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linux/drivers/edac/xgene_edac.c
Uwe Kleine-König 9441e5ca3a EDAC/xgene: Convert to platform remove callback returning void 
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.

To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20231004131254.2673842-21-u.kleine-koenig@pengutronix.de
2023-11-20 23:31:44 +01:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* APM X-Gene SoC EDAC (error detection and correction)
*
* Copyright (c) 2015, Applied Micro Circuits Corporation
* Author: Feng Kan <fkan@apm.com>
* Loc Ho <lho@apm.com>
*/
#include <linux/ctype.h>
#include <linux/edac.h>
#include <linux/interrupt.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/regmap.h>
#include "edac_module.h"
#define EDAC_MOD_STR "xgene_edac"
/* Global error configuration status registers (CSR) */
#define PCPHPERRINTSTS 0x0000
#define PCPHPERRINTMSK 0x0004
#define MCU_CTL_ERR_MASK BIT(12)
#define IOB_PA_ERR_MASK BIT(11)
#define IOB_BA_ERR_MASK BIT(10)
#define IOB_XGIC_ERR_MASK BIT(9)
#define IOB_RB_ERR_MASK BIT(8)
#define L3C_UNCORR_ERR_MASK BIT(5)
#define MCU_UNCORR_ERR_MASK BIT(4)
#define PMD3_MERR_MASK BIT(3)
#define PMD2_MERR_MASK BIT(2)
#define PMD1_MERR_MASK BIT(1)
#define PMD0_MERR_MASK BIT(0)
#define PCPLPERRINTSTS 0x0008
#define PCPLPERRINTMSK 0x000C
#define CSW_SWITCH_TRACE_ERR_MASK BIT(2)
#define L3C_CORR_ERR_MASK BIT(1)
#define MCU_CORR_ERR_MASK BIT(0)
#define MEMERRINTSTS 0x0010
#define MEMERRINTMSK 0x0014
struct xgene_edac {
struct device *dev;
struct regmap *csw_map;
struct regmap *mcba_map;
struct regmap *mcbb_map;
struct regmap *efuse_map;
struct regmap *rb_map;
void __iomem *pcp_csr;
spinlock_t lock;
struct dentry *dfs;
struct list_head mcus;
struct list_head pmds;
struct list_head l3s;
struct list_head socs;
struct mutex mc_lock;
int mc_active_mask;
int mc_registered_mask;
};
static void xgene_edac_pcp_rd(struct xgene_edac *edac, u32 reg, u32 *val)
{
*val = readl(edac->pcp_csr + reg);
}
static void xgene_edac_pcp_clrbits(struct xgene_edac *edac, u32 reg,
u32 bits_mask)
{
u32 val;
spin_lock(&edac->lock);
val = readl(edac->pcp_csr + reg);
val &= ~bits_mask;
writel(val, edac->pcp_csr + reg);
spin_unlock(&edac->lock);
}
static void xgene_edac_pcp_setbits(struct xgene_edac *edac, u32 reg,
u32 bits_mask)
{
u32 val;
spin_lock(&edac->lock);
val = readl(edac->pcp_csr + reg);
val |= bits_mask;
writel(val, edac->pcp_csr + reg);
spin_unlock(&edac->lock);
}
/* Memory controller error CSR */
#define MCU_MAX_RANK 8
#define MCU_RANK_STRIDE 0x40
#define MCUGECR 0x0110
#define MCU_GECR_DEMANDUCINTREN_MASK BIT(0)
#define MCU_GECR_BACKUCINTREN_MASK BIT(1)
#define MCU_GECR_CINTREN_MASK BIT(2)
#define MUC_GECR_MCUADDRERREN_MASK BIT(9)
#define MCUGESR 0x0114
#define MCU_GESR_ADDRNOMATCH_ERR_MASK BIT(7)
#define MCU_GESR_ADDRMULTIMATCH_ERR_MASK BIT(6)
#define MCU_GESR_PHYP_ERR_MASK BIT(3)
#define MCUESRR0 0x0314
#define MCU_ESRR_MULTUCERR_MASK BIT(3)
#define MCU_ESRR_BACKUCERR_MASK BIT(2)
#define MCU_ESRR_DEMANDUCERR_MASK BIT(1)
#define MCU_ESRR_CERR_MASK BIT(0)
#define MCUESRRA0 0x0318
#define MCUEBLRR0 0x031c
#define MCU_EBLRR_ERRBANK_RD(src) (((src) & 0x00000007) >> 0)
#define MCUERCRR0 0x0320
#define MCU_ERCRR_ERRROW_RD(src) (((src) & 0xFFFF0000) >> 16)
#define MCU_ERCRR_ERRCOL_RD(src) ((src) & 0x00000FFF)
#define MCUSBECNT0 0x0324
#define MCU_SBECNT_COUNT(src) ((src) & 0xFFFF)
#define CSW_CSWCR 0x0000
#define CSW_CSWCR_DUALMCB_MASK BIT(0)
#define MCBADDRMR 0x0000
#define MCBADDRMR_MCU_INTLV_MODE_MASK BIT(3)
#define MCBADDRMR_DUALMCU_MODE_MASK BIT(2)
#define MCBADDRMR_MCB_INTLV_MODE_MASK BIT(1)
#define MCBADDRMR_ADDRESS_MODE_MASK BIT(0)
struct xgene_edac_mc_ctx {
struct list_head next;
char *name;
struct mem_ctl_info *mci;
struct xgene_edac *edac;
void __iomem *mcu_csr;
u32 mcu_id;
};
static ssize_t xgene_edac_mc_err_inject_write(struct file *file,
const char __user *data,
size_t count, loff_t *ppos)
{
struct mem_ctl_info *mci = file->private_data;
struct xgene_edac_mc_ctx *ctx = mci->pvt_info;
int i;
for (i = 0; i < MCU_MAX_RANK; i++) {
writel(MCU_ESRR_MULTUCERR_MASK | MCU_ESRR_BACKUCERR_MASK |
MCU_ESRR_DEMANDUCERR_MASK | MCU_ESRR_CERR_MASK,
ctx->mcu_csr + MCUESRRA0 + i * MCU_RANK_STRIDE);
}
return count;
}
static const struct file_operations xgene_edac_mc_debug_inject_fops = {
.open = simple_open,
.write = xgene_edac_mc_err_inject_write,
.llseek = generic_file_llseek,
};
static void xgene_edac_mc_create_debugfs_node(struct mem_ctl_info *mci)
{
if (!IS_ENABLED(CONFIG_EDAC_DEBUG))
return;
if (!mci->debugfs)
return;
edac_debugfs_create_file("inject_ctrl", S_IWUSR, mci->debugfs, mci,
&xgene_edac_mc_debug_inject_fops);
}
static void xgene_edac_mc_check(struct mem_ctl_info *mci)
{
struct xgene_edac_mc_ctx *ctx = mci->pvt_info;
unsigned int pcp_hp_stat;
unsigned int pcp_lp_stat;
u32 reg;
u32 rank;
u32 bank;
u32 count;
u32 col_row;
xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat);
xgene_edac_pcp_rd(ctx->edac, PCPLPERRINTSTS, &pcp_lp_stat);
if (!((MCU_UNCORR_ERR_MASK & pcp_hp_stat) ||
(MCU_CTL_ERR_MASK & pcp_hp_stat) ||
(MCU_CORR_ERR_MASK & pcp_lp_stat)))
return;
for (rank = 0; rank < MCU_MAX_RANK; rank++) {
reg = readl(ctx->mcu_csr + MCUESRR0 + rank * MCU_RANK_STRIDE);
/* Detect uncorrectable memory error */
if (reg & (MCU_ESRR_DEMANDUCERR_MASK |
MCU_ESRR_BACKUCERR_MASK)) {
/* Detected uncorrectable memory error */
edac_mc_chipset_printk(mci, KERN_ERR, "X-Gene",
"MCU uncorrectable error at rank %d\n", rank);
edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci,
1, 0, 0, 0, 0, 0, -1, mci->ctl_name, "");
}
/* Detect correctable memory error */
if (reg & MCU_ESRR_CERR_MASK) {
bank = readl(ctx->mcu_csr + MCUEBLRR0 +
rank * MCU_RANK_STRIDE);
col_row = readl(ctx->mcu_csr + MCUERCRR0 +
rank * MCU_RANK_STRIDE);
count = readl(ctx->mcu_csr + MCUSBECNT0 +
rank * MCU_RANK_STRIDE);
edac_mc_chipset_printk(mci, KERN_WARNING, "X-Gene",
"MCU correctable error at rank %d bank %d column %d row %d count %d\n",
rank, MCU_EBLRR_ERRBANK_RD(bank),
MCU_ERCRR_ERRCOL_RD(col_row),
MCU_ERCRR_ERRROW_RD(col_row),
MCU_SBECNT_COUNT(count));
edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci,
1, 0, 0, 0, 0, 0, -1, mci->ctl_name, "");
}
/* Clear all error registers */
writel(0x0, ctx->mcu_csr + MCUEBLRR0 + rank * MCU_RANK_STRIDE);
writel(0x0, ctx->mcu_csr + MCUERCRR0 + rank * MCU_RANK_STRIDE);
writel(0x0, ctx->mcu_csr + MCUSBECNT0 +
rank * MCU_RANK_STRIDE);
writel(reg, ctx->mcu_csr + MCUESRR0 + rank * MCU_RANK_STRIDE);
}
/* Detect memory controller error */
reg = readl(ctx->mcu_csr + MCUGESR);
if (reg) {
if (reg & MCU_GESR_ADDRNOMATCH_ERR_MASK)
edac_mc_chipset_printk(mci, KERN_WARNING, "X-Gene",
"MCU address miss-match error\n");
if (reg & MCU_GESR_ADDRMULTIMATCH_ERR_MASK)
edac_mc_chipset_printk(mci, KERN_WARNING, "X-Gene",
"MCU address multi-match error\n");
writel(reg, ctx->mcu_csr + MCUGESR);
}
}
static void xgene_edac_mc_irq_ctl(struct mem_ctl_info *mci, bool enable)
{
struct xgene_edac_mc_ctx *ctx = mci->pvt_info;
unsigned int val;
if (edac_op_state != EDAC_OPSTATE_INT)
return;
mutex_lock(&ctx->edac->mc_lock);
/*
* As there is only single bit for enable error and interrupt mask,
* we must only enable top level interrupt after all MCUs are
* registered. Otherwise, if there is an error and the corresponding
* MCU has not registered, the interrupt will never get cleared. To
* determine all MCU have registered, we will keep track of active
* MCUs and registered MCUs.
