2014-02-28 14:15 GMT-03:00 Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>:
> On Thu, 27 Feb 2014 19:26:46 -0300
> Paulo Zanoni <przanoni@xxxxxxxxx> wrote:
>
>> From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
>>
>> When other platforms add runtime PM support they will also need to
>> disable interrupts, so move the variable to the runtime PM struct.
>>
>> v2: - Rebase.
>> v3: - Rebase.
>>
>> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
>> ---
>> drivers/gpu/drm/i915/i915_debugfs.c | 2 +-
>> drivers/gpu/drm/i915/i915_drv.h | 10 +++----
>> drivers/gpu/drm/i915/i915_gem.c | 2 +-
>> drivers/gpu/drm/i915/i915_irq.c | 58 ++++++++++++++++++------------------
>> drivers/gpu/drm/i915/intel_display.c | 4 +--
>> drivers/gpu/drm/i915/intel_drv.h | 4 +--
>> drivers/gpu/drm/i915/intel_pm.c | 3 +-
>> 7 files changed, 42 insertions(+), 41 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
>> index 93d6065..213b093 100644
>> --- a/drivers/gpu/drm/i915/i915_debugfs.c
>> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
>> @@ -1999,7 +1999,7 @@ static int i915_pc8_status(struct seq_file *m, void *unused)
>> mutex_lock(&dev_priv->pc8.lock);
>> seq_printf(m, "GPU idle: %s\n", yesno(!dev_priv->mm.busy));
>> seq_printf(m, "IRQs disabled: %s\n",
>> - yesno(dev_priv->pc8.irqs_disabled));
>> + yesno(dev_priv->pm.irqs_disabled));
>> mutex_unlock(&dev_priv->pc8.lock);
>>
>> return 0;
>> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
>> index 16e344e..74fba1c 100644
>> --- a/drivers/gpu/drm/i915/i915_drv.h
>> +++ b/drivers/gpu/drm/i915/i915_drv.h
>> @@ -1350,8 +1350,12 @@ struct ilk_wm_values {
>> * For more, read "Display Sequences for Package C8" on our documentation.
>> */
>> struct i915_package_c8 {
>> - bool irqs_disabled;
>> struct mutex lock;
>> +};
>> +
>> +struct i915_runtime_pm {
>> + bool suspended;
>> + bool irqs_disabled;
>>
>> struct {
>> uint32_t deimr;
>> @@ -1362,10 +1366,6 @@ struct i915_package_c8 {
>> } regsave;
>> };
>>
>> -struct i915_runtime_pm {
>> - bool suspended;
>> -};
>> -
>> enum intel_pipe_crc_source {
>> INTEL_PIPE_CRC_SOURCE_NONE,
>> INTEL_PIPE_CRC_SOURCE_PLANE1,
>> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
>> index 6978e69..998dabe 100644
>> --- a/drivers/gpu/drm/i915/i915_gem.c
>> +++ b/drivers/gpu/drm/i915/i915_gem.c
>> @@ -1017,7 +1017,7 @@ static int __wait_seqno(struct intel_ring_buffer *ring, u32 seqno,
>> unsigned long timeout_expire;
>> int ret;
>>
>> - WARN(dev_priv->pc8.irqs_disabled, "IRQs disabled\n");
>> + WARN(dev_priv->pm.irqs_disabled, "IRQs disabled\n");
>>
>> if (i915_seqno_passed(ring->get_seqno(ring, true), seqno))
>> return 0;
>> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
>> index f68aee3..14b26f2 100644
>> --- a/drivers/gpu/drm/i915/i915_irq.c
>> +++ b/drivers/gpu/drm/i915/i915_irq.c
>> @@ -86,9 +86,9 @@ ironlake_enable_display_irq(drm_i915_private_t *dev_priv, u32 mask)
>> {
>> assert_spin_locked(&dev_priv->irq_lock);
>>
>> - if (dev_priv->pc8.irqs_disabled) {
>> + if (dev_priv->pm.irqs_disabled) {
>> WARN(1, "IRQs disabled\n");
>> - dev_priv->pc8.regsave.deimr &= ~mask;
>> + dev_priv->pm.regsave.deimr &= ~mask;
>> return;
>> }
>>
>> @@ -104,9 +104,9 @@ ironlake_disable_display_irq(drm_i915_private_t *dev_priv, u32 mask)
>> {
>> assert_spin_locked(&dev_priv->irq_lock);
>>
>> - if (dev_priv->pc8.irqs_disabled) {
>> + if (dev_priv->pm.irqs_disabled) {
>> WARN(1, "IRQs disabled\n");
>> - dev_priv->pc8.regsave.deimr |= mask;
>> + dev_priv->pm.regsave.deimr |= mask;
