#include <linux/workqueue.h>
#include <linux/scatterlist.h>
#include <linux/io.h>
+#include <linux/async.h>
+#include <linux/log2.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_host.h>
MODULE_VERSION(DRV_VERSION);
-/*
- * Iterator helpers. Don't use directly.
+static bool ata_sstatus_online(u32 sstatus)
+{
+ return (sstatus & 0xf) == 0x3;
+}
+
+/**
+ * ata_link_next - link iteration helper
+ * @link: the previous link, NULL to start
+ * @ap: ATA port containing links to iterate
+ * @mode: iteration mode, one of ATA_LITER_*
*
- * LOCKING:
- * Host lock or EH context.
+ * LOCKING:
+ * Host lock or EH context.
+ *
+ * RETURNS:
+ * Pointer to the next link.
*/
-struct ata_link *__ata_port_next_link(struct ata_port *ap,
- struct ata_link *link, bool dev_only)
+struct ata_link *ata_link_next(struct ata_link *link, struct ata_port *ap,
+ enum ata_link_iter_mode mode)
{
+ BUG_ON(mode != ATA_LITER_EDGE &&
+ mode != ATA_LITER_PMP_FIRST && mode != ATA_LITER_HOST_FIRST);
+
/* NULL link indicates start of iteration */
- if (!link) {
- if (dev_only && sata_pmp_attached(ap))
- return ap->pmp_link;
- return &ap->link;
- }
+ if (!link)
+ switch (mode) {
+ case ATA_LITER_EDGE:
+ case ATA_LITER_PMP_FIRST:
+ if (sata_pmp_attached(ap))
+ return ap->pmp_link;
+ /* fall through */
+ case ATA_LITER_HOST_FIRST:
+ return &ap->link;
+ }
- /* we just iterated over the host master link, what's next? */
- if (link == &ap->link) {
- if (!sata_pmp_attached(ap)) {
- if (unlikely(ap->slave_link) && !dev_only)
+ /* we just iterated over the host link, what's next? */
+ if (link == &ap->link)
+ switch (mode) {
+ case ATA_LITER_HOST_FIRST:
+ if (sata_pmp_attached(ap))
+ return ap->pmp_link;
+ /* fall through */
+ case ATA_LITER_PMP_FIRST:
+ if (unlikely(ap->slave_link))
return ap->slave_link;
+ /* fall through */
+ case ATA_LITER_EDGE:
return NULL;
}
- return ap->pmp_link;
- }
/* slave_link excludes PMP */
if (unlikely(link == ap->slave_link))
return NULL;
- /* iterate to the next PMP link */
+ /* we were over a PMP link */
if (++link < ap->pmp_link + ap->nr_pmp_links)
return link;
+
+ if (mode == ATA_LITER_PMP_FIRST)
+ return &ap->link;
+
return NULL;
}
/**
+ * ata_dev_next - device iteration helper
+ * @dev: the previous device, NULL to start
+ * @link: ATA link containing devices to iterate
+ * @mode: iteration mode, one of ATA_DITER_*
+ *
+ * LOCKING:
+ * Host lock or EH context.
+ *
+ * RETURNS:
+ * Pointer to the next device.
