2 * APM X-Gene SoC EDAC (error detection and correction)
4 * Copyright (c) 2015, Applied Micro Circuits Corporation
5 * Author: Feng Kan <fkan@apm.com>
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.
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.
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/>.
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>
28 #include <linux/of_address.h>
29 #include <linux/regmap.h>
31 #include "edac_core.h"
32 #include "edac_module.h"
34 #define EDAC_MOD_STR "xgene_edac"
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
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;
68 struct list_head mcus;
69 struct list_head pmds;
71 struct list_head socs;
75 int mc_registered_mask;
78 static void xgene_edac_pcp_rd(struct xgene_edac *edac, u32 reg, u32 *val)
80 *val = readl(edac->pcp_csr + reg);
83 static void xgene_edac_pcp_clrbits(struct xgene_edac *edac, u32 reg,
88 spin_lock(&edac->lock);
89 val = readl(edac->pcp_csr + reg);
91 writel(val, edac->pcp_csr + reg);
92 spin_unlock(&edac->lock);
95 static void xgene_edac_pcp_setbits(struct xgene_edac *edac, u32 reg,
100 spin_lock(&edac->lock);
101 val = readl(edac->pcp_csr + reg);
103 writel(val, edac->pcp_csr + reg);
104 spin_unlock(&edac->lock);
107 /* Memory controller error CSR */
108 #define MCU_MAX_RANK 8
109 #define MCU_RANK_STRIDE 0x40
111 #define MCUGECR 0x0110
112 #define MCU_GECR_DEMANDUCINTREN_MASK BIT(0)
113 #define MCU_GECR_BACKUCINTREN_MASK BIT(1)
114 #define MCU_GECR_CINTREN_MASK BIT(2)
115 #define MUC_GECR_MCUADDRERREN_MASK BIT(9)
116 #define MCUGESR 0x0114
117 #define MCU_GESR_ADDRNOMATCH_ERR_MASK BIT(7)
118 #define MCU_GESR_ADDRMULTIMATCH_ERR_MASK BIT(6)
119 #define MCU_GESR_PHYP_ERR_MASK BIT(3)
120 #define MCUESRR0 0x0314
121 #define MCU_ESRR_MULTUCERR_MASK BIT(3)
122 #define MCU_ESRR_BACKUCERR_MASK BIT(2)
123 #define MCU_ESRR_DEMANDUCERR_MASK BIT(1)
124 #define MCU_ESRR_CERR_MASK BIT(0)
125 #define MCUESRRA0 0x0318
126 #define MCUEBLRR0 0x031c
127 #define MCU_EBLRR_ERRBANK_RD(src) (((src) & 0x00000007) >> 0)
128 #define MCUERCRR0 0x0320
129 #define MCU_ERCRR_ERRROW_RD(src) (((src) & 0xFFFF0000) >> 16)
130 #define MCU_ERCRR_ERRCOL_RD(src) ((src) & 0x00000FFF)
131 #define MCUSBECNT0 0x0324
132 #define MCU_SBECNT_COUNT(src) ((src) & 0xFFFF)
134 #define CSW_CSWCR 0x0000
135 #define CSW_CSWCR_DUALMCB_MASK BIT(0)
137 #define MCBADDRMR 0x0000
138 #define MCBADDRMR_MCU_INTLV_MODE_MASK BIT(3)
139 #define MCBADDRMR_DUALMCU_MODE_MASK BIT(2)
140 #define MCBADDRMR_MCB_INTLV_MODE_MASK BIT(1)
141 #define MCBADDRMR_ADDRESS_MODE_MASK BIT(0)
143 struct xgene_edac_mc_ctx {
144 struct list_head next;
146 struct mem_ctl_info *mci;
147 struct xgene_edac *edac;
148 void __iomem *mcu_csr;
152 static ssize_t xgene_edac_mc_err_inject_write(struct file *file,
153 const char __user *data,
154 size_t count, loff_t *ppos)
156 struct mem_ctl_info *mci = file->private_data;
157 struct xgene_edac_mc_ctx *ctx = mci->pvt_info;
160 for (i = 0; i < MCU_MAX_RANK; i++) {
161 writel(MCU_ESRR_MULTUCERR_MASK | MCU_ESRR_BACKUCERR_MASK |
162 MCU_ESRR_DEMANDUCERR_MASK | MCU_ESRR_CERR_MASK,
163 ctx->mcu_csr + MCUESRRA0 + i * MCU_RANK_STRIDE);
168 static const struct file_operations xgene_edac_mc_debug_inject_fops = {
170 .write = xgene_edac_mc_err_inject_write,
171 .llseek = generic_file_llseek,
174 static void xgene_edac_mc_create_debugfs_node(struct mem_ctl_info *mci)
176 if (!IS_ENABLED(CONFIG_EDAC_DEBUG))
182 edac_debugfs_create_file("inject_ctrl", S_IWUSR, mci->debugfs, mci,
183 &xgene_edac_mc_debug_inject_fops);
186 static void xgene_edac_mc_check(struct mem_ctl_info *mci)
188 struct xgene_edac_mc_ctx *ctx = mci->pvt_info;
189 unsigned int pcp_hp_stat;
190 unsigned int pcp_lp_stat;
197 xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat);
198 xgene_edac_pcp_rd(ctx->edac, PCPLPERRINTSTS, &pcp_lp_stat);
199 if (!((MCU_UNCORR_ERR_MASK & pcp_hp_stat) ||
200 (MCU_CTL_ERR_MASK & pcp_hp_stat) ||
201 (MCU_CORR_ERR_MASK & pcp_lp_stat)))
204 for (rank = 0; rank < MCU_MAX_RANK; rank++) {
205 reg = readl(ctx->mcu_csr + MCUESRR0 + rank * MCU_RANK_STRIDE);
207 /* Detect uncorrectable memory error */
208 if (reg & (MCU_ESRR_DEMANDUCERR_MASK |
209 MCU_ESRR_BACKUCERR_MASK)) {
210 /* Detected uncorrectable memory error */
211 edac_mc_chipset_printk(mci, KERN_ERR, "X-Gene",
212 "MCU uncorrectable error at rank %d\n", rank);
214 edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci,
215 1, 0, 0, 0, 0, 0, -1, mci->ctl_name, "");
218 /* Detect correctable memory error */
219 if (reg & MCU_ESRR_CERR_MASK) {
220 bank = readl(ctx->mcu_csr + MCUEBLRR0 +
221 rank * MCU_RANK_STRIDE);
222 col_row = readl(ctx->mcu_csr + MCUERCRR0 +
223 rank * MCU_RANK_STRIDE);
224 count = readl(ctx->mcu_csr + MCUSBECNT0 +
225 rank * MCU_RANK_STRIDE);
226 edac_mc_chipset_printk(mci, KERN_WARNING, "X-Gene",
227 "MCU correctable error at rank %d bank %d column %d row %d count %d\n",
228 rank, MCU_EBLRR_ERRBANK_RD(bank),
229 MCU_ERCRR_ERRCOL_RD(col_row),
230 MCU_ERCRR_ERRROW_RD(col_row),
231 MCU_SBECNT_COUNT(count));
233 edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci,
234 1, 0, 0, 0, 0, 0, -1, mci->ctl_name, "");
237 /* Clear all error registers */
238 writel(0x0, ctx->mcu_csr + MCUEBLRR0 + rank * MCU_RANK_STRIDE);
239 writel(0x0, ctx->mcu_csr + MCUERCRR0 + rank * MCU_RANK_STRIDE);
240 writel(0x0, ctx->mcu_csr + MCUSBECNT0 +
241 rank * MCU_RANK_STRIDE);
242 writel(reg, ctx->mcu_csr + MCUESRR0 + rank * MCU_RANK_STRIDE);
245 /* Detect memory controller error */
246 reg = readl(ctx->mcu_csr + MCUGESR);
248 if (reg & MCU_GESR_ADDRNOMATCH_ERR_MASK)
249 edac_mc_chipset_printk(mci, KERN_WARNING, "X-Gene",
250 "MCU address miss-match error\n");
251 if (reg & MCU_GESR_ADDRMULTIMATCH_ERR_MASK)
252 edac_mc_chipset_printk(mci, KERN_WARNING, "X-Gene",
253 "MCU address multi-match error\n");
255 writel(reg, ctx->mcu_csr + MCUGESR);
259 static void xgene_edac_mc_irq_ctl(struct mem_ctl_info *mci, bool enable)
261 struct xgene_edac_mc_ctx *ctx = mci->pvt_info;
264 if (edac_op_state != EDAC_OPSTATE_INT)
267 mutex_lock(&ctx->edac->mc_lock);
270 * As there is only single bit for enable error and interrupt mask,
271 * we must only enable top level interrupt after all MCUs are
272 * registered. Otherwise, if there is an error and the corresponding
273 * MCU has not registered, the interrupt will never get cleared. To
274 * determine all MCU have registered, we will keep track of active
275 * MCUs and registered MCUs.
