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 char card_sn_string[16];/* Formatted serial # for disk->d_ident */
106};
107
108#define CMD_RETRIES 3
109
110#define CARD_ID_FREQUENCY 400000 /* Spec requires 400kHz max during ID phase. */
111
112static SYSCTL_NODE(_hw, OID_AUTO, mmc, CTLFLAG_RD, NULL, "mmc driver");
113
114static int mmc_debug;
115SYSCTL_INT(_hw_mmc, OID_AUTO, debug, CTLFLAG_RW, &mmc_debug, 0, "Debug level");
116
117/* bus entry points */
118static int mmc_acquire_bus(device_t busdev, device_t dev);
119static int mmc_attach(device_t dev);
120static int mmc_child_location_str(device_t dev, device_t child, char *buf,
121 size_t buflen);
122static int mmc_detach(device_t dev);
123static int mmc_probe(device_t dev);
124static int mmc_read_ivar(device_t bus, device_t child, int which,
125 uintptr_t *result);
126static int mmc_release_bus(device_t busdev, device_t dev);
127static int mmc_resume(device_t dev);
128static int mmc_suspend(device_t dev);
129static int mmc_wait_for_request(device_t brdev, device_t reqdev,
130 struct mmc_request *req);
131static int mmc_write_ivar(device_t bus, device_t child, int which,
132 uintptr_t value);
133
134#define MMC_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
135#define MMC_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
136#define MMC_LOCK_INIT(_sc) \
137 mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->dev), \
138 "mmc", MTX_DEF)
139#define MMC_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
140#define MMC_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED);
141#define MMC_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
142
143static int mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid);
144static void mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr);
145static void mmc_app_decode_sd_status(uint32_t *raw_sd_status,
146 struct mmc_sd_status *sd_status);
147static int mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca,
148 uint32_t *rawsdstatus);
149static int mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca,
150 uint32_t *rawscr);
151static int mmc_calculate_clock(struct mmc_softc *sc);
152static void mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid);
153static void mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid);
154static void mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd);
155static void mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd);
156static void mmc_delayed_attach(void *xsc);
157static int mmc_delete_cards(struct mmc_softc *sc);
158static void mmc_discover_cards(struct mmc_softc *sc);
159static void mmc_format_card_id_string(struct mmc_ivars *ivar);
160static void mmc_go_discovery(struct mmc_softc *sc);
161static uint32_t mmc_get_bits(uint32_t *bits, int bit_len, int start,
162 int size);
163static int mmc_highest_voltage(uint32_t ocr);
164static void mmc_idle_cards(struct mmc_softc *sc);
165static void mmc_ms_delay(int ms);
166static void mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard);
167static void mmc_power_down(struct mmc_softc *sc);
168static void mmc_power_up(struct mmc_softc *sc);
169static void mmc_rescan_cards(struct mmc_softc *sc);
170static void mmc_scan(struct mmc_softc *sc);
171static int mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp,
172 uint8_t value, uint8_t *res);
173static int mmc_select_card(struct mmc_softc *sc, uint16_t rca);
174static uint32_t mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr);
175static int mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr,
176 uint32_t *rocr);
177static int mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd);
178static int mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd);
179static int mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs);
180static int mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr,
181 uint32_t *rocr);
182static int mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp);
183static int mmc_send_status(struct mmc_softc *sc, uint16_t rca,
184 uint32_t *status);
185static int mmc_set_blocklen(struct mmc_softc *sc, uint32_t len);
186static int mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca,
187 int width);
188static int mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp);
189static int mmc_set_timing(struct mmc_softc *sc, int timing);
190static int mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index,
191 uint8_t value);
192static int mmc_test_bus_width(struct mmc_softc *sc);
193static int mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca,
194 struct mmc_command *cmd, int retries);
195static int mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd,
196 int retries);
197static int mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
198 uint32_t arg, uint32_t flags, uint32_t *resp, int retries);
199static int mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req);
200static void mmc_wakeup(struct mmc_request *req);
201
202static void
203mmc_ms_delay(int ms)
204{
205
206 DELAY(1000 * ms); /* XXX BAD */
207}
208
209static int
210mmc_probe(device_t dev)
211{
212
213 device_set_desc(dev, "MMC/SD bus");
214 return (0);
215}
216
217static int
218mmc_attach(device_t dev)
219{
220 struct mmc_softc *sc;
221
222 sc = device_get_softc(dev);
223 sc->dev = dev;
224 MMC_LOCK_INIT(sc);
225
226 /* We'll probe and attach our children later, but before / mount */
227 sc->config_intrhook.ich_func = mmc_delayed_attach;
228 sc->config_intrhook.ich_arg = sc;
229 if (config_intrhook_establish(&sc->config_intrhook) != 0)
230 device_printf(dev, "config_intrhook_establish failed\n");
231 return (0);
232}
233
234static int
235mmc_detach(device_t dev)
236{
237 struct mmc_softc *sc = device_get_softc(dev);
238 int err;
239
240 if ((err = mmc_delete_cards(sc)) != 0)
241 return (err);
242 mmc_power_down(sc);
243 MMC_LOCK_DESTROY(sc);
244
245 return (0);
246}
247
248static int
249mmc_suspend(device_t dev)
250{
251 struct mmc_softc *sc = device_get_softc(dev);
252 int err;
253
254 err = bus_generic_suspend(dev);
255 if (err)
256 return (err);
257 mmc_power_down(sc);
258 return (0);
259}
260
261static int
262mmc_resume(device_t dev)
263{
264 struct mmc_softc *sc = device_get_softc(dev);
265
266 mmc_scan(sc);
267 return (bus_generic_resume(dev));
268}
269
270static int
271mmc_acquire_bus(device_t busdev, device_t dev)
272{
273 struct mmc_softc *sc;
274 struct mmc_ivars *ivar;
275 int err;
276 int rca;
277
278 err = MMCBR_ACQUIRE_HOST(device_get_parent(busdev), busdev);
279 if (err)
280 return (err);
281 sc = device_get_softc(busdev);
282 MMC_LOCK(sc);
283 if (sc->owner)
284 panic("mmc: host bridge didn't serialize us.");
285 sc->owner = dev;
286 MMC_UNLOCK(sc);
287
288 if (busdev != dev) {
289 /*
290 * Keep track of the last rca that we've selected. If
291 * we're asked to do it again, don't. We never
292 * unselect unless the bus code itself wants the mmc
293 * bus, and constantly reselecting causes problems.
294 */
295 rca = mmc_get_rca(dev);
296 if (sc->last_rca != rca) {
297 mmc_select_card(sc, rca);
298 sc->last_rca = rca;
299 /* Prepare bus width for the new card. */
300 ivar = device_get_ivars(dev);
301 if (bootverbose || mmc_debug) {
302 device_printf(busdev,
303 "setting bus width to %d bits\n",
304 (ivar->bus_width == bus_width_4) ? 4 :
305 (ivar->bus_width == bus_width_8) ? 8 : 1);
306 }
307 mmc_set_card_bus_width(sc, rca, ivar->bus_width);
308 mmcbr_set_bus_width(busdev, ivar->bus_width);
309 mmcbr_update_ios(busdev);
310 }
311 } else {
312 /*
313 * If there's a card selected, stand down.
314 */
315 if (sc->last_rca != 0) {
316 mmc_select_card(sc, 0);
317 sc->last_rca = 0;
318 }
319 }
320
321 return (0);
322}
323
324static int
325mmc_release_bus(device_t busdev, device_t dev)
326{
327 struct mmc_softc *sc;
328 int err;
329
330 sc = device_get_softc(busdev);
331
332 MMC_LOCK(sc);
333 if (!sc->owner)
334 panic("mmc: releasing unowned bus.");
335 if (sc->owner != dev)
336 panic("mmc: you don't own the bus. game over.");
337 MMC_UNLOCK(sc);
338 err = MMCBR_RELEASE_HOST(device_get_parent(busdev), busdev);
339 if (err)
340 return (err);
341 MMC_LOCK(sc);
342 sc->owner = NULL;
343 MMC_UNLOCK(sc);
344 return (0);
345}
346
347static uint32_t
348mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr)
349{
350
351 return (ocr & MMC_OCR_VOLTAGE);
352}
353
354static int
355mmc_highest_voltage(uint32_t ocr)
356{
357 int i;
358
359 for (i = MMC_OCR_MAX_VOLTAGE_SHIFT;
360 i >= MMC_OCR_MIN_VOLTAGE_SHIFT; i--)
361 if (ocr & (1 << i))
362 return (i);
363 return (-1);
364}
365
366static void
367mmc_wakeup(struct mmc_request *req)
368{
369 struct mmc_softc *sc;
370
371 sc = (struct mmc_softc *)req->done_data;
372 MMC_LOCK(sc);
373 req->flags |= MMC_REQ_DONE;
374 MMC_UNLOCK(sc);
375 wakeup(req);
376}
377
378static int
379mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req)
380{
381
382 req->done = mmc_wakeup;
383 req->done_data = sc;
384 if (mmc_debug > 1) {
385 device_printf(sc->dev, "REQUEST: CMD%d arg %#x flags %#x",
386 req->cmd->opcode, req->cmd->arg, req->cmd->flags);
387 if (req->cmd->data) {
388 printf(" data %d\n", (int)req->cmd->data->len);
389 } else
390 printf("\n");
391 }
392 MMCBR_REQUEST(device_get_parent(sc->dev), sc->dev, req);
393 MMC_LOCK(sc);
394 while ((req->flags & MMC_REQ_DONE) == 0)
395 msleep(req, &sc->sc_mtx, 0, "mmcreq", 0);
396 MMC_UNLOCK(sc);
397 if (mmc_debug > 2 || (mmc_debug > 0 && req->cmd->error != MMC_ERR_NONE))
398 device_printf(sc->dev, "CMD%d RESULT: %d\n",
399 req->cmd->opcode, req->cmd->error);
400 return (0);
401}
402
403static int
404mmc_wait_for_request(device_t brdev, device_t reqdev, struct mmc_request *req)
405{
406 struct mmc_softc *sc = device_get_softc(brdev);
407
408 return (mmc_wait_for_req(sc, req));
409}
410
411static int
412mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd, int retries)
413{
414 struct mmc_request mreq;
415 int err;
416
417 do {
418 memset(&mreq, 0, sizeof(mreq));
419 memset(cmd->resp, 0, sizeof(cmd->resp));
420 cmd->retries = 0; /* Retries done here, not in hardware. */
421 cmd->mrq = &mreq;
422 mreq.cmd = cmd;
423 if (mmc_wait_for_req(sc, &mreq) != 0)
424 err = MMC_ERR_FAILED;
425 else
426 err = cmd->error;
427 } while (err != MMC_ERR_NONE && retries-- > 0);
428
429 return (err);
430}
431
432static int
433mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca,
434 struct mmc_command *cmd, int retries)
435{
436 struct mmc_command appcmd;
437 int err;
438
439 do {
440 memset(&appcmd, 0, sizeof(appcmd));
441 appcmd.opcode = MMC_APP_CMD;
442 appcmd.arg = rca << 16;
443 appcmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
444 appcmd.data = NULL;
445 if (mmc_wait_for_cmd(sc, &appcmd, 0) != 0)
446 err = MMC_ERR_FAILED;
447 else
448 err = appcmd.error;
449 if (err == MMC_ERR_NONE) {
450 if (!(appcmd.resp[0] & R1_APP_CMD))
451 err = MMC_ERR_FAILED;
452 else if (mmc_wait_for_cmd(sc, cmd, 0) != 0)
453 err = MMC_ERR_FAILED;
454 else
455 err = cmd->error;
456 }
457 } while (err != MMC_ERR_NONE && retries-- > 0);
458
459 return (err);
460}
461
462static int
463mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
464 uint32_t arg, uint32_t flags, uint32_t *resp, int retries)
465{
466 struct mmc_command cmd;
467 int err;
468
469 memset(&cmd, 0, sizeof(cmd));
470 cmd.opcode = opcode;
471 cmd.arg = arg;
472 cmd.flags = flags;
473 cmd.data = NULL;
474 err = mmc_wait_for_cmd(sc, &cmd, retries);
475 if (err)
476 return (err);
477 if (resp) {
