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-rw-r--r--drivers/edac/Kconfig9
-rw-r--r--drivers/edac/Makefile1
-rw-r--r--drivers/edac/amd64_edac.c34
-rw-r--r--drivers/edac/amd76x_edac.c1
-rw-r--r--drivers/edac/e752x_edac.c1
-rw-r--r--drivers/edac/e7xxx_edac.c1
-rw-r--r--drivers/edac/edac_device.h11
-rw-r--r--drivers/edac/edac_mc.c4
-rw-r--r--drivers/edac/i10nm_base.c39
-rw-r--r--drivers/edac/i3000_edac.c1
-rw-r--r--drivers/edac/i3200_edac.c1
-rw-r--r--drivers/edac/i5000_edac.c2
-rw-r--r--drivers/edac/i5400_edac.c2
-rw-r--r--drivers/edac/i82443bxgx_edac.c1
-rw-r--r--drivers/edac/i82860_edac.c1
-rw-r--r--drivers/edac/i82875p_edac.c1
-rw-r--r--drivers/edac/i82975x_edac.c1
-rw-r--r--drivers/edac/ie31200_edac.c1
-rw-r--r--drivers/edac/igen6_edac.c977
-rw-r--r--drivers/edac/r82600_edac.c1
-rw-r--r--drivers/edac/skx_base.c6
-rw-r--r--drivers/edac/skx_common.c23
-rw-r--r--drivers/edac/skx_common.h16
-rw-r--r--drivers/edac/synopsys_edac.c3
-rw-r--r--drivers/edac/x38_edac.c1
25 files changed, 1076 insertions, 63 deletions
diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index 2864a32c7d17..81c42664f21b 100644
--- a/drivers/edac/Kconfig
+++ b/drivers/edac/Kconfig
@@ -269,6 +269,15 @@ config EDAC_PND2
first used on the Apollo Lake platform and Denverton
micro-server but may appear on others in the future.
+config EDAC_IGEN6
+ tristate "Intel client SoC Integrated MC"
+ depends on PCI && X86_64 && PCI_MMCONFIG && ARCH_HAVE_NMI_SAFE_CMPXCHG
+ help
+ Support for error detection and correction on the Intel
+ client SoC Integrated Memory Controller using In-Band ECC IP.
+ This In-Band ECC is first used on the Elkhart Lake SoC but
+ may appear on others in the future.
+
config EDAC_MPC85XX
bool "Freescale MPC83xx / MPC85xx"
depends on FSL_SOC && EDAC=y
diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile
index 28edee9dca66..464d3d8d850a 100644
--- a/drivers/edac/Makefile
+++ b/drivers/edac/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_EDAC_I7300) += i7300_edac.o
obj-$(CONFIG_EDAC_I7CORE) += i7core_edac.o
obj-$(CONFIG_EDAC_SBRIDGE) += sb_edac.o
obj-$(CONFIG_EDAC_PND2) += pnd2_edac.o
+obj-$(CONFIG_EDAC_IGEN6) += igen6_edac.o
obj-$(CONFIG_EDAC_E7XXX) += e7xxx_edac.o
obj-$(CONFIG_EDAC_E752X) += e752x_edac.o
obj-$(CONFIG_EDAC_I82443BXGX) += i82443bxgx_edac.o
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 1362274d840b..15b0d39d2845 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -18,6 +18,9 @@ static struct amd64_family_type *fam_type;
/* Per-node stuff */
static struct ecc_settings **ecc_stngs;
+/* Device for the PCI component */
+static struct device *pci_ctl_dev;
+
/*
* Valid scrub rates for the K8 hardware memory scrubber. We map the scrubbing
* bandwidth to a valid bit pattern. The 'set' operation finds the 'matching-
@@ -2461,14 +2464,11 @@ static int map_err_sym_to_channel(int err_sym, int sym_size)
case 0x20:
case 0x21:
return 0;
- break;
case 0x22:
case 0x23:
return 1;
- break;
default:
return err_sym >> 4;
- break;
}
/* x8 symbols */
else
@@ -2478,17 +2478,12 @@ static int map_err_sym_to_channel(int err_sym, int sym_size)
WARN(1, KERN_ERR "Invalid error symbol: 0x%x\n",
err_sym);
return -1;
- break;
-
case 0x11:
return 0;
- break;
case 0x12:
return 1;
- break;
default:
return err_sym >> 3;
- break;
}
return -1;
}
@@ -2683,6 +2678,9 @@ reserve_mc_sibling_devs(struct amd64_pvt *pvt, u16 pci_id1, u16 pci_id2)
return -ENODEV;
}
+ if (!pci_ctl_dev)
+ pci_ctl_dev = &pvt->F0->dev;
+
edac_dbg(1, "F0: %s\n", pci_name(pvt->F0));
edac_dbg(1, "F3: %s\n", pci_name(pvt->F3));
edac_dbg(1, "F6: %s\n", pci_name(pvt->F6));
@@ -2707,6 +2705,9 @@ reserve_mc_sibling_devs(struct amd64_pvt *pvt, u16 pci_id1, u16 pci_id2)
return -ENODEV;
}
+ if (!pci_ctl_dev)
+ pci_ctl_dev = &pvt->F2->dev;
+
edac_dbg(1, "F1: %s\n", pci_name(pvt->F1));
edac_dbg(1, "F2: %s\n", pci_name(pvt->F2));
edac_dbg(1, "F3: %s\n", pci_name(pvt->F3));
@@ -3623,21 +3624,10 @@ static void remove_one_instance(unsigned int nid)
static void setup_pci_device(void)
{
- struct mem_ctl_info *mci;
- struct amd64_pvt *pvt;
-
if (pci_ctl)
return;
- mci = edac_mc_find(0);
- if (!mci)
- return;
-
- pvt = mci->pvt_info;
- if (pvt->umc)
- pci_ctl = edac_pci_create_generic_ctl(&pvt->F0->dev, EDAC_MOD_STR);
- else
- pci_ctl = edac_pci_create_generic_ctl(&pvt->F2->dev, EDAC_MOD_STR);
+ pci_ctl = edac_pci_create_generic_ctl(pci_ctl_dev, EDAC_MOD_STR);
if (!pci_ctl) {
pr_warn("%s(): Unable to create PCI control\n", __func__);
pr_warn("%s(): PCI error report via EDAC not set\n", __func__);
@@ -3716,6 +3706,8 @@ static int __init amd64_edac_init(void)
return 0;
err_pci:
+ pci_ctl_dev = NULL;
+
msrs_free(msrs);
msrs = NULL;
@@ -3745,6 +3737,8 @@ static void __exit amd64_edac_exit(void)
kfree(ecc_stngs);
ecc_stngs = NULL;
+ pci_ctl_dev = NULL;
+
msrs_free(msrs);
msrs = NULL;
}
diff --git a/drivers/edac/amd76x_edac.c b/drivers/edac/amd76x_edac.c
index 9c6e326b4c14..2a49f68a7cf9 100644
--- a/drivers/edac/amd76x_edac.c
+++ b/drivers/edac/amd76x_edac.c
@@ -179,7 +179,6 @@ static int amd76x_process_error_info(struct mem_ctl_info *mci,
static void amd76x_check(struct mem_ctl_info *mci)
{
struct amd76x_error_info info;
- edac_dbg(3, "\n");
amd76x_get_error_info(mci, &info);
amd76x_process_error_info(mci, &info, 1);
}
diff --git a/drivers/edac/e752x_edac.c b/drivers/edac/e752x_edac.c
index 313d08018166..ac7c9b42d4c7 100644
--- a/drivers/edac/e752x_edac.c
+++ b/drivers/edac/e752x_edac.c
@@ -980,7 +980,6 @@ static void e752x_check(struct mem_ctl_info *mci)
{
struct e752x_error_info info;
- edac_dbg(3, "\n");
e752x_get_error_info(mci, &info);
e752x_process_error_info(mci, &info, 1);
}
diff --git a/drivers/edac/e7xxx_edac.c b/drivers/edac/e7xxx_edac.c
index 75d7ce62b3be..497e710fca3d 100644
--- a/drivers/edac/e7xxx_edac.c
+++ b/drivers/edac/e7xxx_edac.c
@@ -333,7 +333,6 @@ static void e7xxx_check(struct mem_ctl_info *mci)
{
struct e7xxx_error_info info;
- edac_dbg(3, "\n");
e7xxx_get_error_info(mci, &info);
e7xxx_process_error_info(mci, &info, 1);
}
diff --git a/drivers/edac/edac_device.h b/drivers/edac/edac_device.h
index c4c0e0bdce14..fc2d2c218064 100644
--- a/drivers/edac/edac_device.h
+++ b/drivers/edac/edac_device.h
@@ -258,7 +258,7 @@ extern struct edac_device_ctl_info *edac_device_alloc_ctl_info(
extern void edac_device_free_ctl_info(struct edac_device_ctl_info *ctl_info);
/**
- * edac_device_add_device: Insert the 'edac_dev' structure into the
+ * edac_device_add_device - Insert the 'edac_dev' structure into the
* edac_device global list and create sysfs entries associated with
* edac_device structure.
