drivers/gpu/drm/nouveau/nv50_evo.c

   1 /*
   2  * Copyright 2010 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 <drm/drmP.h>
  26
  27 #include "nouveau_drv.h"
  28 #include "nouveau_dma.h"
  29 #include "nouveau_ramht.h"
  30 #include "nv50_display.h"
  31
  32 static void
  33 nv50_evo_channel_del(struct nouveau_channel **pevo)
  34 {
  35         struct nouveau_channel *evo = *pevo;
  36
  37         if (!evo)
  38                 return;
  39         *pevo = NULL;
  40
  41         nouveau_ramht_ref(NULL, &evo->ramht, evo);
  42         nouveau_gpuobj_channel_takedown(evo);
  43         nouveau_bo_unmap(evo->pushbuf_bo);
  44         nouveau_bo_ref(NULL, &evo->pushbuf_bo);
  45
  46         if (evo->user)
  47                 iounmap(evo->user);
  48
  49         kfree(evo);
  50 }
  51
  52 void
  53 nv50_evo_dmaobj_init(struct nouveau_gpuobj *obj, u32 memtype, u64 base, u64 size)
  54 {
  55         struct drm_nouveau_private *dev_priv = obj->dev->dev_private;
  56         u32 flags5;
  57
  58         if (dev_priv->chipset < 0xc0) {
  59                 /* not supported on 0x50, specified in format mthd */
  60                 if (dev_priv->chipset == 0x50)
  61                         memtype = 0;
  62                 flags5 = 0x00010000;
  63         } else {
  64                 if (memtype & 0x80000000)
  65                         flags5 = 0x00000000; /* large pages */
  66                 else
  67                         flags5 = 0x00020000;
  68         }
  69
  70         nv50_gpuobj_dma_init(obj, 0, 0x3d, base, size, NV_MEM_TARGET_VRAM,
  71                              NV_MEM_ACCESS_RW, (memtype >> 8) & 0xff, 0);
  72         nv_wo32(obj, 0x14, flags5);
  73         dev_priv->engine.instmem.flush(obj->dev);
  74 }
  75
  76 int
  77 nv50_evo_dmaobj_new(struct nouveau_channel *evo, u32 handle, u32 memtype,
  78                     u64 base, u64 size, struct nouveau_gpuobj **pobj)
  79 {
  80         struct nv50_display *disp = nv50_display(evo->dev);
  81         struct nouveau_gpuobj *obj = NULL;
  82         int ret;
  83
  84         ret = nouveau_gpuobj_new(evo->dev, disp->master, 6*4, 32, 0, &obj);
  85         if (ret)
  86                 return ret;
  87         obj->engine = NVOBJ_ENGINE_DISPLAY;
  88
  89         nv50_evo_dmaobj_init(obj, memtype, base, size);
  90
  91         ret = nouveau_ramht_insert(evo, handle, obj);
  92         if (ret)
  93                 goto out;
  94
  95         if (pobj)
  96                 nouveau_gpuobj_ref(obj, pobj);
  97 out:
  98         nouveau_gpuobj_ref(NULL, &obj);
  99         return ret;
 100 }
 101
 102 static int
 103 nv50_evo_channel_new(struct drm_device *dev, int chid,
 104                      struct nouveau_channel **pevo)
 105 {
 106         struct nv50_display *disp = nv50_display(dev);
 107         struct nouveau_channel *evo;
 108         int ret;
 109
 110         evo = kzalloc(sizeof(struct nouveau_channel), GFP_KERNEL);
 111         if (!evo)
 112                 return -ENOMEM;
 113         *pevo = evo;
 114
 115         evo->id = chid;
 116         evo->dev = dev;
 117         evo->user_get = 4;
 118         evo->user_put = 0;
 119
 120         ret = nouveau_bo_new(dev, 4096, 0, TTM_PL_FLAG_VRAM, 0, 0, NULL,
 121                              &evo->pushbuf_bo);
