mirror of https://gitee.com/openkylin/linux.git
195 lines
4.9 KiB
C
195 lines
4.9 KiB
C
/*
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* Copyright (C) 2007 Ben Skeggs.
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*
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "drmP.h"
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#include "drm.h"
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#include "nouveau_drv.h"
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int
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nouveau_notifier_init_channel(struct nouveau_channel *chan)
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{
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struct drm_device *dev = chan->dev;
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struct nouveau_bo *ntfy = NULL;
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uint32_t flags;
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int ret;
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if (nouveau_vram_notify)
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flags = TTM_PL_FLAG_VRAM;
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else
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flags = TTM_PL_FLAG_TT;
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ret = nouveau_gem_new(dev, NULL, PAGE_SIZE, 0, flags,
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0, 0x0000, false, true, &ntfy);
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if (ret)
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return ret;
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ret = nouveau_bo_pin(ntfy, flags);
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if (ret)
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goto out_err;
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ret = nouveau_bo_map(ntfy);
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if (ret)
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goto out_err;
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ret = drm_mm_init(&chan->notifier_heap, 0, ntfy->bo.mem.size);
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if (ret)
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goto out_err;
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chan->notifier_bo = ntfy;
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out_err:
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if (ret)
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drm_gem_object_unreference_unlocked(ntfy->gem);
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return ret;
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}
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void
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nouveau_notifier_takedown_channel(struct nouveau_channel *chan)
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{
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struct drm_device *dev = chan->dev;
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if (!chan->notifier_bo)
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return;
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nouveau_bo_unmap(chan->notifier_bo);
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mutex_lock(&dev->struct_mutex);
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nouveau_bo_unpin(chan->notifier_bo);
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mutex_unlock(&dev->struct_mutex);
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drm_gem_object_unreference_unlocked(chan->notifier_bo->gem);
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drm_mm_takedown(&chan->notifier_heap);
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}
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static void
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nouveau_notifier_gpuobj_dtor(struct drm_device *dev,
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struct nouveau_gpuobj *gpuobj)
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{
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NV_DEBUG(dev, "\n");
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if (gpuobj->priv)
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drm_mm_put_block(gpuobj->priv);
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}
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int
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nouveau_notifier_alloc(struct nouveau_channel *chan, uint32_t handle,
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int size, uint32_t *b_offset)
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{
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struct drm_device *dev = chan->dev;
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struct drm_nouveau_private *dev_priv = dev->dev_private;
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struct nouveau_gpuobj *nobj = NULL;
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struct drm_mm_node *mem;
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uint32_t offset;
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int target, ret;
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mem = drm_mm_search_free(&chan->notifier_heap, size, 0, 0);
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if (mem)
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mem = drm_mm_get_block(mem, size, 0);
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if (!mem) {
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NV_ERROR(dev, "Channel %d notifier block full\n", chan->id);
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return -ENOMEM;
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}
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offset = chan->notifier_bo->bo.mem.mm_node->start << PAGE_SHIFT;
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if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_VRAM) {
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target = NV_DMA_TARGET_VIDMEM;
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} else
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if (chan->notifier_bo->bo.mem.mem_type == TTM_PL_TT) {
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if (dev_priv->gart_info.type == NOUVEAU_GART_SGDMA &&
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dev_priv->card_type < NV_50) {
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ret = nouveau_sgdma_get_page(dev, offset, &offset);
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if (ret)
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return ret;
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target = NV_DMA_TARGET_PCI;
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} else {
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target = NV_DMA_TARGET_AGP;
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if (dev_priv->card_type >= NV_50)
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offset += dev_priv->vm_gart_base;
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}
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} else {
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NV_ERROR(dev, "Bad DMA target, mem_type %d!\n",
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chan->notifier_bo->bo.mem.mem_type);
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return -EINVAL;
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}
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offset += mem->start;
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ret = nouveau_gpuobj_dma_new(chan, NV_CLASS_DMA_IN_MEMORY, offset,
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mem->size, NV_DMA_ACCESS_RW, target,
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&nobj);
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if (ret) {
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drm_mm_put_block(mem);
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NV_ERROR(dev, "Error creating notifier ctxdma: %d\n", ret);
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return ret;
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}
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nobj->dtor = nouveau_notifier_gpuobj_dtor;
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nobj->priv = mem;
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ret = nouveau_gpuobj_ref_add(dev, chan, handle, nobj, NULL);
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if (ret) {
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nouveau_gpuobj_del(dev, &nobj);
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drm_mm_put_block(mem);
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NV_ERROR(dev, "Error referencing notifier ctxdma: %d\n", ret);
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return ret;
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}
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*b_offset = mem->start;
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return 0;
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}
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int
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nouveau_notifier_offset(struct nouveau_gpuobj *nobj, uint32_t *poffset)
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{
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if (!nobj || nobj->dtor != nouveau_notifier_gpuobj_dtor)
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return -EINVAL;
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if (poffset) {
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struct drm_mm_node *mem = nobj->priv;
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if (*poffset >= mem->size)
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return false;
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*poffset += mem->start;
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}
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return 0;
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}
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int
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nouveau_ioctl_notifier_alloc(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_nouveau_notifierobj_alloc *na = data;
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struct nouveau_channel *chan;
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int ret;
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NOUVEAU_GET_USER_CHANNEL_WITH_RETURN(na->channel, file_priv, chan);
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ret = nouveau_notifier_alloc(chan, na->handle, na->size, &na->offset);
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if (ret)
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return ret;
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return 0;
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}
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