17  * DOC: Xe GT Throttle
19  * Provides sysfs entries and other helpers for frequency throttle reasons in GT
21  * device/gt#/freq0/throttle/status - Overall status
22  * device/gt#/freq0/throttle/reason_pl1 - Frequency throttle due to PL1
23  * device/gt#/freq0/throttle/reason_pl2 - Frequency throttle due to PL2
24  * device/gt#/freq0/throttle/reason_pl4 - Frequency throttle due to PL4, Iccmax etc.
25  * device/gt#/freq0/throttle/reason_thermal - Frequency throttle due to thermal
26  * device/gt#/freq0/throttle/reason_prochot - Frequency throttle due to prochot
27  * device/gt#/freq0/throttle/reason_ratl - Frequency throttle due to RATL
28  * device/gt#/freq0/throttle/reason_vr_thermalert - Frequency throttle due to VR THERMALERT
29  * device/gt#/freq0/throttle/reason_vr_tdc -  Frequency throttle due to VR TDC
38 u32 xe_gt_throttle_get_limit_reasons(struct xe_gt *gt)  in xe_gt_throttle_get_limit_reasons()  argument
42 	xe_pm_runtime_get(gt_to_xe(gt));  in xe_gt_throttle_get_limit_reasons()
43 	if (xe_gt_is_media_type(gt))  in xe_gt_throttle_get_limit_reasons()
44 		reg = xe_mmio_read32(gt, MTL_MEDIA_PERF_LIMIT_REASONS);  in xe_gt_throttle_get_limit_reasons()
46 		reg = xe_mmio_read32(gt, GT0_PERF_LIMIT_REASONS);  in xe_gt_throttle_get_limit_reasons()
47 	xe_pm_runtime_put(gt_to_xe(gt));  in xe_gt_throttle_get_limit_reasons()
52 static u32 read_status(struct xe_gt *gt)  in read_status()  argument
54 	u32 status = xe_gt_throttle_get_limit_reasons(gt) & GT0_PERF_LIMIT_REASONS_MASK;  in read_status()
59 static u32 read_reason_pl1(struct xe_gt *gt)  in read_reason_pl1()  argument
61 	u32 pl1 = xe_gt_throttle_get_limit_reasons(gt) & POWER_LIMIT_1_MASK;  in read_reason_pl1()
66 static u32 read_reason_pl2(struct xe_gt *gt)  in read_reason_pl2()  argument
68 	u32 pl2 = xe_gt_throttle_get_limit_reasons(gt) & POWER_LIMIT_2_MASK;  in read_reason_pl2()
73 static u32 read_reason_pl4(struct xe_gt *gt)  in read_reason_pl4()  argument
75 	u32 pl4 = xe_gt_throttle_get_limit_reasons(gt) & POWER_LIMIT_4_MASK;  in read_reason_pl4()
80 static u32 read_reason_thermal(struct xe_gt *gt)  in read_reason_thermal()  argument
82 	u32 thermal = xe_gt_throttle_get_limit_reasons(gt) & THERMAL_LIMIT_MASK;  in read_reason_thermal()
87 static u32 read_reason_prochot(struct xe_gt *gt)  in read_reason_prochot()  argument
89 	u32 prochot = xe_gt_throttle_get_limit_reasons(gt) & PROCHOT_MASK;  in read_reason_prochot()
94 static u32 read_reason_ratl(struct xe_gt *gt)  in read_reason_ratl()  argument
96 	u32 ratl = xe_gt_throttle_get_limit_reasons(gt) & RATL_MASK;  in read_reason_ratl()
101 static u32 read_reason_vr_thermalert(struct xe_gt *gt)  in read_reason_vr_thermalert()  argument
103 	u32 thermalert = xe_gt_throttle_get_limit_reasons(gt) & VR_THERMALERT_MASK;  in read_reason_vr_thermalert()
108 static u32 read_reason_vr_tdc(struct xe_gt *gt)  in read_reason_vr_tdc()  argument
110 	u32 tdc = xe_gt_throttle_get_limit_reasons(gt) & VR_TDC_MASK;  in read_reason_vr_tdc()
119 	struct xe_gt *gt = dev_to_gt(dev);  in status_show()  local
120 	bool status = !!read_status(gt);  in status_show()
130 	struct xe_gt *gt = dev_to_gt(dev);  in reason_pl1_show()  local
131 	bool pl1 = !!read_reason_pl1(gt);  in reason_pl1_show()
141 	struct xe_gt *gt = dev_to_gt(dev);  in reason_pl2_show()  local
142 	bool pl2 = !!read_reason_pl2(gt);  in reason_pl2_show()
152 	struct xe_gt *gt = dev_to_gt(dev);  in reason_pl4_show()  local
153 	bool pl4 = !!read_reason_pl4(gt);  in reason_pl4_show()
163 	struct xe_gt *gt = dev_to_gt(dev);  in reason_thermal_show()  local
164 	bool thermal = !!read_reason_thermal(gt);  in reason_thermal_show()
174 	struct xe_gt *gt = dev_to_gt(dev);  in reason_prochot_show()  local
175 	bool prochot = !!read_reason_prochot(gt);  in reason_prochot_show()
185 	struct xe_gt *gt = dev_to_gt(dev);  in reason_ratl_show()  local
186 	bool ratl = !!read_reason_ratl(gt);  in reason_ratl_show()
196 	struct xe_gt *gt = dev_to_gt(dev);  in reason_vr_thermalert_show()  local
197 	bool thermalert = !!read_reason_vr_thermalert(gt);  in reason_vr_thermalert_show()
207 	struct xe_gt *gt = dev_to_gt(dev);  in reason_vr_tdc_show()  local
208 	bool tdc = !!read_reason_vr_tdc(gt);  in reason_vr_tdc_show()
234 	struct xe_gt *gt = arg;  in gt_throttle_sysfs_fini()  local
236 	sysfs_remove_group(gt->freq, &throttle_group_attrs);  in gt_throttle_sysfs_fini()
239 int xe_gt_throttle_init(struct xe_gt *gt)  in xe_gt_throttle_init()  argument
241 	struct xe_device *xe = gt_to_xe(gt);  in xe_gt_throttle_init()
244 	err = sysfs_create_group(gt->freq, &throttle_group_attrs);  in xe_gt_throttle_init()
248 	return devm_add_action_or_reset(xe->drm.dev, gt_throttle_sysfs_fini, gt);  in xe_gt_throttle_init()