Introduce ata_link. It abstracts PHY and sits between ata_port and
ata_device. This new level of abstraction is necessary to support
SATA Port Multiplier, which basically adds a bunch of links (PHYs) to
a ATA host port. Fields related to command execution, spd_limit and
EH are per-link and thus moved to ata_link.
Except for the host link, each link can be connected to at most one
device and thus contains one struct ata_device. Slave device (PATA or
emulated SATA) is a special case for the host link and is handled by
struct ata_device storage __dev1 put right after the host link in
struct ata_port.
This patch only defines the host link. Multiple link handling will be
added later. Also, a lot of ap->link derefences are added but many of
them will be removed as each part is converted to deal directly with
ata_link instead of ata_port.
This patch introduces no behavior change.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
---
drivers/scsi/ahci.c | 20 +++---
drivers/scsi/ata_piix.c | 4 +
drivers/scsi/libata-bmdma.c | 4 +
drivers/scsi/libata-core.c | 147 +++++++++++++++++++++++--------------------
drivers/scsi/libata-eh.c | 100 +++++++++++++++--------------
drivers/scsi/libata-scsi.c | 40 ++++++------
drivers/scsi/pdc_adma.c | 4 +
drivers/scsi/sata_mv.c | 6 +-
drivers/scsi/sata_nv.c | 4 +
drivers/scsi/sata_promise.c | 4 +
drivers/scsi/sata_qstor.c | 4 +
drivers/scsi/sata_sil.c | 8 +-
drivers/scsi/sata_sil24.c | 10 +--
drivers/scsi/sata_sx4.c | 4 +
drivers/scsi/sata_vsc.c | 2 -
include/linux/libata.h | 39 +++++++----
16 files changed, 211 insertions(+), 189 deletions(-)
a083d01fa61bd520c3fc5b6ca4b47f5295a15513
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 30c2722..e3ec344 100644
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -651,7 +651,7 @@ static int ahci_softreset(struct ata_por
/* restart engine */
ahci_start_engine(ap);
- ata_tf_init(ap->device, &tf);
+ ata_tf_init(ap->link.device, &tf);
fis = pp->cmd_tbl;
/* issue the first D2H Register FIS */
@@ -726,7 +726,7 @@ static int ahci_hardreset(struct ata_por
ahci_stop_engine(ap);
/* clear D2H reception area to properly wait for D2H FIS */
- ata_tf_init(ap->device, &tf);
+ ata_tf_init(ap->link.device, &tf);
tf.command = 0xff;
ata_tf_to_fis(&tf, d2h_fis, 0);
@@ -845,7 +845,7 @@ static void ahci_qc_prep(struct ata_queu
static void ahci_error_intr(struct ata_port *ap, u32 irq_stat)
{
struct ahci_port_priv *pp = ap->private_data;
- struct ata_eh_info *ehi = &ap->eh_info;
+ struct ata_eh_info *ehi = &ap->link.eh_info;
unsigned int err_mask = 0, action = 0;
struct ata_queued_cmd *qc;
u32 serror;
@@ -892,7 +892,7 @@ static void ahci_error_intr(struct ata_p
ehi->serror |= serror;
ehi->action |= action;
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc)
qc->err_mask |= err_mask;
else
@@ -908,7 +908,7 @@ static void ahci_host_intr(struct ata_po
{
void __iomem *mmio = ap->host_set->mmio_base;
void __iomem *port_mmio = ahci_port_base(mmio, ap->port_no);
- struct ata_eh_info *ehi = &ap->eh_info;
+ struct ata_eh_info *ehi = &ap->link.eh_info;
u32 status, qc_active;
int rc;
@@ -920,7 +920,7 @@ static void ahci_host_intr(struct ata_po
return;
}
- if (ap->sactive)
+ if (ap->link.sactive)
qc_active = readl(port_mmio + PORT_SCR_ACT);
else
qc_active = readl(port_mmio + PORT_CMD_ISSUE);
@@ -938,13 +938,13 @@ static void ahci_host_intr(struct ata_po
/* hmmm... a spurious interupt */
/* some devices send D2H reg with I bit set during NCQ command phase */
- if (ap->sactive && status & PORT_IRQ_D2H_REG_FIS)
+ if (ap->link.sactive && status & PORT_IRQ_D2H_REG_FIS)
return;
/* ignore interim PIO setup fis interrupts */
- if (ata_tag_valid(ap->active_tag)) {
+ if (ata_tag_valid(ap->link.active_tag)) {
struct ata_queued_cmd *qc =
- ata_qc_from_tag(ap, ap->active_tag);
+ ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && qc->tf.protocol == ATA_PROT_PIO &&
(status & PORT_IRQ_PIOS_FIS))
@@ -954,7 +954,7 @@ static void ahci_host_intr(struct ata_po
if (ata_ratelimit())
ata_port_printk(ap, KERN_INFO, "spurious interrupt "
"(irq_stat 0x%x active_tag %d sactive 0x%x)\n",
- status, ap->active_tag, ap->sactive);
+ status, ap->link.active_tag, ap->link.sactive);
}
static void ahci_irq_clear(struct ata_port *ap)
diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c
index 94b1261..9e24049 100644
--- a/drivers/scsi/ata_piix.c
+++ b/drivers/scsi/ata_piix.c
@@ -475,7 +475,7 @@ static int piix_pata_prereset(struct ata
if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->hard_port_no])) {
ata_port_printk(ap, KERN_INFO, "port disabled. ignoring.\n");
- ap->eh_context.i.action &= ~ATA_EH_RESET_MASK;
+ ap->link.eh_context.i.action &= ~ATA_EH_RESET_MASK;
return 0;
}
@@ -549,7 +549,7 @@ static int piix_sata_prereset(struct ata
if (!present_mask) {
ata_port_printk(ap, KERN_INFO, "SATA port has no device.\n");
- ap->eh_context.i.action &= ~ATA_EH_RESET_MASK;
+ ap->link.eh_context.i.action &= ~ATA_EH_RESET_MASK;
return 0;
}
diff --git a/drivers/scsi/libata-bmdma.c b/drivers/scsi/libata-bmdma.c
index 9ce221f..c931a26 100644
--- a/drivers/scsi/libata-bmdma.c
+++ b/drivers/scsi/libata-bmdma.c
@@ -714,12 +714,12 @@ void ata_bmdma_drive_eh(struct ata_port
ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
ata_postreset_fn_t postreset)
{
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
struct ata_queued_cmd *qc;
unsigned long flags;
int thaw = 0;
- qc = __ata_qc_from_tag(ap, ap->active_tag);
+ qc = __ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && !(qc->flags & ATA_QCFLAG_FAILED))
qc = NULL;
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 1021c72..9e19d12 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -421,7 +421,7 @@ static const char *sata_spd_string(unsig
void ata_dev_disable(struct ata_device *dev)
{
- if (ata_dev_enabled(dev) && ata_msg_drv(dev->ap)) {
+ if (ata_dev_enabled(dev) && ata_msg_drv(dev->link->ap)) {
ata_dev_printk(dev, KERN_WARNING, "disabled\n");
dev->class++;
}
@@ -790,7 +790,7 @@ void ata_dev_select(struct ata_port *ap,
ap->ops->dev_select(ap, device);
if (wait) {
- if (can_sleep && ap->device[device].class == ATA_DEV_ATAPI)
+ if (can_sleep && ap->link.device[device].class == ATA_DEV_ATAPI)
msleep(150);
ata_wait_idle(ap);
}
@@ -996,7 +996,8 @@ unsigned ata_exec_internal(struct ata_de
struct ata_taskfile *tf, const u8 *cdb,
int dma_dir, void *buf, unsigned int buflen)
{
- struct ata_port *ap = dev->ap;
+ struct ata_link *link = dev->link;
+ struct ata_port *ap = link->ap;
u8 command = tf->command;
struct ata_queued_cmd *qc;
unsigned int tag, preempted_tag;
@@ -1036,11 +1037,11 @@ unsigned ata_exec_internal(struct ata_de
qc->dev = dev;
ata_qc_reinit(qc);
- preempted_tag = ap->active_tag;
- preempted_sactive = ap->sactive;
+ preempted_tag = link->active_tag;
+ preempted_sactive = link->sactive;
preempted_qc_active = ap->qc_active;
- ap->active_tag = ATA_TAG_POISON;
- ap->sactive = 0;
+ link->active_tag = ATA_TAG_POISON;
+ link->sactive = 0;
ap->qc_active = 0;
/* prepare & issue qc */
@@ -1108,8 +1109,8 @@ unsigned ata_exec_internal(struct ata_de
err_mask = qc->err_mask;
ata_qc_free(qc);
- ap->active_tag = preempted_tag;
- ap->sactive = preempted_sactive;
+ link->active_tag = preempted_tag;
+ link->sactive = preempted_sactive;
ap->qc_active = preempted_qc_active;
/* XXX - Some LLDDs (sata_mv) disable port on command failure.
