[Intel-gfx] [PATCH v3 1/2] drm/i915: Add a wrapper for frequency debugfs
Jani Nikula
jani.nikula at linux.intel.com
Wed Oct 5 17:34:08 UTC 2022
On Wed, 05 Oct 2022, Vinay Belgaumkar <vinay.belgaumkar at intel.com> wrote:
> Move it to the RPS source file.
>
> v2: Separate out code movement and functional changes (Jani)
>
> Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar at intel.com>
Reviewed-by: Jani Nikula <jani.nikula at intel.com>
> ---
> drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c | 157 +----------------
> drivers/gpu/drm/i915/gt/intel_rps.c | 163 ++++++++++++++++++
> drivers/gpu/drm/i915/gt/intel_rps.h | 3 +
> 3 files changed, 167 insertions(+), 156 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
> index 10f680dbd7b6..40d0a3be42ac 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
> +++ b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c
> @@ -344,162 +344,7 @@ void intel_gt_pm_frequency_dump(struct intel_gt *gt, struct drm_printer *p)
> drm_printf(p, "efficient (RPe) frequency: %d MHz\n",
> intel_gpu_freq(rps, rps->efficient_freq));
> } else if (GRAPHICS_VER(i915) >= 6) {
> - u32 rp_state_limits;
> - u32 gt_perf_status;
> - struct intel_rps_freq_caps caps;
> - u32 rpmodectl, rpinclimit, rpdeclimit;
> - u32 rpstat, cagf, reqf;
> - u32 rpcurupei, rpcurup, rpprevup;
> - u32 rpcurdownei, rpcurdown, rpprevdown;
> - u32 rpupei, rpupt, rpdownei, rpdownt;
> - u32 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask;
> -
> - rp_state_limits = intel_uncore_read(uncore, GEN6_RP_STATE_LIMITS);
> - gen6_rps_get_freq_caps(rps, &caps);
> - if (IS_GEN9_LP(i915))
> - gt_perf_status = intel_uncore_read(uncore, BXT_GT_PERF_STATUS);
> - else
> - 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 (GRAPHICS_VER(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);
> - rpcurupei = 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;
> - rpcurdownei = 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;
> -
> - rpupei = intel_uncore_read(uncore, GEN6_RP_UP_EI);
> - rpupt = intel_uncore_read(uncore, GEN6_RP_UP_THRESHOLD);
> -
> - rpdownei = intel_uncore_read(uncore, GEN6_RP_DOWN_EI);
> - rpdownt = intel_uncore_read(uncore, GEN6_RP_DOWN_THRESHOLD);
> -
> - cagf = intel_rps_read_actual_frequency(rps);
> -
> - intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
> -
> - if (GRAPHICS_VER(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 (GRAPHICS_VER(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);
> -
> - drm_printf(p, "Video Turbo Mode: %s\n",
> - str_yes_no(rpmodectl & GEN6_RP_MEDIA_TURBO));
> - drm_printf(p, "HW control enabled: %s\n",
> - str_yes_no(rpmodectl & GEN6_RP_ENABLE));
> - drm_printf(p, "SW control enabled: %s\n",
> - str_yes_no((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) == GEN6_RP_MEDIA_SW_MODE));
> -
> - drm_printf(p, "PM IER=0x%08x IMR=0x%08x, MASK=0x%08x\n",
> - pm_ier, pm_imr, pm_mask);
> - if (GRAPHICS_VER(i915) <= 10)
> - drm_printf(p, "PM ISR=0x%08x IIR=0x%08x\n",
> - pm_isr, pm_iir);
> - drm_printf(p, "pm_intrmsk_mbz: 0x%08x\n",
> - rps->pm_intrmsk_mbz);
