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Message-ID: <Zy5DXjsbsm4cQGaS@fan>
Date: Fri, 8 Nov 2024 08:59:10 -0800
From: Fan Ni <nifan.cxl@...il.com>
To: shiju.jose@...wei.com
Cc: linux-edac@...r.kernel.org, linux-cxl@...r.kernel.org,
linux-acpi@...r.kernel.org, linux-mm@...ck.org,
linux-kernel@...r.kernel.org, bp@...en8.de, tony.luck@...el.com,
rafael@...nel.org, lenb@...nel.org, mchehab@...nel.org,
dan.j.williams@...el.com, dave@...olabs.net,
jonathan.cameron@...wei.com, gregkh@...uxfoundation.org,
sudeep.holla@....com, jassisinghbrar@...il.com,
dave.jiang@...el.com, alison.schofield@...el.com,
vishal.l.verma@...el.com, ira.weiny@...el.com, david@...hat.com,
Vilas.Sridharan@....com, leo.duran@....com, Yazen.Ghannam@....com,
rientjes@...gle.com, jiaqiyan@...gle.com, Jon.Grimm@....com,
dave.hansen@...ux.intel.com, naoya.horiguchi@....com,
james.morse@....com, jthoughton@...gle.com, somasundaram.a@....com,
erdemaktas@...gle.com, pgonda@...gle.com, duenwen@...gle.com,
gthelen@...gle.com, wschwartz@...erecomputing.com,
dferguson@...erecomputing.com, wbs@...amperecomputing.com,
nifan.cxl@...il.com, tanxiaofei@...wei.com,
prime.zeng@...ilicon.com, roberto.sassu@...wei.com,
kangkang.shen@...urewei.com, wanghuiqiang@...wei.com,
linuxarm@...wei.com
Subject: Re: [PATCH v15 11/15] EDAC: Add memory repair control feature
On Fri, Nov 01, 2024 at 09:17:29AM +0000, shiju.jose@...wei.com wrote:
> From: Shiju Jose <shiju.jose@...wei.com>
>
> Add generic EDAC memory repair control, eg. PPR(Post Package Repair),
> memory sparing etc, control driver in order to control memory repairs
> in the system. Supports sPPR(soft PPR), hPPR(hard PPR), soft/hard memory
> sparing, memory sparing at cacheline/row/bank/rank granularity etc.
> Device with memory repair features registers with EDAC device driver,
> which retrieves memory repair descriptor from EDAC memory repair driver and
> exposes the sysfs repair control attributes to userspace in
> /sys/bus/edac/devices/<dev-name>/mem_repairX/.
>
> The common memory repair control interface abstracts the control of
> arbitrary memory repair functionality into a standardized set of functions.
> The sysfs memory repair attribute nodes are only available if the client
> driver has implemented the corresponding attribute callback function and
> provided operations to the EDAC device driver during registration.
>
> Signed-off-by: Shiju Jose <shiju.jose@...wei.com>
> ---
> .../ABI/testing/sysfs-edac-memory-repair | 168 ++++++++
> drivers/edac/Makefile | 2 +-
> drivers/edac/edac_device.c | 32 ++
> drivers/edac/mem_repair.c | 367 ++++++++++++++++++
> include/linux/edac.h | 87 +++++
> 5 files changed, 655 insertions(+), 1 deletion(-)
> create mode 100644 Documentation/ABI/testing/sysfs-edac-memory-repair
> create mode 100755 drivers/edac/mem_repair.c
>
> diff --git a/Documentation/ABI/testing/sysfs-edac-memory-repair b/Documentation/ABI/testing/sysfs-edac-memory-repair
> new file mode 100644
> index 000000000000..393206b8d418
...
