[PATCH 14/16] drm/i915/guc/slpc: Sysfs hooks for slpc
Michal Wajdeczko
michal.wajdeczko at intel.com
Sat Jul 10 18:20:38 UTC 2021
On 10.07.2021 03:20, Vinay Belgaumkar wrote:
> Update the get/set min/max freq hooks to work for
> slpc case as well. Consolidate helpers for requested/min/max
> frequency get/set to intel_rps where the proper action can
> be taken depending on whether slpc is enabled.
2x s/slpc/SLPC
>
> Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar at intel.com>
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com>
> Signed-off-by: Sujaritha Sundaresan <sujaritha.sundaresan at intel.com>
> ---
> drivers/gpu/drm/i915/gt/intel_rps.c | 135 ++++++++++++++++++++++++++++
> drivers/gpu/drm/i915/gt/intel_rps.h | 5 ++
> drivers/gpu/drm/i915/i915_pmu.c | 2 +-
> drivers/gpu/drm/i915/i915_reg.h | 2 +
> drivers/gpu/drm/i915/i915_sysfs.c | 71 +++------------
> 5 files changed, 154 insertions(+), 61 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_rps.c b/drivers/gpu/drm/i915/gt/intel_rps.c
> index e858eeb2c59d..88ffc5d90730 100644
> --- a/drivers/gpu/drm/i915/gt/intel_rps.c
> +++ b/drivers/gpu/drm/i915/gt/intel_rps.c
> @@ -37,6 +37,12 @@ static struct intel_uncore *rps_to_uncore(struct intel_rps *rps)
> return rps_to_gt(rps)->uncore;
> }
>
> +static struct intel_guc_slpc *rps_to_slpc(struct intel_rps *rps)
> +{
> + struct intel_gt *gt = rps_to_gt(rps);
> + return >->uc.guc.slpc;
either add empty line between decl/code or make it one-liner
> +}
> +
> static bool rps_uses_slpc(struct intel_rps *rps)
> {
> struct intel_gt *gt = rps_to_gt(rps);
> @@ -1960,6 +1966,135 @@ u32 intel_rps_read_actual_frequency(struct intel_rps *rps)
> return freq;
> }
>
> +u32 intel_rps_read_punit_req(struct intel_rps *rps)
> +{
> + struct intel_uncore *uncore = rps_to_uncore(rps);
> +
drop empty line
> + u32 pureq = intel_uncore_read(uncore, GEN6_RPNSWREQ);
> +
> + return pureq;
> +}
> +
> +u32 intel_rps_get_req(struct intel_rps *rps, u32 pureq)
> +{
> + u32 req = pureq >> GEN9_SW_REQ_UNSLICE_RATIO_SHIFT;
> +
> + return req;
> +}
> +
> +u32 intel_rps_read_punit_req_frequency(struct intel_rps *rps)
> +{
> + u32 freq = intel_rps_get_req(rps, intel_rps_read_punit_req(rps));
> +
> + return intel_gpu_freq(rps, freq);
> +}
> +
> +u32 intel_rps_get_requested_frequency(struct intel_rps *rps)
> +{
> + if (rps_uses_slpc(rps))
> + return intel_rps_read_punit_req_frequency(rps);
> + else
> + return intel_gpu_freq(rps, rps->cur_freq);
> +}
> +
> +u32 intel_rps_get_max_frequency(struct intel_rps *rps)
> +{
> + struct intel_guc_slpc *slpc = rps_to_slpc(rps);
> +
> + if (rps_uses_slpc(rps))
> + return slpc->max_freq_softlimit;
> + else
> + return intel_gpu_freq(rps, rps->max_freq_softlimit);
> +}
> +
> +int intel_rps_set_max_frequency(struct intel_rps *rps, u32 val)
> +{
> + struct intel_guc_slpc *slpc = rps_to_slpc(rps);
> + int ret;
> +
> + if (rps_uses_slpc(rps))
> + return intel_guc_slpc_set_max_freq(slpc, val);
> +
> + mutex_lock(&rps->lock);
> +
> + val = intel_freq_opcode(rps, val);
> + if (val < rps->min_freq ||
> + val > rps->max_freq ||
> + val < rps->min_freq_softlimit) {
> + ret = -EINVAL;
> + goto unlock;
> + }
> +
> + if (val > rps->rp0_freq)
> + DRM_DEBUG("User requested overclocking to %d\n",
use drm_dbg
Michal
> + intel_gpu_freq(rps, val));
> +
> + rps->max_freq_softlimit = val;
> +
> + val = clamp_t(int, rps->cur_freq,
> + rps->min_freq_softlimit,
> + rps->max_freq_softlimit);
> +
> + /*
> + * 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.
