1 /*

     2  *  ISA Plug & Play support

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

     4  *

     5  *

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

     7  *   it under the terms of the GNU General Public License as published by

     8  *   the Free Software Foundation; either version 2 of the License, or

     9  *   (at your option) any later version.

    10  *

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

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

    13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    14  *   GNU General Public License for more details.

    15  *

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

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

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

    19  *

    20  */

    21 

    22 #ifndef LINUX_ISAPNP_H

    23 #define LINUX_ISAPNP_H

    24 

    25 #include <linux/errno.h>

    26 #include <linux/pnp.h>

    27 

    28 /*

    29  *

    30  */

    31 

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

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

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

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

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

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

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

    39 #define ISAPNP_FUNCTION(x)	ISAPNP_DEVICE(x)

    40 

    41 /*

    42  *

    43  */

    44 

    45 #ifdef __KERNEL__

    46 

    47 #define DEVICE_COUNT_COMPATIBLE 4

    48 

    49 #define ISAPNP_ANY_ID		0xffff

    50 #define ISAPNP_CARD_DEVS	8

    51 

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

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

    54 #define ISAPNP_CARD_END \

    55 		.card_vendor = 0, .card_device = 0

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

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

    58 

    59 /* export used IDs outside module */

    60 #define ISAPNP_CARD_TABLE(name) \

    61 		MODULE_GENERIC_TABLE(isapnp_card, name)

    62 

    63 struct isapnp_card_id {

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

    65 	unsigned short card_vendor, card_device;

    66 	struct {

    67 		unsigned short vendor, function;

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

    69 };

    70 

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

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

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

    74 #define ISAPNP_DEVICE_SINGLE_END \

    75 		.card_vendor = 0, .card_device = 0

    76 

    77 struct isapnp_device_id {

    78 	unsigned short card_vendor, card_device;

    79 	unsigned short vendor, function;

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

    81 };

    82 

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

    84 

    85 #define __ISAPNP__

    86 

    87 /* lowlevel configuration */

    88 int isapnp_present(void);

    89 int isapnp_cfg_begin(int csn, int device);

    90 int isapnp_cfg_end(void);

    91 unsigned char isapnp_read_byte(unsigned char idx);

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

    93 

    94 #ifdef CONFIG_PROC_FS

    95 int isapnp_proc_init(void);

    96 int isapnp_proc_done(void);

    97 #else

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

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

   100 #endif

   101 

   102 /* compat */

   103 struct pnp_card *pnp_find_card(unsigned short vendor,

   104 			       unsigned short device,

   105 			       struct pnp_card *from);

   106 struct pnp_dev *pnp_find_dev(struct pnp_card *card,

   107 			     unsigned short vendor,

   108 			     unsigned short function,

   109 			     struct pnp_dev *from);

   110 

   111 #else /* !CONFIG_ISAPNP */

   112 

   113 /* lowlevel configuration */

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

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

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

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

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

   119 

   120 static inline struct pnp_card *pnp_find_card(unsigned short vendor,

   121 					     unsigned short device,

   122 					     struct pnp_card *from) { return NULL; }

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

   124 					   unsigned short vendor,

   125 					   unsigned short function,

   126 					   struct pnp_dev *from) { return NULL; }

   127 

   128 #endif /* CONFIG_ISAPNP */

   129 

   130 #endif /* __KERNEL__ */

   131 #endif /* LINUX_ISAPNP_H */