static void err_inject_exit(void)
{
unregister_hotcpu_notifier(&cpu_notifier_err_inject.nb);
debugfs_remove_recursive(dir);
}
void oprofile_timer_exit(void)
{
unregister_hotcpu_notifier(&oprofile_cpu_notifier);
}
static void jtag_mm_etm_remove(void)
{
unregister_hotcpu_notifier(&jtag_mm_etm_notifier);
}
static void err_inject_exit(void)
{
unregister_hotcpu_notifier(&err_inject_cpu_notifier);
}
static int etm_probe(struct amba_device *adev, const struct amba_id *id)
{
int ret;
void __iomem *base;
struct device *dev = &adev->dev;
struct coresight_platform_data *pdata = NULL;
struct etm_drvdata *drvdata;
struct resource *res = &adev->res;
struct coresight_desc *desc;
struct device_node *np = adev->dev.of_node;
desc = devm_kzalloc(dev, sizeof(*desc), GFP_KERNEL);
if (!desc)
return -ENOMEM;
drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
if (!drvdata)
return -ENOMEM;
if (np) {
pdata = of_get_coresight_platform_data(dev, np);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
adev->dev.platform_data = pdata;
drvdata->use_cp14 = of_property_read_bool(np, "arm,cp14");
}
drvdata->dev = &adev->dev;
dev_set_drvdata(dev, drvdata);
/* Validity for the resource is already checked by the AMBA core */
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base))
return PTR_ERR(base);
drvdata->base = base;
spin_lock_init(&drvdata->spinlock);
drvdata->atclk = devm_clk_get(&adev->dev, "atclk"); /* optional */
if (!IS_ERR(drvdata->atclk)) {
ret = clk_prepare_enable(drvdata->atclk);
if (ret)
return ret;
}
drvdata->cpu = pdata ? pdata->cpu : 0;
get_online_cpus();
etmdrvdata[drvdata->cpu] = drvdata;
if (!smp_call_function_single(drvdata->cpu, etm_os_unlock, drvdata, 1))
drvdata->os_unlock = true;
if (smp_call_function_single(drvdata->cpu,
etm_init_arch_data, drvdata, 1))
dev_err(dev, "ETM arch init failed\n");
if (!etm_count++)
register_hotcpu_notifier(&etm_cpu_notifier);
put_online_cpus();
if (etm_arch_supported(drvdata->arch) == false) {
ret = -EINVAL;
goto err_arch_supported;
}
etm_init_default_data(drvdata);
desc->type = CORESIGHT_DEV_TYPE_SOURCE;
desc->subtype.source_subtype = CORESIGHT_DEV_SUBTYPE_SOURCE_PROC;
desc->ops = &etm_cs_ops;
desc->pdata = pdata;
desc->dev = dev;
desc->groups = coresight_etm_groups;
drvdata->csdev = coresight_register(desc);
if (IS_ERR(drvdata->csdev)) {
ret = PTR_ERR(drvdata->csdev);
goto err_arch_supported;
}
pm_runtime_put(&adev->dev);
dev_info(dev, "%s initialized\n", (char *)id->data);
if (boot_enable) {
coresight_enable(drvdata->csdev);
drvdata->boot_enable = true;
}
return 0;
err_arch_supported:
if (--etm_count == 0)
unregister_hotcpu_notifier(&etm_cpu_notifier);
return ret;
}
