* Copyright (C) 2006 Randy Dunlap
*/
+#include <linux/module.h>
#include <linux/ata.h>
#include <linux/delay.h>
#include <linux/device.h>
#include "libata.h"
#include <acpi/acpi_bus.h>
-#include <acpi/acnames.h>
-#include <acpi/acnamesp.h>
-#include <acpi/acparser.h>
-#include <acpi/acexcep.h>
-#include <acpi/acmacros.h>
-#include <acpi/actypes.h>
+
+unsigned int ata_acpi_gtf_filter = ATA_ACPI_FILTER_DEFAULT;
+module_param_named(acpi_gtf_filter, ata_acpi_gtf_filter, int, 0644);
+MODULE_PARM_DESC(acpi_gtf_filter, "filter mask for ACPI _GTF commands, set to filter out (0x1=set xfermode, 0x2=lock/freeze lock, 0x4=DIPM, 0x8=FPDMA non-zero offset, 0x10=FPDMA DMA Setup FIS auto-activate)");
#define NO_PORT_MULT 0xffff
#define SATA_ADR(root, pmp) (((root) << 16) | (pmp))
{
WARN_ON(!(ap->flags & ATA_FLAG_ACPI_SATA));
- if (!ap->nr_pmp_links) {
+ if (!sata_pmp_attached(ap)) {
acpi_integer adr = SATA_ADR(ap->port_no, NO_PORT_MULT);
ap->link.device->acpi_handle =
ap->link.device->acpi_handle = NULL;
- ata_port_for_each_link(link, ap) {
+ ata_for_each_link(link, ap, EDGE) {
acpi_integer adr = SATA_ADR(ap->port_no, link->pmp);
link->device->acpi_handle =
ap->pflags |= ATA_PFLAG_INIT_GTM_VALID;
}
-static void ata_acpi_handle_hotplug(struct ata_port *ap, struct kobject *kobj,
+/* @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)
+{
+ if (dev)
+ dev->flags |= ATA_DFLAG_DETACH;
+ else {
+ struct ata_link *tlink;
+ struct ata_device *tdev;
+
+ ata_for_each_link(tlink, ap, EDGE)
+ ata_for_each_dev(tdev, tlink, ALL)
+ tdev->flags |= ATA_DFLAG_DETACH;
+ }
+
+ ata_port_schedule_eh(ap);
+}
+
+/**
+ * ata_acpi_handle_hotplug - ACPI event handler backend
+ * @ap: ATA port ACPI event occurred
+ * @dev: ATA device ACPI event occurred (can be NULL)
+ * @event: ACPI event which occurred
+ *
+ * All ACPI bay / device realted events end up in this function. If
+ * the event is port-wide @dev is NULL. If the event is specific to a
+ * device, @dev points to it.
+ *
+ * Hotplug (as opposed to unplug) notification is always handled as
+ * port-wide while unplug only kills the target device on device-wide
+ * event.
+ *
+ * LOCKING:
+ * ACPI notify handler context. May sleep.
+ */
+static void ata_acpi_handle_hotplug(struct ata_port *ap, struct ata_device *dev,
u32 event)
{
- char event_string[12];
- char *envp[] = { event_string, NULL };
struct ata_eh_info *ehi = &ap->link.eh_info;
-
- if (event == 0 || event == 1) {
- unsigned long flags;
- spin_lock_irqsave(ap->lock, flags);
- ata_ehi_clear_desc(ehi);
- ata_ehi_push_desc(ehi, "ACPI event");
- ata_ehi_hotplugged(ehi);
- ata_port_freeze(ap);
- spin_unlock_irqrestore(ap->lock, flags);
+ int wait = 0;
+ unsigned long flags;
+ acpi_handle handle;
+
+ if (dev)
+ handle = dev->acpi_handle;
+ else
+ handle = ap->acpi_handle;
+
+ spin_lock_irqsave(ap->lock, flags);
+ /*
+ * When dock driver calls into the routine, it will always use
+ * ACPI_NOTIFY_BUS_CHECK/ACPI_NOTIFY_DEVICE_CHECK for add and
+ * ACPI_NOTIFY_EJECT_REQUEST for remove
+ */
+ switch (event) {
+ case ACPI_NOTIFY_BUS_CHECK:
+ case ACPI_NOTIFY_DEVICE_CHECK:
+ ata_ehi_push_desc(ehi, "ACPI event");
+
+ ata_ehi_hotplugged(ehi);
+ ata_port_freeze(ap);
+ break;
+ case ACPI_NOTIFY_EJECT_REQUEST:
+ ata_ehi_push_desc(ehi, "ACPI event");
+
+ ata_acpi_detach_device(ap, dev);
+ wait = 1;
+ break;
}
- if (kobj) {
- sprintf(event_string, "BAY_EVENT=%d", event);
- kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
- }
+ spin_unlock_irqrestore(ap->lock, flags);
+
+ if (wait)
+ ata_port_wait_eh(ap);
}
-static void ata_acpi_dev_notify(acpi_handle handle, u32 event, void *data)
+static void ata_acpi_dev_notify_dock(acpi_handle handle, u32 event, void *data)
{
struct ata_device *dev = data;
+
+ ata_acpi_handle_hotplug(dev->link->ap, dev, event);
+}
+
+static void ata_acpi_ap_notify_dock(acpi_handle handle, u32 event, void *data)
+{
+ struct ata_port *ap = data;
+
+ ata_acpi_handle_hotplug(ap, NULL, event);
+}
+
+static void ata_acpi_uevent(struct ata_port *ap, struct ata_device *dev,
+ u32 event)
+{
struct kobject *kobj = NULL;
+ char event_string[20];
+ char *envp[] = { event_string, NULL };
- if (dev->sdev)
- kobj = &dev->sdev->sdev_gendev.kobj;
+ if (dev) {
+ if (dev->sdev)
+ kobj = &dev->sdev->sdev_gendev.kobj;
+ } else
+ kobj = &ap->dev->kobj;
- ata_acpi_handle_hotplug(dev->link->ap, kobj, event);
+ if (kobj) {
+ snprintf(event_string, 20, "BAY_EVENT=%d", event);
+ kobject_uevent_env(kobj, KOBJ_CHANGE, envp);
+ }
}
-static void ata_acpi_ap_notify(acpi_handle handle, u32 event, void *data)
+static void ata_acpi_ap_uevent(acpi_handle handle, u32 event, void *data)
{
- struct ata_port *ap = data;
+ ata_acpi_uevent(data, NULL, event);
+}
- ata_acpi_handle_hotplug(ap, &ap->dev->kobj, event);
+static void ata_acpi_dev_uevent(acpi_handle handle, u32 event, void *data)
+{
+ struct ata_device *dev = data;
+ ata_acpi_uevent(dev->link->ap, dev, event);
}
+static struct acpi_dock_ops ata_acpi_dev_dock_ops = {
+ .handler = ata_acpi_dev_notify_dock,
+ .uevent = ata_acpi_dev_uevent,
+};
+
+static struct acpi_dock_ops ata_acpi_ap_dock_ops = {
+ .handler = ata_acpi_ap_notify_dock,
+ .uevent = ata_acpi_ap_uevent,
+};
+
/**
* ata_acpi_associate - associate ATA host with ACPI objects
* @host: target ATA host
else
ata_acpi_associate_ide_port(ap);
- if (ap->acpi_handle)
- acpi_install_notify_handler (ap->acpi_handle,
- ACPI_SYSTEM_NOTIFY,
- ata_acpi_ap_notify,
- ap);
+ if (ap->acpi_handle) {
+ /* we might be on a docking station */
+ register_hotplug_dock_device(ap->acpi_handle,
+ &ata_acpi_ap_dock_ops, ap);
+ }
for (j = 0; j < ata_link_max_devices(&ap->link); j++) {
struct ata_device *dev = &ap->link.device[j];
- if (dev->acpi_handle)
- acpi_install_notify_handler (dev->acpi_handle,
- ACPI_SYSTEM_NOTIFY,
- ata_acpi_dev_notify,
- dev);
+ if (dev->acpi_handle) {
+ /* we might be on a docking station */
+ register_hotplug_dock_device(dev->acpi_handle,
+ &ata_acpi_dev_dock_ops, dev);
+ }
}
}
}
if (ata_msg_probe(ap))
ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER: port#: %d\n",
- __FUNCTION__, ap->port_no);
+ __func__, ap->port_no);
/* _GTF has no input parameters */
status = acpi_evaluate_object(dev->acpi_handle, "_GTF", NULL, &output);
if (ata_msg_probe(ap))
ata_dev_printk(dev, KERN_DEBUG, "%s: Run _GTF: "
"length or ptr is NULL (0x%llx, 0x%p)\n",
- __FUNCTION__,
+ __func__,
(unsigned long long)output.length,
output.pointer);
rc = -EINVAL;
if (ata_msg_probe(ap))
ata_dev_printk(dev, KERN_DEBUG,
"%s: returning gtf=%p, gtf_count=%d\n",
- __FUNCTION__, *gtf, rc);
+ __func__, *gtf, rc);
}
return rc;
}
/**
+ * ata_acpi_gtm_xfermode - determine xfermode from GTM parameter
+ * @dev: target device
+ * @gtm: GTM parameter to use
+ *
+ * Determine xfermask for @dev from @gtm.
