@@ -34,14 +34,6 @@ struct ata_acpi_gtf {
u8 tf[REGS_PER_GTF]; /* regs. 0x1f1 - 0x1f7 */
} __packed;
-/*
- * Helper - belongs in the PCI layer somewhere eventually
- */
-static int is_pci_dev(struct device *dev)
-{
- return (dev->bus == &pci_bus_type);
-}
-
static void ata_acpi_clear_gtf(struct ata_device *dev)
{
kfree(dev->gtf_cache);
@@ -49,47 +41,18 @@ static void ata_acpi_clear_gtf(struct ata_device *dev)
}
/**
- * ata_ap_acpi_handle - provide the acpi_handle for an ata_port
- * @ap: the acpi_handle returned will correspond to this port
- *
- * Returns the acpi_handle for the ACPI namespace object corresponding to
- * the ata_port passed into the function, or NULL if no such object exists
- */
-acpi_handle ata_ap_acpi_handle(struct ata_port *ap)
-{
- if (ap->flags & ATA_FLAG_ACPI_SATA)
- return NULL;
-
- return ap->scsi_host ?
- DEVICE_ACPI_HANDLE(&ap->scsi_host->shost_gendev) : NULL;
-}
-EXPORT_SYMBOL(ata_ap_acpi_handle);
-
-/**
* ata_dev_acpi_handle - provide the acpi_handle for an ata_device
- * @dev: the acpi_device returned will correspond to this port
+ * @dev: the acpi_handle returned will correspond to this device
*
* Returns the acpi_handle for the ACPI namespace object corresponding to
* the ata_device passed into the function, or NULL if no such object exists
+ * or ACPI is disabled for this device due to consecutive errors.
*/
acpi_handle ata_dev_acpi_handle(struct ata_device *dev)
{
- acpi_integer adr;
- struct ata_port *ap = dev->link->ap;
-
- if (libata_noacpi || dev->flags & ATA_DFLAG_ACPI_DISABLED)
- return NULL;
-
- if (ap->flags & ATA_FLAG_ACPI_SATA) {
- if (!sata_pmp_attached(ap))
- adr = SATA_ADR(ap->port_no, NO_PORT_MULT);
- else
- adr = SATA_ADR(ap->port_no, dev->link->pmp);
- return acpi_get_child(DEVICE_ACPI_HANDLE(ap->host->dev), adr);
- } else
- return acpi_get_child(ata_ap_acpi_handle(ap), dev->devno);
+ return dev->flags & ATA_DFLAG_ACPI_DISABLED ?
+ NULL : ACPI_HANDLE(&dev->tdev);
}
-EXPORT_SYMBOL(ata_dev_acpi_handle);
/* @ap and @dev are the same as ata_acpi_handle_hotplug() */
static void ata_acpi_detach_device(struct ata_port *ap, struct ata_device *dev)
@@ -156,10 +119,8 @@ static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
spin_unlock_irqrestore(ap->lock, flags);
- if (wait) {
+ if (wait)
ata_port_wait_eh(ap);
- flush_work(&ap->hotplug_task.work);
- }
}
static void ata_acpi_dev_notify_dock(acpi_handle handle, u32 event, void *data)
@@ -216,37 +177,55 @@ static const struct acpi_dock_ops ata_acpi_ap_dock_ops = {
.uevent = ata_acpi_ap_uevent,
};
-void ata_acpi_hotplug_init(struct ata_host *host)
+/* bind acpi handle to pata port */
+void ata_acpi_bind_port(struct ata_port *ap)
{
- int i;
+ acpi_handle host_handle = ACPI_HANDLE(ap->host->dev);
- for (i = 0; i < host->n_ports; i++) {
- struct ata_port *ap = host->ports[i];
- acpi_handle handle;
- struct ata_device *dev;
+ if (libata_noacpi || ap->flags & ATA_FLAG_ACPI_SATA || !host_handle)
+ return;
- if (!ap)
- continue;
+ ACPI_HANDLE_SET(&ap->tdev, acpi_get_child(host_handle, ap->port_no));
- handle = ata_ap_acpi_handle(ap);
- if (handle) {
- /* we might be on a docking station */
- register_hotplug_dock_device(handle,
- &ata_acpi_ap_dock_ops, ap,
- NULL, NULL);
- }
+ if (ata_acpi_gtm(ap, &ap->__acpi_init_gtm) == 0)
+ ap->pflags |= ATA_PFLAG_INIT_GTM_VALID;
- ata_for_each_dev(dev, &ap->link, ALL) {
- handle = ata_dev_acpi_handle(dev);
- if (!handle)
- continue;
+ /* we might be on a docking station */
+ register_hotplug_dock_device(ACPI_HANDLE(&ap->tdev),
+ &ata_acpi_ap_dock_ops, ap, NULL, NULL);
+}
- /* we might be on a docking station */
- register_hotplug_dock_device(handle,
- &ata_acpi_dev_dock_ops,
- dev, NULL, NULL);
- }
+void ata_acpi_bind_dev(struct ata_device *dev)
+{
+ struct ata_port *ap = dev->link->ap;
+ acpi_handle port_handle = ACPI_HANDLE(&ap->tdev);
+ acpi_handle host_handle = ACPI_HANDLE(ap->host->dev);
+ acpi_handle parent_handle;
+ u64 adr;
+
+ /*
+ * For both sata/pata devices, host handle is required.