*/
if (enable) {
/* Set registered MCU bit */
ctx->edac->mc_registered_mask |= 1 << ctx->mcu_id;
/* Enable interrupt after all active MCU registered */
if (ctx->edac->mc_registered_mask ==
ctx->edac->mc_active_mask) {
/* Enable memory controller top level interrupt */
xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
MCU_UNCORR_ERR_MASK |
MCU_CTL_ERR_MASK);
xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
MCU_CORR_ERR_MASK);
}
/* Enable MCU interrupt and error reporting */
val = readl(ctx->mcu_csr + MCUGECR);
val |= MCU_GECR_DEMANDUCINTREN_MASK |
MCU_GECR_BACKUCINTREN_MASK |
MCU_GECR_CINTREN_MASK |
MUC_GECR_MCUADDRERREN_MASK;
writel(val, ctx->mcu_csr + MCUGECR);
} else {
/* Disable MCU interrupt */
val = readl(ctx->mcu_csr + MCUGECR);
val &= ~(MCU_GECR_DEMANDUCINTREN_MASK |
MCU_GECR_BACKUCINTREN_MASK |
MCU_GECR_CINTREN_MASK |
MUC_GECR_MCUADDRERREN_MASK);
writel(val, ctx->mcu_csr + MCUGECR);
/* Disable memory controller top level interrupt */
xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
MCU_UNCORR_ERR_MASK | MCU_CTL_ERR_MASK);
xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
MCU_CORR_ERR_MASK);
/* Clear registered MCU bit */
ctx->edac->mc_registered_mask &= ~(1 << ctx->mcu_id);
}
mutex_unlock(&ctx->edac->mc_lock);
}
static int xgene_edac_mc_is_active(struct xgene_edac_mc_ctx *ctx, int mc_idx)
{
unsigned int reg;
u32 mcu_mask;
if (regmap_read(ctx->edac->csw_map, CSW_CSWCR, &reg))
return 0;
if (reg & CSW_CSWCR_DUALMCB_MASK) {
/*
* Dual MCB active - Determine if all 4 active or just MCU0
* and MCU2 active
*/
if (regmap_read(ctx->edac->mcbb_map, MCBADDRMR, &reg))
return 0;
mcu_mask = (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0xF : 0x5;
} else {
/*
* Single MCB active - Determine if MCU0/MCU1 or just MCU0
* active
*/
if (regmap_read(ctx->edac->mcba_map, MCBADDRMR, &reg))
return 0;
mcu_mask = (reg & MCBADDRMR_DUALMCU_MODE_MASK) ? 0x3 : 0x1;
}
/* Save active MC mask if hasn't set already */
if (!ctx->edac->mc_active_mask)
ctx->edac->mc_active_mask = mcu_mask;
return (mcu_mask & (1 << mc_idx)) ? 1 : 0;
}
static int xgene_edac_mc_add(struct xgene_edac *edac, struct device_node *np)
{
struct mem_ctl_info *mci;
struct edac_mc_layer layers[2];
struct xgene_edac_mc_ctx tmp_ctx;
struct xgene_edac_mc_ctx *ctx;
struct resource res;
int rc;
memset(&tmp_ctx, 0, sizeof(tmp_ctx));
tmp_ctx.edac = edac;
if (!devres_open_group(edac->dev, xgene_edac_mc_add, GFP_KERNEL))
return -ENOMEM;
rc = of_address_to_resource(np, 0, &res);
if (rc < 0) {
dev_err(edac->dev, "no MCU resource address\n");
goto err_group;
}
tmp_ctx.mcu_csr = devm_ioremap_resource(edac->dev, &res);
if (IS_ERR(tmp_ctx.mcu_csr)) {
dev_err(edac->dev, "unable to map MCU resource\n");
rc = PTR_ERR(tmp_ctx.mcu_csr);
goto err_group;
}
/* Ignore non-active MCU */
if (of_property_read_u32(np, "memory-controller", &tmp_ctx.mcu_id)) {
dev_err(edac->dev, "no memory-controller property\n");
rc = -ENODEV;
goto err_group;
}
if (!xgene_edac_mc_is_active(&tmp_ctx, tmp_ctx.mcu_id)) {
rc = -ENODEV;
goto err_group;
}
layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
layers[0].size = 4;
layers[0].is_virt_csrow = true;
layers[1].type = EDAC_MC_LAYER_CHANNEL;
layers[1].size = 2;
layers[1].is_virt_csrow = false;
mci = edac_mc_alloc(tmp_ctx.mcu_id, ARRAY_SIZE(layers), layers,
sizeof(*ctx));
if (!mci) {
rc = -ENOMEM;
goto err_group;
}
ctx = mci->pvt_info;
*ctx = tmp_ctx; /* Copy over resource value */
ctx->name = "xgene_edac_mc_err";
ctx->mci = mci;
mci->pdev = &mci->dev;
mci->ctl_name = ctx->name;
mci->dev_name = ctx->name;
mci->mtype_cap = MEM_FLAG_RDDR | MEM_FLAG_RDDR2 | MEM_FLAG_RDDR3 |
MEM_FLAG_DDR | MEM_FLAG_DDR2 | MEM_FLAG_DDR3;
mci->edac_ctl_cap = EDAC_FLAG_SECDED;
mci->edac_cap = EDAC_FLAG_SECDED;
mci->mod_name = EDAC_MOD_STR;
mci->ctl_page_to_phys = NULL;
mci->scrub_cap = SCRUB_FLAG_HW_SRC;
mci->scrub_mode = SCRUB_HW_SRC;
if (edac_op_state == EDAC_OPSTATE_POLL)
mci->edac_check = xgene_edac_mc_check;
if (edac_mc_add_mc(mci)) {
dev_err(edac->dev, "edac_mc_add_mc failed\n");
rc = -EINVAL;
goto err_free;
}
xgene_edac_mc_create_debugfs_node(mci);
list_add(&ctx->next, &edac->mcus);
xgene_edac_mc_irq_ctl(mci, true);
devres_remove_group(edac->dev, xgene_edac_mc_add);
dev_info(edac->dev, "X-Gene EDAC MC registered\n");
return 0;
err_free:
edac_mc_free(mci);
err_group:
devres_release_group(edac->dev, xgene_edac_mc_add);
return rc;
}
static int xgene_edac_mc_remove(struct xgene_edac_mc_ctx *mcu)
{
xgene_edac_mc_irq_ctl(mcu->mci, false);
edac_mc_del_mc(&mcu->mci->dev);
edac_mc_free(mcu->mci);
return 0;
}
/* CPU L1/L2 error CSR */
#define MAX_CPU_PER_PMD 2
#define CPU_CSR_STRIDE 0x00100000
#define CPU_L2C_PAGE 0x000D0000
#define CPU_MEMERR_L2C_PAGE 0x000E0000
#define CPU_MEMERR_CPU_PAGE 0x000F0000
#define MEMERR_CPU_ICFECR_PAGE_OFFSET 0x0000
#define MEMERR_CPU_ICFESR_PAGE_OFFSET 0x0004
#define MEMERR_CPU_ICFESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24)
#define MEMERR_CPU_ICFESR_ERRINDEX_RD(src) (((src) & 0x003F0000) >> 16)
#define MEMERR_CPU_ICFESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8)
#define MEMERR_CPU_ICFESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4)
#define MEMERR_CPU_ICFESR_MULTCERR_MASK BIT(2)
#define MEMERR_CPU_ICFESR_CERR_MASK BIT(0)
#define MEMERR_CPU_LSUESR_PAGE_OFFSET 0x000c
#define MEMERR_CPU_LSUESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24)
#define MEMERR_CPU_LSUESR_ERRINDEX_RD(src) (((src) & 0x003F0000) >> 16)
#define MEMERR_CPU_LSUESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8)
#define MEMERR_CPU_LSUESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4)
#define MEMERR_CPU_LSUESR_MULTCERR_MASK BIT(2)
#define MEMERR_CPU_LSUESR_CERR_MASK BIT(0)
#define MEMERR_CPU_LSUECR_PAGE_OFFSET 0x0008
#define MEMERR_CPU_MMUECR_PAGE_OFFSET 0x0010
#define MEMERR_CPU_MMUESR_PAGE_OFFSET 0x0014
#define MEMERR_CPU_MMUESR_ERRWAY_RD(src) (((src) & 0xFF000000) >> 24)
#define MEMERR_CPU_MMUESR_ERRINDEX_RD(src) (((src) & 0x007F0000) >> 16)
#define MEMERR_CPU_MMUESR_ERRINFO_RD(src) (((src) & 0x0000FF00) >> 8)
#define MEMERR_CPU_MMUESR_ERRREQSTR_LSU_MASK BIT(7)
#define MEMERR_CPU_MMUESR_ERRTYPE_RD(src) (((src) & 0x00000070) >> 4)
#define MEMERR_CPU_MMUESR_MULTCERR_MASK BIT(2)
#define MEMERR_CPU_MMUESR_CERR_MASK BIT(0)
#define MEMERR_CPU_ICFESRA_PAGE_OFFSET 0x0804
#define MEMERR_CPU_LSUESRA_PAGE_OFFSET 0x080c
#define MEMERR_CPU_MMUESRA_PAGE_OFFSET 0x0814
#define MEMERR_L2C_L2ECR_PAGE_OFFSET 0x0000
#define MEMERR_L2C_L2ESR_PAGE_OFFSET 0x0004
#define MEMERR_L2C_L2ESR_ERRSYN_RD(src) (((src) & 0xFF000000) >> 24)
#define MEMERR_L2C_L2ESR_ERRWAY_RD(src) (((src) & 0x00FC0000) >> 18)
#define MEMERR_L2C_L2ESR_ERRCPU_RD(src) (((src) & 0x00020000) >> 17)
#define MEMERR_L2C_L2ESR_ERRGROUP_RD(src) (((src) & 0x0000E000) >> 13)
#define MEMERR_L2C_L2ESR_ERRACTION_RD(src) (((src) & 0x00001C00) >> 10)
#define MEMERR_L2C_L2ESR_ERRTYPE_RD(src) (((src) & 0x00000300) >> 8)
#define MEMERR_L2C_L2ESR_MULTUCERR_MASK BIT(3)
#define MEMERR_L2C_L2ESR_MULTICERR_MASK BIT(2)
#define MEMERR_L2C_L2ESR_UCERR_MASK BIT(1)
#define MEMERR_L2C_L2ESR_ERR_MASK BIT(0)
#define MEMERR_L2C_L2EALR_PAGE_OFFSET 0x0008
#define CPUX_L2C_L2RTOCR_PAGE_OFFSET 0x0010
#define MEMERR_L2C_L2EAHR_PAGE_OFFSET 0x000c
#define CPUX_L2C_L2RTOSR_PAGE_OFFSET 0x0014
#define MEMERR_L2C_L2RTOSR_MULTERR_MASK BIT(1)
#define MEMERR_L2C_L2RTOSR_ERR_MASK BIT(0)
#define CPUX_L2C_L2RTOALR_PAGE_OFFSET 0x0018
#define CPUX_L2C_L2RTOAHR_PAGE_OFFSET 0x001c
#define MEMERR_L2C_L2ESRA_PAGE_OFFSET 0x0804
/*
* Processor Module Domain (PMD) context - Context for a pair of processors.
