diff options
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-etm4x.c | 82 |
1 files changed, 59 insertions, 23 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c index 9f9dd574c8d0..6bd4c8979960 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x.c +++ b/drivers/hwtracing/coresight/coresight-etm4x.c @@ -2196,6 +2196,42 @@ static struct attribute *coresight_etmv4_attrs[] = { NULL, }; +struct etmv4_reg { + void __iomem *addr; + u32 data; +}; + +static void do_smp_cross_read(void *data) +{ + struct etmv4_reg *reg = data; + + reg->data = readl_relaxed(reg->addr); +} + +static u32 etmv4_cross_read(const struct device *dev, u32 offset) +{ + struct etmv4_drvdata *drvdata = dev_get_drvdata(dev); + struct etmv4_reg reg; + + reg.addr = drvdata->base + offset; + + smp_call_function_single(drvdata->cpu, do_smp_cross_read, ®, 1); + return reg.data; +} +#define coresight_cross_read(name, offset) \ +static ssize_t name##_show(struct device *_dev, \ + struct device_attribute *attr, char *buf) \ +{ \ + u32 val; \ + pm_runtime_get_sync(_dev->parent); \ + \ + val = etmv4_cross_read(_dev->parent, offset); \ + \ + pm_runtime_put_sync(_dev->parent); \ + return scnprintf(buf, PAGE_SIZE, "0x%x\n", val); \ +} \ +static DEVICE_ATTR_RO(name) + #define coresight_simple_func(name, offset) \ static ssize_t name##_show(struct device *_dev, \ struct device_attribute *attr, char *buf) \ @@ -2206,17 +2242,17 @@ static ssize_t name##_show(struct device *_dev, \ } \ DEVICE_ATTR_RO(name) -coresight_simple_func(trcoslsr, TRCOSLSR); -coresight_simple_func(trcpdcr, TRCPDCR); -coresight_simple_func(trcpdsr, TRCPDSR); -coresight_simple_func(trclsr, TRCLSR); -coresight_simple_func(trcauthstatus, TRCAUTHSTATUS); -coresight_simple_func(trcdevid, TRCDEVID); -coresight_simple_func(trcdevtype, TRCDEVTYPE); -coresight_simple_func(trcpidr0, TRCPIDR0); -coresight_simple_func(trcpidr1, TRCPIDR1); -coresight_simple_func(trcpidr2, TRCPIDR2); -coresight_simple_func(trcpidr3, TRCPIDR3); +coresight_cross_read(trcoslsr, TRCOSLSR); +coresight_cross_read(trcpdcr, TRCPDCR); +coresight_cross_read(trcpdsr, TRCPDSR); +coresight_cross_read(trclsr, TRCLSR); +coresight_cross_read(trcauthstatus, TRCAUTHSTATUS); +coresight_cross_read(trcdevid, TRCDEVID); +coresight_cross_read(trcdevtype, TRCDEVTYPE); +coresight_cross_read(trcpidr0, TRCPIDR0); +coresight_cross_read(trcpidr1, TRCPIDR1); +coresight_cross_read(trcpidr2, TRCPIDR2); +coresight_cross_read(trcpidr3, TRCPIDR3); static struct attribute *coresight_etmv4_mgmt_attrs[] = { &dev_attr_trcoslsr.attr, @@ -2233,19 +2269,19 @@ static struct attribute *coresight_etmv4_mgmt_attrs[] = { NULL, }; -coresight_simple_func(trcidr0, TRCIDR0); -coresight_simple_func(trcidr1, TRCIDR1); -coresight_simple_func(trcidr2, TRCIDR2); -coresight_simple_func(trcidr3, TRCIDR3); -coresight_simple_func(trcidr4, TRCIDR4); -coresight_simple_func(trcidr5, TRCIDR5); +coresight_cross_read(trcidr0, TRCIDR0); +coresight_cross_read(trcidr1, TRCIDR1); +coresight_cross_read(trcidr2, TRCIDR2); +coresight_cross_read(trcidr3, TRCIDR3); +coresight_cross_read(trcidr4, TRCIDR4); +coresight_cross_read(trcidr5, TRCIDR5); /* trcidr[6,7] are reserved */ -coresight_simple_func(trcidr8, TRCIDR8); -coresight_simple_func(trcidr9, TRCIDR9); -coresight_simple_func(trcidr10, TRCIDR10); -coresight_simple_func(trcidr11, TRCIDR11); -coresight_simple_func(trcidr12, TRCIDR12); -coresight_simple_func(trcidr13, TRCIDR13); +coresight_cross_read(trcidr8, TRCIDR8); +coresight_cross_read(trcidr9, TRCIDR9); +coresight_cross_read(trcidr10, TRCIDR10); +coresight_cross_read(trcidr11, TRCIDR11); +coresight_cross_read(trcidr12, TRCIDR12); +coresight_cross_read(trcidr13, TRCIDR13); static struct attribute *coresight_etmv4_trcidr_attrs[] = { &dev_attr_trcidr0.attr, |