1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #ifndef _ASM_X86_UV_BIOS_H
3 #define _ASM_X86_UV_BIOS_H
6 * UV BIOS layer definitions.
8 * (C) Copyright 2020 Hewlett Packard Enterprise Development LP
9 * Copyright (C) 2007-2017 Silicon Graphics, Inc. All rights reserved.
13 #include <linux/rtc.h>
16 * Values for the BIOS calls. It is passed as the first * argument in the
17 * BIOS call. Passing any other value in the first argument will result
18 * in a BIOS_STATUS_UNIMPLEMENTED return status.
24 UV_BIOS_WATCHLIST_ALLOC,
25 UV_BIOS_WATCHLIST_FREE,
27 UV_BIOS_GET_PARTITION_ADDR,
28 UV_BIOS_SET_LEGACY_VGA_TARGET
31 #define UV_BIOS_EXTRA 0x10000
32 #define UV_BIOS_GET_PCI_TOPOLOGY 0x10001
33 #define UV_BIOS_GET_GEOINFO 0x10003
35 #define UV_BIOS_EXTRA_OP_MEM_COPYIN 0x1000
36 #define UV_BIOS_EXTRA_OP_MEM_COPYOUT 0x2000
37 #define UV_BIOS_EXTRA_OP_MASK 0x0fff
38 #define UV_BIOS_EXTRA_GET_HEAPSIZE 1
39 #define UV_BIOS_EXTRA_INSTALL_HEAP 2
40 #define UV_BIOS_EXTRA_MASTER_NASID 3
41 #define UV_BIOS_EXTRA_OBJECT_COUNT (10|UV_BIOS_EXTRA_OP_MEM_COPYOUT)
42 #define UV_BIOS_EXTRA_ENUM_OBJECTS (12|UV_BIOS_EXTRA_OP_MEM_COPYOUT)
43 #define UV_BIOS_EXTRA_ENUM_PORTS (13|UV_BIOS_EXTRA_OP_MEM_COPYOUT)
46 * Status values returned from a BIOS call.
49 BIOS_STATUS_MORE_PASSES = 1,
50 BIOS_STATUS_SUCCESS = 0,
51 BIOS_STATUS_UNIMPLEMENTED = -ENOSYS,
52 BIOS_STATUS_EINVAL = -EINVAL,
53 BIOS_STATUS_UNAVAIL = -EBUSY,
54 BIOS_STATUS_ABORT = -EINTR,
57 /* Address map parameters */
58 struct uv_gam_parameters {
61 u8 mmr_shift; /* Convert PNode to MMR space offset */
62 u8 gru_shift; /* Convert PNode to GRU space offset */
63 u8 gpa_shift; /* Size of offset field in GRU phys addr */
67 /* UV_TABLE_GAM_RANGE_ENTRY values */
68 #define UV_GAM_RANGE_TYPE_UNUSED 0 /* End of table */
69 #define UV_GAM_RANGE_TYPE_RAM 1 /* Normal RAM */
70 #define UV_GAM_RANGE_TYPE_NVRAM 2 /* Non-volatile memory */
71 #define UV_GAM_RANGE_TYPE_NV_WINDOW 3 /* NVMDIMM block window */
72 #define UV_GAM_RANGE_TYPE_NV_MAILBOX 4 /* NVMDIMM mailbox */
73 #define UV_GAM_RANGE_TYPE_HOLE 5 /* Unused address range */
74 #define UV_GAM_RANGE_TYPE_MAX 6
76 /* The structure stores PA bits 56:26, for 64MB granularity */
77 #define UV_GAM_RANGE_SHFT 26 /* 64MB */
79 struct uv_gam_range_entry {
80 char type; /* Entry type: GAM_RANGE_TYPE_UNUSED, etc. */
82 u16 nasid; /* HNasid */
83 u16 sockid; /* Socket ID, high bits of APIC ID */
84 u16 pnode; /* Index to MMR and GRU spaces */
86 u32 limit; /* PA bits 56:26 (UV_GAM_RANGE_SHFT) */
89 #define UV_AT_SIZE 8 /* 7 character arch type + NULL char */
90 struct uv_arch_type_entry {
91 char archtype[UV_AT_SIZE];
94 #define UV_SYSTAB_SIG "UVST"
95 #define UV_SYSTAB_VERSION_1 1 /* UV2/3 BIOS version */
96 #define UV_SYSTAB_VERSION_UV4 0x400 /* UV4 BIOS base version */
97 #define UV_SYSTAB_VERSION_UV4_1 0x401 /* + gpa_shift */
98 #define UV_SYSTAB_VERSION_UV4_2 0x402 /* + TYPE_NVRAM/WINDOW/MBOX */
99 #define UV_SYSTAB_VERSION_UV4_3 0x403 /* - GAM Range PXM Value */
100 #define UV_SYSTAB_VERSION_UV4_LATEST UV_SYSTAB_VERSION_UV4_3
102 #define UV_SYSTAB_VERSION_UV5 0x500 /* UV5 GAM base version */
103 #define UV_SYSTAB_VERSION_UV5_LATEST UV_SYSTAB_VERSION_UV5
105 #define UV_SYSTAB_TYPE_UNUSED 0 /* End of table (offset == 0) */
106 #define UV_SYSTAB_TYPE_GAM_PARAMS 1 /* GAM PARAM conversions */
107 #define UV_SYSTAB_TYPE_GAM_RNG_TBL 2 /* GAM entry table */
108 #define UV_SYSTAB_TYPE_ARCH_TYPE 3 /* UV arch type */
109 #define UV_SYSTAB_TYPE_MAX 4
112 * The UV system table describes specific firmware
113 * capabilities available to the Linux kernel at runtime.
