/* SPDX-License-Identifier: GPL-2.0-only */
/*
* NVDIMM Firmware Interface Table - NFIT
*
* Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
*/
#ifndef __NFIT_H__
#define __NFIT_H__
#include <linux/workqueue.h>
#include <linux/libnvdimm.h>
#include <linux/ndctl.h>
#include <linux/types.h>
#include <linux/acpi.h>
#include <acpi/acuuid.h>
/* ACPI 6.1 */
#define UUID_NFIT_BUS "2f10e7a4-9e91-11e4-89d3-123b93f75cba"
/* http://pmem.io/documents/NVDIMM_DSM_Interface-V1.6.pdf */
#define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66"
/* https://github.com/HewlettPackard/hpe-nvm/blob/master/Documentation/ */
#define UUID_NFIT_DIMM_N_HPE1 "9002c334-acf3-4c0e-9642-a235f0d53bc6"
#define UUID_NFIT_DIMM_N_HPE2 "5008664b-b758-41a0-a03c-27c2f2d04f7e"
/* https://msdn.microsoft.com/library/windows/hardware/mt604741 */
#define UUID_NFIT_DIMM_N_MSFT "1ee68b36-d4bd-4a1a-9a16-4f8e53d46e05"
/* http://www.uefi.org/RFIC_LIST (see "Virtual NVDIMM 0x1901") */
#define UUID_NFIT_DIMM_N_HYPERV "5746c5f2-a9a2-4264-ad0e-e4ddc9e09e80"
#define ACPI_NFIT_MEM_FAILED_MASK (ACPI_NFIT_MEM_SAVE_FAILED \
| ACPI_NFIT_MEM_RESTORE_FAILED | ACPI_NFIT_MEM_FLUSH_FAILED \
| ACPI_NFIT_MEM_NOT_ARMED | ACPI_NFIT_MEM_MAP_FAILED)
#define NVDIMM_FAMILY_MAX NVDIMM_FAMILY_HYPERV
#define NVDIMM_STANDARD_CMDMASK \
(1 << ND_CMD_SMART | 1 << ND_CMD_SMART_THRESHOLD | 1 << ND_CMD_DIMM_FLAGS \
| 1 << ND_CMD_GET_CONFIG_SIZE | 1 << ND_CMD_GET_CONFIG_DATA \
| 1 << ND_CMD_SET_CONFIG_DATA | 1 << ND_CMD_VENDOR_EFFECT_LOG_SIZE \
| 1 << ND_CMD_VENDOR_EFFECT_LOG | 1 << ND_CMD_VENDOR)
/*
* Command numbers that the kernel needs to know about to handle
* non-default DSM revision ids
*/
enum nvdimm_family_cmds {
NVDIMM_INTEL_LATCH_SHUTDOWN = 10,
NVDIMM_INTEL_GET_MODES = 11,
NVDIMM_INTEL_GET_FWINFO = 12,
NVDIMM_INTEL_START_FWUPDATE = 13,
NVDIMM_INTEL_SEND_FWUPDATE = 14,
NVDIMM_INTEL_FINISH_FWUPDATE = 15,
NVDIMM_INTEL_QUERY_FWUPDATE = 16,
NVDIMM_INTEL_SET_THRESHOLD = 17,
NVDIMM_INTEL_INJECT_ERROR = 18,
NVDIMM_INTEL_GET_SECURITY_STATE = 19,
NVDIMM_INTEL_SET_PASSPHRASE = 20,
NVDIMM_INTEL_DISABLE_PASSPHRASE = 21,
NVDIMM_INTEL_UNLOCK_UNIT = 22,
NVDIMM_INTEL_FREEZE_LOCK = 23,
NVDIMM_INTEL_SECURE_ERASE = 24,
NVDIMM_INTEL_OVERWRITE = 25,
NVDIMM_INTEL_QUERY_OVERWRITE = 26,
NVDIMM_INTEL_SET_MASTER_PASSPHRASE = 27,
NVDIMM_INTEL_MASTER_SECURE_ERASE = 28,
};
#define NVDIMM_INTEL_SECURITY_CMDMASK \
(1 << NVDIMM_INTEL_GET_SECURITY_STATE | 1 << NVDIMM_INTEL_SET_PASSPHRASE \
| 1 << NVDIMM_INTEL_DISABLE_PASSPHRASE | 1 << NVDIMM_INTEL_UNLOCK_UNIT \
| 1 << NVDIMM_INTEL_FREEZE_LOCK | 1 << NVDIMM_INTEL_SECURE_ERASE \
| 1 << NVDIMM_INTEL_OVERWRITE | 1 << NVDIMM_INTEL_QUERY_OVERWRITE \
| 1 << NVDIMM_INTEL_SET_MASTER_PASSPHRASE \
| 1 << NVDIMM_INTEL_MASTER_SECURE_ERASE)
#define NVDIMM_INTEL_CMDMASK \
(NVDIMM_STANDARD_CMDMASK | 1 << NVDIMM_INTEL_GET_MODES \
| 1 << NVDIMM_INTEL_GET_FWINFO | 1 << NVDIMM_INTEL_START_FWUPDATE \
| 1 << NVDIMM_INTEL_SEND_FWUPDATE | 1 << NVDIMM_INTEL_FINISH_FWUPDATE \
| 1 << NVDIMM_INTEL_QUERY_FWUPDATE | 1 << NVDIMM_INTEL_SET_THRESHOLD \
