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libata-link: linkify PHY-related functions

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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@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-08-06 18:36:23 +09:00 committed by Jeff Garzik
parent f58229f806
commit 936fd73286
11 changed files with 177 additions and 161 deletions
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4
drivers/ata/ahci.c
View File

@ -1052,7 +1052,7 @@ static int ahci_do_softreset(struct ata_port *ap, unsigned int *class,
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;
@ -1140,7 +1140,7 @@ static int ahci_hardreset(struct ata_port *ap, unsigned int *class,
ahci_start_engine(ap);
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;

227
drivers/ata/libata-core.c
View File

@ -2201,7 +2201,7 @@ int ata_bus_probe(struct ata_port *ap)
/* This is the last chance, better to slow
* down than lose it.
*/
sata_down_spd_limit(ap);
sata_down_spd_limit(&ap->link);
ata_down_xfermask_limit(dev, ATA_DNXFER_PIO);
}
}
@ -2230,28 +2230,28 @@ 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.
*/
void sata_print_link_status(struct ata_port *ap)
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);
}
@ -2271,32 +2271,33 @@ void sata_print_link_status(struct ata_port *ap)
*/
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);
@ -2370,9 +2371,9 @@ void ata_port_disable(struct ata_port *ap)
/**
* 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().
*
@ -2382,24 +2383,24 @@ void ata_port_disable(struct ata_port *ap)
* 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;
if (!sata_scr_valid(ap))
if (!sata_scr_valid(link))
return -EOPNOTSUPP;
/* If SCR can be read, use it to determine the current SPD.
* If not, use cached value in ap->sata_spd.
* If not, use cached value in link->sata_spd.
*/
rc = sata_scr_read(ap, SCR_STATUS, &sstatus);
rc = sata_scr_read(link, SCR_STATUS, &sstatus);
if (rc == 0)
spd = (sstatus >> 4) & 0xf;
else
spd = ap->link.sata_spd;
spd = link->sata_spd;
mask = ap->link.sata_spd_limit;
mask = link->sata_spd_limit;
if (mask <= 1)
return -EINVAL;
@ -2419,22 +2420,22 @@ int sata_down_spd_limit(struct ata_port *ap)
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);
@ -2444,10 +2445,10 @@ static int __sata_set_spd_needed(struct ata_port *ap, u32 *scontrol)
/**
* 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.
*
@ -2457,21 +2458,21 @@ static int __sata_set_spd_needed(struct ata_port *ap, u32 *scontrol)
* 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.
@ -2480,18 +2481,18 @@ int sata_set_spd_needed(struct ata_port *ap)
* 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;
@ -2997,7 +2998,7 @@ int ata_wait_ready(struct ata_port *ap, unsigned long deadline)
if (!(status & ATA_BUSY))
return 0;
if (!ata_port_online(ap) && status == 0xff)
if (!ata_link_online(&ap->link) && status == 0xff)
return -ENODEV;
if (time_after(now, deadline))
return -EBUSY;
@ -3199,12 +3200,12 @@ 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
* @deadline: deadline jiffies for the operation
*
* 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 DET gets stuck at 1 on
@ -3220,8 +3221,8 @@ err_out:
* RETURNS:
* 0 on success, -errno on failure.
*/
int sata_phy_debounce(struct ata_port *ap, const unsigned long *params,