@@ -1214,7 +1215,7 @@ unsigned int ata_pio_need_iordy(const st
int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
int post_reset, u16 *id)
{
- struct ata_port *ap = dev->ap;
+ struct ata_port *ap = dev->link->ap;
unsigned int class = *p_class;
struct ata_taskfile tf;
unsigned int err_mask = 0;
@@ -1300,13 +1301,14 @@ int ata_dev_read_id(struct ata_device *d
static inline u8 ata_dev_knobble(struct ata_device *dev)
{
- return ((dev->ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(dev->id)));
+ struct ata_port *ap = dev->link->ap;
+ return ((ap->cbl == ATA_CBL_SATA) && (!ata_id_is_sata(dev->id)));
}
static void ata_dev_config_ncq(struct ata_device *dev,
char *desc, size_t desc_sz)
{
- struct ata_port *ap = dev->ap;
+ struct ata_port *ap = dev->link->ap;
int hdepth = 0, ddepth = ata_id_queue_depth(dev->id);
if (!ata_id_has_ncq(dev->id)) {
@@ -1334,7 +1336,7 @@ static void ata_set_port_max_cmd_len(str
for (i = 0; i < ATA_MAX_DEVICES; i++)
ap->host->max_cmd_len = max_t(unsigned int,
ap->host->max_cmd_len,
- ap->device[i].cdb_len);
+ ap->link.device[i].cdb_len);
}
}
@@ -1354,7 +1356,7 @@ static void ata_set_port_max_cmd_len(str
*/
int ata_dev_configure(struct ata_device *dev, int print_info)
{
- struct ata_port *ap = dev->ap;
+ struct ata_port *ap = dev->link->ap;
const u16 *id = dev->id;
unsigned int xfer_mask;
int rc;
@@ -1547,7 +1549,7 @@ static int ata_bus_probe(struct ata_port
ap->ops->phy_reset(ap);
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
if (!(ap->flags & ATA_FLAG_DISABLED) &&
dev->class != ATA_DEV_UNKNOWN)
@@ -1564,11 +1566,11 @@ static int ata_bus_probe(struct ata_port
state is undefined. Record the mode */
for (i = 0; i < ATA_MAX_DEVICES; i++)
- ap->device[i].pio_mode = XFER_PIO_0;
+ ap->link.device[i].pio_mode = XFER_PIO_0;
/* read IDENTIFY page and configure devices */
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
if (tries[i])
dev->class = classes[i];
@@ -1593,7 +1595,7 @@ static int ata_bus_probe(struct ata_port
}
for (i = 0; i < ATA_MAX_DEVICES; i++)
- if (ata_dev_enabled(&ap->device[i]))
+ if (ata_dev_enabled(&ap->link.device[i]))
return 0;
/* no device present, disable port */
@@ -1754,8 +1756,8 @@ void sata_phy_reset(struct ata_port *ap)
struct ata_device *ata_dev_pair(struct ata_device *adev)
{
- struct ata_port *ap = adev->ap;
- struct ata_device *pair = &ap->device[1 - adev->devno];
+ struct ata_link *link = adev->link;
+ struct ata_device *pair = &link->device[1 - adev->devno];
if (!ata_dev_enabled(pair))
return NULL;
return pair;
@@ -1776,8 +1778,8 @@ struct ata_device *ata_dev_pair(struct a
void ata_port_disable(struct ata_port *ap)
{
- ap->device[0].class = ATA_DEV_NONE;
- ap->device[1].class = ATA_DEV_NONE;
+ ap->link.device[0].class = ATA_DEV_NONE;
+ ap->link.device[1].class = ATA_DEV_NONE;
ap->flags |= ATA_FLAG_DISABLED;
}
@@ -1804,7 +1806,7 @@ int sata_down_spd_limit(struct ata_port
if (rc)
return rc;
- mask = ap->sata_spd_limit;
+ mask = ap->link.sata_spd_limit;
if (mask <= 1)
return -EINVAL;
highbit = fls(mask) - 1;
@@ -1818,7 +1820,7 @@ int sata_down_spd_limit(struct ata_port
if (!mask)
return -EINVAL;
- ap->sata_spd_limit = mask;
+ ap->link.sata_spd_limit = mask;
ata_port_printk(ap, KERN_WARNING, "limiting SATA link speed to %s\n",
sata_spd_string(fls(mask)));
@@ -1830,10 +1832,10 @@ static int __sata_set_spd_needed(struct
{
u32 spd, limit;
- if (ap->sata_spd_limit == UINT_MAX)
+ if (ap->link.sata_spd_limit == UINT_MAX)
limit = 0;
else
- limit = fls(ap->sata_spd_limit);
+ limit = fls(ap->link.sata_spd_limit);
spd = (*scontrol >> 4) & 0xf;
*scontrol = (*scontrol & ~0xf0) | ((limit & 0xf) << 4);
@@ -1846,7 +1848,7 @@ static int __sata_set_spd_needed(struct
* @ap: Port in question
*
* Test whether the spd limit in SControl matches
- * @ap->sata_spd_limit. This function is used to determine
+ * @ap->link.sata_spd_limit. This function is used to determine
* whether hardreset is necessary to apply SATA spd
* configuration.
*
@@ -2146,7 +2148,7 @@ int ata_set_mode(struct ata_port *ap, st
* return error code and failing device on failure.
