[PATCH v3 0/3] More GuC firmware version improvements

[PATCH v3 0/3] More GuC firmware version improvements

[John.C.Harrison]

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

Start using the 'submission API version' for deciding which GuC API to
use in the submission code.

Correct version number manipulation code to support full 32bit
major/minor/patch components, except for GuC which is guaranteed to be
8bit safe.

Other minor code clean ups around version number handling.

v2: Fix some typos, better naming, an extra comment and a bunch of
refactoring of the GuC version number handling (review feedback by
Daniele)
v3: Fix function name typo (review feedback by Daniele)

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>


John Harrison (3):
  drm/i915/uc: Rationalise delimiters in filename macros
  drm/i915/uc: More refactoring of UC version numbers
  drm/i915/guc: Use GuC submission API version number

 drivers/gpu/drm/i915/gt/uc/intel_guc.h        |  11 +
 .../gpu/drm/i915/gt/uc/intel_guc_submission.c |  15 +-
 drivers/gpu/drm/i915/gt/uc/intel_uc.c         |   6 +-
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c      | 206 +++++++++++++-----
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h      |  15 +-
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h  |   3 +-
 6 files changed, 183 insertions(+), 73 deletions(-)

-- 
2.37.3

[PATCH v3 1/3] drm/i915/uc: Rationalise delimiters in filename macros

[John.C.Harrison]

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

The way delimiters (underscores and dots) were added to the UC
filenames was different for different types of delimiter. Rationalise
them to all be done the same way - implicitly in the concatenation
macro rather than explicitly in the file name prefix.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 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 31613c7e0838b..848304b2f2e30 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
@@ -118,35 +118,35 @@ void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw,
  */
 #define __MAKE_UC_FW_PATH_BLANK(prefix_, name_) \
 	"i915/" \
-	__stringify(prefix_) name_ ".bin"
+	__stringify(prefix_) "_" name_ ".bin"
 
 #define __MAKE_UC_FW_PATH_MAJOR(prefix_, name_, major_) \
 	"i915/" \
-	__stringify(prefix_) name_ \
+	__stringify(prefix_) "_" name_ "_" \
 	__stringify(major_) ".bin"
 
 #define __MAKE_UC_FW_PATH_MMP(prefix_, name_, major_, minor_, patch_) \
 	"i915/" \
-	__stringify(prefix_) name_ \
+	__stringify(prefix_) "_" name_  "_" \
 	__stringify(major_) "." \
 	__stringify(minor_) "." \
 	__stringify(patch_) ".bin"
 
 /* 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_)
+	__MAKE_UC_FW_PATH_MAJOR(prefix_, "guc", major_)
 
 #define MAKE_GUC_FW_PATH_MMP(prefix_, major_, minor_, patch_) \
-	__MAKE_UC_FW_PATH_MMP(prefix_, "_guc_", major_, minor_, patch_)
+	__MAKE_UC_FW_PATH_MMP(prefix_, "guc", major_, minor_, patch_)
 
 #define MAKE_HUC_FW_PATH_BLANK(prefix_) \
-	__MAKE_UC_FW_PATH_BLANK(prefix_, "_huc")
+	__MAKE_UC_FW_PATH_BLANK(prefix_, "huc")
 
 #define MAKE_HUC_FW_PATH_GSC(prefix_) \
-	__MAKE_UC_FW_PATH_BLANK(prefix_, "_huc_gsc")
+	__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_)
+	__MAKE_UC_FW_PATH_MMP(prefix_, "huc", major_, minor_, patch_)
 
 /*
  * All blobs need to be declared via MODULE_FIRMWARE().
-- 
2.37.3

[PATCH v3 2/3] drm/i915/uc: More refactoring of UC version numbers

[John.C.Harrison]

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

As a precursor to a coming change (for adding a GuC submission API
version), abstract the UC version number into its own private
structure separate to the firmware filename.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_uc.c    |  6 +-
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c | 76 +++++++++++-------------
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h | 15 +++--
 3 files changed, 48 insertions(+), 49 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_uc.c b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
index 2a508b137e900..4f4b519e12c1b 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc.c
@@ -437,9 +437,9 @@ static void print_fw_ver(struct intel_uc *uc, struct intel_uc_fw *fw)
 
 	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.patch_ver);
+		 fw->file_selected.ver.major,
+		 fw->file_selected.ver.minor,
+		 fw->file_selected.ver.patch);
 }
 
 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 848304b2f2e30..1c6a520cf4cd0 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
@@ -278,8 +278,8 @@ __uc_fw_auto_select(struct drm_i915_private *i915, struct intel_uc_fw *uc_fw)
 
 		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;
+		uc_fw->file_wanted.ver.major = blob->major;
+		uc_fw->file_wanted.ver.minor = blob->minor;
 		uc_fw->loaded_via_gsc = blob->loaded_via_gsc;
 		found = true;
 		break;
@@ -439,28 +439,28 @@ static void __force_fw_fetch_failures(struct intel_uc_fw *uc_fw, int e)
 		uc_fw->user_overridden = user;
 	} else if (i915_inject_probe_error(i915, e)) {
 		/* require next major version */
-		uc_fw->file_wanted.major_ver += 1;
-		uc_fw->file_wanted.minor_ver = 0;
+		uc_fw->file_wanted.ver.major += 1;
+		uc_fw->file_wanted.ver.minor = 0;
 		uc_fw->user_overridden = user;
 	} else if (i915_inject_probe_error(i915, e)) {
 		/* require next minor version */
-		uc_fw->file_wanted.minor_ver += 1;
+		uc_fw->file_wanted.ver.minor += 1;
 		uc_fw->user_overridden = user;
-	} else if (uc_fw->file_wanted.major_ver &&
+	} else if (uc_fw->file_wanted.ver.major &&
 		   i915_inject_probe_error(i915, e)) {
 		/* require prev major version */
-		uc_fw->file_wanted.major_ver -= 1;
-		uc_fw->file_wanted.minor_ver = 0;
+		uc_fw->file_wanted.ver.major -= 1;
+		uc_fw->file_wanted.ver.minor = 0;
 		uc_fw->user_overridden = user;
-	} else if (uc_fw->file_wanted.minor_ver &&
+	} else if (uc_fw->file_wanted.ver.minor &&
 		   i915_inject_probe_error(i915, e)) {
 		/* require prev minor version - hey, this should work! */
-		uc_fw->file_wanted.minor_ver -= 1;
+		uc_fw->file_wanted.ver.minor -= 1;
 		uc_fw->user_overridden = user;
 	} else if (user && i915_inject_probe_error(i915, e)) {
 		/* officially unsupported platform */
-		uc_fw->file_wanted.major_ver = 0;
-		uc_fw->file_wanted.minor_ver = 0;
+		uc_fw->file_wanted.ver.major = 0;
+		uc_fw->file_wanted.ver.minor = 0;
 		uc_fw->user_overridden = true;
 	}
 }
@@ -472,9 +472,9 @@ static int check_gsc_manifest(const struct firmware *fw,
 	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_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);
+	uc_fw->file_selected.ver.major = FIELD_GET(HUC_GSC_MAJOR_VER_HI_MASK, version_hi);
+	uc_fw->file_selected.ver.minor = FIELD_GET(HUC_GSC_MINOR_VER_HI_MASK, version_hi);
+	uc_fw->file_selected.ver.patch = FIELD_GET(HUC_GSC_PATCH_VER_LO_MASK, version_lo);
 
 	return 0;
 }
@@ -533,11 +533,11 @@ static int check_ccs_header(struct intel_gt *gt,
 	}
 
 	/* Get version numbers from the CSS header */
-	uc_fw->file_selected.major_ver = FIELD_GET(CSS_SW_VERSION_UC_MAJOR,
+	uc_fw->file_selected.ver.major = FIELD_GET(CSS_SW_VERSION_UC_MAJOR,
 						   css->sw_version);
-	uc_fw->file_selected.minor_ver = FIELD_GET(CSS_SW_VERSION_UC_MINOR,
+	uc_fw->file_selected.ver.minor = FIELD_GET(CSS_SW_VERSION_UC_MINOR,
 						   css->sw_version);
-	uc_fw->file_selected.patch_ver = FIELD_GET(CSS_SW_VERSION_UC_PATCH,
+	uc_fw->file_selected.ver.patch = FIELD_GET(CSS_SW_VERSION_UC_PATCH,
 						   css->sw_version);
 
 	if (uc_fw->type == INTEL_UC_FW_TYPE_GUC)
@@ -622,19 +622,19 @@ int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw)
 	if (err)
 		goto fail;
 
