rt-thread-official/bsp/qemu-vexpress-gemini/drivers/vbus_drv.c

121 lines
3.1 KiB
C

/*
* VMM Bus Driver
*
* COPYRIGHT (C) 2015, Shanghai Real-Thread Technology Co., Ltd
* http://www.rt-thread.com
*
* This file is part of RT-Thread (http://www.rt-thread.org)
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2015-01-07 Grissiom add comment
*/
#include <rtthread.h>
#ifdef RT_USING_VBUS
#include <rtdevice.h>
#include <rthw.h>
#include <interrupt.h>
#include <vbus.h>
#include <board.h>
int rt_vbus_do_init(void)
{
return rt_vbus_init((void*)_RT_VBUS_RING_BASE,
(void*)(_RT_VBUS_RING_BASE + _RT_VBUS_RING_SZ));
}
INIT_COMPONENT_EXPORT(rt_vbus_do_init);
static void _bus_resume_in_thread(int irqnr, void *param)
{
rt_vbus_isr(irqnr, RT_NULL);
}
int rt_vbus_hw_init(void)
{
rt_kprintf("install irq: %d\n", RT_VBUS_HOST_VIRQ);
rt_hw_interrupt_install(RT_VBUS_HOST_VIRQ,
_bus_resume_in_thread, RT_NULL,
"vbusin");
rt_hw_interrupt_umask(RT_VBUS_HOST_VIRQ);
return 0;
}
int rt_vbus_hw_eoi(int irqnr, void *param)
{
rt_hw_interrupt_clear(irqnr);
return 0;
}
#define RT_VBUS_SER_PRIO 20
#define RT_VBUS_RFS_PRIO 19
#define RT_VBUS_TASK2_PRIO 6
#define RT_VBUS_INT_PRIO 4
struct rt_vbus_dev rt_vbus_chn_devx[] = {
{
.req =
{
.prio = RT_VBUS_SER_PRIO,
.name = RT_VBUS_SHELL_DEV_NAME,
.is_server = 1,
.recv_wm.low = RT_VMM_RB_BLK_NR / 3,
.recv_wm.high = RT_VMM_RB_BLK_NR * 2 / 3,
.post_wm.low = RT_VMM_RB_BLK_NR / 3,
.post_wm.high = RT_VMM_RB_BLK_NR * 2 / 3,
}
},
{
.req =
{
.prio = 23,
.name = RT_VBUS_RFS_DEV_NAME,
.is_server = 0,
.recv_wm.low = RT_VMM_RB_BLK_NR / 3,
.recv_wm.high = RT_VMM_RB_BLK_NR * 2 / 3,
.post_wm.low = RT_VMM_RB_BLK_NR / 3,
.post_wm.high = RT_VMM_RB_BLK_NR * 2 / 3,
}
},
{
.req =
{
.prio = 30,
.name = "vecho",
.is_server = 1,
.recv_wm.low = RT_VMM_RB_BLK_NR / 3,
.recv_wm.high = RT_VMM_RB_BLK_NR * 2 / 3,
.post_wm.low = RT_VMM_RB_BLK_NR / 3,
.post_wm.high = RT_VMM_RB_BLK_NR * 2 / 3,
}
},
{
.req =
{
.name = RT_NULL,
}
},
};
#endif /* RT_USING_VBUS */