source: rtems/c/src/lib/libbsp/powerpc/shared/bootloader/pci.h @ 65c6425

4.115
Last change on this file since 65c6425 was 65c6425, checked in by Joel Sherrill <joel.sherrill@…>, on May 3, 2012 at 5:24:46 PM

Remove CVS Id Strings (manual edits after script)

These modifications were required by hand after running the script.
In some cases, the file names did not match patterns. In others,
the format of the file did not match any common patterns.

  • Property mode set to 100644
File size: 3.4 KB
Line 
1/*
2 *      PCI defines and function prototypes
3 *      Copyright 1994, Drew Eckhardt
4 *      Copyright 1997, 1998 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
5 *
6 *      For more information, please consult the following manuals (look at
7 *      http://www.pcisig.com/ for how to get them):
8 *
9 *      PCI BIOS Specification
10 *      PCI Local Bus Specification
11 *      PCI to PCI Bridge Specification
12 *      PCI System Design Guide
13 */
14
15#ifndef BOOTLOADER_PCI_H
16#define BOOTLOADER_PCI_H
17
18#include <rtems/pci.h>
19
20
21/* Functions used to access pci configuration space */
22struct pci_bootloader_config_access_functions {
23        int (*read_config_byte)(unsigned char, unsigned char,
24                               unsigned char, uint8_t *);
25        int (*read_config_word)(unsigned char, unsigned char,
26                               unsigned char, uint16_t *);
27        int (*read_config_dword)(unsigned char, unsigned char,
28                               unsigned char, uint32_t *);
29        int (*write_config_byte)(unsigned char, unsigned char,
30                               unsigned char, uint8_t);
31        int (*write_config_word)(unsigned char, unsigned char,
32                               unsigned char, uint16_t);
33        int (*write_config_dword)(unsigned char, unsigned char,
34                               unsigned char, uint32_t);
35};
36
37/*
38 * There is one pci_dev structure for each slot-number/function-number
39 * combination:
40 */
41struct pci_dev {
42        struct pci_bus  *bus;           /* bus this device is on */
43        struct pci_dev  *sibling;       /* next device on this bus */
44        struct pci_dev  *next;          /* chain of all devices */
45
46        void            *sysdata;       /* hook for sys-specific extension */
47        struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */
48
49        unsigned int    devfn;          /* encoded device & function index */
50        unsigned short  vendor;
51        unsigned short  device;
52        unsigned int    class;          /* 3 bytes: (base,sub,prog-if) */
53        unsigned int    hdr_type;       /* PCI header type */
54        unsigned int    master : 1;     /* set if device is master capable */
55        /*
56         * In theory, the irq level can be read from configuration
57         * space and all would be fine.  However, old PCI chips don't
58         * support these registers and return 0 instead.  For example,
59         * the Vision864-P rev 0 chip can uses INTA, but returns 0 in
60         * the interrupt line and pin registers.  pci_init()
61         * initializes this field with the value at PCI_INTERRUPT_LINE
62         * and it is the job of pcibios_fixup() to change it if
63         * necessary.  The field must not be 0 unless the device
64         * cannot generate interrupts at all.
65         */
66        unsigned int    irq;            /* irq generated by this device */
67
68        /* Base registers for this device, can be adjusted by
69         * pcibios_fixup() as necessary.
70         */
71        unsigned long   base_address[6];
72        unsigned long   rom_address;
73};
74
75struct pci_bus {
76        struct pci_bus  *parent;        /* parent bus this bridge is on */
77        struct pci_bus  *children;      /* chain of P2P bridges on this bus */
78        struct pci_bus  *next;          /* chain of all PCI buses */
79
80        struct pci_dev  *self;          /* bridge device as seen by parent */
81        struct pci_dev  *devices;       /* devices behind this bridge */
82
83        void            *sysdata;       /* hook for sys-specific extension */
84        struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */
85
86        unsigned char   number;         /* bus number */
87        unsigned char   primary;        /* number of primary bridge */
88        unsigned char   secondary;      /* number of secondary bridge */
89        unsigned char   subordinate;    /* max number of subordinate buses */
90};
91
92extern struct pci_bus   pci_root;       /* root bus */
93extern struct pci_dev   *pci_devices;   /* list of all devices */
94
95#endif /* BOOTLOADER_PCI_H */
Note: See TracBrowser for help on using the repository browser.