*/
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- if (ata_dev_ready(&ap->device[i])) {
+ if (ata_dev_ready(&ap->link.device[i])) {
ap->ops->set_mode(ap);
break;
}
@@ -2158,7 +2160,7 @@ int ata_set_mode(struct ata_port *ap, st
for (i = 0; i < ATA_MAX_DEVICES; i++) {
unsigned int pio_mask, dma_mask;
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
if (!ata_dev_enabled(dev))
continue;
@@ -2179,7 +2181,7 @@ int ata_set_mode(struct ata_port *ap, st
/* step 2: always set host PIO timings */
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
if (!ata_dev_enabled(dev))
continue;
@@ -2197,7 +2199,7 @@ int ata_set_mode(struct ata_port *ap, st
/* step 3: set host DMA timings */
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
if (!ata_dev_enabled(dev) || !dev->dma_mode)
continue;
@@ -2210,7 +2212,7 @@ int ata_set_mode(struct ata_port *ap, st
/* step 4: update devices' xfer mode */
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
/* don't udpate suspended devices' xfer mode */
if (!ata_dev_ready(dev))
@@ -2419,6 +2421,7 @@ static unsigned int ata_bus_softreset(st
void ata_bus_reset(struct ata_port *ap)
{
+ struct ata_device *device = ap->link.device;
struct ata_ioports *ioaddr = &ap->ioaddr;
unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS;
u8 err;
@@ -2451,23 +2454,23 @@ void ata_bus_reset(struct ata_port *ap)
/*
* determine by signature whether we have ATA or ATAPI devices
*/
- ap->device[0].class = ata_dev_try_classify(ap, 0, &err);
+ device[0].class = ata_dev_try_classify(ap, 0, &err);
if ((slave_possible) && (err != 0x81))
- ap->device[1].class = ata_dev_try_classify(ap, 1, &err);
+ device[1].class = ata_dev_try_classify(ap, 1, &err);
/* re-enable interrupts */
if (ap->ioaddr.ctl_addr) /* FIXME: hack. create a hook instead */
ata_irq_on(ap);
/* is double-select really necessary? */
- if (ap->device[1].class != ATA_DEV_NONE)
+ if (device[1].class != ATA_DEV_NONE)
ap->ops->dev_select(ap, 1);
- if (ap->device[0].class != ATA_DEV_NONE)
+ if (device[0].class != ATA_DEV_NONE)
ap->ops->dev_select(ap, 0);
/* if no devices were detected, disable this port */
- if ((ap->device[0].class == ATA_DEV_NONE) &&
- (ap->device[1].class == ATA_DEV_NONE))
+ if ((device[0].class == ATA_DEV_NONE) &&
+ (device[1].class == ATA_DEV_NONE))
goto err_out;
if (ap->flags & (ATA_FLAG_SATA_RESET | ATA_FLAG_SRST)) {
@@ -2583,7 +2586,7 @@ int sata_phy_resume(struct ata_port *ap,
static void ata_wait_spinup(struct ata_port *ap)
{
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
unsigned long end, secs;
int rc;
@@ -2624,7 +2627,7 @@ static void ata_wait_spinup(struct ata_p
*/
int ata_std_prereset(struct ata_port *ap)
{
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
const unsigned long *timing = sata_ehc_deb_timing(ehc);
int rc;
@@ -2730,7 +2733,7 @@ int ata_std_softreset(struct ata_port *a
*/
int sata_std_hardreset(struct ata_port *ap, unsigned int *class)
{
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
const unsigned long *timing = sata_ehc_deb_timing(ehc);
u32 scontrol;
int rc;
@@ -2992,7 +2995,7 @@ static int ata_dev_same_device(struct at
int ata_dev_revalidate(struct ata_device *dev, int post_reset)
{
unsigned int class = dev->class;
- u16 *id = (void *)dev->ap->sector_buf;
+ u16 *id = (void *)dev->link->ap->sector_buf;
int rc;
if (!ata_dev_enabled(dev)) {
@@ -3079,7 +3082,7 @@ static int ata_dma_blacklisted(const str
* DMA blacklist those ATAPI devices with CDB-intr (and use PIO)
* if the LLDD handles only interrupts in the HSM_ST_LAST state.
*/
- if ((dev->ap->flags & ATA_FLAG_PIO_POLLING) &&
+ if ((dev->link->ap->flags & ATA_FLAG_PIO_POLLING) &&
(dev->flags & ATA_DFLAG_CDB_INTR))
return 1;
@@ -3119,7 +3122,8 @@ static int ata_dma_blacklisted(const str
*/
static void ata_dev_xfermask(struct ata_device *dev)
{
- struct ata_port *ap = dev->ap;
+ struct ata_link *link = dev->link;
+ struct ata_port *ap = link->ap;
struct ata_host_set *hs = ap->host_set;
unsigned long xfer_mask;
int i;
@@ -3135,7 +3139,7 @@ static void ata_dev_xfermask(struct ata_
/* FIXME: Use port-wide xfermask for now */
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- struct ata_device *d = &ap->device[i];
+ struct ata_device *d = &link->device[i];
if (ata_dev_absent(d))
continue;
@@ -3641,7 +3645,7 @@ #endif /* __BIG_ENDIAN */
void ata_mmio_data_xfer(struct ata_device *adev, unsigned char *buf,
unsigned int buflen, int write_data)
{
- struct ata_port *ap = adev->ap;
+ struct ata_port *ap = adev->link->ap;
unsigned int i;
unsigned int words = buflen >> 1;
u16 *buf16 = (u16 *) buf;
@@ -3687,7 +3691,7 @@ void ata_mmio_data_xfer(struct ata_devic
void ata_pio_data_xfer(struct ata_device *adev, unsigned char *buf,
unsigned int buflen, int write_data)
{
- struct ata_port *ap = adev->ap;
+ struct ata_port *ap = adev->link->ap;
unsigned int words = buflen >> 1;
/* Transfer multiple of 2 bytes */
@@ -4389,7 +4393,7 @@ static struct ata_queued_cmd *ata_qc_new
struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev)
{
- struct ata_port *ap = dev->ap;
+ struct ata_port *ap = dev->link->ap;
struct ata_queued_cmd *qc;
qc = ata_qc_new(ap);
@@ -4432,6 +4436,7 @@ void ata_qc_free(struct ata_queued_cmd *
void __ata_qc_complete(struct ata_queued_cmd *qc)
{
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));
@@ -4441,9 +4446,9 @@ void __ata_qc_complete(struct ata_queued
/* command should be marked inactive atomically with qc completion */
if (qc->tf.protocol == ATA_PROT_NCQ)
- ap->sactive &= ~(1 << qc->tag);
+ link->sactive &= ~(1 << qc->tag);
else
- ap->active_tag = ATA_TAG_POISON;
+ link->active_tag = ATA_TAG_POISON;
/* atapi: mark qc as inactive to prevent the interrupt handler
* from completing the command twice later, before the error handler
@@ -4604,19 +4609,20 @@ static inline int ata_should_dma_map(str
void ata_qc_issue(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
+ struct ata_link *link = qc->dev->link;
/* Make sure only one non-NCQ command is outstanding. The
* check is skipped for old EH because it reuses active qc to
* request ATAPI sense.