278 /* Set registered MCU bit */
279 ctx->edac->mc_registered_mask |= 1 << ctx->mcu_id;
281 /* Enable interrupt after all active MCU registered */
282 if (ctx->edac->mc_registered_mask ==
283 ctx->edac->mc_active_mask) {
284 /* Enable memory controller top level interrupt */
285 xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
286 MCU_UNCORR_ERR_MASK |
288 xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
292 /* Enable MCU interrupt and error reporting */
293 val = readl(ctx->mcu_csr + MCUGECR);
294 val |= MCU_GECR_DEMANDUCINTREN_MASK |
295 MCU_GECR_BACKUCINTREN_MASK |
296 MCU_GECR_CINTREN_MASK |
297 MUC_GECR_MCUADDRERREN_MASK;
298 writel(val, ctx->mcu_csr + MCUGECR);
300 /* Disable MCU interrupt */
301 val = readl(ctx->mcu_csr + MCUGECR);
302 val &= ~(MCU_GECR_DEMANDUCINTREN_MASK |
303 MCU_GECR_BACKUCINTREN_MASK |
304 MCU_GECR_CINTREN_MASK |
305 MUC_GECR_MCUADDRERREN_MASK);
306 writel(val, ctx->mcu_csr + MCUGECR);
308 /* Disable memory controller top level interrupt */
309 xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
310 MCU_UNCORR_ERR_MASK | MCU_CTL_ERR_MASK);
311 xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
314 /* Clear registered MCU bit */
315 ctx->edac->mc_registered_mask &= ~(1 << ctx->mcu_id);
318 mutex_unlock(&ctx->edac->mc_lock);
321 static int xgene_edac_mc_is_active(struct xgene_edac_mc_ctx *ctx, int mc_idx)
326 if (regmap_read(ctx->edac->csw_map, CSW_CSWCR, ®))
329 if (reg & CSW_CSWCR_DUALMCB_MASK) {
331 * Dual MCB active - Determine if all 4 active or just MCU0
334 if (regmap_read(ctx->edac->mcbb_map, MCBADDRMR, ®))
336 mcu_mask = (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0xF : 0x5;
339 * Single MCB active - Determine if MCU0/MCU1 or just MCU0
342 if (regmap_read(ctx->edac->mcba_map, MCBADDRMR, ®))
344 mcu_mask = (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0x3 : 0x1;
347 /* Save active MC mask if hasn't set already */
348 if (!ctx->edac->mc_active_mask)
349 ctx->edac->mc_active_mask = mcu_mask;
351 return (mcu_mask & (1 << mc_idx)) ? 1 : 0;
354 static int xgene_edac_mc_add(struct xgene_edac *edac, struct device_node *np)
356 struct mem_ctl_info *mci;
357 struct edac_mc_layer layers[2];
358 struct xgene_edac_mc_ctx tmp_ctx;
359 struct xgene_edac_mc_ctx *ctx;
363 memset(&tmp_ctx, 0, sizeof(tmp_ctx));
366 if (!devres_open_group(edac->dev, xgene_edac_mc_add, GFP_KERNEL))
369 rc = of_address_to_resource(np, 0, &res);
371 dev_err(edac->dev, "no MCU resource address\n");
374 tmp_ctx.mcu_csr = devm_ioremap_resource(edac->dev, &res);
375 if (IS_ERR(tmp_ctx.mcu_csr)) {
376 dev_err(edac->dev, "unable to map MCU resource\n");
377 rc = PTR_ERR(tmp_ctx.mcu_csr);
381 /* Ignore non-active MCU */
382 if (of_property_read_u32(np, "memory-controller", &tmp_ctx.mcu_id)) {
383 dev_err(edac->dev, "no memory-controller property\n");
387 if (!xgene_edac_mc_is_active(&tmp_ctx, tmp_ctx.mcu_id)) {
392 layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
394 layers[0].is_virt_csrow = true;
395 layers[1].type = EDAC_MC_LAYER_CHANNEL;
397 layers[1].is_virt_csrow = false;
398 mci = edac_mc_alloc(tmp_ctx.mcu_id, ARRAY_SIZE(layers), layers,
406 *ctx = tmp_ctx; /* Copy over resource value */
407 ctx->name = "xgene_edac_mc_err";
409 mci->pdev = &mci->dev;
410 mci->ctl_name = ctx->name;
411 mci->dev_name = ctx->name;
413 mci->mtype_cap = MEM_FLAG_RDDR | MEM_FLAG_RDDR2 | MEM_FLAG_RDDR3 |
414 MEM_FLAG_DDR | MEM_FLAG_DDR2 | MEM_FLAG_DDR3;
415 mci->edac_ctl_cap = EDAC_FLAG_SECDED;
416 mci->edac_cap = EDAC_FLAG_SECDED;
417 mci->mod_name = EDAC_MOD_STR;
418 mci->mod_ver = "0.1";
419 mci->ctl_page_to_phys = NULL;
420 mci->scrub_cap = SCRUB_FLAG_HW_SRC;
421 mci->scrub_mode = SCRUB_HW_SRC;
423 if (edac_op_state == EDAC_OPSTATE_POLL)
424 mci->edac_check = xgene_edac_mc_check;
426 if (edac_mc_add_mc(mci)) {
427 dev_err(edac->dev, "edac_mc_add_mc failed\n");
432 xgene_edac_mc_create_debugfs_node(mci);
434 list_add(&ctx->next, &edac->mcus);
436 xgene_edac_mc_irq_ctl(mci, true);
438 devres_remove_group(edac->dev, xgene_edac_mc_add);
440 dev_info(edac->dev, "X-Gene EDAC MC registered\n");
446 devres_release_group(edac->dev, xgene_edac_mc_add);
450 static int xgene_edac_mc_remove(struct xgene_edac_mc_ctx *mcu)
452 xgene_edac_mc_irq_ctl(mcu->mci, false);
453 edac_mc_del_mc(&mcu->mci->dev);
454 edac_mc_free(mcu->mci);
458 /* CPU L1/L2 error CSR */
459 #define MAX_CPU_PER_PMD 2
460 #define CPU_CSR_STRIDE 0x00100000
461 #define CPU_L2C_PAGE 0x000D0000
462 #define CPU_MEMERR_L2C_PAGE 0x000E0000
463 #define CPU_MEMERR_CPU_PAGE 0x000F0000
465 #define MEMERR_CPU_ICFECR_PAGE_OFFSET 0x0000
466 #define MEMERR_CPU_ICFESR_PAGE_OFFSET 0x0004
467 #define MEMERR_CPU_ICFESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24)
468 #define MEMERR_CPU_ICFESR_ERRINDEX_RD(src) (((src) & 0x003F0000) >> 16)
469 #define MEMERR_CPU_ICFESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8)
470 #define MEMERR_CPU_ICFESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4)
471 #define MEMERR_CPU_ICFESR_MULTCERR_MASK BIT(2)
472 #define MEMERR_CPU_ICFESR_CERR_MASK BIT(0)
473 #define MEMERR_CPU_LSUESR_PAGE_OFFSET 0x000c
474 #define MEMERR_CPU_LSUESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24)
475 #define MEMERR_CPU_LSUESR_ERRINDEX_RD(src) (((src) & 0x003F0000) >> 16)
476 #define MEMERR_CPU_LSUESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8)
477 #define MEMERR_CPU_LSUESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4)
478 #define MEMERR_CPU_LSUESR_MULTCERR_MASK BIT(2)
479 #define MEMERR_CPU_LSUESR_CERR_MASK BIT(0)
480 #define MEMERR_CPU_LSUECR_PAGE_OFFSET 0x0008
481 #define MEMERR_CPU_MMUECR_PAGE_OFFSET 0x0010
482 #define MEMERR_CPU_MMUESR_PAGE_OFFSET 0x0014
483 #define MEMERR_CPU_MMUESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24)
484 #define MEMERR_CPU_MMUESR_ERRINDEX_RD(src) (((src) & 0x007F0000) >> 16)
485 #define MEMERR_CPU_MMUESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8)
486 #define MEMERR_CPU_MMUESR_ERRREQSTR_LSU_MASK BIT(7)
487 #define MEMERR_CPU_MMUESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4)
488 #define MEMERR_CPU_MMUESR_MULTCERR_MASK BIT(2)
489 #define MEMERR_CPU_MMUESR_CERR_MASK BIT(0)
490 #define MEMERR_CPU_ICFESRA_PAGE_OFFSET 0x0804
491 #define MEMERR_CPU_LSUESRA_PAGE_OFFSET 0x080c
492 #define MEMERR_CPU_MMUESRA_PAGE_OFFSET 0x0814
494 #define MEMERR_L2C_L2ECR_PAGE_OFFSET 0x0000
495 #define MEMERR_L2C_L2ESR_PAGE_OFFSET 0x0004
496 #define MEMERR_L2C_L2ESR_ERRSYN_RD(src) (((src) & 0xFF000000) >> 24)
497 #define MEMERR_L2C_L2ESR_ERRWAY_RD(src) (((src) & 0x00FC0000) >> 18)
498 #define MEMERR_L2C_L2ESR_ERRCPU_RD(src) (((src) & 0x00020000) >> 17)
499 #define MEMERR_L2C_L2ESR_ERRGROUP_RD(src) (((src) & 0x0000E000) >> 13)
500 #define MEMERR_L2C_L2ESR_ERRACTION_RD(src) (((src) & 0x00001C00) >> 10)
501 #define MEMERR_L2C_L2ESR_ERRTYPE_RD(src) (((src) & 0x00000300) >> 8)
502 #define MEMERR_L2C_L2ESR_MULTUCERR_MASK BIT(3)
503 #define MEMERR_L2C_L2ESR_MULTICERR_MASK BIT(2)
504 #define MEMERR_L2C_L2ESR_UCERR_MASK BIT(1)
505 #define MEMERR_L2C_L2ESR_ERR_MASK BIT(0)
506 #define MEMERR_L2C_L2EALR_PAGE_OFFSET 0x0008
507 #define CPUX_L2C_L2RTOCR_PAGE_OFFSET 0x0010
508 #define MEMERR_L2C_L2EAHR_PAGE_OFFSET 0x000c
509 #define CPUX_L2C_L2RTOSR_PAGE_OFFSET 0x0014
510 #define MEMERR_L2C_L2RTOSR_MULTERR_MASK BIT(1)
511 #define MEMERR_L2C_L2RTOSR_ERR_MASK BIT(0)
512 #define CPUX_L2C_L2RTOALR_PAGE_OFFSET 0x0018
513 #define CPUX_L2C_L2RTOAHR_PAGE_OFFSET 0x001c
514 #define MEMERR_L2C_L2ESRA_PAGE_OFFSET 0x0804
517 * Processor Module Domain (PMD) context - Context for a pair of processsors.
