[PATCH v4 0/4] Reclassify messages from GuC loader/submission

[PATCH v4 0/4] Reclassify messages from GuC loader/submission

[Dave Gordon]

Various downgrading, upgrading, or general reorganisation of the
messages emitted by the GuC code. Mostly:
* "can't happen" cases (inconsistencies/misconfiguration) are ERRORs
* recoverable (ignored) errors are downgraded to WARNINGs
* important auxiliary messages about failure or mode change are NOTICEs
* anything else (messages for developer rather than sysadmin) is DEBUG

v4:
  Resend with added cover letter 

Dave Gordon (4):
  drm: extra printk() wrapper macros
  drm/i915/guc: downgrade some DRM_ERROR() messages to DRM_WARN()
  drm/i915/guc: revisit GuC loader message levels
  drm/i915/guc: next version of GuC firmware is 8.11

 drivers/gpu/drm/i915/i915_guc_submission.c | 18 +++++--------
 drivers/gpu/drm/i915/i915_params.c         |  4 +--
 drivers/gpu/drm/i915/intel_guc_loader.c    | 41 +++++++++++++++++-------------
 include/drm/drmP.h                         | 26 ++++++++++++++-----
 4 files changed, 53 insertions(+), 36 deletions(-)

-- 
1.9.1

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[PATCH v4 1/4] drm: extra printk() wrapper macros

[Dave Gordon]

We had only DRM_INFO() and DRM_ERROR(), whereas the underlying printk()
provides several other useful intermediate levels such as NOTICE and
WARNING. So this patch fills out the set by providing both regular and
once-only macros for each of the levels INFO, NOTICE, and WARNING, using
a common underlying macro that does all the token-pasting.

DRM_ERROR is unchanged, as it's not just a printk wrapper.

v2:
    Fix whitespace, missing ## (Eric Engestrom)

Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Cc: dri-devel@lists.freedesktop.org
---
 include/drm/drmP.h | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 856c174..c9f168a 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -163,6 +163,26 @@ void drm_err(const char *format, ...);
 /** \name Macros to make printk easier */
 /*@{*/
 
+#define _DRM_PRINTK(once, level, fmt, ...)				\
+	do {								\
+		printk##once(KERN_##level "[" DRM_NAME "] " fmt,	\
+			     ##__VA_ARGS__);				\
+	} while (0)
+
+#define DRM_INFO(fmt, ...)						\
+	_DRM_PRINTK(, INFO, fmt, ##__VA_ARGS__)
+#define DRM_NOTE(fmt, ...)						\
+	_DRM_PRINTK(, NOTICE, fmt, ##__VA_ARGS__)
+#define DRM_WARN(fmt, ...)						\
+	_DRM_PRINTK(, WARNING, fmt, ##__VA_ARGS__)
+
+#define DRM_INFO_ONCE(fmt, ...)						\
+	_DRM_PRINTK(_once, INFO, fmt, ##__VA_ARGS__)
+#define DRM_NOTE_ONCE(fmt, ...)						\
+	_DRM_PRINTK(_once, NOTICE, fmt, ##__VA_ARGS__)
+#define DRM_WARN_ONCE(fmt, ...)						\
+	_DRM_PRINTK(_once, WARNING, fmt, ##__VA_ARGS__)
+
 /**
  * Error output.
  *
@@ -188,12 +208,6 @@ void drm_err(const char *format, ...);
 		drm_err(fmt, ##__VA_ARGS__);				\
 })
 
-#define DRM_INFO(fmt, ...)				\
-	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
-
-#define DRM_INFO_ONCE(fmt, ...)				\
-	printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
-
 /**
  * Debug output.
  *
-- 
1.9.1

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[PATCH v4 2/4] drm/i915/guc: downgrade some DRM_ERROR() messages to DRM_WARN()

[Dave Gordon]

Where we're going to continue regardless of the problem, rather than
fail, then the message should be a WARNing rather than an ERROR.

Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 drivers/gpu/drm/i915/i915_guc_submission.c | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c b/drivers/gpu/drm/i915/i915_guc_submission.c
index 6831321..d43625f 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -114,10 +114,8 @@ static int host2guc_action(struct intel_guc *guc, u32 *data, u32 len)
 		if (ret != -ETIMEDOUT)
 			ret = -EIO;
 
-		DRM_ERROR("GUC: host2guc action 0x%X failed. ret=%d "
-				"status=0x%08X response=0x%08X\n",
-				data[0], ret, status,
-				I915_READ(SOFT_SCRATCH(15)));
+		DRM_WARN("Action 0x%X failed; ret=%d status=0x%08X response=0x%08X\n",
+			 data[0], ret, status, I915_READ(SOFT_SCRATCH(15)));
 
 		dev_priv->guc.action_fail += 1;
 		dev_priv->guc.action_err = ret;
@@ -556,8 +554,8 @@ static int guc_ring_doorbell(struct i915_guc_client *gc)
 		if (db_ret.db_status == GUC_DOORBELL_DISABLED)
 			break;
 
-		DRM_ERROR("Cookie mismatch. Expected %d, returned %d\n",
-			  db_cmp.cookie, db_ret.cookie);
+		DRM_WARN("Cookie mismatch. Expected %d, found %d\n",
+			 db_cmp.cookie, db_ret.cookie);
 
 		/* update the cookie to newly read cookie from GuC */
 		db_cmp.cookie = db_ret.cookie;
@@ -745,8 +743,8 @@ static void guc_init_doorbell_hw(struct intel_guc *guc)
 	/* Restore to original value */
 	err = guc_update_doorbell_id(guc, client, db_id);
 	if (err)
-		DRM_ERROR("Failed to restore doorbell to %d, err %d\n",
-			db_id, err);
+		DRM_WARN("Failed to restore doorbell to %d, err %d\n",
+			 db_id, err);
 
 	/* Read back & verify all doorbell registers */
 	for (i = 0; i < GUC_MAX_DOORBELLS; ++i)
@@ -834,8 +832,6 @@ static void guc_init_doorbell_hw(struct intel_guc *guc)
 	return client;
 
 err:
-	DRM_ERROR("FAILED to create priority %u GuC client!\n", priority);
-
 	guc_client_free(dev_priv, client);
 	return NULL;
 }
@@ -1015,7 +1011,7 @@ int i915_guc_submission_enable(struct drm_i915_private *dev_priv)
 				  GUC_CTX_PRIORITY_KMD_NORMAL,
 				  dev_priv->kernel_context);
 	if (!client) {
-		DRM_ERROR("Failed to create execbuf guc_client\n");
+		DRM_ERROR("Failed to create normal GuC client!\n");
 		return -ENOMEM;
 	}
 
-- 
1.9.1

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[PATCH v4 3/4] drm/i915/guc: revisit GuC loader message levels

[Dave Gordon]

Some downgraded from DRM_ERROR() to DRM_WARN() or DRM_NOTE(),
a few upgraded from DRM_INFO() to DRM_NOTE() or DRM_WARN(),
and one eliminated completely.

v2: different permutation of levels :)
v3: convert a couple of "this shouldn't happen" messages to WARN()

Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
---
 drivers/gpu/drm/i915/intel_guc_loader.c | 34 ++++++++++++++++-----------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index 3763e30..d9cbc26 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -140,12 +140,14 @@ static u32 get_gttype(struct drm_i915_private *dev_priv)
 
 static u32 get_core_family(struct drm_i915_private *dev_priv)
 {
-	switch (INTEL_INFO(dev_priv)->gen) {
+	u32 gen = INTEL_GEN(dev_priv);
+
+	switch (gen) {
 	case 9:
 		return GFXCORE_FAMILY_GEN9;
 
 	default:
-		DRM_ERROR("GUC: unsupported core family\n");
+		WARN(1, "GEN%d does not support GuC operation!\n", gen);
 		return GFXCORE_FAMILY_UNKNOWN;
 	}
 }
@@ -435,7 +437,7 @@ int intel_guc_setup(struct drm_device *dev)
 		goto fail;
 	} else if (*fw_path == '\0') {
 		/* Device has a GuC but we don't know what f/w to load? */
-		DRM_INFO("No GuC firmware known for this platform\n");
+		WARN(1, "No GuC firmware known for this platform!\n");
 		err = -ENODEV;
 		goto fail;
 	}
@@ -473,10 +475,8 @@ int intel_guc_setup(struct drm_device *dev)
 		 * that the state and timing are fairly predictable
 		 */
 		err = i915_reset_guc(dev_priv);
-		if (err) {
-			DRM_ERROR("GuC reset failed: %d\n", err);
+		if (err)
 			goto fail;
-		}
 
 		err = guc_ucode_xfer(dev_priv);
 		if (!err)
@@ -534,15 +534,15 @@ int intel_guc_setup(struct drm_device *dev)
 	else if (err == 0)
 		DRM_INFO("GuC firmware load skipped\n");
 	else if (ret != -EIO)
-		DRM_INFO("GuC firmware load failed: %d\n", err);
+		DRM_NOTE("GuC firmware load failed: %d\n", err);
 	else
-		DRM_ERROR("GuC firmware load failed: %d\n", err);
+		DRM_WARN("GuC firmware load failed: %d\n", err);
 
 	if (i915.enable_guc_submission) {
 		if (fw_path == NULL)
 			DRM_INFO("GuC submission without firmware not supported\n");
 		if (ret == 0)
-			DRM_INFO("Falling back from GuC submission to execlist mode\n");
+			DRM_NOTE("Falling back from GuC submission to execlist mode\n");
 		else
 			DRM_ERROR("GuC init failed: %d\n", ret);
 	}
@@ -573,7 +573,7 @@ static void guc_fw_fetch(struct drm_device *dev, struct intel_guc_fw *guc_fw)
 
 	/* Check the size of the blob before examining buffer contents */
 	if (fw->size < sizeof(struct guc_css_header)) {
-		DRM_ERROR("Firmware header is missing\n");
+		DRM_NOTE("Firmware header is missing\n");
 		goto fail;
 	}
 
@@ -585,7 +585,7 @@ static void guc_fw_fetch(struct drm_device *dev, struct intel_guc_fw *guc_fw)
 		css->key_size_dw - css->exponent_size_dw) * sizeof(u32);
 
 	if (guc_fw->header_size != sizeof(struct guc_css_header)) {
-		DRM_ERROR("CSS header definition mismatch\n");
+		DRM_NOTE("CSS header definition mismatch\n");
 		goto fail;
 	}
 
@@ -595,7 +595,7 @@ static void guc_fw_fetch(struct drm_device *dev, struct intel_guc_fw *guc_fw)
 
 	/* now RSA */
 	if (css->key_size_dw != UOS_RSA_SCRATCH_MAX_COUNT) {
-		DRM_ERROR("RSA key size is bad\n");
+		DRM_NOTE("RSA key size is bad\n");
 		goto fail;
 	}
 	guc_fw->rsa_offset = guc_fw->ucode_offset + guc_fw->ucode_size;
@@ -604,14 +604,14 @@ static void guc_fw_fetch(struct drm_device *dev, struct intel_guc_fw *guc_fw)
 	/* At least, it should have header, uCode and RSA. Size of all three. */
 	size = guc_fw->header_size + guc_fw->ucode_size + guc_fw->rsa_size;
 	if (fw->size < size) {
-		DRM_ERROR("Missing firmware components\n");
+		DRM_NOTE("Missing firmware components\n");
 		goto fail;
 	}
 
 	/* Header and uCode will be loaded to WOPCM. Size of the two. */
 	size = guc_fw->header_size + guc_fw->ucode_size;
 	if (size > guc_wopcm_size(to_i915(dev))) {
-		DRM_ERROR("Firmware is too large to fit in WOPCM\n");
+		DRM_NOTE("Firmware is too large to fit in WOPCM\n");
 		goto fail;
 	}
 
