[75] | 1 | /* |
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| 2 | * soclib_memc.c - soclib/tsar L2 Confugration Controller |
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| 3 | * |
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| 4 | * Copyright (c) 2008,2009,2010,2011,2012,2013 Ghassan Almaless |
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| 5 | * Copyright (c) 2011,2012,2013 UPMC Sorbonne Universites |
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| 6 | * |
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| 7 | * This file is part of ALMOS-kernel. |
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| 8 | * |
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| 9 | * ALMOS-kernel is free software; you can redistribute it and/or modify it |
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| 10 | * under the terms of the GNU General Public License as published by |
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| 11 | * the Free Software Foundation; version 2.0 of the License. |
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| 12 | * |
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| 13 | * ALMOS-kernel is distributed in the hope that it will be useful, but |
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| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | * General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU General Public License |
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| 19 | * along with ALMOS-kernel; if not, write to the Free Software Foundation, |
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| 20 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 21 | */ |
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| 22 | |
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| 23 | #include <bits.h> |
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| 24 | #include <chdev.h> |
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| 25 | #include <driver.h> |
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| 26 | #include <drvdb.h> |
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| 27 | #include <errno.h> |
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| 28 | #include <vfs.h> |
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| 29 | #include <string.h> |
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| 30 | #include <soclib_memc.h> |
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| 31 | #include <vmm.h> |
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| 32 | |
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| 33 | #define MEMC_CNF_FUNC 0x0 |
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| 34 | #define MEMC_PRF_FUNC 0x1 |
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| 35 | #define MEMC_ERR_FUNC 0x2 |
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| 36 | |
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| 37 | #define MEMC_RD_MUPDT_SEL 0x0 |
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| 38 | #define MEMC_WR_MINVL_SEL 0x1 |
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| 39 | #define MEMC_LL_CLNUP_SEL 0x2 |
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| 40 | #define MEMC_SC_MUPDTT_SEL 0x3 |
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| 41 | #define MEMC_CS_MINVLT_SEL 0x4 |
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| 42 | #define MEMC_XX_BINVLT_SEL 0x5 |
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| 43 | |
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| 44 | #define MEMC_LOC_SEL 0x0 |
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| 45 | #define MEMC_REM_SEL 0x1 |
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| 46 | #define MEMC_OTH_SEL 0x2 |
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| 47 | |
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| 48 | #define MEMC_DIRCT_SEL 0x0 |
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| 49 | #define MEMC_COHER_SEL 0x1 |
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| 50 | |
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| 51 | #define MEMC_LO_SEL 0x0 |
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| 52 | #define MEMC_HI_SEL 0x1 |
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| 53 | |
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| 54 | #define MEMC_REG_IDX(z,y,x,w) (((z) << 6) | ((y) << 4) | ((x) << 1) | (w)) |
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| 55 | #define MEMC_REG(func,idx) (((func) << 9) | ((idx) << 2)) |
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| 56 | |
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| 57 | /* ---------------------------------------- */ |
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| 58 | /* PERFORMANCE REGISTERS FOR DIRECT TRAFFIC */ |
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| 59 | /* ---------------------------------------- */ |
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| 60 | |
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| 61 | #define MEMC_RD_LIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_LOC_SEL, MEMC_RD_MUPDT_SEL, MEMC_LO_SEL)) |
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| 62 | #define MEMC_RD_RIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_REM_SEL, MEMC_RD_MUPDT_SEL, MEMC_LO_SEL)) |
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| 63 | #define MEMC_RD_CIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_OTH_SEL, MEMC_RD_MUPDT_SEL, MEMC_LO_SEL)) |
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| 64 | |
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| 65 | #define MEMC_WR_LIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_LOC_SEL, MEMC_WR_MINVL_SEL, MEMC_LO_SEL)) |
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| 66 | #define MEMC_WR_RIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_REM_SEL, MEMC_WR_MINVL_SEL, MEMC_LO_SEL)) |
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| 67 | #define MEMC_WR_CIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_OTH_SEL, MEMC_WR_MINVL_SEL, MEMC_LO_SEL)) |
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| 68 | |
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| 69 | #define MEMC_LL_LIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_LOC_SEL, MEMC_LL_CLNUP_SEL, MEMC_LO_SEL)) |
