[PATCH v3 0/3] Drop version numbers from firmware files

[PATCH v3 0/3] Drop version numbers from firmware files

[John.C.Harrison]

From: John Harrison <John.C.Harrison@Intel.com>

Upstream direction is to include the bare minimum of version numbers
in firmware files and to replace them in the repo rather than
accumulating them. For HuC, that means going completely versionless.
For GuC, the major version needs to be kept as that indicates a break
in backwards compatibility with the KMD.

v2: Fix a bunch of issues and add better documentation (some found in
code review by Daniele, other through more thorough testing).
v3: Fix GSC HuC version field and a comment type (review feedback from
Daniele).

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
CC: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>


John Harrison (3):
  drm/i915/uc: Support for version reduced and multiple firmware files
  drm/i915/uc: Add patch level version number support
  drm/i915/uc: Enable version reduced firmware files for newest
    platforms

 .../gpu/drm/i915/gt/uc/intel_guc_submission.c |  10 +-
 drivers/gpu/drm/i915/gt/uc/intel_uc.c         |   8 +-
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c      | 468 ++++++++++++------
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h      |  39 +-
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h  |   8 +-
 drivers/gpu/drm/i915/i915_gpu_error.c         |  16 +-
 6 files changed, 358 insertions(+), 191 deletions(-)

-- 
2.37.2

[PATCH v3 1/3] drm/i915/uc: Support for version reduced and multiple firmware files

[John.C.Harrison]

From: John Harrison <John.C.Harrison@Intel.com>

There was a misunderstanding in how firmware file compatibility should
be managed within i915. This has been clarified as:
  i915 must support all existing firmware releases forever
  new minor firmware releases should replace prior versions
  only backwards compatibility breaking releases should be a new file

This patch cleans up the single fallback file support that was added
as a quick fix emergency effort. That is now removed in preference to
supporting arbitrary numbers of firmware files per platform.

The patch also adds support for having GuC firmware files that are
named by major version only (because the major version indicates
backwards breaking changes that affect the KMD) and for having HuC
firmware files with no version number at all (because the KMD has no
interface requirements with the HuC).

For GuC, the driver will report via dmesg if the found file is older than
expected. For HuC, the KMD will no longer require updating for any new
HuC release so will not be able to report what the latest expected
version is.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
---
 .../gpu/drm/i915/gt/uc/intel_guc_submission.c |  10 +-
 drivers/gpu/drm/i915/gt/uc/intel_uc.c         |   4 +-
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c      | 442 ++++++++++++------
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h      |  33 +-
 drivers/gpu/drm/i915/i915_gpu_error.c         |  16 +-
 5 files changed, 319 insertions(+), 186 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 0d56b615bf78e..04393932623c7 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -1868,7 +1868,7 @@ int intel_guc_submission_init(struct intel_guc *guc)
 	if (guc->submission_initialized)
 		return 0;
 
-	if (guc->fw.major_ver_found < 70) {
+	if (guc->fw.file_selected.major_ver < 70) {
 		ret = guc_lrc_desc_pool_create_v69(guc);
 		if (ret)
 			return ret;
@@ -2303,7 +2303,7 @@ static int register_context(struct intel_context *ce, bool loop)
 	GEM_BUG_ON(intel_context_is_child(ce));
 	trace_intel_context_register(ce);
 
-	if (guc->fw.major_ver_found >= 70)
+	if (guc->fw.file_selected.major_ver >= 70)
 		ret = register_context_v70(guc, ce, loop);
 	else
 		ret = register_context_v69(guc, ce, loop);
@@ -2315,7 +2315,7 @@ static int register_context(struct intel_context *ce, bool loop)
 		set_context_registered(ce);
 		spin_unlock_irqrestore(&ce->guc_state.lock, flags);
 
-		if (guc->fw.major_ver_found >= 70)
+		if (guc->fw.file_selected.major_ver >= 70)
 			guc_context_policy_init_v70(ce, loop);
 	}
 
@@ -2921,7 +2921,7 @@ static void __guc_context_set_preemption_timeout(struct intel_guc *guc,
 						 u16 guc_id,
 						 u32 preemption_timeout)
 {
-	if (guc->fw.major_ver_found >= 70) {
+	if (guc->fw.file_selected.major_ver >= 70) {
 		struct context_policy policy;
 
 		__guc_context_policy_start_klv(&policy, guc_id);
@@ -3186,7 +3186,7 @@ static int guc_context_alloc(struct intel_context *ce)
 static void __guc_context_set_prio(struct intel_guc *guc,
 				   struct intel_context *ce)
 {
-	if (guc->fw.major_ver_found >= 70) {
+	if (guc->fw.file_selected.major_ver >= 70) {
 		struct context_policy policy;
 
 		__guc_context_policy_start_klv(&policy, ce->guc_id.id);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index f2e7c82985efd..d965ac4832d60 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -436,8 +436,8 @@ static void print_fw_ver(struct intel_uc *uc, struct intel_uc_fw *fw)
 	struct drm_i915_private *i915 = uc_to_gt(uc)->i915;
 
 	drm_info(&i915->drm, "%s firmware %s version %u.%u\n",
-		 intel_uc_fw_type_repr(fw->type), fw->path,
-		 fw->major_ver_found, fw->minor_ver_found);
+		 intel_uc_fw_type_repr(fw->type), fw->file_selected.path,
+		 fw->file_selected.major_ver, fw->file_selected.minor_ver);
 }
 
 static int __uc_init_hw(struct intel_uc *uc)
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 58547292efa0a..610f36f1b989a 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
@@ -41,7 +41,7 @@ void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
 		"%s firmware -> %s\n",
 		intel_uc_fw_type_repr(uc_fw->type),
 		status == INTEL_UC_FIRMWARE_SELECTED ?
-		uc_fw->path : intel_uc_fw_status_repr(status));
+		uc_fw->file_selected.path : intel_uc_fw_status_repr(status));
 }
 #endif
 
