[PATCH 04/11] libata-acpi: clean up parameters and misc stuff

Tejun Heo
2007-05-05T16:34:57Z

This patch cleans up libata-acpi such that it looks similar to other
libata files. This patch doesn't introuce any behavior changes.

* make libata-acpi functions take ata_device instead of ata_port +
device index
* s/atadev/dev/
* de-indent local variable declarations

Signed-off-by: Tejun Heo <htejun@gmail.com>
---
drivers/ata/libata-acpi.c | 192 ++++++++++++++++++++++-----------------------
drivers/ata/libata-core.c | 2 +-
drivers/ata/libata.h | 4 +-
3 files changed, 98 insertions(+), 100 deletions(-)

diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index cb3eab6..ed4138e 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -270,8 +270,7 @@ out:

/**
* do_drive_get_GTF - get the drive bootup default taskfile settings
- * @ap: the ata_port for the drive
- * @ix: target ata_device (drive) index
+ * @dev: target ATA device
* @gtf_length: number of bytes of _GTF data returned at @gtf_address
* @gtf_address: buffer containing _GTF taskfile arrays
*
@@ -286,20 +285,19 @@ out:
* The returned @gtf_length and @gtf_address are only valid if the
* function return value is 0.
*/
-static int do_drive_get_GTF(struct ata_port *ap, int ix,
- unsigned int *gtf_length, unsigned long *gtf_address,
- unsigned long *obj_loc)
+static int do_drive_get_GTF(struct ata_device *dev, unsigned int *gtf_length,
+ unsigned long *gtf_address, unsigned long *obj_loc)
{
- acpi_status status;
- acpi_handle dev_handle = NULL;
- acpi_handle chan_handle, drive_handle;
- acpi_integer pcidevfn = 0;
- u32 dev_adr;
- struct acpi_buffer output;
- union acpi_object *out_obj;
- struct device *dev = ap->host->dev;
- struct ata_device *atadev = &ap->device[ix];
- int err = -ENODEV;
+ struct ata_port *ap = dev->ap;
+ acpi_status status;
+ acpi_handle dev_handle = NULL;
+ acpi_handle chan_handle, drive_handle;
+ acpi_integer pcidevfn = 0;
+ u32 dev_adr;
+ struct acpi_buffer output;
+ union acpi_object *out_obj;
+ struct device *gdev = ap->host->dev;
+ int err = -ENODEV;

*gtf_length = 0;
*gtf_address = 0UL;
@@ -309,14 +307,14 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,
return 0;

if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG, "%s: ENTER: port#: %d\n",
+ ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER: port#: %d\n",
__FUNCTION__, ap->port_no);

- if (!ata_dev_enabled(atadev) || (ap->flags & ATA_FLAG_DISABLED)) {
+ if (!ata_dev_enabled(dev) || (ap->flags & ATA_FLAG_DISABLED)) {
if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG, "%s: ERR: "
+ ata_dev_printk(dev, KERN_DEBUG, "%s: ERR: "
"ata_dev_present: %d, PORT_DISABLED: %lu\n",
- __FUNCTION__, ata_dev_enabled(atadev),
+ __FUNCTION__, ata_dev_enabled(dev),
ap->flags & ATA_FLAG_DISABLED);
goto out;
}
@@ -324,19 +322,19 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,
/* 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);
+ err = pata_get_dev_handle(gdev, &dev_handle, &pcidevfn);
if (err < 0) {
if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
+ ata_dev_printk(dev, KERN_DEBUG,
"%s: pata_get_dev_handle failed (%d)\n",
__FUNCTION__, err);
goto out;
}
} else {
- err = sata_get_dev_handle(dev, &dev_handle, &pcidevfn);
+ err = sata_get_dev_handle(gdev, &dev_handle, &pcidevfn);
if (err < 0) {
if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
+ ata_dev_printk(dev, KERN_DEBUG,
"%s: sata_get_dev_handle failed (%d\n",
__FUNCTION__, err);
goto out;
@@ -344,7 +342,7 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,
}