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| 70 | #define MEMC_LL_RIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_REM_SEL, MEMC_LL_CLNUP_SEL, MEMC_LO_SEL)) |
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| 71 | #define MEMC_LL_CIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_OTH_SEL, MEMC_LL_CLNUP_SEL, MEMC_LO_SEL)) |
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| 72 | |
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| 73 | #define MEMC_SC_LIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_LOC_SEL, MEMC_SC_MUPDTT_SEL, MEMC_LO_SEL)) |
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| 74 | #define MEMC_SC_RIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_REM_SEL, MEMC_SC_MUPDTT_SEL, MEMC_LO_SEL)) |
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| 75 | #define MEMC_SC_CIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_OTH_SEL, MEMC_SC_MUPDTT_SEL, MEMC_LO_SEL)) |
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| 76 | |
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| 77 | #define MEMC_CS_LIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_LOC_SEL, MEMC_CS_MINVLT_SEL, MEMC_LO_SEL)) |
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| 78 | #define MEMC_CS_RIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_REM_SEL, MEMC_CS_MINVLT_SEL, MEMC_LO_SEL)) |
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| 79 | #define MEMC_CS_CIDX (MEMC_REG_IDX(MEMC_DIRCT_SEL, MEMC_OTH_SEL, MEMC_CS_MINVLT_SEL, MEMC_LO_SEL)) |
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| 80 | |
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| 81 | #define MEMC_RD_LOCAL MEMC_REG(MEMC_PRF_FUNC, MEMC_RD_LIDX) |
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| 82 | #define MEMC_RD_REMOTE MEMC_REG(MEMC_PRF_FUNC, MEMC_RD_RIDX) |
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| 83 | #define MEMC_RD_COST MEMC_REG(MEMC_PRF_FUNC, MEMC_RD_CIDX) |
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| 84 | |
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| 85 | #define MEMC_WR_LOCAL MEMC_REG(MEMC_PRF_FUNC, MEMC_WR_LIDX) |
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| 86 | #define MEMC_WR_REMOTE MEMC_REG(MEMC_PRF_FUNC, MEMC_WR_RIDX) |
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| 87 | #define MEMC_WR_COST MEMC_REG(MEMC_PRF_FUNC, MEMC_WR_CIDX) |
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| 88 | |
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| 89 | #define MEMC_LL_LOCAL MEMC_REG(MEMC_PRF_FUNC, MEMC_LL_LIDX) |
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| 90 | #define MEMC_LL_REMOTE MEMC_REG(MEMC_PRF_FUNC, MEMC_LL_RIDX) |
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| 91 | #define MEMC_LL_COST MEMC_REG(MEMC_PRF_FUNC, MEMC_LL_CIDX) |
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| 92 | |
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| 93 | #define MEMC_SC_LOCAL MEMC_REG(MEMC_PRF_FUNC, MEMC_SC_LIDX) |
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| 94 | #define MEMC_SC_REMOTE MEMC_REG(MEMC_PRF_FUNC, MEMC_SC_RIDX) |
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| 95 | #define MEMC_SC_COST MEMC_REG(MEMC_PRF_FUNC, MEMC_SC_CIDX) |
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| 96 | |
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| 97 | #define MEMC_CS_LOCAL MEMC_REG(MEMC_PRF_FUNC, MEMC_CS_LIDX) |
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| 98 | #define MEMC_CS_REMOTE MEMC_REG(MEMC_PRF_FUNC, MEMC_CS_RIDX) |
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| 99 | #define MEMC_CS_COST MEMC_REG(MEMC_PRF_FUNC, MEMC_CS_CIDX) |
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| 100 | |
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| 101 | /* ------------------------------------------- */ |
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| 102 | /* PERFORMANCE REGISTERS FOR COHERENCE TRAFFIC */ |
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| 103 | /* ------------------------------------------- */ |
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| 104 | |
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| 105 | #define MEMC_MUPDT_LIDX (MEMC_REG_IDX(MEMC_COHER_SEL, MEMC_LOC_SEL, MEMC_RD_MUPDT_SEL, MEMC_LO_SEL)) |
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| 106 | #define MEMC_MUPDT_RIDX (MEMC_REG_IDX(MEMC_COHER_SEL, MEMC_REM_SEL, MEMC_RD_MUPDT_SEL, MEMC_LO_SEL)) |
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| 107 | #define MEMC_MUPDT_CIDX (MEMC_REG_IDX(MEMC_COHER_SEL, MEMC_OTH_SEL, MEMC_RD_MUPDT_SEL, MEMC_LO_SEL)) |
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| 108 | |
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| 109 | #define MEMC_MINVL_LIDX (MEMC_REG_IDX(MEMC_COHER_SEL, MEMC_LOC_SEL, MEMC_WR_MINVL_SEL, MEMC_LO_SEL)) |
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| 110 | #define MEMC_MINVL_RIDX (MEMC_REG_IDX(MEMC_COHER_SEL, MEMC_REM_SEL, MEMC_WR_MINVL_SEL, MEMC_LO_SEL)) |
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| 111 | #define MEMC_MINVL_CIDX (MEMC_REG_IDX(MEMC_COHER_SEL, MEMC_OTH_SEL, MEMC_WR_MINVL_SEL, MEMC_LO_SEL)) |
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| 112 | |
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| 113 | #define MEMC_CLNUP_LIDX (MEMC_REG_IDX(MEMC_COHER_SEL, MEMC_LOC_SEL, MEMC_LL_CLNUP_SEL, MEMC_LO_SEL)) |
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| 114 | #define MEMC_CLNUP_RIDX (MEMC_REG_IDX(MEMC_COHER_SEL, MEMC_REM_SEL, MEMC_LL_CLNUP_SEL, MEMC_LO_SEL)) |
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| 115 | #define MEMC_CLNUP_CIDX (MEMC_REG_IDX(MEMC_COHER_SEL, MEMC_OTH_SEL, MEMC_LL_CLNUP_SEL, MEMC_LO_SEL)) |
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| 116 | |
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| 117 | #define MEMC_MUPDTT_TIDX (MEMC_REG_IDX(MEMC_COHER_SEL, MEMC_OTH_SEL, MEMC_SC_MUPDTT_SEL, MEMC_LO_SEL)) |
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| 118 | #define MEMC_MINVLT_TIDX (MEMC_REG_IDX(MEMC_COHER_SEL, MEMC_OTH_SEL, MEMC_CS_MINVLT_SEL, MEMC_LO_SEL)) |
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| 119 | #define MEMC_BINVLT_TIDX (MEMC_REG_IDX(MEMC_COHER_SEL, MEMC_OTH_SEL, MEMC_XX_BINVLT_SEL, MEMC_LO_SEL)) |
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| 120 | |
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| 121 | #define MEMC_MUPDT_LOCAL MEMC_REG(MEMC_PRF_FUNC, MEMC_MUPDT_LIDX) |