> + */
> + intel_rps_set(rps, val);
> +
> +unlock:
> + mutex_unlock(&rps->lock);
> +
> + return ret;
> +}
> +
> +u32 intel_rps_get_min_frequency(struct intel_rps *rps)
> +{
> + struct intel_guc_slpc *slpc = rps_to_slpc(rps);
> +
> + if (rps_uses_slpc(rps))
> + return slpc->min_freq_softlimit;
> + else
> + return intel_gpu_freq(rps, rps->min_freq_softlimit);
> +}
> +
> +int intel_rps_set_min_frequency(struct intel_rps *rps, u32 val)
> +{
> + struct intel_guc_slpc *slpc = rps_to_slpc(rps);
> + int ret;
> +
> + if (rps_uses_slpc(rps))
> + return intel_guc_slpc_set_min_freq(slpc, val);
> +
> + mutex_lock(&rps->lock);
> +
> + val = intel_freq_opcode(rps, val);
> + if (val < rps->min_freq ||
> + val > rps->max_freq ||
> + val > rps->max_freq_softlimit) {
> + ret = -EINVAL;
> + goto unlock;
> + }
> +
> + rps->min_freq_softlimit = val;
> +
> + val = clamp_t(int, rps->cur_freq,
> + rps->min_freq_softlimit,
> + rps->max_freq_softlimit);
> +
> + /*
> + * 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.
> + */
> + intel_rps_set(rps, val);
> +
> +unlock:
> + mutex_unlock(&rps->lock);
> +
> + return ret;
> +}
> +
> /* External interface for intel_ips.ko */
>
> static struct drm_i915_private __rcu *ips_mchdev;
> diff --git a/drivers/gpu/drm/i915/gt/intel_rps.h b/drivers/gpu/drm/i915/gt/intel_rps.h
> index 1d2cfc98b510..9a09ff5ebf64 100644
> --- a/drivers/gpu/drm/i915/gt/intel_rps.h
> +++ b/drivers/gpu/drm/i915/gt/intel_rps.h
> @@ -31,6 +31,11 @@ int intel_gpu_freq(struct intel_rps *rps, int val);
> int intel_freq_opcode(struct intel_rps *rps, int val);
> u32 intel_rps_get_cagf(struct intel_rps *rps, u32 rpstat1);
> u32 intel_rps_read_actual_frequency(struct intel_rps *rps);
> +u32 intel_rps_get_requested_frequency(struct intel_rps *rps);
> +u32 intel_rps_get_min_frequency(struct intel_rps *rps);
> +int intel_rps_set_min_frequency(struct intel_rps *rps, u32 val);
> +u32 intel_rps_get_max_frequency(struct intel_rps *rps);
> +int intel_rps_set_max_frequency(struct intel_rps *rps, u32 val);
>
> void gen5_rps_irq_handler(struct intel_rps *rps);
> void gen6_rps_irq_handler(struct intel_rps *rps, u32 pm_iir);
> diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c
> index 34d37d46a126..a896bec18255 100644
> --- a/drivers/gpu/drm/i915/i915_pmu.c
> +++ b/drivers/gpu/drm/i915/i915_pmu.c
> @@ -407,7 +407,7 @@ frequency_sample(struct intel_gt *gt, unsigned int period_ns)
>
> if (pmu->enable & config_mask(I915_PMU_REQUESTED_FREQUENCY)) {
> add_sample_mult(&pmu->sample[__I915_SAMPLE_FREQ_REQ],
> - intel_gpu_freq(rps, rps->cur_freq),
> + intel_rps_get_requested_frequency(rps),
> period_ns / 1000);
> }
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 7d9e90aa3ec0..8ab3c2f8f8e4 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -9195,6 +9195,8 @@ enum {
> #define GEN9_FREQUENCY(x) ((x) << 23)
> #define GEN6_OFFSET(x) ((x) << 19)
> #define GEN6_AGGRESSIVE_TURBO (0 << 15)
> +#define GEN9_SW_REQ_UNSLICE_RATIO_SHIFT 23
> +
> #define GEN6_RC_VIDEO_FREQ _MMIO(0xA00C)
> #define GEN6_RC_CONTROL _MMIO(0xA090)
> #define GEN6_RC_CTL_RC6pp_ENABLE (1 << 16)
> diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
> index 873bf996ceb5..f2eee8491b19 100644
> --- a/drivers/gpu/drm/i915/i915_sysfs.c
> +++ b/drivers/gpu/drm/i915/i915_sysfs.c
> @@ -272,7 +272,7 @@ static ssize_t gt_cur_freq_mhz_show(struct device *kdev,
> struct drm_i915_private *i915 = kdev_minor_to_i915(kdev);
> struct intel_rps *rps = &i915->gt.rps;
>
> - return sysfs_emit(buf, "%d\n", intel_gpu_freq(rps, rps->cur_freq));
> + return sysfs_emit(buf, "%d\n", intel_rps_get_requested_frequency(rps));
> }
>
> static ssize_t gt_boost_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
> @@ -326,9 +326,10 @@ static ssize_t vlv_rpe_freq_mhz_show(struct device *kdev,
> 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;
> + struct intel_gt *gt = &dev_priv->gt;
> + struct intel_rps *rps = >->rps;
>
> - return sysfs_emit(buf, "%d\n", intel_gpu_freq(rps, rps->max_freq_softlimit));
> + return sysfs_emit(buf, "%d\n", intel_rps_get_max_frequency(rps));
> }
>
> static ssize_t gt_max_freq_mhz_store(struct device *kdev,
> @@ -336,7 +337,8 @@ 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.rps;
> + struct intel_gt *gt = &dev_priv->gt;
> + struct intel_rps *rps = >->rps;
> ssize_t ret;
> u32 val;
>
> @@ -344,35 +346,7 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
> if (ret)
> return ret;
>
> - mutex_lock(&rps->lock);
> -
> - val = intel_freq_opcode(rps, val);
> - if (val < rps->min_freq ||
> - val > rps->max_freq ||
> - val < rps->min_freq_softlimit) {
> - ret = -EINVAL;
> - goto unlock;
> - }
> -
> - if (val > rps->rp0_freq)
> - DRM_DEBUG("User requested overclocking to %d\n",
> - intel_gpu_freq(rps, val));
> -
> - rps->max_freq_softlimit = val;
> -
> - val = clamp_t(int, rps->cur_freq,
> - rps->min_freq_softlimit,
> - rps->max_freq_softlimit);
> -
> - /*
> - * 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.
> - */
> - intel_rps_set(rps, val);
> -
> -unlock:
> - mutex_unlock(&rps->lock);
> + ret = intel_rps_set_max_frequency(rps, val);
>
> return ret ?: count;
> }
> @@ -380,9 +354,10 @@ 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;
> + struct intel_gt *gt = &dev_priv->gt;
> + struct intel_rps *rps = >->rps;
>
> - return sysfs_emit(buf, "%d\n", intel_gpu_freq(rps, rps->min_freq_softlimit));
> + return sysfs_emit(buf, "%d\n", intel_rps_get_min_frequency(rps));
> }
>
> static ssize_t gt_min_freq_mhz_store(struct device *kdev,
> @@ -398,31 +373,7 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
> if (ret)
> return ret;
>
> - mutex_lock(&rps->lock);
> -
> - val = intel_freq_opcode(rps, val);
> - if (val < rps->min_freq ||
> - val > rps->max_freq ||
> - val > rps->max_freq_softlimit) {
> - ret = -EINVAL;
> - goto unlock;
> - }
> -
> - rps->min_freq_softlimit = val;
> -
> - val = clamp_t(int, rps->cur_freq,
> - rps->min_freq_softlimit,
> - rps->max_freq_softlimit);
> -
> - /*
> - * 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.
> - */
> - intel_rps_set(rps, val);
> -
> -unlock:
> - mutex_unlock(&rps->lock);
> + ret = intel_rps_set_min_frequency(rps, val);
>
> return ret ?: count;
> }
>
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