[SCSI] aacraid: sgraw command support

Received from Mark Salyzyn from Adaptec:

This patch adds support for the new raw io command. This new command
offers much larger io commands, is more friendly to the internal firmware
structure requiring less translation efforts by the firmware and offers
support for targets greater than 2TB (patch to support >2TB will
be sent in the future).

Signed-off-by: Mark Haverkamp <markh@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 42 insertions, 1 deletions

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index 6f4906ee9a5e..bc91e7ce5e59 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -114,6 +114,22 @@ struct user_sgentry64 {
         u32     count;  /* Length. */
 };
 
+struct sgentryraw {
+        __le32          next;   /* reserved for F/W use */
+        __le32          prev;   /* reserved for F/W use */
+        __le32          addr[2];
+        __le32          count;
+        __le32          flags;  /* reserved for F/W use */
+};
+
+struct user_sgentryraw {
+        u32             next;   /* reserved for F/W use */
+        u32             prev;   /* reserved for F/W use */
+        u32             addr[2];
+        u32             count;
+        u32             flags;  /* reserved for F/W use */
+};
+
 /*
  *      SGMAP
  *
@@ -141,6 +157,16 @@ struct user_sgmap64 {
         struct user_sgentry64 sg[1];
 };
 
+struct sgmapraw {
+        __le32            count;
+        struct sgentryraw sg[1];
+};
+
+struct user_sgmapraw {
+        u32               count;
+        struct user_sgentryraw sg[1];
+};
+
 struct creation_info
 {
         u8              buildnum;               /* e.g., 588 */
@@ -355,6 +381,7 @@ struct hw_fib {
  */
 #define         ContainerCommand                500
 #define         ContainerCommand64              501
+#define         ContainerRawIo                  502
 /*
  *      Cluster Commands
  */
@@ -986,6 +1013,9 @@ struct aac_dev
         u8                      nondasd_support; 
         u8                      dac_support;
         u8                      raid_scsi_mode;
+        /* macro side-effects BEWARE */
+#       define                  raw_io_interface \
+          init->InitStructRevision==cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4)
         u8                      printf_enabled;
 };
 
@@ -1164,6 +1194,17 @@ struct aac_write_reply
         __le32          committed;
 };
 
+struct aac_raw_io
+{
+        __le32          block[2];
+        __le32          count;
+        __le16          cid;
+        __le16          flags;          /* 00 W, 01 R */
+        __le16          bpTotal;        /* reserved for F/W use */
+        __le16          bpComplete;     /* reserved for F/W use */
+        struct sgmapraw sg;
+};
+
 #define CT_FLUSH_CACHE 129
 struct aac_synchronize {
         __le32          command;        /* VM_ContainerConfig */
@@ -1204,7 +1245,7 @@ struct aac_srb
 };
 
 /*
- * This and assocated data structs are used by the 
+ * This and associated data structs are used by the
  * ioctl caller and are in cpu order.
  */
 struct user_aac_srb