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authorJames Bottomley <James.Bottomley@steeleye.com>2005-06-28 18:18:21 +0400
committerJames Bottomley <jejb@titanic.(none)>2005-08-28 20:34:11 +0400
commitc9d297c543f379a27a34082070ed03a8ef846fc2 (patch)
tree4dcc96b31a31a6e7fbc82de31346f395fe78cb0b /drivers/scsi/3w-xxxx.c
parentf189c5cb8ddde0c01838f2b3bc7650e86c097a14 (diff)
downloadlinux-c9d297c543f379a27a34082070ed03a8ef846fc2.tar.xz
[SCSI] fix 3ware raid emulated commands
The 3ware emulated commands all expect they are executing in the use_sg == 0 case, which isn't true either in the block layer rework or an SG_IO ioctl. Fix this by adding the correct kmapping of the first element in the sg list. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/3w-xxxx.c')
-rw-r--r--drivers/scsi/3w-xxxx.c57
1 files changed, 39 insertions, 18 deletions
diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index 973c51fb0fe2..ae9e0203e9de 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -1499,22 +1499,43 @@ static int tw_scsiop_inquiry(TW_Device_Extension *tw_dev, int request_id)
return 0;
} /* End tw_scsiop_inquiry() */
+static void tw_transfer_internal(TW_Device_Extension *tw_dev, int request_id,
+ void *data, unsigned int len)
+{
+ struct scsi_cmnd *cmd = tw_dev->srb[request_id];
+ void *buf;
+ unsigned int transfer_len;
+
+ if (cmd->use_sg) {
+ struct scatterlist *sg =
+ (struct scatterlist *)cmd->request_buffer;
+ buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
+ transfer_len = min(sg->length, len);
+ } else {
+ buf = cmd->request_buffer;
+ transfer_len = min(cmd->request_bufflen, len);
+ }
+
+ memcpy(buf, data, transfer_len);
+
+ if (cmd->use_sg) {
+ struct scatterlist *sg;
+
+ sg = (struct scatterlist *)cmd->request_buffer;
+ kunmap_atomic(buf - sg->offset, KM_IRQ0);
+ }
+}
+
/* This function is called by the isr to complete an inquiry command */
static int tw_scsiop_inquiry_complete(TW_Device_Extension *tw_dev, int request_id)
{
unsigned char *is_unit_present;
- unsigned char *request_buffer;
+ unsigned char request_buffer[36];
TW_Param *param;
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry_complete()\n");
- /* Fill request buffer */
- if (tw_dev->srb[request_id]->request_buffer == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Request buffer NULL.\n");
- return 1;
- }
- request_buffer = tw_dev->srb[request_id]->request_buffer;
- memset(request_buffer, 0, tw_dev->srb[request_id]->request_bufflen);
+ memset(request_buffer, 0, sizeof(request_buffer));
request_buffer[0] = TYPE_DISK; /* Peripheral device type */
request_buffer[1] = 0; /* Device type modifier */
request_buffer[2] = 0; /* No ansi/iso compliance */
@@ -1522,6 +1543,8 @@ static int tw_scsiop_inquiry_complete(TW_Device_Extension *tw_dev, int request_i
memcpy(&request_buffer[8], "3ware ", 8); /* Vendor ID */
sprintf(&request_buffer[16], "Logical Disk %-2d ", tw_dev->srb[request_id]->device->id);
memcpy(&request_buffer[32], TW_DRIVER_VERSION, 3);
+ tw_transfer_internal(tw_dev, request_id, request_buffer,
+ sizeof(request_buffer));
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
if (param == NULL) {
@@ -1612,7 +1635,7 @@ static int tw_scsiop_mode_sense_complete(TW_Device_Extension *tw_dev, int reques
{
TW_Param *param;
unsigned char *flags;
- unsigned char *request_buffer;
+ unsigned char request_buffer[8];
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense_complete()\n");
@@ -1622,8 +1645,7 @@ static int tw_scsiop_mode_sense_complete(TW_Device_Extension *tw_dev, int reques
return 1;
}
flags = (char *)&(param->data[0]);
- request_buffer = tw_dev->srb[request_id]->buffer;
- memset(request_buffer, 0, tw_dev->srb[request_id]->request_bufflen);
+ memset(request_buffer, 0, sizeof(request_buffer));
request_buffer[0] = 0xf; /* mode data length */
request_buffer[1] = 0; /* default medium type */
@@ -1635,6 +1657,8 @@ static int tw_scsiop_mode_sense_complete(TW_Device_Extension *tw_dev, int reques
request_buffer[6] = 0x4; /* WCE on */
else
request_buffer[6] = 0x0; /* WCE off */
+ tw_transfer_internal(tw_dev, request_id, request_buffer,
+ sizeof(request_buffer));
return 0;
} /* End tw_scsiop_mode_sense_complete() */
@@ -1701,17 +1725,12 @@ static int tw_scsiop_read_capacity_complete(TW_Device_Extension *tw_dev, int req
{
unsigned char *param_data;
u32 capacity;
- char *buff;
+ char buff[8];
TW_Param *param;
dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete()\n");
- buff = tw_dev->srb[request_id]->request_buffer;
- if (buff == NULL) {
- printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Request buffer NULL.\n");
- return 1;
- }
- memset(buff, 0, tw_dev->srb[request_id]->request_bufflen);
+ memset(buff, 0, sizeof(buff));
param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
if (param == NULL) {
printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Bad alignment virtual address.\n");
@@ -1739,6 +1758,8 @@ static int tw_scsiop_read_capacity_complete(TW_Device_Extension *tw_dev, int req
buff[6] = (TW_BLOCK_SIZE >> 8) & 0xff;
buff[7] = TW_BLOCK_SIZE & 0xff;
+ tw_transfer_internal(tw_dev, request_id, buff, sizeof(buff));
+
return 0;
} /* End tw_scsiop_read_capacity_complete() */