[IA64-SGI] Add new MMR definitions/Modify BTE initialiation&copy.

patch 1:
	Add new MMR definitions.
	Modify BTE initialiation.
	Modify BTE copy.

Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 47 insertions, 6 deletions

diff --git a/include/asm-ia64/sn/bte.h b/include/asm-ia64/sn/bte.h
index 0ec27f99c181..f50da3d91d07 100644
--- a/include/asm-ia64/sn/bte.h
+++ b/include/asm-ia64/sn/bte.h
@@ -3,7 +3,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (c) 2000-2004 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.  All Rights Reserved.
  */
 
 
@@ -13,8 +13,12 @@
 #include <linux/timer.h>
 #include <linux/spinlock.h>
 #include <linux/cache.h>
+#include <asm/sn/pda.h>
 #include <asm/sn/types.h>
+#include <asm/sn/shub_mmr.h>
 
+#define IBCT_NOTIFY             (0x1UL << 4)
+#define IBCT_ZFIL_MODE          (0x1UL << 0)
 
 /* #define BTE_DEBUG */
 /* #define BTE_DEBUG_VERBOSE */
@@ -39,8 +43,36 @@
 
 
 /* Define hardware */
-#define BTES_PER_NODE 2
+#define BTES_PER_NODE (is_shub2() ? 4 : 2)
+#define MAX_BTES_PER_NODE 4
 
+#define BTE2OFF_CTRL    (0)
+#define BTE2OFF_SRC     (SH2_BT_ENG_SRC_ADDR_0 - SH2_BT_ENG_CSR_0)
+#define BTE2OFF_DEST    (SH2_BT_ENG_DEST_ADDR_0 - SH2_BT_ENG_CSR_0)
+#define BTE2OFF_NOTIFY  (SH2_BT_ENG_NOTIF_ADDR_0 - SH2_BT_ENG_CSR_0)
+
+#define BTE_BASE_ADDR(interface)                                \
+    (is_shub2() ? (interface == 0) ? SH2_BT_ENG_CSR_0 :         \
+                  (interface == 1) ? SH2_BT_ENG_CSR_1 :         \
+                  (interface == 2) ? SH2_BT_ENG_CSR_2 :         \
+                                     SH2_BT_ENG_CSR_3           \
+                : (interface == 0) ? IIO_IBLS0 : IIO_IBLS1)
+
+#define BTE_SOURCE_ADDR(base)                                   \
+    (is_shub2() ? base + (BTE2OFF_SRC/8)                        \
+                : base + (BTEOFF_SRC/8))
+
+#define BTE_DEST_ADDR(base)                                     \
+    (is_shub2() ? base + (BTE2OFF_DEST/8)                       \
+                : base + (BTEOFF_DEST/8))
+
+#define BTE_CTRL_ADDR(base)                                     \
+    (is_shub2() ? base + (BTE2OFF_CTRL/8)                       \
+                : base + (BTEOFF_CTRL/8))
+
+#define BTE_NOTIF_ADDR(base)                                    \
+    (is_shub2() ? base + (BTE2OFF_NOTIFY/8)                     \
+                : base + (BTEOFF_NOTIFY/8))
 
 /* Define hardware modes */
 #define BTE_NOTIFY (IBCT_NOTIFY)
@@ -68,14 +100,18 @@
 #define BTE_LNSTAT_STORE(_bte, _x)                                      \
                         HUB_S(_bte->bte_base_addr, (_x))
 #define BTE_SRC_STORE(_bte, _x)                                         \
-                        HUB_S(_bte->bte_base_addr + (BTEOFF_SRC/8), (_x))
+                        HUB_S(_bte->bte_source_addr, (_x))
 #define BTE_DEST_STORE(_bte, _x)                                        \
-                        HUB_S(_bte->bte_base_addr + (BTEOFF_DEST/8), (_x))
+                        HUB_S(_bte->bte_destination_addr, (_x))
 #define BTE_CTRL_STORE(_bte, _x)                                        \
-                        HUB_S(_bte->bte_base_addr + (BTEOFF_CTRL/8), (_x))
+                        HUB_S(_bte->bte_control_addr, (_x))
 #define BTE_NOTIF_STORE(_bte, _x)                                       \
-                        HUB_S(_bte->bte_base_addr + (BTEOFF_NOTIFY/8), (_x))
+                        HUB_S(_bte->bte_notify_addr, (_x))
 
+#define BTE_START_TRANSFER(_bte, _len, _mode)                           \
+        is_shub2() ? BTE_CTRL_STORE(_bte, IBLS_BUSY | (_mode << 24) | _len) \
+                : BTE_LNSTAT_STORE(_bte, _len);                         \
+                  BTE_CTRL_STORE(_bte, _mode)
 
 /* Possible results from bte_copy and bte_unaligned_copy */
 /* The following error codes map into the BTE hardware codes
@@ -110,6 +146,10 @@ typedef enum {
 struct bteinfo_s {
         volatile u64 notify ____cacheline_aligned;
         u64 *bte_base_addr ____cacheline_aligned;
+        u64 *bte_source_addr;
+        u64 *bte_destination_addr;
+        u64 *bte_control_addr;
+        u64 *bte_notify_addr;
         spinlock_t spinlock;
         cnodeid_t bte_cnode;    /* cnode                            */
         int bte_error_count;    /* Number of errors encountered     */
@@ -117,6 +157,7 @@ struct bteinfo_s {
         int cleanup_active;     /* Interface is locked for cleanup  */
         volatile bte_result_t bh_error; /* error while processing   */
         volatile u64 *most_rcnt_na;
+        struct bteinfo_s *btes_to_try[MAX_BTES_PER_NODE];
 };