Re: [Intel-gfx] [PATCH v2 1/2] drm/i915: Extract GT render power state management

Andi Shyti
2019-10-23T09:52:53Z

Hi,

Sorry, I messed up with the e-mail (and with the in-reply-to, as
well, and I forgot to add a note to this v2), please take this
as 1/2 because it has the correct e-mail.

Andi

On Wed, Oct 23, 2019 at 12:50:00PM +0300, Andi Shyti wrote:
> i915_irq.c is large. One reason for this is that has a large chunk of
> the GT render power management stashed away in it. Extract that logic
> out of i915_irq.c and intel_pm.c and put it under one roof.
>
> Based on a patch by Chris Wilson.
>
> Signed-off-by: Andi Shyti <andi.shyti@intel.com>
> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> ---
> drivers/gpu/drm/i915/Makefile | 3 +-
> drivers/gpu/drm/i915/display/intel_display.c | 8 +-
> drivers/gpu/drm/i915/gt/intel_gt.c | 6 +-
> drivers/gpu/drm/i915/gt/intel_gt_irq.c | 5 +-
> drivers/gpu/drm/i915/gt/intel_gt_pm.c | 49 +-
> drivers/gpu/drm/i915/gt/intel_gt_pm.h | 1 +
> drivers/gpu/drm/i915/gt/intel_gt_types.h | 2 +
> drivers/gpu/drm/i915/gt/intel_llc.c | 2 +-
> drivers/gpu/drm/i915/gt/intel_rps.c | 1872 +++++++++++++++
> drivers/gpu/drm/i915/gt/intel_rps.h | 37 +
> drivers/gpu/drm/i915/gt/intel_rps_types.h | 93 +
> drivers/gpu/drm/i915/gt/selftest_llc.c | 7 +-
> .../gpu/drm/i915/gt/uc/intel_guc_submission.c | 4 +-
> drivers/gpu/drm/i915/i915_debugfs.c | 73 +-
> drivers/gpu/drm/i915/i915_drv.c | 2 +
> drivers/gpu/drm/i915/i915_drv.h | 96 -
> drivers/gpu/drm/i915/i915_gem.c | 3 +-
> drivers/gpu/drm/i915/i915_irq.c | 359 +--
> drivers/gpu/drm/i915/i915_irq.h | 3 -
> drivers/gpu/drm/i915/i915_pmu.c | 10 +-
> drivers/gpu/drm/i915/i915_request.c | 7 +-
> drivers/gpu/drm/i915/i915_sysfs.c | 74 +-
> drivers/gpu/drm/i915/intel_pm.c | 2105 ++---------------
> drivers/gpu/drm/i915/intel_pm.h | 22 -
> 24 files changed, 2359 insertions(+), 2484 deletions(-)
> create mode 100644 drivers/gpu/drm/i915/gt/intel_rps.c
> create mode 100644 drivers/gpu/drm/i915/gt/intel_rps.h
> create mode 100644 drivers/gpu/drm/i915/gt/intel_rps_types.h
>
> diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
> index 2fd4bed188e5..133ca59e7c48 100644
> --- a/drivers/gpu/drm/i915/Makefile
> +++ b/drivers/gpu/drm/i915/Makefile
> @@ -90,11 +90,12 @@ gt-y += \
> gt/intel_hangcheck.o \
> gt/intel_llc.o \
> gt/intel_lrc.o \
> + gt/intel_mocs.o \
> gt/intel_rc6.o \
> gt/intel_renderstate.o \
> gt/intel_reset.o \
> gt/intel_ringbuffer.o \
> - gt/intel_mocs.o \
> + gt/intel_rps.o \
> gt/intel_sseu.o \
> gt/intel_timeline.o \
> gt/intel_workarounds.o
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 236fdf122e47..49c2c7f71394 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -55,6 +55,8 @@
> #include "display/intel_tv.h"
> #include "display/intel_vdsc.h"
>
> +#include "gt/intel_rps.h"
> +
> #include "i915_drv.h"
> #include "i915_trace.h"
> #include "intel_acpi.h"
> @@ -14782,7 +14784,7 @@ static int do_rps_boost(struct wait_queue_entry *_wait,
> * vblank without our intervention, so leave RPS alone.
> */
> if (!i915_request_started(rq))
> - gen6_rps_boost(rq);
> + intel_rps_boost(rq);
> i915_request_put(rq);
>
> drm_crtc_vblank_put(wait->crtc);
> @@ -14976,7 +14978,7 @@ intel_prepare_plane_fb(struct drm_plane *plane,
> * maximum clocks following a vblank miss (see do_rps_boost()).
> */
> if (!intel_state->rps_interactive) {
> - intel_rps_mark_interactive(dev_priv, true);
> + intel_rps_mark_interactive(&dev_priv->gt.rps, true);
> intel_state->rps_interactive = true;
> }
>
> @@ -15001,7 +15003,7 @@ intel_cleanup_plane_fb(struct drm_plane *plane,
> struct drm_i915_private *dev_priv = to_i915(plane->dev);
>
> if (intel_state->rps_interactive) {
> - intel_rps_mark_interactive(dev_priv, false);
> + intel_rps_mark_interactive(&dev_priv->gt.rps, false);
> intel_state->rps_interactive = false;
> }
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
> index 1c4b6c9642ad..7518852cb78a 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gt.c
> +++ b/drivers/gpu/drm/i915/gt/intel_gt.c
> @@ -9,6 +9,7 @@
> #include "intel_gt_requests.h"
> #include "intel_mocs.h"
> #include "intel_rc6.h"
> +#include "intel_rps.h"
> #include "intel_uncore.h"
> #include "intel_pm.h"
>
> @@ -321,8 +322,7 @@ void intel_gt_chipset_flush(struct intel_gt *gt)
>
> void intel_gt_driver_register(struct intel_gt *gt)
> {
> - if (IS_GEN(gt->i915, 5))
> - intel_gpu_ips_init(gt->i915);
> + intel_rps_driver_register(&gt->rps);
> }
>
> static int intel_gt_init_scratch(struct intel_gt *gt, unsigned int size)
> @@ -385,7 +385,7 @@ void intel_gt_driver_remove(struct intel_gt *gt)
>
> void intel_gt_driver_unregister(struct intel_gt *gt)
> {
> - intel_gpu_ips_teardown();
> + intel_rps_driver_unregister(&gt->rps);
> }
>
> void intel_gt_driver_release(struct intel_gt *gt)
> diff --git a/drivers/gpu/drm/i915/gt/intel_gt_irq.c b/drivers/gpu/drm/i915/gt/intel_gt_irq.c
> index 34a4fb624bf7..973ee7eded64 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gt_irq.c
> +++ b/drivers/gpu/drm/i915/gt/intel_gt_irq.c
> @@ -11,6 +11,7 @@
> #include "intel_gt.h"
> #include "intel_gt_irq.h"
> #include "intel_uncore.h"
> +#include "intel_rps.h"
>
> static void guc_irq_handler(struct intel_guc *guc, u16 iir)
> {
> @@ -77,7 +78,7 @@ gen11_other_irq_handler(struct intel_gt *gt, const u8 instance,
> return guc_irq_handler(&gt->uc.guc, iir);
>
> if (instance == OTHER_GTPM_INSTANCE)
> - return gen11_rps_irq_handler(gt, iir);
> + return gen11_rps_irq_handler(&gt->rps, iir);
>
> WARN_ONCE(1, "unhandled other interrupt instance=0x%x, iir=0x%x\n",
> instance, iir);
> @@ -336,7 +337,7 @@ void gen8_gt_irq_handler(struct intel_gt *gt, u32 master_ctl, u32 gt_iir[4])
> }
>
> if (master_ctl & (GEN8_GT_PM_IRQ | GEN8_GT_GUC_IRQ)) {
> - gen6_rps_irq_handler(gt->i915, gt_iir[2]);
> + gen6_rps_irq_handler(&gt->rps, gt_iir[2]);
> guc_irq_handler(&gt->uc.guc, gt_iir[2] >> 16);
> }
> }
> diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
> index 06e73d56cfcf..32ca87265222 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gt_pm.c
> +++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
> @@ -12,8 +12,10 @@
> #include "intel_gt.h"
> #include "intel_gt_pm.h"
> #include "intel_gt_requests.h"
> +#include "intel_llc.h"
> #include "intel_pm.h"
> #include "intel_rc6.h"
> +#include "intel_rps.h"
> #include "intel_wakeref.h"
>
> static int __gt_unpark(struct intel_wakeref *wf)
> @@ -39,12 +41,8 @@ static int __gt_unpark(struct intel_wakeref *wf)
> gt->awake = intel_display_power_get(i915, POWER_DOMAIN_GT_IRQ);
> GEM_BUG_ON(!gt->awake);
>
> - intel_enable_gt_powersave(i915);
> -
> - i915_update_gfx_val(i915);
> - if (INTEL_GEN(i915) >= 6)
> - gen6_rps_busy(i915);
> -
> + intel_rps_unpark(&gt->rps);
> + intel_llc_enable(&gt->llc);
> i915_pmu_gt_unparked(i915);
>
> intel_gt_queue_hangcheck(gt);
> @@ -65,8 +63,8 @@ static int __gt_park(struct intel_wakeref *wf)
>
> i915_vma_parked(gt);
> i915_pmu_gt_parked(i915);
> - if (INTEL_GEN(i915) >= 6)
> - gen6_rps_idle(i915);
> + intel_llc_disable(&gt->llc);
> + intel_rps_park(&gt->rps);
>
> /* Everything switched off, flush any residual interrupt just in case */
> intel_synchronize_irq(i915);
> @@ -98,6 +96,7 @@ void intel_gt_pm_init(struct intel_gt *gt)
> * user.
> */
> intel_rc6_init(&gt->rc6);
> + intel_rps_init(&gt->rps);
> }
>
> static bool reset_engines(struct intel_gt *gt)
> @@ -141,10 +140,39 @@ void intel_gt_sanitize(struct intel_gt *gt, bool force)
> engine->reset.finish(engine);
> }
>
> +void intel_gt_pm_enable(struct intel_gt *gt)
> +{
> + struct intel_engine_cs *engine;
> + enum intel_engine_id id;
> +
> + /* Powersaving is controlled by the host when inside a VM */
> + if (intel_vgpu_active(gt->i915))
> + return;
> +
> + if (is_mock_gt(gt))
> + return;
> +
> + intel_gt_pm_get(gt);
> + intel_rps_enable(&gt->rps);
> + intel_llc_enable(&gt->llc);
> +
> + for_each_engine(engine, gt->i915, id) {
> + intel_engine_pm_get(engine);
> + engine->serial++; /* force kernel context reload */
> + intel_engine_pm_put(engine);
> + }
> +
> + intel_gt_pm_put(gt);
> +}
> +
> void intel_gt_pm_disable(struct intel_gt *gt)
> {
> - if (!is_mock_gt(gt))
> - intel_sanitize_gt_powersave(gt->i915);
> + if (is_mock_gt(gt))
> + return;
> +
> + intel_rc6_disable(&gt->rc6);
> + intel_llc_disable(&gt->llc);
> + intel_rps_disable(&gt->rps);
> }
>
> void intel_gt_pm_fini(struct intel_gt *gt)
> @@ -165,6 +193,7 @@ int intel_gt_resume(struct intel_gt *gt)
> * allowing us to fixup the user contexts on their first pin.
> */
> intel_gt_pm_get(gt);
> +
> intel_uncore_forcewake_get(gt->uncore, FORCEWAKE_ALL);
> intel_rc6_sanitize(&gt->rc6);
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.h b/drivers/gpu/drm/i915/gt/intel_gt_pm.h
> index 0ed87da4bb68..df50f853748d 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gt_pm.h
> +++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.h
> @@ -40,6 +40,7 @@ static inline int intel_gt_pm_wait_for_idle(struct intel_gt *gt)
> void intel_gt_pm_init_early(struct intel_gt *gt);
> void intel_gt_pm_init(struct intel_gt *gt);
> void intel_gt_pm_disable(struct intel_gt *gt);
> +void intel_gt_pm_enable(struct intel_gt *gt);
> void intel_gt_pm_fini(struct intel_gt *gt);
>
> void intel_gt_sanitize(struct intel_gt *gt, bool force);
> diff --git a/drivers/gpu/drm/i915/gt/intel_gt_types.h b/drivers/gpu/drm/i915/gt/intel_gt_types.h
> index 980973e66e7f..e4bd23eb8290 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gt_types.h
> +++ b/drivers/gpu/drm/i915/gt/intel_gt_types.h
> @@ -20,6 +20,7 @@
> #include "intel_llc_types.h"
> #include "intel_reset_types.h"
> #include "intel_rc6_types.h"
> +#include "intel_rps_types.h"
> #include "intel_wakeref.h"
>
> struct drm_i915_private;
> @@ -82,6 +83,7 @@ struct intel_gt {
>
> struct intel_llc llc;
> struct intel_rc6 rc6;
> + struct intel_rps rps;
>
> ktime_t last_init_time;
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_llc.c b/drivers/gpu/drm/i915/gt/intel_llc.c
> index 35093eb5f24e..ceb785b75c25 100644
> --- a/drivers/gpu/drm/i915/gt/intel_llc.c
> +++ b/drivers/gpu/drm/i915/gt/intel_llc.c
> @@ -48,7 +48,7 @@ static bool get_ia_constants(struct intel_llc *llc,
> struct ia_constants *consts)
> {
> struct drm_i915_private *i915 = llc_to_gt(llc)->i915;
> - struct intel_rps *rps = &i915->gt_pm.rps;
> + struct intel_rps *rps = &llc_to_gt(llc)->rps;
>
> if (rps->max_freq <= rps->min_freq)
> return false;
> diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
> new file mode 100644
> index 000000000000..30f56c786468
> --- /dev/null
> +++ b/drivers/gpu/drm/i915/gt/intel_rps.c
> @@ -0,0 +1,1872 @@
> +/*
> + * SPDX-License-Identifier: MIT
> + *
> + * Copyright © 2019 Intel Corporation
> + */
> +
> +#include "i915_drv.h"
> +#include "intel_gt.h"
> +#include "intel_gt_irq.h"
> +#include "intel_gt_pm_irq.h"
> +#include "intel_rps.h"
> +#include "intel_sideband.h"
> +#include "../../../platform/x86/intel_ips.h"
> +
> +/*
> + * Lock protecting IPS related data structures
> + */
> +static DEFINE_SPINLOCK(mchdev_lock);
> +
> +static struct intel_gt *rps_to_gt(struct intel_rps *rps)
> +{
> + return container_of(rps, struct intel_gt, rps);
> +}
> +
> +static struct drm_i915_private *rps_to_i915(struct intel_rps *rps)
> +{
> + return rps_to_gt(rps)->i915;
> +}
> +
> +static struct intel_uncore *rps_to_uncore(struct intel_rps *rps)
> +{
> + return rps_to_gt(rps)->uncore;
> +}
> +
> +static u32 rps_pm_sanitize_mask(struct intel_rps *rps, u32 mask)
> +{
> + return mask & ~rps->pm_intrmsk_mbz;
> +}
> +
> +static u32 rps_pm_mask(struct intel_rps *rps, u8 val)
> +{
> + u32 mask = 0;
> +
> + /* We use UP_EI_EXPIRED interrupts for both up/down in manual mode */
> + if (val > rps->min_freq_softlimit)
> + mask |= (GEN6_PM_RP_UP_EI_EXPIRED |
> + GEN6_PM_RP_DOWN_THRESHOLD |
> + GEN6_PM_RP_DOWN_TIMEOUT);
> +
> + if (val < rps->max_freq_softlimit)
> + mask |= GEN6_PM_RP_UP_EI_EXPIRED | GEN6_PM_RP_UP_THRESHOLD;
> +
> + mask &= rps->pm_events;
> +
> + return rps_pm_sanitize_mask(rps, ~mask);
> +}
> +
> +static void rps_reset_ei(struct intel_rps *rps)
> +{
> + memset(&rps->ei, 0, sizeof(rps->ei));
> +}
> +
> +static void rps_enable_interrupts(struct intel_rps *rps)
> +{
> + struct intel_gt *gt = rps_to_gt(rps);
> +
> + rps_reset_ei(rps);
> +
> + if (IS_VALLEYVIEW(gt->i915))
> + /* WaGsvRC0ResidencyMethod:vlv */
> + rps->pm_events = GEN6_PM_RP_UP_EI_EXPIRED;
> + else
> + rps->pm_events = (GEN6_PM_RP_UP_THRESHOLD |
> + GEN6_PM_RP_DOWN_THRESHOLD |
> + GEN6_PM_RP_DOWN_TIMEOUT);
> +
> + spin_lock_irq(&gt->irq_lock);
> + gen6_gt_pm_enable_irq(gt, rps->pm_events);
> + spin_unlock_irq(&gt->irq_lock);
> +
> + intel_uncore_write(gt->uncore, GEN6_PMINTRMSK,
> + rps_pm_mask(rps, rps->cur_freq));
> +}
> +
> +static void gen6_rps_reset_interrupts(struct intel_rps *rps)
> +{
> + gen6_gt_pm_reset_iir(rps_to_gt(rps), GEN6_PM_RPS_EVENTS);
> +}
> +
> +static void gen11_rps_reset_interrupts(struct intel_rps *rps)
> +{
> + while (gen11_gt_reset_one_iir(rps_to_gt(rps), 0, GEN11_GTPM))
> + ;
> +}
> +
> +static void rps_reset_interrupts(struct intel_rps *rps)
> +{
> + struct intel_gt *gt = rps_to_gt(rps);
> +
> + spin_lock_irq(&gt->irq_lock);
> + if (INTEL_GEN(gt->i915) >= 11)
> + gen11_rps_reset_interrupts(rps);
> + else
> + gen6_rps_reset_interrupts(rps);
> +
> + rps->pm_iir = 0;
> + spin_unlock_irq(&gt->irq_lock);
> +}
> +
> +static void rps_disable_interrupts(struct intel_rps *rps)
> +{
> + struct intel_gt *gt = rps_to_gt(rps);
> +
> + rps->pm_events = 0;
> +
> + intel_uncore_write(gt->uncore, GEN6_PMINTRMSK,
> + rps_pm_sanitize_mask(rps, ~0u));
> +
> + spin_lock_irq(&gt->irq_lock);
> + gen6_gt_pm_disable_irq(gt, GEN6_PM_RPS_EVENTS);
> + spin_unlock_irq(&gt->irq_lock);
> +
> + intel_synchronize_irq(gt->i915);
> +
> + /*
> + * Now that we will not be generating any more work, flush any
> + * outstanding tasks. As we are called on the RPS idle path,
> + * we will reset the GPU to minimum frequencies, so the current
> + * state of the worker can be discarded.
> + */
> + cancel_work_sync(&rps->work);
> +
> + rps_reset_interrupts(rps);
> +}
> +
> +static const struct cparams {
> + u16 i;
> + u16 t;
> + u16 m;
> + u16 c;
> +} cparams[] = {
> + { 1, 1333, 301, 28664 },
> + { 1, 1066, 294, 24460 },
> + { 1, 800, 294, 25192 },
> + { 0, 1333, 276, 27605 },
> + { 0, 1066, 276, 27605 },
> + { 0, 800, 231, 23784 },
> +};
> +
> +static void gen5_rps_init(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> + u8 fmax, fmin, fstart;
> + u32 rgvmodectl;
> + int c_m, i;
> +
> + if (i915->fsb_freq <= 3200)
> + c_m = 0;
> + else if (i915->fsb_freq <= 4800)
> + c_m = 1;
> + else
> + c_m = 2;
> +
> + for (i = 0; i < ARRAY_SIZE(cparams); i++) {
> + if (cparams[i].i == c_m && cparams[i].t == i915->mem_freq) {
> + rps->ips.m = cparams[i].m;
> + rps->ips.c = cparams[i].c;
> + break;
> + }
> + }
> +
> + rgvmodectl = intel_uncore_read(uncore, MEMMODECTL);
> +
> + /* Set up min, max, and cur for interrupt handling */
> + fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT;
> + fmin = (rgvmodectl & MEMMODE_FMIN_MASK);
> + fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >>
> + MEMMODE_FSTART_SHIFT;
> + DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n",
> + fmax, fmin, fstart);
> +
> + rps->min_freq = -fstart;
> + rps->max_freq = -fmin;
> +
> + rps->idle_freq = rps->min_freq;
> + rps->cur_freq = rps->idle_freq;
> +}
> +
> +static unsigned long
> +__ips_chipset_val(struct intel_ips *ips)
> +{
> + struct intel_uncore *uncore =
> + rps_to_uncore(container_of(ips, struct intel_rps, ips));
> + unsigned long now = jiffies_to_msecs(jiffies), dt;
> + unsigned long result;
> + u64 total, delta;
> +
> + lockdep_assert_held(&mchdev_lock);
> +
> + /*
> + * Prevent division-by-zero if we are asking too fast.
> + * Also, we don't get interesting results if we are polling
> + * faster than once in 10ms, so just return the saved value
> + * in such cases.
> + */
> + dt = now - ips->last_time1;
> + if (dt <= 10)
> + return ips->chipset_power;
> +
> + /* FIXME: handle per-counter overflow */
> + total = intel_uncore_read(uncore, DMIEC);
> + total += intel_uncore_read(uncore, DDREC);
> + total += intel_uncore_read(uncore, CSIEC);
> +
> + delta = total - ips->last_count1;
> +
> + result = div_u64(div_u64(ips->m * delta, dt) + ips->c, 10);
> +
> + ips->last_count1 = total;
> + ips->last_time1 = now;
> +
> + ips->chipset_power = result;
> +
> + return result;
> +}
> +
> +static unsigned long ips_mch_val(struct intel_uncore *uncore)
> +{
> + unsigned int m, x, b;
> + u32 tsfs;
> +
> + tsfs = intel_uncore_read(uncore, TSFS);
> + x = intel_uncore_read8(uncore, TR1);
> +
> + b = tsfs & TSFS_INTR_MASK;
> + m = (tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT;
> +
> + return m * x / 127 - b;
> +}
> +
> +static int _pxvid_to_vd(u8 pxvid)
> +{
> + if (pxvid == 0)
> + return 0;
> +
> + if (pxvid >= 8 && pxvid < 31)
> + pxvid = 31;
> +
> + return (pxvid + 2) * 125;
> +}
> +
> +static u32 pvid_to_extvid(struct drm_i915_private *i915, u8 pxvid)
> +{
> + const int vd = _pxvid_to_vd(pxvid);
> +
> + if (INTEL_INFO(i915)->is_mobile)
> + return max(vd - 1125, 0);
> +
> + return vd;
> +}
> +
> +static void __gen5_ips_update(struct intel_ips *ips)
> +{
> + struct intel_uncore *uncore =
> + rps_to_uncore(container_of(ips, struct intel_rps, ips));
> + u64 now, delta, dt;
> + u32 count;
> +
> + lockdep_assert_held(&mchdev_lock);
> +
> + now = ktime_get_raw_ns();
> + dt = now - ips->last_time2;
> + do_div(dt, NSEC_PER_MSEC);
> +
> + /* Don't divide by 0 */
> + if (dt <= 10)
> + return;
> +
> + count = intel_uncore_read(uncore, GFXEC);
> + delta = count - ips->last_count2;
> +
> + ips->last_count2 = count;
> + ips->last_time2 = now;
> +
> + /* More magic constants... */
> + ips->gfx_power = div_u64(delta * 1181, dt * 10);
> +}
> +
> +static void gen5_rps_update(struct intel_rps *rps)
> +{
> + spin_lock_irq(&mchdev_lock);
> + __gen5_ips_update(&rps->ips);
> + spin_unlock_irq(&mchdev_lock);
> +}
> +
> +static bool gen5_rps_set(struct intel_rps *rps, u8 val)
> +{
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> + u16 rgvswctl;
> +
> + lockdep_assert_held(&mchdev_lock);
> +
> + rgvswctl = intel_uncore_read16(uncore, MEMSWCTL);
> + if (rgvswctl & MEMCTL_CMD_STS) {
> + DRM_DEBUG("gpu busy, RCS change rejected\n");
> + return false; /* still busy with another command */
> + }
> +
> + val = -val;
> +
> + rgvswctl =
> + (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) |
> + (val << MEMCTL_FREQ_SHIFT) |
> + MEMCTL_SFCAVM;
> + intel_uncore_write16(uncore, MEMSWCTL, rgvswctl);
> + intel_uncore_posting_read16(uncore, MEMSWCTL);
> +
> + rgvswctl |= MEMCTL_CMD_STS;
> + intel_uncore_write16(uncore, MEMSWCTL, rgvswctl);
> +
> + return true;
> +}
> +
> +static unsigned long intel_pxfreq(u32 vidfreq)
> +{
> + int div = (vidfreq & 0x3f0000) >> 16;
> + int post = (vidfreq & 0x3000) >> 12;
> + int pre = (vidfreq & 0x7);
> +
> + if (!pre)
> + return 0;
> +
> + return div * 133333 / (pre << post);
> +}
> +
> +static unsigned int init_emon(struct intel_uncore *uncore)
> +{
> + u8 pxw[16];
> + int i;
> +
> + /* Disable to program */
> + intel_uncore_write(uncore, ECR, 0);
> + intel_uncore_posting_read(uncore, ECR);
> +
> + /* Program energy weights for various events */
> + intel_uncore_write(uncore, SDEW, 0x15040d00);
> + intel_uncore_write(uncore, CSIEW0, 0x007f0000);
> + intel_uncore_write(uncore, CSIEW1, 0x1e220004);
> + intel_uncore_write(uncore, CSIEW2, 0x04000004);
> +
> + for (i = 0; i < 5; i++)
> + intel_uncore_write(uncore, PEW(i), 0);
> + for (i = 0; i < 3; i++)
> + intel_uncore_write(uncore, DEW(i), 0);
> +
> + /* Program P-state weights to account for frequency power adjustment */
> + for (i = 0; i < 16; i++) {
> + u32 pxvidfreq = intel_uncore_read(uncore, PXVFREQ(i));
> + unsigned int freq = intel_pxfreq(pxvidfreq);
> + unsigned int vid =
> + (pxvidfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT;
> + unsigned int val;
> +
> + val = vid * vid * freq / 1000 * 255;
> + val /= 127 * 127 * 900;
> +
> + pxw[i] = val;
> + }
> + /* Render standby states get 0 weight */
> + pxw[14] = 0;
> + pxw[15] = 0;
> +
> + for (i = 0; i < 4; i++) {
> + intel_uncore_write(uncore, PXW(i),
> + pxw[i * 4 + 0] << 24 |
> + pxw[i * 4 + 1] << 16 |
> + pxw[i * 4 + 2] << 8 |
> + pxw[i * 4 + 3] << 0);
> + }
> +
> + /* Adjust magic regs to magic values (more experimental results) */
> + intel_uncore_write(uncore, OGW0, 0);
> + intel_uncore_write(uncore, OGW1, 0);
> + intel_uncore_write(uncore, EG0, 0x00007f00);
> + intel_uncore_write(uncore, EG1, 0x0000000e);
> + intel_uncore_write(uncore, EG2, 0x000e0000);
> + intel_uncore_write(uncore, EG3, 0x68000300);
> + intel_uncore_write(uncore, EG4, 0x42000000);
> + intel_uncore_write(uncore, EG5, 0x00140031);
> + intel_uncore_write(uncore, EG6, 0);
> + intel_uncore_write(uncore, EG7, 0);
> +
> + for (i = 0; i < 8; i++)
> + intel_uncore_write(uncore, PXWL(i), 0);
> +
> + /* Enable PMON + select events */
> + intel_uncore_write(uncore, ECR, 0x80000019);
> +
> + return intel_uncore_read(uncore, LCFUSE02) & LCFUSE_HIV_MASK;
> +}
> +
> +static bool gen5_rps_enable(struct intel_rps *rps)
> +{
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> + u8 fstart, vstart;
> + u32 rgvmodectl;
> +
> + spin_lock_irq(&mchdev_lock);
> +
> + rgvmodectl = intel_uncore_read(uncore, MEMMODECTL);
> +
> + /* Enable temp reporting */
> + intel_uncore_write16(uncore, PMMISC,
> + intel_uncore_read16(uncore, PMMISC) | MCPPCE_EN);
> + intel_uncore_write16(uncore, TSC1,
> + intel_uncore_read16(uncore, TSC1) | TSE);
> +
> + /* 100ms RC evaluation intervals */
> + intel_uncore_write(uncore, RCUPEI, 100000);
> + intel_uncore_write(uncore, RCDNEI, 100000);
> +
> + /* Set max/min thresholds to 90ms and 80ms respectively */
> + intel_uncore_write(uncore, RCBMAXAVG, 90000);
> + intel_uncore_write(uncore, RCBMINAVG, 80000);
> +
> + intel_uncore_write(uncore, MEMIHYST, 1);
> +
> + /* Set up min, max, and cur for interrupt handling */
> + fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >>
> + MEMMODE_FSTART_SHIFT;
> +
> + vstart = (intel_uncore_read(uncore, PXVFREQ(fstart)) &
> + PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT;
> +
> + intel_uncore_write(uncore,
> + MEMINTREN,
> + MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN);
> +
> + intel_uncore_write(uncore, VIDSTART, vstart);
> + intel_uncore_posting_read(uncore, VIDSTART);
> +
> + rgvmodectl |= MEMMODE_SWMODE_EN;
> + intel_uncore_write(uncore, MEMMODECTL, rgvmodectl);
> +
> + if (wait_for_atomic((intel_uncore_read(uncore, MEMSWCTL) &
> + MEMCTL_CMD_STS) == 0, 10))
> + DRM_ERROR("stuck trying to change perf mode\n");
> + mdelay(1);
> +
> + gen5_rps_set(rps, rps->cur_freq);
> +
> + rps->ips.last_count1 = intel_uncore_read(uncore, DMIEC);
> + rps->ips.last_count1 += intel_uncore_read(uncore, DDREC);
> + rps->ips.last_count1 += intel_uncore_read(uncore, CSIEC);
> + rps->ips.last_time1 = jiffies_to_msecs(jiffies);
> +
> + rps->ips.last_count2 = intel_uncore_read(uncore, GFXEC);
> + rps->ips.last_time2 = ktime_get_raw_ns();
> +
> + spin_unlock_irq(&mchdev_lock);
> +
> + rps->ips.corr = init_emon(uncore);
> +
> + return true;
> +}
> +
> +static void gen5_rps_disable(struct intel_rps *rps)
> +{
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> + u16 rgvswctl;
> +
> + spin_lock_irq(&mchdev_lock);
> +
> + rgvswctl = intel_uncore_read16(uncore, MEMSWCTL);
> +
> + /* Ack interrupts, disable EFC interrupt */
> + intel_uncore_write(uncore, MEMINTREN,
> + intel_uncore_read(uncore, MEMINTREN) &
> + ~MEMINT_EVAL_CHG_EN);
> + intel_uncore_write(uncore, MEMINTRSTS, MEMINT_EVAL_CHG);
> + intel_uncore_write(uncore, DEIER,
> + intel_uncore_read(uncore, DEIER) & ~DE_PCU_EVENT);
> + intel_uncore_write(uncore, DEIIR, DE_PCU_EVENT);
> + intel_uncore_write(uncore, DEIMR,
> + intel_uncore_read(uncore, DEIMR) | DE_PCU_EVENT);
> +
> + /* Go back to the starting frequency */
> + gen5_rps_set(rps, rps->idle_freq);
> + mdelay(1);
> + rgvswctl |= MEMCTL_CMD_STS;
> + intel_uncore_write(uncore, MEMSWCTL, rgvswctl);
> + mdelay(1);
> +
> + spin_unlock_irq(&mchdev_lock);
> +}
> +
> +static u32 rps_limits(struct intel_rps *rps, u8 val)
> +{
> + u32 limits;
> +
> + /*
> + * Only set the down limit when we've reached the lowest level to avoid
> + * getting more interrupts, otherwise leave this clear. This prevents a
> + * race in the hw when coming out of rc6: There's a tiny window where
> + * the hw runs at the minimal clock before selecting the desired
> + * frequency, if the down threshold expires in that window we will not
> + * receive a down interrupt.
