2 * APM X-Gene SoC EDAC (error detection and correction)
4 * Copyright (c) 2015, Applied Micro Circuits Corporation
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_module.h"
33 #define EDAC_MOD_STR "xgene_edac"
35 /* Global error configuration status registers (CSR) */
36 #define PCPHPERRINTSTS 0x0000
37 #define PCPHPERRINTMSK 0x0004
38 #define MCU_CTL_ERR_MASK BIT(12)
39 #define IOB_PA_ERR_MASK BIT(11)
40 #define IOB_BA_ERR_MASK BIT(10)
41 #define IOB_XGIC_ERR_MASK BIT(9)
42 #define IOB_RB_ERR_MASK BIT(8)
43 #define L3C_UNCORR_ERR_MASK BIT(5)
44 #define MCU_UNCORR_ERR_MASK BIT(4)
45 #define PMD3_MERR_MASK BIT(3)
46 #define PMD2_MERR_MASK BIT(2)
47 #define PMD1_MERR_MASK BIT(1)
48 #define PMD0_MERR_MASK BIT(0)
49 #define PCPLPERRINTSTS 0x0008
50 #define PCPLPERRINTMSK 0x000C
51 #define CSW_SWITCH_TRACE_ERR_MASK BIT(2)
52 #define L3C_CORR_ERR_MASK BIT(1)
53 #define MCU_CORR_ERR_MASK BIT(0)
54 #define MEMERRINTSTS 0x0010
55 #define MEMERRINTMSK 0x0014
59 struct regmap *csw_map;
60 struct regmap *mcba_map;
61 struct regmap *mcbb_map;
62 struct regmap *efuse_map;
63 struct regmap *rb_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->ctl_page_to_phys = NULL;
419 mci->scrub_cap = SCRUB_FLAG_HW_SRC;
420 mci->scrub_mode = SCRUB_HW_SRC;
422 if (edac_op_state == EDAC_OPSTATE_POLL)
423 mci->edac_check = xgene_edac_mc_check;
425 if (edac_mc_add_mc(mci)) {
426 dev_err(edac->dev, "edac_mc_add_mc failed\n");
431 xgene_edac_mc_create_debugfs_node(mci);
433 list_add(&ctx->next, &edac->mcus);
435 xgene_edac_mc_irq_ctl(mci, true);
437 devres_remove_group(edac->dev, xgene_edac_mc_add);
439 dev_info(edac->dev, "X-Gene EDAC MC registered\n");
445 devres_release_group(edac->dev, xgene_edac_mc_add);
449 static int xgene_edac_mc_remove(struct xgene_edac_mc_ctx *mcu)
451 xgene_edac_mc_irq_ctl(mcu->mci, false);
452 edac_mc_del_mc(&mcu->mci->dev);
453 edac_mc_free(mcu->mci);
457 /* CPU L1/L2 error CSR */
458 #define MAX_CPU_PER_PMD 2
459 #define CPU_CSR_STRIDE 0x00100000
460 #define CPU_L2C_PAGE 0x000D0000
461 #define CPU_MEMERR_L2C_PAGE 0x000E0000
462 #define CPU_MEMERR_CPU_PAGE 0x000F0000
464 #define MEMERR_CPU_ICFECR_PAGE_OFFSET 0x0000
465 #define MEMERR_CPU_ICFESR_PAGE_OFFSET 0x0004
466 #define MEMERR_CPU_ICFESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24)
467 #define MEMERR_CPU_ICFESR_ERRINDEX_RD(src) (((src) & 0x003F0000) >> 16)
468 #define MEMERR_CPU_ICFESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8)
469 #define MEMERR_CPU_ICFESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4)
470 #define MEMERR_CPU_ICFESR_MULTCERR_MASK BIT(2)
471 #define MEMERR_CPU_ICFESR_CERR_MASK BIT(0)
472 #define MEMERR_CPU_LSUESR_PAGE_OFFSET 0x000c
473 #define MEMERR_CPU_LSUESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24)
474 #define MEMERR_CPU_LSUESR_ERRINDEX_RD(src) (((src) & 0x003F0000) >> 16)
475 #define MEMERR_CPU_LSUESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8)
476 #define MEMERR_CPU_LSUESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4)
477 #define MEMERR_CPU_LSUESR_MULTCERR_MASK BIT(2)
478 #define MEMERR_CPU_LSUESR_CERR_MASK BIT(0)
479 #define MEMERR_CPU_LSUECR_PAGE_OFFSET 0x0008
480 #define MEMERR_CPU_MMUECR_PAGE_OFFSET 0x0010
481 #define MEMERR_CPU_MMUESR_PAGE_OFFSET 0x0014
482 #define MEMERR_CPU_MMUESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24)
483 #define MEMERR_CPU_MMUESR_ERRINDEX_RD(src) (((src) & 0x007F0000) >> 16)
484 #define MEMERR_CPU_MMUESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8)
485 #define MEMERR_CPU_MMUESR_ERRREQSTR_LSU_MASK BIT(7)
486 #define MEMERR_CPU_MMUESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4)
487 #define MEMERR_CPU_MMUESR_MULTCERR_MASK BIT(2)
488 #define MEMERR_CPU_MMUESR_CERR_MASK BIT(0)
489 #define MEMERR_CPU_ICFESRA_PAGE_OFFSET 0x0804
490 #define MEMERR_CPU_LSUESRA_PAGE_OFFSET 0x080c
491 #define MEMERR_CPU_MMUESRA_PAGE_OFFSET 0x0814
493 #define MEMERR_L2C_L2ECR_PAGE_OFFSET 0x0000
494 #define MEMERR_L2C_L2ESR_PAGE_OFFSET 0x0004
495 #define MEMERR_L2C_L2ESR_ERRSYN_RD(src) (((src) & 0xFF000000) >> 24)
496 #define MEMERR_L2C_L2ESR_ERRWAY_RD(src) (((src) & 0x00FC0000) >> 18)
497 #define MEMERR_L2C_L2ESR_ERRCPU_RD(src) (((src) & 0x00020000) >> 17)
498 #define MEMERR_L2C_L2ESR_ERRGROUP_RD(src) (((src) & 0x0000E000) >> 13)
499 #define MEMERR_L2C_L2ESR_ERRACTION_RD(src) (((src) & 0x00001C00) >> 10)
500 #define MEMERR_L2C_L2ESR_ERRTYPE_RD(src) (((src) & 0x00000300) >> 8)
501 #define MEMERR_L2C_L2ESR_MULTUCERR_MASK BIT(3)
502 #define MEMERR_L2C_L2ESR_MULTICERR_MASK BIT(2)
503 #define MEMERR_L2C_L2ESR_UCERR_MASK BIT(1)
504 #define MEMERR_L2C_L2ESR_ERR_MASK BIT(0)
505 #define MEMERR_L2C_L2EALR_PAGE_OFFSET 0x0008
506 #define CPUX_L2C_L2RTOCR_PAGE_OFFSET 0x0010
507 #define MEMERR_L2C_L2EAHR_PAGE_OFFSET 0x000c
508 #define CPUX_L2C_L2RTOSR_PAGE_OFFSET 0x0014
509 #define MEMERR_L2C_L2RTOSR_MULTERR_MASK BIT(1)
510 #define MEMERR_L2C_L2RTOSR_ERR_MASK BIT(0)
511 #define CPUX_L2C_L2RTOALR_PAGE_OFFSET 0x0018
512 #define CPUX_L2C_L2RTOAHR_PAGE_OFFSET 0x001c
513 #define MEMERR_L2C_L2ESRA_PAGE_OFFSET 0x0804
516 * Processor Module Domain (PMD) context - Context for a pair of processsors.
