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