> + */
> + if (INTEL_GEN(rps_to_i915(rps)) >= 9) {
> + limits = rps->max_freq_softlimit << 23;
> + if (val <= rps->min_freq_softlimit)
> + limits |= rps->min_freq_softlimit << 14;
> + } else {
> + limits = rps->max_freq_softlimit << 24;
> + if (val <= rps->min_freq_softlimit)
> + limits |= rps->min_freq_softlimit << 16;
> + }
> +
> + return limits;
> +}
> +
> +static void rps_set_power(struct intel_rps *rps, int new_power)
> +{
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 threshold_up = 0, threshold_down = 0; /* in % */
> + u32 ei_up = 0, ei_down = 0;
> +
> + lockdep_assert_held(&rps->power.mutex);
> +
> + if (new_power == rps->power.mode)
> + return;
> +
> + /* Note the units here are not exactly 1us, but 1280ns. */
> + switch (new_power) {
> + case LOW_POWER:
> + /* Upclock if more than 95% busy over 16ms */
> + ei_up = 16000;
> + threshold_up = 95;
> +
> + /* Downclock if less than 85% busy over 32ms */
> + ei_down = 32000;
> + threshold_down = 85;
> + break;
> +
> + case BETWEEN:
> + /* Upclock if more than 90% busy over 13ms */
> + ei_up = 13000;
> + threshold_up = 90;
> +
> + /* Downclock if less than 75% busy over 32ms */
> + ei_down = 32000;
> + threshold_down = 75;
> + break;
> +
> + case HIGH_POWER:
> + /* Upclock if more than 85% busy over 10ms */
> + ei_up = 10000;
> + threshold_up = 85;
> +
> + /* Downclock if less than 60% busy over 32ms */
> + ei_down = 32000;
> + threshold_down = 60;
> + break;
> + }
> +
> + /* When byt can survive without system hang with dynamic
> + * sw freq adjustments, this restriction can be lifted.
> + */
> + if (IS_VALLEYVIEW(i915))
> + goto skip_hw_write;
> +
> + intel_uncore_write(uncore, GEN6_RP_UP_EI,
> + GT_INTERVAL_FROM_US(i915, ei_up));
> + intel_uncore_write(uncore, GEN6_RP_UP_THRESHOLD,
> + GT_INTERVAL_FROM_US(i915,
> + ei_up * threshold_up / 100));
> +
> + intel_uncore_write(uncore, GEN6_RP_DOWN_EI,
> + GT_INTERVAL_FROM_US(i915, ei_down));
> + intel_uncore_write(uncore, GEN6_RP_DOWN_THRESHOLD,
> + GT_INTERVAL_FROM_US(i915,
> + ei_down * threshold_down / 100));
> +
> + intel_uncore_write(uncore, GEN6_RP_CONTROL,
> + (INTEL_GEN(i915) > 9 ? 0 : GEN6_RP_MEDIA_TURBO) |
> + GEN6_RP_MEDIA_HW_NORMAL_MODE |
> + GEN6_RP_MEDIA_IS_GFX |
> + GEN6_RP_ENABLE |
> + GEN6_RP_UP_BUSY_AVG |
> + GEN6_RP_DOWN_IDLE_AVG);
> +
> +skip_hw_write:
> + rps->power.mode = new_power;
> + rps->power.up_threshold = threshold_up;
> + rps->power.down_threshold = threshold_down;
> +}
> +
> +static void gen6_rps_set_thresholds(struct intel_rps *rps, u8 val)
> +{
> + int new_power;
> +
> + new_power = rps->power.mode;
> + switch (rps->power.mode) {
> + case LOW_POWER:
> + if (val > rps->efficient_freq + 1 &&
> + val > rps->cur_freq)
> + new_power = BETWEEN;
> + break;
> +
> + case BETWEEN:
> + if (val <= rps->efficient_freq &&
> + val < rps->cur_freq)
> + new_power = LOW_POWER;
> + else if (val >= rps->rp0_freq &&
> + val > rps->cur_freq)
> + new_power = HIGH_POWER;
> + break;
> +
> + case HIGH_POWER:
> + if (val < (rps->rp1_freq + rps->rp0_freq) >> 1 &&
> + val < rps->cur_freq)
> + new_power = BETWEEN;
> + break;
> + }
> + /* Max/min bins are special */
> + if (val <= rps->min_freq_softlimit)
> + new_power = LOW_POWER;
> + if (val >= rps->max_freq_softlimit)
> + new_power = HIGH_POWER;
> +
> + mutex_lock(&rps->power.mutex);
> + if (rps->power.interactive)
> + new_power = HIGH_POWER;
> + rps_set_power(rps, new_power);
> + mutex_unlock(&rps->power.mutex);
> +}
> +
> +void intel_rps_mark_interactive(struct intel_rps *rps, bool interactive)
> +{
> + if (!rps->enabled)
> + return;
> +
> + mutex_lock(&rps->power.mutex);
> + if (interactive) {
> + if (!rps->power.interactive++ && rps->active)
> + rps_set_power(rps, HIGH_POWER);
> + } else {
> + GEM_BUG_ON(!rps->power.interactive);
> + rps->power.interactive--;
> + }
> + mutex_unlock(&rps->power.mutex);
> +}
> +
> +static int gen6_rps_set(struct intel_rps *rps, u8 val)
> +{
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 swreq;
> +
> + if (INTEL_GEN(i915) >= 9)
> + swreq = GEN9_FREQUENCY(val);
> + else if (IS_HASWELL(i915) || IS_BROADWELL(i915))
> + swreq = HSW_FREQUENCY(val);
> + else
> + swreq = (GEN6_FREQUENCY(val) |
> + GEN6_OFFSET(0) |
> + GEN6_AGGRESSIVE_TURBO);
> + intel_uncore_write(uncore, GEN6_RPNSWREQ, swreq);
> +
> + return 0;
> +}
> +
> +static int vlv_rps_set(struct intel_rps *rps, u8 val)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + int err;
> +
> + vlv_punit_get(i915);
> + err = vlv_punit_write(i915, PUNIT_REG_GPU_FREQ_REQ, val);
> + vlv_punit_put(i915);
> +
> + return err;
> +}
> +
> +static int rps_set(struct intel_rps *rps, u8 val)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + int err;
> +
> + if (INTEL_GEN(i915) < 6)
> + return 0;
> +
> + if (val == rps->last_freq)
> + return 0;
> +
> + if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
> + err = vlv_rps_set(rps, val);
> + else
> + err = gen6_rps_set(rps, val);
> + if (err)
> + return err;
> +
> + gen6_rps_set_thresholds(rps, val);
> + rps->last_freq = val;
> +
> + return 0;
> +}
> +
> +void intel_rps_unpark(struct intel_rps *rps)
> +{
> + u8 freq;
> +
> + if (!rps->enabled)
> + return;
> +
> + /*
> + * Use the user's desired frequency as a guide, but for better
> + * performance, jump directly to RPe as our starting frequency.
> + */
> + mutex_lock(&rps->lock);
> + rps->active = true;
> + freq = max(rps->cur_freq, rps->efficient_freq),
> + freq = clamp(freq, rps->min_freq_softlimit, rps->max_freq_softlimit);
> + intel_rps_set(rps, freq);
> + rps->last_adj = 0;
> + mutex_unlock(&rps->lock);
> +
> + if (INTEL_GEN(rps_to_i915(rps)) >= 6)
> + rps_enable_interrupts(rps);
> +
> + if (IS_GEN(rps_to_i915(rps), 5))
> + gen5_rps_update(rps);
> +}
> +
> +void intel_rps_park(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> +
> + if (!rps->enabled)
> + return;
> +
> + if (INTEL_GEN(i915) >= 6)
> + rps_disable_interrupts(rps);
> +
> + rps->active = false;
> + if (rps->last_freq <= rps->idle_freq)
> + return;
> +
> + /*
> + * The punit delays the write of the frequency and voltage until it
> + * determines the GPU is awake. During normal usage we don't want to
> + * waste power changing the frequency if the GPU is sleeping (rc6).
> + * However, the GPU and driver is now idle and we do not want to delay
> + * switching to minimum voltage (reducing power whilst idle) as we do
> + * not expect to be woken in the near future and so must flush the
> + * change by waking the device.
> + *
> + * We choose to take the media powerwell (either would do to trick the
> + * punit into committing the voltage change) as that takes a lot less
> + * power than the render powerwell.
> + */
> + intel_uncore_forcewake_get(rps_to_uncore(rps), FORCEWAKE_MEDIA);
> + rps_set(rps, rps->idle_freq);
> + intel_uncore_forcewake_put(rps_to_uncore(rps), FORCEWAKE_MEDIA);
> +}
> +
> +void intel_rps_boost(struct i915_request *rq)
> +{
> + struct intel_rps *rps = &rq->engine->gt->rps;
> + unsigned long flags;
> +
> + if (i915_request_signaled(rq) || !rps->active)
> + return;
> +
> + /* Serializes with i915_request_retire() */
> + spin_lock_irqsave(&rq->lock, flags);
> + if (!i915_request_has_waitboost(rq) &&
> + !dma_fence_is_signaled_locked(&rq->fence)) {
> + rq->flags |= I915_REQUEST_WAITBOOST;
> +
> + if (!atomic_fetch_inc(&rps->num_waiters) &&
> + READ_ONCE(rps->cur_freq) < rps->boost_freq)
> + schedule_work(&rps->work);
> +
> + atomic_inc(&rps->boosts);
> + }
> + spin_unlock_irqrestore(&rq->lock, flags);
> +}
> +
> +int intel_rps_set(struct intel_rps *rps, u8 val)
> +{
> + int err = 0;
> +
> + lockdep_assert_held(&rps->lock);
> + GEM_BUG_ON(val > rps->max_freq);
> + GEM_BUG_ON(val < rps->min_freq);
> +
> + if (rps->active) {
> + err = rps_set(rps, val);
> +
> + /*
> + * Make sure we continue to get interrupts
> + * until we hit the minimum or maximum frequencies.
> + */
> + if (INTEL_GEN(rps_to_i915(rps)) >= 6) {
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> +
> + intel_uncore_write(uncore, GEN6_RP_INTERRUPT_LIMITS,
> + rps_limits(rps, val));
> +
> + intel_uncore_write(uncore, GEN6_PMINTRMSK,
> + rps_pm_mask(rps, val));
> + }
> + }
> +
> + if (err == 0)
> + rps->cur_freq = val;
> +
> + return err;
> +}
> +
> +static void gen6_rps_init(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> +
> + /* All of these values are in units of 50MHz */
> +
> + /* static values from HW: RP0 > RP1 > RPn (min_freq) */
> + if (IS_GEN9_LP(i915)) {
> + u32 rp_state_cap = intel_uncore_read(uncore, BXT_RP_STATE_CAP);
> +
> + rps->rp0_freq = (rp_state_cap >> 16) & 0xff;
> + rps->rp1_freq = (rp_state_cap >> 8) & 0xff;
> + rps->min_freq = (rp_state_cap >> 0) & 0xff;
> + } else {
> + u32 rp_state_cap = intel_uncore_read(uncore, GEN6_RP_STATE_CAP);
> +
> + rps->rp0_freq = (rp_state_cap >> 0) & 0xff;
> + rps->rp1_freq = (rp_state_cap >> 8) & 0xff;
> + rps->min_freq = (rp_state_cap >> 16) & 0xff;
> + }
> +
> + /* hw_max = RP0 until we check for overclocking */
> + rps->max_freq = rps->rp0_freq;
> +
> + rps->efficient_freq = rps->rp1_freq;
> + if (IS_HASWELL(i915) || IS_BROADWELL(i915) ||
> + IS_GEN9_BC(i915) || INTEL_GEN(i915) >= 10) {
> + u32 ddcc_status = 0;
> +
> + if (sandybridge_pcode_read(i915,
> + HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL,
> + &ddcc_status, NULL) == 0)
> + rps->efficient_freq =
> + clamp_t(u8,
> + (ddcc_status >> 8) & 0xff,
> + rps->min_freq,
> + rps->max_freq);
> + }
> +
> + if (IS_GEN9_BC(i915) || INTEL_GEN(i915) >= 10) {
> + /* Store the frequency values in 16.66 MHZ units, which is
> + * the natural hardware unit for SKL
> + */
> + rps->rp0_freq *= GEN9_FREQ_SCALER;
> + rps->rp1_freq *= GEN9_FREQ_SCALER;
> + rps->min_freq *= GEN9_FREQ_SCALER;
> + rps->max_freq *= GEN9_FREQ_SCALER;
> + rps->efficient_freq *= GEN9_FREQ_SCALER;
> + }
> +}
> +
> +static bool rps_reset(struct intel_rps *rps)
> +{
> + /* force a reset */
> + rps->power.mode = -1;
> + rps->last_freq = -1;
> +
> + if (rps_set(rps, rps->min_freq)) {
> + DRM_ERROR("Failed to reset RPS to initial values\n");
> + return false;
> + }
> +
> + rps->cur_freq = rps->min_freq;
> + return true;
> +}
> +
> +/* See the Gen9_GT_PM_Programming_Guide doc for the below */
> +static bool gen9_rps_enable(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> +
> + /* Program defaults and thresholds for RPS */
> + if (IS_GEN(i915, 9))
> + intel_uncore_write_fw(uncore, GEN6_RC_VIDEO_FREQ,
> + GEN9_FREQUENCY(rps->rp1_freq));
> +
> + /* 1 second timeout */
> + intel_uncore_write_fw(uncore, GEN6_RP_DOWN_TIMEOUT,
> + GT_INTERVAL_FROM_US(i915, 1000000));
> +
> + intel_uncore_write_fw(uncore, GEN6_RP_IDLE_HYSTERSIS, 0xa);
> +
> + return rps_reset(rps);
> +}
> +
> +static bool gen8_rps_enable(struct intel_rps *rps)
> +{
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> +
> + intel_uncore_write_fw(uncore, GEN6_RC_VIDEO_FREQ,
> + HSW_FREQUENCY(rps->rp1_freq));
> +
> + /* NB: Docs say 1s, and 1000000 - which aren't equivalent */
> + intel_uncore_write_fw(uncore, GEN6_RP_DOWN_TIMEOUT,
> + 100000000 / 128); /* 1 second timeout */
> +
> + intel_uncore_write_fw(uncore, GEN6_RP_IDLE_HYSTERSIS, 10);
> +
> + return rps_reset(rps);
> +}
> +
> +static bool gen6_rps_enable(struct intel_rps *rps)
> +{
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> +
> + /* Power down if completely idle for over 50ms */
> + intel_uncore_write_fw(uncore, GEN6_RP_DOWN_TIMEOUT, 50000);
> + intel_uncore_write_fw(uncore, GEN6_RP_IDLE_HYSTERSIS, 10);
> +
> + return rps_reset(rps);
> +}
> +
> +static int chv_rps_max_freq(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 val;
> +
> + val = vlv_punit_read(i915, FB_GFX_FMAX_AT_VMAX_FUSE);
> +
> + switch (RUNTIME_INFO(i915)->sseu.eu_total) {
> + case 8:
> + /* (2 * 4) config */
> + val >>= FB_GFX_FMAX_AT_VMAX_2SS4EU_FUSE_SHIFT;
> + break;
> + case 12:
> + /* (2 * 6) config */
> + val >>= FB_GFX_FMAX_AT_VMAX_2SS6EU_FUSE_SHIFT;
> + break;
> + case 16:
> + /* (2 * 8) config */
> + default:
> + /* Setting (2 * 8) Min RP0 for any other combination */
> + val >>= FB_GFX_FMAX_AT_VMAX_2SS8EU_FUSE_SHIFT;
> + break;
> + }
> +
> + return val & FB_GFX_FREQ_FUSE_MASK;
> +}
> +
> +static int chv_rps_rpe_freq(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 val;
> +
> + val = vlv_punit_read(i915, PUNIT_GPU_DUTYCYCLE_REG);
> + val >>= PUNIT_GPU_DUTYCYCLE_RPE_FREQ_SHIFT;
> +
> + return val & PUNIT_GPU_DUTYCYCLE_RPE_FREQ_MASK;
> +}
> +
> +static int chv_rps_guar_freq(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 val;
> +
> + val = vlv_punit_read(i915, FB_GFX_FMAX_AT_VMAX_FUSE);
> +
> + return val & FB_GFX_FREQ_FUSE_MASK;
> +}
> +
> +static u32 chv_rps_min_freq(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 val;
> +
> + val = vlv_punit_read(i915, FB_GFX_FMIN_AT_VMIN_FUSE);
> + val >>= FB_GFX_FMIN_AT_VMIN_FUSE_SHIFT;
> +
> + return val & FB_GFX_FREQ_FUSE_MASK;
> +}
> +
> +static bool chv_rps_enable(struct intel_rps *rps)
> +{
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 val;
> +
> + /* 1: Program defaults and thresholds for RPS*/
> + intel_uncore_write_fw(uncore, GEN6_RP_DOWN_TIMEOUT, 1000000);
> + intel_uncore_write_fw(uncore, GEN6_RP_UP_THRESHOLD, 59400);
> + intel_uncore_write_fw(uncore, GEN6_RP_DOWN_THRESHOLD, 245000);
> + intel_uncore_write_fw(uncore, GEN6_RP_UP_EI, 66000);
> + intel_uncore_write_fw(uncore, GEN6_RP_DOWN_EI, 350000);
> +
> + intel_uncore_write_fw(uncore, GEN6_RP_IDLE_HYSTERSIS, 10);
> +
> + /* 2: Enable RPS */
> + intel_uncore_write_fw(uncore, GEN6_RP_CONTROL,
> + GEN6_RP_MEDIA_HW_NORMAL_MODE |
> + GEN6_RP_MEDIA_IS_GFX |
> + GEN6_RP_ENABLE |
> + GEN6_RP_UP_BUSY_AVG |
> + GEN6_RP_DOWN_IDLE_AVG);
> +
> + /* Setting Fixed Bias */
> + vlv_punit_get(i915);
> +
> + val = VLV_OVERRIDE_EN | VLV_SOC_TDP_EN | CHV_BIAS_CPU_50_SOC_50;
> + vlv_punit_write(i915, VLV_TURBO_SOC_OVERRIDE, val);
> +
> + val = vlv_punit_read(i915, PUNIT_REG_GPU_FREQ_STS);
> +
> + vlv_punit_put(i915);
> +
> + /* RPS code assumes GPLL is used */
> + WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n");
> +
> + DRM_DEBUG_DRIVER("GPLL enabled? %s\n", yesno(val & GPLLENABLE));
> + DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val);
> +
> + return rps_reset(rps);
> +}
> +
> +static int vlv_rps_guar_freq(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 val, rp1;
> +
> + val = vlv_nc_read(i915, IOSF_NC_FB_GFX_FREQ_FUSE);
> +
> + rp1 = val & FB_GFX_FGUARANTEED_FREQ_FUSE_MASK;
> + rp1 >>= FB_GFX_FGUARANTEED_FREQ_FUSE_SHIFT;
> +
> + return rp1;
> +}
> +
> +static int vlv_rps_max_freq(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 val, rp0;
> +
> + val = vlv_nc_read(i915, IOSF_NC_FB_GFX_FREQ_FUSE);
> +
> + rp0 = (val & FB_GFX_MAX_FREQ_FUSE_MASK) >> FB_GFX_MAX_FREQ_FUSE_SHIFT;
> + /* Clamp to max */
> + rp0 = min_t(u32, rp0, 0xea);
> +
> + return rp0;
> +}
> +
> +static int vlv_rps_rpe_freq(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 val, rpe;
> +
> + val = vlv_nc_read(i915, IOSF_NC_FB_GFX_FMAX_FUSE_LO);
> + rpe = (val & FB_FMAX_VMIN_FREQ_LO_MASK) >> FB_FMAX_VMIN_FREQ_LO_SHIFT;
> + val = vlv_nc_read(i915, IOSF_NC_FB_GFX_FMAX_FUSE_HI);
> + rpe |= (val & FB_FMAX_VMIN_FREQ_HI_MASK) << 5;
> +
> + return rpe;
> +}
> +
> +static int vlv_rps_min_freq(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 val;
> +
> + val = vlv_punit_read(i915, PUNIT_REG_GPU_LFM) & 0xff;
> + /*
> + * According to the BYT Punit GPU turbo HAS 1.1.6.3 the minimum value
> + * for the minimum frequency in GPLL mode is 0xc1. Contrary to this on
> + * a BYT-M B0 the above register contains 0xbf. Moreover when setting
> + * a frequency Punit will not allow values below 0xc0. Clamp it 0xc0
> + * to make sure it matches what Punit accepts.