116 char signature[4]; /* must be UV_SYSTAB_SIG */
117 u32 revision; /* distinguish different firmware revs */
118 u64 function; /* BIOS runtime callback function ptr */
119 u32 size; /* systab size (starting with _VERSION_UV4) */
121 u32 type:8; /* type of entry */
122 u32 offset:24; /* byte offset from struct start to entry */
123 } entry[1]; /* additional entries follow */
125 extern struct uv_systab *uv_systab;
127 #define UV_BIOS_MAXSTRING 128
128 struct uv_bios_hub_info {
132 unsigned long long this_part:1;
133 unsigned long long is_shared:1;
134 unsigned long long is_disabled:1;
137 unsigned long long flags;
138 unsigned long long reserved;
141 char name[UV_BIOS_MAXSTRING];
142 char location[UV_BIOS_MAXSTRING];
146 struct uv_bios_port_info {
148 unsigned int conn_id;
149 unsigned int conn_port;
152 /* (... end of definitions from UV BIOS ...) */
155 BIOS_FREQ_BASE_PLATFORM = 0,
156 BIOS_FREQ_BASE_INTERVAL_TIMER = 1,
157 BIOS_FREQ_BASE_REALTIME_CLOCK = 2
160 union partition_info_u {
171 UV_MEMPROT_RESTRICT_ACCESS,
172 UV_MEMPROT_ALLOW_AMO,
176 extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *, long *);
177 extern s64 uv_bios_freq_base(u64, u64 *);
178 extern int uv_bios_mq_watchlist_alloc(unsigned long, unsigned int,
180 extern int uv_bios_mq_watchlist_free(int, int);
181 extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect);
182 extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *);
183 extern int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus);
185 extern s64 uv_bios_get_master_nasid(u64 sz, u64 *nasid);
186 extern s64 uv_bios_get_heapsize(u64 nasid, u64 sz, u64 *heap_sz);
187 extern s64 uv_bios_install_heap(u64 nasid, u64 sz, u64 *heap);
188 extern s64 uv_bios_obj_count(u64 nasid, u64 sz, u64 *objcnt);
189 extern s64 uv_bios_enum_objs(u64 nasid, u64 sz, u64 *objbuf);
190 extern s64 uv_bios_enum_ports(u64 nasid, u64 obj_id, u64 sz, u64 *portbuf);
191 extern s64 uv_bios_get_geoinfo(u64 nasid, u64 sz, u64 *geo);
192 extern s64 uv_bios_get_pci_topology(u64 sz, u64 *buf);
194 extern int uv_bios_init(void);
195 extern unsigned long get_uv_systab_phys(bool msg);
197 extern unsigned long sn_rtc_cycles_per_second;
199 extern long sn_partition_id;
200 extern long sn_coherency_id;
201 extern long sn_region_size;
202 extern long system_serial_number;
203 extern ssize_t uv_get_archtype(char *buf, int len);
204 extern int uv_get_hubless_system(void);
206 extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */
209 * EFI runtime lock; cf. firmware/efi/runtime-wrappers.c for details
211 extern struct semaphore __efi_uv_runtime_lock;
213 #endif /* _ASM_X86_UV_BIOS_H */