e38abdab44
__efi_call_virt() exists as an alternative for efi_call_virt() for the sole reason that ResetSystem() returns void, and so we cannot use a call to it in the RHS of an assignment. Given that there is only a single user, let's drop the macro, and expand it into the caller. That way, the remaining macro can be tightened somewhat in terms of type safety too. Note that the use of typeof() on the runtime service invocation does not result in an actual call being made, but it does require a few pointer types to be fixed up and converted into the proper function pointer prototypes. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
215 lines
6.5 KiB
C
215 lines
6.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef _ASM_X86_UV_BIOS_H
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#define _ASM_X86_UV_BIOS_H
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/*
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* UV BIOS layer definitions.
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*
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* (C) Copyright 2020 Hewlett Packard Enterprise Development LP
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* Copyright (C) 2007-2017 Silicon Graphics, Inc. All rights reserved.
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* Copyright (c) Russ Anderson <rja@sgi.com>
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*/
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#include <linux/efi.h>
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#include <linux/rtc.h>
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/*
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* Values for the BIOS calls. It is passed as the first * argument in the
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* BIOS call. Passing any other value in the first argument will result
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* in a BIOS_STATUS_UNIMPLEMENTED return status.
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*/
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enum uv_bios_cmd {
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UV_BIOS_COMMON,
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UV_BIOS_GET_SN_INFO,
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UV_BIOS_FREQ_BASE,
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UV_BIOS_WATCHLIST_ALLOC,
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UV_BIOS_WATCHLIST_FREE,
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UV_BIOS_MEMPROTECT,
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UV_BIOS_GET_PARTITION_ADDR,
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UV_BIOS_SET_LEGACY_VGA_TARGET
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};
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#define UV_BIOS_EXTRA 0x10000
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#define UV_BIOS_GET_PCI_TOPOLOGY 0x10001
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#define UV_BIOS_GET_GEOINFO 0x10003
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#define UV_BIOS_EXTRA_OP_MEM_COPYIN 0x1000
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#define UV_BIOS_EXTRA_OP_MEM_COPYOUT 0x2000
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#define UV_BIOS_EXTRA_OP_MASK 0x0fff
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#define UV_BIOS_EXTRA_GET_HEAPSIZE 1
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#define UV_BIOS_EXTRA_INSTALL_HEAP 2
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#define UV_BIOS_EXTRA_MASTER_NASID 3
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#define UV_BIOS_EXTRA_OBJECT_COUNT (10|UV_BIOS_EXTRA_OP_MEM_COPYOUT)
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#define UV_BIOS_EXTRA_ENUM_OBJECTS (12|UV_BIOS_EXTRA_OP_MEM_COPYOUT)
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#define UV_BIOS_EXTRA_ENUM_PORTS (13|UV_BIOS_EXTRA_OP_MEM_COPYOUT)
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/*
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* Status values returned from a BIOS call.
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*/
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enum {
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BIOS_STATUS_MORE_PASSES = 1,
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BIOS_STATUS_SUCCESS = 0,
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BIOS_STATUS_UNIMPLEMENTED = -ENOSYS,
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BIOS_STATUS_EINVAL = -EINVAL,
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BIOS_STATUS_UNAVAIL = -EBUSY,
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BIOS_STATUS_ABORT = -EINTR,
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};
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/* Address map parameters */
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struct uv_gam_parameters {
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u64 mmr_base;
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u64 gru_base;
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u8 mmr_shift; /* Convert PNode to MMR space offset */
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u8 gru_shift; /* Convert PNode to GRU space offset */
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u8 gpa_shift; /* Size of offset field in GRU phys addr */
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u8 unused1;
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};
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/* UV_TABLE_GAM_RANGE_ENTRY values */
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#define UV_GAM_RANGE_TYPE_UNUSED 0 /* End of table */
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#define UV_GAM_RANGE_TYPE_RAM 1 /* Normal RAM */
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#define UV_GAM_RANGE_TYPE_NVRAM 2 /* Non-volatile memory */
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#define UV_GAM_RANGE_TYPE_NV_WINDOW 3 /* NVMDIMM block window */
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#define UV_GAM_RANGE_TYPE_NV_MAILBOX 4 /* NVMDIMM mailbox */
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#define UV_GAM_RANGE_TYPE_HOLE 5 /* Unused address range */
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#define UV_GAM_RANGE_TYPE_MAX 6
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/* The structure stores PA bits 56:26, for 64MB granularity */
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#define UV_GAM_RANGE_SHFT 26 /* 64MB */
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struct uv_gam_range_entry {
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char type; /* Entry type: GAM_RANGE_TYPE_UNUSED, etc. */
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char unused1;
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u16 nasid; /* HNasid */
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u16 sockid; /* Socket ID, high bits of APIC ID */
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u16 pnode; /* Index to MMR and GRU spaces */
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u32 unused2;
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u32 limit; /* PA bits 56:26 (UV_GAM_RANGE_SHFT) */
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};
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#define UV_AT_SIZE 8 /* 7 character arch type + NULL char */
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struct uv_arch_type_entry {
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char archtype[UV_AT_SIZE];
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};
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#define UV_SYSTAB_SIG "UVST"
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#define UV_SYSTAB_VERSION_1 1 /* UV2/3 BIOS version */
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#define UV_SYSTAB_VERSION_UV4 0x400 /* UV4 BIOS base version */
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#define UV_SYSTAB_VERSION_UV4_1 0x401 /* + gpa_shift */
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#define UV_SYSTAB_VERSION_UV4_2 0x402 /* + TYPE_NVRAM/WINDOW/MBOX */
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#define UV_SYSTAB_VERSION_UV4_3 0x403 /* - GAM Range PXM Value */
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#define UV_SYSTAB_VERSION_UV4_LATEST UV_SYSTAB_VERSION_UV4_3
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#define UV_SYSTAB_VERSION_UV5 0x500 /* UV5 GAM base version */
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#define UV_SYSTAB_VERSION_UV5_LATEST UV_SYSTAB_VERSION_UV5
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#define UV_SYSTAB_TYPE_UNUSED 0 /* End of table (offset == 0) */
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#define UV_SYSTAB_TYPE_GAM_PARAMS 1 /* GAM PARAM conversions */
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#define UV_SYSTAB_TYPE_GAM_RNG_TBL 2 /* GAM entry table */
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#define UV_SYSTAB_TYPE_ARCH_TYPE 3 /* UV arch type */
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#define UV_SYSTAB_TYPE_MAX 4
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/*
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* The UV system table describes specific firmware
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* capabilities available to the Linux kernel at runtime.