> + */
> + return max_t(u32, val, 0xc0);
> +}
> +
> +static bool vlv_rps_enable(struct intel_rps *rps)
> +{
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 val;
> +
> + intel_uncore_write_fw(uncore, GEN6_RP_DOWN_TIMEOUT, 1000000);
> + intel_uncore_write_fw(uncore, GEN6_RP_UP_THRESHOLD, 59400);
> + intel_uncore_write_fw(uncore, GEN6_RP_DOWN_THRESHOLD, 245000);
> + intel_uncore_write_fw(uncore, GEN6_RP_UP_EI, 66000);
> + intel_uncore_write_fw(uncore, GEN6_RP_DOWN_EI, 350000);
> +
> + intel_uncore_write_fw(uncore, GEN6_RP_IDLE_HYSTERSIS, 10);
> +
> + intel_uncore_write_fw(uncore, GEN6_RP_CONTROL,
> + GEN6_RP_MEDIA_TURBO |
> + GEN6_RP_MEDIA_HW_NORMAL_MODE |
> + GEN6_RP_MEDIA_IS_GFX |
> + GEN6_RP_ENABLE |
> + GEN6_RP_UP_BUSY_AVG |
> + GEN6_RP_DOWN_IDLE_CONT);
> +
> + vlv_punit_get(i915);
> +
> + /* Setting Fixed Bias */
> + val = VLV_OVERRIDE_EN | VLV_SOC_TDP_EN | VLV_BIAS_CPU_125_SOC_875;
> + vlv_punit_write(i915, VLV_TURBO_SOC_OVERRIDE, val);
> +
> + val = vlv_punit_read(i915, PUNIT_REG_GPU_FREQ_STS);
> +
> + vlv_punit_put(i915);
> +
> + /* RPS code assumes GPLL is used */
> + WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n");
> +
> + DRM_DEBUG_DRIVER("GPLL enabled? %s\n", yesno(val & GPLLENABLE));
> + DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val);
> +
> + return rps_reset(rps);
> +}
> +
> +static unsigned long __ips_gfx_val(struct intel_ips *ips)
> +{
> + struct intel_rps *rps = container_of(ips, typeof(*rps), ips);
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> + unsigned long t, corr, state1, corr2, state2;
> + u32 pxvid, ext_v;
> +
> + lockdep_assert_held(&mchdev_lock);
> +
> + pxvid = intel_uncore_read(uncore, PXVFREQ(rps->cur_freq));
> + pxvid = (pxvid >> 24) & 0x7f;
> + ext_v = pvid_to_extvid(rps_to_i915(rps), pxvid);
> +
> + state1 = ext_v;
> +
> + /* Revel in the empirically derived constants */
> +
> + /* Correction factor in 1/100000 units */
> + t = ips_mch_val(uncore);
> + if (t > 80)
> + corr = t * 2349 + 135940;
> + else if (t >= 50)
> + corr = t * 964 + 29317;
> + else /* < 50 */
> + corr = t * 301 + 1004;
> +
> + corr = corr * 150142 * state1 / 10000 - 78642;
> + corr /= 100000;
> + corr2 = corr * ips->corr;
> +
> + state2 = corr2 * state1 / 10000;
> + state2 /= 100; /* convert to mW */
> +
> + __gen5_ips_update(ips);
> +
> + return ips->gfx_power + state2;
> +}
> +
> +void intel_rps_enable(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> +
> + intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
> + if (IS_CHERRYVIEW(i915))
> + rps->enabled = chv_rps_enable(rps);
> + else if (IS_VALLEYVIEW(i915))
> + rps->enabled = vlv_rps_enable(rps);
> + else if (INTEL_GEN(i915) >= 9)
> + rps->enabled = gen9_rps_enable(rps);
> + else if (INTEL_GEN(i915) >= 8)
> + rps->enabled = gen8_rps_enable(rps);
> + else if (INTEL_GEN(i915) >= 6)
> + rps->enabled = gen6_rps_enable(rps);
> + else if (IS_IRONLAKE_M(i915))
> + rps->enabled = gen5_rps_enable(rps);
> + intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
> + if (!rps->enabled)
> + return;
> +
> + WARN_ON(rps->max_freq < rps->min_freq);
> + WARN_ON(rps->idle_freq > rps->max_freq);
> +
> + WARN_ON(rps->efficient_freq < rps->min_freq);
> + WARN_ON(rps->efficient_freq > rps->max_freq);
> +}
> +
> +static void gen6_rps_disable(struct intel_rps *rps)
> +{
> + intel_uncore_write(rps_to_uncore(rps), GEN6_RP_CONTROL, 0);
> +}
> +
> +void intel_rps_disable(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> +
> + rps->enabled = false;
> +
> + if (INTEL_GEN(i915) >= 6)
> + gen6_rps_disable(rps);
> + else if (IS_IRONLAKE_M(i915))
> + gen5_rps_disable(rps);
> +}
> +
> +static int byt_gpu_freq(struct intel_rps *rps, int val)
> +{
> + /*
> + * N = val - 0xb7
> + * Slow = Fast = GPLL ref * N
> + */
> + return DIV_ROUND_CLOSEST(rps->gpll_ref_freq * (val - 0xb7), 1000);
> +}
> +
> +static int byt_freq_opcode(struct intel_rps *rps, int val)
> +{
> + return DIV_ROUND_CLOSEST(1000 * val, rps->gpll_ref_freq) + 0xb7;
> +}
> +
> +static int chv_gpu_freq(struct intel_rps *rps, int val)
> +{
> + /*
> + * N = val / 2
> + * CU (slow) = CU2x (fast) / 2 = GPLL ref * N / 2
> + */
> + return DIV_ROUND_CLOSEST(rps->gpll_ref_freq * val, 2 * 2 * 1000);
> +}
> +
> +static int chv_freq_opcode(struct intel_rps *rps, int val)
> +{
> + /* CHV needs even values */
> + return DIV_ROUND_CLOSEST(2 * 1000 * val, rps->gpll_ref_freq) * 2;
> +}
> +
> +int intel_gpu_freq(struct intel_rps *rps, int val)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> +
> + if (INTEL_GEN(i915) >= 9)
> + return DIV_ROUND_CLOSEST(val * GT_FREQUENCY_MULTIPLIER,
> + GEN9_FREQ_SCALER);
> + else if (IS_CHERRYVIEW(i915))
> + return chv_gpu_freq(rps, val);
> + else if (IS_VALLEYVIEW(i915))
> + return byt_gpu_freq(rps, val);
> + else
> + return val * GT_FREQUENCY_MULTIPLIER;
> +}
> +
> +int intel_freq_opcode(struct intel_rps *rps, int val)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> +
> + if (INTEL_GEN(i915) >= 9)
> + return DIV_ROUND_CLOSEST(val * GEN9_FREQ_SCALER,
> + GT_FREQUENCY_MULTIPLIER);
> + else if (IS_CHERRYVIEW(i915))
> + return chv_freq_opcode(rps, val);
> + else if (IS_VALLEYVIEW(i915))
> + return byt_freq_opcode(rps, val);
> + else
> + return DIV_ROUND_CLOSEST(val, GT_FREQUENCY_MULTIPLIER);
> +}
> +
> +static void vlv_init_gpll_ref_freq(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> +
> + rps->gpll_ref_freq =
> + vlv_get_cck_clock(i915, "GPLL ref",
> + CCK_GPLL_CLOCK_CONTROL,
> + i915->czclk_freq);
> +
> + DRM_DEBUG_DRIVER("GPLL reference freq: %d kHz\n", rps->gpll_ref_freq);
> +}
> +
> +static void vlv_rps_init(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 val;
> +
> + vlv_iosf_sb_get(i915,
> + BIT(VLV_IOSF_SB_PUNIT) |
> + BIT(VLV_IOSF_SB_NC) |
> + BIT(VLV_IOSF_SB_CCK));
> +
> + vlv_init_gpll_ref_freq(rps);
> +
> + val = vlv_punit_read(i915, PUNIT_REG_GPU_FREQ_STS);
> + switch ((val >> 6) & 3) {
> + case 0:
> + case 1:
> + i915->mem_freq = 800;
> + break;
> + case 2:
> + i915->mem_freq = 1066;
> + break;
> + case 3:
> + i915->mem_freq = 1333;
> + break;
> + }
> + DRM_DEBUG_DRIVER("DDR speed: %d MHz\n", i915->mem_freq);
> +
> + rps->max_freq = vlv_rps_max_freq(rps);
> + rps->rp0_freq = rps->max_freq;
> + DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n",
> + intel_gpu_freq(rps, rps->max_freq),
> + rps->max_freq);
> +
> + rps->efficient_freq = vlv_rps_rpe_freq(rps);
> + DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n",
> + intel_gpu_freq(rps, rps->efficient_freq),
> + rps->efficient_freq);
> +
> + rps->rp1_freq = vlv_rps_guar_freq(rps);
> + DRM_DEBUG_DRIVER("RP1(Guar Freq) GPU freq: %d MHz (%u)\n",
> + intel_gpu_freq(rps, rps->rp1_freq),
> + rps->rp1_freq);
> +
> + rps->min_freq = vlv_rps_min_freq(rps);
> + DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n",
> + intel_gpu_freq(rps, rps->min_freq),
> + rps->min_freq);
> +
> + vlv_iosf_sb_put(i915,
> + BIT(VLV_IOSF_SB_PUNIT) |
> + BIT(VLV_IOSF_SB_NC) |
> + BIT(VLV_IOSF_SB_CCK));
> +}
> +
> +static void chv_rps_init(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 val;
> +
> + vlv_iosf_sb_get(i915,
> + BIT(VLV_IOSF_SB_PUNIT) |
> + BIT(VLV_IOSF_SB_NC) |
> + BIT(VLV_IOSF_SB_CCK));
> +
> + vlv_init_gpll_ref_freq(rps);
> +
> + val = vlv_cck_read(i915, CCK_FUSE_REG);
> +
> + switch ((val >> 2) & 0x7) {
> + case 3:
> + i915->mem_freq = 2000;
> + break;
> + default:
> + i915->mem_freq = 1600;
> + break;
> + }
> + DRM_DEBUG_DRIVER("DDR speed: %d MHz\n", i915->mem_freq);
> +
> + rps->max_freq = chv_rps_max_freq(rps);
> + rps->rp0_freq = rps->max_freq;
> + DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n",
> + intel_gpu_freq(rps, rps->max_freq),
> + rps->max_freq);
> +
> + rps->efficient_freq = chv_rps_rpe_freq(rps);
> + DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n",
> + intel_gpu_freq(rps, rps->efficient_freq),
> + rps->efficient_freq);
> +
> + rps->rp1_freq = chv_rps_guar_freq(rps);
> + DRM_DEBUG_DRIVER("RP1(Guar) GPU freq: %d MHz (%u)\n",
> + intel_gpu_freq(rps, rps->rp1_freq),
> + rps->rp1_freq);
> +
> + rps->min_freq = chv_rps_min_freq(rps);
> + DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n",
> + intel_gpu_freq(rps, rps->min_freq),
> + rps->min_freq);
> +
> + vlv_iosf_sb_put(i915,
> + BIT(VLV_IOSF_SB_PUNIT) |
> + BIT(VLV_IOSF_SB_NC) |
> + BIT(VLV_IOSF_SB_CCK));
> +
> + WARN_ONCE((rps->max_freq | rps->efficient_freq | rps->rp1_freq |
> + rps->min_freq) & 1,
> + "Odd GPU freq values\n");
> +}
> +
> +static void vlv_c0_read(struct intel_uncore *uncore, struct intel_rps_ei *ei)
> +{
> + ei->ktime = ktime_get_raw();
> + ei->render_c0 = intel_uncore_read(uncore, VLV_RENDER_C0_COUNT);
> + ei->media_c0 = intel_uncore_read(uncore, VLV_MEDIA_C0_COUNT);
> +}
> +
> +static u32 vlv_wa_c0_ei(struct intel_rps *rps, u32 pm_iir)
> +{
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> + const struct intel_rps_ei *prev = &rps->ei;
> + struct intel_rps_ei now;
> + u32 events = 0;
> +
> + if ((pm_iir & GEN6_PM_RP_UP_EI_EXPIRED) == 0)
> + return 0;
> +
> + vlv_c0_read(uncore, &now);
> +
> + if (prev->ktime) {
> + u64 time, c0;
> + u32 render, media;
> +
> + time = ktime_us_delta(now.ktime, prev->ktime);
> +
> + time *= rps_to_i915(rps)->czclk_freq;
> +
> + /* Workload can be split between render + media,
> + * e.g. SwapBuffers being blitted in X after being rendered in
> + * mesa. To account for this we need to combine both engines
> + * into our activity counter.
> + */
> + render = now.render_c0 - prev->render_c0;
> + media = now.media_c0 - prev->media_c0;
> + c0 = max(render, media);
> + c0 *= 1000 * 100 << 8; /* to usecs and scale to threshold% */
> +
> + if (c0 > time * rps->power.up_threshold)
> + events = GEN6_PM_RP_UP_THRESHOLD;
> + else if (c0 < time * rps->power.down_threshold)
> + events = GEN6_PM_RP_DOWN_THRESHOLD;
> + }
> +
> + rps->ei = now;
> + return events;
> +}
> +
> +static void rps_work(struct work_struct *work)
> +{
> + struct intel_rps *rps = container_of(work, typeof(*rps), work);
> + struct intel_gt *gt = rps_to_gt(rps);
> + bool client_boost = false;
> + int new_freq, adj, min, max;
> + u32 pm_iir = 0;
> +
> + spin_lock_irq(&gt->irq_lock);
> + pm_iir = fetch_and_zero(&rps->pm_iir);
> + client_boost = atomic_read(&rps->num_waiters);
> + spin_unlock_irq(&gt->irq_lock);
> +
> + /* Make sure we didn't queue anything we're not going to process. */
> + if ((pm_iir & rps->pm_events) == 0 && !client_boost)
> + goto out;
> +
> + mutex_lock(&rps->lock);
> +
> + pm_iir |= vlv_wa_c0_ei(rps, pm_iir);
> +
> + adj = rps->last_adj;
> + new_freq = rps->cur_freq;
> + min = rps->min_freq_softlimit;
> + max = rps->max_freq_softlimit;
> + if (client_boost)
> + max = rps->max_freq;
> + if (client_boost && new_freq < rps->boost_freq) {
> + new_freq = rps->boost_freq;
> + adj = 0;
> + } else if (pm_iir & GEN6_PM_RP_UP_THRESHOLD) {
> + if (adj > 0)
> + adj *= 2;
> + else /* CHV needs even encode values */
> + adj = IS_CHERRYVIEW(gt->i915) ? 2 : 1;
> +
> + if (new_freq >= rps->max_freq_softlimit)
> + adj = 0;
> + } else if (client_boost) {
> + adj = 0;
> + } else if (pm_iir & GEN6_PM_RP_DOWN_TIMEOUT) {
> + if (rps->cur_freq > rps->efficient_freq)
> + new_freq = rps->efficient_freq;
> + else if (rps->cur_freq > rps->min_freq_softlimit)
> + new_freq = rps->min_freq_softlimit;
> + adj = 0;
> + } else if (pm_iir & GEN6_PM_RP_DOWN_THRESHOLD) {
> + if (adj < 0)
> + adj *= 2;
> + else /* CHV needs even encode values */
> + adj = IS_CHERRYVIEW(gt->i915) ? -2 : -1;
> +
> + if (new_freq <= rps->min_freq_softlimit)
> + adj = 0;
> + } else { /* unknown event */
> + adj = 0;
> + }
> +
> + rps->last_adj = adj;
> +
> + /*
> + * Limit deboosting and boosting to keep ourselves at the extremes
> + * when in the respective power modes (i.e. slowly decrease frequencies
> + * while in the HIGH_POWER zone and slowly increase frequencies while
> + * in the LOW_POWER zone). On idle, we will hit the timeout and drop
> + * to the next level quickly, and conversely if busy we expect to
> + * hit a waitboost and rapidly switch into max power.
> + */
> + if ((adj < 0 && rps->power.mode == HIGH_POWER) ||
> + (adj > 0 && rps->power.mode == LOW_POWER))
> + rps->last_adj = 0;
> +
> + /* sysfs frequency interfaces may have snuck in while servicing the
> + * interrupt
> + */
> + new_freq += adj;
> + new_freq = clamp_t(int, new_freq, min, max);
> +
> + if (intel_rps_set(rps, new_freq)) {
> + DRM_DEBUG_DRIVER("Failed to set new GPU frequency\n");
> + rps->last_adj = 0;
> + }
> +
> + mutex_unlock(&rps->lock);
> +
> +out:
> + spin_lock_irq(&gt->irq_lock);
> + gen6_gt_pm_unmask_irq(gt, rps->pm_events);
> + spin_unlock_irq(&gt->irq_lock);
> +}
> +
> +void gen11_rps_irq_handler(struct intel_rps *rps, u32 pm_iir)
> +{
> + struct intel_gt *gt = rps_to_gt(rps);
> + const u32 events = rps->pm_events & pm_iir;
> +
> + lockdep_assert_held(&gt->irq_lock);
> +
> + if (unlikely(!events))
> + return;
> +
> + gen6_gt_pm_mask_irq(gt, events);
> +
> + rps->pm_iir |= events;
> + schedule_work(&rps->work);
> +}
> +
> +void gen6_rps_irq_handler(struct intel_rps *rps, u32 pm_iir)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> +
> + if (pm_iir & rps->pm_events) {
> + struct intel_gt *gt = rps_to_gt(rps);
> +
> + spin_lock(&gt->irq_lock);
> + gen6_gt_pm_mask_irq(gt, pm_iir & rps->pm_events);
> + rps->pm_iir |= pm_iir & rps->pm_events;
> + schedule_work(&rps->work);
> + spin_unlock(&gt->irq_lock);
> + }
> +
> + if (INTEL_GEN(i915) >= 8)
> + return;
> +
> + if (pm_iir & PM_VEBOX_USER_INTERRUPT)
> + intel_engine_breadcrumbs_irq(i915->engine[VECS0]);
> +
> + if (pm_iir & PM_VEBOX_CS_ERROR_INTERRUPT)
> + DRM_DEBUG("Command parser error, pm_iir 0x%08x\n", pm_iir);
> +}
> +
> +void gen5_rps_irq_handler(struct intel_rps *rps)
> +{
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> + u32 busy_up, busy_down, max_avg, min_avg;
> + u8 new_freq;
> +
> + spin_lock(&mchdev_lock);
> +
> + intel_uncore_write16(uncore,
> + MEMINTRSTS,
> + intel_uncore_read(uncore, MEMINTRSTS));
> +
> + intel_uncore_write16(uncore, MEMINTRSTS, MEMINT_EVAL_CHG);
> + busy_up = intel_uncore_read(uncore, RCPREVBSYTUPAVG);
> + busy_down = intel_uncore_read(uncore, RCPREVBSYTDNAVG);
> + max_avg = intel_uncore_read(uncore, RCBMAXAVG);
> + min_avg = intel_uncore_read(uncore, RCBMINAVG);
> +
> + /* Handle RCS change request from hw */
> + new_freq = rps->cur_freq;
> + if (busy_up > max_avg)
> + new_freq++;
> + else if (busy_down < min_avg)
> + new_freq--;
> + new_freq = clamp(new_freq,
> + rps->min_freq_softlimit,
> + rps->max_freq_softlimit);
> +
> + if (new_freq != rps->cur_freq && gen5_rps_set(rps, new_freq))
> + rps->cur_freq = new_freq;
> +
> + spin_unlock(&mchdev_lock);
> +}
> +
> +void intel_rps_init(struct intel_rps *rps)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> +
> + mutex_init(&rps->lock);
> + mutex_init(&rps->power.mutex);
> +
> + INIT_WORK(&rps->work, rps_work);
> +
> + atomic_set(&rps->num_waiters, 0);
> +
> + if (IS_CHERRYVIEW(i915))
> + chv_rps_init(rps);
> + else if (IS_VALLEYVIEW(i915))
> + vlv_rps_init(rps);
> + else if (INTEL_GEN(i915) >= 6)
> + gen6_rps_init(rps);
> + else if (IS_IRONLAKE_M(i915))
> + gen5_rps_init(rps);
> +
> + /* Derive initial user preferences/limits from the hardware limits */
> + rps->max_freq_softlimit = rps->max_freq;
> + rps->min_freq_softlimit = rps->min_freq;
> +
> + /* After setting max-softlimit, find the overclock max freq */
> + if (IS_GEN(i915, 6) || IS_IVYBRIDGE(i915) || IS_HASWELL(i915)) {
> + u32 params = 0;
> +
> + sandybridge_pcode_read(i915, GEN6_READ_OC_PARAMS,
> + &params, NULL);
> + if (params & BIT(31)) { /* OC supported */
> + DRM_DEBUG_DRIVER("Overclocking supported, max: %dMHz, overclock: %dMHz\n",
> + (rps->max_freq & 0xff) * 50,
> + (params & 0xff) * 50);
> + rps->max_freq = params & 0xff;
> + }
> + }
> +
> + /* Finally allow us to boost to max by default */
> + rps->boost_freq = rps->max_freq;
> + rps->idle_freq = rps->min_freq;
> + rps->cur_freq = rps->idle_freq;
> +
> + rps->pm_intrmsk_mbz = 0;
> +
> + /*
> + * SNB,IVB,HSW can while VLV,CHV may hard hang on looping batchbuffer
> + * if GEN6_PM_UP_EI_EXPIRED is masked.
> + *
> + * TODO: verify if this can be reproduced on VLV,CHV.
> + */
> + if (INTEL_GEN(i915) <= 7)
> + rps->pm_intrmsk_mbz |= GEN6_PM_RP_UP_EI_EXPIRED;
> +
> + if (INTEL_GEN(i915) >= 8)
> + rps->pm_intrmsk_mbz |= GEN8_PMINTR_DISABLE_REDIRECT_TO_GUC;
> +}
> +
> +u32 intel_get_cagf(struct intel_rps *rps, u32 rpstat)
> +{
> + struct drm_i915_private *i915 = rps_to_i915(rps);
> + u32 cagf;
> +
> + if (INTEL_GEN(i915) >= 9)
> + cagf = (rpstat & GEN9_CAGF_MASK) >> GEN9_CAGF_SHIFT;
> + else if (IS_HASWELL(i915) || IS_BROADWELL(i915))
> + cagf = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT;
> + else
> + cagf = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
> +
> + return cagf;
> +}
> +
> +/* External interface for intel_ips.ko */
> +
> +static struct drm_i915_private __rcu *ips_mchdev;
> +
> +/**
> + * Tells the intel_ips driver that the i915 driver is now loaded, if
> + * IPS got loaded first.
> + *
> + * This awkward dance is so that neither module has to depend on the
> + * other in order for IPS to do the appropriate communication of
> + * GPU turbo limits to i915.
> + */
> +static void
> +ips_ping_for_i915_load(void)
> +{
> + void (*link)(void);
> +
> + link = symbol_get(ips_link_to_i915_driver);
> + if (link) {
> + link();
> + symbol_put(ips_link_to_i915_driver);
> + }
> +}
> +
> +void intel_rps_driver_register(struct intel_rps *rps)
> +{
> + struct intel_gt *gt = rps_to_gt(rps);
> +
> + /*
> + * We only register the i915 ips part with intel-ips once everything is
> + * set up, to avoid intel-ips sneaking in and reading bogus values.
> + */
> + if (IS_GEN(gt->i915, 5)) {
> + rcu_assign_pointer(ips_mchdev, gt->i915);
> + ips_ping_for_i915_load();
> + }
> +}
> +
> +void intel_rps_driver_unregister(struct intel_rps *rps)
> +{
> + rcu_assign_pointer(ips_mchdev, NULL);
> +}
> +
> +static struct drm_i915_private *mchdev_get(void)
> +{
> + struct drm_i915_private *i915;
> +
> + rcu_read_lock();
> + i915 = rcu_dereference(ips_mchdev);
> + if (!kref_get_unless_zero(&i915->drm.ref))
> + i915 = NULL;
> + rcu_read_unlock();
> +
> + return i915;
> +}
> +
> +/**
> + * i915_read_mch_val - return value for IPS use
> + *
> + * Calculate and return a value for the IPS driver to use when deciding whether
> + * we have thermal and power headroom to increase CPU or GPU power budget.
> + */
> +unsigned long i915_read_mch_val(void)
> +{
> + struct drm_i915_private *i915;
> + unsigned long chipset_val = 0;
> + unsigned long graphics_val = 0;
> + intel_wakeref_t wakeref;
> +
> + i915 = mchdev_get();
> + if (!i915)
> + return 0;
> +
> + with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
> + struct intel_ips *ips = &i915->gt.rps.ips;
> +
> + spin_lock_irq(&mchdev_lock);
> + chipset_val = __ips_chipset_val(ips);
> + graphics_val = __ips_gfx_val(ips);
> + spin_unlock_irq(&mchdev_lock);
> + }
> +
> + drm_dev_put(&i915->drm);
> + return chipset_val + graphics_val;
> +}
> +EXPORT_SYMBOL_GPL(i915_read_mch_val);
> +
> +/**
> + * i915_gpu_raise - raise GPU frequency limit
> + *
> + * Raise the limit; IPS indicates we have thermal headroom.
> + */
> +bool i915_gpu_raise(void)
> +{
> + struct drm_i915_private *i915;
> + struct intel_rps *rps;
> +
> + i915 = mchdev_get();
> + if (!i915)
> + return false;
> +
> + rps = &i915->gt.rps;
> +
> + spin_lock_irq(&mchdev_lock);
> + if (rps->max_freq_softlimit < rps->max_freq)
> + rps->max_freq_softlimit++;
> + spin_unlock_irq(&mchdev_lock);
> +
> + drm_dev_put(&i915->drm);
> + return true;
> +}
> +EXPORT_SYMBOL_GPL(i915_gpu_raise);
> +
> +/**
> + * i915_gpu_lower - lower GPU frequency limit
> + *
> + * IPS indicates we're close to a thermal limit, so throttle back the GPU
> + * frequency maximum.
> + */
> +bool i915_gpu_lower(void)
> +{
> + struct drm_i915_private *i915;
> + struct intel_rps *rps;
> +
> + i915 = mchdev_get();
> + if (!i915)
> + return false;
> +
> + rps = &i915->gt.rps;
> +
> + spin_lock_irq(&mchdev_lock);
> + if (rps->max_freq_softlimit > rps->min_freq)
> + rps->max_freq_softlimit--;
> + spin_unlock_irq(&mchdev_lock);
> +
> + drm_dev_put(&i915->drm);
> + return true;
> +}
> +EXPORT_SYMBOL_GPL(i915_gpu_lower);
> +
> +/**
> + * i915_gpu_busy - indicate GPU business to IPS
> + *
> + * Tell the IPS driver whether or not the GPU is busy.
> + */
> +bool i915_gpu_busy(void)
> +{
> + struct drm_i915_private *i915;
> + bool ret;
> +
> + i915 = mchdev_get();
> + if (!i915)
> + return false;
> +
> + ret = i915->gt.awake;
> +
> + drm_dev_put(&i915->drm);
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(i915_gpu_busy);
> +
> +/**
> + * i915_gpu_turbo_disable - disable graphics turbo
> + *
> + * Disable graphics turbo by resetting the max frequency and setting the
> + * current frequency to the default.
