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[PATCH] PATCH: libata. Add ->data_xfer method

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We need to pass the device in order to do per device checks such as
32bit I/O enables. With the changes to include dev->ap we now don't have
to add parameters however just clean them up. Also add data_xfer methods
to the existing drivers except ata_piix (which is in the other block of
patches). If you reject the piix one just add a data_xfer to it...

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Alan Cox 2006-05-22 16:59:59 +01:00 committed by Jeff Garzik
parent 8190bdb929
commit a6b2c5d475
13 changed files with 37 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

63
drivers/scsi/libata-core.c
View File

@ -3527,7 +3527,7 @@ void swap_buf_le16(u16 *buf, unsigned int buf_words)
/**
* ata_mmio_data_xfer - Transfer data by MMIO
* @ap: port to read/write
* @dev: device for this I/O
* @buf: data buffer
* @buflen: buffer length
* @write_data: read/write
@ -3538,9 +3538,10 @@ void swap_buf_le16(u16 *buf, unsigned int buf_words)
* Inherited from caller.
*/
static void ata_mmio_data_xfer(struct ata_port *ap, unsigned char *buf,
unsigned int buflen, int write_data)
void ata_mmio_data_xfer(struct ata_device *adev, unsigned char *buf,
unsigned int buflen, int write_data)
{
struct ata_port *ap = adev->ap;
unsigned int i;
unsigned int words = buflen >> 1;
u16 *buf16 = (u16 *) buf;
@ -3572,7 +3573,7 @@ static void ata_mmio_data_xfer(struct ata_port *ap, unsigned char *buf,
/**
* ata_pio_data_xfer - Transfer data by PIO
* @ap: port to read/write
* @adev: device to target
* @buf: data buffer
* @buflen: buffer length
* @write_data: read/write
@ -3583,9 +3584,10 @@ static void ata_mmio_data_xfer(struct ata_port *ap, unsigned char *buf,
* Inherited from caller.
*/
static void ata_pio_data_xfer(struct ata_port *ap, unsigned char *buf,
unsigned int buflen, int write_data)
void ata_pio_data_xfer(struct ata_device *adev, unsigned char *buf,
unsigned int buflen, int write_data)
{
struct ata_port *ap = adev->ap;
unsigned int words = buflen >> 1;
/* Transfer multiple of 2 bytes */
@ -3609,39 +3611,6 @@ static void ata_pio_data_xfer(struct ata_port *ap, unsigned char *buf,
}
}
/**
* ata_data_xfer - Transfer data from/to the data register.
* @ap: port to read/write
* @buf: data buffer
* @buflen: buffer length
* @do_write: read/write
*
* Transfer data from/to the device data register.
*
* LOCKING:
* Inherited from caller.
*/
static void ata_data_xfer(struct ata_port *ap, unsigned char *buf,
unsigned int buflen, int do_write)
{
/* Make the crap hardware pay the costs not the good stuff */
if (unlikely(ap->flags & ATA_FLAG_IRQ_MASK)) {
unsigned long flags;
local_irq_save(flags);
if (ap->flags & ATA_FLAG_MMIO)
ata_mmio_data_xfer(ap, buf, buflen, do_write);
else
ata_pio_data_xfer(ap, buf, buflen, do_write);
local_irq_restore(flags);
} else {
if (ap->flags & ATA_FLAG_MMIO)
ata_mmio_data_xfer(ap, buf, buflen, do_write);
else
ata_pio_data_xfer(ap, buf, buflen, do_write);
}
}
/**
* ata_pio_sector - Transfer ATA_SECT_SIZE (512 bytes) of data.
* @qc: Command on going
@ -3676,17 +3645,18 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
if (PageHighMem(page)) {
unsigned long flags;
/* FIXME: use a bounce buffer */
local_irq_save(flags);
buf = kmap_atomic(page, KM_IRQ0);
/* do the actual data transfer */
ata_data_xfer(ap, buf + offset, ATA_SECT_SIZE, do_write);
ap->ops->data_xfer(qc->dev, buf + offset, ATA_SECT_SIZE, do_write);
kunmap_atomic(buf, KM_IRQ0);
local_irq_restore(flags);
} else {
buf = page_address(page);
ata_data_xfer(ap, buf + offset, ATA_SECT_SIZE, do_write);
ap->ops->data_xfer(qc->dev, buf + offset, ATA_SECT_SIZE, do_write);
}
qc->cursect++;
@ -3742,7 +3712,7 @@ static void atapi_send_cdb(struct ata_port *ap, struct ata_queued_cmd *qc)
DPRINTK("send cdb\n");
WARN_ON(qc->dev->cdb_len < 12);
ata_data_xfer(ap, qc->cdb, qc->dev->cdb_len, 1);
ap->ops->data_xfer(qc->dev, qc->cdb, qc->dev->cdb_len, 1);
ata_altstatus(ap); /* flush */
switch (qc->tf.protocol) {
@ -3802,7 +3772,7 @@ static void __atapi_pio_bytes(struct ata_queued_cmd *qc, unsigned int bytes)
"%u bytes trailing data\n", bytes);
for (i = 0; i < words; i++)
ata_data_xfer(ap, (unsigned char*)pad_buf, 2, do_write);
ap->ops->data_xfer(qc->dev, (unsigned char*)pad_buf, 2, do_write);
ap->hsm_task_state = HSM_ST_LAST;
return;
@ -3828,17 +3798,18 @@ static void __atapi_pio_bytes(struct ata_queued_cmd *qc, unsigned int bytes)
if (PageHighMem(page)) {
unsigned long flags;
/* FIXME: use bounce buffer */
local_irq_save(flags);
buf = kmap_atomic(page, KM_IRQ0);
/* do the actual data transfer */
ata_data_xfer(ap, buf + offset, count, do_write);
ap->ops->data_xfer(qc->dev, buf + offset, count, do_write);
kunmap_atomic(buf, KM_IRQ0);
local_irq_restore(flags);
} else {
buf = page_address(page);
ata_data_xfer(ap, buf + offset, count, do_write);
ap->ops->data_xfer(qc->dev, buf + offset, count, do_write);
}
bytes -= count;
@ -5702,6 +5673,8 @@ EXPORT_SYMBOL_GPL(ata_port_start);
EXPORT_SYMBOL_GPL(ata_port_stop);
EXPORT_SYMBOL_GPL(ata_host_stop);
EXPORT_SYMBOL_GPL(ata_interrupt);
EXPORT_SYMBOL_GPL(ata_mmio_data_xfer);
EXPORT_SYMBOL_GPL(ata_pio_data_xfer);
EXPORT_SYMBOL_GPL(ata_qc_prep);
EXPORT_SYMBOL_GPL(ata_noop_qc_prep);
EXPORT_SYMBOL_GPL(ata_bmdma_setup);