-	if (uc_fw->file_wanted.major_ver) {
+	if (uc_fw->file_wanted.ver.major) {
 		/* Check the file's major version was as it claimed */
-		if (uc_fw->file_selected.major_ver != uc_fw->file_wanted.major_ver) {
+		if (uc_fw->file_selected.ver.major != uc_fw->file_wanted.ver.major) {
 			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);
+				   uc_fw->file_selected.ver.major, uc_fw->file_selected.ver.minor,
+				   uc_fw->file_wanted.ver.major, uc_fw->file_wanted.ver.minor);
 			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)
+			if (uc_fw->file_selected.ver.minor < uc_fw->file_wanted.ver.minor)
 				old_ver = true;
 		}
 	}
@@ -647,9 +647,9 @@ int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw)
 			   "%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_wanted.ver.major, uc_fw->file_wanted.ver.minor,
 			   uc_fw->file_selected.path,
-			   uc_fw->file_selected.major_ver, uc_fw->file_selected.minor_ver);
+			   uc_fw->file_selected.ver.major, uc_fw->file_selected.ver.minor);
 		drm_info(&i915->drm,
 			 "Consider updating your linux-firmware pkg or downloading from %s\n",
 			 INTEL_UC_FIRMWARE_URL);
@@ -1064,25 +1064,21 @@ 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));
-	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);
+	ver_sel = MAKE_UC_VER_STRUCT(uc_fw->file_selected.ver);
+	ver_want = MAKE_UC_VER_STRUCT(uc_fw->file_wanted.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);
+			   uc_fw->file_wanted.ver.major,
+			   uc_fw->file_wanted.ver.minor,
+			   uc_fw->file_wanted.ver.patch,
+			   uc_fw->file_selected.ver.major,
+			   uc_fw->file_selected.ver.minor,
+			   uc_fw->file_selected.ver.patch);
 	else
 		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);
+			   uc_fw->file_selected.ver.major,
+			   uc_fw->file_selected.ver.minor,
+			   uc_fw->file_selected.ver.patch);
 	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 bc898ba5355dc..6501d6f1fbdff 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
@@ -65,6 +65,12 @@ enum intel_uc_fw_type {
 };
 #define INTEL_UC_FW_NUM_TYPES 2
 
+struct intel_uc_fw_ver {
+	u16 major;
+	u16 minor;
+	u16 patch;
+};
+
 /*
  * 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.
@@ -72,9 +78,7 @@ enum intel_uc_fw_type {
  */
 struct intel_uc_fw_file {
 	const char *path;
-	u16 major_ver;
-	u16 minor_ver;
-	u16 patch_ver;
+	struct intel_uc_fw_ver ver;
 };
 
 /*
@@ -111,9 +115,8 @@ struct intel_uc_fw {
 };
 
 #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))
+#define MAKE_UC_VER_STRUCT(ver)		MAKE_UC_VER((ver).major, (ver).minor, (ver).patch)
+#define GET_UC_VER(uc)			(MAKE_UC_VER_STRUCT((uc)->fw.file_selected.ver))
 
 /*
  * When we load the uC binaries, we pin them in a reserved section at the top of
-- 
2.37.3

[PATCH v3 3/3] drm/i915/guc: Use GuC submission API version number

[John.C.Harrison]

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

The GuC firmware includes an extra version number to specify the
submission API level. So use that rather than the main firmware
version number for submission related checks.

Also, while it is guaranteed that GuC version number components are
only 8-bits in size, other firmwares do not have that restriction. So
stop making assumptions about them generically fitting in a u16
individually, or in a u32 as a combined 8.8.8.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
---
 drivers/gpu/drm/i915/gt/uc/intel_guc.h        |  11 ++
 .../gpu/drm/i915/gt/uc/intel_guc_submission.c |  15 ++-
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c      | 124 ++++++++++++++++--
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h      |  10 +-
 drivers/gpu/drm/i915/gt/uc/intel_uc_fw_abi.h  |   3 +-
 5 files changed, 137 insertions(+), 26 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
index 1bb3f98292866..bb4dfe707a7d0 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
@@ -158,6 +158,9 @@ struct intel_guc {
 	bool submission_selected;
 	/** @submission_initialized: tracks whether GuC submission has been initialised */
 	bool submission_initialized;
+	/** @submission_version: Submission API version of the currently loaded firmware */
+	struct intel_uc_fw_ver submission_version;
+
 	/**
 	 * @rc_supported: tracks whether we support GuC rc on the current platform
 	 */
@@ -268,6 +271,14 @@ struct intel_guc {
 #endif
 };
 