> - drm_printf(p, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
> - drm_printf(p, "Render p-state ratio: %d\n",
> - (gt_perf_status & (GRAPHICS_VER(i915) >= 9 ? 0x1ff00 : 0xff00)) >> 8);
> - drm_printf(p, "Render p-state VID: %d\n",
> - gt_perf_status & 0xff);
> - drm_printf(p, "Render p-state limit: %d\n",
> - rp_state_limits & 0xff);
> - drm_printf(p, "RPSTAT1: 0x%08x\n", rpstat);
> - drm_printf(p, "RPMODECTL: 0x%08x\n", rpmodectl);
> - drm_printf(p, "RPINCLIMIT: 0x%08x\n", rpinclimit);
> - drm_printf(p, "RPDECLIMIT: 0x%08x\n", rpdeclimit);
> - drm_printf(p, "RPNSWREQ: %dMHz\n", reqf);
> - drm_printf(p, "CAGF: %dMHz\n", cagf);
> - drm_printf(p, "RP CUR UP EI: %d (%lldns)\n",
> - rpcurupei,
> - intel_gt_pm_interval_to_ns(gt, rpcurupei));
> - drm_printf(p, "RP CUR UP: %d (%lldns)\n",
> - rpcurup, intel_gt_pm_interval_to_ns(gt, rpcurup));
> - drm_printf(p, "RP PREV UP: %d (%lldns)\n",
> - rpprevup, intel_gt_pm_interval_to_ns(gt, rpprevup));
> - drm_printf(p, "Up threshold: %d%%\n",
> - rps->power.up_threshold);
> - drm_printf(p, "RP UP EI: %d (%lldns)\n",
> - rpupei, intel_gt_pm_interval_to_ns(gt, rpupei));
> - drm_printf(p, "RP UP THRESHOLD: %d (%lldns)\n",
> - rpupt, intel_gt_pm_interval_to_ns(gt, rpupt));
> -
> - drm_printf(p, "RP CUR DOWN EI: %d (%lldns)\n",
> - rpcurdownei,
> - intel_gt_pm_interval_to_ns(gt, rpcurdownei));
> - drm_printf(p, "RP CUR DOWN: %d (%lldns)\n",
> - rpcurdown,
> - intel_gt_pm_interval_to_ns(gt, rpcurdown));
> - drm_printf(p, "RP PREV DOWN: %d (%lldns)\n",
> - rpprevdown,
> - intel_gt_pm_interval_to_ns(gt, rpprevdown));
> - drm_printf(p, "Down threshold: %d%%\n",
> - rps->power.down_threshold);
> - drm_printf(p, "RP DOWN EI: %d (%lldns)\n",
> - rpdownei, intel_gt_pm_interval_to_ns(gt, rpdownei));
> - drm_printf(p, "RP DOWN THRESHOLD: %d (%lldns)\n",
> - rpdownt, intel_gt_pm_interval_to_ns(gt, rpdownt));
> -
> - drm_printf(p, "Lowest (RPN) frequency: %dMHz\n",
> - intel_gpu_freq(rps, caps.min_freq));
> - drm_printf(p, "Nominal (RP1) frequency: %dMHz\n",
> - intel_gpu_freq(rps, caps.rp1_freq));
> - drm_printf(p, "Max non-overclocked (RP0) frequency: %dMHz\n",
> - intel_gpu_freq(rps, caps.rp0_freq));
> - drm_printf(p, "Max overclocked frequency: %dMHz\n",
> - intel_gpu_freq(rps, rps->max_freq));
> -
> - drm_printf(p, "Current freq: %d MHz\n",
> - intel_gpu_freq(rps, rps->cur_freq));
> - drm_printf(p, "Actual freq: %d MHz\n", cagf);
> - drm_printf(p, "Idle freq: %d MHz\n",
> - intel_gpu_freq(rps, rps->idle_freq));
> - drm_printf(p, "Min freq: %d MHz\n",
> - intel_gpu_freq(rps, rps->min_freq));
> - drm_printf(p, "Boost freq: %d MHz\n",
> - intel_gpu_freq(rps, rps->boost_freq));
> - drm_printf(p, "Max freq: %d MHz\n",
> - intel_gpu_freq(rps, rps->max_freq));
> - drm_printf(p,
> - "efficient (RPe) frequency: %d MHz\n",
> - intel_gpu_freq(rps, rps->efficient_freq));
> + gen6_rps_frequency_dump(rps, p);
> } else {
> drm_puts(p, "no P-state info available\n");
> }
> diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
> index 17b40b625e31..737db780db00 100644
> --- a/drivers/gpu/drm/i915/gt/intel_rps.c
> +++ b/drivers/gpu/drm/i915/gt/intel_rps.c
