7ce6..030878fedeb5 100644 --- a/drivers/ata/pata_ixp4xx_cf.c +++ b/drivers/ata/pata_ixp4xx_cf.c @@ -42,13 +42,13 @@ static int ixp4xx_set_mode(struct ata_link *link, struct ata_device **error) return 0; } -static void ixp4xx_mmio_data_xfer(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data) +static unsigned int ixp4xx_mmio_data_xfer(struct ata_device *dev, + unsigned char *buf, unsigned int buflen, int rw) { unsigned int i; unsigned int words = buflen >> 1; u16 *buf16 = (u16 *) buf; - struct ata_port *ap = adev->link->ap; + struct ata_port *ap = dev->link->ap; void __iomem *mmio = ap->ioaddr.data_addr; struct ixp4xx_pata_data *data = ap->host->dev->platform_data; @@ -59,30 +59,32 @@ static void ixp4xx_mmio_data_xfer(struct ata_device *adev, unsigned char *buf, udelay(100); /* Transfer multiple of 2 bytes */ - if (write_data) { - for (i = 0; i < words; i++) - writew(buf16[i], mmio); - } else { + if (rw == READ) for (i = 0; i < words; i++) buf16[i] = readw(mmio); - } + else + for (i = 0; i < words; i++) + writew(buf16[i], mmio); /* Transfer trailing 1 byte, if any. */ if (unlikely(buflen & 0x01)) { u16 align_buf[1] = { 0 }; unsigned char *trailing_buf = buf + buflen - 1; - if (write_data) { - memcpy(align_buf, trailing_buf, 1); - writew(align_buf[0], mmio); - } else { + if (rw == READ) { align_buf[0] = readw(mmio); memcpy(trailing_buf, align_buf, 1); + } else { + memcpy(align_buf, trailing_buf, 1); + writew(align_buf[0], mmio); } + words++; } udelay(100); *data->cs0_cfg |= 0x01; + + return words << 1; } static struct scsi_host_template ixp4xx_sht = { diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c index 17159b5e1e43..dae85aa12e32 100644 --- a/drivers/ata/pata_legacy.c +++ b/drivers/ata/pata_legacy.c @@ -249,13 +249,14 @@ static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev) } -static void pdc_data_xfer_vlb(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data) +static unsigned int pdc_data_xfer_vlb(struct ata_device *dev, + unsigned char *buf, unsigned int buflen, int rw) { - struct ata_port *ap = adev->link->ap; - int slop = buflen & 3; - unsigned long flags; - if (ata_id_has_dword_io(adev->id)) { + struct ata_port *ap = dev->link->ap; + int slop = buflen & 3; + unsigned long flags; + local_irq_save(flags); /* Perform the 32bit I/O synchronization sequence */ @@ -264,26 +265,27 @@ static void pdc_data_xfer_vlb(struct ata_device *adev, unsigned char *buf, unsig ioread8(ap->ioaddr.nsect_addr); /* Now the data */ - - if (write_data) - iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); - else + if (rw == READ) ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); + else + iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); if (unlikely(slop)) { - __le32 pad = 0; - if (write_data) { - memcpy(&pad, buf + buflen - slop, slop); - iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); - } else { + u32 pad; + if (rw == READ) { pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr)); memcpy(buf + buflen - slop, &pad, slop); + } else { + memcpy(&pad, buf + buflen - slop, slop); + iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); } + buflen += 4 - slop; } local_irq_restore(flags); - } - else - ata_data_xfer_noirq(adev, buf, buflen, write_data); + } else + buflen = ata_data_xfer_noirq(dev, buf, buflen, rw); + + return buflen; } static struct ata_port_operations pdc20230_port_ops = { diff --git a/drivers/ata/pata_qdi.c b/drivers/ata/pata_qdi.c index a4c0e502cb42..9f308ed76cc8 100644 --- a/drivers/ata/pata_qdi.c +++ b/drivers/ata/pata_qdi.c @@ -124,29 +124,33 @@ static unsigned int qdi_qc_issue_prot(struct ata_queued_cmd *qc) return ata_qc_issue_prot(qc); } -static void qdi_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data) +static unsigned int qdi_data_xfer(struct ata_device *dev, unsigned char *buf, + unsigned int buflen, int rw) { - struct ata_port *ap = adev->link->ap; - int slop = buflen & 3; + if (ata_id_has_dword_io(dev->id)) { + struct ata_port *ap = dev->link->ap; + int slop = buflen & 3; - if (ata_id_has_dword_io(adev->id)) { - if (write_data) - iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); - else + if (rw == READ) ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); + else + iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); if (unlikely(slop)) { - __le32 pad = 0; - if (write_data) { - memcpy(&pad, buf + buflen - slop, slop); - iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); - } else { + u32 pad; + if (rw == READ) { pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr)); memcpy(buf + buflen - slop, &pad, slop); + } else { + memcpy(&pad, buf + buflen - slop, slop); + iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); } + buflen += 4 - slop; } } else - ata_data_xfer(adev, buf, buflen, write_data); + buflen = ata_data_xfer(dev, buf, buflen, rw); + + return buflen; } static struct scsi_host_template qdi_sht = { diff --git a/drivers/ata/pata_scc.c b/drivers/ata/pata_scc.c index ea2ef9fc15be..55055b27524c 100644 --- a/drivers/ata/pata_scc.c +++ b/drivers/ata/pata_scc.c @@ -768,45 +768,47 @@ static u8 scc_bmdma_status (struct ata_port *ap) /** * scc_data_xfer - Transfer data by PIO - * @adev: device for this I/O + * @dev: device for this I/O * @buf: data buffer * @buflen: buffer length - * @write_data: read/write + * @rw: read/write * * Note: Original code is ata_data_xfer(). */ -static void scc_data_xfer (struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data) +static unsigned int scc_data_xfer (struct ata_device *dev, unsigned char *buf, + unsigned int buflen, int rw) { - struct ata_port *ap = adev->link->ap; + struct ata_port *ap = dev->link->ap; unsigned int words = buflen >> 1; unsigned int i; u16 *buf16 = (u16 *) buf; void __iomem *mmio = ap->ioaddr.data_addr; /* Transfer multiple of 2 bytes */ - if (write_data) { - for (i = 0; i < words; i++) - out_be32(mmio, cpu_to_le16(buf16[i])); - } else { + if (rw == READ) for (i = 0; i < words; i++) buf16[i] = le16_to_cpu(in_be32(mmio)); - } + else + for (i = 0; i < words; i++) + out_be32(mmio, cpu_to_le16(buf16[i])); /* Transfer trailing 1 byte, if any. */ if (unlikely(buflen & 0x01)) { u16 align_buf[1] = { 0 }; unsigned char *trailing_buf = buf + buflen - 1; - if (write_data) { - memcpy(align_buf, trailing_buf, 1); - out_be32(mmio, cpu_to_le16(align_buf[0])); - } else { + if (rw == READ) { align_buf[0] = le16_to_cpu(in_be32(mmio)); memcpy(trailing_buf, align_buf, 1); + } else { + memcpy(align_buf, trailing_buf, 1); + out_be32(mmio, cpu_to_le16(align_buf[0])); } + words++; } + + return words << 1; } /** diff --git a/drivers/ata/pata_winbond.c b/drivers/ata/pata_winbond.c index 7116a9e7a8b2..7312e9182d69 100644 --- a/drivers/ata/pata_winbond.c +++ b/drivers/ata/pata_winbond.c @@ -92,29 +92,33 @@ static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev) } -static void winbond_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int write_data) +static void winbond_data_xfer(struct ata_device *dev, unsigned char *buf, + unsigned int buflen, int rw) { - struct ata_port *ap = adev->link->ap; + struct ata_port *ap = dev->link->ap; int slop = buflen & 3; - if (ata_id_has_dword_io(adev->id)) { - if (write_data) - iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); - else + if (ata_id_has_dword_io(dev->id)) { + if (rw == READ) ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); + else + iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); if (unlikely(slop)) { - __le32 pad = 0; - if (write_data) { - memcpy(&pad, buf + buflen - slop, slop); - iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); - } else { + u32 pad; + if (rw == READ) { pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr)); memcpy(buf + buflen - slop, &pad, slop); + } else { + memcpy(&pad, buf + buflen - slop, slop); + iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); } + buflen += 4 - slop; } } else - ata_data_xfer(adev, buf, buflen, write_data); + buflen = ata_data_xfer(dev, buf, buflen, rw); + + return buflen; } static struct scsi_host_template winbond_sht = { diff --git a/include/linux/libata.h b/include/linux/libata.h index 03afcd63202d..7fa96cb4f6db 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -701,7 +701,8 @@ struct ata_port_operations { void (*bmdma_setup) (struct ata_queued_cmd *qc); void (*bmdma_start) (struct ata_queued_cmd *qc); - void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int); + unsigned int (*data_xfer) (struct ata_device *dev, unsigned char *buf, + unsigned int buflen, int rw); int (*qc_defer) (struct ata_queued_cmd *qc); void (*qc_prep) (struct ata_queued_cmd *qc); @@ -881,10 +882,10 @@ extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf) extern int ata_port_start(struct ata_port *ap); extern int ata_sff_port_start(struct ata_port *ap); extern irqreturn_t ata_interrupt(int irq, void *dev_instance); -extern void ata_data_xfer(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data); -extern void ata_data_xfer_noirq(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data); +extern unsigned int ata_data_xfer(struct ata_device *dev, + unsigned char *buf, unsigned int buflen, int rw); +extern unsigned int ata_data_xfer_noirq(struct ata_device *dev, + unsigned char *buf, unsigned int buflen, int rw); extern int ata_std_qc_defer(struct ata_queued_cmd *qc); extern void ata_dumb_qc_prep(struct ata_queued_cmd *qc); extern void ata_qc_prep(struct ata_queued_cmd *qc); -- cgit v1.2.3-59-g8ed1b From 001102d7859be0e7f7b9f2d62b841f2c0f9c2640 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 5 Dec 2007 16:43:09 +0900 Subject: libata: kill non-sg DMA interface With atapi_request_sense() converted to use sg, there's no user of non-sg interface. Kill non-sg interface. * ATA_QCFLAG_SINGLE and ATA_QCFLAG_SG are removed. ATA_QCFLAG_DMAMAP is used instead. (this way no LLD change is necessary) * qc->buf_virt is removed. * ata_sg_init_one() and ata_sg_setup_one() are removed. Signed-off-by: Tejun Heo Cc: Rusty Russel Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 148 +++++----------------------------------------- include/linux/libata.h | 7 +-- 2 files changed, 16 insertions(+), 139 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 39cedd949ed4..76360f0ca20d 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4478,9 +4478,6 @@ void ata_sg_clean(struct ata_queued_cmd *qc) WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP)); WARN_ON(sg == NULL); - if (qc->flags & ATA_QCFLAG_SINGLE) - WARN_ON(qc->n_elem > 1); - VPRINTK("unmapping %u sg elements\n", qc->n_elem); /* if we padded the buffer out to 32-bit bound, and data @@ -4490,27 +4487,15 @@ void ata_sg_clean(struct ata_queued_cmd *qc) if (qc->pad_len && !(qc->tf.flags & ATA_TFLAG_WRITE)) pad_buf = ap->pad + (qc->tag * ATA_DMA_PAD_SZ); - if (qc->flags & ATA_QCFLAG_SG) { - if (qc->n_elem) - dma_unmap_sg(ap->dev, sg, qc->n_elem, dir); - /* restore last sg */ - sg_last(sg, qc->orig_n_elem)->length += qc->pad_len; - if (pad_buf) { - struct scatterlist *psg = &qc->pad_sgent; - void *addr = kmap_atomic(sg_page(psg), KM_IRQ0); - memcpy(addr + psg->offset, pad_buf, qc->pad_len); - kunmap_atomic(addr, KM_IRQ0); - } - } else { - if (qc->n_elem) - dma_unmap_single(ap->dev, - sg_dma_address(&sg[0]), sg_dma_len(&sg[0]), - dir); - /* restore sg */ - sg->length += qc->pad_len; - if (pad_buf) - memcpy(qc->buf_virt + sg->length - qc->pad_len, - pad_buf, qc->pad_len); + if (qc->n_elem) + dma_unmap_sg(ap->dev, sg, qc->n_elem, dir); + /* restore last sg */ + sg_last(sg, qc->orig_n_elem)->length += qc->pad_len; + if (pad_buf) { + struct scatterlist *psg = &qc->pad_sgent; + void *addr = kmap_atomic(sg_page(psg), KM_IRQ0); + memcpy(addr + psg->offset, pad_buf, qc->pad_len); + kunmap_atomic(addr, KM_IRQ0); } qc->flags &= ~ATA_QCFLAG_DMAMAP; @@ -4764,33 +4749,6 @@ void ata_dumb_qc_prep(struct ata_queued_cmd *qc) void ata_noop_qc_prep(struct ata_queued_cmd *qc) { } -/** - * ata_sg_init_one - Associate command with memory buffer - * @qc: Command to be associated - * @buf: Memory buffer - * @buflen: Length of memory buffer, in bytes. - * - * Initialize the data-related elements of queued_cmd @qc - * to point to a single memory buffer, @buf of byte length @buflen. - * - * LOCKING: - * spin_lock_irqsave(host lock) - */ - -void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen) -{ - qc->flags |= ATA_QCFLAG_SINGLE; - - qc->__sg = &qc->sgent; - qc->n_elem = 1; - qc->orig_n_elem = 1; - qc->buf_virt = buf; - qc->nbytes = buflen; - qc->cursg = qc->__sg; - - sg_init_one(&qc->sgent, buf, buflen); -} - /** * ata_sg_init - Associate command with scatter-gather table. * @qc: Command to be associated @@ -4808,82 +4766,13 @@ void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen) void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, unsigned int n_elem) { - qc->flags |= ATA_QCFLAG_SG; + qc->flags |= ATA_QCFLAG_DMAMAP; qc->__sg = sg; qc->n_elem = n_elem; qc->orig_n_elem = n_elem; qc->cursg = qc->__sg; } -/** - * ata_sg_setup_one - DMA-map the memory buffer associated with a command. - * @qc: Command with memory buffer to be mapped. - * - * DMA-map the memory buffer associated with queued_cmd @qc. - * - * LOCKING: - * spin_lock_irqsave(host lock) - * - * RETURNS: - * Zero on success, negative on error. - */ - -static int ata_sg_setup_one(struct ata_queued_cmd *qc) -{ - struct ata_port *ap = qc->ap; - int dir = qc->dma_dir; - struct scatterlist *sg = qc->__sg; - dma_addr_t dma_address; - int trim_sg = 0; - - /* we must lengthen transfers to end on a 32-bit boundary */ - qc->pad_len = sg->length & 3; - if (qc->pad_len) { - void *pad_buf = ap->pad + (qc->tag * ATA_DMA_PAD_SZ); - struct scatterlist *psg = &qc->pad_sgent; - - WARN_ON(qc->dev->class != ATA_DEV_ATAPI); - - memset(pad_buf, 0, ATA_DMA_PAD_SZ); - - if (qc->tf.flags & ATA_TFLAG_WRITE) - memcpy(pad_buf, qc->buf_virt + sg->length - qc->pad_len, - qc->pad_len); - - sg_dma_address(psg) = ap->pad_dma + (qc->tag * ATA_DMA_PAD_SZ); - sg_dma_len(psg) = ATA_DMA_PAD_SZ; - /* trim sg */ - sg->length -= qc->pad_len; - if (sg->length == 0) - trim_sg = 1; - - DPRINTK("padding done, sg->length=%u pad_len=%u\n", - sg->length, qc->pad_len); - } - - if (trim_sg) { - qc->n_elem--; - goto skip_map; - } - - dma_address = dma_map_single(ap->dev, qc->buf_virt, - sg->length, dir); - if (dma_mapping_error(dma_address)) { - /* restore sg */ - sg->length += qc->pad_len; - return -1; - } - - sg_dma_address(sg) = dma_address; - sg_dma_len(sg) = sg->length; - -skip_map: - DPRINTK("mapped buffer of %d bytes for %s\n", sg_dma_len(sg), - qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read"); - - return 0; -} - /** * ata_sg_setup - DMA-map the scatter-gather table associated with a command. * @qc: Command with scatter-gather table to be mapped. @@ -4906,7 +4795,7 @@ static int ata_sg_setup(struct ata_queued_cmd *qc) int n_elem, pre_n_elem, dir, trim_sg = 0; VPRINTK("ENTER, ata%u\n", ap->print_id); - WARN_ON(!(qc->flags & ATA_QCFLAG_SG)); + WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP)); /* we must lengthen transfers to end on a 32-bit boundary */ qc->pad_len = lsg->length & 3; @@ -6025,16 +5914,10 @@ void ata_qc_issue(struct ata_queued_cmd *qc) if (ata_is_dma(prot) || (ata_is_pio(prot) && (ap->flags & ATA_FLAG_PIO_DMA))) { - if (qc->flags & ATA_QCFLAG_SG) { - if (ata_sg_setup(qc)) - goto sg_err; - } else if (qc->flags & ATA_QCFLAG_SINGLE) { - if (ata_sg_setup_one(qc)) - goto sg_err; - } - } else { - qc->flags &= ~ATA_QCFLAG_DMAMAP; - } + if (ata_sg_setup(qc)) + goto sg_err; + } else + qc->flags &= ATA_QCFLAG_DMAMAP; /* if device is sleeping, schedule softreset and abort the link */ if (unlikely(qc->dev->flags & ATA_DFLAG_SLEEPING)) { @@ -7612,7 +7495,6 @@ EXPORT_SYMBOL_GPL(ata_host_register); EXPORT_SYMBOL_GPL(ata_host_activate); EXPORT_SYMBOL_GPL(ata_host_detach); EXPORT_SYMBOL_GPL(ata_sg_init); -EXPORT_SYMBOL_GPL(ata_sg_init_one); EXPORT_SYMBOL_GPL(ata_hsm_move); EXPORT_SYMBOL_GPL(ata_qc_complete); EXPORT_SYMBOL_GPL(ata_qc_complete_multiple); diff --git a/include/linux/libata.h b/include/linux/libata.h index 7fa96cb4f6db..acd90ad78417 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -219,9 +219,7 @@ enum { /* struct ata_queued_cmd flags */ ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ - ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */ - ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */ - ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE, + ATA_QCFLAG_DMAMAP = (1 << 1), /* SG table is DMA mapped */ ATA_QCFLAG_IO = (1 << 3), /* standard IO command */ ATA_QCFLAG_RESULT_TF = (1 << 4), /* result TF requested */ ATA_QCFLAG_CLEAR_EXCL = (1 << 5), /* clear excl_link on completion */ @@ -475,7 +473,6 @@ struct ata_queued_cmd { struct scatterlist sgent; struct scatterlist pad_sgent; - void *buf_virt; /* DO NOT iterate over __sg manually, use ata_for_each_sg() */ struct scatterlist *__sg; @@ -891,8 +888,6 @@ extern void ata_dumb_qc_prep(struct ata_queued_cmd *qc); extern void ata_qc_prep(struct ata_queued_cmd *qc); extern void ata_noop_qc_prep(struct ata_queued_cmd *qc); extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc); -extern void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, - unsigned int buflen); extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, unsigned int n_elem); extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); -- cgit v1.2.3-59-g8ed1b From f92a26365a72333f418abe82700c6030d4a1a807 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 5 Dec 2007 16:43:10 +0900 Subject: libata: change ATA_QCFLAG_DMAMAP semantics ATA_QCFLAG_DMAMAP was a bit peculiar in that it got set during qc initialization and cleared if DMA mapping wasn't necessary. Make it more straight forward by making the following changes. * Don't set it during initialization. Set it after DMA is actually mapped. * Add BUG_ON() to guarantee that there is data to transfer if DMAMAP is set. This always holds for the current code. The BUG_ON() is for docummentation and sanity check. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 76360f0ca20d..865428a64de3 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4475,7 +4475,6 @@ void ata_sg_clean(struct ata_queued_cmd *qc) int dir = qc->dma_dir; void *pad_buf = NULL; - WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP)); WARN_ON(sg == NULL); VPRINTK("unmapping %u sg elements\n", qc->n_elem); @@ -4762,11 +4761,9 @@ void ata_noop_qc_prep(struct ata_queued_cmd *qc) { } * LOCKING: * spin_lock_irqsave(host lock) */ - void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, unsigned int n_elem) { - qc->flags |= ATA_QCFLAG_DMAMAP; qc->__sg = sg; qc->n_elem = n_elem; qc->orig_n_elem = n_elem; @@ -4795,7 +4792,6 @@ static int ata_sg_setup(struct ata_queued_cmd *qc) int n_elem, pre_n_elem, dir, trim_sg = 0; VPRINTK("ENTER, ata%u\n", ap->print_id); - WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP)); /* we must lengthen transfers to end on a 32-bit boundary */ qc->pad_len = lsg->length & 3; @@ -4855,6 +4851,7 @@ static int ata_sg_setup(struct ata_queued_cmd *qc) skip_map: qc->n_elem = n_elem; + qc->flags |= ATA_QCFLAG_DMAMAP; return 0; } @@ -5912,12 +5909,15 @@ void ata_qc_issue(struct ata_queued_cmd *qc) qc->flags |= ATA_QCFLAG_ACTIVE; ap->qc_active |= 1 << qc->tag; + /* We guarantee to LLDs that they will have at least one + * non-zero sg if the command is a data command. + */ + BUG_ON(ata_is_data(prot) && (!qc->__sg || !qc->n_elem || !qc->nbytes)); + if (ata_is_dma(prot) || (ata_is_pio(prot) && - (ap->flags & ATA_FLAG_PIO_DMA))) { + (ap->flags & ATA_FLAG_PIO_DMA))) if (ata_sg_setup(qc)) goto sg_err; - } else - qc->flags &= ATA_QCFLAG_DMAMAP; /* if device is sleeping, schedule softreset and abort the link */ if (unlikely(qc->dev->flags & ATA_DFLAG_SLEEPING)) { @@ -5935,7 +5935,6 @@ void ata_qc_issue(struct ata_queued_cmd *qc) return; sg_err: - qc->flags &= ~ATA_QCFLAG_DMAMAP; qc->err_mask |= AC_ERR_SYSTEM; err: ata_qc_complete(qc); -- cgit v1.2.3-59-g8ed1b From ff2aeb1eb64c8a4770a6304f9addbae9f9828646 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 5 Dec 2007 16:43:11 +0900 Subject: libata: convert to chained sg libata used private sg iterator to handle padding sg. Now that sg can be chained, padding can be handled using standard sg ops. Convert to chained sg. * s/qc->__sg/qc->sg/ * s/qc->pad_sgent/qc->extra_sg[]/. Because chaining consumes one sg entry. There need to be two extra sg entries. The renaming is also for future addition of other extra sg entries. * Padding setup is moved into ata_sg_setup_extra() which is organized in a way that future addition of other extra sg entries is easy. * qc->orig_n_elem is unused and removed. * qc->n_elem now contains the number of sg entries that LLDs should map. qc->mapped_n_elem is added to carry the original number of mapped sgs for unmapping. * The last sg of the original sg list is used to chain to extra sg list. The original last sg is pointed to by qc->last_sg and the content is stored in qc->saved_last_sg. It's restored during ata_sg_clean(). * All sg walking code has been updated. Unnecessary assertions and checks for conditions the core layer already guarantees are removed. Signed-off-by: Tejun Heo Cc: Jens Axboe Signed-off-by: Jeff Garzik --- drivers/ata/ahci.c | 18 ++-- drivers/ata/libata-core.c | 201 +++++++++++++++++++++++++----------------- drivers/ata/libata-scsi.c | 2 +- drivers/ata/pata_bf54x.c | 13 +-- drivers/ata/pata_icside.c | 3 +- drivers/ata/pdc_adma.c | 3 +- drivers/ata/sata_fsl.c | 4 +- drivers/ata/sata_mv.c | 3 +- drivers/ata/sata_nv.c | 25 ++---- drivers/ata/sata_promise.c | 40 ++++----- drivers/ata/sata_qstor.c | 13 +-- drivers/ata/sata_sil24.c | 6 +- drivers/ata/sata_sx4.c | 4 +- drivers/scsi/ipr.c | 3 +- drivers/scsi/libsas/sas_ata.c | 10 +-- include/linux/libata.h | 42 ++------- 16 files changed, 193 insertions(+), 197 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 5eee91c73c90..cffad07c65bf 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1483,28 +1483,24 @@ static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf) static unsigned int ahci_fill_sg(struct ata_queued_cmd *qc, void *cmd_tbl) { struct scatterlist *sg; - struct ahci_sg *ahci_sg; - unsigned int n_sg = 0; + struct ahci_sg *ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ; + unsigned int si; VPRINTK("ENTER\n"); /* * Next, the S/G list. */ - ahci_sg = cmd_tbl + AHCI_CMD_TBL_HDR_SZ; - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { dma_addr_t addr = sg_dma_address(sg); u32 sg_len = sg_dma_len(sg); - ahci_sg->addr = cpu_to_le32(addr & 0xffffffff); - ahci_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16); - ahci_sg->flags_size = cpu_to_le32(sg_len - 1); - - ahci_sg++; - n_sg++; + ahci_sg[si].addr = cpu_to_le32(addr & 0xffffffff); + ahci_sg[si].addr_hi = cpu_to_le32((addr >> 16) >> 16); + ahci_sg[si].flags_size = cpu_to_le32(sg_len - 1); } - return n_sg; + return si; } static void ahci_qc_prep(struct ata_queued_cmd *qc) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 865428a64de3..e998028302da 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4471,13 +4471,13 @@ static unsigned int ata_dev_init_params(struct ata_device *dev, void ata_sg_clean(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; - struct scatterlist *sg = qc->__sg; + struct scatterlist *sg = qc->sg; int dir = qc->dma_dir; void *pad_buf = NULL; WARN_ON(sg == NULL); - VPRINTK("unmapping %u sg elements\n", qc->n_elem); + VPRINTK("unmapping %u sg elements\n", qc->mapped_n_elem); /* if we padded the buffer out to 32-bit bound, and data * xfer direction is from-device, we must copy from the @@ -4486,19 +4486,20 @@ void ata_sg_clean(struct ata_queued_cmd *qc) if (qc->pad_len && !(qc->tf.flags & ATA_TFLAG_WRITE)) pad_buf = ap->pad + (qc->tag * ATA_DMA_PAD_SZ); - if (qc->n_elem) - dma_unmap_sg(ap->dev, sg, qc->n_elem, dir); + if (qc->mapped_n_elem) + dma_unmap_sg(ap->dev, sg, qc->mapped_n_elem, dir); /* restore last sg */ - sg_last(sg, qc->orig_n_elem)->length += qc->pad_len; + if (qc->last_sg) + *qc->last_sg = qc->saved_last_sg; if (pad_buf) { - struct scatterlist *psg = &qc->pad_sgent; + struct scatterlist *psg = &qc->extra_sg[1]; void *addr = kmap_atomic(sg_page(psg), KM_IRQ0); memcpy(addr + psg->offset, pad_buf, qc->pad_len); kunmap_atomic(addr, KM_IRQ0); } qc->flags &= ~ATA_QCFLAG_DMAMAP; - qc->__sg = NULL; + qc->sg = NULL; } /** @@ -4516,13 +4517,10 @@ static void ata_fill_sg(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct scatterlist *sg; - unsigned int idx; + unsigned int si, pi; - WARN_ON(qc->__sg == NULL); - WARN_ON(qc->n_elem == 0 && qc->pad_len == 0); - - idx = 0; - ata_for_each_sg(sg, qc) { + pi = 0; + for_each_sg(qc->sg, sg, qc->n_elem, si) { u32 addr, offset; u32 sg_len, len; @@ -4539,18 +4537,17 @@ static void ata_fill_sg(struct ata_queued_cmd *qc) if ((offset + sg_len) > 0x10000) len = 0x10000 - offset; - ap->prd[idx].addr = cpu_to_le32(addr); - ap->prd[idx].flags_len = cpu_to_le32(len & 0xffff); - VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len); + ap->prd[pi].addr = cpu_to_le32(addr); + ap->prd[pi].flags_len = cpu_to_le32(len & 0xffff); + VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", pi, addr, len); - idx++; + pi++; sg_len -= len; addr += len; } } - if (idx) - ap->prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT); + ap->prd[pi - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT); } /** @@ -4570,13 +4567,10 @@ static void ata_fill_sg_dumb(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct scatterlist *sg; - unsigned int idx; - - WARN_ON(qc->__sg == NULL); - WARN_ON(qc->n_elem == 0 && qc->pad_len == 0); + unsigned int si, pi; - idx = 0; - ata_for_each_sg(sg, qc) { + pi = 0; + for_each_sg(qc->sg, sg, qc->n_elem, si) { u32 addr, offset; u32 sg_len, len, blen; @@ -4594,25 +4588,24 @@ static void ata_fill_sg_dumb(struct ata_queued_cmd *qc) len = 0x10000 - offset; blen = len & 0xffff; - ap->prd[idx].addr = cpu_to_le32(addr); + ap->prd[pi].addr = cpu_to_le32(addr); if (blen == 0) { /* Some PATA chipsets like the CS5530 can't cope with 0x0000 meaning 64K as the spec says */ - ap->prd[idx].flags_len = cpu_to_le32(0x8000); + ap->prd[pi].flags_len = cpu_to_le32(0x8000); blen = 0x8000; - ap->prd[++idx].addr = cpu_to_le32(addr + 0x8000); + ap->prd[++pi].addr = cpu_to_le32(addr + 0x8000); } - ap->prd[idx].flags_len = cpu_to_le32(blen); - VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len); + ap->prd[pi].flags_len = cpu_to_le32(blen); + VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", pi, addr, len); - idx++; + pi++; sg_len -= len; addr += len; } } - if (idx) - ap->prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT); + ap->prd[pi - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT); } /** @@ -4764,54 +4757,48 @@ void ata_noop_qc_prep(struct ata_queued_cmd *qc) { } void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, unsigned int n_elem) { - qc->__sg = sg; + qc->sg = sg; qc->n_elem = n_elem; - qc->orig_n_elem = n_elem; - qc->cursg = qc->__sg; + qc->cursg = qc->sg; } -/** - * ata_sg_setup - DMA-map the scatter-gather table associated with a command. - * @qc: Command with scatter-gather table to be mapped. - * - * DMA-map the scatter-gather table associated with queued_cmd @qc. - * - * LOCKING: - * spin_lock_irqsave(host lock) - * - * RETURNS: - * Zero on success, negative on error. - * - */ - -static int ata_sg_setup(struct ata_queued_cmd *qc) +static unsigned int ata_sg_setup_extra(struct ata_queued_cmd *qc, + unsigned int *n_elem_extra) { struct ata_port *ap = qc->ap; - struct scatterlist *sg = qc->__sg; - struct scatterlist *lsg = sg_last(qc->__sg, qc->n_elem); - int n_elem, pre_n_elem, dir, trim_sg = 0; + unsigned int n_elem = qc->n_elem; + struct scatterlist *lsg, *copy_lsg = NULL, *tsg = NULL, *esg = NULL; - VPRINTK("ENTER, ata%u\n", ap->print_id); + *n_elem_extra = 0; + + /* needs padding? */ + qc->pad_len = qc->nbytes & 3; + + if (likely(!qc->pad_len)) + return n_elem; + + /* locate last sg and save it */ + lsg = sg_last(qc->sg, n_elem); + qc->last_sg = lsg; + qc->saved_last_sg = *lsg; + + sg_init_table(qc->extra_sg, ARRAY_SIZE(qc->extra_sg)); - /* we must lengthen transfers to end on a 32-bit boundary */ - qc->pad_len = lsg->length & 3; if (qc->pad_len) { + struct scatterlist *psg = &qc->extra_sg[1]; void *pad_buf = ap->pad + (qc->tag * ATA_DMA_PAD_SZ); - struct scatterlist *psg = &qc->pad_sgent; unsigned int offset; WARN_ON(qc->dev->class != ATA_DEV_ATAPI); memset(pad_buf, 0, ATA_DMA_PAD_SZ); - /* - * psg->page/offset are used to copy to-be-written + /* psg->page/offset are used to copy to-be-written * data in this function or read data in ata_sg_clean. */ offset = lsg->offset + lsg->length - qc->pad_len; - sg_init_table(psg, 1); sg_set_page(psg, nth_page(sg_page(lsg), offset >> PAGE_SHIFT), - qc->pad_len, offset_in_page(offset)); + qc->pad_len, offset_in_page(offset)); if (qc->tf.flags & ATA_TFLAG_WRITE) { void *addr = kmap_atomic(sg_page(psg), KM_IRQ0); @@ -4821,36 +4808,84 @@ static int ata_sg_setup(struct ata_queued_cmd *qc) sg_dma_address(psg) = ap->pad_dma + (qc->tag * ATA_DMA_PAD_SZ); sg_dma_len(psg) = ATA_DMA_PAD_SZ; - /* trim last sg */ + + /* Trim the last sg entry and chain the original and + * padding sg lists. + * + * Because chaining consumes one sg entry, one extra + * sg entry is allocated and the last sg entry is + * copied to it if the length isn't zero after padded + * amount is removed. + * + * If the last sg entry is completely replaced by + * padding sg entry, the first sg entry is skipped + * while chaining. + */ lsg->length -= qc->pad_len; - if (lsg->length == 0) - trim_sg = 1; + if (lsg->length) { + copy_lsg = &qc->extra_sg[0]; + tsg = &qc->extra_sg[0]; + } else { + n_elem--; + tsg = &qc->extra_sg[1]; + } + + esg = &qc->extra_sg[1]; - DPRINTK("padding done, sg[%d].length=%u pad_len=%u\n", - qc->n_elem - 1, lsg->length, qc->pad_len); + (*n_elem_extra)++; } - pre_n_elem = qc->n_elem; - if (trim_sg && pre_n_elem) - pre_n_elem--; + if (copy_lsg) + sg_set_page(copy_lsg, sg_page(lsg), lsg->length, lsg->offset); - if (!pre_n_elem) { - n_elem = 0; - goto skip_map; + sg_chain(lsg, 1, tsg); + sg_mark_end(esg); + + /* sglist can't start with chaining sg entry, fast forward */ + if (qc->sg == lsg) { + qc->sg = tsg; + qc->cursg = tsg; } - dir = qc->dma_dir; - n_elem = dma_map_sg(ap->dev, sg, pre_n_elem, dir); - if (n_elem < 1) { - /* restore last sg */ - lsg->length += qc->pad_len; - return -1; + return n_elem; +} + +/** + * ata_sg_setup - DMA-map the scatter-gather table associated with a command. + * @qc: Command with scatter-gather table to be mapped. + * + * DMA-map the scatter-gather table associated with queued_cmd @qc. + * + * LOCKING: + * spin_lock_irqsave(host lock) + * + * RETURNS: + * Zero on success, negative on error. + * + */ +static int ata_sg_setup(struct ata_queued_cmd *qc) +{ + struct ata_port *ap = qc->ap; + unsigned int n_elem, n_elem_extra; + + VPRINTK("ENTER, ata%u\n", ap->print_id); + + n_elem = ata_sg_setup_extra(qc, &n_elem_extra); + + if (n_elem) { + n_elem = dma_map_sg(ap->dev, qc->sg, n_elem, qc->dma_dir); + if (n_elem < 1) { + /* restore last sg */ + if (qc->last_sg) + *qc->last_sg = qc->saved_last_sg; + return -1; + } + DPRINTK("%d sg elements mapped\n", n_elem); } - DPRINTK("%d sg elements mapped\n", n_elem); + qc->n_elem = qc->mapped_n_elem = n_elem; + qc->n_elem += n_elem_extra; -skip_map: - qc->n_elem = n_elem; qc->flags |= ATA_QCFLAG_DMAMAP; return 0; @@ -5912,7 +5947,7 @@ void ata_qc_issue(struct ata_queued_cmd *qc) /* We guarantee to LLDs that they will have at least one * non-zero sg if the command is a data command. */ - BUG_ON(ata_is_data(prot) && (!qc->__sg || !qc->n_elem || !qc->nbytes)); + BUG_ON(ata_is_data(prot) && (!qc->sg || !qc->n_elem || !qc->nbytes)); if (ata_is_dma(prot) || (ata_is_pio(prot) && (ap->flags & ATA_FLAG_PIO_DMA))) diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 5fd780e509d4..42bf61599730 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -517,7 +517,7 @@ static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, qc->scsicmd = cmd; qc->scsidone = done; - qc->__sg = scsi_sglist(cmd); + qc->sg = scsi_sglist(cmd); qc->n_elem = scsi_sg_count(cmd); } else { cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); diff --git a/drivers/ata/pata_bf54x.c b/drivers/ata/pata_bf54x.c index 41cd921082ba..a32e3c44a606 100644 --- a/drivers/ata/pata_bf54x.c +++ b/drivers/ata/pata_bf54x.c @@ -832,6 +832,7 @@ static void bfin_bmdma_setup(struct ata_queued_cmd *qc) { unsigned short config = WDSIZE_16; struct scatterlist *sg; + unsigned int si; pr_debug("in atapi dma setup\n"); /* Program the ATA_CTRL register with dir */ @@ -839,7 +840,7 @@ static void bfin_bmdma_setup(struct ata_queued_cmd *qc) /* fill the ATAPI DMA controller */ set_dma_config(CH_ATAPI_TX, config); set_dma_x_modify(CH_ATAPI_TX, 2); - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { set_dma_start_addr(CH_ATAPI_TX, sg_dma_address(sg)); set_dma_x_count(CH_ATAPI_TX, sg_dma_len(sg) >> 1); } @@ -848,7 +849,7 @@ static void bfin_bmdma_setup(struct ata_queued_cmd *qc) /* fill the ATAPI DMA controller */ set_dma_config(CH_ATAPI_RX, config); set_dma_x_modify(CH_ATAPI_RX, 2); - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { set_dma_start_addr(CH_ATAPI_RX, sg_dma_address(sg)); set_dma_x_count(CH_ATAPI_RX, sg_dma_len(sg) >> 1); } @@ -867,6 +868,7 @@ static void bfin_bmdma_start(struct ata_queued_cmd *qc) struct ata_port *ap = qc->ap; void __iomem *base = (void __iomem *)ap->ioaddr.ctl_addr; struct scatterlist *sg; + unsigned int si; pr_debug("in atapi dma start\n"); if (!(ap->udma_mask || ap->mwdma_mask)) @@ -881,7 +883,7 @@ static void bfin_bmdma_start(struct ata_queued_cmd *qc) * data cache is enabled. Otherwise, this loop * is an empty loop and optimized out. */ - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { flush_dcache_range(sg_dma_address(sg), sg_dma_address(sg) + sg_dma_len(sg)); } @@ -910,7 +912,7 @@ static void bfin_bmdma_start(struct ata_queued_cmd *qc) ATAPI_SET_CONTROL(base, ATAPI_GET_CONTROL(base) | TFRCNT_RST); /* Set transfer length to buffer len */ - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { ATAPI_SET_XFER_LEN(base, (sg_dma_len(sg) >> 1)); } @@ -932,6 +934,7 @@ static void bfin_bmdma_stop(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct scatterlist *sg; + unsigned int si; pr_debug("in atapi dma stop\n"); if (!(ap->udma_mask || ap->mwdma_mask)) @@ -950,7 +953,7 @@ static void bfin_bmdma_stop(struct ata_queued_cmd *qc) * data cache is enabled. Otherwise, this loop * is an empty loop and optimized out. */ - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { invalidate_dcache_range( sg_dma_address(sg), sg_dma_address(sg) diff --git a/drivers/ata/pata_icside.c b/drivers/ata/pata_icside.c index 842fe08a3c13..5b8586dac63b 100644 --- a/drivers/ata/pata_icside.c +++ b/drivers/ata/pata_icside.c @@ -224,6 +224,7 @@ static void pata_icside_bmdma_setup(struct ata_queued_cmd *qc) struct pata_icside_state *state = ap->host->private_data; struct scatterlist *sg, *rsg = state->sg; unsigned int write = qc->tf.flags & ATA_TFLAG_WRITE; + unsigned int si; /* * We are simplex; BUG if we try to fiddle with DMA @@ -234,7 +235,7 @@ static void pata_icside_bmdma_setup(struct ata_queued_cmd *qc) /* * Copy ATAs scattered sg list into a contiguous array of sg */ - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { memcpy(rsg, sg, sizeof(*sg)); rsg++; } diff --git a/drivers/ata/pdc_adma.c b/drivers/ata/pdc_adma.c index 459cb7bb7d7f..8e1b7e9c0ae4 100644 --- a/drivers/ata/pdc_adma.c +++ b/drivers/ata/pdc_adma.c @@ -321,8 +321,9 @@ static int adma_fill_sg(struct ata_queued_cmd *qc) u8 *buf = pp->pkt, *last_buf = NULL; int i = (2 + buf[3]) * 8; u8 pFLAGS = pORD | ((qc->tf.flags & ATA_TFLAG_WRITE) ? pDIRO : 0); + unsigned int si; - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { u32 addr; u32 len; diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c index a3c33f165427..d041709dee1a 100644 --- a/drivers/ata/sata_fsl.c +++ b/drivers/ata/sata_fsl.c @@ -323,6 +323,7 @@ static unsigned int sata_fsl_fill_sg(struct ata_queued_cmd *qc, void *cmd_desc, struct scatterlist *sg; unsigned int num_prde = 0; u32 ttl_dwords = 0; + unsigned int si; /* * NOTE : direct & indirect prdt's are contigiously allocated @@ -333,13 +334,14 @@ static unsigned int sata_fsl_fill_sg(struct ata_queued_cmd *qc, void *cmd_desc, struct prde *prd_ptr_to_indirect_ext = NULL; unsigned indirect_ext_segment_sz = 0; dma_addr_t indirect_ext_segment_paddr; + unsigned int si; VPRINTK("SATA FSL : cd = 0x%x, prd = 0x%x\n", cmd_desc, prd); indirect_ext_segment_paddr = cmd_desc_paddr + SATA_FSL_CMD_DESC_OFFSET_TO_PRDT + SATA_FSL_MAX_PRD_DIRECT * 16; - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { dma_addr_t sg_addr = sg_dma_address(sg); u32 sg_len = sg_dma_len(sg); diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index 37b850ae0845..7e72463a90eb 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -1136,9 +1136,10 @@ static void mv_fill_sg(struct ata_queued_cmd *qc) struct mv_port_priv *pp = qc->ap->private_data; struct scatterlist *sg; struct mv_sg *mv_sg, *last_sg = NULL; + unsigned int si; mv_sg = pp->sg_tbl; - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { dma_addr_t addr = sg_dma_address(sg); u32 sg_len = sg_dma_len(sg); diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c index ed5dc7cb50cd..a0f98fdab7a0 100644 --- a/drivers/ata/sata_nv.c +++ b/drivers/ata/sata_nv.c @@ -1336,21 +1336,18 @@ static void nv_adma_fill_aprd(struct ata_queued_cmd *qc, static void nv_adma_fill_sg(struct ata_queued_cmd *qc, struct nv_adma_cpb *cpb) { struct nv_adma_port_priv *pp = qc->ap->private_data; - unsigned int idx; struct nv_adma_prd *aprd; struct scatterlist *sg; + unsigned int si; VPRINTK("ENTER\n"); - idx = 0; - - ata_for_each_sg(sg, qc) { - aprd = (idx < 5) ? &cpb->aprd[idx] : - &pp->aprd[NV_ADMA_SGTBL_LEN * qc->tag + (idx-5)]; - nv_adma_fill_aprd(qc, sg, idx, aprd); - idx++; + for_each_sg(qc->sg, sg, qc->n_elem, si) { + aprd = (si < 5) ? &cpb->aprd[si] : + &pp->aprd[NV_ADMA_SGTBL_LEN * qc->tag + (si-5)]; + nv_adma_fill_aprd(qc, sg, si, aprd); } - if (idx > 5) + if (si > 5) cpb->next_aprd = cpu_to_le64(((u64)(pp->aprd_dma + NV_ADMA_SGTBL_SZ * qc->tag))); else cpb->next_aprd = cpu_to_le64(0); @@ -1995,17 +1992,14 @@ static void nv_swncq_fill_sg(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct scatterlist *sg; - unsigned int idx; struct nv_swncq_port_priv *pp = ap->private_data; struct ata_prd *prd; - - WARN_ON(qc->__sg == NULL); - WARN_ON(qc->n_elem == 0 && qc->pad_len == 0); + unsigned int si, idx; prd = pp->prd + ATA_MAX_PRD * qc->tag; idx = 0; - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { u32 addr, offset; u32 sg_len, len; @@ -2027,8 +2021,7 @@ static void nv_swncq_fill_sg(struct ata_queued_cmd *qc) } } - if (idx) - prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT); + prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT); } static unsigned int nv_swncq_issue_atacmd(struct ata_port *ap, diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c index 01738d736d44..a07d319f6e8c 100644 --- a/drivers/ata/sata_promise.c +++ b/drivers/ata/sata_promise.c @@ -533,17 +533,15 @@ static void pdc_fill_sg(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct scatterlist *sg; - unsigned int idx; const u32 SG_COUNT_ASIC_BUG = 41*4; + unsigned int si, idx; + u32 len; if (!(qc->flags & ATA_QCFLAG_DMAMAP)) return; - WARN_ON(qc->__sg == NULL); - WARN_ON(qc->n_elem == 0 && qc->pad_len == 0); - idx = 0; - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { u32 addr, offset; u32 sg_len, len; @@ -570,29 +568,27 @@ static void pdc_fill_sg(struct ata_queued_cmd *qc) } } - if (idx) { - u32 len = le32_to_cpu(ap->prd[idx - 1].flags_len); + len = le32_to_cpu(ap->prd[idx - 1].flags_len); - if (len > SG_COUNT_ASIC_BUG) { - u32 addr; + if (len > SG_COUNT_ASIC_BUG) { + u32 addr; - VPRINTK("Splitting last PRD.\n"); + VPRINTK("Splitting last PRD.\n"); - addr = le32_to_cpu(ap->prd[idx - 1].addr); - ap->prd[idx - 1].flags_len = cpu_to_le32(len - SG_COUNT_ASIC_BUG); - VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx - 1, addr, SG_COUNT_ASIC_BUG); + addr = le32_to_cpu(ap->prd[idx - 1].addr); + ap->prd[idx - 1].flags_len = cpu_to_le32(len - SG_COUNT_ASIC_BUG); + VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx - 1, addr, SG_COUNT_ASIC_BUG); - addr = addr + len - SG_COUNT_ASIC_BUG; - len = SG_COUNT_ASIC_BUG; - ap->prd[idx].addr = cpu_to_le32(addr); - ap->prd[idx].flags_len = cpu_to_le32(len); - VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len); + addr = addr + len - SG_COUNT_ASIC_BUG; + len = SG_COUNT_ASIC_BUG; + ap->prd[idx].addr = cpu_to_le32(addr); + ap->prd[idx].flags_len = cpu_to_le32(len); + VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len); - idx++; - } - - ap->prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT); + idx++; } + + ap->prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT); } static void pdc_qc_prep(struct ata_queued_cmd *qc) diff --git a/drivers/ata/sata_qstor.c b/drivers/ata/sata_qstor.c index 4e5f07bdd069..91cc12c82040 100644 --- a/drivers/ata/sata_qstor.c +++ b/drivers/ata/sata_qstor.c @@ -287,14 +287,10 @@ static unsigned int qs_fill_sg(struct ata_queued_cmd *qc) struct scatterlist *sg; struct ata_port *ap = qc->ap; struct qs_port_priv *pp = ap->private_data; - unsigned int nelem; u8 *prd = pp->pkt + QS_CPB_BYTES; + unsigned int si; - WARN_ON(qc->__sg == NULL); - WARN_ON(qc->n_elem == 0 && qc->pad_len == 0); - - nelem = 0; - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { u64 addr; u32 len; @@ -306,12 +302,11 @@ static unsigned int qs_fill_sg(struct ata_queued_cmd *qc) *(__le32 *)prd = cpu_to_le32(len); prd += sizeof(u64); - VPRINTK("PRD[%u] = (0x%llX, 0x%X)\n", nelem, + VPRINTK("PRD[%u] = (0x%llX, 0x%X)\n", si, (unsigned long long)addr, len); - nelem++; } - return nelem; + return si; } static void qs_qc_prep(struct ata_queued_cmd *qc) diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c index fdd3ceac329b..b4b1f91ea693 100644 --- a/drivers/ata/sata_sil24.c +++ b/drivers/ata/sata_sil24.c @@ -813,8 +813,9 @@ static inline void sil24_fill_sg(struct ata_queued_cmd *qc, { struct scatterlist *sg; struct sil24_sge *last_sge = NULL; + unsigned int si; - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { sge->addr = cpu_to_le64(sg_dma_address(sg)); sge->cnt = cpu_to_le32(sg_dma_len(sg)); sge->flags = 0; @@ -823,8 +824,7 @@ static inline void sil24_fill_sg(struct ata_queued_cmd *qc, sge++; } - if (likely(last_sge)) - last_sge->flags = cpu_to_le32(SGE_TRM); + last_sge->flags = cpu_to_le32(SGE_TRM); } static int sil24_qc_defer(struct ata_queued_cmd *qc) diff --git a/drivers/ata/sata_sx4.c b/drivers/ata/sata_sx4.c index 3de0c27caf53..211ba8da64f4 100644 --- a/drivers/ata/sata_sx4.c +++ b/drivers/ata/sata_sx4.c @@ -473,7 +473,7 @@ static void pdc20621_dma_prep(struct ata_queued_cmd *qc) void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR]; void __iomem *dimm_mmio = ap->host->iomap[PDC_DIMM_BAR]; unsigned int portno = ap->port_no; - unsigned int i, idx, total_len = 0, sgt_len; + unsigned int i, si, idx, total_len = 0, sgt_len; u32 *buf = (u32 *) &pp->dimm_buf[PDC_DIMM_HEADER_SZ]; WARN_ON(!(qc->flags & ATA_QCFLAG_DMAMAP)); @@ -487,7 +487,7 @@ static void pdc20621_dma_prep(struct ata_queued_cmd *qc) * Build S/G table */ idx = 0; - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { buf[idx++] = cpu_to_le32(sg_dma_address(sg)); buf[idx++] = cpu_to_le32(sg_dma_len(sg)); total_len += sg_dma_len(sg); diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 3e78bc2d9170..aa0df0a4b22a 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -5142,6 +5142,7 @@ static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, struct ipr_ioadl_desc *last_ioadl = NULL; int len = qc->nbytes + qc->pad_len; struct scatterlist *sg; + unsigned int si; if (len == 0) return; @@ -5159,7 +5160,7 @@ static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd, cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg); } - ata_for_each_sg(sg, qc) { + for_each_sg(qc->sg, sg, qc->n_elem, si) { ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg)); ioadl->address = cpu_to_be32(sg_dma_address(sg)); diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index f78d0605747d..827cfb132f21 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -158,8 +158,8 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc) struct Scsi_Host *host = sas_ha->core.shost; struct sas_internal *i = to_sas_internal(host->transportt); struct scatterlist *sg; - unsigned int num = 0; unsigned int xfer = 0; + unsigned int si; task = sas_alloc_task(GFP_ATOMIC); if (!task) @@ -181,17 +181,15 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc) task->total_xfer_len = qc->nbytes + qc->pad_len; task->num_scatter = qc->pad_len ? qc->n_elem + 1 : qc->n_elem; } else { - ata_for_each_sg(sg, qc) { - num++; + for_each_sg(qc->sg, sg, qc->n_elem, si) xfer += sg->length; - } task->total_xfer_len = xfer; - task->num_scatter = num; + task->num_scatter = si; } task->data_dir = qc->dma_dir; - task->scatter = qc->__sg; + task->scatter = qc->sg; task->ata_task.retry_count = 1; task->task_state_flags = SAS_TASK_STATE_PENDING; qc->lldd_task = task; diff --git a/include/linux/libata.h b/include/linux/libata.h index acd90ad78417..162f8b5509ac 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -458,7 +458,7 @@ struct ata_queued_cmd { unsigned int tag; unsigned int n_elem; unsigned int n_iter; - unsigned int orig_n_elem; + unsigned int mapped_n_elem; int dma_dir; @@ -471,11 +471,12 @@ struct ata_queued_cmd { struct scatterlist *cursg; unsigned int cursg_ofs; + struct scatterlist *last_sg; + struct scatterlist saved_last_sg; struct scatterlist sgent; - struct scatterlist pad_sgent; + struct scatterlist extra_sg[2]; - /* DO NOT iterate over __sg manually, use ata_for_each_sg() */ - struct scatterlist *__sg; + struct scatterlist *sg; unsigned int err_mask; struct ata_taskfile result_tf; @@ -1123,35 +1124,6 @@ extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset, const char *name); #endif -/* - * qc helpers - */ -static inline struct scatterlist * -ata_qc_first_sg(struct ata_queued_cmd *qc) -{ - qc->n_iter = 0; - if (qc->n_elem) - return qc->__sg; - if (qc->pad_len) - return &qc->pad_sgent; - return NULL; -} - -static inline struct scatterlist * -ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc) -{ - if (sg == &qc->pad_sgent) - return NULL; - if (++qc->n_iter < qc->n_elem) - return sg_next(sg); - if (qc->pad_len) - return &qc->pad_sgent; - return NULL; -} - -#define ata_for_each_sg(sg, qc) \ - for (sg = ata_qc_first_sg(qc); sg; sg = ata_qc_next_sg(sg, qc)) - static inline unsigned int ata_tag_valid(unsigned int tag) { return (tag < ATA_MAX_QUEUE) ? 1 : 0; @@ -1386,15 +1358,17 @@ static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf) static inline void ata_qc_reinit(struct ata_queued_cmd *qc) { qc->dma_dir = DMA_NONE; - qc->__sg = NULL; + qc->sg = NULL; qc->flags = 0; qc->cursg = NULL; qc->cursg_ofs = 0; qc->nbytes = qc->curbytes = 0; qc->n_elem = 0; + qc->mapped_n_elem = 0; qc->n_iter = 0; qc->err_mask = 0; qc->pad_len = 0; + qc->last_sg = NULL; qc->sect_size = ATA_SECT_SIZE; ata_tf_init(qc->dev, &qc->tf); -- cgit v1.2.3-59-g8ed1b From 0bcc65ad78ae517de16b2ca07a2891f49d44d156 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 5 Dec 2007 16:43:12 +0900 Subject: libata: make qc->nbytes include extra buffers qc->nbytes didn't use to include extra buffers setup by libata core layer and my be odd. This patch makes qc->nbytes include any extra buffers setup by libata core layer and guaranteed to be aligned on 4 byte boundary. This value is to be used to program the host controller. As this represents the actual length of buffer available to the controller and the controller must be able to deal with short transfers for ATAPI commands which can transfer variable length, this shouldn't break any controllers while making problems like rounding-down and controllers choking up on odd transfer bytes much less likely. The unmodified value is stored in new field qc->raw_nbytes. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 14 ++++++++++---- include/linux/libata.h | 3 ++- 2 files changed, 12 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index e998028302da..ee72994500a3 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4763,13 +4763,15 @@ void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, } static unsigned int ata_sg_setup_extra(struct ata_queued_cmd *qc, - unsigned int *n_elem_extra) + unsigned int *n_elem_extra, + unsigned int *nbytes_extra) { struct ata_port *ap = qc->ap; unsigned int n_elem = qc->n_elem; struct scatterlist *lsg, *copy_lsg = NULL, *tsg = NULL, *esg = NULL; *n_elem_extra = 0; + *nbytes_extra = 0; /* needs padding? */ qc->pad_len = qc->nbytes & 3; @@ -4833,6 +4835,7 @@ static unsigned int ata_sg_setup_extra(struct ata_queued_cmd *qc, esg = &qc->extra_sg[1]; (*n_elem_extra)++; + (*nbytes_extra) += 4 - qc->pad_len; } if (copy_lsg) @@ -4866,11 +4869,11 @@ static unsigned int ata_sg_setup_extra(struct ata_queued_cmd *qc, static int ata_sg_setup(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; - unsigned int n_elem, n_elem_extra; + unsigned int n_elem, n_elem_extra, nbytes_extra; VPRINTK("ENTER, ata%u\n", ap->print_id); - n_elem = ata_sg_setup_extra(qc, &n_elem_extra); + n_elem = ata_sg_setup_extra(qc, &n_elem_extra, &nbytes_extra); if (n_elem) { n_elem = dma_map_sg(ap->dev, qc->sg, n_elem, qc->dma_dir); @@ -4885,7 +4888,7 @@ static int ata_sg_setup(struct ata_queued_cmd *qc) qc->n_elem = qc->mapped_n_elem = n_elem; qc->n_elem += n_elem_extra; - + qc->nbytes += nbytes_extra; qc->flags |= ATA_QCFLAG_DMAMAP; return 0; @@ -5949,6 +5952,9 @@ void ata_qc_issue(struct ata_queued_cmd *qc) */ BUG_ON(ata_is_data(prot) && (!qc->sg || !qc->n_elem || !qc->nbytes)); + /* ata_sg_setup() may update nbytes */ + qc->raw_nbytes = qc->nbytes; + if (ata_is_dma(prot) || (ata_is_pio(prot) && (ap->flags & ATA_FLAG_PIO_DMA))) if (ata_sg_setup(qc)) diff --git a/include/linux/libata.h b/include/linux/libata.h index 162f8b5509ac..7b7c78e42077 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -466,6 +466,7 @@ struct ata_queued_cmd { unsigned int sect_size; unsigned int nbytes; + unsigned int raw_nbytes; unsigned int curbytes; struct scatterlist *cursg; @@ -1362,7 +1363,7 @@ static inline void ata_qc_reinit(struct ata_queued_cmd *qc) qc->flags = 0; qc->cursg = NULL; qc->cursg_ofs = 0; - qc->nbytes = qc->curbytes = 0; + qc->nbytes = qc->raw_nbytes = qc->curbytes = 0; qc->n_elem = 0; qc->mapped_n_elem = 0; qc->n_iter = 0; -- cgit v1.2.3-59-g8ed1b From a5df2eabdae7cd7840d59cffe621b3658a3a70cb Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 15 Oct 2007 20:44:11 +0100 Subject: pata_pcmcia: Add support for dumb 8bit IDE emulations Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/pata_pcmcia.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 70 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/pata_pcmcia.c b/drivers/ata/pata_pcmcia.c index fd36099428a4..bbd4d70b92de 100644 --- a/drivers/ata/pata_pcmcia.c +++ b/drivers/ata/pata_pcmcia.c @@ -86,6 +86,44 @@ static int pcmcia_set_mode(struct ata_link *link, struct ata_device **r_failed_d return ata_do_set_mode(link, r_failed_dev); } +/** + * pcmcia_set_mode_8bit - PCMCIA specific mode setup + * @link: link + * @r_failed_dev: Return pointer for failed device + * + * For the simple emulated 8bit stuff the less we do the better. + */ + +static int pcmcia_set_mode_8bit(struct ata_link *link, + struct ata_device **r_failed_dev) +{ + return 0; +} + +/** + * ata_data_xfer_8bit - Transfer data by 8bit PIO + * @adev: device to target + * @buf: data buffer + * @buflen: buffer length + * @write_data: read/write + * + * Transfer data from/to the device data register by 8 bit PIO. + * + * LOCKING: + * Inherited from caller. + */ + +static void ata_data_xfer_8bit(struct ata_device *adev, unsigned char *buf, + unsigned int buflen, int write_data) +{ + struct ata_port *ap = adev->link->ap; + if (write_data) + iowrite8_rep(ap->ioaddr.data_addr, buf, buflen); + else + ioread8_rep(ap->ioaddr.data_addr, buf, buflen); +} + + static struct scsi_host_template pcmcia_sht = { .module = THIS_MODULE, .name = DRV_NAME, @@ -129,12 +167,38 @@ static struct ata_port_operations pcmcia_port_ops = { .port_start = ata_sff_port_start, }; +static struct ata_port_operations pcmcia_8bit_port_ops = { + .set_mode = pcmcia_set_mode_8bit, + .tf_load = ata_tf_load, + .tf_read = ata_tf_read, + .check_status = ata_check_status, + .exec_command = ata_exec_command, + .dev_select = ata_std_dev_select, + + .freeze = ata_bmdma_freeze, + .thaw = ata_bmdma_thaw, + .error_handler = ata_bmdma_error_handler, + .post_internal_cmd = ata_bmdma_post_internal_cmd, + .cable_detect = ata_cable_40wire, + + .qc_prep = ata_qc_prep, + .qc_issue = ata_qc_issue_prot, + + .data_xfer = ata_data_xfer_8bit, + + .irq_clear = ata_bmdma_irq_clear, + .irq_on = ata_irq_on, + + .port_start = ata_sff_port_start, +}; + #define CS_CHECK(fn, ret) \ do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) /** * pcmcia_init_one - attach a PCMCIA interface * @pdev: pcmcia device + * @ops: operations for this device * * Register a PCMCIA IDE interface. Such interfaces are PIO 0 and * shared IRQ. @@ -157,6 +221,8 @@ static int pcmcia_init_one(struct pcmcia_device *pdev) unsigned long io_base, ctl_base; void __iomem *io_addr, *ctl_addr; + struct ata_port_operations *ops = &pcmcia_port_ops; + info = kzalloc(sizeof(*info), GFP_KERNEL); if (info == NULL) return -ENOMEM; @@ -284,6 +350,8 @@ next_entry: if (pdev->io.NumPorts1 >= 0x20) printk(KERN_WARNING DRV_NAME ": second channel not yet supported.\n"); + if (pdev->manf_id == 0x0097 && pdev->card_id == 0x1620) + ops = &pcmcia_8bit_port_ops; /* * Having done the PCMCIA plumbing the ATA side is relatively * sane. @@ -294,7 +362,7 @@ next_entry: goto failed; ap = host->ports[0]; - ap->ops = &pcmcia_port_ops; + ap->ops = ops; ap->pio_mask = 1; /* ISA so PIO 0 cycles */ ap->flags |= ATA_FLAG_SLAVE_POSS; ap->ioaddr.cmd_addr = io_addr; @@ -360,6 +428,7 @@ static struct pcmcia_device_id pcmcia_devices[] = { PCMCIA_DEVICE_MANF_CARD(0x0032, 0x0704), PCMCIA_DEVICE_MANF_CARD(0x0032, 0x2904), PCMCIA_DEVICE_MANF_CARD(0x0045, 0x0401), /* SanDisk CFA */ + PCMCIA_DEVICE_MANF_CARD(0x0097, 0x1620), /* TI emulated */ PCMCIA_DEVICE_MANF_CARD(0x0098, 0x0000), /* Toshiba */ PCMCIA_DEVICE_MANF_CARD(0x00a4, 0x002d), PCMCIA_DEVICE_MANF_CARD(0x00ce, 0x0000), /* Samsung */ -- cgit v1.2.3-59-g8ed1b From c5038fc05d4aa4ae0671776199459690e4c973cb Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Thu, 25 Oct 2007 14:21:16 +0100 Subject: libata/pata_it821x: Improve handling of poorly compatible emulations Some it821x RAID firmwares return 0 for the err return off both devices. A similar issue occurs with the slave returning 0 not 1 if you plug a gigabyte sata ramdisk into a controller that fakes two SATA ports as master/slave on an SFF channel. The patch does the following - Allow the 'failed diagnostics' case on both master and slave - Move the HORKAGE_DIAGNOSTIC check after ->dev_config This second change also allows IT821x to fix up a problem where we report drive diagnostic failures when in fact the drive is fine but the microcontroller firmware doesn't appear to get it right. IT821x clears the flag again to avoid giving the user bogus warnings about their disk. The other IT821x change is a bit ugly, we slightly abuse the cable type hook to fiddle with the identify data for the devices. We could add a new hook for this but as we have only one offender and no more seeming likely it seems better to keep libata-core clean. Please let this sit in -mm briefly, just in case the relaxed checking breaks some other emulated interface. Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 36 ++++++++++++++++++++---------------- drivers/ata/pata_it821x.c | 35 +++++++++++++++++++++++++++++++++-- 2 files changed, 53 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index ee72994500a3..627703cba9a6 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -950,8 +950,8 @@ unsigned int ata_dev_try_classify(struct ata_device *dev, int present, if (r_err) *r_err = err; - /* see if device passed diags: if master then continue and warn later */ - if (err == 0 && dev->devno == 0) + /* see if device passed diags: continue and warn later */ + if (err == 0) /* diagnostic fail : do nothing _YET_ */ dev->horkage |= ATA_HORKAGE_DIAGNOSTIC; else if (err == 1) @@ -2262,19 +2262,8 @@ int ata_dev_configure(struct ata_device *dev) dev->flags |= ATA_DFLAG_DIPM; } - if (dev->horkage & ATA_HORKAGE_DIAGNOSTIC) { - /* Let the user know. We don't want to disallow opens for - rescue purposes, or in case the vendor is just a blithering - idiot */ - if (print_info) { - ata_dev_printk(dev, KERN_WARNING, -"Drive reports diagnostics failure. This may indicate a drive\n"); - ata_dev_printk(dev, KERN_WARNING, -"fault or invalid emulation. Contact drive vendor for information.\n"); - } - } - - /* limit bridge transfers to udma5, 200 sectors */ + /* Limit PATA drive on SATA cable bridge transfers to udma5, + 200 sectors */ if (ata_dev_knobble(dev)) { if (ata_msg_drv(ap) && print_info) ata_dev_printk(dev, KERN_INFO, @@ -2303,6 +2292,21 @@ int ata_dev_configure(struct ata_device *dev) if (ap->ops->dev_config) ap->ops->dev_config(dev); + if (dev->horkage & ATA_HORKAGE_DIAGNOSTIC) { + /* Let the user know. We don't want to disallow opens for + rescue purposes, or in case the vendor is just a blithering + idiot. Do this after the dev_config call as some controllers + with buggy firmware may want to avoid reporting false device + bugs */ + + if (print_info) { + ata_dev_printk(dev, KERN_WARNING, +"Drive reports diagnostics failure. This may indicate a drive\n"); + ata_dev_printk(dev, KERN_WARNING, +"fault or invalid emulation. Contact drive vendor for information.\n"); + } + } + if (ata_msg_probe(ap)) ata_dev_printk(dev, KERN_DEBUG, "%s: EXIT, drv_stat = 0x%x\n", __FUNCTION__, ata_chk_status(ap)); @@ -3066,7 +3070,7 @@ static int ata_dev_set_mode(struct ata_device *dev) /* Early MWDMA devices do DMA but don't allow DMA mode setting. Don't fail an MWDMA0 set IFF the device indicates it is in MWDMA0 */ - if (dev->xfer_shift == ATA_SHIFT_MWDMA && + if (dev->xfer_shift == ATA_SHIFT_MWDMA && dev->dma_mode == XFER_MW_DMA_0 && (dev->id[63] >> 8) & 1) err_mask &= ~AC_ERR_DEV; diff --git a/drivers/ata/pata_it821x.c b/drivers/ata/pata_it821x.c index ca9aae09daed..109ddd42c266 100644 --- a/drivers/ata/pata_it821x.c +++ b/drivers/ata/pata_it821x.c @@ -430,7 +430,7 @@ static unsigned int it821x_smart_qc_issue_prot(struct ata_queued_cmd *qc) return ata_qc_issue_prot(qc); } printk(KERN_DEBUG "it821x: can't process command 0x%02X\n", qc->tf.command); - return AC_ERR_INVALID; + return AC_ERR_DEV; } /** @@ -516,6 +516,37 @@ static void it821x_dev_config(struct ata_device *adev) printk("(%dK stripe)", adev->id[146]); printk(".\n"); } + /* This is a controller firmware triggered funny, don't + report the drive faulty! */ + adev->horkage &= ~ATA_HORKAGE_DIAGNOSTIC; +} + +/** + * it821x_ident_hack - Hack identify data up + * @ap: Port + * + * Walk the devices on this firmware driven port and slightly + * mash the identify data to stop us and common tools trying to + * use features not firmware supported. The firmware itself does + * some masking (eg SMART) but not enough. + * + * This is a bit of an abuse of the cable method, but it is the + * only method called at the right time. We could modify the libata + * core specifically for ident hacking but while we have one offender + * it seems better to keep the fallout localised. + */ + +static int it821x_ident_hack(struct ata_port *ap) +{ + struct ata_device *adev; + ata_link_for_each_dev(adev, &ap->link) { + if (ata_dev_enabled(adev)) { + adev->id[84] &= ~(1 << 6); /* No FUA */ + adev->id[85] &= ~(1 << 10); /* No HPA */ + adev->id[76] = 0; /* No NCQ/AN etc */ + } + } + return ata_cable_unknown(ap); } @@ -634,7 +665,7 @@ static struct ata_port_operations it821x_smart_port_ops = { .thaw = ata_bmdma_thaw, .error_handler = ata_bmdma_error_handler, .post_internal_cmd = ata_bmdma_post_internal_cmd, - .cable_detect = ata_cable_unknown, + .cable_detect = it821x_ident_hack, .bmdma_setup = ata_bmdma_setup, .bmdma_start = ata_bmdma_start, -- cgit v1.2.3-59-g8ed1b From d7b174500e5750099537c7f0bc4873f06b6c1b9a Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Mon, 19 Nov 2007 14:43:07 +0000 Subject: pata_pcmcia: Minor cleanups and support for dual channel cards Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/pata_pcmcia.c | 31 +++++++++++++++++-------------- 1 file changed, 17 insertions(+), 14 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/pata_pcmcia.c b/drivers/ata/pata_pcmcia.c index bbd4d70b92de..ceba93b7754e 100644 --- a/drivers/ata/pata_pcmcia.c +++ b/drivers/ata/pata_pcmcia.c @@ -42,7 +42,7 @@ #define DRV_NAME "pata_pcmcia" -#define DRV_VERSION "0.3.2" +#define DRV_VERSION "0.3.3" /* * Private data structure to glue stuff together @@ -198,7 +198,6 @@ do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) /** * pcmcia_init_one - attach a PCMCIA interface * @pdev: pcmcia device - * @ops: operations for this device * * Register a PCMCIA IDE interface. Such interfaces are PIO 0 and * shared IRQ. @@ -217,9 +216,10 @@ static int pcmcia_init_one(struct pcmcia_device *pdev) cistpl_cftable_entry_t dflt; } *stk = NULL; cistpl_cftable_entry_t *cfg; - int pass, last_ret = 0, last_fn = 0, is_kme = 0, ret = -ENOMEM; + int pass, last_ret = 0, last_fn = 0, is_kme = 0, ret = -ENOMEM, p; unsigned long io_base, ctl_base; void __iomem *io_addr, *ctl_addr; + int n_ports = 1; struct ata_port_operations *ops = &pcmcia_port_ops; @@ -348,7 +348,7 @@ next_entry: /* FIXME: Could be more ports at base + 0x10 but we only deal with one right now */ if (pdev->io.NumPorts1 >= 0x20) - printk(KERN_WARNING DRV_NAME ": second channel not yet supported.\n"); + n_ports = 2; if (pdev->manf_id == 0x0097 && pdev->card_id == 0x1620) ops = &pcmcia_8bit_port_ops; @@ -357,20 +357,23 @@ next_entry: * sane. */ ret = -ENOMEM; - host = ata_host_alloc(&pdev->dev, 1); + host = ata_host_alloc(&pdev->dev, n_ports); if (!host) goto failed; - ap = host->ports[0]; - ap->ops = ops; - ap->pio_mask = 1; /* ISA so PIO 0 cycles */ - ap->flags |= ATA_FLAG_SLAVE_POSS; - ap->ioaddr.cmd_addr = io_addr; - ap->ioaddr.altstatus_addr = ctl_addr; - ap->ioaddr.ctl_addr = ctl_addr; - ata_std_ports(&ap->ioaddr); + for (p = 0; p < n_ports; p++) { + ap = host->ports[p]; - ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io_base, ctl_base); + ap->ops = ops; + ap->pio_mask = 1; /* ISA so PIO 0 cycles */ + ap->flags |= ATA_FLAG_SLAVE_POSS; + ap->ioaddr.cmd_addr = io_addr + 0x10 * p; + ap->ioaddr.altstatus_addr = ctl_addr + 0x10 * p; + ap->ioaddr.ctl_addr = ctl_addr + 0x10 * p; + ata_std_ports(&ap->ioaddr); + + ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io_base, ctl_base); + } /* activate */ ret = ata_host_activate(host, pdev->irq.AssignedIRQ, ata_interrupt, -- cgit v1.2.3-59-g8ed1b From 442eacc362c2576aac8ebfd41b99252e28e0f49c Mon Sep 17 00:00:00 2001 From: Jeff Garzik Date: Wed, 19 Dec 2007 04:25:10 -0500 Subject: libata: make ata_port_queue_task() an internal function ata_port_queue_task() served a single user: ata_pio_task() Rename to ata_pio_queue_task() and un-export it, as nobody outside of libata-core.c uses it. Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 24 +++++++++++------------- include/linux/libata.h | 2 -- 2 files changed, 11 insertions(+), 15 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 627703cba9a6..4020a1d3eb2c 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1480,7 +1480,7 @@ unsigned long ata_id_xfermask(const u16 *id) } /** - * ata_port_queue_task - Queue port_task + * ata_pio_queue_task - Queue port_task * @ap: The ata_port to queue port_task for * @fn: workqueue function to be scheduled * @data: data for @fn to use @@ -1492,16 +1492,15 @@ unsigned long ata_id_xfermask(const u16 *id) * one task is active at any given time. * * libata core layer takes care of synchronization between - * port_task and EH. ata_port_queue_task() may be ignored for EH + * port_task and EH. ata_pio_queue_task() may be ignored for EH * synchronization. * * LOCKING: * Inherited from caller. */ -void ata_port_queue_task(struct ata_port *ap, work_func_t fn, void *data, - unsigned long delay) +static void ata_pio_queue_task(struct ata_port *ap, void *data, + unsigned long delay) { - PREPARE_DELAYED_WORK(&ap->port_task, fn); ap->port_task_data = data; /* may fail if ata_port_flush_task() in progress */ @@ -5618,7 +5617,7 @@ fsm_start: msleep(2); status = ata_busy_wait(ap, ATA_BUSY, 10); if (status & ATA_BUSY) { - ata_port_queue_task(ap, ata_pio_task, qc, ATA_SHORT_PAUSE); + ata_pio_queue_task(ap, qc, ATA_SHORT_PAUSE); return; } } @@ -6041,7 +6040,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc) ap->hsm_task_state = HSM_ST_LAST; if (qc->tf.flags & ATA_TFLAG_POLLING) - ata_port_queue_task(ap, ata_pio_task, qc, 0); + ata_pio_queue_task(ap, qc, 0); break; @@ -6063,7 +6062,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc) if (qc->tf.flags & ATA_TFLAG_WRITE) { /* PIO data out protocol */ ap->hsm_task_state = HSM_ST_FIRST; - ata_port_queue_task(ap, ata_pio_task, qc, 0); + ata_pio_queue_task(ap, qc, 0); /* always send first data block using * the ata_pio_task() codepath. @@ -6073,7 +6072,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc) ap->hsm_task_state = HSM_ST; if (qc->tf.flags & ATA_TFLAG_POLLING) - ata_port_queue_task(ap, ata_pio_task, qc, 0); + ata_pio_queue_task(ap, qc, 0); /* if polling, ata_pio_task() handles the rest. * otherwise, interrupt handler takes over from here. @@ -6094,7 +6093,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc) /* send cdb by polling if no cdb interrupt */ if ((!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) || (qc->tf.flags & ATA_TFLAG_POLLING)) - ata_port_queue_task(ap, ata_pio_task, qc, 0); + ata_pio_queue_task(ap, qc, 0); break; case ATAPI_PROT_DMA: @@ -6106,7 +6105,7 @@ unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc) /* send cdb by polling if no cdb interrupt */ if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) - ata_port_queue_task(ap, ata_pio_task, qc, 0); + ata_pio_queue_task(ap, qc, 0); break; default: @@ -6722,7 +6721,7 @@ struct ata_port *ata_port_alloc(struct ata_host *host) ap->msg_enable = ATA_MSG_DRV | ATA_MSG_ERR | ATA_MSG_WARN; #endif - INIT_DELAYED_WORK(&ap->port_task, NULL); + INIT_DELAYED_WORK(&ap->port_task, ata_pio_task); INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug); INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan); INIT_LIST_HEAD(&ap->eh_done_q); @@ -7599,7 +7598,6 @@ EXPORT_SYMBOL_GPL(ata_wait_register); EXPORT_SYMBOL_GPL(ata_busy_sleep); EXPORT_SYMBOL_GPL(ata_wait_after_reset); EXPORT_SYMBOL_GPL(ata_wait_ready); -EXPORT_SYMBOL_GPL(ata_port_queue_task); EXPORT_SYMBOL_GPL(ata_scsi_ioctl); EXPORT_SYMBOL_GPL(ata_scsi_queuecmd); EXPORT_SYMBOL_GPL(ata_scsi_slave_config); diff --git a/include/linux/libata.h b/include/linux/libata.h index 7b7c78e42077..ccb055636f37 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -847,8 +847,6 @@ extern int ata_busy_sleep(struct ata_port *ap, unsigned long timeout_pat, unsigned long timeout); extern void ata_wait_after_reset(struct ata_port *ap, unsigned long deadline); extern int ata_wait_ready(struct ata_port *ap, unsigned long deadline); -extern void ata_port_queue_task(struct ata_port *ap, work_func_t fn, - void *data, unsigned long delay); extern u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val, unsigned long interval_msec, unsigned long timeout_msec); -- cgit v1.2.3-59-g8ed1b From 723159c58371b860cf6ef38affd19d16290e4898 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 4 Jan 2008 18:42:20 +0900 Subject: ata_piix: kill unused constants and flags Kill PIIX_FLAG_SCR, PIIX_PORT_ENABLED and PIIX_PORT_PRESENT. These are unused. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/ata_piix.c | 27 +++++++-------------------- 1 file changed, 7 insertions(+), 20 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index 2db635817edf..3183b3f38e49 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -102,19 +102,12 @@ enum { ICH5_PCS = 0x92, /* port control and status */ PIIX_SCC = 0x0A, /* sub-class code register */ - PIIX_FLAG_SCR = (1 << 26), /* SCR available */ PIIX_FLAG_AHCI = (1 << 27), /* AHCI possible */ PIIX_FLAG_CHECKINTR = (1 << 28), /* make sure PCI INTx enabled */ PIIX_PATA_FLAGS = ATA_FLAG_SLAVE_POSS, PIIX_SATA_FLAGS = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR, - /* combined mode. if set, PATA is channel 0. - * if clear, PATA is channel 1. - */ - PIIX_PORT_ENABLED = (1 << 0), - PIIX_PORT_PRESENT = (1 << 4), - PIIX_80C_PRI = (1 << 5) | (1 << 4), PIIX_80C_SEC = (1 << 7) | (1 << 6), @@ -588,7 +581,7 @@ static struct ata_port_info piix_port_info[] = { [ich6_sata] = { .sht = &piix_sht, - .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR, + .flags = PIIX_SATA_FLAGS, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = ATA_UDMA6, @@ -598,8 +591,7 @@ static struct ata_port_info piix_port_info[] = { [ich6_sata_ahci] = { .sht = &piix_sht, - .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR | - PIIX_FLAG_AHCI, + .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = ATA_UDMA6, @@ -609,8 +601,7 @@ static struct ata_port_info piix_port_info[] = { [ich6m_sata_ahci] = { .sht = &piix_sht, - .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR | - PIIX_FLAG_AHCI, + .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = ATA_UDMA6, @@ -620,8 +611,7 @@ static struct ata_port_info piix_port_info[] = { [ich8_sata_ahci] = { .sht = &piix_sht, - .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR | - PIIX_FLAG_AHCI, + .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = ATA_UDMA6, @@ -631,8 +621,7 @@ static struct ata_port_info piix_port_info[] = { [ich8_2port_sata] = { .sht = &piix_sht, - .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR | - PIIX_FLAG_AHCI, + .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = ATA_UDMA6, @@ -642,8 +631,7 @@ static struct ata_port_info piix_port_info[] = { [tolapai_sata_ahci] = { .sht = &piix_sht, - .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR | - PIIX_FLAG_AHCI, + .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = ATA_UDMA6, @@ -653,8 +641,7 @@ static struct ata_port_info piix_port_info[] = { [ich8m_apple_sata_ahci] = { .sht = &piix_sht, - .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR | - PIIX_FLAG_AHCI, + .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = ATA_UDMA6, -- cgit v1.2.3-59-g8ed1b From 35a10a80daa04b7316d6bac1b1402cc347c35b1e Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 4 Jan 2008 18:42:21 +0900 Subject: libata: use dev_driver_string() instead of "libata" in libata-sff.c libata-sff code used DRV_NAME which is hardcoded to "libata" when requesting resources. Use dev_driver_string() such that low level driver names are used in resource listing. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-sff.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index edeb4bea586c..97dd8f2796b7 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -551,7 +551,7 @@ int ata_pci_init_bmdma(struct ata_host *host) return rc; /* request and iomap DMA region */ - rc = pcim_iomap_regions(pdev, 1 << 4, DRV_NAME); + rc = pcim_iomap_regions(pdev, 1 << 4, dev_driver_string(gdev)); if (rc) { dev_printk(KERN_ERR, gdev, "failed to request/iomap BAR4\n"); return -ENOMEM; @@ -621,7 +621,8 @@ int ata_pci_init_sff_host(struct ata_host *host) continue; } - rc = pcim_iomap_regions(pdev, 0x3 << base, DRV_NAME); + rc = pcim_iomap_regions(pdev, 0x3 << base, + dev_driver_string(gdev)); if (rc) { dev_printk(KERN_WARNING, gdev, "failed to request/iomap BARs for port %d " @@ -741,6 +742,7 @@ int ata_pci_init_one(struct pci_dev *pdev, struct device *dev = &pdev->dev; const struct ata_port_info *pi = NULL; struct ata_host *host = NULL; + const char *drv_name = dev_driver_string(&pdev->dev); u8 mask; int legacy_mode = 0; int i, rc; @@ -813,7 +815,7 @@ int ata_pci_init_one(struct pci_dev *pdev, shouldn't happen on a sane system but robustness is cheap in this case */ rc = devm_request_irq(dev, pdev->irq, pi->port_ops->irq_handler, - IRQF_SHARED, DRV_NAME, host); + IRQF_SHARED, drv_name, host); if (rc) goto err_out; @@ -823,7 +825,7 @@ int ata_pci_init_one(struct pci_dev *pdev, if (!ata_port_is_dummy(host->ports[0])) { rc = devm_request_irq(dev, ATA_PRIMARY_IRQ(pdev), pi->port_ops->irq_handler, - IRQF_SHARED, DRV_NAME, host); + IRQF_SHARED, drv_name, host); if (rc) goto err_out; @@ -834,7 +836,7 @@ int ata_pci_init_one(struct pci_dev *pdev, if (!ata_port_is_dummy(host->ports[1])) { rc = devm_request_irq(dev, ATA_SECONDARY_IRQ(pdev), pi->port_ops->irq_handler, - IRQF_SHARED, DRV_NAME, host); + IRQF_SHARED, drv_name, host); if (rc) goto err_out; -- cgit v1.2.3-59-g8ed1b From 4ca4e439640cd1d3659cbcf60e7a73c2ae0450b3 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 30 Dec 2007 09:32:22 +0000 Subject: libata annotations and fixes Signed-off-by: Al Viro Signed-off-by: Jeff Garzik --- drivers/ata/ahci.c | 18 +++++++++--------- drivers/ata/libata-core.c | 2 +- drivers/ata/libata-scsi.c | 4 ++-- drivers/ata/pata_cs5520.c | 2 +- drivers/ata/pata_pdc2027x.c | 2 +- drivers/ata/sata_promise.h | 2 +- drivers/ata/sata_sx4.c | 9 +++++---- include/linux/ata.h | 4 ++-- 8 files changed, 22 insertions(+), 21 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index cffad07c65bf..49761bc12cf2 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -198,18 +198,18 @@ enum { }; struct ahci_cmd_hdr { - u32 opts; - u32 status; - u32 tbl_addr; - u32 tbl_addr_hi; - u32 reserved[4]; + __le32 opts; + __le32 status; + __le32 tbl_addr; + __le32 tbl_addr_hi; + __le32 reserved[4]; }; struct ahci_sg { - u32 addr; - u32 addr_hi; - u32 reserved; - u32 flags_size; + __le32 addr; + __le32 addr_hi; + __le32 reserved; + __le32 flags_size; }; struct ahci_host_priv { diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 4020a1d3eb2c..8c82193b077e 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4949,7 +4949,7 @@ unsigned int ata_data_xfer(struct ata_device *dev, unsigned char *buf, /* Transfer trailing 1 byte, if any. */ if (unlikely(buflen & 0x01)) { - u16 align_buf[1] = { 0 }; + __le16 align_buf[1] = { 0 }; unsigned char *trailing_buf = buf + buflen - 1; if (rw == READ) { diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 42bf61599730..15a4c8a20358 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2210,7 +2210,7 @@ unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf, /* sector size */ ATA_SCSI_RBUF_SET(6, ATA_SECT_SIZE >> 8); - ATA_SCSI_RBUF_SET(7, ATA_SECT_SIZE); + ATA_SCSI_RBUF_SET(7, ATA_SECT_SIZE & 0xff); } else { /* sector count, 64-bit */ ATA_SCSI_RBUF_SET(0, last_lba >> (8 * 7)); @@ -2224,7 +2224,7 @@ unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf, /* sector size */ ATA_SCSI_RBUF_SET(10, ATA_SECT_SIZE >> 8); - ATA_SCSI_RBUF_SET(11, ATA_SECT_SIZE); + ATA_SCSI_RBUF_SET(11, ATA_SECT_SIZE & 0xff); } return 0; diff --git a/drivers/ata/pata_cs5520.c b/drivers/ata/pata_cs5520.c index 33f7f0843f4f..d4590f546c49 100644 --- a/drivers/ata/pata_cs5520.c +++ b/drivers/ata/pata_cs5520.c @@ -198,7 +198,7 @@ static int __devinit cs5520_init_one(struct pci_dev *pdev, const struct pci_devi }; const struct ata_port_info *ppi[2]; u8 pcicfg; - void *iomap[5]; + void __iomem *iomap[5]; struct ata_host *host; struct ata_ioports *ioaddr; int i, rc; diff --git a/drivers/ata/pata_pdc2027x.c b/drivers/ata/pata_pdc2027x.c index 2622577521a1..028af5dbeed6 100644 --- a/drivers/ata/pata_pdc2027x.c +++ b/drivers/ata/pata_pdc2027x.c @@ -348,7 +348,7 @@ static unsigned long pdc2027x_mode_filter(struct ata_device *adev, unsigned long ata_id_c_string(pair->id, model_num, ATA_ID_PROD, ATA_ID_PROD_LEN + 1); /* If the master is a maxtor in UDMA6 then the slave should not use UDMA 6 */ - if (strstr(model_num, "Maxtor") == 0 && pair->dma_mode == XFER_UDMA_6) + if (strstr(model_num, "Maxtor") == NULL && pair->dma_mode == XFER_UDMA_6) mask &= ~ (1 << (6 + ATA_SHIFT_UDMA)); return ata_pci_default_filter(adev, mask); diff --git a/drivers/ata/sata_promise.h b/drivers/ata/sata_promise.h index 6ee5e190262d..00d6000e546f 100644 --- a/drivers/ata/sata_promise.h +++ b/drivers/ata/sata_promise.h @@ -46,7 +46,7 @@ static inline unsigned int pdc_pkt_header(struct ata_taskfile *tf, unsigned int devno, u8 *buf) { u8 dev_reg; - u32 *buf32 = (u32 *) buf; + __le32 *buf32 = (__le32 *) buf; /* set control bits (byte 0), zero delay seq id (byte 3), * and seq id (byte 2) diff --git a/drivers/ata/sata_sx4.c b/drivers/ata/sata_sx4.c index 211ba8da64f4..e3d56bc6726d 100644 --- a/drivers/ata/sata_sx4.c +++ b/drivers/ata/sata_sx4.c @@ -334,7 +334,7 @@ static inline void pdc20621_ata_sg(struct ata_taskfile *tf, u8 *buf, { u32 addr; unsigned int dw = PDC_DIMM_APKT_PRD >> 2; - u32 *buf32 = (u32 *) buf; + __le32 *buf32 = (__le32 *) buf; /* output ATA packet S/G table */ addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA + @@ -356,7 +356,7 @@ static inline void pdc20621_host_sg(struct ata_taskfile *tf, u8 *buf, { u32 addr; unsigned int dw = PDC_DIMM_HPKT_PRD >> 2; - u32 *buf32 = (u32 *) buf; + __le32 *buf32 = (__le32 *) buf; /* output Host DMA packet S/G table */ addr = PDC_20621_DIMM_BASE + PDC_20621_DIMM_DATA + @@ -377,7 +377,7 @@ static inline unsigned int pdc20621_ata_pkt(struct ata_taskfile *tf, unsigned int portno) { unsigned int i, dw; - u32 *buf32 = (u32 *) buf; + __le32 *buf32 = (__le32 *) buf; u8 dev_reg; unsigned int dimm_sg = PDC_20621_DIMM_BASE + @@ -429,7 +429,8 @@ static inline void pdc20621_host_pkt(struct ata_taskfile *tf, u8 *buf, unsigned int portno) { unsigned int dw; - u32 tmp, *buf32 = (u32 *) buf; + u32 tmp; + __le32 *buf32 = (__le32 *) buf; unsigned int host_sg = PDC_20621_DIMM_BASE + (PDC_DIMM_WINDOW_STEP * portno) + diff --git a/include/linux/ata.h b/include/linux/ata.h index bc55471a4b2c..78bbacaed8c4 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -354,8 +354,8 @@ enum ata_ioctls { /* core structures */ struct ata_prd { - u32 addr; - u32 flags_len; + __le32 addr; + __le32 flags_len; }; struct ata_taskfile { -- cgit v1.2.3-59-g8ed1b From f885521f0aa4a4f9d339cf32a4821a56f3f97426 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 2 Jan 2008 20:12:47 +0900 Subject: pata_pcmcia: convert to new data_xfer prototype While merging data_xfer prototype change, pata_pcmcia was left out. Convert it. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/pata_pcmcia.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/pata_pcmcia.c b/drivers/ata/pata_pcmcia.c index ceba93b7754e..3e7f6a9da28b 100644 --- a/drivers/ata/pata_pcmcia.c +++ b/drivers/ata/pata_pcmcia.c @@ -102,10 +102,10 @@ static int pcmcia_set_mode_8bit(struct ata_link *link, /** * ata_data_xfer_8bit - Transfer data by 8bit PIO - * @adev: device to target + * @dev: device to target * @buf: data buffer * @buflen: buffer length - * @write_data: read/write + * @rw: read/write * * Transfer data from/to the device data register by 8 bit PIO. * @@ -113,14 +113,17 @@ static int pcmcia_set_mode_8bit(struct ata_link *link, * Inherited from caller. */ -static void ata_data_xfer_8bit(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data) +static unsigned int ata_data_xfer_8bit(struct ata_device *dev, + unsigned char *buf, unsigned int buflen, int rw) { - struct ata_port *ap = adev->link->ap; - if (write_data) - iowrite8_rep(ap->ioaddr.data_addr, buf, buflen); - else + struct ata_port *ap = dev->link->ap; + + if (rw == READ) ioread8_rep(ap->ioaddr.data_addr, buf, buflen); + else + iowrite8_rep(ap->ioaddr.data_addr, buf, buflen); + + return buflen; } -- cgit v1.2.3-59-g8ed1b From 045eeb4f796bf50439cfbf4f165946b648a1a928 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Thu, 10 Jan 2008 14:33:04 -0800 Subject: [libata] pata_winbond: update for new ->data_xfer hook drivers/spi/Kconfig:156:warning: 'select' used by config symbol 'SPI_PXA2XX' refers to undefined symbol 'PXA_SSP' drivers/ata/pata_winbond.c: In function 'winbond_data_xfer': drivers/ata/pata_winbond.c:109: error: 'read' undeclared (first use in this function) drivers/ata/pata_winbond.c:109: error: (Each undeclared identifier is reported only once drivers/ata/pata_winbond.c:109: error: for each function it appears in.) drivers/ata/pata_winbond.c:123: warning: 'return' with a value, in function returning void drivers/ata/pata_winbond.c: At top level: drivers/ata/pata_winbond.c:162: warning: initialization from incompatible pointer type distcc[29718] ERROR: compile drivers/ata/pata_winbond.c on bix/8 failed make[1]: *** [drivers/ata/pata_winbond.o] Error 1 make: *** [drivers/ata/pata_winbond.o] Error 2 Cc: Jeff Garzik Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- drivers/ata/pata_winbond.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/pata_winbond.c b/drivers/ata/pata_winbond.c index 7312e9182d69..17a9d0713232 100644 --- a/drivers/ata/pata_winbond.c +++ b/drivers/ata/pata_winbond.c @@ -92,8 +92,8 @@ static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev) } -static void winbond_data_xfer(struct ata_device *dev, unsigned char *buf, - unsigned int buflen, int rw) +static unsigned int winbond_data_xfer(struct ata_device *dev, + unsigned char *buf, unsigned int buflen, int rw) { struct ata_port *ap = dev->link->ap; int slop = buflen & 3; -- cgit v1.2.3-59-g8ed1b From c294f1b32940d5bf853e006b9ccc72629c859749 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Tue, 15 Jan 2008 15:42:37 -0800 Subject: [libata] pata_legacy: typo fix Cc: Jeff Garzik Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- drivers/ata/pata_legacy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c index dae85aa12e32..c37ba324e71c 100644 --- a/drivers/ata/pata_legacy.c +++ b/drivers/ata/pata_legacy.c @@ -252,7 +252,7 @@ static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev) static unsigned int pdc_data_xfer_vlb(struct ata_device *dev, unsigned char *buf, unsigned int buflen, int rw) { - if (ata_id_has_dword_io(adev->id)) { + if (ata_id_has_dword_io(dev->id)) { struct ata_port *ap = dev->link->ap; int slop = buflen & 3; unsigned long flags; -- cgit v1.2.3-59-g8ed1b From defc9cd826e4a99f550504a744f9407b518828ae Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Thu, 10 Jan 2008 14:33:10 -0800 Subject: pata_legacy: resychronize with upstream changes and resubmit Update the legacy driver so it can handle VLB ports nicely, and has an internal structure for nailing new ISA/VLB forms in. Anyone got an ALI14xx and a spare day ;) Also adds an "all" parameter so you can load this driver after all the PCI ones in a boot time kernel and tell it to grab anything ST412 compatible even if it is an unknown PCI device. That allows libata to offer the same "just get me a disk somehow" fallback that old IDE did. Obsoletes pata_qdi. Signed-off-by: Alan Cox Cc: Tejun Heo Cc: Jeff Garzik Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- drivers/ata/pata_legacy.c | 750 +++++++++++++++++++++++++++++++++++++--------- 1 file changed, 605 insertions(+), 145 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c index c37ba324e71c..c4a939b506c9 100644 --- a/drivers/ata/pata_legacy.c +++ b/drivers/ata/pata_legacy.c @@ -68,8 +68,9 @@ #define NR_HOST 6 -static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 }; -static int legacy_irq[NR_HOST] = { 14, 15, 11, 10, 8, 12 }; +static int all; +module_param(all, int, 0444); +MODULE_PARM_DESC(all, "Grab all legacy port devices, even if PCI(0=off, 1=on)"); struct legacy_data { unsigned long timing; @@ -80,20 +81,102 @@ struct legacy_data { }; +enum controller { + BIOS = 0, + SNOOP = 1, + PDC20230 = 2, + HT6560A = 3, + HT6560B = 4, + OPTI611A = 5, + OPTI46X = 6, + QDI6500 = 7, + QDI6580 = 8, + QDI6580DP = 9, /* Dual channel mode is different */ + + UNKNOWN = -1 +}; + + +struct legacy_probe { + unsigned char *name; + unsigned long port; + unsigned int irq; + unsigned int slot; + enum controller type; + unsigned long private; +}; + +struct legacy_controller { + const char *name; + struct ata_port_operations *ops; + unsigned int pio_mask; + unsigned int flags; + int (*setup)(struct legacy_probe *probe, struct legacy_data *data); +}; + +static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 }; + +static struct legacy_probe probe_list[NR_HOST]; static struct legacy_data legacy_data[NR_HOST]; static struct ata_host *legacy_host[NR_HOST]; static int nr_legacy_host; -static int probe_all; /* Set to check all ISA port ranges */ -static int ht6560a; /* HT 6560A on primary 1, secondary 2, both 3 */ -static int ht6560b; /* HT 6560A on primary 1, secondary 2, both 3 */ -static int opti82c611a; /* Opti82c611A on primary 1, secondary 2, both 3 */ -static int opti82c46x; /* Opti 82c465MV present (pri/sec autodetect) */ -static int autospeed; /* Chip present which snoops speed changes */ -static int pio_mask = 0x1F; /* PIO range for autospeed devices */ +static int probe_all; /* Set to check all ISA port ranges */ +static int ht6560a; /* HT 6560A on primary 1, second 2, both 3 */ +static int ht6560b; /* HT 6560A on primary 1, second 2, both 3 */ +static int opti82c611a; /* Opti82c611A on primary 1, sec 2, both 3 */ +static int opti82c46x; /* Opti 82c465MV present(pri/sec autodetect) */ +static int qdi; /* Set to probe QDI controllers */ +static int autospeed; /* Chip present which snoops speed changes */ +static int pio_mask = 0x1F; /* PIO range for autospeed devices */ static int iordy_mask = 0xFFFFFFFF; /* Use iordy if available */ +/** + * legacy_probe_add - Add interface to probe list + * @port: Controller port + * @irq: IRQ number + * @type: Controller type + * @private: Controller specific info + * + * Add an entry into the probe list for ATA controllers. This is used + * to add the default ISA slots and then to build up the table + * further according to other ISA/VLB/Weird device scans + * + * An I/O port list is used to keep ordering stable and sane, as we + * don't have any good way to talk about ordering otherwise + */ + +static int legacy_probe_add(unsigned long port, unsigned int irq, + enum controller type, unsigned long private) +{ + struct legacy_probe *lp = &probe_list[0]; + int i; + struct legacy_probe *free = NULL; + + for (i = 0; i < NR_HOST; i++) { + if (lp->port == 0 && free == NULL) + free = lp; + /* Matching port, or the correct slot for ordering */ + if (lp->port == port || legacy_port[i] == port) { + free = lp; + break; + } + lp++; + } + if (free == NULL) { + printk(KERN_ERR "pata_legacy: Too many interfaces.\n"); + return -1; + } + /* Fill in the entry for later probing */ + free->port = port; + free->irq = irq; + free->type = type; + free->private = private; + return 0; +} + + /** * legacy_set_mode - mode setting * @link: IDE link @@ -113,7 +196,8 @@ static int legacy_set_mode(struct ata_link *link, struct ata_device **unused) ata_link_for_each_dev(dev, link) { if (ata_dev_enabled(dev)) { - ata_dev_printk(dev, KERN_INFO, "configured for PIO\n"); + ata_dev_printk(dev, KERN_INFO, + "configured for PIO\n"); dev->pio_mode = XFER_PIO_0; dev->xfer_mode = XFER_PIO_0; dev->xfer_shift = ATA_SHIFT_PIO; @@ -171,7 +255,7 @@ static struct ata_port_operations simple_port_ops = { .irq_clear = ata_bmdma_irq_clear, .irq_on = ata_irq_on, - .port_start = ata_port_start, + .port_start = ata_sff_port_start, }; static struct ata_port_operations legacy_port_ops = { @@ -198,15 +282,16 @@ static struct ata_port_operations legacy_port_ops = { .irq_clear = ata_bmdma_irq_clear, .irq_on = ata_irq_on, - .port_start = ata_port_start, + .port_start = ata_sff_port_start, }; /* * Promise 20230C and 20620 support * - * This controller supports PIO0 to PIO2. We set PIO timings conservatively to - * allow for 50MHz Vesa Local Bus. The 20620 DMA support is weird being DMA to - * controller and PIO'd to the host and not supported. + * This controller supports PIO0 to PIO2. We set PIO timings + * conservatively to allow for 50MHz Vesa Local Bus. The 20620 DMA + * support is weird being DMA to controller and PIO'd to the host + * and not supported. */ static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev) @@ -221,8 +306,7 @@ static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev) local_irq_save(flags); /* Unlock the control interface */ - do - { + do { inb(0x1F5); outb(inb(0x1F2) | 0x80, 0x1F2); inb(0x1F2); @@ -231,7 +315,7 @@ static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev) inb(0x1F2); inb(0x1F2); } - while((inb(0x1F2) & 0x80) && --tries); + while ((inb(0x1F2) & 0x80) && --tries); local_irq_restore(flags); @@ -250,7 +334,7 @@ static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev) } static unsigned int pdc_data_xfer_vlb(struct ata_device *dev, - unsigned char *buf, unsigned int buflen, int rw) + unsigned char *buf, unsigned int buflen, int rw) { if (ata_id_has_dword_io(dev->id)) { struct ata_port *ap = dev->link->ap; @@ -312,14 +396,14 @@ static struct ata_port_operations pdc20230_port_ops = { .irq_clear = ata_bmdma_irq_clear, .irq_on = ata_irq_on, - .port_start = ata_port_start, + .port_start = ata_sff_port_start, }; /* * Holtek 6560A support * - * This controller supports PIO0 to PIO2 (no IORDY even though higher timings - * can be loaded). + * This controller supports PIO0 to PIO2 (no IORDY even though higher + * timings can be loaded). */ static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev) @@ -366,14 +450,14 @@ static struct ata_port_operations ht6560a_port_ops = { .irq_clear = ata_bmdma_irq_clear, .irq_on = ata_irq_on, - .port_start = ata_port_start, + .port_start = ata_sff_port_start, }; /* * Holtek 6560B support * - * This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO setting - * unless we see an ATAPI device in which case we force it off. + * This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO + * setting unless we see an ATAPI device in which case we force it off. * * FIXME: need to implement 2nd channel support. */ @@ -400,7 +484,7 @@ static void ht6560b_set_piomode(struct ata_port *ap, struct ata_device *adev) if (adev->class != ATA_DEV_ATA) { u8 rconf = inb(0x3E6); if (rconf & 0x24) { - rconf &= ~ 0x24; + rconf &= ~0x24; outb(rconf, 0x3E6); } } @@ -425,13 +509,13 @@ static struct ata_port_operations ht6560b_port_ops = { .qc_prep = ata_qc_prep, .qc_issue = ata_qc_issue_prot, - .data_xfer = ata_data_xfer, /* FIXME: Check 32bit and noirq */ + .data_xfer = ata_data_xfer, /* FIXME: Check 32bit and noirq */ .irq_handler = ata_interrupt, .irq_clear = ata_bmdma_irq_clear, .irq_on = ata_irq_on, - .port_start = ata_port_start, + .port_start = ata_sff_port_start, }; /* @@ -464,7 +548,8 @@ static u8 opti_syscfg(u8 reg) * This controller supports PIO0 to PIO3. */ -static void opti82c611a_set_piomode(struct ata_port *ap, struct ata_device *adev) +static void opti82c611a_set_piomode(struct ata_port *ap, + struct ata_device *adev) { u8 active, recover, setup; struct ata_timing t; @@ -551,7 +636,7 @@ static struct ata_port_operations opti82c611a_port_ops = { .irq_clear = ata_bmdma_irq_clear, .irq_on = ata_irq_on, - .port_start = ata_port_start, + .port_start = ata_sff_port_start, }; /* @@ -683,77 +768,282 @@ static struct ata_port_operations opti82c46x_port_ops = { .irq_clear = ata_bmdma_irq_clear, .irq_on = ata_irq_on, - .port_start = ata_port_start, + .port_start = ata_sff_port_start, }; +static void qdi6500_set_piomode(struct ata_port *ap, struct ata_device *adev) +{ + struct ata_timing t; + struct legacy_data *qdi = ap->host->private_data; + int active, recovery; + u8 timing; + + /* Get the timing data in cycles */ + ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000); + + if (qdi->fast) { + active = 8 - FIT(t.active, 1, 8); + recovery = 18 - FIT(t.recover, 3, 18); + } else { + active = 9 - FIT(t.active, 2, 9); + recovery = 15 - FIT(t.recover, 0, 15); + } + timing = (recovery << 4) | active | 0x08; + + qdi->clock[adev->devno] = timing; + + outb(timing, qdi->timing); +} /** - * legacy_init_one - attach a legacy interface - * @port: port number - * @io: I/O port start - * @ctrl: control port + * qdi6580dp_set_piomode - PIO setup for dual channel + * @ap: Port + * @adev: Device * @irq: interrupt line * - * Register an ISA bus IDE interface. Such interfaces are PIO and we - * assume do not support IRQ sharing. + * In dual channel mode the 6580 has one clock per channel and we have + * to software clockswitch in qc_issue_prot. */ -static __init int legacy_init_one(int port, unsigned long io, unsigned long ctrl, int irq) +static void qdi6580dp_set_piomode(struct ata_port *ap, struct ata_device *adev) { - struct legacy_data *ld = &legacy_data[nr_legacy_host]; - struct ata_host *host; - struct ata_port *ap; - struct platform_device *pdev; - struct ata_port_operations *ops = &legacy_port_ops; - void __iomem *io_addr, *ctrl_addr; - int pio_modes = pio_mask; - u32 mask = (1 << port); - u32 iordy = (iordy_mask & mask) ? 0: ATA_FLAG_NO_IORDY; - int ret; + struct ata_timing t; + struct legacy_data *qdi = ap->host->private_data; + int active, recovery; + u8 timing; - pdev = platform_device_register_simple(DRV_NAME, nr_legacy_host, NULL, 0); - if (IS_ERR(pdev)) - return PTR_ERR(pdev); + /* Get the timing data in cycles */ + ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000); + + if (qdi->fast) { + active = 8 - FIT(t.active, 1, 8); + recovery = 18 - FIT(t.recover, 3, 18); + } else { + active = 9 - FIT(t.active, 2, 9); + recovery = 15 - FIT(t.recover, 0, 15); + } + timing = (recovery << 4) | active | 0x08; - ret = -EBUSY; - if (devm_request_region(&pdev->dev, io, 8, "pata_legacy") == NULL || - devm_request_region(&pdev->dev, ctrl, 1, "pata_legacy") == NULL) - goto fail; + qdi->clock[adev->devno] = timing; - ret = -ENOMEM; - io_addr = devm_ioport_map(&pdev->dev, io, 8); - ctrl_addr = devm_ioport_map(&pdev->dev, ctrl, 1); - if (!io_addr || !ctrl_addr) - goto fail; + outb(timing, qdi->timing + 2 * ap->port_no); + /* Clear the FIFO */ + if (adev->class != ATA_DEV_ATA) + outb(0x5F, qdi->timing + 3); +} - if (ht6560a & mask) { - ops = &ht6560a_port_ops; - pio_modes = 0x07; - iordy = ATA_FLAG_NO_IORDY; - } - if (ht6560b & mask) { - ops = &ht6560b_port_ops; - pio_modes = 0x1F; - } - if (opti82c611a & mask) { - ops = &opti82c611a_port_ops; - pio_modes = 0x0F; +/** + * qdi6580_set_piomode - PIO setup for single channel + * @ap: Port + * @adev: Device + * + * In single channel mode the 6580 has one clock per device and we can + * avoid the requirement to clock switch. We also have to load the timing + * into the right clock according to whether we are master or slave. + */ + +static void qdi6580_set_piomode(struct ata_port *ap, struct ata_device *adev) +{ + struct ata_timing t; + struct legacy_data *qdi = ap->host->private_data; + int active, recovery; + u8 timing; + + /* Get the timing data in cycles */ + ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000); + + if (qdi->fast) { + active = 8 - FIT(t.active, 1, 8); + recovery = 18 - FIT(t.recover, 3, 18); + } else { + active = 9 - FIT(t.active, 2, 9); + recovery = 15 - FIT(t.recover, 0, 15); } - if (opti82c46x & mask) { - ops = &opti82c46x_port_ops; - pio_modes = 0x0F; + timing = (recovery << 4) | active | 0x08; + qdi->clock[adev->devno] = timing; + outb(timing, qdi->timing + 2 * adev->devno); + /* Clear the FIFO */ + if (adev->class != ATA_DEV_ATA) + outb(0x5F, qdi->timing + 3); +} + +/** + * qdi_qc_issue_prot - command issue + * @qc: command pending + * + * Called when the libata layer is about to issue a command. We wrap + * this interface so that we can load the correct ATA timings. + */ + +static unsigned int qdi_qc_issue_prot(struct ata_queued_cmd *qc) +{ + struct ata_port *ap = qc->ap; + struct ata_device *adev = qc->dev; + struct legacy_data *qdi = ap->host->private_data; + + if (qdi->clock[adev->devno] != qdi->last) { + if (adev->pio_mode) { + qdi->last = qdi->clock[adev->devno]; + outb(qdi->clock[adev->devno], qdi->timing + + 2 * ap->port_no); + } } + return ata_qc_issue_prot(qc); +} - /* Probe for automatically detectable controllers */ +/* For the 6580 can we flip the FIFO on/off at this point ? */ - if (io == 0x1F0 && ops == &legacy_port_ops) { - unsigned long flags; +static unsigned int qdi_data_xfer(struct ata_device *adev, unsigned char *buf, + unsigned int buflen, int rw) +{ + struct ata_port *ap = adev->link->ap; + int slop = buflen & 3; - local_irq_save(flags); + if (ata_id_has_dword_io(adev->id)) { + if (rw == WRITE) + iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); + else + ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); + if (unlikely(slop)) { + u32 pad; + if (rw == WRITE) { + memcpy(&pad, buf + buflen - slop, slop); + pad = le32_to_cpu(pad); + iowrite32(pad, ap->ioaddr.data_addr); + } else { + pad = ioread32(ap->ioaddr.data_addr); + pad = cpu_to_le32(pad); + memcpy(buf + buflen - slop, &pad, slop); + } + } + return (buflen + 3) & ~3; + } else + return ata_data_xfer(adev, buf, buflen, rw); +} + +static struct ata_port_operations qdi6500_port_ops = { + .set_piomode = qdi6500_set_piomode, + + .tf_load = ata_tf_load, + .tf_read = ata_tf_read, + .check_status = ata_check_status, + .exec_command = ata_exec_command, + .dev_select = ata_std_dev_select, + + .freeze = ata_bmdma_freeze, + .thaw = ata_bmdma_thaw, + .error_handler = ata_bmdma_error_handler, + .post_internal_cmd = ata_bmdma_post_internal_cmd, + .cable_detect = ata_cable_40wire, + + .qc_prep = ata_qc_prep, + .qc_issue = qdi_qc_issue_prot, + + .data_xfer = qdi_data_xfer, + + .irq_handler = ata_interrupt, + .irq_clear = ata_bmdma_irq_clear, + .irq_on = ata_irq_on, + + .port_start = ata_sff_port_start, +}; + +static struct ata_port_operations qdi6580_port_ops = { + .set_piomode = qdi6580_set_piomode, + + .tf_load = ata_tf_load, + .tf_read = ata_tf_read, + .check_status = ata_check_status, + .exec_command = ata_exec_command, + .dev_select = ata_std_dev_select, + + .freeze = ata_bmdma_freeze, + .thaw = ata_bmdma_thaw, + .error_handler = ata_bmdma_error_handler, + .post_internal_cmd = ata_bmdma_post_internal_cmd, + .cable_detect = ata_cable_40wire, + + .qc_prep = ata_qc_prep, + .qc_issue = ata_qc_issue_prot, + + .data_xfer = qdi_data_xfer, + + .irq_handler = ata_interrupt, + .irq_clear = ata_bmdma_irq_clear, + .irq_on = ata_irq_on, + + .port_start = ata_sff_port_start, +}; + +static struct ata_port_operations qdi6580dp_port_ops = { + .set_piomode = qdi6580dp_set_piomode, + + .tf_load = ata_tf_load, + .tf_read = ata_tf_read, + .check_status = ata_check_status, + .exec_command = ata_exec_command, + .dev_select = ata_std_dev_select, + + .freeze = ata_bmdma_freeze, + .thaw = ata_bmdma_thaw, + .error_handler = ata_bmdma_error_handler, + .post_internal_cmd = ata_bmdma_post_internal_cmd, + .cable_detect = ata_cable_40wire, + + .qc_prep = ata_qc_prep, + .qc_issue = qdi_qc_issue_prot, + + .data_xfer = qdi_data_xfer, + + .irq_handler = ata_interrupt, + .irq_clear = ata_bmdma_irq_clear, + .irq_on = ata_irq_on, + + .port_start = ata_sff_port_start, +}; + +static struct legacy_controller controllers[] = { + {"BIOS", &legacy_port_ops, 0x1F, + ATA_FLAG_NO_IORDY, NULL }, + {"Snooping", &simple_port_ops, 0x1F, + 0 , NULL }, + {"PDC20230", &pdc20230_port_ops, 0x7, + ATA_FLAG_NO_IORDY, NULL }, + {"HT6560A", &ht6560a_port_ops, 0x07, + ATA_FLAG_NO_IORDY, NULL }, + {"HT6560B", &ht6560b_port_ops, 0x1F, + ATA_FLAG_NO_IORDY, NULL }, + {"OPTI82C611A", &opti82c611a_port_ops, 0x0F, + 0 , NULL }, + {"OPTI82C46X", &opti82c46x_port_ops, 0x0F, + 0 , NULL }, + {"QDI6500", &qdi6500_port_ops, 0x07, + ATA_FLAG_NO_IORDY, NULL }, + {"QDI6580", &qdi6580_port_ops, 0x1F, + 0 , NULL }, + {"QDI6580DP", &qdi6580dp_port_ops, 0x1F, + 0 , NULL } +}; + +/** + * probe_chip_type - Discover controller + * @probe: Probe entry to check + * + * Probe an ATA port and identify the type of controller. We don't + * check if the controller appears to be driveless at this point. + */ + +static int probe_chip_type(struct legacy_probe *probe) +{ + int mask = 1 << probe->slot; + + if (probe->port == 0x1F0) { + unsigned long flags; + local_irq_save(flags); /* Probes */ - inb(0x1F5); outb(inb(0x1F2) | 0x80, 0x1F2); + inb(0x1F5); inb(0x1F2); inb(0x3F6); inb(0x3F6); @@ -762,29 +1052,83 @@ static __init int legacy_init_one(int port, unsigned long io, unsigned long ctrl if ((inb(0x1F2) & 0x80) == 0) { /* PDC20230c or 20630 ? */ - printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller detected.\n"); - pio_modes = 0x07; - ops = &pdc20230_port_ops; - iordy = ATA_FLAG_NO_IORDY; + printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller" + " detected.\n"); udelay(100); inb(0x1F5); + local_irq_restore(flags); + return PDC20230; } else { outb(0x55, 0x1F2); inb(0x1F2); inb(0x1F2); - if (inb(0x1F2) == 0x00) { - printk(KERN_INFO "PDC20230-B VLB ATA controller detected.\n"); - } + if (inb(0x1F2) == 0x00) + printk(KERN_INFO "PDC20230-B VLB ATA " + "controller detected.\n"); + local_irq_restore(flags); + return BIOS; } local_irq_restore(flags); } + if (ht6560a & mask) + return HT6560A; + if (ht6560b & mask) + return HT6560B; + if (opti82c611a & mask) + return OPTI611A; + if (opti82c46x & mask) + return OPTI46X; + if (autospeed & mask) + return SNOOP; + return BIOS; +} + + +/** + * legacy_init_one - attach a legacy interface + * @pl: probe record + * + * Register an ISA bus IDE interface. Such interfaces are PIO and we + * assume do not support IRQ sharing. + */ + +static __init int legacy_init_one(struct legacy_probe *probe) +{ + struct legacy_controller *controller = &controllers[probe->type]; + int pio_modes = controller->pio_mask; + unsigned long io = probe->port; + u32 mask = (1 << probe->slot); + struct ata_port_operations *ops = controller->ops; + struct legacy_data *ld = &legacy_data[probe->slot]; + struct ata_host *host = NULL; + struct ata_port *ap; + struct platform_device *pdev; + struct ata_device *dev; + void __iomem *io_addr, *ctrl_addr; + u32 iordy = (iordy_mask & mask) ? 0: ATA_FLAG_NO_IORDY; + int ret; + + iordy |= controller->flags; + + pdev = platform_device_register_simple(DRV_NAME, probe->slot, NULL, 0); + if (IS_ERR(pdev)) + return PTR_ERR(pdev); - /* Chip does mode setting by command snooping */ - if (ops == &legacy_port_ops && (autospeed & mask)) - ops = &simple_port_ops; + ret = -EBUSY; + if (devm_request_region(&pdev->dev, io, 8, "pata_legacy") == NULL || + devm_request_region(&pdev->dev, io + 0x0206, 1, + "pata_legacy") == NULL) + goto fail; ret = -ENOMEM; + io_addr = devm_ioport_map(&pdev->dev, io, 8); + ctrl_addr = devm_ioport_map(&pdev->dev, io + 0x0206, 1); + if (!io_addr || !ctrl_addr) + goto fail; + if (controller->setup) + if (controller->setup(probe, ld) < 0) + goto fail; host = ata_host_alloc(&pdev->dev, 1); if (!host) goto fail; @@ -799,17 +1143,30 @@ static __init int legacy_init_one(int port, unsigned long io, unsigned long ctrl ata_std_ports(&ap->ioaddr); ap->private_data = ld; - ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, ctrl); + ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, io + 0x0206); - ret = ata_host_activate(host, irq, ata_interrupt, 0, &legacy_sht); + ret = ata_host_activate(host, probe->irq, ata_interrupt, 0, + &legacy_sht); if (ret) goto fail; - - legacy_host[nr_legacy_host++] = dev_get_drvdata(&pdev->dev); ld->platform_dev = pdev; - return 0; + /* Nothing found means we drop the port as its probably not there */ + + ret = -ENODEV; + ata_link_for_each_dev(dev, &ap->link) { + if (!ata_dev_absent(dev)) { + legacy_host[probe->slot] = host; + ld->platform_dev = pdev; + return 0; + } + } fail: + if (host) + ata_host_detach(host); + /* FIXME: use devm for this */ + if (ld->timing) + release_region(ld->timing, 2); platform_device_unregister(pdev); return ret; } @@ -820,13 +1177,15 @@ fail: * @master: set this if we find an ATA master * @master: set this if we find an ATA secondary * - * A small number of vendors implemented early PCI ATA interfaces on bridge logic - * without the ATA interface being PCI visible. Where we have a matching PCI driver - * we must skip the relevant device here. If we don't know about it then the legacy - * driver is the right driver anyway. + * A small number of vendors implemented early PCI ATA interfaces + * on bridge logic without the ATA interface being PCI visible. + * Where we have a matching PCI driver we must skip the relevant + * device here. If we don't know about it then the legacy driver + * is the right driver anyway. */ -static void legacy_check_special_cases(struct pci_dev *p, int *primary, int *secondary) +static void legacy_check_special_cases(struct pci_dev *p, int *primary, + int *secondary) { /* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */ if (p->vendor == 0x1078 && p->device == 0x0000) { @@ -842,7 +1201,8 @@ static void legacy_check_special_cases(struct pci_dev *p, int *primary, int *sec if (p->vendor == 0x8086 && p->device == 0x1234) { u16 r; pci_read_config_word(p, 0x6C, &r); - if (r & 0x8000) { /* ATA port enabled */ + if (r & 0x8000) { + /* ATA port enabled */ if (r & 0x4000) *secondary = 1; else @@ -852,6 +1212,117 @@ static void legacy_check_special_cases(struct pci_dev *p, int *primary, int *sec } } +static __init void probe_opti_vlb(void) +{ + /* If an OPTI 82C46X is present find out where the channels are */ + static const char *optis[4] = { + "3/463MV", "5MV", + "5MVA", "5MVB" + }; + u8 chans = 1; + u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6; + + opti82c46x = 3; /* Assume master and slave first */ + printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n", + optis[ctrl]); + if (ctrl == 3) + chans = (opti_syscfg(0x3F) & 0x20) ? 2 : 1; + ctrl = opti_syscfg(0xAC); + /* Check enabled and this port is the 465MV port. On the + MVB we may have two channels */ + if (ctrl & 8) { + if (chans == 2) { + legacy_probe_add(0x1F0, 14, OPTI46X, 0); + legacy_probe_add(0x170, 15, OPTI46X, 0); + } + if (ctrl & 4) + legacy_probe_add(0x170, 15, OPTI46X, 0); + else + legacy_probe_add(0x1F0, 14, OPTI46X, 0); + } else + legacy_probe_add(0x1F0, 14, OPTI46X, 0); +} + +static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port) +{ + static const unsigned long ide_port[2] = { 0x170, 0x1F0 }; + /* Check card type */ + if ((r & 0xF0) == 0xC0) { + /* QD6500: single channel */ + if (r & 8) { + /* Disabled ? */ + release_region(port, 2); + return; + } + legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01), + QDI6500, port); + } + if (((r & 0xF0) == 0xA0) || (r & 0xF0) == 0x50) { + /* QD6580: dual channel */ + if (!request_region(port + 2 , 2, "pata_qdi")) { + release_region(port, 2); + return; + } + res = inb(port + 3); + /* Single channel mode ? */ + if (res & 1) + legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01), + QDI6580, port); + else { /* Dual channel mode */ + legacy_probe_add(0x1F0, 14, QDI6580DP, port); + /* port + 0x02, r & 0x04 */ + legacy_probe_add(0x170, 15, QDI6580DP, port + 2); + } + } +} + +static __init void probe_qdi_vlb(void) +{ + unsigned long flags; + static const unsigned long qd_port[2] = { 0x30, 0xB0 }; + int i; + + /* + * Check each possible QD65xx base address + */ + + for (i = 0; i < 2; i++) { + unsigned long port = qd_port[i]; + u8 r, res; + + + if (request_region(port, 2, "pata_qdi")) { + /* Check for a card */ + local_irq_save(flags); + /* I have no h/w that needs this delay but it + is present in the historic code */ + r = inb(port); + udelay(1); + outb(0x19, port); + udelay(1); + res = inb(port); + udelay(1); + outb(r, port); + udelay(1); + local_irq_restore(flags); + + /* Fail */ + if (res == 0x19) { + release_region(port, 2); + continue; + } + /* Passes the presence test */ + r = inb(port + 1); + udelay(1); + /* Check port agrees with port set */ + if ((r & 2) >> 1 != i) { + release_region(port, 2); + continue; + } + qdi65_identify_port(r, res, port); + } + } +} /** * legacy_init - attach legacy interfaces @@ -869,15 +1340,17 @@ static __init int legacy_init(void) int ct = 0; int primary = 0; int secondary = 0; - int last_port = NR_HOST; + int pci_present = 0; + struct legacy_probe *pl = &probe_list[0]; + int slot = 0; struct pci_dev *p = NULL; for_each_pci_dev(p) { int r; - /* Check for any overlap of the system ATA mappings. Native mode controllers - stuck on these addresses or some devices in 'raid' mode won't be found by - the storage class test */ + /* Check for any overlap of the system ATA mappings. Native + mode controllers stuck on these addresses or some devices + in 'raid' mode won't be found by the storage class test */ for (r = 0; r < 6; r++) { if (pci_resource_start(p, r) == 0x1f0) primary = 1; @@ -887,49 +1360,37 @@ static __init int legacy_init(void) /* Check for special cases */ legacy_check_special_cases(p, &primary, &secondary); - /* If PCI bus is present then don't probe for tertiary legacy ports */ - if (probe_all == 0) - last_port = 2; + /* If PCI bus is present then don't probe for tertiary + legacy ports */ + pci_present = 1; } - /* If an OPTI 82C46X is present find out where the channels are */ - if (opti82c46x) { - static const char *optis[4] = { - "3/463MV", "5MV", - "5MVA", "5MVB" - }; - u8 chans = 1; - u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6; - - opti82c46x = 3; /* Assume master and slave first */ - printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n", optis[ctrl]); - if (ctrl == 3) - chans = (opti_syscfg(0x3F) & 0x20) ? 2 : 1; - ctrl = opti_syscfg(0xAC); - /* Check enabled and this port is the 465MV port. On the - MVB we may have two channels */ - if (ctrl & 8) { - if (ctrl & 4) - opti82c46x = 2; /* Slave */ - else - opti82c46x = 1; /* Master */ - if (chans == 2) - opti82c46x = 3; /* Master and Slave */ - } /* Slave only */ - else if (chans == 1) - opti82c46x = 1; + if (primary == 0 || all) + legacy_probe_add(0x1F0, 14, UNKNOWN, 0); + if (secondary == 0 || all) + legacy_probe_add(0x170, 15, UNKNOWN, 0); + + if (probe_all || !pci_present) { + /* ISA/VLB extra ports */ + legacy_probe_add(0x1E8, 11, UNKNOWN, 0); + legacy_probe_add(0x168, 10, UNKNOWN, 0); + legacy_probe_add(0x1E0, 8, UNKNOWN, 0); + legacy_probe_add(0x160, 12, UNKNOWN, 0); } - for (i = 0; i < last_port; i++) { - /* Skip primary if we have seen a PCI one */ - if (i == 0 && primary == 1) - continue; - /* Skip secondary if we have seen a PCI one */ - if (i == 1 && secondary == 1) + if (opti82c46x) + probe_opti_vlb(); + if (qdi) + probe_qdi_vlb(); + + + for (i = 0; i < NR_HOST; i++, pl++) { + if (pl->port == 0) continue; - if (legacy_init_one(i, legacy_port[i], - legacy_port[i] + 0x0206, - legacy_irq[i]) == 0) + if (pl->type == UNKNOWN) + pl->type = probe_chip_type(pl); + pl->slot = slot++; + if (legacy_init_one(pl) == 0) ct++; } if (ct != 0) @@ -943,7 +1404,6 @@ static __exit void legacy_exit(void) for (i = 0; i < nr_legacy_host; i++) { struct legacy_data *ld = &legacy_data[i]; - ata_host_detach(legacy_host[i]); platform_device_unregister(ld->platform_dev); if (ld->timing) @@ -962,9 +1422,9 @@ module_param(ht6560a, int, 0); module_param(ht6560b, int, 0); module_param(opti82c611a, int, 0); module_param(opti82c46x, int, 0); +module_param(qdi, int, 0); module_param(pio_mask, int, 0); module_param(iordy_mask, int, 0); module_init(legacy_init); module_exit(legacy_exit); - -- cgit v1.2.3-59-g8ed1b From cadb7345d92628d46cccd3765cc15cb9cd6abccf Mon Sep 17 00:00:00 2001 From: "akpm@linux-foundation.org" Date: Tue, 15 Jan 2008 16:01:52 -0800 Subject: [libata] Prefer SCSI_SENSE_BUFFERSIZE to sizeof() Cc: James Bottomley Cc: Jeff Garzik Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- drivers/ata/libata-scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 15a4c8a20358..989b7755af3d 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2342,7 +2342,7 @@ static void atapi_request_sense(struct ata_queued_cmd *qc) ata_qc_reinit(qc); /* setup sg table and init transfer direction */ - sg_init_one(&qc->sgent, cmd->sense_buffer, sizeof(cmd->sense_buffer)); + sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); ata_sg_init(qc, &qc->sgent, 1); qc->dma_dir = DMA_FROM_DEVICE; -- cgit v1.2.3-59-g8ed1b From 4e6b79fa61091a0ed9b0af0f573cc257772cd88d Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 18 Jan 2008 18:36:28 +0900 Subject: libata: factor out ata_pci_activate_sff_host() from ata_pci_one() Factor out ata_pci_activate_sff_host() from ata_pci_one(). This does about the same thing as ata_host_activate() but needs to be separate because SFF controllers use different and multiple IRQs in legacy mode. This will be used to make SFF LLD initialization more flexible. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 1 + drivers/ata/libata-sff.c | 187 +++++++++++++++++++++++++--------------------- include/linux/libata.h | 3 + 3 files changed, 107 insertions(+), 84 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 8c82193b077e..ce803d18e96a 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -7629,6 +7629,7 @@ EXPORT_SYMBOL_GPL(pci_test_config_bits); EXPORT_SYMBOL_GPL(ata_pci_init_sff_host); EXPORT_SYMBOL_GPL(ata_pci_init_bmdma); EXPORT_SYMBOL_GPL(ata_pci_prepare_sff_host); +EXPORT_SYMBOL_GPL(ata_pci_activate_sff_host); EXPORT_SYMBOL_GPL(ata_pci_init_one); EXPORT_SYMBOL_GPL(ata_pci_remove_one); #ifdef CONFIG_PM diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 97dd8f2796b7..60cd4b179766 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -713,6 +713,99 @@ int ata_pci_prepare_sff_host(struct pci_dev *pdev, return rc; } +/** + * ata_pci_activate_sff_host - start SFF host, request IRQ and register it + * @host: target SFF ATA host + * @irq_handler: irq_handler used when requesting IRQ(s) + * @sht: scsi_host_template to use when registering the host + * + * This is the counterpart of ata_host_activate() for SFF ATA + * hosts. This separate helper is necessary because SFF hosts + * use two separate interrupts in legacy mode. + * + * LOCKING: + * Inherited from calling layer (may sleep). + * + * RETURNS: + * 0 on success, -errno otherwise. + */ +int ata_pci_activate_sff_host(struct ata_host *host, + irq_handler_t irq_handler, + struct scsi_host_template *sht) +{ + struct device *dev = host->dev; + struct pci_dev *pdev = to_pci_dev(dev); + const char *drv_name = dev_driver_string(host->dev); + int legacy_mode = 0, rc; + + rc = ata_host_start(host); + if (rc) + return rc; + + if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) { + u8 tmp8, mask; + + /* TODO: What if one channel is in native mode ... */ + pci_read_config_byte(pdev, PCI_CLASS_PROG, &tmp8); + mask = (1 << 2) | (1 << 0); + if ((tmp8 & mask) != mask) + legacy_mode = 1; +#if defined(CONFIG_NO_ATA_LEGACY) + /* Some platforms with PCI limits cannot address compat + port space. In that case we punt if their firmware has + left a device in compatibility mode */ + if (legacy_mode) { + printk(KERN_ERR "ata: Compatibility mode ATA is not supported on this platform, skipping.\n"); + return -EOPNOTSUPP; + } +#endif + } + + if (!devres_open_group(dev, NULL, GFP_KERNEL)) + return -ENOMEM; + + if (!legacy_mode && pdev->irq) { + rc = devm_request_irq(dev, pdev->irq, irq_handler, + IRQF_SHARED, drv_name, host); + if (rc) + goto out; + + ata_port_desc(host->ports[0], "irq %d", pdev->irq); + ata_port_desc(host->ports[1], "irq %d", pdev->irq); + } else if (legacy_mode) { + if (!ata_port_is_dummy(host->ports[0])) { + rc = devm_request_irq(dev, ATA_PRIMARY_IRQ(pdev), + irq_handler, IRQF_SHARED, + drv_name, host); + if (rc) + goto out; + + ata_port_desc(host->ports[0], "irq %d", + ATA_PRIMARY_IRQ(pdev)); + } + + if (!ata_port_is_dummy(host->ports[1])) { + rc = devm_request_irq(dev, ATA_SECONDARY_IRQ(pdev), + irq_handler, IRQF_SHARED, + drv_name, host); + if (rc) + goto out; + + ata_port_desc(host->ports[1], "irq %d", + ATA_SECONDARY_IRQ(pdev)); + } + } + + rc = ata_host_register(host, sht); + out: + if (rc == 0) + devres_remove_group(dev, NULL); + else + devres_release_group(dev, NULL); + + return rc; +} + /** * ata_pci_init_one - Initialize/register PCI IDE host controller * @pdev: Controller to be initialized @@ -742,9 +835,6 @@ int ata_pci_init_one(struct pci_dev *pdev, struct device *dev = &pdev->dev; const struct ata_port_info *pi = NULL; struct ata_host *host = NULL; - const char *drv_name = dev_driver_string(&pdev->dev); - u8 mask; - int legacy_mode = 0; int i, rc; DPRINTK("ENTER\n"); @@ -766,95 +856,24 @@ int ata_pci_init_one(struct pci_dev *pdev, if (!devres_open_group(dev, NULL, GFP_KERNEL)) return -ENOMEM; - /* FIXME: Really for ATA it isn't safe because the device may be - multi-purpose and we want to leave it alone if it was already - enabled. Secondly for shared use as Arjan says we want refcounting - - Checking dev->is_enabled is insufficient as this is not set at - boot for the primary video which is BIOS enabled - */ - rc = pcim_enable_device(pdev); if (rc) - goto err_out; + goto out; - if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) { - u8 tmp8; - - /* TODO: What if one channel is in native mode ... */ - pci_read_config_byte(pdev, PCI_CLASS_PROG, &tmp8); - mask = (1 << 2) | (1 << 0); - if ((tmp8 & mask) != mask) - legacy_mode = 1; -#if defined(CONFIG_NO_ATA_LEGACY) - /* Some platforms with PCI limits cannot address compat - port space. In that case we punt if their firmware has - left a device in compatibility mode */ - if (legacy_mode) { - printk(KERN_ERR "ata: Compatibility mode ATA is not supported on this platform, skipping.\n"); - rc = -EOPNOTSUPP; - goto err_out; - } -#endif - } - - /* prepare host */ + /* prepare and activate SFF host */ rc = ata_pci_prepare_sff_host(pdev, ppi, &host); if (rc) - goto err_out; + goto out; pci_set_master(pdev); + rc = ata_pci_activate_sff_host(host, pi->port_ops->irq_handler, + pi->sht); + out: + if (rc == 0) + devres_remove_group(&pdev->dev, NULL); + else + devres_release_group(&pdev->dev, NULL); - /* start host and request IRQ */ - rc = ata_host_start(host); - if (rc) - goto err_out; - - if (!legacy_mode && pdev->irq) { - /* We may have no IRQ assigned in which case we can poll. This - shouldn't happen on a sane system but robustness is cheap - in this case */ - rc = devm_request_irq(dev, pdev->irq, pi->port_ops->irq_handler, - IRQF_SHARED, drv_name, host); - if (rc) - goto err_out; - - ata_port_desc(host->ports[0], "irq %d", pdev->irq); - ata_port_desc(host->ports[1], "irq %d", pdev->irq); - } else if (legacy_mode) { - if (!ata_port_is_dummy(host->ports[0])) { - rc = devm_request_irq(dev, ATA_PRIMARY_IRQ(pdev), - pi->port_ops->irq_handler, - IRQF_SHARED, drv_name, host); - if (rc) - goto err_out; - - ata_port_desc(host->ports[0], "irq %d", - ATA_PRIMARY_IRQ(pdev)); - } - - if (!ata_port_is_dummy(host->ports[1])) { - rc = devm_request_irq(dev, ATA_SECONDARY_IRQ(pdev), - pi->port_ops->irq_handler, - IRQF_SHARED, drv_name, host); - if (rc) - goto err_out; - - ata_port_desc(host->ports[1], "irq %d", - ATA_SECONDARY_IRQ(pdev)); - } - } - - /* register */ - rc = ata_host_register(host, pi->sht); - if (rc) - goto err_out; - - devres_remove_group(dev, NULL); - return 0; - -err_out: - devres_release_group(dev, NULL); return rc; } diff --git a/include/linux/libata.h b/include/linux/libata.h index ccb055636f37..4374c4277780 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1033,6 +1033,9 @@ extern int ata_pci_init_bmdma(struct ata_host *host); extern int ata_pci_prepare_sff_host(struct pci_dev *pdev, const struct ata_port_info * const * ppi, struct ata_host **r_host); +extern int ata_pci_activate_sff_host(struct ata_host *host, + irq_handler_t irq_handler, + struct scsi_host_template *sht); extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); extern unsigned long ata_pci_default_filter(struct ata_device *dev, unsigned long xfer_mask); -- cgit v1.2.3-59-g8ed1b From 8b09f0da0f873698a7e8b329dfb7b10fd42d5cdf Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 18 Jan 2008 18:36:29 +0900 Subject: ata_piix: convert to prepare - activate initialization ata_piix requires more configuration during initialization than most other SFF compliant controllers and one-go initialzation with ata_pci_one() is too rigid. This patch converts ata_piix to use two step prepare - activate initialization used by other more advanced controllers. This conversion brings the happy side effect of enabling PCI device before accessing PCI configuration registers. Other than that, there shouldn't be any behavior change. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/ata_piix.c | 79 +++++++++++++++++++++++--------------------------- 1 file changed, 37 insertions(+), 42 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index 3183b3f38e49..024e6d52eab2 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -316,7 +316,6 @@ static const struct ata_port_operations piix_pata_ops = { .post_internal_cmd = ata_bmdma_post_internal_cmd, .cable_detect = ata_cable_40wire, - .irq_handler = ata_interrupt, .irq_clear = ata_bmdma_irq_clear, .irq_on = ata_irq_on, @@ -348,7 +347,6 @@ static const struct ata_port_operations ich_pata_ops = { .post_internal_cmd = ata_bmdma_post_internal_cmd, .cable_detect = ich_pata_cable_detect, - .irq_handler = ata_interrupt, .irq_clear = ata_bmdma_irq_clear, .irq_on = ata_irq_on, @@ -375,7 +373,6 @@ static const struct ata_port_operations piix_sata_ops = { .error_handler = ata_bmdma_error_handler, .post_internal_cmd = ata_bmdma_post_internal_cmd, - .irq_handler = ata_interrupt, .irq_clear = ata_bmdma_irq_clear, .irq_on = ata_irq_on, @@ -521,7 +518,6 @@ static const struct piix_map_db *piix_map_db_table[] = { static struct ata_port_info piix_port_info[] = { [piix_pata_mwdma] = /* PIIX3 MWDMA only */ { - .sht = &piix_sht, .flags = PIIX_PATA_FLAGS, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */ @@ -530,7 +526,6 @@ static struct ata_port_info piix_port_info[] = { [piix_pata_33] = /* PIIX4 at 33MHz */ { - .sht = &piix_sht, .flags = PIIX_PATA_FLAGS, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */ @@ -540,7 +535,6 @@ static struct ata_port_info piix_port_info[] = { [ich_pata_33] = /* ICH0 - ICH at 33Mhz*/ { - .sht = &piix_sht, .flags = PIIX_PATA_FLAGS, .pio_mask = 0x1f, /* pio 0-4 */ .mwdma_mask = 0x06, /* Check: maybe 0x07 */ @@ -550,7 +544,6 @@ static struct ata_port_info piix_port_info[] = { [ich_pata_66] = /* ICH controllers up to 66MHz */ { - .sht = &piix_sht, .flags = PIIX_PATA_FLAGS, .pio_mask = 0x1f, /* pio 0-4 */ .mwdma_mask = 0x06, /* MWDMA0 is broken on chip */ @@ -560,7 +553,6 @@ static struct ata_port_info piix_port_info[] = { [ich_pata_100] = { - .sht = &piix_sht, .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x06, /* mwdma1-2 */ @@ -570,7 +562,6 @@ static struct ata_port_info piix_port_info[] = { [ich5_sata] = { - .sht = &piix_sht, .flags = PIIX_SATA_FLAGS, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ @@ -580,7 +571,6 @@ static struct ata_port_info piix_port_info[] = { [ich6_sata] = { - .sht = &piix_sht, .flags = PIIX_SATA_FLAGS, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ @@ -590,7 +580,6 @@ static struct ata_port_info piix_port_info[] = { [ich6_sata_ahci] = { - .sht = &piix_sht, .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ @@ -600,7 +589,6 @@ static struct ata_port_info piix_port_info[] = { [ich6m_sata_ahci] = { - .sht = &piix_sht, .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ @@ -610,7 +598,6 @@ static struct ata_port_info piix_port_info[] = { [ich8_sata_ahci] = { - .sht = &piix_sht, .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ @@ -620,7 +607,6 @@ static struct ata_port_info piix_port_info[] = { [ich8_2port_sata] = { - .sht = &piix_sht, .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ @@ -630,7 +616,6 @@ static struct ata_port_info piix_port_info[] = { [tolapai_sata_ahci] = { - .sht = &piix_sht, .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ @@ -640,7 +625,6 @@ static struct ata_port_info piix_port_info[] = { [ich8m_apple_sata_ahci] = { - .sht = &piix_sht, .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ @@ -1256,10 +1240,10 @@ static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev) return no_piix_dma; } -static void __devinit piix_init_pcs(struct pci_dev *pdev, - struct ata_port_info *pinfo, +static void __devinit piix_init_pcs(struct ata_host *host, const struct piix_map_db *map_db) { + struct pci_dev *pdev = to_pci_dev(host->dev); u16 pcs, new_pcs; pci_read_config_word(pdev, ICH5_PCS, &pcs); @@ -1273,11 +1257,10 @@ static void __devinit piix_init_pcs(struct pci_dev *pdev, } } -static void __devinit piix_init_sata_map(struct pci_dev *pdev, - struct ata_port_info *pinfo, - const struct piix_map_db *map_db) +static const int *__devinit piix_init_sata_map(struct pci_dev *pdev, + struct ata_port_info *pinfo, + const struct piix_map_db *map_db) { - struct piix_host_priv *hpriv = pinfo[0].private_data; const int *map; int i, invalid_map = 0; u8 map_value; @@ -1301,7 +1284,6 @@ static void __devinit piix_init_sata_map(struct pci_dev *pdev, case IDE: WARN_ON((i & 1) || map[i + 1] != IDE); pinfo[i / 2] = piix_port_info[ich_pata_100]; - pinfo[i / 2].private_data = hpriv; i++; printk(" IDE IDE"); break; @@ -1319,7 +1301,7 @@ static void __devinit piix_init_sata_map(struct pci_dev *pdev, dev_printk(KERN_ERR, &pdev->dev, "invalid MAP value %u\n", map_value); - hpriv->map = map; + return map; } static void piix_iocfg_bit18_quirk(struct pci_dev *pdev) @@ -1378,8 +1360,10 @@ static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) struct device *dev = &pdev->dev; struct ata_port_info port_info[2]; const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] }; - struct piix_host_priv *hpriv; unsigned long port_flags; + struct ata_host *host; + struct piix_host_priv *hpriv; + int rc; if (!printed_version++) dev_printk(KERN_DEBUG, &pdev->dev, @@ -1389,17 +1373,31 @@ static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) if (!in_module_init) return -ENODEV; + port_info[0] = piix_port_info[ent->driver_data]; + port_info[1] = piix_port_info[ent->driver_data]; + + port_flags = port_info[0].flags; + + /* enable device and prepare host */ + rc = pcim_enable_device(pdev); + if (rc) + return rc; + + /* SATA map init can change port_info, do it before prepping host */ hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL); if (!hpriv) return -ENOMEM; - port_info[0] = piix_port_info[ent->driver_data]; - port_info[1] = piix_port_info[ent->driver_data]; - port_info[0].private_data = hpriv; - port_info[1].private_data = hpriv; + if (port_flags & ATA_FLAG_SATA) + hpriv->map = piix_init_sata_map(pdev, port_info, + piix_map_db_table[ent->driver_data]); - port_flags = port_info[0].flags; + rc = ata_pci_prepare_sff_host(pdev, ppi, &host); + if (rc) + return rc; + host->private_data = hpriv; + /* initialize controller */ if (port_flags & PIIX_FLAG_AHCI) { u8 tmp; pci_read_config_byte(pdev, PIIX_SCC, &tmp); @@ -1410,13 +1408,8 @@ static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) } } - /* Initialize SATA map */ - if (port_flags & ATA_FLAG_SATA) { - piix_init_sata_map(pdev, port_info, - piix_map_db_table[ent->driver_data]); - piix_init_pcs(pdev, port_info, - piix_map_db_table[ent->driver_data]); - } + if (port_flags & ATA_FLAG_SATA) + piix_init_pcs(host, piix_map_db_table[ent->driver_data]); /* apply IOCFG bit18 quirk */ piix_iocfg_bit18_quirk(pdev); @@ -1434,12 +1427,14 @@ static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) /* This writes into the master table but it does not really matter for this errata as we will apply it to all the PIIX devices on the board */ - port_info[0].mwdma_mask = 0; - port_info[0].udma_mask = 0; - port_info[1].mwdma_mask = 0; - port_info[1].udma_mask = 0; + host->ports[0]->mwdma_mask = 0; + host->ports[0]->udma_mask = 0; + host->ports[1]->mwdma_mask = 0; + host->ports[1]->udma_mask = 0; } - return ata_pci_init_one(pdev, ppi); + + pci_set_master(pdev); + return ata_pci_activate_sff_host(host, ata_interrupt, &piix_sht); } static int __init piix_init(void) -- cgit v1.2.3-59-g8ed1b From c729072459446885c5c200137de1db32da5db4dc Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 18 Jan 2008 18:36:30 +0900 Subject: ata_piix: implement SIDPR SCR access For ICH8, SCRs can be accessed using index and data register pair located at BAR 5. This patch implements support for it such that PHY status, errors and hardreset are available for those controllers. This is the only case where two devices on a PATA channel have access to SCRs and creates a unique problem of mapping two SCRs to one link. Note that this is different from PMP case in that they aren't quite separate links - e.g. softreset resets both devices. This problem is worked around by merging the SCR values. To upper layer, it looks like there is a single link with one set of SCRs but with two devices. This works well enough for PHY event, error reporting and hardreset. Supporting hardreset is important because in rare cases SATA devices fail to recover without it after PHY errors. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/ata_piix.c | 251 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 247 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index 024e6d52eab2..a65c8ae5c461 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -101,9 +101,14 @@ enum { ICH5_PMR = 0x90, /* port mapping register */ ICH5_PCS = 0x92, /* port control and status */ PIIX_SCC = 0x0A, /* sub-class code register */ + PIIX_SIDPR_BAR = 5, + PIIX_SIDPR_LEN = 16, + PIIX_SIDPR_IDX = 0, + PIIX_SIDPR_DATA = 4, PIIX_FLAG_AHCI = (1 << 27), /* AHCI possible */ PIIX_FLAG_CHECKINTR = (1 << 28), /* make sure PCI INTx enabled */ + PIIX_FLAG_SIDPR = (1 << 29), /* SATA idx/data pair regs */ PIIX_PATA_FLAGS = ATA_FLAG_SLAVE_POSS, PIIX_SATA_FLAGS = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR, @@ -152,6 +157,7 @@ struct piix_map_db { struct piix_host_priv { const int *map; + void __iomem *sidpr; }; static int piix_init_one(struct pci_dev *pdev, @@ -162,6 +168,9 @@ static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev); static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev); static int ich_pata_cable_detect(struct ata_port *ap); static u8 piix_vmw_bmdma_status(struct ata_port *ap); +static int piix_sidpr_scr_read(struct ata_port *ap, unsigned int reg, u32 *val); +static int piix_sidpr_scr_write(struct ata_port *ap, unsigned int reg, u32 val); +static void piix_sidpr_error_handler(struct ata_port *ap); #ifdef CONFIG_PM static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); static int piix_pci_device_resume(struct pci_dev *pdev); @@ -411,6 +420,35 @@ static const struct ata_port_operations piix_vmw_ops = { .port_start = ata_port_start, }; +static const struct ata_port_operations piix_sidpr_sata_ops = { + .tf_load = ata_tf_load, + .tf_read = ata_tf_read, + .check_status = ata_check_status, + .exec_command = ata_exec_command, + .dev_select = ata_std_dev_select, + + .bmdma_setup = ata_bmdma_setup, + .bmdma_start = ata_bmdma_start, + .bmdma_stop = ata_bmdma_stop, + .bmdma_status = ata_bmdma_status, + .qc_prep = ata_qc_prep, + .qc_issue = ata_qc_issue_prot, + .data_xfer = ata_data_xfer, + + .scr_read = piix_sidpr_scr_read, + .scr_write = piix_sidpr_scr_write, + + .freeze = ata_bmdma_freeze, + .thaw = ata_bmdma_thaw, + .error_handler = piix_sidpr_error_handler, + .post_internal_cmd = ata_bmdma_post_internal_cmd, + + .irq_clear = ata_bmdma_irq_clear, + .irq_on = ata_irq_on, + + .port_start = ata_port_start, +}; + static const struct piix_map_db ich5_map_db = { .mask = 0x7, .port_enable = 0x3, @@ -598,7 +636,8 @@ static struct ata_port_info piix_port_info[] = { [ich8_sata_ahci] = { - .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, + .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI | + PIIX_FLAG_SIDPR, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = ATA_UDMA6, @@ -607,7 +646,8 @@ static struct ata_port_info piix_port_info[] = { [ich8_2port_sata] = { - .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, + .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI | + PIIX_FLAG_SIDPR, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = ATA_UDMA6, @@ -625,7 +665,8 @@ static struct ata_port_info piix_port_info[] = { [ich8m_apple_sata_ahci] = { - .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI, + .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI | + PIIX_FLAG_SIDPR, .pio_mask = 0x1f, /* pio0-4 */ .mwdma_mask = 0x07, /* mwdma0-2 */ .udma_mask = ATA_UDMA6, @@ -974,6 +1015,180 @@ static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev) do_pata_set_dmamode(ap, adev, 1); } +/* + * Serial ATA Index/Data Pair Superset Registers access + * + * Beginning from ICH8, there's a sane way to access SCRs using index + * and data register pair located at BAR5. This creates an + * interesting problem of mapping two SCRs to one port. + * + * Although they have separate SCRs, the master and slave aren't + * independent enough to be treated as separate links - e.g. softreset + * resets both. Also, there's no protocol defined for hard resetting + * singled device sharing the virtual port (no defined way to acquire + * device signature). This is worked around by merging the SCR values + * into one sensible value and requesting follow-up SRST after + * hardreset. + * + * SCR merging is perfomed in nibbles which is the unit contents in + * SCRs are organized. If two values are equal, the value is used. + * When they differ, merge table which lists precedence of possible + * values is consulted and the first match or the last entry when + * nothing matches is used. When there's no merge table for the + * specific nibble, value from the first port is used. + */ +static const int piix_sidx_map[] = { + [SCR_STATUS] = 0, + [SCR_ERROR] = 2, + [SCR_CONTROL] = 1, +}; + +static void piix_sidpr_sel(struct ata_device *dev, unsigned int reg) +{ + struct ata_port *ap = dev->link->ap; + struct piix_host_priv *hpriv = ap->host->private_data; + + iowrite32(((ap->port_no * 2 + dev->devno) << 8) | piix_sidx_map[reg], + hpriv->sidpr + PIIX_SIDPR_IDX); +} + +static int piix_sidpr_read(struct ata_device *dev, unsigned int reg) +{ + struct piix_host_priv *hpriv = dev->link->ap->host->private_data; + + piix_sidpr_sel(dev, reg); + return ioread32(hpriv->sidpr + PIIX_SIDPR_DATA); +} + +static void piix_sidpr_write(struct ata_device *dev, unsigned int reg, u32 val) +{ + struct piix_host_priv *hpriv = dev->link->ap->host->private_data; + + piix_sidpr_sel(dev, reg); + iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA); +} + +u32 piix_merge_scr(u32 val0, u32 val1, const int * const *merge_tbl) +{ + u32 val = 0; + int i, mi; + + for (i = 0, mi = 0; i < 32 / 4; i++) { + u8 c0 = (val0 >> (i * 4)) & 0xf; + u8 c1 = (val1 >> (i * 4)) & 0xf; + u8 merged = c0; + const int *cur; + + /* if no merge preference, assume the first value */ + cur = merge_tbl[mi]; + if (!cur) + goto done; + mi++; + + /* if two values equal, use it */ + if (c0 == c1) + goto done; + + /* choose the first match or the last from the merge table */ + while (*cur != -1) { + if (c0 == *cur || c1 == *cur) + break; + cur++; + } + if (*cur == -1) + cur--; + merged = *cur; + done: + val |= merged << (i * 4); + } + + return val; +} + +static int piix_sidpr_scr_read(struct ata_port *ap, unsigned int reg, u32 *val) +{ + const int * const sstatus_merge_tbl[] = { + /* DET */ (const int []){ 1, 3, 0, 4, 3, -1 }, + /* SPD */ (const int []){ 2, 1, 0, -1 }, + /* IPM */ (const int []){ 6, 2, 1, 0, -1 }, + NULL, + }; + const int * const scontrol_merge_tbl[] = { + /* DET */ (const int []){ 1, 0, 4, 0, -1 }, + /* SPD */ (const int []){ 0, 2, 1, 0, -1 }, + /* IPM */ (const int []){ 0, 1, 2, 3, 0, -1 }, + NULL, + }; + u32 v0, v1; + + if (reg >= ARRAY_SIZE(piix_sidx_map)) + return -EINVAL; + + if (!(ap->flags & ATA_FLAG_SLAVE_POSS)) { + *val = piix_sidpr_read(&ap->link.device[0], reg); + return 0; + } + + v0 = piix_sidpr_read(&ap->link.device[0], reg); + v1 = piix_sidpr_read(&ap->link.device[1], reg); + + switch (reg) { + case SCR_STATUS: + *val = piix_merge_scr(v0, v1, sstatus_merge_tbl); + break; + case SCR_ERROR: + *val = v0 | v1; + break; + case SCR_CONTROL: + *val = piix_merge_scr(v0, v1, scontrol_merge_tbl); + break; + } + + return 0; +} + +static int piix_sidpr_scr_write(struct ata_port *ap, unsigned int reg, u32 val) +{ + if (reg >= ARRAY_SIZE(piix_sidx_map)) + return -EINVAL; + + piix_sidpr_write(&ap->link.device[0], reg, val); + + if (ap->flags & ATA_FLAG_SLAVE_POSS) + piix_sidpr_write(&ap->link.device[1], reg, val); + + return 0; +} + +static int piix_sidpr_hardreset(struct ata_link *link, unsigned int *class, + unsigned long deadline) +{ + const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context); + int rc; + + /* do hardreset */ + rc = sata_link_hardreset(link, timing, deadline); + if (rc) { + ata_link_printk(link, KERN_ERR, + "COMRESET failed (errno=%d)\n", rc); + return rc; + } + + /* TODO: phy layer with polling, timeouts, etc. */ + if (ata_link_offline(link)) { + *class = ATA_DEV_NONE; + return 0; + } + + return -EAGAIN; +} + +static void piix_sidpr_error_handler(struct ata_port *ap) +{ + ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, + piix_sidpr_hardreset, ata_std_postreset); +} + #ifdef CONFIG_PM static int piix_broken_suspend(void) { @@ -1304,6 +1519,32 @@ static const int *__devinit piix_init_sata_map(struct pci_dev *pdev, return map; } +static void __devinit piix_init_sidpr(struct ata_host *host) +{ + struct pci_dev *pdev = to_pci_dev(host->dev); + struct piix_host_priv *hpriv = host->private_data; + int i; + + /* check for availability */ + for (i = 0; i < 4; i++) + if (hpriv->map[i] == IDE) + return; + + if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR)) + return; + + if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 || + pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN) + return; + + if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME)) + return; + + hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR]; + host->ports[0]->ops = &piix_sidpr_sata_ops; + host->ports[1]->ops = &piix_sidpr_sata_ops; +} + static void piix_iocfg_bit18_quirk(struct pci_dev *pdev) { static const struct dmi_system_id sysids[] = { @@ -1408,8 +1649,10 @@ static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) } } - if (port_flags & ATA_FLAG_SATA) + if (port_flags & ATA_FLAG_SATA) { piix_init_pcs(host, piix_map_db_table[ent->driver_data]); + piix_init_sidpr(host); + } /* apply IOCFG bit18 quirk */ piix_iocfg_bit18_quirk(pdev); -- cgit v1.2.3-59-g8ed1b From b710a1f4b34438b624e9c6c2dc8bcf54b0b0ba27 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sat, 5 Jan 2008 23:11:57 +0900 Subject: ahci: factor out AHCI enabling and enable AHCI before reading CAP Factor out AHCI enabling into ahci_enable_ahci() and enabling AHCI before reading CAP in ahci_save_initial_config() as the spec requires enabling AHCI mode before accessing any other registers. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/ahci.c | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 49761bc12cf2..6f089b899a1a 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -597,6 +597,20 @@ static inline void __iomem *ahci_port_base(struct ata_port *ap) return __ahci_port_base(ap->host, ap->port_no); } +static void ahci_enable_ahci(void __iomem *mmio) +{ + u32 tmp; + + /* turn on AHCI_EN */ + tmp = readl(mmio + HOST_CTL); + if (!(tmp & HOST_AHCI_EN)) { + tmp |= HOST_AHCI_EN; + writel(tmp, mmio + HOST_CTL); + tmp = readl(mmio + HOST_CTL); /* flush && sanity check */ + WARN_ON(!(tmp & HOST_AHCI_EN)); + } +} + /** * ahci_save_initial_config - Save and fixup initial config values * @pdev: target PCI device @@ -619,6 +633,9 @@ static void ahci_save_initial_config(struct pci_dev *pdev, u32 cap, port_map; int i; + /* make sure AHCI mode is enabled before accessing CAP */ + ahci_enable_ahci(mmio); + /* Values prefixed with saved_ are written back to host after * reset. Values without are used for driver operation. */ @@ -1043,13 +1060,10 @@ static int ahci_reset_controller(struct ata_host *host) /* we must be in AHCI mode, before using anything * AHCI-specific, such as HOST_RESET. */ - tmp = readl(mmio + HOST_CTL); - if (!