/**************************************************************************
*
* 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 COPYRIGHT HOLDERS, AUTHORS 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.
*
*
**************************************************************************/
/*
* Authors:
* Thomas Hellström <thomas-at-tungstengraphics-dot-com>
*/
#include "drmP.h"
#include "sis_drm.h"
#include "sis_drv.h"
#include <video/sisfb.h>
#define VIDEO_TYPE 0
#define AGP_TYPE 1
#if defined(CONFIG_FB_SIS)
/* fb management via fb device */
#define SIS_MM_ALIGN_SHIFT 0
#define SIS_MM_ALIGN_MASK 0
static void *sis_sman_mm_allocate(void *private, unsigned long size,
unsigned alignment)
{
struct sis_memreq req;
req.size = size;
sis_malloc(&req);
if (req.size == 0)
return NULL;
else
return (void *)~req.offset;
}
static void sis_sman_mm_free(void *private, void *ref)
{
sis_free(~((unsigned long)ref));
}
static void sis_sman_mm_destroy(void *private)
{
;
}
static unsigned long sis_sman_mm_offset(void *private, void *ref)
{
return ~((unsigned long)ref);
}
#else /* CONFIG_FB_SIS */
#define SIS_MM_ALIGN_SHIFT 4
#define SIS_MM_ALIGN_MASK ( (1 << SIS_MM_ALIGN_SHIFT) - 1)
#endif /* CONFIG_FB_SIS */
static int sis_fb_init(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sis_fb_t fb;
int ret;
DRM_COPY_FROM_USER_IOCTL(fb, (drm_sis_fb_t __user *) data, sizeof(fb));
mutex_lock(&dev->struct_mutex);
#if defined(CONFIG_FB_SIS)
{
drm_sman_mm_t sman_mm;
sman_mm.private = (void *)0xFFFFFFFF;
sman_mm.allocate = sis_sman_mm_allocate;
sman_mm.free = sis_sman_mm_free;
sman_mm.destroy = sis_sman_mm_destroy;
sman_mm.offset = sis_sman_mm_offset;
ret =
drm_sman_set_manager(&dev_priv->sman, VIDEO_TYPE, &sman_mm);
}
#else
ret = drm_sman_set_range(&dev_priv->sman, VIDEO_TYPE, 0,
fb.size >> SIS_MM_ALIGN_SHIFT);
#endif
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;
}
static int sis_drm_alloc(struct drm_device *dev, struct drm_file * priv,
unsigned long data, int pool)
{
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sis_mem_t __user *argp = (drm_sis_mem_t __user *) data;
drm_sis_mem_t mem;
int retval = 0;
struct drm_memblock_item *item;
DRM_COPY_FROM_USER_IOCTL(mem, argp, sizeof(mem));
mutex_lock(&dev->struct_mutex);
if (0 == ((pool == 0) ? dev_priv->vram_initialized :
dev_priv->agp_initialized)) {
DRM_ERROR
("Attempt to allocate from uninitialized memory manager.\n");
return DRM_ERR(EINVAL);
}
mem.size = (mem.size + SIS_MM_ALIGN_MASK) >> SIS_MM_ALIGN_SHIFT;
item = drm_sman_alloc(&dev_priv->sman, pool, mem.size, 0,
(unsigned long)priv);
mutex_unlock(&dev->struct_mutex);
if (item) {
mem.offset = ((pool == 0) ?
dev_priv->vram_offset : dev_priv->agp_offset) +
(item->mm->
offset(item->mm, item->mm_info) << SIS_MM_ALIGN_SHIFT);
mem.free = item->user_hash.key;
mem.size = mem.size << SIS_MM_ALIGN_SHIFT;
} else {
mem.offset = 0;
mem.size = 0;
mem.free = 0;
retval = DRM_ERR(ENOMEM);
}
DRM_COPY_TO_USER_IOCTL(argp, mem, sizeof(mem));
DRM_DEBUG("alloc %d, size = %d, offset = %d\n", pool, mem.size,
mem.offset);
return retval;
}
static int sis_drm_free(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sis_mem_t mem;
int ret;
DRM_COPY_FROM_USER_IOCTL(mem, (drm_sis_mem_t __user *) data,
sizeof(mem));
mutex_lock(&dev->struct_mutex);
ret = drm_sman_free_key(&dev_priv->sman, mem.free);
mutex_unlock(&dev->struct_mutex);
DRM_DEBUG("free = 0x%lx\n", mem.free);
return ret;
}
static int sis_fb_alloc(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
return sis_drm_alloc(dev, priv, data, VIDEO_TYPE);
}
static int sis_ioctl_agp_init(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
drm_sis_private_t *dev_priv = dev->dev_private;
drm_sis_agp_t agp;
int ret;
dev_priv = dev->dev_private;
DRM_COPY_FROM_USER_IOCTL(agp, (drm_sis_agp_t __user *) data,
sizeof(agp));
mutex_lock(&dev->struct_mutex);
ret = drm_sman_set_range(&dev_priv->sman, AGP_TYPE, 0,
agp.size >> SIS_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;
}
static int sis_ioctl_agp_alloc(DRM_IOCTL_ARGS)
{
DRM_DEVICE;
return sis_drm_alloc(dev, priv, data, AGP_TYPE);
}
static drm_local_map_t *sis_reg_init(struct drm_device *dev)
{
struct drm_map_list *entry;
drm_local_map_t *map;
list_for_each_entry(entry, &dev->maplist, head) {
map = entry->map;
if (!map)
continue;
if (map->type == _DRM_REGISTERS) {
return map;
}
}
return NULL;
}
int sis_idle(struct drm_device *dev)
{
drm_sis_private_t *dev_priv = dev->dev_private;
uint32_t idle_reg;
unsigned long end;
int i;
if (dev_priv->idle_fault)
return 0;
if (dev_priv->mmio == NULL) {
dev_priv->mmio = sis_reg_init(dev);
if (dev_priv->mmio == NULL) {
DRM_ERROR("Could not find register map.\n");
return 0;
}
}
/*
* Implement a device switch here if needed
*/
if (dev_priv->chipset != SIS_CHIP_315)
return 0;
/*
* Timeout after 3 seconds. We cannot use DRM_WAIT_ON here
* because its polling frequency is too low.
*/
end = jiffies + (DRM_HZ * 3);
for (i=0; i<4; ++i) {
do {
idle_reg = SIS_READ(0x85cc);
} while ( !time_after_eq(jiffies, end) &&
((idle_reg & 0x80000000) != 0x80000000));
}
if (time_after_eq(jiffies, end)) {
DRM_ERROR("Graphics engine idle timeout. "
"Disabling idle check\n");
dev_priv->idle_fault = 1;
}
/*
* The caller never sees an error code. It gets trapped
* in libdrm.
*/
return 0;
}
void sis_lastclose(struct drm_device *dev)
{
drm_sis_private_t *dev_priv = 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;
dev_priv->mmio = NULL;
mutex_unlock(&dev->struct_mutex);
}
void sis_reclaim_buffers_locked(struct drm_device * dev, struct file *filp)
{
drm_sis_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;
}
drm_ioctl_desc_t sis_ioctls[] = {
[DRM_IOCTL_NR(DRM_SIS_FB_ALLOC)] = {sis_fb_alloc, DRM_AUTH},
[DRM_IOCTL_NR(DRM_SIS_FB_FREE)] = {sis_drm_free, DRM_AUTH},
[DRM_IOCTL_NR(DRM_SIS_AGP_INIT)] =
{sis_ioctl_agp_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY},
[DRM_IOCTL_NR(DRM_SIS_AGP_ALLOC)] = {sis_ioctl_agp_alloc, DRM_AUTH},
[DRM_IOCTL_NR(DRM_SIS_AGP_FREE)] = {sis_drm_free, DRM_AUTH},
[DRM_IOCTL_NR(DRM_SIS_FB_INIT)] =
{sis_fb_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY}
};
int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);
