add getfb ioctl

libdrm/xf86drmMode.c

@@ -215,53 +215,35 @@ int drmModeRmFB(int fd, uint32_t bufferId)
 	return ioctl(fd, DRM_IOCTL_MODE_RMFB, bufferId);
 }
 
+drmModeFrameBufferPtr drmModeGetFB(int fd, uint32_t buf)
+{
+	struct drm_mode_fb_cmd info;
+	drmModeFrameBufferPtr r;
+
+	info.buffer_id = buf;
+
+	if (ioctl(fd, DRM_IOCTL_MODE_GETFB, &info))
+		return NULL;
+
+	if (!(r = drmMalloc(sizeof(*r))))
+		return NULL;
+
+	r->buffer_id = info.buffer_id;
+	r->width = info.width;
+	r->height = info.height;
+	r->pitch = info.pitch;
+	r->bpp = info.bpp;
+	r->handle = info.handle;
+	r->depth = info.depth;
+
+	return r;
+}
 #if 0
 int drmModeForceProbe(int fd, uint32_t outputId)
 {
 	/* TODO impl/keep? */
 }
 
-drmModeFrameBufferPtr drmModeGetFrameBuffer(int fd, uint32_t buf)
-{
-//	struct drm_mode_fb_cmd info;
-	drmModeFrameBufferPtr r;
-
-	//	if (ioctl(fd, DRM_IOCTL_MODE_GETFRAMEBUFFER, &info))
-		return 0;
-
-	if (!(r = drmMalloc(sizeof(*r))))
-		return 0;
-
-	/* TODO change to new code
-	r->minWidth  = info.minWidth;
-	r->maxWidth  = info.maxWidth;
-	r->minHeight = info.minHeight;
-	r->maxHeight = info.maxHeight;*/
-
-	return r;
-}
-
-uint32_t drmModeNewFrameBuffer(int fd, uint32_t width, uint32_t height,
-		uint8_t bpp, uint32_t pitch, drmBO *bo)
-{
-	drm_mode_fb_cmd_t f;
-
-	f.handle = bo->handle;
-	f.width  = width;
-	f.height = height;
-	f.pitch  = pitch;
-
-	//	if (ioctl(fd, DRM_IOCTL_MODE_NEWFRAMEBUFFER, &f))
-		return 0;
-
-	return f.bufferId;
-}
-
-int drmModeDesFrameBuffer(int fd, uint32_t bufferId)
-{
-  //	return ioctl(fd, DRM_IOCTL_MODE_DESFRAMEBUFFER, bufferId);
-}
-
 #endif
 /*
  * Crtc function.

libdrm/xf86drmMode.h

@@ -76,14 +76,7 @@ typedef struct _drmModeRes {
 
 } drmModeRes, *drmModeResPtr;
 
-typedef struct _drmModeFrameBuffer {
-
-	uint32_t width;
-	uint32_t height;
-	uint32_t pitch;
-	uint8_t bpp;
-
-} drmModeFrameBuffer, *drmModeFrameBufferPtr;
+typedef struct drm_mode_fb_cmd drmModeFrameBuffer, *drmModeFrameBufferPtr;
 
 typedef struct _drmModeCrtc {
 
@@ -209,14 +202,14 @@ extern int drmModeForceProbe(int fd, uint32_t outputId);
 /**
  * Retrive information about framebuffer bufferId
  */
-extern drmModeFrameBufferPtr drmModeGetFB(int fd,
-		uint32_t bufferId);
+extern drmModeFrameBufferPtr drmModeGetFB(int fd, uint32_t bufferId);
 
 /**
  * Creates a new framebuffer with an buffer object as its scanout buffer.
  */
 extern int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
-			uint8_t bpp, uint32_t pitch, drmBO *bo, uint32_t *buf_id);
+			uint8_t bpp, uint32_t pitch, drmBO *bo,
+			uint32_t *buf_id);
 /**
  * Destroies the given framebuffer.
  */

linux-core/drm_crtc.c

@@ -1058,3 +1058,33 @@ int drm_mode_rmfb(struct inode *inode, struct file *filp,
 	return 0;
 }
 
+int drm_mode_getfb(struct inode *inode, struct file *filp,
+		   unsigned int cmd, unsigned long arg)
+{
+	drm_file_t *priv = filp->private_data;
+	drm_device_t *dev = priv->head->dev;	
+	struct drm_mode_fb_cmd __user *argp = (void __user *)arg;
+	struct drm_mode_fb_cmd r;
+	struct drm_framebuffer *fb;
+
+	if (copy_from_user(&r, argp, sizeof(r)))
+		return -EFAULT;
+
+	fb = idr_find(&dev->mode_config.crtc_idr, r.buffer_id);
+	if (!fb || (r.buffer_id != fb->id)) {
+		DRM_ERROR("invalid framebuffer id\n");
+		return -EINVAL;
+	}
+
+	r.height = fb->height;
+	r.width = fb->width;
+	r.depth = fb->depth;
+	r.bpp = fb->bits_per_pixel;
+	r.handle = fb->bo->base.hash.key;
+	r.pitch = fb->pitch;
+
+	if (copy_to_user(argp, &r, sizeof(r)))
+		return -EFAULT;
+
+	return 0;
+}

linux-core/drm_crtc.h

@@ -474,5 +474,7 @@ extern int drm_mode_addfb(struct inode *inode, struct file *filp,
 			  unsigned int cmd, unsigned long arg);
 extern int drm_mode_rmfb(struct inode *inode, struct file *filp,
 			 unsigned int cmd, unsigned long arg);
+extern int drm_mode_getfb(struct inode *inode, struct file *filp,
+			  unsigned int cmd, unsigned long arg);
 #endif /* __DRM_CRTC_H__ */
 

linux-core/drm_drv.c

@@ -129,6 +129,7 @@ static drm_ioctl_desc_t drm_ioctls[] = {
 	[DRM_IOCTL_NR(DRM_IOCTL_MODE_SETCRTC)] = {drm_mode_setcrtc, DRM_MASTER|DRM_ROOT_ONLY},
 	[DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB)] = {drm_mode_addfb, DRM_MASTER|DRM_ROOT_ONLY},
 	[DRM_IOCTL_NR(DRM_IOCTL_MODE_RMFB)] = {drm_mode_rmfb, DRM_MASTER|DRM_ROOT_ONLY},
+	[DRM_IOCTL_NR(DRM_IOCTL_MODE_GETFB)] = {drm_mode_getfb, DRM_MASTER|DRM_ROOT_ONLY},
 };
 
 #define DRM_CORE_IOCTL_COUNT	ARRAY_SIZE( drm_ioctls )

shared-core/drm.h

@@ -1051,6 +1051,7 @@ struct drm_mode_fb_cmd {
 #define DRM_IOCTL_MODE_SETCRTC          DRM_IOWR(0xA3, struct drm_mode_crtc)
 #define DRM_IOCTL_MODE_ADDFB            DRM_IOWR(0xA4, struct drm_mode_fb_cmd)
 #define DRM_IOCTL_MODE_RMFB             DRM_IOWR(0xA5, unsigned int)
+#define DRM_IOCTL_MODE_GETFB             DRM_IOWR(0xA6, struct drm_mode_fb_cmd)
 /*@}*/
 
 /**