* Each PMD consists of 2 CPUs and a shared L2 cache. Each CPU consists of
* its own L1 cache.
*/
struct xgene_edac_pmd_ctx {
struct list_head next;
struct device ddev;
char *name;
struct xgene_edac *edac;
struct edac_device_ctl_info *edac_dev;
void __iomem *pmd_csr;
u32 pmd;
int version;
};
static void xgene_edac_pmd_l1_check(struct edac_device_ctl_info *edac_dev,
int cpu_idx)
{
struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
void __iomem *pg_f;
u32 val;
pg_f = ctx->pmd_csr + cpu_idx * CPU_CSR_STRIDE + CPU_MEMERR_CPU_PAGE;
val = readl(pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET);
if (!val)
goto chk_lsu;
dev_err(edac_dev->dev,
"CPU%d L1 memory error ICF 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n",
ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val,
MEMERR_CPU_ICFESR_ERRWAY_RD(val),
MEMERR_CPU_ICFESR_ERRINDEX_RD(val),
MEMERR_CPU_ICFESR_ERRINFO_RD(val));
if (val & MEMERR_CPU_ICFESR_CERR_MASK)
dev_err(edac_dev->dev, "One or more correctable error\n");
if (val & MEMERR_CPU_ICFESR_MULTCERR_MASK)
dev_err(edac_dev->dev, "Multiple correctable error\n");
switch (MEMERR_CPU_ICFESR_ERRTYPE_RD(val)) {
case 1:
dev_err(edac_dev->dev, "L1 TLB multiple hit\n");
break;
case 2:
dev_err(edac_dev->dev, "Way select multiple hit\n");
break;
case 3:
dev_err(edac_dev->dev, "Physical tag parity error\n");
break;
case 4:
case 5:
dev_err(edac_dev->dev, "L1 data parity error\n");
break;
case 6:
dev_err(edac_dev->dev, "L1 pre-decode parity error\n");
break;
}
/* Clear any HW errors */
writel(val, pg_f + MEMERR_CPU_ICFESR_PAGE_OFFSET);
if (val & (MEMERR_CPU_ICFESR_CERR_MASK |
MEMERR_CPU_ICFESR_MULTCERR_MASK))
edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
chk_lsu:
val = readl(pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET);
if (!val)
goto chk_mmu;
dev_err(edac_dev->dev,
"CPU%d memory error LSU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X\n",
ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val,
MEMERR_CPU_LSUESR_ERRWAY_RD(val),
MEMERR_CPU_LSUESR_ERRINDEX_RD(val),
MEMERR_CPU_LSUESR_ERRINFO_RD(val));
if (val & MEMERR_CPU_LSUESR_CERR_MASK)
dev_err(edac_dev->dev, "One or more correctable error\n");
if (val & MEMERR_CPU_LSUESR_MULTCERR_MASK)
dev_err(edac_dev->dev, "Multiple correctable error\n");
switch (MEMERR_CPU_LSUESR_ERRTYPE_RD(val)) {
case 0:
dev_err(edac_dev->dev, "Load tag error\n");
break;
case 1:
dev_err(edac_dev->dev, "Load data error\n");
break;
case 2:
dev_err(edac_dev->dev, "WSL multihit error\n");
break;
case 3:
dev_err(edac_dev->dev, "Store tag error\n");
break;
case 4:
dev_err(edac_dev->dev,
"DTB multihit from load pipeline error\n");
break;
case 5:
dev_err(edac_dev->dev,
"DTB multihit from store pipeline error\n");
break;
}
/* Clear any HW errors */
writel(val, pg_f + MEMERR_CPU_LSUESR_PAGE_OFFSET);
if (val & (MEMERR_CPU_LSUESR_CERR_MASK |
MEMERR_CPU_LSUESR_MULTCERR_MASK))
edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
chk_mmu:
val = readl(pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET);
if (!val)
return;
dev_err(edac_dev->dev,
"CPU%d memory error MMU 0x%08X Way 0x%02X Index 0x%02X Info 0x%02X %s\n",
ctx->pmd * MAX_CPU_PER_PMD + cpu_idx, val,
MEMERR_CPU_MMUESR_ERRWAY_RD(val),
MEMERR_CPU_MMUESR_ERRINDEX_RD(val),
MEMERR_CPU_MMUESR_ERRINFO_RD(val),
val & MEMERR_CPU_MMUESR_ERRREQSTR_LSU_MASK ? "LSU" : "ICF");
if (val & MEMERR_CPU_MMUESR_CERR_MASK)
dev_err(edac_dev->dev, "One or more correctable error\n");
if (val & MEMERR_CPU_MMUESR_MULTCERR_MASK)
dev_err(edac_dev->dev, "Multiple correctable error\n");
switch (MEMERR_CPU_MMUESR_ERRTYPE_RD(val)) {
case 0:
dev_err(edac_dev->dev, "Stage 1 UTB hit error\n");
break;
case 1:
dev_err(edac_dev->dev, "Stage 1 UTB miss error\n");
break;
case 2:
dev_err(edac_dev->dev, "Stage 1 UTB allocate error\n");
break;
case 3:
dev_err(edac_dev->dev, "TMO operation single bank error\n");
break;
case 4:
dev_err(edac_dev->dev, "Stage 2 UTB error\n");
break;
case 5:
dev_err(edac_dev->dev, "Stage 2 UTB miss error\n");
break;
case 6:
dev_err(edac_dev->dev, "Stage 2 UTB allocate error\n");
break;
case 7:
dev_err(edac_dev->dev, "TMO operation multiple bank error\n");
break;
}
/* Clear any HW errors */
writel(val, pg_f + MEMERR_CPU_MMUESR_PAGE_OFFSET);
edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
}
static void xgene_edac_pmd_l2_check(struct edac_device_ctl_info *edac_dev)
{
struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
void __iomem *pg_d;
void __iomem *pg_e;
u32 val_hi;
u32 val_lo;
u32 val;
/* Check L2 */
pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE;
val = readl(pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET);
if (!val)
goto chk_l2c;
val_lo = readl(pg_e + MEMERR_L2C_L2EALR_PAGE_OFFSET);
val_hi = readl(pg_e + MEMERR_L2C_L2EAHR_PAGE_OFFSET);
dev_err(edac_dev->dev,
"PMD%d memory error L2C L2ESR 0x%08X @ 0x%08X.%08X\n",
ctx->pmd, val, val_hi, val_lo);
dev_err(edac_dev->dev,
"ErrSyndrome 0x%02X ErrWay 0x%02X ErrCpu %d ErrGroup 0x%02X ErrAction 0x%02X\n",
MEMERR_L2C_L2ESR_ERRSYN_RD(val),
MEMERR_L2C_L2ESR_ERRWAY_RD(val),
MEMERR_L2C_L2ESR_ERRCPU_RD(val),
MEMERR_L2C_L2ESR_ERRGROUP_RD(val),
MEMERR_L2C_L2ESR_ERRACTION_RD(val));
if (val & MEMERR_L2C_L2ESR_ERR_MASK)
dev_err(edac_dev->dev, "One or more correctable error\n");
if (val & MEMERR_L2C_L2ESR_MULTICERR_MASK)
dev_err(edac_dev->dev, "Multiple correctable error\n");
if (val & MEMERR_L2C_L2ESR_UCERR_MASK)
dev_err(edac_dev->dev, "One or more uncorrectable error\n");
if (val & MEMERR_L2C_L2ESR_MULTUCERR_MASK)
dev_err(edac_dev->dev, "Multiple uncorrectable error\n");
switch (MEMERR_L2C_L2ESR_ERRTYPE_RD(val)) {
case 0:
dev_err(edac_dev->dev, "Outbound SDB parity error\n");
break;
case 1:
dev_err(edac_dev->dev, "Inbound SDB parity error\n");
break;
case 2:
dev_err(edac_dev->dev, "Tag ECC error\n");
break;
case 3:
dev_err(edac_dev->dev, "Data ECC error\n");
break;
}
/* Clear any HW errors */
writel(val, pg_e + MEMERR_L2C_L2ESR_PAGE_OFFSET);
if (val & (MEMERR_L2C_L2ESR_ERR_MASK |
MEMERR_L2C_L2ESR_MULTICERR_MASK))
edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
if (val & (MEMERR_L2C_L2ESR_UCERR_MASK |
MEMERR_L2C_L2ESR_MULTUCERR_MASK))
edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
chk_l2c:
/* Check if any memory request timed out on L2 cache */
pg_d = ctx->pmd_csr + CPU_L2C_PAGE;
val = readl(pg_d + CPUX_L2C_L2RTOSR_PAGE_OFFSET);
if (val) {
val_lo = readl(pg_d + CPUX_L2C_L2RTOALR_PAGE_OFFSET);
val_hi = readl(pg_d + CPUX_L2C_L2RTOAHR_PAGE_OFFSET);
dev_err(edac_dev->dev,
"PMD%d L2C error L2C RTOSR 0x%08X @ 0x%08X.%08X\n",
ctx->pmd, val, val_hi, val_lo);
writel(val, pg_d + CPUX_L2C_L2RTOSR_PAGE_OFFSET);
}
}
static void xgene_edac_pmd_check(struct edac_device_ctl_info *edac_dev)
{
struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
unsigned int pcp_hp_stat;
int i;
xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat);
if (!((PMD0_MERR_MASK << ctx->pmd) & pcp_hp_stat))
return;
/* Check CPU L1 error */
for (i = 0; i < MAX_CPU_PER_PMD; i++)
xgene_edac_pmd_l1_check(edac_dev, i);
/* Check CPU L2 error */
xgene_edac_pmd_l2_check(edac_dev);
}
static void xgene_edac_pmd_cpu_hw_cfg(struct edac_device_ctl_info *edac_dev,
int cpu)
{
struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
void __iomem *pg_f = ctx->pmd_csr + cpu * CPU_CSR_STRIDE +
CPU_MEMERR_CPU_PAGE;
/*
* Enable CPU memory error:
* MEMERR_CPU_ICFESRA, MEMERR_CPU_LSUESRA, and MEMERR_CPU_MMUESRA
*/
writel(0x00000301, pg_f + MEMERR_CPU_ICFECR_PAGE_OFFSET);
writel(0x00000301, pg_f + MEMERR_CPU_LSUECR_PAGE_OFFSET);
writel(0x00000101, pg_f + MEMERR_CPU_MMUECR_PAGE_OFFSET);
}
static void xgene_edac_pmd_hw_cfg(struct edac_device_ctl_info *edac_dev)
{
struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
void __iomem *pg_d = ctx->pmd_csr + CPU_L2C_PAGE;
void __iomem *pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE;
/* Enable PMD memory error - MEMERR_L2C_L2ECR and L2C_L2RTOCR */
writel(0x00000703, pg_e + MEMERR_L2C_L2ECR_PAGE_OFFSET);
/* Configure L2C HW request time out feature if supported */
if (ctx->version > 1)
writel(0x00000119, pg_d + CPUX_L2C_L2RTOCR_PAGE_OFFSET);
}
static void xgene_edac_pmd_hw_ctl(struct edac_device_ctl_info *edac_dev,
bool enable)
{
struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
int i;
/* Enable PMD error interrupt */
if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
if (enable)
xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
PMD0_MERR_MASK << ctx->pmd);
else
xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
PMD0_MERR_MASK << ctx->pmd);
}
if (enable) {
xgene_edac_pmd_hw_cfg(edac_dev);
/* Two CPUs per a PMD */
for (i = 0; i < MAX_CPU_PER_PMD; i++)
xgene_edac_pmd_cpu_hw_cfg(edac_dev, i);
}
}
static ssize_t xgene_edac_pmd_l1_inject_ctrl_write(struct file *file,
const char __user *data,
size_t count, loff_t *ppos)
{
struct edac_device_ctl_info *edac_dev = file->private_data;
struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
void __iomem *cpux_pg_f;
int i;
for (i = 0; i < MAX_CPU_PER_PMD; i++) {
cpux_pg_f = ctx->pmd_csr + i * CPU_CSR_STRIDE +
CPU_MEMERR_CPU_PAGE;
writel(MEMERR_CPU_ICFESR_MULTCERR_MASK |
MEMERR_CPU_ICFESR_CERR_MASK,
cpux_pg_f + MEMERR_CPU_ICFESRA_PAGE_OFFSET);
writel(MEMERR_CPU_LSUESR_MULTCERR_MASK |
MEMERR_CPU_LSUESR_CERR_MASK,
cpux_pg_f + MEMERR_CPU_LSUESRA_PAGE_OFFSET);
writel(MEMERR_CPU_MMUESR_MULTCERR_MASK |
MEMERR_CPU_MMUESR_CERR_MASK,
cpux_pg_f + MEMERR_CPU_MMUESRA_PAGE_OFFSET);
}
return count;
}
static ssize_t xgene_edac_pmd_l2_inject_ctrl_write(struct file *file,
const char __user *data,
size_t count, loff_t *ppos)
{
struct edac_device_ctl_info *edac_dev = file->private_data;
struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
void __iomem *pg_e = ctx->pmd_csr + CPU_MEMERR_L2C_PAGE;
writel(MEMERR_L2C_L2ESR_MULTUCERR_MASK |
MEMERR_L2C_L2ESR_MULTICERR_MASK |
MEMERR_L2C_L2ESR_UCERR_MASK |
MEMERR_L2C_L2ESR_ERR_MASK,
pg_e + MEMERR_L2C_L2ESRA_PAGE_OFFSET);
return count;
}
static const struct file_operations xgene_edac_pmd_debug_inject_fops[] = {
{
.open = simple_open,
.write = xgene_edac_pmd_l1_inject_ctrl_write,
.llseek = generic_file_llseek, },
{
.open = simple_open,
.write = xgene_edac_pmd_l2_inject_ctrl_write,
.llseek = generic_file_llseek, },
{ }
};
static void
xgene_edac_pmd_create_debugfs_nodes(struct edac_device_ctl_info *edac_dev)
{
struct xgene_edac_pmd_ctx *ctx = edac_dev->pvt_info;
struct dentry *dbgfs_dir;
char name[10];
if (!IS_ENABLED(CONFIG_EDAC_DEBUG) || !ctx->edac->dfs)
return;
snprintf(name, sizeof(name), "PMD%d", ctx->pmd);
dbgfs_dir = edac_debugfs_create_dir_at(name, ctx->edac->dfs);
if (!dbgfs_dir)
return;
edac_debugfs_create_file("l1_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev,
&xgene_edac_pmd_debug_inject_fops[0]);
edac_debugfs_create_file("l2_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev,
&xgene_edac_pmd_debug_inject_fops[1]);
}
static int xgene_edac_pmd_available(u32 efuse, int pmd)
{
return (efuse & (1 << pmd)) ? 0 : 1;
}
static int xgene_edac_pmd_add(struct xgene_edac *edac, struct device_node *np,
int version)
{
struct edac_device_ctl_info *edac_dev;
struct xgene_edac_pmd_ctx *ctx;
struct resource res;
char edac_name[10];
u32 pmd;
int rc;
u32 val;
if (!devres_open_group(edac->dev, xgene_edac_pmd_add, GFP_KERNEL))
return -ENOMEM;
/* Determine if this PMD is disabled */
if (of_property_read_u32(np, "pmd-controller", &pmd)) {
dev_err(edac->dev, "no pmd-controller property\n");
rc = -ENODEV;
goto err_group;
}
rc = regmap_read(edac->efuse_map, 0, &val);
if (rc)
goto err_group;
if (!xgene_edac_pmd_available(val, pmd)) {
rc = -ENODEV;
goto err_group;
}
snprintf(edac_name, sizeof(edac_name), "l2c%d", pmd);
edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
edac_name, 1, "l2c", 1, 2, NULL,
0, edac_device_alloc_index());
if (!edac_dev) {
rc = -ENOMEM;
goto err_group;
}
ctx = edac_dev->pvt_info;
ctx->name = "xgene_pmd_err";
ctx->pmd = pmd;
ctx->edac = edac;
ctx->edac_dev = edac_dev;
ctx->ddev = *edac->dev;
ctx->version = version;
edac_dev->dev = &ctx->ddev;
edac_dev->ctl_name = ctx->name;
edac_dev->dev_name = ctx->name;
edac_dev->mod_name = EDAC_MOD_STR;
rc = of_address_to_resource(np, 0, &res);
if (rc < 0) {
dev_err(edac->dev, "no PMD resource address\n");
goto err_free;
}
ctx->pmd_csr = devm_ioremap_resource(edac->dev, &res);
if (IS_ERR(ctx->pmd_csr)) {
dev_err(edac->dev,
"devm_ioremap_resource failed for PMD resource address\n");
rc = PTR_ERR(ctx->pmd_csr);
goto err_free;
}
if (edac_op_state == EDAC_OPSTATE_POLL)
edac_dev->edac_check = xgene_edac_pmd_check;
xgene_edac_pmd_create_debugfs_nodes(edac_dev);
rc = edac_device_add_device(edac_dev);
if (rc > 0) {
dev_err(edac->dev, "edac_device_add_device failed\n");
rc = -ENOMEM;
goto err_free;
}
if (edac_op_state == EDAC_OPSTATE_INT)
edac_dev->op_state = OP_RUNNING_INTERRUPT;
list_add(&ctx->next, &edac->pmds);
xgene_edac_pmd_hw_ctl(edac_dev, 1);
devres_remove_group(edac->dev, xgene_edac_pmd_add);
dev_info(edac->dev, "X-Gene EDAC PMD%d registered\n", ctx->pmd);
return 0;
err_free:
edac_device_free_ctl_info(edac_dev);
err_group:
devres_release_group(edac->dev, xgene_edac_pmd_add);
return rc;
}
static int xgene_edac_pmd_remove(struct xgene_edac_pmd_ctx *pmd)
{
struct edac_device_ctl_info *edac_dev = pmd->edac_dev;
xgene_edac_pmd_hw_ctl(edac_dev, 0);
edac_device_del_device(edac_dev->dev);
edac_device_free_ctl_info(edac_dev);
return 0;
}
/* L3 Error device */
#define L3C_ESR (0x0A * 4)
#define L3C_ESR_DATATAG_MASK BIT(9)
#define L3C_ESR_MULTIHIT_MASK BIT(8)
#define L3C_ESR_UCEVICT_MASK BIT(6)
#define L3C_ESR_MULTIUCERR_MASK BIT(5)
#define L3C_ESR_MULTICERR_MASK BIT(4)
#define L3C_ESR_UCERR_MASK BIT(3)
#define L3C_ESR_CERR_MASK BIT(2)
#define L3C_ESR_UCERRINTR_MASK BIT(1)
#define L3C_ESR_CERRINTR_MASK BIT(0)
#define L3C_ECR (0x0B * 4)
#define L3C_ECR_UCINTREN BIT(3)
#define L3C_ECR_CINTREN BIT(2)
#define L3C_UCERREN BIT(1)
#define L3C_CERREN BIT(0)
#define L3C_ELR (0x0C * 4)
#define L3C_ELR_ERRSYN(src) ((src & 0xFF800000) >> 23)
#define L3C_ELR_ERRWAY(src) ((src & 0x007E0000) >> 17)
#define L3C_ELR_AGENTID(src) ((src & 0x0001E000) >> 13)
#define L3C_ELR_ERRGRP(src) ((src & 0x00000F00) >> 8)
#define L3C_ELR_OPTYPE(src) ((src & 0x000000F0) >> 4)
#define L3C_ELR_PADDRHIGH(src) (src & 0x0000000F)
#define L3C_AELR (0x0D * 4)
#define L3C_BELR (0x0E * 4)
#define L3C_BELR_BANK(src) (src & 0x0000000F)
struct xgene_edac_dev_ctx {
struct list_head next;
struct device ddev;
char *name;
struct xgene_edac *edac;
struct edac_device_ctl_info *edac_dev;
int edac_idx;
void __iomem *dev_csr;
int version;
};
/*
* Version 1 of the L3 controller has broken single bit correctable logic for
* certain error syndromes. Log them as uncorrectable in that case.
*/
static bool xgene_edac_l3_promote_to_uc_err(u32 l3cesr, u32 l3celr)
{
if (l3cesr & L3C_ESR_DATATAG_MASK) {
switch (L3C_ELR_ERRSYN(l3celr)) {
case 0x13C:
case 0x0B4:
case 0x007:
case 0x00D:
case 0x00E:
case 0x019:
case 0x01A:
case 0x01C:
case 0x04E:
case 0x041:
return true;
}
} else if (L3C_ELR_ERRWAY(l3celr) == 9)
return true;
return false;
}
static void xgene_edac_l3_check(struct edac_device_ctl_info *edac_dev)
{
struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
u32 l3cesr;
u32 l3celr;
u32 l3caelr;
u32 l3cbelr;
l3cesr = readl(ctx->dev_csr + L3C_ESR);
if (!(l3cesr & (L3C_ESR_UCERR_MASK | L3C_ESR_CERR_MASK)))
return;
if (l3cesr & L3C_ESR_UCERR_MASK)
dev_err(edac_dev->dev, "L3C uncorrectable error\n");
if (l3cesr & L3C_ESR_CERR_MASK)
dev_warn(edac_dev->dev, "L3C correctable error\n");
l3celr = readl(ctx->dev_csr + L3C_ELR);
l3caelr = readl(ctx->dev_csr + L3C_AELR);
l3cbelr = readl(ctx->dev_csr + L3C_BELR);
if (l3cesr & L3C_ESR_MULTIHIT_MASK)
dev_err(edac_dev->dev, "L3C multiple hit error\n");
if (l3cesr & L3C_ESR_UCEVICT_MASK)
dev_err(edac_dev->dev,
"L3C dropped eviction of line with error\n");
if (l3cesr & L3C_ESR_MULTIUCERR_MASK)
dev_err(edac_dev->dev, "L3C multiple uncorrectable error\n");
if (l3cesr & L3C_ESR_DATATAG_MASK)
dev_err(edac_dev->dev,
"L3C data error syndrome 0x%X group 0x%X\n",
L3C_ELR_ERRSYN(l3celr), L3C_ELR_ERRGRP(l3celr));
else
dev_err(edac_dev->dev,
"L3C tag error syndrome 0x%X Way of Tag 0x%X Agent ID 0x%X Operation type 0x%X\n",
L3C_ELR_ERRSYN(l3celr), L3C_ELR_ERRWAY(l3celr),
L3C_ELR_AGENTID(l3celr), L3C_ELR_OPTYPE(l3celr));
/*
* NOTE: Address [41:38] in L3C_ELR_PADDRHIGH(l3celr).
* Address [37:6] in l3caelr. Lower 6 bits are zero.
*/
dev_err(edac_dev->dev, "L3C error address 0x%08X.%08X bank %d\n",
L3C_ELR_PADDRHIGH(l3celr) << 6 | (l3caelr >> 26),
(l3caelr & 0x3FFFFFFF) << 6, L3C_BELR_BANK(l3cbelr));
dev_err(edac_dev->dev,
"L3C error status register value 0x%X\n", l3cesr);
/* Clear L3C error interrupt */
writel(0, ctx->dev_csr + L3C_ESR);
if (ctx->version <= 1 &&
xgene_edac_l3_promote_to_uc_err(l3cesr, l3celr)) {
edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
return;
}
if (l3cesr & L3C_ESR_CERR_MASK)
edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
if (l3cesr & L3C_ESR_UCERR_MASK)
edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
}
static void xgene_edac_l3_hw_init(struct edac_device_ctl_info *edac_dev,
bool enable)
{
struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
u32 val;
val = readl(ctx->dev_csr + L3C_ECR);
val |= L3C_UCERREN | L3C_CERREN;
/* On disable, we just disable interrupt but keep error enabled */
if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
if (enable)
val |= L3C_ECR_UCINTREN | L3C_ECR_CINTREN;
else
val &= ~(L3C_ECR_UCINTREN | L3C_ECR_CINTREN);
}
writel(val, ctx->dev_csr + L3C_ECR);
if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
/* Enable/disable L3 error top level interrupt */
if (enable) {
xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
L3C_UNCORR_ERR_MASK);
xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
L3C_CORR_ERR_MASK);
} else {
xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
L3C_UNCORR_ERR_MASK);
xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
L3C_CORR_ERR_MASK);
}
}
}
static ssize_t xgene_edac_l3_inject_ctrl_write(struct file *file,
const char __user *data,
size_t count, loff_t *ppos)
{
struct edac_device_ctl_info *edac_dev = file->private_data;
struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
/* Generate all errors */
writel(0xFFFFFFFF, ctx->dev_csr + L3C_ESR);
return count;
}
static const struct file_operations xgene_edac_l3_debug_inject_fops = {
.open = simple_open,
.write = xgene_edac_l3_inject_ctrl_write,
.llseek = generic_file_llseek
};
static void
xgene_edac_l3_create_debugfs_nodes(struct edac_device_ctl_info *edac_dev)
{
struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
struct dentry *dbgfs_dir;
char name[10];
if (!IS_ENABLED(CONFIG_EDAC_DEBUG) || !ctx->edac->dfs)
return;
snprintf(name, sizeof(name), "l3c%d", ctx->edac_idx);
dbgfs_dir = edac_debugfs_create_dir_at(name, ctx->edac->dfs);
if (!dbgfs_dir)
return;
debugfs_create_file("l3_inject_ctrl", S_IWUSR, dbgfs_dir, edac_dev,
&xgene_edac_l3_debug_inject_fops);
}
static int xgene_edac_l3_add(struct xgene_edac *edac, struct device_node *np,
int version)
{
struct edac_device_ctl_info *edac_dev;
struct xgene_edac_dev_ctx *ctx;
struct resource res;
void __iomem *dev_csr;
int edac_idx;
int rc = 0;
if (!devres_open_group(edac->dev, xgene_edac_l3_add, GFP_KERNEL))
return -ENOMEM;
rc = of_address_to_resource(np, 0, &res);
if (rc < 0) {
dev_err(edac->dev, "no L3 resource address\n");
goto err_release_group;
}
dev_csr = devm_ioremap_resource(edac->dev, &res);
if (IS_ERR(dev_csr)) {
dev_err(edac->dev,
"devm_ioremap_resource failed for L3 resource address\n");
rc = PTR_ERR(dev_csr);
goto err_release_group;
}
edac_idx = edac_device_alloc_index();
edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
"l3c", 1, "l3c", 1, 0, NULL, 0,
edac_idx);
if (!edac_dev) {
rc = -ENOMEM;
goto err_release_group;
}
ctx = edac_dev->pvt_info;
ctx->dev_csr = dev_csr;
ctx->name = "xgene_l3_err";
ctx->edac_idx = edac_idx;
ctx->edac = edac;
ctx->edac_dev = edac_dev;
ctx->ddev = *edac->dev;
ctx->version = version;
edac_dev->dev = &ctx->ddev;
edac_dev->ctl_name = ctx->name;
edac_dev->dev_name = ctx->name;
edac_dev->mod_name = EDAC_MOD_STR;
if (edac_op_state == EDAC_OPSTATE_POLL)
edac_dev->edac_check = xgene_edac_l3_check;
xgene_edac_l3_create_debugfs_nodes(edac_dev);
rc = edac_device_add_device(edac_dev);
if (rc > 0) {
dev_err(edac->dev, "failed edac_device_add_device()\n");
rc = -ENOMEM;
goto err_ctl_free;
}
if (edac_op_state == EDAC_OPSTATE_INT)
edac_dev->op_state = OP_RUNNING_INTERRUPT;
list_add(&ctx->next, &edac->l3s);
xgene_edac_l3_hw_init(edac_dev, 1);
devres_remove_group(edac->dev, xgene_edac_l3_add);
dev_info(edac->dev, "X-Gene EDAC L3 registered\n");
return 0;
err_ctl_free:
edac_device_free_ctl_info(edac_dev);
err_release_group:
devres_release_group(edac->dev, xgene_edac_l3_add);
return rc;
}
static int xgene_edac_l3_remove(struct xgene_edac_dev_ctx *l3)
{
struct edac_device_ctl_info *edac_dev = l3->edac_dev;
xgene_edac_l3_hw_init(edac_dev, 0);
edac_device_del_device(l3->edac->dev);
edac_device_free_ctl_info(edac_dev);
return 0;
}
/* SoC error device */
#define IOBAXIS0TRANSERRINTSTS 0x0000
#define IOBAXIS0_M_ILLEGAL_ACCESS_MASK BIT(1)
#define IOBAXIS0_ILLEGAL_ACCESS_MASK BIT(0)
#define IOBAXIS0TRANSERRINTMSK 0x0004
#define IOBAXIS0TRANSERRREQINFOL 0x0008
#define IOBAXIS0TRANSERRREQINFOH 0x000c
#define REQTYPE_RD(src) (((src) & BIT(0)))
#define ERRADDRH_RD(src) (((src) & 0xffc00000) >> 22)
#define IOBAXIS1TRANSERRINTSTS 0x0010
#define IOBAXIS1TRANSERRINTMSK 0x0014
#define IOBAXIS1TRANSERRREQINFOL 0x0018
#define IOBAXIS1TRANSERRREQINFOH 0x001c
#define IOBPATRANSERRINTSTS 0x0020
#define IOBPA_M_REQIDRAM_CORRUPT_MASK BIT(7)
#define IOBPA_REQIDRAM_CORRUPT_MASK BIT(6)
#define IOBPA_M_TRANS_CORRUPT_MASK BIT(5)
