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7d423af9bf
The current "disable C3+" workaround for the delayed vblank irqs on i945gm no longer works. I'm not sure what changed, but now I need to also disable C2. I also got my hands on a i915gm machine that suffers from the same issue. After some furious poking of registers I managed to find a better workaround: The "Do not Turn off Core Render Clock in C states" bit. With that I no longer have to disable any C-states, and as a nice bonus the power cost is only ~1/4 of the "disable C3+" method (which mind you doesn't even work anymore, and so would have an even higher power cost if we made it work by also disabling C2). So let's throw out all the cpuidle/qos crap and just toggle the magic bit as needed. And we extend the workaround to cover i915gm as well. Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191003140231.24408-1-ville.syrjala@linux.intel.com Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
177 lines
6 KiB
C
177 lines
6 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#ifndef __I915_IRQ_H__
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#define __I915_IRQ_H__
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#include <linux/ktime.h>
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#include <linux/types.h>
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#include "display/intel_display.h"
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#include "i915_reg.h"
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struct drm_crtc;
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struct drm_device;
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struct drm_display_mode;
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struct drm_i915_private;
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struct intel_crtc;
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struct intel_crtc;
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struct intel_gt;
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struct intel_guc;
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struct intel_uncore;
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void gen11_rps_irq_handler(struct intel_gt *gt, u32 pm_iir);
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void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir);
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void intel_irq_init(struct drm_i915_private *dev_priv);
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void intel_irq_fini(struct drm_i915_private *dev_priv);
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int intel_irq_install(struct drm_i915_private *dev_priv);
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void intel_irq_uninstall(struct drm_i915_private *dev_priv);
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u32 i915_pipestat_enable_mask(struct drm_i915_private *dev_priv,
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enum pipe pipe);
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void
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i915_enable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
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u32 status_mask);
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void
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i915_disable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe,
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u32 status_mask);
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void valleyview_enable_display_irqs(struct drm_i915_private *dev_priv);
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void valleyview_disable_display_irqs(struct drm_i915_private *dev_priv);
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void i915_hotplug_interrupt_update(struct drm_i915_private *dev_priv,
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u32 mask,
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u32 bits);
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void ilk_update_display_irq(struct drm_i915_private *dev_priv,
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u32 interrupt_mask,
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u32 enabled_irq_mask);
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static inline void
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ilk_enable_display_irq(struct drm_i915_private *dev_priv, u32 bits)
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{
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ilk_update_display_irq(dev_priv, bits, bits);
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}
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static inline void
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ilk_disable_display_irq(struct drm_i915_private *dev_priv, u32 bits)
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{
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ilk_update_display_irq(dev_priv, bits, 0);
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}
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void bdw_update_pipe_irq(struct drm_i915_private *dev_priv,
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enum pipe pipe,
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u32 interrupt_mask,
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u32 enabled_irq_mask);
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static inline void bdw_enable_pipe_irq(struct drm_i915_private *dev_priv,
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enum pipe pipe, u32 bits)
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{
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bdw_update_pipe_irq(dev_priv, pipe, bits, bits);
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}
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static inline void bdw_disable_pipe_irq(struct drm_i915_private *dev_priv,
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enum pipe pipe, u32 bits)
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{
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bdw_update_pipe_irq(dev_priv, pipe, bits, 0);
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}
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void ibx_display_interrupt_update(struct drm_i915_private *dev_priv,
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u32 interrupt_mask,
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u32 enabled_irq_mask);
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static inline void
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ibx_enable_display_interrupt(struct drm_i915_private *dev_priv, u32 bits)
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{
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ibx_display_interrupt_update(dev_priv, bits, bits);
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}
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static inline void
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ibx_disable_display_interrupt(struct drm_i915_private *dev_priv, u32 bits)
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{
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ibx_display_interrupt_update(dev_priv, bits, 0);
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}
