Building Areca arcmsr driver outside kernel source tree
From: Matt Dainty
Date: Sat Mar 19 2005 - 13:48:46 EST
To get the arcmsr driver working with CentOS/RHEL 4 and using the
facility to build kernel modules outside of the kernel source tree, I
found the attached patch was necessary to remove the dependencies on the
internal drivers/scsi/scsi*.h header files and to instead use the public
ones found under include/scsi/ which are provided by the kernel-*-devel
packages.
It builds, loads and appears to work with my limited testing on an
ARC1120. I was just wanting to know if this was the right way to fix it?
Once the driver is in the main kernel tree it's largely irrelevant, but
while CentOS/RHEL 4 use the older kernel without the driver it's a PITA
to maintain kernel packages with this one driver added, when a separate
package containing just the driver is much easier.
The patch is based on the 1.20.00.06 driver that was added to
2.6.11-mm4.
Thanks
Matt
--- linux-2.6.9/drivers/scsi/arcmsr/arcmsr.c.orig 2005-03-19 17:50:52.623490488 +0000
+++ linux-2.6.9/drivers/scsi/arcmsr/arcmsr.c 2005-03-19 18:03:11.484166592 +0000
@@ -108,7 +108,9 @@
#include <linux/init.h>
#include <linux/spinlock.h>
#include <scsi/scsi_host.h>
-#include "../scsi.h"
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
#include "arcmsr.h"
#endif
/*
@@ -138,10 +140,11 @@
struct block_device *bdev, sector_t capacity,
int *info);
static int arcmsr_release(struct Scsi_Host *);
-static int arcmsr_queue_command(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *));
-static int arcmsr_cmd_abort(Scsi_Cmnd *);
-static int arcmsr_bus_reset(Scsi_Cmnd *);
-static int arcmsr_ioctl(Scsi_Device * dev, int ioctl_cmd, void *arg);
+static int arcmsr_queue_command(struct scsi_cmnd * cmd,
+ void (*done) (struct scsi_cmnd *));
+static int arcmsr_cmd_abort(struct scsi_cmnd *);
+static int arcmsr_bus_reset(struct scsi_cmnd *);
+static int arcmsr_ioctl(struct scsi_device * dev, int ioctl_cmd, void *arg);
static int __devinit arcmsr_device_probe(struct pci_dev *pPCI_DEV,
const struct pci_device_id *id);
static void arcmsr_device_remove(struct pci_dev *pPCI_DEV);
@@ -152,7 +155,7 @@
static u_int8_t arcmsr_wait_msgint_ready(PACB pACB);
static const char *arcmsr_info(struct Scsi_Host *);
-static Scsi_Host_Template arcmsr_scsi_host_template = {
+static struct scsi_host_template arcmsr_scsi_host_template = {
.module = THIS_MODULE,
.proc_name = "arcmsr",
.proc_info = arcmsr_proc_info,
@@ -417,7 +420,7 @@
************************************************************************
************************************************************************
*/
-static int arcmsr_scsi_host_template_init(Scsi_Host_Template * psht)
+static int arcmsr_scsi_host_template_init(struct scsi_host_template * psht)
{
psht->proc_name = "arcmsr";
memset(pHCBARC, 0, sizeof(struct _HCBARC));
@@ -459,19 +462,19 @@
static void arcmsr_pci_unmap_dma(PCCB pCCB)
{
PACB pACB = pCCB->pACB;
- Scsi_Cmnd *pcmd = pCCB->pcmd;
+ struct scsi_cmnd *pcmd = pCCB->pcmd;
if (pcmd->use_sg != 0) {
struct scatterlist *sl;
sl = (struct scatterlist *)pcmd->request_buffer;
pci_unmap_sg(pACB->pPCI_DEV, sl, pcmd->use_sg,
- scsi_to_pci_dma_dir(pcmd->sc_data_direction));
+ pcmd->sc_data_direction);
} else if (pcmd->request_bufflen != 0) {
pci_unmap_single(pACB->pPCI_DEV,
(dma_addr_t) (unsigned long)pcmd->SCp.ptr,
pcmd->request_bufflen,
- scsi_to_pci_dma_dir(pcmd->sc_data_direction));
+ pcmd->sc_data_direction);
}
return;
}
@@ -575,7 +578,7 @@
**
**********************************************************************
*/
-static void arcmsr_cmd_done(Scsi_Cmnd * pcmd)
+static void arcmsr_cmd_done(struct scsi_cmnd * pcmd)
{
pcmd->scsi_done(pcmd);
return;
@@ -608,7 +611,7 @@
{
unsigned long flag;
