1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2006 Bernd Walter <tisco@FreeBSD.org> All rights reserved.
5 * Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org> All rights reserved.
6 * Copyright (c) 2015-2017 Ilya Bakulin <kibab@FreeBSD.org> All rights reserved.
7 * Copyright (c) 2006 M. Warner Losh <imp@FreeBSD.org>
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer,
14 * without modification, immediately at the beginning of the file.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 * Some code derived from the sys/dev/mmc and sys/cam/ata
31 * Thanks to Warner Losh <imp@FreeBSD.org>, Alexander Motin <mav@FreeBSD.org>
32 * Bernd Walter <tisco@FreeBSD.org>, and other authors.
33 */
34
35 //#include "opt_sdda.h"
36
37 #include <sys/param.h>
38
39 #ifdef _KERNEL
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/bio.h>
43 #include <sys/sysctl.h>
44 #include <sys/endian.h>
45 #include <sys/taskqueue.h>
46 #include <sys/lock.h>
47 #include <sys/mutex.h>
48 #include <sys/conf.h>
49 #include <sys/devicestat.h>
50 #include <sys/eventhandler.h>
51 #include <sys/malloc.h>
52 #include <sys/cons.h>
53 #include <sys/proc.h>
54 #include <sys/reboot.h>
55 #include <geom/geom_disk.h>
56 #include <machine/_inttypes.h> /* for PRIu64 */
57 #endif /* _KERNEL */
58
59 #ifndef _KERNEL
60 #include <stdio.h>
61 #include <string.h>
62 #endif /* _KERNEL */
63
64 #include <cam/cam.h>
65 #include <cam/cam_ccb.h>
66 #include <cam/cam_queue.h>
67 #include <cam/cam_periph.h>
68 #include <cam/cam_sim.h>
69 #include <cam/cam_xpt.h>
70 #include <cam/cam_xpt_sim.h>
71 #include <cam/cam_xpt_periph.h>
72 #include <cam/cam_xpt_internal.h>
73 #include <cam/cam_debug.h>
74
75 #include <cam/mmc/mmc_all.h>
76
77 #ifdef _KERNEL
78
79 typedef enum {
80 SDDA_FLAG_OPEN = 0x0002,
81 SDDA_FLAG_DIRTY = 0x0004
82 } sdda_flags;
83
84 typedef enum {
85 SDDA_STATE_INIT,
86 SDDA_STATE_INVALID,
87 SDDA_STATE_NORMAL,
88 SDDA_STATE_PART_SWITCH,
89 } sdda_state;
90
91 /* Purposefully ignore a '%d' argument to snprintf in SDDA_FMT! */
92 #define SDDA_FMT "%s"
93 #define SDDA_FMT_BOOT "%s%dboot"
94 #define SDDA_FMT_GP "%s%dgp"
95 #define SDDA_FMT_RPMB "%s%drpmb"
96 #define SDDA_LABEL_ENH "enh"
97
98 #define SDDA_PART_NAMELEN (16 + 1)
99
100 struct sdda_softc;
101
102 struct sdda_part {
103 struct disk *disk;
104 struct bio_queue_head bio_queue;
105 sdda_flags flags;
106 struct sdda_softc *sc;
107 u_int cnt;
108 u_int type;
109 bool ro;
110 char name[SDDA_PART_NAMELEN];
111 };
112
113 struct sdda_softc {
114 int outstanding_cmds; /* Number of active commands */
115 int refcount; /* Active xpt_action() calls */
116 sdda_state state;
117 struct mmc_data *mmcdata;
118 struct cam_periph *periph;
119 // sdda_quirks quirks;
120 struct task start_init_task;
121 uint32_t raw_csd[4];
122 uint8_t raw_ext_csd[512]; /* MMC only? */
123 struct mmc_csd csd;
124 struct mmc_cid cid;
125 struct mmc_scr scr;
126 /* Calculated from CSD */
127 uint64_t sector_count;
128 uint64_t mediasize;
129
130 /* Calculated from CID */
131 char card_id_string[64];/* Formatted CID info (serial, MFG, etc) */
132 char card_sn_string[16];/* Formatted serial # for disk->d_ident */
133 /* Determined from CSD + is highspeed card*/
134 uint32_t card_f_max;
135
136 /* Generic switch timeout */
137 uint32_t cmd6_time;
138 uint32_t timings; /* Mask of bus timings supported */
139 uint32_t vccq_120; /* Mask of bus timings at VCCQ of 1.2 V */
140 uint32_t vccq_180; /* Mask of bus timings at VCCQ of 1.8 V */
141 /* MMC partitions support */
142 struct sdda_part *part[MMC_PART_MAX];
143 uint8_t part_curr; /* Partition currently switched to */
144 uint8_t part_requested; /* What partition we're currently switching to */
145 uint32_t part_time; /* Partition switch timeout [us] */
146 off_t enh_base; /* Enhanced user data area slice base ... */
147 off_t enh_size; /* ... and size [bytes] */
148 int log_count;
149 struct timeval log_time;
150 };
151
152 static const char *mmc_errmsg[] =
153 {
154 "None",
155 "Timeout",
156 "Bad CRC",
157 "Fifo",
158 "Failed",
159 "Invalid",
160 "NO MEMORY"
161 };
162
163 #define ccb_bp ppriv_ptr1
164
165 static disk_strategy_t sddastrategy;
166 static dumper_t sddadump;
167 static periph_init_t sddainit;
168 static void sddaasync(void *callback_arg, uint32_t code,
169 struct cam_path *path, void *arg);
170 static periph_ctor_t sddaregister;
171 static periph_dtor_t sddacleanup;
172 static periph_start_t sddastart;
173 static periph_oninv_t sddaoninvalidate;
174 static void sddadone(struct cam_periph *periph,
175 union ccb *done_ccb);
176 static int sddaerror(union ccb *ccb, uint32_t cam_flags,
177 uint32_t sense_flags);
178
179 static int mmc_handle_reply(union ccb *ccb);
180 static uint16_t get_rca(struct cam_periph *periph);
181 static void sdda_start_init(void *context, union ccb *start_ccb);
182 static void sdda_start_init_task(void *context, int pending);
183 static void sdda_process_mmc_partitions(struct cam_periph *periph, union ccb *start_ccb);
184 static uint32_t sdda_get_host_caps(struct cam_periph *periph, union ccb *ccb);
185 static int mmc_select_card(struct cam_periph *periph, union ccb *ccb, uint32_t rca);
mmc_get_sector_size(struct cam_periph * periph)186 static inline uint32_t mmc_get_sector_size(struct cam_periph *periph) {return MMC_SECTOR_SIZE;}
187
188 static SYSCTL_NODE(_kern_cam, OID_AUTO, sdda, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
189 "CAM Direct Access Disk driver");
190
191 static int sdda_mmcsd_compat = 1;
192 SYSCTL_INT(_kern_cam_sdda, OID_AUTO, mmcsd_compat, CTLFLAG_RDTUN,
193 &sdda_mmcsd_compat, 1, "Enable creation of mmcsd aliases.");
194
195 /* TODO: actually issue GET_TRAN_SETTINGS to get R/O status */
sdda_get_read_only(struct cam_periph * periph,union ccb * start_ccb)196 static inline bool sdda_get_read_only(struct cam_periph *periph, union ccb *start_ccb)