@@ -610,6 +611,7 @@ int edac_dev_register(struct device *parent, char *name,
> const struct edac_dev_feature *ras_features)
> {
> const struct attribute_group **ras_attr_groups;
> + int mem_repair_cnt = 0, mem_repair_inst = 0;
> int scrub_cnt = 0, scrub_inst = 0;
> struct edac_dev_data *dev_data;
> struct edac_dev_feat_ctx *ctx;
> @@ -626,6 +628,10 @@ int edac_dev_register(struct device *parent, char *name,
> attr_gcnt++;
> scrub_cnt++;
> break;
> + case RAS_FEAT_MEM_REPAIR:
> + attr_gcnt++;
> + mem_repair_cnt++;
> + break;
> case RAS_FEAT_ECS:
> attr_gcnt += ras_features[feat].ecs_info.num_media_frus;
> break;
> @@ -652,6 +658,14 @@ int edac_dev_register(struct device *parent, char *name,
> }
> }
>
> + if (mem_repair_cnt) {
> + ctx->mem_repair = kcalloc(mem_repair_cnt, sizeof(*ctx->mem_repair), GFP_KERNEL);
> + if (!ctx->mem_repair) {
> + ret = -ENOMEM;
> + goto groups_free;
If the function returns here, we will have a leak from memory pointed by ctx->scrub.
Fan
> + }
> + }
> +
> attr_gcnt = 0;
> for (feat = 0; feat < num_features; feat++, ras_features++) {
> switch (ras_features->ft_type) {
> @@ -686,6 +700,23 @@ int edac_dev_register(struct device *parent, char *name,
>
> attr_gcnt += ras_features->ecs_info.num_media_frus;
> break;
> + case RAS_FEAT_MEM_REPAIR:
> + if (!ras_features->mem_repair_ops ||
> + mem_repair_inst != ras_features->instance)
> + goto data_mem_free;
> +
> + dev_data = &ctx->mem_repair[mem_repair_inst];
> + dev_data->instance = mem_repair_inst;
> + dev_data->mem_repair_ops = ras_features->mem_repair_ops;
> + dev_data->private = ras_features->ctx;
> + ret = edac_mem_repair_get_desc(parent, &ras_attr_groups[attr_gcnt],
> + ras_features->instance);
> + if (ret)
> + goto data_mem_free;
> +
> + mem_repair_inst++;
> + attr_gcnt++;
> + break;
> default:
> ret = -EINVAL;
> goto data_mem_free;
> @@ -712,6 +743,7 @@ int edac_dev_register(struct device *parent, char *name,
> return devm_add_action_or_reset(parent, edac_dev_unreg, &ctx->dev);
>
> data_mem_free:
> + kfree(ctx->mem_repair);
> kfree(ctx->scrub);
> groups_free:
> kfree(ras_attr_groups);
> diff --git a/drivers/edac/mem_repair.c b/drivers/edac/mem_repair.c
> new file mode 100755
> index 000000000000..93246ad0c9eb
> --- /dev/null
> +++ b/drivers/edac/mem_repair.c
> @@ -0,0 +1,367 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * The generic EDAC memory repair driver is designed to control the memory
> + * devices with memory repair features, such as Post Package Repair (PPR),
> + * memory sparing etc. The common sysfs memory repair interface abstracts
> + * the control of various arbitrary memory repair functionalities into a
> + * unified set of functions.
> + *
> + * Copyright (c) 2024 HiSilicon Limited.
> + */
> +
> +#include <linux/edac.h>
> +
> +enum edac_mem_repair_attributes {
> + MEM_REPAIR_TYPE,
> + MEM_REPAIR_PERSIST_MODE_AVAIL,
> + MEM_REPAIR_PERSIST_MODE,
> + MEM_REPAIR_DPA_SUPPORT,
> + MEM_REPAIR_SAFE_IN_USE,
> + MEM_REPAIR_HPA,
> + MEM_REPAIR_DPA,
> + MEM_REPAIR_NIBBLE_MASK,
> + MEM_REPAIR_BANK_GROUP,
> + MEM_REPAIR_BANK,
> + MEM_REPAIR_RANK,
> + MEM_REPAIR_ROW,
> + MEM_REPAIR_COLUMN,
> + MEM_REPAIR_CHANNEL,
> + MEM_REPAIR_SUB_CHANNEL,
> + MEM_REPAIR_QUERY,
> + MEM_DO_REPAIR,
> + MEM_REPAIR_MAX_ATTRS
> +};
> +
> +struct edac_mem_repair_dev_attr {
> + struct device_attribute dev_attr;
> + u8 instance;
> +};
> +
> +struct edac_mem_repair_context {
> + char name[EDAC_FEAT_NAME_LEN];
> + struct edac_mem_repair_dev_attr mem_repair_dev_attr[MEM_REPAIR_MAX_ATTRS];
> + struct attribute *mem_repair_attrs[MEM_REPAIR_MAX_ATTRS + 1];
> + struct attribute_group group;
> +};
> +
> +#define TO_MEM_REPAIR_DEV_ATTR(_dev_attr) \
> + container_of(_dev_attr, struct edac_mem_repair_dev_attr, dev_attr)
> +
> +#define EDAC_MEM_REPAIR_ATTR_SHOW(attrib, cb, type, format) \
> +static ssize_t attrib##_show(struct device *ras_feat_dev, \
> + struct device_attribute *attr, char *buf) \
> +{ \
> + u8 inst = TO_MEM_REPAIR_DEV_ATTR(attr)->instance; \
> + struct edac_dev_feat_ctx *ctx = dev_get_drvdata(ras_feat_dev); \
> + const struct edac_mem_repair_ops *ops = \
> + ctx->mem_repair[inst].mem_repair_ops; \
> + type data; \
> + int ret; \
> + \
> + ret = ops->cb(ras_feat_dev->parent, ctx->mem_repair[inst].private, \
> + &data); \
> + if (ret) \
> + return ret; \
> + \
> + return sysfs_emit(buf, format, data); \
> +}
> +
> +EDAC_MEM_REPAIR_ATTR_SHOW(repair_type, get_repair_type, u32, "%u\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(persist_mode, get_persist_mode, u32, "%u\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(dpa_support, get_dpa_support, u32, "%u\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(repair_safe_when_in_use, get_repair_safe_when_in_use, u32, "%u\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(hpa, get_hpa, u64, "0x%llx\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(dpa, get_dpa, u64, "0x%llx\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(nibble_mask, get_nibble_mask, u64, "0x%llx\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(bank_group, get_bank_group, u32, "%u\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(bank, get_bank, u32, "%u\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(rank, get_rank, u32, "%u\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(row, get_row, u64, "0x%llx\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(column, get_column, u32, "%u\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(channel, get_channel, u32, "%u\n")
> +EDAC_MEM_REPAIR_ATTR_SHOW(sub_channel, get_sub_channel, u32, "%u\n")
> +
> +#define EDAC_MEM_REPAIR_ATTR_STORE(attrib, cb, type, conv_func) \
> +static ssize_t attrib##_store(struct device *ras_feat_dev, \
> + struct device_attribute *attr, \
> + const char *buf, size_t len) \
> +{ \
> + u8 inst = TO_MEM_REPAIR_DEV_ATTR(attr)->instance; \
> + struct edac_dev_feat_ctx *ctx = dev_get_drvdata(ras_feat_dev); \
> + const struct edac_mem_repair_ops *ops = \
> + ctx->mem_repair[inst].mem_repair_ops; \
> + type data; \
> + int ret; \
> + \
> + ret = conv_func(buf, 0, &data); \
> + if (ret < 0) \
> + return ret; \
> + \
> + ret = ops->cb(ras_feat_dev->parent, ctx->mem_repair[inst].private, \
> + data); \
> + if (ret) \
> + return ret; \
> + \
> + return len; \
> +}
> +
> +EDAC_MEM_REPAIR_ATTR_STORE(persist_mode, set_persist_mode, unsigned long, kstrtoul)
> +EDAC_MEM_REPAIR_ATTR_STORE(hpa, set_hpa, u64, kstrtou64)
> +EDAC_MEM_REPAIR_ATTR_STORE(dpa, set_dpa, u64, kstrtou64)
> +EDAC_MEM_REPAIR_ATTR_STORE(nibble_mask, set_nibble_mask, u64, kstrtou64)
> +EDAC_MEM_REPAIR_ATTR_STORE(bank_group, set_bank_group, unsigned long, kstrtoul)
> +EDAC_MEM_REPAIR_ATTR_STORE(bank, set_bank, unsigned long, kstrtoul)
> +EDAC_MEM_REPAIR_ATTR_STORE(rank, set_rank, unsigned long, kstrtoul)
> +EDAC_MEM_REPAIR_ATTR_STORE(row, set_row, u64, kstrtou64)
> +EDAC_MEM_REPAIR_ATTR_STORE(column, set_column, unsigned long, kstrtoul)
> +EDAC_MEM_REPAIR_ATTR_STORE(channel, set_channel, unsigned long, kstrtoul)
> +EDAC_MEM_REPAIR_ATTR_STORE(sub_channel, set_sub_channel, unsigned long, kstrtoul)
> +
> +#define EDAC_MEM_REPAIR_DO_OP(attrib, cb) \
> +static ssize_t attrib##_store(struct device *ras_feat_dev, \
> + struct device_attribute *attr, \
> + const char *buf, size_t len) \
> +{ \
> + u8 inst = TO_MEM_REPAIR_DEV_ATTR(attr)->instance; \
> + struct edac_dev_feat_ctx *ctx = dev_get_drvdata(ras_feat_dev); \
> + const struct edac_mem_repair_ops *ops = ctx->mem_repair[inst].mem_repair_ops; \
> + int ret; \
> + \
> + ret = ops->cb(ras_feat_dev->parent, ctx->mem_repair[inst].private); \
> + if (ret) \
> + return ret; \
> + \
> + return len; \
> +}
> +
> +EDAC_MEM_REPAIR_DO_OP(query, do_query)
> +EDAC_MEM_REPAIR_DO_OP(repair, do_repair)
> +
> +static ssize_t persist_mode_avail_show(struct device *ras_feat_dev,
> + struct device_attribute *attr, char *buf)
> +{
> + struct edac_dev_feat_ctx *ctx = dev_get_drvdata(ras_feat_dev);
> + u8 inst = TO_MEM_REPAIR_DEV_ATTR(attr)->instance;
> + const struct edac_mem_repair_ops *ops = ctx->mem_repair[inst].mem_repair_ops;
> +
> + return ops->get_persist_mode_avail(ras_feat_dev->parent,
> + ctx->mem_repair[inst].private, buf);
> +}
> +
> +static umode_t mem_repair_attr_visible(struct kobject *kobj, struct attribute *a, int attr_id)
> +{
> + struct device *ras_feat_dev = kobj_to_dev(kobj);
> + struct device_attribute *dev_attr = container_of(a, struct device_attribute, attr);
> + struct edac_dev_feat_ctx *ctx = dev_get_drvdata(ras_feat_dev);
> + u8 inst = TO_MEM_REPAIR_DEV_ATTR(dev_attr)->instance;
> + const struct edac_mem_repair_ops *ops = ctx->mem_repair[inst].mem_repair_ops;
> +
> + switch (attr_id) {
> + case MEM_REPAIR_TYPE:
> + if (ops->get_repair_type)
> + return a->mode;
> + break;
> + case MEM_REPAIR_PERSIST_MODE_AVAIL:
> + if (ops->get_persist_mode_avail)
> + return a->mode;
> + break;
> + case MEM_REPAIR_PERSIST_MODE:
> + if (ops->get_persist_mode) {
> + if (ops->set_persist_mode)
> + return a->mode;
> + else
> + return 0444;
> + }
> + break;
> + case MEM_REPAIR_DPA_SUPPORT:
> + if (ops->get_dpa_support)
> + return a->mode;
> + break;
> + case MEM_REPAIR_SAFE_IN_USE:
> + if (ops->get_repair_safe_when_in_use)
> + return a->mode;
> + break;
> + case MEM_REPAIR_HPA:
> + if (ops->get_hpa) {
> + if (ops->set_hpa)
> + return a->mode;
> + else
> + return 0444;
> + }
> + break;
> + case MEM_REPAIR_DPA:
> + if (ops->get_dpa) {
> + if (ops->set_dpa)
> + return a->mode;
> + else
> + return 0444;
> + }
> + break;
> + case MEM_REPAIR_NIBBLE_MASK:
> + if (ops->get_nibble_mask) {
> + if (ops->set_nibble_mask)
> + return a->mode;
> + else
> + return 0444;
> + }
> + break;
> + case MEM_REPAIR_BANK_GROUP:
> + if (ops->get_bank_group) {
> + if (ops->set_bank_group)
> + return a->mode;
> + else
> + return 0444;
> + }
> + break;
> + case MEM_REPAIR_BANK:
> + if (ops->get_bank) {
> + if (ops->set_bank)
> + return a->mode;
> + else
> + return 0444;
> + }
> + break;
> + case MEM_REPAIR_RANK:
> + if (ops->get_rank) {
> + if (ops->set_rank)
> + return a->mode;
> + else
> + return 0444;
> + }
> + break;
> + case MEM_REPAIR_ROW:
> + if (ops->get_row) {
> + if (ops->set_row)
> + return a->mode;
> + else
> + return 0444;
> + }
> + break;
> + case MEM_REPAIR_COLUMN:
> + if (ops->get_column) {
> + if (ops->set_column)
> + return a->mode;
> + else
> + return 0444;
> + }
> + break;
> + case MEM_REPAIR_CHANNEL:
> + if (ops->get_channel) {
> + if (ops->set_channel)
> + return a->mode;
> + else
> + return 0444;
> + }
> + break;
> + case MEM_REPAIR_SUB_CHANNEL:
> + if (ops->get_sub_channel) {
> + if (ops->set_sub_channel)
> + return a->mode;
> + else
> + return 0444;
> + }
> + break;
> + case MEM_REPAIR_QUERY:
> + if (ops->do_query)
> + return a->mode;
> + break;
> + case MEM_DO_REPAIR:
> + if (ops->do_repair)
> + return a->mode;
> + break;
> + default:
> + break;
> + }
> +
> + return 0;
> +}
> +
> +#define EDAC_MEM_REPAIR_ATTR_RO(_name, _instance) \
> + ((struct edac_mem_repair_dev_attr) { .dev_attr = __ATTR_RO(_name), \
> + .instance = _instance })
> +
> +#define EDAC_MEM_REPAIR_ATTR_WO(_name, _instance) \
> + ((struct edac_mem_repair_dev_attr) { .dev_attr = __ATTR_WO(_name), \
> + .instance = _instance })
> +
> +#define EDAC_MEM_REPAIR_ATTR_RW(_name, _instance) \
> + ((struct edac_mem_repair_dev_attr) { .dev_attr = __ATTR_RW(_name), \
> + .instance = _instance })
> +
> +static int mem_repair_create_desc(struct device *dev,
> + const struct attribute_group **attr_groups,
> + u8 instance)
> +{
> + struct edac_mem_repair_context *ctx;
> + struct attribute_group *group;
> + int i;
> + struct edac_mem_repair_dev_attr dev_attr[] = {
> + [MEM_REPAIR_TYPE] = EDAC_MEM_REPAIR_ATTR_RO(repair_type,
> + instance),
> + [MEM_REPAIR_PERSIST_MODE_AVAIL] =
> + EDAC_MEM_REPAIR_ATTR_RO(persist_mode_avail,
> + instance),
> + [MEM_REPAIR_PERSIST_MODE] =
> + EDAC_MEM_REPAIR_ATTR_RW(persist_mode, instance),
> + [MEM_REPAIR_DPA_SUPPORT] =
> + EDAC_MEM_REPAIR_ATTR_RO(dpa_support, instance),
> + [MEM_REPAIR_SAFE_IN_USE] =
> + EDAC_MEM_REPAIR_ATTR_RO(repair_safe_when_in_use,
> + instance),
> + [MEM_REPAIR_HPA] = EDAC_MEM_REPAIR_ATTR_RW(hpa, instance),
> + [MEM_REPAIR_DPA] = EDAC_MEM_REPAIR_ATTR_RW(dpa, instance),
> + [MEM_REPAIR_NIBBLE_MASK] =
> + EDAC_MEM_REPAIR_ATTR_RW(nibble_mask, instance),
> + [MEM_REPAIR_BANK_GROUP] =
> + EDAC_MEM_REPAIR_ATTR_RW(bank_group, instance),
> + [MEM_REPAIR_BANK] = EDAC_MEM_REPAIR_ATTR_RW(bank, instance),
> + [MEM_REPAIR_RANK] = EDAC_MEM_REPAIR_ATTR_RW(rank, instance),
> + [MEM_REPAIR_ROW] = EDAC_MEM_REPAIR_ATTR_RW(row, instance),
> + [MEM_REPAIR_COLUMN] = EDAC_MEM_REPAIR_ATTR_RW(column, instance),
> + [MEM_REPAIR_CHANNEL] = EDAC_MEM_REPAIR_ATTR_RW(channel, instance),
> + [MEM_REPAIR_SUB_CHANNEL] =
> + EDAC_MEM_REPAIR_ATTR_RW(sub_channel, instance),
