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Subject[patch 1/2] cciss: SCSI API updates
Patch 1 of 2
This patch updates our SCSI support to no longer use deprecated APIs. I've
also cleaned up the more controversial parts (read mistakes).
Please consider this for inclusion.

Thanks,
mikem

cciss_scsi.c | 53 ++++++++++++++++++++++-------------------------------
1 files changed, 22 insertions(+), 31 deletions(-)
-------------------------------------------------------------------------------
diff -burNp lx269-rc4.orig/drivers/block/cciss_scsi.c lx269-rc4/drivers/block/cciss_scsi.c
--- lx269-rc4.orig/drivers/block/cciss_scsi.c 2004-08-14 00:36:32.000000000 -0500
+++ lx269-rc4/drivers/block/cciss_scsi.c 2004-10-14 09:15:25.056956264 -0500
@@ -28,7 +28,9 @@
through the array controller. Note in particular, neither
physical nor logical disks are presented through the scsi layer. */

-#include "../scsi/scsi.h"
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <asm/atomic.h>
#include <linux/timer.h>
@@ -61,15 +63,8 @@ int cciss_scsi_proc_info(
int length, /* length of data in buffer */
int func); /* 0 == read, 1 == write */

-int cciss_scsi_queue_command (Scsi_Cmnd *cmd, void (* done)(Scsi_Cmnd *));
-#if 0
-int cciss_scsi_abort(Scsi_Cmnd *cmd);
-#if defined SCSI_RESET_SYNCHRONOUS && defined SCSI_RESET_ASYNCHRONOUS
-int cciss_scsi_reset(Scsi_Cmnd *cmd, unsigned int reset_flags);
-#else
-int cciss_scsi_reset(Scsi_Cmnd *cmd);
-#endif
-#endif
+int cciss_scsi_queue_command (struct scsi_cmnd *cmd,
+ void (* done)(struct scsi_cmnd *));

static struct cciss_scsi_hba_t ccissscsi[MAX_CTLR] = {
{ .name = "cciss0", .ndevices = 0 },
@@ -82,7 +77,7 @@ static struct cciss_scsi_hba_t ccissscsi
{ .name = "cciss7", .ndevices = 0 },
};

-static Scsi_Host_Template cciss_driver_template = {
+static struct scsi_host_template cciss_driver_template = {
.module = THIS_MODULE,
.name = "cciss",
.proc_name = "cciss",
@@ -552,7 +547,7 @@ cciss_scsi_setup(int cntl_num)
static void
complete_scsi_command( CommandList_struct *cp, int timeout, __u32 tag)
{
- Scsi_Cmnd *cmd;
+ struct scsi_cmnd *cmd;
ctlr_info_t *ctlr;
u64bit addr64;
ErrorInfo_struct *ei;
@@ -565,7 +560,7 @@ complete_scsi_command( CommandList_struc
return;
}

- cmd = (Scsi_Cmnd *) cp->scsi_cmd;
+ cmd = (struct scsi_cmnd *) cp->scsi_cmd;
ctlr = hba[cp->ctlr];

/* undo the DMA mappings */
@@ -573,14 +568,14 @@ complete_scsi_command( CommandList_struc
if (cmd->use_sg) {
pci_unmap_sg(ctlr->pdev,
cmd->buffer, cmd->use_sg,
- scsi_to_pci_dma_dir(cmd->sc_data_direction));
+ cmd->sc_data_direction);
}
else if (cmd->request_bufflen) {
addr64.val32.lower = cp->SG[0].Addr.lower;
addr64.val32.upper = cp->SG[0].Addr.upper;
pci_unmap_single(ctlr->pdev, (dma_addr_t) addr64.val,
cmd->request_bufflen,
- scsi_to_pci_dma_dir(cmd->sc_data_direction));
+ cmd->sc_data_direction);
}

cmd->result = (DID_OK << 16); /* host byte */
@@ -783,9 +778,8 @@ cciss_scsi_do_simple_cmd(ctlr_info_t *c,
cp->Request.Type.Direction = direction;

