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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 __GRU_H__20#define __GRU_H__21 22/*23 * GRU architectural definitions24 */25#define GRU_CACHE_LINE_BYTES 6426#define GRU_HANDLE_STRIDE 25627#define GRU_CB_BASE 028#define GRU_DS_BASE 0x2000029 30/*31 * Size used to map GRU GSeg32 */33#if defined(CONFIG_X86_64)34#define GRU_GSEG_PAGESIZE (256 * 1024UL) /* ZZZ 2MB ??? */35#else36#error "Unsupported architecture"37#endif38 39/*40 * Structure for obtaining GRU resource information41 */42struct gru_chiplet_info {43 int node;44 int chiplet;45 int blade;46 int total_dsr_bytes;47 int total_cbr;48 int total_user_dsr_bytes;49 int total_user_cbr;50 int free_user_dsr_bytes;51 int free_user_cbr;52};53 54/*55 * Statictics kept for each context.56 */57struct gru_gseg_statistics {58 unsigned long fmm_tlbmiss;59 unsigned long upm_tlbmiss;60 unsigned long tlbdropin;61 unsigned long context_stolen;62 unsigned long reserved[10];63};64 65/* Flags for GRU options on the gru_create_context() call */66/* Select one of the follow 4 options to specify how TLB misses are handled */67#define GRU_OPT_MISS_DEFAULT 0x0000 /* Use default mode */68#define GRU_OPT_MISS_USER_POLL 0x0001 /* User will poll CB for faults */69#define GRU_OPT_MISS_FMM_INTR 0x0002 /* Send interrupt to cpu to70 handle fault */71#define GRU_OPT_MISS_FMM_POLL 0x0003 /* Use system polling thread */72#define GRU_OPT_MISS_MASK 0x0003 /* Mask for TLB MISS option */73 74 75 76#endif /* __GRU_H__ */77