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 struct nvc0_fence_priv { 38 struct nouveau_fence_priv base; 39 struct nouveau_bo *bo; 40 u32 *suspend; 41 }; 42 43 struct nvc0_fence_chan { 44 struct nouveau_fence_chan base; 45 struct nouveau_vma vma; 46 struct nouveau_vma dispc_vma[4]; 47 }; 48 49 u64 50 nvc0_fence_crtc(struct nouveau_channel *chan, int crtc) 51 { 52 struct nvc0_fence_chan *fctx = chan->fence; 53 return fctx->dispc_vma[crtc].offset; 54 } 55 56 static int 57 nvc0_fence_emit(struct nouveau_fence *fence) 58 { 59 struct nouveau_channel *chan = fence->channel; 60 struct nvc0_fence_chan *fctx = chan->fence; 61 struct nouveau_fifo_chan *fifo = (void *)chan->object; 62 u64 addr = fctx->vma.offset + fifo->chid * 16; 63 int ret; 64 65 ret = RING_SPACE(chan, 5); 66 if (ret == 0) { 67 BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); 68 OUT_RING (chan, upper_32_bits(addr)); 69 OUT_RING (chan, lower_32_bits(addr)); 70 OUT_RING (chan, fence->sequence); 71 OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG); 72 FIRE_RING (chan); 73 } 74 75 return ret; 76 } 77 78 static int 79 nvc0_fence_sync(struct nouveau_fence *fence, 80 struct nouveau_channel *prev, struct nouveau_channel *chan) 81 { 82 struct nvc0_fence_chan *fctx = chan->fence; 83 struct nouveau_fifo_chan *fifo = (void *)prev->object; 84 u64 addr = fctx->vma.offset + fifo->chid * 16; 85 int ret; 86 87 ret = RING_SPACE(chan, 5); 88 if (ret == 0) { 89 BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); 90 OUT_RING (chan, upper_32_bits(addr)); 91 OUT_RING (chan, lower_32_bits(addr)); 92 OUT_RING (chan, fence->sequence); 93 OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_GEQUAL | 94 NVC0_SUBCHAN_SEMAPHORE_TRIGGER_YIELD); 95 FIRE_RING (chan); 96 } 97 98 return ret; 99 } 100 101 static u32 102 nvc0_fence_read(struct nouveau_channel *chan) 103 { 104 struct nouveau_fifo_chan *fifo = (void *)chan->object; 105 struct nvc0_fence_priv *priv = chan->drm->fence; 106 return nouveau_bo_rd32(priv->bo, fifo->chid * 16/4); 107 } 108 109 static void 110 nvc0_fence_context_del(struct nouveau_channel *chan) 111 { 112 struct drm_device *dev = chan->drm->dev; 113 struct nvc0_fence_priv *priv = chan->drm->fence; 114 struct nvc0_fence_chan *fctx = chan->fence; 115 int i; 116 117 for (i = 0; i < dev->mode_config.num_crtc; i++) { 118 struct nouveau_bo *bo = nv50_display_crtc_sema(dev, i); 119 nouveau_bo_vma_del(bo, &fctx->dispc_vma[i]); 120 } 121 122 nouveau_bo_vma_del(priv->bo, &fctx->vma); 123 nouveau_fence_context_del(&fctx->base); 124 chan->fence = NULL; 125 kfree(fctx); 126 } 127 128 static int 129 nvc0_fence_context_new(struct nouveau_channel *chan) 130 { 131 struct nouveau_fifo_chan *fifo = (void *)chan->object; 132 struct nouveau_client *client = nouveau_client(fifo); 133 struct nvc0_fence_priv *priv = chan->drm->fence; 134 struct nvc0_fence_chan *fctx; 135 int ret, i; 136 137 fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL); 138 if (!fctx) 139 return -ENOMEM; 140 141 nouveau_fence_context_new(&fctx->base); 142 143 ret = nouveau_bo_vma_add(priv->bo, client->vm, &fctx->vma); 144 if (ret) 145 nvc0_fence_context_del(chan); 146 147 /* map display semaphore buffers into channel's vm */ 148 for (i = 0; !ret && i < chan->drm->dev->mode_config.num_crtc; i++) { 149 struct nouveau_bo *bo = nv50_display_crtc_sema(chan->drm->dev, i); 150 ret = nouveau_bo_vma_add(bo, client->vm, &fctx->dispc_vma[i]); 151 } 152 153 nouveau_bo_wr32(priv->bo, fifo->chid * 16/4, 0x00000000); 154 return ret; 155 } 156 157 static bool 158 nvc0_fence_suspend(struct nouveau_drm *drm) 159 { 160 struct nouveau_fifo *pfifo = nouveau_fifo(drm->device); 161 struct nvc0_fence_priv *priv = drm->fence; 162 int i; 163 164 priv->suspend = vmalloc((pfifo->max + 1) * sizeof(u32)); 165 if (priv->suspend) { 166 for (i = 0; i <= pfifo->max; i++) 167 priv->suspend[i] = nouveau_bo_rd32(priv->bo, i); 168 } 169 170 return priv->suspend != NULL; 171 } 172 173 static void 174 nvc0_fence_resume(struct nouveau_drm *drm) 175 { 176 struct nouveau_fifo *pfifo = nouveau_fifo(drm->device); 177 struct nvc0_fence_priv *priv = drm->fence; 178 int i; 179 180 if (priv->suspend) { 181 for (i = 0; i <= pfifo->max; i++) 182 nouveau_bo_wr32(priv->bo, i, priv->suspend[i]); 183 vfree(priv->suspend); 184 priv->suspend = NULL; 185 } 186 } 187 188 static void 189 nvc0_fence_destroy(struct nouveau_drm *drm) 190 { 191 struct nvc0_fence_priv *priv = drm->fence; 192 nouveau_bo_unmap(priv->bo); 193 if (priv->bo) 194 nouveau_bo_unpin(priv->bo); 195 nouveau_bo_ref(NULL, &priv->bo); 196 drm->fence = NULL; 197 kfree(priv); 198 } 199 200 int 201 nvc0_fence_create(struct nouveau_drm *drm) 202 { 203 struct nouveau_fifo *pfifo = nouveau_fifo(drm->device); 204 struct nvc0_fence_priv *priv; 205 int ret; 206 207 priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); 208 if (!priv) 209 return -ENOMEM; 210 211 priv->base.dtor = nvc0_fence_destroy; 212 priv->base.suspend = nvc0_fence_suspend; 213 priv->base.resume = nvc0_fence_resume; 214 priv->base.context_new = nvc0_fence_context_new; 215 priv->base.context_del = nvc0_fence_context_del; 216 priv->base.emit = nvc0_fence_emit; 217 priv->base.sync = nvc0_fence_sync; 218 priv->base.read = nvc0_fence_read; 219 220 ret = nouveau_bo_new(drm->dev, 16 * (pfifo->max + 1), 0, 221 TTM_PL_FLAG_VRAM, 0, 0, NULL, &priv->bo); 222 if (ret == 0) { 223 ret = nouveau_bo_pin(priv->bo, TTM_PL_FLAG_VRAM); 224 if (ret == 0) { 225 ret = nouveau_bo_map(priv->bo); 226 if (ret) 227 nouveau_bo_unpin(priv->bo); 228 } 229 if (ret) 230 nouveau_bo_ref(NULL, &priv->bo); 231 } 232 233 if (ret) 234 nvc0_fence_destroy(drm); 235 return ret; 236 } 237