[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