patch-2.3.99-pre9 linux/include/asm-mips64/sn/launch.h

• Lines: 124
• Date: Sat May 13 08:31:25 2000
• Orig file: v2.3.99-pre8/linux/include/asm-mips64/sn/launch.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.99-pre8/linux/include/asm-mips64/sn/launch.h linux/include/asm-mips64/sn/launch.h
@@ -0,0 +1,123 @@
+/* $Id: launch.h,v 1.3 2000/04/21 04:09:13 pfg Exp $
+ *
+ * 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 <linux/config.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 compliment 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.
+ */
+
+#ifdef _LANGUAGE_C
+
+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)
+
+#ifdef _STANDALONE
+
+launch_t       *launch_get(int nasid, int cpu);
+launch_t       *launch_get_current(void);
+void		launch_loop(void);
+void		launch_slave(int nasid, int cpu,
+			     launch_proc_t call_addr,
+			     __int64_t call_parm,
+			     void *stack_addr,
+			     void *gp_addr);
+int		launch_wait(int nasid, int cpu, int timeout_msec);
+launch_state_t	launch_poll(int nasid, int cpu);
+
+#endif /* _STANDALONE */
+
+#endif /* _LANGUAGE_C */
+
+#endif /* _ASM_SN_LAUNCH_H */