#include <linux/scatterlist.h>
#include <linux/io.h>
#include <linux/async.h>
+#include <linux/log2.h>
+#include <linux/slab.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_host.h>
static int atapi_enabled = 1;
module_param(atapi_enabled, int, 0444);
-MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)");
+MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on [default])");
static int atapi_dmadir = 0;
module_param(atapi_dmadir, int, 0444);
-MODULE_PARM_DESC(atapi_dmadir, "Enable ATAPI DMADIR bridge support (0=off, 1=on)");
+MODULE_PARM_DESC(atapi_dmadir, "Enable ATAPI DMADIR bridge support (0=off [default], 1=on)");
int atapi_passthru16 = 1;
module_param(atapi_passthru16, int, 0444);
-MODULE_PARM_DESC(atapi_passthru16, "Enable ATA_16 passthru for ATAPI devices; on by default (0=off, 1=on)");
+MODULE_PARM_DESC(atapi_passthru16, "Enable ATA_16 passthru for ATAPI devices (0=off, 1=on [default])");
int libata_fua = 0;
module_param_named(fua, libata_fua, int, 0444);
-MODULE_PARM_DESC(fua, "FUA support (0=off, 1=on)");
+MODULE_PARM_DESC(fua, "FUA support (0=off [default], 1=on)");
static int ata_ignore_hpa;
module_param_named(ignore_hpa, ata_ignore_hpa, int, 0644);
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");
+MODULE_PARM_DESC(noacpi, "Disable the use of ACPI in probe/suspend/resume (0=off [default], 1=on)");
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_PARM_DESC(allow_tpm, "Permit the use of TPM commands (0=off [default], 1=on)");
MODULE_AUTHOR("Jeff Garzik");
MODULE_DESCRIPTION("Library module for ATA devices");
head = tf->device & 0xf;
sect = tf->lbal;
- block = (cyl * dev->heads + head) * dev->sectors + sect;
+ if (!sect) {
+ ata_dev_printk(dev, KERN_WARNING, "device reported "
+ "invalid CHS sector 0\n");
+ sect = 1; /* oh well */
+ }
+
+ block = (cyl * dev->heads + head) * dev->sectors + sect - 1;
}
return block;
*
* We follow the current spec and consider that 0x69/0x96
* identifies a port multiplier and 0x3c/0xc3 a SEMB device.
+ * Unfortunately, WDC WD1600JS-62MHB5 (a hard drive) reports
+ * SEMB signature. This is worked around in
+ * ata_dev_read_id().
*/
if ((tf->lbam == 0) && (tf->lbah == 0)) {
DPRINTK("found ATA device by sig\n");
}
if ((tf->lbam == 0x3c) && (tf->lbah == 0xc3)) {
- printk(KERN_INFO "ata: SEMB device ignored\n");
- return ATA_DEV_SEMB_UNSUP; /* not yet */
+ DPRINTK("found SEMB device by sig (could be ATA device)\n");
+ return ATA_DEV_SEMB;
}
DPRINTK("unknown device\n");
return rc;
}
+ dev->n_native_sectors = native_sectors;
/* nothing to do? */
if (native_sectors <= sectors || !ata_ignore_hpa) {
/*
* Process compact flash extended modes
*/
- int pio = id[163] & 0x7;
- int dma = (id[163] >> 3) & 7;
+ int pio = (id[ATA_ID_CFA_MODES] >> 0) & 0x7;
+ int dma = (id[ATA_ID_CFA_MODES] >> 3) & 0x7;
if (pio)
pio_mask |= (1 << 5);
* Check if the current speed of the device requires IORDY. Used
* by various controllers for chip configuration.
*/
-
unsigned int ata_pio_need_iordy(const struct ata_device *adev)
{
- /* Controller doesn't support IORDY. Probably a pointless check
- as the caller should know this */
+ /* Don't set IORDY if we're preparing for reset. IORDY may
+ * lead to controller lock up on certain controllers if the
+ * port is not occupied. See bko#11703 for details.
+ */
+ if (adev->link->ap->pflags & ATA_PFLAG_RESETTING)
+ return 0;
+ /* Controller doesn't support IORDY. Probably a pointless
+ * check as the caller should know this.