#define IOBPA_TRANS_CORRUPT_MASK BIT(4)
#define IOBPA_M_WDATA_CORRUPT_MASK BIT(3)
#define IOBPA_WDATA_CORRUPT_MASK BIT(2)
#define IOBPA_M_RDATA_CORRUPT_MASK BIT(1)
#define IOBPA_RDATA_CORRUPT_MASK BIT(0)
#define IOBBATRANSERRINTSTS 0x0030
#define M_ILLEGAL_ACCESS_MASK BIT(15)
#define ILLEGAL_ACCESS_MASK BIT(14)
#define M_WIDRAM_CORRUPT_MASK BIT(13)
#define WIDRAM_CORRUPT_MASK BIT(12)
#define M_RIDRAM_CORRUPT_MASK BIT(11)
#define RIDRAM_CORRUPT_MASK BIT(10)
#define M_TRANS_CORRUPT_MASK BIT(9)
#define TRANS_CORRUPT_MASK BIT(8)
#define M_WDATA_CORRUPT_MASK BIT(7)
#define WDATA_CORRUPT_MASK BIT(6)
#define M_RBM_POISONED_REQ_MASK BIT(5)
#define RBM_POISONED_REQ_MASK BIT(4)
#define M_XGIC_POISONED_REQ_MASK BIT(3)
#define XGIC_POISONED_REQ_MASK BIT(2)
#define M_WRERR_RESP_MASK BIT(1)
#define WRERR_RESP_MASK BIT(0)
#define IOBBATRANSERRREQINFOL 0x0038
#define IOBBATRANSERRREQINFOH 0x003c
#define REQTYPE_F2_RD(src) ((src) & BIT(0))
#define ERRADDRH_F2_RD(src) (((src) & 0xffc00000) >> 22)
#define IOBBATRANSERRCSWREQID 0x0040
#define XGICTRANSERRINTSTS 0x0050
#define M_WR_ACCESS_ERR_MASK BIT(3)
#define WR_ACCESS_ERR_MASK BIT(2)
#define M_RD_ACCESS_ERR_MASK BIT(1)
#define RD_ACCESS_ERR_MASK BIT(0)
#define XGICTRANSERRINTMSK 0x0054
#define XGICTRANSERRREQINFO 0x0058
#define REQTYPE_MASK BIT(26)
#define ERRADDR_RD(src) ((src) & 0x03ffffff)
#define GLBL_ERR_STS 0x0800
#define MDED_ERR_MASK BIT(3)
#define DED_ERR_MASK BIT(2)
#define MSEC_ERR_MASK BIT(1)
#define SEC_ERR_MASK BIT(0)
#define GLBL_SEC_ERRL 0x0810
#define GLBL_SEC_ERRH 0x0818
#define GLBL_MSEC_ERRL 0x0820
#define GLBL_MSEC_ERRH 0x0828
#define GLBL_DED_ERRL 0x0830
#define GLBL_DED_ERRLMASK 0x0834
#define GLBL_DED_ERRH 0x0838
#define GLBL_DED_ERRHMASK 0x083c
#define GLBL_MDED_ERRL 0x0840
#define GLBL_MDED_ERRLMASK 0x0844
#define GLBL_MDED_ERRH 0x0848
#define GLBL_MDED_ERRHMASK 0x084c
/* IO Bus Registers */
#define RBCSR 0x0000
#define STICKYERR_MASK BIT(0)
#define RBEIR 0x0008
#define AGENT_OFFLINE_ERR_MASK BIT(30)
#define UNIMPL_RBPAGE_ERR_MASK BIT(29)
#define WORD_ALIGNED_ERR_MASK BIT(28)
#define PAGE_ACCESS_ERR_MASK BIT(27)
#define WRITE_ACCESS_MASK BIT(26)
static const char * const soc_mem_err_v1[] = {
"10GbE0",
"10GbE1",
"Security",
"SATA45",
"SATA23/ETH23",
"SATA01/ETH01",
"USB1",
"USB0",
"QML",
"QM0",
"QM1 (XGbE01)",
"PCIE4",
"PCIE3",
"PCIE2",
"PCIE1",
"PCIE0",
"CTX Manager",
"OCM",
"1GbE",
"CLE",
"AHBC",
"PktDMA",
"GFC",
"MSLIM",
"10GbE2",
"10GbE3",
"QM2 (XGbE23)",
"IOB",
"unknown",
"unknown",
"unknown",
"unknown",
};
static void xgene_edac_iob_gic_report(struct edac_device_ctl_info *edac_dev)
{
struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
u32 err_addr_lo;
u32 err_addr_hi;
u32 reg;
u32 info;
/* GIC transaction error interrupt */
reg = readl(ctx->dev_csr + XGICTRANSERRINTSTS);
if (!reg)
goto chk_iob_err;
dev_err(edac_dev->dev, "XGIC transaction error\n");
if (reg & RD_ACCESS_ERR_MASK)
dev_err(edac_dev->dev, "XGIC read size error\n");
if (reg & M_RD_ACCESS_ERR_MASK)
dev_err(edac_dev->dev, "Multiple XGIC read size error\n");
if (reg & WR_ACCESS_ERR_MASK)
dev_err(edac_dev->dev, "XGIC write size error\n");
if (reg & M_WR_ACCESS_ERR_MASK)
dev_err(edac_dev->dev, "Multiple XGIC write size error\n");
info = readl(ctx->dev_csr + XGICTRANSERRREQINFO);
dev_err(edac_dev->dev, "XGIC %s access @ 0x%08X (0x%08X)\n",
info & REQTYPE_MASK ? "read" : "write", ERRADDR_RD(info),
info);
writel(reg, ctx->dev_csr + XGICTRANSERRINTSTS);
chk_iob_err:
/* IOB memory error */
reg = readl(ctx->dev_csr + GLBL_ERR_STS);
if (!reg)
return;
if (reg & SEC_ERR_MASK) {
err_addr_lo = readl(ctx->dev_csr + GLBL_SEC_ERRL);
err_addr_hi = readl(ctx->dev_csr + GLBL_SEC_ERRH);
dev_err(edac_dev->dev,
"IOB single-bit correctable memory at 0x%08X.%08X error\n",
err_addr_lo, err_addr_hi);
writel(err_addr_lo, ctx->dev_csr + GLBL_SEC_ERRL);
writel(err_addr_hi, ctx->dev_csr + GLBL_SEC_ERRH);
}
if (reg & MSEC_ERR_MASK) {
err_addr_lo = readl(ctx->dev_csr + GLBL_MSEC_ERRL);
err_addr_hi = readl(ctx->dev_csr + GLBL_MSEC_ERRH);
dev_err(edac_dev->dev,
"IOB multiple single-bit correctable memory at 0x%08X.%08X error\n",
err_addr_lo, err_addr_hi);
writel(err_addr_lo, ctx->dev_csr + GLBL_MSEC_ERRL);
writel(err_addr_hi, ctx->dev_csr + GLBL_MSEC_ERRH);
}
if (reg & (SEC_ERR_MASK | MSEC_ERR_MASK))
edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
if (reg & DED_ERR_MASK) {
err_addr_lo = readl(ctx->dev_csr + GLBL_DED_ERRL);
err_addr_hi = readl(ctx->dev_csr + GLBL_DED_ERRH);
dev_err(edac_dev->dev,
"IOB double-bit uncorrectable memory at 0x%08X.%08X error\n",
err_addr_lo, err_addr_hi);
writel(err_addr_lo, ctx->dev_csr + GLBL_DED_ERRL);
writel(err_addr_hi, ctx->dev_csr + GLBL_DED_ERRH);
}
if (reg & MDED_ERR_MASK) {
err_addr_lo = readl(ctx->dev_csr + GLBL_MDED_ERRL);
err_addr_hi = readl(ctx->dev_csr + GLBL_MDED_ERRH);
dev_err(edac_dev->dev,
"Multiple IOB double-bit uncorrectable memory at 0x%08X.%08X error\n",
err_addr_lo, err_addr_hi);
writel(err_addr_lo, ctx->dev_csr + GLBL_MDED_ERRL);
writel(err_addr_hi, ctx->dev_csr + GLBL_MDED_ERRH);
}
if (reg & (DED_ERR_MASK | MDED_ERR_MASK))
edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
}
static void xgene_edac_rb_report(struct edac_device_ctl_info *edac_dev)
{
struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
u32 err_addr_lo;
u32 err_addr_hi;
u32 reg;
/* If the register bus resource isn't available, just skip it */
if (!ctx->edac->rb_map)
goto rb_skip;
/*
* Check RB access errors
* 1. Out of range
* 2. Un-implemented page
* 3. Un-aligned access
* 4. Offline slave IP
*/
if (regmap_read(ctx->edac->rb_map, RBCSR, &reg))
return;
if (reg & STICKYERR_MASK) {
bool write;
dev_err(edac_dev->dev, "IOB bus access error(s)\n");
if (regmap_read(ctx->edac->rb_map, RBEIR, &reg))
return;
write = reg & WRITE_ACCESS_MASK ? 1 : 0;
if (reg & AGENT_OFFLINE_ERR_MASK)
dev_err(edac_dev->dev,
"IOB bus %s access to offline agent error\n",
write ? "write" : "read");
if (reg & UNIMPL_RBPAGE_ERR_MASK)
dev_err(edac_dev->dev,
"IOB bus %s access to unimplemented page error\n",
write ? "write" : "read");
if (reg & WORD_ALIGNED_ERR_MASK)
dev_err(edac_dev->dev,
"IOB bus %s word aligned access error\n",
write ? "write" : "read");
if (reg & PAGE_ACCESS_ERR_MASK)
dev_err(edac_dev->dev,
"IOB bus %s to page out of range access error\n",
write ? "write" : "read");
if (regmap_write(ctx->edac->rb_map, RBEIR, 0))
return;
if (regmap_write(ctx->edac->rb_map, RBCSR, 0))
return;
}
rb_skip:
/* IOB Bridge agent transaction error interrupt */
reg = readl(ctx->dev_csr + IOBBATRANSERRINTSTS);
if (!reg)
return;
dev_err(edac_dev->dev, "IOB bridge agent (BA) transaction error\n");
if (reg & WRERR_RESP_MASK)
dev_err(edac_dev->dev, "IOB BA write response error\n");
if (reg & M_WRERR_RESP_MASK)
dev_err(edac_dev->dev,
"Multiple IOB BA write response error\n");
if (reg & XGIC_POISONED_REQ_MASK)
dev_err(edac_dev->dev, "IOB BA XGIC poisoned write error\n");
if (reg & M_XGIC_POISONED_REQ_MASK)
dev_err(edac_dev->dev,
"Multiple IOB BA XGIC poisoned write error\n");
if (reg & RBM_POISONED_REQ_MASK)
dev_err(edac_dev->dev, "IOB BA RBM poisoned write error\n");
if (reg & M_RBM_POISONED_REQ_MASK)
dev_err(edac_dev->dev,
"Multiple IOB BA RBM poisoned write error\n");
if (reg & WDATA_CORRUPT_MASK)
dev_err(edac_dev->dev, "IOB BA write error\n");
if (reg & M_WDATA_CORRUPT_MASK)
dev_err(edac_dev->dev, "Multiple IOB BA write error\n");
if (reg & TRANS_CORRUPT_MASK)
dev_err(edac_dev->dev, "IOB BA transaction error\n");
if (reg & M_TRANS_CORRUPT_MASK)
dev_err(edac_dev->dev, "Multiple IOB BA transaction error\n");
if (reg & RIDRAM_CORRUPT_MASK)
dev_err(edac_dev->dev,
"IOB BA RDIDRAM read transaction ID error\n");
if (reg & M_RIDRAM_CORRUPT_MASK)
dev_err(edac_dev->dev,
"Multiple IOB BA RDIDRAM read transaction ID error\n");
if (reg & WIDRAM_CORRUPT_MASK)
dev_err(edac_dev->dev,
"IOB BA RDIDRAM write transaction ID error\n");
if (reg & M_WIDRAM_CORRUPT_MASK)
dev_err(edac_dev->dev,
"Multiple IOB BA RDIDRAM write transaction ID error\n");
if (reg & ILLEGAL_ACCESS_MASK)
dev_err(edac_dev->dev,
"IOB BA XGIC/RB illegal access error\n");
if (reg & M_ILLEGAL_ACCESS_MASK)
dev_err(edac_dev->dev,
"Multiple IOB BA XGIC/RB illegal access error\n");
err_addr_lo = readl(ctx->dev_csr + IOBBATRANSERRREQINFOL);
err_addr_hi = readl(ctx->dev_csr + IOBBATRANSERRREQINFOH);
dev_err(edac_dev->dev, "IOB BA %s access at 0x%02X.%08X (0x%08X)\n",
REQTYPE_F2_RD(err_addr_hi) ? "read" : "write",
ERRADDRH_F2_RD(err_addr_hi), err_addr_lo, err_addr_hi);
if (reg & WRERR_RESP_MASK)
dev_err(edac_dev->dev, "IOB BA requestor ID 0x%08X\n",
readl(ctx->dev_csr + IOBBATRANSERRCSWREQID));
writel(reg, ctx->dev_csr + IOBBATRANSERRINTSTS);
}
static void xgene_edac_pa_report(struct edac_device_ctl_info *edac_dev)
{
struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
u32 err_addr_lo;
u32 err_addr_hi;
u32 reg;
/* IOB Processing agent transaction error interrupt */
reg = readl(ctx->dev_csr + IOBPATRANSERRINTSTS);
if (!reg)
goto chk_iob_axi0;
dev_err(edac_dev->dev, "IOB processing agent (PA) transaction error\n");
if (reg & IOBPA_RDATA_CORRUPT_MASK)
dev_err(edac_dev->dev, "IOB PA read data RAM error\n");
if (reg & IOBPA_M_RDATA_CORRUPT_MASK)
dev_err(edac_dev->dev,
"Multiple IOB PA read data RAM error\n");
if (reg & IOBPA_WDATA_CORRUPT_MASK)
dev_err(edac_dev->dev, "IOB PA write data RAM error\n");
if (reg & IOBPA_M_WDATA_CORRUPT_MASK)
dev_err(edac_dev->dev,
"Multiple IOB PA write data RAM error\n");
if (reg & IOBPA_TRANS_CORRUPT_MASK)
dev_err(edac_dev->dev, "IOB PA transaction error\n");
if (reg & IOBPA_M_TRANS_CORRUPT_MASK)
dev_err(edac_dev->dev, "Multiple IOB PA transaction error\n");
if (reg & IOBPA_REQIDRAM_CORRUPT_MASK)
dev_err(edac_dev->dev, "IOB PA transaction ID RAM error\n");
if (reg & IOBPA_M_REQIDRAM_CORRUPT_MASK)
dev_err(edac_dev->dev,
"Multiple IOB PA transaction ID RAM error\n");
writel(reg, ctx->dev_csr + IOBPATRANSERRINTSTS);
chk_iob_axi0:
/* IOB AXI0 Error */
reg = readl(ctx->dev_csr + IOBAXIS0TRANSERRINTSTS);
if (!reg)
goto chk_iob_axi1;
err_addr_lo = readl(ctx->dev_csr + IOBAXIS0TRANSERRREQINFOL);
err_addr_hi = readl(ctx->dev_csr + IOBAXIS0TRANSERRREQINFOH);
dev_err(edac_dev->dev,
"%sAXI slave 0 illegal %s access @ 0x%02X.%08X (0x%08X)\n",
reg & IOBAXIS0_M_ILLEGAL_ACCESS_MASK ? "Multiple " : "",
REQTYPE_RD(err_addr_hi) ? "read" : "write",
ERRADDRH_RD(err_addr_hi), err_addr_lo, err_addr_hi);
writel(reg, ctx->dev_csr + IOBAXIS0TRANSERRINTSTS);
chk_iob_axi1:
/* IOB AXI1 Error */
reg = readl(ctx->dev_csr + IOBAXIS1TRANSERRINTSTS);
if (!reg)
return;
err_addr_lo = readl(ctx->dev_csr + IOBAXIS1TRANSERRREQINFOL);
err_addr_hi = readl(ctx->dev_csr + IOBAXIS1TRANSERRREQINFOH);
dev_err(edac_dev->dev,
"%sAXI slave 1 illegal %s access @ 0x%02X.%08X (0x%08X)\n",
reg & IOBAXIS0_M_ILLEGAL_ACCESS_MASK ? "Multiple " : "",
REQTYPE_RD(err_addr_hi) ? "read" : "write",
ERRADDRH_RD(err_addr_hi), err_addr_lo, err_addr_hi);
writel(reg, ctx->dev_csr + IOBAXIS1TRANSERRINTSTS);
}
static void xgene_edac_soc_check(struct edac_device_ctl_info *edac_dev)
{
struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
const char * const *soc_mem_err = NULL;
u32 pcp_hp_stat;
u32 pcp_lp_stat;
u32 reg;
int i;
xgene_edac_pcp_rd(ctx->edac, PCPHPERRINTSTS, &pcp_hp_stat);
xgene_edac_pcp_rd(ctx->edac, PCPLPERRINTSTS, &pcp_lp_stat);
xgene_edac_pcp_rd(ctx->edac, MEMERRINTSTS, &reg);
if (!((pcp_hp_stat & (IOB_PA_ERR_MASK | IOB_BA_ERR_MASK |
IOB_XGIC_ERR_MASK | IOB_RB_ERR_MASK)) ||
(pcp_lp_stat & CSW_SWITCH_TRACE_ERR_MASK) || reg))
return;
if (pcp_hp_stat & IOB_XGIC_ERR_MASK)
xgene_edac_iob_gic_report(edac_dev);
if (pcp_hp_stat & (IOB_RB_ERR_MASK | IOB_BA_ERR_MASK))
xgene_edac_rb_report(edac_dev);
if (pcp_hp_stat & IOB_PA_ERR_MASK)
xgene_edac_pa_report(edac_dev);
if (pcp_lp_stat & CSW_SWITCH_TRACE_ERR_MASK) {
dev_info(edac_dev->dev,
"CSW switch trace correctable memory parity error\n");
edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
}
if (!reg)
return;
if (ctx->version == 1)
soc_mem_err = soc_mem_err_v1;
if (!soc_mem_err) {
dev_err(edac_dev->dev, "SoC memory parity error 0x%08X\n",
reg);
edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
return;
}
for (i = 0; i < 31; i++) {
if (reg & (1 << i)) {
dev_err(edac_dev->dev, "%s memory parity error\n",
soc_mem_err[i]);
edac_device_handle_ue(edac_dev, 0, 0,
edac_dev->ctl_name);
}
}
}
static void xgene_edac_soc_hw_init(struct edac_device_ctl_info *edac_dev,
bool enable)
{
struct xgene_edac_dev_ctx *ctx = edac_dev->pvt_info;
/* Enable SoC IP error interrupt */
if (edac_dev->op_state == OP_RUNNING_INTERRUPT) {
if (enable) {
xgene_edac_pcp_clrbits(ctx->edac, PCPHPERRINTMSK,
IOB_PA_ERR_MASK |
IOB_BA_ERR_MASK |
IOB_XGIC_ERR_MASK |
IOB_RB_ERR_MASK);
xgene_edac_pcp_clrbits(ctx->edac, PCPLPERRINTMSK,
CSW_SWITCH_TRACE_ERR_MASK);
} else {
xgene_edac_pcp_setbits(ctx->edac, PCPHPERRINTMSK,
IOB_PA_ERR_MASK |
IOB_BA_ERR_MASK |
IOB_XGIC_ERR_MASK |
IOB_RB_ERR_MASK);
xgene_edac_pcp_setbits(ctx->edac, PCPLPERRINTMSK,
CSW_SWITCH_TRACE_ERR_MASK);
}
writel(enable ? 0x0 : 0xFFFFFFFF,
ctx->dev_csr + IOBAXIS0TRANSERRINTMSK);
writel(enable ? 0x0 : 0xFFFFFFFF,
ctx->dev_csr + IOBAXIS1TRANSERRINTMSK);
writel(enable ? 0x0 : 0xFFFFFFFF,
ctx->dev_csr + XGICTRANSERRINTMSK);
xgene_edac_pcp_setbits(ctx->edac, MEMERRINTMSK,
enable ? 0x0 : 0xFFFFFFFF);
}
}
static int xgene_edac_soc_add(struct xgene_edac *edac, struct device_node *np,
int version)
{
struct edac_device_ctl_info *edac_dev;
struct xgene_edac_dev_ctx *ctx;
void __iomem *dev_csr;
struct resource res;
int edac_idx;
int rc;
if (!devres_open_group(edac->dev, xgene_edac_soc_add, GFP_KERNEL))
return -ENOMEM;
rc = of_address_to_resource(np, 0, &res);
if (rc < 0) {
dev_err(edac->dev, "no SoC resource address\n");
goto err_release_group;
}
dev_csr = devm_ioremap_resource(edac->dev, &res);
if (IS_ERR(dev_csr)) {
dev_err(edac->dev,
"devm_ioremap_resource failed for soc resource address\n");
rc = PTR_ERR(dev_csr);
goto err_release_group;
}
edac_idx = edac_device_alloc_index();
edac_dev = edac_device_alloc_ctl_info(sizeof(*ctx),
"SOC", 1, "SOC", 1, 2, NULL, 0,
edac_idx);
if (!edac_dev) {
rc = -ENOMEM;
goto err_release_group;
