drivers/gpu/drm/i915/gt/debugfs_gt_pm.c - linux/kernel/git/bpf/bpf - Git at Google

 // SPDX-License-Identifier: MIT

 /*
  * Copyright © 2019 Intel Corporation
  */

 #include <linux/seq_file.h>

 #include "debugfs_gt.h"
 #include "debugfs_gt_pm.h"
 #include "i915_drv.h"
 #include "intel_gt.h"
 #include "intel_llc.h"
 #include "intel_rc6.h"
 #include "intel_rps.h"
 #include "intel_runtime_pm.h"
 #include "intel_sideband.h"
 #include "intel_uncore.h"

 static int fw_domains_show(struct seq_file *m, void *data)
 {
 	struct intel_gt *gt = m->private;
 	struct intel_uncore *uncore = gt->uncore;
 	struct intel_uncore_forcewake_domain *fw_domain;
 	unsigned int tmp;

 	seq_printf(m, "user.bypass_count = %u\n",
 		   uncore->user_forcewake_count);

 	for_each_fw_domain(fw_domain, uncore, tmp)
 		seq_printf(m, "%s.wake_count = %u\n",
 			   intel_uncore_forcewake_domain_to_str(fw_domain->id),
 			   READ_ONCE(fw_domain->wake_count));

 	return 0;
 }
 DEFINE_GT_DEBUGFS_ATTRIBUTE(fw_domains);

 static void print_rc6_res(struct seq_file *m,
 			  const char *title,
 			  const i915_reg_t reg)
 {
 	struct intel_gt *gt = m->private;
 	intel_wakeref_t wakeref;

 	with_intel_runtime_pm(gt->uncore->rpm, wakeref)
 		seq_printf(m, "%s %u (%llu us)\n", title,
 			   intel_uncore_read(gt->uncore, reg),
 			   intel_rc6_residency_us(&gt->rc6, reg));
 }

 static int vlv_drpc(struct seq_file *m)
 {
 	struct intel_gt *gt = m->private;
 	struct intel_uncore *uncore = gt->uncore;
 	u32 rcctl1, pw_status;

 	pw_status = intel_uncore_read(uncore, VLV_GTLC_PW_STATUS);
 	rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL);

 	seq_printf(m, "RC6 Enabled: %s\n",
 		   yesno(rcctl1 & (GEN7_RC_CTL_TO_MODE |
 					GEN6_RC_CTL_EI_MODE(1))));
 	seq_printf(m, "Render Power Well: %s\n",
 		   (pw_status & VLV_GTLC_PW_RENDER_STATUS_MASK) ? "Up" : "Down");
 	seq_printf(m, "Media Power Well: %s\n",
 		   (pw_status & VLV_GTLC_PW_MEDIA_STATUS_MASK) ? "Up" : "Down");

 	print_rc6_res(m, "Render RC6 residency since boot:", VLV_GT_RENDER_RC6);
 	print_rc6_res(m, "Media RC6 residency since boot:", VLV_GT_MEDIA_RC6);

 	return fw_domains_show(m, NULL);
 }

 static int gen6_drpc(struct seq_file *m)
 {
 	struct intel_gt *gt = m->private;
 	struct drm_i915_private *i915 = gt->i915;
 	struct intel_uncore *uncore = gt->uncore;
 	u32 gt_core_status, rcctl1, rc6vids = 0;
 	u32 gen9_powergate_enable = 0, gen9_powergate_status = 0;

 	gt_core_status = intel_uncore_read_fw(uncore, GEN6_GT_CORE_STATUS);

 	rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL);
 	if (INTEL_GEN(i915) >= 9) {
 		gen9_powergate_enable =
 			intel_uncore_read(uncore, GEN9_PG_ENABLE);
 		gen9_powergate_status =
 			intel_uncore_read(uncore, GEN9_PWRGT_DOMAIN_STATUS);
 	}

 	if (INTEL_GEN(i915) <= 7)
 		sandybridge_pcode_read(i915, GEN6_PCODE_READ_RC6VIDS,
 				       &rc6vids, NULL);

 	seq_printf(m, "RC1e Enabled: %s\n",
 		   yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
 	seq_printf(m, "RC6 Enabled: %s\n",
 		   yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
 	if (INTEL_GEN(i915) >= 9) {
 		seq_printf(m, "Render Well Gating Enabled: %s\n",
 			   yesno(gen9_powergate_enable & GEN9_RENDER_PG_ENABLE));
 		seq_printf(m, "Media Well Gating Enabled: %s\n",
 			   yesno(gen9_powergate_enable & GEN9_MEDIA_PG_ENABLE));
 	}
 	seq_printf(m, "Deep RC6 Enabled: %s\n",
 		   yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
 	seq_printf(m, "Deepest RC6 Enabled: %s\n",
 		   yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
 	seq_puts(m, "Current RC state: ");
 	switch (gt_core_status & GEN6_RCn_MASK) {
 	case GEN6_RC0:
 		if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
 			seq_puts(m, "Core Power Down\n");
 		else
 			seq_puts(m, "on\n");
 		break;
 	case GEN6_RC3:
 		seq_puts(m, "RC3\n");
 		break;
 	case GEN6_RC6:
 		seq_puts(m, "RC6\n");
 		break;
 	case GEN6_RC7:
 		seq_puts(m, "RC7\n");
 		break;
 	default:
 		seq_puts(m, "Unknown\n");
 		break;
 	}

 	seq_printf(m, "Core Power Down: %s\n",
 		   yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
 	if (INTEL_GEN(i915) >= 9) {
 		seq_printf(m, "Render Power Well: %s\n",
 			   (gen9_powergate_status &
 			    GEN9_PWRGT_RENDER_STATUS_MASK) ? "Up" : "Down");
 		seq_printf(m, "Media Power Well: %s\n",
 			   (gen9_powergate_status &
 			    GEN9_PWRGT_MEDIA_STATUS_MASK) ? "Up" : "Down");
 	}

 	/* Not exactly sure what this is */
 	print_rc6_res(m, "RC6 \"Locked to RPn\" residency since boot:",
 		      GEN6_GT_GFX_RC6_LOCKED);
 	print_rc6_res(m, "RC6 residency since boot:", GEN6_GT_GFX_RC6);
 	print_rc6_res(m, "RC6+ residency since boot:", GEN6_GT_GFX_RC6p);
 	print_rc6_res(m, "RC6++ residency since boot:", GEN6_GT_GFX_RC6pp);

 	if (INTEL_GEN(i915) <= 7) {
 		seq_printf(m, "RC6   voltage: %dmV\n",
 			   GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
 		seq_printf(m, "RC6+  voltage: %dmV\n",
 			   GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
 		seq_printf(m, "RC6++ voltage: %dmV\n",
 			   GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
 	}

 	return fw_domains_show(m, NULL);
 }

 static int ilk_drpc(struct seq_file *m)
 {
 	struct intel_gt *gt = m->private;
 	struct intel_uncore *uncore = gt->uncore;
 	u32 rgvmodectl, rstdbyctl;
 	u16 crstandvid;

