On Tue, Mar 27, 2007 at 12:39:06AM +0100, Alan Cox wrote:
> > + acpidata = kzalloc(sizeof(struct ata_acpi_port_link), GFP_KERNEL);
> > + acpidata->is_pata = pata;
>
> Out of memory -> NULL - > OOps *bang*
>
>
> Looks ok but for the memory handling now
Ok. Only changes in this one are checking the return from kzalloc and
bailing appropriately.
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 0bd4789..8fab5fd 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -291,13 +291,12 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,
unsigned long *obj_loc)
{
acpi_status status;
- acpi_handle dev_handle = NULL;
- acpi_handle chan_handle, drive_handle;
- acpi_integer pcidevfn = 0;
+ acpi_handle drive_handle;
u32 dev_adr;
struct acpi_buffer output;
union acpi_object *out_obj;
struct device *dev = ap->host->dev;
+ struct ata_acpi_port_link *acpidata = ap->acpi_port_link;
struct ata_device *atadev = &ap->device[ix];
int err = -ENODEV;
@@ -321,47 +320,12 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,
goto out;
}
- /* Don't continue if device has no _ADR method.
- * _GTF is intended for known motherboard devices. */
- if (!(ap->cbl == ATA_CBL_SATA)) {
- err = pata_get_dev_handle(dev, &dev_handle, &pcidevfn);
- if (err < 0) {
- if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
- "%s: pata_get_dev_handle failed (%d)\n",
- __FUNCTION__, err);
- goto out;
- }
- } else {
- err = sata_get_dev_handle(dev, &dev_handle, &pcidevfn);
- if (err < 0) {
- if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
- "%s: sata_get_dev_handle failed (%d\n",
- __FUNCTION__, err);
- goto out;
- }
- }
-
/* Get this drive's _ADR info. if not already known. */
if (!atadev->obj_handle) {
- if (!(ap->cbl == ATA_CBL_SATA)) {
- /* get child objects of dev_handle == channel objects,
- * + _their_ children == drive objects */
- /* channel is ap->port_no */
- chan_handle = acpi_get_child(dev_handle,
- ap->port_no);
- if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
- "%s: chan adr=%d: chan_handle=0x%p\n",
- __FUNCTION__, ap->port_no,
- chan_handle);
- if (!chan_handle) {
- err = -ENODEV;
- goto out;
- }
+ if (acpidata->is_pata) {
/* TBD: could also check ACPI object VALID bits */
- drive_handle = acpi_get_child(chan_handle, ix);
+ drive_handle =
+ acpi_get_child(acpidata->handle, ix);
if (!drive_handle) {
err = -ENODEV;
goto out;
@@ -370,8 +334,9 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,
atadev->obj_handle = drive_handle;
} else { /* for SATA mode */
dev_adr = SATA_ADR_RSVD;
- err = get_sata_adr(dev, dev_handle, pcidevfn, 0,
- ap, atadev, &dev_adr);
+ err = get_sata_adr(dev, acpidata->handle,
+ acpidata->devfn, 0, ap, atadev,
+ &dev_adr);
}
if (err < 0 || dev_adr == SATA_ADR_RSVD ||
!atadev->obj_handle) {
@@ -526,12 +491,13 @@ static int do_drive_set_taskfiles(struct ata_port *ap,
int gtf_count = gtf_length / REGS_PER_GTF;
int ix;
struct taskfile_array *gtf;
+ struct ata_acpi_port_link *acpidata = ap->acpi_port_link;
if (ata_msg_probe(ap))
ata_dev_printk(atadev, KERN_DEBUG, "%s: ENTER: port#: %d\n",
__FUNCTION__, ap->port_no);
- if (noacpi || !(ap->cbl == ATA_CBL_SATA))
+ if (noacpi || !acpidata || acpidata->is_pata)
return 0;
if (!ata_dev_enabled(atadev) || (ap->flags & ATA_FLAG_DISABLED))
@@ -573,6 +539,7 @@ int ata_acpi_exec_tfs(struct ata_port *ap)
unsigned int gtf_length;
unsigned long gtf_address;
unsigned long obj_loc;
+ struct ata_acpi_port_link *acpidata = ap->acpi_port_link;
if (noacpi)
return 0;
@@ -581,7 +548,7 @@ int ata_acpi_exec_tfs(struct ata_port *ap)
* we should not run GTF on PATA devices since some
* PATA require execution of GTM/STM before GTF.
