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drm/i915: Separate RPS and RC6 handling for VLV

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This patch separates enable/disable of RC6 and RPS for VLV.

v2: Removed unnecessary comments about forcewakes while enabling
RC6/RPS. Added changes to output turbo control status for VLV in
i915_frequency_info.

Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/1507360055-19948-5-git-send-email-sagar.a.kamble@intel.com
Acked-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171010213010.7415-4-chris@chris-wilson.co.uk
This commit is contained in:
Sagar Arun Kamble
2017-10-10 22:30:02 +01:00
committed by Chris Wilson
parent 3a85392c0e
commit 0d6fc92a73
2 changed files with 58 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

75
drivers/gpu/drm/i915/intel_pm.c
View File

@@ -6350,9 +6350,9 @@ static void cherryview_disable_rps(struct drm_i915_private *dev_priv)
I915_WRITE(GEN6_RC_CONTROL, 0);
}
static void valleyview_disable_rps(struct drm_i915_private *dev_priv)
static void valleyview_disable_rc6(struct drm_i915_private *dev_priv)
{
/* we're doing forcewake before Disabling RC6,
/* We're doing forcewake before Disabling RC6,
* This what the BIOS expects when going into suspend */
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
@@ -6361,6 +6361,11 @@ static void valleyview_disable_rps(struct drm_i915_private *dev_priv)
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
}
static void valleyview_disable_rps(struct drm_i915_private *dev_priv)
{
I915_WRITE(GEN6_RP_CONTROL, 0);
}
static void intel_print_rc6_info(struct drm_i915_private *dev_priv, u32 mode)
{
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
@@ -7283,11 +7288,11 @@ static void cherryview_enable_rps(struct drm_i915_private *dev_priv)
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
}
static void valleyview_enable_rps(struct drm_i915_private *dev_priv)
static void valleyview_enable_rc6(struct drm_i915_private *dev_priv)
{
struct intel_engine_cs *engine;
enum intel_engine_id id;
u32 gtfifodbg, val, rc6_mode = 0;
u32 gtfifodbg, rc6_mode = 0;
WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock));
@@ -7300,12 +7305,46 @@ static void valleyview_enable_rps(struct drm_i915_private *dev_priv)
I915_WRITE(GTFIFODBG, gtfifodbg);
}
/* If VLV, Forcewake all wells, else re-direct to regular path */
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
/* Disable RC states. */
I915_WRITE(GEN6_RC_CONTROL, 0);
I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 0x00280000);
I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000);
I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25);
for_each_engine(engine, dev_priv, id)
I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10);
I915_WRITE(GEN6_RC6_THRESHOLD, 0x557);
/* Allows RC6 residency counter to work */
I915_WRITE(VLV_COUNTER_CONTROL,
_MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH |
VLV_MEDIA_RC0_COUNT_EN |
VLV_RENDER_RC0_COUNT_EN |
VLV_MEDIA_RC6_COUNT_EN |
VLV_RENDER_RC6_COUNT_EN));
if (intel_enable_rc6() & INTEL_RC6_ENABLE)
rc6_mode = GEN7_RC_CTL_TO_MODE | VLV_RC_CTL_CTX_RST_PARALLEL;
intel_print_rc6_info(dev_priv, rc6_mode);
I915_WRITE(GEN6_RC_CONTROL, rc6_mode);
intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
}
static void valleyview_enable_rps(struct drm_i915_private *dev_priv)
{
u32 val;
WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock));
intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000);
I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400);
I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000);
@@ -7322,30 +7361,6 @@ static void valleyview_enable_rps(struct drm_i915_private *dev_priv)
GEN6_RP_UP_BUSY_AVG |
GEN6_RP_DOWN_IDLE_CONT);
I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 0x00280000);
I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000);
I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25);
for_each_engine(engine, dev_priv, id)
I915_WRITE(RING_MAX_IDLE(engine->mmio_base), 10);
I915_WRITE(GEN6_RC6_THRESHOLD, 0x557);
/* allows RC6 residency counter to work */
I915_WRITE(VLV_COUNTER_CONTROL,
_MASKED_BIT_ENABLE(VLV_COUNT_RANGE_HIGH |
VLV_MEDIA_RC0_COUNT_EN |
VLV_RENDER_RC0_COUNT_EN |
VLV_MEDIA_RC6_COUNT_EN |
VLV_RENDER_RC6_COUNT_EN));
if (intel_enable_rc6() & INTEL_RC6_ENABLE)
rc6_mode = GEN7_RC_CTL_TO_MODE | VLV_RC_CTL_CTX_RST_PARALLEL;
intel_print_rc6_info(dev_priv, rc6_mode);
I915_WRITE(GEN6_RC_CONTROL, rc6_mode);
/* Setting Fixed Bias */
val = VLV_OVERRIDE_EN |
VLV_SOC_TDP_EN |
@@ -7945,6 +7960,7 @@ void intel_disable_gt_powersave(struct drm_i915_private *dev_priv)
} else if (IS_CHERRYVIEW(dev_priv)) {
cherryview_disable_rps(dev_priv);
} else if (IS_VALLEYVIEW(dev_priv)) {
valleyview_disable_rc6(dev_priv);
valleyview_disable_rps(dev_priv);
} else if (INTEL_GEN(dev_priv) >= 6) {
gen6_disable_rc6(dev_priv);
@@ -7974,6 +7990,7 @@ void intel_enable_gt_powersave(struct drm_i915_private *dev_priv)
if (IS_CHERRYVIEW(dev_priv)) {
cherryview_enable_rps(dev_priv);
} else if (IS_VALLEYVIEW(dev_priv)) {
valleyview_enable_rc6(dev_priv);
valleyview_enable_rps(dev_priv);
} else if (INTEL_GEN(dev_priv) >= 9) {
gen9_enable_rc6(dev_priv);