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[SCSI] a100u2w: convert to use the data buffer accessors

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- 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 2007-05-14 20:26:37 +09:00 committed by James Bottomley
parent e1eaf46009
commit 985c0a7277
1 changed files with 17 additions and 33 deletions
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50
drivers/scsi/a100u2w.c
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@ -796,7 +796,7 @@ static void orc_interrupt(
*****************************************************************************/
static void inia100BuildSCB(ORC_HCS * pHCB, ORC_SCB * pSCB, struct scsi_cmnd * SCpnt)
{ /* Create corresponding SCB */
struct scatterlist *pSrbSG;
struct scatterlist *sg;
ORC_SG *pSG; /* Pointer to SG list */
int i, count_sg;
ESCB *pEScb;
@ -813,30 +813,22 @@ static void inia100BuildSCB(ORC_HCS * pHCB, ORC_SCB * pSCB, struct scsi_cmnd * S
pSCB->SCB_Reserved1 = 0;
pSCB->SCB_SGLen = 0;
if ((pSCB->SCB_XferLen = (U32) SCpnt->request_bufflen)) {
pSG = (ORC_SG *) & pEScb->ESCB_SGList[0];
if (SCpnt->use_sg) {
pSrbSG = (struct scatterlist *) SCpnt->request_buffer;
count_sg = pci_map_sg(pHCB->pdev, pSrbSG, SCpnt->use_sg,
SCpnt->sc_data_direction);
pSCB->SCB_SGLen = (U32) (count_sg * 8);
for (i = 0; i < count_sg; i++, pSG++, pSrbSG++) {
pSG->SG_Ptr = (U32) sg_dma_address(pSrbSG);
pSG->SG_Len = (U32) sg_dma_len(pSrbSG);
}
} else if (SCpnt->request_bufflen != 0) {/* Non SG */
pSCB->SCB_SGLen = 0x8;
SCpnt->SCp.dma_handle = pci_map_single(pHCB->pdev,
SCpnt->request_buffer,
SCpnt->request_bufflen,
SCpnt->sc_data_direction);
pSG->SG_Ptr = (U32) SCpnt->SCp.dma_handle;
pSG->SG_Len = (U32) SCpnt->request_bufflen;
} else {
pSCB->SCB_SGLen = 0;
pSG->SG_Ptr = 0;
pSG->SG_Len = 0;
pSCB->SCB_XferLen = (U32) scsi_bufflen(SCpnt);
pSG = (ORC_SG *) & pEScb->ESCB_SGList[0];
count_sg = scsi_dma_map(SCpnt);
BUG_ON(count_sg < 0);
if (count_sg) {
pSCB->SCB_SGLen = (U32) (count_sg * 8);
scsi_for_each_sg(SCpnt, sg, count_sg, i) {
pSG->SG_Ptr = (U32) sg_dma_address(sg);
pSG->SG_Len = (U32) sg_dma_len(sg);
pSG++;
}
} else {
pSCB->SCB_SGLen = 0;
pSG->SG_Ptr = 0;
pSG->SG_Len = 0;
}
pSCB->SCB_SGPAddr = (U32) pSCB->SCB_SensePAddr;
pSCB->SCB_HaStat = 0;
@ -995,15 +987,7 @@ static void inia100SCBPost(BYTE * pHcb, BYTE * pScb)
}
pSRB->result = pSCB->SCB_TaStat | (pSCB->SCB_HaStat << 16);
if (pSRB->use_sg) {
pci_unmap_sg(pHCB->pdev,
(struct scatterlist *)pSRB->request_buffer,
pSRB->use_sg, pSRB->sc_data_direction);
} else if (pSRB->request_bufflen != 0) {
pci_unmap_single(pHCB->pdev, pSRB->SCp.dma_handle,
pSRB->request_bufflen,
pSRB->sc_data_direction);
}
scsi_dma_unmap(pSRB);
pSRB->scsi_done(pSRB); /* Notify system DONE */