517 * Each PMD consists of 2 CPUs and a shared L2 cache. Each CPU consists of
520 struct xgene_edac_pmd_ctx {
521 struct list_head next;
524 struct xgene_edac *edac;
525 struct edac_device_ctl_info *edac_dev;
526 void __iomem *pmd_csr;
531 static void xgene_edac_pmd_l1_check(struct edac_device_ctl_info *edac_dev,
534 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
538 pg_f = ctx->pmd_csr + cpu_idx * CPU_CSR_STRIDE + CPU_MEMERR_CPU_PAGE;
540 val = readl(pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET);
543 dev_err(edac_dev->dev,
544 "CPU%d L1 memory error ICF 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n",
545 ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val,
546 MEMERR_CPU_ICFESR_ERRWAY_RD(val),
547 MEMERR_CPU_ICFESR_ERRINDEX_RD(val),
548 MEMERR_CPU_ICFESR_ERRINFO_RD(val));
549 if (val & MEMERR_CPU_ICFESR_CERR_MASK)
550 dev_err(edac_dev->dev, "One or more correctable error\n");
551 if (val & MEMERR_CPU_ICFESR_MULTCERR_MASK)
552 dev_err(edac_dev->dev, "Multiple correctable error\n");
553 switch (MEMERR_CPU_ICFESR_ERRTYPE_RD(val)) {
555 dev_err(edac_dev->dev, "L1 TLB multiple hit\n");
558 dev_err(edac_dev->dev, "Way select multiple hit\n");
561 dev_err(edac_dev->dev, "Physical tag parity error\n");
565 dev_err(edac_dev->dev, "L1 data parity error\n");
568 dev_err(edac_dev->dev, "L1 pre-decode parity error\n");
572 /* Clear any HW errors */
573 writel(val, pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET);
575 if (val & (MEMERR_CPU_ICFESR_CERR_MASK |
576 MEMERR_CPU_ICFESR_MULTCERR_MASK))
577 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
580 val = readl(pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET);
583 dev_err(edac_dev->dev,
584 "CPU%d memory error LSU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n",
585 ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val,
586 MEMERR_CPU_LSUESR_ERRWAY_RD(val),
587 MEMERR_CPU_LSUESR_ERRINDEX_RD(val),
588 MEMERR_CPU_LSUESR_ERRINFO_RD(val));
589 if (val & MEMERR_CPU_LSUESR_CERR_MASK)
590 dev_err(edac_dev->dev, "One or more correctable error\n");
591 if (val & MEMERR_CPU_LSUESR_MULTCERR_MASK)
592 dev_err(edac_dev->dev, "Multiple correctable error\n");
593 switch (MEMERR_CPU_LSUESR_ERRTYPE_RD(val)) {
595 dev_err(edac_dev->dev, "Load tag error\n");
598 dev_err(edac_dev->dev, "Load data error\n");
601 dev_err(edac_dev->dev, "WSL multihit error\n");
604 dev_err(edac_dev->dev, "Store tag error\n");
607 dev_err(edac_dev->dev,
608 "DTB multihit from load pipeline error\n");
611 dev_err(edac_dev->dev,
612 "DTB multihit from store pipeline error\n");
616 /* Clear any HW errors */
617 writel(val, pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET);
619 if (val & (MEMERR_CPU_LSUESR_CERR_MASK |
620 MEMERR_CPU_LSUESR_MULTCERR_MASK))
621 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
624 val = readl(pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET);
627 dev_err(edac_dev->dev,
628 "CPU%d memory error MMU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X %s\n",
629 ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val,
630 MEMERR_CPU_MMUESR_ERRWAY_RD(val),
631 MEMERR_CPU_MMUESR_ERRINDEX_RD(val),
632 MEMERR_CPU_MMUESR_ERRINFO_RD(val),
633 val & MEMERR_CPU_MMUESR_ERRREQSTR_LSU_MASK ? "LSU" : "ICF");
634 if (val & MEMERR_CPU_MMUESR_CERR_MASK)
635 dev_err(edac_dev->dev, "One or more correctable error\n");
636 if (val & MEMERR_CPU_MMUESR_MULTCERR_MASK)
637 dev_err(edac_dev->dev, "Multiple correctable error\n");
638 switch (MEMERR_CPU_MMUESR_ERRTYPE_RD(val)) {
640 dev_err(edac_dev->dev, "Stage 1 UTB hit error\n");
643 dev_err(edac_dev->dev, "Stage 1 UTB miss error\n");
646 dev_err(edac_dev->dev, "Stage 1 UTB allocate error\n");
649 dev_err(edac_dev->dev, "TMO operation single bank error\n");
652 dev_err(edac_dev->dev, "Stage 2 UTB error\n");
655 dev_err(edac_dev->dev, "Stage 2 UTB miss error\n");
658 dev_err(edac_dev->dev, "Stage 2 UTB allocate error\n");
661 dev_err(edac_dev->dev, "TMO operation multiple bank error\n");
665 /* Clear any HW errors */
666 writel(val, pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET);
668 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
671 static void xgene_edac_pmd_l2_check(struct edac_device_ctl_info *edac_dev)
673 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
681 pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE;
682 val = readl(pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET);
685 val_lo = readl(pg_e + MEMERR_L2C_L2EALR_PAGE_OFFSET);
686 val_hi = readl(pg_e + MEMERR_L2C_L2EAHR_PAGE_OFFSET);
687 dev_err(edac_dev->dev,
688 "PMD%d memory error L2C L2ESR 0x%08X @ 0x%08X.%08X\n",
689 ctx->pmd, val, val_hi, val_lo);
690 dev_err(edac_dev->dev,
691 "ErrSyndrome 0x%02X ErrWay 0x%02X ErrCpu %d ErrGroup 0x%02X ErrAction 0x%02X\n",
692 MEMERR_L2C_L2ESR_ERRSYN_RD(val),
693 MEMERR_L2C_L2ESR_ERRWAY_RD(val),
694 MEMERR_L2C_L2ESR_ERRCPU_RD(val),
695 MEMERR_L2C_L2ESR_ERRGROUP_RD(val),
696 MEMERR_L2C_L2ESR_ERRACTION_RD(val));
698 if (val & MEMERR_L2C_L2ESR_ERR_MASK)
699 dev_err(edac_dev->dev, "One or more correctable error\n");
700 if (val & MEMERR_L2C_L2ESR_MULTICERR_MASK)
701 dev_err(edac_dev->dev, "Multiple correctable error\n");
702 if (val & MEMERR_L2C_L2ESR_UCERR_MASK)
703 dev_err(edac_dev->dev, "One or more uncorrectable error\n");
704 if (val & MEMERR_L2C_L2ESR_MULTUCERR_MASK)
705 dev_err(edac_dev->dev, "Multiple uncorrectable error\n");
707 switch (MEMERR_L2C_L2ESR_ERRTYPE_RD(val)) {
709 dev_err(edac_dev->dev, "Outbound SDB parity error\n");
712 dev_err(edac_dev->dev, "Inbound SDB parity error\n");
715 dev_err(edac_dev->dev, "Tag ECC error\n");
718 dev_err(edac_dev->dev, "Data ECC error\n");
722 /* Clear any HW errors */
723 writel(val, pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET);
725 if (val & (MEMERR_L2C_L2ESR_ERR_MASK |
726 MEMERR_L2C_L2ESR_MULTICERR_MASK))
727 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
728 if (val & (MEMERR_L2C_L2ESR_UCERR_MASK |
729 MEMERR_L2C_L2ESR_MULTUCERR_MASK))
730 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
733 /* Check if any memory request timed out on L2 cache */
734 pg_d = ctx->pmd_csr + CPU_L2C_PAGE;
735 val = readl(pg_d + CPUX_L2C_L2RTOSR_PAGE_OFFSET);
737 val_lo = readl(pg_d + CPUX_L2C_L2RTOALR_PAGE_OFFSET);
738 val_hi = readl(pg_d + CPUX_L2C_L2RTOAHR_PAGE_OFFSET);
739 dev_err(edac_dev->dev,
740 "PMD%d L2C error L2C RTOSR 0x%08X @ 0x%08X.%08X\n",
741 ctx->pmd, val, val_hi, val_lo);
742 writel(val, pg_d + CPUX_L2C_L2RTOSR_PAGE_OFFSET);
746 static void xgene_edac_pmd_check(struct edac_device_ctl_info *edac_dev)
748 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
749 unsigned int pcp_hp_stat;
752 xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat);
753 if (!((PMD0_MERR_MASK << ctx->pmd) & pcp_hp_stat))
756 /* Check CPU L1 error */
757 for (i = 0; i < MAX_CPU_PER_PMD; i++)
758 xgene_edac_pmd_l1_check(edac_dev, i);
760 /* Check CPU L2 error */
761 xgene_edac_pmd_l2_check(edac_dev);
764 static void xgene_edac_pmd_cpu_hw_cfg(struct edac_device_ctl_info *edac_dev,
767 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
768 void __iomem *pg_f = ctx->pmd_csr + cpu * CPU_CSR_STRIDE +
772 * Enable CPU memory error:
