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authorAl Viro <viro@parcelfarce.linux.theplanet.co.uk>2005-05-16 01:59:55 +0100
committerJames Bottomley <jejb@mulgrave.(none)>2005-05-26 08:41:15 -0500
commit631e8a1398ce4cfef8b30678d51daf0c64313a09 (patch)
tree14d3b601b4a7160568c58d53a94a0a4711094588 /drivers/ieee1394
parent53222b906903fd861dc24ebccfa07ee125941313 (diff)
[SCSI] TYPE_RBC cache fixes (sbp2.c affected)
a) TYPE_SDAD renamed to TYPE_RBC and taken to scsi.h b) in sbp2.c remapping of TYPE_RPB to TYPE_DISK turned off c) relevant places in midlayer and sd.c taught to accept TYPE_RBC d) sd.c::sd_read_cache_type() looks into page 6 when dealing with TYPE_RBC - these guys have writeback cache flag there and are not guaranteed to have page 8 at all. e) sd_read_cache_type() got an extra sanity check - it checks that it got the page it asked for before using its contents. And screams if mismatch had happened. Rationale: there are broken devices out there that are "helpful" enough to go for "I don't have a page you've asked for, here, have another one". For example, PL3507 had been caught doing just that... f) sbp2 sets sdev->use_10_for_rw and sdev->use_10_for_ms instead of bothering to remap READ6/WRITE6/MOD_SENSE, so most of the conversions in there are gone now. Incidentally, I wonder if USB storage devices that have no mode page 8 are simply RBC ones. I haven't touched that, but it might be interesting to check... Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/ieee1394')
-rw-r--r--drivers/ieee1394/sbp2.c130
-rw-r--r--drivers/ieee1394/sbp2.h4
2 files changed, 3 insertions, 131 deletions
diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c
index 00c7b958361a..094e646ed4de 100644
--- a/drivers/ieee1394/sbp2.c
+++ b/drivers/ieee1394/sbp2.c
@@ -1070,7 +1070,7 @@ static int sbp2_handle_physdma_read(struct hpsb_host *host, int nodeid, quadlet_
static __inline__ int sbp2_command_conversion_device_type(u8 device_type)
{
return (((device_type == TYPE_DISK) ||
- (device_type == TYPE_SDAD) ||
+ (device_type == TYPE_RBC) ||
(device_type == TYPE_ROM)) ? 1:0);
}
@@ -2111,102 +2111,6 @@ static int sbp2_send_command(struct scsi_id_instance_data *scsi_id,
*/
static void sbp2_check_sbp2_command(struct scsi_id_instance_data *scsi_id, unchar *cmd)
{
- unchar new_cmd[16];
- u8 device_type = SBP2_DEVICE_TYPE (scsi_id->sbp2_device_type_and_lun);
-
- SBP2_DEBUG("sbp2_check_sbp2_command");
-
- switch (*cmd) {
-
- case READ_6:
-
- if (sbp2_command_conversion_device_type(device_type)) {
-
- SBP2_DEBUG("Convert READ_6 to READ_10");
-
- /*
- * Need to turn read_6 into read_10
- */
- new_cmd[0] = 0x28;
- new_cmd[1] = (cmd[1] & 0xe0);
- new_cmd[2] = 0x0;
- new_cmd[3] = (cmd[1] & 0x1f);
- new_cmd[4] = cmd[2];
- new_cmd[5] = cmd[3];
- new_cmd[6] = 0x0;
- new_cmd[7] = 0x0;
- new_cmd[8] = cmd[4];
- new_cmd[9] = cmd[5];
-
- memcpy(cmd, new_cmd, 10);
-
- }
-
- break;
-