> + */
> +bool i915_gpu_turbo_disable(void)
> +{
> + struct drm_i915_private *i915;
> + struct intel_rps *rps;
> + bool ret;
> +
> + i915 = mchdev_get();
> + if (!i915)
> + return false;
> +
> + rps = &i915->gt.rps;
> +
> + spin_lock_irq(&mchdev_lock);
> + rps->max_freq_softlimit = rps->min_freq;
> + ret = gen5_rps_set(&i915->gt.rps, rps->min_freq);
> + spin_unlock_irq(&mchdev_lock);
> +
> + drm_dev_put(&i915->drm);
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable);
> diff --git a/drivers/gpu/drm/i915/gt/intel_rps.h b/drivers/gpu/drm/i915/gt/intel_rps.h
> new file mode 100644
> index 000000000000..997a4b4e0207
> --- /dev/null
> +++ b/drivers/gpu/drm/i915/gt/intel_rps.h
> @@ -0,0 +1,37 @@
> +/*
> + * SPDX-License-Identifier: MIT
> + *
> + * Copyright © 2019 Intel Corporation
> + */
> +
> +#ifndef INTEL_RPS_H
> +#define INTEL_RPS_H
> +
> +#include "intel_rps_types.h"
> +
> +struct i915_request;
> +
> +void intel_rps_init(struct intel_rps *rps);
> +
> +void intel_rps_driver_register(struct intel_rps *rps);
> +void intel_rps_driver_unregister(struct intel_rps *rps);
> +
> +void intel_rps_enable(struct intel_rps *rps);
> +void intel_rps_disable(struct intel_rps *rps);
> +
> +void intel_rps_park(struct intel_rps *rps);
> +void intel_rps_unpark(struct intel_rps *rps);
> +void intel_rps_boost(struct i915_request *rq);
> +
> +int intel_rps_set(struct intel_rps *rps, u8 val);
> +void intel_rps_mark_interactive(struct intel_rps *rps, bool interactive);
> +
> +int intel_gpu_freq(struct intel_rps *rps, int val);
> +int intel_freq_opcode(struct intel_rps *rps, int val);
> +u32 intel_get_cagf(struct intel_rps *rps, u32 rpstat1);
> +
> +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);
> +
> +#endif /* INTEL_RPS_H */
> diff --git a/drivers/gpu/drm/i915/gt/intel_rps_types.h b/drivers/gpu/drm/i915/gt/intel_rps_types.h
> new file mode 100644
> index 000000000000..40eb1fb651e7
> --- /dev/null
> +++ b/drivers/gpu/drm/i915/gt/intel_rps_types.h
> @@ -0,0 +1,93 @@
> +/*
> + * SPDX-License-Identifier: MIT
> + *
> + * Copyright © 2019 Intel Corporation
> + */
> +
> +#ifndef INTEL_RPS_TYPES_H
> +#define INTEL_RPS_TYPES_H
> +
> +#include <linux/atomic.h>
> +#include <linux/ktime.h>
> +#include <linux/mutex.h>
> +#include <linux/types.h>
> +#include <linux/workqueue.h>
> +
> +struct intel_ips {
> + u64 last_count1;
> + unsigned long last_time1;
> + unsigned long chipset_power;
> + u64 last_count2;
> + u64 last_time2;
> + unsigned long gfx_power;
> + u8 corr;
> +
> + int c, m;
> +};
> +
> +struct intel_rps_ei {
> + ktime_t ktime;
> + u32 render_c0;
> + u32 media_c0;
> +};
> +
> +struct intel_rps {
> + struct mutex lock; /* protects enabling and the worker */
> +
> + /*
> + * work, interrupts_enabled and pm_iir are protected by
> + * dev_priv->irq_lock
> + */
> + struct work_struct work;
> + bool enabled;
> + bool active;
> + u32 pm_iir;
> +
> + /* PM interrupt bits that should never be masked */
> + u32 pm_intrmsk_mbz;
> + u32 pm_events;
> +
> + /* Frequencies are stored in potentially platform dependent multiples.
> + * In other words, *_freq needs to be multiplied by X to be interesting.
> + * Soft limits are those which are used for the dynamic reclocking done
> + * by the driver (raise frequencies under heavy loads, and lower for
> + * lighter loads). Hard limits are those imposed by the hardware.
> + *
> + * A distinction is made for overclocking, which is never enabled by
> + * default, and is considered to be above the hard limit if it's
> + * possible at all.
> + */
> + u8 cur_freq; /* Current frequency (cached, may not == HW) */
> + u8 last_freq; /* Last swqreq frequency */
> + u8 min_freq_softlimit; /* Minimum frequency permitted by the driver */
> + u8 max_freq_softlimit; /* Max frequency permitted by the driver */
> + u8 max_freq; /* Maximum frequency, RP0 if not overclocking */
> + u8 min_freq; /* AKA RPn. Minimum frequency */
> + u8 boost_freq; /* Frequency to request when wait boosting */
> + u8 idle_freq; /* Frequency to request when we are idle */
> + u8 efficient_freq; /* AKA RPe. Pre-determined balanced frequency */
> + u8 rp1_freq; /* "less than" RP0 power/freqency */
> + u8 rp0_freq; /* Non-overclocked max frequency. */
> + u16 gpll_ref_freq; /* vlv/chv GPLL reference frequency */
> +
> + int last_adj;
> +
> + struct {
> + struct mutex mutex;
> +
> + enum { LOW_POWER, BETWEEN, HIGH_POWER } mode;
> + unsigned int interactive;
> +
> + u8 up_threshold; /* Current %busy required to uplock */
> + u8 down_threshold; /* Current %busy required to downclock */
> + } power;
> +
> + atomic_t num_waiters;
> + atomic_t boosts;
> +
> + /* manual wa residency calculations */
> + struct intel_rps_ei ei;
> + struct intel_ips ips;
> +};
> +
> +#endif /* INTEL_RPS_TYPES_H */
> diff --git a/drivers/gpu/drm/i915/gt/selftest_llc.c b/drivers/gpu/drm/i915/gt/selftest_llc.c
> index a7057785e420..fd3770e48ac7 100644
> --- a/drivers/gpu/drm/i915/gt/selftest_llc.c
> +++ b/drivers/gpu/drm/i915/gt/selftest_llc.c
> @@ -6,6 +6,7 @@
>
> #include "intel_pm.h" /* intel_gpu_freq() */
> #include "selftest_llc.h"
> +#include "intel_rps.h"
>
> static int gen6_verify_ring_freq(struct intel_llc *llc)
> {
> @@ -25,6 +26,8 @@ static int gen6_verify_ring_freq(struct intel_llc *llc)
> for (gpu_freq = consts.min_gpu_freq;
> gpu_freq <= consts.max_gpu_freq;
> gpu_freq++) {
> + struct intel_rps *rps = &llc_to_gt(llc)->rps;
> +
> unsigned int ia_freq, ring_freq, found;
> u32 val;
>
> @@ -44,7 +47,7 @@ static int gen6_verify_ring_freq(struct intel_llc *llc)
> if (found != ia_freq) {
> pr_err("Min freq table(%d/[%d, %d]):%dMHz did not match expected CPU freq, found %d, expected %d\n",
> gpu_freq, consts.min_gpu_freq, consts.max_gpu_freq,
> - intel_gpu_freq(i915, gpu_freq * (INTEL_GEN(i915) >= 9 ? GEN9_FREQ_SCALER : 1)),
> + intel_gpu_freq(rps, gpu_freq * (INTEL_GEN(i915) >= 9 ? GEN9_FREQ_SCALER : 1)),
> found, ia_freq);
> err = -EINVAL;
> break;
> @@ -54,7 +57,7 @@ static int gen6_verify_ring_freq(struct intel_llc *llc)
> if (found != ring_freq) {
> pr_err("Min freq table(%d/[%d, %d]):%dMHz did not match expected ring freq, found %d, expected %d\n",
> gpu_freq, consts.min_gpu_freq, consts.max_gpu_freq,
> - intel_gpu_freq(i915, gpu_freq * (INTEL_GEN(i915) >= 9 ? GEN9_FREQ_SCALER : 1)),
> + intel_gpu_freq(rps, gpu_freq * (INTEL_GEN(i915) >= 9 ? GEN9_FREQ_SCALER : 1)),
> found, ring_freq);
> err = -EINVAL;
> break;
> diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
> index 009e54a3764f..97b858ce7682 100644
> --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
> +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
> @@ -1010,7 +1010,7 @@ void intel_guc_submission_fini(struct intel_guc *guc)
>
> static void guc_interrupts_capture(struct intel_gt *gt)
> {
> - struct intel_rps *rps = &gt->i915->gt_pm.rps;
> + struct intel_rps *rps = &gt->rps;
> struct intel_uncore *uncore = gt->uncore;
> struct intel_engine_cs *engine;
> enum intel_engine_id id;
> @@ -1056,7 +1056,7 @@ static void guc_interrupts_capture(struct intel_gt *gt)
>
> static void guc_interrupts_release(struct intel_gt *gt)
> {
> - struct intel_rps *rps = &gt->i915->gt_pm.rps;
> + struct intel_rps *rps = &gt->rps;
> struct intel_uncore *uncore = gt->uncore;
> struct intel_engine_cs *engine;
> enum intel_engine_id id;
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index 16211430eb78..22962373723b 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -44,6 +44,7 @@
> #include "gt/intel_gt_requests.h"
> #include "gt/intel_reset.h"
> #include "gt/intel_rc6.h"
> +#include "gt/intel_rps.h"
> #include "gt/uc/intel_guc_submission.h"
>
> #include "i915_debugfs.h"
> @@ -791,7 +792,7 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
> {
> struct drm_i915_private *dev_priv = node_to_i915(m->private);
> struct intel_uncore *uncore = &dev_priv->uncore;
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> + struct intel_rps *rps = &dev_priv->gt.rps;
> intel_wakeref_t wakeref;
> int ret = 0;
>
> @@ -827,23 +828,23 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
> seq_printf(m, "DDR freq: %d MHz\n", dev_priv->mem_freq);
>
> seq_printf(m, "actual GPU freq: %d MHz\n",
> - intel_gpu_freq(dev_priv, (freq_sts >> 8) & 0xff));
> + intel_gpu_freq(rps, (freq_sts >> 8) & 0xff));
>
> seq_printf(m, "current GPU freq: %d MHz\n",
> - intel_gpu_freq(dev_priv, rps->cur_freq));
> + intel_gpu_freq(rps, rps->cur_freq));
>
> seq_printf(m, "max GPU freq: %d MHz\n",
> - intel_gpu_freq(dev_priv, rps->max_freq));
> + intel_gpu_freq(rps, rps->max_freq));
>
> seq_printf(m, "min GPU freq: %d MHz\n",
> - intel_gpu_freq(dev_priv, rps->min_freq));
> + intel_gpu_freq(rps, rps->min_freq));
>
> seq_printf(m, "idle GPU freq: %d MHz\n",
> - intel_gpu_freq(dev_priv, rps->idle_freq));
> + intel_gpu_freq(rps, rps->idle_freq));
>
> seq_printf(m,
> "efficient (RPe) frequency: %d MHz\n",
> - intel_gpu_freq(dev_priv, rps->efficient_freq));
> + intel_gpu_freq(rps, rps->efficient_freq));
> } else if (INTEL_GEN(dev_priv) >= 6) {
> u32 rp_state_limits;
> u32 gt_perf_status;
> @@ -877,7 +878,7 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
> else
> reqf >>= 25;
> }
> - reqf = intel_gpu_freq(dev_priv, reqf);
> + reqf = intel_gpu_freq(rps, reqf);
>
> rpmodectl = I915_READ(GEN6_RP_CONTROL);
> rpinclimit = I915_READ(GEN6_RP_UP_THRESHOLD);
> @@ -890,8 +891,7 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
> rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI) & GEN6_CURIAVG_MASK;
> rpcurdown = I915_READ(GEN6_RP_CUR_DOWN) & GEN6_CURBSYTAVG_MASK;
> rpprevdown = I915_READ(GEN6_RP_PREV_DOWN) & GEN6_CURBSYTAVG_MASK;
> - cagf = intel_gpu_freq(dev_priv,
> - intel_get_cagf(dev_priv, rpstat));
> + cagf = intel_gpu_freq(rps, intel_get_cagf(rps, rpstat));
>
> intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
>
> @@ -968,37 +968,37 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
> max_freq *= (IS_GEN9_BC(dev_priv) ||
> INTEL_GEN(dev_priv) >= 10 ? GEN9_FREQ_SCALER : 1);
> seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
> - intel_gpu_freq(dev_priv, max_freq));
> + intel_gpu_freq(rps, max_freq));
>
> max_freq = (rp_state_cap & 0xff00) >> 8;
> max_freq *= (IS_GEN9_BC(dev_priv) ||
> INTEL_GEN(dev_priv) >= 10 ? GEN9_FREQ_SCALER : 1);
> seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
> - intel_gpu_freq(dev_priv, max_freq));
> + intel_gpu_freq(rps, max_freq));
>
> max_freq = (IS_GEN9_LP(dev_priv) ? rp_state_cap >> 16 :
> rp_state_cap >> 0) & 0xff;
> max_freq *= (IS_GEN9_BC(dev_priv) ||
> INTEL_GEN(dev_priv) >= 10 ? GEN9_FREQ_SCALER : 1);
> seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
> - intel_gpu_freq(dev_priv, max_freq));
> + intel_gpu_freq(rps, max_freq));
> seq_printf(m, "Max overclocked frequency: %dMHz\n",
> - intel_gpu_freq(dev_priv, rps->max_freq));
> + intel_gpu_freq(rps, rps->max_freq));
>
> seq_printf(m, "Current freq: %d MHz\n",
> - intel_gpu_freq(dev_priv, rps->cur_freq));
> + 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(dev_priv, rps->idle_freq));
> + intel_gpu_freq(rps, rps->idle_freq));
> seq_printf(m, "Min freq: %d MHz\n",
> - intel_gpu_freq(dev_priv, rps->min_freq));
> + intel_gpu_freq(rps, rps->min_freq));
> seq_printf(m, "Boost freq: %d MHz\n",
> - intel_gpu_freq(dev_priv, rps->boost_freq));
> + intel_gpu_freq(rps, rps->boost_freq));
> seq_printf(m, "Max freq: %d MHz\n",
> - intel_gpu_freq(dev_priv, rps->max_freq));
> + intel_gpu_freq(rps, rps->max_freq));
> seq_printf(m,
> "efficient (RPe) frequency: %d MHz\n",
> - intel_gpu_freq(dev_priv, rps->efficient_freq));
> + intel_gpu_freq(rps, rps->efficient_freq));
> } else {
> seq_puts(m, "no P-state info available\n");
> }
> @@ -1461,7 +1461,7 @@ static int i915_sr_status(struct seq_file *m, void *unused)
> static int i915_ring_freq_table(struct seq_file *m, void *unused)
> {
> struct drm_i915_private *dev_priv = node_to_i915(m->private);
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> + struct intel_rps *rps = &dev_priv->gt.rps;
> unsigned int max_gpu_freq, min_gpu_freq;
> intel_wakeref_t wakeref;
> int gpu_freq, ia_freq;
> @@ -1486,10 +1486,11 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
> 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(dev_priv, (gpu_freq *
> - (IS_GEN9_BC(dev_priv) ||
> - INTEL_GEN(dev_priv) >= 10 ?
> - GEN9_FREQ_SCALER : 1))),
> + intel_gpu_freq(rps,
> + (gpu_freq *
> + (IS_GEN9_BC(dev_priv) ||
> + INTEL_GEN(dev_priv) >= 10 ?
> + GEN9_FREQ_SCALER : 1))),
> ((ia_freq >> 0) & 0xff) * 100,
> ((ia_freq >> 8) & 0xff) * 100);
> }
> @@ -1717,7 +1718,7 @@ static const char *rps_power_to_str(unsigned int power)
> static int i915_rps_boost_info(struct seq_file *m, void *data)
> {
> struct drm_i915_private *dev_priv = node_to_i915(m->private);
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> + struct intel_rps *rps = &dev_priv->gt.rps;
> u32 act_freq = rps->cur_freq;
> intel_wakeref_t wakeref;
>
> @@ -1729,7 +1730,7 @@ static int i915_rps_boost_info(struct seq_file *m, void *data)
> vlv_punit_put(dev_priv);
> act_freq = (act_freq >> 8) & 0xff;
> } else {
> - act_freq = intel_get_cagf(dev_priv,
> + act_freq = intel_get_cagf(rps,
> I915_READ(GEN6_RPSTAT1));
> }
> }
> @@ -1740,17 +1741,17 @@ static int i915_rps_boost_info(struct seq_file *m, void *data)
> 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(dev_priv, rps->cur_freq),
> - intel_gpu_freq(dev_priv, act_freq));
> + intel_gpu_freq(rps, rps->cur_freq),
> + intel_gpu_freq(rps, act_freq));
> seq_printf(m, " min hard:%d, soft:%d; max soft:%d, hard:%d\n",
> - intel_gpu_freq(dev_priv, rps->min_freq),
> - intel_gpu_freq(dev_priv, rps->min_freq_softlimit),
> - intel_gpu_freq(dev_priv, rps->max_freq_softlimit),
> - intel_gpu_freq(dev_priv, rps->max_freq));
> + 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(dev_priv, rps->idle_freq),
> - intel_gpu_freq(dev_priv, rps->efficient_freq),
> - intel_gpu_freq(dev_priv, rps->boost_freq));
> + 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));
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index 5138d1eed306..78ac08db48a3 100644
> --- a/drivers/gpu/drm/i915/i915_drv.c
> +++ b/drivers/gpu/drm/i915/i915_drv.c
> @@ -1841,6 +1841,8 @@ static int i915_drm_resume(struct drm_device *dev)
>
> intel_dp_mst_resume(dev_priv);
>
> + intel_gt_pm_enable(&dev_priv->gt);
> +
> intel_display_resume(dev);
>
> drm_kms_helper_poll_enable(dev);
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 8882c0908c3b..eb5460290811 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -543,94 +543,6 @@ struct i915_suspend_saved_registers {
>
> struct vlv_s0ix_state;
>
> -struct intel_rps_ei {
> - ktime_t ktime;
> - u32 render_c0;
> - u32 media_c0;
> -};
> -
> -struct intel_rps {
> - struct mutex lock; /* protects enabling and the worker */
> -
> - /*
> - * work, interrupts_enabled and pm_iir are protected by
> - * dev_priv->irq_lock
> - */
> - struct work_struct work;
> - bool interrupts_enabled;
> - u32 pm_iir;
> -
> - /* PM interrupt bits that should never be masked */
> - u32 pm_intrmsk_mbz;
> -
> - /* Frequencies are stored in potentially platform dependent multiples.
> - * In other words, *_freq needs to be multiplied by X to be interesting.
> - * Soft limits are those which are used for the dynamic reclocking done
> - * by the driver (raise frequencies under heavy loads, and lower for
> - * lighter loads). Hard limits are those imposed by the hardware.
> - *
> - * A distinction is made for overclocking, which is never enabled by
> - * default, and is considered to be above the hard limit if it's
> - * possible at all.
> - */
> - u8 cur_freq; /* Current frequency (cached, may not == HW) */
> - u8 min_freq_softlimit; /* Minimum frequency permitted by the driver */
> - u8 max_freq_softlimit; /* Max frequency permitted by the driver */
> - u8 max_freq; /* Maximum frequency, RP0 if not overclocking */
> - u8 min_freq; /* AKA RPn. Minimum frequency */
> - u8 boost_freq; /* Frequency to request when wait boosting */
> - u8 idle_freq; /* Frequency to request when we are idle */
> - u8 efficient_freq; /* AKA RPe. Pre-determined balanced frequency */
> - u8 rp1_freq; /* "less than" RP0 power/freqency */
> - u8 rp0_freq; /* Non-overclocked max frequency. */
> - u16 gpll_ref_freq; /* vlv/chv GPLL reference frequency */
> -
> - int last_adj;
> -
> - struct {
> - struct mutex mutex;
> -
> - enum { LOW_POWER, BETWEEN, HIGH_POWER } mode;
> - unsigned int interactive;
> -
> - u8 up_threshold; /* Current %busy required to uplock */
> - u8 down_threshold; /* Current %busy required to downclock */
> - } power;
> -
> - bool enabled;
> - atomic_t num_waiters;
> - atomic_t boosts;
> -
> - /* manual wa residency calculations */
> - struct intel_rps_ei ei;
> -};
> -
> -struct intel_gen6_power_mgmt {
> - struct intel_rps rps;
> -};
> -
> -/* defined intel_pm.c */
> -extern spinlock_t mchdev_lock;
> -
> -struct intel_ilk_power_mgmt {
> - u8 cur_delay;
> - u8 min_delay;
> - u8 max_delay;
> - u8 fmax;
> - u8 fstart;
> -
> - u64 last_count1;
> - unsigned long last_time1;
> - unsigned long chipset_power;
> - u64 last_count2;
> - u64 last_time2;
> - unsigned long gfx_power;
> - u8 corr;
> -
> - int c_m;
> - int r_t;
> -};
> -
> #define MAX_L3_SLICES 2
> struct intel_l3_parity {
> u32 *remap_info[MAX_L3_SLICES];
> @@ -1067,7 +979,6 @@ struct drm_i915_private {
> u32 irq_mask;
> u32 de_irq_mask[I915_MAX_PIPES];
> };
> - u32 pm_rps_events;
> u32 pipestat_irq_mask[I915_MAX_PIPES];
>
> struct i915_hotplug hotplug;
> @@ -1202,13 +1113,6 @@ struct drm_i915_private {
> */
> u32 edram_size_mb;
>
> - /* gen6+ GT PM state */
> - struct intel_gen6_power_mgmt gt_pm;
> -
> - /* ilk-only ips/rps state. Everything in here is protected by the global
> - * mchdev_lock in intel_pm.c */
> - struct intel_ilk_power_mgmt ips;
> -
> struct i915_power_domains power_domains;
>
> struct i915_psr psr;
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index b882988056bd..eab1709d1897 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -52,6 +52,7 @@
> #include "gt/intel_mocs.h"
> #include "gt/intel_reset.h"
> #include "gt/intel_renderstate.h"
> +#include "gt/intel_rps.h"
> #include "gt/intel_workarounds.h"
>
> #include "i915_drv.h"
> @@ -1272,8 +1273,6 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
> goto err_context;
> }
>
> - intel_init_gt_powersave(dev_priv);
> -
> intel_uc_init(&dev_priv->gt.uc);
>
> ret = intel_gt_init_hw(&dev_priv->gt);
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index 572a5c37cc61..598924b3c556 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -45,6 +45,7 @@
> #include "gt/intel_gt.h"
> #include "gt/intel_gt_irq.h"
> #include "gt/intel_gt_pm_irq.h"
> +#include "gt/intel_rps.h"
>
> #include "i915_drv.h"
> #include "i915_irq.h"
> @@ -327,87 +328,6 @@ static i915_reg_t gen6_pm_iir(struct drm_i915_private *dev_priv)
> return INTEL_GEN(dev_priv) >= 8 ? GEN8_GT_IIR(2) : GEN6_PMIIR;
> }
>
> -void gen11_reset_rps_interrupts(struct drm_i915_private *dev_priv)
> -{
> - struct intel_gt *gt = &dev_priv->gt;
> -
> - spin_lock_irq(&gt->irq_lock);
> -
> - while (gen11_gt_reset_one_iir(gt, 0, GEN11_GTPM))
> - ;
> -
> - dev_priv->gt_pm.rps.pm_iir = 0;
> -
> - spin_unlock_irq(&gt->irq_lock);
> -}
> -
> -void gen6_reset_rps_interrupts(struct drm_i915_private *dev_priv)
> -{
> - struct intel_gt *gt = &dev_priv->gt;
> -
> - spin_lock_irq(&gt->irq_lock);
> - gen6_gt_pm_reset_iir(gt, GEN6_PM_RPS_EVENTS);
> - dev_priv->gt_pm.rps.pm_iir = 0;
> - spin_unlock_irq(&gt->irq_lock);
> -}
> -
> -void gen6_enable_rps_interrupts(struct drm_i915_private *dev_priv)
> -{
> - struct intel_gt *gt = &dev_priv->gt;
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> -
> - if (READ_ONCE(rps->interrupts_enabled))
> - return;
> -
> - spin_lock_irq(&gt->irq_lock);
> - WARN_ON_ONCE(rps->pm_iir);
> -
> - if (INTEL_GEN(dev_priv) >= 11)
> - WARN_ON_ONCE(gen11_gt_reset_one_iir(gt, 0, GEN11_GTPM));
> - else
> - WARN_ON_ONCE(I915_READ(gen6_pm_iir(dev_priv)) & dev_priv->pm_rps_events);
> -
> - rps->interrupts_enabled = true;
> - gen6_gt_pm_enable_irq(gt, dev_priv->pm_rps_events);
> -
> - spin_unlock_irq(&gt->irq_lock);
> -}
> -
> -u32 gen6_sanitize_rps_pm_mask(const struct drm_i915_private *i915, u32 mask)
> -{
> - return mask & ~i915->gt_pm.rps.pm_intrmsk_mbz;
> -}
> -
> -void gen6_disable_rps_interrupts(struct drm_i915_private *dev_priv)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - struct intel_gt *gt = &dev_priv->gt;
> -
> - if (!READ_ONCE(rps->interrupts_enabled))
> - return;
> -
> - spin_lock_irq(&gt->irq_lock);
> - rps->interrupts_enabled = false;
> -
> - I915_WRITE(GEN6_PMINTRMSK, gen6_sanitize_rps_pm_mask(dev_priv, ~0u));
> -
> - gen6_gt_pm_disable_irq(gt, GEN6_PM_RPS_EVENTS);
> -
> - spin_unlock_irq(&gt->irq_lock);
> - intel_synchronize_irq(dev_priv);
> -
> - /* Now that we will not be generating any more work, flush any
> - * outstanding tasks. As we are called on the RPS idle path,
> - * we will reset the GPU to minimum frequencies, so the current
> - * state of the worker can be discarded.
> - */
> - cancel_work_sync(&rps->work);
> - if (INTEL_GEN(dev_priv) >= 11)
> - gen11_reset_rps_interrupts(dev_priv);
> - else
> - gen6_reset_rps_interrupts(dev_priv);
> -}
> -
> void gen9_reset_guc_interrupts(struct intel_guc *guc)
> {
> struct intel_gt *gt = guc_to_gt(guc);
> @@ -1065,199 +985,6 @@ int intel_get_crtc_scanline(struct intel_crtc *crtc)
> return position;
> }
>
> -static void ironlake_rps_change_irq_handler(struct drm_i915_private *dev_priv)
> -{
> - struct intel_uncore *uncore = &dev_priv->uncore;
> - u32 busy_up, busy_down, max_avg, min_avg;
> - u8 new_delay;
> -
> - spin_lock(&mchdev_lock);
> -
> - intel_uncore_write16(uncore,
> - MEMINTRSTS,
> - intel_uncore_read(uncore, MEMINTRSTS));
> -
> - new_delay = dev_priv->ips.cur_delay;
> -
> - intel_uncore_write16(uncore, MEMINTRSTS, MEMINT_EVAL_CHG);
> - busy_up = intel_uncore_read(uncore, RCPREVBSYTUPAVG);
> - busy_down = intel_uncore_read(uncore, RCPREVBSYTDNAVG);
> - max_avg = intel_uncore_read(uncore, RCBMAXAVG);
> - min_avg = intel_uncore_read(uncore, RCBMINAVG);
> -
> - /* Handle RCS change request from hw */
> - if (busy_up > max_avg) {
> - if (dev_priv->ips.cur_delay != dev_priv->ips.max_delay)
> - new_delay = dev_priv->ips.cur_delay - 1;
> - if (new_delay < dev_priv->ips.max_delay)
> - new_delay = dev_priv->ips.max_delay;
> - } else if (busy_down < min_avg) {
> - if (dev_priv->ips.cur_delay != dev_priv->ips.min_delay)
> - new_delay = dev_priv->ips.cur_delay + 1;
> - if (new_delay > dev_priv->ips.min_delay)
> - new_delay = dev_priv->ips.min_delay;
> - }
> -
> - if (ironlake_set_drps(dev_priv, new_delay))
> - dev_priv->ips.cur_delay = new_delay;
> -
> - spin_unlock(&mchdev_lock);
> -
> - return;
> -}
> -
> -static void vlv_c0_read(struct drm_i915_private *dev_priv,
> - struct intel_rps_ei *ei)
> -{
> - ei->ktime = ktime_get_raw();
> - ei->render_c0 = I915_READ(VLV_RENDER_C0_COUNT);
> - ei->media_c0 = I915_READ(VLV_MEDIA_C0_COUNT);
> -}
> -
> -void gen6_rps_reset_ei(struct drm_i915_private *dev_priv)
> -{
> - memset(&dev_priv->gt_pm.rps.ei, 0, sizeof(dev_priv->gt_pm.rps.ei));
> -}
> -
> -static u32 vlv_wa_c0_ei(struct drm_i915_private *dev_priv, u32 pm_iir)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - const struct intel_rps_ei *prev = &rps->ei;
> - struct intel_rps_ei now;
> - u32 events = 0;
> -
> - if ((pm_iir & GEN6_PM_RP_UP_EI_EXPIRED) == 0)
> - return 0;
> -
> - vlv_c0_read(dev_priv, &now);
> -
> - if (prev->ktime) {
> - u64 time, c0;
> - u32 render, media;
> -
> - time = ktime_us_delta(now.ktime, prev->ktime);
> -
> - time *= dev_priv->czclk_freq;
> -
> - /* Workload can be split between render + media,
> - * e.g. SwapBuffers being blitted in X after being rendered in
> - * mesa. To account for this we need to combine both engines
> - * into our activity counter.
> - */
> - render = now.render_c0 - prev->render_c0;
> - media = now.media_c0 - prev->media_c0;
> - c0 = max(render, media);
> - c0 *= 1000 * 100 << 8; /* to usecs and scale to threshold% */
> -
> - if (c0 > time * rps->power.up_threshold)
> - events = GEN6_PM_RP_UP_THRESHOLD;
> - else if (c0 < time * rps->power.down_threshold)
> - events = GEN6_PM_RP_DOWN_THRESHOLD;
> - }
> -
> - rps->ei = now;
> - return events;
> -}
> -
> -static void gen6_pm_rps_work(struct work_struct *work)
> -{
> - struct drm_i915_private *dev_priv =
> - container_of(work, struct drm_i915_private, gt_pm.rps.work);
> - struct intel_gt *gt = &dev_priv->gt;
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - bool client_boost = false;
> - int new_delay, adj, min, max;
> - u32 pm_iir = 0;
> -
> - spin_lock_irq(&gt->irq_lock);
> - if (rps->interrupts_enabled) {
> - pm_iir = fetch_and_zero(&rps->pm_iir);
> - client_boost = atomic_read(&rps->num_waiters);
> - }
> - spin_unlock_irq(&gt->irq_lock);
> -
> - /* Make sure we didn't queue anything we're not going to process. */
> - WARN_ON(pm_iir & ~dev_priv->pm_rps_events);
> - if ((pm_iir & dev_priv->pm_rps_events) == 0 && !client_boost)
> - goto out;
> -
> - mutex_lock(&rps->lock);
> -
> - pm_iir |= vlv_wa_c0_ei(dev_priv, pm_iir);
> -
> - adj = rps->last_adj;
> - new_delay = rps->cur_freq;
> - min = rps->min_freq_softlimit;
> - max = rps->max_freq_softlimit;
> - if (client_boost)
> - max = rps->max_freq;
> - if (client_boost && new_delay < rps->boost_freq) {
> - new_delay = rps->boost_freq;
> - adj = 0;
> - } else if (pm_iir & GEN6_PM_RP_UP_THRESHOLD) {
> - if (adj > 0)
> - adj *= 2;
> - else /* CHV needs even encode values */
> - adj = IS_CHERRYVIEW(dev_priv) ? 2 : 1;
> -
> - if (new_delay >= rps->max_freq_softlimit)
> - adj = 0;
> - } else if (client_boost) {
> - adj = 0;
> - } else if (pm_iir & GEN6_PM_RP_DOWN_TIMEOUT) {
> - if (rps->cur_freq > rps->efficient_freq)
> - new_delay = rps->efficient_freq;
> - else if (rps->cur_freq > rps->min_freq_softlimit)
> - new_delay = rps->min_freq_softlimit;
> - adj = 0;
> - } else if (pm_iir & GEN6_PM_RP_DOWN_THRESHOLD) {
> - if (adj < 0)
> - adj *= 2;
> - else /* CHV needs even encode values */
> - adj = IS_CHERRYVIEW(dev_priv) ? -2 : -1;
> -
> - if (new_delay <= rps->min_freq_softlimit)
> - adj = 0;
> - } else { /* unknown event */
> - adj = 0;
> - }
> -
> - rps->last_adj = adj;
> -
> - /*
> - * Limit deboosting and boosting to keep ourselves at the extremes
> - * when in the respective power modes (i.e. slowly decrease frequencies
> - * while in the HIGH_POWER zone and slowly increase frequencies while
> - * in the LOW_POWER zone). On idle, we will hit the timeout and drop
> - * to the next level quickly, and conversely if busy we expect to
> - * hit a waitboost and rapidly switch into max power.
> - */
> - if ((adj < 0 && rps->power.mode == HIGH_POWER) ||
> - (adj > 0 && rps->power.mode == LOW_POWER))
> - rps->last_adj = 0;
> -
> - /* sysfs frequency interfaces may have snuck in while servicing the
> - * interrupt
> - */
> - new_delay += adj;
> - new_delay = clamp_t(int, new_delay, min, max);
> -
> - if (intel_set_rps(dev_priv, new_delay)) {
> - DRM_DEBUG_DRIVER("Failed to set new GPU frequency\n");
> - rps->last_adj = 0;
> - }
> -
> - mutex_unlock(&rps->lock);
> -
> -out:
> - /* Make sure not to corrupt PMIMR state used by ringbuffer on GEN6 */
> - spin_lock_irq(&gt->irq_lock);
> - if (rps->interrupts_enabled)
> - gen6_gt_pm_unmask_irq(gt, dev_priv->pm_rps_events);
> - spin_unlock_irq(&gt->irq_lock);
> -}
> -
> -
> /**
> * ivybridge_parity_work - Workqueue called when a parity error interrupt
> * occurred.
> @@ -1631,54 +1358,6 @@ static void i9xx_pipe_crc_irq_handler(struct drm_i915_private *dev_priv,
> res1, res2);
> }
>
> -/* The RPS events need forcewake, so we add them to a work queue and mask their
> - * IMR bits until the work is done. Other interrupts can be processed without
> - * the work queue. */
> -void gen11_rps_irq_handler(struct intel_gt *gt, u32 pm_iir)
> -{
> - struct drm_i915_private *i915 = gt->i915;
> - struct intel_rps *rps = &i915->gt_pm.rps;
> - const u32 events = i915->pm_rps_events & pm_iir;
> -
> - lockdep_assert_held(&gt->irq_lock);
> -
> - if (unlikely(!events))
> - return;
> -
> - gen6_gt_pm_mask_irq(gt, events);
> -
> - if (!rps->interrupts_enabled)
> - return;
> -
> - rps->pm_iir |= events;
> - schedule_work(&rps->work);
> -}
> -
> -void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - struct intel_gt *gt = &dev_priv->gt;
> -
> - if (pm_iir & dev_priv->pm_rps_events) {
> - spin_lock(&gt->irq_lock);
> - gen6_gt_pm_mask_irq(gt, pm_iir & dev_priv->pm_rps_events);
> - if (rps->interrupts_enabled) {
> - rps->pm_iir |= pm_iir & dev_priv->pm_rps_events;
> - schedule_work(&rps->work);
> - }
> - spin_unlock(&gt->irq_lock);
> - }
> -
> - if (INTEL_GEN(dev_priv) >= 8)
> - return;
> -
> - if (pm_iir & PM_VEBOX_USER_INTERRUPT)
> - intel_engine_breadcrumbs_irq(dev_priv->engine[VECS0]);
> -
> - if (pm_iir & PM_VEBOX_CS_ERROR_INTERRUPT)
> - DRM_DEBUG("Command parser error, pm_iir 0x%08x\n", pm_iir);
> -}
> -
> static void i9xx_pipestat_irq_reset(struct drm_i915_private *dev_priv)
> {
> enum pipe pipe;
> @@ -1989,7 +1668,7 @@ static irqreturn_t valleyview_irq_handler(int irq, void *arg)
> if (gt_iir)
> gen6_gt_irq_handler(&dev_priv->gt, gt_iir);
> if (pm_iir)
> - gen6_rps_irq_handler(dev_priv, pm_iir);
> + gen6_rps_irq_handler(&dev_priv->gt.rps, pm_iir);
>
> if (hotplug_status)
> i9xx_hpd_irq_handler(dev_priv, hotplug_status);
> @@ -2393,7 +2072,7 @@ static void ilk_display_irq_handler(struct drm_i915_private *dev_priv,
> }
>
> if (IS_GEN(dev_priv, 5) && de_iir & DE_PCU_EVENT)
> - ironlake_rps_change_irq_handler(dev_priv);
> + gen5_rps_irq_handler(&dev_priv->gt.rps);
> }
>
> static void ivb_display_irq_handler(struct drm_i915_private *dev_priv,
> @@ -2498,7 +2177,7 @@ static irqreturn_t ironlake_irq_handler(int irq, void *arg)
> if (pm_iir) {
> I915_WRITE(GEN6_PMIIR, pm_iir);
> ret = IRQ_HANDLED;
> - gen6_rps_irq_handler(dev_priv, pm_iir);
> + gen6_rps_irq_handler(&dev_priv->gt.rps, pm_iir);
> }
> }
>
> @@ -4270,13 +3949,10 @@ static irqreturn_t i965_irq_handler(int irq, void *arg)
> void intel_irq_init(struct drm_i915_private *dev_priv)
> {
> struct drm_device *dev = &dev_priv->drm;
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> int i;
>
> intel_hpd_init_work(dev_priv);
>
> - INIT_WORK(&rps->work, gen6_pm_rps_work);
> -
> INIT_WORK(&dev_priv->l3_parity.error_work, ivybridge_parity_work);
> for (i = 0; i < MAX_L3_SLICES; ++i)
> dev_priv->l3_parity.remap_info[i] = NULL;
> @@ -4285,33 +3961,6 @@ void intel_irq_init(struct drm_i915_private *dev_priv)
> if (HAS_GT_UC(dev_priv) && INTEL_GEN(dev_priv) < 11)
> dev_priv->gt.pm_guc_events = GUC_INTR_GUC2HOST << 16;
>
> - /* Let's track the enabled rps events */
> - if (IS_VALLEYVIEW(dev_priv))
> - /* WaGsvRC0ResidencyMethod:vlv */
> - dev_priv->pm_rps_events = GEN6_PM_RP_UP_EI_EXPIRED;
> - else
> - dev_priv->pm_rps_events = (GEN6_PM_RP_UP_THRESHOLD |
> - GEN6_PM_RP_DOWN_THRESHOLD |
> - GEN6_PM_RP_DOWN_TIMEOUT);
> -
> - /* We share the register with other engine */
> - if (INTEL_GEN(dev_priv) > 9)
> - GEM_WARN_ON(dev_priv->pm_rps_events & 0xffff0000);
> -
> - rps->pm_intrmsk_mbz = 0;
> -
> - /*
> - * SNB,IVB,HSW can while VLV,CHV may hard hang on looping batchbuffer
> - * if GEN6_PM_UP_EI_EXPIRED is masked.
> - *
> - * TODO: verify if this can be reproduced on VLV,CHV.
> - */
> - if (INTEL_GEN(dev_priv) <= 7)
> - rps->pm_intrmsk_mbz |= GEN6_PM_RP_UP_EI_EXPIRED;
> -
> - if (INTEL_GEN(dev_priv) >= 8)
> - rps->pm_intrmsk_mbz |= GEN8_PMINTR_DISABLE_REDIRECT_TO_GUC;
> -
> dev->vblank_disable_immediate = true;
>
> /* Most platforms treat the display irq block as an always-on
> diff --git a/drivers/gpu/drm/i915/i915_irq.h b/drivers/gpu/drm/i915/i915_irq.h
> index 19a3bc019535..d0d91c6e00d7 100644
> --- a/drivers/gpu/drm/i915/i915_irq.h
> +++ b/drivers/gpu/drm/i915/i915_irq.h
> @@ -22,9 +22,6 @@ struct intel_gt;
> struct intel_guc;
> struct intel_uncore;
>
> -void gen11_rps_irq_handler(struct intel_gt *gt, u32 pm_iir);
> -void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir);
> -
> void intel_irq_init(struct drm_i915_private *dev_priv);
> void intel_irq_fini(struct drm_i915_private *dev_priv);
> int intel_irq_install(struct drm_i915_private *dev_priv);
> diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c
> index 85912917c062..266d66b1fb7b 100644
> --- a/drivers/gpu/drm/i915/i915_pmu.c
> +++ b/drivers/gpu/drm/i915/i915_pmu.c
> @@ -12,6 +12,7 @@
> #include "gt/intel_engine_user.h"
> #include "gt/intel_gt_pm.h"
> #include "gt/intel_rc6.h"
> +#include "gt/intel_rps.h"
>
> #include "i915_drv.h"
> #include "i915_pmu.h"
> @@ -358,25 +359,26 @@ frequency_sample(struct intel_gt *gt, unsigned int period_ns)
> struct drm_i915_private *i915 = gt->i915;
> struct intel_uncore *uncore = gt->uncore;
> struct i915_pmu *pmu = &i915->pmu;
> + struct intel_rps *rps = &gt->rps;
>
> if (pmu->enable & config_enabled_mask(I915_PMU_ACTUAL_FREQUENCY)) {
> u32 val;
>
> - val = i915->gt_pm.rps.cur_freq;
> + val = rps->cur_freq;
> if (intel_gt_pm_get_if_awake(gt)) {
> val = intel_uncore_read_notrace(uncore, GEN6_RPSTAT1);
> - val = intel_get_cagf(i915, val);
> + val = intel_get_cagf(rps, val);
> intel_gt_pm_put(gt);
> }
>
> add_sample_mult(&pmu->sample[__I915_SAMPLE_FREQ_ACT],
> - intel_gpu_freq(i915, val),
> + intel_gpu_freq(rps, val),
> period_ns / 1000);
> }
>
> if (pmu->enable & config_enabled_mask(I915_PMU_REQUESTED_FREQUENCY)) {
> add_sample_mult(&pmu->sample[__I915_SAMPLE_FREQ_REQ],
> - intel_gpu_freq(i915, i915->gt_pm.rps.cur_freq),
> + intel_gpu_freq(rps, rps->cur_freq),
> period_ns / 1000);
> }
> }
> diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c
> index 4575f368455d..08ce2eeecf7e 100644
> --- a/drivers/gpu/drm/i915/i915_request.c
> +++ b/drivers/gpu/drm/i915/i915_request.c
> @@ -31,6 +31,7 @@
>
> #include "gem/i915_gem_context.h"
> #include "gt/intel_context.h"
> +#include "gt/intel_rps.h"
>
> #include "i915_active.h"
> #include "i915_drv.h"
> @@ -257,8 +258,8 @@ bool i915_request_retire(struct i915_request *rq)
> if (test_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT, &rq->fence.flags))
> i915_request_cancel_breadcrumb(rq);
> if (i915_request_has_waitboost(rq)) {
> - GEM_BUG_ON(!atomic_read(&rq->i915->gt_pm.rps.num_waiters));
> - atomic_dec(&rq->i915->gt_pm.rps.num_waiters);
> + GEM_BUG_ON(!atomic_read(&rq->engine->gt->rps.num_waiters));
> + atomic_dec(&rq->engine->gt->rps.num_waiters);
> }
> if (!test_bit(I915_FENCE_FLAG_ACTIVE, &rq->fence.flags)) {
> set_bit(I915_FENCE_FLAG_ACTIVE, &rq->fence.flags);
> @@ -1466,7 +1467,7 @@ long i915_request_wait(struct i915_request *rq,
> */
> if (flags & I915_WAIT_PRIORITY) {
> if (!i915_request_started(rq) && INTEL_GEN(rq->i915) >= 6)
> - gen6_rps_boost(rq);
> + intel_rps_boost(rq);
> i915_schedule_bump_priority(rq, I915_PRIORITY_WAIT);
> }
>
> diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
> index bf039b8ba593..65476909d1bf 100644
> --- a/drivers/gpu/drm/i915/i915_sysfs.c
> +++ b/drivers/gpu/drm/i915/i915_sysfs.c
> @@ -31,6 +31,7 @@
> #include <linux/sysfs.h>
>
> #include "gt/intel_rc6.h"
> +#include "gt/intel_rps.h"
>
> #include "i915_drv.h"
> #include "i915_sysfs.h"
> @@ -259,6 +260,7 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
> struct device_attribute *attr, char *buf)
> {
> struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
> + struct intel_rps *rps = &dev_priv->gt.rps;
> intel_wakeref_t wakeref;
> u32 freq;
>
> @@ -271,31 +273,31 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
>
> freq = (freq >> 8) & 0xff;
> } else {
> - freq = intel_get_cagf(dev_priv, I915_READ(GEN6_RPSTAT1));
> + freq = intel_get_cagf(rps, I915_READ(GEN6_RPSTAT1));
> }
>
> intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
>
> - return snprintf(buf, PAGE_SIZE, "%d\n", intel_gpu_freq(dev_priv, freq));
> + return snprintf(buf, PAGE_SIZE, "%d\n", intel_gpu_freq(rps, freq));
> }
>
> static ssize_t gt_cur_freq_mhz_show(struct device *kdev,
> struct device_attribute *attr, char *buf)
> {
> struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
> + struct intel_rps *rps = &dev_priv->gt.rps;
>
> return snprintf(buf, PAGE_SIZE, "%d\n",
> - intel_gpu_freq(dev_priv,
> - dev_priv->gt_pm.rps.cur_freq));
> + intel_gpu_freq(rps, rps->cur_freq));
> }
>
> static ssize_t gt_boost_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
> {
> struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
> + struct intel_rps *rps = &dev_priv->gt.rps;
>
> return snprintf(buf, PAGE_SIZE, "%d\n",
> - intel_gpu_freq(dev_priv,
> - dev_priv->gt_pm.rps.boost_freq));
> + intel_gpu_freq(rps, rps->boost_freq));
> }
>
> static ssize_t gt_boost_freq_mhz_store(struct device *kdev,
> @@ -303,7 +305,7 @@ static ssize_t gt_boost_freq_mhz_store(struct device *kdev,
> const char *buf, size_t count)
> {
> struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> + struct intel_rps *rps = &dev_priv->gt.rps;
> bool boost = false;
> ssize_t ret;
> u32 val;
> @@ -313,7 +315,7 @@ static ssize_t gt_boost_freq_mhz_store(struct device *kdev,
> return ret;
>
> /* Validate against (static) hardware limits */
> - val = intel_freq_opcode(dev_priv, val);
> + val = intel_freq_opcode(rps, val);
> if (val < rps->min_freq || val > rps->max_freq)
> return -EINVAL;
>
> @@ -333,19 +335,19 @@ static ssize_t vlv_rpe_freq_mhz_show(struct device *kdev,
> struct device_attribute *attr, char *buf)
> {
> struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
> + struct intel_rps *rps = &dev_priv->gt.rps;
>
> return snprintf(buf, PAGE_SIZE, "%d\n",
> - intel_gpu_freq(dev_priv,
> - dev_priv->gt_pm.rps.efficient_freq));
> + intel_gpu_freq(rps, rps->efficient_freq));
> }
>
> static ssize_t gt_max_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
> {
> struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
> + struct intel_rps *rps = &dev_priv->gt.rps;
>
> return snprintf(buf, PAGE_SIZE, "%d\n",
> - intel_gpu_freq(dev_priv,
> - dev_priv->gt_pm.rps.max_freq_softlimit));
> + intel_gpu_freq(rps, rps->max_freq_softlimit));
> }
>
> static ssize_t gt_max_freq_mhz_store(struct device *kdev,
> @@ -353,19 +355,17 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
> const char *buf, size_t count)
> {
> struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - intel_wakeref_t wakeref;
> - u32 val;
> + struct intel_rps *rps = &dev_priv->gt.rps;
> ssize_t ret;
> + u32 val;
>
> ret = kstrtou32(buf, 0, &val);
> if (ret)
> return ret;
>
> - wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
> mutex_lock(&rps->lock);
>
> - val = intel_freq_opcode(dev_priv, val);
> + val = intel_freq_opcode(rps, val);
> if (val < rps->min_freq ||
> val > rps->max_freq ||
> val < rps->min_freq_softlimit) {
> @@ -375,7 +375,7 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
>
> if (val > rps->rp0_freq)
> DRM_DEBUG("User requested overclocking to %d\n",
> - intel_gpu_freq(dev_priv, val));
> + intel_gpu_freq(rps, val));
>
> rps->max_freq_softlimit = val;
>
> @@ -383,14 +383,15 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
> rps->min_freq_softlimit,
> rps->max_freq_softlimit);
>
> - /* We still need *_set_rps to process the new max_delay and
> + /*
> + * We still need *_set_rps to process the new max_delay and
> * update the interrupt limits and PMINTRMSK even though
> - * frequency request may be unchanged. */
> - ret = intel_set_rps(dev_priv, val);
> + * frequency request may be unchanged.
> + */
> + intel_rps_set(rps, val);
>
> unlock:
> mutex_unlock(&rps->lock);
> - intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
>
> return ret ?: count;
> }
> @@ -398,10 +399,10 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
> static ssize_t gt_min_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
> {
> struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
> + struct intel_rps *rps = &dev_priv->gt.rps;
>
> return snprintf(buf, PAGE_SIZE, "%d\n",
> - intel_gpu_freq(dev_priv,
> - dev_priv->gt_pm.rps.min_freq_softlimit));
> + intel_gpu_freq(rps, rps->min_freq_softlimit));
> }
>
> static ssize_t gt_min_freq_mhz_store(struct device *kdev,
> @@ -409,19 +410,17 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
> const char *buf, size_t count)
> {
> struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - intel_wakeref_t wakeref;
> - u32 val;
> + struct intel_rps *rps = &dev_priv->gt.rps;
> ssize_t ret;
> + u32 val;
>
> ret = kstrtou32(buf, 0, &val);
> if (ret)
> return ret;
>
> - wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
> mutex_lock(&rps->lock);
>
> - val = intel_freq_opcode(dev_priv, val);
> + val = intel_freq_opcode(rps, val);
> if (val < rps->min_freq ||
> val > rps->max_freq ||
> val > rps->max_freq_softlimit) {
> @@ -435,14 +434,15 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
> rps->min_freq_softlimit,
> rps->max_freq_softlimit);
>
> - /* We still need *_set_rps to process the new min_delay and
> + /*
> + * We still need *_set_rps to process the new min_delay and
> * update the interrupt limits and PMINTRMSK even though
> - * frequency request may be unchanged. */
> - ret = intel_set_rps(dev_priv, val);
> + * frequency request may be unchanged.
> + */
> + intel_rps_set(rps, val);
>
> unlock:
> mutex_unlock(&rps->lock);
> - intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
>
> return ret ?: count;
> }
> @@ -464,15 +464,15 @@ static DEVICE_ATTR(gt_RPn_freq_mhz, S_IRUGO, gt_rp_mhz_show, NULL);
> static ssize_t gt_rp_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
> {
> struct drm_i915_private *dev_priv = kdev_minor_to_i915(kdev);
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> + struct intel_rps *rps = &dev_priv->gt.rps;
> u32 val;
>
> if (attr == &dev_attr_gt_RP0_freq_mhz)
> - val = intel_gpu_freq(dev_priv, rps->rp0_freq);
> + val = intel_gpu_freq(rps, rps->rp0_freq);
> else if (attr == &dev_attr_gt_RP1_freq_mhz)
> - val = intel_gpu_freq(dev_priv, rps->rp1_freq);
> + val = intel_gpu_freq(rps, rps->rp1_freq);
> else if (attr == &dev_attr_gt_RPn_freq_mhz)
> - val = intel_gpu_freq(dev_priv, rps->min_freq);
> + val = intel_gpu_freq(rps, rps->min_freq);
> else
> BUG();
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 362234449087..6741507c74f3 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -197,8 +197,6 @@ static void i915_ironlake_get_mem_freq(struct drm_i915_private *dev_priv)
> break;
> }
>
> - dev_priv->ips.r_t = dev_priv->mem_freq;
> -
> switch (csipll & 0x3ff) {
> case 0x00c:
> dev_priv->fsb_freq = 3200;
> @@ -227,14 +225,6 @@ static void i915_ironlake_get_mem_freq(struct drm_i915_private *dev_priv)
> dev_priv->fsb_freq = 0;
> break;
> }
> -
> - if (dev_priv->fsb_freq == 3200) {
> - dev_priv->ips.c_m = 0;
> - } else if (dev_priv->fsb_freq > 3200 && dev_priv->fsb_freq <= 4800) {
> - dev_priv->ips.c_m = 1;
> - } else {
> - dev_priv->ips.c_m = 2;
> - }
> }
>
> static const struct cxsr_latency cxsr_latency_table[] = {
> @@ -6339,1865 +6329,258 @@ void intel_init_ipc(struct drm_i915_private *dev_priv)
> intel_enable_ipc(dev_priv);
> }
>
> -/*
> - * Lock protecting IPS related data structures
> - */
> -DEFINE_SPINLOCK(mchdev_lock);
> +static const struct cparams {
> + u16 i;
> + u16 t;
> + u16 m;
> + u16 c;
> +} cparams[] = {
> + { 1, 1333, 301, 28664 },
> + { 1, 1066, 294, 24460 },
> + { 1, 800, 294, 25192 },
> + { 0, 1333, 276, 27605 },
> + { 0, 1066, 276, 27605 },
> + { 0, 800, 231, 23784 },
> +};
>
> -bool ironlake_set_drps(struct drm_i915_private *i915, u8 val)
> +static void ibx_init_clock_gating(struct drm_i915_private *dev_priv)
> {
> - struct intel_uncore *uncore = &i915->uncore;
> - u16 rgvswctl;
> -
> - lockdep_assert_held(&mchdev_lock);
> -
> - rgvswctl = intel_uncore_read16(uncore, MEMSWCTL);
> - if (rgvswctl & MEMCTL_CMD_STS) {
> - DRM_DEBUG("gpu busy, RCS change rejected\n");
> - return false; /* still busy with another command */
> - }
> -
> - rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) |
> - (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM;
> - intel_uncore_write16(uncore, MEMSWCTL, rgvswctl);
> - intel_uncore_posting_read16(uncore, MEMSWCTL);
> -
> - rgvswctl |= MEMCTL_CMD_STS;
> - intel_uncore_write16(uncore, MEMSWCTL, rgvswctl);
> -
> - return true;
> + /*
> + * On Ibex Peak and Cougar Point, we need to disable clock
> + * gating for the panel power sequencer or it will fail to
> + * start up when no ports are active.
