forked from Minki/linux
ff047a87cf
Interrupt handling in Gen11 is quite different from previous platforms. v2: Rebased (Michel) v3: Rebased with wiggle v4: Rebased, remove TODO warning correctly (Daniele) v5: Rebased, made gen11_gtiir const while at it (Michel) v6: Rebased v7: Adapt to the style currently in upstream Suggested-by: Michel Thierry <michel.thierry@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Michel Thierry <michel.thierry@intel.com> Signed-off-by: Oscar Mateo <oscar.mateo@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Michel Thierry <michel.thierry@intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/1524605995-22324-1-git-send-email-oscar.mateo@intel.com
4602 lines
126 KiB
C
4602 lines
126 KiB
C
/* i915_irq.c -- IRQ support for the I915 -*- linux-c -*-
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*/
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/*
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* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/sysrq.h>
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#include <linux/slab.h>
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#include <linux/circ_buf.h>
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#include <drm/drmP.h>
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#include <drm/i915_drm.h>
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#include "i915_drv.h"
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#include "i915_trace.h"
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#include "intel_drv.h"
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/**
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* DOC: interrupt handling
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*
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* These functions provide the basic support for enabling and disabling the
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* interrupt handling support. There's a lot more functionality in i915_irq.c
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* and related files, but that will be described in separate chapters.
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*/
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static const u32 hpd_ilk[HPD_NUM_PINS] = {
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[HPD_PORT_A] = DE_DP_A_HOTPLUG,
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};
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static const u32 hpd_ivb[HPD_NUM_PINS] = {
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[HPD_PORT_A] = DE_DP_A_HOTPLUG_IVB,
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};
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static const u32 hpd_bdw[HPD_NUM_PINS] = {
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[HPD_PORT_A] = GEN8_PORT_DP_A_HOTPLUG,
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};
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static const u32 hpd_ibx[HPD_NUM_PINS] = {
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[HPD_CRT] = SDE_CRT_HOTPLUG,
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[HPD_SDVO_B] = SDE_SDVOB_HOTPLUG,
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[HPD_PORT_B] = SDE_PORTB_HOTPLUG,
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[HPD_PORT_C] = SDE_PORTC_HOTPLUG,
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[HPD_PORT_D] = SDE_PORTD_HOTPLUG
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};
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static const u32 hpd_cpt[HPD_NUM_PINS] = {
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[HPD_CRT] = SDE_CRT_HOTPLUG_CPT,
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[HPD_SDVO_B] = SDE_SDVOB_HOTPLUG_CPT,
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[HPD_PORT_B] = SDE_PORTB_HOTPLUG_CPT,
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[HPD_PORT_C] = SDE_PORTC_HOTPLUG_CPT,
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[HPD_PORT_D] = SDE_PORTD_HOTPLUG_CPT
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};
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static const u32 hpd_spt[HPD_NUM_PINS] = {
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[HPD_PORT_A] = SDE_PORTA_HOTPLUG_SPT,
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[HPD_PORT_B] = SDE_PORTB_HOTPLUG_CPT,
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[HPD_PORT_C] = SDE_PORTC_HOTPLUG_CPT,
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[HPD_PORT_D] = SDE_PORTD_HOTPLUG_CPT,
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[HPD_PORT_E] = SDE_PORTE_HOTPLUG_SPT
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};
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static const u32 hpd_mask_i915[HPD_NUM_PINS] = {
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[HPD_CRT] = CRT_HOTPLUG_INT_EN,
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[HPD_SDVO_B] = SDVOB_HOTPLUG_INT_EN,
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[HPD_SDVO_C] = SDVOC_HOTPLUG_INT_EN,
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[HPD_PORT_B] = PORTB_HOTPLUG_INT_EN,
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[HPD_PORT_C] = PORTC_HOTPLUG_INT_EN,
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[HPD_PORT_D] = PORTD_HOTPLUG_INT_EN
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};
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static const u32 hpd_status_g4x[HPD_NUM_PINS] = {
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[HPD_CRT] = CRT_HOTPLUG_INT_STATUS,
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[HPD_SDVO_B] = SDVOB_HOTPLUG_INT_STATUS_G4X,
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[HPD_SDVO_C] = SDVOC_HOTPLUG_INT_STATUS_G4X,
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[HPD_PORT_B] = PORTB_HOTPLUG_INT_STATUS,
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[HPD_PORT_C] = PORTC_HOTPLUG_INT_STATUS,
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[HPD_PORT_D] = PORTD_HOTPLUG_INT_STATUS
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};
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static const u32 hpd_status_i915[HPD_NUM_PINS] = {
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[HPD_CRT] = CRT_HOTPLUG_INT_STATUS,
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[HPD_SDVO_B] = SDVOB_HOTPLUG_INT_STATUS_I915,
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[HPD_SDVO_C] = SDVOC_HOTPLUG_INT_STATUS_I915,
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[HPD_PORT_B] = PORTB_HOTPLUG_INT_STATUS,
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[HPD_PORT_C] = PORTC_HOTPLUG_INT_STATUS,
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[HPD_PORT_D] = PORTD_HOTPLUG_INT_STATUS
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};
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/* BXT hpd list */
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static const u32 hpd_bxt[HPD_NUM_PINS] = {
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[HPD_PORT_A] = BXT_DE_PORT_HP_DDIA,
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[HPD_PORT_B] = BXT_DE_PORT_HP_DDIB,
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[HPD_PORT_C] = BXT_DE_PORT_HP_DDIC
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};
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/* IIR can theoretically queue up two events. Be paranoid. */
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#define GEN8_IRQ_RESET_NDX(type, which) do { \
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I915_WRITE(GEN8_##type##_IMR(which), 0xffffffff); \
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POSTING_READ(GEN8_##type##_IMR(which)); \
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I915_WRITE(GEN8_##type##_IER(which), 0); \
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I915_WRITE(GEN8_##type##_IIR(which), 0xffffffff); \
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POSTING_READ(GEN8_##type##_IIR(which)); \
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I915_WRITE(GEN8_##type##_IIR(which), 0xffffffff); \
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POSTING_READ(GEN8_##type##_IIR(which)); \
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} while (0)
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#define GEN3_IRQ_RESET(type) do { \
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I915_WRITE(type##IMR, 0xffffffff); \
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POSTING_READ(type##IMR); \
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I915_WRITE(type##IER, 0); \
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I915_WRITE(type##IIR, 0xffffffff); \
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POSTING_READ(type##IIR); \
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I915_WRITE(type##IIR, 0xffffffff); \
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POSTING_READ(type##IIR); \
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} while (0)
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#define GEN2_IRQ_RESET(type) do { \
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I915_WRITE16(type##IMR, 0xffff); \
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POSTING_READ16(type##IMR); \
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I915_WRITE16(type##IER, 0); \
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I915_WRITE16(type##IIR, 0xffff); \
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POSTING_READ16(type##IIR); \
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I915_WRITE16(type##IIR, 0xffff); \
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POSTING_READ16(type##IIR); \
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} while (0)
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/*
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* We should clear IMR at preinstall/uninstall, and just check at postinstall.
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*/
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static void gen3_assert_iir_is_zero(struct drm_i915_private *dev_priv,
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i915_reg_t reg)
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{
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u32 val = I915_READ(reg);
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if (val == 0)
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return;
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WARN(1, "Interrupt register 0x%x is not zero: 0x%08x\n",
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i915_mmio_reg_offset(reg), val);
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I915_WRITE(reg, 0xffffffff);
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POSTING_READ(reg);
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I915_WRITE(reg, 0xffffffff);
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POSTING_READ(reg);
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}
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static void gen2_assert_iir_is_zero(struct drm_i915_private *dev_priv,
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i915_reg_t reg)
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{
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u16 val = I915_READ16(reg);
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if (val == 0)
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return;
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WARN(1, "Interrupt register 0x%x is not zero: 0x%08x\n",
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i915_mmio_reg_offset(reg), val);
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I915_WRITE16(reg, 0xffff);
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POSTING_READ16(reg);
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I915_WRITE16(reg, 0xffff);
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POSTING_READ16(reg);
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}
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#define GEN8_IRQ_INIT_NDX(type, which, imr_val, ier_val) do { \
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gen3_assert_iir_is_zero(dev_priv, GEN8_##type##_IIR(which)); \
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I915_WRITE(GEN8_##type##_IER(which), (ier_val)); \
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I915_WRITE(GEN8_##type##_IMR(which), (imr_val)); \
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POSTING_READ(GEN8_##type##_IMR(which)); \
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} while (0)
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#define GEN3_IRQ_INIT(type, imr_val, ier_val) do { \
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gen3_assert_iir_is_zero(dev_priv, type##IIR); \
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I915_WRITE(type##IER, (ier_val)); \
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I915_WRITE(type##IMR, (imr_val)); \
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POSTING_READ(type##IMR); \
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} while (0)
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#define GEN2_IRQ_INIT(type, imr_val, ier_val) do { \
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gen2_assert_iir_is_zero(dev_priv, type##IIR); \
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I915_WRITE16(type##IER, (ier_val)); \
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I915_WRITE16(type##IMR, (imr_val)); \
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POSTING_READ16(type##IMR); \
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} while (0)
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static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir);
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static void gen9_guc_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir);
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/* For display hotplug interrupt */
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static inline void
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i915_hotplug_interrupt_update_locked(struct drm_i915_private *dev_priv,
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uint32_t mask,
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uint32_t bits)
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{
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uint32_t val;
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lockdep_assert_held(&dev_priv->irq_lock);
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WARN_ON(bits & ~mask);
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val = I915_READ(PORT_HOTPLUG_EN);
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val &= ~mask;
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val |= bits;
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I915_WRITE(PORT_HOTPLUG_EN, val);
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}
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/**
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* i915_hotplug_interrupt_update - update hotplug interrupt enable
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* @dev_priv: driver private
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* @mask: bits to update
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* @bits: bits to enable
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* NOTE: the HPD enable bits are modified both inside and outside
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* of an interrupt context. To avoid that read-modify-write cycles
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* interfer, these bits are protected by a spinlock. Since this
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* function is usually not called from a context where the lock is
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* held already, this function acquires the lock itself. A non-locking
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* version is also available.
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*/
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void i915_hotplug_interrupt_update(struct drm_i915_private *dev_priv,
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uint32_t mask,
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uint32_t bits)
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{
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spin_lock_irq(&dev_priv->irq_lock);
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i915_hotplug_interrupt_update_locked(dev_priv, mask, bits);
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spin_unlock_irq(&dev_priv->irq_lock);
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}
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static u32
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gen11_gt_engine_identity(struct drm_i915_private * const i915,
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const unsigned int bank, const unsigned int bit);
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bool gen11_reset_one_iir(struct drm_i915_private * const i915,
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const unsigned int bank,
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const unsigned int bit)
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{
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void __iomem * const regs = i915->regs;
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u32 dw;
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lockdep_assert_held(&i915->irq_lock);
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dw = raw_reg_read(regs, GEN11_GT_INTR_DW(bank));
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if (dw & BIT(bit)) {
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/*
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* According to the BSpec, DW_IIR bits cannot be cleared without
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* first servicing the Selector & Shared IIR registers.
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*/
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gen11_gt_engine_identity(i915, bank, bit);
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/*
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* We locked GT INT DW by reading it. If we want to (try
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* to) recover from this succesfully, we need to clear
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* our bit, otherwise we are locking the register for
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* everybody.
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*/
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raw_reg_write(regs, GEN11_GT_INTR_DW(bank), BIT(bit));
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return true;
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}
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return false;
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}
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/**
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* ilk_update_display_irq - update DEIMR
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* @dev_priv: driver private
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* @interrupt_mask: mask of interrupt bits to update
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* @enabled_irq_mask: mask of interrupt bits to enable
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*/
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void ilk_update_display_irq(struct drm_i915_private *dev_priv,
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uint32_t interrupt_mask,
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uint32_t enabled_irq_mask)
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{
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uint32_t new_val;
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lockdep_assert_held(&dev_priv->irq_lock);
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WARN_ON(enabled_irq_mask & ~interrupt_mask);
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if (WARN_ON(!intel_irqs_enabled(dev_priv)))
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return;
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new_val = dev_priv->irq_mask;
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new_val &= ~interrupt_mask;
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new_val |= (~enabled_irq_mask & interrupt_mask);
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if (new_val != dev_priv->irq_mask) {
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dev_priv->irq_mask = new_val;
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I915_WRITE(DEIMR, dev_priv->irq_mask);
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POSTING_READ(DEIMR);
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}
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}
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/**
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* ilk_update_gt_irq - update GTIMR
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* @dev_priv: driver private
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* @interrupt_mask: mask of interrupt bits to update
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* @enabled_irq_mask: mask of interrupt bits to enable
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*/
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static void ilk_update_gt_irq(struct drm_i915_private *dev_priv,
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uint32_t interrupt_mask,
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uint32_t enabled_irq_mask)
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{
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lockdep_assert_held(&dev_priv->irq_lock);
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WARN_ON(enabled_irq_mask & ~interrupt_mask);
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if (WARN_ON(!intel_irqs_enabled(dev_priv)))
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return;
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dev_priv->gt_irq_mask &= ~interrupt_mask;
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dev_priv->gt_irq_mask |= (~enabled_irq_mask & interrupt_mask);
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I915_WRITE(GTIMR, dev_priv->gt_irq_mask);
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}
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void gen5_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask)
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{
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ilk_update_gt_irq(dev_priv, mask, mask);
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POSTING_READ_FW(GTIMR);
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}
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void gen5_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask)
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{
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ilk_update_gt_irq(dev_priv, mask, 0);
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}
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static i915_reg_t gen6_pm_iir(struct drm_i915_private *dev_priv)
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{
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WARN_ON_ONCE(INTEL_GEN(dev_priv) >= 11);
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return INTEL_GEN(dev_priv) >= 8 ? GEN8_GT_IIR(2) : GEN6_PMIIR;
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}
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static i915_reg_t gen6_pm_imr(struct drm_i915_private *dev_priv)
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{
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if (INTEL_GEN(dev_priv) >= 11)
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return GEN11_GPM_WGBOXPERF_INTR_MASK;
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else if (INTEL_GEN(dev_priv) >= 8)
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return GEN8_GT_IMR(2);
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else
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return GEN6_PMIMR;
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}
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static i915_reg_t gen6_pm_ier(struct drm_i915_private *dev_priv)
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{
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if (INTEL_GEN(dev_priv) >= 11)
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return GEN11_GPM_WGBOXPERF_INTR_ENABLE;
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else if (INTEL_GEN(dev_priv) >= 8)
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return GEN8_GT_IER(2);
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else
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return GEN6_PMIER;
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}
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/**
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* snb_update_pm_irq - update GEN6_PMIMR
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* @dev_priv: driver private
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* @interrupt_mask: mask of interrupt bits to update
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* @enabled_irq_mask: mask of interrupt bits to enable
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*/
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static void snb_update_pm_irq(struct drm_i915_private *dev_priv,
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uint32_t interrupt_mask,
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uint32_t enabled_irq_mask)
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{
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uint32_t new_val;
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WARN_ON(enabled_irq_mask & ~interrupt_mask);
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lockdep_assert_held(&dev_priv->irq_lock);
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new_val = dev_priv->pm_imr;
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new_val &= ~interrupt_mask;
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new_val |= (~enabled_irq_mask & interrupt_mask);
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if (new_val != dev_priv->pm_imr) {
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dev_priv->pm_imr = new_val;
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I915_WRITE(gen6_pm_imr(dev_priv), dev_priv->pm_imr);
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POSTING_READ(gen6_pm_imr(dev_priv));
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}
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}
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void gen6_unmask_pm_irq(struct drm_i915_private *dev_priv, u32 mask)
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{
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if (WARN_ON(!intel_irqs_enabled(dev_priv)))
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return;
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snb_update_pm_irq(dev_priv, mask, mask);
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}
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static void __gen6_mask_pm_irq(struct drm_i915_private *dev_priv, u32 mask)
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{
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snb_update_pm_irq(dev_priv, mask, 0);
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}
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void gen6_mask_pm_irq(struct drm_i915_private *dev_priv, u32 mask)
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{
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if (WARN_ON(!intel_irqs_enabled(dev_priv)))
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return;
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__gen6_mask_pm_irq(dev_priv, mask);
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}
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static void gen6_reset_pm_iir(struct drm_i915_private *dev_priv, u32 reset_mask)
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{
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i915_reg_t reg = gen6_pm_iir(dev_priv);
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lockdep_assert_held(&dev_priv->irq_lock);
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I915_WRITE(reg, reset_mask);
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I915_WRITE(reg, reset_mask);
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POSTING_READ(reg);
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}
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static void gen6_enable_pm_irq(struct drm_i915_private *dev_priv, u32 enable_mask)
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{
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|
lockdep_assert_held(&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) */
|
|
}
|
|
|
|
static void gen6_disable_pm_irq(struct drm_i915_private *dev_priv, u32 disable_mask)
|
|
{
|
|
lockdep_assert_held(&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 gen11_reset_rps_interrupts(struct drm_i915_private *dev_priv)
|
|
{
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
|
|
while (gen11_reset_one_iir(dev_priv, 0, GEN11_GTPM))
|
|
;
|
|
|
|
dev_priv->gt_pm.rps.pm_iir = 0;
|
|
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
}
|
|
|
|
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->gt_pm.rps.pm_iir = 0;
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
}
|
|
|
|
void gen6_enable_rps_interrupts(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_rps *rps = &dev_priv->gt_pm.rps;
|
|
|
|
if (READ_ONCE(rps->interrupts_enabled))
|
|
return;
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
WARN_ON_ONCE(rps->pm_iir);
|
|
|
|
if (INTEL_GEN(dev_priv) >= 11)
|
|
WARN_ON_ONCE(gen11_reset_one_iir(dev_priv, 0, GEN11_GTPM));
|
|
else
|
|
WARN_ON_ONCE(I915_READ(gen6_pm_iir(dev_priv)) & dev_priv->pm_rps_events);
|
|
|
|
rps->interrupts_enabled = true;
|
|
gen6_enable_pm_irq(dev_priv, dev_priv->pm_rps_events);
|
|
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
}
|
|
|
|
void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct intel_rps *rps = &dev_priv->gt_pm.rps;
|
|
|
|
if (!READ_ONCE(rps->interrupts_enabled))
|
|
return;
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
rps->interrupts_enabled = false;
|
|
|
|
I915_WRITE(GEN6_PMINTRMSK, gen6_sanitize_rps_pm_mask(dev_priv, ~0u));
|
|
|
|
gen6_disable_pm_irq(dev_priv, dev_priv->pm_rps_events);
|
|
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
synchronize_irq(dev_priv->drm.irq);
|
|
|
|
/* Now that we will not be generating any more work, flush any
|
|
* outstanding tasks. As we are called on the RPS idle path,
|
|
* we will reset the GPU to minimum frequencies, so the current
|
|
* state of the worker can be discarded.
|
|
*/
|
|
cancel_work_sync(&rps->work);
|
|
if (INTEL_GEN(dev_priv) >= 11)
|
|
gen11_reset_rps_interrupts(dev_priv);
|
|
else
|
|
gen6_reset_rps_interrupts(dev_priv);
|
|
}
|
|
|
|
void gen9_reset_guc_interrupts(struct drm_i915_private *dev_priv)
|
|
{
|
|
assert_rpm_wakelock_held(dev_priv);
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
gen6_reset_pm_iir(dev_priv, dev_priv->pm_guc_events);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
}
|
|
|
|
void gen9_enable_guc_interrupts(struct drm_i915_private *dev_priv)
|
|
{
|
|
assert_rpm_wakelock_held(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)) &
|
|
dev_priv->pm_guc_events);
|
|
dev_priv->guc.interrupts_enabled = true;
|
|
gen6_enable_pm_irq(dev_priv, dev_priv->pm_guc_events);
|
|
}
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
}
|
|
|
|
void gen9_disable_guc_interrupts(struct drm_i915_private *dev_priv)
|
|
{
|
|
assert_rpm_wakelock_held(dev_priv);
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
dev_priv->guc.interrupts_enabled = false;
|
|
|
|
gen6_disable_pm_irq(dev_priv, dev_priv->pm_guc_events);
|
|
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
synchronize_irq(dev_priv->drm.irq);
|
|
|
|
gen9_reset_guc_interrupts(dev_priv);
|
|
}
|
|
|
|
/**
|
|
* bdw_update_port_irq - update DE port interrupt
|
|
* @dev_priv: driver private
|
|
* @interrupt_mask: mask of interrupt bits to update
|
|
* @enabled_irq_mask: mask of interrupt bits to enable
|
|
*/
|
|
static void bdw_update_port_irq(struct drm_i915_private *dev_priv,
|
|
uint32_t interrupt_mask,
|
|
uint32_t enabled_irq_mask)
|
|
{
|
|
uint32_t new_val;
|
|
uint32_t old_val;
|
|
|
|
lockdep_assert_held(&dev_priv->irq_lock);
|
|
|
|
WARN_ON(enabled_irq_mask & ~interrupt_mask);
|
|
|
|
if (WARN_ON(!intel_irqs_enabled(dev_priv)))
|
|
return;
|
|
|
|
old_val = I915_READ(GEN8_DE_PORT_IMR);
|
|
|
|
new_val = old_val;
|
|
new_val &= ~interrupt_mask;
|
|
new_val |= (~enabled_irq_mask & interrupt_mask);
|
|
|
|
if (new_val != old_val) {
|
|
I915_WRITE(GEN8_DE_PORT_IMR, new_val);
|
|
POSTING_READ(GEN8_DE_PORT_IMR);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* bdw_update_pipe_irq - update DE pipe interrupt
|
|
* @dev_priv: driver private
|
|
* @pipe: pipe whose interrupt to update
|
|
* @interrupt_mask: mask of interrupt bits to update
|
|
* @enabled_irq_mask: mask of interrupt bits to enable
|
|
*/
|
|
void bdw_update_pipe_irq(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe,
|
|
uint32_t interrupt_mask,
|
|
uint32_t enabled_irq_mask)
|
|
{
|
|
uint32_t new_val;
|
|
|
|
lockdep_assert_held(&dev_priv->irq_lock);
|
|
|
|
WARN_ON(enabled_irq_mask & ~interrupt_mask);
|
|
|
|
if (WARN_ON(!intel_irqs_enabled(dev_priv)))
|
|
return;
|
|
|
|
new_val = dev_priv->de_irq_mask[pipe];
|
|
new_val &= ~interrupt_mask;
|
|
new_val |= (~enabled_irq_mask & interrupt_mask);
|
|
|
|
if (new_val != dev_priv->de_irq_mask[pipe]) {
|
|
dev_priv->de_irq_mask[pipe] = new_val;
|
|
I915_WRITE(GEN8_DE_PIPE_IMR(pipe), dev_priv->de_irq_mask[pipe]);
|
|
POSTING_READ(GEN8_DE_PIPE_IMR(pipe));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ibx_display_interrupt_update - update SDEIMR
|
|
* @dev_priv: driver private
|
|
* @interrupt_mask: mask of interrupt bits to update
|
|
* @enabled_irq_mask: mask of interrupt bits to enable
|
|
*/
|
|
void ibx_display_interrupt_update(struct drm_i915_private *dev_priv,
|
|
uint32_t interrupt_mask,
|
|
uint32_t enabled_irq_mask)
|
|
{
|
|
uint32_t sdeimr = I915_READ(SDEIMR);
|
|
sdeimr &= ~interrupt_mask;
|
|
sdeimr |= (~enabled_irq_mask & interrupt_mask);
|
|
|
|
WARN_ON(enabled_irq_mask & ~interrupt_mask);
|
|
|
|
lockdep_assert_held(&dev_priv->irq_lock);
|
|
|
|
if (WARN_ON(!intel_irqs_enabled(dev_priv)))
|
|
return;
|
|
|
|
I915_WRITE(SDEIMR, sdeimr);
|
|
POSTING_READ(SDEIMR);
|
|
}
|
|
|
|
u32 i915_pipestat_enable_mask(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
u32 status_mask = dev_priv->pipestat_irq_mask[pipe];
|
|
u32 enable_mask = status_mask << 16;
|
|
|
|
lockdep_assert_held(&dev_priv->irq_lock);
|
|
|
|
if (INTEL_GEN(dev_priv) < 5)
|
|
goto out;
|
|
|
|
/*
|
|
* On pipe A we don't support the PSR interrupt yet,
|
|
* on pipe B and C the same bit MBZ.