@@ -626,7 +626,7 @@ static void guc_fw_fetch(struct drm_device *dev, struct intel_guc_fw *guc_fw)
 
 	if (guc_fw->guc_fw_major_found != guc_fw->guc_fw_major_wanted ||
 	    guc_fw->guc_fw_minor_found < guc_fw->guc_fw_minor_wanted) {
-		DRM_ERROR("GuC firmware version %d.%d, required %d.%d\n",
+		DRM_NOTE("GuC firmware version %d.%d, required %d.%d\n",
 			guc_fw->guc_fw_major_found, guc_fw->guc_fw_minor_found,
 			guc_fw->guc_fw_major_wanted, guc_fw->guc_fw_minor_wanted);
 		err = -ENOEXEC;
@@ -656,10 +656,10 @@ static void guc_fw_fetch(struct drm_device *dev, struct intel_guc_fw *guc_fw)
 	return;
 
 fail:
+	DRM_WARN("Failed to fetch valid GuC firmware from %s (error %d)\n",
+		 guc_fw->guc_fw_path, err);
 	DRM_DEBUG_DRIVER("GuC fw fetch status FAIL; err %d, fw %p, obj %p\n",
 		err, fw, guc_fw->guc_fw_obj);
-	DRM_ERROR("Failed to fetch GuC firmware from %s (error %d)\n",
-		  guc_fw->guc_fw_path, err);
 
 	mutex_lock(&dev->struct_mutex);
 	obj = guc_fw->guc_fw_obj;
-- 
1.9.1

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[PATCH v4 4/4] NOMERGE: next version of GuC firmware is 8.11

[Dave Gordon]

Update GuC firmware version to 8.11, and re-enable GuC loading and
submission by default on suitable platforms, since it's Intel's
Plan of Record that GuC submission shall be used where available.

Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
---
 drivers/gpu/drm/i915/i915_params.c      | 4 ++--
 drivers/gpu/drm/i915/intel_guc_loader.c | 7 +++++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index 768ad89..02419a6 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -55,8 +55,8 @@ struct i915_params i915 __read_mostly = {
 	.verbose_state_checks = 1,
 	.nuclear_pageflip = 0,
 	.edp_vswing = 0,
-	.enable_guc_loading = 0,
-	.enable_guc_submission = 0,
+	.enable_guc_loading = -1,
+	.enable_guc_submission = -1,
 	.guc_log_level = -1,
 	.enable_dp_mst = true,
 	.inject_load_failure = 0,
diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index d9cbc26..de8b8cd 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -62,6 +62,9 @@
 #define I915_SKL_GUC_UCODE "i915/skl_guc_ver6_1.bin"
 MODULE_FIRMWARE(I915_SKL_GUC_UCODE);
 
+#define I915_SKL_GUC_UCODE_NEXT "i915/skl_guc_ver8.bin"
+MODULE_FIRMWARE(I915_SKL_GUC_UCODE_NEXT);
+
 #define I915_BXT_GUC_UCODE "i915/bxt_guc_ver8_7.bin"
 MODULE_FIRMWARE(I915_BXT_GUC_UCODE);
 
@@ -696,6 +699,10 @@ void intel_guc_init(struct drm_device *dev)
 	if (!HAS_GUC_UCODE(dev)) {
 		fw_path = NULL;
 	} else if (IS_SKYLAKE(dev)) {
+		fw_path = I915_SKL_GUC_UCODE_NEXT;
+		guc_fw->guc_fw_major_wanted = 8;
+		guc_fw->guc_fw_minor_wanted = 11;
+	} else if (IS_SKYLAKE(dev)) {
 		fw_path = I915_SKL_GUC_UCODE;
 		guc_fw->guc_fw_major_wanted = 6;
 		guc_fw->guc_fw_minor_wanted = 1;
-- 
1.9.1

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✗ Ro.CI.BAT: failure for Reclassify messages from GuC loader/submission (rev2)

[Patchwork]

== Series Details ==

Series: Reclassify messages from GuC loader/submission (rev2)
URL   : https://patchwork.freedesktop.org/series/10918/
State : failure

