#include <linux/completion.h>
#include <linux/suspend.h>
#include <linux/workqueue.h>
-#include <linux/jiffies.h>
#include <linux/scatterlist.h>
#include <linux/io.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>
-#include <asm/semaphore.h>
#include <asm/byteorder.h>
#include <linux/cdrom.h>
const unsigned long sata_deb_timing_long[] = { 100, 2000, 5000 };
const struct ata_port_operations ata_base_port_ops = {
- .sff_irq_clear = ata_noop_irq_clear,
- .prereset = ata_sff_prereset,
- .hardreset = sata_sff_hardreset,
- .postreset = ata_sff_postreset,
+ .prereset = ata_std_prereset,
+ .postreset = ata_std_postreset,
.error_handler = ata_std_error_handler,
};
.inherits = &ata_base_port_ops,
.qc_defer = ata_std_qc_defer,
- .sff_dev_select = ata_noop_dev_select,
-};
-
-const struct ata_port_operations sata_pmp_port_ops = {
- .inherits = &sata_port_ops,
-
- .pmp_prereset = sata_pmp_std_prereset,
- .pmp_hardreset = sata_pmp_std_hardreset,
- .pmp_postreset = sata_pmp_std_postreset,
- .error_handler = sata_pmp_error_handler,
+ .hardreset = sata_std_hardreset,
};
static unsigned int ata_dev_init_params(struct ata_device *dev,
unsigned long xfer_mask;
unsigned int horkage_on;
unsigned int horkage_off;
+ unsigned int lflags;
};
struct ata_force_ent {
module_param_string(force, ata_force_param_buf, sizeof(ata_force_param_buf), 0);
MODULE_PARM_DESC(force, "Force ATA configurations including cable type, link speed and transfer mode (see Documentation/kernel-parameters.txt for details)");
-int atapi_enabled = 1;
+static int atapi_enabled = 1;
module_param(atapi_enabled, int, 0444);
MODULE_PARM_DESC(atapi_enabled, "Enable discovery of ATAPI devices (0=off, 1=on)");
module_param_named(dma, libata_dma_mask, int, 0444);
MODULE_PARM_DESC(dma, "DMA enable/disable (0x1==ATA, 0x2==ATAPI, 0x4==CF)");
-static int ata_probe_timeout = ATA_TMOUT_INTERNAL / HZ;
+static int ata_probe_timeout;
module_param(ata_probe_timeout, int, 0444);
MODULE_PARM_DESC(ata_probe_timeout, "Set ATA probing timeout (seconds)");
MODULE_VERSION(DRV_VERSION);
+/*
+ * Iterator helpers. Don't use directly.
+ *
+ * LOCKING:
+ * Host lock or EH context.
+ */
+struct ata_link *__ata_port_next_link(struct ata_port *ap,
+ struct ata_link *link, bool dev_only)
+{
+ /* NULL link indicates start of iteration */
+ if (!link) {
+ if (dev_only && sata_pmp_attached(ap))
+ return ap->pmp_link;
+ return &ap->link;
+ }
+
+ /* we just iterated over the host link, what's next? */
+ if (ata_is_host_link(link)) {
+ if (!sata_pmp_attached(ap))
+ return NULL;
+ return ap->pmp_link;
+ }
+
+ /* iterate to the next PMP link */
+ if (++link < ap->pmp_link + ap->nr_pmp_links)
+ return link;
+ return NULL;
+}
+
/**
* ata_force_cbl - force cable type according to libata.force
* @ap: ATA port of interest
}
/**
- * ata_force_spd_limit - force SATA spd limit according to libata.force
+ * ata_force_link_limits - force link limits according to libata.force
* @link: ATA link of interest
*
- * Force SATA spd limit according to libata.force and whine about
- * it. When only the port part is specified (e.g. 1:), the limit
- * applies to all links connected to both the host link and all
- * fan-out ports connected via PMP. If the device part is
- * specified as 0 (e.g. 1.00:), it specifies the first fan-out
- * link not the host link. Device number 15 always points to the
- * host link whether PMP is attached or not.
+ * Force link flags and SATA spd limit according to libata.force
+ * and whine about it. When only the port part is specified
+ * (e.g. 1:), the limit applies to all links connected to both
+ * the host link and all fan-out ports connected via PMP. If the
+ * device part is specified as 0 (e.g. 1.00:), it specifies the
+ * first fan-out link not the host link. Device number 15 always
+ * points to the host link whether PMP is attached or not.
*
* LOCKING:
* EH context.
*/
-static void ata_force_spd_limit(struct ata_link *link)
+static void ata_force_link_limits(struct ata_link *link)
{
+ bool did_spd = false;
int linkno, i;
if (ata_is_host_link(link))
if (fe->device != -1 && fe->device != linkno)
continue;
- if (!fe->param.spd_limit)
- continue;
+ /* only honor the first spd limit */
+ if (!did_spd && fe->param.spd_limit) {
+ link->hw_sata_spd_limit = (1 << fe->param.spd_limit) - 1;
+ ata_link_printk(link, KERN_NOTICE,
+ "FORCE: PHY spd limit set to %s\n",
+ fe->param.name);
+ did_spd = true;
+ }
- link->hw_sata_spd_limit = (1 << fe->param.spd_limit) - 1;
- ata_link_printk(link, KERN_NOTICE,
- "FORCE: PHY spd limit set to %s\n", fe->param.name);
- return;
+ /* let lflags stack */
+ if (fe->param.lflags) {
+ link->flags |= fe->param.lflags;
+ ata_link_printk(link, KERN_NOTICE,
+ "FORCE: link flag 0x%x forced -> 0x%x\n",
+ fe->param.lflags, link->flags);
+ }
}
}
}
/**
- * ata_noop_irq_clear - Noop placeholder for irq_clear
- * @ap: Port associated with this ATA transaction.
- */
-void ata_noop_irq_clear(struct ata_port *ap)
-{
-}
-
-/**
* ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure
* @tf: Taskfile to convert
* @pmp: Port multiplier port
{
unsigned int c;
+ BUG_ON(len & 1);
+
while (len > 0) {
c = id[ofs] >> 8;
*s = c;
{
unsigned char *p;
- WARN_ON(!(len & 1));
-
ata_id_string(id, s, ofs, len - 1);
p = s + strnlen(s, len - 1);
}
/**
- * ata_noop_dev_select - Select device 0/1 on ATA bus
- * @ap: ATA channel to manipulate
- * @device: ATA device (numbered from zero) to select
- *
- * This function performs no actual function.
- *
- * May be used as the dev_select() entry in ata_port_operations.
- *
- * LOCKING:
- * caller.
- */
-void ata_noop_dev_select(struct ata_port *ap, unsigned int device)
-{
-}
-
-/**
* ata_dump_id - IDENTIFY DEVICE info debugging output
* @id: IDENTIFY DEVICE page to dump
*
* @ap: The ata_port to queue port_task for
* @fn: workqueue function to be scheduled
* @data: data for @fn to use
- * @delay: delay time for workqueue function
+ * @delay: delay time in msecs for workqueue function
*
* Schedule @fn(@data) for execution after @delay jiffies using
* port_task. There is one port_task per port and it's the
ap->port_task_data = data;
/* may fail if ata_port_flush_task() in progress */
- queue_delayed_work(ata_wq, &ap->port_task, delay);
+ queue_delayed_work(ata_wq, &ap->port_task, msecs_to_jiffies(delay));
}
/**
struct ata_link *link = dev->link;
struct ata_port *ap = link->ap;
u8 command = tf->command;
+ int auto_timeout = 0;
struct ata_queued_cmd *qc;
unsigned int tag, preempted_tag;
u32 preempted_sactive, preempted_qc_active;
spin_unlock_irqrestore(ap->lock, flags);
- if (!timeout)
- timeout = ata_probe_timeout * 1000 / HZ;
+ if (!timeout) {
+ if (ata_probe_timeout)
+ timeout = ata_probe_timeout * 1000;
+ else {
+ timeout = ata_internal_cmd_timeout(dev, command);
+ auto_timeout = 1;
+ }
+ }
rc = wait_for_completion_timeout(&wait, msecs_to_jiffies(timeout));
spin_unlock_irqrestore(ap->lock, flags);
+ if ((err_mask & AC_ERR_TIMEOUT) && auto_timeout)
+ ata_internal_cmd_timed_out(dev, command);
+
return err_mask;
}
}
/**
+ * ata_do_dev_read_id - default ID read method
+ * @dev: device
+ * @tf: proposed taskfile
+ * @id: data buffer
+ *
+ * Issue the identify taskfile and hand back the buffer containing
+ * identify data. For some RAID controllers and for pre ATA devices
+ * this function is wrapped or replaced by the driver
+ */
+unsigned int ata_do_dev_read_id(struct ata_device *dev,
+ struct ata_taskfile *tf, u16 *id)
+{
+ return ata_exec_internal(dev, tf, NULL, DMA_FROM_DEVICE,
+ id, sizeof(id[0]) * ATA_ID_WORDS, 0);
+}
+
+/**
* ata_dev_read_id - Read ID data from the specified device
* @dev: target device
* @p_class: pointer to class of the target device (may be changed)
if (ata_msg_ctl(ap))
ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __func__);
- retry:
+retry:
ata_tf_init(dev, &tf);
switch (class) {
*/
tf.flags |= ATA_TFLAG_POLLING;
- err_mask = ata_exec_internal(dev, &tf, NULL, DMA_FROM_DEVICE,
- id, sizeof(id[0]) * ATA_ID_WORDS, 0);
+ if (ap->ops->read_id)
+ err_mask = ap->ops->read_id(dev, &tf, id);
+ else
+ err_mask = ata_do_dev_read_id(dev, &tf, id);
+
if (err_mask) {
if (err_mask & AC_ERR_NODEV_HINT) {
ata_dev_printk(dev, KERN_DEBUG,
dev->horkage |= ata_dev_blacklisted(dev);
ata_force_horkage(dev);
+ if (dev->horkage & ATA_HORKAGE_DISABLE) {
+ ata_dev_printk(dev, KERN_INFO,
+ "unsupported device, disabling\n");
+ ata_dev_disable(dev);
+ return 0;
+ }
+
+ if ((!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) &&
+ dev->class == ATA_DEV_ATAPI) {
+ ata_dev_printk(dev, KERN_WARNING,
+ "WARNING: ATAPI is %s, device ignored.\n",
+ atapi_enabled ? "not supported with this driver"
+ : "disabled");
+ ata_dev_disable(dev);
+ return 0;
+ }
+
/* let ACPI work its magic */
rc = ata_acpi_on_devcfg(dev);
if (rc)
* changed notifications and ATAPI ANs.
