nvc0_fence.c revision e18c080fb8695d038f69c26c248f5ecbd9e8aa77
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 37struct nvc0_fence_priv { 38 struct nouveau_fence_priv base; 39 struct nouveau_bo *bo; 40 u32 *suspend; 41}; 42 43struct nvc0_fence_chan { 44 struct nouveau_fence_chan base; 45 struct nouveau_vma vma; 46 struct nouveau_vma dispc_vma[4]; 47}; 48 49u64 50nvc0_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 56static int 57nvc0_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, 6); 66 if (ret == 0) { 67 BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 5); 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 OUT_RING (chan, 0x00000000); 73 FIRE_RING (chan); 74 } 75 76 return ret; 77} 78 79static int 80nvc0_fence_sync(struct nouveau_fence *fence, 81 struct nouveau_channel *prev, struct nouveau_channel *chan) 82{ 83 struct nvc0_fence_chan *fctx = chan->fence; 84 struct nouveau_fifo_chan *fifo = (void *)prev->object; 85 u64 addr = fctx->vma.offset + fifo->chid * 16; 86 int ret; 87 88 ret = RING_SPACE(chan, 5); 89 if (ret == 0) { 90 BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); 91 OUT_RING (chan, upper_32_bits(addr)); 92 OUT_RING (chan, lower_32_bits(addr)); 93 OUT_RING (chan, fence->sequence); 94 OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_GEQUAL | 95 NVC0_SUBCHAN_SEMAPHORE_TRIGGER_YIELD); 96 FIRE_RING (chan); 97 } 98 99 return ret; 100} 101 102static u32 103nvc0_fence_read(struct nouveau_channel *chan) 104{ 105 struct nouveau_fifo_chan *fifo = (void *)chan->object; 106 struct nvc0_fence_priv *priv = chan->drm->fence; 107 return nouveau_bo_rd32(priv->bo, fifo->chid * 16/4); 108} 109 110static void 111nvc0_fence_context_del(struct nouveau_channel *chan) 112{ 113 struct drm_device *dev = chan->drm->dev; 114 struct nvc0_fence_priv *priv = chan->drm->fence; 115 struct nvc0_fence_chan *fctx = chan->fence; 116 int i; 117 118 for (i = 0; i < dev->mode_config.num_crtc; i++) { 119 struct nouveau_bo *bo = nv50_display_crtc_sema(dev, i); 120 nouveau_bo_vma_del(bo, &fctx->dispc_vma[i]); 121 } 122 123 nouveau_bo_vma_del(priv->bo, &fctx->vma); 124 nouveau_fence_context_del(&fctx->base); 125 chan->fence = NULL; 126 kfree(fctx); 127} 128 129static int 130nvc0_fence_context_new(struct nouveau_channel *chan) 131{ 132 struct nouveau_fifo_chan *fifo = (void *)chan->object; 133 struct nouveau_client *client = nouveau_client(fifo); 134 struct nvc0_fence_priv *priv = chan->drm->fence; 135 struct nvc0_fence_chan *fctx; 136 int ret, i; 137 138 fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL); 139 if (!fctx) 140 return -ENOMEM; 141 142 nouveau_fence_context_new(&fctx->base); 143 144 ret = nouveau_bo_vma_add(priv->bo, client->vm, &fctx->vma); 145 if (ret) 146 nvc0_fence_context_del(chan); 147 148 /* map display semaphore buffers into channel's vm */ 149 for (i = 0; !ret && i < chan->drm->dev->mode_config.num_crtc; i++) { 150 struct nouveau_bo *bo = nv50_display_crtc_sema(chan->drm->dev, i); 151 ret = nouveau_bo_vma_add(bo, client->vm, &fctx->dispc_vma[i]); 152 } 153 154 nouveau_bo_wr32(priv->bo, fifo->chid * 16/4, 0x00000000); 155 return ret; 156} 157 158static bool 159nvc0_fence_suspend(struct nouveau_drm *drm) 160{ 161 struct nouveau_fifo *pfifo = nouveau_fifo(drm->device); 162 struct nvc0_fence_priv *priv = drm->fence; 163 int i; 164 165 priv->suspend = vmalloc((pfifo->max + 1) * sizeof(u32)); 166 if (priv->suspend) { 167 for (i = 0; i <= pfifo->max; i++) 168 priv->suspend[i] = nouveau_bo_rd32(priv->bo, i); 169 } 170 171 return priv->suspend != NULL; 172} 173 174static void 175nvc0_fence_resume(struct nouveau_drm *drm) 176{ 177 struct nouveau_fifo *pfifo = nouveau_fifo(drm->device); 178 struct nvc0_fence_priv *priv = drm->fence; 179 int i; 180 181 if (priv->suspend) { 182 for (i = 0; i <= pfifo->max; i++) 183 nouveau_bo_wr32(priv->bo, i, priv->suspend[i]); 184 vfree(priv->suspend); 185 priv->suspend = NULL; 186 } 187} 188 189static void 190nvc0_fence_destroy(struct nouveau_drm *drm) 191{ 192 struct nvc0_fence_priv *priv = drm->fence; 193 nouveau_bo_unmap(priv->bo); 194 if (priv->bo) 195 nouveau_bo_unpin(priv->bo); 196 nouveau_bo_ref(NULL, &priv->bo); 197 drm->fence = NULL; 198 kfree(priv); 199} 200 201int 202nvc0_fence_create(struct nouveau_drm *drm) 203{ 204 struct nouveau_fifo *pfifo = nouveau_fifo(drm->device); 205 struct nvc0_fence_priv *priv; 206 int ret; 207 208 priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); 209 if (!priv) 210 return -ENOMEM; 211 212 priv->base.dtor = nvc0_fence_destroy; 213 priv->base.suspend = nvc0_fence_suspend; 214 priv->base.resume = nvc0_fence_resume; 215 priv->base.context_new = nvc0_fence_context_new; 216 priv->base.context_del = nvc0_fence_context_del; 217 priv->base.emit = nvc0_fence_emit; 218 priv->base.sync = nvc0_fence_sync; 219 priv->base.read = nvc0_fence_read; 220 221 init_waitqueue_head(&priv->base.waiting); 222 priv->base.uevent = true; 223 224 ret = nouveau_bo_new(drm->dev, 16 * (pfifo->max + 1), 0, 225 TTM_PL_FLAG_VRAM, 0, 0, NULL, &priv->bo); 226 if (ret == 0) { 227 ret = nouveau_bo_pin(priv->bo, TTM_PL_FLAG_VRAM); 228 if (ret == 0) { 229 ret = nouveau_bo_map(priv->bo); 230 if (ret) 231 nouveau_bo_unpin(priv->bo); 232 } 233 if (ret) 234 nouveau_bo_ref(NULL, &priv->bo); 235 } 236 237 if (ret) 238 nvc0_fence_destroy(drm); 239 return ret; 240} 241