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 __GRU_H__ 20#define __GRU_H__ 21 22/* 23 * GRU architectural definitions 24 */ 25#define GRU_CACHE_LINE_BYTES 64 26#define GRU_HANDLE_STRIDE 256 27#define GRU_CB_BASE 0 28#define GRU_DS_BASE 0x20000 29 30/* 31 * Size used to map GRU GSeg 32 */ 33#if defined(CONFIG_IA64) 34#define GRU_GSEG_PAGESIZE (256 * 1024UL) 35#elif defined(CONFIG_X86_64) 36#define GRU_GSEG_PAGESIZE (256 * 1024UL) /* ZZZ 2MB ??? */ 37#else 38#error "Unsupported architecture" 39#endif 40 41/* 42 * Structure for obtaining GRU resource information 43 */ 44struct gru_chiplet_info { 45 int node; 46 int chiplet; 47 int blade; 48 int total_dsr_bytes; 49 int total_cbr; 50 int total_user_dsr_bytes; 51 int total_user_cbr; 52 int free_user_dsr_bytes; 53 int free_user_cbr; 54}; 55 56/* 57 * Statictics kept for each context. 58 */ 59struct gru_gseg_statistics { 60 unsigned long fmm_tlbmiss; 61 unsigned long upm_tlbmiss; 62 unsigned long tlbdropin; 63 unsigned long context_stolen; 64 unsigned long reserved[10]; 65}; 66 67/* Flags for GRU options on the gru_create_context() call */ 68/* Select one of the follow 4 options to specify how TLB misses are handled */ 69#define GRU_OPT_MISS_DEFAULT 0x0000 /* Use default mode */ 70#define GRU_OPT_MISS_USER_POLL 0x0001 /* User will poll CB for faults */ 71#define GRU_OPT_MISS_FMM_INTR 0x0002 /* Send interrupt to cpu to 72 handle fault */ 73#define GRU_OPT_MISS_FMM_POLL 0x0003 /* Use system polling thread */ 74#define GRU_OPT_MISS_MASK 0x0003 /* Mask for TLB MISS option */ 75 76 77 78#endif /* __GRU_H__ */ 79