/* Get this drive's _ADR info. if not already known. */
- if (!atadev->obj_handle) {
+ if (!dev->obj_handle) {
if (!(ap->cbl == ATA_CBL_SATA)) {
/* get child objects of dev_handle == channel objects,
* + _their_ children == drive objects */
@@ -352,7 +350,7 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,
chan_handle = acpi_get_child(dev_handle,
ap->port_no);
if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
+ ata_dev_printk(dev, KERN_DEBUG,
"%s: chan adr=%d: chan_handle=0x%p\n",
__FUNCTION__, ap->port_no,
chan_handle);
@@ -361,26 +359,26 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,
goto out;
}
/* TBD: could also check ACPI object VALID bits */
- drive_handle = acpi_get_child(chan_handle, ix);
+ drive_handle = acpi_get_child(chan_handle, dev->devno);
if (!drive_handle) {
err = -ENODEV;
goto out;
}
- dev_adr = ix;
- atadev->obj_handle = drive_handle;
+ dev_adr = dev->devno;
+ dev->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(gdev, dev_handle, pcidevfn, 0,
+ ap, dev, &dev_adr);
}
if (err < 0 || dev_adr == SATA_ADR_RSVD ||
- !atadev->obj_handle) {
+ !dev->obj_handle) {
if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
+ ata_dev_printk(dev, KERN_DEBUG,
"%s: get_sata/pata_adr failed: "
"err=%d, dev_adr=%u, obj_handle=0x%p\n",
__FUNCTION__, err, dev_adr,
- atadev->obj_handle);
+ dev->obj_handle);
goto out;
}
}
@@ -391,11 +389,11 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,

/* _GTF has no input parameters */
err = -EIO;
- status = acpi_evaluate_object(atadev->obj_handle, "_GTF",
+ status = acpi_evaluate_object(dev->obj_handle, "_GTF",
NULL, &output);
if (ACPI_FAILURE(status)) {
if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
+ ata_dev_printk(dev, KERN_DEBUG,
"%s: Run _GTF error: status = 0x%x\n",
__FUNCTION__, status);
goto out;
@@ -403,7 +401,7 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,

if (!output.length || !output.pointer) {
if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG, "%s: Run _GTF: "
+ ata_dev_printk(dev, KERN_DEBUG, "%s: Run _GTF: "
"length or ptr is NULL (0x%llx, 0x%p)\n",
__FUNCTION__,
(unsigned long long)output.length,
@@ -416,7 +414,7 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,
if (out_obj->type != ACPI_TYPE_BUFFER) {
kfree(output.pointer);
if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG, "%s: Run _GTF: "
+ ata_dev_printk(dev, KERN_DEBUG, "%s: Run _GTF: "
"error: expected object type of "
" ACPI_TYPE_BUFFER, got 0x%x\n",
__FUNCTION__, out_obj->type);
@@ -427,7 +425,7 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,
if (!out_obj->buffer.length || !out_obj->buffer.pointer ||
out_obj->buffer.length % REGS_PER_GTF) {
if (ata_msg_drv(ap))
- ata_dev_printk(atadev, KERN_ERR,
+ ata_dev_printk(dev, KERN_ERR,
"%s: unexpected GTF length (%d) or addr (0x%p)\n",
__FUNCTION__, out_obj->buffer.length,
out_obj->buffer.pointer);
@@ -439,7 +437,7 @@ static int do_drive_get_GTF(struct ata_port *ap, int ix,
*gtf_address = (unsigned long)out_obj->buffer.pointer;
*obj_loc = (unsigned long)out_obj;
if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG, "%s: returning "
+ ata_dev_printk(dev, KERN_DEBUG, "%s: returning "
"gtf_length=%d, gtf_address=0x%lx, obj_loc=0x%lx\n",
__FUNCTION__, *gtf_length, *gtf_address, *obj_loc);
err = 0;
@@ -449,7 +447,7 @@ out:

/**
* taskfile_load_raw - send taskfile registers to host controller
- * @ap: Port to which output is sent
+ * @dev: target ATA device
* @gtf: raw ATA taskfile register set (0x1f1 - 0x1f7)
*
* Outputs ATA taskfile to standard ATA host controller using MMIO
@@ -466,15 +464,15 @@ out:
* LOCKING: TBD:
* Inherited from caller.
*/
-static void taskfile_load_raw(struct ata_port *ap,
- struct ata_device *atadev,
- const struct taskfile_array *gtf)
+static void taskfile_load_raw(struct ata_device *dev,
+ const struct taskfile_array *gtf)
{
+ struct ata_port *ap = dev->ap;
struct ata_taskfile tf;
unsigned int err;

if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG, "%s: (0x1f1-1f7): hex: "
+ ata_dev_printk(dev, KERN_DEBUG, "%s: (0x1f1-1f7): hex: "
"%02x %02x %02x %02x %02x %02x %02x\n",
__FUNCTION__,
gtf->tfa[0], gtf->tfa[1], gtf->tfa[2],
@@ -485,7 +483,7 @@ static void taskfile_load_raw(struct ata_port *ap,
&& (gtf->tfa[6] == 0))
return;

- ata_tf_init(atadev, &tf);
+ ata_tf_init(dev, &tf);

