pci_machdep.h revision 1.11 
1/*	$NetBSD: pci_machdep.h,v 1.11 2014/03/29 19:28:30 christos Exp $ */
2
3/*
4 * Copyright (c) 1999 Matthew R. Green
5 * 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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef _SPARC_PCI_MACHDEP_H_
30#define _SPARC_PCI_MACHDEP_H_
31
32/*
33 * Machine-specific definitions for PCI autoconfiguration.
34 */
35
36/*
37 * Types provided to machine-independent PCI code
38 */
39typedef struct sparc_pci_chipset *pci_chipset_tag_t;
40typedef u_int pci_intr_handle_t;
41typedef uint64_t pcitag_t;
42
43
44/*
45 * Forward declarations.
46 */
47struct pci_attach_args;
48
49
50/*
51 * sparc-specific PCI structure and type definitions.
52 * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
53 */
54struct sparc_pci_chipset {
55	void		*cookie;	/* msiiep_softc, but sssh! */
56};
57
58#define IS_PCI_BRIDGE(class) \
59	(((class >> 16) & 0xff) == PCI_CLASS_BRIDGE && \
60	    ((class >> 8) & 0xff) == PCI_SUBCLASS_BRIDGE_PCI)
61
62/*
63 * The MI PCI code expects pcitag_t to be a scalar type.  But besides
64 * the bus/device/function we need to store the OFW node as well.  We
65 * can squeeze them into a uint64_t with a little help from some
66 * macros.  And while we are at it mangle bus/device/function into a
67 * form directly suitable for pci mode1 configuration address port.
68 */
69#define	PCITAG_CREATE(n,b,d,f)	\
70	(((uint64_t)(n)<<32)|0x80000000U|((b)<<16)|((d)<<11)|((f)<<8)|(b?1:0))
71
72#define	PCITAG_NODE(t)		((uint32_t)(((t)>>32)&0xffffffff))
73#define	PCITAG_OFFSET(t)	((uint32_t)((t)&0xffffffff))
74#define PCITAG_BUS(t)		((PCITAG_OFFSET(t)>>16)&0xFF)
75#define PCITAG_DEV(t)		((PCITAG_OFFSET(t)>>11)&0x1F)
76#define PCITAG_FUN(t)		((PCITAG_OFFSET(t)>>8)&0x7)
77
78
79/*
80 * Functions provided to machine-independent PCI code.
81 */
82void		pci_attach_hook(device_t, device_t,
83				struct pcibus_attach_args *);
84int		pci_bus_maxdevs(pci_chipset_tag_t, int);
85pcitag_t	pci_make_tag(pci_chipset_tag_t, int, int, int);
86void		pci_decompose_tag(pci_chipset_tag_t, pcitag_t,
87				  int *, int *, int *);
88pcireg_t	pci_conf_read(pci_chipset_tag_t, pcitag_t, int);
89void		pci_conf_write(pci_chipset_tag_t, pcitag_t, int, pcireg_t);
90int		pci_intr_map(const struct pci_attach_args *,
91		             pci_intr_handle_t *);
92const char	*pci_intr_string(pci_chipset_tag_t, pci_intr_handle_t,
93				 char *, size_t);
94const struct evcnt *pci_intr_evcnt(pci_chipset_tag_t, pci_intr_handle_t);
95void		*pci_intr_establish(pci_chipset_tag_t, pci_intr_handle_t,
96				    int, int (*)(void *), void *);
97void		pci_intr_disestablish(pci_chipset_tag_t, void *);
98
99#endif /* _SPARC_PCI_MACHDEP_H_ */
100