1270 lines
32 KiB
C
1270 lines
32 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright(C) 2015 Linaro Limited. All rights reserved.
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* Author: Mathieu Poirier <mathieu.poirier@linaro.org>
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*/
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#include <linux/pid_namespace.h>
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#include <linux/pm_runtime.h>
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#include <linux/sysfs.h>
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#include "coresight-etm.h"
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#include "coresight-priv.h"
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static ssize_t nr_addr_cmp_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->nr_addr_cmp;
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return sprintf(buf, "%#lx\n", val);
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}
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static DEVICE_ATTR_RO(nr_addr_cmp);
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static ssize_t nr_cntr_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{ unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->nr_cntr;
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return sprintf(buf, "%#lx\n", val);
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}
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static DEVICE_ATTR_RO(nr_cntr);
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static ssize_t nr_ctxid_cmp_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->nr_ctxid_cmp;
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return sprintf(buf, "%#lx\n", val);
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}
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static DEVICE_ATTR_RO(nr_ctxid_cmp);
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static ssize_t etmsr_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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unsigned long flags, val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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pm_runtime_get_sync(dev->parent);
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spin_lock_irqsave(&drvdata->spinlock, flags);
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CS_UNLOCK(drvdata->base);
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val = etm_readl(drvdata, ETMSR);
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CS_LOCK(drvdata->base);
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spin_unlock_irqrestore(&drvdata->spinlock, flags);
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pm_runtime_put(dev->parent);
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return sprintf(buf, "%#lx\n", val);
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}
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static DEVICE_ATTR_RO(etmsr);
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static ssize_t reset_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t size)
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{
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int i, ret;
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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ret = kstrtoul(buf, 16, &val);
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if (ret)
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return ret;
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if (val) {
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spin_lock(&drvdata->spinlock);
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memset(config, 0, sizeof(struct etm_config));
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config->mode = ETM_MODE_EXCLUDE;
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config->trigger_event = ETM_DEFAULT_EVENT_VAL;
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for (i = 0; i < drvdata->nr_addr_cmp; i++) {
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config->addr_type[i] = ETM_ADDR_TYPE_NONE;
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}
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etm_set_default(config);
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etm_release_trace_id(drvdata);
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spin_unlock(&drvdata->spinlock);
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}
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return size;
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}
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static DEVICE_ATTR_WO(reset);
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static ssize_t mode_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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val = config->mode;
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return sprintf(buf, "%#lx\n", val);
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}
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static ssize_t mode_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t size)
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{
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int ret;
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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ret = kstrtoul(buf, 16, &val);
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if (ret)
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return ret;
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spin_lock(&drvdata->spinlock);
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config->mode = val & ETM_MODE_ALL;
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if (config->mode & ETM_MODE_EXCLUDE)
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config->enable_ctrl1 |= ETMTECR1_INC_EXC;
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else
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config->enable_ctrl1 &= ~ETMTECR1_INC_EXC;
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if (config->mode & ETM_MODE_CYCACC)
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config->ctrl |= ETMCR_CYC_ACC;
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else
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config->ctrl &= ~ETMCR_CYC_ACC;
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if (config->mode & ETM_MODE_STALL) {
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if (!(drvdata->etmccr & ETMCCR_FIFOFULL)) {
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dev_warn(dev, "stall mode not supported\n");
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ret = -EINVAL;
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goto err_unlock;
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}
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config->ctrl |= ETMCR_STALL_MODE;
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} else
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config->ctrl &= ~ETMCR_STALL_MODE;
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if (config->mode & ETM_MODE_TIMESTAMP) {
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if (!(drvdata->etmccer & ETMCCER_TIMESTAMP)) {
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dev_warn(dev, "timestamp not supported\n");
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ret = -EINVAL;
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goto err_unlock;
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}
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config->ctrl |= ETMCR_TIMESTAMP_EN;
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} else
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config->ctrl &= ~ETMCR_TIMESTAMP_EN;
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if (config->mode & ETM_MODE_CTXID)
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config->ctrl |= ETMCR_CTXID_SIZE;
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else
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config->ctrl &= ~ETMCR_CTXID_SIZE;
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if (config->mode & ETM_MODE_BBROAD)
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config->ctrl |= ETMCR_BRANCH_BROADCAST;
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else
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config->ctrl &= ~ETMCR_BRANCH_BROADCAST;
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if (config->mode & ETM_MODE_RET_STACK)
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config->ctrl |= ETMCR_RETURN_STACK;
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else
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config->ctrl &= ~ETMCR_RETURN_STACK;
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if (config->mode & (ETM_MODE_EXCL_KERN | ETM_MODE_EXCL_USER))
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etm_config_trace_mode(config);
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spin_unlock(&drvdata->spinlock);
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return size;
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err_unlock:
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spin_unlock(&drvdata->spinlock);
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return ret;
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}
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static DEVICE_ATTR_RW(mode);
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static ssize_t trigger_event_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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val = config->trigger_event;
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return sprintf(buf, "%#lx\n", val);
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}
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static ssize_t trigger_event_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t size)
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{
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int ret;
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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ret = kstrtoul(buf, 16, &val);
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if (ret)
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return ret;
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config->trigger_event = val & ETM_EVENT_MASK;
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return size;
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}
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static DEVICE_ATTR_RW(trigger_event);
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static ssize_t enable_event_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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val = config->enable_event;
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return sprintf(buf, "%#lx\n", val);
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}
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static ssize_t enable_event_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t size)
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{
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int ret;
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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ret = kstrtoul(buf, 16, &val);
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if (ret)
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return ret;
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config->enable_event = val & ETM_EVENT_MASK;
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return size;
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}
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static DEVICE_ATTR_RW(enable_event);
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static ssize_t fifofull_level_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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val = config->fifofull_level;
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return sprintf(buf, "%#lx\n", val);
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}
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static ssize_t fifofull_level_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t size)
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{
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int ret;
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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ret = kstrtoul(buf, 16, &val);
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if (ret)
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return ret;
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config->fifofull_level = val;
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return size;
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}
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static DEVICE_ATTR_RW(fifofull_level);
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static ssize_t addr_idx_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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val = config->addr_idx;
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return sprintf(buf, "%#lx\n", val);
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}
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static ssize_t addr_idx_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t size)
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{
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int ret;
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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ret = kstrtoul(buf, 16, &val);
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if (ret)
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return ret;
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if (val >= drvdata->nr_addr_cmp)
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return -EINVAL;
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/*
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* Use spinlock to ensure index doesn't change while it gets
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* dereferenced multiple times within a spinlock block elsewhere.
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*/
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spin_lock(&drvdata->spinlock);
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config->addr_idx = val;
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spin_unlock(&drvdata->spinlock);
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return size;
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}
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static DEVICE_ATTR_RW(addr_idx);
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static ssize_t addr_single_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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u8 idx;
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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spin_lock(&drvdata->spinlock);
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idx = config->addr_idx;
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if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
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config->addr_type[idx] == ETM_ADDR_TYPE_SINGLE)) {
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spin_unlock(&drvdata->spinlock);
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return -EINVAL;
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}
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val = config->addr_val[idx];
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spin_unlock(&drvdata->spinlock);
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return sprintf(buf, "%#lx\n", val);
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}
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static ssize_t addr_single_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t size)
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{
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u8 idx;
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int ret;
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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ret = kstrtoul(buf, 16, &val);
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if (ret)
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return ret;
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spin_lock(&drvdata->spinlock);
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idx = config->addr_idx;
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if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
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config->addr_type[idx] == ETM_ADDR_TYPE_SINGLE)) {
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spin_unlock(&drvdata->spinlock);
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return -EINVAL;
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}
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config->addr_val[idx] = val;
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config->addr_type[idx] = ETM_ADDR_TYPE_SINGLE;
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spin_unlock(&drvdata->spinlock);
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return size;
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}
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static DEVICE_ATTR_RW(addr_single);
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static ssize_t addr_range_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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u8 idx;
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unsigned long val1, val2;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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spin_lock(&drvdata->spinlock);
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idx = config->addr_idx;
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if (idx % 2 != 0) {
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spin_unlock(&drvdata->spinlock);
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return -EPERM;
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}
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if (!((config->addr_type[idx] == ETM_ADDR_TYPE_NONE &&
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config->addr_type[idx + 1] == ETM_ADDR_TYPE_NONE) ||
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(config->addr_type[idx] == ETM_ADDR_TYPE_RANGE &&
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config->addr_type[idx + 1] == ETM_ADDR_TYPE_RANGE))) {
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spin_unlock(&drvdata->spinlock);
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return -EPERM;
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}
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val1 = config->addr_val[idx];
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val2 = config->addr_val[idx + 1];
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spin_unlock(&drvdata->spinlock);
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return sprintf(buf, "%#lx %#lx\n", val1, val2);
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}
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static ssize_t addr_range_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t size)
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{
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u8 idx;
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unsigned long val1, val2;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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if (sscanf(buf, "%lx %lx", &val1, &val2) != 2)
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return -EINVAL;
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/* Lower address comparator cannot have a higher address value */
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if (val1 > val2)
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return -EINVAL;
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spin_lock(&drvdata->spinlock);
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idx = config->addr_idx;
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if (idx % 2 != 0) {
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spin_unlock(&drvdata->spinlock);
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return -EPERM;
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}
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if (!((config->addr_type[idx] == ETM_ADDR_TYPE_NONE &&
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config->addr_type[idx + 1] == ETM_ADDR_TYPE_NONE) ||
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(config->addr_type[idx] == ETM_ADDR_TYPE_RANGE &&
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config->addr_type[idx + 1] == ETM_ADDR_TYPE_RANGE))) {
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spin_unlock(&drvdata->spinlock);
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return -EPERM;
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}
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config->addr_val[idx] = val1;
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config->addr_type[idx] = ETM_ADDR_TYPE_RANGE;
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config->addr_val[idx + 1] = val2;
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config->addr_type[idx + 1] = ETM_ADDR_TYPE_RANGE;
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config->enable_ctrl1 |= (1 << (idx/2));
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spin_unlock(&drvdata->spinlock);
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return size;
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}
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static DEVICE_ATTR_RW(addr_range);
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static ssize_t addr_start_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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u8 idx;
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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spin_lock(&drvdata->spinlock);
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idx = config->addr_idx;
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if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
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config->addr_type[idx] == ETM_ADDR_TYPE_START)) {
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spin_unlock(&drvdata->spinlock);
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return -EPERM;
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}
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val = config->addr_val[idx];
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spin_unlock(&drvdata->spinlock);
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return sprintf(buf, "%#lx\n", val);
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}
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static ssize_t addr_start_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t size)
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{
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u8 idx;
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int ret;
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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ret = kstrtoul(buf, 16, &val);
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if (ret)
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return ret;
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spin_lock(&drvdata->spinlock);
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idx = config->addr_idx;
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if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
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config->addr_type[idx] == ETM_ADDR_TYPE_START)) {
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spin_unlock(&drvdata->spinlock);
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return -EPERM;
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}
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config->addr_val[idx] = val;
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config->addr_type[idx] = ETM_ADDR_TYPE_START;
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config->startstop_ctrl |= (1 << idx);
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config->enable_ctrl1 |= ETMTECR1_START_STOP;
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spin_unlock(&drvdata->spinlock);
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return size;
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}
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static DEVICE_ATTR_RW(addr_start);
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static ssize_t addr_stop_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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u8 idx;
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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spin_lock(&drvdata->spinlock);
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idx = config->addr_idx;
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if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
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config->addr_type[idx] == ETM_ADDR_TYPE_STOP)) {
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spin_unlock(&drvdata->spinlock);
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return -EPERM;
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}
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val = config->addr_val[idx];
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spin_unlock(&drvdata->spinlock);
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return sprintf(buf, "%#lx\n", val);
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}
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|
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static ssize_t addr_stop_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t size)
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|
{
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u8 idx;
|
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int ret;
|
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unsigned long val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etm_config *config = &drvdata->config;
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ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
|
|
config->addr_type[idx] == ETM_ADDR_TYPE_STOP)) {
|
|
spin_unlock(&drvdata->spinlock);
|
|
return -EPERM;
|
|
}
|
|
|
|
config->addr_val[idx] = val;
|
|
config->addr_type[idx] = ETM_ADDR_TYPE_STOP;
|
|
config->startstop_ctrl |= (1 << (idx + 16));
|
|
config->enable_ctrl1 |= ETMTECR1_START_STOP;
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(addr_stop);
|
|
|
|
static ssize_t addr_acctype_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
val = config->addr_acctype[config->addr_idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t addr_acctype_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
config->addr_acctype[config->addr_idx] = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(addr_acctype);
|
|
|
|
static ssize_t cntr_idx_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
val = config->cntr_idx;
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t cntr_idx_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (val >= drvdata->nr_cntr)
|
|
return -EINVAL;
|
|
/*
|
|
* Use spinlock to ensure index doesn't change while it gets
|
|
* dereferenced multiple times within a spinlock block elsewhere.
|
|
*/
|
|
spin_lock(&drvdata->spinlock);
|
|
config->cntr_idx = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(cntr_idx);
|
|
|
|
static ssize_t cntr_rld_val_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
val = config->cntr_rld_val[config->cntr_idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t cntr_rld_val_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
config->cntr_rld_val[config->cntr_idx] = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(cntr_rld_val);
|
|
|
|
static ssize_t cntr_event_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
val = config->cntr_event[config->cntr_idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t cntr_event_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
config->cntr_event[config->cntr_idx] = val & ETM_EVENT_MASK;
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(cntr_event);
|
|
|
|
static ssize_t cntr_rld_event_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
val = config->cntr_rld_event[config->cntr_idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t cntr_rld_event_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
config->cntr_rld_event[config->cntr_idx] = val & ETM_EVENT_MASK;
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(cntr_rld_event);
|
|
|
|
static ssize_t cntr_val_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int i, ret = 0;
|
|
u32 val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
if (!local_read(&drvdata->mode)) {
|
|
spin_lock(&drvdata->spinlock);
|
|
for (i = 0; i < drvdata->nr_cntr; i++)
|
|
ret += sprintf(buf, "counter %d: %x\n",
|
|
i, config->cntr_val[i]);
|
|
spin_unlock(&drvdata->spinlock);
|
|
return ret;
|
|
}
|
|
|
|
for (i = 0; i < drvdata->nr_cntr; i++) {
|
|
val = etm_readl(drvdata, ETMCNTVRn(i));
|
|
ret += sprintf(buf, "counter %d: %x\n", i, val);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t cntr_val_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
config->cntr_val[config->cntr_idx] = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(cntr_val);
|
|
|
|
static ssize_t seq_12_event_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
val = config->seq_12_event;
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t seq_12_event_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
config->seq_12_event = val & ETM_EVENT_MASK;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(seq_12_event);
|
|
|
|
static ssize_t seq_21_event_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
val = config->seq_21_event;
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t seq_21_event_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
config->seq_21_event = val & ETM_EVENT_MASK;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(seq_21_event);
|
|
|
|
static ssize_t seq_23_event_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
val = config->seq_23_event;
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t seq_23_event_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
config->seq_23_event = val & ETM_EVENT_MASK;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(seq_23_event);
|
|
|
|
static ssize_t seq_31_event_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
val = config->seq_31_event;
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t seq_31_event_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
config->seq_31_event = val & ETM_EVENT_MASK;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(seq_31_event);
|
|
|
|
static ssize_t seq_32_event_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
val = config->seq_32_event;
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t seq_32_event_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
config->seq_32_event = val & ETM_EVENT_MASK;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(seq_32_event);
|
|
|
|
static ssize_t seq_13_event_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
val = config->seq_13_event;
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t seq_13_event_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
config->seq_13_event = val & ETM_EVENT_MASK;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(seq_13_event);
|
|
|
|
static ssize_t seq_curr_state_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val, flags;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
if (!local_read(&drvdata->mode)) {
|
|
val = config->seq_curr_state;
|
|
goto out;
|
|
}
|
|
|
|
pm_runtime_get_sync(dev->parent);
|
|
spin_lock_irqsave(&drvdata->spinlock, flags);
|
|
|
|
CS_UNLOCK(drvdata->base);
|
|
val = (etm_readl(drvdata, ETMSQR) & ETM_SQR_MASK);
|
|
CS_LOCK(drvdata->base);
|
|
|
|
spin_unlock_irqrestore(&drvdata->spinlock, flags);
|
|
pm_runtime_put(dev->parent);
|
|
out:
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t seq_curr_state_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (val > ETM_SEQ_STATE_MAX_VAL)
|
|
return -EINVAL;
|
|
|
|
config->seq_curr_state = val;
|
|
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(seq_curr_state);
|
|
|
|
static ssize_t ctxid_idx_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
val = config->ctxid_idx;
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t ctxid_idx_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (val >= drvdata->nr_ctxid_cmp)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Use spinlock to ensure index doesn't change while it gets
|
|
* dereferenced multiple times within a spinlock block elsewhere.
|
|
*/
|
|
spin_lock(&drvdata->spinlock);
|
|
config->ctxid_idx = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(ctxid_idx);
|
|
|
|
static ssize_t ctxid_pid_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
/*
|
|
* Don't use contextID tracing if coming from a PID namespace. See
|
|
* comment in ctxid_pid_store().
|
|
*/
|
|
if (task_active_pid_ns(current) != &init_pid_ns)
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
val = config->ctxid_pid[config->ctxid_idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t ctxid_pid_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long pid;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
/*
|
|
* When contextID tracing is enabled the tracers will insert the
|
|
* value found in the contextID register in the trace stream. But if
|
|
* a process is in a namespace the PID of that process as seen from the
|
|
* namespace won't be what the kernel sees, something that makes the
|
|
* feature confusing and can potentially leak kernel only information.
|
|
* As such refuse to use the feature if @current is not in the initial
|
|
* PID namespace.
|
|
*/
|
|
if (task_active_pid_ns(current) != &init_pid_ns)
|
|
return -EINVAL;
|
|
|
|
ret = kstrtoul(buf, 16, &pid);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
config->ctxid_pid[config->ctxid_idx] = pid;
|
|
spin_unlock(&drvdata->spinlock);
|
|
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(ctxid_pid);
|
|
|
|
static ssize_t ctxid_mask_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
/*
|
|
* Don't use contextID tracing if coming from a PID namespace. See
|
|
* comment in ctxid_pid_store().
|
|
*/
|
|
if (task_active_pid_ns(current) != &init_pid_ns)
|
|
return -EINVAL;
|
|
|
|
val = config->ctxid_mask;
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t ctxid_mask_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
/*
|
|
* Don't use contextID tracing if coming from a PID namespace. See
|
|
* comment in ctxid_pid_store().
|
|
*/
|
|
if (task_active_pid_ns(current) != &init_pid_ns)
|
|
return -EINVAL;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
config->ctxid_mask = val;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(ctxid_mask);
|
|
|
|
static ssize_t sync_freq_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
val = config->sync_freq;
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t sync_freq_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
config->sync_freq = val & ETM_SYNC_MASK;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(sync_freq);
|
|
|
|
static ssize_t timestamp_event_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
val = config->timestamp_event;
|
|
return sprintf(buf, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t timestamp_event_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
int ret;
|
|
unsigned long val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etm_config *config = &drvdata->config;
|
|
|
|
ret = kstrtoul(buf, 16, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
config->timestamp_event = val & ETM_EVENT_MASK;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(timestamp_event);
|
|
|
|
static ssize_t cpu_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int val;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
|
|
val = drvdata->cpu;
|
|
return scnprintf(buf, PAGE_SIZE, "%d\n", val);
|
|
|
|
}
|
|
static DEVICE_ATTR_RO(cpu);
|
|
|
|
static ssize_t traceid_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int trace_id;
|
|
struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
|
|
trace_id = etm_read_alloc_trace_id(drvdata);
|
|
if (trace_id < 0)
|
|
return trace_id;
|
|
|
|
return sysfs_emit(buf, "%#x\n", trace_id);
|
|
}
|
|
static DEVICE_ATTR_RO(traceid);
|
|
|
|
static struct attribute *coresight_etm_attrs[] = {
|
|
&dev_attr_nr_addr_cmp.attr,
|
|
&dev_attr_nr_cntr.attr,
|
|
&dev_attr_nr_ctxid_cmp.attr,
|
|
&dev_attr_etmsr.attr,
|
|
&dev_attr_reset.attr,
|
|
&dev_attr_mode.attr,
|
|
&dev_attr_trigger_event.attr,
|
|
&dev_attr_enable_event.attr,
|
|
&dev_attr_fifofull_level.attr,
|
|
&dev_attr_addr_idx.attr,
|
|
&dev_attr_addr_single.attr,
|
|
&dev_attr_addr_range.attr,
|
|
&dev_attr_addr_start.attr,
|
|
&dev_attr_addr_stop.attr,
|
|
&dev_attr_addr_acctype.attr,
|
|
&dev_attr_cntr_idx.attr,
|
|
&dev_attr_cntr_rld_val.attr,
|
|
&dev_attr_cntr_event.attr,
|
|
&dev_attr_cntr_rld_event.attr,
|
|
&dev_attr_cntr_val.attr,
|
|
&dev_attr_seq_12_event.attr,
|
|
&dev_attr_seq_21_event.attr,
|
|
&dev_attr_seq_23_event.attr,
|
|
&dev_attr_seq_31_event.attr,
|
|
&dev_attr_seq_32_event.attr,
|
|
&dev_attr_seq_13_event.attr,
|
|
&dev_attr_seq_curr_state.attr,
|
|
&dev_attr_ctxid_idx.attr,
|
|
&dev_attr_ctxid_pid.attr,
|
|
&dev_attr_ctxid_mask.attr,
|
|
&dev_attr_sync_freq.attr,
|
|
&dev_attr_timestamp_event.attr,
|
|
&dev_attr_traceid.attr,
|
|
&dev_attr_cpu.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute *coresight_etm_mgmt_attrs[] = {
|
|
coresight_simple_reg32(etmccr, ETMCCR),
|
|
coresight_simple_reg32(etmccer, ETMCCER),
|
|
coresight_simple_reg32(etmscr, ETMSCR),
|
|
coresight_simple_reg32(etmidr, ETMIDR),
|
|
coresight_simple_reg32(etmcr, ETMCR),
|
|
coresight_simple_reg32(etmtraceidr, ETMTRACEIDR),
|
|
coresight_simple_reg32(etmteevr, ETMTEEVR),
|
|
coresight_simple_reg32(etmtssvr, ETMTSSCR),
|
|
coresight_simple_reg32(etmtecr1, ETMTECR1),
|
|
coresight_simple_reg32(etmtecr2, ETMTECR2),
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group coresight_etm_group = {
|
|
.attrs = coresight_etm_attrs,
|
|
};
|
|
|
|
static const struct attribute_group coresight_etm_mgmt_group = {
|
|
.attrs = coresight_etm_mgmt_attrs,
|
|
.name = "mgmt",
|
|
};
|
|
|
|
const struct attribute_group *coresight_etm_groups[] = {
|
|
&coresight_etm_group,
|
|
&coresight_etm_mgmt_group,
|
|
NULL,
|
|
};
|