1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | #ifndef _ASM_X86_UV_BIOS_H |
3 | #define _ASM_X86_UV_BIOS_H |
4 | |
5 | /* |
6 | * UV BIOS layer definitions. |
7 | * |
8 | * (C) Copyright 2020 Hewlett Packard Enterprise Development LP |
9 | * Copyright (C) 2007-2017 Silicon Graphics, Inc. All rights reserved. |
10 | * Copyright (c) Russ Anderson <rja@sgi.com> |
11 | */ |
12 | |
13 | #include <linux/efi.h> |
14 | #include <linux/rtc.h> |
15 | |
16 | /* |
17 | * Values for the BIOS calls. It is passed as the first * argument in the |
18 | * BIOS call. Passing any other value in the first argument will result |
19 | * in a BIOS_STATUS_UNIMPLEMENTED return status. |
20 | */ |
21 | enum uv_bios_cmd { |
22 | UV_BIOS_COMMON, |
23 | UV_BIOS_GET_SN_INFO, |
24 | UV_BIOS_FREQ_BASE, |
25 | UV_BIOS_WATCHLIST_ALLOC, |
26 | UV_BIOS_WATCHLIST_FREE, |
27 | UV_BIOS_MEMPROTECT, |
28 | UV_BIOS_GET_PARTITION_ADDR, |
29 | UV_BIOS_SET_LEGACY_VGA_TARGET |
30 | }; |
31 | |
32 | #define 0x10000 |
33 | #define UV_BIOS_GET_PCI_TOPOLOGY 0x10001 |
34 | #define UV_BIOS_GET_GEOINFO 0x10003 |
35 | |
36 | #define 0x1000 |
37 | #define 0x2000 |
38 | #define 0x0fff |
39 | #define 1 |
40 | #define 2 |
41 | #define 3 |
42 | #define (10|UV_BIOS_EXTRA_OP_MEM_COPYOUT) |
43 | #define (12|UV_BIOS_EXTRA_OP_MEM_COPYOUT) |
44 | #define (13|UV_BIOS_EXTRA_OP_MEM_COPYOUT) |
45 | |
46 | /* |
47 | * Status values returned from a BIOS call. |
48 | */ |
49 | enum { |
50 | BIOS_STATUS_MORE_PASSES = 1, |
51 | BIOS_STATUS_SUCCESS = 0, |
52 | BIOS_STATUS_UNIMPLEMENTED = -ENOSYS, |
53 | BIOS_STATUS_EINVAL = -EINVAL, |
54 | BIOS_STATUS_UNAVAIL = -EBUSY, |
55 | BIOS_STATUS_ABORT = -EINTR, |
56 | }; |
57 | |
58 | /* Address map parameters */ |
59 | struct uv_gam_parameters { |
60 | u64 mmr_base; |
61 | u64 gru_base; |
62 | u8 mmr_shift; /* Convert PNode to MMR space offset */ |
63 | u8 gru_shift; /* Convert PNode to GRU space offset */ |
64 | u8 gpa_shift; /* Size of offset field in GRU phys addr */ |
65 | u8 unused1; |
66 | }; |
67 | |
68 | /* UV_TABLE_GAM_RANGE_ENTRY values */ |
69 | #define UV_GAM_RANGE_TYPE_UNUSED 0 /* End of table */ |
70 | #define UV_GAM_RANGE_TYPE_RAM 1 /* Normal RAM */ |
71 | #define UV_GAM_RANGE_TYPE_NVRAM 2 /* Non-volatile memory */ |
72 | #define UV_GAM_RANGE_TYPE_NV_WINDOW 3 /* NVMDIMM block window */ |
73 | #define UV_GAM_RANGE_TYPE_NV_MAILBOX 4 /* NVMDIMM mailbox */ |
74 | #define UV_GAM_RANGE_TYPE_HOLE 5 /* Unused address range */ |
75 | #define UV_GAM_RANGE_TYPE_MAX 6 |
76 | |
77 | /* The structure stores PA bits 56:26, for 64MB granularity */ |
78 | #define UV_GAM_RANGE_SHFT 26 /* 64MB */ |
79 | |
80 | struct uv_gam_range_entry { |
81 | char type; /* Entry type: GAM_RANGE_TYPE_UNUSED, etc. */ |
82 | char unused1; |
83 | u16 nasid; /* HNasid */ |
84 | u16 sockid; /* Socket ID, high bits of APIC ID */ |
85 | u16 pnode; /* Index to MMR and GRU spaces */ |
86 | u32 unused2; |
87 | u32 limit; /* PA bits 56:26 (UV_GAM_RANGE_SHFT) */ |
88 | }; |
89 | |
90 | #define UV_AT_SIZE 8 /* 7 character arch type + NULL char */ |
91 | struct uv_arch_type_entry { |
92 | char archtype[UV_AT_SIZE]; |
93 | }; |
94 | |
95 | #define UV_SYSTAB_SIG "UVST" |
96 | #define UV_SYSTAB_VERSION_1 1 /* UV2/3 BIOS version */ |
97 | #define UV_SYSTAB_VERSION_UV4 0x400 /* UV4 BIOS base version */ |
98 | #define UV_SYSTAB_VERSION_UV4_1 0x401 /* + gpa_shift */ |
99 | #define UV_SYSTAB_VERSION_UV4_2 0x402 /* + TYPE_NVRAM/WINDOW/MBOX */ |
100 | #define UV_SYSTAB_VERSION_UV4_3 0x403 /* - GAM Range PXM Value */ |
101 | #define UV_SYSTAB_VERSION_UV4_LATEST UV_SYSTAB_VERSION_UV4_3 |
102 | |
103 | #define UV_SYSTAB_VERSION_UV5 0x500 /* UV5 GAM base version */ |
104 | #define UV_SYSTAB_VERSION_UV5_LATEST UV_SYSTAB_VERSION_UV5 |
105 | |
106 | #define UV_SYSTAB_TYPE_UNUSED 0 /* End of table (offset == 0) */ |
107 | #define UV_SYSTAB_TYPE_GAM_PARAMS 1 /* GAM PARAM conversions */ |