 	rgvmodectl = intel_uncore_read(uncore, MEMMODECTL);
 	rstdbyctl = intel_uncore_read(uncore, RSTDBYCTL);
 	crstandvid = intel_uncore_read16(uncore, CRSTANDVID);

 	seq_printf(m, "HD boost: %s\n", yesno(rgvmodectl & MEMMODE_BOOST_EN));
 	seq_printf(m, "Boost freq: %d\n",
 		   (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 		   MEMMODE_BOOST_FREQ_SHIFT);
 	seq_printf(m, "HW control enabled: %s\n",
 		   yesno(rgvmodectl & MEMMODE_HWIDLE_EN));
 	seq_printf(m, "SW control enabled: %s\n",
 		   yesno(rgvmodectl & MEMMODE_SWMODE_EN));
 	seq_printf(m, "Gated voltage change: %s\n",
 		   yesno(rgvmodectl & MEMMODE_RCLK_GATE));
 	seq_printf(m, "Starting frequency: P%d\n",
 		   (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
 	seq_printf(m, "Max P-state: P%d\n",
 		   (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
 	seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
 	seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
 	seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
 	seq_printf(m, "Render standby enabled: %s\n",
 		   yesno(!(rstdbyctl & RCX_SW_EXIT)));
 	seq_puts(m, "Current RS state: ");
 	switch (rstdbyctl & RSX_STATUS_MASK) {
 	case RSX_STATUS_ON:
 		seq_puts(m, "on\n");
 		break;
 	case RSX_STATUS_RC1:
 		seq_puts(m, "RC1\n");
 		break;
 	case RSX_STATUS_RC1E:
 		seq_puts(m, "RC1E\n");
 		break;
 	case RSX_STATUS_RS1:
 		seq_puts(m, "RS1\n");
 		break;
 	case RSX_STATUS_RS2:
 		seq_puts(m, "RS2 (RC6)\n");
 		break;
 	case RSX_STATUS_RS3:
 		seq_puts(m, "RC3 (RC6+)\n");
 		break;
 	default:
 		seq_puts(m, "unknown\n");
 		break;
 	}

 	return 0;
 }

 static int drpc_show(struct seq_file *m, void *unused)
 {
 	struct intel_gt *gt = m->private;
 	struct drm_i915_private *i915 = gt->i915;
 	intel_wakeref_t wakeref;
 	int err = -ENODEV;

 	with_intel_runtime_pm(gt->uncore->rpm, wakeref) {
 		if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
 			err = vlv_drpc(m);
 		else if (INTEL_GEN(i915) >= 6)
 			err = gen6_drpc(m);
 		else
 			err = ilk_drpc(m);
 	}

 	return err;
 }
 DEFINE_GT_DEBUGFS_ATTRIBUTE(drpc);

 static int frequency_show(struct seq_file *m, void *unused)
 {
 	struct intel_gt *gt = m->private;
 	struct drm_i915_private *i915 = gt->i915;
 	struct intel_uncore *uncore = gt->uncore;
 	struct intel_rps *rps = &gt->rps;
 	intel_wakeref_t wakeref;

 	wakeref = intel_runtime_pm_get(uncore->rpm);

 	if (IS_GEN(i915, 5)) {
 		u16 rgvswctl = intel_uncore_read16(uncore, MEMSWCTL);
 		u16 rgvstat = intel_uncore_read16(uncore, MEMSTAT_ILK);

 		seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 		seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 		seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 			   MEMSTAT_VID_SHIFT);
 		seq_printf(m, "Current P-state: %d\n",
 			   (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 	} else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) {
 		u32 rpmodectl, freq_sts;

 		rpmodectl = intel_uncore_read(uncore, GEN6_RP_CONTROL);
 		seq_printf(m, "Video Turbo Mode: %s\n",
 			   yesno(rpmodectl & GEN6_RP_MEDIA_TURBO));
 		seq_printf(m, "HW control enabled: %s\n",
 			   yesno(rpmodectl & GEN6_RP_ENABLE));
 		seq_printf(m, "SW control enabled: %s\n",
 			   yesno((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) ==
 				  GEN6_RP_MEDIA_SW_MODE));

 		vlv_punit_get(i915);
 		freq_sts = vlv_punit_read(i915, PUNIT_REG_GPU_FREQ_STS);
 		vlv_punit_put(i915);

 		seq_printf(m, "PUNIT_REG_GPU_FREQ_STS: 0x%08x\n", freq_sts);
 		seq_printf(m, "DDR freq: %d MHz\n", i915->mem_freq);

 		seq_printf(m, "actual GPU freq: %d MHz\n",
 			   intel_gpu_freq(rps, (freq_sts >> 8) & 0xff));

 		seq_printf(m, "current GPU freq: %d MHz\n",
 			   intel_gpu_freq(rps, rps->cur_freq));

 		seq_printf(m, "max GPU freq: %d MHz\n",
 			   intel_gpu_freq(rps, rps->max_freq));

 		seq_printf(m, "min GPU freq: %d MHz\n",
 			   intel_gpu_freq(rps, rps->min_freq));

 		seq_printf(m, "idle GPU freq: %d MHz\n",
 			   intel_gpu_freq(rps, rps->idle_freq));

 		seq_printf(m, "efficient (RPe) frequency: %d MHz\n",
 			   intel_gpu_freq(rps, rps->efficient_freq));
 	} else if (INTEL_GEN(i915) >= 6) {
 		u32 rp_state_limits;
 		u32 gt_perf_status;
 		u32 rp_state_cap;
 		u32 rpmodectl, rpinclimit, rpdeclimit;
 		u32 rpstat, cagf, reqf;
 		u32 rpupei, rpcurup, rpprevup;
 		u32 rpdownei, rpcurdown, rpprevdown;
 		u32 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask;
 		int max_freq;

 		rp_state_limits = intel_uncore_read(uncore, GEN6_RP_STATE_LIMITS);
 		if (IS_GEN9_LP(i915)) {
 			rp_state_cap = intel_uncore_read(uncore, BXT_RP_STATE_CAP);
 			gt_perf_status = intel_uncore_read(uncore, BXT_GT_PERF_STATUS);
 		} else {
 			rp_state_cap = intel_uncore_read(uncore, GEN6_RP_STATE_CAP);
 			gt_perf_status = intel_uncore_read(uncore, GEN6_GT_PERF_STATUS);
 		}

