i80321_space.c revision 236987 
1133105Srwatson/*	$NetBSD: i80321_space.c,v 1.6 2003/10/06 15:43:35 thorpej Exp $	*/
2133105Srwatson
3133105Srwatson/*-
4133105Srwatson * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
5133105Srwatson * All rights reserved.
6139103Sru *
7160202Smaxim * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8133105Srwatson *
9133105Srwatson * 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: head/sys/arm/xscale/i80321/i80321_space.c 236987 2012-06-13 04:38:09Z imp $");
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 */
63bs_protos(i80321);
64bs_protos(i80321_io);
65bs_protos(i80321_mem);
66bs_protos(generic);
67bs_protos(generic_armv4);
68
69/*
70 * Template bus_space -- copied, and the bits that are NULL are
71 * filled in.
72 */
73const 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	generic_bs_rr_1,
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	/* read (single) stream */
144	generic_bs_r_1,
145	generic_armv4_bs_r_2,
146	generic_bs_r_4,
147	NULL,
148
149	/* read multiple stream */
150	generic_bs_rm_1,
151	generic_armv4_bs_rm_2,
152	generic_bs_rm_4,
153	NULL,
154
155	/* read region stream */
156	generic_bs_rr_1,
157	generic_armv4_bs_rr_2,
158	generic_bs_rr_4,
159	NULL,
160
161	/* write (single) stream */
162	generic_bs_w_1,
163	generic_armv4_bs_w_2,
164	generic_bs_w_4,
165	NULL,
166
167	/* write multiple stream */
168	generic_bs_wm_1,
169	generic_armv4_bs_wm_2,
170	generic_bs_wm_4,
171	NULL,
172
173	/* write region stream */
174	NULL,
175	generic_armv4_bs_wr_2,
176	generic_bs_wr_4,
177	NULL,
178};
179
180void
181i80321_bs_init(bus_space_tag_t bs, void *cookie)
182{
183
184	*bs = i80321_bs_tag_template;
185	bs->bs_cookie = cookie;
186}
187
188void
189i80321_io_bs_init(bus_space_tag_t bs, void *cookie)
190{
191
192	*bs = i80321_bs_tag_template;
193	bs->bs_cookie = cookie;
194
195	bs->bs_map = i80321_io_bs_map;
196	bs->bs_unmap = i80321_io_bs_unmap;
197	bs->bs_alloc = i80321_io_bs_alloc;
198	bs->bs_free = i80321_io_bs_free;
199
200}
201
202void
203i80321_mem_bs_init(bus_space_tag_t bs, void *cookie)
204{
205
206	*bs = i80321_bs_tag_template;
207	bs->bs_cookie = cookie;
208
209	bs->bs_map = i80321_mem_bs_map;
210	bs->bs_unmap = i80321_mem_bs_unmap;
211	bs->bs_alloc = i80321_mem_bs_alloc;
212	bs->bs_free = i80321_mem_bs_free;
213
214}
215
216/* *** Routines shared by i80321, PCI IO, and PCI MEM. *** */
217
218int
219i80321_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
220    bus_size_t size, bus_space_handle_t *nbshp)
221{
222
223	*nbshp = bsh + offset;
224	return (0);
225}
226
227void
228i80321_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
229    bus_size_t len, int flags)
230{
231
232	/* Nothing to do. */
233}
234
235/* *** Routines for PCI IO. *** */
236
237extern struct i80321_softc *i80321_softc;
238int
239i80321_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
240    bus_space_handle_t *bshp)
241{
242	struct i80321_softc *sc = i80321_softc;
243	vm_offset_t winvaddr;
244	uint32_t busbase;
245
246	if (bpa >= sc->sc_ioout_xlate &&
247	    bpa < (sc->sc_ioout_xlate + VERDE_OUT_XLATE_IO_WIN_SIZE)) {
248		busbase = sc->sc_ioout_xlate;
249		winvaddr = sc->sc_iow_vaddr;
250	} else
251		return (EINVAL);
252
253	if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_IO_WIN_SIZE))
254		return (EINVAL);
255
256	/*
257	 * Found the window -- PCI I/O space is mapped at a fixed
258	 * virtual address by board-specific code.  Translate the
259	 * bus address to the virtual address.
260	 */
261	*bshp = winvaddr + (bpa - busbase);
262
263	return (0);
264}
265
266void
267i80321_io_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
268{
269
270	/* Nothing to do. */
271}
272
273int
274i80321_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
275    bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
276    bus_addr_t *bpap, bus_space_handle_t *bshp)
277{
278
279	panic("i80321_io_bs_alloc(): not implemented");
280}
281
282void
283i80321_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
284{
285
286	panic("i80321_io_bs_free(): not implemented");
287}
288
289
290/* *** Routines for PCI MEM. *** */
291extern int badaddr_read(void *, int, void *);
292int
293i80321_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
294    bus_space_handle_t *bshp)
295{
296	vm_paddr_t pa, endpa;
297
298	pa = trunc_page(bpa);
299	endpa = round_page(bpa + size);
300
301	*bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa);
302
303	return (0);
304}
305
306void
307i80321_mem_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size)
308{
309	vm_offset_t va, endva;
310
311	va = trunc_page((vm_offset_t)t);
312	endva = va + round_page(size);
313
314	/* Free the kernel virtual mapping. */
315	kmem_free(kernel_map, va, endva - va);
316}
317
318int
319i80321_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend,
320    bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags,
321    bus_addr_t *bpap, bus_space_handle_t *bshp)
322{
323
324	panic("i80321_mem_bs_alloc(): not implemented");
325}
326
327void
328i80321_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size)
329{
330
331	panic("i80321_mem_bs_free(): not implemented");
332}
333