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authorStefan Richter <stefanr@s5r6.in-berlin.de>2005-12-13 05:03:24 +0100
committerJody McIntyre <scjody@modernduck.com>2005-12-13 05:03:24 +0100
commit43863eba763e0c91e33e342ce5b7650fea594a53 (patch)
treea353684ea6e69b906f9fc987f5ff74770867e914 /drivers/ieee1394
parentieee1394: run high-level updates before high-level probes (diff)
downloadlinux-43863eba763e0c91e33e342ce5b7650fea594a53.tar.xz
linux-43863eba763e0c91e33e342ce5b7650fea594a53.zip
sbp2: delete sbp2scsi_direction_table
DMA_BIDIRECTIONAL data direction may be handled properly by Linux in the future. For now, reject it instead to convert it to another direction. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Jody McIntyre <scjody@modernduck.com>
Diffstat (limited to 'drivers/ieee1394')
-rw-r--r--drivers/ieee1394/sbp2.c45
-rw-r--r--drivers/ieee1394/sbp2.h40
2 files changed, 17 insertions, 68 deletions
diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c
index f0763b797238..372a7726063c 100644
--- a/drivers/ieee1394/sbp2.c
+++ b/drivers/ieee1394/sbp2.c
@@ -1740,28 +1740,15 @@ static int sbp2_create_command_orb(struct scsi_id_instance_data *scsi_id,
command_orb->misc |= ORB_SET_SPEED(scsi_id->speed_code);
command_orb->misc |= ORB_SET_NOTIFY(1); /* Notify us when complete */
- /*
- * Get the direction of the transfer. If the direction is unknown, then use our
- * goofy table as a back-up.
- */
- switch (dma_dir) {
- case DMA_NONE:
+ if (dma_dir == DMA_NONE)
orb_direction = ORB_DIRECTION_NO_DATA_TRANSFER;
- break;
- case DMA_TO_DEVICE:
+ else if (dma_dir == DMA_TO_DEVICE && scsi_request_bufflen)
orb_direction = ORB_DIRECTION_WRITE_TO_MEDIA;
- break;
- case DMA_FROM_DEVICE:
+ else if (dma_dir == DMA_FROM_DEVICE && scsi_request_bufflen)
orb_direction = ORB_DIRECTION_READ_FROM_MEDIA;
- break;
- case DMA_BIDIRECTIONAL:
- default:
- SBP2_ERR("SCSI data transfer direction not specified. "
- "Update the SBP2 direction table in sbp2.h if "
- "necessary for your application");
- __scsi_print_command(scsi_cmd);
- orb_direction = sbp2scsi_direction_table[*scsi_cmd];
- break;
+ else {
+ SBP2_WARN("Falling back to DMA_NONE");
+ orb_direction = ORB_DIRECTION_NO_DATA_TRANSFER;
}
/*
@@ -1880,16 +1867,6 @@ static int sbp2_create_command_orb(struct scsi_id_instance_data *scsi_id,
command_orb->misc |= ORB_SET_DATA_SIZE(scsi_request_bufflen);
command_orb->misc |= ORB_SET_DIRECTION(orb_direction);
- /*
- * Sanity, in case our direction table is not
- * up-to-date
- */
- if (!scsi_request_bufflen) {
- command_orb->data_descriptor_hi = 0x0;
- command_orb->data_descriptor_lo = 0x0;
- command_orb->misc |= ORB_SET_DIRECTION(1);
- }
-
} else {
/*
* Need to turn this into page tables, since the
@@ -2371,6 +2348,16 @@ static int sbp2scsi_queuecommand(struct scsi_cmnd *SCpnt,
}
/*
+ * Bidirectional commands are not yet implemented,
+ * and unknown transfer direction not handled.
+ */
+ if (SCpnt->sc_data_direction == DMA_BIDIRECTIONAL) {
+ SBP2_ERR("Cannot handle DMA_BIDIRECTIONAL - rejecting command");
+ result = DID_ERROR << 16;
+ goto done;
+ }
+
+ /*
* Try and send our SCSI command
*/
if (sbp2_send_command(scsi_id, SCpnt, done)) {
diff --git a/drivers/ieee1394/sbp2.h b/drivers/ieee1394/sbp2.h
index abc647bae5b1..8e227c52b72f 100644
--- a/drivers/ieee1394/sbp2.h
+++ b/drivers/ieee1394/sbp2.h
@@ -260,45 +260,7 @@ struct sbp2_status_block {
#define SBP2_MAX_SG_ELEMENT_LENGTH 0xf000
#define SBP2_MAX_UDS_PER_NODE 16 /* Maximum scsi devices per node */
#define SBP2_MAX_SECTORS 255 /* Max sectors supported */
-
-/*
- * SCSI direction table...
- * (now used as a back-up in case the direction passed down from above is "unknown")
- *
- * DIN = IN data direction
- * DOU = OUT data direction
- * DNO = No data transfer
- * DUN = Unknown data direction
- *
- * Opcode 0xec (Teac specific "opc execute") possibly should be DNO,
- * but we'll change it when somebody reports a problem with this.
- */
-#define DIN ORB_DIRECTION_READ_FROM_MEDIA
-#define DOU ORB_DIRECTION_WRITE_TO_MEDIA
-#define DNO ORB_DIRECTION_NO_DATA_TRANSFER
-#define DUN DIN
-
-static unchar sbp2scsi_direction_table[0x100] = {
- DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
- DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
- DIN,DUN,DIN,DIN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
- DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
- DOU,DOU,DIN,DIN,DIN,DNO,DIN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DNO,DUN,
- DUN,DIN,DIN,DNO,DNO,DOU,DUN,DUN,DNO,DIN,DIN,DNO,DIN,DOU,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
- DUN,DNO,DOU,DOU,DIN,DNO,DNO,DNO,DIN,DNO,DOU,DUN,DNO,DIN,DOU,DOU,
- DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DIN,DNO,DNO,DNO,DIN,DIN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
- DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
-};
-
-/* This should be safe */
-#define SBP2_MAX_CMDS 8
+#define SBP2_MAX_CMDS 8 /* This should be safe */
/* This is the two dma types we use for cmd_dma below */
enum cmd_dma_types {