197 {
198
199 return (false);
200 }
201
202 static uint32_t mmc_get_spec_vers(struct cam_periph *periph);
203 static uint64_t mmc_get_media_size(struct cam_periph *periph);
204 static uint32_t mmc_get_cmd6_timeout(struct cam_periph *periph);
205 static bool sdda_add_part(struct cam_periph *periph, u_int type,
206 const char *name, u_int cnt, off_t media_size, bool ro);
207
208 static struct periph_driver sddadriver =
209 {
210 sddainit, "sdda",
211 TAILQ_HEAD_INITIALIZER(sddadriver.units), /* generation */ 0
212 };
213
214 PERIPHDRIVER_DECLARE(sdda, sddadriver);
215
216 static MALLOC_DEFINE(M_SDDA, "sd_da", "sd_da buffers");
217
218 static const int exp[8] = {
219 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
220 };
221
222 static const int mant[16] = {
223 0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80
224 };
225
226 static const int cur_min[8] = {
227 500, 1000, 5000, 10000, 25000, 35000, 60000, 100000
228 };
229
230 static const int cur_max[8] = {
231 1000, 5000, 10000, 25000, 35000, 45000, 800000, 200000
232 };
233
234 static uint16_t
get_rca(struct cam_periph * periph)235 get_rca(struct cam_periph *periph) {
236 return periph->path->device->mmc_ident_data.card_rca;
237 }
238
239 /*
240 * Figure out if CCB execution resulted in error.
241 * Look at both CAM-level errors and on MMC protocol errors.
242 *
243 * Return value is always MMC error.
244 */
245 static int
mmc_handle_reply(union ccb * ccb)246 mmc_handle_reply(union ccb *ccb)
247 {
248 KASSERT(ccb->ccb_h.func_code == XPT_MMC_IO,
249 ("ccb %p: cannot handle non-XPT_MMC_IO errors, got func_code=%d",
250 ccb, ccb->ccb_h.func_code));
251
252 /* CAM-level error should always correspond to MMC-level error */
253 if (((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) &&
254 (ccb->mmcio.cmd.error != MMC_ERR_NONE))
255 panic("CCB status is OK but MMC error != MMC_ERR_NONE");
256
257 if (ccb->mmcio.cmd.error != MMC_ERR_NONE) {
258 xpt_print_path(ccb->ccb_h.path);
259 printf("CMD%d failed, err %d (%s)\n",
260 ccb->mmcio.cmd.opcode,
261 ccb->mmcio.cmd.error,
262 mmc_errmsg[ccb->mmcio.cmd.error]);
263 }
264 return (ccb->mmcio.cmd.error);
265 }
266
267 static uint32_t
mmc_get_bits(uint32_t * bits,int bit_len,int start,int size)268 mmc_get_bits(uint32_t *bits, int bit_len, int start, int size)
269 {
270 const int i = (bit_len / 32) - (start / 32) - 1;
271 const int shift = start & 31;
272 uint32_t retval = bits[i] >> shift;
273 if (size + shift > 32)
274 retval |= bits[i - 1] << (32 - shift);
275 return (retval & ((1llu << size) - 1));
276 }
277
278 static void
mmc_decode_csd_sd(uint32_t * raw_csd,struct mmc_csd * csd)279 mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd)
280 {
281 int v;
282 int m;
283 int e;
284
285 memset(csd, 0, sizeof(*csd));
286 csd->csd_structure = v = mmc_get_bits(raw_csd, 128, 126, 2);
287
288 /* Common members between 1.0 and 2.0 */
289 m = mmc_get_bits(raw_csd, 128, 115, 4);
290 e = mmc_get_bits(raw_csd, 128, 112, 3);
291 csd->tacc = (exp[e] * mant[m] + 9) / 10;
292 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
293 m = mmc_get_bits(raw_csd, 128, 99, 4);
294 e = mmc_get_bits(raw_csd, 128, 96, 3);
295 csd->tran_speed = exp[e] * 10000 * mant[m];
296 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
297 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
298 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
299 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
300 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
301 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
302 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
303 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
304 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
305 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
306 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
307 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
308 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
309
310 if (v == 0) {
311 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
312 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
313 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
314 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
315 m = mmc_get_bits(raw_csd, 128, 62, 12);
316 e = mmc_get_bits(raw_csd, 128, 47, 3);
317 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
318 } else if (v == 1) {
319 csd->capacity = ((uint64_t)mmc_get_bits(raw_csd, 128, 48, 22) + 1) *
320 512 * 1024;
321 } else
322 panic("unknown SD CSD version");
323 }
324
325 static void
mmc_decode_csd_mmc(uint32_t * raw_csd,struct mmc_csd * csd)326 mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd)
327 {
328 int m;
329 int e;
330
331 memset(csd, 0, sizeof(*csd));
332 csd->csd_structure = mmc_get_bits(raw_csd, 128, 126, 2);
333 csd->spec_vers = mmc_get_bits(raw_csd, 128, 122, 4);
334 m = mmc_get_bits(raw_csd, 128, 115, 4);
335 e = mmc_get_bits(raw_csd, 128, 112, 3);
336 csd->tacc = exp[e] * mant[m] + 9 / 10;
337 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
338 m = mmc_get_bits(raw_csd, 128, 99, 4);
339 e = mmc_get_bits(raw_csd, 128, 96, 3);
340 csd->tran_speed = exp[e] * 10000 * mant[m];
341 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
342 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
343 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
344 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
345 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
346 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
347 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
348 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
349 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
350 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