> + [MEM_REPAIR_QUERY] = EDAC_MEM_REPAIR_ATTR_WO(query, instance),
> + [MEM_DO_REPAIR] = EDAC_MEM_REPAIR_ATTR_WO(repair, instance)
> + };
> +
> + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
> + if (!ctx)
> + return -ENOMEM;
> +
> + for (i = 0; i < MEM_REPAIR_MAX_ATTRS; i++) {
> + memcpy(&ctx->mem_repair_dev_attr[i].dev_attr,
> + &dev_attr[i], sizeof(dev_attr[i]));
> + ctx->mem_repair_attrs[i] =
> + &ctx->mem_repair_dev_attr[i].dev_attr.attr;
> + }
> +
> + sprintf(ctx->name, "%s%d", "mem_repair", instance);
> + group = &ctx->group;
> + group->name = ctx->name;
> + group->attrs = ctx->mem_repair_attrs;
> + group->is_visible = mem_repair_attr_visible;
> + attr_groups[0] = group;
> +
> + return 0;
> +}
> +
> +/**
> + * edac_mem_repair_get_desc - get EDAC memory repair descriptors
> + * @dev: client device with memory repair feature
> + * @attr_groups: pointer to attribute group container
> + * @instance: device's memory repair instance number.
> + *
> + * Return:
> + * * %0 - Success.
> + * * %-EINVAL - Invalid parameters passed.
> + * * %-ENOMEM - Dynamic memory allocation failed.
> + */
> +int edac_mem_repair_get_desc(struct device *dev,
> + const struct attribute_group **attr_groups, u8 instance)
> +{
> + if (!dev || !attr_groups)
> + return -EINVAL;
> +
> + return mem_repair_create_desc(dev, attr_groups, instance);
> +}
> diff --git a/include/linux/edac.h b/include/linux/edac.h
> index 04385b1a9283..b52730d63088 100644
> --- a/include/linux/edac.h
> +++ b/include/linux/edac.h
> @@ -670,6 +670,7 @@ static inline struct dimm_info *edac_get_dimm(struct mem_ctl_info *mci,
> enum edac_dev_feat {
> RAS_FEAT_SCRUB,
> RAS_FEAT_ECS,
> + RAS_FEAT_MEM_REPAIR,
> RAS_FEAT_MAX
> };
>
> @@ -731,11 +732,95 @@ int edac_ecs_get_desc(struct device *ecs_dev,
> const struct attribute_group **attr_groups,
> u16 num_media_frus);
>
> +enum edac_mem_repair_type {
> + EDAC_TYPE_SPPR,
> + EDAC_TYPE_HPPR,
> + EDAC_TYPE_CACHELINE_MEM_SPARING,
> + EDAC_TYPE_ROW_MEM_SPARING,
> + EDAC_TYPE_BANK_MEM_SPARING,
> + EDAC_TYPE_RANK_MEM_SPARING,
> +};
> +
> +enum edac_mem_repair_persist_mode {
> + EDAC_MEM_REPAIR_SOFT, /* soft memory repair */
> + EDAC_MEM_REPAIR_HARD, /* hard memory repair */
> +};
> +
> +/**
> + * struct edac_mem_repair_ops - memory repair device operations
> + * (all elements optional)
> + * @get_repair_type: get the memory repair type, listed in enum edac_mem_repair_type.
> + * @get_persist_mode_avail: get the persist modes supported in the device.
> + * @get_persist_mode: get the persist mode of the memory repair instance.
> + * @set_persist_mode: set the persist mode for the memory repair instance.
> + * @get_dpa_support: get dpa support flag.
> + * @get_repair_safe_when_in_use: get whether memory media is accessible and
> + * data is retained during repair operation.
> + * @get_hpa: get HPA for memory repair.
> + * @set_hpa: set HPA for memory repair.
> + * @get_dpa: get DPA for memory repair.
> + * @set_dpa: set DPA for memory repair.
> + * @get_nibble_mask: get nibble mask for memory repair.
> + * @set_nibble_mask: set nibble mask for memory repair.
> + * @get_bank_group: get bank group for memory repair.
> + * @set_bank_group: set bank group for memory repair.