*/
if ((ap->flags & ATA_FLAG_AN) && ata_id_has_atapi_AN(id) &&
- (!ap->nr_pmp_links ||
+ (!sata_pmp_attached(ap) ||
sata_scr_read(&ap->link, SCR_NOTIFICATION, &sntf) == 0)) {
unsigned int err_mask;
* LOCKING:
* None.
*/
-void sata_print_link_status(struct ata_link *link)
+static void sata_print_link_status(struct ata_link *link)
{
u32 sstatus, scontrol, tmp;
* RETURNS:
* 1 if SATA spd configuration is needed, 0 otherwise.
*/
-int sata_set_spd_needed(struct ata_link *link)
+static int sata_set_spd_needed(struct ata_link *link)
{
u32 scontrol;
if (rc)
return rc;
- /* Old CFA may refuse this command, which is just fine */
- if (dev->xfer_shift == ATA_SHIFT_PIO && ata_id_is_cfa(dev->id))
- ign_dev_err = 1;
-
- /* Some very old devices and some bad newer ones fail any kind of
- SET_XFERMODE request but support PIO0-2 timings and no IORDY */
- if (dev->xfer_shift == ATA_SHIFT_PIO && !ata_id_has_iordy(dev->id) &&
- dev->pio_mode <= XFER_PIO_2)
- ign_dev_err = 1;
-
+ if (dev->xfer_shift == ATA_SHIFT_PIO) {
+ /* Old CFA may refuse this command, which is just fine */
+ if (ata_id_is_cfa(dev->id))
+ ign_dev_err = 1;
+ /* Catch several broken garbage emulations plus some pre
+ ATA devices */
+ if (ata_id_major_version(dev->id) == 0 &&
+ dev->pio_mode <= XFER_PIO_2)
+ ign_dev_err = 1;
+ /* Some very old devices and some bad newer ones fail
+ any kind of SET_XFERMODE request but support PIO0-2
+ timings and no IORDY */
+ if (!ata_id_has_iordy(dev->id) && dev->pio_mode <= XFER_PIO_2)
+ ign_dev_err = 1;
+ }
/* Early MWDMA devices do DMA but don't allow DMA mode setting.
Don't fail an MWDMA0 set IFF the device indicates it is in MWDMA0 */
if (dev->xfer_shift == ATA_SHIFT_MWDMA &&
dev->dma_mode = ata_xfer_mask2mode(dma_mask);
found = 1;
- if (dev->dma_mode != 0xff)
+ if (ata_dma_enabled(dev))
used_dma = 1;
}
if (!found)
/* step 3: set host DMA timings */
ata_link_for_each_dev(dev, link) {
- if (!ata_dev_enabled(dev) || dev->dma_mode == 0xff)
+ if (!ata_dev_enabled(dev) || !ata_dma_enabled(dev))
continue;
dev->xfer_mode = dev->dma_mode;
}
/**
+ * ata_wait_ready - wait for link to become ready
+ * @link: link to be waited on
+ * @deadline: deadline jiffies for the operation
+ * @check_ready: callback to check link readiness
+ *
+ * Wait for @link to become ready. @check_ready should return
+ * positive number if @link is ready, 0 if it isn't, -ENODEV if
+ * link doesn't seem to be occupied, other errno for other error
+ * conditions.
+ *
+ * Transient -ENODEV conditions are allowed for
+ * ATA_TMOUT_FF_WAIT.
+ *
+ * LOCKING:
+ * EH context.
+ *
+ * RETURNS:
+ * 0 if @linke is ready before @deadline; otherwise, -errno.
