*
*/
-#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include "libata.h"
/* debounce timing parameters in msecs { interval, duration, timeout } */
-const unsigned long sata_deb_timing_boot[] = { 5, 100, 2000 };
-const unsigned long sata_deb_timing_eh[] = { 25, 500, 2000 };
-const unsigned long sata_deb_timing_before_fsrst[] = { 100, 2000, 5000 };
+const unsigned long sata_deb_timing_normal[] = { 5, 100, 2000 };
+const unsigned long sata_deb_timing_hotplug[] = { 25, 500, 2000 };
+const unsigned long sata_deb_timing_long[] = { 100, 2000, 5000 };
static unsigned int ata_dev_init_params(struct ata_device *dev,
u16 heads, u16 sectors);
{
int rc;
- if (ap->flags & ATA_FLAG_FLUSH_PORT_TASK)
+ if (ap->pflags & ATA_PFLAG_FLUSH_PORT_TASK)
return;
PREPARE_WORK(&ap->port_task, fn, data);
DPRINTK("ENTER\n");
spin_lock_irqsave(ap->lock, flags);
- ap->flags |= ATA_FLAG_FLUSH_PORT_TASK;
+ ap->pflags |= ATA_PFLAG_FLUSH_PORT_TASK;
spin_unlock_irqrestore(ap->lock, flags);
DPRINTK("flush #1\n");
}
spin_lock_irqsave(ap->lock, flags);
- ap->flags &= ~ATA_FLAG_FLUSH_PORT_TASK;
+ ap->pflags &= ~ATA_PFLAG_FLUSH_PORT_TASK;
spin_unlock_irqrestore(ap->lock, flags);
if (ata_msg_ctl(ap))
struct ata_queued_cmd *qc;
unsigned int tag, preempted_tag;
u32 preempted_sactive, preempted_qc_active;
- DECLARE_COMPLETION(wait);
+ DECLARE_COMPLETION_ONSTACK(wait);
unsigned long flags;
unsigned int err_mask;
int rc;
spin_lock_irqsave(ap->lock, flags);
/* no internal command while frozen */
- if (ap->flags & ATA_FLAG_FROZEN) {
+ if (ap->pflags & ATA_PFLAG_FROZEN) {
spin_unlock_irqrestore(ap->lock, flags);
return AC_ERR_SYSTEM;
}
snprintf(desc, desc_sz, "NCQ (depth %d/%d)", hdepth, ddepth);
}
+static void ata_set_port_max_cmd_len(struct ata_port *ap)
+{
+ int i;
+
+ if (ap->host) {
+ ap->host->max_cmd_len = 0;
+ for (i = 0; i < ATA_MAX_DEVICES; i++)
+ ap->host->max_cmd_len = max_t(unsigned int,
+ ap->host->max_cmd_len,
+ ap->device[i].cdb_len);
+ }
+}
+
/**
* ata_dev_configure - Configure the specified ATA/ATAPI device
* @dev: Target device to configure
struct ata_port *ap = dev->ap;
const u16 *id = dev->id;
unsigned int xfer_mask;
- int i, rc;
+ int rc;
if (!ata_dev_enabled(dev) && ata_msg_info(ap)) {
ata_dev_printk(dev, KERN_INFO,
ata_dev_config_ncq(dev, ncq_desc, sizeof(ncq_desc));
/* print device info to dmesg */
- if (ata_msg_info(ap))
+ if (ata_msg_drv(ap) && print_info)
ata_dev_printk(dev, KERN_INFO, "ATA-%d, "
"max %s, %Lu sectors: %s %s\n",
ata_id_major_version(id),
}
/* print device info to dmesg */
- if (ata_msg_info(ap))
+ if (ata_msg_drv(ap) && print_info)
ata_dev_printk(dev, KERN_INFO, "ATA-%d, "
"max %s, %Lu sectors: CHS %u/%u/%u\n",
ata_id_major_version(id),
if (dev->id[59] & 0x100) {
dev->multi_count = dev->id[59] & 0xff;
- if (ata_msg_info(ap))
+ if (ata_msg_drv(ap) && print_info)
ata_dev_printk(dev, KERN_INFO,
"ata%u: dev %u multi count %u\n",
ap->id, dev->devno, dev->multi_count);
}
/* print device info to dmesg */
- if (ata_msg_info(ap))
+ if (ata_msg_drv(ap) && print_info)
ata_dev_printk(dev, KERN_INFO, "ATAPI, max %s%s\n",
ata_mode_string(xfer_mask),
cdb_intr_string);
}
- ap->host->max_cmd_len = 0;
- for (i = 0; i < ATA_MAX_DEVICES; i++)
- ap->host->max_cmd_len = max_t(unsigned int,
- ap->host->max_cmd_len,
- ap->device[i].cdb_len);
+ ata_set_port_max_cmd_len(ap);
/* limit bridge transfers to udma5, 200 sectors */
if (ata_dev_knobble(dev)) {
- if (ata_msg_info(ap))
+ if (ata_msg_drv(ap) && print_info)
ata_dev_printk(dev, KERN_INFO,
"applying bridge limits\n");
dev->udma_mask &= ATA_UDMA5;
* return error code and failing device on failure.