+ */
+struct ata_device *ata_dev_next(struct ata_device *dev, struct ata_link *link,
+ enum ata_dev_iter_mode mode)
+{
+ BUG_ON(mode != ATA_DITER_ENABLED && mode != ATA_DITER_ENABLED_REVERSE &&
+ mode != ATA_DITER_ALL && mode != ATA_DITER_ALL_REVERSE);
+
+ /* NULL dev indicates start of iteration */
+ if (!dev)
+ switch (mode) {
+ case ATA_DITER_ENABLED:
+ case ATA_DITER_ALL:
+ dev = link->device;
+ goto check;
+ case ATA_DITER_ENABLED_REVERSE:
+ case ATA_DITER_ALL_REVERSE:
+ dev = link->device + ata_link_max_devices(link) - 1;
+ goto check;
+ }
+
+ next:
+ /* move to the next one */
+ switch (mode) {
+ case ATA_DITER_ENABLED:
+ case ATA_DITER_ALL:
+ if (++dev < link->device + ata_link_max_devices(link))
+ goto check;
+ return NULL;
+ case ATA_DITER_ENABLED_REVERSE:
+ case ATA_DITER_ALL_REVERSE:
+ if (--dev >= link->device)
+ goto check;
+ return NULL;
+ }
+
+ check:
+ if ((mode == ATA_DITER_ENABLED || mode == ATA_DITER_ENABLED_REVERSE) &&
+ !ata_dev_enabled(dev))
+ goto next;
+ return dev;
+}
+
+/**
* ata_dev_phys_link - find physical link for a device
* @dev: ATA device to look up physical link for
*
static const char * const spd_str[] = {
"1.5 Gbps",
"3.0 Gbps",
+ "6.0 Gbps",
};
if (spd == 0 || (spd - 1) >= ARRAY_SIZE(spd_str))
return spd_str[spd - 1];
}
-void ata_dev_disable(struct ata_device *dev)
-{
- if (ata_dev_enabled(dev)) {
- if (ata_msg_drv(dev->link->ap))
- ata_dev_printk(dev, KERN_WARNING, "disabled\n");
- ata_acpi_on_disable(dev);
- ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO0 |
- ATA_DNXFER_QUIET);
- dev->class++;
- }
-}
-
static int ata_dev_set_dipm(struct ata_device *dev, enum link_pm policy)
{
struct ata_link *link = dev->link;
for (i = 0; i < host->n_ports; i++) {
ap = host->ports[i];
- ata_port_for_each_link(link, ap) {
- ata_link_for_each_dev(dev, link)
+ ata_for_each_link(link, ap, EDGE) {
+ ata_for_each_dev(dev, link, ALL)
ata_dev_disable_pm(dev);
}
}
*
* 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");
{
if (ata_id_has_lba(id)) {
if (ata_id_has_lba48(id))
- return ata_id_u64(id, 100);
+ return ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
else
- return ata_id_u32(id, 60);
+ return ata_id_u32(id, ATA_ID_LBA_CAPACITY);
} else {
if (ata_id_current_chs_valid(id))
- return ata_id_u32(id, 57);
+ return id[ATA_ID_CUR_CYLS] * id[ATA_ID_CUR_HEADS] *
+ id[ATA_ID_CUR_SECTORS];
else
- return id[1] * id[3] * id[6];
+ return id[ATA_ID_CYLS] * id[ATA_ID_HEADS] *
+ id[ATA_ID_SECTORS];
}
}
/*
* 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);
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. */
+ if (ata_id_is_cfa(adev->id)
+ && (adev->pio_mode == XFER_PIO_5 || adev->pio_mode == XFER_PIO_6))
+ return 0;
/* PIO3 and higher it is mandatory */
if (adev->pio_mode > XFER_PIO_2)
return 1;
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
return rc;
}
+static int ata_do_link_spd_horkage(struct ata_device *dev)
+{
+ struct ata_link *plink = ata_dev_phys_link(dev);
+ u32 target, target_limit;
+
+ if (!sata_scr_valid(plink))
+ return 0;
+
+ if (dev->horkage & ATA_HORKAGE_1_5_GBPS)
+ target = 1;
+ else
+ return 0;
+
+ target_limit = (1 << target) - 1;
+
+ /* if already on stricter limit, no need to push further */
+ if (plink->sata_spd_limit <= target_limit)
+ return 0;
+
+ plink->sata_spd_limit = target_limit;
+
+ /* Request another EH round by returning -EAGAIN if link is
+ * going faster than the target speed. Forward progress is
+ * guaranteed by setting sata_spd_limit to target_limit above.
+ */
+ if (plink->sata_spd > target) {
+ ata_dev_printk(dev, KERN_INFO,
+ "applying link speed limit horkage to %s\n",
+ sata_spd_string(target));
+ return -EAGAIN;
+ }
+ return 0;
+}
+
static inline u8 ata_dev_knobble(struct ata_device *dev)
{
struct ata_port *ap = dev->link->ap;
return 0;
}
+ rc = ata_do_link_spd_horkage(dev);
+ if (rc)
+ return rc;
+
/* let ACPI work its magic */
rc = ata_acpi_on_devcfg(dev);
if (rc)
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;
ata_port_probe(ap);
- ata_link_for_each_dev(dev, &ap->link)
+ ata_for_each_dev(dev, &ap->link, ALL)
tries[dev->devno] = ATA_PROBE_MAX_TRIES;
retry:
- ata_link_for_each_dev(dev, &ap->link) {
+ ata_for_each_dev(dev, &ap->link, ALL) {
/* If we issue an SRST then an ATA drive (not ATAPI)
* may change configuration and be in PIO0 timing. If
* we do a hard reset (or are coming from power on)
/* reset and determine device classes */
ap->ops->phy_reset(ap);
- ata_link_for_each_dev(dev, &ap->link) {
+ ata_for_each_dev(dev, &ap->link, ALL) {
if (!(ap->flags & ATA_FLAG_DISABLED) &&
dev->class != ATA_DEV_UNKNOWN)
classes[dev->devno] = dev->class;
specific sequence bass-ackwards so that PDIAG- is released by
the slave device */
- ata_link_for_each_dev_reverse(dev, &ap->link) {
+ ata_for_each_dev(dev, &ap->link, ALL_REVERSE) {
if (tries[dev->devno])
dev->class = classes[dev->devno];
if (ap->ops->cable_detect)
ap->cbl = ap->ops->cable_detect(ap);
- /* We may have SATA bridge glue hiding here irrespective of the
- reported cable types and sensed types */
- ata_link_for_each_dev(dev, &ap->link) {
- if (!ata_dev_enabled(dev))
- continue;
- /* SATA drives indicate we have a bridge. We don't know which
- end of the link the bridge is which is a problem */
+ /* We may have SATA bridge glue hiding here irrespective of
+ * the reported cable types and sensed types. When SATA
+ * drives indicate we have a bridge, we don't know which end
+ * of the link the bridge is which is a problem.
+ */
+ ata_for_each_dev(dev, &ap->link, ENABLED)
if (ata_id_is_sata(dev->id))
ap->cbl = ATA_CBL_SATA;
- }
/* After the identify sequence we can now set up the devices. We do
this in the normal order so that the user doesn't get confused */
- ata_link_for_each_dev(dev, &ap->link) {
- if (!ata_dev_enabled(dev))
- continue;
-
+ ata_for_each_dev(dev, &ap->link, ENABLED) {
ap->link.eh_context.i.flags |= ATA_EHI_PRINTINFO;
rc = ata_dev_configure(dev);
ap->link.eh_context.i.flags &= ~ATA_EHI_PRINTINFO;
if (rc)
goto fail;
- ata_link_for_each_dev(dev, &ap->link)
- if (ata_dev_enabled(dev))
- return 0;
+ ata_for_each_dev(dev, &ap->link, ENABLED)
+ return 0;
/* no device present, disable port */
ata_port_disable(ap);
/* This is the last chance, better to slow
* down than lose it.
*/
- sata_down_spd_limit(&ap->link);
+ sata_down_spd_limit(&ap->link, 0);
ata_down_xfermask_limit(dev, ATA_DNXFER_PIO);
}
}
/**
* sata_down_spd_limit - adjust SATA spd limit downward
* @link: Link to adjust SATA spd limit for
+ * @spd_limit: Additional limit
*
* Adjust SATA spd limit of @link downward. Note that this
* function only adjusts the limit. The change must be applied
* using sata_set_spd().
*
+ * If @spd_limit is non-zero, the speed is limited to equal to or
+ * lower than @spd_limit if such speed is supported. If
+ * @spd_limit is slower than any supported speed, only the lowest
+ * supported speed is allowed.
+ *
* LOCKING:
* Inherited from caller.
*
* RETURNS:
* 0 on success, negative errno on failure
*/
-int sata_down_spd_limit(struct ata_link *link)
+int sata_down_spd_limit(struct ata_link *link, u32 spd_limit)
{
u32 sstatus, spd, mask;
- int rc, highbit;
+ int rc, bit;
if (!sata_scr_valid(link))
return -EOPNOTSUPP;
* If not, use cached value in link->sata_spd.
