1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * APM X-Gene SoC EDAC (error detection and correction)
5 * Copyright (c) 2015, Applied Micro Circuits Corporation
6 * Author: Feng Kan <fkan@apm.com>
10 #include <linux/ctype.h>
11 #include <linux/edac.h>
12 #include <linux/interrupt.h>
13 #include <linux/mfd/syscon.h>
14 #include <linux/module.h>
16 #include <linux/of_address.h>
17 #include <linux/regmap.h>
19 #include "edac_module.h"
21 #define EDAC_MOD_STR "xgene_edac"
23 /* Global error configuration status registers (CSR) */
24 #define PCPHPERRINTSTS 0x0000
25 #define PCPHPERRINTMSK 0x0004
26 #define MCU_CTL_ERR_MASK BIT(12)
27 #define IOB_PA_ERR_MASK BIT(11)
28 #define IOB_BA_ERR_MASK BIT(10)
29 #define IOB_XGIC_ERR_MASK BIT(9)
30 #define IOB_RB_ERR_MASK BIT(8)
31 #define L3C_UNCORR_ERR_MASK BIT(5)
32 #define MCU_UNCORR_ERR_MASK BIT(4)
33 #define PMD3_MERR_MASK BIT(3)
34 #define PMD2_MERR_MASK BIT(2)
35 #define PMD1_MERR_MASK BIT(1)
36 #define PMD0_MERR_MASK BIT(0)
37 #define PCPLPERRINTSTS 0x0008
38 #define PCPLPERRINTMSK 0x000C
39 #define CSW_SWITCH_TRACE_ERR_MASK BIT(2)
40 #define L3C_CORR_ERR_MASK BIT(1)
41 #define MCU_CORR_ERR_MASK BIT(0)
42 #define MEMERRINTSTS 0x0010
43 #define MEMERRINTMSK 0x0014
47 struct regmap *csw_map;
48 struct regmap *mcba_map;
49 struct regmap *mcbb_map;
50 struct regmap *efuse_map;
51 struct regmap *rb_map;
52 void __iomem *pcp_csr;
56 struct list_head mcus;
57 struct list_head pmds;
59 struct list_head socs;
63 int mc_registered_mask;
66 static void xgene_edac_pcp_rd(struct xgene_edac *edac, u32 reg, u32 *val)
68 *val = readl(edac->pcp_csr + reg);
71 static void xgene_edac_pcp_clrbits(struct xgene_edac *edac, u32 reg,
76 spin_lock(&edac->lock);
77 val = readl(edac->pcp_csr + reg);
79 writel(val, edac->pcp_csr + reg);
80 spin_unlock(&edac->lock);
83 static void xgene_edac_pcp_setbits(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 /* Memory controller error CSR */
96 #define MCU_MAX_RANK 8
97 #define MCU_RANK_STRIDE 0x40
99 #define MCUGECR 0x0110
100 #define MCU_GECR_DEMANDUCINTREN_MASK BIT(0)
101 #define MCU_GECR_BACKUCINTREN_MASK BIT(1)
102 #define MCU_GECR_CINTREN_MASK BIT(2)
103 #define MUC_GECR_MCUADDRERREN_MASK BIT(9)
104 #define MCUGESR 0x0114
105 #define MCU_GESR_ADDRNOMATCH_ERR_MASK BIT(7)
106 #define MCU_GESR_ADDRMULTIMATCH_ERR_MASK BIT(6)
107 #define MCU_GESR_PHYP_ERR_MASK BIT(3)
108 #define MCUESRR0 0x0314
109 #define MCU_ESRR_MULTUCERR_MASK BIT(3)
110 #define MCU_ESRR_BACKUCERR_MASK BIT(2)
111 #define MCU_ESRR_DEMANDUCERR_MASK BIT(1)
112 #define MCU_ESRR_CERR_MASK BIT(0)
113 #define MCUESRRA0 0x0318
114 #define MCUEBLRR0 0x031c
115 #define MCU_EBLRR_ERRBANK_RD(src) (((src) & 0x00000007) >> 0)
116 #define MCUERCRR0 0x0320
117 #define MCU_ERCRR_ERRROW_RD(src) (((src) & 0xFFFF0000) >> 16)
118 #define MCU_ERCRR_ERRCOL_RD(src) ((src) & 0x00000FFF)
119 #define MCUSBECNT0 0x0324
120 #define MCU_SBECNT_COUNT(src) ((src) & 0xFFFF)
122 #define CSW_CSWCR 0x0000
123 #define CSW_CSWCR_DUALMCB_MASK BIT(0)
125 #define MCBADDRMR 0x0000
126 #define MCBADDRMR_MCU_INTLV_MODE_MASK BIT(3)
127 #define MCBADDRMR_DUALMCU_MODE_MASK BIT(2)
128 #define MCBADDRMR_MCB_INTLV_MODE_MASK BIT(1)
129 #define MCBADDRMR_ADDRESS_MODE_MASK BIT(0)
131 struct xgene_edac_mc_ctx {
132 struct list_head next;
134 struct mem_ctl_info *mci;
135 struct xgene_edac *edac;
136 void __iomem *mcu_csr;
140 static ssize_t xgene_edac_mc_err_inject_write(struct file *file,
141 const char __user *data,
142 size_t count, loff_t *ppos)
144 struct mem_ctl_info *mci = file->private_data;
145 struct xgene_edac_mc_ctx *ctx = mci->pvt_info;
148 for (i = 0; i < MCU_MAX_RANK; i++) {
149 writel(MCU_ESRR_MULTUCERR_MASK | MCU_ESRR_BACKUCERR_MASK |
150 MCU_ESRR_DEMANDUCERR_MASK | MCU_ESRR_CERR_MASK,
151 ctx->mcu_csr + MCUESRRA0 + i * MCU_RANK_STRIDE);
156 static const struct file_operations xgene_edac_mc_debug_inject_fops = {
158 .write = xgene_edac_mc_err_inject_write,
159 .llseek = generic_file_llseek,
162 static void xgene_edac_mc_create_debugfs_node(struct mem_ctl_info *mci)
164 if (!IS_ENABLED(CONFIG_EDAC_DEBUG))
170 edac_debugfs_create_file("inject_ctrl", S_IWUSR, mci->debugfs, mci,
171 &xgene_edac_mc_debug_inject_fops);
174 static void xgene_edac_mc_check(struct mem_ctl_info *mci)
176 struct xgene_edac_mc_ctx *ctx = mci->pvt_info;
177 unsigned int pcp_hp_stat;
178 unsigned int pcp_lp_stat;
185 xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat);
186 xgene_edac_pcp_rd(ctx->edac, PCPLPERRINTSTS, &pcp_lp_stat);
187 if (!((MCU_UNCORR_ERR_MASK & pcp_hp_stat) ||
188 (MCU_CTL_ERR_MASK & pcp_hp_stat) ||
189 (MCU_CORR_ERR_MASK & pcp_lp_stat)))
192 for (rank = 0; rank < MCU_MAX_RANK; rank++) {
193 reg = readl(ctx->mcu_csr + MCUESRR0 + rank * MCU_RANK_STRIDE);
195 /* Detect uncorrectable memory error */
196 if (reg & (MCU_ESRR_DEMANDUCERR_MASK |
197 MCU_ESRR_BACKUCERR_MASK)) {
198 /* Detected uncorrectable memory error */
199 edac_mc_chipset_printk(mci, KERN_ERR, "X-Gene",
200 "MCU uncorrectable error at rank %d\n", rank);
202 edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci,
203 1, 0, 0, 0, 0, 0, -1, mci->ctl_name, "");
206 /* Detect correctable memory error */
207 if (reg & MCU_ESRR_CERR_MASK) {
208 bank = readl(ctx->mcu_csr + MCUEBLRR0 +
209 rank * MCU_RANK_STRIDE);
210 col_row = readl(ctx->mcu_csr + MCUERCRR0 +
211 rank * MCU_RANK_STRIDE);
212 count = readl(ctx->mcu_csr + MCUSBECNT0 +
213 rank * MCU_RANK_STRIDE);
214 edac_mc_chipset_printk(mci, KERN_WARNING, "X-Gene",
215 "MCU correctable error at rank %d bank %d column %d row %d count %d\n",
216 rank, MCU_EBLRR_ERRBANK_RD(bank),
217 MCU_ERCRR_ERRCOL_RD(col_row),
218 MCU_ERCRR_ERRROW_RD(col_row),
219 MCU_SBECNT_COUNT(count));
221 edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci,
222 1, 0, 0, 0, 0, 0, -1, mci->ctl_name, "");
225 /* Clear all error registers */
226 writel(0x0, ctx->mcu_csr + MCUEBLRR0 + rank * MCU_RANK_STRIDE);
227 writel(0x0, ctx->mcu_csr + MCUERCRR0 + rank * MCU_RANK_STRIDE);
228 writel(0x0, ctx->mcu_csr + MCUSBECNT0 +
229 rank * MCU_RANK_STRIDE);
230 writel(reg, ctx->mcu_csr + MCUESRR0 + rank * MCU_RANK_STRIDE);
233 /* Detect memory controller error */
234 reg = readl(ctx->mcu_csr + MCUGESR);
236 if (reg & MCU_GESR_ADDRNOMATCH_ERR_MASK)
237 edac_mc_chipset_printk(mci, KERN_WARNING, "X-Gene",
238 "MCU address miss-match error\n");
239 if (reg & MCU_GESR_ADDRMULTIMATCH_ERR_MASK)
240 edac_mc_chipset_printk(mci, KERN_WARNING, "X-Gene",
241 "MCU address multi-match error\n");
243 writel(reg, ctx->mcu_csr + MCUGESR);
247 static void xgene_edac_mc_irq_ctl(struct mem_ctl_info *mci, bool enable)
249 struct xgene_edac_mc_ctx *ctx = mci->pvt_info;
252 if (edac_op_state != EDAC_OPSTATE_INT)
255 mutex_lock(&ctx->edac->mc_lock);
258 * As there is only single bit for enable error and interrupt mask,
259 * we must only enable top level interrupt after all MCUs are
260 * registered. Otherwise, if there is an error and the corresponding
261 * MCU has not registered, the interrupt will never get cleared. To
262 * determine all MCU have registered, we will keep track of active
263 * MCUs and registered MCUs.