351 m = mmc_get_bits(raw_csd, 128, 62, 12);
352 e = mmc_get_bits(raw_csd, 128, 47, 3);
353 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
354 csd->erase_blk_en = 0;
355 csd->erase_sector = (mmc_get_bits(raw_csd, 128, 42, 5) + 1) *
356 (mmc_get_bits(raw_csd, 128, 37, 5) + 1);
357 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 5);
358 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
359 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
360 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
361 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
362 }
363
364 static void
mmc_decode_cid_sd(uint32_t * raw_cid,struct mmc_cid * cid)365 mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid)
366 {
367 int i;
368
369 /* There's no version info, so we take it on faith */
370 memset(cid, 0, sizeof(*cid));
371 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
372 cid->oid = mmc_get_bits(raw_cid, 128, 104, 16);
373 for (i = 0; i < 5; i++)
374 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
375 cid->pnm[5] = 0;
376 cid->prv = mmc_get_bits(raw_cid, 128, 56, 8);
377 cid->psn = mmc_get_bits(raw_cid, 128, 24, 32);
378 cid->mdt_year = mmc_get_bits(raw_cid, 128, 12, 8) + 2000;
379 cid->mdt_month = mmc_get_bits(raw_cid, 128, 8, 4);
380 }
381
382 static void
mmc_decode_cid_mmc(uint32_t * raw_cid,struct mmc_cid * cid)383 mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid)
384 {
385 int i;
386
387 /* There's no version info, so we take it on faith */
388 memset(cid, 0, sizeof(*cid));
389 cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
390 cid->oid = mmc_get_bits(raw_cid, 128, 104, 8);
391 for (i = 0; i < 6; i++)
392 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
393 cid->pnm[6] = 0;
394 cid->prv = mmc_get_bits(raw_cid, 128, 48, 8);
395 cid->psn = mmc_get_bits(raw_cid, 128, 16, 32);
396 cid->mdt_month = mmc_get_bits(raw_cid, 128, 12, 4);
397 cid->mdt_year = mmc_get_bits(raw_cid, 128, 8, 4) + 1997;
398 }
399
400 static void
mmc_format_card_id_string(struct sdda_softc * sc,struct mmc_params * mmcp)401 mmc_format_card_id_string(struct sdda_softc *sc, struct mmc_params *mmcp)
402 {
403 char oidstr[8];
404 uint8_t c1;
405 uint8_t c2;
406
407 /*
408 * Format a card ID string for use by the mmcsd driver, it's what
409 * appears between the <> in the following:
410 * mmcsd0: 968MB <SD SD01G 8.0 SN 2686905 Mfg 08/2008 by 3 TN> at mmc0
411 * 22.5MHz/4bit/128-block
412 *
413 * Also format just the card serial number, which the mmcsd driver will
414 * use as the disk->d_ident string.
415 *
416 * The card_id_string in mmc_ivars is currently allocated as 64 bytes,
417 * and our max formatted length is currently 55 bytes if every field
418 * contains the largest value.
419 *
420 * Sometimes the oid is two printable ascii chars; when it's not,
421 * format it as 0xnnnn instead.
422 */
423 c1 = (sc->cid.oid >> 8) & 0x0ff;
424 c2 = sc->cid.oid & 0x0ff;
425 if (c1 > 0x1f && c1 < 0x7f && c2 > 0x1f && c2 < 0x7f)
426 snprintf(oidstr, sizeof(oidstr), "%c%c", c1, c2);
427 else
428 snprintf(oidstr, sizeof(oidstr), "0x%04x", sc->cid.oid);
429 snprintf(sc->card_sn_string, sizeof(sc->card_sn_string),
430 "%08X", sc->cid.psn);
431 snprintf(sc->card_id_string, sizeof(sc->card_id_string),
432 "%s%s %s %d.%d SN %08X MFG %02d/%04d by %d %s",
433 mmcp->card_features & CARD_FEATURE_MMC ? "MMC" : "SD",
434 mmcp->card_features & CARD_FEATURE_SDHC ? "HC" : "",
435 sc->cid.pnm, sc->cid.prv >> 4, sc->cid.prv & 0x0f,
436 sc->cid.psn, sc->cid.mdt_month, sc->cid.mdt_year,
437 sc->cid.mid, oidstr);
438 }
439
440 static int
sddaopen(struct disk * dp)441 sddaopen(struct disk *dp)
442 {
443 struct sdda_part *part;
444 struct cam_periph *periph;
445 struct sdda_softc *softc;
446 int error;
447
448 part = (struct sdda_part *)dp->d_drv1;
449 softc = part->sc;
450 periph = softc->periph;
451 if (cam_periph_acquire(periph) != 0) {
452 return(ENXIO);
453 }
454
455 cam_periph_lock(periph);
456 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
457 cam_periph_unlock(periph);
458 cam_periph_release(periph);
459 return (error);
460 }
461
462 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddaopen\n"));
463
464 part->flags |= SDDA_FLAG_OPEN;
465
466 cam_periph_unhold(periph);
467 cam_periph_unlock(periph);
468 return (0);
469 }
470
471 static int
sddaclose(struct disk * dp)472 sddaclose(struct disk *dp)
473 {
474 struct sdda_part *part;
475 struct cam_periph *periph;
476 struct sdda_softc *softc;
477
478 part = (struct sdda_part *)dp->d_drv1;
479 softc = part->sc;
480 periph = softc->periph;
481 part->flags &= ~SDDA_FLAG_OPEN;
482
483 cam_periph_lock(periph);
484
485 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddaclose\n"));
486
487 while (softc->refcount != 0)
488 cam_periph_sleep(periph, &softc->refcount, PRIBIO, "sddaclose", 1);
489 cam_periph_unlock(periph);
490 cam_periph_release(periph);
491 return (0);
492 }
493
494 static void
sddaschedule(struct cam_periph * periph)495 sddaschedule(struct cam_periph *periph)
496 {
497 struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
498 struct sdda_part *part;
499 struct bio *bp;
500 int i;
501
502 /* Check if we have more work to do. */
503 /* Find partition that has outstanding commands. Prefer current partition. */
504 bp = bioq_first(&softc->part[softc->part_curr]->bio_queue);
505 if (bp == NULL) {
506 for (i = 0; i < MMC_PART_MAX; i++) {
507 if ((part = softc->part[i]) != NULL &&
508 (bp = bioq_first(&softc->part[i]->bio_queue)) != NULL)
509 break;
510 }
511 }
512 if (bp != NULL) {
513 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
514 }
515 }
516
517 /*
518 * Actually translate the requested transfer into one the physical driver
519 * can understand. The transfer is described by a buf and will include
520 * only one physical transfer.