+ *
+ * LOCKING:
+ * None.
+ *
+ * RETURNS:
+ * Determined xfermask.
+ */
+unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
+ const struct ata_acpi_gtm *gtm)
+{
+ unsigned long xfer_mask = 0;
+ unsigned int type;
+ int unit;
+ u8 mode;
+
+ /* we always use the 0 slot for crap hardware */
+ unit = dev->devno;
+ if (!(gtm->flags & 0x10))
+ unit = 0;
+
+ /* PIO */
+ mode = ata_timing_cycle2mode(ATA_SHIFT_PIO, gtm->drive[unit].pio);
+ xfer_mask |= ata_xfer_mode2mask(mode);
+
+ /* See if we have MWDMA or UDMA data. We don't bother with
+ * MWDMA if UDMA is available as this means the BIOS set UDMA
+ * and our error changedown if it works is UDMA to PIO anyway.
+ */
+ if (!(gtm->flags & (1 << (2 * unit))))
+ type = ATA_SHIFT_MWDMA;
+ else
+ type = ATA_SHIFT_UDMA;
+
+ mode = ata_timing_cycle2mode(type, gtm->drive[unit].dma);
+ xfer_mask |= ata_xfer_mode2mask(mode);
+
+ return xfer_mask;
+}
+EXPORT_SYMBOL_GPL(ata_acpi_gtm_xfermask);
+
+/**
* ata_acpi_cbl_80wire - Check for 80 wire cable
* @ap: Port to check
+ * @gtm: GTM data to use
*
- * Return 1 if the ACPI mode data for this port indicates the BIOS selected
- * an 80wire mode.
+ * Return 1 if the @gtm indicates the BIOS selected an 80wire mode.
*/
-
-int ata_acpi_cbl_80wire(struct ata_port *ap)
+int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm)
{
- const struct ata_acpi_gtm *gtm = ata_acpi_init_gtm(ap);
- int valid = 0;
+ struct ata_device *dev;
- if (!gtm)
- return 0;
+ ata_for_each_dev(dev, &ap->link, ENABLED) {
+ unsigned long xfer_mask, udma_mask;
+
+ xfer_mask = ata_acpi_gtm_xfermask(dev, gtm);
+ ata_unpack_xfermask(xfer_mask, NULL, NULL, &udma_mask);
+
+ if (udma_mask & ~ATA_UDMA_MASK_40C)
+ return 1;
+ }
- /* Split timing, DMA enabled */
- if ((gtm->flags & 0x11) == 0x11 && gtm->drive[0].dma < 55)
- valid |= 1;
- if ((gtm->flags & 0x14) == 0x14 && gtm->drive[1].dma < 55)
- valid |= 2;
- /* Shared timing, DMA enabled */
- if ((gtm->flags & 0x11) == 0x01 && gtm->drive[0].dma < 55)
- valid |= 1;
- if ((gtm->flags & 0x14) == 0x04 && gtm->drive[0].dma < 55)
- valid |= 2;
-
- /* Drive check */
- if ((valid & 1) && ata_dev_enabled(&ap->link.device[0]))
- return 1;
- if ((valid & 2) && ata_dev_enabled(&ap->link.device[1]))
- return 1;
return 0;
}
-
EXPORT_SYMBOL_GPL(ata_acpi_cbl_80wire);
+static void ata_acpi_gtf_to_tf(struct ata_device *dev,
+ const struct ata_acpi_gtf *gtf,
+ struct ata_taskfile *tf)
+{
+ ata_tf_init(dev, tf);
+
+ tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
+ tf->protocol = ATA_PROT_NODATA;
+ tf->feature = gtf->tf[0]; /* 0x1f1 */
+ tf->nsect = gtf->tf[1]; /* 0x1f2 */
+ tf->lbal = gtf->tf[2]; /* 0x1f3 */
+ tf->lbam = gtf->tf[3]; /* 0x1f4 */
+ tf->lbah = gtf->tf[4]; /* 0x1f5 */
+ tf->device = gtf->tf[5]; /* 0x1f6 */
+ tf->command = gtf->tf[6]; /* 0x1f7 */
+}
+
+static int ata_acpi_filter_tf(struct ata_device *dev,
+ const struct ata_taskfile *tf,
+ const struct ata_taskfile *ptf)
+{
+ if (dev->gtf_filter & ATA_ACPI_FILTER_SETXFER) {
+ /* libata doesn't use ACPI to configure transfer mode.
