Kyle Yan | 7a59b36 | 2017-04-11 19:56:45 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved. |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/edac.h> |
| 15 | #include <linux/of_device.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | #include <linux/smp.h> |
| 18 | #include <linux/cpu.h> |
Kyle Yan | 73fd170 | 2017-07-18 15:35:13 -0700 | [diff] [blame] | 19 | #include <linux/cpu_pm.h> |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 20 | #include <linux/interrupt.h> |
| 21 | #include <linux/of_irq.h> |
| 22 | |
| 23 | #include <asm/cputype.h> |
| 24 | |
| 25 | #include "edac_core.h" |
| 26 | |
| 27 | #ifdef CONFIG_EDAC_KRYO3XX_ARM64_POLL |
| 28 | static int poll_msec = 1000; |
| 29 | module_param(poll_msec, int, 0444); |
| 30 | #endif |
| 31 | |
| 32 | #ifdef CONFIG_EDAC_KRYO3XX_ARM64_PANIC_ON_CE |
| 33 | #define ARM64_ERP_PANIC_ON_CE 1 |
| 34 | #else |
| 35 | #define ARM64_ERP_PANIC_ON_CE 0 |
| 36 | #endif |
| 37 | |
| 38 | #ifdef CONFIG_EDAC_KRYO3XX_ARM64_PANIC_ON_UE |
| 39 | #define ARM64_ERP_PANIC_ON_UE 1 |
| 40 | #else |
| 41 | #define ARM64_ERP_PANIC_ON_UE 0 |
| 42 | #endif |
| 43 | |
| 44 | #define L1 0x0 |
| 45 | #define L2 0x1 |
| 46 | #define L3 0x2 |
| 47 | |
| 48 | #define EDAC_CPU "kryo3xx_edac" |
| 49 | |
| 50 | #define KRYO3XX_ERRXSTATUS_VALID(a) ((a >> 30) & 0x1) |
| 51 | #define KRYO3XX_ERRXSTATUS_UE(a) ((a >> 29) & 0x1) |
| 52 | #define KRYO3XX_ERRXSTATUS_SERR(a) (a & 0xFF) |
| 53 | |
| 54 | #define KRYO3XX_ERRXMISC_LVL(a) ((a >> 1) & 0x7) |
| 55 | #define KRYO3XX_ERRXMISC_WAY(a) ((a >> 28) & 0xF) |
| 56 | |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 57 | static inline void set_errxctlr_el1(void) |
| 58 | { |
Kyle Yan | e128077 | 2016-10-10 18:32:45 -0700 | [diff] [blame] | 59 | u64 val = 0x10f; |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 60 | |
| 61 | asm volatile("msr s3_0_c5_c4_1, %0" : : "r" (val)); |
| 62 | } |
| 63 | |
Kyle Yan | 7a59b36 | 2017-04-11 19:56:45 -0700 | [diff] [blame] | 64 | static inline void set_errxmisc_overflow(void) |
| 65 | { |
Kyle Yan | 51096c408 | 2017-06-19 17:25:05 -0700 | [diff] [blame] | 66 | u64 val = 0x7F7F00000000ULL; |
Kyle Yan | 7a59b36 | 2017-04-11 19:56:45 -0700 | [diff] [blame] | 67 | |
| 68 | asm volatile("msr s3_0_c5_c5_0, %0" : : "r" (val)); |
| 69 | } |
| 70 | |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 71 | static inline void write_errselr_el1(u64 val) |
| 72 | { |
| 73 | asm volatile("msr s3_0_c5_c3_1, %0" : : "r" (val)); |
| 74 | } |
| 75 | |
| 76 | static inline u64 read_errxstatus_el1(void) |
| 77 | { |
| 78 | u64 val; |
| 79 | |
| 80 | asm volatile("mrs %0, s3_0_c5_c4_2" : "=r" (val)); |
| 81 | return val; |
| 82 | } |
| 83 | |
| 84 | static inline u64 read_errxmisc_el1(void) |
| 85 | { |
| 86 | u64 val; |
| 87 | |
