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0d442930 LH |
1 | /* |
2 | * APM X-Gene SoC EDAC (error detection and correction) | |
3 | * | |
4 | * Copyright (c) 2015, Applied Micro Circuits Corporation | |
5 | * Author: Feng Kan <fkan@apm.com> | |
6 | * Loc Ho <lho@apm.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
22 | #include <linux/ctype.h> | |
23 | #include <linux/edac.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/mfd/syscon.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/of.h> | |
28 | #include <linux/of_address.h> | |
29 | #include <linux/regmap.h> | |
30 | ||
31 | #include "edac_core.h" | |
09bd1b4f | 32 | #include "edac_module.h" |
0d442930 LH |
33 | |
34 | #define EDAC_MOD_STR "xgene_edac" | |
35 | ||
36 | /* Global error configuration status registers (CSR) */ | |
37 | #define PCPHPERRINTSTS 0x0000 | |
38 | #define PCPHPERRINTMSK 0x0004 | |
39 | #define MCU_CTL_ERR_MASK BIT(12) | |
40 | #define IOB_PA_ERR_MASK BIT(11) | |
41 | #define IOB_BA_ERR_MASK BIT(10) | |
42 | #define IOB_XGIC_ERR_MASK BIT(9) | |
43 | #define IOB_RB_ERR_MASK BIT(8) | |
44 | #define L3C_UNCORR_ERR_MASK BIT(5) | |
45 | #define MCU_UNCORR_ERR_MASK BIT(4) | |
46 | #define PMD3_MERR_MASK BIT(3) | |
47 | #define PMD2_MERR_MASK BIT(2) | |
48 | #define PMD1_MERR_MASK BIT(1) | |
49 | #define PMD0_MERR_MASK BIT(0) | |
50 | #define PCPLPERRINTSTS 0x0008 | |
51 | #define PCPLPERRINTMSK 0x000C | |
52 | #define CSW_SWITCH_TRACE_ERR_MASK BIT(2) | |
53 | #define L3C_CORR_ERR_MASK BIT(1) | |
54 | #define MCU_CORR_ERR_MASK BIT(0) | |
55 | #define MEMERRINTSTS 0x0010 | |
56 | #define MEMERRINTMSK 0x0014 | |
57 | ||
58 | struct xgene_edac { | |
59 | struct device *dev; | |
60 | struct regmap *csw_map; | |
61 | struct regmap *mcba_map; | |
62 | struct regmap *mcbb_map; | |
63 | struct regmap *efuse_map; | |
64 | void __iomem *pcp_csr; | |
65 | spinlock_t lock; | |
66 | struct dentry *dfs; | |
67 | ||
68 | struct list_head mcus; | |
69 | struct list_head pmds; | |
70 | ||
71 | struct mutex mc_lock; | |
72 | int mc_active_mask; | |
73 | int mc_registered_mask; | |
74 | }; | |
75 | ||
76 | static void xgene_edac_pcp_rd(struct xgene_edac *edac, u32 reg, u32 *val) | |
77 | { | |
78 | *val = readl(edac->pcp_csr + reg); | |
79 | } | |
80 | ||
81 | static void xgene_edac_pcp_clrbits(struct xgene_edac *edac, u32 reg, | |
82 | u32 bits_mask) | |
83 | { | |
84 | u32 val; | |
85 | ||
86 | spin_lock(&edac->lock); | |
87 | val = readl(edac->pcp_csr + reg); | |
88 | val &= ~bits_mask; | |
89 | writel(val, edac->pcp_csr + reg); | |
90 | spin_unlock(&edac->lock); | |
91 | } | |
92 | ||
93 | static void xgene_edac_pcp_setbits(struct xgene_edac *edac, u32 reg, | |
94 | u32 bits_mask) | |
95 | { | |
96 | u32 val; | |
97 | ||
98 | spin_lock(&edac->lock); | |
99 | val = readl(edac->pcp_csr + reg); | |
100 | val |= bits_mask; | |
101 | writel(val, edac->pcp_csr + reg); | |
102 | spin_unlock(&edac->lock); | |
103 | } | |
104 | ||
105 | /* Memory controller error CSR */ | |
106 | #define MCU_MAX_RANK 8 | |
107 | #define MCU_RANK_STRIDE 0x40 | |
108 | ||
109 | #define MCUGECR 0x0110 | |
110 | #define MCU_GECR_DEMANDUCINTREN_MASK BIT(0) | |
111 | #define MCU_GECR_BACKUCINTREN_MASK BIT(1) | |
112 | #define MCU_GECR_CINTREN_MASK BIT(2) | |
113 | #define MUC_GECR_MCUADDRERREN_MASK BIT(9) | |
114 | #define MCUGESR 0x0114 | |
115 | #define MCU_GESR_ADDRNOMATCH_ERR_MASK BIT(7) | |
116 | #define MCU_GESR_ADDRMULTIMATCH_ERR_MASK BIT(6) | |
117 | #define MCU_GESR_PHYP_ERR_MASK BIT(3) | |
118 | #define MCUESRR0 0x0314 | |
119 | #define MCU_ESRR_MULTUCERR_MASK BIT(3) | |
120 | #define MCU_ESRR_BACKUCERR_MASK BIT(2) | |
121 | #define MCU_ESRR_DEMANDUCERR_MASK BIT(1) | |
122 | #define MCU_ESRR_CERR_MASK BIT(0) | |
123 | #define MCUESRRA0 0x0318 | |
124 | #define MCUEBLRR0 0x031c | |
125 | #define MCU_EBLRR_ERRBANK_RD(src) (((src) & 0x00000007) >> 0) | |
126 | #define MCUERCRR0 0x0320 | |
127 | #define MCU_ERCRR_ERRROW_RD(src) (((src) & 0xFFFF0000) >> 16) | |
128 | #define MCU_ERCRR_ERRCOL_RD(src) ((src) & 0x00000FFF) | |
129 | #define MCUSBECNT0 0x0324 | |
130 | #define MCU_SBECNT_COUNT(src) ((src) & 0xFFFF) | |
131 | ||
132 | #define CSW_CSWCR 0x0000 | |
133 | #define CSW_CSWCR_DUALMCB_MASK BIT(0) | |
134 | ||
135 | #define MCBADDRMR 0x0000 | |
136 | #define MCBADDRMR_MCU_INTLV_MODE_MASK BIT(3) | |
137 | #define MCBADDRMR_DUALMCU_MODE_MASK BIT(2) | |
138 | #define MCBADDRMR_MCB_INTLV_MODE_MASK BIT(1) | |
139 | #define MCBADDRMR_ADDRESS_MODE_MASK BIT(0) | |
140 | ||
141 | struct xgene_edac_mc_ctx { | |
142 | struct list_head next; | |
143 | char *name; | |
144 | struct mem_ctl_info *mci; | |
145 | struct xgene_edac *edac; | |
146 | void __iomem *mcu_csr; | |
147 | u32 mcu_id; | |
148 | }; | |
149 | ||
150 | static ssize_t xgene_edac_mc_err_inject_write(struct file *file, | |
151 | const char __user *data, | |
152 | size_t count, loff_t *ppos) | |
153 | { | |
154 | struct mem_ctl_info *mci = file->private_data; | |
155 | struct xgene_edac_mc_ctx *ctx = mci->pvt_info; | |
156 | int i; | |
157 | ||
158 | for (i = 0; i < MCU_MAX_RANK; i++) { | |
159 | writel(MCU_ESRR_MULTUCERR_MASK | MCU_ESRR_BACKUCERR_MASK | | |
160 | MCU_ESRR_DEMANDUCERR_MASK | MCU_ESRR_CERR_MASK, | |
161 | ctx->mcu_csr + MCUESRRA0 + i * MCU_RANK_STRIDE); | |
162 | } | |
163 | return count; | |
164 | } | |
165 | ||
166 | static const struct file_operations xgene_edac_mc_debug_inject_fops = { | |
167 | .open = simple_open, | |
168 | .write = xgene_edac_mc_err_inject_write, | |
169 | .llseek = generic_file_llseek, | |
170 | }; | |
171 | ||
172 | static void xgene_edac_mc_create_debugfs_node(struct mem_ctl_info *mci) | |
