[PATCH 05/14] drm/vmwgfx: Break out implicit fb code
Thomas Hellstrom
thellstrom at vmware.com
Tue Mar 15 07:29:55 UTC 2016
Preparation for supporting explicit fbs for screen objects and screen
targets.
Signed-off-by: Thomas Hellstrom <thellstrom at vmware.com>
Reviewed-by: Sinclair Yeh <syeh at vmware.com>
---
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h | 3 +-
drivers/gpu/drm/vmwgfx/vmwgfx_kms.c | 92 ++++++++++++++++++++++++++
drivers/gpu/drm/vmwgfx/vmwgfx_kms.h | 12 ++++
drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c | 125 ++++-------------------------------
4 files changed, 120 insertions(+), 112 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 5cb1b16..b92521d 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -407,8 +407,9 @@ struct vmw_private {
void *fb_info;
enum vmw_display_unit_type active_display_unit;
struct vmw_legacy_display *ldu_priv;
- struct vmw_screen_object_display *sou_priv;
struct vmw_overlay *overlay_priv;
+ unsigned num_implicit;
+ struct vmw_framebuffer *implicit_fb;
/*
* Context and surface management.
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 29bec97..26c2e9e 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -2095,3 +2095,95 @@ int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
return 0;
}
+
+/**
+ * vmw_kms_del_active - unregister a crtc binding to the implicit framebuffer
+ *
+ * @dev_priv: Pointer to a device private struct.
+ * @du: The display unit of the crtc.
+ */
+void vmw_kms_del_active(struct vmw_private *dev_priv,
+ struct vmw_display_unit *du)
+{
+ lockdep_assert_held_once(&dev_priv->dev->mode_config.mutex);
+
+ if (du->active_implicit) {
+ if (--(dev_priv->num_implicit) == 0)
+ dev_priv->implicit_fb = NULL;
+ du->active_implicit = false;
+ }
+}
+
+/**
+ * vmw_kms_add_active - register a crtc binding to an implicit framebuffer
+ *
+ * @vmw_priv: Pointer to a device private struct.
+ * @du: The display unit of the crtc.
+ * @vfb: The implicit framebuffer
+ *
+ * Registers a binding to an implicit framebuffer.
+ */
+void vmw_kms_add_active(struct vmw_private *dev_priv,
+ struct vmw_display_unit *du,
+ struct vmw_framebuffer *vfb)
+{
+ lockdep_assert_held_once(&dev_priv->dev->mode_config.mutex);
+
+ WARN_ON_ONCE(!dev_priv->num_implicit && dev_priv->implicit_fb);
+
+ if (!du->active_implicit && du->is_implicit) {
+ dev_priv->implicit_fb = vfb;
+ du->active_implicit = true;
+ dev_priv->num_implicit++;
+ }
+}
+
+/**
+ * vmw_kms_screen_object_flippable - Check whether we can page-flip a crtc.
+ *
+ * @dev_priv: Pointer to device-private struct.
+ * @crtc: The crtc we want to flip.
+ *
+ * Returns true or false depending whether it's OK to flip this crtc
+ * based on the criterion that we must not have more than one implicit
+ * frame-buffer at any one time.
+ */
+bool vmw_kms_crtc_flippable(struct vmw_private *dev_priv,
+ struct drm_crtc *crtc)
+{
+ struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
+
+ lockdep_assert_held_once(&dev_priv->dev->mode_config.mutex);
+
+ if (!du->is_implicit)
+ return true;
+
+ if (dev_priv->num_implicit != 1)
+ return false;
+
+ return true;
+}
+
+/**
+ * vmw_kms_update_implicit_fb - Update the implicit fb.
+ *
+ * @dev_priv: Pointer to device-private struct.
+ * @crtc: The crtc the new implicit frame-buffer is bound to.
+ */
+void vmw_kms_update_implicit_fb(struct vmw_private *dev_priv,
+ struct drm_crtc *crtc)
+{
+ struct vmw_display_unit *du = vmw_crtc_to_du(crtc);
+ struct vmw_framebuffer *vfb;
+
+ lockdep_assert_held_once(&dev_priv->dev->mode_config.mutex);
+
+ if (!du->is_implicit)
+ return;
+
+ vfb = vmw_framebuffer_to_vfb(crtc->primary->fb);
+ WARN_ON_ONCE(dev_priv->num_implicit != 1 &&
+ dev_priv->implicit_fb != vfb);
+
+ dev_priv->implicit_fb = vfb;
+}
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
index d41928c..0b5c9ab 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
@@ -178,6 +178,7 @@ struct vmw_display_unit {
int gui_x;
int gui_y;
bool is_implicit;
+ bool active_implicit;
};
#define vmw_crtc_to_du(x) \
@@ -254,6 +255,17 @@ int vmw_kms_fbdev_init_data(struct vmw_private *dev_priv,
struct drm_crtc **p_crtc,
struct drm_display_mode **p_mode);
void vmw_guess_mode_timing(struct drm_display_mode *mode);
+void vmw_kms_del_active(struct vmw_private *dev_priv,
+ struct vmw_display_unit *du);
+void vmw_kms_add_active(struct vmw_private *dev_priv,
+ struct vmw_display_unit *du,
+ struct vmw_framebuffer *vfb);
+bool vmw_kms_crtc_flippable(struct vmw_private *dev_priv,
+ struct drm_crtc *crtc);
+void vmw_kms_update_implicit_fb(struct vmw_private *dev_priv,
+ struct drm_crtc *crtc);
+
+
/*
* Legacy display unit functions - vmwgfx_ldu.c
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
index c0de3b8..c11b196 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
@@ -74,19 +74,6 @@ struct vmw_kms_sou_dirty_cmd {
SVGA3dCmdBlitSurfaceToScreen body;
};
-
-/*
- * Other structs.
- */
-
-struct vmw_screen_object_display {
- unsigned num_implicit;
-
- struct vmw_framebuffer *implicit_fb;
- SVGAFifoCmdDefineGMRFB cur;
- struct vmw_dma_buffer *pinned_gmrfb;
-};
-
/**
* Display unit using screen objects.
*/
@@ -97,7 +84,6 @@ struct vmw_screen_object_unit {
struct vmw_dma_buffer *buffer; /**< Backing store buffer */
bool defined;
- bool active_implicit;
};
static void vmw_sou_destroy(struct vmw_screen_object_unit *sou)
@@ -116,33 +102,6 @@ static void vmw_sou_crtc_destroy(struct drm_crtc *crtc)
vmw_sou_destroy(vmw_crtc_to_sou(crtc));
}
-static void vmw_sou_del_active(struct vmw_private *vmw_priv,
- struct vmw_screen_object_unit *sou)
-{
- struct vmw_screen_object_display *ld = vmw_priv->sou_priv;
-
- if (sou->active_implicit) {
- if (--(ld->num_implicit) == 0)
- ld->implicit_fb = NULL;
- sou->active_implicit = false;
- }
-}
-
-static void vmw_sou_add_active(struct vmw_private *vmw_priv,
- struct vmw_screen_object_unit *sou,
- struct vmw_framebuffer *vfb)
-{
- struct vmw_screen_object_display *ld = vmw_priv->sou_priv;
-
- BUG_ON(!ld->num_implicit && ld->implicit_fb);
-
- if (!sou->active_implicit && sou->base.is_implicit) {
- ld->implicit_fb = vfb;
- sou->active_implicit = true;
- ld->num_implicit++;
- }
-}
-
/**
* Send the fifo command to create a screen.
*/
@@ -323,13 +282,13 @@ static int vmw_sou_crtc_set_config(struct drm_mode_set *set)
return -EINVAL;
}
- /* sou only supports one fb active at the time */
+ /* Only one active implicit frame-buffer at a time. */
if (sou->base.is_implicit &&
- dev_priv->sou_priv->implicit_fb && vfb &&
- !(dev_priv->sou_priv->num_implicit == 1 &&
- sou->active_implicit) &&
- dev_priv->sou_priv->implicit_fb != vfb) {
- DRM_ERROR("Multiple framebuffers not supported\n");
+ dev_priv->implicit_fb && vfb &&
+ !(dev_priv->num_implicit == 1 &&
+ sou->base.active_implicit) &&
+ dev_priv->implicit_fb != vfb) {
+ DRM_ERROR("Multiple implicit framebuffers not supported.\n");
return -EINVAL;
}
@@ -351,7 +310,7 @@ static int vmw_sou_crtc_set_config(struct drm_mode_set *set)
crtc->y = 0;
crtc->enabled = false;
- vmw_sou_del_active(dev_priv, sou);
+ vmw_kms_del_active(dev_priv, &sou->base);
vmw_sou_backing_free(dev_priv, sou);
@@ -415,7 +374,7 @@ static int vmw_sou_crtc_set_config(struct drm_mode_set *set)
return ret;
}
- vmw_sou_add_active(dev_priv, sou, vfb);
+ vmw_kms_add_active(dev_priv, &sou->base, vfb);
connector->encoder = encoder;
encoder->crtc = crtc;
@@ -428,39 +387,6 @@ static int vmw_sou_crtc_set_config(struct drm_mode_set *set)
return 0;
}
-/**
- * Returns if this unit can be page flipped.
- * Must be called with the mode_config mutex held.
- */
-static bool vmw_sou_screen_object_flippable(struct vmw_private *dev_priv,
- struct drm_crtc *crtc)
-{
- struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc);
-
- if (!sou->base.is_implicit)
- return true;
-
- if (dev_priv->sou_priv->num_implicit != 1)
- return false;
-
- return true;
-}
-
-/**
- * Update the implicit fb to the current fb of this crtc.
- * Must be called with the mode_config mutex held.
- */
-static void vmw_sou_update_implicit_fb(struct vmw_private *dev_priv,
- struct drm_crtc *crtc)
-{
- struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc);
-
- BUG_ON(!sou->base.is_implicit);
-
- dev_priv->sou_priv->implicit_fb =
- vmw_framebuffer_to_vfb(sou->base.crtc.primary->fb);
-}
-
static int vmw_sou_crtc_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event,
@@ -473,11 +399,7 @@ static int vmw_sou_crtc_page_flip(struct drm_crtc *crtc,
struct drm_vmw_rect vclips;
int ret;
- /* require ScreenObject support for page flipping */
- if (!dev_priv->sou_priv)
- return -ENOSYS;
-
- if (!vmw_sou_screen_object_flippable(dev_priv, crtc))
+ if (!vmw_kms_crtc_flippable(dev_priv, crtc))
return -EINVAL;
crtc->primary->fb = fb;
@@ -522,7 +444,7 @@ static int vmw_sou_crtc_page_flip(struct drm_crtc *crtc,
vmw_fence_obj_unreference(&fence);
if (vmw_crtc_to_du(crtc)->is_implicit)
- vmw_sou_update_implicit_fb(dev_priv, crtc);
+ vmw_kms_update_implicit_fb(dev_priv, crtc);
return ret;
@@ -587,8 +509,7 @@ static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit)
encoder = &sou->base.encoder;
connector = &sou->base.connector;
- sou->active_implicit = false;
-
+ sou->base.active_implicit = false;
sou->base.pref_active = (unit == 0);
sou->base.pref_width = dev_priv->initial_width;
sou->base.pref_height = dev_priv->initial_height;
@@ -623,11 +544,6 @@ int vmw_kms_sou_init_display(struct vmw_private *dev_priv)
struct drm_device *dev = dev_priv->dev;
int i, ret;
- if (dev_priv->sou_priv) {
- DRM_INFO("sou system already on\n");
- return -EINVAL;
- }
-
if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) {
DRM_INFO("Not using screen objects,"
" missing cap SCREEN_OBJECT_2\n");
@@ -635,16 +551,12 @@ int vmw_kms_sou_init_display(struct vmw_private *dev_priv)
}
ret = -ENOMEM;
- dev_priv->sou_priv = kmalloc(sizeof(*dev_priv->sou_priv), GFP_KERNEL);
- if (unlikely(!dev_priv->sou_priv))
- goto err_no_mem;
-
- dev_priv->sou_priv->num_implicit = 0;
- dev_priv->sou_priv->implicit_fb = NULL;
+ dev_priv->num_implicit = 0;
+ dev_priv->implicit_fb = NULL;
ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
if (unlikely(ret != 0))
- goto err_free;
+ return ret;
ret = drm_mode_create_dirty_info_property(dev);
if (unlikely(ret != 0))
@@ -661,10 +573,6 @@ int vmw_kms_sou_init_display(struct vmw_private *dev_priv)
err_vblank_cleanup:
drm_vblank_cleanup(dev);
-err_free:
- kfree(dev_priv->sou_priv);
- dev_priv->sou_priv = NULL;
-err_no_mem:
return ret;
}
@@ -672,13 +580,8 @@ int vmw_kms_sou_close_display(struct vmw_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
- if (!dev_priv->sou_priv)
- return -ENOSYS;
-
drm_vblank_cleanup(dev);
- kfree(dev_priv->sou_priv);
-
return 0;
}
--
2.5.0
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