drm/vmwgfx: Switch over to internal atomic API for STDU
authorSinclair Yeh <syeh@vmware.com>
Thu, 23 Mar 2017 21:29:22 +0000 (14:29 -0700)
committerSinclair Yeh <syeh@vmware.com>
Fri, 31 Mar 2017 22:21:12 +0000 (15:21 -0700)
Switch over to using internal atomic API for mode set.

This removes the legacy set_config API, replacing it with
drm_atomic_helper_set_config().  The DRM helper will use various
vmwgfx-specific atomic functions to set a mode.

DRIVER_ATOMIC capability flag is not yet set, so the user mode
will still use the legacy mode set IOCTL.

v2:
* Avoid a clash between page-flip pinning and setcrtc pinning, modify
the page-flip code to use the page-flip helper and the atomic callbacks.
To enable this, we will need to add a wrapper around atomic_commit.

* Add vmw_kms_set_config() to work around vmwgfx xorg driver bug

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c

index 1071e10..fe226e7 100644 (file)
@@ -2885,3 +2885,23 @@ vmw_kms_create_implicit_placement_property(struct vmw_private *dev_priv,
                                          "implicit_placement", 0, 1);
 
 }
+
+
+/**
+ * vmw_kms_set_config - Wrapper around drm_atomic_helper_set_config
+ *
+ * @set: The configuration to set.
+ *
+ * The vmwgfx Xorg driver doesn't assign the mode::type member, which
+ * when drm_mode_set_crtcinfo is called as part of the configuration setting
+ * causes it to return incorrect crtc dimensions causing severe problems in
+ * the vmwgfx modesetting. So explicitly clear that member before calling
+ * into drm_atomic_helper_set_config.
+ */
+int vmw_kms_set_config(struct drm_mode_set *set)
+{
+       if (set && set->mode)
+               set->mode->type = 0;
+
+       return drm_atomic_helper_set_config(set);
+}
index de6a0b6..7689f47 100644 (file)
@@ -449,5 +449,6 @@ int vmw_kms_stdu_dma(struct vmw_private *dev_priv,
                     bool to_surface,
                     bool interruptible);
 
+int vmw_kms_set_config(struct drm_mode_set *set);
 
 #endif
index 76ca5fa..b7999eb 100644 (file)
@@ -104,8 +104,7 @@ struct vmw_stdu_surface_copy {
  */
 struct vmw_screen_target_display_unit {
        struct vmw_display_unit base;
-
-       struct vmw_surface     *display_srf;
+       const struct vmw_surface *display_srf;
        enum stdu_content_type content_fb_type;
 
        bool defined;
@@ -118,32 +117,6 @@ static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu);
 
 
 /******************************************************************************
- * Screen Target Display Unit helper Functions
- *****************************************************************************/
-
-/**
- * vmw_stdu_unpin_display - unpins the resource associated with display surface
- *
- * @stdu: contains the display surface
- *
- * If the display surface was privatedly allocated by
- * vmw_surface_gb_priv_define() and not registered as a framebuffer, then it
- * won't be automatically cleaned up when all the framebuffers are freed.  As
- * such, we have to explicitly call vmw_resource_unreference() to get it freed.
- */
-static void vmw_stdu_unpin_display(struct vmw_screen_target_display_unit *stdu)
-{
-       if (stdu->display_srf) {
-               struct vmw_resource *res = &stdu->display_srf->res;
-
-               vmw_resource_unpin(res);
-               vmw_surface_unreference(&stdu->display_srf);
-       }
-}
-
-
-
-/******************************************************************************
  * Screen Target Display Unit CRTC Functions
  *****************************************************************************/
 
@@ -228,7 +201,7 @@ static int vmw_stdu_define_st(struct vmw_private *dev_priv,
  */
 static int vmw_stdu_bind_st(struct vmw_private *dev_priv,
                            struct vmw_screen_target_display_unit *stdu,
-                           struct vmw_resource *res)
+                           const struct vmw_resource *res)
 {
        SVGA3dSurfaceImageId image;
 
@@ -377,129 +350,6 @@ static int vmw_stdu_destroy_st(struct vmw_private *dev_priv,
        return ret;
 }
 
-/**
- * vmw_stdu_bind_fb - Bind an fb to a defined screen target
- *
- * @dev_priv: Pointer to a device private struct.
- * @crtc: The crtc holding the screen target.
- * @mode: The mode currently used by the screen target. Must be non-NULL.
- * @new_fb: The new framebuffer to bind. Must be non-NULL.
- *
- * RETURNS:
- * 0 on success, error code on failure.
- */
-static int vmw_stdu_bind_fb(struct vmw_private *dev_priv,
-                           struct drm_crtc *crtc,
-                           struct drm_display_mode *mode,
-                           struct drm_framebuffer *new_fb)
-{
-       struct vmw_screen_target_display_unit *stdu = vmw_crtc_to_stdu(crtc);
-       struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
-       struct vmw_surface *new_display_srf = NULL;
-       enum stdu_content_type new_content_type;
-       struct vmw_framebuffer_surface *new_vfbs;
-       int ret;
-
-       WARN_ON_ONCE(!stdu->defined);
-
-       new_vfbs = (vfb->dmabuf) ? NULL : vmw_framebuffer_to_vfbs(new_fb);
-
-       if (new_vfbs && new_vfbs->surface->base_size.width == mode->hdisplay &&
-           new_vfbs->surface->base_size.height == mode->vdisplay)
-               new_content_type = SAME_AS_DISPLAY;
-       else if (vfb->dmabuf)
-               new_content_type = SEPARATE_DMA;
-       else
-               new_content_type = SEPARATE_SURFACE;
-
-       if (new_content_type != SAME_AS_DISPLAY &&
-           !stdu->display_srf) {
-               struct vmw_surface content_srf;
-               struct drm_vmw_size display_base_size = {0};
-
-               display_base_size.width  = mode->hdisplay;
-               display_base_size.height = mode->vdisplay;
-               display_base_size.depth  = 1;
-
-               /*
-                * If content buffer is a DMA buf, then we have to construct
-                * surface info
-                */
-               if (new_content_type == SEPARATE_DMA) {
-
-                       switch (new_fb->format->cpp[0] * 8) {
-                       case 32:
-                               content_srf.format = SVGA3D_X8R8G8B8;
-                               break;
-
-                       case 16:
-                               content_srf.format = SVGA3D_R5G6B5;
-                               break;
-
-                       case 8:
-                               content_srf.format = SVGA3D_P8;
-                               break;
-
-                       default:
-                               DRM_ERROR("Invalid format\n");
-                               return -EINVAL;
-                       }
-
-                       content_srf.flags             = 0;
-                       content_srf.mip_levels[0]     = 1;
-                       content_srf.multisample_count = 0;
-               } else {
-                       content_srf = *new_vfbs->surface;
-               }
-
-
-               ret = vmw_surface_gb_priv_define(crtc->dev,
-                               0, /* because kernel visible only */
-                               content_srf.flags,
-                               content_srf.format,
-                               true, /* a scanout buffer */
-                               content_srf.mip_levels[0],
-                               content_srf.multisample_count,
-                               0,
-                               display_base_size,
-                               &new_display_srf);
-               if (unlikely(ret != 0)) {
-                       DRM_ERROR("Could not allocate screen target surface.\n");
-                       return ret;
-               }
-       } else if (new_content_type == SAME_AS_DISPLAY) {
-               new_display_srf = vmw_surface_reference(new_vfbs->surface);
-       }
-
-       if (new_display_srf) {
-               /* Pin new surface before flipping */
-               ret = vmw_resource_pin(&new_display_srf->res, false);
-               if (ret)
-                       goto out_srf_unref;
-
-               ret = vmw_stdu_bind_st(dev_priv, stdu, &new_display_srf->res);
-               if (ret)
-                       goto out_srf_unpin;
-
-               /* Unpin and unreference old surface */
-               vmw_stdu_unpin_display(stdu);
-
-               /* Transfer the reference */
-               stdu->display_srf = new_display_srf;
-               new_display_srf = NULL;
-       }
-
-       crtc->primary->fb = new_fb;
-       stdu->content_fb_type = new_content_type;
-       return 0;
-
-out_srf_unpin:
-       vmw_resource_unpin(&new_display_srf->res);
-out_srf_unref:
-       vmw_surface_unreference(&new_display_srf);
-       return ret;
-}
-
 
 /**
  * vmw_stdu_crtc_mode_set_nofb - Updates screen target size
@@ -601,136 +451,6 @@ static void vmw_stdu_crtc_helper_disable(struct drm_crtc *crtc)
 }
 
 /**
- * vmw_stdu_crtc_set_config - Sets a mode
- *
- * @set:  mode parameters
- *
- * This function is the device-specific portion of the DRM CRTC mode set.
- * For the SVGA device, we do this by defining a Screen Target, binding a
- * GB Surface to that target, and finally update the screen target.
- *
- * RETURNS:
- * 0 on success, error code otherwise
- */
-static int vmw_stdu_crtc_set_config(struct drm_mode_set *set)
-{
-       struct vmw_private *dev_priv;
-       struct vmw_framebuffer *vfb;
-       struct vmw_screen_target_display_unit *stdu;
-       struct drm_display_mode *mode;
-       struct drm_framebuffer  *new_fb;
-       struct drm_crtc      *crtc;
-       struct drm_encoder   *encoder;
-       struct drm_connector *connector;
-       bool turning_off;
-       int    ret;
-
-
-       if (!set || !set->crtc)
-               return -EINVAL;
-
-       crtc     = set->crtc;
-       stdu     = vmw_crtc_to_stdu(crtc);
-       mode     = set->mode;
-       new_fb   = set->fb;
-       dev_priv = vmw_priv(crtc->dev);
-       turning_off = set->num_connectors == 0 || !mode || !new_fb;
-       vfb = (new_fb) ? vmw_framebuffer_to_vfb(new_fb) : NULL;
-
-       if (set->num_connectors > 1) {
-               DRM_ERROR("Too many connectors\n");
-               return -EINVAL;
-       }
-
-       if (set->num_connectors == 1 &&
-           set->connectors[0] != &stdu->base.connector) {
-               DRM_ERROR("Connectors don't match %p %p\n",
-                       set->connectors[0], &stdu->base.connector);
-               return -EINVAL;
-       }
-
-       if (!turning_off && (set->x + mode->hdisplay > new_fb->width ||
-                            set->y + mode->vdisplay > new_fb->height)) {
-               DRM_ERROR("Set outside of framebuffer\n");
-               return -EINVAL;
-       }
-
-       /* Only one active implicit frame-buffer at a time. */
-       mutex_lock(&dev_priv->global_kms_state_mutex);
-       if (!turning_off && stdu->base.is_implicit && dev_priv->implicit_fb &&
-           !(dev_priv->num_implicit == 1 && stdu->base.active_implicit)
-           && dev_priv->implicit_fb != vfb) {
-               mutex_unlock(&dev_priv->global_kms_state_mutex);
-               DRM_ERROR("Multiple implicit framebuffers not supported.\n");
-               return -EINVAL;
-       }
-       mutex_unlock(&dev_priv->global_kms_state_mutex);
-
-       /* Since they always map one to one these are safe */
-       connector = &stdu->base.connector;
-       encoder   = &stdu->base.encoder;
-
-       if (stdu->defined) {
-               ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
-               if (ret)
-                       return ret;
-
-               vmw_stdu_unpin_display(stdu);
-               (void) vmw_stdu_update_st(dev_priv, stdu);
-               vmw_kms_del_active(dev_priv, &stdu->base);
-
-               ret = vmw_stdu_destroy_st(dev_priv, stdu);
-               if (ret)
-                       return ret;
-
-               crtc->primary->fb = NULL;
-               crtc->enabled = false;
-               encoder->crtc = NULL;
-               connector->encoder = NULL;
-               stdu->content_fb_type = SAME_AS_DISPLAY;
-               crtc->x = set->x;
-               crtc->y = set->y;
-       }
-
-       if (turning_off)
-               return 0;
-
-       /*
-        * Steps to displaying a surface, assume surface is already
-        * bound:
-        *   1.  define a screen target
-        *   2.  bind a fb to the screen target
-        *   3.  update that screen target (this is done later by
-        *       vmw_kms_stdu_do_surface_dirty_or_present)
-        */
-       /*
-        * Note on error handling: We can't really restore the crtc to
-        * it's original state on error, but we at least update the
-        * current state to what's submitted to hardware to enable
-        * future recovery.
-        */
-       vmw_svga_enable(dev_priv);
-       ret = vmw_stdu_define_st(dev_priv, stdu, mode, set->x, set->y);
-       if (ret)
-               return ret;
-
-       crtc->x = set->x;
-       crtc->y = set->y;
-       crtc->mode = *mode;
-
-       ret = vmw_stdu_bind_fb(dev_priv, crtc, mode, new_fb);
-       if (ret)
-               return ret;
-
-       vmw_kms_add_active(dev_priv, &stdu->base, vfb);
-       crtc->enabled = true;
-       connector->encoder = encoder;
-       encoder->crtc      = crtc;
-
-       return 0;
-}
-
-/**
  * vmw_stdu_crtc_page_flip - Binds a buffer to a screen target
  *
  * @crtc: CRTC to attach FB to
@@ -756,9 +476,9 @@ static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
 
 {
        struct vmw_private *dev_priv = vmw_priv(crtc->dev);
-       struct vmw_screen_target_display_unit *stdu;
-       struct drm_vmw_rect vclips;
+       struct vmw_screen_target_display_unit *stdu = vmw_crtc_to_stdu(crtc);
        struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
+       struct drm_vmw_rect vclips;
        int ret;
 
        dev_priv          = vmw_priv(crtc->dev);
@@ -767,25 +487,42 @@ static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
        if (!stdu->defined || !vmw_kms_crtc_flippable(dev_priv, crtc))
                return -EINVAL;
 
-       ret = vmw_stdu_bind_fb(dev_priv, crtc, &crtc->mode, new_fb);
-       if (ret)
+       /*
+        * We're always async, but the helper doesn't know how to set async
+        * so lie to the helper. Also, the helper expects someone
+        * to pick the event up from the crtc state, and if nobody does,
+        * it will free it. Since we handle the event in this function,
+        * don't hand it to the helper.
+        */
+       flags &= ~DRM_MODE_PAGE_FLIP_ASYNC;
+       ret = drm_atomic_helper_page_flip(crtc, new_fb, NULL, flags);
+       if (ret) {
+               DRM_ERROR("Page flip error %d.\n", ret);
                return ret;
+       }
 
        if (stdu->base.is_implicit)
                vmw_kms_update_implicit_fb(dev_priv, crtc);
 
+       /*
+        * Now that we've bound a new surface to the screen target,
+        * update the contents.
+        */
        vclips.x = crtc->x;
        vclips.y = crtc->y;
        vclips.w = crtc->mode.hdisplay;
        vclips.h = crtc->mode.vdisplay;
+
        if (vfb->dmabuf)
                ret = vmw_kms_stdu_dma(dev_priv, NULL, vfb, NULL, NULL, &vclips,
                                       1, 1, true, false);
        else
                ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, &vclips,
                                                 NULL, 0, 0, 1, 1, NULL);
-       if (ret)
+       if (ret) {
+               DRM_ERROR("Page flip update error %d.\n", ret);
                return ret;
+       }
 
        if (event) {
                struct vmw_fence_obj *fence = NULL;
@@ -802,7 +539,7 @@ static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
                                                   true);
                vmw_fence_obj_unreference(&fence);
        } else {
-               vmw_fifo_flush(dev_priv, false);
+               (void) vmw_fifo_flush(dev_priv, false);
        }
 
        return 0;
@@ -1123,7 +860,7 @@ static const struct drm_crtc_funcs vmw_stdu_crtc_funcs = {
        .reset = vmw_du_crtc_reset,
        .atomic_duplicate_state = vmw_du_crtc_duplicate_state,
        .atomic_destroy_state = vmw_du_crtc_destroy_state,
-       .set_config = vmw_stdu_crtc_set_config,
+       .set_config = vmw_kms_set_config,
        .page_flip = vmw_stdu_crtc_page_flip,
 };
 
@@ -1425,8 +1162,8 @@ vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
 
 
 static const struct drm_plane_funcs vmw_stdu_plane_funcs = {
-       .update_plane = drm_primary_helper_update,
-       .disable_plane = drm_primary_helper_disable,
+       .update_plane = drm_atomic_helper_update_plane,
+       .disable_plane = drm_atomic_helper_disable_plane,
        .destroy = vmw_du_primary_plane_destroy,
        .reset = vmw_du_plane_reset,
        .atomic_duplicate_state = vmw_du_plane_duplicate_state,
@@ -1434,8 +1171,8 @@ static const struct drm_plane_funcs vmw_stdu_plane_funcs = {
 };
 
 static const struct drm_plane_funcs vmw_stdu_cursor_funcs = {
-       .update_plane = vmw_du_cursor_plane_update,
-       .disable_plane = vmw_du_cursor_plane_disable,
+       .update_plane = drm_atomic_helper_update_plane,
+       .disable_plane = drm_atomic_helper_disable_plane,
        .destroy = vmw_du_cursor_plane_destroy,
        .reset = vmw_du_plane_reset,
        .atomic_duplicate_state = vmw_du_plane_duplicate_state,
@@ -1625,8 +1362,6 @@ err_free:
  */
 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu)
 {
-       vmw_stdu_unpin_display(stdu);
-
        vmw_du_cleanup(&stdu->base);
        kfree(stdu);
 }