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1 | /* |
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 |
4 | * for more details. |
5 | * |
6 | * Copyright (C) 2012 Cavium, Inc. |
7 | * |
8 | * Copyright (C) 2009 Wind River Systems, |
9 | * written by Ralf Baechle <ralf@linux-mips.org> |
10 | */ |
11 | #include <linux/module.h> |
12 | #include <linux/init.h> |
13 | #include <linux/slab.h> |
14 | #include <linux/io.h> |
15 | #include <linux/edac.h> |
16 | |
17 | #include <asm/octeon/cvmx.h> |
18 | |
19 | #include "edac_core.h" |
20 | #include "edac_module.h" |
21 | |
22 | #define EDAC_MOD_STR "octeon-l2c" |
23 | |
24 | static void octeon_l2c_poll_oct1(struct edac_device_ctl_info *l2c) |
25 | { |
26 | union cvmx_l2t_err l2t_err, l2t_err_reset; |
27 | union cvmx_l2d_err l2d_err, l2d_err_reset; |
28 | |
29 | l2t_err_reset.u64 = 0; |
30 | l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR); |
31 | if (l2t_err.s.sec_err) { |
32 | edac_device_handle_ce(l2c, 0, 0, |
33 | "Tag Single bit error (corrected)"); |
34 | l2t_err_reset.s.sec_err = 1; |
35 | } |
36 | if (l2t_err.s.ded_err) { |
37 | edac_device_handle_ue(l2c, 0, 0, |
38 | "Tag Double bit error (detected)"); |
39 | l2t_err_reset.s.ded_err = 1; |
40 | } |
41 | if (l2t_err_reset.u64) |
42 | cvmx_write_csr(CVMX_L2T_ERR, l2t_err_reset.u64); |
43 | |
44 | l2d_err_reset.u64 = 0; |
45 | l2d_err.u64 = cvmx_read_csr(CVMX_L2D_ERR); |
46 | if (l2d_err.s.sec_err) { |
47 | edac_device_handle_ce(l2c, 0, 1, |
48 | "Data Single bit error (corrected)"); |
49 | l2d_err_reset.s.sec_err = 1; |
50 | } |
51 | if (l2d_err.s.ded_err) { |
52 | edac_device_handle_ue(l2c, 0, 1, |
53 | "Data Double bit error (detected)"); |
54 | l2d_err_reset.s.ded_err = 1; |
55 | } |
56 | if (l2d_err_reset.u64) |
57 | cvmx_write_csr(CVMX_L2D_ERR, l2d_err_reset.u64); |
58 | |
59 | } |
60 | |
61 | static void _octeon_l2c_poll_oct2(struct edac_device_ctl_info *l2c, int tad) |
62 | { |
63 | union cvmx_l2c_err_tdtx err_tdtx, err_tdtx_reset; |
64 | union cvmx_l2c_err_ttgx err_ttgx, err_ttgx_reset; |
65 | char buf1[64]; |
66 | char buf2[80]; |
67 | |
68 | err_tdtx_reset.u64 = 0; |
69 | err_tdtx.u64 = cvmx_read_csr(CVMX_L2C_ERR_TDTX(tad)); |
70 | if (err_tdtx.s.dbe || err_tdtx.s.sbe || |
71 | err_tdtx.s.vdbe || err_tdtx.s.vsbe) |
72 | snprintf(buf1, sizeof(buf1), |
73 | "type:%d, syn:0x%x, way:%d", |
74 | err_tdtx.s.type, err_tdtx.s.syn, err_tdtx.s.wayidx); |
75 | |
76 | if (err_tdtx.s.dbe) { |
77 | snprintf(buf2, sizeof(buf2), |
78 | "L2D Double bit error (detected):%s", buf1); |
79 | err_tdtx_reset.s.dbe = 1; |
80 | edac_device_handle_ue(l2c, tad, 1, buf2); |
81 | } |
82 | if (err_tdtx.s.sbe) { |
83 | snprintf(buf2, sizeof(buf2), |
84 | "L2D Single bit error (corrected):%s", buf1); |
85 | err_tdtx_reset.s.sbe = 1; |
86 | edac_device_handle_ce(l2c, tad, 1, buf2); |
87 | } |
88 | if (err_tdtx.s.vdbe) { |
89 | snprintf(buf2, sizeof(buf2), |
90 | "VBF Double bit error (detected):%s", buf1); |
91 | err_tdtx_reset.s.vdbe = 1; |
92 | edac_device_handle_ue(l2c, tad, 1, buf2); |
93 | } |
94 | if (err_tdtx.s.vsbe) { |
95 | snprintf(buf2, sizeof(buf2), |
96 | "VBF Single bit error (corrected):%s", buf1); |
97 | err_tdtx_reset.s.vsbe = 1; |
98 | edac_device_handle_ce(l2c, tad, 1, buf2); |
99 | } |
100 | if (err_tdtx_reset.u64) |
101 | cvmx_write_csr(CVMX_L2C_ERR_TDTX(tad), err_tdtx_reset.u64); |
102 | |
103 | err_ttgx_reset.u64 = 0; |
104 | err_ttgx.u64 = cvmx_read_csr(CVMX_L2C_ERR_TTGX(tad)); |
105 | |
106 | if (err_ttgx.s.dbe || err_ttgx.s.sbe) |
107 | snprintf(buf1, sizeof(buf1), |
108 | "type:%d, syn:0x%x, way:%d", |
109 | err_ttgx.s.type, err_ttgx.s.syn, err_ttgx.s.wayidx); |
110 | |
111 | if (err_ttgx.s.dbe) { |
112 | snprintf(buf2, sizeof(buf2), |
113 | "Tag Double bit error (detected):%s", buf1); |
114 | err_ttgx_reset.s.dbe = 1; |
115 | edac_device_handle_ue(l2c, tad, 0, buf2); |
116 | } |
117 | if (err_ttgx.s.sbe) { |
118 | snprintf(buf2, sizeof(buf2), |
119 | "Tag Single bit error (corrected):%s", buf1); |
120 | err_ttgx_reset.s.sbe = 1; |
121 | edac_device_handle_ce(l2c, tad, 0, buf2); |
122 | } |
123 | if (err_ttgx_reset.u64) |
124 | cvmx_write_csr(CVMX_L2C_ERR_TTGX(tad), err_ttgx_reset.u64); |
125 | } |
126 | |
127 | static void octeon_l2c_poll_oct2(struct edac_device_ctl_info *l2c) |
128 | { |
129 | int i; |
130 | for (i = 0; i < l2c->nr_instances; i++) |
131 | _octeon_l2c_poll_oct2(l2c, i); |
132 | } |
133 | |
134 | static int octeon_l2c_probe(struct platform_device *pdev) |
135 | { |
136 | struct edac_device_ctl_info *l2c; |
137 | |
138 | int num_tads = OCTEON_IS_MODEL(OCTEON_CN68XX) ? 4 : 1; |
139 | |
140 | /* 'Tags' are block 0, 'Data' is block 1*/ |
141 | l2c = edac_device_alloc_ctl_info(0, "l2c", num_tads, "l2c", 2, 0, |
142 | NULL, 0, edac_device_alloc_index()); |
143 | if (!l2c) |
144 | return -ENOMEM; |
145 | |
146 | l2c->dev = &pdev->dev; |
147 | platform_set_drvdata(pdev, l2c); |
148 | l2c->dev_name = dev_name(&pdev->dev); |
149 | |
150 | l2c->mod_name = "octeon-l2c"; |
151 | l2c->ctl_name = "octeon_l2c_err"; |
152 | |
153 | |
154 | if (OCTEON_IS_MODEL(OCTEON_FAM_1_PLUS)) { |
155 | union cvmx_l2t_err l2t_err; |
156 | union cvmx_l2d_err l2d_err; |
157 | |
158 | l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR); |
159 | l2t_err.s.sec_intena = 0; /* We poll */ |
160 | l2t_err.s.ded_intena = 0; |
161 | cvmx_write_csr(CVMX_L2T_ERR, l2t_err.u64); |
162 | |
163 | l2d_err.u64 = cvmx_read_csr(CVMX_L2D_ERR); |
164 | l2d_err.s.sec_intena = 0; /* We poll */ |
165 | l2d_err.s.ded_intena = 0; |
166 | cvmx_write_csr(CVMX_L2T_ERR, l2d_err.u64); |
167 | |
168 | l2c->edac_check = octeon_l2c_poll_oct1; |
169 | } else { |
170 | /* OCTEON II */ |
171 | l2c->edac_check = octeon_l2c_poll_oct2; |
172 | } |
173 | |
174 | if (edac_device_add_device(l2c) > 0) { |
175 | pr_err("%s: edac_device_add_device() failed\n", __func__); |
176 | goto err; |
177 | } |
178 | |
179 | |
180 | return 0; |
181 | |
182 | err: |
183 | edac_device_free_ctl_info(l2c); |
184 | |
185 | return -ENXIO; |
186 | } |
187 | |
188 | static int octeon_l2c_remove(struct platform_device *pdev) |
189 | { |
190 | struct edac_device_ctl_info *l2c = platform_get_drvdata(pdev); |
191 | |
192 | edac_device_del_device(&pdev->dev); |
193 | edac_device_free_ctl_info(l2c); |
194 | |
195 | return 0; |
196 | } |
197 | |
198 | static struct platform_driver octeon_l2c_driver = { |
199 | .probe = octeon_l2c_probe, |
200 | .remove = octeon_l2c_remove, |
201 | .driver = { |
202 | .name = "octeon_l2c_edac", |
203 | } |
204 | }; |
205 | module_platform_driver(octeon_l2c_driver); |
206 | |
207 | MODULE_LICENSE("GPL"); |
208 | MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>"); |
209 |
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