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linux-stable/drivers/hwtracing/coresight/coresight-tpdm.c

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#include <linux/amba/bus.h>
#include <linux/bitfield.h>
#include <linux/bitmap.h>
#include <linux/coresight.h>
#include <linux/coresight-pmu.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/fs.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include "coresight-priv.h"
#include "coresight-tpdm.h"
DEFINE_CORESIGHT_DEVLIST(tpdm_devs, "tpdm");
/* Read dataset array member with the index number */
static ssize_t tpdm_simple_dataset_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
struct tpdm_dataset_attribute *tpdm_attr =
container_of(attr, struct tpdm_dataset_attribute, attr);
switch (tpdm_attr->mem) {
case DSB_EDGE_CTRL:
if (tpdm_attr->idx >= TPDM_DSB_MAX_EDCR)
return -EINVAL;
return sysfs_emit(buf, "0x%x\n",
drvdata->dsb->edge_ctrl[tpdm_attr->idx]);
case DSB_EDGE_CTRL_MASK:
if (tpdm_attr->idx >= TPDM_DSB_MAX_EDCMR)
return -EINVAL;
return sysfs_emit(buf, "0x%x\n",
drvdata->dsb->edge_ctrl_mask[tpdm_attr->idx]);
case DSB_TRIG_PATT:
if (tpdm_attr->idx >= TPDM_DSB_MAX_PATT)
return -EINVAL;
return sysfs_emit(buf, "0x%x\n",
drvdata->dsb->trig_patt[tpdm_attr->idx]);
case DSB_TRIG_PATT_MASK:
if (tpdm_attr->idx >= TPDM_DSB_MAX_PATT)
return -EINVAL;
return sysfs_emit(buf, "0x%x\n",
drvdata->dsb->trig_patt_mask[tpdm_attr->idx]);
case DSB_PATT:
if (tpdm_attr->idx >= TPDM_DSB_MAX_PATT)
return -EINVAL;
return sysfs_emit(buf, "0x%x\n",
drvdata->dsb->patt_val[tpdm_attr->idx]);
case DSB_PATT_MASK:
if (tpdm_attr->idx >= TPDM_DSB_MAX_PATT)
return -EINVAL;
return sysfs_emit(buf, "0x%x\n",
drvdata->dsb->patt_mask[tpdm_attr->idx]);
case DSB_MSR:
if (tpdm_attr->idx >= drvdata->dsb_msr_num)
return -EINVAL;
return sysfs_emit(buf, "0x%x\n",
drvdata->dsb->msr[tpdm_attr->idx]);
}
return -EINVAL;
}
/* Write dataset array member with the index number */
static ssize_t tpdm_simple_dataset_store(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t size)
{
unsigned long val;
ssize_t ret = size;
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
struct tpdm_dataset_attribute *tpdm_attr =
container_of(attr, struct tpdm_dataset_attribute, attr);
if (kstrtoul(buf, 0, &val))
return -EINVAL;
spin_lock(&drvdata->spinlock);
switch (tpdm_attr->mem) {
case DSB_TRIG_PATT:
if (tpdm_attr->idx < TPDM_DSB_MAX_PATT)
drvdata->dsb->trig_patt[tpdm_attr->idx] = val;
else
ret = -EINVAL;
break;
case DSB_TRIG_PATT_MASK:
if (tpdm_attr->idx < TPDM_DSB_MAX_PATT)
drvdata->dsb->trig_patt_mask[tpdm_attr->idx] = val;
else
ret = -EINVAL;
break;
case DSB_PATT:
if (tpdm_attr->idx < TPDM_DSB_MAX_PATT)
drvdata->dsb->patt_val[tpdm_attr->idx] = val;
else
ret = -EINVAL;
break;
case DSB_PATT_MASK:
if (tpdm_attr->idx < TPDM_DSB_MAX_PATT)
drvdata->dsb->patt_mask[tpdm_attr->idx] = val;
else
ret = -EINVAL;
break;
case DSB_MSR:
if (tpdm_attr->idx < drvdata->dsb_msr_num)
drvdata->dsb->msr[tpdm_attr->idx] = val;
else
ret = -EINVAL;
break;
default:
ret = -EINVAL;
}
spin_unlock(&drvdata->spinlock);
return ret;
}
static bool tpdm_has_dsb_dataset(struct tpdm_drvdata *drvdata)
{
return (drvdata->datasets & TPDM_PIDR0_DS_DSB);
}
static umode_t tpdm_dsb_is_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
struct device *dev = kobj_to_dev(kobj);
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
if (drvdata && tpdm_has_dsb_dataset(drvdata))
return attr->mode;
return 0;
}
static umode_t tpdm_dsb_msr_is_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
struct device *dev = kobj_to_dev(kobj);
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
struct device_attribute *dev_attr =
container_of(attr, struct device_attribute, attr);
struct tpdm_dataset_attribute *tpdm_attr =
container_of(dev_attr, struct tpdm_dataset_attribute, attr);
if (tpdm_attr->idx < drvdata->dsb_msr_num)
return attr->mode;
return 0;
}
static void tpdm_reset_datasets(struct tpdm_drvdata *drvdata)
{
if (tpdm_has_dsb_dataset(drvdata)) {
memset(drvdata->dsb, 0, sizeof(struct dsb_dataset));
drvdata->dsb->trig_ts = true;
drvdata->dsb->trig_type = false;
}
}
static void set_dsb_mode(struct tpdm_drvdata *drvdata, u32 *val)
{
u32 mode;
/* Set the test accurate mode */
mode = TPDM_DSB_MODE_TEST(drvdata->dsb->mode);
*val &= ~TPDM_DSB_CR_TEST_MODE;
*val |= FIELD_PREP(TPDM_DSB_CR_TEST_MODE, mode);
/* Set the byte lane for high-performance mode */
mode = TPDM_DSB_MODE_HPBYTESEL(drvdata->dsb->mode);
*val &= ~TPDM_DSB_CR_HPSEL;
*val |= FIELD_PREP(TPDM_DSB_CR_HPSEL, mode);
/* Set the performance mode */
if (drvdata->dsb->mode & TPDM_DSB_MODE_PERF)
*val |= TPDM_DSB_CR_MODE;
else
*val &= ~TPDM_DSB_CR_MODE;
}
static void set_dsb_tier(struct tpdm_drvdata *drvdata)
{
u32 val;
val = readl_relaxed(drvdata->base + TPDM_DSB_TIER);
/* Clear all relevant fields */
val &= ~(TPDM_DSB_TIER_PATT_TSENAB | TPDM_DSB_TIER_PATT_TYPE |
TPDM_DSB_TIER_XTRIG_TSENAB);
/* Set pattern timestamp type and enablement */
if (drvdata->dsb->patt_ts) {
val |= TPDM_DSB_TIER_PATT_TSENAB;
if (drvdata->dsb->patt_type)
val |= TPDM_DSB_TIER_PATT_TYPE;
else
val &= ~TPDM_DSB_TIER_PATT_TYPE;
} else {
val &= ~TPDM_DSB_TIER_PATT_TSENAB;
}
/* Set trigger timestamp */
if (drvdata->dsb->trig_ts)
val |= TPDM_DSB_TIER_XTRIG_TSENAB;
else
val &= ~TPDM_DSB_TIER_XTRIG_TSENAB;
writel_relaxed(val, drvdata->base + TPDM_DSB_TIER);
}
static void set_dsb_msr(struct tpdm_drvdata *drvdata)
{
int i;
for (i = 0; i < drvdata->dsb_msr_num; i++)
writel_relaxed(drvdata->dsb->msr[i],
drvdata->base + TPDM_DSB_MSR(i));
}
static void tpdm_enable_dsb(struct tpdm_drvdata *drvdata)
{
u32 val, i;
for (i = 0; i < TPDM_DSB_MAX_EDCR; i++)
writel_relaxed(drvdata->dsb->edge_ctrl[i],
drvdata->base + TPDM_DSB_EDCR(i));
for (i = 0; i < TPDM_DSB_MAX_EDCMR; i++)
writel_relaxed(drvdata->dsb->edge_ctrl_mask[i],
drvdata->base + TPDM_DSB_EDCMR(i));
for (i = 0; i < TPDM_DSB_MAX_PATT; i++) {
writel_relaxed(drvdata->dsb->patt_val[i],
drvdata->base + TPDM_DSB_TPR(i));
writel_relaxed(drvdata->dsb->patt_mask[i],
drvdata->base + TPDM_DSB_TPMR(i));
writel_relaxed(drvdata->dsb->trig_patt[i],
drvdata->base + TPDM_DSB_XPR(i));
writel_relaxed(drvdata->dsb->trig_patt_mask[i],
drvdata->base + TPDM_DSB_XPMR(i));
}
set_dsb_tier(drvdata);
set_dsb_msr(drvdata);
val = readl_relaxed(drvdata->base + TPDM_DSB_CR);
/* Set the mode of DSB dataset */
set_dsb_mode(drvdata, &val);
/* Set trigger type */
if (drvdata->dsb->trig_type)
val |= TPDM_DSB_CR_TRIG_TYPE;
else
val &= ~TPDM_DSB_CR_TRIG_TYPE;
/* Set the enable bit of DSB control register to 1 */
val |= TPDM_DSB_CR_ENA;
writel_relaxed(val, drvdata->base + TPDM_DSB_CR);
}
/*
* TPDM enable operations
* The TPDM or Monitor serves as data collection component for various
* dataset types. It covers Basic Counts(BC), Tenure Counts(TC),
* Continuous Multi-Bit(CMB), Multi-lane CMB(MCMB) and Discrete Single
* Bit(DSB). This function will initialize the configuration according
* to the dataset type supported by the TPDM.
*/
static void __tpdm_enable(struct tpdm_drvdata *drvdata)
{
CS_UNLOCK(drvdata->base);
if (tpdm_has_dsb_dataset(drvdata))
tpdm_enable_dsb(drvdata);
CS_LOCK(drvdata->base);
}
static int tpdm_enable(struct coresight_device *csdev, struct perf_event *event,
enum cs_mode mode)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
spin_lock(&drvdata->spinlock);
if (drvdata->enable) {
spin_unlock(&drvdata->spinlock);
return -EBUSY;
}
__tpdm_enable(drvdata);
drvdata->enable = true;
spin_unlock(&drvdata->spinlock);
dev_dbg(drvdata->dev, "TPDM tracing enabled\n");
return 0;
}
static void tpdm_disable_dsb(struct tpdm_drvdata *drvdata)
{
u32 val;
/* Set the enable bit of DSB control register to 0 */
val = readl_relaxed(drvdata->base + TPDM_DSB_CR);
val &= ~TPDM_DSB_CR_ENA;
writel_relaxed(val, drvdata->base + TPDM_DSB_CR);
}
/* TPDM disable operations */
static void __tpdm_disable(struct tpdm_drvdata *drvdata)
{
CS_UNLOCK(drvdata->base);
if (tpdm_has_dsb_dataset(drvdata))
tpdm_disable_dsb(drvdata);
CS_LOCK(drvdata->base);
}
static void tpdm_disable(struct coresight_device *csdev,
struct perf_event *event)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
spin_lock(&drvdata->spinlock);
if (!drvdata->enable) {
spin_unlock(&drvdata->spinlock);
return;
}
__tpdm_disable(drvdata);
drvdata->enable = false;
spin_unlock(&drvdata->spinlock);
dev_dbg(drvdata->dev, "TPDM tracing disabled\n");
}
static const struct coresight_ops_source tpdm_source_ops = {
.enable = tpdm_enable,
.disable = tpdm_disable,
};
static const struct coresight_ops tpdm_cs_ops = {
.source_ops = &tpdm_source_ops,
};
static int tpdm_datasets_setup(struct tpdm_drvdata *drvdata)
{
u32 pidr;
/* Get the datasets present on the TPDM. */
pidr = readl_relaxed(drvdata->base + CORESIGHT_PERIPHIDR0);
drvdata->datasets |= pidr & GENMASK(TPDM_DATASETS - 1, 0);
if (tpdm_has_dsb_dataset(drvdata) && (!drvdata->dsb)) {
drvdata->dsb = devm_kzalloc(drvdata->dev,
sizeof(*drvdata->dsb), GFP_KERNEL);
if (!drvdata->dsb)
return -ENOMEM;
}
tpdm_reset_datasets(drvdata);
return 0;
}
static ssize_t reset_dataset_store(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t size)
{
int ret = 0;
unsigned long val;
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
ret = kstrtoul(buf, 0, &val);
if (ret || val != 1)
return -EINVAL;
spin_lock(&drvdata->spinlock);
tpdm_reset_datasets(drvdata);
spin_unlock(&drvdata->spinlock);
return size;
}
static DEVICE_ATTR_WO(reset_dataset);
/*
* value 1: 64 bits test data
* value 2: 32 bits test data
*/
static ssize_t integration_test_store(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t size)
{
int i, ret = 0;
unsigned long val;
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
ret = kstrtoul(buf, 10, &val);
if (ret)
return ret;
if (val != 1 && val != 2)
return -EINVAL;
if (!drvdata->enable)
return -EINVAL;
if (val == 1)
val = ATBCNTRL_VAL_64;
else
val = ATBCNTRL_VAL_32;
CS_UNLOCK(drvdata->base);
writel_relaxed(0x1, drvdata->base + TPDM_ITCNTRL);
for (i = 0; i < INTEGRATION_TEST_CYCLE; i++)
writel_relaxed(val, drvdata->base + TPDM_ITATBCNTRL);
writel_relaxed(0, drvdata->base + TPDM_ITCNTRL);
CS_LOCK(drvdata->base);
return size;
}
static DEVICE_ATTR_WO(integration_test);
static struct attribute *tpdm_attrs[] = {
&dev_attr_reset_dataset.attr,
&dev_attr_integration_test.attr,
NULL,
};
static struct attribute_group tpdm_attr_grp = {
.attrs = tpdm_attrs,
};
static ssize_t dsb_mode_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
return sysfs_emit(buf, "%x\n", drvdata->dsb->mode);
}
static ssize_t dsb_mode_store(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t size)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
unsigned long val;
if ((kstrtoul(buf, 0, &val)) || (val < 0) ||
(val & ~TPDM_DSB_MODE_MASK))
return -EINVAL;
spin_lock(&drvdata->spinlock);
drvdata->dsb->mode = val & TPDM_DSB_MODE_MASK;
spin_unlock(&drvdata->spinlock);
return size;
}
static DEVICE_ATTR_RW(dsb_mode);
static ssize_t ctrl_idx_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
return sysfs_emit(buf, "%u\n",
(unsigned int)drvdata->dsb->edge_ctrl_idx);
}
/*
* The EDCR registers can include up to 16 32-bit registers, and each
* one can be configured to control up to 16 edge detections(2 bits
* control one edge detection). So a total 256 edge detections can be
* configured. This function provides a way to set the index number of
* the edge detection which needs to be configured.
*/
static ssize_t ctrl_idx_store(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t size)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
unsigned long val;
if ((kstrtoul(buf, 0, &val)) || (val >= TPDM_DSB_MAX_LINES))
return -EINVAL;
spin_lock(&drvdata->spinlock);
drvdata->dsb->edge_ctrl_idx = val;
spin_unlock(&drvdata->spinlock);
return size;
}
static DEVICE_ATTR_RW(ctrl_idx);
/*
* This function is used to control the edge detection according
* to the index number that has been set.
* "edge_ctrl" should be one of the following values.
* 0 - Rising edge detection
* 1 - Falling edge detection
* 2 - Rising and falling edge detection (toggle detection)
*/
static ssize_t ctrl_val_store(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t size)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
unsigned long val, edge_ctrl;
int reg;
if ((kstrtoul(buf, 0, &edge_ctrl)) || (edge_ctrl > 0x2))
return -EINVAL;
spin_lock(&drvdata->spinlock);
/*
* There are 2 bit per DSB Edge Control line.
* Thus we have 16 lines in a 32bit word.
*/
reg = EDCR_TO_WORD_IDX(drvdata->dsb->edge_ctrl_idx);
val = drvdata->dsb->edge_ctrl[reg];
val &= ~EDCR_TO_WORD_MASK(drvdata->dsb->edge_ctrl_idx);
val |= EDCR_TO_WORD_VAL(edge_ctrl, drvdata->dsb->edge_ctrl_idx);
drvdata->dsb->edge_ctrl[reg] = val;
spin_unlock(&drvdata->spinlock);
return size;
}
static DEVICE_ATTR_WO(ctrl_val);
static ssize_t ctrl_mask_store(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t size)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
unsigned long val;
u32 set;
int reg;
if ((kstrtoul(buf, 0, &val)) || (val & ~1UL))
return -EINVAL;
spin_lock(&drvdata->spinlock);
/*
* There is 1 bit per DSB Edge Control Mark line.
* Thus we have 32 lines in a 32bit word.
*/
reg = EDCMR_TO_WORD_IDX(drvdata->dsb->edge_ctrl_idx);
set = drvdata->dsb->edge_ctrl_mask[reg];
if (val)
set |= BIT(EDCMR_TO_WORD_SHIFT(drvdata->dsb->edge_ctrl_idx));
else
set &= ~BIT(EDCMR_TO_WORD_SHIFT(drvdata->dsb->edge_ctrl_idx));
drvdata->dsb->edge_ctrl_mask[reg] = set;
spin_unlock(&drvdata->spinlock);
return size;
}
static DEVICE_ATTR_WO(ctrl_mask);
static ssize_t enable_ts_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
return sysfs_emit(buf, "%u\n",
(unsigned int)drvdata->dsb->patt_ts);
}
/*
* value 1: Enable/Disable DSB pattern timestamp
*/
static ssize_t enable_ts_store(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t size)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
unsigned long val;
if ((kstrtoul(buf, 0, &val)) || (val & ~1UL))
return -EINVAL;
spin_lock(&drvdata->spinlock);
drvdata->dsb->patt_ts = !!val;
spin_unlock(&drvdata->spinlock);
return size;
}
static DEVICE_ATTR_RW(enable_ts);
static ssize_t set_type_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
return sysfs_emit(buf, "%u\n",
(unsigned int)drvdata->dsb->patt_type);
}
/*
* value 1: Set DSB pattern type
*/
static ssize_t set_type_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
unsigned long val;
if ((kstrtoul(buf, 0, &val)) || (val & ~1UL))
return -EINVAL;
spin_lock(&drvdata->spinlock);
drvdata->dsb->patt_type = val;
spin_unlock(&drvdata->spinlock);
return size;
}
static DEVICE_ATTR_RW(set_type);
static ssize_t dsb_trig_type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
return sysfs_emit(buf, "%u\n",
(unsigned int)drvdata->dsb->trig_type);
}
/*
* Trigger type (boolean):
* false - Disable trigger type.
* true - Enable trigger type.
*/
static ssize_t dsb_trig_type_store(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t size)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
unsigned long val;
if ((kstrtoul(buf, 0, &val)) || (val & ~1UL))
return -EINVAL;
spin_lock(&drvdata->spinlock);
if (val)
drvdata->dsb->trig_type = true;
else
drvdata->dsb->trig_type = false;
spin_unlock(&drvdata->spinlock);
return size;
}
static DEVICE_ATTR_RW(dsb_trig_type);
static ssize_t dsb_trig_ts_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
return sysfs_emit(buf, "%u\n",
(unsigned int)drvdata->dsb->trig_ts);
}
/*
* Trigger timestamp (boolean):
* false - Disable trigger timestamp.
* true - Enable trigger timestamp.
*/
static ssize_t dsb_trig_ts_store(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t size)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(dev->parent);
unsigned long val;
if ((kstrtoul(buf, 0, &val)) || (val & ~1UL))
return -EINVAL;
spin_lock(&drvdata->spinlock);
if (val)
drvdata->dsb->trig_ts = true;
else
drvdata->dsb->trig_ts = false;
spin_unlock(&drvdata->spinlock);
return size;
}
static DEVICE_ATTR_RW(dsb_trig_ts);
static struct attribute *tpdm_dsb_edge_attrs[] = {
&dev_attr_ctrl_idx.attr,
&dev_attr_ctrl_val.attr,
&dev_attr_ctrl_mask.attr,
DSB_EDGE_CTRL_ATTR(0),
DSB_EDGE_CTRL_ATTR(1),
DSB_EDGE_CTRL_ATTR(2),
DSB_EDGE_CTRL_ATTR(3),
DSB_EDGE_CTRL_ATTR(4),
DSB_EDGE_CTRL_ATTR(5),
DSB_EDGE_CTRL_ATTR(6),
DSB_EDGE_CTRL_ATTR(7),
DSB_EDGE_CTRL_ATTR(8),
DSB_EDGE_CTRL_ATTR(9),
DSB_EDGE_CTRL_ATTR(10),
DSB_EDGE_CTRL_ATTR(11),
DSB_EDGE_CTRL_ATTR(12),
DSB_EDGE_CTRL_ATTR(13),
DSB_EDGE_CTRL_ATTR(14),
DSB_EDGE_CTRL_ATTR(15),
DSB_EDGE_CTRL_MASK_ATTR(0),
DSB_EDGE_CTRL_MASK_ATTR(1),
DSB_EDGE_CTRL_MASK_ATTR(2),
DSB_EDGE_CTRL_MASK_ATTR(3),
DSB_EDGE_CTRL_MASK_ATTR(4),
DSB_EDGE_CTRL_MASK_ATTR(5),
DSB_EDGE_CTRL_MASK_ATTR(6),
DSB_EDGE_CTRL_MASK_ATTR(7),
NULL,
};
static struct attribute *tpdm_dsb_trig_patt_attrs[] = {
DSB_TRIG_PATT_ATTR(0),
DSB_TRIG_PATT_ATTR(1),
DSB_TRIG_PATT_ATTR(2),
DSB_TRIG_PATT_ATTR(3),
DSB_TRIG_PATT_ATTR(4),
DSB_TRIG_PATT_ATTR(5),
DSB_TRIG_PATT_ATTR(6),
DSB_TRIG_PATT_ATTR(7),
DSB_TRIG_PATT_MASK_ATTR(0),
DSB_TRIG_PATT_MASK_ATTR(1),
DSB_TRIG_PATT_MASK_ATTR(2),
DSB_TRIG_PATT_MASK_ATTR(3),
DSB_TRIG_PATT_MASK_ATTR(4),
DSB_TRIG_PATT_MASK_ATTR(5),
DSB_TRIG_PATT_MASK_ATTR(6),
DSB_TRIG_PATT_MASK_ATTR(7),
NULL,
};
static struct attribute *tpdm_dsb_patt_attrs[] = {
DSB_PATT_ATTR(0),
DSB_PATT_ATTR(1),
DSB_PATT_ATTR(2),
DSB_PATT_ATTR(3),
DSB_PATT_ATTR(4),
DSB_PATT_ATTR(5),
DSB_PATT_ATTR(6),
DSB_PATT_ATTR(7),
DSB_PATT_MASK_ATTR(0),
DSB_PATT_MASK_ATTR(1),
DSB_PATT_MASK_ATTR(2),
DSB_PATT_MASK_ATTR(3),
DSB_PATT_MASK_ATTR(4),
DSB_PATT_MASK_ATTR(5),
DSB_PATT_MASK_ATTR(6),
DSB_PATT_MASK_ATTR(7),
&dev_attr_enable_ts.attr,
&dev_attr_set_type.attr,
NULL,
};
static struct attribute *tpdm_dsb_msr_attrs[] = {
DSB_MSR_ATTR(0),
DSB_MSR_ATTR(1),
DSB_MSR_ATTR(2),
DSB_MSR_ATTR(3),
DSB_MSR_ATTR(4),
DSB_MSR_ATTR(5),
DSB_MSR_ATTR(6),
DSB_MSR_ATTR(7),
DSB_MSR_ATTR(8),
DSB_MSR_ATTR(9),
DSB_MSR_ATTR(10),
DSB_MSR_ATTR(11),
DSB_MSR_ATTR(12),
DSB_MSR_ATTR(13),
DSB_MSR_ATTR(14),
DSB_MSR_ATTR(15),
DSB_MSR_ATTR(16),
DSB_MSR_ATTR(17),
DSB_MSR_ATTR(18),
DSB_MSR_ATTR(19),
DSB_MSR_ATTR(20),
DSB_MSR_ATTR(21),
DSB_MSR_ATTR(22),
DSB_MSR_ATTR(23),
DSB_MSR_ATTR(24),
DSB_MSR_ATTR(25),
DSB_MSR_ATTR(26),
DSB_MSR_ATTR(27),
DSB_MSR_ATTR(28),
DSB_MSR_ATTR(29),
DSB_MSR_ATTR(30),
DSB_MSR_ATTR(31),
NULL,
};
static struct attribute *tpdm_dsb_attrs[] = {
&dev_attr_dsb_mode.attr,
&dev_attr_dsb_trig_ts.attr,
&dev_attr_dsb_trig_type.attr,
NULL,
};
static struct attribute_group tpdm_dsb_attr_grp = {
.attrs = tpdm_dsb_attrs,
.is_visible = tpdm_dsb_is_visible,
};
static struct attribute_group tpdm_dsb_edge_grp = {
.attrs = tpdm_dsb_edge_attrs,
.is_visible = tpdm_dsb_is_visible,
.name = "dsb_edge",
};
static struct attribute_group tpdm_dsb_trig_patt_grp = {
.attrs = tpdm_dsb_trig_patt_attrs,
.is_visible = tpdm_dsb_is_visible,
.name = "dsb_trig_patt",
};
static struct attribute_group tpdm_dsb_patt_grp = {
.attrs = tpdm_dsb_patt_attrs,
.is_visible = tpdm_dsb_is_visible,
.name = "dsb_patt",
};
static struct attribute_group tpdm_dsb_msr_grp = {
.attrs = tpdm_dsb_msr_attrs,
.is_visible = tpdm_dsb_msr_is_visible,
.name = "dsb_msr",
};
static const struct attribute_group *tpdm_attr_grps[] = {
&tpdm_attr_grp,
&tpdm_dsb_attr_grp,
&tpdm_dsb_edge_grp,
&tpdm_dsb_trig_patt_grp,
&tpdm_dsb_patt_grp,
&tpdm_dsb_msr_grp,
NULL,
};
static int tpdm_probe(struct amba_device *adev, const struct amba_id *id)
{
void __iomem *base;
struct device *dev = &adev->dev;
struct coresight_platform_data *pdata;
struct tpdm_drvdata *drvdata;
struct coresight_desc desc = { 0 };
int ret;
pdata = coresight_get_platform_data(dev);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
adev->dev.platform_data = pdata;
/* driver data*/
drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
if (!drvdata)
return -ENOMEM;
drvdata->dev = &adev->dev;
dev_set_drvdata(dev, drvdata);
base = devm_ioremap_resource(dev, &adev->res);
if (IS_ERR(base))
return PTR_ERR(base);
drvdata->base = base;
ret = tpdm_datasets_setup(drvdata);
if (ret)
return ret;
if (drvdata && tpdm_has_dsb_dataset(drvdata))
of_property_read_u32(drvdata->dev->of_node,
"qcom,dsb-msrs-num", &drvdata->dsb_msr_num);
/* Set up coresight component description */
desc.name = coresight_alloc_device_name(&tpdm_devs, dev);
if (!desc.name)
return -ENOMEM;
desc.type = CORESIGHT_DEV_TYPE_SOURCE;
desc.subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_TPDM;
desc.ops = &tpdm_cs_ops;
desc.pdata = adev->dev.platform_data;
desc.dev = &adev->dev;
desc.access = CSDEV_ACCESS_IOMEM(base);
desc.groups = tpdm_attr_grps;
drvdata->csdev = coresight_register(&desc);
if (IS_ERR(drvdata->csdev))
return PTR_ERR(drvdata->csdev);
spin_lock_init(&drvdata->spinlock);
/* Decrease pm refcount when probe is done.*/
pm_runtime_put(&adev->dev);
return 0;
}
static void tpdm_remove(struct amba_device *adev)
{
struct tpdm_drvdata *drvdata = dev_get_drvdata(&adev->dev);
coresight_unregister(drvdata->csdev);
}
/*
* Different TPDM has different periph id.
* The difference is 0-7 bits' value. So ignore 0-7 bits.
*/
static struct amba_id tpdm_ids[] = {
{
.id = 0x000f0e00,
.mask = 0x000fff00,
},
{ 0, 0},
};
static struct amba_driver tpdm_driver = {
.drv = {
.name = "coresight-tpdm",
.owner = THIS_MODULE,
.suppress_bind_attrs = true,
},
.probe = tpdm_probe,
.id_table = tpdm_ids,
.remove = tpdm_remove,
};
module_amba_driver(tpdm_driver);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Trace, Profiling & Diagnostic Monitor driver");
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