coresight-etm4x: Controls pertaining to the address comparator functions
Adding sysfs entries to control the various mode the address comparator registers can enact, i.e, start/top, single, and range. Also supplementing with address comparator types configuration registers access, mandatory to complete the configuration of the comparator functions. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pratik Patel
Greg Kroah-Hartman
Родитель
43ba6a7b00
Коммит
35c9b29bc8
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@ -154,3 +154,28 @@ KernelVersion: 4.01
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Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
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Description: (RW) In non-secure state, each bit controls whether instruction
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tracing is enabled for the corresponding exception level.
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What: /sys/bus/coresight/devices/<memory_map>.etm/addr_idx
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Date: April 2015
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KernelVersion: 4.01
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Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
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Description: (RW) Select which address comparator or pair (of comparators) to
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work with.
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What: /sys/bus/coresight/devices/<memory_map>.etm/addr_instdatatype
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Date: April 2015
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KernelVersion: 4.01
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Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
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Description: (RW) Controls what type of comparison the trace unit performs.
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What: /sys/bus/coresight/devices/<memory_map>.etm/addr_single
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Date: April 2015
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KernelVersion: 4.01
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Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
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Description: (RW) Used to setup single address comparator values.
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What: /sys/bus/coresight/devices/<memory_map>.etm/addr_range
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Date: April 2015
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KernelVersion: 4.01
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Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
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Description: (RW) Used to setup address range comparator values.
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@ -1027,6 +1027,421 @@ static ssize_t ns_exlevel_vinst_store(struct device *dev,
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}
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static DEVICE_ATTR_RW(ns_exlevel_vinst);
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static ssize_t addr_idx_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->addr_idx;
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return scnprintf(buf, PAGE_SIZE, "%#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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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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if (kstrtoul(buf, 16, &val))
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return -EINVAL;
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if (val >= drvdata->nr_addr_cmp * 2)
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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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drvdata->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_instdatatype_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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ssize_t len;
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u8 val, idx;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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spin_lock(&drvdata->spinlock);
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idx = drvdata->addr_idx;
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val = BMVAL(drvdata->addr_acc[idx], 0, 1);
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len = scnprintf(buf, PAGE_SIZE, "%s\n",
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val == ETM_INSTR_ADDR ? "instr" :
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(val == ETM_DATA_LOAD_ADDR ? "data_load" :
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(val == ETM_DATA_STORE_ADDR ? "data_store" :
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"data_load_store")));
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spin_unlock(&drvdata->spinlock);
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return len;
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}
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static ssize_t addr_instdatatype_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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char str[20] = "";
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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if (strlen(buf) >= 20)
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return -EINVAL;
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if (sscanf(buf, "%s", str) != 1)
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return -EINVAL;
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spin_lock(&drvdata->spinlock);
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idx = drvdata->addr_idx;
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if (!strcmp(str, "instr"))
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/* TYPE, bits[1:0] */
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drvdata->addr_acc[idx] &= ~(BIT(0) | BIT(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_RW(addr_instdatatype);
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static ssize_t addr_single_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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u8 idx;
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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idx = drvdata->addr_idx;
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spin_lock(&drvdata->spinlock);
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if (!(drvdata->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
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drvdata->addr_type[idx] == ETM_ADDR_TYPE_SINGLE)) {
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spin_unlock(&drvdata->spinlock);
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return -EPERM;
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}
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val = (unsigned long)drvdata->addr_val[idx];
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spin_unlock(&drvdata->spinlock);
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return scnprintf(buf, PAGE_SIZE, "%#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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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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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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idx = drvdata->addr_idx;
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if (!(drvdata->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
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drvdata->addr_type[idx] == ETM_ADDR_TYPE_SINGLE)) {
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spin_unlock(&drvdata->spinlock);
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return -EPERM;
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}
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drvdata->addr_val[idx] = (u64)val;
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drvdata->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,
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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 etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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spin_lock(&drvdata->spinlock);
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idx = drvdata->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 (!((drvdata->addr_type[idx] == ETM_ADDR_TYPE_NONE &&
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drvdata->addr_type[idx + 1] == ETM_ADDR_TYPE_NONE) ||
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(drvdata->addr_type[idx] == ETM_ADDR_TYPE_RANGE &&
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drvdata->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 = (unsigned long)drvdata->addr_val[idx];
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val2 = (unsigned long)drvdata->addr_val[idx + 1];
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spin_unlock(&drvdata->spinlock);
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return scnprintf(buf, PAGE_SIZE, "%#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 etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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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 = drvdata->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 (!((drvdata->addr_type[idx] == ETM_ADDR_TYPE_NONE &&
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drvdata->addr_type[idx + 1] == ETM_ADDR_TYPE_NONE) ||
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(drvdata->addr_type[idx] == ETM_ADDR_TYPE_RANGE &&
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drvdata->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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drvdata->addr_val[idx] = (u64)val1;
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drvdata->addr_type[idx] = ETM_ADDR_TYPE_RANGE;
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drvdata->addr_val[idx + 1] = (u64)val2;
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drvdata->addr_type[idx + 1] = ETM_ADDR_TYPE_RANGE;
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/*
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* Program include or exclude control bits for vinst or vdata
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* whenever we change addr comparators to ETM_ADDR_TYPE_RANGE
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*/
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if (drvdata->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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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,
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char *buf)
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{
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u8 idx;