/* Fill in the SG list and do dma mapping */
- cciss_map_one(c->pdev, cp,
- (unsigned char *) buf, bufsize,
- scsi_to_pci_dma_dir(SCSI_DATA_READ));
+ cciss_map_one(c->pdev, cp, (unsigned char *) buf,
+ bufsize, DMA_FROM_DEVICE);

cp->waiting = &wait;

@@ -799,9 +793,7 @@ cciss_scsi_do_simple_cmd(ctlr_info_t *c,
wait_for_completion(&wait);

/* undo the dma mapping */
- cciss_unmap_one(c->pdev, cp, bufsize,
- scsi_to_pci_dma_dir(SCSI_DATA_READ));
-
+ cciss_unmap_one(c->pdev, cp, bufsize, DMA_FROM_DEVICE);
return(0);
}

@@ -1180,14 +1172,14 @@ cciss_scsi_info(struct Scsi_Host *sa)
}


-/* cciss_scatter_gather takes a Scsi_Cmnd, (cmd), and does the pci
+/* cciss_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
dma mapping and fills in the scatter gather entries of the
cciss command, cp. */

static void
cciss_scatter_gather(struct pci_dev *pdev,
CommandList_struct *cp,
- Scsi_Cmnd *cmd)
+ struct scsi_cmnd *cmd)
{
unsigned int use_sg, nsegs=0, len;
struct scatterlist *scatter = (struct scatterlist *) cmd->buffer;
@@ -1200,7 +1192,7 @@ cciss_scatter_gather(struct pci_dev *pde
addr64 = (__u64) pci_map_single(pdev,
cmd->request_buffer,
cmd->request_bufflen,
- scsi_to_pci_dma_dir(cmd->sc_data_direction));
+ cmd->sc_data_direction);

cp->SG[0].Addr.lower =
(__u32) (addr64 & (__u64) 0x00000000FFFFFFFF);
@@ -1213,7 +1205,7 @@ cciss_scatter_gather(struct pci_dev *pde
else if (cmd->use_sg <= MAXSGENTRIES) { /* not too many addrs? */

use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg,
- scsi_to_pci_dma_dir(cmd->sc_data_direction));
+ cmd->sc_data_direction);

for (nsegs=0; nsegs < use_sg; nsegs++) {
addr64 = (__u64) sg_dma_address(&scatter[nsegs]);
@@ -1234,7 +1226,7 @@ cciss_scatter_gather(struct pci_dev *pde


int
-cciss_scsi_queue_command (Scsi_Cmnd *cmd, void (* done)(Scsi_Cmnd *))
+cciss_scsi_queue_command (struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
{
ctlr_info_t **c;
int ctlr, rc;
@@ -1302,11 +1294,10 @@ cciss_scsi_queue_command (Scsi_Cmnd *cmd
cp->Request.Type.Attribute = ATTR_SIMPLE;
switch(cmd->sc_data_direction)
{
- case SCSI_DATA_WRITE: cp->Request.Type.Direction = XFER_WRITE; break;
- case SCSI_DATA_READ: cp->Request.Type.Direction = XFER_READ; break;
- case SCSI_DATA_NONE: cp->Request.Type.Direction = XFER_NONE; break;
-
- case SCSI_DATA_UNKNOWN:
+ case DMA_TO_DEVICE: cp->Request.Type.Direction = XFER_WRITE; break;
+ case DMA_FROM_DEVICE: cp->Request.Type.Direction = XFER_READ; break;
+ case DMA_NONE: cp->Request.Type.Direction = XFER_NONE; break;
+ case DMA_BIDIRECTIONAL:
// This can happen if a buggy application does a scsi passthru
// and sets both inlen and outlen to non-zero. ( see
// ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
-
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