/* * 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 #include #include #include #include #include #include /* ACPI 6.1 */ #define UUID_NFIT_BUS "2f10e7a4-9e91-11e4-89d3-123b93f75cba" /* http://pmem.io/documents/NVDIMM_DSM_Interface_Example.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" #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) 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_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, }; enum nfit_dimm_notifiers { NFIT_NOTIFY_DIMM_HEALTH = 0x81, }; struct nfit_spa { struct list_head list; struct nd_region *nd_region; unsigned int ars_required:1; 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]; }; /* 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; struct resource *flush_wpq; unsigned long dsm_mask; int family; }; 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; size_t ars_status_size; struct work_struct work; struct list_head list; struct kernfs_node *scrub_count_state; unsigned int scrub_count; unsigned int scrub_mode; unsigned int cancel:1; unsigned int init_complete:1; unsigned long dimm_cmd_force_en; unsigned long bus_cmd_force_en; 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); #ifdef CONFIG_X86_MCE 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); } const u8 *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_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__ */