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NVIDIA: SAUCE: i2c: Error report injection utility support

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BugLink: https://bugs.launchpad.net/bugs/2072591

The HSI error report injection utility is an on-bench debug and test
utility which can be used by customers and SQA to test the end-to-end
error detection and reporting path.

Implement the callback function to integrate with the utility, and allow
injecting I2C HSI related error reports.

http://nvbugs/3877863

Signed-off-by: Prasun Kumar <prasunk@nvidia.com>
Reviewed-by: Akhil R <akhilrajeev@nvidia.com>
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Tested-by: Abhilash G <abhilashg@nvidia.com>
Reviewed-by: Abhilash G <abhilashg@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Jacob Martin <jacob.martin@canonical.com>
Acked-by: Noah Wager <noah.wager@canonical.com>
Signed-off-by: Noah Wager <noah.wager@canonical.com>
This commit is contained in:
Prasun Kumar
2022-11-30 07:36:11 +00:00
committed by Noah Wager
parent 955a3023d6
commit 4b0496bb32
1 changed files with 53 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/i2c/busses/i2c-tegra.c
+53
View File
@@ -28,6 +28,7 @@
#include <linux/pm_runtime.h>
#include <linux/reset.h>
#include <linux/tegra-epl.h>
#include <linux/tegra-hsierrrptinj.h>
#define BYTES_PER_FIFO_WORD 4
@@ -1800,6 +1801,37 @@ static int tegra_i2c_init_hardware(struct tegra_i2c_dev *i2c_dev)
return ret;
}
/* Error report injection test support is included */
static int i2c_inject_err_fsi(unsigned int inst_id, struct epl_error_report_frame err_rpt_frame,
void *data)
{
int err = -EFAULT;
struct tegra_i2c_dev *i2c_dev = (struct tegra_i2c_dev *)data;
/* Sanity check inst_id */
if (inst_id != i2c_dev->adapter.nr) {
dev_err(i2c_dev->dev, "Invalid Input -> Instance ID = 0x%04x\n", inst_id);
return -EINVAL;
}
/* Sanity check reporter_id */
if (err_rpt_frame.reporter_id != i2c_dev->epl_reporter_id) {
dev_err(i2c_dev->dev, "Invalid Input -> Reporter ID = 0x%04x\n",
err_rpt_frame.reporter_id);
return -EINVAL;
}
/* Report error to FSI */
err = epl_report_error(err_rpt_frame);
if (err != 0) {
dev_err(i2c_dev->dev, "Error injection failed for err_id: %u",
err_rpt_frame.error_code);
return -EFAULT;
}
return err;
}
static int tegra_i2c_probe(struct platform_device *pdev)
{
struct tegra_i2c_dev *i2c_dev;
@@ -1895,6 +1927,16 @@ static int tegra_i2c_probe(struct platform_device *pdev)
if (err)
goto release_rpm;
/* Register error reporting callback */
err = hsierrrpt_reg_cb(IP_I2C, i2c_dev->adapter.nr, i2c_inject_err_fsi, i2c_dev);
if (err != 0)
dev_info(i2c_dev->dev, "Err inj callback registration failed: %d", err);
/* Continue init despite err inj utility
* registration failure, as the err inj support
* is meant only for debug purposes.
*/
return 0;
release_rpm:
@@ -1910,6 +1952,17 @@ release_clocks:
static void tegra_i2c_remove(struct platform_device *pdev)
{
struct tegra_i2c_dev *i2c_dev = platform_get_drvdata(pdev);
int err;
err = hsierrrpt_dereg_cb(IP_I2C, i2c_dev->adapter.nr);
if (err != 0)
dev_info(i2c_dev->dev, "Err inj callback de-registration failed: %d", err);
/* Continue remove despite err inj utility
* de-registration failure, as the err inj support
* is meant only for debug purposes.
*/
i2c_del_adapter(&i2c_dev->adapter);
pm_runtime_force_suspend(i2c_dev->dev);