173 | { | |
174 | if (!IS_ENABLED(CONFIG_EDAC_DEBUG)) | |
175 | return; | |
09bd1b4f | 176 | |
0d442930 LH |
177 | if (!mci->debugfs) |
178 | return; | |
09bd1b4f BP |
179 | |
180 | edac_debugfs_create_file("inject_ctrl", S_IWUSR, mci->debugfs, mci, | |
181 | &xgene_edac_mc_debug_inject_fops); | |
0d442930 LH |
182 | } |
183 | ||
184 | static void xgene_edac_mc_check(struct mem_ctl_info *mci) | |
185 | { | |
186 | struct xgene_edac_mc_ctx *ctx = mci->pvt_info; | |
187 | unsigned int pcp_hp_stat; | |
188 | unsigned int pcp_lp_stat; | |
189 | u32 reg; | |
190 | u32 rank; | |
191 | u32 bank; | |
192 | u32 count; | |
193 | u32 col_row; | |
194 | ||
195 | xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat); | |
196 | xgene_edac_pcp_rd(ctx->edac, PCPLPERRINTSTS, &pcp_lp_stat); | |
197 | if (!((MCU_UNCORR_ERR_MASK & pcp_hp_stat) || | |
198 | (MCU_CTL_ERR_MASK & pcp_hp_stat) || | |
199 | (MCU_CORR_ERR_MASK & pcp_lp_stat))) | |
200 | return; | |
201 | ||
202 | for (rank = 0; rank < MCU_MAX_RANK; rank++) { | |
203 | reg = readl(ctx->mcu_csr + MCUESRR0 + rank * MCU_RANK_STRIDE); | |
204 | ||
205 | /* Detect uncorrectable memory error */ | |
206 | if (reg & (MCU_ESRR_DEMANDUCERR_MASK | | |
207 | MCU_ESRR_BACKUCERR_MASK)) { | |
208 | /* Detected uncorrectable memory error */ | |
209 | edac_mc_chipset_printk(mci, KERN_ERR, "X-Gene", | |
210 | "MCU uncorrectable error at rank %d\n", rank); | |
211 | ||
212 | edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, | |
213 | 1, 0, 0, 0, 0, 0, -1, mci->ctl_name, ""); | |
214 | } | |
215 | ||
216 | /* Detect correctable memory error */ | |
217 | if (reg & MCU_ESRR_CERR_MASK) { | |
218 | bank = readl(ctx->mcu_csr + MCUEBLRR0 + | |
219 | rank * MCU_RANK_STRIDE); | |
220 | col_row = readl(ctx->mcu_csr + MCUERCRR0 + | |
221 | rank * MCU_RANK_STRIDE); | |
222 | count = readl(ctx->mcu_csr + MCUSBECNT0 + | |
223 | rank * MCU_RANK_STRIDE); | |
224 | edac_mc_chipset_printk(mci, KERN_WARNING, "X-Gene", | |
225 | "MCU correctable error at rank %d bank %d column %d row %d count %d\n", | |
226 | rank, MCU_EBLRR_ERRBANK_RD(bank), | |
227 | MCU_ERCRR_ERRCOL_RD(col_row), | |
228 | MCU_ERCRR_ERRROW_RD(col_row), | |
229 | MCU_SBECNT_COUNT(count)); | |
230 | ||
231 | edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, | |
232 | 1, 0, 0, 0, 0, 0, -1, mci->ctl_name, ""); | |
233 | } | |
234 | ||
235 | /* Clear all error registers */ | |
236 | writel(0x0, ctx->mcu_csr + MCUEBLRR0 + rank * MCU_RANK_STRIDE); | |
237 | writel(0x0, ctx->mcu_csr + MCUERCRR0 + rank * MCU_RANK_STRIDE); | |
238 | writel(0x0, ctx->mcu_csr + MCUSBECNT0 + | |
239 | rank * MCU_RANK_STRIDE); | |
240 | writel(reg, ctx->mcu_csr + MCUESRR0 + rank * MCU_RANK_STRIDE); | |
241 | } | |
242 | ||
243 | /* Detect memory controller error */ | |
244 | reg = readl(ctx->mcu_csr + MCUGESR); | |
245 | if (reg) { | |
246 | if (reg & MCU_GESR_ADDRNOMATCH_ERR_MASK) | |
247 | edac_mc_chipset_printk(mci, KERN_WARNING, "X-Gene", | |
248 | "MCU address miss-match error\n"); | |
249 | if (reg & MCU_GESR_ADDRMULTIMATCH_ERR_MASK) | |
250 | edac_mc_chipset_printk(mci, KERN_WARNING, "X-Gene", | |
251 | "MCU address multi-match error\n"); | |
252 | ||
253 | writel(reg, ctx->mcu_csr + MCUGESR); | |
254 | } | |
255 | } | |
256 | ||
257 | static void xgene_edac_mc_irq_ctl(struct mem_ctl_info *mci, bool enable) | |
258 | { | |
259 | struct xgene_edac_mc_ctx *ctx = mci->pvt_info; | |
260 | unsigned int val; | |
261 | ||
262 | if (edac_op_state != EDAC_OPSTATE_INT) | |
263 | return; | |
264 | ||
265 | mutex_lock(&ctx->edac->mc_lock); | |
266 | ||
267 | /* | |
268 | * As there is only single bit for enable error and interrupt mask, | |
269 | * we must only enable top level interrupt after all MCUs are | |
270 | * registered. Otherwise, if there is an error and the corresponding | |
271 | * MCU has not registered, the interrupt will never get cleared. To | |
272 | * determine all MCU have registered, we will keep track of active | |
273 | * MCUs and registered MCUs. | |
274 | */ | |
275 | if (enable) { | |
276 | /* Set registered MCU bit */ | |
277 | ctx->edac->mc_registered_mask |= 1 << ctx->mcu_id; | |
278 | ||
279 | /* Enable interrupt after all active MCU registered */ | |
280 | if (ctx->edac->mc_registered_mask == | |
281 | ctx->edac->mc_active_mask) { | |
282 | /* Enable memory controller top level interrupt */ | |
283 | xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK, | |
284 | MCU_UNCORR_ERR_MASK | | |
285 | MCU_CTL_ERR_MASK); | |
286 | xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK, | |
287 | MCU_CORR_ERR_MASK); | |
288 | } | |
289 | ||
290 | /* Enable MCU interrupt and error reporting */ | |
291 | val = readl(ctx->mcu_csr + MCUGECR); | |
292 | val |= MCU_GECR_DEMANDUCINTREN_MASK | | |
293 | MCU_GECR_BACKUCINTREN_MASK | | |
294 | MCU_GECR_CINTREN_MASK | | |
295 | MUC_GECR_MCUADDRERREN_MASK; | |
296 | writel(val, ctx->mcu_csr + MCUGECR); | |
297 | } else { | |
298 | /* Disable MCU interrupt */ | |
299 | val = readl(ctx->mcu_csr + MCUGECR); | |
300 | val &= ~(MCU_GECR_DEMANDUCINTREN_MASK | | |
301 | MCU_GECR_BACKUCINTREN_MASK | | |
302 | MCU_GECR_CINTREN_MASK | | |
303 | MUC_GECR_MCUADDRERREN_MASK); | |
304 | writel(val, ctx->mcu_csr + MCUGECR); | |
305 | ||
306 | /* Disable memory controller top level interrupt */ | |
307 | xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK, | |
308 | MCU_UNCORR_ERR_MASK | MCU_CTL_ERR_MASK); | |
309 | xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK, | |
310 | MCU_CORR_ERR_MASK); | |
311 | ||
312 | /* Clear registered MCU bit */ | |
313 | ctx->edac->mc_registered_mask &= ~(1 << ctx->mcu_id); | |
314 | } | |
