source: mainline/uspace/srv/hid/input/port/msim.c@ 9934f7d

/*
 * Copyright (c) 2006 Josef Cejka
 * Copyright (c) 2011 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup kbd_port
 * @ingroup  kbd
 * @{
 */
/** @file
 * @brief Msim keyboard port driver.
 */

#include <async.h>
#include <sysinfo.h>
#include <kbd_port.h>
#include <kbd.h>
#include <ddi.h>
#include <errno.h>

static int msim_port_init(kbd_dev_t *);
static void msim_port_yield(void);
static void msim_port_reclaim(void);
static void msim_port_write(uint8_t data);

kbd_port_ops_t msim_port = {
        .init = msim_port_init,
        .yield = msim_port_yield,
        .reclaim = msim_port_reclaim,
        .write = msim_port_write
};

static kbd_dev_t *kbd_dev;

static irq_cmd_t msim_cmds[] = {
        {
                .cmd = CMD_PIO_READ_8,
                .addr = (void *) 0,     /* will be patched in run-time */
                .dstarg = 2
        },
        {
                .cmd = CMD_ACCEPT
        }
};

static irq_code_t msim_kbd = {
        sizeof(msim_cmds) / sizeof(irq_cmd_t),
        msim_cmds
};

static void msim_irq_handler(ipc_callid_t iid, ipc_call_t *call);

static int msim_port_init(kbd_dev_t *kdev)
{
        kbd_dev = kdev;

        sysarg_t vaddr;
        if (sysinfo_get_value("kbd.address.virtual", &vaddr) != EOK)
                return -1;
        
        sysarg_t inr;
        if (sysinfo_get_value("kbd.inr", &inr) != EOK)
                return -1;
        
        msim_cmds[0].addr = (void *) vaddr;
        async_set_interrupt_received(msim_irq_handler);
        register_irq(inr, device_assign_devno(), 0, &msim_kbd);
        
        return 0;
}

static void msim_port_yield(void)
{
}

static void msim_port_reclaim(void)
{
}

static void msim_port_write(uint8_t data)
{
        (void) data;
}

static void msim_irq_handler(ipc_callid_t iid, ipc_call_t *call)
{
        int scan_code = IPC_GET_ARG2(*call);
        kbd_push_scancode(kbd_dev, scan_code);
}

/** @}
*/