*/
rc = sata_scr_read(link, SCR_STATUS, &sstatus);
- if (rc == 0)
+ if (rc == 0 && ata_sstatus_online(sstatus))
spd = (sstatus >> 4) & 0xf;
else
spd = link->sata_spd;
return -EINVAL;
/* unconditionally mask off the highest bit */
- highbit = fls(mask) - 1;
- mask &= ~(1 << highbit);
+ bit = fls(mask) - 1;
+ mask &= ~(1 << bit);
/* Mask off all speeds higher than or equal to the current
* one. Force 1.5Gbps if current SPD is not available.
if (!mask)
return -EINVAL;
+ if (spd_limit) {
+ if (mask & ((1 << spd_limit) - 1))
+ mask &= (1 << spd_limit) - 1;
+ else {
+ bit = ffs(mask) - 1;
+ mask = 1 << bit;
+ }
+ }
+
link->sata_spd_limit = mask;
ata_link_printk(link, KERN_WARNING, "limiting SATA link speed to %s\n",
*/
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_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_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_MW_DMA_4, 25, 0, 0, 0, 55, 20, 80, 0 },
-
-/* { XFER_UDMA_SLOW, 0, 0, 0, 0, 0, 0, 0, 150 }, */
- { 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 },
+/* { XFER_PIO_SLOW, 120, 290, 240, 960, 290, 240, 0, 960, 0 }, */
+ { XFER_PIO_0, 70, 290, 240, 600, 165, 150, 0, 600, 0 },
+ { XFER_PIO_1, 50, 290, 93, 383, 125, 100, 0, 383, 0 },
+ { XFER_PIO_2, 30, 290, 40, 330, 100, 90, 0, 240, 0 },
+ { XFER_PIO_3, 30, 80, 70, 180, 80, 70, 0, 180, 0 },
+ { XFER_PIO_4, 25, 70, 25, 120, 70, 25, 0, 120, 0 },
+ { XFER_PIO_5, 15, 65, 25, 100, 65, 25, 0, 100, 0 },
+ { XFER_PIO_6, 10, 55, 20, 80, 55, 20, 0, 80, 0 },
+
+ { XFER_SW_DMA_0, 120, 0, 0, 0, 480, 480, 50, 960, 0 },
+ { XFER_SW_DMA_1, 90, 0, 0, 0, 240, 240, 30, 480, 0 },
+ { XFER_SW_DMA_2, 60, 0, 0, 0, 120, 120, 20, 240, 0 },
+
+ { XFER_MW_DMA_0, 60, 0, 0, 0, 215, 215, 20, 480, 0 },
+ { XFER_MW_DMA_1, 45, 0, 0, 0, 80, 50, 5, 150, 0 },
+ { XFER_MW_DMA_2, 25, 0, 0, 0, 70, 25, 5, 120, 0 },
+ { XFER_MW_DMA_3, 25, 0, 0, 0, 65, 25, 5, 100, 0 },
+ { XFER_MW_DMA_4, 25, 0, 0, 0, 55, 20, 5, 80, 0 },
+
+/* { XFER_UDMA_SLOW, 0, 0, 0, 0, 0, 0, 0, 0, 150 }, */
+ { XFER_UDMA_0, 0, 0, 0, 0, 0, 0, 0, 0, 120 },
+ { XFER_UDMA_1, 0, 0, 0, 0, 0, 0, 0, 0, 80 },
+ { XFER_UDMA_2, 0, 0, 0, 0, 0, 0, 0, 0, 60 },
+ { XFER_UDMA_3, 0, 0, 0, 0, 0, 0, 0, 0, 45 },
+ { XFER_UDMA_4, 0, 0, 0, 0, 0, 0, 0, 0, 30 },
+ { XFER_UDMA_5, 0, 0, 0, 0, 0, 0, 0, 0, 20 },
+ { XFER_UDMA_6, 0, 0, 0, 0, 0, 0, 0, 0, 15 },
{ 0xFF }
};
static void ata_timing_quantize(const struct ata_timing *t, struct ata_timing *q, int T, int UT)
{
- q->setup = EZ(t->setup * 1000, T);
- q->act8b = EZ(t->act8b * 1000, T);
- q->rec8b = EZ(t->rec8b * 1000, T);
- q->cyc8b = EZ(t->cyc8b * 1000, T);
- q->active = EZ(t->active * 1000, T);
- q->recover = EZ(t->recover * 1000, T);
- q->cycle = EZ(t->cycle * 1000, T);
- q->udma = EZ(t->udma * 1000, UT);
+ q->setup = EZ(t->setup * 1000, T);
+ q->act8b = EZ(t->act8b * 1000, T);
+ q->rec8b = EZ(t->rec8b * 1000, T);
+ q->cyc8b = EZ(t->cyc8b * 1000, T);
+ q->active = EZ(t->active * 1000, T);
+ q->recover = EZ(t->recover * 1000, T);
+ q->dmack_hold = EZ(t->dmack_hold * 1000, T);
+ q->cycle = EZ(t->cycle * 1000, T);
+ q->udma = EZ(t->udma * 1000, UT);
}
void ata_timing_merge(const struct ata_timing *a, const struct ata_timing *b,
if (what & ATA_TIMING_CYC8B ) m->cyc8b = max(a->cyc8b, b->cyc8b);
if (what & ATA_TIMING_ACTIVE ) m->active = max(a->active, b->active);