478 if (flags & MMC_RSP_136)
479 memcpy(resp, cmd.resp, 4 * sizeof(uint32_t));
480 else
481 *resp = cmd.resp[0];
482 }
483 return (0);
484}
485
486static void
487mmc_idle_cards(struct mmc_softc *sc)
488{
489 device_t dev;
490 struct mmc_command cmd;
491
492 dev = sc->dev;
493 mmcbr_set_chip_select(dev, cs_high);
494 mmcbr_update_ios(dev);
495 mmc_ms_delay(1);
496
497 memset(&cmd, 0, sizeof(cmd));
498 cmd.opcode = MMC_GO_IDLE_STATE;
499 cmd.arg = 0;
500 cmd.flags = MMC_RSP_NONE | MMC_CMD_BC;
501 cmd.data = NULL;
502 mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
503 mmc_ms_delay(1);
504
505 mmcbr_set_chip_select(dev, cs_dontcare);
506 mmcbr_update_ios(dev);
507 mmc_ms_delay(1);
508}
509
510static int
511mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
512{
513 struct mmc_command cmd;
514 int err = MMC_ERR_NONE, i;
515
516 memset(&cmd, 0, sizeof(cmd));
517 cmd.opcode = ACMD_SD_SEND_OP_COND;
518 cmd.arg = ocr;
519 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
520 cmd.data = NULL;
521
522 for (i = 0; i < 1000; i++) {
523 err = mmc_wait_for_app_cmd(sc, 0, &cmd, CMD_RETRIES);
524 if (err != MMC_ERR_NONE)
525 break;
526 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
527 (ocr & MMC_OCR_VOLTAGE) == 0)
528 break;
529 err = MMC_ERR_TIMEOUT;
530 mmc_ms_delay(10);
531 }
532 if (rocr && err == MMC_ERR_NONE)
533 *rocr = cmd.resp[0];
534 return (err);
535}
536
537static int
538mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
539{
540 struct mmc_command cmd;
541 int err = MMC_ERR_NONE, i;
542
543 memset(&cmd, 0, sizeof(cmd));
544 cmd.opcode = MMC_SEND_OP_COND;
545 cmd.arg = ocr;
546 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
547 cmd.data = NULL;
548
549 for (i = 0; i < 1000; i++) {
550 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
551 if (err != MMC_ERR_NONE)
552 break;
553 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
554 (ocr & MMC_OCR_VOLTAGE) == 0)
555 break;
556 err = MMC_ERR_TIMEOUT;
557 mmc_ms_delay(10);
558 }
559 if (rocr && err == MMC_ERR_NONE)
560 *rocr = cmd.resp[0];
561 return (err);
562}
563
564static int
565mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs)
566{
567 struct mmc_command cmd;
568 int err;
569
570 memset(&cmd, 0, sizeof(cmd));
571 cmd.opcode = SD_SEND_IF_COND;
572 cmd.arg = (vhs << 8) + 0xAA;
573 cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR;
574 cmd.data = NULL;
575
576 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
577 return (err);
578}
579
580static void
581mmc_power_up(struct mmc_softc *sc)
582{
583 device_t dev;
584
585 dev = sc->dev;
586 mmcbr_set_vdd(dev, mmc_highest_voltage(mmcbr_get_host_ocr(dev)));
587 mmcbr_set_bus_mode(dev, opendrain);
588 mmcbr_set_chip_select(dev, cs_dontcare);
589 mmcbr_set_bus_width(dev, bus_width_1);
590 mmcbr_set_power_mode(dev, power_up);
591 mmcbr_set_clock(dev, 0);
592 mmcbr_update_ios(dev);
593 mmc_ms_delay(1);
594
595 mmcbr_set_clock(dev, CARD_ID_FREQUENCY);
596 mmcbr_set_timing(dev, bus_timing_normal);
597 mmcbr_set_power_mode(dev, power_on);
598 mmcbr_update_ios(dev);
599 mmc_ms_delay(2);
600}
601
602static void
603mmc_power_down(struct mmc_softc *sc)
604{
605 device_t dev = sc->dev;
606
607 mmcbr_set_bus_mode(dev, opendrain);
608 mmcbr_set_chip_select(dev, cs_dontcare);
609 mmcbr_set_bus_width(dev, bus_width_1);
610 mmcbr_set_power_mode(dev, power_off);
611 mmcbr_set_clock(dev, 0);
612 mmcbr_set_timing(dev, bus_timing_normal);
613 mmcbr_update_ios(dev);
614}
615
616static int
617mmc_select_card(struct mmc_softc *sc, uint16_t rca)
618{
619 int flags;
620
621 flags = (rca ? MMC_RSP_R1B : MMC_RSP_NONE) | MMC_CMD_AC;
622 return (mmc_wait_for_command(sc, MMC_SELECT_CARD, (uint32_t)rca << 16,
623 flags, NULL, CMD_RETRIES));
624}
625
626static int
627mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index, uint8_t value)
628{
629 struct mmc_command cmd;
630 int err;
631
632 memset(&cmd, 0, sizeof(cmd));
633 cmd.opcode = MMC_SWITCH_FUNC;
634 cmd.arg = (MMC_SWITCH_FUNC_WR << 24) |
635 (index << 16) |
636 (value << 8) |
637 set;
638 cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
639 cmd.data = NULL;
640 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
641 return (err);
642}
643
644static int
645mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp, uint8_t value,
646 uint8_t *res)
647{
648 int err;
649 struct mmc_command cmd;
650 struct mmc_data data;
651
652 memset(&cmd, 0, sizeof(cmd));
653 memset(&data, 0, sizeof(data));
654 memset(res, 0, 64);
655
656 cmd.opcode = SD_SWITCH_FUNC;
657 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
658 cmd.arg = mode << 31; /* 0 - check, 1 - set */
659 cmd.arg |= 0x00FFFFFF;
660 cmd.arg &= ~(0xF << (grp * 4));
661 cmd.arg |= value << (grp * 4);
662 cmd.data = &data;
663
664 data.data = res;
665 data.len = 64;
666 data.flags = MMC_DATA_READ;
667
668 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
669 return (err);
670}
671
672static int
673mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, int width)
674{
675 struct mmc_command cmd;
676 int err;
677 uint8_t value;
678
679 if (mmcbr_get_mode(sc->dev) == mode_sd) {
680 memset(&cmd, 0, sizeof(cmd));
681 cmd.opcode = ACMD_SET_CLR_CARD_DETECT;
682 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
683 cmd.arg = SD_CLR_CARD_DETECT;
684 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
685 if (err != 0)
686 return (err);
687 memset(&cmd, 0, sizeof(cmd));
688 cmd.opcode = ACMD_SET_BUS_WIDTH;
689 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
690 switch (width) {
691 case bus_width_1:
692 cmd.arg = SD_BUS_WIDTH_1;
693 break;
694 case bus_width_4:
695 cmd.arg = SD_BUS_WIDTH_4;
696 break;
697 default:
698 return (MMC_ERR_INVALID);
699 }
700 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
701 } else {
702 switch (width) {
703 case bus_width_1:
704 value = EXT_CSD_BUS_WIDTH_1;
705 break;
706 case bus_width_4:
707 value = EXT_CSD_BUS_WIDTH_4;
708 break;
709 case bus_width_8:
710 value = EXT_CSD_BUS_WIDTH_8;
711 break;
712 default:
713 return (MMC_ERR_INVALID);
714 }
715 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
716 value);
717 }
718 return (err);
719}
720
721static int
722mmc_set_timing(struct mmc_softc *sc, int timing)
723{
724 int err;
725 uint8_t value;
726 u_char switch_res[64];
727
728 switch (timing) {
729 case bus_timing_normal:
730 value = 0;
731 break;
732 case bus_timing_hs:
733 value = 1;
734 break;
735 default:
736 return (MMC_ERR_INVALID);
737 }
738 if (mmcbr_get_mode(sc->dev) == mode_sd)
739 err = mmc_sd_switch(sc, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1,
740 value, switch_res);
741 else
742 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL,
743 EXT_CSD_HS_TIMING, value);
744 return (err);
745}
746
747static int
748mmc_test_bus_width(struct mmc_softc *sc)
749{
750 struct mmc_command cmd;
751 struct mmc_data data;
752 int err;
753 uint8_t buf[8];
754 uint8_t p8[8] = { 0x55, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
755 uint8_t p8ok[8] = { 0xAA, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
756 uint8_t p4[4] = { 0x5A, 0x00, 0x00, 0x00, };
757 uint8_t p4ok[4] = { 0xA5, 0x00, 0x00, 0x00, };
758
759 if (mmcbr_get_caps(sc->dev) & MMC_CAP_8_BIT_DATA) {
760 mmcbr_set_bus_width(sc->dev, bus_width_8);
761 mmcbr_update_ios(sc->dev);
762
763 memset(&cmd, 0, sizeof(cmd));
764 memset(&data, 0, sizeof(data));
765 cmd.opcode = MMC_BUSTEST_W;
766 cmd.arg = 0;
767 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
768 cmd.data = &data;
769
770 data.data = p8;
771 data.len = 8;
772 data.flags = MMC_DATA_WRITE;
773 mmc_wait_for_cmd(sc, &cmd, 0);
774
775 memset(&cmd, 0, sizeof(cmd));
776 memset(&data, 0, sizeof(data));
777 cmd.opcode = MMC_BUSTEST_R;
778 cmd.arg = 0;
779 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
780 cmd.data = &data;
781
782 data.data = buf;
783 data.len = 8;
784 data.flags = MMC_DATA_READ;
785 err = mmc_wait_for_cmd(sc, &cmd, 0);
786
787 mmcbr_set_bus_width(sc->dev, bus_width_1);
788 mmcbr_update_ios(sc->dev);
789
790 if (err == MMC_ERR_NONE && memcmp(buf, p8ok, 8) == 0)
791 return (bus_width_8);
792 }
793
794 if (mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) {
795 mmcbr_set_bus_width(sc->dev, bus_width_4);
796 mmcbr_update_ios(sc->dev);
797
798 memset(&cmd, 0, sizeof(cmd));
799 memset(&data, 0, sizeof(data));
800 cmd.opcode = MMC_BUSTEST_W;
801 cmd.arg = 0;
802 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
803 cmd.data = &data;
804
805 data.data = p4;
806 data.len = 4;
807 data.flags = MMC_DATA_WRITE;
808 mmc_wait_for_cmd(sc, &cmd, 0);
809
810 memset(&cmd, 0, sizeof(cmd));
811 memset(&data, 0, sizeof(data));
812 cmd.opcode = MMC_BUSTEST_R;
813 cmd.arg = 0;
814 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
815 cmd.data = &data;
816
817 data.data = buf;
818 data.len = 4;
819 data.flags = MMC_DATA_READ;
820 err = mmc_wait_for_cmd(sc, &cmd, 0);
821
822 mmcbr_set_bus_width(sc->dev, bus_width_1);
823 mmcbr_update_ios(sc->dev);
824
825 if (err == MMC_ERR_NONE && memcmp(buf, p4ok, 4) == 0)
826 return (bus_width_4);
827 }
828 return (bus_width_1);
829}
830
831static uint32_t
832mmc_get_bits(uint32_t *bits, int bit_len, int start, int size)
833{
834 const int i = (bit_len / 32) - (start / 32) - 1;
835 const int shift = start & 31;
836 uint32_t retval = bits[i] >> shift;
837 if (size + shift > 32)
838 retval |= bits[i - 1] << (32 - shift);
839 return (retval & ((1llu << size) - 1));
840}
841
842static void
843mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid)
844{
845 int i;
846
847 /* There's no version info, so we take it on faith */
848 memset(cid, 0, sizeof(*cid));
849 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
850 cid->oid = mmc_get_bits(raw_cid, 128, 104, 16);
851 for (i = 0; i < 5; i++)
852 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
853 cid->pnm[5] = 0;
854 cid->prv = mmc_get_bits(raw_cid, 128, 56, 8);
855 cid->psn = mmc_get_bits(raw_cid, 128, 24, 32);
856 cid->mdt_year = mmc_get_bits(raw_cid, 128, 12, 8) + 2000;
857 cid->mdt_month = mmc_get_bits(raw_cid, 128, 8, 4);
858}
859
860static void
861mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid)
862{
863 int i;
864
865 /* There's no version info, so we take it on faith */
866 memset(cid, 0, sizeof(*cid));
867 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
868 cid->oid = mmc_get_bits(raw_cid, 128, 104, 8);
869 for (i = 0; i < 6; i++)
870 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
871 cid->pnm[6] = 0;
872 cid->prv = mmc_get_bits(raw_cid, 128, 48, 8);
873 cid->psn = mmc_get_bits(raw_cid, 128, 16, 32);
874 cid->mdt_month = mmc_get_bits(raw_cid, 128, 12, 4);
875 cid->mdt_year = mmc_get_bits(raw_cid, 128, 8, 4) + 1997;
876}
877
878static void
879mmc_format_card_id_string(struct mmc_ivars *ivar)
880{
881 char oidstr[8];
882 uint8_t c1;
883 uint8_t c2;
884
885 /*
886 * Format a card ID string for use by the mmcsd driver, it's what
887 * appears between the <> in the following:
888 * mmcsd0: 968MB <SD SD01G 8.0 SN 2686905 Mfg 08/2008 by 3 TN> at mmc0
889 * 22.5MHz/4bit/128-block
890 *
891 * Also format just the card serial number, which the mmcsd driver will
892 * use as the disk->d_ident string.
893 *
894 * The card_id_string in mmc_ivars is currently allocated as 64 bytes,
895 * and our max formatted length is currently 55 bytes if every field
896 * contains the largest value.
897 *
898 * Sometimes the oid is two printable ascii chars; when it's not,
899 * format it as 0xnnnn instead.
900 */
901 c1 = (ivar->cid.oid >> 8) & 0x0ff;
902 c2 = ivar->cid.oid & 0x0ff;
903 if (c1 > 0x1f && c1 < 0x7f && c2 > 0x1f && c2 < 0x7f)
904 snprintf(oidstr, sizeof(oidstr), "%c%c", c1, c2);
905 else
906 snprintf(oidstr, sizeof(oidstr), "0x%04x", ivar->cid.oid);
907 snprintf(ivar->card_sn_string, sizeof(ivar->card_sn_string),
908 "%08X", ivar->cid.psn);
909 snprintf(ivar->card_id_string, sizeof(ivar->card_id_string),
910 "%s%s %s %d.%d SN %08X MFG %02d/%04d by %d %s",
911 ivar->mode == mode_sd ? "SD" : "MMC", ivar->high_cap ? "HC" : "",
912 ivar->cid.pnm, ivar->cid.prv >> 4, ivar->cid.prv & 0x0f,
913 ivar->cid.psn, ivar->cid.mdt_month, ivar->cid.mdt_year,
914 ivar->cid.mid, oidstr);
915}
916
917static const int exp[8] = {
918 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
919};
920
921static const int mant[16] = {
922 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80
923};
924
925static const int cur_min[8] = {
926 500, 1000, 5000, 10000, 25000, 35000, 60000, 100000
927};
928
929static const int cur_max[8] = {
930 1000, 5000, 10000, 25000, 35000, 45000, 800000, 200000
931};
932
933static void
934mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd)
935{
936 int v;
937 int m;
938 int e;
939
940 memset(csd, 0, sizeof(*csd));
941 csd->csd_structure = v = mmc_get_bits(raw_csd, 128, 126, 2);
942 if (v == 0) {
943 m = mmc_get_bits(raw_csd, 128, 115, 4);
944 e = mmc_get_bits(raw_csd, 128, 112, 3);
945 csd->tacc = (exp[e] * mant[m] + 9) / 10;
946 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
947 m = mmc_get_bits(raw_csd, 128, 99, 4);
948 e = mmc_get_bits(raw_csd, 128, 96, 3);
949 csd->tran_speed = exp[e] * 10000 * mant[m];
950 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
951 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
952 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
953 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
954 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
955 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
956 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
957 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
958 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
959 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
960 m = mmc_get_bits(raw_csd, 128, 62, 12);
961 e = mmc_get_bits(raw_csd, 128, 47, 3);
962 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
963 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
964 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
965 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
966 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
967 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
968 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
969 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
970 } else if (v == 1) {
971 m = mmc_get_bits(raw_csd, 128, 115, 4);
972 e = mmc_get_bits(raw_csd, 128, 112, 3);
973 csd->tacc = (exp[e] * mant[m] + 9) / 10;
974 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
975 m = mmc_get_bits(raw_csd, 128, 99, 4);
976 e = mmc_get_bits(raw_csd, 128, 96, 3);
977 csd->tran_speed = exp[e] * 10000 * mant[m];
978 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
979 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
980 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
981 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
982 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
983 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
984 csd->capacity = ((uint64_t)mmc_get_bits(raw_csd, 128, 48, 22) + 1) *
985 512 * 1024;
986 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
987 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
988 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
989 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
990 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
991 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
992 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
993 } else
994 panic("unknown SD CSD version");
995}
996
997static void
998mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd)
999{
1000 int m;
1001 int e;
1002
1003 memset(csd, 0, sizeof(*csd));
1004 csd->csd_structure = mmc_get_bits(raw_csd, 128, 126, 2);
1005 csd->spec_vers = mmc_get_bits(raw_csd, 128, 122, 4);
1006 m = mmc_get_bits(raw_csd, 128, 115, 4);
1007 e = mmc_get_bits(raw_csd, 128, 112, 3);
1008 csd->tacc = exp[e] * mant[m] + 9 / 10;
1009 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
1010 m = mmc_get_bits(raw_csd, 128, 99, 4);
1011 e = mmc_get_bits(raw_csd, 128, 96, 3);
1012 csd->tran_speed = exp[e] * 10000 * mant[m];
1013 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
1014 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
1015 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
1016 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
1017 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
1018 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
1019 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
1020 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
1021 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
1022 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
1023 m = mmc_get_bits(raw_csd, 128, 62, 12);
1024 e = mmc_get_bits(raw_csd, 128, 47, 3);
1025 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
1026 csd->erase_blk_en = 0;
1027 csd->erase_sector = (mmc_get_bits(raw_csd, 128, 42, 5) + 1) *
1028 (mmc_get_bits(raw_csd, 128, 37, 5) + 1);
1029 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 5);
1030 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
1031 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
1032 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
1033 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
1034}
1035
1036static void
1037mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr)
1038{
1039 unsigned int scr_struct;
1040
1041 memset(scr, 0, sizeof(*scr));
1042
1043 scr_struct = mmc_get_bits(raw_scr, 64, 60, 4);
1044 if (scr_struct != 0) {
1045 printf("Unrecognised SCR structure version %d\n",
1046 scr_struct);
1047 return;
1048 }
1049 scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4);
1050 scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4);
1051}
1052
1053static void
1054mmc_app_decode_sd_status(uint32_t *raw_sd_status,
1055 struct mmc_sd_status *sd_status)
1056{
1057
1058 memset(sd_status, 0, sizeof(*sd_status));
1059
1060 sd_status->bus_width = mmc_get_bits(raw_sd_status, 512, 510, 2);
1061 sd_status->secured_mode = mmc_get_bits(raw_sd_status, 512, 509, 1);
1062 sd_status->card_type = mmc_get_bits(raw_sd_status, 512, 480, 16);
1063 sd_status->prot_area = mmc_get_bits(raw_sd_status, 512, 448, 12);
1064 sd_status->speed_class = mmc_get_bits(raw_sd_status, 512, 440, 8);
1065 sd_status->perf_move = mmc_get_bits(raw_sd_status, 512, 432, 8);
1066 sd_status->au_size = mmc_get_bits(raw_sd_status, 512, 428, 4);
1067 sd_status->erase_size = mmc_get_bits(raw_sd_status, 512, 408, 16);
1068 sd_status->erase_timeout = mmc_get_bits(raw_sd_status, 512, 402, 6);
1069 sd_status->erase_offset = mmc_get_bits(raw_sd_status, 512, 400, 2);
1070}
1071
1072static int
1073mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid)
1074{
1075 struct mmc_command cmd;
1076 int err;
1077
1078 memset(&cmd, 0, sizeof(cmd));
1079 cmd.opcode = MMC_ALL_SEND_CID;
1080 cmd.arg = 0;
1081 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
1082 cmd.data = NULL;
1083 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1084 memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t));
1085 return (err);
1086}
1087
1088static int
1089mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd)
1090{
1091 struct mmc_command cmd;
1092 int err;
1093
1094 memset(&cmd, 0, sizeof(cmd));
1095 cmd.opcode = MMC_SEND_CSD;
1096 cmd.arg = rca << 16;
1097 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
1098 cmd.data = NULL;
1099 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1100 memcpy(rawcsd, cmd.resp, 4 * sizeof(uint32_t));
1101 return (err);
1102}
1103
1104static int
1105mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr)
1106{
1107 int err;
1108 struct mmc_command cmd;
1109 struct mmc_data data;
1110
1111 memset(&cmd, 0, sizeof(cmd));
1112 memset(&data, 0, sizeof(data));
1113
1114 memset(rawscr, 0, 8);
1115 cmd.opcode = ACMD_SEND_SCR;
1116 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1117 cmd.arg = 0;
1118 cmd.data = &data;
1119
1120 data.data = rawscr;
1121 data.len = 8;
1122 data.flags = MMC_DATA_READ;
1123
1124 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
1125 rawscr[0] = be32toh(rawscr[0]);
1126 rawscr[1] = be32toh(rawscr[1]);
1127 return (err);
1128}
1129
1130static int
1131mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd)
1132{
1133 int err;
1134 struct mmc_command cmd;
1135 struct mmc_data data;
1136
1137 memset(&cmd, 0, sizeof(cmd));
1138 memset(&data, 0, sizeof(data));
1139
1140 memset(rawextcsd, 0, 512);
1141 cmd.opcode = MMC_SEND_EXT_CSD;
1142 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1143 cmd.arg = 0;
1144 cmd.data = &data;
1145
1146 data.data = rawextcsd;
1147 data.len = 512;
1148 data.flags = MMC_DATA_READ;
1149
1150 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1151 return (err);
1152}
1153
1154static int
1155mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, uint32_t *rawsdstatus)
1156{
1157 int err, i;
1158 struct mmc_command cmd;
1159 struct mmc_data data;
1160
1161 memset(&cmd, 0, sizeof(cmd));
1162 memset(&data, 0, sizeof(data));
1163
1164 memset(rawsdstatus, 0, 64);
1165 cmd.opcode = ACMD_SD_STATUS;
1166 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1167 cmd.arg = 0;
1168 cmd.data = &data;
1169
1170 data.data = rawsdstatus;
1171 data.len = 64;
1172 data.flags = MMC_DATA_READ;
1173
1174 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
1175 for (i = 0; i < 16; i++)
1176 rawsdstatus[i] = be32toh(rawsdstatus[i]);
1177 return (err);
1178}
1179
1180static int
1181mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp)
1182{
1183 struct mmc_command cmd;
1184 int err;
1185
1186 memset(&cmd, 0, sizeof(cmd));
1187 cmd.opcode = MMC_SET_RELATIVE_ADDR;
1188 cmd.arg = resp << 16;
1189 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
1190 cmd.data = NULL;
1191 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1192 return (err);
1193}
1194
1195static int
1196mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp)
1197{
1198 struct mmc_command cmd;
1199 int err;
1200
1201 memset(&cmd, 0, sizeof(cmd));
1202 cmd.opcode = SD_SEND_RELATIVE_ADDR;
1203 cmd.arg = 0;
1204 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
1205 cmd.data = NULL;
1206 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1207 *resp = cmd.resp[0];
1208 return (err);
1209}
1210
1211static int
1212mmc_send_status(struct mmc_softc *sc, uint16_t rca, uint32_t *status)
1213{
1214 struct mmc_command cmd;
1215 int err;
1216
1217 memset(&cmd, 0, sizeof(cmd));
1218 cmd.opcode = MMC_SEND_STATUS;
1219 cmd.arg = rca << 16;
1220 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
1221 cmd.data = NULL;
1222 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1223 *status = cmd.resp[0];
1224 return (err);
1225}
1226
1227static int
1228mmc_set_blocklen(struct mmc_softc *sc, uint32_t len)
1229{
1230 struct mmc_command cmd;
1231 int err;
1232
1233 memset(&cmd, 0, sizeof(cmd));
1234 cmd.opcode = MMC_SET_BLOCKLEN;
1235 cmd.arg = len;
1236 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
1237 cmd.data = NULL;
1238 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1239 return (err);
1240}
1241
1242static void
1243mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard)
1244{
1245 device_printf(dev, "Card at relative address 0x%04x%s:\n",
1246 ivar->rca, newcard ? " added" : "");
1247 device_printf(dev, " card: %s\n", ivar->card_id_string);
1248 device_printf(dev, " bus: %ubit, %uMHz%s\n",
1249 (ivar->bus_width == bus_width_1 ? 1 :
1250 (ivar->bus_width == bus_width_4 ? 4 : 8)),
1251 (ivar->timing == bus_timing_hs ?
1252 ivar->hs_tran_speed : ivar->tran_speed) / 1000000,
1253 ivar->timing == bus_timing_hs ? ", high speed timing" : "");
1254 device_printf(dev, " memory: %u blocks, erase sector %u blocks%s\n",
1255 ivar->sec_count, ivar->erase_sector,
1256 ivar->read_only ? ", read-only" : "");
1257}
1258
1259static void
1260mmc_discover_cards(struct mmc_softc *sc)
1261{
1262 struct mmc_ivars *ivar = NULL;
1263 device_t *devlist;
1264 int err, i, devcount, newcard;
1265 uint32_t raw_cid[4], resp, sec_count, status;
1266 device_t child;
1267 uint16_t rca = 2;
1268 u_char switch_res[64];
1269
1270 if (bootverbose || mmc_debug)
1271 device_printf(sc->dev, "Probing cards\n");
1272 while (1) {
1273 err = mmc_all_send_cid(sc, raw_cid);
1274 if (err == MMC_ERR_TIMEOUT)
1275 break;
1276 if (err != MMC_ERR_NONE) {
1277 device_printf(sc->dev, "Error reading CID %d\n", err);
1278 break;
1279 }
1280 newcard = 1;
1281 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
1282 return;
1283 for (i = 0; i < devcount; i++) {
1284 ivar = device_get_ivars(devlist[i]);
1285 if (memcmp(ivar->raw_cid, raw_cid, sizeof(raw_cid)) == 0) {
1286 newcard = 0;
1287 break;
1288 }
1289 }
1290 free(devlist, M_TEMP);
1291 if (bootverbose || mmc_debug) {
1292 device_printf(sc->dev, "%sard detected (CID %08x%08x%08x%08x)\n",
1293 newcard ? "New c" : "C",
1294 raw_cid[0], raw_cid[1], raw_cid[2], raw_cid[3]);
1295 }
1296 if (newcard) {
1297 ivar = malloc(sizeof(struct mmc_ivars), M_DEVBUF,
1298 M_WAITOK | M_ZERO);
1299 memcpy(ivar->raw_cid, raw_cid, sizeof(raw_cid));
1300 }
1301 if (mmcbr_get_ro(sc->dev))
1302 ivar->read_only = 1;
1303 ivar->bus_width = bus_width_1;
1304 ivar->timing = bus_timing_normal;
1305 ivar->mode = mmcbr_get_mode(sc->dev);
1306 if (ivar->mode == mode_sd) {
1307 mmc_decode_cid_sd(ivar->raw_cid, &ivar->cid);
1308 mmc_send_relative_addr(sc, &resp);
1309 ivar->rca = resp >> 16;
1310 /* Get card CSD. */
1311 mmc_send_csd(sc, ivar->rca, ivar->raw_csd);
1312 if (bootverbose || mmc_debug)
1313 device_printf(sc->dev,
1314 "%sard detected (CSD %08x%08x%08x%08x)\n",
1315 newcard ? "New c" : "C", ivar->raw_csd[0],
1316 ivar->raw_csd[1], ivar->raw_csd[2],
1317 ivar->raw_csd[3]);
1318 mmc_decode_csd_sd(ivar->raw_csd, &ivar->csd);
1319 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE;
1320 if (ivar->csd.csd_structure > 0)
1321 ivar->high_cap = 1;
1322 ivar->tran_speed = ivar->csd.tran_speed;
1323 ivar->erase_sector = ivar->csd.erase_sector *
1324 ivar->csd.write_bl_len / MMC_SECTOR_SIZE;
1325
1326 err = mmc_send_status(sc, ivar->rca, &status);
1327 if (err != MMC_ERR_NONE) {
1328 device_printf(sc->dev,
1329 "Error reading card status %d\n", err);
1330 break;
1331 }
1332 if ((status & R1_CARD_IS_LOCKED) != 0) {
1333 device_printf(sc->dev,
1334 "Card is password protected, skipping.\n");
1335 break;
1336 }
1337
1338 /* Get card SCR. Card must be selected to fetch it. */
1339 mmc_select_card(sc, ivar->rca);
1340 mmc_app_send_scr(sc, ivar->rca, ivar->raw_scr);
1341 mmc_app_decode_scr(ivar->raw_scr, &ivar->scr);
1342 /* Get card switch capabilities (command class 10). */
1343 if ((ivar->scr.sda_vsn >= 1) &&
1344 (ivar->csd.ccc & (1<<10))) {
1345 mmc_sd_switch(sc, SD_SWITCH_MODE_CHECK,
1346 SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE,
1347 switch_res);
1348 if (switch_res[13] & 2) {
1349 ivar->timing = bus_timing_hs;
1350 ivar->hs_tran_speed = SD_MAX_HS;
1351 }
1352 }
1353 mmc_app_sd_status(sc, ivar->rca, ivar->raw_sd_status);
1354 mmc_app_decode_sd_status(ivar->raw_sd_status,
1355 &ivar->sd_status);
1356 if (ivar->sd_status.au_size != 0) {
1357 ivar->erase_sector =
1358 16 << ivar->sd_status.au_size;
1359 }
1360 mmc_select_card(sc, 0);
1361 /* Find max supported bus width. */
1362 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) &&
1363 (ivar->scr.bus_widths & SD_SCR_BUS_WIDTH_4))
1364 ivar->bus_width = bus_width_4;
1365
1366 /*
1367 * Some cards that report maximum I/O block sizes
1368 * greater than 512 require the block length to be
1369 * set to 512, even though that is supposed to be
1370 * the default. Example:
1371 *
1372 * Transcend 2GB SDSC card, CID:
1373 * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000
1374 */
1375 if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE ||
1376 ivar->csd.write_bl_len != MMC_SECTOR_SIZE)
1377 mmc_set_blocklen(sc, MMC_SECTOR_SIZE);
1378
1379 mmc_format_card_id_string(ivar);
1380
1381 if (bootverbose || mmc_debug)
1382 mmc_log_card(sc->dev, ivar, newcard);
1383 if (newcard) {
1384 /* Add device. */
1385 child = device_add_child(sc->dev, NULL, -1);
1386 device_set_ivars(child, ivar);
1387 }
1388 return;
1389 }
1390 mmc_decode_cid_mmc(ivar->raw_cid, &ivar->cid);
1391 ivar->rca = rca++;
1392 mmc_set_relative_addr(sc, ivar->rca);
1393 /* Get card CSD. */
1394 mmc_send_csd(sc, ivar->rca, ivar->raw_csd);
1395 if (bootverbose || mmc_debug)
1396 device_printf(sc->dev,
1397 "%sard detected (CSD %08x%08x%08x%08x)\n",
1398 newcard ? "New c" : "C", ivar->raw_csd[0],
1399 ivar->raw_csd[1], ivar->raw_csd[2],
1400 ivar->raw_csd[3]);
1401
1402 mmc_decode_csd_mmc(ivar->raw_csd, &ivar->csd);
1403 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE;
1404 ivar->tran_speed = ivar->csd.tran_speed;
1405 ivar->erase_sector = ivar->csd.erase_sector *
1406 ivar->csd.write_bl_len / MMC_SECTOR_SIZE;
1407
1408 err = mmc_send_status(sc, ivar->rca, &status);
1409 if (err != MMC_ERR_NONE) {
1410 device_printf(sc->dev,
1411 "Error reading card status %d\n", err);
1412 break;
1413 }
1414 if ((status & R1_CARD_IS_LOCKED) != 0) {
1415 device_printf(sc->dev,
1416 "Card is password protected, skipping.\n");
1417 break;
1418 }
1419
1420 /* Only MMC >= 4.x cards support EXT_CSD. */
1421 if (ivar->csd.spec_vers >= 4) {
1422 /* Card must be selected to fetch EXT_CSD. */
1423 mmc_select_card(sc, ivar->rca);
1424 mmc_send_ext_csd(sc, ivar->raw_ext_csd);
1425 /* Handle extended capacity from EXT_CSD */
1426 sec_count = ivar->raw_ext_csd[EXT_CSD_SEC_CNT] +
1427 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) +
1428 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) +
1429 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1430 if (sec_count != 0) {
1431 ivar->sec_count = sec_count;
1432 ivar->high_cap = 1;
1433 }
1434 /* Get card speed in high speed mode. */
1435 ivar->timing = bus_timing_hs;
1436 if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE]
1437 & EXT_CSD_CARD_TYPE_52)
1438 ivar->hs_tran_speed = MMC_TYPE_52_MAX_HS;
1439 else if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE]
1440 & EXT_CSD_CARD_TYPE_26)
1441 ivar->hs_tran_speed = MMC_TYPE_26_MAX_HS;
1442 else
1443 ivar->hs_tran_speed = ivar->tran_speed;
1444 /* Find max supported bus width. */
1445 ivar->bus_width = mmc_test_bus_width(sc);
1446 mmc_select_card(sc, 0);
1447 /* Handle HC erase sector size. */
1448 if (ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE] != 0) {
1449 ivar->erase_sector = 1024 *
1450 ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE];
1451 mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL,
1452 EXT_CSD_ERASE_GRP_DEF, 1);
1453 }
1454 } else {
1455 ivar->bus_width = bus_width_1;
1456 ivar->timing = bus_timing_normal;
1457 }
1458
1459 /*
1460 * Some cards that report maximum I/O block sizes greater
1461 * than 512 require the block length to be set to 512, even
1462 * though that is supposed to be the default. Example:
1463 *
1464 * Transcend 2GB SDSC card, CID:
1465 * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000
1466 */
1467 if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE ||
1468 ivar->csd.write_bl_len != MMC_SECTOR_SIZE)
1469 mmc_set_blocklen(sc, MMC_SECTOR_SIZE);
1470
1471 mmc_format_card_id_string(ivar);
1472
1473 if (bootverbose || mmc_debug)
1474 mmc_log_card(sc->dev, ivar, newcard);
1475 if (newcard) {
1476 /* Add device. */
1477 child = device_add_child(sc->dev, NULL, -1);
1478 device_set_ivars(child, ivar);
1479 }
1480 }
1481}
1482
1483static void
1484mmc_rescan_cards(struct mmc_softc *sc)
1485{
1486 struct mmc_ivars *ivar = NULL;
1487 device_t *devlist;
1488 int err, i, devcount;
1489
1490 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
1491 return;
1492 for (i = 0; i < devcount; i++) {
1493 ivar = device_get_ivars(devlist[i]);
1494 if (mmc_select_card(sc, ivar->rca)) {
1495 if (bootverbose || mmc_debug)
1496 device_printf(sc->dev, "Card at relative address %d lost.\n",
1497 ivar->rca);
1498 device_delete_child(sc->dev, devlist[i]);
1499 free(ivar, M_DEVBUF);
1500 }
1501 }
1502 free(devlist, M_TEMP);
1503 mmc_select_card(sc, 0);
1504}
1505
1506static int
1507mmc_delete_cards(struct mmc_softc *sc)
1508{
1509 struct mmc_ivars *ivar;
1510 device_t *devlist;
1511 int err, i, devcount;
1512
1513 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
1514 return (err);
1515 for (i = 0; i < devcount; i++) {
1516 ivar = device_get_ivars(devlist[i]);
1517 if (bootverbose || mmc_debug)
1518 device_printf(sc->dev, "Card at relative address %d deleted.\n",
1519 ivar->rca);
1520 device_delete_child(sc->dev, devlist[i]);
1521 free(ivar, M_DEVBUF);
1522 }
1523 free(devlist, M_TEMP);
1524 return (0);
1525}
1526
1527static void
1528mmc_go_discovery(struct mmc_softc *sc)
1529{
1530 uint32_t ocr;
1531 device_t dev;
1532 int err;
1533
1534 dev = sc->dev;
1535 if (mmcbr_get_power_mode(dev) != power_on) {
1536 /*
1537 * First, try SD modes
1538 */
1539 mmcbr_set_mode(dev, mode_sd);
1540 mmc_power_up(sc);
1541 mmcbr_set_bus_mode(dev, pushpull);
1542 if (bootverbose || mmc_debug)
1543 device_printf(sc->dev, "Probing bus\n");
1544 mmc_idle_cards(sc);
1545 err = mmc_send_if_cond(sc, 1);
1546 if ((bootverbose || mmc_debug) && err == 0)
1547 device_printf(sc->dev, "SD 2.0 interface conditions: OK\n");
1548 if (mmc_send_app_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) {
1549 if (bootverbose || mmc_debug)
1550 device_printf(sc->dev, "SD probe: failed\n");
1551 /*
1552 * Failed, try MMC
1553 */
1554 mmcbr_set_mode(dev, mode_mmc);
1555 if (mmc_send_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) {
1556 if (bootverbose || mmc_debug)
1557 device_printf(sc->dev, "MMC probe: failed\n");
1558 ocr = 0; /* Failed both, powerdown. */
1559 } else if (bootverbose || mmc_debug)
1560 device_printf(sc->dev,
1561 "MMC probe: OK (OCR: 0x%08x)\n", ocr);
1562 } else if (bootverbose || mmc_debug)
1563 device_printf(sc->dev, "SD probe: OK (OCR: 0x%08x)\n", ocr);
1564
1565 mmcbr_set_ocr(dev, mmc_select_vdd(sc, ocr));
1566 if (mmcbr_get_ocr(dev) != 0)
1567 mmc_idle_cards(sc);
1568 } else {
1569 mmcbr_set_bus_mode(dev, opendrain);
1570 mmcbr_set_clock(dev, CARD_ID_FREQUENCY);
1571 mmcbr_update_ios(dev);
1572 /* XXX recompute vdd based on new cards? */
1573 }
1574 /*
1575 * Make sure that we have a mutually agreeable voltage to at least
1576 * one card on the bus.
1577 */
1578 if (bootverbose || mmc_debug)
1579 device_printf(sc->dev, "Current OCR: 0x%08x\n", mmcbr_get_ocr(dev));
1580 if (mmcbr_get_ocr(dev) == 0) {
1581 device_printf(sc->dev, "No compatible cards found on bus\n");
1582 mmc_delete_cards(sc);
1583 mmc_power_down(sc);
1584 return;
1585 }
1586 /*
1587 * Reselect the cards after we've idled them above.
1588 */
1589 if (mmcbr_get_mode(dev) == mode_sd) {
1590 err = mmc_send_if_cond(sc, 1);
1591 mmc_send_app_op_cond(sc,
1592 (err ? 0 : MMC_OCR_CCS) | mmcbr_get_ocr(dev), NULL);
1593 } else
1594 mmc_send_op_cond(sc, mmcbr_get_ocr(dev), NULL);
1595 mmc_discover_cards(sc);
1596 mmc_rescan_cards(sc);
1597
1598 mmcbr_set_bus_mode(dev, pushpull);
1599 mmcbr_update_ios(dev);
1600 mmc_calculate_clock(sc);
1601 bus_generic_attach(dev);
1602/* mmc_update_children_sysctl(dev);*/
1603}
1604
1605static int
1606mmc_calculate_clock(struct mmc_softc *sc)
1607{
1608 int max_dtr, max_hs_dtr, max_timing;
1609 int nkid, i, f_max;
1610 device_t *kids;
1611 struct mmc_ivars *ivar;
1612
1613 f_max = mmcbr_get_f_max(sc->dev);
1614 max_dtr = max_hs_dtr = f_max;
1615 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_HSPEED))
1616 max_timing = bus_timing_hs;
1617 else
1618 max_timing = bus_timing_normal;
1619 if (device_get_children(sc->dev, &kids, &nkid) != 0)
1620 panic("can't get children");
1621 for (i = 0; i < nkid; i++) {
1622 ivar = device_get_ivars(kids[i]);
1623 if (ivar->timing < max_timing)
1624 max_timing = ivar->timing;
1625 if (ivar->tran_speed < max_dtr)
1626 max_dtr = ivar->tran_speed;
1627 if (ivar->hs_tran_speed < max_hs_dtr)
1628 max_hs_dtr = ivar->hs_tran_speed;
1629 }
1630 for (i = 0; i < nkid; i++) {
1631 ivar = device_get_ivars(kids[i]);
1632 if (ivar->timing == bus_timing_normal)
1633 continue;
1634 mmc_select_card(sc, ivar->rca);
1635 mmc_set_timing(sc, max_timing);
1636 }
1637 mmc_select_card(sc, 0);
1638 free(kids, M_TEMP);
1639 if (max_timing == bus_timing_hs)
1640 max_dtr = max_hs_dtr;
1641 if (bootverbose || mmc_debug) {
1642 device_printf(sc->dev,
1643 "setting transfer rate to %d.%03dMHz%s\n",
1644 max_dtr / 1000000, (max_dtr / 1000) % 1000,
1645 max_timing == bus_timing_hs ? " (high speed timing)" : "");
1646 }
1647 mmcbr_set_timing(sc->dev, max_timing);
1648 mmcbr_set_clock(sc->dev, max_dtr);
1649 mmcbr_update_ios(sc->dev);
1650 return max_dtr;
1651}
1652
1653static void
1654mmc_scan(struct mmc_softc *sc)
1655{
1656 device_t dev = sc->dev;
1657
1658 mmc_acquire_bus(dev, dev);
1659 mmc_go_discovery(sc);
1660 mmc_release_bus(dev, dev);
1661}
1662
1663static int
1664mmc_read_ivar(device_t bus, device_t child, int which, uintptr_t *result)
1665{
1666 struct mmc_ivars *ivar = device_get_ivars(child);
1667
1668 switch (which) {
1669 default:
1670 return (EINVAL);
1671 case MMC_IVAR_DSR_IMP:
1672 *result = ivar->csd.dsr_imp;
1673 break;
1674 case MMC_IVAR_MEDIA_SIZE:
1675 *result = ivar->sec_count;
1676 break;
1677 case MMC_IVAR_RCA:
1678 *result = ivar->rca;
1679 break;
1680 case MMC_IVAR_SECTOR_SIZE:
1681 *result = MMC_SECTOR_SIZE;
1682 break;
1683 case MMC_IVAR_TRAN_SPEED:
1684 *result = mmcbr_get_clock(bus);
1685 break;
1686 case MMC_IVAR_READ_ONLY:
1687 *result = ivar->read_only;
1688 break;
1689 case MMC_IVAR_HIGH_CAP:
1690 *result = ivar->high_cap;
1691 break;
1692 case MMC_IVAR_CARD_TYPE:
1693 *result = ivar->mode;
1694 break;
1695 case MMC_IVAR_BUS_WIDTH:
1696 *result = ivar->bus_width;
1697 break;
1698 case MMC_IVAR_ERASE_SECTOR:
1699 *result = ivar->erase_sector;
1700 break;
1701 case MMC_IVAR_MAX_DATA:
1702 *result = mmcbr_get_max_data(bus);
1703 break;
1704 case MMC_IVAR_CARD_ID_STRING:
1705 *(char **)result = ivar->card_id_string;
1706 break;
1707 case MMC_IVAR_CARD_SN_STRING:
1708 *(char **)result = ivar->card_sn_string;
1709 break;
1710 }
1711 return (0);
1712}
1713
1714static int
1715mmc_write_ivar(device_t bus, device_t child, int which, uintptr_t value)
1716{
1717 /*
1718 * None are writable ATM
1719 */
1720 return (EINVAL);
1721}
1722
1723static void
1724mmc_delayed_attach(void *xsc)
1725{
1726 struct mmc_softc *sc = xsc;
1727
1728 mmc_scan(sc);
1729 config_intrhook_disestablish(&sc->config_intrhook);
1730}
1731
1732static int
1733mmc_child_location_str(device_t dev, device_t child, char *buf,
1734 size_t buflen)
1735{
1736
1737 snprintf(buf, buflen, "rca=0x%04x", mmc_get_rca(child));
1738 return (0);
1739}
1740
1741static device_method_t mmc_methods[] = {
1742 /* device_if */
1743 DEVMETHOD(device_probe, mmc_probe),
1744 DEVMETHOD(device_attach, mmc_attach),
1745 DEVMETHOD(device_detach, mmc_detach),
1746 DEVMETHOD(device_suspend, mmc_suspend),
1747 DEVMETHOD(device_resume, mmc_resume),
1748
1749 /* Bus interface */
1750 DEVMETHOD(bus_read_ivar, mmc_read_ivar),
1751 DEVMETHOD(bus_write_ivar, mmc_write_ivar),
1752 DEVMETHOD(bus_child_location_str, mmc_child_location_str),
1753
1754 /* MMC Bus interface */
1755 DEVMETHOD(mmcbus_wait_for_request, mmc_wait_for_request),
1756 DEVMETHOD(mmcbus_acquire_bus, mmc_acquire_bus),
1757 DEVMETHOD(mmcbus_release_bus, mmc_release_bus),
1758
1759 DEVMETHOD_END
1760};
1761
1762static driver_t mmc_driver = {
1763 "mmc",
1764 mmc_methods,
1765 sizeof(struct mmc_softc),
1766};
1767static devclass_t mmc_devclass;
1768
1769DRIVER_MODULE(mmc, at91_mci, mmc_driver, mmc_devclass, NULL, NULL);
1770DRIVER_MODULE(mmc, sdhci_bcm, mmc_driver, mmc_devclass, NULL, NULL);
1771DRIVER_MODULE(mmc, sdhci_fdt, mmc_driver, mmc_devclass, NULL, NULL);
1772DRIVER_MODULE(mmc, sdhci_imx, mmc_driver, mmc_devclass, NULL, NULL);
1773DRIVER_MODULE(mmc, sdhci_pci, mmc_driver, mmc_devclass, NULL, NULL);
1774DRIVER_MODULE(mmc, sdhci_ti, mmc_driver, mmc_devclass, NULL, NULL);
1775DRIVER_MODULE(mmc, ti_mmchs, mmc_driver, mmc_devclass, NULL, NULL);
| 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 char card_sn_string[16];/* Formatted serial # for disk->d_ident */
106};
107
108#define CMD_RETRIES 3
109
110#define CARD_ID_FREQUENCY 400000 /* Spec requires 400kHz max during ID phase. */
111
112static SYSCTL_NODE(_hw, OID_AUTO, mmc, CTLFLAG_RD, NULL, "mmc driver");
113
114static int mmc_debug;
115SYSCTL_INT(_hw_mmc, OID_AUTO, debug, CTLFLAG_RW, &mmc_debug, 0, "Debug level");
116
117/* bus entry points */
118static int mmc_acquire_bus(device_t busdev, device_t dev);
119static int mmc_attach(device_t dev);
120static int mmc_child_location_str(device_t dev, device_t child, char *buf,
121 size_t buflen);
122static int mmc_detach(device_t dev);
123static int mmc_probe(device_t dev);
124static int mmc_read_ivar(device_t bus, device_t child, int which,
125 uintptr_t *result);
126static int mmc_release_bus(device_t busdev, device_t dev);
127static int mmc_resume(device_t dev);
128static int mmc_suspend(device_t dev);
129static int mmc_wait_for_request(device_t brdev, device_t reqdev,
130 struct mmc_request *req);
131static int mmc_write_ivar(device_t bus, device_t child, int which,
132 uintptr_t value);
133
134#define MMC_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
135#define MMC_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
136#define MMC_LOCK_INIT(_sc) \
137 mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->dev), \
138 "mmc", MTX_DEF)
139#define MMC_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
140#define MMC_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED);
141#define MMC_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
142
143static int mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid);
144static void mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr);
145static void mmc_app_decode_sd_status(uint32_t *raw_sd_status,
146 struct mmc_sd_status *sd_status);
147static int mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca,
148 uint32_t *rawsdstatus);
149static int mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca,
150 uint32_t *rawscr);
151static int mmc_calculate_clock(struct mmc_softc *sc);
152static void mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid);
153static void mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid);
154static void mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd);
155static void mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd);
156static void mmc_delayed_attach(void *xsc);
157static int mmc_delete_cards(struct mmc_softc *sc);
158static void mmc_discover_cards(struct mmc_softc *sc);
159static void mmc_format_card_id_string(struct mmc_ivars *ivar);
160static void mmc_go_discovery(struct mmc_softc *sc);
161static uint32_t mmc_get_bits(uint32_t *bits, int bit_len, int start,
162 int size);
163static int mmc_highest_voltage(uint32_t ocr);
164static void mmc_idle_cards(struct mmc_softc *sc);
165static void mmc_ms_delay(int ms);
166static void mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard);
167static void mmc_power_down(struct mmc_softc *sc);
168static void mmc_power_up(struct mmc_softc *sc);
169static void mmc_rescan_cards(struct mmc_softc *sc);
170static void mmc_scan(struct mmc_softc *sc);
171static int mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp,
172 uint8_t value, uint8_t *res);
173static int mmc_select_card(struct mmc_softc *sc, uint16_t rca);
174static uint32_t mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr);
175static int mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr,
176 uint32_t *rocr);
177static int mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd);
178static int mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd);
179static int mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs);
180static int mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr,
181 uint32_t *rocr);
182static int mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp);
183static int mmc_send_status(struct mmc_softc *sc, uint16_t rca,
184 uint32_t *status);
185static int mmc_set_blocklen(struct mmc_softc *sc, uint32_t len);
186static int mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca,
187 int width);
188static int mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp);
189static int mmc_set_timing(struct mmc_softc *sc, int timing);
190static int mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index,
191 uint8_t value);
192static int mmc_test_bus_width(struct mmc_softc *sc);
193static int mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca,
194 struct mmc_command *cmd, int retries);
195static int mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd,
196 int retries);
197static int mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
198 uint32_t arg, uint32_t flags, uint32_t *resp, int retries);
199static int mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req);
200static void mmc_wakeup(struct mmc_request *req);
201
202static void
203mmc_ms_delay(int ms)
204{
205
206 DELAY(1000 * ms); /* XXX BAD */
207}
208
209static int
210mmc_probe(device_t dev)
211{
212
213 device_set_desc(dev, "MMC/SD bus");
214 return (0);
215}
216
217static int
218mmc_attach(device_t dev)
219{
220 struct mmc_softc *sc;
221
222 sc = device_get_softc(dev);
223 sc->dev = dev;
224 MMC_LOCK_INIT(sc);
225
226 /* We'll probe and attach our children later, but before / mount */
227 sc->config_intrhook.ich_func = mmc_delayed_attach;
228 sc->config_intrhook.ich_arg = sc;
229 if (config_intrhook_establish(&sc->config_intrhook) != 0)
230 device_printf(dev, "config_intrhook_establish failed\n");
231 return (0);
232}
233
234static int
235mmc_detach(device_t dev)
236{
237 struct mmc_softc *sc = device_get_softc(dev);
238 int err;
239
240 if ((err = mmc_delete_cards(sc)) != 0)
241 return (err);
242 mmc_power_down(sc);
243 MMC_LOCK_DESTROY(sc);
244
245 return (0);
246}
247
248static int
249mmc_suspend(device_t dev)
250{
251 struct mmc_softc *sc = device_get_softc(dev);
252 int err;
253
254 err = bus_generic_suspend(dev);
255 if (err)
256 return (err);
257 mmc_power_down(sc);
258 return (0);
259}
260
261static int
262mmc_resume(device_t dev)
263{
264 struct mmc_softc *sc = device_get_softc(dev);
265
266 mmc_scan(sc);
267 return (bus_generic_resume(dev));
268}
269
270static int
271mmc_acquire_bus(device_t busdev, device_t dev)
272{
273 struct mmc_softc *sc;
274 struct mmc_ivars *ivar;
275 int err;
276 int rca;
277
278 err = MMCBR_ACQUIRE_HOST(device_get_parent(busdev), busdev);
279 if (err)
280 return (err);
281 sc = device_get_softc(busdev);
282 MMC_LOCK(sc);
283 if (sc->owner)
284 panic("mmc: host bridge didn't serialize us.");
285 sc->owner = dev;
286 MMC_UNLOCK(sc);
287
288 if (busdev != dev) {
289 /*
290 * Keep track of the last rca that we've selected. If
291 * we're asked to do it again, don't. We never
292 * unselect unless the bus code itself wants the mmc
293 * bus, and constantly reselecting causes problems.
294 */
295 rca = mmc_get_rca(dev);
296 if (sc->last_rca != rca) {
297 mmc_select_card(sc, rca);
298 sc->last_rca = rca;
299 /* Prepare bus width for the new card. */
300 ivar = device_get_ivars(dev);
301 if (bootverbose || mmc_debug) {
302 device_printf(busdev,
303 "setting bus width to %d bits\n",
304 (ivar->bus_width == bus_width_4) ? 4 :
305 (ivar->bus_width == bus_width_8) ? 8 : 1);
306 }
307 mmc_set_card_bus_width(sc, rca, ivar->bus_width);
308 mmcbr_set_bus_width(busdev, ivar->bus_width);
309 mmcbr_update_ios(busdev);
310 }
311 } else {
312 /*
313 * If there's a card selected, stand down.
314 */
315 if (sc->last_rca != 0) {
316 mmc_select_card(sc, 0);
317 sc->last_rca = 0;
318 }
319 }
320
321 return (0);
322}
323
324static int
325mmc_release_bus(device_t busdev, device_t dev)
326{
327 struct mmc_softc *sc;
328 int err;
329
330 sc = device_get_softc(busdev);
331
332 MMC_LOCK(sc);
333 if (!sc->owner)
334 panic("mmc: releasing unowned bus.");
335 if (sc->owner != dev)
336 panic("mmc: you don't own the bus. game over.");
337 MMC_UNLOCK(sc);
338 err = MMCBR_RELEASE_HOST(device_get_parent(busdev), busdev);
339 if (err)
340 return (err);
341 MMC_LOCK(sc);
342 sc->owner = NULL;
343 MMC_UNLOCK(sc);
344 return (0);
345}
346
347static uint32_t
348mmc_select_vdd(struct mmc_softc *sc, uint32_t ocr)
349{
350
351 return (ocr & MMC_OCR_VOLTAGE);
352}
353
354static int
355mmc_highest_voltage(uint32_t ocr)
356{
357 int i;
358
359 for (i = MMC_OCR_MAX_VOLTAGE_SHIFT;
360 i >= MMC_OCR_MIN_VOLTAGE_SHIFT; i--)
361 if (ocr & (1 << i))
362 return (i);
363 return (-1);
364}
365
366static void
367mmc_wakeup(struct mmc_request *req)
368{
369 struct mmc_softc *sc;
370
371 sc = (struct mmc_softc *)req->done_data;
372 MMC_LOCK(sc);
373 req->flags |= MMC_REQ_DONE;
374 MMC_UNLOCK(sc);
375 wakeup(req);
376}
377
378static int
379mmc_wait_for_req(struct mmc_softc *sc, struct mmc_request *req)
380{
381
382 req->done = mmc_wakeup;
383 req->done_data = sc;
384 if (mmc_debug > 1) {
385 device_printf(sc->dev, "REQUEST: CMD%d arg %#x flags %#x",
386 req->cmd->opcode, req->cmd->arg, req->cmd->flags);
387 if (req->cmd->data) {
388 printf(" data %d\n", (int)req->cmd->data->len);
389 } else
390 printf("\n");
391 }
392 MMCBR_REQUEST(device_get_parent(sc->dev), sc->dev, req);
393 MMC_LOCK(sc);
394 while ((req->flags & MMC_REQ_DONE) == 0)
395 msleep(req, &sc->sc_mtx, 0, "mmcreq", 0);
396 MMC_UNLOCK(sc);
397 if (mmc_debug > 2 || (mmc_debug > 0 && req->cmd->error != MMC_ERR_NONE))
398 device_printf(sc->dev, "CMD%d RESULT: %d\n",
399 req->cmd->opcode, req->cmd->error);
400 return (0);
401}
402
403static int
404mmc_wait_for_request(device_t brdev, device_t reqdev, struct mmc_request *req)
405{
406 struct mmc_softc *sc = device_get_softc(brdev);
407
408 return (mmc_wait_for_req(sc, req));
409}
410
411static int
412mmc_wait_for_cmd(struct mmc_softc *sc, struct mmc_command *cmd, int retries)
413{
414 struct mmc_request mreq;
415 int err;
416
417 do {
418 memset(&mreq, 0, sizeof(mreq));
419 memset(cmd->resp, 0, sizeof(cmd->resp));
420 cmd->retries = 0; /* Retries done here, not in hardware. */
421 cmd->mrq = &mreq;
422 mreq.cmd = cmd;
423 if (mmc_wait_for_req(sc, &mreq) != 0)
424 err = MMC_ERR_FAILED;
425 else
426 err = cmd->error;
427 } while (err != MMC_ERR_NONE && retries-- > 0);
428
429 return (err);
430}
431
432static int
433mmc_wait_for_app_cmd(struct mmc_softc *sc, uint32_t rca,
434 struct mmc_command *cmd, int retries)
435{
436 struct mmc_command appcmd;
437 int err;
438
439 do {
440 memset(&appcmd, 0, sizeof(appcmd));
441 appcmd.opcode = MMC_APP_CMD;
442 appcmd.arg = rca << 16;
443 appcmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
444 appcmd.data = NULL;
445 if (mmc_wait_for_cmd(sc, &appcmd, 0) != 0)
446 err = MMC_ERR_FAILED;
447 else
448 err = appcmd.error;
449 if (err == MMC_ERR_NONE) {
450 if (!(appcmd.resp[0] & R1_APP_CMD))
451 err = MMC_ERR_FAILED;
452 else if (mmc_wait_for_cmd(sc, cmd, 0) != 0)
453 err = MMC_ERR_FAILED;
454 else
455 err = cmd->error;
456 }
457 } while (err != MMC_ERR_NONE && retries-- > 0);
458
459 return (err);
460}
461
462static int
463mmc_wait_for_command(struct mmc_softc *sc, uint32_t opcode,
464 uint32_t arg, uint32_t flags, uint32_t *resp, int retries)
465{
466 struct mmc_command cmd;
467 int err;
468
469 memset(&cmd, 0, sizeof(cmd));
470 cmd.opcode = opcode;
471 cmd.arg = arg;
472 cmd.flags = flags;
473 cmd.data = NULL;
474 err = mmc_wait_for_cmd(sc, &cmd, retries);
475 if (err)
476 return (err);
477 if (resp) {
478 if (flags & MMC_RSP_136)
479 memcpy(resp, cmd.resp, 4 * sizeof(uint32_t));
480 else
481 *resp = cmd.resp[0];
482 }
483 return (0);
484}
485
486static void
487mmc_idle_cards(struct mmc_softc *sc)
488{
489 device_t dev;
490 struct mmc_command cmd;
491
492 dev = sc->dev;
493 mmcbr_set_chip_select(dev, cs_high);
494 mmcbr_update_ios(dev);
495 mmc_ms_delay(1);
496
497 memset(&cmd, 0, sizeof(cmd));
498 cmd.opcode = MMC_GO_IDLE_STATE;
499 cmd.arg = 0;
500 cmd.flags = MMC_RSP_NONE | MMC_CMD_BC;
501 cmd.data = NULL;
502 mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
503 mmc_ms_delay(1);
504
505 mmcbr_set_chip_select(dev, cs_dontcare);
506 mmcbr_update_ios(dev);
507 mmc_ms_delay(1);
508}
509
510static int
511mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
512{
513 struct mmc_command cmd;
514 int err = MMC_ERR_NONE, i;
515
516 memset(&cmd, 0, sizeof(cmd));
517 cmd.opcode = ACMD_SD_SEND_OP_COND;
518 cmd.arg = ocr;
519 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
520 cmd.data = NULL;
521
522 for (i = 0; i < 1000; i++) {
523 err = mmc_wait_for_app_cmd(sc, 0, &cmd, CMD_RETRIES);
524 if (err != MMC_ERR_NONE)
525 break;
526 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
527 (ocr & MMC_OCR_VOLTAGE) == 0)
528 break;
529 err = MMC_ERR_TIMEOUT;
530 mmc_ms_delay(10);
531 }
532 if (rocr && err == MMC_ERR_NONE)
533 *rocr = cmd.resp[0];
534 return (err);
535}
536
537static int
538mmc_send_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
539{
540 struct mmc_command cmd;
541 int err = MMC_ERR_NONE, i;
542
543 memset(&cmd, 0, sizeof(cmd));
544 cmd.opcode = MMC_SEND_OP_COND;
545 cmd.arg = ocr;
546 cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
547 cmd.data = NULL;
548
549 for (i = 0; i < 1000; i++) {
550 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
551 if (err != MMC_ERR_NONE)
552 break;
553 if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
554 (ocr & MMC_OCR_VOLTAGE) == 0)
555 break;
556 err = MMC_ERR_TIMEOUT;
557 mmc_ms_delay(10);
558 }
559 if (rocr && err == MMC_ERR_NONE)
560 *rocr = cmd.resp[0];
561 return (err);
562}
563
564static int
565mmc_send_if_cond(struct mmc_softc *sc, uint8_t vhs)
566{
567 struct mmc_command cmd;
568 int err;
569
570 memset(&cmd, 0, sizeof(cmd));
571 cmd.opcode = SD_SEND_IF_COND;
572 cmd.arg = (vhs << 8) + 0xAA;
573 cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR;
574 cmd.data = NULL;
575
576 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
577 return (err);
578}
579
580static void
581mmc_power_up(struct mmc_softc *sc)
582{
583 device_t dev;
584
585 dev = sc->dev;
586 mmcbr_set_vdd(dev, mmc_highest_voltage(mmcbr_get_host_ocr(dev)));
587 mmcbr_set_bus_mode(dev, opendrain);
588 mmcbr_set_chip_select(dev, cs_dontcare);
589 mmcbr_set_bus_width(dev, bus_width_1);
590 mmcbr_set_power_mode(dev, power_up);
591 mmcbr_set_clock(dev, 0);
592 mmcbr_update_ios(dev);
593 mmc_ms_delay(1);
594
595 mmcbr_set_clock(dev, CARD_ID_FREQUENCY);
596 mmcbr_set_timing(dev, bus_timing_normal);
597 mmcbr_set_power_mode(dev, power_on);
598 mmcbr_update_ios(dev);
599 mmc_ms_delay(2);
600}
601
602static void
603mmc_power_down(struct mmc_softc *sc)
604{
605 device_t dev = sc->dev;
606
607 mmcbr_set_bus_mode(dev, opendrain);
608 mmcbr_set_chip_select(dev, cs_dontcare);
609 mmcbr_set_bus_width(dev, bus_width_1);
610 mmcbr_set_power_mode(dev, power_off);
611 mmcbr_set_clock(dev, 0);
612 mmcbr_set_timing(dev, bus_timing_normal);
613 mmcbr_update_ios(dev);
614}
615
616static int
617mmc_select_card(struct mmc_softc *sc, uint16_t rca)
618{
619 int flags;
620
621 flags = (rca ? MMC_RSP_R1B : MMC_RSP_NONE) | MMC_CMD_AC;
622 return (mmc_wait_for_command(sc, MMC_SELECT_CARD, (uint32_t)rca << 16,
623 flags, NULL, CMD_RETRIES));
624}
625
626static int
627mmc_switch(struct mmc_softc *sc, uint8_t set, uint8_t index, uint8_t value)
628{
629 struct mmc_command cmd;
630 int err;
631
632 memset(&cmd, 0, sizeof(cmd));
633 cmd.opcode = MMC_SWITCH_FUNC;
634 cmd.arg = (MMC_SWITCH_FUNC_WR << 24) |
635 (index << 16) |
636 (value << 8) |
637 set;
638 cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
639 cmd.data = NULL;
640 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
641 return (err);
642}
643
644static int
645mmc_sd_switch(struct mmc_softc *sc, uint8_t mode, uint8_t grp, uint8_t value,
646 uint8_t *res)
647{
648 int err;
649 struct mmc_command cmd;
650 struct mmc_data data;
651
652 memset(&cmd, 0, sizeof(cmd));
653 memset(&data, 0, sizeof(data));
654 memset(res, 0, 64);
655
656 cmd.opcode = SD_SWITCH_FUNC;
657 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
658 cmd.arg = mode << 31; /* 0 - check, 1 - set */
659 cmd.arg |= 0x00FFFFFF;
660 cmd.arg &= ~(0xF << (grp * 4));
661 cmd.arg |= value << (grp * 4);
662 cmd.data = &data;
663
664 data.data = res;
665 data.len = 64;
666 data.flags = MMC_DATA_READ;
667
668 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
669 return (err);
670}
671
672static int
673mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, int width)
674{
675 struct mmc_command cmd;
676 int err;
677 uint8_t value;
678
679 if (mmcbr_get_mode(sc->dev) == mode_sd) {
680 memset(&cmd, 0, sizeof(cmd));
681 cmd.opcode = ACMD_SET_CLR_CARD_DETECT;
682 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
683 cmd.arg = SD_CLR_CARD_DETECT;
684 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
685 if (err != 0)
686 return (err);
687 memset(&cmd, 0, sizeof(cmd));
688 cmd.opcode = ACMD_SET_BUS_WIDTH;
689 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
690 switch (width) {
691 case bus_width_1:
692 cmd.arg = SD_BUS_WIDTH_1;
693 break;
694 case bus_width_4:
695 cmd.arg = SD_BUS_WIDTH_4;
696 break;
697 default:
698 return (MMC_ERR_INVALID);
699 }
700 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
701 } else {
702 switch (width) {
703 case bus_width_1:
704 value = EXT_CSD_BUS_WIDTH_1;
705 break;
706 case bus_width_4:
707 value = EXT_CSD_BUS_WIDTH_4;
708 break;
709 case bus_width_8:
710 value = EXT_CSD_BUS_WIDTH_8;
711 break;
712 default:
713 return (MMC_ERR_INVALID);
714 }
715 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
716 value);
717 }
718 return (err);
719}
720
721static int
722mmc_set_timing(struct mmc_softc *sc, int timing)
723{
724 int err;
725 uint8_t value;
726 u_char switch_res[64];
727
728 switch (timing) {
729 case bus_timing_normal:
730 value = 0;
731 break;
732 case bus_timing_hs:
733 value = 1;
734 break;
735 default:
736 return (MMC_ERR_INVALID);
737 }
738 if (mmcbr_get_mode(sc->dev) == mode_sd)
739 err = mmc_sd_switch(sc, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1,
740 value, switch_res);
741 else
742 err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL,
743 EXT_CSD_HS_TIMING, value);
744 return (err);
745}
746
747static int
748mmc_test_bus_width(struct mmc_softc *sc)
749{
750 struct mmc_command cmd;
751 struct mmc_data data;
752 int err;
753 uint8_t buf[8];
754 uint8_t p8[8] = { 0x55, 0xAA, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
755 uint8_t p8ok[8] = { 0xAA, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
756 uint8_t p4[4] = { 0x5A, 0x00, 0x00, 0x00, };
757 uint8_t p4ok[4] = { 0xA5, 0x00, 0x00, 0x00, };
758
759 if (mmcbr_get_caps(sc->dev) & MMC_CAP_8_BIT_DATA) {
760 mmcbr_set_bus_width(sc->dev, bus_width_8);
761 mmcbr_update_ios(sc->dev);
762
763 memset(&cmd, 0, sizeof(cmd));
764 memset(&data, 0, sizeof(data));
765 cmd.opcode = MMC_BUSTEST_W;
766 cmd.arg = 0;
767 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
768 cmd.data = &data;
769
770 data.data = p8;
771 data.len = 8;
772 data.flags = MMC_DATA_WRITE;
773 mmc_wait_for_cmd(sc, &cmd, 0);
774
775 memset(&cmd, 0, sizeof(cmd));
776 memset(&data, 0, sizeof(data));
777 cmd.opcode = MMC_BUSTEST_R;
778 cmd.arg = 0;
779 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
780 cmd.data = &data;
781
782 data.data = buf;
783 data.len = 8;
784 data.flags = MMC_DATA_READ;
785 err = mmc_wait_for_cmd(sc, &cmd, 0);
786
787 mmcbr_set_bus_width(sc->dev, bus_width_1);
788 mmcbr_update_ios(sc->dev);
789
790 if (err == MMC_ERR_NONE && memcmp(buf, p8ok, 8) == 0)
791 return (bus_width_8);
792 }
793
794 if (mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) {
795 mmcbr_set_bus_width(sc->dev, bus_width_4);
796 mmcbr_update_ios(sc->dev);
797
798 memset(&cmd, 0, sizeof(cmd));
799 memset(&data, 0, sizeof(data));
800 cmd.opcode = MMC_BUSTEST_W;
801 cmd.arg = 0;
802 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
803 cmd.data = &data;
804
805 data.data = p4;
806 data.len = 4;
807 data.flags = MMC_DATA_WRITE;
808 mmc_wait_for_cmd(sc, &cmd, 0);
809
810 memset(&cmd, 0, sizeof(cmd));
811 memset(&data, 0, sizeof(data));
812 cmd.opcode = MMC_BUSTEST_R;
813 cmd.arg = 0;
814 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
815 cmd.data = &data;
816
817 data.data = buf;
818 data.len = 4;
819 data.flags = MMC_DATA_READ;
820 err = mmc_wait_for_cmd(sc, &cmd, 0);
821
822 mmcbr_set_bus_width(sc->dev, bus_width_1);
823 mmcbr_update_ios(sc->dev);
824
825 if (err == MMC_ERR_NONE && memcmp(buf, p4ok, 4) == 0)
826 return (bus_width_4);
827 }
828 return (bus_width_1);
829}
830
831static uint32_t
832mmc_get_bits(uint32_t *bits, int bit_len, int start, int size)
833{
834 const int i = (bit_len / 32) - (start / 32) - 1;
835 const int shift = start & 31;
836 uint32_t retval = bits[i] >> shift;
837 if (size + shift > 32)
838 retval |= bits[i - 1] << (32 - shift);
839 return (retval & ((1llu << size) - 1));
840}
841
842static void
843mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid)
844{
845 int i;
846
847 /* There's no version info, so we take it on faith */
848 memset(cid, 0, sizeof(*cid));
849 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
850 cid->oid = mmc_get_bits(raw_cid, 128, 104, 16);
851 for (i = 0; i < 5; i++)
852 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
853 cid->pnm[5] = 0;
854 cid->prv = mmc_get_bits(raw_cid, 128, 56, 8);
855 cid->psn = mmc_get_bits(raw_cid, 128, 24, 32);
856 cid->mdt_year = mmc_get_bits(raw_cid, 128, 12, 8) + 2000;
857 cid->mdt_month = mmc_get_bits(raw_cid, 128, 8, 4);
858}
859
860static void
861mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid)
862{
863 int i;
864
865 /* There's no version info, so we take it on faith */
866 memset(cid, 0, sizeof(*cid));
867 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
868 cid->oid = mmc_get_bits(raw_cid, 128, 104, 8);
869 for (i = 0; i < 6; i++)
870 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
871 cid->pnm[6] = 0;
872 cid->prv = mmc_get_bits(raw_cid, 128, 48, 8);
873 cid->psn = mmc_get_bits(raw_cid, 128, 16, 32);
874 cid->mdt_month = mmc_get_bits(raw_cid, 128, 12, 4);
875 cid->mdt_year = mmc_get_bits(raw_cid, 128, 8, 4) + 1997;
876}
877
878static void
879mmc_format_card_id_string(struct mmc_ivars *ivar)
880{
881 char oidstr[8];
882 uint8_t c1;
883 uint8_t c2;
884
885 /*
886 * Format a card ID string for use by the mmcsd driver, it's what
887 * appears between the <> in the following:
888 * mmcsd0: 968MB <SD SD01G 8.0 SN 2686905 Mfg 08/2008 by 3 TN> at mmc0
889 * 22.5MHz/4bit/128-block
890 *
891 * Also format just the card serial number, which the mmcsd driver will
892 * use as the disk->d_ident string.
893 *
894 * The card_id_string in mmc_ivars is currently allocated as 64 bytes,
895 * and our max formatted length is currently 55 bytes if every field
896 * contains the largest value.
897 *
898 * Sometimes the oid is two printable ascii chars; when it's not,
899 * format it as 0xnnnn instead.
900 */
901 c1 = (ivar->cid.oid >> 8) & 0x0ff;
902 c2 = ivar->cid.oid & 0x0ff;
903 if (c1 > 0x1f && c1 < 0x7f && c2 > 0x1f && c2 < 0x7f)
904 snprintf(oidstr, sizeof(oidstr), "%c%c", c1, c2);
905 else
906 snprintf(oidstr, sizeof(oidstr), "0x%04x", ivar->cid.oid);
907 snprintf(ivar->card_sn_string, sizeof(ivar->card_sn_string),
908 "%08X", ivar->cid.psn);
909 snprintf(ivar->card_id_string, sizeof(ivar->card_id_string),
910 "%s%s %s %d.%d SN %08X MFG %02d/%04d by %d %s",
911 ivar->mode == mode_sd ? "SD" : "MMC", ivar->high_cap ? "HC" : "",
912 ivar->cid.pnm, ivar->cid.prv >> 4, ivar->cid.prv & 0x0f,
913 ivar->cid.psn, ivar->cid.mdt_month, ivar->cid.mdt_year,
914 ivar->cid.mid, oidstr);
915}
916
917static const int exp[8] = {
918 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
919};
920
921static const int mant[16] = {
922 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80
923};
924
925static const int cur_min[8] = {
926 500, 1000, 5000, 10000, 25000, 35000, 60000, 100000
927};
928
929static const int cur_max[8] = {
930 1000, 5000, 10000, 25000, 35000, 45000, 800000, 200000
931};
932
933static void
934mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd)
935{
936 int v;
937 int m;
938 int e;
939
940 memset(csd, 0, sizeof(*csd));
941 csd->csd_structure = v = mmc_get_bits(raw_csd, 128, 126, 2);
942 if (v == 0) {
943 m = mmc_get_bits(raw_csd, 128, 115, 4);
944 e = mmc_get_bits(raw_csd, 128, 112, 3);
945 csd->tacc = (exp[e] * mant[m] + 9) / 10;
946 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
947 m = mmc_get_bits(raw_csd, 128, 99, 4);
948 e = mmc_get_bits(raw_csd, 128, 96, 3);
949 csd->tran_speed = exp[e] * 10000 * mant[m];
950 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
951 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
952 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
953 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
954 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
955 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
956 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
957 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
958 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
959 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
960 m = mmc_get_bits(raw_csd, 128, 62, 12);
961 e = mmc_get_bits(raw_csd, 128, 47, 3);
962 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
963 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
964 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
965 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
966 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
967 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
968 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
969 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
970 } else if (v == 1) {
971 m = mmc_get_bits(raw_csd, 128, 115, 4);
972 e = mmc_get_bits(raw_csd, 128, 112, 3);
973 csd->tacc = (exp[e] * mant[m] + 9) / 10;
974 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
975 m = mmc_get_bits(raw_csd, 128, 99, 4);
976 e = mmc_get_bits(raw_csd, 128, 96, 3);
977 csd->tran_speed = exp[e] * 10000 * mant[m];
978 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
979 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
980 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
981 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
982 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
983 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
984 csd->capacity = ((uint64_t)mmc_get_bits(raw_csd, 128, 48, 22) + 1) *
985 512 * 1024;
986 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
987 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
988 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
989 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
990 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
991 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
992 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
993 } else
994 panic("unknown SD CSD version");
995}
996
997static void
998mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd)
999{
1000 int m;
1001 int e;
1002
1003 memset(csd, 0, sizeof(*csd));
1004 csd->csd_structure = mmc_get_bits(raw_csd, 128, 126, 2);
1005 csd->spec_vers = mmc_get_bits(raw_csd, 128, 122, 4);
1006 m = mmc_get_bits(raw_csd, 128, 115, 4);
1007 e = mmc_get_bits(raw_csd, 128, 112, 3);
1008 csd->tacc = exp[e] * mant[m] + 9 / 10;
1009 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
1010 m = mmc_get_bits(raw_csd, 128, 99, 4);
1011 e = mmc_get_bits(raw_csd, 128, 96, 3);
1012 csd->tran_speed = exp[e] * 10000 * mant[m];
1013 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
1014 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
1015 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
1016 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
1017 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
1018 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
1019 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
1020 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
1021 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
1022 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
1023 m = mmc_get_bits(raw_csd, 128, 62, 12);
1024 e = mmc_get_bits(raw_csd, 128, 47, 3);
1025 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
1026 csd->erase_blk_en = 0;
1027 csd->erase_sector = (mmc_get_bits(raw_csd, 128, 42, 5) + 1) *
1028 (mmc_get_bits(raw_csd, 128, 37, 5) + 1);
1029 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 5);
1030 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
1031 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
1032 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
1033 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
1034}
1035
1036static void
1037mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr)
1038{
1039 unsigned int scr_struct;
1040
1041 memset(scr, 0, sizeof(*scr));
1042
1043 scr_struct = mmc_get_bits(raw_scr, 64, 60, 4);
1044 if (scr_struct != 0) {
1045 printf("Unrecognised SCR structure version %d\n",
1046 scr_struct);
1047 return;
1048 }
1049 scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4);
1050 scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4);
1051}
1052
1053static void
1054mmc_app_decode_sd_status(uint32_t *raw_sd_status,
1055 struct mmc_sd_status *sd_status)
1056{
1057
1058 memset(sd_status, 0, sizeof(*sd_status));
1059
1060 sd_status->bus_width = mmc_get_bits(raw_sd_status, 512, 510, 2);
1061 sd_status->secured_mode = mmc_get_bits(raw_sd_status, 512, 509, 1);
1062 sd_status->card_type = mmc_get_bits(raw_sd_status, 512, 480, 16);
1063 sd_status->prot_area = mmc_get_bits(raw_sd_status, 512, 448, 12);
1064 sd_status->speed_class = mmc_get_bits(raw_sd_status, 512, 440, 8);
1065 sd_status->perf_move = mmc_get_bits(raw_sd_status, 512, 432, 8);
1066 sd_status->au_size = mmc_get_bits(raw_sd_status, 512, 428, 4);
1067 sd_status->erase_size = mmc_get_bits(raw_sd_status, 512, 408, 16);
1068 sd_status->erase_timeout = mmc_get_bits(raw_sd_status, 512, 402, 6);
1069 sd_status->erase_offset = mmc_get_bits(raw_sd_status, 512, 400, 2);
1070}
1071
1072static int
1073mmc_all_send_cid(struct mmc_softc *sc, uint32_t *rawcid)
1074{
1075 struct mmc_command cmd;
1076 int err;
1077
1078 memset(&cmd, 0, sizeof(cmd));
1079 cmd.opcode = MMC_ALL_SEND_CID;
1080 cmd.arg = 0;
1081 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
1082 cmd.data = NULL;
1083 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1084 memcpy(rawcid, cmd.resp, 4 * sizeof(uint32_t));
1085 return (err);
1086}
1087
1088static int
1089mmc_send_csd(struct mmc_softc *sc, uint16_t rca, uint32_t *rawcsd)
1090{
1091 struct mmc_command cmd;
1092 int err;
1093
1094 memset(&cmd, 0, sizeof(cmd));
1095 cmd.opcode = MMC_SEND_CSD;
1096 cmd.arg = rca << 16;
1097 cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
1098 cmd.data = NULL;
1099 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1100 memcpy(rawcsd, cmd.resp, 4 * sizeof(uint32_t));
1101 return (err);
1102}
1103
1104static int
1105mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr)
1106{
1107 int err;
1108 struct mmc_command cmd;
1109 struct mmc_data data;
1110
1111 memset(&cmd, 0, sizeof(cmd));
1112 memset(&data, 0, sizeof(data));
1113
1114 memset(rawscr, 0, 8);
1115 cmd.opcode = ACMD_SEND_SCR;
1116 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1117 cmd.arg = 0;
1118 cmd.data = &data;
1119
1120 data.data = rawscr;
1121 data.len = 8;
1122 data.flags = MMC_DATA_READ;
1123
1124 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
1125 rawscr[0] = be32toh(rawscr[0]);
1126 rawscr[1] = be32toh(rawscr[1]);
1127 return (err);
1128}
1129
1130static int
1131mmc_send_ext_csd(struct mmc_softc *sc, uint8_t *rawextcsd)
1132{
1133 int err;
1134 struct mmc_command cmd;
1135 struct mmc_data data;
1136
1137 memset(&cmd, 0, sizeof(cmd));
1138 memset(&data, 0, sizeof(data));
1139
1140 memset(rawextcsd, 0, 512);
1141 cmd.opcode = MMC_SEND_EXT_CSD;
1142 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1143 cmd.arg = 0;
1144 cmd.data = &data;
1145
1146 data.data = rawextcsd;
1147 data.len = 512;
1148 data.flags = MMC_DATA_READ;
1149
1150 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1151 return (err);
1152}
1153
1154static int
1155mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, uint32_t *rawsdstatus)
1156{
1157 int err, i;
1158 struct mmc_command cmd;
1159 struct mmc_data data;
1160
1161 memset(&cmd, 0, sizeof(cmd));
1162 memset(&data, 0, sizeof(data));
1163
1164 memset(rawsdstatus, 0, 64);
1165 cmd.opcode = ACMD_SD_STATUS;
1166 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1167 cmd.arg = 0;
1168 cmd.data = &data;
1169
1170 data.data = rawsdstatus;
1171 data.len = 64;
1172 data.flags = MMC_DATA_READ;
1173
1174 err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
1175 for (i = 0; i < 16; i++)
1176 rawsdstatus[i] = be32toh(rawsdstatus[i]);
1177 return (err);
1178}
1179
1180static int
1181mmc_set_relative_addr(struct mmc_softc *sc, uint16_t resp)
1182{
1183 struct mmc_command cmd;
1184 int err;
1185
1186 memset(&cmd, 0, sizeof(cmd));
1187 cmd.opcode = MMC_SET_RELATIVE_ADDR;
1188 cmd.arg = resp << 16;
1189 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
1190 cmd.data = NULL;
1191 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1192 return (err);
1193}
1194
1195static int
1196mmc_send_relative_addr(struct mmc_softc *sc, uint32_t *resp)
1197{
1198 struct mmc_command cmd;
1199 int err;
1200
1201 memset(&cmd, 0, sizeof(cmd));
1202 cmd.opcode = SD_SEND_RELATIVE_ADDR;
1203 cmd.arg = 0;
1204 cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
1205 cmd.data = NULL;
1206 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1207 *resp = cmd.resp[0];
1208 return (err);
1209}
1210
1211static int
1212mmc_send_status(struct mmc_softc *sc, uint16_t rca, uint32_t *status)
1213{
1214 struct mmc_command cmd;
1215 int err;
1216
1217 memset(&cmd, 0, sizeof(cmd));
1218 cmd.opcode = MMC_SEND_STATUS;
1219 cmd.arg = rca << 16;
1220 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
1221 cmd.data = NULL;
1222 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1223 *status = cmd.resp[0];
1224 return (err);
1225}
1226
1227static int
1228mmc_set_blocklen(struct mmc_softc *sc, uint32_t len)
1229{
1230 struct mmc_command cmd;
1231 int err;
1232
1233 memset(&cmd, 0, sizeof(cmd));
1234 cmd.opcode = MMC_SET_BLOCKLEN;
1235 cmd.arg = len;
1236 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
1237 cmd.data = NULL;
1238 err = mmc_wait_for_cmd(sc, &cmd, CMD_RETRIES);
1239 return (err);
1240}
1241
1242static void
1243mmc_log_card(device_t dev, struct mmc_ivars *ivar, int newcard)
1244{
1245 device_printf(dev, "Card at relative address 0x%04x%s:\n",
1246 ivar->rca, newcard ? " added" : "");
1247 device_printf(dev, " card: %s\n", ivar->card_id_string);
1248 device_printf(dev, " bus: %ubit, %uMHz%s\n",
1249 (ivar->bus_width == bus_width_1 ? 1 :
1250 (ivar->bus_width == bus_width_4 ? 4 : 8)),
1251 (ivar->timing == bus_timing_hs ?
1252 ivar->hs_tran_speed : ivar->tran_speed) / 1000000,
1253 ivar->timing == bus_timing_hs ? ", high speed timing" : "");
1254 device_printf(dev, " memory: %u blocks, erase sector %u blocks%s\n",
1255 ivar->sec_count, ivar->erase_sector,
1256 ivar->read_only ? ", read-only" : "");
1257}
1258
1259static void
1260mmc_discover_cards(struct mmc_softc *sc)
1261{
1262 struct mmc_ivars *ivar = NULL;
1263 device_t *devlist;
1264 int err, i, devcount, newcard;
1265 uint32_t raw_cid[4], resp, sec_count, status;
1266 device_t child;
1267 uint16_t rca = 2;
1268 u_char switch_res[64];
1269
1270 if (bootverbose || mmc_debug)
1271 device_printf(sc->dev, "Probing cards\n");
1272 while (1) {
1273 err = mmc_all_send_cid(sc, raw_cid);
1274 if (err == MMC_ERR_TIMEOUT)
1275 break;
1276 if (err != MMC_ERR_NONE) {
1277 device_printf(sc->dev, "Error reading CID %d\n", err);
1278 break;
1279 }
1280 newcard = 1;
1281 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
1282 return;
1283 for (i = 0; i < devcount; i++) {
1284 ivar = device_get_ivars(devlist[i]);
1285 if (memcmp(ivar->raw_cid, raw_cid, sizeof(raw_cid)) == 0) {
1286 newcard = 0;
1287 break;
1288 }
1289 }
1290 free(devlist, M_TEMP);
1291 if (bootverbose || mmc_debug) {
1292 device_printf(sc->dev, "%sard detected (CID %08x%08x%08x%08x)\n",
1293 newcard ? "New c" : "C",
1294 raw_cid[0], raw_cid[1], raw_cid[2], raw_cid[3]);
1295 }
1296 if (newcard) {
1297 ivar = malloc(sizeof(struct mmc_ivars), M_DEVBUF,
1298 M_WAITOK | M_ZERO);
1299 memcpy(ivar->raw_cid, raw_cid, sizeof(raw_cid));
1300 }
1301 if (mmcbr_get_ro(sc->dev))
1302 ivar->read_only = 1;
1303 ivar->bus_width = bus_width_1;
1304 ivar->timing = bus_timing_normal;
1305 ivar->mode = mmcbr_get_mode(sc->dev);
1306 if (ivar->mode == mode_sd) {
1307 mmc_decode_cid_sd(ivar->raw_cid, &ivar->cid);
1308 mmc_send_relative_addr(sc, &resp);
1309 ivar->rca = resp >> 16;
1310 /* Get card CSD. */
1311 mmc_send_csd(sc, ivar->rca, ivar->raw_csd);
1312 if (bootverbose || mmc_debug)
1313 device_printf(sc->dev,
1314 "%sard detected (CSD %08x%08x%08x%08x)\n",
1315 newcard ? "New c" : "C", ivar->raw_csd[0],
1316 ivar->raw_csd[1], ivar->raw_csd[2],
1317 ivar->raw_csd[3]);
1318 mmc_decode_csd_sd(ivar->raw_csd, &ivar->csd);
1319 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE;
1320 if (ivar->csd.csd_structure > 0)
1321 ivar->high_cap = 1;
1322 ivar->tran_speed = ivar->csd.tran_speed;
1323 ivar->erase_sector = ivar->csd.erase_sector *
1324 ivar->csd.write_bl_len / MMC_SECTOR_SIZE;
1325
1326 err = mmc_send_status(sc, ivar->rca, &status);
1327 if (err != MMC_ERR_NONE) {
1328 device_printf(sc->dev,
1329 "Error reading card status %d\n", err);
1330 break;
1331 }
1332 if ((status & R1_CARD_IS_LOCKED) != 0) {
1333 device_printf(sc->dev,
1334 "Card is password protected, skipping.\n");
1335 break;
1336 }
1337
1338 /* Get card SCR. Card must be selected to fetch it. */
1339 mmc_select_card(sc, ivar->rca);
1340 mmc_app_send_scr(sc, ivar->rca, ivar->raw_scr);
1341 mmc_app_decode_scr(ivar->raw_scr, &ivar->scr);
1342 /* Get card switch capabilities (command class 10). */
1343 if ((ivar->scr.sda_vsn >= 1) &&
1344 (ivar->csd.ccc & (1<<10))) {
1345 mmc_sd_switch(sc, SD_SWITCH_MODE_CHECK,
1346 SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE,
1347 switch_res);
1348 if (switch_res[13] & 2) {
1349 ivar->timing = bus_timing_hs;
1350 ivar->hs_tran_speed = SD_MAX_HS;
1351 }
1352 }
1353 mmc_app_sd_status(sc, ivar->rca, ivar->raw_sd_status);
1354 mmc_app_decode_sd_status(ivar->raw_sd_status,
1355 &ivar->sd_status);
1356 if (ivar->sd_status.au_size != 0) {
1357 ivar->erase_sector =
1358 16 << ivar->sd_status.au_size;
1359 }
1360 mmc_select_card(sc, 0);
1361 /* Find max supported bus width. */
1362 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_4_BIT_DATA) &&
1363 (ivar->scr.bus_widths & SD_SCR_BUS_WIDTH_4))
1364 ivar->bus_width = bus_width_4;
1365
1366 /*
1367 * Some cards that report maximum I/O block sizes
1368 * greater than 512 require the block length to be
1369 * set to 512, even though that is supposed to be
1370 * the default. Example:
1371 *
1372 * Transcend 2GB SDSC card, CID:
1373 * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000
1374 */
1375 if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE ||
1376 ivar->csd.write_bl_len != MMC_SECTOR_SIZE)
1377 mmc_set_blocklen(sc, MMC_SECTOR_SIZE);
1378
1379 mmc_format_card_id_string(ivar);
1380
1381 if (bootverbose || mmc_debug)
1382 mmc_log_card(sc->dev, ivar, newcard);
1383 if (newcard) {
1384 /* Add device. */
1385 child = device_add_child(sc->dev, NULL, -1);
1386 device_set_ivars(child, ivar);
1387 }
1388 return;
1389 }
1390 mmc_decode_cid_mmc(ivar->raw_cid, &ivar->cid);
1391 ivar->rca = rca++;
1392 mmc_set_relative_addr(sc, ivar->rca);
1393 /* Get card CSD. */
1394 mmc_send_csd(sc, ivar->rca, ivar->raw_csd);
1395 if (bootverbose || mmc_debug)
1396 device_printf(sc->dev,
1397 "%sard detected (CSD %08x%08x%08x%08x)\n",
1398 newcard ? "New c" : "C", ivar->raw_csd[0],
1399 ivar->raw_csd[1], ivar->raw_csd[2],
1400 ivar->raw_csd[3]);
1401
1402 mmc_decode_csd_mmc(ivar->raw_csd, &ivar->csd);
1403 ivar->sec_count = ivar->csd.capacity / MMC_SECTOR_SIZE;
1404 ivar->tran_speed = ivar->csd.tran_speed;
1405 ivar->erase_sector = ivar->csd.erase_sector *
1406 ivar->csd.write_bl_len / MMC_SECTOR_SIZE;
1407
1408 err = mmc_send_status(sc, ivar->rca, &status);
1409 if (err != MMC_ERR_NONE) {
1410 device_printf(sc->dev,
1411 "Error reading card status %d\n", err);
1412 break;
1413 }
1414 if ((status & R1_CARD_IS_LOCKED) != 0) {
1415 device_printf(sc->dev,
1416 "Card is password protected, skipping.\n");
1417 break;
1418 }
1419
1420 /* Only MMC >= 4.x cards support EXT_CSD. */
1421 if (ivar->csd.spec_vers >= 4) {
1422 /* Card must be selected to fetch EXT_CSD. */
1423 mmc_select_card(sc, ivar->rca);
1424 mmc_send_ext_csd(sc, ivar->raw_ext_csd);
1425 /* Handle extended capacity from EXT_CSD */
1426 sec_count = ivar->raw_ext_csd[EXT_CSD_SEC_CNT] +
1427 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) +
1428 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) +
1429 (ivar->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1430 if (sec_count != 0) {
1431 ivar->sec_count = sec_count;
1432 ivar->high_cap = 1;
1433 }
1434 /* Get card speed in high speed mode. */
1435 ivar->timing = bus_timing_hs;
1436 if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE]
1437 & EXT_CSD_CARD_TYPE_52)
1438 ivar->hs_tran_speed = MMC_TYPE_52_MAX_HS;
1439 else if (ivar->raw_ext_csd[EXT_CSD_CARD_TYPE]
1440 & EXT_CSD_CARD_TYPE_26)
1441 ivar->hs_tran_speed = MMC_TYPE_26_MAX_HS;
1442 else
1443 ivar->hs_tran_speed = ivar->tran_speed;
1444 /* Find max supported bus width. */
1445 ivar->bus_width = mmc_test_bus_width(sc);
1446 mmc_select_card(sc, 0);
1447 /* Handle HC erase sector size. */
1448 if (ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE] != 0) {
1449 ivar->erase_sector = 1024 *
1450 ivar->raw_ext_csd[EXT_CSD_ERASE_GRP_SIZE];
1451 mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL,
1452 EXT_CSD_ERASE_GRP_DEF, 1);
1453 }
1454 } else {
1455 ivar->bus_width = bus_width_1;
1456 ivar->timing = bus_timing_normal;
1457 }
1458
1459 /*
1460 * Some cards that report maximum I/O block sizes greater
1461 * than 512 require the block length to be set to 512, even
1462 * though that is supposed to be the default. Example:
1463 *
1464 * Transcend 2GB SDSC card, CID:
1465 * mid=0x1b oid=0x534d pnm="00000" prv=1.0 mdt=00.2000
1466 */
1467 if (ivar->csd.read_bl_len != MMC_SECTOR_SIZE ||
1468 ivar->csd.write_bl_len != MMC_SECTOR_SIZE)
1469 mmc_set_blocklen(sc, MMC_SECTOR_SIZE);
1470
1471 mmc_format_card_id_string(ivar);
1472
1473 if (bootverbose || mmc_debug)
1474 mmc_log_card(sc->dev, ivar, newcard);
1475 if (newcard) {
1476 /* Add device. */
1477 child = device_add_child(sc->dev, NULL, -1);
1478 device_set_ivars(child, ivar);
1479 }
1480 }
1481}
1482
1483static void
1484mmc_rescan_cards(struct mmc_softc *sc)
1485{
1486 struct mmc_ivars *ivar = NULL;
1487 device_t *devlist;
1488 int err, i, devcount;
1489
1490 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
1491 return;
1492 for (i = 0; i < devcount; i++) {
1493 ivar = device_get_ivars(devlist[i]);
1494 if (mmc_select_card(sc, ivar->rca)) {
1495 if (bootverbose || mmc_debug)
1496 device_printf(sc->dev, "Card at relative address %d lost.\n",
1497 ivar->rca);
1498 device_delete_child(sc->dev, devlist[i]);
1499 free(ivar, M_DEVBUF);
1500 }
1501 }
1502 free(devlist, M_TEMP);
1503 mmc_select_card(sc, 0);
1504}
1505
1506static int
1507mmc_delete_cards(struct mmc_softc *sc)
1508{
1509 struct mmc_ivars *ivar;
1510 device_t *devlist;
1511 int err, i, devcount;
1512
1513 if ((err = device_get_children(sc->dev, &devlist, &devcount)) != 0)
1514 return (err);
1515 for (i = 0; i < devcount; i++) {
1516 ivar = device_get_ivars(devlist[i]);
1517 if (bootverbose || mmc_debug)
1518 device_printf(sc->dev, "Card at relative address %d deleted.\n",
1519 ivar->rca);
1520 device_delete_child(sc->dev, devlist[i]);
1521 free(ivar, M_DEVBUF);
1522 }
1523 free(devlist, M_TEMP);
1524 return (0);
1525}
1526
1527static void
1528mmc_go_discovery(struct mmc_softc *sc)
1529{
1530 uint32_t ocr;
1531 device_t dev;
1532 int err;
1533
1534 dev = sc->dev;
1535 if (mmcbr_get_power_mode(dev) != power_on) {
1536 /*
1537 * First, try SD modes
1538 */
1539 mmcbr_set_mode(dev, mode_sd);
1540 mmc_power_up(sc);
1541 mmcbr_set_bus_mode(dev, pushpull);
1542 if (bootverbose || mmc_debug)
1543 device_printf(sc->dev, "Probing bus\n");
1544 mmc_idle_cards(sc);
1545 err = mmc_send_if_cond(sc, 1);
1546 if ((bootverbose || mmc_debug) && err == 0)
1547 device_printf(sc->dev, "SD 2.0 interface conditions: OK\n");
1548 if (mmc_send_app_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) {
1549 if (bootverbose || mmc_debug)
1550 device_printf(sc->dev, "SD probe: failed\n");
1551 /*
1552 * Failed, try MMC
1553 */
1554 mmcbr_set_mode(dev, mode_mmc);
1555 if (mmc_send_op_cond(sc, 0, &ocr) != MMC_ERR_NONE) {
1556 if (bootverbose || mmc_debug)
1557 device_printf(sc->dev, "MMC probe: failed\n");
1558 ocr = 0; /* Failed both, powerdown. */
1559 } else if (bootverbose || mmc_debug)
1560 device_printf(sc->dev,
1561 "MMC probe: OK (OCR: 0x%08x)\n", ocr);
1562 } else if (bootverbose || mmc_debug)
1563 device_printf(sc->dev, "SD probe: OK (OCR: 0x%08x)\n", ocr);
1564
1565 mmcbr_set_ocr(dev, mmc_select_vdd(sc, ocr));
1566 if (mmcbr_get_ocr(dev) != 0)
1567 mmc_idle_cards(sc);
1568 } else {
1569 mmcbr_set_bus_mode(dev, opendrain);
1570 mmcbr_set_clock(dev, CARD_ID_FREQUENCY);
1571 mmcbr_update_ios(dev);
1572 /* XXX recompute vdd based on new cards? */
1573 }
1574 /*
1575 * Make sure that we have a mutually agreeable voltage to at least
1576 * one card on the bus.
1577 */
1578 if (bootverbose || mmc_debug)
1579 device_printf(sc->dev, "Current OCR: 0x%08x\n", mmcbr_get_ocr(dev));
1580 if (mmcbr_get_ocr(dev) == 0) {
1581 device_printf(sc->dev, "No compatible cards found on bus\n");
1582 mmc_delete_cards(sc);
1583 mmc_power_down(sc);
1584 return;
1585 }
1586 /*
1587 * Reselect the cards after we've idled them above.
1588 */
1589 if (mmcbr_get_mode(dev) == mode_sd) {
1590 err = mmc_send_if_cond(sc, 1);
1591 mmc_send_app_op_cond(sc,
1592 (err ? 0 : MMC_OCR_CCS) | mmcbr_get_ocr(dev), NULL);
1593 } else
1594 mmc_send_op_cond(sc, mmcbr_get_ocr(dev), NULL);
1595 mmc_discover_cards(sc);
1596 mmc_rescan_cards(sc);
1597
1598 mmcbr_set_bus_mode(dev, pushpull);
1599 mmcbr_update_ios(dev);
1600 mmc_calculate_clock(sc);
1601 bus_generic_attach(dev);
1602/* mmc_update_children_sysctl(dev);*/
1603}
1604
1605static int
1606mmc_calculate_clock(struct mmc_softc *sc)
1607{
1608 int max_dtr, max_hs_dtr, max_timing;
1609 int nkid, i, f_max;
1610 device_t *kids;
1611 struct mmc_ivars *ivar;
1612
1613 f_max = mmcbr_get_f_max(sc->dev);
1614 max_dtr = max_hs_dtr = f_max;
1615 if ((mmcbr_get_caps(sc->dev) & MMC_CAP_HSPEED))
1616 max_timing = bus_timing_hs;
1617 else
1618 max_timing = bus_timing_normal;
1619 if (device_get_children(sc->dev, &kids, &nkid) != 0)
1620 panic("can't get children");
1621 for (i = 0; i < nkid; i++) {
1622 ivar = device_get_ivars(kids[i]);
1623 if (ivar->timing < max_timing)
1624 max_timing = ivar->timing;
1625 if (ivar->tran_speed < max_dtr)
1626 max_dtr = ivar->tran_speed;
1627 if (ivar->hs_tran_speed < max_hs_dtr)
1628 max_hs_dtr = ivar->hs_tran_speed;
1629 }
1630 for (i = 0; i < nkid; i++) {
1631 ivar = device_get_ivars(kids[i]);
1632 if (ivar->timing == bus_timing_normal)
1633 continue;
1634 mmc_select_card(sc, ivar->rca);
1635 mmc_set_timing(sc, max_timing);
1636 }
1637 mmc_select_card(sc, 0);
1638 free(kids, M_TEMP);
1639 if (max_timing == bus_timing_hs)
1640 max_dtr = max_hs_dtr;
1641 if (bootverbose || mmc_debug) {
1642 device_printf(sc->dev,
1643 "setting transfer rate to %d.%03dMHz%s\n",
1644 max_dtr / 1000000, (max_dtr / 1000) % 1000,
1645 max_timing == bus_timing_hs ? " (high speed timing)" : "");
1646 }
1647 mmcbr_set_timing(sc->dev, max_timing);
1648 mmcbr_set_clock(sc->dev, max_dtr);
1649 mmcbr_update_ios(sc->dev);
1650 return max_dtr;
1651}
1652
1653static void
1654mmc_scan(struct mmc_softc *sc)
1655{
1656 device_t dev = sc->dev;
1657
1658 mmc_acquire_bus(dev, dev);
1659 mmc_go_discovery(sc);
1660 mmc_release_bus(dev, dev);
1661}
1662
1663static int
1664mmc_read_ivar(device_t bus, device_t child, int which, uintptr_t *result)
1665{
1666 struct mmc_ivars *ivar = device_get_ivars(child);
1667
1668 switch (which) {
1669 default:
1670 return (EINVAL);
1671 case MMC_IVAR_DSR_IMP:
1672 *result = ivar->csd.dsr_imp;
1673 break;
1674 case MMC_IVAR_MEDIA_SIZE:
1675 *result = ivar->sec_count;
1676 break;
1677 case MMC_IVAR_RCA:
1678 *result = ivar->rca;
1679 break;
1680 case MMC_IVAR_SECTOR_SIZE:
1681 *result = MMC_SECTOR_SIZE;
1682 break;
1683 case MMC_IVAR_TRAN_SPEED:
1684 *result = mmcbr_get_clock(bus);
1685 break;
1686 case MMC_IVAR_READ_ONLY:
1687 *result = ivar->read_only;
1688 break;
1689 case MMC_IVAR_HIGH_CAP:
1690 *result = ivar->high_cap;
1691 break;
1692 case MMC_IVAR_CARD_TYPE:
1693 *result = ivar->mode;
1694 break;
1695 case MMC_IVAR_BUS_WIDTH:
1696 *result = ivar->bus_width;
1697 break;
1698 case MMC_IVAR_ERASE_SECTOR:
1699 *result = ivar->erase_sector;
1700 break;
1701 case MMC_IVAR_MAX_DATA:
1702 *result = mmcbr_get_max_data(bus);
1703 break;
1704 case MMC_IVAR_CARD_ID_STRING:
1705 *(char **)result = ivar->card_id_string;
1706 break;
1707 case MMC_IVAR_CARD_SN_STRING:
1708 *(char **)result = ivar->card_sn_string;
1709 break;
1710 }
1711 return (0);
1712}
1713
1714static int
1715mmc_write_ivar(device_t bus, device_t child, int which, uintptr_t value)
1716{
1717 /*
1718 * None are writable ATM
1719 */
1720 return (EINVAL);
1721}
1722
1723static void
1724mmc_delayed_attach(void *xsc)
1725{
1726 struct mmc_softc *sc = xsc;
1727
1728 mmc_scan(sc);
1729 config_intrhook_disestablish(&sc->config_intrhook);
1730}
1731
1732static int
1733mmc_child_location_str(device_t dev, device_t child, char *buf,
1734 size_t buflen)
1735{
1736
1737 snprintf(buf, buflen, "rca=0x%04x", mmc_get_rca(child));
1738 return (0);
1739}
1740
1741static device_method_t mmc_methods[] = {
1742 /* device_if */
1743 DEVMETHOD(device_probe, mmc_probe),
1744 DEVMETHOD(device_attach, mmc_attach),
1745 DEVMETHOD(device_detach, mmc_detach),
1746 DEVMETHOD(device_suspend, mmc_suspend),
1747 DEVMETHOD(device_resume, mmc_resume),
1748
1749 /* Bus interface */
1750 DEVMETHOD(bus_read_ivar, mmc_read_ivar),
1751 DEVMETHOD(bus_write_ivar, mmc_write_ivar),
1752 DEVMETHOD(bus_child_location_str, mmc_child_location_str),
1753
1754 /* MMC Bus interface */
1755 DEVMETHOD(mmcbus_wait_for_request, mmc_wait_for_request),
1756 DEVMETHOD(mmcbus_acquire_bus, mmc_acquire_bus),
1757 DEVMETHOD(mmcbus_release_bus, mmc_release_bus),
1758
1759 DEVMETHOD_END
1760};
1761
1762static driver_t mmc_driver = {
1763 "mmc",
1764 mmc_methods,
1765 sizeof(struct mmc_softc),
1766};
1767static devclass_t mmc_devclass;
1768
1769DRIVER_MODULE(mmc, at91_mci, mmc_driver, mmc_devclass, NULL, NULL);
1770DRIVER_MODULE(mmc, sdhci_bcm, mmc_driver, mmc_devclass, NULL, NULL);
1771DRIVER_MODULE(mmc, sdhci_fdt, mmc_driver, mmc_devclass, NULL, NULL);
1772DRIVER_MODULE(mmc, sdhci_imx, mmc_driver, mmc_devclass, NULL, NULL);
1773DRIVER_MODULE(mmc, sdhci_pci, mmc_driver, mmc_devclass, NULL, NULL);
1774DRIVER_MODULE(mmc, sdhci_ti, mmc_driver, mmc_devclass, NULL, NULL);
1775DRIVER_MODULE(mmc, ti_mmchs, mmc_driver, mmc_devclass, NULL, NULL);
|