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drm: updated DRM map patch for 32/64 bit systems 

I basically combined Paul's patches with additions that I had made
for PCI scatter gather.
I also tried more carefully to avoid problems with the same token
assigned multiple times while trying to use the base address in the
token if possible to gain as much backward compatibility as possible
for broken DRI clients.

From: Paul Mackerras <paulus@samba.org> and Egbert Eich <eich@suse.de>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Dave Airlie 2005-08-05 22:11:22 +10:00 committed by Dave Airlie
parent c73681e77b
commit d1f2b55ad2
15 changed files with 177 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/char/drm/drmP.h
View File

@ -539,6 +539,7 @@ typedef struct drm_dma_handle {
typedef struct drm_map_list {
struct list_head head; /**< list head */
drm_map_t *map; /**< mapping */
unsigned int user_token;
} drm_map_list_t;
typedef drm_map_t drm_local_map_t;
@ -759,6 +760,7 @@ typedef struct drm_device {
struct drm_driver *driver;
drm_local_map_t *agp_buffer_map;
unsigned int agp_buffer_token;
drm_head_t primary; /**< primary screen head */
} drm_device_t;
@ -1048,16 +1050,12 @@ static __inline__ void drm_core_ioremapfree(struct drm_map *map, struct drm_devi
drm_ioremapfree( map->handle, map->size, dev );
}
static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev, unsigned long offset)
static __inline__ struct drm_map *drm_core_findmap(struct drm_device *dev, unsigned int token)
{
struct list_head *_list;
list_for_each( _list, &dev->maplist->head ) {
drm_map_list_t *_entry = list_entry( _list, drm_map_list_t, head );
if ( _entry->map &&
_entry->map->offset == offset ) {
drm_map_list_t *_entry;
list_for_each_entry(_entry, &dev->maplist->head, head)
if (_entry->user_token == token)
return _entry->map;
}
}
return NULL;
}

81
drivers/char/drm/drm_bufs.c
View File

@ -64,13 +64,41 @@ static drm_local_map_t *drm_find_matching_map(drm_device_t *dev,
return NULL;
}
#ifdef CONFIG_COMPAT
/*
* Used to allocate 32-bit handles for _DRM_SHM regions
* The 0x10000000 value is chosen to be out of the way of
* FB/register and GART physical addresses.
* Used to allocate 32-bit handles for mappings.
*/
static unsigned int map32_handle = 0x10000000;
#define START_RANGE 0x10000000
#define END_RANGE 0x40000000
#ifdef _LP64
static __inline__ unsigned int HandleID(unsigned long lhandle, drm_device_t *dev)
{
static unsigned int map32_handle = START_RANGE;
unsigned int hash;
if (lhandle & 0xffffffff00000000) {
hash = map32_handle;
map32_handle += PAGE_SIZE;
if (map32_handle > END_RANGE)
map32_handle = START_RANGE;
} else
hash = lhandle;
while (1) {
drm_map_list_t *_entry;
list_for_each_entry(_entry, &dev->maplist->head,head) {
if (_entry->user_token == hash)
break;
}
if (&_entry->head == &dev->maplist->head)
return hash;
hash += PAGE_SIZE;
map32_handle += PAGE_SIZE;
}
}
#else
# define HandleID(x,dev) (unsigned int)(x)
#endif
/**
@ -198,7 +226,7 @@ int drm_addmap(drm_device_t * dev, unsigned int offset,
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
return -EINVAL;
}
map->offset += dev->sg->handle;
map->offset += (unsigned long)dev->sg->virtual;
break;
case _DRM_CONSISTENT:
/* dma_addr_t is 64bit on i386 with CONFIG_HIGHMEM64G,
@ -229,12 +257,11 @@ int drm_addmap(drm_device_t * dev, unsigned int offset,
down(&dev->struct_sem);
list_add(&list->head, &dev->maplist->head);
#ifdef CONFIG_COMPAT
/* Assign a 32-bit handle for _DRM_SHM mappings */
/* Assign a 32-bit handle */
/* We do it here so that dev->struct_sem protects the increment */
if (map->type == _DRM_SHM)
map->offset = map32_handle += PAGE_SIZE;
#endif
list->user_token = HandleID(map->type==_DRM_SHM
? (unsigned long)map->handle
: map->offset, dev);
up(&dev->struct_sem);
*map_ptr = map;
@ -251,6 +278,7 @@ int drm_addmap_ioctl(struct inode *inode, struct file *filp,
drm_map_t *map_ptr;
drm_map_t __user *argp = (void __user *)arg;
int err;
unsigned long handle = 0;
if (!(filp->f_mode & 3))
return -EACCES; /* Require read/write */
@ -259,22 +287,29 @@ int drm_addmap_ioctl(struct inode *inode, struct file *filp,
return -EFAULT;
}
err = drm_addmap( dev, map.offset, map.size, map.type, map.flags,
&map_ptr );
err = drm_addmap(dev, map.offset, map.size, map.type, map.flags,
&map_ptr);
if (err) {
return err;
}
if (copy_to_user(argp, map_ptr, sizeof(*map_ptr)))
return -EFAULT;
if (map_ptr->type != _DRM_SHM) {
if (copy_to_user(&argp->handle, &map_ptr->offset,
sizeof(map_ptr->offset)))
{
drm_map_list_t *_entry;
list_for_each_entry(_entry, &dev->maplist->head, head) {
if (_entry->map == map_ptr)
handle = _entry->user_token;
}
if (!handle)
return -EFAULT;
}
if (copy_to_user(argp, map_ptr, sizeof(*map_ptr)))
return -EFAULT;
if (put_user(handle, &argp->handle))
return -EFAULT;
return 0;
}
}
/**
@ -388,7 +423,7 @@ int drm_rmmap_ioctl(struct inode *inode, struct file *filp,
drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
if (r_list->map &&
r_list->map->handle == request.handle &&
r_list->user_token == (unsigned long) request.handle &&
r_list->map->flags & _DRM_REMOVABLE) {
map = r_list->map;
break;
@ -939,7 +974,8 @@ static int drm_addbufs_sg(drm_device_t *dev, drm_buf_desc_t *request)
buf->offset = (dma->byte_count + offset);
buf->bus_address = agp_offset + offset;
buf->address = (void *)(agp_offset + offset + dev->sg->handle);
buf->address = (void *)(agp_offset + offset
+ (unsigned long)dev->sg->virtual);
buf->next = NULL;
buf->waiting = 0;
buf->pending = 0;
@ -1456,6 +1492,7 @@ int drm_mapbufs( struct inode *inode, struct file *filp,
|| (drm_core_check_feature(dev, DRIVER_FB_DMA)
&& (dma->flags & _DRM_DMA_USE_FB))) {
drm_map_t *map = dev->agp_buffer_map;
unsigned long token = dev->agp_buffer_token;
if ( !map ) {
retcode = -EINVAL;
@ -1470,7 +1507,7 @@ int drm_mapbufs( struct inode *inode, struct file *filp,
virtual = do_mmap( filp, 0, map->size,
PROT_READ | PROT_WRITE,
MAP_SHARED,
(unsigned long)map->offset );
token );
#if LINUX_VERSION_CODE <= 0x020402
up( &current->mm->mmap_sem );
#else

15
drivers/char/drm/drm_context.c
View File

@ -212,6 +212,7 @@ int drm_getsareactx(struct inode *inode, struct file *filp,
drm_ctx_priv_map_t __user *argp = (void __user *)arg;
drm_ctx_priv_map_t request;
drm_map_t *map;
drm_map_list_t *_entry;
if (copy_from_user(&request, argp, sizeof(request)))
return -EFAULT;
@ -225,7 +226,17 @@ int drm_getsareactx(struct inode *inode, struct file *filp,
map = dev->context_sareas[request.ctx_id];
up(&dev->struct_sem);
request.handle = (void *) map->offset;
request.handle = 0;
list_for_each_entry(_entry, &dev->maplist->head,head) {
if (_entry->map == map) {
request.handle = (void *)(unsigned long)_entry->user_token;
break;
}
}
if (request.handle == 0)
return -EINVAL;
if (copy_to_user(argp, &request, sizeof(request)))
return -EFAULT;
return 0;
@ -262,7 +273,7 @@ int drm_setsareactx(struct inode *inode, struct file *filp,
list_for_each(list, &dev->maplist->head) {
r_list = list_entry(list, drm_map_list_t, head);
if (r_list->map
&& r_list->map->offset == (unsigned long) request.handle)
&& r_list->user_token == (unsigned long) request.handle)
goto found;
}
bad:

2
drivers/char/drm/drm_ioctl.c
View File

@ -208,7 +208,7 @@ int drm_getmap( struct inode *inode, struct file *filp,
map.size = r_list->map->size;
map.type = r_list->map->type;
map.flags = r_list->map->flags;
map.handle = r_list->map->handle;
map.handle = (void *)(unsigned long) r_list->user_token;
map.mtrr = r_list->map->mtrr;
up(&dev->struct_sem);

4
drivers/char/drm/drm_proc.c
View File

@ -235,13 +235,13 @@ static int drm__vm_info(char *buf, char **start, off_t offset, int request,
type = "??";
else
type = types[map->type];
DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08lx ",
DRM_PROC_PRINT("%4d 0x%08lx 0x%08lx %4.4s 0x%02x 0x%08x ",
i,
map->offset,
map->size,
type,
map->flags,
(unsigned long)map->handle);
r_list->user_token);
if (map->mtrr < 0) {
DRM_PROC_PRINT("none\n");
} else {

11
drivers/char/drm/drm_scatter.c
View File

@ -61,6 +61,12 @@ void drm_sg_cleanup( drm_sg_mem_t *entry )
DRM_MEM_SGLISTS );
}
#ifdef _LP64
# define ScatterHandle(x) (unsigned int)((x >> 32) + (x & ((1L << 32) - 1)))
#else
# define ScatterHandle(x) (unsigned int)(x)
#endif
int drm_sg_alloc( struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg )
{
@ -133,12 +139,13 @@ int drm_sg_alloc( struct inode *inode, struct file *filp,
*/
memset( entry->virtual, 0, pages << PAGE_SHIFT );
entry->handle = (unsigned long)entry->virtual;
entry->handle = ScatterHandle((unsigned long)entry->virtual);
DRM_DEBUG( "sg alloc handle = %08lx\n", entry->handle );
DRM_DEBUG( "sg alloc virtual = %p\n", entry->virtual );
for ( i = entry->handle, j = 0 ; j < pages ; i += PAGE_SIZE, j++ ) {
for (i = (unsigned long)entry->virtual, j = 0; j < pages;
i += PAGE_SIZE, j++) {
entry->pagelist[j] = vmalloc_to_page((void *)i);
if (!entry->pagelist[j])
goto failed;

20
drivers/char/drm/drm_vm.c
View File

@ -73,12 +73,13 @@ static __inline__ struct page *drm_do_vm_nopage(struct vm_area_struct *vma,
r_list = list_entry(list, drm_map_list_t, head);
map = r_list->map;
if (!map) continue;
if (map->offset == VM_OFFSET(vma)) break;
if (r_list->user_token == VM_OFFSET(vma))
break;
}
if (map && map->type == _DRM_AGP) {
unsigned long offset = address - vma->vm_start;
unsigned long baddr = VM_OFFSET(vma) + offset;
unsigned long baddr = map->offset + offset;
struct drm_agp_mem *agpmem;
struct page *page;
@ -304,7 +305,7 @@ static __inline__ struct page *drm_do_vm_sg_nopage(struct vm_area_struct *vma,
offset = address - vma->vm_start;
map_offset = map->offset - dev->sg->handle;
map_offset = map->offset - (unsigned long)dev->sg->virtual;
page_offset = (offset >> PAGE_SHIFT) + (map_offset >> PAGE_SHIFT);
page = entry->pagelist[page_offset];
get_page(page);
@ -568,13 +569,12 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
for performance, even if the list was a
bit longer. */
list_for_each(list, &dev->maplist->head) {
unsigned long off;
r_list = list_entry(list, drm_map_list_t, head);
map = r_list->map;
if (!map) continue;
off = dev->driver->get_map_ofs(map);
if (off == VM_OFFSET(vma)) break;
if (r_list->user_token == VM_OFFSET(vma))
break;
}
if (!map || ((map->flags&_DRM_RESTRICTED) && !capable(CAP_SYS_ADMIN)))
@ -613,7 +613,7 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
/* fall through to _DRM_FRAME_BUFFER... */
case _DRM_FRAME_BUFFER:
case _DRM_REGISTERS:
if (VM_OFFSET(vma) >= __pa(high_memory)) {
if (map->offset >= __pa(high_memory)) {
#if defined(__i386__) || defined(__x86_64__)
if (boot_cpu_data.x86 > 3 && map->type != _DRM_AGP) {
pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
@ -636,12 +636,12 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
offset = dev->driver->get_reg_ofs(dev);
#ifdef __sparc__
if (io_remap_pfn_range(DRM_RPR_ARG(vma) vma->vm_start,
(VM_OFFSET(vma) + offset) >> PAGE_SHIFT,
(map->offset + offset) >> PAGE_SHIFT,
vma->vm_end - vma->vm_start,
vma->vm_page_prot))
#else
if (io_remap_pfn_range(vma, vma->vm_start,
(VM_OFFSET(vma) + offset) >> PAGE_SHIFT,
(map->offset + offset) >> PAGE_SHIFT,
vma->vm_end - vma->vm_start,
vma->vm_page_prot))
#endif
@ -649,7 +649,7 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
DRM_DEBUG(" Type = %d; start = 0x%lx, end = 0x%lx,"
" offset = 0x%lx\n",
map->type,
vma->vm_start, vma->vm_end, VM_OFFSET(vma) + offset);
vma->vm_start, vma->vm_end, map->offset + offset);
vma->vm_ops = &drm_vm_ops;
break;
case _DRM_SHM:

5
drivers/char/drm/ffb_drv.c
View File

@ -152,14 +152,11 @@ static drm_map_t *ffb_find_map(struct file *filp, unsigned long off)
return NULL;
list_for_each(list, &dev->maplist->head) {
unsigned long uoff;
r_list = (drm_map_list_t *)list;
map = r_list->map;
if (!map)
continue;
uoff = (map->offset & 0xffffffff);
if (uoff == off)
if (r_list->user_token == off)
return map;
}

1
drivers/char/drm/i810_dma.c
View File

@ -351,6 +351,7 @@ static int i810_dma_initialize(drm_device_t *dev,
DRM_ERROR("can not find mmio map!\n");
return -EINVAL;
}
dev->agp_buffer_token = init->buffers_offset;
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if (!dev->agp_buffer_map) {
dev->dev_private = (void *)dev_priv;

1
drivers/char/drm/i830_dma.c
View File

@ -358,6 +358,7 @@ static int i830_dma_initialize(drm_device_t *dev,
DRM_ERROR("can not find mmio map!\n");
return -EINVAL;
}
dev->agp_buffer_token = init->buffers_offset;
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if(!dev->agp_buffer_map) {
dev->dev_private = (void *)dev_priv;

1
drivers/char/drm/mga_dma.c
View File

@ -825,6 +825,7 @@ static int mga_do_init_dma( drm_device_t *dev, drm_mga_init_t *init )
DRM_ERROR("failed to find primary dma region!\n");
return DRM_ERR(EINVAL);
}
dev->agp_buffer_token = init->buffers_offset;
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if (!dev->agp_buffer_map) {
DRM_ERROR("failed to find dma buffer region!\n");

2
drivers/char/drm/mga_drm.h
View File

@ -312,7 +312,7 @@ typedef struct drm_mga_dma_bootstrap {
* an IOMMU) is being used for "AGP" textures.
*/
/*@{*/
drm_handle_t texture_handle; /**< Handle used to map AGP textures. */
unsigned long texture_handle; /**< Handle used to map AGP textures. */
uint32_t texture_size; /**< Size of the AGP texture region. */
/*@}*/

67
drivers/char/drm/mga_ioc32.c
View File

@ -129,9 +129,76 @@ static int compat_mga_getparam(struct file *file, unsigned int cmd,
DRM_IOCTL_MGA_GETPARAM, (unsigned long)getparam);
}
typedef struct drm_mga_drm_bootstrap32 {
u32 texture_handle;
u32 texture_size;
u32 primary_size;
u32 secondary_bin_count;
u32 secondary_bin_size;
u32 agp_mode;
u8 agp_size;
} drm_mga_dma_bootstrap32_t;
static int compat_mga_dma_bootstrap(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_mga_dma_bootstrap32_t dma_bootstrap32;
drm_mga_dma_bootstrap_t __user *dma_bootstrap;
int err;
if (copy_from_user(&dma_bootstrap32, (void __user *)arg,
sizeof(dma_bootstrap32)))
return -EFAULT;
dma_bootstrap = compat_alloc_user_space(sizeof(*dma_bootstrap));
if (!access_ok(VERIFY_WRITE, dma_bootstrap, sizeof(*dma_bootstrap))
|| __put_user(dma_bootstrap32.texture_handle,
&dma_bootstrap->texture_handle)
|| __put_user(dma_bootstrap32.texture_size,
&dma_bootstrap->texture_size)
|| __put_user(dma_bootstrap32.primary_size,
&dma_bootstrap->primary_size)
|| __put_user(dma_bootstrap32.secondary_bin_count,
&dma_bootstrap->secondary_bin_count)
|| __put_user(dma_bootstrap32.secondary_bin_size,
&dma_bootstrap->secondary_bin_size)
|| __put_user(dma_bootstrap32.agp_mode, &dma_bootstrap->agp_mode)
|| __put_user(dma_bootstrap32.agp_size, &dma_bootstrap->agp_size))
return -EFAULT;
err = drm_ioctl(file->f_dentry->d_inode, file,
DRM_IOCTL_MGA_DMA_BOOTSTRAP,
(unsigned long)dma_bootstrap);
if (err)
return err;
if (__get_user(dma_bootstrap32.texture_handle,
&dma_bootstrap->texture_handle)
|| __get_user(dma_bootstrap32.texture_size,
&dma_bootstrap->texture_size)
|| __get_user(dma_bootstrap32.primary_size,
&dma_bootstrap->primary_size)
|| __get_user(dma_bootstrap32.secondary_bin_count,
&dma_bootstrap->secondary_bin_count)
|| __get_user(dma_bootstrap32.secondary_bin_size,
&dma_bootstrap->secondary_bin_size)
|| __get_user(dma_bootstrap32.agp_mode,
&dma_bootstrap->agp_mode)
|| __get_user(dma_bootstrap32.agp_size,
&dma_bootstrap->agp_size))
return -EFAULT;
if (copy_to_user((void __user *)arg, &dma_bootstrap32,
sizeof(dma_bootstrap32)))
return -EFAULT;
return 0;
}
drm_ioctl_compat_t *mga_compat_ioctls[] = {
[DRM_MGA_INIT] = compat_mga_init,
[DRM_MGA_GETPARAM] = compat_mga_getparam,
[DRM_MGA_DMA_BOOTSTRAP] = compat_mga_dma_bootstrap,
};
/**

6
drivers/char/drm/r128_cce.c
View File

@ -326,7 +326,8 @@ static void r128_cce_init_ring_buffer( drm_device_t *dev,
ring_start = dev_priv->cce_ring->offset - dev->agp->base;
else
#endif
ring_start = dev_priv->cce_ring->offset - dev->sg->handle;
ring_start = dev_priv->cce_ring->offset -
(unsigned long)dev->sg->virtual;
R128_WRITE( R128_PM4_BUFFER_OFFSET, ring_start | R128_AGP_OFFSET );
@ -487,6 +488,7 @@ static int r128_do_init_cce( drm_device_t *dev, drm_r128_init_t *init )
r128_do_cleanup_cce( dev );
return DRM_ERR(EINVAL);
}
dev->agp_buffer_token = init->buffers_offset;
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if(!dev->agp_buffer_map) {
DRM_ERROR("could not find dma buffer region!\n");
@ -537,7 +539,7 @@ static int r128_do_init_cce( drm_device_t *dev, drm_r128_init_t *init )
dev_priv->cce_buffers_offset = dev->agp->base;
else
#endif
dev_priv->cce_buffers_offset = dev->sg->handle;
dev_priv->cce_buffers_offset = (unsigned long)dev->sg->virtual;
dev_priv->ring.start = (u32 *)dev_priv->cce_ring->handle;
dev_priv->ring.end = ((u32 *)dev_priv->cce_ring->handle

1
drivers/char/drm/radeon_cp.c
View File

@ -1407,6 +1407,7 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
radeon_do_cleanup_cp(dev);
return DRM_ERR(EINVAL);
}
dev->agp_buffer_token = init->buffers_offset;
dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
if(!dev->agp_buffer_map) {
DRM_ERROR("could not find dma buffer region!\n");