*
@@ -271,9 +271,8 @@ extern void edac_device_free_ctl_info(struct edac_device_ctl_info *ctl_info);
extern int edac_device_add_device(struct edac_device_ctl_info *edac_dev);
/**
- * edac_device_del_device:
- * Remove sysfs entries for specified edac_device structure and
- * then remove edac_device structure from global list
+ * edac_device_del_device - Remove sysfs entries for specified edac_device
+ * structure and then remove edac_device structure from global list
*
* @dev:
* Pointer to struct &device representing the edac device
@@ -286,7 +285,7 @@ extern int edac_device_add_device(struct edac_device_ctl_info *edac_dev);
extern struct edac_device_ctl_info *edac_device_del_device(struct device *dev);
/**
- * Log correctable errors.
+ * edac_device_handle_ce_count - Log correctable errors.
*
* @edac_dev: pointer to struct &edac_device_ctl_info
* @inst_nr: number of the instance where the CE error happened
@@ -299,7 +298,7 @@ void edac_device_handle_ce_count(struct edac_device_ctl_info *edac_dev,
const char *msg);
/**
- * Log uncorrectable errors.
+ * edac_device_handle_ue_count - Log uncorrectable errors.
*
* @edac_dev: pointer to struct &edac_device_ctl_info
* @inst_nr: number of the instance where the CE error happened
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index 01ff71f7b645..f6d462d0be2d 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -158,10 +158,14 @@ const char * const edac_mem_types[] = {
[MEM_DDR3] = "Unbuffered-DDR3",
[MEM_RDDR3] = "Registered-DDR3",
[MEM_LRDDR3] = "Load-Reduced-DDR3-RAM",
+ [MEM_LPDDR3] = "Low-Power-DDR3-RAM",
[MEM_DDR4] = "Unbuffered-DDR4",
[MEM_RDDR4] = "Registered-DDR4",
+ [MEM_LPDDR4] = "Low-Power-DDR4-RAM",
[MEM_LRDDR4] = "Load-Reduced-DDR4-RAM",
+ [MEM_DDR5] = "Unbuffered-DDR5",
[MEM_NVDIMM] = "Non-volatile-RAM",
+ [MEM_WIO2] = "Wide-IO-2",
};
EXPORT_SYMBOL_GPL(edac_mem_types);
diff --git a/drivers/edac/i10nm_base.c b/drivers/edac/i10nm_base.c
index c8d11da85bec..238a4ad1e526 100644
--- a/drivers/edac/i10nm_base.c
+++ b/drivers/edac/i10nm_base.c
@@ -6,27 +6,32 @@
*/
#include <linux/kernel.h>
+#include <linux/io.h>
#include <asm/cpu_device_id.h>
#include <asm/intel-family.h>
#include <asm/mce.h>
#include "edac_module.h"
#include "skx_common.h"
-#define I10NM_REVISION "v0.0.3"
+#define I10NM_REVISION "v0.0.4"
#define EDAC_MOD_STR "i10nm_edac"
/* Debug macros */
#define i10nm_printk(level, fmt, arg...) \
edac_printk(level, "i10nm", fmt, ##arg)
-#define I10NM_GET_SCK_BAR(d, reg) \
+#define I10NM_GET_SCK_BAR(d, reg) \
pci_read_config_dword((d)->uracu, 0xd0, &(reg))
#define I10NM_GET_IMC_BAR(d, i, reg) \
pci_read_config_dword((d)->uracu, 0xd8 + (i) * 4, &(reg))
#define I10NM_GET_DIMMMTR(m, i, j) \
- (*(u32 *)((m)->mbase + 0x2080c + (i) * 0x4000 + (j) * 4))
+ readl((m)->mbase + 0x2080c + (i) * (m)->chan_mmio_sz + (j) * 4)
#define I10NM_GET_MCDDRTCFG(m, i, j) \
- (*(u32 *)((m)->mbase + 0x20970 + (i) * 0x4000 + (j) * 4))
+ readl((m)->mbase + 0x20970 + (i) * (m)->chan_mmio_sz + (j) * 4)
+#define I10NM_GET_MCMTR(m, i) \
+ readl((m)->mbase + 0x20ef8 + (i) * (m)->chan_mmio_sz)
+#define I10NM_GET_AMAP(m, i) \
+ readl((m)->mbase + 0x20814 + (i) * (m)->chan_mmio_sz)
#define I10NM_GET_SCK_MMIO_BASE(reg) (GET_BITFIELD(reg, 0, 28) << 23)
#define I10NM_GET_IMC_MMIO_OFFSET(reg) (GET_BITFIELD(reg, 0, 10) << 12)
@@ -126,12 +131,22 @@ static struct res_config i10nm_cfg0 = {
.type = I10NM,
.decs_did = 0x3452,
.busno_cfg_offset = 0xcc,
+ .ddr_chan_mmio_sz = 0x4000,
};
static struct res_config i10nm_cfg1 = {
.type = I10NM,
.decs_did = 0x3452,
.busno_cfg_offset = 0xd0,
+ .ddr_chan_mmio_sz = 0x4000,
+};
+
+static struct res_config spr_cfg = {
+ .type = SPR,
+ .decs_did = 0x3252,
+ .busno_cfg_offset = 0xd0,
+ .ddr_chan_mmio_sz = 0x8000,
+ .support_ddr5 = true,
};
static const struct x86_cpu_id i10nm_cpuids[] = {
@@ -140,6 +155,7 @@ static const struct x86_cpu_id i10nm_cpuids[] = {
X86_MATCH_INTEL_FAM6_MODEL_STEPPINGS(ICELAKE_X, X86_STEPPINGS(0x0, 0x3), &i10nm_cfg0),
X86_MATCH_INTEL_FAM6_MODEL_STEPPINGS(ICELAKE_X, X86_STEPPINGS(0x4, 0xf), &i10nm_cfg1),
X86_MATCH_INTEL_FAM6_MODEL_STEPPINGS(ICELAKE_D, X86_STEPPINGS(0x0, 0xf), &i10nm_cfg1),
+ X86_MATCH_INTEL_FAM6_MODEL_STEPPINGS(SAPPHIRERAPIDS_X, X86_STEPPINGS(0x0, 0xf), &spr_cfg),
{}
};
MODULE_DEVICE_TABLE(x86cpu, i10nm_cpuids);
@@ -148,18 +164,19 @@ static bool i10nm_check_ecc(struct skx_imc *imc, int chan)
{
u32 mcmtr;
- mcmtr = *(u32 *)(imc->mbase + 0x20ef8 + chan * 0x4000);
+ mcmtr = I10NM_GET_MCMTR(imc, chan);
edac_dbg(1, "ch%d mcmtr reg %x\n", chan, mcmtr);
return !!GET_BITFIELD(mcmtr, 2, 2);
}
-static int i10nm_get_dimm_config(struct mem_ctl_info *mci)
+static int i10nm_get_dimm_config(struct mem_ctl_info *mci,
+ struct res_config *cfg)
{
struct skx_pvt *pvt = mci->pvt_info;
struct skx_imc *imc = pvt->imc;
+ u32 mtr, amap, mcddrtcfg;
struct dimm_info *dimm;
- u32 mtr, mcddrtcfg;
int i, j, ndimms;
for (i = 0; i < I10NM_NUM_CHANNELS; i++) {
@@ -167,6 +184,7 @@ static int i10nm_get_dimm_config(struct mem_ctl_info *mci)
continue;
ndimms = 0;
+ amap = I10NM_GET_AMAP(imc, i);
for (j = 0; j < I10NM_NUM_DIMMS; j++) {
dimm = edac_get_dimm(mci, i, j, 0);
mtr = I10NM_GET_DIMMMTR(imc, i, j);
@@ -175,8 +193,8 @@ static int i10nm_get_dimm_config(struct mem_ctl_info *mci)
mtr, mcddrtcfg, imc->mc, i, j);
if (IS_DIMM_PRESENT(mtr))
- ndimms += skx_get_dimm_info(mtr, 0, 0, dimm,
- imc, i, j);
+ ndimms += skx_get_dimm_info(mtr, 0, amap, dimm,
+ imc, i, j, cfg);
else if (IS_NVDIMM_PRESENT(mcddrtcfg, j))
ndimms += skx_get_nvdimm_info(dimm, imc, i, j,
EDAC_MOD_STR);
@@ -300,10 +318,11 @@ static int __init i10nm_init(void)
d->imc[i].lmc = i;
d->imc[i].src_id = src_id;
d->imc[i].node_id = node_id;
+ d->imc[i].chan_mmio_sz = cfg->ddr_chan_mmio_sz;
rc = skx_register_mci(&d->imc[i], d->imc[i].mdev,
"Intel_10nm Socket", EDAC_MOD_STR,
- i10nm_get_dimm_config);
+ i10nm_get_dimm_config, cfg);
if (rc < 0)
goto fail;
}
diff --git a/drivers/edac/i3000_edac.c b/drivers/edac/i3000_edac.c