*/
- WARN_ON(ap->ops->error_handler && ata_tag_valid(ap->active_tag));
+ WARN_ON(ap->ops->error_handler && ata_tag_valid(link->active_tag));
if (qc->tf.protocol == ATA_PROT_NCQ) {
- WARN_ON(ap->sactive & (1 << qc->tag));
- ap->sactive |= 1 << qc->tag;
+ WARN_ON(link->sactive & (1 << qc->tag));
+ link->sactive |= 1 << qc->tag;
} else {
- WARN_ON(ap->sactive);
- ap->active_tag = qc->tag;
+ WARN_ON(link->sactive);
+ link->active_tag = qc->tag;
}
qc->flags |= ATA_QCFLAG_ACTIVE;
@@ -4907,7 +4913,7 @@ irqreturn_t ata_interrupt (int irq, void
!(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)) &&
(qc->flags & ATA_QCFLAG_ACTIVE))
handled |= ata_host_intr(ap, qc);
@@ -5107,8 +5113,8 @@ static int ata_host_set_request_pm(struc
}
ap->pflags |= ATA_PFLAG_PM_PENDING;
- ap->eh_info.action |= action;
- ap->eh_info.flags |= ehi_flags;
+ ap->link.eh_info.action |= action;
+ ap->link.eh_info.flags |= ehi_flags;
ata_port_schedule_eh(ap);
@@ -5157,7 +5163,7 @@ int ata_host_set_suspend(struct ata_host
struct ata_port *ap = host_set->ports[i];
for (j = 0; j < ATA_MAX_DEVICES; j++) {
- struct ata_device *dev = &ap->device[j];
+ struct ata_device *dev = &ap->link.device[j];
if (ata_dev_ready(dev)) {
ata_port_printk(ap, KERN_WARNING,
@@ -5288,11 +5294,12 @@ static void ata_host_remove(struct ata_p
*/
void ata_dev_init(struct ata_device *dev)
{
- struct ata_port *ap = dev->ap;
+ struct ata_link *link = dev->link;
+ struct ata_port *ap = link->ap;
unsigned long flags;
/* SATA spd limit is bound to the first device */
- ap->sata_spd_limit = ap->hw_sata_spd_limit;
+ link->sata_spd_limit = link->hw_sata_spd_limit;
/* High bits of dev->flags are used to record warm plug
* requests which occur asynchronously. Synchronize using
@@ -5350,8 +5357,8 @@ static void ata_host_init(struct ata_por
ap->udma_mask = ent->udma_mask;
ap->flags |= ent->host_flags;
ap->ops = ent->port_ops;
- ap->hw_sata_spd_limit = UINT_MAX;
- ap->active_tag = ATA_TAG_POISON;
+ ap->link.hw_sata_spd_limit = UINT_MAX;
+ ap->link.active_tag = ATA_TAG_POISON;
ap->last_ctl = 0xFF;
#if defined(ATA_VERBOSE_DEBUG)
@@ -5375,9 +5382,11 @@ #endif
if (ap->flags & ATA_FLAG_SATA)
ap->cbl = ATA_CBL_SATA;
+ ap->link.ap = ap;
+
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- struct ata_device *dev = &ap->device[i];
- dev->ap = ap;
+ struct ata_device *dev = &ap->link.device[i];
+ dev->link = &ap->link;
dev->devno = i;
ata_dev_init(dev);
}
@@ -5538,9 +5547,9 @@ int ata_device_add(const struct ata_prob
/* init sata_spd_limit to the current value */
if (sata_scr_read(ap, SCR_CONTROL, &scontrol) == 0) {
int spd = (scontrol >> 4) & 0xf;
- ap->hw_sata_spd_limit &= (1 << spd) - 1;
+ ap->link.hw_sata_spd_limit &= (1 << spd) - 1;
}
- ap->sata_spd_limit = ap->hw_sata_spd_limit;
+ ap->link.sata_spd_limit = ap->link.hw_sata_spd_limit;
rc = scsi_add_host(ap->host, dev);
if (rc) {
@@ -5553,7 +5562,7 @@ int ata_device_add(const struct ata_prob
}
if (ap->ops->error_handler) {
- struct ata_eh_info *ehi = &ap->eh_info;
+ struct ata_eh_info *ehi = &ap->link.eh_info;
unsigned long flags;
ata_port_probe(ap);
@@ -5644,7 +5653,7 @@ void ata_port_detach(struct ata_port *ap
spin_lock_irqsave(ap->lock, flags);
for (i = 0; i < ATA_MAX_DEVICES; i++)
- ata_dev_disable(&ap->device[i]);
+ ata_dev_disable(&ap->link.device[i]);
spin_unlock_irqrestore(ap->lock, flags);
diff --git a/drivers/scsi/libata-eh.c b/drivers/scsi/libata-eh.c
index 05f0506..80cdfc2 100644
--- a/drivers/scsi/libata-eh.c
+++ b/drivers/scsi/libata-eh.c
@@ -110,7 +110,7 @@ static int ata_ering_map(struct ata_erin
static unsigned int ata_eh_dev_action(struct ata_device *dev)
{
- struct ata_eh_context *ehc = &dev->ap->eh_context;
+ struct ata_eh_context *ehc = &dev->link->eh_context;
return ehc->i.action | ehc->i.dev_action[dev->devno];
}
@@ -176,7 +176,7 @@ enum scsi_eh_timer_return ata_scsi_timed
ret = EH_HANDLED;
spin_lock_irqsave(ap->lock, flags);
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc) {
WARN_ON(qc->scsicmd != cmd);
qc->flags |= ATA_QCFLAG_EH_SCHEDULED;
@@ -283,9 +283,9 @@ void ata_scsi_error(struct Scsi_Host *ho
/* fetch & clear EH info */
spin_lock_irqsave(ap->lock, flags);
- memset(&ap->eh_context, 0, sizeof(ap->eh_context));
- ap->eh_context.i = ap->eh_info;
- memset(&ap->eh_info, 0, sizeof(ap->eh_info));
+ memset(&ap->link.eh_context, 0, sizeof(ap->link.eh_context));
+ ap->link.eh_context.i = ap->link.eh_info;
+ memset(&ap->link.eh_info, 0, sizeof(ap->link.eh_info));
ap->pflags |= ATA_PFLAG_EH_IN_PROGRESS;
ap->pflags &= ~ATA_PFLAG_EH_PENDING;
@@ -320,7 +320,7 @@ void ata_scsi_error(struct Scsi_Host *ho
}
/* this run is complete, make sure EH info is clear */
- memset(&ap->eh_info, 0, sizeof(ap->eh_info));
+ memset(&ap->link.eh_info, 0, sizeof(ap->link.eh_info));
/* Clear host_eh_scheduled while holding ap->lock such
* that if exception occurs after this point but
@@ -331,7 +331,7 @@ void ata_scsi_error(struct Scsi_Host *ho
spin_unlock_irqrestore(ap->lock, flags);
} else {
- WARN_ON(ata_qc_from_tag(ap, ap->active_tag) == NULL);
+ WARN_ON(ata_qc_from_tag(ap, ap->link.active_tag) == NULL);
ap->ops->eng_timeout(ap);
}
@@ -486,7 +486,7 @@ void ata_eng_timeout(struct ata_port *ap
{
DPRINTK("ENTER\n");
- ata_qc_timeout(ata_qc_from_tag(ap, ap->active_tag));
+ ata_qc_timeout(ata_qc_from_tag(ap, ap->link.active_tag));
DPRINTK("EXIT\n");
}
@@ -747,7 +747,7 @@ void ata_eh_qc_retry(struct ata_queued_c
*/
static void ata_eh_detach_dev(struct ata_device *dev)
{
- struct ata_port *ap = dev->ap;
+ struct ata_port *ap = dev->link->ap;
unsigned long flags;
ata_dev_disable(dev);
@@ -762,8 +762,8 @@ static void ata_eh_detach_dev(struct ata
}
/* clear per-dev EH actions */
- ata_eh_clear_action(dev, &ap->eh_info, ATA_EH_PERDEV_MASK);
- ata_eh_clear_action(dev, &ap->eh_context.i, ATA_EH_PERDEV_MASK);
+ ata_eh_clear_action(dev, &dev->link->eh_info, ATA_EH_PERDEV_MASK);
+ ata_eh_clear_action(dev, &dev->link->eh_context.i, ATA_EH_PERDEV_MASK);
spin_unlock_irqrestore(ap->lock, flags);
}
@@ -775,8 +775,8 @@ static void ata_eh_detach_dev(struct ata
* @action: action about to be performed
*
* Called just before performing EH actions to clear related bits
- * in @ap->eh_info such that eh actions are not unnecessarily
- * repeated.
+ * in @ap->link.eh_info such that eh actions are not
+ * unnecessarily repeated.
*
* LOCKING:
* None.
@@ -788,9 +788,9 @@ static void ata_eh_about_to_do(struct at
spin_lock_irqsave(ap->lock, flags);
- ata_eh_clear_action(dev, &ap->eh_info, action);
+ ata_eh_clear_action(dev, &ap->link.eh_info, action);
- if (!(ap->eh_context.i.flags & ATA_EHI_QUIET))
+ if (!(ap->link.eh_context.i.flags & ATA_EHI_QUIET))
ap->pflags |= ATA_PFLAG_RECOVERED;
spin_unlock_irqrestore(ap->lock, flags);
@@ -803,7 +803,7 @@ static void ata_eh_about_to_do(struct at
* @action: action just completed
*
* Called right after performing EH actions to clear related bits
- * in @ap->eh_context.
+ * in @ap->link.eh_context.
*
* LOCKING:
* None.
@@ -811,7 +811,7 @@ static void ata_eh_about_to_do(struct at
static void ata_eh_done(struct ata_port *ap, struct ata_device *dev,
unsigned int action)
{
- ata_eh_clear_action(dev, &ap->eh_context.i, action);
+ ata_eh_clear_action(dev, &ap->link.eh_context.i, action);
}
/**
@@ -905,7 +905,7 @@ static unsigned int ata_read_log_page(st
static int ata_eh_read_log_10h(struct ata_device *dev,
int *tag, struct ata_taskfile *tf)
{
- u8 *buf = dev->ap->sector_buf;
+ u8 *buf = dev->link->ap->sector_buf;
unsigned int err_mask;
u8 csum;
int i;
@@ -958,7 +958,7 @@ static int ata_eh_read_log_10h(struct at
static unsigned int atapi_eh_request_sense(struct ata_device *dev,
unsigned char *sense_buf)
{
- struct ata_port *ap = dev->ap;
+ struct ata_port *ap = dev->link->ap;
struct ata_taskfile tf;
u8 cdb[ATAPI_CDB_LEN];
@@ -1009,7 +1009,7 @@ static unsigned int atapi_eh_request_sen
*/
static void ata_eh_analyze_serror(struct ata_port *ap)
{
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
u32 serror = ehc->i.serror;
unsigned int err_mask = 0, action = 0;
@@ -1051,8 +1051,8 @@ static void ata_eh_analyze_serror(struct
*/
static void ata_eh_analyze_ncq_error(struct ata_port *ap)
{
- struct ata_eh_context *ehc = &ap->eh_context;
- struct ata_device *dev = ap->device;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
+ struct ata_device *dev = ap->link.device;
struct ata_queued_cmd *qc;
struct ata_taskfile tf;
int tag, rc;
@@ -1062,7 +1062,7 @@ static void ata_eh_analyze_ncq_error(str
return;
/* is it NCQ device error? */
- if (!ap->sactive || !(ehc->i.err_mask & AC_ERR_DEV))
+ if (!ap->link.sactive || !(ehc->i.err_mask & AC_ERR_DEV))
return;
/* has LLDD analyzed already? */
@@ -1084,7 +1084,7 @@ static void ata_eh_analyze_ncq_error(str
return;
}
- if (!(ap->sactive & (1 << tag))) {
+ if (!(ap->link.sactive & (1 << tag))) {
ata_port_printk(ap, KERN_ERR, "log page 10h reported "
"inactive tag %d\n", tag);
return;
@@ -1271,7 +1271,7 @@ static int ata_eh_speed_down(struct ata_
return 0;
/* speed down SATA link speed if possible */
- if (sata_down_spd_limit(dev->ap) == 0)
+ if (sata_down_spd_limit(dev->link->ap) == 0)
return ATA_EH_HARDRESET;
/* lower transfer mode */
@@ -1296,7 +1296,7 @@ static int ata_eh_speed_down(struct ata_
*/
static void ata_eh_autopsy(struct ata_port *ap)
{
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
unsigned int action = ehc->i.action;
struct ata_device *failed_dev = NULL;
unsigned int all_err_mask = 0;
@@ -1396,7 +1396,7 @@ static void ata_eh_autopsy(struct ata_po
*/
static void ata_eh_report(struct ata_port *ap)
{
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
const char *frozen, *desc;
int tag, nr_failed = 0;
@@ -1425,15 +1425,15 @@ static void ata_eh_report(struct ata_por
if (ehc->i.dev) {
ata_dev_printk(ehc->i.dev, KERN_ERR, "exception Emask 0x%x "
"SAct 0x%x SErr 0x%x action 0x%x%s\n",
- ehc->i.err_mask, ap->sactive, ehc->i.serror,
- ehc->i.action, frozen);
+ ehc->i.err_mask, ap->link.sactive,
+ ehc->i.serror, ehc->i.action, frozen);
if (desc)
ata_dev_printk(ehc->i.dev, KERN_ERR, "(%s)\n", desc);
} else {
ata_port_printk(ap, KERN_ERR, "exception Emask 0x%x "
"SAct 0x%x SErr 0x%x action 0x%x%s\n",
- ehc->i.err_mask, ap->sactive, ehc->i.serror,
- ehc->i.action, frozen);
+ ehc->i.err_mask, ap->link.sactive,
+ ehc->i.serror, ehc->i.action, frozen);
if (desc)
ata_port_printk(ap, KERN_ERR, "(%s)\n", desc);
}
@@ -1496,7 +1496,7 @@ static int ata_eh_reset(struct ata_port
ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
ata_reset_fn_t hardreset, ata_postreset_fn_t postreset)
{
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
unsigned int *classes = ehc->classes;
int tries = ATA_EH_RESET_TRIES;
int verbose = !(ehc->i.flags & ATA_EHI_QUIET);
@@ -1610,7 +1610,7 @@ static int ata_eh_reset(struct ata_port
* controller state is undefined. Record the mode.
*/
for (i = 0; i < ATA_MAX_DEVICES; i++)
- ap->device[i].pio_mode = XFER_PIO_0;
+ ap->link.device[i].pio_mode = XFER_PIO_0;
if (postreset)
postreset(ap, classes);
@@ -1626,7 +1626,7 @@ static int ata_eh_reset(struct ata_port
static int ata_eh_revalidate_and_attach(struct ata_port *ap,
struct ata_device **r_failed_dev)
{
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
struct ata_device *dev;
unsigned long flags;
int i, rc = 0;
@@ -1636,7 +1636,7 @@ static int ata_eh_revalidate_and_attach(
for (i = 0; i < ATA_MAX_DEVICES; i++) {
unsigned int action;
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
action = ata_eh_dev_action(dev);
if (action & ATA_EH_REVALIDATE && ata_dev_ready(dev)) {
@@ -1709,7 +1709,7 @@ static int ata_eh_suspend(struct ata_por
unsigned long flags;
unsigned int action, err_mask;
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
action = ata_eh_dev_action(dev);
if (!ata_dev_enabled(dev) || !(action & ATA_EH_SUSPEND))
@@ -1772,7 +1772,7 @@ static void ata_eh_prep_resume(struct at
for (i = 0; i < ATA_MAX_DEVICES; i++) {
unsigned int action;
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
action = ata_eh_dev_action(dev);
if (!ata_dev_enabled(dev) || !(action & ATA_EH_RESUME))
@@ -1810,7 +1810,7 @@ static int ata_eh_resume(struct ata_port
for (i = 0; i < ATA_MAX_DEVICES; i++) {
unsigned int action, err_mask;
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
action = ata_eh_dev_action(dev);
if (!ata_dev_enabled(dev) || !(action & ATA_EH_RESUME))
@@ -1845,7 +1845,7 @@ static int ata_port_nr_enabled(struct at
int i, cnt = 0;
for (i = 0; i < ATA_MAX_DEVICES; i++)
- if (ata_dev_enabled(&ap->device[i]))
+ if (ata_dev_enabled(&ap->link.device[i]))
cnt++;
return cnt;
}
@@ -1855,19 +1855,19 @@ static int ata_port_nr_vacant(struct ata
int i, cnt = 0;
for (i = 0; i < ATA_MAX_DEVICES; i++)
- if (ap->device[i].class == ATA_DEV_UNKNOWN)
+ if (ap->link.device[i].class == ATA_DEV_UNKNOWN)
cnt++;
return cnt;
}
static int ata_eh_skip_recovery(struct ata_port *ap)
{
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
int i;
/* skip if all possible devices are suspended */
for (i = 0; i < ata_port_max_devices(ap); i++) {
- struct ata_device *dev = &ap->device[i];
+ struct ata_device *dev = &ap->link.device[i];
if (ata_dev_absent(dev) || ata_dev_ready(dev))
break;
@@ -1882,7 +1882,7 @@ static int ata_eh_skip_recovery(struct a
/* skip if class codes for all vacant slots are ATA_DEV_NONE */
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- struct ata_device *dev = &ap->device[i];
+ struct ata_device *dev = &ap->link.device[i];
if (dev->class == ATA_DEV_UNKNOWN &&
ehc->classes[dev->devno] != ATA_DEV_NONE)
@@ -1895,8 +1895,8 @@ static int ata_eh_skip_recovery(struct a
static void ata_eh_handle_dev_fail(struct ata_device *dev, int err,
int down_xfermask)
{
- struct ata_port *ap = dev->ap;
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_port *ap = dev->link->ap;
+ struct ata_eh_context *ehc = &dev->link->eh_context;
switch (err) {
case -ENODEV:
@@ -1966,7 +1966,7 @@ static int ata_eh_recover(struct ata_por
ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
ata_postreset_fn_t postreset)
{
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
struct ata_device *dev;
int down_xfermask, i, rc;
@@ -1974,7 +1974,7 @@ static int ata_eh_recover(struct ata_por
/* prep for recovery */
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
ehc->tries[dev->devno] = ATA_EH_DEV_TRIES;
@@ -2071,7 +2071,7 @@ static int ata_eh_recover(struct ata_por
ata_hp_poll_activate(ap);
for (i = 0; i < ATA_MAX_DEVICES; i++)
- ata_dev_disable(&ap->device[i]);
+ ata_dev_disable(&ap->link.device[i]);
}
DPRINTK("EXIT, rc=%d\n", rc);
@@ -2236,7 +2236,7 @@ static void ata_eh_handle_port_resume(st
timeout = jiffies + HZ; /* 1s max */
while (1) {
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- struct ata_device *dev = &ap->device[i];
+ struct ata_device *dev = &ap->link.device[i];
unsigned int action = ata_eh_dev_action(dev);
if ((dev->flags & ATA_DFLAG_SUSPENDED) &&
@@ -2286,7 +2286,7 @@ static void ata_hp_poll_worker(void *dat
rc = ap->ops->hp_poll(ap);
if (rc) {
if (rc > 0) {
- ata_ehi_hotplugged(&ap->eh_info);
+ ata_ehi_hotplugged(&ap->link.eh_info);
ata_port_freeze(ap);
}
list_del_init(&ap->hp_poll_entry);
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index 7ced41e..c947da7 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -440,8 +440,8 @@ int ata_scsi_device_suspend(struct scsi_
action = ATA_EH_SUSPEND;
if (state.event != PM_EVENT_SUSPEND)
action |= ATA_EH_PM_FREEZE;
- ap->eh_info.dev_action[dev->devno] |= action;
- ap->eh_info.flags |= ATA_EHI_QUIET;
+ dev->link->eh_info.dev_action[dev->devno] |= action;
+ dev->link->eh_info.flags |= ATA_EHI_QUIET;
ata_port_schedule_eh(ap);
spin_unlock_irqrestore(ap->lock, flags);
@@ -485,7 +485,7 @@ int ata_scsi_device_resume(struct scsi_d
{
struct ata_port *ap = ata_shost_to_port(sdev->host);
struct ata_device *dev = ata_scsi_find_dev(ap, sdev);
- struct ata_eh_info *ehi = &ap->eh_info;
+ struct ata_eh_info *ehi;
unsigned long flags;
unsigned int action;
@@ -500,6 +500,7 @@ int ata_scsi_device_resume(struct scsi_d
goto out_unlock;
/* request resume */
+ ehi = &dev->link->eh_info;
action = ATA_EH_RESUME;
if (sdev->sdev_gendev.power.power_state.event == PM_EVENT_SUSPEND)
__ata_ehi_hotplugged(ehi);
@@ -1420,7 +1421,7 @@ static void ata_scsi_qc_complete(struct
if (!need_sense && (qc->tf.command == ATA_CMD_SET_FEATURES) &&
((qc->tf.feature == SETFEATURES_WC_ON) ||
(qc->tf.feature == SETFEATURES_WC_OFF))) {
- qc->ap->eh_info.action |= ATA_EH_REVALIDATE;
+ qc->dev->link->eh_info.action |= ATA_EH_REVALIDATE;
ata_port_schedule_eh(qc->ap);
}
@@ -1474,16 +1475,16 @@ static void ata_scsi_qc_complete(struct
*/
static int ata_scmd_need_defer(struct ata_device *dev, int is_io)
{
- struct ata_port *ap = dev->ap;
+ struct ata_link *link = dev->link;
if (!(dev->flags & ATA_DFLAG_NCQ))
return 0;
if (is_io) {
- if (!ata_tag_valid(ap->active_tag))
+ if (!ata_tag_valid(link->active_tag))
return 0;
} else {
- if (!ata_tag_valid(ap->active_tag) && !ap->sactive)
+ if (!ata_tag_valid(link->active_tag) && !link->sactive)
return 0;
}
return 1;
@@ -2466,7 +2467,7 @@ static unsigned int atapi_xlat(struct at
static struct ata_device * ata_find_dev(struct ata_port *ap, int id)
{
if (likely(id < ATA_MAX_DEVICES))
- return &ap->device[id];
+ return &ap->link.device[id];
return NULL;
}
@@ -2498,7 +2499,7 @@ static int ata_scsi_dev_enabled(struct a
if (unlikely(!ata_dev_enabled(dev)))
return 0;
- if (!atapi_enabled || (dev->ap->flags & ATA_FLAG_NO_ATAPI)) {
+ if (!atapi_enabled || (dev->link->ap->flags & ATA_FLAG_NO_ATAPI)) {
if (unlikely(dev->class == ATA_DEV_ATAPI)) {
ata_dev_printk(dev, KERN_WARNING,
"WARNING: ATAPI is %s, device ignored.\n",
@@ -2925,7 +2926,7 @@ void ata_scsi_scan_host(struct ata_port
return;
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- struct ata_device *dev = &ap->device[i];
+ struct ata_device *dev = &ap->link.device[i];
struct scsi_device *sdev;
if (!ata_dev_enabled(dev) || dev->sdev)
@@ -2975,7 +2976,7 @@ int ata_scsi_offline_dev(struct ata_devi
*/
static void ata_scsi_remove_dev(struct ata_device *dev)
{
- struct ata_port *ap = dev->ap;
+ struct ata_port *ap = dev->link->ap;
struct scsi_device *sdev;
unsigned long flags;
@@ -3048,7 +3049,7 @@ void ata_scsi_hotplug(void *data)
/* unplug detached devices */
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- struct ata_device *dev = &ap->device[i];
+ struct ata_device *dev = &ap->link.device[i];
unsigned long flags;
if (!(dev->flags & ATA_DFLAG_DETACHED))
@@ -3069,7 +3070,7 @@ void ata_scsi_hotplug(void *data)
* unattached devices.
*/
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- struct ata_device *dev = &ap->device[i];
+ struct ata_device *dev = &ap->link.device[i];
if (ata_dev_enabled(dev) && !dev->sdev) {
queue_delayed_work(ata_aux_wq, &ap->hotplug_task, HZ);
break;
@@ -3099,6 +3100,7 @@ static int ata_scsi_user_scan(struct Scs
unsigned int id, unsigned int lun)
{
struct ata_port *ap = ata_shost_to_port(shost);
+ struct ata_eh_info *ehi = &ap->link.eh_info;
unsigned long flags;
int rc = 0;
@@ -3112,15 +3114,15 @@ static int ata_scsi_user_scan(struct Scs
spin_lock_irqsave(ap->lock, flags);
if (id == SCAN_WILD_CARD) {
- ap->eh_info.probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
- ap->eh_info.action |= ATA_EH_SOFTRESET;
+ ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
+ ehi->action |= ATA_EH_SOFTRESET;
} else {
struct ata_device *dev = ata_find_dev(ap, id);
if (dev) {
- ap->eh_info.probe_mask |= 1 << dev->devno;
- ap->eh_info.action |= ATA_EH_SOFTRESET;
- ap->eh_info.flags |= ATA_EHI_RESUME_LINK;
+ ehi->probe_mask |= 1 << dev->devno;
+ ehi->action |= ATA_EH_SOFTRESET;
+ ehi->flags |= ATA_EHI_RESUME_LINK;
} else
rc = -EINVAL;
}
@@ -3152,7 +3154,7 @@ void ata_scsi_dev_rescan(void *data)
unsigned int i;
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
if (ata_dev_enabled(dev) && dev->sdev)
scsi_rescan_device(&(dev->sdev->sdev_gendev));
diff --git a/drivers/scsi/pdc_adma.c b/drivers/scsi/pdc_adma.c
index d1f38c3..c5fa35f 100644
--- a/drivers/scsi/pdc_adma.c
+++ b/drivers/scsi/pdc_adma.c
@@ -462,7 +462,7 @@ static inline unsigned int adma_intr_pkt
pp = ap->private_data;
if (!pp || pp->state != adma_state_pkt)
continue;
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
if ((status & (aPERR | aPSD | aUIRQ)))
qc->err_mask |= AC_ERR_OTHER;
@@ -487,7 +487,7 @@ static inline unsigned int adma_intr_mmi
struct adma_port_priv *pp = ap->private_data;
if (!pp || pp->state != adma_state_mmio)
continue;
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
/* check main status, clearing INTRQ */
diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c
index 1053c7c..8c4d9be 100644
--- a/drivers/scsi/sata_mv.c
+++ b/drivers/scsi/sata_mv.c
@@ -1417,7 +1417,7 @@ static void mv_host_intr(struct ata_host
}
if (handled) {
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && (qc->flags & ATA_QCFLAG_ACTIVE)) {
VPRINTK("port %u IRQ found for qc, "
"ata_status 0x%x\n", port,ata_status);
@@ -1939,7 +1939,7 @@ static void __mv_phy_reset(struct ata_po
struct mv_host_priv *hpriv = ap->host_set->private_data;
void __iomem *port_mmio = mv_ap_base(ap);
struct ata_taskfile tf;
- struct ata_device *dev = &ap->device[0];
+ struct ata_device *dev = &ap->link.device[0];
unsigned long timeout;
int retry = 5;
u32 sstatus;
@@ -2047,7 +2047,7 @@ static void mv_eng_timeout(struct ata_po
mv_dump_all_regs(ap->host_set->mmio_base, ap->port_no,
to_pci_dev(ap->host_set->dev));
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
printk(KERN_ERR "mmio_base %p ap %p qc %p scsi_cmnd %p &cmnd %p\n",
ap->host_set->mmio_base, ap, qc, qc->scsicmd,
&qc->scsicmd->cmnd);
diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c
index 7bd9305..6659faa 100644
--- a/drivers/scsi/sata_nv.c
+++ b/drivers/scsi/sata_nv.c
@@ -314,7 +314,7 @@ static irqreturn_t nv_generic_interrupt(
!(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
handled += ata_host_intr(ap, qc);
else
@@ -332,7 +332,7 @@ static irqreturn_t nv_generic_interrupt(
static int nv_host_intr(struct ata_port *ap, u8 irq_stat)
{
- struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag);
+ struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
int handled;
/* freeze if hotplugged */
diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c
index 64631bd..74ec4cd 100644
--- a/drivers/scsi/sata_promise.c
+++ b/drivers/scsi/sata_promise.c
@@ -445,7 +445,7 @@ static void pdc_eng_timeout(struct ata_p
spin_lock_irqsave(&host_set->lock, flags);
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
switch (qc->tf.protocol) {
case ATA_PROT_DMA:
@@ -552,7 +552,7 @@ static irqreturn_t pdc_interrupt (int ir
!(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
handled += pdc_host_intr(ap, qc);
}
diff --git a/drivers/scsi/sata_qstor.c b/drivers/scsi/sata_qstor.c
index d374c1d..e047890 100644
--- a/drivers/scsi/sata_qstor.c
+++ b/drivers/scsi/sata_qstor.c
@@ -401,7 +401,7 @@ static inline unsigned int qs_intr_pkt(s
struct qs_port_priv *pp = ap->private_data;
if (!pp || pp->state != qs_state_pkt)
continue;
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
switch (sHST) {
case 0: /* successful CPB */
@@ -434,7 +434,7 @@ static inline unsigned int qs_intr_mmio(
struct qs_port_priv *pp = ap->private_data;
if (!pp || pp->state != qs_state_mmio)
continue;
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING))) {
/* check main status, clearing INTRQ */
diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c
index 62deca4..baad7c4 100644
--- a/drivers/scsi/sata_sil.c
+++ b/drivers/scsi/sata_sil.c
@@ -305,7 +305,7 @@ static void sil_post_set_mode (struct at
unsigned int i;
for (i = 0; i < 2; i++) {
- dev = &ap->device[i];
+ dev = &ap->link.device[i];
if (!ata_dev_enabled(dev))
dev_mode[i] = 0; /* PIO0/1/2 */
else if (dev->flags & ATA_DFLAG_PIO)
@@ -359,7 +359,7 @@ static void sil_scr_write (struct ata_po
static void sil_host_intr(struct ata_port *ap, u32 bmdma2)
{
- struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag);
+ struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
u8 status;
if (unlikely(bmdma2 & SIL_DMA_SATA_IRQ)) {
@@ -378,8 +378,8 @@ static void sil_host_intr(struct ata_por
* repeat probing needlessly.
*/
if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
- ata_ehi_hotplugged(&ap->eh_info);
- ap->eh_info.serror |= serror;
+ ata_ehi_hotplugged(&ap->link.eh_info);
+ ap->link.eh_info.serror |= serror;
}
goto freeze;
diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index f57afa5..298c1d8 100644
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -759,7 +759,7 @@ static void sil24_thaw(struct ata_port *
static void sil24_error_intr(struct ata_port *ap)
{
void __iomem *port = (void __iomem *)ap->ioaddr.cmd_addr;
- struct ata_eh_info *ehi = &ap->eh_info;
+ struct ata_eh_info *ehi = &ap->link.eh_info;
int freeze = 0;
u32 irq_stat;
@@ -811,7 +811,7 @@ static void sil24_error_intr(struct ata_
}
/* record error info */
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc) {
sil24_update_tf(ap);
qc->err_mask |= err_mask;
@@ -855,7 +855,7 @@ static inline void sil24_host_intr(struc
if (rc > 0)
return;
if (rc < 0) {
- struct ata_eh_info *ehi = &ap->eh_info;
+ struct ata_eh_info *ehi = &ap->link.eh_info;
ehi->err_mask |= AC_ERR_HSM;
ehi->action |= ATA_EH_SOFTRESET;
ata_port_freeze(ap);
@@ -865,7 +865,7 @@ static inline void sil24_host_intr(struc
if (ata_ratelimit())
ata_port_printk(ap, KERN_INFO, "spurious interrupt "
"(slot_stat 0x%x active_tag %d sactive 0x%x)\n",
- slot_stat, ap->active_tag, ap->sactive);
+ slot_stat, ap->link.active_tag, ap->link.sactive);
}
static irqreturn_t sil24_interrupt(int irq, void *dev_instance, struct pt_regs *regs)
@@ -907,7 +907,7 @@ static irqreturn_t sil24_interrupt(int i
static void sil24_error_handler(struct ata_port *ap)
{
- struct ata_eh_context *ehc = &ap->eh_context;
+ struct ata_eh_context *ehc = &ap->link.eh_context;
if (sil24_init_port(ap)) {
ata_eh_freeze_port(ap);
diff --git a/drivers/scsi/sata_sx4.c b/drivers/scsi/sata_sx4.c
index ccc8cad..bf1178c 100644
--- a/drivers/scsi/sata_sx4.c
+++ b/drivers/scsi/sata_sx4.c
@@ -838,7 +838,7 @@ static irqreturn_t pdc20621_interrupt (i
!(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
handled += pdc20621_host_intr(ap, qc, (i > 4),
mmio_base);
@@ -865,7 +865,7 @@ static void pdc_eng_timeout(struct ata_p
spin_lock_irqsave(&host_set->lock, flags);
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
switch (qc->tf.protocol) {
case ATA_PROT_DMA:
diff --git a/drivers/scsi/sata_vsc.c b/drivers/scsi/sata_vsc.c
index d7da4c2..52290e9 100644
--- a/drivers/scsi/sata_vsc.c
+++ b/drivers/scsi/sata_vsc.c
@@ -232,7 +232,7 @@ static irqreturn_t vsc_sata_interrupt (i
if (ap && !(ap->flags & ATA_FLAG_DISABLED)) {
struct ata_queued_cmd *qc;
- qc = ata_qc_from_tag(ap, ap->active_tag);
+ qc = ata_qc_from_tag(ap, ap->link.active_tag);
if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
handled += ata_host_intr(ap, qc);
else if (is_vsc_sata_int_err(i, int_status)) {
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 1609309..0395e2f 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -437,7 +437,7 @@ struct ata_ering {
};
struct ata_device {
- struct ata_port *ap;
+ struct ata_link *link;
unsigned int devno; /* 0 or 1 */
unsigned long flags; /* ATA_DFLAG_xxx */
struct scsi_device *sdev; /* attached SCSI device */
@@ -496,6 +496,23 @@ struct ata_eh_context {
unsigned int did_probe_mask;
};
+struct ata_link {
+ struct ata_port *ap;
+
+ unsigned int active_tag; /* active tag on this link */
+ u32 sactive; /* active NCQ commands */
+
+ unsigned int hw_sata_spd_limit;
+ unsigned int sata_spd_limit;
+
+ /* record runtime error info, protected by host_set lock */
+ struct ata_eh_info eh_info;
+ /* EH context */
+ struct ata_eh_context eh_context;
+
+ struct ata_device device[1];
+};
+
struct ata_port {
struct Scsi_Host *host; /* our co-allocated scsi host */
const struct ata_port_operations *ops;
@@ -520,22 +537,13 @@ struct ata_port {
unsigned int mwdma_mask;
unsigned int udma_mask;
unsigned int cbl; /* cable type; ATA_CBL_xxx */
- unsigned int hw_sata_spd_limit;
- unsigned int sata_spd_limit; /* SATA PHY speed limit */
-
- /* record runtime error info, protected by host_set lock */
- struct ata_eh_info eh_info;
- /* EH context owned by EH */
- struct ata_eh_context eh_context;
-
- struct ata_device device[ATA_MAX_DEVICES];
struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
unsigned long qc_allocated;
unsigned int qc_active;
- unsigned int active_tag;
- u32 sactive;
+ struct ata_link link; /* host default link */
+ struct ata_device __dev1; /* storage for link.device[1] */
struct ata_host_stats stats;
struct ata_host_set *host_set;
@@ -851,8 +859,11 @@ extern void ata_do_eh(struct ata_port *a
#define ata_port_printk(ap, lv, fmt, args...) \
printk(lv"ata%u: "fmt, (ap)->id , ##args)
+#define ata_link_printk(link, lv, fmt, args...) \
+ printk(lv"ata%u: "fmt, (link)->ap->id , ##args)
+
#define ata_dev_printk(dev, lv, fmt, args...) \
- printk(lv"ata%u.%02u: "fmt, (dev)->ap->id, (dev)->devno , ##args)
+ printk(lv"ata%u.%02u: "fmt, (dev)->link->ap->id, (dev)->devno , ##args)
/*
* ata_eh_info helpers
@@ -1090,7 +1101,7 @@ static inline void ata_tf_init(struct at
{
memset(tf, 0, sizeof(*tf));
- tf->ctl = dev->ap->ctl;
+ tf->ctl = dev->link->ap->ctl;
if (dev->devno == 0)
tf->device = ATA_DEVICE_OBS;
else
--
1.3.2
-
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