| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame] | 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 | */ |
| 44 | struct 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 | */ |
| 59 | struct 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__ */ |