+ */
+int ata_wait_ready(struct ata_link *link, unsigned long deadline,
+ int (*check_ready)(struct ata_link *link))
+{
+ unsigned long start = jiffies;
+ unsigned long nodev_deadline = ata_deadline(start, ATA_TMOUT_FF_WAIT);
+ int warned = 0;
+
+ if (time_after(nodev_deadline, deadline))
+ nodev_deadline = deadline;
+
+ while (1) {
+ unsigned long now = jiffies;
+ int ready, tmp;
+
+ ready = tmp = check_ready(link);
+ if (ready > 0)
+ return 0;
+
+ /* -ENODEV could be transient. Ignore -ENODEV if link
+ * is online. Also, some SATA devices take a long
+ * time to clear 0xff after reset. For example,
+ * HHD424020F7SV00 iVDR needs >= 800ms while Quantum
+ * GoVault needs even more than that. Wait for
+ * ATA_TMOUT_FF_WAIT on -ENODEV if link isn't offline.
+ *
+ * Note that some PATA controllers (pata_ali) explode
+ * if status register is read more than once when
+ * there's no device attached.
+ */
+ if (ready == -ENODEV) {
+ if (ata_link_online(link))
+ ready = 0;
+ else if ((link->ap->flags & ATA_FLAG_SATA) &&
+ !ata_link_offline(link) &&
+ time_before(now, nodev_deadline))
+ ready = 0;
+ }
+
+ if (ready)
+ return ready;
+ if (time_after(now, deadline))
+ return -EBUSY;
+
+ if (!warned && time_after(now, start + 5 * HZ) &&
+ (deadline - now > 3 * HZ)) {
+ ata_link_printk(link, KERN_WARNING,
+ "link is slow to respond, please be patient "
+ "(ready=%d)\n", tmp);
+ warned = 1;
+ }
+
+ msleep(50);
+ }
+}
+
+/**
+ * ata_wait_after_reset - wait for link to become ready after reset
+ * @link: link to be waited on
+ * @deadline: deadline jiffies for the operation
+ * @check_ready: callback to check link readiness
+ *
+ * Wait for @link to become ready after reset.
+ *
+ * LOCKING:
+ * EH context.
+ *
+ * RETURNS:
+ * 0 if @linke is ready before @deadline; otherwise, -errno.
+ */
+int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
+ int (*check_ready)(struct ata_link *link))
+{
+ msleep(ATA_WAIT_AFTER_RESET);
+
+ return ata_wait_ready(link, deadline, check_ready);
+}
+
+/**
* sata_link_debounce - debounce SATA phy status
* @link: ATA link to debounce SATA phy status for
* @params: timing parameters { interval, duratinon, timeout } in msec
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]);
+ unsigned long interval = params[0];
+ unsigned long duration = params[1];
unsigned long last_jiffies, t;
u32 last, cur;
int rc;
- t = jiffies + msecs_to_jiffies(params[2]);
+ t = ata_deadline(jiffies, params[2]);
if (time_before(t, deadline))
deadline = t;
last_jiffies = jiffies;
while (1) {
- msleep(interval_msec);
+ msleep(interval);
if ((rc = sata_scr_read(link, SCR_STATUS, &cur)))
return rc;
cur &= 0xf;
if (cur == last) {
if (cur == 1 && time_before(jiffies, deadline))
continue;
- if (time_after(jiffies, last_jiffies + duration))
+ if (time_after(jiffies,
+ ata_deadline(last_jiffies, duration)))
return 0;
continue;
}
int sata_link_resume(struct ata_link *link, const unsigned long *params,
unsigned long deadline)
{
- u32 scontrol;
+ u32 scontrol, serror;
int rc;
if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
*/
msleep(200);
- return sata_link_debounce(link, params, deadline);
+ if ((rc = sata_link_debounce(link, params, deadline)))
+ return rc;
+
+ /* clear SError, some PHYs require this even for SRST to work */
+ if (!(rc = sata_scr_read(link, SCR_ERROR, &serror)))
+ rc = sata_scr_write(link, SCR_ERROR, serror);
+
+ return rc != -EINVAL ? rc : 0;
}
/**
- * ata_sff_prereset - prepare for reset
+ * ata_std_prereset - prepare for reset
* @link: ATA link to be reset
* @deadline: deadline jiffies for the operation
*
* RETURNS:
* 0 on success, -errno otherwise.
*/
-int ata_sff_prereset(struct ata_link *link, unsigned long deadline)
+int ata_std_prereset(struct ata_link *link, unsigned long deadline)
{
struct ata_port *ap = link->ap;
struct ata_eh_context *ehc = &link->eh_context;
"link for reset (errno=%d)\n", rc);
}
- /* wait for !BSY if we don't know that no device is attached */
- if (!ata_link_offline(link)) {
- rc = ata_sff_wait_ready(ap, deadline);
- if (rc && rc != -ENODEV) {
- ata_link_printk(link, KERN_WARNING, "device not ready "
- "(errno=%d), forcing hardreset\n", rc);
- ehc->i.action |= ATA_EH_HARDRESET;
- }
- }
+ /* no point in trying softreset on offline link */
+ if (ata_link_offline(link))
+ ehc->i.action &= ~ATA_EH_SOFTRESET;
return 0;
}
* @link: link to reset
* @timing: timing parameters { interval, duratinon, timeout } in msec
* @deadline: deadline jiffies for the operation
+ * @online: optional out parameter indicating link onlineness
+ * @check_ready: optional callback to check link readiness
*
* SATA phy-reset @link using DET bits of SControl register.