315 | ||
316 | mutex_unlock(&ctx->edac->mc_lock); | |
317 | } | |
318 | ||
319 | static int xgene_edac_mc_is_active(struct xgene_edac_mc_ctx *ctx, int mc_idx) | |
320 | { | |
321 | unsigned int reg; | |
322 | u32 mcu_mask; | |
323 | ||
324 | if (regmap_read(ctx->edac->csw_map, CSW_CSWCR, ®)) | |
325 | return 0; | |
326 | ||
327 | if (reg & CSW_CSWCR_DUALMCB_MASK) { | |
328 | /* | |
329 | * Dual MCB active - Determine if all 4 active or just MCU0 | |
330 | * and MCU2 active | |
331 | */ | |
332 | if (regmap_read(ctx->edac->mcbb_map, MCBADDRMR, ®)) | |
333 | return 0; | |
334 | mcu_mask = (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0xF : 0x5; | |
335 | } else { | |
336 | /* | |
337 | * Single MCB active - Determine if MCU0/MCU1 or just MCU0 | |
338 | * active | |
339 | */ | |
340 | if (regmap_read(ctx->edac->mcba_map, MCBADDRMR, ®)) | |
341 | return 0; | |
342 | mcu_mask = (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0x3 : 0x1; | |
343 | } | |
344 | ||
345 | /* Save active MC mask if hasn't set already */ | |
346 | if (!ctx->edac->mc_active_mask) | |
347 | ctx->edac->mc_active_mask = mcu_mask; | |
348 | ||
349 | return (mcu_mask & (1 << mc_idx)) ? 1 : 0; | |
350 | } | |
351 | ||
352 | static int xgene_edac_mc_add(struct xgene_edac *edac, struct device_node *np) | |
353 | { | |
354 | struct mem_ctl_info *mci; | |
355 | struct edac_mc_layer layers[2]; | |
356 | struct xgene_edac_mc_ctx tmp_ctx; | |
357 | struct xgene_edac_mc_ctx *ctx; | |
358 | struct resource res; | |
359 | int rc; | |
360 | ||
361 | memset(&tmp_ctx, 0, sizeof(tmp_ctx)); | |
362 | tmp_ctx.edac = edac; | |
363 | ||
364 | if (!devres_open_group(edac->dev, xgene_edac_mc_add, GFP_KERNEL)) | |
365 | return -ENOMEM; | |
366 | ||
367 | rc = of_address_to_resource(np, 0, &res); | |
368 | if (rc < 0) { | |
369 | dev_err(edac->dev, "no MCU resource address\n"); | |
370 | goto err_group; | |
371 | } | |
372 | tmp_ctx.mcu_csr = devm_ioremap_resource(edac->dev, &res); | |
373 | if (IS_ERR(tmp_ctx.mcu_csr)) { | |
374 | dev_err(edac->dev, "unable to map MCU resource\n"); | |
375 | rc = PTR_ERR(tmp_ctx.mcu_csr); | |
376 | goto err_group; | |
377 | } | |
378 | ||
379 | /* Ignore non-active MCU */ | |
380 | if (of_property_read_u32(np, "memory-controller", &tmp_ctx.mcu_id)) { | |
381 | dev_err(edac->dev, "no memory-controller property\n"); | |
382 | rc = -ENODEV; | |
383 | goto err_group; | |
384 | } | |
385 | if (!xgene_edac_mc_is_active(&tmp_ctx, tmp_ctx.mcu_id)) { | |
386 | rc = -ENODEV; | |
387 | goto err_group; | |
388 | } | |
389 | ||
390 | layers[0].type = EDAC_MC_LAYER_CHIP_SELECT; | |
391 | layers[0].size = 4; | |
392 | layers[0].is_virt_csrow = true; | |
393 | layers[1].type = EDAC_MC_LAYER_CHANNEL; | |
394 | layers[1].size = 2; | |
395 | layers[1].is_virt_csrow = false; | |
396 | mci = edac_mc_alloc(tmp_ctx.mcu_id, ARRAY_SIZE(layers), layers, | |
397 | sizeof(*ctx)); | |
398 | if (!mci) { | |
399 | rc = -ENOMEM; | |
400 | goto err_group; | |
401 | } | |
402 | ||
403 | ctx = mci->pvt_info; | |
404 | *ctx = tmp_ctx; /* Copy over resource value */ | |
405 | ctx->name = "xgene_edac_mc_err"; | |
406 | ctx->mci = mci; | |
407 | mci->pdev = &mci->dev; | |
408 | mci->ctl_name = ctx->name; | |
409 | mci->dev_name = ctx->name; | |
410 | ||
411 | mci->mtype_cap = MEM_FLAG_RDDR | MEM_FLAG_RDDR2 | MEM_FLAG_RDDR3 | | |
412 | MEM_FLAG_DDR | MEM_FLAG_DDR2 | MEM_FLAG_DDR3; | |
413 | mci->edac_ctl_cap = EDAC_FLAG_SECDED; | |
414 | mci->edac_cap = EDAC_FLAG_SECDED; | |
415 | mci->mod_name = EDAC_MOD_STR; | |
416 | mci->mod_ver = "0.1"; | |
417 | mci->ctl_page_to_phys = NULL; | |
418 | mci->scrub_cap = SCRUB_FLAG_HW_SRC; | |
419 | mci->scrub_mode = SCRUB_HW_SRC; | |
420 | ||
421 | if (edac_op_state == EDAC_OPSTATE_POLL) | |
422 | mci->edac_check = xgene_edac_mc_check; | |
423 | ||
424 | if (edac_mc_add_mc(mci)) { | |
425 | dev_err(edac->dev, "edac_mc_add_mc failed\n"); | |
426 | rc = -EINVAL; | |
427 | goto err_free; | |
428 | } | |
429 | ||
430 | xgene_edac_mc_create_debugfs_node(mci); | |
431 | ||
432 | list_add(&ctx->next, &edac->mcus); | |
433 | ||
434 | xgene_edac_mc_irq_ctl(mci, true); | |
435 | ||
436 | devres_remove_group(edac->dev, xgene_edac_mc_add); | |
437 | ||
438 | dev_info(edac->dev, "X-Gene EDAC MC registered\n"); | |
439 | return 0; | |
440 | ||
441 | err_free: | |
442 | edac_mc_free(mci); | |
443 | err_group: | |
444 | devres_release_group(edac->dev, xgene_edac_mc_add); | |
445 | return rc; | |
446 | } | |
447 | ||
448 | static int xgene_edac_mc_remove(struct xgene_edac_mc_ctx *mcu) | |
449 | { | |
450 | xgene_edac_mc_irq_ctl(mcu->mci, false); | |
451 | edac_mc_del_mc(&mcu->mci->dev); | |
452 | edac_mc_free(mcu->mci); | |
453 | return 0; | |
454 | } | |
455 | ||
456 | /* CPU L1/L2 error CSR */ | |
457 | #define MAX_CPU_PER_PMD 2 | |
458 | #define CPU_CSR_STRIDE 0x00100000 | |
459 | #define CPU_L2C_PAGE 0x000D0000 | |
460 | #define CPU_MEMERR_L2C_PAGE 0x000E0000 | |
461 | #define CPU_MEMERR_CPU_PAGE 0x000F0000 | |
462 | ||
463 | #define MEMERR_CPU_ICFECR_PAGE_OFFSET 0x0000 | |
464 | #define MEMERR_CPU_ICFESR_PAGE_OFFSET 0x0004 | |
465 | #define MEMERR_CPU_ICFESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24) | |
466 | #define MEMERR_CPU_ICFESR_ERRINDEX_RD(src) (((src) & 0x003F0000) >> 16) | |
467 | #define MEMERR_CPU_ICFESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8) | |
468 | #define MEMERR_CPU_ICFESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4) | |
469 | #define MEMERR_CPU_ICFESR_MULTCERR_MASK BIT(2) | |
470 | #define MEMERR_CPU_ICFESR_CERR_MASK BIT(0) | |
471 | #define MEMERR_CPU_LSUESR_PAGE_OFFSET 0x000c | |