@@ -51,84 +51,149 @@ void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
  *
  * Note that RKL and ADL-S have the same GuC/HuC device ID's and use the same
  * firmware as TGL.
+ *
+ * Version numbers:
+ * Originally, the driver required an exact match major/minor/patch furmware
+ * file and only supported that one version for any given platform. However,
+ * the new direction from upstream is to be backwards compatible with all
+ * prior releases and to be as flexible as possible as to what firmware is
+ * loaded.
+ *
+ * For GuC, the major version number signifies a backwards breaking API change.
+ * So, new format GuC firmware files are labelled by their major version only.
+ * For HuC, there is no KMD interaction, hence no version matching requirement.
+ * So, new format HuC firmware files have no version number at all.
+ *
+ * All of which means that the table below must keep all old format files with
+ * full three point version number. But newer files have reduced requirements.
+ * Having said that, the driver still needs to track the minor version number
+ * for GuC at least. As it is useful to report to the user that they are not
+ * running with a recent enough version for all KMD supported features,
+ * security fixes, etc. to be enabled.
  */
-#define INTEL_GUC_FIRMWARE_DEFS(fw_def, guc_def) \
-	fw_def(DG2,          0, guc_def(dg2,  70, 4, 1)) \
-	fw_def(ALDERLAKE_P,  0, guc_def(adlp, 70, 1, 1)) \
-	fw_def(ALDERLAKE_S,  0, guc_def(tgl,  70, 1, 1)) \
-	fw_def(DG1,          0, guc_def(dg1,  70, 1, 1)) \
-	fw_def(ROCKETLAKE,   0, guc_def(tgl,  70, 1, 1)) \
-	fw_def(TIGERLAKE,    0, guc_def(tgl,  70, 1, 1)) \
-	fw_def(JASPERLAKE,   0, guc_def(ehl,  70, 1, 1)) \
-	fw_def(ELKHARTLAKE,  0, guc_def(ehl,  70, 1, 1)) \
-	fw_def(ICELAKE,      0, guc_def(icl,  70, 1, 1)) \
-	fw_def(COMETLAKE,    5, guc_def(cml,  70, 1, 1)) \
-	fw_def(COMETLAKE,    0, guc_def(kbl,  70, 1, 1)) \
-	fw_def(COFFEELAKE,   0, guc_def(kbl,  70, 1, 1)) \
-	fw_def(GEMINILAKE,   0, guc_def(glk,  70, 1, 1)) \
-	fw_def(KABYLAKE,     0, guc_def(kbl,  70, 1, 1)) \
-	fw_def(BROXTON,      0, guc_def(bxt,  70, 1, 1)) \
-	fw_def(SKYLAKE,      0, guc_def(skl,  70, 1, 1))
-
-#define INTEL_GUC_FIRMWARE_DEFS_FALLBACK(fw_def, guc_def) \
-	fw_def(ALDERLAKE_P,  0, guc_def(adlp, 69, 0, 3)) \
-	fw_def(ALDERLAKE_S,  0, guc_def(tgl,  69, 0, 3))
-
-#define INTEL_HUC_FIRMWARE_DEFS(fw_def, huc_def) \
-	fw_def(ALDERLAKE_P,  0, huc_def(tgl,  7, 9, 3)) \
-	fw_def(ALDERLAKE_S,  0, huc_def(tgl,  7, 9, 3)) \
-	fw_def(DG1,          0, huc_def(dg1,  7, 9, 3)) \
-	fw_def(ROCKETLAKE,   0, huc_def(tgl,  7, 9, 3)) \
-	fw_def(TIGERLAKE,    0, huc_def(tgl,  7, 9, 3)) \
-	fw_def(JASPERLAKE,   0, huc_def(ehl,  9, 0, 0)) \
-	fw_def(ELKHARTLAKE,  0, huc_def(ehl,  9, 0, 0)) \
-	fw_def(ICELAKE,      0, huc_def(icl,  9, 0, 0)) \
-	fw_def(COMETLAKE,    5, huc_def(cml,  4, 0, 0)) \
-	fw_def(COMETLAKE,    0, huc_def(kbl,  4, 0, 0)) \
-	fw_def(COFFEELAKE,   0, huc_def(kbl,  4, 0, 0)) \
-	fw_def(GEMINILAKE,   0, huc_def(glk,  4, 0, 0)) \
-	fw_def(KABYLAKE,     0, huc_def(kbl,  4, 0, 0)) \
-	fw_def(BROXTON,      0, huc_def(bxt,  2, 0, 0)) \
-	fw_def(SKYLAKE,      0, huc_def(skl,  2, 0, 0))
-
-#define __MAKE_UC_FW_PATH(prefix_, name_, major_, minor_, patch_) \
+#define INTEL_GUC_FIRMWARE_DEFS(fw_def, guc_maj, guc_mmp) \
+	fw_def(DG2,          0, guc_mmp(dg2,  70, 4, 1)) \
+	fw_def(ALDERLAKE_P,  0, guc_mmp(adlp, 70, 1, 1)) \
+	fw_def(ALDERLAKE_P,  0, guc_mmp(adlp, 69, 0, 3)) \
+	fw_def(ALDERLAKE_S,  0, guc_mmp(tgl,  70, 1, 1)) \
+	fw_def(ALDERLAKE_S,  0, guc_mmp(tgl,  69, 0, 3)) \
+	fw_def(DG1,          0, guc_mmp(dg1,  70, 1, 1)) \
+	fw_def(ROCKETLAKE,   0, guc_mmp(tgl,  70, 1, 1)) \
+	fw_def(TIGERLAKE,    0, guc_mmp(tgl,  70, 1, 1)) \
+	fw_def(JASPERLAKE,   0, guc_mmp(ehl,  70, 1, 1)) \
+	fw_def(ELKHARTLAKE,  0, guc_mmp(ehl,  70, 1, 1)) \
+	fw_def(ICELAKE,      0, guc_mmp(icl,  70, 1, 1)) \
+	fw_def(COMETLAKE,    5, guc_mmp(cml,  70, 1, 1)) \
+	fw_def(COMETLAKE,    0, guc_mmp(kbl,  70, 1, 1)) \
+	fw_def(COFFEELAKE,   0, guc_mmp(kbl,  70, 1, 1)) \
+	fw_def(GEMINILAKE,   0, guc_mmp(glk,  70, 1, 1)) \
+	fw_def(KABYLAKE,     0, guc_mmp(kbl,  70, 1, 1)) \
+	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) \
+	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)) \
+	fw_def(ROCKETLAKE,   0, huc_mmp(tgl,  7, 9, 3)) \
+	fw_def(TIGERLAKE,    0, huc_mmp(tgl,  7, 9, 3)) \
+	fw_def(JASPERLAKE,   0, huc_mmp(ehl,  9, 0, 0)) \
+	fw_def(ELKHARTLAKE,  0, huc_mmp(ehl,  9, 0, 0)) \
+	fw_def(ICELAKE,      0, huc_mmp(icl,  9, 0, 0)) \
+	fw_def(COMETLAKE,    5, huc_mmp(cml,  4, 0, 0)) \
+	fw_def(COMETLAKE,    0, huc_mmp(kbl,  4, 0, 0)) \
+	fw_def(COFFEELAKE,   0, huc_mmp(kbl,  4, 0, 0)) \
+	fw_def(GEMINILAKE,   0, huc_mmp(glk,  4, 0, 0)) \
+	fw_def(KABYLAKE,     0, huc_mmp(kbl,  4, 0, 0)) \
+	fw_def(BROXTON,      0, huc_mmp(bxt,  2, 0, 0)) \
+	fw_def(SKYLAKE,      0, huc_mmp(skl,  2, 0, 0))
+
+/*
+ * Set of macros for producing a list of filenames from the above table.
+ */
+#define __MAKE_UC_FW_PATH_BLANK(prefix_, name_) \
+	"i915/" \
+	__stringify(prefix_) name_ ".bin"
+
+#define __MAKE_UC_FW_PATH_MAJOR(prefix_, name_, major_) \
+	"i915/" \
+	__stringify(prefix_) name_ \
+	__stringify(major_) ".bin"
+
+#define __MAKE_UC_FW_PATH_MMP(prefix_, name_, major_, minor_, patch_) \
 	"i915/" \
 	__stringify(prefix_) name_ \
 	__stringify(major_) "." \
 	__stringify(minor_) "." \
 	__stringify(patch_) ".bin"
 
-#define MAKE_GUC_FW_PATH(prefix_, major_, minor_, patch_) \
-	__MAKE_UC_FW_PATH(prefix_, "_guc_", major_, minor_, patch_)
+/* Minor for internal driver use, not part of file name */
+#define MAKE_GUC_FW_PATH_MAJOR(prefix_, major_, minor_) \
+	__MAKE_UC_FW_PATH_MAJOR(prefix_, "_guc_", major_)
 
-#define MAKE_HUC_FW_PATH(prefix_, major_, minor_, bld_num_) \
-	__MAKE_UC_FW_PATH(prefix_, "_huc_", major_, minor_, bld_num_)
+#define MAKE_GUC_FW_PATH_MMP(prefix_, major_, minor_, patch_) \
+	__MAKE_UC_FW_PATH_MMP(prefix_, "_guc_", major_, minor_, patch_)
 
-/* All blobs need to be declared via MODULE_FIRMWARE() */
+#define MAKE_HUC_FW_PATH_BLANK(prefix_) \
+	__MAKE_UC_FW_PATH_BLANK(prefix_, "_huc")
+
+#define MAKE_HUC_FW_PATH_MMP(prefix_, major_, minor_, patch_) \
+	__MAKE_UC_FW_PATH_MMP(prefix_, "_huc_", major_, minor_, patch_)
+
+/*
+ * All blobs need to be declared via MODULE_FIRMWARE().
+ * This first expansion of the table macros is solely to provide
+ * that declaration.
+ */
 #define INTEL_UC_MODULE_FW(platform_, revid_, uc_) \
 	MODULE_FIRMWARE(uc_);
 
-INTEL_GUC_FIRMWARE_DEFS(INTEL_UC_MODULE_FW, MAKE_GUC_FW_PATH)
-INTEL_GUC_FIRMWARE_DEFS_FALLBACK(INTEL_UC_MODULE_FW, MAKE_GUC_FW_PATH)
-INTEL_HUC_FIRMWARE_DEFS(INTEL_UC_MODULE_FW, MAKE_HUC_FW_PATH)
+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)
 
-/* The below structs and macros are used to iterate across the list of blobs */
+/*
+ * The next expansion of the table macros (in __uc_fw_auto_select below) provides
+ * actual data structures with both the filename and the version information.
+ * These structure arrays are then iterated over to the list of suitable files
+ * for the current platform and to then attempt to load those files, in the order
+ * listed, until one is successfully found.
+ */
 struct __packed uc_fw_blob {
+	const char *path;
+	bool legacy;
 	u8 major;
 	u8 minor;
-	const char *path;
+	u8 patch;
 };
 
-#define UC_FW_BLOB(major_, minor_, path_) \
-	{ .major = major_, .minor = minor_, .path = path_ }
+#define UC_FW_BLOB_BASE(major_, minor_, patch_, path_) \
+	.major = major_, \
+	.minor = minor_, \
+	.patch = patch_, \
+	.path = path_,
+
+#define UC_FW_BLOB_NEW(major_, minor_, patch_, path_) \
+	{ UC_FW_BLOB_BASE(major_, minor_, patch_, path_) \
+	  .legacy = false }
+
+#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_, patch_) \
-	UC_FW_BLOB(major_, minor_, \
-		   MAKE_GUC_FW_PATH(prefix_, major_, minor_, patch_))
+#define GUC_FW_BLOB(prefix_, major_, minor_) \
+	UC_FW_BLOB_NEW(major_, minor_, 0, \
+		       MAKE_GUC_FW_PATH_MAJOR(prefix_, major_, minor_))
 
