qemu

FORK: QEMU emulator
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xlnx-zynqmp-can.h (2544B)

      1 /*
      2  * QEMU model of the Xilinx ZynqMP CAN controller.
      3  *
      4  * Copyright (c) 2020 Xilinx Inc.
      5  *
      6  * Written-by: Vikram Garhwal<fnu.vikram@xilinx.com>
      7  *
      8  * Based on QEMU CAN Device emulation implemented by Jin Yang, Deniz Eren and
      9  * Pavel Pisa.
     10  *
     11  * Permission is hereby granted, free of charge, to any person obtaining a copy
     12  * of this software and associated documentation files (the "Software"), to deal
     13  * in the Software without restriction, including without limitation the rights
     14  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     15  * copies of the Software, and to permit persons to whom the Software is
     16  * furnished to do so, subject to the following conditions:
     17  *
     18  * The above copyright notice and this permission notice shall be included in
     19  * all copies or substantial portions of the Software.
     20  *
     21  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     22  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     23  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     24  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     25  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     26  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     27  * THE SOFTWARE.
     28  */
     29 
     30 #ifndef XLNX_ZYNQMP_CAN_H
     31 #define XLNX_ZYNQMP_CAN_H
     32 
     33 #include "hw/register.h"
     34 #include "net/can_emu.h"
     35 #include "net/can_host.h"
     36 #include "qemu/fifo32.h"
     37 #include "hw/ptimer.h"
     38 #include "hw/qdev-clock.h"
     39 
     40 #define TYPE_XLNX_ZYNQMP_CAN "xlnx.zynqmp-can"
     41 
     42 #define XLNX_ZYNQMP_CAN(obj) \
     43      OBJECT_CHECK(XlnxZynqMPCANState, (obj), TYPE_XLNX_ZYNQMP_CAN)
     44 
     45 #define MAX_CAN_CTRLS      2
     46 #define XLNX_ZYNQMP_CAN_R_MAX     (0x84 / 4)
     47 #define MAILBOX_CAPACITY   64
     48 #define CAN_TIMER_MAX  0XFFFFUL
     49 #define CAN_DEFAULT_CLOCK (24 * 1000 * 1000)
     50 
     51 /* Each CAN_FRAME will have 4 * 32bit size. */
     52 #define CAN_FRAME_SIZE     4
     53 #define RXFIFO_SIZE        (MAILBOX_CAPACITY * CAN_FRAME_SIZE)
     54 
     55 typedef struct XlnxZynqMPCANState {
     56     SysBusDevice        parent_obj;
     57     MemoryRegion        iomem;
     58 
     59     qemu_irq            irq;
     60 
     61     CanBusClientState   bus_client;
     62     CanBusState         *canbus;
     63 
     64     struct {
     65         uint32_t        ext_clk_freq;
     66     } cfg;
     67 
     68     RegisterInfo        reg_info[XLNX_ZYNQMP_CAN_R_MAX];
     69     uint32_t            regs[XLNX_ZYNQMP_CAN_R_MAX];
     70 
     71     Fifo32              rx_fifo;
     72     Fifo32              tx_fifo;
     73     Fifo32              txhpb_fifo;
     74 
     75     ptimer_state        *can_timer;
     76 } XlnxZynqMPCANState;
     77 
     78 #endif