*/
for (i = 0; i < ATA_MAX_DEVICES; i++) {
- if (ata_dev_enabled(&ap->device[i])) {
+ if (ata_dev_ready(&ap->device[i])) {
ap->ops->set_mode(ap);
break;
}
for (i = 0; i < ATA_MAX_DEVICES; i++) {
dev = &ap->device[i];
- if (!ata_dev_enabled(dev))
+ /* don't udpate suspended devices' xfer mode */
+ if (!ata_dev_ready(dev))
continue;
rc = ata_dev_set_mode(dev);
/* first, debounce phy if SATA */
if (ap->cbl == ATA_CBL_SATA) {
- rc = sata_phy_debounce(ap, sata_deb_timing_eh);
+ rc = sata_phy_debounce(ap, sata_deb_timing_hotplug);
/* if debounced successfully and offline, no need to wait */
if ((rc == 0 || rc == -EOPNOTSUPP) && ata_port_offline(ap))
int ata_std_prereset(struct ata_port *ap)
{
struct ata_eh_context *ehc = &ap->eh_context;
- const unsigned long *timing;
+ const unsigned long *timing = sata_ehc_deb_timing(ehc);
int rc;
- /* hotplug? */
- if (ehc->i.flags & ATA_EHI_HOTPLUGGED) {
- if (ap->flags & ATA_FLAG_HRST_TO_RESUME)
- ehc->i.action |= ATA_EH_HARDRESET;
- if (ap->flags & ATA_FLAG_SKIP_D2H_BSY)
- ata_wait_spinup(ap);
- }
+ /* handle link resume & hotplug spinup */
+ if ((ehc->i.flags & ATA_EHI_RESUME_LINK) &&
+ (ap->flags & ATA_FLAG_HRST_TO_RESUME))
+ ehc->i.action |= ATA_EH_HARDRESET;
+
+ if ((ehc->i.flags & ATA_EHI_HOTPLUGGED) &&
+ (ap->flags & ATA_FLAG_SKIP_D2H_BSY))
+ ata_wait_spinup(ap);
/* if we're about to do hardreset, nothing more to do */
if (ehc->i.action & ATA_EH_HARDRESET)
/* if SATA, resume phy */
if (ap->cbl == ATA_CBL_SATA) {
- if (ap->flags & ATA_FLAG_LOADING)
- timing = sata_deb_timing_boot;
- else
- timing = sata_deb_timing_eh;
-
rc = sata_phy_resume(ap, timing);
if (rc && rc != -EOPNOTSUPP) {
/* phy resume failed */
*/
int sata_std_hardreset(struct ata_port *ap, unsigned int *class)
{
+ struct ata_eh_context *ehc = &ap->eh_context;
+ const unsigned long *timing = sata_ehc_deb_timing(ehc);
u32 scontrol;
int rc;
if ((rc = sata_scr_read(ap, SCR_CONTROL, &scontrol)))
return rc;
- scontrol = (scontrol & 0x0f0) | 0x302;
+ scontrol = (scontrol & 0x0f0) | 0x304;
if ((rc = sata_scr_write(ap, SCR_CONTROL, scontrol)))
return rc;
msleep(1);
/* bring phy back */
- sata_phy_resume(ap, sata_deb_timing_eh);
+ sata_phy_resume(ap, timing);
/* TODO: phy layer with polling, timeouts, etc. */
if (ata_port_offline(ap)) {
unsigned int i;
/* no command while frozen */
- if (unlikely(ap->flags & ATA_FLAG_FROZEN))
+ if (unlikely(ap->pflags & ATA_PFLAG_FROZEN))
return NULL;
/* the last tag is reserved for internal command. */
* taken care of.
