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332 palkovsky 1
/*
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 * Copyright (C) 2005 Ondrej Palkovsky
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <arch/drivers/arc.h>
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#include <arch/mm/page.h>
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#include <print.h>
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#include <arch.h>
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#include <arch/byteorder.h>
573 palkovsky 34
#include <arch/mm/frame.h>
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#include <mm/frame.h>
575 palkovsky 36
#include <interrupt.h>
332 palkovsky 37
 
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/* This is a good joke, SGI HAS different types than NT bioses... */
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/* Here is the SGI type */
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static char *basetypes[] = {
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    "ExceptionBlock",
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    "SystemParameterBlock",
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    "FreeContiguous",
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    "FreeMemory",
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    "BadMemory",
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    "LoadedProgram",
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    "FirmwareTemporary",
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    "FirmwarePermanent"
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};
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344 palkovsky 51
static char *ctypes[] = {
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    "ARC_type",
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    "CPU_type",
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    "FPU_type",
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    "PrimaryICache",
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    "PrimaryDCache",
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    "SecondaryICache",
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    "SecondaryDCache",
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    "SecondaryCache",
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    "Memory",
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    "EISAAdapter",
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    "TCAdapter",
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    "SCSIAdapter",
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    "DTIAdapter",
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    "MultiFunctionAdapter",
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    "DiskController",
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    "TapeController",
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    "CDROMController",
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    "WORMController",
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    "SerialController",
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    "NetworkController",
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    "DisplayController",
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    "ParallelController",
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    "PointerController",
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    "KeyboardController",
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    "AudioController",
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    "OtherController",
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    "DiskPeripheral",
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    "FloppyDiskPeripheral",
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    "TapePeripheral",
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    "ModemPeripheral",
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    "MonitorPeripheral",
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    "PrinterPeripheral",
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    "PointerPeripheral",
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    "KeyboardPeripheral",
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    "TerminalPeripheral",
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    "OtherPeripheral",
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    "LinePeripheral",
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    "NetworkPeripheral"
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    "OtherPeripheral",
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    "XTalkAdapter",
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    "PCIAdapter",
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    "GIOAdapter",
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    "TPUAdapter",
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    "Anonymous"
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};
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332 palkovsky 98
static arc_sbp *sbp = (arc_sbp *)PA2KA(0x1000);
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static arc_func_vector_t *arc_entry;
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575 palkovsky 102
static void arc_putchar(char ch);
332 palkovsky 103
 
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/** Return true if ARC is available */
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int arc_enabled(void)
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{
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    return sbp != NULL;
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}
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344 palkovsky 110
static void arc_print_component(arc_component *c)
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{
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    int i;
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    printf("%s: ",ctypes[c->type]);
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    for (i=0;i < c->identifier_len;i++)
575 palkovsky 116
        arc_putchar(c->identifier[i]);
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    arc_putchar('\n');
344 palkovsky 118
}
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void arc_print_devices(void)
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{
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    arc_component *c,*next;
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    if (!arc_enabled())
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        return;
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    c = arc_entry->getchild(NULL);
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    while (c) {
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        arc_print_component(c);
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        next = arc_entry->getchild(c);
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        while (!next) {
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            next = arc_entry->getpeer(c);
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            if (!next)
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                c = arc_entry->getparent(c);
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            if (!c)
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                return;
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        }
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        c = next;
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    }
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}
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332 palkovsky 142
void arc_print_memory_map(void)
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{
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    arc_memdescriptor_t *desc;
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364 palkovsky 146
    if (!arc_enabled())
332 palkovsky 147
        return;
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    printf("Memory map:\n");
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    desc = arc_entry->getmemorydescriptor(NULL);
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    while (desc) {
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        printf("%s: %d (size: %dKB)\n",basetypes[desc->type],
573 palkovsky 154
               desc->basepage * ARC_FRAME,
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               desc->basecount*ARC_FRAME/1024);
332 palkovsky 156
        desc = arc_entry->getmemorydescriptor(desc);
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    }
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}
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/** Print charactor to console */
575 palkovsky 161
static void arc_putchar(char ch)
332 palkovsky 162
{
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    __u32 cnt;
413 jermar 164
    ipl_t ipl;
332 palkovsky 165
 