518 * Each PMD consists of 2 CPUs and a shared L2 cache. Each CPU consists of
521 struct xgene_edac_pmd_ctx {
522 struct list_head next;
525 struct xgene_edac *edac;
526 struct edac_device_ctl_info *edac_dev;
527 void __iomem *pmd_csr;
532 static void xgene_edac_pmd_l1_check(struct edac_device_ctl_info *edac_dev,
535 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
539 pg_f = ctx->pmd_csr + cpu_idx * CPU_CSR_STRIDE + CPU_MEMERR_CPU_PAGE;
541 val = readl(pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET);
544 dev_err(edac_dev->dev,
545 "CPU%d L1 memory error ICF 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n",
546 ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val,
547 MEMERR_CPU_ICFESR_ERRWAY_RD(val),
548 MEMERR_CPU_ICFESR_ERRINDEX_RD(val),
549 MEMERR_CPU_ICFESR_ERRINFO_RD(val));
550 if (val & MEMERR_CPU_ICFESR_CERR_MASK)
551 dev_err(edac_dev->dev, "One or more correctable error\n");
552 if (val & MEMERR_CPU_ICFESR_MULTCERR_MASK)
553 dev_err(edac_dev->dev, "Multiple correctable error\n");
554 switch (MEMERR_CPU_ICFESR_ERRTYPE_RD(val)) {
556 dev_err(edac_dev->dev, "L1 TLB multiple hit\n");
559 dev_err(edac_dev->dev, "Way select multiple hit\n");
562 dev_err(edac_dev->dev, "Physical tag parity error\n");
566 dev_err(edac_dev->dev, "L1 data parity error\n");
569 dev_err(edac_dev->dev, "L1 pre-decode parity error\n");
573 /* Clear any HW errors */
574 writel(val, pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET);
576 if (val & (MEMERR_CPU_ICFESR_CERR_MASK |
577 MEMERR_CPU_ICFESR_MULTCERR_MASK))
578 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
581 val = readl(pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET);
584 dev_err(edac_dev->dev,
585 "CPU%d memory error LSU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n",
586 ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val,
587 MEMERR_CPU_LSUESR_ERRWAY_RD(val),
588 MEMERR_CPU_LSUESR_ERRINDEX_RD(val),
589 MEMERR_CPU_LSUESR_ERRINFO_RD(val));
590 if (val & MEMERR_CPU_LSUESR_CERR_MASK)
591 dev_err(edac_dev->dev, "One or more correctable error\n");
592 if (val & MEMERR_CPU_LSUESR_MULTCERR_MASK)
593 dev_err(edac_dev->dev, "Multiple correctable error\n");
594 switch (MEMERR_CPU_LSUESR_ERRTYPE_RD(val)) {
596 dev_err(edac_dev->dev, "Load tag error\n");
599 dev_err(edac_dev->dev, "Load data error\n");
602 dev_err(edac_dev->dev, "WSL multihit error\n");
605 dev_err(edac_dev->dev, "Store tag error\n");
608 dev_err(edac_dev->dev,
609 "DTB multihit from load pipeline error\n");
612 dev_err(edac_dev->dev,
613 "DTB multihit from store pipeline error\n");
617 /* Clear any HW errors */
618 writel(val, pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET);
620 if (val & (MEMERR_CPU_LSUESR_CERR_MASK |
621 MEMERR_CPU_LSUESR_MULTCERR_MASK))
622 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
625 val = readl(pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET);
628 dev_err(edac_dev->dev,
629 "CPU%d memory error MMU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X %s\n",
630 ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val,
631 MEMERR_CPU_MMUESR_ERRWAY_RD(val),
632 MEMERR_CPU_MMUESR_ERRINDEX_RD(val),
633 MEMERR_CPU_MMUESR_ERRINFO_RD(val),
634 val & MEMERR_CPU_MMUESR_ERRREQSTR_LSU_MASK ? "LSU" : "ICF");
635 if (val & MEMERR_CPU_MMUESR_CERR_MASK)
636 dev_err(edac_dev->dev, "One or more correctable error\n");
637 if (val & MEMERR_CPU_MMUESR_MULTCERR_MASK)
638 dev_err(edac_dev->dev, "Multiple correctable error\n");
639 switch (MEMERR_CPU_MMUESR_ERRTYPE_RD(val)) {
641 dev_err(edac_dev->dev, "Stage 1 UTB hit error\n");
644 dev_err(edac_dev->dev, "Stage 1 UTB miss error\n");
647 dev_err(edac_dev->dev, "Stage 1 UTB allocate error\n");
650 dev_err(edac_dev->dev, "TMO operation single bank error\n");
653 dev_err(edac_dev->dev, "Stage 2 UTB error\n");
656 dev_err(edac_dev->dev, "Stage 2 UTB miss error\n");
659 dev_err(edac_dev->dev, "Stage 2 UTB allocate error\n");
662 dev_err(edac_dev->dev, "TMO operation multiple bank error\n");
666 /* Clear any HW errors */
667 writel(val, pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET);
669 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
672 static void xgene_edac_pmd_l2_check(struct edac_device_ctl_info *edac_dev)
674 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
682 pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE;
683 val = readl(pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET);
686 val_lo = readl(pg_e + MEMERR_L2C_L2EALR_PAGE_OFFSET);
687 val_hi = readl(pg_e + MEMERR_L2C_L2EAHR_PAGE_OFFSET);
688 dev_err(edac_dev->dev,
689 "PMD%d memory error L2C L2ESR 0x%08X @ 0x%08X.%08X\n",
690 ctx->pmd, val, val_hi, val_lo);
691 dev_err(edac_dev->dev,
692 "ErrSyndrome 0x%02X ErrWay 0x%02X ErrCpu %d ErrGroup 0x%02X ErrAction 0x%02X\n",
693 MEMERR_L2C_L2ESR_ERRSYN_RD(val),
694 MEMERR_L2C_L2ESR_ERRWAY_RD(val),
695 MEMERR_L2C_L2ESR_ERRCPU_RD(val),
696 MEMERR_L2C_L2ESR_ERRGROUP_RD(val),
697 MEMERR_L2C_L2ESR_ERRACTION_RD(val));
699 if (val & MEMERR_L2C_L2ESR_ERR_MASK)
700 dev_err(edac_dev->dev, "One or more correctable error\n");
701 if (val & MEMERR_L2C_L2ESR_MULTICERR_MASK)
702 dev_err(edac_dev->dev, "Multiple correctable error\n");
703 if (val & MEMERR_L2C_L2ESR_UCERR_MASK)
704 dev_err(edac_dev->dev, "One or more uncorrectable error\n");
705 if (val & MEMERR_L2C_L2ESR_MULTUCERR_MASK)
706 dev_err(edac_dev->dev, "Multiple uncorrectable error\n");
708 switch (MEMERR_L2C_L2ESR_ERRTYPE_RD(val)) {
710 dev_err(edac_dev->dev, "Outbound SDB parity error\n");
713 dev_err(edac_dev->dev, "Inbound SDB parity error\n");
716 dev_err(edac_dev->dev, "Tag ECC error\n");
719 dev_err(edac_dev->dev, "Data ECC error\n");
723 /* Clear any HW errors */
724 writel(val, pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET);
726 if (val & (MEMERR_L2C_L2ESR_ERR_MASK |
727 MEMERR_L2C_L2ESR_MULTICERR_MASK))
728 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
729 if (val & (MEMERR_L2C_L2ESR_UCERR_MASK |
730 MEMERR_L2C_L2ESR_MULTUCERR_MASK))
731 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
734 /* Check if any memory request timed out on L2 cache */
735 pg_d = ctx->pmd_csr + CPU_L2C_PAGE;
736 val = readl(pg_d + CPUX_L2C_L2RTOSR_PAGE_OFFSET);
738 val_lo = readl(pg_d + CPUX_L2C_L2RTOALR_PAGE_OFFSET);
739 val_hi = readl(pg_d + CPUX_L2C_L2RTOAHR_PAGE_OFFSET);
740 dev_err(edac_dev->dev,
741 "PMD%d L2C error L2C RTOSR 0x%08X @ 0x%08X.%08X\n",
742 ctx->pmd, val, val_hi, val_lo);
743 writel(val, pg_d + CPUX_L2C_L2RTOSR_PAGE_OFFSET);
747 static void xgene_edac_pmd_check(struct edac_device_ctl_info *edac_dev)
749 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
750 unsigned int pcp_hp_stat;
753 xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat);
754 if (!((PMD0_MERR_MASK << ctx->pmd) & pcp_hp_stat))
757 /* Check CPU L1 error */
758 for (i = 0; i < MAX_CPU_PER_PMD; i++)
759 xgene_edac_pmd_l1_check(edac_dev, i);
761 /* Check CPU L2 error */
762 xgene_edac_pmd_l2_check(edac_dev);
765 static void xgene_edac_pmd_cpu_hw_cfg(struct edac_device_ctl_info *edac_dev,
768 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
769 void __iomem *pg_f = ctx->pmd_csr + cpu * CPU_CSR_STRIDE +
773 * Enable CPU memory error:
