linux-imx

/*

 * eisa_enumerator.c - provide support for EISA adapters in PA-RISC machines

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version

 * 2 of the License, or (at your option) any later version.

 *

 * Copyright (c) 2002 Daniel Engstrom <5116@telia.com>

 *

 */

​

#include <linux/ioport.h>

#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/slab.h>

#include <asm/io.h>

#include <linux/uaccess.h>

#include <asm/byteorder.h>

​

#include <asm/eisa_bus.h>

#include <asm/eisa_eeprom.h>

​

​

/*

 * Todo:

 * 

 * PORT init with MASK attr and other size than byte

 * MEMORY with other decode than 20 bit

 * CRC stuff

 * FREEFORM stuff

 */

​

#define EPI 0xc80

#define NUM_SLOT 16

#define SLOT2PORT(x) (x<<12)

​

​

/* macros to handle unaligned accesses and 

 * byte swapping. The data in the EEPROM is

 * little-endian on the big-endian PAROSC */

#define get_8(x) (*(u_int8_t*)(x))

​

static inline u_int16_t get_16(const unsigned char *x)

{ 

    return (x[1] << 8) | x[0];

}

​

static inline u_int32_t get_32(const unsigned char *x)

{

    return (x[3] << 24) | (x[2] << 16) | (x[1] << 8) | x[0];

}

​

static inline u_int32_t get_24(const unsigned char *x)

{

    return (x[2] << 24) | (x[1] << 16) | (x[0] << 8);

}

​

static void print_eisa_id(char *s, u_int32_t id)

{

    char vendor[4];

    int rev;

    int device;

    rev = id & 0xff;

    id >>= 8;

    device = id & 0xff;

    id >>= 8;

    vendor[3] = '\0';

    vendor[2] = '@' + (id & 0x1f);

    id >>= 5;   

    vendor[1] = '@' + (id & 0x1f);

    id >>= 5;   

    vendor[0] = '@' + (id & 0x1f);

    id >>= 5;   

    sprintf(s, "%s%02X%02X", vendor, device, rev);

}

static int configure_memory(const unsigned char *buf, 

               struct resource *mem_parent,

               char *name)

{

    int len;

    u_int8_t c;

    int i;

    struct resource *res;

    len=0;

    for (i=0;i<HPEE_MEMORY_MAX_ENT;i++) {

        c = get_8(buf+len);