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: releng/10.0/sys/arm/xscale/pxa/pxa_space.c 227293 2011-11-07 06:44:47Z ed $");
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
56 static MALLOC_DEFINE(M_PXATAG, "PXA bus_space tags", "Bus_space tags for PXA");
57
58 /* Prototypes for all the bus_space structure functions */
59 bs_protos(generic);
60 bs_protos(generic_armv4);
61 bs_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 */
67 struct 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
138 static struct bus_space _obio_tag;
139
140 bus_space_tag_t base_tag = &_base_tag;
141 bus_space_tag_t obio_tag = NULL;
142
143 void
144 pxa_obio_tag_init()
145 {
146
147 bcopy(&_base_tag, &_obio_tag, sizeof(struct bus_space));
148 _obio_tag.bs_cookie = (void *)PXA2X0_PERIPH_OFFSET;
149 obio_tag = &_obio_tag;
150 }
151
152 bus_space_tag_t
153 pxa_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_cookie = (void *)offset;
165
166 return ((bus_space_tag_t)tag);
167 }
168
169
170 #define READ_SINGLE(type, proto, base) \
171 type \
172 proto(void *cookie, 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)cookie; \
177 value = base(NULL, bsh + tag_offset, offset); \
178 return (value); \
179 }
180
181 READ_SINGLE(u_int8_t, pxa_bs_r_1, generic_bs_r_1)
182 READ_SINGLE(u_int16_t, pxa_bs_r_2, generic_armv4_bs_r_2)
183 READ_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(void *cookie, 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)cookie; \
194 base(NULL, bsh + tag_offset, offset, value); \
195 }
196
197 WRITE_SINGLE(u_int8_t, pxa_bs_w_1, generic_bs_w_1)
198 WRITE_SINGLE(u_int16_t, pxa_bs_w_2, generic_armv4_bs_w_2)
199 WRITE_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(void *cookie, 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)cookie; \
210 base(NULL, bsh + tag_offset, offset, dest, count); \
211 }
212
213 READ_MULTI(u_int8_t, pxa_bs_rm_1, generic_bs_rm_1)
214 READ_MULTI(u_int16_t, pxa_bs_rm_2, generic_armv4_bs_rm_2)
215
216 READ_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(void *cookie, 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)cookie; \
227 base(NULL, bsh + tag_offset, offset, src, count); \
228 }
229
230 WRITE_MULTI(u_int8_t, pxa_bs_wm_1, generic_bs_wm_1)
231 WRITE_MULTI(u_int16_t, pxa_bs_wm_2, generic_armv4_bs_wm_2)
232
233 #undef WRITE_MULTI
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