1/*-
2 * Copyright (c) 2006 Bernd Walter. All rights reserved.
3 * Copyright (c) 2006 M. Warner Losh. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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.
24 *
25 * Portions of this software may have been developed with reference to
26 * the SD Simplified Specification. The following disclaimer may apply:
27 *
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.
36 *
37 * Disclaimers:
38 *
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.
51 */
52
53#include <sys/cdefs.h>
54__FBSDID("$FreeBSD: head/sys/dev/mmc/mmc.c 242321 2012-10-29 17:23:45Z gonzo $");
55
56#include <sys/param.h>
57#include <sys/systm.h>
58#include <sys/kernel.h>
59#include <sys/malloc.h>
60#include <sys/lock.h>
61#include <sys/module.h>
62#include <sys/mutex.h>
63#include <sys/bus.h>
64#include <sys/endian.h>
65#include <sys/sysctl.h>
66
67#include <dev/mmc/mmcreg.h>
68#include <dev/mmc/mmcbrvar.h>
69#include <dev/mmc/mmcvar.h>
70#include "mmcbr_if.h"
71#include "mmcbus_if.h"
72
73struct mmc_softc {
74 device_t dev;
75 struct mtx sc_mtx;
76 struct intr_config_hook config_intrhook;
77 device_t owner;
78 uint32_t last_rca;
79};
80
81/*
82 * Per-card data
83 */
84struct mmc_ivars {
85 uint32_t raw_cid[4]; /* Raw bits of the CID */
86 uint32_t raw_csd[4]; /* Raw bits of the CSD */
87 uint32_t raw_scr[2]; /* Raw bits of the SCR */
88 uint8_t raw_ext_csd[512]; /* Raw bits of the EXT_CSD */
89 uint32_t raw_sd_status[16]; /* Raw bits of the SD_STATUS */
90 uint16_t rca;
91 enum mmc_card_mode mode;
92 struct mmc_cid cid; /* cid decoded */
93 struct mmc_csd csd; /* csd decoded */
94 struct mmc_scr scr; /* scr decoded */
95 struct mmc_sd_status sd_status; /* SD_STATUS decoded */
96 u_char read_only; /* True when the device is read-only */
97 u_char bus_width; /* Bus width to use */
98 u_char timing; /* Bus timing support */
99 u_char high_cap; /* High Capacity card (block addressed) */
100 uint32_t sec_count; /* Card capacity in 512byte blocks */
101 uint32_t tran_speed; /* Max speed in normal mode */
102 uint32_t hs_tran_speed; /* Max speed in high speed mode */
103 uint32_t erase_sector; /* Card native erase sector size */
104 char card_id_string[64];/* Formatted CID info (serial, MFG, etc) */
105};
106
107#define CMD_RETRIES 3
108
109static SYSCTL_NODE(_hw, OID_AUTO, mmc, CTLFLAG_RD, NULL, "mmc driver");
110
111static int mmc_debug;
112SYSCTL_INT(_hw_mmc, OID_AUTO, debug, CTLFLAG_RW, &mmc_debug, 0, "Debug level");
113
114/* bus entry points */
115static int mmc_acquire_bus(device_t busdev, device_t dev);
116static int mmc_attach(device_t dev);
117static int mmc_child_location_str(device_t dev, device_t child, char *buf,
118 size_t buflen);
119static int mmc_detach(device_t dev);
120static int mmc_probe(device_t dev);
121static int mmc_read_ivar(device_t bus, device_t child, int which,
122 uintptr_t *result);
123static int mmc_release_bus(device_t busdev, device_t dev);
124static int mmc_resume(device_t dev);
125static int mmc_suspend(device_t dev);
126static int mmc_wait_for_request(device_t brdev, device_t reqdev,
127 struct mmc_request *req);
128static int mmc_write_ivar(device_t bus, device_t child, int which,
129 uintptr_t value);
130
131#define MMC_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
132#define MMC_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
133#define MMC_LOCK_INIT(_sc) \
134 mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->dev), \
135 "mmc", MTX_DEF)
136#define MMC_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
137#define MMC_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED);
138#define MMC_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
139
140static int mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid);
141static void mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr);
142static void mmc_app_decode_sd_status(uint32_t *raw_sd_status,
143 struct mmc_sd_status *sd_status);
144static int mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca,
145 uint32_t *rawsdstatus);
146static int mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca,
147 uint32_t *rawscr);
148static int mmc_calculate_clock(struct mmc_softc *sc);
149static void mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid);
150static void mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid);
151static void mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd);
152static void mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd);
153static void mmc_delayed_attach(void *xsc);
154static int mmc_delete_cards(struct mmc_softc *sc);
155static void mmc_discover_cards(struct mmc_softc *sc);
156static void mmc_format_card_id_string(struct mmc_ivars *ivar);
157static void mmc_go_discovery(struct mmc_softc *sc);
158static uint32_t mmc_get_bits(uint32_t *bits, int bit_len, int start,
159 int size);
160static int mmc_highest_voltage(uint32_t ocr);
161static void mmc_idle_cards(struct mmc_softc *sc);
162static void mmc_ms_delay(int ms);
163static void mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard);
164static void mmc_power_down(struct mmc_softc *sc);
165static void mmc_power_up(struct mmc_softc *sc);
166static void mmc_rescan_cards(struct mmc_softc *sc);
167static void mmc_scan(struct mmc_softc *sc);
168static int mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp,
169 uint8_t value, uint8_t *res);
170static int mmc_select_card(struct mmc_softc *sc, uint16_t rca);
171static uint32_t mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr);
172static int mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr,
173 uint32_t *rocr);
174static int mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd);
175static int mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd);
176static int mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs);
177static int mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr,
178 uint32_t *rocr);
179static int mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp);
180static int mmc_send_status(struct mmc_softc *sc, uint16_t rca,
181 uint32_t *status);
182static int mmc_set_blocklen(struct mmc_softc *sc, uint32_t len);
183static int mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca,
184 int width);
185static int mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp);
186static int mmc_set_timing(struct mmc_softc *sc, int timing);
187static int mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index,
188 uint8_t value);
189static int mmc_test_bus_width(struct mmc_softc *sc);
190static int mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca,
191 struct mmc_command *cmd, int retries);
192static int mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd,
193 int retries);
194static int mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
195 uint32_t arg, uint32_t flags, uint32_t *resp, int retries);
196static int mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req);
197static void mmc_wakeup(struct mmc_request *req);
198
199static void
200mmc_ms_delay(int ms)
201{
202
203 DELAY(1000 * ms); /* XXX BAD */
204}
205
206static int
207mmc_probe(device_t dev)
208{
209
210 device_set_desc(dev, "MMC/SD bus");
211 return (0);
212}
213
214static int
215mmc_attach(device_t dev)
216{
217 struct mmc_softc *sc;
218
219 sc = device_get_softc(dev);
220 sc->dev = dev;
221 MMC_LOCK_INIT(sc);
222
223 /* We'll probe and attach our children later, but before / mount */
224 sc->config_intrhook.ich_func = mmc_delayed_attach;
225 sc->config_intrhook.ich_arg = sc;
226 if (config_intrhook_establish(&sc->config_intrhook) != 0)
227 device_printf(dev, "config_intrhook_establish failed\n");
228 return (0);
229}
230
231static int
232mmc_detach(device_t dev)
233{
234 struct mmc_softc *sc = device_get_softc(dev);
235 int err;
236
237 if ((err = mmc_delete_cards(sc)) != 0)
238 return (err);
239 mmc_power_down(sc);
240 MMC_LOCK_DESTROY(sc);
241
242 return (0);
243}
244
245static int
246mmc_suspend(device_t dev)
247{
248 struct mmc_softc *sc = device_get_softc(dev);
249 int err;
250
251 err = bus_generic_suspend(dev);
252 if (err)
253 return (err);
254 mmc_power_down(sc);
255 return (0);
256}
257
258static int
259mmc_resume(device_t dev)
260{
261 struct mmc_softc *sc = device_get_softc(dev);
262
263 mmc_scan(sc);
264 return (bus_generic_resume(dev));
265}
266
267static int
268mmc_acquire_bus(device_t busdev, device_t dev)
269{
270 struct mmc_softc *sc;
271 struct mmc_ivars *ivar;
272 int err;
273 int rca;
274
275 err = MMCBR_ACQUIRE_HOST(device_get_parent(busdev), busdev);
276 if (err)
277 return (err);
278 sc = device_get_softc(busdev);
279 MMC_LOCK(sc);
280 if (sc->owner)
281 panic("mmc: host bridge didn't serialize us.");
282 sc->owner = dev;
283 MMC_UNLOCK(sc);
284
285 if (busdev != dev) {
286 /*
287 * Keep track of the last rca that we've selected. If
288 * we're asked to do it again, don't. We never
289 * unselect unless the bus code itself wants the mmc
290 * bus, and constantly reselecting causes problems.
291 */
292 rca = mmc_get_rca(dev);
293 if (sc->last_rca != rca) {
294 mmc_select_card(sc, rca);
295 sc->last_rca = rca;
296 /* Prepare bus width for the new card. */
297 ivar = device_get_ivars(dev);
298 if (bootverbose || mmc_debug) {
299 device_printf(busdev,
300 "setting bus width to %d bits\n",
301 (ivar->bus_width == bus_width_4) ? 4 :
302 (ivar->bus_width == bus_width_8) ? 8 : 1);
303 }
304 mmc_set_card_bus_width(sc, rca, ivar->bus_width);
305 mmcbr_set_bus_width(busdev, ivar->bus_width);
306 mmcbr_update_ios(busdev);
307 }
308 } else {
309 /*
310 * If there's a card selected, stand down.
311 */
312 if (sc->last_rca != 0) {
313 mmc_select_card(sc, 0);
314 sc->last_rca = 0;
315 }
316 }
317
318 return (0);
319}
320
321static int
322mmc_release_bus(device_t busdev, device_t dev)
323{
324 struct mmc_softc *sc;
325 int err;
326
327 sc = device_get_softc(busdev);
328
329 MMC_LOCK(sc);
330 if (!sc->owner)
331 panic("mmc: releasing unowned bus.");
332 if (sc->owner != dev)
333 panic("mmc: you don't own the bus. game over.");
334 MMC_UNLOCK(sc);
335 err = MMCBR_RELEASE_HOST(device_get_parent(busdev), busdev);
336 if (err)
337 return (err);
338 MMC_LOCK(sc);
339 sc->owner = NULL;
340 MMC_UNLOCK(sc);
341 return (0);
342}
343
344static uint32_t
345mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr)
346{
347
348 return (ocr & MMC_OCR_VOLTAGE);
349}
350
351static int
352mmc_highest_voltage(uint32_t ocr)
353{
354 int i;
355
356 for (i = 30; i >= 0; i--)
357 if (ocr & (1 << i))
358 return (i);
359 return (-1);
360}
361
362static void
363mmc_wakeup(struct mmc_request *req)
364{
365 struct mmc_softc *sc;
366
367 sc = (struct mmc_softc *)req->done_data;
368 MMC_LOCK(sc);
369 req->flags |= MMC_REQ_DONE;
370 MMC_UNLOCK(sc);
371 wakeup(req);
372}
373
374static int
375mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req)
376{
377
378 req->done = mmc_wakeup;
379 req->done_data = sc;
380 if (mmc_debug > 1) {
381 device_printf(sc->dev, "REQUEST: CMD%d arg %#x flags %#x",
382 req->cmd->opcode, req->cmd->arg, req->cmd->flags);
383 if (req->cmd->data) {
384 printf(" data %d\n", (int)req->cmd->data->len);
385 } else
386 printf("\n");
387 }
388 MMCBR_REQUEST(device_get_parent(sc->dev), sc->dev, req);
389 MMC_LOCK(sc);
390 while ((req->flags & MMC_REQ_DONE) == 0)
391 msleep(req, &sc->sc_mtx, 0, "mmcreq", 0);
392 MMC_UNLOCK(sc);
393 if (mmc_debug > 2 || (mmc_debug > 1 && req->cmd->error))
394 device_printf(sc->dev, "RESULT: %d\n", req->cmd->error);
395 return (0);
396}
397
398static int
399mmc_wait_for_request(device_t brdev, device_t reqdev, struct mmc_request *req)
400{
401 struct mmc_softc *sc = device_get_softc(brdev);
402
403 return (mmc_wait_for_req(sc, req));
404}
405
406static int
407mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd, int retries)
408{
409 struct mmc_request mreq;
410
411 memset(&mreq, 0, sizeof(mreq));
412 memset(cmd->resp, 0, sizeof(cmd->resp));
413 cmd->retries = retries;
414 mreq.cmd = cmd;
415 mmc_wait_for_req(sc, &mreq);
416 return (cmd->error);
417}
418
419static int
420mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca,