>> return;
>> }
>>
>> @@ -129,10 +129,10 @@ static void ilk_update_gt_irq(struct drm_i915_private *dev_priv,
>> {
>> assert_spin_locked(&dev_priv->irq_lock);
>>
>> - if (dev_priv->pc8.irqs_disabled) {
>> + if (dev_priv->pm.irqs_disabled) {
>> WARN(1, "IRQs disabled\n");
>> - dev_priv->pc8.regsave.gtimr &= ~interrupt_mask;
>> - dev_priv->pc8.regsave.gtimr |= (~enabled_irq_mask &
>> + dev_priv->pm.regsave.gtimr &= ~interrupt_mask;
>> + dev_priv->pm.regsave.gtimr |= (~enabled_irq_mask &
>> interrupt_mask);
>> return;
>> }
>> @@ -167,10 +167,10 @@ static void snb_update_pm_irq(struct drm_i915_private *dev_priv,
>>
>> assert_spin_locked(&dev_priv->irq_lock);
>>
>> - if (dev_priv->pc8.irqs_disabled) {
>> + if (dev_priv->pm.irqs_disabled) {
>> WARN(1, "IRQs disabled\n");
>> - dev_priv->pc8.regsave.gen6_pmimr &= ~interrupt_mask;
>> - dev_priv->pc8.regsave.gen6_pmimr |= (~enabled_irq_mask &
>> + dev_priv->pm.regsave.gen6_pmimr &= ~interrupt_mask;
>> + dev_priv->pm.regsave.gen6_pmimr |= (~enabled_irq_mask &
>> interrupt_mask);
>> return;
>> }
>> @@ -313,11 +313,11 @@ static void ibx_display_interrupt_update(struct drm_i915_private *dev_priv,
>>
>> assert_spin_locked(&dev_priv->irq_lock);
>>
>> - if (dev_priv->pc8.irqs_disabled &&
>> + if (dev_priv->pm.irqs_disabled &&
>> (interrupt_mask & SDE_HOTPLUG_MASK_CPT)) {
>> WARN(1, "IRQs disabled\n");
>> - dev_priv->pc8.regsave.sdeimr &= ~interrupt_mask;
>> - dev_priv->pc8.regsave.sdeimr |= (~enabled_irq_mask &
>> + dev_priv->pm.regsave.sdeimr &= ~interrupt_mask;
>> + dev_priv->pm.regsave.sdeimr |= (~enabled_irq_mask &
>> interrupt_mask);
>> return;
>> }
>> @@ -4016,32 +4016,32 @@ void intel_hpd_init(struct drm_device *dev)
>> spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
>> }
>>
>> -/* Disable interrupts so we can allow Package C8+. */
>> -void hsw_pc8_disable_interrupts(struct drm_device *dev)
>> +/* Disable interrupts so we can allow runtime PM. */
>> +void hsw_runtime_pm_disable_interrupts(struct drm_device *dev)
>> {
>> struct drm_i915_private *dev_priv = dev->dev_private;
>> unsigned long irqflags;
>>
>> spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
>>
>> - dev_priv->pc8.regsave.deimr = I915_READ(DEIMR);
>> - dev_priv->pc8.regsave.sdeimr = I915_READ(SDEIMR);
>> - dev_priv->pc8.regsave.gtimr = I915_READ(GTIMR);
>> - dev_priv->pc8.regsave.gtier = I915_READ(GTIER);
>> - dev_priv->pc8.regsave.gen6_pmimr = I915_READ(GEN6_PMIMR);
>> + dev_priv->pm.regsave.deimr = I915_READ(DEIMR);
>> + dev_priv->pm.regsave.sdeimr = I915_READ(SDEIMR);
>> + dev_priv->pm.regsave.gtimr = I915_READ(GTIMR);
>> + dev_priv->pm.regsave.gtier = I915_READ(GTIER);
>> + dev_priv->pm.regsave.gen6_pmimr = I915_READ(GEN6_PMIMR);
>>
>> ironlake_disable_display_irq(dev_priv, 0xffffffff);
>> ibx_disable_display_interrupt(dev_priv, 0xffffffff);
>> ilk_disable_gt_irq(dev_priv, 0xffffffff);
>> snb_disable_pm_irq(dev_priv, 0xffffffff);
>>
>> - dev_priv->pc8.irqs_disabled = true;
>> + dev_priv->pm.irqs_disabled = true;
>>
>> spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
>> }
>>
>> -/* Restore interrupts so we can recover from Package C8+. */
>> -void hsw_pc8_restore_interrupts(struct drm_device *dev)
>> +/* Restore interrupts so we can recover from runtime PM. */
>> +void hsw_runtime_pm_restore_interrupts(struct drm_device *dev)
>> {
>> struct drm_i915_private *dev_priv = dev->dev_private;
>> unsigned long irqflags;
>> @@ -4061,13 +4061,13 @@ void hsw_pc8_restore_interrupts(struct drm_device *dev)
