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path: root/drivers/scsi/megaraid.c
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Diffstat (limited to 'drivers/scsi/megaraid.c')
-rw-r--r--drivers/scsi/megaraid.c147
1 files changed, 37 insertions, 110 deletions
diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
index 3cce75d70263..da56163c30a8 100644
--- a/drivers/scsi/megaraid.c
+++ b/drivers/scsi/megaraid.c
@@ -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;
+ struct scatterlist *sg;
- if (cmd->use_sg) {
- struct scatterlist *sg;
+ sg = scsi_sglist(cmd);
+ buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
- sg = (struct scatterlist *)cmd->request_buffer;
- buf = kmap_atomic(sg->page, KM_IRQ0) +
- sg->offset;
- } else
- buf = cmd->request_buffer;
memset(buf, 0, cmd->cmnd[4]);
- if (cmd->use_sg) {
- struct scatterlist *sg;
+ kunmap_atomic(buf - sg->offset, KM_IRQ0);
- sg = (struct scatterlist *)cmd->request_buffer;
- kunmap_atomic(buf - sg->offset, KM_IRQ0);
- }
cmd->result = (DID_OK << 16);
cmd->scsi_done(cmd);
return NULL;
@@ -1551,23 +1541,15 @@ 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;
-
- if( sgl->page ) {
- c = *(unsigned char *)
+ sgl = scsi_sglist(cmd);
+ if( sgl->page ) {
+ c = *(unsigned char *)
page_address((&sgl[0])->page) +
(&sgl[0])->offset;
- }
- else {
- printk(KERN_WARNING
- "megaraid: invalid sg.\n");
- c = 0;
- }
- }
- else {
- c = *(u8 *)cmd->request_buffer;
+ } else {
+ printk(KERN_WARNING
+ "megaraid: invalid sg.\n");
+ c = 0;
}
if(IS_RAID_CH(adapter, cmd->device->channel) &&
@@ -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 +1733,41 @@ __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++ ) {
+ if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) {
+ sg = scsi_sglist(cmd);
+ scb->dma_h_bulkdata = sg_dma_address(sg);
+ *buf = (u32)scb->dma_h_bulkdata;
+ *len = sg_dma_len(sg);
+ return 0;
+ }
- 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);
+ scsi_for_each_sg(cmd, sg, sgcnt, idx) {
+ if (adapter->has_64bit_addr) {
+ 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);
}
}
@@ -3571,7 +3498,7 @@ megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
/*
* The user passthru structure
*/
- upthru = (mega_passthru __user *)MBOX(uioc)->xferaddr;
+ upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr;
/*
* Copy in the user passthru here.
@@ -3623,7 +3550,7 @@ megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
/*
* Get the user data
*/
- if( copy_from_user(data, (char __user *)uxferaddr,
+ if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
pthru->dataxferlen) ) {
rval = (-EFAULT);
goto freemem_and_return;
@@ -3649,7 +3576,7 @@ megadev_ioctl(struct inode *inode, struct file *filep, unsigned int cmd,
* Is data going up-stream
*/
if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) {
- if( copy_to_user((char __user *)uxferaddr, data,
+ if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
pthru->dataxferlen) ) {
rval = (-EFAULT);
}
@@ -3702,7 +3629,7 @@ freemem_and_return:
/*
* Get the user data
*/
- if( copy_from_user(data, (char __user *)uxferaddr,
+ if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr,
uioc.xferlen) ) {
pci_free_consistent(pdev,
@@ -3742,7 +3669,7 @@ freemem_and_return:
* Is data going up-stream
*/
if( uioc.xferlen && (uioc.flags & UIOC_RD) ) {
- if( copy_to_user((char __user *)uxferaddr, data,
+ if( copy_to_user((char __user *)(unsigned long) uxferaddr, data,
uioc.xferlen) ) {
rval = (-EFAULT);
@@ -4494,7 +4421,7 @@ 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;
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-24 13:20:43 +0000