+ * It will only confuse device configuration. Skip.
+ */
+ if (tf->command == ATA_CMD_SET_FEATURES &&
+ tf->feature == SETFEATURES_XFER)
+ return 1;
+ }
+
+ if (dev->gtf_filter & ATA_ACPI_FILTER_LOCK) {
+ /* BIOS writers, sorry but we don't wanna lock
+ * features unless the user explicitly said so.
+ */
+
+ /* DEVICE CONFIGURATION FREEZE LOCK */
+ if (tf->command == ATA_CMD_CONF_OVERLAY &&
+ tf->feature == ATA_DCO_FREEZE_LOCK)
+ return 1;
+
+ /* SECURITY FREEZE LOCK */
+ if (tf->command == ATA_CMD_SEC_FREEZE_LOCK)
+ return 1;
+
+ /* SET MAX LOCK and SET MAX FREEZE LOCK */
+ if ((!ptf || ptf->command != ATA_CMD_READ_NATIVE_MAX) &&
+ tf->command == ATA_CMD_SET_MAX &&
+ (tf->feature == ATA_SET_MAX_LOCK ||
+ tf->feature == ATA_SET_MAX_FREEZE_LOCK))
+ return 1;
+ }
+
+ if (tf->command == ATA_CMD_SET_FEATURES &&
+ tf->feature == SETFEATURES_SATA_ENABLE) {
+ /* inhibit enabling DIPM */
+ if (dev->gtf_filter & ATA_ACPI_FILTER_DIPM &&
+ tf->nsect == SATA_DIPM)
+ return 1;
+
+ /* inhibit FPDMA non-zero offset */
+ if (dev->gtf_filter & ATA_ACPI_FILTER_FPDMA_OFFSET &&
+ (tf->nsect == SATA_FPDMA_OFFSET ||
+ tf->nsect == SATA_FPDMA_IN_ORDER))
+ return 1;
+
+ /* inhibit FPDMA auto activation */
+ if (dev->gtf_filter & ATA_ACPI_FILTER_FPDMA_AA &&
+ tf->nsect == SATA_FPDMA_AA)
+ return 1;
+ }
+
+ return 0;
+}
+
/**
- * taskfile_load_raw - send taskfile registers to host controller
+ * ata_acpi_run_tf - send taskfile registers to host controller
* @dev: target ATA device
* @gtf: raw ATA taskfile register set (0x1f1 - 0x1f7)
*
* EH context.
*
* RETURNS:
- * 0 on success, -errno on failure.
+ * 1 if command is executed successfully. 0 if ignored, rejected or
+ * filtered out, -errno on other errors.