}
ctx = edac_dev->pvt_info;
ctx->dev_csr = dev_csr;
ctx->name = "xgene_soc_err";
ctx->edac_idx = edac_idx;
ctx->edac = edac;
ctx->edac_dev = edac_dev;
ctx->ddev = *edac->dev;
ctx->version = version;
edac_dev->dev = &ctx->ddev;
edac_dev->ctl_name = ctx->name;
edac_dev->dev_name = ctx->name;
edac_dev->mod_name = EDAC_MOD_STR;
if (edac_op_state == EDAC_OPSTATE_POLL)
edac_dev->edac_check = xgene_edac_soc_check;
rc = edac_device_add_device(edac_dev);
if (rc > 0) {
dev_err(edac->dev, "failed edac_device_add_device()\n");
rc = -ENOMEM;
goto err_ctl_free;
}
if (edac_op_state == EDAC_OPSTATE_INT)
edac_dev->op_state = OP_RUNNING_INTERRUPT;
list_add(&ctx->next, &edac->socs);
xgene_edac_soc_hw_init(edac_dev, 1);
devres_remove_group(edac->dev, xgene_edac_soc_add);
dev_info(edac->dev, "X-Gene EDAC SoC registered\n");
return 0;
err_ctl_free:
edac_device_free_ctl_info(edac_dev);
err_release_group:
devres_release_group(edac->dev, xgene_edac_soc_add);
return rc;
}
static int xgene_edac_soc_remove(struct xgene_edac_dev_ctx *soc)
{
struct edac_device_ctl_info *edac_dev = soc->edac_dev;
xgene_edac_soc_hw_init(edac_dev, 0);
edac_device_del_device(soc->edac->dev);
edac_device_free_ctl_info(edac_dev);
return 0;
}
static irqreturn_t xgene_edac_isr(int irq, void *dev_id)
{
struct xgene_edac *ctx = dev_id;
struct xgene_edac_pmd_ctx *pmd;
struct xgene_edac_dev_ctx *node;
unsigned int pcp_hp_stat;
unsigned int pcp_lp_stat;
xgene_edac_pcp_rd(ctx, PCPHPERRINTSTS, &pcp_hp_stat);
xgene_edac_pcp_rd(ctx, PCPLPERRINTSTS, &pcp_lp_stat);
if ((MCU_UNCORR_ERR_MASK & pcp_hp_stat) ||
(MCU_CTL_ERR_MASK & pcp_hp_stat) ||
(MCU_CORR_ERR_MASK & pcp_lp_stat)) {
struct xgene_edac_mc_ctx *mcu;
list_for_each_entry(mcu, &ctx->mcus, next)
xgene_edac_mc_check(mcu->mci);
}
list_for_each_entry(pmd, &ctx->pmds, next) {
if ((PMD0_MERR_MASK << pmd->pmd) & pcp_hp_stat)
xgene_edac_pmd_check(pmd->edac_dev);
}
list_for_each_entry(node, &ctx->l3s, next)
xgene_edac_l3_check(node->edac_dev);
list_for_each_entry(node, &ctx->socs, next)
xgene_edac_soc_check(node->edac_dev);
return IRQ_HANDLED;
}
static int xgene_edac_probe(struct platform_device *pdev)
{
struct xgene_edac *edac;
struct device_node *child;
struct resource *res;
int rc;
edac = devm_kzalloc(&pdev->dev, sizeof(*edac), GFP_KERNEL);
if (!edac)
return -ENOMEM;
edac->dev = &pdev->dev;
platform_set_drvdata(pdev, edac);
INIT_LIST_HEAD(&edac->mcus);
INIT_LIST_HEAD(&edac->pmds);
INIT_LIST_HEAD(&edac->l3s);
INIT_LIST_HEAD(&edac->socs);
spin_lock_init(&edac->lock);
mutex_init(&edac->mc_lock);
edac->csw_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"regmap-csw");
if (IS_ERR(edac->csw_map)) {
dev_err(edac->dev, "unable to get syscon regmap csw\n");
rc = PTR_ERR(edac->csw_map);
goto out_err;
}
edac->mcba_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"regmap-mcba");
if (IS_ERR(edac->mcba_map)) {
dev_err(edac->dev, "unable to get syscon regmap mcba\n");
rc = PTR_ERR(edac->mcba_map);
goto out_err;
}
edac->mcbb_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"regmap-mcbb");
if (IS_ERR(edac->mcbb_map)) {
dev_err(edac->dev, "unable to get syscon regmap mcbb\n");
rc = PTR_ERR(edac->mcbb_map);
goto out_err;
}
edac->efuse_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"regmap-efuse");
if (IS_ERR(edac->efuse_map)) {
dev_err(edac->dev, "unable to get syscon regmap efuse\n");
rc = PTR_ERR(edac->efuse_map);
goto out_err;
}
/*
* NOTE: The register bus resource is optional for compatibility
* reason.
*/
edac->rb_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"regmap-rb");
if (IS_ERR(edac->rb_map)) {
dev_warn(edac->dev, "missing syscon regmap rb\n");
edac->rb_map = NULL;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
edac->pcp_csr = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(edac->pcp_csr)) {
dev_err(&pdev->dev, "no PCP resource address\n");
rc = PTR_ERR(edac->pcp_csr);
goto out_err;
}
if (edac_op_state == EDAC_OPSTATE_INT) {
int irq;
int i;
for (i = 0; i < 3; i++) {
irq = platform_get_irq_optional(pdev, i);
if (irq < 0) {
dev_err(&pdev->dev, "No IRQ resource\n");
rc = irq;
goto out_err;
}
rc = devm_request_irq(&pdev->dev, irq,
xgene_edac_isr, IRQF_SHARED,
dev_name(&pdev->dev), edac);
if (rc) {
dev_err(&pdev->dev,
"Could not request IRQ %d\n", irq);
goto out_err;
}
}
}
edac->dfs = edac_debugfs_create_dir(pdev->dev.kobj.name);
for_each_child_of_node(pdev->dev.of_node, child) {
if (!of_device_is_available(child))
continue;
if (of_device_is_compatible(child, "apm,xgene-edac-mc"))
xgene_edac_mc_add(edac, child);
if (of_device_is_compatible(child, "apm,xgene-edac-pmd"))
xgene_edac_pmd_add(edac, child, 1);
if (of_device_is_compatible(child, "apm,xgene-edac-pmd-v2"))
xgene_edac_pmd_add(edac, child, 2);
if (of_device_is_compatible(child, "apm,xgene-edac-l3"))
xgene_edac_l3_add(edac, child, 1);
if (of_device_is_compatible(child, "apm,xgene-edac-l3-v2"))
xgene_edac_l3_add(edac, child, 2);
if (of_device_is_compatible(child, "apm,xgene-edac-soc"))
xgene_edac_soc_add(edac, child, 0);
if (of_device_is_compatible(child, "apm,xgene-edac-soc-v1"))
xgene_edac_soc_add(edac, child, 1);
}
return 0;
out_err:
return rc;
}
static void xgene_edac_remove(struct platform_device *pdev)
{
struct xgene_edac *edac = dev_get_drvdata(&pdev->dev);
struct xgene_edac_mc_ctx *mcu;
struct xgene_edac_mc_ctx *temp_mcu;
struct xgene_edac_pmd_ctx *pmd;
struct xgene_edac_pmd_ctx *temp_pmd;
struct xgene_edac_dev_ctx *node;
struct xgene_edac_dev_ctx *temp_node;
list_for_each_entry_safe(mcu, temp_mcu, &edac->mcus, next)
xgene_edac_mc_remove(mcu);
list_for_each_entry_safe(pmd, temp_pmd, &edac->pmds, next)
xgene_edac_pmd_remove(pmd);
list_for_each_entry_safe(node, temp_node, &edac->l3s, next)
xgene_edac_l3_remove(node);
list_for_each_entry_safe(node, temp_node, &edac->socs, next)
xgene_edac_soc_remove(node);
}
static const struct of_device_id xgene_edac_of_match[] = {
{ .compatible = "apm,xgene-edac" },
{},
};
MODULE_DEVICE_TABLE(of, xgene_edac_of_match);
static struct platform_driver xgene_edac_driver = {
.probe = xgene_edac_probe,
.remove_new = xgene_edac_remove,
.driver = {
.name = "xgene-edac",
.of_match_table = xgene_edac_of_match,
},
};
static int __init xgene_edac_init(void)
{
int rc;
if (ghes_get_devices())
return -EBUSY;
/* Make sure error reporting method is sane */
switch (edac_op_state) {
case EDAC_OPSTATE_POLL:
case EDAC_OPSTATE_INT:
break;
default:
edac_op_state = EDAC_OPSTATE_INT;
break;
}
rc = platform_driver_register(&xgene_edac_driver);
if (rc) {
edac_printk(KERN_ERR, EDAC_MOD_STR,
"EDAC fails to register\n");
goto reg_failed;
}
return 0;
reg_failed:
return rc;
}
module_init(xgene_edac_init);
static void __exit xgene_edac_exit(void)
{
platform_driver_unregister(&xgene_edac_driver);
}
module_exit(xgene_edac_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Feng Kan <fkan@apm.com>");
MODULE_DESCRIPTION("APM X-Gene EDAC driver");
module_param(edac_op_state, int, 0444);
MODULE_PARM_DESC(edac_op_state,
"EDAC error reporting state: 0=Poll, 2=Interrupt");
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