1 /* 2 * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU Lesser General Public License as published by 6 * the Free Software Foundation; either version 2.1 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU Lesser General Public License for more details. 13 * 14 * You should have received a copy of the GNU Lesser General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 */ 18 19 #ifndef __GRULIB_H__ 20 #define __GRULIB_H__ 21 22 #define GRU_BASENAME "gru" 23 #define GRU_FULLNAME "/dev/gru" 24 #define GRU_IOCTL_NUM 'G' 25 26 /* 27 * Maximum number of GRU segments that a user can have open 28 * ZZZ temp - set high for testing. Revisit. 29 */ 30 #define GRU_MAX_OPEN_CONTEXTS 32 31 32 /* Set Number of Request Blocks */ 33 #define GRU_CREATE_CONTEXT _IOWR(GRU_IOCTL_NUM, 1, void *) 34 35 /* Set Context Options */ 36 #define GRU_SET_CONTEXT_OPTION _IOWR(GRU_IOCTL_NUM, 4, void *) 37 38 /* Fetch exception detail */ 39 #define GRU_USER_GET_EXCEPTION_DETAIL _IOWR(GRU_IOCTL_NUM, 6, void *) 40 41 /* For user call_os handling - normally a TLB fault */ 42 #define GRU_USER_CALL_OS _IOWR(GRU_IOCTL_NUM, 8, void *) 43 44 /* For user unload context */ 45 #define GRU_USER_UNLOAD_CONTEXT _IOWR(GRU_IOCTL_NUM, 9, void *) 46 47 /* For dumpping GRU chiplet state */ 48 #define GRU_DUMP_CHIPLET_STATE _IOWR(GRU_IOCTL_NUM, 11, void *) 49 50 /* For getting gseg statistics */ 51 #define GRU_GET_GSEG_STATISTICS _IOWR(GRU_IOCTL_NUM, 12, void *) 52 53 /* For user TLB flushing (primarily for tests) */ 54 #define GRU_USER_FLUSH_TLB _IOWR(GRU_IOCTL_NUM, 50, void *) 55 56 /* Get some config options (primarily for tests & emulator) */ 57 #define GRU_GET_CONFIG_INFO _IOWR(GRU_IOCTL_NUM, 51, void *) 58 59 /* Various kernel self-tests */ 60 #define GRU_KTEST _IOWR(GRU_IOCTL_NUM, 52, void *) 61 62 #define CONTEXT_WINDOW_BYTES(th) (GRU_GSEG_PAGESIZE * (th)) 63 #define THREAD_POINTER(p, th) (p + GRU_GSEG_PAGESIZE * (th)) 64 #define GSEG_START(cb) ((void *)((unsigned long)(cb) & ~(GRU_GSEG_PAGESIZE - 1))) 65 66 /* 67 * Statictics kept on a per-GTS basis. 68 */ 69 struct gts_statistics { 70 unsigned long fmm_tlbdropin; 71 unsigned long upm_tlbdropin; 72 unsigned long context_stolen; 73 }; 74 75 struct gru_get_gseg_statistics_req { 76 unsigned long gseg; 77 struct gts_statistics stats; 78 }; 79 80 /* 81 * Structure used to pass TLB flush parameters to the driver 82 */ 83 struct gru_create_context_req { 84 unsigned long gseg; 85 unsigned int data_segment_bytes; 86 unsigned int control_blocks; 87 unsigned int maximum_thread_count; 88 unsigned int options; 89 }; 90 91 /* 92 * Structure used to pass unload context parameters to the driver 93 */ 94 struct gru_unload_context_req { 95 unsigned long gseg; 96 }; 97 98 /* 99 * Structure used to set context options 100 */ 101 enum {sco_gseg_owner, sco_cch_req_slice}; 102 struct gru_set_context_option_req { 103 unsigned long gseg; 104 int op; 105 unsigned long val1; 106 }; 107 108 /* 109 * Structure used to pass TLB flush parameters to the driver 110 */ 111 struct gru_flush_tlb_req { 112 unsigned long gseg; 113 unsigned long vaddr; 114 size_t len; 115 }; 116 117 /* 118 * Structure used to pass TLB flush parameters to the driver 119 */ 120 enum {dcs_pid, dcs_gid}; 121 struct gru_dump_chiplet_state_req { 122 unsigned int op; 123 unsigned int gid; 124 int ctxnum; 125 char data_opt; 126 char lock_cch; 127 pid_t pid; 128 void *buf; 129 size_t buflen; 130 /* ---- output --- */ 131 unsigned int num_contexts; 132 }; 133 134 #define GRU_DUMP_MAGIC 0x3474ab6c 135 struct gru_dump_context_header { 136 unsigned int magic; 137 unsigned int gid; 138 unsigned char ctxnum; 139 unsigned char cbrcnt; 140 unsigned char dsrcnt; 141 pid_t pid; 142 unsigned long vaddr; 143 int cch_locked; 144 unsigned long data[0]; 145 }; 146 147 /* 148 * GRU configuration info (temp - for testing) 149 */ 150 struct gru_config_info { 151 int cpus; 152 int blades; 153 int nodes; 154 int chiplets; 155 int fill[16]; 156 }; 157 158 #endif /* __GRULIB_H__ */ 159