AcoSail/kernel_optimize_test
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Merge branch 'upstream' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev

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This commit is contained in:
Linus Torvalds 2006-01-04 16:32:33 -08:00
commit 1cb9e8e01d
15 changed files with 413 additions and 253 deletions
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8
Documentation/kernel-parameters.txt
View File

@ -633,6 +633,14 @@ running once the system is up.
inport.irq= [HW] Inport (ATI XL and Microsoft) busmouse driver
Format: <irq>
combined_mode= [HW] control which driver uses IDE ports in combined
mode: legacy IDE driver, libata, or both
(in the libata case, libata.atapi_enabled=1 may be
useful as well). Note that using the ide or libata
options may affect your device naming (e.g. by
changing hdc to sdb).
Format: combined (default), ide, or libata
inttest= [IA64]
io7= [HW] IO7 for Marvel based alpha systems

30
drivers/pci/quirks.c
View File

@ -1098,6 +1098,23 @@ static void __init quirk_alder_ioapic(struct pci_dev *pdev)
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic );
#endif
enum ide_combined_type { COMBINED = 0, IDE = 1, LIBATA = 2 };
/* Defaults to combined */
static enum ide_combined_type combined_mode;
static int __init combined_setup(char *str)
{
if (!strncmp(str, "ide", 3))
combined_mode = IDE;
else if (!strncmp(str, "libata", 6))
combined_mode = LIBATA;
else /* "combined" or anything else defaults to old behavior */
combined_mode = COMBINED;
return 1;
}
__setup("combined_mode=", combined_setup);
#ifdef CONFIG_SCSI_SATA_INTEL_COMBINED
static void __devinit quirk_intel_ide_combined(struct pci_dev *pdev)
{
@ -1164,6 +1181,19 @@ static void __devinit quirk_intel_ide_combined(struct pci_dev *pdev)
if (prog & comb)
return;
/* Don't reserve any so the IDE driver can get them (but only if
* combined_mode=ide).
*/
if (combined_mode == IDE)
return;
/* Grab them both for libata if combined_mode=libata. */
if (combined_mode == LIBATA) {
request_region(0x1f0, 8, "libata"); /* port 0 */
request_region(0x170, 8, "libata"); /* port 1 */
return;
}
/* SATA port is in legacy mode. Reserve port so that
* IDE driver does not attempt to use it. If request_region
* fails, it will be obvious at boot time, so we don't bother

14
drivers/scsi/ahci.c
View File

@ -243,7 +243,7 @@ static const struct ata_port_operations ahci_ops = {
.port_stop = ahci_port_stop,
};
static struct ata_port_info ahci_port_info[] = {
static const struct ata_port_info ahci_port_info[] = {
/* board_ahci */
{
.sht = &ahci_sht,
@ -643,7 +643,8 @@ static void ahci_eng_timeout(struct ata_port *ap)
* not being called from the SCSI EH.
*/
qc->scsidone = scsi_finish_command;
ata_qc_complete(qc, AC_ERR_OTHER);
qc->err_mask |= AC_ERR_OTHER;
ata_qc_complete(qc);
}
spin_unlock_irqrestore(&host_set->lock, flags);
@ -664,7 +665,8 @@ static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
ci = readl(port_mmio + PORT_CMD_ISSUE);
if (likely((ci & 0x1) == 0)) {
if (qc) {
ata_qc_complete(qc, 0);
assert(qc->err_mask == 0);
ata_qc_complete(qc);
qc = NULL;
}
}
@ -681,8 +683,10 @@ static inline int ahci_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
/* command processing has stopped due to error; restart */
ahci_restart_port(ap, status);
if (qc)
ata_qc_complete(qc, err_mask);
if (qc) {
qc->err_mask |= AC_ERR_OTHER;
ata_qc_complete(qc);
}
}
return 1;