-#define HUC_FW_BLOB(prefix_, major_, minor_, bld_num_) \
-	UC_FW_BLOB(major_, minor_, \
-		   MAKE_HUC_FW_PATH(prefix_, major_, minor_, bld_num_))
+#define GUC_FW_BLOB_MMP(prefix_, major_, minor_, patch_) \
+	UC_FW_BLOB_OLD(major_, minor_, patch_, \
+		       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_))
+
+#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_))
 
 struct __packed uc_fw_platform_requirement {
 	enum intel_platform p;
@@ -152,18 +217,16 @@ static void
 __uc_fw_auto_select(struct drm_i915_private *i915, struct intel_uc_fw *uc_fw)
 {
 	static const struct uc_fw_platform_requirement blobs_guc[] = {
-		INTEL_GUC_FIRMWARE_DEFS(MAKE_FW_LIST, GUC_FW_BLOB)
-	};
-	static const struct uc_fw_platform_requirement blobs_guc_fallback[] = {
-		INTEL_GUC_FIRMWARE_DEFS_FALLBACK(MAKE_FW_LIST, GUC_FW_BLOB)
+		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)
+		INTEL_HUC_FIRMWARE_DEFS(MAKE_FW_LIST, HUC_FW_BLOB, HUC_FW_BLOB_MMP)
 	};
 	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) },
 		[INTEL_UC_FW_TYPE_HUC] = { blobs_huc, ARRAY_SIZE(blobs_huc) },
 	};
+	static bool verified;
 	const struct uc_fw_platform_requirement *fw_blobs;
 	enum intel_platform p = INTEL_INFO(i915)->platform;
 	u32 fw_count;
@@ -184,49 +247,94 @@ __uc_fw_auto_select(struct drm_i915_private *i915, struct intel_uc_fw *uc_fw)
 	fw_count = blobs_all[uc_fw->type].count;
 
 	for (i = 0; i < fw_count && p <= fw_blobs[i].p; i++) {
-		if (p == fw_blobs[i].p && rev >= fw_blobs[i].rev) {
-			const struct uc_fw_blob *blob = &fw_blobs[i].blob;
-			uc_fw->path = blob->path;
-			uc_fw->wanted_path = blob->path;
-			uc_fw->major_ver_wanted = blob->major;
-			uc_fw->minor_ver_wanted = blob->minor;
-			break;
-		}
-	}
+		const struct uc_fw_blob *blob = &fw_blobs[i].blob;
 
-	if (uc_fw->type == INTEL_UC_FW_TYPE_GUC) {
-		const struct uc_fw_platform_requirement *blobs = blobs_guc_fallback;
-		u32 count = ARRAY_SIZE(blobs_guc_fallback);
+		if (p != fw_blobs[i].p)
+			continue;
 
-		for (i = 0; i < count && p <= blobs[i].p; i++) {
-			if (p == blobs[i].p && rev >= blobs[i].rev) {
-				const struct uc_fw_blob *blob = &blobs[i].blob;
+		if (rev < fw_blobs[i].rev)
+			continue;
 
-				uc_fw->fallback.path = blob->path;
-				uc_fw->fallback.major_ver = blob->major;
-				uc_fw->fallback.minor_ver = blob->minor;
-				break;
-			}
+		if (uc_fw->file_selected.path) {
+			if (uc_fw->file_selected.path == blob->path)
+				uc_fw->file_selected.path = NULL;
+
+			continue;
 		}
+
+		uc_fw->file_selected.path = blob->path;
+		uc_fw->file_wanted.path = blob->path;
+		uc_fw->file_wanted.major_ver = blob->major;
+		uc_fw->file_wanted.minor_ver = blob->minor;
+		break;
 	}
 
 	/* make sure the list is ordered as expected */
-	if (IS_ENABLED(CONFIG_DRM_I915_SELFTEST)) {
+	if (IS_ENABLED(CONFIG_DRM_I915_SELFTEST) && !verified) {
+		verified = true;
+
 		for (i = 1; i < fw_count; i++) {
+			/* Next platform is good: */
 			if (fw_blobs[i].p < fw_blobs[i - 1].p)
 				continue;
 
+			/* Next platform revision is good: */
 			if (fw_blobs[i].p == fw_blobs[i - 1].p &&
 			    fw_blobs[i].rev < fw_blobs[i - 1].rev)
 				continue;
 
-			drm_err(&i915->drm, "Invalid FW blob order: %s r%u comes before %s r%u\n",
-				intel_platform_name(fw_blobs[i - 1].p),
-				fw_blobs[i - 1].rev,
-				intel_platform_name(fw_blobs[i].p),
-				fw_blobs[i].rev);
+			/* Platform/revision must be in order: */
+			if (fw_blobs[i].p != fw_blobs[i - 1].p ||
+			    fw_blobs[i].rev != fw_blobs[i - 1].rev)
+				goto bad;
+
+			/* Next major version is good: */
+			if (fw_blobs[i].blob.major < fw_blobs[i - 1].blob.major)
+				continue;
+
+			/* New must be before legacy: */
+			if (!fw_blobs[i].blob.legacy && fw_blobs[i - 1].blob.legacy)
+				goto bad;
+
+			/* New to legacy also means 0.0 to X.Y (HuC), or X.0 to X.Y (GuC) */
+			if (fw_blobs[i].blob.legacy && !fw_blobs[i - 1].blob.legacy) {
+				if (!fw_blobs[i - 1].blob.major)
+					continue;
+
+				if (fw_blobs[i].blob.major == fw_blobs[i - 1].blob.major)
+					continue;
+			}
+
+			/* Major versions must be in order: */
+			if (fw_blobs[i].blob.major != fw_blobs[i - 1].blob.major)
+				goto bad;
+
+			/* Next minor version is good: */
+			if (fw_blobs[i].blob.minor < fw_blobs[i - 1].blob.minor)
+				continue;
 
-			uc_fw->path = NULL;
+			/* Minor versions must be in order: */
+			if (fw_blobs[i].blob.minor != fw_blobs[i - 1].blob.minor)
+				goto bad;
+
+			/* Patch versions must be in order: */
+			if (fw_blobs[i].blob.patch <= fw_blobs[i - 1].blob.patch)
+				continue;
+
+bad:
+			drm_err(&i915->drm, "\x1B[35;1mInvalid FW blob order: %s r%u %s%d.%d.%d comes before %s r%u %s%d.%d.%d\n",
+				intel_platform_name(fw_blobs[i - 1].p), fw_blobs[i - 1].rev,
+				fw_blobs[i - 1].blob.legacy ? "L" : "v",
+				fw_blobs[i - 1].blob.major,
+				fw_blobs[i - 1].blob.minor,
+				fw_blobs[i - 1].blob.patch,
+				intel_platform_name(fw_blobs[i].p), fw_blobs[i].rev,
+				fw_blobs[i].blob.legacy ? "L" : "v",
+				fw_blobs[i].blob.major,
+				fw_blobs[i].blob.minor,
+				fw_blobs[i].blob.patch);
+
+			uc_fw->file_selected.path = NULL;
 		}
 	}
 }
@@ -259,7 +367,7 @@ static void __uc_fw_user_override(struct drm_i915_private *i915, struct intel_uc
 	}
 
 	if (unlikely(path)) {
-		uc_fw->path = path;
+		uc_fw->file_selected.path = path;
 		uc_fw->user_overridden = true;
 	}
 }
@@ -283,7 +391,7 @@ void intel_uc_fw_init_early(struct intel_uc_fw *uc_fw,
 	 */
 	BUILD_BUG_ON(INTEL_UC_FIRMWARE_UNINITIALIZED);
 	GEM_BUG_ON(uc_fw->status);
-	GEM_BUG_ON(uc_fw->path);
+	GEM_BUG_ON(uc_fw->file_selected.path);
 
 	uc_fw->type = type;
 
@@ -292,7 +400,7 @@ void intel_uc_fw_init_early(struct intel_uc_fw *uc_fw,
 		__uc_fw_user_override(i915, uc_fw);
 	}
 
-	intel_uc_fw_change_status(uc_fw, uc_fw->path ? *uc_fw->path ?
+	intel_uc_fw_change_status(uc_fw, uc_fw->file_selected.path ? *uc_fw->file_selected.path ?
 				  INTEL_UC_FIRMWARE_SELECTED :
 				  INTEL_UC_FIRMWARE_DISABLED :
 				  INTEL_UC_FIRMWARE_NOT_SUPPORTED);
@@ -305,32 +413,32 @@ static void __force_fw_fetch_failures(struct intel_uc_fw *uc_fw, int e)
 
 	if (i915_inject_probe_error(i915, e)) {
 		/* non-existing blob */
-		uc_fw->path = "<invalid>";
+		uc_fw->file_selected.path = "<invalid>";
 		uc_fw->user_overridden = user;
 	} else if (i915_inject_probe_error(i915, e)) {
 		/* require next major version */
-		uc_fw->major_ver_wanted += 1;
-		uc_fw->minor_ver_wanted = 0;
+		uc_fw->file_wanted.major_ver += 1;
+		uc_fw->file_wanted.minor_ver = 0;
 		uc_fw->user_overridden = user;
 	} else if (i915_inject_probe_error(i915, e)) {
 		/* require next minor version */
-		uc_fw->minor_ver_wanted += 1;
+		uc_fw->file_wanted.minor_ver += 1;
 		uc_fw->user_overridden = user;
-	} else if (uc_fw->major_ver_wanted &&
+	} else if (uc_fw->file_wanted.major_ver &&
 		   i915_inject_probe_error(i915, e)) {
 		/* require prev major version */
-		uc_fw->major_ver_wanted -= 1;
-		uc_fw->minor_ver_wanted = 0;
+		uc_fw->file_wanted.major_ver -= 1;
+		uc_fw->file_wanted.minor_ver = 0;
 		uc_fw->user_overridden = user;
-	} else if (uc_fw->minor_ver_wanted &&
+	} else if (uc_fw->file_wanted.minor_ver &&
 		   i915_inject_probe_error(i915, e)) {
 		/* require prev minor version - hey, this should work! */
-		uc_fw->minor_ver_wanted -= 1;
+		uc_fw->file_wanted.minor_ver -= 1;
 		uc_fw->user_overridden = user;
 	} else if (user && i915_inject_probe_error(i915, e)) {
 		/* officially unsupported platform */
-		uc_fw->major_ver_wanted = 0;
-		uc_fw->minor_ver_wanted = 0;
+		uc_fw->file_wanted.major_ver = 0;
+		uc_fw->file_wanted.minor_ver = 0;
 		uc_fw->user_overridden = true;
 	}
 }
@@ -341,8 +449,8 @@ static int check_gsc_manifest(const struct firmware *fw,
 	u32 *dw = (u32 *)fw->data;
 	u32 version = dw[HUC_GSC_VERSION_DW];
 
