diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_fence.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv50_fence.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_fence.c b/drivers/gpu/drm/nouveau/nv50_fence.c new file mode 100644 index 000000000000..10aa04f26b83 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nv50_fence.c @@ -0,0 +1,125 @@ +/* + * 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 <core/ramht.h> +#include "nouveau_fence.h" +#include "nv50_display.h" + +struct nv50_fence_chan { + struct nouveau_fence_chan base; +}; + +struct nv50_fence_priv { + struct nouveau_fence_priv base; + struct nouveau_bo *bo; + spinlock_t lock; + u32 sequence; +}; + +static int +nv50_fence_context_new(struct nouveau_channel *chan) +{ + struct drm_nouveau_private *dev_priv = chan->dev->dev_private; + struct nv50_fence_priv *priv = dev_priv->fence.func; + struct nv50_fence_chan *fctx; + struct ttm_mem_reg *mem = &priv->bo->bo.mem; + struct nouveau_gpuobj *obj; + int ret = 0, i; + + fctx = chan->fence = 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, + 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); + } + + /* dma objects for display sync channel semaphore blocks */ + for (i = 0; i < chan->dev->mode_config.num_crtc; i++) { + struct nv50_display *pdisp = nv50_display(chan->dev); + struct nv50_display_crtc *dispc = &pdisp->crtc[i]; + struct nouveau_gpuobj *obj = NULL; + + ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, + dispc->sem.bo->bo.offset, 0x1000, + NV_MEM_ACCESS_RW, + NV_MEM_TARGET_VRAM, &obj); + if (ret) + break; + + ret = nouveau_ramht_insert(chan, NvEvoSema0 + i, obj); + nouveau_gpuobj_ref(NULL, &obj); + } + + if (ret) + nv10_fence_context_del(chan); + return ret; +} + +int +nv50_fence_create(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nv50_fence_priv *priv; + int ret = 0; + + priv = kzalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base.dtor = nv10_fence_destroy; + priv->base.context_new = nv50_fence_context_new; + priv->base.context_del = nv10_fence_context_del; + priv->base.emit = nv10_fence_emit; + priv->base.read = nv10_fence_read; + priv->base.sync = nv17_fence_sync; + dev_priv->fence.func = &priv->base; + spin_lock_init(&priv->lock); + + 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); + else + nv10_fence_destroy(dev); + return ret; +} |