159 lines
3.8 KiB
C
159 lines
3.8 KiB
C
/*
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* NVDIMM Firmware Interface Table - NFIT
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*
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* Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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#ifndef __NFIT_H__
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#define __NFIT_H__
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#include <linux/libnvdimm.h>
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#include <linux/types.h>
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#include <linux/uuid.h>
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#include <linux/acpi.h>
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#include <acpi/acuuid.h>
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#define UUID_NFIT_BUS "2f10e7a4-9e91-11e4-89d3-123b93f75cba"
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#define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66"
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#define ACPI_NFIT_MEM_FAILED_MASK (ACPI_NFIT_MEM_SAVE_FAILED \
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| ACPI_NFIT_MEM_RESTORE_FAILED | ACPI_NFIT_MEM_FLUSH_FAILED \
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| ACPI_NFIT_MEM_ARMED)
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enum nfit_uuids {
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NFIT_SPA_VOLATILE,
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NFIT_SPA_PM,
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NFIT_SPA_DCR,
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NFIT_SPA_BDW,
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NFIT_SPA_VDISK,
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NFIT_SPA_VCD,
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NFIT_SPA_PDISK,
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NFIT_SPA_PCD,
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NFIT_DEV_BUS,
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NFIT_DEV_DIMM,
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NFIT_UUID_MAX,
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};
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struct nfit_spa {
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struct acpi_nfit_system_address *spa;
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struct list_head list;
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};
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struct nfit_dcr {
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struct acpi_nfit_control_region *dcr;
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struct list_head list;
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};
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struct nfit_bdw {
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struct acpi_nfit_data_region *bdw;
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struct list_head list;
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};
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struct nfit_idt {
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struct acpi_nfit_interleave *idt;
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struct list_head list;
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};
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struct nfit_memdev {
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struct acpi_nfit_memory_map *memdev;
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struct list_head list;
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};
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/* assembled tables for a given dimm/memory-device */
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struct nfit_mem {
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struct nvdimm *nvdimm;
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struct acpi_nfit_memory_map *memdev_dcr;
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struct acpi_nfit_memory_map *memdev_pmem;
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struct acpi_nfit_memory_map *memdev_bdw;
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struct acpi_nfit_control_region *dcr;
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struct acpi_nfit_data_region *bdw;
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struct acpi_nfit_system_address *spa_dcr;
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struct acpi_nfit_system_address *spa_bdw;
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struct acpi_nfit_interleave *idt_dcr;
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struct acpi_nfit_interleave *idt_bdw;
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struct list_head list;
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struct acpi_device *adev;
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unsigned long dsm_mask;
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};
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struct acpi_nfit_desc {
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struct nvdimm_bus_descriptor nd_desc;
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struct acpi_table_nfit *nfit;
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struct mutex spa_map_mutex;
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struct list_head spa_maps;
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struct list_head memdevs;
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struct list_head dimms;
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struct list_head spas;
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struct list_head dcrs;
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struct list_head bdws;
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struct list_head idts;
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struct nvdimm_bus *nvdimm_bus;
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struct device *dev;
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unsigned long dimm_dsm_force_en;
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int (*blk_do_io)(struct nd_blk_region *ndbr, resource_size_t dpa,
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void *iobuf, u64 len, int rw);
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};
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enum nd_blk_mmio_selector {
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BDW,
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DCR,
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};
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struct nfit_blk {
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struct nfit_blk_mmio {
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union {
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void __iomem *base;
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void *aperture;
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};
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u64 size;
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u64 base_offset;
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u32 line_size;
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u32 num_lines;
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u32 table_size;
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struct acpi_nfit_interleave *idt;
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struct acpi_nfit_system_address *spa;
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} mmio[2];
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struct nd_region *nd_region;
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u64 bdw_offset; /* post interleave offset */
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u64 stat_offset;
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u64 cmd_offset;
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};
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struct nfit_spa_mapping {
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struct acpi_nfit_desc *acpi_desc;
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struct acpi_nfit_system_address *spa;
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struct list_head list;
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struct kref kref;
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void __iomem *iomem;
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};
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static inline struct nfit_spa_mapping *to_spa_map(struct kref *kref)
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{
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return container_of(kref, struct nfit_spa_mapping, kref);
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}
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static inline struct acpi_nfit_memory_map *__to_nfit_memdev(
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struct nfit_mem *nfit_mem)
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{
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if (nfit_mem->memdev_dcr)
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return nfit_mem->memdev_dcr;
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return nfit_mem->memdev_pmem;
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}
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static inline struct acpi_nfit_desc *to_acpi_desc(
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struct nvdimm_bus_descriptor *nd_desc)
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{
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return container_of(nd_desc, struct acpi_nfit_desc, nd_desc);
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}
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const u8 *to_nfit_uuid(enum nfit_uuids id);
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int acpi_nfit_init(struct acpi_nfit_desc *nfit, acpi_size sz);
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extern const struct attribute_group *acpi_nfit_attribute_groups[];
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#endif /* __NFIT_H__ */
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