diff options
| -rw-r--r-- | drivers/perf/arm-cmn.c | 151 |
1 files changed, 148 insertions, 3 deletions
diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index 28ab87a6cde4..0e48adce57ef 100644 --- a/drivers/perf/arm-cmn.c +++ b/drivers/perf/arm-cmn.c @@ -5,6 +5,7 @@ #include <linux/acpi.h> #include <linux/bitfield.h> #include <linux/bitops.h> +#include <linux/debugfs.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/io-64-nonatomic-lo-hi.h> @@ -287,6 +288,7 @@ struct arm_cmn { struct hlist_node cpuhp_node; struct pmu pmu; + struct dentry *debug; }; #define to_cmn(p) container_of(p, struct arm_cmn, pmu) @@ -351,6 +353,140 @@ static struct arm_cmn_node *arm_cmn_node(const struct arm_cmn *cmn, return NULL; } +struct dentry *arm_cmn_debugfs; + +#ifdef CONFIG_DEBUG_FS +static const char *arm_cmn_device_type(u8 type) +{ + switch(type) { + case 0x01: return " RN-I |"; + case 0x02: return " RN-D |"; + case 0x04: return " RN-F_B |"; + case 0x05: return "RN-F_B_E|"; + case 0x06: return " RN-F_A |"; + case 0x07: return "RN-F_A_E|"; + case 0x08: return " HN-T |"; + case 0x09: return " HN-I |"; + case 0x0a: return " HN-D |"; + case 0x0c: return " SN-F |"; + case 0x0d: return " SBSX |"; + case 0x0e: return " HN-F |"; + case 0x0f: return " SN-F_E |"; + case 0x10: return " SN-F_D |"; + case 0x11: return " CXHA |"; + case 0x12: return " CXRA |"; + case 0x13: return " CXRH |"; + case 0x14: return " RN-F_D |"; + case 0x15: return "RN-F_D_E|"; + case 0x16: return " RN-F_C |"; + case 0x17: return "RN-F_C_E|"; + case 0x1c: return " MTSX |"; + default: return " |"; + } +} + +static void arm_cmn_show_logid(struct seq_file *s, int x, int y, int p, int d) +{ + struct arm_cmn *cmn = s->private; + struct arm_cmn_node *dn; + + for (dn = cmn->dns; dn->type; dn++) { + struct arm_cmn_nodeid nid = arm_cmn_nid(cmn, dn->id); + + if (dn->type == CMN_TYPE_XP) + continue; + /* Ignore the extra components that will overlap on some ports */ + if (dn->type < CMN_TYPE_HNI) + continue; + + if (nid.x != x || nid.y != y || nid.port != p || nid.dev != d) + continue; + + seq_printf(s, " #%-2d |", dn->logid); + return; + } + seq_puts(s, " |"); +} + +static int arm_cmn_map_show(struct seq_file *s, void *data) +{ + struct arm_cmn *cmn = s->private; + int x, y, p, pmax = fls(cmn->ports_used); + + seq_puts(s, " X"); + for (x = 0; x < cmn->mesh_x; x++) + seq_printf(s, " %d ", x); + seq_puts(s, "\nY P D+"); + y = cmn->mesh_y; + while (y--) { + int xp_base = cmn->mesh_x * y; + u8 port[6][CMN_MAX_DIMENSION]; + + for (x = 0; x < cmn->mesh_x; x++) + seq_puts(s, "--------+"); + + seq_printf(s, "\n%d |", y); + for (x = 0; x < cmn->mesh_x; x++) { + struct arm_cmn_node *xp = cmn->xps + xp_base + x; + void __iomem *base = xp->pmu_base - CMN_PMU_OFFSET; + + port[0][x] = readl_relaxed(base + CMN_MXP__CONNECT_INFO_P0); + port[1][x] = readl_relaxed(base + CMN_MXP__CONNECT_INFO_P1); + port[2][x] = readl_relaxed(base + CMN_MXP__CONNECT_INFO_P2); + port[3][x] = readl_relaxed(base + CMN_MXP__CONNECT_INFO_P3); + port[4][x] = readl_relaxed(base + CMN_MXP__CONNECT_INFO_P4); + port[5][x] = readl_relaxed(base + CMN_MXP__CONNECT_INFO_P5); + seq_printf(s, " XP #%-2d |", xp_base + x); + } + + seq_puts(s, "\n |"); + for (x = 0; x < cmn->mesh_x; x++) { + u8 dtc = cmn->xps[xp_base + x].dtc; + + if (dtc & (dtc - 1)) + seq_puts(s, " DTC ?? |"); + else + seq_printf(s, " DTC %ld |", __ffs(dtc)); + } + seq_puts(s, "\n |"); + for (x = 0; x < cmn->mesh_x; x++) + seq_puts(s, "........