*/
- if (!(ap->cbl == ATA_CBL_SATA))
+ if (!acpidata || acpidata->is_pata)
return 0;
for (ix = 0; ix < ATA_MAX_DEVICES; ix++) {
@@ -626,8 +593,6 @@ int ata_acpi_exec_tfs(struct ata_port *ap)
*/
int ata_acpi_push_id(struct ata_port *ap, unsigned int ix)
{
- acpi_handle handle;
- acpi_integer pcidevfn;
int err;
struct device *dev = ap->host->dev;
struct ata_device *atadev = &ap->device[ix];
@@ -635,38 +600,20 @@ int ata_acpi_push_id(struct ata_port *ap, unsigned int ix)
acpi_status status;
struct acpi_object_list input;
union acpi_object in_params[1];
+ struct ata_acpi_port_link *acpidata = ap->acpi_port_link;
- if (noacpi)
+ if (noacpi || !acpidata || acpidata->is_pata)
return 0;
if (ata_msg_probe(ap))
ata_dev_printk(atadev, KERN_DEBUG, "%s: ix = %d, port#: %d\n",
__FUNCTION__, ix, ap->port_no);
- /* Don't continue if not a SATA device. */
- if (!(ap->cbl == ATA_CBL_SATA)) {
- if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
- "%s: Not a SATA device\n", __FUNCTION__);
- goto out;
- }
-
- /* Don't continue if device has no _ADR method.
- * _SDD is intended for known motherboard devices. */
- err = sata_get_dev_handle(dev, &handle, &pcidevfn);
- if (err < 0) {
- if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
- "%s: sata_get_dev_handle failed (%d\n",
- __FUNCTION__, err);
- goto out;
- }
-
/* Get this drive's _ADR info, if not already known */
if (!atadev->obj_handle) {
dev_adr = SATA_ADR_RSVD;
- err = get_sata_adr(dev, handle, pcidevfn, ix, ap, atadev,
- &dev_adr);
+ err = get_sata_adr(dev, acpidata->handle, acpidata->devfn, ix,
+ ap, atadev, &dev_adr);
if (err < 0 || dev_adr == SATA_ADR_RSVD ||
!atadev->obj_handle) {
if (ata_msg_probe(ap))
@@ -706,16 +653,19 @@ out:
return 0;
}
-
-int ata_acpi_gtm(const struct ata_port *ap, void *handle, struct acpi_gtm *gtm)
+int ata_acpi_gtm(const struct ata_port *ap, struct acpi_gtm *gtm)
{
acpi_status status;
struct acpi_buffer output;
+ struct ata_acpi_port_link *acpidata = ap->acpi_port_link;
+
+ if (!acpidata || !acpidata->is_pata)
+ return -ENODEV;
output.length = ACPI_ALLOCATE_BUFFER;
output.pointer = NULL;
- status = acpi_evaluate_object(handle, "_GTM", NULL, &output);
+ status = acpi_evaluate_object(acpidata->handle, "_GTM", NULL, &output);
if (ACPI_FAILURE(status)) {
ata_port_printk(ap, KERN_ERR, "ACPI get timing mode failed.\n");
@@ -730,11 +680,15 @@ int ata_acpi_gtm(const struct ata_port *ap, void *handle, struct acpi_gtm *gtm)
return 0;
}
-int ata_acpi_stm(const struct ata_port *ap, void *handle, struct acpi_gtm *stm)
+int ata_acpi_stm(const struct ata_port *ap, struct acpi_gtm *stm)
{
acpi_status status;
struct acpi_object_list input;
union acpi_object in_params[3];
+ struct ata_acpi_port_link *acpidata = ap->acpi_port_link;
+
+ if (!acpidata || !acpidata->is_pata)
+ return -ENODEV;
in_params[0].type = ACPI_TYPE_BUFFER;
in_params[0].buffer.length = sizeof(struct acpi_gtm);
