From 38cff0b15756dae3c7452618e6673f77d87e7220 Mon Sep 17 00:00:00 2001 From: Zhe Wang Date: Tue, 4 Nov 2014 17:07:04 +0000 Subject: [PATCH] drm/i915/skl: Gen9 Forcewake Implement common forcewake functions shared by Gen9 features. v2: Make the focewake_{get,put} functions static (Mika) Small coding style fix in the function definition (Damien) Reviewed-by: Mika Kuoppala Signed-off-by: Zhe Wang (v1) Signed-off-by: Damien Lespiau (v2) Signed-off-by: Damien Lespiau Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.h | 5 +- drivers/gpu/drm/i915/i915_reg.h | 6 + drivers/gpu/drm/i915/intel_uncore.c | 175 +++++++++++++++++++++++++++- 3 files changed, 184 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 01d741d37a85..0f00e5830625 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -549,6 +549,7 @@ struct intel_uncore { unsigned fw_rendercount; unsigned fw_mediacount; + unsigned fw_blittercount; struct timer_list force_wake_timer; }; @@ -2979,7 +2980,9 @@ int vlv_freq_opcode(struct drm_i915_private *dev_priv, int val); #define FORCEWAKE_RENDER (1 << 0) #define FORCEWAKE_MEDIA (1 << 1) -#define FORCEWAKE_ALL (FORCEWAKE_RENDER | FORCEWAKE_MEDIA) +#define FORCEWAKE_BLITTER (1 << 2) +#define FORCEWAKE_ALL (FORCEWAKE_RENDER | FORCEWAKE_MEDIA | \ + FORCEWAKE_BLITTER) #define I915_READ8(reg) dev_priv->uncore.funcs.mmio_readb(dev_priv, (reg), true) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index ea22e09bd4c5..77461cec70fa 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -5833,6 +5833,12 @@ enum punit_power_well { #define VLV_GTLC_PW_MEDIA_STATUS_MASK (1 << 5) #define VLV_GTLC_PW_RENDER_STATUS_MASK (1 << 7) #define FORCEWAKE_MT 0xa188 /* multi-threaded */ +#define FORCEWAKE_MEDIA_GEN9 0xa270 +#define FORCEWAKE_RENDER_GEN9 0xa278 +#define FORCEWAKE_BLITTER_GEN9 0xa188 +#define FORCEWAKE_ACK_MEDIA_GEN9 0x0D88 +#define FORCEWAKE_ACK_RENDER_GEN9 0x0D84 +#define FORCEWAKE_ACK_BLITTER_GEN9 0x130044 #define FORCEWAKE_KERNEL 0x1 #define FORCEWAKE_USER 0x2 #define FORCEWAKE_MT_ACK 0x130040 diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index 94276419c13f..68e722b780a1 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -296,6 +296,154 @@ static void vlv_force_wake_put(struct drm_i915_private *dev_priv, int fw_engine) spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); } +static void __gen9_gt_force_wake_mt_reset(struct drm_i915_private *dev_priv) +{ + __raw_i915_write32(dev_priv, FORCEWAKE_RENDER_GEN9, + _MASKED_BIT_DISABLE(0xffff)); + + __raw_i915_write32(dev_priv, FORCEWAKE_MEDIA_GEN9, + _MASKED_BIT_DISABLE(0xffff)); + + __raw_i915_write32(dev_priv, FORCEWAKE_BLITTER_GEN9, + _MASKED_BIT_DISABLE(0xffff)); +} + +static void +__gen9_force_wake_get(struct drm_i915_private *dev_priv, int fw_engine) +{ + /* Check for Render Engine */ + if (FORCEWAKE_RENDER & fw_engine) { + if (wait_for_atomic((__raw_i915_read32(dev_priv, + FORCEWAKE_ACK_RENDER_GEN9) & + FORCEWAKE_KERNEL) == 0, + FORCEWAKE_ACK_TIMEOUT_MS)) + DRM_ERROR("Timed out: Render forcewake old ack to clear.\n"); + + __raw_i915_write32(dev_priv, FORCEWAKE_RENDER_GEN9, + _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL)); + + if (wait_for_atomic((__raw_i915_read32(dev_priv, + FORCEWAKE_ACK_RENDER_GEN9) & + FORCEWAKE_KERNEL), + FORCEWAKE_ACK_TIMEOUT_MS)) + DRM_ERROR("Timed out: waiting for Render to ack.\n"); + } + + /* Check for Media Engine */ + if (FORCEWAKE_MEDIA & fw_engine) { + if (wait_for_atomic((__raw_i915_read32(dev_priv, + FORCEWAKE_ACK_MEDIA_GEN9) & + FORCEWAKE_KERNEL) == 0, + FORCEWAKE_ACK_TIMEOUT_MS)) + DRM_ERROR("Timed out: Media forcewake old ack to clear.\n"); + + __raw_i915_write32(dev_priv, FORCEWAKE_MEDIA_GEN9, + _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL)); + + if (wait_for_atomic((__raw_i915_read32(dev_priv, + FORCEWAKE_ACK_MEDIA_GEN9) & + FORCEWAKE_KERNEL), + FORCEWAKE_ACK_TIMEOUT_MS)) + DRM_ERROR("Timed out: waiting for Media to ack.\n"); + } + + /* Check for Blitter Engine */ + if (FORCEWAKE_BLITTER & fw_engine) { + if (wait_for_atomic((__raw_i915_read32(dev_priv, + FORCEWAKE_ACK_BLITTER_GEN9) & + FORCEWAKE_KERNEL) == 0, + FORCEWAKE_ACK_TIMEOUT_MS)) + DRM_ERROR("Timed out: Blitter forcewake old ack to clear.\n"); + + __raw_i915_write32(dev_priv, FORCEWAKE_BLITTER_GEN9, + _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL)); + + if (wait_for_atomic((__raw_i915_read32(dev_priv, + FORCEWAKE_ACK_BLITTER_GEN9) & + FORCEWAKE_KERNEL), + FORCEWAKE_ACK_TIMEOUT_MS)) + DRM_ERROR("Timed out: waiting for Blitter to ack.\n"); + } +} + +static void +__gen9_force_wake_put(struct drm_i915_private *dev_priv, int fw_engine) +{ + /* Check for Render Engine */ + if (FORCEWAKE_RENDER & fw_engine) + __raw_i915_write32(dev_priv, FORCEWAKE_RENDER_GEN9, + _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL)); + + /* Check for Media Engine */ + if (FORCEWAKE_MEDIA & fw_engine) + __raw_i915_write32(dev_priv, FORCEWAKE_MEDIA_GEN9, + _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL)); + + /* Check for Blitter Engine */ + if (FORCEWAKE_BLITTER & fw_engine) + __raw_i915_write32(dev_priv, FORCEWAKE_BLITTER_GEN9, + _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL)); +} + +static void +gen9_force_wake_get(struct drm_i915_private *dev_priv, int fw_engine) +{ + unsigned long irqflags; + + spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); + + if (FORCEWAKE_RENDER & fw_engine) { + if (dev_priv->uncore.fw_rendercount++ == 0) + dev_priv->uncore.funcs.force_wake_get(dev_priv, + FORCEWAKE_RENDER); + } + + if (FORCEWAKE_MEDIA & fw_engine) { + if (dev_priv->uncore.fw_mediacount++ == 0) + dev_priv->uncore.funcs.force_wake_get(dev_priv, + FORCEWAKE_MEDIA); + } + + if (FORCEWAKE_BLITTER & fw_engine) { + if (dev_priv->uncore.fw_blittercount++ == 0) + dev_priv->uncore.funcs.force_wake_get(dev_priv, + FORCEWAKE_BLITTER); + } + + spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); +} + +static void +gen9_force_wake_put(struct drm_i915_private *dev_priv, int fw_engine) +{ + unsigned long irqflags; + + spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); + + if (FORCEWAKE_RENDER & fw_engine) { + WARN_ON(dev_priv->uncore.fw_rendercount == 0); + if (--dev_priv->uncore.fw_rendercount == 0) + dev_priv->uncore.funcs.force_wake_put(dev_priv, + FORCEWAKE_RENDER); + } + + if (FORCEWAKE_MEDIA & fw_engine) { + WARN_ON(dev_priv->uncore.fw_mediacount == 0); + if (--dev_priv->uncore.fw_mediacount == 0) + dev_priv->uncore.funcs.force_wake_put(dev_priv, + FORCEWAKE_MEDIA); + } + + if (FORCEWAKE_BLITTER & fw_engine) { + WARN_ON(dev_priv->uncore.fw_blittercount == 0); + if (--dev_priv->uncore.fw_blittercount == 0) + dev_priv->uncore.funcs.force_wake_put(dev_priv, + FORCEWAKE_BLITTER); + } + + spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); +} + static void gen6_force_wake_timer(unsigned long arg) { struct drm_i915_private *dev_priv = (void *)arg; @@ -334,6 +482,9 @@ void intel_uncore_forcewake_reset(struct drm_device *dev, bool restore) if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev) || IS_BROADWELL(dev)) __gen7_gt_force_wake_mt_reset(dev_priv); + if (IS_GEN9(dev)) + __gen9_gt_force_wake_mt_reset(dev_priv); + if (restore) { /* If reset with a user forcewake, try to restore */ unsigned fw = 0; @@ -343,6 +494,15 @@ void intel_uncore_forcewake_reset(struct drm_device *dev, bool restore) if (dev_priv->uncore.fw_mediacount) fw |= FORCEWAKE_MEDIA; + } else if (IS_GEN9(dev)) { + if (dev_priv->uncore.fw_rendercount) + fw |= FORCEWAKE_RENDER; + + if (dev_priv->uncore.fw_mediacount) + fw |= FORCEWAKE_MEDIA; + + if (dev_priv->uncore.fw_blittercount) + fw |= FORCEWAKE_BLITTER; } else { if (dev_priv->uncore.forcewake_count) fw = FORCEWAKE_ALL; @@ -414,6 +574,10 @@ void gen6_gt_force_wake_get(struct drm_i915_private *dev_priv, int fw_engine) intel_runtime_pm_get(dev_priv); + /* Redirect to Gen9 specific routine */ + if (IS_GEN9(dev_priv->dev)) + return gen9_force_wake_get(dev_priv, fw_engine); + /* Redirect to VLV specific routine */ if (IS_VALLEYVIEW(dev_priv->dev)) return vlv_force_wake_get(dev_priv, fw_engine); @@ -435,6 +599,12 @@ void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv, int fw_engine) if (!dev_priv->uncore.funcs.force_wake_put) return; + /* Redirect to Gen9 specific routine */ + if (IS_GEN9(dev_priv->dev)) { + gen9_force_wake_put(dev_priv, fw_engine); + goto out; + } + /* Redirect to VLV specific routine */ if (IS_VALLEYVIEW(dev_priv->dev)) { vlv_force_wake_put(dev_priv, fw_engine); @@ -855,7 +1025,10 @@ void intel_uncore_init(struct drm_device *dev) __intel_uncore_early_sanitize(dev, false); - if (IS_VALLEYVIEW(dev)) { + if (IS_GEN9(dev)) { + dev_priv->uncore.funcs.force_wake_get = __gen9_force_wake_get; + dev_priv->uncore.funcs.force_wake_put = __gen9_force_wake_put; + } else if (IS_VALLEYVIEW(dev)) { dev_priv->uncore.funcs.force_wake_get = __vlv_force_wake_get; dev_priv->uncore.funcs.force_wake_put = __vlv_force_wake_put; } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { -- 2.30.2