kolibrios/drivers/video/drm/radeon/tracker/bitmap.c

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#include <drmP.h>
#include <drm.h>
#include "radeon_drm.h"
#include "../radeon.h"
#include "../display.h"
extern struct radeon_device *main_device;
typedef struct
{
kobj_t header;
int width;
int height;
int stride;
uint64_t gaddr;
void *uaddr;
struct radeon_bo *robj;
}bitmap_t;
int create_bitmap(bitmap_t **pbitmap, int width, int height)
{
size_t size;
size_t pitch;
bitmap_t *bitmap;
uint64_t gaddr;
void *uaddr;
struct radeon_device *rdev = main_device;
struct radeon_bo *sobj = NULL;
int r;
bitmap = CreateObject(GetPid(), sizeof(bitmap_t));
if( bitmap == NULL)
{
*pbitmap = NULL;
return -1;
}
pitch = radeon_align_pitch(rdev, width, 32, false) * 4;
size = pitch * height;
r = radeon_bo_create(rdev, size, PAGE_SIZE, true,
RADEON_GEM_DOMAIN_GTT, &sobj);
if (r) {
goto fail;
}
r = radeon_bo_reserve(sobj, false);
if (unlikely(r != 0))
goto fail;
r = radeon_bo_pin(sobj, RADEON_GEM_DOMAIN_GTT, &gaddr);
if (r) {
goto fail;
}
r = radeon_bo_user_map(sobj, &uaddr);
if (r) {
goto fail;
}
bitmap->width = width;
bitmap->height = height;
bitmap->stride = pitch;
bitmap->gaddr = gaddr;
bitmap->uaddr = uaddr;
bitmap->robj = sobj;
*pbitmap = bitmap;
return 0;
fail:
DestroyObject(bitmap);
return -1;
};