|
|
*/
|
|
if (WARN_ON_ONCE(status_mask & PIPE_A_PSR_STATUS_VLV))
|
|
return 0;
|
|
/*
|
|
* On pipe B and C we don't support the PSR interrupt yet, on pipe
|
|
* A the same bit is for perf counters which we don't use either.
|
|
*/
|
|
if (WARN_ON_ONCE(status_mask & PIPE_B_PSR_STATUS_VLV))
|
|
return 0;
|
|
|
|
enable_mask &= ~(PIPE_FIFO_UNDERRUN_STATUS |
|
|
SPRITE0_FLIP_DONE_INT_EN_VLV |
|
|
SPRITE1_FLIP_DONE_INT_EN_VLV);
|
|
if (status_mask & SPRITE0_FLIP_DONE_INT_STATUS_VLV)
|
|
enable_mask |= SPRITE0_FLIP_DONE_INT_EN_VLV;
|
|
if (status_mask & SPRITE1_FLIP_DONE_INT_STATUS_VLV)
|
|
enable_mask |= SPRITE1_FLIP_DONE_INT_EN_VLV;
|
|
|
|
out:
|
|
WARN_ONCE(enable_mask & ~PIPESTAT_INT_ENABLE_MASK ||
|
|
status_mask & ~PIPESTAT_INT_STATUS_MASK,
|
|
"pipe %c: enable_mask=0x%x, status_mask=0x%x\n",
|
|
pipe_name(pipe), enable_mask, status_mask);
|
|
|
|
return enable_mask;
|
|
}
|
|
|
|
void i915_enable_pipestat(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe, u32 status_mask)
|
|
{
|
|
i915_reg_t reg = PIPESTAT(pipe);
|
|
u32 enable_mask;
|
|
|
|
WARN_ONCE(status_mask & ~PIPESTAT_INT_STATUS_MASK,
|
|
"pipe %c: status_mask=0x%x\n",
|
|
pipe_name(pipe), status_mask);
|
|
|
|
lockdep_assert_held(&dev_priv->irq_lock);
|
|
WARN_ON(!intel_irqs_enabled(dev_priv));
|
|
|
|
if ((dev_priv->pipestat_irq_mask[pipe] & status_mask) == status_mask)
|
|
return;
|
|
|
|
dev_priv->pipestat_irq_mask[pipe] |= status_mask;
|
|
enable_mask = i915_pipestat_enable_mask(dev_priv, pipe);
|
|
|
|
I915_WRITE(reg, enable_mask | status_mask);
|
|
POSTING_READ(reg);
|
|
}
|
|
|
|
void i915_disable_pipestat(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe, u32 status_mask)
|
|
{
|
|
i915_reg_t reg = PIPESTAT(pipe);
|
|
u32 enable_mask;
|
|
|
|
WARN_ONCE(status_mask & ~PIPESTAT_INT_STATUS_MASK,
|
|
"pipe %c: status_mask=0x%x\n",
|
|
pipe_name(pipe), status_mask);
|
|
|
|
lockdep_assert_held(&dev_priv->irq_lock);
|
|
WARN_ON(!intel_irqs_enabled(dev_priv));
|
|
|
|
if ((dev_priv->pipestat_irq_mask[pipe] & status_mask) == 0)
|
|
return;
|
|
|
|
dev_priv->pipestat_irq_mask[pipe] &= ~status_mask;
|
|
enable_mask = i915_pipestat_enable_mask(dev_priv, pipe);
|
|
|
|
I915_WRITE(reg, enable_mask | status_mask);
|
|
POSTING_READ(reg);
|
|
}
|
|
|
|
/**
|
|
* i915_enable_asle_pipestat - enable ASLE pipestat for OpRegion
|
|
* @dev_priv: i915 device private
|
|
*/
|
|
static void i915_enable_asle_pipestat(struct drm_i915_private *dev_priv)
|
|
{
|
|
if (!dev_priv->opregion.asle || !IS_MOBILE(dev_priv))
|
|
return;
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
|
|
i915_enable_pipestat(dev_priv, PIPE_B, PIPE_LEGACY_BLC_EVENT_STATUS);
|
|
if (INTEL_GEN(dev_priv) >= 4)
|
|
i915_enable_pipestat(dev_priv, PIPE_A,
|
|
PIPE_LEGACY_BLC_EVENT_STATUS);
|
|
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
}
|
|
|
|
/*
|
|
* This timing diagram depicts the video signal in and
|
|
* around the vertical blanking period.
|
|
*
|
|
* Assumptions about the fictitious mode used in this example:
|
|
* vblank_start >= 3
|
|
* vsync_start = vblank_start + 1
|
|
* vsync_end = vblank_start + 2
|
|
* vtotal = vblank_start + 3
|
|
*
|
|
* start of vblank:
|
|
* latch double buffered registers
|
|
* increment frame counter (ctg+)
|
|
* generate start of vblank interrupt (gen4+)
|
|
* |
|
|
* | frame start:
|
|
* | generate frame start interrupt (aka. vblank interrupt) (gmch)
|
|
* | may be shifted forward 1-3 extra lines via PIPECONF
|
|
* | |
|
|
* | | start of vsync:
|
|
* | | generate vsync interrupt
|
|
* | | |
|
|
* ___xxxx___ ___xxxx___ ___xxxx___ ___xxxx___ ___xxxx___ ___xxxx
|
|
* . \hs/ . \hs/ \hs/ \hs/ . \hs/
|
|
* ----va---> <-----------------vb--------------------> <--------va-------------
|
|
* | | <----vs-----> |
|
|
* -vbs-----> <---vbs+1---> <---vbs+2---> <-----0-----> <-----1-----> <-----2--- (scanline counter gen2)
|
|
* -vbs-2---> <---vbs-1---> <---vbs-----> <---vbs+1---> <---vbs+2---> <-----0--- (scanline counter gen3+)
|
|
* -vbs-2---> <---vbs-2---> <---vbs-1---> <---vbs-----> <---vbs+1---> <---vbs+2- (scanline counter hsw+ hdmi)
|
|
* | | |
|
|
* last visible pixel first visible pixel
|
|
* | increment frame counter (gen3/4)
|
|
* pixel counter = vblank_start * htotal pixel counter = 0 (gen3/4)
|
|
*
|
|
* x = horizontal active
|
|
* _ = horizontal blanking
|
|
* hs = horizontal sync
|
|
* va = vertical active
|
|
* vb = vertical blanking
|
|
* vs = vertical sync
|
|
* vbs = vblank_start (number)
|
|
*
|
|
* Summary:
|
|
* - most events happen at the start of horizontal sync
|
|
* - frame start happens at the start of horizontal blank, 1-4 lines
|
|
* (depending on PIPECONF settings) after the start of vblank
|
|
* - gen3/4 pixel and frame counter are synchronized with the start
|
|
* of horizontal active on the first line of vertical active
|
|
*/
|
|
|
|
/* Called from drm generic code, passed a 'crtc', which
|
|
* we use as a pipe index
|
|
*/
|
|
static u32 i915_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
i915_reg_t high_frame, low_frame;
|
|
u32 high1, high2, low, pixel, vbl_start, hsync_start, htotal;
|
|
const struct drm_display_mode *mode = &dev->vblank[pipe].hwmode;
|
|
unsigned long irqflags;
|
|
|
|
htotal = mode->crtc_htotal;
|
|
hsync_start = mode->crtc_hsync_start;
|
|
vbl_start = mode->crtc_vblank_start;
|
|
if (mode->flags & DRM_MODE_FLAG_INTERLACE)
|
|
vbl_start = DIV_ROUND_UP(vbl_start, 2);
|
|
|
|
/* Convert to pixel count */
|
|
vbl_start *= htotal;
|
|
|
|
/* Start of vblank event occurs at start of hsync */
|
|
vbl_start -= htotal - hsync_start;
|
|
|
|
high_frame = PIPEFRAME(pipe);
|
|
low_frame = PIPEFRAMEPIXEL(pipe);
|
|
|
|
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
|
|
|
|
/*
|
|
* High & low register fields aren't synchronized, so make sure
|
|
* we get a low value that's stable across two reads of the high
|
|
* register.
|
|
*/
|
|
do {
|
|
high1 = I915_READ_FW(high_frame) & PIPE_FRAME_HIGH_MASK;
|
|
low = I915_READ_FW(low_frame);
|
|
high2 = I915_READ_FW(high_frame) & PIPE_FRAME_HIGH_MASK;
|
|
} while (high1 != high2);
|
|
|
|
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
|
|
|
|
high1 >>= PIPE_FRAME_HIGH_SHIFT;
|
|
pixel = low & PIPE_PIXEL_MASK;
|
|
low >>= PIPE_FRAME_LOW_SHIFT;
|
|
|
|
/*
|
|
* The frame counter increments at beginning of active.
|
|
* Cook up a vblank counter by also checking the pixel
|
|
* counter against vblank start.
|
|
*/
|
|
return (((high1 << 8) | low) + (pixel >= vbl_start)) & 0xffffff;
|
|
}
|
|
|
|
static u32 g4x_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
return I915_READ(PIPE_FRMCOUNT_G4X(pipe));
|
|
}
|
|
|
|
/*
|
|
* On certain encoders on certain platforms, pipe
|
|
* scanline register will not work to get the scanline,
|
|
* since the timings are driven from the PORT or issues
|
|
* with scanline register updates.
|
|
* This function will use Framestamp and current
|
|
* timestamp registers to calculate the scanline.
|
|
*/
|
|
static u32 __intel_get_crtc_scanline_from_timestamp(struct intel_crtc *crtc)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
|
|
struct drm_vblank_crtc *vblank =
|
|
&crtc->base.dev->vblank[drm_crtc_index(&crtc->base)];
|
|
const struct drm_display_mode *mode = &vblank->hwmode;
|
|
u32 vblank_start = mode->crtc_vblank_start;
|
|
u32 vtotal = mode->crtc_vtotal;
|
|
u32 htotal = mode->crtc_htotal;
|
|
u32 clock = mode->crtc_clock;
|
|
u32 scanline, scan_prev_time, scan_curr_time, scan_post_time;
|
|
|
|
/*
|
|
* To avoid the race condition where we might cross into the
|
|
* next vblank just between the PIPE_FRMTMSTMP and TIMESTAMP_CTR
|
|
* reads. We make sure we read PIPE_FRMTMSTMP and TIMESTAMP_CTR
|
|
* during the same frame.
|
|
*/
|
|
do {
|
|
/*
|
|
* This field provides read back of the display
|
|
* pipe frame time stamp. The time stamp value
|
|
* is sampled at every start of vertical blank.
|
|
*/
|
|
scan_prev_time = I915_READ_FW(PIPE_FRMTMSTMP(crtc->pipe));
|
|
|
|
/*
|
|
* The TIMESTAMP_CTR register has the current
|
|
* time stamp value.
|
|
*/
|
|
scan_curr_time = I915_READ_FW(IVB_TIMESTAMP_CTR);
|
|
|
|
scan_post_time = I915_READ_FW(PIPE_FRMTMSTMP(crtc->pipe));
|
|
} while (scan_post_time != scan_prev_time);
|
|
|
|
scanline = div_u64(mul_u32_u32(scan_curr_time - scan_prev_time,
|
|
clock), 1000 * htotal);
|
|
scanline = min(scanline, vtotal - 1);
|
|
scanline = (scanline + vblank_start) % vtotal;
|
|
|
|
return scanline;
|
|
}
|
|
|
|
/* I915_READ_FW, only for fast reads of display block, no need for forcewake etc. */
|
|
static int __intel_get_crtc_scanline(struct intel_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->base.dev;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
const struct drm_display_mode *mode;
|
|
struct drm_vblank_crtc *vblank;
|
|
enum pipe pipe = crtc->pipe;
|
|
int position, vtotal;
|
|
|
|
if (!crtc->active)
|
|
return -1;
|
|
|
|
vblank = &crtc->base.dev->vblank[drm_crtc_index(&crtc->base)];
|
|
mode = &vblank->hwmode;
|
|
|
|
if (mode->private_flags & I915_MODE_FLAG_GET_SCANLINE_FROM_TIMESTAMP)
|
|
return __intel_get_crtc_scanline_from_timestamp(crtc);
|
|
|
|
vtotal = mode->crtc_vtotal;
|
|
if (mode->flags & DRM_MODE_FLAG_INTERLACE)
|
|
vtotal /= 2;
|
|
|
|
if (IS_GEN2(dev_priv))
|
|
position = I915_READ_FW(PIPEDSL(pipe)) & DSL_LINEMASK_GEN2;
|
|
else
|
|
position = I915_READ_FW(PIPEDSL(pipe)) & DSL_LINEMASK_GEN3;
|
|
|
|
/*
|
|
* On HSW, the DSL reg (0x70000) appears to return 0 if we
|
|
* read it just before the start of vblank. So try it again
|
|
* so we don't accidentally end up spanning a vblank frame
|
|
* increment, causing the pipe_update_end() code to squak at us.
|
|
*
|
|
* The nature of this problem means we can't simply check the ISR
|
|
* bit and return the vblank start value; nor can we use the scanline
|
|
* debug register in the transcoder as it appears to have the same
|
|
* problem. We may need to extend this to include other platforms,
|
|
* but so far testing only shows the problem on HSW.
|
|
*/
|
|
if (HAS_DDI(dev_priv) && !position) {
|
|
int i, temp;
|
|
|
|
for (i = 0; i < 100; i++) {
|
|
udelay(1);
|
|
temp = I915_READ_FW(PIPEDSL(pipe)) & DSL_LINEMASK_GEN3;
|
|
if (temp != position) {
|
|
position = temp;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* See update_scanline_offset() for the details on the
|
|
* scanline_offset adjustment.
|
|
*/
|
|
return (position + crtc->scanline_offset) % vtotal;
|
|
}
|
|
|
|
static bool i915_get_crtc_scanoutpos(struct drm_device *dev, unsigned int pipe,
|
|
bool in_vblank_irq, int *vpos, int *hpos,
|
|
ktime_t *stime, ktime_t *etime,
|
|
const struct drm_display_mode *mode)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
struct intel_crtc *intel_crtc = intel_get_crtc_for_pipe(dev_priv,
|
|
pipe);
|
|
int position;
|
|
int vbl_start, vbl_end, hsync_start, htotal, vtotal;
|
|
unsigned long irqflags;
|
|
|
|
if (WARN_ON(!mode->crtc_clock)) {
|
|
DRM_DEBUG_DRIVER("trying to get scanoutpos for disabled "
|
|
"pipe %c\n", pipe_name(pipe));
|
|
return false;
|
|
}
|
|
|
|
htotal = mode->crtc_htotal;
|
|
hsync_start = mode->crtc_hsync_start;
|
|
vtotal = mode->crtc_vtotal;
|
|
vbl_start = mode->crtc_vblank_start;
|
|
vbl_end = mode->crtc_vblank_end;
|
|
|
|
if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
|
|
vbl_start = DIV_ROUND_UP(vbl_start, 2);
|
|
vbl_end /= 2;
|
|
vtotal /= 2;
|
|
}
|
|
|
|
/*
|
|
* Lock uncore.lock, as we will do multiple timing critical raw
|
|
* register reads, potentially with preemption disabled, so the
|
|
* following code must not block on uncore.lock.
|
|
*/
|
|
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
|
|
|
|
/* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
|
|
|
|
/* Get optional system timestamp before query. */
|
|
if (stime)
|
|
*stime = ktime_get();
|
|
|
|
if (IS_GEN2(dev_priv) || IS_G4X(dev_priv) || INTEL_GEN(dev_priv) >= 5) {
|
|
/* No obvious pixelcount register. Only query vertical
|
|
* scanout position from Display scan line register.
|
|
*/
|
|
position = __intel_get_crtc_scanline(intel_crtc);
|
|
} else {
|
|
/* Have access to pixelcount since start of frame.
|
|
* We can split this into vertical and horizontal
|
|
* scanout position.
|
|
*/
|
|
position = (I915_READ_FW(PIPEFRAMEPIXEL(pipe)) & PIPE_PIXEL_MASK) >> PIPE_PIXEL_SHIFT;
|
|
|
|
/* convert to pixel counts */
|
|
vbl_start *= htotal;
|
|
vbl_end *= htotal;
|
|
vtotal *= htotal;
|
|
|
|
/*
|
|
* In interlaced modes, the pixel counter counts all pixels,
|
|
* so one field will have htotal more pixels. In order to avoid
|
|
* the reported position from jumping backwards when the pixel
|
|
* counter is beyond the length of the shorter field, just
|
|
* clamp the position the length of the shorter field. This
|
|
* matches how the scanline counter based position works since
|
|
* the scanline counter doesn't count the two half lines.
|
|
*/
|
|
if (position >= vtotal)
|
|
position = vtotal - 1;
|
|
|
|
/*
|
|
* Start of vblank interrupt is triggered at start of hsync,
|
|
* just prior to the first active line of vblank. However we
|
|
* consider lines to start at the leading edge of horizontal
|
|
* active. So, should we get here before we've crossed into
|
|
* the horizontal active of the first line in vblank, we would
|
|
* not set the DRM_SCANOUTPOS_INVBL flag. In order to fix that,
|
|
* always add htotal-hsync_start to the current pixel position.
|
|
*/
|
|
position = (position + htotal - hsync_start) % vtotal;
|
|
}
|
|
|
|
/* Get optional system timestamp after query. */
|
|
if (etime)
|
|
*etime = ktime_get();
|
|
|
|
/* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
|
|
|
|
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
|
|
|
|
/*
|
|
* While in vblank, position will be negative
|
|
* counting up towards 0 at vbl_end. And outside
|
|
* vblank, position will be positive counting
|
|
* up since vbl_end.
|
|
*/
|
|
if (position >= vbl_start)
|
|
position -= vbl_end;
|
|
else
|
|
position += vtotal - vbl_end;
|
|
|
|
if (IS_GEN2(dev_priv) || IS_G4X(dev_priv) || INTEL_GEN(dev_priv) >= 5) {
|
|
*vpos = position;
|
|
*hpos = 0;
|
|
} else {
|
|
*vpos = position / htotal;
|
|
*hpos = position - (*vpos * htotal);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
int intel_get_crtc_scanline(struct intel_crtc *crtc)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
|
|
unsigned long irqflags;
|
|
int position;
|
|
|
|
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
|
|
position = __intel_get_crtc_scanline(crtc);
|
|
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
|
|
|
|
return position;
|
|
}
|
|
|
|
static void ironlake_rps_change_irq_handler(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 busy_up, busy_down, max_avg, min_avg;
|
|
u8 new_delay;
|
|
|
|
spin_lock(&mchdev_lock);
|
|
|
|
I915_WRITE16(MEMINTRSTS, I915_READ(MEMINTRSTS));
|
|
|
|
new_delay = dev_priv->ips.cur_delay;
|
|
|
|
I915_WRITE16(MEMINTRSTS, MEMINT_EVAL_CHG);
|
|
busy_up = I915_READ(RCPREVBSYTUPAVG);
|
|
busy_down = I915_READ(RCPREVBSYTDNAVG);
|
|
max_avg = I915_READ(RCBMAXAVG);
|
|
min_avg = I915_READ(RCBMINAVG);
|
|
|
|
/* Handle RCS change request from hw */
|
|
if (busy_up > max_avg) {
|
|
if (dev_priv->ips.cur_delay != dev_priv->ips.max_delay)
|
|
new_delay = dev_priv->ips.cur_delay - 1;
|
|
if (new_delay < dev_priv->ips.max_delay)
|
|
new_delay = dev_priv->ips.max_delay;
|
|
} else if (busy_down < min_avg) {
|
|
if (dev_priv->ips.cur_delay != dev_priv->ips.min_delay)
|
|
new_delay = dev_priv->ips.cur_delay + 1;
|
|
if (new_delay > dev_priv->ips.min_delay)
|
|
new_delay = dev_priv->ips.min_delay;
|
|
}
|
|
|
|
if (ironlake_set_drps(dev_priv, new_delay))
|
|
dev_priv->ips.cur_delay = new_delay;
|
|
|
|
spin_unlock(&mchdev_lock);
|
|
|
|
return;
|
|
}
|
|
|
|
static void notify_ring(struct intel_engine_cs *engine)
|
|
{
|
|
struct i915_request *rq = NULL;
|
|
struct intel_wait *wait;
|
|
|
|
if (!engine->breadcrumbs.irq_armed)
|
|
return;
|
|
|
|
atomic_inc(&engine->irq_count);
|
|
set_bit(ENGINE_IRQ_BREADCRUMB, &engine->irq_posted);
|
|
|
|
spin_lock(&engine->breadcrumbs.irq_lock);
|
|
wait = engine->breadcrumbs.irq_wait;
|
|
if (wait) {
|
|
bool wakeup = engine->irq_seqno_barrier;
|
|
|
|
/* We use a callback from the dma-fence to submit
|
|
* requests after waiting on our own requests. To
|
|
* ensure minimum delay in queuing the next request to
|
|
* hardware, signal the fence now rather than wait for
|
|
* the signaler to be woken up. We still wake up the
|
|
* waiter in order to handle the irq-seqno coherency
|
|
* issues (we may receive the interrupt before the
|
|
* seqno is written, see __i915_request_irq_complete())
|
|
* and to handle coalescing of multiple seqno updates
|
|
* and many waiters.
|
|
*/
|
|
if (i915_seqno_passed(intel_engine_get_seqno(engine),
|
|
wait->seqno)) {
|
|
struct i915_request *waiter = wait->request;
|
|
|
|
wakeup = true;
|
|
if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
|
|
&waiter->fence.flags) &&
|
|
intel_wait_check_request(wait, waiter))
|
|
rq = i915_request_get(waiter);
|
|
}
|
|
|
|
if (wakeup)
|
|
wake_up_process(wait->tsk);
|
|
} else {
|
|
if (engine->breadcrumbs.irq_armed)
|
|
__intel_engine_disarm_breadcrumbs(engine);
|
|
}
|
|
spin_unlock(&engine->breadcrumbs.irq_lock);
|
|
|
|
if (rq) {
|
|
dma_fence_signal(&rq->fence);
|
|
GEM_BUG_ON(!i915_request_completed(rq));
|
|
i915_request_put(rq);
|
|
}
|
|
|
|
trace_intel_engine_notify(engine, wait);
|
|
}
|
|
|
|
static void vlv_c0_read(struct drm_i915_private *dev_priv,
|
|
struct intel_rps_ei *ei)
|
|
{
|
|
ei->ktime = ktime_get_raw();
|
|
ei->render_c0 = I915_READ(VLV_RENDER_C0_COUNT);
|
|
ei->media_c0 = I915_READ(VLV_MEDIA_C0_COUNT);
|
|
}
|
|
|
|
void gen6_rps_reset_ei(struct drm_i915_private *dev_priv)
|
|
{
|
|
memset(&dev_priv->gt_pm.rps.ei, 0, sizeof(dev_priv->gt_pm.rps.ei));
|
|
}
|
|
|
|
static u32 vlv_wa_c0_ei(struct drm_i915_private *dev_priv, u32 pm_iir)
|
|
{
|
|
struct intel_rps *rps = &dev_priv->gt_pm.rps;
|
|
const struct intel_rps_ei *prev = &rps->ei;
|
|
struct intel_rps_ei now;
|
|
u32 events = 0;
|
|
|
|
if ((pm_iir & GEN6_PM_RP_UP_EI_EXPIRED) == 0)
|
|
return 0;
|
|
|
|
vlv_c0_read(dev_priv, &now);
|
|
|
|
if (prev->ktime) {
|
|
u64 time, c0;
|
|
u32 render, media;
|
|
|
|
time = ktime_us_delta(now.ktime, prev->ktime);
|
|
|
|
time *= dev_priv->czclk_freq;
|
|
|
|
/* Workload can be split between render + media,
|
|
* e.g. SwapBuffers being blitted in X after being rendered in
|
|
* mesa. To account for this we need to combine both engines
|
|
* into our activity counter.