+ * For pata device, port handle is also required.
+ */
+ if (libata_noacpi || !host_handle ||
+ (!(ap->flags & ATA_FLAG_ACPI_SATA) && !port_handle))
+ return;
+
+ if (ap->flags & ATA_FLAG_ACPI_SATA) {
+ if (!sata_pmp_attached(ap))
+ adr = SATA_ADR(ap->port_no, NO_PORT_MULT);
+ else
+ adr = SATA_ADR(ap->port_no, dev->link->pmp);
+ parent_handle = host_handle;
+ } else {
+ adr = dev->devno;
+ parent_handle = port_handle;
}
+
+ ACPI_HANDLE_SET(&dev->tdev, acpi_get_child(parent_handle, adr));
+
+ register_hotplug_dock_device(ata_dev_acpi_handle(dev),
+ &ata_acpi_dev_dock_ops, dev, NULL, NULL);
}
/**
@@ -270,18 +249,34 @@ void ata_acpi_dissociate(struct ata_host *host)
struct ata_port *ap = host->ports[i];
const struct ata_acpi_gtm *gtm = ata_acpi_init_gtm(ap);
- if (ata_ap_acpi_handle(ap) && gtm)
+ if (ACPI_HANDLE(&ap->tdev) && gtm)
ata_acpi_stm(ap, gtm);
}
}
-static int __ata_acpi_gtm(struct ata_port *ap, acpi_handle handle,
- struct ata_acpi_gtm *gtm)
+/**
+ * ata_acpi_gtm - execute _GTM
+ * @ap: target ATA port
+ * @gtm: out parameter for _GTM result
+ *
+ * Evaluate _GTM and store the result in @gtm.
+ *
+ * LOCKING:
+ * EH context.
+ *
+ * RETURNS:
+ * 0 on success, -ENOENT if _GTM doesn't exist, -errno on failure.
+ */
+int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *gtm)
{
struct acpi_buffer output = { .length = ACPI_ALLOCATE_BUFFER };
union acpi_object *out_obj;
acpi_status status;
int rc = 0;
+ acpi_handle handle = ACPI_HANDLE(&ap->tdev);
+
+ if (!handle)
+ return -EINVAL;
status = acpi_evaluate_object(handle, "_GTM", NULL, &output);
@@ -317,27 +312,6 @@ static int __ata_acpi_gtm(struct ata_port *ap, acpi_handle handle,
return rc;
}
-/**
- * ata_acpi_gtm - execute _GTM
- * @ap: target ATA port
- * @gtm: out parameter for _GTM result
- *
- * Evaluate _GTM and store the result in @gtm.
- *
- * LOCKING:
- * EH context.
- *
- * RETURNS:
- * 0 on success, -ENOENT if _GTM doesn't exist, -errno on failure.
- */
-int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *gtm)
-{
- if (ata_ap_acpi_handle(ap))
- return __ata_acpi_gtm(ap, ata_ap_acpi_handle(ap), gtm);
- else
- return -EINVAL;
-}
-
EXPORT_SYMBOL_GPL(ata_acpi_gtm);
/**
@@ -374,8 +348,8 @@ int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm)
input.count = 3;
input.pointer = in_params;
- status = acpi_evaluate_object(ata_ap_acpi_handle(ap), "_STM", &input,
- NULL);
+ status = acpi_evaluate_object(ACPI_HANDLE(&ap->tdev), "_STM",
+ &input, NULL);
if (status == AE_NOT_FOUND)
return -ENOENT;
@@ -850,7 +824,7 @@ void ata_acpi_on_resume(struct ata_port *ap)
const struct ata_acpi_gtm *gtm = ata_acpi_init_gtm(ap);
struct ata_device *dev;
- if (ata_ap_acpi_handle(ap) && gtm) {
+ if (ACPI_HANDLE(&ap->tdev) && gtm) {
/* _GTM valid */
/* restore timing parameters */
@@ -894,8 +868,7 @@ static int ata_acpi_choose_suspend_state(struct ata_device *dev, bool runtime)
d_max_in = ACPI_STATE_D3_HOT;
out:
- return acpi_pm_device_sleep_state(&dev->sdev->sdev_gendev,
- NULL, d_max_in);
+ return acpi_pm_device_sleep_state(&dev->tdev, NULL, d_max_in);
}
static void sata_acpi_set_state(struct ata_port *ap, pm_message_t state)
@@ -932,7 +905,7 @@ static void pata_acpi_set_state(struct ata_port *ap, pm_message_t state)
struct ata_device *dev;
acpi_handle port_handle;
- port_handle = ata_ap_acpi_handle(ap);
+ port_handle = ACPI_HANDLE(&ap->tdev);
if (!port_handle)
return;
@@ -1063,109 +1036,16 @@ void ata_acpi_on_disable(struct ata_device *dev)
ata_acpi_clear_gtf(dev);
}
-static int compat_pci_ata(struct ata_port *ap)
-{
- struct device *dev = ap->tdev.parent;
- struct pci_dev *pdev;
-
- if (!is_pci_dev(dev))
- return 0;
-
- pdev = to_pci_dev(dev);
-
- if ((pdev->class >> 8) != PCI_CLASS_STORAGE_SATA &&
- (pdev->class >> 8) != PCI_CLASS_STORAGE_IDE)
- return 0;
-
- return 1;
-}
-
-static int ata_acpi_bind_host(struct ata_port *ap, acpi_handle *handle)
-{
- if (libata_noacpi || ap->flags & ATA_FLAG_ACPI_SATA)
- return -ENODEV;
-
- *handle = acpi_get_child(DEVICE_ACPI_HANDLE(ap->tdev.parent),
- ap->port_no);
-
- if (!*handle)
- return -ENODEV;
-
- if (__ata_acpi_gtm(ap, *handle, &ap->__acpi_init_gtm) == 0)
- ap->pflags |= ATA_PFLAG_INIT_GTM_VALID;
-
- return 0;
-}
-
-static int ata_acpi_bind_device(struct ata_port *ap, struct scsi_device *sdev,
- acpi_handle *handle)
-{
- struct ata_device *ata_dev;
-
- if (ap->flags & ATA_FLAG_ACPI_SATA) {
- if (!sata_pmp_attached(ap))
- ata_dev = &ap->link.device[sdev->id];
- else
- ata_dev = &ap->pmp_link[sdev->channel].device[sdev->id];
- }
- else {
- ata_dev = &ap->link.device[sdev->id];
- }
-
- *handle = ata_dev_acpi_handle(ata_dev);
-
- if (!*handle)
- return -ENODEV;
-
- return 0;
-}
-
-static int is_ata_port(const struct device *dev)
-{
- return dev->type == &ata_port_type;
-}
-
-static struct ata_port *dev_to_ata_port(struct device *dev)
-{
- while (!is_ata_port(dev)) {
- if (!dev->parent)
- return NULL;
- dev = dev->parent;
- }
- return to_ata_port(dev);
-}
-
-static int ata_acpi_find_device(struct device *dev, acpi_handle *handle)
-{
- struct ata_port *ap = dev_to_ata_port(dev);
-
- if (!ap)
- return -ENODEV;
-
- if (!compat_pci_ata(ap))
- return -ENODEV;
-
- if (scsi_is_host_device(dev))
- return ata_acpi_bind_host(ap, handle);
- else if (scsi_is_sdev_device(dev)) {
- struct scsi_device *sdev = to_scsi_device(dev);
-
- return ata_acpi_bind_device(ap, sdev, handle);
- } else
- return -ENODEV;
-}
-
-static struct acpi_bus_type ata_acpi_bus = {
- .name = "ATA",
- .find_device = ata_acpi_find_device,
-};
-
-int ata_acpi_register(void)
+void ata_scsi_acpi_bind(struct ata_device *dev)
{
- return scsi_register_acpi_bus_type(&ata_acpi_bus);
+ acpi_handle handle = ata_dev_acpi_handle(dev);
+ if (handle)
+ acpi_dev_pm_add_dependent(handle, &dev->sdev->sdev_gendev);
}
-void ata_acpi_unregister(void)
+void ata_scsi_acpi_unbind(struct ata_device *dev)
{
- scsi_unregister_acpi_bus_type(&ata_acpi_bus);
+ acpi_handle handle = ata_dev_acpi_handle(dev);
+ if (handle)
+ acpi_dev_pm_remove_dependent(handle, &dev->sdev->sdev_gendev);
}
@@ -6150,8 +6150,6 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
if (rc)
goto err_tadd;
- ata_acpi_hotplug_init(host);
-
/* set cable, sata_spd_limit and report */
for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap = host->ports[i];
@@ -6632,8 +6630,6 @@ static int __init ata_init(void)
ata_parse_force_param();
- ata_acpi_register();
-
rc = ata_sff_init();
if (rc) {
kfree(ata_force_tbl);
@@ -6660,7 +6656,6 @@ static void __exit ata_exit(void)
ata_release_transport(ata_scsi_transport_template);
libata_transport_exit();
ata_sff_exit();
- ata_acpi_unregister();
kfree(ata_force_tbl);
}
@@ -49,7 +49,6 @@
#include <linux/hdreg.h>
#include <linux/uaccess.h>
#include <linux/suspend.h>
-#include <linux/pm_qos.h>
#include <asm/unaligned.h>
#include "libata.h"
@@ -3667,9 +3666,7 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync)
if (!IS_ERR(sdev)) {
dev->sdev = sdev;
scsi_device_put(sdev);
- if (zpodd_dev_enabled(dev))
- dev_pm_qos_expose_flags(
- &sdev->sdev_gendev, 0);
+ ata_scsi_acpi_bind(dev);
} else {
dev->sdev = NULL;
}
@@ -3757,6 +3754,8 @@ static void ata_scsi_remove_dev(struct ata_device *dev)
struct scsi_device *sdev;
unsigned long flags;
+ ata_scsi_acpi_unbind(dev);
+
/* Alas, we need to grab scan_mutex to ensure SCSI device
* state doesn't change underneath us and thus
* scsi_device_get() always succeeds. The mutex locking can
@@ -3766,9 +3765,6 @@ static void ata_scsi_remove_dev(struct ata_device *dev)
mutex_lock(&ap->scsi_host->scan_mutex);
spin_lock_irqsave(ap->lock, flags);
- if (zpodd_dev_enabled(dev))
- zpodd_exit(dev);
-
/* clearing dev->sdev is protected by host lock */
sdev = dev->sdev;
dev->sdev = NULL;
@@ -3818,6 +3814,9 @@ static void ata_scsi_handle_link_detach(struct ata_link *link)
dev->flags &= ~ATA_DFLAG_DETACHED;
spin_unlock_irqrestore(ap->lock, flags);
+ if (zpodd_dev_enabled(dev))
+ zpodd_exit(dev);
+
ata_scsi_remove_dev(dev);
}
}
@@ -287,6 +287,7 @@ int ata_tport_add(struct device *parent,
dev->release = ata_tport_release;
dev_set_name(dev, "ata%d", ap->print_id);
transport_setup_device(dev);
+ ata_acpi_bind_port(ap);
error = device_add(dev);
if (error) {
goto tport_err;
@@ -644,6 +645,7 @@ static int ata_tdev_add(struct ata_device *ata_dev)
dev_set_name(dev, "dev%d.%d.0", ap->print_id, link->pmp);
transport_setup_device(dev);
+ ata_acpi_bind_dev(ata_dev);
error = device_add(dev);
if (error) {
ata_tdev_free(ata_dev);
@@ -2,6 +2,7 @@
#include <linux/cdrom.h>
#include <linux/pm_runtime.h>
#include <linux/module.h>
+#include <linux/pm_qos.h>
#include <scsi/scsi_device.h>
#include "libata.h"
@@ -190,8 +191,8 @@ void zpodd_enable_run_wake(struct ata_device *dev)
sdev_disable_disk_events(dev->sdev);
zpodd->powered_off = true;
- device_set_run_wake(&dev->sdev->sdev_gendev, true);
- acpi_pm_device_run_wake(&dev->sdev->sdev_gendev, true);
+ device_set_run_wake(&dev->tdev, true);
+ acpi_pm_device_run_wake(&dev->tdev, true);
}
/* Disable runtime wake capability if it is enabled */
@@ -200,8 +201,8 @@ void zpodd_disable_run_wake(struct ata_device *dev)
struct zpodd *zpodd = dev->zpodd;
if (zpodd->powered_off) {
- acpi_pm_device_run_wake(&dev->sdev->sdev_gendev, false);
- device_set_run_wake(&dev->sdev->sdev_gendev, false);
+ acpi_pm_device_run_wake(&dev->tdev, false);
+ device_set_run_wake(&dev->tdev, false);
}
}
@@ -262,7 +263,7 @@ static void ata_acpi_add_pm_notifier(struct ata_device *dev)
static void ata_acpi_remove_pm_notifier(struct ata_device *dev)
{
- acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->sdev->sdev_gendev);