*/
-static int taskfile_load_raw(struct ata_device *dev,
- const struct ata_acpi_gtf *gtf)
+static int ata_acpi_run_tf(struct ata_device *dev,
+ const struct ata_acpi_gtf *gtf,
+ const struct ata_acpi_gtf *prev_gtf)
{
- struct ata_port *ap = dev->link->ap;
- struct ata_taskfile tf, rtf;
+ struct ata_taskfile *pptf = NULL;
+ struct ata_taskfile tf, ptf, rtf;
unsigned int err_mask;
+ const char *level;
+ const char *descr;
+ char msg[60];
+ int rc;
if ((gtf->tf[0] == 0) && (gtf->tf[1] == 0) && (gtf->tf[2] == 0)
&& (gtf->tf[3] == 0) && (gtf->tf[4] == 0) && (gtf->tf[5] == 0)
&& (gtf->tf[6] == 0))
return 0;
- ata_tf_init(dev, &tf);
-
- /* convert gtf to tf */
- tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; /* TBD */
- tf.protocol = ATA_PROT_NODATA;
- tf.feature = gtf->tf[0]; /* 0x1f1 */
- tf.nsect = gtf->tf[1]; /* 0x1f2 */
- tf.lbal = gtf->tf[2]; /* 0x1f3 */
- tf.lbam = gtf->tf[3]; /* 0x1f4 */
- tf.lbah = gtf->tf[4]; /* 0x1f5 */
- tf.device = gtf->tf[5]; /* 0x1f6 */
- tf.command = gtf->tf[6]; /* 0x1f7 */
+ ata_acpi_gtf_to_tf(dev, gtf, &tf);
+ if (prev_gtf) {
+ ata_acpi_gtf_to_tf(dev, prev_gtf, &ptf);
+ pptf = &ptf;
+ }
- if (ata_msg_probe(ap))
- ata_dev_printk(dev, KERN_DEBUG, "executing ACPI cmd "
- "%02x/%02x:%02x:%02x:%02x:%02x:%02x\n",
- tf.command, tf.feature, tf.nsect,
- tf.lbal, tf.lbam, tf.lbah, tf.device);
-
- rtf = tf;
- err_mask = ata_exec_internal(dev, &rtf, NULL, DMA_NONE, NULL, 0, 0);
- if (err_mask) {
- ata_dev_printk(dev, KERN_ERR,
- "ACPI cmd %02x/%02x:%02x:%02x:%02x:%02x:%02x failed "
- "(Emask=0x%x Stat=0x%02x Err=0x%02x)\n",
- tf.command, tf.feature, tf.nsect, tf.lbal, tf.lbam,
- tf.lbah, tf.device, err_mask, rtf.command, rtf.feature);
- return -EIO;
+ if (!ata_acpi_filter_tf(dev, &tf, pptf)) {
+ rtf = tf;
+ err_mask = ata_exec_internal(dev, &rtf, NULL,
+ DMA_NONE, NULL, 0, 0);
+
+ switch (err_mask) {
+ case 0:
+ level = KERN_DEBUG;
+ snprintf(msg, sizeof(msg), "succeeded");
+ rc = 1;
+ break;
+
+ case AC_ERR_DEV:
+ level = KERN_INFO;
+ snprintf(msg, sizeof(msg),
+ "rejected by device (Stat=0x%02x Err=0x%02x)",
+ rtf.command, rtf.feature);
+ rc = 0;
+ break;
+
+ default:
+ level = KERN_ERR;
+ snprintf(msg, sizeof(msg),
+ "failed (Emask=0x%x Stat=0x%02x Err=0x%02x)",
+ err_mask, rtf.command, rtf.feature);
+ rc = -EIO;
+ break;
+ }
+ } else {
+ level = KERN_INFO;
+ snprintf(msg, sizeof(msg), "filtered out");
+ rc = 0;
}
+ descr = ata_get_cmd_descript(tf.command);
- return 0;
+ ata_dev_printk(dev, level,
+ "ACPI cmd %02x/%02x:%02x:%02x:%02x:%02x:%02x (%s) %s\n",
+ tf.command, tf.feature, tf.nsect, tf.lbal,
+ tf.lbam, tf.lbah, tf.device,
+ (descr ? descr : "unknown"), msg);
+
+ return rc;
}
/**
* ata_acpi_exec_tfs - get then write drive taskfile settings
* @dev: target ATA device
- * @nr_executed: out paramter for the number of executed commands
+ * @nr_executed: out parameter for the number of executed commands
*
- * Evaluate _GTF and excute returned taskfiles.
+ * Evaluate _GTF and execute returned taskfiles.
*
* LOCKING:
* EH context.
*/
static int ata_acpi_exec_tfs(struct ata_device *dev, int *nr_executed)
{
- struct ata_acpi_gtf *gtf = NULL;
+ struct ata_acpi_gtf *gtf = NULL, *pgtf = NULL;
int gtf_count, i, rc;
/* get taskfiles */
gtf_count = rc;
/* execute them */
- for (i = 0, rc = 0; i < gtf_count; i++) {
- int tmp;
-
- /* ACPI errors are eventually ignored. Run till the
- * end even after errors.