-	uc_fw->major_ver_found = FIELD_GET(HUC_GSC_MAJOR_VER_MASK, version);
-	uc_fw->minor_ver_found = FIELD_GET(HUC_GSC_MINOR_VER_MASK, version);
+	uc_fw->file_selected.major_ver = FIELD_GET(HUC_GSC_MAJOR_VER_MASK, version);
+	uc_fw->file_selected.minor_ver = FIELD_GET(HUC_GSC_MINOR_VER_MASK, version);
 
 	return 0;
 }
@@ -357,7 +465,7 @@ static int check_ccs_header(struct drm_i915_private *i915,
 	/* Check the size of the blob before examining buffer contents */
 	if (unlikely(fw->size < sizeof(struct uc_css_header))) {
 		drm_warn(&i915->drm, "%s firmware %s: invalid size: %zu < %zu\n",
-			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->path,
+			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_selected.path,
 			 fw->size, sizeof(struct uc_css_header));
 		return -ENODATA;
 	}
@@ -370,7 +478,7 @@ static int check_ccs_header(struct drm_i915_private *i915,
 	if (unlikely(size != sizeof(struct uc_css_header))) {
 		drm_warn(&i915->drm,
 			 "%s firmware %s: unexpected header size: %zu != %zu\n",
-			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->path,
+			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_selected.path,
 			 fw->size, sizeof(struct uc_css_header));
 		return -EPROTO;
 	}
@@ -385,7 +493,7 @@ static int check_ccs_header(struct drm_i915_private *i915,
 	size = sizeof(struct uc_css_header) + uc_fw->ucode_size + uc_fw->rsa_size;
 	if (unlikely(fw->size < size)) {
 		drm_warn(&i915->drm, "%s firmware %s: invalid size: %zu < %zu\n",
-			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->path,
+			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_selected.path,
 			 fw->size, size);
 		return -ENOEXEC;
 	}
@@ -394,16 +502,16 @@ static int check_ccs_header(struct drm_i915_private *i915,
 	size = __intel_uc_fw_get_upload_size(uc_fw);
 	if (unlikely(size >= i915->wopcm.size)) {
 		drm_warn(&i915->drm, "%s firmware %s: invalid size: %zu > %zu\n",
-			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->path,
+			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_selected.path,
 			 size, (size_t)i915->wopcm.size);
 		return -E2BIG;
 	}
 
 	/* Get version numbers from the CSS header */
-	uc_fw->major_ver_found = FIELD_GET(CSS_SW_VERSION_UC_MAJOR,
-					   css->sw_version);
-	uc_fw->minor_ver_found = FIELD_GET(CSS_SW_VERSION_UC_MINOR,
-					   css->sw_version);
+	uc_fw->file_selected.major_ver = FIELD_GET(CSS_SW_VERSION_UC_MAJOR,
+						   css->sw_version);
+	uc_fw->file_selected.minor_ver = FIELD_GET(CSS_SW_VERSION_UC_MINOR,
+						   css->sw_version);
 
 	if (uc_fw->type == INTEL_UC_FW_TYPE_GUC)
 		uc_fw->private_data_size = css->private_data_size;
@@ -422,9 +530,11 @@ static int check_ccs_header(struct drm_i915_private *i915,
 int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw)
 {
 	struct drm_i915_private *i915 = __uc_fw_to_gt(uc_fw)->i915;
+	struct intel_uc_fw_file file_ideal;
 	struct device *dev = i915->drm.dev;
 	struct drm_i915_gem_object *obj;
 	const struct firmware *fw = NULL;
+	bool old_ver = false;
 	int err;
 
 	GEM_BUG_ON(!i915->wopcm.size);
@@ -437,27 +547,33 @@ int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw)
 	__force_fw_fetch_failures(uc_fw, -EINVAL);
 	__force_fw_fetch_failures(uc_fw, -ESTALE);
 
-	err = firmware_request_nowarn(&fw, uc_fw->path, dev);
-	if (err && !intel_uc_fw_is_overridden(uc_fw) && uc_fw->fallback.path) {
-		err = firmware_request_nowarn(&fw, uc_fw->fallback.path, dev);
-		if (!err) {
-			drm_notice(&i915->drm,
-				   "%s firmware %s is recommended, but only %s was found\n",
-				   intel_uc_fw_type_repr(uc_fw->type),
-				   uc_fw->wanted_path,
-				   uc_fw->fallback.path);
-			drm_info(&i915->drm,
-				 "Consider updating your linux-firmware pkg or downloading from %s\n",
-				 INTEL_UC_FIRMWARE_URL);
-
-			uc_fw->path = uc_fw->fallback.path;
-			uc_fw->major_ver_wanted = uc_fw->fallback.major_ver;
-			uc_fw->minor_ver_wanted = uc_fw->fallback.minor_ver;
+	err = firmware_request_nowarn(&fw, uc_fw->file_selected.path, dev);
+	memcpy(&file_ideal, &uc_fw->file_wanted, sizeof(file_ideal));
+	if (!err || intel_uc_fw_is_overridden(uc_fw))
+		goto done;
+
+	while (err == -ENOENT) {
+		__uc_fw_auto_select(i915, uc_fw);
+		if (!uc_fw->file_selected.path) {
+			/*
+			 * No more options! But set the path back to something
+			 * valid just in case it gets dereferenced.
+			 */
+			uc_fw->file_selected.path = file_ideal.path;
+
+			/* Also, preserve the version that was really wanted */
+			memcpy(&uc_fw->file_wanted, &file_ideal, sizeof(uc_fw->file_wanted));
+			break;
 		}
+
+		err = firmware_request_nowarn(&fw, uc_fw->file_selected.path, dev);
 	}
+
 	if (err)
 		goto fail;
 
+	old_ver = true;
+done:
 	if (uc_fw->loaded_via_gsc)
 		err = check_gsc_manifest(fw, uc_fw);
 	else
@@ -465,18 +581,39 @@ int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw)
 	if (err)
 		goto fail;
 
-	if (uc_fw->major_ver_found != uc_fw->major_ver_wanted ||
-	    uc_fw->minor_ver_found < uc_fw->minor_ver_wanted) {
-		drm_notice(&i915->drm, "%s firmware %s: unexpected version: %u.%u != %u.%u\n",
-			   intel_uc_fw_type_repr(uc_fw->type), uc_fw->path,
-			   uc_fw->major_ver_found, uc_fw->minor_ver_found,
-			   uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted);
-		if (!intel_uc_fw_is_overridden(uc_fw)) {
-			err = -ENOEXEC;
-			goto fail;
+	if (uc_fw->file_wanted.major_ver) {
+		/* Check the file's major version was as it claimed */
+		if (uc_fw->file_selected.major_ver != uc_fw->file_wanted.major_ver) {
+			drm_notice(&i915->drm, "%s firmware %s: unexpected version: %u.%u != %u.%u\n",
+				   intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_selected.path,
+				   uc_fw->file_selected.major_ver, uc_fw->file_selected.minor_ver,
+				   uc_fw->file_wanted.major_ver, uc_fw->file_wanted.minor_ver);
+			if (!intel_uc_fw_is_overridden(uc_fw)) {
+				err = -ENOEXEC;
+				goto fail;
+			}
+		} else {
+			if (uc_fw->file_selected.minor_ver < uc_fw->file_wanted.minor_ver)
+				old_ver = true;
 		}
 	}
 
+	if (old_ver) {
+		/* Preserve the version that was really wanted */
+		memcpy(&uc_fw->file_wanted, &file_ideal, sizeof(uc_fw->file_wanted));
+
+		drm_notice(&i915->drm,
+			   "%s firmware %s (%d.%d) is recommended, but only %s (%d.%d) was found\n",
+			   intel_uc_fw_type_repr(uc_fw->type),
+			   uc_fw->file_wanted.path,
+			   uc_fw->file_wanted.major_ver, uc_fw->file_wanted.minor_ver,
+			   uc_fw->file_selected.path,
+			   uc_fw->file_selected.major_ver, uc_fw->file_selected.minor_ver);
+		drm_info(&i915->drm,
+			 "Consider updating your linux-firmware pkg or downloading from %s\n",
+			 INTEL_UC_FIRMWARE_URL);
+	}
+
 	if (HAS_LMEM(i915)) {
 		obj = i915_gem_object_create_lmem_from_data(i915, fw->data, fw->size);
 		if (!IS_ERR(obj))
@@ -503,7 +640,7 @@ int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw)
 				  INTEL_UC_FIRMWARE_ERROR);
 
 	i915_probe_error(i915, "%s firmware %s: fetch failed with error %d\n",
-			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->path, err);
+			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_selected.path, err);
 	drm_info(&i915->drm, "%s firmware(s) can be downloaded from %s\n",
 		 intel_uc_fw_type_repr(uc_fw->type), INTEL_UC_FIRMWARE_URL);
 