+ acpi_handle handle = ata_dev_acpi_handle(dev);
acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY, zpodd_wake_dev);
}
@@ -290,6 +291,7 @@ void zpodd_init(struct ata_device *dev)
ata_acpi_add_pm_notifier(dev);
zpodd->dev = dev;
dev->zpodd = zpodd;
+ dev_pm_qos_expose_flags(&dev->tdev, 0);
}
void zpodd_exit(struct ata_device *dev)
@@ -118,9 +118,11 @@ extern void ata_acpi_on_resume(struct ata_port *ap);
extern int ata_acpi_on_devcfg(struct ata_device *dev);
extern void ata_acpi_on_disable(struct ata_device *dev);
extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state);
-extern int ata_acpi_register(void);
-extern void ata_acpi_unregister(void);
-extern void ata_acpi_hotplug_init(struct ata_host *host);
+extern void ata_acpi_bind_port(struct ata_port *ap);
+extern void ata_acpi_bind_dev(struct ata_device *dev);
+extern acpi_handle ata_dev_acpi_handle(struct ata_device *dev);
+extern void ata_scsi_acpi_bind(struct ata_device *dev);
+extern void ata_scsi_acpi_unbind(struct ata_device *dev);
#else
static inline void ata_acpi_dissociate(struct ata_host *host) { }
static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
@@ -129,9 +131,11 @@ static inline int ata_acpi_on_devcfg(struct ata_device *dev) { return 0; }
static inline void ata_acpi_on_disable(struct ata_device *dev) { }
static inline void ata_acpi_set_state(struct ata_port *ap,
pm_message_t state) { }
-static inline int ata_acpi_register(void) { return 0; }
-static inline void ata_acpi_unregister(void) { }
-static inline void ata_acpi_hotplug_init(struct ata_host *host) {}
+static inline void ata_acpi_bind_port(struct ata_port *ap) {}
+static inline void ata_acpi_bind_dev(struct ata_device *dev) {}
+static inline acpi_handle ata_dev_acpi_handle(struct ata_device *dev) { return NULL; }
+static inline void ata_scsi_acpi_bind(struct ata_device *dev) {}
+static inline void ata_scsi_acpi_unbind(struct ata_device *dev) {}
#endif
/* libata-scsi.c */
@@ -39,7 +39,7 @@ static int pacpi_pre_reset(struct ata_link *link, unsigned long deadline)
{
struct ata_port *ap = link->ap;
struct pata_acpi *acpi = ap->private_data;
- if (ata_ap_acpi_handle(ap) == NULL || ata_acpi_gtm(ap, &acpi->gtm) < 0)
+ if (ACPI_HANDLE(&ap->tdev) == NULL || ata_acpi_gtm(ap, &acpi->gtm) < 0)
return -ENODEV;
return ata_sff_prereset(link, deadline);
@@ -195,7 +195,7 @@ static int pacpi_port_start(struct ata_port *ap)
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
struct pata_acpi *acpi;
- if (ata_ap_acpi_handle(ap) == NULL)
+ if (ACPI_HANDLE(&ap->tdev) == NULL)
return -ENODEV;
acpi = ap->private_data = devm_kzalloc(&pdev->dev, sizeof(struct pata_acpi), GFP_KERNEL);
@@ -68,28 +68,6 @@ static struct scsi_host_sg_pool scsi_sg_pools[] = {
struct kmem_cache *scsi_sdb_cache;
-#ifdef CONFIG_ACPI
-#include <acpi/acpi_bus.h>
-
-static bool acpi_scsi_bus_match(struct device *dev)
-{
- return dev->bus == &scsi_bus_type;
-}
-
-int scsi_register_acpi_bus_type(struct acpi_bus_type *bus)
-{
- bus->match = acpi_scsi_bus_match;
- return register_acpi_bus_type(bus);
-}
-EXPORT_SYMBOL_GPL(scsi_register_acpi_bus_type);
-
-void scsi_unregister_acpi_bus_type(struct acpi_bus_type *bus)
-{
- unregister_acpi_bus_type(bus);
-}
-EXPORT_SYMBOL_GPL(scsi_unregister_acpi_bus_type);
-#endif
-
/*
* When to reinvoke queueing after a resource shortage. It's 3 msecs to
* not change behaviour from the previous unplug mechanism, experimentation
@@ -1244,8 +1244,6 @@ int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
const struct ata_acpi_gtm *gtm);
-acpi_handle ata_ap_acpi_handle(struct ata_port *ap);
-acpi_handle ata_dev_acpi_handle(struct ata_device *dev);
int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
#else
static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)