| 1 << NVDIMM_INTEL_INJECT_ERROR | 1 << NVDIMM_INTEL_LATCH_SHUTDOWN \
| NVDIMM_INTEL_SECURITY_CMDMASK)
enum nfit_uuids {
/* for simplicity alias the uuid index with the family id */
NFIT_DEV_DIMM = NVDIMM_FAMILY_INTEL,
NFIT_DEV_DIMM_N_HPE1 = NVDIMM_FAMILY_HPE1,
NFIT_DEV_DIMM_N_HPE2 = NVDIMM_FAMILY_HPE2,
NFIT_DEV_DIMM_N_MSFT = NVDIMM_FAMILY_MSFT,
NFIT_DEV_DIMM_N_HYPERV = NVDIMM_FAMILY_HYPERV,
NFIT_SPA_VOLATILE,
NFIT_SPA_PM,
NFIT_SPA_DCR,
NFIT_SPA_BDW,
NFIT_SPA_VDISK,
NFIT_SPA_VCD,
NFIT_SPA_PDISK,
NFIT_SPA_PCD,
NFIT_DEV_BUS,
NFIT_UUID_MAX,
};
/*
* Region format interface codes are stored with the interface as the
* LSB and the function as the MSB.
*/
#define NFIT_FIC_BYTE cpu_to_le16(0x101) /* byte-addressable energy backed */
#define NFIT_FIC_BLK cpu_to_le16(0x201) /* block-addressable non-energy backed */
#define NFIT_FIC_BYTEN cpu_to_le16(0x301) /* byte-addressable non-energy backed */
enum {
NFIT_BLK_READ_FLUSH = 1,
NFIT_BLK_DCR_LATCH = 2,
NFIT_ARS_STATUS_DONE = 0,
NFIT_ARS_STATUS_BUSY = 1 << 16,
NFIT_ARS_STATUS_NONE = 2 << 16,
NFIT_ARS_STATUS_INTR = 3 << 16,
NFIT_ARS_START_BUSY = 6,
NFIT_ARS_CAP_NONE = 1,
NFIT_ARS_F_OVERFLOW = 1,
NFIT_ARS_TIMEOUT = 90,
};
enum nfit_root_notifiers {
NFIT_NOTIFY_UPDATE = 0x80,
NFIT_NOTIFY_UC_MEMORY_ERROR = 0x81,
};
enum nfit_dimm_notifiers {
NFIT_NOTIFY_DIMM_HEALTH = 0x81,
};
enum nfit_ars_state {
ARS_REQ_SHORT,
ARS_REQ_LONG,
ARS_FAILED,
};
struct nfit_spa {
struct list_head list;
struct nd_region *nd_region;
unsigned long ars_state;
u32 clear_err_unit;
u32 max_ars;
struct acpi_nfit_system_address spa[0];
};
struct nfit_dcr {
struct list_head list;
struct acpi_nfit_control_region dcr[0];
};
struct nfit_bdw {
struct list_head list;
struct acpi_nfit_data_region bdw[0];
};
struct nfit_idt {
struct list_head list;
struct acpi_nfit_interleave idt[0];
};
struct nfit_flush {
struct list_head list;
struct acpi_nfit_flush_address flush[0];
};
struct nfit_memdev {
struct list_head list;
struct acpi_nfit_memory_map memdev[0];
};
enum nfit_mem_flags {
NFIT_MEM_LSR,
NFIT_MEM_LSW,
NFIT_MEM_DIRTY,
NFIT_MEM_DIRTY_COUNT,
};
#define NFIT_DIMM_ID_LEN 22
/* assembled tables for a given dimm/memory-device */
struct nfit_mem {
struct nvdimm *nvdimm;
struct acpi_nfit_memory_map *memdev_dcr;
struct acpi_nfit_memory_map *memdev_pmem;
struct acpi_nfit_memory_map *memdev_bdw;
struct acpi_nfit_control_region *dcr;
struct acpi_nfit_data_region *bdw;
struct acpi_nfit_system_address *spa_dcr;
struct acpi_nfit_system_address *spa_bdw;
struct acpi_nfit_interleave *idt_dcr;
struct acpi_nfit_interleave *idt_bdw;
struct kernfs_node *flags_attr;
struct nfit_flush *nfit_flush;
struct list_head list;
struct acpi_device *adev;
struct acpi_nfit_desc *acpi_desc;
char id[NFIT_DIMM_ID_LEN+1];
struct resource *flush_wpq;
unsigned long dsm_mask;
unsigned long flags;
u32 dirty_shutdown;
int family;
};
enum scrub_flags {
ARS_BUSY,
ARS_CANCEL,
ARS_VALID,
ARS_POLL,
};
struct acpi_nfit_desc {
struct nvdimm_bus_descriptor nd_desc;