+ * After hardreset, link readiness is waited upon using
+ * ata_wait_ready() if @check_ready is specified. LLDs are
+ * allowed to not specify @check_ready and wait itself after this
+ * function returns. Device classification is LLD's
+ * responsibility.
+ *
+ * *@online is set to one iff reset succeeded and @link is online
+ * after reset.
*
* LOCKING:
* Kernel thread context (may sleep)
* 0 on success, -errno otherwise.
*/
int sata_link_hardreset(struct ata_link *link, const unsigned long *timing,
- unsigned long deadline)
+ unsigned long deadline,
+ bool *online, int (*check_ready)(struct ata_link *))
{
u32 scontrol;
int rc;
DPRINTK("ENTER\n");
+ if (online)
+ *online = false;
+
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
/* bring link back */
rc = sata_link_resume(link, timing, deadline);
+ if (rc)
+ goto out;
+ /* if link is offline nothing more to do */
+ if (ata_link_offline(link))
+ goto out;
+
+ /* Link is online. From this point, -ENODEV too is an error. */
+ if (online)
+ *online = true;
+
+ if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) {
+ /* If PMP is supported, we have to do follow-up SRST.
+ * Some PMPs don't send D2H Reg FIS after hardreset if
+ * the first port is empty. Wait only for
+ * ATA_TMOUT_PMP_SRST_WAIT.
+ */
+ if (check_ready) {
+ unsigned long pmp_deadline;
+
+ pmp_deadline = ata_deadline(jiffies,
+ ATA_TMOUT_PMP_SRST_WAIT);
+ if (time_after(pmp_deadline, deadline))
+ pmp_deadline = deadline;
+ ata_wait_ready(link, pmp_deadline, check_ready);
+ }
+ rc = -EAGAIN;
+ goto out;
+ }
+
+ rc = 0;
+ if (check_ready)
+ rc = ata_wait_ready(link, deadline, check_ready);
out:
+ if (rc && rc != -EAGAIN) {
+ /* online is set iff link is online && reset succeeded */
+ if (online)
+ *online = false;
+ ata_link_printk(link, KERN_ERR,
+ "COMRESET failed (errno=%d)\n", rc);
+ }
DPRINTK("EXIT, rc=%d\n", rc);
return rc;
}
/**
- * ata_sff_postreset - standard postreset callback
+ * sata_std_hardreset - COMRESET w/o waiting or classification
+ * @link: link to reset
+ * @class: resulting class of attached device
+ * @deadline: deadline jiffies for the operation
+ *
+ * Standard SATA COMRESET w/o waiting or classification.
+ *
+ * LOCKING:
+ * Kernel thread context (may sleep)
+ *
+ * RETURNS:
+ * 0 if link offline, -EAGAIN if link online, -errno on errors.
+ */
+int sata_std_hardreset(struct ata_link *link, unsigned int *class,
+ unsigned long deadline)
+{
+ const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
+ bool online;
+ int rc;
+
+ /* do hardreset */
+ rc = sata_link_hardreset(link, timing, deadline, &online, NULL);
+ return online ? -EAGAIN : rc;
+}
+
+/**
+ * ata_std_postreset - standard postreset callback
* @link: the target ata_link
* @classes: classes of attached devices
*
* LOCKING:
* Kernel thread context (may sleep)
*/
-void ata_sff_postreset(struct ata_link *link, unsigned int *classes)
+void ata_std_postreset(struct ata_link *link, unsigned int *classes)
{
- struct ata_port *ap = link->ap;
u32 serror;
DPRINTK("ENTER\n");
- /* print link status */
- sata_print_link_status(link);
-
- /* clear SError */
- if (sata_scr_read(link, SCR_ERROR, &serror) == 0)
+ /* reset complete, clear SError */
+ if (!sata_scr_read(link, SCR_ERROR, &serror))
sata_scr_write(link, SCR_ERROR, serror);
- link->eh_info.serror = 0;
-
- /* is double-select really necessary? */
- if (classes[0] != ATA_DEV_NONE)
- ap->ops->sff_dev_select(ap, 1);
- if (classes[1] != ATA_DEV_NONE)
- ap->ops->sff_dev_select(ap, 0);
- /* bail out if no device is present */
- if (classes[0] == ATA_DEV_NONE && classes[1] == ATA_DEV_NONE) {
