277 lines
5.8 KiB
C
277 lines
5.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Declarations for to Hexagon Virtal Machine.
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*
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* Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
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*/
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#ifndef ASM_HEXAGON_VM_H
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#define ASM_HEXAGON_VM_H
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/*
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* In principle, a Linux kernel for the VM could
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* selectively define the virtual instructions
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* as inline assembler macros, but for a first pass,
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* we'll use subroutines for both the VM and the native
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* kernels. It's costing a subroutine call/return,
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* but it makes for a single set of entry points
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* for tracing/debugging.
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*/
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#define HVM_TRAP1_VMVERSION 0
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#define HVM_TRAP1_VMRTE 1
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#define HVM_TRAP1_VMSETVEC 2
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#define HVM_TRAP1_VMSETIE 3
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#define HVM_TRAP1_VMGETIE 4
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#define HVM_TRAP1_VMINTOP 5
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#define HVM_TRAP1_VMCLRMAP 10
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#define HVM_TRAP1_VMNEWMAP 11
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#define HVM_TRAP1_FORMERLY_VMWIRE 12
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#define HVM_TRAP1_VMCACHE 13
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#define HVM_TRAP1_VMGETTIME 14
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#define HVM_TRAP1_VMSETTIME 15
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#define HVM_TRAP1_VMWAIT 16
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#define HVM_TRAP1_VMYIELD 17
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#define HVM_TRAP1_VMSTART 18
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#define HVM_TRAP1_VMSTOP 19
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#define HVM_TRAP1_VMVPID 20
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#define HVM_TRAP1_VMSETREGS 21
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#define HVM_TRAP1_VMGETREGS 22
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#define HVM_TRAP1_VMTIMEROP 24
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#ifndef __ASSEMBLY__
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enum VM_CACHE_OPS {
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hvmc_ickill,
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hvmc_dckill,
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hvmc_l2kill,
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hvmc_dccleaninva,
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hvmc_icinva,
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hvmc_idsync,
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hvmc_fetch_cfg
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};
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enum VM_INT_OPS {
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hvmi_nop,
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hvmi_globen,
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hvmi_globdis,
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hvmi_locen,
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hvmi_locdis,
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hvmi_affinity,
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hvmi_get,
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hvmi_peek,
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hvmi_status,
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hvmi_post,
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hvmi_clear
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};
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extern void _K_VM_event_vector(void);
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void __vmrte(void);
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long __vmsetvec(void *);
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long __vmsetie(long);
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long __vmgetie(void);
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long __vmintop(enum VM_INT_OPS, long, long, long, long);
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long __vmclrmap(void *, unsigned long);
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long __vmnewmap(void *);
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long __vmcache(enum VM_CACHE_OPS op, unsigned long addr, unsigned long len);
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unsigned long long __vmgettime(void);
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long __vmsettime(unsigned long long);
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long __vmstart(void *, void *);
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void __vmstop(void);
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long __vmwait(void);
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void __vmyield(void);
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long __vmvpid(void);
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static inline long __vmcache_ickill(void)
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{
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return __vmcache(hvmc_ickill, 0, 0);
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}
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static inline long __vmcache_dckill(void)
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{
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return __vmcache(hvmc_dckill, 0, 0);
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}
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static inline long __vmcache_l2kill(void)
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{
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return __vmcache(hvmc_l2kill, 0, 0);
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}
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static inline long __vmcache_dccleaninva(unsigned long addr, unsigned long len)
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{
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return __vmcache(hvmc_dccleaninva, addr, len);
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}
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static inline long __vmcache_icinva(unsigned long addr, unsigned long len)
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{
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return __vmcache(hvmc_icinva, addr, len);
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}
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static inline long __vmcache_idsync(unsigned long addr,
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unsigned long len)
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{
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return __vmcache(hvmc_idsync, addr, len);
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}
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static inline long __vmcache_fetch_cfg(unsigned long val)
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{
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return __vmcache(hvmc_fetch_cfg, val, 0);
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}
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/* interrupt operations */
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static inline long __vmintop_nop(void)
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{
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return __vmintop(hvmi_nop, 0, 0, 0, 0);
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}
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static inline long __vmintop_globen(long i)
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{
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return __vmintop(hvmi_globen, i, 0, 0, 0);
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}
