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drm/i915/gt: Move user_forcewake application to GT 

We already track the debugfs user_forcewake on the GT, so it is natural
to pull the suspend/resume handling under gt/ as well.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101141009.15581-3-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-11-01 14:10:08 +00:00
parent c8f6cfc56f
commit 9ab3fe2d7d
2 changed files with 22 additions and 22 deletions
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22
drivers/gpu/drm/i915/gem/i915_gem_pm.c
View File

@ -11,24 +11,6 @@
#include "i915_drv.h"
static void user_forcewake(struct intel_gt *gt, bool suspend)
{
int count = atomic_read(&gt->user_wakeref);
/* Inside suspend/resume so single threaded, no races to worry about. */
if (likely(!count))
return;
intel_gt_pm_get(gt);
if (suspend) {
GEM_BUG_ON(count > atomic_read(&gt->wakeref.count));
atomic_sub(count, &gt->wakeref.count);
} else {
atomic_add(count, &gt->wakeref.count);
}
intel_gt_pm_put(gt);
}
void i915_gem_suspend(struct drm_i915_private *i915)
{
GEM_TRACE("\n");
@ -36,8 +18,6 @@ void i915_gem_suspend(struct drm_i915_private *i915)
intel_wakeref_auto(&i915->ggtt.userfault_wakeref, 0);
flush_workqueue(i915->wq);
user_forcewake(&i915->gt, true);
/*
* We have to flush all the executing contexts to main memory so
* that they can saved in the hibernation image. To ensure the last
@ -132,8 +112,6 @@ void i915_gem_resume(struct drm_i915_private *i915)
if (intel_gt_resume(&i915->gt))
goto err_wedged;
user_forcewake(&i915->gt, false);
out_unlock:
intel_uncore_forcewake_put(&i915->uncore, FORCEWAKE_ALL);
return;

22
drivers/gpu/drm/i915/gt/intel_gt_pm.c
View File

@ -18,6 +18,24 @@
#include "intel_rps.h"
#include "intel_wakeref.h"
static void user_forcewake(struct intel_gt *gt, bool suspend)
{
int count = atomic_read(&gt->user_wakeref);
/* Inside suspend/resume so single threaded, no races to worry about. */
if (likely(!count))
return;
intel_gt_pm_get(gt);
if (suspend) {
GEM_BUG_ON(count > atomic_read(&gt->wakeref.count));
atomic_sub(count, &gt->wakeref.count);
} else {
atomic_add(count, &gt->wakeref.count);
}
intel_gt_pm_put(gt);
}
static int __gt_unpark(struct intel_wakeref *wf)
{
struct intel_gt *gt = container_of(wf, typeof(*gt), wakeref);
@ -210,6 +228,8 @@ int intel_gt_resume(struct intel_gt *gt)
intel_uc_resume(&gt->uc);
user_forcewake(gt, false);
intel_uncore_forcewake_put(gt->uncore, FORCEWAKE_ALL);
intel_gt_pm_put(gt);
@ -233,6 +253,8 @@ void intel_gt_suspend(struct intel_gt *gt)
{
intel_wakeref_t wakeref;
user_forcewake(gt, true);
/* We expect to be idle already; but also want to be independent */
wait_for_idle(gt);