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[SCSI] stex: use sg buffer copy helper functions 

This replaces stex_internal_copy with scsi_sg_copy_to/from_buffer.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Ed Lin <ed.lin@promise.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
FUJITA Tomonori 2008-03-09 13:44:35 +09:00 committed by James Bottomley
parent d4345028d4
commit 31fe47d437
1 changed files with 10 additions and 56 deletions
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66
drivers/scsi/stex.c
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@ -426,49 +426,13 @@ static int stex_map_sg(struct st_hba *hba,
return 0;
}
static void stex_internal_copy(struct scsi_cmnd *cmd,
const void *src, size_t *count, int sg_count, int direction)
{
size_t lcount;
size_t len;
void *s, *d, *base = NULL;
size_t offset;
if (*count > scsi_bufflen(cmd))
*count = scsi_bufflen(cmd);
lcount = *count;
while (lcount) {
len = lcount;
s = (void *)src;
offset = *count - lcount;
s += offset;
base = scsi_kmap_atomic_sg(scsi_sglist(cmd),
sg_count, &offset, &len);
if (!base) {
*count -= lcount;
return;
}
d = base + offset;
if (direction == ST_TO_CMD)
memcpy(d, s, len);
else
memcpy(s, d, len);
lcount -= len;
scsi_kunmap_atomic_sg(base);
}
}
static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
{
struct st_frame *p;
size_t count = sizeof(struct st_frame);
p = hba->copy_buffer;
stex_internal_copy(ccb->cmd, p, &count, scsi_sg_count(ccb->cmd),
ST_FROM_CMD);
count = scsi_sg_copy_to_buffer(ccb->cmd, p, count);
memset(p->base, 0, sizeof(u32)*6);
*(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0);
p->rom_addr = 0;
@ -486,8 +450,7 @@ static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
p->subid =
hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
stex_internal_copy(ccb->cmd, p, &count, scsi_sg_count(ccb->cmd),
ST_TO_CMD);
count = scsi_sg_copy_from_buffer(ccb->cmd, p, count);
}
static void
@ -554,10 +517,8 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
unsigned char page;
page = cmd->cmnd[2] & 0x3f;
if (page == 0x8 || page == 0x3f) {
size_t cp_len = sizeof(ms10_caching_page);
stex_internal_copy(cmd, ms10_caching_page,
&cp_len, scsi_sg_count(cmd),
ST_TO_CMD);
scsi_sg_copy_from_buffer(cmd, ms10_caching_page,
sizeof(ms10_caching_page));
cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
done(cmd);
} else
@ -586,10 +547,8 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
if (id != host->max_id - 1)
break;
if (lun == 0 && (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
size_t cp_len = sizeof(console_inq_page);
stex_internal_copy(cmd, console_inq_page,
&cp_len, scsi_sg_count(cmd),
ST_TO_CMD);
scsi_sg_copy_from_buffer(cmd, (void *)console_inq_page,
sizeof(console_inq_page));
cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
done(cmd);
} else
@ -606,8 +565,7 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
ver.signature[0] = PASSTHRU_SIGNATURE;
ver.console_id = host->max_id - 1;
ver.host_no = hba->host->host_no;
stex_internal_copy(cmd, &ver, &cp_len,
scsi_sg_count(cmd), ST_TO_CMD);
cp_len = scsi_sg_copy_from_buffer(cmd, &ver, cp_len);
cmd->result = sizeof(ver) == cp_len ?
DID_OK << 16 | COMMAND_COMPLETE << 8 :
DID_ERROR << 16 | COMMAND_COMPLETE << 8;
@ -700,15 +658,12 @@ static void stex_copy_data(struct st_ccb *ccb,
if (ccb->cmd == NULL)
return;
stex_internal_copy(ccb->cmd,
resp->variable, &count, scsi_sg_count(ccb->cmd), ST_TO_CMD);
count = scsi_sg_copy_from_buffer(ccb->cmd, resp->variable, count);
}
static void stex_ys_commands(struct st_hba *hba,
struct st_ccb *ccb, struct status_msg *resp)
{
size_t count;
if (ccb->cmd->cmnd[0] == MGT_CMD &&
resp->scsi_status != SAM_STAT_CHECK_CONDITION) {
scsi_set_resid(ccb->cmd, scsi_bufflen(ccb->cmd) -
@ -724,9 +679,8 @@ static void stex_ys_commands(struct st_hba *hba,
resp->scsi_status == SAM_STAT_GOOD) {
ST_INQ *inq_data;
count = STEX_EXTRA_SIZE;
stex_internal_copy(ccb->cmd, hba->copy_buffer,
&count, scsi_sg_count(ccb->cmd), ST_FROM_CMD);
scsi_sg_copy_to_buffer(ccb->cmd, hba->copy_buffer,
STEX_EXTRA_SIZE);
inq_data = (ST_INQ *)hba->copy_buffer;
if (inq_data->DeviceTypeQualifier != 0)
ccb->srb_status = SRB_STATUS_SELECTION_TIMEOUT;