| 88 | asm volatile("mrs %0, s3_0_c5_c5_0" : "=r" (val)); |
| 89 | return val; |
| 90 | } |
| 91 | |
| 92 | static inline void clear_errxstatus_valid(u64 val) |
| 93 | { |
Kyle Yan | fb73616 | 2016-10-05 17:28:20 -0700 | [diff] [blame] | 94 | asm volatile("msr s3_0_c5_c4_2, %0" : : "r" (val)); |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 95 | } |
| 96 | |
| 97 | struct errors_edac { |
| 98 | const char * const msg; |
| 99 | void (*func)(struct edac_device_ctl_info *edac_dev, |
| 100 | int inst_nr, int block_nr, const char *msg); |
| 101 | }; |
| 102 | |
| 103 | static const struct errors_edac errors[] = { |
| 104 | {"Kryo3xx L1 Correctable Error", edac_device_handle_ce }, |
| 105 | {"Kryo3xx L1 Uncorrectable Error", edac_device_handle_ue }, |
| 106 | {"Kryo3xx L2 Correctable Error", edac_device_handle_ce }, |
| 107 | {"Kryo3xx L2 Uncorrectable Error", edac_device_handle_ue }, |
| 108 | {"L3 Correctable Error", edac_device_handle_ce }, |
| 109 | {"L3 Uncorrectable Error", edac_device_handle_ue }, |
| 110 | }; |
| 111 | |
| 112 | #define KRYO3XX_L1_CE 0 |
| 113 | #define KRYO3XX_L1_UE 1 |
| 114 | #define KRYO3XX_L2_CE 2 |
| 115 | #define KRYO3XX_L2_UE 3 |
| 116 | #define KRYO3XX_L3_CE 4 |
| 117 | #define KRYO3XX_L3_UE 5 |
| 118 | |
| 119 | #define DATA_BUF_ERR 0x2 |
| 120 | #define CACHE_DATA_ERR 0x6 |
| 121 | #define CACHE_TAG_DIRTY_ERR 0x7 |
Kyle Yan | 51096c408 | 2017-06-19 17:25:05 -0700 | [diff] [blame] | 122 | #define TLB_PARITY_ERR_DATA 0x8 |
| 123 | #define TLB_PARITY_ERR_TAG 0x9 |
| 124 | #define BUS_ERROR 0x12 |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 125 | |
| 126 | struct erp_drvdata { |
| 127 | struct edac_device_ctl_info *edev_ctl; |
Kyle Yan | e128077 | 2016-10-10 18:32:45 -0700 | [diff] [blame] | 128 | struct erp_drvdata __percpu **erp_cpu_drvdata; |
Kyle Yan | 73fd170 | 2017-07-18 15:35:13 -0700 | [diff] [blame] | 129 | struct notifier_block nb_pm; |
Kyle Yan | e128077 | 2016-10-10 18:32:45 -0700 | [diff] [blame] | 130 | int ppi; |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 131 | }; |
| 132 | |
| 133 | static struct erp_drvdata *panic_handler_drvdata; |
| 134 | |
| 135 | static DEFINE_SPINLOCK(local_handler_lock); |
| 136 | |
Kyle Yan | e128077 | 2016-10-10 18:32:45 -0700 | [diff] [blame] | 137 | static void l1_l2_irq_enable(void *info) |
| 138 | { |
| 139 | int irq = *(int *)info; |
| 140 | |
| 141 | enable_percpu_irq(irq, IRQ_TYPE_LEVEL_HIGH); |
| 142 | } |
| 143 | |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 144 | static int request_erp_irq(struct platform_device *pdev, const char *propname, |
| 145 | const char *desc, irq_handler_t handler, |
| 146 | void *ed, int percpu) |
| 147 | { |
| 148 | int rc; |
| 149 | struct resource *r; |
