diff mbox

[07/16] drm/i915: crc support for hsw

Message ID 1381956961-16875-8-git-send-email-daniel.vetter@ffwll.ch (mailing list archive)
State New, archived
Headers show

Commit Message

Daniel Vetter Oct. 16, 2013, 8:55 p.m. UTC 
hw designers decided to change the CRC registers and coalesce them all
into one. Otherwise nothing changed. I've opted for a new hsw_ version
to grab the crc sample since hsw+1 will have the same crc registers,
but different interrupt source registers. So this little helper
function will come handy there.

Also refactor the display error handler with a neat pipe loop.

v2: Use for_each_pipe.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/i915/i915_debugfs.c |  2 +-
 drivers/gpu/drm/i915/i915_irq.c     | 44 +++++++++++++++++++++----------------
 drivers/gpu/drm/i915/i915_reg.h     |  1 +
 3 files changed, 27 insertions(+), 20 deletions(-)

Comments

Lespiau, Damien Oct. 17, 2013, 10:53 a.m. UTC | #1 
On Wed, Oct 16, 2013 at 10:55:52PM +0200, Daniel Vetter wrote:
> hw designers decided to change the CRC registers and coalesce them all
> into one. Otherwise nothing changed. I've opted for a new hsw_ version
> to grab the crc sample since hsw+1 will have the same crc registers,
> but different interrupt source registers. So this little helper
> function will come handy there.
> 
> Also refactor the display error handler with a neat pipe loop.
> 
> v2: Use for_each_pipe.
> 
> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Patches 1-7 are:

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Daniel Vetter Oct. 17, 2013, 1:06 p.m. UTC | #2 
On Thu, Oct 17, 2013 at 11:53:49AM +0100, Damien Lespiau wrote:
> On Wed, Oct 16, 2013 at 10:55:52PM +0200, Daniel Vetter wrote:
> > hw designers decided to change the CRC registers and coalesce them all
> > into one. Otherwise nothing changed. I've opted for a new hsw_ version
> > to grab the crc sample since hsw+1 will have the same crc registers,
> > but different interrupt source registers. So this little helper
> > function will come handy there.
> > 
> > Also refactor the display error handler with a neat pipe loop.
> > 
> > v2: Use for_each_pipe.
> > 
> > Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> 
> Patches 1-7 are:
> 
> Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>

Thanks for the review, I've merged the patches thus far.
-Daniel
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index bb55046..59c7653 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1997,7 +1997,7 @@  static int pipe_crc_set_source(struct drm_device *dev, enum pipe pipe,
 	u32 val;
 	int ret;
 
-	if (!(IS_IVYBRIDGE(dev) || IS_GEN5(dev) || IS_GEN6(dev)))
+	if (!(INTEL_INFO(dev)->gen >= 5 && !IS_VALLEYVIEW(dev)))
 		return -ENODEV;
 
 	if (pipe_crc->source == source)
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index eaf1268..156a1a4 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1228,6 +1228,15 @@  static void display_pipe_crc_update(struct drm_device *dev, enum pipe pipe,
 	wake_up_interruptible(&pipe_crc->wq);
 }
 
+static void hsw_pipe_crc_update(struct drm_device *dev, enum pipe pipe)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+
+	display_pipe_crc_update(dev, pipe,
+				I915_READ(PIPE_CRC_RES_1_IVB(pipe)),
+				0, 0, 0, 0);
+}
+
 static void ivb_pipe_crc_update(struct drm_device *dev, enum pipe pipe)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
@@ -1252,6 +1261,7 @@  static void ilk_pipe_crc_update(struct drm_device *dev, enum pipe pipe)
 				I915_READ(PIPE_CRC_RES_RES2_ILK(pipe)));
 }
 #else
+static inline void hsw_pipe_crc_update(struct drm_device *dev, int pipe) {}
 static inline void ivb_pipe_crc_update(struct drm_device *dev, int pipe) {}
 static inline void ilk_pipe_crc_update(struct drm_device *dev, int pipe) {}
 #endif
@@ -1418,30 +1428,26 @@  static void ivb_err_int_handler(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 	u32 err_int = I915_READ(GEN7_ERR_INT);
+	enum pipe pipe;
 
 	if (err_int & ERR_INT_POISON)
 		DRM_ERROR("Poison interrupt\n");
 
-	if (err_int & ERR_INT_FIFO_UNDERRUN_A)
-		if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_A, false))
-			DRM_DEBUG_DRIVER("Pipe A FIFO underrun\n");
-
-	if (err_int & ERR_INT_FIFO_UNDERRUN_B)
-		if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_B, false))
-			DRM_DEBUG_DRIVER("Pipe B FIFO underrun\n");
-
-	if (err_int & ERR_INT_FIFO_UNDERRUN_C)
-		if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_C, false))
-			DRM_DEBUG_DRIVER("Pipe C FIFO underrun\n");
-
-	if (err_int & ERR_INT_PIPE_CRC_DONE_A)
-		ivb_pipe_crc_update(dev, PIPE_A);
-
-	if (err_int & ERR_INT_PIPE_CRC_DONE_B)
-		ivb_pipe_crc_update(dev, PIPE_B);
+	for_each_pipe(pipe) {
+		if (err_int & ERR_INT_FIFO_UNDERRUN(pipe)) {
+			if (intel_set_cpu_fifo_underrun_reporting(dev, pipe,
+								  false))
+				DRM_DEBUG_DRIVER("Pipe %c FIFO underrun\n",
+						 pipe_name(pipe));
+		}
 
-	if (err_int & ERR_INT_PIPE_CRC_DONE_C)
-		ivb_pipe_crc_update(dev, PIPE_C);
+		if (err_int & ERR_INT_PIPE_CRC_DONE(pipe)) {
+			if (IS_IVYBRIDGE(dev))
+				ivb_pipe_crc_update(dev, pipe);
+			else
+				hsw_pipe_crc_update(dev, pipe);
+		}
+	}
 
 	I915_WRITE(GEN7_ERR_INT, err_int);
 }
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 8a62720..cf277ac 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -728,6 +728,7 @@ 
 #define   ERR_INT_PIPE_CRC_DONE_B	(1<<5)
 #define   ERR_INT_FIFO_UNDERRUN_B	(1<<3)
 #define   ERR_INT_PIPE_CRC_DONE_A	(1<<2)
+#define   ERR_INT_PIPE_CRC_DONE(pipe)	(1<<(2 + pipe*3))
 #define   ERR_INT_FIFO_UNDERRUN_A	(1<<0)
 #define   ERR_INT_FIFO_UNDERRUN(pipe)	(1<<(pipe*3))