773 * MEMERR_CPU_ICFESRA, MEMERR_CPU_LSUESRA, and MEMERR_CPU_MMUESRA
775 writel(0x00000301, pg_f + MEMERR_CPU_ICFECR_PAGE_OFFSET);
776 writel(0x00000301, pg_f + MEMERR_CPU_LSUECR_PAGE_OFFSET);
777 writel(0x00000101, pg_f + MEMERR_CPU_MMUECR_PAGE_OFFSET);
780 static void xgene_edac_pmd_hw_cfg(struct edac_device_ctl_info *edac_dev)
782 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
783 void __iomem *pg_d = ctx->pmd_csr + CPU_L2C_PAGE;
784 void __iomem *pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE;
786 /* Enable PMD memory error - MEMERR_L2C_L2ECR and L2C_L2RTOCR */
787 writel(0x00000703, pg_e + MEMERR_L2C_L2ECR_PAGE_OFFSET);
788 /* Configure L2C HW request time out feature if supported */
789 if (ctx->version > 1)
790 writel(0x00000119, pg_d + CPUX_L2C_L2RTOCR_PAGE_OFFSET);
793 static void xgene_edac_pmd_hw_ctl(struct edac_device_ctl_info *edac_dev,
796 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
799 /* Enable PMD error interrupt */
800 if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
802 xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
803 PMD0_MERR_MASK << ctx->pmd);
805 xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
806 PMD0_MERR_MASK << ctx->pmd);
810 xgene_edac_pmd_hw_cfg(edac_dev);
812 /* Two CPUs per a PMD */
813 for (i = 0; i < MAX_CPU_PER_PMD; i++)
814 xgene_edac_pmd_cpu_hw_cfg(edac_dev, i);
818 static ssize_t xgene_edac_pmd_l1_inject_ctrl_write(struct file *file,
819 const char __user *data,
820 size_t count, loff_t *ppos)
822 struct edac_device_ctl_info *edac_dev = file->private_data;
823 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
824 void __iomem *cpux_pg_f;
827 for (i = 0; i < MAX_CPU_PER_PMD; i++) {
828 cpux_pg_f = ctx->pmd_csr + i * CPU_CSR_STRIDE +
831 writel(MEMERR_CPU_ICFESR_MULTCERR_MASK |
832 MEMERR_CPU_ICFESR_CERR_MASK,
833 cpux_pg_f + MEMERR_CPU_ICFESRA_PAGE_OFFSET);
834 writel(MEMERR_CPU_LSUESR_MULTCERR_MASK |
835 MEMERR_CPU_LSUESR_CERR_MASK,
836 cpux_pg_f + MEMERR_CPU_LSUESRA_PAGE_OFFSET);
837 writel(MEMERR_CPU_MMUESR_MULTCERR_MASK |
838 MEMERR_CPU_MMUESR_CERR_MASK,
839 cpux_pg_f + MEMERR_CPU_MMUESRA_PAGE_OFFSET);
844 static ssize_t xgene_edac_pmd_l2_inject_ctrl_write(struct file *file,
845 const char __user *data,
846 size_t count, loff_t *ppos)
848 struct edac_device_ctl_info *edac_dev = file->private_data;
849 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
850 void __iomem *pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE;
852 writel(MEMERR_L2C_L2ESR_MULTUCERR_MASK |
853 MEMERR_L2C_L2ESR_MULTICERR_MASK |
854 MEMERR_L2C_L2ESR_UCERR_MASK |
855 MEMERR_L2C_L2ESR_ERR_MASK,
856 pg_e + MEMERR_L2C_L2ESRA_PAGE_OFFSET);
860 static const struct file_operations xgene_edac_pmd_debug_inject_fops[] = {
863 .write = xgene_edac_pmd_l1_inject_ctrl_write,
864 .llseek = generic_file_llseek, },
867 .write = xgene_edac_pmd_l2_inject_ctrl_write,
868 .llseek = generic_file_llseek, },
873 xgene_edac_pmd_create_debugfs_nodes(struct edac_device_ctl_info *edac_dev)
875 struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
876 struct dentry *dbgfs_dir;
879 if (!IS_ENABLED(CONFIG_EDAC_DEBUG) || !ctx->edac->dfs)
882 snprintf(name, sizeof(name), "PMD%d", ctx->pmd);
883 dbgfs_dir = edac_debugfs_create_dir_at(name, ctx->edac->dfs);
887 edac_debugfs_create_file("l1_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev,
888 &xgene_edac_pmd_debug_inject_fops[0]);
889 edac_debugfs_create_file("l2_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev,
890 &xgene_edac_pmd_debug_inject_fops[1]);
893 static int xgene_edac_pmd_available(u32 efuse, int pmd)
895 return (efuse & (1 << pmd)) ? 0 : 1;
898 static int xgene_edac_pmd_add(struct xgene_edac *edac, struct device_node *np,
901 struct edac_device_ctl_info *edac_dev;
902 struct xgene_edac_pmd_ctx *ctx;
909 if (!devres_open_group(edac->dev, xgene_edac_pmd_add, GFP_KERNEL))
912 /* Determine if this PMD is disabled */
913 if (of_property_read_u32(np, "pmd-controller", &pmd)) {
914 dev_err(edac->dev, "no pmd-controller property\n");
918 rc = regmap_read(edac->efuse_map, 0, &val);
921 if (!xgene_edac_pmd_available(val, pmd)) {
926 snprintf(edac_name, sizeof(edac_name), "l2c%d", pmd);
927 edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
928 edac_name, 1, "l2c", 1, 2, NULL,
929 0, edac_device_alloc_index());
935 ctx = edac_dev->pvt_info;
936 ctx->name = "xgene_pmd_err";
939 ctx->edac_dev = edac_dev;
940 ctx->ddev = *edac->dev;
941 ctx->version = version;
942 edac_dev->dev = &ctx->ddev;
943 edac_dev->ctl_name = ctx->name;
944 edac_dev->dev_name = ctx->name;
945 edac_dev->mod_name = EDAC_MOD_STR;
947 rc = of_address_to_resource(np, 0, &res);
949 dev_err(edac->dev, "no PMD resource address\n");
952 ctx->pmd_csr = devm_ioremap_resource(edac->dev, &res);
953 if (IS_ERR(ctx->pmd_csr)) {
955 "devm_ioremap_resource failed for PMD resource address\n");
956 rc = PTR_ERR(ctx->pmd_csr);
960 if (edac_op_state == EDAC_OPSTATE_POLL)
961 edac_dev->edac_check = xgene_edac_pmd_check;
963 xgene_edac_pmd_create_debugfs_nodes(edac_dev);
965 rc = edac_device_add_device(edac_dev);
967 dev_err(edac->dev, "edac_device_add_device failed\n");
972 if (edac_op_state == EDAC_OPSTATE_INT)
973 edac_dev->op_state = OP_RUNNING_INTERRUPT;
975 list_add(&ctx->next, &edac->pmds);
977 xgene_edac_pmd_hw_ctl(edac_dev, 1);
979 devres_remove_group(edac->dev, xgene_edac_pmd_add);
981 dev_info(edac->dev, "X-Gene EDAC PMD%d registered\n", ctx->pmd);
985 edac_device_free_ctl_info(edac_dev);
987 devres_release_group(edac->dev, xgene_edac_pmd_add);
991 static int xgene_edac_pmd_remove(struct xgene_edac_pmd_ctx *pmd)
993 struct edac_device_ctl_info *edac_dev = pmd->edac_dev;
995 xgene_edac_pmd_hw_ctl(edac_dev, 0);
996 edac_device_del_device(edac_dev->dev);
997 edac_device_free_ctl_info(edac_dev);
1001 /* L3 Error device */
1002 #define L3C_ESR (0x0A * 4)
1003 #define L3C_ESR_DATATAG_MASK BIT(9)
1004 #define L3C_ESR_MULTIHIT_MASK BIT(8)
1005 #define L3C_ESR_UCEVICT_MASK BIT(6)
1006 #define L3C_ESR_MULTIUCERR_MASK BIT(5)
1007 #define L3C_ESR_MULTICERR_MASK BIT(4)
1008 #define L3C_ESR_UCERR_MASK BIT(3)
1009 #define L3C_ESR_CERR_MASK BIT(2)
1010 #define L3C_ESR_UCERRINTR_MASK BIT(1)
1011 #define L3C_ESR_CERRINTR_MASK BIT(0)
1012 #define L3C_ECR (0x0B * 4)
1013 #define L3C_ECR_UCINTREN BIT(3)
1014 #define L3C_ECR_CINTREN BIT(2)
1015 #define L3C_UCERREN BIT(1)
1016 #define L3C_CERREN BIT(0)
1017 #define L3C_ELR (0x0C * 4)
1018 #define L3C_ELR_ERRSYN(src) ((src & 0xFF800000) >> 23)
1019 #define L3C_ELR_ERRWAY(src) ((src & 0x007E0000) >> 17)
1020 #define L3C_ELR_AGENTID(src) ((src & 0x0001E000) >> 13)
1021 #define L3C_ELR_ERRGRP(src) ((src & 0x00000F00) >> 8)
1022 #define L3C_ELR_OPTYPE(src) ((src & 0x000000F0) >> 4)
1023 #define L3C_ELR_PADDRHIGH(src) (src & 0x0000000F)
1024 #define L3C_AELR (0x0D * 4)
1025 #define L3C_BELR (0x0E * 4)
1026 #define L3C_BELR_BANK(src) (src & 0x0000000F)
1028 struct xgene_edac_dev_ctx {
1029 struct list_head next;
1032 struct xgene_edac *edac;
1033 struct edac_device_ctl_info *edac_dev;
1035 void __iomem *dev_csr;
1040 * Version 1 of the L3 controller has broken single bit correctable logic for
1041 * certain error syndromes. Log them as uncorrectable in that case.
