| 1 | /* |
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| 2 | * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. |
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| 3 | * |
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| 4 | * This program is free software; you can redistribute it and/or modify |
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| 5 | * it under the terms of the GNU Lesser General Public License as published by |
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| 6 | * the Free Software Foundation; either version 2.1 of the License, or |
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| 7 | * (at your option) any later version. |
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| 8 | * |
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| 9 | * This program is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 12 | * GNU Lesser General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Lesser General Public License |
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| 15 | * along with this program; if not, write to the Free Software |
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| 16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 17 | */ |
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| 18 | |
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| 19 | #ifndef __GRU_H__ |
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| 20 | #define __GRU_H__ |
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| 21 | |
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| 22 | /* |
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| 23 | * GRU architectural definitions |
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| 24 | */ |
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| 25 | #define GRU_CACHE_LINE_BYTES 64 |
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| 26 | #define GRU_HANDLE_STRIDE 256 |
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| 27 | #define GRU_CB_BASE 0 |
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| 28 | #define GRU_DS_BASE 0x20000 |
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| 29 | |
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| 30 | /* |
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| 31 | * Size used to map GRU GSeg |
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| 32 | */ |
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| 33 | #if defined(CONFIG_X86_64) |
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| 34 | #define GRU_GSEG_PAGESIZE (256 * 1024UL) /* ZZZ 2MB ??? */ |
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| 35 | #else |
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| 36 | #error "Unsupported architecture" |
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| 37 | #endif |
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| 38 | |
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| 39 | /* |
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| 40 | * Structure for obtaining GRU resource information |
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| 41 | */ |
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| 42 | struct gru_chiplet_info { |
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| 43 | int node; |
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| 44 | int chiplet; |
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| 45 | int blade; |
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| 46 | int total_dsr_bytes; |
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| 47 | int total_cbr; |
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| 48 | int total_user_dsr_bytes; |
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| 49 | int total_user_cbr; |
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| 50 | int free_user_dsr_bytes; |
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| 51 | int free_user_cbr; |
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| 52 | }; |
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| 53 | |
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| 54 | /* |
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| 55 | * Statictics kept for each context. |
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| 56 | */ |
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| 57 | struct gru_gseg_statistics { |
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| 58 | unsigned long fmm_tlbmiss; |
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| 59 | unsigned long upm_tlbmiss; |
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| 60 | unsigned long tlbdropin; |
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| 61 | unsigned long context_stolen; |
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| 62 | unsigned long reserved[10]; |
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| 63 | }; |
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| 64 | |
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| 65 | /* Flags for GRU options on the gru_create_context() call */ |
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| 66 | /* Select one of the follow 4 options to specify how TLB misses are handled */ |
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| 67 | #define GRU_OPT_MISS_DEFAULT 0x0000 /* Use default mode */ |
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| 68 | #define GRU_OPT_MISS_USER_POLL 0x0001 /* User will poll CB for faults */ |
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| 69 | #define GRU_OPT_MISS_FMM_INTR 0x0002 /* Send interrupt to cpu to |
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| 70 | handle fault */ |
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| 71 | #define GRU_OPT_MISS_FMM_POLL 0x0003 /* Use system polling thread */ |
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| 72 | #define GRU_OPT_MISS_MASK 0x0003 /* Mask for TLB MISS option */ |
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| 73 | |
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| 74 | |
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| 75 | |
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| 76 | #endif /* __GRU_H__ */ |
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| 77 | |
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