/*
* Copyright (C) 2006 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.
*/
/** @addtogroup sparc64
* @{
*/
/** @file
*/
#include <arch/drivers/kbd.h>
#include <genarch/ofw/ofw_tree.h>
#ifdef CONFIG_Z8530
#include <genarch/kbd/z8530.h>
#endif
#ifdef CONFIG_NS16550
#include <genarch/kbd/ns16550.h>
#endif
#include <ddi/device.h>
#include <ddi/irq.h>
#include <arch/mm/page.h>
#include <arch/types.h>
#include <typedefs.h>
#include <align.h>
#include <func.h>
#include <print.h>
volatile uint8_t *kbd_virt_address = NULL;
kbd_type_t kbd_type = KBD_UNKNOWN;
static irq_t kbd_irq;
/** Initialize keyboard.
*
* Traverse OpenFirmware device tree in order to find necessary
* info about the keyboard device.
*
* @param node Keyboard device node.
*/
void kbd_init(ofw_tree_node_t *node)
{
size_t offset;
uintptr_t aligned_addr;
ofw_tree_property_t *prop;
const char *name;
name = ofw_tree_node_name(node);
/*
* Determine keyboard serial controller type.
*/
kbd_type = KBD_Z8530;
else if (strcmp(name
, "su") == 0) kbd_type = KBD_NS16550;
if (kbd_type == KBD_UNKNOWN) {
printf("Unknown keyboard device.\n"); return;
}
/*
* Read 'interrupts' property.
*/
uint32_t interrupts;
prop = ofw_tree_getprop(node, "interrupts");
if (!prop || !prop->value)
panic("Can't find \"interrupts\" property.\n");
interrupts = *((uint32_t *) prop->value);
/*
* Read 'reg' property.
*/
prop = ofw_tree_getprop(node, "reg");
if (!prop || !prop->value)
panic("Can't find \"reg\" property.\n");
uintptr_t pa;
size_t size;
int inr;
irq_initialize(&kbd_irq);
switch (kbd_type) {
case KBD_Z8530:
size = ((ofw_fhc_reg_t *) prop->value)->size;
if (!ofw_fhc_apply_ranges(node->parent, ((ofw_fhc_reg_t *) prop->value) , &pa)) {
printf("Failed to determine keyboard address.\n"); return;
}
if (!ofw_fhc_map_interrupt(node->parent, ((ofw_fhc_reg_t *) prop->value), interrupts, &inr)) {
printf("Failed to determine keyboard interrupt.\n"); return;
} else {
kbd_irq.inr = inr;
kbd_irq.devno = device_assign_devno();
kbd_irq.trigger = IRQ_TRIGGER_LEVEL;
kbd_irq.claim = z8530_claim;
kbd_irq.handler = z8530_irq_handler;
irq_register(&kbd_irq);
}
break;
case KBD_NS16550:
size = ((ofw_ebus_reg_t *) prop->value)->size;
if (!ofw_ebus_apply_ranges(node->parent, ((ofw_ebus_reg_t *) prop->value) , &pa)) {
printf("Failed to determine keyboard address.\n"); return;
}
if (!ofw_ebus_map_interrupt(node->parent, ((ofw_ebus_reg_t *) prop->value), interrupts, &inr)) {
printf("Failed to determine keyboard interrupt.\n"); return;
} else {
kbd_irq.inr = inr;
kbd_irq.devno = device_assign_devno();
kbd_irq.trigger = IRQ_TRIGGER_LEVEL;
kbd_irq.claim = ns16550_claim;
kbd_irq.handler = ns16550_irq_handler;
irq_register(&kbd_irq);
}
break;
default:
panic("Unexpected type.\n");
}
/*
* We need to pass aligned address to hw_map().
* However, the physical keyboard address can
* be pretty much unaligned, depending on the
* underlying controller.
*/
aligned_addr = ALIGN_DOWN(pa, PAGE_SIZE);
offset = pa - aligned_addr;
kbd_virt_address = (uint8_t *) hw_map(aligned_addr, offset + size) + offset;
switch (kbd_type) {
#ifdef CONFIG_Z8530
case KBD_Z8530:
z8530_init();
break;
#endif
#ifdef CONFIG_NS16550
case KBD_NS16550:
ns16550_init();
break;
#endif
default:
printf("Kernel is not compiled with the necessary keyboard driver this machine requires.\n"); }
}
/** @}
*/