/*
* QEMU model of the Xilinx ZynqMP CAN controller.
*
* Copyright (c) 2020 Xilinx Inc.
*
* Written-by: Vikram Garhwal<fnu.vikram@xilinx.com>
*
* Based on QEMU CAN Device emulation implemented by Jin Yang, Deniz Eren and
* Pavel Pisa.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef XLNX_ZYNQMP_CAN_H
#define XLNX_ZYNQMP_CAN_H
#include "hw/register.h"
#include "net/can_emu.h"
#include "net/can_host.h"
#include "qemu/fifo32.h"
#include "hw/ptimer.h"
#include "hw/qdev-clock.h"
#define TYPE_XLNX_ZYNQMP_CAN "xlnx.zynqmp-can"
#define XLNX_ZYNQMP_CAN(obj) \
OBJECT_CHECK(XlnxZynqMPCANState, (obj), TYPE_XLNX_ZYNQMP_CAN)
#define MAX_CAN_CTRLS 2
#define XLNX_ZYNQMP_CAN_R_MAX (0x84 / 4)
#define MAILBOX_CAPACITY 64
#define CAN_TIMER_MAX 0XFFFFUL
#define CAN_DEFAULT_CLOCK (24 * 1000 * 1000)
/* Each CAN_FRAME will have 4 * 32bit size. */
#define CAN_FRAME_SIZE 4
#define RXFIFO_SIZE (MAILBOX_CAPACITY * CAN_FRAME_SIZE)
typedef struct XlnxZynqMPCANState {
SysBusDevice parent_obj;
MemoryRegion iomem;
qemu_irq irq;
CanBusClientState bus_client;
CanBusState *canbus;
struct {
uint32_t ext_clk_freq;
} cfg;
RegisterInfo reg_info[XLNX_ZYNQMP_CAN_R_MAX];
uint32_t regs[XLNX_ZYNQMP_CAN_R_MAX];
Fifo32 rx_fifo;
Fifo32 tx_fifo;
Fifo32 txhpb_fifo;
ptimer_state *can_timer;
} XlnxZynqMPCANState;
#endif