index 5c1eea96230c..9065bc4386ff 100644
--- a/drivers/edac/i3000_edac.c
+++ b/drivers/edac/i3000_edac.c
@@ -273,7 +273,6 @@ static void i3000_check(struct mem_ctl_info *mci)
{
struct i3000_error_info info;
- edac_dbg(1, "MC%d\n", mci->mc_idx);
i3000_get_error_info(mci, &info);
i3000_process_error_info(mci, &info, 1);
}
diff --git a/drivers/edac/i3200_edac.c b/drivers/edac/i3200_edac.c
index a8988db6d423..afccdebf5ac1 100644
--- a/drivers/edac/i3200_edac.c
+++ b/drivers/edac/i3200_edac.c
@@ -253,7 +253,6 @@ static void i3200_check(struct mem_ctl_info *mci)
{
struct i3200_error_info info;
- edac_dbg(1, "MC%d\n", mci->mc_idx);
i3200_get_and_clear_error_info(mci, &info);
i3200_process_error_info(mci, &info);
}
diff --git a/drivers/edac/i5000_edac.c b/drivers/edac/i5000_edac.c
index 1a6f69c859ab..ba46057d4220 100644
--- a/drivers/edac/i5000_edac.c
+++ b/drivers/edac/i5000_edac.c
@@ -765,7 +765,7 @@ static void i5000_clear_error(struct mem_ctl_info *mci)
static void i5000_check_error(struct mem_ctl_info *mci)
{
struct i5000_error_info info;
- edac_dbg(4, "MC%d\n", mci->mc_idx);
+
i5000_get_error_info(mci, &info);
i5000_process_error_info(mci, &info, 1);
}
diff --git a/drivers/edac/i5400_edac.c b/drivers/edac/i5400_edac.c
index 92d63eb533ae..f76624ee82ef 100644
--- a/drivers/edac/i5400_edac.c
+++ b/drivers/edac/i5400_edac.c
@@ -686,7 +686,7 @@ static void i5400_clear_error(struct mem_ctl_info *mci)
static void i5400_check_error(struct mem_ctl_info *mci)
{
struct i5400_error_info info;
- edac_dbg(4, "MC%d\n", mci->mc_idx);
+
i5400_get_error_info(mci, &info);
i5400_process_error_info(mci, &info);
}
diff --git a/drivers/edac/i82443bxgx_edac.c b/drivers/edac/i82443bxgx_edac.c
index a2ca929e2168..933dcf3cfdff 100644
--- a/drivers/edac/i82443bxgx_edac.c
+++ b/drivers/edac/i82443bxgx_edac.c
@@ -176,7 +176,6 @@ static void i82443bxgx_edacmc_check(struct mem_ctl_info *mci)
{
struct i82443bxgx_edacmc_error_info info;
- edac_dbg(1, "MC%d\n", mci->mc_idx);
i82443bxgx_edacmc_get_error_info(mci, &info);
i82443bxgx_edacmc_process_error_info(mci, &info, 1);
}
diff --git a/drivers/edac/i82860_edac.c b/drivers/edac/i82860_edac.c
index 3e3a80ffb322..fbec90d00f1e 100644
--- a/drivers/edac/i82860_edac.c
+++ b/drivers/edac/i82860_edac.c
@@ -135,7 +135,6 @@ static void i82860_check(struct mem_ctl_info *mci)
{
struct i82860_error_info info;
- edac_dbg(1, "MC%d\n", mci->mc_idx);
i82860_get_error_info(mci, &info);
i82860_process_error_info(mci, &info, 1);
}
diff --git a/drivers/edac/i82875p_edac.c b/drivers/edac/i82875p_edac.c
index ceac925af38c..553880b9fc12 100644
--- a/drivers/edac/i82875p_edac.c
+++ b/drivers/edac/i82875p_edac.c
@@ -262,7 +262,6 @@ static void i82875p_check(struct mem_ctl_info *mci)
{
struct i82875p_error_info info;
- edac_dbg(1, "MC%d\n", mci->mc_idx);
i82875p_get_error_info(mci, &info);
i82875p_process_error_info(mci, &info, 1);
}
diff --git a/drivers/edac/i82975x_edac.c b/drivers/edac/i82975x_edac.c
index 6be99e0d850d..d99f005832cf 100644
--- a/drivers/edac/i82975x_edac.c
+++ b/drivers/edac/i82975x_edac.c
@@ -330,7 +330,6 @@ static void i82975x_check(struct mem_ctl_info *mci)
{
struct i82975x_error_info info;
- edac_dbg(1, "MC%d\n", mci->mc_idx);
i82975x_get_error_info(mci, &info);
i82975x_process_error_info(mci, &info, 1);
}
diff --git a/drivers/edac/ie31200_edac.c b/drivers/edac/ie31200_edac.c
index c47963240b65..9a9ff5ad611a 100644
--- a/drivers/edac/ie31200_edac.c
+++ b/drivers/edac/ie31200_edac.c
@@ -333,7 +333,6 @@ static void ie31200_check(struct mem_ctl_info *mci)
{
struct ie31200_error_info info;
- edac_dbg(1, "MC%d\n", mci->mc_idx);
ie31200_get_and_clear_error_info(mci, &info);
ie31200_process_error_info(mci, &info);
}
diff --git a/drivers/edac/igen6_edac.c b/drivers/edac/igen6_edac.c
new file mode 100644
index 000000000000..6be9986fc6bd
--- /dev/null
+++ b/drivers/edac/igen6_edac.c
@@ -0,0 +1,977 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for Intel client SoC with integrated memory controller using IBECC
+ *
+ * Copyright (C) 2020 Intel Corporation
+ *
+ * The In-Band ECC (IBECC) IP provides ECC protection to all or specific
+ * regions of the physical memory space. It's used for memory controllers
+ * that don't support the out-of-band ECC which often needs an additional
+ * storage device to each channel for storing ECC data.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/irq_work.h>
+#include <linux/llist.h>
+#include <linux/genalloc.h>
+#include <linux/edac.h>
+#include <linux/bits.h>
+#include <linux/io.h>
+#include <asm/mach_traps.h>
+#include <asm/nmi.h>
+
+#include "edac_mc.h"
+#include "edac_module.h"
+
+#define IGEN6_REVISION "v2.4"
+
+#define EDAC_MOD_STR "igen6_edac"
+#define IGEN6_NMI_NAME "igen6_ibecc"
+
+/* Debug macros */
+#define igen6_printk(level, fmt, arg...) \
+ edac_printk(level, "igen6", fmt, ##arg)
+
+#define igen6_mc_printk(mci, level, fmt, arg...) \
+ edac_mc_chipset_printk(mci, level, "igen6", fmt, ##arg)
+
+#define GET_BITFIELD(v, lo, hi) (((v) & GENMASK_ULL(hi, lo)) >> (lo))
+
+#define NUM_IMC 1 /* Max memory controllers */
+#define NUM_CHANNELS 2 /* Max channels */
+#define NUM_DIMMS 2 /* Max DIMMs per channel */
+
+#define _4GB BIT_ULL(32)
+
+/* Size of physical memory */
+#define TOM_OFFSET 0xa0
+/* Top of low usable DRAM */
+#define TOLUD_OFFSET 0xbc
+/* Capability register C */
+#define CAPID_C_OFFSET 0xec
+#define CAPID_C_IBECC BIT(15)
+
+/* Error Status */
+#define ERRSTS_OFFSET 0xc8
+#define ERRSTS_CE BIT_ULL(6)
+#define ERRSTS_UE BIT_ULL(7)
+
+/* Error Command */
+#define ERRCMD_OFFSET 0xca
+#define ERRCMD_CE BIT_ULL(6)
+#define ERRCMD_UE BIT_ULL(7)
+
+/* IBECC MMIO base address */
+#define IBECC_BASE (res_cfg->ibecc_base)
+#define IBECC_ACTIVATE_OFFSET IBECC_BASE
+#define IBECC_ACTIVATE_EN BIT(0)
+
+/* IBECC error log */
+#define ECC_ERROR_LOG_OFFSET (IBECC_BASE + 0x170)
+#define ECC_ERROR_LOG_CE BIT_ULL(62)
+#define ECC_ERROR_LOG_UE BIT_ULL(63)
+#define ECC_ERROR_LOG_ADDR_SHIFT 5
+#define ECC_ERROR_LOG_ADDR(v) GET_BITFIELD(v, 5, 38)
+#define ECC_ERROR_LOG_SYND(v) GET_BITFIELD(v, 46, 61)
+
+/* Host MMIO base address */
+#define MCHBAR_OFFSET 0x48
+#define MCHBAR_EN BIT_ULL(0)
+#define MCHBAR_BASE(v) (GET_BITFIELD(v, 16, 38) << 16)
+#define MCHBAR_SIZE 0x10000
+
+/* Parameters for the channel decode stage */
+#define MAD_INTER_CHANNEL_OFFSET 0x5000
+#define MAD_INTER_CHANNEL_DDR_TYPE(v) GET_BITFIELD(v, 0, 2)
+#define MAD_INTER_CHANNEL_ECHM(v) GET_BITFIELD(v, 3, 3)
+#define MAD_INTER_CHANNEL_CH_L_MAP(v) GET_BITFIELD(v, 4, 4)
+#define MAD_INTER_CHANNEL_CH_S_SIZE(v) ((u64)GET_BITFIELD(v, 12, 19) << 29)
+
+/* Parameters for DRAM decode stage */
+#define MAD_INTRA_CH0_OFFSET 0x5004
+#define MAD_INTRA_CH_DIMM_L_MAP(v) GET_BITFIELD(v, 0, 0)
+
+/* DIMM characteristics */
+#define MAD_DIMM_CH0_OFFSET 0x500c
+#define MAD_DIMM_CH_DIMM_L_SIZE(v) ((u64)GET_BITFIELD(v, 0, 6) << 29)
+#define MAD_DIMM_CH_DLW(v) GET_BITFIELD(v, 7, 8)
+#define MAD_DIMM_CH_DIMM_S_SIZE(v) ((u64)GET_BITFIELD(v, 16, 22) << 29)
+#define MAD_DIMM_CH_DSW(v) GET_BITFIELD(v, 24, 25)
+
+/* Hash for channel selection */
+#define CHANNEL_HASH_OFFSET 0X5024
+/* Hash for enhanced channel selection */
+#define CHANNEL_EHASH_OFFSET 0X5028
+#define CHANNEL_HASH_MASK(v) (GET_BITFIELD(v, 6, 19) << 6)
+#define CHANNEL_HASH_LSB_MASK_BIT(v) GET_BITFIELD(v, 24, 26)
+#define CHANNEL_HASH_MODE(v) GET_BITFIELD(v, 28, 28)
+
+static struct res_config {
+ int num_imc;
+ u32 ibecc_base;
+ bool (*ibecc_available)(struct pci_dev *pdev);
+ /* Convert error address logged in IBECC to system physical address */
+ u64 (*err_addr_to_sys_addr)(u64 eaddr);
+ /* Convert error address logged in IBECC to integrated memory controller address */
+ u64 (*err_addr_to_imc_addr)(u64 eaddr);
+} *res_cfg;
+
+struct igen6_imc {
+ int mc;
+ struct mem_ctl_info *mci;
+ struct pci_dev *pdev;
+ struct device dev;
+ void __iomem *window;
+ u64 ch_s_size;
+ int ch_l_map;
+ u64 dimm_s_size[NUM_CHANNELS];
+ u64 dimm_l_size[NUM_CHANNELS];
+ int dimm_l_map[NUM_CHANNELS];
+};
+
+static struct igen6_pvt {
+ struct igen6_imc imc[NUM_IMC];
+} *igen6_pvt;
+
+/* The top of low usable DRAM */
+static u32 igen6_tolud;
+/* The size of physical memory */
+static u64 igen6_tom;
+
+struct decoded_addr {
+ int mc;
+ u64 imc_addr;
+ u64 sys_addr;
+ int channel_idx;
+ u64 channel_addr;
+ int sub_channel_idx;
+ u64 sub_channel_addr;
+};
+
+struct ecclog_node {
+ struct llist_node llnode;
+ int mc;
+ u64 ecclog;
+};
+
+/*
+ * In the NMI handler, the driver uses the lock-less memory allocator
+ * to allocate memory to store the IBECC error logs and links the logs
+ * to the lock-less list. Delay printk() and the work of error reporting
+ * to EDAC core in a worker.
+ */
+#define ECCLOG_POOL_SIZE PAGE_SIZE
+static LLIST_HEAD(ecclog_llist);
+static struct gen_pool *ecclog_pool;
+static char ecclog_buf[ECCLOG_POOL_SIZE];
+static struct irq_work ecclog_irq_work;
+static struct work_struct ecclog_work;
+
+/* Compute die IDs for Elkhart Lake with IBECC */
+#define DID_EHL_SKU5 0x4514
+#define DID_EHL_SKU6 0x4528
+#define DID_EHL_SKU7 0x452a
+#define DID_EHL_SKU8 0x4516
+#define DID_EHL_SKU9 0x452c
+#define DID_EHL_SKU10 0x452e
+#define DID_EHL_SKU11 0x4532
+#define DID_EHL_SKU12 0x4518
+#define DID_EHL_SKU13 0x451a
+#define DID_EHL_SKU14 0x4534
+#define DID_EHL_SKU15 0x4536
+
+static bool ehl_ibecc_available(struct pci_dev *pdev)
+{
+ u32 v;
+
+ if (pci_read_config_dword(pdev, CAPID_C_OFFSET, &v))
+ return false;
+
+ return !!(CAPID_C_IBECC & v);
+}
+
+static u64 ehl_err_addr_to_sys_addr(u64 eaddr)
+{
+ return eaddr;
+}
+
+static u64 ehl_err_addr_to_imc_addr(u64 eaddr)
+{
+ if (eaddr < igen6_tolud)
+ return eaddr;
+
+ if (igen6_tom <= _4GB)
+ return eaddr + igen6_tolud - _4GB;
+
+ if (eaddr < _4GB)
+ return eaddr + igen6_tolud - igen6_tom;
+
+ return eaddr;
+}
+
+static struct res_config ehl_cfg = {
+ .num_imc = 1,
+ .ibecc_base = 0xdc00,
+ .ibecc_available = ehl_ibecc_available,
+ .err_addr_to_sys_addr = ehl_err_addr_to_sys_addr,
+ .err_addr_to_imc_addr = ehl_err_addr_to_imc_addr,
+};
+
+static const struct pci_device_id igen6_pci_tbl[] = {
+ { PCI_VDEVICE(INTEL, DID_EHL_SKU5), (kernel_ulong_t)&ehl_cfg },
+ { PCI_VDEVICE(INTEL, DID_EHL_SKU6), (kernel_ulong_t)&ehl_cfg },
+ { PCI_VDEVICE(INTEL, DID_EHL_SKU7), (kernel_ulong_t)&ehl_cfg },
+ { PCI_VDEVICE(INTEL, DID_EHL_SKU8), (kernel_ulong_t)&ehl_cfg },
+ { PCI_VDEVICE(INTEL, DID_EHL_SKU9), (kernel_ulong_t)&ehl_cfg },
+ { PCI_VDEVICE(INTEL, DID_EHL_SKU10), (kernel_ulong_t)&ehl_cfg },
+ { PCI_VDEVICE(INTEL, DID_EHL_SKU11), (kernel_ulong_t)&ehl_cfg },
+ { PCI_VDEVICE(INTEL, DID_EHL_SKU12), (kernel_ulong_t)&ehl_cfg },
+ { PCI_VDEVICE(INTEL, DID_EHL_SKU13), (kernel_ulong_t)&ehl_cfg },
+ { PCI_VDEVICE(INTEL, DID_EHL_SKU14), (kernel_ulong_t)&ehl_cfg },
+ { PCI_VDEVICE(INTEL, DID_EHL_SKU15), (kernel_ulong_t)&ehl_cfg },
+ { },
+};
+MODULE_DEVICE_TABLE(pci, igen6_pci_tbl);
+
+static enum dev_type get_width(int dimm_l, u32 mad_dimm)
+{
+ u32 w = dimm_l ? MAD_DIMM_CH_DLW(mad_dimm) :
+ MAD_DIMM_CH_DSW(mad_dimm);
+
+ switch (w) {
+ case 0:
+ return DEV_X8;
+ case 1:
+ return DEV_X16;
+ case 2:
+ return DEV_X32;
+ default:
+ return DEV_UNKNOWN;
+ }
+}
+
+static enum mem_type get_memory_type(u32 mad_inter)
+{
+ u32 t = MAD_INTER_CHANNEL_DDR_TYPE(mad_inter);
+
+ switch (t) {
+ case 0:
+ return MEM_DDR4;
+ case 1:
+ return MEM_DDR3;
+ case 2:
+ return MEM_LPDDR3;
+ case 3:
+ return MEM_LPDDR4;
+ case 4:
+ return MEM_WIO2;
+ default:
+ return MEM_UNKNOWN;
+ }
+}
+
+static int decode_chan_idx(u64 addr, u64 mask, int intlv_bit)
+{
+ u64 hash_addr = addr & mask, hash = 0;
+ u64 intlv = (addr >> intlv_bit) & 1;
+ int i;
+
+ for (i = 6; i < 20; i++)
+ hash ^= (hash_addr >> i) & 1;
+
+ return (int)hash ^ intlv;
+}
+
+static u64 decode_channel_addr(u64 addr, int intlv_bit)
+{
+ u64 channel_addr;
+
+ /* Remove the interleave bit and shift upper part down to fill gap */
+ channel_addr = GET_BITFIELD(addr, intlv_bit + 1, 63) << intlv_bit;
