/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  ecard.h
 *
 *  Copyright 2007 Russell King
 */

/* Definitions internal to ecard.c - for it's use only!!
 *
 * External expansion card header as read from the card
 */
struct ex_ecid {
        unsigned char   r_irq:1;
        unsigned char   r_zero:1;
        unsigned char   r_fiq:1;
        unsigned char   r_id:4;
        unsigned char   r_a:1;

        unsigned char   r_cd:1;
        unsigned char   r_is:1;
        unsigned char   r_w:2;
        unsigned char   r_r1:4;

        unsigned char   r_r2:8;

        unsigned char   r_prod[2];

        unsigned char   r_manu[2];

        unsigned char   r_country;

        unsigned char   r_fiqmask;
        unsigned char   r_fiqoff[3];

        unsigned char   r_irqmask;
        unsigned char   r_irqoff[3];
};

/*
 * Chunk directory entry as read from the card
 */
struct ex_chunk_dir {
        unsigned char r_id;
        unsigned char r_len[3];
        unsigned long r_start;
        union {
                char string[256];
                char data[1];
        } d;
#define c_id(x)         ((x)->r_id)
#define c_len(x)        ((x)->r_len[0]|((x)->r_len[1]<<8)|((x)->r_len[2]<<16))
#define c_start(x)      ((x)->r_start)
};

typedef enum ecard_type {               /* Cards address space          */
        ECARD_IOC,
        ECARD_MEMC,
        ECARD_EASI
} card_type_t;

typedef enum {                          /* Speed for ECARD_IOC space    */
        ECARD_SLOW       = 0,
        ECARD_MEDIUM     = 1,
        ECARD_FAST       = 2,
        ECARD_SYNC       = 3
} card_speed_t;