From: Akash Goel Date: Wed, 12 Oct 2016 16:24:30 +0000 (+0530) Subject: drm/i915: Add low level set of routines for programming PM IER/IIR/IMR register set X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f4e9af4f5af5dab9aee632f3aff0bd8040f1b2c5;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/i915: Add low level set of routines for programming PM IER/IIR/IMR register set So far PM IER/IIR/IMR registers were being used only for Turbo related interrupts. But interrupts coming from GuC also use the same set. As a precursor to supporting GuC interrupts, added new low level routines so as to allow sharing the programming of PM IER/IIR/IMR registers between Turbo & GuC. Also similar to PM IMR, maintaining a bitmask for PM IER register, to allow easy sharing of it between Turbo & GuC without involving a rmw operation. v2: - For appropriateness & avoid any ambiguity, rename old functions enable/disable pm_irq to mask/unmask pm_irq and rename new functions enable/disable pm_interrupts to enable/disable pm_irq. (Tvrtko) - Use u32 in place of uint32_t. (Tvrtko) v3: - Rename the fields pm_irq_mask & pm_ier_mask and do some cleanup. (Chris) - Rebase. v4: Fix the inadvertent disabling of User interrupt for VECS ring causing failure for certain IGTs. v5: Use dev_priv with HAS_VEBOX macro. (Tvrtko) Suggested-by: Chris Wilson Signed-off-by: Akash Goel Reviewed-by: Tvrtko Ursulin Signed-off-by: Tvrtko Ursulin --- diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index dd3acabb7edb..58d332bda227 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1836,7 +1836,8 @@ struct drm_i915_private { u32 de_irq_mask[I915_MAX_PIPES]; }; u32 gt_irq_mask; - u32 pm_irq_mask; + u32 pm_imr; + u32 pm_ier; u32 pm_rps_events; u32 pipestat_irq_mask[I915_MAX_PIPES]; diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 23315e5461bf..6412aac74346 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -303,18 +303,18 @@ static void snb_update_pm_irq(struct drm_i915_private *dev_priv, assert_spin_locked(&dev_priv->irq_lock); - new_val = dev_priv->pm_irq_mask; + new_val = dev_priv->pm_imr; new_val &= ~interrupt_mask; new_val |= (~enabled_irq_mask & interrupt_mask); - if (new_val != dev_priv->pm_irq_mask) { - dev_priv->pm_irq_mask = new_val; - I915_WRITE(gen6_pm_imr(dev_priv), dev_priv->pm_irq_mask); + 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)); } } -void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask) +void gen6_unmask_pm_irq(struct drm_i915_private *dev_priv, u32 mask) { if (WARN_ON(!intel_irqs_enabled(dev_priv))) return; @@ -322,28 +322,54 @@ void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask) snb_update_pm_irq(dev_priv, mask, mask); } -static void __gen6_disable_pm_irq(struct drm_i915_private *dev_priv, - uint32_t mask) +static void __gen6_mask_pm_irq(struct drm_i915_private *dev_priv, u32 mask) { snb_update_pm_irq(dev_priv, mask, 0); } -void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask) +void gen6_mask_pm_irq(struct drm_i915_private *dev_priv, u32 mask) { if (WARN_ON(!intel_irqs_enabled(dev_priv))) return; - __gen6_disable_pm_irq(dev_priv, mask); + __gen6_mask_pm_irq(dev_priv, mask); } -void gen6_reset_rps_interrupts(struct drm_i915_private *dev_priv) +void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32 reset_mask) { i915_reg_t reg = gen6_pm_iir(dev_priv); - spin_lock_irq(&dev_priv->irq_lock); - I915_WRITE(reg, dev_priv->pm_rps_events); - I915_WRITE(reg, dev_priv->pm_rps_events); + assert_spin_locked(&dev_priv->irq_lock); + + I915_WRITE(reg, reset_mask); + I915_WRITE(reg, reset_mask); POSTING_READ(reg); +} + +void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, u32 enable_mask) +{ + assert_spin_locked(&dev_priv->irq_lock); + + dev_priv->pm_ier |= enable_mask; + I915_WRITE(gen6_pm_ier(dev_priv), dev_priv->pm_ier); + gen6_unmask_pm_irq(dev_priv, enable_mask); + /* unmask_pm_irq provides an implicit barrier (POSTING_READ) */ +} + +void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, u32 disable_mask) +{ + assert_spin_locked(&dev_priv->irq_lock); + + 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); + /* though a barrier is missing here, but don't really need a one */ +} + +void gen6_reset_rps_interrupts(struct drm_i915_private *dev_priv) +{ + spin_lock_irq(&dev_priv->irq_lock); + gen6_reset_pm_iir(dev_priv, dev_priv->pm_rps_events); dev_priv->rps.pm_iir = 0; spin_unlock_irq(&dev_priv->irq_lock); } @@ -357,8 +383,6 @@ void gen6_enable_rps_interrupts(struct drm_i915_private *dev_priv) WARN_ON_ONCE(dev_priv->rps.pm_iir); WARN_ON_ONCE(I915_READ(gen6_pm_iir(dev_priv)) & dev_priv->pm_rps_events); dev_priv->rps.interrupts_enabled = true; - I915_WRITE(gen6_pm_ier(dev_priv), I915_READ(gen6_pm_ier(dev_priv)) | - dev_priv->pm_rps_events); gen6_enable_pm_irq(dev_priv, dev_priv->pm_rps_events); spin_unlock_irq(&dev_priv->irq_lock); @@ -379,9 +403,7 @@ void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv) I915_WRITE(GEN6_PMINTRMSK, gen6_sanitize_rps_pm_mask(dev_priv, ~0u)); - __gen6_disable_pm_irq(dev_priv, dev_priv->pm_rps_events); - I915_WRITE(gen6_pm_ier(dev_priv), I915_READ(gen6_pm_ier(dev_priv)) & - ~dev_priv->pm_rps_events); + gen6_disable_pm_irq(dev_priv, dev_priv->pm_rps_events); spin_unlock_irq(&dev_priv->irq_lock); synchronize_irq(dev_priv->drm.irq); @@ -1085,7 +1107,7 @@ static void gen6_pm_rps_work(struct work_struct *work) pm_iir = dev_priv->rps.pm_iir; dev_priv->rps.pm_iir = 0; /* Make sure not to corrupt PMIMR state used by ringbuffer on GEN6 */ - gen6_enable_pm_irq(dev_priv, dev_priv->pm_rps_events); + gen6_unmask_pm_irq(dev_priv, dev_priv->pm_rps_events); client_boost = dev_priv->rps.client_boost; dev_priv->rps.client_boost = false; spin_unlock_irq(&dev_priv->irq_lock); @@ -1586,7 +1608,7 @@ static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir) { if (pm_iir & dev_priv->pm_rps_events) { spin_lock(&dev_priv->irq_lock); - gen6_disable_pm_irq(dev_priv, pm_iir & dev_priv->pm_rps_events); + gen6_mask_pm_irq(dev_priv, pm_iir & dev_priv->pm_rps_events); if (dev_priv->rps.interrupts_enabled) { dev_priv->rps.pm_iir |= pm_iir & dev_priv->pm_rps_events; schedule_work(&dev_priv->rps.work); @@ -3545,11 +3567,13 @@ static void gen5_gt_irq_postinstall(struct drm_device *dev) * RPS interrupts will get enabled/disabled on demand when RPS * itself is enabled/disabled. */ - if (HAS_VEBOX(dev)) + if (HAS_VEBOX(dev_priv)) { pm_irqs |= PM_VEBOX_USER_INTERRUPT; + dev_priv->pm_ier |= PM_VEBOX_USER_INTERRUPT; + } - dev_priv->pm_irq_mask = 0xffffffff; - GEN5_IRQ_INIT(GEN6_PM, dev_priv->pm_irq_mask, pm_irqs); + dev_priv->pm_imr = 0xffffffff; + GEN5_IRQ_INIT(GEN6_PM, dev_priv->pm_imr, pm_irqs); } } @@ -3669,14 +3693,15 @@ static void gen8_gt_irq_postinstall(struct drm_i915_private *dev_priv) if (HAS_L3_DPF(dev_priv)) gt_interrupts[0] |= GT_RENDER_L3_PARITY_ERROR_INTERRUPT; - dev_priv->pm_irq_mask = 0xffffffff; + dev_priv->pm_ier = 0x0; + dev_priv->pm_imr = ~dev_priv->pm_ier; GEN8_IRQ_INIT_NDX(GT, 0, ~gt_interrupts[0], gt_interrupts[0]); GEN8_IRQ_INIT_NDX(GT, 1, ~gt_interrupts[1], gt_interrupts[1]); /* * RPS interrupts will get enabled/disabled on demand when RPS itself * is enabled/disabled. */ - GEN8_IRQ_INIT_NDX(GT, 2, dev_priv->pm_irq_mask, 0); + GEN8_IRQ_INIT_NDX(GT, 2, dev_priv->pm_imr, dev_priv->pm_ier); GEN8_IRQ_INIT_NDX(GT, 3, ~gt_interrupts[3], gt_interrupts[3]); } diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 16b33f59dd6f..07308eb2e240 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -1123,6 +1123,9 @@ void intel_check_pch_fifo_underruns(struct drm_i915_private *dev_priv); /* i915_irq.c */ void gen5_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask); void gen5_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask); +void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32 mask); +void gen6_mask_pm_irq(struct drm_i915_private *dev_priv, u32 mask); +void gen6_unmask_pm_irq(struct drm_i915_private *dev_priv, u32 mask); void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask); void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask); void gen6_reset_rps_interrupts(struct drm_i915_private *dev_priv); diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 32786ba199b9..67a70c5e6453 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1608,7 +1608,7 @@ hsw_vebox_irq_enable(struct intel_engine_cs *engine) struct drm_i915_private *dev_priv = engine->i915; I915_WRITE_IMR(engine, ~engine->irq_enable_mask); - gen6_enable_pm_irq(dev_priv, engine->irq_enable_mask); + gen6_unmask_pm_irq(dev_priv, engine->irq_enable_mask); } static void @@ -1617,7 +1617,7 @@ hsw_vebox_irq_disable(struct intel_engine_cs *engine) struct drm_i915_private *dev_priv = engine->i915; I915_WRITE_IMR(engine, ~0); - gen6_disable_pm_irq(dev_priv, engine->irq_enable_mask); + gen6_mask_pm_irq(dev_priv, engine->irq_enable_mask); } static void