1043 static bool xgene_edac_l3_promote_to_uc_err(u32 l3cesr, u32 l3celr)
1045 if (l3cesr & L3C_ESR_DATATAG_MASK) {
1046 switch (L3C_ELR_ERRSYN(l3celr)) {
1059 } else if (L3C_ELR_ERRWAY(l3celr) == 9)
1065 static void xgene_edac_l3_check(struct edac_device_ctl_info *edac_dev)
1067 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1073 l3cesr = readl(ctx->dev_csr + L3C_ESR);
1074 if (!(l3cesr & (L3C_ESR_UCERR_MASK | L3C_ESR_CERR_MASK)))
1077 if (l3cesr & L3C_ESR_UCERR_MASK)
1078 dev_err(edac_dev->dev, "L3C uncorrectable error\n");
1079 if (l3cesr & L3C_ESR_CERR_MASK)
1080 dev_warn(edac_dev->dev, "L3C correctable error\n");
1082 l3celr = readl(ctx->dev_csr + L3C_ELR);
1083 l3caelr = readl(ctx->dev_csr + L3C_AELR);
1084 l3cbelr = readl(ctx->dev_csr + L3C_BELR);
1085 if (l3cesr & L3C_ESR_MULTIHIT_MASK)
1086 dev_err(edac_dev->dev, "L3C multiple hit error\n");
1087 if (l3cesr & L3C_ESR_UCEVICT_MASK)
1088 dev_err(edac_dev->dev,
1089 "L3C dropped eviction of line with error\n");
1090 if (l3cesr & L3C_ESR_MULTIUCERR_MASK)
1091 dev_err(edac_dev->dev, "L3C multiple uncorrectable error\n");
1092 if (l3cesr & L3C_ESR_DATATAG_MASK)
1093 dev_err(edac_dev->dev,
1094 "L3C data error syndrome 0x%X group 0x%X\n",
1095 L3C_ELR_ERRSYN(l3celr), L3C_ELR_ERRGRP(l3celr));
1097 dev_err(edac_dev->dev,
1098 "L3C tag error syndrome 0x%X Way of Tag 0x%X Agent ID 0x%X Operation type 0x%X\n",
1099 L3C_ELR_ERRSYN(l3celr), L3C_ELR_ERRWAY(l3celr),
1100 L3C_ELR_AGENTID(l3celr), L3C_ELR_OPTYPE(l3celr));
1102 * NOTE: Address [41:38] in L3C_ELR_PADDRHIGH(l3celr).
1103 * Address [37:6] in l3caelr. Lower 6 bits are zero.
1105 dev_err(edac_dev->dev, "L3C error address 0x%08X.%08X bank %d\n",
1106 L3C_ELR_PADDRHIGH(l3celr) << 6 | (l3caelr >> 26),
1107 (l3caelr & 0x3FFFFFFF) << 6, L3C_BELR_BANK(l3cbelr));
1108 dev_err(edac_dev->dev,
1109 "L3C error status register value 0x%X\n", l3cesr);
1111 /* Clear L3C error interrupt */
1112 writel(0, ctx->dev_csr + L3C_ESR);
1114 if (ctx->version <= 1 &&
1115 xgene_edac_l3_promote_to_uc_err(l3cesr, l3celr)) {
1116 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
1119 if (l3cesr & L3C_ESR_CERR_MASK)
1120 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
1121 if (l3cesr & L3C_ESR_UCERR_MASK)
1122 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
1125 static void xgene_edac_l3_hw_init(struct edac_device_ctl_info *edac_dev,
1128 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1131 val = readl(ctx->dev_csr + L3C_ECR);
1132 val |= L3C_UCERREN | L3C_CERREN;
1133 /* On disable, we just disable interrupt but keep error enabled */
1134 if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
1136 val |= L3C_ECR_UCINTREN | L3C_ECR_CINTREN;
1138 val &= ~(L3C_ECR_UCINTREN | L3C_ECR_CINTREN);
1140 writel(val, ctx->dev_csr + L3C_ECR);
1142 if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
1143 /* Enable/disable L3 error top level interrupt */
1145 xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
1146 L3C_UNCORR_ERR_MASK);
1147 xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
1150 xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
1151 L3C_UNCORR_ERR_MASK);
1152 xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
1158 static ssize_t xgene_edac_l3_inject_ctrl_write(struct file *file,
1159 const char __user *data,
1160 size_t count, loff_t *ppos)
1162 struct edac_device_ctl_info *edac_dev = file->private_data;
1163 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1165 /* Generate all errors */
1166 writel(0xFFFFFFFF, ctx->dev_csr + L3C_ESR);
1170 static const struct file_operations xgene_edac_l3_debug_inject_fops = {
1171 .open = simple_open,
1172 .write = xgene_edac_l3_inject_ctrl_write,
1173 .llseek = generic_file_llseek
1177 xgene_edac_l3_create_debugfs_nodes(struct edac_device_ctl_info *edac_dev)
1179 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1180 struct dentry *dbgfs_dir;
1183 if (!IS_ENABLED(CONFIG_EDAC_DEBUG) || !ctx->edac->dfs)
1186 snprintf(name, sizeof(name), "l3c%d", ctx->edac_idx);
1187 dbgfs_dir = edac_debugfs_create_dir_at(name, ctx->edac->dfs);
1191 debugfs_create_file("l3_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev,
1192 &xgene_edac_l3_debug_inject_fops);
1195 static int xgene_edac_l3_add(struct xgene_edac *edac, struct device_node *np,
1198 struct edac_device_ctl_info *edac_dev;
1199 struct xgene_edac_dev_ctx *ctx;
1200 struct resource res;
1201 void __iomem *dev_csr;
1205 if (!devres_open_group(edac->dev, xgene_edac_l3_add, GFP_KERNEL))
1208 rc = of_address_to_resource(np, 0, &res);
1210 dev_err(edac->dev, "no L3 resource address\n");
1211 goto err_release_group;
1213 dev_csr = devm_ioremap_resource(edac->dev, &res);
1214 if (IS_ERR(dev_csr)) {
1216 "devm_ioremap_resource failed for L3 resource address\n");
1217 rc = PTR_ERR(dev_csr);
1218 goto err_release_group;
1221 edac_idx = edac_device_alloc_index();
1222 edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
1223 "l3c", 1, "l3c", 1, 0, NULL, 0,
1227 goto err_release_group;
1230 ctx = edac_dev->pvt_info;
1231 ctx->dev_csr = dev_csr;
1232 ctx->name = "xgene_l3_err";
1233 ctx->edac_idx = edac_idx;
1235 ctx->edac_dev = edac_dev;
1236 ctx->ddev = *edac->dev;
1237 ctx->version = version;
1238 edac_dev->dev = &ctx->ddev;
1239 edac_dev->ctl_name = ctx->name;
1240 edac_dev->dev_name = ctx->name;
1241 edac_dev->mod_name = EDAC_MOD_STR;
1243 if (edac_op_state == EDAC_OPSTATE_POLL)
1244 edac_dev->edac_check = xgene_edac_l3_check;
1246 xgene_edac_l3_create_debugfs_nodes(edac_dev);
1248 rc = edac_device_add_device(edac_dev);
1250 dev_err(edac->dev, "failed edac_device_add_device()\n");
1255 if (edac_op_state == EDAC_OPSTATE_INT)
1256 edac_dev->op_state = OP_RUNNING_INTERRUPT;
1258 list_add(&ctx->next, &edac->l3s);
1260 xgene_edac_l3_hw_init(edac_dev, 1);
1262 devres_remove_group(edac->dev, xgene_edac_l3_add);
1264 dev_info(edac->dev, "X-Gene EDAC L3 registered\n");
1268 edac_device_free_ctl_info(edac_dev);
1270 devres_release_group(edac->dev, xgene_edac_l3_add);
1274 static int xgene_edac_l3_remove(struct xgene_edac_dev_ctx *l3)
1276 struct edac_device_ctl_info *edac_dev = l3->edac_dev;
1278 xgene_edac_l3_hw_init(edac_dev, 0);
1279 edac_device_del_device(l3->edac->dev);
1280 edac_device_free_ctl_info(edac_dev);
1284 /* SoC error device */
1285 #define IOBAXIS0TRANSERRINTSTS 0x0000
1286 #define IOBAXIS0_M_ILLEGAL_ACCESS_MASK BIT(1)
1287 #define IOBAXIS0_ILLEGAL_ACCESS_MASK BIT(0)
1288 #define IOBAXIS0TRANSERRINTMSK 0x0004
1289 #define IOBAXIS0TRANSERRREQINFOL 0x0008
1290 #define IOBAXIS0TRANSERRREQINFOH 0x000c
1291 #define REQTYPE_RD(src) (((src) & BIT(0)))
1292 #define ERRADDRH_RD(src) (((src) & 0xffc00000) >> 22)
1293 #define IOBAXIS1TRANSERRINTSTS 0x0010
1294 #define IOBAXIS1TRANSERRINTMSK 0x0014
1295 #define IOBAXIS1TRANSERRREQINFOL 0x0018
1296 #define IOBAXIS1TRANSERRREQINFOH 0x001c
1297 #define IOBPATRANSERRINTSTS 0x0020
1298 #define IOBPA_M_REQIDRAM_CORRUPT_MASK BIT(7)
1299 #define IOBPA_REQIDRAM_CORRUPT_MASK BIT(6)
1300 #define IOBPA_M_TRANS_CORRUPT_MASK BIT(5)
1301 #define IOBPA_TRANS_CORRUPT_MASK BIT(4)
1302 #define IOBPA_M_WDATA_CORRUPT_MASK BIT(3)
1303 #define IOBPA_WDATA_CORRUPT_MASK BIT(2)
1304 #define IOBPA_M_RDATA_CORRUPT_MASK BIT(1)
1305 #define IOBPA_RDATA_CORRUPT_MASK BIT(0)
1306 #define IOBBATRANSERRINTSTS 0x0030
1307 #define M_ILLEGAL_ACCESS_MASK BIT(15)
1308 #define ILLEGAL_ACCESS_MASK BIT(14)
1309 #define M_WIDRAM_CORRUPT_MASK BIT(13)
1310 #define WIDRAM_CORRUPT_MASK BIT(12)
1311 #define M_RIDRAM_CORRUPT_MASK BIT(11)
1312 #define RIDRAM_CORRUPT_MASK BIT(10)
1313 #define M_TRANS_CORRUPT_MASK BIT(9)
1314 #define TRANS_CORRUPT_MASK BIT(8)
1315 #define M_WDATA_CORRUPT_MASK BIT(7)
1316 #define WDATA_CORRUPT_MASK BIT(6)
1317 #define M_RBM_POISONED_REQ_MASK BIT(5)
1318 #define RBM_POISONED_REQ_MASK BIT(4)
1319 #define M_XGIC_POISONED_REQ_MASK BIT(3)
1320 #define XGIC_POISONED_REQ_MASK BIT(2)
1321 #define M_WRERR_RESP_MASK BIT(1)
1322 #define WRERR_RESP_MASK BIT(0)
1323 #define IOBBATRANSERRREQINFOL 0x0038
1324 #define IOBBATRANSERRREQINFOH 0x003c
1325 #define REQTYPE_F2_RD(src) ((src) & BIT(0))
1326 #define ERRADDRH_F2_RD(src) (((src) & 0xffc00000) >> 22)
1327 #define IOBBATRANSERRCSWREQID 0x0040
1328 #define XGICTRANSERRINTSTS 0x0050
1329 #define M_WR_ACCESS_ERR_MASK BIT(3)
1330 #define WR_ACCESS_ERR_MASK BIT(2)
1331 #define M_RD_ACCESS_ERR_MASK BIT(1)
1332 #define RD_ACCESS_ERR_MASK BIT(0)
1333 #define XGICTRANSERRINTMSK 0x0054
1334 #define XGICTRANSERRREQINFO 0x0058
1335 #define REQTYPE_MASK BIT(26)
1336 #define ERRADDR_RD(src) ((src) & 0x03ffffff)
1337 #define GLBL_ERR_STS 0x0800
1338 #define MDED_ERR_MASK BIT(3)
1339 #define DED_ERR_MASK BIT(2)
1340 #define MSEC_ERR_MASK BIT(1)
1341 #define SEC_ERR_MASK BIT(0)
1342 #define GLBL_SEC_ERRL 0x0810
1343 #define GLBL_SEC_ERRH 0x0818
1344 #define GLBL_MSEC_ERRL 0x0820
1345 #define GLBL_MSEC_ERRH 0x0828
1346 #define GLBL_DED_ERRL 0x0830
1347 #define GLBL_DED_ERRLMASK 0x0834
1348 #define GLBL_DED_ERRH 0x0838
1349 #define GLBL_DED_ERRHMASK 0x083c
1350 #define GLBL_MDED_ERRL 0x0840
1351 #define GLBL_MDED_ERRLMASK 0x0844
1352 #define GLBL_MDED_ERRH 0x0848
1353 #define GLBL_MDED_ERRHMASK 0x084c
1355 /* IO Bus Registers */
1356 #define RBCSR 0x0000
1357 #define STICKYERR_MASK BIT(0)
1358 #define RBEIR 0x0008
1359 #define AGENT_OFFLINE_ERR_MASK BIT(30)
1360 #define UNIMPL_RBPAGE_ERR_MASK BIT(29)
1361 #define WORD_ALIGNED_ERR_MASK BIT(28)
1362 #define PAGE_ACCESS_ERR_MASK BIT(27)
1363 #define WRITE_ACCESS_MASK BIT(26)
1364 #define RBERRADDR_RD(src) ((src) & 0x03FFFFFF)
1366 static const char * const soc_mem_err_v1[] = {
1401 static void xgene_edac_iob_gic_report(struct edac_device_ctl_info *edac_dev)
1403 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1409 /* GIC transaction error interrupt */
1410 reg = readl(ctx->dev_csr + XGICTRANSERRINTSTS);
1413 dev_err(edac_dev->dev, "XGIC transaction error\n");
1414 if (reg & RD_ACCESS_ERR_MASK)
1415 dev_err(edac_dev->dev, "XGIC read size error\n");
1416 if (reg & M_RD_ACCESS_ERR_MASK)
1417 dev_err(edac_dev->dev, "Multiple XGIC read size error\n");
1418 if (reg & WR_ACCESS_ERR_MASK)
1419 dev_err(edac_dev->dev, "XGIC write size error\n");
1420 if (reg & M_WR_ACCESS_ERR_MASK)
1421 dev_err(edac_dev->dev, "Multiple XGIC write size error\n");
1422 info = readl(ctx->dev_csr + XGICTRANSERRREQINFO);
1423 dev_err(edac_dev->dev, "XGIC %s access @ 0x%08X (0x%08X)\n",
1424 info & REQTYPE_MASK ? "read" : "write", ERRADDR_RD(info),
1426 writel(reg, ctx->dev_csr + XGICTRANSERRINTSTS);
1429 /* IOB memory error */
1430 reg = readl(ctx->dev_csr + GLBL_ERR_STS);
1433 if (reg & SEC_ERR_MASK) {
1434 err_addr_lo = readl(ctx->dev_csr + GLBL_SEC_ERRL);
1435 err_addr_hi = readl(ctx->dev_csr + GLBL_SEC_ERRH);
1436 dev_err(edac_dev->dev,
1437 "IOB single-bit correctable memory at 0x%08X.%08X error\n",
1438 err_addr_lo, err_addr_hi);
1439 writel(err_addr_lo, ctx->dev_csr + GLBL_SEC_ERRL);
1440 writel(err_addr_hi, ctx->dev_csr + GLBL_SEC_ERRH);
1442 if (reg & MSEC_ERR_MASK) {
1443 err_addr_lo = readl(ctx->dev_csr + GLBL_MSEC_ERRL);
1444 err_addr_hi = readl(ctx->dev_csr + GLBL_MSEC_ERRH);
1445 dev_err(edac_dev->dev,
1446 "IOB multiple single-bit correctable memory at 0x%08X.%08X error\n",
1447 err_addr_lo, err_addr_hi);
1448 writel(err_addr_lo, ctx->dev_csr + GLBL_MSEC_ERRL);
1449 writel(err_addr_hi, ctx->dev_csr + GLBL_MSEC_ERRH);
1451 if (reg & (SEC_ERR_MASK | MSEC_ERR_MASK))
1452 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
1454 if (reg & DED_ERR_MASK) {
1455 err_addr_lo = readl(ctx->dev_csr + GLBL_DED_ERRL);
1456 err_addr_hi = readl(ctx->dev_csr + GLBL_DED_ERRH);
1457 dev_err(edac_dev->dev,
1458 "IOB double-bit uncorrectable memory at 0x%08X.%08X error\n",
1459 err_addr_lo, err_addr_hi);
1460 writel(err_addr_lo, ctx->dev_csr + GLBL_DED_ERRL);
1461 writel(err_addr_hi, ctx->dev_csr + GLBL_DED_ERRH);
1463 if (reg & MDED_ERR_MASK) {
1464 err_addr_lo = readl(ctx->dev_csr + GLBL_MDED_ERRL);
1465 err_addr_hi = readl(ctx->dev_csr + GLBL_MDED_ERRH);
1466 dev_err(edac_dev->dev,
1467 "Multiple IOB double-bit uncorrectable memory at 0x%08X.%08X error\n",
1468 err_addr_lo, err_addr_hi);
1469 writel(err_addr_lo, ctx->dev_csr + GLBL_MDED_ERRL);
1470 writel(err_addr_hi, ctx->dev_csr + GLBL_MDED_ERRH);
1472 if (reg & (DED_ERR_MASK | MDED_ERR_MASK))
1473 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
1476 static void xgene_edac_rb_report(struct edac_device_ctl_info *edac_dev)
1478 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1483 /* If the register bus resource isn't available, just skip it */
1484 if (!ctx->edac->rb_map)
1488 * Check RB access errors
1490 * 2. Un-implemented page
1491 * 3. Un-aligned access
1492 * 4. Offline slave IP
1494 if (regmap_read(ctx->edac->rb_map, RBCSR, ®))
1496 if (reg & STICKYERR_MASK) {
1500 dev_err(edac_dev->dev, "IOB bus access error(s)\n");
1501 if (regmap_read(ctx->edac->rb_map, RBEIR, ®))
1503 write = reg & WRITE_ACCESS_MASK ? 1 : 0;
1504 address = RBERRADDR_RD(reg);
1505 if (reg & AGENT_OFFLINE_ERR_MASK)
1506 dev_err(edac_dev->dev,
1507 "IOB bus %s access to offline agent error\n",
1508 write ? "write" : "read");
1509 if (reg & UNIMPL_RBPAGE_ERR_MASK)
1510 dev_err(edac_dev->dev,
1511 "IOB bus %s access to unimplemented page error\n",
1512 write ? "write" : "read");
1513 if (reg & WORD_ALIGNED_ERR_MASK)
1514 dev_err(edac_dev->dev,
1515 "IOB bus %s word aligned access error\n",
1516 write ? "write" : "read");
1517 if (reg & PAGE_ACCESS_ERR_MASK)
1518 dev_err(edac_dev->dev,
1519 "IOB bus %s to page out of range access error\n",
1520 write ? "write" : "read");
1521 if (regmap_write(ctx->edac->rb_map, RBEIR, 0))
1523 if (regmap_write(ctx->edac->rb_map, RBCSR, 0))
1528 /* IOB Bridge agent transaction error interrupt */
1529 reg = readl(ctx->dev_csr + IOBBATRANSERRINTSTS);
1533 dev_err(edac_dev->dev, "IOB bridge agent (BA) transaction error\n");
1534 if (reg & WRERR_RESP_MASK)
1535 dev_err(edac_dev->dev, "IOB BA write response error\n");
1536 if (reg & M_WRERR_RESP_MASK)
1537 dev_err(edac_dev->dev,
1538 "Multiple IOB BA write response error\n");
1539 if (reg & XGIC_POISONED_REQ_MASK)
1540 dev_err(edac_dev->dev, "IOB BA XGIC poisoned write error\n");
1541 if (reg & M_XGIC_POISONED_REQ_MASK)
1542 dev_err(edac_dev->dev,
1543 "Multiple IOB BA XGIC poisoned write error\n");
1544 if (reg & RBM_POISONED_REQ_MASK)
1545 dev_err(edac_dev->dev, "IOB BA RBM poisoned write error\n");
1546 if (reg & M_RBM_POISONED_REQ_MASK)
1547 dev_err(edac_dev->dev,
1548 "Multiple IOB BA RBM poisoned write error\n");
1549 if (reg & WDATA_CORRUPT_MASK)
1550 dev_err(edac_dev->dev, "IOB BA write error\n");
1551 if (reg & M_WDATA_CORRUPT_MASK)
1552 dev_err(edac_dev->dev, "Multiple IOB BA write error\n");
1553 if (reg & TRANS_CORRUPT_MASK)
1554 dev_err(edac_dev->dev, "IOB BA transaction error\n");
1555 if (reg & M_TRANS_CORRUPT_MASK)
1556 dev_err(edac_dev->dev, "Multiple IOB BA transaction error\n");
1557 if (reg & RIDRAM_CORRUPT_MASK)
1558 dev_err(edac_dev->dev,
1559 "IOB BA RDIDRAM read transaction ID error\n");
1560 if (reg & M_RIDRAM_CORRUPT_MASK)
1561 dev_err(edac_dev->dev,
1562 "Multiple IOB BA RDIDRAM read transaction ID error\n");
1563 if (reg & WIDRAM_CORRUPT_MASK)
1564 dev_err(edac_dev->dev,
1565 "IOB BA RDIDRAM write transaction ID error\n");
1566 if (reg & M_WIDRAM_CORRUPT_MASK)
1567 dev_err(edac_dev->dev,
1568 "Multiple IOB BA RDIDRAM write transaction ID error\n");
1569 if (reg & ILLEGAL_ACCESS_MASK)
1570 dev_err(edac_dev->dev,
1571 "IOB BA XGIC/RB illegal access error\n");
1572 if (reg & M_ILLEGAL_ACCESS_MASK)
1573 dev_err(edac_dev->dev,
1574 "Multiple IOB BA XGIC/RB illegal access error\n");
1576 err_addr_lo = readl(ctx->dev_csr + IOBBATRANSERRREQINFOL);
1577 err_addr_hi = readl(ctx->dev_csr + IOBBATRANSERRREQINFOH);
1578 dev_err(edac_dev->dev, "IOB BA %s access at 0x%02X.%08X (0x%08X)\n",
1579 REQTYPE_F2_RD(err_addr_hi) ? "read" : "write",
1580 ERRADDRH_F2_RD(err_addr_hi), err_addr_lo, err_addr_hi);
1581 if (reg & WRERR_RESP_MASK)
1582 dev_err(edac_dev->dev, "IOB BA requestor ID 0x%08X\n",
1583 readl(ctx->dev_csr + IOBBATRANSERRCSWREQID));
1584 writel(reg, ctx->dev_csr + IOBBATRANSERRINTSTS);
1587 static void xgene_edac_pa_report(struct edac_device_ctl_info *edac_dev)
1589 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1594 /* IOB Processing agent transaction error interrupt */
1595 reg = readl(ctx->dev_csr + IOBPATRANSERRINTSTS);
1598 dev_err(edac_dev->dev, "IOB processing agent (PA) transaction error\n");
1599 if (reg & IOBPA_RDATA_CORRUPT_MASK)
1600 dev_err(edac_dev->dev, "IOB PA read data RAM error\n");
1601 if (reg & IOBPA_M_RDATA_CORRUPT_MASK)
1602 dev_err(edac_dev->dev,
1603 "Multiple IOB PA read data RAM error\n");
1604 if (reg & IOBPA_WDATA_CORRUPT_MASK)
1605 dev_err(edac_dev->dev, "IOB PA write data RAM error\n");
1606 if (reg & IOBPA_M_WDATA_CORRUPT_MASK)
1607 dev_err(edac_dev->dev,
1608 "Multiple IOB PA write data RAM error\n");
1609 if (reg & IOBPA_TRANS_CORRUPT_MASK)
1610 dev_err(edac_dev->dev, "IOB PA transaction error\n");
1611 if (reg & IOBPA_M_TRANS_CORRUPT_MASK)
1612 dev_err(edac_dev->dev, "Multiple IOB PA transaction error\n");
