1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice unmodified, this list of conditions, and the following
12 *    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 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/bus.h>
35#include <sys/endian.h>
36
37#include <machine/bus.h>
38#include <mips/atheros/ar71xx_pci_bus_space.h>
39
40static bs_r_1_s_proto(pcimem);
41static bs_r_2_s_proto(pcimem);
42static bs_r_4_s_proto(pcimem);
43static bs_w_1_s_proto(pcimem);
44static bs_w_2_s_proto(pcimem);
45static bs_w_4_s_proto(pcimem);
46
47/*
48 * Bus space that handles offsets in word for 1/2 bytes read/write access.
49 * Byte order of values is handled by device drivers itself.
50 */
51static struct bus_space bus_space_pcimem = {
52	/* cookie */
53	(void *) 0,
54
55	/* mapping/unmapping */
56	generic_bs_map,
57	generic_bs_unmap,
58	generic_bs_subregion,
59
60	/* allocation/deallocation */
61	NULL,
62	NULL,
63
64	/* barrier */
65	generic_bs_barrier,
66
67	/* read (single) */
68	generic_bs_r_1,
69	generic_bs_r_2,
70	generic_bs_r_4,
71	NULL,
72
73	/* read multiple */
74	generic_bs_rm_1,
75	generic_bs_rm_2,
76	generic_bs_rm_4,
77	NULL,
78
79	/* read region */
80	generic_bs_rr_1,
81	generic_bs_rr_2,
82	generic_bs_rr_4,
83	NULL,
84
85	/* write (single) */
86	generic_bs_w_1,
87	generic_bs_w_2,
88	generic_bs_w_4,
89	NULL,
90
91	/* write multiple */
92	generic_bs_wm_1,
93	generic_bs_wm_2,
94	generic_bs_wm_4,
95	NULL,
96
97	/* write region */
98	NULL,
99	generic_bs_wr_2,
100	generic_bs_wr_4,
101	NULL,
102
103	/* set multiple */
104	NULL,
105	NULL,
106	NULL,
107	NULL,
108
109	/* set region */
110	NULL,
111	generic_bs_sr_2,
112	generic_bs_sr_4,
113	NULL,
114
115	/* copy */
116	NULL,
117	generic_bs_c_2,
118	NULL,
119	NULL,
120
121	/* read (single) stream */
122	pcimem_bs_r_1_s,
123	pcimem_bs_r_2_s,
124	pcimem_bs_r_4_s,
125	NULL,
126
127	/* read multiple stream */
128	generic_bs_rm_1,
129	generic_bs_rm_2,
130	generic_bs_rm_4,
131	NULL,
132
133	/* read region stream */
134	generic_bs_rr_1,
135	generic_bs_rr_2,
136	generic_bs_rr_4,
137	NULL,
138
139	/* write (single) stream */
140	pcimem_bs_w_1_s,
141	pcimem_bs_w_2_s,
142	pcimem_bs_w_4_s,
143	NULL,
144
145	/* write multiple stream */
146	generic_bs_wm_1,
147	generic_bs_wm_2,
148	generic_bs_wm_4,
149	NULL,
150
151	/* write region stream */
152	NULL,
153	generic_bs_wr_2,
154	generic_bs_wr_4,
155	NULL,
156};
157
158bus_space_tag_t ar71xx_bus_space_pcimem = &bus_space_pcimem;
159
160static uint8_t
161pcimem_bs_r_1_s(void *t, bus_space_handle_t h, bus_size_t o)
162{
163
164	return readb(h + (o &~ 3) + (3 - (o & 3)));
165}
166
167static void
168pcimem_bs_w_1_s(void *t, bus_space_handle_t h, bus_size_t o, u_int8_t v)
169{
170
171	writeb(h + (o &~ 3) + (3 - (o & 3)), v);
172}
173
174static uint16_t
175pcimem_bs_r_2_s(void *t, bus_space_handle_t h, bus_size_t o)
176{
177
178	return readw(h + (o &~ 3) + (2 - (o & 3)));
179}
180
181static void
182pcimem_bs_w_2_s(void *t, bus_space_handle_t h, bus_size_t o, uint16_t v)
183{
184
185	writew(h + (o &~ 3) + (2 - (o & 3)), v);
186}
187
188static uint32_t
189pcimem_bs_r_4_s(void *t, bus_space_handle_t h, bus_size_t o)
190{
191
192	return le32toh(readl(h + o));
193}
194
195static void
196pcimem_bs_w_4_s(void *t, bus_space_handle_t h, bus_size_t o, uint32_t v)
197{
198
199	writel(h + o, htole32(v));
200}
201