521 */
522 static void
sddastrategy(struct bio * bp)523 sddastrategy(struct bio *bp)
524 {
525 struct cam_periph *periph;
526 struct sdda_part *part;
527 struct sdda_softc *softc;
528
529 part = (struct sdda_part *)bp->bio_disk->d_drv1;
530 softc = part->sc;
531 periph = softc->periph;
532
533 cam_periph_lock(periph);
534
535 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddastrategy(%p)\n", bp));
536
537 /*
538 * If the device has been made invalid, error out
539 */
540 if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
541 cam_periph_unlock(periph);
542 biofinish(bp, NULL, ENXIO);
543 return;
544 }
545
546 /*
547 * Place it in the queue of disk activities for this disk
548 */
549 bioq_disksort(&part->bio_queue, bp);
550
551 /*
552 * Schedule ourselves for performing the work.
553 */
554 sddaschedule(periph);
555 cam_periph_unlock(periph);
556
557 return;
558 }
559
560 static void
sddainit(void)561 sddainit(void)
562 {
563 cam_status status;
564
565 /*
566 * Install a global async callback. This callback will
567 * receive async callbacks like "new device found".
568 */
569 status = xpt_register_async(AC_FOUND_DEVICE, sddaasync, NULL, NULL);
570
571 if (status != CAM_REQ_CMP) {
572 printf("sdda: Failed to attach master async callback "
573 "due to status 0x%x!\n", status);
574 }
575 }
576
577 /*
578 * Callback from GEOM, called when it has finished cleaning up its
579 * resources.
580 */
581 static void
sddadiskgonecb(struct disk * dp)582 sddadiskgonecb(struct disk *dp)
583 {
584 struct cam_periph *periph;
585 struct sdda_part *part;
586
587 part = (struct sdda_part *)dp->d_drv1;
588 periph = part->sc->periph;
589 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddadiskgonecb\n"));
590
591 cam_periph_release(periph);
592 }
593
594 static void
sddaoninvalidate(struct cam_periph * periph)595 sddaoninvalidate(struct cam_periph *periph)
596 {
597 struct sdda_softc *softc;
598 struct sdda_part *part;
599
600 softc = (struct sdda_softc *)periph->softc;
601
602 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddaoninvalidate\n"));
603
604 /*
605 * De-register any async callbacks.
606 */
607 xpt_register_async(0, sddaasync, periph, periph->path);
608
609 /*
610 * Return all queued I/O with ENXIO.
611 * XXX Handle any transactions queued to the card
612 * with XPT_ABORT_CCB.
613 */
614 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("bioq_flush start\n"));
615 for (int i = 0; i < MMC_PART_MAX; i++) {
616 if ((part = softc->part[i]) != NULL) {
617 bioq_flush(&part->bio_queue, NULL, ENXIO);
618 disk_gone(part->disk);
619 }
620 }
621 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("bioq_flush end\n"));
622 }
623
624 static void
sddacleanup(struct cam_periph * periph)625 sddacleanup(struct cam_periph *periph)
626 {
627 struct sdda_softc *softc;
628 struct sdda_part *part;
629 int i;
630
631 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddacleanup\n"));
632 softc = (struct sdda_softc *)periph->softc;
633
634 cam_periph_unlock(periph);
635
636 for (i = 0; i < MMC_PART_MAX; i++) {
637 if ((part = softc->part[i]) != NULL) {
638 disk_destroy(part->disk);
639 free(part, M_DEVBUF);
640 softc->part[i] = NULL;
641 }
642 }
643 free(softc, M_DEVBUF);
644 cam_periph_lock(periph);
645 }
646
647 static void
sddaasync(void * callback_arg,uint32_t code,struct cam_path * path,void * arg)648 sddaasync(void *callback_arg, uint32_t code,
649 struct cam_path *path, void *arg)
650 {
651 struct ccb_getdev cgd;
652 struct cam_periph *periph;
653
654 periph = (struct cam_periph *)callback_arg;
655 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("sddaasync(code=%d)\n", code));
656 switch (code) {
657 case AC_FOUND_DEVICE:
658 {
659 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("=> AC_FOUND_DEVICE\n"));
660 struct ccb_getdev *cgd;
661 cam_status status;
662
663 cgd = (struct ccb_getdev *)arg;
664 if (cgd == NULL)
665 break;
666
667 if (cgd->protocol != PROTO_MMCSD)
668 break;
669
670 if (!(path->device->mmc_ident_data.card_features & CARD_FEATURE_MEMORY)) {
671 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("No memory on the card!\n"));
672 break;
673 }
674
675 /*
676 * Allocate a peripheral instance for
677 * this device and start the probe
678 * process.
679 */
680 status = cam_periph_alloc(sddaregister, sddaoninvalidate,
681 sddacleanup, sddastart,
682 "sdda", CAM_PERIPH_BIO,
683 path, sddaasync,
684 AC_FOUND_DEVICE, cgd);
685
686 if (status != CAM_REQ_CMP
687 && status != CAM_REQ_INPROG)
688 printf("sddaasync: Unable to attach to new device "
689 "due to status 0x%x\n", status);
690 break;
691 }
692 case AC_GETDEV_CHANGED:
693 {
694 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("=> AC_GETDEV_CHANGED\n"));
695 memset(&cgd, 0, sizeof(cgd));
696 xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
697 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
698 xpt_action((union ccb *)&cgd);
699 cam_periph_async(periph, code, path, arg);
700 break;
701 }
702 case AC_ADVINFO_CHANGED:
703 {
704 uintptr_t buftype;
705 int i;
706
707 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("=> AC_ADVINFO_CHANGED\n"));
708 buftype = (uintptr_t)arg;
709 if (buftype == CDAI_TYPE_PHYS_PATH) {
710 struct sdda_softc *softc;
711 struct sdda_part *part;
712
713 softc = periph->softc;
714 for (i = 0; i < MMC_PART_MAX; i++) {
715 if ((part = softc->part[i]) != NULL) {
716 disk_attr_changed(part->disk, "GEOM::physpath",
