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 "drmP.h"
  26
  27 #include "nouveau_drv.h"
  28 #include "nouveau_dma.h"
  29 #include "nouveau_ramht.h"
  30
  31 static void
  32 nv50_evo_channel_del(struct nouveau_channel **pevo)
  33 {
  34         struct drm_nouveau_private *dev_priv;
  35         struct nouveau_channel *evo = *pevo;
  36
  37         if (!evo)
  38                 return;
  39         *pevo = NULL;
  40
  41         dev_priv = evo->dev->dev_private;
  42         dev_priv->evo_alloc &= ~(1 << evo->id);
  43
  44         nouveau_gpuobj_channel_takedown(evo);
  45         nouveau_bo_unmap(evo->pushbuf_bo);
  46         nouveau_bo_ref(NULL, &evo->pushbuf_bo);
  47
  48         if (evo->user)
  49                 iounmap(evo->user);
  50
  51         kfree(evo);
  52 }
  53
  54 int
  55 nv50_evo_dmaobj_new(struct nouveau_channel *evo, u32 class, u32 name,
  56                     u32 tile_flags, u32 magic_flags, u32 offset, u32 limit,
  57                     u32 flags5)
  58 {
  59         struct drm_nouveau_private *dev_priv = evo->dev->dev_private;
  60         struct drm_device *dev = evo->dev;
  61         struct nouveau_gpuobj *obj = NULL;
  62         int ret;
  63
  64         ret = nouveau_gpuobj_new(dev, dev_priv->evo, 6*4, 32, 0, &obj);
  65         if (ret)
  66                 return ret;
  67         obj->engine = NVOBJ_ENGINE_DISPLAY;
  68
  69         nv_wo32(obj,  0, (tile_flags << 22) | (magic_flags << 16) | class);
  70         nv_wo32(obj,  4, limit);
  71         nv_wo32(obj,  8, offset);
  72         nv_wo32(obj, 12, 0x00000000);
  73         nv_wo32(obj, 16, 0x00000000);
  74         nv_wo32(obj, 20, flags5);
  75         dev_priv->engine.instmem.flush(dev);
  76
  77         ret = nouveau_ramht_insert(evo, name, obj);
  78         nouveau_gpuobj_ref(NULL, &obj);
  79         if (ret) {
  80                 return ret;
  81         }
  82
  83         return 0;
  84 }
  85
  86 static int
  87 nv50_evo_channel_new(struct drm_device *dev, struct nouveau_channel **pevo)
  88 {
  89         struct drm_nouveau_private *dev_priv = dev->dev_private;
  90         struct nouveau_channel *evo;
  91         int ret;
  92
  93         evo = kzalloc(sizeof(struct nouveau_channel), GFP_KERNEL);
  94         if (!evo)
  95                 return -ENOMEM;
  96         *pevo = evo;
  97
  98         for (evo->id = 0; evo->id < 5; evo->id++) {
  99                 if (dev_priv->evo_alloc & (1 << evo->id))
 100                         continue;
 101
 102                 dev_priv->evo_alloc |= (1 << evo->id);
 103                 break;
 104         }
 105
 106         if (evo->id == 5) {
 107                 kfree(evo);
 108                 return -ENODEV;
 109         }
 110
 111         evo->dev = dev;
 112         evo->user_get = 4;
 113         evo->user_put = 0;
 114
 115         ret = nouveau_bo_new(dev, NULL, 4096, 0, TTM_PL_FLAG_VRAM, 0, 0,
 116                              false, true, &evo->pushbuf_bo);
 117         if (ret == 0)
 118                 ret = nouveau_bo_pin(evo->pushbuf_bo, TTM_PL_FLAG_VRAM);
 119         if (ret) {
 120                 NV_ERROR(dev, "Error creating EVO DMA push buffer: %d\n", ret);
 121                 nv50_evo_channel_del(pevo);
 122                 return ret;
 123         }
 124
 125         ret = nouveau_bo_map(evo->pushbuf_bo);
 126         if (ret) {
 127                 NV_ERROR(dev, "Error mapping EVO DMA push buffer: %d\n", ret);
 128                 nv50_evo_channel_del(pevo);
 129                 return ret;
 130         }
 131
 132         evo->user = ioremap(pci_resource_start(dev->pdev, 0) +
 133                             NV50_PDISPLAY_USER(evo->id), PAGE_SIZE);
 134         if (!evo->user) {
 135                 NV_ERROR(dev, "Error mapping EVO control regs.\n");
 136                 nv50_evo_channel_del(pevo);
 137                 return -ENOMEM;
 138         }
 139
 140         /* bind primary evo channel's ramht to the channel */
 141         if (dev_priv->evo && evo != dev_priv->evo)
 142                 nouveau_ramht_ref(dev_priv->evo->ramht, &evo->ramht, NULL);
 143
 144         return 0;
 145 }
 146
 147 static int
 148 nv50_evo_channel_init(struct nouveau_channel *evo)
 149 {
 150         struct drm_device *dev = evo->dev;
 151         int id = evo->id, ret, i;
 152         u64 pushbuf = evo->pushbuf_bo->bo.mem.start << PAGE_SHIFT;
 153         u32 tmp;
 154
 155         tmp = nv_rd32(dev, NV50_PDISPLAY_EVO_CTRL(id));
 156         if ((tmp & 0x009f0000) == 0x00020000)
 157                 nv_wr32(dev, NV50_PDISPLAY_EVO_CTRL(id), tmp | 0x00800000);
 158
 159         tmp = nv_rd32(dev, NV50_PDISPLAY_EVO_CTRL(id));
 160         if ((tmp & 0x003f0000) == 0x00030000)
 161                 nv_wr32(dev, NV50_PDISPLAY_EVO_CTRL(id), tmp | 0x00600000);
 162
 163         /* initialise fifo */
 164         nv_wr32(dev, NV50_PDISPLAY_EVO_DMA_CB(id), pushbuf >> 8 |
 165                      NV50_PDISPLAY_EVO_DMA_CB_LOCATION_VRAM |
 166                      NV50_PDISPLAY_EVO_DMA_CB_VALID);
 167         nv_wr32(dev, NV50_PDISPLAY_EVO_UNK2(id), 0x00010000);
 168         nv_wr32(dev, NV50_PDISPLAY_EVO_HASH_TAG(id), id);
 169         nv_mask(dev, NV50_PDISPLAY_EVO_CTRL(id), NV50_PDISPLAY_EVO_CTRL_DMA,
 170                      NV50_PDISPLAY_EVO_CTRL_DMA_ENABLED);
 171
 172         nv_wr32(dev, NV50_PDISPLAY_USER_PUT(id), 0x00000000);
 173         nv_wr32(dev, NV50_PDISPLAY_EVO_CTRL(id), 0x01000003 |
 174                      NV50_PDISPLAY_EVO_CTRL_DMA_ENABLED);
 175         if (!nv_wait(dev, NV50_PDISPLAY_EVO_CTRL(id), 0x80000000, 0x00000000)) {
 176                 NV_ERROR(dev, "EvoCh %d init timeout: 0x%08x\n", id,
 177                          nv_rd32(dev, NV50_PDISPLAY_EVO_CTRL(id)));
 178                 return -EBUSY;
 179         }
 180
 181         /* enable error reporting on the channel */
 182         nv_mask(dev, 0x610028, 0x00000000, 0x00010001 << id);
 183
 184         evo->dma.max = (4096/4) - 2;
 185         evo->dma.put = 0;
 186         evo->dma.cur = evo->dma.put;
 187         evo->dma.free = evo->dma.max - evo->dma.cur;
 188
 189         ret = RING_SPACE(evo, NOUVEAU_DMA_SKIPS);
 190         if (ret)
 191                 return ret;
 192
 193         for (i = 0; i < NOUVEAU_DMA_SKIPS; i++)
 194                 OUT_RING(evo, 0);
 195
 196         return 0;
 197 }
 198
 199 static void
 200 nv50_evo_channel_fini(struct nouveau_channel *evo)
 201 {
 202         struct drm_device *dev = evo->dev;
 203         int id = evo->id;
 204
 205         nv_mask(dev, 0x610028, 0x00010001 << id, 0x00000000);
 206         nv_mask(dev, NV50_PDISPLAY_EVO_CTRL(id), 0x00001010, 0x00001000);
 207         nv_wr32(dev, NV50_PDISPLAY_INTR_0, (1 << id));
 208         nv_mask(dev, NV50_PDISPLAY_EVO_CTRL(id), 0x00000003, 0x00000000);
 209         if (!nv_wait(dev, NV50_PDISPLAY_EVO_CTRL(id), 0x001e0000, 0x00000000)) {
 210                 NV_ERROR(dev, "EvoCh %d takedown timeout: 0x%08x\n", id,
 211                          nv_rd32(dev, NV50_PDISPLAY_EVO_CTRL(id)));
 212         }
 213 }
 214
 215 static int
 216 nv50_evo_create(struct drm_device *dev)
 217 {
 218         struct drm_nouveau_private *dev_priv = dev->dev_private;
 219         struct nouveau_gpuobj *ramht = NULL;
 220         struct nouveau_channel *evo;
 221         int ret;
 222
 223         /* create primary evo channel, the one we use for modesetting
 224          * purporses
 225          */
 226         ret = nv50_evo_channel_new(dev, &dev_priv->evo);
 227         if (ret)
 228                 return ret;
 229         evo = dev_priv->evo;
 230
 231         /* setup object management on it, any other evo channel will
 232          * use this also as there's no per-channel support on the
 233          * hardware
 234          */
 235         ret = nouveau_gpuobj_new(dev, NULL, 32768, 65536,
 236                                  NVOBJ_FLAG_ZERO_ALLOC, &evo->ramin);
 237         if (ret) {
 238                 NV_ERROR(dev, "Error allocating EVO channel memory: %d\n", ret);
 239                 nv50_evo_channel_del(&dev_priv->evo);
 240                 return ret;
 241         }
 242
 243         ret = drm_mm_init(&evo->ramin_heap, 0, 32768);
 244         if (ret) {
 245                 NV_ERROR(dev, "Error initialising EVO PRAMIN heap: %d\n", ret);
 246                 nv50_evo_channel_del(&dev_priv->evo);
 247                 return ret;
 248         }
 249
 250         ret = nouveau_gpuobj_new(dev, evo, 4096, 16, 0, &ramht);
 251         if (ret) {
 252                 NV_ERROR(dev, "Unable to allocate EVO RAMHT: %d\n", ret);
 253                 nv50_evo_channel_del(&dev_priv->evo);
 254                 return ret;
 255         }
 256
 257         ret = nouveau_ramht_new(dev, ramht, &evo->ramht);
 258         nouveau_gpuobj_ref(NULL, &ramht);
 259         if (ret) {
 260                 nv50_evo_channel_del(&dev_priv->evo);
 261                 return ret;
 262         }
 263
 264         /* create some default objects for the scanout memtypes we support */
 265         if (dev_priv->card_type >= NV_C0) {
 266                 ret = nv50_evo_dmaobj_new(evo, 0x3d, NvEvoFB32, 0xfe, 0x19,
 267                                           0, 0xffffffff, 0x00000000);
 268                 if (ret) {
 269                         nv50_evo_channel_del(&dev_priv->evo);
 270                         return ret;
 271                 }
 272
 273                 ret = nv50_evo_dmaobj_new(evo, 0x3d, NvEvoVRAM, 0, 0x19,
 274                                           0, dev_priv->vram_size, 0x00020000);
 275                 if (ret) {
 276                         nv50_evo_channel_del(&dev_priv->evo);
 277                         return ret;
 278                 }
 279
 280                 ret = nv50_evo_dmaobj_new(evo, 0x3d, NvEvoVRAM_LP, 0, 0x19,
 281                                           0, dev_priv->vram_size, 0x00000000);
 282                 if (ret) {
 283                         nv50_evo_channel_del(&dev_priv->evo);
 284                         return ret;
 285                 }
 286         } else {
 287                 ret = nv50_evo_dmaobj_new(evo, 0x3d, NvEvoFB16, 0x70, 0x19,
 288                                           0, 0xffffffff, 0x00010000);
 289                 if (ret) {
 290                         nv50_evo_channel_del(&dev_priv->evo);
 291                         return ret;
 292                 }
 293
 294
 295                 ret = nv50_evo_dmaobj_new(evo, 0x3d, NvEvoFB32, 0x7a, 0x19,
 296                                           0, 0xffffffff, 0x00010000);
 297                 if (ret) {
 298                         nv50_evo_channel_del(&dev_priv->evo);
 299                         return ret;
 300                 }
 301
 302                 ret = nv50_evo_dmaobj_new(evo, 0x3d, NvEvoVRAM, 0, 0x19,
 303                                           0, dev_priv->vram_size, 0x00010000);
 304                 if (ret) {
 305                         nv50_evo_channel_del(&dev_priv->evo);
 306                         return ret;
 307                 }
 308
 309                 ret = nv50_evo_dmaobj_new(evo, 0x3d, NvEvoVRAM_LP, 0, 0x19,
 310                                           0, dev_priv->vram_size, 0x00010000);
 311                 if (ret) {
 312                         nv50_evo_channel_del(&dev_priv->evo);
 313                         return ret;
 314                 }
 315         }
 316
 317         return 0;
 318 }
 319
 320 int
 321 nv50_evo_init(struct drm_device *dev)
 322 {
 323         struct drm_nouveau_private *dev_priv = dev->dev_private;
 324         int ret;
 325
 326         if (!dev_priv->evo) {
 327                 ret = nv50_evo_create(dev);
 328                 if (ret)
 329                         return ret;
 330         }
 331
 332         return nv50_evo_channel_init(dev_priv->evo);
 333 }
 334
 335 void
 336 nv50_evo_fini(struct drm_device *dev)
 337 {
 338         struct drm_nouveau_private *dev_priv = dev->dev_private;
 339
 340         if (dev_priv->evo) {
 341                 nv50_evo_channel_fini(dev_priv->evo);
 342                 nv50_evo_channel_del(&dev_priv->evo);
 343         }
 344 }