> @@ -2219,6 +2219,169 @@ u32 intel_rps_get_rpn_frequency(struct intel_rps *rps)
> return intel_gpu_freq(rps, rps->min_freq);
> }
>
> +void gen6_rps_frequency_dump(struct intel_rps *rps, struct drm_printer *p)
> +{
> + struct intel_gt *gt = rps_to_gt(rps);
> + struct drm_i915_private *i915 = gt->i915;
> + struct intel_uncore *uncore = gt->uncore;
> + struct intel_rps_freq_caps caps;
> + u32 rp_state_limits;
> + u32 gt_perf_status;
> + u32 rpmodectl, rpinclimit, rpdeclimit;
> + u32 rpstat, cagf, reqf;
> + u32 rpcurupei, rpcurup, rpprevup;
> + u32 rpcurdownei, rpcurdown, rpprevdown;
> + u32 rpupei, rpupt, rpdownei, rpdownt;
> + u32 pm_ier, pm_imr, pm_isr, pm_iir, pm_mask;
> +
> + rp_state_limits = intel_uncore_read(uncore, GEN6_RP_STATE_LIMITS);
> + gen6_rps_get_freq_caps(rps, &caps);
> + if (IS_GEN9_LP(i915))
> + gt_perf_status = intel_uncore_read(uncore, BXT_GT_PERF_STATUS);
> + else
> + 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 (GRAPHICS_VER(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);
> + rpcurupei = 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;
> + rpcurdownei = 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;
> +
> + rpupei = intel_uncore_read(uncore, GEN6_RP_UP_EI);
> + rpupt = intel_uncore_read(uncore, GEN6_RP_UP_THRESHOLD);
> +
> + rpdownei = intel_uncore_read(uncore, GEN6_RP_DOWN_EI);
> + rpdownt = intel_uncore_read(uncore, GEN6_RP_DOWN_THRESHOLD);
> +
> + cagf = intel_rps_read_actual_frequency(rps);
> +
> + intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
> +
> + if (GRAPHICS_VER(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 (GRAPHICS_VER(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);
> +
> + drm_printf(p, "Video Turbo Mode: %s\n",
> + str_yes_no(rpmodectl & GEN6_RP_MEDIA_TURBO));
> + drm_printf(p, "HW control enabled: %s\n",
> + str_yes_no(rpmodectl & GEN6_RP_ENABLE));
> + drm_printf(p, "SW control enabled: %s\n",
> + str_yes_no((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) == GEN6_RP_MEDIA_SW_MODE));
> +
> + drm_printf(p, "PM IER=0x%08x IMR=0x%08x, MASK=0x%08x\n",
> + pm_ier, pm_imr, pm_mask);
> + if (GRAPHICS_VER(i915) <= 10)
> + drm_printf(p, "PM ISR=0x%08x IIR=0x%08x\n",
> + pm_isr, pm_iir);
> + drm_printf(p, "pm_intrmsk_mbz: 0x%08x\n",
> + rps->pm_intrmsk_mbz);
> + drm_printf(p, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
> + drm_printf(p, "Render p-state ratio: %d\n",
> + (gt_perf_status & (GRAPHICS_VER(i915) >= 9 ? 0x1ff00 : 0xff00)) >> 8);
> + drm_printf(p, "Render p-state VID: %d\n",
> + gt_perf_status & 0xff);
> + drm_printf(p, "Render p-state limit: %d\n",
> + rp_state_limits & 0xff);
> + drm_printf(p, "RPSTAT1: 0x%08x\n", rpstat);
> + drm_printf(p, "RPMODECTL: 0x%08x\n", rpmodectl);
> + drm_printf(p, "RPINCLIMIT: 0x%08x\n", rpinclimit);
> + drm_printf(p, "RPDECLIMIT: 0x%08x\n", rpdeclimit);
> + drm_printf(p, "RPNSWREQ: %dMHz\n", reqf);
> + drm_printf(p, "CAGF: %dMHz\n", cagf);
> + drm_printf(p, "RP CUR UP EI: %d (%lldns)\n",
> + rpcurupei,
> + intel_gt_pm_interval_to_ns(gt, rpcurupei));
> + drm_printf(p, "RP CUR UP: %d (%lldns)\n",
> + rpcurup, intel_gt_pm_interval_to_ns(gt, rpcurup));