266 /* Set registered MCU bit */
267 ctx->edac->mc_registered_mask |= 1 << ctx->mcu_id;
269 /* Enable interrupt after all active MCU registered */
270 if (ctx->edac->mc_registered_mask ==
271 ctx->edac->mc_active_mask) {
272 /* Enable memory controller top level interrupt */
273 xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
274 MCU_UNCORR_ERR_MASK |
276 xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
280 /* Enable MCU interrupt and error reporting */
281 val = readl(ctx->mcu_csr + MCUGECR);
282 val |= MCU_GECR_DEMANDUCINTREN_MASK |
283 MCU_GECR_BACKUCINTREN_MASK |
284 MCU_GECR_CINTREN_MASK |
285 MUC_GECR_MCUADDRERREN_MASK;
286 writel(val, ctx->mcu_csr + MCUGECR);
288 /* Disable MCU interrupt */
289 val = readl(ctx->mcu_csr + MCUGECR);
290 val &= ~(MCU_GECR_DEMANDUCINTREN_MASK |
291 MCU_GECR_BACKUCINTREN_MASK |
292 MCU_GECR_CINTREN_MASK |
293 MUC_GECR_MCUADDRERREN_MASK);
294 writel(val, ctx->mcu_csr + MCUGECR);
296 /* Disable memory controller top level interrupt */
297 xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
298 MCU_UNCORR_ERR_MASK | MCU_CTL_ERR_MASK);
299 xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
302 /* Clear registered MCU bit */
303 ctx->edac->mc_registered_mask &= ~(1 << ctx->mcu_id);
306 mutex_unlock(&ctx->edac->mc_lock);
309 static int xgene_edac_mc_is_active(struct xgene_edac_mc_ctx *ctx, int mc_idx)
314 if (regmap_read(ctx->edac->csw_map, CSW_CSWCR, ®))
317 if (reg & CSW_CSWCR_DUALMCB_MASK) {
319 * Dual MCB active - Determine if all 4 active or just MCU0
322 if (regmap_read(ctx->edac->mcbb_map, MCBADDRMR, ®))
324 mcu_mask = (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0xF : 0x5;
327 * Single MCB active - Determine if MCU0/MCU1 or just MCU0
330 if (regmap_read(ctx->edac->mcba_map, MCBADDRMR, ®))
332 mcu_mask = (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0x3 : 0x1;
335 /* Save active MC mask if hasn't set already */
336 if (!ctx->edac->mc_active_mask)
337 ctx->edac->mc_active_mask = mcu_mask;
339 return (mcu_mask & (1 << mc_idx)) ? 1 : 0;
342 static int xgene_edac_mc_add(struct xgene_edac *edac, struct device_node *np)
344 struct mem_ctl_info *mci;
345 struct edac_mc_layer layers[2];
346 struct xgene_edac_mc_ctx tmp_ctx;
347 struct xgene_edac_mc_ctx *ctx;
351 memset(&tmp_ctx, 0, sizeof(tmp_ctx));
354 if (!devres_open_group(edac->dev, xgene_edac_mc_add, GFP_KERNEL))
357 rc = of_address_to_resource(np, 0, &res);
359 dev_err(edac->dev, "no MCU resource address\n");
362 tmp_ctx.mcu_csr = devm_ioremap_resource(edac->dev, &res);
363 if (IS_ERR(tmp_ctx.mcu_csr)) {
364 dev_err(edac->dev, "unable to map MCU resource\n");
365 rc = PTR_ERR(tmp_ctx.mcu_csr);
369 /* Ignore non-active MCU */
370 if (of_property_read_u32(np, "memory-controller", &tmp_ctx.mcu_id)) {
371 dev_err(edac->dev, "no memory-controller property\n");
375 if (!xgene_edac_mc_is_active(&tmp_ctx, tmp_ctx.mcu_id)) {
380 layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
382 layers[0].is_virt_csrow = true;
383 layers[1].type = EDAC_MC_LAYER_CHANNEL;
385 layers[1].is_virt_csrow = false;
386 mci = edac_mc_alloc(tmp_ctx.mcu_id, ARRAY_SIZE(layers), layers,
394 *ctx = tmp_ctx; /* Copy over resource value */
395 ctx->name = "xgene_edac_mc_err";
397 mci->pdev = &mci->dev;
398 mci->ctl_name = ctx->name;
399 mci->dev_name = ctx->name;
401 mci->mtype_cap = MEM_FLAG_RDDR | MEM_FLAG_RDDR2 | MEM_FLAG_RDDR3 |
402 MEM_FLAG_DDR | MEM_FLAG_DDR2 | MEM_FLAG_DDR3;
403 mci->edac_ctl_cap = EDAC_FLAG_SECDED;
404 mci->edac_cap = EDAC_FLAG_SECDED;
405 mci->mod_name = EDAC_MOD_STR;
406 mci->ctl_page_to_phys = NULL;
407 mci->scrub_cap = SCRUB_FLAG_HW_SRC;
408 mci->scrub_mode = SCRUB_HW_SRC;
410 if (edac_op_state == EDAC_OPSTATE_POLL)
411 mci->edac_check = xgene_edac_mc_check;
413 if (edac_mc_add_mc(mci)) {
414 dev_err(edac->dev, "edac_mc_add_mc failed\n");
419 xgene_edac_mc_create_debugfs_node(mci);
421 list_add(&ctx->next, &edac->mcus);
423 xgene_edac_mc_irq_ctl(mci, true);
425 devres_remove_group(edac->dev, xgene_edac_mc_add);
427 dev_info(edac->dev, "X-Gene EDAC MC registered\n");
433 devres_release_group(edac->dev, xgene_edac_mc_add);
437 static int xgene_edac_mc_remove(struct xgene_edac_mc_ctx *mcu)
439 xgene_edac_mc_irq_ctl(mcu->mci, false);
440 edac_mc_del_mc(&mcu->mci->dev);
441 edac_mc_free(mcu->mci);
445 /* CPU L1/L2 error CSR */
446 #define MAX_CPU_PER_PMD 2
447 #define CPU_CSR_STRIDE 0x00100000
448 #define CPU_L2C_PAGE 0x000D0000
449 #define CPU_MEMERR_L2C_PAGE 0x000E0000
450 #define CPU_MEMERR_CPU_PAGE 0x000F0000
452 #define MEMERR_CPU_ICFECR_PAGE_OFFSET 0x0000
453 #define MEMERR_CPU_ICFESR_PAGE_OFFSET 0x0004
454 #define MEMERR_CPU_ICFESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24)
455 #define MEMERR_CPU_ICFESR_ERRINDEX_RD(src) (((src) & 0x003F0000) >> 16)
456 #define MEMERR_CPU_ICFESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8)
457 #define MEMERR_CPU_ICFESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4)
458 #define MEMERR_CPU_ICFESR_MULTCERR_MASK BIT(2)
459 #define MEMERR_CPU_ICFESR_CERR_MASK BIT(0)
460 #define MEMERR_CPU_LSUESR_PAGE_OFFSET 0x000c
461 #define MEMERR_CPU_LSUESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24)
462 #define MEMERR_CPU_LSUESR_ERRINDEX_RD(src) (((src) & 0x003F0000) >> 16)
463 #define MEMERR_CPU_LSUESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8)
464 #define MEMERR_CPU_LSUESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4)
465 #define MEMERR_CPU_LSUESR_MULTCERR_MASK BIT(2)
466 #define MEMERR_CPU_LSUESR_CERR_MASK BIT(0)
467 #define MEMERR_CPU_LSUECR_PAGE_OFFSET 0x0008
468 #define MEMERR_CPU_MMUECR_PAGE_OFFSET 0x0010
469 #define MEMERR_CPU_MMUESR_PAGE_OFFSET 0x0014
470 #define MEMERR_CPU_MMUESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24)
471 #define MEMERR_CPU_MMUESR_ERRINDEX_RD(src) (((src) & 0x007F0000) >> 16)
472 #define MEMERR_CPU_MMUESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8)
473 #define MEMERR_CPU_MMUESR_ERRREQSTR_LSU_MASK BIT(7)
474 #define MEMERR_CPU_MMUESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4)
475 #define MEMERR_CPU_MMUESR_MULTCERR_MASK BIT(2)
476 #define MEMERR_CPU_MMUESR_CERR_MASK BIT(0)
477 #define MEMERR_CPU_ICFESRA_PAGE_OFFSET 0x0804
478 #define MEMERR_CPU_LSUESRA_PAGE_OFFSET 0x080c
479 #define MEMERR_CPU_MMUESRA_PAGE_OFFSET 0x0814
481 #define MEMERR_L2C_L2ECR_PAGE_OFFSET 0x0000
482 #define MEMERR_L2C_L2ESR_PAGE_OFFSET 0x0004
483 #define MEMERR_L2C_L2ESR_ERRSYN_RD(src) (((src) & 0xFF000000) >> 24)
484 #define MEMERR_L2C_L2ESR_ERRWAY_RD(src) (((src) & 0x00FC0000) >> 18)
485 #define MEMERR_L2C_L2ESR_ERRCPU_RD(src) (((src) & 0x00020000) >> 17)
486 #define MEMERR_L2C_L2ESR_ERRGROUP_RD(src) (((src) & 0x0000E000) >> 13)
487 #define MEMERR_L2C_L2ESR_ERRACTION_RD(src) (((src) & 0x00001C00) >> 10)
488 #define MEMERR_L2C_L2ESR_ERRTYPE_RD(src) (((src) & 0x00000300) >> 8)
489 #define MEMERR_L2C_L2ESR_MULTUCERR_MASK BIT(3)
490 #define MEMERR_L2C_L2ESR_MULTICERR_MASK BIT(2)
491 #define MEMERR_L2C_L2ESR_UCERR_MASK BIT(1)
492 #define MEMERR_L2C_L2ESR_ERR_MASK BIT(0)
493 #define MEMERR_L2C_L2EALR_PAGE_OFFSET 0x0008
494 #define CPUX_L2C_L2RTOCR_PAGE_OFFSET 0x0010
495 #define MEMERR_L2C_L2EAHR_PAGE_OFFSET 0x000c
496 #define CPUX_L2C_L2RTOSR_PAGE_OFFSET 0x0014
497 #define MEMERR_L2C_L2RTOSR_MULTERR_MASK BIT(1)
498 #define MEMERR_L2C_L2RTOSR_ERR_MASK BIT(0)
499 #define CPUX_L2C_L2RTOALR_PAGE_OFFSET 0x0018
500 #define CPUX_L2C_L2RTOAHR_PAGE_OFFSET 0x001c
501 #define MEMERR_L2C_L2ESRA_PAGE_OFFSET 0x0804
504 * Processor Module Domain (PMD) context - Context for a pair of processsors.
