xref: /freebsd/sys/powerpc/mpc85xx/lbc.h (revision 7aa383846770374466b1dcb2cefd71bde9acf463)
1 /*-
2  * Copyright (c) 2006-2008, Juniper Networks, Inc.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  * $FreeBSD$
27  */
28 
29 #ifndef _MACHINE_LBC_H_
30 #define	_MACHINE_LBC_H_
31 
32 /* Maximum number of devices on Local Bus */
33 #define	LBC_DEV_MAX	8
34 
35 /* Local access registers */
36 #define	LBC85XX_BR(n)	(8 * n)
37 #define	LBC85XX_OR(n)	(4 + (8 * n))
38 #define	LBC85XX_LBCR	(0xd0)
39 #define	LBC85XX_LCRR	(0xd4)
40 
41 /* LBC machine select */
42 #define	LBCRES_MSEL_GPCM	0
43 #define	LBCRES_MSEL_FCM		1
44 #define	LBCRES_MSEL_UPMA	8
45 #define	LBCRES_MSEL_UPMB	9
46 #define	LBCRES_MSEL_UPMC	10
47 
48 /* LBC data error checking modes */
49 #define	LBCRES_DECC_DISABLED	0
50 #define	LBCRES_DECC_NORMAL	1
51 #define	LBCRES_DECC_RMW		2
52 
53 /* LBC atomic operation modes */
54 #define	LBCRES_ATOM_DISABLED	0
55 #define	LBCRES_ATOM_RAWA	1
56 #define	LBCRES_ATOM_WARA	2
57 
58 struct lbc_bank {
59 	u_long		pa;		/* physical addr of the bank */
60 	u_long		size;		/* bank size */
61 	vm_offset_t	va;		/* VA of the bank */
62 
63 	/*
64 	 * XXX the following bank attributes do not have properties specified
65 	 * in the LBC DTS bindings yet (11.2009), so they are mainly a
66 	 * placeholder for future extensions.
67 	 */
68 	int		width;		/* data bus width */
69 	uint8_t		msel;		/* machine select */
70 	uint8_t		atom;		/* atomic op mode */
71 	uint8_t		wp;		/* write protect */
72 	uint8_t		decc;		/* data error checking */
73 };
74 
75 struct lbc_softc {
76 	device_t		sc_dev;
77 	struct resource		*sc_res;
78 	bus_space_handle_t	sc_bsh;
79 	bus_space_tag_t		sc_bst;
80 	int			sc_rid;
81 
82 	struct rman		sc_rman;
83 
84 	int			sc_addr_cells;
85 	int			sc_size_cells;
86 
87 	struct lbc_bank		sc_banks[LBC_DEV_MAX];
88 };
89 
90 struct lbc_devinfo {
91 	struct ofw_bus_devinfo	di_ofw;
92 	struct resource_list	di_res;
93 	int			di_bank;
94 };
95 
96 #endif /* _MACHINE_LBC_H_ */
97