- case WRITE_6:
-
- if (sbp2_command_conversion_device_type(device_type)) {
-
- SBP2_DEBUG("Convert WRITE_6 to WRITE_10");
-
- /*
- * Need to turn write_6 into write_10
- */
- new_cmd[0] = 0x2a;
- new_cmd[1] = (cmd[1] & 0xe0);
- new_cmd[2] = 0x0;
- new_cmd[3] = (cmd[1] & 0x1f);
- new_cmd[4] = cmd[2];
- new_cmd[5] = cmd[3];
- new_cmd[6] = 0x0;
- new_cmd[7] = 0x0;
- new_cmd[8] = cmd[4];
- new_cmd[9] = cmd[5];
-
- memcpy(cmd, new_cmd, 10);
-
- }
-
- break;
-
- case MODE_SENSE:
-
- if (sbp2_command_conversion_device_type(device_type)) {
-
- SBP2_DEBUG("Convert MODE_SENSE_6 to MODE_SENSE_10");
-
- /*
- * Need to turn mode_sense_6 into mode_sense_10
- */
- new_cmd[0] = 0x5a;
- new_cmd[1] = cmd[1];
- new_cmd[2] = cmd[2];
- new_cmd[3] = 0x0;
- new_cmd[4] = 0x0;
- new_cmd[5] = 0x0;
- new_cmd[6] = 0x0;
- new_cmd[7] = 0x0;
- new_cmd[8] = cmd[4];
- new_cmd[9] = cmd[5];
-
- memcpy(cmd, new_cmd, 10);
-
- }
-
- break;
-
- case MODE_SELECT:
-
- /*
- * TODO. Probably need to change mode select to 10 byte version
- */
-
- default:
- break;
- }
-
- return;
}
/*
@@ -2272,14 +2176,6 @@ static void sbp2_check_sbp2_response(struct scsi_id_instance_data *scsi_id,
}
/*
- * Check for Simple Direct Access Device and change it to TYPE_DISK
- */
- if ((scsi_buf[0] & 0x1f) == TYPE_SDAD) {
- SBP2_DEBUG("Changing TYPE_SDAD to TYPE_DISK");
- scsi_buf[0] &= 0xe0;
- }
-
- /*
* Fix ansi revision and response data format
*/
scsi_buf[2] |= 2;
@@ -2287,27 +2183,6 @@ static void sbp2_check_sbp2_response(struct scsi_id_instance_data *scsi_id,
break;
- case MODE_SENSE:
-
- if (sbp2_command_conversion_device_type(device_type)) {
-
- SBP2_DEBUG("Modify mode sense response (10 byte version)");
-
- scsi_buf[0] = scsi_buf[1]; /* Mode data length */
- scsi_buf[1] = scsi_buf[2]; /* Medium type */
- scsi_buf[2] = scsi_buf[3]; /* Device specific parameter */
- scsi_buf[3] = scsi_buf[7]; /* Block descriptor length */
- memcpy(scsi_buf + 4, scsi_buf + 8, scsi_buf[0]);
- }
-
- break;
-
- case MODE_SELECT:
-
- /*
- * TODO. Probably need to change mode select to 10 byte version
- */
-
default:
break;
}
@@ -2690,7 +2565,8 @@ static void sbp2scsi_complete_command(struct scsi_id_instance_data *scsi_id,
static int sbp2scsi_slave_configure (struct scsi_device *sdev)
{
blk_queue_dma_alignment(sdev->request_queue, (512 - 1));
-
+ sdev->use_10_for_rw = 1;
+ sdev->use_10_for_ms = 1;
return 0;
}
diff --git a/drivers/ieee1394/sbp2.h b/drivers/ieee1394/sbp2.h
index a84b039a05b9..cd425be74841 100644
--- a/drivers/ieee1394/sbp2.h
+++ b/drivers/ieee1394/sbp2.h
@@ -266,10 +266,6 @@ struct sbp2_status_block {
#define SBP2_MAX_UDS_PER_NODE 16 /* Maximum scsi devices per node */
#define SBP2_MAX_SECTORS 255 /* Max sectors supported */
-#ifndef TYPE_SDAD
-#define TYPE_SDAD 0x0e /* simplified direct access device */
-#endif
-
/*
* SCSI direction table...
* (now used as a back-up in case the direction passed down from above is "unknown")