/* convert gtf to tf */
tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; /* TBD */
@@ -498,17 +496,16 @@ static void taskfile_load_raw(struct ata_port *ap,
tf.device = gtf->tfa[5]; /* 0x1f6 */
tf.command = gtf->tfa[6]; /* 0x1f7 */

- err = ata_exec_internal(atadev, &tf, NULL, DMA_NONE, NULL, 0);
+ err = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0);
if (err && ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_ERR,
+ ata_dev_printk(dev, KERN_ERR,
"%s: ata_exec_internal failed: %u\n",
__FUNCTION__, err);
}

/**
* do_drive_set_taskfiles - write the drive taskfile settings from _GTF
- * @ap: the ata_port for the drive
- * @atadev: target ata_device
+ * @dev: target ATA device
* @gtf_length: total number of bytes of _GTF taskfiles
* @gtf_address: location of _GTF taskfile arrays
*
@@ -517,30 +514,31 @@ static void taskfile_load_raw(struct ata_port *ap,
* Write {gtf_address, length gtf_length} in groups of
* REGS_PER_GTF bytes.
*/
-static int do_drive_set_taskfiles(struct ata_port *ap,
- struct ata_device *atadev, unsigned int gtf_length,
- unsigned long gtf_address)
+static int do_drive_set_taskfiles(struct ata_device *dev,
+ unsigned int gtf_length,
+ unsigned long gtf_address)
{
- int err = -ENODEV;
- int gtf_count = gtf_length / REGS_PER_GTF;
- int ix;
+ struct ata_port *ap = dev->ap;
+ int err = -ENODEV;
+ int gtf_count = gtf_length / REGS_PER_GTF;
+ int ix;
struct taskfile_array *gtf;

if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG, "%s: ENTER: port#: %d\n",
+ ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER: port#: %d\n",
__FUNCTION__, ap->port_no);

if (libata_noacpi || !(ap->cbl == ATA_CBL_SATA))
return 0;

- if (!ata_dev_enabled(atadev) || (ap->flags & ATA_FLAG_DISABLED))
+ if (!ata_dev_enabled(dev) || (ap->flags & ATA_FLAG_DISABLED))
goto out;
if (!gtf_count) /* shouldn't be here */
goto out;

if (gtf_length % REGS_PER_GTF) {
if (ata_msg_drv(ap))
- ata_dev_printk(atadev, KERN_ERR,
+ ata_dev_printk(dev, KERN_ERR,
"%s: unexpected GTF length (%d)\n",
__FUNCTION__, gtf_length);
goto out;
@@ -551,7 +549,7 @@ static int do_drive_set_taskfiles(struct ata_port *ap,
(gtf_address + ix * REGS_PER_GTF);

/* send all TaskFile registers (0x1f1-0x1f7) *in*that*order* */
- taskfile_load_raw(ap, atadev, gtf);
+ taskfile_load_raw(dev, gtf);
}

err = 0;
@@ -567,11 +565,11 @@ out:
*/
int ata_acpi_exec_tfs(struct ata_port *ap)
{
- int ix;
- int ret =0;
- unsigned int gtf_length;
- unsigned long gtf_address;
- unsigned long obj_loc;
+ int ix;
+ int ret = 0;
+ unsigned int gtf_length;
+ unsigned long gtf_address;
+ unsigned long obj_loc;

if (libata_noacpi)
return 0;
@@ -584,11 +582,13 @@ int ata_acpi_exec_tfs(struct ata_port *ap)
return 0;

for (ix = 0; ix < ATA_MAX_DEVICES; ix++) {
- if (!ata_dev_enabled(&ap->device[ix]))
+ struct ata_device *dev = &ap->device[ix];
+
+ if (!ata_dev_enabled(dev))
continue;

- ret = do_drive_get_GTF(ap, ix,
- &gtf_length, &gtf_address, &obj_loc);
+ ret = do_drive_get_GTF(dev, &gtf_length, &gtf_address,
+ &obj_loc);
if (ret < 0) {
if (ata_msg_probe(ap))
ata_port_printk(ap, KERN_DEBUG,
@@ -597,8 +597,7 @@ int ata_acpi_exec_tfs(struct ata_port *ap)
break;
}

- ret = do_drive_set_taskfiles(ap, &ap->device[ix],
- gtf_length, gtf_address);
+ ret = do_drive_set_taskfiles(dev, gtf_length, gtf_address);
kfree((void *)obj_loc);
if (ret < 0) {
if (ata_msg_probe(ap))
@@ -614,8 +613,7 @@ int ata_acpi_exec_tfs(struct ata_port *ap)

