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Diffstat (limited to 'drivers/scsi/hpsa_cmd.h')
-rw-r--r--drivers/scsi/hpsa_cmd.h20
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h
index 3e0abdf76689..56fb9827681e 100644
--- a/drivers/scsi/hpsa_cmd.h
+++ b/drivers/scsi/hpsa_cmd.h
@@ -23,7 +23,8 @@
/* general boundary defintions */
#define SENSEINFOBYTES 32 /* may vary between hbas */
-#define MAXSGENTRIES 31
+#define MAXSGENTRIES 32
+#define HPSA_SG_CHAIN 0x80000000
#define MAXREPLYQS 256
/* Command Status value */
@@ -305,20 +306,23 @@ struct CommandList {
int cmd_type;
long cmdindex;
struct hlist_node list;
- struct CommandList *prev;
- struct CommandList *next;
struct request *rq;
struct completion *waiting;
- int retry_count;
void *scsi_cmd;
/* on 64 bit architectures, to get this to be 32-byte-aligned
- * it so happens we need no padding, on 32 bit systems,
- * we need 8 bytes of padding. This does that.
+ * it so happens we need PAD_64 bytes of padding, on 32 bit systems,
+ * we need PAD_32 bytes of padding (see below). This does that.
+ * If it happens that 64 bit and 32 bit systems need different
+ * padding, PAD_32 and PAD_64 can be set independently, and.
+ * the code below will do the right thing.
*/
-#define COMMANDLIST_PAD ((8 - sizeof(long))/4 * 8)
+#define IS_32_BIT ((8 - sizeof(long))/4)
+#define IS_64_BIT (!IS_32_BIT)
+#define PAD_32 (4)
+#define PAD_64 (4)
+#define COMMANDLIST_PAD (IS_32_BIT * PAD_32 + IS_64_BIT * PAD_64)
u8 pad[COMMANDLIST_PAD];
-
};
/* Configuration Table Structure */