774 * MEMERR_CPU_ICFESRA, MEMERR_CPU_LSUESRA, and MEMERR_CPU_MMUESRA
776 writel(0x00000301, pg_f + MEMERR_CPU_ICFECR_PAGE_OFFSET);
777 writel(0x00000301, pg_f + MEMERR_CPU_LSUECR_PAGE_OFFSET);
778 writel(0x00000101, pg_f + MEMERR_CPU_MMUECR_PAGE_OFFSET);
781 static void xgene_edac_pmd_hw_cfg(struct edac_device_ctl_info *edac_dev)
783 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
784 void __iomem *pg_d = ctx->pmd_csr + CPU_L2C_PAGE;
785 void __iomem *pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE;
787 /* Enable PMD memory error - MEMERR_L2C_L2ECR and L2C_L2RTOCR */
788 writel(0x00000703, pg_e + MEMERR_L2C_L2ECR_PAGE_OFFSET);
789 /* Configure L2C HW request time out feature if supported */
790 if (ctx->version > 1)
791 writel(0x00000119, pg_d + CPUX_L2C_L2RTOCR_PAGE_OFFSET);
794 static void xgene_edac_pmd_hw_ctl(struct edac_device_ctl_info *edac_dev,
797 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
800 /* Enable PMD error interrupt */
801 if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
803 xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
804 PMD0_MERR_MASK << ctx->pmd);
806 xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
807 PMD0_MERR_MASK << ctx->pmd);
811 xgene_edac_pmd_hw_cfg(edac_dev);
813 /* Two CPUs per a PMD */
814 for (i = 0; i < MAX_CPU_PER_PMD; i++)
815 xgene_edac_pmd_cpu_hw_cfg(edac_dev, i);
819 static ssize_t xgene_edac_pmd_l1_inject_ctrl_write(struct file *file,
820 const char __user *data,
821 size_t count, loff_t *ppos)
823 struct edac_device_ctl_info *edac_dev = file->private_data;
824 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
825 void __iomem *cpux_pg_f;
828 for (i = 0; i < MAX_CPU_PER_PMD; i++) {
829 cpux_pg_f = ctx->pmd_csr + i * CPU_CSR_STRIDE +
832 writel(MEMERR_CPU_ICFESR_MULTCERR_MASK |
833 MEMERR_CPU_ICFESR_CERR_MASK,
834 cpux_pg_f + MEMERR_CPU_ICFESRA_PAGE_OFFSET);
835 writel(MEMERR_CPU_LSUESR_MULTCERR_MASK |
836 MEMERR_CPU_LSUESR_CERR_MASK,
837 cpux_pg_f + MEMERR_CPU_LSUESRA_PAGE_OFFSET);
838 writel(MEMERR_CPU_MMUESR_MULTCERR_MASK |
839 MEMERR_CPU_MMUESR_CERR_MASK,
840 cpux_pg_f + MEMERR_CPU_MMUESRA_PAGE_OFFSET);
845 static ssize_t xgene_edac_pmd_l2_inject_ctrl_write(struct file *file,
846 const char __user *data,
847 size_t count, loff_t *ppos)
849 struct edac_device_ctl_info *edac_dev = file->private_data;
850 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
851 void __iomem *pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE;
853 writel(MEMERR_L2C_L2ESR_MULTUCERR_MASK |
854 MEMERR_L2C_L2ESR_MULTICERR_MASK |
855 MEMERR_L2C_L2ESR_UCERR_MASK |
856 MEMERR_L2C_L2ESR_ERR_MASK,
857 pg_e + MEMERR_L2C_L2ESRA_PAGE_OFFSET);
861 static const struct file_operations xgene_edac_pmd_debug_inject_fops[] = {
864 .write = xgene_edac_pmd_l1_inject_ctrl_write,
865 .llseek = generic_file_llseek, },
868 .write = xgene_edac_pmd_l2_inject_ctrl_write,
869 .llseek = generic_file_llseek, },
874 xgene_edac_pmd_create_debugfs_nodes(struct edac_device_ctl_info *edac_dev)
876 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
877 struct dentry *dbgfs_dir;
880 if (!IS_ENABLED(CONFIG_EDAC_DEBUG) || !ctx->edac->dfs)
883 snprintf(name, sizeof(name), "PMD%d", ctx->pmd);
884 dbgfs_dir = edac_debugfs_create_dir_at(name, ctx->edac->dfs);
888 edac_debugfs_create_file("l1_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev,
889 &xgene_edac_pmd_debug_inject_fops[0]);
890 edac_debugfs_create_file("l2_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev,
891 &xgene_edac_pmd_debug_inject_fops[1]);
894 static int xgene_edac_pmd_available(u32 efuse, int pmd)
896 return (efuse & (1 << pmd)) ? 0 : 1;
899 static int xgene_edac_pmd_add(struct xgene_edac *edac, struct device_node *np,
902 struct edac_device_ctl_info *edac_dev;
903 struct xgene_edac_pmd_ctx *ctx;
910 if (!devres_open_group(edac->dev, xgene_edac_pmd_add, GFP_KERNEL))
913 /* Determine if this PMD is disabled */
914 if (of_property_read_u32(np, "pmd-controller", &pmd)) {
915 dev_err(edac->dev, "no pmd-controller property\n");
919 rc = regmap_read(edac->efuse_map, 0, &val);
922 if (!xgene_edac_pmd_available(val, pmd)) {
927 snprintf(edac_name, sizeof(edac_name), "l2c%d", pmd);
928 edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
929 edac_name, 1, "l2c", 1, 2, NULL,
930 0, edac_device_alloc_index());
936 ctx = edac_dev->pvt_info;
937 ctx->name = "xgene_pmd_err";
940 ctx->edac_dev = edac_dev;
941 ctx->ddev = *edac->dev;
942 ctx->version = version;
943 edac_dev->dev = &ctx->ddev;
944 edac_dev->ctl_name = ctx->name;
945 edac_dev->dev_name = ctx->name;
946 edac_dev->mod_name = EDAC_MOD_STR;
948 rc = of_address_to_resource(np, 0, &res);
950 dev_err(edac->dev, "no PMD resource address\n");
953 ctx->pmd_csr = devm_ioremap_resource(edac->dev, &res);
954 if (IS_ERR(ctx->pmd_csr)) {
956 "devm_ioremap_resource failed for PMD resource address\n");
957 rc = PTR_ERR(ctx->pmd_csr);
961 if (edac_op_state == EDAC_OPSTATE_POLL)
962 edac_dev->edac_check = xgene_edac_pmd_check;
964 xgene_edac_pmd_create_debugfs_nodes(edac_dev);
966 rc = edac_device_add_device(edac_dev);
968 dev_err(edac->dev, "edac_device_add_device failed\n");
973 if (edac_op_state == EDAC_OPSTATE_INT)
974 edac_dev->op_state = OP_RUNNING_INTERRUPT;
976 list_add(&ctx->next, &edac->pmds);
978 xgene_edac_pmd_hw_ctl(edac_dev, 1);
980 devres_remove_group(edac->dev, xgene_edac_pmd_add);
982 dev_info(edac->dev, "X-Gene EDAC PMD%d registered\n", ctx->pmd);
986 edac_device_free_ctl_info(edac_dev);
988 devres_release_group(edac->dev, xgene_edac_pmd_add);
992 static int xgene_edac_pmd_remove(struct xgene_edac_pmd_ctx *pmd)
994 struct edac_device_ctl_info *edac_dev = pmd->edac_dev;
996 xgene_edac_pmd_hw_ctl(edac_dev, 0);
997 edac_device_del_device(edac_dev->dev);
998 edac_device_free_ctl_info(edac_dev);
1002 /* L3 Error device */
1003 #define L3C_ESR (0x0A * 4)
1004 #define L3C_ESR_DATATAG_MASK BIT(9)
1005 #define L3C_ESR_MULTIHIT_MASK BIT(8)
1006 #define L3C_ESR_UCEVICT_MASK BIT(6)
1007 #define L3C_ESR_MULTIUCERR_MASK BIT(5)
1008 #define L3C_ESR_MULTICERR_MASK BIT(4)
1009 #define L3C_ESR_UCERR_MASK BIT(3)
1010 #define L3C_ESR_CERR_MASK BIT(2)
1011 #define L3C_ESR_UCERRINTR_MASK BIT(1)
1012 #define L3C_ESR_CERRINTR_MASK BIT(0)
1013 #define L3C_ECR (0x0B * 4)
1014 #define L3C_ECR_UCINTREN BIT(3)
1015 #define L3C_ECR_CINTREN BIT(2)
1016 #define L3C_UCERREN BIT(1)
1017 #define L3C_CERREN BIT(0)
1018 #define L3C_ELR (0x0C * 4)
1019 #define L3C_ELR_ERRSYN(src) ((src & 0xFF800000) >> 23)
1020 #define L3C_ELR_ERRWAY(src) ((src & 0x007E0000) >> 17)
1021 #define L3C_ELR_AGENTID(src) ((src & 0x0001E000) >> 13)
1022 #define L3C_ELR_ERRGRP(src) ((src & 0x00000F00) >> 8)
1023 #define L3C_ELR_OPTYPE(src) ((src & 0x000000F0) >> 4)
1024 #define L3C_ELR_PADDRHIGH(src) (src & 0x0000000F)
1025 #define L3C_AELR (0x0D * 4)
1026 #define L3C_BELR (0x0E * 4)
1027 #define L3C_BELR_BANK(src) (src & 0x0000000F)
1029 struct xgene_edac_dev_ctx {
1030 struct list_head next;
1033 struct xgene_edac *edac;
1034 struct edac_device_ctl_info *edac_dev;
1036 void __iomem *dev_csr;
1041 * Version 1 of the L3 controller has broken single bit correctable logic for
1042 * certain error syndromes. Log them as uncorrectable in that case.
