1 // SPDX-License-Identifier: MIT
18 		pr_err("Could not set min frequency to [%u]\n", freq);  in slpc_set_min_freq()
31 		pr_err("Could not set maximum frequency [%u]\n",  in slpc_set_max_freq()
42 	struct intel_gt *gt = &i915->gt;  in live_slpc_clamp_min()
43 	struct intel_guc_slpc *slpc = &gt->uc.guc.slpc;  in live_slpc_clamp_min()
44 	struct intel_rps *rps = &gt->rps;  in live_slpc_clamp_min()
51 	if (!intel_uc_uses_guc_slpc(&gt->uc))  in live_slpc_clamp_min()
55 		return -ENOMEM;  in live_slpc_clamp_min()
58 		pr_err("Could not get SLPC max freq\n");  in live_slpc_clamp_min()
59 		return -EIO;  in live_slpc_clamp_min()
64 		return -EIO;  in live_slpc_clamp_min()
68 		pr_err("Min/Max are fused to the same value\n");  in live_slpc_clamp_min()
69 		return -EINVAL;  in live_slpc_clamp_min()
82 		/* Go from min to max in 5 steps */  in live_slpc_clamp_min()
83 		step = (slpc_max_freq - slpc_min_freq) / NUM_STEPS;  in live_slpc_clamp_min()
94 							engine->kernel_context,  in live_slpc_clamp_min()
106 				       engine->name);  in live_slpc_clamp_min()
109 				intel_gt_set_wedged(engine->gt);  in live_slpc_clamp_min()
110 				err = -EIO;  in live_slpc_clamp_min()
115 			 * requested frequency if necessary.  in live_slpc_clamp_min()
122 			if (req_freq < (min_freq - FREQUENCY_REQ_UNIT)) {  in live_slpc_clamp_min()
124 				       min_freq - FREQUENCY_REQ_UNIT);  in live_slpc_clamp_min()
127 				err = -EINVAL;  in live_slpc_clamp_min()
139 		pr_info("Max actual frequency for %s was %d\n",  in live_slpc_clamp_min()
140 			engine->name, max_act_freq);  in live_slpc_clamp_min()
142 		/* Actual frequency should rise above min */  in live_slpc_clamp_min()
145 			err = -EINVAL;  in live_slpc_clamp_min()
152 	/* Restore min/max frequencies */  in live_slpc_clamp_min()
156 	if (igt_flush_test(gt->i915))  in live_slpc_clamp_min()
157 		err = -EIO;  in live_slpc_clamp_min()
169 	struct intel_gt *gt = &i915->gt;  in live_slpc_clamp_max()
178 	slpc = &gt->uc.guc.slpc;  in live_slpc_clamp_max()
179 	rps = &gt->rps;  in live_slpc_clamp_max()
181 	if (!intel_uc_uses_guc_slpc(&gt->uc))  in live_slpc_clamp_max()
185 		return -ENOMEM;  in live_slpc_clamp_max()
188 		pr_err("Could not get SLPC max freq\n");  in live_slpc_clamp_max()
189 		return -EIO;  in live_slpc_clamp_max()
194 		return -EIO;  in live_slpc_clamp_max()
198 		pr_err("Min/Max are fused to the same value\n");  in live_slpc_clamp_max()
199 		return -EINVAL;  in live_slpc_clamp_max()
213 		/* Go from max to min in 5 steps */  in live_slpc_clamp_max()
214 		step = (slpc_max_freq - slpc_min_freq) / NUM_STEPS;  in live_slpc_clamp_max()
217 					max_freq -= step) {  in live_slpc_clamp_max()
225 							engine->kernel_context,  in live_slpc_clamp_max()
237 				       engine->name);  in live_slpc_clamp_max()
240 				intel_gt_set_wedged(engine->gt);  in live_slpc_clamp_max()
241 				err = -EIO;  in live_slpc_clamp_max()
256 				err = -EINVAL;  in live_slpc_clamp_max()
271 		pr_info("Max actual frequency for %s was %d\n",  in live_slpc_clamp_max()
272 			engine->name, max_act_freq);  in live_slpc_clamp_max()
274 		/* Actual frequency should rise above min */  in live_slpc_clamp_max()
277 			err = -EINVAL;  in live_slpc_clamp_max()
280 		if (igt_flush_test(gt->i915)) {  in live_slpc_clamp_max()
281 			err = -EIO;  in live_slpc_clamp_max()
289 	/* Restore min/max freq */  in live_slpc_clamp_max()
307 	if (intel_gt_is_wedged(&i915->gt))  in intel_slpc_live_selftests()