0,0 → 1,163 |
/* |
* Copyright (c) 2005-2007 Ondrej Palkovsky, Michal Kebrt |
* 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 arm32 |
* @{ |
*/ |
/** @file |
*/ |
|
#include <interrupt.h> |
#include <ipc/irq.h> |
#include <console/chardev.h> |
#include <arch/drivers/gxemul.h> |
#include <console/console.h> |
#include <sysinfo/sysinfo.h> |
#include <print.h> |
|
/** Address of devices. */ |
#define GXEMUL_VIDEORAM 0x10000000 |
#define GXEMUL_KBD_ADDRESS 0x10000000 |
#define GXEMUL_KBD_IRQ 0 |
|
static chardev_t console; |
static irq_t gxemul_irq; |
|
static void gxemul_write(chardev_t *dev, const char ch); |
static void gxemul_enable(chardev_t *dev); |
static void gxemul_disable(chardev_t *dev); |
static char gxemul_do_read(chardev_t *dev); |
|
static chardev_operations_t gxemul_ops = { |
.resume = gxemul_enable, |
.suspend = gxemul_disable, |
.write = gxemul_write, |
.read = gxemul_do_read, |
}; |
|
/** Putchar that works with gxemul */ |
void gxemul_write(chardev_t *dev, const char ch) |
{ |
*((char *) GXEMUL_VIDEORAM) = ch; |
} |
|
/* Called from getc(). */ |
void gxemul_enable(chardev_t *dev) |
{ |
// cp0_unmask_int(GXEMUL_KBD_IRQ); |
} |
|
/* Called from getc(). */ |
void gxemul_disable(chardev_t *dev) |
{ |
// cp0_mask_int(GXEMUL_KBD_IRQ); |
} |
|
/** Read character using polling, assume interrupts disabled */ |
static char gxemul_do_read(chardev_t *dev) |
{ |
char ch; |
|
while (1) { |
ch = *((volatile char *) GXEMUL_KBD_ADDRESS); |
if (ch) { |
if (ch == '\r') |
return '\n'; |
if (ch == 0x7f) |
return '\b'; |
return ch; |
} |
} |
} |
|
/** Process keyboard interrupt. */ |
static void gxemul_irq_handler(irq_t *irq, void *arg, ...) |
{ |
if ((irq->notif_cfg.notify) && (irq->notif_cfg.answerbox)) |
ipc_irq_send_notif(irq); |
else { |
char ch = 0; |
|
ch = *((char *) GXEMUL_KBD_ADDRESS); |
if (ch =='\r') |
ch = '\n'; |
if (ch == 0x7f) |
ch = '\b'; |
chardev_push_character(&console, ch); |
} |
} |
|
static irq_ownership_t gxemul_claim(void) |
{ |
return IRQ_ACCEPT; |
} |
|
void gxemul_kbd_grab(void) |
{ |
ipl_t ipl = interrupts_disable(); |
spinlock_lock(&msim_irq.lock); |
gxemul_irq.notif_cfg.notify = false; |
spinlock_unlock(&gxemul_irq.lock); |
interrupts_restore(ipl); |
} |
|
void gxemul_kbd_release(void) |
{ |
ipl_t ipl = interrupts_disable(); |
spinlock_lock(&gxemul_irq.lock); |
if (gxemul_irq.notif_cfg.answerbox) |
gxemul_irq.notif_cfg.notify = true; |
spinlock_unlock(&gxemul_irq.lock); |
interrupts_restore(ipl); |
} |
|
|
/* Return console object representing msim console */ |
void gxemul_console(devno_t devno) |
{ |
chardev_initialize("msim_console", &console, &gxemul_ops); |
stdin = &console; |
stdout = &console; |
|
irq_initialize(&gxemul_irq); |
gxemul_irq.devno = devno; |
gxemul_irq.inr = GXEMUL_KBD_IRQ; |
gxemul_irq.claim = gxemul_claim; |
gxemul_irq.handler = gxemul_irq_handler; |
irq_register(&gxemul_irq); |
|
// cp0_unmask_int(GXEMUL_KBD_IRQ); |
|
sysinfo_set_item_val("kbd", NULL, true); |
sysinfo_set_item_val("kbd.devno", NULL, devno); |
sysinfo_set_item_val("kbd.inr", NULL, GXEMUL_KBD_IRQ); |
sysinfo_set_item_val("kbd.address.virtual", NULL, GXEMUL_KBD_ADDRESS); |
} |
|
/** @} |
*/ |