Use both up/down manual ei calcuations for symmetry and greater
flexibility for reclocking, instead of faking the down interrupt based
on a fixed integer number of up interrupts.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 2 --
drivers/gpu/drm/i915/i915_irq.c | 15 ++-------------
drivers/gpu/drm/i915/i915_reg.h | 1 -
drivers/gpu/drm/i915/intel_pm.c | 5 ++---
4 files changed, 4 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index daee71ef201d..149015b5cb24 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -937,8 +937,6 @@ struct intel_gen6_power_mgmt {
u8 rp1_freq; /* "less than" RP0 power/freqency */
u8 rp0_freq; /* Non-overclocked max frequency. */
- u32 ei_interrupt_count;
-
int last_adj;
enum { LOW_POWER, BETWEEN, HIGH_POWER } power;
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 2db5dbb87ced..43bd40cc75a6 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -1308,7 +1308,6 @@ void gen6_rps_reset_ei(struct drm_i915_private *dev_priv)
{
vlv_c0_read(dev_priv, &dev_priv->rps.down_ei);
dev_priv->rps.up_ei = dev_priv->rps.down_ei;
- dev_priv->rps.ei_interrupt_count = 0;
}
static u32 vlv_wa_c0_ei(struct drm_i915_private *dev_priv, u32 pm_iir)
@@ -1316,21 +1315,11 @@ static u32 vlv_wa_c0_ei(struct drm_i915_private *dev_priv, u32 pm_iir)
struct intel_rps_ei now;
u32 events = 0;
- if ((pm_iir & GEN6_PM_RP_UP_EI_EXPIRED) == 0)
+ if ((pm_iir & (GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_UP_EI_EXPIRED)) == 0)
return 0;
vlv_c0_read(dev_priv, &now);
- /*
- * To down throttle, C0 residency should be less than down threshold
- * for continous EI intervals. So calculate down EI counters
- * once in VLV_INT_COUNT_FOR_DOWN_EI
- */
- if (++dev_priv->rps.ei_interrupt_count >= VLV_INT_COUNT_FOR_DOWN_EI) {
- pm_iir |= GEN6_PM_RP_DOWN_EI_EXPIRED;
- dev_priv->rps.ei_interrupt_count = 0;
- }
-
if (pm_iir & GEN6_PM_RP_DOWN_EI_EXPIRED) {
if (!vlv_c0_above(dev_priv,
&dev_priv->rps.down_ei, &now,
@@ -4551,7 +4540,7 @@ void intel_irq_init(struct drm_device *dev)
/* Let's track the enabled rps events */
if (IS_VALLEYVIEW(dev))
/* WaGsvRC0ResidenncyMethod:VLV */
- dev_priv->pm_rps_events = GEN6_PM_RP_UP_EI_EXPIRED;
+ dev_priv->pm_rps_events = GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_UP_EI_EXPIRED;
else
dev_priv->pm_rps_events = GEN6_PM_RPS_EVENTS;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 66de6e3e99bf..5571f7714f78 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -566,7 +566,6 @@ enum punit_power_well {
#define VLV_CZ_CLOCK_TO_MILLI_SEC 100000
#define VLV_RP_UP_EI_THRESHOLD 90
#define VLV_RP_DOWN_EI_THRESHOLD 70
-#define VLV_INT_COUNT_FOR_DOWN_EI 5
/* vlv2 north clock has */
#define CCK_FUSE_REG 0x8
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index eb6c54a5b112..f29c643c9926 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3179,11 +3179,10 @@ static u32 gen6_rps_pm_mask(struct drm_i915_private *dev_priv, u8 val)
u32 mask = 0;
if (val > dev_priv->rps.min_freq_softlimit)
- mask |= GEN6_PM_RP_DOWN_THRESHOLD | GEN6_PM_RP_DOWN_TIMEOUT;
+ mask |= GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_DOWN_THRESHOLD | GEN6_PM_RP_DOWN_TIMEOUT;
if (val < dev_priv->rps.max_freq_softlimit)
- mask |= GEN6_PM_RP_UP_THRESHOLD;
+ mask |= GEN6_PM_RP_UP_EI_EXPIRED | GEN6_PM_RP_UP_THRESHOLD;
- mask |= dev_priv->pm_rps_events & (GEN6_PM_RP_DOWN_EI_EXPIRED | GEN6_PM_RP_UP_EI_EXPIRED);
mask &= dev_priv->pm_rps_events;
/* IVB and SNB hard hangs on looping batchbuffer
--
2.0.1
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