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/*
* QEMU RISCV Host Target Interface (HTIF) Emulation
*
* Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
* Copyright (c) 2017-2018 SiFive, Inc.
*
* 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 or later, 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 HW_RISCV_HTIF_H
#define HW_RISCV_HTIF_H
#include "chardev/char.h"
#include "chardev/char-fe.h"
#include "exec/memory.h"
#include "target/riscv/cpu.h"
#define TYPE_HTIF_UART "riscv.htif.uart"
typedef struct HTIFState {
int allow_tohost;
int fromhost_inprogress;
hwaddr tohost_offset;
hwaddr fromhost_offset;
uint64_t tohost_size;
uint64_t fromhost_size;
MemoryRegion mmio;
MemoryRegion *address_space;
MemoryRegion *main_mem;
void *main_mem_ram_ptr;
CPURISCVState *env;
CharBackend chr;
uint64_t pending_read;
} HTIFState;
extern const VMStateDescription vmstate_htif;
extern const MemoryRegionOps htif_io_ops;
/* HTIF symbol callback */
void htif_symbol_callback(const char *st_name, int st_info, uint64_t st_value,
uint64_t st_size);
/* legacy pre qom */
HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
CPURISCVState *env, Chardev *chr);
#endif
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