1 /* 2 * Copyright 2012 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 "nv50.h" 25 #include "ram.h" 26 27 #include <core/client.h> 28 #include <core/enum.h> 29 #include <engine/fifo.h> 30 31 int 32 nv50_fb_memtype[0x80] = { 33 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 34 1, 1, 1, 1, 0, 0, 0, 0, 2, 2, 2, 2, 0, 0, 0, 0, 35 1, 1, 1, 1, 1, 1, 1, 0, 2, 2, 2, 2, 2, 2, 2, 0, 36 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 37 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 0, 0, 38 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 39 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 2, 2, 2, 2, 40 1, 0, 2, 0, 1, 0, 2, 0, 1, 1, 2, 2, 1, 1, 0, 0 41 }; 42 43 static int 44 nv50_fb_ram_new(struct nvkm_fb *base, struct nvkm_ram **pram) 45 { 46 struct nv50_fb *fb = nv50_fb(base); 47 return fb->func->ram_new(&fb->base, pram); 48 } 49 50 static bool 51 nv50_fb_memtype_valid(struct nvkm_fb *fb, u32 memtype) 52 { 53 return nv50_fb_memtype[(memtype & 0xff00) >> 8] != 0; 54 } 55 56 static const struct nvkm_enum vm_dispatch_subclients[] = { 57 { 0x00000000, "GRCTX" }, 58 { 0x00000001, "NOTIFY" }, 59 { 0x00000002, "QUERY" }, 60 { 0x00000003, "COND" }, 61 { 0x00000004, "M2M_IN" }, 62 { 0x00000005, "M2M_OUT" }, 63 { 0x00000006, "M2M_NOTIFY" }, 64 {} 65 }; 66 67 static const struct nvkm_enum vm_ccache_subclients[] = { 68 { 0x00000000, "CB" }, 69 { 0x00000001, "TIC" }, 70 { 0x00000002, "TSC" }, 71 {} 72 }; 73 74 static const struct nvkm_enum vm_prop_subclients[] = { 75 { 0x00000000, "RT0" }, 76 { 0x00000001, "RT1" }, 77 { 0x00000002, "RT2" }, 78 { 0x00000003, "RT3" }, 79 { 0x00000004, "RT4" }, 80 { 0x00000005, "RT5" }, 81 { 0x00000006, "RT6" }, 82 { 0x00000007, "RT7" }, 83 { 0x00000008, "ZETA" }, 84 { 0x00000009, "LOCAL" }, 85 { 0x0000000a, "GLOBAL" }, 86 { 0x0000000b, "STACK" }, 87 { 0x0000000c, "DST2D" }, 88 {} 89 }; 90 91 static const struct nvkm_enum vm_pfifo_subclients[] = { 92 { 0x00000000, "PUSHBUF" }, 93 { 0x00000001, "SEMAPHORE" }, 94 {} 95 }; 96 97 static const struct nvkm_enum vm_bar_subclients[] = { 98 { 0x00000000, "FB" }, 99 { 0x00000001, "IN" }, 100 {} 101 }; 102 103 static const struct nvkm_enum vm_client[] = { 104 { 0x00000000, "STRMOUT" }, 105 { 0x00000003, "DISPATCH", vm_dispatch_subclients }, 106 { 0x00000004, "PFIFO_WRITE" }, 107 { 0x00000005, "CCACHE", vm_ccache_subclients }, 108 { 0x00000006, "PMSPPP" }, 109 { 0x00000007, "CLIPID" }, 110 { 0x00000008, "PFIFO_READ" }, 111 { 0x00000009, "VFETCH" }, 112 { 0x0000000a, "TEXTURE" }, 113 { 0x0000000b, "PROP", vm_prop_subclients }, 114 { 0x0000000c, "PVP" }, 115 { 0x0000000d, "PBSP" }, 116 { 0x0000000e, "PCRYPT" }, 117 { 0x0000000f, "PCOUNTER" }, 118 { 0x00000011, "PDAEMON" }, 119 {} 120 }; 121 122 static const struct nvkm_enum vm_engine[] = { 123 { 0x00000000, "PGRAPH" }, 124 { 0x00000001, "PVP" }, 125 { 0x00000004, "PEEPHOLE" }, 126 { 0x00000005, "PFIFO", vm_pfifo_subclients }, 127 { 0x00000006, "BAR", vm_bar_subclients }, 128 { 0x00000008, "PMSPPP" }, 129 { 0x00000008, "PMPEG" }, 130 { 0x00000009, "PBSP" }, 131 { 0x0000000a, "PCRYPT" }, 132 { 0x0000000b, "PCOUNTER" }, 133 { 0x0000000c, "SEMAPHORE_BG" }, 134 { 0x0000000d, "PCE0" }, 135 { 0x0000000e, "PMU" }, 136 {} 137 }; 138 139 static const struct nvkm_enum vm_fault[] = { 140 { 0x00000000, "PT_NOT_PRESENT" }, 141 { 0x00000001, "PT_TOO_SHORT" }, 142 { 0x00000002, "PAGE_NOT_PRESENT" }, 143 { 0x00000003, "PAGE_SYSTEM_ONLY" }, 144 { 0x00000004, "PAGE_READ_ONLY" }, 145 { 0x00000006, "NULL_DMAOBJ" }, 146 { 0x00000007, "WRONG_MEMTYPE" }, 147 { 0x0000000b, "VRAM_LIMIT" }, 148 { 0x0000000f, "DMAOBJ_LIMIT" }, 149 {} 150 }; 151 152 static void 153 nv50_fb_intr(struct nvkm_fb *base) 154 { 155 struct nv50_fb *fb = nv50_fb(base); 156 struct nvkm_subdev *subdev = &fb->base.subdev; 157 struct nvkm_device *device = subdev->device; 158 struct nvkm_fifo *fifo = device->fifo; 159 struct nvkm_fifo_chan *chan; 160 const struct nvkm_enum *en, *re, *cl, *sc; 161 u32 trap[6], idx, inst; 162 u8 st0, st1, st2, st3; 163 unsigned long flags; 164 int i; 165 166 idx = nvkm_rd32(device, 0x100c90); 167 if (!