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| 122 | #define MEMC_MUPDT_REMOTE MEMC_REG(MEMC_PRF_FUNC, MEMC_MUPDT_RIDX) |
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| 123 | #define MEMC_MUPDT_COST MEMC_REG(MEMC_PRF_FUNC, MEMC_MUPDT_CIDX) |
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| 124 | |
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| 125 | #define MEMC_MINVL_LOCAL MEMC_REG(MEMC_PRF_FUNC, MEMC_MINVL_LIDX) |
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| 126 | #define MEMC_MINVL_REMOTE MEMC_REG(MEMC_PRF_FUNC, MEMC_MINVL_RIDX) |
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| 127 | #define MEMC_MINVL_COST MEMC_REG(MEMC_PRF_FUNC, MEMC_MINVL_CIDX) |
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| 128 | |
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| 129 | #define MEMC_CLNUP_LOCAL MEMC_REG(MEMC_PRF_FUNC, MEMC_CLNUP_LIDX) |
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| 130 | #define MEMC_CLNUP_REMOTE MEMC_REG(MEMC_PRF_FUNC, MEMC_CLNUP_RIDX) |
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| 131 | #define MEMC_CLNUP_COST MEMC_REG(MEMC_PRF_FUNC, MEMC_CLNUP_CIDX) |
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| 132 | |
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| 133 | #define MEMC_MUPDT_TOTAL MEMC_REG(MEMC_PRF_FUNC, MEMC_MUPDTT_TIDX) |
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| 134 | #define MEMC_MINVL_TOTAL MEMC_REG(MEMC_PRF_FUNC, MEMC_MINVLT_TIDX) |
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| 135 | #define MEMC_BINVL_TOTAL MEMC_REG(MEMC_PRF_FUNC, MEMC_BINVLT_TIDX) |
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| 136 | |
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| 137 | #define MEMC_REG_NR 27 |
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| 138 | |
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| 139 | static const uint16_t reg_tbl[MEMC_REG_NR] = { |
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| 140 | MEMC_RD_LOCAL, |
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| 141 | MEMC_RD_REMOTE, |
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| 142 | MEMC_RD_COST, |
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| 143 | MEMC_WR_LOCAL, |
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| 144 | MEMC_WR_REMOTE, |
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| 145 | MEMC_WR_COST, |
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| 146 | MEMC_LL_LOCAL, |
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| 147 | MEMC_LL_REMOTE, |
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| 148 | MEMC_LL_COST, |
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| 149 | MEMC_SC_LOCAL, |
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| 150 | MEMC_SC_REMOTE, |
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| 151 | MEMC_SC_COST, |
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| 152 | MEMC_CS_LOCAL, |
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| 153 | MEMC_CS_REMOTE, |
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| 154 | MEMC_CS_COST, |
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| 155 | MEMC_MUPDT_LOCAL, |
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| 156 | MEMC_MUPDT_REMOTE, |
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| 157 | MEMC_MUPDT_COST, |
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| 158 | MEMC_MINVL_LOCAL, |
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| 159 | MEMC_MINVL_REMOTE, |
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| 160 | MEMC_MINVL_COST, |
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| 161 | MEMC_CLNUP_LOCAL, |
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| 162 | MEMC_CLNUP_REMOTE, |
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| 163 | MEMC_CLNUP_COST, |
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| 164 | MEMC_MUPDT_TOTAL, |
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| 165 | MEMC_MINVL_TOTAL, |
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| 166 | MEMC_BINVL_TOTAL}; |
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| 167 | |
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| 168 | static sint_t memc_read(struct device_s *memc, dev_request_t *rq) |
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| 169 | { |
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| 170 | register size_t count; |
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| 171 | register uint_t i; |
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| 172 | uint_t *dst; |
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| 173 | |
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| 174 | assert(rq->file != NULL); |
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| 175 | |
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| 176 | count = rq->count >> 2; /* 32 bits registers */ |
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| 177 | dst = rq->dst; |
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| 178 | |
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| 179 | count = (count > MEMC_REG_NR) ? MEMC_REG_NR : count; |
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| 180 | |
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| 181 | for(i = 0; i < count; i++) |
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| 182 | { |
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| 183 | memcpy((void*)&dst[i], (void *)((uint_t)memc->base + reg_tbl[i]), 4); |
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| 184 | } |
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| 185 | return (count << 2); |
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| 186 | } |
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| 187 | |
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| 188 | static sint_t memc_write(struct device_s *memc, dev_request_t *rq) |
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| 189 | { |
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| 190 | return -ENOTSUPPORTED; |
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| 191 | } |
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| 192 | |
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| 193 | static error_t memc_lseek(struct device_s *memc, dev_request_t *rq) |
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| 194 | { |
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| 195 | return ENOTSUPPORTED; |
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| 196 | } |
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| 197 | |
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| 198 | static sint_t memc_get_params(struct device_s *memc, dev_params_t *params) |
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| 199 | { |
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| 200 | params->size = MEMC_REG_NR * 4; /* 32 bits registers */ |
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| 201 | return 0; |
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| 202 | } |
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| 203 | |
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| 204 | static sint_t memc_open(struct device_s *memc, dev_request_t *rq) |
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| 205 | { |
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| 206 | return 0; |
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| 207 | } |
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| 208 | |
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| 209 | static VM_REGION_PAGE_FAULT(memc_pagefault) |
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| 210 | { |
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| 211 | return EFAULT; |
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| 212 | } |
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| 213 | |
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| 214 | static struct vm_region_op_s memc_vm_region_op = |
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| 215 | { |
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| 216 | .page_in = NULL, |
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| 217 | .page_out = NULL, |
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| 218 | .page_lookup = NULL, |
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| 219 | .page_fault = memc_pagefault |
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| 220 | }; |
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| 221 | |
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| 222 | static error_t memc_mmap(struct device_s *memc, dev_request_t *rq) |
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| 223 | { |
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| 224 | struct vfs_file_s *file; |
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| 225 | struct vm_region_s *region; |
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| 226 | struct pmm_s *pmm; |
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| 227 | uint_t size; |
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| 228 | pmm_page_info_t info; |
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| 229 | vma_t current_vma; |
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| 230 | error_t err; |
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| 231 | |
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| 232 | file = rq->file; |
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| 233 | region = rq->region; |
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| 234 | pmm = ®ion->vmm->pmm; |
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| 235 | size = (uint_t) memc->data; |
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| 236 | |
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| 237 | if(size < (region->vm_limit - region->vm_start)) |
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| 238 | { |
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| 239 | printk(WARNING, "WARNING: %s: asked size (%d) exceed real one (%d)\n", |
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| 240 | __FUNCTION__, region->vm_limit - region->vm_start, size); |
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| 241 | return ERANGE; |
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| 242 | } |
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| 243 | |
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| 244 | printk(INFO, "INFO: %s: started, file inode %p, region <0x%x - 0x%x>\n", |
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| 245 | __FUNCTION__, |
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| 246 | file->f_inode, |
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| 247 | region->vm_start, |
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| 248 | region->vm_limit); |
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| 249 | |
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| 250 | if((err = pmm_get_page(pmm, (vma_t)memc->base, &info))) |
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| 251 | return err; |
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| 252 | |
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| 253 | region->vm_flags |= VM_REG_DEV; |
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| 254 | current_vma = region->vm_start; |
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| 255 | info.attr = region->vm_pgprot & ~(PMM_CACHED); |
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| 256 | info.cluster = NULL; |
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| 257 | size = region->vm_limit - region->vm_start; |
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| 258 | size = ARROUND_UP(size, PMM_PAGE_SIZE); |
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| 259 | |
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| 260 | while(size) |
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| 261 | { |
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| 262 | if((err = pmm_set_page(pmm, current_vma, &info))) |
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| 263 | return err; |
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| 264 | |
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| 265 | info.ppn ++; |
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| 266 | current_vma += PMM_PAGE_SIZE; |
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| 267 | size -= PMM_PAGE_SIZE; |
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| 268 | } |
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| 269 | |
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| 270 | region->vm_file = *file; |
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| 271 | //region->vm_mapper = NULL; |
