diff options
| -rw-r--r-- | drivers/soc/qcom/qcom_stats.c | 187 |
1 files changed, 1 insertions, 186 deletions
diff --git a/drivers/soc/qcom/qcom_stats.c b/drivers/soc/qcom/qcom_stats.c index 5ec8a754b22b..0216fc24f2ca 100644 --- a/drivers/soc/qcom/qcom_stats.c +++ b/drivers/soc/qcom/qcom_stats.c @@ -3,7 +3,6 @@ * Copyright (c) 2011-2021, The Linux Foundation. All rights reserved. */ -#include <linux/bitfield.h> #include <linux/debugfs.h> #include <linux/device.h> #include <linux/io.h> @@ -12,7 +11,6 @@ #include <linux/platform_device.h> #include <linux/seq_file.h> -#include <linux/soc/qcom/qcom_aoss.h> #include <linux/soc/qcom/smem.h> #include <clocksource/arm_arch_timer.h> @@ -24,20 +22,8 @@ #define LAST_ENTERED_AT_OFFSET 0x8 #define LAST_EXITED_AT_OFFSET 0x10 #define ACCUMULATED_OFFSET 0x18 -#define DDR_DYNAMIC_OFFSET 0x1c - #define DDR_OFFSET_MASK GENMASK(9, 0) #define CLIENT_VOTES_OFFSET 0x20 -#define ARCH_TIMER_FREQ 19200000 -#define DDR_MAGIC_KEY1 0xA1157A75 /* leetspeak "ALLSTATS" */ -#define DDR_MAX_NUM_ENTRIES 20 - -#define DDR_VOTE_DRV_MAX 18 -#define DDR_VOTE_DRV_ABSENT 0xdeaddead -#define DDR_VOTE_DRV_INVALID 0xffffdead -#define DDR_VOTE_X GENMASK(27, 14) -#define DDR_VOTE_Y GENMASK(13, 0) - struct subsystem_data { const char *name; u32 smem_item; @@ -62,7 +48,6 @@ struct stats_config { bool appended_stats_avail; bool dynamic_offset; bool subsystem_stats_in_smem; - bool ddr_stats; }; struct stats_data { @@ -83,25 +68,6 @@ struct appended_stats { u32 reserved[3]; }; -struct ddr_stats_entry { - u32 name; - u32 count; - u64 dur; -} __packed; - -struct ddr_stats { - u32 key; - u32 entry_count; -#define MAX_DDR_STAT_ENTRIES 20 - struct ddr_stats_entry entry[MAX_DDR_STAT_ENTRIES]; -} __packed; - -struct ddr_stats_data { - struct device *dev; - void __iomem *base; - struct qmp *qmp; -}; - static void qcom_print_stats(struct seq_file *s, const struct sleep_stats *stat) { u64 accumulated = stat->accumulated; @@ -152,108 +118,6 @@ static int qcom_soc_sleep_stats_show(struct seq_file *s, void *unused) return 0; } -#define DDR_NAME_TYPE GENMASK(15, 8) - #define DDR_NAME_TYPE_LPM 0 - #define DDR_NAME_TYPE_FREQ 1 - -#define DDR_NAME_LPM_NAME GENMASK(7, 0) - -#define DDR_NAME_FREQ_MHZ GENMASK(31, 16) -#define DDR_NAME_FREQ_CP_IDX GENMASK(4, 0) -static void qcom_ddr_stats_print(struct seq_file *s, struct ddr_stats_entry *entry) -{ - u32 cp_idx, name; - u8 type; - - type = FIELD_GET(DDR_NAME_TYPE, entry->name); - - switch (type) { - case DDR_NAME_TYPE_LPM: - name = FIELD_GET(DDR_NAME_LPM_NAME, entry->name); - - seq_printf(s, "LPM | Type 0x%2x\tcount: %u\ttime: %llums\n", - name, entry->count, entry->dur); - break; - case DDR_NAME_TYPE_FREQ: - cp_idx = FIELD_GET(DDR_NAME_FREQ_CP_IDX, entry->name); - name = FIELD_GET(DDR_NAME_FREQ_MHZ, entry->name); - - /* Neither 0Mhz nor 0 votes is very interesting */ - if (!name || !entry->count) - return; - - seq_printf(s, "Freq | %dMHz (idx %u)\tcount: %u\ttime: %llums\n", - name, cp_idx, entry->count, entry->dur); - break; - default: - seq_printf(s, "Unknown data chunk (type = 0x%x count = 0x%x dur = 0x%llx)\n", - type, entry->count, entry->dur); - } -} - -static int qcom_ddr_stats_show(struct seq_file *s, void *unused) -{ - struct ddr_stats_data *ddrd = s->private; - struct ddr_stats ddr; - struct ddr_stats_entry *entry = ddr.entry; - u32 entry_count, stats_size; - u32 votes[DDR_VOTE_DRV_MAX]; - int i, ret; - - /* Request a stats sync, it may take some time to update though.. */ - ret = qmp_send(ddrd->qmp, "{class: ddr, action: freqsync}"); - if (ret) { - dev_err(ddrd->dev, "failed to send QMP message\n"); - return ret; - } - - entry_count = readl(ddrd->base + offsetof(struct ddr_stats, entry_count)); - if (entry_count > DDR_MAX_NUM_ENTRIES) - return -EINVAL; - - /* We're not guaranteed to have DDR_MAX_NUM_ENTRIES */ - stats_size = sizeof(ddr); - stats_size -= DDR_MAX_NUM_ENTRIES * sizeof(*entry); - stats_size += entry_count * sizeof(*entry); - - /* Copy and process the stats */ - memcpy_fromio(&ddr, ddrd->base, stats_size); - - for (i = 0; i < ddr.entry_count; i++) { - /* Convert the period to ms */ - entry[i].dur = div_u64(entry[i].dur, ARCH_TIMER_FREQ / MSEC_PER_SEC); - } - - for (i = 0; i < ddr.entry_count; i++) - qcom_ddr_stats_print(s, &entry[i]); - - /* Ask AOSS to dump DDR votes */ - ret = qmp_send(ddrd->qmp, "{class: ddr, res: drvs_ddr_votes}"); - if (ret) { - dev_err(ddrd->dev, "failed to send QMP message\n"); - return ret; - } - - /* Subsystem votes */ - memcpy_fromio(votes, ddrd->base + stats_size, sizeof(u32) * DDR_VOTE_DRV_MAX); - - for (i = 0; i < DDR_VOTE_DRV_MAX; i++) { - u32 ab, ib; - - if (votes[i] == DDR_VOTE_DRV_ABSENT || votes[i] == DDR_VOTE_DRV_INVALID) - ab = ib = votes[i]; - else { - ab = FIELD_GET(DDR_VOTE_X, votes[i]); - ib = FIELD_GET(DDR_VOTE_Y, votes[i]); - } - - seq_printf(s, "Vote | AB = %5u\tIB = %5u\n", ab, ib); - } - - return 0; -} - -DEFINE_SHOW_ATTRIBUTE(qcom_ddr_stats); DEFINE_SHOW_ATTRIBUTE(qcom_soc_sleep_stats); DEFINE_SHOW_ATTRIBUTE(qcom_subsystem_sleep_stats); @@ -316,56 +180,13 @@ static void qcom_create_subsystem_stat_files(struct dentry *root, &qcom_subsystem_sleep_stats_fops); } -static int qcom_create_ddr_stats_files(struct device *dev, - struct dentry *root, - void __iomem *reg, - const struct stats_config *config) -{ - struct ddr_stats_data *ddrd; - u32 key, stats_offset; - struct dentry *dent; - - /* Nothing to do */ - if (!config->ddr_stats) - return 0; - - ddrd = devm_kzalloc(dev, sizeof(*ddrd), GFP_KERNEL); - if (!ddrd) - return dev_err_probe(dev, -ENOMEM, "Couldn't allocate DDR stats data\n"); - - ddrd->dev = dev; - - /* Get the offset of DDR stats */ - stats_offset = readl(reg + DDR_DYNAMIC_OFFSET) & DDR_OFFSET_MASK; - ddrd->base = reg + stats_offset; - - /* Check if DDR stats are present */ - key = readl(ddrd->base); - if (key != DDR_MAGIC_KEY1) - return 0; - - dent = debugfs_create_file("ddr_sleep_stats", 0400, root, ddrd, &qcom_ddr_stats_fops); - if (IS_ERR(dent)) - return PTR_ERR(dent); - - /* QMP is only necessary for DDR votes */ - ddrd->qmp = qmp_get(dev); - if (IS_ERR(ddrd->qmp)) { - dev_err(dev, "Couldn't get QMP mailbox: %ld. DDR votes won't be available.\n", - PTR_ERR(ddrd->qmp)); - debugfs_remove(dent); - } - - return 0; -} - static int qcom_stats_probe(struct platform_device *pdev) { void __iomem *reg; struct dentry *root; const struct stats_config *config; struct stats_data *d; - int i, ret; + int i; config = device_get_match_data(&pdev->dev); if (!config) @@ -387,11 +208,6 @@ static int qcom_stats_probe(struct platform_device *pdev) qcom_create_subsystem_stat_files(root, config); qcom_create_soc_sleep_stat_files(root, reg, d, config); - ret = qcom_create_ddr_stats_files(&pdev->dev, root, reg, config); - if (ret) { - debugfs_remove_recursive(root); - return ret; - }; platform_set_drvdata(pdev, root); @@ -438,7 +254,6 @@ static const struct stats_config rpmh_data = { .appended_stats_avail = false, .dynamic_offset = false, .subsystem_stats_in_smem = true, - .ddr_stats = true, }; static const struct of_device_id qcom_stats_table[] = { |