+/*
+ * GuC version number components are only 8-bit, so converting to a 32bit 8.8.8
+ * integer works.
+ */
+#define MAKE_GUC_VER(maj, min, pat)	(((maj) << 16) | ((min) << 8) | (pat))
+#define MAKE_GUC_VER_STRUCT(ver)	MAKE_GUC_VER((ver).major, (ver).minor, (ver).patch)
+#define GUC_SUBMIT_VER(guc)		MAKE_GUC_VER_STRUCT((guc)->submission_version)
+
 static inline struct intel_guc *log_to_guc(struct intel_guc_log *log)
 {
 	return container_of(log, struct intel_guc, log);
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 0a42f1807f52c..53f7f599cde3a 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -1890,7 +1890,7 @@ int intel_guc_submission_init(struct intel_guc *guc)
 	if (guc->submission_initialized)
 		return 0;
 
-	if (GET_UC_VER(guc) < MAKE_UC_VER(70, 0, 0)) {
+	if (GUC_SUBMIT_VER(guc) < MAKE_GUC_VER(1, 0, 0)) {
 		ret = guc_lrc_desc_pool_create_v69(guc);
 		if (ret)
 			return ret;
@@ -2330,7 +2330,7 @@ static int register_context(struct intel_context *ce, bool loop)
 	GEM_BUG_ON(intel_context_is_child(ce));
 	trace_intel_context_register(ce);
 
-	if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0))
+	if (GUC_SUBMIT_VER(guc) >= MAKE_GUC_VER(1, 0, 0))
 		ret = register_context_v70(guc, ce, loop);
 	else
 		ret = register_context_v69(guc, ce, loop);
@@ -2342,7 +2342,7 @@ static int register_context(struct intel_context *ce, bool loop)
 		set_context_registered(ce);
 		spin_unlock_irqrestore(&ce->guc_state.lock, flags);
 
-		if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0))
+		if (GUC_SUBMIT_VER(guc) >= MAKE_GUC_VER(1, 0, 0))
 			guc_context_policy_init_v70(ce, loop);
 	}
 
@@ -2956,7 +2956,7 @@ static void __guc_context_set_preemption_timeout(struct intel_guc *guc,
 						 u16 guc_id,
 						 u32 preemption_timeout)
 {
-	if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0)) {
+	if (GUC_SUBMIT_VER(guc) >= MAKE_GUC_VER(1, 0, 0)) {
 		struct context_policy policy;
 
 		__guc_context_policy_start_klv(&policy, guc_id);
@@ -3283,7 +3283,7 @@ static int guc_context_alloc(struct intel_context *ce)
 static void __guc_context_set_prio(struct intel_guc *guc,
 				   struct intel_context *ce)
 {
-	if (GET_UC_VER(guc) >= MAKE_UC_VER(70, 0, 0)) {
+	if (GUC_SUBMIT_VER(guc) >= MAKE_GUC_VER(1, 0, 0)) {
 		struct context_policy policy;
 
 		__guc_context_policy_start_klv(&policy, ce->guc_id.id);
@@ -4366,7 +4366,7 @@ static int guc_init_global_schedule_policy(struct intel_guc *guc)
 	intel_wakeref_t wakeref;
 	int ret = 0;
 
-	if (GET_UC_VER(guc) < MAKE_UC_VER(70, 3, 0))
+	if (GUC_SUBMIT_VER(guc) < MAKE_GUC_VER(1, 1, 0))
 		return 0;
 
 	__guc_scheduling_policy_start_klv(&policy);
@@ -4905,6 +4905,9 @@ void intel_guc_submission_print_info(struct intel_guc *guc,
 	if (!sched_engine)
 		return;
 
+	drm_printf(p, "GuC Submission API Version: %d.%d.%d\n",
+		   guc->submission_version.major, guc->submission_version.minor,
+		   guc->submission_version.patch);
 	drm_printf(p, "GuC Number Outstanding Submission G2H: %u\n",
 		   atomic_read(&guc->outstanding_submission_g2h));
 	drm_printf(p, "GuC tasklet count: %u\n",
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 1c6a520cf4cd0..6c83a8b66c9e3 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c
@@ -479,6 +479,62 @@ static int check_gsc_manifest(const struct firmware *fw,
 	return 0;
 }
 
