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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1301 | jermar | 1 | /* |
| 2 | * The PCI Library |
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| 3 | * |
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| 4 | * Copyright (c) 1997--2005 Martin Mares <mj@ucw.cz> |
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| 5 | * |
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| 6 | * Modified and ported to HelenOS by Jakub Jermar. |
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| 7 | * |
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| 8 | * Can be freely distributed and used under the terms of the GNU GPL. |
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| 9 | */ |
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| 10 | |||
| 11 | #ifndef _PCI_LIB_H |
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| 12 | #define _PCI_LIB_H |
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| 13 | |||
| 14 | #include "header.h" |
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| 15 | #include "types.h" |
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| 16 | |||
| 17 | #define PCI_LIB_VERSION 0x020200 |
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| 18 | |||
| 19 | /* |
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| 20 | * PCI Access Structure |
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| 21 | */ |
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| 22 | |||
| 23 | struct pci_methods; |
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| 24 | |||
| 25 | enum pci_access_type { |
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| 26 | /* Known access methods, remember to update access.c as well */ |
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| 27 | PCI_ACCESS_I386_TYPE1, /* i386 ports, type 1 (params: none) */ |
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| 28 | PCI_ACCESS_I386_TYPE2, /* i386 ports, type 2 (params: none) */ |
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| 29 | PCI_ACCESS_MAX |
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| 30 | }; |
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| 31 | |||
| 32 | struct pci_access { |
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| 33 | /* Options you can change: */ |
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| 34 | unsigned int method; /* Access method */ |
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| 35 | char *method_params[PCI_ACCESS_MAX]; /* Parameters for the methods */ |
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| 36 | int writeable; /* Open in read/write mode */ |
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| 37 | int buscentric; /* Bus-centric view of the world */ |
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| 38 | int numeric_ids; /* Don't resolve device IDs to names */ |
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| 39 | int debugging; /* Turn on debugging messages */ |
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| 40 | |||
| 41 | /* Functions you can override: */ |
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| 42 | void (*error)(char *msg, ...); /* Write error message and quit */ |
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| 43 | void (*warning)(char *msg, ...); /* Write a warning message */ |
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| 44 | void (*debug)(char *msg, ...); /* Write a debugging message */ |
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| 45 | |||
| 46 | struct pci_dev *devices; /* Devices found on this bus */ |
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| 47 | |||
| 48 | /* Fields used internally: */ |
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| 49 | struct pci_methods *methods; |
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| 50 | struct id_entry **id_hash; /* names.c */ |
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| 51 | struct id_bucket *current_id_bucket; |
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| 52 | int fd; /* proc: fd */ |
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| 53 | int fd_rw; /* proc: fd opened read-write */ |
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| 54 | struct pci_dev *cached_dev; /* proc: device the fd is for */ |
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| 55 | int fd_pos; /* proc: current position */ |
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| 56 | }; |
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| 57 | |||
| 58 | /* Initialize PCI access */ |
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| 59 | struct pci_access *pci_alloc(void); |
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| 60 | void pci_init(struct pci_access *); |
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| 61 | void pci_cleanup(struct pci_access *); |
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| 62 | |||
| 63 | /* Scanning of devices */ |
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| 64 | void pci_scan_bus(struct pci_access *acc); |
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| 65 | struct pci_dev *pci_get_dev(struct pci_access *acc, int domain, int bus, int dev, int func); /* Raw access to specified device */ |
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| 66 | void pci_free_dev(struct pci_dev *); |
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| 67 | |||
| 68 | /* |
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| 69 | * Devices |
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| 70 | */ |
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| 71 | |||
| 72 | struct pci_dev { |
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| 73 | struct pci_dev *next; /* Next device in the chain */ |
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| 74 | u16 domain; /* PCI domain (host bridge) */ |
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| 75 | u8 bus, dev, func; /* Bus inside domain, device and function */ |
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| 76 | |||
| 77 | /* These fields are set by pci_fill_info() */ |
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| 78 | int known_fields; /* Set of info fields already known */ |
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| 79 | u16 vendor_id, device_id; /* Identity of the device */ |
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| 80 | int irq; /* IRQ number */ |
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| 81 | pciaddr_t base_addr[6]; /* Base addresses */ |
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| 82 | pciaddr_t size[6]; /* Region sizes */ |
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| 83 | pciaddr_t rom_base_addr; /* Expansion ROM base address */ |
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| 84 | pciaddr_t rom_size; /* Expansion ROM size */ |
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| 85 | |||
| 86 | /* Fields used internally: */ |
