1 files changed, 106 insertions, 0 deletions

diff --git a/arch/mips/include/asm/sn/launch.h b/arch/mips/include/asm/sn/launch.h
new file mode 100644
index 00000000000..b7c2226312c
--- /dev/null
+++ b/arch/mips/include/asm/sn/launch.h
@@ -0,0 +1,106 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1992 - 1997, 2000 Silicon Graphics, Inc.
+ * Copyright (C) 2000 by Colin Ngam
+ */
+#ifndef _ASM_SN_LAUNCH_H
+#define _ASM_SN_LAUNCH_H
+
+#include <asm/sn/types.h>
+#include <asm/sn/addrs.h>
+
+/*
+ * The launch data structure resides at a fixed place in each node's memory
+ * and is used to communicate between the master processor and the slave
+ * processors.
+ *
+ * The master stores launch parameters in the launch structure
+ * corresponding to a target processor that is in a slave loop, then sends
+ * an interrupt to the slave processor.  The slave calls the desired
+ * function, then returns to the slave loop.  The master may poll or wait
+ * for the slaves to finish.
+ *
+ * There is an array of launch structures, one per CPU on the node.  One
+ * interrupt level is used per local CPU.
+ */
+
+#define LAUNCH_MAGIC            0xaddbead2addbead3
+#ifdef CONFIG_SGI_IP27
+#define LAUNCH_SIZEOF           0x100
+#define LAUNCH_PADSZ            0xa0
+#endif
+
+#define LAUNCH_OFF_MAGIC        0x00    /* Struct offsets for assembly      */
+#define LAUNCH_OFF_BUSY         0x08
+#define LAUNCH_OFF_CALL         0x10
+#define LAUNCH_OFF_CALLC        0x18
+#define LAUNCH_OFF_CALLPARM     0x20
+#define LAUNCH_OFF_STACK        0x28
+#define LAUNCH_OFF_GP           0x30
+#define LAUNCH_OFF_BEVUTLB      0x38
+#define LAUNCH_OFF_BEVNORMAL    0x40
+#define LAUNCH_OFF_BEVECC       0x48
+
+#define LAUNCH_STATE_DONE       0       /* Return value of LAUNCH_POLL      */
+#define LAUNCH_STATE_SENT       1
+#define LAUNCH_STATE_RECD       2
+
+/*
+ * The launch routine is called only if the complement address is correct.
+ *
+ * Before control is transferred to a routine, the complement address
+ * is zeroed (invalidated) to prevent an accidental call from a spurious
+ * interrupt.
+ *
+ * The slave_launch routine turns on the BUSY flag, and the slave loop
+ * clears the BUSY flag after control is returned to it.
+ */
+
+#ifndef __ASSEMBLY__
+
+typedef int launch_state_t;
+typedef void (*launch_proc_t)(u64 call_parm);
+
+typedef struct launch_s {
+        volatile u64            magic;  /* Magic number                     */
+        volatile u64            busy;   /* Slave currently active           */
+        volatile launch_proc_t  call_addr;      /* Func. for slave to call  */
+        volatile u64            call_addr_c;    /* 1's complement of call_addr*/
+        volatile u64            call_parm;      /* Single parm passed to call*/
+        volatile void *stack_addr;      /* Stack pointer for slave function */
+        volatile void *gp_addr;         /* Global pointer for slave func.   */
+        volatile char           *bevutlb;/* Address of bev utlb ex handler   */
+        volatile char           *bevnormal;/*Address of bev normal ex handler */
+        volatile char           *bevecc;/* Address of bev cache err handler */
+        volatile char           pad[160];       /* Pad to LAUNCH_SIZEOF     */
+} launch_t;
+
+/*
+ * PROM entry points for launch routines are determined by IPxxprom/start.s
+ */
+
+#define LAUNCH_SLAVE    (*(void (*)(int nasid, int cpu, \
+                                    launch_proc_t call_addr, \
+                                    u64 call_parm, \
+                                    void *stack_addr, \
+                                    void *gp_addr)) \
+                         IP27PROM_LAUNCHSLAVE)
+
+#define LAUNCH_WAIT     (*(void (*)(int nasid, int cpu, int timeout_msec)) \
+                         IP27PROM_WAITSLAVE)
+
+#define LAUNCH_POLL     (*(launch_state_t (*)(int nasid, int cpu)) \
+                         IP27PROM_POLLSLAVE)
+
+#define LAUNCH_LOOP     (*(void (*)(void)) \
+                         IP27PROM_SLAVELOOP)
+
+#define LAUNCH_FLASH    (*(void (*)(void)) \
+                         IP27PROM_FLASHLEDS)
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _ASM_SN_LAUNCH_H */