diff options
| author | Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> | 2019-07-24 17:18:11 -0700 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-25 07:30:41 +0100 |
| commit | 9cb27945570567b75af7a8751803d41d0a6ce1a7 (patch) | |
| tree | ae44a8cd5c9ae574ac2fd0f3b2922928577b6e16 /drivers/gpu/drm/i915/gt/uc/intel_huc.c | |
| parent | 90dd992260cc44cec8f6e41ab5e64938921912c0 (diff) | |
drm/i915/huc: Copy huc rsa only once
The binary is perma-pinned and the rsa is not going to change, so copy
it only once and not on every load.
v2: onion unwind (Chris)
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Fernando Pacheco <fernando.pacheco@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> #v1
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190725001813.4740-7-daniele.ceraolospurio@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gt/uc/intel_huc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/uc/intel_huc.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc.c b/drivers/gpu/drm/i915/gt/uc/intel_huc.c index a45976e56af7..c9535caba844 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_huc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_huc.c @@ -50,6 +50,7 @@ static int intel_huc_rsa_data_create(struct intel_huc *huc) struct intel_gt *gt = huc_to_gt(huc); struct intel_guc *guc = >->uc.guc; struct i915_vma *vma; + size_t copied; void *vaddr; /* @@ -62,6 +63,7 @@ static int intel_huc_rsa_data_create(struct intel_huc *huc) * the authentication since its GGTT offset will be GuC * accessible. */ + GEM_BUG_ON(huc->fw.rsa_size > PAGE_SIZE); vma = intel_guc_allocate_vma(guc, PAGE_SIZE); if (IS_ERR(vma)) return PTR_ERR(vma); @@ -72,26 +74,43 @@ static int intel_huc_rsa_data_create(struct intel_huc *huc) return PTR_ERR(vaddr); } + copied = intel_uc_fw_copy_rsa(&huc->fw, vaddr, vma->size); + GEM_BUG_ON(copied < huc->fw.rsa_size); + + i915_gem_object_unpin_map(vma->obj); + huc->rsa_data = vma; - huc->rsa_data_vaddr = vaddr; return 0; } static void intel_huc_rsa_data_destroy(struct intel_huc *huc) { - i915_vma_unpin_and_release(&huc->rsa_data, I915_VMA_RELEASE_MAP); + i915_vma_unpin_and_release(&huc->rsa_data, 0); } int intel_huc_init(struct intel_huc *huc) { int err; - err = intel_huc_rsa_data_create(huc); + err = intel_uc_fw_init(&huc->fw); if (err) return err; - return intel_uc_fw_init(&huc->fw); + /* + * HuC firmware image is outside GuC accessible range. + * Copy the RSA signature out of the image into + * a perma-pinned region set aside for it + */ + err = intel_huc_rsa_data_create(huc); + if (err) + goto out_fini; + + return 0; + +out_fini: + intel_uc_fw_fini(&huc->fw); + return err; } void intel_huc_fini(struct intel_huc *huc) |