diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gem/i915_gem_mman.c')
-rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_mman.c | 84 |
1 files changed, 31 insertions, 53 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c index 05289edbafe3..e3002849844b 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c @@ -8,6 +8,7 @@ #include <linux/sizes.h> #include "gt/intel_gt.h" +#include "gt/intel_gt_requests.h" #include "i915_drv.h" #include "i915_gem_gtt.h" @@ -249,16 +250,6 @@ vm_fault_t i915_gem_fault(struct vm_fault *vmf) if (ret) goto err_rpm; - ret = i915_mutex_lock_interruptible(dev); - if (ret) - goto err_reset; - - /* Access to snoopable pages through the GTT is incoherent. */ - if (obj->cache_level != I915_CACHE_NONE && !HAS_LLC(i915)) { - ret = -EFAULT; - goto err_unlock; - } - /* Now pin it into the GTT as needed */ vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE | @@ -285,10 +276,19 @@ vm_fault_t i915_gem_fault(struct vm_fault *vmf) view.type = I915_GGTT_VIEW_PARTIAL; vma = i915_gem_object_ggtt_pin(obj, &view, 0, 0, flags); } + + /* The entire mappable GGTT is pinned? Unexpected! */ + GEM_BUG_ON(vma == ERR_PTR(-ENOSPC)); } if (IS_ERR(vma)) { ret = PTR_ERR(vma); - goto err_unlock; + goto err_reset; + } + + /* Access to snoopable pages through the GTT is incoherent. */ + if (obj->cache_level != I915_CACHE_NONE && !HAS_LLC(i915)) { + ret = -EFAULT; + goto err_unpin; } ret = i915_vma_pin_fence(vma); @@ -312,7 +312,7 @@ vm_fault_t i915_gem_fault(struct vm_fault *vmf) list_add(&obj->userfault_link, &i915->ggtt.userfault_list); mutex_unlock(&i915->ggtt.vm.mutex); - if (CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND) + if (IS_ACTIVE(CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND)) intel_wakeref_auto(&i915->ggtt.userfault_wakeref, msecs_to_jiffies_timeout(CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND)); @@ -326,8 +326,6 @@ err_fence: i915_vma_unpin_fence(vma); err_unpin: __i915_vma_unpin(vma); -err_unlock: - mutex_unlock(&dev->struct_mutex); err_reset: intel_gt_reset_unlock(ggtt->vm.gt, srcu); err_rpm: @@ -335,23 +333,20 @@ err_rpm: i915_gem_object_unpin_pages(obj); err: switch (ret) { - case -EIO: - /* - * We eat errors when the gpu is terminally wedged to avoid - * userspace unduly crashing (gl has no provisions for mmaps to - * fail). But any other -EIO isn't ours (e.g. swap in failure) - * and so needs to be reported. - */ - if (!intel_gt_is_wedged(ggtt->vm.gt)) - return VM_FAULT_SIGBUS; - /* else, fall through */ - case -EAGAIN: - /* - * EAGAIN means the gpu is hung and we'll wait for the error - * handler to reset everything when re-faulting in - * i915_mutex_lock_interruptible. - */ + default: + WARN_ONCE(ret, "unhandled error in %s: %i\n", __func__, ret); + /* fallthrough */ + case -EIO: /* shmemfs failure from swap device */ + case -EFAULT: /* purged object */ + case -ENODEV: /* bad object, how did you get here! */ + return VM_FAULT_SIGBUS; + + case -ENOSPC: /* shmemfs allocation failure */ + case -ENOMEM: /* our allocation failure */ + return VM_FAULT_OOM; + case 0: + case -EAGAIN: case -ERESTARTSYS: case -EINTR: case -EBUSY: @@ -360,15 +355,6 @@ err: * already did the job. */ return VM_FAULT_NOPAGE; - case -ENOMEM: - return VM_FAULT_OOM; - case -ENOSPC: - case -EFAULT: - case -ENODEV: /* bad object, how did you get here! */ - return VM_FAULT_SIGBUS; - default: - WARN_ONCE(ret, "unhandled error in %s: %i\n", __func__, ret); - return VM_FAULT_SIGBUS; } } @@ -439,6 +425,7 @@ out: static int create_mmap_offset(struct drm_i915_gem_object *obj) { struct drm_i915_private *i915 = to_i915(obj->base.dev); + struct intel_gt *gt = &i915->gt; int err; err = drm_gem_create_mmap_offset(&obj->base); @@ -446,21 +433,12 @@ static int create_mmap_offset(struct drm_i915_gem_object *obj) return 0; /* Attempt to reap some mmap space from dead objects */ - do { - err = i915_gem_wait_for_idle(i915, - I915_WAIT_INTERRUPTIBLE, - MAX_SCHEDULE_TIMEOUT); - if (err) - break; - - i915_gem_drain_freed_objects(i915); - err = drm_gem_create_mmap_offset(&obj->base); - if (!err) - break; - - } while (flush_delayed_work(&i915->gem.retire_work)); + err = intel_gt_retire_requests_timeout(gt, MAX_SCHEDULE_TIMEOUT); + if (err) + return err; - return err; + i915_gem_drain_freed_objects(i915); + return drm_gem_create_mmap_offset(&obj->base); } int |