[PATCH] drm/radeon/kms/evergreen: set accel_enabled

[Alex Deucher]

This is needed to enable accel in the ddx.  However,
due to a bug in older versions of the ddx, it relies
on accel being disabled in order to load properly on
evergreen chips.  To maintain compatility, we add a new
get accel param and call that from the ddx.  The old one
always returns false for evergreen cards.

Signed-off-by: Alex Deucher <alexdeucher at gmail.com>
---
 drivers/gpu/drm/radeon/evergreen.c  |    2 +-
 drivers/gpu/drm/radeon/radeon_drv.c |    3 ++-
 drivers/gpu/drm/radeon/radeon_kms.c |    9 ++++++++-
 include/drm/radeon_drm.h            |    1 +
 4 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 0440c09..49c94ae 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2153,7 +2153,7 @@ int evergreen_init(struct radeon_device *rdev)
 	if (r)
 		return r;
 
-	rdev->accel_working = false;
+	rdev->accel_working = true;
 	r = evergreen_startup(rdev);
 	if (r) {
 		dev_err(rdev->dev, "disabling GPU acceleration\n");
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index 902d173..e166fe4 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -45,9 +45,10 @@
  * - 2.2.0 - add r6xx/r7xx const buffer support
  * - 2.3.0 - add MSPOS + 3D texture + r500 VAP regs
  * - 2.4.0 - add crtc id query
+ * - 2.5.0 - add get accel 2 to work around ddx breakage for evergreen
  */
 #define KMS_DRIVER_MAJOR	2
-#define KMS_DRIVER_MINOR	4
+#define KMS_DRIVER_MINOR	5
 #define KMS_DRIVER_PATCHLEVEL	0
 int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags);
 int radeon_driver_unload_kms(struct drm_device *dev);
diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 0406835..6a70c0d 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -118,7 +118,11 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 		value = rdev->num_z_pipes;
 		break;
 	case RADEON_INFO_ACCEL_WORKING:
-		value = rdev->accel_working;
+		/* xf86-video-ati 6.13.0 relies on this being false for evergreen */
+		if ((rdev->family >= CHIP_CEDAR) && (rdev->family <= CHIP_HEMLOCK))
+			value = false;
+		else
+			value = rdev->accel_working;
 		break;
 	case RADEON_INFO_CRTC_FROM_ID:
 		for (i = 0, found = 0; i < rdev->num_crtc; i++) {
@@ -134,6 +138,9 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 			return -EINVAL;
 		}
 		break;
+	case RADEON_INFO_ACCEL_WORKING2:
+		value = rdev->accel_working;
+		break;
 	default:
 		DRM_DEBUG("Invalid request %d\n", info->request);
 		return -EINVAL;
diff --git a/include/drm/radeon_drm.h b/include/drm/radeon_drm.h
index 3ff9fc0..5347063 100644
--- a/include/drm/radeon_drm.h
+++ b/include/drm/radeon_drm.h
@@ -903,6 +903,7 @@ struct drm_radeon_cs {
 #define RADEON_INFO_NUM_Z_PIPES 	0x02
 #define RADEON_INFO_ACCEL_WORKING	0x03
 #define RADEON_INFO_CRTC_FROM_ID	0x04
+#define RADEON_INFO_ACCEL_WORKING2	0x05
 
 struct drm_radeon_info {
 	uint32_t		request;
-- 
1.7.0.1