source: mainline/arch/mips32/src/drivers/arc.c@ 22f7769

/*
 * 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>

/* 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);

/** Initialize ARC structure
 *
 * @return 0 - ARC OK, -1 - ARC does not exist
 */
int init_arc(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');
}

/** 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++)
                putchar(c->identifier[i]);
        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;

        printf("Memory map:\n");

        desc = arc_entry->getmemorydescriptor(NULL);
        while (desc) {
                printf("%s: %d (size: %dKB)\n",basetypes[desc->type],
                       desc->basepage * 4096,
                       desc->basecount*4);
                desc = arc_entry->getmemorydescriptor(desc);
        }
}

/** Print charactor to console */
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);
        
}