Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, UV: uv_irq.c: Fix all sparse warnings
  x86, UV: Improve BAU performance and error recovery
  x86, UV: Delete unneeded boot messages
  x86, UV: Clean up UV headers for MMR definitions

6 files changed, 1167 insertions, 905 deletions

diff --git a/arch/x86/include/asm/uv/uv_bau.h b/arch/x86/include/asm/uv/uv_bau.h
index b414d2b401f..aa558ac0306 100644
--- a/arch/x86/include/asm/uv/uv_bau.h
+++ b/arch/x86/include/asm/uv/uv_bau.h
@@ -27,13 +27,14 @@
  * set 2 is at BASE + 2*512, set 3 at BASE + 3*512, and so on.
  *
  * We will use 31 sets, one for sending BAU messages from each of the 32
- * cpu's on the node.
+ * cpu's on the uvhub.
  *
  * TLB shootdown will use the first of the 8 descriptors of each set.
  * Each of the descriptors is 64 bytes in size (8*64 = 512 bytes in a set).
  */
 
 #define UV_ITEMS_PER_DESCRIPTOR         8
+#define MAX_BAU_CONCURRENT              3
 #define UV_CPUS_PER_ACT_STATUS          32
 #define UV_ACT_STATUS_MASK              0x3
 #define UV_ACT_STATUS_SIZE              2
@@ -45,6 +46,9 @@
 #define UV_PAYLOADQ_PNODE_SHIFT         49
 #define UV_PTC_BASENAME                 "sgi_uv/ptc_statistics"
 #define uv_physnodeaddr(x)              ((__pa((unsigned long)(x)) & uv_mmask))
+#define UV_ENABLE_INTD_SOFT_ACK_MODE_SHIFT 15
+#define UV_INTD_SOFT_ACK_TIMEOUT_PERIOD_SHIFT 16
+#define UV_INTD_SOFT_ACK_TIMEOUT_PERIOD 0x000000000bUL
 
 /*
  * bits in UVH_LB_BAU_SB_ACTIVATION_STATUS_0/1
@@ -55,15 +59,29 @@
 #define DESC_STATUS_SOURCE_TIMEOUT      3
 
 /*
- * source side thresholds at which message retries print a warning
+ * source side threshholds at which message retries print a warning
  */
 #define SOURCE_TIMEOUT_LIMIT            20
 #define DESTINATION_TIMEOUT_LIMIT       20
 
 /*
+ * misc. delays, in microseconds
+ */
+#define THROTTLE_DELAY                  10
+#define TIMEOUT_DELAY                   10
+#define BIOS_TO                         1000
+/* BIOS is assumed to set the destination timeout to 1003520 nanoseconds */
+
+/*
+ * threshholds at which to use IPI to free resources
+ */
+#define PLUGSB4RESET 100
+#define TIMEOUTSB4RESET 100
+
+/*
  * number of entries in the destination side payload queue
  */
-#define DEST_Q_SIZE                     17
+#define DEST_Q_SIZE                     20
 /*
  * number of destination side software ack resources
  */
@@ -72,9 +90,10 @@
 /*
  * completion statuses for sending a TLB flush message
  */
-#define FLUSH_RETRY                     1
-#define FLUSH_GIVEUP                    2
-#define FLUSH_COMPLETE                  3
+#define FLUSH_RETRY_PLUGGED             1
+#define FLUSH_RETRY_TIMEOUT             2
+#define FLUSH_GIVEUP                    3
+#define FLUSH_COMPLETE                  4
 
 /*
  * Distribution: 32 bytes (256 bits) (bytes 0-0x1f of descriptor)
@@ -86,14 +105,14 @@
  * 'base_dest_nodeid' field of the header corresponds to the
  * destination nodeID associated with that specified bit.
  */
-struct bau_target_nodemask {
-        unsigned long bits[BITS_TO_LONGS(256)];
+struct bau_target_uvhubmask {
+        unsigned long bits[BITS_TO_LONGS(UV_DISTRIBUTION_SIZE)];
 };
 
 /*
- * mask of cpu's on a node
+ * mask of cpu's on a uvhub
  * (during initialization we need to check that unsigned long has
- *  enough bits for max. cpu's per node)
+ *  enough bits for max. cpu's per uvhub)
  */
 struct bau_local_cpumask {
         unsigned long bits;
@@ -135,8 +154,8 @@ struct bau_msg_payload {
 struct bau_msg_header {
         unsigned int dest_subnodeid:6;  /* must be 0x10, for the LB */
         /* bits 5:0 */
-        unsigned int base_dest_nodeid:15; /* nasid>>1 (pnode) of */
-        /* bits 20:6 */                   /* first bit in node_map */
+        unsigned int base_dest_nodeid:15; /* nasid (pnode<<1) of */
+        /* bits 20:6 */                   /* first bit in uvhub map */
         unsigned int command:8; /* message type */
         /* bits 28:21 */
                                 /* 0x38: SN3net EndPoint Message */
@@ -146,26 +165,38 @@ struct bau_msg_header {
         unsigned int rsvd_2:9;  /* must be zero */
         /* bits 40:32 */
                                 /* Suppl_A is 56-41 */
-        unsigned int payload_2a:8;/* becomes byte 16 of msg */
-        /* bits 48:41 */        /* not currently using */
-        unsigned int payload_2b:8;/* becomes byte 17 of msg */
-        /* bits 56:49 */        /* not currently using */
+        unsigned int sequence:16;/* message sequence number */
+        /* bits 56:41 */        /* becomes bytes 16-17 of msg */
                                 /* Address field (96:57) is never used as an
                                    address (these are address bits 42:3) */
+
         unsigned int rsvd_3:1;  /* must be zero */
         /* bit 57 */
                                 /* address bits 27:4 are payload */
-                                /* these 24 bits become bytes 12-14 of msg */
+        /* these next 24  (58-81) bits become bytes 12-14 of msg */
+
+        /* bits 65:58 land in byte 12 */
         unsigned int replied_to:1;/* sent as 0 by the source to byte 12 */
         /* bit 58 */
-
-        unsigned int payload_1a:5;/* not currently used */
-        /* bits 63:59 */
-        unsigned int payload_1b:8;/* not currently used */
-        /* bits 71:64 */
-        unsigned int payload_1c:8;/* not currently used */
-        /* bits 79:72 */
-        unsigned int payload_1d:2;/* not currently used */
+        unsigned int msg_type:3; /* software type of the message*/
+        /* bits 61:59 */
+        unsigned int canceled:1; /* message canceled, resource to be freed*/
+        /* bit 62 */
+        unsigned int payload_1a:1;/* not currently used */
+        /* bit 63 */
+        unsigned int payload_1b:2;/* not currently used */
+        /* bits 65:64 */
+
+        /* bits 73:66 land in byte 13 */
+        unsigned int payload_1ca:6;/* not currently used */
+        /* bits 71:66 */
+        unsigned int payload_1c:2;/* not currently used */
+        /* bits 73:72 */
+
+        /* bits 81:74 land in byte 14 */
+        unsigned int payload_1d:6;/* not currently used */
+        /* bits 79:74 */
+        unsigned int payload_1e:2;/* not currently used */
         /* bits 81:80 */
 
         unsigned int rsvd_4:7;  /* must be zero */
@@ -178,7 +209,7 @@ struct bau_msg_header {
         /* bits 95:90 */
         unsigned int rsvd_6:5;  /* must be zero */
         /* bits 100:96 */
-        unsigned int int_both:1;/* if 1, interrupt both sockets on the blade */
+        unsigned int int_both:1;/* if 1, interrupt both sockets on the uvhub */
         /* bit 101*/
         unsigned int fairness:3;/* usually zero */
         /* bits 104:102 */
@@ -191,13 +222,18 @@ struct bau_msg_header {
         /* bits 127:107 */
 };