 		/* RPSTAT1 is in the GT power well */
 		intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);

 		reqf = intel_uncore_read(uncore, GEN6_RPNSWREQ);
 		if (INTEL_GEN(i915) >= 9) {
 			reqf >>= 23;
 		} else {
 			reqf &= ~GEN6_TURBO_DISABLE;
 			if (IS_HASWELL(i915) || IS_BROADWELL(i915))
 				reqf >>= 24;
 			else
 				reqf >>= 25;
 		}
 		reqf = intel_gpu_freq(rps, reqf);

 		rpmodectl = intel_uncore_read(uncore, GEN6_RP_CONTROL);
 		rpinclimit = intel_uncore_read(uncore, GEN6_RP_UP_THRESHOLD);
 		rpdeclimit = intel_uncore_read(uncore, GEN6_RP_DOWN_THRESHOLD);

 		rpstat = intel_uncore_read(uncore, GEN6_RPSTAT1);
 		rpupei = intel_uncore_read(uncore, GEN6_RP_CUR_UP_EI) & GEN6_CURICONT_MASK;
 		rpcurup = intel_uncore_read(uncore, GEN6_RP_CUR_UP) & GEN6_CURBSYTAVG_MASK;
 		rpprevup = intel_uncore_read(uncore, GEN6_RP_PREV_UP) & GEN6_CURBSYTAVG_MASK;
 		rpdownei = intel_uncore_read(uncore, GEN6_RP_CUR_DOWN_EI) & GEN6_CURIAVG_MASK;
 		rpcurdown = intel_uncore_read(uncore, GEN6_RP_CUR_DOWN) & GEN6_CURBSYTAVG_MASK;
 		rpprevdown = intel_uncore_read(uncore, GEN6_RP_PREV_DOWN) & GEN6_CURBSYTAVG_MASK;
 		cagf = intel_rps_read_actual_frequency(rps);

 		intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);

 		if (INTEL_GEN(i915) >= 11) {
 			pm_ier = intel_uncore_read(uncore, GEN11_GPM_WGBOXPERF_INTR_ENABLE);
 			pm_imr = intel_uncore_read(uncore, GEN11_GPM_WGBOXPERF_INTR_MASK);
 			/*
 			 * The equivalent to the PM ISR & IIR cannot be read
 			 * without affecting the current state of the system
 			 */
 			pm_isr = 0;
 			pm_iir = 0;
 		} else if (INTEL_GEN(i915) >= 8) {
 			pm_ier = intel_uncore_read(uncore, GEN8_GT_IER(2));
 			pm_imr = intel_uncore_read(uncore, GEN8_GT_IMR(2));
 			pm_isr = intel_uncore_read(uncore, GEN8_GT_ISR(2));
 			pm_iir = intel_uncore_read(uncore, GEN8_GT_IIR(2));
 		} else {
 			pm_ier = intel_uncore_read(uncore, GEN6_PMIER);
 			pm_imr = intel_uncore_read(uncore, GEN6_PMIMR);
 			pm_isr = intel_uncore_read(uncore, GEN6_PMISR);
 			pm_iir = intel_uncore_read(uncore, GEN6_PMIIR);
 		}
 		pm_mask = intel_uncore_read(uncore, GEN6_PMINTRMSK);

 		seq_printf(m, "Video Turbo Mode: %s\n",
 			   yesno(rpmodectl & GEN6_RP_MEDIA_TURBO));
 		seq_printf(m, "HW control enabled: %s\n",
 			   yesno(rpmodectl & GEN6_RP_ENABLE));
 		seq_printf(m, "SW control enabled: %s\n",
 			   yesno((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) ==
 				  GEN6_RP_MEDIA_SW_MODE));

 		seq_printf(m, "PM IER=0x%08x IMR=0x%08x, MASK=0x%08x\n",
 			   pm_ier, pm_imr, pm_mask);
 		if (INTEL_GEN(i915) <= 10)
 			seq_printf(m, "PM ISR=0x%08x IIR=0x%08x\n",
 				   pm_isr, pm_iir);
 		seq_printf(m, "pm_intrmsk_mbz: 0x%08x\n",
 			   rps->pm_intrmsk_mbz);
 		seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 		seq_printf(m, "Render p-state ratio: %d\n",
 			   (gt_perf_status & (INTEL_GEN(i915) >= 9 ? 0x1ff00 : 0xff00)) >> 8);
 		seq_printf(m, "Render p-state VID: %d\n",
 			   gt_perf_status & 0xff);
 		seq_printf(m, "Render p-state limit: %d\n",
 			   rp_state_limits & 0xff);
 		seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 		seq_printf(m, "RPMODECTL: 0x%08x\n", rpmodectl);
 		seq_printf(m, "RPINCLIMIT: 0x%08x\n", rpinclimit);
 		seq_printf(m, "RPDECLIMIT: 0x%08x\n", rpdeclimit);
 		seq_printf(m, "RPNSWREQ: %dMHz\n", reqf);
 		seq_printf(m, "CAGF: %dMHz\n", cagf);
 		seq_printf(m, "RP CUR UP EI: %d (%dus)\n",
 			   rpupei, GT_PM_INTERVAL_TO_US(i915, rpupei));
 		seq_printf(m, "RP CUR UP: %d (%dus)\n",
 			   rpcurup, GT_PM_INTERVAL_TO_US(i915, rpcurup));
 		seq_printf(m, "RP PREV UP: %d (%dus)\n",
 			   rpprevup, GT_PM_INTERVAL_TO_US(i915, rpprevup));
 		seq_printf(m, "Up threshold: %d%%\n",
 			   rps->power.up_threshold);

 		seq_printf(m, "RP CUR DOWN EI: %d (%dus)\n",
 			   rpdownei, GT_PM_INTERVAL_TO_US(i915, rpdownei));
 		seq_printf(m, "RP CUR DOWN: %d (%dus)\n",
 			   rpcurdown, GT_PM_INTERVAL_TO_US(i915, rpcurdown));
 		seq_printf(m, "RP PREV DOWN: %d (%dus)\n",
 			   rpprevdown, GT_PM_INTERVAL_TO_US(i915, rpprevdown));
 		seq_printf(m, "Down threshold: %d%%\n",
 			   rps->power.down_threshold);

 		max_freq = (IS_GEN9_LP(i915) ? rp_state_cap >> 0 :
 			    rp_state_cap >> 16) & 0xff;
 		max_freq *= (IS_GEN9_BC(i915) ||
 			     INTEL_GEN(i915) >= 10 ? GEN9_FREQ_SCALER : 1);
 		seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 			   intel_gpu_freq(rps, max_freq));

 		max_freq = (rp_state_cap & 0xff00) >> 8;
 		max_freq *= (IS_GEN9_BC(i915) ||
 			     INTEL_GEN(i915) >= 10 ? GEN9_FREQ_SCALER : 1);
 		seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 			   intel_gpu_freq(rps, max_freq));

 		max_freq = (IS_GEN9_LP(i915) ? rp_state_cap >> 16 :
 			    rp_state_cap >> 0) & 0xff;
 		max_freq *= (IS_GEN9_BC(i915) ||
 			     INTEL_GEN(i915) >= 10 ? GEN9_FREQ_SCALER : 1);
 		seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 			   intel_gpu_freq(rps, max_freq));
 		seq_printf(m, "Max overclocked frequency: %dMHz\n",
 			   intel_gpu_freq(rps, rps->max_freq));