717 M_NOWAIT);
718 }
719 }
720 }
721 break;
722 }
723 default:
724 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("=> default?!\n"));
725 cam_periph_async(periph, code, path, arg);
726 break;
727 }
728 }
729
730 static int
sddagetattr(struct bio * bp)731 sddagetattr(struct bio *bp)
732 {
733 struct cam_periph *periph;
734 struct sdda_softc *softc;
735 struct sdda_part *part;
736 int ret;
737
738 part = (struct sdda_part *)bp->bio_disk->d_drv1;
739 softc = part->sc;
740 periph = softc->periph;
741 cam_periph_lock(periph);
742 ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute,
743 periph->path);
744 cam_periph_unlock(periph);
745 if (ret == 0)
746 bp->bio_completed = bp->bio_length;
747 return (ret);
748 }
749
750 static cam_status
sddaregister(struct cam_periph * periph,void * arg)751 sddaregister(struct cam_periph *periph, void *arg)
752 {
753 struct sdda_softc *softc;
754 struct ccb_getdev *cgd;
755
756 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddaregister\n"));
757 cgd = (struct ccb_getdev *)arg;
758 if (cgd == NULL) {
759 printf("sddaregister: no getdev CCB, can't register device\n");
760 return (CAM_REQ_CMP_ERR);
761 }
762
763 softc = (struct sdda_softc *)malloc(sizeof(*softc), M_DEVBUF,
764 M_NOWAIT|M_ZERO);
765 if (softc == NULL) {
766 printf("sddaregister: Unable to probe new device. "
767 "Unable to allocate softc\n");
768 return (CAM_REQ_CMP_ERR);
769 }
770
771 softc->state = SDDA_STATE_INIT;
772 softc->mmcdata =
773 (struct mmc_data *)malloc(sizeof(struct mmc_data), M_DEVBUF, M_NOWAIT|M_ZERO);
774 if (softc->mmcdata == NULL) {
775 printf("sddaregister: Unable to probe new device. "
776 "Unable to allocate mmcdata\n");
777 free(softc, M_DEVBUF);
778 return (CAM_REQ_CMP_ERR);
779 }
780 periph->softc = softc;
781 softc->periph = periph;
782
783 xpt_schedule(periph, CAM_PRIORITY_XPT);
784 TASK_INIT(&softc->start_init_task, 0, sdda_start_init_task, periph);
785 taskqueue_enqueue(taskqueue_thread, &softc->start_init_task);
786
787 return (CAM_REQ_CMP);
788 }
789
790 static int
mmc_exec_app_cmd(struct cam_periph * periph,union ccb * ccb,struct mmc_command * cmd)791 mmc_exec_app_cmd(struct cam_periph *periph, union ccb *ccb,
792 struct mmc_command *cmd) {
793 int err;
794
795 /* Send APP_CMD first */
796 memset(&ccb->mmcio.cmd, 0, sizeof(struct mmc_command));
797 memset(&ccb->mmcio.stop, 0, sizeof(struct mmc_command));
798 cam_fill_mmcio(&ccb->mmcio,
799 /*retries*/ 0,
800 /*cbfcnp*/ NULL,
801 /*flags*/ CAM_DIR_NONE,
802 /*mmc_opcode*/ MMC_APP_CMD,
803 /*mmc_arg*/ get_rca(periph) << 16,
804 /*mmc_flags*/ MMC_RSP_R1 | MMC_CMD_AC,
805 /*mmc_data*/ NULL,
806 /*timeout*/ 0);
807
808 cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
809 err = mmc_handle_reply(ccb);
810 if (err != 0)
811 return (err);
812 if (!(ccb->mmcio.cmd.resp[0] & R1_APP_CMD))
813 return (EIO);
814
815 /* Now exec actual command */
816 int flags = 0;
817 if (cmd->data != NULL) {
818 ccb->mmcio.cmd.data = cmd->data;
819 if (cmd->data->flags & MMC_DATA_READ)
820 flags |= CAM_DIR_IN;
821 if (cmd->data->flags & MMC_DATA_WRITE)
822 flags |= CAM_DIR_OUT;
823 } else flags = CAM_DIR_NONE;
824
825 cam_fill_mmcio(&ccb->mmcio,
826 /*retries*/ 0,
827 /*cbfcnp*/ NULL,
828 /*flags*/ flags,
829 /*mmc_opcode*/ cmd->opcode,
830 /*mmc_arg*/ cmd->arg,
831 /*mmc_flags*/ cmd->flags,
832 /*mmc_data*/ cmd->data,
833 /*timeout*/ 0);
834
835 cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
836 err = mmc_handle_reply(ccb);
837 if (err != 0)
838 return (err);
839 memcpy(cmd->resp, ccb->mmcio.cmd.resp, sizeof(cmd->resp));
840 cmd->error = ccb->mmcio.cmd.error;
841
842 return (0);
843 }
844
845 static int
mmc_app_get_scr(struct cam_periph * periph,union ccb * ccb,uint32_t * rawscr)846 mmc_app_get_scr(struct cam_periph *periph, union ccb *ccb, uint32_t *rawscr) {
847 int err;
848 struct mmc_command cmd;
849 struct mmc_data d;
850
851 memset(&cmd, 0, sizeof(cmd));
852 memset(&d, 0, sizeof(d));
853
854 memset(rawscr, 0, 8);
855 cmd.opcode = ACMD_SEND_SCR;
856 cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
857 cmd.arg = 0;
858
859 d.data = rawscr;
860 d.len = 8;
861 d.flags = MMC_DATA_READ;
862 cmd.data = &d;
863
864 err = mmc_exec_app_cmd(periph, ccb, &cmd);
865 rawscr[0] = be32toh(rawscr[0]);
866 rawscr[1] = be32toh(rawscr[1]);
867 return (err);
868 }
869
870 static int
mmc_send_ext_csd(struct cam_periph * periph,union ccb * ccb,uint8_t * rawextcsd,size_t buf_len)871 mmc_send_ext_csd(struct cam_periph *periph, union ccb *ccb,
872 uint8_t *rawextcsd, size_t buf_len) {
873 int err;
874 struct mmc_data d;
875
876 KASSERT(buf_len == 512, ("Buffer for ext csd must be 512 bytes"));
877 memset(&d, 0, sizeof(d));
878 d.data = rawextcsd;
879 d.len = buf_len;
880 d.flags = MMC_DATA_READ;
881 memset(d.data, 0, d.len);
882
883 cam_fill_mmcio(&ccb->mmcio,
884 /*retries*/ 0,
885 /*cbfcnp*/ NULL,
886 /*flags*/ CAM_DIR_IN,
887 /*mmc_opcode*/ MMC_SEND_EXT_CSD,
888 /*mmc_arg*/ 0,
889 /*mmc_flags*/ MMC_RSP_R1 | MMC_CMD_ADTC,
890 /*mmc_data*/ &d,
891 /*timeout*/ 0);
892
893 cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
894 err = mmc_handle_reply(ccb);
895 return (err);
896 }
897
898 static void
mmc_app_decode_scr(uint32_t * raw_scr,struct mmc_scr * scr)899 mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr)
900 {
901 unsigned int scr_struct;
902
903 memset(scr, 0, sizeof(*scr));
904
905 scr_struct = mmc_get_bits(raw_scr, 64, 60, 4);
906 if (scr_struct != 0) {
907 printf("Unrecognised SCR structure version %d\n",
908 scr_struct);
909 return;
910 }
911 scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4);
912 scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4);
913 }
914
915 static inline void
mmc_switch_fill_mmcio(union ccb * ccb,uint8_t set,uint8_t index,uint8_t value,u_int timeout)916 mmc_switch_fill_mmcio(union ccb *ccb,
917 uint8_t set, uint8_t index, uint8_t value, u_int timeout)
918 {
919 int arg = (MMC_SWITCH_FUNC_WR << 24) |
920 (index << 16) |
921 (value << 8) |
922 set;
923
924 cam_fill_mmcio(&ccb->mmcio,
925 /*retries*/ 0,
926 /*cbfcnp*/ NULL,
927 /*flags*/ CAM_DIR_NONE,
928 /*mmc_opcode*/ MMC_SWITCH_FUNC,
929 /*mmc_arg*/ arg,
930 /*mmc_flags*/ MMC_RSP_R1B | MMC_CMD_AC,
931 /*mmc_data*/ NULL,
932 /*timeout*/ timeout);
933 }
934
935 static int
mmc_select_card(struct cam_periph * periph,union ccb * ccb,uint32_t rca)936 mmc_select_card(struct cam_periph *periph, union ccb *ccb, uint32_t rca)
937 {
938 int flags, err;
939
940 flags = (rca ? MMC_RSP_R1B : MMC_RSP_NONE) | MMC_CMD_AC;
941 cam_fill_mmcio(&ccb->mmcio,
942 /*retries*/ 0,
943 /*cbfcnp*/ NULL,
944 /*flags*/ CAM_DIR_IN,
945 /*mmc_opcode*/ MMC_SELECT_CARD,
946 /*mmc_arg*/ rca << 16,
947 /*mmc_flags*/ flags,
948 /*mmc_data*/ NULL,
949 /*timeout*/ 0);
950
951 cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
952 err = mmc_handle_reply(ccb);
953 return (err);
954 }
955
956 static int
mmc_switch(struct cam_periph * periph,union ccb * ccb,uint8_t set,uint8_t index,uint8_t value,u_int timeout)957 mmc_switch(struct cam_periph *periph, union ccb *ccb,
958 uint8_t set, uint8_t index, uint8_t value, u_int timeout)
959 {
960 int err;
961
962 mmc_switch_fill_mmcio(ccb, set, index, value, timeout);
963 cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
964 err = mmc_handle_reply(ccb);
965 return (err);
966 }
967
968 static uint32_t
mmc_get_spec_vers(struct cam_periph * periph)969 mmc_get_spec_vers(struct cam_periph *periph) {
970 struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
971
972 return (softc->csd.spec_vers);
973 }
974
975 static uint64_t
mmc_get_media_size(struct cam_periph * periph)976 mmc_get_media_size(struct cam_periph *periph) {
977 struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
978
979 return (softc->mediasize);
980 }
981
982 static uint32_t
mmc_get_cmd6_timeout(struct cam_periph * periph)983 mmc_get_cmd6_timeout(struct cam_periph *periph)
984 {
985 struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
986
987 if (mmc_get_spec_vers(periph) >= 6)
988 return (softc->raw_ext_csd[EXT_CSD_GEN_CMD6_TIME] * 10);
989 return (500 * 1000);
990 }
991
992 static int
mmc_sd_switch(struct cam_periph * periph,union ccb * ccb,uint8_t mode,uint8_t grp,uint8_t value,uint8_t * res)993 mmc_sd_switch(struct cam_periph *periph, union ccb *ccb,
994 uint8_t mode, uint8_t grp, uint8_t value,
995 uint8_t *res) {
996 struct mmc_data mmc_d;
997 uint32_t arg;
998 int err;
999
1000 memset(res, 0, 64);
1001 memset(&mmc_d, 0, sizeof(mmc_d));
1002 mmc_d.len = 64;
1003 mmc_d.data = res;
1004 mmc_d.flags = MMC_DATA_READ;
1005
1006 arg = mode << 31; /* 0 - check, 1 - set */
1007 arg |= 0x00FFFFFF;
1008 arg &= ~(0xF << (grp * 4));
1009 arg |= value << (grp * 4);
1010
1011 cam_fill_mmcio(&ccb->mmcio,
1012 /*retries*/ 0,
1013 /*cbfcnp*/ NULL,
1014 /*flags*/ CAM_DIR_IN,
1015 /*mmc_opcode*/ SD_SWITCH_FUNC,
1016 /*mmc_arg*/ arg,
1017 /*mmc_flags*/ MMC_RSP_R1 | MMC_CMD_ADTC,
1018 /*mmc_data*/ &mmc_d,
1019 /*timeout*/ 0);
1020
1021 cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
1022 err = mmc_handle_reply(ccb);
1023 return (err);
1024 }
1025
1026 static int
mmc_set_timing(struct cam_periph * periph,union ccb * ccb,enum mmc_bus_timing timing)1027 mmc_set_timing(struct cam_periph *periph,
1028 union ccb *ccb,
1029 enum mmc_bus_timing timing)
1030 {
1031 u_char switch_res[64];
1032 int err;
1033 uint8_t value;
1034 struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
1035 struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
1036
1037 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
1038 ("mmc_set_timing(timing=%d)", timing));
1039 switch (timing) {
1040 case bus_timing_normal:
1041 value = 0;
1042 break;
1043 case bus_timing_hs:
1044 value = 1;
1045 break;
1046 default:
1047 return (MMC_ERR_INVALID);
1048 }
1049 if (mmcp->card_features & CARD_FEATURE_MMC) {
1050 err = mmc_switch(periph, ccb, EXT_CSD_CMD_SET_NORMAL,
1051 EXT_CSD_HS_TIMING, value, softc->cmd6_time);
1052 } else {
1053 err = mmc_sd_switch(periph, ccb, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1, value, switch_res);
1054 }
1055
1056 /* Set high-speed timing on the host */
1057 struct ccb_trans_settings_mmc *cts;
1058 cts = &ccb->cts.proto_specific.mmc;
1059 ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1060 ccb->ccb_h.flags = CAM_DIR_NONE;
1061 ccb->ccb_h.retry_count = 0;
1062 ccb->ccb_h.timeout = 100;
1063 ccb->ccb_h.cbfcnp = NULL;
1064 cts->ios.timing = timing;
1065 cts->ios_valid = MMC_BT;
1066 xpt_action(ccb);
1067
1068 return (err);
1069 }
1070
1071 static void
sdda_start_init_task(void * context,int pending)1072 sdda_start_init_task(void *context, int pending) {
1073 union ccb *new_ccb;
1074 struct cam_periph *periph;
1075
1076 periph = (struct cam_periph *)context;
1077 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sdda_start_init_task\n"));
1078 new_ccb = xpt_alloc_ccb();
1079 xpt_setup_ccb(&new_ccb->ccb_h, periph->path,
1080 CAM_PRIORITY_NONE);
1081
1082 cam_periph_lock(periph);
1083 cam_periph_hold(periph, PRIBIO|PCATCH);
1084 sdda_start_init(context, new_ccb);
1085 cam_periph_unhold(periph);
1086 cam_periph_unlock(periph);
1087 xpt_free_ccb(new_ccb);
1088 }
1089
1090 static void
sdda_set_bus_width(struct cam_periph * periph,union ccb * ccb,int width)1091 sdda_set_bus_width(struct cam_periph *periph, union ccb *ccb, int width) {
1092 struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
1093 struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
1094 int err;
1095
1096 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sdda_set_bus_width\n"));
1097
1098 /* First set for the card, then for the host */
1099 if (mmcp->card_features & CARD_FEATURE_MMC) {
1100 uint8_t value;
1101 switch (width) {
1102 case bus_width_1:
1103 value = EXT_CSD_BUS_WIDTH_1;
1104 break;
1105 case bus_width_4:
1106 value = EXT_CSD_BUS_WIDTH_4;
1107 break;
1108 case bus_width_8:
1109 value = EXT_CSD_BUS_WIDTH_8;
1110 break;
1111 default:
1112 panic("Invalid bus width %d", width);
1113 }
1114 err = mmc_switch(periph, ccb, EXT_CSD_CMD_SET_NORMAL,
1115 EXT_CSD_BUS_WIDTH, value, softc->cmd6_time);
1116 } else {
1117 /* For SD cards we send ACMD6 with the required bus width in arg */
1118 struct mmc_command cmd;
1119 memset(&cmd, 0, sizeof(struct mmc_command));
1120 cmd.opcode = ACMD_SET_BUS_WIDTH;
1121 cmd.arg = width;
1122 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
1123 err = mmc_exec_app_cmd(periph, ccb, &cmd);
1124 }
1125
1126 if (err != MMC_ERR_NONE) {
1127 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Error %d when setting bus width on the card\n", err));
1128 return;
1129 }
1130 /* Now card is done, set the host to the same width */
1131 struct ccb_trans_settings_mmc *cts;
1132 cts = &ccb->cts.proto_specific.mmc;
1133 ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1134 ccb->ccb_h.flags = CAM_DIR_NONE;
1135 ccb->ccb_h.retry_count = 0;
1136 ccb->ccb_h.timeout = 100;
1137 ccb->ccb_h.cbfcnp = NULL;
1138 cts->ios.bus_width = width;
1139 cts->ios_valid = MMC_BW;
1140 xpt_action(ccb);
1141 }
1142
1143 static inline const char
part_type(u_int type)1144 *part_type(u_int type)
1145 {
1146
1147 switch (type) {
1148 case EXT_CSD_PART_CONFIG_ACC_RPMB:
1149 return ("RPMB");
1150 case EXT_CSD_PART_CONFIG_ACC_DEFAULT:
1151 return ("default");
1152 case EXT_CSD_PART_CONFIG_ACC_BOOT0:
1153 return ("boot0");
1154 case EXT_CSD_PART_CONFIG_ACC_BOOT1:
1155 return ("boot1");
1156 case EXT_CSD_PART_CONFIG_ACC_GP0:
1157 case EXT_CSD_PART_CONFIG_ACC_GP1:
1158 case EXT_CSD_PART_CONFIG_ACC_GP2:
1159 case EXT_CSD_PART_CONFIG_ACC_GP3:
1160 return ("general purpose");
1161 default:
1162 return ("(unknown type)");
1163 }
1164 }
1165
1166 static inline const char
bus_width_str(enum mmc_bus_width w)1167 *bus_width_str(enum mmc_bus_width w)
1168 {
1169
1170 switch (w) {
1171 case bus_width_1:
1172 return ("1-bit");
1173 case bus_width_4:
1174 return ("4-bit");
1175 case bus_width_8:
1176 return ("8-bit");
1177 default:
1178 __assert_unreachable();
1179 }
1180 }
1181
1182 static uint32_t
sdda_get_host_caps(struct cam_periph * periph,union ccb * ccb)1183 sdda_get_host_caps(struct cam_periph *periph, union ccb *ccb)
1184 {
1185 struct ccb_trans_settings_mmc *cts;
1186
1187 cts = &ccb->cts.proto_specific.mmc;
1188
1189 ccb->ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1190 ccb->ccb_h.flags = CAM_DIR_NONE;
1191 ccb->ccb_h.retry_count = 0;
1192 ccb->ccb_h.timeout = 100;
1193 ccb->ccb_h.cbfcnp = NULL;
1194 xpt_action(ccb);
1195
1196 if (ccb->ccb_h.status != CAM_REQ_CMP)
1197 panic("Cannot get host caps");
1198 return (cts->host_caps);
1199 }
1200
1201 static uint32_t
sdda_get_max_data(struct cam_periph * periph,union ccb * ccb)1202 sdda_get_max_data(struct cam_periph *periph, union ccb *ccb)
1203 {
1204 struct ccb_trans_settings_mmc *cts;
1205
1206 cts = &ccb->cts.proto_specific.mmc;
1207 memset(cts, 0, sizeof(struct ccb_trans_settings_mmc));
1208
1209 ccb->ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1210 ccb->ccb_h.flags = CAM_DIR_NONE;
1211 ccb->ccb_h.retry_count = 0;
1212 ccb->ccb_h.timeout = 100;
1213 ccb->ccb_h.cbfcnp = NULL;
1214 xpt_action(ccb);
1215
1216 if (ccb->ccb_h.status != CAM_REQ_CMP)
1217 panic("Cannot get host max data");
1218 KASSERT(cts->host_max_data != 0, ("host_max_data == 0?!"));
1219 return (cts->host_max_data);
1220 }
1221
1222 static void
sdda_start_init(void * context,union ccb * start_ccb)1223 sdda_start_init(void *context, union ccb *start_ccb)
1224 {
1225 struct cam_periph *periph = (struct cam_periph *)context;
1226 struct ccb_trans_settings_mmc *cts;
1227 uint32_t host_caps;
1228 uint32_t sec_count;
1229 int err;
1230 int host_f_max;
1231 uint8_t card_type;
1232
1233 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sdda_start_init\n"));
1234 /* periph was held for us when this task was enqueued */
1235 if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
1236 cam_periph_release(periph);
1237 return;
1238 }
1239
1240 struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
1241 struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
1242 struct cam_ed *device = periph->path->device;
1243
1244 if (mmcp->card_features & CARD_FEATURE_MMC) {
1245 mmc_decode_csd_mmc(mmcp->card_csd, &softc->csd);
1246 mmc_decode_cid_mmc(mmcp->card_cid, &softc->cid);
