drivers/acpi/nfit.h

   1 /*
   2  * NVDIMM Firmware Interface Table - NFIT
   3  *
   4  * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of version 2 of the GNU General Public License as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  */
  15 #ifndef __NFIT_H__
  16 #define __NFIT_H__
  17 #include <linux/libnvdimm.h>
  18 #include <linux/types.h>
  19 #include <linux/uuid.h>
  20 #include <linux/acpi.h>
  21 #include <acpi/acuuid.h>
  22
  23 #define UUID_NFIT_BUS "2f10e7a4-9e91-11e4-89d3-123b93f75cba"
  24 #define UUID_NFIT_DIMM "4309ac30-0d11-11e4-9191-0800200c9a66"
  25
  26 enum nfit_uuids {
  27         NFIT_SPA_VOLATILE,
  28         NFIT_SPA_PM,
  29         NFIT_SPA_DCR,
  30         NFIT_SPA_BDW,
  31         NFIT_SPA_VDISK,
  32         NFIT_SPA_VCD,
  33         NFIT_SPA_PDISK,
  34         NFIT_SPA_PCD,
  35         NFIT_DEV_BUS,
  36         NFIT_DEV_DIMM,
  37         NFIT_UUID_MAX,
  38 };
  39
  40 struct nfit_spa {
  41         struct acpi_nfit_system_address *spa;
  42         struct list_head list;
  43 };
  44
  45 struct nfit_dcr {
  46         struct acpi_nfit_control_region *dcr;
  47         struct list_head list;
  48 };
  49
  50 struct nfit_bdw {
  51         struct acpi_nfit_data_region *bdw;
  52         struct list_head list;
  53 };
  54
  55 struct nfit_memdev {
  56         struct acpi_nfit_memory_map *memdev;
  57         struct list_head list;
  58 };
  59
  60 /* assembled tables for a given dimm/memory-device */
  61 struct nfit_mem {
  62         struct acpi_nfit_memory_map *memdev_dcr;
  63         struct acpi_nfit_memory_map *memdev_pmem;
  64         struct acpi_nfit_control_region *dcr;
  65         struct acpi_nfit_data_region *bdw;
  66         struct acpi_nfit_system_address *spa_dcr;
  67         struct acpi_nfit_system_address *spa_bdw;
  68         struct list_head list;
  69 };
  70
  71 struct acpi_nfit_desc {
  72         struct nvdimm_bus_descriptor nd_desc;
  73         struct acpi_table_nfit *nfit;
  74         struct list_head memdevs;
  75         struct list_head dimms;
  76         struct list_head spas;
  77         struct list_head dcrs;
  78         struct list_head bdws;
  79         struct nvdimm_bus *nvdimm_bus;
  80         struct device *dev;
  81 };
  82
  83 static inline struct acpi_nfit_memory_map *__to_nfit_memdev(
  84                 struct nfit_mem *nfit_mem)
  85 {
  86         if (nfit_mem->memdev_dcr)
  87                 return nfit_mem->memdev_dcr;
  88         return nfit_mem->memdev_pmem;
  89 }
  90 #endif /* __NFIT_H__ */