127
drivers/scsi/ata_piix.c
View File

@ -37,6 +37,49 @@
*
* Hardware documentation available at http://developer.intel.com/
*
* Documentation
* Publically available from Intel web site. Errata documentation
* is also publically available. As an aide to anyone hacking on this
* driver the list of errata that are relevant is below.going back to
* PIIX4. Older device documentation is now a bit tricky to find.
*
* The chipsets all follow very much the same design. The orginal Triton
* series chipsets do _not_ support independant device timings, but this
* is fixed in Triton II. With the odd mobile exception the chips then
* change little except in gaining more modes until SATA arrives. This
* driver supports only the chips with independant timing (that is those
* with SITRE and the 0x44 timing register). See pata_oldpiix and pata_mpiix
* for the early chip drivers.
*
* Errata of note:
*
* Unfixable
* PIIX4 errata #9 - Only on ultra obscure hw
* ICH3 errata #13 - Not observed to affect real hw
* by Intel
*
* Things we must deal with
* PIIX4 errata #10 - BM IDE hang with non UDMA
* (must stop/start dma to recover)
* 440MX errata #15 - As PIIX4 errata #10
* PIIX4 errata #15 - Must not read control registers
* during a PIO transfer
* 440MX errata #13 - As PIIX4 errata #15
* ICH2 errata #21 - DMA mode 0 doesn't work right
* ICH0/1 errata #55 - As ICH2 errata #21
* ICH2 spec c #9 - Extra operations needed to handle
* drive hotswap [NOT YET SUPPORTED]
* ICH2 spec c #20 - IDE PRD must not cross a 64K boundary
* and must be dword aligned
* ICH2 spec c #24 - UDMA mode 4,5 t85/86 should be 6ns not 3.3
*
* Should have been BIOS fixed:
* 450NX: errata #19 - DMA hangs on old 450NX
* 450NX: errata #20 - DMA hangs on old 450NX
* 450NX: errata #25 - Corruption with DMA on old 450NX
* ICH3 errata #15 - IDE deadlock under high load
* (BIOS must set dev 31 fn 0 bit 23)
* ICH3 errata #18 - Don't use native mode
*/
#include <linux/kernel.h>
@ -78,9 +121,7 @@ enum {
ich5_sata = 1,
piix4_pata = 2,
ich6_sata = 3,
ich6_sata_rm = 4,
ich7_sata = 5,
esb2_sata = 6,
ich6_sata_ahci = 4,
PIIX_AHCI_DEVICE = 6,
};
@ -111,11 +152,11 @@ static const struct pci_device_id piix_pci_tbl[] = {
{ 0x8086, 0x25a3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
{ 0x8086, 0x25b0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
{ 0x8086, 0x2651, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
{ 0x8086, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_rm },
{ 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_rm },
{ 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich7_sata },
{ 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich7_sata },
{ 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, esb2_sata },
{ 0x8086, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
{ 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
{ 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
{ 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
{ 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
{ } /* terminate list */
};
@ -258,31 +299,7 @@ static struct ata_port_info piix_port_info[] = {
.port_ops = &piix_sata_ops,
},
/* ich6_sata_rm */
{
.sht = &piix_sht,
.host_flags = ATA_FLAG_SATA | ATA_FLAG_SRST |
PIIX_FLAG_COMBINED | PIIX_FLAG_CHECKINTR |
ATA_FLAG_SLAVE_POSS | PIIX_FLAG_AHCI,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x7f, /* udma0-6 */
.port_ops = &piix_sata_ops,
},
/* ich7_sata */
{
.sht = &piix_sht,
.host_flags = ATA_FLAG_SATA | ATA_FLAG_SRST |
PIIX_FLAG_COMBINED | PIIX_FLAG_CHECKINTR |
ATA_FLAG_SLAVE_POSS | PIIX_FLAG_AHCI,
.pio_mask = 0x1f, /* pio0-4 */
.mwdma_mask = 0x07, /* mwdma0-2 */
.udma_mask = 0x7f, /* udma0-6 */
.port_ops = &piix_sata_ops,
},
/* esb2_sata */
/* ich6_sata_ahci */
{
.sht = &piix_sht,
.host_flags = ATA_FLAG_SATA | ATA_FLAG_SRST |
@ -602,6 +619,40 @@ static int piix_disable_ahci(struct pci_dev *pdev)
return rc;
}
/**
* piix_check_450nx_errata - Check for problem 450NX setup
*
* Check for the present of 450NX errata #19 and errata #25. If
* they are found return an error code so we can turn off DMA
*/
static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev)
{
struct pci_dev *pdev = NULL;
u16 cfg;
u8 rev;
int no_piix_dma = 0;
while((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL)
{
/* Look for 450NX PXB. Check for problem configurations
A PCI quirk checks bit 6 already */
pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
pci_read_config_word(pdev, 0x41, &cfg);
/* Only on the original revision: IDE DMA can hang */
if(rev == 0x00)
no_piix_dma = 1;
/* On all revisions below 5 PXB bus lock must be disabled for IDE */
else if(cfg & (1<<14) && rev < 5)
no_piix_dma = 2;
}
if(no_piix_dma)
dev_printk(KERN_WARNING, &ata_dev->dev, "450NX errata present, disabling IDE DMA.\n");
if(no_piix_dma == 2)
dev_printk(KERN_WARNING, &ata_dev->dev, "A BIOS update may resolve this.\n");
return no_piix_dma;
}
/**
* piix_init_one - Register PIIX ATA PCI device with kernel services
* @pdev: PCI device to register
@ -676,7 +727,15 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
"combined mode detected (p=%u, s=%u)\n",
pata_chan, sata_chan);
}
if (piix_check_450nx_errata(pdev)) {
/* 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;
}
return ata_pci_init_one(pdev, port_info, 2);
}

364
drivers/scsi/libata-core.c
View File

@ -605,7 +605,7 @@ void ata_rwcmd_protocol(struct ata_queued_cmd *qc)
tf->command = ata_rw_cmds[index + lba48 + write];
}
static const char * xfer_mode_str[] = {
static const char * const xfer_mode_str[] = {
"UDMA/16",
"UDMA/25",
"UDMA/33",
@ -1046,28 +1046,103 @@ static unsigned int ata_pio_modes(const struct ata_device *adev)
return modes;
}
static int ata_qc_wait_err(struct ata_queued_cmd *qc,
struct completion *wait)
struct ata_exec_internal_arg {
unsigned int err_mask;
struct ata_taskfile *tf;
struct completion *waiting;
};
int ata_qc_complete_internal(struct ata_queued_cmd *qc)
{
int rc = 0;
struct ata_exec_internal_arg *arg = qc->private_data;
struct completion *waiting = arg->waiting;
if (wait_for_completion_timeout(wait, 30 * HZ) < 1) {
/* timeout handling */
unsigned int err_mask = ac_err_mask(ata_chk_status(qc->ap));
if (!(qc->err_mask & ~AC_ERR_DEV))
qc->ap->ops->tf_read(qc->ap, arg->tf);
arg->err_mask = qc->err_mask;
arg->waiting = NULL;
complete(waiting);
if (!err_mask) {
printk(KERN_WARNING "ata%u: slow completion (cmd %x)\n",
qc->ap->id, qc->tf.command);
} else {
printk(KERN_WARNING "ata%u: qc timeout (cmd %x)\n",
qc->ap->id, qc->tf.command);
rc = -EIO;
}
return 0;
}
ata_qc_complete(qc, err_mask);
/**
* ata_exec_internal - execute libata internal command
* @ap: Port to which the command is sent
* @dev: Device to which the command is sent
* @tf: Taskfile registers for the command and the result
* @dma_dir: Data tranfer direction of the command
* @buf: Data buffer of the command
* @buflen: Length of data buffer
*
* Executes libata internal command with timeout. @tf contains
* command on entry and result on return. Timeout and error
* conditions are reported via return value. No recovery action
* is taken after a command times out. It's caller's duty to
* clean up after timeout.
*
* LOCKING:
* None. Should be called with kernel context, might sleep.
*/
static unsigned
ata_exec_internal(struct ata_port *ap, struct ata_device *dev,
struct ata_taskfile *tf,
int dma_dir, void *buf, unsigned int buflen)
{
u8 command = tf->command;
struct ata_queued_cmd *qc;
DECLARE_COMPLETION(wait);
unsigned long flags;
struct ata_exec_internal_arg arg;
spin_lock_irqsave(&ap->host_set->lock, flags);
qc = ata_qc_new_init(ap, dev);
BUG_ON(qc == NULL);
qc->tf = *tf;
qc->dma_dir = dma_dir;
if (dma_dir != DMA_NONE) {
ata_sg_init_one(qc, buf, buflen);
qc->nsect = buflen / ATA_SECT_SIZE;
}
return rc;
arg.waiting = &wait;
arg.tf = tf;
qc->private_data = &arg;
qc->complete_fn = ata_qc_complete_internal;
if (ata_qc_issue(qc))
goto issue_fail;
spin_unlock_irqrestore(&ap->host_set->lock, flags);
if (!wait_for_completion_timeout(&wait, ATA_TMOUT_INTERNAL)) {
spin_lock_irqsave(&ap->host_set->lock, flags);
/* We're racing with irq here. If we lose, the
* following test prevents us from completing the qc
* again. If completion irq occurs after here but
* before the caller cleans up, it will result in a
* spurious interrupt. We can live with that.
*/
if (arg.waiting) {
qc->err_mask = AC_ERR_OTHER;
ata_qc_complete(qc);
printk(KERN_WARNING "ata%u: qc timeout (cmd 0x%x)\n",
ap->id, command);
}
spin_unlock_irqrestore(&ap->host_set->lock, flags);
}
return arg.err_mask;
issue_fail:
ata_qc_free(qc);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
return AC_ERR_OTHER;
}
/**
@ -1099,9 +1174,8 @@ static void ata_dev_identify(struct ata_port *ap, unsigned int device)
u16 tmp;
unsigned long xfer_modes;
unsigned int using_edd;
DECLARE_COMPLETION(wait);
struct ata_queued_cmd *qc;
unsigned long flags;
struct ata_taskfile tf;
unsigned int err_mask;
int rc;
if (!ata_dev_present(dev)) {
@ -1122,40 +1196,26 @@ static void ata_dev_identify(struct ata_port *ap, unsigned int device)
ata_dev_select(ap, device, 1, 1); /* select device 0/1 */
qc = ata_qc_new_init(ap, dev);
BUG_ON(qc == NULL);
ata_sg_init_one(qc, dev->id, sizeof(dev->id));
qc->dma_dir = DMA_FROM_DEVICE;
qc->tf.protocol = ATA_PROT_PIO;
qc->nsect = 1;
retry:
ata_tf_init(ap, &tf, device);
if (dev->class == ATA_DEV_ATA) {
qc->tf.command = ATA_CMD_ID_ATA;
tf.command = ATA_CMD_ID_ATA;
DPRINTK("do ATA identify\n");
} else {
qc->tf.command = ATA_CMD_ID_ATAPI;
tf.command = ATA_CMD_ID_ATAPI;
DPRINTK("do ATAPI identify\n");
}
qc->waiting = &wait;
qc->complete_fn = ata_qc_complete_noop;
tf.protocol = ATA_PROT_PIO;
spin_lock_irqsave(&ap->host_set->lock, flags);
rc = ata_qc_issue(qc);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
err_mask = ata_exec_internal(ap, dev, &tf, DMA_FROM_DEVICE,
dev->id, sizeof(dev->id));
if (rc)
goto err_out;
else
ata_qc_wait_err(qc, &wait);
if (err_mask) {
if (err_mask & ~AC_ERR_DEV)
goto err_out;
spin_lock_irqsave(&ap->host_set->lock, flags);
ap->ops->tf_read(ap, &qc->tf);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
if (qc->tf.command & ATA_ERR) {
/*
* arg! EDD works for all test cases, but seems to return
* the ATA signature for some ATAPI devices. Until the
@ -1168,13 +1228,9 @@ static void ata_dev_identify(struct ata_port *ap, unsigned int device)
* to have this problem.
*/
if ((using_edd) && (dev->class == ATA_DEV_ATA)) {
u8 err = qc->tf.feature;
u8 err = tf.feature;
if (err & ATA_ABORTED) {
dev->class = ATA_DEV_ATAPI;
qc->cursg = 0;
qc->cursg_ofs = 0;
qc->cursect = 0;
qc->nsect = 1;
goto retry;
}
}
@ -1444,11 +1500,23 @@ void __sata_phy_reset(struct ata_port *ap)
} while (time_before(jiffies, timeout));
/* TODO: phy layer with polling, timeouts, etc. */
if (sata_dev_present(ap))
sstatus = scr_read(ap, SCR_STATUS);
if (sata_dev_present(ap)) {