|"); + + for (p = 0; p < pmax; p++) { + seq_printf(s, "\n %d |", p); + for (x = 0; x < cmn->mesh_x; x++) + seq_puts(s, arm_cmn_device_type(port[p][x])); + seq_puts(s, "\n 0|"); + for (x = 0; x < cmn->mesh_x; x++) + arm_cmn_show_logid(s, x, y, p, 0); + seq_puts(s, "\n 1|"); + for (x = 0; x < cmn->mesh_x; x++) + arm_cmn_show_logid(s, x, y, p, 1); + } + seq_puts(s, "\n-----+"); + } + for (x = 0; x < cmn->mesh_x; x++) + seq_puts(s, "--------+"); + seq_puts(s, "\n"); + return 0; +} +DEFINE_SHOW_ATTRIBUTE(arm_cmn_map); + +static void arm_cmn_debugfs_init(struct arm_cmn *cmn, int id) +{ + const char *name = "map"; + + if (id > 0) + name = devm_kasprintf(cmn->dev, GFP_KERNEL, "map_%d", id); + if (!name) + return; + + cmn->debug = debugfs_create_file(name, 0444, arm_cmn_debugfs, cmn, &arm_cmn_map_fops); +} +#else +static void arm_cmn_debugfs_init(struct arm_cmn *cmn, int id) {} +#endif + struct arm_cmn_hw_event { struct arm_cmn_node *dn; u64 dtm_idx[2]; @@ -1738,7 +1874,7 @@ static int arm_cmn_probe(struct platform_device *pdev) struct arm_cmn *cmn; const char *name; static atomic_t id; - int err, rootnode; + int err, rootnode, this_id; cmn = devm_kzalloc(&pdev->dev, sizeof(*cmn), GFP_KERNEL); if (!cmn) @@ -1792,7 +1928,8 @@ static int arm_cmn_probe(struct platform_device *pdev) .cancel_txn = arm_cmn_end_txn, }; - name = devm_kasprintf(cmn->dev, GFP_KERNEL, "arm_cmn_%d", atomic_fetch_inc(&id)); + this_id = atomic_fetch_inc(&id); + name = devm_kasprintf(cmn->dev, GFP_KERNEL, "arm_cmn_%d", this_id); if (!name) return -ENOMEM; @@ -1803,6 +1940,8 @@ static int arm_cmn_probe(struct platform_device *pdev) err = perf_pmu_register(&cmn->pmu, name, -1); if (err) cpuhp_state_remove_instance_nocalls(arm_cmn_hp_state, &cmn->cpuhp_node); + else + arm_cmn_debugfs_init(cmn, this_id); return err; } @@ -1815,6 +1954,7 @@ static int arm_cmn_remove(struct platform_device *pdev) perf_pmu_unregister(&cmn->pmu); cpuhp_state_remove_instance_nocalls(arm_cmn_hp_state, &cmn->cpuhp_node); + debugfs_remove(cmn->debug); return 0; } @@ -1857,9 +1997,13 @@ static int __init arm_cmn_init(void) return ret; arm_cmn_hp_state = ret; + arm_cmn_debugfs = debugfs_create_dir("arm-cmn", NULL); + ret = platform_driver_register(&arm_cmn_driver); - if (ret) + if (ret) { cpuhp_remove_multi_state(arm_cmn_hp_state); + debugfs_remove(arm_cmn_debugfs); + } return ret; } @@ -1867,6 +2011,7 @@ static void __exit arm_cmn_exit(void) { platform_driver_unregister(&arm_cmn_driver); cpuhp_remove_multi_state(arm_cmn_hp_state); + debugfs_remove(arm_cmn_debugfs); } module_init(arm_cmn_init); |