472 | #define MEMERR_CPU_LSUESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24) | |
473 | #define MEMERR_CPU_LSUESR_ERRINDEX_RD(src) (((src) & 0x003F0000) >> 16) | |
474 | #define MEMERR_CPU_LSUESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8) | |
475 | #define MEMERR_CPU_LSUESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4) | |
476 | #define MEMERR_CPU_LSUESR_MULTCERR_MASK BIT(2) | |
477 | #define MEMERR_CPU_LSUESR_CERR_MASK BIT(0) | |
478 | #define MEMERR_CPU_LSUECR_PAGE_OFFSET 0x0008 | |
479 | #define MEMERR_CPU_MMUECR_PAGE_OFFSET 0x0010 | |
480 | #define MEMERR_CPU_MMUESR_PAGE_OFFSET 0x0014 | |
481 | #define MEMERR_CPU_MMUESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24) | |
482 | #define MEMERR_CPU_MMUESR_ERRINDEX_RD(src) (((src) & 0x007F0000) >> 16) | |
483 | #define MEMERR_CPU_MMUESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8) | |
484 | #define MEMERR_CPU_MMUESR_ERRREQSTR_LSU_MASK BIT(7) | |
485 | #define MEMERR_CPU_MMUESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4) | |
486 | #define MEMERR_CPU_MMUESR_MULTCERR_MASK BIT(2) | |
487 | #define MEMERR_CPU_MMUESR_CERR_MASK BIT(0) | |
488 | #define MEMERR_CPU_ICFESRA_PAGE_OFFSET 0x0804 | |
489 | #define MEMERR_CPU_LSUESRA_PAGE_OFFSET 0x080c | |
490 | #define MEMERR_CPU_MMUESRA_PAGE_OFFSET 0x0814 | |
491 | ||
492 | #define MEMERR_L2C_L2ECR_PAGE_OFFSET 0x0000 | |
493 | #define MEMERR_L2C_L2ESR_PAGE_OFFSET 0x0004 | |
494 | #define MEMERR_L2C_L2ESR_ERRSYN_RD(src) (((src) & 0xFF000000) >> 24) | |
495 | #define MEMERR_L2C_L2ESR_ERRWAY_RD(src) (((src) & 0x00FC0000) >> 18) | |
496 | #define MEMERR_L2C_L2ESR_ERRCPU_RD(src) (((src) & 0x00020000) >> 17) | |
497 | #define MEMERR_L2C_L2ESR_ERRGROUP_RD(src) (((src) & 0x0000E000) >> 13) | |
498 | #define MEMERR_L2C_L2ESR_ERRACTION_RD(src) (((src) & 0x00001C00) >> 10) | |
499 | #define MEMERR_L2C_L2ESR_ERRTYPE_RD(src) (((src) & 0x00000300) >> 8) | |
500 | #define MEMERR_L2C_L2ESR_MULTUCERR_MASK BIT(3) | |
501 | #define MEMERR_L2C_L2ESR_MULTICERR_MASK BIT(2) | |
502 | #define MEMERR_L2C_L2ESR_UCERR_MASK BIT(1) | |
503 | #define MEMERR_L2C_L2ESR_ERR_MASK BIT(0) | |
504 | #define MEMERR_L2C_L2EALR_PAGE_OFFSET 0x0008 | |
505 | #define CPUX_L2C_L2RTOCR_PAGE_OFFSET 0x0010 | |
506 | #define MEMERR_L2C_L2EAHR_PAGE_OFFSET 0x000c | |
507 | #define CPUX_L2C_L2RTOSR_PAGE_OFFSET 0x0014 | |
508 | #define MEMERR_L2C_L2RTOSR_MULTERR_MASK BIT(1) | |
509 | #define MEMERR_L2C_L2RTOSR_ERR_MASK BIT(0) | |
510 | #define CPUX_L2C_L2RTOALR_PAGE_OFFSET 0x0018 | |
511 | #define CPUX_L2C_L2RTOAHR_PAGE_OFFSET 0x001c | |
512 | #define MEMERR_L2C_L2ESRA_PAGE_OFFSET 0x0804 | |
513 | ||
514 | /* | |
515 | * Processor Module Domain (PMD) context - Context for a pair of processsors. | |
516 | * Each PMD consists of 2 CPUs and a shared L2 cache. Each CPU consists of | |
517 | * its own L1 cache. | |
518 | */ | |
519 | struct xgene_edac_pmd_ctx { | |
520 | struct list_head next; | |
521 | struct device ddev; | |
522 | char *name; | |
523 | struct xgene_edac *edac; | |
524 | struct edac_device_ctl_info *edac_dev; | |
525 | void __iomem *pmd_csr; | |
526 | u32 pmd; | |
451bb7fb | 527 | int version; |
0d442930 LH |
528 | }; |
529 | ||
530 | static void xgene_edac_pmd_l1_check(struct edac_device_ctl_info *edac_dev, | |
531 | int cpu_idx) | |
532 | { | |
533 | struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info; | |
534 | void __iomem *pg_f; | |
535 | u32 val; | |
536 | ||
537 | pg_f = ctx->pmd_csr + cpu_idx * CPU_CSR_STRIDE + CPU_MEMERR_CPU_PAGE; | |
538 | ||
539 | val = readl(pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET); | |
540 | if (val) { | |
541 | dev_err(edac_dev->dev, | |
542 | "CPU%d L1 memory error ICF 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n", | |
543 | ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val, | |
544 | MEMERR_CPU_ICFESR_ERRWAY_RD(val), | |
545 | MEMERR_CPU_ICFESR_ERRINDEX_RD(val), | |
546 | MEMERR_CPU_ICFESR_ERRINFO_RD(val)); | |
547 | if (val & MEMERR_CPU_ICFESR_CERR_MASK) | |
548 | dev_err(edac_dev->dev, | |
549 | "One or more correctable error\n"); | |
550 | if (val & MEMERR_CPU_ICFESR_MULTCERR_MASK) | |
551 | dev_err(edac_dev->dev, "Multiple correctable error\n"); | |
552 | switch (MEMERR_CPU_ICFESR_ERRTYPE_RD(val)) { | |
553 | case 1: | |
554 | dev_err(edac_dev->dev, "L1 TLB multiple hit\n"); | |
555 | break; | |
556 | case 2: | |
557 | dev_err(edac_dev->dev, "Way select multiple hit\n"); | |
558 | break; | |
559 | case 3: | |
560 | dev_err(edac_dev->dev, "Physical tag parity error\n"); | |
561 | break; | |
562 | case 4: | |
563 | case 5: | |
564 | dev_err(edac_dev->dev, "L1 data parity error\n"); | |
565 | break; | |
566 | case 6: | |
567 | dev_err(edac_dev->dev, "L1 pre-decode parity error\n"); | |
568 | break; | |
569 | } | |
570 | ||
571 | /* Clear any HW errors */ | |
572 | writel(val, pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET); | |
573 | ||
574 | if (val & (MEMERR_CPU_ICFESR_CERR_MASK | | |
575 | MEMERR_CPU_ICFESR_MULTCERR_MASK)) | |
576 | edac_device_handle_ce(edac_dev, 0, 0, | |
577 | edac_dev->ctl_name); | |
578 | } | |
579 | ||
580 | val = readl(pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET); | |
581 | if (val) { | |
582 | dev_err(edac_dev->dev, | |
583 | "CPU%d memory error LSU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n", | |
584 | ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val, | |
585 | MEMERR_CPU_LSUESR_ERRWAY_RD(val), | |
586 | MEMERR_CPU_LSUESR_ERRINDEX_RD(val), | |
587 | MEMERR_CPU_LSUESR_ERRINFO_RD(val)); | |
588 | if (val & MEMERR_CPU_LSUESR_CERR_MASK) | |
589 | dev_err(edac_dev->dev, | |
590 | "One or more correctable error\n"); | |
