1 /*-
2 * Copyright (c) 2017 Ilya Bakulin. All rights reserved.
3 * Copyright (c) 2018-2019 The FreeBSD Foundation
4 *
5 * Portions of this software were developed by Björn Zeeb
6 * under sponsorship from the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following 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 ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 *
29 * Portions of this software may have been developed with reference to
30 * the SD Simplified Specification. The following disclaimer may apply:
31 *
32 * The following conditions apply to the release of the simplified
33 * specification ("Simplified Specification") by the SD Card Association and
34 * the SD Group. The Simplified Specification is a subset of the complete SD
35 * Specification which is owned by the SD Card Association and the SD
36 * Group. This Simplified Specification is provided on a non-confidential
37 * basis subject to the disclaimers below. Any implementation of the
38 * Simplified Specification may require a license from the SD Card
39 * Association, SD Group, SD-3C LLC or other third parties.
40 *
41 * Disclaimers:
42 *
43 * The information contained in the Simplified Specification is presented only
44 * as a standard specification for SD Cards and SD Host/Ancillary products and
45 * is provided "AS-IS" without any representations or warranties of any
46 * kind. No responsibility is assumed by the SD Group, SD-3C LLC or the SD
47 * Card Association for any damages, any infringements of patents or other
48 * right of the SD Group, SD-3C LLC, the SD Card Association or any third
49 * parties, which may result from its use. No license is granted by
50 * implication, estoppel or otherwise under any patent or other rights of the
51 * SD Group, SD-3C LLC, the SD Card Association or any third party. Nothing
52 * herein shall be construed as an obligation by the SD Group, the SD-3C LLC
53 * or the SD Card Association to disclose or distribute any technical
54 * information, know-how or other confidential information to any third party.
55 */
56
57 #include <sys/types.h>
58 #include <sys/param.h>
59 #include <sys/kernel.h>
60 #include <sys/systm.h>
61 #include <sys/bus.h>
62 #include <sys/endian.h>
63
64 #include <dev/mmc/mmcreg.h>
65
66 #include <dev/sdio/sdiob.h>
67 #include <dev/sdio/sdio_subr.h>
68
69 #include "sdio_if.h"
70
71 /* Works on F0. */
72 static int
sdio_set_bool_for_func(device_t dev,uint32_t addr,uint8_t fn,bool enable)73 sdio_set_bool_for_func(device_t dev, uint32_t addr, uint8_t fn, bool enable)
74 {
75 device_t pdev;
76 int error;
77 uint8_t val;
78 bool enabled;
79
80 pdev = device_get_parent(dev);
81 error = SDIO_READ_DIRECT(pdev, 0, addr, &val);
82 if (error != 0)
83 return (error);
84
85 enabled = (val & (1 << fn)) ? true : false;
86 if (enabled == enable)
87 return (0);
88
89 if (enable)
90 val |= (1 << fn);
91 else
92 val &= ~(1 << fn);
93 error = SDIO_WRITE_DIRECT(pdev, 0, addr, val);
94 return (error);
95 }
96
97 int
sdio_enable_func(struct sdio_func * f)98 sdio_enable_func(struct sdio_func *f)
99 {
100
101 return (sdio_set_bool_for_func(f->dev, SD_IO_CCCR_FN_ENABLE,
102 f->fn, true));
103 }
104
105 int
sdio_disable_func(struct sdio_func * f)106 sdio_disable_func(struct sdio_func *f)
107 {
108
109 return (sdio_set_bool_for_func(f->dev, SD_IO_CCCR_FN_ENABLE,
110 f->fn, false));
111 }
112
113 int
sdio_set_block_size(struct sdio_func * f,uint16_t bs)114 sdio_set_block_size(struct sdio_func *f, uint16_t bs)
115 {
116 device_t pdev;
117 int error;
118 uint32_t addr;
119 uint16_t v;
120
121 if (bs > f->max_blksize)
122 return (EOPNOTSUPP);
123
124 if (!sdio_get_support_multiblk(f->dev))
125 return (EOPNOTSUPP);
126
127 pdev = device_get_parent(f->dev);
128 addr = SD_IO_FBR_START * f->fn + SD_IO_FBR_IOBLKSZ;
129 v = htole16(bs);
130 /* Always write through F0. */
131 error = SDIO_WRITE_DIRECT(pdev, 0, addr, v & 0xff);
132 if (error == 0)
133 error = SDIO_WRITE_DIRECT(pdev, 0, addr + 1,
134 (v >> 8) & 0xff);
135 if (error == 0)
136 f->cur_blksize = bs;
137
138 return (error);
139 }
140
141 uint8_t
sdio_read_1(struct sdio_func * f,uint32_t addr,int * err)142 sdio_read_1(struct sdio_func *f, uint32_t addr, int *err)
143 {
144 int error;
145 uint8_t v;
146
147 error = SDIO_READ_DIRECT(device_get_parent(f->dev), f->fn, addr, &v);
148 if (error) {
149 if (err != NULL)
150 *err = error;
151 return (0xff);
152 } else {
153 if (err != NULL)
154 *err = 0;
155 return (v);
156 }
157 }
158
159 void
sdio_write_1(struct sdio_func * f,uint32_t addr,uint8_t val,int * err)160 sdio_write_1(struct sdio_func *f, uint32_t addr, uint8_t val, int *err)
161 {
162 int error;
163
164 error = SDIO_WRITE_DIRECT(device_get_parent(f->dev), f->fn, addr, val);
165 if (err != NULL)
166 *err = error;
167 }
168
169 uint32_t
sdio_read_4(struct sdio_func * f,uint32_t addr,int * err)170 sdio_read_4(struct sdio_func *f, uint32_t addr, int *err)
171 {
172 int error;
173 uint32_t v;
174
175 error = SDIO_READ_EXTENDED(device_get_parent(f->dev), f->fn, addr,
176 sizeof(v), (uint8_t *)&v, true);
177 if (error) {
178 if (err != NULL)
179 *err = error;
180 return (0xffffffff);
181 } else {
182 if (err != NULL)
183 *err = 0;
184 return (le32toh(v));
185 }
186 }
187
188 void
sdio_write_4(struct sdio_func * f,uint32_t addr,uint32_t val,int * err)189 sdio_write_4(struct sdio_func *f, uint32_t addr, uint32_t val, int *err)
190 {
191 int error;
192
193 error = SDIO_WRITE_EXTENDED(device_get_parent(f->dev), f->fn, addr,
194 sizeof(val), (uint8_t *)&val, true);
195 if (err != NULL)
196 *err = error;
197 }
198
199 uint8_t
sdio_f0_read_1(struct sdio_func * f,uint32_t addr,int * err)200 sdio_f0_read_1(struct sdio_func *f, uint32_t addr, int *err)
201 {
202 int error;
203 uint8_t v;
204
205 error = SDIO_READ_DIRECT(device_get_parent(f->dev), 0, addr, &v);
206 if (error) {
207 if (err != NULL)
208 *err = error;
209 return (0xff);
210 } else {
211 if (err != NULL)
212 *err = 0;
213 return (v);
214 }
215 }
216
217 void
sdio_f0_write_1(struct sdio_func * f,uint32_t addr,uint8_t val,int * err)218 sdio_f0_write_1(struct sdio_func *f, uint32_t addr, uint8_t val, int *err)
219 {
220 int error;
221
222 error = SDIO_WRITE_DIRECT(device_get_parent(f->dev), 0, addr, val);
223 if (err != NULL)
224 *err = error;
225 }
226
227 /* end */
228