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static inline long __vmintop_globdis(long i)
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{
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return __vmintop(hvmi_globdis, i, 0, 0, 0);
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}
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static inline long __vmintop_locen(long i)
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{
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return __vmintop(hvmi_locen, i, 0, 0, 0);
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}
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static inline long __vmintop_locdis(long i)
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{
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return __vmintop(hvmi_locdis, i, 0, 0, 0);
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}
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static inline long __vmintop_affinity(long i, long cpu)
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{
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return __vmintop(hvmi_affinity, i, cpu, 0, 0);
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}
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static inline long __vmintop_get(void)
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{
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return __vmintop(hvmi_get, 0, 0, 0, 0);
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}
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static inline long __vmintop_peek(void)
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{
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return __vmintop(hvmi_peek, 0, 0, 0, 0);
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}
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static inline long __vmintop_status(long i)
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{
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return __vmintop(hvmi_status, i, 0, 0, 0);
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}
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static inline long __vmintop_post(long i)
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{
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return __vmintop(hvmi_post, i, 0, 0, 0);
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}
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static inline long __vmintop_clear(long i)
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{
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return __vmintop(hvmi_clear, i, 0, 0, 0);
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}
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#else /* Only assembly code should reference these */
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#endif /* __ASSEMBLY__ */
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/*
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* Constants for virtual instruction parameters and return values
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*/
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/* vmnewmap arguments */
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#define VM_TRANS_TYPE_LINEAR 0
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#define VM_TRANS_TYPE_TABLE 1
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#define VM_TLB_INVALIDATE_FALSE 0
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#define VM_TLB_INVALIDATE_TRUE 1
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/* vmsetie arguments */
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#define VM_INT_DISABLE 0
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#define VM_INT_ENABLE 1
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/* vmsetimask arguments */
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#define VM_INT_UNMASK 0
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#define VM_INT_MASK 1
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#define VM_NEWMAP_TYPE_LINEAR 0
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#define VM_NEWMAP_TYPE_PGTABLES 1
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/*
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* Event Record definitions useful to both C and Assembler
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*/
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/* VMEST Layout */
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#define HVM_VMEST_UM_SFT 31
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#define HVM_VMEST_UM_MSK 1
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#define HVM_VMEST_IE_SFT 30
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#define HVM_VMEST_IE_MSK 1
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#define HVM_VMEST_SS_SFT 29
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#define HVM_VMEST_SS_MSK 1
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#define HVM_VMEST_EVENTNUM_SFT 16
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#define HVM_VMEST_EVENTNUM_MSK 0xff
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#define HVM_VMEST_CAUSE_SFT 0
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#define HVM_VMEST_CAUSE_MSK 0xffff
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/*
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* The initial program gets to find a system environment descriptor
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* on its stack when it begins execution. The first word is a version
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* code to indicate what is there. Zero means nothing more.
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*/
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#define HEXAGON_VM_SED_NULL 0
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/*
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* Event numbers for vector binding
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*/
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#define HVM_EV_RESET 0
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#define HVM_EV_MACHCHECK 1
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#define HVM_EV_GENEX 2
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#define HVM_EV_TRAP 8
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#define HVM_EV_INTR 15
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/* These shoud be nuked as soon as we know the VM is up to spec v0.1.1 */
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#define HVM_EV_INTR_0 16
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#define HVM_MAX_INTR 240
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/*
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* Cause values for General Exception
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*/
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#define HVM_GE_C_BUS 0x01
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#define HVM_GE_C_XPROT 0x11
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#define HVM_GE_C_XUSER 0x14
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#define HVM_GE_C_INVI 0x15
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#define HVM_GE_C_PRIVI 0x1B
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#define HVM_GE_C_XMAL 0x1C
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#define HVM_GE_C_WREG 0x1D
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#define HVM_GE_C_PCAL 0x1E
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#define HVM_GE_C_RMAL 0x20
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#define HVM_GE_C_WMAL 0x21
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#define HVM_GE_C_RPROT 0x22
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#define HVM_GE_C_WPROT 0x23
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#define HVM_GE_C_RUSER 0x24
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#define HVM_GE_C_WUSER 0x25
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#define HVM_GE_C_CACHE 0x28
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/*
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* Cause codes for Machine Check
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*/
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#define HVM_MCHK_C_DOWN 0x00
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#define HVM_MCHK_C_BADSP 0x01
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#define HVM_MCHK_C_BADEX 0x02
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#define HVM_MCHK_C_BADPT 0x03
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#define HVM_MCHK_C_REGWR 0x29
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#endif
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