>> val = I915_READ(GEN6_PMIMR);
>> WARN(val != 0xffffffff, "GEN6_PMIMR is 0x%08x\n", val);
>>
>> - dev_priv->pc8.irqs_disabled = false;
>> + dev_priv->pm.irqs_disabled = false;
>>
>> - ironlake_enable_display_irq(dev_priv, ~dev_priv->pc8.regsave.deimr);
>> - ibx_enable_display_interrupt(dev_priv, ~dev_priv->pc8.regsave.sdeimr);
>> - ilk_enable_gt_irq(dev_priv, ~dev_priv->pc8.regsave.gtimr);
>> - snb_enable_pm_irq(dev_priv, ~dev_priv->pc8.regsave.gen6_pmimr);
>> - I915_WRITE(GTIER, dev_priv->pc8.regsave.gtier);
>> + ironlake_enable_display_irq(dev_priv, ~dev_priv->pm.regsave.deimr);
>> + ibx_enable_display_interrupt(dev_priv, ~dev_priv->pm.regsave.sdeimr);
>> + ilk_enable_gt_irq(dev_priv, ~dev_priv->pm.regsave.gtimr);
>> + snb_enable_pm_irq(dev_priv, ~dev_priv->pm.regsave.gen6_pmimr);
>> + I915_WRITE(GTIER, dev_priv->pm.regsave.gtier);
>>
>> spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
>> }
>> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
>> index 271dd66..420fad5 100644
>> --- a/drivers/gpu/drm/i915/intel_display.c
>> +++ b/drivers/gpu/drm/i915/intel_display.c
>> @@ -6667,7 +6667,7 @@ void __hsw_do_enable_pc8(struct drm_i915_private *dev_priv)
>> }
>>
>> lpt_disable_clkout_dp(dev);
>> - hsw_pc8_disable_interrupts(dev);
>> + hsw_runtime_pm_disable_interrupts(dev);
>> hsw_disable_lcpll(dev_priv, true, true);
>> }
>>
>> @@ -6681,7 +6681,7 @@ void __hsw_do_disable_pc8(struct drm_i915_private *dev_priv)
>> DRM_DEBUG_KMS("Disabling package C8+\n");
>>
>> hsw_restore_lcpll(dev_priv);
>> - hsw_pc8_restore_interrupts(dev);
>> + hsw_runtime_pm_restore_interrupts(dev);
>> lpt_init_pch_refclk(dev);
>>
>> if (dev_priv->pch_id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
>> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
>> index 2c02d68..d0434e8 100644
>> --- a/drivers/gpu/drm/i915/intel_drv.h
>> +++ b/drivers/gpu/drm/i915/intel_drv.h
>> @@ -616,8 +616,8 @@ void ilk_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
>> void ilk_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
>> void snb_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
>> void snb_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
>> -void hsw_pc8_disable_interrupts(struct drm_device *dev);
>> -void hsw_pc8_restore_interrupts(struct drm_device *dev);
>> +void hsw_runtime_pm_disable_interrupts(struct drm_device *dev);
>> +void hsw_runtime_pm_restore_interrupts(struct drm_device *dev);
>>
>>
>> /* intel_crt.c */
>> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
>> index c85507a..5ff4b59 100644
>> --- a/drivers/gpu/drm/i915/intel_pm.c
>> +++ b/drivers/gpu/drm/i915/intel_pm.c
>> @@ -5770,7 +5770,8 @@ void intel_pm_setup(struct drm_device *dev)
>> mutex_init(&dev_priv->rps.hw_lock);
>>
>> mutex_init(&dev_priv->pc8.lock);
>> - dev_priv->pc8.irqs_disabled = false;
>> INIT_DELAYED_WORK(&dev_priv->rps.delayed_resume_work,
>> intel_gen6_powersave_work);
>> +
>> + dev_priv->pm.irqs_disabled = false;
>> }
>
> I wonder if we should eventually not bother with saving/restoring the
> interrupt state and do a full re-init like we'll have to in the display
> power well case. But that's a separate issue really...
That's the plan. See this:
http://cgit.freedesktop.org/~pzanoni/linux/commit/?h=bdw-runtime-pm-2014-02-26&id=843563a642b5471053cb86f631872e02b27de45d
>
> Reviewed-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
>
> --
> Jesse Barnes, Intel Open Source Technology Center
--
Paulo Zanoni
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