const char *speed;
u32 tmp;
tmp = (sstatus >> 4) & 0xf;
if (tmp & (1 << 0))
speed = "1.5";
else if (tmp & (1 << 1))
speed = "3.0";
else
speed = "<unknown>";
printk(KERN_INFO "ata%u: SATA link up %s Gbps (SStatus %X)\n",
ap->id, speed, sstatus);
ata_port_probe(ap);
else {
sstatus = scr_read(ap, SCR_STATUS);
printk(KERN_INFO "ata%u: no device found (phy stat %08x)\n",
} else {
printk(KERN_INFO "ata%u: SATA link down (SStatus %X)\n",
ap->id, sstatus);
ata_port_disable(ap);
}
@ -2071,7 +2139,7 @@ static void ata_pr_blacklisted(const struct ata_port *ap,
ap->id, dev->devno);
}
static const char * ata_dma_blacklist [] = {
static const char * const ata_dma_blacklist [] = {
"WDC AC11000H",
"WDC AC22100H",
"WDC AC32500H",
@ -2266,34 +2334,23 @@ static int ata_choose_xfer_mode(const struct ata_port *ap,
static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev)
{
DECLARE_COMPLETION(wait);
struct ata_queued_cmd *qc;
int rc;
unsigned long flags;
struct ata_taskfile tf;
/* set up set-features taskfile */
DPRINTK("set features - xfer mode\n");
qc = ata_qc_new_init(ap, dev);
BUG_ON(qc == NULL);
ata_tf_init(ap, &tf, dev->devno);
tf.command = ATA_CMD_SET_FEATURES;
tf.feature = SETFEATURES_XFER;
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
tf.protocol = ATA_PROT_NODATA;
tf.nsect = dev->xfer_mode;
qc->tf.command = ATA_CMD_SET_FEATURES;
qc->tf.feature = SETFEATURES_XFER;
qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
qc->tf.protocol = ATA_PROT_NODATA;
qc->tf.nsect = dev->xfer_mode;
qc->waiting = &wait;
qc->complete_fn = ata_qc_complete_noop;
spin_lock_irqsave(&ap->host_set->lock, flags);
rc = ata_qc_issue(qc);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
if (rc)
if (ata_exec_internal(ap, dev, &tf, DMA_NONE, NULL, 0)) {
printk(KERN_ERR "ata%u: failed to set xfermode, disabled\n",
ap->id);
ata_port_disable(ap);
else
ata_qc_wait_err(qc, &wait);
}
DPRINTK("EXIT\n");
}
@ -2308,41 +2365,25 @@ static void ata_dev_set_xfermode(struct ata_port *ap, struct ata_device *dev)
static void ata_dev_reread_id(struct ata_port *ap, struct ata_device *dev)
{
DECLARE_COMPLETION(wait);
struct ata_queued_cmd *qc;
unsigned long flags;
int rc;
struct ata_taskfile tf;
qc = ata_qc_new_init(ap, dev);
BUG_ON(qc == NULL);
ata_sg_init_one(qc, dev->id, sizeof(dev->id));
qc->dma_dir = DMA_FROM_DEVICE;
ata_tf_init(ap, &tf, dev->devno);
if (dev->class == ATA_DEV_ATA) {
qc->tf.command = ATA_CMD_ID_ATA;
tf.command = ATA_CMD_ID_ATA;
DPRINTK("do ATA identify\n");
} else {
qc->tf.command = ATA_CMD_ID_ATAPI;
tf.command = ATA_CMD_ID_ATAPI;
DPRINTK("do ATAPI identify\n");
}
qc->tf.flags |= ATA_TFLAG_DEVICE;
qc->tf.protocol = ATA_PROT_PIO;
qc->nsect = 1;
tf.flags |= ATA_TFLAG_DEVICE;
tf.protocol = ATA_PROT_PIO;
qc->waiting = &wait;
qc->complete_fn = ata_qc_complete_noop;
spin_lock_irqsave(&ap->host_set->lock, flags);
rc = ata_qc_issue(qc);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
if (rc)
if (ata_exec_internal(ap, dev, &tf, DMA_FROM_DEVICE,
dev->id, sizeof(dev->id)))
goto err_out;
ata_qc_wait_err(qc, &wait);
swap_buf_le16(dev->id, ATA_ID_WORDS);
ata_dump_id(dev);
@ -2351,6 +2392,7 @@ static void ata_dev_reread_id(struct ata_port *ap, struct ata_device *dev)
return;
err_out:
printk(KERN_ERR "ata%u: failed to reread ID, disabled\n", ap->id);
ata_port_disable(ap);
}
@ -2364,10 +2406,7 @@ static void ata_dev_reread_id(struct ata_port *ap, struct ata_device *dev)
static void ata_dev_init_params(struct ata_port *ap, struct ata_device *dev)
{
DECLARE_COMPLETION(wait);
struct ata_queued_cmd *qc;
int rc;
unsigned long flags;
struct ata_taskfile tf;
u16 sectors = dev->id[6];
u16 heads = dev->id[3];
@ -2378,26 +2417,18 @@ static void ata_dev_init_params(struct ata_port *ap, struct ata_device *dev)
/* set up init dev params taskfile */
DPRINTK("init dev params \n");
qc = ata_qc_new_init(ap, dev);
BUG_ON(qc == NULL);
ata_tf_init(ap, &tf, dev->devno);
tf.command = ATA_CMD_INIT_DEV_PARAMS;
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
tf.protocol = ATA_PROT_NODATA;
tf.nsect = sectors;
tf.device |= (heads - 1) & 0x0f; /* max head = num. of heads - 1 */
qc->tf.command = ATA_CMD_INIT_DEV_PARAMS;
qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
qc->tf.protocol = ATA_PROT_NODATA;
qc->tf.nsect = sectors;
qc->tf.device |= (heads - 1) & 0x0f; /* max head = num. of heads - 1 */
qc->waiting = &wait;
qc->complete_fn = ata_qc_complete_noop;
spin_lock_irqsave(&ap->host_set->lock, flags);
rc = ata_qc_issue(qc);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
if (rc)
if (ata_exec_internal(ap, dev, &tf, DMA_NONE, NULL, 0)) {
printk(KERN_ERR "ata%u: failed to init parameters, disabled\n",
ap->id);
ata_port_disable(ap);
else
ata_qc_wait_err(qc, &wait);
}
DPRINTK("EXIT\n");
}
@ -2765,7 +2796,7 @@ static int ata_sg_setup(struct ata_queued_cmd *qc)
* None. (grabs host lock)
*/
void ata_poll_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
void ata_poll_qc_complete(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
unsigned long flags;
@ -2773,7 +2804,7 @@ void ata_poll_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
spin_lock_irqsave(&ap->host_set->lock, flags);
ap->flags &= ~ATA_FLAG_NOINTR;
ata_irq_on(ap);
ata_qc_complete(qc, err_mask);
ata_qc_complete(qc);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
}
@ -2790,10 +2821,14 @@ void ata_poll_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
static unsigned long ata_pio_poll(struct ata_port *ap)
{
struct ata_queued_cmd *qc;
u8 status;
unsigned int poll_state = HSM_ST_UNKNOWN;