 		seq_printf(m, "Current freq: %d MHz\n",
 			   intel_gpu_freq(rps, rps->cur_freq));
 		seq_printf(m, "Actual freq: %d MHz\n", cagf);
 		seq_printf(m, "Idle freq: %d MHz\n",
 			   intel_gpu_freq(rps, rps->idle_freq));
 		seq_printf(m, "Min freq: %d MHz\n",
 			   intel_gpu_freq(rps, rps->min_freq));
 		seq_printf(m, "Boost freq: %d MHz\n",
 			   intel_gpu_freq(rps, rps->boost_freq));
 		seq_printf(m, "Max freq: %d MHz\n",
 			   intel_gpu_freq(rps, rps->max_freq));
 		seq_printf(m,
 			   "efficient (RPe) frequency: %d MHz\n",
 			   intel_gpu_freq(rps, rps->efficient_freq));
 	} else {
 		seq_puts(m, "no P-state info available\n");
 	}

 	seq_printf(m, "Current CD clock frequency: %d kHz\n", i915->cdclk.hw.cdclk);
 	seq_printf(m, "Max CD clock frequency: %d kHz\n", i915->max_cdclk_freq);
 	seq_printf(m, "Max pixel clock frequency: %d kHz\n", i915->max_dotclk_freq);

 	intel_runtime_pm_put(uncore->rpm, wakeref);

 	return 0;
 }
 DEFINE_GT_DEBUGFS_ATTRIBUTE(frequency);

 static int llc_show(struct seq_file *m, void *data)
 {
 	struct intel_gt *gt = m->private;
 	struct drm_i915_private *i915 = gt->i915;
 	const bool edram = INTEL_GEN(i915) > 8;
 	struct intel_rps *rps = &gt->rps;
 	unsigned int max_gpu_freq, min_gpu_freq;
 	intel_wakeref_t wakeref;
 	int gpu_freq, ia_freq;

 	seq_printf(m, "LLC: %s\n", yesno(HAS_LLC(i915)));
 	seq_printf(m, "%s: %uMB\n", edram ? "eDRAM" : "eLLC",
 		   i915->edram_size_mb);

 	min_gpu_freq = rps->min_freq;
 	max_gpu_freq = rps->max_freq;
 	if (IS_GEN9_BC(i915) || INTEL_GEN(i915) >= 10) {
 		/* Convert GT frequency to 50 HZ units */
 		min_gpu_freq /= GEN9_FREQ_SCALER;
 		max_gpu_freq /= GEN9_FREQ_SCALER;
 	}

 	seq_puts(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring freq (MHz)\n");

 	wakeref = intel_runtime_pm_get(gt->uncore->rpm);
 	for (gpu_freq = min_gpu_freq; gpu_freq <= max_gpu_freq; gpu_freq++) {
 		ia_freq = gpu_freq;
 		sandybridge_pcode_read(i915,
 				       GEN6_PCODE_READ_MIN_FREQ_TABLE,
 				       &ia_freq, NULL);
 		seq_printf(m, "%d\t\t%d\t\t\t\t%d\n",
 			   intel_gpu_freq(rps,
 					  (gpu_freq *
 					   (IS_GEN9_BC(i915) ||
 					    INTEL_GEN(i915) >= 10 ?
 					    GEN9_FREQ_SCALER : 1))),
 			   ((ia_freq >> 0) & 0xff) * 100,
 			   ((ia_freq >> 8) & 0xff) * 100);
 	}
 	intel_runtime_pm_put(gt->uncore->rpm, wakeref);

 	return 0;
 }

 static bool llc_eval(const struct intel_gt *gt)
 {
 	return HAS_LLC(gt->i915);
 }

 DEFINE_GT_DEBUGFS_ATTRIBUTE(llc);

 static const char *rps_power_to_str(unsigned int power)
 {
 	static const char * const strings[] = {
 		[LOW_POWER] = "low power",
 		[BETWEEN] = "mixed",
 		[HIGH_POWER] = "high power",
 	};

 	if (power >= ARRAY_SIZE(strings) || !strings[power])
 		return "unknown";

 	return strings[power];
 }

 static int rps_boost_show(struct seq_file *m, void *data)
 {
 	struct intel_gt *gt = m->private;
 	struct drm_i915_private *i915 = gt->i915;
 	struct intel_rps *rps = &gt->rps;

 	seq_printf(m, "RPS enabled? %d\n", rps->enabled);
 	seq_printf(m, "GPU busy? %s\n", yesno(gt->awake));
 	seq_printf(m, "Boosts outstanding? %d\n",
 		   atomic_read(&rps->num_waiters));
 	seq_printf(m, "Interactive? %d\n", READ_ONCE(rps->power.interactive));
 	seq_printf(m, "Frequency requested %d, actual %d\n",
 		   intel_gpu_freq(rps, rps->cur_freq),
 		   intel_rps_read_actual_frequency(rps));
 	seq_printf(m, "  min hard:%d, soft:%d; max soft:%d, hard:%d\n",
 		   intel_gpu_freq(rps, rps->min_freq),
 		   intel_gpu_freq(rps, rps->min_freq_softlimit),
 		   intel_gpu_freq(rps, rps->max_freq_softlimit),
 		   intel_gpu_freq(rps, rps->max_freq));
 	seq_printf(m, "  idle:%d, efficient:%d, boost:%d\n",
 		   intel_gpu_freq(rps, rps->idle_freq),
 		   intel_gpu_freq(rps, rps->efficient_freq),
 		   intel_gpu_freq(rps, rps->boost_freq));

 	seq_printf(m, "Wait boosts: %d\n", atomic_read(&rps->boosts));

 	if (INTEL_GEN(i915) >= 6 && rps->enabled && gt->awake) {
 		struct intel_uncore *uncore = gt->uncore;
 		u32 rpup, rpupei;
 		u32 rpdown, rpdownei;

 		intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
 		rpup = intel_uncore_read_fw(uncore, GEN6_RP_CUR_UP) & GEN6_RP_EI_MASK;
 		rpupei = intel_uncore_read_fw(uncore, GEN6_RP_CUR_UP_EI) & GEN6_RP_EI_MASK;
 		rpdown = intel_uncore_read_fw(uncore, GEN6_RP_CUR_DOWN) & GEN6_RP_EI_MASK;
 		rpdownei = intel_uncore_read_fw(uncore, GEN6_RP_CUR_DOWN_EI) & GEN6_RP_EI_MASK;
 		intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);

 		seq_printf(m, "\nRPS Autotuning (current \"%s\" window):\n",
 			   rps_power_to_str(rps->power.mode));
 		seq_printf(m, "  Avg. up: %d%% [above threshold? %d%%]\n",
 			   rpup && rpupei ? 100 * rpup / rpupei : 0,
 			   rps->power.up_threshold);
 		seq_printf(m, "  Avg. down: %d%% [below threshold? %d%%]\n",
 			   rpdown && rpdownei ? 100 * rpdown / rpdownei : 0,
 			   rps->power.down_threshold);
 	} else {
 		seq_puts(m, "\nRPS Autotuning inactive\n");
 	}

 	return 0;
 }

 static bool rps_eval(const struct intel_gt *gt)
 {
 	return HAS_RPS(gt->i915);
 }

 DEFINE_GT_DEBUGFS_ATTRIBUTE(rps_boost);

 void debugfs_gt_pm_register(struct intel_gt *gt, struct dentry *root)
 {
 	static const struct debugfs_gt_file files[] = {
 		{ "drpc", &drpc_fops, NULL },
 		{ "frequency", &frequency_fops, NULL },
 		{ "forcewake", &fw_domains_fops, NULL },
 		{ "llc", &llc_fops, llc_eval },
 		{ "rps_boost", &rps_boost_fops, rps_eval },
 	};

 	debugfs_gt_register_files(gt, root, files, ARRAY_SIZE(files));
 }
	// SPDX-License-Identifier: MIT

	/*
	* Copyright © 2019 Intel Corporation
	*/

	#include <linux/seq_file.h>

	#include "debugfs_gt.h"
	#include "debugfs_gt_pm.h"
	#include "i915_drv.h"
	#include "intel_gt.h"
	#include "intel_llc.h"
	#include "intel_rc6.h"
	#include "intel_rps.h"
	#include "intel_runtime_pm.h"
	#include "intel_sideband.h"
	#include "intel_uncore.h"

	static int fw_domains_show(struct seq_file m, void data)
	{
	struct intel_gt *gt = m->private;
	struct intel_uncore *uncore = gt->uncore;
	struct intel_uncore_forcewake_domain *fw_domain;
	unsigned int tmp;

	seq_printf(m, "user.bypass_count = %u\n",
	uncore->user_forcewake_count);

	for_each_fw_domain(fw_domain, uncore, tmp)
	seq_printf(m, "%s.wake_count = %u\n",
	intel_uncore_forcewake_domain_to_str(fw_domain->id),
	READ_ONCE(fw_domain->wake_count));

	return 0;
	}
	DEFINE_GT_DEBUGFS_ATTRIBUTE(fw_domains);

	static void print_rc6_res(struct seq_file *m,
	const char *title,
	const i915_reg_t reg)
	{
	struct intel_gt *gt = m->private;
	intel_wakeref_t wakeref;

	with_intel_runtime_pm(gt->uncore->rpm, wakeref)
	seq_printf(m, "%s %u (%llu us)\n", title,
	intel_uncore_read(gt->uncore, reg),
	intel_rc6_residency_us(&gt->rc6, reg));
	}

	static int vlv_drpc(struct seq_file *m)
	{
	struct intel_gt *gt = m->private;
	struct intel_uncore *uncore = gt->uncore;
	u32 rcctl1, pw_status;

	pw_status = intel_uncore_read(uncore, VLV_GTLC_PW_STATUS);
	rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL);

	seq_printf(m, "RC6 Enabled: %s\n",
	yesno(rcctl1 & (GEN7_RC_CTL_TO_MODE \|
	GEN6_RC_CTL_EI_MODE(1))));
	seq_printf(m, "Render Power Well: %s\n",
	(pw_status & VLV_GTLC_PW_RENDER_STATUS_MASK) ? "Up" : "Down");
	seq_printf(m, "Media Power Well: %s\n",
	(pw_status & VLV_GTLC_PW_MEDIA_STATUS_MASK) ? "Up" : "Down");

	print_rc6_res(m, "Render RC6 residency since boot:", VLV_GT_RENDER_RC6);
	print_rc6_res(m, "Media RC6 residency since boot:", VLV_GT_MEDIA_RC6);

	return fw_domains_show(m, NULL);
	}

	static int gen6_drpc(struct seq_file *m)
	{
	struct intel_gt *gt = m->private;
	struct drm_i915_private *i915 = gt->i915;
	struct intel_uncore *uncore = gt->uncore;
	u32 gt_core_status, rcctl1, rc6vids = 0;
	u32 gen9_powergate_enable = 0, gen9_powergate_status = 0;

	gt_core_status = intel_uncore_read_fw(uncore, GEN6_GT_CORE_STATUS);

	rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL);
	if (INTEL_GEN(i915) >= 9) {
	gen9_powergate_enable =
	intel_uncore_read(uncore, GEN9_PG_ENABLE);
	gen9_powergate_status =
	intel_uncore_read(uncore, GEN9_PWRGT_DOMAIN_STATUS);
	}

	if (INTEL_GEN(i915) <= 7)
	sandybridge_pcode_read(i915, GEN6_PCODE_READ_RC6VIDS,
	&rc6vids, NULL);

	seq_printf(m, "RC1e Enabled: %s\n",
	yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
	seq_printf(m, "RC6 Enabled: %s\n",
	yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
	if (INTEL_GEN(i915) >= 9) {
	seq_printf(m, "Render Well Gating Enabled: %s\n",
	yesno(gen9_powergate_enable & GEN9_RENDER_PG_ENABLE));
	seq_printf(m, "Media Well Gating Enabled: %s\n",
	yesno(gen9_powergate_enable & GEN9_MEDIA_PG_ENABLE));
	}
	seq_printf(m, "Deep RC6 Enabled: %s\n",
	yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
	seq_printf(m, "Deepest RC6 Enabled: %s\n",
	yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
	seq_puts(m, "Current RC state: ");
	switch (gt_core_status & GEN6_RCn_MASK) {
	case GEN6_RC0:
	if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
	seq_puts(m, "Core Power Down\n");
	else
	seq_puts(m, "on\n");
	break;
	case GEN6_RC3:
	seq_puts(m, "RC3\n");
	break;
	case GEN6_RC6:
	seq_puts(m, "RC6\n");
	break;
	case GEN6_RC7:
	seq_puts(m, "RC7\n");
	break;
	default:
	seq_puts(m, "Unknown\n");
	break;
	}

	seq_printf(m, "Core Power Down: %s\n",
	yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
	if (INTEL_GEN(i915) >= 9) {
	seq_printf(m, "Render Power Well: %s\n",
	(gen9_powergate_status &
	GEN9_PWRGT_RENDER_STATUS_MASK) ? "Up" : "Down");
	seq_printf(m, "Media Power Well: %s\n",
	(gen9_powergate_status &
	GEN9_PWRGT_MEDIA_STATUS_MASK) ? "Up" : "Down");
	}

