Commit 084fe13b authored by Andrey Grodzovsky's avatar Andrey Grodzovsky Committed by Alex Deucher
Browse files

drm/amdgpu: Allow to reset to EERPOM table. 



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: default avatarAndrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: default avatarTao Zhou <tao.zhou1@amd.com>
Reviewed-by: default avatarGuchun Chen <guchun.chen@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent d01b400b

drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c

+25 −0
Original line number Diff line number Diff line
@@ -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,

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