drivers/gpu/drm/nouveau/nv84_fence.c

   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/class.h>
  28
  29 #include <engine/fifo.h>
  30
  31 #include "nouveau_drm.h"
  32 #include "nouveau_dma.h"
  33 #include "nouveau_fence.h"
  34
  35 #include "nv50_display.h"
  36
  37 u64
  38 nv84_fence_crtc(struct nouveau_channel *chan, int crtc)
  39 {
  40         struct nv84_fence_chan *fctx = chan->fence;
  41         return fctx->dispc_vma[crtc].offset;
  42 }
  43
  44 static int
  45 nv84_fence_emit32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
  46 {
  47         int ret = RING_SPACE(chan, 8);
  48         if (ret == 0) {
  49                 BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 1);
  50                 OUT_RING  (chan, chan->vram);
  51                 BEGIN_NV04(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 5);
  52                 OUT_RING  (chan, upper_32_bits(virtual));
  53                 OUT_RING  (chan, lower_32_bits(virtual));
  54                 OUT_RING  (chan, sequence);
  55                 OUT_RING  (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG);
  56                 OUT_RING  (chan, 0x00000000);
  57                 FIRE_RING (chan);
  58         }
  59         return ret;
  60 }
  61
  62 static int
  63 nv84_fence_sync32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
  64 {
  65         int ret = RING_SPACE(chan, 7);
  66         if (ret == 0) {
  67                 BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 1);
  68                 OUT_RING  (chan, chan->vram);
  69                 BEGIN_NV04(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4);
  70                 OUT_RING  (chan, upper_32_bits(virtual));
  71                 OUT_RING  (chan, lower_32_bits(virtual));
  72                 OUT_RING  (chan, sequence);
  73                 OUT_RING  (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_GEQUAL);
  74                 FIRE_RING (chan);
  75         }
  76         return ret;
  77 }
  78
  79 static int
  80 nv84_fence_emit(struct nouveau_fence *fence)
  81 {
  82         struct nouveau_channel *chan = fence->channel;
  83         struct nv84_fence_chan *fctx = chan->fence;
  84         struct nouveau_fifo_chan *fifo = (void *)chan->object;
  85         u64 addr = fifo->chid * 16;
  86
  87         if (fence->sysmem)
  88                 addr += fctx->vma_gart.offset;
  89         else
  90                 addr += fctx->vma.offset;
  91
  92         return fctx->base.emit32(chan, addr, fence->sequence);
  93 }
  94
  95 static int
  96 nv84_fence_sync(struct nouveau_fence *fence,
  97                 struct nouveau_channel *prev, struct nouveau_channel *chan)
  98 {
  99         struct nv84_fence_chan *fctx = chan->fence;
 100         struct nouveau_fifo_chan *fifo = (void *)prev->object;
 101         u64 addr = fifo->chid * 16;
 102
 103         if (fence->sysmem)
 104                 addr += fctx->vma_gart.offset;
 105         else
 106                 addr += fctx->vma.offset;
 107
 108         return fctx->base.sync32(chan, addr, fence->sequence);
 109 }
 110
 111 static u32
 112 nv84_fence_read(struct nouveau_channel *chan)
 113 {
 114         struct nouveau_fifo_chan *fifo = (void *)chan->object;
 115         struct nv84_fence_priv *priv = chan->drm->fence;
 116         return nouveau_bo_rd32(priv->bo, fifo->chid * 16/4);
 117 }
 118
 119 static void
 120 nv84_fence_context_del(struct nouveau_channel *chan)
 121 {
 122         struct drm_device *dev = chan->drm->dev;
 123         struct nv84_fence_priv *priv = chan->drm->fence;
 124         struct nv84_fence_chan *fctx = chan->fence;
 125         int i;
 126
 127         for (i = 0; i < dev->mode_config.num_crtc; i++) {
 128                 struct nouveau_bo *bo = nv50_display_crtc_sema(dev, i);
 129                 nouveau_bo_vma_del(bo, &fctx->dispc_vma[i]);
 130         }
 131
 132         nouveau_bo_vma_del(priv->bo, &fctx->vma_gart);
 133         nouveau_bo_vma_del(priv->bo, &fctx->vma);
 134         nouveau_fence_context_del(&fctx->base);
 135         chan->fence = NULL;
 136         kfree(fctx);
 137 }
 138
 139 int
 140 nv84_fence_context_new(struct nouveau_channel *chan)
 141 {
 142         struct nouveau_fifo_chan *fifo = (void *)chan->object;
 143         struct nouveau_client *client = nouveau_client(fifo);
 144         struct nv84_fence_priv *priv = chan->drm->fence;
 145         struct nv84_fence_chan *fctx;
 146         int ret, i;
 147
 148         fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL);
 149         if (!fctx)
 150                 return -ENOMEM;
 151
 152         nouveau_fence_context_new(&fctx->base);
 153         fctx->base.emit = nv84_fence_emit;
 154         fctx->base.sync = nv84_fence_sync;
 155         fctx->base.read = nv84_fence_read;
 156         fctx->base.emit32 = nv84_fence_emit32;
 157         fctx->base.sync32 = nv84_fence_sync32;
 158
 159         ret = nouveau_bo_vma_add(priv->bo, client->vm, &fctx->vma);
 160         if (ret == 0) {
 161                 ret = nouveau_bo_vma_add(priv->bo_gart, client->vm,
 162                                         &fctx->vma_gart);
 163         }
 164
 165         /* map display semaphore buffers into channel's vm */
 166         for (i = 0; !ret && i < chan->drm->dev->mode_config.num_crtc; i++) {
 167                 struct nouveau_bo *bo = nv50_display_crtc_sema(chan->drm->dev, i);
 168                 ret = nouveau_bo_vma_add(bo, client->vm, &fctx->dispc_vma[i]);
 169         }
 170
 171         nouveau_bo_wr32(priv->bo, fifo->chid * 16/4, 0x00000000);
 172
 173         if (ret)
 174                 nv84_fence_context_del(chan);
 175         return ret;
 176 }
 177
 178 static bool
 179 nv84_fence_suspend(struct nouveau_drm *drm)
 180 {
 181         struct nouveau_fifo *pfifo = nouveau_fifo(drm->device);
 182         struct nv84_fence_priv *priv = drm->fence;
 183         int i;
 184
 185         priv->suspend = vmalloc((pfifo->max + 1) * sizeof(u32));
 186         if (priv->suspend) {
 187                 for (i = 0; i <= pfifo->max; i++)
 188                         priv->suspend[i] = nouveau_bo_rd32(priv->bo, i*4);
 189         }
 190
 191         return priv->suspend != NULL;
 192 }
 193
 194 static void
 195 nv84_fence_resume(struct nouveau_drm *drm)
 196 {
 197         struct nouveau_fifo *pfifo = nouveau_fifo(drm->device);
 198         struct nv84_fence_priv *priv = drm->fence;
 199         int i;
 200
 201         if (priv->suspend) {
 202                 for (i = 0; i <= pfifo->max; i++)
 203                         nouveau_bo_wr32(priv->bo, i*4, priv->suspend[i]);
 204                 vfree(priv->suspend);
 205                 priv->suspend = NULL;
 206         }
 207 }
 208
 209 static void
 210 nv84_fence_destroy(struct nouveau_drm *drm)
 211 {
 212         struct nv84_fence_priv *priv = drm->fence;
 213         nouveau_bo_unmap(priv->bo_gart);
 214         if (priv->bo_gart)
 215                 nouveau_bo_unpin(priv->bo_gart);
 216         nouveau_bo_ref(NULL, &priv->bo_gart);
 217         nouveau_bo_unmap(priv->bo);
 218         if (priv->bo)
 219                 nouveau_bo_unpin(priv->bo);
 220         nouveau_bo_ref(NULL, &priv->bo);
 221         drm->fence = NULL;
 222         kfree(priv);
 223 }
 224
 225 int
 226 nv84_fence_create(struct nouveau_drm *drm)
 227 {
 228         struct nouveau_fifo *pfifo = nouveau_fifo(drm->device);
 229         struct nv84_fence_priv *priv;
 230         int ret;
 231
 232         priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
 233         if (!priv)
 234                 return -ENOMEM;
 235
 236         priv->base.dtor = nv84_fence_destroy;
 237         priv->base.suspend = nv84_fence_suspend;
 238         priv->base.resume = nv84_fence_resume;
 239         priv->base.context_new = nv84_fence_context_new;
 240         priv->base.context_del = nv84_fence_context_del;
 241
 242         init_waitqueue_head(&priv->base.waiting);
 243         priv->base.uevent = true;
 244
 245         ret = nouveau_bo_new(drm->dev, 16 * (pfifo->max + 1), 0,
 246                              TTM_PL_FLAG_VRAM, 0, 0, NULL, &priv->bo);
 247         if (ret == 0) {
 248                 ret = nouveau_bo_pin(priv->bo, TTM_PL_FLAG_VRAM);
 249                 if (ret == 0) {
 250                         ret = nouveau_bo_map(priv->bo);
 251                         if (ret)
 252                                 nouveau_bo_unpin(priv->bo);
 253                 }
 254                 if (ret)
 255                         nouveau_bo_ref(NULL, &priv->bo);
 256         }
 257
 258         if (ret == 0)
 259                 ret = nouveau_bo_new(drm->dev, 16 * (pfifo->max + 1), 0,
 260                                      TTM_PL_FLAG_TT, 0, 0, NULL,
 261                                      &priv->bo_gart);
 262         if (ret == 0) {
 263                 ret = nouveau_bo_pin(priv->bo_gart, TTM_PL_FLAG_TT);
 264                 if (ret == 0) {
 265                         ret = nouveau_bo_map(priv->bo_gart);
 266                         if (ret)
 267                                 nouveau_bo_unpin(priv->bo_gart);
 268                 }
 269                 if (ret)
 270                         nouveau_bo_ref(NULL, &priv->bo_gart);
 271         }
 272
 273         if (ret)
 274                 nv84_fence_destroy(drm);
 275         return ret;
 276 }