	/* Not exactly sure what this is */
	print_rc6_res(m, "RC6 \"Locked to RPn\" residency since boot:",
	GEN6_GT_GFX_RC6_LOCKED);
	print_rc6_res(m, "RC6 residency since boot:", GEN6_GT_GFX_RC6);
	print_rc6_res(m, "RC6+ residency since boot:", GEN6_GT_GFX_RC6p);
	print_rc6_res(m, "RC6++ residency since boot:", GEN6_GT_GFX_RC6pp);

	if (INTEL_GEN(i915) <= 7) {
	seq_printf(m, "RC6 voltage: %dmV\n",
	GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
	seq_printf(m, "RC6+ voltage: %dmV\n",
	GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
	seq_printf(m, "RC6++ voltage: %dmV\n",
	GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
	}

	return fw_domains_show(m, NULL);
	}

	static int ilk_drpc(struct seq_file *m)
	{
	struct intel_gt *gt = m->private;
	struct intel_uncore *uncore = gt->uncore;
	u32 rgvmodectl, rstdbyctl;
	u16 crstandvid;

	rgvmodectl = intel_uncore_read(uncore, MEMMODECTL);
	rstdbyctl = intel_uncore_read(uncore, RSTDBYCTL);
	crstandvid = intel_uncore_read16(uncore, CRSTANDVID);

	seq_printf(m, "HD boost: %s\n", yesno(rgvmodectl & MEMMODE_BOOST_EN));
	seq_printf(m, "Boost freq: %d\n",
	(rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
	MEMMODE_BOOST_FREQ_SHIFT);
	seq_printf(m, "HW control enabled: %s\n",
	yesno(rgvmodectl & MEMMODE_HWIDLE_EN));
	seq_printf(m, "SW control enabled: %s\n",
	yesno(rgvmodectl & MEMMODE_SWMODE_EN));
	seq_printf(m, "Gated voltage change: %s\n",
	yesno(rgvmodectl & MEMMODE_RCLK_GATE));
	seq_printf(m, "Starting frequency: P%d\n",
	(rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
	seq_printf(m, "Max P-state: P%d\n",
	(rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
	seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
	seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
	seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
	seq_printf(m, "Render standby enabled: %s\n",
	yesno(!(rstdbyctl & RCX_SW_EXIT)));
	seq_puts(m, "Current RS state: ");
	switch (rstdbyctl & RSX_STATUS_MASK) {
	case RSX_STATUS_ON:
	seq_puts(m, "on\n");
	break;
	case RSX_STATUS_RC1:
	seq_puts(m, "RC1\n");
	break;
	case RSX_STATUS_RC1E:
	seq_puts(m, "RC1E\n");
	break;
	case RSX_STATUS_RS1:
	seq_puts(m, "RS1\n");
	break;
	case RSX_STATUS_RS2:
	seq_puts(m, "RS2 (RC6)\n");
	break;
	case RSX_STATUS_RS3:
	seq_puts(m, "RC3 (RC6+)\n");
	break;
	default:
	seq_puts(m, "unknown\n");
	break;
	}

	return 0;
	}

	static int drpc_show(struct seq_file m, void unused)
	{
	struct intel_gt *gt = m->private;
	struct drm_i915_private *i915 = gt->i915;
	intel_wakeref_t wakeref;
	int err = -ENODEV;

	with_intel_runtime_pm(gt->uncore->rpm, wakeref) {
	if (IS_VALLEYVIEW(i915) \|\| IS_CHERRYVIEW(i915))
	err = vlv_drpc(m);
	else if (INTEL_GEN(i915) >= 6)
	err = gen6_drpc(m);
	else
	err = ilk_drpc(m);
	}

	return err;
	}
	DEFINE_GT_DEBUGFS_ATTRIBUTE(drpc);

	static int frequency_show(struct seq_file m, void unused)
	{
	struct intel_gt *gt = m->private;
	struct drm_i915_private *i915 = gt->i915;
	struct intel_uncore *uncore = gt->uncore;
	struct intel_rps *rps = &gt->rps;
	intel_wakeref_t wakeref;

	wakeref = intel_runtime_pm_get(uncore->rpm);

	if (IS_GEN(i915, 5)) {
	u16 rgvswctl = intel_uncore_read16(uncore, MEMSWCTL);
	u16 rgvstat = intel_uncore_read16(uncore, MEMSTAT_ILK);

	seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
	seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
	seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
	MEMSTAT_VID_SHIFT);
	seq_printf(m, "Current P-state: %d\n",
	(rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
	} else if (IS_VALLEYVIEW(i915) \|\| IS_CHERRYVIEW(i915)) {
	u32 rpmodectl, freq_sts;

	rpmodectl = intel_uncore_read(uncore, GEN6_RP_CONTROL);
	seq_printf(m, "Video Turbo Mode: %s\n",
	yesno(rpmodectl & GEN6_RP_MEDIA_TURBO));
	seq_printf(m, "HW control enabled: %s\n",
	yesno(rpmodectl & GEN6_RP_ENABLE));
	seq_printf(m, "SW control enabled: %s\n",
	yesno((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) ==
	GEN6_RP_MEDIA_SW_MODE));

	vlv_punit_get(i915);
	freq_sts = vlv_punit_read(i915, PUNIT_REG_GPU_FREQ_STS);
	vlv_punit_put(i915);

	seq_printf(m, "PUNIT_REG_GPU_FREQ_STS: 0x%08x\n", freq_sts);
	seq_printf(m, "DDR freq: %d MHz\n", i915->mem_freq);

	seq_printf(m, "actual GPU freq: %d MHz\n",
	intel_gpu_freq(rps, (freq_sts >> 8) & 0xff));

	seq_printf(m, "current GPU freq: %d MHz\n",
	intel_gpu_freq(rps, rps->cur_freq));

	seq_printf(m, "max GPU freq: %d MHz\n",
	intel_gpu_freq(rps, rps->max_freq));

	seq_printf(m, "min GPU freq: %d MHz\n",
	intel_gpu_freq(rps, rps->min_freq));

	seq_printf(m, "idle GPU freq: %d MHz\n",
	intel_gpu_freq(rps, rps->idle_freq));

	seq_printf(m, "efficient (RPe) frequency: %d MHz\n",
	intel_gpu_freq(rps, rps->efficient_freq));
	} else if (INTEL_GEN(i915) >= 6) {
	u32 rp_state_limits;
	u32 gt_perf_status;
	u32 rp_state_cap;
	u32 rpmodectl, rpinclimit, rpdeclimit;
	u32 rpstat, cagf, reqf;
	u32 rpupei, rpcurup, rpprevup;
	u32 rpdownei, rpcurdown, rpprevdown;
	u32 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask;
	int max_freq;

	rp_state_limits = intel_uncore_read(uncore, GEN6_RP_STATE_LIMITS);
	if (IS_GEN9_LP(i915)) {
	rp_state_cap = intel_uncore_read(uncore, BXT_RP_STATE_CAP);
	gt_perf_status = intel_uncore_read(uncore, BXT_GT_PERF_STATUS);
	} else {
	rp_state_cap = intel_uncore_read(uncore, GEN6_RP_STATE_CAP);
	gt_perf_status = intel_uncore_read(uncore, GEN6_GT_PERF_STATUS);
	}