@@ -750,7 +704,7 @@ int ata_acpi_stm(const struct ata_port *ap, void *handle, struct acpi_gtm *stm)
input.count = 3;
input.pointer = in_params;
- status = acpi_evaluate_object(handle, "_STM", &input, NULL);
+ status = acpi_evaluate_object(acpidata->handle, "_STM", &input, NULL);
if (ACPI_FAILURE(status)) {
ata_port_printk(ap, KERN_ERR, "ACPI set timing mode failed.\n");
@@ -787,8 +741,69 @@ int ata_pata_acpi_present(struct pci_dev *pdev)
return present;
}
+static void *ata_sata_find_handle(struct device *dev, int port)
+{
+ acpi_handle handle;
+ acpi_integer devfn;
+
+ if (noacpi)
+ return NULL;
+ if (sata_get_dev_handle(dev, &handle, &devfn) < 0)
+ return NULL;
+ return acpi_get_child(handle, port);
+}
+
+int ata_sata_acpi_present(struct pci_dev *pdev)
+{
+ if (ata_sata_find_handle(&pdev->dev, 0))
+ return 1;
+ return 0;
+}
+
+void ata_acpi_setup(struct ata_port *ap)
+{
+ struct device *dev = ap->host->dev;
+ struct pci_dev *pci_dev;
+ struct ata_acpi_port_link *acpidata;
+ int pata;
+
+ if (!is_pci_dev (dev))
+ return;
+
+ pci_dev = to_pci_dev(dev);
+
+ if (ata_pata_acpi_present(pci_dev))
+ pata = 1;
+ else if (ata_sata_acpi_present(pci_dev))
+ pata = 0;
+ else
+ return;
+
+ acpidata = kzalloc(sizeof(struct ata_acpi_port_link), GFP_KERNEL);
+
+ if (!acpidata)
+ return;
+
+ acpidata->is_pata = pata;
+ acpidata->devfn = (PCI_SLOT(pci_dev->devfn) << 16) |
+ PCI_FUNC(pci_dev->devfn);
+ if (pata) {
+ acpidata->handle =
+ ata_pata_find_handle(ap->host->dev, ap->port_no);
+ ap->gtm = kzalloc(sizeof(struct acpi_gtm), GFP_KERNEL);
+ if (!ap->gtm) {
+ kfree(ap);
+ return;
+ }
+ } else
+ acpidata->handle =
+ ata_sata_find_handle(ap->host->dev, ap->port_no);
+
+ ap->acpi_port_link = acpidata;
+}
EXPORT_SYMBOL_GPL(ata_acpi_gtm);
EXPORT_SYMBOL_GPL(ata_acpi_stm);
EXPORT_SYMBOL_GPL(ata_pata_acpi_handle);
EXPORT_SYMBOL_GPL(ata_pata_acpi_present);
+EXPORT_SYMBOL_GPL(ata_acpi_setup);
diff --git a/drivers/ata/libata-acpi.h b/drivers/ata/libata-acpi.h
index d630ec3..5948310 100644
--- a/drivers/ata/libata-acpi.h
+++ b/drivers/ata/libata-acpi.h
@@ -39,9 +39,48 @@ struct acpi_gtm {
u32 flags;
};
-extern int ata_acpi_gtm(const struct ata_port *p, void *handle, struct acpi_gtm *gtm);
-extern int ata_acpi_stm(const struct ata_port *ap, void *handle, struct acpi_gtm *stm);
+struct ata_acpi_port_link {
+ int is_pata;
+ acpi_handle *handle;
+ acpi_integer devfn;
+};
+
+#ifdef CONFIG_SATA_ACPI
+extern int ata_acpi_exec_tfs(struct ata_port *ap);
+extern int ata_acpi_push_id(struct ata_port *ap, unsigned int ix);
+extern int ata_acpi_gtm(const struct ata_port *p, struct acpi_gtm *gtm);
+extern int ata_acpi_stm(const struct ata_port *ap, struct acpi_gtm *stm);
extern void *ata_pata_acpi_handle(const struct ata_port *ap);
extern int ata_pata_acpi_present(struct pci_dev *pdev);
-
+extern void ata_acpi_setup(struct ata_port *ap);
+#else
+static inline int ata_acpi_exec_tfs(struct ata_port *ap)
