[Intel-gfx] [PATCH 1/3] drm/i915: Make i915_gem_load_power_context take struct intel_gt

[Tvrtko Ursulin]

On 16/10/2019 13:42, Chris Wilson wrote:
> Quoting Tvrtko Ursulin (2019-10-16 13:25:55)
>> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
>>
>> The code underneath works on intel_gt and also rename to
>> i915_gem_load_gt_power_context to signify it is operating on GT.
>>
>> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
>> Cc: Chris Wilson <chris at chris-wilson.co.uk>
>> ---
>>   drivers/gpu/drm/i915/gem/i915_gem_pm.c | 24 +++++++++++++-----------
>>   drivers/gpu/drm/i915/gem/i915_gem_pm.h |  3 ++-
>>   drivers/gpu/drm/i915/i915_gem.c        |  2 +-
>>   3 files changed, 16 insertions(+), 13 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pm.c b/drivers/gpu/drm/i915/gem/i915_gem_pm.c
>> index 7987b54fb1f5..b2c18674c455 100644
>> --- a/drivers/gpu/drm/i915/gem/i915_gem_pm.c
>> +++ b/drivers/gpu/drm/i915/gem/i915_gem_pm.c
>> @@ -56,9 +56,9 @@ static bool switch_to_kernel_context_sync(struct intel_gt *gt)
>>          return result;
>>   }
>>   
>> -bool i915_gem_load_power_context(struct drm_i915_private *i915)
>> +bool i915_gem_load_gt_power_context(struct intel_gt *gt)
>>   {
>> -       return switch_to_kernel_context_sync(&i915->gt);
>> +       return switch_to_kernel_context_sync(gt);
>>   }
>>   
>>   static void user_forcewake(struct intel_gt *gt, bool suspend)
>> @@ -172,11 +172,13 @@ void i915_gem_suspend_late(struct drm_i915_private *i915)
>>   
>>   void i915_gem_resume(struct drm_i915_private *i915)
>>   {
>> +       struct intel_gt *gt = &i915->gt;
>> +
>>          GEM_TRACE("\n");
>>   
>> -       intel_uncore_forcewake_get(&i915->uncore, FORCEWAKE_ALL);
>> +       intel_uncore_forcewake_get(gt->uncore, FORCEWAKE_ALL);
>>   
>> -       if (intel_gt_init_hw(&i915->gt))
>> +       if (intel_gt_init_hw(gt))
>>                  goto err_wedged;
>>   
>>          /*
>> @@ -184,26 +186,26 @@ void i915_gem_resume(struct drm_i915_private *i915)
>>           * guarantee that the context image is complete. So let's just reset
>>           * it and start again.
>>           */
>> -       if (intel_gt_resume(&i915->gt))
>> +       if (intel_gt_resume(gt))
>>                  goto err_wedged;
>>   
>> -       intel_uc_resume(&i915->gt.uc);
>> +       intel_uc_resume(&gt->uc);
>>   
>>          /* Always reload a context for powersaving. */
>> -       if (!i915_gem_load_power_context(i915))
>> +       if (!i915_gem_load_gt_power_context(gt))
>>                  goto err_wedged;
>>   
>> -       user_forcewake(&i915->gt, false);
>> +       user_forcewake(gt, false);
>>   
>>   out_unlock:
>> -       intel_uncore_forcewake_put(&i915->uncore, FORCEWAKE_ALL);
>> +       intel_uncore_forcewake_put(gt->uncore, FORCEWAKE_ALL);
>>          return;
>>   
>>   err_wedged:
>> -       if (!intel_gt_is_wedged(&i915->gt)) {
>> +       if (!intel_gt_is_wedged(gt)) {
>>                  dev_err(i915->drm.dev,
>>                          "Failed to re-initialize GPU, declaring it wedged!\n");
>> -               intel_gt_set_wedged(&i915->gt);
>> +               intel_gt_set_wedged(gt);
>>          }
>>          goto out_unlock;
>>   }
>> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pm.h b/drivers/gpu/drm/i915/gem/i915_gem_pm.h
>> index 6f7d5d11ac3b..38eace4cb6ba 100644
>> --- a/drivers/gpu/drm/i915/gem/i915_gem_pm.h
>> +++ b/drivers/gpu/drm/i915/gem/i915_gem_pm.h
>> @@ -10,11 +10,12 @@
>>   #include <linux/types.h>
>>   
>>   struct drm_i915_private;
>> +struct intel_gt;
>>   struct work_struct;
>>   
>>   void i915_gem_init__pm(struct drm_i915_private *i915);
>>   
>> -bool i915_gem_load_power_context(struct drm_i915_private *i915);
>> +bool i915_gem_load_gt_power_context(struct intel_gt *gt);
>>   void i915_gem_resume(struct drm_i915_private *i915);
>>   
>>   void i915_gem_idle_work_handler(struct work_struct *work);
>> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
>> index 0ddbd3a5fb8d..c4ebc21c6820 100644
>> --- a/drivers/gpu/drm/i915/i915_gem.c
>> +++ b/drivers/gpu/drm/i915/i915_gem.c
>> @@ -1132,7 +1132,7 @@ static int __intel_engines_record_defaults(struct drm_i915_private *i915)
>>          }
>>   
>>          /* Flush the default context image to memory, and enable powersaving. */
>> -       if (!i915_gem_load_power_context(i915)) {
>> +       if (!i915_gem_load_gt_power_context(&i915->gt)) {
>>                  err = -EIO;
>>                  goto out;
>>          }
> 
> Not quite, the plan is to move this all to the gt. Paging Andi, come in
> Andi!

Have you copied him? :) I now have.

I don't have any complaints there - but can it be done quickly?

Regards,

Tvrtko