101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* ISA Plug & Play support
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* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
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*/
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#ifndef LINUX_ISAPNP_H
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#define LINUX_ISAPNP_H
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#include <linux/errno.h>
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#include <linux/pnp.h>
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/*
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*
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*/
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#define ISAPNP_VENDOR(a,b,c) (((((a)-'A'+1)&0x3f)<<2)|\
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((((b)-'A'+1)&0x18)>>3)|((((b)-'A'+1)&7)<<13)|\
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((((c)-'A'+1)&0x1f)<<8))
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#define ISAPNP_DEVICE(x) ((((x)&0xf000)>>8)|\
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(((x)&0x0f00)>>8)|\
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(((x)&0x00f0)<<8)|\
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(((x)&0x000f)<<8))
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#define ISAPNP_FUNCTION(x) ISAPNP_DEVICE(x)
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/*
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*
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*/
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#ifdef __KERNEL__
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#include <linux/mod_devicetable.h>
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#define DEVICE_COUNT_COMPATIBLE 4
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#define ISAPNP_CARD_DEVS 8
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#define ISAPNP_CARD_ID(_va, _vb, _vc, _device) \
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.card_vendor = ISAPNP_VENDOR(_va, _vb, _vc), .card_device = ISAPNP_DEVICE(_device)
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#define ISAPNP_CARD_END \
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.card_vendor = 0, .card_device = 0
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#define ISAPNP_DEVICE_ID(_va, _vb, _vc, _function) \
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{ .vendor = ISAPNP_VENDOR(_va, _vb, _vc), .function = ISAPNP_FUNCTION(_function) }
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struct isapnp_card_id {
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unsigned long driver_data; /* data private to the driver */
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unsigned short card_vendor, card_device;
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struct {
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unsigned short vendor, function;
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} devs[ISAPNP_CARD_DEVS]; /* logical devices */
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};
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#define ISAPNP_DEVICE_SINGLE(_cva, _cvb, _cvc, _cdevice, _dva, _dvb, _dvc, _dfunction) \
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.card_vendor = ISAPNP_VENDOR(_cva, _cvb, _cvc), .card_device = ISAPNP_DEVICE(_cdevice), \
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.vendor = ISAPNP_VENDOR(_dva, _dvb, _dvc), .function = ISAPNP_FUNCTION(_dfunction)
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#define ISAPNP_DEVICE_SINGLE_END \
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.card_vendor = 0, .card_device = 0
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#if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE))
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#define __ISAPNP__
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/* lowlevel configuration */
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int isapnp_present(void);
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int isapnp_cfg_begin(int csn, int device);
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int isapnp_cfg_end(void);
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unsigned char isapnp_read_byte(unsigned char idx);
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void isapnp_write_byte(unsigned char idx, unsigned char val);
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#ifdef CONFIG_PROC_FS
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int isapnp_proc_init(void);
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int isapnp_proc_done(void);
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#else
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static inline int isapnp_proc_init(void) { return 0; }
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static inline int isapnp_proc_done(void) { return 0; }
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#endif
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/* compat */
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struct pnp_dev *pnp_find_dev(struct pnp_card *card,
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unsigned short vendor,
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unsigned short function,
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struct pnp_dev *from);
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#else /* !CONFIG_ISAPNP */
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/* lowlevel configuration */
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static inline int isapnp_present(void) { return 0; }
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static inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; }
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static inline int isapnp_cfg_end(void) { return -ENODEV; }
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static inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; }
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static inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; }
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static inline struct pnp_dev *pnp_find_dev(struct pnp_card *card,
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unsigned short vendor,
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unsigned short function,
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struct pnp_dev *from) { return NULL; }
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#endif /* CONFIG_ISAPNP */
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#endif /* __KERNEL__ */
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#endif /* LINUX_ISAPNP_H */
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