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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>
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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 48
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 95
static arc_sbp *sbp = (arc_sbp *)PA2KA(0x1000);
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static arc_func_vector_t *arc_entry;
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static void _arc_putchar(char ch);
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/** 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 init_arc(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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/** 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 124
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++)
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        putchar(c->identifier[i]);
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    putchar('\n');
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}
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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 156
void arc_print_memory_map(void)
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{
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    arc_memdescriptor_t *desc;
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364 palkovsky 160
    if (!arc_enabled())
332 palkovsky 161
        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],
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               desc->basepage * 4096,
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               desc->basecount*4);
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        desc = arc_entry->getmemorydescriptor(desc);
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    }
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}
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/** Print charactor to console */
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void arc_putchar(char ch)
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{
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    __u32 cnt;
413 jermar 178
    ipl_t ipl;
332 palkovsky 179
 
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    /* TODO: Should be spinlock? */
413 jermar 181
    ipl = interrupts_disable();
332 palkovsky 182
    arc_entry->write(1, &ch, 1, &cnt);
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    interrupts_restore(ipl);
332 palkovsky 184
 
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}
567 palkovsky 186
 
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/** Try to get character, return character or -1 if not available */
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int arc_getchar(void)
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{
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    char ch;
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    __u32 count;
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    long result;
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    if (arc_entry->getreadstatus(0))
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        return -1;
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    result = arc_entry->read(0, &ch, 1, &count);
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    if (result || count!=1) {
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        cpu_halt();
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        return -1;
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    }
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    if (ch == '\r')
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        return '\n';
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    return ch;
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}