421 struct mmc_command *cmd, int retries)
422{
423 struct mmc_command appcmd;
424 int err = MMC_ERR_NONE, i;
425
426 for (i = 0; i <= retries; i++) {
427 appcmd.opcode = MMC_APP_CMD;
428 appcmd.arg = rca << 16;
429 appcmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
430 appcmd.data = NULL;
431 mmc_wait_for_cmd(sc, &appcmd, 0);
432 err = appcmd.error;
433 if (err != MMC_ERR_NONE)
434 continue;
435 if (!(appcmd.resp[0] & R1_APP_CMD))
436 return MMC_ERR_FAILED;
437 mmc_wait_for_cmd(sc, cmd, 0);
438 err = cmd->error;
439 if (err == MMC_ERR_NONE)
440 break;
441 }
442 return (err);
443}
444
445static int
446mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
447 uint32_t arg, uint32_t flags, uint32_t *resp, int retries)
448{
449 struct mmc_command cmd;
450 int err;
451
452 memset(&cmd, 0, sizeof(cmd));
453 cmd.opcode = opcode;
454 cmd.arg = arg;
455 cmd.flags = flags;
456 cmd.data = NULL;
457 err = mmc_wait_for_cmd(sc, &cmd, retries);
458 if (err)
459 return (err);
460 if (cmd.error)
461 return (cmd.error);
462 if (resp) {
463 if (flags & MMC_RSP_136)
464 memcpy(resp, cmd.resp, 4 * sizeof(uint32_t));
465 else
466 *resp = cmd.resp[0];
467 }
468 return (0);
469}
470
471static void
472mmc_idle_cards(struct mmc_softc *sc)
473{
474 device_t dev;
475 struct mmc_command cmd;
476
477 dev = sc->dev;
478 mmcbr_set_chip_select(dev, cs_high);
479 mmcbr_update_ios(dev);
480 mmc_ms_delay(1);
481
482 memset(&cmd, 0, sizeof(cmd));
483 cmd.opcode = MMC_GO_IDLE_STATE;
484 cmd.arg = 0;
485 cmd.flags = MMC_RSP_NONE | MMC_CMD_BC;
486 cmd.data = NULL;
487 mmc_wait_for_cmd(sc, &cmd, 0);
488 mmc_ms_delay(1);
489
490 mmcbr_set_chip_select(dev, cs_dontcare);
491 mmcbr_update_ios(dev);
492 mmc_ms_delay(1);
493}
494
495static int
496mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
497{
498 struct mmc_command cmd;
499 int err = MMC_ERR_NONE, i;
500
501 memset(&cmd, 0, sizeof(cmd));
502 cmd.opcode = ACMD_SD_SEND_OP_COND;
503 cmd.arg = ocr;
504 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
505 cmd.data = NULL;
506
507 for (i = 0; i < 1000; i++) {
508 err = mmc_wait_for_app_cmd(sc, 0, &cmd, CMD_RETRIES);
509 if (err != MMC_ERR_NONE)
510 break;
511 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
512 (ocr & MMC_OCR_VOLTAGE) == 0)
513 break;
514 err = MMC_ERR_TIMEOUT;
515 mmc_ms_delay(10);
516 }
517 if (rocr && err == MMC_ERR_NONE)
518 *rocr = cmd.resp[0];
519 return (err);
520}
521
522static int
523mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
524{
525 struct mmc_command cmd;
526 int err = MMC_ERR_NONE, i;
527
528 memset(&cmd, 0, sizeof(cmd));
529 cmd.opcode = MMC_SEND_OP_COND;
530 cmd.arg = ocr;
531 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
532 cmd.data = NULL;
533
534 for (i = 0; i < 1000; i++) {
535 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
536 if (err != MMC_ERR_NONE)
537 break;
538 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
539 (ocr & MMC_OCR_VOLTAGE) == 0)
540 break;
541 err = MMC_ERR_TIMEOUT;
542 mmc_ms_delay(10);
543 }
544 if (rocr && err == MMC_ERR_NONE)
545 *rocr = cmd.resp[0];
546 return (err);
547}
548
549static int
550mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs)
551{
552 struct mmc_command cmd;
553 int err;
554
555 memset(&cmd, 0, sizeof(cmd));
556 cmd.opcode = SD_SEND_IF_COND;
557 cmd.arg = (vhs << 8) + 0xAA;
558 cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR;
559 cmd.data = NULL;
560
561 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
562 return (err);
563}
564
565static void
566mmc_power_up(struct mmc_softc *sc)
567{
568 device_t dev;
569
570 dev = sc->dev;
571 mmcbr_set_vdd(dev, mmc_highest_voltage(mmcbr_get_host_ocr(dev)));
572 mmcbr_set_bus_mode(dev, opendrain);
573 mmcbr_set_chip_select(dev, cs_dontcare);
574 mmcbr_set_bus_width(dev, bus_width_1);
575 mmcbr_set_power_mode(dev, power_up);
576 mmcbr_set_clock(dev, 0);
577 mmcbr_update_ios(dev);
578 mmc_ms_delay(1);
579
580 mmcbr_set_clock(dev, mmcbr_get_f_min(sc->dev));
581 mmcbr_set_timing(dev, bus_timing_normal);
582 mmcbr_set_power_mode(dev, power_on);
583 mmcbr_update_ios(dev);
584 mmc_ms_delay(2);
585}
586
587static void
588mmc_power_down(struct mmc_softc *sc)
589{
590 device_t dev = sc->dev;
591
592 mmcbr_set_bus_mode(dev, opendrain);
593 mmcbr_set_chip_select(dev, cs_dontcare);
594 mmcbr_set_bus_width(dev, bus_width_1);
595 mmcbr_set_power_mode(dev, power_off);
596 mmcbr_set_clock(dev, 0);
597 mmcbr_set_timing(dev, bus_timing_normal);
598 mmcbr_update_ios(dev);
599}
600
601static int
602mmc_select_card(struct mmc_softc *sc, uint16_t rca)
603{
604 int flags;
605
606 flags = (rca ? MMC_RSP_R1B : MMC_RSP_NONE) | MMC_CMD_AC;
607 return (mmc_wait_for_command(sc, MMC_SELECT_CARD, (uint32_t)rca << 16,
608 flags, NULL, CMD_RETRIES));
609}
610
611static int
612mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index, uint8_t value)
613{
614 struct mmc_command cmd;
615 int err;
616
617 cmd.opcode = MMC_SWITCH_FUNC;
618 cmd.arg = (MMC_SWITCH_FUNC_WR << 24) |
619 (index << 16) |
620 (value << 8) |
621 set;
622 cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
623 cmd.data = NULL;
624 err = mmc_wait_for_cmd(sc, &cmd, 0);
625 return (err);
626}
627
628static int
629mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp, uint8_t value,
630 uint8_t *res)
631{
632 int err;
633 struct mmc_command cmd;
634 struct mmc_data data;
635
636 memset(&cmd, 0, sizeof(struct mmc_command));
637 memset(&data, 0, sizeof(struct mmc_data));
638 memset(res, 0, 64);
639
640 cmd.opcode = SD_SWITCH_FUNC;
641 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
642 cmd.arg = mode << 31; /* 0 - check, 1 - set */
643 cmd.arg |= 0x00FFFFFF;
644 cmd.arg &= ~(0xF << (grp * 4));
645 cmd.arg |= value << (grp * 4);
646 cmd.data = &data;
647
648 data.data = res;
649 data.len = 64;
650 data.flags = MMC_DATA_READ;
651
652 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
653 return (err);
654}
655
656static int
657mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, int width)
658{
659 struct mmc_command cmd;
660 int err;
661 uint8_t value;
662
663 if (mmcbr_get_mode(sc->dev) == mode_sd) {
664 memset(&cmd, 0, sizeof(struct mmc_command));
665 cmd.opcode = ACMD_SET_CLR_CARD_DETECT;
666 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
667 cmd.arg = SD_CLR_CARD_DETECT;
668 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
669 if (err != 0)
670 return (err);
671 memset(&cmd, 0, sizeof(struct mmc_command));
672 cmd.opcode = ACMD_SET_BUS_WIDTH;
673 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
674 switch (width) {
675 case bus_width_1:
676 cmd.arg = SD_BUS_WIDTH_1;
677 break;
678 case bus_width_4:
679 cmd.arg = SD_BUS_WIDTH_4;
680 break;
681 default:
682 return (MMC_ERR_INVALID);
683 }
684 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
685 } else {
686 switch (width) {
687 case bus_width_1:
688 value = EXT_CSD_BUS_WIDTH_1;
689 break;
690 case bus_width_4:
691 value = EXT_CSD_BUS_WIDTH_4;
692 break;
693 case bus_width_8:
694 value = EXT_CSD_BUS_WIDTH_8;
695 break;
696 default:
697 return (MMC_ERR_INVALID);
698 }
699 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
700 value);
701 }
702 return (err);
703}
704
705static int
706mmc_set_timing(struct mmc_softc *sc, int timing)
707{
708 int err;
709 uint8_t value;
710 u_char switch_res[64];
711
712 switch (timing) {
713 case bus_timing_normal:
714 value = 0;
715 break;
716 case bus_timing_hs:
717 value = 1;
718 break;
719 default:
720 return (MMC_ERR_INVALID);
721 }
722 if (mmcbr_get_mode(sc->dev) == mode_sd)
723 err = mmc_sd_switch(sc, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1,
724 value, switch_res);
725 else
726 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL,
727 EXT_CSD_HS_TIMING, value);
728 return (err);
729}
730
731static int
732mmc_test_bus_width(struct mmc_softc *sc)
733{
734 struct mmc_command cmd;
735 struct mmc_data data;
736 int err;
737 uint8_t buf[8];
738 uint8_t p8[8] = { 0x55, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
739 uint8_t p8ok[8] = { 0xAA, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
740 uint8_t p4[4] = { 0x5A, 0x00, 0x00, 0x00, };
741 uint8_t p4ok[4] = { 0xA5, 0x00, 0x00, 0x00, };
742
743 if (mmcbr_get_caps(sc->dev) & MMC_CAP_8_BIT_DATA) {
744 mmcbr_set_bus_width(sc->dev, bus_width_8);
745 mmcbr_update_ios(sc->dev);
746
747 cmd.opcode = MMC_BUSTEST_W;
748 cmd.arg = 0;
749 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
750 cmd.data = &data;
751
752 data.data = p8;
753 data.len = 8;
754 data.flags = MMC_DATA_WRITE;
755 mmc_wait_for_cmd(sc, &cmd, 0);
756
757 cmd.opcode = MMC_BUSTEST_R;
758 cmd.arg = 0;
759 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
760 cmd.data = &data;
761
762 data.data = buf;
763 data.len = 8;
764 data.flags = MMC_DATA_READ;
765 err = mmc_wait_for_cmd(sc, &cmd, 0);
766
767 mmcbr_set_bus_width(sc->dev, bus_width_1);
768 mmcbr_update_ios(sc->dev);
769
770 if (err == MMC_ERR_NONE && memcmp(buf, p8ok, 8) == 0)
771 return (bus_width_8);
772 }
773
774 if (mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) {
775 mmcbr_set_bus_width(sc->dev, bus_width_4);
776 mmcbr_update_ios(sc->dev);
777
778 cmd.opcode = MMC_BUSTEST_W;
779 cmd.arg = 0;
780 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
781 cmd.data = &data;
782
783 data.data = p4;
784 data.len = 4;
785 data.flags = MMC_DATA_WRITE;
786 mmc_wait_for_cmd(sc, &cmd, 0);
787
788 cmd.opcode = MMC_BUSTEST_R;
789 cmd.arg = 0;
790 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
791 cmd.data = &data;
792
793 data.data = buf;
794 data.len = 4;
795 data.flags = MMC_DATA_READ;
796 err = mmc_wait_for_cmd(sc, &cmd, 0);
797
798 mmcbr_set_bus_width(sc->dev, bus_width_1);
799 mmcbr_update_ios(sc->dev);
800
801 if (err == MMC_ERR_NONE && memcmp(buf, p4ok, 4) == 0)
802 return (bus_width_4);
803 }
804 return (bus_width_1);
805}
806
807static uint32_t
808mmc_get_bits(uint32_t *bits, int bit_len, int start, int size)
809{
810 const int i = (bit_len / 32) - (start / 32) - 1;
811 const int shift = start & 31;
812 uint32_t retval = bits[i] >> shift;
813 if (size + shift > 32)
814 retval |= bits[i - 1] << (32 - shift);
815 return (retval & ((1llu << size) - 1));
816}
817
818static void
819mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid)
820{
821 int i;
822
823 /* There's no version info, so we take it on faith */
824 memset(cid, 0, sizeof(*cid));
825 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
826 cid->oid = mmc_get_bits(raw_cid, 128, 104, 16);
827 for (i = 0; i < 5; i++)
828 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
829 cid->pnm[5] = 0;
830 cid->prv = mmc_get_bits(raw_cid, 128, 56, 8);
831 cid->psn = mmc_get_bits(raw_cid, 128, 24, 32);
832 cid->mdt_year = mmc_get_bits(raw_cid, 128, 12, 8) + 2000;
833 cid->mdt_month = mmc_get_bits(raw_cid, 128, 8, 4);
834}
835
836static void
837mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid)
838{
839 int i;
840
841 /* There's no version info, so we take it on faith */
842 memset(cid, 0, sizeof(*cid));
843 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
844 cid->oid = mmc_get_bits(raw_cid, 128, 104, 8);
845 for (i = 0; i < 6; i++)
846 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
847 cid->pnm[6] = 0;
848 cid->prv = mmc_get_bits(raw_cid, 128, 48, 8);
849 cid->psn = mmc_get_bits(raw_cid, 128, 16, 32);
850 cid->mdt_month = mmc_get_bits(raw_cid, 128, 12, 4);
851 cid->mdt_year = mmc_get_bits(raw_cid, 128, 8, 4) + 1997;
852}
853
854static void
855mmc_format_card_id_string(struct mmc_ivars *ivar)
856{
857 char oidstr[8];
858 uint8_t c1;
859 uint8_t c2;
860
861 /*
862 * Format a card ID string for use by the mmcsd driver, it's what
863 * appears between the <> in the following:
864 * mmcsd0: 968MB <SD SD01G 8.0 SN 2686905 Mfg 08/2008 by 3 TN> at mmc0
865 * 22.5MHz/4bit/128-block
866 *
867 * The card_id_string in mmc_ivars is currently allocated as 64 bytes,
868 * and our max formatted length is currently 55 bytes if every field
869 * contains the largest value.
870 *
871 * Sometimes the oid is two printable ascii chars; when it's not,
872 * format it as 0xnnnn instead.
873 */
874 c1 = (ivar->cid.oid >> 8) & 0x0ff;
875 c2 = ivar->cid.oid & 0x0ff;
876 if (c1 > 0x1f && c1 < 0x7f && c2 > 0x1f && c2 < 0x7f)
877 snprintf(oidstr, sizeof(oidstr), "%c%c", c1, c2);
878 else
879 snprintf(oidstr, sizeof(oidstr), "0x%04x", ivar->cid.oid);
880 snprintf(ivar->card_id_string, sizeof(ivar->card_id_string),
881 "%s%s %s %d.%d SN %d MFG %02d/%04d by %d %s",
882 ivar->mode == mode_sd ? "SD" : "MMC", ivar->high_cap ? "HC" : "",
883 ivar->cid.pnm, ivar->cid.prv >> 4, ivar->cid.prv & 0x0f,
884 ivar->cid.psn, ivar->cid.mdt_month, ivar->cid.mdt_year,
885 ivar->cid.mid, oidstr);
886}
887
888static const int exp[8] = {
889 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
890};
891
892static const int mant[16] = {
893 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80
894};
895
896static const int cur_min[8] = {
897 500, 1000, 5000, 10000, 25000, 35000, 60000, 100000
898};
899
900static const int cur_max[8] = {
901 1000, 5000, 10000, 25000, 35000, 45000, 800000, 200000
902};
903
904static void
905mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd)
906{
907 int v;
908 int m;
909 int e;
910
911 memset(csd, 0, sizeof(*csd));
912 csd->csd_structure = v = mmc_get_bits(raw_csd, 128, 126, 2);
913 if (v == 0) {
914 m = mmc_get_bits(raw_csd, 128, 115, 4);
915 e = mmc_get_bits(raw_csd, 128, 112, 3);
916 csd->tacc = (exp[e] * mant[m] + 9) / 10;
917 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
918 m = mmc_get_bits(raw_csd, 128, 99, 4);
919 e = mmc_get_bits(raw_csd, 128, 96, 3);
920 csd->tran_speed = exp[e] * 10000 * mant[m];
921 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
922 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
923 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
924 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
925 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
926 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
927 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
928 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
929 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
930 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
931 m = mmc_get_bits(raw_csd, 128, 62, 12);
932 e = mmc_get_bits(raw_csd, 128, 47, 3);
933 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
934 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
935 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
936 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
937 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
938 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
939 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
940 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
941 } else if (v == 1) {
942 m = mmc_get_bits(raw_csd, 128, 115, 4);
943 e = mmc_get_bits(raw_csd, 128, 112, 3);
944 csd->tacc = (exp[e] * mant[m] + 9) / 10;
945 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
946 m = mmc_get_bits(raw_csd, 128, 99, 4);
947 e = mmc_get_bits(raw_csd, 128, 96, 3);
948 csd->tran_speed = exp[e] * 10000 * mant[m];
949 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
950 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
951 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
952 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
953 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
954 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
955 csd->capacity = ((uint64_t)mmc_get_bits(raw_csd, 128, 48, 22) + 1) *
956 512 * 1024;
957 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
958 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
959 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
960 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
961 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
962 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
963 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
964 } else
965 panic("unknown SD CSD version");
966}
967
968static void
969mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd)
970{
971 int m;
972 int e;
973
974 memset(csd, 0, sizeof(*csd));
975 csd->csd_structure = mmc_get_bits(raw_csd, 128, 126, 2);
976 csd->spec_vers = mmc_get_bits(raw_csd, 128, 122, 4);
977 m = mmc_get_bits(raw_csd, 128, 115, 4);
978 e = mmc_get_bits(raw_csd, 128, 112, 3);
979 csd->tacc = exp[e] * mant[m] + 9 / 10;
980 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
981 m = mmc_get_bits(raw_csd, 128, 99, 4);
982 e = mmc_get_bits(raw_csd, 128, 96, 3);
983 csd->tran_speed = exp[e] * 10000 * mant[m];
984 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
985 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
986 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
987 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
988 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
989 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
990 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
991 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
992 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
993 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
994 m = mmc_get_bits(raw_csd, 128, 62, 12);
995 e = mmc_get_bits(raw_csd, 128, 47, 3);
996 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
997 csd->erase_blk_en = 0;
998 csd->erase_sector = (mmc_get_bits(raw_csd, 128, 42, 5) + 1) *
999 (mmc_get_bits(raw_csd, 128, 37, 5) + 1);
1000 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 5);
1001 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
1002 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
1003 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
1004 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
1005}
1006
1007static void
1008mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr)
1009{
1010 unsigned int scr_struct;
1011
1012 memset(scr, 0, sizeof(*scr));
1013
1014 scr_struct = mmc_get_bits(raw_scr, 64, 60, 4);
1015 if (scr_struct != 0) {
1016 printf("Unrecognised SCR structure version %d\n",
1017 scr_struct);
1018 return;
1019 }
1020 scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4);
1021 scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4);
1022}
1023
1024static void
1025mmc_app_decode_sd_status(uint32_t *raw_sd_status,
1026 struct mmc_sd_status *sd_status)
1027{
1028
1029 memset(sd_status, 0, sizeof(*sd_status));
1030
1031 sd_status->bus_width = mmc_get_bits(raw_sd_status, 512, 510, 2);
1032 sd_status->secured_mode = mmc_get_bits(raw_sd_status, 512, 509, 1);
1033 sd_status->card_type = mmc_get_bits(raw_sd_status, 512, 480, 16);
1034 sd_status->prot_area = mmc_get_bits(raw_sd_status, 512, 448, 12);
1035 sd_status->speed_class = mmc_get_bits(raw_sd_status, 512, 440, 8);
1036 sd_status->perf_move = mmc_get_bits(raw_sd_status, 512, 432, 8);
1037 sd_status->au_size = mmc_get_bits(raw_sd_status, 512, 428, 4);
1038 sd_status->erase_size = mmc_get_bits(raw_sd_status, 512, 408, 16);
1039 sd_status->erase_timeout = mmc_get_bits(raw_sd_status, 512, 402, 6);
1040 sd_status->erase_offset = mmc_get_bits(raw_sd_status, 512, 400, 2);
1041}
1042
1043static int
1044mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid)
1045{
1046 struct mmc_command cmd;
1047 int err;
1048
1049 cmd.opcode = MMC_ALL_SEND_CID;
1050 cmd.arg = 0;
1051 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
1052 cmd.data = NULL;
1053 err = mmc_wait_for_cmd(sc, &cmd, 0);
1054 memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t));
1055 return (err);
1056}
1057
1058static int
1059mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd)
1060{
1061 struct mmc_command cmd;
1062 int err;
1063
1064 cmd.opcode = MMC_SEND_CSD;
1065 cmd.arg = rca << 16;
1066 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
1067 cmd.data = NULL;
1068 err = mmc_wait_for_cmd(sc, &cmd, 0);
1069 memcpy(rawcsd, cmd.resp, 4 * sizeof(uint32_t));
1070 return (err);
1071}
1072
1073static int
1074mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr)
1075{
1076 int err;
1077 struct mmc_command cmd;
1078 struct mmc_data data;
1079
1080 memset(&cmd, 0, sizeof(struct mmc_command));
1081 memset(&data, 0, sizeof(struct mmc_data));
1082
1083 memset(rawscr, 0, 8);
1084 cmd.opcode = ACMD_SEND_SCR;
1085 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1086 cmd.arg = 0;
1087 cmd.data = &data;
1088
1089 data.data = rawscr;
1090 data.len = 8;
1091 data.flags = MMC_DATA_READ;
1092
1093 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
1094 rawscr[0] = be32toh(rawscr[0]);
1095 rawscr[1] = be32toh(rawscr[1]);
1096 return (err);
1097}
1098
1099static int
1100mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd)
1101{
1102 int err;
1103 struct mmc_command cmd;
1104 struct mmc_data data;
1105
1106 memset(&cmd, 0, sizeof(struct mmc_command));
1107 memset(&data, 0, sizeof(struct mmc_data));
1108
1109 memset(rawextcsd, 0, 512);
1110 cmd.opcode = MMC_SEND_EXT_CSD;
1111 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1112 cmd.arg = 0;
1113 cmd.data = &data;
1114
1115 data.data = rawextcsd;
1116 data.len = 512;
1117 data.flags = MMC_DATA_READ;
1118
1119 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1120 return (err);
1121}
1122
1123static int
1124mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, uint32_t *rawsdstatus)
1125{
1126 int err, i;
1127 struct mmc_command cmd;
1128 struct mmc_data data;
1129
1130 memset(&cmd, 0, sizeof(struct mmc_command));
1131 memset(&data, 0, sizeof(struct mmc_data));
1132
1133 memset(rawsdstatus, 0, 64);
1134 cmd.opcode = ACMD_SD_STATUS;
1135 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1136 cmd.arg = 0;
1137 cmd.data = &data;
1138
1139 data.data = rawsdstatus;
1140 data.len = 64;
1141 data.flags = MMC_DATA_READ;
1142
1143 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
1144 for (i = 0; i < 16; i++)
1145 rawsdstatus[i] = be32toh(rawsdstatus[i]);
1146 return (err);
1147}
1148
1149static int
1150mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp)
1151{
1152 struct mmc_command cmd;
1153 int err;
1154
1155 cmd.opcode = MMC_SET_RELATIVE_ADDR;
1156 cmd.arg = resp << 16;
1157 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
1158 cmd.data = NULL;
1159 err = mmc_wait_for_cmd(sc, &cmd, 0);
1160 return (err);
1161}
1162
1163static int
1164mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp)
1165{
1166 struct mmc_command cmd;
1167 int err;
1168
1169 cmd.opcode = SD_SEND_RELATIVE_ADDR;
1170 cmd.arg = 0;
1171 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
1172 cmd.data = NULL;
1173 err = mmc_wait_for_cmd(sc, &cmd, 0);
1174 *resp = cmd.resp[0];
1175 return (err);
1176}
1177
1178static int
1179mmc_send_status(struct mmc_softc *sc, uint16_t rca, uint32_t *status)
1180{
1181 struct mmc_command cmd;
1182 int err;
1183
1184 cmd.opcode = MMC_SEND_STATUS;
1185 cmd.arg = rca << 16;
1186 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
1187 cmd.data = NULL;
1188 err = mmc_wait_for_cmd(sc, &cmd, 0);
1189 *status = cmd.resp[0];
1190 return (err);
1191}
1192
1193static int
1194mmc_set_blocklen(struct mmc_softc *sc, uint32_t len)
1195{
1196 struct mmc_command cmd;
1197 int err;
1198
1199 cmd.opcode = MMC_SET_BLOCKLEN;
1200 cmd.arg = len;
1201 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
1202 cmd.data = NULL;
1203 err = mmc_wait_for_cmd(sc, &cmd, 0);
1204 return (err);
1205}
1206
1207static void
1208mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard)
1209{
1210 device_printf(dev, "Card at relative address %d%s:\n",
1211 ivar->rca, newcard ? " added" : "");
1212 device_printf(dev, " card: %s\n", ivar->card_id_string);
1213 device_printf(dev, " bus: %ubit, %uMHz%s\n",
1214 (ivar->bus_width == bus_width_1 ? 1 :
1215 (ivar->bus_width == bus_width_4 ? 4 : 8)),
1216 (ivar->timing == bus_timing_hs ?
1217 ivar->hs_tran_speed : ivar->tran_speed) / 1000000,
1218 ivar->timing == bus_timing_hs ? ", high speed timing" : "");
1219 device_printf(dev, " memory: %u blocks, erase sector %u blocks%s\n",
1220 ivar->sec_count, ivar->erase_sector,
1221 ivar->read_only ? ", read-only" : "");
1222}
1223
1224static void
1225mmc_discover_cards(struct mmc_softc *sc)
1226{
1227 struct mmc_ivars *ivar = NULL;
1228 device_t *devlist;
1229 int err, i, devcount, newcard;
1230 uint32_t raw_cid[4], resp, sec_count, status;
1231 device_t child;
1232 uint16_t rca = 2;
1233 u_char switch_res[64];
1234
1235 if (bootverbose || mmc_debug)
1236 device_printf(sc->dev, "Probing cards\n");
1237 while (1) {
1238 err = mmc_all_send_cid(sc, raw_cid);
1239 if (err == MMC_ERR_TIMEOUT)
1240 break;
1241 if (err != MMC_ERR_NONE) {
1242 device_printf(sc->dev, "Error reading CID %d\n", err);
1243 break;
1244 }
1245 newcard = 1;
1246 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
1247 return;
1248 for (i = 0; i < devcount; i++) {
1249 ivar = device_get_ivars(devlist[i]);
1250 if (memcmp(ivar->raw_cid, raw_cid, sizeof(raw_cid)) == 0) {
1251 newcard = 0;
1252 break;
1253 }
1254 }
1255 free(devlist, M_TEMP);
1256 if (bootverbose || mmc_debug) {
1257 device_printf(sc->dev, "%sard detected (CID %08x%08x%08x%08x)\n",
1258 newcard ? "New c" : "C",
1259 raw_cid[0], raw_cid[1], raw_cid[2], raw_cid[3]);
1260 }
1261 if (newcard) {
1262 ivar = malloc(sizeof(struct mmc_ivars), M_DEVBUF,
1263 M_WAITOK | M_ZERO);
1264 memcpy(ivar->raw_cid, raw_cid, sizeof(raw_cid));
1265 }
1266 if (mmcbr_get_ro(sc->dev))
1267 ivar->read_only = 1;
1268 ivar->bus_width = bus_width_1;
1269 ivar->timing = bus_timing_normal;
1270 ivar->mode = mmcbr_get_mode(sc->dev);
1271 if (ivar->mode == mode_sd) {
1272 mmc_decode_cid_sd(ivar->raw_cid, &ivar->cid);
1273 mmc_send_relative_addr(sc, &resp);
1274 ivar->rca = resp >> 16;
1275 /* Get card CSD. */
1276 mmc_send_csd(sc, ivar->rca, ivar->raw_csd);
1277 if (bootverbose || mmc_debug)
1278 device_printf(sc->dev,
1279 "%sard detected (CSD %08x%08x%08x%08x)\n",
1280 newcard ? "New c" : "C", ivar->raw_csd[0],
1281 ivar->raw_csd[1], ivar->raw_csd[2],
1282 ivar->raw_csd[3]);
1283 mmc_decode_csd_sd(ivar->raw_csd, &ivar->csd);
1284 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE;
1285 if (ivar->csd.csd_structure > 0)
1286 ivar->high_cap = 1;
1287 ivar->tran_speed = ivar->csd.tran_speed;
1288 ivar->erase_sector = ivar->csd.erase_sector *
1289 ivar->csd.write_bl_len / MMC_SECTOR_SIZE;
1290
1291 err = mmc_send_status(sc, ivar->rca, &status);
1292 if (err != MMC_ERR_NONE) {
1293 device_printf(sc->dev,
1294 "Error reading card status %d\n", err);
1295 break;
1296 }
1297 if ((status & R1_CARD_IS_LOCKED) != 0) {
1298 device_printf(sc->dev,
1299 "Card is password protected, skipping.\n");
1300 break;
1301 }
1302
1303 /* Get card SCR. Card must be selected to fetch it. */
1304 mmc_select_card(sc, ivar->rca);
1305 mmc_app_send_scr(sc, ivar->rca, ivar->raw_scr);
1306 mmc_app_decode_scr(ivar->raw_scr, &ivar->scr);
1307 /* Get card switch capabilities (command class 10). */
1308 if ((ivar->scr.sda_vsn >= 1) &&
1309 (ivar->csd.ccc & (1<<10))) {
1310 mmc_sd_switch(sc, SD_SWITCH_MODE_CHECK,
1311 SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE,
1312 switch_res);
1313 if (switch_res[13] & 2) {
1314 ivar->timing = bus_timing_hs;
1315 ivar->hs_tran_speed = SD_MAX_HS;
1316 }
1317 }
1318 mmc_app_sd_status(sc, ivar->rca, ivar->raw_sd_status);
1319 mmc_app_decode_sd_status(ivar->raw_sd_status,
1320 &ivar->sd_status);
1321 if (ivar->sd_status.au_size != 0) {
1322 ivar->erase_sector =
1323 16 << ivar->sd_status.au_size;
1324 }
1325 mmc_select_card(sc, 0);
1326 /* Find max supported bus width. */
1327 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) &&
1328 (ivar->scr.bus_widths & SD_SCR_BUS_WIDTH_4))
1329 ivar->bus_width = bus_width_4;
1330
1331 /*
1332 * Some cards that report maximum I/O block sizes
1333 * greater than 512 require the block length to be
1334 * set to 512, even though that is supposed to be
1335 * the default. Example:
1336 *
1337 * Transcend 2GB SDSC card, CID:
1338 * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000
1339 */
1340 if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE ||
1341 ivar->csd.write_bl_len != MMC_SECTOR_SIZE)
1342 mmc_set_blocklen(sc, MMC_SECTOR_SIZE);
1343
1344 mmc_format_card_id_string(ivar);
1345
1346 if (bootverbose || mmc_debug)
1347 mmc_log_card(sc->dev, ivar, newcard);
1348 if (newcard) {
1349 /* Add device. */
1350 child = device_add_child(sc->dev, NULL, -1);
1351 device_set_ivars(child, ivar);
1352 }
1353 return;
1354 }
1355 mmc_decode_cid_mmc(ivar->raw_cid, &ivar->cid);
1356 ivar->rca = rca++;
1357 mmc_set_relative_addr(sc, ivar->rca);
1358 /* Get card CSD. */
1359 mmc_send_csd(sc, ivar->rca, ivar->raw_csd);
1360 if (bootverbose || mmc_debug)
1361 device_printf(sc->dev,
1362 "%sard detected (CSD %08x%08x%08x%08x)\n",
1363 newcard ? "New c" : "C", ivar->raw_csd[0],
1364 ivar->raw_csd[1], ivar->raw_csd[2],
1365 ivar->raw_csd[3]);
1366
1367 mmc_decode_csd_mmc(ivar->raw_csd, &ivar->csd);
1368 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE;
1369 ivar->tran_speed = ivar->csd.tran_speed;
1370 ivar->erase_sector = ivar->csd.erase_sector *
1371 ivar->csd.write_bl_len / MMC_SECTOR_SIZE;
1372
1373 err = mmc_send_status(sc, ivar->rca, &status);
1374 if (err != MMC_ERR_NONE) {
1375 device_printf(sc->dev,
1376 "Error reading card status %d\n", err);
1377 break;
1378 }
1379 if ((status & R1_CARD_IS_LOCKED) != 0) {
1380 device_printf(sc->dev,
1381 "Card is password protected, skipping.\n");
1382 break;
1383 }
1384
1385 /* Only MMC >= 4.x cards support EXT_CSD. */
1386 if (ivar->csd.spec_vers >= 4) {
1387 /* Card must be selected to fetch EXT_CSD. */
1388 mmc_select_card(sc, ivar->rca);
1389 mmc_send_ext_csd(sc, ivar->raw_ext_csd);
1390 /* Handle extended capacity from EXT_CSD */
1391 sec_count = ivar->raw_ext_csd[EXT_CSD_SEC_CNT] +
1392 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) +
1393 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) +
1394 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1395 if (sec_count != 0) {
1396 ivar->sec_count = sec_count;
1397 ivar->high_cap = 1;
1398 }
1399 /* Get card speed in high speed mode. */
1400 ivar->timing = bus_timing_hs;
1401 if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE]
1402 & EXT_CSD_CARD_TYPE_52)
1403 ivar->hs_tran_speed = MMC_TYPE_52_MAX_HS;
1404 else if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE]
1405 & EXT_CSD_CARD_TYPE_26)
1406 ivar->hs_tran_speed = MMC_TYPE_26_MAX_HS;
1407 else
1408 ivar->hs_tran_speed = ivar->tran_speed;
1409 /* Find max supported bus width. */
1410 ivar->bus_width = mmc_test_bus_width(sc);
1411 mmc_select_card(sc, 0);
1412 /* Handle HC erase sector size. */
1413 if (ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE] != 0) {
1414 ivar->erase_sector = 1024 *
1415 ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE];
1416 mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL,
1417 EXT_CSD_ERASE_GRP_DEF, 1);
1418 }
1419 } else {
1420 ivar->bus_width = bus_width_1;
1421 ivar->timing = bus_timing_normal;
1422 }
1423
1424 /*
1425 * Some cards that report maximum I/O block sizes greater
1426 * than 512 require the block length to be set to 512, even
1427 * though that is supposed to be the default. Example:
1428 *
1429 * Transcend 2GB SDSC card, CID:
1430 * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000
1431 */
1432 if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE ||
1433 ivar->csd.write_bl_len != MMC_SECTOR_SIZE)
1434 mmc_set_blocklen(sc, MMC_SECTOR_SIZE);
1435
1436 mmc_format_card_id_string(ivar);
1437
1438 if (bootverbose || mmc_debug)
1439 mmc_log_card(sc->dev, ivar, newcard);
1440 if (newcard) {
1441 /* Add device. */
1442 child = device_add_child(sc->dev, NULL, -1);
1443 device_set_ivars(child, ivar);
1444 }
1445 }
1446}
1447
1448static void
1449mmc_rescan_cards(struct mmc_softc *sc)
1450{
1451 struct mmc_ivars *ivar = NULL;
1452 device_t *devlist;
1453 int err, i, devcount;
1454
1455 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
1456 return;
1457 for (i = 0; i < devcount; i++) {
1458 ivar = device_get_ivars(devlist[i]);
1459 if (mmc_select_card(sc, ivar->rca)) {
1460 if (bootverbose || mmc_debug)
1461 device_printf(sc->dev, "Card at relative address %d lost.\n",
1462 ivar->rca);
1463 device_delete_child(sc->dev, devlist[i]);
1464 free(ivar, M_DEVBUF);
1465 }
1466 }
1467 free(devlist, M_TEMP);
1468 mmc_select_card(sc, 0);
1469}
1470
1471static int
1472mmc_delete_cards(struct mmc_softc *sc)
1473{
1474 struct mmc_ivars *ivar;
1475 device_t *devlist;
1476 int err, i, devcount;
1477
1478 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
1479 return (err);
1480 for (i = 0; i < devcount; i++) {
1481 ivar = device_get_ivars(devlist[i]);
1482 if (bootverbose || mmc_debug)
1483 device_printf(sc->dev, "Card at relative address %d deleted.\n",
1484 ivar->rca);
1485 device_delete_child(sc->dev, devlist[i]);
1486 free(ivar, M_DEVBUF);
1487 }
1488 free(devlist, M_TEMP);
1489 return (0);
1490}
1491
1492static void
1493mmc_go_discovery(struct mmc_softc *sc)
1494{
1495 uint32_t ocr;
1496 device_t dev;
1497 int err;
1498
1499 dev = sc->dev;
1500 if (mmcbr_get_power_mode(dev) != power_on) {
1501 /*
1502 * First, try SD modes
1503 */
1504 mmcbr_set_mode(dev, mode_sd);
1505 mmc_power_up(sc);
1506 mmcbr_set_bus_mode(dev, pushpull);
1507 if (bootverbose || mmc_debug)
1508 device_printf(sc->dev, "Probing bus\n");
1509 mmc_idle_cards(sc);
1510 err = mmc_send_if_cond(sc, 1);
1511 if ((bootverbose || mmc_debug) && err == 0)
1512 device_printf(sc->dev, "SD 2.0 interface conditions: OK\n");
1513 if (mmc_send_app_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) {
1514 if (bootverbose || mmc_debug)
1515 device_printf(sc->dev, "SD probe: failed\n");
1516 /*
1517 * Failed, try MMC
1518 */
1519 mmcbr_set_mode(dev, mode_mmc);
1520 if (mmc_send_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) {
1521 if (bootverbose || mmc_debug)
1522 device_printf(sc->dev, "MMC probe: failed\n");
1523 ocr = 0; /* Failed both, powerdown. */
1524 } else if (bootverbose || mmc_debug)
1525 device_printf(sc->dev,
1526 "MMC probe: OK (OCR: 0x%08x)\n", ocr);
1527 } else if (bootverbose || mmc_debug)
1528 device_printf(sc->dev, "SD probe: OK (OCR: 0x%08x)\n", ocr);
1529
1530 mmcbr_set_ocr(dev, mmc_select_vdd(sc, ocr));
1531 if (mmcbr_get_ocr(dev) != 0)
1532 mmc_idle_cards(sc);
1533 } else {
1534 mmcbr_set_bus_mode(dev, opendrain);
1535 mmcbr_set_clock(dev, mmcbr_get_f_min(dev));
1536 mmcbr_update_ios(dev);
1537 /* XXX recompute vdd based on new cards? */
1538 }
1539 /*
1540 * Make sure that we have a mutually agreeable voltage to at least
1541 * one card on the bus.
1542 */
1543 if (bootverbose || mmc_debug)
1544 device_printf(sc->dev, "Current OCR: 0x%08x\n", mmcbr_get_ocr(dev));
1545 if (mmcbr_get_ocr(dev) == 0) {
1546 mmc_delete_cards(sc);
1547 mmc_power_down(sc);
1548 return;
1549 }
1550 /*
1551 * Reselect the cards after we've idled them above.
1552 */
1553 if (mmcbr_get_mode(dev) == mode_sd) {
1554 err = mmc_send_if_cond(sc, 1);
1555 mmc_send_app_op_cond(sc,
1556 (err ? 0 : MMC_OCR_CCS) | mmcbr_get_ocr(dev), NULL);
1557 } else
1558 mmc_send_op_cond(sc, mmcbr_get_ocr(dev), NULL);
1559 mmc_discover_cards(sc);
1560 mmc_rescan_cards(sc);
1561
1562 mmcbr_set_bus_mode(dev, pushpull);
1563 mmcbr_update_ios(dev);
1564 mmc_calculate_clock(sc);
1565 bus_generic_attach(dev);
1566/* mmc_update_children_sysctl(dev);*/
1567}
1568
1569static int
1570mmc_calculate_clock(struct mmc_softc *sc)
1571{
1572 int max_dtr, max_hs_dtr, max_timing;
1573 int nkid, i, f_min, f_max;
1574 device_t *kids;
1575 struct mmc_ivars *ivar;
1576
1577 f_min = mmcbr_get_f_min(sc->dev);
1578 f_max = mmcbr_get_f_max(sc->dev);
1579 max_dtr = max_hs_dtr = f_max;
1580 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_HSPEED))
1581 max_timing = bus_timing_hs;
1582 else
1583 max_timing = bus_timing_normal;
1584 if (device_get_children(sc->dev, &kids, &nkid) != 0)
1585 panic("can't get children");
1586 for (i = 0; i < nkid; i++) {
1587 ivar = device_get_ivars(kids[i]);
1588 if (ivar->timing < max_timing)
1589 max_timing = ivar->timing;
1590 if (ivar->tran_speed < max_dtr)
1591 max_dtr = ivar->tran_speed;
1592 if (ivar->hs_tran_speed < max_hs_dtr)
1593 max_hs_dtr = ivar->hs_tran_speed;
1594 }
1595 for (i = 0; i < nkid; i++) {
1596 ivar = device_get_ivars(kids[i]);
1597 if (ivar->timing == bus_timing_normal)
1598 continue;
1599 mmc_select_card(sc, ivar->rca);
1600 mmc_set_timing(sc, max_timing);
1601 }
1602 mmc_select_card(sc, 0);
1603 free(kids, M_TEMP);
1604 if (max_timing == bus_timing_hs)
1605 max_dtr = max_hs_dtr;
1606 if (bootverbose || mmc_debug) {
1607 device_printf(sc->dev,
1608 "setting transfer rate to %d.%03dMHz%s\n",
1609 max_dtr / 1000000, (max_dtr / 1000) % 1000,
1610 max_timing == bus_timing_hs ? " (high speed timing)" : "");
1611 }
1612 mmcbr_set_timing(sc->dev, max_timing);
1613 mmcbr_set_clock(sc->dev, max_dtr);
1614 mmcbr_update_ios(sc->dev);
1615 return max_dtr;
1616}
1617
1618static void
1619mmc_scan(struct mmc_softc *sc)
1620{
1621 device_t dev = sc->dev;
1622
1623 mmc_acquire_bus(dev, dev);
1624 mmc_go_discovery(sc);
1625 mmc_release_bus(dev, dev);
1626}
1627
1628static int
1629mmc_read_ivar(device_t bus, device_t child, int which, uintptr_t *result)
1630{
1631 struct mmc_ivars *ivar = device_get_ivars(child);
1632
1633 switch (which) {
1634 default:
1635 return (EINVAL);
1636 case MMC_IVAR_DSR_IMP:
1637 *result = ivar->csd.dsr_imp;
1638 break;
1639 case MMC_IVAR_MEDIA_SIZE:
1640 *result = ivar->sec_count;
1641 break;
1642 case MMC_IVAR_RCA:
1643 *result = ivar->rca;
1644 break;
1645 case MMC_IVAR_SECTOR_SIZE:
1646 *result = MMC_SECTOR_SIZE;
1647 break;
1648 case MMC_IVAR_TRAN_SPEED:
1649 *result = mmcbr_get_clock(bus);
1650 break;
1651 case MMC_IVAR_READ_ONLY:
1652 *result = ivar->read_only;
1653 break;
1654 case MMC_IVAR_HIGH_CAP:
1655 *result = ivar->high_cap;
1656 break;
1657 case MMC_IVAR_CARD_TYPE:
1658 *result = ivar->mode;
1659 break;
1660 case MMC_IVAR_BUS_WIDTH:
1661 *result = ivar->bus_width;
1662 break;
1663 case MMC_IVAR_ERASE_SECTOR:
1664 *result = ivar->erase_sector;
1665 break;
1666 case MMC_IVAR_MAX_DATA:
1667 *result = mmcbr_get_max_data(bus);
1668 break;
1669 case MMC_IVAR_CARD_ID_STRING:
1670 *(char **)result = ivar->card_id_string;
1671 break;
1672 }
1673 return (0);
1674}
1675
1676static int
1677mmc_write_ivar(device_t bus, device_t child, int which, uintptr_t value)
1678{
1679 /*
1680 * None are writable ATM
1681 */
1682 return (EINVAL);
1683}
1684
1685static void
1686mmc_delayed_attach(void *xsc)
1687{
1688 struct mmc_softc *sc = xsc;
1689
1690 mmc_scan(sc);
1691 config_intrhook_disestablish(&sc->config_intrhook);
1692}
1693
1694static int
1695mmc_child_location_str(device_t dev, device_t child, char *buf,
1696 size_t buflen)
1697{
1698
1699 snprintf(buf, buflen, "rca=0x%04x", mmc_get_rca(child));
1700 return (0);
1701}
1702
1703static device_method_t mmc_methods[] = {
1704 /* device_if */
1705 DEVMETHOD(device_probe, mmc_probe),
1706 DEVMETHOD(device_attach, mmc_attach),
1707 DEVMETHOD(device_detach, mmc_detach),
1708 DEVMETHOD(device_suspend, mmc_suspend),
1709 DEVMETHOD(device_resume, mmc_resume),
1710
1711 /* Bus interface */
1712 DEVMETHOD(bus_read_ivar, mmc_read_ivar),
1713 DEVMETHOD(bus_write_ivar, mmc_write_ivar),
1714 DEVMETHOD(bus_child_location_str, mmc_child_location_str),
1715
1716 /* MMC Bus interface */
1717 DEVMETHOD(mmcbus_wait_for_request, mmc_wait_for_request),
1718 DEVMETHOD(mmcbus_acquire_bus, mmc_acquire_bus),
1719 DEVMETHOD(mmcbus_release_bus, mmc_release_bus),
1720
1721 DEVMETHOD_END
1722};
1723
1724static driver_t mmc_driver = {
1725 "mmc",
1726 mmc_methods,
1727 sizeof(struct mmc_softc),
1728};
1729static devclass_t mmc_devclass;
1730
1731DRIVER_MODULE(mmc, ti_mmchs, mmc_driver, mmc_devclass, NULL, NULL);
1732DRIVER_MODULE(mmc, at91_mci, mmc_driver, mmc_devclass, NULL, NULL);
1733DRIVER_MODULE(mmc, sdhci_pci, mmc_driver, mmc_devclass, NULL, NULL);
1734DRIVER_MODULE(mmc, sdhci_bcm, mmc_driver, mmc_devclass, NULL, NULL);
2 * Copyright (c) 2006 Bernd Walter. All rights reserved.
3 * Copyright (c) 2006 M. Warner Losh. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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.
24 *
25 * Portions of this software may have been developed with reference to
26 * the SD Simplified Specification. The following disclaimer may apply:
27 *
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.
36 *
37 * Disclaimers:
38 *
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.
51 */
52
53#include <sys/cdefs.h>
54__FBSDID("$FreeBSD: head/sys/dev/mmc/mmc.c 242321 2012-10-29 17:23:45Z gonzo $");
55
56#include <sys/param.h>
57#include <sys/systm.h>
58#include <sys/kernel.h>
59#include <sys/malloc.h>
60#include <sys/lock.h>
61#include <sys/module.h>
62#include <sys/mutex.h>
63#include <sys/bus.h>
64#include <sys/endian.h>
65#include <sys/sysctl.h>
66
67#include <dev/mmc/mmcreg.h>
68#include <dev/mmc/mmcbrvar.h>
69#include <dev/mmc/mmcvar.h>
70#include "mmcbr_if.h"
71#include "mmcbus_if.h"
72
73struct mmc_softc {
74 device_t dev;
75 struct mtx sc_mtx;
76 struct intr_config_hook config_intrhook;
77 device_t owner;
78 uint32_t last_rca;
79};
80
81/*
82 * Per-card data
83 */
84struct mmc_ivars {
85 uint32_t raw_cid[4]; /* Raw bits of the CID */
86 uint32_t raw_csd[4]; /* Raw bits of the CSD */
87 uint32_t raw_scr[2]; /* Raw bits of the SCR */
88 uint8_t raw_ext_csd[512]; /* Raw bits of the EXT_CSD */
89 uint32_t raw_sd_status[16]; /* Raw bits of the SD_STATUS */
90 uint16_t rca;
91 enum mmc_card_mode mode;
92 struct mmc_cid cid; /* cid decoded */
93 struct mmc_csd csd; /* csd decoded */
94 struct mmc_scr scr; /* scr decoded */
95 struct mmc_sd_status sd_status; /* SD_STATUS decoded */
96 u_char read_only; /* True when the device is read-only */
97 u_char bus_width; /* Bus width to use */
98 u_char timing; /* Bus timing support */
99 u_char high_cap; /* High Capacity card (block addressed) */
100 uint32_t sec_count; /* Card capacity in 512byte blocks */
101 uint32_t tran_speed; /* Max speed in normal mode */
102 uint32_t hs_tran_speed; /* Max speed in high speed mode */
103 uint32_t erase_sector; /* Card native erase sector size */
104 char card_id_string[64];/* Formatted CID info (serial, MFG, etc) */
105};
106
107#define CMD_RETRIES 3
108
109static SYSCTL_NODE(_hw, OID_AUTO, mmc, CTLFLAG_RD, NULL, "mmc driver");
110
111static int mmc_debug;
112SYSCTL_INT(_hw_mmc, OID_AUTO, debug, CTLFLAG_RW, &mmc_debug, 0, "Debug level");
113
114/* bus entry points */
115static int mmc_acquire_bus(device_t busdev, device_t dev);
116static int mmc_attach(device_t dev);
117static int mmc_child_location_str(device_t dev, device_t child, char *buf,
118 size_t buflen);
119static int mmc_detach(device_t dev);
120static int mmc_probe(device_t dev);
121static int mmc_read_ivar(device_t bus, device_t child, int which,
122 uintptr_t *result);
123static int mmc_release_bus(device_t busdev, device_t dev);
124static int mmc_resume(device_t dev);
125static int mmc_suspend(device_t dev);
126static int mmc_wait_for_request(device_t brdev, device_t reqdev,
127 struct mmc_request *req);
128static int mmc_write_ivar(device_t bus, device_t child, int which,
129 uintptr_t value);
130
131#define MMC_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
132#define MMC_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
133#define MMC_LOCK_INIT(_sc) \
134 mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->dev), \
135 "mmc", MTX_DEF)
136#define MMC_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
137#define MMC_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED);
138#define MMC_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
139
140static int mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid);
141static void mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr);
142static void mmc_app_decode_sd_status(uint32_t *raw_sd_status,
143 struct mmc_sd_status *sd_status);
144static int mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca,
145 uint32_t *rawsdstatus);
146static int mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca,
147 uint32_t *rawscr);
148static int mmc_calculate_clock(struct mmc_softc *sc);
149static void mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid);
150static void mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid);
151static void mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd);
152static void mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd);
153static void mmc_delayed_attach(void *xsc);
154static int mmc_delete_cards(struct mmc_softc *sc);
155static void mmc_discover_cards(struct mmc_softc *sc);
156static void mmc_format_card_id_string(struct mmc_ivars *ivar);
157static void mmc_go_discovery(struct mmc_softc *sc);
158static uint32_t mmc_get_bits(uint32_t *bits, int bit_len, int start,
159 int size);
160static int mmc_highest_voltage(uint32_t ocr);
161static void mmc_idle_cards(struct mmc_softc *sc);
162static void mmc_ms_delay(int ms);
163static void mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard);
164static void mmc_power_down(struct mmc_softc *sc);
165static void mmc_power_up(struct mmc_softc *sc);
166static void mmc_rescan_cards(struct mmc_softc *sc);
167static void mmc_scan(struct mmc_softc *sc);
168static int mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp,
169 uint8_t value, uint8_t *res);
170static int mmc_select_card(struct mmc_softc *sc, uint16_t rca);
171static uint32_t mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr);
172static int mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr,
173 uint32_t *rocr);
174static int mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd);
175static int mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd);
176static int mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs);
177static int mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr,
178 uint32_t *rocr);
179static int mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp);
180static int mmc_send_status(struct mmc_softc *sc, uint16_t rca,
181 uint32_t *status);
182static int mmc_set_blocklen(struct mmc_softc *sc, uint32_t len);
183static int mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca,
184 int width);
185static int mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp);
186static int mmc_set_timing(struct mmc_softc *sc, int timing);
187static int mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index,
188 uint8_t value);
189static int mmc_test_bus_width(struct mmc_softc *sc);
190static int mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca,
191 struct mmc_command *cmd, int retries);
192static int mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd,
193 int retries);
194static int mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
195 uint32_t arg, uint32_t flags, uint32_t *resp, int retries);
196static int mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req);
197static void mmc_wakeup(struct mmc_request *req);
198
199static void
200mmc_ms_delay(int ms)
201{
202
203 DELAY(1000 * ms); /* XXX BAD */
204}
205
206static int
207mmc_probe(device_t dev)
208{
209
210 device_set_desc(dev, "MMC/SD bus");
211 return (0);
212}
213
214static int
215mmc_attach(device_t dev)
216{
217 struct mmc_softc *sc;
218
219 sc = device_get_softc(dev);
220 sc->dev = dev;
221 MMC_LOCK_INIT(sc);
222
223 /* We'll probe and attach our children later, but before / mount */
224 sc->config_intrhook.ich_func = mmc_delayed_attach;
225 sc->config_intrhook.ich_arg = sc;
226 if (config_intrhook_establish(&sc->config_intrhook) != 0)
227 device_printf(dev, "config_intrhook_establish failed\n");
228 return (0);
229}
230
231static int
232mmc_detach(device_t dev)
233{
234 struct mmc_softc *sc = device_get_softc(dev);
235 int err;
236
237 if ((err = mmc_delete_cards(sc)) != 0)
238 return (err);
239 mmc_power_down(sc);
240 MMC_LOCK_DESTROY(sc);
241
242 return (0);
243}
244
245static int
246mmc_suspend(device_t dev)
247{
248 struct mmc_softc *sc = device_get_softc(dev);
249 int err;
250
251 err = bus_generic_suspend(dev);
252 if (err)
253 return (err);
254 mmc_power_down(sc);
255 return (0);
256}
257
258static int
259mmc_resume(device_t dev)
260{
261 struct mmc_softc *sc = device_get_softc(dev);
262
263 mmc_scan(sc);
264 return (bus_generic_resume(dev));
265}
266
267static int
268mmc_acquire_bus(device_t busdev, device_t dev)
269{
270 struct mmc_softc *sc;
271 struct mmc_ivars *ivar;
272 int err;
273 int rca;
274
275 err = MMCBR_ACQUIRE_HOST(device_get_parent(busdev), busdev);
276 if (err)
277 return (err);
278 sc = device_get_softc(busdev);
279 MMC_LOCK(sc);
280 if (sc->owner)
281 panic("mmc: host bridge didn't serialize us.");
282 sc->owner = dev;
283 MMC_UNLOCK(sc);
284
285 if (busdev != dev) {
286 /*
287 * Keep track of the last rca that we've selected. If
288 * we're asked to do it again, don't. We never
289 * unselect unless the bus code itself wants the mmc
290 * bus, and constantly reselecting causes problems.
291 */
292 rca = mmc_get_rca(dev);
293 if (sc->last_rca != rca) {
294 mmc_select_card(sc, rca);
295 sc->last_rca = rca;
296 /* Prepare bus width for the new card. */
297 ivar = device_get_ivars(dev);
298 if (bootverbose || mmc_debug) {
299 device_printf(busdev,
300 "setting bus width to %d bits\n",
301 (ivar->bus_width == bus_width_4) ? 4 :
302 (ivar->bus_width == bus_width_8) ? 8 : 1);
303 }
304 mmc_set_card_bus_width(sc, rca, ivar->bus_width);
305 mmcbr_set_bus_width(busdev, ivar->bus_width);
306 mmcbr_update_ios(busdev);
307 }
308 } else {
309 /*
310 * If there's a card selected, stand down.
311 */
312 if (sc->last_rca != 0) {
313 mmc_select_card(sc, 0);
314 sc->last_rca = 0;
315 }
316 }
317
318 return (0);
319}
320
321static int
322mmc_release_bus(device_t busdev, device_t dev)
323{
324 struct mmc_softc *sc;
325 int err;
326
327 sc = device_get_softc(busdev);
328
329 MMC_LOCK(sc);
330 if (!sc->owner)
331 panic("mmc: releasing unowned bus.");
332 if (sc->owner != dev)
333 panic("mmc: you don't own the bus. game over.");
334 MMC_UNLOCK(sc);
335 err = MMCBR_RELEASE_HOST(device_get_parent(busdev), busdev);
336 if (err)
337 return (err);
338 MMC_LOCK(sc);
339 sc->owner = NULL;
340 MMC_UNLOCK(sc);
341 return (0);
342}
343
344static uint32_t
345mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr)
346{
347
348 return (ocr & MMC_OCR_VOLTAGE);
349}
350
351static int
352mmc_highest_voltage(uint32_t ocr)
353{
354 int i;
355
356 for (i = 30; i >= 0; i--)
357 if (ocr & (1 << i))
358 return (i);
359 return (-1);
360}
361
362static void
363mmc_wakeup(struct mmc_request *req)
364{
365 struct mmc_softc *sc;
366
367 sc = (struct mmc_softc *)req->done_data;
368 MMC_LOCK(sc);
369 req->flags |= MMC_REQ_DONE;
370 MMC_UNLOCK(sc);
371 wakeup(req);
372}
373
374static int
375mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req)
376{
377
378 req->done = mmc_wakeup;
379 req->done_data = sc;
380 if (mmc_debug > 1) {
381 device_printf(sc->dev, "REQUEST: CMD%d arg %#x flags %#x",
382 req->cmd->opcode, req->cmd->arg, req->cmd->flags);
383 if (req->cmd->data) {
384 printf(" data %d\n", (int)req->cmd->data->len);
385 } else
386 printf("\n");
387 }
388 MMCBR_REQUEST(device_get_parent(sc->dev), sc->dev, req);
389 MMC_LOCK(sc);
390 while ((req->flags & MMC_REQ_DONE) == 0)
391 msleep(req, &sc->sc_mtx, 0, "mmcreq", 0);
392 MMC_UNLOCK(sc);
393 if (mmc_debug > 2 || (mmc_debug > 1 && req->cmd->error))
394 device_printf(sc->dev, "RESULT: %d\n", req->cmd->error);
395 return (0);
396}
397
398static int
399mmc_wait_for_request(device_t brdev, device_t reqdev, struct mmc_request *req)
400{
401 struct mmc_softc *sc = device_get_softc(brdev);
402
403 return (mmc_wait_for_req(sc, req));
404}
405
406static int
407mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd, int retries)
408{
409 struct mmc_request mreq;
410
411 memset(&mreq, 0, sizeof(mreq));
412 memset(cmd->resp, 0, sizeof(cmd->resp));
413 cmd->retries = retries;
414 mreq.cmd = cmd;
415 mmc_wait_for_req(sc, &mreq);
416 return (cmd->error);
417}
418
419static int
420mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca,
421 struct mmc_command *cmd, int retries)
422{
423 struct mmc_command appcmd;
424 int err = MMC_ERR_NONE, i;
425
426 for (i = 0; i <= retries; i++) {
427 appcmd.opcode = MMC_APP_CMD;
428 appcmd.arg = rca << 16;
429 appcmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
430 appcmd.data = NULL;
431 mmc_wait_for_cmd(sc, &appcmd, 0);
432 err = appcmd.error;
433 if (err != MMC_ERR_NONE)
434 continue;
435 if (!(appcmd.resp[0] & R1_APP_CMD))
436 return MMC_ERR_FAILED;
437 mmc_wait_for_cmd(sc, cmd, 0);
438 err = cmd->error;
439 if (err == MMC_ERR_NONE)
440 break;
441 }
442 return (err);
443}
444
445static int
446mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
447 uint32_t arg, uint32_t flags, uint32_t *resp, int retries)
448{
449 struct mmc_command cmd;
450 int err;
451
452 memset(&cmd, 0, sizeof(cmd));
453 cmd.opcode = opcode;
454 cmd.arg = arg;
455 cmd.flags = flags;
456 cmd.data = NULL;
457 err = mmc_wait_for_cmd(sc, &cmd, retries);
458 if (err)
459 return (err);
460 if (cmd.error)
461 return (cmd.error);
462 if (resp) {
463 if (flags & MMC_RSP_136)
464 memcpy(resp, cmd.resp, 4 * sizeof(uint32_t));
465 else
466 *resp = cmd.resp[0];
467 }
468 return (0);
469}
470
471static void
472mmc_idle_cards(struct mmc_softc *sc)
473{
474 device_t dev;
475 struct mmc_command cmd;
476
477 dev = sc->dev;
478 mmcbr_set_chip_select(dev, cs_high);
479 mmcbr_update_ios(dev);
480 mmc_ms_delay(1);
481
482 memset(&cmd, 0, sizeof(cmd));
483 cmd.opcode = MMC_GO_IDLE_STATE;
484 cmd.arg = 0;
485 cmd.flags = MMC_RSP_NONE | MMC_CMD_BC;
486 cmd.data = NULL;
487 mmc_wait_for_cmd(sc, &cmd, 0);
488 mmc_ms_delay(1);
489
490 mmcbr_set_chip_select(dev, cs_dontcare);
491 mmcbr_update_ios(dev);
492 mmc_ms_delay(1);
493}
494
495static int
496mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
497{
498 struct mmc_command cmd;
499 int err = MMC_ERR_NONE, i;
500
501 memset(&cmd, 0, sizeof(cmd));
502 cmd.opcode = ACMD_SD_SEND_OP_COND;
503 cmd.arg = ocr;
504 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
505 cmd.data = NULL;
506
507 for (i = 0; i < 1000; i++) {
508 err = mmc_wait_for_app_cmd(sc, 0, &cmd, CMD_RETRIES);
509 if (err != MMC_ERR_NONE)
510 break;
511 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
512 (ocr & MMC_OCR_VOLTAGE) == 0)
513 break;
514 err = MMC_ERR_TIMEOUT;
515 mmc_ms_delay(10);
516 }
517 if (rocr && err == MMC_ERR_NONE)
518 *rocr = cmd.resp[0];
519 return (err);
520}
521
522static int
523mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
524{
525 struct mmc_command cmd;
526 int err = MMC_ERR_NONE, i;
527
528 memset(&cmd, 0, sizeof(cmd));
529 cmd.opcode = MMC_SEND_OP_COND;
530 cmd.arg = ocr;
531 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
532 cmd.data = NULL;
533
534 for (i = 0; i < 1000; i++) {
535 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
536 if (err != MMC_ERR_NONE)
537 break;
538 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
539 (ocr & MMC_OCR_VOLTAGE) == 0)
540 break;
541 err = MMC_ERR_TIMEOUT;
542 mmc_ms_delay(10);
543 }
544 if (rocr && err == MMC_ERR_NONE)
545 *rocr = cmd.resp[0];
546 return (err);
547}
548
549static int
550mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs)
551{
552 struct mmc_command cmd;
553 int err;
554
555 memset(&cmd, 0, sizeof(cmd));
556 cmd.opcode = SD_SEND_IF_COND;
557 cmd.arg = (vhs << 8) + 0xAA;
558 cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR;
559 cmd.data = NULL;
560
561 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
562 return (err);
563}
564
565static void
566mmc_power_up(struct mmc_softc *sc)
567{
568 device_t dev;
569
570 dev = sc->dev;
571 mmcbr_set_vdd(dev, mmc_highest_voltage(mmcbr_get_host_ocr(dev)));
572 mmcbr_set_bus_mode(dev, opendrain);
573 mmcbr_set_chip_select(dev, cs_dontcare);
574 mmcbr_set_bus_width(dev, bus_width_1);
575 mmcbr_set_power_mode(dev, power_up);
576 mmcbr_set_clock(dev, 0);
577 mmcbr_update_ios(dev);
578 mmc_ms_delay(1);
579
580 mmcbr_set_clock(dev, mmcbr_get_f_min(sc->dev));
581 mmcbr_set_timing(dev, bus_timing_normal);
582 mmcbr_set_power_mode(dev, power_on);
583 mmcbr_update_ios(dev);
584 mmc_ms_delay(2);
585}
586
587static void
588mmc_power_down(struct mmc_softc *sc)
589{
590 device_t dev = sc->dev;
591
592 mmcbr_set_bus_mode(dev, opendrain);
593 mmcbr_set_chip_select(dev, cs_dontcare);
594 mmcbr_set_bus_width(dev, bus_width_1);
595 mmcbr_set_power_mode(dev, power_off);
596 mmcbr_set_clock(dev, 0);
597 mmcbr_set_timing(dev, bus_timing_normal);
598 mmcbr_update_ios(dev);
599}
600
601static int
602mmc_select_card(struct mmc_softc *sc, uint16_t rca)
603{
604 int flags;
605
606 flags = (rca ? MMC_RSP_R1B : MMC_RSP_NONE) | MMC_CMD_AC;
607 return (mmc_wait_for_command(sc, MMC_SELECT_CARD, (uint32_t)rca << 16,
608 flags, NULL, CMD_RETRIES));
609}
610
611static int
612mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index, uint8_t value)
613{
614 struct mmc_command cmd;
615 int err;
616
617 cmd.opcode = MMC_SWITCH_FUNC;
618 cmd.arg = (MMC_SWITCH_FUNC_WR << 24) |
619 (index << 16) |
620 (value << 8) |
621 set;
622 cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
623 cmd.data = NULL;
624 err = mmc_wait_for_cmd(sc, &cmd, 0);
625 return (err);
626}
627
628static int
629mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp, uint8_t value,
630 uint8_t *res)
631{
632 int err;
633 struct mmc_command cmd;
634 struct mmc_data data;
635
636 memset(&cmd, 0, sizeof(struct mmc_command));
637 memset(&data, 0, sizeof(struct mmc_data));
638 memset(res, 0, 64);
639
640 cmd.opcode = SD_SWITCH_FUNC;
641 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
642 cmd.arg = mode << 31; /* 0 - check, 1 - set */
643 cmd.arg |= 0x00FFFFFF;
644 cmd.arg &= ~(0xF << (grp * 4));
645 cmd.arg |= value << (grp * 4);
646 cmd.data = &data;
647
648 data.data = res;
649 data.len = 64;
650 data.flags = MMC_DATA_READ;
651
652 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
653 return (err);
654}
655
656static int
657mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, int width)
658{
659 struct mmc_command cmd;
660 int err;
661 uint8_t value;
662
663 if (mmcbr_get_mode(sc->dev) == mode_sd) {
664 memset(&cmd, 0, sizeof(struct mmc_command));
665 cmd.opcode = ACMD_SET_CLR_CARD_DETECT;
666 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
667 cmd.arg = SD_CLR_CARD_DETECT;
668 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
669 if (err != 0)
670 return (err);
671 memset(&cmd, 0, sizeof(struct mmc_command));
672 cmd.opcode = ACMD_SET_BUS_WIDTH;
673 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
674 switch (width) {
675 case bus_width_1:
676 cmd.arg = SD_BUS_WIDTH_1;
677 break;
678 case bus_width_4:
679 cmd.arg = SD_BUS_WIDTH_4;
680 break;
681 default:
682 return (MMC_ERR_INVALID);
683 }
684 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
685 } else {
686 switch (width) {
687 case bus_width_1:
688 value = EXT_CSD_BUS_WIDTH_1;
689 break;
690 case bus_width_4:
691 value = EXT_CSD_BUS_WIDTH_4;
692 break;
693 case bus_width_8:
694 value = EXT_CSD_BUS_WIDTH_8;
695 break;
696 default:
697 return (MMC_ERR_INVALID);
698 }
699 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
700 value);
701 }
702 return (err);
703}
704
705static int
706mmc_set_timing(struct mmc_softc *sc, int timing)
707{
708 int err;
709 uint8_t value;
710 u_char switch_res[64];
711
712 switch (timing) {
713 case bus_timing_normal:
714 value = 0;
715 break;
716 case bus_timing_hs:
717 value = 1;
718 break;
719 default:
720 return (MMC_ERR_INVALID);
721 }
722 if (mmcbr_get_mode(sc->dev) == mode_sd)
723 err = mmc_sd_switch(sc, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1,
724 value, switch_res);
725 else
726 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL,
727 EXT_CSD_HS_TIMING, value);
728 return (err);
729}
730
731static int
732mmc_test_bus_width(struct mmc_softc *sc)
733{
734 struct mmc_command cmd;
735 struct mmc_data data;
736 int err;
737 uint8_t buf[8];
738 uint8_t p8[8] = { 0x55, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
739 uint8_t p8ok[8] = { 0xAA, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
740 uint8_t p4[4] = { 0x5A, 0x00, 0x00, 0x00, };
741 uint8_t p4ok[4] = { 0xA5, 0x00, 0x00, 0x00, };
742
743 if (mmcbr_get_caps(sc->dev) & MMC_CAP_8_BIT_DATA) {
744 mmcbr_set_bus_width(sc->dev, bus_width_8);
745 mmcbr_update_ios(sc->dev);
746
747 cmd.opcode = MMC_BUSTEST_W;
748 cmd.arg = 0;
749 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
750 cmd.data = &data;
751
752 data.data = p8;
753 data.len = 8;
754 data.flags = MMC_DATA_WRITE;
755 mmc_wait_for_cmd(sc, &cmd, 0);
756
757 cmd.opcode = MMC_BUSTEST_R;
758 cmd.arg = 0;
759 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
760 cmd.data = &data;
761
762 data.data = buf;
763 data.len = 8;
764 data.flags = MMC_DATA_READ;
765 err = mmc_wait_for_cmd(sc, &cmd, 0);
766
767 mmcbr_set_bus_width(sc->dev, bus_width_1);
768 mmcbr_update_ios(sc->dev);
769
770 if (err == MMC_ERR_NONE && memcmp(buf, p8ok, 8) == 0)
771 return (bus_width_8);
772 }
773
774 if (mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) {
775 mmcbr_set_bus_width(sc->dev, bus_width_4);
776 mmcbr_update_ios(sc->dev);
777
778 cmd.opcode = MMC_BUSTEST_W;
779 cmd.arg = 0;
780 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
781 cmd.data = &data;
782
783 data.data = p4;
784 data.len = 4;
785 data.flags = MMC_DATA_WRITE;
786 mmc_wait_for_cmd(sc, &cmd, 0);
787
788 cmd.opcode = MMC_BUSTEST_R;
789 cmd.arg = 0;
790 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
791 cmd.data = &data;
792
793 data.data = buf;
794 data.len = 4;
795 data.flags = MMC_DATA_READ;
796 err = mmc_wait_for_cmd(sc, &cmd, 0);
797
798 mmcbr_set_bus_width(sc->dev, bus_width_1);
799 mmcbr_update_ios(sc->dev);
800
801 if (err == MMC_ERR_NONE && memcmp(buf, p4ok, 4) == 0)
802 return (bus_width_4);
803 }
804 return (bus_width_1);
805}
806
807static uint32_t
808mmc_get_bits(uint32_t *bits, int bit_len, int start, int size)
809{
810 const int i = (bit_len / 32) - (start / 32) - 1;
811 const int shift = start & 31;
812 uint32_t retval = bits[i] >> shift;
813 if (size + shift > 32)
814 retval |= bits[i - 1] << (32 - shift);
815 return (retval & ((1llu << size) - 1));
816}
817
818static void
819mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid)
820{
821 int i;
822
823 /* There's no version info, so we take it on faith */
824 memset(cid, 0, sizeof(*cid));
825 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
826 cid->oid = mmc_get_bits(raw_cid, 128, 104, 16);
827 for (i = 0; i < 5; i++)
828 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
829 cid->pnm[5] = 0;
830 cid->prv = mmc_get_bits(raw_cid, 128, 56, 8);
831 cid->psn = mmc_get_bits(raw_cid, 128, 24, 32);
832 cid->mdt_year = mmc_get_bits(raw_cid, 128, 12, 8) + 2000;
833 cid->mdt_month = mmc_get_bits(raw_cid, 128, 8, 4);
834}
835
836static void
837mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid)
838{
839 int i;
840
841 /* There's no version info, so we take it on faith */
842 memset(cid, 0, sizeof(*cid));
843 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
844 cid->oid = mmc_get_bits(raw_cid, 128, 104, 8);
845 for (i = 0; i < 6; i++)
846 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
847 cid->pnm[6] = 0;
848 cid->prv = mmc_get_bits(raw_cid, 128, 48, 8);
849 cid->psn = mmc_get_bits(raw_cid, 128, 16, 32);
850 cid->mdt_month = mmc_get_bits(raw_cid, 128, 12, 4);
851 cid->mdt_year = mmc_get_bits(raw_cid, 128, 8, 4) + 1997;
852}
853
854static void
855mmc_format_card_id_string(struct mmc_ivars *ivar)
856{
857 char oidstr[8];
858 uint8_t c1;
859 uint8_t c2;
860
861 /*
862 * Format a card ID string for use by the mmcsd driver, it's what
863 * appears between the <> in the following:
864 * mmcsd0: 968MB <SD SD01G 8.0 SN 2686905 Mfg 08/2008 by 3 TN> at mmc0
865 * 22.5MHz/4bit/128-block
866 *
867 * The card_id_string in mmc_ivars is currently allocated as 64 bytes,
868 * and our max formatted length is currently 55 bytes if every field
869 * contains the largest value.
870 *
871 * Sometimes the oid is two printable ascii chars; when it's not,
872 * format it as 0xnnnn instead.
873 */
874 c1 = (ivar->cid.oid >> 8) & 0x0ff;
875 c2 = ivar->cid.oid & 0x0ff;
876 if (c1 > 0x1f && c1 < 0x7f && c2 > 0x1f && c2 < 0x7f)
877 snprintf(oidstr, sizeof(oidstr), "%c%c", c1, c2);
878 else
879 snprintf(oidstr, sizeof(oidstr), "0x%04x", ivar->cid.oid);
880 snprintf(ivar->card_id_string, sizeof(ivar->card_id_string),
881 "%s%s %s %d.%d SN %d MFG %02d/%04d by %d %s",
882 ivar->mode == mode_sd ? "SD" : "MMC", ivar->high_cap ? "HC" : "",
883 ivar->cid.pnm, ivar->cid.prv >> 4, ivar->cid.prv & 0x0f,
884 ivar->cid.psn, ivar->cid.mdt_month, ivar->cid.mdt_year,
885 ivar->cid.mid, oidstr);
886}
887
888static const int exp[8] = {
889 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
890};
891
892static const int mant[16] = {
893 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80
894};
895
896static const int cur_min[8] = {
897 500, 1000, 5000, 10000, 25000, 35000, 60000, 100000
898};
899
900static const int cur_max[8] = {
901 1000, 5000, 10000, 25000, 35000, 45000, 800000, 200000
902};
903
904static void
905mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd)
906{
907 int v;
908 int m;
909 int e;
910
911 memset(csd, 0, sizeof(*csd));
912 csd->csd_structure = v = mmc_get_bits(raw_csd, 128, 126, 2);
913 if (v == 0) {
914 m = mmc_get_bits(raw_csd, 128, 115, 4);
915 e = mmc_get_bits(raw_csd, 128, 112, 3);
916 csd->tacc = (exp[e] * mant[m] + 9) / 10;
917 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
918 m = mmc_get_bits(raw_csd, 128, 99, 4);
919 e = mmc_get_bits(raw_csd, 128, 96, 3);
920 csd->tran_speed = exp[e] * 10000 * mant[m];
921 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
922 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
923 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
924 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
925 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
926 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
927 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
928 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
929 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
930 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
931 m = mmc_get_bits(raw_csd, 128, 62, 12);
932 e = mmc_get_bits(raw_csd, 128, 47, 3);
933 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
934 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
935 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
936 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
937 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
938 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
939 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
940 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
941 } else if (v == 1) {
942 m = mmc_get_bits(raw_csd, 128, 115, 4);
943 e = mmc_get_bits(raw_csd, 128, 112, 3);
944 csd->tacc = (exp[e] * mant[m] + 9) / 10;
945 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
946 m = mmc_get_bits(raw_csd, 128, 99, 4);
947 e = mmc_get_bits(raw_csd, 128, 96, 3);
948 csd->tran_speed = exp[e] * 10000 * mant[m];
949 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
950 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
951 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
952 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
953 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
954 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
955 csd->capacity = ((uint64_t)mmc_get_bits(raw_csd, 128, 48, 22) + 1) *
956 512 * 1024;
957 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
958 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
959 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
960 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
961 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
962 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
963 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
964 } else
965 panic("unknown SD CSD version");
966}
967
968static void
969mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd)
970{
971 int m;
972 int e;
973
974 memset(csd, 0, sizeof(*csd));
975 csd->csd_structure = mmc_get_bits(raw_csd, 128, 126, 2);
976 csd->spec_vers = mmc_get_bits(raw_csd, 128, 122, 4);
977 m = mmc_get_bits(raw_csd, 128, 115, 4);
978 e = mmc_get_bits(raw_csd, 128, 112, 3);
979 csd->tacc = exp[e] * mant[m] + 9 / 10;
980 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
981 m = mmc_get_bits(raw_csd, 128, 99, 4);
982 e = mmc_get_bits(raw_csd, 128, 96, 3);
983 csd->tran_speed = exp[e] * 10000 * mant[m];
984 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
985 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
986 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
987 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
988 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
989 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
990 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
991 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
992 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
993 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
994 m = mmc_get_bits(raw_csd, 128, 62, 12);
995 e = mmc_get_bits(raw_csd, 128, 47, 3);
996 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
997 csd->erase_blk_en = 0;
998 csd->erase_sector = (mmc_get_bits(raw_csd, 128, 42, 5) + 1) *
999 (mmc_get_bits(raw_csd, 128, 37, 5) + 1);
1000 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 5);
1001 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
1002 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
1003 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
1004 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
1005}
1006
1007static void
1008mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr)
1009{
1010 unsigned int scr_struct;
1011
1012 memset(scr, 0, sizeof(*scr));
1013
1014 scr_struct = mmc_get_bits(raw_scr, 64, 60, 4);
1015 if (scr_struct != 0) {
1016 printf("Unrecognised SCR structure version %d\n",
1017 scr_struct);
1018 return;
1019 }
1020 scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4);
1021 scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4);
1022}
1023
1024static void
1025mmc_app_decode_sd_status(uint32_t *raw_sd_status,
1026 struct mmc_sd_status *sd_status)
1027{
1028
1029 memset(sd_status, 0, sizeof(*sd_status));
1030
1031 sd_status->bus_width = mmc_get_bits(raw_sd_status, 512, 510, 2);
1032 sd_status->secured_mode = mmc_get_bits(raw_sd_status, 512, 509, 1);
1033 sd_status->card_type = mmc_get_bits(raw_sd_status, 512, 480, 16);
1034 sd_status->prot_area = mmc_get_bits(raw_sd_status, 512, 448, 12);
1035 sd_status->speed_class = mmc_get_bits(raw_sd_status, 512, 440, 8);
1036 sd_status->perf_move = mmc_get_bits(raw_sd_status, 512, 432, 8);
1037 sd_status->au_size = mmc_get_bits(raw_sd_status, 512, 428, 4);
1038 sd_status->erase_size = mmc_get_bits(raw_sd_status, 512, 408, 16);
1039 sd_status->erase_timeout = mmc_get_bits(raw_sd_status, 512, 402, 6);
1040 sd_status->erase_offset = mmc_get_bits(raw_sd_status, 512, 400, 2);
1041}
1042
1043static int
1044mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid)
1045{
1046 struct mmc_command cmd;
1047 int err;
1048
1049 cmd.opcode = MMC_ALL_SEND_CID;
1050 cmd.arg = 0;
1051 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
1052 cmd.data = NULL;
1053 err = mmc_wait_for_cmd(sc, &cmd, 0);
1054 memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t));
1055 return (err);
1056}
1057
1058static int
1059mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd)
1060{
1061 struct mmc_command cmd;
1062 int err;
1063
1064 cmd.opcode = MMC_SEND_CSD;
1065 cmd.arg = rca << 16;
1066 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
1067 cmd.data = NULL;
1068 err = mmc_wait_for_cmd(sc, &cmd, 0);
1069 memcpy(rawcsd, cmd.resp, 4 * sizeof(uint32_t));
1070 return (err);
1071}
1072
1073static int
1074mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr)
1075{
1076 int err;
1077 struct mmc_command cmd;
1078 struct mmc_data data;
1079
1080 memset(&cmd, 0, sizeof(struct mmc_command));
1081 memset(&data, 0, sizeof(struct mmc_data));
1082
1083 memset(rawscr, 0, 8);
1084 cmd.opcode = ACMD_SEND_SCR;
1085 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1086 cmd.arg = 0;
1087 cmd.data = &data;
1088
1089 data.data = rawscr;
1090 data.len = 8;
1091 data.flags = MMC_DATA_READ;
1092
1093 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
1094 rawscr[0] = be32toh(rawscr[0]);
1095 rawscr[1] = be32toh(rawscr[1]);
1096 return (err);
1097}
1098
1099static int
1100mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd)
1101{
1102 int err;
1103 struct mmc_command cmd;
1104 struct mmc_data data;
1105
1106 memset(&cmd, 0, sizeof(struct mmc_command));
1107 memset(&data, 0, sizeof(struct mmc_data));
1108
1109 memset(rawextcsd, 0, 512);
1110 cmd.opcode = MMC_SEND_EXT_CSD;
1111 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1112 cmd.arg = 0;
1113 cmd.data = &data;
1114
1115 data.data = rawextcsd;
1116 data.len = 512;
1117 data.flags = MMC_DATA_READ;
1118
1119 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1120 return (err);
1121}
1122
1123static int
1124mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, uint32_t *rawsdstatus)
1125{
1126 int err, i;
1127 struct mmc_command cmd;
1128 struct mmc_data data;
1129
1130 memset(&cmd, 0, sizeof(struct mmc_command));
1131 memset(&data, 0, sizeof(struct mmc_data));
1132
1133 memset(rawsdstatus, 0, 64);
1134 cmd.opcode = ACMD_SD_STATUS;
1135 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1136 cmd.arg = 0;
1137 cmd.data = &data;
1138
1139 data.data = rawsdstatus;
1140 data.len = 64;
1141 data.flags = MMC_DATA_READ;
1142
1143 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
1144 for (i = 0; i < 16; i++)
1145 rawsdstatus[i] = be32toh(rawsdstatus[i]);
1146 return (err);
1147}
1148
1149static int
1150mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp)
1151{
1152 struct mmc_command cmd;
1153 int err;
1154
1155 cmd.opcode = MMC_SET_RELATIVE_ADDR;
1156 cmd.arg = resp << 16;
1157 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
1158 cmd.data = NULL;
1159 err = mmc_wait_for_cmd(sc, &cmd, 0);
1160 return (err);
1161}
1162
1163static int
1164mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp)
1165{
1166 struct mmc_command cmd;
1167 int err;
1168
1169 cmd.opcode = SD_SEND_RELATIVE_ADDR;
1170 cmd.arg = 0;
1171 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
1172 cmd.data = NULL;
1173 err = mmc_wait_for_cmd(sc, &cmd, 0);
1174 *resp = cmd.resp[0];
1175 return (err);
1176}
1177
1178static int
1179mmc_send_status(struct mmc_softc *sc, uint16_t rca, uint32_t *status)
1180{
1181 struct mmc_command cmd;
1182 int err;
1183
1184 cmd.opcode = MMC_SEND_STATUS;
1185 cmd.arg = rca << 16;
1186 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
1187 cmd.data = NULL;
1188 err = mmc_wait_for_cmd(sc, &cmd, 0);
1189 *status = cmd.resp[0];
1190 return (err);
1191}
1192
1193static int
1194mmc_set_blocklen(struct mmc_softc *sc, uint32_t len)
1195{
1196 struct mmc_command cmd;
1197 int err;
1198
1199 cmd.opcode = MMC_SET_BLOCKLEN;
1200 cmd.arg = len;
1201 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
1202 cmd.data = NULL;
1203 err = mmc_wait_for_cmd(sc, &cmd, 0);
1204 return (err);
1205}
1206
1207static void
1208mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard)
1209{
1210 device_printf(dev, "Card at relative address %d%s:\n",
1211 ivar->rca, newcard ? " added" : "");
1212 device_printf(dev, " card: %s\n", ivar->card_id_string);
1213 device_printf(dev, " bus: %ubit, %uMHz%s\n",
1214 (ivar->bus_width == bus_width_1 ? 1 :
1215 (ivar->bus_width == bus_width_4 ? 4 : 8)),
1216 (ivar->timing == bus_timing_hs ?
1217 ivar->hs_tran_speed : ivar->tran_speed) / 1000000,
1218 ivar->timing == bus_timing_hs ? ", high speed timing" : "");
1219 device_printf(dev, " memory: %u blocks, erase sector %u blocks%s\n",
1220 ivar->sec_count, ivar->erase_sector,
1221 ivar->read_only ? ", read-only" : "");
1222}
1223
1224static void
1225mmc_discover_cards(struct mmc_softc *sc)
1226{
1227 struct mmc_ivars *ivar = NULL;
1228 device_t *devlist;
1229 int err, i, devcount, newcard;
1230 uint32_t raw_cid[4], resp, sec_count, status;
1231 device_t child;
1232 uint16_t rca = 2;
1233 u_char switch_res[64];
1234
1235 if (bootverbose || mmc_debug)
1236 device_printf(sc->dev, "Probing cards\n");
1237 while (1) {
1238 err = mmc_all_send_cid(sc, raw_cid);
1239 if (err == MMC_ERR_TIMEOUT)
1240 break;
1241 if (err != MMC_ERR_NONE) {
1242 device_printf(sc->dev, "Error reading CID %d\n", err);
1243 break;
1244 }
1245 newcard = 1;
1246 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
1247 return;
1248 for (i = 0; i < devcount; i++) {
1249 ivar = device_get_ivars(devlist[i]);
1250 if (memcmp(ivar->raw_cid, raw_cid, sizeof(raw_cid)) == 0) {
1251 newcard = 0;
1252 break;
1253 }
1254 }
1255 free(devlist, M_TEMP);
1256 if (bootverbose || mmc_debug) {
1257 device_printf(sc->dev, "%sard detected (CID %08x%08x%08x%08x)\n",
1258 newcard ? "New c" : "C",
1259 raw_cid[0], raw_cid[1], raw_cid[2], raw_cid[3]);
1260 }
1261 if (newcard) {
1262 ivar = malloc(sizeof(struct mmc_ivars), M_DEVBUF,
1263 M_WAITOK | M_ZERO);
1264 memcpy(ivar->raw_cid, raw_cid, sizeof(raw_cid));
1265 }
1266 if (mmcbr_get_ro(sc->dev))
1267 ivar->read_only = 1;
1268 ivar->bus_width = bus_width_1;
1269 ivar->timing = bus_timing_normal;
1270 ivar->mode = mmcbr_get_mode(sc->dev);
1271 if (ivar->mode == mode_sd) {
1272 mmc_decode_cid_sd(ivar->raw_cid, &ivar->cid);
1273 mmc_send_relative_addr(sc, &resp);
1274 ivar->rca = resp >> 16;
1275 /* Get card CSD. */
1276 mmc_send_csd(sc, ivar->rca, ivar->raw_csd);
1277 if (bootverbose || mmc_debug)
1278 device_printf(sc->dev,
1279 "%sard detected (CSD %08x%08x%08x%08x)\n",
1280 newcard ? "New c" : "C", ivar->raw_csd[0],
1281 ivar->raw_csd[1], ivar->raw_csd[2],
1282 ivar->raw_csd[3]);
1283 mmc_decode_csd_sd(ivar->raw_csd, &ivar->csd);
1284 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE;
1285 if (ivar->csd.csd_structure > 0)
1286 ivar->high_cap = 1;
1287 ivar->tran_speed = ivar->csd.tran_speed;
1288 ivar->erase_sector = ivar->csd.erase_sector *
1289 ivar->csd.write_bl_len / MMC_SECTOR_SIZE;
1290
1291 err = mmc_send_status(sc, ivar->rca, &status);
1292 if (err != MMC_ERR_NONE) {
1293 device_printf(sc->dev,
1294 "Error reading card status %d\n", err);
1295 break;
1296 }
1297 if ((status & R1_CARD_IS_LOCKED) != 0) {
1298 device_printf(sc->dev,
1299 "Card is password protected, skipping.\n");
1300 break;
1301 }
1302
1303 /* Get card SCR. Card must be selected to fetch it. */
1304 mmc_select_card(sc, ivar->rca);
1305 mmc_app_send_scr(sc, ivar->rca, ivar->raw_scr);
1306 mmc_app_decode_scr(ivar->raw_scr, &ivar->scr);
1307 /* Get card switch capabilities (command class 10). */
1308 if ((ivar->scr.sda_vsn >= 1) &&
1309 (ivar->csd.ccc & (1<<10))) {
1310 mmc_sd_switch(sc, SD_SWITCH_MODE_CHECK,
1311 SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE,
1312 switch_res);
1313 if (switch_res[13] & 2) {
1314 ivar->timing = bus_timing_hs;
1315 ivar->hs_tran_speed = SD_MAX_HS;
1316 }
1317 }
1318 mmc_app_sd_status(sc, ivar->rca, ivar->raw_sd_status);
1319 mmc_app_decode_sd_status(ivar->raw_sd_status,
1320 &ivar->sd_status);
1321 if (ivar->sd_status.au_size != 0) {
1322 ivar->erase_sector =
1323 16 << ivar->sd_status.au_size;
1324 }
1325 mmc_select_card(sc, 0);
1326 /* Find max supported bus width. */
1327 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) &&
1328 (ivar->scr.bus_widths & SD_SCR_BUS_WIDTH_4))
1329 ivar->bus_width = bus_width_4;
1330
1331 /*
1332 * Some cards that report maximum I/O block sizes
1333 * greater than 512 require the block length to be
1334 * set to 512, even though that is supposed to be
1335 * the default. Example:
1336 *
1337 * Transcend 2GB SDSC card, CID:
1338 * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000
1339 */
1340 if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE ||
1341 ivar->csd.write_bl_len != MMC_SECTOR_SIZE)
1342 mmc_set_blocklen(sc, MMC_SECTOR_SIZE);
1343
1344 mmc_format_card_id_string(ivar);
1345
1346 if (bootverbose || mmc_debug)
1347 mmc_log_card(sc->dev, ivar, newcard);
1348 if (newcard) {
1349 /* Add device. */
1350 child = device_add_child(sc->dev, NULL, -1);
1351 device_set_ivars(child, ivar);
1352 }
1353 return;
1354 }
1355 mmc_decode_cid_mmc(ivar->raw_cid, &ivar->cid);
1356 ivar->rca = rca++;
1357 mmc_set_relative_addr(sc, ivar->rca);
1358 /* Get card CSD. */
1359 mmc_send_csd(sc, ivar->rca, ivar->raw_csd);
1360 if (bootverbose || mmc_debug)
1361 device_printf(sc->dev,
1362 "%sard detected (CSD %08x%08x%08x%08x)\n",
1363 newcard ? "New c" : "C", ivar->raw_csd[0],
1364 ivar->raw_csd[1], ivar->raw_csd[2],
1365 ivar->raw_csd[3]);
1366
1367 mmc_decode_csd_mmc(ivar->raw_csd, &ivar->csd);
1368 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE;
1369 ivar->tran_speed = ivar->csd.tran_speed;
1370 ivar->erase_sector = ivar->csd.erase_sector *
1371 ivar->csd.write_bl_len / MMC_SECTOR_SIZE;
1372
1373 err = mmc_send_status(sc, ivar->rca, &status);
1374 if (err != MMC_ERR_NONE) {
1375 device_printf(sc->dev,
1376 "Error reading card status %d\n", err);
1377 break;
1378 }
1379 if ((status & R1_CARD_IS_LOCKED) != 0) {
1380 device_printf(sc->dev,
1381 "Card is password protected, skipping.\n");
1382 break;
1383 }
1384
1385 /* Only MMC >= 4.x cards support EXT_CSD. */
1386 if (ivar->csd.spec_vers >= 4) {
1387 /* Card must be selected to fetch EXT_CSD. */
1388 mmc_select_card(sc, ivar->rca);
1389 mmc_send_ext_csd(sc, ivar->raw_ext_csd);
1390 /* Handle extended capacity from EXT_CSD */
1391 sec_count = ivar->raw_ext_csd[EXT_CSD_SEC_CNT] +
1392 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) +
1393 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) +
1394 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1395 if (sec_count != 0) {
1396 ivar->sec_count = sec_count;
1397 ivar->high_cap = 1;
1398 }
1399 /* Get card speed in high speed mode. */
1400 ivar->timing = bus_timing_hs;
1401 if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE]
1402 & EXT_CSD_CARD_TYPE_52)
1403 ivar->hs_tran_speed = MMC_TYPE_52_MAX_HS;
1404 else if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE]
1405 & EXT_CSD_CARD_TYPE_26)
1406 ivar->hs_tran_speed = MMC_TYPE_26_MAX_HS;
1407 else
1408 ivar->hs_tran_speed = ivar->tran_speed;
1409 /* Find max supported bus width. */
1410 ivar->bus_width = mmc_test_bus_width(sc);
1411 mmc_select_card(sc, 0);
1412 /* Handle HC erase sector size. */
1413 if (ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE] != 0) {
1414 ivar->erase_sector = 1024 *
1415 ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE];
1416 mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL,
1417 EXT_CSD_ERASE_GRP_DEF, 1);
1418 }
1419 } else {
1420 ivar->bus_width = bus_width_1;
1421 ivar->timing = bus_timing_normal;
1422 }
1423
1424 /*
1425 * Some cards that report maximum I/O block sizes greater
1426 * than 512 require the block length to be set to 512, even
1427 * though that is supposed to be the default. Example:
1428 *
1429 * Transcend 2GB SDSC card, CID:
1430 * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000
1431 */
1432 if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE ||
1433 ivar->csd.write_bl_len != MMC_SECTOR_SIZE)
1434 mmc_set_blocklen(sc, MMC_SECTOR_SIZE);
1435
1436 mmc_format_card_id_string(ivar);
1437
1438 if (bootverbose || mmc_debug)
1439 mmc_log_card(sc->dev, ivar, newcard);
1440 if (newcard) {
1441 /* Add device. */
1442 child = device_add_child(sc->dev, NULL, -1);
1443 device_set_ivars(child, ivar);
1444 }
1445 }
1446}
1447
1448static void
1449mmc_rescan_cards(struct mmc_softc *sc)
1450{
1451 struct mmc_ivars *ivar = NULL;
1452 device_t *devlist;
1453 int err, i, devcount;
1454
1455 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
1456 return;
1457 for (i = 0; i < devcount; i++) {
1458 ivar = device_get_ivars(devlist[i]);
1459 if (mmc_select_card(sc, ivar->rca)) {
1460 if (bootverbose || mmc_debug)
1461 device_printf(sc->dev, "Card at relative address %d lost.\n",
1462 ivar->rca);
1463 device_delete_child(sc->dev, devlist[i]);
1464 free(ivar, M_DEVBUF);
1465 }
1466 }
1467 free(devlist, M_TEMP);
1468 mmc_select_card(sc, 0);
1469}
1470
1471static int
1472mmc_delete_cards(struct mmc_softc *sc)
1473{
1474 struct mmc_ivars *ivar;
1475 device_t *devlist;
1476 int err, i, devcount;
1477
1478 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
1479 return (err);
1480 for (i = 0; i < devcount; i++) {
1481 ivar = device_get_ivars(devlist[i]);
1482 if (bootverbose || mmc_debug)
1483 device_printf(sc->dev, "Card at relative address %d deleted.\n",
1484 ivar->rca);
1485 device_delete_child(sc->dev, devlist[i]);
1486 free(ivar, M_DEVBUF);
1487 }
1488 free(devlist, M_TEMP);
1489 return (0);
1490}
1491
1492static void
1493mmc_go_discovery(struct mmc_softc *sc)
1494{
1495 uint32_t ocr;
1496 device_t dev;
1497 int err;
1498
1499 dev = sc->dev;
1500 if (mmcbr_get_power_mode(dev) != power_on) {
1501 /*
1502 * First, try SD modes
1503 */
1504 mmcbr_set_mode(dev, mode_sd);
1505 mmc_power_up(sc);
1506 mmcbr_set_bus_mode(dev, pushpull);
1507 if (bootverbose || mmc_debug)
1508 device_printf(sc->dev, "Probing bus\n");
1509 mmc_idle_cards(sc);
1510 err = mmc_send_if_cond(sc, 1);
1511 if ((bootverbose || mmc_debug) && err == 0)
1512 device_printf(sc->dev, "SD 2.0 interface conditions: OK\n");
1513 if (mmc_send_app_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) {
1514 if (bootverbose || mmc_debug)
1515 device_printf(sc->dev, "SD probe: failed\n");
1516 /*
1517 * Failed, try MMC
1518 */
1519 mmcbr_set_mode(dev, mode_mmc);
1520 if (mmc_send_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) {
1521 if (bootverbose || mmc_debug)
1522 device_printf(sc->dev, "MMC probe: failed\n");
1523 ocr = 0; /* Failed both, powerdown. */
1524 } else if (bootverbose || mmc_debug)
1525 device_printf(sc->dev,
1526 "MMC probe: OK (OCR: 0x%08x)\n", ocr);
1527 } else if (bootverbose || mmc_debug)
1528 device_printf(sc->dev, "SD probe: OK (OCR: 0x%08x)\n", ocr);
1529
1530 mmcbr_set_ocr(dev, mmc_select_vdd(sc, ocr));
1531 if (mmcbr_get_ocr(dev) != 0)
1532 mmc_idle_cards(sc);
1533 } else {
1534 mmcbr_set_bus_mode(dev, opendrain);
1535 mmcbr_set_clock(dev, mmcbr_get_f_min(dev));
1536 mmcbr_update_ios(dev);
1537 /* XXX recompute vdd based on new cards? */
1538 }
1539 /*
1540 * Make sure that we have a mutually agreeable voltage to at least
1541 * one card on the bus.
1542 */
1543 if (bootverbose || mmc_debug)
1544 device_printf(sc->dev, "Current OCR: 0x%08x\n", mmcbr_get_ocr(dev));
1545 if (mmcbr_get_ocr(dev) == 0) {
1546 mmc_delete_cards(sc);
1547 mmc_power_down(sc);
1548 return;
1549 }
1550 /*
1551 * Reselect the cards after we've idled them above.
1552 */
1553 if (mmcbr_get_mode(dev) == mode_sd) {
1554 err = mmc_send_if_cond(sc, 1);
1555 mmc_send_app_op_cond(sc,
1556 (err ? 0 : MMC_OCR_CCS) | mmcbr_get_ocr(dev), NULL);
1557 } else
1558 mmc_send_op_cond(sc, mmcbr_get_ocr(dev), NULL);
1559 mmc_discover_cards(sc);
1560 mmc_rescan_cards(sc);
1561
1562 mmcbr_set_bus_mode(dev, pushpull);
1563 mmcbr_update_ios(dev);
1564 mmc_calculate_clock(sc);
1565 bus_generic_attach(dev);
1566/* mmc_update_children_sysctl(dev);*/
1567}
1568
1569static int
1570mmc_calculate_clock(struct mmc_softc *sc)
1571{
1572 int max_dtr, max_hs_dtr, max_timing;
1573 int nkid, i, f_min, f_max;
1574 device_t *kids;
1575 struct mmc_ivars *ivar;
1576
1577 f_min = mmcbr_get_f_min(sc->dev);
1578 f_max = mmcbr_get_f_max(sc->dev);
1579 max_dtr = max_hs_dtr = f_max;
1580 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_HSPEED))
1581 max_timing = bus_timing_hs;
1582 else
1583 max_timing = bus_timing_normal;
1584 if (device_get_children(sc->dev, &kids, &nkid) != 0)
1585 panic("can't get children");
1586 for (i = 0; i < nkid; i++) {
1587 ivar = device_get_ivars(kids[i]);
1588 if (ivar->timing < max_timing)
1589 max_timing = ivar->timing;
1590 if (ivar->tran_speed < max_dtr)
1591 max_dtr = ivar->tran_speed;
1592 if (ivar->hs_tran_speed < max_hs_dtr)
1593 max_hs_dtr = ivar->hs_tran_speed;
1594 }
1595 for (i = 0; i < nkid; i++) {
1596 ivar = device_get_ivars(kids[i]);
1597 if (ivar->timing == bus_timing_normal)
1598 continue;
1599 mmc_select_card(sc, ivar->rca);
1600 mmc_set_timing(sc, max_timing);
1601 }
1602 mmc_select_card(sc, 0);
1603 free(kids, M_TEMP);
1604 if (max_timing == bus_timing_hs)
1605 max_dtr = max_hs_dtr;
1606 if (bootverbose || mmc_debug) {
1607 device_printf(sc->dev,
1608 "setting transfer rate to %d.%03dMHz%s\n",
1609 max_dtr / 1000000, (max_dtr / 1000) % 1000,
1610 max_timing == bus_timing_hs ? " (high speed timing)" : "");
1611 }
1612 mmcbr_set_timing(sc->dev, max_timing);
1613 mmcbr_set_clock(sc->dev, max_dtr);
1614 mmcbr_update_ios(sc->dev);
1615 return max_dtr;
1616}
1617
1618static void
1619mmc_scan(struct mmc_softc *sc)
1620{
1621 device_t dev = sc->dev;
1622
1623 mmc_acquire_bus(dev, dev);
1624 mmc_go_discovery(sc);
1625 mmc_release_bus(dev, dev);
1626}
1627
1628static int
1629mmc_read_ivar(device_t bus, device_t child, int which, uintptr_t *result)
1630{
1631 struct mmc_ivars *ivar = device_get_ivars(child);
1632
1633 switch (which) {
1634 default:
1635 return (EINVAL);
1636 case MMC_IVAR_DSR_IMP:
1637 *result = ivar->csd.dsr_imp;
1638 break;
1639 case MMC_IVAR_MEDIA_SIZE:
1640 *result = ivar->sec_count;
1641 break;
1642 case MMC_IVAR_RCA:
1643 *result = ivar->rca;
1644 break;
1645 case MMC_IVAR_SECTOR_SIZE:
1646 *result = MMC_SECTOR_SIZE;
1647 break;
1648 case MMC_IVAR_TRAN_SPEED:
1649 *result = mmcbr_get_clock(bus);
1650 break;
1651 case MMC_IVAR_READ_ONLY:
1652 *result = ivar->read_only;
1653 break;
1654 case MMC_IVAR_HIGH_CAP:
1655 *result = ivar->high_cap;
1656 break;
1657 case MMC_IVAR_CARD_TYPE:
1658 *result = ivar->mode;
1659 break;
1660 case MMC_IVAR_BUS_WIDTH:
1661 *result = ivar->bus_width;
1662 break;
1663 case MMC_IVAR_ERASE_SECTOR:
1664 *result = ivar->erase_sector;
1665 break;
1666 case MMC_IVAR_MAX_DATA:
1667 *result = mmcbr_get_max_data(bus);
1668 break;
1669 case MMC_IVAR_CARD_ID_STRING:
1670 *(char **)result = ivar->card_id_string;
1671 break;
1672 }
1673 return (0);
1674}
1675
1676static int
1677mmc_write_ivar(device_t bus, device_t child, int which, uintptr_t value)
1678{
1679 /*
1680 * None are writable ATM
1681 */
1682 return (EINVAL);
1683}
1684
1685static void
1686mmc_delayed_attach(void *xsc)
1687{
1688 struct mmc_softc *sc = xsc;
1689
1690 mmc_scan(sc);
1691 config_intrhook_disestablish(&sc->config_intrhook);
1692}
1693
1694static int
1695mmc_child_location_str(device_t dev, device_t child, char *buf,
1696 size_t buflen)
1697{
1698
1699 snprintf(buf, buflen, "rca=0x%04x", mmc_get_rca(child));
1700 return (0);
1701}
1702
1703static device_method_t mmc_methods[] = {
1704 /* device_if */
1705 DEVMETHOD(device_probe, mmc_probe),
1706 DEVMETHOD(device_attach, mmc_attach),
1707 DEVMETHOD(device_detach, mmc_detach),
1708 DEVMETHOD(device_suspend, mmc_suspend),
1709 DEVMETHOD(device_resume, mmc_resume),
1710
1711 /* Bus interface */
1712 DEVMETHOD(bus_read_ivar, mmc_read_ivar),
1713 DEVMETHOD(bus_write_ivar, mmc_write_ivar),
1714 DEVMETHOD(bus_child_location_str, mmc_child_location_str),
1715
1716 /* MMC Bus interface */
1717 DEVMETHOD(mmcbus_wait_for_request, mmc_wait_for_request),
1718 DEVMETHOD(mmcbus_acquire_bus, mmc_acquire_bus),
1719 DEVMETHOD(mmcbus_release_bus, mmc_release_bus),
1720
1721 DEVMETHOD_END
1722};
1723
1724static driver_t mmc_driver = {
1725 "mmc",
1726 mmc_methods,
1727 sizeof(struct mmc_softc),
1728};
1729static devclass_t mmc_devclass;
1730
1731DRIVER_MODULE(mmc, ti_mmchs, mmc_driver, mmc_devclass, NULL, NULL);
1732DRIVER_MODULE(mmc, at91_mci, mmc_driver, mmc_devclass, NULL, NULL);
1733DRIVER_MODULE(mmc, sdhci_pci, mmc_driver, mmc_devclass, NULL, NULL);
1734DRIVER_MODULE(mmc, sdhci_bcm, mmc_driver, mmc_devclass, NULL, NULL);