mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 08:02:30 +00:00
6b577c9d77
When support for _FIT was added, the code presumed that the data returned by the _FIT method is identical to the NFIT table, which starts with an acpi_table_header. However, the _FIT is defined to return a data in the format of a series of NFIT type structure entries and as a method, has an acpi_object header rather tahn an acpi_table_header. To address the differences, explicitly save the acpi_table_header from the NFIT, since it is accessible through /sys, and change the nfit pointer in the acpi_desc structure to point to the table entries rather than the headers. Reported-by: Jeff Moyer (jmoyer@redhat.com> Signed-off-by: Linda Knippers <linda.knippers@hpe.com> Acked-by: Vishal Verma <vishal.l.verma@intel.com> [vishal: fix up unit test for new header assumptions] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
186 lines
4.3 KiB
C
186 lines
4.3 KiB
C
/*
|
|
* NVDIMM Firmware Interface Table - NFIT
|
|
*
|
|
* Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*/
|
|
#ifndef __NFIT_H__
|
|
#define __NFIT_H__
|
|
#include <linux/libnvdimm.h>
|
|
#include <linux/types.h>
|
|
#include <linux/uuid.h>
|
|
#include <linux/acpi.h>
|
|
#include <acpi/acuuid.h>
|
|
|
|
#define UUID_NFIT_BUS "2f10e7a4-9e91-11e4-89d3-123b93f75cba"
|
|
#define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66"
|
|
#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)
|
|
|
|
enum nfit_uuids {
|
|
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_DEV_DIMM,
|
|
NFIT_UUID_MAX,
|
|
};
|
|
|
|
enum {
|
|
ND_BLK_READ_FLUSH = 1,
|
|
ND_BLK_DCR_LATCH = 2,
|
|
};
|
|
|
|
struct nfit_spa {
|
|
struct acpi_nfit_system_address *spa;
|
|
struct list_head list;
|
|
int is_registered;
|
|
};
|
|
|
|
struct nfit_dcr {
|
|
struct acpi_nfit_control_region *dcr;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct nfit_bdw {
|
|
struct acpi_nfit_data_region *bdw;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct nfit_idt {
|
|
struct acpi_nfit_interleave *idt;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct nfit_flush {
|
|
struct acpi_nfit_flush_address *flush;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct nfit_memdev {
|
|
struct acpi_nfit_memory_map *memdev;
|
|
struct list_head list;
|
|
};
|
|
|
|
/* 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 nfit_flush *nfit_flush;
|
|
struct list_head list;
|
|
struct acpi_device *adev;
|
|
unsigned long dsm_mask;
|
|
};
|
|
|
|
struct acpi_nfit_desc {
|
|
struct nvdimm_bus_descriptor nd_desc;
|
|
struct acpi_table_header acpi_header;
|
|
struct acpi_nfit_header *nfit;
|
|
struct mutex spa_map_mutex;
|
|
struct mutex init_mutex;
|
|
struct list_head spa_maps;
|
|
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;
|
|
unsigned long dimm_dsm_force_en;
|
|
unsigned long bus_dsm_force_en;
|
|
int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
|
|
void *iobuf, u64 len, int rw);
|
|
};
|
|
|
|
enum nd_blk_mmio_selector {
|
|
BDW,
|
|
DCR,
|
|
};
|
|
|
|
struct nd_blk_addr {
|
|
union {
|
|
void __iomem *base;
|
|
void __pmem *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;
|
|
void __iomem *nvdimm_flush;
|
|
u32 dimm_flags;
|
|
};
|
|
|
|
enum spa_map_type {
|
|
SPA_MAP_CONTROL,
|
|
SPA_MAP_APERTURE,
|
|
};
|
|
|
|
struct nfit_spa_mapping {
|
|
struct acpi_nfit_desc *acpi_desc;
|
|
struct acpi_nfit_system_address *spa;
|
|
struct list_head list;
|
|
struct kref kref;
|
|
enum spa_map_type type;
|
|
struct nd_blk_addr addr;
|
|
};
|
|
|
|
static inline struct nfit_spa_mapping *to_spa_map(struct kref *kref)
|
|
{
|
|
return container_of(kref, struct nfit_spa_mapping, kref);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
const u8 *to_nfit_uuid(enum nfit_uuids id);
|
|
int acpi_nfit_init(struct acpi_nfit_desc *nfit, acpi_size sz);
|
|
extern const struct attribute_group *acpi_nfit_attribute_groups[];
|
|
#endif /* __NFIT_H__ */
|