PACB pACB = pCCB->pACB;
- Scsi_Cmnd *pcmd = pCCB->pcmd;
+ struct scsi_cmnd *pcmd = pCCB->pcmd;
#if ARCMSR_DEBUG0
printk
@@ -635,7 +638,7 @@
*/
static void arcmsr_report_SenseInfoBuffer(PCCB pCCB)
{
- Scsi_Cmnd *pcmd = pCCB->pcmd;
+ struct scsi_cmnd *pcmd = pCCB->pcmd;
PSENSE_DATA psenseBuffer = (PSENSE_DATA) pcmd->sense_buffer;
#if ARCMSR_DEBUG0
printk("arcmsr_report_SenseInfoBuffer...........\n");
@@ -804,7 +807,7 @@
** PAGE_SIZE=4096 or 8192,PAGE_SHIFT=12
**********************************************************************
*/
-static void arcmsr_build_ccb(PACB pACB, PCCB pCCB, Scsi_Cmnd * pcmd)
+static void arcmsr_build_ccb(PACB pACB, PCCB pCCB, struct scsi_cmnd * pcmd)
{
PARCMSR_CDB pARCMSR_CDB = (PARCMSR_CDB) & pCCB->arcmsr_cdb;
int8_t *psge = (int8_t *) & pARCMSR_CDB->u;
@@ -831,7 +834,7 @@
sl = (struct scatterlist *)pcmd->request_buffer;
sgcount =
pci_map_sg(pACB->pPCI_DEV, sl, pcmd->use_sg,
- scsi_to_pci_dma_dir(pcmd->sc_data_direction));
+ pcmd->sc_data_direction);
/* map stor port SG list to our iop SG List. */
for (i = 0; i < sgcount; i++) {
/* Get the physical address of the current data pointer */
@@ -902,8 +905,7 @@
dma_addr =
pci_map_single(pACB->pPCI_DEV, pcmd->request_buffer,
pcmd->request_bufflen,
- scsi_to_pci_dma_dir(pcmd->
- sc_data_direction));
+ pcmd->sc_data_direction);
pcmd->SCp.ptr = (char *)(unsigned long)dma_addr;
address_lo = cpu_to_le32(dma_addr_lo32(dma_addr));
address_hi = cpu_to_le32(dma_addr_hi32(dma_addr));
@@ -1651,7 +1653,7 @@
**
************************************************************************
*/
-static int arcmsr_ioctl(Scsi_Device * dev, int ioctl_cmd, void *arg)
+static int arcmsr_ioctl(struct scsi_device * dev, int ioctl_cmd, void *arg)
{
PACB pACB;
int32_t match = 0x55AA, i;
@@ -1855,7 +1857,8 @@
**} Scsi_Pointer;
***********************************************************************
*/
-static int arcmsr_queue_command(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *))
+static int arcmsr_queue_command(struct scsi_cmnd * cmd,
+ void (*done) (struct scsi_cmnd *))
{
struct Scsi_Host *host = cmd->device->host;
PACB pACB = (PACB) host->hostdata;
@@ -1966,7 +1969,7 @@
**
****************************************************************************
*/
-static int arcmsr_bus_reset(Scsi_Cmnd * cmd)
+static int arcmsr_bus_reset(struct scsi_cmnd * cmd)
{
PACB pACB;
@@ -1983,7 +1986,7 @@
**
*****************************************************************************************
*/
-static int arcmsr_seek_cmd2abort(Scsi_Cmnd * pabortcmd)
+static int arcmsr_seek_cmd2abort(struct scsi_cmnd * pabortcmd)
{
PACB pACB = (PACB) pabortcmd->device->host->hostdata;
PCCB pCCB;
@@ -2068,7 +2071,7 @@
**
*****************************************************************************************
*/
-static int arcmsr_cmd_abort(Scsi_Cmnd * cmd)
+static int arcmsr_cmd_abort(struct scsi_cmnd * cmd)
{
int error;
--- linux-2.6.9/drivers/scsi/arcmsr/arcmsr.h.orig 2005-03-19 17:55:45.642944760 +0000
+++ linux-2.6.9/drivers/scsi/arcmsr/arcmsr.h 2005-03-19 17:55:57.857087928 +0000
@@ -647,7 +647,7 @@
uint32_t reserved1; /* 508-511 */
/* ======================512+32 bytes======================== */
#if BITS_PER_LONG == 64
- Scsi_Cmnd *pcmd; /* 512-515 516-519 pointer of linux scsi command */
+ struct scsi_cmnd *pcmd; /* 512-515 516-519 pointer of linux scsi command */
struct _ACB *pACB; /* 520-523 524-527 */
uint16_t ccb_flags; /* 528-529 */
@@ -663,7 +663,7 @@
#define ARCMSR_CCB_ILLEGAL 0xFFFF
uint32_t reserved2[3]; /* 532-535 536-539 540-543 */
#else
- Scsi_Cmnd *pcmd; /* 512-515 pointer of linux scsi command */
+ struct scsi_cmnd *pcmd; /* 512-515 pointer of linux scsi command */
struct _ACB *pACB; /* 516-519 */
uint16_t ccb_flags; /* 520-521 */