Merge tag 'drm-for-v4.14' of git://people.freedesktop.org/~airlied/linux

Pull drm updates from Dave Airlie:
 "This is the main drm pull request for 4.14 merge window.

  I'm sending this early, as my continuing journey into fatherhood is
  occurring really soon now, I'm going to be mostly useless for the next
  couple of weeks, though I may be able to read email, I doubt I'll be
  doing much patch applications or git sending. If anything urgent pops
  up I've asked Daniel/Jani/Alex/Sean to try and direct stuff towards
  you.

  Outside drm changes:

  Some rcar-du updates that touch the V4L tree, all acks should be in
  place. It adds one export to the radix tree code for new i915 use
  case. There are some minor AGP cleanups (don't see that too often).
  Changes to the vbox driver in staging to avoid breaking compilation.

  Summary:

  core:
   - Atomic helper fixes
   - Atomic UAPI fixes
   - Add YCBCR 4:2:0 support
   - Drop set_busid hook
   - Refactor fb_helper locking
   - Remove a bunch of internal APIs
   - Add a bunch of better default handlers
   - Format modifier/blob plane property added
   - More internal header refactoring
   - Make more internal API names consistent
   - Enhanced syncobj APIs (wait/signal/reset/create signalled)

  bridge:
   - Add Synopsys Designware MIPI DSI host bridge driver

  tiny:
   - Add Pervasive Displays RePaper displays
   - Add support for LEGO MINDSTORMS EV3 LCD

  i915:
   - Lots of GEN10/CNL  support patches
   - drm syncobj support
   - Skylake+ watermark refactoring
   - GVT vGPU 48-bit ppgtt support
   - GVT performance improvements
   - NOA change ioctl
   - CCS (color compression) scanout support
   - GPU reset improvements

  amdgpu:
   - Initial hugepage support
   - BO migration logic rework
   - Vega10 improvements
   - Powerplay fixes
   - Stop reprogramming the MC
   - Fixes for ACP audio on stoney
   - SR-IOV fixes/improvements
   - Command submission overhead improvements

  amdkfd:
   - Non-dGPU upstreaming patches
   - Scratch VA ioctl
   - Image tiling modes
   - Update PM4 headers for new firmware
   - Drop all BUG_ONs.

  nouveau:
   - GP108 modesetting support.
   - Disable MSI on big endian.

  vmwgfx:
   - Add fence fd support.

  msm:
   - Runtime PM improvements

  exynos:
   - NV12MT support
   - Refactor KMS drivers

  imx-drm:
   - Lock scanout channel to improve memory bw
   - Cleanups

  etnaviv:
   - GEM object population fixes

  tegra:
   - Prep work for Tegra186 support
   - PRIME mmap support

  sunxi:
   - HDMI support improvements
   - HDMI CEC support

  omapdrm:
   - HDMI hotplug IRQ support
   - Big driver cleanup
   - OMAP5 DSI support

  rcar-du:
   - vblank fixes
   - VSP1 updates

  arcgpu:
   - Minor fixes

  stm:
   - Add STM32 DSI controller driver

  dw_hdmi:
   - Add support for Rockchip RK3399
   - HDMI CEC support

  atmel-hlcdc:
   - Add 8-bit color support

  vc4:
   - Atomic fixes
   - New ioctl to attach a label to a buffer object
   - HDMI CEC support
   - Allow userspace to dictate rendering order on submit ioctl"

* tag 'drm-for-v4.14' of git://people.freedesktop.org/~airlied/linux: (1074 commits)
  drm/syncobj: Add a signal ioctl (v3)
  drm/syncobj: Add a reset ioctl (v3)
  drm/syncobj: Add a syncobj_array_find helper
  drm/syncobj: Allow wait for submit and signal behavior (v5)
  drm/syncobj: Add a CREATE_SIGNALED flag
  drm/syncobj: Add a callback mechanism for replace_fence (v3)
  drm/syncobj: add sync obj wait interface. (v8)
  i915: Use drm_syncobj_fence_get
  drm/syncobj: Add a race-free drm_syncobj_fence_get helper (v2)
  drm/syncobj: Rename fence_get to find_fence
  drm: kirin: Add mode_valid logic to avoid mode clocks we can't generate
  drm/vmwgfx: Bump the version for fence FD support
  drm/vmwgfx: Add export fence to file descriptor support
  drm/vmwgfx: Add support for imported Fence File Descriptor
  drm/vmwgfx: Prepare to support fence fd
  drm/vmwgfx: Fix incorrect command header offset at restart
  drm/vmwgfx: Support the NOP_ERROR command
  drm/vmwgfx: Restart command buffers after errors
  drm/vmwgfx: Move irq bottom half processing to threads
  drm/vmwgfx: Don't use drm_irq_[un]install
  ...

1 files changed, 133 insertions, 15 deletions

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
index 2cfb3c93f42a..21c62a34e558 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
@@ -24,6 +24,7 @@
  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  *
  **************************************************************************/
+#include <linux/sync_file.h>
 
 #include "vmwgfx_drv.h"
 #include "vmwgfx_reg.h"
@@ -112,11 +113,12 @@ struct vmw_cmd_entry {
 	bool user_allow;
 	bool gb_disable;
 	bool gb_enable;
+	const char *cmd_name;
 };
 
 #define VMW_CMD_DEF(_cmd, _func, _user_allow, _gb_disable, _gb_enable)	\
 	[(_cmd) - SVGA_3D_CMD_BASE] = {(_func), (_user_allow),\
-				       (_gb_disable), (_gb_enable)}
+				       (_gb_disable), (_gb_enable), #_cmd}
 
 static int vmw_resource_context_res_add(struct vmw_private *dev_priv,
 					struct vmw_sw_context *sw_context,
@@ -3302,6 +3304,8 @@ static const struct vmw_cmd_entry vmw_cmd_entries[SVGA_3D_CMD_MAX] = {
 		    true, false, true),
 	VMW_CMD_DEF(SVGA_3D_CMD_NOP, &vmw_cmd_ok,
 		    true, false, true),
+	VMW_CMD_DEF(SVGA_3D_CMD_NOP_ERROR, &vmw_cmd_ok,
+		    true, false, true),
 	VMW_CMD_DEF(SVGA_3D_CMD_ENABLE_GART, &vmw_cmd_invalid,
 		    false, false, true),
 	VMW_CMD_DEF(SVGA_3D_CMD_DISABLE_GART, &vmw_cmd_invalid,
@@ -3469,6 +3473,51 @@ static const struct vmw_cmd_entry vmw_cmd_entries[SVGA_3D_CMD_MAX] = {
 		    true, false, true),
 };
 
+bool vmw_cmd_describe(const void *buf, u32 *size, char const **cmd)
+{
+	u32 cmd_id = ((u32 *) buf)[0];
+
+	if (cmd_id >= SVGA_CMD_MAX) {
+		SVGA3dCmdHeader *header = (SVGA3dCmdHeader *) buf;
+		const struct vmw_cmd_entry *entry;
+
+		*size = header->size + sizeof(SVGA3dCmdHeader);
+		cmd_id = header->id;
+		if (cmd_id >= SVGA_3D_CMD_MAX)
+			return false;
+
+		cmd_id -= SVGA_3D_CMD_BASE;
+		entry = &vmw_cmd_entries[cmd_id];
+		*cmd = entry->cmd_name;
+		return true;
+	}
+
+	switch (cmd_id) {
+	case SVGA_CMD_UPDATE:
+		*cmd = "SVGA_CMD_UPDATE";
+		*size = sizeof(u32) + sizeof(SVGAFifoCmdUpdate);
+		break;
+	case SVGA_CMD_DEFINE_GMRFB:
+		*cmd = "SVGA_CMD_DEFINE_GMRFB";
+		*size = sizeof(u32) + sizeof(SVGAFifoCmdDefineGMRFB);
+		break;
+	case SVGA_CMD_BLIT_GMRFB_TO_SCREEN:
+		*cmd = "SVGA_CMD_BLIT_GMRFB_TO_SCREEN";
+		*size = sizeof(u32) + sizeof(SVGAFifoCmdBlitGMRFBToScreen);
+		break;
+	case SVGA_CMD_BLIT_SCREEN_TO_GMRFB:
+		*cmd = "SVGA_CMD_BLIT_SCREEN_TO_GMRFB";
+		*size = sizeof(u32) + sizeof(SVGAFifoCmdBlitGMRFBToScreen);
+		break;
+	default:
+		*cmd = "UNKNOWN";
+		*size = 0;
+		return false;
+	}
+
+	return true;
+}
+
 static int vmw_cmd_check(struct vmw_private *dev_priv,
 			 struct vmw_sw_context *sw_context,
 			 void *buf, uint32_t *size)
@@ -3781,6 +3830,8 @@ int vmw_execbuf_fence_commands(struct drm_file *file_priv,
  * which the information should be copied.
  * @fence: Pointer to the fenc object.
  * @fence_handle: User-space fence handle.
+ * @out_fence_fd: exported file descriptor for the fence.  -1 if not used
+ * @sync_file:  Only used to clean up in case of an error in this function.
  *
  * This function copies fence information to user-space. If copying fails,
  * The user-space struct drm_vmw_fence_rep::error member is hopefully
@@ -3796,7 +3847,9 @@ vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv,
 			    int ret,
 			    struct drm_vmw_fence_rep __user *user_fence_rep,
 			    struct vmw_fence_obj *fence,
-			    uint32_t fence_handle)
+			    uint32_t fence_handle,
+			    int32_t out_fence_fd,
+			    struct sync_file *sync_file)
 {
 	struct drm_vmw_fence_rep fence_rep;
 
@@ -3806,6 +3859,7 @@ vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv,
 	memset(&fence_rep, 0, sizeof(fence_rep));
 
 	fence_rep.error = ret;
+	fence_rep.fd = out_fence_fd;
 	if (ret == 0) {
 		BUG_ON(fence == NULL);
 
@@ -3828,6 +3882,14 @@ vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv,
 	 * and unreference the handle.
 	 */
 	if (unlikely(ret != 0) && (fence_rep.error == 0)) {
+		if (sync_file)
+			fput(sync_file->file);
+
+		if (fence_rep.fd != -1) {
+			put_unused_fd(fence_rep.fd);
+			fence_rep.fd = -1;
+		}
+
 		ttm_ref_object_base_unref(vmw_fp->tfile,
 					  fence_handle, TTM_REF_USAGE);
 		DRM_ERROR("Fence copy error. Syncing.\n");
@@ -4003,7 +4065,8 @@ int vmw_execbuf_process(struct drm_file *file_priv,
 			uint64_t throttle_us,
 			uint32_t dx_context_handle,
 			struct drm_vmw_fence_rep __user *user_fence_rep,
-			struct vmw_fence_obj **out_fence)
+			struct vmw_fence_obj **out_fence,
+			uint32_t flags)
 {
 	struct vmw_sw_context *sw_context = &dev_priv->ctx;
 	struct vmw_fence_obj *fence = NULL;
@@ -4013,20 +4076,33 @@ int vmw_execbuf_process(struct drm_file *file_priv,
 	struct ww_acquire_ctx ticket;
 	uint32_t handle;
 	int ret;
+	int32_t out_fence_fd = -1;
+	struct sync_file *sync_file = NULL;
+
+
+	if (flags & DRM_VMW_EXECBUF_FLAG_EXPORT_FENCE_FD) {
+		out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
+		if (out_fence_fd < 0) {
+			DRM_ERROR("Failed to get a fence file descriptor.\n");
+			return out_fence_fd;
+		}
+	}
 
 	if (throttle_us) {
 		ret = vmw_wait_lag(dev_priv, &dev_priv->fifo.marker_queue,
 				   throttle_us);
 
 		if (ret)
-			return ret;
+			goto out_free_fence_fd;
 	}
 
 	kernel_commands = vmw_execbuf_cmdbuf(dev_priv, user_commands,
 					     kernel_commands, command_size,
 					     &header);
-	if (IS_ERR(kernel_commands))
-		return PTR_ERR(kernel_commands);
+	if (IS_ERR(kernel_commands)) {
+		ret = PTR_ERR(kernel_commands);
+		goto out_free_fence_fd;
+	}
 
 	ret = mutex_lock_interruptible(&dev_priv->cmdbuf_mutex);
 	if (ret) {
@@ -4162,8 +4238,32 @@ int vmw_execbuf_process(struct drm_file *file_priv,
 		__vmw_execbuf_release_pinned_bo(dev_priv, fence);
 
 	vmw_clear_validations(sw_context);
+
+	/*
+	 * If anything fails here, give up trying to export the fence
+	 * and do a sync since the user mode will not be able to sync
+	 * the fence itself.  This ensures we are still functionally
+	 * correct.
+	 */
+	if (flags & DRM_VMW_EXECBUF_FLAG_EXPORT_FENCE_FD) {
+
+		sync_file = sync_file_create(&fence->base);
+		if (!sync_file) {
+			DRM_ERROR("Unable to create sync file for fence\n");
+			put_unused_fd(out_fence_fd);
+			out_fence_fd = -1;
+
+			(void) vmw_fence_obj_wait(fence, false, false,
+						  VMW_FENCE_WAIT_TIMEOUT);
+		} else {
+			/* Link the fence with the FD created earlier */
+			fd_install(out_fence_fd, sync_file->file);
+		}
+	}
+
 	vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv), ret,
-				    user_fence_rep, fence, handle);
+				    user_fence_rep, fence, handle,
+				    out_fence_fd, sync_file);
 
 	/* Don't unreference when handing fence out */
 	if (unlikely(out_fence != NULL)) {
@@ -4214,6 +4314,9 @@ out_unlock:
 out_free_header:
 	if (header)
 		vmw_cmdbuf_header_free(header);
+out_free_fence_fd:
+	if (out_fence_fd >= 0)
+		put_unused_fd(out_fence_fd);
 
 	return ret;
 }
@@ -4366,6 +4469,7 @@ int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data,
 	static const size_t copy_offset[] = {
 		offsetof(struct drm_vmw_execbuf_arg, context_handle),
 		sizeof(struct drm_vmw_execbuf_arg)};
+	struct dma_fence *in_fence = NULL;
 
 	if (unlikely(size < copy_offset[0])) {
 		DRM_ERROR("Invalid command size, ioctl %d\n",
@@ -4401,15 +4505,25 @@ int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data,
 		arg.context_handle = (uint32_t) -1;
 		break;
 	case 2:
-		if (arg.pad64 != 0) {
-			DRM_ERROR("Unused IOCTL data not set to zero.\n");
-			return -EINVAL;
-		}
-		break;
 	default:
 		break;
 	}
 
+
+	/* If imported a fence FD from elsewhere, then wait on it */
+	if (arg.flags & DRM_VMW_EXECBUF_FLAG_IMPORT_FENCE_FD) {
+		in_fence = sync_file_get_fence(arg.imported_fence_fd);
+
+		if (!in_fence) {
+			DRM_ERROR("Cannot get imported fence\n");
+			return -EINVAL;
+		}
+
+		ret = vmw_wait_dma_fence(dev_priv->fman, in_fence);
+		if (ret)
+			goto out;
+	}
+
 	ret = ttm_read_lock(&dev_priv->reservation_sem, true);
 	if (unlikely(ret != 0))
 		return ret;
@@ -4419,12 +4533,16 @@ int vmw_execbuf_ioctl(struct drm_device *dev, unsigned long data,
 				  NULL, arg.command_size, arg.throttle_us,
 				  arg.context_handle,
 				  (void __user *)(unsigned long)arg.fence_rep,
-				  NULL);
+				  NULL,
+				  arg.flags);
 	ttm_read_unlock(&dev_priv->reservation_sem);
 	if (unlikely(ret != 0))
-		return ret;
+		goto out;
 
 	vmw_kms_cursor_post_execbuf(dev_priv);
 
-	return 0;
+out:
+	if (in_fence)
+		dma_fence_put(in_fence);
+	return ret;
 }