diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv10_fence.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv10_fence.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv10_fence.c b/drivers/gpu/drm/nouveau/nv10_fence.c new file mode 100644 index 00000000000..8a1b7500918 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv10_fence.c @@ -0,0 +1,214 @@ +/* + * Copyright 2012 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs <bskeggs@redhat.com> + */ + +#include "drmP.h" +#include "nouveau_drv.h" +#include "nouveau_dma.h" +#include "nouveau_ramht.h" +#include "nouveau_fence.h" + +struct nv10_fence_chan { + struct nouveau_fence_chan base; +}; + +struct nv10_fence_priv { + struct nouveau_fence_priv base; + struct nouveau_bo *bo; + spinlock_t lock; + u32 sequence; +}; + +static int +nv10_fence_emit(struct nouveau_fence *fence) +{ + struct nouveau_channel *chan = fence->channel; + int ret = RING_SPACE(chan, 2); + if (ret == 0) { + BEGIN_NV04(chan, 0, NV10_SUBCHAN_REF_CNT, 1); + OUT_RING (chan, fence->sequence); + FIRE_RING (chan); + } + return ret; +} + + +static int +nv10_fence_sync(struct nouveau_fence *fence, + struct nouveau_channel *prev, struct nouveau_channel *chan) +{ + return -ENODEV; +} + +static int +nv17_fence_sync(struct nouveau_fence *fence, + struct nouveau_channel *prev, struct nouveau_channel *chan) +{ + struct nv10_fence_priv *priv = nv_engine(chan->dev, NVOBJ_ENGINE_FENCE); + u32 value; + int ret; + + if (!mutex_trylock(&prev->mutex)) + return -EBUSY; + + spin_lock(&priv->lock); + value = priv->sequence; + priv->sequence += 2; + spin_unlock(&priv->lock); + + ret = RING_SPACE(prev, 5); + if (!ret) { + BEGIN_NV04(prev, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 4); + OUT_RING (prev, NvSema); + OUT_RING (prev, 0); + OUT_RING (prev, value + 0); + OUT_RING (prev, value + 1); + FIRE_RING (prev); + } + + if (!ret && !(ret = RING_SPACE(chan, 5))) { + BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 4); + OUT_RING (chan, NvSema); + OUT_RING (chan, 0); + OUT_RING (chan, value + 1); + OUT_RING (chan, value + 2); + FIRE_RING (chan); + } + + mutex_unlock(&prev->mutex); + return 0; +} + +static u32 +nv10_fence_read(struct nouveau_channel *chan) +{ + return nvchan_rd32(chan, 0x0048); +} + +static void +nv10_fence_context_del(struct nouveau_channel *chan, int engine) +{ + struct nv10_fence_chan *fctx = chan->engctx[engine]; + nouveau_fence_context_del(&fctx->base); + chan->engctx[engine] = NULL; + kfree(fctx); +} + +static int +nv10_fence_context_new(struct nouveau_channel *chan, int engine) +{ + struct nv10_fence_priv *priv = nv_engine(chan->dev, engine); + struct nv10_fence_chan *fctx; + struct nouveau_gpuobj *obj; + int ret = 0; + + fctx = chan->engctx[engine] = kzalloc(sizeof(*fctx), GFP_KERNEL); + if (!fctx) + return -ENOMEM; + + nouveau_fence_context_new(&fctx->base); + + if (priv->bo) { + struct ttm_mem_reg *mem = &priv->bo->bo.mem; + + ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_FROM_MEMORY, + mem->start * PAGE_SIZE, mem->size, + NV_MEM_ACCESS_RW, + NV_MEM_TARGET_VRAM, &obj); + if (!ret) { + ret = nouveau_ramht_insert(chan, NvSema, obj); + nouveau_gpuobj_ref(NULL, &obj); + } + } + + if (ret) + nv10_fence_context_del(chan, engine); + return ret; +} + +static int +nv10_fence_fini(struct drm_device *dev, int engine, bool suspend) +{ + return 0; +} + +static int +nv10_fence_init(struct drm_device *dev, int engine) +{ + return 0; +} + +static void +nv10_fence_destroy(struct drm_device *dev, int engine) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv10_fence_priv *priv = nv_engine(dev, engine); + + nouveau_bo_ref(NULL, &priv->bo); + dev_priv->eng[engine] = NULL; + kfree(priv); +} + +int +nv10_fence_create(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv10_fence_priv *priv; + int ret = 0; + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base.engine.destroy = nv10_fence_destroy; + priv->base.engine.init = nv10_fence_init; + priv->base.engine.fini = nv10_fence_fini; + priv->base.engine.context_new = nv10_fence_context_new; + priv->base.engine.context_del = nv10_fence_context_del; + priv->base.emit = nv10_fence_emit; + priv->base.read = nv10_fence_read; + priv->base.sync = nv10_fence_sync; + dev_priv->eng[NVOBJ_ENGINE_FENCE] = &priv->base.engine; + spin_lock_init(&priv->lock); + + if (dev_priv->chipset >= 0x17) { + ret = nouveau_bo_new(dev, 4096, 0x1000, TTM_PL_FLAG_VRAM, + 0, 0x0000, NULL, &priv->bo); + if (!ret) { + ret = nouveau_bo_pin(priv->bo, TTM_PL_FLAG_VRAM); + if (!ret) + ret = nouveau_bo_map(priv->bo); + if (ret) + nouveau_bo_ref(NULL, &priv->bo); + } + + if (ret == 0) { + nouveau_bo_wr32(priv->bo, 0x000, 0x00000000); + priv->base.sync = nv17_fence_sync; + } + } + + if (ret) + nv10_fence_destroy(dev, NVOBJ_ENGINE_FENCE); + return ret; +} |