(idx & 0x80000000)) 168 return; 169 idx &= 0x00ffffff; 170 171 for (i = 0; i < 6; i++) { 172 nvkm_wr32(device, 0x100c90, idx | i << 24); 173 trap[i] = nvkm_rd32(device, 0x100c94); 174 } 175 nvkm_wr32(device, 0x100c90, idx | 0x80000000); 176 177 /* decode status bits into something more useful */ 178 if (device->chipset < 0xa3 || 179 device->chipset == 0xaa || device->chipset == 0xac) { 180 st0 = (trap[0] & 0x0000000f) >> 0; 181 st1 = (trap[0] & 0x000000f0) >> 4; 182 st2 = (trap[0] & 0x00000f00) >> 8; 183 st3 = (trap[0] & 0x0000f000) >> 12; 184 } else { 185 st0 = (trap[0] & 0x000000ff) >> 0; 186 st1 = (trap[0] & 0x0000ff00) >> 8; 187 st2 = (trap[0] & 0x00ff0000) >> 16; 188 st3 = (trap[0] & 0xff000000) >> 24; 189 } 190 inst = ((trap[2] << 16) | trap[1]) << 12; 191 192 en = nvkm_enum_find(vm_engine, st0); 193 re = nvkm_enum_find(vm_fault , st1); 194 cl = nvkm_enum_find(vm_client, st2); 195 if (cl && cl->data) sc = nvkm_enum_find(cl->data, st3); 196 else if (en && en->data) sc = nvkm_enum_find(en->data, st3); 197 else sc = NULL; 198 199 chan = nvkm_fifo_chan_inst(fifo, inst, &flags); 200 nvkm_error(subdev, "trapped %s at %02x%04x%04x on channel %d [%08x %s] " 201 "engine %02x [%s] client %02x [%s] " 202 "subclient %02x [%s] reason %08x [%s]\n", 203 (trap[5] & 0x00000100) ? "read" : "write", 204 trap[5] & 0xff, trap[4] & 0xffff, trap[3] & 0xffff, 205 chan ? chan->chid : -1, inst, 206 chan ? chan->object.client->name : "unknown", 207 st0, en ? en->name : "", 208 st2, cl ? cl->name : "", st3, sc ? sc->name : "", 209 st1, re ? re->name : ""); 210 nvkm_fifo_chan_put(fifo, flags, &chan); 211 } 212 213 static void 214 nv50_fb_init(struct nvkm_fb *base) 215 { 216 struct nv50_fb *fb = nv50_fb(base); 217 struct nvkm_device *device = fb->base.subdev.device; 218 219 /* Not a clue what this is exactly. Without pointing it at a 220 * scratch page, VRAM->GART blits with M2MF (as in DDX DFS) 221 * cause IOMMU "read from address 0" errors (rh#561267) 222 */ 223 nvkm_wr32(device, 0x100c08, fb->r100c08 >> 8); 224 225 /* This is needed to get meaningful information from 100c90 226 * on traps. No idea what these values mean exactly. */ 227 nvkm_wr32(device, 0x100c90, fb->func->trap); 228 } 229 230 static void * 231 nv50_fb_dtor(struct nvkm_fb *base) 232 { 233 struct nv50_fb *fb = nv50_fb(base); 234 struct nvkm_device *device = fb->base.subdev.device; 235 236 if (fb->r100c08_page) { 237 dma_unmap_page(device->dev, fb->r100c08, PAGE_SIZE, 238 DMA_BIDIRECTIONAL); 239 __free_page(fb->r100c08_page); 240 } 241 242 return fb; 243 } 244 245 static const struct nvkm_fb_func 246 nv50_fb_ = { 247 .dtor = nv50_fb_dtor, 248 .init = nv50_fb_init, 249 .intr = nv50_fb_intr, 250 .ram_new = nv50_fb_ram_new, 251 .memtype_valid = nv50_fb_memtype_valid, 252 }; 253 254 int 255 nv50_fb_new_(const struct nv50_fb_func *func, struct nvkm_device *device, 256 int index, struct nvkm_fb **pfb) 257 { 258 struct nv50_fb *fb; 259 260 if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL))) 261 return -ENOMEM; 262 nvkm_fb_ctor(&nv50_fb_, device, index, &fb->base); 263 fb->func = func; 264 *pfb = &fb->base; 265 266 fb->r100c08_page = alloc_page(GFP_KERNEL | __GFP_ZERO); 267 if (fb->r100c08_page) { 268 fb->r100c08 = dma_map_page(device->dev, fb->r100c08_page, 0, 269 PAGE_SIZE, DMA_BIDIRECTIONAL); 270 if (dma_mapping_error(device->dev, fb->r100c08)) 271 return -EFAULT; 272 } else { 273 nvkm_warn(&fb->base.subdev, "failed 100c08 page alloc\n"); 274 } 275 276 return 0; 277 } 278 279 static const struct nv50_fb_func 280 nv50_fb = { 281 .ram_new = nv50_ram_new, 282 .trap = 0x000707ff, 283 }; 284 285 int 286 nv50_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb) 287 { 288 return nv50_fb_new_(&nv50_fb, device, index, pfb); 289 } 290