On Tue, 24 Oct 2017 12:41:13 +0200, Sagar Arun Kamble
<sagar.a.kamble@xxxxxxxxx> wrote:
PM interrupt register offsets are constant per platforms and saving those
in device info is more appropriate than getting those through functions.
This patch removes functions gen6_pm_iir/imr/ier and saves those offsets
in device info.
v2: Use INTEL_INFO() to access device info. (Chris)
Suggested-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 5 +++++
drivers/gpu/drm/i915/i915_irq.c | 31
+++++++++----------------------
drivers/gpu/drm/i915/intel_device_info.c | 11 +++++++++++
3 files changed, 25 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h
b/drivers/gpu/drm/i915/i915_drv.h
index 54b5d4c..2f77d26 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -888,6 +888,11 @@ struct intel_device_info {
u16 degamma_lut_size;
u16 gamma_lut_size;
} color;
+
+ /* PM interrupt register offsets */
+ i915_reg_t pm_iir_offset;
+ i915_reg_t pm_imr_offset;
+ i915_reg_t pm_ier_offset;
};
struct intel_display_error_state;
diff --git a/drivers/gpu/drm/i915/i915_irq.c
b/drivers/gpu/drm/i915/i915_irq.c
index b1296a5..5d448af 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -306,21 +306,6 @@ void gen5_disable_gt_irq(struct drm_i915_private
*dev_priv, uint32_t mask)
ilk_update_gt_irq(dev_priv, mask, 0);
}
-static i915_reg_t gen6_pm_iir(struct drm_i915_private *dev_priv)
-{
- return INTEL_GEN(dev_priv) >= 8 ? GEN8_GT_IIR(2) : GEN6_PMIIR;
-}
-
-static i915_reg_t gen6_pm_imr(struct drm_i915_private *dev_priv)
-{
- return INTEL_GEN(dev_priv) >= 8 ? GEN8_GT_IMR(2) : GEN6_PMIMR;
-}
-
-static i915_reg_t gen6_pm_ier(struct drm_i915_private *dev_priv)
-{
- return INTEL_GEN(dev_priv) >= 8 ? GEN8_GT_IER(2) : GEN6_PMIER;
-}
-
btw, if you keep these functions but modify them into:
return INTEL_INFO(dev_priv)->pm_xxx_offset;
then most of below changes will not be needed
/**
* snb_update_pm_irq - update GEN6_PMIMR
* @dev_priv: driver private
@@ -332,6 +317,7 @@ static void snb_update_pm_irq(struct
drm_i915_private *dev_priv,
uint32_t enabled_irq_mask)
{
uint32_t new_val;
+ i915_reg_t reg = INTEL_INFO(dev_priv)->pm_imr_offset;
s/reg/imr ?
WARN_ON(enabled_irq_mask & ~interrupt_mask);
@@ -343,8 +329,8 @@ static void snb_update_pm_irq(struct
drm_i915_private *dev_priv,
if (new_val != dev_priv->pm_imr) {
dev_priv->pm_imr = new_val;
- I915_WRITE(gen6_pm_imr(dev_priv), dev_priv->pm_imr);
- POSTING_READ(gen6_pm_imr(dev_priv));
+ I915_WRITE(reg, dev_priv->pm_imr);
+ POSTING_READ(reg);
}
}
@@ -371,7 +357,7 @@ void gen6_mask_pm_irq(struct drm_i915_private
*dev_priv, u32 mask)
static void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32
reset_mask)
{
- i915_reg_t reg = gen6_pm_iir(dev_priv);
+ i915_reg_t reg = INTEL_INFO(dev_priv)->pm_iir_offset;
s/reg/iir ?
lockdep_assert_held(&dev_priv->irq_lock);
@@ -385,7 +371,7 @@ static void gen6_enable_pm_irq(struct
drm_i915_private *dev_priv, u32 enable_mas
lockdep_assert_held(&dev_priv->irq_lock);
dev_priv->pm_ier |= enable_mask;
- I915_WRITE(gen6_pm_ier(dev_priv), dev_priv->pm_ier);
+ I915_WRITE(INTEL_INFO(dev_priv)->pm_ier_offset, dev_priv->pm_ier);
gen6_unmask_pm_irq(dev_priv, enable_mask);
/* unmask_pm_irq provides an implicit barrier (POSTING_READ) */
}
@@ -396,7 +382,7 @@ static void gen6_disable_pm_irq(struct
drm_i915_private *dev_priv, u32 disable_m
dev_priv->pm_ier &= ~disable_mask;
__gen6_mask_pm_irq(dev_priv, disable_mask);
- I915_WRITE(gen6_pm_ier(dev_priv), dev_priv->pm_ier);
+ I915_WRITE(INTEL_INFO(dev_priv)->pm_ier_offset, dev_priv->pm_ier);
/* though a barrier is missing here, but don't really need a one */
}
@@ -417,7 +403,8 @@ void gen6_enable_rps_interrupts(struct
drm_i915_private *dev_priv)
spin_lock_irq(&dev_priv->irq_lock);
WARN_ON_ONCE(rps->pm_iir);
- WARN_ON_ONCE(I915_READ(gen6_pm_iir(dev_priv)) &
dev_priv->pm_rps_events);
+ WARN_ON_ONCE(I915_READ(INTEL_INFO(dev_priv)->pm_iir_offset) &
+ dev_priv->pm_rps_events);
Can you define separate iir_reg variable as in above functions to simplify
this nested statement ?
rps->interrupts_enabled = true;
gen6_enable_pm_irq(dev_priv, dev_priv->pm_rps_events);
@@ -461,7 +448,7 @@ void gen9_enable_guc_interrupts(struct
drm_i915_private *dev_priv)
{
spin_lock_irq(&dev_priv->irq_lock);
if (!dev_priv->guc.interrupts_enabled) {
- WARN_ON_ONCE(I915_READ(gen6_pm_iir(dev_priv)) &
+ WARN_ON_ONCE(I915_READ(INTEL_INFO(dev_priv)->pm_iir_offset) &
dev_priv->pm_guc_events);
dev_priv->guc.interrupts_enabled = true;
gen6_enable_pm_irq(dev_priv, dev_priv->pm_guc_events);
diff --git a/drivers/gpu/drm/i915/intel_device_info.c
b/drivers/gpu/drm/i915/intel_device_info.c
index 875d428..d1a4911 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -462,4 +462,15 @@ void intel_device_info_runtime_init(struct
drm_i915_private *dev_priv)
info->sseu.has_subslice_pg ? "y" : "n");
DRM_DEBUG_DRIVER("has EU power gating: %s\n",
info->sseu.has_eu_pg ? "y" : "n");
+
+ /* Initialize PM interrupt register offsets */
+ if (INTEL_GEN(dev_priv) >= 8) {
+ info->pm_iir_offset = GEN8_GT_IIR(2);
+ info->pm_imr_offset = GEN8_GT_IMR(2);
+ info->pm_ier_offset = GEN8_GT_IER(2);
+ } else {
+ info->pm_iir_offset = GEN6_PMIIR;
+ info->pm_imr_offset = GEN6_PMIMR;
+ info->pm_ier_offset = GEN6_PMIER;
+ }
}
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