diff options
author | Xi Pardee <xi.pardee@intel.com> | 2023-06-14 01:53:43 +0300 |
---|---|---|
committer | Hans de Goede <hdegoede@redhat.com> | 2023-06-20 13:51:08 +0300 |
commit | 2bcef4529222424559ac9b45948ee9d82c09d9b5 (patch) | |
tree | 968b801a58692848b0a85e67050607500d83a5de /drivers/platform/x86/intel/pmc | |
parent | 1c709ae12dad6f7e2dd5becfbac0f5141c2e15fd (diff) | |
download | linux-2bcef4529222424559ac9b45948ee9d82c09d9b5.tar.xz |
platform/x86:intel/pmc: Enable debugfs multiple PMC support
Enable debugfs support for multiple PMC. These debugfs attributes
show information for all enabled PMCs.
pch_ip_power_gating_status
substate_status_registers
substate_live_status_registers
ltr_show
ltr_ignore
Signed-off-by: Xi Pardee <xi.pardee@intel.com>
Signed-off-by: Rajvi Jingar <rajvi.jingar@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230613225347.2720665-5-rajvi.jingar@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'drivers/platform/x86/intel/pmc')
-rw-r--r-- | drivers/platform/x86/intel/pmc/core.c | 195 |
1 files changed, 129 insertions, 66 deletions
diff --git a/drivers/platform/x86/intel/pmc/core.c b/drivers/platform/x86/intel/pmc/core.c index 8d774461dd29..5864d2e85706 100644 --- a/drivers/platform/x86/intel/pmc/core.c +++ b/drivers/platform/x86/intel/pmc/core.c @@ -252,7 +252,7 @@ static int pmc_core_lpm_get_arr_size(const struct pmc_bit_map **maps) } static void pmc_core_lpm_display(struct pmc *pmc, struct device *dev, - struct seq_file *s, u32 offset, + struct seq_file *s, u32 offset, int pmc_index, const char *str, const struct pmc_bit_map **maps) { @@ -271,19 +271,19 @@ static void pmc_core_lpm_display(struct pmc *pmc, struct device *dev, for (idx = 0; idx < arr_size; idx++) { if (dev) - dev_info(dev, "\nLPM_%s_%d:\t0x%x\n", str, idx, + dev_info(dev, "\nPMC%d:LPM_%s_%d:\t0x%x\n", pmc_index, str, idx, lpm_regs[idx]); if (s) - seq_printf(s, "\nLPM_%s_%d:\t0x%x\n", str, idx, + seq_printf(s, "\nPMC%d:LPM_%s_%d:\t0x%x\n", pmc_index, str, idx, lpm_regs[idx]); for (index = 0; maps[idx][index].name && index < len; index++) { bit_mask = maps[idx][index].bit_mask; if (dev) - dev_info(dev, "%-30s %-30d\n", + dev_info(dev, "PMC%d:%-30s %-30d\n", pmc_index, maps[idx][index].name, lpm_regs[idx] & bit_mask ? 1 : 0); if (s) - seq_printf(s, "%-30s %-30d\n", + seq_printf(s, "PMC%d:%-30s %-30d\n", pmc_index, maps[idx][index].name, lpm_regs[idx] & bit_mask ? 1 : 0); } @@ -300,32 +300,40 @@ static inline u8 pmc_core_reg_read_byte(struct pmc *pmc, int offset) } static void pmc_core_display_map(struct seq_file *s, int index, int idx, int ip, - u8 pf_reg, const struct pmc_bit_map **pf_map) + int pmc_index, u8 pf_reg, const struct pmc_bit_map **pf_map) { - seq_printf(s, "PCH IP: %-2d - %-32s\tState: %s\n", - ip, pf_map[idx][index].name, + seq_printf(s, "PMC%d:PCH IP: %-2d - %-32s\tState: %s\n", + pmc_index, ip, pf_map[idx][index].name, pf_map[idx][index].bit_mask & pf_reg ? "Off" : "On"); } static int pmc_core_ppfear_show(struct seq_file *s, void *unused) { struct pmc_dev *pmcdev = s->private; - struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN]; - const struct pmc_bit_map **maps = pmc->map->pfear_sts; - u8 pf_regs[PPFEAR_MAX_NUM_ENTRIES]; - int index, iter, idx, ip = 0; + int i; + + for (i = 0; i < ARRAY_SIZE(pmcdev->pmcs); ++i) { + struct pmc *pmc = pmcdev->pmcs[i]; + const struct pmc_bit_map **maps; + u8 pf_regs[PPFEAR_MAX_NUM_ENTRIES]; + int index, iter, idx, ip = 0; + + if (!pmc) + continue; - iter = pmc->map->ppfear0_offset; + maps = pmc->map->pfear_sts; + iter = pmc->map->ppfear0_offset; - for (index = 0; index < pmc->map->ppfear_buckets && - index < PPFEAR_MAX_NUM_ENTRIES; index++, iter++) - pf_regs[index] = pmc_core_reg_read_byte(pmc, iter); + for (index = 0; index < pmc->map->ppfear_buckets && + index < PPFEAR_MAX_NUM_ENTRIES; index++, iter++) + pf_regs[index] = pmc_core_reg_read_byte(pmc, iter); - for (idx = 0; maps[idx]; idx++) { - for (index = 0; maps[idx][index].name && - index < pmc->map->ppfear_buckets * 8; ip++, index++) - pmc_core_display_map(s, index, idx, ip, - pf_regs[index / 8], maps); + for (idx = 0; maps[idx]; idx++) { + for (index = 0; maps[idx][index].name && + index < pmc->map->ppfear_buckets * 8; ip++, index++) + pmc_core_display_map(s, index, idx, ip, i, + pf_regs[index / 8], maps); + } } return 0; @@ -454,26 +462,48 @@ DEFINE_SHOW_ATTRIBUTE(pmc_core_pll); int pmc_core_send_ltr_ignore(struct pmc_dev *pmcdev, u32 value) { - struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN]; - const struct pmc_reg_map *map = pmc->map; + struct pmc *pmc; + const struct pmc_reg_map *map; u32 reg; - int err = 0; + int pmc_index, ltr_index; - mutex_lock(&pmcdev->lock); + ltr_index = value; + /* For platforms with multiple pmcs, ltr index value given by user + * is based on the contiguous indexes from ltr_show output. + * pmc index and ltr index needs to be calculated from it. + */ + for (pmc_index = 0; pmc_index < ARRAY_SIZE(pmcdev->pmcs) && ltr_index > 0; pmc_index++) { + pmc = pmcdev->pmcs[pmc_index]; - if (value > map->ltr_ignore_max) { - err = -EINVAL; - goto out_unlock; + if (!pmc) + continue; + + map = pmc->map; + if (ltr_index <= map->ltr_ignore_max) + break; + + /* Along with IP names, ltr_show map includes CURRENT_PLATFORM + * and AGGREGATED_SYSTEM values per PMC. Take these two index + * values into account in ltr_index calculation. Also, to start + * ltr index from zero for next pmc, subtract it by 1. + */ + ltr_index = ltr_index - (map->ltr_ignore_max + 2) - 1; } + if (pmc_index >= ARRAY_SIZE(pmcdev->pmcs) || ltr_index < 0) + return -EINVAL; + + pr_debug("ltr_ignore for pmc%d: ltr_index:%d\n", pmc_index, ltr_index); + + mutex_lock(&pmcdev->lock); + reg = pmc_core_reg_read(pmc, map->ltr_ignore_offset); - reg |= BIT(value); + reg |= BIT(ltr_index); pmc_core_reg_write(pmc, map->ltr_ignore_offset, reg); -out_unlock: mutex_unlock(&pmcdev->lock); - return err; + return 0; } static ssize_t pmc_core_ltr_ignore_write(struct file *file, @@ -586,36 +616,44 @@ static u32 convert_ltr_scale(u32 val) static int pmc_core_ltr_show(struct seq_file *s, void *unused) { - struct pmc *pmc = s->private; - const struct pmc_bit_map *map = pmc->map->ltr_show_sts; + struct pmc_dev *pmcdev = s->private; u64 decoded_snoop_ltr, decoded_non_snoop_ltr; u32 ltr_raw_data, scale, val; u16 snoop_ltr, nonsnoop_ltr; - int index; + int i, index, ltr_index = 0; - for (index = 0; map[index].name ; index++) { - decoded_snoop_ltr = decoded_non_snoop_ltr = 0; - ltr_raw_data = pmc_core_reg_read(pmc, - map[index].bit_mask); - snoop_ltr = ltr_raw_data & ~MTPMC_MASK; - nonsnoop_ltr = (ltr_raw_data >> 0x10) & ~MTPMC_MASK; - - if (FIELD_GET(LTR_REQ_NONSNOOP, ltr_raw_data)) { - scale = FIELD_GET(LTR_DECODED_SCALE, nonsnoop_ltr); - val = FIELD_GET(LTR_DECODED_VAL, nonsnoop_ltr); - decoded_non_snoop_ltr = val * convert_ltr_scale(scale); - } + for (i = 0; i < ARRAY_SIZE(pmcdev->pmcs); ++i) { + struct pmc *pmc = pmcdev->pmcs[i]; + const struct pmc_bit_map *map; - if (FIELD_GET(LTR_REQ_SNOOP, ltr_raw_data)) { - scale = FIELD_GET(LTR_DECODED_SCALE, snoop_ltr); - val = FIELD_GET(LTR_DECODED_VAL, snoop_ltr); - decoded_snoop_ltr = val * convert_ltr_scale(scale); - } + if (!pmc) + continue; + + map = pmc->map->ltr_show_sts; + for (index = 0; map[index].name; index++) { + decoded_snoop_ltr = decoded_non_snoop_ltr = 0; + ltr_raw_data = pmc_core_reg_read(pmc, + map[index].bit_mask); + snoop_ltr = ltr_raw_data & ~MTPMC_MASK; + nonsnoop_ltr = (ltr_raw_data >> 0x10) & ~MTPMC_MASK; + + if (FIELD_GET(LTR_REQ_NONSNOOP, ltr_raw_data)) { + scale = FIELD_GET(LTR_DECODED_SCALE, nonsnoop_ltr); + val = FIELD_GET(LTR_DECODED_VAL, nonsnoop_ltr); + decoded_non_snoop_ltr = val * convert_ltr_scale(scale); + } + if (FIELD_GET(LTR_REQ_SNOOP, ltr_raw_data)) { + scale = FIELD_GET(LTR_DECODED_SCALE, snoop_ltr); + val = FIELD_GET(LTR_DECODED_VAL, snoop_ltr); + decoded_snoop_ltr = val * convert_ltr_scale(scale); + } - seq_printf(s, "%-32s\tLTR: RAW: 0x%-16x\tNon-Snoop(ns): %-16llu\tSnoop(ns): %-16llu\n", - map[index].name, ltr_raw_data, - decoded_non_snoop_ltr, - decoded_snoop_ltr); + seq_printf(s, "%d\tPMC%d:%-32s\tLTR: RAW: 0x%-16x\tNon-Snoop(ns): %-16llu\tSnoop(ns): %-16llu\n", + ltr_index, i, map[index].name, ltr_raw_data, + decoded_non_snoop_ltr, + decoded_snoop_ltr); + ltr_index++; + } } return 0; } @@ -651,11 +689,19 @@ DEFINE_SHOW_ATTRIBUTE(pmc_core_substate_res); static int pmc_core_substate_sts_regs_show(struct seq_file *s, void *unused) { struct pmc_dev *pmcdev = s->private; - struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN]; - const struct pmc_bit_map **maps = pmc->map->lpm_sts; - u32 offset = pmc->map->lpm_status_offset; + int i; + + for (i = 0; i < ARRAY_SIZE(pmcdev->pmcs); ++i) { + struct pmc *pmc = pmcdev->pmcs[i]; + const struct pmc_bit_map **maps; + u32 offset; - pmc_core_lpm_display(pmc, NULL, s, offset, "STATUS", maps); + if (!pmc) + continue; + maps = pmc->map->lpm_sts; + offset = pmc->map->lpm_status_offset; + pmc_core_lpm_display(pmc, NULL, s, offset, i, "STATUS", maps); + } return 0; } @@ -664,11 +710,19 @@ DEFINE_SHOW_ATTRIBUTE(pmc_core_substate_sts_regs); static int pmc_core_substate_l_sts_regs_show(struct seq_file *s, void *unused) { struct pmc_dev *pmcdev = s->private; - struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN]; - const struct pmc_bit_map **maps = pmc->map->lpm_sts; - u32 offset = pmc->map->lpm_live_status_offset; + int i; + + for (i = 0; i < ARRAY_SIZE(pmcdev->pmcs); ++i) { + struct pmc *pmc = pmcdev->pmcs[i]; + const struct pmc_bit_map **maps; + u32 offset; - pmc_core_lpm_display(pmc, NULL, s, offset, "LIVE_STATUS", maps); + if (!pmc) + continue; + maps = pmc->map->lpm_sts; + offset = pmc->map->lpm_live_status_offset; + pmc_core_lpm_display(pmc, NULL, s, offset, i, "LIVE_STATUS", maps); + } return 0; } @@ -1005,7 +1059,7 @@ static void pmc_core_dbgfs_register(struct pmc_dev *pmcdev) debugfs_create_file("ltr_ignore", 0644, dir, pmcdev, &pmc_core_ltr_ignore_ops); - debugfs_create_file("ltr_show", 0444, dir, primary_pmc, &pmc_core_ltr_fops); + debugfs_create_file("ltr_show", 0444, dir, pmcdev, &pmc_core_ltr_fops); debugfs_create_file("package_cstate_show", 0444, dir, primary_pmc, &pmc_core_pkgc_fops); @@ -1264,6 +1318,7 @@ int pmc_core_resume_common(struct pmc_dev *pmcdev) struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN]; const struct pmc_bit_map **maps = pmc->map->lpm_sts; int offset = pmc->map->lpm_status_offset; + int i; /* Check if the syspend used S0ix */ if (pm_suspend_via_firmware()) @@ -1285,10 +1340,18 @@ int pmc_core_resume_common(struct pmc_dev *pmcdev) /* The real interesting case - S0ix failed - lets ask PMC why. */ dev_warn(dev, "CPU did not enter SLP_S0!!! (S0ix cnt=%llu)\n", pmcdev->s0ix_counter); + if (pmc->map->slps0_dbg_maps) pmc_core_slps0_display(pmc, dev, NULL); - if (pmc->map->lpm_sts) - pmc_core_lpm_display(pmc, dev, NULL, offset, "STATUS", maps); + + for (i = 0; i < ARRAY_SIZE(pmcdev->pmcs); ++i) { + struct pmc *pmc = pmcdev->pmcs[i]; + + if (!pmc) + continue; + if (pmc->map->lpm_sts) + pmc_core_lpm_display(pmc, dev, NULL, offset, i, "STATUS", maps); + } return 0; } |