> + * @get_bank: get bank for memory repair.
> + * @set_bank: set bank for memory repair.
> + * @get_rank: get rank for memory repair.
> + * @set_rank: set rank for memory repair.
> + * @get_row: get row for memory repair.
> + * @set_row: set row for memory repair.
> + * @get_column: get column for memory repair.
> + * @set_column: set column for memory repair.
> + * @get_channel: get channel for memory repair.
> + * @set_channel: set channel for memory repair.
> + * @get_sub_channel: get sub channel for memory repair.
> + * @set_sub_channel: set sub channel for memory repair.
> + * @do_query: Query memory repair operation for the HPA/DPA/other attrs set
> + * is supported or not.
> + * @do_repair: start memory repair operation for the HPA/DPA/other attrs set.
> + */
> +struct edac_mem_repair_ops {
> + int (*get_repair_type)(struct device *dev, void *drv_data, u32 *val);
> + int (*get_persist_mode_avail)(struct device *dev, void *drv_data, char *buf);
> + int (*get_persist_mode)(struct device *dev, void *drv_data, u32 *mode);
> + int (*set_persist_mode)(struct device *dev, void *drv_data, u32 mode);
> + int (*get_dpa_support)(struct device *dev, void *drv_data, u32 *val);
> + int (*get_repair_safe_when_in_use)(struct device *dev, void *drv_data, u32 *val);
> + int (*get_hpa)(struct device *dev, void *drv_data, u64 *hpa);
> + int (*set_hpa)(struct device *dev, void *drv_data, u64 hpa);
> + int (*get_dpa)(struct device *dev, void *drv_data, u64 *dpa);
> + int (*set_dpa)(struct device *dev, void *drv_data, u64 dpa);
> + int (*get_nibble_mask)(struct device *dev, void *drv_data, u64 *val);
> + int (*set_nibble_mask)(struct device *dev, void *drv_data, u64 val);
> + int (*get_bank_group)(struct device *dev, void *drv_data, u32 *val);
> + int (*set_bank_group)(struct device *dev, void *drv_data, u32 val);
> + int (*get_bank)(struct device *dev, void *drv_data, u32 *val);
> + int (*set_bank)(struct device *dev, void *drv_data, u32 val);
> + int (*get_rank)(struct device *dev, void *drv_data, u32 *val);
> + int (*set_rank)(struct device *dev, void *drv_data, u32 val);
> + int (*get_row)(struct device *dev, void *drv_data, u64 *val);
> + int (*set_row)(struct device *dev, void *drv_data, u64 val);
> + int (*get_column)(struct device *dev, void *drv_data, u32 *val);
> + int (*set_column)(struct device *dev, void *drv_data, u32 val);
> + int (*get_channel)(struct device *dev, void *drv_data, u32 *val);
> + int (*set_channel)(struct device *dev, void *drv_data, u32 val);
> + int (*get_sub_channel)(struct device *dev, void *drv_data, u32 *val);
> + int (*set_sub_channel)(struct device *dev, void *drv_data, u32 val);
> + int (*do_query)(struct device *dev, void *drv_data);
> + int (*do_repair)(struct device *dev, void *drv_data);
> +};
> +
> +int edac_mem_repair_get_desc(struct device *dev,
> + const struct attribute_group **attr_groups,
> + u8 instance);
> +
> /* EDAC device feature information structure */
> struct edac_dev_data {
> union {
> const struct edac_scrub_ops *scrub_ops;
> const struct edac_ecs_ops *ecs_ops;
> + const struct edac_mem_repair_ops *mem_repair_ops;
> };
> u8 instance;
> void *private;
> @@ -746,6 +831,7 @@ struct edac_dev_feat_ctx {
> void *private;
> struct edac_dev_data *scrub;
> struct edac_dev_data ecs;
> + struct edac_dev_data *mem_repair;
> };
>
> struct edac_dev_feature {
> @@ -754,6 +840,7 @@ struct edac_dev_feature {
> union {
> const struct edac_scrub_ops *scrub_ops;
> const struct edac_ecs_ops *ecs_ops;
> + const struct edac_mem_repair_ops *mem_repair_ops;
> };
> void *ctx;
> struct edac_ecs_ex_info ecs_info;
> --
> 2.34.1
>
--
Fan Ni
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