This prints out relevant SLPC info from the SLPC shared structure.
We will send a H2G message which forces SLPC to update the
shared data structure with latest information before reading it.
v2: Address review comments (Michal W)
v3: Remove unnecessary tasks from slpc_info (Michal W)
v4: Rename function to intel_guc_slpc_print_info() (Michal W)
Reviewed-by: Michal Wajdeczko <michal.wajdec...@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaum...@intel.com>
Signed-off-by: Sundaresan Sujaritha <sujaritha.sundare...@intel.com>
---
.../gpu/drm/i915/gt/uc/intel_guc_debugfs.c | 22 ++++++++++++++
drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c | 29 +++++++++++++++++++
drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h | 3 ++
3 files changed, 54 insertions(+)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
b/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
index 72ddfff42f7d..887c8c8f35db 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_debugfs.c
@@ -12,6 +12,7 @@
#include "gt/uc/intel_guc_ct.h"
#include "gt/uc/intel_guc_ads.h"
#include "gt/uc/intel_guc_submission.h"
+#include "gt/uc/intel_guc_slpc.h"
static int guc_info_show(struct seq_file *m, void *data)
{
@@ -50,11 +51,32 @@ static int guc_registered_contexts_show(struct seq_file *m,
void *data)
}
DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_registered_contexts);
+static int guc_slpc_info_show(struct seq_file *m, void *unused)
+{
+ struct intel_guc *guc = m->private;
+ struct intel_guc_slpc *slpc = &guc->slpc;
+ struct drm_printer p = drm_seq_file_printer(m);
+
+ if (!intel_guc_slpc_is_used(guc))
+ return -ENODEV;
+
+ return intel_guc_slpc_print_info(slpc, &p);
+}
+DEFINE_GT_DEBUGFS_ATTRIBUTE(guc_slpc_info);
+
+static bool intel_eval_slpc_support(void *data)
+{
+ struct intel_guc *guc = (struct intel_guc *)data;
+
+ return intel_guc_slpc_is_used(guc);
+}
+
void intel_guc_debugfs_register(struct intel_guc *guc, struct dentry *root)
{
static const struct debugfs_gt_file files[] = {
{ "guc_info", &guc_info_fops, NULL },
{ "guc_registered_contexts", &guc_registered_contexts_fops,
NULL },
+ { "guc_slpc_info", &guc_slpc_info_fops,
&intel_eval_slpc_support},
};
if (!intel_guc_is_supported(guc))
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
index 816c9ee301bf..2643d207009b 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c
@@ -439,6 +439,35 @@ int intel_guc_slpc_enable(struct intel_guc_slpc *slpc)
return 0;
}
+int intel_guc_slpc_print_info(struct intel_guc_slpc *slpc, struct drm_printer
*p)
+{
+ struct drm_i915_private *i915 = slpc_to_i915(slpc);
+ struct slpc_shared_data *data = slpc->vaddr;
+ struct slpc_task_state_data *slpc_tasks;
+ intel_wakeref_t wakeref;
+ int ret = 0;
+
+ GEM_BUG_ON(!slpc->vma);
+
+ with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
+ ret = slpc_query_task_state(slpc);
+
+ if (!ret) {
+ slpc_tasks = &data->task_state_data;
+
+ drm_printf(p, "\tSLPC state: %s\n",
slpc_get_state_string(slpc));
+ drm_printf(p, "\tGTPERF task active: %s\n",
+ yesno(slpc_tasks->status &
SLPC_GTPERF_TASK_ENABLED));
+ drm_printf(p, "\tMax freq: %u MHz\n",
+ slpc_decode_max_freq(slpc));
+ drm_printf(p, "\tMin freq: %u MHz\n",
+ slpc_decode_min_freq(slpc));
+ }
+ }
+
+ return ret;
+}
+
void intel_guc_slpc_fini(struct intel_guc_slpc *slpc)
{
if (!slpc->vma)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
index 78a7893ce489..3ffd4f2e3151 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h
@@ -9,6 +9,8 @@
#include "intel_guc_submission.h"
#include "intel_guc_slpc_types.h"
+struct drm_printer;
+
static inline bool intel_guc_slpc_is_supported(struct intel_guc *guc)
{
return guc->slpc.supported;
@@ -33,5 +35,6 @@ int intel_guc_slpc_set_max_freq(struct intel_guc_slpc *slpc,
u32 val);
int intel_guc_slpc_set_min_freq(struct intel_guc_slpc *slpc, u32 val);
int intel_guc_slpc_get_max_freq(struct intel_guc_slpc *slpc, u32 *val);
int intel_guc_slpc_get_min_freq(struct intel_guc_slpc *slpc, u32 *val);
+int intel_guc_slpc_print_info(struct intel_guc_slpc *slpc, struct drm_printer
*p);
#endif
--
2.25.0
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