	/* RPSTAT1 is in the GT power well */
	intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);

	reqf = intel_uncore_read(uncore, GEN6_RPNSWREQ);
	if (INTEL_GEN(i915) >= 9) {
	reqf >>= 23;
	} else {
	reqf &= ~GEN6_TURBO_DISABLE;
	if (IS_HASWELL(i915) \|\| IS_BROADWELL(i915))
	reqf >>= 24;
	else
	reqf >>= 25;
	}
	reqf = intel_gpu_freq(rps, reqf);

	rpmodectl = intel_uncore_read(uncore, GEN6_RP_CONTROL);
	rpinclimit = intel_uncore_read(uncore, GEN6_RP_UP_THRESHOLD);
	rpdeclimit = intel_uncore_read(uncore, GEN6_RP_DOWN_THRESHOLD);

	rpstat = intel_uncore_read(uncore, GEN6_RPSTAT1);
	rpupei = intel_uncore_read(uncore, GEN6_RP_CUR_UP_EI) & GEN6_CURICONT_MASK;
	rpcurup = intel_uncore_read(uncore, GEN6_RP_CUR_UP) & GEN6_CURBSYTAVG_MASK;
	rpprevup = intel_uncore_read(uncore, GEN6_RP_PREV_UP) & GEN6_CURBSYTAVG_MASK;
	rpdownei = intel_uncore_read(uncore, GEN6_RP_CUR_DOWN_EI) & GEN6_CURIAVG_MASK;
	rpcurdown = intel_uncore_read(uncore, GEN6_RP_CUR_DOWN) & GEN6_CURBSYTAVG_MASK;
	rpprevdown = intel_uncore_read(uncore, GEN6_RP_PREV_DOWN) & GEN6_CURBSYTAVG_MASK;
	cagf = intel_rps_read_actual_frequency(rps);

	intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);

	if (INTEL_GEN(i915) >= 11) {
	pm_ier = intel_uncore_read(uncore, GEN11_GPM_WGBOXPERF_INTR_ENABLE);
	pm_imr = intel_uncore_read(uncore, GEN11_GPM_WGBOXPERF_INTR_MASK);
	/*
	* The equivalent to the PM ISR & IIR cannot be read
	* without affecting the current state of the system
	*/
	pm_isr = 0;
	pm_iir = 0;
	} else if (INTEL_GEN(i915) >= 8) {
	pm_ier = intel_uncore_read(uncore, GEN8_GT_IER(2));
	pm_imr = intel_uncore_read(uncore, GEN8_GT_IMR(2));
	pm_isr = intel_uncore_read(uncore, GEN8_GT_ISR(2));
	pm_iir = intel_uncore_read(uncore, GEN8_GT_IIR(2));
	} else {
	pm_ier = intel_uncore_read(uncore, GEN6_PMIER);
	pm_imr = intel_uncore_read(uncore, GEN6_PMIMR);
	pm_isr = intel_uncore_read(uncore, GEN6_PMISR);
	pm_iir = intel_uncore_read(uncore, GEN6_PMIIR);
	}
	pm_mask = intel_uncore_read(uncore, GEN6_PMINTRMSK);

	seq_printf(m, "Video Turbo Mode: %s\n",
	yesno(rpmodectl & GEN6_RP_MEDIA_TURBO));
	seq_printf(m, "HW control enabled: %s\n",
	yesno(rpmodectl & GEN6_RP_ENABLE));
	seq_printf(m, "SW control enabled: %s\n",
	yesno((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) ==
	GEN6_RP_MEDIA_SW_MODE));

	seq_printf(m, "PM IER=0x%08x IMR=0x%08x, MASK=0x%08x\n",
	pm_ier, pm_imr, pm_mask);
	if (INTEL_GEN(i915) <= 10)
	seq_printf(m, "PM ISR=0x%08x IIR=0x%08x\n",
	pm_isr, pm_iir);
	seq_printf(m, "pm_intrmsk_mbz: 0x%08x\n",
	rps->pm_intrmsk_mbz);
	seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
	seq_printf(m, "Render p-state ratio: %d\n",
	(gt_perf_status & (INTEL_GEN(i915) >= 9 ? 0x1ff00 : 0xff00)) >> 8);
	seq_printf(m, "Render p-state VID: %d\n",
	gt_perf_status & 0xff);
	seq_printf(m, "Render p-state limit: %d\n",
	rp_state_limits & 0xff);
	seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
	seq_printf(m, "RPMODECTL: 0x%08x\n", rpmodectl);
	seq_printf(m, "RPINCLIMIT: 0x%08x\n", rpinclimit);
	seq_printf(m, "RPDECLIMIT: 0x%08x\n", rpdeclimit);
	seq_printf(m, "RPNSWREQ: %dMHz\n", reqf);
	seq_printf(m, "CAGF: %dMHz\n", cagf);
	seq_printf(m, "RP CUR UP EI: %d (%dus)\n",
	rpupei, GT_PM_INTERVAL_TO_US(i915, rpupei));
	seq_printf(m, "RP CUR UP: %d (%dus)\n",
	rpcurup, GT_PM_INTERVAL_TO_US(i915, rpcurup));
	seq_printf(m, "RP PREV UP: %d (%dus)\n",
	rpprevup, GT_PM_INTERVAL_TO_US(i915, rpprevup));
	seq_printf(m, "Up threshold: %d%%\n",
	rps->power.up_threshold);

	seq_printf(m, "RP CUR DOWN EI: %d (%dus)\n",
	rpdownei, GT_PM_INTERVAL_TO_US(i915, rpdownei));
	seq_printf(m, "RP CUR DOWN: %d (%dus)\n",
	rpcurdown, GT_PM_INTERVAL_TO_US(i915, rpcurdown));
	seq_printf(m, "RP PREV DOWN: %d (%dus)\n",
	rpprevdown, GT_PM_INTERVAL_TO_US(i915, rpprevdown));
	seq_printf(m, "Down threshold: %d%%\n",
	rps->power.down_threshold);

	max_freq = (IS_GEN9_LP(i915) ? rp_state_cap >> 0 :
	rp_state_cap >> 16) & 0xff;
	max_freq *= (IS_GEN9_BC(i915) \|\|
	INTEL_GEN(i915) >= 10 ? GEN9_FREQ_SCALER : 1);
	seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
	intel_gpu_freq(rps, max_freq));

	max_freq = (rp_state_cap & 0xff00) >> 8;
	max_freq *= (IS_GEN9_BC(i915) \|\|
	INTEL_GEN(i915) >= 10 ? GEN9_FREQ_SCALER : 1);
	seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
	intel_gpu_freq(rps, max_freq));

	max_freq = (IS_GEN9_LP(i915) ? rp_state_cap >> 16 :
	rp_state_cap >> 0) & 0xff;
	max_freq *= (IS_GEN9_BC(i915) \|\|
	INTEL_GEN(i915) >= 10 ? GEN9_FREQ_SCALER : 1);
	seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
	intel_gpu_freq(rps, max_freq));
	seq_printf(m, "Max overclocked frequency: %dMHz\n",
	intel_gpu_freq(rps, rps->max_freq));

	seq_printf(m, "Current freq: %d MHz\n",
	intel_gpu_freq(rps, rps->cur_freq));
	seq_printf(m, "Actual freq: %d MHz\n", cagf);
	seq_printf(m, "Idle freq: %d MHz\n",
	intel_gpu_freq(rps, rps->idle_freq));
	seq_printf(m, "Min freq: %d MHz\n",
	intel_gpu_freq(rps, rps->min_freq));
	seq_printf(m, "Boost freq: %d MHz\n",
	intel_gpu_freq(rps, rps->boost_freq));
	seq_printf(m, "Max freq: %d MHz\n",
	intel_gpu_freq(rps, rps->max_freq));
	seq_printf(m,
	"efficient (RPe) frequency: %d MHz\n",
	intel_gpu_freq(rps, rps->efficient_freq));
	} else {
	seq_puts(m, "no P-state info available\n");
	}

