Commit f7fec5ec authored by Anup Patel's avatar Anup Patel Committed by Anup Patel
Browse files

RISC-V: KVM: Add IMSIC related defines 



We add IMSIC related defines in a separate header so that different
parts of KVM code can share it. Once AIA drivers are merged will
have a common IMSIC header shared by both KVM and IRQCHIP driver.

Signed-off-by: default avatarAnup Patel <apatel@ventanamicro.com>
Reviewed-by: default avatarAtish Patra <atishp@rivosinc.com>
Signed-off-by: default avatarAnup Patel <anup@brainfault.org>
parent 77cf33c1

arch/riscv/include/asm/kvm_aia_imsic.h

0 → 100644
+38 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (C) 2021 Western Digital Corporation or its affiliates.

 * Copyright (C) 2022 Ventana Micro Systems Inc.

 */

#ifndef __KVM_RISCV_AIA_IMSIC_H

#define __KVM_RISCV_AIA_IMSIC_H



#include <linux/types.h>

#include <asm/csr.h>



#define IMSIC_MMIO_PAGE_SHIFT		12

#define IMSIC_MMIO_PAGE_SZ		(1UL << IMSIC_MMIO_PAGE_SHIFT)

#define IMSIC_MMIO_PAGE_LE		0x00

#define IMSIC_MMIO_PAGE_BE		0x04



#define IMSIC_MIN_ID			63

#define IMSIC_MAX_ID			2048



#define IMSIC_EIDELIVERY		0x70



#define IMSIC_EITHRESHOLD		0x72



#define IMSIC_EIP0			0x80

#define IMSIC_EIP63			0xbf

#define IMSIC_EIPx_BITS			32



#define IMSIC_EIE0			0xc0

#define IMSIC_EIE63			0xff

#define IMSIC_EIEx_BITS			32



#define IMSIC_FIRST			IMSIC_EIDELIVERY

#define IMSIC_LAST			IMSIC_EIE63



#define IMSIC_MMIO_SETIPNUM_LE		0x00

#define IMSIC_MMIO_SETIPNUM_BE		0x04



#endif

arch/riscv/kvm/aia.c

+1 −2
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <linux/percpu.h>

#include <linux/spinlock.h>

#include <asm/hwcap.h>

#include <asm/kvm_aia_imsic.h>



struct aia_hgei_control {

	raw_spinlock_t lock;
@@ -364,8 +365,6 @@ static int aia_rmw_iprio(struct kvm_vcpu *vcpu, unsigned int isel, 
	return KVM_INSN_CONTINUE_NEXT_SEPC;

}



#define IMSIC_FIRST	0x70

#define IMSIC_LAST	0xff

int kvm_riscv_vcpu_aia_rmw_ireg(struct kvm_vcpu *vcpu, unsigned int csr_num,

				unsigned long *val, unsigned long new_val,

				unsigned long wr_mask)