- DPRINTK("EXIT, no device\n");
- return;
- }
-
- /* set up device control */
- if (ap->ioaddr.ctl_addr)
- iowrite8(ap->ctl, ap->ioaddr.ctl_addr);
+ /* print link status */
+ sata_print_link_status(link);
DPRINTK("EXIT\n");
}
{ "SAMSUNG CD-ROM SN-124", "N001", ATA_HORKAGE_NODMA },
{ "Seagate STT20000A", NULL, ATA_HORKAGE_NODMA },
/* Odd clown on sil3726/4726 PMPs */
- { "Config Disk", NULL, ATA_HORKAGE_NODMA |
- ATA_HORKAGE_SKIP_PM },
+ { "Config Disk", NULL, ATA_HORKAGE_DISABLE },
/* Weird ATAPI devices */
{ "TORiSAN DVD-ROM DRD-N216", NULL, ATA_HORKAGE_MAX_SEC_128 },
/* Devices which get the IVB wrong */
{ "QUANTUM FIREBALLlct10 05", "A03.0900", ATA_HORKAGE_IVB, },
+ /* Maybe we should just blacklist TSSTcorp... */
+ { "TSSTcorp CDDVDW SH-S202H", "SB00", ATA_HORKAGE_IVB, },
+ { "TSSTcorp CDDVDW SH-S202H", "SB01", ATA_HORKAGE_IVB, },
{ "TSSTcorp CDDVDW SH-S202J", "SB00", ATA_HORKAGE_IVB, },
{ "TSSTcorp CDDVDW SH-S202J", "SB01", ATA_HORKAGE_IVB, },
{ "TSSTcorp CDDVDW SH-S202N", "SB00", ATA_HORKAGE_IVB, },
/* If the controller thinks we are 80 wire, we are */
if (ap->cbl == ATA_CBL_PATA80 || ap->cbl == ATA_CBL_SATA)
return 0;
+ /* If the system is known to be 40 wire short cable (eg laptop),
+ then we allow 80 wire modes even if the drive isn't sure */
+ if (ap->cbl == ATA_CBL_PATA40_SHORT)
+ return 0;
/* If the controller doesn't know we scan
- Note: We look for all 40 wire detects at this point.
}
/**
- * ata_check_atapi_dma - Check whether ATAPI DMA can be supported
+ * atapi_check_dma - Check whether ATAPI DMA can be supported
* @qc: Metadata associated with taskfile to check
*
* Allow low-level driver to filter ATA PACKET commands, returning
* RETURNS: 0 when ATAPI DMA can be used
* nonzero otherwise
*/
-int ata_check_atapi_dma(struct ata_queued_cmd *qc)
+int atapi_check_dma(struct ata_queued_cmd *qc)
{
struct ata_port *ap = qc->ap;
struct ata_port *ap = qc->ap;
qc->result_tf.flags = qc->tf.flags;
- ap->ops->sff_tf_read(ap, &qc->result_tf);
+ ap->ops->qc_fill_rtf(qc);
}
static void ata_verify_xfer(struct ata_queued_cmd *qc)
* ata_qc_complete_multiple - Complete multiple qcs successfully
* @ap: port in question
* @qc_active: new qc_active mask
- * @finish_qc: LLDD callback invoked before completing a qc
*
* Complete in-flight commands. This functions is meant to be
* called from low-level driver's interrupt routine to complete
* RETURNS:
* Number of completed commands on success, -errno otherwise.
*/
-int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active,
- void (*finish_qc)(struct ata_queued_cmd *))
+int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active)
{
int nr_done = 0;
u32 done_mask;
continue;
if ((qc = ata_qc_from_tag(ap, i))) {
- if (finish_qc)
- finish_qc(qc);
ata_qc_complete(qc);
nr_done++;
}
int sata_scr_read(struct ata_link *link, int reg, u32 *val)
{
if (ata_is_host_link(link)) {
- struct ata_port *ap = link->ap;
-
if (sata_scr_valid(link))
- return ap->ops->scr_read(ap, reg, val);
+ return link->ap->ops->scr_read(link, reg, val);
return -EOPNOTSUPP;
}
int sata_scr_write(struct ata_link *link, int reg, u32 val)
{
if (ata_is_host_link(link)) {
- struct ata_port *ap = link->ap;
-
if (sata_scr_valid(link))
- return ap->ops->scr_write(ap, reg, val);
+ return link->ap->ops->scr_write(link, reg, val);
return -EOPNOTSUPP;
}
int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
{
if (ata_is_host_link(link)) {
- struct ata_port *ap = link->ap;
int rc;
if (sata_scr_valid(link)) {
- rc = ap->ops->scr_write(ap, reg, val);
+ rc = link->ap->ops->scr_write(link, reg, val);
if (rc == 0)
