drm/radeon/kms: more pm fixes

- disable gui idle interrupt use
  Seems to hang some r5xx chips
- move vbl range check into
  existing vbl check function in
  radeon_pm.c
- disable crtc mc acccess for the
  whole reclocking process

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

1 files changed, 37 insertions, 28 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 88163e043fcf..2eb675e78440 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -64,7 +64,7 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev, int static_switch)
         mutex_lock(&rdev->ddev->struct_mutex);
         mutex_lock(&rdev->vram_mutex);
         mutex_lock(&rdev->cp.mutex);
-
+#if 0
         /* wait for GPU idle */
         rdev->pm.gui_idle = false;
         rdev->irq.gui_idle = true;
@@ -74,7 +74,7 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev, int static_switch)
                 msecs_to_jiffies(RADEON_WAIT_IDLE_TIMEOUT));
         rdev->irq.gui_idle = false;
         radeon_irq_set(rdev);
-
+#endif
         radeon_unmap_vram_bos(rdev);
 
         if (!static_switch) {
@@ -85,7 +85,7 @@ static void radeon_pm_set_clocks(struct radeon_device *rdev, int static_switch)
                         }
                 }
         }
-        
+
         radeon_set_power_state(rdev, static_switch);
 
         if (!static_switch) {
@@ -389,51 +389,57 @@ void radeon_pm_compute_clocks(struct radeon_device *rdev)
 
 bool radeon_pm_in_vbl(struct radeon_device *rdev)
 {
-        u32 stat_crtc = 0;
+        u32 stat_crtc = 0, vbl = 0, position = 0;
         bool in_vbl = true;
 
         if (ASIC_IS_DCE4(rdev)) {
                 if (rdev->pm.active_crtcs & (1 << 0)) {
-                        stat_crtc = RREG32(EVERGREEN_CRTC_STATUS + EVERGREEN_CRTC0_REGISTER_OFFSET);
-                        if (!(stat_crtc & 1))
-                                in_vbl = false;
+                        vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
+                                     EVERGREEN_CRTC0_REGISTER_OFFSET) & 0xfff;
+                        position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
+                                          EVERGREEN_CRTC0_REGISTER_OFFSET) & 0xfff;
                 }
                 if (rdev->pm.active_crtcs & (1 << 1)) {
-                        stat_crtc = RREG32(EVERGREEN_CRTC_STATUS + EVERGREEN_CRTC1_REGISTER_OFFSET);
-                        if (!(stat_crtc & 1))
-                                in_vbl = false;
+                        vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
+                                     EVERGREEN_CRTC1_REGISTER_OFFSET) & 0xfff;
+                        position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
+                                          EVERGREEN_CRTC1_REGISTER_OFFSET) & 0xfff;
                 }
                 if (rdev->pm.active_crtcs & (1 << 2)) {
-                        stat_crtc = RREG32(EVERGREEN_CRTC_STATUS + EVERGREEN_CRTC2_REGISTER_OFFSET);
-                        if (!(stat_crtc & 1))
-                                in_vbl = false;
+                        vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
+                                     EVERGREEN_CRTC2_REGISTER_OFFSET) & 0xfff;
+                        position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
+                                          EVERGREEN_CRTC2_REGISTER_OFFSET) & 0xfff;
                 }
                 if (rdev->pm.active_crtcs & (1 << 3)) {
-                        stat_crtc = RREG32(EVERGREEN_CRTC_STATUS + EVERGREEN_CRTC3_REGISTER_OFFSET);
-                        if (!(stat_crtc & 1))
-                                in_vbl = false;
+                        vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
+                                     EVERGREEN_CRTC3_REGISTER_OFFSET) & 0xfff;
+                        position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
+                                          EVERGREEN_CRTC3_REGISTER_OFFSET) & 0xfff;
                 }
                 if (rdev->pm.active_crtcs & (1 << 4)) {
-                        stat_crtc = RREG32(EVERGREEN_CRTC_STATUS + EVERGREEN_CRTC4_REGISTER_OFFSET);
-                        if (!(stat_crtc & 1))
-                                in_vbl = false;
+                        vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
+                                     EVERGREEN_CRTC4_REGISTER_OFFSET) & 0xfff;
+                        position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
+                                          EVERGREEN_CRTC4_REGISTER_OFFSET) & 0xfff;
                 }
                 if (rdev->pm.active_crtcs & (1 << 5)) {
-                        stat_crtc = RREG32(EVERGREEN_CRTC_STATUS + EVERGREEN_CRTC5_REGISTER_OFFSET);
-                        if (!(stat_crtc & 1))
-                                in_vbl = false;
+                        vbl = RREG32(EVERGREEN_CRTC_V_BLANK_START_END +
+                                     EVERGREEN_CRTC5_REGISTER_OFFSET) & 0xfff;
+                        position = RREG32(EVERGREEN_CRTC_STATUS_POSITION +
+                                          EVERGREEN_CRTC5_REGISTER_OFFSET) & 0xfff;
                 }
         } else if (ASIC_IS_AVIVO(rdev)) {
                 if (rdev->pm.active_crtcs & (1 << 0)) {
-                        stat_crtc = RREG32(D1CRTC_STATUS);
-                        if (!(stat_crtc & 1))
-                                in_vbl = false;
+                        vbl = RREG32(AVIVO_D1CRTC_V_BLANK_START_END) & 0xfff;
+                        position = RREG32(AVIVO_D1CRTC_STATUS_POSITION) & 0xfff;
                 }
                 if (rdev->pm.active_crtcs & (1 << 1)) {
-                        stat_crtc = RREG32(D2CRTC_STATUS);
-                        if (!(stat_crtc & 1))
-                                in_vbl = false;
+                        vbl = RREG32(AVIVO_D2CRTC_V_BLANK_START_END) & 0xfff;
+                        position = RREG32(AVIVO_D2CRTC_STATUS_POSITION) & 0xfff;
                 }
+                if (position < vbl && position > 1)
+                        in_vbl = false;
         } else {
                 if (rdev->pm.active_crtcs & (1 << 0)) {
                         stat_crtc = RREG32(RADEON_CRTC_STATUS);
@@ -447,6 +453,9 @@ bool radeon_pm_in_vbl(struct radeon_device *rdev)
                 }
         }
 
+        if (position < vbl && position > 1)
+                in_vbl = false;
+
         return in_vbl;
 }