pxa_space.c revision 277460 
1/*	$NetBSD: obio_space.c,v 1.6 2003/07/15 00:25:05 lukem Exp $	*/
2
3/*-
4 * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed for the NetBSD Project by
20 *	Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 *    or promote products derived from this software without specific prior
23 *    written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38/*
39 * bus_space functions for PXA devices
40 */
41
42#include <sys/cdefs.h>
43__FBSDID("$FreeBSD: head/sys/arm/xscale/pxa/pxa_space.c 277460 2015-01-21 01:06:08Z ian $");
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <sys/bus.h>
48#include <sys/kernel.h>
49#include <sys/malloc.h>
50
51#include <machine/bus.h>
52
53#include <arm/xscale/pxa/pxareg.h>
54#include <arm/xscale/pxa/pxavar.h>
55
56static MALLOC_DEFINE(M_PXATAG, "PXA bus_space tags", "Bus_space tags for PXA");
57
58/* Prototypes for all the bus_space structure functions */
59bs_protos(generic);
60bs_protos(generic_armv4);
61bs_protos(pxa);
62
63/*
64 * The obio bus space tag.  This is constant for all instances, so
65 * we never have to explicitly "create" it.
66 */
67struct bus_space _base_tag = {
68	/* cookie */
69	(void *) 0,
70
71	/* mapping/unmapping */
72	generic_bs_map,
73	generic_bs_unmap,
74	generic_bs_subregion,
75
76	/* allocation/deallocation */
77	generic_bs_alloc,
78	generic_bs_free,
79
80	/* barrier */
81	generic_bs_barrier,
82
83	/* read (single) */
84	pxa_bs_r_1,
85	pxa_bs_r_2,
86	pxa_bs_r_4,
87	NULL,
88
89	/* read multiple */
90	pxa_bs_rm_1,
91	pxa_bs_rm_2,
92	NULL,
93	NULL,
94
95	/* read region */
96	pxa_bs_rr_1,
97	NULL,
98	NULL,
99	NULL,
100
101	/* write (single) */
102	pxa_bs_w_1,
103	pxa_bs_w_2,
104	pxa_bs_w_4,
105	NULL,
106
107	/* write multiple */
108	pxa_bs_wm_1,
109	pxa_bs_wm_2,
110	NULL,
111	NULL,
112
113	/* write region */
114	NULL,
115	NULL,
116	NULL,
117	NULL,
118
119	/* set multiple */
120	NULL,
121	NULL,
122	NULL,
123	NULL,
124
125	/* set region */
126	NULL,
127	NULL,
128	NULL,
129	NULL,
130
131	/* copy */
132	NULL,
133	NULL,
134	NULL,
135	NULL,
136};
137
138static struct bus_space	_obio_tag;
139
140bus_space_tag_t		base_tag = &_base_tag;
141bus_space_tag_t		obio_tag = NULL;
142
143void
144pxa_obio_tag_init()
145{
146
147	bcopy(&_base_tag, &_obio_tag, sizeof(struct bus_space));
148	_obio_tag.bs_privdata = (void *)PXA2X0_PERIPH_OFFSET;
149	obio_tag = &_obio_tag;
150}
151
152bus_space_tag_t
153pxa_bus_tag_alloc(bus_addr_t offset)
154{
155	struct	bus_space *tag;
156
157	tag = (struct bus_space *)malloc(sizeof(struct bus_space), M_PXATAG,
158	    M_WAITOK);
159	if (tag == NULL) {
160		return (NULL);
161	}
162
163	bcopy(&_base_tag, tag, sizeof(struct bus_space));
164	tag->bs_privdata = (void *)offset;
165
166	return ((bus_space_tag_t)tag);
167}
168
169
170#define	READ_SINGLE(type, proto, base)					\
171	type								\
172	proto(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset)	\
173	{								\
174		bus_addr_t	tag_offset;				\
175		type		value;					\
176		tag_offset = (bus_addr_t)tag->bs_privdata;		\
177		value = base(NULL, bsh + tag_offset, offset);		\
178		return (value);						\
179	}
180
181READ_SINGLE(u_int8_t,  pxa_bs_r_1, generic_bs_r_1)
182READ_SINGLE(u_int16_t, pxa_bs_r_2, generic_armv4_bs_r_2)
183READ_SINGLE(u_int32_t, pxa_bs_r_4, generic_bs_r_4)
184
185#undef READ_SINGLE
186
187#define	WRITE_SINGLE(type, proto, base)					\
188	void								\
189	proto(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset,	\
190	    type value)							\
191	{								\
192		bus_addr_t	tag_offset;				\
193		tag_offset = (bus_addr_t)tag->bs_privdata;		\
194		base(NULL, bsh + tag_offset, offset, value);		\
195	}
196
197WRITE_SINGLE(u_int8_t,  pxa_bs_w_1, generic_bs_w_1)
198WRITE_SINGLE(u_int16_t, pxa_bs_w_2, generic_armv4_bs_w_2)
199WRITE_SINGLE(u_int32_t, pxa_bs_w_4, generic_bs_w_4)
200
201#undef WRITE_SINGLE
202
203#define	READ_MULTI(type, proto, base)					\
204	void								\
205	proto(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset,	\
206	    type *dest, bus_size_t count)				\
207	{								\
208		bus_addr_t	tag_offset;				\
209		tag_offset = (bus_addr_t)tag->bs_privdata;		\
210		base(NULL, bsh + tag_offset, offset, dest, count);	\
211	}
212
213READ_MULTI(u_int8_t,  pxa_bs_rm_1, generic_bs_rm_1)
214READ_MULTI(u_int16_t, pxa_bs_rm_2, generic_armv4_bs_rm_2)
215
216READ_MULTI(u_int8_t,  pxa_bs_rr_1, generic_bs_rr_1)
217
218#undef READ_MULTI
219
220#define	WRITE_MULTI(type, proto, base)					\
221	void								\
222	proto(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset,	\
223	    const type *src, bus_size_t count)				\
224	{								\
225		bus_addr_t	tag_offset;				\
226		tag_offset = (bus_addr_t)tag->bs_privdata;		\
227		base(NULL, bsh + tag_offset, offset, src, count);	\
228	}
229
230WRITE_MULTI(u_int8_t,  pxa_bs_wm_1, generic_bs_wm_1)
231WRITE_MULTI(u_int16_t, pxa_bs_wm_2, generic_armv4_bs_wm_2)
232
233#undef WRITE_MULTI
234