renesas/drm.git - libdrm, cloned from git://anongit.freedesktop.org/mesa/drm

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Diffstat (limited to 'libdrm/dri_bufmgr.c')

0 files changed, 0 insertions, 0 deletions

/* * Copyright (C) 2007 Ben Skeggs. * * All Rights Reserved. * * 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 (including the * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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. * */ #include "drmP.h" #include "drm.h" #include "nouveau_drv.h" int nouveau_notifier_init_channel(struct nouveau_channel *chan) { struct drm_device *dev = chan->dev; int flags, ret; flags = (NOUVEAU_MEM_PCI | NOUVEAU_MEM_MAPPED | NOUVEAU_MEM_FB_ACCEPTABLE); chan->notifier_block = nouveau_mem_alloc(dev, 0, PAGE_SIZE, flags, (struct drm_file *)-2); if (!chan->notifier_block) return -ENOMEM; DRM_DEBUG("Allocated notifier block in 0x%08x\n", chan->notifier_block->flags); ret = nouveau_mem_init_heap(&chan->notifier_heap, 0, chan->notifier_block->size); if (ret) return ret; return 0; } void nouveau_notifier_takedown_channel(struct nouveau_channel *chan) { struct drm_device *dev = chan->dev; if (chan->notifier_block) { nouveau_mem_free(dev, chan->notifier_block); chan->notifier_block = NULL; } nouveau_mem_takedown(&chan->notifier_heap); } static void nouveau_notifier_gpuobj_dtor(struct drm_device *dev, struct nouveau_gpuobj *gpuobj) { DRM_DEBUG("\n"); if (gpuobj->priv) nouveau_mem_free_block(gpuobj->priv); } int nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle, int count, uint32_t *b_offset) { struct drm_device *dev = chan->dev; struct drm_nouveau_private *dev_priv = dev->dev_private; struct nouveau_gpuobj *nobj = NULL; struct mem_block *mem; uint32_t offset; int target, ret; if (!chan->notifier_heap) { DRM_ERROR("Channel %d doesn't have a notifier heap!\n", chan->id); return -EINVAL; } mem = nouveau_mem_alloc_block(chan->notifier_heap, count*32, 0, (struct drm_file *)-2); if (!mem) { DRM_ERROR("Channel %d notifier block full\n", chan->id); return -ENOMEM; } mem->flags = NOUVEAU_MEM_NOTIFIER; offset = chan->notifier_block->start; if (chan->notifier_block->flags & NOUVEAU_MEM_FB) { target = NV_DMA_TARGET_VIDMEM; } else if (chan->notifier_block->flags & NOUVEAU_MEM_AGP) { if (dev_priv->gart_info.type == NOUVEAU_GART_SGDMA && dev_priv->card_type < NV_50) { ret = nouveau_sgdma_get_page(dev, offset, &offset); if (ret) return ret; target = NV_DMA_TARGET_PCI; } else { target = NV_DMA_TARGET_AGP; } } else if (chan->notifier_block->flags & NOUVEAU_MEM_PCI) { target = NV_DMA_TARGET_PCI_NONLINEAR; } else { DRM_ERROR("Bad DMA target, flags 0x%08x!\n", chan->notifier_block->flags); return -EINVAL; } offset += mem->start; if ((ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, offset, mem->size, NV_DMA_ACCESS_RW, target, &nobj))) { nouveau_mem_free_block(mem); DRM_ERROR("Error creating notifier ctxdma: %d\n", ret); return ret; } nobj->dtor = nouveau_notifier_gpuobj_dtor; nobj->priv = mem; if ((ret = nouveau_gpuobj_ref_add(dev, chan, handle, nobj, NULL))) { nouveau_gpuobj_del(dev, &nobj); nouveau_mem_free_block(mem); DRM_ERROR("Error referencing notifier ctxdma: %d\n", ret); return ret; } *b_offset = mem->start; return 0; } int nouveau_ioctl_notifier_alloc(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_nouveau_notifierobj_alloc *na = data; struct nouveau_channel *chan; int ret; NOUVEAU_CHECK_INITIALISED_WITH_RETURN; NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(na->channel, file_priv, chan); ret = nouveau_notifier_alloc(chan, na->handle, na->count, &na->offset); if (ret) return ret; return 0; }


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