// SPDX-License-Identifier: GPL-2.0-or-later /* * ISA Plug & Play support * Copyright (c) by Jaroslav Kysela <[email protected]> * * Changelog: * 2000-01-01 Added quirks handling for buggy hardware * Peter Denison <[email protected]> * 2000-06-14 Added isapnp_probe_devs() and isapnp_activate_dev() * Christoph Hellwig <[email protected]> * 2001-06-03 Added release_region calls to correspond with * request_region calls when a failure occurs. Also * added KERN_* constants to printk() calls. * 2001-11-07 Added isapnp_{,un}register_driver calls along the lines * of the pci driver interface * Kai Germaschewski <[email protected]> * 2002-06-06 Made the use of dma channel 0 configurable * Gerald Teschl <[email protected]> * 2002-10-06 Ported to PnP Layer - Adam Belay <[email protected]> * 2003-08-11 Resource Management Updates - Adam Belay <[email protected]> */ #include <linux/moduleparam.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/delay.h> #include <linux/init.h> #include <linux/isapnp.h> #include <linux/mutex.h> #include <asm/io.h> #include "../base.h" #if 0 #define ISAPNP_REGION_OK #endif int isapnp_disable; /* Disable ISA PnP */ static int isapnp_rdp; /* Read Data Port */ static int isapnp_reset = …; /* reset all PnP cards (deactivate) */ static int isapnp_verbose = …; /* verbose mode */ module_param(isapnp_disable, int, 0); MODULE_PARM_DESC(…) …; module_param(isapnp_rdp, int, 0); MODULE_PARM_DESC(…) …; module_param(isapnp_reset, int, 0); MODULE_PARM_DESC(…) …; module_param(isapnp_verbose, int, 0); MODULE_PARM_DESC(…) …; #define _PIDXR … #define _PNPWRP … /* short tags */ #define _STAG_PNPVERNO … #define _STAG_LOGDEVID … #define _STAG_COMPATDEVID … #define _STAG_IRQ … #define _STAG_DMA … #define _STAG_STARTDEP … #define _STAG_ENDDEP … #define _STAG_IOPORT … #define _STAG_FIXEDIO … #define _STAG_VENDOR … #define _STAG_END … /* long tags */ #define _LTAG_MEMRANGE … #define _LTAG_ANSISTR … #define _LTAG_UNICODESTR … #define _LTAG_VENDOR … #define _LTAG_MEM32RANGE … #define _LTAG_FIXEDMEM32RANGE … /* Logical device control and configuration registers */ #define ISAPNP_CFG_ACTIVATE … #define ISAPNP_CFG_MEM … #define ISAPNP_CFG_PORT … #define ISAPNP_CFG_IRQ … #define ISAPNP_CFG_DMA … /* * Sizes of ISAPNP logical device configuration register sets. * See PNP-ISA-v1.0a.pdf, Appendix A. */ #define ISAPNP_MAX_MEM … #define ISAPNP_MAX_PORT … #define ISAPNP_MAX_IRQ … #define ISAPNP_MAX_DMA … static unsigned char isapnp_checksum_value; static DEFINE_MUTEX(isapnp_cfg_mutex); static int isapnp_csn_count; /* some prototypes */ static inline void write_data(unsigned char x) { … } static inline void write_address(unsigned char x) { … } static inline unsigned char read_data(void) { … } unsigned char isapnp_read_byte(unsigned char idx) { … } static unsigned short isapnp_read_word(unsigned char idx) { … } void isapnp_write_byte(unsigned char idx, unsigned char val) { … } static void isapnp_write_word(unsigned char idx, unsigned short val) { … } static void isapnp_key(void) { … } /* place all pnp cards in wait-for-key state */ static void isapnp_wait(void) { … } static void isapnp_wake(unsigned char csn) { … } static void isapnp_device(unsigned char logdev) { … } static void isapnp_activate(unsigned char logdev) { … } static void isapnp_deactivate(unsigned char logdev) { … } static void __init isapnp_peek(unsigned char *data, int bytes) { … } #define RDP_STEP … static int isapnp_next_rdp(void) { … } /* Set read port address */ static inline void isapnp_set_rdp(void) { … } /* * Perform an isolation. The port selection code now tries to avoid * "dangerous to read" ports. */ static int __init isapnp_isolate_rdp_select(void) { … } /* * Isolate (assign uniqued CSN) to all ISA PnP devices. */ static int __init isapnp_isolate(void) { … } /* * Read one tag from stream. */ static int __init isapnp_read_tag(unsigned char *type, unsigned short *size) { … } /* * Skip specified number of bytes from stream. */ static void __init isapnp_skip_bytes(int count) { … } /* * Parse logical device tag. */ static struct pnp_dev *__init isapnp_parse_device(struct pnp_card *card, int size, int number) { … } /* * Add IRQ resource to resources list. */ static void __init isapnp_parse_irq_resource(struct pnp_dev *dev, unsigned int option_flags, int size) { … } /* * Add DMA resource to resources list. */ static void __init isapnp_parse_dma_resource(struct pnp_dev *dev, unsigned int option_flags, int size) { … } /* * Add port resource to resources list. */ static void __init isapnp_parse_port_resource(struct pnp_dev *dev, unsigned int option_flags, int size) { … } /* * Add fixed port resource to resources list. */ static void __init isapnp_parse_fixed_port_resource(struct pnp_dev *dev, unsigned int option_flags, int size) { … } /* * Add memory resource to resources list. */ static void __init isapnp_parse_mem_resource(struct pnp_dev *dev, unsigned int option_flags, int size) { … } /* * Add 32-bit memory resource to resources list. */ static void __init isapnp_parse_mem32_resource(struct pnp_dev *dev, unsigned int option_flags, int size) { … } /* * Add 32-bit fixed memory resource to resources list. */ static void __init isapnp_parse_fixed_mem32_resource(struct pnp_dev *dev, unsigned int option_flags, int size) { … } /* * Parse card name for ISA PnP device. */ static void __init isapnp_parse_name(char *name, unsigned int name_max, unsigned short *size) { … } /* * Parse resource map for logical device. */ static int __init isapnp_create_device(struct pnp_card *card, unsigned short size) { … } /* * Parse resource map for ISA PnP card. */ static void __init isapnp_parse_resource_map(struct pnp_card *card) { … } /* * Build device list for all present ISA PnP devices. */ static int __init isapnp_build_device_list(void) { … } /* * Basic configuration routines. */ int isapnp_present(void) { … } int isapnp_cfg_begin(int csn, int logdev) { … } int isapnp_cfg_end(void) { … } /* * Initialization. */ EXPORT_SYMBOL(…); EXPORT_SYMBOL(…); EXPORT_SYMBOL(…); EXPORT_SYMBOL(…); EXPORT_SYMBOL(…); static int isapnp_get_resources(struct pnp_dev *dev) { … } static int isapnp_set_resources(struct pnp_dev *dev) { … } static int isapnp_disable_resources(struct pnp_dev *dev) { … } struct pnp_protocol isapnp_protocol = …; static int __init isapnp_init(void) { … } device_initcall(isapnp_init); /* format is: noisapnp */ static int __init isapnp_setup_disable(char *str) { … } __setup(…); /* format is: isapnp=rdp,reset,skip_pci_scan,verbose */ static int __init isapnp_setup_isapnp(char *str) { … } __setup(…);
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