+ */
if (adev->link->ap->flags & ATA_FLAG_NO_IORDY)
return 0;
/* CF spec. r4.1 Table 22 says no iordy on PIO5 and PIO6. */
* Compute the highest mode possible if we are not using iordy. Return
* -1 if no iordy mode is available.
*/
-
static u32 ata_pio_mask_no_iordy(const struct ata_device *adev)
{
/* If we have no drive specific rule, then PIO 2 is non IORDY */
struct ata_taskfile tf;
unsigned int err_mask = 0;
const char *reason;
+ bool is_semb = class == ATA_DEV_SEMB;
int may_fallback = 1, tried_spinup = 0;
int rc;
ata_tf_init(dev, &tf);
switch (class) {
+ case ATA_DEV_SEMB:
+ class = ATA_DEV_ATA; /* some hard drives report SEMB sig */
case ATA_DEV_ATA:
tf.command = ATA_CMD_ID_ATA;
break;
return -ENOENT;
}
+ if (is_semb) {
+ ata_dev_printk(dev, KERN_INFO, "IDENTIFY failed on "
+ "device w/ SEMB sig, disabled\n");
+ /* SEMB is not supported yet */
+ *p_class = ATA_DEV_SEMB_UNSUP;
+ return 0;
+ }
+
if ((err_mask == AC_ERR_DEV) && (tf.feature & ATA_ABORTED)) {
/* Device or controller might have reported
* the wrong device class. Give a shot at the
* Some drives were very specific about that exact sequence.
*
* Note that ATA4 says lba is mandatory so the second check
- * shoud never trigger.
+ * should never trigger.
*/
if (ata_id_major_version(id) < 4 || !ata_id_has_lba(id)) {
err_mask = ata_dev_init_params(dev, id[3], id[6]);
return ((ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(dev->id)));
}
-static void ata_dev_config_ncq(struct ata_device *dev,
+static int ata_dev_config_ncq(struct ata_device *dev,
char *desc, size_t desc_sz)
{
struct ata_port *ap = dev->link->ap;
int hdepth = 0, ddepth = ata_id_queue_depth(dev->id);
+ unsigned int err_mask;
+ char *aa_desc = "";
if (!ata_id_has_ncq(dev->id)) {
desc[0] = '\0';
- return;
+ return 0;
}
if (dev->horkage & ATA_HORKAGE_NONCQ) {
snprintf(desc, desc_sz, "NCQ (not used)");
- return;
+ return 0;
}
if (ap->flags & ATA_FLAG_NCQ) {
hdepth = min(ap->scsi_host->can_queue, ATA_MAX_QUEUE - 1);
dev->flags |= ATA_DFLAG_NCQ;
}
+ if (!(dev->horkage & ATA_HORKAGE_BROKEN_FPDMA_AA) &&
+ (ap->flags & ATA_FLAG_FPDMA_AA) &&
+ ata_id_has_fpdma_aa(dev->id)) {
+ err_mask = ata_dev_set_feature(dev, SETFEATURES_SATA_ENABLE,
+ SATA_FPDMA_AA);
+ if (err_mask) {
+ ata_dev_printk(dev, KERN_ERR, "failed to enable AA"
+ "(error_mask=0x%x)\n", err_mask);
+ if (err_mask != AC_ERR_DEV) {
+ dev->horkage |= ATA_HORKAGE_BROKEN_FPDMA_AA;
+ return -EIO;
+ }
+ } else
+ aa_desc = ", AA";
+ }
+
if (hdepth >= ddepth)
- snprintf(desc, desc_sz, "NCQ (depth %d)", ddepth);
+ snprintf(desc, desc_sz, "NCQ (depth %d)%s", ddepth, aa_desc);
else
- snprintf(desc, desc_sz, "NCQ (depth %d/%d)", hdepth, ddepth);
+ snprintf(desc, desc_sz, "NCQ (depth %d/%d)%s", hdepth,
+ ddepth, aa_desc);
+ return 0;
}
/**
dev->cylinders = 0;
dev->heads = 0;
dev->sectors = 0;
+ dev->multi_count = 0;
/*
* common ATA, ATAPI feature tests
/* ATA-specific feature tests */
if (dev->class == ATA_DEV_ATA) {
if (ata_id_is_cfa(id)) {
- if (id[162] & 1) /* CPRM may make this media unusable */
+ /* CPRM may make this media unusable */
+ if (id[ATA_ID_CFA_KEY_MGMT] & 1)
ata_dev_printk(dev, KERN_WARNING,
"supports DRM functions and may "
"not be fully accessable.\n");
dev->n_sectors = ata_id_n_sectors(id);
- if (dev->id[59] & 0x100)
- dev->multi_count = dev->id[59] & 0xff;
+ /* get current R/W Multiple count setting */
+ if ((dev->id[47] >> 8) == 0x80 && (dev->id[59] & 0x100)) {
+ unsigned int max = dev->id[47] & 0xff;
+ unsigned int cnt = dev->id[59] & 0xff;
+ /* only recognize/allow powers of two here */
+ if (is_power_of_2(max) && is_power_of_2(cnt))
+ if (cnt <= max)
+ dev->multi_count = cnt;
+ }
if (ata_id_has_lba(id)) {
const char *lba_desc;
- char ncq_desc[20];
+ char ncq_desc[24];
lba_desc = "LBA";
dev->flags |= ATA_DFLAG_LBA;
}
/* config NCQ */
- ata_dev_config_ncq(dev, ncq_desc, sizeof(ncq_desc));
+ rc = ata_dev_config_ncq(dev, ncq_desc, sizeof(ncq_desc));
+ if (rc)
+ return rc;
/* print device info to dmesg */
if (ata_msg_drv(ap) && print_info) {
int ata_timing_compute(struct ata_device *adev, unsigned short speed,
struct ata_timing *t, int T, int UT)
{
+ const u16 *id = adev->id;
const struct ata_timing *s;
struct ata_timing p;
* PIO/MW_DMA cycle timing.
*/
- if (adev->id[ATA_ID_FIELD_VALID] & 2) { /* EIDE drive */
+ if (id[ATA_ID_FIELD_VALID] & 2) { /* EIDE drive */
memset(&p, 0, sizeof(p));
+
if (speed >= XFER_PIO_0 && speed <= XFER_SW_DMA_0) {
- if (speed <= XFER_PIO_2) p.cycle = p.cyc8b = adev->id[ATA_ID_EIDE_PIO];
- else p.cycle = p.cyc8b = adev->id[ATA_ID_EIDE_PIO_IORDY];
- } else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2) {
- p.cycle = adev->id[ATA_ID_EIDE_DMA_MIN];
- }
+ if (speed <= XFER_PIO_2)
+ p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO];
+ else if ((speed <= XFER_PIO_4) ||
+ (speed == XFER_PIO_5 && !ata_id_is_cfa(id)))
+ p.cycle = p.cyc8b = id[ATA_ID_EIDE_PIO_IORDY];
+ } else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2)
+ p.cycle = id[ATA_ID_EIDE_DMA_MIN];
+
ata_timing_merge(&p, t, t, ATA_TIMING_CYCLE | ATA_TIMING_CYC8B);
}
static int ata_dev_set_mode(struct ata_device *dev)
{
+ struct ata_port *ap = dev->link->ap;
struct ata_eh_context *ehc = &dev->link->eh_context;
+ const bool nosetxfer = dev->horkage & ATA_HORKAGE_NOSETXFER;
const char *dev_err_whine = "";
int ign_dev_err = 0;
- unsigned int err_mask;
+ unsigned int err_mask = 0;
int rc;
dev->flags &= ~ATA_DFLAG_PIO;
if (dev->xfer_shift == ATA_SHIFT_PIO)
dev->flags |= ATA_DFLAG_PIO;
- err_mask = ata_dev_set_xfermode(dev);
+ if (nosetxfer && ap->flags & ATA_FLAG_SATA && ata_id_is_sata(dev->id))
+ dev_err_whine = " (SET_XFERMODE skipped)";
+ else {
+ if (nosetxfer)
+ ata_dev_printk(dev, KERN_WARNING,
+ "NOSETXFER but PATA detected - can't "
+ "skip SETXFER, might malfunction\n");
+ err_mask = ata_dev_set_xfermode(dev);
+ }
if (err_mask & ~AC_ERR_DEV)
goto fail;
int sata_link_resume(struct ata_link *link, const unsigned long *params,
unsigned long deadline)
{
+ int tries = ATA_LINK_RESUME_TRIES;
u32 scontrol, serror;
int rc;
if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
return rc;
- scontrol = (scontrol & 0x0f0) | 0x300;
+ /*
+ * Writes to SControl sometimes get ignored under certain
+ * controllers (ata_piix SIDPR). Make sure DET actually is
+ * cleared.
+ */
+ do {
+ scontrol = (scontrol & 0x0f0) | 0x300;
+ if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol)))
+ return rc;
+ /*
+ * Some PHYs react badly if SStatus is pounded
+ * immediately after resuming. Delay 200ms before
+ * debouncing.
+ */
+ msleep(200);
- if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol)))
- return rc;
+ /* is SControl restored correctly? */
+ if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
+ return rc;
+ } while ((scontrol & 0xf0f) != 0x300 && --tries);
- /* Some PHYs react badly if SStatus is pounded immediately
- * after resuming. Delay 200ms before debouncing.
- */
- msleep(200);
+ if ((scontrol & 0xf0f) != 0x300) {
+ ata_link_printk(link, KERN_ERR,
+ "failed to resume link (SControl %X)\n",
+ scontrol);
+ return 0;
+ }
+
+ if (tries < ATA_LINK_RESUME_TRIES)
+ ata_link_printk(link, KERN_WARNING,
+ "link resume succeeded after %d retries\n",
+ ATA_LINK_RESUME_TRIES - tries);
if ((rc = sata_link_debounce(link, params, deadline)))
return rc;
unsigned int readid_flags)
{
u64 n_sectors = dev->n_sectors;
+ u64 n_native_sectors = dev->n_native_sectors;
int rc;
if (!ata_dev_enabled(dev))
/* fail early if !ATA && !ATAPI to avoid issuing [P]IDENTIFY to PMP */
if (ata_class_enabled(new_class) &&
- new_class != ATA_DEV_ATA && new_class != ATA_DEV_ATAPI) {
+ new_class != ATA_DEV_ATA &&
+ new_class != ATA_DEV_ATAPI &&
+ new_class != ATA_DEV_SEMB) {
ata_dev_printk(dev, KERN_INFO, "class mismatch %u != %u\n",
dev->class, new_class);
rc = -ENODEV;
/* verify n_sectors hasn't changed */
if (dev->class == ATA_DEV_ATA && n_sectors &&
dev->n_sectors != n_sectors) {
- ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch "
+ ata_dev_printk(dev, KERN_WARNING, "n_sectors mismatch "
"%llu != %llu\n",
(unsigned long long)n_sectors,
(unsigned long long)dev->n_sectors);
-
- /* restore original n_sectors */
- dev->n_sectors = n_sectors;
-
- rc = -ENODEV;
- goto fail;
+ /*
+ * Something could have caused HPA to be unlocked
+ * involuntarily. If n_native_sectors hasn't changed
+ * and the new size matches it, keep the device.
+ */
+ if (dev->n_native_sectors == n_native_sectors &&
+ dev->n_sectors > n_sectors &&
+ dev->n_sectors == n_native_sectors) {
+ ata_dev_printk(dev, KERN_WARNING,
+ "new n_sectors matches native, probably "
+ "late HPA unlock, continuing\n");
+ /* keep using the old n_sectors */
+ dev->n_sectors = n_sectors;
+ } else {
+ /* restore original n_[native]_sectors and fail */
+ dev->n_native_sectors = n_native_sectors;
+ dev->n_sectors = n_sectors;
+ rc = -ENODEV;
+ goto fail;
+ }
}
return 0;
{ "WDC WD2500JD-00HBB0", "WD-WMAL71490727", ATA_HORKAGE_BROKEN_HPA },
{ "MAXTOR 6L080L4", "A93.0500", ATA_HORKAGE_BROKEN_HPA },
+ /* this one allows HPA unlocking but fails IOs on the area */
+ { "OCZ-VERTEX", "1.30", ATA_HORKAGE_BROKEN_HPA },
+
/* Devices which report 1 sector over size HPA */
{ "ST340823A", NULL, ATA_HORKAGE_HPA_SIZE, },
{ "ST320413A", NULL, ATA_HORKAGE_HPA_SIZE, },
/* Devices which aren't very happy with higher link speeds */
{ "WD My Book", NULL, ATA_HORKAGE_1_5_GBPS, },
+ /*
+ * Devices which choke on SETXFER. Applies only if both the
+ * device and controller are SATA.