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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spin_lock(&drvdata->spinlock);
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idx = drvdata->addr_idx;
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if (!(drvdata->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
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drvdata->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 = (unsigned long)drvdata->addr_val[idx];
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spin_unlock(&drvdata->spinlock);
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return scnprintf(buf, PAGE_SIZE, "%#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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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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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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idx = drvdata->addr_idx;
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if (!drvdata->nr_addr_cmp) {
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spin_unlock(&drvdata->spinlock);
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return -EINVAL;
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}
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if (!(drvdata->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
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drvdata->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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drvdata->addr_val[idx] = (u64)val;
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drvdata->addr_type[idx] = ETM_ADDR_TYPE_START;
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drvdata->vissctlr |= BIT(idx);
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/* SSSTATUS, bit[9] - turn on start/stop logic */
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drvdata->vinst_ctrl |= BIT(9);
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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,
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char *buf)
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{
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u8 idx;
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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spin_lock(&drvdata->spinlock);
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idx = drvdata->addr_idx;
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if (!(drvdata->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
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drvdata->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 = (unsigned long)drvdata->addr_val[idx];
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spin_unlock(&drvdata->spinlock);
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return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
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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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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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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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idx = drvdata->addr_idx;
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if (!drvdata->nr_addr_cmp) {
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spin_unlock(&drvdata->spinlock);
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return -EINVAL;
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}
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if (!(drvdata->addr_type[idx] == ETM_ADDR_TYPE_NONE ||
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drvdata->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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drvdata->addr_val[idx] = (u64)val;
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drvdata->addr_type[idx] = ETM_ADDR_TYPE_STOP;
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drvdata->vissctlr |= BIT(idx + 16);
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/* SSSTATUS, bit[9] - turn on start/stop logic */
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drvdata->vinst_ctrl |= BIT(9);
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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_stop);
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static ssize_t addr_ctxtype_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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ssize_t len;
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u8 idx, val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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spin_lock(&drvdata->spinlock);
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idx = drvdata->addr_idx;
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/* CONTEXTTYPE, bits[3:2] */
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val = BMVAL(drvdata->addr_acc[idx], 2, 3);
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len = scnprintf(buf, PAGE_SIZE, "%s\n", val == ETM_CTX_NONE ? "none" :
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(val == ETM_CTX_CTXID ? "ctxid" :
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(val == ETM_CTX_VMID ? "vmid" : "all")));
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spin_unlock(&drvdata->spinlock);
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return len;
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}
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static ssize_t addr_ctxtype_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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char str[10] = "";
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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if (strlen(buf) >= 10)
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return -EINVAL;
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if (sscanf(buf, "%s", str) != 1)
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return -EINVAL;
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spin_lock(&drvdata->spinlock);
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idx = drvdata->addr_idx;
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if (!strcmp(str, "none"))
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/* start by clearing context type bits */
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drvdata->addr_acc[idx] &= ~(BIT(2) | BIT(3));
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else if (!strcmp(str, "ctxid")) {
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/* 0b01 The trace unit performs a Context ID */
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if (drvdata->numcidc) {
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drvdata->addr_acc[idx] |= BIT(2);
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drvdata->addr_acc[idx] &= ~BIT(3);
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}
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} else if (!strcmp(str, "vmid")) {
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/* 0b10 The trace unit performs a VMID */
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if (drvdata->numvmidc) {
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drvdata->addr_acc[idx] &= ~BIT(2);
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drvdata->addr_acc[idx] |= BIT(3);
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}
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} else if (!strcmp(str, "all")) {
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/*
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* 0b11 The trace unit performs a Context ID
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* comparison and a VMID
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*/
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if (drvdata->numcidc)
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drvdata->addr_acc[idx] |= BIT(2);
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if (drvdata->numvmidc)
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drvdata->addr_acc[idx] |= BIT(3);
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}
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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_ctxtype);
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static ssize_t addr_context_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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u8 idx;
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unsigned long val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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spin_lock(&drvdata->spinlock);
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idx = drvdata->addr_idx;
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/* context ID comparator bits[6:4] */
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val = BMVAL(drvdata->addr_acc[idx], 4, 6);
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spin_unlock(&drvdata->spinlock);
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return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
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}
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static ssize_t addr_context_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 val;
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struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent);
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if (kstrtoul(buf, 16, &val))
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return -EINVAL;
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if ((drvdata->numcidc <= 1) && (drvdata->numvmidc <= 1))
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return -EINVAL;
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if (val >= (drvdata->numcidc >= drvdata->numvmidc ?
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drvdata->numcidc : drvdata->numvmidc))
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return -EINVAL;
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spin_lock(&drvdata->spinlock);
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idx = drvdata->addr_idx;
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/* clear context ID comparator bits[6:4] */
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drvdata->addr_acc[idx] &= ~(BIT(4) | BIT(5) | BIT(6));
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drvdata->addr_acc[idx] |= (val << 4);
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spin_unlock(&drvdata->spinlock);
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return size;
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}
|
||||
static DEVICE_ATTR_RW(addr_context);
|
||||
|
||||
static ssize_t cpu_show(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
|
|
@ -1061,6 +1476,14 @@ static struct attribute *coresight_etmv4_attrs[] = {
|
|||
&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_cpu.attr,
|
||||
NULL,
|
||||
};
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче