1384740dcSRalf Baechle /* 2384740dcSRalf Baechle * This file is subject to the terms and conditions of the GNU General Public 3384740dcSRalf Baechle * License. See the file "COPYING" in the main directory of this archive 4384740dcSRalf Baechle * for more details. 5384740dcSRalf Baechle * 6384740dcSRalf Baechle * Copyright (C) 1992 - 1997, 2000 Silicon Graphics, Inc. 7384740dcSRalf Baechle * Copyright (C) 2000 by Colin Ngam 8384740dcSRalf Baechle */ 9384740dcSRalf Baechle #ifndef _ASM_SN_LAUNCH_H 10384740dcSRalf Baechle #define _ASM_SN_LAUNCH_H 11384740dcSRalf Baechle 12384740dcSRalf Baechle #include <asm/sn/types.h> 13384740dcSRalf Baechle #include <asm/sn/addrs.h> 14384740dcSRalf Baechle 15384740dcSRalf Baechle /* 16384740dcSRalf Baechle * The launch data structure resides at a fixed place in each node's memory 17384740dcSRalf Baechle * and is used to communicate between the master processor and the slave 18384740dcSRalf Baechle * processors. 19384740dcSRalf Baechle * 20384740dcSRalf Baechle * The master stores launch parameters in the launch structure 21384740dcSRalf Baechle * corresponding to a target processor that is in a slave loop, then sends 22384740dcSRalf Baechle * an interrupt to the slave processor. The slave calls the desired 23384740dcSRalf Baechle * function, then returns to the slave loop. The master may poll or wait 24384740dcSRalf Baechle * for the slaves to finish. 25384740dcSRalf Baechle * 26384740dcSRalf Baechle * There is an array of launch structures, one per CPU on the node. One 27384740dcSRalf Baechle * interrupt level is used per local CPU. 28384740dcSRalf Baechle */ 29384740dcSRalf Baechle 30384740dcSRalf Baechle #define LAUNCH_MAGIC 0xaddbead2addbead3 31384740dcSRalf Baechle #ifdef CONFIG_SGI_IP27 32384740dcSRalf Baechle #define LAUNCH_SIZEOF 0x100 33384740dcSRalf Baechle #define LAUNCH_PADSZ 0xa0 34384740dcSRalf Baechle #endif 35384740dcSRalf Baechle 36384740dcSRalf Baechle #define LAUNCH_OFF_MAGIC 0x00 /* Struct offsets for assembly */ 37384740dcSRalf Baechle #define LAUNCH_OFF_BUSY 0x08 38384740dcSRalf Baechle #define LAUNCH_OFF_CALL 0x10 39384740dcSRalf Baechle #define LAUNCH_OFF_CALLC 0x18 40384740dcSRalf Baechle #define LAUNCH_OFF_CALLPARM 0x20 41384740dcSRalf Baechle #define LAUNCH_OFF_STACK 0x28 42384740dcSRalf Baechle #define LAUNCH_OFF_GP 0x30 43384740dcSRalf Baechle #define LAUNCH_OFF_BEVUTLB 0x38 44384740dcSRalf Baechle #define LAUNCH_OFF_BEVNORMAL 0x40 45384740dcSRalf Baechle #define LAUNCH_OFF_BEVECC 0x48 46384740dcSRalf Baechle 47384740dcSRalf Baechle #define LAUNCH_STATE_DONE 0 /* Return value of LAUNCH_POLL */ 48384740dcSRalf Baechle #define LAUNCH_STATE_SENT 1 49384740dcSRalf Baechle #define LAUNCH_STATE_RECD 2 50384740dcSRalf Baechle 51384740dcSRalf Baechle /* 52384740dcSRalf Baechle * The launch routine is called only if the complement address is correct. 53384740dcSRalf Baechle * 54384740dcSRalf Baechle * Before control is transferred to a routine, the complement address 55384740dcSRalf Baechle * is zeroed (invalidated) to prevent an accidental call from a spurious 56384740dcSRalf Baechle * interrupt. 57384740dcSRalf Baechle * 58384740dcSRalf Baechle * The slave_launch routine turns on the BUSY flag, and the slave loop 59384740dcSRalf Baechle * clears the BUSY flag after control is returned to it. 60384740dcSRalf Baechle */ 61384740dcSRalf Baechle 62384740dcSRalf Baechle #ifndef __ASSEMBLY__ 63384740dcSRalf Baechle 64384740dcSRalf Baechle typedef int launch_state_t; 65384740dcSRalf Baechle typedef void (*launch_proc_t)(u64 call_parm); 66384740dcSRalf Baechle 67384740dcSRalf Baechle typedef struct launch_s { 68384740dcSRalf Baechle volatile u64 magic; /* Magic number */ 69384740dcSRalf Baechle volatile u64 busy; /* Slave currently active */ 70384740dcSRalf Baechle volatile launch_proc_t call_addr; /* Func. for slave to call */ 71384740dcSRalf Baechle volatile u64 call_addr_c; /* 1's complement of call_addr*/ 72384740dcSRalf Baechle volatile u64 call_parm; /* Single parm passed to call*/ 73384740dcSRalf Baechle volatile void *stack_addr; /* Stack pointer for slave function */ 74384740dcSRalf Baechle volatile void *gp_addr; /* Global pointer for slave func. */ 75384740dcSRalf Baechle volatile char *bevutlb;/* Address of bev utlb ex handler */ 76384740dcSRalf Baechle volatile char *bevnormal;/*Address of bev normal ex handler */ 77384740dcSRalf Baechle volatile char *bevecc;/* Address of bev cache err handler */ 78384740dcSRalf Baechle volatile char pad[160]; /* Pad to LAUNCH_SIZEOF */ 79384740dcSRalf Baechle } launch_t; 80384740dcSRalf Baechle 81384740dcSRalf Baechle /* 82384740dcSRalf Baechle * PROM entry points for launch routines are determined by IPxxprom/start.s 83384740dcSRalf Baechle */ 84384740dcSRalf Baechle 85384740dcSRalf Baechle #define LAUNCH_SLAVE (*(void (*)(int nasid, int cpu, \ 86384740dcSRalf Baechle launch_proc_t call_addr, \ 87384740dcSRalf Baechle u64 call_parm, \ 88384740dcSRalf Baechle void *stack_addr, \ 89384740dcSRalf Baechle void *gp_addr)) \ 90384740dcSRalf Baechle IP27PROM_LAUNCHSLAVE) 91384740dcSRalf Baechle 92384740dcSRalf Baechle #define LAUNCH_WAIT (*(void (*)(int nasid, int cpu, int timeout_msec)) \ 93384740dcSRalf Baechle IP27PROM_WAITSLAVE) 94384740dcSRalf Baechle 95384740dcSRalf Baechle #define LAUNCH_POLL (*(launch_state_t (*)(int nasid, int cpu)) \ 96384740dcSRalf Baechle IP27PROM_POLLSLAVE) 97384740dcSRalf Baechle 98384740dcSRalf Baechle #define LAUNCH_LOOP (*(void (*)(void)) \ 99384740dcSRalf Baechle IP27PROM_SLAVELOOP) 100384740dcSRalf Baechle 101384740dcSRalf Baechle #define LAUNCH_FLASH (*(void (*)(void)) \ 102384740dcSRalf Baechle IP27PROM_FLASHLEDS) 103384740dcSRalf Baechle 104384740dcSRalf Baechle #endif /* !__ASSEMBLY__ */ 105384740dcSRalf Baechle 106384740dcSRalf Baechle #endif /* _ASM_SN_LAUNCH_H */ 107