[PATCH 21/26] drm/i915/slpc: Add i915_slpc_info to debugfs

tom.orourke
2016-03-09T00:35:09Z

i915_slpc_info shows the contents of SLPC shared data
parsed into text format.

v2: reformat slpc info (Radek)
squashed query task state info
in slpc info, kunmap before seq_print (Paulo)
return void instead of ignored return value (Paulo)

Signed-off-by: Tom O'Rourke <Tom.O'Rourke@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 184 ++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_slpc.c | 23 +++++
drivers/gpu/drm/i915/intel_slpc.h | 1 +
3 files changed, 208 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 54e40f1..806b095 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1371,6 +1371,189 @@ static const struct file_operations i915_slpc_dcc_fops = {
.llseek = seq_lseek
};

+static int i915_slpc_info(struct seq_file *m, void *unused)
+{
+ struct drm_info_node *node = m->private;
+ struct drm_device *dev = node->minor->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_gem_object *obj;
+ struct page *page;
+ void *pv = NULL;
+ struct slpc_shared_data data;
+ int i, value;
+ enum slpc_global_state global_state;
+ enum slpc_platform_sku platform_sku;
+ enum slpc_host_os host_os;
+ enum slpc_power_plan power_plan;
+ enum slpc_power_source power_source;
+
+ obj = dev_priv->guc.slpc.shared_data_obj;
+ if (obj) {
+ intel_slpc_query_task_state(dev);
+
+ page = i915_gem_object_get_page(obj, 0);
+ if (page)
+ pv = kmap_atomic(page);
+ }
+
+ if (pv) {
+ data = *(struct slpc_shared_data *) pv;
+ kunmap_atomic(pv);
+
+ seq_printf(m, "SLPC Version: %d.%d.%d (0x%8x)\n",
+ data.slpc_version >> 16,
+ (data.slpc_version >> 8) & 0xFF,
+ data.slpc_version & 0xFF,
+ data.slpc_version);
+ seq_printf(m, "shared data size: %d\n", data.shared_data_size);
+
+ seq_printf(m, "global state: %d (", data.global_state);
+ global_state = (enum slpc_global_state) data.global_state;
+ switch (global_state) {
+ case SLPC_GLOBAL_STATE_NOT_RUNNING:
+ seq_puts(m, "not running)\n");
+ break;
+ case SLPC_GLOBAL_STATE_INITIALIZING:
+ seq_puts(m, "initializing)\n");
+ break;
+ case SLPC_GLOBAL_STATE_RESETING:
+ seq_puts(m, "resetting)\n");
+ break;
+ case SLPC_GLOBAL_STATE_RUNNING:
+ seq_puts(m, "running)\n");
+ break;
+ case SLPC_GLOBAL_STATE_SHUTTING_DOWN:
+ seq_puts(m, "shutting down)\n");
+ break;
+ case SLPC_GLOBAL_STATE_ERROR:
+ seq_puts(m, "error)\n");
+ break;
+ default:
+ seq_puts(m, "unknown)\n");
+ break;
+ }
+
+ seq_printf(m, "sku: %d (", data.platform_info.platform_sku);
+ platform_sku = (enum slpc_platform_sku)
+ data.platform_info.platform_sku;
+ switch (platform_sku) {
+ case SLPC_PLATFORM_SKU_UNDEFINED:
+ seq_puts(m, "undefined)\n");
+ break;
+ case SLPC_PLATFORM_SKU_ULX:
+ seq_puts(m, "ULX)\n");
+ break;
+ case SLPC_PLATFORM_SKU_ULT:
+ seq_puts(m, "ULT)\n");
+ break;
+ case SLPC_PLATFORM_SKU_T:
+ seq_puts(m, "T)\n");
+ break;
+ case SLPC_PLATFORM_SKU_MOBL:
+ seq_puts(m, "Mobile)\n");
+ break;
+ case SLPC_PLATFORM_SKU_DT:
+ seq_puts(m, "DT)\n");
+ break;
+ case SLPC_PLATFORM_SKU_UNKNOWN:
+ default:
+ seq_puts(m, "unknown)\n");
+ break;
+ }
+ seq_printf(m, "slice count: %d\n",
+ data.platform_info.slice_count);
+
+ seq_printf(m, "host OS: %d (", data.platform_info.host_os);
+ host_os = (enum slpc_host_os) data.platform_info.host_os;
+ switch (host_os) {
+ case SLPC_HOST_OS_UNDEFINED:
+ seq_puts(m, "undefined)\n");
+ break;
+ case SLPC_HOST_OS_WINDOWS_8:
+ seq_puts(m, "Windows 8)\n");
+ break;
+ default:
+ seq_puts(m, "unknown)\n");
+ break;
+ }
+
+ seq_printf(m, "power plan/source: 0x%x\n\tplan:\t",
+ data.platform_info.power_plan_source);
+ power_plan = (enum slpc_power_plan)
+ data.platform_info.power_plan_source & 0x3F;
+ power_source = (enum slpc_power_source)
+ data.platform_info.power_plan_source >> 6;
+ switch (power_plan) {
+ case SLPC_POWER_PLAN_UNDEFINED:
+ seq_puts(m, "undefined");
+ break;
+ case SLPC_POWER_PLAN_BATTERY_SAVER:
+ seq_puts(m, "battery saver");
+ break;
+ case SLPC_POWER_PLAN_BALANCED:
+ seq_puts(m, "balanced");
+ break;
+ case SLPC_POWER_PLAN_PERFORMANCE:
+ seq_puts(m, "performance");
+ break;
+ case SLPC_POWER_PLAN_UNKNOWN:
+ default:
+ seq_puts(m, "unknown");
+ break;
+ }
+ seq_puts(m, "\n\tsource:\t");
+ switch (power_source) {
+ case SLPC_POWER_SOURCE_UNDEFINED:
+ seq_puts(m, "undefined\n");
+ break;
+ case SLPC_POWER_SOURCE_AC:
+ seq_puts(m, "AC\n");
+ break;
+ case SLPC_POWER_SOURCE_DC:
+ seq_puts(m, "DC\n");
+ break;
+ case SLPC_POWER_SOURCE_UNKNOWN:
+ default:
+ seq_puts(m, "unknown\n");
+ break;
+ }
+
+ seq_printf(m, "IA frequency (MHz):\n\tP0: %d\n\tP1: %d\n\tPe: %d\n\tPn: %d\n",
+ data.platform_info.P0_freq * 50,
+ data.platform_info.P1_freq * 50,
+ data.platform_info.Pe_freq * 50,
+ data.platform_info.Pn_freq * 50);
+ seq_printf(m, "RAPL package power limits:\n\t0x%08x\n\t0x%08x\n",
+ data.platform_info.package_rapl_limit_high,
+ data.platform_info.package_rapl_limit_low);
+ seq_printf(m, "task state data: 0x%08x\n",
+ data.task_state_data);
+ seq_printf(m, "\tturbo active: %d\n",
+ (data.task_state_data & 1));
+ seq_printf(m, "\tdfps stall possible: %d\n\tgame mode: %d\n\tdfps target fps: %d\n",
+ (data.task_state_data & 2),
+ (data.task_state_data & 4),
+ (data.task_state_data >> 3) & 0xFF);
+
+ seq_puts(m, "override parameter bitfield\n");
+ for (i=0; i < SLPC_OVERRIDE_BITFIELD_SIZE; i++)
+ seq_printf(m, "%d: 0x%08x\n", i,
+ data.override_parameters_set_bits[i]);
+
+ seq_puts(m, "override parameters (only non-zero shown)\n");
+ for (i=0; i < SLPC_MAX_OVERRIDE_PARAMETERS; i++) {
+ value = data.override_parameters_values[i];
+ if (value)
+ seq_printf(m, "%d: 0x%8x\n", i, value);
+ }
+
+ } else {
+ seq_puts(m, "no SLPC info available\n");
+ }
+
+ return 0;
+}
+
static int i915_frequency_info(struct seq_file *m, void *unused)
{
struct drm_info_node *node = m->private;
@@ -5626,6 +5809,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
{"i915_guc_info", i915_guc_info, 0},
{"i915_guc_load_status", i915_guc_load_status_info, 0},
{"i915_guc_log_dump", i915_guc_log_dump, 0},
+ {"i915_slpc_info", i915_slpc_info, 0},
{"i915_frequency_info", i915_frequency_info, 0},
{"i915_hangcheck_info", i915_hangcheck_info, 0},
{"i915_drpc_info", i915_drpc_info, 0},
diff --git a/drivers/gpu/drm/i915/intel_slpc.c b/drivers/gpu/drm/i915/intel_slpc.c
index e7f49db..7fe6e87 100644
--- a/drivers/gpu/drm/i915/intel_slpc.c
+++ b/drivers/gpu/drm/i915/intel_slpc.c
@@ -115,6 +115,23 @@ static void host2guc_slpc_unset_param(struct drm_device *dev,
host2guc_slpc(dev_priv, data, 3);
}

+static void host2guc_slpc_query_task_state(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_gem_object *obj = dev_priv->guc.slpc.shared_data_obj;
+ u32 data[4];
+ u64 shared_data_gtt_offset = i915_gem_obj_ggtt_offset(obj);
+
+ data[0] = HOST2GUC_ACTION_SLPC_REQUEST;
+ data[1] = SLPC_EVENT(SLPC_EVENT_QUERY_TASK_STATE, 2);
+ data[2] = lower_32_bits(shared_data_gtt_offset);
+ data[3] = upper_32_bits(shared_data_gtt_offset);
+
+ WARN_ON(0 != data[3]);
+
+ host2guc_slpc(dev_priv, data, 4);
+}
+
static u8 slpc_get_platform_sku(struct drm_i915_gem_object *obj)
{
struct drm_device *dev = obj->base.dev;
@@ -459,3 +476,9 @@ void intel_slpc_get_param(struct drm_device *dev, enum slpc_param_id id,
kunmap_atomic(data);
}
}
+
+void intel_slpc_query_task_state(struct drm_device *dev)
+{
+ if (intel_slpc_active(dev))
+ host2guc_slpc_query_task_state(dev);
+}
diff --git a/drivers/gpu/drm/i915/intel_slpc.h b/drivers/gpu/drm/i915/intel_slpc.h
index b7ad440..338c6c6 100644
--- a/drivers/gpu/drm/i915/intel_slpc.h
+++ b/drivers/gpu/drm/i915/intel_slpc.h
@@ -205,4 +205,5 @@ void intel_slpc_set_param(struct drm_device *dev, enum slpc_param_id id,
u32 value);
void intel_slpc_get_param(struct drm_device *dev, enum slpc_param_id id,
int *overriding, u32 *value);
+void intel_slpc_query_task_state(struct drm_device *dev);
#endif