+ channel_addr |= GET_BITFIELD(addr, 0, intlv_bit - 1);
+
+ return channel_addr;
+}
+
+static void decode_addr(u64 addr, u32 hash, u64 s_size, int l_map,
+ int *idx, u64 *sub_addr)
+{
+ int intlv_bit = CHANNEL_HASH_LSB_MASK_BIT(hash) + 6;
+
+ if (addr > 2 * s_size) {
+ *sub_addr = addr - s_size;
+ *idx = l_map;
+ return;
+ }
+
+ if (CHANNEL_HASH_MODE(hash)) {
+ *sub_addr = decode_channel_addr(addr, intlv_bit);
+ *idx = decode_chan_idx(addr, CHANNEL_HASH_MASK(hash), intlv_bit);
+ } else {
+ *sub_addr = decode_channel_addr(addr, 6);
+ *idx = GET_BITFIELD(addr, 6, 6);
+ }
+}
+
+static int igen6_decode(struct decoded_addr *res)
+{
+ struct igen6_imc *imc = &igen6_pvt->imc[res->mc];
+ u64 addr = res->imc_addr, sub_addr, s_size;
+ int idx, l_map;
+ u32 hash;
+
+ if (addr >= igen6_tom) {
+ edac_dbg(0, "Address 0x%llx out of range\n", addr);
+ return -EINVAL;
+ }
+
+ /* Decode channel */
+ hash = readl(imc->window + CHANNEL_HASH_OFFSET);
+ s_size = imc->ch_s_size;
+ l_map = imc->ch_l_map;
+ decode_addr(addr, hash, s_size, l_map, &idx, &sub_addr);
+ res->channel_idx = idx;
+ res->channel_addr = sub_addr;
+
+ /* Decode sub-channel/DIMM */
+ hash = readl(imc->window + CHANNEL_EHASH_OFFSET);
+ s_size = imc->dimm_s_size[idx];
+ l_map = imc->dimm_l_map[idx];
+ decode_addr(res->channel_addr, hash, s_size, l_map, &idx, &sub_addr);
+ res->sub_channel_idx = idx;
+ res->sub_channel_addr = sub_addr;
+
+ return 0;
+}
+
+static void igen6_output_error(struct decoded_addr *res,
+ struct mem_ctl_info *mci, u64 ecclog)
+{
+ enum hw_event_mc_err_type type = ecclog & ECC_ERROR_LOG_UE ?
+ HW_EVENT_ERR_UNCORRECTED :
+ HW_EVENT_ERR_CORRECTED;
+
+ edac_mc_handle_error(type, mci, 1,
+ res->sys_addr >> PAGE_SHIFT,
+ res->sys_addr & ~PAGE_MASK,
+ ECC_ERROR_LOG_SYND(ecclog),
+ res->channel_idx, res->sub_channel_idx,
+ -1, "", "");
+}
+
+static struct gen_pool *ecclog_gen_pool_create(void)
+{
+ struct gen_pool *pool;
+
+ pool = gen_pool_create(ilog2(sizeof(struct ecclog_node)), -1);
+ if (!pool)
+ return NULL;
+
+ if (gen_pool_add(pool, (unsigned long)ecclog_buf, ECCLOG_POOL_SIZE, -1)) {
+ gen_pool_destroy(pool);
+ return NULL;
+ }
+
+ return pool;
+}
+
+static int ecclog_gen_pool_add(int mc, u64 ecclog)
+{
+ struct ecclog_node *node;
+
+ node = (void *)gen_pool_alloc(ecclog_pool, sizeof(*node));
+ if (!node)
+ return -ENOMEM;
+
+ node->mc = mc;
+ node->ecclog = ecclog;
+ llist_add(&node->llnode, &ecclog_llist);
+
+ return 0;
+}
+
+/*
+ * Either the memory-mapped I/O status register ECC_ERROR_LOG or the PCI
+ * configuration space status register ERRSTS can indicate whether a
+ * correctable error or an uncorrectable error occurred. We only use the
+ * ECC_ERROR_LOG register to check error type, but need to clear both
+ * registers to enable future error events.
+ */
+static u64 ecclog_read_and_clear(struct igen6_imc *imc)
+{
+ u64 ecclog = readq(imc->window + ECC_ERROR_LOG_OFFSET);
+
+ if (ecclog & (ECC_ERROR_LOG_CE | ECC_ERROR_LOG_UE)) {
+ /* Clear CE/UE bits by writing 1s */
+ writeq(ecclog, imc->window + ECC_ERROR_LOG_OFFSET);
+ return ecclog;
+ }
+
+ return 0;
+}
+
+static void errsts_clear(struct igen6_imc *imc)
+{
+ u16 errsts;
+
+ if (pci_read_config_word(imc->pdev, ERRSTS_OFFSET, &errsts)) {
+ igen6_printk(KERN_ERR, "Failed to read ERRSTS\n");
+ return;
+ }
+
+ /* Clear CE/UE bits by writing 1s */
+ if (errsts & (ERRSTS_CE | ERRSTS_UE))
+ pci_write_config_word(imc->pdev, ERRSTS_OFFSET, errsts);
+}
+
+static int errcmd_enable_error_reporting(bool enable)
+{
+ struct igen6_imc *imc = &igen6_pvt->imc[0];
+ u16 errcmd;
+ int rc;
+
+ rc = pci_read_config_word(imc->pdev, ERRCMD_OFFSET, &errcmd);
+ if (rc)
+ return rc;
+
+ if (enable)
+ errcmd |= ERRCMD_CE | ERRSTS_UE;
+ else
+ errcmd &= ~(ERRCMD_CE | ERRSTS_UE);
+
+ rc = pci_write_config_word(imc->pdev, ERRCMD_OFFSET, errcmd);
+ if (rc)
+ return rc;
+
+ return 0;
+}
+
+static int ecclog_handler(void)
+{
+ struct igen6_imc *imc;
+ int i, n = 0;
+ u64 ecclog;
+
+ for (i = 0; i < res_cfg->num_imc; i++) {
+ imc = &igen6_pvt->imc[i];
+
+ /* errsts_clear() isn't NMI-safe. Delay it in the IRQ context */
+
+ ecclog = ecclog_read_and_clear(imc);
+ if (!ecclog)
+ continue;
+
+ if (!ecclog_gen_pool_add(i, ecclog))
+ irq_work_queue(&ecclog_irq_work);
+
+ n++;
+ }
+
+ return n;
+}
+
+static void ecclog_work_cb(struct work_struct *work)
+{
+ struct ecclog_node *node, *tmp;
+ struct mem_ctl_info *mci;
+ struct llist_node *head;
+ struct decoded_addr res;
+ u64 eaddr;
+
+ head = llist_del_all(&ecclog_llist);
+ if (!head)
+ return;
+
+ llist_for_each_entry_safe(node, tmp, head, llnode) {
+ memset(&res, 0, sizeof(res));
+ eaddr = ECC_ERROR_LOG_ADDR(node->ecclog) <<
+ ECC_ERROR_LOG_ADDR_SHIFT;
+ res.mc = node->mc;
+ res.sys_addr = res_cfg->err_addr_to_sys_addr(eaddr);
+ res.imc_addr = res_cfg->err_addr_to_imc_addr(eaddr);
+
+ mci = igen6_pvt->imc[res.mc].mci;
+
+ edac_dbg(2, "MC %d, ecclog = 0x%llx\n", node->mc, node->ecclog);
+ igen6_mc_printk(mci, KERN_DEBUG, "HANDLING IBECC MEMORY ERROR\n");
+ igen6_mc_printk(mci, KERN_DEBUG, "ADDR 0x%llx ", res.sys_addr);
+
+ if (!igen6_decode(&res))
+ igen6_output_error(&res, mci, node->ecclog);
+
+ gen_pool_free(ecclog_pool, (unsigned long)node, sizeof(*node));
+ }
+}
+
+static void ecclog_irq_work_cb(struct irq_work *irq_work)
+{
+ int i;
+
+ for (i = 0; i < res_cfg->num_imc; i++)
+ errsts_clear(&igen6_pvt->imc[i]);
+
+ if (!llist_empty(&ecclog_llist))
+ schedule_work(&ecclog_work);
+}
+
+static int ecclog_nmi_handler(unsigned int cmd, struct pt_regs *regs)
+{
+ unsigned char reason;
+
+ if (!ecclog_handler())
+ return NMI_DONE;
+
+ /*
+ * Both In-Band ECC correctable error and uncorrectable error are
+ * reported by SERR# NMI. The NMI generic code (see pci_serr_error())
+ * doesn't clear the bit NMI_REASON_CLEAR_SERR (in port 0x61) to
+ * re-enable the SERR# NMI after NMI handling. So clear this bit here
+ * to re-enable SERR# NMI for receiving future In-Band ECC errors.
+ */
+ reason = x86_platform.get_nmi_reason() & NMI_REASON_CLEAR_MASK;
+ reason |= NMI_REASON_CLEAR_SERR;
+ outb(reason, NMI_REASON_PORT);
+ reason &= ~NMI_REASON_CLEAR_SERR;
+ outb(reason, NMI_REASON_PORT);
+
+ return NMI_HANDLED;
+}
+
+static bool igen6_check_ecc(struct igen6_imc *imc)
+{
+ u32 activate = readl(imc->window + IBECC_ACTIVATE_OFFSET);
+
+ return !!(activate & IBECC_ACTIVATE_EN);
+}
+
+static int igen6_get_dimm_config(struct mem_ctl_info *mci)
+{
+ struct igen6_imc *imc = mci->pvt_info;
+ u32 mad_inter, mad_intra, mad_dimm;
+ int i, j, ndimms, mc = imc->mc;
+ struct dimm_info *dimm;
+ enum mem_type mtype;
+ enum dev_type dtype;
+ u64 dsize;
+ bool ecc;
+
+ edac_dbg(2, "\n");
+
+ mad_inter = readl(imc->window + MAD_INTER_CHANNEL_OFFSET);
+ mtype = get_memory_type(mad_inter);
+ ecc = igen6_check_ecc(imc);
+ imc->ch_s_size = MAD_INTER_CHANNEL_CH_S_SIZE(mad_inter);
+ imc->ch_l_map = MAD_INTER_CHANNEL_CH_L_MAP(mad_inter);
+
+ for (i = 0; i < NUM_CHANNELS; i++) {
+ mad_intra = readl(imc->window + MAD_INTRA_CH0_OFFSET + i * 4);
+ mad_dimm = readl(imc->window + MAD_DIMM_CH0_OFFSET + i * 4);
+
+ imc->dimm_l_size[i] = MAD_DIMM_CH_DIMM_L_SIZE(mad_dimm);
+ imc->dimm_s_size[i] = MAD_DIMM_CH_DIMM_S_SIZE(mad_dimm);
+ imc->dimm_l_map[i] = MAD_INTRA_CH_DIMM_L_MAP(mad_intra);
+ ndimms = 0;
+
+ for (j = 0; j < NUM_DIMMS; j++) {
+ dimm = edac_get_dimm(mci, i, j, 0);
+
+ if (j ^ imc->dimm_l_map[i]) {
+ dtype = get_width(0, mad_dimm);
+ dsize = imc->dimm_s_size[i];
+ } else {
+ dtype = get_width(1, mad_dimm);
+ dsize = imc->dimm_l_size[i];
+ }
+
+ if (!dsize)
+ continue;
+
+ dimm->grain = 64;
+ dimm->mtype = mtype;
+ dimm->dtype = dtype;
+ dimm->nr_pages = MiB_TO_PAGES(dsize >> 20);
+ dimm->edac_mode = EDAC_SECDED;
+ snprintf(dimm->label, sizeof(dimm->label),
+ "MC#%d_Chan#%d_DIMM#%d", mc, i, j);
+ edac_dbg(0, "MC %d, Channel %d, DIMM %d, Size %llu MiB (%u pages)\n",
+ mc, i, j, dsize >> 20, dimm->nr_pages);
+
+ ndimms++;
+ }
+
+ if (ndimms && !ecc) {
+ igen6_printk(KERN_ERR, "MC%d In-Band ECC is disabled\n", mc);
+ return -ENODEV;
+ }
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_EDAC_DEBUG
+/* Top of upper usable DRAM */
+static u64 igen6_touud;
+#define TOUUD_OFFSET 0xa8
+
+static void igen6_reg_dump(struct igen6_imc *imc)
+{
+ int i;
+
+ edac_dbg(2, "CHANNEL_HASH : 0x%x\n",
+ readl(imc->window + CHANNEL_HASH_OFFSET));
+ edac_dbg(2, "CHANNEL_EHASH : 0x%x\n",
+ readl(imc->window + CHANNEL_EHASH_OFFSET));
+ edac_dbg(2, "MAD_INTER_CHANNEL: 0x%x\n",
+ readl(imc->window + MAD_INTER_CHANNEL_OFFSET));
+ edac_dbg(2, "ECC_ERROR_LOG : 0x%llx\n",
+ readq(imc->window + ECC_ERROR_LOG_OFFSET));
+
+ for (i = 0; i < NUM_CHANNELS; i++) {
+ edac_dbg(2, "MAD_INTRA_CH%d : 0x%x\n", i,
+ readl(imc->window + MAD_INTRA_CH0_OFFSET + i * 4));
+ edac_dbg(2, "MAD_DIMM_CH%d : 0x%x\n", i,
+ readl(imc->window + MAD_DIMM_CH0_OFFSET + i * 4));
+ }
+ edac_dbg(2, "TOLUD : 0x%x", igen6_tolud);
+ edac_dbg(2, "TOUUD : 0x%llx", igen6_touud);
+ edac_dbg(2, "TOM : 0x%llx", igen6_tom);
+}
+
+static struct dentry *igen6_test;
+
+static int debugfs_u64_set(void *data, u64 val)
+{
+ u64 ecclog;
+
+ if ((val >= igen6_tolud && val < _4GB) || val >= igen6_touud) {
+ edac_dbg(0, "Address 0x%llx out of range\n", val);
+ return 0;
+ }
+
+ pr_warn_once("Fake error to 0x%llx injected via debugfs\n", val);
+
+ val >>= ECC_ERROR_LOG_ADDR_SHIFT;
+ ecclog = (val << ECC_ERROR_LOG_ADDR_SHIFT) | ECC_ERROR_LOG_CE;
+
+ if (!ecclog_gen_pool_add(0, ecclog))
+ irq_work_queue(&ecclog_irq_work);
+
+ return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(fops_u64_wo, NULL, debugfs_u64_set, "%llu\n");
+
+static void igen6_debug_setup(void)
+{
+ igen6_test = edac_debugfs_create_dir("igen6_test");
+ if (!igen6_test)
+ return;
+
+ if (!edac_debugfs_create_file("addr", 0200, igen6_test,
+ NULL, &fops_u64_wo)) {
+ debugfs_remove(igen6_test);
+ igen6_test = NULL;
+ }
+}
+
+static void igen6_debug_teardown(void)
+{
+ debugfs_remove_recursive(igen6_test);
+}
+#else
+static void igen6_reg_dump(struct igen6_imc *imc) {}
+static void igen6_debug_setup(void) {}
+static void igen6_debug_teardown(void) {}
+#endif
+
+static int igen6_pci_setup(struct pci_dev *pdev, u64 *mchbar)
+{
+ union {
+ u64 v;
+ struct {
+ u32 v_lo;
+ u32 v_hi;
+ };
+ } u;
+
+ edac_dbg(2, "\n");
+
+ if (!res_cfg->ibecc_available(pdev)) {
+ edac_dbg(2, "No In-Band ECC IP\n");
+ goto fail;
+ }
+
+ if (pci_read_config_dword(pdev, TOLUD_OFFSET, &igen6_tolud)) {
+ igen6_printk(KERN_ERR, "Failed to read TOLUD\n");
+ goto fail;
+ }
+
+ igen6_tolud &= GENMASK(31, 20);
+
+ if (pci_read_config_dword(pdev, TOM_OFFSET, &u.v_lo)) {
+ igen6_printk(KERN_ERR, "Failed to read lower TOM\n");
+ goto fail;
+ }
+
+ if (pci_read_config_dword(pdev, TOM_OFFSET + 4, &u.v_hi)) {
+ igen6_printk(KERN_ERR, "Failed to read upper TOM\n");
+ goto fail;
+ }
+
+ igen6_tom = u.v & GENMASK_ULL(38, 20);
+
+ if (pci_read_config_dword(pdev, MCHBAR_OFFSET, &u.v_lo)) {
+ igen6_printk(KERN_ERR, "Failed to read lower MCHBAR\n");
+ goto fail;
+ }
+
+ if (pci_read_config_dword(pdev, MCHBAR_OFFSET + 4, &u.v_hi)) {
+ igen6_printk(KERN_ERR, "Failed to read upper MCHBAR\n");
+ goto fail;
+ }
+
+ if (!(u.v & MCHBAR_EN)) {
+ igen6_printk(KERN_ERR, "MCHBAR is disabled\n");
+ goto fail;
+ }
+
+ *mchbar = MCHBAR_BASE(u.v);
+
+#ifdef CONFIG_EDAC_DEBUG
+ if (pci_read_config_dword(pdev, TOUUD_OFFSET, &u.v_lo))
+ edac_dbg(2, "Failed to read lower TOUUD\n");
+ else if (pci_read_config_dword(pdev, TOUUD_OFFSET + 4, &u.v_hi))
+ edac_dbg(2, "Failed to read upper TOUUD\n");
+ else
+ igen6_touud = u.v & GENMASK_ULL(38, 20);
+#endif
+
+ return 0;
+fail:
