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drm/amdgpu: Allow to reset to EERPOM table.

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The table grows quickly during debug/development effort when
multiple RAS errors are injected. Allow to avoid this by setting
table header back to empty if needed.

v2: Switch to debugfs entry instead of load time parameter.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andrey Grodzovsky
2019-09-09 16:00:56 -04:00
committed by Alex Deucher
parent d01b400b1a
commit 084fe13b2c
1 changed files with 25 additions and 0 deletions
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25
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
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@@ -305,6 +305,22 @@ static ssize_t amdgpu_ras_debugfs_ctrl_write(struct file *f, const char __user *
return size;
}
/**
* DOC: AMDGPU RAS debugfs EEPROM table reset interface
*
* Usage: echo 1 > ../ras/ras_eeprom_reset will reset EEPROM table to 0 entries.
*/
static ssize_t amdgpu_ras_debugfs_eeprom_write(struct file *f, const char __user *buf,
size_t size, loff_t *pos)
{
struct amdgpu_device *adev = (struct amdgpu_device *)file_inode(f)->i_private;
int ret;
ret = amdgpu_ras_eeprom_reset_table(&adev->psp.ras.ras->eeprom_control);
return ret == 1 ? size : -EIO;
}
static const struct file_operations amdgpu_ras_debugfs_ctrl_ops = {
.owner = THIS_MODULE,
.read = NULL,
@@ -312,6 +328,13 @@ static const struct file_operations amdgpu_ras_debugfs_ctrl_ops = {
.llseek = default_llseek
};
static const struct file_operations amdgpu_ras_debugfs_eeprom_ops = {
.owner = THIS_MODULE,
.read = NULL,
.write = amdgpu_ras_debugfs_eeprom_write,
.llseek = default_llseek
};
static ssize_t amdgpu_ras_sysfs_read(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -953,6 +976,8 @@ static void amdgpu_ras_debugfs_create_ctrl_node(struct amdgpu_device *adev)
con->dir = debugfs_create_dir("ras", minor->debugfs_root);
con->ent = debugfs_create_file("ras_ctrl", S_IWUGO | S_IRUGO, con->dir,
adev, &amdgpu_ras_debugfs_ctrl_ops);
con->ent = debugfs_create_file("ras_eeprom_reset", S_IWUGO | S_IRUGO, con->dir,
adev, &amdgpu_ras_debugfs_eeprom_ops);
}
void amdgpu_ras_debugfs_create(struct amdgpu_device *adev,