2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 2009 Wind River Systems,
7 * written by Ralf Baechle <ralf@linux-mips.org>
9 #include <linux/module.h>
10 #include <linux/init.h>
11 #include <linux/slab.h>
13 #include <linux/edac.h>
15 #include <asm/octeon/cvmx.h>
17 #include "edac_core.h"
18 #include "edac_module.h"
20 #define EDAC_MOD_STR "octeon-l2c"
22 static void co_l2c_poll(struct edac_device_ctl_info
*l2c
)
24 union cvmx_l2t_err l2t_err
;
26 l2t_err
.u64
= cvmx_read_csr(CVMX_L2T_ERR
);
27 if (l2t_err
.s
.sec_err
) {
28 edac_device_handle_ce(l2c
, 0, 0,
29 "Single bit error (corrected)");
30 l2t_err
.s
.sec_err
= 1; /* Reset */
31 cvmx_write_csr(CVMX_L2T_ERR
, l2t_err
.u64
);
33 if (l2t_err
.s
.ded_err
) {
34 edac_device_handle_ue(l2c
, 0, 0,
35 "Double bit error (corrected)");
36 l2t_err
.s
.ded_err
= 1; /* Reset */
37 cvmx_write_csr(CVMX_L2T_ERR
, l2t_err
.u64
);
41 static int __devinit
co_l2c_probe(struct platform_device
*pdev
)
43 struct edac_device_ctl_info
*l2c
;
44 union cvmx_l2t_err l2t_err
;
47 l2c
= edac_device_alloc_ctl_info(0, "l2c", 1, NULL
, 0, 0,
48 NULL
, 0, edac_device_alloc_index());
52 l2c
->dev
= &pdev
->dev
;
53 platform_set_drvdata(pdev
, l2c
);
54 l2c
->dev_name
= dev_name(&pdev
->dev
);
56 l2c
->mod_name
= "octeon-l2c";
57 l2c
->ctl_name
= "octeon_l2c_err";
58 l2c
->edac_check
= co_l2c_poll
;
60 if (edac_device_add_device(l2c
) > 0) {
61 pr_err("%s: edac_device_add_device() failed\n", __func__
);
65 l2t_err
.u64
= cvmx_read_csr(CVMX_L2T_ERR
);
66 l2t_err
.s
.sec_intena
= 0; /* We poll */
67 l2t_err
.s
.ded_intena
= 0;
68 l2t_err
.s
.sec_err
= 1; /* Clear, just in case */
69 l2t_err
.s
.ded_err
= 1;
70 cvmx_write_csr(CVMX_L2T_ERR
, l2t_err
.u64
);
75 edac_device_free_ctl_info(l2c
);
80 static int co_l2c_remove(struct platform_device
*pdev
)
82 struct edac_device_ctl_info
*l2c
= platform_get_drvdata(pdev
);
84 edac_device_del_device(&pdev
->dev
);
85 edac_device_free_ctl_info(l2c
);
90 static struct platform_driver co_l2c_driver
= {
91 .probe
= co_l2c_probe
,
92 .remove
= co_l2c_remove
,
94 .name
= "co_l2c_edac",
98 static int __init
co_edac_init(void)
102 ret
= platform_driver_register(&co_l2c_driver
);
104 pr_warning(EDAC_MOD_STR
" EDAC failed to register\n");
109 static void __exit
co_edac_exit(void)
111 platform_driver_unregister(&co_l2c_driver
);
114 module_init(co_edac_init
);
115 module_exit(co_edac_exit
);
117 MODULE_LICENSE("GPL");
118 MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");