1 /* $NetBSD: s3c2xx0_space.c,v 1.7 2005/11/24 13:08:32 yamt Exp $ */
2
3 /*
4 * Copyright (c) 2002 Fujitsu Component Limited
5 * Copyright (c) 2002 Genetec Corporation
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of The Fujitsu Component Limited nor the name of
17 * Genetec corporation may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC
21 * CORPORATION ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
22 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED. IN NO EVENT SHALL FUJITSU COMPONENT LIMITED OR GENETEC
25 * CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
28 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
29 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34 /* derived from sa11x0_io.c */
35
36 /*
37 * Copyright (c) 1997 Mark Brinicombe.
38 * Copyright (c) 1997 Causality Limited.
39 * All rights reserved.
40 *
41 * This code is derived from software contributed to The NetBSD Foundation
42 * by Ichiro FUKUHARA.
43 *
44 * Redistribution and use in source and binary forms, with or without
45 * modification, are permitted provided that the following conditions
46 * are met:
47 * 1. Redistributions of source code must retain the above copyright
48 * notice, this list of conditions and the following disclaimer.
49 * 2. Redistributions in binary form must reproduce the above copyright
50 * notice, this list of conditions and the following disclaimer in the
51 * documentation and/or other materials provided with the distribution.
52 * 3. All advertising materials mentioning features or use of this software
53 * must display the following acknowledgement:
54 * This product includes software developed by Mark Brinicombe.
55 * 4. The name of the company nor the name of the author may be used to
56 * endorse or promote products derived from this software without specific
57 * prior written permission.
58 *
59 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
60 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
61 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
62 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
63 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
64 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
65 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
69 * SUCH DAMAGE.
70 */
71
72 /*
73 * bus_space functions for Samsung S3C2800/2400/2410.
74 */
75
76 #include <sys/cdefs.h>
77 __FBSDID("$FreeBSD: releng/9.1/sys/arm/s3c2xx0/s3c2xx0_space.c 210396 2010-07-22 23:12:19Z andrew $");
78
79 #include <sys/param.h>
80 #include <sys/systm.h>
81 #include <sys/bus.h>
82
83 #include <vm/vm.h>
84 #include <vm/vm_kern.h>
85 #include <vm/pmap.h>
86 #include <vm/vm_page.h>
87 #include <vm/vm_extern.h>
88
89 #include <machine/bus.h>
90
91 /* Prototypes for all the bus_space structure functions */
92 bs_protos(s3c2xx0);
93 bs_protos(generic);
94 bs_protos(generic_armv4);
95
96 struct bus_space s3c2xx0_bs_tag = {
97 /* cookie */
98 (void *) 0,
99
100 /* mapping/unmapping */
101 s3c2xx0_bs_map,
102 s3c2xx0_bs_unmap,
103 s3c2xx0_bs_subregion,
104
105 /* allocation/deallocation */
106 s3c2xx0_bs_alloc, /* not implemented */
107 s3c2xx0_bs_free, /* not implemented */
108
109 /* barrier */
110 s3c2xx0_bs_barrier,
111
112 /* read (single) */
113 generic_bs_r_1,
114 generic_armv4_bs_r_2,
115 generic_bs_r_4,
116 NULL,
117
118 /* read multiple */
119 generic_bs_rm_1,
120 generic_armv4_bs_rm_2,
121 generic_bs_rm_4,
122 NULL,
123
124 /* read region */
125 generic_bs_rr_1,
126 generic_armv4_bs_rr_2,
127 generic_bs_rr_4,
128 NULL,
129
130 /* write (single) */
131 generic_bs_w_1,
132 generic_armv4_bs_w_2,
133 generic_bs_w_4,
134 NULL,
135
136 /* write multiple */
137 generic_bs_wm_1,
138 generic_armv4_bs_wm_2,
139 generic_bs_wm_4,
140 NULL,
141
142 /* write region */
143 generic_bs_wr_1,
144 generic_armv4_bs_wr_2,
145 generic_bs_wr_4,
146 NULL,
147
148 /* set multiple */
149 NULL,
150 NULL,
151 NULL,
152 NULL,
153
154 /* set region */
155 generic_bs_sr_1,
156 generic_armv4_bs_sr_2,
157 NULL,
158 NULL,
159
160 /* copy */
161 NULL,
162 generic_armv4_bs_c_2,
163 NULL,
164 NULL,
165 };
166
167 int
168 s3c2xx0_bs_map(void *t, bus_addr_t bpa, bus_size_t size,
169 int flag, bus_space_handle_t * bshp)
170 {
171 u_long startpa, endpa, pa;
172 vm_offset_t va;
173 pt_entry_t *pte;
174 const struct pmap_devmap *pd;
175
176 if ((pd = pmap_devmap_find_pa(bpa, size)) != NULL) {
177 /* Device was statically mapped. */
178 *bshp = pd->pd_va + (bpa - pd->pd_pa);
179 return 0;
180 }
181
182 startpa = trunc_page(bpa);
183 endpa = round_page(bpa + size);
184
185 va = kmem_alloc_nofault(kernel_map, endpa - startpa);
186 if (!va)
187 return (ENOMEM);
188
189 *bshp = (bus_space_handle_t) (va + (bpa - startpa));
190
191 for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) {
192 pmap_kenter(va, pa);
193 pte = vtopte(va);
194 if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0)
195 *pte &= ~L2_S_CACHE_MASK;
196 }
197 return (0);
198 }
199
200 void
201 s3c2xx0_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
202 {
203 vm_offset_t va, endva;
204
205 if (pmap_devmap_find_va((vm_offset_t)t, size) != NULL) {
206 /* Device was statically mapped; nothing to do. */
207 return;
208 }
209
210 endva = round_page((vm_offset_t)t + size);
211 va = trunc_page((vm_offset_t)t);
212
213 while (va < endva) {
214 pmap_kremove(va);
215 va += PAGE_SIZE;
216 }
217 kmem_free(kernel_map, va, endva - va);
218 }
219
220 int
221 s3c2xx0_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
222 bus_size_t size, bus_space_handle_t * nbshp)
223 {
224
225 *nbshp = bsh + offset;
226 return (0);
227 }
228
229 void
230 s3c2xx0_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
231 bus_size_t len, int flags)
232 {
233
234 /* Nothing to do. */
235 }
236
237 int
238 s3c2xx0_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
239 bus_size_t size, bus_size_t alignment, bus_size_t boundary,
240 int flags, bus_addr_t * bpap, bus_space_handle_t * bshp)
241 {
242
243 panic("s3c2xx0_io_bs_alloc(): not implemented\n");
244 }
245
246 void
247 s3c2xx0_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
248 {
249 panic("s3c2xx0_io_bs_free(): not implemented\n");
250 }
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