|
|
*/
|
|
render = now.render_c0 - prev->render_c0;
|
|
media = now.media_c0 - prev->media_c0;
|
|
c0 = max(render, media);
|
|
c0 *= 1000 * 100 << 8; /* to usecs and scale to threshold% */
|
|
|
|
if (c0 > time * rps->up_threshold)
|
|
events = GEN6_PM_RP_UP_THRESHOLD;
|
|
else if (c0 < time * rps->down_threshold)
|
|
events = GEN6_PM_RP_DOWN_THRESHOLD;
|
|
}
|
|
|
|
rps->ei = now;
|
|
return events;
|
|
}
|
|
|
|
static void gen6_pm_rps_work(struct work_struct *work)
|
|
{
|
|
struct drm_i915_private *dev_priv =
|
|
container_of(work, struct drm_i915_private, gt_pm.rps.work);
|
|
struct intel_rps *rps = &dev_priv->gt_pm.rps;
|
|
bool client_boost = false;
|
|
int new_delay, adj, min, max;
|
|
u32 pm_iir = 0;
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
if (rps->interrupts_enabled) {
|
|
pm_iir = fetch_and_zero(&rps->pm_iir);
|
|
client_boost = atomic_read(&rps->num_waiters);
|
|
}
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
|
|
/* Make sure we didn't queue anything we're not going to process. */
|
|
WARN_ON(pm_iir & ~dev_priv->pm_rps_events);
|
|
if ((pm_iir & dev_priv->pm_rps_events) == 0 && !client_boost)
|
|
goto out;
|
|
|
|
mutex_lock(&dev_priv->pcu_lock);
|
|
|
|
pm_iir |= vlv_wa_c0_ei(dev_priv, pm_iir);
|
|
|
|
adj = rps->last_adj;
|
|
new_delay = rps->cur_freq;
|
|
min = rps->min_freq_softlimit;
|
|
max = rps->max_freq_softlimit;
|
|
if (client_boost)
|
|
max = rps->max_freq;
|
|
if (client_boost && new_delay < rps->boost_freq) {
|
|
new_delay = rps->boost_freq;
|
|
adj = 0;
|
|
} else if (pm_iir & GEN6_PM_RP_UP_THRESHOLD) {
|
|
if (adj > 0)
|
|
adj *= 2;
|
|
else /* CHV needs even encode values */
|
|
adj = IS_CHERRYVIEW(dev_priv) ? 2 : 1;
|
|
|
|
if (new_delay >= rps->max_freq_softlimit)
|
|
adj = 0;
|
|
} else if (client_boost) {
|
|
adj = 0;
|
|
} else if (pm_iir & GEN6_PM_RP_DOWN_TIMEOUT) {
|
|
if (rps->cur_freq > rps->efficient_freq)
|
|
new_delay = rps->efficient_freq;
|
|
else if (rps->cur_freq > rps->min_freq_softlimit)
|
|
new_delay = rps->min_freq_softlimit;
|
|
adj = 0;
|
|
} else if (pm_iir & GEN6_PM_RP_DOWN_THRESHOLD) {
|
|
if (adj < 0)
|
|
adj *= 2;
|
|
else /* CHV needs even encode values */
|
|
adj = IS_CHERRYVIEW(dev_priv) ? -2 : -1;
|
|
|
|
if (new_delay <= rps->min_freq_softlimit)
|
|
adj = 0;
|
|
} else { /* unknown event */
|
|
adj = 0;
|
|
}
|
|
|
|
rps->last_adj = adj;
|
|
|
|
/* sysfs frequency interfaces may have snuck in while servicing the
|
|
* interrupt
|
|
*/
|
|
new_delay += adj;
|
|
new_delay = clamp_t(int, new_delay, min, max);
|
|
|
|
if (intel_set_rps(dev_priv, new_delay)) {
|
|
DRM_DEBUG_DRIVER("Failed to set new GPU frequency\n");
|
|
rps->last_adj = 0;
|
|
}
|
|
|
|
mutex_unlock(&dev_priv->pcu_lock);
|
|
|
|
out:
|
|
/* Make sure not to corrupt PMIMR state used by ringbuffer on GEN6 */
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
if (rps->interrupts_enabled)
|
|
gen6_unmask_pm_irq(dev_priv, dev_priv->pm_rps_events);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
}
|
|
|
|
|
|
/**
|
|
* ivybridge_parity_work - Workqueue called when a parity error interrupt
|
|
* occurred.
|
|
* @work: workqueue struct
|
|
*
|
|
* Doesn't actually do anything except notify userspace. As a consequence of
|
|
* this event, userspace should try to remap the bad rows since statistically
|
|
* it is likely the same row is more likely to go bad again.
|
|
*/
|
|
static void ivybridge_parity_work(struct work_struct *work)
|
|
{
|
|
struct drm_i915_private *dev_priv =
|
|
container_of(work, typeof(*dev_priv), l3_parity.error_work);
|
|
u32 error_status, row, bank, subbank;
|
|
char *parity_event[6];
|
|
uint32_t misccpctl;
|
|
uint8_t slice = 0;
|
|
|
|
/* We must turn off DOP level clock gating to access the L3 registers.
|
|
* In order to prevent a get/put style interface, acquire struct mutex
|
|
* any time we access those registers.
|
|
*/
|
|
mutex_lock(&dev_priv->drm.struct_mutex);
|
|
|
|
/* If we've screwed up tracking, just let the interrupt fire again */
|
|
if (WARN_ON(!dev_priv->l3_parity.which_slice))
|
|
goto out;
|
|
|
|
misccpctl = I915_READ(GEN7_MISCCPCTL);
|
|
I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE);
|
|
POSTING_READ(GEN7_MISCCPCTL);
|
|
|
|
while ((slice = ffs(dev_priv->l3_parity.which_slice)) != 0) {
|
|
i915_reg_t reg;
|
|
|
|
slice--;
|
|
if (WARN_ON_ONCE(slice >= NUM_L3_SLICES(dev_priv)))
|
|
break;
|
|
|
|
dev_priv->l3_parity.which_slice &= ~(1<<slice);
|
|
|
|
reg = GEN7_L3CDERRST1(slice);
|
|
|
|
error_status = I915_READ(reg);
|
|
row = GEN7_PARITY_ERROR_ROW(error_status);
|
|
bank = GEN7_PARITY_ERROR_BANK(error_status);
|
|
subbank = GEN7_PARITY_ERROR_SUBBANK(error_status);
|
|
|
|
I915_WRITE(reg, GEN7_PARITY_ERROR_VALID | GEN7_L3CDERRST1_ENABLE);
|
|
POSTING_READ(reg);
|
|
|
|
parity_event[0] = I915_L3_PARITY_UEVENT "=1";
|
|
parity_event[1] = kasprintf(GFP_KERNEL, "ROW=%d", row);
|
|
parity_event[2] = kasprintf(GFP_KERNEL, "BANK=%d", bank);
|
|
parity_event[3] = kasprintf(GFP_KERNEL, "SUBBANK=%d", subbank);
|
|
parity_event[4] = kasprintf(GFP_KERNEL, "SLICE=%d", slice);
|
|
parity_event[5] = NULL;
|
|
|
|
kobject_uevent_env(&dev_priv->drm.primary->kdev->kobj,
|
|
KOBJ_CHANGE, parity_event);
|
|
|
|
DRM_DEBUG("Parity error: Slice = %d, Row = %d, Bank = %d, Sub bank = %d.\n",
|
|
slice, row, bank, subbank);
|
|
|
|
kfree(parity_event[4]);
|
|
kfree(parity_event[3]);
|
|
kfree(parity_event[2]);
|
|
kfree(parity_event[1]);
|
|
}
|
|
|
|
I915_WRITE(GEN7_MISCCPCTL, misccpctl);
|
|
|
|
out:
|
|
WARN_ON(dev_priv->l3_parity.which_slice);
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
gen5_enable_gt_irq(dev_priv, GT_PARITY_ERROR(dev_priv));
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
|
|
mutex_unlock(&dev_priv->drm.struct_mutex);
|
|
}
|
|
|
|
static void ivybridge_parity_error_irq_handler(struct drm_i915_private *dev_priv,
|
|
u32 iir)
|
|
{
|
|
if (!HAS_L3_DPF(dev_priv))
|
|
return;
|
|
|
|
spin_lock(&dev_priv->irq_lock);
|
|
gen5_disable_gt_irq(dev_priv, GT_PARITY_ERROR(dev_priv));
|
|
spin_unlock(&dev_priv->irq_lock);
|
|
|
|
iir &= GT_PARITY_ERROR(dev_priv);
|
|
if (iir & GT_RENDER_L3_PARITY_ERROR_INTERRUPT_S1)
|
|
dev_priv->l3_parity.which_slice |= 1 << 1;
|
|
|
|
if (iir & GT_RENDER_L3_PARITY_ERROR_INTERRUPT)
|
|
dev_priv->l3_parity.which_slice |= 1 << 0;
|
|
|
|
queue_work(dev_priv->wq, &dev_priv->l3_parity.error_work);
|
|
}
|
|
|
|
static void ilk_gt_irq_handler(struct drm_i915_private *dev_priv,
|
|
u32 gt_iir)
|
|
{
|
|
if (gt_iir & GT_RENDER_USER_INTERRUPT)
|
|
notify_ring(dev_priv->engine[RCS]);
|
|
if (gt_iir & ILK_BSD_USER_INTERRUPT)
|
|
notify_ring(dev_priv->engine[VCS]);
|
|
}
|
|
|
|
static void snb_gt_irq_handler(struct drm_i915_private *dev_priv,
|
|
u32 gt_iir)
|
|
{
|
|
if (gt_iir & GT_RENDER_USER_INTERRUPT)
|
|
notify_ring(dev_priv->engine[RCS]);
|
|
if (gt_iir & GT_BSD_USER_INTERRUPT)
|
|
notify_ring(dev_priv->engine[VCS]);
|
|
if (gt_iir & GT_BLT_USER_INTERRUPT)
|
|
notify_ring(dev_priv->engine[BCS]);
|
|
|
|
if (gt_iir & (GT_BLT_CS_ERROR_INTERRUPT |
|
|
GT_BSD_CS_ERROR_INTERRUPT |
|
|
GT_RENDER_CS_MASTER_ERROR_INTERRUPT))
|
|
DRM_DEBUG("Command parser error, gt_iir 0x%08x\n", gt_iir);
|
|
|
|
if (gt_iir & GT_PARITY_ERROR(dev_priv))
|
|
ivybridge_parity_error_irq_handler(dev_priv, gt_iir);
|
|
}
|
|
|
|
static void
|
|
gen8_cs_irq_handler(struct intel_engine_cs *engine, u32 iir)
|
|
{
|
|
struct intel_engine_execlists * const execlists = &engine->execlists;
|
|
bool tasklet = false;
|
|
|
|
if (iir & GT_CONTEXT_SWITCH_INTERRUPT) {
|
|
if (READ_ONCE(engine->execlists.active))
|
|
tasklet = !test_and_set_bit(ENGINE_IRQ_EXECLIST,
|
|
&engine->irq_posted);
|
|
}
|
|
|
|
if (iir & GT_RENDER_USER_INTERRUPT) {
|
|
notify_ring(engine);
|
|
tasklet |= USES_GUC_SUBMISSION(engine->i915);
|
|
}
|
|
|
|
if (tasklet)
|
|
tasklet_hi_schedule(&execlists->tasklet);
|
|
}
|
|
|
|
static void gen8_gt_irq_ack(struct drm_i915_private *i915,
|
|
u32 master_ctl, u32 gt_iir[4])
|
|
{
|
|
void __iomem * const regs = i915->regs;
|
|
|
|
#define GEN8_GT_IRQS (GEN8_GT_RCS_IRQ | \
|
|
GEN8_GT_BCS_IRQ | \
|
|
GEN8_GT_VCS1_IRQ | \
|
|
GEN8_GT_VCS2_IRQ | \
|
|
GEN8_GT_VECS_IRQ | \
|
|
GEN8_GT_PM_IRQ | \
|
|
GEN8_GT_GUC_IRQ)
|
|
|
|
if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) {
|
|
gt_iir[0] = raw_reg_read(regs, GEN8_GT_IIR(0));
|
|
if (likely(gt_iir[0]))
|
|
raw_reg_write(regs, GEN8_GT_IIR(0), gt_iir[0]);
|
|
}
|
|
|
|
if (master_ctl & (GEN8_GT_VCS1_IRQ | GEN8_GT_VCS2_IRQ)) {
|
|
gt_iir[1] = raw_reg_read(regs, GEN8_GT_IIR(1));
|
|
if (likely(gt_iir[1]))
|
|
raw_reg_write(regs, GEN8_GT_IIR(1), gt_iir[1]);
|
|
}
|
|
|
|
if (master_ctl & (GEN8_GT_PM_IRQ | GEN8_GT_GUC_IRQ)) {
|
|
gt_iir[2] = raw_reg_read(regs, GEN8_GT_IIR(2));
|
|
if (likely(gt_iir[2] & (i915->pm_rps_events |
|
|
i915->pm_guc_events)))
|
|
raw_reg_write(regs, GEN8_GT_IIR(2),
|
|
gt_iir[2] & (i915->pm_rps_events |
|
|
i915->pm_guc_events));
|
|
}
|
|
|
|
if (master_ctl & GEN8_GT_VECS_IRQ) {
|
|
gt_iir[3] = raw_reg_read(regs, GEN8_GT_IIR(3));
|
|
if (likely(gt_iir[3]))
|
|
raw_reg_write(regs, GEN8_GT_IIR(3), gt_iir[3]);
|
|
}
|
|
}
|
|
|
|
static void gen8_gt_irq_handler(struct drm_i915_private *i915,
|
|
u32 master_ctl, u32 gt_iir[4])
|
|
{
|
|
if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) {
|
|
gen8_cs_irq_handler(i915->engine[RCS],
|
|
gt_iir[0] >> GEN8_RCS_IRQ_SHIFT);
|
|
gen8_cs_irq_handler(i915->engine[BCS],
|
|
gt_iir[0] >> GEN8_BCS_IRQ_SHIFT);
|
|
}
|
|
|
|
if (master_ctl & (GEN8_GT_VCS1_IRQ | GEN8_GT_VCS2_IRQ)) {
|
|
gen8_cs_irq_handler(i915->engine[VCS],
|
|
gt_iir[1] >> GEN8_VCS1_IRQ_SHIFT);
|
|
gen8_cs_irq_handler(i915->engine[VCS2],
|
|
gt_iir[1] >> GEN8_VCS2_IRQ_SHIFT);
|
|
}
|
|
|
|
if (master_ctl & GEN8_GT_VECS_IRQ) {
|
|
gen8_cs_irq_handler(i915->engine[VECS],
|
|
gt_iir[3] >> GEN8_VECS_IRQ_SHIFT);
|
|
}
|
|
|
|
if (master_ctl & (GEN8_GT_PM_IRQ | GEN8_GT_GUC_IRQ)) {
|
|
gen6_rps_irq_handler(i915, gt_iir[2]);
|
|
gen9_guc_irq_handler(i915, gt_iir[2]);
|
|
}
|
|
}
|
|
|
|
static bool bxt_port_hotplug_long_detect(enum port port, u32 val)
|
|
{
|
|
switch (port) {
|
|
case PORT_A:
|
|
return val & PORTA_HOTPLUG_LONG_DETECT;
|
|
case PORT_B:
|
|
return val & PORTB_HOTPLUG_LONG_DETECT;
|
|
case PORT_C:
|
|
return val & PORTC_HOTPLUG_LONG_DETECT;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool spt_port_hotplug2_long_detect(enum port port, u32 val)
|
|
{
|
|
switch (port) {
|
|
case PORT_E:
|
|
return val & PORTE_HOTPLUG_LONG_DETECT;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool spt_port_hotplug_long_detect(enum port port, u32 val)
|
|
{
|
|
switch (port) {
|
|
case PORT_A:
|
|
return val & PORTA_HOTPLUG_LONG_DETECT;
|
|
case PORT_B:
|
|
return val & PORTB_HOTPLUG_LONG_DETECT;
|
|
case PORT_C:
|
|
return val & PORTC_HOTPLUG_LONG_DETECT;
|
|
case PORT_D:
|
|
return val & PORTD_HOTPLUG_LONG_DETECT;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool ilk_port_hotplug_long_detect(enum port port, u32 val)
|
|
{
|
|
switch (port) {
|
|
case PORT_A:
|
|
return val & DIGITAL_PORTA_HOTPLUG_LONG_DETECT;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool pch_port_hotplug_long_detect(enum port port, u32 val)
|
|
{
|
|
switch (port) {
|
|
case PORT_B:
|
|
return val & PORTB_HOTPLUG_LONG_DETECT;
|
|
case PORT_C:
|
|
return val & PORTC_HOTPLUG_LONG_DETECT;
|
|
case PORT_D:
|
|
return val & PORTD_HOTPLUG_LONG_DETECT;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool i9xx_port_hotplug_long_detect(enum port port, u32 val)
|
|
{
|
|
switch (port) {
|
|
case PORT_B:
|
|
return val & PORTB_HOTPLUG_INT_LONG_PULSE;
|
|
case PORT_C:
|
|
return val & PORTC_HOTPLUG_INT_LONG_PULSE;
|
|
case PORT_D:
|
|
return val & PORTD_HOTPLUG_INT_LONG_PULSE;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Get a bit mask of pins that have triggered, and which ones may be long.
|
|
* This can be called multiple times with the same masks to accumulate
|
|
* hotplug detection results from several registers.
|
|
*
|
|
* Note that the caller is expected to zero out the masks initially.
|
|
*/
|
|
static void intel_get_hpd_pins(struct drm_i915_private *dev_priv,
|
|
u32 *pin_mask, u32 *long_mask,
|
|
u32 hotplug_trigger, u32 dig_hotplug_reg,
|
|
const u32 hpd[HPD_NUM_PINS],
|
|
bool long_pulse_detect(enum port port, u32 val))
|
|
{
|
|
enum port port;
|
|
int i;
|
|
|
|
for_each_hpd_pin(i) {
|
|
if ((hpd[i] & hotplug_trigger) == 0)
|
|
continue;
|
|
|
|
*pin_mask |= BIT(i);
|
|
|
|
port = intel_hpd_pin_to_port(dev_priv, i);
|
|
if (port == PORT_NONE)
|
|
continue;
|
|
|
|
if (long_pulse_detect(port, dig_hotplug_reg))
|
|
*long_mask |= BIT(i);
|
|
}
|
|
|
|
DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x, dig 0x%08x, pins 0x%08x\n",
|
|
hotplug_trigger, dig_hotplug_reg, *pin_mask);
|
|
|
|
}
|
|
|
|
static void gmbus_irq_handler(struct drm_i915_private *dev_priv)
|
|
{
|
|
wake_up_all(&dev_priv->gmbus_wait_queue);
|
|
}
|
|
|
|
static void dp_aux_irq_handler(struct drm_i915_private *dev_priv)
|
|
{
|
|
wake_up_all(&dev_priv->gmbus_wait_queue);
|
|
}
|
|
|
|
#if defined(CONFIG_DEBUG_FS)
|
|
static void display_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe,
|
|
uint32_t crc0, uint32_t crc1,
|
|
uint32_t crc2, uint32_t crc3,
|
|
uint32_t crc4)
|
|
{
|
|
struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[pipe];
|
|
struct intel_pipe_crc_entry *entry;
|
|
struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
|
|
struct drm_driver *driver = dev_priv->drm.driver;
|
|
uint32_t crcs[5];
|
|
int head, tail;
|
|
|
|
spin_lock(&pipe_crc->lock);
|
|
if (pipe_crc->source && !crtc->base.crc.opened) {
|
|
if (!pipe_crc->entries) {
|
|
spin_unlock(&pipe_crc->lock);
|
|
DRM_DEBUG_KMS("spurious interrupt\n");
|
|
return;
|
|
}
|
|
|
|
head = pipe_crc->head;
|
|
tail = pipe_crc->tail;
|
|
|
|
if (CIRC_SPACE(head, tail, INTEL_PIPE_CRC_ENTRIES_NR) < 1) {
|
|
spin_unlock(&pipe_crc->lock);
|
|
DRM_ERROR("CRC buffer overflowing\n");
|
|
return;
|
|
}
|
|
|
|
entry = &pipe_crc->entries[head];
|
|
|
|
entry->frame = driver->get_vblank_counter(&dev_priv->drm, pipe);
|
|
entry->crc[0] = crc0;
|
|
entry->crc[1] = crc1;
|
|
entry->crc[2] = crc2;
|
|
entry->crc[3] = crc3;
|
|
entry->crc[4] = crc4;
|
|
|
|
head = (head + 1) & (INTEL_PIPE_CRC_ENTRIES_NR - 1);
|
|
pipe_crc->head = head;
|
|
|
|
spin_unlock(&pipe_crc->lock);
|
|
|
|
wake_up_interruptible(&pipe_crc->wq);
|
|
} else {
|
|
/*
|
|
* For some not yet identified reason, the first CRC is
|
|
* bonkers. So let's just wait for the next vblank and read
|
|
* out the buggy result.
|
|
*
|
|
* On GEN8+ sometimes the second CRC is bonkers as well, so
|
|
* don't trust that one either.