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    /* TODO: Should be spinlock? */
413 jermar 167
    ipl = interrupts_disable();
332 palkovsky 168
    arc_entry->write(1, &ch, 1, &cnt);
413 jermar 169
    interrupts_restore(ipl);
332 palkovsky 170
 
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}
567 palkovsky 172
 
575 palkovsky 173
/** Initialize ARC structure
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 *
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 * @return 0 - ARC OK, -1 - ARC does not exist
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 */
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int arc_init(void)
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{
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    if (sbp->signature != ARC_MAGIC) {
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        sbp = NULL;
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        return -1;
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    }
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    arc_entry = sbp->firmwarevector;
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    arc_putchar('A');
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    arc_putchar('R');
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    arc_putchar('C');
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    arc_putchar('\n');
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}
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577 palkovsky 191
static bool kbd_polling_enabled;
575 palkovsky 192
static chardev_t console;
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567 palkovsky 194
/** Try to get character, return character or -1 if not available */
575 palkovsky 195
static void arc_keyboard_poll(void)
567 palkovsky 196
{
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    char ch;
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    __u32 count;
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    long result;
575 palkovsky 200
 
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    if (! kbd_polling_enabled)
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        return;
567 palkovsky 203
 
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    if (arc_entry->getreadstatus(0))
575 palkovsky 205
        return;
567 palkovsky 206
    result = arc_entry->read(0, &ch, 1, &count);
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    if (result || count!=1) {
575 palkovsky 208
        return;
567 palkovsky 209
    }
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    if (ch == '\r')
575 palkovsky 211
        ch = '\n';
588 palkovsky 212
    if (ch == 0x7f)
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        ch = '\b';
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575 palkovsky 215
    chardev_push_character(&console, ch);
567 palkovsky 216
}
573 palkovsky 217
 
575 palkovsky 218
static void arc_write(chardev_t *dev, const char ch)
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{
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    arc_putchar(ch);
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}
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static void arc_enable(chardev_t *dev)
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{
577 palkovsky 225
    kbd_polling_enabled = true;
575 palkovsky 226
}
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static void arc_disable(chardev_t *dev)
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{
577 palkovsky 230
    kbd_polling_enabled = false;
575 palkovsky 231
}
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static chardev_operations_t arc_ops = {
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    .resume = arc_enable,
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    .suspend = arc_disable,
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    .write = arc_write
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};
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iroutine old_timer;
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/** Do polling on timer interrupt */
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static void timer_replace(int n, void *stack)
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{
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    arc_keyboard_poll();
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    old_timer(n, stack);
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    arc_keyboard_poll();
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}
247
 
248
 
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chardev_t * arc_console(void)
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{
577 palkovsky 251
    kbd_polling_enabled = true;
575 palkovsky 252
 
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    chardev_initialize("arc_console", &console, &arc_ops);
590 palkovsky 254
    old_timer = int_register(TIMER_IRQ, "arc_kb_poll", timer_replace);
575 palkovsky 255
    return &console;
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}
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573 palkovsky 258
/* Initialize frame zones from ARC firmware.
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 * In the future we may use even the FirmwareTemporary regions,
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 * currently we use the FreeMemory (what about the LoadedProgram?)
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 */
262
void arc_frame_init(void)
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{
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    arc_memdescriptor_t *desc;
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    int total = 0;
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267
    desc = arc_entry->getmemorydescriptor(NULL);
268
    while (desc) {
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        if (desc->type == FreeMemory ||
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            desc->type == FreeContiguous) {
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            total += desc->basecount*ARC_FRAME;
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            zone_create_in_region(desc->basepage*ARC_FRAME,
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                          desc->basecount*ARC_FRAME);
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        }
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        desc = arc_entry->getmemorydescriptor(desc);
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    }
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278
    config.memory_size = total;
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}
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