1613 if (reg & IOBPA_REQIDRAM_CORRUPT_MASK)
1614 dev_err(edac_dev->dev, "IOB PA transaction ID RAM error\n");
1615 if (reg & IOBPA_M_REQIDRAM_CORRUPT_MASK)
1616 dev_err(edac_dev->dev,
1617 "Multiple IOB PA transaction ID RAM error\n");
1618 writel(reg, ctx->dev_csr + IOBPATRANSERRINTSTS);
1621 /* IOB AXI0 Error */
1622 reg = readl(ctx->dev_csr + IOBAXIS0TRANSERRINTSTS);
1625 err_addr_lo = readl(ctx->dev_csr + IOBAXIS0TRANSERRREQINFOL);
1626 err_addr_hi = readl(ctx->dev_csr + IOBAXIS0TRANSERRREQINFOH);
1627 dev_err(edac_dev->dev,
1628 "%sAXI slave 0 illegal %s access @ 0x%02X.%08X (0x%08X)\n",
1629 reg & IOBAXIS0_M_ILLEGAL_ACCESS_MASK ? "Multiple " : "",
1630 REQTYPE_RD(err_addr_hi) ? "read" : "write",
1631 ERRADDRH_RD(err_addr_hi), err_addr_lo, err_addr_hi);
1632 writel(reg, ctx->dev_csr + IOBAXIS0TRANSERRINTSTS);
1635 /* IOB AXI1 Error */
1636 reg = readl(ctx->dev_csr + IOBAXIS1TRANSERRINTSTS);
1639 err_addr_lo = readl(ctx->dev_csr + IOBAXIS1TRANSERRREQINFOL);
1640 err_addr_hi = readl(ctx->dev_csr + IOBAXIS1TRANSERRREQINFOH);
1641 dev_err(edac_dev->dev,
1642 "%sAXI slave 1 illegal %s access @ 0x%02X.%08X (0x%08X)\n",
1643 reg & IOBAXIS0_M_ILLEGAL_ACCESS_MASK ? "Multiple " : "",
1644 REQTYPE_RD(err_addr_hi) ? "read" : "write",
1645 ERRADDRH_RD(err_addr_hi), err_addr_lo, err_addr_hi);
1646 writel(reg, ctx->dev_csr + IOBAXIS1TRANSERRINTSTS);
1649 static void xgene_edac_soc_check(struct edac_device_ctl_info *edac_dev)
1651 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1652 const char * const *soc_mem_err = NULL;
1658 xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat);
1659 xgene_edac_pcp_rd(ctx->edac, PCPLPERRINTSTS, &pcp_lp_stat);
1660 xgene_edac_pcp_rd(ctx->edac, MEMERRINTSTS, ®);
1661 if (!((pcp_hp_stat & (IOB_PA_ERR_MASK | IOB_BA_ERR_MASK |
1662 IOB_XGIC_ERR_MASK | IOB_RB_ERR_MASK)) ||
1663 (pcp_lp_stat & CSW_SWITCH_TRACE_ERR_MASK) || reg))
1666 if (pcp_hp_stat & IOB_XGIC_ERR_MASK)
1667 xgene_edac_iob_gic_report(edac_dev);
1669 if (pcp_hp_stat & (IOB_RB_ERR_MASK | IOB_BA_ERR_MASK))
1670 xgene_edac_rb_report(edac_dev);
1672 if (pcp_hp_stat & IOB_PA_ERR_MASK)
1673 xgene_edac_pa_report(edac_dev);
1675 if (pcp_lp_stat & CSW_SWITCH_TRACE_ERR_MASK) {
1676 dev_info(edac_dev->dev,
1677 "CSW switch trace correctable memory parity error\n");
1678 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
1683 if (ctx->version == 1)
1684 soc_mem_err = soc_mem_err_v1;
1686 dev_err(edac_dev->dev, "SoC memory parity error 0x%08X\n",
1688 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
1691 for (i = 0; i < 31; i++) {
1692 if (reg & (1 << i)) {
1693 dev_err(edac_dev->dev, "%s memory parity error\n",
1695 edac_device_handle_ue(edac_dev, 0, 0,
1696 edac_dev->ctl_name);
1701 static void xgene_edac_soc_hw_init(struct edac_device_ctl_info *edac_dev,
1704 struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
1706 /* Enable SoC IP error interrupt */
1707 if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
1709 xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
1714 xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
1715 CSW_SWITCH_TRACE_ERR_MASK);
1717 xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
1722 xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
1723 CSW_SWITCH_TRACE_ERR_MASK);
1726 writel(enable ? 0x0 : 0xFFFFFFFF,
1727 ctx->dev_csr + IOBAXIS0TRANSERRINTMSK);
1728 writel(enable ? 0x0 : 0xFFFFFFFF,
1729 ctx->dev_csr + IOBAXIS1TRANSERRINTMSK);
1730 writel(enable ? 0x0 : 0xFFFFFFFF,
1731 ctx->dev_csr + XGICTRANSERRINTMSK);
1733 xgene_edac_pcp_setbits(ctx->edac, MEMERRINTMSK,
1734 enable ? 0x0 : 0xFFFFFFFF);
1738 static int xgene_edac_soc_add(struct xgene_edac *edac, struct device_node *np,
1741 struct edac_device_ctl_info *edac_dev;
1742 struct xgene_edac_dev_ctx *ctx;
1743 void __iomem *dev_csr;
1744 struct resource res;
1748 if (!devres_open_group(edac->dev, xgene_edac_soc_add, GFP_KERNEL))
1751 rc = of_address_to_resource(np, 0, &res);
1753 dev_err(edac->dev, "no SoC resource address\n");
1754 goto err_release_group;
1756 dev_csr = devm_ioremap_resource(edac->dev, &res);
1757 if (IS_ERR(dev_csr)) {
1759 "devm_ioremap_resource failed for soc resource address\n");
1760 rc = PTR_ERR(dev_csr);
1761 goto err_release_group;
1764 edac_idx = edac_device_alloc_index();
1765 edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
1766 "SOC", 1, "SOC", 1, 2, NULL, 0,
1770 goto err_release_group;
1773 ctx = edac_dev->pvt_info;
1774 ctx->dev_csr = dev_csr;
1775 ctx->name = "xgene_soc_err";
1776 ctx->edac_idx = edac_idx;
1778 ctx->edac_dev = edac_dev;
1779 ctx->ddev = *edac->dev;
1780 ctx->version = version;
1781 edac_dev->dev = &ctx->ddev;
1782 edac_dev->ctl_name = ctx->name;
1783 edac_dev->dev_name = ctx->name;
1784 edac_dev->mod_name = EDAC_MOD_STR;
1786 if (edac_op_state == EDAC_OPSTATE_POLL)
1787 edac_dev->edac_check = xgene_edac_soc_check;
1789 rc = edac_device_add_device(edac_dev);
1791 dev_err(edac->dev, "failed edac_device_add_device()\n");
1796 if (edac_op_state == EDAC_OPSTATE_INT)
1797 edac_dev->op_state = OP_RUNNING_INTERRUPT;
1799 list_add(&ctx->next, &edac->socs);
1801 xgene_edac_soc_hw_init(edac_dev, 1);
1803 devres_remove_group(edac->dev, xgene_edac_soc_add);
1805 dev_info(edac->dev, "X-Gene EDAC SoC registered\n");
1810 edac_device_free_ctl_info(edac_dev);
1812 devres_release_group(edac->dev, xgene_edac_soc_add);
1816 static int xgene_edac_soc_remove(struct xgene_edac_dev_ctx *soc)
1818 struct edac_device_ctl_info *edac_dev = soc->edac_dev;
1820 xgene_edac_soc_hw_init(edac_dev, 0);
1821 edac_device_del_device(soc->edac->dev);
1822 edac_device_free_ctl_info(edac_dev);
1826 static irqreturn_t xgene_edac_isr(int irq, void *dev_id)
1828 struct xgene_edac *ctx = dev_id;
1829 struct xgene_edac_pmd_ctx *pmd;
1830 struct xgene_edac_dev_ctx *node;
1831 unsigned int pcp_hp_stat;
1832 unsigned int pcp_lp_stat;
1834 xgene_edac_pcp_rd(ctx, PCPHPERRINTSTS, &pcp_hp_stat);
1835 xgene_edac_pcp_rd(ctx, PCPLPERRINTSTS, &pcp_lp_stat);
1836 if ((MCU_UNCORR_ERR_MASK & pcp_hp_stat) ||
1837 (MCU_CTL_ERR_MASK & pcp_hp_stat) ||
1838 (MCU_CORR_ERR_MASK & pcp_lp_stat)) {
1839 struct xgene_edac_mc_ctx *mcu;
1841 list_for_each_entry(mcu, &ctx->mcus, next)
1842 xgene_edac_mc_check(mcu->mci);
1845 list_for_each_entry(pmd, &ctx->pmds, next) {
1846 if ((PMD0_MERR_MASK << pmd->pmd) & pcp_hp_stat)
1847 xgene_edac_pmd_check(pmd->edac_dev);
1850 list_for_each_entry(node, &ctx->l3s, next)
1851 xgene_edac_l3_check(node->edac_dev);
1853 list_for_each_entry(node, &ctx->socs, next)
1854 xgene_edac_soc_check(node->edac_dev);
1859 static int xgene_edac_probe(struct platform_device *pdev)
1861 struct xgene_edac *edac;
1862 struct device_node *child;
1863 struct resource *res;
1866 edac = devm_kzalloc(&pdev->dev, sizeof(*edac), GFP_KERNEL);
1870 edac->dev = &pdev->dev;
1871 platform_set_drvdata(pdev, edac);
1872 INIT_LIST_HEAD(&edac->mcus);
1873 INIT_LIST_HEAD(&edac->pmds);
1874 INIT_LIST_HEAD(&edac->l3s);
1875 INIT_LIST_HEAD(&edac->socs);
1876 spin_lock_init(&edac->lock);
1877 mutex_init(&edac->mc_lock);
1879 edac->csw_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1881 if (IS_ERR(edac->csw_map)) {
1882 dev_err(edac->dev, "unable to get syscon regmap csw\n");
1883 rc = PTR_ERR(edac->csw_map);
1887 edac->mcba_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1889 if (IS_ERR(edac->mcba_map)) {
1890 dev_err(edac->dev, "unable to get syscon regmap mcba\n");
1891 rc = PTR_ERR(edac->mcba_map);
1895 edac->mcbb_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1897 if (IS_ERR(edac->mcbb_map)) {
1898 dev_err(edac->dev, "unable to get syscon regmap mcbb\n");
1899 rc = PTR_ERR(edac->mcbb_map);
1902 edac->efuse_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1904 if (IS_ERR(edac->efuse_map)) {
1905 dev_err(edac->dev, "unable to get syscon regmap efuse\n");
1906 rc = PTR_ERR(edac->efuse_map);
1911 * NOTE: The register bus resource is optional for compatibility
1914 edac->rb_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1916 if (IS_ERR(edac->rb_map)) {
1917 dev_warn(edac->dev, "missing syscon regmap rb\n");
1918 edac->rb_map = NULL;
1921 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1922 edac->pcp_csr = devm_ioremap_resource(&pdev->dev, res);
1923 if (IS_ERR(edac->pcp_csr)) {
1924 dev_err(&pdev->dev, "no PCP resource address\n");
1925 rc = PTR_ERR(edac->pcp_csr);
1929 if (edac_op_state == EDAC_OPSTATE_INT) {
1933 for (i = 0; i < 3; i++) {
1934 irq = platform_get_irq(pdev, i);
1936 dev_err(&pdev->dev, "No IRQ resource\n");
1940 rc = devm_request_irq(&pdev->dev, irq,
1941 xgene_edac_isr, IRQF_SHARED,
1942 dev_name(&pdev->dev), edac);
1945 "Could not request IRQ %d\n", irq);
1951 edac->dfs = edac_debugfs_create_dir(pdev->dev.kobj.name);
1953 for_each_child_of_node(pdev->dev.of_node, child) {
1954 if (!of_device_is_available(child))
1956 if (of_device_is_compatible(child, "apm,xgene-edac-mc"))
1957 xgene_edac_mc_add(edac, child);
1958 if (of_device_is_compatible(child, "apm,xgene-edac-pmd"))
1959 xgene_edac_pmd_add(edac, child, 1);
1960 if (of_device_is_compatible(child, "apm,xgene-edac-pmd-v2"))
1961 xgene_edac_pmd_add(edac, child, 2);
1962 if (of_device_is_compatible(child, "apm,xgene-edac-l3"))
1963 xgene_edac_l3_add(edac, child, 1);
1964 if (of_device_is_compatible(child, "apm,xgene-edac-l3-v2"))
1965 xgene_edac_l3_add(edac, child, 2);
1966 if (of_device_is_compatible(child, "apm,xgene-edac-soc"))
1967 xgene_edac_soc_add(edac, child, 0);
1968 if (of_device_is_compatible(child, "apm,xgene-edac-soc-v1"))
1969 xgene_edac_soc_add(edac, child, 1);
1978 static int xgene_edac_remove(struct platform_device *pdev)
1980 struct xgene_edac *edac = dev_get_drvdata(&pdev->dev);
1981 struct xgene_edac_mc_ctx *mcu;
1982 struct xgene_edac_mc_ctx *temp_mcu;
1983 struct xgene_edac_pmd_ctx *pmd;
1984 struct xgene_edac_pmd_ctx *temp_pmd;
1985 struct xgene_edac_dev_ctx *node;
1986 struct xgene_edac_dev_ctx *temp_node;
1988 list_for_each_entry_safe(mcu, temp_mcu, &edac->mcus, next)
1989 xgene_edac_mc_remove(mcu);
1991 list_for_each_entry_safe(pmd, temp_pmd, &edac->pmds, next)
1992 xgene_edac_pmd_remove(pmd);
1994 list_for_each_entry_safe(node, temp_node, &edac->l3s, next)
1995 xgene_edac_l3_remove(node);
1997 list_for_each_entry_safe(node, temp_node, &edac->socs, next)
1998 xgene_edac_soc_remove(node);
2003 static const struct of_device_id xgene_edac_of_match[] = {
2004 { .compatible = "apm,xgene-edac" },
2007 MODULE_DEVICE_TABLE(of, xgene_edac_of_match);
2009 static struct platform_driver xgene_edac_driver = {
2010 .probe = xgene_edac_probe,
2011 .remove = xgene_edac_remove,
2013 .name = "xgene-edac",
2014 .of_match_table = xgene_edac_of_match,
2018 static int __init xgene_edac_init(void)
2022 /* Make sure error reporting method is sane */
2023 switch (edac_op_state) {
2024 case EDAC_OPSTATE_POLL:
2025 case EDAC_OPSTATE_INT:
2028 edac_op_state = EDAC_OPSTATE_INT;
2032 rc = platform_driver_register(&xgene_edac_driver);
2034 edac_printk(KERN_ERR, EDAC_MOD_STR,
2035 "EDAC fails to register\n");
2044 module_init(xgene_edac_init);
2046 static void __exit xgene_edac_exit(void)
2048 platform_driver_unregister(&xgene_edac_driver);
2050 module_exit(xgene_edac_exit);
2052 MODULE_LICENSE("GPL");
2054 MODULE_DESCRIPTION("APM X-Gene EDAC driver");
2055 module_param(edac_op_state, int, 0444);
2056 MODULE_PARM_DESC(edac_op_state,
2057 "EDAC error reporting state: 0=Poll, 2=Interrupt");