/*
* Copyright (C) 2005 Jakub Jermar
* 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.
*/
#include <arch/console.h>
#include <arch/types.h>
#include <typedefs.h>
#include <genarch/fb/fb.h>
#include <arch/drivers/fb.h>
#include <arch/drivers/i8042.h>
#include <genarch/i8042/i8042.h>
#include <genarch/ofw/ofw.h>
#include <console/chardev.h>
#include <console/console.h>
#include <arch/asm.h>
#include <arch/register.h>
#include <proc/thread.h>
#include <synch/mutex.h>
#include <arch/mm/tlb.h>
#define KEYBOARD_POLL_PAUSE 50000 /* 50ms */
static void ofw_sparc64_putchar(chardev_t *d, const char ch);
static char ofw_sparc64_getchar(chardev_t *d);
static void ofw_sparc64_suspend(chardev_t *d);
static void ofw_sparc64_resume(chardev_t *d);
mutex_t canwork;
static volatile int ofw_console_active;
static chardev_t ofw_sparc64_console;
static chardev_operations_t ofw_sparc64_console_ops = {
.write = ofw_sparc64_putchar,
.read = ofw_sparc64_getchar,
.resume = ofw_sparc64_resume,
.suspend = ofw_sparc64_suspend
};
/** Initialize kernel console to use OpenFirmware services. */
void ofw_sparc64_console_init(void)
{
chardev_initialize("ofw_sparc64_console", &ofw_sparc64_console, &ofw_sparc64_console_ops);
stdin = &ofw_sparc64_console;
stdout = &ofw_sparc64_console;
mutex_initialize(&canwork);
ofw_console_active = 1;
}
/** Initialize kernel console to use framebuffer and keyboard directly. */
void standalone_sparc64_console_init(void)
{
ofw_console_active = 0;
stdin = NULL;
dtlb_insert_mapping(FB_VIRT_ADDRESS, FB_PHYS_ADDRESS, PAGESIZE_4M, true, false);
dtlb_insert_mapping(KBD_VIRT_ADDRESS, KBD_PHYS_ADDRESS, PAGESIZE_8K, true, false);
fb_init(FB_VIRT_ADDRESS, FB_X_RES, FB_Y_RES, FB_COLOR_DEPTH/8);
i8042_init();
}
/** Write one character using OpenFirmware.
*
* @param d Character device (ignored).
* @param ch Character to be written.
*/
void ofw_sparc64_putchar(chardev_t *d, const char ch)
{
pstate_reg_t pstate;
/*
* 32-bit OpenFirmware depends on PSTATE.AM bit set.
*/
pstate.value = pstate_read();
pstate.am = true;
pstate_write(pstate.value);
if (ch == '\n')
ofw_putchar('\r');
ofw_putchar(ch);
pstate.am = false;
pstate_write(pstate.value);
}
/** Read one character using OpenFirmware.
*
* The call is non-blocking.
*
* @param d Character device (ignored).
* @return Character read or zero if no character was read.
*/
char ofw_sparc64_getchar(chardev_t *d)
{
char ch;
pstate_reg_t pstate;
/*
* 32-bit OpenFirmware depends on PSTATE.AM bit set.
*/
pstate.value = pstate_read();
pstate.am = true;
pstate_write(pstate.value);
ch = ofw_getchar();
pstate.am = false;
pstate_write(pstate.value);
return ch;
}
void ofw_sparc64_suspend(chardev_t *d)
{
mutex_lock(&canwork);
}
void ofw_sparc64_resume(chardev_t *d)
{
mutex_unlock(&canwork);
}
/** Kernel thread for pushing characters read from OFW to input buffer.
*
* @param arg Ignored.
*/
void kofwinput(void *arg)
{
while (ofw_console_active) {
char ch = 0;
mutex_lock(&canwork);
mutex_unlock(&canwork);
ch = ofw_sparc64_getchar(NULL);
if (ch) {
if (ch == '\r')
ch = '\n';
chardev_push_character(&ofw_sparc64_console, ch);
}
thread_usleep(KEYBOARD_POLL_PAUSE);
}
}
/** Kernel thread for polling keyboard.
*
* @param arg Ignored.
*/
void kkbdpoll(void *arg)
{
while (1) {
i8042_poll();
thread_usleep(KEYBOARD_POLL_PAUSE);
}
}