Merge branch 'master' into crestline

Conflicts:

	shared-core/i915_dma.c

1 files changed, 95 insertions, 110 deletions

diff --git a/shared-core/mach64_state.c b/shared-core/mach64_state.c
index ce44f0d5..38cefca9 100644
--- a/shared-core/mach64_state.c
+++ b/shared-core/mach64_state.c
@@ -480,16 +480,16 @@ static int mach64_do_get_frames_queued(drm_mach64_private_t * dev_priv)
 /* Copy and verify a client submited buffer.
  * FIXME: Make an assembly optimized version
  */
-static __inline__ int copy_and_verify_from_user(u32 *to,
-						const u32 __user *ufrom,
-						unsigned long bytes)
+static __inline__ int copy_from_user_vertex(u32 *to,
+					    const u32 __user *ufrom,
+					    unsigned long bytes)
 {
 	unsigned long n = bytes;	/* dwords remaining in buffer */
 	u32 *from, *orig_from;
 
 	from = drm_alloc(bytes, DRM_MEM_DRIVER);
 	if (from == NULL)
-		return ENOMEM;
+		return DRM_ERR(ENOMEM);
 
 	if (DRM_COPY_FROM_USER(from, ufrom, bytes)) {
 		drm_free(from, bytes, DRM_MEM_DRIVER);
@@ -546,12 +546,15 @@ static __inline__ int copy_and_verify_from_user(u32 *to,
 }
 
 static int mach64_dma_dispatch_vertex(DRMFILE filp, drm_device_t * dev,
-				      int prim, void *buf, unsigned long used,
-				      int discard)
+				      drm_mach64_vertex_t * vertex)
 {
 	drm_mach64_private_t *dev_priv = dev->dev_private;
 	drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv;
 	drm_buf_t *copy_buf;
+	void *buf = vertex->buf;
+	unsigned long used = vertex->used;
+	int ret = 0;
+	int i = 0;
 	int done = 0;
 	int verify_ret = 0;
 	DMALOCALS;
@@ -559,100 +562,92 @@ static int mach64_dma_dispatch_vertex(DRMFILE filp, drm_device_t * dev,
 	DRM_DEBUG("%s: buf=%p used=%lu nbox=%d\n",
 		  __FUNCTION__, buf, used, sarea_priv->nbox);
 
-	if (used) {
-		int ret = 0;
-		int i = 0;
+	if (!used)
+		goto _vertex_done;
 
-		copy_buf = mach64_freelist_get(dev_priv);
-		if (copy_buf == NULL) {
-			DRM_ERROR("%s: couldn't get buffer in DMAGETPTR\n",
-				  __FUNCTION__);
-			return DRM_ERR(EAGAIN);
-		}
+	copy_buf = mach64_freelist_get(dev_priv);
+	if (copy_buf == NULL) {
+		DRM_ERROR("%s: couldn't get buffer\n", __FUNCTION__);
+		return DRM_ERR(EAGAIN);
+	}
+
+	verify_ret = copy_from_user_vertex(GETBUFPTR(copy_buf), buf, used);
 
-		if ((verify_ret =
-		     copy_and_verify_from_user(GETBUFPTR(copy_buf), buf,
-					       used)) == 0) {
+	if (verify_ret != 0) {
+		mach64_freelist_put(dev_priv, copy_buf);
+		goto _vertex_done;
+	}
 
-			copy_buf->used = used;
+	copy_buf->used = used;
 
-			DMASETPTR(copy_buf);
+	DMASETPTR(copy_buf);
 
-			if (sarea_priv->dirty & ~MACH64_UPLOAD_CLIPRECTS) {
-				ret = mach64_emit_state(filp, dev_priv);
-				if (ret < 0)
-					return ret;
-			}
+	if (sarea_priv->dirty & ~MACH64_UPLOAD_CLIPRECTS) {
+		ret = mach64_emit_state(filp, dev_priv);
+		if (ret < 0)
+			return ret;
+	}
 
-			do {
-				/* Emit the next cliprect */
-				if (i < sarea_priv->nbox) {
-					ret =
-					    mach64_emit_cliprect(filp, dev_priv,
-								 &sarea_priv->
-								 boxes[i]);
-					if (ret < 0) {
-						/* failed to get buffer */
-						return ret;
-					} else if (ret != 0) {
-						/* null intersection with scissor */
-						continue;
-					}
-				}
-				if ((i >= sarea_priv->nbox - 1))
-					done = 1;
-
-				/* Add the buffer to the DMA queue */
-				DMAADVANCE(dev_priv, done);
-
-			} while (++i < sarea_priv->nbox);
+	do {
+		/* Emit the next cliprect */
+		if (i < sarea_priv->nbox) {
+			ret = mach64_emit_cliprect(filp, dev_priv,
+						   &sarea_priv->boxes[i]);
+			if (ret < 0) {
+				/* failed to get buffer */
+				return ret;
+			} else if (ret != 0) {
+				/* null intersection with scissor */
+				continue;
+			}
 		}
+		if ((i >= sarea_priv->nbox - 1))
+			done = 1;
+
+		/* Add the buffer to the DMA queue */
+		DMAADVANCE(dev_priv, done);
+
+	} while (++i < sarea_priv->nbox);
 
-		if (copy_buf->pending && !done) {
+	if (!done) {
+		if (copy_buf->pending) {
 			DMADISCARDBUF();
-		} else if (!done) {
-			/* This buffer wasn't used (no cliprects or verify failed), so place it back
-			 * on the free list
+		} else {
+			/* This buffer wasn't used (no cliprects), so place it
+			 * back on the free list
 			 */
-			struct list_head *ptr;
-			drm_mach64_freelist_t *entry;
-#if MACH64_EXTRA_CHECKING
-			list_for_each(ptr, &dev_priv->pending) {
-				entry =
-				    list_entry(ptr, drm_mach64_freelist_t,
-					       list);
-				if (copy_buf == entry->buf) {
-					DRM_ERROR
-					    ("%s: Trying to release a pending buf\n",
-					     __FUNCTION__);
-					return DRM_ERR(EFAULT);
-				}
-			}
-#endif
-			ptr = dev_priv->placeholders.next;
-			entry = list_entry(ptr, drm_mach64_freelist_t, list);
-			copy_buf->pending = 0;
-			copy_buf->used = 0;
-			entry->buf = copy_buf;
-			entry->discard = 1;
-			list_del(ptr);
-			list_add_tail(ptr, &dev_priv->free_list);
+			mach64_freelist_put(dev_priv, copy_buf);
 		}
 	}
 
+_vertex_done:
 	sarea_priv->dirty &= ~MACH64_UPLOAD_CLIPRECTS;
 	sarea_priv->nbox = 0;
 
 	return verify_ret;
 }
 
+static __inline__ int copy_from_user_blit(u32 *to,
+					  const u32 __user *ufrom,
+					  unsigned long bytes)
+{
+	to = (u32 *)((char *)to + MACH64_HOSTDATA_BLIT_OFFSET);
+
+	if (DRM_COPY_FROM_USER(to, ufrom, bytes)) {
+		return DRM_ERR(EFAULT);
+	}
+
+	return 0;
+}
+
 static int mach64_dma_dispatch_blit(DRMFILE filp, drm_device_t * dev,
 				    drm_mach64_blit_t * blit)
 {
 	drm_mach64_private_t *dev_priv = dev->dev_private;
-	drm_device_dma_t *dma = dev->dma;
 	int dword_shift, dwords;
-	drm_buf_t *buf;
+	unsigned long used;
+	drm_buf_t *copy_buf;
+	int verify_ret = 0;
 	DMALOCALS;
 
 	/* The compiler won't optimize away a division by a variable,
@@ -679,34 +674,34 @@ static int mach64_dma_dispatch_blit(DRMFILE filp, drm_device_t * dev,
 		return DRM_ERR(EINVAL);
 	}
 
-	/* Dispatch the blit buffer.
-	 */
-	buf = dma->buflist[blit->idx];
-
-	if (buf->filp != filp) {
-		DRM_ERROR("process %d (filp %p) using buffer with filp %p\n",
-			  DRM_CURRENTPID, filp, buf->filp);
-		return DRM_ERR(EINVAL);
-	}
-
-	if (buf->pending) {
-		DRM_ERROR("sending pending buffer %d\n", blit->idx);
-		return DRM_ERR(EINVAL);
-	}
-
 	/* Set buf->used to the bytes of blit data based on the blit dimensions
 	 * and verify the size.  When the setup is emitted to the buffer with
 	 * the DMA* macros below, buf->used is incremented to include the bytes
 	 * used for setup as well as the blit data.
 	 */
 	dwords = (blit->width * blit->height) >> dword_shift;
-	buf->used = dwords << 2;
-	if (buf->used <= 0 ||
-	    buf->used > MACH64_BUFFER_SIZE - MACH64_HOSTDATA_BLIT_OFFSET) {
-		DRM_ERROR("Invalid blit size: %d bytes\n", buf->used);
+	used = dwords << 2;
+	if (used <= 0 ||
+	    used > MACH64_BUFFER_SIZE - MACH64_HOSTDATA_BLIT_OFFSET) {
+		DRM_ERROR("Invalid blit size: %lu bytes\n", used);
 		return DRM_ERR(EINVAL);
 	}
 
+	copy_buf = mach64_freelist_get(dev_priv);
+	if (copy_buf == NULL) {
+		DRM_ERROR("%s: couldn't get buffer\n", __FUNCTION__);
+		return DRM_ERR(EAGAIN);
+	}
+
+	verify_ret = copy_from_user_blit(GETBUFPTR(copy_buf), blit->buf, used);
+
+	if (verify_ret != 0) {
+		mach64_freelist_put(dev_priv, copy_buf);
+		goto _blit_done;
+	}
+
+	copy_buf->used = used;
+
 	/* FIXME: Use a last buffer flag and reduce the state emitted for subsequent,
 	 * continuation buffers?
 	 */
@@ -715,7 +710,7 @@ static int mach64_dma_dispatch_blit(DRMFILE filp, drm_device_t * dev,
 	 * a register command every 16 dwords.  State setup is added at the start of the
 	 * buffer -- the client leaves space for this based on MACH64_HOSTDATA_BLIT_OFFSET
 	 */
-	DMASETPTR(buf);
+	DMASETPTR(copy_buf);
 
 	DMAOUTREG(MACH64_Z_CNTL, 0);
 	DMAOUTREG(MACH64_SCALE_3D_CNTL, 0);
@@ -745,12 +740,13 @@ static int mach64_dma_dispatch_blit(DRMFILE filp, drm_device_t * dev,
 	DMAOUTREG(MACH64_DST_X_Y, (blit->y << 16) | blit->x);
 	DMAOUTREG(MACH64_DST_WIDTH_HEIGHT, (blit->height << 16) | blit->width);
 
-	DRM_DEBUG("%s: %d bytes\n", __FUNCTION__, buf->used);
+	DRM_DEBUG("%s: %lu bytes\n", __FUNCTION__, used);
 
 	/* Add the buffer to the queue */
 	DMAADVANCEHOSTDATA(dev_priv);
 
-	return 0;
+_blit_done:
+	return verify_ret;
 }
 
 /* ================================================================
@@ -842,14 +838,12 @@ int mach64_dma_vertex(DRM_IOCTL_ARGS)
 	if (sarea_priv->nbox > MACH64_NR_SAREA_CLIPRECTS)
 		sarea_priv->nbox = MACH64_NR_SAREA_CLIPRECTS;
 
-	return mach64_dma_dispatch_vertex(filp, dev, vertex.prim, vertex.buf,
-					  vertex.used, vertex.discard);
+	return mach64_dma_dispatch_vertex(filp, dev, &vertex);
 }
 
 int mach64_dma_blit(DRM_IOCTL_ARGS)
 {
 	DRM_DEVICE;
-	drm_device_dma_t *dma = dev->dma;
 	drm_mach64_private_t *dev_priv = dev->dev_private;
 	drm_mach64_sarea_t *sarea_priv = dev_priv->sarea_priv;
 	drm_mach64_blit_t blit;
@@ -860,15 +854,6 @@ int mach64_dma_blit(DRM_IOCTL_ARGS)
 	DRM_COPY_FROM_USER_IOCTL(blit, (drm_mach64_blit_t *) data,
 				 sizeof(blit));
 
-	DRM_DEBUG("%s: pid=%d index=%d\n",
-		  __FUNCTION__, DRM_CURRENTPID, blit.idx);
-
-	if (blit.idx < 0 || blit.idx >= dma->buf_count) {
-		DRM_ERROR("buffer index %d (of %d max)\n",
-			  blit.idx, dma->buf_count - 1);
-		return DRM_ERR(EINVAL);
-	}
-
 	ret = mach64_dma_dispatch_blit(filp, dev, &blit);
 
 	/* Make sure we restore the 3D state next time.