@@ -645,7 +782,7 @@ int intel_uc_fw_upload(struct intel_uc_fw *uc_fw, u32 dst_offset, u32 dma_flags)
 
 fail:
 	i915_probe_error(gt->i915, "Failed to load %s firmware %s (%d)\n",
-			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->path,
+			 intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_selected.path,
 			 err);
 	intel_uc_fw_change_status(uc_fw, INTEL_UC_FIRMWARE_LOAD_FAIL);
 	return err;
@@ -864,18 +1001,19 @@ size_t intel_uc_fw_copy_rsa(struct intel_uc_fw *uc_fw, void *dst, u32 max_len)
 void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p)
 {
 	drm_printf(p, "%s firmware: %s\n",
-		   intel_uc_fw_type_repr(uc_fw->type), uc_fw->wanted_path);
-	if (uc_fw->fallback.path) {
-		drm_printf(p, "%s firmware fallback: %s\n",
-			   intel_uc_fw_type_repr(uc_fw->type), uc_fw->fallback.path);
-		drm_printf(p, "fallback selected: %s\n",
-			   str_yes_no(uc_fw->path == uc_fw->fallback.path));
-	}
+		   intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_selected.path);
+	if (uc_fw->file_selected.path != uc_fw->file_wanted.path)
+		drm_printf(p, "%s firmware wanted: %s\n",
+			   intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_wanted.path);
 	drm_printf(p, "\tstatus: %s\n",
 		   intel_uc_fw_status_repr(uc_fw->status));
-	drm_printf(p, "\tversion: wanted %u.%u, found %u.%u\n",
-		   uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted,
-		   uc_fw->major_ver_found, uc_fw->minor_ver_found);
+	if (uc_fw->file_wanted.major_ver)
+		drm_printf(p, "\tversion: wanted %u.%u, found %u.%u\n",
+			   uc_fw->file_wanted.major_ver, uc_fw->file_wanted.minor_ver,
+			   uc_fw->file_selected.major_ver, uc_fw->file_selected.minor_ver);
+	else
+		drm_printf(p, "\tversion: found %u.%u\n",
+			   uc_fw->file_selected.major_ver, uc_fw->file_selected.minor_ver);
 	drm_printf(p, "\tuCode: %u bytes\n", uc_fw->ucode_size);
 	drm_printf(p, "\tRSA: %u bytes\n", uc_fw->rsa_size);
 }
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
index 7aa2644400b98..344763c942e37 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
@@ -64,6 +64,17 @@ enum intel_uc_fw_type {
 };
 #define INTEL_UC_FW_NUM_TYPES 2
 
+/*
+ * The firmware build process will generate a version header file with major and
+ * minor version defined. The versions are built into CSS header of firmware.
+ * i915 kernel driver set the minimal firmware version required per platform.
+ */
+struct intel_uc_fw_file {
+	const char *path;
+	u16 major_ver;
+	u16 minor_ver;
+};
+
 /*
  * This structure encapsulates all the data needed during the process
  * of fetching, caching, and loading the firmware image into the uC.
@@ -74,11 +85,12 @@ struct intel_uc_fw {
 		const enum intel_uc_fw_status status;
 		enum intel_uc_fw_status __status; /* no accidental overwrites */
 	};
-	const char *wanted_path;
-	const char *path;
+	struct intel_uc_fw_file file_wanted;
+	struct intel_uc_fw_file file_selected;
 	bool user_overridden;
 	size_t size;
 	struct drm_i915_gem_object *obj;
+
 	/**
 	 * @dummy: A vma used in binding the uc fw to ggtt. We can't define this
 	 * vma on the stack as it can lead to a stack overflow, so we define it
@@ -89,25 +101,8 @@ struct intel_uc_fw {
 	struct i915_vma_resource dummy;
 	struct i915_vma *rsa_data;
 
-	/*
-	 * The firmware build process will generate a version header file with major and
-	 * minor version defined. The versions are built into CSS header of firmware.
-	 * i915 kernel driver set the minimal firmware version required per platform.
-	 */
-	u16 major_ver_wanted;
-	u16 minor_ver_wanted;
-	u16 major_ver_found;
-	u16 minor_ver_found;
-
-	struct {
-		const char *path;
-		u16 major_ver;
-		u16 minor_ver;
-	} fallback;
-
 	u32 rsa_size;
 	u32 ucode_size;
-
 	u32 private_data_size;
 
 	bool loaded_via_gsc;
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index b5fbc2252784a..9ea2fe34e7d30 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1022,8 +1022,10 @@ static void cleanup_params(struct i915_gpu_coredump *error)
 
 static void cleanup_uc(struct intel_uc_coredump *uc)
 {
-	kfree(uc->guc_fw.path);
-	kfree(uc->huc_fw.path);
+	kfree(uc->guc_fw.file_selected.path);
+	kfree(uc->huc_fw.file_selected.path);
+	kfree(uc->guc_fw.file_wanted.path);
+	kfree(uc->huc_fw.file_wanted.path);
 	i915_vma_coredump_free(uc->guc.vma_log);
 	i915_vma_coredump_free(uc->guc.vma_ctb);
 
@@ -1705,12 +1707,10 @@ gt_record_uc(struct intel_gt_coredump *gt,
 	memcpy(&error_uc->guc_fw, &uc->guc.fw, sizeof(uc->guc.fw));
 	memcpy(&error_uc->huc_fw, &uc->huc.fw, sizeof(uc->huc.fw));
 
-	/* Non-default firmware paths will be specified by the modparam.
-	 * As modparams are generally accesible from the userspace make
-	 * explicit copies of the firmware paths.
-	 */
-	error_uc->guc_fw.path = kstrdup(uc->guc.fw.path, ALLOW_FAIL);
-	error_uc->huc_fw.path = kstrdup(uc->huc.fw.path, ALLOW_FAIL);
+	error_uc->guc_fw.file_selected.path = kstrdup(uc->guc.fw.file_selected.path, ALLOW_FAIL);
+	error_uc->huc_fw.file_selected.path = kstrdup(uc->huc.fw.file_selected.path, ALLOW_FAIL);
+	error_uc->guc_fw.file_wanted.path = kstrdup(uc->guc.fw.file_wanted.path, ALLOW_FAIL);
+	error_uc->huc_fw.file_wanted.path = kstrdup(uc->huc.fw.file_wanted.path, ALLOW_FAIL);
 
 	/*
 	 * Save the GuC log and include a timestamp reference for converting the
-- 
2.37.2

[PATCH v3 2/3] drm/i915/uc: Add patch level version number support

[John.C.Harrison]

From: John Harrison <John.C.Harrison@Intel.com>

With the move to un-versioned filenames, it becomes more difficult to
know exactly what version of a given firmware is being used. So add
the patch level version number to the debugfs output.

Also, support matching by patch level when selecting code paths for
firmware compatibility. While a patch level change cannot be backwards
breaking, it is potentially possible that a new feature only works
from a given patch level onwards (even though it was theoretically
added in an earlier version that bumped the major or minor version).

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
---
 .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 10 +++---
 drivers/gpu/drm/i915/gt/uc/intel_uc.c         |  6 ++--
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c      | 36 ++++++++++++++-----
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h      |  6 ++++
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h  |  8 +++--
 5 files changed, 47 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 04393932623c7..64c4e83153f47 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -1868,7 +1868,7 @@ int intel_guc_submission_init(struct intel_guc *guc)
 	if (guc->submission_initialized)
 		return 0;
 
-	if (guc->fw.file_selected.major_ver < 70) {
+	if (GET_UC_VER(guc) < MAKE_UC_VER(70, 0, 0)) {
 		ret = guc_lrc_desc_pool_create_v69(guc);
 		if (ret)
 			return ret;
@@ -2303,7 +2303,7 @@ static int register_context(struct intel_context *ce, bool loop)
 	GEM_BUG_ON(intel_context_is_child(ce));
 	trace_intel_context_register(ce);
 
-	if (guc->fw.file_selected.major_ver >= 70)
+	if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0))
 		ret = register_context_v70(guc, ce, loop);
 	else
 		ret = register_context_v69(guc, ce, loop);
@@ -2315,7 +2315,7 @@ static int register_context(struct intel_context *ce, bool loop)
 		set_context_registered(ce);
 		spin_unlock_irqrestore(&ce->guc_state.lock, flags);
 
-		if (guc->fw.file_selected.major_ver >= 70)
+		if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0))
 			guc_context_policy_init_v70(ce, loop);
 	}
 
@@ -2921,7 +2921,7 @@ static void __guc_context_set_preemption_timeout(struct intel_guc *guc,
 						 u16 guc_id,
 						 u32 preemption_timeout)
 {
-	if (guc->fw.file_selected.major_ver >= 70) {
+	if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0)) {
 		struct context_policy policy;
 
