Re: [PATCH v4 14/15] drm/i915/huc: define gsc-compatible HuC fw for DG2

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On 9/8/2022 5:16 PM, Daniele Ceraolo Spurio wrote:
The fw name is different and we need to record the fact that the blob is
gsc-loaded, so add a new macro to help.

Note: A-step DG2 G10 does not support HuC loading via GSC and would
require a separate firmware to be loaded the legacy way, but that's
not a production stepping so we're not going to bother.

v2: rebase on new fw fetch logic

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Tony Ye <tony.ye@xxxxxxxxx>
Reviewed-by: Alan Previn <alan.previn.teres.alexis@xxxxxxxxx> #v1
---
  drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c | 23 ++++++++++++++++-------
  1 file changed, 16 insertions(+), 7 deletions(-)

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 4792960d9c04..09e06ac8bcf1 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
@@ -91,7 +91,8 @@ void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
  	fw_def(BROXTON,      0, guc_mmp(bxt,  70, 1, 1)) \
  	fw_def(SKYLAKE,      0, guc_mmp(skl,  70, 1, 1))
-#define INTEL_HUC_FIRMWARE_DEFS(fw_def, huc_raw, huc_mmp) \
+#define INTEL_HUC_FIRMWARE_DEFS(fw_def, huc_raw, huc_mmp, huc_gsc) \
+	fw_def(DG2,          0, huc_gsc(dg2)) \
  	fw_def(ALDERLAKE_P,  0, huc_mmp(tgl,  7, 9, 3)) \
  	fw_def(ALDERLAKE_S,  0, huc_mmp(tgl,  7, 9, 3)) \
  	fw_def(DG1,          0, huc_mmp(dg1,  7, 9, 3)) \
@@ -137,6 +138,9 @@ void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
  #define MAKE_HUC_FW_PATH_BLANK(prefix_) \
  	__MAKE_UC_FW_PATH_BLANK(prefix_, "_huc")
+#define MAKE_HUC_FW_PATH_GSC(prefix_) \
+	__MAKE_UC_FW_PATH_BLANK(prefix_, "_huc_gsc")
+
  #define MAKE_HUC_FW_PATH_MMP(prefix_, major_, minor_, patch_) \
  	__MAKE_UC_FW_PATH_MMP(prefix_, "_huc_", major_, minor_, patch_)
@@ -149,7 +153,7 @@ void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
  	MODULE_FIRMWARE(uc_);
INTEL_GUC_FIRMWARE_DEFS(INTEL_UC_MODULE_FW, MAKE_GUC_FW_PATH_MAJOR, MAKE_GUC_FW_PATH_MMP)
-INTEL_HUC_FIRMWARE_DEFS(INTEL_UC_MODULE_FW, MAKE_HUC_FW_PATH_BLANK, MAKE_HUC_FW_PATH_MMP)
+INTEL_HUC_FIRMWARE_DEFS(INTEL_UC_MODULE_FW, MAKE_HUC_FW_PATH_BLANK, MAKE_HUC_FW_PATH_MMP, MAKE_HUC_FW_PATH_GSC)
/*
   * The next expansion of the table macros (in __uc_fw_auto_select below) provides
@@ -164,6 +168,7 @@ struct __packed uc_fw_blob {
  	u8 major;
  	u8 minor;
  	u8 patch;
+	bool loaded_via_gsc;
  };
#define UC_FW_BLOB_BASE(major_, minor_, patch_, path_) \
@@ -172,16 +177,16 @@ struct __packed uc_fw_blob {
  	.patch = patch_, \
  	.path = path_,
-#define UC_FW_BLOB_NEW(major_, minor_, patch_, path_) \
+#define UC_FW_BLOB_NEW(major_, minor_, patch_, gsc_, path_) \
  	{ UC_FW_BLOB_BASE(major_, minor_, patch_, path_) \
-	  .legacy = false }
+	  .legacy = false, .loaded_via_gsc = gsc_ }
#define UC_FW_BLOB_OLD(major_, minor_, patch_, path_) \
  	{ UC_FW_BLOB_BASE(major_, minor_, patch_, path_) \
  	  .legacy = true }
#define GUC_FW_BLOB(prefix_, major_, minor_) \
-	UC_FW_BLOB_NEW(major_, minor_, 0, \
+	UC_FW_BLOB_NEW(major_, minor_, 0, false, \
  		       MAKE_GUC_FW_PATH_MAJOR(prefix_, major_, minor_))
#define GUC_FW_BLOB_MMP(prefix_, major_, minor_, patch_) \
@@ -189,12 +194,15 @@ struct __packed uc_fw_blob {
  		       MAKE_GUC_FW_PATH_MMP(prefix_, major_, minor_, patch_))
#define HUC_FW_BLOB(prefix_) \
-	UC_FW_BLOB_NEW(0, 0, 0, MAKE_HUC_FW_PATH_BLANK(prefix_))
+	UC_FW_BLOB_NEW(0, 0, 0, false, MAKE_HUC_FW_PATH_BLANK(prefix_))
#define HUC_FW_BLOB_MMP(prefix_, major_, minor_, patch_) \
  	UC_FW_BLOB_OLD(major_, minor_, patch_, \
  		       MAKE_HUC_FW_PATH_MMP(prefix_, major_, minor_, patch_))
+#define HUC_FW_BLOB_GSC(prefix_) \
+	UC_FW_BLOB_NEW(0, 0, 0, true, MAKE_HUC_FW_PATH_GSC(prefix_))
+
  struct __packed uc_fw_platform_requirement {
  	enum intel_platform p;
  	u8 rev; /* first platform rev using this FW */
@@ -220,7 +228,7 @@ __uc_fw_auto_select(struct drm_i915_private *i915, struct intel_uc_fw *uc_fw)
  		INTEL_GUC_FIRMWARE_DEFS(MAKE_FW_LIST, GUC_FW_BLOB, GUC_FW_BLOB_MMP)
  	};
  	static const struct uc_fw_platform_requirement blobs_huc[] = {
-		INTEL_HUC_FIRMWARE_DEFS(MAKE_FW_LIST, HUC_FW_BLOB, HUC_FW_BLOB_MMP)
+		INTEL_HUC_FIRMWARE_DEFS(MAKE_FW_LIST, HUC_FW_BLOB, HUC_FW_BLOB_MMP, HUC_FW_BLOB_GSC)
  	};
  	static const struct fw_blobs_by_type blobs_all[INTEL_UC_FW_NUM_TYPES] = {
  		[INTEL_UC_FW_TYPE_GUC] = { blobs_guc, ARRAY_SIZE(blobs_guc) },
@@ -266,6 +274,7 @@ __uc_fw_auto_select(struct drm_i915_private *i915, struct intel_uc_fw *uc_fw)
  		uc_fw->file_wanted.path = blob->path;
  		uc_fw->file_wanted.major_ver = blob->major;
  		uc_fw->file_wanted.minor_ver = blob->minor;
+		uc_fw->loaded_via_gsc = blob->loaded_via_gsc;
  		break;
  	}


Acked-by: Tony Ye <tony.ye@xxxxxxxxx>

Thanks,

Tony




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