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nvadsp: add debugfs file for adsp crash detection

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Added file adsp_health on which userspace app
can poll to check for ADSP crash or hang

Change-Id: If2265cf245759809da233ae366a3fbcb7f42d4b6
Signed-off-by: Gaurav Tendolkar <gtendolkar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1514462
(cherry picked from commit fb8c6a3119a6ceb4dc6a19bd548737d279f7cba6)
Signed-off-by: Hariharan Sivaraman <hariharans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1558929
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Nitin Kumbhar <nkumbhar@nvidia.com>
This commit is contained in:
Gaurav Tendolkar
2017-07-06 14:54:29 +05:30
committed by Laxman Dewangan
parent 3fb218dbaa
commit 02f9bb7fd0
2 changed files with 45 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/platform/tegra/nvadsp/dev.h
View File

@@ -201,6 +201,9 @@ struct nvadsp_drv_data {
bool adspff_init;
#endif
wait_queue_head_t adsp_health_waitq;
bool adsp_crashed;
u32 adsp_mem[ADSP_MEM_END];
bool adsp_unit_fpga;
u32 unit_fpga_reset[ADSP_UNIT_FPGA_RESET_END];

42
drivers/platform/tegra/nvadsp/os.c
View File

@@ -38,6 +38,7 @@
#include <linux/pm_runtime.h>
#include <linux/tegra-firmwares.h>
#include <linux/reset.h>
#include <linux/poll.h>
#include <asm/uaccess.h>
@@ -1781,6 +1782,10 @@ static irqreturn_t adsp_wdt_handler(int irq, void *arg)
struct device *dev = &data->pdev->dev;
drv_data = platform_get_drvdata(data->pdev);
drv_data->adsp_crashed = true;
wake_up_interruptible(&drv_data->adsp_health_waitq);
if (!drv_data->adsp_unit_fpga) {
dev_crit(dev, "ADSP OS Hanged or Crashed! Restarting...\n");
schedule_work(&data->restart_os_work);
@@ -1850,6 +1855,37 @@ static int adsp_create_os_version(struct dentry *adsp_debugfs_root)
}
return 0;
}
static unsigned int adsp_health_poll(struct file *file,
poll_table *wait)
{
struct nvadsp_drv_data *drv_data = platform_get_drvdata(priv.pdev);
poll_wait(file, &drv_data->adsp_health_waitq, wait);
if (drv_data->adsp_crashed)
return POLLIN | POLLRDNORM;
return 0;
}
static const struct file_operations adsp_health_fops = {
.poll = adsp_health_poll,
};
static int adsp_create_adsp_health(struct dentry *adsp_debugfs_root)
{
struct device *dev = &priv.pdev->dev;
struct dentry *d;
d = debugfs_create_file("adsp_health", RO_MODE, adsp_debugfs_root,
NULL, &adsp_health_fops);
if (!d) {
dev_err(dev, "failed to create adsp_health\n");
return -EINVAL;
}
return 0;
}
#endif
static ssize_t tegrafw_read_adsp(struct device *dev,
@@ -1912,6 +1948,12 @@ int __init nvadsp_os_probe(struct platform_device *pdev)
if (adsp_create_os_version(drv_data->adsp_debugfs_root))
dev_err(dev, "unable to create adsp_version file\n");
if (adsp_create_adsp_health(drv_data->adsp_debugfs_root))
dev_err(dev, "unable to create adsp_health file\n");
drv_data->adsp_crashed = false;
init_waitqueue_head(&drv_data->adsp_health_waitq);
#endif /* CONFIG_DEBUG_FS */
devm_tegrafw_register(dev, "APE", TFW_DONT_CACHE,