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/*
* ioreq.h: Hardware virtual machine assist interface definitions.
*
* Copyright (c) 2016 Citrix Systems Inc.
* Copyright (c) 2019 Arm ltd.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ASM_ARM_IOREQ_H__
#define __ASM_ARM_IOREQ_H__
#ifdef CONFIG_IOREQ_SERVER
enum io_state handle_ioserv(struct cpu_user_regs *regs, struct vcpu *v);
enum io_state try_fwd_ioserv(struct cpu_user_regs *regs,
struct vcpu *v, mmio_info_t *info);
#else
static inline enum io_state handle_ioserv(struct cpu_user_regs *regs,
struct vcpu *v)
{
return IO_UNHANDLED;
}
static inline enum io_state try_fwd_ioserv(struct cpu_user_regs *regs,
struct vcpu *v, mmio_info_t *info)
{
return IO_UNHANDLED;
}
#endif
static inline bool handle_pio(uint16_t port, unsigned int size, int dir)
{
/*
* TODO: For Arm64, the main user will be PCI. So this should be
* implemented when we add support for vPCI.
*/
ASSERT_UNREACHABLE();
return true;
}
static inline void msix_write_completion(struct vcpu *v)
{
}
/* This correlation must not be altered */
#define IOREQ_STATUS_HANDLED IO_HANDLED
#define IOREQ_STATUS_UNHANDLED IO_UNHANDLED
#define IOREQ_STATUS_RETRY IO_RETRY
#endif /* __ASM_ARM_IOREQ_H__ */
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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