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| 87 | struct pci_access *access; |
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| 88 | struct pci_methods *methods; |
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| 89 | u8 *cache; /* Cached config registers */ |
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| 90 | int cache_len; |
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| 91 | int hdrtype; /* Cached low 7 bits of header type, -1 if unknown */ |
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| 92 | void *aux; /* Auxillary data */ |
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| 93 | }; |
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| 94 | |||
| 95 | #define PCI_ADDR_IO_MASK (~(pciaddr_t) 0x3) |
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| 96 | #define PCI_ADDR_MEM_MASK (~(pciaddr_t) 0xf) |
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| 97 | |||
| 98 | u8 pci_read_byte(struct pci_dev *, int pos); /* Access to configuration space */ |
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| 99 | u16 pci_read_word(struct pci_dev *, int pos); |
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| 100 | u32 pci_read_long(struct pci_dev *, int pos); |
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| 101 | int pci_read_block(struct pci_dev *, int pos, u8 *buf, int len); |
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| 102 | int pci_write_byte(struct pci_dev *, int pos, u8 data); |
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| 103 | int pci_write_word(struct pci_dev *, int pos, u16 data); |
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| 104 | int pci_write_long(struct pci_dev *, int pos, u32 data); |
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| 105 | int pci_write_block(struct pci_dev *, int pos, u8 *buf, int len); |
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| 106 | |||
| 107 | int pci_fill_info(struct pci_dev *, int flags); /* Fill in device information */ |
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| 108 | |||
| 109 | #define PCI_FILL_IDENT 1 |
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| 110 | #define PCI_FILL_IRQ 2 |
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| 111 | #define PCI_FILL_BASES 4 |
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| 112 | #define PCI_FILL_ROM_BASE 8 |
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| 113 | #define PCI_FILL_SIZES 16 |
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| 114 | #define PCI_FILL_RESCAN 0x10000 |
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| 115 | |||
| 116 | void pci_setup_cache(struct pci_dev *, u8 *cache, int len); |
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| 117 | |||
| 118 | /* |
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| 119 | * Filters |
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| 120 | */ |
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| 121 | |||
| 122 | struct pci_filter { |
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| 123 | int domain, bus, slot, func; /* -1 = ANY */ |
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| 124 | int vendor, device; |
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| 125 | }; |
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| 126 | |||
| 127 | void pci_filter_init(struct pci_access *, struct pci_filter *); |
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| 128 | char *pci_filter_parse_slot(struct pci_filter *, char *); |
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| 129 | char *pci_filter_parse_id(struct pci_filter *, char *); |
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| 130 | int pci_filter_match(struct pci_filter *, struct pci_dev *); |
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| 131 | |||
| 132 | /* |
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| 133 | * Conversion of PCI ID's to names (according to the pci.ids file) |
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| 134 | * |
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| 135 | * Call pci_lookup_name() to identify different types of ID's: |
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| 136 | * |
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| 137 | * VENDOR (vendorID) -> vendor |
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| 138 | * DEVICE (vendorID, deviceID) -> device |
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| 139 | * VENDOR | DEVICE (vendorID, deviceID) -> combined vendor and device |
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| 140 | * SUBSYSTEM | VENDOR (subvendorID) -> subsystem vendor |
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| 141 | * SUBSYSTEM | DEVICE (vendorID, deviceID, subvendorID, subdevID) -> subsystem device |
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| 142 | * SUBSYSTEM | VENDOR | DEVICE (vendorID, deviceID, subvendorID, subdevID) -> combined subsystem v+d |
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| 143 | * SUBSYSTEM | ... (-1, -1, subvendorID, subdevID) -> generic subsystem |
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| 144 | * CLASS (classID) -> class |
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| 145 | * PROGIF (classID, progif) -> programming interface |
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| 146 | */ |
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| 147 | |||
| 148 | char *pci_lookup_name(struct pci_access *a, char *buf, int size, int flags, ...); |
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| 149 | |||
| 150 | int pci_load_name_list(struct pci_access *a); /* Called automatically by pci_lookup_*() when needed; returns success */ |
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| 151 | void pci_free_name_list(struct pci_access *a); /* Called automatically by pci_cleanup() */ |
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| 152 | |||
| 153 | enum pci_lookup_mode { |
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| 154 | PCI_LOOKUP_VENDOR = 1, /* Vendor name (args: vendorID) */ |
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| 155 | PCI_LOOKUP_DEVICE = 2, /* Device name (args: vendorID, deviceID) */ |
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| 156 | PCI_LOOKUP_CLASS = 4, /* Device class (args: classID) */ |
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| 157 | PCI_LOOKUP_SUBSYSTEM = 8, |
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| 158 | PCI_LOOKUP_PROGIF = 16, /* Programming interface (args: classID, prog_if) */ |
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| 159 | PCI_LOOKUP_NUMERIC = 0x10000, /* Want only formatted numbers; default if access->numeric_ids is set */ |
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| 160 | PCI_LOOKUP_NO_NUMBERS = 0x20000 /* Return NULL if not found in the database; default is to print numerically */ |
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| 161 | }; |
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| 162 | |||
| 163 | #endif |