> + */
> + I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
> }
>
> -static void ironlake_enable_drps(struct drm_i915_private *dev_priv)
> +static void g4x_disable_trickle_feed(struct drm_i915_private *dev_priv)
> {
> - struct intel_uncore *uncore = &dev_priv->uncore;
> - u32 rgvmodectl;
> - u8 fmax, fmin, fstart, vstart;
> -
> - spin_lock_irq(&mchdev_lock);
> -
> - rgvmodectl = intel_uncore_read(uncore, MEMMODECTL);
> -
> - /* Enable temp reporting */
> - intel_uncore_write16(uncore, PMMISC, I915_READ(PMMISC) | MCPPCE_EN);
> - intel_uncore_write16(uncore, TSC1, I915_READ(TSC1) | TSE);
> -
> - /* 100ms RC evaluation intervals */
> - intel_uncore_write(uncore, RCUPEI, 100000);
> - intel_uncore_write(uncore, RCDNEI, 100000);
> -
> - /* Set max/min thresholds to 90ms and 80ms respectively */
> - intel_uncore_write(uncore, RCBMAXAVG, 90000);
> - intel_uncore_write(uncore, RCBMINAVG, 80000);
> -
> - intel_uncore_write(uncore, MEMIHYST, 1);
> + enum pipe pipe;
>
> - /* Set up min, max, and cur for interrupt handling */
> - fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT;
> - fmin = (rgvmodectl & MEMMODE_FMIN_MASK);
> - fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >>
> - MEMMODE_FSTART_SHIFT;
> + for_each_pipe(dev_priv, pipe) {
> + I915_WRITE(DSPCNTR(pipe),
> + I915_READ(DSPCNTR(pipe)) |
> + DISPPLANE_TRICKLE_FEED_DISABLE);
>
> - vstart = (intel_uncore_read(uncore, PXVFREQ(fstart)) &
> - PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT;
> + I915_WRITE(DSPSURF(pipe), I915_READ(DSPSURF(pipe)));
> + POSTING_READ(DSPSURF(pipe));
> + }
> +}
>
> - dev_priv->ips.fmax = fmax; /* IPS callback will increase this */
> - dev_priv->ips.fstart = fstart;
> +static void ilk_init_clock_gating(struct drm_i915_private *dev_priv)
> +{
> + u32 dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE;
>
> - dev_priv->ips.max_delay = fstart;
> - dev_priv->ips.min_delay = fmin;
> - dev_priv->ips.cur_delay = fstart;
> + /*
> + * Required for FBC
> + * WaFbcDisableDpfcClockGating:ilk
> + */
> + dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE |
> + ILK_DPFCUNIT_CLOCK_GATE_DISABLE |
> + ILK_DPFDUNIT_CLOCK_GATE_ENABLE;
>
> - DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n",
> - fmax, fmin, fstart);
> + I915_WRITE(PCH_3DCGDIS0,
> + MARIUNIT_CLOCK_GATE_DISABLE |
> + SVSMUNIT_CLOCK_GATE_DISABLE);
> + I915_WRITE(PCH_3DCGDIS1,
> + VFMUNIT_CLOCK_GATE_DISABLE);
>
> - intel_uncore_write(uncore,
> - MEMINTREN,
> - MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN);
> + /*
> + * According to the spec the following bits should be set in
> + * order to enable memory self-refresh
> + * The bit 22/21 of 0x42004
> + * The bit 5 of 0x42020
> + * The bit 15 of 0x45000
> + */
> + I915_WRITE(ILK_DISPLAY_CHICKEN2,
> + (I915_READ(ILK_DISPLAY_CHICKEN2) |
> + ILK_DPARB_GATE | ILK_VSDPFD_FULL));
> + dspclk_gate |= ILK_DPARBUNIT_CLOCK_GATE_ENABLE;
> + I915_WRITE(DISP_ARB_CTL,
> + (I915_READ(DISP_ARB_CTL) |
> + DISP_FBC_WM_DIS));
>
> /*
> - * Interrupts will be enabled in ironlake_irq_postinstall
> + * Based on the document from hardware guys the following bits
> + * should be set unconditionally in order to enable FBC.
> + * The bit 22 of 0x42000
> + * The bit 22 of 0x42004
> + * The bit 7,8,9 of 0x42020.
> */
> + if (IS_IRONLAKE_M(dev_priv)) {
> + /* WaFbcAsynchFlipDisableFbcQueue:ilk */
> + I915_WRITE(ILK_DISPLAY_CHICKEN1,
> + I915_READ(ILK_DISPLAY_CHICKEN1) |
> + ILK_FBCQ_DIS);
> + I915_WRITE(ILK_DISPLAY_CHICKEN2,
> + I915_READ(ILK_DISPLAY_CHICKEN2) |
> + ILK_DPARB_GATE);
> + }
>
> - intel_uncore_write(uncore, VIDSTART, vstart);
> - intel_uncore_posting_read(uncore, VIDSTART);
> + I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate);
>
> - rgvmodectl |= MEMMODE_SWMODE_EN;
> - intel_uncore_write(uncore, MEMMODECTL, rgvmodectl);
> + I915_WRITE(ILK_DISPLAY_CHICKEN2,
> + I915_READ(ILK_DISPLAY_CHICKEN2) |
> + ILK_ELPIN_409_SELECT);
> + I915_WRITE(_3D_CHICKEN2,
> + _3D_CHICKEN2_WM_READ_PIPELINED << 16 |
> + _3D_CHICKEN2_WM_READ_PIPELINED);
>
> - if (wait_for_atomic((intel_uncore_read(uncore, MEMSWCTL) &
> - MEMCTL_CMD_STS) == 0, 10))
> - DRM_ERROR("stuck trying to change perf mode\n");
> - mdelay(1);
> + /* WaDisableRenderCachePipelinedFlush:ilk */
> + I915_WRITE(CACHE_MODE_0,
> + _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE));
>
> - ironlake_set_drps(dev_priv, fstart);
> + /* WaDisable_RenderCache_OperationalFlush:ilk */
> + I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE));
>
> - dev_priv->ips.last_count1 =
> - intel_uncore_read(uncore, DMIEC) +
> - intel_uncore_read(uncore, DDREC) +
> - intel_uncore_read(uncore, CSIEC);
> - dev_priv->ips.last_time1 = jiffies_to_msecs(jiffies);
> - dev_priv->ips.last_count2 = intel_uncore_read(uncore, GFXEC);
> - dev_priv->ips.last_time2 = ktime_get_raw_ns();
> + g4x_disable_trickle_feed(dev_priv);
>
> - spin_unlock_irq(&mchdev_lock);
> + ibx_init_clock_gating(dev_priv);
> }
>
> -static void ironlake_disable_drps(struct drm_i915_private *i915)
> +static void cpt_init_clock_gating(struct drm_i915_private *dev_priv)
> {
> - struct intel_uncore *uncore = &i915->uncore;
> - u16 rgvswctl;
> -
> - spin_lock_irq(&mchdev_lock);
> -
> - rgvswctl = intel_uncore_read16(uncore, MEMSWCTL);
> -
> - /* Ack interrupts, disable EFC interrupt */
> - intel_uncore_write(uncore,
> - MEMINTREN,
> - intel_uncore_read(uncore, MEMINTREN) &
> - ~MEMINT_EVAL_CHG_EN);
> - intel_uncore_write(uncore, MEMINTRSTS, MEMINT_EVAL_CHG);
> - intel_uncore_write(uncore,
> - DEIER,
> - intel_uncore_read(uncore, DEIER) & ~DE_PCU_EVENT);
> - intel_uncore_write(uncore, DEIIR, DE_PCU_EVENT);
> - intel_uncore_write(uncore,
> - DEIMR,
> - intel_uncore_read(uncore, DEIMR) | DE_PCU_EVENT);
> -
> - /* Go back to the starting frequency */
> - ironlake_set_drps(i915, i915->ips.fstart);
> - mdelay(1);
> - rgvswctl |= MEMCTL_CMD_STS;
> - intel_uncore_write(uncore, MEMSWCTL, rgvswctl);
> - mdelay(1);
> + enum pipe pipe;
> + u32 val;
>
> - spin_unlock_irq(&mchdev_lock);
> + /*
> + * On Ibex Peak and Cougar Point, we need to disable clock
> + * gating for the panel power sequencer or it will fail to
> + * start up when no ports are active.
> + */
> + I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE |
> + PCH_DPLUNIT_CLOCK_GATE_DISABLE |
> + PCH_CPUNIT_CLOCK_GATE_DISABLE);
> + I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) |
> + DPLS_EDP_PPS_FIX_DIS);
> + /* The below fixes the weird display corruption, a few pixels shifted
> + * downward, on (only) LVDS of some HP laptops with IVY.
> + */
> + for_each_pipe(dev_priv, pipe) {
> + val = I915_READ(TRANS_CHICKEN2(pipe));
> + val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
> + val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED;
> + if (dev_priv->vbt.fdi_rx_polarity_inverted)
> + val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED;
> + val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK;
> + val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER;
> + val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH;
> + I915_WRITE(TRANS_CHICKEN2(pipe), val);
> + }
> + /* WADP0ClockGatingDisable */
> + for_each_pipe(dev_priv, pipe) {
> + I915_WRITE(TRANS_CHICKEN1(pipe),
> + TRANS_CHICKEN1_DP0UNIT_GC_DISABLE);
> + }
> }
>
> -/* There's a funny hw issue where the hw returns all 0 when reading from
> - * GEN6_RP_INTERRUPT_LIMITS. Hence we always need to compute the desired value
> - * ourselves, instead of doing a rmw cycle (which might result in us clearing
> - * all limits and the gpu stuck at whatever frequency it is at atm).
> - */
> -static u32 intel_rps_limits(struct drm_i915_private *dev_priv, u8 val)
> +static void gen6_check_mch_setup(struct drm_i915_private *dev_priv)
> {
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - u32 limits;
> -
> - /* Only set the down limit when we've reached the lowest level to avoid
> - * getting more interrupts, otherwise leave this clear. This prevents a
> - * race in the hw when coming out of rc6: There's a tiny window where
> - * the hw runs at the minimal clock before selecting the desired
> - * frequency, if the down threshold expires in that window we will not
> - * receive a down interrupt. */
> - if (INTEL_GEN(dev_priv) >= 9) {
> - limits = (rps->max_freq_softlimit) << 23;
> - if (val <= rps->min_freq_softlimit)
> - limits |= (rps->min_freq_softlimit) << 14;
> - } else {
> - limits = rps->max_freq_softlimit << 24;
> - if (val <= rps->min_freq_softlimit)
> - limits |= rps->min_freq_softlimit << 16;
> - }
> + u32 tmp;
>
> - return limits;
> + tmp = I915_READ(MCH_SSKPD);
> + if ((tmp & MCH_SSKPD_WM0_MASK) != MCH_SSKPD_WM0_VAL)
> + DRM_DEBUG_KMS("Wrong MCH_SSKPD value: 0x%08x This can cause underruns.\n",
> + tmp);
> }
>
> -static void rps_set_power(struct drm_i915_private *dev_priv, int new_power)
> +static void gen6_init_clock_gating(struct drm_i915_private *dev_priv)
> {
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - u32 threshold_up = 0, threshold_down = 0; /* in % */
> - u32 ei_up = 0, ei_down = 0;
> -
> - lockdep_assert_held(&rps->power.mutex);
> + u32 dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE;
>
> - if (new_power == rps->power.mode)
> - return;
> + I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate);
>
> - /* Note the units here are not exactly 1us, but 1280ns. */
> - switch (new_power) {
> - case LOW_POWER:
> - /* Upclock if more than 95% busy over 16ms */
> - ei_up = 16000;
> - threshold_up = 95;
> + I915_WRITE(ILK_DISPLAY_CHICKEN2,
> + I915_READ(ILK_DISPLAY_CHICKEN2) |
> + ILK_ELPIN_409_SELECT);
>
> - /* Downclock if less than 85% busy over 32ms */
> - ei_down = 32000;
> - threshold_down = 85;
> - break;
> + /* WaDisableHiZPlanesWhenMSAAEnabled:snb */
> + I915_WRITE(_3D_CHICKEN,
> + _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB));
>
> - case BETWEEN:
> - /* Upclock if more than 90% busy over 13ms */
> - ei_up = 13000;
> - threshold_up = 90;
> + /* WaDisable_RenderCache_OperationalFlush:snb */
> + I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE));
>
> - /* Downclock if less than 75% busy over 32ms */
> - ei_down = 32000;
> - threshold_down = 75;
> - break;
> + /*
> + * BSpec recoomends 8x4 when MSAA is used,
> + * however in practice 16x4 seems fastest.
> + *
> + * Note that PS/WM thread counts depend on the WIZ hashing
> + * disable bit, which we don't touch here, but it's good
> + * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM).
> + */
> + I915_WRITE(GEN6_GT_MODE,
> + _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4));
>
> - case HIGH_POWER:
> - /* Upclock if more than 85% busy over 10ms */
> - ei_up = 10000;
> - threshold_up = 85;
> + I915_WRITE(CACHE_MODE_0,
> + _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB));
>
> - /* Downclock if less than 60% busy over 32ms */
> - ei_down = 32000;
> - threshold_down = 60;
> - break;
> - }
> + I915_WRITE(GEN6_UCGCTL1,
> + I915_READ(GEN6_UCGCTL1) |
> + GEN6_BLBUNIT_CLOCK_GATE_DISABLE |
> + GEN6_CSUNIT_CLOCK_GATE_DISABLE);
>
> - /* When byt can survive without system hang with dynamic
> - * sw freq adjustments, this restriction can be lifted.
> + /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock
> + * gating disable must be set. Failure to set it results in
> + * flickering pixels due to Z write ordering failures after
> + * some amount of runtime in the Mesa "fire" demo, and Unigine
> + * Sanctuary and Tropics, and apparently anything else with
> + * alpha test or pixel discard.
> + *
> + * According to the spec, bit 11 (RCCUNIT) must also be set,
> + * but we didn't debug actual testcases to find it out.
> + *
> + * WaDisableRCCUnitClockGating:snb
> + * WaDisableRCPBUnitClockGating:snb
> */
> - if (IS_VALLEYVIEW(dev_priv))
> - goto skip_hw_write;
> -
> - I915_WRITE(GEN6_RP_UP_EI,
> - GT_INTERVAL_FROM_US(dev_priv, ei_up));
> - I915_WRITE(GEN6_RP_UP_THRESHOLD,
> - GT_INTERVAL_FROM_US(dev_priv,
> - ei_up * threshold_up / 100));
> -
> - I915_WRITE(GEN6_RP_DOWN_EI,
> - GT_INTERVAL_FROM_US(dev_priv, ei_down));
> - I915_WRITE(GEN6_RP_DOWN_THRESHOLD,
> - GT_INTERVAL_FROM_US(dev_priv,
> - ei_down * threshold_down / 100));
> -
> - I915_WRITE(GEN6_RP_CONTROL,
> - (INTEL_GEN(dev_priv) > 9 ? 0 : GEN6_RP_MEDIA_TURBO) |
> - GEN6_RP_MEDIA_HW_NORMAL_MODE |
> - GEN6_RP_MEDIA_IS_GFX |
> - GEN6_RP_ENABLE |
> - GEN6_RP_UP_BUSY_AVG |
> - GEN6_RP_DOWN_IDLE_AVG);
> -
> -skip_hw_write:
> - rps->power.mode = new_power;
> - rps->power.up_threshold = threshold_up;
> - rps->power.down_threshold = threshold_down;
> -}
> -
> -static void gen6_set_rps_thresholds(struct drm_i915_private *dev_priv, u8 val)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - int new_power;
> -
> - new_power = rps->power.mode;
> - switch (rps->power.mode) {
> - case LOW_POWER:
> - if (val > rps->efficient_freq + 1 &&
> - val > rps->cur_freq)
> - new_power = BETWEEN;
> - break;
> + I915_WRITE(GEN6_UCGCTL2,
> + GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
> + GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
>
> - case BETWEEN:
> - if (val <= rps->efficient_freq &&
> - val < rps->cur_freq)
> - new_power = LOW_POWER;
> - else if (val >= rps->rp0_freq &&
> - val > rps->cur_freq)
> - new_power = HIGH_POWER;
> - break;
> + /* WaStripsFansDisableFastClipPerformanceFix:snb */
> + I915_WRITE(_3D_CHICKEN3,
> + _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL));
>
> - case HIGH_POWER:
> - if (val < (rps->rp1_freq + rps->rp0_freq) >> 1 &&
> - val < rps->cur_freq)
> - new_power = BETWEEN;
> - break;
> - }
> - /* Max/min bins are special */
> - if (val <= rps->min_freq_softlimit)
> - new_power = LOW_POWER;
> - if (val >= rps->max_freq_softlimit)
> - new_power = HIGH_POWER;
> + /*
> + * Bspec says:
> + * "This bit must be set if 3DSTATE_CLIP clip mode is set to normal and
> + * 3DSTATE_SF number of SF output attributes is more than 16."
> + */
> + I915_WRITE(_3D_CHICKEN3,
> + _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_PIPELINED_ATTR_FETCH));
>
> - mutex_lock(&rps->power.mutex);
> - if (rps->power.interactive)
> - new_power = HIGH_POWER;
> - rps_set_power(dev_priv, new_power);
> - mutex_unlock(&rps->power.mutex);
> -}
> + /*
> + * According to the spec the following bits should be
> + * set in order to enable memory self-refresh and fbc:
> + * The bit21 and bit22 of 0x42000
> + * The bit21 and bit22 of 0x42004
> + * The bit5 and bit7 of 0x42020
> + * The bit14 of 0x70180
> + * The bit14 of 0x71180
> + *
> + * WaFbcAsynchFlipDisableFbcQueue:snb
> + */
> + I915_WRITE(ILK_DISPLAY_CHICKEN1,
> + I915_READ(ILK_DISPLAY_CHICKEN1) |
> + ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS);
> + I915_WRITE(ILK_DISPLAY_CHICKEN2,
> + I915_READ(ILK_DISPLAY_CHICKEN2) |
> + ILK_DPARB_GATE | ILK_VSDPFD_FULL);
> + I915_WRITE(ILK_DSPCLK_GATE_D,
> + I915_READ(ILK_DSPCLK_GATE_D) |
> + ILK_DPARBUNIT_CLOCK_GATE_ENABLE |
> + ILK_DPFDUNIT_CLOCK_GATE_ENABLE);
>
> -void intel_rps_mark_interactive(struct drm_i915_private *i915, bool interactive)
> -{
> - struct intel_rps *rps = &i915->gt_pm.rps;
> + g4x_disable_trickle_feed(dev_priv);
>
> - if (INTEL_GEN(i915) < 6)
> - return;
> + cpt_init_clock_gating(dev_priv);
>
> - mutex_lock(&rps->power.mutex);
> - if (interactive) {
> - if (!rps->power.interactive++ && READ_ONCE(i915->gt.awake))
> - rps_set_power(i915, HIGH_POWER);
> - } else {
> - GEM_BUG_ON(!rps->power.interactive);
> - rps->power.interactive--;
> - }
> - mutex_unlock(&rps->power.mutex);
> + gen6_check_mch_setup(dev_priv);
> }
>
> -static u32 gen6_rps_pm_mask(struct drm_i915_private *dev_priv, u8 val)
> +static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv)
> {
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - u32 mask = 0;
> -
> - /* We use UP_EI_EXPIRED interupts for both up/down in manual mode */
> - if (val > rps->min_freq_softlimit)
> - mask |= GEN6_PM_RP_UP_EI_EXPIRED | GEN6_PM_RP_DOWN_THRESHOLD | GEN6_PM_RP_DOWN_TIMEOUT;
> - if (val < rps->max_freq_softlimit)
> - mask |= GEN6_PM_RP_UP_EI_EXPIRED | GEN6_PM_RP_UP_THRESHOLD;
> -
> - mask &= dev_priv->pm_rps_events;
> -
> - return gen6_sanitize_rps_pm_mask(dev_priv, ~mask);
> -}
> -
> -/* gen6_set_rps is called to update the frequency request, but should also be
> - * called when the range (min_delay and max_delay) is modified so that we can
> - * update the GEN6_RP_INTERRUPT_LIMITS register accordingly. */
> -static int gen6_set_rps(struct drm_i915_private *dev_priv, u8 val)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> -
> - /* min/max delay may still have been modified so be sure to
> - * write the limits value.
> - */
> - if (val != rps->cur_freq) {
> - gen6_set_rps_thresholds(dev_priv, val);
> -
> - if (INTEL_GEN(dev_priv) >= 9)
> - I915_WRITE(GEN6_RPNSWREQ,
> - GEN9_FREQUENCY(val));
> - else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
> - I915_WRITE(GEN6_RPNSWREQ,
> - HSW_FREQUENCY(val));
> - else
> - I915_WRITE(GEN6_RPNSWREQ,
> - GEN6_FREQUENCY(val) |
> - GEN6_OFFSET(0) |
> - GEN6_AGGRESSIVE_TURBO);
> - }
> -
> - /* Make sure we continue to get interrupts
> - * until we hit the minimum or maximum frequencies.
> - */
> - I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, intel_rps_limits(dev_priv, val));
> - I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val));
> -
> - rps->cur_freq = val;
> - trace_intel_gpu_freq_change(intel_gpu_freq(dev_priv, val));
> -
> - return 0;
> -}
> -
> -static int valleyview_set_rps(struct drm_i915_private *dev_priv, u8 val)
> -{
> - int err;
> -
> - if (WARN_ONCE(IS_CHERRYVIEW(dev_priv) && (val & 1),
> - "Odd GPU freq value\n"))
> - val &= ~1;
> -
> - I915_WRITE(GEN6_PMINTRMSK, gen6_rps_pm_mask(dev_priv, val));
> -
> - if (val != dev_priv->gt_pm.rps.cur_freq) {
> - vlv_punit_get(dev_priv);
> - err = vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val);
> - vlv_punit_put(dev_priv);
> - if (err)
> - return err;
> -
> - gen6_set_rps_thresholds(dev_priv, val);
> - }
> -
> - dev_priv->gt_pm.rps.cur_freq = val;
> - trace_intel_gpu_freq_change(intel_gpu_freq(dev_priv, val));
> -
> - return 0;
> -}
> -
> -/* vlv_set_rps_idle: Set the frequency to idle, if Gfx clocks are down
> - *
> - * * If Gfx is Idle, then
> - * 1. Forcewake Media well.
> - * 2. Request idle freq.
> - * 3. Release Forcewake of Media well.
> -*/
> -static void vlv_set_rps_idle(struct drm_i915_private *dev_priv)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - u32 val = rps->idle_freq;
> - int err;
> -
> - if (rps->cur_freq <= val)
> - return;
> -
> - /* The punit delays the write of the frequency and voltage until it
> - * determines the GPU is awake. During normal usage we don't want to
> - * waste power changing the frequency if the GPU is sleeping (rc6).
> - * However, the GPU and driver is now idle and we do not want to delay
> - * switching to minimum voltage (reducing power whilst idle) as we do
> - * not expect to be woken in the near future and so must flush the
> - * change by waking the device.
> - *
> - * We choose to take the media powerwell (either would do to trick the
> - * punit into committing the voltage change) as that takes a lot less
> - * power than the render powerwell.
> - */
> - intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_MEDIA);
> - err = valleyview_set_rps(dev_priv, val);
> - intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_MEDIA);
> -
> - if (err)
> - DRM_ERROR("Failed to set RPS for idle\n");
> -}
> -
> -void gen6_rps_busy(struct drm_i915_private *dev_priv)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> -
> - mutex_lock(&rps->lock);
> - if (rps->enabled) {
> - u8 freq;
> -
> - if (dev_priv->pm_rps_events & GEN6_PM_RP_UP_EI_EXPIRED)
> - gen6_rps_reset_ei(dev_priv);
> - I915_WRITE(GEN6_PMINTRMSK,
> - gen6_rps_pm_mask(dev_priv, rps->cur_freq));
> -
> - gen6_enable_rps_interrupts(dev_priv);
> -
> - /* Use the user's desired frequency as a guide, but for better
> - * performance, jump directly to RPe as our starting frequency.
> - */
> - freq = max(rps->cur_freq,
> - rps->efficient_freq);
> -
> - if (intel_set_rps(dev_priv,
> - clamp(freq,
> - rps->min_freq_softlimit,
> - rps->max_freq_softlimit)))
> - DRM_DEBUG_DRIVER("Failed to set idle frequency\n");
> - }
> - mutex_unlock(&rps->lock);
> -}
> -
> -void gen6_rps_idle(struct drm_i915_private *dev_priv)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> -
> - /* Flush our bottom-half so that it does not race with us
> - * setting the idle frequency and so that it is bounded by
> - * our rpm wakeref. And then disable the interrupts to stop any
> - * futher RPS reclocking whilst we are asleep.
> - */
> - gen6_disable_rps_interrupts(dev_priv);
> -
> - mutex_lock(&rps->lock);
> - if (rps->enabled) {
> - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
> - vlv_set_rps_idle(dev_priv);
> - else
> - gen6_set_rps(dev_priv, rps->idle_freq);
> - rps->last_adj = 0;
> - I915_WRITE(GEN6_PMINTRMSK,
> - gen6_sanitize_rps_pm_mask(dev_priv, ~0));
> - }
> - mutex_unlock(&rps->lock);
> -}
> -
> -void gen6_rps_boost(struct i915_request *rq)
> -{
> - struct intel_rps *rps = &rq->i915->gt_pm.rps;
> - unsigned long flags;
> - bool boost;
> -
> - /* This is intentionally racy! We peek at the state here, then
> - * validate inside the RPS worker.
