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 static int 32 nv50_fb_ram_new(struct nvkm_fb *base, struct nvkm_ram **pram) 33 { 34 struct nv50_fb *fb = nv50_fb(base); 35 return fb->func->ram_new(&fb->base, pram); 36 } 37 38 static const struct nvkm_enum vm_dispatch_subclients[] = { 39 { 0x00000000, "GRCTX" }, 40 { 0x00000001, "NOTIFY" }, 41 { 0x00000002, "QUERY" }, 42 { 0x00000003, "COND" }, 43 { 0x00000004, "M2M_IN" }, 44 { 0x00000005, "M2M_OUT" }, 45 { 0x00000006, "M2M_NOTIFY" }, 46 {} 47 }; 48 49 static const struct nvkm_enum vm_ccache_subclients[] = { 50 { 0x00000000, "CB" }, 51 { 0x00000001, "TIC" }, 52 { 0x00000002, "TSC" }, 53 {} 54 }; 55 56 static const struct nvkm_enum vm_prop_subclients[] = { 57 { 0x00000000, "RT0" }, 58 { 0x00000001, "RT1" }, 59 { 0x00000002, "RT2" }, 60 { 0x00000003, "RT3" }, 61 { 0x00000004, "RT4" }, 62 { 0x00000005, "RT5" }, 63 { 0x00000006, "RT6" }, 64 { 0x00000007, "RT7" }, 65 { 0x00000008, "ZETA" }, 66 { 0x00000009, "LOCAL" }, 67 { 0x0000000a, "GLOBAL" }, 68 { 0x0000000b, "STACK" }, 69 { 0x0000000c, "DST2D" }, 70 {} 71 }; 72 73 static const struct nvkm_enum vm_pfifo_subclients[] = { 74 { 0x00000000, "PUSHBUF" }, 75 { 0x00000001, "SEMAPHORE" }, 76 {} 77 }; 78 79 static const struct nvkm_enum vm_bar_subclients[] = { 80 { 0x00000000, "FB" }, 81 { 0x00000001, "IN" }, 82 {} 83 }; 84 85 static const struct nvkm_enum vm_client[] = { 86 { 0x00000000, "STRMOUT" }, 87 { 0x00000003, "DISPATCH", vm_dispatch_subclients }, 88 { 0x00000004, "PFIFO_WRITE" }, 89 { 0x00000005, "CCACHE", vm_ccache_subclients }, 90 { 0x00000006, "PMSPPP" }, 91 { 0x00000007, "CLIPID" }, 92 { 0x00000008, "PFIFO_READ" }, 93 { 0x00000009, "VFETCH" }, 94 { 0x0000000a, "TEXTURE" }, 95 { 0x0000000b, "PROP", vm_prop_subclients }, 96 { 0x0000000c, "PVP" }, 97 { 0x0000000d, "PBSP" }, 98 { 0x0000000e, "PCRYPT" }, 99 { 0x0000000f, "PCOUNTER" }, 100 { 0x00000011, "PDAEMON" }, 101 {} 102 }; 103 104 static const struct nvkm_enum vm_engine[] = { 105 { 0x00000000, "PGRAPH" }, 106 { 0x00000001, "PVP" }, 107 { 0x00000004, "PEEPHOLE" }, 108 { 0x00000005, "PFIFO", vm_pfifo_subclients }, 109 { 0x00000006, "BAR", vm_bar_subclients }, 110 { 0x00000008, "PMSPPP" }, 111 { 0x00000008, "PMPEG" }, 112 { 0x00000009, "PBSP" }, 113 { 0x0000000a, "PCRYPT" }, 114 { 0x0000000b, "PCOUNTER" }, 115 { 0x0000000c, "SEMAPHORE_BG" }, 116 { 0x0000000d, "PCE0" }, 117 { 0x0000000e, "PMU" }, 118 {} 119 }; 120 121 static const struct nvkm_enum vm_fault[] = { 122 { 0x00000000, "PT_NOT_PRESENT" }, 123 { 0x00000001, "PT_TOO_SHORT" }, 124 { 0x00000002, "PAGE_NOT_PRESENT" }, 125 { 0x00000003, "PAGE_SYSTEM_ONLY" }, 126 { 0x00000004, "PAGE_READ_ONLY" }, 127 { 0x00000006, "NULL_DMAOBJ" }, 128 { 0x00000007, "WRONG_MEMTYPE" }, 129 { 0x0000000b, "VRAM_LIMIT" }, 130 { 0x0000000f, "DMAOBJ_LIMIT" }, 131 {} 132 }; 133 134 static void 135 nv50_fb_intr(struct nvkm_fb *base) 136 { 137 struct nv50_fb *fb = nv50_fb(base); 138 struct nvkm_subdev *subdev = &fb->base.subdev; 139 struct nvkm_device *device = subdev->device; 140 struct nvkm_fifo *fifo = device->fifo; 141 struct nvkm_fifo_chan *chan; 142 const struct nvkm_enum *en, *re, *cl, *sc; 143 u32 trap[6], idx, inst; 144 u8 st0, st1, st2, st3; 145 unsigned long flags; 146 int i; 147 148 idx = nvkm_rd32(device, 0x100c90); 149 if (!(idx & 0x80000000)) 150 return; 151 idx &= 0x00ffffff; 152 153 for (i = 0; i < 6; i++) { 154 nvkm_wr32(device, 0x100c90, idx | i << 24); 155 trap[i] = nvkm_rd32(device, 0x100c94); 156 } 157 nvkm_wr32(device, 0x100c90, idx | 0x80000000); 158 159 /* decode status bits into something more useful */ 160 if (device->chipset < 0xa3 || 161 device->chipset == 0xaa || device->chipset == 0xac) { 162 st0 = (trap[0] & 0x0000000f) >> 0; 163 st1 = (trap[0] & 0x000000f0) >> 4; 164 st2 = (trap[0] & 0x00000f00) >> 8; 165 st3 = (trap[0] & 0x0000f000) >> 12; 166 } else { 167 st0 = (trap[0] & 0x000000ff) >> 0; 168 st1 = (trap[0] & 0x0000ff00) >> 8; 169 st2 = (trap[0] & 0x00ff0000) >> 16; 170 st3 = (trap[0] & 0xff000000) >> 24; 171 } 172 inst = ((trap[2] << 16) | trap[1]) << 12; 173 174 en = nvkm_enum_find(vm_engine, st0); 175 re = nvkm_enum_find(vm_fault , st1); 176 cl = nvkm_enum_find(vm_client, st2); 177 if (cl && cl->data) sc = nvkm_enum_find(cl->data, st3); 178 else if (en && en->data) sc = nvkm_enum_find(en->data, st3); 179 else sc = NULL; 180 181 chan = nvkm_fifo_chan_inst(fifo, inst, &flags); 182 nvkm_error(subdev, "trapped %s at %02x%04x%04x on channel %d [%08x %s] " 183 "engine %02x [%s] client %02x [%s] " 184 "subclient %02x [%s] reason %08x [%s]\n", 185 (trap[5] & 0x00000100) ? "read" : "write", 186 trap[5] & 0xff, trap[4] & 0xffff, trap[3] & 0xffff, 187 chan ? chan->chid : -1, inst, 188 chan ? chan->object.client->name : "unknown", 189 st0, en ? en->name : "", 190 st2, cl ? cl->name : "", st3, sc ? sc->name : "", 191 st1, re ? re->name : ""); 192 nvkm_fifo_chan_put(fifo, flags, &chan); 193 } 194 195 static int 196 nv50_fb_oneinit(struct nvkm_fb *base) 197 { 198 struct nv50_fb *fb = nv50_fb(base); 199 struct nvkm_device *device = fb->base.subdev.device; 200 201 fb->r100c08_page = alloc_page(GFP_KERNEL | __GFP_ZERO); 202 if (fb->r100c08_page) { 203 fb->r100c08 = dma_map_page(device->dev, fb->r100c08_page, 0, 204 PAGE_SIZE, DMA_BIDIRECTIONAL); 205 if (dma_mapping_error(device->dev, fb->r100c08)) 206 return -EFAULT; 207 } 208 209 return 0; 210 } 211 212 static void 213 nv50_fb_init(struct nvkm_fb *base) 214 { 215 struct nv50_fb *fb = nv50_fb(base); 216 struct nvkm_device *device = fb->base.subdev.device; 217 218 /* Not a clue what this is exactly. Without pointing it at a 219 * scratch page, VRAM->GART blits with M2MF (as in DDX DFS) 220 * cause IOMMU "read from address 0" errors (rh#561267) 221 */ 222 nvkm_wr32(device, 0x100c08, fb->r100c08 >> 8); 223 224 /* This is needed to get meaningful information from 100c90 225 * on traps. No idea what these values mean exactly. */ 226 nvkm_wr32(device, 0x100c90, fb->func->trap); 227 } 228 229 static u32 230 nv50_fb_tags(struct nvkm_fb *base) 231 { 232 struct nv50_fb *fb = nv50_fb(base); 233 if (fb->func->tags) 234 return fb->func->tags(&fb->base); 235 return 0; 236 } 237 238 static void * 239 nv50_fb_dtor(struct nvkm_fb *base) 240 { 241 struct nv50_fb *fb = nv50_fb(base); 242 struct nvkm_device *device = fb->base.subdev.device; 243 244 if (fb->r100c08_page) { 245 dma_unmap_page(device->dev, fb->r100c08, PAGE_SIZE, 246 DMA_BIDIRECTIONAL); 247 __free_page(fb->r100c08_page); 248 } 249 250 return fb; 251 } 252 253 static const struct nvkm_fb_func 254 nv50_fb_ = { 255 .dtor = nv50_fb_dtor, 256 .tags = nv50_fb_tags, 257 .oneinit = nv50_fb_oneinit, 258 .init = nv50_fb_init, 259 .intr = nv50_fb_intr, 260 .ram_new = nv50_fb_ram_new, 261 }; 262 263 int 264 nv50_fb_new_(const struct nv50_fb_func *func, struct nvkm_device *device, 265 enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb) 266 { 267 struct nv50_fb *fb; 268 269 if (!(fb = kzalloc(sizeof(*fb), GFP_KERNEL))) 270 return -ENOMEM; 271 nvkm_fb_ctor(&nv50_fb_, device, type, inst, &fb->base); 272 fb->func = func; 273 *pfb = &fb->base; 274 return 0; 275 } 276 277 static const struct nv50_fb_func 278 nv50_fb = { 279 .ram_new = nv50_ram_new, 280 .tags = nv20_fb_tags, 281 .trap = 0x000707ff, 282 }; 283 284 int 285 nv50_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb) 286 { 287 return nv50_fb_new_(&nv50_fb, device, type, inst, pfb); 288 } 289