1 /* $NetBSD: becc_space.c,v 1.6 2018/03/16 17:56:32 ryo 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 the ADI Engineering Big Endian Companion Chip.
40 */
41
42 #include <sys/cdefs.h>
43 __KERNEL_RCSID(0, "$NetBSD: becc_space.c,v 1.6 2018/03/16 17:56:32 ryo Exp $");
44
45 #include <sys/param.h>
46 #include <sys/systm.h>
47
48 #include <uvm/uvm_extern.h>
49
50 #include <sys/bus.h>
51
52 #include <arm/xscale/beccreg.h>
53 #include <arm/xscale/beccvar.h>
54
55 /* Prototypes for all the bus_space structure functions */
56 bs_protos(becc);
57 bs_protos(becc_io);
58 bs_protos(becc_mem);
59 bs_protos(becc_pci);
60 bs_protos(bs_notimpl);
61
62 /*
63 * Template bus_space -- copied, and the bits that are NULL are
64 * filled in.
65 */
66 const struct bus_space becc_bs_tag_template = {
67 /* cookie */
68 .bs_cookie = (void *) 0,
69
70 /* mapping/unmapping */
71 .bs_map = NULL,
72 .bs_unmap = NULL,
73 .bs_subregion = becc_bs_subregion,
74
75 /* allocation/deallocation */
76 .bs_alloc = NULL,
77 .bs_free = NULL,
78
79 /* get kernel virtual address */
80 .bs_vaddr = becc_bs_vaddr,
81
82 /* mmap */
83 .bs_mmap = becc_bs_mmap,
84
85 /* barrier */
86 .bs_barrier = becc_bs_barrier,
87
88 /* read (single) */
89 .bs_r_1 = becc_pci_bs_r_1,
90 .bs_r_2 = becc_pci_bs_r_2,
91 .bs_r_4 = becc_pci_bs_r_4,
92 .bs_r_8 = bs_notimpl_bs_r_8,
93
94 /* read multiple */
95 .bs_rm_1 = bs_notimpl_bs_rm_1,
96 .bs_rm_2 = bs_notimpl_bs_rm_2,
97 .bs_rm_4 = bs_notimpl_bs_rm_4,
98 .bs_rm_8 = bs_notimpl_bs_rm_8,
99
100 /* read region */
101 .bs_rr_1 = bs_notimpl_bs_rr_1,
102 .bs_rr_2 = bs_notimpl_bs_rr_2,
103 .bs_rr_4 = bs_notimpl_bs_rr_4,
104 .bs_rr_8 = bs_notimpl_bs_rr_8,
105
106 /* write (single) */
107 .bs_w_1 = becc_pci_bs_w_1,
108 .bs_w_2 = becc_pci_bs_w_2,
109 .bs_w_4 = becc_pci_bs_w_4,
110 .bs_w_8 = bs_notimpl_bs_w_8,
111
112 /* write multiple */
113 .bs_wm_1 = bs_notimpl_bs_wm_1,
114 .bs_wm_2 = bs_notimpl_bs_wm_2,
115 .bs_wm_4 = bs_notimpl_bs_wm_4,
116 .bs_wm_8 = bs_notimpl_bs_wm_8,
117
118 /* write region */
119 .bs_wr_1 = bs_notimpl_bs_wr_1,
120 .bs_wr_2 = bs_notimpl_bs_wr_2,
121 .bs_wr_4 = bs_notimpl_bs_wr_4,
122 .bs_wr_8 = bs_notimpl_bs_wr_8,
123
124 /* set multiple */
125 .bs_sm_1 = bs_notimpl_bs_sm_1,
126 .bs_sm_2 = bs_notimpl_bs_sm_2,
127 .bs_sm_4 = bs_notimpl_bs_sm_4,
128 .bs_sm_8 = bs_notimpl_bs_sm_8,
129
130 /* set region */
131 .bs_sr_1 = bs_notimpl_bs_sr_1,
132 .bs_sr_2 = bs_notimpl_bs_sr_2,
133 .bs_sr_4 = bs_notimpl_bs_sr_4,
134 .bs_sr_8 = bs_notimpl_bs_sr_8,
135
136 /* copy */
137 .bs_c_1 = bs_notimpl_bs_c_1,
138 .bs_c_2 = bs_notimpl_bs_c_2,
139 .bs_c_4 = bs_notimpl_bs_c_4,
140 .bs_c_8 = bs_notimpl_bs_c_8,
141 };
142
143 void
becc_io_bs_init(bus_space_tag_t bs,void * cookie)144 becc_io_bs_init(bus_space_tag_t bs, void *cookie)
145 {
146
147 *bs = becc_bs_tag_template;
148 bs->bs_cookie = cookie;
149
150 bs->bs_map = becc_io_bs_map;
151 bs->bs_unmap = becc_io_bs_unmap;
152 bs->bs_alloc = becc_io_bs_alloc;
153 bs->bs_free = becc_io_bs_free;
154
155 bs->bs_vaddr = becc_io_bs_vaddr;
156 }
157
158 void
becc_mem_bs_init(bus_space_tag_t bs,void * cookie)159 becc_mem_bs_init(bus_space_tag_t bs, void *cookie)
160 {
161
162 *bs = becc_bs_tag_template;
163 bs->bs_cookie = cookie;
164
165 bs->bs_map = becc_mem_bs_map;
166 bs->bs_unmap = becc_mem_bs_unmap;
167 bs->bs_alloc = becc_mem_bs_alloc;
168 bs->bs_free = becc_mem_bs_free;
169
170 bs->bs_mmap = becc_mem_bs_mmap;
171 }
172
173 /* *** Routines shared by becc, PCI IO, and PCI MEM. *** */
174
175 int
becc_bs_subregion(void * t,bus_space_handle_t bsh,bus_size_t offset,bus_size_t size,bus_space_handle_t * nbshp)176 becc_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
177 bus_size_t size, bus_space_handle_t *nbshp)
178 {
179
180 *nbshp = bsh + offset;
181 return (0);
182 }
183
184 void
becc_bs_barrier(void * t,bus_space_handle_t bsh,bus_size_t offset,bus_size_t len,int flags)185 becc_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
186 bus_size_t len, int flags)
187 {
188
189 /* Nothing to do. */
190 }
191
192 void *
becc_bs_vaddr(void * t,bus_space_handle_t bsh)193 becc_bs_vaddr(void *t, bus_space_handle_t bsh)
194 {
195
196 return ((void *)bsh);
197 }
198
199 paddr_t
becc_bs_mmap(void * t,bus_addr_t addr,off_t off,int prot,int flags)200 becc_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags)
201 {
202
203 /* Not supported. */
204 return (-1);
205 }
206
207 /* *** Routines for PCI IO. *** */
208
209 int
becc_io_bs_map(void * t,bus_addr_t bpa,bus_size_t size,int flags,bus_space_handle_t * bshp)210 becc_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
211 bus_space_handle_t *bshp)
212 {
213 struct becc_softc *sc = t;
214 vaddr_t winvaddr;
215 uint32_t busbase;
216
217 if (bpa >= sc->sc_ioout_xlate &&
218 bpa < (sc->sc_ioout_xlate + (64 * 1024))) {
219 busbase = sc->sc_ioout_xlate;
220 winvaddr = sc->sc_pci_io_base;
221 } else
222 return (EINVAL);
223
224 if ((bpa + size) >= (busbase + (64 * 1024)))
225 return (EINVAL);
226
227 /*
228 * Found the window -- PCI I/O space is mapped at a fixed
229 * virtual address by board-specific code. Translate the
230 * bus address to the virtual address.
231 */
232 *bshp = winvaddr + (bpa - busbase);
233
234 return (0);
235 }
236
237 void
becc_io_bs_unmap(void * t,bus_space_handle_t bsh,bus_size_t size)238 becc_io_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
239 {
240
241 /* Nothing to do. */
242 }
243
244 int
becc_io_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)245 becc_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
246 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
247 bus_addr_t *bpap, bus_space_handle_t *bshp)
248 {
249
250 panic("becc_io_bs_alloc(): not implemented\n");
251 }
252
253 void
becc_io_bs_free(void * t,bus_space_handle_t bsh,bus_size_t size)254 becc_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
255 {
256
257 panic("becc_io_bs_free(): not implemented\n");
258 }
259
260 void *
becc_io_bs_vaddr(void * t,bus_space_handle_t bsh)261 becc_io_bs_vaddr(void *t, bus_space_handle_t bsh)
262 {
263
264 /* Not supported. */
265 return (NULL);
266 }
267
268 /* *** Routines for PCI MEM. *** */
269
270 int
becc_mem_bs_map(void * t,bus_addr_t bpa,bus_size_t size,int flags,bus_space_handle_t * bshp)271 becc_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
272 bus_space_handle_t *bshp)
273 {
274
275 struct becc_softc *sc = t;
276 vaddr_t winvaddr;
277 uint32_t busbase;
278
279 /*
280 * The two memory windows have been configured to the same
281 * PCI base by board-specific code, so we only need to look
282 * at the first one.
283 */
284
285 if (bpa >= sc->sc_owin_xlate[0] &&
286 bpa < (sc->sc_owin_xlate[0] + BECC_PCI_MEM1_SIZE)) {
287 busbase = sc->sc_owin_xlate[0];
288 winvaddr = sc->sc_pci_mem_base[0];
289 } else
290 return (EINVAL);
291
292 if ((bpa + size) >= (busbase + BECC_PCI_MEM1_SIZE))
293 return (EINVAL);
294
295 /*
296 * Found the window -- PCI MEM space is mapped at a fixed
297 * virtual address by board-specific code. Translate the
298 * bus address to the virtual address.
299 */
300 *bshp = winvaddr + (bpa - busbase);
301
302 return (0);
303 }
304
305 void
becc_mem_bs_unmap(void * t,bus_space_handle_t bsh,bus_size_t size)306 becc_mem_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
307 {
308
309 /* Nothing to do. */
310 }
311
312 int
becc_mem_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)313 becc_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
314 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
315 bus_addr_t *bpap, bus_space_handle_t *bshp)
316 {
317
318 panic("becc_mem_bs_alloc(): not implemented\n");
319 }
320
321 void
becc_mem_bs_free(void * t,bus_space_handle_t bsh,bus_size_t size)322 becc_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
323 {
324
325 panic("becc_mem_bs_free(): not implemented\n");
326 }
327
328 paddr_t
becc_mem_bs_mmap(void * t,bus_addr_t addr,off_t off,int prot,int flags)329 becc_mem_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags)
330 {
331
332 /* XXX */
333 return (-1);
334 }
335