hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8T2RT -------------------------------- Implement the cmax feature, which controls the cache maximum capacity for the PARTID selected by the MPAMCFG_PART_SEL. User can update CMAX settings by the interface {L2,L3}MAX:$domain_id=$value in the schemata file. Signed-off-by: Zeng Heng <zengheng4@huawei.com> --- drivers/platform/mpam/mpam_devices.c | 11 ++++++--- drivers/platform/mpam/mpam_internal.h | 1 + drivers/platform/mpam/mpam_resctrl.c | 34 ++++++++++++++++++++++++--- 3 files changed, 40 insertions(+), 6 deletions(-) diff --git a/drivers/platform/mpam/mpam_devices.c b/drivers/platform/mpam/mpam_devices.c index 78f04b2d2d22..b70a771382c3 100644 --- a/drivers/platform/mpam/mpam_devices.c +++ b/drivers/platform/mpam/mpam_devices.c @@ -1206,6 +1206,14 @@ static void mpam_reprogram_ris_partid(struct mpam_msc_ris *ris, u16 partid, rprops->cpbm_wd); } + if (mpam_has_feature(mpam_feat_ccap_part, rprops)) { + if (mpam_has_feature(mpam_feat_ccap_part, cfg)) + mpam_write_partsel_reg(msc, CMAX, cfg->ca_max); + else + mpam_write_partsel_reg(msc, CMAX, cmax); + + } + if (mpam_has_feature(mpam_feat_cmin, rprops)) { if (mpam_has_feature(mpam_feat_cmin, cfg)) mpam_write_partsel_reg(msc, CMIN, cfg->ca_min); @@ -1238,9 +1246,6 @@ static void mpam_reprogram_ris_partid(struct mpam_msc_ris *ris, u16 partid, if (mpam_has_feature(mpam_feat_mbw_prop, rprops)) mpam_write_partsel_reg(msc, MBW_PROP, bwa_fract); - if (mpam_has_feature(mpam_feat_ccap_part, rprops)) - mpam_write_partsel_reg(msc, CMAX, cmax); - if (mpam_has_feature(mpam_feat_intpri_part_0_low, rprops)) intpri = GENMASK(rprops->intpri_wd - 1, 0); else diff --git a/drivers/platform/mpam/mpam_internal.h b/drivers/platform/mpam/mpam_internal.h index 533c891bc0c5..532f55795ad6 100644 --- a/drivers/platform/mpam/mpam_internal.h +++ b/drivers/platform/mpam/mpam_internal.h @@ -161,6 +161,7 @@ struct mpam_config { mpam_features_t features; u32 cpbm; + u16 ca_max; u16 ca_min; u32 mbw_pbm; diff --git a/drivers/platform/mpam/mpam_resctrl.c b/drivers/platform/mpam/mpam_resctrl.c index 278da1e7836c..d4c770389aee 100644 --- a/drivers/platform/mpam/mpam_resctrl.c +++ b/drivers/platform/mpam/mpam_resctrl.c @@ -68,6 +68,7 @@ bool resctrl_arch_mon_capable(void) return exposed_mon_capable; } +static bool max_capable[RDT_NUM_RESOURCES]; static bool min_capable[RDT_NUM_RESOURCES]; static bool intpri_capable[RDT_NUM_RESOURCES]; bool resctrl_arch_feat_capable(enum resctrl_res_level level, @@ -80,9 +81,7 @@ bool resctrl_arch_feat_capable(enum resctrl_res_level level, break; case FEAT_MAX: - if (level == RDT_RESOURCE_MBA) - return true; - break; + return max_capable[level]; case FEAT_MIN: return min_capable[level]; @@ -101,6 +100,11 @@ const char *resctrl_arch_set_feat_lab(enum resctrl_feat_type feat, unsigned long fflags) { switch (feat) { + case FEAT_MAX: + if (fflags & RFTYPE_RES_MB) + break; + return "MAX"; + case FEAT_MIN: return "MIN"; @@ -811,6 +815,9 @@ static int mpam_resctrl_resource_init(struct mpam_resctrl_res *res) exposed_alloc_capable = true; } + if (mpam_has_feature(mpam_feat_ccap_part, &class->props)) + max_capable[r->rid] = true; + if (mpam_has_feature(mpam_feat_cmin, &class->props)) min_capable[r->rid] = true; @@ -857,6 +864,9 @@ static int mpam_resctrl_resource_init(struct mpam_resctrl_res *res) if (class_has_usable_mba(cprops)) { r->alloc_capable = true; exposed_alloc_capable = true; + + if (mpam_has_feature(mpam_feat_mbw_max, cprops)) + max_capable[r->rid] = true; } if (mpam_has_feature(mpam_feat_mbw_min, cprops)) @@ -979,6 +989,12 @@ u32 resctrl_arch_get_config(struct rdt_resource *r, struct rdt_domain *d, (feat == FEAT_PBM)) { configured_by = mpam_feat_cpor_part; break; + + } else if (mpam_has_feature(mpam_feat_ccap_part, cprops) && + (feat == FEAT_MAX)) { + configured_by = mpam_feat_ccap_part; + break; + } else if (mpam_has_feature(mpam_feat_cmin, cprops) && (feat == FEAT_MIN)) { configured_by = mpam_feat_cmin; @@ -1015,6 +1031,11 @@ u32 resctrl_arch_get_config(struct rdt_resource *r, struct rdt_domain *d, if (!r->alloc_capable || partid >= resctrl_arch_get_num_closid(r) || !mpam_has_feature(configured_by, cfg)) { + + if ((configured_by == mpam_feat_ccap_part) || + (configured_by == mpam_feat_mbw_max)) + return MAX_MBA_BW; + if ((configured_by == mpam_feat_cmin) || (configured_by == mpam_feat_mbw_min)) return 0; @@ -1033,6 +1054,8 @@ u32 resctrl_arch_get_config(struct rdt_resource *r, struct rdt_domain *d, case mpam_feat_cpor_part: /* TODO: Scaling is not yet supported */ return cfg->cpbm; + case mpam_feat_ccap_part: + return mbw_max_to_percent(cfg->ca_max, cprops->cmax_wd); case mpam_feat_cmin: return mbw_max_to_percent(cfg->ca_min, cprops->cmax_wd); case mpam_feat_mbw_part: @@ -1084,6 +1107,11 @@ int resctrl_arch_update_one(struct rdt_resource *r, struct rdt_domain *d, u32 cl cfg.cpbm = cfg_val; mpam_set_feature(mpam_feat_cpor_part, &cfg); break; + } else if (mpam_has_feature(mpam_feat_ccap_part, cprops) && + (f == FEAT_MAX)) { + cfg.ca_max = percent_to_mbw_max(cfg_val, cprops->cmax_wd); + mpam_set_feature(mpam_feat_ccap_part, &cfg); + break; } else if (mpam_has_feature(mpam_feat_cmin, cprops) && (f == FEAT_MIN)) { cfg.ca_min = percent_to_mbw_max(cfg_val, cprops->cmax_wd); -- 2.25.1