From: Chris Wilson Date: Fri, 16 Jan 2015 09:34:36 +0000 (+0200) Subject: drm/i915: Skip uncore lock on earlier gens X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=51f67885842e36e0d0c853795cd02b129e19a20b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git drm/i915: Skip uncore lock on earlier gens With gen < 6 we don't need to take uncore lock as we don't have anything to protect from concurrent access. v2: rebase and account for gen9 changes Signed-off-by: Chris Wilson (v1) Signed-off-by: Mika Kuoppala Reviewed-by: Deepak S Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index 974881e23ffa..3d1ffacb7612 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -702,38 +702,61 @@ hsw_unclaimed_reg_detect(struct drm_i915_private *dev_priv) } } -#define REG_READ_HEADER(x) \ - unsigned long irqflags; \ +#define GEN2_READ_HEADER(x) \ u##x val = 0; \ - assert_device_not_suspended(dev_priv); \ - spin_lock_irqsave(&dev_priv->uncore.lock, irqflags) + assert_device_not_suspended(dev_priv); -#define REG_READ_FOOTER \ - spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); \ +#define GEN2_READ_FOOTER \ trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \ return val -#define __gen4_read(x) \ +#define __gen2_read(x) \ static u##x \ -gen4_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ - REG_READ_HEADER(x); \ +gen2_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ + GEN2_READ_HEADER(x); \ val = __raw_i915_read##x(dev_priv, reg); \ - REG_READ_FOOTER; \ + GEN2_READ_FOOTER; \ } #define __gen5_read(x) \ static u##x \ gen5_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ - REG_READ_HEADER(x); \ + GEN2_READ_HEADER(x); \ ilk_dummy_write(dev_priv); \ val = __raw_i915_read##x(dev_priv, reg); \ - REG_READ_FOOTER; \ + GEN2_READ_FOOTER; \ } +__gen5_read(8) +__gen5_read(16) +__gen5_read(32) +__gen5_read(64) +__gen2_read(8) +__gen2_read(16) +__gen2_read(32) +__gen2_read(64) + +#undef __gen5_read +#undef __gen2_read + +#undef GEN2_READ_FOOTER +#undef GEN2_READ_HEADER + +#define GEN6_READ_HEADER(x) \ + unsigned long irqflags; \ + u##x val = 0; \ + assert_device_not_suspended(dev_priv); \ + spin_lock_irqsave(&dev_priv->uncore.lock, irqflags) + +#define GEN6_READ_FOOTER \ + spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); \ + trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \ + return val + #define __gen6_read(x) \ static u##x \ gen6_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ - REG_READ_HEADER(x); \ + GEN6_READ_HEADER(x); \ hsw_unclaimed_reg_debug(dev_priv, reg, true, true); \ if (dev_priv->uncore.forcewake_count == 0 && \ NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ @@ -745,14 +768,14 @@ gen6_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ } \ val = __raw_i915_read##x(dev_priv, reg); \ hsw_unclaimed_reg_debug(dev_priv, reg, true, false); \ - REG_READ_FOOTER; \ + GEN6_READ_FOOTER; \ } #define __vlv_read(x) \ static u##x \ vlv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ unsigned fwengine = 0; \ - REG_READ_HEADER(x); \ + GEN6_READ_HEADER(x); \ if (FORCEWAKE_VLV_RENDER_RANGE_OFFSET(reg)) { \ if (dev_priv->uncore.fw_rendercount == 0) \ fwengine = FORCEWAKE_RENDER; \ @@ -765,14 +788,14 @@ vlv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ val = __raw_i915_read##x(dev_priv, reg); \ if (fwengine) \ dev_priv->uncore.funcs.force_wake_put(dev_priv, fwengine); \ - REG_READ_FOOTER; \ + GEN6_READ_FOOTER; \ } #define __chv_read(x) \ static u##x \ chv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ unsigned fwengine = 0; \ - REG_READ_HEADER(x); \ + GEN6_READ_HEADER(x); \ if (FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg)) { \ if (dev_priv->uncore.fw_rendercount == 0) \ fwengine = FORCEWAKE_RENDER; \ @@ -790,7 +813,7 @@ chv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ val = __raw_i915_read##x(dev_priv, reg); \ if (fwengine) \ dev_priv->uncore.funcs.force_wake_put(dev_priv, fwengine); \ - REG_READ_FOOTER; \ + GEN6_READ_FOOTER; \ } #define SKL_NEEDS_FORCE_WAKE(dev_priv, reg) \ @@ -799,7 +822,7 @@ chv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ #define __gen9_read(x) \ static u##x \ gen9_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ - REG_READ_HEADER(x); \ + GEN6_READ_HEADER(x); \ if (!SKL_NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ val = __raw_i915_read##x(dev_priv, reg); \ } else { \ @@ -825,7 +848,7 @@ gen9_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ if (fwengine) \ dev_priv->uncore.funcs.force_wake_put(dev_priv, fwengine); \ } \ - REG_READ_FOOTER; \ + GEN6_READ_FOOTER; \ } __gen9_read(8) @@ -844,55 +867,66 @@ __gen6_read(8) __gen6_read(16) __gen6_read(32) __gen6_read(64) -__gen5_read(8) -__gen5_read(16) -__gen5_read(32) -__gen5_read(64) -__gen4_read(8) -__gen4_read(16) -__gen4_read(32) -__gen4_read(64) #undef __gen9_read #undef __chv_read #undef __vlv_read #undef __gen6_read -#undef __gen5_read -#undef __gen4_read -#undef REG_READ_FOOTER -#undef REG_READ_HEADER +#undef GEN6_READ_FOOTER +#undef GEN6_READ_HEADER -#define REG_WRITE_HEADER \ - unsigned long irqflags; \ +#define GEN2_WRITE_HEADER \ trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \ assert_device_not_suspended(dev_priv); \ - spin_lock_irqsave(&dev_priv->uncore.lock, irqflags) -#define REG_WRITE_FOOTER \ - spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags) +#define GEN2_WRITE_FOOTER -#define __gen4_write(x) \ +#define __gen2_write(x) \ static void \ -gen4_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ - REG_WRITE_HEADER; \ +gen2_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ + GEN2_WRITE_HEADER; \ __raw_i915_write##x(dev_priv, reg, val); \ - REG_WRITE_FOOTER; \ + GEN2_WRITE_FOOTER; \ } #define __gen5_write(x) \ static void \ gen5_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ - REG_WRITE_HEADER; \ + GEN2_WRITE_HEADER; \ ilk_dummy_write(dev_priv); \ __raw_i915_write##x(dev_priv, reg, val); \ - REG_WRITE_FOOTER; \ + GEN2_WRITE_FOOTER; \ } +__gen5_write(8) +__gen5_write(16) +__gen5_write(32) +__gen5_write(64) +__gen2_write(8) +__gen2_write(16) +__gen2_write(32) +__gen2_write(64) + +#undef __gen5_write +#undef __gen2_write + +#undef GEN2_WRITE_FOOTER +#undef GEN2_WRITE_HEADER + +#define GEN6_WRITE_HEADER \ + unsigned long irqflags; \ + trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \ + assert_device_not_suspended(dev_priv); \ + spin_lock_irqsave(&dev_priv->uncore.lock, irqflags) + +#define GEN6_WRITE_FOOTER \ + spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags) + #define __gen6_write(x) \ static void \ gen6_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ u32 __fifo_ret = 0; \ - REG_WRITE_HEADER; \ + GEN6_WRITE_HEADER; \ if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \ } \ @@ -900,14 +934,14 @@ gen6_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace if (unlikely(__fifo_ret)) { \ gen6_gt_check_fifodbg(dev_priv); \ } \ - REG_WRITE_FOOTER; \ + GEN6_WRITE_FOOTER; \ } #define __hsw_write(x) \ static void \ hsw_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ u32 __fifo_ret = 0; \ - REG_WRITE_HEADER; \ + GEN6_WRITE_HEADER; \ if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \ } \ @@ -918,7 +952,7 @@ hsw_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) } \ hsw_unclaimed_reg_debug(dev_priv, reg, false, false); \ hsw_unclaimed_reg_detect(dev_priv); \ - REG_WRITE_FOOTER; \ + GEN6_WRITE_FOOTER; \ } static const u32 gen8_shadowed_regs[] = { @@ -945,7 +979,7 @@ static bool is_gen8_shadowed(struct drm_i915_private *dev_priv, u32 reg) #define __gen8_write(x) \ static void \ gen8_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ - REG_WRITE_HEADER; \ + GEN6_WRITE_HEADER; \ hsw_unclaimed_reg_debug(dev_priv, reg, false, true); \ if (reg < 0x40000 && !is_gen8_shadowed(dev_priv, reg)) { \ if (dev_priv->uncore.forcewake_count == 0) \ @@ -960,7 +994,7 @@ gen8_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace } \ hsw_unclaimed_reg_debug(dev_priv, reg, false, false); \ hsw_unclaimed_reg_detect(dev_priv); \ - REG_WRITE_FOOTER; \ + GEN6_WRITE_FOOTER; \ } #define __chv_write(x) \ @@ -968,7 +1002,7 @@ static void \ chv_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ unsigned fwengine = 0; \ bool shadowed = is_gen8_shadowed(dev_priv, reg); \ - REG_WRITE_HEADER; \ + GEN6_WRITE_HEADER; \ if (!shadowed) { \ if (FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg)) { \ if (dev_priv->uncore.fw_rendercount == 0) \ @@ -988,7 +1022,7 @@ chv_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) __raw_i915_write##x(dev_priv, reg, val); \ if (fwengine) \ dev_priv->uncore.funcs.force_wake_put(dev_priv, fwengine); \ - REG_WRITE_FOOTER; \ + GEN6_WRITE_FOOTER; \ } static const u32 gen9_shadowed_regs[] = { @@ -1018,7 +1052,7 @@ static bool is_gen9_shadowed(struct drm_i915_private *dev_priv, u32 reg) static void \ gen9_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, \ bool trace) { \ - REG_WRITE_HEADER; \ + GEN6_WRITE_HEADER; \ if (!SKL_NEEDS_FORCE_WAKE((dev_priv), (reg)) || \ is_gen9_shadowed(dev_priv, reg)) { \ __raw_i915_write##x(dev_priv, reg, val); \ @@ -1047,7 +1081,7 @@ gen9_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, \ dev_priv->uncore.funcs.force_wake_put(dev_priv, \ fwengine); \ } \ - REG_WRITE_FOOTER; \ + GEN6_WRITE_FOOTER; \ } __gen9_write(8) @@ -1070,24 +1104,14 @@ __gen6_write(8) __gen6_write(16) __gen6_write(32) __gen6_write(64) -__gen5_write(8) -__gen5_write(16) -__gen5_write(32) -__gen5_write(64) -__gen4_write(8) -__gen4_write(16) -__gen4_write(32) -__gen4_write(64) #undef __gen9_write #undef __chv_write #undef __gen8_write #undef __hsw_write #undef __gen6_write -#undef __gen5_write -#undef __gen4_write -#undef REG_WRITE_FOOTER -#undef REG_WRITE_HEADER +#undef GEN6_WRITE_FOOTER +#undef GEN6_WRITE_HEADER #define ASSIGN_WRITE_MMIO_VFUNCS(x) \ do { \ @@ -1200,8 +1224,8 @@ void intel_uncore_init(struct drm_device *dev) case 4: case 3: case 2: - ASSIGN_WRITE_MMIO_VFUNCS(gen4); - ASSIGN_READ_MMIO_VFUNCS(gen4); + ASSIGN_WRITE_MMIO_VFUNCS(gen2); + ASSIGN_READ_MMIO_VFUNCS(gen2); break; }