+static void uc_unpack_css_version(struct intel_uc_fw_ver *ver, u32 css_value)
+{
+	/* Get version numbers from the CSS header */
+	ver->major = FIELD_GET(CSS_SW_VERSION_UC_MAJOR, css_value);
+	ver->minor = FIELD_GET(CSS_SW_VERSION_UC_MINOR, css_value);
+	ver->patch = FIELD_GET(CSS_SW_VERSION_UC_PATCH, css_value);
+}
+
+static void guc_read_css_info(struct intel_uc_fw *uc_fw, struct uc_css_header *css)
+{
+	struct intel_guc *guc = container_of(uc_fw, struct intel_guc, fw);
+
+	/*
+	 * The GuC firmware includes an extra version number to specify the
+	 * submission API level. This allows submission code to work with
+	 * multiple GuC versions without having to know the absolute firmware
+	 * version number (there are likely to be multiple firmware releases
+	 * which all support the same submission API level).
+	 *
+	 * Note that the spec for the CSS header defines this version number
+	 * as 'vf_version' as it was originally intended for virtualisation.
+	 * However, it is applicable to native submission as well.
+	 *
+	 * Unfortunately, due to an oversight, this version number was only
+	 * exposed in the CSS header from v70.6.0.
+	 */
+	if (uc_fw->file_selected.ver.major >= 70) {
+		if (uc_fw->file_selected.ver.minor >= 6) {
+			/* v70.6.0 adds CSS header support */
+			uc_unpack_css_version(&guc->submission_version, css->vf_version);
+		} else if (uc_fw->file_selected.ver.minor >= 3) {
+			/* v70.3.0 introduced v1.1.0 */
+			guc->submission_version.major = 1;
+			guc->submission_version.minor = 1;
+			guc->submission_version.patch = 0;
+		} else {
+			/* v70.0.0 introduced v1.0.0 */
+			guc->submission_version.major = 1;
+			guc->submission_version.minor = 0;
+			guc->submission_version.patch = 0;
+		}
+	} else if (uc_fw->file_selected.ver.major >= 69) {
+		/* v69.0.0 introduced v0.10.0 */
+		guc->submission_version.major = 0;
+		guc->submission_version.minor = 10;
+		guc->submission_version.patch = 0;
+	} else {
+		/* Prior versions were v0.1.0 */
+		guc->submission_version.major = 0;
+		guc->submission_version.minor = 1;
+		guc->submission_version.patch = 0;
+	}
+
+	uc_fw->private_data_size = css->private_data_size;
+}
+
 static int check_ccs_header(struct intel_gt *gt,
 			    const struct firmware *fw,
 			    struct intel_uc_fw *uc_fw)
@@ -532,20 +588,50 @@ static int check_ccs_header(struct intel_gt *gt,
 		return -E2BIG;
 	}
 
-	/* Get version numbers from the CSS header */
-	uc_fw->file_selected.ver.major = FIELD_GET(CSS_SW_VERSION_UC_MAJOR,
-						   css->sw_version);
-	uc_fw->file_selected.ver.minor = FIELD_GET(CSS_SW_VERSION_UC_MINOR,
-						   css->sw_version);
-	uc_fw->file_selected.ver.patch = FIELD_GET(CSS_SW_VERSION_UC_PATCH,
-						   css->sw_version);
+	uc_unpack_css_version(&uc_fw->file_selected.ver, css->sw_version);
 
 	if (uc_fw->type == INTEL_UC_FW_TYPE_GUC)
-		uc_fw->private_data_size = css->private_data_size;
+		guc_read_css_info(uc_fw, css);
 
 	return 0;
 }
 
+static bool is_ver_8bit(struct intel_uc_fw_ver *ver)
+{
+	return ver->major < 0xFF && ver->minor < 0xFF && ver->patch < 0xFF;
+}
+
+static bool guc_check_version_range(struct intel_uc_fw *uc_fw)
+{
+	struct intel_guc *guc = container_of(uc_fw, struct intel_guc, fw);
+
+	/*
+	 * GuC version number components are defined as being 8-bits.
+	 * The submission code relies on this to optimise version comparison
+	 * tests. So enforce the restriction here.
+	 */
+
+	if (!is_ver_8bit(&uc_fw->file_selected.ver)) {
+		drm_warn(&__uc_fw_to_gt(uc_fw)->i915->drm, "%s firmware: invalid file version: 0x%02X:%02X:%02X\n",
+			 intel_uc_fw_type_repr(uc_fw->type),
+			 uc_fw->file_selected.ver.major,
+			 uc_fw->file_selected.ver.minor,
+			 uc_fw->file_selected.ver.patch);
+		return false;
+	}
+
+	if (!is_ver_8bit(&guc->submission_version)) {
+		drm_warn(&__uc_fw_to_gt(uc_fw)->i915->drm, "%s firmware: invalid submit version: 0x%02X:%02X:%02X\n",
+			 intel_uc_fw_type_repr(uc_fw->type),
+			 guc->submission_version.major,
+			 guc->submission_version.minor,
+			 guc->submission_version.patch);
+		return false;
+	}
+
+	return true;
+}
+
 /**
  * intel_uc_fw_fetch - fetch uC firmware
  * @uc_fw: uC firmware
@@ -622,6 +708,9 @@ int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw)
 	if (err)
 		goto fail;
 
