Annotation of src/sys/dev/pci/pcivar.h, Revision 1.50.2.3
1.50.2.3! gehenna 1: /* $NetBSD: pcivar.h,v 1.50.2.2 2002/06/20 16:33:49 gehenna Exp $ */
1.50.2.2 gehenna 2:
3: /*
4: * Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved.
5: * Copyright (c) 1994 Charles M. Hannum. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by Charles M. Hannum.
18: * 4. The name of the author may not be used to endorse or promote products
19: * derived from this software without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31: */
32:
33: #ifndef _DEV_PCI_PCIVAR_H_
34: #define _DEV_PCI_PCIVAR_H_
35:
36: /*
37: * Definitions for PCI autoconfiguration.
38: *
39: * This file describes types and functions which are used for PCI
40: * configuration. Some of this information is machine-specific, and is
41: * provided by pci_machdep.h.
42: */
43:
44: #include <sys/device.h>
45: #include <machine/bus.h>
46: #include <dev/pci/pcireg.h>
47:
48: /*
49: * Structures and definitions needed by the machine-dependent header.
50: */
51: typedef u_int32_t pcireg_t; /* configuration space register XXX */
52: struct pcibus_attach_args;
53: struct pci_softc;
54:
55: #ifdef _KERNEL
56: /*
57: * Machine-dependent definitions.
58: */
59: #include <machine/pci_machdep.h>
60:
61: /*
62: * PCI bus attach arguments.
63: */
64: struct pcibus_attach_args {
65: char *pba_busname; /* XXX should be common */
66: bus_space_tag_t pba_iot; /* pci i/o space tag */
67: bus_space_tag_t pba_memt; /* pci mem space tag */
68: bus_dma_tag_t pba_dmat; /* DMA tag */
69: pci_chipset_tag_t pba_pc;
70: int pba_flags; /* flags; see below */
71:
72: int pba_bus; /* PCI bus number */
73:
74: /*
75: * Pointer to the pcitag of our parent bridge. If there is no
76: * parent bridge, then we assume we are a root bus.
77: */
78: pcitag_t *pba_bridgetag;
79:
80: /*
81: * Interrupt swizzling information. These fields
82: * are only used by secondary busses.
83: */
84: u_int pba_intrswiz; /* how to swizzle pins */
85: pcitag_t pba_intrtag; /* intr. appears to come from here */
86: };
87:
88: /*
89: * PCI device attach arguments.
90: */
91: struct pci_attach_args {
92: bus_space_tag_t pa_iot; /* pci i/o space tag */
93: bus_space_tag_t pa_memt; /* pci mem space tag */
94: bus_dma_tag_t pa_dmat; /* DMA tag */
95: pci_chipset_tag_t pa_pc;
96: int pa_flags; /* flags; see below */
97:
98: u_int pa_bus;
99: u_int pa_device;
100: u_int pa_function;
101: pcitag_t pa_tag;
102: pcireg_t pa_id, pa_class;
103:
104: /*
105: * Interrupt information.
106: *
107: * "Intrline" is used on systems whose firmware puts
108: * the right routing data into the line register in
109: * configuration space. The rest are used on systems
110: * that do not.
111: */
112: u_int pa_intrswiz; /* how to swizzle pins if ppb */
113: pcitag_t pa_intrtag; /* intr. appears to come from here */
114: pci_intr_pin_t pa_intrpin; /* intr. appears on this pin */
115: pci_intr_line_t pa_intrline; /* intr. routing information */
116: pci_intr_pin_t pa_rawintrpin; /* unswizzled pin */
117: };
118:
119: /*
120: * Flags given in the bus and device attachment args.
121: */
122: #define PCI_FLAGS_IO_ENABLED 0x01 /* I/O space is enabled */
123: #define PCI_FLAGS_MEM_ENABLED 0x02 /* memory space is enabled */
124: #define PCI_FLAGS_MRL_OKAY 0x04 /* Memory Read Line okay */
125: #define PCI_FLAGS_MRM_OKAY 0x08 /* Memory Read Multiple okay */
126: #define PCI_FLAGS_MWI_OKAY 0x10 /* Memory Write and Invalidate
127: okay */
128:
129: /*
130: * PCI device 'quirks'.
131: *
132: * In general strange behaviour which can be handled by a driver (e.g.
133: * a bridge's inability to pass a type of access correctly) should be.
134: * The quirks table should only contain information which impacts
135: * the operation of the MI PCI code and which can't be pushed lower
136: * (e.g. because it's unacceptable to require a driver to be present
137: * for the information to be known).
138: */
139: struct pci_quirkdata {
140: pci_vendor_id_t vendor; /* Vendor ID */
141: pci_product_id_t product; /* Product ID */
142: int quirks; /* quirks; see below */
143: };
144: #define PCI_QUIRK_MULTIFUNCTION 1
145:
146: #include "locators.h"
147:
148: struct pci_softc {
149: struct device sc_dev;
150: bus_space_tag_t sc_iot, sc_memt;
151: bus_dma_tag_t sc_dmat;
152: pci_chipset_tag_t sc_pc;
153: int sc_bus, sc_maxndevs;
154: pcitag_t *sc_bridgetag;
155: u_int sc_intrswiz;
156: pcitag_t sc_intrtag;
157: int sc_flags;
158: };
159:
160: extern struct cfdriver pci_cd;
161:
162: /*
163: * Locators devices that attach to 'pcibus', as specified to config.
164: */
165: #define pcibuscf_bus cf_loc[PCIBUSCF_BUS]
166: #define PCIBUS_UNK_BUS PCIBUSCF_BUS_DEFAULT /* wildcarded 'bus' */
167:
168: /*
169: * Locators for PCI devices, as specified to config.
170: */
171: #define pcicf_dev cf_loc[PCICF_DEV]
172: #define PCI_UNK_DEV PCICF_DEV_DEFAULT /* wildcarded 'dev' */
173:
174: #define pcicf_function cf_loc[PCICF_FUNCTION]
175: #define PCI_UNK_FUNCTION PCICF_FUNCTION_DEFAULT /* wildcarded 'function' */
176:
177: /*
178: * Configuration space access and utility functions. (Note that most,
179: * e.g. make_tag, conf_read, conf_write are declared by pci_machdep.h.)
180: */
1.50.2.3! gehenna 181: int pci_mapreg_probe __P((pci_chipset_tag_t, pcitag_t, int, pcireg_t *));
1.50.2.2 gehenna 182: pcireg_t pci_mapreg_type __P((pci_chipset_tag_t, pcitag_t, int));
183: int pci_mapreg_info __P((pci_chipset_tag_t, pcitag_t, int, pcireg_t,
184: bus_addr_t *, bus_size_t *, int *));
185: int pci_mapreg_map __P((struct pci_attach_args *, int, pcireg_t, int,
186: bus_space_tag_t *, bus_space_handle_t *, bus_addr_t *,
187: bus_size_t *));
188:
189: int pci_get_capability __P((pci_chipset_tag_t, pcitag_t, int,
190: int *, pcireg_t *));
191:
192: /*
193: * Helper functions for autoconfiguration.
194: */
195: int pci_enumerate_bus_generic(struct pci_softc *,
196: int (*)(struct pci_attach_args *), struct pci_attach_args *);
197: int pci_probe_device(struct pci_softc *, pcitag_t tag,
198: int (*)(struct pci_attach_args *), struct pci_attach_args *);
199: void pci_devinfo __P((pcireg_t, pcireg_t, int, char *));
200: void pci_conf_print __P((pci_chipset_tag_t, pcitag_t,
201: void (*)(pci_chipset_tag_t, pcitag_t, const pcireg_t *)));
202: const struct pci_quirkdata *
203: pci_lookup_quirkdata __P((pci_vendor_id_t, pci_product_id_t));
204:
205: /*
206: * Helper functions for user access to the PCI bus.
207: */
208: struct proc;
209: int pci_devioctl __P((pci_chipset_tag_t, pcitag_t, u_long, caddr_t,
210: int flag, struct proc *));
211:
212: /*
213: * Misc.
214: */
215: char *pci_findvendor __P((pcireg_t));
216: int pci_find_device(struct pci_attach_args *pa,
217: int (*match)(struct pci_attach_args *));
218:
219: #endif /* _KERNEL */
220:
221: #endif /* _DEV_PCI_PCIVAR_H_ */
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