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drm/i915/guc: Dump perf_limit_reasons for debug

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GuC load takes longer sometimes due to GT frequency not ramping up.
Add perf_limit_reasons to the existing warn print to see if frequency
is being throttled.

v2: Review comments (Ashutosh)

Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230627191336.319381-1-vinay.belgaumkar@intel.com
This commit is contained in:
Vinay Belgaumkar 2023-06-27 12:13:36 -07:00 committed by Daniele Ceraolo Spurio
parent ed6dd32c91
commit a8c94b3964
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c
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@ -251,9 +251,11 @@ static int guc_wait_ucode(struct intel_guc *guc)
if (ret == 0)
ret = -ENXIO;
} else if (delta_ms > 200) {
guc_warn(guc, "excessive init time: %lldms! [freq = %dMHz, before = %dMHz, status = 0x%08X, count = %d, ret = %d]\n",
delta_ms, intel_rps_read_actual_frequency(&uncore->gt->rps),
before_freq, status, count, ret);
guc_warn(guc, "excessive init time: %lldms! [status = 0x%08X, count = %d, ret = %d]\n",
delta_ms, status, count, ret);
guc_warn(guc, "excessive init time: [freq = %dMHz, before = %dMHz, perf_limit_reasons = 0x%08X]\n",
intel_rps_read_actual_frequency(&uncore->gt->rps), before_freq,
intel_uncore_read(uncore, intel_gt_perf_limit_reasons_reg(gt)));
} else {
guc_dbg(guc, "init took %lldms, freq = %dMHz, before = %dMHz, status = 0x%08X, count = %d, ret = %d\n",
delta_ms, intel_rps_read_actual_frequency(&uncore->gt->rps),