diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_gt_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_gt_pm.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_pm.c index 1679f4f78d65..11661de8c40b 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_pm.c +++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.c @@ -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(>->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(>->wakeref.count)); + atomic_sub(count, >->wakeref.count); + } else { + atomic_add(count, >->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(>->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); |