> - */
> - if (!rps->enabled)
> - return;
> -
> - if (i915_request_signaled(rq))
> - return;
> -
> - /* Serializes with i915_request_retire() */
> - boost = false;
> - spin_lock_irqsave(&rq->lock, flags);
> - if (!i915_request_has_waitboost(rq) &&
> - !dma_fence_is_signaled_locked(&rq->fence)) {
> - boost = !atomic_fetch_inc(&rps->num_waiters);
> - rq->flags |= I915_REQUEST_WAITBOOST;
> - }
> - spin_unlock_irqrestore(&rq->lock, flags);
> - if (!boost)
> - return;
> -
> - if (READ_ONCE(rps->cur_freq) < rps->boost_freq)
> - schedule_work(&rps->work);
> -
> - atomic_inc(&rps->boosts);
> -}
> -
> -int intel_set_rps(struct drm_i915_private *dev_priv, u8 val)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - int err;
> -
> - lockdep_assert_held(&rps->lock);
> - GEM_BUG_ON(val > rps->max_freq);
> - GEM_BUG_ON(val < rps->min_freq);
> -
> - if (!rps->enabled) {
> - rps->cur_freq = val;
> - return 0;
> - }
> -
> - if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
> - err = valleyview_set_rps(dev_priv, val);
> - else
> - err = gen6_set_rps(dev_priv, val);
> -
> - return err;
> -}
> -
> -static void gen9_disable_rps(struct drm_i915_private *dev_priv)
> -{
> - I915_WRITE(GEN6_RP_CONTROL, 0);
> -}
> -
> -static void gen6_disable_rps(struct drm_i915_private *dev_priv)
> -{
> - I915_WRITE(GEN6_RPNSWREQ, 1 << 31);
> - I915_WRITE(GEN6_RP_CONTROL, 0);
> -}
> -
> -static void cherryview_disable_rps(struct drm_i915_private *dev_priv)
> -{
> - I915_WRITE(GEN6_RP_CONTROL, 0);
> -}
> -
> -static void valleyview_disable_rps(struct drm_i915_private *dev_priv)
> -{
> - I915_WRITE(GEN6_RP_CONTROL, 0);
> -}
> -
> -static void gen6_init_rps_frequencies(struct drm_i915_private *dev_priv)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> -
> - /* All of these values are in units of 50MHz */
> -
> - /* static values from HW: RP0 > RP1 > RPn (min_freq) */
> - if (IS_GEN9_LP(dev_priv)) {
> - u32 rp_state_cap = I915_READ(BXT_RP_STATE_CAP);
> - rps->rp0_freq = (rp_state_cap >> 16) & 0xff;
> - rps->rp1_freq = (rp_state_cap >> 8) & 0xff;
> - rps->min_freq = (rp_state_cap >> 0) & 0xff;
> - } else {
> - u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
> - rps->rp0_freq = (rp_state_cap >> 0) & 0xff;
> - rps->rp1_freq = (rp_state_cap >> 8) & 0xff;
> - rps->min_freq = (rp_state_cap >> 16) & 0xff;
> - }
> - /* hw_max = RP0 until we check for overclocking */
> - rps->max_freq = rps->rp0_freq;
> -
> - rps->efficient_freq = rps->rp1_freq;
> - if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv) ||
> - IS_GEN9_BC(dev_priv) || INTEL_GEN(dev_priv) >= 10) {
> - u32 ddcc_status = 0;
> -
> - if (sandybridge_pcode_read(dev_priv,
> - HSW_PCODE_DYNAMIC_DUTY_CYCLE_CONTROL,
> - &ddcc_status, NULL) == 0)
> - rps->efficient_freq =
> - clamp_t(u8,
> - ((ddcc_status >> 8) & 0xff),
> - rps->min_freq,
> - rps->max_freq);
> - }
> -
> - if (IS_GEN9_BC(dev_priv) || INTEL_GEN(dev_priv) >= 10) {
> - /* Store the frequency values in 16.66 MHZ units, which is
> - * the natural hardware unit for SKL
> - */
> - rps->rp0_freq *= GEN9_FREQ_SCALER;
> - rps->rp1_freq *= GEN9_FREQ_SCALER;
> - rps->min_freq *= GEN9_FREQ_SCALER;
> - rps->max_freq *= GEN9_FREQ_SCALER;
> - rps->efficient_freq *= GEN9_FREQ_SCALER;
> - }
> -}
> -
> -static void reset_rps(struct drm_i915_private *dev_priv,
> - int (*set)(struct drm_i915_private *, u8))
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - u8 freq = rps->cur_freq;
> -
> - /* force a reset */
> - rps->power.mode = -1;
> - rps->cur_freq = -1;
> -
> - if (set(dev_priv, freq))
> - DRM_ERROR("Failed to reset RPS to initial values\n");
> -}
> -
> -/* See the Gen9_GT_PM_Programming_Guide doc for the below */
> -static void gen9_enable_rps(struct drm_i915_private *dev_priv)
> -{
> - intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
> -
> - /* Program defaults and thresholds for RPS */
> - if (IS_GEN(dev_priv, 9))
> - I915_WRITE(GEN6_RC_VIDEO_FREQ,
> - GEN9_FREQUENCY(dev_priv->gt_pm.rps.rp1_freq));
> -
> - /* 1 second timeout*/
> - I915_WRITE(GEN6_RP_DOWN_TIMEOUT,
> - GT_INTERVAL_FROM_US(dev_priv, 1000000));
> -
> - I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 0xa);
> -
> - /* Leaning on the below call to gen6_set_rps to program/setup the
> - * Up/Down EI & threshold registers, as well as the RP_CONTROL,
> - * RP_INTERRUPT_LIMITS & RPNSWREQ registers */
> - reset_rps(dev_priv, gen6_set_rps);
> -
> - intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
> -}
> -
> -static void gen8_enable_rps(struct drm_i915_private *dev_priv)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> -
> - intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
> -
> - /* 1 Program defaults and thresholds for RPS*/
> - I915_WRITE(GEN6_RPNSWREQ,
> - HSW_FREQUENCY(rps->rp1_freq));
> - I915_WRITE(GEN6_RC_VIDEO_FREQ,
> - HSW_FREQUENCY(rps->rp1_freq));
> - /* NB: Docs say 1s, and 1000000 - which aren't equivalent */
> - I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 100000000 / 128); /* 1 second timeout */
> -
> - /* Docs recommend 900MHz, and 300 MHz respectively */
> - I915_WRITE(GEN6_RP_INTERRUPT_LIMITS,
> - rps->max_freq_softlimit << 24 |
> - rps->min_freq_softlimit << 16);
> -
> - I915_WRITE(GEN6_RP_UP_THRESHOLD, 7600000 / 128); /* 76ms busyness per EI, 90% */
> - I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 31300000 / 128); /* 313ms busyness per EI, 70%*/
> - I915_WRITE(GEN6_RP_UP_EI, 66000); /* 84.48ms, XXX: random? */
> - I915_WRITE(GEN6_RP_DOWN_EI, 350000); /* 448ms, XXX: random? */
> -
> - I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10);
> -
> - /* 2: Enable RPS */
> - I915_WRITE(GEN6_RP_CONTROL,
> - GEN6_RP_MEDIA_TURBO |
> - GEN6_RP_MEDIA_HW_NORMAL_MODE |
> - GEN6_RP_MEDIA_IS_GFX |
> - GEN6_RP_ENABLE |
> - GEN6_RP_UP_BUSY_AVG |
> - GEN6_RP_DOWN_IDLE_AVG);
> -
> - reset_rps(dev_priv, gen6_set_rps);
> -
> - intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
> -}
> -
> -static void gen6_enable_rps(struct drm_i915_private *dev_priv)
> -{
> - /* Here begins a magic sequence of register writes to enable
> - * auto-downclocking.
> - *
> - * Perhaps there might be some value in exposing these to
> - * userspace...
> - */
> - intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
> -
> - /* Power down if completely idle for over 50ms */
> - I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 50000);
> - I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10);
> -
> - reset_rps(dev_priv, gen6_set_rps);
> -
> - intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
> -}
> -
> -static int cherryview_rps_max_freq(struct drm_i915_private *dev_priv)
> -{
> - u32 val, rp0;
> -
> - val = vlv_punit_read(dev_priv, FB_GFX_FMAX_AT_VMAX_FUSE);
> -
> - switch (RUNTIME_INFO(dev_priv)->sseu.eu_total) {
> - case 8:
> - /* (2 * 4) config */
> - rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS4EU_FUSE_SHIFT);
> - break;
> - case 12:
> - /* (2 * 6) config */
> - rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS6EU_FUSE_SHIFT);
> - break;
> - case 16:
> - /* (2 * 8) config */
> - default:
> - /* Setting (2 * 8) Min RP0 for any other combination */
> - rp0 = (val >> FB_GFX_FMAX_AT_VMAX_2SS8EU_FUSE_SHIFT);
> - break;
> - }
> -
> - rp0 = (rp0 & FB_GFX_FREQ_FUSE_MASK);
> -
> - return rp0;
> -}
> -
> -static int cherryview_rps_rpe_freq(struct drm_i915_private *dev_priv)
> -{
> - u32 val, rpe;
> -
> - val = vlv_punit_read(dev_priv, PUNIT_GPU_DUTYCYCLE_REG);
> - rpe = (val >> PUNIT_GPU_DUTYCYCLE_RPE_FREQ_SHIFT) & PUNIT_GPU_DUTYCYCLE_RPE_FREQ_MASK;
> -
> - return rpe;
> -}
> -
> -static int cherryview_rps_guar_freq(struct drm_i915_private *dev_priv)
> -{
> - u32 val, rp1;
> -
> - val = vlv_punit_read(dev_priv, FB_GFX_FMAX_AT_VMAX_FUSE);
> - rp1 = (val & FB_GFX_FREQ_FUSE_MASK);
> -
> - return rp1;
> -}
> -
> -static u32 cherryview_rps_min_freq(struct drm_i915_private *dev_priv)
> -{
> - u32 val, rpn;
> -
> - val = vlv_punit_read(dev_priv, FB_GFX_FMIN_AT_VMIN_FUSE);
> - rpn = ((val >> FB_GFX_FMIN_AT_VMIN_FUSE_SHIFT) &
> - FB_GFX_FREQ_FUSE_MASK);
> -
> - return rpn;
> -}
> -
> -static int valleyview_rps_guar_freq(struct drm_i915_private *dev_priv)
> -{
> - u32 val, rp1;
> -
> - val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE);
> -
> - rp1 = (val & FB_GFX_FGUARANTEED_FREQ_FUSE_MASK) >> FB_GFX_FGUARANTEED_FREQ_FUSE_SHIFT;
> -
> - return rp1;
> -}
> -
> -static int valleyview_rps_max_freq(struct drm_i915_private *dev_priv)
> -{
> - u32 val, rp0;
> -
> - val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FREQ_FUSE);
> -
> - rp0 = (val & FB_GFX_MAX_FREQ_FUSE_MASK) >> FB_GFX_MAX_FREQ_FUSE_SHIFT;
> - /* Clamp to max */
> - rp0 = min_t(u32, rp0, 0xea);
> -
> - return rp0;
> -}
> -
> -static int valleyview_rps_rpe_freq(struct drm_i915_private *dev_priv)
> -{
> - u32 val, rpe;
> -
> - val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_LO);
> - rpe = (val & FB_FMAX_VMIN_FREQ_LO_MASK) >> FB_FMAX_VMIN_FREQ_LO_SHIFT;
> - val = vlv_nc_read(dev_priv, IOSF_NC_FB_GFX_FMAX_FUSE_HI);
> - rpe |= (val & FB_FMAX_VMIN_FREQ_HI_MASK) << 5;
> -
> - return rpe;
> -}
> -
> -static int valleyview_rps_min_freq(struct drm_i915_private *dev_priv)
> -{
> - u32 val;
> -
> - val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_LFM) & 0xff;
> - /*
> - * According to the BYT Punit GPU turbo HAS 1.1.6.3 the minimum value
> - * for the minimum frequency in GPLL mode is 0xc1. Contrary to this on
> - * a BYT-M B0 the above register contains 0xbf. Moreover when setting
> - * a frequency Punit will not allow values below 0xc0. Clamp it 0xc0
> - * to make sure it matches what Punit accepts.
> - */
> - return max_t(u32, val, 0xc0);
> -}
> -
> -static void vlv_init_gpll_ref_freq(struct drm_i915_private *dev_priv)
> -{
> - dev_priv->gt_pm.rps.gpll_ref_freq =
> - vlv_get_cck_clock(dev_priv, "GPLL ref",
> - CCK_GPLL_CLOCK_CONTROL,
> - dev_priv->czclk_freq);
> -
> - DRM_DEBUG_DRIVER("GPLL reference freq: %d kHz\n",
> - dev_priv->gt_pm.rps.gpll_ref_freq);
> -}
> -
> -static void valleyview_init_gt_powersave(struct drm_i915_private *dev_priv)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - u32 val;
> -
> - vlv_iosf_sb_get(dev_priv,
> - BIT(VLV_IOSF_SB_PUNIT) |
> - BIT(VLV_IOSF_SB_NC) |
> - BIT(VLV_IOSF_SB_CCK));
> -
> - vlv_init_gpll_ref_freq(dev_priv);
> -
> - val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
> - switch ((val >> 6) & 3) {
> - case 0:
> - case 1:
> - dev_priv->mem_freq = 800;
> - break;
> - case 2:
> - dev_priv->mem_freq = 1066;
> - break;
> - case 3:
> - dev_priv->mem_freq = 1333;
> - break;
> - }
> - DRM_DEBUG_DRIVER("DDR speed: %d MHz\n", dev_priv->mem_freq);
> -
> - rps->max_freq = valleyview_rps_max_freq(dev_priv);
> - rps->rp0_freq = rps->max_freq;
> - DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n",
> - intel_gpu_freq(dev_priv, rps->max_freq),
> - rps->max_freq);
> -
> - rps->efficient_freq = valleyview_rps_rpe_freq(dev_priv);
> - DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n",
> - intel_gpu_freq(dev_priv, rps->efficient_freq),
> - rps->efficient_freq);
> -
> - rps->rp1_freq = valleyview_rps_guar_freq(dev_priv);
> - DRM_DEBUG_DRIVER("RP1(Guar Freq) GPU freq: %d MHz (%u)\n",
> - intel_gpu_freq(dev_priv, rps->rp1_freq),
> - rps->rp1_freq);
> -
> - rps->min_freq = valleyview_rps_min_freq(dev_priv);
> - DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n",
> - intel_gpu_freq(dev_priv, rps->min_freq),
> - rps->min_freq);
> -
> - vlv_iosf_sb_put(dev_priv,
> - BIT(VLV_IOSF_SB_PUNIT) |
> - BIT(VLV_IOSF_SB_NC) |
> - BIT(VLV_IOSF_SB_CCK));
> -}
> -
> -static void cherryview_init_gt_powersave(struct drm_i915_private *dev_priv)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> - u32 val;
> -
> - vlv_iosf_sb_get(dev_priv,
> - BIT(VLV_IOSF_SB_PUNIT) |
> - BIT(VLV_IOSF_SB_NC) |
> - BIT(VLV_IOSF_SB_CCK));
> -
> - vlv_init_gpll_ref_freq(dev_priv);
> -
> - val = vlv_cck_read(dev_priv, CCK_FUSE_REG);
> -
> - switch ((val >> 2) & 0x7) {
> - case 3:
> - dev_priv->mem_freq = 2000;
> - break;
> - default:
> - dev_priv->mem_freq = 1600;
> - break;
> - }
> - DRM_DEBUG_DRIVER("DDR speed: %d MHz\n", dev_priv->mem_freq);
> -
> - rps->max_freq = cherryview_rps_max_freq(dev_priv);
> - rps->rp0_freq = rps->max_freq;
> - DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n",
> - intel_gpu_freq(dev_priv, rps->max_freq),
> - rps->max_freq);
> -
> - rps->efficient_freq = cherryview_rps_rpe_freq(dev_priv);
> - DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n",
> - intel_gpu_freq(dev_priv, rps->efficient_freq),
> - rps->efficient_freq);
> -
> - rps->rp1_freq = cherryview_rps_guar_freq(dev_priv);
> - DRM_DEBUG_DRIVER("RP1(Guar) GPU freq: %d MHz (%u)\n",
> - intel_gpu_freq(dev_priv, rps->rp1_freq),
> - rps->rp1_freq);
> -
> - rps->min_freq = cherryview_rps_min_freq(dev_priv);
> - DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n",
> - intel_gpu_freq(dev_priv, rps->min_freq),
> - rps->min_freq);
> -
> - vlv_iosf_sb_put(dev_priv,
> - BIT(VLV_IOSF_SB_PUNIT) |
> - BIT(VLV_IOSF_SB_NC) |
> - BIT(VLV_IOSF_SB_CCK));
> -
> - WARN_ONCE((rps->max_freq | rps->efficient_freq | rps->rp1_freq |
> - rps->min_freq) & 1,
> - "Odd GPU freq values\n");
> -}
> -
> -static void cherryview_enable_rps(struct drm_i915_private *dev_priv)
> -{
> - u32 val;
> -
> - intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
> -
> - /* 1: Program defaults and thresholds for RPS*/
> - I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000);
> - I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400);
> - I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000);
> - I915_WRITE(GEN6_RP_UP_EI, 66000);
> - I915_WRITE(GEN6_RP_DOWN_EI, 350000);
> -
> - I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10);
> -
> - /* 2: Enable RPS */
> - I915_WRITE(GEN6_RP_CONTROL,
> - GEN6_RP_MEDIA_HW_NORMAL_MODE |
> - GEN6_RP_MEDIA_IS_GFX |
> - GEN6_RP_ENABLE |
> - GEN6_RP_UP_BUSY_AVG |
> - GEN6_RP_DOWN_IDLE_AVG);
> -
> - /* Setting Fixed Bias */
> - vlv_punit_get(dev_priv);
> -
> - val = VLV_OVERRIDE_EN | VLV_SOC_TDP_EN | CHV_BIAS_CPU_50_SOC_50;
> - vlv_punit_write(dev_priv, VLV_TURBO_SOC_OVERRIDE, val);
> -
> - val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
> -
> - vlv_punit_put(dev_priv);
> -
> - /* RPS code assumes GPLL is used */
> - WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n");
> -
> - DRM_DEBUG_DRIVER("GPLL enabled? %s\n", yesno(val & GPLLENABLE));
> - DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val);
> -
> - reset_rps(dev_priv, valleyview_set_rps);
> -
> - intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
> -}
> -
> -static void valleyview_enable_rps(struct drm_i915_private *dev_priv)
> -{
> - u32 val;
> -
> - intel_uncore_forcewake_get(&dev_priv->uncore, FORCEWAKE_ALL);
> -
> - I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000);
> - I915_WRITE(GEN6_RP_UP_THRESHOLD, 59400);
> - I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 245000);
> - I915_WRITE(GEN6_RP_UP_EI, 66000);
> - I915_WRITE(GEN6_RP_DOWN_EI, 350000);
> -
> - I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10);
> -
> - I915_WRITE(GEN6_RP_CONTROL,
> - GEN6_RP_MEDIA_TURBO |
> - GEN6_RP_MEDIA_HW_NORMAL_MODE |
> - GEN6_RP_MEDIA_IS_GFX |
> - GEN6_RP_ENABLE |
> - GEN6_RP_UP_BUSY_AVG |
> - GEN6_RP_DOWN_IDLE_CONT);
> -
> - vlv_punit_get(dev_priv);
> -
> - /* Setting Fixed Bias */
> - val = VLV_OVERRIDE_EN | VLV_SOC_TDP_EN | VLV_BIAS_CPU_125_SOC_875;
> - vlv_punit_write(dev_priv, VLV_TURBO_SOC_OVERRIDE, val);
> -
> - val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
> -
> - vlv_punit_put(dev_priv);
> -
> - /* RPS code assumes GPLL is used */
> - WARN_ONCE((val & GPLLENABLE) == 0, "GPLL not enabled\n");
> -
> - DRM_DEBUG_DRIVER("GPLL enabled? %s\n", yesno(val & GPLLENABLE));
> - DRM_DEBUG_DRIVER("GPU status: 0x%08x\n", val);
> -
> - reset_rps(dev_priv, valleyview_set_rps);
> -
> - intel_uncore_forcewake_put(&dev_priv->uncore, FORCEWAKE_ALL);
> -}
> -
> -static unsigned long intel_pxfreq(u32 vidfreq)
> -{
> - unsigned long freq;
> - int div = (vidfreq & 0x3f0000) >> 16;
> - int post = (vidfreq & 0x3000) >> 12;
> - int pre = (vidfreq & 0x7);
> -
> - if (!pre)
> - return 0;
> -
> - freq = ((div * 133333) / ((1<<post) * pre));
> -
> - return freq;
> -}
> -
> -static const struct cparams {
> - u16 i;
> - u16 t;
> - u16 m;
> - u16 c;
> -} cparams[] = {
> - { 1, 1333, 301, 28664 },
> - { 1, 1066, 294, 24460 },
> - { 1, 800, 294, 25192 },
> - { 0, 1333, 276, 27605 },
> - { 0, 1066, 276, 27605 },
> - { 0, 800, 231, 23784 },
> -};
> -
> -static unsigned long __i915_chipset_val(struct drm_i915_private *dev_priv)
> -{
> - u64 total_count, diff, ret;
> - u32 count1, count2, count3, m = 0, c = 0;
> - unsigned long now = jiffies_to_msecs(jiffies), diff1;
> - int i;
> -
> - lockdep_assert_held(&mchdev_lock);
> -
> - diff1 = now - dev_priv->ips.last_time1;
> -
> - /* Prevent division-by-zero if we are asking too fast.
> - * Also, we don't get interesting results if we are polling
> - * faster than once in 10ms, so just return the saved value
> - * in such cases.
> - */
> - if (diff1 <= 10)
> - return dev_priv->ips.chipset_power;
> -
> - count1 = I915_READ(DMIEC);
> - count2 = I915_READ(DDREC);
> - count3 = I915_READ(CSIEC);
> -
> - total_count = count1 + count2 + count3;
> -
> - /* FIXME: handle per-counter overflow */
> - if (total_count < dev_priv->ips.last_count1) {
> - diff = ~0UL - dev_priv->ips.last_count1;
> - diff += total_count;
> - } else {
> - diff = total_count - dev_priv->ips.last_count1;
> - }
> -
> - for (i = 0; i < ARRAY_SIZE(cparams); i++) {
> - if (cparams[i].i == dev_priv->ips.c_m &&
> - cparams[i].t == dev_priv->ips.r_t) {
> - m = cparams[i].m;
> - c = cparams[i].c;
> - break;
> - }
> - }
> -
> - diff = div_u64(diff, diff1);
> - ret = ((m * diff) + c);
> - ret = div_u64(ret, 10);
> -
> - dev_priv->ips.last_count1 = total_count;
> - dev_priv->ips.last_time1 = now;
> -
> - dev_priv->ips.chipset_power = ret;
> -
> - return ret;
> -}
> -
> -unsigned long i915_chipset_val(struct drm_i915_private *dev_priv)
> -{
> - intel_wakeref_t wakeref;
> - unsigned long val = 0;
> -
> - if (!IS_GEN(dev_priv, 5))
> - return 0;
> -
> - with_intel_runtime_pm(&dev_priv->runtime_pm, wakeref) {
> - spin_lock_irq(&mchdev_lock);
> - val = __i915_chipset_val(dev_priv);
> - spin_unlock_irq(&mchdev_lock);
> - }
> -
> - return val;
> -}
> -
> -unsigned long i915_mch_val(struct drm_i915_private *i915)
> -{
> - unsigned long m, x, b;
> - u32 tsfs;
> -
> - tsfs = intel_uncore_read(&i915->uncore, TSFS);
> -
> - m = ((tsfs & TSFS_SLOPE_MASK) >> TSFS_SLOPE_SHIFT);
> - x = intel_uncore_read8(&i915->uncore, TR1);
> -
> - b = tsfs & TSFS_INTR_MASK;
> -
> - return ((m * x) / 127) - b;
> -}
> -
> -static int _pxvid_to_vd(u8 pxvid)
> -{
> - if (pxvid == 0)
> - return 0;
> -
> - if (pxvid >= 8 && pxvid < 31)
> - pxvid = 31;
> -
> - return (pxvid + 2) * 125;
> -}
> -
> -static u32 pvid_to_extvid(struct drm_i915_private *dev_priv, u8 pxvid)
> -{
> - const int vd = _pxvid_to_vd(pxvid);
> - const int vm = vd - 1125;
> -
> - if (INTEL_INFO(dev_priv)->is_mobile)
> - return vm > 0 ? vm : 0;
> -
> - return vd;
> -}
> -
> -static void __i915_update_gfx_val(struct drm_i915_private *dev_priv)
> -{
> - u64 now, diff, diffms;
> - u32 count;
> -
> - lockdep_assert_held(&mchdev_lock);
> -
> - now = ktime_get_raw_ns();
> - diffms = now - dev_priv->ips.last_time2;
> - do_div(diffms, NSEC_PER_MSEC);
> -
> - /* Don't divide by 0 */
> - if (!diffms)
> - return;
> -
> - count = I915_READ(GFXEC);
> -
> - if (count < dev_priv->ips.last_count2) {
> - diff = ~0UL - dev_priv->ips.last_count2;
> - diff += count;
> - } else {
> - diff = count - dev_priv->ips.last_count2;
> - }
> -
> - dev_priv->ips.last_count2 = count;
> - dev_priv->ips.last_time2 = now;
> -
> - /* More magic constants... */
> - diff = diff * 1181;
> - diff = div_u64(diff, diffms * 10);
> - dev_priv->ips.gfx_power = diff;
> -}
> -
> -void i915_update_gfx_val(struct drm_i915_private *dev_priv)
> -{
> - intel_wakeref_t wakeref;
> -
> - if (!IS_GEN(dev_priv, 5))
> - return;
> -
> - with_intel_runtime_pm(&dev_priv->runtime_pm, wakeref) {
> - spin_lock_irq(&mchdev_lock);
> - __i915_update_gfx_val(dev_priv);
> - spin_unlock_irq(&mchdev_lock);
> - }
> -}
> -
> -static unsigned long __i915_gfx_val(struct drm_i915_private *dev_priv)
> -{
> - unsigned long t, corr, state1, corr2, state2;
> - u32 pxvid, ext_v;
> -
> - lockdep_assert_held(&mchdev_lock);
> -
> - pxvid = I915_READ(PXVFREQ(dev_priv->gt_pm.rps.cur_freq));
> - pxvid = (pxvid >> 24) & 0x7f;
> - ext_v = pvid_to_extvid(dev_priv, pxvid);
> -
> - state1 = ext_v;
> -
> - t = i915_mch_val(dev_priv);
> -
> - /* Revel in the empirically derived constants */
> -
> - /* Correction factor in 1/100000 units */
> - if (t > 80)
> - corr = ((t * 2349) + 135940);
> - else if (t >= 50)
> - corr = ((t * 964) + 29317);
> - else /* < 50 */
> - corr = ((t * 301) + 1004);
> -
> - corr = corr * ((150142 * state1) / 10000 - 78642);
> - corr /= 100000;
> - corr2 = (corr * dev_priv->ips.corr);
> -
> - state2 = (corr2 * state1) / 10000;
> - state2 /= 100; /* convert to mW */
> -
> - __i915_update_gfx_val(dev_priv);
> -
> - return dev_priv->ips.gfx_power + state2;
> -}
> -
> -unsigned long i915_gfx_val(struct drm_i915_private *dev_priv)
> -{
> - intel_wakeref_t wakeref;
> - unsigned long val = 0;
> -
> - if (!IS_GEN(dev_priv, 5))
> - return 0;
> -
> - with_intel_runtime_pm(&dev_priv->runtime_pm, wakeref) {
> - spin_lock_irq(&mchdev_lock);
> - val = __i915_gfx_val(dev_priv);
> - spin_unlock_irq(&mchdev_lock);
> - }
> -
> - return val;
> -}
> -
> -static struct drm_i915_private __rcu *i915_mch_dev;
> -
> -static struct drm_i915_private *mchdev_get(void)
> -{
> - struct drm_i915_private *i915;
> -
> - rcu_read_lock();
> - i915 = rcu_dereference(i915_mch_dev);
> - if (!kref_get_unless_zero(&i915->drm.ref))
> - i915 = NULL;
> - rcu_read_unlock();
> -
> - return i915;
> -}
> -
> -/**
> - * i915_read_mch_val - return value for IPS use
> - *
> - * Calculate and return a value for the IPS driver to use when deciding whether
> - * we have thermal and power headroom to increase CPU or GPU power budget.
> - */
> -unsigned long i915_read_mch_val(void)
> -{
> - struct drm_i915_private *i915;
> - unsigned long chipset_val = 0;
> - unsigned long graphics_val = 0;
> - intel_wakeref_t wakeref;
> -
> - i915 = mchdev_get();
> - if (!i915)
> - return 0;
> -
> - with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
> - spin_lock_irq(&mchdev_lock);
> - chipset_val = __i915_chipset_val(i915);
> - graphics_val = __i915_gfx_val(i915);
> - spin_unlock_irq(&mchdev_lock);
> - }
> -
> - drm_dev_put(&i915->drm);
> - return chipset_val + graphics_val;
> -}
> -EXPORT_SYMBOL_GPL(i915_read_mch_val);
> -
> -/**
> - * i915_gpu_raise - raise GPU frequency limit
> - *
> - * Raise the limit; IPS indicates we have thermal headroom.
> - */
> -bool i915_gpu_raise(void)
> -{
> - struct drm_i915_private *i915;
> -
> - i915 = mchdev_get();
> - if (!i915)
> - return false;
> -
> - spin_lock_irq(&mchdev_lock);
> - if (i915->ips.max_delay > i915->ips.fmax)
> - i915->ips.max_delay--;
> - spin_unlock_irq(&mchdev_lock);
> -
> - drm_dev_put(&i915->drm);
> - return true;
> -}
> -EXPORT_SYMBOL_GPL(i915_gpu_raise);
> -
> -/**
> - * i915_gpu_lower - lower GPU frequency limit
> - *
> - * IPS indicates we're close to a thermal limit, so throttle back the GPU
> - * frequency maximum.
