1 /* 2 * Copyright 2014 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Ben Skeggs 23 */ 24 #include "priv.h" 25 26 #include <subdev/fb.h> 27 #include <subdev/timer.h> 28 29 static void 30 gm107_ltc_cbc_clear(struct nvkm_ltc *ltc, u32 start, u32 limit) 31 { 32 struct nvkm_device *device = ltc->subdev.device; 33 nvkm_wr32(device, 0x17e270, start); 34 nvkm_wr32(device, 0x17e274, limit); 35 nvkm_wr32(device, 0x17e26c, 0x00000004); 36 } 37 38 static void 39 gm107_ltc_cbc_wait(struct nvkm_ltc *ltc) 40 { 41 struct nvkm_device *device = ltc->subdev.device; 42 int c, s; 43 for (c = 0; c < ltc->ltc_nr; c++) { 44 for (s = 0; s < ltc->lts_nr; s++) { 45 const u32 addr = 0x14046c + (c * 0x2000) + (s * 0x200); 46 nvkm_msec(device, 2000, 47 if (!nvkm_rd32(device, addr)) 48 break; 49 ); 50 } 51 } 52 } 53 54 static void 55 gm107_ltc_zbc_clear_color(struct nvkm_ltc *ltc, int i, const u32 color[4]) 56 { 57 struct nvkm_device *device = ltc->subdev.device; 58 nvkm_mask(device, 0x17e338, 0x0000000f, i); 59 nvkm_wr32(device, 0x17e33c, color[0]); 60 nvkm_wr32(device, 0x17e340, color[1]); 61 nvkm_wr32(device, 0x17e344, color[2]); 62 nvkm_wr32(device, 0x17e348, color[3]); 63 } 64 65 static void 66 gm107_ltc_zbc_clear_depth(struct nvkm_ltc *ltc, int i, const u32 depth) 67 { 68 struct nvkm_device *device = ltc->subdev.device; 69 nvkm_mask(device, 0x17e338, 0x0000000f, i); 70 nvkm_wr32(device, 0x17e34c, depth); 71 } 72 73 static void 74 gm107_ltc_lts_isr(struct nvkm_ltc *ltc, int c, int s) 75 { 76 struct nvkm_subdev *subdev = <c->subdev; 77 struct nvkm_device *device = subdev->device; 78 u32 base = 0x140000 + (c * 0x2000) + (s * 0x400); 79 u32 stat = nvkm_rd32(device, base + 0x00c); 80 81 if (stat) { 82 nvkm_error(subdev, "LTC%d_LTS%d: %08x\n", c, s, stat); 83 nvkm_wr32(device, base + 0x00c, stat); 84 } 85 } 86 87 static void 88 gm107_ltc_intr(struct nvkm_ltc *ltc) 89 { 90 struct nvkm_device *device = ltc->subdev.device; 91 u32 mask; 92 93 mask = nvkm_rd32(device, 0x00017c); 94 while (mask) { 95 u32 s, c = __ffs(mask); 96 for (s = 0; s < ltc->lts_nr; s++) 97 gm107_ltc_lts_isr(ltc, c, s); 98 mask &= ~(1 << c); 99 } 100 } 101 102 static int 103 gm107_ltc_oneinit(struct nvkm_ltc *ltc) 104 { 105 struct nvkm_device *device = ltc->subdev.device; 106 const u32 parts = nvkm_rd32(device, 0x022438); 107 const u32 mask = nvkm_rd32(device, 0x021c14); 108 const u32 slice = nvkm_rd32(device, 0x17e280) >> 28; 109 int i; 110 111 for (i = 0; i < parts; i++) { 112 if (!(mask & (1 << i))) 113 ltc->ltc_nr++; 114 } 115 ltc->lts_nr = slice; 116 117 return gf100_ltc_oneinit_tag_ram(ltc); 118 } 119 120 static void 121 gm107_ltc_init(struct nvkm_ltc *ltc) 122 { 123 struct nvkm_device *device = ltc->subdev.device; 124 u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001); 125 126 nvkm_wr32(device, 0x17e27c, ltc->ltc_nr); 127 nvkm_wr32(device, 0x17e278, ltc->tag_base); 128 nvkm_mask(device, 0x17e264, 0x00000002, lpg128 ? 0x00000002 : 0x00000000); 129 } 130 131 static const struct nvkm_ltc_func 132 gm107_ltc = { 133 .oneinit = gm107_ltc_oneinit, 134 .init = gm107_ltc_init, 135 .intr = gm107_ltc_intr, 136 .cbc_clear = gm107_ltc_cbc_clear, 137 .cbc_wait = gm107_ltc_cbc_wait, 138 .zbc = 16, 139 .zbc_clear_color = gm107_ltc_zbc_clear_color, 140 .zbc_clear_depth = gm107_ltc_zbc_clear_depth, 141 }; 142 143 int 144 gm107_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc) 145 { 146 return nvkm_ltc_new_(&gm107_ltc, device, index, pltc); 147 } 148