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void gen5_enable_gt_irq(struct drm_i915_private *dev_priv, u32 mask);
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void gen5_disable_gt_irq(struct drm_i915_private *dev_priv, u32 mask);
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void gen11_reset_rps_interrupts(struct drm_i915_private *dev_priv);
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void gen6_reset_rps_interrupts(struct drm_i915_private *dev_priv);
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void gen6_enable_rps_interrupts(struct drm_i915_private *dev_priv);
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void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv);
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void gen6_rps_reset_ei(struct drm_i915_private *dev_priv);
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u32 gen6_sanitize_rps_pm_mask(const struct drm_i915_private *i915, u32 mask);
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void intel_runtime_pm_disable_interrupts(struct drm_i915_private *dev_priv);
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void intel_runtime_pm_enable_interrupts(struct drm_i915_private *dev_priv);
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bool intel_irqs_enabled(struct drm_i915_private *dev_priv);
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void intel_synchronize_irq(struct drm_i915_private *i915);
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int intel_get_crtc_scanline(struct intel_crtc *crtc);
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void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv,
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u8 pipe_mask);
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void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
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u8 pipe_mask);
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void gen9_reset_guc_interrupts(struct intel_guc *guc);
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void gen9_enable_guc_interrupts(struct intel_guc *guc);
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void gen9_disable_guc_interrupts(struct intel_guc *guc);
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void gen11_reset_guc_interrupts(struct intel_guc *guc);
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void gen11_enable_guc_interrupts(struct intel_guc *guc);
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void gen11_disable_guc_interrupts(struct intel_guc *guc);
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bool i915_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
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bool in_vblank_irq, int *vpos, int *hpos,
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ktime_t *stime, ktime_t *etime,
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const struct drm_display_mode *mode);
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u32 i915_get_vblank_counter(struct drm_crtc *crtc);
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u32 g4x_get_vblank_counter(struct drm_crtc *crtc);
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int i8xx_enable_vblank(struct drm_crtc *crtc);
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int i915gm_enable_vblank(struct drm_crtc *crtc);
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int i965_enable_vblank(struct drm_crtc *crtc);
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int ilk_enable_vblank(struct drm_crtc *crtc);
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int bdw_enable_vblank(struct drm_crtc *crtc);
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void i8xx_disable_vblank(struct drm_crtc *crtc);
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void i915gm_disable_vblank(struct drm_crtc *crtc);
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void i965_disable_vblank(struct drm_crtc *crtc);
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void ilk_disable_vblank(struct drm_crtc *crtc);
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void bdw_disable_vblank(struct drm_crtc *crtc);
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void gen2_irq_reset(struct intel_uncore *uncore);
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void gen3_irq_reset(struct intel_uncore *uncore, i915_reg_t imr,
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i915_reg_t iir, i915_reg_t ier);
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void gen2_irq_init(struct intel_uncore *uncore,
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u32 imr_val, u32 ier_val);
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void gen3_irq_init(struct intel_uncore *uncore,
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i915_reg_t imr, u32 imr_val,
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i915_reg_t ier, u32 ier_val,
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i915_reg_t iir);
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#define GEN8_IRQ_RESET_NDX(uncore, type, which) \
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({ \
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unsigned int which_ = which; \
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gen3_irq_reset((uncore), GEN8_##type##_IMR(which_), \
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GEN8_##type##_IIR(which_), GEN8_##type##_IER(which_)); \
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})
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#define GEN3_IRQ_RESET(uncore, type) \
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gen3_irq_reset((uncore), type##IMR, type##IIR, type##IER)
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#define GEN2_IRQ_RESET(uncore) \
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gen2_irq_reset(uncore)
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#define GEN8_IRQ_INIT_NDX(uncore, type, which, imr_val, ier_val) \
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({ \
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unsigned int which_ = which; \
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gen3_irq_init((uncore), \
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GEN8_##type##_IMR(which_), imr_val, \
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GEN8_##type##_IER(which_), ier_val, \
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GEN8_##type##_IIR(which_)); \
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})
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#define GEN3_IRQ_INIT(uncore, type, imr_val, ier_val) \
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gen3_irq_init((uncore), \
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type##IMR, imr_val, \
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type##IER, ier_val, \
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type##IIR)
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#define GEN2_IRQ_INIT(uncore, imr_val, ier_val) \
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gen2_irq_init((uncore), imr_val, ier_val)
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#endif /* __I915_IRQ_H__ */
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