*/
if (ap->ops->error_handler) {
- WARN_ON(ap->flags & ATA_FLAG_FROZEN);
+ WARN_ON(ap->pflags & ATA_PFLAG_FROZEN);
if (unlikely(qc->err_mask))
qc->flags |= ATA_QCFLAG_FAILED;
return 0;
}
-static int ata_standby_drive(struct ata_device *dev)
+static int ata_host_set_request_pm(struct ata_host_set *host_set,
+ pm_message_t mesg, unsigned int action,
+ unsigned int ehi_flags, int wait)
{
- unsigned int err_mask;
+ unsigned long flags;
+ int i, rc;
- err_mask = ata_do_simple_cmd(dev, ATA_CMD_STANDBYNOW1);
- if (err_mask) {
- ata_dev_printk(dev, KERN_ERR, "failed to standby drive "
- "(err_mask=0x%x)\n", err_mask);
- return -EIO;
- }
+ for (i = 0; i < host_set->n_ports; i++) {
+ struct ata_port *ap = host_set->ports[i];
- return 0;
-}
+ /* Previous resume operation might still be in
+ * progress. Wait for PM_PENDING to clear.
+ */
+ if (ap->pflags & ATA_PFLAG_PM_PENDING) {
+ ata_port_wait_eh(ap);
+ WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING);
+ }
-static int ata_start_drive(struct ata_device *dev)
-{
- unsigned int err_mask;
+ /* request PM ops to EH */
+ spin_lock_irqsave(ap->lock, flags);
- err_mask = ata_do_simple_cmd(dev, ATA_CMD_IDLEIMMEDIATE);
- if (err_mask) {
- ata_dev_printk(dev, KERN_ERR, "failed to start drive "
- "(err_mask=0x%x)\n", err_mask);
- return -EIO;
+ ap->pm_mesg = mesg;
+ if (wait) {
+ rc = 0;
+ ap->pm_result = &rc;
+ }
+
+ ap->pflags |= ATA_PFLAG_PM_PENDING;
+ ap->eh_info.action |= action;
+ ap->eh_info.flags |= ehi_flags;
+
+ ata_port_schedule_eh(ap);
+
+ spin_unlock_irqrestore(ap->lock, flags);
+
+ /* wait and check result */
+ if (wait) {
+ ata_port_wait_eh(ap);
+ WARN_ON(ap->pflags & ATA_PFLAG_PM_PENDING);
+ if (rc)
+ return rc;
+ }
}
return 0;
}
/**
- * ata_device_resume - wakeup a previously suspended devices
- * @dev: the device to resume
+ * ata_host_set_suspend - suspend host_set
+ * @host_set: host_set to suspend
+ * @mesg: PM message
*
- * Kick the drive back into action, by sending it an idle immediate
- * command and making sure its transfer mode matches between drive
- * and host.
+ * Suspend @host_set. Actual operation is performed by EH. This
+ * function requests EH to perform PM operations and waits for EH
+ * to finish.
*
+ * LOCKING:
+ * Kernel thread context (may sleep).
+ *
+ * RETURNS:
+ * 0 on success, -errno on failure.
*/
-int ata_device_resume(struct ata_device *dev)
+int ata_host_set_suspend(struct ata_host_set *host_set, pm_message_t mesg)
{
- struct ata_port *ap = dev->ap;
+ int i, j, rc;
+
+ rc = ata_host_set_request_pm(host_set, mesg, 0, ATA_EHI_QUIET, 1);
+ if (rc)
+ goto fail;
- if (ap->flags & ATA_FLAG_SUSPENDED) {
- struct ata_device *failed_dev;
+ /* EH is quiescent now. Fail if we have any ready device.
+ * This happens if hotplug occurs between completion of device
+ * suspension and here.
