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drm/amdgpu: adding xgmi error monitoring

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monitor xgmi errors via mc pie status through fica registers.

Signed-off-by: Jonathan Kim <Jonathan.Kim@amd.com>
Reviewed-by: Kent Russell <Kent.Russell@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jonathan Kim 2019-07-11 13:14:02 -04:00 committed by Alex Deucher
parent 64671c0fdc
commit 24f9aacfb0
1 changed files with 36 additions and 2 deletions
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38
drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
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@ -25,7 +25,7 @@
#include "amdgpu.h"
#include "amdgpu_xgmi.h"
#include "amdgpu_smu.h"
#include "df/df_3_6_offset.h"
static DEFINE_MUTEX(xgmi_mutex);
@ -131,9 +131,37 @@ static ssize_t amdgpu_xgmi_show_device_id(struct device *dev,
}
#define AMDGPU_XGMI_SET_FICAA(o) ((o) | 0x456801)
static ssize_t amdgpu_xgmi_show_error(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
uint32_t ficaa_pie_ctl_in, ficaa_pie_status_in;
uint64_t fica_out;
unsigned int error_count = 0;
ficaa_pie_ctl_in = AMDGPU_XGMI_SET_FICAA(0x200);
ficaa_pie_status_in = AMDGPU_XGMI_SET_FICAA(0x208);
fica_out = adev->df_funcs->get_fica(adev, ficaa_pie_ctl_in);
if (fica_out != 0x1f)
pr_err("xGMI error counters not enabled!\n");
fica_out = adev->df_funcs->get_fica(adev, ficaa_pie_status_in);
if ((fica_out & 0xffff) == 2)
error_count = ((fica_out >> 62) & 0x1) + (fica_out >> 63);
adev->df_funcs->set_fica(adev, ficaa_pie_status_in, 0, 0);
return snprintf(buf, PAGE_SIZE, "%d\n", error_count);
}
static DEVICE_ATTR(xgmi_device_id, S_IRUGO, amdgpu_xgmi_show_device_id, NULL);
static DEVICE_ATTR(xgmi_error, S_IRUGO, amdgpu_xgmi_show_error, NULL);
static int amdgpu_xgmi_sysfs_add_dev_info(struct amdgpu_device *adev,
struct amdgpu_hive_info *hive)
@ -148,6 +176,12 @@ static int amdgpu_xgmi_sysfs_add_dev_info(struct amdgpu_device *adev,
return ret;
}
/* Create xgmi error file */
ret = device_create_file(adev->dev, &dev_attr_xgmi_error);
if (ret)
pr_err("failed to create xgmi_error\n");
/* Create sysfs link to hive info folder on the first device */
if (adev != hive->adev) {
ret = sysfs_create_link(&adev->dev->kobj, hive->kobj,