[SCSI] megaraid_old: 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> Acked-by: Sumant Patro <sumant.patro@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
parent
2b14ec7878
commit
3f6270ef76
|
@ -523,10 +523,8 @@ mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
|
|||
/*
|
||||
* filter the internal and ioctl commands
|
||||
*/
|
||||
if((cmd->cmnd[0] == MEGA_INTERNAL_CMD)) {
|
||||
return cmd->request_buffer;
|
||||
}
|
||||
|
||||
if((cmd->cmnd[0] == MEGA_INTERNAL_CMD))
|
||||
return (scb_t *)cmd->host_scribble;
|
||||
|
||||
/*
|
||||
* We know what channels our logical drives are on - mega_find_card()
|
||||
|
@ -657,22 +655,14 @@ mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
|
|||
|
||||
case MODE_SENSE: {
|
||||
char *buf;
|
||||
|
||||
if (cmd->use_sg) {
|
||||
struct scatterlist *sg;
|
||||
|
||||
sg = (struct scatterlist *)cmd->request_buffer;
|
||||
buf = kmap_atomic(sg->page, KM_IRQ0) +
|
||||
sg->offset;
|
||||
} else
|
||||
buf = cmd->request_buffer;
|
||||
sg = scsi_sglist(cmd);
|
||||
buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
|
||||
|
||||
memset(buf, 0, cmd->cmnd[4]);
|
||||
if (cmd->use_sg) {
|
||||
struct scatterlist *sg;
|
||||
|
||||
sg = (struct scatterlist *)cmd->request_buffer;
|
||||
kunmap_atomic(buf - sg->offset, KM_IRQ0);
|
||||
}
|
||||
|
||||
cmd->result = (DID_OK << 16);
|
||||
cmd->scsi_done(cmd);
|
||||
return NULL;
|
||||
|
@ -1551,24 +1541,16 @@ mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status)
|
|||
islogical = adapter->logdrv_chan[cmd->device->channel];
|
||||
if( cmd->cmnd[0] == INQUIRY && !islogical ) {
|
||||
|
||||
if( cmd->use_sg ) {
|
||||
sgl = (struct scatterlist *)
|
||||
cmd->request_buffer;
|
||||
|
||||
sgl = scsi_sglist(cmd);
|
||||
if( sgl->page ) {
|
||||
c = *(unsigned char *)
|
||||
page_address((&sgl[0])->page) +
|
||||
(&sgl[0])->offset;
|
||||
}
|
||||
else {
|
||||
} else {
|
||||
printk(KERN_WARNING
|
||||
"megaraid: invalid sg.\n");
|
||||
c = 0;
|
||||
}
|
||||
}
|
||||
else {
|
||||
c = *(u8 *)cmd->request_buffer;
|
||||
}
|
||||
|
||||
if(IS_RAID_CH(adapter, cmd->device->channel) &&
|
||||
((c & 0x1F ) == TYPE_DISK)) {
|
||||
|
@ -1704,30 +1686,14 @@ mega_rundoneq (adapter_t *adapter)
|
|||
static void
|
||||
mega_free_scb(adapter_t *adapter, scb_t *scb)
|
||||
{
|
||||
unsigned long length;
|
||||
|
||||
switch( scb->dma_type ) {
|
||||
|
||||
case MEGA_DMA_TYPE_NONE:
|
||||
break;
|
||||
|
||||
case MEGA_BULK_DATA:
|
||||
if (scb->cmd->use_sg == 0)
|
||||
length = scb->cmd->request_bufflen;
|
||||
else {
|
||||
struct scatterlist *sgl =
|
||||
(struct scatterlist *)scb->cmd->request_buffer;
|
||||
length = sgl->length;
|
||||
}
|
||||
pci_unmap_page(adapter->dev, scb->dma_h_bulkdata,
|
||||
length, scb->dma_direction);
|
||||
break;
|
||||
|
||||
case MEGA_SGLIST:
|
||||
pci_unmap_sg(adapter->dev, scb->cmd->request_buffer,
|
||||
scb->cmd->use_sg, scb->dma_direction);
|
||||
scsi_dma_unmap(scb->cmd);
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