+ */
+ { "PIONEER DVD-RW DVRTD08", "1.00", ATA_HORKAGE_NOSETXFER },
+
/* End Marker */
{ }
};
*/
void ata_qc_free(struct ata_queued_cmd *qc)
{
- struct ata_port *ap = qc->ap;
+ struct ata_port *ap;
unsigned int tag;
WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
+ ap = qc->ap;
qc->flags = 0;
tag = qc->tag;
void __ata_qc_complete(struct ata_queued_cmd *qc)
{
- struct ata_port *ap = qc->ap;
- struct ata_link *link = qc->dev->link;
+ struct ata_port *ap;
+ struct ata_link *link;
WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE));
+ ap = qc->ap;
+ link = qc->dev->link;
if (likely(qc->flags & ATA_QCFLAG_DMAMAP))
ata_sg_clean(qc);
struct ata_device *dev = qc->dev;
struct ata_eh_info *ehi = &dev->link->eh_info;
- WARN_ON_ONCE(ap->pflags & ATA_PFLAG_FROZEN);
-
if (unlikely(qc->err_mask))
qc->flags |= ATA_QCFLAG_FAILED;
if (unlikely(qc->flags & ATA_QCFLAG_FAILED)) {
- if (!ata_tag_internal(qc->tag)) {
- /* always fill result TF for failed qc */
- fill_result_tf(qc);
+ /* always fill result TF for failed qc */
+ fill_result_tf(qc);
+
+ if (!ata_tag_internal(qc->tag))
ata_qc_schedule_eh(qc);
- return;
- }
+ else
+ __ata_qc_complete(qc);
+ return;
}
+ WARN_ON_ONCE(ap->pflags & ATA_PFLAG_FROZEN);
+
/* read result TF if requested */
if (qc->flags & ATA_QCFLAG_RESULT_TF)
fill_result_tf(qc);
{
int nr_done = 0;
u32 done_mask;
- int i;
done_mask = ap->qc_active ^ qc_active;
return -EINVAL;
}
- for (i = 0; i < ATA_MAX_QUEUE; i++) {
+ while (done_mask) {
struct ata_queued_cmd *qc;
+ unsigned int tag = __ffs(done_mask);
- if (!(done_mask & (1 << i)))
- continue;
-
- if ((qc = ata_qc_from_tag(ap, i))) {
+ qc = ata_qc_from_tag(ap, tag);
+ if (qc) {
ata_qc_complete(qc);
nr_done++;
}
+ done_mask &= ~(1 << tag);
}
return nr_done;
dev->link = link;
dev->devno = dev - link->device;
+#ifdef CONFIG_ATA_ACPI
+ dev->gtf_filter = ata_acpi_gtf_filter;
+#endif
ata_dev_init(dev);
}
}
ata_port_printk(ap, KERN_INFO, "DUMMY\n");
}
- /* perform each probe synchronously */
- DPRINTK("probe begin\n");
+ /* perform each probe asynchronously */
for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap = host->ports[i];
async_schedule(async_port_probe, ap);
}
- DPRINTK("probe end\n");
return 0;
}
{
ata_parse_force_param();
+ /*
+ * FIXME: In UP case, there is only one workqueue thread and if you
+ * have more than one PIO device, latency is bloody awful, with
+ * occasional multi-second "hiccups" as one PIO device waits for
+ * another. It's an ugly wart that users DO occasionally complain
+ * about; luckily most users have at most one PIO polled device.
+ */
ata_wq = create_workqueue("ata");
if (!ata_wq)
goto free_force_tbl;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff