2 * Copyright (c) 2006 Bernd Walter. All rights reserved.
3 * Copyright (c) 2006 M. Warner Losh. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 * Portions of this software may have been developed with reference to
26 * the SD Simplified Specification. The following disclaimer may apply:
28 * The following conditions apply to the release of the simplified
29 * specification ("Simplified Specification") by the SD Card Association and
30 * the SD Group. The Simplified Specification is a subset of the complete SD
31 * Specification which is owned by the SD Card Association and the SD
32 * Group. This Simplified Specification is provided on a non-confidential
33 * basis subject to the disclaimers below. Any implementation of the
34 * Simplified Specification may require a license from the SD Card
35 * Association, SD Group, SD-3C LLC or other third parties.
39 * The information contained in the Simplified Specification is presented only
40 * as a standard specification for SD Cards and SD Host/Ancillary products and
41 * is provided "AS-IS" without any representations or warranties of any
42 * kind. No responsibility is assumed by the SD Group, SD-3C LLC or the SD
43 * Card Association for any damages, any infringements of patents or other
44 * right of the SD Group, SD-3C LLC, the SD Card Association or any third
45 * parties, which may result from its use. No license is granted by
46 * implication, estoppel or otherwise under any patent or other rights of the
47 * SD Group, SD-3C LLC, the SD Card Association or any third party. Nothing
48 * herein shall be construed as an obligation by the SD Group, the SD-3C LLC
49 * or the SD Card Association to disclose or distribute any technical
50 * information, know-how or other confidential information to any third party.
53 #include <sys/cdefs.h>
54 __FBSDID("$FreeBSD$");
56 #include <sys/param.h>
57 #include <sys/systm.h>
58 #include <sys/kernel.h>
60 #include <sys/mutex.h>
63 #include <dev/mmc/bridge.h>
64 #include <dev/mmc/mmc_private.h>
65 #include <dev/mmc/mmc_subr.h>
66 #include <dev/mmc/mmcreg.h>
67 #include <dev/mmc/mmcbrvar.h>
69 #include "mmcbus_if.h"
72 #define LOG_PPS 5 /* Log no more than 5 errors per second. */
75 mmc_wait_for_cmd(device_t brdev, device_t reqdev, struct mmc_command *cmd,
78 struct mmc_request mreq;
83 memset(&mreq, 0, sizeof(mreq));
84 memset(cmd->resp, 0, sizeof(cmd->resp));
85 cmd->retries = 0; /* Retries done here, not in hardware. */
87 if (cmd->data != NULL)
88 cmd->data->mrq = &mreq;
90 if (MMCBUS_WAIT_FOR_REQUEST(brdev, reqdev, &mreq) != 0)
94 } while (err != MMC_ERR_NONE && retries-- > 0);
96 if (err != MMC_ERR_NONE && brdev == reqdev) {
97 sc = device_get_softc(brdev);
98 if (sc->squelched == 0 && ppsratecheck(&sc->log_time,
99 &sc->log_count, LOG_PPS)) {
100 device_printf(sc->dev, "CMD%d failed, RESULT: %d\n",
109 mmc_wait_for_app_cmd(device_t brdev, device_t reqdev, uint16_t rca,
110 struct mmc_command *cmd, int retries)
112 struct mmc_command appcmd;
113 struct mmc_softc *sc;
116 sc = device_get_softc(brdev);
118 /* Squelch error reporting at lower levels, we report below. */
121 memset(&appcmd, 0, sizeof(appcmd));
122 appcmd.opcode = MMC_APP_CMD;
123 appcmd.arg = (uint32_t)rca << 16;
124 appcmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
125 if (mmc_wait_for_cmd(brdev, reqdev, &appcmd, 0) != 0)
126 err = MMC_ERR_FAILED;
129 if (err == MMC_ERR_NONE) {
130 if (!(appcmd.resp[0] & R1_APP_CMD))
131 err = MMC_ERR_FAILED;
132 else if (mmc_wait_for_cmd(brdev, reqdev, cmd, 0) != 0)
133 err = MMC_ERR_FAILED;
137 } while (err != MMC_ERR_NONE && retries-- > 0);
140 if (err != MMC_ERR_NONE && brdev == reqdev) {
141 sc = device_get_softc(brdev);
142 if (sc->squelched == 0 && ppsratecheck(&sc->log_time,
143 &sc->log_count, LOG_PPS)) {
144 device_printf(sc->dev, "ACMD%d failed, RESULT: %d\n",
153 mmc_switch(device_t brdev, device_t reqdev, uint16_t rca, uint8_t set,
154 uint8_t index, uint8_t value, u_int timeout, bool status)
156 struct mmc_command cmd;
159 KASSERT(timeout != 0, ("%s: no timeout", __func__));
161 memset(&cmd, 0, sizeof(cmd));
162 cmd.opcode = MMC_SWITCH_FUNC;
163 cmd.arg = (MMC_SWITCH_FUNC_WR << 24) | (index << 16) | (value << 8) |
166 * If the hardware supports busy detection but the switch timeout
167 * exceeds the maximum host timeout, use a R1 instead of a R1B
168 * response in order to keep the hardware from timing out.
170 if (mmcbr_get_caps(brdev) & MMC_CAP_WAIT_WHILE_BUSY &&
171 timeout > mmcbr_get_max_busy_timeout(brdev))
172 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
174 cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
175 err = mmc_wait_for_cmd(brdev, reqdev, &cmd, CMD_RETRIES);
176 if (err != MMC_ERR_NONE || status == false)
178 return (mmc_switch_status(brdev, reqdev, rca, timeout));
182 mmc_switch_status(device_t brdev, device_t reqdev, uint16_t rca, u_int timeout)
184 struct timeval cur, end;
188 KASSERT(timeout != 0, ("%s: no timeout", __func__));
191 * Note that when using a R1B response in mmc_switch(), bridges of
192 * type MMC_CAP_WAIT_WHILE_BUSY will issue mmc_send_status() only
193 * once and then exit the loop.
196 err = mmc_send_status(brdev, reqdev, rca, &status);
197 if (err != MMC_ERR_NONE)
199 if (R1_CURRENT_STATE(status) == R1_STATE_TRAN)
201 getmicrouptime(&cur);
202 if (end.tv_sec == 0 && end.tv_usec == 0) {
203 end.tv_usec = timeout;
204 timevaladd(&end, &cur);
206 if (timevalcmp(&cur, &end, >)) {
207 err = MMC_ERR_TIMEOUT;
211 if (err == MMC_ERR_NONE && R1_CURRENT_STATE(status) == R1_SWITCH_ERROR)
212 return (MMC_ERR_FAILED);
217 mmc_send_ext_csd(device_t brdev, device_t reqdev, uint8_t *rawextcsd)
219 struct mmc_command cmd;
220 struct mmc_data data;
223 memset(&cmd, 0, sizeof(cmd));
224 memset(&data, 0, sizeof(data));
226 memset(rawextcsd, 0, MMC_EXTCSD_SIZE);
227 cmd.opcode = MMC_SEND_EXT_CSD;
228 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
231 data.data = rawextcsd;
232 data.len = MMC_EXTCSD_SIZE;
233 data.flags = MMC_DATA_READ;
235 err = mmc_wait_for_cmd(brdev, reqdev, &cmd, CMD_RETRIES);
240 mmc_send_status(device_t brdev, device_t reqdev, uint16_t rca, uint32_t *status)
242 struct mmc_command cmd;
245 memset(&cmd, 0, sizeof(cmd));
246 cmd.opcode = MMC_SEND_STATUS;
247 cmd.arg = (uint32_t)rca << 16;
248 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
249 err = mmc_wait_for_cmd(brdev, reqdev, &cmd, CMD_RETRIES);
250 *status = cmd.resp[0];