== Summary ==

Applying: drm: extra printk() wrapper macros
Applying: drm/i915/guc: downgrade some DRM_ERROR() messages to DRM_WARN()
Applying: drm/i915/guc: revisit GuC loader message levels
Applying: NOMERGE: next version of GuC firmware is 8.11
Using index info to reconstruct a base tree...
M	drivers/gpu/drm/i915/intel_guc_loader.c
Falling back to patching base and 3-way merge...
Auto-merging drivers/gpu/drm/i915/intel_guc_loader.c
CONFLICT (content): Merge conflict in drivers/gpu/drm/i915/intel_guc_loader.c
error: Failed to merge in the changes.
Patch failed at 0004 NOMERGE: next version of GuC firmware is 8.11
The copy of the patch that failed is found in: .git/rebase-apply/patch
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

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[PATCH v4 0/4] Reclassify messages from GuC loader/submission

[Dave Gordon]

Various downgrading, upgrading, or general reorganisation of the
messages emitted by the GuC code. As general principles:

* "can't happen" cases (inconsistencies/misconfiguration) are ERRORs
* recoverable (ignored) errors are downgraded to WARNINGs
* important auxiliary messages about failure or mode change are NOTICEs
* anything else (messages for developer rather than sysadmin) is DEBUG

v4:
  Resend with added cover letter 

Dave Gordon (4):
  drm: extra printk() wrapper macros
  drm/i915/guc: downgrade some DRM_ERROR() messages to DRM_WARN()
  drm/i915/guc: revisit GuC loader message levels
  drm/i915/guc: next version of GuC firmware is 8.11

 drivers/gpu/drm/i915/i915_guc_submission.c | 18 ++++++--------
 drivers/gpu/drm/i915/i915_params.c         |  4 ++--
 drivers/gpu/drm/i915/intel_guc_loader.c    | 38 +++++++++++++++---------------
 include/drm/drmP.h                         | 26 +++++++++++++++-----
 4 files changed, 48 insertions(+), 38 deletions(-)

-- 
1.9.1

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[PATCH v4 0/4] Reclassify messages from GuC loader/submission

[Dave Gordon]

Various downgrading, upgrading, or general reorganisation of the
messages emitted by the GuC code. As general principles:

* "can't happen" cases (inconsistencies/misconfiguration) are ERRORs
* recoverable (ignored) errors are downgraded to WARNINGs
* important auxiliary messages about failure or mode change are NOTICEs
* anything else (messages for developer rather than sysadmin) is DEBUG

v4:
  Resend with added cover letter 

Dave Gordon (4):
  drm: extra printk() wrapper macros
  drm/i915/guc: downgrade some DRM_ERROR() messages to DRM_WARN()
  drm/i915/guc: revisit GuC loader message levels
  drm/i915/guc: next version of GuC firmware is 8.11

 drivers/gpu/drm/i915/i915_guc_submission.c | 18 ++++++--------
 drivers/gpu/drm/i915/i915_params.c         |  4 ++--
 drivers/gpu/drm/i915/intel_guc_loader.c    | 38 +++++++++++++++---------------
 include/drm/drmP.h                         | 26 +++++++++++++++-----
 4 files changed, 48 insertions(+), 38 deletions(-)

-- 
1.9.1

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[PATCH v4 0/4] Reclassify messages from GuC loader/submission

[Dave Gordon]

Various downgrading, upgrading, or general reorganisation of the
messages emitted by the GuC code. Mostly:
* "can't happen" cases (inconsistencies/misconfiguration) are ERRORs
* recoverable (ignored) errors are downgraded to WARNINGs
* important auxiliary messages about failure or mode change are NOTICEs
* anything else (messages for developer rather than sysadmin) is DEBUG

v4:
  Resend with added cover letter :)

Dave Gordon (4):
  drm: extra printk() wrapper macros
  drm/i915/guc: downgrade some DRM_ERROR() messages to DRM_WARN()
  drm/i915/guc: revisit GuC loader message levels
  drm/i915/guc: re-enable GuC loading and submission by default

 drivers/gpu/drm/i915/i915_guc_submission.c | 18 ++++++----------
 drivers/gpu/drm/i915/i915_params.c         |  4 ++--
 drivers/gpu/drm/i915/intel_guc_loader.c    | 34 +++++++++++++++---------------
 include/drm/drmP.h                         | 26 +++++++++++++++++------
 4 files changed, 46 insertions(+), 36 deletions(-)

-- 
1.9.1

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