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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2007-05-14 14:24:58 +0400
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-05-27 04:19:04 +0400
commitfea97f9ab26a17c29eadc102c04b88776d6262d4 (patch)
treec8a315f0a569d57d649504f4a2bacbd28e2b7920 /drivers/scsi/u14-34f.c
parentd17867135639bec1bce5b38d29e6fa4cfea050ea (diff)
downloadlinux-fea97f9ab26a17c29eadc102c04b88776d6262d4.tar.xz
[SCSI] u14-34f: 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>
Diffstat (limited to 'drivers/scsi/u14-34f.c')
-rw-r--r--drivers/scsi/u14-34f.c60
1 files changed, 27 insertions, 33 deletions
diff --git a/drivers/scsi/u14-34f.c b/drivers/scsi/u14-34f.c
index 3de08a15de40..9e8232a1f169 100644
--- a/drivers/scsi/u14-34f.c
+++ b/drivers/scsi/u14-34f.c
@@ -1111,7 +1111,7 @@ static int u14_34f_detect(struct scsi_host_template *tpnt) {
static void map_dma(unsigned int i, unsigned int j) {
unsigned int data_len = 0;
unsigned int k, count, pci_dir;
- struct scatterlist *sgpnt;
+ struct scatterlist *sg;
struct mscp *cpp;
struct scsi_cmnd *SCpnt;
@@ -1124,33 +1124,28 @@ static void map_dma(unsigned int i, unsigned int j) {
cpp->sense_len = sizeof SCpnt->sense_buffer;
- if (!SCpnt->use_sg) {
-
- /* If we get here with PCI_DMA_NONE, pci_map_single triggers a BUG() */
- if (!SCpnt->request_bufflen) pci_dir = PCI_DMA_BIDIRECTIONAL;
-
- if (SCpnt->request_buffer)
- cpp->data_address = H2DEV(pci_map_single(HD(j)->pdev,
- SCpnt->request_buffer, SCpnt->request_bufflen, pci_dir));
-
- cpp->data_len = H2DEV(SCpnt->request_bufflen);
- return;
- }
-
- sgpnt = (struct scatterlist *) SCpnt->request_buffer;
- count = pci_map_sg(HD(j)->pdev, sgpnt, SCpnt->use_sg, pci_dir);
-
- for (k = 0; k < count; k++) {
- cpp->sglist[k].address = H2DEV(sg_dma_address(&sgpnt[k]));
- cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(&sgpnt[k]));
- data_len += sgpnt[k].length;
- }
-
- cpp->sg = TRUE;
- cpp->use_sg = SCpnt->use_sg;
- cpp->data_address = H2DEV(pci_map_single(HD(j)->pdev, cpp->sglist,
- SCpnt->use_sg * sizeof(struct sg_list), pci_dir));
- cpp->data_len = H2DEV(data_len);
+ if (scsi_bufflen(SCpnt)) {
+ count = scsi_dma_map(SCpnt);
+ BUG_ON(count < 0);
+
+ scsi_for_each_sg(SCpnt, sg, count, k) {
+ cpp->sglist[k].address = H2DEV(sg_dma_address(sg));
+ cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(sg));
+ data_len += sg->length;
+ }
+
+ cpp->sg = TRUE;
+ cpp->use_sg = scsi_sg_count(SCpnt);
+ cpp->data_address =
+ H2DEV(pci_map_single(HD(j)->pdev, cpp->sglist,
+ cpp->use_sg * sizeof(struct sg_list),
+ pci_dir));
+ cpp->data_len = H2DEV(data_len);
+
+ } else {
+ pci_dir = PCI_DMA_BIDIRECTIONAL;
+ cpp->data_len = H2DEV(scsi_bufflen(SCpnt));
+ }
}
static void unmap_dma(unsigned int i, unsigned int j) {
@@ -1165,8 +1160,7 @@ static void unmap_dma(unsigned int i, unsigned int j) {
pci_unmap_single(HD(j)->pdev, DEV2H(cpp->sense_addr),
DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE);
- if (SCpnt->use_sg)
- pci_unmap_sg(HD(j)->pdev, SCpnt->request_buffer, SCpnt->use_sg, pci_dir);
+ scsi_dma_unmap(SCpnt);
if (!DEV2H(cpp->data_len)) pci_dir = PCI_DMA_BIDIRECTIONAL;
@@ -1187,9 +1181,9 @@ static void sync_dma(unsigned int i, unsigned int j) {
pci_dma_sync_single_for_cpu(HD(j)->pdev, DEV2H(cpp->sense_addr),
DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE);
- if (SCpnt->use_sg)
- pci_dma_sync_sg_for_cpu(HD(j)->pdev, SCpnt->request_buffer,
- SCpnt->use_sg, pci_dir);
+ if (scsi_sg_count(SCpnt))
+ pci_dma_sync_sg_for_cpu(HD(j)->pdev, scsi_sglist(SCpnt),
+ scsi_sg_count(SCpnt), pci_dir);
if (!DEV2H(cpp->data_len)) pci_dir = PCI_DMA_BIDIRECTIONAL;