+ */
+ for (i = 0; i < host_set->n_ports; i++) {
+ struct ata_port *ap = host_set->ports[i];
- ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT);
- ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 200000);
+ for (j = 0; j < ATA_MAX_DEVICES; j++) {
+ struct ata_device *dev = &ap->device[j];
- ap->flags &= ~ATA_FLAG_SUSPENDED;
- while (ata_set_mode(ap, &failed_dev))
- ata_dev_disable(failed_dev);
+ if (ata_dev_ready(dev)) {
+ ata_port_printk(ap, KERN_WARNING,
+ "suspend failed, device %d "
+ "still active\n", dev->devno);
+ rc = -EBUSY;
+ goto fail;
+ }
+ }
}
- if (!ata_dev_enabled(dev))
- return 0;
- if (dev->class == ATA_DEV_ATA)
- ata_start_drive(dev);
+ host_set->dev->power.power_state = mesg;
return 0;
+
+ fail:
+ ata_host_set_resume(host_set);
+ return rc;
}
/**
- * ata_device_suspend - prepare a device for suspend
- * @dev: the device to suspend
- * @state: target power management state
+ * ata_host_set_resume - resume host_set
+ * @host_set: host_set to resume
*
- * Flush the cache on the drive, if appropriate, then issue a
- * standbynow command.
+ * Resume @host_set. Actual operation is performed by EH. This
+ * function requests EH to perform PM operations and returns.
+ * Note that all resume operations are performed parallely.
+ *
+ * LOCKING:
+ * Kernel thread context (may sleep).
*/
-int ata_device_suspend(struct ata_device *dev, pm_message_t state)
+void ata_host_set_resume(struct ata_host_set *host_set)
{
- struct ata_port *ap = dev->ap;
-
- if (!ata_dev_enabled(dev))
- return 0;
- if (dev->class == ATA_DEV_ATA)
- ata_flush_cache(dev);
-
- if (state.event != PM_EVENT_FREEZE)
- ata_standby_drive(dev);
- ap->flags |= ATA_FLAG_SUSPENDED;
- return 0;
+ ata_host_set_request_pm(host_set, PMSG_ON, ATA_EH_SOFTRESET,
+ ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 0);
+ host_set->dev->power.power_state = PMSG_ON;
}
/**
iounmap(host_set->mmio_base);
}
-
-/**
- * ata_host_remove - Unregister SCSI host structure with upper layers
- * @ap: Port to unregister
- * @do_unregister: 1 if we fully unregister, 0 to just stop the port
- *
- * LOCKING:
- * Inherited from caller.
- */
-
-static void ata_host_remove(struct ata_port *ap, unsigned int do_unregister)
-{
- struct Scsi_Host *sh = ap->host;
-
- DPRINTK("ENTER\n");
-
- if (do_unregister)
- scsi_remove_host(sh);
-
- ap->ops->port_stop(ap);
-}
-
/**
* ata_dev_init - Initialize an ata_device structure
* @dev: Device structure to initialize
}
if (ap->ops->error_handler) {
+ struct ata_eh_info *ehi = &ap->eh_info;
unsigned long flags;
ata_port_probe(ap);
/* kick EH for boot probing */
spin_lock_irqsave(ap->lock, flags);
- ap->eh_info.probe_mask = (1 << ATA_MAX_DEVICES) - 1;
- ap->eh_info.action |= ATA_EH_SOFTRESET;
+ ehi->probe_mask = (1 << ATA_MAX_DEVICES) - 1;
+ ehi->action |= ATA_EH_SOFTRESET;
+ ehi->flags |= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET;
- ap->flags |= ATA_FLAG_LOADING;
+ ap->pflags |= ATA_PFLAG_LOADING;
ata_port_schedule_eh(ap);
spin_unlock_irqrestore(ap->lock, flags);
err_out:
for (i = 0; i < count; i++) {
- ata_host_remove(host_set->ports[i], 1);
- scsi_host_put(host_set->ports[i]->host);
+ struct ata_port *ap = host_set->ports[i];
+ if (ap) {
+ ap->ops->port_stop(ap);
+ scsi_host_put(ap->host);
+ }
}
err_free_ret:
kfree(host_set);
int i;
if (!ap->ops->error_handler)
- return;
