In the ucode functions, the calls are done before userspace runs, when debugging using debugfs, or when creating semi-permanent mappings; we can safely use the unlocked versions that does the ww dance for us.
Because there is no pin_pages_unlocked yet, add it as convenience function.
This removes possible lockdep splats about missing resv lock for ucode.
Signed-off-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com Reviewed-by: Thomas Hellström thomas.hellstrom@linux.intel.com --- drivers/gpu/drm/i915/gem/i915_gem_object.h | 2 ++ drivers/gpu/drm/i915/gem/i915_gem_pages.c | 20 ++++++++++++++++++++ drivers/gpu/drm/i915/gt/uc/intel_guc.c | 2 +- drivers/gpu/drm/i915/gt/uc/intel_guc_log.c | 4 ++-- drivers/gpu/drm/i915/gt/uc/intel_huc.c | 2 +- drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c | 2 +- 6 files changed, 27 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h index 74de195b57de..5fffa6f07560 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h @@ -392,6 +392,8 @@ i915_gem_object_pin_pages(struct drm_i915_gem_object *obj) return __i915_gem_object_get_pages(obj); }
+int i915_gem_object_pin_pages_unlocked(struct drm_i915_gem_object *obj); + static inline bool i915_gem_object_has_pages(struct drm_i915_gem_object *obj) { diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c b/drivers/gpu/drm/i915/gem/i915_gem_pages.c index 2d0065fa6e80..5b8af8f83ee3 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c @@ -139,6 +139,26 @@ int __i915_gem_object_get_pages(struct drm_i915_gem_object *obj) return err; }
+int i915_gem_object_pin_pages_unlocked(struct drm_i915_gem_object *obj) +{ + struct i915_gem_ww_ctx ww; + int err; + + i915_gem_ww_ctx_init(&ww, true); +retry: + err = i915_gem_object_lock(obj, &ww); + if (!err) + err = i915_gem_object_pin_pages(obj); + + if (err == -EDEADLK) { + err = i915_gem_ww_ctx_backoff(&ww); + if (!err) + goto retry; + } + i915_gem_ww_ctx_fini(&ww); + return err; +} + /* Immediately discard the backing storage */ void i915_gem_object_truncate(struct drm_i915_gem_object *obj) { diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c index 4545e90e3bf1..78305b2ec89d 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c @@ -682,7 +682,7 @@ int intel_guc_allocate_and_map_vma(struct intel_guc *guc, u32 size, if (IS_ERR(vma)) return PTR_ERR(vma);
- vaddr = i915_gem_object_pin_map(vma->obj, I915_MAP_WB); + vaddr = i915_gem_object_pin_map_unlocked(vma->obj, I915_MAP_WB); if (IS_ERR(vaddr)) { i915_vma_unpin_and_release(&vma, 0); return PTR_ERR(vaddr); diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c index c92f2c056db4..c36d5eb5bbb9 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c @@ -335,7 +335,7 @@ static int guc_log_map(struct intel_guc_log *log) * buffer pages, so that we can directly get the data * (up-to-date) from memory. */ - vaddr = i915_gem_object_pin_map(log->vma->obj, I915_MAP_WC); + vaddr = i915_gem_object_pin_map_unlocked(log->vma->obj, I915_MAP_WC); if (IS_ERR(vaddr)) return PTR_ERR(vaddr);
@@ -744,7 +744,7 @@ int intel_guc_log_dump(struct intel_guc_log *log, struct drm_printer *p, if (!obj) return 0;
- map = i915_gem_object_pin_map(obj, I915_MAP_WC); + map = i915_gem_object_pin_map_unlocked(obj, I915_MAP_WC); if (IS_ERR(map)) { DRM_DEBUG("Failed to pin object\n"); drm_puts(p, "(log data unaccessible)\n"); diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc.c b/drivers/gpu/drm/i915/gt/uc/intel_huc.c index 65eeb44b397d..2126dd81ac38 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_huc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_huc.c @@ -82,7 +82,7 @@ static int intel_huc_rsa_data_create(struct intel_huc *huc) if (IS_ERR(vma)) return PTR_ERR(vma);
- vaddr = i915_gem_object_pin_map(vma->obj, I915_MAP_WB); + vaddr = i915_gem_object_pin_map_unlocked(vma->obj, I915_MAP_WB); if (IS_ERR(vaddr)) { i915_vma_unpin_and_release(&vma, 0); return PTR_ERR(vaddr); diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c index 984fa79e0fa7..df647c9a8d56 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c @@ -539,7 +539,7 @@ int intel_uc_fw_init(struct intel_uc_fw *uc_fw) if (!intel_uc_fw_is_available(uc_fw)) return -ENOEXEC;
- err = i915_gem_object_pin_pages(uc_fw->obj); + err = i915_gem_object_pin_pages_unlocked(uc_fw->obj); if (err) { DRM_DEBUG_DRIVER("%s fw pin-pages err=%d\n", intel_uc_fw_type_repr(uc_fw->type), err);