1 /* $OpenBSD: armv7_space.c,v 1.11 2022/03/06 12:16:27 kettenis Exp $ */
2
3 /*
4 * Copyright (c) 2001, 2002 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 * Copyright (c) 1997 Mark Brinicombe.
39 * Copyright (c) 1997 Causality Limited.
40 * All rights reserved.
41 *
42 * This code is derived from software contributed to The NetBSD Foundation
43 * by Ichiro FUKUHARA.
44 *
45 * Redistribution and use in source and binary forms, with or without
46 * modification, are permitted provided that the following conditions
47 * are met:
48 * 1. Redistributions of source code must retain the above copyright
49 * notice, this list of conditions and the following disclaimer.
50 * 2. Redistributions in binary form must reproduce the above copyright
51 * notice, this list of conditions and the following disclaimer in the
52 * documentation and/or other materials provided with the distribution.
53 * 3. All advertising materials mentioning features or use of this software
54 * must display the following acknowledgement:
55 * This product includes software developed by Mark Brinicombe.
56 * 4. The name of the company nor the name of the author may be used to
57 * endorse or promote products derived from this software without specific
58 * prior written permission.
59 *
60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
61 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
62 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
63 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
64 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
65 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
66 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
70 * SUCH DAMAGE.
71 */
72
73 /*
74 * bus_space functions for Intel PXA2[51]0 application processor.
75 * Derived from i80321_space.c.
76 */
77
78 #include <sys/param.h>
79 #include <sys/systm.h>
80
81 #include <uvm/uvm_extern.h>
82
83 #include <machine/bus.h>
84
85 /* Prototypes for all the bus_space structure functions */
86 bs_protos(armv7);
87 bs_protos(generic);
88 bs_protos(bs_notimpl);
89
90 struct bus_space armv7_bs_tag = {
91 /* cookie */
92 (void *) 0,
93
94 /* mapping/unmapping */
95 armv7_bs_map,
96 armv7_bs_unmap,
97 armv7_bs_subregion,
98
99 /* allocation/deallocation */
100 armv7_bs_alloc, /* not implemented */
101 armv7_bs_free, /* not implemented */
102
103 /* get kernel virtual address */
104 armv7_bs_vaddr,
105
106 /* mmap */
107 bs_notimpl_bs_mmap,
108
109 /* barrier */
110 armv7_bs_barrier,
111
112 /* read (single) */
113 armv7_bs_r_1,
114 armv7_bs_r_2,
115 armv7_bs_r_4,
116 bs_notimpl_bs_r_8,
117
118 /* read multiple */
119 armv7_bs_rm_1,
120 armv7_bs_rm_2,
121 armv7_bs_rm_4,
122 bs_notimpl_bs_rm_8,
123
124 /* read region */
125 armv7_bs_rr_1,
126 armv7_bs_rr_2,
127 armv7_bs_rr_4,
128 bs_notimpl_bs_rr_8,
129
130 /* write (single) */
131 armv7_bs_w_1,
132 armv7_bs_w_2,
133 armv7_bs_w_4,
134 bs_notimpl_bs_w_8,
135
136 /* write multiple */
137 armv7_bs_wm_1,
138 armv7_bs_wm_2,
139 armv7_bs_wm_4,
140 bs_notimpl_bs_wm_8,
141
142 /* write region */
143 armv7_bs_wr_1,
144 armv7_bs_wr_2,
145 armv7_bs_wr_4,
146 bs_notimpl_bs_wr_8,
147
148 /* set multiple */
149 bs_notimpl_bs_sm_1,
150 bs_notimpl_bs_sm_2,
151 bs_notimpl_bs_sm_4,
152 bs_notimpl_bs_sm_8,
153
154 /* set region */
155 armv7_bs_sr_1,
156 armv7_bs_sr_2,
157 armv7_bs_sr_4,
158 bs_notimpl_bs_sr_8,
159
160 /* copy */
161 bs_notimpl_bs_c_1,
162 armv7_bs_c_2,
163 bs_notimpl_bs_c_4,
164 bs_notimpl_bs_c_8,
165 };
166 struct bus_space *fdt_cons_bs_tag = &armv7_bs_tag;
167
168 int
armv7_bs_map(void * t,uint64_t bpa,bus_size_t size,int flags,bus_space_handle_t * bshp)169 armv7_bs_map(void *t, uint64_t bpa, bus_size_t size,
170 int flags, bus_space_handle_t *bshp)
171 {
172 u_long startpa, endpa, pa;
173 vaddr_t va;
174 int pmap_flags = PMAP_DEVICE;
175
176 startpa = trunc_page(bpa);
177 endpa = round_page(bpa + size);
178
179 /* XXX use extent manager to check duplicate mapping */
180
181 va = (vaddr_t)km_alloc(endpa - startpa, &kv_any, &kp_none, &kd_nowait);
182 if (va == 0)
183 return(ENOMEM);
184
185 *bshp = (bus_space_handle_t)(va + (bpa - startpa));
186
187 if (flags & BUS_SPACE_MAP_CACHEABLE)
188 pmap_flags = 0;
189
190 for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE)
191 pmap_kenter_pa(va, pa | pmap_flags, PROT_READ | PROT_WRITE);
192 pmap_update(pmap_kernel());
193
194 return(0);
195 }
196
197 void
armv7_bs_unmap(void * t,bus_space_handle_t bsh,bus_size_t size)198 armv7_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
199 {
200 vaddr_t va, endva;
201
202 va = trunc_page((vaddr_t)bsh);
203 endva = round_page((vaddr_t)bsh + size);
204
205 pmap_kremove(va, endva - va);
206 pmap_update(pmap_kernel());
207
208 km_free((void *)va, endva - va, &kv_any, &kp_none);
209 }
210
211 int
armv7_bs_subregion(void * t,bus_space_handle_t bsh,bus_size_t offset,bus_size_t size,bus_space_handle_t * nbshp)212 armv7_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
213 bus_size_t size, bus_space_handle_t *nbshp)
214 {
215
216 *nbshp = bsh + offset;
217 return (0);
218 }
219
220 void
armv7_bs_barrier(void * t,bus_space_handle_t bsh,bus_size_t offset,bus_size_t len,int flags)221 armv7_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
222 bus_size_t len, int flags)
223 {
224 cpu_drain_writebuf();
225 }
226
227 void *
armv7_bs_vaddr(void * t,bus_space_handle_t bsh)228 armv7_bs_vaddr(void *t, bus_space_handle_t bsh)
229 {
230
231 return ((void *)bsh);
232 }
233
234
235 int
armv7_bs_alloc(void * t,bus_addr_t rstart,bus_addr_t rend,bus_size_t size,bus_size_t alignment,bus_size_t boundary,int flags,bus_addr_t * bpap,bus_space_handle_t * bshp)236 armv7_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
237 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
238 bus_addr_t *bpap, bus_space_handle_t *bshp)
239 {
240
241 panic("armv7_io_bs_alloc(): not implemented");
242 }
243
244 void
armv7_bs_free(void * t,bus_space_handle_t bsh,bus_size_t size)245 armv7_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
246 {
247
248 panic("armv7_io_bs_free(): not implemented");
249 }
250
251