int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
uint32_t handle, uint64_t *offset)
{
struct drm_gem_object *obj;
struct bochs_bo *bo;
obj = drm_gem_object_lookup(file, handle);
if (obj == NULL)
return -ENOENT;
bo = gem_to_bochs_bo(obj);
*offset = bochs_bo_mmap_offset(bo);
drm_gem_object_unreference_unlocked(obj);
return 0;
}
int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev,
uint32_t handle, uint64_t *offset)
{
struct drm_gem_object *obj;
int ret;
struct bochs_bo *bo;
mutex_lock(&dev->struct_mutex);
obj = drm_gem_object_lookup(dev, file, handle);
if (obj == NULL) {
ret = -ENOENT;
goto out_unlock;
}
bo = gem_to_bochs_bo(obj);
*offset = bochs_bo_mmap_offset(bo);
drm_gem_object_unreference(obj);
ret = 0;
out_unlock:
mutex_unlock(&dev->struct_mutex);
return ret;
}
static int bochsfb_create(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct bochs_device *bochs =
container_of(helper, struct bochs_device, fb.helper);
struct drm_device *dev = bochs->dev;
struct fb_info *info;
struct drm_framebuffer *fb;
struct drm_mode_fb_cmd2 mode_cmd;
struct device *device = &dev->pdev->dev;
struct drm_gem_object *gobj = NULL;
struct bochs_bo *bo = NULL;
int size, ret;
if (sizes->surface_bpp != 32)
return -EINVAL;
mode_cmd.width = sizes->surface_width;
mode_cmd.height = sizes->surface_height;
mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7) / 8);
mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
sizes->surface_depth);
size = mode_cmd.pitches[0] * mode_cmd.height;
/* alloc, pin & map bo */
ret = bochsfb_create_object(bochs, &mode_cmd, &gobj);
if (ret) {
DRM_ERROR("failed to create fbcon backing object %d\n", ret);
return ret;
}
bo = gem_to_bochs_bo(gobj);
ret = ttm_bo_reserve(&bo->bo, true, false, false, 0);
if (ret)
return ret;
ret = bochs_bo_pin(bo, TTM_PL_FLAG_VRAM, NULL);
if (ret) {
DRM_ERROR("failed to pin fbcon\n");
ttm_bo_unreserve(&bo->bo);
return ret;
}
ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages,
&bo->kmap);
if (ret) {
DRM_ERROR("failed to kmap fbcon\n");
ttm_bo_unreserve(&bo->bo);
return ret;
}
ttm_bo_unreserve(&bo->bo);
/* init fb device */
info = framebuffer_alloc(0, device);
if (info == NULL)
return -ENOMEM;
info->par = &bochs->fb.helper;
ret = bochs_framebuffer_init(bochs->dev, &bochs->fb.gfb, &mode_cmd, gobj);
if (ret)
return ret;
bochs->fb.size = size;
/* setup helper */
fb = &bochs->fb.gfb.base;
bochs->fb.helper.fb = fb;
bochs->fb.helper.fbdev = info;
strcpy(info->fix.id, "bochsdrmfb");
info->flags = FBINFO_DEFAULT;
info->fbops = &bochsfb_ops;
drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
drm_fb_helper_fill_var(info, &bochs->fb.helper, sizes->fb_width,
sizes->fb_height);
info->screen_base = bo->kmap.virtual;
info->screen_size = size;
#if 0
/* FIXME: get this right for mmap(/dev/fb0) */
info->fix.smem_start = bochs_bo_mmap_offset(bo);
info->fix.smem_len = size;
#endif
ret = fb_alloc_cmap(&info->cmap, 256, 0);
if (ret) {
DRM_ERROR("%s: can't allocate color map\n", info->fix.id);
return -ENOMEM;
}
return 0;
}
