diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv84_fence.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv84_fence.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv84_fence.c b/drivers/gpu/drm/nouveau/nv84_fence.c new file mode 100644 index 000000000000..c2f889b0d340 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv84_fence.c @@ -0,0 +1,177 @@ +/* + * 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 + */ + +#include "drmP.h" +#include "nouveau_drv.h" +#include "nouveau_dma.h" +#include "nouveau_fifo.h" +#include "nouveau_ramht.h" +#include "nouveau_fence.h" + +struct nv84_fence_chan { + struct nouveau_fence_chan base; +}; + +struct nv84_fence_priv { + struct nouveau_fence_priv base; + struct nouveau_gpuobj *mem; +}; + +static int +nv84_fence_emit(struct nouveau_fence *fence) +{ + struct nouveau_channel *chan = fence->channel; + int ret = RING_SPACE(chan, 7); + if (ret == 0) { + BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 1); + OUT_RING (chan, NvSema); + BEGIN_NV04(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); + OUT_RING (chan, upper_32_bits(chan->id * 16)); + OUT_RING (chan, lower_32_bits(chan->id * 16)); + OUT_RING (chan, fence->sequence); + OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG); + FIRE_RING (chan); + } + return ret; +} + + +static int +nv84_fence_sync(struct nouveau_fence *fence, + struct nouveau_channel *prev, struct nouveau_channel *chan) +{ + int ret = RING_SPACE(chan, 7); + if (ret == 0) { + BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 1); + OUT_RING (chan, NvSema); + BEGIN_NV04(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); + OUT_RING (chan, upper_32_bits(prev->id * 16)); + OUT_RING (chan, lower_32_bits(prev->id * 16)); + OUT_RING (chan, fence->sequence); + OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_GEQUAL); + FIRE_RING (chan); + } + return ret; +} + +static u32 +nv84_fence_read(struct nouveau_channel *chan) +{ + struct nv84_fence_priv *priv = nv_engine(chan->dev, NVOBJ_ENGINE_FENCE); + return nv_ro32(priv->mem, chan->id * 16); +} + +static void +nv84_fence_context_del(struct nouveau_channel *chan, int engine) +{ + struct nv84_fence_chan *fctx = chan->engctx[engine]; + nouveau_fence_context_del(&fctx->base); + chan->engctx[engine] = NULL; + kfree(fctx); +} + +static int +nv84_fence_context_new(struct nouveau_channel *chan, int engine) +{ + struct nv84_fence_priv *priv = nv_engine(chan->dev, engine); + struct nv84_fence_chan *fctx; + struct nouveau_gpuobj *obj; + int ret; + + fctx = chan->engctx[engine] = kzalloc(sizeof(*fctx), GFP_KERNEL); + if (!fctx) + return -ENOMEM; + + nouveau_fence_context_new(&fctx->base); + + ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_FROM_MEMORY, + priv->mem->vinst, priv->mem->size, + NV_MEM_ACCESS_RW, + NV_MEM_TARGET_VRAM, &obj); + if (ret == 0) { + ret = nouveau_ramht_insert(chan, NvSema, obj); + nouveau_gpuobj_ref(NULL, &obj); + nv_wo32(priv->mem, chan->id * 16, 0x00000000); + } + + if (ret) + nv84_fence_context_del(chan, engine); + return ret; +} + +static int +nv84_fence_fini(struct drm_device *dev, int engine, bool suspend) +{ + return 0; +} + +static int +nv84_fence_init(struct drm_device *dev, int engine) +{ + return 0; +} + +static void +nv84_fence_destroy(struct drm_device *dev, int engine) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv84_fence_priv *priv = nv_engine(dev, engine); + + nouveau_gpuobj_ref(NULL, &priv->mem); + dev_priv->eng[engine] = NULL; + kfree(priv); +} + +int +nv84_fence_create(struct drm_device *dev) +{ + struct nouveau_fifo_priv *pfifo = nv_engine(dev, NVOBJ_ENGINE_FIFO); + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv84_fence_priv *priv; + int ret; + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base.engine.destroy = nv84_fence_destroy; + priv->base.engine.init = nv84_fence_init; + priv->base.engine.fini = nv84_fence_fini; + priv->base.engine.context_new = nv84_fence_context_new; + priv->base.engine.context_del = nv84_fence_context_del; + priv->base.emit = nv84_fence_emit; + priv->base.sync = nv84_fence_sync; + priv->base.read = nv84_fence_read; + dev_priv->eng[NVOBJ_ENGINE_FENCE] = &priv->base.engine; + + ret = nouveau_gpuobj_new(dev, NULL, 16 * pfifo->channels, + 0x1000, 0, &priv->mem); + if (ret) + goto out; + +out: + if (ret) + nv84_fence_destroy(dev, NVOBJ_ENGINE_FENCE); + return ret; +} |