- rc = ap->ops->scr_read(ap, reg, &val);
+ rc = link->ap->ops->scr_read(link, reg, &val);
return rc;
}
return -EOPNOTSUPP;
*/
int sata_link_init_spd(struct ata_link *link)
{
- u32 scontrol;
u8 spd;
int rc;
- rc = sata_scr_read(link, SCR_CONTROL, &scontrol);
+ rc = sata_scr_read(link, SCR_CONTROL, &link->saved_scontrol);
if (rc)
return rc;
- spd = (scontrol >> 4) & 0xf;
+ spd = (link->saved_scontrol >> 4) & 0xf;
if (spd)
link->hw_sata_spd_limit &= (1 << spd) - 1;
- ata_force_spd_limit(link);
+ ata_force_link_limits(link);
link->sata_spd_limit = link->hw_sata_spd_limit;
ap->msg_enable = ATA_MSG_DRV | ATA_MSG_ERR | ATA_MSG_WARN;
#endif
+#ifdef CONFIG_ATA_SFF
INIT_DELAYED_WORK(&ap->port_task, ata_pio_task);
+#endif
INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug);
INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan);
INIT_LIST_HEAD(&ap->eh_done_q);
*/
static void ata_finalize_port_ops(struct ata_port_operations *ops)
{
- static spinlock_t lock = SPIN_LOCK_UNLOCKED;
+ static DEFINE_SPINLOCK(lock);
const struct ata_port_operations *cur;
void **begin = (void **)ops;
void **end = (void **)&ops->inherits;
spin_lock_irqsave(ap->lock, flags);
ehi->probe_mask |= ATA_ALL_DEVICES;
- ehi->action |= ATA_EH_RESET;
+ ehi->action |= ATA_EH_RESET | ATA_EH_LPM;
ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;
ap->pflags &= ~ATA_PFLAG_INITIALIZING;
struct ata_port *ap = host->ports[i];
ata_scsi_scan_host(ap, 1);
- ata_lpm_schedule(ap, ap->pm_policy);
}
return 0;
ata_port_wait_eh(ap);
/* EH is now guaranteed to see UNLOADING - EH context belongs
- * to us. Disable all existing devices.
+ * to us. Restore SControl and disable all existing devices.
*/
- ata_port_for_each_link(link, ap) {
+ __ata_port_for_each_link(link, ap) {
+ sata_scr_write(link, SCR_CONTROL, link->saved_scontrol);
ata_link_for_each_dev(dev, link)
ata_dev_disable(dev);
}
{ "udma133", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) },
{ "udma/133", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 6) },
{ "udma7", .xfer_mask = 1 << (ATA_SHIFT_UDMA + 7) },
+ { "nohrst", .lflags = ATA_LFLAG_NO_HRST },
+ { "nosrst", .lflags = ATA_LFLAG_NO_SRST },
+ { "norst", .lflags = ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST },
};
char *start = *cur, *p = *cur;
char *id, *val, *endp;
static int __init ata_init(void)
{
- ata_probe_timeout *= HZ;
-
ata_parse_force_param();
ata_wq = create_workqueue("ata");
if (!ata_wq)
- return -ENOMEM;
+ goto free_force_tbl;
ata_aux_wq = create_singlethread_workqueue("ata_aux");
- if (!ata_aux_wq) {
- destroy_workqueue(ata_wq);
- return -ENOMEM;
- }
+ if (!ata_aux_wq)
+ goto free_wq;
printk(KERN_DEBUG "libata version " DRV_VERSION " loaded.\n");
return 0;
+
+free_wq:
+ destroy_workqueue(ata_wq);
+free_force_tbl:
+ kfree(ata_force_tbl);
+ return -ENOMEM;
}
static void __exit ata_exit(void)
* @reg: IO-mapped register
* @mask: Mask to apply to read register value
* @val: Wait condition
- * @interval_msec: polling interval in milliseconds
- * @timeout_msec: timeout in milliseconds
+ * @interval: polling interval in milliseconds
+ * @timeout: timeout in milliseconds
*
* Waiting for some bits of register to change is a common
* operation for ATA controllers. This function reads 32bit LE
* The final register value.
*/
u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val,
- unsigned long interval_msec,
- unsigned long timeout_msec)
+ unsigned long interval, unsigned long timeout)
{
- unsigned long timeout;
+ unsigned long deadline;
u32 tmp;
tmp = ioread32(reg);
* preceding writes reach the controller before starting to
* eat away the timeout.
*/
- timeout = jiffies + (timeout_msec * HZ) / 1000;
+ deadline = ata_deadline(jiffies, timeout);
- while ((tmp & mask) == val && time_before(jiffies, timeout)) {
- msleep(interval_msec);
+ while ((tmp & mask) == val && time_before(jiffies, deadline)) {
+ msleep(interval);
tmp = ioread32(reg);
}
/*
* Dummy port_ops
*/
-static void ata_dummy_noret(struct ata_port *ap) { }
-static int ata_dummy_ret0(struct ata_port *ap) { return 0; }
-static void ata_dummy_qc_noret(struct ata_queued_cmd *qc) { }
-
-static u8 ata_dummy_check_status(struct ata_port *ap)
+static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc)
{
- return ATA_DRDY;
+ return AC_ERR_SYSTEM;
}
-static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc)
+static void ata_dummy_error_handler(struct ata_port *ap)
{
- return AC_ERR_SYSTEM;
+ /* truly dummy */
}
struct ata_port_operations ata_dummy_port_ops = {
- .sff_check_status = ata_dummy_check_status,
- .sff_check_altstatus = ata_dummy_check_status,
- .sff_dev_select = ata_noop_dev_select,
.qc_prep = ata_noop_qc_prep,
.qc_issue = ata_dummy_qc_issue,
- .freeze = ata_dummy_noret,
- .thaw = ata_dummy_noret,
- .error_handler = ata_dummy_noret,
- .post_internal_cmd = ata_dummy_qc_noret,
- .sff_irq_clear = ata_dummy_noret,
- .port_start = ata_dummy_ret0,
- .port_stop = ata_dummy_noret,
+ .error_handler = ata_dummy_error_handler,
};
const struct ata_port_info ata_dummy_port_info = {
EXPORT_SYMBOL_GPL(sata_deb_timing_long);
EXPORT_SYMBOL_GPL(ata_base_port_ops);
EXPORT_SYMBOL_GPL(sata_port_ops);
-EXPORT_SYMBOL_GPL(sata_pmp_port_ops);
EXPORT_SYMBOL_GPL(ata_dummy_port_ops);
EXPORT_SYMBOL_GPL(ata_dummy_port_info);
+EXPORT_SYMBOL_GPL(__ata_port_next_link);
EXPORT_SYMBOL_GPL(ata_std_bios_param);
EXPORT_SYMBOL_GPL(ata_host_init);
EXPORT_SYMBOL_GPL(ata_host_alloc);
EXPORT_SYMBOL_GPL(ata_sg_init);
EXPORT_SYMBOL_GPL(ata_qc_complete);
EXPORT_SYMBOL_GPL(ata_qc_complete_multiple);
-EXPORT_SYMBOL_GPL(ata_noop_dev_select);
-EXPORT_SYMBOL_GPL(sata_print_link_status);
EXPORT_SYMBOL_GPL(atapi_cmd_type);
EXPORT_SYMBOL_GPL(ata_tf_to_fis);
EXPORT_SYMBOL_GPL(ata_tf_from_fis);
EXPORT_SYMBOL_GPL(ata_do_set_mode);
EXPORT_SYMBOL_GPL(ata_std_qc_defer);
EXPORT_SYMBOL_GPL(ata_noop_qc_prep);
-EXPORT_SYMBOL_GPL(ata_noop_irq_clear);
EXPORT_SYMBOL_GPL(ata_port_probe);
EXPORT_SYMBOL_GPL(ata_dev_disable);
EXPORT_SYMBOL_GPL(sata_set_spd);
+EXPORT_SYMBOL_GPL(ata_wait_after_reset);
EXPORT_SYMBOL_GPL(sata_link_debounce);
EXPORT_SYMBOL_GPL(sata_link_resume);
+EXPORT_SYMBOL_GPL(ata_std_prereset);
EXPORT_SYMBOL_GPL(sata_link_hardreset);
+EXPORT_SYMBOL_GPL(sata_std_hardreset);
+EXPORT_SYMBOL_GPL(ata_std_postreset);
EXPORT_SYMBOL_GPL(ata_dev_classify);
EXPORT_SYMBOL_GPL(ata_dev_pair);
EXPORT_SYMBOL_GPL(ata_port_disable);
#endif /* CONFIG_PM */
EXPORT_SYMBOL_GPL(ata_id_string);
EXPORT_SYMBOL_GPL(ata_id_c_string);
+EXPORT_SYMBOL_GPL(ata_do_dev_read_id);
EXPORT_SYMBOL_GPL(ata_scsi_simulate);
EXPORT_SYMBOL_GPL(ata_pio_need_iordy);
#endif /* CONFIG_PM */
#endif /* CONFIG_PCI */
-EXPORT_SYMBOL_GPL(sata_pmp_qc_defer_cmd_switch);
-EXPORT_SYMBOL_GPL(sata_pmp_std_prereset);
-EXPORT_SYMBOL_GPL(sata_pmp_std_hardreset);
-EXPORT_SYMBOL_GPL(sata_pmp_std_postreset);
-EXPORT_SYMBOL_GPL(sata_pmp_error_handler);
-
EXPORT_SYMBOL_GPL(__ata_ehi_push_desc);
EXPORT_SYMBOL_GPL(ata_ehi_push_desc);
EXPORT_SYMBOL_GPL(ata_ehi_clear_desc);
EXPORT_SYMBOL_GPL(ata_eh_thaw_port);
EXPORT_SYMBOL_GPL(ata_eh_qc_complete);
EXPORT_SYMBOL_GPL(ata_eh_qc_retry);
+EXPORT_SYMBOL_GPL(ata_eh_analyze_ncq_error);
EXPORT_SYMBOL_GPL(ata_do_eh);
EXPORT_SYMBOL_GPL(ata_std_error_handler);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff