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Merge branch 'upstream-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev 

* 'upstream-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  ata_piix: IDE Mode SATA patch for Intel Ibex Peak DeviceIDs
  libata-eh: clear UNIT ATTENTION after reset
  ata_piix: add Hercules EC-900 mini-notebook to ich_laptop short cable list
  libata: reorder ata_device to remove 8 bytes of padding on 64 bits
  [libata] pata_bf54x: Add proper PM operation
  pata_sil680: convert CONFIG_PPC_MERGE to CONFIG_PPC
  libata: Implement disk shock protection support
  [libata] Introduce ata_id_has_unload()
  PATA: RPC now selects HAVE_PATA_PLATFORM for pata platform driver
  ata_piix: drop merged SCR access and use slave_link instead
  libata: implement slave_link
  libata: misc updates to prepare for slave link
  libata: reimplement link iterator
  libata: make SCR access ops per-link
This commit is contained in:
Linus Torvalds 2008-10-10 07:46:45 -07:00
parent 3fa8749e58 0395e61bab
commit 82219fceeb
25 changed files with 923 additions and 362 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/ata/Kconfig
View File

@ -663,7 +663,7 @@ config HAVE_PATA_PLATFORM
config PATA_PLATFORM
tristate "Generic platform device PATA support"
depends on EMBEDDED || ARCH_RPC || PPC || HAVE_PATA_PLATFORM
depends on EMBEDDED || PPC || HAVE_PATA_PLATFORM
help
This option enables support for generic directly connected ATA
devices commonly found on embedded systems.

25
drivers/ata/ahci.c
View File

@ -267,8 +267,8 @@ struct ahci_port_priv {
* per PM slot */
};
static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
static int ahci_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
static int ahci_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc);
static bool ahci_qc_fill_rtf(struct ata_queued_cmd *qc);
@ -316,6 +316,7 @@ static struct device_attribute *ahci_shost_attrs[] = {
static struct device_attribute *ahci_sdev_attrs[] = {
&dev_attr_sw_activity,
&dev_attr_unload_heads,
NULL
};
@ -820,10 +821,10 @@ static unsigned ahci_scr_offset(struct ata_port *ap, unsigned int sc_reg)
return 0;
}
static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
static int ahci_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
{
void __iomem *port_mmio = ahci_port_base(ap);
int offset = ahci_scr_offset(ap, sc_reg);
void __iomem *port_mmio = ahci_port_base(link->ap);
int offset = ahci_scr_offset(link->ap, sc_reg);
if (offset) {
*val = readl(port_mmio + offset);
@ -832,10 +833,10 @@ static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
return -EINVAL;
}
static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
static int ahci_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
{
void __iomem *port_mmio = ahci_port_base(ap);
int offset = ahci_scr_offset(ap, sc_reg);
void __iomem *port_mmio = ahci_port_base(link->ap);
int offset = ahci_scr_offset(link->ap, sc_reg);
if (offset) {
writel(val, port_mmio + offset);
@ -973,7 +974,7 @@ static void ahci_disable_alpm(struct ata_port *ap)
writel(PORT_IRQ_PHYRDY, port_mmio + PORT_IRQ_STAT);
/* go ahead and clean out PhyRdy Change from Serror too */
ahci_scr_write(ap, SCR_ERROR, ((1 << 16) | (1 << 18)));
ahci_scr_write(&ap->link, SCR_ERROR, ((1 << 16) | (1 << 18)));
/*
* Clear flag to indicate that we should ignore all PhyRdy
@ -1937,8 +1938,8 @@ static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
ata_ehi_push_desc(host_ehi, "irq_stat 0x%08x", irq_stat);
/* AHCI needs SError cleared; otherwise, it might lock up */
ahci_scr_read(ap, SCR_ERROR, &serror);
ahci_scr_write(ap, SCR_ERROR, serror);
ahci_scr_read(&ap->link, SCR_ERROR, &serror);
ahci_scr_write(&ap->link, SCR_ERROR, serror);
host_ehi->serror |= serror;
/* some controllers set IRQ_IF_ERR on device errors, ignore it */
@ -2027,7 +2028,7 @@ static void ahci_port_intr(struct ata_port *ap)
if ((hpriv->flags & AHCI_HFLAG_NO_HOTPLUG) &&
(status & PORT_IRQ_PHYRDY)) {
status &= ~PORT_IRQ_PHYRDY;
ahci_scr_write(ap, SCR_ERROR, ((1 << 16) | (1 << 18)));
ahci_scr_write(&ap->link, SCR_ERROR, ((1 << 16) | (1 << 18)));
}
if (unlikely(status & PORT_IRQ_ERROR)) {

184
drivers/ata/ata_piix.c
View File

@ -165,8 +165,10 @@ static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev);
static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev);
static int ich_pata_cable_detect(struct ata_port *ap);
static u8 piix_vmw_bmdma_status(struct ata_port *ap);
static int piix_sidpr_scr_read(struct ata_port *ap, unsigned int reg, u32 *val);
static int piix_sidpr_scr_write(struct ata_port *ap, unsigned int reg, u32 val);
static int piix_sidpr_scr_read(struct ata_link *link,
unsigned int reg, u32 *val);
static int piix_sidpr_scr_write(struct ata_link *link,
unsigned int reg, u32 val);
#ifdef CONFIG_PM
static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
static int piix_pci_device_resume(struct pci_dev *pdev);
@ -278,12 +280,15 @@ static const struct pci_device_id piix_pci_tbl[] = {
/* SATA Controller IDE (PCH) */
{ 0x8086, 0x3b20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
/* SATA Controller IDE (PCH) */
{ 0x8086, 0x3b21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (PCH) */
{ 0x8086, 0x3b26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (PCH) */
{ 0x8086, 0x3b28, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
/* SATA Controller IDE (PCH) */
{ 0x8086, 0x3b2d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
/* SATA Controller IDE (PCH) */
{ 0x8086, 0x3b2e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
{ } /* terminate list */
};
@ -582,6 +587,7 @@ static const struct ich_laptop ich_laptop[] = {
{ 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */
{ 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */
{ 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */
{ 0x27DF, 0x1071, 0xD221 }, /* ICH7 on Hercules EC-900 */
{ 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */
{ 0x24CA, 0x1025, 0x003d }, /* ICH4 on ACER TM290 */
{ 0x266F, 0x1025, 0x0066 }, /* ICH6 on ACER Aspire 1694WLMi */
@ -885,23 +891,9 @@ static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev)
* Serial ATA Index/Data Pair Superset Registers access
*
* Beginning from ICH8, there's a sane way to access SCRs using index
* and data register pair located at BAR5. This creates an
* interesting problem of mapping two SCRs to one port.
*
* Although they have separate SCRs, the master and slave aren't
* independent enough to be treated as separate links - e.g. softreset
* resets both. Also, there's no protocol defined for hard resetting
* singled device sharing the virtual port (no defined way to acquire
* device signature). This is worked around by merging the SCR values
* into one sensible value and requesting follow-up SRST after
* hardreset.
*
* SCR merging is perfomed in nibbles which is the unit contents in
* SCRs are organized. If two values are equal, the value is used.
* When they differ, merge table which lists precedence of possible
* values is consulted and the first match or the last entry when
* nothing matches is used. When there's no merge table for the
* specific nibble, value from the first port is used.
* and data register pair located at BAR5 which means that we have
* separate SCRs for master and slave. This is handled using libata
* slave_link facility.
*/
static const int piix_sidx_map[] = {
[SCR_STATUS] = 0,
@ -909,120 +901,38 @@ static const int piix_sidx_map[] = {
[SCR_CONTROL] = 1,
};
static void piix_sidpr_sel(struct ata_device *dev, unsigned int reg)
static void piix_sidpr_sel(struct ata_link *link, unsigned int reg)
{
struct ata_port *ap = dev->link->ap;
struct ata_port *ap = link->ap;
struct piix_host_priv *hpriv = ap->host->private_data;
iowrite32(((ap->port_no * 2 + dev->devno) << 8) | piix_sidx_map[reg],
iowrite32(((ap->port_no * 2 + link->pmp) << 8) | piix_sidx_map[reg],
hpriv->sidpr + PIIX_SIDPR_IDX);
}
static int piix_sidpr_read(struct ata_device *dev, unsigned int reg)
static int piix_sidpr_scr_read(struct ata_link *link,
unsigned int reg, u32 *val)
{
struct piix_host_priv *hpriv = dev->link->ap->host->private_data;
piix_sidpr_sel(dev, reg);
return ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);
}
static void piix_sidpr_write(struct ata_device *dev, unsigned int reg, u32 val)
{
struct piix_host_priv *hpriv = dev->link->ap->host->private_data;
piix_sidpr_sel(dev, reg);
iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);
}
static u32 piix_merge_scr(u32 val0, u32 val1, const int * const *merge_tbl)
{
u32 val = 0;
int i, mi;
for (i = 0, mi = 0; i < 32 / 4; i++) {
u8 c0 = (val0 >> (i * 4)) & 0xf;
u8 c1 = (val1 >> (i * 4)) & 0xf;
u8 merged = c0;
const int *cur;
/* if no merge preference, assume the first value */
cur = merge_tbl[mi];
if (!cur)
goto done;
mi++;
/* if two values equal, use it */
if (c0 == c1)
goto done;
/* choose the first match or the last from the merge table */
while (*cur != -1) {
if (c0 == *cur || c1 == *cur)
break;
cur++;
}
if (*cur == -1)
cur--;
merged = *cur;
done:
val |= merged << (i * 4);
}
return val;
}
static int piix_sidpr_scr_read(struct ata_port *ap, unsigned int reg, u32 *val)
{
const int * const sstatus_merge_tbl[] = {
/* DET */ (const int []){ 1, 3, 0, 4, 3, -1 },
/* SPD */ (const int []){ 2, 1, 0, -1 },
/* IPM */ (const int []){ 6, 2, 1, 0, -1 },
NULL,
};
const int * const scontrol_merge_tbl[] = {
/* DET */ (const int []){ 1, 0, 4, 0, -1 },
/* SPD */ (const int []){ 0, 2, 1, 0, -1 },
/* IPM */ (const int []){ 0, 1, 2, 3, 0, -1 },
NULL,
};
u32 v0, v1;
struct piix_host_priv *hpriv = link->ap->host->private_data;
if (reg >= ARRAY_SIZE(piix_sidx_map))
return -EINVAL;
if (!(ap->flags & ATA_FLAG_SLAVE_POSS)) {
*val = piix_sidpr_read(&ap->link.device[0], reg);
return 0;
}
v0 = piix_sidpr_read(&ap->link.device[0], reg);
v1 = piix_sidpr_read(&ap->link.device[1], reg);
switch (reg) {
case SCR_STATUS:
*val = piix_merge_scr(v0, v1, sstatus_merge_tbl);
break;
case SCR_ERROR:
*val = v0 | v1;
break;
case SCR_CONTROL:
*val = piix_merge_scr(v0, v1, scontrol_merge_tbl);
break;
}
piix_sidpr_sel(link, reg);
*val = ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);
return 0;
}
static int piix_sidpr_scr_write(struct ata_port *ap, unsigned int reg, u32 val)
static int piix_sidpr_scr_write(struct ata_link *link,
unsigned int reg, u32 val)
{
struct piix_host_priv *hpriv = link->ap->host->private_data;
if (reg >= ARRAY_SIZE(piix_sidx_map))
return -EINVAL;
piix_sidpr_write(&ap->link.device[0], reg, val);
if (ap->flags & ATA_FLAG_SLAVE_POSS)
piix_sidpr_write(&ap->link.device[1], reg, val);
piix_sidpr_sel(link, reg);
iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);
return 0;
}
@ -1363,28 +1273,28 @@ static const int *__devinit piix_init_sata_map(struct pci_dev *pdev,
return map;
}
static void __devinit piix_init_sidpr(struct ata_host *host)
static int __devinit piix_init_sidpr(struct ata_host *host)
{
struct pci_dev *pdev = to_pci_dev(host->dev);
struct piix_host_priv *hpriv = host->private_data;
struct ata_device *dev0 = &host->ports[0]->link.device[0];
struct ata_link *link0 = &host->ports[0]->link;
u32 scontrol;
int i;
int i, rc;
/* check for availability */
for (i = 0; i < 4; i++)
if (hpriv->map[i] == IDE)
return;
return 0;
if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR))
return;
return 0;
if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 ||
pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN)
return;
return 0;
if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME))
return;
return 0;
hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR];
@ -1392,7 +1302,7 @@ static void __devinit piix_init_sidpr(struct ata_host *host)
* Give it a test drive by inhibiting power save modes which
* we'll do anyway.
*/
scontrol = piix_sidpr_read(dev0, SCR_CONTROL);
piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
/* if IPM is already 3, SCR access is probably working. Don't
* un-inhibit power save modes as BIOS might have inhibited
@ -1400,18 +1310,30 @@ static void __devinit piix_init_sidpr(struct ata_host *host)
*/
if ((scontrol & 0xf00) != 0x300) {
scontrol |= 0x300;
piix_sidpr_write(dev0, SCR_CONTROL, scontrol);
scontrol = piix_sidpr_read(dev0, SCR_CONTROL);
piix_sidpr_scr_write(link0, SCR_CONTROL, scontrol);
piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
if ((scontrol & 0xf00) != 0x300) {
dev_printk(KERN_INFO, host->dev, "SCR access via "
"SIDPR is available but doesn't work\n");
return;
return 0;
}
}
host->ports[0]->ops = &piix_sidpr_sata_ops;
host->ports[1]->ops = &piix_sidpr_sata_ops;
/* okay, SCRs available, set ops and ask libata for slave_link */
for (i = 0; i < 2; i++) {
struct ata_port *ap = host->ports[i];
ap->ops = &piix_sidpr_sata_ops;
if (ap->flags & ATA_FLAG_SLAVE_POSS) {
rc = ata_slave_link_init(ap);
if (rc)
return rc;
}
}
return 0;
}
static void piix_iocfg_bit18_quirk(struct pci_dev *pdev)
@ -1521,7 +1443,9 @@ static int __devinit piix_init_one(struct pci_dev *pdev,
/* initialize controller */
if (port_flags & ATA_FLAG_SATA) {
piix_init_pcs(host, piix_map_db_table[ent->driver_data]);
piix_init_sidpr(host);
rc = piix_init_sidpr(host);
if (rc)
return rc;
}
/* apply IOCFG bit18 quirk */

252
drivers/ata/libata-core.c
View File

@ -163,6 +163,67 @@ MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
/*
* Iterator helpers. Don't use directly.
*
* LOCKING:
* Host lock or EH context.
*/
struct ata_link *__ata_port_next_link(struct ata_port *ap,
struct ata_link *link, bool dev_only)
{
/* NULL link indicates start of iteration */
if (!link) {
if (dev_only && sata_pmp_attached(ap))
return ap->pmp_link;
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)
return ap->slave_link;
return NULL;
}
return ap->pmp_link;
}
/* slave_link excludes PMP */
if (unlikely(link == ap->slave_link))
return NULL;
/* iterate to the next PMP link */
if (++link < ap->pmp_link + ap->nr_pmp_links)
return link;
return NULL;
}
/**
* ata_dev_phys_link - find physical link for a device
* @dev: ATA device to look up physical link for
*
* Look up physical link which @dev is attached to. Note that
* this is different from @dev->link only when @dev is on slave
* link. For all other cases, it's the same as @dev->link.
*
* LOCKING:
* Don't care.
*
* RETURNS:
* Pointer to the found physical link.
*/
struct ata_link *ata_dev_phys_link(struct ata_device *dev)
{
struct ata_port *ap = dev->link->ap;
if (!ap->slave_link)
return dev->link;
if (!dev->devno)
return &ap->link;
return ap->slave_link;
}
/**
* ata_force_cbl - force cable type according to libata.force
* @ap: ATA port of interest
@ -206,7 +267,8 @@ void ata_force_cbl(struct ata_port *ap)
* the host link and all fan-out ports connected via PMP. If the
* device part is specified as 0 (e.g. 1.00:), it specifies the
* first fan-out link not the host link. Device number 15 always
* points to the host link whether PMP is attached or not.
* points to the host link whether PMP is attached or not. If the
* controller has slave link, device number 16 points to it.
*
* LOCKING:
* EH context.
@ -214,12 +276,11 @@ void ata_force_cbl(struct ata_port *ap)
static void ata_force_link_limits(struct ata_link *link)
{
bool did_spd = false;
int linkno, i;
int linkno = link->pmp;
int i;
if (ata_is_host_link(link))
linkno = 15;
else
linkno = link->pmp;
linkno += 15;
for (i = ata_force_tbl_size - 1; i >= 0; i--) {
const struct ata_force_ent *fe = &ata_force_tbl[i];
@ -266,9 +327,9 @@ static void ata_force_xfermask(struct ata_device *dev)
int alt_devno = devno;
int i;
/* allow n.15 for the first device attached to host port */
if (ata_is_host_link(dev->link) && devno == 0)
alt_devno = 15;
/* allow n.15/16 for devices attached to host port */
if (ata_is_host_link(dev->link))
alt_devno += 15;
for (i = ata_force_tbl_size - 1; i >= 0; i--) {
const struct ata_force_ent *fe = &ata_force_tbl[i];
@ -320,9 +381,9 @@ static void ata_force_horkage(struct ata_device *dev)
int alt_devno = devno;
int i;
/* allow n.15 for the first device attached to host port */
if (ata_is_host_link(dev->link) && devno == 0)
alt_devno = 15;
/* allow n.15/16 for devices attached to host port */
if (ata_is_host_link(dev->link))
alt_devno += 15;
for (i = 0; i < ata_force_tbl_size; i++) {
const struct ata_force_ent *fe = &ata_force_tbl[i];
@ -2681,7 +2742,7 @@ static void sata_print_link_status(struct ata_link *link)
return;
sata_scr_read(link, SCR_CONTROL, &scontrol);
if (ata_link_online(link)) {
if (ata_phys_link_online(link)) {
tmp = (sstatus >> 4) & 0xf;
ata_link_printk(link, KERN_INFO,
"SATA link up %s (SStatus %X SControl %X)\n",
@ -3372,6 +3433,12 @@ int ata_wait_ready(struct ata_link *link, unsigned long deadline,
unsigned long nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT);
int warned = 0;
/* Slave readiness can't be tested separately from master. On
* M/S emulation configuration, this function should be called
* only on the master and it will handle both master and slave.
*/
WARN_ON(link == link->ap->slave_link);
if (time_after(nodev_deadline, deadline))
nodev_deadline = deadline;
@ -3593,7 +3660,7 @@ int ata_std_prereset(struct ata_link *link, unsigned long deadline)
}
/* no point in trying softreset on offline link */
if (ata_link_offline(link))
if (ata_phys_link_offline(link))
ehc->i.action &= ~ATA_EH_SOFTRESET;
return 0;
@ -3671,7 +3738,7 @@ int sata_link_hardreset(struct ata_link *link, const unsigned long *timing,
if (rc)
goto out;
/* if link is offline nothing more to do */
if (ata_link_offline(link))
if (ata_phys_link_offline(link))
goto out;
/* Link is online. From this point, -ENODEV too is an error. */
@ -4868,10 +4935,8 @@ int sata_scr_valid(struct ata_link *link)
int sata_scr_read(struct ata_link *link, int reg, u32 *val)
{
if (ata_is_host_link(link)) {
struct ata_port *ap = link->ap;
if (sata_scr_valid(link))
return ap->ops->scr_read(ap, reg, val);
return link->ap->ops->scr_read(link, reg, val);
return -EOPNOTSUPP;
}
@ -4897,10 +4962,8 @@ int sata_scr_read(struct ata_link *link, int reg, u32 *val)
int sata_scr_write(struct ata_link *link, int reg, u32 val)
{
if (ata_is_host_link(link)) {
struct ata_port *ap = link->ap;
if (sata_scr_valid(link))
return ap->ops->scr_write(ap, reg, val);
return link->ap->ops->scr_write(link, reg, val);
return -EOPNOTSUPP;
}
@ -4925,13 +4988,12 @@ int sata_scr_write(struct ata_link *link, int reg, u32 val)
int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
{
if (ata_is_host_link(link)) {
struct ata_port *ap = link->ap;
int rc;
if (sata_scr_valid(link)) {
rc = ap->ops->scr_write(ap, reg, val);
rc = link->ap->ops->scr_write(link, reg, val);
if (rc == 0)
rc = ap->ops->scr_read(ap, reg, &val);
rc = link->ap->ops->scr_read(link, reg, &val);
return rc;
}
return -EOPNOTSUPP;
@ -4941,7 +5003,7 @@ int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
}
/**
* ata_link_online - test whether the given link is online
* ata_phys_link_online - test whether the given link is online
* @link: ATA link to test
*
* Test whether @link is online. Note that this function returns
@ -4952,20 +5014,20 @@ int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
* None.
*
* RETURNS:
* 1 if the port online status is available and online.
* True if the port online status is available and online.
*/
int ata_link_online(struct ata_link *link)
bool ata_phys_link_online(struct ata_link *link)
{
u32 sstatus;
if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 &&
(sstatus & 0xf) == 0x3)
return 1;
return 0;
return true;
return false;
}
/**
* ata_link_offline - test whether the given link is offline
* ata_phys_link_offline - test whether the given link is offline
* @link: ATA link to test
*
* Test whether @link is offline. Note that this function
@ -4976,16 +5038,68 @@ int ata_link_online(struct ata_link *link)
* None.
*
* RETURNS:
* 1 if the port offline status is available and offline.
* True if the port offline status is available and offline.
*/
int ata_link_offline(struct ata_link *link)
bool ata_phys_link_offline(struct ata_link *link)
{
u32 sstatus;
if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 &&
(sstatus & 0xf) != 0x3)
return 1;
return 0;
return true;
return false;
}
/**
* ata_link_online - test whether the given link is online
* @link: ATA link to test
*
* Test whether @link is online. This is identical to
* ata_phys_link_online() when there's no slave link. When
* there's a slave link, this function should only be called on
* the master link and will return true if any of M/S links is
* online.
*
* LOCKING:
* None.
*
* RETURNS:
* True if the port online status is available and online.
*/
bool ata_link_online(struct ata_link *link)
{
struct ata_link *slave = link->ap->slave_link;
WARN_ON(link == slave); /* shouldn't be called on slave link */
return ata_phys_link_online(link) ||
(slave && ata_phys_link_online(slave));
}
/**
* ata_link_offline - test whether the given link is offline
* @link: ATA link to test
*
* Test whether @link is offline. This is identical to
* ata_phys_link_offline() when there's no slave link. When
* there's a slave link, this function should only be called on
* the master link and will return true if both M/S links are
* offline.
*
* LOCKING:
* None.
*
* RETURNS:
* True if the port offline status is available and offline.
*/
bool ata_link_offline(struct ata_link *link)
{
struct ata_link *slave = link->ap->slave_link;
WARN_ON(link == slave); /* shouldn't be called on slave link */
return ata_phys_link_offline(link) &&
(!slave || ata_phys_link_offline(slave));
}
#ifdef CONFIG_PM
@ -5127,11 +5241,11 @@ int ata_port_start(struct ata_port *ap)
*/
void ata_dev_init(struct ata_device *dev)
{
struct ata_link *link = dev->link;
struct ata_link *link = ata_dev_phys_link(dev);
struct ata_port *ap = link->ap;
unsigned long flags;
/* SATA spd limit is bound to the first device */
/* SATA spd limit is bound to the attached device, reset together */
link->sata_spd_limit = link->hw_sata_spd_limit;
link->sata_spd = 0;
@ -5264,6 +5378,7 @@ struct ata_port *ata_port_alloc(struct ata_host *host)
INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan);
INIT_LIST_HEAD(&ap->eh_done_q);
init_waitqueue_head(&ap->eh_wait_q);
init_completion(&ap->park_req_pending);
init_timer_deferrable(&ap->fastdrain_timer);
ap->fastdrain_timer.function = ata_eh_fastdrain_timerfn;
ap->fastdrain_timer.data = (unsigned long)ap;
@ -5294,6 +5409,7 @@ static void ata_host_release(struct device *gendev, void *res)
scsi_host_put(ap->scsi_host);
kfree(ap->pmp_link);
kfree(ap->slave_link);
kfree(ap);
host->ports[i] = NULL;
}
@ -5414,6 +5530,68 @@ struct ata_host *ata_host_alloc_pinfo(struct device *dev,
return host;
}
/**
* ata_slave_link_init - initialize slave link
* @ap: port to initialize slave link for
*
* Create and initialize slave link for @ap. This enables slave
* link handling on the port.
*
* In libata, a port contains links and a link contains devices.
* There is single host link but if a PMP is attached to it,
* there can be multiple fan-out links. On SATA, there's usually
* a single device connected to a link but PATA and SATA
* controllers emulating TF based interface can have two - master
* and slave.
*
* However, there are a few controllers which don't fit into this
* abstraction too well - SATA controllers which emulate TF
* interface with both master and slave devices but also have
* separate SCR register sets for each device. These controllers
* need separate links for physical link handling
* (e.g. onlineness, link speed) but should be treated like a
* traditional M/S controller for everything else (e.g. command
* issue, softreset).
*
* slave_link is libata's way of handling this class of
* controllers without impacting core layer too much. For
* anything other than physical link handling, the default host
* link is used for both master and slave. For physical link
* handling, separate @ap->slave_link is used. All dirty details
* are implemented inside libata core layer. From LLD's POV, the
* only difference is that prereset, hardreset and postreset are
* called once more for the slave link, so the reset sequence
* looks like the following.
*
* prereset(M) -> prereset(S) -> hardreset(M) -> hardreset(S) ->
* softreset(M) -> postreset(M) -> postreset(S)
*
* Note that softreset is called only for the master. Softreset
* resets both M/S by definition, so SRST on master should handle
* both (the standard method will work just fine).
*
* LOCKING:
* Should be called before host is registered.
*
* RETURNS:
* 0 on success, -errno on failure.
*/
int ata_slave_link_init(struct ata_port *ap)
{
struct ata_link *link;
WARN_ON(ap->slave_link);
WARN_ON(ap->flags & ATA_FLAG_PMP);
link = kzalloc(sizeof(*link), GFP_KERNEL);
if (!link)
return -ENOMEM;
ata_link_init(ap, link, 1);
ap->slave_link = link;
return 0;
}
static void ata_host_stop(struct device *gendev, void *res)
{
struct ata_host *host = dev_get_drvdata(gendev);
@ -5640,6 +5818,8 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
/* init sata_spd_limit to the current value */
sata_link_init_spd(&ap->link);
if (ap->slave_link)
sata_link_init_spd(ap->slave_link);
/* print per-port info to dmesg */
xfer_mask = ata_pack_xfermask(ap->pio_mask, ap->mwdma_mask,
@ -6260,10 +6440,12 @@ EXPORT_SYMBOL_GPL(ata_base_port_ops);
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_std_bios_param);
EXPORT_SYMBOL_GPL(ata_host_init);
EXPORT_SYMBOL_GPL(ata_host_alloc);
EXPORT_SYMBOL_GPL(ata_host_alloc_pinfo);
EXPORT_SYMBOL_GPL(ata_slave_link_init);
EXPORT_SYMBOL_GPL(ata_host_start);
EXPORT_SYMBOL_GPL(ata_host_register);
EXPORT_SYMBOL_GPL(ata_host_activate);

362
drivers/ata/libata-eh.c
View File

@ -79,6 +79,8 @@ enum {
*/
ATA_EH_PRERESET_TIMEOUT = 10000,
ATA_EH_FASTDRAIN_INTERVAL = 3000,
ATA_EH_UA_TRIES = 5,
};
/* The following table determines how we sequence resets. Each entry
@ -1356,6 +1358,37 @@ static int ata_eh_read_log_10h(struct ata_device *dev,
return 0;
}
/**
* atapi_eh_tur - perform ATAPI TEST_UNIT_READY
* @dev: target ATAPI device
* @r_sense_key: out parameter for sense_key
*
* Perform ATAPI TEST_UNIT_READY.
*
* LOCKING:
* EH context (may sleep).
*
* RETURNS:
* 0 on success, AC_ERR_* mask on failure.
*/
static unsigned int atapi_eh_tur(struct ata_device *dev, u8 *r_sense_key)
{
u8 cdb[ATAPI_CDB_LEN] = { TEST_UNIT_READY, 0, 0, 0, 0, 0 };
struct ata_taskfile tf;
unsigned int err_mask;
ata_tf_init(dev, &tf);
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
tf.command = ATA_CMD_PACKET;
tf.protocol = ATAPI_PROT_NODATA;
err_mask = ata_exec_internal(dev, &tf, cdb, DMA_NONE, NULL, 0, 0);
if (err_mask == AC_ERR_DEV)
*r_sense_key = tf.feature >> 4;
return err_mask;
}
/**
* atapi_eh_request_sense - perform ATAPI REQUEST_SENSE
* @dev: device to perform REQUEST_SENSE to
@ -1756,7 +1789,7 @@ static unsigned int ata_eh_speed_down_verdict(struct ata_device *dev)
static unsigned int ata_eh_speed_down(struct ata_device *dev,
unsigned int eflags, unsigned int err_mask)
{
struct ata_link *link = dev->link;
struct ata_link *link = ata_dev_phys_link(dev);
int xfer_ok = 0;
unsigned int verdict;
unsigned int action = 0;
@ -1880,7 +1913,8 @@ static void ata_eh_link_autopsy(struct ata_link *link)
for (tag = 0; tag < ATA_MAX_QUEUE; tag++) {
struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
if (!(qc->flags & ATA_QCFLAG_FAILED) || qc->dev->link != link)
if (!(qc->flags & ATA_QCFLAG_FAILED) ||
ata_dev_phys_link(qc->dev) != link)
continue;
/* inherit upper level err_mask */
@ -1967,6 +2001,23 @@ void ata_eh_autopsy(struct ata_port *ap)
ata_port_for_each_link(link, ap)
ata_eh_link_autopsy(link);
/* Handle the frigging slave link. Autopsy is done similarly
* but actions and flags are transferred over to the master
* link and handled from there.
*/
if (ap->slave_link) {
struct ata_eh_context *mehc = &ap->link.eh_context;
struct ata_eh_context *sehc = &ap->slave_link->eh_context;
ata_eh_link_autopsy(ap->slave_link);
ata_eh_about_to_do(ap->slave_link, NULL, ATA_EH_ALL_ACTIONS);
mehc->i.action |= sehc->i.action;
mehc->i.dev_action[1] |= sehc->i.dev_action[1];
mehc->i.flags |= sehc->i.flags;
ata_eh_done(ap->slave_link, NULL, ATA_EH_ALL_ACTIONS);
}
/* Autopsy of fanout ports can affect host link autopsy.
* Perform host link autopsy last.
*/
@ -2001,7 +2052,8 @@ static void ata_eh_link_report(struct ata_link *link)
for (tag = 0; tag < ATA_MAX_QUEUE; tag++) {
struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);
if (!(qc->flags & ATA_QCFLAG_FAILED) || qc->dev->link != link ||
if (!(qc->flags & ATA_QCFLAG_FAILED) ||
ata_dev_phys_link(qc->dev) != link ||
((qc->flags & ATA_QCFLAG_QUIET) &&
qc->err_mask == AC_ERR_DEV))
continue;
@ -2068,7 +2120,7 @@ static void ata_eh_link_report(struct ata_link *link)
char cdb_buf[70] = "";
if (!(qc->flags & ATA_QCFLAG_FAILED) ||
qc->dev->link != link || !qc->err_mask)
ata_dev_phys_link(qc->dev) != link || !qc->err_mask)
continue;
if (qc->dma_dir != DMA_NONE) {
@ -2160,12 +2212,14 @@ void ata_eh_report(struct ata_port *ap)
}
static int ata_do_reset(struct ata_link *link, ata_reset_fn_t reset,
unsigned int *classes, unsigned long deadline)
unsigned int *classes, unsigned long deadline,
bool clear_classes)
{
struct ata_device *dev;
ata_link_for_each_dev(dev, link)
classes[dev->devno] = ATA_DEV_UNKNOWN;
if (clear_classes)
ata_link_for_each_dev(dev, link)
classes[dev->devno] = ATA_DEV_UNKNOWN;
return reset(link, classes, deadline);
}
@ -2187,17 +2241,20 @@ int ata_eh_reset(struct ata_link *link, int classify,
ata_reset_fn_t hardreset, ata_postreset_fn_t postreset)
{
struct ata_port *ap = link->ap;
struct ata_link *slave = ap->slave_link;
struct ata_eh_context *ehc = &link->eh_context;
struct ata_eh_context *sehc = &slave->eh_context;
unsigned int *classes = ehc->classes;
unsigned int lflags = link->flags;
int verbose = !(ehc->i.flags & ATA_EHI_QUIET);
int max_tries = 0, try = 0;
struct ata_link *failed_link;
struct ata_device *dev;
unsigned long deadline, now;
ata_reset_fn_t reset;
unsigned long flags;
u32 sstatus;
int nr_known, rc;
int nr_unknown, rc;
/*
* Prepare to reset
@ -2252,8 +2309,30 @@ int ata_eh_reset(struct ata_link *link, int classify,
}
if (prereset) {
rc = prereset(link,
ata_deadline(jiffies, ATA_EH_PRERESET_TIMEOUT));
unsigned long deadline = ata_deadline(jiffies,
ATA_EH_PRERESET_TIMEOUT);
if (slave) {
sehc->i.action &= ~ATA_EH_RESET;
sehc->i.action |= ehc->i.action;
}
rc = prereset(link, deadline);
/* If present, do prereset on slave link too. Reset
* is skipped iff both master and slave links report
* -ENOENT or clear ATA_EH_RESET.
*/
if (slave && (rc == 0 || rc == -ENOENT)) {
int tmp;
tmp = prereset(slave, deadline);
if (tmp != -ENOENT)
rc = tmp;
ehc->i.action |= sehc->i.action;
}
if (rc) {
if (rc == -ENOENT) {
ata_link_printk(link, KERN_DEBUG,
@ -2302,25 +2381,51 @@ int ata_eh_reset(struct ata_link *link, int classify,
else
ehc->i.flags |= ATA_EHI_DID_SOFTRESET;
rc = ata_do_reset(link, reset, classes, deadline);
if (rc && rc != -EAGAIN)
rc = ata_do_reset(link, reset, classes, deadline, true);
if (rc && rc != -EAGAIN) {
failed_link = link;
goto fail;
}
/* hardreset slave link if existent */
if (slave && reset == hardreset) {
int tmp;
if (verbose)
ata_link_printk(slave, KERN_INFO,
"hard resetting link\n");
ata_eh_about_to_do(slave, NULL, ATA_EH_RESET);
tmp = ata_do_reset(slave, reset, classes, deadline,
false);
switch (tmp) {
case -EAGAIN:
rc = -EAGAIN;
case 0:
break;
default:
failed_link = slave;
rc = tmp;
goto fail;
}
}
/* perform follow-up SRST if necessary */
if (reset == hardreset &&
ata_eh_followup_srst_needed(link, rc, classes)) {
/* okay, let's do follow-up softreset */
reset = softreset;
if (!reset) {
ata_link_printk(link, KERN_ERR,
"follow-up softreset required "
"but no softreset avaliable\n");
failed_link = link;
rc = -EINVAL;
goto fail;
}
ata_eh_about_to_do(link, NULL, ATA_EH_RESET);
rc = ata_do_reset(link, reset, classes, deadline);
rc = ata_do_reset(link, reset, classes, deadline, true);
}
} else {
if (verbose)
@ -2341,7 +2446,7 @@ int ata_eh_reset(struct ata_link *link, int classify,
dev->pio_mode = XFER_PIO_0;
dev->flags &= ~ATA_DFLAG_SLEEPING;
if (ata_link_offline(link))
if (ata_phys_link_offline(ata_dev_phys_link(dev)))
continue;
/* apply class override */
@ -2354,6 +2459,8 @@ int ata_eh_reset(struct ata_link *link, int classify,
/* record current link speed */
if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0)
link->sata_spd = (sstatus >> 4) & 0xf;
if (slave && sata_scr_read(slave, SCR_STATUS, &sstatus) == 0)
slave->sata_spd = (sstatus >> 4) & 0xf;
/* thaw the port */
if (ata_is_host_link(link))
@ -2366,12 +2473,17 @@ int ata_eh_reset(struct ata_link *link, int classify,
* reset and here. This race is mediated by cross checking
* link onlineness and classification result later.
*/
if (postreset)
if (postreset) {
postreset(link, classes);
if (slave)
postreset(slave, classes);
}
/* clear cached SError */
spin_lock_irqsave(link->ap->lock, flags);
link->eh_info.serror = 0;
if (slave)
slave->eh_info.serror = 0;
spin_unlock_irqrestore(link->ap->lock, flags);
/* Make sure onlineness and classification result correspond.
@ -2381,19 +2493,21 @@ int ata_eh_reset(struct ata_link *link, int classify,
* link onlineness and classification result, those conditions
* can be reliably detected and retried.
*/
nr_known = 0;
nr_unknown = 0;
ata_link_for_each_dev(dev, link) {
/* convert all ATA_DEV_UNKNOWN to ATA_DEV_NONE */
if (classes[dev->devno] == ATA_DEV_UNKNOWN)
if (classes[dev->devno] == ATA_DEV_UNKNOWN) {
classes[dev->devno] = ATA_DEV_NONE;
else
nr_known++;
if (ata_phys_link_online(ata_dev_phys_link(dev)))
nr_unknown++;
}
}
if (classify && !nr_known && ata_link_online(link)) {
if (classify && nr_unknown) {
if (try < max_tries) {
ata_link_printk(link, KERN_WARNING, "link online but "
"device misclassified, retrying\n");
failed_link = link;
rc = -EAGAIN;
goto fail;
}
@ -2404,6 +2518,8 @@ int ata_eh_reset(struct ata_link *link, int classify,
/* reset successful, schedule revalidation */
ata_eh_done(link, NULL, ATA_EH_RESET);
if (slave)
ata_eh_done(slave, NULL, ATA_EH_RESET);
ehc->last_reset = jiffies;
ehc->i.action |= ATA_EH_REVALIDATE;
@ -2411,6 +2527,8 @@ int ata_eh_reset(struct ata_link *link, int classify,
out:
/* clear hotplug flag */
ehc->i.flags &= ~ATA_EHI_HOTPLUGGED;
if (slave)
sehc->i.flags &= ~ATA_EHI_HOTPLUGGED;
spin_lock_irqsave(ap->lock, flags);
ap->pflags &= ~ATA_PFLAG_RESETTING;
@ -2431,7 +2549,7 @@ int ata_eh_reset(struct ata_link *link, int classify,
if (time_before(now, deadline)) {
unsigned long delta = deadline - now;
ata_link_printk(link, KERN_WARNING,
ata_link_printk(failed_link, KERN_WARNING,
"reset failed (errno=%d), retrying in %u secs\n",
rc, DIV_ROUND_UP(jiffies_to_msecs(delta), 1000));
@ -2439,13 +2557,92 @@ int ata_eh_reset(struct ata_link *link, int classify,
delta = schedule_timeout_uninterruptible(delta);
}
if (rc == -EPIPE || try == max_tries - 1)
if (try == max_tries - 1) {
sata_down_spd_limit(link);
if (slave)
sata_down_spd_limit(slave);
} else if (rc == -EPIPE)
sata_down_spd_limit(failed_link);
if (hardreset)
reset = hardreset;
goto retry;
}
static inline void ata_eh_pull_park_action(struct ata_port *ap)
{
struct ata_link *link;
struct ata_device *dev;
unsigned long flags;
/*
* This function can be thought of as an extended version of
* ata_eh_about_to_do() specially crafted to accommodate the
* requirements of ATA_EH_PARK handling. Since the EH thread
* does not leave the do {} while () loop in ata_eh_recover as
* long as the timeout for a park request to *one* device on
* the port has not expired, and since we still want to pick
* up park requests to other devices on the same port or
* timeout updates for the same device, we have to pull
* ATA_EH_PARK actions from eh_info into eh_context.i
* ourselves at the beginning of each pass over the loop.
*
* Additionally, all write accesses to &ap->park_req_pending
* through INIT_COMPLETION() (see below) or complete_all()
* (see ata_scsi_park_store()) are protected by the host lock.
* As a result we have that park_req_pending.done is zero on
* exit from this function, i.e. when ATA_EH_PARK actions for
* *all* devices on port ap have been pulled into the
* respective eh_context structs. If, and only if,
* park_req_pending.done is non-zero by the time we reach
* wait_for_completion_timeout(), another ATA_EH_PARK action
* has been scheduled for at least one of the devices on port
* ap and we have to cycle over the do {} while () loop in
* ata_eh_recover() again.
*/
spin_lock_irqsave(ap->lock, flags);
INIT_COMPLETION(ap->park_req_pending);
ata_port_for_each_link(link, ap) {
ata_link_for_each_dev(dev, link) {
struct ata_eh_info *ehi = &link->eh_info;
link->eh_context.i.dev_action[dev->devno] |=
ehi->dev_action[dev->devno] & ATA_EH_PARK;
ata_eh_clear_action(link, dev, ehi, ATA_EH_PARK);
}
}
spin_unlock_irqrestore(ap->lock, flags);
}
static void ata_eh_park_issue_cmd(struct ata_device *dev, int park)
{
struct ata_eh_context *ehc = &dev->link->eh_context;
struct ata_taskfile tf;
unsigned int err_mask;
ata_tf_init(dev, &tf);
if (park) {
ehc->unloaded_mask |= 1 << dev->devno;
tf.command = ATA_CMD_IDLEIMMEDIATE;
tf.feature = 0x44;
tf.lbal = 0x4c;
tf.lbam = 0x4e;
tf.lbah = 0x55;
} else {
ehc->unloaded_mask &= ~(1 << dev->devno);
tf.command = ATA_CMD_CHK_POWER;
}
tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
tf.protocol |= ATA_PROT_NODATA;
err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
if (park && (err_mask || tf.lbal != 0xc4)) {
ata_dev_printk(dev, KERN_ERR, "head unload failed!\n");
ehc->unloaded_mask &= ~(1 << dev->devno);
}
}
static int ata_eh_revalidate_and_attach(struct ata_link *link,
struct ata_device **r_failed_dev)
{
@ -2472,7 +2669,7 @@ static int ata_eh_revalidate_and_attach(struct ata_link *link,
if ((action & ATA_EH_REVALIDATE) && ata_dev_enabled(dev)) {
WARN_ON(dev->class == ATA_DEV_PMP);
if (ata_link_offline(link)) {
if (ata_phys_link_offline(ata_dev_phys_link(dev))) {
rc = -EIO;
goto err;
}
@ -2610,6 +2807,53 @@ int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev)
return rc;
}
/**
* atapi_eh_clear_ua - Clear ATAPI UNIT ATTENTION after reset
* @dev: ATAPI device to clear UA for
*
* Resets and other operations can make an ATAPI device raise
* UNIT ATTENTION which causes the next operation to fail. This
* function clears UA.
*
* LOCKING:
* EH context (may sleep).
*
* RETURNS:
* 0 on success, -errno on failure.
*/
static int atapi_eh_clear_ua(struct ata_device *dev)
{
int i;
for (i = 0; i < ATA_EH_UA_TRIES; i++) {
u8 sense_buffer[SCSI_SENSE_BUFFERSIZE];
u8 sense_key = 0;
unsigned int err_mask;
err_mask = atapi_eh_tur(dev, &sense_key);
if (err_mask != 0 && err_mask != AC_ERR_DEV) {
ata_dev_printk(dev, KERN_WARNING, "TEST_UNIT_READY "
"failed (err_mask=0x%x)\n", err_mask);
return -EIO;
}
if (!err_mask || sense_key != UNIT_ATTENTION)
return 0;
err_mask = atapi_eh_request_sense(dev, sense_buffer, sense_key);
if (err_mask) {
ata_dev_printk(dev, KERN_WARNING, "failed to clear "
"UNIT ATTENTION (err_mask=0x%x)\n", err_mask);
return -EIO;
}
}
ata_dev_printk(dev, KERN_WARNING,
"UNIT ATTENTION persists after %d tries\n", ATA_EH_UA_TRIES);
return 0;
}
static int ata_link_nr_enabled(struct ata_link *link)
{
struct ata_device *dev;
@ -2697,7 +2941,7 @@ static int ata_eh_handle_dev_fail(struct ata_device *dev, int err)
/* This is the last chance, better to slow
* down than lose it.
*/
sata_down_spd_limit(dev->link);
sata_down_spd_limit(ata_dev_phys_link(dev));
ata_down_xfermask_limit(dev, ATA_DNXFER_PIO);
}
}
@ -2707,7 +2951,7 @@ static int ata_eh_handle_dev_fail(struct ata_device *dev, int err)
ata_dev_disable(dev);
/* detach if offline */
if (ata_link_offline(dev->link))
if (ata_phys_link_offline(ata_dev_phys_link(dev)))
ata_eh_detach_dev(dev);
/* schedule probe if necessary */
@ -2755,7 +2999,7 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
struct ata_device *dev;
int nr_failed_devs;
int rc;
unsigned long flags;
unsigned long flags, deadline;
DPRINTK("ENTER\n");
@ -2829,6 +3073,56 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
}
}
do {
unsigned long now;
/*
* clears ATA_EH_PARK in eh_info and resets
* ap->park_req_pending
*/
ata_eh_pull_park_action(ap);
deadline = jiffies;
ata_port_for_each_link(link, ap) {
ata_link_for_each_dev(dev, link) {
struct ata_eh_context *ehc = &link->eh_context;
unsigned long tmp;
if (dev->class != ATA_DEV_ATA)
continue;
if (!(ehc->i.dev_action[dev->devno] &
ATA_EH_PARK))
continue;
tmp = dev->unpark_deadline;
if (time_before(deadline, tmp))
deadline = tmp;
else if (time_before_eq(tmp, jiffies))
continue;
if (ehc->unloaded_mask & (1 << dev->devno))
continue;
ata_eh_park_issue_cmd(dev, 1);
}
}
now = jiffies;
if (time_before_eq(deadline, now))
break;
deadline = wait_for_completion_timeout(&ap->park_req_pending,
deadline - now);
} while (deadline);
ata_port_for_each_link(link, ap) {
ata_link_for_each_dev(dev, link) {
if (!(link->eh_context.unloaded_mask &
(1 << dev->devno)))
continue;
ata_eh_park_issue_cmd(dev, 0);
ata_eh_done(link, dev, ATA_EH_PARK);
}
}
/* the rest */
ata_port_for_each_link(link, ap) {
struct ata_eh_context *ehc = &link->eh_context;
@ -2852,6 +3146,20 @@ int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
ehc->i.flags &= ~ATA_EHI_SETMODE;
}
/* If reset has been issued, clear UA to avoid
* disrupting the current users of the device.
*/
if (ehc->i.flags & ATA_EHI_DID_RESET) {
ata_link_for_each_dev(dev, link) {
if (dev->class != ATA_DEV_ATAPI)
continue;
rc = atapi_eh_clear_ua(dev);
if (rc)
goto dev_fail;
}
}
/* configure link power saving */
if (ehc->i.action & ATA_EH_LPM)
ata_link_for_each_dev(dev, link)
ata_dev_enable_pm(dev, ap->pm_policy);

108
drivers/ata/libata-scsi.c
View File

@ -183,6 +183,105 @@ DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR,
ata_scsi_lpm_show, ata_scsi_lpm_put);
EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy);
static ssize_t ata_scsi_park_show(struct device *device,
struct device_attribute *attr, char *buf)
{
struct scsi_device *sdev = to_scsi_device(device);
struct ata_port *ap;
struct ata_link *link;
struct ata_device *dev;
unsigned long flags;
unsigned int uninitialized_var(msecs);
int rc = 0;
ap = ata_shost_to_port(sdev->host);
spin_lock_irqsave(ap->lock, flags);
dev = ata_scsi_find_dev(ap, sdev);
if (!dev) {
rc = -ENODEV;
goto unlock;
}
if (dev->flags & ATA_DFLAG_NO_UNLOAD) {
rc = -EOPNOTSUPP;
goto unlock;
}
link = dev->link;
if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS &&
link->eh_context.unloaded_mask & (1 << dev->devno) &&
time_after(dev->unpark_deadline, jiffies))
msecs = jiffies_to_msecs(dev->unpark_deadline - jiffies);
else
msecs = 0;
unlock:
spin_unlock_irq(ap->lock);
return rc ? rc : snprintf(buf, 20, "%u\n", msecs);
}
static ssize_t ata_scsi_park_store(struct device *device,
struct device_attribute *attr,
const char *buf, size_t len)
{
struct scsi_device *sdev = to_scsi_device(device);
struct ata_port *ap;
struct ata_device *dev;
long int input;
unsigned long flags;
int rc;
rc = strict_strtol(buf, 10, &input);
if (rc || input < -2)
return -EINVAL;
if (input > ATA_TMOUT_MAX_PARK) {
rc = -EOVERFLOW;
input = ATA_TMOUT_MAX_PARK;
}
ap = ata_shost_to_port(sdev->host);
spin_lock_irqsave(ap->lock, flags);
dev = ata_scsi_find_dev(ap, sdev);
if (unlikely(!dev)) {
rc = -ENODEV;
goto unlock;
}
if (dev->class != ATA_DEV_ATA) {
rc = -EOPNOTSUPP;
goto unlock;
}
if (input >= 0) {
if (dev->flags & ATA_DFLAG_NO_UNLOAD) {
rc = -EOPNOTSUPP;
goto unlock;
}
dev->unpark_deadline = ata_deadline(jiffies, input);
dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK;
ata_port_schedule_eh(ap);
complete(&ap->park_req_pending);
} else {
switch (input) {
case -1:
dev->flags &= ~ATA_DFLAG_NO_UNLOAD;
break;
case -2:
dev->flags |= ATA_DFLAG_NO_UNLOAD;
break;
}
}
unlock:
spin_unlock_irqrestore(ap->lock, flags);
return rc ? rc : len;
}
DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR,
ata_scsi_park_show, ata_scsi_park_store);
EXPORT_SYMBOL_GPL(dev_attr_unload_heads);
static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
{
cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
@ -269,6 +368,12 @@ DEVICE_ATTR(sw_activity, S_IWUGO | S_IRUGO, ata_scsi_activity_show,
ata_scsi_activity_store);
EXPORT_SYMBOL_GPL(dev_attr_sw_activity);
struct device_attribute *ata_common_sdev_attrs[] = {
&dev_attr_unload_heads,
NULL
};
EXPORT_SYMBOL_GPL(ata_common_sdev_attrs);
static void ata_scsi_invalid_field(struct scsi_cmnd *cmd,
void (*done)(struct scsi_cmnd *))
{
@ -954,6 +1059,9 @@ static int atapi_drain_needed(struct request *rq)
static int ata_scsi_dev_config(struct scsi_device *sdev,
struct ata_device *dev)
{
if (!ata_id_has_unload(dev->id))
dev->flags |= ATA_DFLAG_NO_UNLOAD;
/* configure max sectors */
blk_queue_max_sectors(sdev->request_queue, dev->max_sectors);

3
drivers/ata/libata.h
View File

@ -70,6 +70,7 @@ extern int atapi_passthru16;
extern int libata_fua;
extern int libata_noacpi;
extern int libata_allow_tpm;
extern struct ata_link *ata_dev_phys_link(struct ata_device *dev);
extern void ata_force_cbl(struct ata_port *ap);
extern u64 ata_tf_to_lba(const struct ata_taskfile *tf);
extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf);
@ -107,6 +108,8 @@ extern void ata_qc_issue(struct ata_queued_cmd *qc);
extern void __ata_qc_complete(struct ata_queued_cmd *qc);
extern int atapi_check_dma(struct ata_queued_cmd *qc);
extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
extern bool ata_phys_link_online(struct ata_link *link);
extern bool ata_phys_link_offline(struct ata_link *link);
extern void ata_dev_init(struct ata_device *dev);
extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);
extern int sata_link_init_spd(struct ata_link *link);

34
drivers/ata/pata_bf54x.c
View File

@ -1632,6 +1632,8 @@ static int __devinit bfin_atapi_probe(struct platform_device *pdev)
return -ENODEV;
}
dev_set_drvdata(&pdev->dev, host);
return 0;
}
@ -1648,6 +1650,7 @@ static int __devexit bfin_atapi_remove(struct platform_device *pdev)
struct ata_host *host = dev_get_drvdata(dev);
ata_host_detach(host);
dev_set_drvdata(&pdev->dev, NULL);
peripheral_free_list(atapi_io_port);
@ -1655,27 +1658,44 @@ static int __devexit bfin_atapi_remove(struct platform_device *pdev)
}
#ifdef CONFIG_PM
int bfin_atapi_suspend(struct platform_device *pdev, pm_message_t state)
static int bfin_atapi_suspend(struct platform_device *pdev, pm_message_t state)
{
return 0;
struct ata_host *host = dev_get_drvdata(&pdev->dev);
if (host)
return ata_host_suspend(host, state);
else
return 0;
}
int bfin_atapi_resume(struct platform_device *pdev)
static int bfin_atapi_resume(struct platform_device *pdev)
{
struct ata_host *host = dev_get_drvdata(&pdev->dev);
int ret;
if (host) {
ret = bfin_reset_controller(host);
if (ret) {
printk(KERN_ERR DRV_NAME ": Error during HW init\n");
return ret;
}
ata_host_resume(host);
}
return 0;
}
#else
#define bfin_atapi_suspend NULL
#define bfin_atapi_resume NULL
#endif
static struct platform_driver bfin_atapi_driver = {
.probe = bfin_atapi_probe,
.remove = __devexit_p(bfin_atapi_remove),
.suspend = bfin_atapi_suspend,
.resume = bfin_atapi_resume,
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
#ifdef CONFIG_PM
.suspend = bfin_atapi_suspend,
.resume = bfin_atapi_resume,
#endif
},
};

2
drivers/ata/pata_sil680.c
View File

@ -230,7 +230,7 @@ static u8 sil680_init_chip(struct pci_dev *pdev, int *try_mmio)
tmpbyte & 1, tmpbyte & 0x30);
*try_mmio = 0;
#ifdef CONFIG_PPC_MERGE
#ifdef CONFIG_PPC
if (machine_is(cell))
*try_mmio = (tmpbyte & 1) || pci_resource_start(pdev, 5);
#endif

26
drivers/ata/sata_fsl.c
View File

@ -469,10 +469,10 @@ static bool sata_fsl_qc_fill_rtf(struct ata_queued_cmd *qc)
return true;
}
static int sata_fsl_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
u32 val)
static int sata_fsl_scr_write(struct ata_link *link,
unsigned int sc_reg_in, u32 val)
{
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
struct sata_fsl_host_priv *host_priv = link->ap->host->private_data;
void __iomem *ssr_base = host_priv->ssr_base;
unsigned int sc_reg;
@ -493,10 +493,10 @@ static int sata_fsl_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
return 0;
}
static int sata_fsl_scr_read(struct ata_port *ap, unsigned int sc_reg_in,
u32 *val)
static int sata_fsl_scr_read(struct ata_link *link,
unsigned int sc_reg_in, u32 *val)
{
struct sata_fsl_host_priv *host_priv = ap->host->private_data;
struct sata_fsl_host_priv *host_priv = link->ap->host->private_data;
void __iomem *ssr_base = host_priv->ssr_base;
unsigned int sc_reg;
@ -645,12 +645,12 @@ static int sata_fsl_port_start(struct ata_port *ap)
* Workaround for 8315DS board 3gbps link-up issue,
* currently limit SATA port to GEN1 speed
*/
sata_fsl_scr_read(ap, SCR_CONTROL, &temp);
sata_fsl_scr_read(&ap->link, SCR_CONTROL, &temp);
temp &= ~(0xF << 4);
temp |= (0x1 << 4);
sata_fsl_scr_write(ap, SCR_CONTROL, temp);
sata_fsl_scr_write(&ap->link, SCR_CONTROL, temp);
sata_fsl_scr_read(ap, SCR_CONTROL, &temp);
sata_fsl_scr_read(&ap->link, SCR_CONTROL, &temp);
dev_printk(KERN_WARNING, dev, "scr_control, speed limited to %x\n",
temp);
#endif
@ -868,7 +868,7 @@ issue_srst:
ioread32(CQ + hcr_base),
ioread32(CA + hcr_base), ioread32(CC + hcr_base));
sata_fsl_scr_read(ap, SCR_ERROR, &Serror);
sata_fsl_scr_read(&ap->link, SCR_ERROR, &Serror);
DPRINTK("HStatus = 0x%x\n", ioread32(hcr_base + HSTATUS));
DPRINTK("HControl = 0x%x\n", ioread32(hcr_base + HCONTROL));
@ -972,9 +972,9 @@ static void sata_fsl_error_intr(struct ata_port *ap)
* Handle & Clear SError
*/
sata_fsl_scr_read(ap, SCR_ERROR, &SError);
sata_fsl_scr_read(&ap->link, SCR_ERROR, &SError);
if (unlikely(SError & 0xFFFF0000)) {
sata_fsl_scr_write(ap, SCR_ERROR, SError);
sata_fsl_scr_write(&ap->link, SCR_ERROR, SError);
}
DPRINTK("error_intr,hStat=0x%x,CE=0x%x,DE =0x%x,SErr=0x%x\n",
@ -1091,7 +1091,7 @@ static void sata_fsl_host_intr(struct ata_port *ap)
hstatus = ioread32(hcr_base + HSTATUS);
sata_fsl_scr_read(ap, SCR_ERROR, &SError);
sata_fsl_scr_read(&ap->link, SCR_ERROR, &SError);
if (unlikely(SError & 0xFFFF0000)) {
DPRINTK("serror @host_intr : 0x%x\n", SError);

8
drivers/ata/sata_inic162x.c
View File

@ -269,9 +269,9 @@ static void inic_reset_port(void __iomem *port_base)
writeb(0xff, port_base + PORT_IRQ_STAT);
}
static int inic_scr_read(struct ata_port *ap, unsigned sc_reg, u32 *val)
static int inic_scr_read(struct ata_link *link, unsigned sc_reg, u32 *val)
{
void __iomem *scr_addr = inic_port_base(ap) + PORT_SCR;
void __iomem *scr_addr = inic_port_base(link->ap) + PORT_SCR;
void __iomem *addr;
if (unlikely(sc_reg >= ARRAY_SIZE(scr_map)))
@ -286,9 +286,9 @@ static int inic_scr_read(struct ata_port *ap, unsigned sc_reg, u32 *val)
return 0;
}
static int inic_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val)
static int inic_scr_write(struct ata_link *link, unsigned sc_reg, u32 val)
{
void __iomem *scr_addr = inic_port_base(ap) + PORT_SCR;
void __iomem *scr_addr = inic_port_base(link->ap) + PORT_SCR;
if (unlikely(sc_reg >= ARRAY_SIZE(scr_map)))
return -EINVAL;

28
drivers/ata/sata_mv.c
View File

@ -493,10 +493,10 @@ struct mv_hw_ops {
void (*reset_bus)(struct ata_host *host, void __iomem *mmio);
};
static int mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val);
static int mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val);
static int mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val);
static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val);
static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val);
static int mv5_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val);
static int mv_port_start(struct ata_port *ap);
static void mv_port_stop(struct ata_port *ap);
static int mv_qc_defer(struct ata_queued_cmd *qc);
@ -1070,23 +1070,23 @@ static unsigned int mv_scr_offset(unsigned int sc_reg_in)
return ofs;
}
static int mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val)
static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val)
{
unsigned int ofs = mv_scr_offset(sc_reg_in);
if (ofs != 0xffffffffU) {
*val = readl(mv_ap_base(ap) + ofs);
*val = readl(mv_ap_base(link->ap) + ofs);
return 0;
} else
return -EINVAL;
}
static int mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val)
{
unsigned int ofs = mv_scr_offset(sc_reg_in);
if (ofs != 0xffffffffU) {
writelfl(val, mv_ap_base(ap) + ofs);
writelfl(val, mv_ap_base(link->ap) + ofs);
return 0;
} else
return -EINVAL;
@ -2251,11 +2251,11 @@ static unsigned int mv5_scr_offset(unsigned int sc_reg_in)
return ofs;
}
static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val)
static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val)
{
struct mv_host_priv *hpriv = ap->host->private_data;
struct mv_host_priv *hpriv = link->ap->host->private_data;
void __iomem *mmio = hpriv->base;
void __iomem *addr = mv5_phy_base(mmio, ap->port_no);
void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no);
unsigned int ofs = mv5_scr_offset(sc_reg_in);
if (ofs != 0xffffffffU) {
@ -2265,11 +2265,11 @@ static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val)
return -EINVAL;
}
static int mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
static int mv5_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val)
{
struct mv_host_priv *hpriv = ap->host->private_data;
struct mv_host_priv *hpriv = link->ap->host->private_data;
void __iomem *mmio = hpriv->base;
void __iomem *addr = mv5_phy_base(mmio, ap->port_no);
void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no);
unsigned int ofs = mv5_scr_offset(sc_reg_in);
if (ofs != 0xffffffffU) {

16
drivers/ata/sata_nv.c
View File

@ -302,8 +302,8 @@ static void nv_ck804_host_stop(struct ata_host *host);
static irqreturn_t nv_generic_interrupt(int irq, void *dev_instance);
static irqreturn_t nv_nf2_interrupt(int irq, void *dev_instance);
static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance);
static int nv_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
static int nv_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
static void nv_nf2_freeze(struct ata_port *ap);
static void nv_nf2_thaw(struct ata_port *ap);
@ -1511,21 +1511,21 @@ static irqreturn_t nv_ck804_interrupt(int irq, void *dev_instance)
return ret;
}
static int nv_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
static int nv_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
*val = ioread32(ap->ioaddr.scr_addr + (sc_reg * 4));
*val = ioread32(link->ap->ioaddr.scr_addr + (sc_reg * 4));
return 0;
}
static int nv_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
static int nv_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
iowrite32(val, ap->ioaddr.scr_addr + (sc_reg * 4));
iowrite32(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
return 0;
}
@ -2218,9 +2218,9 @@ static void nv_swncq_host_interrupt(struct ata_port *ap, u16 fis)
if (!pp->qc_active)
return;
if (ap->ops->scr_read(ap, SCR_ERROR, &serror))
if (ap->ops->scr_read(&ap->link, SCR_ERROR, &serror))
return;
ap->ops->scr_write(ap, SCR_ERROR, serror);
ap->ops->scr_write(&ap->link, SCR_ERROR, serror);
if (ata_stat & ATA_ERR) {
ata_ehi_clear_desc(ehi);

16
drivers/ata/sata_promise.c
View File

@ -137,8 +137,8 @@ struct pdc_port_priv {
dma_addr_t pkt_dma;
};
static int pdc_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
static int pdc_sata_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
static int pdc_sata_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
static int pdc_sata_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
static int pdc_ata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static int pdc_common_port_start(struct ata_port *ap);
static int pdc_sata_port_start(struct ata_port *ap);
@ -386,19 +386,21 @@ static int pdc_sata_cable_detect(struct ata_port *ap)
return ATA_CBL_SATA;
}
static int pdc_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
static int pdc_sata_scr_read(struct ata_link *link,
unsigned int sc_reg, u32 *val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
*val = readl(ap->ioaddr.scr_addr + (sc_reg * 4));
*val = readl(link->ap->ioaddr.scr_addr + (sc_reg * 4));
return 0;
}
static int pdc_sata_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
static int pdc_sata_scr_write(struct ata_link *link,
unsigned int sc_reg, u32 val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
writel(val, ap->ioaddr.scr_addr + (sc_reg * 4));
writel(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
return 0;
}
@ -731,7 +733,7 @@ static void pdc_error_intr(struct ata_port *ap, struct ata_queued_cmd *qc,
if (sata_scr_valid(&ap->link)) {
u32 serror;
pdc_sata_scr_read(ap, SCR_ERROR, &serror);
pdc_sata_scr_read(&ap->link, SCR_ERROR, &serror);
ehi->serror |= serror;
}

12
drivers/ata/sata_qstor.c
View File

@ -111,8 +111,8 @@ struct qs_port_priv {
qs_state_t state;
};
static int qs_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
static int qs_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
static int qs_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
static int qs_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
static int qs_ata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static int qs_port_start(struct ata_port *ap);
static void qs_host_stop(struct ata_host *host);
@ -242,11 +242,11 @@ static int qs_prereset(struct ata_link *link, unsigned long deadline)
return ata_sff_prereset(link, deadline);
}
static int qs_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
static int qs_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
*val = readl(ap->ioaddr.scr_addr + (sc_reg * 8));
*val = readl(link->ap->ioaddr.scr_addr + (sc_reg * 8));
return 0;
}
@ -256,11 +256,11 @@ static void qs_error_handler(struct ata_port *ap)
ata_std_error_handler(ap);
}
static int qs_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
static int qs_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
writel(val, ap->ioaddr.scr_addr + (sc_reg * 8));
writel(val, link->ap->ioaddr.scr_addr + (sc_reg * 8));
return 0;
}

16
drivers/ata/sata_sil.c
View File

@ -115,8 +115,8 @@ static int sil_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static int sil_pci_device_resume(struct pci_dev *pdev);
#endif
static void sil_dev_config(struct ata_device *dev);
static int sil_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
static int sil_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
static int sil_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
static int sil_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
static int sil_set_mode(struct ata_link *link, struct ata_device **r_failed);
static void sil_freeze(struct ata_port *ap);
static void sil_thaw(struct ata_port *ap);
@ -317,9 +317,9 @@ static inline void __iomem *sil_scr_addr(struct ata_port *ap,
return NULL;
}
static int sil_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
static int sil_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
{
void __iomem *mmio = sil_scr_addr(ap, sc_reg);
void __iomem *mmio = sil_scr_addr(link->ap, sc_reg);
if (mmio) {
*val = readl(mmio);
@ -328,9 +328,9 @@ static int sil_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
return -EINVAL;
}
static int sil_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
static int sil_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
{
void __iomem *mmio = sil_scr_addr(ap, sc_reg);
void __iomem *mmio = sil_scr_addr(link->ap, sc_reg);
if (mmio) {
writel(val, mmio);
@ -352,8 +352,8 @@ static void sil_host_intr(struct ata_port *ap, u32 bmdma2)
* controllers continue to assert IRQ as long as
* SError bits are pending. Clear SError immediately.
*/
sil_scr_read(ap, SCR_ERROR, &serror);
sil_scr_write(ap, SCR_ERROR, serror);
sil_scr_read(&ap->link, SCR_ERROR, &serror);
sil_scr_write(&ap->link, SCR_ERROR, serror);
/* Sometimes spurious interrupts occur, double check
* it's PHYRDY CHG.

12
drivers/ata/sata_sil24.c
View File

@ -340,8 +340,8 @@ struct sil24_port_priv {
};
static void sil24_dev_config(struct ata_device *dev);
static int sil24_scr_read(struct ata_port *ap, unsigned sc_reg, u32 *val);
static int sil24_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val);
static int sil24_scr_read(struct ata_link *link, unsigned sc_reg, u32 *val);
static int sil24_scr_write(struct ata_link *link, unsigned sc_reg, u32 val);
static int sil24_qc_defer(struct ata_queued_cmd *qc);
static void sil24_qc_prep(struct ata_queued_cmd *qc);
static unsigned int sil24_qc_issue(struct ata_queued_cmd *qc);
@ -504,9 +504,9 @@ static int sil24_scr_map[] = {
[SCR_ACTIVE] = 3,
};
static int sil24_scr_read(struct ata_port *ap, unsigned sc_reg, u32 *val)
static int sil24_scr_read(struct ata_link *link, unsigned sc_reg, u32 *val)
{
void __iomem *scr_addr = sil24_port_base(ap) + PORT_SCONTROL;
void __iomem *scr_addr = sil24_port_base(link->ap) + PORT_SCONTROL;
if (sc_reg < ARRAY_SIZE(sil24_scr_map)) {
void __iomem *addr;
@ -517,9 +517,9 @@ static int sil24_scr_read(struct ata_port *ap, unsigned sc_reg, u32 *val)
return -EINVAL;
}
static int sil24_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val)
static int sil24_scr_write(struct ata_link *link, unsigned sc_reg, u32 val)
{
void __iomem *scr_addr = sil24_port_base(ap) + PORT_SCONTROL;
void __iomem *scr_addr = sil24_port_base(link->ap) + PORT_SCONTROL;
if (sc_reg < ARRAY_SIZE(sil24_scr_map)) {
void __iomem *addr;

28
drivers/ata/sata_sis.c
View File

@ -64,8 +64,8 @@ enum {
};
static int sis_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static int sis_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
static int sis_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
static int sis_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
static int sis_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
static const struct pci_device_id sis_pci_tbl[] = {
{ PCI_VDEVICE(SI, 0x0180), sis_180 }, /* SiS 964/180 */
@ -134,10 +134,11 @@ static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
return addr;
}
static u32 sis_scr_cfg_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
static u32 sis_scr_cfg_read(struct ata_link *link,
unsigned int sc_reg, u32 *val)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg);
u32 val2 = 0;
u8 pmr;
@ -158,10 +159,11 @@ static u32 sis_scr_cfg_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
return 0;
}
static int sis_scr_cfg_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
static int sis_scr_cfg_write(struct ata_link *link,
unsigned int sc_reg, u32 val)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg);
u8 pmr;
if (sc_reg == SCR_ERROR) /* doesn't exist in PCI cfg space */
@ -178,8 +180,9 @@ static int sis_scr_cfg_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
return 0;
}
static int sis_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
static int sis_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
{
struct ata_port *ap = link->ap;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u8 pmr;
@ -187,7 +190,7 @@ static int sis_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
return -EINVAL;
if (ap->flags & SIS_FLAG_CFGSCR)
return sis_scr_cfg_read(ap, sc_reg, val);
return sis_scr_cfg_read(link, sc_reg, val);
pci_read_config_byte(pdev, SIS_PMR, &pmr);
@ -202,8 +205,9 @@ static int sis_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
return 0;
}
static int sis_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
static int sis_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
{
struct ata_port *ap = link->ap;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u8 pmr;
@ -213,7 +217,7 @@ static int sis_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
pci_read_config_byte(pdev, SIS_PMR, &pmr);
if (ap->flags & SIS_FLAG_CFGSCR)
return sis_scr_cfg_write(ap, sc_reg, val);
return sis_scr_cfg_write(link, sc_reg, val);
else {
iowrite32(val, ap->ioaddr.scr_addr + (sc_reg * 4));
if ((pdev->device == 0x0182) || (pdev->device == 0x0183) ||

10
drivers/ata/sata_svw.c
View File

@ -123,20 +123,22 @@ static int k2_sata_check_atapi_dma(struct ata_queued_cmd *qc)
}
}
static int k2_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
static int k2_sata_scr_read(struct ata_link *link,
unsigned int sc_reg, u32 *val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
*val = readl(ap->ioaddr.scr_addr + (sc_reg * 4));
*val = readl(link->ap->ioaddr.scr_addr + (sc_reg * 4));
return 0;
}
static int k2_sata_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
static int k2_sata_scr_write(struct ata_link *link,
unsigned int sc_reg, u32 val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
writel(val, ap->ioaddr.scr_addr + (sc_reg * 4));
writel(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
return 0;
}

24
drivers/ata/sata_uli.c
View File

@ -57,8 +57,8 @@ struct uli_priv {
};
static int uli_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static int uli_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
static int uli_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
static const struct pci_device_id uli_pci_tbl[] = {
{ PCI_VDEVICE(AL, 0x5289), uli_5289 },
@ -107,39 +107,39 @@ static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
return hpriv->scr_cfg_addr[ap->port_no] + (4 * sc_reg);
}
static u32 uli_scr_cfg_read(struct ata_port *ap, unsigned int sc_reg)
static u32 uli_scr_cfg_read(struct ata_link *link, unsigned int sc_reg)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
unsigned int cfg_addr = get_scr_cfg_addr(link->ap, sc_reg);
u32 val;
pci_read_config_dword(pdev, cfg_addr, &val);
return val;
}
static void uli_scr_cfg_write(struct ata_port *ap, unsigned int scr, u32 val)
static void uli_scr_cfg_write(struct ata_link *link, unsigned int scr, u32 val)
{
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
unsigned int cfg_addr = get_scr_cfg_addr(link->ap, scr);
pci_write_config_dword(pdev, cfg_addr, val);
}
static int uli_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
static int uli_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
*val = uli_scr_cfg_read(ap, sc_reg);
*val = uli_scr_cfg_read(link, sc_reg);
return 0;
}
static int uli_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
static int uli_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
{
if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
return -EINVAL;
uli_scr_cfg_write(ap, sc_reg, val);
uli_scr_cfg_write(link, sc_reg, val);
return 0;
}

24
drivers/ata/sata_via.c
View File

@ -68,8 +68,8 @@ enum {
};
static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static int svia_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
static int svia_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
static int svia_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
static int svia_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
static void svia_noop_freeze(struct ata_port *ap);
static int vt6420_prereset(struct ata_link *link, unsigned long deadline);
static int vt6421_pata_cable_detect(struct ata_port *ap);
@ -152,19 +152,19 @@ MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, svia_pci_tbl);
MODULE_VERSION(DRV_VERSION);
static int svia_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
static int svia_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
*val = ioread32(ap->ioaddr.scr_addr + (4 * sc_reg));
*val = ioread32(link->ap->ioaddr.scr_addr + (4 * sc_reg));
return 0;
}
static int svia_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
static int svia_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
iowrite32(val, ap->ioaddr.scr_addr + (4 * sc_reg));
iowrite32(val, link->ap->ioaddr.scr_addr + (4 * sc_reg));
return 0;
}
@ -210,20 +210,20 @@ static int vt6420_prereset(struct ata_link *link, unsigned long deadline)
goto skip_scr;
/* Resume phy. This is the old SATA resume sequence */
svia_scr_write(ap, SCR_CONTROL, 0x300);
svia_scr_read(ap, SCR_CONTROL, &scontrol); /* flush */
svia_scr_write(link, SCR_CONTROL, 0x300);
svia_scr_read(link, SCR_CONTROL, &scontrol); /* flush */
/* wait for phy to become ready, if necessary */
do {
msleep(200);
svia_scr_read(ap, SCR_STATUS, &sstatus);
svia_scr_read(link, SCR_STATUS, &sstatus);
if ((sstatus & 0xf) != 1)
break;
} while (time_before(jiffies, timeout));
/* open code sata_print_link_status() */
svia_scr_read(ap, SCR_STATUS, &sstatus);
svia_scr_read(ap, SCR_CONTROL, &scontrol);
svia_scr_read(link, SCR_STATUS, &sstatus);
svia_scr_read(link, SCR_CONTROL, &scontrol);
online = (sstatus & 0xf) == 0x3;
@ -232,7 +232,7 @@ static int vt6420_prereset(struct ata_link *link, unsigned long deadline)
online ? "up" : "down", sstatus, scontrol);
/* SStatus is read one more time */
svia_scr_read(ap, SCR_STATUS, &sstatus);
svia_scr_read(link, SCR_STATUS, &sstatus);
if (!online) {
/* tell EH to bail */

10
drivers/ata/sata_vsc.c
View File

@ -98,20 +98,22 @@ enum {
VSC_SATA_INT_PHY_CHANGE),
};
static int vsc_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
static int vsc_sata_scr_read(struct ata_link *link,
unsigned int sc_reg, u32 *val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
*val = readl(ap->ioaddr.scr_addr + (sc_reg * 4));
*val = readl(link->ap->ioaddr.scr_addr + (sc_reg * 4));
return 0;
}
static int vsc_sata_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
static int vsc_sata_scr_write(struct ata_link *link,
unsigned int sc_reg, u32 val)
{
if (sc_reg > SCR_CONTROL)
return -EINVAL;
writel(val, ap->ioaddr.scr_addr + (sc_reg * 4));
writel(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
return 0;
}

8
drivers/scsi/libsas/sas_ata.c
View File

@ -294,10 +294,10 @@ static void sas_ata_post_internal(struct ata_queued_cmd *qc)
}
}
static int sas_ata_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
static int sas_ata_scr_write(struct ata_link *link, unsigned int sc_reg_in,
u32 val)
{
struct domain_device *dev = ap->private_data;
struct domain_device *dev = link->ap->private_data;
SAS_DPRINTK("STUB %s\n", __func__);
switch (sc_reg_in) {
@ -319,10 +319,10 @@ static int sas_ata_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
return 0;
}
static int sas_ata_scr_read(struct ata_port *ap, unsigned int sc_reg_in,
static int sas_ata_scr_read(struct ata_link *link, unsigned int sc_reg_in,
u32 *val)
{
struct domain_device *dev = ap->private_data;
struct domain_device *dev = link->ap->private_data;
SAS_DPRINTK("STUB %s\n", __func__);
switch (sc_reg_in) {

9
include/linux/ata.h
View File

@ -667,6 +667,15 @@ static inline int ata_id_has_dword_io(const u16 *id)
return 0;
}
static inline int ata_id_has_unload(const u16 *id)
{
if (ata_id_major_version(id) >= 7 &&
(id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
id[ATA_ID_CFSSE] & (1 << 13))
return 1;
return 0;
}
static inline int ata_id_current_chs_valid(const u16 *id)
{
/* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command

66
include/linux/libata.h
View File

@ -146,6 +146,7 @@ enum {
ATA_DFLAG_SPUNDOWN = (1 << 14), /* XXX: for spindown_compat */
ATA_DFLAG_SLEEPING = (1 << 15), /* device is sleeping */
ATA_DFLAG_DUBIOUS_XFER = (1 << 16), /* data transfer not verified */
ATA_DFLAG_NO_UNLOAD = (1 << 17), /* device doesn't support unload */
ATA_DFLAG_INIT_MASK = (1 << 24) - 1,
ATA_DFLAG_DETACH = (1 << 24),
@ -244,6 +245,7 @@ enum {
ATA_TMOUT_BOOT = 30000, /* heuristic */
ATA_TMOUT_BOOT_QUICK = 7000, /* heuristic */
ATA_TMOUT_INTERNAL_QUICK = 5000,
ATA_TMOUT_MAX_PARK = 30000,
/* FIXME: GoVault needs 2s but we can't afford that without
* parallel probing. 800ms is enough for iVDR disk
@ -319,8 +321,11 @@ enum {
ATA_EH_RESET = ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
ATA_EH_ENABLE_LINK = (1 << 3),
ATA_EH_LPM = (1 << 4), /* link power management action */
ATA_EH_PARK = (1 << 5), /* unload heads and stop I/O */
ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE,
ATA_EH_PERDEV_MASK = ATA_EH_REVALIDATE | ATA_EH_PARK,
ATA_EH_ALL_ACTIONS = ATA_EH_REVALIDATE | ATA_EH_RESET |
ATA_EH_ENABLE_LINK | ATA_EH_LPM,
/* ata_eh_info->flags */
ATA_EHI_HOTPLUGGED = (1 << 0), /* could have been hotplugged */
@ -452,6 +457,7 @@ enum link_pm {
MEDIUM_POWER,
};
extern struct device_attribute dev_attr_link_power_management_policy;
extern struct device_attribute dev_attr_unload_heads;
extern struct device_attribute dev_attr_em_message_type;
extern struct device_attribute dev_attr_em_message;
extern struct device_attribute dev_attr_sw_activity;
@ -554,8 +560,8 @@ struct ata_ering {
struct ata_device {
struct ata_link *link;
unsigned int devno; /* 0 or 1 */
unsigned long flags; /* ATA_DFLAG_xxx */
unsigned int horkage; /* List of broken features */
unsigned long flags; /* ATA_DFLAG_xxx */
struct scsi_device *sdev; /* attached SCSI device */
#ifdef CONFIG_ATA_ACPI
acpi_handle acpi_handle;
@ -564,6 +570,7 @@ struct ata_device {
/* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */
u64 n_sectors; /* size of device, if ATA */
unsigned int class; /* ATA_DEV_xxx */
unsigned long unpark_deadline;
u8 pio_mode;
u8 dma_mode;
@ -621,6 +628,7 @@ struct ata_eh_context {
[ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
unsigned int classes[ATA_MAX_DEVICES];
unsigned int did_probe_mask;
unsigned int unloaded_mask;
unsigned int saved_ncq_enabled;
u8 saved_xfer_mode[ATA_MAX_DEVICES];
/* timestamp for the last reset attempt or success */
@ -688,7 +696,8 @@ struct ata_port {
unsigned int qc_active;
int nr_active_links; /* #links with active qcs */
struct ata_link link; /* host default link */
struct ata_link link; /* host default link */
struct ata_link *slave_link; /* see ata_slave_link_init() */
int nr_pmp_links; /* nr of available PMP links */
struct ata_link *pmp_link; /* array of PMP links */
@ -709,6 +718,7 @@ struct ata_port {
struct list_head eh_done_q;
wait_queue_head_t eh_wait_q;
int eh_tries;
struct completion park_req_pending;
pm_message_t pm_mesg;
int *pm_result;
@ -772,8 +782,8 @@ struct ata_port_operations {
/*
* Optional features
*/
int (*scr_read)(struct ata_port *ap, unsigned int sc_reg, u32 *val);
int (*scr_write)(struct ata_port *ap, unsigned int sc_reg, u32 val);
int (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
int (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
void (*pmp_attach)(struct ata_port *ap);
void (*pmp_detach)(struct ata_port *ap);
int (*enable_pm)(struct ata_port *ap, enum link_pm policy);
@ -895,6 +905,7 @@ extern void ata_port_disable(struct ata_port *);
extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
const struct ata_port_info * const * ppi, int n_ports);
extern int ata_slave_link_init(struct ata_port *ap);
extern int ata_host_start(struct ata_host *host);
extern int ata_host_register(struct ata_host *host,
struct scsi_host_template *sht);
@ -920,8 +931,8 @@ extern int sata_scr_valid(struct ata_link *link);
extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
extern int ata_link_online(struct ata_link *link);
extern int ata_link_offline(struct ata_link *link);
extern bool ata_link_online(struct ata_link *link);
extern bool ata_link_offline(struct ata_link *link);
#ifdef CONFIG_PM
extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
extern void ata_host_resume(struct ata_host *host);
@ -1098,6 +1109,7 @@ extern void ata_std_error_handler(struct ata_port *ap);
*/
extern const struct ata_port_operations ata_base_port_ops;
extern const struct ata_port_operations sata_port_ops;
extern struct device_attribute *ata_common_sdev_attrs[];
#define ATA_BASE_SHT(drv_name) \
.module = THIS_MODULE, \
@ -1112,7 +1124,8 @@ extern const struct ata_port_operations sata_port_ops;
.proc_name = drv_name, \
.slave_configure = ata_scsi_slave_config, \
.slave_destroy = ata_scsi_slave_destroy, \
.bios_param = ata_std_bios_param
.bios_param = ata_std_bios_param, \
.sdev_attrs = ata_common_sdev_attrs
#define ATA_NCQ_SHT(drv_name) \
ATA_BASE_SHT(drv_name), \
@ -1134,7 +1147,7 @@ static inline bool sata_pmp_attached(struct ata_port *ap)
static inline int ata_is_host_link(const struct ata_link *link)
{
return link == &link->ap->link;
return link == &link->ap->link || link == link->ap->slave_link;
}
#else /* CONFIG_SATA_PMP */
static inline bool sata_pmp_supported(struct ata_port *ap)
@ -1167,7 +1180,7 @@ static inline int sata_srst_pmp(struct ata_link *link)
printk("%sata%u: "fmt, lv, (ap)->print_id , ##args)
#define ata_link_printk(link, lv, fmt, args...) do { \
if (sata_pmp_attached((link)->ap)) \
if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link) \
printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id, \
(link)->pmp , ##args); \
else \
@ -1265,34 +1278,17 @@ static inline int ata_link_active(struct ata_link *link)
return ata_tag_valid(link->active_tag) || link->sactive;
}
static inline struct ata_link *ata_port_first_link(struct ata_port *ap)
{
if (sata_pmp_attached(ap))
return ap->pmp_link;
return &ap->link;
}
extern struct ata_link *__ata_port_next_link(struct ata_port *ap,
struct ata_link *link,
bool dev_only);
static inline struct ata_link *ata_port_next_link(struct ata_link *link)
{
struct ata_port *ap = link->ap;
if (ata_is_host_link(link)) {
if (!sata_pmp_attached(ap))
return NULL;
return ap->pmp_link;
}
if (++link < ap->nr_pmp_links + ap->pmp_link)
return link;
return NULL;
}
#define __ata_port_for_each_link(lk, ap) \
for ((lk) = &(ap)->link; (lk); (lk) = ata_port_next_link(lk))
#define __ata_port_for_each_link(link, ap) \
for ((link) = __ata_port_next_link((ap), NULL, false); (link); \
(link) = __ata_port_next_link((ap), (link), false))
#define ata_port_for_each_link(link, ap) \
for ((link) = ata_port_first_link(ap); (link); \
(link) = ata_port_next_link(link))
for ((link) = __ata_port_next_link((ap), NULL, true); (link); \
(link) = __ata_port_next_link((ap), (link), true))
#define ata_link_for_each_dev(dev, link) \
for ((dev) = (link)->device; \