if (what & ATA_TIMING_RECOVER) m->recover = max(a->recover, b->recover);
+ if (what & ATA_TIMING_DMACK_HOLD) m->dmack_hold = max(a->dmack_hold, b->dmack_hold);
if (what & ATA_TIMING_CYCLE ) m->cycle = max(a->cycle, b->cycle);
if (what & ATA_TIMING_UDMA ) m->udma = max(a->udma, b->udma);
}
int rc = 0, used_dma = 0, found = 0;
/* step 1: calculate xfer_mask */
- ata_link_for_each_dev(dev, link) {
+ ata_for_each_dev(dev, link, ENABLED) {
unsigned long pio_mask, dma_mask;
unsigned int mode_mask;
- if (!ata_dev_enabled(dev))
- continue;
-
mode_mask = ATA_DMA_MASK_ATA;
if (dev->class == ATA_DEV_ATAPI)
mode_mask = ATA_DMA_MASK_ATAPI;
goto out;
/* step 2: always set host PIO timings */
- ata_link_for_each_dev(dev, link) {
- if (!ata_dev_enabled(dev))
- continue;
-
+ ata_for_each_dev(dev, link, ENABLED) {
if (dev->pio_mode == 0xff) {
ata_dev_printk(dev, KERN_WARNING, "no PIO support\n");
rc = -EINVAL;
}
/* step 3: set host DMA timings */
- ata_link_for_each_dev(dev, link) {
- if (!ata_dev_enabled(dev) || !ata_dma_enabled(dev))
+ ata_for_each_dev(dev, link, ENABLED) {
+ if (!ata_dma_enabled(dev))
continue;
dev->xfer_mode = dev->dma_mode;
}
/* step 4: update devices' xfer mode */
- ata_link_for_each_dev(dev, link) {
- /* don't update suspended devices' xfer mode */
- if (!ata_dev_enabled(dev))
- continue;
-
+ ata_for_each_dev(dev, link, ENABLED) {
rc = ata_dev_set_mode(dev);
if (rc)
goto out;
/* 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;
{ "Maxtor 7V300F0", "VA111630", ATA_HORKAGE_NONCQ },
{ "ST380817AS", "3.42", ATA_HORKAGE_NONCQ },
{ "ST3160023AS", "3.42", ATA_HORKAGE_NONCQ },
+ { "OCZ CORE_SSD", "02.10104", ATA_HORKAGE_NONCQ },
/* Seagate NCQ + FLUSH CACHE firmware bug */
- { "ST31500341AS", "9JU138", ATA_HORKAGE_NONCQ |
+ { "ST31500341AS", "SD15", ATA_HORKAGE_NONCQ |
ATA_HORKAGE_FIRMWARE_WARN },
- { "ST31000333AS", "9FZ136", ATA_HORKAGE_NONCQ |
+ { "ST31500341AS", "SD16", ATA_HORKAGE_NONCQ |
ATA_HORKAGE_FIRMWARE_WARN },
- { "ST3640623AS", "9FZ164", ATA_HORKAGE_NONCQ |
+ { "ST31500341AS", "SD17", ATA_HORKAGE_NONCQ |
ATA_HORKAGE_FIRMWARE_WARN },
- { "ST3640323AS", "9FZ134", ATA_HORKAGE_NONCQ |
+ { "ST31500341AS", "SD18", ATA_HORKAGE_NONCQ |
ATA_HORKAGE_FIRMWARE_WARN },
- { "ST3320813AS", "9FZ182", ATA_HORKAGE_NONCQ |
+ { "ST31500341AS", "SD19", ATA_HORKAGE_NONCQ |
ATA_HORKAGE_FIRMWARE_WARN },
- { "ST3320613AS", "9FZ162", ATA_HORKAGE_NONCQ |
+
+ { "ST31000333AS", "SD15", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST31000333AS", "SD16", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST31000333AS", "SD17", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST31000333AS", "SD18", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST31000333AS", "SD19", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+
+ { "ST3640623AS", "SD15", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640623AS", "SD16", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640623AS", "SD17", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640623AS", "SD18", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640623AS", "SD19", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+
