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Diffstat (limited to 'drivers/scsi/aha1542.c')
-rw-r--r--drivers/scsi/aha1542.c272
1 files changed, 154 insertions, 118 deletions
diff --git a/drivers/scsi/aha1542.c b/drivers/scsi/aha1542.c
index dc5667afeb27..552ca95157da 100644
--- a/drivers/scsi/aha1542.c
+++ b/drivers/scsi/aha1542.c
@@ -65,9 +65,12 @@ struct aha1542_hostdata {
dma_addr_t ccb_handle;
};
+#define AHA1542_MAX_SECTORS 16
+
struct aha1542_cmd {
- struct chain *chain;
- dma_addr_t chain_handle;
+ /* bounce buffer */
+ void *data_buffer;
+ dma_addr_t data_buffer_handle;
};
static inline void aha1542_intr_reset(u16 base)
@@ -119,8 +122,10 @@ static int aha1542_out(unsigned int base, u8 *buf, int len)
return 0;
}
-/* Only used at boot time, so we do not need to worry about latency as much
- here */
+/*
+ * Only used at boot time, so we do not need to worry about latency as much
+ * here
+ */
static int aha1542_in(unsigned int base, u8 *buf, int len, int timeout)
{
@@ -142,35 +147,43 @@ static int makecode(unsigned hosterr, unsigned scsierr)
break;
case 0x11: /* Selection time out-The initiator selection or target
- reselection was not complete within the SCSI Time out period */
+ * reselection was not complete within the SCSI Time out period
+ */
hosterr = DID_TIME_OUT;
break;
case 0x12: /* Data overrun/underrun-The target attempted to transfer more data
- than was allocated by the Data Length field or the sum of the
- Scatter / Gather Data Length fields. */
+ * than was allocated by the Data Length field or the sum of the
+ * Scatter / Gather Data Length fields.
+ */
case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */
case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was
- invalid. This usually indicates a software failure. */
+ * invalid. This usually indicates a software failure.
+ */
case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid.
- This usually indicates a software failure. */
+ * This usually indicates a software failure.
+ */
case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set
- of linked CCB's does not specify the same logical unit number as
- the first. */
+ * of linked CCB's does not specify the same logical unit number as
+ * the first.
+ */
case 0x18: /* Invalid Target Direction received from Host-The direction of a
- Target Mode CCB was invalid. */
+ * Target Mode CCB was invalid.
+ */
case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was
- received to service data transfer between the same target LUN
- and initiator SCSI ID in the same direction. */
+ * received to service data transfer between the same target LUN
+ * and initiator SCSI ID in the same direction.
+ */
case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero
- length segment or invalid segment list boundaries was received.
- A CCB parameter was invalid. */
+ * length segment or invalid segment list boundaries was received.
+ * A CCB parameter was invalid.
+ */
#ifdef DEBUG
printk("Aha1542: %x %x\n", hosterr, scsierr);
#endif
@@ -178,9 +191,10 @@ static int makecode(unsigned hosterr, unsigned scsierr)
break;
case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus
- phase sequence was requested by the target. The host adapter
- will generate a SCSI Reset Condition, notifying the host with
- a SCRD interrupt */
+ * phase sequence was requested by the target. The host adapter
+ * will generate a SCSI Reset Condition, notifying the host with
+ * a SCRD interrupt
+ */
hosterr = DID_RESET;
break;
default:
@@ -192,7 +206,6 @@ static int makecode(unsigned hosterr, unsigned scsierr)
static int aha1542_test_port(struct Scsi_Host *sh)
{
- u8 inquiry_result[4];
int i;
/* Quick and dirty test for presence of the card. */
@@ -216,15 +229,17 @@ static int aha1542_test_port(struct Scsi_Host *sh)
if (inb(INTRFLAGS(sh->io_port)) & INTRMASK)
return 0;
- /* Perform a host adapter inquiry instead so we do not need to set
- up the mailboxes ahead of time */
+ /*
+ * Perform a host adapter inquiry instead so we do not need to set
+ * up the mailboxes ahead of time
+ */
aha1542_outb(sh->io_port, CMD_INQUIRY);
for (i = 0; i < 4; i++) {
if (!wait_mask(STATUS(sh->io_port), DF, DF, 0, 0))
return 0;
- inquiry_result[i] = inb(DATA(sh->io_port));
+ (void)inb(DATA(sh->io_port));
}
/* Reading port should reset DF */
@@ -244,15 +259,19 @@ static int aha1542_test_port(struct Scsi_Host *sh)
static void aha1542_free_cmd(struct scsi_cmnd *cmd)
{
struct aha1542_cmd *acmd = scsi_cmd_priv(cmd);
- struct device *dev = cmd->device->host->dma_dev;
- size_t len = scsi_sg_count(cmd) * sizeof(struct chain);
- if (acmd->chain) {
- dma_unmap_single(dev, acmd->chain_handle, len, DMA_TO_DEVICE);
- kfree(acmd->chain);
+ if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
+ struct request *rq = scsi_cmd_to_rq(cmd);
+ void *buf = acmd->data_buffer;
+ struct req_iterator iter;
+ struct bio_vec bv;
+
+ rq_for_each_segment(bv, rq, iter) {
+ memcpy_to_bvec(&bv, buf);
+ buf += bv.bv_len;
+ }
}
- acmd->chain = NULL;
scsi_dma_unmap(cmd);
}
@@ -260,7 +279,6 @@ static irqreturn_t aha1542_interrupt(int irq, void *dev_id)
{
struct Scsi_Host *sh = dev_id;
struct aha1542_hostdata *aha1542 = shost_priv(sh);
- void (*my_done)(struct scsi_cmnd *) = NULL;
int errstatus, mbi, mbo, mbistatus;
int number_serviced;
unsigned long flags;
@@ -284,7 +302,7 @@ static irqreturn_t aha1542_interrupt(int irq, void *dev_id)
if (flag & SCRD)
printk("SCRD ");
printk("status %02x\n", inb(STATUS(sh->io_port)));
- };
+ }
#endif
number_serviced = 0;
@@ -292,10 +310,12 @@ static irqreturn_t aha1542_interrupt(int irq, void *dev_id)
while (1) {
flag = inb(INTRFLAGS(sh->io_port));
- /* Check for unusual interrupts. If any of these happen, we should
- probably do something special, but for now just printing a message
- is sufficient. A SCSI reset detected is something that we really
- need to deal with in some way. */
+ /*
+ * Check for unusual interrupts. If any of these happen, we should
+ * probably do something special, but for now just printing a message
+ * is sufficient. A SCSI reset detected is something that we really
+ * need to deal with in some way.
+ */
if (flag & ~MBIF) {
if (flag & MBOA)
printk("MBOF ");
@@ -324,7 +344,7 @@ static irqreturn_t aha1542_interrupt(int irq, void *dev_id)
if (!number_serviced)
shost_printk(KERN_WARNING, sh, "interrupt received, but no mail.\n");
return IRQ_HANDLED;
- };
+ }
mbo = (scsi2int(mb[mbi].ccbptr) - (unsigned long)aha1542->ccb_handle) / sizeof(struct ccb);
mbistatus = mb[mbi].status;
@@ -346,18 +366,19 @@ static irqreturn_t aha1542_interrupt(int irq, void *dev_id)
tmp_cmd = aha1542->int_cmds[mbo];
- if (!tmp_cmd || !tmp_cmd->scsi_done) {
+ if (!tmp_cmd) {
spin_unlock_irqrestore(sh->host_lock, flags);
shost_printk(KERN_WARNING, sh, "Unexpected interrupt\n");
shost_printk(KERN_WARNING, sh, "tarstat=%x, hastat=%x idlun=%x ccb#=%d\n", ccb[mbo].tarstat,
ccb[mbo].hastat, ccb[mbo].idlun, mbo);
return IRQ_HANDLED;
}
- my_done = tmp_cmd->scsi_done;
aha1542_free_cmd(tmp_cmd);
- /* Fetch the sense data, and tuck it away, in the required slot. The
- Adaptec automatically fetches it, and there is no guarantee that
- we will still have it in the cdb when we come back */
+ /*
+ * Fetch the sense data, and tuck it away, in the required slot. The
+ * Adaptec automatically fetches it, and there is no guarantee that
+ * we will still have it in the cdb when we come back
+ */
if (ccb[mbo].tarstat == 2)
memcpy(tmp_cmd->sense_buffer, &ccb[mbo].cdb[ccb[mbo].cdblen],
SCSI_SENSE_BUFFERSIZE);
@@ -383,10 +404,11 @@ static irqreturn_t aha1542_interrupt(int irq, void *dev_id)
#endif
tmp_cmd->result = errstatus;
aha1542->int_cmds[mbo] = NULL; /* This effectively frees up the mailbox slot, as
- far as queuecommand is concerned */
- my_done(tmp_cmd);
+ * far as queuecommand is concerned
+ */
+ scsi_done(tmp_cmd);
number_serviced++;
- };
+ }
}
static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
@@ -398,14 +420,14 @@ static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
u8 lun = cmd->device->lun;
unsigned long flags;
int bufflen = scsi_bufflen(cmd);
- int mbo, sg_count;
+ int mbo;
struct mailbox *mb = aha1542->mb;
struct ccb *ccb = aha1542->ccb;
if (*cmd->cmnd == REQUEST_SENSE) {
/* Don't do the command - we have the sense data already */
cmd->result = 0;
- cmd->scsi_done(cmd);
+ scsi_done(cmd);
return 0;
}
#ifdef DEBUG
@@ -420,21 +442,23 @@ static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
print_hex_dump_bytes("command: ", DUMP_PREFIX_NONE, cmd->cmnd, cmd->cmd_len);
}
#endif
- sg_count = scsi_dma_map(cmd);
- if (sg_count) {
- size_t len = sg_count * sizeof(struct chain);
-
- acmd->chain = kmalloc(len, GFP_DMA);
- if (!acmd->chain)
- goto out_unmap;
- acmd->chain_handle = dma_map_single(sh->dma_dev, acmd->chain,
- len, DMA_TO_DEVICE);
- if (dma_mapping_error(sh->dma_dev, acmd->chain_handle))
- goto out_free_chain;
+
+ if (cmd->sc_data_direction == DMA_TO_DEVICE) {
+ struct request *rq = scsi_cmd_to_rq(cmd);
+ void *buf = acmd->data_buffer;
+ struct req_iterator iter;
+ struct bio_vec bv;
+
+ rq_for_each_segment(bv, rq, iter) {
+ memcpy_from_bvec(buf, &bv);
+ buf += bv.bv_len;
+ }
}
- /* Use the outgoing mailboxes in a round-robin fashion, because this
- is how the host adapter will scan for them */
+ /*
+ * Use the outgoing mailboxes in a round-robin fashion, because this
+ * is how the host adapter will scan for them
+ */
spin_lock_irqsave(sh->host_lock, flags);
mbo = aha1542->aha1542_last_mbo_used + 1;
@@ -453,12 +477,13 @@ static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
panic("Unable to find empty mailbox for aha1542.\n");
aha1542->int_cmds[mbo] = cmd; /* This will effectively prevent someone else from
- screwing with this cdb. */
+ * screwing with this cdb.
+ */
aha1542->aha1542_last_mbo_used = mbo;
#ifdef DEBUG
- shost_printk(KERN_DEBUG, sh, "Sending command (%d %p)...", mbo, cmd->scsi_done);
+ shost_printk(KERN_DEBUG, sh, "Sending command (%d)...", mbo);
#endif
/* This gets trashed for some reason */
@@ -475,27 +500,12 @@ static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
direction = 16;
memcpy(ccb[mbo].cdb, cmd->cmnd, ccb[mbo].cdblen);
-
- if (bufflen) {
- struct scatterlist *sg;
- int i;
-
- ccb[mbo].op = 2; /* SCSI Initiator Command w/scatter-gather */
- scsi_for_each_sg(cmd, sg, sg_count, i) {
- any2scsi(acmd->chain[i].dataptr, sg_dma_address(sg));
- any2scsi(acmd->chain[i].datalen, sg_dma_len(sg));
- };
- any2scsi(ccb[mbo].datalen, sg_count * sizeof(struct chain));
- any2scsi(ccb[mbo].dataptr, acmd->chain_handle);
-#ifdef DEBUG
- shost_printk(KERN_DEBUG, sh, "cptr %p: ", acmd->chain);
- print_hex_dump_bytes("cptr: ", DUMP_PREFIX_NONE, acmd->chain, 18);
-#endif
- } else {
- ccb[mbo].op = 0; /* SCSI Initiator Command */
- any2scsi(ccb[mbo].datalen, 0);
+ ccb[mbo].op = 0; /* SCSI Initiator Command */
+ any2scsi(ccb[mbo].datalen, bufflen);
+ if (bufflen)
+ any2scsi(ccb[mbo].dataptr, acmd->data_buffer_handle);
+ else
any2scsi(ccb[mbo].dataptr, 0);
- };
ccb[mbo].idlun = (target & 7) << 5 | direction | (lun & 7); /*SCSI Target Id */
ccb[mbo].rsalen = 16;
ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0;
@@ -510,12 +520,6 @@ static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
spin_unlock_irqrestore(sh->host_lock, flags);
return 0;
-out_free_chain:
- kfree(acmd->chain);
- acmd->chain = NULL;
-out_unmap:
- scsi_dma_unmap(cmd);
- return SCSI_MLQUEUE_HOST_BUSY;
}
/* Initialize mailboxes */
@@ -530,7 +534,7 @@ static void setup_mailboxes(struct Scsi_Host *sh)
any2scsi(aha1542->mb[i].ccbptr,
aha1542->ccb_handle + i * sizeof(struct ccb));
aha1542->mb[AHA1542_MAILBOXES + i].status = 0;
- };
+ }
aha1542_intr_reset(sh->io_port); /* reset interrupts, so they don't block */
any2scsi(mb_cmd + 2, aha1542->mb_handle);
if (aha1542_out(sh->io_port, mb_cmd, 5))
@@ -545,7 +549,7 @@ static int aha1542_getconfig(struct Scsi_Host *sh)
i = inb(STATUS(sh->io_port));
if (i & DF) {
i = inb(DATA(sh->io_port));
- };
+ }
aha1542_outb(sh->io_port, CMD_RETCONF);
aha1542_in(sh->io_port, inquiry_result, 3, 0);
if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0))
@@ -565,14 +569,16 @@ static int aha1542_getconfig(struct Scsi_Host *sh)
sh->dma_channel = 0;
break;
case 0:
- /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel.
- Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */
+ /*
+ * This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel.
+ * Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this.
+ */
sh->dma_channel = 0xFF;
break;
default:
shost_printk(KERN_ERR, sh, "Unable to determine DMA channel.\n");
return -1;
- };
+ }
switch (inquiry_result[1]) {
case 0x40:
sh->irq = 15;
@@ -595,13 +601,15 @@ static int aha1542_getconfig(struct Scsi_Host *sh)
default:
shost_printk(KERN_ERR, sh, "Unable to determine IRQ level.\n");
return -1;
- };
+ }
sh->this_id = inquiry_result[2] & 7;
return 0;
}
-/* This function should only be called for 1542C boards - we can detect
- the special firmware settings and unlock the board */
+/*
+ * This function should only be called for 1542C boards - we can detect
+ * the special firmware settings and unlock the board
+ */
static int aha1542_mbenable(struct Scsi_Host *sh)
{
@@ -628,7 +636,7 @@ static int aha1542_mbenable(struct Scsi_Host *sh)
if (aha1542_out(sh->io_port, mbenable_cmd, 3))
goto fail;
- };
+ }
while (0) {
fail:
shost_printk(KERN_ERR, sh, "Mailbox init failed\n");
@@ -646,7 +654,7 @@ static int aha1542_query(struct Scsi_Host *sh)
i = inb(STATUS(sh->io_port));
if (i & DF) {
i = inb(DATA(sh->io_port));
- };
+ }
aha1542_outb(sh->io_port, CMD_INQUIRY);
aha1542_in(sh->io_port, inquiry_result, 4, 0);
if (!wait_mask(INTRFLAGS(sh->io_port), INTRMASK, HACC, 0, 0))
@@ -655,19 +663,22 @@ static int aha1542_query(struct Scsi_Host *sh)
aha1542->bios_translation = BIOS_TRANSLATION_6432; /* Default case */
- /* For an AHA1740 series board, we ignore the board since there is a
- hardware bug which can lead to wrong blocks being returned if the board
- is operating in the 1542 emulation mode. Since there is an extended mode
- driver, we simply ignore the board and let the 1740 driver pick it up.
+ /*
+ * For an AHA1740 series board, we ignore the board since there is a
+ * hardware bug which can lead to wrong blocks being returned if the board
+ * is operating in the 1542 emulation mode. Since there is an extended mode
+ * driver, we simply ignore the board and let the 1740 driver pick it up.
*/
if (inquiry_result[0] == 0x43) {
shost_printk(KERN_INFO, sh, "Emulation mode not supported for AHA-1740 hardware, use aha1740 driver instead.\n");
return 1;
- };
+ }
- /* Always call this - boards that do not support extended bios translation
- will ignore the command, and we will set the proper default */
+ /*
+ * Always call this - boards that do not support extended bios translation
+ * will ignore the command, and we will set the proper default
+ */
aha1542->bios_translation = aha1542_mbenable(sh);
@@ -877,8 +888,9 @@ static int aha1542_dev_reset(struct scsi_cmnd *cmd)
panic("Unable to find empty mailbox for aha1542.\n");
aha1542->int_cmds[mbo] = cmd; /* This will effectively
- prevent someone else from
- screwing with this cdb. */
+ * prevent someone else from
+ * screwing with this cdb.
+ */
aha1542->aha1542_last_mbo_used = mbo;
@@ -894,9 +906,9 @@ static int aha1542_dev_reset(struct scsi_cmnd *cmd)
ccb[mbo].linkptr[0] = ccb[mbo].linkptr[1] = ccb[mbo].linkptr[2] = 0;
ccb[mbo].commlinkid = 0;
- /*
- * Now tell the 1542 to flush all pending commands for this
- * target
+ /*
+ * Now tell the 1542 to flush all pending commands for this
+ * target
*/
aha1542_outb(sh->io_port, CMD_START_SCSI);
spin_unlock_irqrestore(sh->host_lock, flags);
@@ -915,7 +927,7 @@ static int aha1542_reset(struct scsi_cmnd *cmd, u8 reset_cmd)
int i;
spin_lock_irqsave(sh->host_lock, flags);
- /*
+ /*
* This does a scsi reset for all devices on the bus.
* In principle, we could also reset the 1542 - should
* we do this? Try this first, and we can add that later
@@ -939,7 +951,7 @@ static int aha1542_reset(struct scsi_cmnd *cmd, u8 reset_cmd)
/*
* Now try to pick up the pieces. For all pending commands,
* free any internal data structures, and basically clear things
- * out. We do not try and restart any commands or anything -
+ * out. We do not try and restart any commands or anything -
* the strategy handler takes care of that crap.
*/
shost_printk(KERN_WARNING, cmd->device->host, "Sent BUS RESET to scsi host %d\n", cmd->device->host->host_no);
@@ -998,6 +1010,27 @@ static int aha1542_biosparam(struct scsi_device *sdev,
}
MODULE_LICENSE("GPL");
+static int aha1542_init_cmd_priv(struct Scsi_Host *shost, struct scsi_cmnd *cmd)
+{
+ struct aha1542_cmd *acmd = scsi_cmd_priv(cmd);
+
+ acmd->data_buffer = dma_alloc_coherent(shost->dma_dev,
+ SECTOR_SIZE * AHA1542_MAX_SECTORS,
+ &acmd->data_buffer_handle, GFP_KERNEL);
+ if (!acmd->data_buffer)
+ return -ENOMEM;
+ return 0;
+}
+
+static int aha1542_exit_cmd_priv(struct Scsi_Host *shost, struct scsi_cmnd *cmd)
+{
+ struct aha1542_cmd *acmd = scsi_cmd_priv(cmd);
+
+ dma_free_coherent(shost->dma_dev, SECTOR_SIZE * AHA1542_MAX_SECTORS,
+ acmd->data_buffer, acmd->data_buffer_handle);
+ return 0;
+}
+
static struct scsi_host_template driver_template = {
.module = THIS_MODULE,
.proc_name = "aha1542",
@@ -1008,10 +1041,12 @@ static struct scsi_host_template driver_template = {
.eh_bus_reset_handler = aha1542_bus_reset,
.eh_host_reset_handler = aha1542_host_reset,
.bios_param = aha1542_biosparam,
- .can_queue = AHA1542_MAILBOXES,
+ .init_cmd_priv = aha1542_init_cmd_priv,
+ .exit_cmd_priv = aha1542_exit_cmd_priv,
+ .can_queue = AHA1542_MAILBOXES,
.this_id = 7,
- .sg_tablesize = 16,
- .unchecked_isa_dma = 1,
+ .max_sectors = AHA1542_MAX_SECTORS,
+ .sg_tablesize = SG_ALL,
};
static int aha1542_isa_match(struct device *pdev, unsigned int ndev)
@@ -1025,12 +1060,11 @@ static int aha1542_isa_match(struct device *pdev, unsigned int ndev)
return 1;
}
-static int aha1542_isa_remove(struct device *pdev,
+static void aha1542_isa_remove(struct device *pdev,
unsigned int ndev)
{
aha1542_release(dev_get_drvdata(pdev));
dev_set_drvdata(pdev, NULL);
- return 0;
}
static struct isa_driver aha1542_isa_driver = {
@@ -1063,8 +1097,10 @@ static int aha1542_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *i
io[indx] = pnp_port_start(pdev, 0);
- /* The card can be queried for its DMA, we have
- the DMA set up that is enough */
+ /*
+ * The card can be queried for its DMA, we have
+ * the DMA set up that is enough
+ */
dev_info(&pdev->dev, "ISAPnP found an AHA1535 at I/O 0x%03X", io[indx]);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.