108 | #define UV_SYSTAB_TYPE_GAM_RNG_TBL 2 /* GAM entry table */ |
109 | #define UV_SYSTAB_TYPE_ARCH_TYPE 3 /* UV arch type */ |
110 | #define UV_SYSTAB_TYPE_MAX 4 |
111 | |
112 | /* |
113 | * The UV system table describes specific firmware |
114 | * capabilities available to the Linux kernel at runtime. |
115 | */ |
116 | struct uv_systab { |
117 | char signature[4]; /* must be UV_SYSTAB_SIG */ |
118 | u32 revision; /* distinguish different firmware revs */ |
119 | u64 (__efiapi *function)(enum uv_bios_cmd, ...); |
120 | /* BIOS runtime callback function ptr */ |
121 | u32 size; /* systab size (starting with _VERSION_UV4) */ |
122 | struct { |
123 | u32 type:8; /* type of entry */ |
124 | u32 offset:24; /* byte offset from struct start to entry */ |
125 | } entry[1]; /* additional entries follow */ |
126 | }; |
127 | extern struct uv_systab *uv_systab; |
128 | |
129 | #define UV_BIOS_MAXSTRING 128 |
130 | struct uv_bios_hub_info { |
131 | unsigned int id; |
132 | union { |
133 | struct { |
134 | unsigned long long this_part:1; |
135 | unsigned long long is_shared:1; |
136 | unsigned long long is_disabled:1; |
137 | } fields; |
138 | struct { |
139 | unsigned long long flags; |
140 | unsigned long long reserved; |
141 | } b; |
142 | } f; |
143 | char name[UV_BIOS_MAXSTRING]; |
144 | char location[UV_BIOS_MAXSTRING]; |
145 | unsigned int ports; |
146 | }; |
147 | |
148 | struct uv_bios_port_info { |
149 | unsigned int port; |
150 | unsigned int conn_id; |
151 | unsigned int conn_port; |
152 | }; |
153 | |
154 | /* (... end of definitions from UV BIOS ...) */ |
155 | |
156 | enum { |
157 | BIOS_FREQ_BASE_PLATFORM = 0, |
158 | BIOS_FREQ_BASE_INTERVAL_TIMER = 1, |
159 | BIOS_FREQ_BASE_REALTIME_CLOCK = 2 |
160 | }; |
161 | |
162 | union partition_info_u { |
163 | u64 val; |
164 | struct { |
165 | u64 hub_version : 8, |
166 | partition_id : 16, |
167 | coherence_id : 16, |
168 | region_size : 24; |
169 | }; |
170 | }; |
171 | |
172 | enum uv_memprotect { |
173 | UV_MEMPROT_RESTRICT_ACCESS, |
174 | UV_MEMPROT_ALLOW_AMO, |
175 | UV_MEMPROT_ALLOW_RW |
176 | }; |
177 | |
178 | extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *, long *); |
179 | extern s64 uv_bios_freq_base(u64, u64 *); |
180 | extern int uv_bios_mq_watchlist_alloc(unsigned long, unsigned int, |
181 | unsigned long *); |
182 | extern int uv_bios_mq_watchlist_free(int, int); |
183 | extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect); |
184 | extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *); |
185 | extern int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus); |
186 | |
187 | extern s64 uv_bios_get_master_nasid(u64 sz, u64 *nasid); |
188 | extern s64 uv_bios_get_heapsize(u64 nasid, u64 sz, u64 *heap_sz); |
189 | extern s64 uv_bios_install_heap(u64 nasid, u64 sz, u64 *heap); |
190 | extern s64 uv_bios_obj_count(u64 nasid, u64 sz, u64 *objcnt); |
191 | extern s64 uv_bios_enum_objs(u64 nasid, u64 sz, u64 *objbuf); |
192 | extern s64 uv_bios_enum_ports(u64 nasid, u64 obj_id, u64 sz, u64 *portbuf); |
193 | extern s64 uv_bios_get_geoinfo(u64 nasid, u64 sz, u64 *geo); |
194 | extern s64 uv_bios_get_pci_topology(u64 sz, u64 *buf); |
195 | |
196 | extern int uv_bios_init(void); |
197 | extern unsigned long get_uv_systab_phys(bool msg); |
198 | |
199 | extern unsigned long sn_rtc_cycles_per_second; |
200 | extern int uv_type; |
201 | extern long sn_partition_id; |
202 | extern long sn_coherency_id; |
203 | extern long sn_region_size; |
204 | extern long system_serial_number; |
205 | extern ssize_t uv_get_archtype(char *buf, int len); |
206 | extern int uv_get_hubless_system(void); |
207 | |
208 | extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */ |
209 | |
210 | /* |
211 | * EFI runtime lock; cf. firmware/efi/runtime-wrappers.c for details |
212 | */ |
213 | extern struct semaphore __efi_uv_runtime_lock; |
214 | |
215 | #endif /* _ASM_X86_UV_BIOS_H */ |
216 | |