Kyle Yan | e128077 | 2016-10-10 18:32:45 -0700 | [diff] [blame] | 150 | struct erp_drvdata *drv = ed; |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 151 | |
| 152 | r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, propname); |
| 153 | |
| 154 | if (!r) { |
| 155 | pr_err("ARM64 CPU ERP: Could not find <%s> IRQ property. Proceeding anyway.\n", |
| 156 | propname); |
Kyle Yan | e128077 | 2016-10-10 18:32:45 -0700 | [diff] [blame] | 157 | goto out; |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | if (!percpu) { |
| 161 | rc = devm_request_threaded_irq(&pdev->dev, r->start, NULL, |
| 162 | handler, |
| 163 | IRQF_ONESHOT | IRQF_TRIGGER_HIGH, |
| 164 | desc, |
| 165 | ed); |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 166 | |
Kyle Yan | e128077 | 2016-10-10 18:32:45 -0700 | [diff] [blame] | 167 | if (rc) { |
| 168 | pr_err("ARM64 CPU ERP: Failed to request IRQ %d: %d (%s / %s). Proceeding anyway.\n", |
| 169 | (int) r->start, rc, propname, desc); |
| 170 | goto out; |
| 171 | } |
| 172 | |
| 173 | } else { |
| 174 | drv->erp_cpu_drvdata = alloc_percpu(struct erp_drvdata *); |
| 175 | if (!drv->erp_cpu_drvdata) { |
| 176 | pr_err("Failed to allocate percpu erp data\n"); |
| 177 | goto out; |
| 178 | } |
| 179 | |
| 180 | *raw_cpu_ptr(drv->erp_cpu_drvdata) = drv; |
| 181 | rc = request_percpu_irq(r->start, handler, desc, |
| 182 | drv->erp_cpu_drvdata); |
| 183 | |
| 184 | if (rc) { |
| 185 | pr_err("ARM64 CPU ERP: Failed to request IRQ %d: %d (%s / %s). Proceeding anyway.\n", |
| 186 | (int) r->start, rc, propname, desc); |
| 187 | goto out_free; |
| 188 | } |
| 189 | |
| 190 | drv->ppi = r->start; |
| 191 | on_each_cpu(l1_l2_irq_enable, &(r->start), 1); |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 192 | } |
| 193 | |
| 194 | return 0; |
Kyle Yan | e128077 | 2016-10-10 18:32:45 -0700 | [diff] [blame] | 195 | |
| 196 | out_free: |
| 197 | free_percpu(drv->erp_cpu_drvdata); |
| 198 | drv->erp_cpu_drvdata = NULL; |
| 199 | out: |
| 200 | return -EINVAL; |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 201 | } |
| 202 | |
| 203 | static void dump_err_reg(int errorcode, int level, u64 errxstatus, u64 errxmisc, |
| 204 | struct edac_device_ctl_info *edev_ctl) |
| 205 | { |
| 206 | edac_printk(KERN_CRIT, EDAC_CPU, "ERRXSTATUS_EL1: %llx\n", errxstatus); |
| 207 | edac_printk(KERN_CRIT, EDAC_CPU, "ERRXMISC_EL1: %llx\n", errxmisc); |
| 208 | edac_printk(KERN_CRIT, EDAC_CPU, "Cache level: L%d\n", level + 1); |
| 209 | |
| 210 | switch (KRYO3XX_ERRXSTATUS_SERR(errxstatus)) { |
| 211 | case DATA_BUF_ERR: |
| 212 | edac_printk(KERN_CRIT, EDAC_CPU, "ECC Error from internal data buffer\n"); |
| 213 | break; |
| 214 | |
| 215 | case CACHE_DATA_ERR: |
| 216 | edac_printk(KERN_CRIT, EDAC_CPU, "ECC Error from cache data RAM\n"); |
| 217 | break; |
| 218 | |
| 219 | case CACHE_TAG_DIRTY_ERR: |
