/*
* Copyright (C) 2005 Ondrej Palkovsky
* 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/drivers/arc.h>
#include <arch/mm/page.h>
#include <print.h>
#include <arch.h>
#include <arch/byteorder.h>
#include <arch/mm/frame.h>
#include <mm/frame.h>
#include <interrupt.h>
/* This is a good joke, SGI HAS different types than NT bioses... */
/* Here is the SGI type */
static char *basetypes[] = {
"ExceptionBlock",
"SystemParameterBlock",
"FreeContiguous",
"FreeMemory",
"BadMemory",
"LoadedProgram",
"FirmwareTemporary",
"FirmwarePermanent"
};
static char *ctypes[] = {
"ARC_type",
"CPU_type",
"FPU_type",
"PrimaryICache",
"PrimaryDCache",
"SecondaryICache",
"SecondaryDCache",
"SecondaryCache",
"Memory",
"EISAAdapter",
"TCAdapter",
"SCSIAdapter",
"DTIAdapter",
"MultiFunctionAdapter",
"DiskController",
"TapeController",
"CDROMController",
"WORMController",
"SerialController",
"NetworkController",
"DisplayController",
"ParallelController",
"PointerController",
"KeyboardController",
"AudioController",
"OtherController",
"DiskPeripheral",
"FloppyDiskPeripheral",
"TapePeripheral",
"ModemPeripheral",
"MonitorPeripheral",
"PrinterPeripheral",
"PointerPeripheral",
"KeyboardPeripheral",
"TerminalPeripheral",
"OtherPeripheral",
"LinePeripheral",
"NetworkPeripheral"
"OtherPeripheral",
"XTalkAdapter",
"PCIAdapter",
"GIOAdapter",
"TPUAdapter",
"Anonymous"
};
static arc_sbp *sbp = (arc_sbp *)PA2KA(0x1000);
static arc_func_vector_t *arc_entry;
static void arc_putchar(char ch);
/** Return true if ARC is available */
int arc_enabled(void)
{
return sbp != NULL;
}
static void arc_print_component(arc_component *c)
{
int i;
printf("%s: ",ctypes
[c
->type
]); for (i=0;i < c->identifier_len;i++)
arc_putchar(c->identifier[i]);
arc_putchar('\n');
}
void arc_print_devices(void)
{
arc_component *c,*next;
if (!arc_enabled())
return;
c = arc_entry->getchild(NULL);
while (c) {
arc_print_component(c);
next = arc_entry->getchild(c);
while (!next) {
next = arc_entry->getpeer(c);
if (!next)
c = arc_entry->getparent(c);
if (!c)
return;
}
c = next;
}
}
void arc_print_memory_map(void)
{
arc_memdescriptor_t *desc;
if (!arc_enabled())
return;
desc = arc_entry->getmemorydescriptor(NULL);
while (desc) {
printf("%s: %d (size: %dKB)\n",basetypes
[desc
->type
], desc->basepage * ARC_FRAME,
desc->basecount*ARC_FRAME/1024);
desc = arc_entry->getmemorydescriptor(desc);
}
}
/** Print charactor to console */
static void arc_putchar(char ch)
{
__u32 cnt;
ipl_t ipl;
/* TODO: Should be spinlock? */
ipl = interrupts_disable();
arc_entry->write(1, &ch, 1, &cnt);
interrupts_restore(ipl);
}
/** Initialize ARC structure
*
* @return 0 - ARC OK, -1 - ARC does not exist
*/
int arc_init(void)
{
if (sbp->signature != ARC_MAGIC) {
sbp = NULL;
return -1;
}
arc_entry = sbp->firmwarevector;
arc_putchar('A');
arc_putchar('R');
arc_putchar('C');
arc_putchar('\n');
}
static bool kbd_polling_enabled;
static chardev_t console;
/** Try to get character, return character or -1 if not available */
static void arc_keyboard_poll(void)
{
char ch;
__u32 count;
long result;
if (! kbd_polling_enabled)
return;
if (arc_entry->getreadstatus(0))
return;
result = arc_entry->read(0, &ch, 1, &count);
if (result || count!=1) {
return;
}
if (ch == '\r')
ch = '\n';
if (ch == 0x7f)
ch = '\b';
chardev_push_character(&console, ch);
}
static void arc_write(chardev_t *dev, const char ch)
{
arc_putchar(ch);
}
static void arc_enable(chardev_t *dev)
{
kbd_polling_enabled = true;
}
static void arc_disable(chardev_t *dev)
{
kbd_polling_enabled = false;
}
static chardev_operations_t arc_ops = {
.resume = arc_enable,
.suspend = arc_disable,
.write = arc_write
};
iroutine old_timer;
/** Do polling on timer interrupt */
static void timer_replace(int n, void *stack)
{
arc_keyboard_poll();
old_timer(n, stack);
arc_keyboard_poll();
}
chardev_t * arc_console(void)
{
kbd_polling_enabled = true;
chardev_initialize("arc_console", &console, &arc_ops);
old_timer = int_register(TIMER_IRQ, "arc_kb_poll", timer_replace);
return &console;
}
/* Initialize frame zones from ARC firmware.
* In the future we may use even the FirmwareTemporary regions,
* currently we use the FreeMemory (what about the LoadedProgram?)
*/
void arc_frame_init(void)
{
arc_memdescriptor_t *desc;
int total = 0;
desc = arc_entry->getmemorydescriptor(NULL);
while (desc) {
if (desc->type == FreeMemory ||
desc->type == FreeContiguous) {
total += desc->basecount*ARC_FRAME;
zone_create_in_region(desc->basepage*ARC_FRAME,
desc->basecount*ARC_FRAME);
}
desc = arc_entry->getmemorydescriptor(desc);
}
config.memory_size = total;
}