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@xxxxxxxxx>
Cc: Fernando Pacheco <fernando.pacheco@xxxxxxxxx>
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> #v1
---
drivers/gpu/drm/i915/gt/uc/intel_huc.c | 27 +++++++++++++++++++----
drivers/gpu/drm/i915/gt/uc/intel_huc.h | 1 -
drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c | 17 --------------
3 files changed, 23 insertions(+), 22 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)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc.h b/drivers/gpu/drm/i915/gt/uc/intel_huc.h
index ea340f85bc46..4465209ce233 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_huc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_huc.h
@@ -35,7 +35,6 @@ struct intel_huc {
/* HuC-specific additions */
struct i915_vma *rsa_data;
- void *rsa_data_vaddr;
struct {
i915_reg_t reg;
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
index 472568843ccf..7d2d2eb94d22 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
@@ -34,21 +34,6 @@ void intel_huc_fw_init_early(struct intel_huc *huc)
intel_uc_fw_init_early(&huc->fw, INTEL_UC_FW_TYPE_HUC, huc_to_gt(huc)->i915);
}
-static void huc_xfer_rsa(struct intel_huc *huc)
-{
- size_t copied;
-
- /*
- * HuC firmware image is outside GuC accessible range.
- * Copy the RSA signature out of the image into
- * the perma-pinned region set aside for it
- */
- GEM_BUG_ON(huc->fw.rsa_size > huc->rsa_data->size);
- copied = intel_uc_fw_copy_rsa(&huc->fw, huc->rsa_data_vaddr,
- huc->rsa_data->size);
- GEM_BUG_ON(copied < huc->fw.rsa_size);
-}
-
static int huc_xfer_ucode(struct intel_huc *huc)
{
struct intel_uc_fw *huc_fw = &huc->fw;
@@ -108,8 +93,6 @@ static int huc_fw_xfer(struct intel_uc_fw *huc_fw)
{
struct intel_huc *huc = container_of(huc_fw, struct intel_huc, fw);
- huc_xfer_rsa(huc);
-
return huc_xfer_ucode(huc);
}
--
2.22.0
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