2
drivers/scsi/sata_mv.c
View File

@ -406,6 +406,7 @@ static const struct ata_port_operations mv5_ops = {
.qc_prep = mv_qc_prep,
.qc_issue = mv_qc_issue,
.data_xfer = ata_mmio_data_xfer,
.eng_timeout = mv_eng_timeout,
@ -433,6 +434,7 @@ static const struct ata_port_operations mv6_ops = {
.qc_prep = mv_qc_prep,
.qc_issue = mv_qc_issue,
.data_xfer = ata_mmio_data_xfer,
.eng_timeout = mv_eng_timeout,

1
drivers/scsi/sata_nv.c
View File

@ -234,6 +234,7 @@ static const struct ata_port_operations nv_ops = {
.qc_prep = ata_qc_prep,
.qc_issue = ata_qc_issue_prot,
.eng_timeout = ata_eng_timeout,
.data_xfer = ata_pio_data_xfer,
.irq_handler = nv_interrupt,
.irq_clear = ata_bmdma_irq_clear,
.scr_read = nv_scr_read,

2
drivers/scsi/sata_promise.c
View File

@ -137,6 +137,7 @@ static const struct ata_port_operations pdc_sata_ops = {
.qc_prep = pdc_qc_prep,
.qc_issue = pdc_qc_issue_prot,
.eng_timeout = pdc_eng_timeout,
.data_xfer = ata_mmio_data_xfer,
.irq_handler = pdc_interrupt,
.irq_clear = pdc_irq_clear,
@ -159,6 +160,7 @@ static const struct ata_port_operations pdc_pata_ops = {
.qc_prep = pdc_qc_prep,
.qc_issue = pdc_qc_issue_prot,
.data_xfer = ata_mmio_data_xfer,
.eng_timeout = pdc_eng_timeout,
.irq_handler = pdc_interrupt,
.irq_clear = pdc_irq_clear,

