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[SCSI] sym53c500_cs: convert to use the data buffer accessors 

- remove the unnecessary map_single path.

- convert to use the new accessors for the sg lists and the
parameters.

Jens Axboe <jens.axboe@oracle.com> did the for_each_sg cleanup.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
FUJITA Tomonori 2007-05-16 05:34:05 +09:00 committed by James Bottomley
parent 772a5c3f3b
commit 9482ef855e
1 changed files with 19 additions and 23 deletions
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42
drivers/scsi/pcmcia/sym53c500_cs.c
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@ -370,8 +370,6 @@ SYM53C500_intr(int irq, void *dev_id)
DEB(unsigned char seq_reg;)
unsigned char status, int_reg;
unsigned char pio_status;
struct scatterlist *sglist;
unsigned int sgcount;
int port_base = dev->io_port;
struct sym53c500_data *data =
(struct sym53c500_data *)dev->hostdata;
@ -434,20 +432,19 @@ SYM53C500_intr(int irq, void *dev_id)
switch (status & 0x07) { /* scsi phase */
case 0x00: /* DATA-OUT */
if (int_reg & 0x10) { /* Target requesting info transfer */
struct scatterlist *sg;
int i;
curSC->SCp.phase = data_out;
VDEB(printk("SYM53C500: Data-Out phase\n"));
outb(FLUSH_FIFO, port_base + CMD_REG);
LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */
LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
if (!curSC->use_sg) /* Don't use scatter-gather */
SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
else { /* use scatter-gather */
sgcount = curSC->use_sg;
sglist = curSC->request_buffer;
while (sgcount--) {
SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
sglist++;
}
scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
SYM53C500_pio_write(fast_pio, port_base,
page_address(sg->page) + sg->offset,
sg->length);
}
REG0(port_base);
}
@ -455,20 +452,19 @@ SYM53C500_intr(int irq, void *dev_id)
case 0x01: /* DATA-IN */
if (int_reg & 0x10) { /* Target requesting info transfer */
struct scatterlist *sg;
int i;
curSC->SCp.phase = data_in;
VDEB(printk("SYM53C500: Data-In phase\n"));
outb(FLUSH_FIFO, port_base + CMD_REG);
LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */
LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */
outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG);
if (!curSC->use_sg) /* Don't use scatter-gather */
SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen);
else { /* Use scatter-gather */
sgcount = curSC->use_sg;
sglist = curSC->request_buffer;
while (sgcount--) {
SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length);
sglist++;
}
scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) {
SYM53C500_pio_read(fast_pio, port_base,
page_address(sg->page) + sg->offset,
sg->length);
}
REG0(port_base);
}
@ -578,7 +574,7 @@ SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n",
SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id,
SCpnt->device->lun, SCpnt->request_bufflen));
SCpnt->device->lun, scsi_bufflen(SCpnt)));
VDEB(for (i = 0; i < SCpnt->cmd_len; i++)
printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i]));