unsigned int reg_state = HSM_ST_UNKNOWN;
qc = ata_qc_from_tag(ap, ap->active_tag);
assert(qc != NULL);
switch (ap->hsm_task_state) {
case HSM_ST:
case HSM_ST_POLL:
@ -2813,6 +2848,7 @@ static unsigned long ata_pio_poll(struct ata_port *ap)
status = ata_chk_status(ap);
if (status & ATA_BUSY) {
if (time_after(jiffies, ap->pio_task_timeout)) {
qc->err_mask |= AC_ERR_ATA_BUS;
ap->hsm_task_state = HSM_ST_TMOUT;
return 0;
}
@ -2847,29 +2883,31 @@ static int ata_pio_complete (struct ata_port *ap)
* msecs, then chk-status again. If still busy, fall back to
* HSM_ST_POLL state.
*/
drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 10);
if (drv_stat & (ATA_BUSY | ATA_DRQ)) {
drv_stat = ata_busy_wait(ap, ATA_BUSY, 10);
if (drv_stat & ATA_BUSY) {
msleep(2);
drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 10);
if (drv_stat & (ATA_BUSY | ATA_DRQ)) {
drv_stat = ata_busy_wait(ap, ATA_BUSY, 10);
if (drv_stat & ATA_BUSY) {
ap->hsm_task_state = HSM_ST_LAST_POLL;
ap->pio_task_timeout = jiffies + ATA_TMOUT_PIO;
return 0;
}
}
qc = ata_qc_from_tag(ap, ap->active_tag);
assert(qc != NULL);
drv_stat = ata_wait_idle(ap);
if (!ata_ok(drv_stat)) {
qc->err_mask |= __ac_err_mask(drv_stat);
ap->hsm_task_state = HSM_ST_ERR;
return 0;
}
qc = ata_qc_from_tag(ap, ap->active_tag);
assert(qc != NULL);
ap->hsm_task_state = HSM_ST_IDLE;
ata_poll_qc_complete(qc, 0);
assert(qc->err_mask == 0);
ata_poll_qc_complete(qc);
/* another command may start at this point */
@ -3177,6 +3215,7 @@ static void atapi_pio_bytes(struct ata_queued_cmd *qc)
err_out:
printk(KERN_INFO "ata%u: dev %u: ATAPI check failed\n",
ap->id, dev->devno);
qc->err_mask |= AC_ERR_ATA_BUS;
ap->hsm_task_state = HSM_ST_ERR;
}
@ -3215,8 +3254,16 @@ static void ata_pio_block(struct ata_port *ap)
qc = ata_qc_from_tag(ap, ap->active_tag);
assert(qc != NULL);
/* check error */
if (status & (ATA_ERR | ATA_DF)) {
qc->err_mask |= AC_ERR_DEV;
ap->hsm_task_state = HSM_ST_ERR;
return;
}
/* transfer data if any */
if (is_atapi_taskfile(&qc->tf)) {
/* no more data to transfer or unsupported ATAPI command */
/* DRQ=0 means no more data to transfer */
if ((status & ATA_DRQ) == 0) {
ap->hsm_task_state = HSM_ST_LAST;
return;
@ -3226,6 +3273,7 @@ static void ata_pio_block(struct ata_port *ap)
} else {
/* handle BSY=0, DRQ=0 as error */
if ((status & ATA_DRQ) == 0) {
qc->err_mask |= AC_ERR_ATA_BUS;
ap->hsm_task_state = HSM_ST_ERR;
return;
}
@ -3243,9 +3291,14 @@ static void ata_pio_error(struct ata_port *ap)
qc = ata_qc_from_tag(ap, ap->active_tag);
assert(qc != NULL);
/* make sure qc->err_mask is available to
* know what's wrong and recover
*/
assert(qc->err_mask);
ap->hsm_task_state = HSM_ST_IDLE;
ata_poll_qc_complete(qc, AC_ERR_ATA_BUS);
ata_poll_qc_complete(qc);
}
static void ata_pio_task(void *_data)
@ -3347,7 +3400,8 @@ static void ata_qc_timeout(struct ata_queued_cmd *qc)
ap->id, qc->tf.command, drv_stat, host_stat);
/* complete taskfile transaction */
ata_qc_complete(qc, ac_err_mask(drv_stat));
qc->err_mask |= ac_err_mask(drv_stat);
ata_qc_complete(qc);
break;
}
@ -3446,15 +3500,10 @@ struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
return qc;
}
int ata_qc_complete_noop(struct ata_queued_cmd *qc, unsigned int err_mask)
{
return 0;
}
static void __ata_qc_complete(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
unsigned int tag, do_clear = 0;
unsigned int tag;
qc->flags = 0;
tag = qc->tag;
@ -3462,17 +3511,8 @@ static void __ata_qc_complete(struct ata_queued_cmd *qc)
if (tag == ap->active_tag)
ap->active_tag = ATA_TAG_POISON;
qc->tag = ATA_TAG_POISON;
do_clear = 1;
}
if (qc->waiting) {
struct completion *waiting = qc->waiting;
qc->waiting = NULL;
complete(waiting);
}
if (likely(do_clear))
clear_bit(tag, &ap->qactive);
}
}
/**
@ -3488,7 +3528,6 @@ static void __ata_qc_complete(struct ata_queued_cmd *qc)
void ata_qc_free(struct ata_queued_cmd *qc)
{
assert(qc != NULL); /* ata_qc_from_tag _might_ return NULL */
assert(qc->waiting == NULL); /* nothing should be waiting */
__ata_qc_complete(qc);
}
@ -3505,7 +3544,7 @@ void ata_qc_free(struct ata_queued_cmd *qc)
* spin_lock_irqsave(host_set lock)
*/
void ata_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
void ata_qc_complete(struct ata_queued_cmd *qc)
{
int rc;
@ -3522,7 +3561,7 @@ void ata_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
qc->flags &= ~ATA_QCFLAG_ACTIVE;
/* call completion callback */
rc = qc->complete_fn(qc, err_mask);
rc = qc->complete_fn(qc);
/* if callback indicates not to complete command (non-zero),
* return immediately
@ -3960,7 +3999,8 @@ inline unsigned int ata_host_intr (struct ata_port *ap,
ap->ops->irq_clear(ap);
/* complete taskfile transaction */
ata_qc_complete(qc, ac_err_mask(status));
qc->err_mask |= ac_err_mask(status);
ata_qc_complete(qc);
break;
default:
@ -4054,13 +4094,17 @@ static void atapi_packet_task(void *_data)
/* sleep-wait for BSY to clear */
DPRINTK("busy wait\n");
if (ata_busy_sleep(ap, ATA_TMOUT_CDB_QUICK, ATA_TMOUT_CDB))
goto err_out_status;
if (ata_busy_sleep(ap, ATA_TMOUT_CDB_QUICK, ATA_TMOUT_CDB)) {
qc->err_mask |= AC_ERR_ATA_BUS;
goto err_out;
}
/* make sure DRQ is set */
status = ata_chk_status(ap);
if ((status & (ATA_BUSY | ATA_DRQ)) != ATA_DRQ)
if ((status & (ATA_BUSY | ATA_DRQ)) != ATA_DRQ) {
qc->err_mask |= AC_ERR_ATA_BUS;
goto err_out;
}
/* send SCSI cdb */
DPRINTK("send cdb\n");
@ -4092,10 +4136,8 @@ static void atapi_packet_task(void *_data)
return;
err_out_status:
status = ata_chk_status(ap);
err_out:
ata_poll_qc_complete(qc, __ac_err_mask(status));
ata_poll_qc_complete(qc);
}

24
drivers/scsi/libata-scsi.c
View File

@ -418,7 +418,7 @@ void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc,
int i;
/* Based on the 3ware driver translation table */
static unsigned char sense_table[][4] = {
static const unsigned char sense_table[][4] = {
/* BBD|ECC|ID|MAR */
{0xd1, ABORTED_COMMAND, 0x00, 0x00}, // Device busy Aborted command
/* BBD|ECC|ID */
@ -449,7 +449,7 @@ void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc,
{0x80, MEDIUM_ERROR, 0x11, 0x04}, // Block marked bad Medium error, unrecovered read error
{0xFF, 0xFF, 0xFF, 0xFF}, // END mark
};
static unsigned char stat_table[][4] = {
static const unsigned char stat_table[][4] = {
/* Must be first because BUSY means no other bits valid */
{0x80, ABORTED_COMMAND, 0x47, 0x00}, // Busy, fake parity for now
{0x20, HARDWARE_ERROR, 0x00, 0x00}, // Device fault
@ -1203,12 +1203,11 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm
return 1;
}
static int ata_scsi_qc_complete(struct ata_queued_cmd *qc,
unsigned int err_mask)
static int ata_scsi_qc_complete(struct ata_queued_cmd *qc)
{
struct scsi_cmnd *cmd = qc->scsicmd;
u8 *cdb = cmd->cmnd;
int need_sense = (err_mask != 0);
int need_sense = (qc->err_mask != 0);
/* For ATA pass thru (SAT) commands, generate a sense block if
* user mandated it or if there's an error. Note that if we
@ -1532,7 +1531,7 @@ unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf,
return 0;
}
static const char *inq_83_str = "Linux ATA-SCSI simulator";
static const char * const inq_83_str = "Linux ATA-SCSI simulator";
/**
* ata_scsiop_inq_83 - Simulate INQUIRY EVPD page 83, device identity
@ -1955,9 +1954,9 @@ void ata_scsi_badcmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *), u8
done(cmd);
}
static int atapi_sense_complete(struct ata_queued_cmd *qc,unsigned int err_mask)
static int atapi_sense_complete(struct ata_queued_cmd *qc)
{
if (err_mask && ((err_mask & AC_ERR_DEV) == 0))
if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0))
/* FIXME: not quite right; we don't want the
* translation of taskfile registers into
* a sense descriptors, since that's only
@ -2015,15 +2014,18 @@ static void atapi_request_sense(struct ata_queued_cmd *qc)
qc->complete_fn = atapi_sense_complete;
if (ata_qc_issue(qc))
ata_qc_complete(qc, AC_ERR_OTHER);
if (ata_qc_issue(qc)) {
qc->err_mask |= AC_ERR_OTHER;
ata_qc_complete(qc);
}
DPRINTK("EXIT\n");
}
static int atapi_qc_complete(struct ata_queued_cmd *qc, unsigned int err_mask)
static int atapi_qc_complete(struct ata_queued_cmd *qc)
{
struct scsi_cmnd *cmd = qc->scsicmd;
unsigned int err_mask = qc->err_mask;
VPRINTK("ENTER, err_mask 0x%X\n", err_mask);

1
drivers/scsi/libata.h
View File

@ -39,7 +39,6 @@ struct ata_scsi_args {
/* libata-core.c */
extern int atapi_enabled;
extern int ata_qc_complete_noop(struct ata_queued_cmd *qc, unsigned int err_mask);
extern struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap,
struct ata_device *dev);
extern void ata_rwcmd_protocol(struct ata_queued_cmd *qc);

