Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 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 | |
| 25 | #include <core/object.h> |
| 26 | #include <core/client.h> |
| 27 | #include <core/device.h> |
| 28 | #include <core/class.h> |
| 29 | |
| 30 | #include <subdev/fb.h> |
| 31 | #include <subdev/vm.h> |
| 32 | #include <subdev/instmem.h> |
| 33 | |
| 34 | #include <engine/software.h> |
| 35 | |
| 36 | #include "nouveau_drm.h" |
| 37 | #include "nouveau_dma.h" |
| 38 | #include "nouveau_bo.h" |
| 39 | #include "nouveau_chan.h" |
| 40 | #include "nouveau_fence.h" |
| 41 | #include "nouveau_abi16.h" |
| 42 | |
| 43 | MODULE_PARM_DESC(vram_pushbuf, "Create DMA push buffers in VRAM"); |
| 44 | static int nouveau_vram_pushbuf; |
| 45 | module_param_named(vram_pushbuf, nouveau_vram_pushbuf, int, 0400); |
| 46 | |
| 47 | int |
| 48 | nouveau_channel_idle(struct nouveau_channel *chan) |
| 49 | { |
Ben Skeggs | da07e52 | 2012-09-12 13:40:47 +1000 | [diff] [blame] | 50 | struct nouveau_cli *cli = chan->cli; |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 51 | struct nouveau_fence *fence = NULL; |
| 52 | int ret; |
| 53 | |
Ben Skeggs | 264ce19 | 2013-02-14 13:43:21 +1000 | [diff] [blame] | 54 | ret = nouveau_fence_new(chan, false, &fence); |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 55 | if (!ret) { |
| 56 | ret = nouveau_fence_wait(fence, false, false); |
| 57 | nouveau_fence_unref(&fence); |
| 58 | } |
| 59 | |
| 60 | if (ret) |
Marcin Slusarz | 93260d3 | 2012-12-09 23:00:34 +0100 | [diff] [blame] | 61 | NV_ERROR(cli, "failed to idle channel 0x%08x [%s]\n", |
| 62 | chan->handle, cli->base.name); |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 63 | return ret; |
| 64 | } |
| 65 | |
| 66 | void |
| 67 | nouveau_channel_del(struct nouveau_channel **pchan) |
| 68 | { |
| 69 | struct nouveau_channel *chan = *pchan; |
| 70 | if (chan) { |
| 71 | struct nouveau_object *client = nv_object(chan->cli); |
| 72 | if (chan->fence) { |
| 73 | nouveau_channel_idle(chan); |
| 74 | nouveau_fence(chan->drm)->context_del(chan); |
| 75 | } |
| 76 | nouveau_object_del(client, NVDRM_DEVICE, chan->handle); |
| 77 | nouveau_object_del(client, NVDRM_DEVICE, chan->push.handle); |
| 78 | nouveau_bo_vma_del(chan->push.buffer, &chan->push.vma); |
| 79 | nouveau_bo_unmap(chan->push.buffer); |
Marcin Slusarz | 124ea29 | 2012-11-25 23:02:28 +0100 | [diff] [blame] | 80 | if (chan->push.buffer && chan->push.buffer->pin_refcnt) |
| 81 | nouveau_bo_unpin(chan->push.buffer); |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 82 | nouveau_bo_ref(NULL, &chan->push.buffer); |
| 83 | kfree(chan); |
| 84 | } |
| 85 | *pchan = NULL; |
| 86 | } |
| 87 | |
| 88 | static int |
| 89 | nouveau_channel_prep(struct nouveau_drm *drm, struct nouveau_cli *cli, |
| 90 | u32 parent, u32 handle, u32 size, |
| 91 | struct nouveau_channel **pchan) |
| 92 | { |
| 93 | struct nouveau_device *device = nv_device(drm->device); |
| 94 | struct nouveau_instmem *imem = nouveau_instmem(device); |
| 95 | struct nouveau_vmmgr *vmm = nouveau_vmmgr(device); |
| 96 | struct nouveau_fb *pfb = nouveau_fb(device); |
| 97 | struct nouveau_client *client = &cli->base; |