 122         if (ret == 0)
 123                 ret = nouveau_bo_pin(evo->pushbuf_bo, TTM_PL_FLAG_VRAM);
 124         if (ret) {
 125                 NV_ERROR(dev, "Error creating EVO DMA push buffer: %d\n", ret);
 126                 nv50_evo_channel_del(pevo);
 127                 return ret;
 128         }
 129
 130         ret = nouveau_bo_map(evo->pushbuf_bo);
 131         if (ret) {
 132                 NV_ERROR(dev, "Error mapping EVO DMA push buffer: %d\n", ret);
 133                 nv50_evo_channel_del(pevo);
 134                 return ret;
 135         }
 136
 137         evo->user = ioremap(pci_resource_start(dev->pdev, 0) +
 138                             NV50_PDISPLAY_USER(evo->id), PAGE_SIZE);
 139         if (!evo->user) {
 140                 NV_ERROR(dev, "Error mapping EVO control regs.\n");
 141                 nv50_evo_channel_del(pevo);
 142                 return -ENOMEM;
 143         }
 144
 145         /* bind primary evo channel's ramht to the channel */
 146         if (disp->master && evo != disp->master)
 147                 nouveau_ramht_ref(disp->master->ramht, &evo->ramht, NULL);
 148
 149         return 0;
 150 }
 151
 152 static int
 153 nv50_evo_channel_init(struct nouveau_channel *evo)
 154 {
 155         struct drm_device *dev = evo->dev;
 156         int id = evo->id, ret, i;
 157         u64 pushbuf = evo->pushbuf_bo->bo.offset;
 158         u32 tmp;
 159
 160         tmp = nv_rd32(dev, NV50_PDISPLAY_EVO_CTRL(id));
 161         if ((tmp & 0x009f0000) == 0x00020000)
 162                 nv_wr32(dev, NV50_PDISPLAY_EVO_CTRL(id), tmp | 0x00800000);
 163
 164         tmp = nv_rd32(dev, NV50_PDISPLAY_EVO_CTRL(id));
 165         if ((tmp & 0x003f0000) == 0x00030000)
 166                 nv_wr32(dev, NV50_PDISPLAY_EVO_CTRL(id), tmp | 0x00600000);
 167
 168         /* initialise fifo */
 169         nv_wr32(dev, NV50_PDISPLAY_EVO_DMA_CB(id), pushbuf >> 8 |
 170                      NV50_PDISPLAY_EVO_DMA_CB_LOCATION_VRAM |
 171                      NV50_PDISPLAY_EVO_DMA_CB_VALID);
 172         nv_wr32(dev, NV50_PDISPLAY_EVO_UNK2(id), 0x00010000);
 173         nv_wr32(dev, NV50_PDISPLAY_EVO_HASH_TAG(id), id);
 174         nv_mask(dev, NV50_PDISPLAY_EVO_CTRL(id), NV50_PDISPLAY_EVO_CTRL_DMA,
 175                      NV50_PDISPLAY_EVO_CTRL_DMA_ENABLED);
 176
 177         nv_wr32(dev, NV50_PDISPLAY_USER_PUT(id), 0x00000000);
 178         nv_wr32(dev, NV50_PDISPLAY_EVO_CTRL(id), 0x01000003 |
 179                      NV50_PDISPLAY_EVO_CTRL_DMA_ENABLED);
 180         if (!nv_wait(dev, NV50_PDISPLAY_EVO_CTRL(id), 0x80000000, 0x00000000)) {
 181                 NV_ERROR(dev, "EvoCh %d init timeout: 0x%08x\n", id,
 182                          nv_rd32(dev, NV50_PDISPLAY_EVO_CTRL(id)));
 183                 return -EBUSY;
 184         }
 185
 186         /* enable error reporting on the channel */
 187         nv_mask(dev, 0x610028, 0x00000000, 0x00010001 << id);
 188
 189         evo->dma.max = (4096/4) - 2;
 190         evo->dma.max &= ~7;
 191         evo->dma.put = 0;
 192         evo->dma.cur = evo->dma.put;
 193         evo->dma.free = evo->dma.max - evo->dma.cur;
 194
 195         ret = RING_SPACE(evo, NOUVEAU_DMA_SKIPS);
 196         if (ret)
 197                 return ret;
 198
 199         for (i = 0; i < NOUVEAU_DMA_SKIPS; i++)
 200                 OUT_RING(evo, 0);
 201
 202         return 0;
 203 }
 204
 205 static void
 206 nv50_evo_channel_fini(struct nouveau_channel *evo)
 207 {
 208         struct drm_device *dev = evo->dev;
 209         int id = evo->id;
 210
 211         nv_mask(dev, 0x610028, 0x00010001 << id, 0x00000000);
 212         nv_mask(dev, NV50_PDISPLAY_EVO_CTRL(id), 0x00001010, 0x00001000);
 213         nv_wr32(dev, NV50_PDISPLAY_INTR_0, (1 << id));
 214         nv_mask(dev, NV50_PDISPLAY_EVO_CTRL(id), 0x00000003, 0x00000000);
 215         if (!nv_wait(dev, NV50_PDISPLAY_EVO_CTRL(id), 0x001e0000, 0x00000000)) {
 216                 NV_ERROR(dev, "EvoCh %d takedown timeout: 0x%08x\n", id,
 217                          nv_rd32(dev, NV50_PDISPLAY_EVO_CTRL(id)));
 218         }
 219 }
 220
 221 void
 222 nv50_evo_destroy(struct drm_device *dev)
 223 {
 224         struct nv50_display *disp = nv50_display(dev);
 225         int i;
 226
 227         for (i = 0; i < 2; i++) {
 228                 if (disp->crtc[i].sem.bo) {
 229                         nouveau_bo_unmap(disp->crtc[i].sem.bo);
 230                         nouveau_bo_ref(NULL, &disp->crtc[i].sem.bo);
 231                 }
 232                 nv50_evo_channel_del(&disp->crtc[i].sync);
 233         }
 234         nouveau_gpuobj_ref(NULL, &disp->ntfy);
 235         nv50_evo_channel_del(&disp->master);
 236 }
 237
 238 int
 239 nv50_evo_create(struct drm_device *dev)
 240 {
 241         struct drm_nouveau_private *dev_priv = dev->dev_private;
 242         struct nv50_display *disp = nv50_display(dev);
 243         struct nouveau_gpuobj *ramht = NULL;
 244         struct nouveau_channel *evo;
 245         int ret, i, j;
 246
 247         /* create primary evo channel, the one we use for modesetting
 248          * purporses
 249          */
 250         ret = nv50_evo_channel_new(dev, 0, &disp->master);
 251         if (ret)
 252                 return ret;
 253         evo = disp->master;
 254
 255         /* setup object management on it, any other evo channel will
 256          * use this also as there's no per-channel support on the
 257          * hardware
 258          */
 259         ret = nouveau_gpuobj_new(dev, NULL, 32768, 65536,
 260                                  NVOBJ_FLAG_ZERO_ALLOC, &evo->ramin);
 261         if (ret) {
 262                 NV_ERROR(dev, "Error allocating EVO channel memory: %d\n", ret);
 263                 goto err;
 264         }
 265
 266         ret = drm_mm_init(&evo->ramin_heap, 0, 32768);
 267         if (ret) {
 268                 NV_ERROR(dev, "Error initialising EVO PRAMIN heap: %d\n", ret);
 269                 goto err;
 270         }
 271
 272         ret = nouveau_gpuobj_new(dev, evo, 4096, 16, 0, &ramht);
 273         if (ret) {
 274                 NV_ERROR(dev, "Unable to allocate EVO RAMHT: %d\n", ret);
 275                 goto err;
 276         }
 277
 278         ret = nouveau_ramht_new(dev, ramht, &evo->ramht);
 279         nouveau_gpuobj_ref(NULL, &ramht);
 280         if (ret)
 281                 goto err;
 282
 283         /* not sure exactly what this is..
 284          *
 285          * the first dword of the structure is used by nvidia to wait on
 286          * full completion of an EVO "update" command.
 287          *
 288          * method 0x8c on the master evo channel will fill a lot more of
 289          * this structure with some undefined info
 290          */
 291         ret = nouveau_gpuobj_new(dev, disp->master, 0x1000, 0,
 292                                  NVOBJ_FLAG_ZERO_ALLOC, &disp->ntfy);
 293         if (ret)
 294                 goto err;
 295
 296         ret = nv50_evo_dmaobj_new(disp->master, NvEvoSync, 0x0000,
 297                                   disp->ntfy->vinst, disp->ntfy->size, NULL);
 298         if (ret)
 299                 goto err;
 300
 301         /* create some default objects for the scanout memtypes we support */
 302         ret = nv50_evo_dmaobj_new(disp->master, NvEvoVRAM, 0x0000,
 303                                   0, dev_priv->vram_size, NULL);
 304         if (ret)
 305                 goto err;
 306
 307         ret = nv50_evo_dmaobj_new(disp->master, NvEvoVRAM_LP, 0x80000000,
 308                                   0, dev_priv->vram_size, NULL);
 309         if (ret)
 310                 goto err;
 311
 312         ret = nv50_evo_dmaobj_new(disp->master, NvEvoFB32, 0x80000000 |
 313                                   (dev_priv->chipset < 0xc0 ? 0x7a00 : 0xfe00),
 314                                   0, dev_priv->vram_size, NULL);
 315         if (ret)
 316                 goto err;
 317
 318         ret = nv50_evo_dmaobj_new(disp->master, NvEvoFB16, 0x80000000 |
 319                                   (dev_priv->chipset < 0xc0 ? 0x7000 : 0xfe00),
 320                                   0, dev_priv->vram_size, NULL);
 321         if (ret)
 322                 goto err;
 323
 324         /* create "display sync" channels and other structures we need
 325          * to implement page flipping
 326          */
 327         for (i = 0; i < 2; i++) {
 328                 struct nv50_display_crtc *dispc = &disp->crtc[i];
 329                 u64 offset;
 330
 331                 ret = nv50_evo_channel_new(dev, 1 + i, &dispc->sync);
 332                 if (ret)
 333                         goto err;
 334
 335                 ret = nouveau_bo_new(dev, 4096, 0x1000, TTM_PL_FLAG_VRAM,
 336                                      0, 0x0000, NULL, &dispc->sem.bo);
 337                 if (!ret) {
 338                         ret = nouveau_bo_pin(dispc->sem.bo, TTM_PL_FLAG_VRAM);
 339                         if (!ret)
 340                                 ret = nouveau_bo_map(dispc->sem.bo);
 341                         if (ret)
 342                                 nouveau_bo_ref(NULL, &dispc->sem.bo);
 343                         offset = dispc->sem.bo->bo.offset;
 344                 }
 345
 346                 if (ret)
 347                         goto err;
 348
 349                 ret = nv50_evo_dmaobj_new(dispc->sync, NvEvoSync, 0x0000,
 350                                           offset, 4096, NULL);
 351                 if (ret)
 352                         goto err;
 353
 354                 ret = nv50_evo_dmaobj_new(dispc->sync, NvEvoVRAM_LP, 0x80000000,
 355                                           0, dev_priv->vram_size, NULL);
 356                 if (ret)
 357                         goto err;
 358
 359                 ret = nv50_evo_dmaobj_new(dispc->sync, NvEvoFB32, 0x80000000 |
 360                                           (dev_priv->chipset < 0xc0 ?
 361                                           0x7a00 : 0xfe00),
 362                                           0, dev_priv->vram_size, NULL);
 363                 if (ret)
 364                         goto err;
 365
 366                 ret = nv50_evo_dmaobj_new(dispc->sync, NvEvoFB16, 0x80000000 |
 367                                           (dev_priv->chipset < 0xc0 ?
 368                                           0x7000 : 0xfe00),
 369                                           0, dev_priv->vram_size, NULL);
 370                 if (ret)
 371                         goto err;
 372
 373                 for (j = 0; j < 4096; j += 4)
 374                         nouveau_bo_wr32(dispc->sem.bo, j / 4, 0x74b1e000);
 375                 dispc->sem.offset = 0;
 376         }
 377
 378         return 0;
 379
 380 err:
 381         nv50_evo_destroy(dev);
 382         return ret;
 383 }
 384
 385 int
 386 nv50_evo_init(struct drm_device *dev)
 387 {
 388         struct nv50_display *disp = nv50_display(dev);
 389         int ret, i;
 390
 391         ret = nv50_evo_channel_init(disp->master);
 392         if (ret)
 393                 return ret;
 394
 395         for (i = 0; i < 2; i++) {
 396                 ret = nv50_evo_channel_init(disp->crtc[i].sync);
 397                 if (ret)
 398                         return ret;
 399         }
 400
 401         return 0;
 402 }
 403
 404 void
 405 nv50_evo_fini(struct drm_device *dev)
 406 {
 407         struct nv50_display *disp = nv50_display(dev);
 408         int i;
 409
 410         for (i = 0; i < 2; i++) {
 411                 if (disp->crtc[i].sync)
 412                         nv50_evo_channel_fini(disp->crtc[i].sync);
 413         }
 414
 415         if (disp->master)
 416                 nv50_evo_channel_fini(disp->master);
 417 }