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/*

 *  ISA Plug & Play support

 *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>

 *

 *

 *   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.

 *

 *   This program is distributed in the hope that it will be useful,

 *   but WITHOUT ANY WARRANTY; without even the implied warranty of

 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *   GNU General Public License for more details.

 *

 *   You should have received a copy of the GNU General Public License

 *   along with this program; if not, write to the Free Software

 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 *

 */

#ifndef LINUX_ISAPNP_H

#define LINUX_ISAPNP_H

#include <linux/errno.h>

#include <linux/pnp.h>

/*

 *  Configuration registers (TODO: change by specification)

 */

#define ISAPNP_CFG_ACTIVATE             0x30    /* byte */

#define ISAPNP_CFG_MEM                  0x40    /* 4 * dword */

#define ISAPNP_CFG_PORT                 0x60    /* 8 * word */

#define ISAPNP_CFG_IRQ                  0x70    /* 2 * word */

#define ISAPNP_CFG_DMA                  0x74    /* 2 * byte */

/*

 *

 */

#define ISAPNP_VENDOR(a,b,c)    (((((a)-'A'+1)&0x3f)<<2)|\

                                ((((b)-'A'+1)&0x18)>>3)|((((b)-'A'+1)&7)<<13)|\

                                ((((c)-'A'+1)&0x1f)<<8))

#define ISAPNP_DEVICE(x)        ((((x)&0xf000)>>8)|\

                                 (((x)&0x0f00)>>8)|\

                                 (((x)&0x00f0)<<8)|\

                                 (((x)&0x000f)<<8))

#define ISAPNP_FUNCTION(x)      ISAPNP_DEVICE(x)

/*

 *

 */

#ifdef __KERNEL__

#define DEVICE_COUNT_COMPATIBLE 4

#define ISAPNP_ANY_ID           0xffff

#define ISAPNP_CARD_DEVS        8

#define ISAPNP_CARD_ID(_va, _vb, _vc, _device) \

                .card_vendor = ISAPNP_VENDOR(_va, _vb, _vc), .card_device = ISAPNP_DEVICE(_device)

#define ISAPNP_CARD_END \

                .card_vendor = 0, .card_device = 0

#define ISAPNP_DEVICE_ID(_va, _vb, _vc, _function) \

                { .vendor = ISAPNP_VENDOR(_va, _vb, _vc), .function = ISAPNP_FUNCTION(_function) }

/* export used IDs outside module */

#define ISAPNP_CARD_TABLE(name) \

                MODULE_GENERIC_TABLE(isapnp_card, name)

struct isapnp_card_id {

        unsigned long driver_data;      /* data private to the driver */

        unsigned short card_vendor, card_device;

        struct {

                unsigned short vendor, function;

        } devs[ISAPNP_CARD_DEVS];       /* logical devices */

};

#define ISAPNP_DEVICE_SINGLE(_cva, _cvb, _cvc, _cdevice, _dva, _dvb, _dvc, _dfunction) \

                .card_vendor = ISAPNP_VENDOR(_cva, _cvb, _cvc), .card_device =  ISAPNP_DEVICE(_cdevice), \

                .vendor = ISAPNP_VENDOR(_dva, _dvb, _dvc), .function = ISAPNP_FUNCTION(_dfunction)

#define ISAPNP_DEVICE_SINGLE_END \

                .card_vendor = 0, .card_device = 0

struct isapnp_device_id {

        unsigned short card_vendor, card_device;

        unsigned short vendor, function;

        unsigned long driver_data;      /* data private to the driver */

};

#if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE))

#define __ISAPNP__

/* lowlevel configuration */

int isapnp_present(void);

int isapnp_cfg_begin(int csn, int device);

int isapnp_cfg_end(void);

unsigned char isapnp_read_byte(unsigned char idx);

void isapnp_write_byte(unsigned char idx, unsigned char val);

#ifdef CONFIG_PROC_FS

int isapnp_proc_init(void);

int isapnp_proc_done(void);

#else

static inline int isapnp_proc_init(void) { return 0; }

static inline int isapnp_proc_done(void) { return 0; }

#endif

/* compat */

struct pnp_card *pnp_find_card(unsigned short vendor,

                               unsigned short device,

                               struct pnp_card *from);

struct pnp_dev *pnp_find_dev(struct pnp_card *card,

                             unsigned short vendor,

                             unsigned short function,

                             struct pnp_dev *from);

#else /* !CONFIG_ISAPNP */

/* lowlevel configuration */

static inline int isapnp_present(void) { return 0; }

static inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; }

static inline int isapnp_cfg_end(void) { return -ENODEV; }

static inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; }

static inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; }

static inline struct pnp_card *pnp_find_card(unsigned short vendor,

                                             unsigned short device,

                                             struct pnp_card *from) { return NULL; }

static inline struct pnp_dev *pnp_find_dev(struct pnp_card *card,

                                           unsigned short vendor,

                                           unsigned short function,

                                           struct pnp_dev *from) { return NULL; }

#endif /* CONFIG_ISAPNP */

#endif /* __KERNEL__ */

#endif /* LINUX_ISAPNP_H */