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EDAC/rockchip: support ddr ecc poison

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Change-Id: If3746dee41d2717f3c3ce9e3caa5c53ac9d8ef84
Signed-off-by: Zhihuan He <huan.he@rock-chips.com>
This commit is contained in:
Zhihuan He 2024-05-28 11:48:13 +08:00 • committed by Tao Huang
parent f5432bfa9d
commit 43675f80cc
2 changed files with 107 additions and 0 deletions
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106
drivers/edac/rockchip_edac.c
View file

@ -5,8 +5,10 @@
#include <linux/edac.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/rockchip/rockchip_sip.h>
#include <soc/rockchip/rockchip_dmc.h>
#include <soc/rockchip/rockchip_sip.h>
#include "edac_module.h"
@ -42,6 +44,18 @@
#define ECC_UNCORR_BANK_MASK (0x7)
#define ECC_UNCORR_COL_MASK (0xfff)
#define DDR_ECC_CE_DATA_POISON (1)
#define DDR_ECC_UE_DATA_POISON (0)
#define DDR_ECC_POISON_EN (1)
#define DDR_ECC_POISON_DIS (0)
/* [15:8]: high version + [7:0]: low version */
#define DDR_ECC_CFG_VER (0x100)
#define DDR_ECC_CFG_VER_V101 (0x101)
#define DDR_ECC_TAG_KERNEL (0x5588eedd)
/**
* struct ddr_ecc_error_info - DDR ECC error log information
* @err_cnt: error count
@ -74,6 +88,24 @@ struct ddr_ecc_status {
struct ddr_ecc_error_info ueinfo;
};
/**
* struct rk_ddr_ecc_cfg - RK DDR ECC config
* @ecc_cfg_ver: version for DDR ECC config
* @ecc_poiso_en: enable ecc data poisoning
* @ecc_poison_mode: corrected/uncorrected data poisoning mode
* @ecc_poison_addr: DDR ECC Data Poisoning Address
*/
struct rk_ddr_ecc_cfg {
u32 ecc_cfg_ver;
u32 ecc_poison_en;
u32 ecc_poison_mode;
u64 ecc_poison_addr;
u64 ce_addr;
u64 ue_addr;
struct ddr_ecc_error_info poison;
u32 kernel_tag;
};
/**
* struct rk_edac_priv - RK DDR memory controller private instance data
* @name: EDAC name
@ -93,6 +125,9 @@ struct rk_edac_priv {
};
static struct ddr_ecc_status *ddr_edac_info;
static struct rk_ddr_ecc_cfg *ddr_edac_cfg;
static char edac_poison_mode[4] = "ce";
static inline void opstate_init_int(void)
{
@ -141,6 +176,37 @@ static void rockchip_edac_handle_ue_error(struct mem_ctl_info *mci,
}
}
static int rockchip_ddr_ecc_poison(struct rk_ddr_ecc_cfg *cfg)
{
struct arm_smccc_res res;
cfg->ecc_cfg_ver = DDR_ECC_CFG_VER_V101;
cfg->kernel_tag = DDR_ECC_TAG_KERNEL;
cfg->ecc_poison_en = DDR_ECC_POISON_EN;
res = sip_smc_dram(SHARE_PAGE_TYPE_DDRECC, 0,
ROCKCHIP_SIP_CONFIG_DRAM_ECC_POISON);
if ((res.a0) || (res.a1)) {
edac_printk(KERN_ERR, EDAC_MC,
"ROCKCHIP_SIP_CONFIG_DRAM_ECC_POISON not support: 0x%lx-0x%lx\n",
res.a0, res.a1);
return -ENXIO;
}
/* disable ddr ecc poison */
cfg->ecc_poison_en = DDR_ECC_POISON_DIS;
res = sip_smc_dram(SHARE_PAGE_TYPE_DDRECC, 0,
ROCKCHIP_SIP_CONFIG_DRAM_ECC_POISON);
if ((res.a0) || (res.a1)) {
edac_printk(KERN_ERR, EDAC_MC,
"ROCKCHIP_SIP_CONFIG_DRAM_ECC_POISON not support: 0x%lx-0x%lx\n",
res.a0, res.a1);
return -ENXIO;
}
return 0;
}
static int rockchip_edac_get_error_info(struct mem_ctl_info *mci)
{
struct arm_smccc_res res;
@ -205,6 +271,36 @@ static irqreturn_t rockchip_edac_mc_ue_isr(int irq, void *dev_id)
return IRQ_HANDLED;
}
static int rockchip_edac_trigger(const char *val, const struct kernel_param *kp)
{
int ret = 0;
unsigned long value, i;
if (ddr_edac_cfg == NULL)
return -1;
if (kstrtoul(val, 0, &value) < 0)
return 0;
if (!strncmp(edac_poison_mode, "ce", 2)) {
ddr_edac_cfg->ecc_poison_mode = DDR_ECC_CE_DATA_POISON;
} else if (!strncmp(edac_poison_mode, "ue", 2)) {
ddr_edac_cfg->ecc_poison_mode = DDR_ECC_UE_DATA_POISON;
} else {
ddr_edac_cfg->ecc_poison_mode = DDR_ECC_CE_DATA_POISON;
edac_printk(KERN_WARNING, EDAC_MC,
"unknown poison mode, used default mode: ce!\n");
}
for (i = 0; i < value; i++) {
rockchip_dmcfreq_lock();
ret = rockchip_ddr_ecc_poison(ddr_edac_cfg);
rockchip_dmcfreq_unlock();
}
return ret;
}
static int rockchip_edac_mc_init(struct mem_ctl_info *mci,
struct platform_device *pdev)
{
@ -236,6 +332,9 @@ static int rockchip_edac_mc_init(struct mem_ctl_info *mci,
ddr_edac_info = (struct ddr_ecc_status *)res.a1;
memset(ddr_edac_info, 0, sizeof(struct ddr_ecc_status));
ddr_edac_cfg = (struct rk_ddr_ecc_cfg *)(res.a1 + (4096 / 4));
memset(ddr_edac_cfg, 0, sizeof(struct rk_ddr_ecc_cfg));
ret = rockchip_edac_get_error_info(mci);
if (ret)
return ret;
@ -353,6 +452,13 @@ static struct platform_driver rockchip_edac_driver = {
};
module_platform_driver(rockchip_edac_driver);
module_param_string(edac_poison_mode, edac_poison_mode, sizeof(edac_poison_mode), 0664);
MODULE_PARM_DESC(edac_poison_mode, "RK EDAC DDR ECC poison mode(ce or ue).");
module_param_call(rockchip_edac_trigger, rockchip_edac_trigger, NULL, NULL, 0664);
MODULE_PARM_DESC(rockchip_edac_trigger,
"RK EDAC DDR ECC triggered by writing the number of errors(greater than 0).");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("He Zhihuan <huan.he@rock-chips.com>\n");
MODULE_DESCRIPTION("ROCKCHIP EDAC kernel module");

1
include/soc/rockchip/rockchip_sip.h
View file

@ -24,5 +24,6 @@
#define ROCKCHIP_SIP_CONFIG_DRAM_GET_FREQ_INFO 0x0e
#define ROCKCHIP_SIP_CONFIG_DRAM_ADDRMAP_GET 0x10
#define ROCKCHIP_SIP_CONFIG_DRAM_GET_STALL_TIME 0x11
#define ROCKCHIP_SIP_CONFIG_DRAM_ECC_POISON 0x12
#endif