505 * Each PMD consists of 2 CPUs and a shared L2 cache. Each CPU consists of
508 struct xgene_edac_pmd_ctx {
509 struct list_head next;
512 struct xgene_edac *edac;
513 struct edac_device_ctl_info *edac_dev;
514 void __iomem *pmd_csr;
519 static void xgene_edac_pmd_l1_check(struct edac_device_ctl_info *edac_dev,
522 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
526 pg_f = ctx->pmd_csr + cpu_idx * CPU_CSR_STRIDE + CPU_MEMERR_CPU_PAGE;
528 val = readl(pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET);
531 dev_err(edac_dev->dev,
532 "CPU%d L1 memory error ICF 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n",
533 ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val,
534 MEMERR_CPU_ICFESR_ERRWAY_RD(val),
535 MEMERR_CPU_ICFESR_ERRINDEX_RD(val),
536 MEMERR_CPU_ICFESR_ERRINFO_RD(val));
537 if (val & MEMERR_CPU_ICFESR_CERR_MASK)
538 dev_err(edac_dev->dev, "One or more correctable error\n");
539 if (val & MEMERR_CPU_ICFESR_MULTCERR_MASK)
540 dev_err(edac_dev->dev, "Multiple correctable error\n");
541 switch (MEMERR_CPU_ICFESR_ERRTYPE_RD(val)) {
543 dev_err(edac_dev->dev, "L1 TLB multiple hit\n");
546 dev_err(edac_dev->dev, "Way select multiple hit\n");
549 dev_err(edac_dev->dev, "Physical tag parity error\n");
553 dev_err(edac_dev->dev, "L1 data parity error\n");
556 dev_err(edac_dev->dev, "L1 pre-decode parity error\n");
560 /* Clear any HW errors */
561 writel(val, pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET);
563 if (val & (MEMERR_CPU_ICFESR_CERR_MASK |
564 MEMERR_CPU_ICFESR_MULTCERR_MASK))
565 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
568 val = readl(pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET);
571 dev_err(edac_dev->dev,
572 "CPU%d memory error LSU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n",
573 ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val,
574 MEMERR_CPU_LSUESR_ERRWAY_RD(val),
575 MEMERR_CPU_LSUESR_ERRINDEX_RD(val),
576 MEMERR_CPU_LSUESR_ERRINFO_RD(val));
577 if (val & MEMERR_CPU_LSUESR_CERR_MASK)
578 dev_err(edac_dev->dev, "One or more correctable error\n");
579 if (val & MEMERR_CPU_LSUESR_MULTCERR_MASK)
580 dev_err(edac_dev->dev, "Multiple correctable error\n");
581 switch (MEMERR_CPU_LSUESR_ERRTYPE_RD(val)) {
583 dev_err(edac_dev->dev, "Load tag error\n");
586 dev_err(edac_dev->dev, "Load data error\n");
589 dev_err(edac_dev->dev, "WSL multihit error\n");
592 dev_err(edac_dev->dev, "Store tag error\n");
595 dev_err(edac_dev->dev,
596 "DTB multihit from load pipeline error\n");
599 dev_err(edac_dev->dev,
600 "DTB multihit from store pipeline error\n");
604 /* Clear any HW errors */
605 writel(val, pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET);
607 if (val & (MEMERR_CPU_LSUESR_CERR_MASK |
608 MEMERR_CPU_LSUESR_MULTCERR_MASK))
609 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
612 val = readl(pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET);
615 dev_err(edac_dev->dev,
616 "CPU%d memory error MMU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X %s\n",
617 ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val,
618 MEMERR_CPU_MMUESR_ERRWAY_RD(val),
619 MEMERR_CPU_MMUESR_ERRINDEX_RD(val),
620 MEMERR_CPU_MMUESR_ERRINFO_RD(val),
621 val & MEMERR_CPU_MMUESR_ERRREQSTR_LSU_MASK ? "LSU" : "ICF");
622 if (val & MEMERR_CPU_MMUESR_CERR_MASK)
623 dev_err(edac_dev->dev, "One or more correctable error\n");
624 if (val & MEMERR_CPU_MMUESR_MULTCERR_MASK)
625 dev_err(edac_dev->dev, "Multiple correctable error\n");
626 switch (MEMERR_CPU_MMUESR_ERRTYPE_RD(val)) {
628 dev_err(edac_dev->dev, "Stage 1 UTB hit error\n");
631 dev_err(edac_dev->dev, "Stage 1 UTB miss error\n");
634 dev_err(edac_dev->dev, "Stage 1 UTB allocate error\n");
637 dev_err(edac_dev->dev, "TMO operation single bank error\n");
640 dev_err(edac_dev->dev, "Stage 2 UTB error\n");
643 dev_err(edac_dev->dev, "Stage 2 UTB miss error\n");
646 dev_err(edac_dev->dev, "Stage 2 UTB allocate error\n");
649 dev_err(edac_dev->dev, "TMO operation multiple bank error\n");
653 /* Clear any HW errors */
654 writel(val, pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET);
656 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
659 static void xgene_edac_pmd_l2_check(struct edac_device_ctl_info *edac_dev)
661 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
669 pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE;
670 val = readl(pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET);
673 val_lo = readl(pg_e + MEMERR_L2C_L2EALR_PAGE_OFFSET);
674 val_hi = readl(pg_e + MEMERR_L2C_L2EAHR_PAGE_OFFSET);
675 dev_err(edac_dev->dev,
676 "PMD%d memory error L2C L2ESR 0x%08X @ 0x%08X.%08X\n",
677 ctx->pmd, val, val_hi, val_lo);
678 dev_err(edac_dev->dev,
679 "ErrSyndrome 0x%02X ErrWay 0x%02X ErrCpu %d ErrGroup 0x%02X ErrAction 0x%02X\n",
680 MEMERR_L2C_L2ESR_ERRSYN_RD(val),
681 MEMERR_L2C_L2ESR_ERRWAY_RD(val),
682 MEMERR_L2C_L2ESR_ERRCPU_RD(val),
683 MEMERR_L2C_L2ESR_ERRGROUP_RD(val),
684 MEMERR_L2C_L2ESR_ERRACTION_RD(val));
686 if (val & MEMERR_L2C_L2ESR_ERR_MASK)
687 dev_err(edac_dev->dev, "One or more correctable error\n");
688 if (val & MEMERR_L2C_L2ESR_MULTICERR_MASK)
689 dev_err(edac_dev->dev, "Multiple correctable error\n");
690 if (val & MEMERR_L2C_L2ESR_UCERR_MASK)
691 dev_err(edac_dev->dev, "One or more uncorrectable error\n");
692 if (val & MEMERR_L2C_L2ESR_MULTUCERR_MASK)
693 dev_err(edac_dev->dev, "Multiple uncorrectable error\n");
695 switch (MEMERR_L2C_L2ESR_ERRTYPE_RD(val)) {
697 dev_err(edac_dev->dev, "Outbound SDB parity error\n");
700 dev_err(edac_dev->dev, "Inbound SDB parity error\n");
703 dev_err(edac_dev->dev, "Tag ECC error\n");
706 dev_err(edac_dev->dev, "Data ECC error\n");
710 /* Clear any HW errors */
711 writel(val, pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET);
713 if (val & (MEMERR_L2C_L2ESR_ERR_MASK |
714 MEMERR_L2C_L2ESR_MULTICERR_MASK))
715 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
716 if (val & (MEMERR_L2C_L2ESR_UCERR_MASK |
717 MEMERR_L2C_L2ESR_MULTUCERR_MASK))
718 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
721 /* Check if any memory request timed out on L2 cache */
722 pg_d = ctx->pmd_csr + CPU_L2C_PAGE;
723 val = readl(pg_d + CPUX_L2C_L2RTOSR_PAGE_OFFSET);
725 val_lo = readl(pg_d + CPUX_L2C_L2RTOALR_PAGE_OFFSET);
726 val_hi = readl(pg_d + CPUX_L2C_L2RTOAHR_PAGE_OFFSET);
727 dev_err(edac_dev->dev,
728 "PMD%d L2C error L2C RTOSR 0x%08X @ 0x%08X.%08X\n",
729 ctx->pmd, val, val_hi, val_lo);
730 writel(val, pg_d + CPUX_L2C_L2RTOSR_PAGE_OFFSET);
734 static void xgene_edac_pmd_check(struct edac_device_ctl_info *edac_dev)
736 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
737 unsigned int pcp_hp_stat;
740 xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat);
741 if (!((PMD0_MERR_MASK << ctx->pmd) & pcp_hp_stat))
744 /* Check CPU L1 error */
745 for (i = 0; i < MAX_CPU_PER_PMD; i++)
746 xgene_edac_pmd_l1_check(edac_dev, i);
748 /* Check CPU L2 error */
749 xgene_edac_pmd_l2_check(edac_dev);
752 static void xgene_edac_pmd_cpu_hw_cfg(struct edac_device_ctl_info *edac_dev,
755 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
756 void __iomem *pg_f = ctx->pmd_csr + cpu * CPU_CSR_STRIDE +
760 * Enable CPU memory error:
761 * MEMERR_CPU_ICFESRA, MEMERR_CPU_LSUESRA, and MEMERR_CPU_MMUESRA
763 writel(0x00000301, pg_f + MEMERR_CPU_ICFECR_PAGE_OFFSET);
764 writel(0x00000301, pg_f + MEMERR_CPU_LSUECR_PAGE_OFFSET);
765 writel(0x00000101, pg_f + MEMERR_CPU_MMUECR_PAGE_OFFSET);
768 static void xgene_edac_pmd_hw_cfg(struct edac_device_ctl_info *edac_dev)
770 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
771 void __iomem *pg_d = ctx->pmd_csr + CPU_L2C_PAGE;
772 void __iomem *pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE;
774 /* Enable PMD memory error - MEMERR_L2C_L2ECR and L2C_L2RTOCR */
775 writel(0x00000703, pg_e + MEMERR_L2C_L2ECR_PAGE_OFFSET);
776 /* Configure L2C HW request time out feature if supported */
777 if (ctx->version > 1)
778 writel(0x00000119, pg_d + CPUX_L2C_L2RTOCR_PAGE_OFFSET);
781 static void xgene_edac_pmd_hw_ctl(struct edac_device_ctl_info *edac_dev,
784 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
787 /* Enable PMD error interrupt */
788 if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
790 xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
791 PMD0_MERR_MASK << ctx->pmd);
793 xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
794 PMD0_MERR_MASK << ctx->pmd);
798 xgene_edac_pmd_hw_cfg(edac_dev);
800 /* Two CPUs per a PMD */
801 for (i = 0; i < MAX_CPU_PER_PMD; i++)
802 xgene_edac_pmd_cpu_hw_cfg(edac_dev, i);
806 static ssize_t xgene_edac_pmd_l1_inject_ctrl_write(struct file *file,
807 const char __user *data,
808 size_t count, loff_t *ppos)
810 struct edac_device_ctl_info *edac_dev = file->private_data;
811 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
812 void __iomem *cpux_pg_f;
815 for (i = 0; i < MAX_CPU_PER_PMD; i++) {
816 cpux_pg_f = ctx->pmd_csr + i * CPU_CSR_STRIDE +
819 writel(MEMERR_CPU_ICFESR_MULTCERR_MASK |
820 MEMERR_CPU_ICFESR_CERR_MASK,
821 cpux_pg_f + MEMERR_CPU_ICFESRA_PAGE_OFFSET);
822 writel(MEMERR_CPU_LSUESR_MULTCERR_MASK |
823 MEMERR_CPU_LSUESR_CERR_MASK,
824 cpux_pg_f + MEMERR_CPU_LSUESRA_PAGE_OFFSET);
825 writel(MEMERR_CPU_MMUESR_MULTCERR_MASK |
826 MEMERR_CPU_MMUESR_CERR_MASK,
827 cpux_pg_f + MEMERR_CPU_MMUESRA_PAGE_OFFSET);
832 static ssize_t xgene_edac_pmd_l2_inject_ctrl_write(struct file *file,
833 const char __user *data,
834 size_t count, loff_t *ppos)
836 struct edac_device_ctl_info *edac_dev = file->private_data;
837 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
838 void __iomem *pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE;
840 writel(MEMERR_L2C_L2ESR_MULTUCERR_MASK |
841 MEMERR_L2C_L2ESR_MULTICERR_MASK |
842 MEMERR_L2C_L2ESR_UCERR_MASK |
843 MEMERR_L2C_L2ESR_ERR_MASK,
844 pg_e + MEMERR_L2C_L2ESRA_PAGE_OFFSET);
848 static const struct file_operations xgene_edac_pmd_debug_inject_fops[] = {
851 .write = xgene_edac_pmd_l1_inject_ctrl_write,
852 .llseek = generic_file_llseek, },
855 .write = xgene_edac_pmd_l2_inject_ctrl_write,
856 .llseek = generic_file_llseek, },
861 xgene_edac_pmd_create_debugfs_nodes(struct edac_device_ctl_info *edac_dev)
863 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
864 struct dentry *dbgfs_dir;
867 if (!IS_ENABLED(CONFIG_EDAC_DEBUG) || !ctx->edac->dfs)
870 snprintf(name, sizeof(name), "PMD%d", ctx->pmd);
871 dbgfs_dir = edac_debugfs_create_dir_at(name, ctx->edac->dfs);
875 edac_debugfs_create_file("l1_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev,
876 &xgene_edac_pmd_debug_inject_fops[0]);
877 edac_debugfs_create_file("l2_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev,
878 &xgene_edac_pmd_debug_inject_fops[1]);
881 static int xgene_edac_pmd_available(u32 efuse, int pmd)
883 return (efuse & (1 << pmd)) ? 0 : 1;
886 static int xgene_edac_pmd_add(struct xgene_edac *edac, struct device_node *np,
889 struct edac_device_ctl_info *edac_dev;
890 struct xgene_edac_pmd_ctx *ctx;
897 if (!devres_open_group(edac->dev, xgene_edac_pmd_add, GFP_KERNEL))
900 /* Determine if this PMD is disabled */
901 if (of_property_read_u32(np, "pmd-controller", &pmd)) {
902 dev_err(edac->dev, "no pmd-controller property\n");
906 rc = regmap_read(edac->efuse_map, 0, &val);
909 if (!xgene_edac_pmd_available(val, pmd)) {
914 snprintf(edac_name, sizeof(edac_name), "l2c%d", pmd);
915 edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
916 edac_name, 1, "l2c", 1, 2, NULL,
917 0, edac_device_alloc_index());
923 ctx = edac_dev->pvt_info;
924 ctx->name = "xgene_pmd_err";
927 ctx->edac_dev = edac_dev;
928 ctx->ddev = *edac->dev;
929 ctx->version = version;
930 edac_dev->dev = &ctx->ddev;
931 edac_dev->ctl_name = ctx->name;
932 edac_dev->dev_name = ctx->name;
933 edac_dev->mod_name = EDAC_MOD_STR;
935 rc = of_address_to_resource(np, 0, &res);
937 dev_err(edac->dev, "no PMD resource address\n");
940 ctx->pmd_csr = devm_ioremap_resource(edac->dev, &res);
941 if (IS_ERR(ctx->pmd_csr)) {
943 "devm_ioremap_resource failed for PMD resource address\n");
944 rc = PTR_ERR(ctx->pmd_csr);
948 if (edac_op_state == EDAC_OPSTATE_POLL)
949 edac_dev->edac_check = xgene_edac_pmd_check;
951 xgene_edac_pmd_create_debugfs_nodes(edac_dev);
953 rc = edac_device_add_device(edac_dev);
955 dev_err(edac->dev, "edac_device_add_device failed\n");
960 if (edac_op_state == EDAC_OPSTATE_INT)
961 edac_dev->op_state = OP_RUNNING_INTERRUPT;
963 list_add(&ctx->next, &edac->pmds);
965 xgene_edac_pmd_hw_ctl(edac_dev, 1);
967 devres_remove_group(edac->dev, xgene_edac_pmd_add);
969 dev_info(edac->dev, "X-Gene EDAC PMD%d registered\n", ctx->pmd);
973 edac_device_free_ctl_info(edac_dev);
975 devres_release_group(edac->dev, xgene_edac_pmd_add);
979 static int xgene_edac_pmd_remove(struct xgene_edac_pmd_ctx *pmd)
981 struct edac_device_ctl_info *edac_dev = pmd->edac_dev;
983 xgene_edac_pmd_hw_ctl(edac_dev, 0);
984 edac_device_del_device(edac_dev->dev);
985 edac_device_free_ctl_info(edac_dev);
989 /* L3 Error device */
990 #define L3C_ESR (0x0A * 4)
991 #define L3C_ESR_DATATAG_MASK BIT(9)
992 #define L3C_ESR_MULTIHIT_MASK BIT(8)
993 #define L3C_ESR_UCEVICT_MASK BIT(6)
994 #define L3C_ESR_MULTIUCERR_MASK BIT(5)
995 #define L3C_ESR_MULTICERR_MASK BIT(4)
996 #define L3C_ESR_UCERR_MASK BIT(3)
997 #define L3C_ESR_CERR_MASK BIT(2)
998 #define L3C_ESR_UCERRINTR_MASK BIT(1)
999 #define L3C_ESR_CERRINTR_MASK BIT(0)
1000 #define L3C_ECR (0x0B * 4)
1001 #define L3C_ECR_UCINTREN BIT(3)
1002 #define L3C_ECR_CINTREN BIT(2)
1003 #define L3C_UCERREN BIT(1)
1004 #define L3C_CERREN BIT(0)
1005 #define L3C_ELR (0x0C * 4)
1006 #define L3C_ELR_ERRSYN(src) ((src & 0xFF800000) >> 23)
1007 #define L3C_ELR_ERRWAY(src) ((src & 0x007E0000) >> 17)
1008 #define L3C_ELR_AGENTID(src) ((src & 0x0001E000) >> 13)
1009 #define L3C_ELR_ERRGRP(src) ((src & 0x00000F00) >> 8)
1010 #define L3C_ELR_OPTYPE(src) ((src & 0x000000F0) >> 4)
1011 #define L3C_ELR_PADDRHIGH(src) (src & 0x0000000F)
1012 #define L3C_AELR (0x0D * 4)
1013 #define L3C_BELR (0x0E * 4)
1014 #define L3C_BELR_BANK(src) (src & 0x0000000F)
1016 struct xgene_edac_dev_ctx {
1017 struct list_head next;
1020 struct xgene_edac *edac;
1021 struct edac_device_ctl_info *edac_dev;
1023 void __iomem *dev_csr;
1028 * Version 1 of the L3 controller has broken single bit correctable logic for
1029 * certain error syndromes. Log them as uncorrectable in that case.