+ { "ST3640323AS", "SD15", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640323AS", "SD16", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640323AS", "SD17", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640323AS", "SD18", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3640323AS", "SD19", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+
+ { "ST3320813AS", "SD15", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320813AS", "SD16", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320813AS", "SD17", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320813AS", "SD18", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320813AS", "SD19", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+
+ { "ST3320613AS", "SD15", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320613AS", "SD16", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320613AS", "SD17", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320613AS", "SD18", ATA_HORKAGE_NONCQ |
+ ATA_HORKAGE_FIRMWARE_WARN },
+ { "ST3320613AS", "SD19", ATA_HORKAGE_NONCQ |
ATA_HORKAGE_FIRMWARE_WARN },
/* Blacklist entries taken from Silicon Image 3124/3132
/* Devices that do not need bridging limits applied */
{ "MTRON MSP-SATA*", NULL, ATA_HORKAGE_BRIDGE_OK, },
+ /* Devices which aren't very happy with higher link speeds */
+ { "WD My Book", NULL, ATA_HORKAGE_1_5_GBPS, },
+
/* End Marker */
{ }
};
* - if you have a non detect capable drive you don't want it
* to colour the choice
*/
- ata_port_for_each_link(link, ap) {
- ata_link_for_each_dev(dev, link) {
- if (ata_dev_enabled(dev) && !ata_is_40wire(dev))
+ ata_for_each_link(link, ap, EDGE) {
+ ata_for_each_dev(dev, link, ENABLED) {
+ if (!ata_is_40wire(dev))
return 0;
}
}
struct scatterlist *sg = qc->sg;
int dir = qc->dma_dir;
- WARN_ON(sg == NULL);
+ WARN_ON_ONCE(sg == NULL);
VPRINTK("unmapping %u sg elements\n", qc->n_elem);
if (qc->n_elem)
- dma_unmap_sg(ap->dev, sg, qc->n_elem, dir);
+ dma_unmap_sg(ap->dev, sg, qc->orig_n_elem, dir);
qc->flags &= ~ATA_QCFLAG_DMAMAP;
qc->sg = NULL;
return -1;
DPRINTK("%d sg elements mapped\n", n_elem);
-
+ qc->orig_n_elem = qc->n_elem;
qc->n_elem = n_elem;
qc->flags |= ATA_QCFLAG_DMAMAP;
/**
* ata_qc_new - Request an available ATA command, for queueing
- * @ap: Port associated with device @dev
- * @dev: Device from whom we request an available command structure
+ * @ap: target port
*
* LOCKING:
* None.
/**
* ata_qc_new_init - Request an available ATA command, and initialize it
* @dev: Device from whom we request an available command structure
- * @tag: command tag
*
* LOCKING:
* None.
struct ata_port *ap = qc->ap;
unsigned int tag;
- WARN_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
+ WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
qc->flags = 0;
tag = qc->tag;
struct ata_port *ap = qc->ap;
struct ata_link *link = qc->dev->link;
- WARN_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
- WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE));
+ WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
+ WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE));
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(ap->pflags & ATA_PFLAG_FROZEN);
+ WARN_ON_ONCE(ap->pflags & ATA_PFLAG_FROZEN);
if (unlikely(qc->err_mask))
qc->flags |= ATA_QCFLAG_FAILED;
* check is skipped for old EH because it reuses active qc to
* request ATAPI sense.
*/
- WARN_ON(ap->ops->error_handler && ata_tag_valid(link->active_tag));
+ WARN_ON_ONCE(ap->ops->error_handler && ata_tag_valid(link->active_tag));
if (ata_is_ncq(prot)) {
- WARN_ON(link->sactive & (1 << qc->tag));
+ WARN_ON_ONCE(link->sactive & (1 << qc->tag));
if (!link->sactive)
ap->nr_active_links++;
link->sactive |= 1 << qc->tag;
} else {
- WARN_ON(link->sactive);
+ WARN_ON_ONCE(link->sactive);
ap->nr_active_links++;
link->active_tag = qc->tag;
u32 sstatus;
if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 &&
- (sstatus & 0xf) == 0x3)
+ ata_sstatus_online(sstatus))
return true;
return false;
}
u32 sstatus;
if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 &&
- (sstatus & 0xf) != 0x3)
+ !ata_sstatus_online(sstatus))
return true;
return false;
}
}
ap->pflags |= ATA_PFLAG_PM_PENDING;
- __ata_port_for_each_link(link, ap) {
+ ata_for_each_link(link, ap, HOST_FIRST) {
link->eh_info.action |= action;
link->eh_info.flags |= ehi_flags;
}
dev->horkage = 0;
spin_unlock_irqrestore(ap->lock, flags);
- memset((void *)dev + ATA_DEVICE_CLEAR_OFFSET, 0,
- sizeof(*dev) - ATA_DEVICE_CLEAR_OFFSET);
+ memset((void *)dev + ATA_DEVICE_CLEAR_BEGIN, 0,
+ ATA_DEVICE_CLEAR_END - ATA_DEVICE_CLEAR_BEGIN);
dev->pio_mask = UINT_MAX;
dev->mwdma_mask = UINT_MAX;
dev->udma_mask = UINT_MAX;
host->ops = ops;
}
+
+static void async_port_probe(void *data, async_cookie_t cookie)
+{
+ int rc;
+ struct ata_port *ap = data;
+
+ /*
+ * If we're not allowed to scan this host in parallel,
+ * we need to wait until all previous scans have completed
+ * before going further.
+ * Jeff Garzik says this is only within a controller, so we
+ * don't need to wait for port 0, only for later ports.
+ */
+ if (!(ap->host->flags & ATA_HOST_PARALLEL_SCAN) && ap->port_no != 0)
+ async_synchronize_cookie(cookie);
+
+ /* probe */
+ if (ap->ops->error_handler) {
+ struct ata_eh_info *ehi = &ap->link.eh_info;
+ unsigned long flags;
+
+ ata_port_probe(ap);
+
+ /* kick EH for boot probing */
+ spin_lock_irqsave(ap->lock, flags);
+
+ ehi->probe_mask |= ATA_ALL_DEVICES;
+ ehi->action |= ATA_EH_RESET | ATA_EH_LPM;
+ ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;
+
+ ap->pflags &= ~ATA_PFLAG_INITIALIZING;
+ ap->pflags |= ATA_PFLAG_LOADING;
+ ata_port_schedule_eh(ap);
+
+ spin_unlock_irqrestore(ap->lock, flags);
+
+ /* wait for EH to finish */
+ ata_port_wait_eh(ap);
+ } else {
+ DPRINTK("ata%u: bus probe begin\n", ap->print_id);
+ rc = ata_bus_probe(ap);
+ DPRINTK("ata%u: bus probe end\n", ap->print_id);
+
+ if (rc) {
+ /* FIXME: do something useful here?
+ * Current libata behavior will
+ * tear down everything when
+ * the module is removed
+ * or the h/w is unplugged.