unsigned long deadline)
int sata_link_debounce(struct ata_link *link, const unsigned long *params,
unsigned long deadline)
{
unsigned long interval_msec = params[0];
unsigned long duration = msecs_to_jiffies(params[1]);
@ -3233,7 +3234,7 @@ int sata_phy_debounce(struct ata_port *ap, const unsigned long *params,
if (time_before(t, deadline))
deadline = t;
if ((rc = sata_scr_read(ap, SCR_STATUS, &cur)))
if ((rc = sata_scr_read(link, SCR_STATUS, &cur)))
return rc;
cur &= 0xf;
@ -3242,7 +3243,7 @@ int sata_phy_debounce(struct ata_port *ap, const unsigned long *params,
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;
@ -3268,12 +3269,12 @@ int sata_phy_debounce(struct ata_port *ap, const unsigned long *params,
}
/**
* 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
* @deadline: deadline jiffies for the operation
*
* Resume SATA phy of @ap and debounce it.
* Resume SATA phy @link and debounce it.
*
* LOCKING:
* Kernel thread context (may sleep)
@ -3281,18 +3282,18 @@ int sata_phy_debounce(struct ata_port *ap, const unsigned long *params,
* RETURNS:
* 0 on success, -errno on failure.
*/
int sata_phy_resume(struct ata_port *ap, const unsigned long *params,
unsigned long deadline)
int sata_link_resume(struct ata_link *link, const unsigned long *params,
unsigned long deadline)
{
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
@ -3300,7 +3301,7 @@ int sata_phy_resume(struct ata_port *ap, const unsigned long *params,
*/
msleep(200);
return sata_phy_debounce(ap, params, deadline);
return sata_link_debounce(link, params, deadline);
}
/**
@ -3322,7 +3323,8 @@ int sata_phy_resume(struct ata_port *ap, const unsigned long *params,
*/
int ata_std_prereset(struct ata_port *ap, unsigned long deadline)
{
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;
@ -3335,9 +3337,9 @@ int ata_std_prereset(struct ata_port *ap, unsigned long deadline)
if (ehc->i.action & ATA_EH_HARDRESET)
return 0;
/* if SATA, resume phy */
/* if SATA, resume link */
if (ap->flags & ATA_FLAG_SATA) {
rc = sata_phy_resume(ap, timing, deadline);
rc = sata_link_resume(link, timing, deadline);
/* whine about phy resume failure but proceed */
if (rc && rc != -EOPNOTSUPP)
ata_port_printk(ap, KERN_WARNING, "failed to resume "
@ -3347,7 +3349,7 @@ int ata_std_prereset(struct ata_port *ap, unsigned long deadline)
/* 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)) {
rc = ata_wait_ready(ap, deadline);
if (rc && rc != -ENODEV) {
ata_port_printk(ap, KERN_WARNING, "device not ready "
@ -3376,6 +3378,7 @@ int ata_std_prereset(struct ata_port *ap, unsigned long deadline)
int ata_std_softreset(struct ata_port *ap, unsigned int *classes,
unsigned long deadline)
{
struct ata_link *link = &ap->link;
unsigned int slave_possible = ap->flags & ATA_FLAG_SLAVE_POSS;
unsigned int devmask = 0;
int rc;
@ -3383,7 +3386,7 @@ int ata_std_softreset(struct ata_port *ap, unsigned int *classes,
DPRINTK("ENTER\n");
if (ata_port_offline(ap)) {
if (ata_link_offline(link)) {
classes[0] = ATA_DEV_NONE;
goto out;
}
@ -3401,7 +3404,7 @@ int ata_std_softreset(struct ata_port *ap, unsigned int *classes,
DPRINTK("about to softreset, devmask=%x\n", devmask);
rc = ata_bus_softreset(ap, devmask, deadline);
/* if link is occupied, -ENODEV too is an error */
if (rc && (rc != -ENODEV || sata_scr_valid(ap))) {
if (rc && (rc != -ENODEV || sata_scr_valid(link))) {
ata_port_printk(ap, KERN_ERR, "SRST failed (errno=%d)\n", rc);
return rc;
}
@ -3433,35 +3436,36 @@ int ata_std_softreset(struct ata_port *ap, unsigned int *classes,
int sata_port_hardreset(struct ata_port *ap, const unsigned long *timing,
unsigned long deadline)
{
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
@ -3469,8 +3473,8 @@ int sata_port_hardreset(struct ata_port *ap, const unsigned long *timing,
*/
msleep(1);
/* bring phy back */
rc = sata_phy_resume(ap, timing, deadline);
/* bring link back */
rc = sata_link_resume(link, timing, deadline);
out:
DPRINTK("EXIT, rc=%d\n", rc);
return rc;
@ -3494,7 +3498,8 @@ int sata_port_hardreset(struct ata_port *ap, const unsigned long *timing,
int sata_std_hardreset(struct ata_port *ap, unsigned int *class,
unsigned long deadline)
{
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");
@ -3508,7 +3513,7 @@ int sata_std_hardreset(struct ata_port *ap, unsigned int *class,
}
/* 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;
@ -3547,16 +3552,17 @@ int sata_std_hardreset(struct ata_port *ap, unsigned int *class,
*/
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);
/* is double-select really necessary? */
if (classes[0] != ATA_DEV_NONE)
@ -5729,9 +5735,9 @@ irqreturn_t ata_interrupt (int irq, void *dev_instance)
/**
* 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.
@ -5739,18 +5745,20 @@ irqreturn_t ata_interrupt (int irq, void *dev_instance)
* 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->flags & ATA_FLAG_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.
*
@ -5760,20 +5768,22 @@ 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))
return ap->ops->scr_read(ap, reg, val);
return -EOPNOTSUPP;
}
/**
* 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.
*
@ -5783,16 +5793,18 @@ int sata_scr_read(struct ata_port *ap, int reg, u32 *val)
* 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))
return ap->ops->scr_write(ap, reg, val);
return -EOPNOTSUPP;
}
/**
* 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
*
@ -5805,11 +5817,12 @@ int sata_scr_write(struct ata_port *ap, int reg, u32 val)
* 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)
{
struct ata_port *ap = link->ap;
int rc;
if (sata_scr_valid(ap)) {
if (sata_scr_valid(link)) {
rc = ap->ops->scr_write(ap, reg, val);
if (rc == 0)
rc = ap->ops->scr_read(ap, reg, &val);
@ -5819,12 +5832,12 @@ int sata_scr_write_flush(struct ata_port *ap, int reg, u32 val)
}
/**
* 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.
@ -5832,22 +5845,23 @@ int sata_scr_write_flush(struct ata_port *ap, int reg, u32 val)
* 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.
@ -5855,11 +5869,12 @@ 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;
}
@ -6397,7 +6412,7 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
ap->cbl = ATA_CBL_SATA;
/* 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;
if (spd)
ap->link.hw_sata_spd_limit &= (1 << spd) - 1;
@ -6924,8 +6939,8 @@ EXPORT_SYMBOL_GPL(ata_bmdma_post_internal_cmd);
EXPORT_SYMBOL_GPL(ata_port_probe);
EXPORT_SYMBOL_GPL(ata_dev_disable);
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);
@ -6952,8 +6967,8 @@ 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);
#ifdef CONFIG_PM
EXPORT_SYMBOL_GPL(ata_host_suspend);
EXPORT_SYMBOL_GPL(ata_host_resume);

31
drivers/ata/libata-eh.c
View File

@ -1501,7 +1501,7 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev, int is_io,
/* speed down? */
if (verdict & ATA_EH_SPDN_SPEED_DOWN) {
/* speed down SATA link speed if possible */
if (sata_down_spd_limit(dev->link->ap) == 0) {
if (sata_down_spd_limit(dev->link) == 0) {
action |= ATA_EH_HARDRESET;
goto done;
}
@ -1561,7 +1561,8 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev, int is_io,
*/
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;
@ -1573,7 +1574,7 @@ static void ata_eh_autopsy(struct ata_port *ap)
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);
@ -1782,7 +1783,8 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
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 verbose = !(ehc->i.flags & ATA_EHI_QUIET);
int try = 0;
@ -1800,7 +1802,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
*/
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
@ -1814,7 +1816,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
"port disabled. ignoring.\n");
ehc->i.action &= ~ATA_EH_RESET_MASK;
ata_link_for_each_dev(dev, &ap->link)
ata_link_for_each_dev(dev, link)
classes[dev->devno] = ATA_DEV_NONE;
rc = 0;
@ -1832,7 +1834,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
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;
rc = 0;
goto out;
@ -1902,7 +1904,7 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
if (rc == -EPIPE ||
try == ARRAY_SIZE(ata_eh_reset_timeouts) - 1)
sata_down_spd_limit(ap);
sata_down_spd_limit(link);
if (hardreset)
reset = hardreset;
goto retry;
@ -1914,12 +1916,12 @@ static int ata_eh_reset(struct ata_port *ap, int classify,
/* 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;
/* record current link speed */
if (sata_scr_read(ap, SCR_STATUS, &sstatus) == 0)
ap->link.sata_spd = (sstatus >> 4) & 0xf;
if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0)
link->sata_spd = (sstatus >> 4) & 0xf;
if (postreset)
postreset(ap, classes);
@ -1957,7 +1959,7 @@ static int ata_eh_revalidate_and_attach(struct ata_port *ap,
readid_flags |= ATA_READID_POSTRESET;
if ((action & ATA_EH_REVALIDATE) && ata_dev_enabled(dev)) {
if (ata_port_offline(ap)) {
if (ata_link_offline(&ap->link)) {
rc = -EIO;
goto err;
}
@ -2079,7 +2081,6 @@ static int ata_eh_skip_recovery(struct ata_port *ap)
static void ata_eh_handle_dev_fail(struct ata_device *dev, int err)
{
struct ata_port *ap = dev->link->ap;
struct ata_eh_context *ehc = &dev->link->eh_context;
ehc->tries[dev->devno]--;
@ -2096,7 +2097,7 @@ static void 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(ap);
sata_down_spd_limit(dev->link);
ata_down_xfermask_limit(dev, ATA_DNXFER_PIO);
}
}
@ -2106,7 +2107,7 @@ static void ata_eh_handle_dev_fail(struct ata_device *dev, int err)
ata_dev_disable(dev);
/* detach if offline */
if (ata_port_offline(ap))
if (ata_link_offline(dev->link))
ata_eh_detach_dev(dev);
/* probe if requested */

2
drivers/ata/libata-sff.c
View File

@ -500,7 +500,7 @@ void ata_bmdma_error_handler(struct ata_port *ap)
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,

4
drivers/ata/libata.h
View File

@ -78,8 +78,8 @@ extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class,
extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
extern int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags);
extern int ata_dev_configure(struct ata_device *dev);
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, unsigned int sel);
extern int ata_set_mode(struct ata_port *ap, struct ata_device **r_failed_dev);
extern void ata_sg_clean(struct ata_queued_cmd *qc);

2
drivers/ata/pata_scc.c
View File

@ -612,7 +612,7 @@ static int scc_std_softreset (struct ata_port *ap, unsigned int *classes,
DPRINTK("ENTER\n");
if (ata_port_offline(ap)) {
if (ata_link_offline(&ap->link)) {
classes[0] = ATA_DEV_NONE;
goto out;
}

4
drivers/ata/sata_inic162x.c
View File

@ -435,7 +435,7 @@ static int inic_hardreset(struct ata_port *ap, unsigned int *class,
msleep(1);
writew(val & ~IDMA_CTL_RST_ATA, idma_ctl);
rc = sata_phy_resume(ap, timing, deadline);
rc = sata_link_resume(&ap->link, timing, deadline);
if (rc) {
ata_port_printk(ap, KERN_WARNING, "failed to resume "
"link after reset (errno=%d)\n", rc);
@ -443,7 +443,7 @@ static int inic_hardreset(struct ata_port *ap, unsigned int *class,
}
*class = ATA_DEV_NONE;
if (ata_port_online(ap)) {
if (ata_link_online(&ap->link)) {
struct ata_taskfile tf;
/* wait a while before checking status */

26
drivers/ata/sata_mv.c
View File

@ -1423,8 +1423,8 @@ static void mv_err_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
/* just a guess: do we need to do this? should we
* expand this, and do it in all cases?
*/
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);
}
edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
@ -1468,8 +1468,8 @@ static void mv_err_intr(struct ata_port *ap, struct ata_queued_cmd *qc)
}
if (edma_err_cause & EDMA_ERR_SERR) {
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);
err_mask = AC_ERR_ATA_BUS;
action |= ATA_EH_HARDRESET;
}
@ -1687,7 +1687,7 @@ static void mv_pci_error(struct ata_host *host, void __iomem *mmio)
for (i = 0; i < host->n_ports; i++) {
ap = host->ports[i];
if (!ata_port_offline(ap)) {
if (!ata_link_offline(&ap->link)) {
ehi = &ap->link.eh_info;
ata_ehi_clear_desc(ehi);
if (!printed++)
@ -2198,14 +2198,14 @@ static void mv_phy_reset(struct ata_port *ap, unsigned int *class,
/* 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);
sata_scr_write_flush(ap, SCR_CONTROL, 0x300);
sata_scr_write_flush(&ap->link, SCR_CONTROL, 0x300);
msleep(20);
do {
sata_scr_read(ap, SCR_STATUS, &sstatus);
sata_scr_read(&ap->link, SCR_STATUS, &sstatus);
if (((sstatus & 0x3) == 3) || ((sstatus & 0x3) == 0))
break;
@ -2230,7 +2230,7 @@ comreset_retry:
}
#endif
if (ata_port_offline(ap)) {
if (ata_link_offline(&ap->link)) {
*class = ATA_DEV_NONE;
return;
}
@ -2285,7 +2285,7 @@ static int mv_prereset(struct ata_port *ap, unsigned long deadline)
if (ehc->i.action & ATA_EH_HARDRESET)
return 0;
if (ata_port_online(ap))
if (ata_link_online(&ap->link))
rc = ata_wait_ready(ap, deadline);
else
rc = -ENODEV;
@ -2313,11 +2313,11 @@ static void mv_postreset(struct ata_port *ap, unsigned int *classes)
u32 serr;
/* print link status */
sata_print_link_status(ap);
sata_print_link_status(&ap->link);
/* clear SError */
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);
/* bail out if no device is present */
if (classes[0] == ATA_DEV_NONE && classes[1] == ATA_DEV_NONE) {

4
drivers/ata/sata_promise.c
View File

@ -475,7 +475,7 @@ static void pdc_atapi_pkt(struct ata_queued_cmd *qc)
buf32[2] = 0; /* no next-packet */
/* select drive */
if (sata_scr_valid(ap)) {
if (sata_scr_valid(&ap->link)) {
dev_sel = PDC_DEVICE_SATA;
} else {
dev_sel = ATA_DEVICE_OBS;
@ -643,7 +643,7 @@ static void pdc_error_intr(struct ata_port *ap, struct ata_queued_cmd *qc,
| PDC_PCI_SYS_ERR | PDC1_PCI_PARITY_ERR))
ac_err_mask |= AC_ERR_HOST_BUS;
if (sata_scr_valid(ap)) {
if (sata_scr_valid(&ap->link)) {
u32 serror;
pdc_sata_scr_read(ap, SCR_ERROR, &serror);

10
drivers/ata/sata_sil24.c
View File

@ -593,7 +593,7 @@ static int sil24_do_softreset(struct ata_port *ap, unsigned int *class,
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;
@ -650,10 +650,10 @@ static int sil24_hardreset(struct ata_port *ap, unsigned int *class,
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);
@ -663,14 +663,14 @@ static int sil24_hardreset(struct ata_port *ap, unsigned int *class,
/* SStatus oscillates between zero and valid status after
* DEV_RST, debounce it.
*/
rc = sata_phy_debounce(ap, sata_deb_timing_long, deadline);
rc = sata_link_debounce(&ap->link, sata_deb_timing_long, deadline);
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;

24
include/linux/libata.h
View File

@ -696,16 +696,16 @@ static inline int ata_port_is_dummy(struct ata_port *ap)
return ap->ops == &ata_dummy_port_ops;
}
extern void sata_print_link_status(struct ata_port *ap);
extern void sata_print_link_status(struct ata_link *link);
extern void ata_port_probe(struct ata_port *);
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,
unsigned long deadline);
extern int sata_phy_resume(struct ata_port *ap, const unsigned long *param,
unsigned long deadline);
extern int sata_set_spd(struct ata_link *link);
extern int sata_link_debounce(struct ata_link *link,
const unsigned long *params, unsigned long deadline);
extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
unsigned long deadline);
extern int ata_std_prereset(struct ata_port *ap, unsigned long deadline);
extern int ata_std_softreset(struct ata_port *ap, unsigned int *classes,
unsigned long deadline);
@ -753,12 +753,12 @@ extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
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);
#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);