|
|
*/
|
|
if (pipe_crc->skipped <= 0 ||
|
|
(INTEL_GEN(dev_priv) >= 8 && pipe_crc->skipped == 1)) {
|
|
pipe_crc->skipped++;
|
|
spin_unlock(&pipe_crc->lock);
|
|
return;
|
|
}
|
|
spin_unlock(&pipe_crc->lock);
|
|
crcs[0] = crc0;
|
|
crcs[1] = crc1;
|
|
crcs[2] = crc2;
|
|
crcs[3] = crc3;
|
|
crcs[4] = crc4;
|
|
drm_crtc_add_crc_entry(&crtc->base, true,
|
|
drm_crtc_accurate_vblank_count(&crtc->base),
|
|
crcs);
|
|
}
|
|
}
|
|
#else
|
|
static inline void
|
|
display_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe,
|
|
uint32_t crc0, uint32_t crc1,
|
|
uint32_t crc2, uint32_t crc3,
|
|
uint32_t crc4) {}
|
|
#endif
|
|
|
|
|
|
static void hsw_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
display_pipe_crc_irq_handler(dev_priv, pipe,
|
|
I915_READ(PIPE_CRC_RES_1_IVB(pipe)),
|
|
0, 0, 0, 0);
|
|
}
|
|
|
|
static void ivb_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
display_pipe_crc_irq_handler(dev_priv, pipe,
|
|
I915_READ(PIPE_CRC_RES_1_IVB(pipe)),
|
|
I915_READ(PIPE_CRC_RES_2_IVB(pipe)),
|
|
I915_READ(PIPE_CRC_RES_3_IVB(pipe)),
|
|
I915_READ(PIPE_CRC_RES_4_IVB(pipe)),
|
|
I915_READ(PIPE_CRC_RES_5_IVB(pipe)));
|
|
}
|
|
|
|
static void i9xx_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
|
|
enum pipe pipe)
|
|
{
|
|
uint32_t res1, res2;
|
|
|
|
if (INTEL_GEN(dev_priv) >= 3)
|
|
res1 = I915_READ(PIPE_CRC_RES_RES1_I915(pipe));
|
|
else
|
|
res1 = 0;
|
|
|
|
if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv))
|
|
res2 = I915_READ(PIPE_CRC_RES_RES2_G4X(pipe));
|
|
else
|
|
res2 = 0;
|
|
|
|
display_pipe_crc_irq_handler(dev_priv, pipe,
|
|
I915_READ(PIPE_CRC_RES_RED(pipe)),
|
|
I915_READ(PIPE_CRC_RES_GREEN(pipe)),
|
|
I915_READ(PIPE_CRC_RES_BLUE(pipe)),
|
|
res1, res2);
|
|
}
|
|
|
|
/* The RPS events need forcewake, so we add them to a work queue and mask their
|
|
* IMR bits until the work is done. Other interrupts can be processed without
|
|
* the work queue. */
|
|
static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir)
|
|
{
|
|
struct intel_rps *rps = &dev_priv->gt_pm.rps;
|
|
|
|
if (pm_iir & dev_priv->pm_rps_events) {
|
|
spin_lock(&dev_priv->irq_lock);
|
|
gen6_mask_pm_irq(dev_priv, pm_iir & dev_priv->pm_rps_events);
|
|
if (rps->interrupts_enabled) {
|
|
rps->pm_iir |= pm_iir & dev_priv->pm_rps_events;
|
|
schedule_work(&rps->work);
|
|
}
|
|
spin_unlock(&dev_priv->irq_lock);
|
|
}
|
|
|
|
if (INTEL_GEN(dev_priv) >= 8)
|
|
return;
|
|
|
|
if (HAS_VEBOX(dev_priv)) {
|
|
if (pm_iir & PM_VEBOX_USER_INTERRUPT)
|
|
notify_ring(dev_priv->engine[VECS]);
|
|
|
|
if (pm_iir & PM_VEBOX_CS_ERROR_INTERRUPT)
|
|
DRM_DEBUG("Command parser error, pm_iir 0x%08x\n", pm_iir);
|
|
}
|
|
}
|
|
|
|
static void gen9_guc_irq_handler(struct drm_i915_private *dev_priv, u32 gt_iir)
|
|
{
|
|
if (gt_iir & GEN9_GUC_TO_HOST_INT_EVENT)
|
|
intel_guc_to_host_event_handler(&dev_priv->guc);
|
|
}
|
|
|
|
static void i9xx_pipestat_irq_reset(struct drm_i915_private *dev_priv)
|
|
{
|
|
enum pipe pipe;
|
|
|
|
for_each_pipe(dev_priv, pipe) {
|
|
I915_WRITE(PIPESTAT(pipe),
|
|
PIPESTAT_INT_STATUS_MASK |
|
|
PIPE_FIFO_UNDERRUN_STATUS);
|
|
|
|
dev_priv->pipestat_irq_mask[pipe] = 0;
|
|
}
|
|
}
|
|
|
|
static void i9xx_pipestat_irq_ack(struct drm_i915_private *dev_priv,
|
|
u32 iir, u32 pipe_stats[I915_MAX_PIPES])
|
|
{
|
|
int pipe;
|
|
|
|
spin_lock(&dev_priv->irq_lock);
|
|
|
|
if (!dev_priv->display_irqs_enabled) {
|
|
spin_unlock(&dev_priv->irq_lock);
|
|
return;
|
|
}
|
|
|
|
for_each_pipe(dev_priv, pipe) {
|
|
i915_reg_t reg;
|
|
u32 status_mask, enable_mask, iir_bit = 0;
|
|
|
|
/*
|
|
* PIPESTAT bits get signalled even when the interrupt is
|
|
* disabled with the mask bits, and some of the status bits do
|
|
* not generate interrupts at all (like the underrun bit). Hence
|
|
* we need to be careful that we only handle what we want to
|
|
* handle.
|
|
*/
|
|
|
|
/* fifo underruns are filterered in the underrun handler. */
|
|
status_mask = PIPE_FIFO_UNDERRUN_STATUS;
|
|
|
|
switch (pipe) {
|
|
case PIPE_A:
|
|
iir_bit = I915_DISPLAY_PIPE_A_EVENT_INTERRUPT;
|
|
break;
|
|
case PIPE_B:
|
|
iir_bit = I915_DISPLAY_PIPE_B_EVENT_INTERRUPT;
|
|
break;
|
|
case PIPE_C:
|
|
iir_bit = I915_DISPLAY_PIPE_C_EVENT_INTERRUPT;
|
|
break;
|
|
}
|
|
if (iir & iir_bit)
|
|
status_mask |= dev_priv->pipestat_irq_mask[pipe];
|
|
|
|
if (!status_mask)
|
|
continue;
|
|
|
|
reg = PIPESTAT(pipe);
|
|
pipe_stats[pipe] = I915_READ(reg) & status_mask;
|
|
enable_mask = i915_pipestat_enable_mask(dev_priv, pipe);
|
|
|
|
/*
|
|
* Clear the PIPE*STAT regs before the IIR
|
|
*/
|
|
if (pipe_stats[pipe])
|
|
I915_WRITE(reg, enable_mask | pipe_stats[pipe]);
|
|
}
|
|
spin_unlock(&dev_priv->irq_lock);
|
|
}
|
|
|
|
static void i8xx_pipestat_irq_handler(struct drm_i915_private *dev_priv,
|
|
u16 iir, u32 pipe_stats[I915_MAX_PIPES])
|
|
{
|
|
enum pipe pipe;
|
|
|
|
for_each_pipe(dev_priv, pipe) {
|
|
if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
|
|
drm_handle_vblank(&dev_priv->drm, pipe);
|
|
|
|
if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
|
|
i9xx_pipe_crc_irq_handler(dev_priv, pipe);
|
|
|
|
if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
|
|
intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
|
|
}
|
|
}
|
|
|
|
static void i915_pipestat_irq_handler(struct drm_i915_private *dev_priv,
|
|
u32 iir, u32 pipe_stats[I915_MAX_PIPES])
|
|
{
|
|
bool blc_event = false;
|
|
enum pipe pipe;
|
|
|
|
for_each_pipe(dev_priv, pipe) {
|
|
if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
|
|
drm_handle_vblank(&dev_priv->drm, pipe);
|
|
|
|
if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
|
|
blc_event = true;
|
|
|
|
if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
|
|
i9xx_pipe_crc_irq_handler(dev_priv, pipe);
|
|
|
|
if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
|
|
intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
|
|
}
|
|
|
|
if (blc_event || (iir & I915_ASLE_INTERRUPT))
|
|
intel_opregion_asle_intr(dev_priv);
|
|
}
|
|
|
|
static void i965_pipestat_irq_handler(struct drm_i915_private *dev_priv,
|
|
u32 iir, u32 pipe_stats[I915_MAX_PIPES])
|
|
{
|
|
bool blc_event = false;
|
|
enum pipe pipe;
|
|
|
|
for_each_pipe(dev_priv, pipe) {
|
|
if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS)
|
|
drm_handle_vblank(&dev_priv->drm, pipe);
|
|
|
|
if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
|
|
blc_event = true;
|
|
|
|
if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
|
|
i9xx_pipe_crc_irq_handler(dev_priv, pipe);
|
|
|
|
if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
|
|
intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
|
|
}
|
|
|
|
if (blc_event || (iir & I915_ASLE_INTERRUPT))
|
|
intel_opregion_asle_intr(dev_priv);
|
|
|
|
if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS)
|
|
gmbus_irq_handler(dev_priv);
|
|
}
|
|
|
|
static void valleyview_pipestat_irq_handler(struct drm_i915_private *dev_priv,
|
|
u32 pipe_stats[I915_MAX_PIPES])
|
|
{
|
|
enum pipe pipe;
|
|
|
|
for_each_pipe(dev_priv, pipe) {
|
|
if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS)
|
|
drm_handle_vblank(&dev_priv->drm, pipe);
|
|
|
|
if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS)
|
|
i9xx_pipe_crc_irq_handler(dev_priv, pipe);
|
|
|
|
if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
|
|
intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
|
|
}
|
|
|
|
if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS)
|
|
gmbus_irq_handler(dev_priv);
|
|
}
|
|
|
|
static u32 i9xx_hpd_irq_ack(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT);
|
|
|
|
if (hotplug_status)
|
|
I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status);
|
|
|
|
return hotplug_status;
|
|
}
|
|
|
|
static void i9xx_hpd_irq_handler(struct drm_i915_private *dev_priv,
|
|
u32 hotplug_status)
|
|
{
|
|
u32 pin_mask = 0, long_mask = 0;
|
|
|
|
if (IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
|
|
IS_CHERRYVIEW(dev_priv)) {
|
|
u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_G4X;
|
|
|
|
if (hotplug_trigger) {
|
|
intel_get_hpd_pins(dev_priv, &pin_mask, &long_mask,
|
|
hotplug_trigger, hotplug_trigger,
|
|
hpd_status_g4x,
|
|
i9xx_port_hotplug_long_detect);
|
|
|
|
intel_hpd_irq_handler(dev_priv, pin_mask, long_mask);
|
|
}
|
|
|
|
if (hotplug_status & DP_AUX_CHANNEL_MASK_INT_STATUS_G4X)
|
|
dp_aux_irq_handler(dev_priv);
|
|
} else {
|
|
u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915;
|
|
|
|
if (hotplug_trigger) {
|
|
intel_get_hpd_pins(dev_priv, &pin_mask, &long_mask,
|
|
hotplug_trigger, hotplug_trigger,
|
|
hpd_status_i915,
|
|
i9xx_port_hotplug_long_detect);
|
|
intel_hpd_irq_handler(dev_priv, pin_mask, long_mask);
|
|
}
|
|
}
|
|
}
|
|
|
|
static irqreturn_t valleyview_irq_handler(int irq, void *arg)
|
|
{
|
|
struct drm_device *dev = arg;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
irqreturn_t ret = IRQ_NONE;
|
|
|
|
if (!intel_irqs_enabled(dev_priv))
|
|
return IRQ_NONE;
|
|
|
|
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
do {
|
|
u32 iir, gt_iir, pm_iir;
|
|
u32 pipe_stats[I915_MAX_PIPES] = {};
|
|
u32 hotplug_status = 0;
|
|
u32 ier = 0;
|
|
|
|
gt_iir = I915_READ(GTIIR);
|
|
pm_iir = I915_READ(GEN6_PMIIR);
|
|
iir = I915_READ(VLV_IIR);
|
|
|
|
if (gt_iir == 0 && pm_iir == 0 && iir == 0)
|
|
break;
|
|
|
|
ret = IRQ_HANDLED;
|
|
|
|
/*
|
|
* Theory on interrupt generation, based on empirical evidence:
|
|
*
|
|
* x = ((VLV_IIR & VLV_IER) ||
|
|
* (((GT_IIR & GT_IER) || (GEN6_PMIIR & GEN6_PMIER)) &&
|
|
* (VLV_MASTER_IER & MASTER_INTERRUPT_ENABLE)));
|
|
*
|
|
* A CPU interrupt will only be raised when 'x' has a 0->1 edge.
|
|
* Hence we clear MASTER_INTERRUPT_ENABLE and VLV_IER to
|
|
* guarantee the CPU interrupt will be raised again even if we
|
|
* don't end up clearing all the VLV_IIR, GT_IIR, GEN6_PMIIR
|
|
* bits this time around.
|
|
*/
|
|
I915_WRITE(VLV_MASTER_IER, 0);
|
|
ier = I915_READ(VLV_IER);
|
|
I915_WRITE(VLV_IER, 0);
|
|
|
|
if (gt_iir)
|
|
I915_WRITE(GTIIR, gt_iir);
|
|
if (pm_iir)
|
|
I915_WRITE(GEN6_PMIIR, pm_iir);
|
|
|
|
if (iir & I915_DISPLAY_PORT_INTERRUPT)
|
|
hotplug_status = i9xx_hpd_irq_ack(dev_priv);
|
|
|
|
/* Call regardless, as some status bits might not be
|
|
* signalled in iir */
|
|
i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats);
|
|
|
|
if (iir & (I915_LPE_PIPE_A_INTERRUPT |
|
|
I915_LPE_PIPE_B_INTERRUPT))
|
|
intel_lpe_audio_irq_handler(dev_priv);
|
|
|
|
/*
|
|
* VLV_IIR is single buffered, and reflects the level
|
|
* from PIPESTAT/PORT_HOTPLUG_STAT, hence clear it last.
|
|
*/
|
|
if (iir)
|
|
I915_WRITE(VLV_IIR, iir);
|
|
|
|
I915_WRITE(VLV_IER, ier);
|
|
I915_WRITE(VLV_MASTER_IER, MASTER_INTERRUPT_ENABLE);
|
|
POSTING_READ(VLV_MASTER_IER);
|
|
|
|
if (gt_iir)
|
|
snb_gt_irq_handler(dev_priv, gt_iir);
|
|
if (pm_iir)
|
|
gen6_rps_irq_handler(dev_priv, pm_iir);
|
|
|
|
if (hotplug_status)
|
|
i9xx_hpd_irq_handler(dev_priv, hotplug_status);
|
|
|
|
valleyview_pipestat_irq_handler(dev_priv, pipe_stats);
|
|
} while (0);
|
|
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static irqreturn_t cherryview_irq_handler(int irq, void *arg)
|
|
{
|
|
struct drm_device *dev = arg;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
irqreturn_t ret = IRQ_NONE;
|
|
|
|
if (!intel_irqs_enabled(dev_priv))
|
|
return IRQ_NONE;
|
|
|
|
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
do {
|
|
u32 master_ctl, iir;
|
|
u32 pipe_stats[I915_MAX_PIPES] = {};
|
|
u32 hotplug_status = 0;
|
|
u32 gt_iir[4];
|
|
u32 ier = 0;
|
|
|
|
master_ctl = I915_READ(GEN8_MASTER_IRQ) & ~GEN8_MASTER_IRQ_CONTROL;
|
|
iir = I915_READ(VLV_IIR);
|
|
|
|
if (master_ctl == 0 && iir == 0)
|
|
break;
|
|
|
|
ret = IRQ_HANDLED;
|
|
|
|
/*
|
|
* Theory on interrupt generation, based on empirical evidence:
|
|
*
|
|
* x = ((VLV_IIR & VLV_IER) ||
|
|
* ((GEN8_MASTER_IRQ & ~GEN8_MASTER_IRQ_CONTROL) &&
|
|
* (GEN8_MASTER_IRQ & GEN8_MASTER_IRQ_CONTROL)));
|
|
*
|
|
* A CPU interrupt will only be raised when 'x' has a 0->1 edge.
|
|
* Hence we clear GEN8_MASTER_IRQ_CONTROL and VLV_IER to
|
|
* guarantee the CPU interrupt will be raised again even if we
|
|
* don't end up clearing all the VLV_IIR and GEN8_MASTER_IRQ_CONTROL
|
|
* bits this time around.
|
|
*/
|
|
I915_WRITE(GEN8_MASTER_IRQ, 0);
|
|
ier = I915_READ(VLV_IER);
|
|
I915_WRITE(VLV_IER, 0);
|
|
|
|
gen8_gt_irq_ack(dev_priv, master_ctl, gt_iir);
|
|
|
|
if (iir & I915_DISPLAY_PORT_INTERRUPT)
|
|
hotplug_status = i9xx_hpd_irq_ack(dev_priv);
|
|
|
|
/* Call regardless, as some status bits might not be
|
|
* signalled in iir */
|
|
i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats);
|
|
|
|
if (iir & (I915_LPE_PIPE_A_INTERRUPT |
|
|
I915_LPE_PIPE_B_INTERRUPT |
|
|
I915_LPE_PIPE_C_INTERRUPT))
|
|
intel_lpe_audio_irq_handler(dev_priv);
|
|
|
|
/*
|
|
* VLV_IIR is single buffered, and reflects the level
|
|
* from PIPESTAT/PORT_HOTPLUG_STAT, hence clear it last.
|
|
*/
|
|
if (iir)
|
|
I915_WRITE(VLV_IIR, iir);
|
|
|
|
I915_WRITE(VLV_IER, ier);
|
|
I915_WRITE(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL);
|
|
POSTING_READ(GEN8_MASTER_IRQ);
|
|
|
|
gen8_gt_irq_handler(dev_priv, master_ctl, gt_iir);
|
|
|
|
if (hotplug_status)
|
|
i9xx_hpd_irq_handler(dev_priv, hotplug_status);
|
|
|
|
valleyview_pipestat_irq_handler(dev_priv, pipe_stats);
|
|
} while (0);
|
|
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void ibx_hpd_irq_handler(struct drm_i915_private *dev_priv,
|
|
u32 hotplug_trigger,
|
|
const u32 hpd[HPD_NUM_PINS])
|
|
{
|
|
u32 dig_hotplug_reg, pin_mask = 0, long_mask = 0;
|
|
|
|
/*
|
|
* Somehow the PCH doesn't seem to really ack the interrupt to the CPU
|
|
* unless we touch the hotplug register, even if hotplug_trigger is
|
|
* zero. Not acking leads to "The master control interrupt lied (SDE)!"
|
|
* errors.