1044 static bool xgene_edac_l3_promote_to_uc_err(u32 l3cesr, u32 l3celr)
1046 if (l3cesr & L3C_ESR_DATATAG_MASK) {
1047 switch (L3C_ELR_ERRSYN(l3celr)) {
1060 } else if (L3C_ELR_ERRSYN(l3celr) == 9)
1066 static void xgene_edac_l3_check(struct edac_device_ctl_info *edac_dev)
1068 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1074 l3cesr = readl(ctx->dev_csr + L3C_ESR);
1075 if (!(l3cesr & (L3C_ESR_UCERR_MASK | L3C_ESR_CERR_MASK)))
1078 if (l3cesr & L3C_ESR_UCERR_MASK)
1079 dev_err(edac_dev->dev, "L3C uncorrectable error\n");
1080 if (l3cesr & L3C_ESR_CERR_MASK)
1081 dev_warn(edac_dev->dev, "L3C correctable error\n");
1083 l3celr = readl(ctx->dev_csr + L3C_ELR);
1084 l3caelr = readl(ctx->dev_csr + L3C_AELR);
1085 l3cbelr = readl(ctx->dev_csr + L3C_BELR);
1086 if (l3cesr & L3C_ESR_MULTIHIT_MASK)
1087 dev_err(edac_dev->dev, "L3C multiple hit error\n");
1088 if (l3cesr & L3C_ESR_UCEVICT_MASK)
1089 dev_err(edac_dev->dev,
1090 "L3C dropped eviction of line with error\n");
1091 if (l3cesr & L3C_ESR_MULTIUCERR_MASK)
1092 dev_err(edac_dev->dev, "L3C multiple uncorrectable error\n");
1093 if (l3cesr & L3C_ESR_DATATAG_MASK)
1094 dev_err(edac_dev->dev,
1095 "L3C data error syndrome 0x%X group 0x%X\n",
1096 L3C_ELR_ERRSYN(l3celr), L3C_ELR_ERRGRP(l3celr));
1098 dev_err(edac_dev->dev,
1099 "L3C tag error syndrome 0x%X Way of Tag 0x%X Agent ID 0x%X Operation type 0x%X\n",
1100 L3C_ELR_ERRSYN(l3celr), L3C_ELR_ERRWAY(l3celr),
1101 L3C_ELR_AGENTID(l3celr), L3C_ELR_OPTYPE(l3celr));
1103 * NOTE: Address [41:38] in L3C_ELR_PADDRHIGH(l3celr).
1104 * Address [37:6] in l3caelr. Lower 6 bits are zero.
1106 dev_err(edac_dev->dev, "L3C error address 0x%08X.%08X bank %d\n",
1107 L3C_ELR_PADDRHIGH(l3celr) << 6 | (l3caelr >> 26),
1108 (l3caelr & 0x3FFFFFFF) << 6, L3C_BELR_BANK(l3cbelr));
1109 dev_err(edac_dev->dev,
1110 "L3C error status register value 0x%X\n", l3cesr);
1112 /* Clear L3C error interrupt */
1113 writel(0, ctx->dev_csr + L3C_ESR);
1115 if (ctx->version <= 1 &&
1116 xgene_edac_l3_promote_to_uc_err(l3cesr, l3celr)) {
1117 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
1120 if (l3cesr & L3C_ESR_CERR_MASK)
1121 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
1122 if (l3cesr & L3C_ESR_UCERR_MASK)
1123 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
1126 static void xgene_edac_l3_hw_init(struct edac_device_ctl_info *edac_dev,
1129 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1132 val = readl(ctx->dev_csr + L3C_ECR);
1133 val |= L3C_UCERREN | L3C_CERREN;
1134 /* On disable, we just disable interrupt but keep error enabled */
1135 if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
1137 val |= L3C_ECR_UCINTREN | L3C_ECR_CINTREN;
1139 val &= ~(L3C_ECR_UCINTREN | L3C_ECR_CINTREN);
1141 writel(val, ctx->dev_csr + L3C_ECR);
1143 if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
1144 /* Enable/disable L3 error top level interrupt */
1146 xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
1147 L3C_UNCORR_ERR_MASK);
1148 xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
1151 xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
1152 L3C_UNCORR_ERR_MASK);
1153 xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
1159 static ssize_t xgene_edac_l3_inject_ctrl_write(struct file *file,
1160 const char __user *data,
1161 size_t count, loff_t *ppos)
1163 struct edac_device_ctl_info *edac_dev = file->private_data;
1164 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1166 /* Generate all errors */
1167 writel(0xFFFFFFFF, ctx->dev_csr + L3C_ESR);
1171 static const struct file_operations xgene_edac_l3_debug_inject_fops = {
1172 .open = simple_open,
1173 .write = xgene_edac_l3_inject_ctrl_write,
1174 .llseek = generic_file_llseek
1178 xgene_edac_l3_create_debugfs_nodes(struct edac_device_ctl_info *edac_dev)
1180 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1181 struct dentry *dbgfs_dir;
1184 if (!IS_ENABLED(CONFIG_EDAC_DEBUG) || !ctx->edac->dfs)
1187 snprintf(name, sizeof(name), "l3c%d", ctx->edac_idx);
1188 dbgfs_dir = edac_debugfs_create_dir_at(name, ctx->edac->dfs);
1192 debugfs_create_file("l3_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev,
1193 &xgene_edac_l3_debug_inject_fops);
1196 static int xgene_edac_l3_add(struct xgene_edac *edac, struct device_node *np,
1199 struct edac_device_ctl_info *edac_dev;
1200 struct xgene_edac_dev_ctx *ctx;
1201 struct resource res;
1202 void __iomem *dev_csr;
1206 if (!devres_open_group(edac->dev, xgene_edac_l3_add, GFP_KERNEL))
1209 rc = of_address_to_resource(np, 0, &res);
1211 dev_err(edac->dev, "no L3 resource address\n");
1212 goto err_release_group;
1214 dev_csr = devm_ioremap_resource(edac->dev, &res);
1215 if (IS_ERR(dev_csr)) {
1217 "devm_ioremap_resource failed for L3 resource address\n");
1218 rc = PTR_ERR(dev_csr);
1219 goto err_release_group;
1222 edac_idx = edac_device_alloc_index();
1223 edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
1224 "l3c", 1, "l3c", 1, 0, NULL, 0,
1228 goto err_release_group;
1231 ctx = edac_dev->pvt_info;
1232 ctx->dev_csr = dev_csr;
1233 ctx->name = "xgene_l3_err";
1234 ctx->edac_idx = edac_idx;
1236 ctx->edac_dev = edac_dev;
1237 ctx->ddev = *edac->dev;
1238 ctx->version = version;
1239 edac_dev->dev = &ctx->ddev;
1240 edac_dev->ctl_name = ctx->name;
1241 edac_dev->dev_name = ctx->name;
1242 edac_dev->mod_name = EDAC_MOD_STR;
1244 if (edac_op_state == EDAC_OPSTATE_POLL)
1245 edac_dev->edac_check = xgene_edac_l3_check;
1247 xgene_edac_l3_create_debugfs_nodes(edac_dev);
1249 rc = edac_device_add_device(edac_dev);
1251 dev_err(edac->dev, "failed edac_device_add_device()\n");
1256 if (edac_op_state == EDAC_OPSTATE_INT)
1257 edac_dev->op_state = OP_RUNNING_INTERRUPT;
1259 list_add(&ctx->next, &edac->l3s);
1261 xgene_edac_l3_hw_init(edac_dev, 1);
1263 devres_remove_group(edac->dev, xgene_edac_l3_add);
1265 dev_info(edac->dev, "X-Gene EDAC L3 registered\n");
1269 edac_device_free_ctl_info(edac_dev);
1271 devres_release_group(edac->dev, xgene_edac_l3_add);
1275 static int xgene_edac_l3_remove(struct xgene_edac_dev_ctx *l3)
1277 struct edac_device_ctl_info *edac_dev = l3->edac_dev;
1279 xgene_edac_l3_hw_init(edac_dev, 0);
1280 edac_device_del_device(l3->edac->dev);
1281 edac_device_free_ctl_info(edac_dev);
1285 /* SoC error device */
1286 #define IOBAXIS0TRANSERRINTSTS 0x0000
1287 #define IOBAXIS0_M_ILLEGAL_ACCESS_MASK BIT(1)
1288 #define IOBAXIS0_ILLEGAL_ACCESS_MASK BIT(0)
1289 #define IOBAXIS0TRANSERRINTMSK 0x0004
1290 #define IOBAXIS0TRANSERRREQINFOL 0x0008
1291 #define IOBAXIS0TRANSERRREQINFOH 0x000c
1292 #define REQTYPE_RD(src) (((src) & BIT(0)))
1293 #define ERRADDRH_RD(src) (((src) & 0xffc00000) >> 22)
1294 #define IOBAXIS1TRANSERRINTSTS 0x0010
1295 #define IOBAXIS1TRANSERRINTMSK 0x0014
1296 #define IOBAXIS1TRANSERRREQINFOL 0x0018
1297 #define IOBAXIS1TRANSERRREQINFOH 0x001c
1298 #define IOBPATRANSERRINTSTS 0x0020
1299 #define IOBPA_M_REQIDRAM_CORRUPT_MASK BIT(7)
1300 #define IOBPA_REQIDRAM_CORRUPT_MASK BIT(6)
1301 #define IOBPA_M_TRANS_CORRUPT_MASK BIT(5)
1302 #define IOBPA_TRANS_CORRUPT_MASK BIT(4)
1303 #define IOBPA_M_WDATA_CORRUPT_MASK BIT(3)
1304 #define IOBPA_WDATA_CORRUPT_MASK BIT(2)
1305 #define IOBPA_M_RDATA_CORRUPT_MASK BIT(1)
1306 #define IOBPA_RDATA_CORRUPT_MASK BIT(0)
1307 #define IOBBATRANSERRINTSTS 0x0030
1308 #define M_ILLEGAL_ACCESS_MASK BIT(15)
1309 #define ILLEGAL_ACCESS_MASK BIT(14)
1310 #define M_WIDRAM_CORRUPT_MASK BIT(13)
1311 #define WIDRAM_CORRUPT_MASK BIT(12)
1312 #define M_RIDRAM_CORRUPT_MASK BIT(11)
1313 #define RIDRAM_CORRUPT_MASK BIT(10)
1314 #define M_TRANS_CORRUPT_MASK BIT(9)
1315 #define TRANS_CORRUPT_MASK BIT(8)
1316 #define M_WDATA_CORRUPT_MASK BIT(7)
1317 #define WDATA_CORRUPT_MASK BIT(6)
1318 #define M_RBM_POISONED_REQ_MASK BIT(5)
1319 #define RBM_POISONED_REQ_MASK BIT(4)
1320 #define M_XGIC_POISONED_REQ_MASK BIT(3)
1321 #define XGIC_POISONED_REQ_MASK BIT(2)
1322 #define M_WRERR_RESP_MASK BIT(1)
1323 #define WRERR_RESP_MASK BIT(0)
1324 #define IOBBATRANSERRREQINFOL 0x0038
1325 #define IOBBATRANSERRREQINFOH 0x003c
1326 #define REQTYPE_F2_RD(src) ((src) & BIT(0))
1327 #define ERRADDRH_F2_RD(src) (((src) & 0xffc00000) >> 22)
1328 #define IOBBATRANSERRCSWREQID 0x0040
1329 #define XGICTRANSERRINTSTS 0x0050
1330 #define M_WR_ACCESS_ERR_MASK BIT(3)
1331 #define WR_ACCESS_ERR_MASK BIT(2)
1332 #define M_RD_ACCESS_ERR_MASK BIT(1)
1333 #define RD_ACCESS_ERR_MASK BIT(0)
1334 #define XGICTRANSERRINTMSK 0x0054
1335 #define XGICTRANSERRREQINFO 0x0058
1336 #define REQTYPE_MASK BIT(26)
1337 #define ERRADDR_RD(src) ((src) & 0x03ffffff)
1338 #define GLBL_ERR_STS 0x0800
1339 #define MDED_ERR_MASK BIT(3)
1340 #define DED_ERR_MASK BIT(2)
1341 #define MSEC_ERR_MASK BIT(1)
1342 #define SEC_ERR_MASK BIT(0)
1343 #define GLBL_SEC_ERRL 0x0810
1344 #define GLBL_SEC_ERRH 0x0818
1345 #define GLBL_MSEC_ERRL 0x0820
1346 #define GLBL_MSEC_ERRH 0x0828
1347 #define GLBL_DED_ERRL 0x0830
1348 #define GLBL_DED_ERRLMASK 0x0834
1349 #define GLBL_DED_ERRH 0x0838
1350 #define GLBL_DED_ERRHMASK 0x083c
1351 #define GLBL_MDED_ERRL 0x0840
1352 #define GLBL_MDED_ERRLMASK 0x0844
1353 #define GLBL_MDED_ERRH 0x0848
1354 #define GLBL_MDED_ERRHMASK 0x084c
1356 static const char * const soc_mem_err_v1[] = {
1391 static void xgene_edac_iob_gic_report(struct edac_device_ctl_info *edac_dev)
1393 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1399 /* GIC transaction error interrupt */
1400 reg = readl(ctx->dev_csr + XGICTRANSERRINTSTS);
1403 dev_err(edac_dev->dev, "XGIC transaction error\n");
1404 if (reg & RD_ACCESS_ERR_MASK)
1405 dev_err(edac_dev->dev, "XGIC read size error\n");
1406 if (reg & M_RD_ACCESS_ERR_MASK)
1407 dev_err(edac_dev->dev, "Multiple XGIC read size error\n");
1408 if (reg & WR_ACCESS_ERR_MASK)
1409 dev_err(edac_dev->dev, "XGIC write size error\n");
1410 if (reg & M_WR_ACCESS_ERR_MASK)
1411 dev_err(edac_dev->dev, "Multiple XGIC write size error\n");
1412 info = readl(ctx->dev_csr + XGICTRANSERRREQINFO);
1413 dev_err(edac_dev->dev, "XGIC %s access @ 0x%08X (0x%08X)\n",
1414 info & REQTYPE_MASK ? "read" : "write", ERRADDR_RD(info),
1416 writel(reg, ctx->dev_csr + XGICTRANSERRINTSTS);
1419 /* IOB memory error */
1420 reg = readl(ctx->dev_csr + GLBL_ERR_STS);
1423 if (reg & SEC_ERR_MASK) {
1424 err_addr_lo = readl(ctx->dev_csr + GLBL_SEC_ERRL);
1425 err_addr_hi = readl(ctx->dev_csr + GLBL_SEC_ERRH);
1426 dev_err(edac_dev->dev,
1427 "IOB single-bit correctable memory at 0x%08X.%08X error\n",
1428 err_addr_lo, err_addr_hi);
1429 writel(err_addr_lo, ctx->dev_csr + GLBL_SEC_ERRL);
1430 writel(err_addr_hi, ctx->dev_csr + GLBL_SEC_ERRH);
1432 if (reg & MSEC_ERR_MASK) {
1433 err_addr_lo = readl(ctx->dev_csr + GLBL_MSEC_ERRL);
1434 err_addr_hi = readl(ctx->dev_csr + GLBL_MSEC_ERRH);
1435 dev_err(edac_dev->dev,
1436 "IOB multiple single-bit correctable memory at 0x%08X.%08X error\n",
1437 err_addr_lo, err_addr_hi);
1438 writel(err_addr_lo, ctx->dev_csr + GLBL_MSEC_ERRL);
1439 writel(err_addr_hi, ctx->dev_csr + GLBL_MSEC_ERRH);
1441 if (reg & (SEC_ERR_MASK | MSEC_ERR_MASK))
1442 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
1444 if (reg & DED_ERR_MASK) {
1445 err_addr_lo = readl(ctx->dev_csr + GLBL_DED_ERRL);
1446 err_addr_hi = readl(ctx->dev_csr + GLBL_DED_ERRH);
1447 dev_err(edac_dev->dev,
1448 "IOB double-bit uncorrectable memory at 0x%08X.%08X error\n",
1449 err_addr_lo, err_addr_hi);
1450 writel(err_addr_lo, ctx->dev_csr + GLBL_DED_ERRL);
1451 writel(err_addr_hi, ctx->dev_csr + GLBL_DED_ERRH);
1453 if (reg & MDED_ERR_MASK) {
1454 err_addr_lo = readl(ctx->dev_csr + GLBL_MDED_ERRL);
1455 err_addr_hi = readl(ctx->dev_csr + GLBL_MDED_ERRH);
1456 dev_err(edac_dev->dev,
1457 "Multiple IOB double-bit uncorrectable memory at 0x%08X.%08X error\n",
1458 err_addr_lo, err_addr_hi);
1459 writel(err_addr_lo, ctx->dev_csr + GLBL_MDED_ERRL);
1460 writel(err_addr_hi, ctx->dev_csr + GLBL_MDED_ERRH);
1462 if (reg & (DED_ERR_MASK | MDED_ERR_MASK))
1463 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
1466 static void xgene_edac_rb_report(struct edac_device_ctl_info *edac_dev)
1468 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1473 /* IOB Bridge agent transaction error interrupt */
1474 reg = readl(ctx->dev_csr + IOBBATRANSERRINTSTS);
1478 dev_err(edac_dev->dev, "IOB bridge agent (BA) transaction error\n");
1479 if (reg & WRERR_RESP_MASK)
1480 dev_err(edac_dev->dev, "IOB BA write response error\n");
1481 if (reg & M_WRERR_RESP_MASK)
1482 dev_err(edac_dev->dev,
1483 "Multiple IOB BA write response error\n");
1484 if (reg & XGIC_POISONED_REQ_MASK)
1485 dev_err(edac_dev->dev, "IOB BA XGIC poisoned write error\n");
1486 if (reg & M_XGIC_POISONED_REQ_MASK)
1487 dev_err(edac_dev->dev,
1488 "Multiple IOB BA XGIC poisoned write error\n");
1489 if (reg & RBM_POISONED_REQ_MASK)
1490 dev_err(edac_dev->dev, "IOB BA RBM poisoned write error\n");
1491 if (reg & M_RBM_POISONED_REQ_MASK)
1492 dev_err(edac_dev->dev,
1493 "Multiple IOB BA RBM poisoned write error\n");
1494 if (reg & WDATA_CORRUPT_MASK)
1495 dev_err(edac_dev->dev, "IOB BA write error\n");
1496 if (reg & M_WDATA_CORRUPT_MASK)
1497 dev_err(edac_dev->dev, "Multiple IOB BA write error\n");
1498 if (reg & TRANS_CORRUPT_MASK)
1499 dev_err(edac_dev->dev, "IOB BA transaction error\n");
1500 if (reg & M_TRANS_CORRUPT_MASK)
1501 dev_err(edac_dev->dev, "Multiple IOB BA transaction error\n");
1502 if (reg & RIDRAM_CORRUPT_MASK)