| 98 | struct nv_dma_class args = {}; |
| 99 | struct nouveau_channel *chan; |
| 100 | struct nouveau_object *push; |
| 101 | u32 target; |
| 102 | int ret; |
| 103 | |
| 104 | chan = *pchan = kzalloc(sizeof(*chan), GFP_KERNEL); |
| 105 | if (!chan) |
| 106 | return -ENOMEM; |
| 107 | |
| 108 | chan->cli = cli; |
| 109 | chan->drm = drm; |
| 110 | chan->handle = handle; |
| 111 | |
| 112 | /* allocate memory for dma push buffer */ |
| 113 | target = TTM_PL_FLAG_TT; |
| 114 | if (nouveau_vram_pushbuf) |
| 115 | target = TTM_PL_FLAG_VRAM; |
| 116 | |
| 117 | ret = nouveau_bo_new(drm->dev, size, 0, target, 0, 0, NULL, |
| 118 | &chan->push.buffer); |
| 119 | if (ret == 0) { |
| 120 | ret = nouveau_bo_pin(chan->push.buffer, target); |
| 121 | if (ret == 0) |
| 122 | ret = nouveau_bo_map(chan->push.buffer); |
| 123 | } |
| 124 | |
| 125 | if (ret) { |
| 126 | nouveau_channel_del(pchan); |
| 127 | return ret; |
| 128 | } |
| 129 | |
| 130 | /* create dma object covering the *entire* memory space that the |
| 131 | * pushbuf lives in, this is because the GEM code requires that |
| 132 | * we be able to call out to other (indirect) push buffers |
| 133 | */ |
| 134 | chan->push.vma.offset = chan->push.buffer->bo.offset; |
| 135 | chan->push.handle = NVDRM_PUSH | (handle & 0xffff); |
| 136 | |
| 137 | if (device->card_type >= NV_50) { |
| 138 | ret = nouveau_bo_vma_add(chan->push.buffer, client->vm, |
| 139 | &chan->push.vma); |
| 140 | if (ret) { |
| 141 | nouveau_channel_del(pchan); |
| 142 | return ret; |
| 143 | } |
| 144 | |
| 145 | args.flags = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM; |
| 146 | args.start = 0; |
| 147 | args.limit = client->vm->vmm->limit - 1; |
| 148 | } else |
| 149 | if (chan->push.buffer->bo.mem.mem_type == TTM_PL_VRAM) { |
| 150 | u64 limit = pfb->ram.size - imem->reserved - 1; |
| 151 | if (device->card_type == NV_04) { |
| 152 | /* nv04 vram pushbuf hack, retarget to its location in |
| 153 | * the framebuffer bar rather than direct vram access.. |
| 154 | * nfi why this exists, it came from the -nv ddx. |
| 155 | */ |
| 156 | args.flags = NV_DMA_TARGET_PCI | NV_DMA_ACCESS_RDWR; |
| 157 | args.start = pci_resource_start(device->pdev, 1); |
| 158 | args.limit = args.start + limit; |
| 159 | } else { |
| 160 | args.flags = NV_DMA_TARGET_VRAM | NV_DMA_ACCESS_RDWR; |
| 161 | args.start = 0; |
| 162 | args.limit = limit; |
| 163 | } |
| 164 | } else { |
| 165 | if (chan->drm->agp.stat == ENABLED) { |
| 166 | args.flags = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR; |
| 167 | args.start = chan->drm->agp.base; |
| 168 | args.limit = chan->drm->agp.base + |
| 169 | chan->drm->agp.size - 1; |
| 170 | } else { |
| 171 | args.flags = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR; |
| 172 | args.start = 0; |
| 173 | args.limit = vmm->limit - 1; |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | ret = nouveau_object_new(nv_object(chan->cli), parent, |
| 178 | chan->push.handle, 0x0002, |
| 179 | &args, sizeof(args), &push); |
| 180 | if (ret) { |
| 181 | nouveau_channel_del(pchan); |
| 182 | return ret; |
| 183 | } |
| 184 | |
| 185 | return 0; |
| 186 | } |
| 187 | |
Marcin Slusarz | 5b8a43a | 2012-08-19 23:00:00 +0200 | [diff] [blame] | 188 | static int |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 189 | nouveau_channel_ind(struct nouveau_drm *drm, struct nouveau_cli *cli, |
Ben Skeggs | 4998104 | 2012-08-06 19:38:25 +1000 | [diff] [blame] | 190 | u32 parent, u32 handle, u32 engine, |
| 191 | struct nouveau_channel **pchan) |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 192 | { |
Ben Skeggs | c97f8c9 | 2012-08-19 16:03:00 +1000 | [diff] [blame] | 193 | static const u16 oclasses[] = { NVE0_CHANNEL_IND_CLASS, |
| 194 | NVC0_CHANNEL_IND_CLASS, |
| 195 | NV84_CHANNEL_IND_CLASS, |
| 196 | NV50_CHANNEL_IND_CLASS, |
| 197 | 0 }; |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 198 | const u16 *oclass = oclasses; |
Ben Skeggs | dbff2de | 2012-08-06 18:16:37 +1000 | [diff] [blame] | 199 | struct nve0_channel_ind_class args; |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 200 | struct nouveau_channel *chan; |
| 201 | int ret; |
| 202 | |
| 203 | /* allocate dma push buffer */ |
| 204 | ret = nouveau_channel_prep(drm, cli, parent, handle, 0x12000, &chan); |
| 205 | *pchan = chan; |
| 206 | if (ret) |
| 207 | return ret; |
| 208 | |
| 209 | /* create channel object */ |
| 210 | args.pushbuf = chan->push.handle; |
| 211 | args.ioffset = 0x10000 + chan->push.vma.offset; |
| 212 | args.ilength = 0x02000; |
Ben Skeggs | 4998104 | 2012-08-06 19:38:25 +1000 | [diff] [blame] | 213 | args.engine = engine; |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 214 | |
| 215 | do { |
| 216 | ret = nouveau_object_new(nv_object(cli), parent, handle, |
| 217 | *oclass++, &args, sizeof(args), |
| 218 | &chan->object); |
| 219 | if (ret == 0) |
| 220 | return ret; |
| 221 | } while (*oclass); |
| 222 | |
| 223 | nouveau_channel_del(pchan); |
| 224 | return ret; |
| 225 | } |
| 226 | |
| 227 | static int |
| 228 | nouveau_channel_dma(struct nouveau_drm *drm, struct nouveau_cli *cli, |
| 229 | u32 parent, u32 handle, struct nouveau_channel **pchan) |
| 230 | { |
Ben Skeggs | c97f8c9 | 2012-08-19 16:03:00 +1000 | [diff] [blame] | 231 | static const u16 oclasses[] = { NV40_CHANNEL_DMA_CLASS, |
| 232 | NV17_CHANNEL_DMA_CLASS, |
| 233 | NV10_CHANNEL_DMA_CLASS, |
| 234 | NV03_CHANNEL_DMA_CLASS, |
| 235 | 0 }; |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 236 | const u16 *oclass = oclasses; |
Ben Skeggs | a7c6e75 | 2012-08-14 15:02:29 +1000 | [diff] [blame] | 237 | struct nv03_channel_dma_class args; |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 238 | struct nouveau_channel *chan; |
| 239 | int ret; |
| 240 | |
| 241 | /* allocate dma push buffer */ |
| 242 | ret = nouveau_channel_prep(drm, cli, parent, handle, 0x10000, &chan); |
| 243 | *pchan = chan; |
| 244 | if (ret) |
| 245 | return ret; |
| 246 | |
| 247 | /* create channel object */ |
| 248 | args.pushbuf = chan->push.handle; |
| 249 | args.offset = chan->push.vma.offset; |
| 250 | |
| 251 | do { |
| 252 | ret = nouveau_object_new(nv_object(cli), parent, handle, |
| 253 | *oclass++, &args, sizeof(args), |
| 254 | &chan->object); |
| 255 | if (ret == 0) |
| 256 | return ret; |
| 257 | } while (ret && *oclass); |
| 258 | |
| 259 | nouveau_channel_del(pchan); |
| 260 | return ret; |
| 261 | } |
| 262 | |
| 263 | static int |
| 264 | nouveau_channel_init(struct nouveau_channel *chan, u32 vram, u32 gart) |
| 265 | { |
| 266 | struct nouveau_client *client = nv_client(chan->cli); |
| 267 | struct nouveau_device *device = nv_device(chan->drm->device); |
| 268 | struct nouveau_instmem *imem = nouveau_instmem(device); |
| 269 | struct nouveau_vmmgr *vmm = nouveau_vmmgr(device); |
| 270 | struct nouveau_fb *pfb = nouveau_fb(device); |
| 271 | struct nouveau_software_chan *swch; |
| 272 | struct nouveau_object *object; |
Ben Skeggs | f756944 | 2012-10-08 14:29:16 +1000 | [diff] [blame] | 273 | struct nv_dma_class args = {}; |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 274 | int ret, i; |
| 275 | |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 276 | /* allocate dma objects to cover all allowed vram, and gart */ |
| 277 | if (device->card_type < NV_C0) { |
| 278 | if (device->card_type >= NV_50) { |
| 279 | args.flags = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM; |
| 280 | args.start = 0; |
| 281 | args.limit = client->vm->vmm->limit - 1; |
| 282 | } else { |
| 283 | args.flags = NV_DMA_TARGET_VRAM | NV_DMA_ACCESS_RDWR; |
| 284 | args.start = 0; |
| 285 | args.limit = pfb->ram.size - imem->reserved - 1; |
| 286 | } |
| 287 | |
| 288 | ret = nouveau_object_new(nv_object(client), chan->handle, vram, |
| 289 | 0x003d, &args, sizeof(args), &object); |
| 290 | if (ret) |
| 291 | return ret; |
| 292 | |
| 293 | if (device->card_type >= NV_50) { |
| 294 | args.flags = NV_DMA_TARGET_VM | NV_DMA_ACCESS_VM; |
| 295 | args.start = 0; |
| 296 | args.limit = client->vm->vmm->limit - 1; |
| 297 | } else |
| 298 | if (chan->drm->agp.stat == ENABLED) { |
| 299 | args.flags = NV_DMA_TARGET_AGP | NV_DMA_ACCESS_RDWR; |
| 300 | args.start = chan->drm->agp.base; |
| 301 | args.limit = chan->drm->agp.base + |
| 302 | chan->drm->agp.size - 1; |
| 303 | } else { |
| 304 | args.flags = NV_DMA_TARGET_VM | NV_DMA_ACCESS_RDWR; |
| 305 | args.start = 0; |
| 306 | args.limit = vmm->limit - 1; |
| 307 | } |
| 308 | |
| 309 | ret = nouveau_object_new(nv_object(client), chan->handle, gart, |
| 310 | 0x003d, &args, sizeof(args), &object); |
| 311 | if (ret) |
| 312 | return ret; |
Ben Skeggs | 4998104 | 2012-08-06 19:38:25 +1000 | [diff] [blame] | 313 | |
| 314 | chan->vram = vram; |
| 315 | chan->gart = gart; |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | /* initialise dma tracking parameters */ |
Ben Skeggs | 503b0f1 | 2012-08-14 14:53:51 +1000 | [diff] [blame] | 319 | switch (nv_hclass(chan->object) & 0x00ff) { |
| 320 | case 0x006b: |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 321 | case 0x006e: |
| 322 | chan->user_put = 0x40; |
| 323 | chan->user_get = 0x44; |
| 324 | chan->dma.max = (0x10000 / 4) - 2; |
| 325 | break; |
| 326 | default: |
| 327 | chan->user_put = 0x40; |
| 328 | chan->user_get = 0x44; |
| 329 | chan->user_get_hi = 0x60; |
| 330 | chan->dma.ib_base = 0x10000 / 4; |
| 331 | chan->dma.ib_max = (0x02000 / 8) - 1; |
| 332 | chan->dma.ib_put = 0; |
| 333 | chan->dma.ib_free = chan->dma.ib_max - chan->dma.ib_put; |
| 334 | chan->dma.max = chan->dma.ib_base; |
| 335 | break; |
| 336 | } |
| 337 | |
| 338 | chan->dma.put = 0; |
| 339 | chan->dma.cur = chan->dma.put; |
| 340 | chan->dma.free = chan->dma.max - chan->dma.cur; |
| 341 | |
| 342 | ret = RING_SPACE(chan, NOUVEAU_DMA_SKIPS); |
| 343 | if (ret) |
| 344 | return ret; |
| 345 | |
| 346 | for (i = 0; i < NOUVEAU_DMA_SKIPS; i++) |
| 347 | OUT_RING(chan, 0x00000000); |
| 348 | |
| 349 | /* allocate software object class (used for fences on <= nv05, and |
| 350 | * to signal flip completion), bind it to a subchannel. |
| 351 | */ |
Ben Skeggs | 4946980 | 2012-11-22 13:43:55 +1000 | [diff] [blame] | 352 | if ((device->card_type < NV_E0) || gart /* nve0: want_nvsw */) { |
Ben Skeggs | 4998104 | 2012-08-06 19:38:25 +1000 | [diff] [blame] | 353 | ret = nouveau_object_new(nv_object(client), chan->handle, |
| 354 | NvSw, nouveau_abi16_swclass(chan->drm), |
| 355 | NULL, 0, &object); |
| 356 | if (ret) |
| 357 | return ret; |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 358 | |
Ben Skeggs | 4998104 | 2012-08-06 19:38:25 +1000 | [diff] [blame] | 359 | swch = (void *)object->parent; |
| 360 | swch->flip = nouveau_flip_complete; |
| 361 | swch->flip_data = chan; |
| 362 | } |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 363 | |
| 364 | if (device->card_type < NV_C0) { |
| 365 | ret = RING_SPACE(chan, 2); |
| 366 | if (ret) |
| 367 | return ret; |
| 368 | |
| 369 | BEGIN_NV04(chan, NvSubSw, 0x0000, 1); |
| 370 | OUT_RING (chan, NvSw); |
| 371 | FIRE_RING (chan); |
| 372 | } |
| 373 | |
| 374 | /* initialise synchronisation */ |
| 375 | return nouveau_fence(chan->drm)->context_new(chan); |
| 376 | } |
| 377 | |
| 378 | int |
| 379 | nouveau_channel_new(struct nouveau_drm *drm, struct nouveau_cli *cli, |
Ben Skeggs | 4998104 | 2012-08-06 19:38:25 +1000 | [diff] [blame] | 380 | u32 parent, u32 handle, u32 arg0, u32 arg1, |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 381 | struct nouveau_channel **pchan) |
| 382 | { |
| 383 | int ret; |
| 384 | |
Ben Skeggs | 4998104 | 2012-08-06 19:38:25 +1000 | [diff] [blame] | 385 | ret = nouveau_channel_ind(drm, cli, parent, handle, arg0, pchan); |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 386 | if (ret) { |
Ben Skeggs | da07e52 | 2012-09-12 13:40:47 +1000 | [diff] [blame] | 387 | NV_DEBUG(cli, "ib channel create, %d\n", ret); |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 388 | ret = nouveau_channel_dma(drm, cli, parent, handle, pchan); |
| 389 | if (ret) { |
Ben Skeggs | da07e52 | 2012-09-12 13:40:47 +1000 | [diff] [blame] | 390 | NV_DEBUG(cli, "dma channel create, %d\n", ret); |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 391 | return ret; |
| 392 | } |
| 393 | } |
| 394 | |
Ben Skeggs | 4998104 | 2012-08-06 19:38:25 +1000 | [diff] [blame] | 395 | ret = nouveau_channel_init(*pchan, arg0, arg1); |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 396 | if (ret) { |
Ben Skeggs | da07e52 | 2012-09-12 13:40:47 +1000 | [diff] [blame] | 397 | NV_ERROR(cli, "channel failed to initialise, %d\n", ret); |
Ben Skeggs | ebb945a | 2012-07-20 08:17:34 +1000 | [diff] [blame] | 398 | nouveau_channel_del(pchan); |
| 399 | return ret; |
| 400 | } |
| 401 | |
| 402 | return 0; |
| 403 | } |