0,0 → 1,158 |
/* |
* Copyright (c) 2001-2004 Jakub Jermar |
* Copyright (c) 2006 Josef Cejka |
* 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 i8042 port driver. |
*/ |
|
#include <ipc/ipc.h> |
#include <async.h> |
#include <unistd.h> |
#include <sysinfo.h> |
#include <kbd_port.h> |
#include <kbd.h> |
#include "i8042.h" |
|
/* Interesting bits for status register */ |
#define i8042_OUTPUT_FULL 0x1 |
#define i8042_INPUT_FULL 0x2 |
#define i8042_MOUSE_DATA 0x20 |
|
/* Command constants */ |
#define i8042_CMD_KBD 0x60 |
#define i8042_CMD_MOUSE 0xd4 |
|
/* Keyboard cmd byte */ |
#define i8042_KBD_IE 0x1 |
#define i8042_MOUSE_IE 0x2 |
#define i8042_KBD_DISABLE 0x10 |
#define i8042_MOUSE_DISABLE 0x20 |
#define i8042_KBD_TRANSLATE 0x40 |
|
/* Mouse constants */ |
#define MOUSE_OUT_INIT 0xf4 |
#define MOUSE_ACK 0xfa |
|
static irq_cmd_t i8042_cmds[2] = { |
{ CMD_PORT_READ_1, (void *) 0x64, 0, 1 }, |
{ CMD_PORT_READ_1, (void *) 0x60, 0, 2 } |
}; |
|
static irq_code_t i8042_kbd = { |
2, |
i8042_cmds |
}; |
|
static void wait_ready(void) { |
while (i8042_status_read() & i8042_INPUT_FULL) |
; |
} |
|
static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call); |
|
int kbd_port_init(void) |
{ |
// int i; |
int mouseenabled = 0; |
|
async_set_interrupt_received(i8042_irq_handler); |
iospace_enable(task_get_id(), (void *) i8042_DATA, 5); |
|
/* Disable kbd, enable mouse */ |
i8042_command_write(i8042_CMD_KBD); |
wait_ready(); |
i8042_command_write(i8042_CMD_KBD); |
wait_ready(); |
i8042_data_write(i8042_KBD_DISABLE); |
wait_ready(); |
|
/* Flush all current IO */ |
while (i8042_status_read() & i8042_OUTPUT_FULL) |
i8042_data_read(); |
|
/* Initialize mouse */ |
/* i8042_command_write(i8042_CMD_MOUSE); |
wait_ready(); |
i8042_data_write(MOUSE_OUT_INIT); |
wait_ready(); |
|
int mouseanswer = 0; |
for (i=0;i < 1000; i++) { |
int status = i8042_status_read(); |
if (status & i8042_OUTPUT_FULL) { |
int data = i8042_data_read(); |
if (status & i8042_MOUSE_DATA) { |
mouseanswer = data; |
break; |
} |
} |
usleep(1000); |
}*/ |
// if (mouseanswer == MOUSE_ACK) { |
// /* enable mouse */ |
// mouseenabled = 1; |
// |
// ipc_register_irq(sysinfo_value("mouse.inr"), sysinfo_value("mouse.devno"), 0, &i8042_kbd); |
// } |
|
/* Enable kbd */ |
ipc_register_irq(sysinfo_value("kbd.inr"), sysinfo_value("kbd.devno"), 0, &i8042_kbd); |
|
int newcontrol = i8042_KBD_IE | i8042_KBD_TRANSLATE; |
if (mouseenabled) |
newcontrol |= i8042_MOUSE_IE; |
|
i8042_command_write(i8042_CMD_KBD); |
wait_ready(); |
i8042_data_write(newcontrol); |
wait_ready(); |
|
return 0; |
} |
|
static void i8042_irq_handler(ipc_callid_t iid, ipc_call_t *call) |
{ |
int status = IPC_GET_ARG1(*call); |
|
if ((status & i8042_MOUSE_DATA)) |
return 0; |
|
int scan_code = IPC_GET_ARG2(*call); |
|
kbd_push_scancode(scan_code); |
return 1; |
} |
|
/** |
* @} |
*/ |