> - */
> -bool i915_gpu_lower(void)
> -{
> - struct drm_i915_private *i915;
> -
> - i915 = mchdev_get();
> - if (!i915)
> - return false;
> -
> - spin_lock_irq(&mchdev_lock);
> - if (i915->ips.max_delay < i915->ips.min_delay)
> - i915->ips.max_delay++;
> - spin_unlock_irq(&mchdev_lock);
> -
> - drm_dev_put(&i915->drm);
> - return true;
> -}
> -EXPORT_SYMBOL_GPL(i915_gpu_lower);
> -
> -/**
> - * i915_gpu_busy - indicate GPU business to IPS
> - *
> - * Tell the IPS driver whether or not the GPU is busy.
> - */
> -bool i915_gpu_busy(void)
> -{
> - struct drm_i915_private *i915;
> - bool ret;
> -
> - i915 = mchdev_get();
> - if (!i915)
> - return false;
> -
> - ret = i915->gt.awake;
> -
> - drm_dev_put(&i915->drm);
> - return ret;
> -}
> -EXPORT_SYMBOL_GPL(i915_gpu_busy);
> -
> -/**
> - * i915_gpu_turbo_disable - disable graphics turbo
> - *
> - * Disable graphics turbo by resetting the max frequency and setting the
> - * current frequency to the default.
> - */
> -bool i915_gpu_turbo_disable(void)
> -{
> - struct drm_i915_private *i915;
> - bool ret;
> -
> - i915 = mchdev_get();
> - if (!i915)
> - return false;
> -
> - spin_lock_irq(&mchdev_lock);
> - i915->ips.max_delay = i915->ips.fstart;
> - ret = ironlake_set_drps(i915, i915->ips.fstart);
> - spin_unlock_irq(&mchdev_lock);
> -
> - drm_dev_put(&i915->drm);
> - return ret;
> -}
> -EXPORT_SYMBOL_GPL(i915_gpu_turbo_disable);
> -
> -/**
> - * Tells the intel_ips driver that the i915 driver is now loaded, if
> - * IPS got loaded first.
> - *
> - * This awkward dance is so that neither module has to depend on the
> - * other in order for IPS to do the appropriate communication of
> - * GPU turbo limits to i915.
> - */
> -static void
> -ips_ping_for_i915_load(void)
> -{
> - void (*link)(void);
> -
> - link = symbol_get(ips_link_to_i915_driver);
> - if (link) {
> - link();
> - symbol_put(ips_link_to_i915_driver);
> - }
> -}
> -
> -void intel_gpu_ips_init(struct drm_i915_private *dev_priv)
> -{
> - /* We only register the i915 ips part with intel-ips once everything is
> - * set up, to avoid intel-ips sneaking in and reading bogus values. */
> - rcu_assign_pointer(i915_mch_dev, dev_priv);
> -
> - ips_ping_for_i915_load();
> -}
> -
> -void intel_gpu_ips_teardown(void)
> -{
> - rcu_assign_pointer(i915_mch_dev, NULL);
> -}
> -
> -static void intel_init_emon(struct drm_i915_private *dev_priv)
> -{
> - u32 lcfuse;
> - u8 pxw[16];
> - int i;
> -
> - /* Disable to program */
> - I915_WRITE(ECR, 0);
> - POSTING_READ(ECR);
> -
> - /* Program energy weights for various events */
> - I915_WRITE(SDEW, 0x15040d00);
> - I915_WRITE(CSIEW0, 0x007f0000);
> - I915_WRITE(CSIEW1, 0x1e220004);
> - I915_WRITE(CSIEW2, 0x04000004);
> -
> - for (i = 0; i < 5; i++)
> - I915_WRITE(PEW(i), 0);
> - for (i = 0; i < 3; i++)
> - I915_WRITE(DEW(i), 0);
> -
> - /* Program P-state weights to account for frequency power adjustment */
> - for (i = 0; i < 16; i++) {
> - u32 pxvidfreq = I915_READ(PXVFREQ(i));
> - unsigned long freq = intel_pxfreq(pxvidfreq);
> - unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >>
> - PXVFREQ_PX_SHIFT;
> - unsigned long val;
> -
> - val = vid * vid;
> - val *= (freq / 1000);
> - val *= 255;
> - val /= (127*127*900);
> - if (val > 0xff)
> - DRM_ERROR("bad pxval: %ld\n", val);
> - pxw[i] = val;
> - }
> - /* Render standby states get 0 weight */
> - pxw[14] = 0;
> - pxw[15] = 0;
> -
> - for (i = 0; i < 4; i++) {
> - u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) |
> - (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]);
> - I915_WRITE(PXW(i), val);
> - }
> -
> - /* Adjust magic regs to magic values (more experimental results) */
> - I915_WRITE(OGW0, 0);
> - I915_WRITE(OGW1, 0);
> - I915_WRITE(EG0, 0x00007f00);
> - I915_WRITE(EG1, 0x0000000e);
> - I915_WRITE(EG2, 0x000e0000);
> - I915_WRITE(EG3, 0x68000300);
> - I915_WRITE(EG4, 0x42000000);
> - I915_WRITE(EG5, 0x00140031);
> - I915_WRITE(EG6, 0);
> - I915_WRITE(EG7, 0);
> -
> - for (i = 0; i < 8; i++)
> - I915_WRITE(PXWL(i), 0);
> -
> - /* Enable PMON + select events */
> - I915_WRITE(ECR, 0x80000019);
> -
> - lcfuse = I915_READ(LCFUSE02);
> -
> - dev_priv->ips.corr = (lcfuse & LCFUSE_HIV_MASK);
> -}
> -
> -void intel_init_gt_powersave(struct drm_i915_private *dev_priv)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> -
> - /* Powersaving is controlled by the host when inside a VM */
> - if (intel_vgpu_active(dev_priv))
> - mkwrite_device_info(dev_priv)->has_rps = false;
> -
> - /* Initialize RPS limits (for userspace) */
> - if (IS_CHERRYVIEW(dev_priv))
> - cherryview_init_gt_powersave(dev_priv);
> - else if (IS_VALLEYVIEW(dev_priv))
> - valleyview_init_gt_powersave(dev_priv);
> - else if (INTEL_GEN(dev_priv) >= 6)
> - gen6_init_rps_frequencies(dev_priv);
> -
> - /* Derive initial user preferences/limits from the hardware limits */
> - rps->max_freq_softlimit = rps->max_freq;
> - rps->min_freq_softlimit = rps->min_freq;
> -
> - /* After setting max-softlimit, find the overclock max freq */
> - if (IS_GEN(dev_priv, 6) ||
> - IS_IVYBRIDGE(dev_priv) || IS_HASWELL(dev_priv)) {
> - u32 params = 0;
> -
> - sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS,
> - &params, NULL);
> - if (params & BIT(31)) { /* OC supported */
> - DRM_DEBUG_DRIVER("Overclocking supported, max: %dMHz, overclock: %dMHz\n",
> - (rps->max_freq & 0xff) * 50,
> - (params & 0xff) * 50);
> - rps->max_freq = params & 0xff;
> - }
> - }
> -
> - /* Finally allow us to boost to max by default */
> - rps->boost_freq = rps->max_freq;
> - rps->idle_freq = rps->min_freq;
> - rps->cur_freq = rps->idle_freq;
> -}
> -
> -void intel_sanitize_gt_powersave(struct drm_i915_private *dev_priv)
> -{
> - dev_priv->gt_pm.rps.enabled = true; /* force RPS disabling */
> - intel_disable_gt_powersave(dev_priv);
> -
> - if (INTEL_GEN(dev_priv) >= 11)
> - gen11_reset_rps_interrupts(dev_priv);
> - else if (INTEL_GEN(dev_priv) >= 6)
> - gen6_reset_rps_interrupts(dev_priv);
> -}
> -
> -static void intel_disable_rps(struct drm_i915_private *dev_priv)
> -{
> - lockdep_assert_held(&dev_priv->gt_pm.rps.lock);
> -
> - if (!dev_priv->gt_pm.rps.enabled)
> - return;
> -
> - if (INTEL_GEN(dev_priv) >= 9)
> - gen9_disable_rps(dev_priv);
> - else if (IS_CHERRYVIEW(dev_priv))
> - cherryview_disable_rps(dev_priv);
> - else if (IS_VALLEYVIEW(dev_priv))
> - valleyview_disable_rps(dev_priv);
> - else if (INTEL_GEN(dev_priv) >= 6)
> - gen6_disable_rps(dev_priv);
> - else if (IS_IRONLAKE_M(dev_priv))
> - ironlake_disable_drps(dev_priv);
> -
> - dev_priv->gt_pm.rps.enabled = false;
> -}
> -
> -void intel_disable_gt_powersave(struct drm_i915_private *dev_priv)
> -{
> - mutex_lock(&dev_priv->gt_pm.rps.lock);
> -
> - intel_disable_rps(dev_priv);
> - if (HAS_LLC(dev_priv))
> - intel_llc_disable(&dev_priv->gt.llc);
> -
> - mutex_unlock(&dev_priv->gt_pm.rps.lock);
> -}
> -
> -static void intel_enable_rps(struct drm_i915_private *dev_priv)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> -
> - lockdep_assert_held(&rps->lock);
> -
> - if (rps->enabled)
> - return;
> -
> - if (IS_CHERRYVIEW(dev_priv)) {
> - cherryview_enable_rps(dev_priv);
> - } else if (IS_VALLEYVIEW(dev_priv)) {
> - valleyview_enable_rps(dev_priv);
> - } else if (INTEL_GEN(dev_priv) >= 9) {
> - gen9_enable_rps(dev_priv);
> - } else if (IS_BROADWELL(dev_priv)) {
> - gen8_enable_rps(dev_priv);
> - } else if (INTEL_GEN(dev_priv) >= 6) {
> - gen6_enable_rps(dev_priv);
> - } else if (IS_IRONLAKE_M(dev_priv)) {
> - ironlake_enable_drps(dev_priv);
> - intel_init_emon(dev_priv);
> - }
> -
> - WARN_ON(rps->max_freq < rps->min_freq);
> - WARN_ON(rps->idle_freq > rps->max_freq);
> -
> - WARN_ON(rps->efficient_freq < rps->min_freq);
> - WARN_ON(rps->efficient_freq > rps->max_freq);
> -
> - rps->enabled = true;
> -}
> -
> -void intel_enable_gt_powersave(struct drm_i915_private *dev_priv)
> -{
> - /* Powersaving is controlled by the host when inside a VM */
> - if (intel_vgpu_active(dev_priv))
> - return;
> -
> - mutex_lock(&dev_priv->gt_pm.rps.lock);
> -
> - if (HAS_RPS(dev_priv))
> - intel_enable_rps(dev_priv);
> -
> - intel_llc_enable(&dev_priv->gt.llc);
> -
> - mutex_unlock(&dev_priv->gt_pm.rps.lock);
> -}
> -
> -static void ibx_init_clock_gating(struct drm_i915_private *dev_priv)
> -{
> - /*
> - * On Ibex Peak and Cougar Point, we need to disable clock
> - * gating for the panel power sequencer or it will fail to
> - * start up when no ports are active.
> - */
> - I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
> -}
> -
> -static void g4x_disable_trickle_feed(struct drm_i915_private *dev_priv)
> -{
> - enum pipe pipe;
> -
> - for_each_pipe(dev_priv, pipe) {
> - I915_WRITE(DSPCNTR(pipe),
> - I915_READ(DSPCNTR(pipe)) |
> - DISPPLANE_TRICKLE_FEED_DISABLE);
> -
> - I915_WRITE(DSPSURF(pipe), I915_READ(DSPSURF(pipe)));
> - POSTING_READ(DSPSURF(pipe));
> - }
> -}
> -
> -static void ilk_init_clock_gating(struct drm_i915_private *dev_priv)
> -{
> - u32 dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE;
> -
> - /*
> - * Required for FBC
> - * WaFbcDisableDpfcClockGating:ilk
> - */
> - dspclk_gate |= ILK_DPFCRUNIT_CLOCK_GATE_DISABLE |
> - ILK_DPFCUNIT_CLOCK_GATE_DISABLE |
> - ILK_DPFDUNIT_CLOCK_GATE_ENABLE;
> -
> - I915_WRITE(PCH_3DCGDIS0,
> - MARIUNIT_CLOCK_GATE_DISABLE |
> - SVSMUNIT_CLOCK_GATE_DISABLE);
> - I915_WRITE(PCH_3DCGDIS1,
> - VFMUNIT_CLOCK_GATE_DISABLE);
> -
> - /*
> - * According to the spec the following bits should be set in
> - * order to enable memory self-refresh
> - * The bit 22/21 of 0x42004
> - * The bit 5 of 0x42020
> - * The bit 15 of 0x45000
> - */
> - I915_WRITE(ILK_DISPLAY_CHICKEN2,
> - (I915_READ(ILK_DISPLAY_CHICKEN2) |
> - ILK_DPARB_GATE | ILK_VSDPFD_FULL));
> - dspclk_gate |= ILK_DPARBUNIT_CLOCK_GATE_ENABLE;
> - I915_WRITE(DISP_ARB_CTL,
> - (I915_READ(DISP_ARB_CTL) |
> - DISP_FBC_WM_DIS));
> -
> - /*
> - * Based on the document from hardware guys the following bits
> - * should be set unconditionally in order to enable FBC.
> - * The bit 22 of 0x42000
> - * The bit 22 of 0x42004
> - * The bit 7,8,9 of 0x42020.
> - */
> - if (IS_IRONLAKE_M(dev_priv)) {
> - /* WaFbcAsynchFlipDisableFbcQueue:ilk */
> - I915_WRITE(ILK_DISPLAY_CHICKEN1,
> - I915_READ(ILK_DISPLAY_CHICKEN1) |
> - ILK_FBCQ_DIS);
> - I915_WRITE(ILK_DISPLAY_CHICKEN2,
> - I915_READ(ILK_DISPLAY_CHICKEN2) |
> - ILK_DPARB_GATE);
> - }
> -
> - I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate);
> -
> - I915_WRITE(ILK_DISPLAY_CHICKEN2,
> - I915_READ(ILK_DISPLAY_CHICKEN2) |
> - ILK_ELPIN_409_SELECT);
> - I915_WRITE(_3D_CHICKEN2,
> - _3D_CHICKEN2_WM_READ_PIPELINED << 16 |
> - _3D_CHICKEN2_WM_READ_PIPELINED);
> -
> - /* WaDisableRenderCachePipelinedFlush:ilk */
> - I915_WRITE(CACHE_MODE_0,
> - _MASKED_BIT_ENABLE(CM0_PIPELINED_RENDER_FLUSH_DISABLE));
> -
> - /* WaDisable_RenderCache_OperationalFlush:ilk */
> - I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE));
> -
> - g4x_disable_trickle_feed(dev_priv);
> -
> - ibx_init_clock_gating(dev_priv);
> -}
> -
> -static void cpt_init_clock_gating(struct drm_i915_private *dev_priv)
> -{
> - enum pipe pipe;
> - u32 val;
> -
> - /*
> - * On Ibex Peak and Cougar Point, we need to disable clock
> - * gating for the panel power sequencer or it will fail to
> - * start up when no ports are active.
> - */
> - I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE |
> - PCH_DPLUNIT_CLOCK_GATE_DISABLE |
> - PCH_CPUNIT_CLOCK_GATE_DISABLE);
> - I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) |
> - DPLS_EDP_PPS_FIX_DIS);
> - /* The below fixes the weird display corruption, a few pixels shifted
> - * downward, on (only) LVDS of some HP laptops with IVY.
> - */
> - for_each_pipe(dev_priv, pipe) {
> - val = I915_READ(TRANS_CHICKEN2(pipe));
> - val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
> - val &= ~TRANS_CHICKEN2_FDI_POLARITY_REVERSED;
> - if (dev_priv->vbt.fdi_rx_polarity_inverted)
> - val |= TRANS_CHICKEN2_FDI_POLARITY_REVERSED;
> - val &= ~TRANS_CHICKEN2_FRAME_START_DELAY_MASK;
> - val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_COUNTER;
> - val &= ~TRANS_CHICKEN2_DISABLE_DEEP_COLOR_MODESWITCH;
> - I915_WRITE(TRANS_CHICKEN2(pipe), val);
> - }
> - /* WADP0ClockGatingDisable */
> - for_each_pipe(dev_priv, pipe) {
> - I915_WRITE(TRANS_CHICKEN1(pipe),
> - TRANS_CHICKEN1_DP0UNIT_GC_DISABLE);
> - }
> -}
> -
> -static void gen6_check_mch_setup(struct drm_i915_private *dev_priv)
> -{
> - u32 tmp;
> -
> - tmp = I915_READ(MCH_SSKPD);
> - if ((tmp & MCH_SSKPD_WM0_MASK) != MCH_SSKPD_WM0_VAL)
> - DRM_DEBUG_KMS("Wrong MCH_SSKPD value: 0x%08x This can cause underruns.\n",
> - tmp);
> -}
> -
> -static void gen6_init_clock_gating(struct drm_i915_private *dev_priv)
> -{
> - u32 dspclk_gate = ILK_VRHUNIT_CLOCK_GATE_DISABLE;
> -
> - I915_WRITE(ILK_DSPCLK_GATE_D, dspclk_gate);
> -
> - I915_WRITE(ILK_DISPLAY_CHICKEN2,
> - I915_READ(ILK_DISPLAY_CHICKEN2) |
> - ILK_ELPIN_409_SELECT);
> -
> - /* WaDisableHiZPlanesWhenMSAAEnabled:snb */
> - I915_WRITE(_3D_CHICKEN,
> - _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB));
> -
> - /* WaDisable_RenderCache_OperationalFlush:snb */
> - I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE));
> -
> - /*
> - * BSpec recoomends 8x4 when MSAA is used,
> - * however in practice 16x4 seems fastest.
> - *
> - * Note that PS/WM thread counts depend on the WIZ hashing
> - * disable bit, which we don't touch here, but it's good
> - * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM).
> - */
> - I915_WRITE(GEN6_GT_MODE,
> - _MASKED_FIELD(GEN6_WIZ_HASHING_MASK, GEN6_WIZ_HASHING_16x4));
> -
> - I915_WRITE(CACHE_MODE_0,
> - _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB));
> -
> - I915_WRITE(GEN6_UCGCTL1,
> - I915_READ(GEN6_UCGCTL1) |
> - GEN6_BLBUNIT_CLOCK_GATE_DISABLE |
> - GEN6_CSUNIT_CLOCK_GATE_DISABLE);
> -
> - /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock
> - * gating disable must be set. Failure to set it results in
> - * flickering pixels due to Z write ordering failures after
> - * some amount of runtime in the Mesa "fire" demo, and Unigine
> - * Sanctuary and Tropics, and apparently anything else with
> - * alpha test or pixel discard.
> - *
> - * According to the spec, bit 11 (RCCUNIT) must also be set,
> - * but we didn't debug actual testcases to find it out.
> - *
> - * WaDisableRCCUnitClockGating:snb
> - * WaDisableRCPBUnitClockGating:snb
> - */
> - I915_WRITE(GEN6_UCGCTL2,
> - GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
> - GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
> -
> - /* WaStripsFansDisableFastClipPerformanceFix:snb */
> - I915_WRITE(_3D_CHICKEN3,
> - _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL));
> -
> - /*
> - * Bspec says:
> - * "This bit must be set if 3DSTATE_CLIP clip mode is set to normal and
> - * 3DSTATE_SF number of SF output attributes is more than 16."
> - */
> - I915_WRITE(_3D_CHICKEN3,
> - _MASKED_BIT_ENABLE(_3D_CHICKEN3_SF_DISABLE_PIPELINED_ATTR_FETCH));
> -
> - /*
> - * According to the spec the following bits should be
> - * set in order to enable memory self-refresh and fbc:
> - * The bit21 and bit22 of 0x42000
> - * The bit21 and bit22 of 0x42004
> - * The bit5 and bit7 of 0x42020
> - * The bit14 of 0x70180
> - * The bit14 of 0x71180
> - *
> - * WaFbcAsynchFlipDisableFbcQueue:snb
> - */
> - I915_WRITE(ILK_DISPLAY_CHICKEN1,
> - I915_READ(ILK_DISPLAY_CHICKEN1) |
> - ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS);
> - I915_WRITE(ILK_DISPLAY_CHICKEN2,
> - I915_READ(ILK_DISPLAY_CHICKEN2) |
> - ILK_DPARB_GATE | ILK_VSDPFD_FULL);
> - I915_WRITE(ILK_DSPCLK_GATE_D,
> - I915_READ(ILK_DSPCLK_GATE_D) |
> - ILK_DPARBUNIT_CLOCK_GATE_ENABLE |
> - ILK_DPFDUNIT_CLOCK_GATE_ENABLE);
> -
> - g4x_disable_trickle_feed(dev_priv);
> -
> - cpt_init_clock_gating(dev_priv);
> -
> - gen6_check_mch_setup(dev_priv);
> -}
> -
> -static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv)
> -{
> - u32 reg = I915_READ(GEN7_FF_THREAD_MODE);
> + u32 reg = I915_READ(GEN7_FF_THREAD_MODE);
>
> /*
> * WaVSThreadDispatchOverride:ivb,vlv
> @@ -8942,90 +7325,8 @@ void intel_init_pm(struct drm_i915_private *dev_priv)
> }
> }
>
> -static int byt_gpu_freq(struct drm_i915_private *dev_priv, int val)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> -
> - /*
> - * N = val - 0xb7
> - * Slow = Fast = GPLL ref * N
> - */
> - return DIV_ROUND_CLOSEST(rps->gpll_ref_freq * (val - 0xb7), 1000);
> -}
> -
> -static int byt_freq_opcode(struct drm_i915_private *dev_priv, int val)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> -
> - return DIV_ROUND_CLOSEST(1000 * val, rps->gpll_ref_freq) + 0xb7;
> -}
> -
> -static int chv_gpu_freq(struct drm_i915_private *dev_priv, int val)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> -
> - /*
> - * N = val / 2
> - * CU (slow) = CU2x (fast) / 2 = GPLL ref * N / 2
> - */
> - return DIV_ROUND_CLOSEST(rps->gpll_ref_freq * val, 2 * 2 * 1000);
> -}
> -
> -static int chv_freq_opcode(struct drm_i915_private *dev_priv, int val)
> -{
> - struct intel_rps *rps = &dev_priv->gt_pm.rps;
> -
> - /* CHV needs even values */
> - return DIV_ROUND_CLOSEST(2 * 1000 * val, rps->gpll_ref_freq) * 2;
> -}
> -
> -int intel_gpu_freq(struct drm_i915_private *dev_priv, int val)
> -{
> - if (INTEL_GEN(dev_priv) >= 9)
> - return DIV_ROUND_CLOSEST(val * GT_FREQUENCY_MULTIPLIER,
> - GEN9_FREQ_SCALER);
> - else if (IS_CHERRYVIEW(dev_priv))
> - return chv_gpu_freq(dev_priv, val);
> - else if (IS_VALLEYVIEW(dev_priv))
> - return byt_gpu_freq(dev_priv, val);
> - else
> - return val * GT_FREQUENCY_MULTIPLIER;
> -}
> -
> -int intel_freq_opcode(struct drm_i915_private *dev_priv, int val)
> -{
> - if (INTEL_GEN(dev_priv) >= 9)
> - return DIV_ROUND_CLOSEST(val * GEN9_FREQ_SCALER,
> - GT_FREQUENCY_MULTIPLIER);
> - else if (IS_CHERRYVIEW(dev_priv))
> - return chv_freq_opcode(dev_priv, val);
> - else if (IS_VALLEYVIEW(dev_priv))
> - return byt_freq_opcode(dev_priv, val);
> - else
> - return DIV_ROUND_CLOSEST(val, GT_FREQUENCY_MULTIPLIER);
> -}
> -
> void intel_pm_setup(struct drm_i915_private *dev_priv)
> {
> - mutex_init(&dev_priv->gt_pm.rps.lock);
> - mutex_init(&dev_priv->gt_pm.rps.power.mutex);
> -
> - atomic_set(&dev_priv->gt_pm.rps.num_waiters, 0);
> -
> dev_priv->runtime_pm.suspended = false;
> atomic_set(&dev_priv->runtime_pm.wakeref_count, 0);
> }
> -
> -u32 intel_get_cagf(struct drm_i915_private *dev_priv, u32 rpstat)
> -{
> - u32 cagf;
> -
> - if (INTEL_GEN(dev_priv) >= 9)
> - cagf = (rpstat & GEN9_CAGF_MASK) >> GEN9_CAGF_SHIFT;
> - else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
> - cagf = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT;
> - else
> - cagf = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
> -
> - return cagf;
> -}
> diff --git a/drivers/gpu/drm/i915/intel_pm.h b/drivers/gpu/drm/i915/intel_pm.h
> index 93d192d0610a..b56e6285d1c3 100644
> --- a/drivers/gpu/drm/i915/intel_pm.h
> +++ b/drivers/gpu/drm/i915/intel_pm.h
> @@ -29,15 +29,6 @@ void intel_update_watermarks(struct intel_crtc *crtc);
> void intel_init_pm(struct drm_i915_private *dev_priv);
> void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv);
> void intel_pm_setup(struct drm_i915_private *dev_priv);
> -void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
> -void intel_gpu_ips_teardown(void);
> -void intel_init_gt_powersave(struct drm_i915_private *dev_priv);
> -void intel_sanitize_gt_powersave(struct drm_i915_private *dev_priv);
> -void intel_enable_gt_powersave(struct drm_i915_private *dev_priv);
> -void intel_disable_gt_powersave(struct drm_i915_private *dev_priv);
> -void gen6_rps_busy(struct drm_i915_private *dev_priv);
> -void gen6_rps_idle(struct drm_i915_private *dev_priv);
> -void gen6_rps_boost(struct i915_request *rq);
> void g4x_wm_get_hw_state(struct drm_i915_private *dev_priv);
> void vlv_wm_get_hw_state(struct drm_i915_private *dev_priv);
> void ilk_wm_get_hw_state(struct drm_i915_private *dev_priv);
> @@ -69,19 +60,6 @@ int skl_check_pipe_max_pixel_rate(struct intel_crtc *intel_crtc,
> void intel_init_ipc(struct drm_i915_private *dev_priv);
> void intel_enable_ipc(struct drm_i915_private *dev_priv);
>
> -int intel_gpu_freq(struct drm_i915_private *dev_priv, int val);
> -int intel_freq_opcode(struct drm_i915_private *dev_priv, int val);
> -
> -u32 intel_get_cagf(struct drm_i915_private *dev_priv, u32 rpstat1);
> -
> -unsigned long i915_chipset_val(struct drm_i915_private *dev_priv);
> -unsigned long i915_mch_val(struct drm_i915_private *dev_priv);
> -unsigned long i915_gfx_val(struct drm_i915_private *dev_priv);
> -void i915_update_gfx_val(struct drm_i915_private *dev_priv);
> -
> -bool ironlake_set_drps(struct drm_i915_private *dev_priv, u8 val);
> -int intel_set_rps(struct drm_i915_private *dev_priv, u8 val);
> -void intel_rps_mark_interactive(struct drm_i915_private *i915, bool interactive);
> bool intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable);
>
> #endif /* __INTEL_PM_H__ */
> --
> 2.23.0