/**
* ata_acpi_push_id - send Identify data to drive
- * @ap: the ata_port for the drive
- * @ix: drive index
+ * @dev: target ATA device
*
* _SDD ACPI object: for SATA mode only
* Must be after Identify (Packet) Device -- uses its data
@@ -623,57 +621,57 @@ int ata_acpi_exec_tfs(struct ata_port *ap)
* method and if it fails for whatever reason, we should still
* just keep going.
*/
-int ata_acpi_push_id(struct ata_port *ap, unsigned int ix)
+int ata_acpi_push_id(struct ata_device *dev)
{
- acpi_handle handle;
- acpi_integer pcidevfn;
- int err;
- struct device *dev = ap->host->dev;
- struct ata_device *atadev = &ap->device[ix];
- u32 dev_adr;
- acpi_status status;
- struct acpi_object_list input;
- union acpi_object in_params[1];
+ struct ata_port *ap = dev->ap;
+ acpi_handle handle;
+ acpi_integer pcidevfn;
+ int err;
+ struct device *gdev = ap->host->dev;
+ u32 dev_adr;
+ acpi_status status;
+ struct acpi_object_list input;
+ union acpi_object in_params[1];

if (libata_noacpi)
return 0;

if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG, "%s: ix = %d, port#: %d\n",
- __FUNCTION__, ix, ap->port_no);
+ ata_dev_printk(dev, KERN_DEBUG, "%s: ix = %d, port#: %d\n",
+ __FUNCTION__, dev->devno, 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,
+ ata_dev_printk(dev, 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);
+ err = sata_get_dev_handle(gdev, &handle, &pcidevfn);
if (err < 0) {
if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
+ ata_dev_printk(dev, 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 (!dev->obj_handle) {
dev_adr = SATA_ADR_RSVD;
- err = get_sata_adr(dev, handle, pcidevfn, ix, ap, atadev,
+ err = get_sata_adr(gdev, handle, pcidevfn, dev->devno, ap, dev,
&dev_adr);
if (err < 0 || dev_adr == SATA_ADR_RSVD ||
- !atadev->obj_handle) {
+ !dev->obj_handle) {
if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
+ ata_dev_printk(dev, KERN_DEBUG,
"%s: get_sata_adr failed: "
"err=%d, dev_adr=%u, obj_handle=0x%p\n",
__FUNCTION__, err, dev_adr,
- atadev->obj_handle);
+ dev->obj_handle);
goto out;
}
}
@@ -683,19 +681,19 @@ int ata_acpi_push_id(struct ata_port *ap, unsigned int ix)
input.count = 1;
input.pointer = in_params;
in_params[0].type = ACPI_TYPE_BUFFER;
- in_params[0].buffer.length = sizeof(atadev->id[0]) * ATA_ID_WORDS;
- in_params[0].buffer.pointer = (u8 *)atadev->id;
+ in_params[0].buffer.length = sizeof(dev->id[0]) * ATA_ID_WORDS;
+ in_params[0].buffer.pointer = (u8 *)dev->id;
/* Output buffer: _SDD has no output */

/* It's OK for _SDD to be missing too. */
- swap_buf_le16(atadev->id, ATA_ID_WORDS);
- status = acpi_evaluate_object(atadev->obj_handle, "_SDD", &input, NULL);
- swap_buf_le16(atadev->id, ATA_ID_WORDS);
+ swap_buf_le16(dev->id, ATA_ID_WORDS);
+ status = acpi_evaluate_object(dev->obj_handle, "_SDD", &input, NULL);
+ swap_buf_le16(dev->id, ATA_ID_WORDS);

err = ACPI_FAILURE(status) ? -EIO : 0;
if (err < 0) {
if (ata_msg_probe(ap))
- ata_dev_printk(atadev, KERN_DEBUG,
+ ata_dev_printk(dev, KERN_DEBUG,
"%s _SDD error: status = 0x%x\n",
__FUNCTION__, status);
}
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index f53aa87..55543b2 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1841,7 +1841,7 @@ int ata_dev_configure(struct ata_device *dev)
ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER\n", __FUNCTION__);

/* set _SDD */
- rc = ata_acpi_push_id(ap, dev->devno);
+ rc = ata_acpi_push_id(dev);
if (rc) {
ata_dev_printk(dev, KERN_WARNING, "failed to set _SDD(%d)\n",
rc);
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 122bc16..5e24666 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -99,13 +99,13 @@ extern struct ata_port *ata_port_alloc(struct ata_host *host);
/* libata-acpi.c */
#ifdef CONFIG_ATA_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_push_id(struct ata_device *dev);
#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)
+static inline int ata_acpi_push_id(struct ata_device *dev)
{
return 0;
}
--
1.5.0.3