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| 272 | |
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| 273 | region->vm_op = &memc_vm_region_op; |
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| 274 | return 0; |
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| 275 | } |
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| 276 | |
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| 277 | static error_t memc_munmap(struct device_s *memc, dev_request_t *rq) |
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| 278 | { |
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| 279 | struct vfs_file_s *file; |
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| 280 | struct vm_region_s *region; |
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| 281 | struct pmm_s *pmm; |
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| 282 | uint_t size; |
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| 283 | pmm_page_info_t info; |
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| 284 | vma_t current_vma; |
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| 285 | error_t err; |
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| 286 | |
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| 287 | file = rq->file; |
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| 288 | region = rq->region; |
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| 289 | pmm = ®ion->vmm->pmm; |
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| 290 | size = (uint_t) memc->data; |
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| 291 | |
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| 292 | if(size < (region->vm_limit - region->vm_start)) |
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| 293 | { |
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| 294 | printk(ERROR, "ERROR: %s: asked size (%d) exceed real one (%d)\n", |
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| 295 | __FUNCTION__, region->vm_limit - region->vm_start, size); |
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| 296 | return ERANGE; |
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| 297 | } |
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| 298 | |
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| 299 | current_vma = region->vm_start; |
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| 300 | info.attr = 0; |
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| 301 | info.ppn = 0; |
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| 302 | size = region->vm_limit - region->vm_start; |
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| 303 | |
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| 304 | while(size) |
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| 305 | { |
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| 306 | if((err = pmm_set_page(pmm, current_vma, &info))) |
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| 307 | return err; |
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| 308 | |
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| 309 | current_vma += PMM_PAGE_SIZE; |
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| 310 | size -= PMM_PAGE_SIZE; |
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| 311 | } |
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| 312 | |
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| 313 | return 0; |
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| 314 | } |
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| 315 | |
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| 316 | static uint_t memc_count = 0; |
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| 317 | |
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| 318 | error_t soclib_memc_init(struct device_s *memc) |
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| 319 | { |
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| 320 | memc->type = DEV_CHR; |
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| 321 | |
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| 322 | memc->op.dev.open = &memc_open; |
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| 323 | memc->op.dev.read = &memc_read; |
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| 324 | memc->op.dev.write = &memc_write; |
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| 325 | memc->op.dev.close = NULL; |
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| 326 | memc->op.dev.lseek = &memc_lseek; |
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| 327 | memc->op.dev.mmap = &memc_mmap; |
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| 328 | memc->op.dev.munmap = &memc_munmap; |
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| 329 | memc->op.dev.set_params = NULL; |
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| 330 | memc->op.dev.get_params = &memc_get_params; |
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| 331 | memc->op.drvid = SOCLIB_MEMC_ID; |
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| 332 | |
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| 333 | memc->data = (void*)memc->size; |
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| 334 | |
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| 335 | sprintk(memc->name, |
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| 336 | #if CONFIG_ROOTFS_IS_VFAT |
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| 337 | "MEMC%d" |
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| 338 | #else |
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| 339 | "memc%d" |
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| 340 | #endif |
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| 341 | , memc_count++); |
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| 342 | |
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| 343 | metafs_init(&memc->node, memc->name); |
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| 344 | return 0; |
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| 345 | } |
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| 346 | |
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| 347 | |
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| 348 | driver_t soclib_memc_driver = { .init = &soclib_memc_init }; |
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