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/*
* 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 drm_device *dev, int channel, DRMFILE filp)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_fifo *chan = dev_priv->fifos[channel];
int flags, ret;
/*TODO: PCI notifier blocks */
if (dev_priv->agp_heap)
flags = NOUVEAU_MEM_AGP | NOUVEAU_MEM_FB_ACCEPTABLE;
else
flags = NOUVEAU_MEM_FB;
flags |= NOUVEAU_MEM_MAPPED;
chan->notifier_block = nouveau_mem_alloc(dev, 0, PAGE_SIZE, flags,filp);
if (!chan->notifier_block)
return DRM_ERR(ENOMEM);
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 drm_device *dev, int channel)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_fifo *chan = dev_priv->fifos[channel];
if (chan->notifier_block) {
nouveau_mem_free(dev, chan->notifier_block);
chan->notifier_block = NULL;
}
/*XXX: heap destroy */
}
int
nouveau_notifier_alloc(struct drm_device *dev, int channel, uint32_t handle,
int count, uint32_t *b_offset)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_fifo *chan = dev_priv->fifos[channel];
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",
channel);
return DRM_ERR(EINVAL);
}
mem = nouveau_mem_alloc_block(chan->notifier_heap, 32, 0, chan->filp);
if (!mem) {
DRM_ERROR("Channel %d notifier block full\n", channel);
return DRM_ERR(ENOMEM);
}
mem->flags = NOUVEAU_MEM_NOTIFIER;
offset = chan->notifier_block->start + mem->start;
if (chan->notifier_block->flags & NOUVEAU_MEM_FB) {
target = NV_DMA_TARGET_VIDMEM;
} else if (chan->notifier_block->flags & NOUVEAU_MEM_AGP) {
target = NV_DMA_TARGET_AGP;
} else {
DRM_ERROR("Bad DMA target, flags 0x%08x!\n",
chan->notifier_block->flags);
return DRM_ERR(EINVAL);
}
if ((ret = nouveau_gpuobj_dma_new(dev, channel, 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;
}
if ((ret = nouveau_gpuobj_ref_add(dev, channel, 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(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
struct drm_nouveau_notifier_alloc na;
int ret;
DRM_COPY_FROM_USER_IOCTL(na,
(struct drm_nouveau_notifier_alloc __user*)data,
sizeof(na));
if (!nouveau_fifo_owner(dev, filp, na.channel)) {
DRM_ERROR("pid %d doesn't own channel %d\n",
DRM_CURRENTPID, na.channel);
return DRM_ERR(EPERM);
}
ret = nouveau_notifier_alloc(dev, na.channel, na.handle,
na.count, &na.offset);
if (ret)
return ret;
DRM_COPY_TO_USER_IOCTL((struct drm_nouveau_notifier_alloc __user*)data,
na, sizeof(na));
return 0;
}
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