drm/radeon/kms/evergreen: set accel_enabled

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.

[this fixes a regression with older userspaces on newer kernels].

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 0440c09..49c94ae 100644 (file)
--- 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 (file)
--- 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 (file)
--- 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 (file)
--- 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;