 		__guc_context_policy_start_klv(&policy, guc_id);
@@ -3186,7 +3186,7 @@ static int guc_context_alloc(struct intel_context *ce)
 static void __guc_context_set_prio(struct intel_guc *guc,
 				   struct intel_context *ce)
 {
-	if (guc->fw.file_selected.major_ver >= 70) {
+	if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0)) {
 		struct context_policy policy;
 
 		__guc_context_policy_start_klv(&policy, ce->guc_id.id);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index d965ac4832d60..abf4e142596d0 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -435,9 +435,11 @@ static void print_fw_ver(struct intel_uc *uc, struct intel_uc_fw *fw)
 {
 	struct drm_i915_private *i915 = uc_to_gt(uc)->i915;
 
-	drm_info(&i915->drm, "%s firmware %s version %u.%u\n",
+	drm_info(&i915->drm, "%s firmware %s version %u.%u.%u\n",
 		 intel_uc_fw_type_repr(fw->type), fw->file_selected.path,
-		 fw->file_selected.major_ver, fw->file_selected.minor_ver);
+		 fw->file_selected.major_ver,
+		 fw->file_selected.minor_ver,
+		 fw->file_selected.patch_ver);
 }
 
 static int __uc_init_hw(struct intel_uc *uc)
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 610f36f1b989a..af425916cdf64 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
@@ -447,10 +447,12 @@ static int check_gsc_manifest(const struct firmware *fw,
 			      struct intel_uc_fw *uc_fw)
 {
 	u32 *dw = (u32 *)fw->data;
-	u32 version = dw[HUC_GSC_VERSION_DW];
+	u32 version_hi = dw[HUC_GSC_VERSION_HI_DW];
+	u32 version_lo = dw[HUC_GSC_VERSION_LO_DW];
 
-	uc_fw->file_selected.major_ver = FIELD_GET(HUC_GSC_MAJOR_VER_MASK, version);
-	uc_fw->file_selected.minor_ver = FIELD_GET(HUC_GSC_MINOR_VER_MASK, version);
+	uc_fw->file_selected.major_ver = FIELD_GET(HUC_GSC_MAJOR_VER_HI_MASK, version_hi);
+	uc_fw->file_selected.minor_ver = FIELD_GET(HUC_GSC_MINOR_VER_HI_MASK, version_hi);
+	uc_fw->file_selected.patch_ver = FIELD_GET(HUC_GSC_PATCH_VER_LO_MASK, version_lo);
 
 	return 0;
 }
@@ -512,6 +514,8 @@ static int check_ccs_header(struct drm_i915_private *i915,
 						   css->sw_version);
 	uc_fw->file_selected.minor_ver = FIELD_GET(CSS_SW_VERSION_UC_MINOR,
 						   css->sw_version);
+	uc_fw->file_selected.patch_ver = FIELD_GET(CSS_SW_VERSION_UC_PATCH,
+						   css->sw_version);
 
 	if (uc_fw->type == INTEL_UC_FW_TYPE_GUC)
 		uc_fw->private_data_size = css->private_data_size;
@@ -1000,6 +1004,8 @@ size_t intel_uc_fw_copy_rsa(struct intel_uc_fw *uc_fw, void *dst, u32 max_len)
  */
 void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p)
 {
+	u32 ver_sel, ver_want;
+
 	drm_printf(p, "%s firmware: %s\n",
 		   intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_selected.path);
 	if (uc_fw->file_selected.path != uc_fw->file_wanted.path)
@@ -1007,13 +1013,25 @@ void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p)
 			   intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_wanted.path);
 	drm_printf(p, "\tstatus: %s\n",
 		   intel_uc_fw_status_repr(uc_fw->status));
-	if (uc_fw->file_wanted.major_ver)
-		drm_printf(p, "\tversion: wanted %u.%u, found %u.%u\n",
-			   uc_fw->file_wanted.major_ver, uc_fw->file_wanted.minor_ver,
-			   uc_fw->file_selected.major_ver, uc_fw->file_selected.minor_ver);
+	ver_sel = MAKE_UC_VER(uc_fw->file_selected.major_ver,
+			      uc_fw->file_selected.minor_ver,
+			      uc_fw->file_selected.patch_ver);
+	ver_want = MAKE_UC_VER(uc_fw->file_wanted.major_ver,
+			       uc_fw->file_wanted.minor_ver,
+			       uc_fw->file_wanted.patch_ver);
+	if (ver_sel < ver_want)
+		drm_printf(p, "\tversion: wanted %u.%u.%u, found %u.%u.%u\n",
+			   uc_fw->file_wanted.major_ver,
+			   uc_fw->file_wanted.minor_ver,
+			   uc_fw->file_wanted.patch_ver,
+			   uc_fw->file_selected.major_ver,
+			   uc_fw->file_selected.minor_ver,
+			   uc_fw->file_selected.patch_ver);
 	else
-		drm_printf(p, "\tversion: found %u.%u\n",
-			   uc_fw->file_selected.major_ver, uc_fw->file_selected.minor_ver);
+		drm_printf(p, "\tversion: found %u.%u.%u\n",
+			   uc_fw->file_selected.major_ver,
+			   uc_fw->file_selected.minor_ver,
+			   uc_fw->file_selected.patch_ver);
 	drm_printf(p, "\tuCode: %u bytes\n", uc_fw->ucode_size);
 	drm_printf(p, "\tRSA: %u bytes\n", uc_fw->rsa_size);
 }
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
index 344763c942e37..cb586f7df270b 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
@@ -73,6 +73,7 @@ struct intel_uc_fw_file {
 	const char *path;
 	u16 major_ver;
 	u16 minor_ver;
+	u16 patch_ver;
 };
 
 /*
@@ -108,6 +109,11 @@ struct intel_uc_fw {
 	bool loaded_via_gsc;
 };
 
+#define MAKE_UC_VER(maj, min, pat)	((pat) | ((min) << 8) | ((maj) << 16))
+#define GET_UC_VER(uc)			(MAKE_UC_VER((uc)->fw.file_selected.major_ver, \
+						     (uc)->fw.file_selected.minor_ver, \
+						     (uc)->fw.file_selected.patch_ver))
+
 #ifdef CONFIG_DRM_I915_DEBUG_GUC
 void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
 			       enum intel_uc_fw_status status);
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h
index b05e0e35b734c..7a411178bdbf2 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h
@@ -83,8 +83,10 @@ struct uc_css_header {
 } __packed;
 static_assert(sizeof(struct uc_css_header) == 128);
 
-#define HUC_GSC_VERSION_DW		44
-#define   HUC_GSC_MAJOR_VER_MASK	(0xFF << 0)
-#define   HUC_GSC_MINOR_VER_MASK	(0xFF << 16)
+#define HUC_GSC_VERSION_HI_DW		44
+#define   HUC_GSC_MAJOR_VER_HI_MASK	(0xFF << 0)
+#define   HUC_GSC_MINOR_VER_HI_MASK	(0xFF << 16)
+#define HUC_GSC_VERSION_LO_DW		45
+#define   HUC_GSC_PATCH_VER_LO_MASK	(0xFF << 0)
 
 #endif /* _INTEL_UC_FW_ABI_H */
-- 
2.37.2

[PATCH v3 3/3] drm/i915/uc: Enable version reduced firmware files for newest platforms

[John.C.Harrison]

From: John Harrison <John.C.Harrison@Intel.com>

Going forwards, the intention is for GuC firmware files to be named
for their major version only and HuC firmware files to have no version
number in the name at all. This patch adds those entries for DG1/2 and
ADL-P/S.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

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 af425916cdf64..78b1198bcf39b 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
@@ -72,11 +72,14 @@ void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
  * security fixes, etc. to be enabled.
  */
 #define INTEL_GUC_FIRMWARE_DEFS(fw_def, guc_maj, guc_mmp) \
-	fw_def(DG2,          0, guc_mmp(dg2,  70, 4, 1)) \
+	fw_def(DG2,          0, guc_maj(dg2,  70, 4)) \
+	fw_def(ALDERLAKE_P,  0, guc_maj(adlp, 70, 1)) \
 	fw_def(ALDERLAKE_P,  0, guc_mmp(adlp, 70, 1, 1)) \
 	fw_def(ALDERLAKE_P,  0, guc_mmp(adlp, 69, 0, 3)) \
+	fw_def(ALDERLAKE_S,  0, guc_maj(tgl,  70, 1)) \
 	fw_def(ALDERLAKE_S,  0, guc_mmp(tgl,  70, 1, 1)) \
 	fw_def(ALDERLAKE_S,  0, guc_mmp(tgl,  69, 0, 3)) \
+	fw_def(DG1,          0, guc_maj(dg1,  70, 1)) \
 	fw_def(DG1,          0, guc_mmp(dg1,  70, 1, 1)) \
 	fw_def(ROCKETLAKE,   0, guc_mmp(tgl,  70, 1, 1)) \
 	fw_def(TIGERLAKE,    0, guc_mmp(tgl,  70, 1, 1)) \
@@ -92,8 +95,11 @@ void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
 	fw_def(SKYLAKE,      0, guc_mmp(skl,  70, 1, 1))
 