+{
+ return 0;
+}
+static inline int ata_acpi_push_id(struct ata_port *ap, unsigned int ix)
+{
+ return 0;
+}
+extern inline int ata_acpi_gtm(const struct ata_port *p, struct acpi_gtm *gtm)
+{
+ return 0;
+}
+extern inline int ata_acpi_stm(const struct ata_port *ap, struct acpi_gtm *stm)
+{
+ return 0;
+}
+extern inline void *ata_pata_acpi_handle(const struct ata_port *ap)
+{
+ return 0;
+}
+extern inline int ata_pata_acpi_present(struct pci_dev *pdev)
+{
+ return 0;
+}
+extern inline void ata_acpi_setup(struct ata_port *ap)
+{
+ return;
+}
+#endif /* CONFIG_SATA_ACPI */
#endif
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index bf327d4..a7258b6 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -58,6 +58,7 @@
#include <asm/byteorder.h>
#include "libata.h"
+#include "libata-acpi.h"
#define DRV_VERSION "2.20" /* must be exactly four chars */
@@ -5444,6 +5445,8 @@ int ata_host_suspend(struct ata_host *host, pm_message_t mesg)
goto fail;
}
}
+
+ ata_acpi_gtm(ap, ap->gtm);
}
host->dev->power.power_state = mesg;
@@ -5467,6 +5470,12 @@ int ata_host_suspend(struct ata_host *host, pm_message_t mesg)
*/
void ata_host_resume(struct ata_host *host)
{
+ int i;
+ for (i = 0; i < host->n_ports; i++) {
+ struct ata_port *ap = host->ports[i];
+ ata_acpi_stm(ap, ap->gtm);
+ }
+
ata_host_request_pm(host, PMSG_ON, ATA_EH_SOFTRESET,
ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET, 0);
host->dev->power.power_state = PMSG_ON;
@@ -5917,6 +5926,7 @@ int ata_device_add(const struct ata_probe_ent *ent)
struct ata_port *ap = host->ports[i];
ata_scsi_scan_host(ap);
+ ata_acpi_setup(ap);
}
VPRINTK("EXIT, returning %u\n", ent->n_ports);
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index c426714..eb41263 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -97,21 +97,6 @@ extern void ata_port_init(struct ata_port *ap, struct ata_host *host,
extern struct ata_probe_ent *ata_probe_ent_alloc(struct device *dev,
const struct ata_port_info *port);
-/* libata-acpi.c */
-#ifdef CONFIG_SATA_ACPI
-extern int ata_acpi_exec_tfs(struct ata_port *ap);
-extern int ata_acpi_push_id(struct ata_port *ap, unsigned int ix);
-#else
-static inline int ata_acpi_exec_tfs(struct ata_port *ap)
-{
- return 0;
-}
-static inline int ata_acpi_push_id(struct ata_port *ap, unsigned int ix)
-{
- return 0;
-}
-#endif
-
/* libata-scsi.c */
extern struct scsi_transport_template ata_scsi_transport_template;
diff --git a/include/linux/libata.h b/include/linux/libata.h
index e3f32f3..4774c08 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -590,6 +590,10 @@ struct ata_port {
void *private_data;
u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */
+ struct acpi_gtm *gtm;
+#ifdef CONFIG_SATA_ACPI
+ struct ata_acpi_port_link *acpi_port_link;
+#endif
};
struct ata_port_operations {
--
Matthew Garrett | mjg59@xxxxxxxxxxxxx
-
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