Annotation of sys/arch/i386/pci/pci_machdep.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: pci_machdep.h,v 1.11 2002/03/14 03:15:54 millert Exp $ */
2: /* $NetBSD: pci_machdep.h,v 1.7 1997/06/06 23:29:18 thorpej Exp $ */
3:
4: /*
5: * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
6: * Copyright (c) 1994 Charles Hannum. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by Charles Hannum.
19: * 4. The name of the author may not be used to endorse or promote products
20: * derived from this software without specific prior written permission.
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32: */
33:
34: /*
35: * Machine-specific definitions for PCI autoconfiguration.
36: */
37:
38: /*
39: * i386-specific PCI structure and type definitions.
40: * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
41: *
42: * Configuration tag; created from a {bus,device,function} triplet by
43: * pci_make_tag(), and passed to pci_conf_read() and pci_conf_write().
44: * We could instead always pass the {bus,device,function} triplet to
45: * the read and write routines, but this would cause extra overhead.
46: *
47: * Mode 2 is historical and deprecated by the Revision 2.0 specification.
48: */
49: union i386_pci_tag_u {
50: u_int32_t mode1;
51: struct {
52: u_int16_t port;
53: u_int8_t enable;
54: u_int8_t forward;
55: } mode2;
56: };
57:
58: extern struct i386_bus_dma_tag pci_bus_dma_tag;
59:
60: /*
61: * Types provided to machine-independent PCI code
62: */
63: typedef void *pci_chipset_tag_t;
64: typedef union i386_pci_tag_u pcitag_t;
65:
66: typedef
67: struct {
68: pcitag_t tag;
69: int line, pin;
70: void *link;
71: } pci_intr_handle_t;
72:
73: /*
74: * i386-specific PCI variables and functions.
75: * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
76: */
77: extern int pci_mode;
78: int pci_mode_detect(void);
79:
80: /*
81: * Functions provided to machine-independent PCI code.
82: */
83: void pci_attach_hook(struct device *, struct device *,
84: struct pcibus_attach_args *);
85: int pci_bus_maxdevs(pci_chipset_tag_t, int);
86: pcitag_t pci_make_tag(pci_chipset_tag_t, int, int, int);
87: pcireg_t pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
88: void pci_conf_write(pci_chipset_tag_t, pcitag_t, int,
89: pcireg_t);
90: struct pci_attach_args;
91: int pci_intr_map(struct pci_attach_args *,
92: pci_intr_handle_t *);
93: #define pci_intr_line(ih) ((ih).line)
94: const char *pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t);
95: void *pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
96: int, int (*)(void *), void *, char *);
97: void pci_intr_disestablish(pci_chipset_tag_t, void *);
98: void pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
99: int *, int *, int *);
100:
101: /*
102: * Section 6.2.4, `Miscellaneous Functions' of the PIC Specification,
103: * says that 255 means `unknown' or `no connection' to the interrupt
104: * controller on a PC.
105: */
106: #define I386_PCI_INTERRUPT_LINE_NO_CONNECTION 0xff
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