| 220 | edac_printk(KERN_CRIT, EDAC_CPU, "ECC Error from cache tag or dirty RAM\n"); |
| 221 | break; |
| 222 | |
Kyle Yan | 51096c408 | 2017-06-19 17:25:05 -0700 | [diff] [blame] | 223 | case TLB_PARITY_ERR_DATA: |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 224 | edac_printk(KERN_CRIT, EDAC_CPU, "Parity error on TLB RAM\n"); |
| 225 | break; |
| 226 | |
Kyle Yan | 51096c408 | 2017-06-19 17:25:05 -0700 | [diff] [blame] | 227 | case TLB_PARITY_ERR_TAG: |
| 228 | edac_printk(KERN_CRIT, EDAC_CPU, "Parity error on TLB DATA\n"); |
| 229 | |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 230 | case BUS_ERROR: |
| 231 | edac_printk(KERN_CRIT, EDAC_CPU, "Bus Error\n"); |
| 232 | break; |
| 233 | } |
| 234 | |
| 235 | if (level == L3) |
| 236 | edac_printk(KERN_CRIT, EDAC_CPU, |
| 237 | "Way: %d\n", (int) KRYO3XX_ERRXMISC_WAY(errxmisc)); |
| 238 | else |
| 239 | edac_printk(KERN_CRIT, EDAC_CPU, |
| 240 | "Way: %d\n", (int) KRYO3XX_ERRXMISC_WAY(errxmisc) >> 2); |
| 241 | errors[errorcode].func(edev_ctl, smp_processor_id(), |
| 242 | level, errors[errorcode].msg); |
| 243 | } |
| 244 | |
| 245 | static void kryo3xx_parse_l1_l2_cache_error(u64 errxstatus, u64 errxmisc, |
| 246 | struct edac_device_ctl_info *edev_ctl) |
| 247 | { |
| 248 | switch (KRYO3XX_ERRXMISC_LVL(errxmisc)) { |
| 249 | case L1: |
| 250 | if (KRYO3XX_ERRXSTATUS_UE(errxstatus)) |
| 251 | dump_err_reg(KRYO3XX_L1_UE, L1, errxstatus, errxmisc, |
| 252 | edev_ctl); |
| 253 | else |
| 254 | dump_err_reg(KRYO3XX_L1_CE, L1, errxstatus, errxmisc, |
| 255 | edev_ctl); |
| 256 | break; |
| 257 | |
| 258 | case L2: |
| 259 | if (KRYO3XX_ERRXSTATUS_UE(errxstatus)) |
| 260 | dump_err_reg(KRYO3XX_L2_UE, L2, errxstatus, errxmisc, |
| 261 | edev_ctl); |
| 262 | else |
| 263 | dump_err_reg(KRYO3XX_L2_CE, L2, errxstatus, errxmisc, |
| 264 | edev_ctl); |
| 265 | break; |
| 266 | } |
| 267 | |
| 268 | } |
| 269 | |
| 270 | static void kryo3xx_check_l1_l2_ecc(void *info) |
| 271 | { |
| 272 | struct edac_device_ctl_info *edev_ctl = info; |
| 273 | u64 errxstatus = 0; |
| 274 | u64 errxmisc = 0; |
| 275 | unsigned long flags; |
| 276 | |
| 277 | spin_lock_irqsave(&local_handler_lock, flags); |
| 278 | write_errselr_el1(0); |
| 279 | errxstatus = read_errxstatus_el1(); |
| 280 | if (KRYO3XX_ERRXSTATUS_VALID(errxstatus)) { |
| 281 | errxmisc = read_errxmisc_el1(); |
| 282 | edac_printk(KERN_CRIT, EDAC_CPU, |
| 283 | "Kryo3xx CPU%d detected a L1/L2 cache error\n", |
| 284 | smp_processor_id()); |
| 285 | |
| 286 | kryo3xx_parse_l1_l2_cache_error(errxstatus, errxmisc, edev_ctl); |
| 287 | clear_errxstatus_valid(errxstatus); |
| 288 | } |
| 289 | spin_unlock_irqrestore(&local_handler_lock, flags); |
| 290 | } |
| 291 | |
Kyle Yan | 51096c408 | 2017-06-19 17:25:05 -0700 | [diff] [blame] | 292 | static bool l3_is_bus_error(u64 errxstatus) |
| 293 | { |
| 294 | if (KRYO3XX_ERRXSTATUS_SERR(errxstatus) == BUS_ERROR) { |
| 295 | edac_printk(KERN_CRIT, EDAC_CPU, "Bus Error\n"); |
| 296 | return true; |
| 297 | } |
| 298 | |
| 299 | return false; |
| 300 | } |
| 301 | |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 302 | static void kryo3xx_check_l3_scu_error(struct edac_device_ctl_info *edev_ctl) |
| 303 | { |
| 304 | u64 errxstatus = 0; |
| 305 | u64 errxmisc = 0; |
| 306 | unsigned long flags; |
| 307 | |
| 308 | spin_lock_irqsave(&local_handler_lock, flags); |
| 309 | write_errselr_el1(1); |
| 310 | errxstatus = read_errxstatus_el1(); |
| 311 | errxmisc = read_errxmisc_el1(); |
| 312 | |
| 313 | if (KRYO3XX_ERRXSTATUS_VALID(errxstatus) && |
| 314 | KRYO3XX_ERRXMISC_LVL(errxmisc) == L3) { |
Kyle Yan | 51096c408 | 2017-06-19 17:25:05 -0700 | [diff] [blame] | 315 | if (l3_is_bus_error(errxstatus)) { |
| 316 | if (edev_ctl->panic_on_ue) |
| 317 | panic("Causing panic due to Bus Error\n"); |
| 318 | return; |
| 319 | } |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 320 | if (KRYO3XX_ERRXSTATUS_UE(errxstatus)) { |
| 321 | edac_printk(KERN_CRIT, EDAC_CPU, "Detected L3 uncorrectable error\n"); |
| 322 | dump_err_reg(KRYO3XX_L3_UE, L3, errxstatus, errxmisc, |
| 323 | edev_ctl); |
| 324 | } else { |
| 325 | edac_printk(KERN_CRIT, EDAC_CPU, "Detected L3 correctable error\n"); |
| 326 | dump_err_reg(KRYO3XX_L3_CE, L3, errxstatus, errxmisc, |
| 327 | edev_ctl); |
| 328 | } |
| 329 | |
| 330 | clear_errxstatus_valid(errxstatus); |
| 331 | } |
| 332 | spin_unlock_irqrestore(&local_handler_lock, flags); |
| 333 | } |
| 334 | |
| 335 | void kryo3xx_poll_cache_errors(struct edac_device_ctl_info *edev_ctl) |
| 336 | { |
| 337 | int cpu; |
| 338 | |
| 339 | if (edev_ctl == NULL) |
| 340 | edev_ctl = panic_handler_drvdata->edev_ctl; |
| 341 | |
| 342 | kryo3xx_check_l3_scu_error(edev_ctl); |
| 343 | for_each_possible_cpu(cpu) |
| 344 | smp_call_function_single(cpu, kryo3xx_check_l1_l2_ecc, |
| 345 | edev_ctl, 0); |
| 346 | } |
| 347 | |
| 348 | static irqreturn_t kryo3xx_l1_l2_handler(int irq, void *drvdata) |
| 349 | { |
Kyle Yan | 7a59b36 | 2017-04-11 19:56:45 -0700 | [diff] [blame] | 350 | kryo3xx_check_l1_l2_ecc(panic_handler_drvdata->edev_ctl); |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 351 | return IRQ_HANDLED; |
| 352 | } |
| 353 | |
| 354 | static irqreturn_t kryo3xx_l3_scu_handler(int irq, void *drvdata) |
| 355 | { |
| 356 | struct erp_drvdata *drv = drvdata; |
| 357 | struct edac_device_ctl_info *edev_ctl = drv->edev_ctl; |
| 358 | |
| 359 | kryo3xx_check_l3_scu_error(edev_ctl); |
| 360 | return IRQ_HANDLED; |
| 361 | } |
| 362 | |
Kyle Yan | cbe97e8 | 2017-11-06 10:36:23 -0800 | [diff] [blame] | 363 | static void initialize_registers(void *info) |
| 364 | { |
| 365 | set_errxctlr_el1(); |
| 366 | set_errxmisc_overflow(); |
| 367 | } |
| 368 | |
| 369 | static void init_regs_on_cpu(bool all_cpus) |
| 370 | { |
| 371 | int cpu; |
| 372 | |
| 373 | write_errselr_el1(0); |
| 374 | if (all_cpus) { |
| 375 | for_each_possible_cpu(cpu) |
| 376 | smp_call_function_single(cpu, initialize_registers, |
| 377 | NULL, 1); |
| 378 | } else |
| 379 | initialize_registers(NULL); |
| 380 | |
| 381 | write_errselr_el1(1); |
| 382 | initialize_registers(NULL); |
| 383 | } |
| 384 | |
Kyle Yan | 73fd170 | 2017-07-18 15:35:13 -0700 | [diff] [blame] | 385 | static int kryo3xx_pmu_cpu_pm_notify(struct notifier_block *self, |
| 386 | unsigned long action, void *v) |
| 387 | { |
| 388 | switch (action) { |
| 389 | case CPU_PM_EXIT: |
Kyle Yan | cbe97e8 | 2017-11-06 10:36:23 -0800 | [diff] [blame] | 390 | init_regs_on_cpu(false); |
Kyle Yan | 73fd170 | 2017-07-18 15:35:13 -0700 | [diff] [blame] | 391 | kryo3xx_check_l3_scu_error(panic_handler_drvdata->edev_ctl); |
| 392 | kryo3xx_check_l1_l2_ecc(panic_handler_drvdata->edev_ctl); |
| 393 | break; |
| 394 | } |
| 395 | |
| 396 | return NOTIFY_OK; |
| 397 | } |
| 398 | |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 399 | static int kryo3xx_cpu_erp_probe(struct platform_device *pdev) |
| 400 | { |
| 401 | struct device *dev = &pdev->dev; |
| 402 | struct erp_drvdata *drv; |
| 403 | int rc = 0; |
| 404 | int fail = 0; |
| 405 | |
Kyle Yan | cbe97e8 | 2017-11-06 10:36:23 -0800 | [diff] [blame] | 406 | init_regs_on_cpu(true); |
Kyle Yan | 7a59b36 | 2017-04-11 19:56:45 -0700 | [diff] [blame] | 407 | |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 408 | drv = devm_kzalloc(dev, sizeof(*drv), GFP_KERNEL); |
| 409 | |
| 410 | if (!drv) |
| 411 | return -ENOMEM; |
| 412 | |
| 413 | drv->edev_ctl = edac_device_alloc_ctl_info(0, "cpu", |
| 414 | num_possible_cpus(), "L", 3, 1, NULL, 0, |
| 415 | edac_device_alloc_index()); |
| 416 | |
| 417 | if (!drv->edev_ctl) |
| 418 | return -ENOMEM; |
| 419 | |
| 420 | #ifdef CONFIG_EDAC_KRYO3XX_ARM64_POLL |
| 421 | drv->edev_ctl->edac_check = kryo3xx_poll_cache_errors; |
| 422 | drv->edev_ctl->poll_msec = poll_msec; |
| 423 | drv->edev_ctl->defer_work = 1; |
| 424 | #endif |
| 425 | |
| 426 | drv->edev_ctl->dev = dev; |
| 427 | drv->edev_ctl->mod_name = dev_name(dev); |
| 428 | drv->edev_ctl->dev_name = dev_name(dev); |
| 429 | drv->edev_ctl->ctl_name = "cache"; |
| 430 | drv->edev_ctl->panic_on_ce = ARM64_ERP_PANIC_ON_CE; |
| 431 | drv->edev_ctl->panic_on_ue = ARM64_ERP_PANIC_ON_UE; |
Kyle Yan | 73fd170 | 2017-07-18 15:35:13 -0700 | [diff] [blame] | 432 | drv->nb_pm.notifier_call = kryo3xx_pmu_cpu_pm_notify; |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 433 | platform_set_drvdata(pdev, drv); |