+ return -ENODEV;
+}
+
+static int igen6_register_mci(int mc, u64 mchbar, struct pci_dev *pdev)
+{
+ struct edac_mc_layer layers[2];
+ struct mem_ctl_info *mci;
+ struct igen6_imc *imc;
+ void __iomem *window;
+ int rc;
+
+ edac_dbg(2, "\n");
+
+ mchbar += mc * MCHBAR_SIZE;
+ window = ioremap(mchbar, MCHBAR_SIZE);
+ if (!window) {
+ igen6_printk(KERN_ERR, "Failed to ioremap 0x%llx\n", mchbar);
+ return -ENODEV;
+ }
+
+ layers[0].type = EDAC_MC_LAYER_CHANNEL;
+ layers[0].size = NUM_CHANNELS;
+ layers[0].is_virt_csrow = false;
+ layers[1].type = EDAC_MC_LAYER_SLOT;
+ layers[1].size = NUM_DIMMS;
+ layers[1].is_virt_csrow = true;
+
+ mci = edac_mc_alloc(mc, ARRAY_SIZE(layers), layers, 0);
+ if (!mci) {
+ rc = -ENOMEM;
+ goto fail;
+ }
+
+ mci->ctl_name = kasprintf(GFP_KERNEL, "Intel_client_SoC MC#%d", mc);
+ if (!mci->ctl_name) {
+ rc = -ENOMEM;
+ goto fail2;
+ }
+
+ mci->mtype_cap = MEM_FLAG_LPDDR4 | MEM_FLAG_DDR4;
+ mci->edac_ctl_cap = EDAC_FLAG_SECDED;
+ mci->edac_cap = EDAC_FLAG_SECDED;
+ mci->mod_name = EDAC_MOD_STR;
+ mci->dev_name = pci_name(pdev);
+ mci->pvt_info = &igen6_pvt->imc[mc];
+
+ imc = mci->pvt_info;
+ device_initialize(&imc->dev);
+ /*
+ * EDAC core uses mci->pdev(pointer of structure device) as
+ * memory controller ID. The client SoCs attach one or more
+ * memory controllers to single pci_dev (single pci_dev->dev
+ * can be for multiple memory controllers).
+ *
+ * To make mci->pdev unique, assign pci_dev->dev to mci->pdev
+ * for the first memory controller and assign a unique imc->dev
+ * to mci->pdev for each non-first memory controller.
+ */
+ mci->pdev = mc ? &imc->dev : &pdev->dev;
+ imc->mc = mc;
+ imc->pdev = pdev;
+ imc->window = window;
+
+ igen6_reg_dump(imc);
+
+ rc = igen6_get_dimm_config(mci);
+ if (rc)
+ goto fail3;
+
+ rc = edac_mc_add_mc(mci);
+ if (rc) {
+ igen6_printk(KERN_ERR, "Failed to register mci#%d\n", mc);
+ goto fail3;
+ }
+
+ imc->mci = mci;
+ return 0;
+fail3:
+ kfree(mci->ctl_name);
+fail2:
+ edac_mc_free(mci);
+fail:
+ iounmap(window);
+ return rc;
+}
+
+static void igen6_unregister_mcis(void)
+{
+ struct mem_ctl_info *mci;
+ struct igen6_imc *imc;
+ int i;
+
+ edac_dbg(2, "\n");
+
+ for (i = 0; i < res_cfg->num_imc; i++) {
+ imc = &igen6_pvt->imc[i];
+ mci = imc->mci;
+ if (!mci)
+ continue;
+
+ edac_mc_del_mc(mci->pdev);
+ kfree(mci->ctl_name);
+ edac_mc_free(mci);
+ iounmap(imc->window);
+ }
+}
+
+static int igen6_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ u64 mchbar;
+ int i, rc;
+
+ edac_dbg(2, "\n");
+
+ igen6_pvt = kzalloc(sizeof(*igen6_pvt), GFP_KERNEL);
+ if (!igen6_pvt)
+ return -ENOMEM;
+
+ res_cfg = (struct res_config *)ent->driver_data;
+
+ rc = igen6_pci_setup(pdev, &mchbar);
+ if (rc)
+ goto fail;
+
+ for (i = 0; i < res_cfg->num_imc; i++) {
+ rc = igen6_register_mci(i, mchbar, pdev);
+ if (rc)
+ goto fail2;
+ }
+
+ ecclog_pool = ecclog_gen_pool_create();
+ if (!ecclog_pool) {
+ rc = -ENOMEM;
+ goto fail2;
+ }
+
+ INIT_WORK(&ecclog_work, ecclog_work_cb);
+ init_irq_work(&ecclog_irq_work, ecclog_irq_work_cb);
+
+ /* Check if any pending errors before registering the NMI handler */
+ ecclog_handler();
+
+ rc = register_nmi_handler(NMI_SERR, ecclog_nmi_handler,
+ 0, IGEN6_NMI_NAME);
+ if (rc) {
+ igen6_printk(KERN_ERR, "Failed to register NMI handler\n");
+ goto fail3;
+ }
+
+ /* Enable error reporting */
+ rc = errcmd_enable_error_reporting(true);
+ if (rc) {
+ igen6_printk(KERN_ERR, "Failed to enable error reporting\n");
+ goto fail4;
+ }
+
+ igen6_debug_setup();
+ return 0;
+fail4:
+ unregister_nmi_handler(NMI_SERR, IGEN6_NMI_NAME);
+fail3:
+ gen_pool_destroy(ecclog_pool);
+fail2:
+ igen6_unregister_mcis();
+fail:
+ kfree(igen6_pvt);
+ return rc;
+}
+
+static void igen6_remove(struct pci_dev *pdev)
+{
+ edac_dbg(2, "\n");
+
+ igen6_debug_teardown();
+ errcmd_enable_error_reporting(false);
+ unregister_nmi_handler(NMI_SERR, IGEN6_NMI_NAME);
+ irq_work_sync(&ecclog_irq_work);
+ flush_work(&ecclog_work);
+ gen_pool_destroy(ecclog_pool);
+ igen6_unregister_mcis();
+ kfree(igen6_pvt);
+}
+
+static struct pci_driver igen6_driver = {
+ .name = EDAC_MOD_STR,
+ .probe = igen6_probe,
+ .remove = igen6_remove,
+ .id_table = igen6_pci_tbl,
+};
+
+static int __init igen6_init(void)
+{
+ const char *owner;
+ int rc;
+
+ edac_dbg(2, "\n");
+
+ owner = edac_get_owner();
+ if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR)))
+ return -ENODEV;
+
+ edac_op_state = EDAC_OPSTATE_NMI;
+
+ rc = pci_register_driver(&igen6_driver);
+ if (rc)
+ return rc;
+
+ igen6_printk(KERN_INFO, "%s\n", IGEN6_REVISION);
+
+ return 0;
+}
+
+static void __exit igen6_exit(void)
+{
+ edac_dbg(2, "\n");
+
+ pci_unregister_driver(&igen6_driver);
+}
+
+module_init(igen6_init);
+module_exit(igen6_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Qiuxu Zhuo");
+MODULE_DESCRIPTION("MC Driver for Intel client SoC using In-Band ECC");
diff --git a/drivers/edac/r82600_edac.c b/drivers/edac/r82600_edac.c
index 851e53e122aa..d0aef83dca2a 100644
--- a/drivers/edac/r82600_edac.c
+++ b/drivers/edac/r82600_edac.c
@@ -204,7 +204,6 @@ static void r82600_check(struct mem_ctl_info *mci)
{
struct r82600_error_info info;
- edac_dbg(1, "MC%d\n", mci->mc_idx);
r82600_get_error_info(mci, &info);
r82600_process_error_info(mci, &info, 1);
}
diff --git a/drivers/edac/skx_base.c b/drivers/edac/skx_base.c
index 2c7db95df326..6a4f0b27c654 100644
--- a/drivers/edac/skx_base.c
+++ b/drivers/edac/skx_base.c
@@ -174,7 +174,7 @@ static bool skx_check_ecc(u32 mcmtr)
return !!GET_BITFIELD(mcmtr, 2, 2);
}
-static int skx_get_dimm_config(struct mem_ctl_info *mci)
