mirror of
https://github.com/brain-hackers/linux-brain.git
synced 2024-06-09 23:36:23 +09:00
d94d71cb45
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation 51 franklin street fifth floor boston ma 02110 1301 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 67 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190529141333.953658117@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
131 lines
3.1 KiB
C
131 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2012 - Virtual Open Systems and Columbia University
|
|
* Authors: Christoffer Dall <c.dall@virtualopensystems.com>
|
|
*/
|
|
|
|
#ifndef __ARM_KVM_COPROC_LOCAL_H__
|
|
#define __ARM_KVM_COPROC_LOCAL_H__
|
|
|
|
struct coproc_params {
|
|
unsigned long CRn;
|
|
unsigned long CRm;
|
|
unsigned long Op1;
|
|
unsigned long Op2;
|
|
unsigned long Rt1;
|
|
unsigned long Rt2;
|
|
bool is_64bit;
|
|
bool is_write;
|
|
};
|
|
|
|
struct coproc_reg {
|
|
/* MRC/MCR/MRRC/MCRR instruction which accesses it. */
|
|
unsigned long CRn;
|
|
unsigned long CRm;
|
|
unsigned long Op1;
|
|
unsigned long Op2;
|
|
|
|
bool is_64bit;
|
|
|
|
/* Trapped access from guest, if non-NULL. */
|
|
bool (*access)(struct kvm_vcpu *,
|
|
const struct coproc_params *,
|
|
const struct coproc_reg *);
|
|
|
|
/* Initialization for vcpu. */
|
|
void (*reset)(struct kvm_vcpu *, const struct coproc_reg *);
|
|
|
|
/* Index into vcpu_cp15(vcpu, ...), or 0 if we don't need to save it. */
|
|
unsigned long reg;
|
|
|
|
/* Value (usually reset value) */
|
|
u64 val;
|
|
};
|
|
|
|
static inline void print_cp_instr(const struct coproc_params *p)
|
|
{
|
|
/* Look, we even formatted it for you to paste into the table! */
|
|
if (p->is_64bit) {
|
|
kvm_pr_unimpl(" { CRm64(%2lu), Op1(%2lu), is64, func_%s },\n",
|
|
p->CRn, p->Op1, p->is_write ? "write" : "read");
|
|
} else {
|
|
kvm_pr_unimpl(" { CRn(%2lu), CRm(%2lu), Op1(%2lu), Op2(%2lu), is32,"
|
|
" func_%s },\n",
|
|
p->CRn, p->CRm, p->Op1, p->Op2,
|
|
p->is_write ? "write" : "read");
|
|
}
|
|
}
|
|
|
|
static inline bool ignore_write(struct kvm_vcpu *vcpu,
|
|
const struct coproc_params *p)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static inline bool read_zero(struct kvm_vcpu *vcpu,
|
|
const struct coproc_params *p)
|
|
{
|
|
*vcpu_reg(vcpu, p->Rt1) = 0;
|
|
return true;
|
|
}
|
|
|
|
/* Reset functions */
|
|
static inline void reset_unknown(struct kvm_vcpu *vcpu,
|
|
const struct coproc_reg *r)
|
|
{
|
|
BUG_ON(!r->reg);
|
|
BUG_ON(r->reg >= ARRAY_SIZE(vcpu->arch.ctxt.cp15));
|
|
vcpu_cp15(vcpu, r->reg) = 0xdecafbad;
|
|
}
|
|
|
|
static inline void reset_val(struct kvm_vcpu *vcpu, const struct coproc_reg *r)
|
|
{
|
|
BUG_ON(!r->reg);
|
|
BUG_ON(r->reg >= ARRAY_SIZE(vcpu->arch.ctxt.cp15));
|
|
vcpu_cp15(vcpu, r->reg) = r->val;
|
|
}
|
|
|
|
static inline void reset_unknown64(struct kvm_vcpu *vcpu,
|
|
const struct coproc_reg *r)
|
|
{
|
|
BUG_ON(!r->reg);
|
|
BUG_ON(r->reg + 1 >= ARRAY_SIZE(vcpu->arch.ctxt.cp15));
|
|
|
|
vcpu_cp15(vcpu, r->reg) = 0xdecafbad;
|
|
vcpu_cp15(vcpu, r->reg+1) = 0xd0c0ffee;
|
|
}
|
|
|
|
static inline int cmp_reg(const struct coproc_reg *i1,
|
|
const struct coproc_reg *i2)
|
|
{
|
|
BUG_ON(i1 == i2);
|
|
if (!i1)
|
|
return 1;
|
|
else if (!i2)
|
|
return -1;
|
|
if (i1->CRn != i2->CRn)
|
|
return i1->CRn - i2->CRn;
|
|
if (i1->CRm != i2->CRm)
|
|
return i1->CRm - i2->CRm;
|
|
if (i1->Op1 != i2->Op1)
|
|
return i1->Op1 - i2->Op1;
|
|
if (i1->Op2 != i2->Op2)
|
|
return i1->Op2 - i2->Op2;
|
|
return i2->is_64bit - i1->is_64bit;
|
|
}
|
|
|
|
|
|
#define CRn(_x) .CRn = _x
|
|
#define CRm(_x) .CRm = _x
|
|
#define CRm64(_x) .CRn = _x, .CRm = 0
|
|
#define Op1(_x) .Op1 = _x
|
|
#define Op2(_x) .Op2 = _x
|
|
#define is64 .is_64bit = true
|
|
#define is32 .is_64bit = false
|
|
|
|
bool access_vm_reg(struct kvm_vcpu *vcpu,
|
|
const struct coproc_params *p,
|
|
const struct coproc_reg *r);
|
|
|
|
#endif /* __ARM_KVM_COPROC_LOCAL_H__ */
|