	seq_printf(m, "Current CD clock frequency: %d kHz\n", i915->cdclk.hw.cdclk);
	seq_printf(m, "Max CD clock frequency: %d kHz\n", i915->max_cdclk_freq);
	seq_printf(m, "Max pixel clock frequency: %d kHz\n", i915->max_dotclk_freq);

	intel_runtime_pm_put(uncore->rpm, wakeref);

	return 0;
	}
	DEFINE_GT_DEBUGFS_ATTRIBUTE(frequency);

	static int llc_show(struct seq_file m, void data)
	{
	struct intel_gt *gt = m->private;
	struct drm_i915_private *i915 = gt->i915;
	const bool edram = INTEL_GEN(i915) > 8;
	struct intel_rps *rps = &gt->rps;
	unsigned int max_gpu_freq, min_gpu_freq;
	intel_wakeref_t wakeref;
	int gpu_freq, ia_freq;

	seq_printf(m, "LLC: %s\n", yesno(HAS_LLC(i915)));
	seq_printf(m, "%s: %uMB\n", edram ? "eDRAM" : "eLLC",
	i915->edram_size_mb);

	min_gpu_freq = rps->min_freq;
	max_gpu_freq = rps->max_freq;
	if (IS_GEN9_BC(i915) \|\| INTEL_GEN(i915) >= 10) {
	/* Convert GT frequency to 50 HZ units */
	min_gpu_freq /= GEN9_FREQ_SCALER;
	max_gpu_freq /= GEN9_FREQ_SCALER;
	}

	seq_puts(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring freq (MHz)\n");

	wakeref = intel_runtime_pm_get(gt->uncore->rpm);
	for (gpu_freq = min_gpu_freq; gpu_freq <= max_gpu_freq; gpu_freq++) {
	ia_freq = gpu_freq;
	sandybridge_pcode_read(i915,
	GEN6_PCODE_READ_MIN_FREQ_TABLE,
	&ia_freq, NULL);
	seq_printf(m, "%d\t\t%d\t\t\t\t%d\n",
	intel_gpu_freq(rps,
	(gpu_freq *
	(IS_GEN9_BC(i915) \|\|
	INTEL_GEN(i915) >= 10 ?
	GEN9_FREQ_SCALER : 1))),
	((ia_freq >> 0) & 0xff) * 100,
	((ia_freq >> 8) & 0xff) * 100);
	}
	intel_runtime_pm_put(gt->uncore->rpm, wakeref);

	return 0;
	}

	static bool llc_eval(const struct intel_gt *gt)
	{
	return HAS_LLC(gt->i915);
	}

	DEFINE_GT_DEBUGFS_ATTRIBUTE(llc);

	static const char *rps_power_to_str(unsigned int power)
	{
	static const char * const strings[] = {
	[LOW_POWER] = "low power",
	[BETWEEN] = "mixed",
	[HIGH_POWER] = "high power",
	};

	if (power >= ARRAY_SIZE(strings) \|\| !strings[power])
	return "unknown";

	return strings[power];
	}

	static int rps_boost_show(struct seq_file m, void data)
	{
	struct intel_gt *gt = m->private;
	struct drm_i915_private *i915 = gt->i915;
	struct intel_rps *rps = &gt->rps;

	seq_printf(m, "RPS enabled? %d\n", rps->enabled);
	seq_printf(m, "GPU busy? %s\n", yesno(gt->awake));
	seq_printf(m, "Boosts outstanding? %d\n",
	atomic_read(&rps->num_waiters));
	seq_printf(m, "Interactive? %d\n", READ_ONCE(rps->power.interactive));
	seq_printf(m, "Frequency requested %d, actual %d\n",
	intel_gpu_freq(rps, rps->cur_freq),
	intel_rps_read_actual_frequency(rps));
	seq_printf(m, " min hard:%d, soft:%d; max soft:%d, hard:%d\n",
	intel_gpu_freq(rps, rps->min_freq),
	intel_gpu_freq(rps, rps->min_freq_softlimit),
	intel_gpu_freq(rps, rps->max_freq_softlimit),
	intel_gpu_freq(rps, rps->max_freq));
	seq_printf(m, " idle:%d, efficient:%d, boost:%d\n",
	intel_gpu_freq(rps, rps->idle_freq),
	intel_gpu_freq(rps, rps->efficient_freq),
	intel_gpu_freq(rps, rps->boost_freq));

	seq_printf(m, "Wait boosts: %d\n", atomic_read(&rps->boosts));

	if (INTEL_GEN(i915) >= 6 && rps->enabled && gt->awake) {
	struct intel_uncore *uncore = gt->uncore;
	u32 rpup, rpupei;
	u32 rpdown, rpdownei;

	intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
	rpup = intel_uncore_read_fw(uncore, GEN6_RP_CUR_UP) & GEN6_RP_EI_MASK;
	rpupei = intel_uncore_read_fw(uncore, GEN6_RP_CUR_UP_EI) & GEN6_RP_EI_MASK;
	rpdown = intel_uncore_read_fw(uncore, GEN6_RP_CUR_DOWN) & GEN6_RP_EI_MASK;
	rpdownei = intel_uncore_read_fw(uncore, GEN6_RP_CUR_DOWN_EI) & GEN6_RP_EI_MASK;
	intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);

	seq_printf(m, "\nRPS Autotuning (current \"%s\" window):\n",
	rps_power_to_str(rps->power.mode));
	seq_printf(m, " Avg. up: %d%% [above threshold? %d%%]\n",
	rpup && rpupei ? 100 * rpup / rpupei : 0,
	rps->power.up_threshold);
	seq_printf(m, " Avg. down: %d%% [below threshold? %d%%]\n",
	rpdown && rpdownei ? 100 * rpdown / rpdownei : 0,
	rps->power.down_threshold);
	} else {
	seq_puts(m, "\nRPS Autotuning inactive\n");
	}

	return 0;
	}

	static bool rps_eval(const struct intel_gt *gt)
	{
	return HAS_RPS(gt->i915);
	}

	DEFINE_GT_DEBUGFS_ATTRIBUTE(rps_boost);

	void debugfs_gt_pm_register(struct intel_gt gt, struct dentry root)
	{
	static const struct debugfs_gt_file files[] = {
	{ "drpc", &drpc_fops, NULL },
	{ "frequency", &frequency_fops, NULL },
	{ "forcewake", &fw_domains_fops, NULL },
	{ "llc", &llc_fops, llc_eval },
	{ "rps_boost", &rps_boost_fops, rps_eval },
	};

	debugfs_gt_register_files(gt, root, files, ARRAY_SIZE(files));
	}