struct acpi_table_header acpi_header;
struct mutex init_mutex;
struct list_head memdevs;
struct list_head flushes;
struct list_head dimms;
struct list_head spas;
struct list_head dcrs;
struct list_head bdws;
struct list_head idts;
struct nvdimm_bus *nvdimm_bus;
struct device *dev;
struct nd_cmd_ars_status *ars_status;
struct nfit_spa *scrub_spa;
struct delayed_work dwork;
struct list_head list;
struct kernfs_node *scrub_count_state;
unsigned int max_ars;
unsigned int scrub_count;
unsigned int scrub_mode;
unsigned long scrub_flags;
unsigned long dimm_cmd_force_en;
unsigned long bus_cmd_force_en;
unsigned long bus_nfit_cmd_force_en;
unsigned int platform_cap;
unsigned int scrub_tmo;
int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
void *iobuf, u64 len, int rw);
};
enum scrub_mode {
HW_ERROR_SCRUB_OFF,
HW_ERROR_SCRUB_ON,
};
enum nd_blk_mmio_selector {
BDW,
DCR,
};
struct nd_blk_addr {
union {
void __iomem *base;
void *aperture;
};
};
struct nfit_blk {
struct nfit_blk_mmio {
struct nd_blk_addr addr;
u64 size;
u64 base_offset;
u32 line_size;
u32 num_lines;
u32 table_size;
struct acpi_nfit_interleave *idt;
struct acpi_nfit_system_address *spa;
} mmio[2];
struct nd_region *nd_region;
u64 bdw_offset; /* post interleave offset */
u64 stat_offset;
u64 cmd_offset;
u32 dimm_flags;
};
extern struct list_head acpi_descs;
extern struct mutex acpi_desc_lock;
int acpi_nfit_ars_rescan(struct acpi_nfit_desc *acpi_desc,
enum nfit_ars_state req_type);
#ifdef [31mCONFIG_X86_MCE[0m
void nfit_mce_register(void);
void nfit_mce_unregister(void);
#else
static inline void nfit_mce_register(void)
{
}
static inline void nfit_mce_unregister(void)
{
}
#endif
int nfit_spa_type(struct acpi_nfit_system_address *spa);
static inline struct acpi_nfit_memory_map *__to_nfit_memdev(
struct nfit_mem *nfit_mem)
{
if (nfit_mem->memdev_dcr)
return nfit_mem->memdev_dcr;
return nfit_mem->memdev_pmem;
}
static inline struct acpi_nfit_desc *to_acpi_desc(
struct nvdimm_bus_descriptor *nd_desc)
{
return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
}
#ifdef [31mCONFIG_PROVE_LOCKING[0m
static inline void nfit_device_lock(struct device *dev)
{
device_lock(dev);
mutex_lock(&dev->lockdep_mutex);
}
static inline void nfit_device_unlock(struct device *dev)
{
mutex_unlock(&dev->lockdep_mutex);
device_unlock(dev);
}
#else
static inline void nfit_device_lock(struct device *dev)
{
device_lock(dev);
}
static inline void nfit_device_unlock(struct device *dev)
{
device_unlock(dev);
}
#endif
const guid_t *to_nfit_uuid(enum nfit_uuids id);
int acpi_nfit_init(struct acpi_nfit_desc *acpi_desc, void *nfit, acpi_size sz);
void acpi_nfit_shutdown(void *data);
void __acpi_nfit_notify(struct device *dev, acpi_handle handle, u32 event);
void __acpi_nvdimm_notify(struct device *dev, u32 event);
int acpi_nfit_ctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
unsigned int cmd, void *buf, unsigned int buf_len, int *cmd_rc);
void acpi_nfit_desc_init(struct acpi_nfit_desc *acpi_desc, struct device *dev);
#endif /* __NFIT_H__ */