 #define INTEL_HUC_FIRMWARE_DEFS(fw_def, huc_raw, huc_mmp) \
+	fw_def(ALDERLAKE_P,  0, huc_raw(tgl)) \
 	fw_def(ALDERLAKE_P,  0, huc_mmp(tgl,  7, 9, 3)) \
+	fw_def(ALDERLAKE_S,  0, huc_raw(tgl)) \
 	fw_def(ALDERLAKE_S,  0, huc_mmp(tgl,  7, 9, 3)) \
+	fw_def(DG1,          0, huc_raw(dg1)) \
 	fw_def(DG1,          0, huc_mmp(dg1,  7, 9, 3)) \
 	fw_def(ROCKETLAKE,   0, huc_mmp(tgl,  7, 9, 3)) \
 	fw_def(TIGERLAKE,    0, huc_mmp(tgl,  7, 9, 3)) \
-- 
2.37.2

Re: [Intel-gfx] [PATCH v3 2/3] drm/i915/uc: Add patch level version number support

[Ceraolo Spurio, Daniele]

On 8/26/2022 6:17 PM, John.C.Harrison@Intel.com wrote:
> From: John Harrison <John.C.Harrison@Intel.com>
>
> With the move to un-versioned filenames, it becomes more difficult to
> know exactly what version of a given firmware is being used. So add
> the patch level version number to the debugfs output.
>
> Also, support matching by patch level when selecting code paths for
> firmware compatibility. While a patch level change cannot be backwards
> breaking, it is potentially possible that a new feature only works
> from a given patch level onwards (even though it was theoretically
> added in an earlier version that bumped the major or minor version).
>
> Signed-off-by: John Harrison <John.C.Harrison@Intel.com>

Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>

> ---
>   .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 10 +++---
>   drivers/gpu/drm/i915/gt/uc/intel_uc.c         |  6 ++--
>   drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c      | 36 ++++++++++++++-----
>   drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h      |  6 ++++
>   drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h  |  8 +++--
>   5 files changed, 47 insertions(+), 19 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
> index 04393932623c7..64c4e83153f47 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
> @@ -1868,7 +1868,7 @@ int intel_guc_submission_init(struct intel_guc *guc)
>   	if (guc->submission_initialized)
>   		return 0;
>   
> -	if (guc->fw.file_selected.major_ver < 70) {
> +	if (GET_UC_VER(guc) < MAKE_UC_VER(70, 0, 0)) {
>   		ret = guc_lrc_desc_pool_create_v69(guc);
>   		if (ret)
>   			return ret;
> @@ -2303,7 +2303,7 @@ static int register_context(struct intel_context *ce, bool loop)
>   	GEM_BUG_ON(intel_context_is_child(ce));
>   	trace_intel_context_register(ce);
>   
> -	if (guc->fw.file_selected.major_ver >= 70)
> +	if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0))
>   		ret = register_context_v70(guc, ce, loop);
>   	else
>   		ret = register_context_v69(guc, ce, loop);
> @@ -2315,7 +2315,7 @@ static int register_context(struct intel_context *ce, bool loop)
>   		set_context_registered(ce);
>   		spin_unlock_irqrestore(&ce->guc_state.lock, flags);
>   
> -		if (guc->fw.file_selected.major_ver >= 70)
> +		if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0))
>   			guc_context_policy_init_v70(ce, loop);
>   	}
>   
> @@ -2921,7 +2921,7 @@ static void __guc_context_set_preemption_timeout(struct intel_guc *guc,
>   						 u16 guc_id,
>   						 u32 preemption_timeout)
>   {
> -	if (guc->fw.file_selected.major_ver >= 70) {
> +	if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0)) {
>   		struct context_policy policy;
>   
>   		__guc_context_policy_start_klv(&policy, guc_id);
> @@ -3186,7 +3186,7 @@ static int guc_context_alloc(struct intel_context *ce)
>   static void __guc_context_set_prio(struct intel_guc *guc,
>   				   struct intel_context *ce)
>   {
> -	if (guc->fw.file_selected.major_ver >= 70) {
> +	if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0)) {
>   		struct context_policy policy;
>   
>   		__guc_context_policy_start_klv(&policy, ce->guc_id.id);
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
> index d965ac4832d60..abf4e142596d0 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
> @@ -435,9 +435,11 @@ static void print_fw_ver(struct intel_uc *uc, struct intel_uc_fw *fw)
>   {
>   	struct drm_i915_private *i915 = uc_to_gt(uc)->i915;
>   
> -	drm_info(&i915->drm, "%s firmware %s version %u.%u\n",
> +	drm_info(&i915->drm, "%s firmware %s version %u.%u.%u\n",
>   		 intel_uc_fw_type_repr(fw->type), fw->file_selected.path,
> -		 fw->file_selected.major_ver, fw->file_selected.minor_ver);
> +		 fw->file_selected.major_ver,
> +		 fw->file_selected.minor_ver,
> +		 fw->file_selected.patch_ver);
>   }
>   
>   static int __uc_init_hw(struct intel_uc *uc)
> 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 610f36f1b989a..af425916cdf64 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
> @@ -447,10 +447,12 @@ static int check_gsc_manifest(const struct firmware *fw,
>   			      struct intel_uc_fw *uc_fw)
>   {
>   	u32 *dw = (u32 *)fw->data;
> -	u32 version = dw[HUC_GSC_VERSION_DW];
> +	u32 version_hi = dw[HUC_GSC_VERSION_HI_DW];
> +	u32 version_lo = dw[HUC_GSC_VERSION_LO_DW];
>   
> -	uc_fw->file_selected.major_ver = FIELD_GET(HUC_GSC_MAJOR_VER_MASK, version);
> -	uc_fw->file_selected.minor_ver = FIELD_GET(HUC_GSC_MINOR_VER_MASK, version);
> +	uc_fw->file_selected.major_ver = FIELD_GET(HUC_GSC_MAJOR_VER_HI_MASK, version_hi);
> +	uc_fw->file_selected.minor_ver = FIELD_GET(HUC_GSC_MINOR_VER_HI_MASK, version_hi);
> +	uc_fw->file_selected.patch_ver = FIELD_GET(HUC_GSC_PATCH_VER_LO_MASK, version_lo);
>   
>   	return 0;
>   }
> @@ -512,6 +514,8 @@ static int check_ccs_header(struct drm_i915_private *i915,
>   						   css->sw_version);
>   	uc_fw->file_selected.minor_ver = FIELD_GET(CSS_SW_VERSION_UC_MINOR,
>   						   css->sw_version);
> +	uc_fw->file_selected.patch_ver = FIELD_GET(CSS_SW_VERSION_UC_PATCH,
> +						   css->sw_version);
>   
>   	if (uc_fw->type == INTEL_UC_FW_TYPE_GUC)
>   		uc_fw->private_data_size = css->private_data_size;
> @@ -1000,6 +1004,8 @@ size_t intel_uc_fw_copy_rsa(struct intel_uc_fw *uc_fw, void *dst, u32 max_len)
>    */
>   void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p)
>   {
> +	u32 ver_sel, ver_want;
> +
>   	drm_printf(p, "%s firmware: %s\n",
>   		   intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_selected.path);
>   	if (uc_fw->file_selected.path != uc_fw->file_wanted.path)
> @@ -1007,13 +1013,25 @@ void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p)
>   			   intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_wanted.path);
>   	drm_printf(p, "\tstatus: %s\n",
>   		   intel_uc_fw_status_repr(uc_fw->status));
> -	if (uc_fw->file_wanted.major_ver)
> -		drm_printf(p, "\tversion: wanted %u.%u, found %u.%u\n",
> -			   uc_fw->file_wanted.major_ver, uc_fw->file_wanted.minor_ver,
> -			   uc_fw->file_selected.major_ver, uc_fw->file_selected.minor_ver);
> +	ver_sel = MAKE_UC_VER(uc_fw->file_selected.major_ver,
> +			      uc_fw->file_selected.minor_ver,
> +			      uc_fw->file_selected.patch_ver);
> +	ver_want = MAKE_UC_VER(uc_fw->file_wanted.major_ver,
> +			       uc_fw->file_wanted.minor_ver,
> +			       uc_fw->file_wanted.patch_ver);
> +	if (ver_sel < ver_want)
> +		drm_printf(p, "\tversion: wanted %u.%u.%u, found %u.%u.%u\n",
> +			   uc_fw->file_wanted.major_ver,
> +			   uc_fw->file_wanted.minor_ver,
> +			   uc_fw->file_wanted.patch_ver,
> +			   uc_fw->file_selected.major_ver,
> +			   uc_fw->file_selected.minor_ver,
> +			   uc_fw->file_selected.patch_ver);
>   	else
> -		drm_printf(p, "\tversion: found %u.%u\n",
> -			   uc_fw->file_selected.major_ver, uc_fw->file_selected.minor_ver);
> +		drm_printf(p, "\tversion: found %u.%u.%u\n",
> +			   uc_fw->file_selected.major_ver,
> +			   uc_fw->file_selected.minor_ver,
> +			   uc_fw->file_selected.patch_ver);
>   	drm_printf(p, "\tuCode: %u bytes\n", uc_fw->ucode_size);
>   	drm_printf(p, "\tRSA: %u bytes\n", uc_fw->rsa_size);
>   }
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
> index 344763c942e37..cb586f7df270b 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
> @@ -73,6 +73,7 @@ struct intel_uc_fw_file {
>   	const char *path;
>   	u16 major_ver;
>   	u16 minor_ver;
> +	u16 patch_ver;
>   };
>   
>   /*
> @@ -108,6 +109,11 @@ struct intel_uc_fw {
>   	bool loaded_via_gsc;
>   };
>   
> +#define MAKE_UC_VER(maj, min, pat)	((pat) | ((min) << 8) | ((maj) << 16))
> +#define GET_UC_VER(uc)			(MAKE_UC_VER((uc)->fw.file_selected.major_ver, \
> +						     (uc)->fw.file_selected.minor_ver, \
> +						     (uc)->fw.file_selected.patch_ver))
> +
>   #ifdef CONFIG_DRM_I915_DEBUG_GUC
>   void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
>   			       enum intel_uc_fw_status status);
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h
> index b05e0e35b734c..7a411178bdbf2 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h
> @@ -83,8 +83,10 @@ struct uc_css_header {
>   } __packed;
>   static_assert(sizeof(struct uc_css_header) == 128);
>   
> -#define HUC_GSC_VERSION_DW		44
> -#define   HUC_GSC_MAJOR_VER_MASK	(0xFF << 0)
> -#define   HUC_GSC_MINOR_VER_MASK	(0xFF << 16)
> +#define HUC_GSC_VERSION_HI_DW		44
> +#define   HUC_GSC_MAJOR_VER_HI_MASK	(0xFF << 0)
> +#define   HUC_GSC_MINOR_VER_HI_MASK	(0xFF << 16)
> +#define HUC_GSC_VERSION_LO_DW		45
> +#define   HUC_GSC_PATCH_VER_LO_MASK	(0xFF << 0)
>   
>   #endif /* _INTEL_UC_FW_ABI_H */