|
|
*/
|
|
dig_hotplug_reg = I915_READ(PCH_PORT_HOTPLUG);
|
|
if (!hotplug_trigger) {
|
|
u32 mask = PORTA_HOTPLUG_STATUS_MASK |
|
|
PORTD_HOTPLUG_STATUS_MASK |
|
|
PORTC_HOTPLUG_STATUS_MASK |
|
|
PORTB_HOTPLUG_STATUS_MASK;
|
|
dig_hotplug_reg &= ~mask;
|
|
}
|
|
|
|
I915_WRITE(PCH_PORT_HOTPLUG, dig_hotplug_reg);
|
|
if (!hotplug_trigger)
|
|
return;
|
|
|
|
intel_get_hpd_pins(dev_priv, &pin_mask, &long_mask, hotplug_trigger,
|
|
dig_hotplug_reg, hpd,
|
|
pch_port_hotplug_long_detect);
|
|
|
|
intel_hpd_irq_handler(dev_priv, pin_mask, long_mask);
|
|
}
|
|
|
|
static void ibx_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
|
|
{
|
|
int pipe;
|
|
u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK;
|
|
|
|
ibx_hpd_irq_handler(dev_priv, hotplug_trigger, hpd_ibx);
|
|
|
|
if (pch_iir & SDE_AUDIO_POWER_MASK) {
|
|
int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK) >>
|
|
SDE_AUDIO_POWER_SHIFT);
|
|
DRM_DEBUG_DRIVER("PCH audio power change on port %d\n",
|
|
port_name(port));
|
|
}
|
|
|
|
if (pch_iir & SDE_AUX_MASK)
|
|
dp_aux_irq_handler(dev_priv);
|
|
|
|
if (pch_iir & SDE_GMBUS)
|
|
gmbus_irq_handler(dev_priv);
|
|
|
|
if (pch_iir & SDE_AUDIO_HDCP_MASK)
|
|
DRM_DEBUG_DRIVER("PCH HDCP audio interrupt\n");
|
|
|
|
if (pch_iir & SDE_AUDIO_TRANS_MASK)
|
|
DRM_DEBUG_DRIVER("PCH transcoder audio interrupt\n");
|
|
|
|
if (pch_iir & SDE_POISON)
|
|
DRM_ERROR("PCH poison interrupt\n");
|
|
|
|
if (pch_iir & SDE_FDI_MASK)
|
|
for_each_pipe(dev_priv, pipe)
|
|
DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n",
|
|
pipe_name(pipe),
|
|
I915_READ(FDI_RX_IIR(pipe)));
|
|
|
|
if (pch_iir & (SDE_TRANSB_CRC_DONE | SDE_TRANSA_CRC_DONE))
|
|
DRM_DEBUG_DRIVER("PCH transcoder CRC done interrupt\n");
|
|
|
|
if (pch_iir & (SDE_TRANSB_CRC_ERR | SDE_TRANSA_CRC_ERR))
|
|
DRM_DEBUG_DRIVER("PCH transcoder CRC error interrupt\n");
|
|
|
|
if (pch_iir & SDE_TRANSA_FIFO_UNDER)
|
|
intel_pch_fifo_underrun_irq_handler(dev_priv, PIPE_A);
|
|
|
|
if (pch_iir & SDE_TRANSB_FIFO_UNDER)
|
|
intel_pch_fifo_underrun_irq_handler(dev_priv, PIPE_B);
|
|
}
|
|
|
|
static void ivb_err_int_handler(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 err_int = I915_READ(GEN7_ERR_INT);
|
|
enum pipe pipe;
|
|
|
|
if (err_int & ERR_INT_POISON)
|
|
DRM_ERROR("Poison interrupt\n");
|
|
|
|
for_each_pipe(dev_priv, pipe) {
|
|
if (err_int & ERR_INT_FIFO_UNDERRUN(pipe))
|
|
intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
|
|
|
|
if (err_int & ERR_INT_PIPE_CRC_DONE(pipe)) {
|
|
if (IS_IVYBRIDGE(dev_priv))
|
|
ivb_pipe_crc_irq_handler(dev_priv, pipe);
|
|
else
|
|
hsw_pipe_crc_irq_handler(dev_priv, pipe);
|
|
}
|
|
}
|
|
|
|
I915_WRITE(GEN7_ERR_INT, err_int);
|
|
}
|
|
|
|
static void cpt_serr_int_handler(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 serr_int = I915_READ(SERR_INT);
|
|
enum pipe pipe;
|
|
|
|
if (serr_int & SERR_INT_POISON)
|
|
DRM_ERROR("PCH poison interrupt\n");
|
|
|
|
for_each_pipe(dev_priv, pipe)
|
|
if (serr_int & SERR_INT_TRANS_FIFO_UNDERRUN(pipe))
|
|
intel_pch_fifo_underrun_irq_handler(dev_priv, pipe);
|
|
|
|
I915_WRITE(SERR_INT, serr_int);
|
|
}
|
|
|
|
static void cpt_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
|
|
{
|
|
int pipe;
|
|
u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT;
|
|
|
|
ibx_hpd_irq_handler(dev_priv, hotplug_trigger, hpd_cpt);
|
|
|
|
if (pch_iir & SDE_AUDIO_POWER_MASK_CPT) {
|
|
int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK_CPT) >>
|
|
SDE_AUDIO_POWER_SHIFT_CPT);
|
|
DRM_DEBUG_DRIVER("PCH audio power change on port %c\n",
|
|
port_name(port));
|
|
}
|
|
|
|
if (pch_iir & SDE_AUX_MASK_CPT)
|
|
dp_aux_irq_handler(dev_priv);
|
|
|
|
if (pch_iir & SDE_GMBUS_CPT)
|
|
gmbus_irq_handler(dev_priv);
|
|
|
|
if (pch_iir & SDE_AUDIO_CP_REQ_CPT)
|
|
DRM_DEBUG_DRIVER("Audio CP request interrupt\n");
|
|
|
|
if (pch_iir & SDE_AUDIO_CP_CHG_CPT)
|
|
DRM_DEBUG_DRIVER("Audio CP change interrupt\n");
|
|
|
|
if (pch_iir & SDE_FDI_MASK_CPT)
|
|
for_each_pipe(dev_priv, pipe)
|
|
DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n",
|
|
pipe_name(pipe),
|
|
I915_READ(FDI_RX_IIR(pipe)));
|
|
|
|
if (pch_iir & SDE_ERROR_CPT)
|
|
cpt_serr_int_handler(dev_priv);
|
|
}
|
|
|
|
static void spt_irq_handler(struct drm_i915_private *dev_priv, u32 pch_iir)
|
|
{
|
|
u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_SPT &
|
|
~SDE_PORTE_HOTPLUG_SPT;
|
|
u32 hotplug2_trigger = pch_iir & SDE_PORTE_HOTPLUG_SPT;
|
|
u32 pin_mask = 0, long_mask = 0;
|
|
|
|
if (hotplug_trigger) {
|
|
u32 dig_hotplug_reg;
|
|
|
|
dig_hotplug_reg = I915_READ(PCH_PORT_HOTPLUG);
|
|
I915_WRITE(PCH_PORT_HOTPLUG, dig_hotplug_reg);
|
|
|
|
intel_get_hpd_pins(dev_priv, &pin_mask, &long_mask,
|
|
hotplug_trigger, dig_hotplug_reg, hpd_spt,
|
|
spt_port_hotplug_long_detect);
|
|
}
|
|
|
|
if (hotplug2_trigger) {
|
|
u32 dig_hotplug_reg;
|
|
|
|
dig_hotplug_reg = I915_READ(PCH_PORT_HOTPLUG2);
|
|
I915_WRITE(PCH_PORT_HOTPLUG2, dig_hotplug_reg);
|
|
|
|
intel_get_hpd_pins(dev_priv, &pin_mask, &long_mask,
|
|
hotplug2_trigger, dig_hotplug_reg, hpd_spt,
|
|
spt_port_hotplug2_long_detect);
|
|
}
|
|
|
|
if (pin_mask)
|
|
intel_hpd_irq_handler(dev_priv, pin_mask, long_mask);
|
|
|
|
if (pch_iir & SDE_GMBUS_CPT)
|
|
gmbus_irq_handler(dev_priv);
|
|
}
|
|
|
|
static void ilk_hpd_irq_handler(struct drm_i915_private *dev_priv,
|
|
u32 hotplug_trigger,
|
|
const u32 hpd[HPD_NUM_PINS])
|
|
{
|
|
u32 dig_hotplug_reg, pin_mask = 0, long_mask = 0;
|
|
|
|
dig_hotplug_reg = I915_READ(DIGITAL_PORT_HOTPLUG_CNTRL);
|
|
I915_WRITE(DIGITAL_PORT_HOTPLUG_CNTRL, dig_hotplug_reg);
|
|
|
|
intel_get_hpd_pins(dev_priv, &pin_mask, &long_mask, hotplug_trigger,
|
|
dig_hotplug_reg, hpd,
|
|
ilk_port_hotplug_long_detect);
|
|
|
|
intel_hpd_irq_handler(dev_priv, pin_mask, long_mask);
|
|
}
|
|
|
|
static void ilk_display_irq_handler(struct drm_i915_private *dev_priv,
|
|
u32 de_iir)
|
|
{
|
|
enum pipe pipe;
|
|
u32 hotplug_trigger = de_iir & DE_DP_A_HOTPLUG;
|
|
|
|
if (hotplug_trigger)
|
|
ilk_hpd_irq_handler(dev_priv, hotplug_trigger, hpd_ilk);
|
|
|
|
if (de_iir & DE_AUX_CHANNEL_A)
|
|
dp_aux_irq_handler(dev_priv);
|
|
|
|
if (de_iir & DE_GSE)
|
|
intel_opregion_asle_intr(dev_priv);
|
|
|
|
if (de_iir & DE_POISON)
|
|
DRM_ERROR("Poison interrupt\n");
|
|
|
|
for_each_pipe(dev_priv, pipe) {
|
|
if (de_iir & DE_PIPE_VBLANK(pipe))
|
|
drm_handle_vblank(&dev_priv->drm, pipe);
|
|
|
|
if (de_iir & DE_PIPE_FIFO_UNDERRUN(pipe))
|
|
intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
|
|
|
|
if (de_iir & DE_PIPE_CRC_DONE(pipe))
|
|
i9xx_pipe_crc_irq_handler(dev_priv, pipe);
|
|
}
|
|
|
|
/* check event from PCH */
|
|
if (de_iir & DE_PCH_EVENT) {
|
|
u32 pch_iir = I915_READ(SDEIIR);
|
|
|
|
if (HAS_PCH_CPT(dev_priv))
|
|
cpt_irq_handler(dev_priv, pch_iir);
|
|
else
|
|
ibx_irq_handler(dev_priv, pch_iir);
|
|
|
|
/* should clear PCH hotplug event before clear CPU irq */
|
|
I915_WRITE(SDEIIR, pch_iir);
|
|
}
|
|
|
|
if (IS_GEN5(dev_priv) && de_iir & DE_PCU_EVENT)
|
|
ironlake_rps_change_irq_handler(dev_priv);
|
|
}
|
|
|
|
static void ivb_display_irq_handler(struct drm_i915_private *dev_priv,
|
|
u32 de_iir)
|
|
{
|
|
enum pipe pipe;
|
|
u32 hotplug_trigger = de_iir & DE_DP_A_HOTPLUG_IVB;
|
|
|
|
if (hotplug_trigger)
|
|
ilk_hpd_irq_handler(dev_priv, hotplug_trigger, hpd_ivb);
|
|
|
|
if (de_iir & DE_ERR_INT_IVB)
|
|
ivb_err_int_handler(dev_priv);
|
|
|
|
if (de_iir & DE_EDP_PSR_INT_HSW) {
|
|
u32 psr_iir = I915_READ(EDP_PSR_IIR);
|
|
|
|
intel_psr_irq_handler(dev_priv, psr_iir);
|
|
I915_WRITE(EDP_PSR_IIR, psr_iir);
|
|
}
|
|
|
|
if (de_iir & DE_AUX_CHANNEL_A_IVB)
|
|
dp_aux_irq_handler(dev_priv);
|
|
|
|
if (de_iir & DE_GSE_IVB)
|
|
intel_opregion_asle_intr(dev_priv);
|
|
|
|
for_each_pipe(dev_priv, pipe) {
|
|
if (de_iir & (DE_PIPE_VBLANK_IVB(pipe)))
|
|
drm_handle_vblank(&dev_priv->drm, pipe);
|
|
}
|
|
|
|
/* check event from PCH */
|
|
if (!HAS_PCH_NOP(dev_priv) && (de_iir & DE_PCH_EVENT_IVB)) {
|
|
u32 pch_iir = I915_READ(SDEIIR);
|
|
|
|
cpt_irq_handler(dev_priv, pch_iir);
|
|
|
|
/* clear PCH hotplug event before clear CPU irq */
|
|
I915_WRITE(SDEIIR, pch_iir);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* To handle irqs with the minimum potential races with fresh interrupts, we:
|
|
* 1 - Disable Master Interrupt Control.
|
|
* 2 - Find the source(s) of the interrupt.
|
|
* 3 - Clear the Interrupt Identity bits (IIR).
|
|
* 4 - Process the interrupt(s) that had bits set in the IIRs.
|
|
* 5 - Re-enable Master Interrupt Control.
|
|
*/
|
|
static irqreturn_t ironlake_irq_handler(int irq, void *arg)
|
|
{
|
|
struct drm_device *dev = arg;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
u32 de_iir, gt_iir, de_ier, sde_ier = 0;
|
|
irqreturn_t ret = IRQ_NONE;
|
|
|
|
if (!intel_irqs_enabled(dev_priv))
|
|
return IRQ_NONE;
|
|
|
|
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
/* disable master interrupt before clearing iir */
|
|
de_ier = I915_READ(DEIER);
|
|
I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL);
|
|
POSTING_READ(DEIER);
|
|
|
|
/* Disable south interrupts. We'll only write to SDEIIR once, so further
|
|
* interrupts will will be stored on its back queue, and then we'll be
|
|
* able to process them after we restore SDEIER (as soon as we restore
|
|
* it, we'll get an interrupt if SDEIIR still has something to process
|
|
* due to its back queue). */
|
|
if (!HAS_PCH_NOP(dev_priv)) {
|
|
sde_ier = I915_READ(SDEIER);
|
|
I915_WRITE(SDEIER, 0);
|
|
POSTING_READ(SDEIER);
|
|
}
|
|
|
|
/* Find, clear, then process each source of interrupt */
|
|
|
|
gt_iir = I915_READ(GTIIR);
|
|
if (gt_iir) {
|
|
I915_WRITE(GTIIR, gt_iir);
|
|
ret = IRQ_HANDLED;
|
|
if (INTEL_GEN(dev_priv) >= 6)
|
|
snb_gt_irq_handler(dev_priv, gt_iir);
|
|
else
|
|
ilk_gt_irq_handler(dev_priv, gt_iir);
|
|
}
|
|
|
|
de_iir = I915_READ(DEIIR);
|
|
if (de_iir) {
|
|
I915_WRITE(DEIIR, de_iir);
|
|
ret = IRQ_HANDLED;
|
|
if (INTEL_GEN(dev_priv) >= 7)
|
|
ivb_display_irq_handler(dev_priv, de_iir);
|
|
else
|
|
ilk_display_irq_handler(dev_priv, de_iir);
|
|
}
|
|
|
|
if (INTEL_GEN(dev_priv) >= 6) {
|
|
u32 pm_iir = I915_READ(GEN6_PMIIR);
|
|
if (pm_iir) {
|
|
I915_WRITE(GEN6_PMIIR, pm_iir);
|
|
ret = IRQ_HANDLED;
|
|
gen6_rps_irq_handler(dev_priv, pm_iir);
|
|
}
|
|
}
|
|
|
|
I915_WRITE(DEIER, de_ier);
|
|
POSTING_READ(DEIER);
|
|
if (!HAS_PCH_NOP(dev_priv)) {
|
|
I915_WRITE(SDEIER, sde_ier);
|
|
POSTING_READ(SDEIER);
|
|
}
|
|
|
|
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void bxt_hpd_irq_handler(struct drm_i915_private *dev_priv,
|
|
u32 hotplug_trigger,
|
|
const u32 hpd[HPD_NUM_PINS])
|
|
{
|
|
u32 dig_hotplug_reg, pin_mask = 0, long_mask = 0;
|
|
|
|
dig_hotplug_reg = I915_READ(PCH_PORT_HOTPLUG);
|
|
I915_WRITE(PCH_PORT_HOTPLUG, dig_hotplug_reg);
|
|
|
|
intel_get_hpd_pins(dev_priv, &pin_mask, &long_mask, hotplug_trigger,
|
|
dig_hotplug_reg, hpd,
|
|
bxt_port_hotplug_long_detect);
|
|
|
|
intel_hpd_irq_handler(dev_priv, pin_mask, long_mask);
|
|
}
|
|
|
|
static irqreturn_t
|
|
gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
|
|
{
|
|
irqreturn_t ret = IRQ_NONE;
|
|
u32 iir;
|
|
enum pipe pipe;
|
|
|
|
if (master_ctl & GEN8_DE_MISC_IRQ) {
|
|
iir = I915_READ(GEN8_DE_MISC_IIR);
|
|
if (iir) {
|
|
bool found = false;
|
|
|
|
I915_WRITE(GEN8_DE_MISC_IIR, iir);
|
|
ret = IRQ_HANDLED;
|
|
|
|
if (iir & GEN8_DE_MISC_GSE) {
|
|
intel_opregion_asle_intr(dev_priv);
|
|
found = true;
|
|
}
|
|
|
|
if (iir & GEN8_DE_EDP_PSR) {
|
|
u32 psr_iir = I915_READ(EDP_PSR_IIR);
|
|
|
|
intel_psr_irq_handler(dev_priv, psr_iir);
|
|
I915_WRITE(EDP_PSR_IIR, psr_iir);
|
|
found = true;
|
|
}
|
|
|
|
if (!found)
|
|
DRM_ERROR("Unexpected DE Misc interrupt\n");
|
|
}
|
|
else
|
|
DRM_ERROR("The master control interrupt lied (DE MISC)!\n");
|
|
}
|
|
|
|
if (master_ctl & GEN8_DE_PORT_IRQ) {
|
|
iir = I915_READ(GEN8_DE_PORT_IIR);
|
|
if (iir) {
|
|
u32 tmp_mask;
|
|
bool found = false;
|
|
|
|
I915_WRITE(GEN8_DE_PORT_IIR, iir);
|
|
ret = IRQ_HANDLED;
|
|
|
|
tmp_mask = GEN8_AUX_CHANNEL_A;
|
|
if (INTEL_GEN(dev_priv) >= 9)
|
|
tmp_mask |= GEN9_AUX_CHANNEL_B |
|
|
GEN9_AUX_CHANNEL_C |
|
|
GEN9_AUX_CHANNEL_D;
|
|
|
|
if (IS_CNL_WITH_PORT_F(dev_priv))
|
|
tmp_mask |= CNL_AUX_CHANNEL_F;
|
|
|
|
if (iir & tmp_mask) {
|
|
dp_aux_irq_handler(dev_priv);
|
|
found = true;
|
|
}
|
|
|
|
if (IS_GEN9_LP(dev_priv)) {
|
|
tmp_mask = iir & BXT_DE_PORT_HOTPLUG_MASK;
|
|
if (tmp_mask) {
|
|
bxt_hpd_irq_handler(dev_priv, tmp_mask,
|
|
hpd_bxt);
|
|
found = true;
|
|
}
|
|
} else if (IS_BROADWELL(dev_priv)) {
|
|
tmp_mask = iir & GEN8_PORT_DP_A_HOTPLUG;
|
|
if (tmp_mask) {
|
|
ilk_hpd_irq_handler(dev_priv,
|
|
tmp_mask, hpd_bdw);
|
|
found = true;
|
|
}
|
|
}
|
|
|
|
if (IS_GEN9_LP(dev_priv) && (iir & BXT_DE_PORT_GMBUS)) {
|
|
gmbus_irq_handler(dev_priv);
|
|
found = true;
|
|
}
|
|
|
|
if (!found)
|
|
DRM_ERROR("Unexpected DE Port interrupt\n");
|
|
}
|
|
else
|
|
DRM_ERROR("The master control interrupt lied (DE PORT)!\n");
|
|
}
|
|
|
|
for_each_pipe(dev_priv, pipe) {
|
|
u32 fault_errors;
|
|
|
|
if (!(master_ctl & GEN8_DE_PIPE_IRQ(pipe)))
|
|
continue;
|
|
|
|
iir = I915_READ(GEN8_DE_PIPE_IIR(pipe));
|
|
if (!iir) {
|
|
DRM_ERROR("The master control interrupt lied (DE PIPE)!\n");
|
|
continue;
|
|
}
|
|
|
|
ret = IRQ_HANDLED;
|
|
I915_WRITE(GEN8_DE_PIPE_IIR(pipe), iir);
|
|
|
|
if (iir & GEN8_PIPE_VBLANK)
|
|
drm_handle_vblank(&dev_priv->drm, pipe);
|
|
|
|
if (iir & GEN8_PIPE_CDCLK_CRC_DONE)
|
|
hsw_pipe_crc_irq_handler(dev_priv, pipe);
|
|
|
|
if (iir & GEN8_PIPE_FIFO_UNDERRUN)
|
|
intel_cpu_fifo_underrun_irq_handler(dev_priv, pipe);
|
|
|
|
fault_errors = iir;
|
|
if (INTEL_GEN(dev_priv) >= 9)
|
|
fault_errors &= GEN9_DE_PIPE_IRQ_FAULT_ERRORS;
|
|
else
|
|
fault_errors &= GEN8_DE_PIPE_IRQ_FAULT_ERRORS;
|
|
|
|
if (fault_errors)
|
|
DRM_ERROR("Fault errors on pipe %c: 0x%08x\n",
|
|
pipe_name(pipe),
|
|
fault_errors);
|
|
}
|
|
|
|
if (HAS_PCH_SPLIT(dev_priv) && !HAS_PCH_NOP(dev_priv) &&
|
|
master_ctl & GEN8_DE_PCH_IRQ) {
|
|
/*
|
|
* FIXME(BDW): Assume for now that the new interrupt handling
|
|
* scheme also closed the SDE interrupt handling race we've seen
|
|
* on older pch-split platforms. But this needs testing.
|
|
*/
|
|
iir = I915_READ(SDEIIR);
|
|
if (iir) {
|
|
I915_WRITE(SDEIIR, iir);
|
|
ret = IRQ_HANDLED;
|
|
|
|
if (HAS_PCH_SPT(dev_priv) || HAS_PCH_KBP(dev_priv) ||
|
|
HAS_PCH_CNP(dev_priv))
|
|
spt_irq_handler(dev_priv, iir);
|
|
else
|
|
cpt_irq_handler(dev_priv, iir);
|
|
} else {
|
|
/*
|
|
* Like on previous PCH there seems to be something
|
|
* fishy going on with forwarding PCH interrupts.
|
|
*/
|
|
DRM_DEBUG_DRIVER("The master control interrupt lied (SDE)!\n");
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static irqreturn_t gen8_irq_handler(int irq, void *arg)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(arg);
|
|
u32 master_ctl;
|
|
u32 gt_iir[4];
|
|
|
|
if (!intel_irqs_enabled(dev_priv))
|
|
return IRQ_NONE;
|
|
|
|
master_ctl = I915_READ_FW(GEN8_MASTER_IRQ);
|
|
master_ctl &= ~GEN8_MASTER_IRQ_CONTROL;
|
|
if (!master_ctl)
|
|
return IRQ_NONE;
|
|
|
|
I915_WRITE_FW(GEN8_MASTER_IRQ, 0);
|
|
|
|
/* Find, clear, then process each source of interrupt */
|
|
gen8_gt_irq_ack(dev_priv, master_ctl, gt_iir);
|
|
|
|
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
|
|
if (master_ctl & ~GEN8_GT_IRQS) {
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
gen8_de_irq_handler(dev_priv, master_ctl);
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
}
|
|
|
|
I915_WRITE_FW(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL);
|
|
|
|
gen8_gt_irq_handler(dev_priv, master_ctl, gt_iir);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
struct wedge_me {
|
|
struct delayed_work work;
|
|
struct drm_i915_private *i915;
|
|
const char *name;
|
|
};
|
|
|
|
static void wedge_me(struct work_struct *work)
|
|
{
|
|
struct wedge_me *w = container_of(work, typeof(*w), work.work);
|
|
|
|
dev_err(w->i915->drm.dev,
|
|
"%s timed out, cancelling all in-flight rendering.\n",
|
|
w->name);
|
|
i915_gem_set_wedged(w->i915);
|
|
}
|
|
|
|
static void __init_wedge(struct wedge_me *w,
|
|
struct drm_i915_private *i915,
|
|
long timeout,
|
|
const char *name)
|
|
{
|
|
w->i915 = i915;
|
|
w->name = name;
|
|
|
|
INIT_DELAYED_WORK_ONSTACK(&w->work, wedge_me);
|
|
schedule_delayed_work(&w->work, timeout);
|
|
}
|
|
|
|
static void __fini_wedge(struct wedge_me *w)
|
|
{
|
|
cancel_delayed_work_sync(&w->work);
|
|
destroy_delayed_work_on_stack(&w->work);
|
|
w->i915 = NULL;
|
|
}
|
|
|
|
#define i915_wedge_on_timeout(W, DEV, TIMEOUT) \
|
|
for (__init_wedge((W), (DEV), (TIMEOUT), __func__); \
|
|
(W)->i915; \
|
|
__fini_wedge((W)))
|
|
|
|
static u32
|
|
gen11_gt_engine_identity(struct drm_i915_private * const i915,
|
|
const unsigned int bank, const unsigned int bit)
|
|
{
|
|
void __iomem * const regs = i915->regs;
|
|
u32 timeout_ts;
|
|
u32 ident;
|
|
|
|
lockdep_assert_held(&i915->irq_lock);
|
|
|
|
raw_reg_write(regs, GEN11_IIR_REG_SELECTOR(bank), BIT(bit));
|
|
|
|
/*
|
|
* NB: Specs do not specify how long to spin wait,
|
|
* so we do ~100us as an educated guess.
