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);
dev->gtf_cache = NULL;
}
-/**
- * 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)
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)
.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);
}
/**
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);
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);
/**
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;
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 */
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)
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;
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);
}
projects / ~andy / linux / blobdiff