+static int skx_get_dimm_config(struct mem_ctl_info *mci, struct res_config *cfg)
{
struct skx_pvt *pvt = mci->pvt_info;
u32 mtr, mcmtr, amap, mcddrtcfg;
@@ -195,7 +195,7 @@ static int skx_get_dimm_config(struct mem_ctl_info *mci)
pci_read_config_dword(imc->chan[i].cdev,
0x80 + 4 * j, &mtr);
if (IS_DIMM_PRESENT(mtr)) {
- ndimms += skx_get_dimm_info(mtr, mcmtr, amap, dimm, imc, i, j);
+ ndimms += skx_get_dimm_info(mtr, mcmtr, amap, dimm, imc, i, j, cfg);
} else if (IS_NVDIMM_PRESENT(mcddrtcfg, j)) {
ndimms += skx_get_nvdimm_info(dimm, imc, i, j,
EDAC_MOD_STR);
@@ -702,7 +702,7 @@ static int __init skx_init(void)
d->imc[i].node_id = node_id;
rc = skx_register_mci(&d->imc[i], d->imc[i].chan[0].cdev,
"Skylake Socket", EDAC_MOD_STR,
- skx_get_dimm_config);
+ skx_get_dimm_config, cfg);
if (rc < 0)
goto fail;
}
diff --git a/drivers/edac/skx_common.c b/drivers/edac/skx_common.c
index 2b4ce8e5ac2f..81c3e2ec6f56 100644
--- a/drivers/edac/skx_common.c
+++ b/drivers/edac/skx_common.c
@@ -304,15 +304,25 @@ static int skx_get_dimm_attr(u32 reg, int lobit, int hibit, int add,
#define numcol(reg) skx_get_dimm_attr(reg, 0, 1, 10, 0, 2, "cols")
int skx_get_dimm_info(u32 mtr, u32 mcmtr, u32 amap, struct dimm_info *dimm,
- struct skx_imc *imc, int chan, int dimmno)
+ struct skx_imc *imc, int chan, int dimmno,
+ struct res_config *cfg)
{
- int banks = 16, ranks, rows, cols, npages;
+ int banks, ranks, rows, cols, npages;
+ enum mem_type mtype;
u64 size;
ranks = numrank(mtr);
rows = numrow(mtr);
cols = numcol(mtr);
+ if (cfg->support_ddr5 && (amap & 0x8)) {
+ banks = 32;
+ mtype = MEM_DDR5;
+ } else {
+ banks = 16;
+ mtype = MEM_DDR4;
+ }
+
/*
* Compute size in 8-byte (2^3) words, then shift to MiB (2^20)
*/
@@ -332,7 +342,7 @@ int skx_get_dimm_info(u32 mtr, u32 mcmtr, u32 amap, struct dimm_info *dimm,
dimm->nr_pages = npages;
dimm->grain = 32;
dimm->dtype = get_width(mtr);
- dimm->mtype = MEM_DDR4;
+ dimm->mtype = mtype;
dimm->edac_mode = EDAC_SECDED; /* likely better than this */
snprintf(dimm->label, sizeof(dimm->label), "CPU_SrcID#%u_MC#%u_Chan#%u_DIMM#%u",
imc->src_id, imc->lmc, chan, dimmno);
@@ -390,7 +400,8 @@ unknown_size:
int skx_register_mci(struct skx_imc *imc, struct pci_dev *pdev,
const char *ctl_name, const char *mod_str,
- get_dimm_config_f get_dimm_config)
+ get_dimm_config_f get_dimm_config,
+ struct res_config *cfg)
{
struct mem_ctl_info *mci;
struct edac_mc_layer layers[2];
@@ -425,13 +436,15 @@ int skx_register_mci(struct skx_imc *imc, struct pci_dev *pdev,
}
mci->mtype_cap = MEM_FLAG_DDR4 | MEM_FLAG_NVDIMM;
+ if (cfg->support_ddr5)
+ mci->mtype_cap |= MEM_FLAG_DDR5;
mci->edac_ctl_cap = EDAC_FLAG_NONE;
mci->edac_cap = EDAC_FLAG_NONE;
mci->mod_name = mod_str;
mci->dev_name = pci_name(pdev);
mci->ctl_page_to_phys = NULL;
- rc = get_dimm_config(mci);
+ rc = get_dimm_config(mci, cfg);
if (rc < 0)
goto fail;
diff --git a/drivers/edac/skx_common.h b/drivers/edac/skx_common.h
index 78f8c1de0b71..bf56bebff138 100644
--- a/drivers/edac/skx_common.h
+++ b/drivers/edac/skx_common.h
@@ -59,6 +59,7 @@ struct skx_dev {
struct mem_ctl_info *mci;
struct pci_dev *mdev; /* for i10nm CPU */
void __iomem *mbase; /* for i10nm CPU */
+ int chan_mmio_sz; /* for i10nm CPU */
u8 mc; /* system wide mc# */
u8 lmc; /* socket relative mc# */
u8 src_id, node_id;
@@ -82,7 +83,8 @@ struct skx_pvt {
enum type {
SKX,
- I10NM
+ I10NM,
+ SPR
};
enum {
@@ -118,9 +120,13 @@ struct res_config {
unsigned int decs_did;
/* Default bus number configuration register offset */
int busno_cfg_offset;
+ /* Per DDR channel memory-mapped I/O size */
+ int ddr_chan_mmio_sz;
+ bool support_ddr5;
};
-typedef int (*get_dimm_config_f)(struct mem_ctl_info *mci);
+typedef int (*get_dimm_config_f)(struct mem_ctl_info *mci,
+ struct res_config *cfg);
typedef bool (*skx_decode_f)(struct decoded_addr *res);
typedef void (*skx_show_retry_log_f)(struct decoded_addr *res, char *msg, int len);
@@ -136,14 +142,16 @@ int skx_get_all_bus_mappings(struct res_config *cfg, struct list_head **list);
int skx_get_hi_lo(unsigned int did, int off[], u64 *tolm, u64 *tohm);
int skx_get_dimm_info(u32 mtr, u32 mcmtr, u32 amap, struct dimm_info *dimm,
- struct skx_imc *imc, int chan, int dimmno);
+ struct skx_imc *imc, int chan, int dimmno,
+ struct res_config *cfg);
int skx_get_nvdimm_info(struct dimm_info *dimm, struct skx_imc *imc,
int chan, int dimmno, const char *mod_str);
int skx_register_mci(struct skx_imc *imc, struct pci_dev *pdev,
const char *ctl_name, const char *mod_str,
- get_dimm_config_f get_dimm_config);
+ get_dimm_config_f get_dimm_config,
+ struct res_config *cfg);
int skx_mce_check_error(struct notifier_block *nb, unsigned long val,
void *data);
diff --git a/drivers/edac/synopsys_edac.c b/drivers/edac/synopsys_edac.c
index 12211dc040e8..7e7146b22c16 100644
--- a/drivers/edac/synopsys_edac.c
+++ b/drivers/edac/synopsys_edac.c
@@ -1344,7 +1344,8 @@ static int mc_probe(struct platform_device *pdev)
#ifdef CONFIG_EDAC_DEBUG
if (priv->p_data->quirks & DDR_ECC_DATA_POISON_SUPPORT) {
- if (edac_create_sysfs_attributes(mci)) {
+ rc = edac_create_sysfs_attributes(mci);
+ if (rc) {
edac_printk(KERN_ERR, EDAC_MC,
"Failed to create sysfs entries\n");
goto free_edac_mc;
diff --git a/drivers/edac/x38_edac.c b/drivers/edac/x38_edac.c
index a65e2f78a402..49ab5721aab2 100644
--- a/drivers/edac/x38_edac.c
+++ b/drivers/edac/x38_edac.c
@@ -238,7 +238,6 @@ static void x38_check(struct mem_ctl_info *mci)
{
struct x38_error_info info;
- edac_dbg(1, "MC%d\n", mci->mc_idx);
x38_get_and_clear_error_info(mci, &info);
x38_process_error_info(mci, &info);
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-27 17:13:34 +0300