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 --- 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 c2fe2cf..1f53cc2 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -162,6 +162,26 @@ 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. * @@ -187,12 +207,6 @@ 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. *
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 --- 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 2112e02..e299b64 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; @@ -553,8 +551,8 @@ 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; @@ -726,8 +724,8 @@ 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);
for (i = 0; i < GUC_MAX_DOORBELLS; ++i) { i915_reg_t drbreg = GEN8_DRBREGL(i); @@ -819,8 +817,6 @@ 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; } @@ -998,7 +994,7 @@ 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; }
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. A typical failure mode might now look like this in the dmesg log:
[drm] Failed to fetch valid GuC firmware from i915/skl_guc_ver6_1.bin (error -2) [drm] GuC firmware load failed: -5 [drm] Falling back from GuC submission to execlist mode
which provides sufficient notice that * there is a problem with the firmware binary * and consequently loading the GuC has failed * and so we have selected the fallback (execlist) mode while not cluttering the log with developer-only details.
v2: different permutation of levels :)
Signed-off-by: Dave Gordon david.s.gordon@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 605c696..a2f4fa4 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"); + DRM_WARN("GEN%d does not support GuC operation\n", gen); return GFXCORE_FAMILY_UNKNOWN; } } @@ -433,7 +435,7 @@ 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"); + DRM_WARN("No GuC firmware known for this platform\n"); err = -ENODEV; goto fail; } @@ -471,10 +473,8 @@ 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) @@ -532,15 +532,15 @@ 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); } @@ -571,7 +571,7 @@ 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; }
@@ -583,7 +583,7 @@ 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; }
@@ -593,7 +593,7 @@ 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; @@ -602,14 +602,14 @@ 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; }
@@ -624,7 +624,7 @@ 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; @@ -654,10 +654,10 @@ 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;
dri-devel@lists.freedesktop.org
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Dave Gordon