1031 static bool xgene_edac_l3_promote_to_uc_err(u32 l3cesr, u32 l3celr)
1033 if (l3cesr & L3C_ESR_DATATAG_MASK) {
1034 switch (L3C_ELR_ERRSYN(l3celr)) {
1047 } else if (L3C_ELR_ERRWAY(l3celr) == 9)
1053 static void xgene_edac_l3_check(struct edac_device_ctl_info *edac_dev)
1055 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1061 l3cesr = readl(ctx->dev_csr + L3C_ESR);
1062 if (!(l3cesr & (L3C_ESR_UCERR_MASK | L3C_ESR_CERR_MASK)))
1065 if (l3cesr & L3C_ESR_UCERR_MASK)
1066 dev_err(edac_dev->dev, "L3C uncorrectable error\n");
1067 if (l3cesr & L3C_ESR_CERR_MASK)
1068 dev_warn(edac_dev->dev, "L3C correctable error\n");
1070 l3celr = readl(ctx->dev_csr + L3C_ELR);
1071 l3caelr = readl(ctx->dev_csr + L3C_AELR);
1072 l3cbelr = readl(ctx->dev_csr + L3C_BELR);
1073 if (l3cesr & L3C_ESR_MULTIHIT_MASK)
1074 dev_err(edac_dev->dev, "L3C multiple hit error\n");
1075 if (l3cesr & L3C_ESR_UCEVICT_MASK)
1076 dev_err(edac_dev->dev,
1077 "L3C dropped eviction of line with error\n");
1078 if (l3cesr & L3C_ESR_MULTIUCERR_MASK)
1079 dev_err(edac_dev->dev, "L3C multiple uncorrectable error\n");
1080 if (l3cesr & L3C_ESR_DATATAG_MASK)
1081 dev_err(edac_dev->dev,
1082 "L3C data error syndrome 0x%X group 0x%X\n",
1083 L3C_ELR_ERRSYN(l3celr), L3C_ELR_ERRGRP(l3celr));
1085 dev_err(edac_dev->dev,
1086 "L3C tag error syndrome 0x%X Way of Tag 0x%X Agent ID 0x%X Operation type 0x%X\n",
1087 L3C_ELR_ERRSYN(l3celr), L3C_ELR_ERRWAY(l3celr),
1088 L3C_ELR_AGENTID(l3celr), L3C_ELR_OPTYPE(l3celr));
1090 * NOTE: Address [41:38] in L3C_ELR_PADDRHIGH(l3celr).
1091 * Address [37:6] in l3caelr. Lower 6 bits are zero.
1093 dev_err(edac_dev->dev, "L3C error address 0x%08X.%08X bank %d\n",
1094 L3C_ELR_PADDRHIGH(l3celr) << 6 | (l3caelr >> 26),
1095 (l3caelr & 0x3FFFFFFF) << 6, L3C_BELR_BANK(l3cbelr));
1096 dev_err(edac_dev->dev,
1097 "L3C error status register value 0x%X\n", l3cesr);
1099 /* Clear L3C error interrupt */
1100 writel(0, ctx->dev_csr + L3C_ESR);
1102 if (ctx->version <= 1 &&
1103 xgene_edac_l3_promote_to_uc_err(l3cesr, l3celr)) {
1104 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
1107 if (l3cesr & L3C_ESR_CERR_MASK)
1108 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
1109 if (l3cesr & L3C_ESR_UCERR_MASK)
1110 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
1113 static void xgene_edac_l3_hw_init(struct edac_device_ctl_info *edac_dev,
1116 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1119 val = readl(ctx->dev_csr + L3C_ECR);
1120 val |= L3C_UCERREN | L3C_CERREN;
1121 /* On disable, we just disable interrupt but keep error enabled */
1122 if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
1124 val |= L3C_ECR_UCINTREN | L3C_ECR_CINTREN;
1126 val &= ~(L3C_ECR_UCINTREN | L3C_ECR_CINTREN);
1128 writel(val, ctx->dev_csr + L3C_ECR);
1130 if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
1131 /* Enable/disable L3 error top level interrupt */
1133 xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
1134 L3C_UNCORR_ERR_MASK);
1135 xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
1138 xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
1139 L3C_UNCORR_ERR_MASK);
1140 xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
1146 static ssize_t xgene_edac_l3_inject_ctrl_write(struct file *file,
1147 const char __user *data,
1148 size_t count, loff_t *ppos)
1150 struct edac_device_ctl_info *edac_dev = file->private_data;
1151 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1153 /* Generate all errors */
1154 writel(0xFFFFFFFF, ctx->dev_csr + L3C_ESR);
1158 static const struct file_operations xgene_edac_l3_debug_inject_fops = {
1159 .open = simple_open,
1160 .write = xgene_edac_l3_inject_ctrl_write,
1161 .llseek = generic_file_llseek
1165 xgene_edac_l3_create_debugfs_nodes(struct edac_device_ctl_info *edac_dev)
1167 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1168 struct dentry *dbgfs_dir;
1171 if (!IS_ENABLED(CONFIG_EDAC_DEBUG) || !ctx->edac->dfs)
1174 snprintf(name, sizeof(name), "l3c%d", ctx->edac_idx);
1175 dbgfs_dir = edac_debugfs_create_dir_at(name, ctx->edac->dfs);
1179 debugfs_create_file("l3_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev,
1180 &xgene_edac_l3_debug_inject_fops);
1183 static int xgene_edac_l3_add(struct xgene_edac *edac, struct device_node *np,
1186 struct edac_device_ctl_info *edac_dev;
1187 struct xgene_edac_dev_ctx *ctx;
1188 struct resource res;
1189 void __iomem *dev_csr;
1193 if (!devres_open_group(edac->dev, xgene_edac_l3_add, GFP_KERNEL))
1196 rc = of_address_to_resource(np, 0, &res);
1198 dev_err(edac->dev, "no L3 resource address\n");
1199 goto err_release_group;
1201 dev_csr = devm_ioremap_resource(edac->dev, &res);
1202 if (IS_ERR(dev_csr)) {
1204 "devm_ioremap_resource failed for L3 resource address\n");
1205 rc = PTR_ERR(dev_csr);
1206 goto err_release_group;
1209 edac_idx = edac_device_alloc_index();
1210 edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
1211 "l3c", 1, "l3c", 1, 0, NULL, 0,
1215 goto err_release_group;
1218 ctx = edac_dev->pvt_info;
1219 ctx->dev_csr = dev_csr;
1220 ctx->name = "xgene_l3_err";
1221 ctx->edac_idx = edac_idx;
1223 ctx->edac_dev = edac_dev;
1224 ctx->ddev = *edac->dev;
1225 ctx->version = version;
1226 edac_dev->dev = &ctx->ddev;
1227 edac_dev->ctl_name = ctx->name;
1228 edac_dev->dev_name = ctx->name;
1229 edac_dev->mod_name = EDAC_MOD_STR;
1231 if (edac_op_state == EDAC_OPSTATE_POLL)
1232 edac_dev->edac_check = xgene_edac_l3_check;
1234 xgene_edac_l3_create_debugfs_nodes(edac_dev);
1236 rc = edac_device_add_device(edac_dev);
1238 dev_err(edac->dev, "failed edac_device_add_device()\n");
1243 if (edac_op_state == EDAC_OPSTATE_INT)
1244 edac_dev->op_state = OP_RUNNING_INTERRUPT;
1246 list_add(&ctx->next, &edac->l3s);
1248 xgene_edac_l3_hw_init(edac_dev, 1);
1250 devres_remove_group(edac->dev, xgene_edac_l3_add);
1252 dev_info(edac->dev, "X-Gene EDAC L3 registered\n");
1256 edac_device_free_ctl_info(edac_dev);
1258 devres_release_group(edac->dev, xgene_edac_l3_add);
1262 static int xgene_edac_l3_remove(struct xgene_edac_dev_ctx *l3)
1264 struct edac_device_ctl_info *edac_dev = l3->edac_dev;
1266 xgene_edac_l3_hw_init(edac_dev, 0);
1267 edac_device_del_device(l3->edac->dev);
1268 edac_device_free_ctl_info(edac_dev);
1272 /* SoC error device */
1273 #define IOBAXIS0TRANSERRINTSTS 0x0000
1274 #define IOBAXIS0_M_ILLEGAL_ACCESS_MASK BIT(1)
1275 #define IOBAXIS0_ILLEGAL_ACCESS_MASK BIT(0)
1276 #define IOBAXIS0TRANSERRINTMSK 0x0004
1277 #define IOBAXIS0TRANSERRREQINFOL 0x0008
1278 #define IOBAXIS0TRANSERRREQINFOH 0x000c
1279 #define REQTYPE_RD(src) (((src) & BIT(0)))
1280 #define ERRADDRH_RD(src) (((src) & 0xffc00000) >> 22)
1281 #define IOBAXIS1TRANSERRINTSTS 0x0010
1282 #define IOBAXIS1TRANSERRINTMSK 0x0014
1283 #define IOBAXIS1TRANSERRREQINFOL 0x0018
1284 #define IOBAXIS1TRANSERRREQINFOH 0x001c
1285 #define IOBPATRANSERRINTSTS 0x0020
1286 #define IOBPA_M_REQIDRAM_CORRUPT_MASK BIT(7)
1287 #define IOBPA_REQIDRAM_CORRUPT_MASK BIT(6)
1288 #define IOBPA_M_TRANS_CORRUPT_MASK BIT(5)
1289 #define IOBPA_TRANS_CORRUPT_MASK BIT(4)
1290 #define IOBPA_M_WDATA_CORRUPT_MASK BIT(3)
1291 #define IOBPA_WDATA_CORRUPT_MASK BIT(2)
1292 #define IOBPA_M_RDATA_CORRUPT_MASK BIT(1)
1293 #define IOBPA_RDATA_CORRUPT_MASK BIT(0)
1294 #define IOBBATRANSERRINTSTS 0x0030
1295 #define M_ILLEGAL_ACCESS_MASK BIT(15)
1296 #define ILLEGAL_ACCESS_MASK BIT(14)
1297 #define M_WIDRAM_CORRUPT_MASK BIT(13)
1298 #define WIDRAM_CORRUPT_MASK BIT(12)
1299 #define M_RIDRAM_CORRUPT_MASK BIT(11)
1300 #define RIDRAM_CORRUPT_MASK BIT(10)
1301 #define M_TRANS_CORRUPT_MASK BIT(9)
1302 #define TRANS_CORRUPT_MASK BIT(8)
1303 #define M_WDATA_CORRUPT_MASK BIT(7)
1304 #define WDATA_CORRUPT_MASK BIT(6)
1305 #define M_RBM_POISONED_REQ_MASK BIT(5)
1306 #define RBM_POISONED_REQ_MASK BIT(4)
1307 #define M_XGIC_POISONED_REQ_MASK BIT(3)
1308 #define XGIC_POISONED_REQ_MASK BIT(2)
1309 #define M_WRERR_RESP_MASK BIT(1)
1310 #define WRERR_RESP_MASK BIT(0)
1311 #define IOBBATRANSERRREQINFOL 0x0038
1312 #define IOBBATRANSERRREQINFOH 0x003c
1313 #define REQTYPE_F2_RD(src) ((src) & BIT(0))
1314 #define ERRADDRH_F2_RD(src) (((src) & 0xffc00000) >> 22)
1315 #define IOBBATRANSERRCSWREQID 0x0040
1316 #define XGICTRANSERRINTSTS 0x0050
1317 #define M_WR_ACCESS_ERR_MASK BIT(3)
1318 #define WR_ACCESS_ERR_MASK BIT(2)
1319 #define M_RD_ACCESS_ERR_MASK BIT(1)
1320 #define RD_ACCESS_ERR_MASK BIT(0)
1321 #define XGICTRANSERRINTMSK 0x0054
1322 #define XGICTRANSERRREQINFO 0x0058
1323 #define REQTYPE_MASK BIT(26)
1324 #define ERRADDR_RD(src) ((src) & 0x03ffffff)
1325 #define GLBL_ERR_STS 0x0800
1326 #define MDED_ERR_MASK BIT(3)
1327 #define DED_ERR_MASK BIT(2)
1328 #define MSEC_ERR_MASK BIT(1)
1329 #define SEC_ERR_MASK BIT(0)
1330 #define GLBL_SEC_ERRL 0x0810
1331 #define GLBL_SEC_ERRH 0x0818
1332 #define GLBL_MSEC_ERRL 0x0820
1333 #define GLBL_MSEC_ERRH 0x0828
1334 #define GLBL_DED_ERRL 0x0830
1335 #define GLBL_DED_ERRLMASK 0x0834
1336 #define GLBL_DED_ERRH 0x0838
1337 #define GLBL_DED_ERRHMASK 0x083c
1338 #define GLBL_MDED_ERRL 0x0840
1339 #define GLBL_MDED_ERRLMASK 0x0844
1340 #define GLBL_MDED_ERRH 0x0848
1341 #define GLBL_MDED_ERRHMASK 0x084c
1343 /* IO Bus Registers */
1344 #define RBCSR 0x0000
1345 #define STICKYERR_MASK BIT(0)
1346 #define RBEIR 0x0008
1347 #define AGENT_OFFLINE_ERR_MASK BIT(30)
1348 #define UNIMPL_RBPAGE_ERR_MASK BIT(29)
1349 #define WORD_ALIGNED_ERR_MASK BIT(28)
1350 #define PAGE_ACCESS_ERR_MASK BIT(27)
1351 #define WRITE_ACCESS_MASK BIT(26)
1353 static const char * const soc_mem_err_v1[] = {
1388 static void xgene_edac_iob_gic_report(struct edac_device_ctl_info *edac_dev)
1390 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1396 /* GIC transaction error interrupt */
1397 reg = readl(ctx->dev_csr + XGICTRANSERRINTSTS);
1400 dev_err(edac_dev->dev, "XGIC transaction error\n");
1401 if (reg & RD_ACCESS_ERR_MASK)
1402 dev_err(edac_dev->dev, "XGIC read size error\n");
1403 if (reg & M_RD_ACCESS_ERR_MASK)
1404 dev_err(edac_dev->dev, "Multiple XGIC read size error\n");
1405 if (reg & WR_ACCESS_ERR_MASK)
1406 dev_err(edac_dev->dev, "XGIC write size error\n");
1407 if (reg & M_WR_ACCESS_ERR_MASK)
1408 dev_err(edac_dev->dev, "Multiple XGIC write size error\n");
1409 info = readl(ctx->dev_csr + XGICTRANSERRREQINFO);
1410 dev_err(edac_dev->dev, "XGIC %s access @ 0x%08X (0x%08X)\n",
1411 info & REQTYPE_MASK ? "read" : "write", ERRADDR_RD(info),
1413 writel(reg, ctx->dev_csr + XGICTRANSERRINTSTS);
1416 /* IOB memory error */
1417 reg = readl(ctx->dev_csr + GLBL_ERR_STS);
1420 if (reg & SEC_ERR_MASK) {
1421 err_addr_lo = readl(ctx->dev_csr + GLBL_SEC_ERRL);
1422 err_addr_hi = readl(ctx->dev_csr + GLBL_SEC_ERRH);
1423 dev_err(edac_dev->dev,
1424 "IOB single-bit correctable memory at 0x%08X.%08X error\n",
1425 err_addr_lo, err_addr_hi);
1426 writel(err_addr_lo, ctx->dev_csr + GLBL_SEC_ERRL);
1427 writel(err_addr_hi, ctx->dev_csr + GLBL_SEC_ERRH);
1429 if (reg & MSEC_ERR_MASK) {
1430 err_addr_lo = readl(ctx->dev_csr + GLBL_MSEC_ERRL);
1431 err_addr_hi = readl(ctx->dev_csr + GLBL_MSEC_ERRH);
1432 dev_err(edac_dev->dev,
1433 "IOB multiple single-bit correctable memory at 0x%08X.%08X error\n",
1434 err_addr_lo, err_addr_hi);
1435 writel(err_addr_lo, ctx->dev_csr + GLBL_MSEC_ERRL);
1436 writel(err_addr_hi, ctx->dev_csr + GLBL_MSEC_ERRH);
1438 if (reg & (SEC_ERR_MASK | MSEC_ERR_MASK))
1439 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
1441 if (reg & DED_ERR_MASK) {
1442 err_addr_lo = readl(ctx->dev_csr + GLBL_DED_ERRL);
1443 err_addr_hi = readl(ctx->dev_csr + GLBL_DED_ERRH);
1444 dev_err(edac_dev->dev,
1445 "IOB double-bit uncorrectable memory at 0x%08X.%08X error\n",
1446 err_addr_lo, err_addr_hi);
1447 writel(err_addr_lo, ctx->dev_csr + GLBL_DED_ERRL);
1448 writel(err_addr_hi, ctx->dev_csr + GLBL_DED_ERRH);
1450 if (reg & MDED_ERR_MASK) {
1451 err_addr_lo = readl(ctx->dev_csr + GLBL_MDED_ERRL);
1452 err_addr_hi = readl(ctx->dev_csr + GLBL_MDED_ERRH);
1453 dev_err(edac_dev->dev,
1454 "Multiple IOB double-bit uncorrectable memory at 0x%08X.%08X error\n",
1455 err_addr_lo, err_addr_hi);
1456 writel(err_addr_lo, ctx->dev_csr + GLBL_MDED_ERRL);
1457 writel(err_addr_hi, ctx->dev_csr + GLBL_MDED_ERRH);
1459 if (reg & (DED_ERR_MASK | MDED_ERR_MASK))
1460 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
1463 static void xgene_edac_rb_report(struct edac_device_ctl_info *edac_dev)
1465 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1470 /* If the register bus resource isn't available, just skip it */
1471 if (!ctx->edac->rb_map)
1475 * Check RB access errors
1477 * 2. Un-implemented page
1478 * 3. Un-aligned access
1479 * 4. Offline slave IP
1481 if (regmap_read(ctx->edac->rb_map, RBCSR, ®))
1483 if (reg & STICKYERR_MASK) {
1486 dev_err(edac_dev->dev, "IOB bus access error(s)\n");
1487 if (regmap_read(ctx->edac->rb_map, RBEIR, ®))
1489 write = reg & WRITE_ACCESS_MASK ? 1 : 0;
1490 if (reg & AGENT_OFFLINE_ERR_MASK)
1491 dev_err(edac_dev->dev,
1492 "IOB bus %s access to offline agent error\n",
1493 write ? "write" : "read");
1494 if (reg & UNIMPL_RBPAGE_ERR_MASK)
1495 dev_err(edac_dev->dev,
1496 "IOB bus %s access to unimplemented page error\n",
1497 write ? "write" : "read");
1498 if (reg & WORD_ALIGNED_ERR_MASK)
1499 dev_err(edac_dev->dev,
1500 "IOB bus %s word aligned access error\n",
1501 write ? "write" : "read");
1502 if (reg & PAGE_ACCESS_ERR_MASK)
1503 dev_err(edac_dev->dev,
1504 "IOB bus %s to page out of range access error\n",
1505 write ? "write" : "read");
1506 if (regmap_write(ctx->edac->rb_map, RBEIR, 0))
1508 if (regmap_write(ctx->edac->rb_map, RBCSR, 0))
1513 /* IOB Bridge agent transaction error interrupt */
1514 reg = readl(ctx->dev_csr + IOBBATRANSERRINTSTS);
1518 dev_err(edac_dev->dev, "IOB bridge agent (BA) transaction error\n");
1519 if (reg & WRERR_RESP_MASK)
1520 dev_err(edac_dev->dev, "IOB BA write response error\n");
1521 if (reg & M_WRERR_RESP_MASK)
1522 dev_err(edac_dev->dev,
1523 "Multiple IOB BA write response error\n");
1524 if (reg & XGIC_POISONED_REQ_MASK)
1525 dev_err(edac_dev->dev, "IOB BA XGIC poisoned write error\n");
1526 if (reg & M_XGIC_POISONED_REQ_MASK)
1527 dev_err(edac_dev->dev,
1528 "Multiple IOB BA XGIC poisoned write error\n");
1529 if (reg & RBM_POISONED_REQ_MASK)
1530 dev_err(edac_dev->dev, "IOB BA RBM poisoned write error\n");
1531 if (reg & M_RBM_POISONED_REQ_MASK)
1532 dev_err(edac_dev->dev,
1533 "Multiple IOB BA RBM poisoned write error\n");
1534 if (reg & WDATA_CORRUPT_MASK)
1535 dev_err(edac_dev->dev, "IOB BA write error\n");
1536 if (reg & M_WDATA_CORRUPT_MASK)
1537 dev_err(edac_dev->dev, "Multiple IOB BA write error\n");
1538 if (reg & TRANS_CORRUPT_MASK)
1539 dev_err(edac_dev->dev, "IOB BA transaction error\n");
1540 if (reg & M_TRANS_CORRUPT_MASK)
1541 dev_err(edac_dev->dev, "Multiple IOB BA transaction error\n");
1542 if (reg & RIDRAM_CORRUPT_MASK)
1543 dev_err(edac_dev->dev,
1544 "IOB BA RDIDRAM read transaction ID error\n");
1545 if (reg & M_RIDRAM_CORRUPT_MASK)
1546 dev_err(edac_dev->dev,
1547 "Multiple IOB BA RDIDRAM read transaction ID error\n");
1548 if (reg & WIDRAM_CORRUPT_MASK)
1549 dev_err(edac_dev->dev,
1550 "IOB BA RDIDRAM write transaction ID error\n");
1551 if (reg & M_WIDRAM_CORRUPT_MASK)
1552 dev_err(edac_dev->dev,
1553 "Multiple IOB BA RDIDRAM write transaction ID error\n");
1554 if (reg & ILLEGAL_ACCESS_MASK)
1555 dev_err(edac_dev->dev,
1556 "IOB BA XGIC/RB illegal access error\n");
1557 if (reg & M_ILLEGAL_ACCESS_MASK)
1558 dev_err(edac_dev->dev,
1559 "Multiple IOB BA XGIC/RB illegal access error\n");
1561 err_addr_lo = readl(ctx->dev_csr + IOBBATRANSERRREQINFOL);
1562 err_addr_hi = readl(ctx->dev_csr + IOBBATRANSERRREQINFOH);
1563 dev_err(edac_dev->dev, "IOB BA %s access at 0x%02X.%08X (0x%08X)\n",
1564 REQTYPE_F2_RD(err_addr_hi) ? "read" : "write",
1565 ERRADDRH_F2_RD(err_addr_hi), err_addr_lo, err_addr_hi);
1566 if (reg & WRERR_RESP_MASK)
1567 dev_err(edac_dev->dev, "IOB BA requestor ID 0x%08X\n",
1568 readl(ctx->dev_csr + IOBBATRANSERRCSWREQID));
1569 writel(reg, ctx->dev_csr + IOBBATRANSERRINTSTS);
1572 static void xgene_edac_pa_report(struct edac_device_ctl_info *edac_dev)
1574 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1579 /* IOB Processing agent transaction error interrupt */
1580 reg = readl(ctx->dev_csr + IOBPATRANSERRINTSTS);
1583 dev_err(edac_dev->dev, "IOB processing agent (PA) transaction error\n");
1584 if (reg & IOBPA_RDATA_CORRUPT_MASK)
1585 dev_err(edac_dev->dev, "IOB PA read data RAM error\n");
1586 if (reg & IOBPA_M_RDATA_CORRUPT_MASK)
1587 dev_err(edac_dev->dev,
1588 "Multiple IOB PA read data RAM error\n");
1589 if (reg & IOBPA_WDATA_CORRUPT_MASK)
1590 dev_err(edac_dev->dev, "IOB PA write data RAM error\n");
1591 if (reg & IOBPA_M_WDATA_CORRUPT_MASK)
1592 dev_err(edac_dev->dev,
1593 "Multiple IOB PA write data RAM error\n");
1594 if (reg & IOBPA_TRANS_CORRUPT_MASK)
1595 dev_err(edac_dev->dev, "IOB PA transaction error\n");
1596 if (reg & IOBPA_M_TRANS_CORRUPT_MASK)
1597 dev_err(edac_dev->dev, "Multiple IOB PA transaction error\n");
1598 if (reg & IOBPA_REQIDRAM_CORRUPT_MASK)
1599 dev_err(edac_dev->dev, "IOB PA transaction ID RAM error\n");
1600 if (reg & IOBPA_M_REQIDRAM_CORRUPT_MASK)
1601 dev_err(edac_dev->dev,
1602 "Multiple IOB PA transaction ID RAM error\n");
1603 writel(reg, ctx->dev_csr + IOBPATRANSERRINTSTS);
1606 /* IOB AXI0 Error */
1607 reg = readl(ctx->dev_csr + IOBAXIS0TRANSERRINTSTS);
1610 err_addr_lo = readl(ctx->dev_csr + IOBAXIS0TRANSERRREQINFOL);
1611 err_addr_hi = readl(ctx->dev_csr + IOBAXIS0TRANSERRREQINFOH);
1612 dev_err(edac_dev->dev,
1613 "%sAXI slave 0 illegal %s access @ 0x%02X.%08X (0x%08X)\n",
1614 reg & IOBAXIS0_M_ILLEGAL_ACCESS_MASK ? "Multiple " : "",
1615 REQTYPE_RD(err_addr_hi) ? "read" : "write",
1616 ERRADDRH_RD(err_addr_hi), err_addr_lo, err_addr_hi);
1617 writel(reg, ctx->dev_csr + IOBAXIS0TRANSERRINTSTS);
1620 /* IOB AXI1 Error */
1621 reg = readl(ctx->dev_csr + IOBAXIS1TRANSERRINTSTS);
1624 err_addr_lo = readl(ctx->dev_csr + IOBAXIS1TRANSERRREQINFOL);
1625 err_addr_hi = readl(ctx->dev_csr + IOBAXIS1TRANSERRREQINFOH);
1626 dev_err(edac_dev->dev,
1627 "%sAXI slave 1 illegal %s access @ 0x%02X.%08X (0x%08X)\n",
1628 reg & IOBAXIS0_M_ILLEGAL_ACCESS_MASK ? "Multiple " : "",
1629 REQTYPE_RD(err_addr_hi) ? "read" : "write",
1630 ERRADDRH_RD(err_addr_hi), err_addr_lo, err_addr_hi);
1631 writel(reg, ctx->dev_csr + IOBAXIS1TRANSERRINTSTS);
1634 static void xgene_edac_soc_check(struct edac_device_ctl_info *edac_dev)
1636 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1637 const char * const *soc_mem_err = NULL;
1643 xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat);
1644 xgene_edac_pcp_rd(ctx->edac, PCPLPERRINTSTS, &pcp_lp_stat);
1645 xgene_edac_pcp_rd(ctx->edac, MEMERRINTSTS, ®);
1646 if (!((pcp_hp_stat & (IOB_PA_ERR_MASK | IOB_BA_ERR_MASK |
1647 IOB_XGIC_ERR_MASK | IOB_RB_ERR_MASK)) ||
1648 (pcp_lp_stat & CSW_SWITCH_TRACE_ERR_MASK) || reg))
1651 if (pcp_hp_stat & IOB_XGIC_ERR_MASK)
1652 xgene_edac_iob_gic_report(edac_dev);
1654 if (pcp_hp_stat & (IOB_RB_ERR_MASK | IOB_BA_ERR_MASK))
1655 xgene_edac_rb_report(edac_dev);
1657 if (pcp_hp_stat & IOB_PA_ERR_MASK)
1658 xgene_edac_pa_report(edac_dev);
1660 if (pcp_lp_stat & CSW_SWITCH_TRACE_ERR_MASK) {
1661 dev_info(edac_dev->dev,
1662 "CSW switch trace correctable memory parity error\n");
1663 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
1668 if (ctx->version == 1)
1669 soc_mem_err = soc_mem_err_v1;
1671 dev_err(edac_dev->dev, "SoC memory parity error 0x%08X\n",
1673 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
1676 for (i = 0; i < 31; i++) {
1677 if (reg & (1 << i)) {
1678 dev_err(edac_dev->dev, "%s memory parity error\n",
1680 edac_device_handle_ue(edac_dev, 0, 0,
1681 edac_dev->ctl_name);
1686 static void xgene_edac_soc_hw_init(struct edac_device_ctl_info *edac_dev,
1689 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1691 /* Enable SoC IP error interrupt */
1692 if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
1694 xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
1699 xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
1700 CSW_SWITCH_TRACE_ERR_MASK);
1702 xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
1707 xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
1708 CSW_SWITCH_TRACE_ERR_MASK);
1711 writel(enable ? 0x0 : 0xFFFFFFFF,
1712 ctx->dev_csr + IOBAXIS0TRANSERRINTMSK);
1713 writel(enable ? 0x0 : 0xFFFFFFFF,
1714 ctx->dev_csr + IOBAXIS1TRANSERRINTMSK);
1715 writel(enable ? 0x0 : 0xFFFFFFFF,
1716 ctx->dev_csr + XGICTRANSERRINTMSK);
1718 xgene_edac_pcp_setbits(ctx->edac, MEMERRINTMSK,
1719 enable ? 0x0 : 0xFFFFFFFF);
1723 static int xgene_edac_soc_add(struct xgene_edac *edac, struct device_node *np,
1726 struct edac_device_ctl_info *edac_dev;
1727 struct xgene_edac_dev_ctx *ctx;
1728 void __iomem *dev_csr;
1729 struct resource res;
1733 if (!devres_open_group(edac->dev, xgene_edac_soc_add, GFP_KERNEL))
1736 rc = of_address_to_resource(np, 0, &res);
1738 dev_err(edac->dev, "no SoC resource address\n");
1739 goto err_release_group;
1741 dev_csr = devm_ioremap_resource(edac->dev, &res);
1742 if (IS_ERR(dev_csr)) {
1744 "devm_ioremap_resource failed for soc resource address\n");
1745 rc = PTR_ERR(dev_csr);
1746 goto err_release_group;
1749 edac_idx = edac_device_alloc_index();
1750 edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
1751 "SOC", 1, "SOC", 1, 2, NULL, 0,
1755 goto err_release_group;
1758 ctx = edac_dev->pvt_info;
1759 ctx->dev_csr = dev_csr;
1760 ctx->name = "xgene_soc_err";
1761 ctx->edac_idx = edac_idx;
1763 ctx->edac_dev = edac_dev;
1764 ctx->ddev = *edac->dev;
1765 ctx->version = version;
1766 edac_dev->dev = &ctx->ddev;
1767 edac_dev->ctl_name = ctx->name;
1768 edac_dev->dev_name = ctx->name;
1769 edac_dev->mod_name = EDAC_MOD_STR;
1771 if (edac_op_state == EDAC_OPSTATE_POLL)
1772 edac_dev->edac_check = xgene_edac_soc_check;
1774 rc = edac_device_add_device(edac_dev);
1776 dev_err(edac->dev, "failed edac_device_add_device()\n");
1781 if (edac_op_state == EDAC_OPSTATE_INT)
1782 edac_dev->op_state = OP_RUNNING_INTERRUPT;
1784 list_add(&ctx->next, &edac->socs);
1786 xgene_edac_soc_hw_init(edac_dev, 1);
1788 devres_remove_group(edac->dev, xgene_edac_soc_add);
1790 dev_info(edac->dev, "X-Gene EDAC SoC registered\n");
1795 edac_device_free_ctl_info(edac_dev);
1797 devres_release_group(edac->dev, xgene_edac_soc_add);
1801 static int xgene_edac_soc_remove(struct xgene_edac_dev_ctx *soc)
1803 struct edac_device_ctl_info *edac_dev = soc->edac_dev;
1805 xgene_edac_soc_hw_init(edac_dev, 0);
1806 edac_device_del_device(soc->edac->dev);
1807 edac_device_free_ctl_info(edac_dev);
1811 static irqreturn_t xgene_edac_isr(int irq, void *dev_id)
1813 struct xgene_edac *ctx = dev_id;
1814 struct xgene_edac_pmd_ctx *pmd;
1815 struct xgene_edac_dev_ctx *node;
1816 unsigned int pcp_hp_stat;
1817 unsigned int pcp_lp_stat;
1819 xgene_edac_pcp_rd(ctx, PCPHPERRINTSTS, &pcp_hp_stat);
1820 xgene_edac_pcp_rd(ctx, PCPLPERRINTSTS, &pcp_lp_stat);
1821 if ((MCU_UNCORR_ERR_MASK & pcp_hp_stat) ||
1822 (MCU_CTL_ERR_MASK & pcp_hp_stat) ||
1823 (MCU_CORR_ERR_MASK & pcp_lp_stat)) {
1824 struct xgene_edac_mc_ctx *mcu;
1826 list_for_each_entry(mcu, &ctx->mcus, next)
1827 xgene_edac_mc_check(mcu->mci);
1830 list_for_each_entry(pmd, &ctx->pmds, next) {
1831 if ((PMD0_MERR_MASK << pmd->pmd) & pcp_hp_stat)
1832 xgene_edac_pmd_check(pmd->edac_dev);
1835 list_for_each_entry(node, &ctx->l3s, next)
1836 xgene_edac_l3_check(node->edac_dev);
1838 list_for_each_entry(node, &ctx->socs, next)
1839 xgene_edac_soc_check(node->edac_dev);
1844 static int xgene_edac_probe(struct platform_device *pdev)
1846 struct xgene_edac *edac;
1847 struct device_node *child;
1848 struct resource *res;
1851 edac = devm_kzalloc(&pdev->dev, sizeof(*edac), GFP_KERNEL);
1855 edac->dev = &pdev->dev;
1856 platform_set_drvdata(pdev, edac);
1857 INIT_LIST_HEAD(&edac->mcus);
1858 INIT_LIST_HEAD(&edac->pmds);
1859 INIT_LIST_HEAD(&edac->l3s);
1860 INIT_LIST_HEAD(&edac->socs);
1861 spin_lock_init(&edac->lock);
1862 mutex_init(&edac->mc_lock);
1864 edac->csw_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1866 if (IS_ERR(edac->csw_map)) {
1867 dev_err(edac->dev, "unable to get syscon regmap csw\n");
1868 rc = PTR_ERR(edac->csw_map);
1872 edac->mcba_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1874 if (IS_ERR(edac->mcba_map)) {
1875 dev_err(edac->dev, "unable to get syscon regmap mcba\n");
1876 rc = PTR_ERR(edac->mcba_map);
1880 edac->mcbb_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1882 if (IS_ERR(edac->mcbb_map)) {
1883 dev_err(edac->dev, "unable to get syscon regmap mcbb\n");
1884 rc = PTR_ERR(edac->mcbb_map);
1887 edac->efuse_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1889 if (IS_ERR(edac->efuse_map)) {
1890 dev_err(edac->dev, "unable to get syscon regmap efuse\n");
1891 rc = PTR_ERR(edac->efuse_map);
1896 * NOTE: The register bus resource is optional for compatibility
1899 edac->rb_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1901 if (IS_ERR(edac->rb_map)) {
1902 dev_warn(edac->dev, "missing syscon regmap rb\n");
1903 edac->rb_map = NULL;
1906 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1907 edac->pcp_csr = devm_ioremap_resource(&pdev->dev, res);
1908 if (IS_ERR(edac->pcp_csr)) {
1909 dev_err(&pdev->dev, "no PCP resource address\n");
1910 rc = PTR_ERR(edac->pcp_csr);
1914 if (edac_op_state == EDAC_OPSTATE_INT) {
1918 for (i = 0; i < 3; i++) {
1919 irq = platform_get_irq_optional(pdev, i);
1921 dev_err(&pdev->dev, "No IRQ resource\n");
1925 rc = devm_request_irq(&pdev->dev, irq,
1926 xgene_edac_isr, IRQF_SHARED,
1927 dev_name(&pdev->dev), edac);
1930 "Could not request IRQ %d\n", irq);
1936 edac->dfs = edac_debugfs_create_dir(pdev->dev.kobj.name);
1938 for_each_child_of_node(pdev->dev.of_node, child) {
1939 if (!of_device_is_available(child))
1941 if (of_device_is_compatible(child, "apm,xgene-edac-mc"))
1942 xgene_edac_mc_add(edac, child);
1943 if (of_device_is_compatible(child, "apm,xgene-edac-pmd"))
1944 xgene_edac_pmd_add(edac, child, 1);
1945 if (of_device_is_compatible(child, "apm,xgene-edac-pmd-v2"))
1946 xgene_edac_pmd_add(edac, child, 2);
1947 if (of_device_is_compatible(child, "apm,xgene-edac-l3"))
1948 xgene_edac_l3_add(edac, child, 1);
1949 if (of_device_is_compatible(child, "apm,xgene-edac-l3-v2"))
1950 xgene_edac_l3_add(edac, child, 2);
1951 if (of_device_is_compatible(child, "apm,xgene-edac-soc"))
1952 xgene_edac_soc_add(edac, child, 0);
1953 if (of_device_is_compatible(child, "apm,xgene-edac-soc-v1"))
1954 xgene_edac_soc_add(edac, child, 1);
1963 static int xgene_edac_remove(struct platform_device *pdev)
1965 struct xgene_edac *edac = dev_get_drvdata(&pdev->dev);
1966 struct xgene_edac_mc_ctx *mcu;
1967 struct xgene_edac_mc_ctx *temp_mcu;
1968 struct xgene_edac_pmd_ctx *pmd;
1969 struct xgene_edac_pmd_ctx *temp_pmd;
1970 struct xgene_edac_dev_ctx *node;
1971 struct xgene_edac_dev_ctx *temp_node;
1973 list_for_each_entry_safe(mcu, temp_mcu, &edac->mcus, next)
1974 xgene_edac_mc_remove(mcu);
1976 list_for_each_entry_safe(pmd, temp_pmd, &edac->pmds, next)
1977 xgene_edac_pmd_remove(pmd);
1979 list_for_each_entry_safe(node, temp_node, &edac->l3s, next)
1980 xgene_edac_l3_remove(node);
1982 list_for_each_entry_safe(node, temp_node, &edac->socs, next)
1983 xgene_edac_soc_remove(node);
1988 static const struct of_device_id xgene_edac_of_match[] = {
1989 { .compatible = "apm,xgene-edac" },
1992 MODULE_DEVICE_TABLE(of, xgene_edac_of_match);
1994 static struct platform_driver xgene_edac_driver = {
1995 .probe = xgene_edac_probe,
1996 .remove = xgene_edac_remove,
1998 .name = "xgene-edac",
1999 .of_match_table = xgene_edac_of_match,
2003 static int __init xgene_edac_init(void)
2007 /* Make sure error reporting method is sane */
2008 switch (edac_op_state) {
2009 case EDAC_OPSTATE_POLL:
2010 case EDAC_OPSTATE_INT:
2013 edac_op_state = EDAC_OPSTATE_INT;
2017 rc = platform_driver_register(&xgene_edac_driver);
2019 edac_printk(KERN_ERR, EDAC_MOD_STR,
2020 "EDAC fails to register\n");
2029 module_init(xgene_edac_init);
2031 static void __exit xgene_edac_exit(void)
2033 platform_driver_unregister(&xgene_edac_driver);
2035 module_exit(xgene_edac_exit);
2037 MODULE_LICENSE("GPL");
2038 MODULE_AUTHOR("Feng Kan <fkan@apm.com>");
2039 MODULE_DESCRIPTION("APM X-Gene EDAC driver");
2040 module_param(edac_op_state, int, 0444);
2041 MODULE_PARM_DESC(edac_op_state,
2042 "EDAC error reporting state: 0=Poll, 2=Interrupt");