From c3b6695478d20efdd9bb332ce8d1254319f9da46 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Wed, 30 Mar 2022 14:34:15 +0300
Subject: drm/i915/dmc: abstract GPU error state dump
Git-commit: 5efde05f6af1c5dd1abf63cd26c004bdfb4bbb5c
Patch-mainline: v5.19-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
Only intel_dmc.c should be accessing dmc details directly.
Need to add an i915_error_printf() stub for
CONFIG_DRM_I915_CAPTURE_ERROR=n.
v2: Add the stub (kernel test robot <lkp@intel.com>)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> # v1
Link: https://patchwork.freedesktop.org/patch/msgid/20220330113417.220964-1-jani.nikula@intel.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/i915/display/intel_dmc.c | 15 +++++++++++++++
drivers/gpu/drm/i915/display/intel_dmc.h | 3 +++
drivers/gpu/drm/i915/i915_gpu_error.c | 10 +---------
drivers/gpu/drm/i915/i915_gpu_error.h | 6 ++++++
4 files changed, 25 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c
index 2e49375d83ee..a4480bf05cd1 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.c
+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
@@ -855,6 +855,21 @@ void intel_dmc_ucode_fini(struct drm_i915_private *dev_priv)
kfree(dev_priv->dmc.dmc_info[id].payload);
}
+void intel_dmc_print_error_state(struct drm_i915_error_state_buf *m,
+ struct drm_i915_private *i915)
+{
+ struct intel_dmc *dmc = &i915->dmc;
+
+ if (!HAS_DMC(i915))
+ return;
+
+ i915_error_printf(m, "DMC loaded: %s\n",
+ str_yes_no(intel_dmc_has_payload(i915)));
+ i915_error_printf(m, "DMC fw version: %d.%d\n",
+ DMC_VERSION_MAJOR(dmc->version),
+ DMC_VERSION_MINOR(dmc->version));
+}
+
static int intel_dmc_debugfs_status_show(struct seq_file *m, void *unused)
{
struct drm_i915_private *i915 = m->private;
diff --git a/drivers/gpu/drm/i915/display/intel_dmc.h b/drivers/gpu/drm/i915/display/intel_dmc.h
index b9f608057700..dd8880d2cbed 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.h
+++ b/drivers/gpu/drm/i915/display/intel_dmc.h
@@ -10,6 +10,7 @@
#include "intel_wakeref.h"
#include <linux/workqueue.h>
+struct drm_i915_error_state_buf;
struct drm_i915_private;
#define DMC_VERSION(major, minor) ((major) << 16 | (minor))
@@ -55,6 +56,8 @@ void intel_dmc_ucode_suspend(struct drm_i915_private *i915);
void intel_dmc_ucode_resume(struct drm_i915_private *i915);
bool intel_dmc_has_payload(struct drm_i915_private *i915);
void intel_dmc_debugfs_register(struct drm_i915_private *i915);
+void intel_dmc_print_error_state(struct drm_i915_error_state_buf *m,
+ struct drm_i915_private *i915);
void assert_dmc_loaded(struct drm_i915_private *i915);
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 04289cc22741..d0e7ee7b07df 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -826,15 +826,7 @@ static void __err_print_to_sgl(struct drm_i915_error_state_buf *m,
err_printf(m, "IOMMU enabled?: %d\n", error->iommu);
- if (HAS_DMC(m->i915)) {
- struct intel_dmc *dmc = &m->i915->dmc;
-
- err_printf(m, "DMC loaded: %s\n",
- str_yes_no(intel_dmc_has_payload(m->i915) != 0));
- err_printf(m, "DMC fw version: %d.%d\n",
- DMC_VERSION_MAJOR(dmc->version),
- DMC_VERSION_MINOR(dmc->version));
- }
+ intel_dmc_print_error_state(m, m->i915);
err_printf(m, "RPM wakelock: %s\n", str_yes_no(error->wakelock));
err_printf(m, "PM suspended: %s\n", str_yes_no(error->suspended));
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.h b/drivers/gpu/drm/i915/i915_gpu_error.h
index 903d838e2e63..88ce3a08f555 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.h
+++ b/drivers/gpu/drm/i915/i915_gpu_error.h
@@ -281,6 +281,12 @@ void i915_disable_error_state(struct drm_i915_private *i915, int err);
#else
+__printf(2, 3)
+static inline void
+i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...)
+{
+}
+
static inline void
i915_capture_error_state(struct intel_gt *gt, intel_engine_mask_t engine_mask)
{
--
2.38.1