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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | /* * Copyright 2013 Red Hat Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Ben Skeggs <bskeggs@redhat.com> */ #include "ram.h" /* binary driver only executes this path if the condition (a) is true * for any configuration (combination of rammap+ramcfg+timing) that * can be reached on a given card. for now, we will execute the branch * unconditionally in the hope that a "false everywhere" in the bios * tables doesn't actually mean "don't touch this". */ #define NOTE00(a) 1 int nvkm_gddr5_calc(struct nvkm_ram *ram, bool nuts) { int pd, lf, xd, vh, vr, vo, l3; int WL, CL, WR, at[2], dt, ds; int rq = ram->freq < 1000000; /* XXX */ xd = !ram->next->bios.ramcfg_DLLoff; switch (ram->next->bios.ramcfg_ver) { case 0x11: pd = ram->next->bios.ramcfg_11_01_80; lf = ram->next->bios.ramcfg_11_01_40; vh = ram->next->bios.ramcfg_11_02_10; vr = ram->next->bios.ramcfg_11_02_04; vo = ram->next->bios.ramcfg_11_06; l3 = !ram->next->bios.ramcfg_11_07_02; break; default: return -ENOSYS; } switch (ram->next->bios.timing_ver) { case 0x20: WL = (ram->next->bios.timing[1] & 0x00000f80) >> 7; CL = (ram->next->bios.timing[1] & 0x0000001f); WR = (ram->next->bios.timing[2] & 0x007f0000) >> 16; at[0] = ram->next->bios.timing_20_2e_c0; at[1] = ram->next->bios.timing_20_2e_30; dt = ram->next->bios.timing_20_2e_03; ds = ram->next->bios.timing_20_2f_03; break; default: return -ENOSYS; } if (WL < 1 || WL > 7 || CL < 5 || CL > 36 || WR < 4 || WR > 35) return -EINVAL; CL -= 5; WR -= 4; ram->mr[0] &= ~0xf7f; ram->mr[0] |= (WR & 0x0f) << 8; ram->mr[0] |= (CL & 0x0f) << 3; ram->mr[0] |= (WL & 0x07) << 0; ram->mr[1] &= ~0x0bf; ram->mr[1] |= (xd & 0x01) << 7; ram->mr[1] |= (at[0] & 0x03) << 4; ram->mr[1] |= (dt & 0x03) << 2; ram->mr[1] |= (ds & 0x03) << 0; /* this seems wrong, alternate field used for the broadcast * on nuts vs non-nuts configs.. meh, it matches for now. */ ram->mr1_nuts = ram->mr[1]; if (nuts) { ram->mr[1] &= ~0x030; ram->mr[1] |= (at[1] & 0x03) << 4; } ram->mr[3] &= ~0x020; ram->mr[3] |= (rq & 0x01) << 5; ram->mr[5] &= ~0x004; ram->mr[5] |= (l3 << 2); if (!vo) vo = (ram->mr[6] & 0xff0) >> 4; if (ram->mr[6] & 0x001) pd = 1; /* binary driver does this.. bug? */ ram->mr[6] &= ~0xff1; ram->mr[6] |= (vo & 0xff) << 4; ram->mr[6] |= (pd & 0x01) << 0; if (NOTE00(vr)) { ram->mr[7] &= ~0x300; ram->mr[7] |= (vr & 0x03) << 8; } ram->mr[7] &= ~0x088; ram->mr[7] |= (vh & 0x01) << 7; ram->mr[7] |= (lf & 0x01) << 3; ram->mr[8] &= ~0x003; ram->mr[8] |= (WR & 0x10) >> 3; ram->mr[8] |= (CL & 0x10) >> 4; return 0; } |