> + drm_printf(p, "RP PREV UP: %d (%lldns)\n",
> + rpprevup, intel_gt_pm_interval_to_ns(gt, rpprevup));
> + drm_printf(p, "Up threshold: %d%%\n",
> + rps->power.up_threshold);
> + drm_printf(p, "RP UP EI: %d (%lldns)\n",
> + rpupei, intel_gt_pm_interval_to_ns(gt, rpupei));
> + drm_printf(p, "RP UP THRESHOLD: %d (%lldns)\n",
> + rpupt, intel_gt_pm_interval_to_ns(gt, rpupt));
> +
> + drm_printf(p, "RP CUR DOWN EI: %d (%lldns)\n",
> + rpcurdownei,
> + intel_gt_pm_interval_to_ns(gt, rpcurdownei));
> + drm_printf(p, "RP CUR DOWN: %d (%lldns)\n",
> + rpcurdown,
> + intel_gt_pm_interval_to_ns(gt, rpcurdown));
> + drm_printf(p, "RP PREV DOWN: %d (%lldns)\n",
> + rpprevdown,
> + intel_gt_pm_interval_to_ns(gt, rpprevdown));
> + drm_printf(p, "Down threshold: %d%%\n",
> + rps->power.down_threshold);
> + drm_printf(p, "RP DOWN EI: %d (%lldns)\n",
> + rpdownei, intel_gt_pm_interval_to_ns(gt, rpdownei));
> + drm_printf(p, "RP DOWN THRESHOLD: %d (%lldns)\n",
> + rpdownt, intel_gt_pm_interval_to_ns(gt, rpdownt));
> +
> + drm_printf(p, "Lowest (RPN) frequency: %dMHz\n",
> + intel_gpu_freq(rps, caps.min_freq));
> + drm_printf(p, "Nominal (RP1) frequency: %dMHz\n",
> + intel_gpu_freq(rps, caps.rp1_freq));
> + drm_printf(p, "Max non-overclocked (RP0) frequency: %dMHz\n",
> + intel_gpu_freq(rps, caps.rp0_freq));
> + drm_printf(p, "Max overclocked frequency: %dMHz\n",
> + intel_gpu_freq(rps, rps->max_freq));
> +
> + drm_printf(p, "Current freq: %d MHz\n",
> + intel_gpu_freq(rps, rps->cur_freq));
> + drm_printf(p, "Actual freq: %d MHz\n", cagf);
> + drm_printf(p, "Idle freq: %d MHz\n",
> + intel_gpu_freq(rps, rps->idle_freq));
> + drm_printf(p, "Min freq: %d MHz\n",
> + intel_gpu_freq(rps, rps->min_freq));
> + drm_printf(p, "Boost freq: %d MHz\n",
> + intel_gpu_freq(rps, rps->boost_freq));
> + drm_printf(p, "Max freq: %d MHz\n",
> + intel_gpu_freq(rps, rps->max_freq));
> + drm_printf(p,
> + "efficient (RPe) frequency: %d MHz\n",
> + intel_gpu_freq(rps, rps->efficient_freq));
> +}
> +
> static int set_max_freq(struct intel_rps *rps, u32 val)
> {
> struct drm_i915_private *i915 = rps_to_i915(rps);
> diff --git a/drivers/gpu/drm/i915/gt/intel_rps.h b/drivers/gpu/drm/i915/gt/intel_rps.h
> index 4509dfdc52e0..110300dfd438 100644
> --- a/drivers/gpu/drm/i915/gt/intel_rps.h
> +++ b/drivers/gpu/drm/i915/gt/intel_rps.h
> @@ -10,6 +10,7 @@
> #include "i915_reg_defs.h"
>
> struct i915_request;
> +struct drm_printer;
>
> void intel_rps_init_early(struct intel_rps *rps);
> void intel_rps_init(struct intel_rps *rps);
> @@ -54,6 +55,8 @@ void intel_rps_lower_unslice(struct intel_rps *rps);
> u32 intel_rps_read_throttle_reason(struct intel_rps *rps);
> bool rps_read_mask_mmio(struct intel_rps *rps, i915_reg_t reg32, u32 mask);
>
> +void gen6_rps_frequency_dump(struct intel_rps *rps, struct drm_printer *p);
> +
> void gen5_rps_irq_handler(struct intel_rps *rps);
> void gen6_rps_irq_handler(struct intel_rps *rps, u32 pm_iir);
> void gen11_rps_irq_handler(struct intel_rps *rps, u32 pm_iir);
--
Jani Nikula, Intel Open Source Graphics Center
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