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isapnp.h
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * ISA Plug & Play support * Copyright (c) by Jaroslav Kysela <perex@suse.cz> */ #ifndef LINUX_ISAPNP_H #define LINUX_ISAPNP_H #include <linux/errno.h> #include <linux/pnp.h> /* * */ #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__ #include <linux/mod_devicetable.h> #define DEVICE_COUNT_COMPATIBLE 4 #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) } 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 #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_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_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 */
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