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[SCSI] ibmmca: 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 2007-05-21 15:10:00 +09:00 committed by James Bottomley
parent 4c688fc7df
commit 5f60ef6ac7
1 changed files with 13 additions and 15 deletions
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28
drivers/scsi/ibmmca.c
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@ -555,7 +555,7 @@ static irqreturn_t interrupt_handler(int irq, void *dev_id)
printk(KERN_ERR "IBM MCA SCSI: Fatal Subsystem ERROR!\n");
printk(KERN_ERR " Last cmd=0x%x, ena=%x, len=", lastSCSI, ld(shpnt)[ldn].scb.enable);
if (ld(shpnt)[ldn].cmd)
printk("%ld/%ld,", (long) (ld(shpnt)[ldn].cmd->request_bufflen), (long) (ld(shpnt)[ldn].scb.sys_buf_length));
printk("%ld/%ld,", (long) (scsi_bufflen(ld(shpnt)[ldn].cmd)), (long) (ld(shpnt)[ldn].scb.sys_buf_length));
else
printk("none,");
if (ld(shpnt)[ldn].cmd)
@ -1708,7 +1708,7 @@ static int ibmmca_queuecommand(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *))
int target;
int max_pun;
int i;
struct scatterlist *sl;
struct scatterlist *sg;
shpnt = cmd->device->host;
@ -1829,20 +1829,18 @@ static int ibmmca_queuecommand(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *))
scb->tsb_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].tsb));
scsi_cmd = cmd->cmnd[0];
if (cmd->use_sg) {
i = cmd->use_sg;
sl = (struct scatterlist *) (cmd->request_buffer);
if (i > 16)
panic("IBM MCA SCSI: scatter-gather list too long.\n");
while (--i >= 0) {
ld(shpnt)[ldn].sge[i].address = (void *) (isa_page_to_bus(sl[i].page) + sl[i].offset);
ld(shpnt)[ldn].sge[i].byte_length = sl[i].length;
if (scsi_sg_count(cmd)) {
BUG_ON(scsi_sg_count(cmd) > 16);
scsi_for_each_sg(cmd, sg, scsi_sg_count(cmd), i) {
ld(shpnt)[ldn].sge[i].address = (void *) (isa_page_to_bus(sg->page) + sg->offset);
ld(shpnt)[ldn].sge[i].byte_length = sg->length;
}
scb->enable |= IM_POINTER_TO_LIST;
scb->sys_buf_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].sge[0]));
scb->sys_buf_length = cmd->use_sg * sizeof(struct im_sge);
scb->sys_buf_length = scsi_sg_count(cmd) * sizeof(struct im_sge);
} else {
scb->sys_buf_adr = isa_virt_to_bus(cmd->request_buffer);
scb->sys_buf_adr = isa_virt_to_bus(scsi_sglist(cmd));
/* recent Linux midlevel SCSI places 1024 byte for inquiry
* command. Far too much for old PS/2 hardware. */
switch (scsi_cmd) {
@ -1853,16 +1851,16 @@ static int ibmmca_queuecommand(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *))
case REQUEST_SENSE:
case MODE_SENSE:
case MODE_SELECT:
if (cmd->request_bufflen > 255)
if (scsi_bufflen(cmd) > 255)
scb->sys_buf_length = 255;
else
scb->sys_buf_length = cmd->request_bufflen;
scb->sys_buf_length = scsi_bufflen(cmd);
break;
case TEST_UNIT_READY:
scb->sys_buf_length = 0;
break;
default:
scb->sys_buf_length = cmd->request_bufflen;
scb->sys_buf_length = scsi_bufflen(cmd);
break;
}
}