+ */
+ }
+ }
+
+ /* in order to keep device order, we need to synchronize at this point */
+ async_synchronize_cookie(cookie);
+
+ ata_scsi_scan_host(ap, 1);
+
+}
/**
* ata_host_register - register initialized ATA host
* @host: ATA host to register
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];
-
- /* probe */
- if (ap->ops->error_handler) {
- struct ata_eh_info *ehi = &ap->link.eh_info;
- unsigned long flags;
-
- ata_port_probe(ap);
-
- /* kick EH for boot probing */
- spin_lock_irqsave(ap->lock, flags);
-
- ehi->probe_mask |= ATA_ALL_DEVICES;
- ehi->action |= ATA_EH_RESET | ATA_EH_LPM;
- ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;
-
- ap->pflags &= ~ATA_PFLAG_INITIALIZING;
- ap->pflags |= ATA_PFLAG_LOADING;
- ata_port_schedule_eh(ap);
-
- spin_unlock_irqrestore(ap->lock, flags);
-
- /* wait for EH to finish */
- ata_port_wait_eh(ap);
- } else {
- DPRINTK("ata%u: bus probe begin\n", ap->print_id);
- rc = ata_bus_probe(ap);
- DPRINTK("ata%u: bus probe end\n", ap->print_id);
-
- if (rc) {
- /* FIXME: do something useful here?
- * Current libata behavior will
- * tear down everything when
- * the module is removed
- * or the h/w is unplugged.
- */
- }
- }
- }
-
- /* probes are done, now scan each port's disk(s) */
- DPRINTK("host probe begin\n");
- for (i = 0; i < host->n_ports; i++) {
- struct ata_port *ap = host->ports[i];
-
- ata_scsi_scan_host(ap, 1);
+ async_schedule(async_port_probe, ap);
}
return 0;
static void ata_port_detach(struct ata_port *ap)
{
unsigned long flags;
- struct ata_link *link;
- struct ata_device *dev;
if (!ap->ops->error_handler)
goto skip_eh;
/* tell EH we're leaving & flush EH */
spin_lock_irqsave(ap->lock, flags);
ap->pflags |= ATA_PFLAG_UNLOADING;
+ ata_port_schedule_eh(ap);
spin_unlock_irqrestore(ap->lock, flags);
+ /* wait till EH commits suicide */
ata_port_wait_eh(ap);
- /* EH is now guaranteed to see UNLOADING - EH context belongs
- * to us. Restore SControl and disable all existing devices.
- */
- __ata_port_for_each_link(link, ap) {
- sata_scr_write(link, SCR_CONTROL, link->saved_scontrol & 0xff0);
- ata_link_for_each_dev(dev, link)
- ata_dev_disable(dev);
- }
-
- /* Final freeze & EH. All in-flight commands are aborted. EH
- * will be skipped and retrials will be terminated with bad
- * target.
- */
- spin_lock_irqsave(ap->lock, flags);
- ata_port_freeze(ap); /* won't be thawed */
- spin_unlock_irqrestore(ap->lock, flags);
+ /* it better be dead now */
+ WARN_ON(!(ap->pflags & ATA_PFLAG_UNLOADED));
- ata_port_wait_eh(ap);
cancel_rearming_delayed_work(&ap->hotplug_task);
skip_eh:
EXPORT_SYMBOL_GPL(sata_port_ops);
EXPORT_SYMBOL_GPL(ata_dummy_port_ops);
EXPORT_SYMBOL_GPL(ata_dummy_port_info);
-EXPORT_SYMBOL_GPL(__ata_port_next_link);
+EXPORT_SYMBOL_GPL(ata_link_next);
+EXPORT_SYMBOL_GPL(ata_dev_next);
EXPORT_SYMBOL_GPL(ata_std_bios_param);
EXPORT_SYMBOL_GPL(ata_host_init);
EXPORT_SYMBOL_GPL(ata_host_alloc);
EXPORT_SYMBOL_GPL(ata_port_disable);
EXPORT_SYMBOL_GPL(ata_ratelimit);
EXPORT_SYMBOL_GPL(ata_wait_register);
-EXPORT_SYMBOL_GPL(ata_scsi_ioctl);
EXPORT_SYMBOL_GPL(ata_scsi_queuecmd);
EXPORT_SYMBOL_GPL(ata_scsi_slave_config);
EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy);
EXPORT_SYMBOL_GPL(ata_do_dev_read_id);
EXPORT_SYMBOL_GPL(ata_scsi_simulate);
+EXPORT_SYMBOL_GPL(ata_pio_queue_task);
EXPORT_SYMBOL_GPL(ata_pio_need_iordy);
EXPORT_SYMBOL_GPL(ata_timing_find_mode);
EXPORT_SYMBOL_GPL(ata_timing_compute);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff