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/*
* Copyright 2006 Tungsten Graphics Inc., Bismarck, ND., USA.
* 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, sub license,
* 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS AND/OR THEIR 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.
*/
/*
* Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
*/
#include "drmP.h"
#include "via_drm.h"
#include "via_drv.h"
#include "drm_sman.h"
#define VIA_MM_ALIGN_SHIFT 4
#define VIA_MM_ALIGN_MASK ( (1 << VIA_MM_ALIGN_SHIFT) - 1)
int via_agp_init(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_via_agp_t agp;
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
int ret;
DRM_COPY_FROM_USER_IOCTL(agp, (drm_via_agp_t __user *) data,
sizeof(agp));
mutex_lock(&dev->struct_mutex);
ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_AGP, 0,
agp.size >> VIA_MM_ALIGN_SHIFT);
if (ret) {
DRM_ERROR("AGP memory manager initialisation error\n");
mutex_unlock(&dev->struct_mutex);
return ret;
}
dev_priv->agp_initialized = 1;
dev_priv->agp_offset = agp.offset;
mutex_unlock(&dev->struct_mutex);
DRM_DEBUG("offset = %u, size = %u", agp.offset, agp.size);
return 0;
}
int via_fb_init(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_via_fb_t fb;
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
int ret;
DRM_COPY_FROM_USER_IOCTL(fb, (drm_via_fb_t __user *) data, sizeof(fb));
mutex_lock(&dev->struct_mutex);
ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_VIDEO, 0,
fb.size >> VIA_MM_ALIGN_SHIFT);
if (ret) {
DRM_ERROR("VRAM memory manager initialisation error\n");
mutex_unlock(&dev->struct_mutex);
return ret;
}
dev_priv->vram_initialized = 1;
dev_priv->vram_offset = fb.offset;
mutex_unlock(&dev->struct_mutex);
DRM_DEBUG("offset = %u, size = %u", fb.offset, fb.size);
return 0;
}
int via_final_context(struct drm_device *dev, int context)
{
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
via_release_futex(dev_priv, context);
/* Linux specific until context tracking code gets ported to BSD */
/* Last context, perform cleanup */
if (dev->ctx_count == 1 && dev->dev_private) {
DRM_DEBUG("Last Context\n");
if (dev->irq)
drm_irq_uninstall(dev);
via_cleanup_futex(dev_priv);
via_do_cleanup_map(dev);
}
return 1;
}
void via_lastclose(struct drm_device *dev)
{
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
if (!dev_priv)
return;
mutex_lock(&dev->struct_mutex);
drm_sman_cleanup(&dev_priv->sman);
dev_priv->vram_initialized = 0;
dev_priv->agp_initialized = 0;
mutex_unlock(&dev->struct_mutex);
}
int via_mem_alloc(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_via_mem_t mem;
int retval = 0;
struct drm_memblock_item *item;
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
unsigned long tmpSize;
DRM_COPY_FROM_USER_IOCTL(mem, (drm_via_mem_t __user *) data,
sizeof(mem));
if (mem.type > VIA_MEM_AGP) {
DRM_ERROR("Unknown memory type allocation\n");
return DRM_ERR(EINVAL);
}
mutex_lock(&dev->struct_mutex);
if (0 == ((mem.type == VIA_MEM_VIDEO) ? dev_priv->vram_initialized :
dev_priv->agp_initialized)) {
DRM_ERROR
("Attempt to allocate from uninitialized memory manager.\n");
mutex_unlock(&dev->struct_mutex);
return DRM_ERR(EINVAL);
}
tmpSize = (mem.size + VIA_MM_ALIGN_MASK) >> VIA_MM_ALIGN_SHIFT;
item = drm_sman_alloc(&dev_priv->sman, mem.type, tmpSize, 0,
(unsigned long)priv);
mutex_unlock(&dev->struct_mutex);
if (item) {
mem.offset = ((mem.type == VIA_MEM_VIDEO) ?
dev_priv->vram_offset : dev_priv->agp_offset) +
(item->mm->
offset(item->mm, item->mm_info) << VIA_MM_ALIGN_SHIFT);
mem.index = item->user_hash.key;
} else {
mem.offset = 0;
mem.size = 0;
mem.index = 0;
DRM_DEBUG("Video memory allocation failed\n");
retval = DRM_ERR(ENOMEM);
}
DRM_COPY_TO_USER_IOCTL((drm_via_mem_t __user *) data, mem, sizeof(mem));
return retval;
}
int via_mem_free(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_via_private_t *dev_priv = dev->dev_private;
drm_via_mem_t mem;
int ret;
DRM_COPY_FROM_USER_IOCTL(mem, (drm_via_mem_t __user *) data,
sizeof(mem));
mutex_lock(&dev->struct_mutex);
ret = drm_sman_free_key(&dev_priv->sman, mem.index);
mutex_unlock(&dev->struct_mutex);
DRM_DEBUG("free = 0x%lx\n", mem.index);
return ret;
}
void via_reclaim_buffers_locked(struct drm_device * dev, struct file *filp)
{
drm_via_private_t *dev_priv = dev->dev_private;
struct drm_file *priv = filp->private_data;
mutex_lock(&dev->struct_mutex);
if (drm_sman_owner_clean(&dev_priv->sman, (unsigned long)priv)) {
mutex_unlock(&dev->struct_mutex);
return;
}
if (dev->driver->dma_quiescent) {
dev->driver->dma_quiescent(dev);
}
drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)priv);
mutex_unlock(&dev->struct_mutex);
return;
}
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