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*/
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struct uv_systab {
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char signature[4]; /* must be UV_SYSTAB_SIG */
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u32 revision; /* distinguish different firmware revs */
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u64 (__efiapi *function)(enum uv_bios_cmd, ...);
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/* BIOS runtime callback function ptr */
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u32 size; /* systab size (starting with _VERSION_UV4) */
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struct {
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u32 type:8; /* type of entry */
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u32 offset:24; /* byte offset from struct start to entry */
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} entry[1]; /* additional entries follow */
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};
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extern struct uv_systab *uv_systab;
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#define UV_BIOS_MAXSTRING 128
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struct uv_bios_hub_info {
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unsigned int id;
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union {
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struct {
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unsigned long long this_part:1;
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unsigned long long is_shared:1;
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unsigned long long is_disabled:1;
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} fields;
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struct {
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unsigned long long flags;
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unsigned long long reserved;
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} b;
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} f;
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char name[UV_BIOS_MAXSTRING];
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char location[UV_BIOS_MAXSTRING];
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unsigned int ports;
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};
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struct uv_bios_port_info {
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unsigned int port;
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unsigned int conn_id;
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unsigned int conn_port;
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};
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/* (... end of definitions from UV BIOS ...) */
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enum {
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BIOS_FREQ_BASE_PLATFORM = 0,
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BIOS_FREQ_BASE_INTERVAL_TIMER = 1,
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BIOS_FREQ_BASE_REALTIME_CLOCK = 2
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};
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union partition_info_u {
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u64 val;
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struct {
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u64 hub_version : 8,
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partition_id : 16,
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coherence_id : 16,
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region_size : 24;
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};
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};
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enum uv_memprotect {
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UV_MEMPROT_RESTRICT_ACCESS,
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UV_MEMPROT_ALLOW_AMO,
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UV_MEMPROT_ALLOW_RW
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};
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extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *, long *);
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extern s64 uv_bios_freq_base(u64, u64 *);
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extern int uv_bios_mq_watchlist_alloc(unsigned long, unsigned int,
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unsigned long *);
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extern int uv_bios_mq_watchlist_free(int, int);
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extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect);
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extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *);
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extern int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus);
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extern s64 uv_bios_get_master_nasid(u64 sz, u64 *nasid);
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extern s64 uv_bios_get_heapsize(u64 nasid, u64 sz, u64 *heap_sz);
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extern s64 uv_bios_install_heap(u64 nasid, u64 sz, u64 *heap);
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extern s64 uv_bios_obj_count(u64 nasid, u64 sz, u64 *objcnt);
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extern s64 uv_bios_enum_objs(u64 nasid, u64 sz, u64 *objbuf);
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extern s64 uv_bios_enum_ports(u64 nasid, u64 obj_id, u64 sz, u64 *portbuf);
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extern s64 uv_bios_get_geoinfo(u64 nasid, u64 sz, u64 *geo);
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extern s64 uv_bios_get_pci_topology(u64 sz, u64 *buf);
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extern int uv_bios_init(void);
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extern unsigned long get_uv_systab_phys(bool msg);
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extern unsigned long sn_rtc_cycles_per_second;
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extern int uv_type;
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extern long sn_partition_id;
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extern long sn_coherency_id;
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extern long sn_region_size;
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extern long system_serial_number;
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extern ssize_t uv_get_archtype(char *buf, int len);
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extern int uv_get_hubless_system(void);
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extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */
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/*
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* EFI runtime lock; cf. firmware/efi/runtime-wrappers.c for details
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*/
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extern struct semaphore __efi_uv_runtime_lock;
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#endif /* _ASM_X86_UV_BIOS_H */
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