+ goto skip_eh;
/* tell EH we're leaving & flush EH */
spin_lock_irqsave(ap->lock, flags);
- ap->flags |= ATA_FLAG_UNLOADING;
+ ap->pflags |= ATA_PFLAG_UNLOADING;
spin_unlock_irqrestore(ap->lock, flags);
ata_port_wait_eh(ap);
cancel_delayed_work(&ap->hotplug_task);
flush_workqueue(ata_aux_wq);
+ skip_eh:
/* remove the associated SCSI host */
scsi_remove_host(ap->host);
}
DPRINTK("ENTER\n");
ap->ops->port_disable(ap);
- ata_host_remove(ap, 0);
+ ap->ops->port_stop(ap);
DPRINTK("EXIT\n");
return 1;
return (tmp == bits->val) ? 1 : 0;
}
-int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t state)
+void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t state)
{
pci_save_state(pdev);
- pci_disable_device(pdev);
- pci_set_power_state(pdev, PCI_D3hot);
- return 0;
+
+ if (state.event == PM_EVENT_SUSPEND) {
+ pci_disable_device(pdev);
+ pci_set_power_state(pdev, PCI_D3hot);
+ }
}
-int ata_pci_device_resume(struct pci_dev *pdev)
+void ata_pci_device_do_resume(struct pci_dev *pdev)
{
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
pci_enable_device(pdev);
pci_set_master(pdev);
+}
+
+int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct ata_host_set *host_set = dev_get_drvdata(&pdev->dev);
+ int rc = 0;
+
+ rc = ata_host_set_suspend(host_set, state);
+ if (rc)
+ return rc;
+
+ if (host_set->next) {
+ rc = ata_host_set_suspend(host_set->next, state);
+ if (rc) {
+ ata_host_set_resume(host_set);
+ return rc;
+ }
+ }
+
+ ata_pci_device_do_suspend(pdev, state);
+
+ return 0;
+}
+
+int ata_pci_device_resume(struct pci_dev *pdev)
+{
+ struct ata_host_set *host_set = dev_get_drvdata(&pdev->dev);
+
+ ata_pci_device_do_resume(pdev);
+ ata_host_set_resume(host_set);
+ if (host_set->next)
+ ata_host_set_resume(host_set->next);
+
return 0;
}
#endif /* CONFIG_PCI */
module_exit(ata_exit);
static unsigned long ratelimit_time;
-static spinlock_t ata_ratelimit_lock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(ata_ratelimit_lock);
int ata_ratelimit(void)
{
* Do not depend on ABI/API stability.
*/
-EXPORT_SYMBOL_GPL(sata_deb_timing_boot);
-EXPORT_SYMBOL_GPL(sata_deb_timing_eh);
-EXPORT_SYMBOL_GPL(sata_deb_timing_before_fsrst);
+EXPORT_SYMBOL_GPL(sata_deb_timing_normal);
+EXPORT_SYMBOL_GPL(sata_deb_timing_hotplug);
+EXPORT_SYMBOL_GPL(sata_deb_timing_long);
EXPORT_SYMBOL_GPL(ata_std_bios_param);
EXPORT_SYMBOL_GPL(ata_std_ports);
EXPORT_SYMBOL_GPL(ata_device_add);
EXPORT_SYMBOL_GPL(sata_scr_write_flush);
EXPORT_SYMBOL_GPL(ata_port_online);
EXPORT_SYMBOL_GPL(ata_port_offline);
+EXPORT_SYMBOL_GPL(ata_host_set_suspend);
+EXPORT_SYMBOL_GPL(ata_host_set_resume);
EXPORT_SYMBOL_GPL(ata_id_string);
EXPORT_SYMBOL_GPL(ata_id_c_string);
EXPORT_SYMBOL_GPL(ata_scsi_simulate);
EXPORT_SYMBOL_GPL(ata_pci_init_native_mode);
EXPORT_SYMBOL_GPL(ata_pci_init_one);
EXPORT_SYMBOL_GPL(ata_pci_remove_one);
+EXPORT_SYMBOL_GPL(ata_pci_device_do_suspend);
+EXPORT_SYMBOL_GPL(ata_pci_device_do_resume);
EXPORT_SYMBOL_GPL(ata_pci_device_suspend);
EXPORT_SYMBOL_GPL(ata_pci_device_resume);
EXPORT_SYMBOL_GPL(ata_pci_default_filter);
EXPORT_SYMBOL_GPL(ata_pci_clear_simplex);
#endif /* CONFIG_PCI */
-EXPORT_SYMBOL_GPL(ata_device_suspend);
-EXPORT_SYMBOL_GPL(ata_device_resume);
EXPORT_SYMBOL_GPL(ata_scsi_device_suspend);
EXPORT_SYMBOL_GPL(ata_scsi_device_resume);
git.openpandora.org / pandora-kernel.git / blobdiff