1503 dev_err(edac_dev->dev,
1504 "IOB BA RDIDRAM read transaction ID error\n");
1505 if (reg & M_RIDRAM_CORRUPT_MASK)
1506 dev_err(edac_dev->dev,
1507 "Multiple IOB BA RDIDRAM read transaction ID error\n");
1508 if (reg & WIDRAM_CORRUPT_MASK)
1509 dev_err(edac_dev->dev,
1510 "IOB BA RDIDRAM write transaction ID error\n");
1511 if (reg & M_WIDRAM_CORRUPT_MASK)
1512 dev_err(edac_dev->dev,
1513 "Multiple IOB BA RDIDRAM write transaction ID error\n");
1514 if (reg & ILLEGAL_ACCESS_MASK)
1515 dev_err(edac_dev->dev,
1516 "IOB BA XGIC/RB illegal access error\n");
1517 if (reg & M_ILLEGAL_ACCESS_MASK)
1518 dev_err(edac_dev->dev,
1519 "Multiple IOB BA XGIC/RB illegal access error\n");
1521 err_addr_lo = readl(ctx->dev_csr + IOBBATRANSERRREQINFOL);
1522 err_addr_hi = readl(ctx->dev_csr + IOBBATRANSERRREQINFOH);
1523 dev_err(edac_dev->dev, "IOB BA %s access at 0x%02X.%08X (0x%08X)\n",
1524 REQTYPE_F2_RD(err_addr_hi) ? "read" : "write",
1525 ERRADDRH_F2_RD(err_addr_hi), err_addr_lo, err_addr_hi);
1526 if (reg & WRERR_RESP_MASK)
1527 dev_err(edac_dev->dev, "IOB BA requestor ID 0x%08X\n",
1528 readl(ctx->dev_csr + IOBBATRANSERRCSWREQID));
1529 writel(reg, ctx->dev_csr + IOBBATRANSERRINTSTS);
1532 static void xgene_edac_pa_report(struct edac_device_ctl_info *edac_dev)
1534 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1539 /* IOB Processing agent transaction error interrupt */
1540 reg = readl(ctx->dev_csr + IOBPATRANSERRINTSTS);
1543 dev_err(edac_dev->dev, "IOB procesing agent (PA) transaction error\n");
1544 if (reg & IOBPA_RDATA_CORRUPT_MASK)
1545 dev_err(edac_dev->dev, "IOB PA read data RAM error\n");
1546 if (reg & IOBPA_M_RDATA_CORRUPT_MASK)
1547 dev_err(edac_dev->dev,
1548 "Mutilple IOB PA read data RAM error\n");
1549 if (reg & IOBPA_WDATA_CORRUPT_MASK)
1550 dev_err(edac_dev->dev, "IOB PA write data RAM error\n");
1551 if (reg & IOBPA_M_WDATA_CORRUPT_MASK)
1552 dev_err(edac_dev->dev,
1553 "Mutilple IOB PA write data RAM error\n");
1554 if (reg & IOBPA_TRANS_CORRUPT_MASK)
1555 dev_err(edac_dev->dev, "IOB PA transaction error\n");
1556 if (reg & IOBPA_M_TRANS_CORRUPT_MASK)
1557 dev_err(edac_dev->dev, "Mutilple IOB PA transaction error\n");
1558 if (reg & IOBPA_REQIDRAM_CORRUPT_MASK)
1559 dev_err(edac_dev->dev, "IOB PA transaction ID RAM error\n");
1560 if (reg & IOBPA_M_REQIDRAM_CORRUPT_MASK)
1561 dev_err(edac_dev->dev,
1562 "Multiple IOB PA transaction ID RAM error\n");
1563 writel(reg, ctx->dev_csr + IOBPATRANSERRINTSTS);
1566 /* IOB AXI0 Error */
1567 reg = readl(ctx->dev_csr + IOBAXIS0TRANSERRINTSTS);
1570 err_addr_lo = readl(ctx->dev_csr + IOBAXIS0TRANSERRREQINFOL);
1571 err_addr_hi = readl(ctx->dev_csr + IOBAXIS0TRANSERRREQINFOH);
1572 dev_err(edac_dev->dev,
1573 "%sAXI slave 0 illegal %s access @ 0x%02X.%08X (0x%08X)\n",
1574 reg & IOBAXIS0_M_ILLEGAL_ACCESS_MASK ? "Multiple " : "",
1575 REQTYPE_RD(err_addr_hi) ? "read" : "write",
1576 ERRADDRH_RD(err_addr_hi), err_addr_lo, err_addr_hi);
1577 writel(reg, ctx->dev_csr + IOBAXIS0TRANSERRINTSTS);
1580 /* IOB AXI1 Error */
1581 reg = readl(ctx->dev_csr + IOBAXIS1TRANSERRINTSTS);
1584 err_addr_lo = readl(ctx->dev_csr + IOBAXIS1TRANSERRREQINFOL);
1585 err_addr_hi = readl(ctx->dev_csr + IOBAXIS1TRANSERRREQINFOH);
1586 dev_err(edac_dev->dev,
1587 "%sAXI slave 1 illegal %s access @ 0x%02X.%08X (0x%08X)\n",
1588 reg & IOBAXIS0_M_ILLEGAL_ACCESS_MASK ? "Multiple " : "",
1589 REQTYPE_RD(err_addr_hi) ? "read" : "write",
1590 ERRADDRH_RD(err_addr_hi), err_addr_lo, err_addr_hi);
1591 writel(reg, ctx->dev_csr + IOBAXIS1TRANSERRINTSTS);
1594 static void xgene_edac_soc_check(struct edac_device_ctl_info *edac_dev)
1596 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1597 const char * const *soc_mem_err = NULL;
1603 xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat);
1604 xgene_edac_pcp_rd(ctx->edac, PCPLPERRINTSTS, &pcp_lp_stat);
1605 xgene_edac_pcp_rd(ctx->edac, MEMERRINTSTS, ®);
1606 if (!((pcp_hp_stat & (IOB_PA_ERR_MASK | IOB_BA_ERR_MASK |
1607 IOB_XGIC_ERR_MASK | IOB_RB_ERR_MASK)) ||
1608 (pcp_lp_stat & CSW_SWITCH_TRACE_ERR_MASK) || reg))
1611 if (pcp_hp_stat & IOB_XGIC_ERR_MASK)
1612 xgene_edac_iob_gic_report(edac_dev);
1614 if (pcp_hp_stat & (IOB_RB_ERR_MASK | IOB_BA_ERR_MASK))
1615 xgene_edac_rb_report(edac_dev);
1617 if (pcp_hp_stat & IOB_PA_ERR_MASK)
1618 xgene_edac_pa_report(edac_dev);
1620 if (pcp_lp_stat & CSW_SWITCH_TRACE_ERR_MASK) {
1621 dev_info(edac_dev->dev,
1622 "CSW switch trace correctable memory parity error\n");
1623 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
1628 if (ctx->version == 1)
1629 soc_mem_err = soc_mem_err_v1;
1631 dev_err(edac_dev->dev, "SoC memory parity error 0x%08X\n",
1633 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
1636 for (i = 0; i < 31; i++) {
1637 if (reg & (1 << i)) {
1638 dev_err(edac_dev->dev, "%s memory parity error\n",
1640 edac_device_handle_ue(edac_dev, 0, 0,
1641 edac_dev->ctl_name);
1646 static void xgene_edac_soc_hw_init(struct edac_device_ctl_info *edac_dev,
1649 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1651 /* Enable SoC IP error interrupt */
1652 if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
1654 xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
1659 xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
1660 CSW_SWITCH_TRACE_ERR_MASK);
1662 xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
1667 xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
1668 CSW_SWITCH_TRACE_ERR_MASK);
1671 writel(enable ? 0x0 : 0xFFFFFFFF,
1672 ctx->dev_csr + IOBAXIS0TRANSERRINTMSK);
1673 writel(enable ? 0x0 : 0xFFFFFFFF,
1674 ctx->dev_csr + IOBAXIS1TRANSERRINTMSK);
1675 writel(enable ? 0x0 : 0xFFFFFFFF,
1676 ctx->dev_csr + XGICTRANSERRINTMSK);
1678 xgene_edac_pcp_setbits(ctx->edac, MEMERRINTMSK,
1679 enable ? 0x0 : 0xFFFFFFFF);
1683 static int xgene_edac_soc_add(struct xgene_edac *edac, struct device_node *np,
1686 struct edac_device_ctl_info *edac_dev;
1687 struct xgene_edac_dev_ctx *ctx;
1688 void __iomem *dev_csr;
1689 struct resource res;
1693 if (!devres_open_group(edac->dev, xgene_edac_soc_add, GFP_KERNEL))
1696 rc = of_address_to_resource(np, 0, &res);
1698 dev_err(edac->dev, "no SoC resource address\n");
1699 goto err_release_group;
1701 dev_csr = devm_ioremap_resource(edac->dev, &res);
1702 if (IS_ERR(dev_csr)) {
1704 "devm_ioremap_resource failed for soc resource address\n");
1705 rc = PTR_ERR(dev_csr);
1706 goto err_release_group;
1709 edac_idx = edac_device_alloc_index();
1710 edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
1711 "SOC", 1, "SOC", 1, 2, NULL, 0,
1715 goto err_release_group;
1718 ctx = edac_dev->pvt_info;
1719 ctx->dev_csr = dev_csr;
1720 ctx->name = "xgene_soc_err";
1721 ctx->edac_idx = edac_idx;
1723 ctx->edac_dev = edac_dev;
1724 ctx->ddev = *edac->dev;
1725 ctx->version = version;
1726 edac_dev->dev = &ctx->ddev;
1727 edac_dev->ctl_name = ctx->name;
1728 edac_dev->dev_name = ctx->name;
1729 edac_dev->mod_name = EDAC_MOD_STR;
1731 if (edac_op_state == EDAC_OPSTATE_POLL)
1732 edac_dev->edac_check = xgene_edac_soc_check;
1734 rc = edac_device_add_device(edac_dev);
1736 dev_err(edac->dev, "failed edac_device_add_device()\n");
1741 if (edac_op_state == EDAC_OPSTATE_INT)
1742 edac_dev->op_state = OP_RUNNING_INTERRUPT;
1744 list_add(&ctx->next, &edac->socs);
1746 xgene_edac_soc_hw_init(edac_dev, 1);
1748 devres_remove_group(edac->dev, xgene_edac_soc_add);
1750 dev_info(edac->dev, "X-Gene EDAC SoC registered\n");
1755 edac_device_free_ctl_info(edac_dev);
1757 devres_release_group(edac->dev, xgene_edac_soc_add);
1761 static int xgene_edac_soc_remove(struct xgene_edac_dev_ctx *soc)
1763 struct edac_device_ctl_info *edac_dev = soc->edac_dev;
1765 xgene_edac_soc_hw_init(edac_dev, 0);
1766 edac_device_del_device(soc->edac->dev);
1767 edac_device_free_ctl_info(edac_dev);
1771 static irqreturn_t xgene_edac_isr(int irq, void *dev_id)
1773 struct xgene_edac *ctx = dev_id;
1774 struct xgene_edac_pmd_ctx *pmd;
1775 struct xgene_edac_dev_ctx *node;
1776 unsigned int pcp_hp_stat;
1777 unsigned int pcp_lp_stat;
1779 xgene_edac_pcp_rd(ctx, PCPHPERRINTSTS, &pcp_hp_stat);
1780 xgene_edac_pcp_rd(ctx, PCPLPERRINTSTS, &pcp_lp_stat);
1781 if ((MCU_UNCORR_ERR_MASK & pcp_hp_stat) ||
1782 (MCU_CTL_ERR_MASK & pcp_hp_stat) ||
1783 (MCU_CORR_ERR_MASK & pcp_lp_stat)) {
1784 struct xgene_edac_mc_ctx *mcu;
1786 list_for_each_entry(mcu, &ctx->mcus, next)
1787 xgene_edac_mc_check(mcu->mci);
1790 list_for_each_entry(pmd, &ctx->pmds, next) {
1791 if ((PMD0_MERR_MASK << pmd->pmd) & pcp_hp_stat)
1792 xgene_edac_pmd_check(pmd->edac_dev);
1795 list_for_each_entry(node, &ctx->l3s, next)
1796 xgene_edac_l3_check(node->edac_dev);
1798 list_for_each_entry(node, &ctx->socs, next)
1799 xgene_edac_soc_check(node->edac_dev);
1804 static int xgene_edac_probe(struct platform_device *pdev)
1806 struct xgene_edac *edac;
1807 struct device_node *child;
1808 struct resource *res;
1811 edac = devm_kzalloc(&pdev->dev, sizeof(*edac), GFP_KERNEL);
1815 edac->dev = &pdev->dev;
1816 platform_set_drvdata(pdev, edac);
1817 INIT_LIST_HEAD(&edac->mcus);
1818 INIT_LIST_HEAD(&edac->pmds);
1819 INIT_LIST_HEAD(&edac->l3s);
1820 INIT_LIST_HEAD(&edac->socs);
1821 spin_lock_init(&edac->lock);
1822 mutex_init(&edac->mc_lock);
1824 edac->csw_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1826 if (IS_ERR(edac->csw_map)) {
1827 dev_err(edac->dev, "unable to get syscon regmap csw\n");
1828 rc = PTR_ERR(edac->csw_map);
1832 edac->mcba_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1834 if (IS_ERR(edac->mcba_map)) {
1835 dev_err(edac->dev, "unable to get syscon regmap mcba\n");
1836 rc = PTR_ERR(edac->mcba_map);
1840 edac->mcbb_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1842 if (IS_ERR(edac->mcbb_map)) {
1843 dev_err(edac->dev, "unable to get syscon regmap mcbb\n");
1844 rc = PTR_ERR(edac->mcbb_map);
1847 edac->efuse_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1849 if (IS_ERR(edac->efuse_map)) {
1850 dev_err(edac->dev, "unable to get syscon regmap efuse\n");
1851 rc = PTR_ERR(edac->efuse_map);
1855 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1856 edac->pcp_csr = devm_ioremap_resource(&pdev->dev, res);
1857 if (IS_ERR(edac->pcp_csr)) {
1858 dev_err(&pdev->dev, "no PCP resource address\n");
1859 rc = PTR_ERR(edac->pcp_csr);
1863 if (edac_op_state == EDAC_OPSTATE_INT) {
1867 for (i = 0; i < 3; i++) {
1868 irq = platform_get_irq(pdev, i);
1870 dev_err(&pdev->dev, "No IRQ resource\n");
1874 rc = devm_request_irq(&pdev->dev, irq,
1875 xgene_edac_isr, IRQF_SHARED,
1876 dev_name(&pdev->dev), edac);
1879 "Could not request IRQ %d\n", irq);
1885 edac->dfs = edac_debugfs_create_dir(pdev->dev.kobj.name);
1887 for_each_child_of_node(pdev->dev.of_node, child) {
1888 if (!of_device_is_available(child))
1890 if (of_device_is_compatible(child, "apm,xgene-edac-mc"))
1891 xgene_edac_mc_add(edac, child);
1892 if (of_device_is_compatible(child, "apm,xgene-edac-pmd"))
1893 xgene_edac_pmd_add(edac, child, 1);
1894 if (of_device_is_compatible(child, "apm,xgene-edac-pmd-v2"))
1895 xgene_edac_pmd_add(edac, child, 2);
1896 if (of_device_is_compatible(child, "apm,xgene-edac-l3"))
1897 xgene_edac_l3_add(edac, child, 1);
1898 if (of_device_is_compatible(child, "apm,xgene-edac-l3-v2"))
1899 xgene_edac_l3_add(edac, child, 2);
1900 if (of_device_is_compatible(child, "apm,xgene-edac-soc"))
1901 xgene_edac_soc_add(edac, child, 0);
1902 if (of_device_is_compatible(child, "apm,xgene-edac-soc-v1"))
1903 xgene_edac_soc_add(edac, child, 1);
1912 static int xgene_edac_remove(struct platform_device *pdev)
1914 struct xgene_edac *edac = dev_get_drvdata(&pdev->dev);
1915 struct xgene_edac_mc_ctx *mcu;
1916 struct xgene_edac_mc_ctx *temp_mcu;
1917 struct xgene_edac_pmd_ctx *pmd;
1918 struct xgene_edac_pmd_ctx *temp_pmd;
1919 struct xgene_edac_dev_ctx *node;
1920 struct xgene_edac_dev_ctx *temp_node;
1922 list_for_each_entry_safe(mcu, temp_mcu, &edac->mcus, next)
1923 xgene_edac_mc_remove(mcu);
1925 list_for_each_entry_safe(pmd, temp_pmd, &edac->pmds, next)
1926 xgene_edac_pmd_remove(pmd);
1928 list_for_each_entry_safe(node, temp_node, &edac->l3s, next)
1929 xgene_edac_l3_remove(node);
1931 list_for_each_entry_safe(node, temp_node, &edac->socs, next)
1932 xgene_edac_soc_remove(node);
1937 static const struct of_device_id xgene_edac_of_match[] = {
1938 { .compatible = "apm,xgene-edac" },
1941 MODULE_DEVICE_TABLE(of, xgene_edac_of_match);
1943 static struct platform_driver xgene_edac_driver = {
1944 .probe = xgene_edac_probe,
1945 .remove = xgene_edac_remove,
1947 .name = "xgene-edac",
1948 .of_match_table = xgene_edac_of_match,
1952 static int __init xgene_edac_init(void)
1956 /* Make sure error reporting method is sane */
1957 switch (edac_op_state) {
1958 case EDAC_OPSTATE_POLL:
1959 case EDAC_OPSTATE_INT:
1962 edac_op_state = EDAC_OPSTATE_INT;
1966 rc = platform_driver_register(&xgene_edac_driver);
1968 edac_printk(KERN_ERR, EDAC_MOD_STR,
1969 "EDAC fails to register\n");
1978 module_init(xgene_edac_init);
1980 static void __exit xgene_edac_exit(void)
1982 platform_driver_unregister(&xgene_edac_driver);
1984 module_exit(xgene_edac_exit);
1986 MODULE_LICENSE("GPL");
1987 MODULE_AUTHOR("Feng Kan <fkan@apm.com>");
1988 MODULE_DESCRIPTION("APM X-Gene EDAC driver");
1989 module_param(edac_op_state, int, 0444);
1990 MODULE_PARM_DESC(edac_op_state,
1991 "EDAC error reporting state: 0=Poll, 2=Interrupt");