@ -1767,80 +1733,33 @@ __mega_busywait_mbox (adapter_t *adapter)
|
|||
static int
|
||||
mega_build_sglist(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len)
|
||||
{
|
||||
struct scatterlist *sgl;
|
||||
struct page *page;
|
||||
unsigned long offset;
|
||||
unsigned int length;
|
||||
struct scatterlist *sg;
|
||||
Scsi_Cmnd *cmd;
|
||||
int sgcnt;
|
||||
int idx;
|
||||
|
||||
cmd = scb->cmd;
|
||||
|
||||
/* Scatter-gather not used */
|
||||
if( cmd->use_sg == 0 || (cmd->use_sg == 1 &&
|
||||
!adapter->has_64bit_addr)) {
|
||||
|
||||
if (cmd->use_sg == 0) {
|
||||
page = virt_to_page(cmd->request_buffer);
|
||||
offset = offset_in_page(cmd->request_buffer);
|
||||
length = cmd->request_bufflen;
|
||||
} else {
|
||||
sgl = (struct scatterlist *)cmd->request_buffer;
|
||||
page = sgl->page;
|
||||
offset = sgl->offset;
|
||||
length = sgl->length;
|
||||
}
|
||||
|
||||
scb->dma_h_bulkdata = pci_map_page(adapter->dev,
|
||||
page, offset,
|
||||
length,
|
||||
scb->dma_direction);
|
||||
scb->dma_type = MEGA_BULK_DATA;
|
||||
|
||||
/*
|
||||
* We need to handle special 64-bit commands that need a
|
||||
* minimum of 1 SG
|
||||
*/
|
||||
if( adapter->has_64bit_addr ) {
|
||||
scb->sgl64[0].address = scb->dma_h_bulkdata;
|
||||
scb->sgl64[0].length = length;
|
||||
*buf = (u32)scb->sgl_dma_addr;
|
||||
*len = (u32)length;
|
||||
return 1;
|
||||
}
|
||||
else {
|
||||
*buf = (u32)scb->dma_h_bulkdata;
|
||||
*len = (u32)length;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
sgl = (struct scatterlist *)cmd->request_buffer;
|
||||
|
||||
/*
|
||||
* Copy Scatter-Gather list info into controller structure.
|
||||
*
|
||||
* The number of sg elements returned must not exceed our limit
|
||||
*/
|
||||
sgcnt = pci_map_sg(adapter->dev, sgl, cmd->use_sg,
|
||||
scb->dma_direction);
|
||||
sgcnt = scsi_dma_map(cmd);
|
||||
|
||||
scb->dma_type = MEGA_SGLIST;
|
||||
|
||||
BUG_ON(sgcnt > adapter->sglen);
|
||||
BUG_ON(sgcnt > adapter->sglen || sgcnt < 0);
|
||||
|
||||
*len = 0;
|
||||
|
||||
for( idx = 0; idx < sgcnt; idx++, sgl++ ) {
|
||||
|
||||
scsi_for_each_sg(cmd, sg, sgcnt, idx) {
|
||||
if (adapter->has_64bit_addr) {
|
||||
scb->sgl64[idx].address = sg_dma_address(sgl);
|
||||
*len += scb->sgl64[idx].length = sg_dma_len(sgl);
|
||||
}
|
||||
else {
|
||||
scb->sgl[idx].address = sg_dma_address(sgl);
|
||||
*len += scb->sgl[idx].length = sg_dma_len(sgl);
|
||||
scb->sgl64[idx].address = sg_dma_address(sg);
|
||||
*len += scb->sgl64[idx].length = sg_dma_len(sg);
|
||||
} else {
|
||||
scb->sgl[idx].address = sg_dma_address(sg);
|
||||
*len += scb->sgl[idx].length = sg_dma_len(sg);
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -4494,7 +4413,7 @@ mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru)
|
|||
scmd->device = sdev;
|
||||
|
||||
scmd->device->host = adapter->host;
|
||||
scmd->request_buffer = (void *)scb;
|
||||
scmd->host_scribble = (void *)scb;
|
||||
scmd->cmnd[0] = MEGA_INTERNAL_CMD;
|
||||
|
||||
scb->state |= SCB_ACTIVE;
|
||||
|
|
Loading…
Reference in a new issue