- */
- tmp = taskfile_load_raw(dev, gtf++);
- if (!rc)
- rc = tmp;
-
- (*nr_executed)++;
+ for (i = 0; i < gtf_count; i++, gtf++) {
+ rc = ata_acpi_run_tf(dev, gtf, pgtf);
+ if (rc < 0)
+ break;
+ if (rc) {
+ (*nr_executed)++;
+ pgtf = gtf;
+ }
}
ata_acpi_clear_gtf(dev);
- return rc;
+ if (rc < 0)
+ return rc;
+ return 0;
}
/**
* EH context.
*
* RETURNS:
- * 0 on success, -errno on failure.
+ * 0 on success, -ENOENT if _SDD doesn't exist, -errno on failure.
*/
static int ata_acpi_push_id(struct ata_device *dev)
{
struct ata_port *ap = dev->link->ap;
- int err;
acpi_status status;
struct acpi_object_list input;
union acpi_object in_params[1];
if (ata_msg_probe(ap))
ata_dev_printk(dev, KERN_DEBUG, "%s: ix = %d, port#: %d\n",
- __FUNCTION__, dev->devno, ap->port_no);
+ __func__, dev->devno, ap->port_no);
/* Give the drive Identify data to the drive via the _SDD method */
/* _SDD: set up input parameters */
status = acpi_evaluate_object(dev->acpi_handle, "_SDD", &input, NULL);
swap_buf_le16(dev->id, ATA_ID_WORDS);
- err = ACPI_FAILURE(status) ? -EIO : 0;
- if (err < 0)
+ if (status == AE_NOT_FOUND)
+ return -ENOENT;
+
+ if (ACPI_FAILURE(status)) {
ata_dev_printk(dev, KERN_WARNING,
"ACPI _SDD failed (AE 0x%x)\n", status);
+ return -EIO;
+ }
- return err;
+ return 0;
}
/**
* use values set by _STM. Cache _GTF result and
* schedule _GTF.
*/
- ata_link_for_each_dev(dev, &ap->link) {
+ ata_for_each_dev(dev, &ap->link, ALL) {
ata_acpi_clear_gtf(dev);
- if (ata_dev_get_GTF(dev, NULL) >= 0)
+ if (ata_dev_enabled(dev) &&
+ ata_dev_get_GTF(dev, NULL) >= 0)
dev->flags |= ATA_DFLAG_ACPI_PENDING;
}
} else {
* there's no reason to evaluate IDE _GTF early
* without _STM. Clear cache and schedule _GTF.
*/
- ata_link_for_each_dev(dev, &ap->link) {
+ ata_for_each_dev(dev, &ap->link, ALL) {
ata_acpi_clear_gtf(dev);
- dev->flags |= ATA_DFLAG_ACPI_PENDING;
+ if (ata_dev_enabled(dev))
+ dev->flags |= ATA_DFLAG_ACPI_PENDING;
}
}
}
/**
+ * ata_acpi_set_state - set the port power state
+ * @ap: target ATA port
+ * @state: state, on/off
+ *
+ * This function executes the _PS0/_PS3 ACPI method to set the power state.
+ * ACPI spec requires _PS0 when IDE power on and _PS3 when power off
+ */
+void ata_acpi_set_state(struct ata_port *ap, pm_message_t state)
+{
+ struct ata_device *dev;
+
+ if (!ap->acpi_handle || (ap->flags & ATA_FLAG_ACPI_SATA))
+ return;
+
+ /* channel first and then drives for power on and vica versa
+ for power off */
+ if (state.event == PM_EVENT_ON)
+ acpi_bus_set_power(ap->acpi_handle, ACPI_STATE_D0);
+
+ ata_for_each_dev(dev, &ap->link, ENABLED) {
+ if (dev->acpi_handle)
+ acpi_bus_set_power(dev->acpi_handle,
+ state.event == PM_EVENT_ON ?
+ ACPI_STATE_D0 : ACPI_STATE_D3);
+ }
+ if (state.event != PM_EVENT_ON)
+ acpi_bus_set_power(ap->acpi_handle, ACPI_STATE_D3);
+}
+
+/**
* ata_acpi_on_devcfg - ATA ACPI hook called on device donfiguration
* @dev: target ATA device
*
/* do _SDD if SATA */
if (acpi_sata) {
rc = ata_acpi_push_id(dev);
- if (rc)
+ if (rc && rc != -ENOENT)
goto acpi_err;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff