diff options
Diffstat (limited to 'include/linux/libata.h')
| -rw-r--r-- | include/linux/libata.h | 195 |
1 files changed, 136 insertions, 59 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index 6cd9ba63563b..0ba3af7a1236 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1,23 +1,26 @@ /* - Copyright 2003-2004 Red Hat, Inc. All rights reserved. - Copyright 2003-2004 Jeff Garzik - - The contents of this file are subject to the Open - Software License version 1.1 that can be found at - http://www.opensource.org/licenses/osl-1.1.txt and is included herein - by reference. - - Alternatively, the contents of this file may be used under the terms - of the GNU General Public License version 2 (the "GPL") as distributed - in the kernel source COPYING file, in which case the provisions of - the GPL are applicable instead of the above. If you wish to allow - the use of your version of this file only under the terms of the - GPL and not to allow others to use your version of this file under - the OSL, indicate your decision by deleting the provisions above and - replace them with the notice and other provisions required by the GPL. - If you do not delete the provisions above, a recipient may use your - version of this file under either the OSL or the GPL. - + * Copyright 2003-2005 Red Hat, Inc. All rights reserved. + * Copyright 2003-2005 Jeff Garzik + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + * libata documentation is available via 'make {ps|pdf}docs', + * as Documentation/DocBook/libata.* + * */ #ifndef __LINUX_LIBATA_H__ @@ -37,7 +40,6 @@ #undef ATA_VERBOSE_DEBUG /* yet more debugging output */ #undef ATA_IRQ_TRAP /* define to ack screaming irqs */ #undef ATA_NDEBUG /* define to disable quick runtime checks */ -#undef ATA_ENABLE_ATAPI /* define to enable ATAPI support */ #undef ATA_ENABLE_PATA /* define to enable PATA support in some * low-level drivers */ #undef ATAPI_ENABLE_DMADIR /* enables ATAPI DMADIR bridge support */ @@ -89,12 +91,13 @@ enum { ATA_SHT_EMULATED = 1, ATA_SHT_CMD_PER_LUN = 1, ATA_SHT_THIS_ID = -1, - ATA_SHT_USE_CLUSTERING = 0, + ATA_SHT_USE_CLUSTERING = 1, /* struct ata_device stuff */ ATA_DFLAG_LBA48 = (1 << 0), /* device supports LBA48 */ ATA_DFLAG_PIO = (1 << 1), /* device currently in PIO mode */ ATA_DFLAG_LOCK_SECTORS = (1 << 2), /* don't adjust max_sectors */ + ATA_DFLAG_LBA = (1 << 3), /* device supports LBA */ ATA_DEV_UNKNOWN = 0, /* unknown device */ ATA_DEV_ATA = 1, /* ATA device */ @@ -113,6 +116,8 @@ enum { ATA_FLAG_MMIO = (1 << 6), /* use MMIO, not PIO */ ATA_FLAG_SATA_RESET = (1 << 7), /* use COMRESET */ ATA_FLAG_PIO_DMA = (1 << 8), /* PIO cmds via DMA */ + ATA_FLAG_NOINTR = (1 << 9), /* FIXME: Remove this once + * proper HSM is in place. */ ATA_QCFLAG_ACTIVE = (1 << 1), /* cmd not yet ack'd to scsi lyer */ ATA_QCFLAG_SG = (1 << 3), /* have s/g table? */ @@ -150,17 +155,28 @@ enum { ATA_SHIFT_UDMA = 0, ATA_SHIFT_MWDMA = 8, ATA_SHIFT_PIO = 11, + + /* Masks for port functions */ + ATA_PORT_PRIMARY = (1 << 0), + ATA_PORT_SECONDARY = (1 << 1), +}; + +enum hsm_task_states { + HSM_ST_UNKNOWN, + HSM_ST_IDLE, + HSM_ST_POLL, + HSM_ST_TMOUT, + HSM_ST, + HSM_ST_LAST, + HSM_ST_LAST_POLL, + HSM_ST_ERR, }; -enum pio_task_states { - PIO_ST_UNKNOWN, - PIO_ST_IDLE, - PIO_ST_POLL, - PIO_ST_TMOUT, - PIO_ST, - PIO_ST_LAST, - PIO_ST_LAST_POLL, - PIO_ST_ERR, +enum ata_completion_errors { + AC_ERR_OTHER = (1 << 0), + AC_ERR_DEV = (1 << 1), + AC_ERR_ATA_BUS = (1 << 2), + AC_ERR_HOST_BUS = (1 << 3), }; /* forward declarations */ @@ -170,7 +186,7 @@ struct ata_port; struct ata_queued_cmd; /* typedefs */ -typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc, u8 drv_stat); +typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc, unsigned int err_mask); struct ata_ioports { unsigned long cmd_addr; @@ -193,7 +209,7 @@ struct ata_ioports { struct ata_probe_ent { struct list_head node; struct device *dev; - struct ata_port_operations *port_ops; + const struct ata_port_operations *port_ops; Scsi_Host_Template *sht; struct ata_ioports port[ATA_MAX_PORTS]; unsigned int n_ports; @@ -216,7 +232,7 @@ struct ata_host_set { void __iomem *mmio_base; unsigned int n_ports; void *private_data; - struct ata_port_operations *ops; + const struct ata_port_operations *ops; struct ata_port * ports[0]; }; @@ -274,15 +290,18 @@ struct ata_device { u8 xfer_mode; unsigned int xfer_shift; /* ATA_SHIFT_xxx */ - /* cache info about current transfer mode */ - u8 xfer_protocol; /* taskfile xfer protocol */ - u8 read_cmd; /* opcode to use on read */ - u8 write_cmd; /* opcode to use on write */ + unsigned int multi_count; /* sectors count for + READ/WRITE MULTIPLE */ + + /* for CHS addressing */ + u16 cylinders; /* Number of cylinders */ + u16 heads; /* Number of heads */ + u16 sectors; /* Number of sectors per track */ }; struct ata_port { struct Scsi_Host *host; /* our co-allocated scsi host */ - struct ata_port_operations *ops; + const struct ata_port_operations *ops; unsigned long flags; /* ATA_FLAG_xxx */ unsigned int id; /* unique id req'd by scsi midlyr */ unsigned int port_no; /* unique port #; from zero */ @@ -315,7 +334,7 @@ struct ata_port { struct work_struct packet_task; struct work_struct pio_task; - unsigned int pio_task_state; + unsigned int hsm_task_state; unsigned long pio_task_timeout; void *private_data; @@ -329,13 +348,12 @@ struct ata_port_operations { void (*set_piomode) (struct ata_port *, struct ata_device *); void (*set_dmamode) (struct ata_port *, struct ata_device *); - void (*tf_load) (struct ata_port *ap, struct ata_taskfile *tf); + void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf); void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf); - void (*exec_command)(struct ata_port *ap, struct ata_taskfile *tf); + void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf); u8 (*check_status)(struct ata_port *ap); u8 (*check_altstatus)(struct ata_port *ap); - u8 (*check_err)(struct ata_port *ap); void (*dev_select)(struct ata_port *ap, unsigned int device); void (*phy_reset) (struct ata_port *ap); @@ -363,7 +381,7 @@ struct ata_port_operations { void (*host_stop) (struct ata_host_set *host_set); - void (*bmdma_stop) (struct ata_port *ap); + void (*bmdma_stop) (struct ata_queued_cmd *qc); u8 (*bmdma_status) (struct ata_port *ap); }; @@ -373,9 +391,22 @@ struct ata_port_info { unsigned long pio_mask; unsigned long mwdma_mask; unsigned long udma_mask; - struct ata_port_operations *port_ops; + const struct ata_port_operations *port_ops; +}; + +struct ata_timing { + unsigned short mode; /* ATA mode */ + unsigned short setup; /* t1 */ + unsigned short act8b; /* t2 for 8-bit I/O */ + unsigned short rec8b; /* t2i for 8-bit I/O */ + unsigned short cyc8b; /* t0 for 8-bit I/O */ + unsigned short active; /* t2 or tD */ + unsigned short recover; /* t2i or tK */ + unsigned short cycle; /* t0 */ + unsigned short udma; /* t2CYCTYP/2 */ }; +#define FIT(v,vmin,vmax) max_t(short,min_t(short,v,vmax),vmin) extern void ata_port_probe(struct ata_port *); extern void __sata_phy_reset(struct ata_port *ap); @@ -388,26 +419,28 @@ extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_i unsigned int n_ports); extern void ata_pci_remove_one (struct pci_dev *pdev); #endif /* CONFIG_PCI */ -extern int ata_device_add(struct ata_probe_ent *ent); +extern int ata_device_add(const struct ata_probe_ent *ent); +extern void ata_host_set_remove(struct ata_host_set *host_set); extern int ata_scsi_detect(Scsi_Host_Template *sht); extern int ata_scsi_ioctl(struct scsi_device *dev, int cmd, void __user *arg); extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); extern int ata_scsi_error(struct Scsi_Host *host); extern int ata_scsi_release(struct Scsi_Host *host); extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc); +extern int ata_ratelimit(void); + /* * Default driver ops implementations */ -extern void ata_tf_load(struct ata_port *ap, struct ata_taskfile *tf); +extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf); extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf); -extern void ata_tf_to_fis(struct ata_taskfile *tf, u8 *fis, u8 pmp); -extern void ata_tf_from_fis(u8 *fis, struct ata_taskfile *tf); +extern void ata_tf_to_fis(const struct ata_taskfile *tf, u8 *fis, u8 pmp); +extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); 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); extern u8 ata_altstatus(struct ata_port *ap); -extern u8 ata_chk_err(struct ata_port *ap); -extern void ata_exec_command(struct ata_port *ap, struct ata_taskfile *tf); +extern void ata_exec_command(struct ata_port *ap, const struct ata_taskfile *tf); extern int ata_port_start (struct ata_port *ap); extern void ata_port_stop (struct ata_port *ap); extern void ata_host_stop (struct ata_host_set *host_set); @@ -418,16 +451,16 @@ 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(struct ata_taskfile *tf); -extern void ata_dev_id_string(u16 *id, unsigned char *s, +extern unsigned int ata_dev_classify(const struct ata_taskfile *tf); +extern void ata_dev_id_string(const u16 *id, unsigned char *s, unsigned int ofs, unsigned int len); extern void ata_dev_config(struct ata_port *ap, unsigned int i); 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_port *ap); +extern void ata_bmdma_stop(struct ata_queued_cmd *qc); extern u8 ata_bmdma_status(struct ata_port *ap); extern void ata_bmdma_irq_clear(struct ata_port *ap); -extern void ata_qc_complete(struct ata_queued_cmd *qc, u8 drv_stat); +extern void ata_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask); extern void ata_eng_timeout(struct ata_port *ap); extern void ata_scsi_simulate(u16 *id, struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)); @@ -436,6 +469,32 @@ extern int ata_std_bios_param(struct scsi_device *sdev, sector_t capacity, int geom[]); extern int ata_scsi_slave_config(struct scsi_device *sdev); +/* + * Timing helpers + */ +extern int ata_timing_compute(struct ata_device *, unsigned short, + struct ata_timing *, int, int); +extern void ata_timing_merge(const struct ata_timing *, + const struct ata_timing *, struct ata_timing *, + unsigned int); + +enum { + ATA_TIMING_SETUP = (1 << 0), + ATA_TIMING_ACT8B = (1 << 1), + ATA_TIMING_REC8B = (1 << 2), + ATA_TIMING_CYC8B = (1 << 3), + ATA_TIMING_8BIT = ATA_TIMING_ACT8B | ATA_TIMING_REC8B | + ATA_TIMING_CYC8B, + ATA_TIMING_ACTIVE = (1 << 4), + ATA_TIMING_RECOVER = (1 << 5), + ATA_TIMING_CYCLE = (1 << 6), + ATA_TIMING_UDMA = (1 << 7), + ATA_TIMING_ALL = ATA_TIMING_SETUP | ATA_TIMING_ACT8B | + ATA_TIMING_REC8B | ATA_TIMING_CYC8B | + ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER | + ATA_TIMING_CYCLE | ATA_TIMING_UDMA, +}; + #ifdef CONFIG_PCI struct pci_bits { @@ -445,9 +504,10 @@ struct pci_bits { unsigned long val; }; +extern void ata_pci_host_stop (struct ata_host_set *host_set); extern struct ata_probe_ent * -ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port); -extern int pci_test_config_bits(struct pci_dev *pdev, struct pci_bits *bits); +ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int portmask); +extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits); #endif /* CONFIG_PCI */ @@ -457,7 +517,7 @@ static inline unsigned int ata_tag_valid(unsigned int tag) return (tag < ATA_MAX_QUEUE) ? 1 : 0; } -static inline unsigned int ata_dev_present(struct ata_device *dev) +static inline unsigned int ata_dev_present(const struct ata_device *dev) { return ((dev->class == ATA_DEV_ATA) || (dev->class == ATA_DEV_ATAPI)); @@ -644,7 +704,7 @@ static inline void scr_write(struct ata_port *ap, unsigned int reg, u32 val) ap->ops->scr_write(ap, reg, val); } -static inline void scr_write_flush(struct ata_port *ap, unsigned int reg, +static inline void scr_write_flush(struct ata_port *ap, unsigned int reg, u32 val) { ap->ops->scr_write(ap, reg, val); @@ -656,11 +716,28 @@ static inline unsigned int sata_dev_present(struct ata_port *ap) return ((scr_read(ap, SCR_STATUS) & 0xf) == 0x3) ? 1 : 0; } -static inline int ata_try_flush_cache(struct ata_device *dev) +static inline int ata_try_flush_cache(const struct ata_device *dev) { return ata_id_wcache_enabled(dev->id) || ata_id_has_flush(dev->id) || ata_id_has_flush_ext(dev->id); } +static inline unsigned int ac_err_mask(u8 status) +{ + if (status & ATA_BUSY) + return AC_ERR_ATA_BUS; + if (status & (ATA_ERR | ATA_DF)) + return AC_ERR_DEV; + return 0; +} + +static inline unsigned int __ac_err_mask(u8 status) +{ + unsigned int mask = ac_err_mask(status); + if (mask == 0) + return AC_ERR_OTHER; + return mask; +} + #endif /* __LINUX_LIBATA_H__ */ |