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60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
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/*
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* QEMU RISCV Host Target Interface (HTIF) Emulation
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*
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* Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
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* Copyright (c) 2017-2018 SiFive, Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2 or later, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef HW_RISCV_HTIF_H
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#define HW_RISCV_HTIF_H
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#include "chardev/char.h"
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#include "chardev/char-fe.h"
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#include "exec/memory.h"
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#include "target/riscv/cpu.h"
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#define TYPE_HTIF_UART "riscv.htif.uart"
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typedef struct HTIFState {
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int allow_tohost;
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int fromhost_inprogress;
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hwaddr tohost_offset;
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hwaddr fromhost_offset;
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uint64_t tohost_size;
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uint64_t fromhost_size;
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MemoryRegion mmio;
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MemoryRegion *address_space;
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MemoryRegion *main_mem;
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void *main_mem_ram_ptr;
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CPURISCVState *env;
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CharBackend chr;
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uint64_t pending_read;
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} HTIFState;
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extern const VMStateDescription vmstate_htif;
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extern const MemoryRegionOps htif_io_ops;
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/* HTIF symbol callback */
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void htif_symbol_callback(const char *st_name, int st_info, uint64_t st_value,
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uint64_t st_size);
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/* legacy pre qom */
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HTIFState *htif_mm_init(MemoryRegion *address_space, MemoryRegion *main_mem,
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CPURISCVState *env, Chardev *chr);
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#endif
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