11
drivers/scsi/pdc_adma.c
View File

@ -464,14 +464,12 @@ static inline unsigned int adma_intr_pkt(struct ata_host_set *host_set)
continue;
qc = ata_qc_from_tag(ap, ap->active_tag);
if (qc && (!(qc->tf.ctl & ATA_NIEN))) {
unsigned int err_mask = 0;
if ((status & (aPERR | aPSD | aUIRQ)))
err_mask = AC_ERR_OTHER;
qc->err_mask |= AC_ERR_OTHER;
else if (pp->pkt[0] != cDONE)
err_mask = AC_ERR_OTHER;
qc->err_mask |= AC_ERR_OTHER;
ata_qc_complete(qc, err_mask);
ata_qc_complete(qc);
}
}
return handled;
@ -501,7 +499,8 @@ static inline unsigned int adma_intr_mmio(struct ata_host_set *host_set)
/* complete taskfile transaction */
pp->state = adma_state_idle;
ata_qc_complete(qc, ac_err_mask(status));
qc->err_mask |= ac_err_mask(status);
ata_qc_complete(qc);
handled = 1;
}
}

11
drivers/scsi/sata_mv.c
View File

@ -431,7 +431,7 @@ static const struct ata_port_operations mv6_ops = {
.host_stop = mv_host_stop,
};
static struct ata_port_info mv_port_info[] = {
static const struct ata_port_info mv_port_info[] = {
{ /* chip_504x */
.sht = &mv_sht,
.host_flags = MV_COMMON_FLAGS,
@ -1243,8 +1243,10 @@ static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
VPRINTK("port %u IRQ found for qc, "
"ata_status 0x%x\n", port,ata_status);
/* mark qc status appropriately */
if (!(qc->tf.ctl & ATA_NIEN))
ata_qc_complete(qc, err_mask);
if (!(qc->tf.ctl & ATA_NIEN)) {
qc->err_mask |= err_mask;
ata_qc_complete(qc);
}
}
}
}
@ -1865,7 +1867,8 @@ static void mv_eng_timeout(struct ata_port *ap)
*/
spin_lock_irqsave(&ap->host_set->lock, flags);
qc->scsidone = scsi_finish_command;
ata_qc_complete(qc, AC_ERR_OTHER);
qc->err_mask |= AC_ERR_OTHER;
ata_qc_complete(qc);
spin_unlock_irqrestore(&ap->host_set->lock, flags);
}
}

20
drivers/scsi/sata_promise.c
View File

@ -161,7 +161,7 @@ static const struct ata_port_operations pdc_pata_ops = {
.host_stop = ata_pci_host_stop,
};
static struct ata_port_info pdc_port_info[] = {
static const struct ata_port_info pdc_port_info[] = {
/* board_2037x */
{
.sht = &pdc_ata_sht,
@ -401,7 +401,8 @@ static void pdc_eng_timeout(struct ata_port *ap)
case ATA_PROT_NODATA:
printk(KERN_ERR "ata%u: command timeout\n", ap->id);
drv_stat = ata_wait_idle(ap);
ata_qc_complete(qc, __ac_err_mask(drv_stat));
qc->err_mask |= __ac_err_mask(drv_stat);
ata_qc_complete(qc);
break;
default:
@ -410,7 +411,8 @@ static void pdc_eng_timeout(struct ata_port *ap)
printk(KERN_ERR "ata%u: unknown timeout, cmd 0x%x stat 0x%x\n",
ap->id, qc->tf.command, drv_stat);
ata_qc_complete(qc, ac_err_mask(drv_stat));
qc->err_mask |= ac_err_mask(drv_stat);
ata_qc_complete(qc);
break;
}
@ -422,21 +424,21 @@ static void pdc_eng_timeout(struct ata_port *ap)
static inline unsigned int pdc_host_intr( struct ata_port *ap,
struct ata_queued_cmd *qc)
{
unsigned int handled = 0, err_mask = 0;
unsigned int handled = 0;
u32 tmp;
void __iomem *mmio = (void __iomem *) ap->ioaddr.cmd_addr + PDC_GLOBAL_CTL;
tmp = readl(mmio);
if (tmp & PDC_ERR_MASK) {
err_mask = AC_ERR_DEV;
qc->err_mask |= AC_ERR_DEV;
pdc_reset_port(ap);
}
switch (qc->tf.protocol) {
case ATA_PROT_DMA:
case ATA_PROT_NODATA:
err_mask |= ac_err_mask(ata_wait_idle(ap));
ata_qc_complete(qc, err_mask);
qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
ata_qc_complete(qc);
handled = 1;
break;
@ -703,7 +705,7 @@ static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
probe_ent->port[3].scr_addr = base + 0x700;
break;
case board_2037x:
probe_ent->n_ports = 2;
probe_ent->n_ports = 2;
break;
case board_20619:
probe_ent->n_ports = 4;
@ -713,7 +715,7 @@ static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
probe_ent->port[2].scr_addr = base + 0x600;
probe_ent->port[3].scr_addr = base + 0x700;
break;
break;
default:
BUG();
break;

9
drivers/scsi/sata_qstor.c
View File

@ -170,7 +170,7 @@ static const struct ata_port_operations qs_ata_ops = {
.bmdma_status = qs_bmdma_status,
};
static struct ata_port_info qs_port_info[] = {
static const struct ata_port_info qs_port_info[] = {
/* board_2068_idx */
{
.sht = &qs_ata_sht,
@ -409,8 +409,8 @@ static inline unsigned int qs_intr_pkt(struct ata_host_set *host_set)
case 3: /* device error */
pp->state = qs_state_idle;
qs_enter_reg_mode(qc->ap);
ata_qc_complete(qc,
ac_err_mask(sDST));
qc->err_mask |= ac_err_mask(sDST);
ata_qc_complete(qc);
break;
default:
break;
@ -447,7 +447,8 @@ static inline unsigned int qs_intr_mmio(struct ata_host_set *host_set)
/* complete taskfile transaction */
pp->state = qs_state_idle;
ata_qc_complete(qc, ac_err_mask(status));
qc->err_mask |= ac_err_mask(status);
ata_qc_complete(qc);
handled = 1;
}
}

