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Diffstat (limited to 'include/asm-mips/sn/launch.h')
| -rw-r--r-- | include/asm-mips/sn/launch.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/include/asm-mips/sn/launch.h b/include/asm-mips/sn/launch.h new file mode 100644 index 00000000000..b67699c0c47 --- /dev/null +++ b/include/asm-mips/sn/launch.h @@ -0,0 +1,107 @@ +/* + * 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 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 */ |