diff options
Diffstat (limited to 'shared-core/nouveau_notifier.c')
| -rw-r--r-- | shared-core/nouveau_notifier.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/shared-core/nouveau_notifier.c b/shared-core/nouveau_notifier.c new file mode 100644 index 00000000..31e2b244 --- /dev/null +++ b/shared-core/nouveau_notifier.c @@ -0,0 +1,166 @@ +/* + * 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; +} + |