2
drivers/scsi/sata_sil.c
View File

@ -176,7 +176,7 @@ static const struct ata_port_operations sil_ops = {
.host_stop = ata_pci_host_stop,
};
static struct ata_port_info sil_port_info[] = {
static const struct ata_port_info sil_port_info[] = {
/* sil_3112 */
{
.sht = &sil_sht,

15
drivers/scsi/sata_sil24.c
View File

@ -654,7 +654,8 @@ static void sil24_eng_timeout(struct ata_port *ap)
*/
printk(KERN_ERR "ata%u: command timeout\n", ap->id);
qc->scsidone = scsi_finish_command;
ata_qc_complete(qc, AC_ERR_OTHER);
qc->err_mask |= AC_ERR_OTHER;
ata_qc_complete(qc);
sil24_reset_controller(ap);
}
@ -711,8 +712,10 @@ static void sil24_error_intr(struct ata_port *ap, u32 slot_stat)
sil24_reset_controller(ap);
}
if (qc)
ata_qc_complete(qc, err_mask);
if (qc) {
qc->err_mask |= err_mask;
ata_qc_complete(qc);
}
}
static inline void sil24_host_intr(struct ata_port *ap)
@ -734,8 +737,10 @@ static inline void sil24_host_intr(struct ata_port *ap)
*/
sil24_update_tf(ap);
if (qc)
ata_qc_complete(qc, ac_err_mask(pp->tf.command));
if (qc) {
qc->err_mask |= ac_err_mask(pp->tf.command);
ata_qc_complete(qc);
}
} else
sil24_error_intr(ap, slot_stat);
}

17
drivers/scsi/sata_sx4.c
View File

@ -215,7 +215,7 @@ static const struct ata_port_operations pdc_20621_ops = {
.host_stop = pdc20621_host_stop,
};
static struct ata_port_info pdc_port_info[] = {
static const struct ata_port_info pdc_port_info[] = {
/* board_20621 */
{
.sht = &pdc_sata_sht,
@ -719,7 +719,8 @@ static inline unsigned int pdc20621_host_intr( struct ata_port *ap,
VPRINTK("ata%u: read hdma, 0x%x 0x%x\n", ap->id,
readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
/* get drive status; clear intr; complete txn */
ata_qc_complete(qc, ac_err_mask(ata_wait_idle(ap)));
qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
ata_qc_complete(qc);
pdc20621_pop_hdma(qc);
}
@ -757,7 +758,8 @@ static inline unsigned int pdc20621_host_intr( struct ata_port *ap,
VPRINTK("ata%u: write ata, 0x%x 0x%x\n", ap->id,
readl(mmio + 0x104), readl(mmio + PDC_HDMA_CTLSTAT));
/* get drive status; clear intr; complete txn */
ata_qc_complete(qc, ac_err_mask(ata_wait_idle(ap)));
qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
ata_qc_complete(qc);
pdc20621_pop_hdma(qc);
}
handled = 1;
@ -767,7 +769,8 @@ static inline unsigned int pdc20621_host_intr( struct ata_port *ap,
status = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);
DPRINTK("BUS_NODATA (drv_stat 0x%X)\n", status);
ata_qc_complete(qc, ac_err_mask(status));
qc->err_mask |= ac_err_mask(status);
ata_qc_complete(qc);
handled = 1;
} else {
@ -882,7 +885,8 @@ static void pdc_eng_timeout(struct ata_port *ap)
case ATA_PROT_DMA:
case ATA_PROT_NODATA:
printk(KERN_ERR "ata%u: command timeout\n", ap->id);
ata_qc_complete(qc, __ac_err_mask(ata_wait_idle(ap)));
qc->err_mask |= __ac_err_mask(ata_wait_idle(ap));
ata_qc_complete(qc);
break;
default:
@ -891,7 +895,8 @@ static void pdc_eng_timeout(struct ata_port *ap)
printk(KERN_ERR "ata%u: unknown timeout, cmd 0x%x stat 0x%x\n",
ap->id, qc->tf.command, drv_stat);
ata_qc_complete(qc, ac_err_mask(drv_stat));
qc->err_mask |= ac_err_mask(drv_stat);
ata_qc_complete(qc);
break;
}

13
include/linux/libata.h
View File

@ -136,6 +136,8 @@ enum {
ATA_TMOUT_BOOT_QUICK = 7 * HZ, /* hueristic */
ATA_TMOUT_CDB = 30 * HZ,
ATA_TMOUT_CDB_QUICK = 5 * HZ,
ATA_TMOUT_INTERNAL = 30 * HZ,
ATA_TMOUT_INTERNAL_QUICK = 5 * HZ,
/* ATA bus states */
BUS_UNKNOWN = 0,
@ -195,7 +197,7 @@ struct ata_port;
struct ata_queued_cmd;
/* typedefs */
typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc, unsigned int err_mask);
typedef int (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
struct ata_ioports {
unsigned long cmd_addr;
@ -280,9 +282,9 @@ struct ata_queued_cmd {
/* DO NOT iterate over __sg manually, use ata_for_each_sg() */
struct scatterlist *__sg;
ata_qc_cb_t complete_fn;
unsigned int err_mask;
struct completion *waiting;
ata_qc_cb_t complete_fn;
void *private_data;
};
@ -331,8 +333,6 @@ struct ata_port {
u8 ctl; /* cache of ATA control register */
u8 last_ctl; /* Cache last written value */
unsigned int bus_state;
unsigned int port_state;
unsigned int pio_mask;
unsigned int mwdma_mask;
unsigned int udma_mask;
@ -478,7 +478,7 @@ extern void ata_bmdma_start (struct ata_queued_cmd *qc);
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, unsigned int err_mask);
extern void ata_qc_complete(struct ata_queued_cmd *qc);
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 *));
@ -670,6 +670,7 @@ static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
qc->cursect = qc->cursg = qc->cursg_ofs = 0;
qc->nsect = 0;
qc->nbytes = qc->curbytes = 0;
qc->err_mask = 0;
ata_tf_init(qc->ap, &qc->tf, qc->dev->devno);
}