|
|
*/
|
|
timeout_ts = (local_clock() >> 10) + 100;
|
|
do {
|
|
ident = raw_reg_read(regs, GEN11_INTR_IDENTITY_REG(bank));
|
|
} while (!(ident & GEN11_INTR_DATA_VALID) &&
|
|
!time_after32(local_clock() >> 10, timeout_ts));
|
|
|
|
if (unlikely(!(ident & GEN11_INTR_DATA_VALID))) {
|
|
DRM_ERROR("INTR_IDENTITY_REG%u:%u 0x%08x not valid!\n",
|
|
bank, bit, ident);
|
|
return 0;
|
|
}
|
|
|
|
raw_reg_write(regs, GEN11_INTR_IDENTITY_REG(bank),
|
|
GEN11_INTR_DATA_VALID);
|
|
|
|
return ident;
|
|
}
|
|
|
|
static void
|
|
gen11_other_irq_handler(struct drm_i915_private * const i915,
|
|
const u8 instance, const u16 iir)
|
|
{
|
|
if (instance == OTHER_GTPM_INSTANCE)
|
|
return gen6_rps_irq_handler(i915, iir);
|
|
|
|
WARN_ONCE(1, "unhandled other interrupt instance=0x%x, iir=0x%x\n",
|
|
instance, iir);
|
|
}
|
|
|
|
static void
|
|
gen11_engine_irq_handler(struct drm_i915_private * const i915,
|
|
const u8 class, const u8 instance, const u16 iir)
|
|
{
|
|
struct intel_engine_cs *engine;
|
|
|
|
if (instance <= MAX_ENGINE_INSTANCE)
|
|
engine = i915->engine_class[class][instance];
|
|
else
|
|
engine = NULL;
|
|
|
|
if (likely(engine))
|
|
return gen8_cs_irq_handler(engine, iir);
|
|
|
|
WARN_ONCE(1, "unhandled engine interrupt class=0x%x, instance=0x%x\n",
|
|
class, instance);
|
|
}
|
|
|
|
static void
|
|
gen11_gt_identity_handler(struct drm_i915_private * const i915,
|
|
const u32 identity)
|
|
{
|
|
const u8 class = GEN11_INTR_ENGINE_CLASS(identity);
|
|
const u8 instance = GEN11_INTR_ENGINE_INSTANCE(identity);
|
|
const u16 intr = GEN11_INTR_ENGINE_INTR(identity);
|
|
|
|
if (unlikely(!intr))
|
|
return;
|
|
|
|
if (class <= COPY_ENGINE_CLASS)
|
|
return gen11_engine_irq_handler(i915, class, instance, intr);
|
|
|
|
if (class == OTHER_CLASS)
|
|
return gen11_other_irq_handler(i915, instance, intr);
|
|
|
|
WARN_ONCE(1, "unknown interrupt class=0x%x, instance=0x%x, intr=0x%x\n",
|
|
class, instance, intr);
|
|
}
|
|
|
|
static void
|
|
gen11_gt_bank_handler(struct drm_i915_private * const i915,
|
|
const unsigned int bank)
|
|
{
|
|
void __iomem * const regs = i915->regs;
|
|
unsigned long intr_dw;
|
|
unsigned int bit;
|
|
|
|
lockdep_assert_held(&i915->irq_lock);
|
|
|
|
intr_dw = raw_reg_read(regs, GEN11_GT_INTR_DW(bank));
|
|
|
|
if (unlikely(!intr_dw)) {
|
|
DRM_ERROR("GT_INTR_DW%u blank!\n", bank);
|
|
return;
|
|
}
|
|
|
|
for_each_set_bit(bit, &intr_dw, 32) {
|
|
const u32 ident = gen11_gt_engine_identity(i915,
|
|
bank, bit);
|
|
|
|
gen11_gt_identity_handler(i915, ident);
|
|
}
|
|
|
|
/* Clear must be after shared has been served for engine */
|
|
raw_reg_write(regs, GEN11_GT_INTR_DW(bank), intr_dw);
|
|
}
|
|
|
|
static void
|
|
gen11_gt_irq_handler(struct drm_i915_private * const i915,
|
|
const u32 master_ctl)
|
|
{
|
|
unsigned int bank;
|
|
|
|
spin_lock(&i915->irq_lock);
|
|
|
|
for (bank = 0; bank < 2; bank++) {
|
|
if (master_ctl & GEN11_GT_DW_IRQ(bank))
|
|
gen11_gt_bank_handler(i915, bank);
|
|
}
|
|
|
|
spin_unlock(&i915->irq_lock);
|
|
}
|
|
|
|
static irqreturn_t gen11_irq_handler(int irq, void *arg)
|
|
{
|
|
struct drm_i915_private * const i915 = to_i915(arg);
|
|
void __iomem * const regs = i915->regs;
|
|
u32 master_ctl;
|
|
|
|
if (!intel_irqs_enabled(i915))
|
|
return IRQ_NONE;
|
|
|
|
master_ctl = raw_reg_read(regs, GEN11_GFX_MSTR_IRQ);
|
|
master_ctl &= ~GEN11_MASTER_IRQ;
|
|
if (!master_ctl)
|
|
return IRQ_NONE;
|
|
|
|
/* Disable interrupts. */
|
|
raw_reg_write(regs, GEN11_GFX_MSTR_IRQ, 0);
|
|
|
|
/* Find, clear, then process each source of interrupt. */
|
|
gen11_gt_irq_handler(i915, master_ctl);
|
|
|
|
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
|
|
if (master_ctl & GEN11_DISPLAY_IRQ) {
|
|
const u32 disp_ctl = raw_reg_read(regs, GEN11_DISPLAY_INT_CTL);
|
|
|
|
disable_rpm_wakeref_asserts(i915);
|
|
/*
|
|
* GEN11_DISPLAY_INT_CTL has same format as GEN8_MASTER_IRQ
|
|
* for the display related bits.
|
|
*/
|
|
gen8_de_irq_handler(i915, disp_ctl);
|
|
enable_rpm_wakeref_asserts(i915);
|
|
}
|
|
|
|
/* Acknowledge and enable interrupts. */
|
|
raw_reg_write(regs, GEN11_GFX_MSTR_IRQ, GEN11_MASTER_IRQ | master_ctl);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void i915_reset_device(struct drm_i915_private *dev_priv,
|
|
u32 engine_mask,
|
|
const char *reason)
|
|
{
|
|
struct i915_gpu_error *error = &dev_priv->gpu_error;
|
|
struct kobject *kobj = &dev_priv->drm.primary->kdev->kobj;
|
|
char *error_event[] = { I915_ERROR_UEVENT "=1", NULL };
|
|
char *reset_event[] = { I915_RESET_UEVENT "=1", NULL };
|
|
char *reset_done_event[] = { I915_ERROR_UEVENT "=0", NULL };
|
|
struct wedge_me w;
|
|
|
|
kobject_uevent_env(kobj, KOBJ_CHANGE, error_event);
|
|
|
|
DRM_DEBUG_DRIVER("resetting chip\n");
|
|
kobject_uevent_env(kobj, KOBJ_CHANGE, reset_event);
|
|
|
|
/* Use a watchdog to ensure that our reset completes */
|
|
i915_wedge_on_timeout(&w, dev_priv, 5*HZ) {
|
|
intel_prepare_reset(dev_priv);
|
|
|
|
error->reason = reason;
|
|
error->stalled_mask = engine_mask;
|
|
|
|
/* Signal that locked waiters should reset the GPU */
|
|
smp_mb__before_atomic();
|
|
set_bit(I915_RESET_HANDOFF, &error->flags);
|
|
wake_up_all(&error->wait_queue);
|
|
|
|
/* Wait for anyone holding the lock to wakeup, without
|
|
* blocking indefinitely on struct_mutex.
|
|
*/
|
|
do {
|
|
if (mutex_trylock(&dev_priv->drm.struct_mutex)) {
|
|
i915_reset(dev_priv, engine_mask, reason);
|
|
mutex_unlock(&dev_priv->drm.struct_mutex);
|
|
}
|
|
} while (wait_on_bit_timeout(&error->flags,
|
|
I915_RESET_HANDOFF,
|
|
TASK_UNINTERRUPTIBLE,
|
|
1));
|
|
|
|
error->stalled_mask = 0;
|
|
error->reason = NULL;
|
|
|
|
intel_finish_reset(dev_priv);
|
|
}
|
|
|
|
if (!test_bit(I915_WEDGED, &error->flags))
|
|
kobject_uevent_env(kobj, KOBJ_CHANGE, reset_done_event);
|
|
}
|
|
|
|
static void i915_clear_error_registers(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 eir;
|
|
|
|
if (!IS_GEN2(dev_priv))
|
|
I915_WRITE(PGTBL_ER, I915_READ(PGTBL_ER));
|
|
|
|
if (INTEL_GEN(dev_priv) < 4)
|
|
I915_WRITE(IPEIR, I915_READ(IPEIR));
|
|
else
|
|
I915_WRITE(IPEIR_I965, I915_READ(IPEIR_I965));
|
|
|
|
I915_WRITE(EIR, I915_READ(EIR));
|
|
eir = I915_READ(EIR);
|
|
if (eir) {
|
|
/*
|
|
* some errors might have become stuck,
|
|
* mask them.
|
|
*/
|
|
DRM_DEBUG_DRIVER("EIR stuck: 0x%08x, masking\n", eir);
|
|
I915_WRITE(EMR, I915_READ(EMR) | eir);
|
|
I915_WRITE(IIR, I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* i915_handle_error - handle a gpu error
|
|
* @dev_priv: i915 device private
|
|
* @engine_mask: mask representing engines that are hung
|
|
* @flags: control flags
|
|
* @fmt: Error message format string
|
|
*
|
|
* Do some basic checking of register state at error time and
|
|
* dump it to the syslog. Also call i915_capture_error_state() to make
|
|
* sure we get a record and make it available in debugfs. Fire a uevent
|
|
* so userspace knows something bad happened (should trigger collection
|
|
* of a ring dump etc.).
|
|
*/
|
|
void i915_handle_error(struct drm_i915_private *dev_priv,
|
|
u32 engine_mask,
|
|
unsigned long flags,
|
|
const char *fmt, ...)
|
|
{
|
|
struct intel_engine_cs *engine;
|
|
unsigned int tmp;
|
|
char error_msg[80];
|
|
char *msg = NULL;
|
|
|
|
if (fmt) {
|
|
va_list args;
|
|
|
|
va_start(args, fmt);
|
|
vscnprintf(error_msg, sizeof(error_msg), fmt, args);
|
|
va_end(args);
|
|
|
|
msg = error_msg;
|
|
}
|
|
|
|
/*
|
|
* In most cases it's guaranteed that we get here with an RPM
|
|
* reference held, for example because there is a pending GPU
|
|
* request that won't finish until the reset is done. This
|
|
* isn't the case at least when we get here by doing a
|
|
* simulated reset via debugfs, so get an RPM reference.
|
|
*/
|
|
intel_runtime_pm_get(dev_priv);
|
|
|
|
engine_mask &= INTEL_INFO(dev_priv)->ring_mask;
|
|
|
|
if (flags & I915_ERROR_CAPTURE) {
|
|
i915_capture_error_state(dev_priv, engine_mask, msg);
|
|
i915_clear_error_registers(dev_priv);
|
|
}
|
|
|
|
/*
|
|
* Try engine reset when available. We fall back to full reset if
|
|
* single reset fails.
|
|
*/
|
|
if (intel_has_reset_engine(dev_priv)) {
|
|
for_each_engine_masked(engine, dev_priv, engine_mask, tmp) {
|
|
BUILD_BUG_ON(I915_RESET_MODESET >= I915_RESET_ENGINE);
|
|
if (test_and_set_bit(I915_RESET_ENGINE + engine->id,
|
|
&dev_priv->gpu_error.flags))
|
|
continue;
|
|
|
|
if (i915_reset_engine(engine, msg) == 0)
|
|
engine_mask &= ~intel_engine_flag(engine);
|
|
|
|
clear_bit(I915_RESET_ENGINE + engine->id,
|
|
&dev_priv->gpu_error.flags);
|
|
wake_up_bit(&dev_priv->gpu_error.flags,
|
|
I915_RESET_ENGINE + engine->id);
|
|
}
|
|
}
|
|
|
|
if (!engine_mask)
|
|
goto out;
|
|
|
|
/* Full reset needs the mutex, stop any other user trying to do so. */
|
|
if (test_and_set_bit(I915_RESET_BACKOFF, &dev_priv->gpu_error.flags)) {
|
|
wait_event(dev_priv->gpu_error.reset_queue,
|
|
!test_bit(I915_RESET_BACKOFF,
|
|
&dev_priv->gpu_error.flags));
|
|
goto out;
|
|
}
|
|
|
|
/* Prevent any other reset-engine attempt. */
|
|
for_each_engine(engine, dev_priv, tmp) {
|
|
while (test_and_set_bit(I915_RESET_ENGINE + engine->id,
|
|
&dev_priv->gpu_error.flags))
|
|
wait_on_bit(&dev_priv->gpu_error.flags,
|
|
I915_RESET_ENGINE + engine->id,
|
|
TASK_UNINTERRUPTIBLE);
|
|
}
|
|
|
|
i915_reset_device(dev_priv, engine_mask, msg);
|
|
|
|
for_each_engine(engine, dev_priv, tmp) {
|
|
clear_bit(I915_RESET_ENGINE + engine->id,
|
|
&dev_priv->gpu_error.flags);
|
|
}
|
|
|
|
clear_bit(I915_RESET_BACKOFF, &dev_priv->gpu_error.flags);
|
|
wake_up_all(&dev_priv->gpu_error.reset_queue);
|
|
|
|
out:
|
|
intel_runtime_pm_put(dev_priv);
|
|
}
|
|
|
|
/* Called from drm generic code, passed 'crtc' which
|
|
* we use as a pipe index
|
|
*/
|
|
static int i8xx_enable_vblank(struct drm_device *dev, unsigned int pipe)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
unsigned long irqflags;
|
|
|
|
spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
|
|
i915_enable_pipestat(dev_priv, pipe, PIPE_VBLANK_INTERRUPT_STATUS);
|
|
spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int i965_enable_vblank(struct drm_device *dev, unsigned int pipe)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
unsigned long irqflags;
|
|
|
|
spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
|
|
i915_enable_pipestat(dev_priv, pipe,
|
|
PIPE_START_VBLANK_INTERRUPT_STATUS);
|
|
spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ironlake_enable_vblank(struct drm_device *dev, unsigned int pipe)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
unsigned long irqflags;
|
|
uint32_t bit = INTEL_GEN(dev_priv) >= 7 ?
|
|
DE_PIPE_VBLANK_IVB(pipe) : DE_PIPE_VBLANK(pipe);
|
|
|
|
spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
|
|
ilk_enable_display_irq(dev_priv, bit);
|
|
spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
|
|
|
|
/* Even though there is no DMC, frame counter can get stuck when
|
|
* PSR is active as no frames are generated.
|
|
*/
|
|
if (HAS_PSR(dev_priv))
|
|
drm_vblank_restore(dev, pipe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int gen8_enable_vblank(struct drm_device *dev, unsigned int pipe)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
unsigned long irqflags;
|
|
|
|
spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
|
|
bdw_enable_pipe_irq(dev_priv, pipe, GEN8_PIPE_VBLANK);
|
|
spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
|
|
|
|
/* Even if there is no DMC, frame counter can get stuck when
|
|
* PSR is active as no frames are generated, so check only for PSR.
|
|
*/
|
|
if (HAS_PSR(dev_priv))
|
|
drm_vblank_restore(dev, pipe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Called from drm generic code, passed 'crtc' which
|
|
* we use as a pipe index
|
|
*/
|
|
static void i8xx_disable_vblank(struct drm_device *dev, unsigned int pipe)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
unsigned long irqflags;
|
|
|
|
spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
|
|
i915_disable_pipestat(dev_priv, pipe, PIPE_VBLANK_INTERRUPT_STATUS);
|
|
spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
|
|
}
|
|
|
|
static void i965_disable_vblank(struct drm_device *dev, unsigned int pipe)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
unsigned long irqflags;
|
|
|
|
spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
|
|
i915_disable_pipestat(dev_priv, pipe,
|
|
PIPE_START_VBLANK_INTERRUPT_STATUS);
|
|
spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
|
|
}
|
|
|
|
static void ironlake_disable_vblank(struct drm_device *dev, unsigned int pipe)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
unsigned long irqflags;
|
|
uint32_t bit = INTEL_GEN(dev_priv) >= 7 ?
|
|
DE_PIPE_VBLANK_IVB(pipe) : DE_PIPE_VBLANK(pipe);
|
|
|
|
spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
|
|
ilk_disable_display_irq(dev_priv, bit);
|
|
spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
|
|
}
|
|
|
|
static void gen8_disable_vblank(struct drm_device *dev, unsigned int pipe)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
unsigned long irqflags;
|
|
|
|
spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
|
|
bdw_disable_pipe_irq(dev_priv, pipe, GEN8_PIPE_VBLANK);
|
|
spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
|
|
}
|
|
|
|
static void ibx_irq_reset(struct drm_i915_private *dev_priv)
|
|
{
|
|
if (HAS_PCH_NOP(dev_priv))
|
|
return;
|
|
|
|
GEN3_IRQ_RESET(SDE);
|
|
|
|
if (HAS_PCH_CPT(dev_priv) || HAS_PCH_LPT(dev_priv))
|
|
I915_WRITE(SERR_INT, 0xffffffff);
|
|
}
|
|
|
|
/*
|
|
* SDEIER is also touched by the interrupt handler to work around missed PCH
|
|
* interrupts. Hence we can't update it after the interrupt handler is enabled -
|
|
* instead we unconditionally enable all PCH interrupt sources here, but then
|
|
* only unmask them as needed with SDEIMR.
|
|
*
|
|
* This function needs to be called before interrupts are enabled.
|
|
*/
|
|
static void ibx_irq_pre_postinstall(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
if (HAS_PCH_NOP(dev_priv))
|
|
return;
|
|
|
|
WARN_ON(I915_READ(SDEIER) != 0);
|
|
I915_WRITE(SDEIER, 0xffffffff);
|
|
POSTING_READ(SDEIER);
|
|
}
|
|
|
|
static void gen5_gt_irq_reset(struct drm_i915_private *dev_priv)
|
|
{
|
|
GEN3_IRQ_RESET(GT);
|
|
if (INTEL_GEN(dev_priv) >= 6)
|
|
GEN3_IRQ_RESET(GEN6_PM);
|
|
}
|
|
|
|
static void vlv_display_irq_reset(struct drm_i915_private *dev_priv)
|
|
{
|
|
if (IS_CHERRYVIEW(dev_priv))
|
|
I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK_CHV);
|
|
else
|
|
I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK);
|
|
|
|
i915_hotplug_interrupt_update_locked(dev_priv, 0xffffffff, 0);
|
|
I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
|
|
|
|
i9xx_pipestat_irq_reset(dev_priv);
|
|
|
|
GEN3_IRQ_RESET(VLV_);
|
|
dev_priv->irq_mask = ~0u;
|
|
}
|
|
|
|
static void vlv_display_irq_postinstall(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 pipestat_mask;
|
|
u32 enable_mask;
|
|
enum pipe pipe;
|
|
|
|
pipestat_mask = PIPE_CRC_DONE_INTERRUPT_STATUS;
|
|
|
|
i915_enable_pipestat(dev_priv, PIPE_A, PIPE_GMBUS_INTERRUPT_STATUS);
|
|
for_each_pipe(dev_priv, pipe)
|
|
i915_enable_pipestat(dev_priv, pipe, pipestat_mask);
|
|
|
|
enable_mask = I915_DISPLAY_PORT_INTERRUPT |
|
|
I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
|
|
I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
|
|
I915_LPE_PIPE_A_INTERRUPT |
|
|
I915_LPE_PIPE_B_INTERRUPT;
|
|
|
|
if (IS_CHERRYVIEW(dev_priv))
|
|
enable_mask |= I915_DISPLAY_PIPE_C_EVENT_INTERRUPT |
|
|
I915_LPE_PIPE_C_INTERRUPT;
|
|
|
|
WARN_ON(dev_priv->irq_mask != ~0u);
|
|
|
|
dev_priv->irq_mask = ~enable_mask;
|
|
|
|
GEN3_IRQ_INIT(VLV_, dev_priv->irq_mask, enable_mask);
|
|
}
|
|
|
|
/* drm_dma.h hooks
|
|
*/
|
|
static void ironlake_irq_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
if (IS_GEN5(dev_priv))
|
|
I915_WRITE(HWSTAM, 0xffffffff);
|
|
|
|
GEN3_IRQ_RESET(DE);
|
|
if (IS_GEN7(dev_priv))
|
|
I915_WRITE(GEN7_ERR_INT, 0xffffffff);
|
|
|
|
if (IS_HASWELL(dev_priv)) {
|
|
I915_WRITE(EDP_PSR_IMR, 0xffffffff);
|
|
I915_WRITE(EDP_PSR_IIR, 0xffffffff);
|
|
}
|
|
|
|
gen5_gt_irq_reset(dev_priv);
|
|
|
|
ibx_irq_reset(dev_priv);
|
|
}
|
|
|
|
static void valleyview_irq_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
I915_WRITE(VLV_MASTER_IER, 0);
|
|
POSTING_READ(VLV_MASTER_IER);
|
|
|
|
gen5_gt_irq_reset(dev_priv);
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
if (dev_priv->display_irqs_enabled)
|
|
vlv_display_irq_reset(dev_priv);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
}
|
|
|
|
static void gen8_gt_irq_reset(struct drm_i915_private *dev_priv)
|
|
{
|
|
GEN8_IRQ_RESET_NDX(GT, 0);
|
|
GEN8_IRQ_RESET_NDX(GT, 1);
|
|
GEN8_IRQ_RESET_NDX(GT, 2);
|
|
GEN8_IRQ_RESET_NDX(GT, 3);
|
|
}
|
|
|
|
static void gen8_irq_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
int pipe;
|
|
|
|
I915_WRITE(GEN8_MASTER_IRQ, 0);
|
|
POSTING_READ(GEN8_MASTER_IRQ);
|
|
|
|
gen8_gt_irq_reset(dev_priv);
|
|
|
|
I915_WRITE(EDP_PSR_IMR, 0xffffffff);
|
|
I915_WRITE(EDP_PSR_IIR, 0xffffffff);
|
|
|
|
for_each_pipe(dev_priv, pipe)
|
|
if (intel_display_power_is_enabled(dev_priv,
|
|
POWER_DOMAIN_PIPE(pipe)))
|
|
GEN8_IRQ_RESET_NDX(DE_PIPE, pipe);
|
|
|
|
GEN3_IRQ_RESET(GEN8_DE_PORT_);
|
|
GEN3_IRQ_RESET(GEN8_DE_MISC_);
|
|
GEN3_IRQ_RESET(GEN8_PCU_);
|
|
|
|
if (HAS_PCH_SPLIT(dev_priv))
|
|
ibx_irq_reset(dev_priv);
|
|
}
|
|
|
|
static void gen11_gt_irq_reset(struct drm_i915_private *dev_priv)
|
|
{
|
|
/* Disable RCS, BCS, VCS and VECS class engines. */
|
|
I915_WRITE(GEN11_RENDER_COPY_INTR_ENABLE, 0);
|
|
I915_WRITE(GEN11_VCS_VECS_INTR_ENABLE, 0);
|
|
|
|
/* Restore masks irqs on RCS, BCS, VCS and VECS engines. */
|
|
I915_WRITE(GEN11_RCS0_RSVD_INTR_MASK, ~0);
|
|
I915_WRITE(GEN11_BCS_RSVD_INTR_MASK, ~0);
|
|
I915_WRITE(GEN11_VCS0_VCS1_INTR_MASK, ~0);
|
|
I915_WRITE(GEN11_VCS2_VCS3_INTR_MASK, ~0);
|
|
I915_WRITE(GEN11_VECS0_VECS1_INTR_MASK, ~0);
|
|
|
|
I915_WRITE(GEN11_GPM_WGBOXPERF_INTR_ENABLE, 0);
|
|
I915_WRITE(GEN11_GPM_WGBOXPERF_INTR_MASK, ~0);
|
|
}
|
|
|
|
static void gen11_irq_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
int pipe;
|
|
|
|
I915_WRITE(GEN11_GFX_MSTR_IRQ, 0);
|
|
POSTING_READ(GEN11_GFX_MSTR_IRQ);
|
|
|
|
gen11_gt_irq_reset(dev_priv);
|
|
|
|
I915_WRITE(GEN11_DISPLAY_INT_CTL, 0);
|
|
|
|
for_each_pipe(dev_priv, pipe)
|
|
if (intel_display_power_is_enabled(dev_priv,
|
|
POWER_DOMAIN_PIPE(pipe)))
|
|
GEN8_IRQ_RESET_NDX(DE_PIPE, pipe);
|
|
|
|
GEN3_IRQ_RESET(GEN8_DE_PORT_);
|
|
GEN3_IRQ_RESET(GEN8_DE_MISC_);
|
|
GEN3_IRQ_RESET(GEN8_PCU_);
|
|
}
|
|
|
|
void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv,
|
|
u8 pipe_mask)
|
|
{
|
|
uint32_t extra_ier = GEN8_PIPE_VBLANK | GEN8_PIPE_FIFO_UNDERRUN;
|
|
enum pipe pipe;
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
|
|
if (!intel_irqs_enabled(dev_priv)) {
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
return;
|
|
}
|
|
|
|
for_each_pipe_masked(dev_priv, pipe, pipe_mask)
|
|
GEN8_IRQ_INIT_NDX(DE_PIPE, pipe,
|
|
dev_priv->de_irq_mask[pipe],
|
|
~dev_priv->de_irq_mask[pipe] | extra_ier);
|
|
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
}
|
|
|
|
void gen8_irq_power_well_pre_disable(struct drm_i915_private *dev_priv,
|
|
u8 pipe_mask)
|
|
{
|
|
enum pipe pipe;
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
|
|
if (!intel_irqs_enabled(dev_priv)) {
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
return;
|
|
}
|
|
|
|
for_each_pipe_masked(dev_priv, pipe, pipe_mask)
|
|
GEN8_IRQ_RESET_NDX(DE_PIPE, pipe);
|
|
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
|
|
/* make sure we're done processing display irqs */
|
|
synchronize_irq(dev_priv->drm.irq);
|
|
}
|
|
|
|
static void cherryview_irq_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
I915_WRITE(GEN8_MASTER_IRQ, 0);
|
|
POSTING_READ(GEN8_MASTER_IRQ);
|
|
|
|
gen8_gt_irq_reset(dev_priv);
|
|
|
|
GEN3_IRQ_RESET(GEN8_PCU_);
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
if (dev_priv->display_irqs_enabled)
|
|
vlv_display_irq_reset(dev_priv);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
}
|
|
|
|
static u32 intel_hpd_enabled_irqs(struct drm_i915_private *dev_priv,
|
|
const u32 hpd[HPD_NUM_PINS])
|
|
{
|
|
struct intel_encoder *encoder;
|
|
u32 enabled_irqs = 0;
|
|
|
|
for_each_intel_encoder(&dev_priv->drm, encoder)
|
|
if (dev_priv->hotplug.stats[encoder->hpd_pin].state == HPD_ENABLED)
|
|
enabled_irqs |= hpd[encoder->hpd_pin];
|
|
|
|
return enabled_irqs;
|
|
}
|
|
|
|
static void ibx_hpd_detection_setup(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 hotplug;
|
|
|
|
/*
|
|
* Enable digital hotplug on the PCH, and configure the DP short pulse
|
|
* duration to 2ms (which is the minimum in the Display Port spec).
|
|
* The pulse duration bits are reserved on LPT+.
|
|
*/
|
|
hotplug = I915_READ(PCH_PORT_HOTPLUG);
|
|
hotplug &= ~(PORTB_PULSE_DURATION_MASK |
|
|
PORTC_PULSE_DURATION_MASK |
|
|
PORTD_PULSE_DURATION_MASK);
|
|
hotplug |= PORTB_HOTPLUG_ENABLE | PORTB_PULSE_DURATION_2ms;
|
|
hotplug |= PORTC_HOTPLUG_ENABLE | PORTC_PULSE_DURATION_2ms;
|
|
hotplug |= PORTD_HOTPLUG_ENABLE | PORTD_PULSE_DURATION_2ms;
|
|
/*
|
|
* When CPU and PCH are on the same package, port A
|
|
* HPD must be enabled in both north and south.
|
|
*/
|
|
if (HAS_PCH_LPT_LP(dev_priv))
|
|
hotplug |= PORTA_HOTPLUG_ENABLE;
|
|
I915_WRITE(PCH_PORT_HOTPLUG, hotplug);
|
|
}
|
|
|
|
static void ibx_hpd_irq_setup(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 hotplug_irqs, enabled_irqs;
|
|
|
|
if (HAS_PCH_IBX(dev_priv)) {
|
|
hotplug_irqs = SDE_HOTPLUG_MASK;
|
|
enabled_irqs = intel_hpd_enabled_irqs(dev_priv, hpd_ibx);
|
|
} else {
|
|
hotplug_irqs = SDE_HOTPLUG_MASK_CPT;
|
|
enabled_irqs = intel_hpd_enabled_irqs(dev_priv, hpd_cpt);
|
|
}
|
|
|
|
ibx_display_interrupt_update(dev_priv, hotplug_irqs, enabled_irqs);
|
|
|
|
ibx_hpd_detection_setup(dev_priv);
|
|
}
|
|
|
|
static void spt_hpd_detection_setup(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 val, hotplug;
|
|
|
|
/* Display WA #1179 WaHardHangonHotPlug: cnp */
|
|
if (HAS_PCH_CNP(dev_priv)) {
|
|
val = I915_READ(SOUTH_CHICKEN1);
|
|
val &= ~CHASSIS_CLK_REQ_DURATION_MASK;
|
|
val |= CHASSIS_CLK_REQ_DURATION(0xf);
|
|
I915_WRITE(SOUTH_CHICKEN1, val);
|
|
}
|
|
|
|
/* Enable digital hotplug on the PCH */
|
|
hotplug = I915_READ(PCH_PORT_HOTPLUG);
|
|
hotplug |= PORTA_HOTPLUG_ENABLE |
|
|
PORTB_HOTPLUG_ENABLE |
|
|
PORTC_HOTPLUG_ENABLE |
|
|
PORTD_HOTPLUG_ENABLE;
|
|
I915_WRITE(PCH_PORT_HOTPLUG, hotplug);
|
|
|
|
hotplug = I915_READ(PCH_PORT_HOTPLUG2);
|
|
hotplug |= PORTE_HOTPLUG_ENABLE;
|
|
I915_WRITE(PCH_PORT_HOTPLUG2, hotplug);
|
|
}
|
|
|
|
static void spt_hpd_irq_setup(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 hotplug_irqs, enabled_irqs;
|
|
|
|
hotplug_irqs = SDE_HOTPLUG_MASK_SPT;
|
|
enabled_irqs = intel_hpd_enabled_irqs(dev_priv, hpd_spt);
|
|
|
|
ibx_display_interrupt_update(dev_priv, hotplug_irqs, enabled_irqs);
|
|
|
|
spt_hpd_detection_setup(dev_priv);
|
|
}
|
|
|
|
static void ilk_hpd_detection_setup(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 hotplug;
|
|
|
|
/*
|
|
* Enable digital hotplug on the CPU, and configure the DP short pulse
|
|
* duration to 2ms (which is the minimum in the Display Port spec)
|
|
* The pulse duration bits are reserved on HSW+.
|
|
*/
|
|
hotplug = I915_READ(DIGITAL_PORT_HOTPLUG_CNTRL);
|
|
hotplug &= ~DIGITAL_PORTA_PULSE_DURATION_MASK;
|
|
hotplug |= DIGITAL_PORTA_HOTPLUG_ENABLE |
|
|
DIGITAL_PORTA_PULSE_DURATION_2ms;
|
|
I915_WRITE(DIGITAL_PORT_HOTPLUG_CNTRL, hotplug);
|
|
}
|
|
|
|
static void ilk_hpd_irq_setup(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 hotplug_irqs, enabled_irqs;
|
|
|
|
if (INTEL_GEN(dev_priv) >= 8) {
|
|
hotplug_irqs = GEN8_PORT_DP_A_HOTPLUG;
|
|
enabled_irqs = intel_hpd_enabled_irqs(dev_priv, hpd_bdw);
|
|
|
|
bdw_update_port_irq(dev_priv, hotplug_irqs, enabled_irqs);
|
|
} else if (INTEL_GEN(dev_priv) >= 7) {
|
|
hotplug_irqs = DE_DP_A_HOTPLUG_IVB;
|
|
enabled_irqs = intel_hpd_enabled_irqs(dev_priv, hpd_ivb);
|
|
|
|
ilk_update_display_irq(dev_priv, hotplug_irqs, enabled_irqs);
|
|
} else {
|
|
hotplug_irqs = DE_DP_A_HOTPLUG;
|
|
enabled_irqs = intel_hpd_enabled_irqs(dev_priv, hpd_ilk);
|
|
|
|
ilk_update_display_irq(dev_priv, hotplug_irqs, enabled_irqs);
|
|
}
|
|
|
|
ilk_hpd_detection_setup(dev_priv);
|
|
|
|
ibx_hpd_irq_setup(dev_priv);
|
|
}
|
|
|
|
static void __bxt_hpd_detection_setup(struct drm_i915_private *dev_priv,
|
|
u32 enabled_irqs)
|
|
{
|
|
u32 hotplug;
|
|
|
|
hotplug = I915_READ(PCH_PORT_HOTPLUG);
|
|
hotplug |= PORTA_HOTPLUG_ENABLE |
|
|
PORTB_HOTPLUG_ENABLE |
|
|
PORTC_HOTPLUG_ENABLE;
|
|
|
|
DRM_DEBUG_KMS("Invert bit setting: hp_ctl:%x hp_port:%x\n",
|
|
hotplug, enabled_irqs);
|
|
hotplug &= ~BXT_DDI_HPD_INVERT_MASK;
|
|
|
|
/*
|
|
* For BXT invert bit has to be set based on AOB design
|
|
* for HPD detection logic, update it based on VBT fields.
|
|
*/
|
|
if ((enabled_irqs & BXT_DE_PORT_HP_DDIA) &&
|
|
intel_bios_is_port_hpd_inverted(dev_priv, PORT_A))
|
|
hotplug |= BXT_DDIA_HPD_INVERT;
|
|
if ((enabled_irqs & BXT_DE_PORT_HP_DDIB) &&
|
|
intel_bios_is_port_hpd_inverted(dev_priv, PORT_B))
|
|
hotplug |= BXT_DDIB_HPD_INVERT;
|
|
if ((enabled_irqs & BXT_DE_PORT_HP_DDIC) &&
|
|
intel_bios_is_port_hpd_inverted(dev_priv, PORT_C))
|
|
hotplug |= BXT_DDIC_HPD_INVERT;
|
|
|
|
I915_WRITE(PCH_PORT_HOTPLUG, hotplug);
|
|
}
|
|
|
|
static void bxt_hpd_detection_setup(struct drm_i915_private *dev_priv)
|
|
{
|
|
__bxt_hpd_detection_setup(dev_priv, BXT_DE_PORT_HOTPLUG_MASK);
|
|
}
|
|
|
|
static void bxt_hpd_irq_setup(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 hotplug_irqs, enabled_irqs;
|
|
|
|
enabled_irqs = intel_hpd_enabled_irqs(dev_priv, hpd_bxt);
|
|
hotplug_irqs = BXT_DE_PORT_HOTPLUG_MASK;
|
|
|
|
bdw_update_port_irq(dev_priv, hotplug_irqs, enabled_irqs);
|
|
|
|
__bxt_hpd_detection_setup(dev_priv, enabled_irqs);
|
|
}
|
|
|
|
static void ibx_irq_postinstall(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
u32 mask;
|
|
|
|
if (HAS_PCH_NOP(dev_priv))
|
|
return;
|
|
|
|
if (HAS_PCH_IBX(dev_priv))
|
|
mask = SDE_GMBUS | SDE_AUX_MASK | SDE_POISON;
|
|
else if (HAS_PCH_CPT(dev_priv) || HAS_PCH_LPT(dev_priv))
|
|
mask = SDE_GMBUS_CPT | SDE_AUX_MASK_CPT;
|
|
else
|
|
mask = SDE_GMBUS_CPT;
|
|
|
|
gen3_assert_iir_is_zero(dev_priv, SDEIIR);
|
|
I915_WRITE(SDEIMR, ~mask);
|
|
|
|
if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv) ||
|
|
HAS_PCH_LPT(dev_priv))
|
|
ibx_hpd_detection_setup(dev_priv);
|
|
else
|
|
spt_hpd_detection_setup(dev_priv);
|
|
}
|
|
|
|
static void gen5_gt_irq_postinstall(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
u32 pm_irqs, gt_irqs;
|
|
|
|
pm_irqs = gt_irqs = 0;
|
|
|
|
dev_priv->gt_irq_mask = ~0;
|
|
if (HAS_L3_DPF(dev_priv)) {
|
|
/* L3 parity interrupt is always unmasked. */
|
|
dev_priv->gt_irq_mask = ~GT_PARITY_ERROR(dev_priv);
|
|
gt_irqs |= GT_PARITY_ERROR(dev_priv);
|
|
}
|
|
|
|
gt_irqs |= GT_RENDER_USER_INTERRUPT;
|
|
if (IS_GEN5(dev_priv)) {
|
|
gt_irqs |= ILK_BSD_USER_INTERRUPT;
|
|
} else {
|
|
gt_irqs |= GT_BLT_USER_INTERRUPT | GT_BSD_USER_INTERRUPT;
|
|
}
|
|
|
|
GEN3_IRQ_INIT(GT, dev_priv->gt_irq_mask, gt_irqs);
|
|
|
|
if (INTEL_GEN(dev_priv) >= 6) {
|
|
/*
|
|
* RPS interrupts will get enabled/disabled on demand when RPS
|
|
* itself is enabled/disabled.
|
|
*/
|
|
if (HAS_VEBOX(dev_priv)) {
|
|
pm_irqs |= PM_VEBOX_USER_INTERRUPT;
|
|
dev_priv->pm_ier |= PM_VEBOX_USER_INTERRUPT;
|
|
}
|
|
|
|
dev_priv->pm_imr = 0xffffffff;
|
|
GEN3_IRQ_INIT(GEN6_PM, dev_priv->pm_imr, pm_irqs);
|
|
}
|
|
}
|
|
|
|
static int ironlake_irq_postinstall(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
u32 display_mask, extra_mask;
|
|
|
|
if (INTEL_GEN(dev_priv) >= 7) {
|
|
display_mask = (DE_MASTER_IRQ_CONTROL | DE_GSE_IVB |
|
|
DE_PCH_EVENT_IVB | DE_AUX_CHANNEL_A_IVB);
|
|
extra_mask = (DE_PIPEC_VBLANK_IVB | DE_PIPEB_VBLANK_IVB |
|
|
DE_PIPEA_VBLANK_IVB | DE_ERR_INT_IVB |
|
|
DE_DP_A_HOTPLUG_IVB);
|
|
} else {
|
|
display_mask = (DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT |
|
|
DE_AUX_CHANNEL_A | DE_PIPEB_CRC_DONE |
|
|
DE_PIPEA_CRC_DONE | DE_POISON);
|
|
extra_mask = (DE_PIPEA_VBLANK | DE_PIPEB_VBLANK | DE_PCU_EVENT |
|
|
DE_PIPEB_FIFO_UNDERRUN | DE_PIPEA_FIFO_UNDERRUN |
|
|
DE_DP_A_HOTPLUG);
|
|
}
|
|
|
|
if (IS_HASWELL(dev_priv)) {
|
|
gen3_assert_iir_is_zero(dev_priv, EDP_PSR_IIR);
|
|
intel_psr_irq_control(dev_priv, dev_priv->psr.debug);
|
|
display_mask |= DE_EDP_PSR_INT_HSW;
|
|
}
|
|
|
|
dev_priv->irq_mask = ~display_mask;
|
|
|
|
ibx_irq_pre_postinstall(dev);
|
|
|
|
GEN3_IRQ_INIT(DE, dev_priv->irq_mask, display_mask | extra_mask);
|
|
|
|
gen5_gt_irq_postinstall(dev);
|
|
|
|
ilk_hpd_detection_setup(dev_priv);
|
|
|
|
ibx_irq_postinstall(dev);
|
|
|
|
if (IS_IRONLAKE_M(dev_priv)) {
|
|
/* Enable PCU event interrupts
|
|
*
|
|
* spinlocking not required here for correctness since interrupt
|
|
* setup is guaranteed to run in single-threaded context. But we
|
|
* need it to make the assert_spin_locked happy. */
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
ilk_enable_display_irq(dev_priv, DE_PCU_EVENT);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void valleyview_enable_display_irqs(struct drm_i915_private *dev_priv)
|
|
{
|
|
lockdep_assert_held(&dev_priv->irq_lock);
|
|
|
|
if (dev_priv->display_irqs_enabled)
|
|
return;
|
|
|
|
dev_priv->display_irqs_enabled = true;
|
|
|
|
if (intel_irqs_enabled(dev_priv)) {
|
|
vlv_display_irq_reset(dev_priv);
|
|
vlv_display_irq_postinstall(dev_priv);
|
|
}
|
|
}
|
|
|
|
void valleyview_disable_display_irqs(struct drm_i915_private *dev_priv)
|
|
{
|
|
lockdep_assert_held(&dev_priv->irq_lock);
|
|
|
|
if (!dev_priv->display_irqs_enabled)
|
|
return;
|
|
|
|
dev_priv->display_irqs_enabled = false;
|
|
|
|
if (intel_irqs_enabled(dev_priv))
|
|
vlv_display_irq_reset(dev_priv);
|
|
}
|
|
|
|
|
|
static int valleyview_irq_postinstall(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
gen5_gt_irq_postinstall(dev);
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
if (dev_priv->display_irqs_enabled)
|
|
vlv_display_irq_postinstall(dev_priv);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
|
|
I915_WRITE(VLV_MASTER_IER, MASTER_INTERRUPT_ENABLE);
|
|
POSTING_READ(VLV_MASTER_IER);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void gen8_gt_irq_postinstall(struct drm_i915_private *dev_priv)
|
|
{
|
|
/* These are interrupts we'll toggle with the ring mask register */
|
|
uint32_t gt_interrupts[] = {
|
|
GT_RENDER_USER_INTERRUPT << GEN8_RCS_IRQ_SHIFT |
|
|
GT_CONTEXT_SWITCH_INTERRUPT << GEN8_RCS_IRQ_SHIFT |
|
|
GT_RENDER_USER_INTERRUPT << GEN8_BCS_IRQ_SHIFT |
|
|
GT_CONTEXT_SWITCH_INTERRUPT << GEN8_BCS_IRQ_SHIFT,
|
|
GT_RENDER_USER_INTERRUPT << GEN8_VCS1_IRQ_SHIFT |
|
|
GT_CONTEXT_SWITCH_INTERRUPT << GEN8_VCS1_IRQ_SHIFT |
|
|
GT_RENDER_USER_INTERRUPT << GEN8_VCS2_IRQ_SHIFT |
|
|
GT_CONTEXT_SWITCH_INTERRUPT << GEN8_VCS2_IRQ_SHIFT,
|
|
0,
|
|
GT_RENDER_USER_INTERRUPT << GEN8_VECS_IRQ_SHIFT |
|
|
GT_CONTEXT_SWITCH_INTERRUPT << GEN8_VECS_IRQ_SHIFT
|
|
};
|
|
|
|
if (HAS_L3_DPF(dev_priv))
|
|
gt_interrupts[0] |= GT_RENDER_L3_PARITY_ERROR_INTERRUPT;
|
|
|
|
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. Same wil be the case for GuC interrupts.
|
|
*/
|
|
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]);
|
|
}
|
|
|
|
static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv)
|
|
{
|
|
uint32_t de_pipe_masked = GEN8_PIPE_CDCLK_CRC_DONE;
|
|
uint32_t de_pipe_enables;
|
|
u32 de_port_masked = GEN8_AUX_CHANNEL_A;
|
|
u32 de_port_enables;
|
|
u32 de_misc_masked = GEN8_DE_MISC_GSE | GEN8_DE_EDP_PSR;
|
|
enum pipe pipe;
|
|
|
|
if (INTEL_GEN(dev_priv) >= 9) {
|
|
de_pipe_masked |= GEN9_DE_PIPE_IRQ_FAULT_ERRORS;
|
|
de_port_masked |= GEN9_AUX_CHANNEL_B | GEN9_AUX_CHANNEL_C |
|
|
GEN9_AUX_CHANNEL_D;
|
|
if (IS_GEN9_LP(dev_priv))
|
|
de_port_masked |= BXT_DE_PORT_GMBUS;
|
|
} else {
|
|
de_pipe_masked |= GEN8_DE_PIPE_IRQ_FAULT_ERRORS;
|
|
}
|
|
|
|
if (IS_CNL_WITH_PORT_F(dev_priv))
|
|
de_port_masked |= CNL_AUX_CHANNEL_F;
|
|
|
|
de_pipe_enables = de_pipe_masked | GEN8_PIPE_VBLANK |
|
|
GEN8_PIPE_FIFO_UNDERRUN;
|
|
|
|
de_port_enables = de_port_masked;
|
|
if (IS_GEN9_LP(dev_priv))
|
|
de_port_enables |= BXT_DE_PORT_HOTPLUG_MASK;
|
|
else if (IS_BROADWELL(dev_priv))
|
|
de_port_enables |= GEN8_PORT_DP_A_HOTPLUG;
|
|
|
|
gen3_assert_iir_is_zero(dev_priv, EDP_PSR_IIR);
|
|
intel_psr_irq_control(dev_priv, dev_priv->psr.debug);
|
|
|
|
for_each_pipe(dev_priv, pipe) {
|
|
dev_priv->de_irq_mask[pipe] = ~de_pipe_masked;
|
|
|
|
if (intel_display_power_is_enabled(dev_priv,
|
|
POWER_DOMAIN_PIPE(pipe)))
|
|
GEN8_IRQ_INIT_NDX(DE_PIPE, pipe,
|
|
dev_priv->de_irq_mask[pipe],
|
|
de_pipe_enables);
|
|
}
|
|
|
|
GEN3_IRQ_INIT(GEN8_DE_PORT_, ~de_port_masked, de_port_enables);
|
|
GEN3_IRQ_INIT(GEN8_DE_MISC_, ~de_misc_masked, de_misc_masked);
|
|
|
|
if (IS_GEN9_LP(dev_priv))
|
|
bxt_hpd_detection_setup(dev_priv);
|
|
else if (IS_BROADWELL(dev_priv))
|
|
ilk_hpd_detection_setup(dev_priv);
|
|
}
|
|
|
|
static int gen8_irq_postinstall(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
if (HAS_PCH_SPLIT(dev_priv))
|
|
ibx_irq_pre_postinstall(dev);
|
|
|
|
gen8_gt_irq_postinstall(dev_priv);
|
|
gen8_de_irq_postinstall(dev_priv);
|
|
|
|
if (HAS_PCH_SPLIT(dev_priv))
|
|
ibx_irq_postinstall(dev);
|
|
|
|
I915_WRITE(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL);
|
|
POSTING_READ(GEN8_MASTER_IRQ);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void gen11_gt_irq_postinstall(struct drm_i915_private *dev_priv)
|
|
{
|
|
const u32 irqs = GT_RENDER_USER_INTERRUPT | GT_CONTEXT_SWITCH_INTERRUPT;
|
|
|
|
BUILD_BUG_ON(irqs & 0xffff0000);
|
|
|
|
/* Enable RCS, BCS, VCS and VECS class interrupts. */
|
|
I915_WRITE(GEN11_RENDER_COPY_INTR_ENABLE, irqs << 16 | irqs);
|
|
I915_WRITE(GEN11_VCS_VECS_INTR_ENABLE, irqs << 16 | irqs);
|
|
|
|
/* Unmask irqs on RCS, BCS, VCS and VECS engines. */
|
|
I915_WRITE(GEN11_RCS0_RSVD_INTR_MASK, ~(irqs << 16));
|
|
I915_WRITE(GEN11_BCS_RSVD_INTR_MASK, ~(irqs << 16));
|
|
I915_WRITE(GEN11_VCS0_VCS1_INTR_MASK, ~(irqs | irqs << 16));
|
|
I915_WRITE(GEN11_VCS2_VCS3_INTR_MASK, ~(irqs | irqs << 16));
|
|
I915_WRITE(GEN11_VECS0_VECS1_INTR_MASK, ~(irqs | irqs << 16));
|
|
|
|
/*
|
|
* RPS interrupts will get enabled/disabled on demand when RPS itself
|
|
* is enabled/disabled.
|
|
*/
|
|
dev_priv->pm_ier = 0x0;
|
|
dev_priv->pm_imr = ~dev_priv->pm_ier;
|
|
I915_WRITE(GEN11_GPM_WGBOXPERF_INTR_ENABLE, 0);
|
|
I915_WRITE(GEN11_GPM_WGBOXPERF_INTR_MASK, ~0);
|
|
}
|
|
|
|
static int gen11_irq_postinstall(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = dev->dev_private;
|
|
|
|
gen11_gt_irq_postinstall(dev_priv);
|
|
gen8_de_irq_postinstall(dev_priv);
|
|
|
|
I915_WRITE(GEN11_DISPLAY_INT_CTL, GEN11_DISPLAY_IRQ_ENABLE);
|
|
|
|
I915_WRITE(GEN11_GFX_MSTR_IRQ, GEN11_MASTER_IRQ);
|
|
POSTING_READ(GEN11_GFX_MSTR_IRQ);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cherryview_irq_postinstall(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
gen8_gt_irq_postinstall(dev_priv);
|
|
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
if (dev_priv->display_irqs_enabled)
|
|
vlv_display_irq_postinstall(dev_priv);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
|
|
I915_WRITE(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL);
|
|
POSTING_READ(GEN8_MASTER_IRQ);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void i8xx_irq_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
i9xx_pipestat_irq_reset(dev_priv);
|
|
|
|
I915_WRITE16(HWSTAM, 0xffff);
|
|
|
|
GEN2_IRQ_RESET();
|
|
}
|
|
|
|
static int i8xx_irq_postinstall(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
u16 enable_mask;
|
|
|
|
I915_WRITE16(EMR, ~(I915_ERROR_PAGE_TABLE |
|
|
I915_ERROR_MEMORY_REFRESH));
|
|
|
|
/* Unmask the interrupts that we always want on. */
|
|
dev_priv->irq_mask =
|
|
~(I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
|
|
I915_DISPLAY_PIPE_B_EVENT_INTERRUPT);
|
|
|
|
enable_mask =
|
|
I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
|
|
I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
|
|
I915_USER_INTERRUPT;
|
|
|
|
GEN2_IRQ_INIT(, dev_priv->irq_mask, enable_mask);
|
|
|
|
/* Interrupt setup is already guaranteed to be single-threaded, this is
|
|
* just to make the assert_spin_locked check happy. */
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
i915_enable_pipestat(dev_priv, PIPE_A, PIPE_CRC_DONE_INTERRUPT_STATUS);
|
|
i915_enable_pipestat(dev_priv, PIPE_B, PIPE_CRC_DONE_INTERRUPT_STATUS);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t i8xx_irq_handler(int irq, void *arg)
|
|
{
|
|
struct drm_device *dev = arg;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
irqreturn_t ret = IRQ_NONE;
|
|
|
|
if (!intel_irqs_enabled(dev_priv))
|
|
return IRQ_NONE;
|
|
|
|
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
do {
|
|
u32 pipe_stats[I915_MAX_PIPES] = {};
|
|
u16 iir;
|
|
|
|
iir = I915_READ16(IIR);
|
|
if (iir == 0)
|
|
break;
|
|
|
|
ret = IRQ_HANDLED;
|
|
|
|
/* Call regardless, as some status bits might not be
|
|
* signalled in iir */
|
|
i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats);
|
|
|
|
I915_WRITE16(IIR, iir);
|
|
|
|
if (iir & I915_USER_INTERRUPT)
|
|
notify_ring(dev_priv->engine[RCS]);
|
|
|
|
if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT)
|
|
DRM_DEBUG("Command parser error, iir 0x%08x\n", iir);
|
|
|
|
i8xx_pipestat_irq_handler(dev_priv, iir, pipe_stats);
|
|
} while (0);
|
|
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void i915_irq_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
if (I915_HAS_HOTPLUG(dev_priv)) {
|
|
i915_hotplug_interrupt_update(dev_priv, 0xffffffff, 0);
|
|
I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
|
|
}
|
|
|
|
i9xx_pipestat_irq_reset(dev_priv);
|
|
|
|
I915_WRITE(HWSTAM, 0xffffffff);
|
|
|
|
GEN3_IRQ_RESET();
|
|
}
|
|
|
|
static int i915_irq_postinstall(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
u32 enable_mask;
|
|
|
|
I915_WRITE(EMR, ~(I915_ERROR_PAGE_TABLE |
|
|
I915_ERROR_MEMORY_REFRESH));
|
|
|
|
/* Unmask the interrupts that we always want on. */
|
|
dev_priv->irq_mask =
|
|
~(I915_ASLE_INTERRUPT |
|
|
I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
|
|
I915_DISPLAY_PIPE_B_EVENT_INTERRUPT);
|
|
|
|
enable_mask =
|
|
I915_ASLE_INTERRUPT |
|
|
I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
|
|
I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
|
|
I915_USER_INTERRUPT;
|
|
|
|
if (I915_HAS_HOTPLUG(dev_priv)) {
|
|
/* Enable in IER... */
|
|
enable_mask |= I915_DISPLAY_PORT_INTERRUPT;
|
|
/* and unmask in IMR */
|
|
dev_priv->irq_mask &= ~I915_DISPLAY_PORT_INTERRUPT;
|
|
}
|
|
|
|
GEN3_IRQ_INIT(, dev_priv->irq_mask, enable_mask);
|
|
|
|
/* Interrupt setup is already guaranteed to be single-threaded, this is
|
|
* just to make the assert_spin_locked check happy. */
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
i915_enable_pipestat(dev_priv, PIPE_A, PIPE_CRC_DONE_INTERRUPT_STATUS);
|
|
i915_enable_pipestat(dev_priv, PIPE_B, PIPE_CRC_DONE_INTERRUPT_STATUS);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
|
|
i915_enable_asle_pipestat(dev_priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t i915_irq_handler(int irq, void *arg)
|
|
{
|
|
struct drm_device *dev = arg;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
irqreturn_t ret = IRQ_NONE;
|
|
|
|
if (!intel_irqs_enabled(dev_priv))
|
|
return IRQ_NONE;
|
|
|
|
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
do {
|
|
u32 pipe_stats[I915_MAX_PIPES] = {};
|
|
u32 hotplug_status = 0;
|
|
u32 iir;
|
|
|
|
iir = I915_READ(IIR);
|
|
if (iir == 0)
|
|
break;
|
|
|
|
ret = IRQ_HANDLED;
|
|
|
|
if (I915_HAS_HOTPLUG(dev_priv) &&
|
|
iir & I915_DISPLAY_PORT_INTERRUPT)
|
|
hotplug_status = i9xx_hpd_irq_ack(dev_priv);
|
|
|
|
/* Call regardless, as some status bits might not be
|
|
* signalled in iir */
|
|
i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats);
|
|
|
|
I915_WRITE(IIR, iir);
|
|
|
|
if (iir & I915_USER_INTERRUPT)
|
|
notify_ring(dev_priv->engine[RCS]);
|
|
|
|
if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT)
|
|
DRM_DEBUG("Command parser error, iir 0x%08x\n", iir);
|
|
|
|
if (hotplug_status)
|
|
i9xx_hpd_irq_handler(dev_priv, hotplug_status);
|
|
|
|
i915_pipestat_irq_handler(dev_priv, iir, pipe_stats);
|
|
} while (0);
|
|
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void i965_irq_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
|
|
i915_hotplug_interrupt_update(dev_priv, 0xffffffff, 0);
|
|
I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
|
|
|
|
i9xx_pipestat_irq_reset(dev_priv);
|
|
|
|
I915_WRITE(HWSTAM, 0xffffffff);
|
|
|
|
GEN3_IRQ_RESET();
|
|
}
|
|
|
|
static int i965_irq_postinstall(struct drm_device *dev)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
u32 enable_mask;
|
|
u32 error_mask;
|
|
|
|
/*
|
|
* Enable some error detection, note the instruction error mask
|
|
* bit is reserved, so we leave it masked.
|
|
*/
|
|
if (IS_G4X(dev_priv)) {
|
|
error_mask = ~(GM45_ERROR_PAGE_TABLE |
|
|
GM45_ERROR_MEM_PRIV |
|
|
GM45_ERROR_CP_PRIV |
|
|
I915_ERROR_MEMORY_REFRESH);
|
|
} else {
|
|
error_mask = ~(I915_ERROR_PAGE_TABLE |
|
|
I915_ERROR_MEMORY_REFRESH);
|
|
}
|
|
I915_WRITE(EMR, error_mask);
|
|
|
|
/* Unmask the interrupts that we always want on. */
|
|
dev_priv->irq_mask =
|
|
~(I915_ASLE_INTERRUPT |
|
|
I915_DISPLAY_PORT_INTERRUPT |
|
|
I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
|
|
I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
|
|
I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT);
|
|
|
|
enable_mask =
|
|
I915_ASLE_INTERRUPT |
|
|
I915_DISPLAY_PORT_INTERRUPT |
|
|
I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
|
|
I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
|
|
I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT |
|
|
I915_USER_INTERRUPT;
|
|
|
|
if (IS_G4X(dev_priv))
|
|
enable_mask |= I915_BSD_USER_INTERRUPT;
|
|
|
|
GEN3_IRQ_INIT(, dev_priv->irq_mask, enable_mask);
|
|
|
|
/* Interrupt setup is already guaranteed to be single-threaded, this is
|
|
* just to make the assert_spin_locked check happy. */
|
|
spin_lock_irq(&dev_priv->irq_lock);
|
|
i915_enable_pipestat(dev_priv, PIPE_A, PIPE_GMBUS_INTERRUPT_STATUS);
|
|
i915_enable_pipestat(dev_priv, PIPE_A, PIPE_CRC_DONE_INTERRUPT_STATUS);
|
|
i915_enable_pipestat(dev_priv, PIPE_B, PIPE_CRC_DONE_INTERRUPT_STATUS);
|
|
spin_unlock_irq(&dev_priv->irq_lock);
|
|
|
|
i915_enable_asle_pipestat(dev_priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void i915_hpd_irq_setup(struct drm_i915_private *dev_priv)
|
|
{
|
|
u32 hotplug_en;
|
|
|
|
lockdep_assert_held(&dev_priv->irq_lock);
|
|
|
|
/* Note HDMI and DP share hotplug bits */
|
|
/* enable bits are the same for all generations */
|
|
hotplug_en = intel_hpd_enabled_irqs(dev_priv, hpd_mask_i915);
|
|
/* Programming the CRT detection parameters tends
|
|
to generate a spurious hotplug event about three
|
|
seconds later. So just do it once.
|
|
*/
|
|
if (IS_G4X(dev_priv))
|
|
hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64;
|
|
hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
|
|
|
|
/* Ignore TV since it's buggy */
|
|
i915_hotplug_interrupt_update_locked(dev_priv,
|
|
HOTPLUG_INT_EN_MASK |
|
|
CRT_HOTPLUG_VOLTAGE_COMPARE_MASK |
|
|
CRT_HOTPLUG_ACTIVATION_PERIOD_64,
|
|
hotplug_en);
|
|
}
|
|
|
|
static irqreturn_t i965_irq_handler(int irq, void *arg)
|
|
{
|
|
struct drm_device *dev = arg;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
irqreturn_t ret = IRQ_NONE;
|
|
|
|
if (!intel_irqs_enabled(dev_priv))
|
|
return IRQ_NONE;
|
|
|
|
/* IRQs are synced during runtime_suspend, we don't require a wakeref */
|
|
disable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
do {
|
|
u32 pipe_stats[I915_MAX_PIPES] = {};
|
|
u32 hotplug_status = 0;
|
|
u32 iir;
|
|
|
|
iir = I915_READ(IIR);
|
|
if (iir == 0)
|
|
break;
|
|
|
|
ret = IRQ_HANDLED;
|
|
|
|
if (iir & I915_DISPLAY_PORT_INTERRUPT)
|
|
hotplug_status = i9xx_hpd_irq_ack(dev_priv);
|
|
|
|
/* Call regardless, as some status bits might not be
|
|
* signalled in iir */
|
|
i9xx_pipestat_irq_ack(dev_priv, iir, pipe_stats);
|
|
|
|
I915_WRITE(IIR, iir);
|
|
|
|
if (iir & I915_USER_INTERRUPT)
|
|
notify_ring(dev_priv->engine[RCS]);
|
|
|
|
if (iir & I915_BSD_USER_INTERRUPT)
|
|
notify_ring(dev_priv->engine[VCS]);
|
|
|
|
if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT)
|
|
DRM_DEBUG("Command parser error, iir 0x%08x\n", iir);
|
|
|
|
if (hotplug_status)
|
|
i9xx_hpd_irq_handler(dev_priv, hotplug_status);
|
|
|
|
i965_pipestat_irq_handler(dev_priv, iir, pipe_stats);
|
|
} while (0);
|
|
|
|
enable_rpm_wakeref_asserts(dev_priv);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* intel_irq_init - initializes irq support
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* This function initializes all the irq support including work items, timers
|
|
* and all the vtables. It does not setup the interrupt itself though.
|
|
*/
|
|
void intel_irq_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct drm_device *dev = &dev_priv->drm;
|
|
struct intel_rps *rps = &dev_priv->gt_pm.rps;
|
|
int i;
|
|
|
|
intel_hpd_init_work(dev_priv);
|
|
|
|
INIT_WORK(&rps->work, gen6_pm_rps_work);
|
|
|
|
INIT_WORK(&dev_priv->l3_parity.error_work, ivybridge_parity_work);
|
|
for (i = 0; i < MAX_L3_SLICES; ++i)
|
|
dev_priv->l3_parity.remap_info[i] = NULL;
|
|
|
|
if (HAS_GUC_SCHED(dev_priv))
|
|
dev_priv->pm_guc_events = GEN9_GUC_TO_HOST_INT_EVENT;
|
|
|
|
/* Let's track the enabled rps events */
|
|
if (IS_VALLEYVIEW(dev_priv))
|
|
/* WaGsvRC0ResidencyMethod:vlv */
|
|
dev_priv->pm_rps_events = GEN6_PM_RP_UP_EI_EXPIRED;
|
|
else
|
|
dev_priv->pm_rps_events = GEN6_PM_RPS_EVENTS;
|
|
|
|
rps->pm_intrmsk_mbz = 0;
|
|
|
|
/*
|
|
* SNB,IVB,HSW can while VLV,CHV may hard hang on looping batchbuffer
|
|
* if GEN6_PM_UP_EI_EXPIRED is masked.
|
|
*
|
|
* TODO: verify if this can be reproduced on VLV,CHV.
|
|
*/
|
|
if (INTEL_GEN(dev_priv) <= 7)
|
|
rps->pm_intrmsk_mbz |= GEN6_PM_RP_UP_EI_EXPIRED;
|
|
|
|
if (INTEL_GEN(dev_priv) >= 8)
|
|
rps->pm_intrmsk_mbz |= GEN8_PMINTR_DISABLE_REDIRECT_TO_GUC;
|
|
|
|
if (IS_GEN2(dev_priv)) {
|
|
/* Gen2 doesn't have a hardware frame counter */
|
|
dev->max_vblank_count = 0;
|
|
} else if (IS_G4X(dev_priv) || INTEL_GEN(dev_priv) >= 5) {
|
|
dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
|
|
dev->driver->get_vblank_counter = g4x_get_vblank_counter;
|
|
} else {
|
|
dev->driver->get_vblank_counter = i915_get_vblank_counter;
|
|
dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
|
|
}
|
|
|
|
/*
|
|
* Opt out of the vblank disable timer on everything except gen2.
|
|
* Gen2 doesn't have a hardware frame counter and so depends on
|
|
* vblank interrupts to produce sane vblank seuquence numbers.
|
|
*/
|
|
if (!IS_GEN2(dev_priv))
|
|
dev->vblank_disable_immediate = true;
|
|
|
|
/* Most platforms treat the display irq block as an always-on
|
|
* power domain. vlv/chv can disable it at runtime and need
|
|
* special care to avoid writing any of the display block registers
|
|
* outside of the power domain. We defer setting up the display irqs
|
|
* in this case to the runtime pm.
|
|
*/
|
|
dev_priv->display_irqs_enabled = true;
|
|
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
|
|
dev_priv->display_irqs_enabled = false;
|
|
|
|
dev_priv->hotplug.hpd_storm_threshold = HPD_STORM_DEFAULT_THRESHOLD;
|
|
|
|
dev->driver->get_vblank_timestamp = drm_calc_vbltimestamp_from_scanoutpos;
|
|
dev->driver->get_scanout_position = i915_get_crtc_scanoutpos;
|
|
|
|
if (IS_CHERRYVIEW(dev_priv)) {
|
|
dev->driver->irq_handler = cherryview_irq_handler;
|
|
dev->driver->irq_preinstall = cherryview_irq_reset;
|
|
dev->driver->irq_postinstall = cherryview_irq_postinstall;
|
|
dev->driver->irq_uninstall = cherryview_irq_reset;
|
|
dev->driver->enable_vblank = i965_enable_vblank;
|
|
dev->driver->disable_vblank = i965_disable_vblank;
|
|
dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup;
|
|
} else if (IS_VALLEYVIEW(dev_priv)) {
|
|
dev->driver->irq_handler = valleyview_irq_handler;
|
|
dev->driver->irq_preinstall = valleyview_irq_reset;
|
|
dev->driver->irq_postinstall = valleyview_irq_postinstall;
|
|
dev->driver->irq_uninstall = valleyview_irq_reset;
|
|
dev->driver->enable_vblank = i965_enable_vblank;
|
|
dev->driver->disable_vblank = i965_disable_vblank;
|
|
dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup;
|
|
} else if (INTEL_GEN(dev_priv) >= 11) {
|
|
dev->driver->irq_handler = gen11_irq_handler;
|
|
dev->driver->irq_preinstall = gen11_irq_reset;
|
|
dev->driver->irq_postinstall = gen11_irq_postinstall;
|
|
dev->driver->irq_uninstall = gen11_irq_reset;
|
|
dev->driver->enable_vblank = gen8_enable_vblank;
|
|
dev->driver->disable_vblank = gen8_disable_vblank;
|
|
dev_priv->display.hpd_irq_setup = spt_hpd_irq_setup;
|
|
} else if (INTEL_GEN(dev_priv) >= 8) {
|
|
dev->driver->irq_handler = gen8_irq_handler;
|
|
dev->driver->irq_preinstall = gen8_irq_reset;
|
|
dev->driver->irq_postinstall = gen8_irq_postinstall;
|
|
dev->driver->irq_uninstall = gen8_irq_reset;
|
|
dev->driver->enable_vblank = gen8_enable_vblank;
|
|
dev->driver->disable_vblank = gen8_disable_vblank;
|
|
if (IS_GEN9_LP(dev_priv))
|
|
dev_priv->display.hpd_irq_setup = bxt_hpd_irq_setup;
|
|
else if (HAS_PCH_SPT(dev_priv) || HAS_PCH_KBP(dev_priv) ||
|
|
HAS_PCH_CNP(dev_priv))
|
|
dev_priv->display.hpd_irq_setup = spt_hpd_irq_setup;
|
|
else
|
|
dev_priv->display.hpd_irq_setup = ilk_hpd_irq_setup;
|
|
} else if (HAS_PCH_SPLIT(dev_priv)) {
|
|
dev->driver->irq_handler = ironlake_irq_handler;
|
|
dev->driver->irq_preinstall = ironlake_irq_reset;
|
|
dev->driver->irq_postinstall = ironlake_irq_postinstall;
|
|
dev->driver->irq_uninstall = ironlake_irq_reset;
|
|
dev->driver->enable_vblank = ironlake_enable_vblank;
|
|
dev->driver->disable_vblank = ironlake_disable_vblank;
|
|
dev_priv->display.hpd_irq_setup = ilk_hpd_irq_setup;
|
|
} else {
|
|
if (IS_GEN2(dev_priv)) {
|
|
dev->driver->irq_preinstall = i8xx_irq_reset;
|
|
dev->driver->irq_postinstall = i8xx_irq_postinstall;
|
|
dev->driver->irq_handler = i8xx_irq_handler;
|
|
dev->driver->irq_uninstall = i8xx_irq_reset;
|
|
dev->driver->enable_vblank = i8xx_enable_vblank;
|
|
dev->driver->disable_vblank = i8xx_disable_vblank;
|
|
} else if (IS_GEN3(dev_priv)) {
|
|
dev->driver->irq_preinstall = i915_irq_reset;
|
|
dev->driver->irq_postinstall = i915_irq_postinstall;
|
|
dev->driver->irq_uninstall = i915_irq_reset;
|
|
dev->driver->irq_handler = i915_irq_handler;
|
|
dev->driver->enable_vblank = i8xx_enable_vblank;
|
|
dev->driver->disable_vblank = i8xx_disable_vblank;
|
|
} else {
|
|
dev->driver->irq_preinstall = i965_irq_reset;
|
|
dev->driver->irq_postinstall = i965_irq_postinstall;
|
|
dev->driver->irq_uninstall = i965_irq_reset;
|
|
dev->driver->irq_handler = i965_irq_handler;
|
|
dev->driver->enable_vblank = i965_enable_vblank;
|
|
dev->driver->disable_vblank = i965_disable_vblank;
|
|
}
|
|
if (I915_HAS_HOTPLUG(dev_priv))
|
|
dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* intel_irq_fini - deinitializes IRQ support
|
|
* @i915: i915 device instance
|
|
*
|
|
* This function deinitializes all the IRQ support.
|
|
*/
|
|
void intel_irq_fini(struct drm_i915_private *i915)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < MAX_L3_SLICES; ++i)
|
|
kfree(i915->l3_parity.remap_info[i]);
|
|
}
|
|
|
|
/**
|
|
* intel_irq_install - enables the hardware interrupt
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* This function enables the hardware interrupt handling, but leaves the hotplug
|
|
* handling still disabled. It is called after intel_irq_init().
|
|
*
|
|
* In the driver load and resume code we need working interrupts in a few places
|
|
* but don't want to deal with the hassle of concurrent probe and hotplug
|
|
* workers. Hence the split into this two-stage approach.
|
|
*/
|
|
int intel_irq_install(struct drm_i915_private *dev_priv)
|
|
{
|
|
/*
|
|
* We enable some interrupt sources in our postinstall hooks, so mark
|
|
* interrupts as enabled _before_ actually enabling them to avoid
|
|
* special cases in our ordering checks.
|
|
*/
|
|
dev_priv->runtime_pm.irqs_enabled = true;
|
|
|
|
return drm_irq_install(&dev_priv->drm, dev_priv->drm.pdev->irq);
|
|
}
|
|
|
|
/**
|
|
* intel_irq_uninstall - finilizes all irq handling
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* This stops interrupt and hotplug handling and unregisters and frees all
|
|
* resources acquired in the init functions.
|
|
*/
|
|
void intel_irq_uninstall(struct drm_i915_private *dev_priv)
|
|
{
|
|
drm_irq_uninstall(&dev_priv->drm);
|
|
intel_hpd_cancel_work(dev_priv);
|
|
dev_priv->runtime_pm.irqs_enabled = false;
|
|
}
|
|
|
|
/**
|
|
* intel_runtime_pm_disable_interrupts - runtime interrupt disabling
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* This function is used to disable interrupts at runtime, both in the runtime
|
|
* pm and the system suspend/resume code.
|
|
*/
|
|
void intel_runtime_pm_disable_interrupts(struct drm_i915_private *dev_priv)
|
|
{
|
|
dev_priv->drm.driver->irq_uninstall(&dev_priv->drm);
|
|
dev_priv->runtime_pm.irqs_enabled = false;
|
|
synchronize_irq(dev_priv->drm.irq);
|
|
}
|
|
|
|
/**
|
|
* intel_runtime_pm_enable_interrupts - runtime interrupt enabling
|
|
* @dev_priv: i915 device instance
|
|
*
|
|
* This function is used to enable interrupts at runtime, both in the runtime
|
|
* pm and the system suspend/resume code.
|
|
*/
|
|
void intel_runtime_pm_enable_interrupts(struct drm_i915_private *dev_priv)
|
|
{
|
|
dev_priv->runtime_pm.irqs_enabled = true;
|
|
dev_priv->drm.driver->irq_preinstall(&dev_priv->drm);
|
|
dev_priv->drm.driver->irq_postinstall(&dev_priv->drm);
|
|
}
|