2176 lines
57 KiB
C
2176 lines
57 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-etm4x.h"
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#include "coresight-priv.h"
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static int etm4_set_mode_exclude(struct etmv4_drvdata *drvdata, bool exclude)
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{
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u8 idx;
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struct etmv4_config *config = &drvdata->config;
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idx = config->addr_idx;
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/*
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* TRCACATRn.TYPE bit[1:0]: type of comparison
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* the trace unit performs
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*/
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if (BMVAL(config->addr_acc[idx], 0, 1) == ETM_INSTR_ADDR) {
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if (idx % 2 != 0)
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return -EINVAL;
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/*
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* We are performing instruction address comparison. Set the
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* relevant bit of ViewInst Include/Exclude Control register
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* for corresponding address comparator pair.
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*/
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if (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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return -EINVAL;
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if (exclude == true) {
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/*
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* Set exclude bit and unset the include bit
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* corresponding to comparator pair
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*/
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config->viiectlr |= BIT(idx / 2 + 16);
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config->viiectlr &= ~BIT(idx / 2);
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} else {
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/*
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* Set include bit and unset exclude bit
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* corresponding to comparator pair
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*/
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config->viiectlr |= BIT(idx / 2);
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config->viiectlr &= ~BIT(idx / 2 + 16);
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}
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}
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return 0;
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}
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static ssize_t nr_pe_cmp_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->nr_pe_cmp;
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return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
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}
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static DEVICE_ATTR_RO(nr_pe_cmp);
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static ssize_t nr_addr_cmp_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->nr_addr_cmp;
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return scnprintf(buf, PAGE_SIZE, "%#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,
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char *buf)
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{
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->nr_cntr;
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return scnprintf(buf, PAGE_SIZE, "%#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_ext_inp_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->nr_ext_inp;
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return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
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}
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static DEVICE_ATTR_RO(nr_ext_inp);
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static ssize_t numcidc_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->numcidc;
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return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
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}
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static DEVICE_ATTR_RO(numcidc);
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static ssize_t numvmidc_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->numvmidc;
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return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
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}
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static DEVICE_ATTR_RO(numvmidc);
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static ssize_t nrseqstate_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->nrseqstate;
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return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
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}
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static DEVICE_ATTR_RO(nrseqstate);
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static ssize_t nr_resource_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->nr_resource;
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return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
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}
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static DEVICE_ATTR_RO(nr_resource);
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static ssize_t nr_ss_cmp_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->nr_ss_cmp;
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return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
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}
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static DEVICE_ATTR_RO(nr_ss_cmp);
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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;
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etmv4_config *config = &drvdata->config;
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if (kstrtoul(buf, 16, &val))
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return -EINVAL;
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spin_lock(&drvdata->spinlock);
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if (val)
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config->mode = 0x0;
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/* Disable data tracing: do not trace load and store data transfers */
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config->mode &= ~(ETM_MODE_LOAD | ETM_MODE_STORE);
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config->cfg &= ~(BIT(1) | BIT(2));
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/* Disable data value and data address tracing */
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config->mode &= ~(ETM_MODE_DATA_TRACE_ADDR |
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ETM_MODE_DATA_TRACE_VAL);
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config->cfg &= ~(BIT(16) | BIT(17));
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/* Disable all events tracing */
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config->eventctrl0 = 0x0;
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config->eventctrl1 = 0x0;
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/* Disable timestamp event */
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config->ts_ctrl = 0x0;
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/* Disable stalling */
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config->stall_ctrl = 0x0;
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/* Reset trace synchronization period to 2^8 = 256 bytes*/
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if (drvdata->syncpr == false)
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config->syncfreq = 0x8;
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/*
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* Enable ViewInst to trace everything with start-stop logic in
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* started state. ARM recommends start-stop logic is set before
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* each trace run.
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*/
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config->vinst_ctrl |= BIT(0);
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if (drvdata->nr_addr_cmp == true) {
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config->mode |= ETM_MODE_VIEWINST_STARTSTOP;
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/* SSSTATUS, bit[9] */
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config->vinst_ctrl |= BIT(9);
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}
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/* No address range filtering for ViewInst */
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config->viiectlr = 0x0;
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/* No start-stop filtering for ViewInst */
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config->vissctlr = 0x0;
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/* Disable seq events */
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for (i = 0; i < drvdata->nrseqstate-1; i++)
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config->seq_ctrl[i] = 0x0;
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config->seq_rst = 0x0;
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config->seq_state = 0x0;
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/* Disable external input events */
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config->ext_inp = 0x0;
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config->cntr_idx = 0x0;
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for (i = 0; i < drvdata->nr_cntr; i++) {
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config->cntrldvr[i] = 0x0;
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config->cntr_ctrl[i] = 0x0;
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config->cntr_val[i] = 0x0;
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}
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config->res_idx = 0x0;
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for (i = 0; i < drvdata->nr_resource; i++)
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config->res_ctrl[i] = 0x0;
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for (i = 0; i < drvdata->nr_ss_cmp; i++) {
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config->ss_ctrl[i] = 0x0;
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config->ss_pe_cmp[i] = 0x0;
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}
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config->addr_idx = 0x0;
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for (i = 0; i < drvdata->nr_addr_cmp * 2; i++) {
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config->addr_val[i] = 0x0;
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config->addr_acc[i] = 0x0;
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config->addr_type[i] = ETM_ADDR_TYPE_NONE;
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}
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config->ctxid_idx = 0x0;
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for (i = 0; i < drvdata->numcidc; i++)
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config->ctxid_pid[i] = 0x0;
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config->ctxid_mask0 = 0x0;
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config->ctxid_mask1 = 0x0;
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config->vmid_idx = 0x0;
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for (i = 0; i < drvdata->numvmidc; i++)
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config->vmid_val[i] = 0x0;
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config->vmid_mask0 = 0x0;
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config->vmid_mask1 = 0x0;
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drvdata->trcid = drvdata->cpu + 1;
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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_WO(reset);
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static ssize_t mode_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etmv4_config *config = &drvdata->config;
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val = config->mode;
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return scnprintf(buf, PAGE_SIZE, "%#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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unsigned long val, mode;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etmv4_config *config = &drvdata->config;
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if (kstrtoul(buf, 16, &val))
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return -EINVAL;
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spin_lock(&drvdata->spinlock);
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config->mode = val & ETMv4_MODE_ALL;
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if (config->mode & ETM_MODE_EXCLUDE)
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etm4_set_mode_exclude(drvdata, true);
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else
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etm4_set_mode_exclude(drvdata, false);
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if (drvdata->instrp0 == true) {
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/* start by clearing instruction P0 field */
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config->cfg &= ~(BIT(1) | BIT(2));
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if (config->mode & ETM_MODE_LOAD)
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/* 0b01 Trace load instructions as P0 instructions */
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config->cfg |= BIT(1);
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if (config->mode & ETM_MODE_STORE)
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/* 0b10 Trace store instructions as P0 instructions */
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config->cfg |= BIT(2);
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if (config->mode & ETM_MODE_LOAD_STORE)
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/*
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* 0b11 Trace load and store instructions
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* as P0 instructions
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*/
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config->cfg |= BIT(1) | BIT(2);
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}
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/* bit[3], Branch broadcast mode */
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if ((config->mode & ETM_MODE_BB) && (drvdata->trcbb == true))
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config->cfg |= BIT(3);
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else
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config->cfg &= ~BIT(3);
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/* bit[4], Cycle counting instruction trace bit */
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if ((config->mode & ETMv4_MODE_CYCACC) &&
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(drvdata->trccci == true))
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config->cfg |= BIT(4);
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else
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config->cfg &= ~BIT(4);
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/* bit[6], Context ID tracing bit */
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if ((config->mode & ETMv4_MODE_CTXID) && (drvdata->ctxid_size))
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config->cfg |= BIT(6);
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else
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config->cfg &= ~BIT(6);
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if ((config->mode & ETM_MODE_VMID) && (drvdata->vmid_size))
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config->cfg |= BIT(7);
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else
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config->cfg &= ~BIT(7);
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/* bits[10:8], Conditional instruction tracing bit */
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mode = ETM_MODE_COND(config->mode);
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if (drvdata->trccond == true) {
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config->cfg &= ~(BIT(8) | BIT(9) | BIT(10));
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config->cfg |= mode << 8;
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}
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/* bit[11], Global timestamp tracing bit */
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if ((config->mode & ETMv4_MODE_TIMESTAMP) && (drvdata->ts_size))
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config->cfg |= BIT(11);
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else
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config->cfg &= ~BIT(11);
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/* bit[12], Return stack enable bit */
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if ((config->mode & ETM_MODE_RETURNSTACK) &&
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(drvdata->retstack == true))
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config->cfg |= BIT(12);
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else
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config->cfg &= ~BIT(12);
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/* bits[14:13], Q element enable field */
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mode = ETM_MODE_QELEM(config->mode);
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/* start by clearing QE bits */
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config->cfg &= ~(BIT(13) | BIT(14));
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/* if supported, Q elements with instruction counts are enabled */
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if ((mode & BIT(0)) && (drvdata->q_support & BIT(0)))
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config->cfg |= BIT(13);
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/*
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* if supported, Q elements with and without instruction
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* counts are enabled
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*/
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if ((mode & BIT(1)) && (drvdata->q_support & BIT(1)))
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config->cfg |= BIT(14);
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/* bit[11], AMBA Trace Bus (ATB) trigger enable bit */
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if ((config->mode & ETM_MODE_ATB_TRIGGER) &&
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(drvdata->atbtrig == true))
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config->eventctrl1 |= BIT(11);
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else
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config->eventctrl1 &= ~BIT(11);
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/* bit[12], Low-power state behavior override bit */
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if ((config->mode & ETM_MODE_LPOVERRIDE) &&
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(drvdata->lpoverride == true))
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config->eventctrl1 |= BIT(12);
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else
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config->eventctrl1 &= ~BIT(12);
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/* bit[8], Instruction stall bit */
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if (config->mode & ETM_MODE_ISTALL_EN)
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config->stall_ctrl |= BIT(8);
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else
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config->stall_ctrl &= ~BIT(8);
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/* bit[10], Prioritize instruction trace bit */
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if (config->mode & ETM_MODE_INSTPRIO)
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config->stall_ctrl |= BIT(10);
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else
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config->stall_ctrl &= ~BIT(10);
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/* bit[13], Trace overflow prevention bit */
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if ((config->mode & ETM_MODE_NOOVERFLOW) &&
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(drvdata->nooverflow == true))
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config->stall_ctrl |= BIT(13);
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else
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config->stall_ctrl &= ~BIT(13);
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/* bit[9] Start/stop logic control bit */
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if (config->mode & ETM_MODE_VIEWINST_STARTSTOP)
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config->vinst_ctrl |= BIT(9);
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else
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config->vinst_ctrl &= ~BIT(9);
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/* bit[10], Whether a trace unit must trace a Reset exception */
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if (config->mode & ETM_MODE_TRACE_RESET)
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config->vinst_ctrl |= BIT(10);
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else
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config->vinst_ctrl &= ~BIT(10);
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/* bit[11], Whether a trace unit must trace a system error exception */
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if ((config->mode & ETM_MODE_TRACE_ERR) &&
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(drvdata->trc_error == true))
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config->vinst_ctrl |= BIT(11);
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else
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config->vinst_ctrl &= ~BIT(11);
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if (config->mode & (ETM_MODE_EXCL_KERN | ETM_MODE_EXCL_USER))
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etm4_config_trace_mode(config);
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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(mode);
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static ssize_t pe_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etmv4_config *config = &drvdata->config;
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val = config->pe_sel;
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return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
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}
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static ssize_t pe_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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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etmv4_config *config = &drvdata->config;
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if (kstrtoul(buf, 16, &val))
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return -EINVAL;
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spin_lock(&drvdata->spinlock);
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if (val > drvdata->nr_pe) {
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spin_unlock(&drvdata->spinlock);
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return -EINVAL;
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}
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config->pe_sel = 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(pe);
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static ssize_t event_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etmv4_config *config = &drvdata->config;
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val = config->eventctrl0;
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return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
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}
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static ssize_t 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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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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struct etmv4_config *config = &drvdata->config;
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if (kstrtoul(buf, 16, &val))
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return -EINVAL;
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spin_lock(&drvdata->spinlock);
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switch (drvdata->nr_event) {
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case 0x0:
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/* EVENT0, bits[7:0] */
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config->eventctrl0 = val & 0xFF;
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break;
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case 0x1:
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/* EVENT1, bits[15:8] */
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config->eventctrl0 = val & 0xFFFF;
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break;
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case 0x2:
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/* EVENT2, bits[23:16] */
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config->eventctrl0 = val & 0xFFFFFF;
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|
break;
|
|
case 0x3:
|
|
/* EVENT3, bits[31:24] */
|
|
config->eventctrl0 = val;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(event);
|
|
|
|
static ssize_t event_instren_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = BMVAL(config->eventctrl1, 0, 3);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t event_instren_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
/* start by clearing all instruction event enable bits */
|
|
config->eventctrl1 &= ~(BIT(0) | BIT(1) | BIT(2) | BIT(3));
|
|
switch (drvdata->nr_event) {
|
|
case 0x0:
|
|
/* generate Event element for event 1 */
|
|
config->eventctrl1 |= val & BIT(1);
|
|
break;
|
|
case 0x1:
|
|
/* generate Event element for event 1 and 2 */
|
|
config->eventctrl1 |= val & (BIT(0) | BIT(1));
|
|
break;
|
|
case 0x2:
|
|
/* generate Event element for event 1, 2 and 3 */
|
|
config->eventctrl1 |= val & (BIT(0) | BIT(1) | BIT(2));
|
|
break;
|
|
case 0x3:
|
|
/* generate Event element for all 4 events */
|
|
config->eventctrl1 |= val & 0xF;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(event_instren);
|
|
|
|
static ssize_t event_ts_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->ts_ctrl;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t event_ts_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if (!drvdata->ts_size)
|
|
return -EINVAL;
|
|
|
|
config->ts_ctrl = val & ETMv4_EVENT_MASK;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(event_ts);
|
|
|
|
static ssize_t syncfreq_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->syncfreq;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t syncfreq_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if (drvdata->syncpr == true)
|
|
return -EINVAL;
|
|
|
|
config->syncfreq = val & ETMv4_SYNC_MASK;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(syncfreq);
|
|
|
|
static ssize_t cyc_threshold_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->ccctlr;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t cyc_threshold_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if (val < drvdata->ccitmin)
|
|
return -EINVAL;
|
|
|
|
config->ccctlr = val & ETM_CYC_THRESHOLD_MASK;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(cyc_threshold);
|
|
|
|
static ssize_t bb_ctrl_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->bb_ctrl;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t bb_ctrl_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if (drvdata->trcbb == false)
|
|
return -EINVAL;
|
|
if (!drvdata->nr_addr_cmp)
|
|
return -EINVAL;
|
|
/*
|
|
* Bit[7:0] selects which address range comparator is used for
|
|
* branch broadcast control.
|
|
*/
|
|
if (BMVAL(val, 0, 7) > drvdata->nr_addr_cmp)
|
|
return -EINVAL;
|
|
|
|
config->bb_ctrl = val;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(bb_ctrl);
|
|
|
|
static ssize_t event_vinst_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->vinst_ctrl & ETMv4_EVENT_MASK;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t event_vinst_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
val &= ETMv4_EVENT_MASK;
|
|
config->vinst_ctrl &= ~ETMv4_EVENT_MASK;
|
|
config->vinst_ctrl |= val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(event_vinst);
|
|
|
|
static ssize_t s_exlevel_vinst_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = BMVAL(config->vinst_ctrl, 16, 19);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t s_exlevel_vinst_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
/* clear all EXLEVEL_S bits (bit[18] is never implemented) */
|
|
config->vinst_ctrl &= ~(BIT(16) | BIT(17) | BIT(19));
|
|
/* enable instruction tracing for corresponding exception level */
|
|
val &= drvdata->s_ex_level;
|
|
config->vinst_ctrl |= (val << 16);
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(s_exlevel_vinst);
|
|
|
|
static ssize_t ns_exlevel_vinst_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
/* EXLEVEL_NS, bits[23:20] */
|
|
val = BMVAL(config->vinst_ctrl, 20, 23);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t ns_exlevel_vinst_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
/* clear EXLEVEL_NS bits (bit[23] is never implemented */
|
|
config->vinst_ctrl &= ~(BIT(20) | BIT(21) | BIT(22));
|
|
/* enable instruction tracing for corresponding exception level */
|
|
val &= drvdata->ns_ex_level;
|
|
config->vinst_ctrl |= (val << 20);
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(ns_exlevel_vinst);
|
|
|
|
static ssize_t addr_idx_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->addr_idx;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t addr_idx_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if (val >= drvdata->nr_addr_cmp * 2)
|
|
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->addr_idx = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(addr_idx);
|
|
|
|
static ssize_t addr_instdatatype_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
ssize_t len;
|
|
u8 val, idx;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
val = BMVAL(config->addr_acc[idx], 0, 1);
|
|
len = scnprintf(buf, PAGE_SIZE, "%s\n",
|
|
val == ETM_INSTR_ADDR ? "instr" :
|
|
(val == ETM_DATA_LOAD_ADDR ? "data_load" :
|
|
(val == ETM_DATA_STORE_ADDR ? "data_store" :
|
|
"data_load_store")));
|
|
spin_unlock(&drvdata->spinlock);
|
|
return len;
|
|
}
|
|
|
|
static ssize_t addr_instdatatype_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
char str[20] = "";
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (strlen(buf) >= 20)
|
|
return -EINVAL;
|
|
if (sscanf(buf, "%s", str) != 1)
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
if (!strcmp(str, "instr"))
|
|
/* TYPE, bits[1:0] */
|
|
config->addr_acc[idx] &= ~(BIT(0) | BIT(1));
|
|
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(addr_instdatatype);
|
|
|
|
static ssize_t addr_single_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
idx = config->addr_idx;
|
|
spin_lock(&drvdata->spinlock);
|
|
if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
|
|
config->addr_type[idx] == ETM_ADDR_TYPE_SINGLE)) {
|
|
spin_unlock(&drvdata->spinlock);
|
|
return -EPERM;
|
|
}
|
|
val = (unsigned long)config->addr_val[idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t addr_single_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
|
|
config->addr_type[idx] == ETM_ADDR_TYPE_SINGLE)) {
|
|
spin_unlock(&drvdata->spinlock);
|
|
return -EPERM;
|
|
}
|
|
|
|
config->addr_val[idx] = (u64)val;
|
|
config->addr_type[idx] = ETM_ADDR_TYPE_SINGLE;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(addr_single);
|
|
|
|
static ssize_t addr_range_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
u8 idx;
|
|
unsigned long val1, val2;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
if (idx % 2 != 0) {
|
|
spin_unlock(&drvdata->spinlock);
|
|
return -EPERM;
|
|
}
|
|
if (!((config->addr_type[idx] == ETM_ADDR_TYPE_NONE &&
|
|
config->addr_type[idx + 1] == ETM_ADDR_TYPE_NONE) ||
|
|
(config->addr_type[idx] == ETM_ADDR_TYPE_RANGE &&
|
|
config->addr_type[idx + 1] == ETM_ADDR_TYPE_RANGE))) {
|
|
spin_unlock(&drvdata->spinlock);
|
|
return -EPERM;
|
|
}
|
|
|
|
val1 = (unsigned long)config->addr_val[idx];
|
|
val2 = (unsigned long)config->addr_val[idx + 1];
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx %#lx\n", val1, val2);
|
|
}
|
|
|
|
static ssize_t addr_range_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
unsigned long val1, val2;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (sscanf(buf, "%lx %lx", &val1, &val2) != 2)
|
|
return -EINVAL;
|
|
/* lower address comparator cannot have a higher address value */
|
|
if (val1 > val2)
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
if (idx % 2 != 0) {
|
|
spin_unlock(&drvdata->spinlock);
|
|
return -EPERM;
|
|
}
|
|
|
|
if (!((config->addr_type[idx] == ETM_ADDR_TYPE_NONE &&
|
|
config->addr_type[idx + 1] == ETM_ADDR_TYPE_NONE) ||
|
|
(config->addr_type[idx] == ETM_ADDR_TYPE_RANGE &&
|
|
config->addr_type[idx + 1] == ETM_ADDR_TYPE_RANGE))) {
|
|
spin_unlock(&drvdata->spinlock);
|
|
return -EPERM;
|
|
}
|
|
|
|
config->addr_val[idx] = (u64)val1;
|
|
config->addr_type[idx] = ETM_ADDR_TYPE_RANGE;
|
|
config->addr_val[idx + 1] = (u64)val2;
|
|
config->addr_type[idx + 1] = ETM_ADDR_TYPE_RANGE;
|
|
/*
|
|
* Program include or exclude control bits for vinst or vdata
|
|
* whenever we change addr comparators to ETM_ADDR_TYPE_RANGE
|
|
*/
|
|
if (config->mode & ETM_MODE_EXCLUDE)
|
|
etm4_set_mode_exclude(drvdata, true);
|
|
else
|
|
etm4_set_mode_exclude(drvdata, false);
|
|
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(addr_range);
|
|
|
|
static ssize_t addr_start_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
|
|
if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
|
|
config->addr_type[idx] == ETM_ADDR_TYPE_START)) {
|
|
spin_unlock(&drvdata->spinlock);
|
|
return -EPERM;
|
|
}
|
|
|
|
val = (unsigned long)config->addr_val[idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t addr_start_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
if (!drvdata->nr_addr_cmp) {
|
|
spin_unlock(&drvdata->spinlock);
|
|
return -EINVAL;
|
|
}
|
|
if (!(config->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
|
|
config->addr_type[idx] == ETM_ADDR_TYPE_START)) {
|
|
spin_unlock(&drvdata->spinlock);
|
|
return -EPERM;
|
|
}
|
|
|
|
config->addr_val[idx] = (u64)val;
|
|
config->addr_type[idx] = ETM_ADDR_TYPE_START;
|
|
config->vissctlr |= BIT(idx);
|
|
/* SSSTATUS, bit[9] - turn on start/stop logic */
|
|
config->vinst_ctrl |= BIT(9);
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(addr_start);
|
|
|
|
static ssize_t addr_stop_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
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;
|
|
}
|
|
|
|
val = (unsigned long)config->addr_val[idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t addr_stop_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
if (!drvdata->nr_addr_cmp) {
|
|
spin_unlock(&drvdata->spinlock);
|
|
return -EINVAL;
|
|
}
|
|
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] = (u64)val;
|
|
config->addr_type[idx] = ETM_ADDR_TYPE_STOP;
|
|
config->vissctlr |= BIT(idx + 16);
|
|
/* SSSTATUS, bit[9] - turn on start/stop logic */
|
|
config->vinst_ctrl |= BIT(9);
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(addr_stop);
|
|
|
|
static ssize_t addr_ctxtype_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
ssize_t len;
|
|
u8 idx, val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
/* CONTEXTTYPE, bits[3:2] */
|
|
val = BMVAL(config->addr_acc[idx], 2, 3);
|
|
len = scnprintf(buf, PAGE_SIZE, "%s\n", val == ETM_CTX_NONE ? "none" :
|
|
(val == ETM_CTX_CTXID ? "ctxid" :
|
|
(val == ETM_CTX_VMID ? "vmid" : "all")));
|
|
spin_unlock(&drvdata->spinlock);
|
|
return len;
|
|
}
|
|
|
|
static ssize_t addr_ctxtype_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
char str[10] = "";
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (strlen(buf) >= 10)
|
|
return -EINVAL;
|
|
if (sscanf(buf, "%s", str) != 1)
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
if (!strcmp(str, "none"))
|
|
/* start by clearing context type bits */
|
|
config->addr_acc[idx] &= ~(BIT(2) | BIT(3));
|
|
else if (!strcmp(str, "ctxid")) {
|
|
/* 0b01 The trace unit performs a Context ID */
|
|
if (drvdata->numcidc) {
|
|
config->addr_acc[idx] |= BIT(2);
|
|
config->addr_acc[idx] &= ~BIT(3);
|
|
}
|
|
} else if (!strcmp(str, "vmid")) {
|
|
/* 0b10 The trace unit performs a VMID */
|
|
if (drvdata->numvmidc) {
|
|
config->addr_acc[idx] &= ~BIT(2);
|
|
config->addr_acc[idx] |= BIT(3);
|
|
}
|
|
} else if (!strcmp(str, "all")) {
|
|
/*
|
|
* 0b11 The trace unit performs a Context ID
|
|
* comparison and a VMID
|
|
*/
|
|
if (drvdata->numcidc)
|
|
config->addr_acc[idx] |= BIT(2);
|
|
if (drvdata->numvmidc)
|
|
config->addr_acc[idx] |= BIT(3);
|
|
}
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(addr_ctxtype);
|
|
|
|
static ssize_t addr_context_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
/* context ID comparator bits[6:4] */
|
|
val = BMVAL(config->addr_acc[idx], 4, 6);
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t addr_context_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if ((drvdata->numcidc <= 1) && (drvdata->numvmidc <= 1))
|
|
return -EINVAL;
|
|
if (val >= (drvdata->numcidc >= drvdata->numvmidc ?
|
|
drvdata->numcidc : drvdata->numvmidc))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->addr_idx;
|
|
/* clear context ID comparator bits[6:4] */
|
|
config->addr_acc[idx] &= ~(BIT(4) | BIT(5) | BIT(6));
|
|
config->addr_acc[idx] |= (val << 4);
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(addr_context);
|
|
|
|
static ssize_t seq_idx_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->seq_idx;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t seq_idx_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if (val >= drvdata->nrseqstate - 1)
|
|
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->seq_idx = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(seq_idx);
|
|
|
|
static ssize_t seq_state_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->seq_state;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t seq_state_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if (val >= drvdata->nrseqstate)
|
|
return -EINVAL;
|
|
|
|
config->seq_state = val;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(seq_state);
|
|
|
|
static ssize_t seq_event_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->seq_idx;
|
|
val = config->seq_ctrl[idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t seq_event_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->seq_idx;
|
|
/* RST, bits[7:0] */
|
|
config->seq_ctrl[idx] = val & 0xFF;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(seq_event);
|
|
|
|
static ssize_t seq_reset_event_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->seq_rst;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t seq_reset_event_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if (!(drvdata->nrseqstate))
|
|
return -EINVAL;
|
|
|
|
config->seq_rst = val & ETMv4_EVENT_MASK;
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(seq_reset_event);
|
|
|
|
static ssize_t cntr_idx_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->cntr_idx;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t cntr_idx_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
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 cntrldvr_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->cntr_idx;
|
|
val = config->cntrldvr[idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t cntrldvr_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if (val > ETM_CNTR_MAX_VAL)
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->cntr_idx;
|
|
config->cntrldvr[idx] = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(cntrldvr);
|
|
|
|
static ssize_t cntr_val_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->cntr_idx;
|
|
val = config->cntr_val[idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t cntr_val_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if (val > ETM_CNTR_MAX_VAL)
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->cntr_idx;
|
|
config->cntr_val[idx] = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(cntr_val);
|
|
|
|
static ssize_t cntr_ctrl_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->cntr_idx;
|
|
val = config->cntr_ctrl[idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t cntr_ctrl_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->cntr_idx;
|
|
config->cntr_ctrl[idx] = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(cntr_ctrl);
|
|
|
|
static ssize_t res_idx_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->res_idx;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t res_idx_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
/* Resource selector pair 0 is always implemented and reserved */
|
|
if ((val == 0) || (val >= drvdata->nr_resource))
|
|
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->res_idx = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(res_idx);
|
|
|
|
static ssize_t res_ctrl_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->res_idx;
|
|
val = config->res_ctrl[idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t res_ctrl_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->res_idx;
|
|
/* For odd idx pair inversal bit is RES0 */
|
|
if (idx % 2 != 0)
|
|
/* PAIRINV, bit[21] */
|
|
val &= ~BIT(21);
|
|
config->res_ctrl[idx] = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(res_ctrl);
|
|
|
|
static ssize_t ctxid_idx_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->ctxid_idx;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t ctxid_idx_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if (val >= drvdata->numcidc)
|
|
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)
|
|
{
|
|
u8 idx;
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_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);
|
|
idx = config->ctxid_idx;
|
|
val = (unsigned long)config->ctxid_pid[idx];
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t ctxid_pid_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 idx;
|
|
unsigned long pid;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_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;
|
|
|
|
/*
|
|
* only implemented when ctxid tracing is enabled, i.e. at least one
|
|
* ctxid comparator is implemented and ctxid is greater than 0 bits
|
|
* in length
|
|
*/
|
|
if (!drvdata->ctxid_size || !drvdata->numcidc)
|
|
return -EINVAL;
|
|
if (kstrtoul(buf, 16, &pid))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
idx = config->ctxid_idx;
|
|
config->ctxid_pid[idx] = (u64)pid;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(ctxid_pid);
|
|
|
|
static ssize_t ctxid_masks_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val1, val2;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_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);
|
|
val1 = config->ctxid_mask0;
|
|
val2 = config->ctxid_mask1;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx %#lx\n", val1, val2);
|
|
}
|
|
|
|
static ssize_t ctxid_masks_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 i, j, maskbyte;
|
|
unsigned long val1, val2, mask;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_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;
|
|
|
|
/*
|
|
* only implemented when ctxid tracing is enabled, i.e. at least one
|
|
* ctxid comparator is implemented and ctxid is greater than 0 bits
|
|
* in length
|
|
*/
|
|
if (!drvdata->ctxid_size || !drvdata->numcidc)
|
|
return -EINVAL;
|
|
if (sscanf(buf, "%lx %lx", &val1, &val2) != 2)
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
/*
|
|
* each byte[0..3] controls mask value applied to ctxid
|
|
* comparator[0..3]
|
|
*/
|
|
switch (drvdata->numcidc) {
|
|
case 0x1:
|
|
/* COMP0, bits[7:0] */
|
|
config->ctxid_mask0 = val1 & 0xFF;
|
|
break;
|
|
case 0x2:
|
|
/* COMP1, bits[15:8] */
|
|
config->ctxid_mask0 = val1 & 0xFFFF;
|
|
break;
|
|
case 0x3:
|
|
/* COMP2, bits[23:16] */
|
|
config->ctxid_mask0 = val1 & 0xFFFFFF;
|
|
break;
|
|
case 0x4:
|
|
/* COMP3, bits[31:24] */
|
|
config->ctxid_mask0 = val1;
|
|
break;
|
|
case 0x5:
|
|
/* COMP4, bits[7:0] */
|
|
config->ctxid_mask0 = val1;
|
|
config->ctxid_mask1 = val2 & 0xFF;
|
|
break;
|
|
case 0x6:
|
|
/* COMP5, bits[15:8] */
|
|
config->ctxid_mask0 = val1;
|
|
config->ctxid_mask1 = val2 & 0xFFFF;
|
|
break;
|
|
case 0x7:
|
|
/* COMP6, bits[23:16] */
|
|
config->ctxid_mask0 = val1;
|
|
config->ctxid_mask1 = val2 & 0xFFFFFF;
|
|
break;
|
|
case 0x8:
|
|
/* COMP7, bits[31:24] */
|
|
config->ctxid_mask0 = val1;
|
|
config->ctxid_mask1 = val2;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
/*
|
|
* If software sets a mask bit to 1, it must program relevant byte
|
|
* of ctxid comparator value 0x0, otherwise behavior is unpredictable.
|
|
* For example, if bit[3] of ctxid_mask0 is 1, we must clear bits[31:24]
|
|
* of ctxid comparator0 value (corresponding to byte 0) register.
|
|
*/
|
|
mask = config->ctxid_mask0;
|
|
for (i = 0; i < drvdata->numcidc; i++) {
|
|
/* mask value of corresponding ctxid comparator */
|
|
maskbyte = mask & ETMv4_EVENT_MASK;
|
|
/*
|
|
* each bit corresponds to a byte of respective ctxid comparator
|
|
* value register
|
|
*/
|
|
for (j = 0; j < 8; j++) {
|
|
if (maskbyte & 1)
|
|
config->ctxid_pid[i] &= ~(0xFFUL << (j * 8));
|
|
maskbyte >>= 1;
|
|
}
|
|
/* Select the next ctxid comparator mask value */
|
|
if (i == 3)
|
|
/* ctxid comparators[4-7] */
|
|
mask = config->ctxid_mask1;
|
|
else
|
|
mask >>= 0x8;
|
|
}
|
|
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(ctxid_masks);
|
|
|
|
static ssize_t vmid_idx_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = config->vmid_idx;
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t vmid_idx_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
if (val >= drvdata->numvmidc)
|
|
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->vmid_idx = val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(vmid_idx);
|
|
|
|
static ssize_t vmid_val_show(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
val = (unsigned long)config->vmid_val[config->vmid_idx];
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
|
|
}
|
|
|
|
static ssize_t vmid_val_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
unsigned long val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
/*
|
|
* only implemented when vmid tracing is enabled, i.e. at least one
|
|
* vmid comparator is implemented and at least 8 bit vmid size
|
|
*/
|
|
if (!drvdata->vmid_size || !drvdata->numvmidc)
|
|
return -EINVAL;
|
|
if (kstrtoul(buf, 16, &val))
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
config->vmid_val[config->vmid_idx] = (u64)val;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(vmid_val);
|
|
|
|
static ssize_t vmid_masks_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val1, val2;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
val1 = config->vmid_mask0;
|
|
val2 = config->vmid_mask1;
|
|
spin_unlock(&drvdata->spinlock);
|
|
return scnprintf(buf, PAGE_SIZE, "%#lx %#lx\n", val1, val2);
|
|
}
|
|
|
|
static ssize_t vmid_masks_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
u8 i, j, maskbyte;
|
|
unsigned long val1, val2, mask;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
struct etmv4_config *config = &drvdata->config;
|
|
|
|
/*
|
|
* only implemented when vmid tracing is enabled, i.e. at least one
|
|
* vmid comparator is implemented and at least 8 bit vmid size
|
|
*/
|
|
if (!drvdata->vmid_size || !drvdata->numvmidc)
|
|
return -EINVAL;
|
|
if (sscanf(buf, "%lx %lx", &val1, &val2) != 2)
|
|
return -EINVAL;
|
|
|
|
spin_lock(&drvdata->spinlock);
|
|
|
|
/*
|
|
* each byte[0..3] controls mask value applied to vmid
|
|
* comparator[0..3]
|
|
*/
|
|
switch (drvdata->numvmidc) {
|
|
case 0x1:
|
|
/* COMP0, bits[7:0] */
|
|
config->vmid_mask0 = val1 & 0xFF;
|
|
break;
|
|
case 0x2:
|
|
/* COMP1, bits[15:8] */
|
|
config->vmid_mask0 = val1 & 0xFFFF;
|
|
break;
|
|
case 0x3:
|
|
/* COMP2, bits[23:16] */
|
|
config->vmid_mask0 = val1 & 0xFFFFFF;
|
|
break;
|
|
case 0x4:
|
|
/* COMP3, bits[31:24] */
|
|
config->vmid_mask0 = val1;
|
|
break;
|
|
case 0x5:
|
|
/* COMP4, bits[7:0] */
|
|
config->vmid_mask0 = val1;
|
|
config->vmid_mask1 = val2 & 0xFF;
|
|
break;
|
|
case 0x6:
|
|
/* COMP5, bits[15:8] */
|
|
config->vmid_mask0 = val1;
|
|
config->vmid_mask1 = val2 & 0xFFFF;
|
|
break;
|
|
case 0x7:
|
|
/* COMP6, bits[23:16] */
|
|
config->vmid_mask0 = val1;
|
|
config->vmid_mask1 = val2 & 0xFFFFFF;
|
|
break;
|
|
case 0x8:
|
|
/* COMP7, bits[31:24] */
|
|
config->vmid_mask0 = val1;
|
|
config->vmid_mask1 = val2;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* If software sets a mask bit to 1, it must program relevant byte
|
|
* of vmid comparator value 0x0, otherwise behavior is unpredictable.
|
|
* For example, if bit[3] of vmid_mask0 is 1, we must clear bits[31:24]
|
|
* of vmid comparator0 value (corresponding to byte 0) register.
|
|
*/
|
|
mask = config->vmid_mask0;
|
|
for (i = 0; i < drvdata->numvmidc; i++) {
|
|
/* mask value of corresponding vmid comparator */
|
|
maskbyte = mask & ETMv4_EVENT_MASK;
|
|
/*
|
|
* each bit corresponds to a byte of respective vmid comparator
|
|
* value register
|
|
*/
|
|
for (j = 0; j < 8; j++) {
|
|
if (maskbyte & 1)
|
|
config->vmid_val[i] &= ~(0xFFUL << (j * 8));
|
|
maskbyte >>= 1;
|
|
}
|
|
/* Select the next vmid comparator mask value */
|
|
if (i == 3)
|
|
/* vmid comparators[4-7] */
|
|
mask = config->vmid_mask1;
|
|
else
|
|
mask >>= 0x8;
|
|
}
|
|
spin_unlock(&drvdata->spinlock);
|
|
return size;
|
|
}
|
|
static DEVICE_ATTR_RW(vmid_masks);
|
|
|
|
static ssize_t cpu_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
int val;
|
|
struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
|
|
|
|
val = drvdata->cpu;
|
|
return scnprintf(buf, PAGE_SIZE, "%d\n", val);
|
|
|
|
}
|
|
static DEVICE_ATTR_RO(cpu);
|
|
|
|
static struct attribute *coresight_etmv4_attrs[] = {
|
|
&dev_attr_nr_pe_cmp.attr,
|
|
&dev_attr_nr_addr_cmp.attr,
|
|
&dev_attr_nr_cntr.attr,
|
|
&dev_attr_nr_ext_inp.attr,
|
|
&dev_attr_numcidc.attr,
|
|
&dev_attr_numvmidc.attr,
|
|
&dev_attr_nrseqstate.attr,
|
|
&dev_attr_nr_resource.attr,
|
|
&dev_attr_nr_ss_cmp.attr,
|
|
&dev_attr_reset.attr,
|
|
&dev_attr_mode.attr,
|
|
&dev_attr_pe.attr,
|
|
&dev_attr_event.attr,
|
|
&dev_attr_event_instren.attr,
|
|
&dev_attr_event_ts.attr,
|
|
&dev_attr_syncfreq.attr,
|
|
&dev_attr_cyc_threshold.attr,
|
|
&dev_attr_bb_ctrl.attr,
|
|
&dev_attr_event_vinst.attr,
|
|
&dev_attr_s_exlevel_vinst.attr,
|
|
&dev_attr_ns_exlevel_vinst.attr,
|
|
&dev_attr_addr_idx.attr,
|
|
&dev_attr_addr_instdatatype.attr,
|
|
&dev_attr_addr_single.attr,
|
|
&dev_attr_addr_range.attr,
|
|
&dev_attr_addr_start.attr,
|
|
&dev_attr_addr_stop.attr,
|
|
&dev_attr_addr_ctxtype.attr,
|
|
&dev_attr_addr_context.attr,
|
|
&dev_attr_seq_idx.attr,
|
|
&dev_attr_seq_state.attr,
|
|
&dev_attr_seq_event.attr,
|
|
&dev_attr_seq_reset_event.attr,
|
|
&dev_attr_cntr_idx.attr,
|
|
&dev_attr_cntrldvr.attr,
|
|
&dev_attr_cntr_val.attr,
|
|
&dev_attr_cntr_ctrl.attr,
|
|
&dev_attr_res_idx.attr,
|
|
&dev_attr_res_ctrl.attr,
|
|
&dev_attr_ctxid_idx.attr,
|
|
&dev_attr_ctxid_pid.attr,
|
|
&dev_attr_ctxid_masks.attr,
|
|
&dev_attr_vmid_idx.attr,
|
|
&dev_attr_vmid_val.attr,
|
|
&dev_attr_vmid_masks.attr,
|
|
&dev_attr_cpu.attr,
|
|
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 cross call ensures the CPU will be powered up before
|
|
* accessing the ETMv4 trace core registers
|
|
*/
|
|
smp_call_function_single(drvdata->cpu, do_smp_cross_read, ®, 1);
|
|
return reg.data;
|
|
}
|
|
|
|
#define coresight_etm4x_reg(name, offset) \
|
|
coresight_simple_reg32(struct etmv4_drvdata, name, offset)
|
|
|
|
#define coresight_etm4x_cross_read(name, offset) \
|
|
coresight_simple_func(struct etmv4_drvdata, etmv4_cross_read, \
|
|
name, offset)
|
|
|
|
coresight_etm4x_reg(trcpdcr, TRCPDCR);
|
|
coresight_etm4x_reg(trcpdsr, TRCPDSR);
|
|
coresight_etm4x_reg(trclsr, TRCLSR);
|
|
coresight_etm4x_reg(trcauthstatus, TRCAUTHSTATUS);
|
|
coresight_etm4x_reg(trcdevid, TRCDEVID);
|
|
coresight_etm4x_reg(trcdevtype, TRCDEVTYPE);
|
|
coresight_etm4x_reg(trcpidr0, TRCPIDR0);
|
|
coresight_etm4x_reg(trcpidr1, TRCPIDR1);
|
|
coresight_etm4x_reg(trcpidr2, TRCPIDR2);
|
|
coresight_etm4x_reg(trcpidr3, TRCPIDR3);
|
|
coresight_etm4x_cross_read(trcoslsr, TRCOSLSR);
|
|
coresight_etm4x_cross_read(trcconfig, TRCCONFIGR);
|
|
coresight_etm4x_cross_read(trctraceid, TRCTRACEIDR);
|
|
|
|
static struct attribute *coresight_etmv4_mgmt_attrs[] = {
|
|
&dev_attr_trcoslsr.attr,
|
|
&dev_attr_trcpdcr.attr,
|
|
&dev_attr_trcpdsr.attr,
|
|
&dev_attr_trclsr.attr,
|
|
&dev_attr_trcconfig.attr,
|
|
&dev_attr_trctraceid.attr,
|
|
&dev_attr_trcauthstatus.attr,
|
|
&dev_attr_trcdevid.attr,
|
|
&dev_attr_trcdevtype.attr,
|
|
&dev_attr_trcpidr0.attr,
|
|
&dev_attr_trcpidr1.attr,
|
|
&dev_attr_trcpidr2.attr,
|
|
&dev_attr_trcpidr3.attr,
|
|
NULL,
|
|
};
|
|
|
|
coresight_etm4x_cross_read(trcidr0, TRCIDR0);
|
|
coresight_etm4x_cross_read(trcidr1, TRCIDR1);
|
|
coresight_etm4x_cross_read(trcidr2, TRCIDR2);
|
|
coresight_etm4x_cross_read(trcidr3, TRCIDR3);
|
|
coresight_etm4x_cross_read(trcidr4, TRCIDR4);
|
|
coresight_etm4x_cross_read(trcidr5, TRCIDR5);
|
|
/* trcidr[6,7] are reserved */
|
|
coresight_etm4x_cross_read(trcidr8, TRCIDR8);
|
|
coresight_etm4x_cross_read(trcidr9, TRCIDR9);
|
|
coresight_etm4x_cross_read(trcidr10, TRCIDR10);
|
|
coresight_etm4x_cross_read(trcidr11, TRCIDR11);
|
|
coresight_etm4x_cross_read(trcidr12, TRCIDR12);
|
|
coresight_etm4x_cross_read(trcidr13, TRCIDR13);
|
|
|
|
static struct attribute *coresight_etmv4_trcidr_attrs[] = {
|
|
&dev_attr_trcidr0.attr,
|
|
&dev_attr_trcidr1.attr,
|
|
&dev_attr_trcidr2.attr,
|
|
&dev_attr_trcidr3.attr,
|
|
&dev_attr_trcidr4.attr,
|
|
&dev_attr_trcidr5.attr,
|
|
/* trcidr[6,7] are reserved */
|
|
&dev_attr_trcidr8.attr,
|
|
&dev_attr_trcidr9.attr,
|
|
&dev_attr_trcidr10.attr,
|
|
&dev_attr_trcidr11.attr,
|
|
&dev_attr_trcidr12.attr,
|
|
&dev_attr_trcidr13.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group coresight_etmv4_group = {
|
|
.attrs = coresight_etmv4_attrs,
|
|
};
|
|
|
|
static const struct attribute_group coresight_etmv4_mgmt_group = {
|
|
.attrs = coresight_etmv4_mgmt_attrs,
|
|
.name = "mgmt",
|
|
};
|
|
|
|
static const struct attribute_group coresight_etmv4_trcidr_group = {
|
|
.attrs = coresight_etmv4_trcidr_attrs,
|
|
.name = "trcidr",
|
|
};
|
|
|
|
const struct attribute_group *coresight_etmv4_groups[] = {
|
|
&coresight_etmv4_group,
|
|
&coresight_etmv4_mgmt_group,
|
|
&coresight_etmv4_trcidr_group,
|
|
NULL,
|
|
};
|