Make the following PHY-related functions to deal with ata_link instead
of ata_port.
* sata_print_link_status()
* sata_down_spd_limit()
* ata_set_sata_spd_limit() and friends
* sata_link_debounce/resume()
* sata_scr_valid/read/write/write_flush()
* ata_link_on/offline()
This patch introduces no behavior change.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
---
drivers/ata/ahci.c | 6 +
drivers/ata/libata-core.c | 231 ++++++++++++++++++++++++---------------------
drivers/ata/libata-eh.c | 24 +++--
drivers/ata/libata-sff.c | 2
drivers/ata/libata.h | 4 -
drivers/ata/sata_mv.c | 14 +--
drivers/ata/sata_sil24.c | 10 +-
include/linux/libata.h | 19 ++--
8 files changed, 166 insertions(+), 144 deletions(-)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 1494c04..2888144 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -747,7 +747,7 @@ static int ahci_softreset(struct ata_por
DPRINTK("ENTER\n");
- if (ata_port_offline(ap)) {
+ if (ata_link_offline(&ap->link)) {
DPRINTK("PHY reports no device\n");
*class = ATA_DEV_NONE;
return 0;
@@ -820,7 +820,7 @@ static int ahci_softreset(struct ata_por
msleep(150);
*class = ATA_DEV_NONE;
- if (ata_port_online(ap)) {
+ if (ata_link_online(&ap->link)) {
if (ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT)) {
rc = -EIO;
reason = "device not ready";
@@ -861,7 +861,7 @@ static int ahci_hardreset(struct ata_por
ahci_start_engine(port_mmio);
- if (rc == 0 && ata_port_online(ap))
+ if (rc == 0 && ata_link_online(&ap->link))
*class = ahci_dev_classify(ap);
if (*class == ATA_DEV_UNKNOWN)
*class = ATA_DEV_NONE;
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 580317c..4f75d41 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1661,7 +1661,7 @@ int ata_bus_probe(struct ata_port *ap)
tries[dev->devno] = 0;
break;
case -EIO:
- sata_down_spd_limit(ap);
+ sata_down_spd_limit(&ap->link);
/* fall through */
default:
tries[dev->devno]--;
@@ -1696,28 +1696,28 @@ void ata_port_probe(struct ata_port *ap)
/**
* sata_print_link_status - Print SATA link status
- * @ap: SATA port to printk link status about
+ * @link: SATA link to printk link status about
*
* This function prints link speed and status of a SATA link.
*
* LOCKING:
* None.
*/
-static void sata_print_link_status(struct ata_port *ap)
+static void sata_print_link_status(struct ata_link *link)
{
u32 sstatus, scontrol, tmp;
- if (sata_scr_read(ap, SCR_STATUS, &sstatus))
+ if (sata_scr_read(link, SCR_STATUS, &sstatus))
return;
- sata_scr_read(ap, SCR_CONTROL, &scontrol);
+ sata_scr_read(link, SCR_CONTROL, &scontrol);
- if (ata_port_online(ap)) {
+ if (ata_link_online(link)) {
tmp = (sstatus >> 4) & 0xf;
- ata_port_printk(ap, KERN_INFO,
+ ata_link_printk(link, KERN_INFO,
"SATA link up %s (SStatus %X SControl %X)\n",
sata_spd_string(tmp), sstatus, scontrol);
} else {
- ata_port_printk(ap, KERN_INFO,
+ ata_link_printk(link, KERN_INFO,
"SATA link down (SStatus %X SControl %X)\n",
sstatus, scontrol);
}
@@ -1737,32 +1737,33 @@ static void sata_print_link_status(struc
*/
void __sata_phy_reset(struct ata_port *ap)
{
- u32 sstatus;
+ struct ata_link *link = &ap->link;
unsigned long timeout = jiffies + (HZ * 5);
+ u32 sstatus;
if (ap->flags & ATA_FLAG_SATA_RESET) {
/* issue phy wake/reset */
- sata_scr_write_flush(ap, SCR_CONTROL, 0x301);
+ sata_scr_write_flush(link, SCR_CONTROL, 0x301);
/* Couldn't find anything in SATA I/II specs, but
* AHCI-1.1 10.4.2 says at least 1 ms. */
mdelay(1);
}
/* phy wake/clear reset */
- sata_scr_write_flush(ap, SCR_CONTROL, 0x300);
+ sata_scr_write_flush(link, SCR_CONTROL, 0x300);
/* wait for phy to become ready, if necessary */
do {
msleep(200);
- sata_scr_read(ap, SCR_STATUS, &sstatus);
+ sata_scr_read(link, SCR_STATUS, &sstatus);
if ((sstatus & 0xf) != 1)
break;
} while (time_before(jiffies, timeout));
/* print link status */
- sata_print_link_status(ap);
+ sata_print_link_status(link);
/* TODO: phy layer with polling, timeouts, etc. */
- if (!ata_port_offline(ap))
+ if (!ata_link_offline(link))
ata_port_probe(ap);
else
ata_port_disable(ap);
@@ -1836,9 +1837,9 @@ void ata_port_disable(struct ata_port *a
/**
* sata_down_spd_limit - adjust SATA spd limit downward
- * @ap: Port to adjust SATA spd limit for
+ * @link: Link to adjust SATA spd limit for
*
- * Adjust SATA spd limit of @ap downward. Note that this
+ * Adjust SATA spd limit of @link downward. Note that this
* function only adjusts the limit. The change must be applied
* using sata_set_spd().
*
@@ -1848,16 +1849,16 @@ void ata_port_disable(struct ata_port *a
* RETURNS:
* 0 on success, negative errno on failure
*/
-int sata_down_spd_limit(struct ata_port *ap)
+int sata_down_spd_limit(struct ata_link *link)
{
u32 sstatus, spd, mask;
int rc, highbit;
- rc = sata_scr_read(ap, SCR_STATUS, &sstatus);
+ rc = sata_scr_read(link, SCR_STATUS, &sstatus);
if (rc)
return rc;
- mask = ap->link.sata_spd_limit;
+ mask = link->sata_spd_limit;
if (mask <= 1)
return -EINVAL;
highbit = fls(mask) - 1;
@@ -1871,22 +1872,22 @@ int sata_down_spd_limit(struct ata_port
if (!mask)
return -EINVAL;
- ap->link.sata_spd_limit = mask;
+ link->sata_spd_limit = mask;
- ata_port_printk(ap, KERN_WARNING, "limiting SATA link speed to %s\n",
+ ata_link_printk(link, KERN_WARNING, "limiting SATA link speed to %s\n",
sata_spd_string(fls(mask)));
return 0;
}
-static int __sata_set_spd_needed(struct ata_port *ap, u32 *scontrol)
+static int __sata_set_spd_needed(struct ata_link *link, u32 *scontrol)
{
u32 spd, limit;
- if (ap->link.sata_spd_limit == UINT_MAX)
+ if (link->sata_spd_limit == UINT_MAX)
limit = 0;
else
- limit = fls(ap->link.sata_spd_limit);
+ limit = fls(link->sata_spd_limit);
spd = (*scontrol >> 4) & 0xf;
*scontrol = (*scontrol & ~0xf0) | ((limit & 0xf) << 4);
@@ -1896,10 +1897,10 @@ static int __sata_set_spd_needed(struct
/**
* sata_set_spd_needed - is SATA spd configuration needed
- * @ap: Port in question
+ * @link: Link in question
*
* Test whether the spd limit in SControl matches
- * @ap->link.sata_spd_limit. This function is used to determine
+ * @link->sata_spd_limit. This function is used to determine
* whether hardreset is necessary to apply SATA spd
* configuration.
*
@@ -1909,21 +1910,21 @@ static int __sata_set_spd_needed(struct
* RETURNS:
* 1 if SATA spd configuration is needed, 0 otherwise.
*/
-int sata_set_spd_needed(struct ata_port *ap)
+int sata_set_spd_needed(struct ata_link *link)
{
u32 scontrol;
- if (sata_scr_read(ap, SCR_CONTROL, &scontrol))
+ if (sata_scr_read(link, SCR_CONTROL, &scontrol))
return 0;
- return __sata_set_spd_needed(ap, &scontrol);
+ return __sata_set_spd_needed(link, &scontrol);
}
/**
* sata_set_spd - set SATA spd according to spd limit
- * @ap: Port to set SATA spd for
+ * @link: Link to set SATA spd for
*
- * Set SATA spd of @ap according to sata_spd_limit.
+ * Set SATA spd of @link according to sata_spd_limit.
*
* LOCKING:
* Inherited from caller.
@@ -1932,18 +1933,18 @@ int sata_set_spd_needed(struct ata_port
* 0 if spd doesn't need to be changed, 1 if spd has been
* changed. Negative errno if SCR registers are inaccessible.
*/
-int sata_set_spd(struct ata_port *ap)
+int sata_set_spd(struct ata_link *link)
{
u32 scontrol;
int rc;
- if ((rc = sata_scr_read(ap, SCR_CONTROL, &scontrol)))
+ if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
return rc;
- if (!__sata_set_spd_needed(ap, &scontrol))
+ if (!__sata_set_spd_needed(link, &scontrol))
return 0;
- if ((rc = sata_scr_write(ap, SCR_CONTROL, scontrol)))
+ if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol)))
return rc;
return 1;
@@ -2543,11 +2544,11 @@ err_out:
}
/**
- * sata_phy_debounce - debounce SATA phy status
- * @ap: ATA port to debounce SATA phy status for
+ * sata_link_debounce - debounce SATA phy status
+ * @link: ATA link to debounce SATA phy status for
* @params: timing parameters { interval, duratinon, timeout } in msec
*
- * Make sure SStatus of @ap reaches stable state, determined by
+ * Make sure SStatus of @link reaches stable state, determined by
* holding the same value where DET is not 1 for @duration polled
* every @interval, before @timeout. Timeout constraints the
* beginning of the stable state. Because, after hot unplugging,
@@ -2560,7 +2561,7 @@ err_out:
* RETURNS:
* 0 on success, -errno on failure.
*/
-int sata_phy_debounce(struct ata_port *ap, const unsigned long *params)
+int sata_link_debounce(struct ata_link *link, const unsigned long *params)
{
unsigned long interval_msec = params[0];
unsigned long duration = params[1] * HZ / 1000;
@@ -2569,7 +2570,7 @@ int sata_phy_debounce(struct ata_port *a
u32 last, cur;
int rc;
- if ((rc = sata_scr_read(ap, SCR_STATUS, &cur)))
+ if ((rc = sata_scr_read(link, SCR_STATUS, &cur)))
return rc;
cur &= 0xf;
@@ -2578,7 +2579,7 @@ int sata_phy_debounce(struct ata_port *a
while (1) {
msleep(interval_msec);
- if ((rc = sata_scr_read(ap, SCR_STATUS, &cur)))
+ if ((rc = sata_scr_read(link, SCR_STATUS, &cur)))
return rc;
cur &= 0xf;
@@ -2602,11 +2603,11 @@ int sata_phy_debounce(struct ata_port *a
}
/**
- * sata_phy_resume - resume SATA phy
- * @ap: ATA port to resume SATA phy for
+ * sata_link_resume - resume SATA link
+ * @link: ATA link to resume SATA
* @params: timing parameters { interval, duratinon, timeout } in msec
*
- * Resume SATA phy of @ap and debounce it.
+ * Resume SATA phy @link and debounce it.
*
* LOCKING:
* Kernel thread context (may sleep)
@@ -2614,17 +2615,17 @@ int sata_phy_debounce(struct ata_port *a
* RETURNS:
* 0 on success, -errno on failure.
*/
-int sata_phy_resume(struct ata_port *ap, const unsigned long *params)
+int sata_link_resume(struct ata_link *link, const unsigned long *params)
{
u32 scontrol;
int rc;
- if ((rc = sata_scr_read(ap, SCR_CONTROL, &scontrol)))
+ if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
return rc;
scontrol = (scontrol & 0x0f0) | 0x300;
- if ((rc = sata_scr_write(ap, SCR_CONTROL, scontrol)))
+ if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol)))
return rc;
/* Some PHYs react badly if SStatus is pounded immediately
@@ -2632,7 +2633,7 @@ int sata_phy_resume(struct ata_port *ap,
*/
msleep(200);
- return sata_phy_debounce(ap, params);
+ return sata_link_debounce(link, params);
}
static void ata_wait_spinup(struct ata_port *ap)
@@ -2643,10 +2644,11 @@ static void ata_wait_spinup(struct ata_p
/* first, debounce phy if SATA */
if (ap->cbl == ATA_CBL_SATA) {
- rc = sata_phy_debounce(ap, sata_deb_timing_hotplug);
+ rc = sata_link_debounce(&ap->link, sata_deb_timing_hotplug);
/* if debounced successfully and offline, no need to wait */
- if ((rc == 0 || rc == -EOPNOTSUPP) && ata_port_offline(ap))
+ if ((rc == 0 || rc == -EOPNOTSUPP) &&
+ ata_link_offline(&ap->link))
return;
}
@@ -2678,7 +2680,8 @@ static void ata_wait_spinup(struct ata_p
*/
int ata_std_prereset(struct ata_port *ap)
{
- struct ata_eh_context *ehc = &ap->link.eh_context;
+ struct ata_link *link = &ap->link;
+ struct ata_eh_context *ehc = &link->eh_context;
const unsigned long *timing = sata_ehc_deb_timing(ehc);
int rc;
@@ -2695,9 +2698,9 @@ int ata_std_prereset(struct ata_port *ap
if (ehc->i.action & ATA_EH_HARDRESET)
return 0;
- /* if SATA, resume phy */
+ /* if SATA, resume link */
if (ap->cbl == ATA_CBL_SATA) {
- rc = sata_phy_resume(ap, timing);
+ rc = sata_link_resume(link, timing);
if (rc && rc != -EOPNOTSUPP) {
/* phy resume failed */
ata_port_printk(ap, KERN_WARNING, "failed to resume "
@@ -2709,7 +2712,7 @@ int ata_std_prereset(struct ata_port *ap
/* Wait for !BSY if the controller can wait for the first D2H
* Reg FIS and we don't know that no device is attached.
*/
- if (!(ap->flags & ATA_FLAG_SKIP_D2H_BSY) && !ata_port_offline(ap))
+ if (!(ap->flags & ATA_FLAG_SKIP_D2H_BSY) && !ata_link_offline(link))
ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT);
return 0;
@@ -2730,13 +2733,14 @@ int ata_std_prereset(struct ata_port *ap
*/
int ata_std_softreset(struct ata_port *ap, unsigned int *classes)
{
+ struct ata_link *link = &ap->link;
unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS;
unsigned int devmask = 0, err_mask;
u8 err;
DPRINTK("ENTER\n");
- if (ata_port_offline(ap)) {
+ if (ata_link_offline(link)) {
classes[0] = ATA_DEV_NONE;
goto out;
}
@@ -2784,35 +2788,36 @@ int ata_std_softreset(struct ata_port *a
*/
int sata_port_hardreset(struct ata_port *ap, const unsigned long *timing)
{
+ struct ata_link *link = &ap->link;
u32 scontrol;
int rc;
DPRINTK("ENTER\n");
- if (sata_set_spd_needed(ap)) {
+ if (sata_set_spd_needed(link)) {
/* SATA spec says nothing about how to reconfigure
* spd. To be on the safe side, turn off phy during
* reconfiguration. This works for at least ICH7 AHCI
* and Sil3124.
*/
- if ((rc = sata_scr_read(ap, SCR_CONTROL, &scontrol)))
+ if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
goto out;
scontrol = (scontrol & 0x0f0) | 0x304;
- if ((rc = sata_scr_write(ap, SCR_CONTROL, scontrol)))
+ if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol)))
goto out;
- sata_set_spd(ap);
+ sata_set_spd(link);
}
/* issue phy wake/reset */
- if ((rc = sata_scr_read(ap, SCR_CONTROL, &scontrol)))
+ if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
goto out;
scontrol = (scontrol & 0x0f0) | 0x301;
- if ((rc = sata_scr_write_flush(ap, SCR_CONTROL, scontrol)))
+ if ((rc = sata_scr_write_flush(link, SCR_CONTROL, scontrol)))
goto out;
/* Couldn't find anything in SATA I/II specs, but AHCI-1.1
@@ -2820,8 +2825,8 @@ int sata_port_hardreset(struct ata_port
*/
msleep(1);
- /* bring phy back */
- rc = sata_phy_resume(ap, timing);
+ /* bring link back */
+ rc = sata_link_resume(link, timing);
out:
DPRINTK("EXIT, rc=%d\n", rc);
return rc;
@@ -2843,7 +2848,8 @@ int sata_port_hardreset(struct ata_port
*/
int sata_std_hardreset(struct ata_port *ap, unsigned int *class)
{
- const unsigned long *timing = sata_ehc_deb_timing(&ap->link.eh_context);
+ struct ata_link *link = &ap->link;
+ const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
int rc;
DPRINTK("ENTER\n");
@@ -2857,7 +2863,7 @@ int sata_std_hardreset(struct ata_port *
}
/* TODO: phy layer with polling, timeouts, etc. */
- if (ata_port_offline(ap)) {
+ if (ata_link_offline(link)) {
*class = ATA_DEV_NONE;
DPRINTK("EXIT, link offline\n");
return 0;
@@ -2891,16 +2897,17 @@ int sata_std_hardreset(struct ata_port *
*/
void ata_std_postreset(struct ata_port *ap, unsigned int *classes)
{
+ struct ata_link *link = &ap->link;
u32 serror;
DPRINTK("ENTER\n");
/* print link status */
- sata_print_link_status(ap);
+ sata_print_link_status(link);
/* clear SError */
- if (sata_scr_read(ap, SCR_ERROR, &serror) == 0)
- sata_scr_write(ap, SCR_ERROR, serror);
+ if (sata_scr_read(link, SCR_ERROR, &serror) == 0)
+ sata_scr_write(link, SCR_ERROR, serror);
/* re-enable interrupts */
if (!ap->ops->error_handler) {
@@ -2943,12 +2950,13 @@ void ata_std_postreset(struct ata_port *
*/
void sata_std_hp_poll_activate(struct ata_port *ap)
{
+ struct ata_link *link = &ap->link;
u32 serror;
- sata_scr_read(ap, SCR_ERROR, &serror);
+ sata_scr_read(link, SCR_ERROR, &serror);
serror &= SERR_PHYRDY_CHG | SERR_DEV_XCHG;
if (serror)
- sata_scr_write(ap, SCR_ERROR, serror);
+ sata_scr_write(link, SCR_ERROR, serror);
ap->hp_poll_data = 0;
}
@@ -2970,10 +2978,11 @@ void sata_std_hp_poll_activate(struct at
int sata_std_hp_poll(struct ata_port *ap)
{
unsigned long state = (unsigned long)ap->hp_poll_data;
+ struct ata_link *link = &ap->link;
u32 serror;
int rc = 0;
- sata_scr_read(ap, SCR_ERROR, &serror);
+ sata_scr_read(link, SCR_ERROR, &serror);
serror &= SERR_PHYRDY_CHG | SERR_DEV_XCHG;
switch (state) {
@@ -2984,7 +2993,7 @@ int sata_std_hp_poll(struct ata_port *ap
* hotplug event till hotplug event stays
* quiescent for one full polling interval.
*/
- sata_scr_write(ap, SCR_ERROR, serror);
+ sata_scr_write(link, SCR_ERROR, serror);
state = 1;
}
break;
@@ -2993,7 +3002,7 @@ int sata_std_hp_poll(struct ata_port *ap
if (!serror)
rc = 1;
else
- sata_scr_write(ap, SCR_ERROR, serror);
+ sata_scr_write(link, SCR_ERROR, serror);
break;
}
@@ -5008,9 +5017,9 @@ irqreturn_t ata_interrupt (int irq, void
/**
* sata_scr_valid - test whether SCRs are accessible
- * @ap: ATA port to test SCR accessibility for
+ * @link: ATA link to test SCR accessibility for
*
- * Test whether SCRs are accessible for @ap.
+ * Test whether SCRs are accessible for @link.
*
* LOCKING:
* None.
@@ -5018,18 +5027,20 @@ irqreturn_t ata_interrupt (int irq, void
* RETURNS:
* 1 if SCRs are accessible, 0 otherwise.
*/
-int sata_scr_valid(struct ata_port *ap)
+int sata_scr_valid(struct ata_link *link)
{
+ struct ata_port *ap = link->ap;
+
return ap->cbl == ATA_CBL_SATA && ap->ops->scr_read;
}
/**
* sata_scr_read - read SCR register of the specified port
- * @ap: ATA port to read SCR for
+ * @link: ATA link to read SCR for
* @reg: SCR to read
* @val: Place to store read value
*
- * Read SCR register @reg of @ap into *@val. This function is
+ * Read SCR register @reg of @link into *@val. This function is
* guaranteed to succeed if the cable type of the port is SATA
* and the port implements ->scr_read.
*
@@ -5039,9 +5050,11 @@ int sata_scr_valid(struct ata_port *ap)
* RETURNS:
* 0 on success, negative errno on failure.
*/
-int sata_scr_read(struct ata_port *ap, int reg, u32 *val)
+int sata_scr_read(struct ata_link *link, int reg, u32 *val)
{
- if (sata_scr_valid(ap)) {
+ struct ata_port *ap = link->ap;
+
+ if (sata_scr_valid(link)) {
*val = ap->ops->scr_read(ap, reg);
return 0;
}
@@ -5050,11 +5063,11 @@ int sata_scr_read(struct ata_port *ap, i
/**
* sata_scr_write - write SCR register of the specified port
- * @ap: ATA port to write SCR for
+ * @link: ATA link to write SCR for
* @reg: SCR to write
* @val: value to write
*
- * Write @val to SCR register @reg of @ap. This function is
+ * Write @val to SCR register @reg of @link. This function is
* guaranteed to succeed if the cable type of the port is SATA
* and the port implements ->scr_read.
*
@@ -5064,9 +5077,11 @@ int sata_scr_read(struct ata_port *ap, i
* RETURNS:
* 0 on success, negative errno on failure.
*/
-int sata_scr_write(struct ata_port *ap, int reg, u32 val)
+int sata_scr_write(struct ata_link *link, int reg, u32 val)
{
- if (sata_scr_valid(ap)) {
+ struct ata_port *ap = link->ap;
+
+ if (sata_scr_valid(link)) {
ap->ops->scr_write(ap, reg, val);
return 0;
}
@@ -5075,7 +5090,7 @@ int sata_scr_write(struct ata_port *ap,
/**
* sata_scr_write_flush - write SCR register of the specified port and flush
- * @ap: ATA port to write SCR for
+ * @link: ATA link to write SCR for
* @reg: SCR to write
* @val: value to write
*
@@ -5088,9 +5103,11 @@ int sata_scr_write(struct ata_port *ap,
* RETURNS:
* 0 on success, negative errno on failure.
*/
-int sata_scr_write_flush(struct ata_port *ap, int reg, u32 val)
+int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
{
- if (sata_scr_valid(ap)) {
+ struct ata_port *ap = link->ap;
+
+ if (sata_scr_valid(link)) {
ap->ops->scr_write(ap, reg, val);
ap->ops->scr_read(ap, reg);
return 0;
@@ -5099,12 +5116,12 @@ int sata_scr_write_flush(struct ata_port
}
/**
- * ata_port_online - test whether the given port is online
- * @ap: ATA port to test
+ * ata_link_online - test whether the given link is online
+ * @link: ATA link to test
*
- * Test whether @ap is online. Note that this function returns 0
- * if online status of @ap cannot be obtained, so
- * ata_port_online(ap) != !ata_port_offline(ap).
+ * Test whether @link is online. Note that this function returns
+ * 0 if online status of @link cannot be obtained, so
+ * ata_link_online(link) != !ata_link_offline(link).
*
* LOCKING:
* None.
@@ -5112,22 +5129,23 @@ int sata_scr_write_flush(struct ata_port
* RETURNS:
* 1 if the port online status is available and online.
*/
-int ata_port_online(struct ata_port *ap)
+int ata_link_online(struct ata_link *link)
{
u32 sstatus;
- if (!sata_scr_read(ap, SCR_STATUS, &sstatus) && (sstatus & 0xf) == 0x3)
+ if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 &&
+ (sstatus & 0xf) == 0x3)
return 1;
return 0;
}
/**
- * ata_port_offline - test whether the given port is offline
- * @ap: ATA port to test
+ * ata_link_offline - test whether the given link is offline
+ * @link: ATA link to test
*
- * Test whether @ap is offline. Note that this function returns
- * 0 if offline status of @ap cannot be obtained, so
- * ata_port_online(ap) != !ata_port_offline(ap).
+ * Test whether @link is offline. Note that this function
+ * returns 0 if offline status of @link cannot be obtained, so
+ * ata_link_online(link) != !ata_link_offline(link).
*
* LOCKING:
* None.
@@ -5135,11 +5153,12 @@ int ata_port_online(struct ata_port *ap)
* RETURNS:
* 1 if the port offline status is available and offline.
*/
-int ata_port_offline(struct ata_port *ap)
+int ata_link_offline(struct ata_link *link)
{
u32 sstatus;
- if (!sata_scr_read(ap, SCR_STATUS, &sstatus) && (sstatus & 0xf) != 0x3)
+ if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0 &&
+ (sstatus & 0xf) != 0x3)
return 1;
return 0;
}
@@ -5664,7 +5683,7 @@ int ata_device_add(const struct ata_prob
int rc;
/* init sata_spd_limit to the current value */
- if (sata_scr_read(ap, SCR_CONTROL, &scontrol) == 0) {
+ if (sata_scr_read(&ap->link, SCR_CONTROL, &scontrol) == 0) {
int spd = (scontrol >> 4) & 0xf;
ap->link.hw_sata_spd_limit &= (1 << spd) - 1;
}
@@ -6225,8 +6244,8 @@ EXPORT_SYMBOL_GPL(ata_bmdma_error_handle
EXPORT_SYMBOL_GPL(ata_bmdma_post_internal_cmd);
EXPORT_SYMBOL_GPL(ata_port_probe);
EXPORT_SYMBOL_GPL(sata_set_spd);
-EXPORT_SYMBOL_GPL(sata_phy_debounce);
-EXPORT_SYMBOL_GPL(sata_phy_resume);
+EXPORT_SYMBOL_GPL(sata_link_debounce);
+EXPORT_SYMBOL_GPL(sata_link_resume);
EXPORT_SYMBOL_GPL(sata_phy_reset);
EXPORT_SYMBOL_GPL(__sata_phy_reset);
EXPORT_SYMBOL_GPL(ata_bus_reset);
@@ -6256,8 +6275,8 @@ EXPORT_SYMBOL_GPL(sata_scr_valid);
EXPORT_SYMBOL_GPL(sata_scr_read);
EXPORT_SYMBOL_GPL(sata_scr_write);
EXPORT_SYMBOL_GPL(sata_scr_write_flush);
-EXPORT_SYMBOL_GPL(ata_port_online);
-EXPORT_SYMBOL_GPL(ata_port_offline);
+EXPORT_SYMBOL_GPL(ata_link_online);
+EXPORT_SYMBOL_GPL(ata_link_offline);
EXPORT_SYMBOL_GPL(ata_host_suspend);
EXPORT_SYMBOL_GPL(ata_host_resume);
EXPORT_SYMBOL_GPL(ata_id_string);
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index bfae7fa..9cf41c4 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -1290,7 +1290,7 @@ static int ata_eh_speed_down(struct ata_
return 0;
/* speed down SATA link speed if possible */
- if (sata_down_spd_limit(dev->link->ap) == 0)
+ if (sata_down_spd_limit(dev->link) == 0)
return ATA_EH_HARDRESET;
/* lower transfer mode */
@@ -1315,7 +1315,8 @@ static int ata_eh_speed_down(struct ata_
*/
static void ata_eh_autopsy(struct ata_port *ap)
{
- struct ata_eh_context *ehc = &ap->link.eh_context;
+ struct ata_link *link = &ap->link;
+ struct ata_eh_context *ehc = &link->eh_context;
unsigned int all_err_mask = 0;
int tag, is_io = 0;
u32 serror;
@@ -1327,7 +1328,7 @@ static void ata_eh_autopsy(struct ata_po
return;
/* obtain and analyze SError */
- rc = sata_scr_read(ap, SCR_ERROR, &serror);
+ rc = sata_scr_read(link, SCR_ERROR, &serror);
if (rc == 0) {
ehc->i.serror |= serror;
ata_eh_analyze_serror(ap);
@@ -1515,7 +1516,8 @@ 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->link.eh_context;
+ struct ata_link *link = &ap->link;
+ struct ata_eh_context *ehc = &link->eh_context;
unsigned int *classes = ehc->classes;
int tries = ATA_EH_RESET_TRIES;
int verbose = !(ehc->i.flags & ATA_EHI_QUIET);
@@ -1532,7 +1534,7 @@ static int ata_eh_reset(struct ata_port
*/
action = ehc->i.action;
ehc->i.action &= ~ATA_EH_RESET_MASK;
- if (softreset && (!hardreset || (!sata_set_spd_needed(ap) &&
+ if (softreset && (!hardreset || (!sata_set_spd_needed(link) &&
!(action & ATA_EH_HARDRESET))))
ehc->i.action |= ATA_EH_SOFTRESET;
else
@@ -1558,7 +1560,7 @@ static int ata_eh_reset(struct ata_port
reset = softreset;
else {
/* prereset told us not to reset, bang classes and return */
- ata_link_for_each_dev(dev, &ap->link)
+ ata_link_for_each_dev(dev, link)
classes[dev->devno] = ATA_DEV_NONE;
return 0;
}
@@ -1625,7 +1627,7 @@ static int ata_eh_reset(struct ata_port
ssleep(5);
if (reset == hardreset)
- sata_down_spd_limit(ap);
+ sata_down_spd_limit(link);
if (hardreset)
reset = hardreset;
goto retry;
@@ -1635,7 +1637,7 @@ static int ata_eh_reset(struct ata_port
/* After the reset, the device state is PIO 0 and the
* controller state is undefined. Record the mode.
*/
- ata_link_for_each_dev(dev, &ap->link)
+ ata_link_for_each_dev(dev, link)
dev->pio_mode = XFER_PIO_0;
if (postreset)
@@ -1663,7 +1665,7 @@ static int ata_eh_revalidate_and_attach(
unsigned int action = ata_eh_dev_action(dev);
if (action & ATA_EH_REVALIDATE && ata_dev_ready(dev)) {
- if (ata_port_offline(ap)) {
+ if (ata_link_offline(dev->link)) {
rc = -EIO;
break;
}
@@ -1920,7 +1922,7 @@ static void ata_eh_handle_dev_fail(struc
ehc->tries[dev->devno] = 0;
break;
case -EIO:
- sata_down_spd_limit(ap);
+ sata_down_spd_limit(&ap->link);
default:
ehc->tries[dev->devno]--;
if (down_xfermask &&
@@ -1933,7 +1935,7 @@ static void ata_eh_handle_dev_fail(struc
ata_dev_disable(dev);
/* detach if offline */
- if (ata_port_offline(ap))
+ if (ata_link_offline(&ap->link))
ata_eh_detach_dev(dev);
/* probe if requested */
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 083234c..336805e 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -776,7 +776,7 @@ void ata_bmdma_error_handler(struct ata_
ata_reset_fn_t hardreset;
hardreset = NULL;
- if (sata_scr_valid(ap))
+ if (sata_scr_valid(&ap->link))
hardreset = sata_std_hardreset;
ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, hardreset,
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 017dc08..d8e9f4e 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -54,8 +54,8 @@ extern unsigned int ata_do_simple_cmd(st
extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
int post_reset, u16 *id);
extern int ata_dev_configure(struct ata_device *dev, int print_info);
-extern int sata_down_spd_limit(struct ata_port *ap);
-extern int sata_set_spd_needed(struct ata_port *ap);
+extern int sata_down_spd_limit(struct ata_link *link);
+extern int sata_set_spd_needed(struct ata_link *link);
extern int ata_down_xfermask_limit(struct ata_device *dev, int force_pio0);
extern int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev);
extern void ata_qc_free(struct ata_queued_cmd *qc);
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 9776a67..a56cb24 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -1311,8 +1311,8 @@ static void mv_err_intr(struct ata_port
edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
if (EDMA_ERR_SERR & edma_err_cause) {
- sata_scr_read(ap, SCR_ERROR, &serr);
- sata_scr_write_flush(ap, SCR_ERROR, serr);
+ sata_scr_read(&ap->link, SCR_ERROR, &serr);
+ sata_scr_write_flush(&ap->link, SCR_ERROR, serr);
}
if (EDMA_ERR_SELF_DIS & edma_err_cause) {
struct mv_port_priv *pp = ap->private_data;
@@ -1951,15 +1951,15 @@ static void __mv_phy_reset(struct ata_po
/* Issue COMRESET via SControl */
comreset_retry:
- sata_scr_write_flush(ap, SCR_CONTROL, 0x301);
+ sata_scr_write_flush(&ap->link, SCR_CONTROL, 0x301);
__msleep(1, can_sleep);
- sata_scr_write_flush(ap, SCR_CONTROL, 0x300);
+ sata_scr_write_flush(&ap->link, SCR_CONTROL, 0x300);
__msleep(20, can_sleep);
timeout = jiffies + msecs_to_jiffies(200);
do {
- sata_scr_read(ap, SCR_STATUS, &sstatus);
+ sata_scr_read(&ap->link, SCR_STATUS, &sstatus);
if (((sstatus & 0x3) == 3) || ((sstatus & 0x3) == 0))
break;
@@ -1976,10 +1976,10 @@ comreset_retry:
"SCtrl 0x%08x\n", mv_scr_read(ap, SCR_STATUS),
mv_scr_read(ap, SCR_ERROR), mv_scr_read(ap, SCR_CONTROL));
- if (ata_port_online(ap)) {
+ if (ata_link_online(&ap->link)) {
ata_port_probe(ap);
} else {
- sata_scr_read(ap, SCR_STATUS, &sstatus);
+ sata_scr_read(&ap->link, SCR_STATUS, &sstatus);
ata_port_printk(ap, KERN_INFO,
"no device found (phy stat %08x)\n", sstatus);
ata_port_disable(ap);
diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index ea1e3e5..29de9bd 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -551,7 +551,7 @@ static int sil24_softreset(struct ata_po
DPRINTK("ENTER\n");
- if (ata_port_offline(ap)) {
+ if (ata_link_offline(&ap->link)) {
DPRINTK("PHY reports no device\n");
*class = ATA_DEV_NONE;
goto out;
@@ -608,10 +608,10 @@ static int sil24_hardreset(struct ata_po
u32 tmp;
/* sil24 does the right thing(tm) without any protection */
- sata_set_spd(ap);
+ sata_set_spd(&ap->link);
tout_msec = 100;
- if (ata_port_online(ap))
+ if (ata_link_online(&ap->link))
tout_msec = 5000;
writel(PORT_CS_DEV_RST, port + PORT_CTRL_STAT);
@@ -621,14 +621,14 @@ static int sil24_hardreset(struct ata_po
/* SStatus oscillates between zero and valid status after
* DEV_RST, debounce it.
*/
- rc = sata_phy_debounce(ap, sata_deb_timing_long);
+ rc = sata_link_debounce(&ap->link, sata_deb_timing_long);
if (rc) {
reason = "PHY debouncing failed";
goto err;
}
if (tmp & PORT_CS_DEV_RST) {
- if (ata_port_offline(ap))
+ if (ata_link_offline(&ap->link))
return 0;
reason = "link not ready";
goto err;
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 48503d4..315ab6f 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -710,9 +710,10 @@ extern void ata_port_probe(struct ata_po
extern void __sata_phy_reset(struct ata_port *ap);
extern void sata_phy_reset(struct ata_port *ap);
extern void ata_bus_reset(struct ata_port *ap);
-extern int sata_set_spd(struct ata_port *ap);
-extern int sata_phy_debounce(struct ata_port *ap, const unsigned long *param);
-extern int sata_phy_resume(struct ata_port *ap, const unsigned long *param);
+extern int sata_set_spd(struct ata_link *link);
+extern int sata_link_debounce(struct ata_link *link,
+ const unsigned long *params);
+extern int sata_link_resume(struct ata_link *link, const unsigned long *params);
extern int ata_std_prereset(struct ata_port *ap);
extern int ata_std_softreset(struct ata_port *ap, unsigned int *classes);
extern int sata_port_hardreset(struct ata_port *ap,
@@ -753,12 +754,12 @@ extern int ata_sas_slave_configure(struc
extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *),
struct ata_port *ap);
extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
-extern int sata_scr_valid(struct ata_port *ap);
-extern int sata_scr_read(struct ata_port *ap, int reg, u32 *val);
-extern int sata_scr_write(struct ata_port *ap, int reg, u32 val);
-extern int sata_scr_write_flush(struct ata_port *ap, int reg, u32 val);
-extern int ata_port_online(struct ata_port *ap);
-extern int ata_port_offline(struct ata_port *ap);
+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 int ata_scsi_device_resume(struct scsi_device *);
extern int ata_scsi_device_suspend(struct scsi_device *, pm_message_t mesg);
extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
--
1.4.2.3
-
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