Re: [Intel-gfx] [PATCH v3 3/3] drm/i915/uc: Enable version reduced firmware files for newest platforms

[Ceraolo Spurio, Daniele]

On 8/26/2022 6:17 PM, John.C.Harrison@Intel.com wrote:
> From: John Harrison <John.C.Harrison@Intel.com>
>
> Going forwards, the intention is for GuC firmware files to be named
> for their major version only and HuC firmware files to have no version
> number in the name at all. This patch adds those entries for DG1/2 and
> ADL-P/S.
>
> Signed-off-by: John Harrison <John.C.Harrison@Intel.com>

Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>

However, looks like a new GuC minor version might land in the next 
couple of days, so IMO better wait until that is confirmed before 
merging this so we can do a single pull request to linux-firmware.

Daniele

> ---
>   drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c | 8 +++++++-
>   1 file changed, 7 insertions(+), 1 deletion(-)
>
> 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 af425916cdf64..78b1198bcf39b 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
> @@ -72,11 +72,14 @@ void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
>    * security fixes, etc. to be enabled.
>    */
>   #define INTEL_GUC_FIRMWARE_DEFS(fw_def, guc_maj, guc_mmp) \
> -	fw_def(DG2,          0, guc_mmp(dg2,  70, 4, 1)) \
> +	fw_def(DG2,          0, guc_maj(dg2,  70, 4)) \
> +	fw_def(ALDERLAKE_P,  0, guc_maj(adlp, 70, 1)) \
>   	fw_def(ALDERLAKE_P,  0, guc_mmp(adlp, 70, 1, 1)) \
>   	fw_def(ALDERLAKE_P,  0, guc_mmp(adlp, 69, 0, 3)) \
> +	fw_def(ALDERLAKE_S,  0, guc_maj(tgl,  70, 1)) \
>   	fw_def(ALDERLAKE_S,  0, guc_mmp(tgl,  70, 1, 1)) \
>   	fw_def(ALDERLAKE_S,  0, guc_mmp(tgl,  69, 0, 3)) \
> +	fw_def(DG1,          0, guc_maj(dg1,  70, 1)) \
>   	fw_def(DG1,          0, guc_mmp(dg1,  70, 1, 1)) \
>   	fw_def(ROCKETLAKE,   0, guc_mmp(tgl,  70, 1, 1)) \
>   	fw_def(TIGERLAKE,    0, guc_mmp(tgl,  70, 1, 1)) \
> @@ -92,8 +95,11 @@ void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
>   	fw_def(SKYLAKE,      0, guc_mmp(skl,  70, 1, 1))
>   
>   #define INTEL_HUC_FIRMWARE_DEFS(fw_def, huc_raw, huc_mmp) \
> +	fw_def(ALDERLAKE_P,  0, huc_raw(tgl)) \
>   	fw_def(ALDERLAKE_P,  0, huc_mmp(tgl,  7, 9, 3)) \
> +	fw_def(ALDERLAKE_S,  0, huc_raw(tgl)) \
>   	fw_def(ALDERLAKE_S,  0, huc_mmp(tgl,  7, 9, 3)) \
> +	fw_def(DG1,          0, huc_raw(dg1)) \
>   	fw_def(DG1,          0, huc_mmp(dg1,  7, 9, 3)) \
>   	fw_def(ROCKETLAKE,   0, huc_mmp(tgl,  7, 9, 3)) \
>   	fw_def(TIGERLAKE,    0, huc_mmp(tgl,  7, 9, 3)) \

Re: [Intel-gfx] [PATCH v3 3/3] drm/i915/uc: Enable version reduced firmware files for newest platforms

[Ceraolo Spurio, Daniele]

On 9/6/2022 1:29 PM, Ceraolo Spurio, Daniele wrote:
>
>
> On 8/26/2022 6:17 PM, John.C.Harrison@Intel.com wrote:
>> From: John Harrison <John.C.Harrison@Intel.com>
>>
>> Going forwards, the intention is for GuC firmware files to be named
>> for their major version only and HuC firmware files to have no version
>> number in the name at all. This patch adds those entries for DG1/2 and
>> ADL-P/S.
>>
>> Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
>
> Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
>
> However, looks like a new GuC minor version might land in the next 
> couple of days, so IMO better wait until that is confirmed before 
> merging this so we can do a single pull request to linux-firmware.

I've re-sent the first 2 patches by themselves for CI and merged them. 
Will close on the new blob in the next couple of days and then merge 
this as well.

Daniele

>
> Daniele
>
>> ---
>>   drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c | 8 +++++++-
>>   1 file changed, 7 insertions(+), 1 deletion(-)
>>
>> 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 af425916cdf64..78b1198bcf39b 100644
>> --- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
>> +++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
>> @@ -72,11 +72,14 @@ void intel_uc_fw_change_status(struct intel_uc_fw 
>> *uc_fw,
>>    * security fixes, etc. to be enabled.
>>    */
>>   #define INTEL_GUC_FIRMWARE_DEFS(fw_def, guc_maj, guc_mmp) \
>> -    fw_def(DG2,          0, guc_mmp(dg2,  70, 4, 1)) \
>> +    fw_def(DG2,          0, guc_maj(dg2,  70, 4)) \
>> +    fw_def(ALDERLAKE_P,  0, guc_maj(adlp, 70, 1)) \
>>       fw_def(ALDERLAKE_P,  0, guc_mmp(adlp, 70, 1, 1)) \
>>       fw_def(ALDERLAKE_P,  0, guc_mmp(adlp, 69, 0, 3)) \
>> +    fw_def(ALDERLAKE_S,  0, guc_maj(tgl,  70, 1)) \
>>       fw_def(ALDERLAKE_S,  0, guc_mmp(tgl,  70, 1, 1)) \
>>       fw_def(ALDERLAKE_S,  0, guc_mmp(tgl,  69, 0, 3)) \
>> +    fw_def(DG1,          0, guc_maj(dg1,  70, 1)) \
>>       fw_def(DG1,          0, guc_mmp(dg1,  70, 1, 1)) \
>>       fw_def(ROCKETLAKE,   0, guc_mmp(tgl,  70, 1, 1)) \
>>       fw_def(TIGERLAKE,    0, guc_mmp(tgl,  70, 1, 1)) \
>> @@ -92,8 +95,11 @@ void intel_uc_fw_change_status(struct intel_uc_fw 
>> *uc_fw,
>>       fw_def(SKYLAKE,      0, guc_mmp(skl,  70, 1, 1))
>>     #define INTEL_HUC_FIRMWARE_DEFS(fw_def, huc_raw, huc_mmp) \
>> +    fw_def(ALDERLAKE_P,  0, huc_raw(tgl)) \
>>       fw_def(ALDERLAKE_P,  0, huc_mmp(tgl,  7, 9, 3)) \
>> +    fw_def(ALDERLAKE_S,  0, huc_raw(tgl)) \
>>       fw_def(ALDERLAKE_S,  0, huc_mmp(tgl,  7, 9, 3)) \
>> +    fw_def(DG1,          0, huc_raw(dg1)) \
>>       fw_def(DG1,          0, huc_mmp(dg1,  7, 9, 3)) \
>>       fw_def(ROCKETLAKE,   0, huc_mmp(tgl,  7, 9, 3)) \
>>       fw_def(TIGERLAKE,    0, huc_mmp(tgl,  7, 9, 3)) \
>