1
drivers/scsi/sata_qstor.c
View File

@ -156,6 +156,7 @@ static const struct ata_port_operations qs_ata_ops = {
.phy_reset = qs_phy_reset,
.qc_prep = qs_qc_prep,
.qc_issue = qs_qc_issue,
.data_xfer = ata_mmio_data_xfer,
.eng_timeout = qs_eng_timeout,
.irq_handler = qs_intr,
.irq_clear = qs_irq_clear,

1
drivers/scsi/sata_sil.c
View File

@ -176,6 +176,7 @@ static const struct ata_port_operations sil_ops = {
.bmdma_status = ata_bmdma_status,
.qc_prep = ata_qc_prep,
.qc_issue = ata_qc_issue_prot,
.data_xfer = ata_mmio_data_xfer,
.freeze = sil_freeze,
.thaw = sil_thaw,
.error_handler = ata_bmdma_error_handler,

1
drivers/scsi/sata_sis.c
View File

@ -113,6 +113,7 @@ static const struct ata_port_operations sis_ops = {
.bmdma_status = ata_bmdma_status,
.qc_prep = ata_qc_prep,
.qc_issue = ata_qc_issue_prot,
.data_xfer = ata_pio_data_xfer,
.eng_timeout = ata_eng_timeout,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,

1
drivers/scsi/sata_svw.c
View File

@ -320,6 +320,7 @@ static const struct ata_port_operations k2_sata_ops = {
.bmdma_status = ata_bmdma_status,
.qc_prep = ata_qc_prep,
.qc_issue = ata_qc_issue_prot,
.data_xfer = ata_mmio_data_xfer,
.eng_timeout = ata_eng_timeout,
.irq_handler = ata_interrupt,
.irq_clear = ata_bmdma_irq_clear,

1
drivers/scsi/sata_sx4.c
View File

@ -204,6 +204,7 @@ static const struct ata_port_operations pdc_20621_ops = {
.phy_reset = pdc_20621_phy_reset,
.qc_prep = pdc20621_qc_prep,
.qc_issue = pdc20621_qc_issue_prot,
.data_xfer = ata_mmio_data_xfer,
.eng_timeout = pdc_eng_timeout,
.irq_handler = pdc20621_interrupt,
.irq_clear = pdc20621_irq_clear,

1
drivers/scsi/sata_uli.c
View File

@ -110,6 +110,7 @@ static const struct ata_port_operations uli_ops = {
.bmdma_status = ata_bmdma_status,
.qc_prep = ata_qc_prep,
.qc_issue = ata_qc_issue_prot,
.data_xfer = ata_pio_data_xfer,
.eng_timeout = ata_eng_timeout,

1
drivers/scsi/sata_via.c
View File

@ -124,6 +124,7 @@ static const struct ata_port_operations svia_sata_ops = {
.qc_prep = ata_qc_prep,
.qc_issue = ata_qc_issue_prot,
.data_xfer = ata_pio_data_xfer,
.eng_timeout = ata_eng_timeout,

1
drivers/scsi/sata_vsc.c
View File

@ -297,6 +297,7 @@ static const struct ata_port_operations vsc_sata_ops = {
.bmdma_status = ata_bmdma_status,
.qc_prep = ata_qc_prep,
.qc_issue = ata_qc_issue_prot,
.data_xfer = ata_pio_data_xfer,
.eng_timeout = ata_eng_timeout,
.irq_handler = vsc_sata_interrupt,
.irq_clear = ata_bmdma_irq_clear,

6
include/linux/libata.h
View File

@ -525,6 +525,8 @@ struct ata_port_operations {
void (*bmdma_setup) (struct ata_queued_cmd *qc);
void (*bmdma_start) (struct ata_queued_cmd *qc);
void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int);
void (*qc_prep) (struct ata_queued_cmd *qc);
unsigned int (*qc_issue) (struct ata_queued_cmd *qc);
@ -646,6 +648,10 @@ extern int ata_port_start (struct ata_port *ap);
extern void ata_port_stop (struct ata_port *ap);
extern void ata_host_stop (struct ata_host_set *host_set);
extern irqreturn_t ata_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
extern void ata_mmio_data_xfer(struct ata_device *adev, unsigned char *buf,
unsigned int buflen, int write_data);
extern void ata_pio_data_xfer(struct ata_device *adev, unsigned char *buf,
unsigned int buflen, int write_data);
extern void ata_qc_prep(struct ata_queued_cmd *qc);
extern void ata_noop_qc_prep(struct ata_queued_cmd *qc);
extern unsigned int ata_qc_issue_prot(struct ata_queued_cmd *qc);