+	if (uc_fw->type == INTEL_UC_FW_TYPE_GUC && !guc_check_version_range(uc_fw))
+		goto fail;
+
 	if (uc_fw->file_wanted.ver.major) {
 		/* Check the file's major version was as it claimed */
 		if (uc_fw->file_selected.ver.major != uc_fw->file_wanted.ver.major) {
@@ -1055,7 +1144,7 @@ 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;
+	bool got_wanted;
 
 	drm_printf(p, "%s firmware: %s\n",
 		   intel_uc_fw_type_repr(uc_fw->type), uc_fw->file_selected.path);
@@ -1064,9 +1153,20 @@ 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));
-	ver_sel = MAKE_UC_VER_STRUCT(uc_fw->file_selected.ver);
-	ver_want = MAKE_UC_VER_STRUCT(uc_fw->file_wanted.ver);
-	if (ver_sel < ver_want)
+
+	if (uc_fw->file_selected.ver.major < uc_fw->file_wanted.ver.major)
+		got_wanted = false;
+	else if ((uc_fw->file_selected.ver.major == uc_fw->file_wanted.ver.major) &&
+		 (uc_fw->file_selected.ver.minor < uc_fw->file_wanted.ver.minor))
+		got_wanted = false;
+	else if ((uc_fw->file_selected.ver.major == uc_fw->file_wanted.ver.major) &&
+		 (uc_fw->file_selected.ver.minor == uc_fw->file_wanted.ver.minor) &&
+		 (uc_fw->file_selected.ver.patch < uc_fw->file_wanted.ver.patch))
+		got_wanted = false;
+	else
+		got_wanted = true;
+
+	if (!got_wanted)
 		drm_printf(p, "\tversion: wanted %u.%u.%u, found %u.%u.%u\n",
 			   uc_fw->file_wanted.ver.major,
 			   uc_fw->file_wanted.ver.minor,
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 6501d6f1fbdff..3ab87c54a3987 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_uc_fw.h
@@ -66,9 +66,9 @@ enum intel_uc_fw_type {
 #define INTEL_UC_FW_NUM_TYPES 2
 
 struct intel_uc_fw_ver {
-	u16 major;
-	u16 minor;
-	u16 patch;
+	u32 major;
+	u32 minor;
+	u32 patch;
 };
 
 /*
@@ -114,10 +114,6 @@ struct intel_uc_fw {
 	bool loaded_via_gsc;
 };
 
-#define MAKE_UC_VER(maj, min, pat)	((pat) | ((min) << 8) | ((maj) << 16))
-#define MAKE_UC_VER_STRUCT(ver)		MAKE_UC_VER((ver).major, (ver).minor, (ver).patch)
-#define GET_UC_VER(uc)			(MAKE_UC_VER_STRUCT((uc)->fw.file_selected.ver))
-
 /*
  * When we load the uC binaries, we pin them in a reserved section at the top of
  * the GGTT, which is ~18 MBs. On multi-GT systems where the GTs share the GGTT,
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 7a411178bdbf2..646fa8aa6cf19 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
@@ -74,7 +74,8 @@ struct uc_css_header {
 #define CSS_SW_VERSION_UC_MAJOR		(0xFF << 16)
 #define CSS_SW_VERSION_UC_MINOR		(0xFF << 8)
 #define CSS_SW_VERSION_UC_PATCH		(0xFF << 0)
-	u32 reserved0[13];
+	u32 vf_version;
+	u32 reserved0[12];
 	union {
 		u32 private_data_size; /* only applies to GuC */
 		u32 reserved1;
-- 
2.37.3