(tmp & HOST_AHCI_EN)) { - tmp |= HOST_AHCI_EN; - writel(tmp, mmio + HOST_CTL); - } + ahci_enable_ahci(mmio); /* global controller reset */ + tmp = readl(mmio + HOST_CTL); if ((tmp & HOST_RESET) == 0) { writel(tmp | HOST_RESET, mmio + HOST_CTL); readl(mmio + HOST_CTL); /* flush */ @@ -1068,8 +1082,7 @@ static int ahci_reset_controller(struct ata_host *host) } /* turn on AHCI mode */ - writel(HOST_AHCI_EN, mmio + HOST_CTL); - (void) readl(mmio + HOST_CTL); /* flush */ + ahci_enable_ahci(mmio); /* some registers might be cleared on reset. restore initial values */ ahci_restore_initial_config(host); -- cgit v1.2.3-59-g8ed1b From 75f9cafc2d24a1cf44d7c3f3e5b4f7a393afcf71 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 3 Jan 2008 01:21:14 +0900 Subject: libata: fix off-by-one in error categorization ATA_ECAT_DUBIOUS_BASE was too high by one and thus all DUBIOUS error categorizations were wrong. This passed test because only ATA_BUS and UNK_DEV were used during testing and the ones after them - ATA_BUS and an overflowed entry - behaved similarly. This patch fixes the problem by adding DUBIOUS_NONE category and use it as base. Signed-off-by: Tejun Heo Signed-off-by: Jeff Garzik --- drivers/ata/libata-eh.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 419552603a16..4e31071acc02 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -61,12 +61,11 @@ enum { ATA_ECAT_ATA_BUS = 1, ATA_ECAT_TOUT_HSM = 2, ATA_ECAT_UNK_DEV = 3, - ATA_ECAT_DUBIOUS_ATA_BUS = 4, - ATA_ECAT_DUBIOUS_TOUT_HSM = 5, - ATA_ECAT_DUBIOUS_UNK_DEV = 6, - ATA_ECAT_NR = 7, - - ATA_ECAT_DUBIOUS_BASE = ATA_ECAT_DUBIOUS_ATA_BUS, + ATA_ECAT_DUBIOUS_NONE = 4, + ATA_ECAT_DUBIOUS_ATA_BUS = 5, + ATA_ECAT_DUBIOUS_TOUT_HSM = 6, + ATA_ECAT_DUBIOUS_UNK_DEV = 7, + ATA_ECAT_NR = 8, }; /* Waiting in ->prereset can never be reliable. It's sometimes nice @@ -1499,7 +1498,7 @@ static int ata_eh_categorize_error(unsigned int eflags, unsigned int err_mask, *xfer_ok = 1; if (!*xfer_ok) - base = ATA_ECAT_DUBIOUS_BASE; + base = ATA_ECAT_DUBIOUS_NONE; if (err_mask & AC_ERR_ATA_BUS) return base + ATA_ECAT_ATA_BUS; -- cgit v1.2.3-59-g8ed1b From 0eaea364edec4132fe42ef33fe87edb15f00507b Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Sat, 19 Jan 2008 15:48:59 +0000 Subject: pata_mpc52xx: remove un-needed assignment ata_irq is always assigned so does not need to be initialised to zero. Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/pata_mpc52xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/pata_mpc52xx.c b/drivers/ata/pata_mpc52xx.c index 50c56e2814c1..dc401626cdb2 100644 --- a/drivers/ata/pata_mpc52xx.c +++ b/drivers/ata/pata_mpc52xx.c @@ -364,7 +364,7 @@ mpc52xx_ata_probe(struct of_device *op, const struct of_device_id *match) { unsigned int ipb_freq; struct resource res_mem; - int ata_irq = NO_IRQ; + int ata_irq; struct mpc52xx_ata __iomem *ata_regs; struct mpc52xx_ata_priv *priv; int rv; -- cgit v1.2.3-59-g8ed1b From 0f069788c32ea7af108c6032dfb0594cc718bde8 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Sat, 19 Jan 2008 15:52:56 +0000 Subject: pata_serverworks: Fix cable types and cosmetics Minor tidying up. Only real change is to return UNK not 80 wire when we don't know the cable type. This didn't use to matter but with Tejun's reworking of cable detection it may. Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/pata_serverworks.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/pata_serverworks.c b/drivers/ata/pata_serverworks.c index 8bed88873720..9c523fbf529e 100644 --- a/drivers/ata/pata_serverworks.c +++ b/drivers/ata/pata_serverworks.c @@ -41,7 +41,7 @@ #include #define DRV_NAME "pata_serverworks" -#define DRV_VERSION "0.4.2" +#define DRV_VERSION "0.4.3" #define SVWKS_CSB5_REVISION_NEW 0x92 /* min PCI_REVISION_ID for UDMA5 (A2.0) */ #define SVWKS_CSB6_REVISION 0xa0 /* min PCI_REVISION_ID for UDMA4 (A1.0) */ @@ -102,7 +102,7 @@ static int osb4_cable(struct ata_port *ap) { } /** - * csb4_cable - CSB5/6 cable detect + * csb_cable - CSB5/6 cable detect * @ap: ATA port to check * * Serverworks default arrangement is to use the drive side detection @@ -110,7 +110,7 @@ static int osb4_cable(struct ata_port *ap) { */ static int csb_cable(struct ata_port *ap) { - return ATA_CBL_PATA80; + return ATA_CBL_PATA_UNK; } struct sv_cable_table { @@ -231,7 +231,6 @@ static unsigned long serverworks_csb_filter(struct ata_device *adev, unsigned lo return ata_pci_default_filter(adev, mask); } - /** * serverworks_set_piomode - set initial PIO mode data * @ap: ATA interface @@ -243,7 +242,7 @@ static unsigned long serverworks_csb_filter(struct ata_device *adev, unsigned lo static void serverworks_set_piomode(struct ata_port *ap, struct ata_device *adev) { static const u8 pio_mode[] = { 0x5d, 0x47, 0x34, 0x22, 0x20 }; - int offset = 1 + (2 * ap->port_no) - adev->devno; + int offset = 1 + 2 * ap->port_no - adev->devno; int devbits = (2 * ap->port_no + adev->devno) * 4; u16 csb5_pio; struct pci_dev *pdev = to_pci_dev(ap->host->dev); -- cgit v1.2.3-59-g8ed1b From 3e9b90265e9ab191c8f7e072fd0abf05824d2f1b Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Sat, 19 Jan 2008 15:53:55 +0000 Subject: pata_winbond: error return If no device is active return an error not zero. Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/pata_winbond.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/pata_winbond.c b/drivers/ata/pata_winbond.c index 17a9d0713232..99c92eda217b 100644 --- a/drivers/ata/pata_winbond.c +++ b/drivers/ata/pata_winbond.c @@ -195,7 +195,7 @@ static __init int winbond_init_one(unsigned long port) reg = winbond_readcfg(port, 0x81); if (!(reg & 0x03)) /* Disabled */ - return 0; + return -ENODEV; for (i = 0; i < 2 ; i ++) { unsigned long cmd_port = 0x1F0 - (0x80 * i); -- cgit v1.2.3-59-g8ed1b From 5e8f757cb2e0f67bf43f71d5180a8bf0ab3484eb Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Sat, 19 Jan 2008 16:07:58 +0000 Subject: ata_generic: Cenatek support Not much to do here. It's an ata memory as disk. Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/ata_generic.c | 7 ++++++- include/linux/pci_ids.h | 3 +++ 2 files changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/ata_generic.c b/drivers/ata/ata_generic.c index d11a4f1fe86a..20534202fc79 100644 --- a/drivers/ata/ata_generic.c +++ b/drivers/ata/ata_generic.c @@ -26,7 +26,7 @@ #include #define DRV_NAME "ata_generic" -#define DRV_VERSION "0.2.13" +#define DRV_VERSION "0.2.15" /* * A generic parallel ATA driver using libata @@ -48,11 +48,15 @@ static int generic_set_mode(struct ata_link *link, struct ata_device **unused) struct ata_port *ap = link->ap; int dma_enabled = 0; struct ata_device *dev; + struct pci_dev *pdev = to_pci_dev(ap->host->dev); /* Bits 5 and 6 indicate if DMA is active on master/slave */ if (ap->ioaddr.bmdma_addr) dma_enabled = ioread8(ap->ioaddr.bmdma_addr + ATA_DMA_STATUS); + if (pdev->vendor == PCI_VENDOR_ID_CENATEK) + dma_enabled = 0xFF; + ata_link_for_each_dev(dev, link) { if (!ata_dev_enabled(dev)) continue; @@ -201,6 +205,7 @@ static struct pci_device_id ata_generic[] = { { PCI_DEVICE(PCI_VENDOR_ID_HINT, PCI_DEVICE_ID_HINT_VXPROII_IDE), }, { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C561), }, { PCI_DEVICE(PCI_VENDOR_ID_OPTI, PCI_DEVICE_ID_OPTI_82C558), }, + { PCI_DEVICE(PCI_VENDOR_ID_CENATEK,PCI_DEVICE_ID_CENATEK_IDE), }, { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO), }, { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), }, { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2), }, diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 7f2215139e9a..1fbd0256e86b 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2066,6 +2066,9 @@ #define PCI_VENDOR_ID_NETCELL 0x169c #define PCI_DEVICE_ID_REVOLUTION 0x0044 +#define PCI_VENDOR_ID_CENATEK 0x16CA +#define PCI_DEVICE_ID_CENATEK_IDE 0x0001 + #define PCI_VENDOR_ID_VITESSE 0x1725 #define PCI_DEVICE_ID_VITESSE_VSC7174 0x7174 -- cgit v1.2.3-59-g8ed1b From b832548773b0cd98216534caa31b9ed7607c4e76 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Sat, 19 Jan 2008 15:47:23 +0000 Subject: pata_legacy: Merge winbond support This puts winbond VLB in with the other ISA/VLB support and means we can lose pata_winbond.c. With all the VLB/ISA probe in one space (and out of the core libata) this makes legacy probing work sanely. Also switch to devm_ for resource handling on the ports post probe Signed-off-by: Alan Cox Signed-off-by: Jeff Garzik --- drivers/ata/pata_legacy.c | 178 +++++++++++++++++++++++++++++++++++++--------- 1 file changed, 144 insertions(+), 34 deletions(-) (limited to 'drivers') diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c index c4a939b506c9..333dc15f8ccf 100644 --- a/drivers/ata/pata_legacy.c +++ b/drivers/ata/pata_legacy.c @@ -28,7 +28,6 @@ * * Unsupported but docs exist: * Appian/Adaptec AIC25VL01/Cirrus Logic PD7220 - * Winbond W83759A * * This driver handles legacy (that is "ISA/VLB side") IDE ports found * on PC class systems. There are three hybrid devices that are exceptions @@ -36,7 +35,7 @@ * the MPIIX where the tuning is PCI side but the IDE is "ISA side". * * Specific support is included for the ht6560a/ht6560b/opti82c611a/ - * opti82c465mv/promise 20230c/20630 + * opti82c465mv/promise 20230c/20630/winbond83759A * * Use the autospeed and pio_mask options with: * Appian ADI/2 aka CLPD7220 or AIC25VL01. @@ -47,9 +46,6 @@ * For now use autospeed and pio_mask as above with the W83759A. This may * change. * - * TODO - * Merge existing pata_qdi driver - * */ #include @@ -64,7 +60,7 @@ #include #define DRV_NAME "pata_legacy" -#define DRV_VERSION "0.5.5" +#define DRV_VERSION "0.6.5" #define NR_HOST 6 @@ -92,6 +88,7 @@ enum controller { QDI6500 = 7, QDI6580 = 8, QDI6580DP = 9, /* Dual channel mode is different */ + W83759A = 10, UNKNOWN = -1 }; @@ -111,7 +108,8 @@ struct legacy_controller { struct ata_port_operations *ops; unsigned int pio_mask; unsigned int flags; - int (*setup)(struct legacy_probe *probe, struct legacy_data *data); + int (*setup)(struct platform_device *, struct legacy_probe *probe, + struct legacy_data *data); }; static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 }; @@ -128,6 +126,8 @@ static int ht6560b; /* HT 6560A on primary 1, second 2, both 3 */ static int opti82c611a; /* Opti82c611A on primary 1, sec 2, both 3 */ static int opti82c46x; /* Opti 82c465MV present(pri/sec autodetect) */ static int qdi; /* Set to probe QDI controllers */ +static int winbond; /* Set to probe Winbond controllers, + give I/O port if non stdanard */ static int autospeed; /* Chip present which snoops speed changes */ static int pio_mask = 0x1F; /* PIO range for autospeed devices */ static int iordy_mask = 0xFFFFFFFF; /* Use iordy if available */ @@ -891,9 +891,7 @@ static unsigned int qdi_qc_issue_prot(struct ata_queued_cmd *qc) return ata_qc_issue_prot(qc); } -/* For the 6580 can we flip the FIFO on/off at this point ? */ - -static unsigned int qdi_data_xfer(struct ata_device *adev, unsigned char *buf, +static unsigned int vlb32_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int rw) { struct ata_port *ap = adev->link->ap; @@ -922,6 +920,15 @@ static unsigned int qdi_data_xfer(struct ata_device *adev, unsigned char *buf, return ata_data_xfer(adev, buf, buflen, rw); } +static int qdi_port(struct platform_device *dev, + struct legacy_probe *lp, struct legacy_data *ld) +{ + if (devm_request_region(&dev->dev, lp->private, 4, "qdi") == NULL) + return -EBUSY; + ld->timing = lp->private; + return 0; +} + static struct ata_port_operations qdi6500_port_ops = { .set_piomode = qdi6500_set_piomode, @@ -940,7 +947,7 @@ static struct ata_port_operations qdi6500_port_ops = { .qc_prep = ata_qc_prep, .qc_issue = qdi_qc_issue_prot, - .data_xfer = qdi_data_xfer, + .data_xfer = vlb32_data_xfer, .irq_handler = ata_interrupt, .irq_clear = ata_bmdma_irq_clear, @@ -967,7 +974,7 @@ static struct ata_port_operations qdi6580_port_ops = { .qc_prep = ata_qc_prep, .qc_issue = ata_qc_issue_prot, - .data_xfer = qdi_data_xfer, + .data_xfer = vlb32_data_xfer, .irq_handler = ata_interrupt, .irq_clear = ata_bmdma_irq_clear, @@ -994,7 +1001,7 @@ static struct ata_port_operations qdi6580dp_port_ops = { .qc_prep = ata_qc_prep, .qc_issue = qdi_qc_issue_prot, - .data_xfer = qdi_data_xfer, + .data_xfer = vlb32_data_xfer, .irq_handler = ata_interrupt, .irq_clear = ata_bmdma_irq_clear, @@ -1003,6 +1010,97 @@ static struct ata_port_operations qdi6580dp_port_ops = { .port_start = ata_sff_port_start, }; +static DEFINE_SPINLOCK(winbond_lock); + +static void winbond_writecfg(unsigned long port, u8 reg, u8 val) +{ + unsigned long flags; + spin_lock_irqsave(&winbond_lock, flags); + outb(reg, port + 0x01); + outb(val, port + 0x02); + spin_unlock_irqrestore(&winbond_lock, flags); +} + +static u8 winbond_readcfg(unsigned long port, u8 reg) +{ + u8 val; + + unsigned long flags; + spin_lock_irqsave(&winbond_lock, flags); + outb(reg, port + 0x01); + val = inb(port + 0x02); + spin_unlock_irqrestore(&winbond_lock, flags); + + return val; +} + +static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev) +{ + struct ata_timing t; + struct legacy_data *winbond = ap->host->private_data; + int active, recovery; + u8 reg; + int timing = 0x88 + (ap->port_no * 4) + (adev->devno * 2); + + reg = winbond_readcfg(winbond->timing, 0x81); + + /* Get the timing data in cycles */ + if (reg & 0x40) /* Fast VLB bus, assume 50MHz */ + ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000); + else + ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000); + + active = (FIT(t.active, 3, 17) - 1) & 0x0F; + recovery = (FIT(t.recover, 1, 15) + 1) & 0x0F; + timing = (active << 4) | recovery; + winbond_writecfg(winbond->timing, timing, reg); + + /* Load the setup timing */ + + reg = 0x35; + if (adev->class != ATA_DEV_ATA) + reg |= 0x08; /* FIFO off */ + if (!ata_pio_need_iordy(adev)) + reg |= 0x02; /* IORDY off */ + reg |= (FIT(t.setup, 0, 3) << 6); + winbond_writecfg(winbond->timing, timing + 1, reg); +} + +static int winbond_port(struct platform_device *dev, + struct legacy_probe *lp, struct legacy_data *ld) +{ + if (devm_request_region(&dev->dev, lp->private, 4, "winbond") == NULL) + return -EBUSY; + ld->timing = lp->private; + return 0; +} + +static struct ata_port_operations winbond_port_ops = { + .set_piomode = winbond_set_piomode, + + .tf_load = ata_tf_load, + .tf_read = ata_tf_read, + .check_status = ata_check_status, + .exec_command = ata_exec_command, + .dev_select = ata_std_dev_select, + + .freeze = ata_bmdma_freeze, + .thaw = ata_bmdma_thaw, + .error_handler = ata_bmdma_error_handler, + .post_internal_cmd = ata_bmdma_post_internal_cmd, + .cable_detect = ata_cable_40wire, + + .qc_prep = ata_qc_prep, + .qc_issue = ata_qc_issue_prot, + + .data_xfer = vlb32_data_xfer, + + .irq_clear = ata_bmdma_irq_clear, + .irq_on = ata_irq_on, + + .port_start = ata_sff_port_start, +}; + static struct legacy_controller controllers[] = { {"BIOS", &legacy_port_ops, 0x1F, ATA_FLAG_NO_IORDY, NULL }, @@ -1019,11 +1117,13 @@ static struct legacy_controller controllers[] = { {"OPTI82C46X", &opti82c46x_port_ops, 0x0F, 0 , NULL }, {"QDI6500", &qdi6500_port_ops, 0x07, - ATA_FLAG_NO_IORDY, NULL }, + ATA_FLAG_NO_IORDY, qdi_port }, {"QDI6580", &qdi6580_port_ops, 0x1F, - 0 , NULL }, + 0 , qdi_port }, {"QDI6580DP", &qdi6580dp_port_ops, 0x1F, - 0 , NULL } + 0 , qdi_port }, + {"W83759A", &winbond_port_ops, 0x1F, + 0 , winbond_port } }; /** @@ -1034,10 +1134,26 @@ static struct legacy_controller controllers[] = { * check if the controller appears to be driveless at this point. */ -static int probe_chip_type(struct legacy_probe *probe) +static __init int probe_chip_type(struct legacy_probe *probe) { int mask = 1 << probe->slot; + if (winbond && (probe->port == 0x1F0 || probe->port == 0x170)) { + u8 reg = winbond_readcfg(winbond, 0x81); + reg |= 0x80; /* jumpered mode off */ + winbond_writecfg(winbond, 0x81, reg); + reg = winbond_readcfg(winbond, 0x83); + reg |= 0xF0; /* local control */ + winbond_writecfg(winbond, 0x83, reg); + reg = winbond_readcfg(winbond, 0x85); + reg |= 0xF0; /* programmable timing */ + winbond_writecfg(winbond, 0x85, reg); + + reg = winbond_readcfg(winbond, 0x81); + + if (reg & mask) + return W83759A; + } if (probe->port == 0x1F0) { unsigned long flags; local_irq_save(flags); @@ -1127,7 +1243,7 @@ static __init int legacy_init_one(struct legacy_probe *probe) if (!io_addr || !ctrl_addr) goto fail; if (controller->setup) - if (controller->setup(probe, ld) < 0) + if (controller->setup(pdev, probe, ld) < 0) goto fail; host = ata_host_alloc(&pdev->dev, 1); if (!host) @@ -1141,7 +1257,7 @@ static __init int legacy_init_one(struct legacy_probe *probe) ap->ioaddr.altstatus_addr = ctrl_addr; ap->ioaddr.ctl_addr = ctrl_addr; ata_std_ports(&ap->ioaddr); - ap->private_data = ld; + ap->host->private_data = ld; ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, io + 0x0206); @@ -1164,9 +1280,6 @@ static __init int legacy_init_one(struct legacy_probe *probe) fail: if (host) ata_host_detach(host); - /* FIXME: use devm for this */ - if (ld->timing) - release_region(ld->timing, 2); platform_device_unregister(pdev); return ret; } @@ -1184,7 +1297,7 @@ fail: * is the right driver anyway. */ -static void legacy_check_special_cases(struct pci_dev *p, int *primary, +static void __init legacy_check_special_cases(struct pci_dev *p, int *primary, int *secondary) { /* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */ @@ -1249,11 +1362,9 @@ static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port) /* Check card type */ if ((r & 0xF0) == 0xC0) { /* QD6500: single channel */ - if (r & 8) { + if (r & 8) /* Disabled ? */ - release_region(port, 2); return; - } legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01), QDI6500, port); } @@ -1273,6 +1384,7 @@ static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port) /* port + 0x02, r & 0x04 */ legacy_probe_add(0x170, 15, QDI6580DP, port + 2); } + release_region(port + 2, 2); } } @@ -1315,11 +1427,9 @@ static __init void probe_qdi_vlb(void) r = inb(port + 1); udelay(1); /* Check port agrees with port set */ - if ((r & 2) >> 1 != i) { - release_region(port, 2); - continue; - } - qdi65_identify_port(r, res, port); + if ((r & 2) >> 1 == i) + qdi65_identify_port(r, res, port); + release_region(port, 2); } } } @@ -1365,6 +1475,9 @@ static __init int legacy_init(void) pci_present = 1; } + if (winbond == 1) + winbond = 0x130; /* Default port, alt is 1B0 */ + if (primary == 0 || all) legacy_probe_add(0x1F0, 14, UNKNOWN, 0); if (secondary == 0 || all) @@ -1383,7 +1496,6 @@ static __init int legacy_init(void) if (qdi) probe_qdi_vlb(); - for (i = 0; i < NR_HOST; i++, pl++) { if (pl->port == 0) continue; @@ -1406,8 +1518,6 @@ static __exit void legacy_exit(void) struct legacy_data *ld = &legacy_data[i]; ata_host_detach(legacy_host[i]); platform_device_unregister(ld->platform_dev); - if (ld->timing) - release_region(ld->timing, 2); } } -- cgit v1.2.3-59-g8ed1b From 7ccd720da3857c21ea893448aaf73620cfe1d27e Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Thu, 17 Jan 2008 11:56:24 -0600 Subject: [libata] Prefer SCSI_SENSE_BUFFERSIZE to sizeof() Signed-off-by: Jeff Garzik --- drivers/ata/libata-scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 989b7755af3d..3fd08201bef4 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2331,7 +2331,7 @@ static void atapi_request_sense(struct ata_queued_cmd *qc) DPRINTK("ATAPI request sense\n"); /* FIXME: is this needed? */ - memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); + memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); ap->ops->tf_read(ap, &qc->tf); -- cgit v1.2.3-59-g8ed1b From a984f58dd97f22f5113700322fed311a0ee29947 Mon Sep 17 00:00:00 2001 From: "akpm@linux-foundation.org" Date: Thu, 17 Jan 2008 11:33:52 -0800 Subject: fix drivers/ata/sata_fsl.c double-decl drivers/ata/sata_fsl.c: In function 'sata_fsl_fill_sg': drivers/ata/sata_fsl.c:337: error: redeclaration of 'si' with no linkage drivers/ata/sata_fsl.c:326: error: previous declaration of 'si' was here Reported-by: Olof Johansson Cc: Jeff Garzik Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- drivers/ata/sata_fsl.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c index d041709dee1a..922d7b2efba8 100644 --- a/drivers/ata/sata_fsl.c +++ b/drivers/ata/sata_fsl.c @@ -323,7 +323,6 @@ static unsigned int sata_fsl_fill_sg(struct ata_queued_cmd *qc, void *cmd_desc, struct scatterlist *sg; unsigned int num_prde = 0; u32 ttl_dwords = 0; - unsigned int si; /* * NOTE : direct & indirect prdt's are contigiously allocated -- cgit v1.2.3-59-g8ed1b