591 | if (val & MEMERR_CPU_LSUESR_MULTCERR_MASK) | |
592 | dev_err(edac_dev->dev, "Multiple correctable error\n"); | |
593 | switch (MEMERR_CPU_LSUESR_ERRTYPE_RD(val)) { | |
594 | case 0: | |
595 | dev_err(edac_dev->dev, "Load tag error\n"); | |
596 | break; | |
597 | case 1: | |
598 | dev_err(edac_dev->dev, "Load data error\n"); | |
599 | break; | |
600 | case 2: | |
601 | dev_err(edac_dev->dev, "WSL multihit error\n"); | |
602 | break; | |
603 | case 3: | |
604 | dev_err(edac_dev->dev, "Store tag error\n"); | |
605 | break; | |
606 | case 4: | |
607 | dev_err(edac_dev->dev, | |
608 | "DTB multihit from load pipeline error\n"); | |
609 | break; | |
610 | case 5: | |
611 | dev_err(edac_dev->dev, | |
612 | "DTB multihit from store pipeline error\n"); | |
613 | break; | |
614 | } | |
615 | ||
616 | /* Clear any HW errors */ | |
617 | writel(val, pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET); | |
618 | ||
619 | if (val & (MEMERR_CPU_LSUESR_CERR_MASK | | |
620 | MEMERR_CPU_LSUESR_MULTCERR_MASK)) | |
621 | edac_device_handle_ce(edac_dev, 0, 0, | |
622 | edac_dev->ctl_name); | |
623 | } | |
624 | ||
625 | val = readl(pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET); | |
626 | if (val) { | |
627 | dev_err(edac_dev->dev, | |
628 | "CPU%d memory error MMU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X %s\n", | |
629 | ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val, | |
630 | MEMERR_CPU_MMUESR_ERRWAY_RD(val), | |
631 | MEMERR_CPU_MMUESR_ERRINDEX_RD(val), | |
632 | MEMERR_CPU_MMUESR_ERRINFO_RD(val), | |
633 | val & MEMERR_CPU_MMUESR_ERRREQSTR_LSU_MASK ? "LSU" : | |
634 | "ICF"); | |
635 | if (val & MEMERR_CPU_MMUESR_CERR_MASK) | |
636 | dev_err(edac_dev->dev, | |
637 | "One or more correctable error\n"); | |
638 | if (val & MEMERR_CPU_MMUESR_MULTCERR_MASK) | |
639 | dev_err(edac_dev->dev, "Multiple correctable error\n"); | |
640 | switch (MEMERR_CPU_MMUESR_ERRTYPE_RD(val)) { | |
641 | case 0: | |
642 | dev_err(edac_dev->dev, "Stage 1 UTB hit error\n"); | |
643 | break; | |
644 | case 1: | |
645 | dev_err(edac_dev->dev, "Stage 1 UTB miss error\n"); | |
646 | break; | |
647 | case 2: | |
648 | dev_err(edac_dev->dev, "Stage 1 UTB allocate error\n"); | |
649 | break; | |
650 | case 3: | |
651 | dev_err(edac_dev->dev, | |
652 | "TMO operation single bank error\n"); | |
653 | break; | |
654 | case 4: | |
655 | dev_err(edac_dev->dev, "Stage 2 UTB error\n"); | |
656 | break; | |
657 | case 5: | |
658 | dev_err(edac_dev->dev, "Stage 2 UTB miss error\n"); | |
659 | break; | |
660 | case 6: | |
661 | dev_err(edac_dev->dev, "Stage 2 UTB allocate error\n"); | |
662 | break; | |
663 | case 7: | |
664 | dev_err(edac_dev->dev, | |
665 | "TMO operation multiple bank error\n"); | |
666 | break; | |
667 | } | |
668 | ||
669 | /* Clear any HW errors */ | |
670 | writel(val, pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET); | |
671 | ||
672 | edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name); | |
673 | } | |
674 | } | |
675 | ||
676 | static void xgene_edac_pmd_l2_check(struct edac_device_ctl_info *edac_dev) | |
677 | { | |
678 | struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info; | |
679 | void __iomem *pg_d; | |
680 | void __iomem *pg_e; | |
681 | u32 val_hi; | |
682 | u32 val_lo; | |
683 | u32 val; | |
684 | ||
685 | /* Check L2 */ | |
686 | pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE; | |
687 | val = readl(pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET); | |
688 | if (val) { | |
689 | val_lo = readl(pg_e + MEMERR_L2C_L2EALR_PAGE_OFFSET); | |
690 | val_hi = readl(pg_e + MEMERR_L2C_L2EAHR_PAGE_OFFSET); | |
691 | dev_err(edac_dev->dev, | |
692 | "PMD%d memory error L2C L2ESR 0x%08X @ 0x%08X.%08X\n", | |
693 | ctx->pmd, val, val_hi, val_lo); | |
694 | dev_err(edac_dev->dev, | |
695 | "ErrSyndrome 0x%02X ErrWay 0x%02X ErrCpu %d ErrGroup 0x%02X ErrAction 0x%02X\n", | |
696 | MEMERR_L2C_L2ESR_ERRSYN_RD(val), | |
697 | MEMERR_L2C_L2ESR_ERRWAY_RD(val), | |
698 | MEMERR_L2C_L2ESR_ERRCPU_RD(val), | |
699 | MEMERR_L2C_L2ESR_ERRGROUP_RD(val), | |
700 | MEMERR_L2C_L2ESR_ERRACTION_RD(val)); | |
701 | ||
702 | if (val & MEMERR_L2C_L2ESR_ERR_MASK) | |
703 | dev_err(edac_dev->dev, | |
704 | "One or more correctable error\n"); | |
705 | if (val & MEMERR_L2C_L2ESR_MULTICERR_MASK) | |
706 | dev_err(edac_dev->dev, "Multiple correctable error\n"); | |
707 | if (val & MEMERR_L2C_L2ESR_UCERR_MASK) | |
708 | dev_err(edac_dev->dev, | |
709 | "One or more uncorrectable error\n"); | |
710 | if (val & MEMERR_L2C_L2ESR_MULTUCERR_MASK) | |
711 | dev_err(edac_dev->dev, | |
712 | "Multiple uncorrectable error\n"); | |
713 | ||
714 | switch (MEMERR_L2C_L2ESR_ERRTYPE_RD(val)) { | |
715 | case 0: | |
716 | dev_err(edac_dev->dev, "Outbound SDB parity error\n"); | |
717 | break; | |
718 | case 1: | |
719 | dev_err(edac_dev->dev, "Inbound SDB parity error\n"); | |
720 | break; | |
721 | case 2: | |
722 | dev_err(edac_dev->dev, "Tag ECC error\n"); | |
723 | break; | |
724 | case 3: | |
725 | dev_err(edac_dev->dev, "Data ECC error\n"); | |
726 | break; | |
727 | } | |
728 | ||
729 | /* Clear any HW errors */ | |
730 | writel(val, pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET); | |
731 | ||
732 | if (val & (MEMERR_L2C_L2ESR_ERR_MASK | | |
733 | MEMERR_L2C_L2ESR_MULTICERR_MASK)) | |
734 | edac_device_handle_ce(edac_dev, 0, 0, | |
735 | edac_dev->ctl_name); | |
736 | if (val & (MEMERR_L2C_L2ESR_UCERR_MASK | | |
737 | MEMERR_L2C_L2ESR_MULTUCERR_MASK)) | |
738 | edac_device_handle_ue(edac_dev, 0, 0, | |
739 | edac_dev->ctl_name); | |
740 | } | |
741 | ||
742 | /* Check if any memory request timed out on L2 cache */ | |
743 | pg_d = ctx->pmd_csr + CPU_L2C_PAGE; | |
744 | val = readl(pg_d + CPUX_L2C_L2RTOSR_PAGE_OFFSET); | |
745 | if (val) { | |
746 | val_lo = readl(pg_d + CPUX_L2C_L2RTOALR_PAGE_OFFSET); | |
747 | val_hi = readl(pg_d + CPUX_L2C_L2RTOAHR_PAGE_OFFSET); | |
748 | dev_err(edac_dev->dev, | |
749 | "PMD%d L2C error L2C RTOSR 0x%08X @ 0x%08X.%08X\n", | |
750 | ctx->pmd, val, val_hi, val_lo); | |
751 | writel(val, pg_d + CPUX_L2C_L2RTOSR_PAGE_OFFSET); | |
752 | } | |
753 | } | |
754 | ||
755 | static void xgene_edac_pmd_check(struct edac_device_ctl_info *edac_dev) | |
756 | { | |
757 | struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info; | |
758 | unsigned int pcp_hp_stat; | |
759 | int i; | |
760 | ||
761 | xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat); | |
762 | if (!((PMD0_MERR_MASK << ctx->pmd) & pcp_hp_stat)) | |
763 | return; | |
764 | ||
765 | /* Check CPU L1 error */ | |
766 | for (i = 0; i < MAX_CPU_PER_PMD; i++) | |
767 | xgene_edac_pmd_l1_check(edac_dev, i); | |
768 | ||
769 | /* Check CPU L2 error */ | |
770 | xgene_edac_pmd_l2_check(edac_dev); | |
771 | } | |
772 | ||
773 | static void xgene_edac_pmd_cpu_hw_cfg(struct edac_device_ctl_info *edac_dev, | |
774 | int cpu) | |
775 | { | |
776 | struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info; | |
777 | void __iomem *pg_f = ctx->pmd_csr + cpu * CPU_CSR_STRIDE + | |
778 | CPU_MEMERR_CPU_PAGE; | |
779 | ||
780 | /* | |
781 | * Enable CPU memory error: | |
782 | * MEMERR_CPU_ICFESRA, MEMERR_CPU_LSUESRA, and MEMERR_CPU_MMUESRA | |
783 | */ | |
784 | writel(0x00000301, pg_f + MEMERR_CPU_ICFECR_PAGE_OFFSET); | |
785 | writel(0x00000301, pg_f + MEMERR_CPU_LSUECR_PAGE_OFFSET); | |
786 | writel(0x00000101, pg_f + MEMERR_CPU_MMUECR_PAGE_OFFSET); | |
787 | } | |
788 | ||
0d442930 LH |
789 | static void xgene_edac_pmd_hw_cfg(struct edac_device_ctl_info *edac_dev) |
790 | { | |
791 | struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info; | |
792 | void __iomem *pg_d = ctx->pmd_csr + CPU_L2C_PAGE; | |
793 | void __iomem *pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE; | |
794 | ||
795 | /* Enable PMD memory error - MEMERR_L2C_L2ECR and L2C_L2RTOCR */ | |
796 | writel(0x00000703, pg_e + MEMERR_L2C_L2ECR_PAGE_OFFSET); | |
797 | /* Configure L2C HW request time out feature if supported */ | |
451bb7fb | 798 | if (ctx->version > 1) |
0d442930 LH |
799 | writel(0x00000119, pg_d + CPUX_L2C_L2RTOCR_PAGE_OFFSET); |
800 | } | |
801 | ||
802 | static void xgene_edac_pmd_hw_ctl(struct edac_device_ctl_info *edac_dev, | |
803 | bool enable) | |
804 | { | |
805 | struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info; | |
806 | int i; | |
807 | ||
808 | /* Enable PMD error interrupt */ | |
809 | if (edac_dev->op_state == OP_RUNNING_INTERRUPT) { | |
810 | if (enable) | |
811 | xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK, | |
812 | PMD0_MERR_MASK << ctx->pmd); | |
813 | else | |
814 | xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK, | |
815 | PMD0_MERR_MASK << ctx->pmd); | |
816 | } | |
817 | ||
818 | if (enable) { | |
819 | xgene_edac_pmd_hw_cfg(edac_dev); | |
820 | ||
821 | /* Two CPUs per a PMD */ | |
822 | for (i = 0; i < MAX_CPU_PER_PMD; i++) | |
823 | xgene_edac_pmd_cpu_hw_cfg(edac_dev, i); | |
824 | } | |
825 | } | |
826 | ||
827 | static ssize_t xgene_edac_pmd_l1_inject_ctrl_write(struct file *file, | |
828 | const char __user *data, | |
829 | size_t count, loff_t *ppos) | |
830 | { | |
831 | struct edac_device_ctl_info *edac_dev = file->private_data; | |
832 | struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info; | |
833 | void __iomem *cpux_pg_f; | |
834 | int i; | |
835 | ||
836 | for (i = 0; i < MAX_CPU_PER_PMD; i++) { | |
837 | cpux_pg_f = ctx->pmd_csr + i * CPU_CSR_STRIDE + | |
838 | CPU_MEMERR_CPU_PAGE; | |
839 | ||
840 | writel(MEMERR_CPU_ICFESR_MULTCERR_MASK | | |
841 | MEMERR_CPU_ICFESR_CERR_MASK, | |
842 | cpux_pg_f + MEMERR_CPU_ICFESRA_PAGE_OFFSET); | |
843 | writel(MEMERR_CPU_LSUESR_MULTCERR_MASK | | |
844 | MEMERR_CPU_LSUESR_CERR_MASK, | |
845 | cpux_pg_f + MEMERR_CPU_LSUESRA_PAGE_OFFSET); | |
846 | writel(MEMERR_CPU_MMUESR_MULTCERR_MASK | | |
847 | MEMERR_CPU_MMUESR_CERR_MASK, | |
848 | cpux_pg_f + MEMERR_CPU_MMUESRA_PAGE_OFFSET); | |
849 | } | |
850 | return count; | |
851 | } | |
852 | ||
853 | static ssize_t xgene_edac_pmd_l2_inject_ctrl_write(struct file *file, | |
854 | const char __user *data, | |
855 | size_t count, loff_t *ppos) | |
856 | { | |
857 | struct edac_device_ctl_info *edac_dev = file->private_data; | |
858 | struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info; | |
859 | void __iomem *pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE; | |
860 | ||
861 | writel(MEMERR_L2C_L2ESR_MULTUCERR_MASK | | |
862 | MEMERR_L2C_L2ESR_MULTICERR_MASK | | |
863 | MEMERR_L2C_L2ESR_UCERR_MASK | | |
864 | MEMERR_L2C_L2ESR_ERR_MASK, | |
865 | pg_e + MEMERR_L2C_L2ESRA_PAGE_OFFSET); | |
866 | return count; | |
867 | } | |
868 | ||
869 | static const struct file_operations xgene_edac_pmd_debug_inject_fops[] = { | |
870 | { | |
871 | .open = simple_open, | |
872 | .write = xgene_edac_pmd_l1_inject_ctrl_write, | |
873 | .llseek = generic_file_llseek, }, | |
874 | { | |
875 | .open = simple_open, | |
876 | .write = xgene_edac_pmd_l2_inject_ctrl_write, | |
877 | .llseek = generic_file_llseek, }, | |
878 | { } | |
879 | }; | |
880 | ||
881 | static void xgene_edac_pmd_create_debugfs_nodes( | |
882 | struct edac_device_ctl_info *edac_dev) | |
883 | { | |
884 | struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info; | |
09bd1b4f | 885 | struct dentry *dbgfs_dir; |
0d442930 LH |
886 | char name[30]; |
887 | ||
888 | if (!IS_ENABLED(CONFIG_EDAC_DEBUG)) | |
889 | return; | |
890 | ||
891 | /* | |
892 | * Todo: Switch to common EDAC debug file system for edac device | |
893 | * when available. | |
894 | */ | |
895 | if (!ctx->edac->dfs) { | |
09bd1b4f | 896 | ctx->edac->dfs = edac_debugfs_create_dir(edac_dev->dev->kobj.name); |
0d442930 LH |
897 | if (!ctx->edac->dfs) |
898 | return; | |
899 | } | |
900 | sprintf(name, "PMD%d", ctx->pmd); | |
09bd1b4f BP |
901 | dbgfs_dir = edac_debugfs_create_dir_at(name, ctx->edac->dfs); |
902 | if (!dbgfs_dir) | |
0d442930 LH |
903 | return; |
904 | ||
09bd1b4f BP |
905 | edac_debugfs_create_file("l1_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev, |
906 | &xgene_edac_pmd_debug_inject_fops[0]); | |
907 | edac_debugfs_create_file("l2_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev, | |
908 | &xgene_edac_pmd_debug_inject_fops[1]); | |
0d442930 LH |
909 | } |
910 | ||
911 | static int xgene_edac_pmd_available(u32 efuse, int pmd) | |
912 | { | |
913 | return (efuse & (1 << pmd)) ? 0 : 1; | |
914 | } | |
915 | ||
451bb7fb AB |
916 | static int xgene_edac_pmd_add(struct xgene_edac *edac, struct device_node *np, |
917 | int version) | |
0d442930 LH |
918 | { |
919 | struct edac_device_ctl_info *edac_dev; | |
920 | struct xgene_edac_pmd_ctx *ctx; | |
921 | struct resource res; | |
922 | char edac_name[10]; | |
923 | u32 pmd; | |
924 | int rc; | |
925 | u32 val; | |
926 | ||
927 | if (!devres_open_group(edac->dev, xgene_edac_pmd_add, GFP_KERNEL)) | |
928 | return -ENOMEM; | |
929 | ||
930 | /* Determine if this PMD is disabled */ | |
931 | if (of_property_read_u32(np, "pmd-controller", &pmd)) { | |
932 | dev_err(edac->dev, "no pmd-controller property\n"); | |
933 | rc = -ENODEV; | |
934 | goto err_group; | |
935 | } | |
936 | rc = regmap_read(edac->efuse_map, 0, &val); | |
937 | if (rc) | |
938 | goto err_group; | |
939 | if (!xgene_edac_pmd_available(val, pmd)) { | |
940 | rc = -ENODEV; | |
941 | goto err_group; | |
942 | } | |
943 | ||
944 | sprintf(edac_name, "l2c%d", pmd); | |
945 | edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx), | |
946 | edac_name, 1, "l2c", 1, 2, NULL, | |
947 | 0, edac_device_alloc_index()); | |
948 | if (!edac_dev) { | |
949 | rc = -ENOMEM; | |
950 | goto err_group; | |
951 | } | |
952 | ||
953 | ctx = edac_dev->pvt_info; | |
954 | ctx->name = "xgene_pmd_err"; | |
955 | ctx->pmd = pmd; | |
956 | ctx->edac = edac; | |
957 | ctx->edac_dev = edac_dev; | |
958 | ctx->ddev = *edac->dev; | |
451bb7fb | 959 | ctx->version = version; |
0d442930 LH |
960 | edac_dev->dev = &ctx->ddev; |
961 | edac_dev->ctl_name = ctx->name; | |
962 | edac_dev->dev_name = ctx->name; | |
963 | edac_dev->mod_name = EDAC_MOD_STR; | |
964 | ||
965 | rc = of_address_to_resource(np, 0, &res); | |
966 | if (rc < 0) { | |
967 | dev_err(edac->dev, "no PMD resource address\n"); | |
968 | goto err_free; | |
969 | } | |
970 | ctx->pmd_csr = devm_ioremap_resource(edac->dev, &res); | |
971 | if (IS_ERR(ctx->pmd_csr)) { | |
972 | dev_err(edac->dev, | |
973 | "devm_ioremap_resource failed for PMD resource address\n"); | |
974 | rc = PTR_ERR(ctx->pmd_csr); | |
975 | goto err_free; | |
976 | } | |
977 | ||
978 | if (edac_op_state == EDAC_OPSTATE_POLL) | |
979 | edac_dev->edac_check = xgene_edac_pmd_check; | |
980 | ||
981 | xgene_edac_pmd_create_debugfs_nodes(edac_dev); | |
982 | ||
983 | rc = edac_device_add_device(edac_dev); | |
984 | if (rc > 0) { | |
985 | dev_err(edac->dev, "edac_device_add_device failed\n"); | |
986 | rc = -ENOMEM; | |
987 | goto err_free; | |
988 | } | |
989 | ||
990 | if (edac_op_state == EDAC_OPSTATE_INT) | |
991 | edac_dev->op_state = OP_RUNNING_INTERRUPT; | |
992 | ||
993 | list_add(&ctx->next, &edac->pmds); | |
994 | ||
995 | xgene_edac_pmd_hw_ctl(edac_dev, 1); | |
996 | ||
997 | devres_remove_group(edac->dev, xgene_edac_pmd_add); | |
998 | ||
999 | dev_info(edac->dev, "X-Gene EDAC PMD%d registered\n", ctx->pmd); | |
1000 | return 0; | |
1001 | ||
1002 | err_free: | |
1003 | edac_device_free_ctl_info(edac_dev); | |
1004 | err_group: | |
1005 | devres_release_group(edac->dev, xgene_edac_pmd_add); | |
1006 | return rc; | |
1007 | } | |
1008 | ||
1009 | static int xgene_edac_pmd_remove(struct xgene_edac_pmd_ctx *pmd) | |
1010 | { | |
1011 | struct edac_device_ctl_info *edac_dev = pmd->edac_dev; | |
1012 | ||
1013 | xgene_edac_pmd_hw_ctl(edac_dev, 0); | |
1014 | edac_device_del_device(edac_dev->dev); | |
1015 | edac_device_free_ctl_info(edac_dev); | |
1016 | return 0; | |
1017 | } | |
1018 | ||
1019 | static irqreturn_t xgene_edac_isr(int irq, void *dev_id) | |
1020 | { | |
1021 | struct xgene_edac *ctx = dev_id; | |
1022 | struct xgene_edac_pmd_ctx *pmd; | |
1023 | unsigned int pcp_hp_stat; | |
1024 | unsigned int pcp_lp_stat; | |
1025 | ||
1026 | xgene_edac_pcp_rd(ctx, PCPHPERRINTSTS, &pcp_hp_stat); | |
1027 | xgene_edac_pcp_rd(ctx, PCPLPERRINTSTS, &pcp_lp_stat); | |
1028 | if ((MCU_UNCORR_ERR_MASK & pcp_hp_stat) || | |
1029 | (MCU_CTL_ERR_MASK & pcp_hp_stat) || | |
1030 | (MCU_CORR_ERR_MASK & pcp_lp_stat)) { | |
1031 | struct xgene_edac_mc_ctx *mcu; | |
1032 | ||
1033 | list_for_each_entry(mcu, &ctx->mcus, next) { | |
1034 | xgene_edac_mc_check(mcu->mci); | |
1035 | } | |
1036 | } | |
1037 | ||
1038 | list_for_each_entry(pmd, &ctx->pmds, next) { | |
1039 | if ((PMD0_MERR_MASK << pmd->pmd) & pcp_hp_stat) | |
1040 | xgene_edac_pmd_check(pmd->edac_dev); | |
1041 | } | |
1042 | ||
1043 | return IRQ_HANDLED; | |
1044 | } | |
1045 | ||
1046 | static int xgene_edac_probe(struct platform_device *pdev) | |
1047 | { | |
1048 | struct xgene_edac *edac; | |
1049 | struct device_node *child; | |
1050 | struct resource *res; | |
1051 | int rc; | |
1052 | ||
1053 | edac = devm_kzalloc(&pdev->dev, sizeof(*edac), GFP_KERNEL); | |
1054 | if (!edac) | |
1055 | return -ENOMEM; | |
1056 | ||
1057 | edac->dev = &pdev->dev; | |
1058 | platform_set_drvdata(pdev, edac); | |
1059 | INIT_LIST_HEAD(&edac->mcus); | |
1060 | INIT_LIST_HEAD(&edac->pmds); | |
1061 | spin_lock_init(&edac->lock); | |
1062 | mutex_init(&edac->mc_lock); | |
1063 | ||
1064 | edac->csw_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, | |
1065 | "regmap-csw"); | |
1066 | if (IS_ERR(edac->csw_map)) { | |
1067 | dev_err(edac->dev, "unable to get syscon regmap csw\n"); | |
1068 | rc = PTR_ERR(edac->csw_map); | |
1069 | goto out_err; | |
1070 | } | |
1071 | ||
1072 | edac->mcba_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, | |
1073 | "regmap-mcba"); | |
1074 | if (IS_ERR(edac->mcba_map)) { | |
1075 | dev_err(edac->dev, "unable to get syscon regmap mcba\n"); | |
1076 | rc = PTR_ERR(edac->mcba_map); | |
1077 | goto out_err; | |
1078 | } | |
1079 | ||
1080 | edac->mcbb_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, | |
1081 | "regmap-mcbb"); | |
1082 | if (IS_ERR(edac->mcbb_map)) { | |
1083 | dev_err(edac->dev, "unable to get syscon regmap mcbb\n"); | |
1084 | rc = PTR_ERR(edac->mcbb_map); | |
1085 | goto out_err; | |
1086 | } | |
1087 | edac->efuse_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, | |
1088 | "regmap-efuse"); | |
1089 | if (IS_ERR(edac->efuse_map)) { | |
1090 | dev_err(edac->dev, "unable to get syscon regmap efuse\n"); | |
1091 | rc = PTR_ERR(edac->efuse_map); | |
1092 | goto out_err; | |
1093 | } | |
1094 | ||
1095 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1096 | edac->pcp_csr = devm_ioremap_resource(&pdev->dev, res); | |
1097 | if (IS_ERR(edac->pcp_csr)) { | |
1098 | dev_err(&pdev->dev, "no PCP resource address\n"); | |
1099 | rc = PTR_ERR(edac->pcp_csr); | |
1100 | goto out_err; | |
1101 | } | |
1102 | ||
1103 | if (edac_op_state == EDAC_OPSTATE_INT) { | |
1104 | int irq; | |
1105 | int i; | |
1106 | ||
1107 | for (i = 0; i < 3; i++) { | |
1108 | irq = platform_get_irq(pdev, i); | |
1109 | if (irq < 0) { | |
1110 | dev_err(&pdev->dev, "No IRQ resource\n"); | |
1111 | rc = -EINVAL; | |
1112 | goto out_err; | |
1113 | } | |
1114 | rc = devm_request_irq(&pdev->dev, irq, | |
1115 | xgene_edac_isr, IRQF_SHARED, | |
1116 | dev_name(&pdev->dev), edac); | |
1117 | if (rc) { | |
1118 | dev_err(&pdev->dev, | |
1119 | "Could not request IRQ %d\n", irq); | |
1120 | goto out_err; | |
1121 | } | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | for_each_child_of_node(pdev->dev.of_node, child) { | |
1126 | if (!of_device_is_available(child)) | |
1127 | continue; | |
1128 | if (of_device_is_compatible(child, "apm,xgene-edac-mc")) | |
1129 | xgene_edac_mc_add(edac, child); | |
1130 | if (of_device_is_compatible(child, "apm,xgene-edac-pmd")) | |
451bb7fb AB |
1131 | xgene_edac_pmd_add(edac, child, 1); |
1132 | if (of_device_is_compatible(child, "apm,xgene-edac-pmd-v2")) | |
1133 | xgene_edac_pmd_add(edac, child, 2); | |
0d442930 LH |
1134 | } |
1135 | ||
1136 | return 0; | |
1137 | ||
1138 | out_err: | |
1139 | return rc; | |
1140 | } | |
1141 | ||
1142 | static int xgene_edac_remove(struct platform_device *pdev) | |
1143 | { | |
1144 | struct xgene_edac *edac = dev_get_drvdata(&pdev->dev); | |
1145 | struct xgene_edac_mc_ctx *mcu; | |
1146 | struct xgene_edac_mc_ctx *temp_mcu; | |
1147 | struct xgene_edac_pmd_ctx *pmd; | |
1148 | struct xgene_edac_pmd_ctx *temp_pmd; | |
1149 | ||
1150 | list_for_each_entry_safe(mcu, temp_mcu, &edac->mcus, next) { | |
1151 | xgene_edac_mc_remove(mcu); | |
1152 | } | |
1153 | ||
1154 | list_for_each_entry_safe(pmd, temp_pmd, &edac->pmds, next) { | |
1155 | xgene_edac_pmd_remove(pmd); | |
1156 | } | |
1157 | return 0; | |
1158 | } | |
1159 | ||
1160 | static const struct of_device_id xgene_edac_of_match[] = { | |
1161 | { .compatible = "apm,xgene-edac" }, | |
1162 | {}, | |
1163 | }; | |
1164 | MODULE_DEVICE_TABLE(of, xgene_edac_of_match); | |
1165 | ||
1166 | static struct platform_driver xgene_edac_driver = { | |
1167 | .probe = xgene_edac_probe, | |
1168 | .remove = xgene_edac_remove, | |
1169 | .driver = { | |
1170 | .name = "xgene-edac", | |
0d442930 LH |
1171 | .of_match_table = xgene_edac_of_match, |
1172 | }, | |
1173 | }; | |
1174 | ||
1175 | static int __init xgene_edac_init(void) | |
1176 | { | |
1177 | int rc; | |
1178 | ||
1179 | /* Make sure error reporting method is sane */ | |
1180 | switch (edac_op_state) { | |
1181 | case EDAC_OPSTATE_POLL: | |
1182 | case EDAC_OPSTATE_INT: | |
1183 | break; | |
1184 | default: | |
1185 | edac_op_state = EDAC_OPSTATE_INT; | |
1186 | break; | |
1187 | } | |
1188 | ||
1189 | rc = platform_driver_register(&xgene_edac_driver); | |
1190 | if (rc) { | |
1191 | edac_printk(KERN_ERR, EDAC_MOD_STR, | |
1192 | "EDAC fails to register\n"); | |
1193 | goto reg_failed; | |
1194 | } | |
1195 | ||
1196 | return 0; | |
1197 | ||
1198 | reg_failed: | |
1199 | return rc; | |
1200 | } | |
1201 | module_init(xgene_edac_init); | |
1202 | ||
1203 | static void __exit xgene_edac_exit(void) | |
1204 | { | |
1205 | platform_driver_unregister(&xgene_edac_driver); | |
1206 | } | |
1207 | module_exit(xgene_edac_exit); | |
1208 | ||
1209 | MODULE_LICENSE("GPL"); | |
1210 | MODULE_AUTHOR("Feng Kan <fkan@apm.com>"); | |
1211 | MODULE_DESCRIPTION("APM X-Gene EDAC driver"); | |
1212 | module_param(edac_op_state, int, 0444); | |
1213 | MODULE_PARM_DESC(edac_op_state, | |
1214 | "EDAC error reporting state: 0=Poll, 2=Interrupt"); |