| 434 | |
| 435 | rc = edac_device_add_device(drv->edev_ctl); |
| 436 | if (rc) |
| 437 | goto out_mem; |
| 438 | |
| 439 | panic_handler_drvdata = drv; |
| 440 | |
| 441 | if (request_erp_irq(pdev, "l1-l2-faultirq", |
| 442 | "KRYO3XX L1-L2 ECC FAULTIRQ", |
| 443 | kryo3xx_l1_l2_handler, drv, 1)) |
| 444 | fail++; |
| 445 | |
| 446 | if (request_erp_irq(pdev, "l3-scu-faultirq", |
| 447 | "KRYO3XX L3-SCU ECC FAULTIRQ", |
| 448 | kryo3xx_l3_scu_handler, drv, 0)) |
| 449 | fail++; |
| 450 | |
| 451 | if (fail == of_irq_count(dev->of_node)) { |
| 452 | pr_err("KRYO3XX ERP: Could not request any IRQs. Giving up.\n"); |
| 453 | rc = -ENODEV; |
| 454 | goto out_dev; |
| 455 | } |
| 456 | |
Kyle Yan | 73fd170 | 2017-07-18 15:35:13 -0700 | [diff] [blame] | 457 | cpu_pm_register_notifier(&(drv->nb_pm)); |
| 458 | |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 459 | return 0; |
| 460 | |
| 461 | out_dev: |
| 462 | edac_device_del_device(dev); |
| 463 | out_mem: |
| 464 | edac_device_free_ctl_info(drv->edev_ctl); |
| 465 | return rc; |
| 466 | } |
| 467 | |
| 468 | static int kryo3xx_cpu_erp_remove(struct platform_device *pdev) |
| 469 | { |
| 470 | struct erp_drvdata *drv = dev_get_drvdata(&pdev->dev); |
| 471 | struct edac_device_ctl_info *edac_ctl = drv->edev_ctl; |
| 472 | |
Kyle Yan | e128077 | 2016-10-10 18:32:45 -0700 | [diff] [blame] | 473 | |
| 474 | if (drv->erp_cpu_drvdata != NULL) { |
| 475 | free_percpu_irq(drv->ppi, drv->erp_cpu_drvdata); |
| 476 | free_percpu(drv->erp_cpu_drvdata); |
| 477 | } |
| 478 | |
Kyle Yan | ddc4424 | 2016-06-20 14:42:14 -0700 | [diff] [blame] | 479 | edac_device_del_device(edac_ctl->dev); |
| 480 | edac_device_free_ctl_info(edac_ctl); |
| 481 | |
| 482 | return 0; |
| 483 | } |
| 484 | |
| 485 | static const struct of_device_id kryo3xx_cpu_erp_match_table[] = { |
| 486 | { .compatible = "arm,arm64-kryo3xx-cpu-erp" }, |
| 487 | { } |
| 488 | }; |
| 489 | |
| 490 | static struct platform_driver kryo3xx_cpu_erp_driver = { |
| 491 | .probe = kryo3xx_cpu_erp_probe, |
| 492 | .remove = kryo3xx_cpu_erp_remove, |
| 493 | .driver = { |
| 494 | .name = "kryo3xx_cpu_cache_erp", |
| 495 | .owner = THIS_MODULE, |
| 496 | .of_match_table = of_match_ptr(kryo3xx_cpu_erp_match_table), |
| 497 | }, |
| 498 | }; |
| 499 | |
| 500 | static int __init kryo3xx_cpu_erp_init(void) |
| 501 | { |
| 502 | return platform_driver_register(&kryo3xx_cpu_erp_driver); |
| 503 | } |
| 504 | module_init(kryo3xx_cpu_erp_init); |
| 505 | |
| 506 | static void __exit kryo3xx_cpu_erp_exit(void) |
| 507 | { |
| 508 | platform_driver_unregister(&kryo3xx_cpu_erp_driver); |
| 509 | } |
| 510 | module_exit(kryo3xx_cpu_erp_exit); |
| 511 | |
| 512 | MODULE_LICENSE("GPL v2"); |
| 513 | MODULE_DESCRIPTION("Kryo3xx EDAC driver"); |