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1/*2 * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.3 *4 * This program is free software; you can redistribute it and/or modify5 * it under the terms of the GNU Lesser General Public License as published by6 * the Free Software Foundation; either version 2.1 of the License, or7 * (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 of11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the12 * GNU Lesser General Public License for more details.13 *14 * You should have received a copy of the GNU Lesser General Public License15 * along with this program; if not, write to the Free Software16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA17 */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 open28 * ZZZ temp - set high for testing. Revisit.29 */30#define GRU_MAX_OPEN_CONTEXTS 3231 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 66struct gru_get_gseg_statistics_req {67 unsigned long gseg;68 struct gru_gseg_statistics stats;69};70 71/*72 * Structure used to pass TLB flush parameters to the driver73 */74struct gru_create_context_req {75 unsigned long gseg;76 unsigned int data_segment_bytes;77 unsigned int control_blocks;78 unsigned int maximum_thread_count;79 unsigned int options;80 unsigned char tlb_preload_count;81};82 83/*84 * Structure used to pass unload context parameters to the driver85 */86struct gru_unload_context_req {87 unsigned long gseg;88};89 90/*91 * Structure used to set context options92 */93enum {sco_gseg_owner, sco_cch_req_slice, sco_blade_chiplet};94struct gru_set_context_option_req {95 unsigned long gseg;96 int op;97 int val0;98 long val1;99};100 101/*102 * Structure used to pass TLB flush parameters to the driver103 */104struct gru_flush_tlb_req {105 unsigned long gseg;106 unsigned long vaddr;107 size_t len;108};109 110/*111 * Structure used to pass TLB flush parameters to the driver112 */113enum {dcs_pid, dcs_gid};114struct gru_dump_chiplet_state_req {115 unsigned int op;116 unsigned int gid;117 int ctxnum;118 char data_opt;119 char lock_cch;120 char flush_cbrs;121 char fill[10];122 pid_t pid;123 void *buf;124 size_t buflen;125 /* ---- output --- */126 unsigned int num_contexts;127};128 129#define GRU_DUMP_MAGIC 0x3474ab6c130struct gru_dump_context_header {131 unsigned int magic;132 unsigned int gid;133 unsigned char ctxnum;134 unsigned char cbrcnt;135 unsigned char dsrcnt;136 pid_t pid;137 unsigned long vaddr;138 int cch_locked;139 unsigned long data[];140};141 142/*143 * GRU configuration info (temp - for testing)144 */145struct gru_config_info {146 int cpus;147 int blades;148 int nodes;149 int chiplets;150 int fill[16];151};152 153#endif /* __GRULIB_H__ */154