1 /* $NetBSD: i80321_space.c,v 1.6 2003/10/06 15:43:35 thorpej 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 /*
39 * bus_space functions for i80321 I/O Processor.
40 */
41
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD: releng/6.1/sys/arm/xscale/i80321/i80321_space.c 141819 2005-02-13 18:20:39Z cognet $");
44
45 #include <sys/param.h>
46 #include <sys/systm.h>
47 #include <sys/bus.h>
48
49 #include <machine/pcb.h>
50
51 #include <vm/vm.h>
52 #include <vm/vm_kern.h>
53 #include <vm/pmap.h>
54 #include <vm/vm_page.h>
55 #include <vm/vm_extern.h>
56
57 #include <machine/bus.h>
58
59 #include <arm/xscale/i80321/i80321reg.h>
60 #include <arm/xscale/i80321/i80321var.h>
61
62 /* Prototypes for all the bus_space structure functions */
63 bs_protos(i80321);
64 bs_protos(i80321_io);
65 bs_protos(i80321_mem);
66 bs_protos(generic);
67 bs_protos(generic_armv4);
68
69 /*
70 * Template bus_space -- copied, and the bits that are NULL are
71 * filled in.
72 */
73 const struct bus_space i80321_bs_tag_template = {
74 /* cookie */
75 (void *) 0,
76
77 /* mapping/unmapping */
78 NULL,
79 NULL,
80 i80321_bs_subregion,
81
82 /* allocation/deallocation */
83 NULL,
84 NULL,
85
86 /* barrier */
87 i80321_bs_barrier,
88
89 /* read (single) */
90 generic_bs_r_1,
91 generic_armv4_bs_r_2,
92 generic_bs_r_4,
93 NULL,
94
95 /* read multiple */
96 generic_bs_rm_1,
97 generic_armv4_bs_rm_2,
98 generic_bs_rm_4,
99 NULL,
100
101 /* read region */
102 NULL,
103 generic_armv4_bs_rr_2,
104 generic_bs_rr_4,
105 NULL,
106
107 /* write (single) */
108 generic_bs_w_1,
109 generic_armv4_bs_w_2,
110 generic_bs_w_4,
111 NULL,
112
113 /* write multiple */
114 generic_bs_wm_1,
115 generic_armv4_bs_wm_2,
116 generic_bs_wm_4,
117 NULL,
118
119 /* write region */
120 NULL,
121 generic_armv4_bs_wr_2,
122 generic_bs_wr_4,
123 NULL,
124
125 /* set multiple */
126 NULL,
127 NULL,
128 NULL,
129 NULL,
130
131 /* set region */
132 NULL,
133 generic_armv4_bs_sr_2,
134 generic_bs_sr_4,
135 NULL,
136
137 /* copy */
138 NULL,
139 generic_armv4_bs_c_2,
140 NULL,
141 NULL,
142 };
143
144 void
145 i80321_bs_init(bus_space_tag_t bs, void *cookie)
146 {
147
148 *bs = i80321_bs_tag_template;
149 bs->bs_cookie = cookie;
150 }
151
152 void
153 i80321_io_bs_init(bus_space_tag_t bs, void *cookie)
154 {
155
156 *bs = i80321_bs_tag_template;
157 bs->bs_cookie = cookie;
158
159 bs->bs_map = i80321_io_bs_map;
160 bs->bs_unmap = i80321_io_bs_unmap;
161 bs->bs_alloc = i80321_io_bs_alloc;
162 bs->bs_free = i80321_io_bs_free;
163
164 }
165
166 void
167 i80321_mem_bs_init(bus_space_tag_t bs, void *cookie)
168 {
169
170 *bs = i80321_bs_tag_template;
171 bs->bs_cookie = cookie;
172
173 bs->bs_map = i80321_mem_bs_map;
174 bs->bs_unmap = i80321_mem_bs_unmap;
175 bs->bs_alloc = i80321_mem_bs_alloc;
176 bs->bs_free = i80321_mem_bs_free;
177
178 }
179
180 /* *** Routines shared by i80321, PCI IO, and PCI MEM. *** */
181
182 int
183 i80321_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
184 bus_size_t size, bus_space_handle_t *nbshp)
185 {
186
187 *nbshp = bsh + offset;
188 return (0);
189 }
190
191 void
192 i80321_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
193 bus_size_t len, int flags)
194 {
195
196 /* Nothing to do. */
197 }
198
199 /* *** Routines for PCI IO. *** */
200
201 extern struct i80321_softc *i80321_softc;
202 int
203 i80321_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
204 bus_space_handle_t *bshp)
205 {
206 struct i80321_softc *sc = i80321_softc;
207 vm_offset_t winvaddr;
208 uint32_t busbase;
209
210 if (bpa >= sc->sc_ioout_xlate &&
211 bpa < (sc->sc_ioout_xlate + VERDE_OUT_XLATE_IO_WIN_SIZE)) {
212 busbase = sc->sc_ioout_xlate;
213 winvaddr = sc->sc_iow_vaddr;
214 } else
215 return (EINVAL);
216
217 if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_IO_WIN_SIZE))
218 return (EINVAL);
219
220 /*
221 * Found the window -- PCI I/O space is mapped at a fixed
222 * virtual address by board-specific code. Translate the
223 * bus address to the virtual address.
224 */
225 *bshp = winvaddr + (bpa - busbase);
226
227 return (0);
228 }
229
230 void
231 i80321_io_bs_unmap(void *t, bus_size_t size)
232 {
233
234 /* Nothing to do. */
235 }
236
237 int
238 i80321_io_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, int flags,
240 bus_addr_t *bpap, bus_space_handle_t *bshp)
241 {
242
243 panic("i80321_io_bs_alloc(): not implemented");
244 }
245
246 void
247 i80321_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
248 {
249
250 panic("i80321_io_bs_free(): not implemented");
251 }
252
253
254 /* *** Routines for PCI MEM. *** */
255 extern int badaddr_read(void *, int, void *);
256 int
257 i80321_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
258 bus_space_handle_t *bshp)
259 {
260
261 vm_offset_t va;
262 uint32_t busbase;
263 vm_paddr_t pa, endpa, physbase;
264
265 /*
266 * Found the window -- PCI MEM space is not mapped by allocating
267 * some kernel VA space and mapping the pages with pmap_enter().
268 * pmap_enter() will map unmanaged pages as non-cacheable.
269 */
270 pa = trunc_page((bpa - busbase) + physbase);
271 endpa = round_page(((bpa - busbase) + physbase) + size);
272 pa = trunc_page(bpa);
273 endpa = round_page(bpa + size);
274
275 *bshp = va + (bpa & PAGE_MASK);
276 *bshp = pa;
277 *bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa);
278
279 return (0);
280 }
281
282 void
283 i80321_mem_bs_unmap(void *t, bus_size_t size)
284 {
285 vm_offset_t va, endva;
286
287 va = trunc_page((vm_offset_t)t);
288 endva = va + round_page(size);
289
290 /* Free the kernel virtual mapping. */
291 kmem_free(kernel_map, va, endva - va);
292 }
293
294 int
295 i80321_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
296 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
297 bus_addr_t *bpap, bus_space_handle_t *bshp)
298 {
299
300 panic("i80321_mem_bs_alloc(): not implemented");
301 }
302
303 void
304 i80321_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
305 {
306
307 panic("i80321_mem_bs_free(): not implemented");
308 }
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