1247 if (mmc_get_spec_vers(periph) >= 4) {
1248 err = mmc_send_ext_csd(periph, start_ccb,
1249 (uint8_t *)&softc->raw_ext_csd,
1250 sizeof(softc->raw_ext_csd));
1251 if (err != 0) {
1252 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH,
1253 ("Cannot read EXT_CSD, err %d", err));
1254 return;
1255 }
1256 }
1257 } else {
1258 mmc_decode_csd_sd(mmcp->card_csd, &softc->csd);
1259 mmc_decode_cid_sd(mmcp->card_cid, &softc->cid);
1260 }
1261
1262 softc->sector_count = softc->csd.capacity / MMC_SECTOR_SIZE;
1263 softc->mediasize = softc->csd.capacity;
1264 softc->cmd6_time = mmc_get_cmd6_timeout(periph);
1265
1266 /* MMC >= 4.x have EXT_CSD that has its own opinion about capacity */
1267 if (mmc_get_spec_vers(periph) >= 4) {
1268 sec_count = softc->raw_ext_csd[EXT_CSD_SEC_CNT] +
1269 (softc->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) +
1270 (softc->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) +
1271 (softc->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1272 if (sec_count != 0) {
1273 softc->sector_count = sec_count;
1274 softc->mediasize = softc->sector_count * MMC_SECTOR_SIZE;
1275 /* FIXME: there should be a better name for this option...*/
1276 mmcp->card_features |= CARD_FEATURE_SDHC;
1277 }
1278 }
1279 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH,
1280 ("Capacity: %"PRIu64", sectors: %"PRIu64"\n",
1281 softc->mediasize,
1282 softc->sector_count));
1283 mmc_format_card_id_string(softc, mmcp);
1284
1285 /* Update info for CAM */
1286 device->serial_num_len = strlen(softc->card_sn_string);
1287 device->serial_num = (uint8_t *)malloc((device->serial_num_len + 1),
1288 M_CAMXPT, M_NOWAIT);
1289 strlcpy(device->serial_num, softc->card_sn_string, device->serial_num_len + 1);
1290
1291 device->device_id_len = strlen(softc->card_id_string);
1292 device->device_id = (uint8_t *)malloc((device->device_id_len + 1),
1293 M_CAMXPT, M_NOWAIT);
1294 strlcpy(device->device_id, softc->card_id_string, device->device_id_len + 1);
1295
1296 strlcpy(mmcp->model, softc->card_id_string, sizeof(mmcp->model));
1297
1298 /* Set the clock frequency that the card can handle */
1299 cts = &start_ccb->cts.proto_specific.mmc;
1300
1301 /* First, get the host's max freq */
1302 start_ccb->ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1303 start_ccb->ccb_h.flags = CAM_DIR_NONE;
1304 start_ccb->ccb_h.retry_count = 0;
1305 start_ccb->ccb_h.timeout = 100;
1306 start_ccb->ccb_h.cbfcnp = NULL;
1307 xpt_action(start_ccb);
1308
1309 if (start_ccb->ccb_h.status != CAM_REQ_CMP)
1310 panic("Cannot get max host freq");
1311 host_f_max = cts->host_f_max;
1312 host_caps = cts->host_caps;
1313 if (cts->ios.bus_width != bus_width_1)
1314 panic("Bus width in ios is not 1-bit");
1315
1316 /* Now check if the card supports High-speed */
1317 softc->card_f_max = softc->csd.tran_speed;
1318
1319 if (host_caps & MMC_CAP_HSPEED) {
1320 /* Find out if the card supports High speed timing */
1321 if (mmcp->card_features & CARD_FEATURE_SD20) {
1322 /* Get and decode SCR */
1323 uint32_t rawscr[2];
1324 uint8_t res[64];
1325 if (mmc_app_get_scr(periph, start_ccb, rawscr)) {
1326 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Cannot get SCR\n"));
1327 goto finish_hs_tests;
1328 }
1329 mmc_app_decode_scr(rawscr, &softc->scr);
1330
1331 if ((softc->scr.sda_vsn >= 1) && (softc->csd.ccc & (1<<10))) {
1332 mmc_sd_switch(periph, start_ccb, SD_SWITCH_MODE_CHECK,
1333 SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE, res);
1334 if (res[13] & 2) {
1335 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Card supports HS\n"));
1336 softc->card_f_max = SD_HS_MAX;
1337 }
1338
1339 /*
1340 * We deselect then reselect the card here. Some cards
1341 * become unselected and timeout with the above two
1342 * commands, although the state tables / diagrams in the
1343 * standard suggest they go back to the transfer state.
1344 * Other cards don't become deselected, and if we
1345 * attempt to blindly re-select them, we get timeout
1346 * errors from some controllers. So we deselect then
1347 * reselect to handle all situations.
1348 */
1349 mmc_select_card(periph, start_ccb, 0);
1350 mmc_select_card(periph, start_ccb, get_rca(periph));
1351 } else {
1352 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Not trying the switch\n"));
1353 goto finish_hs_tests;
1354 }
1355 }
1356
1357 if (mmcp->card_features & CARD_FEATURE_MMC && mmc_get_spec_vers(periph) >= 4) {
1358 card_type = softc->raw_ext_csd[EXT_CSD_CARD_TYPE];
1359 if (card_type & EXT_CSD_CARD_TYPE_HS_52)
1360 softc->card_f_max = MMC_TYPE_HS_52_MAX;
1361 else if (card_type & EXT_CSD_CARD_TYPE_HS_26)
1362 softc->card_f_max = MMC_TYPE_HS_26_MAX;
1363 if ((card_type & EXT_CSD_CARD_TYPE_DDR_52_1_2V) != 0 &&
1364 (host_caps & MMC_CAP_SIGNALING_120) != 0) {
1365 setbit(&softc->timings, bus_timing_mmc_ddr52);
1366 setbit(&softc->vccq_120, bus_timing_mmc_ddr52);
1367 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Card supports DDR52 at 1.2V\n"));
1368 }
1369 if ((card_type & EXT_CSD_CARD_TYPE_DDR_52_1_8V) != 0 &&
1370 (host_caps & MMC_CAP_SIGNALING_180) != 0) {
1371 setbit(&softc->timings, bus_timing_mmc_ddr52);
1372 setbit(&softc->vccq_180, bus_timing_mmc_ddr52);
1373 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Card supports DDR52 at 1.8V\n"));
1374 }
1375 if ((card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) != 0 &&
1376 (host_caps & MMC_CAP_SIGNALING_120) != 0) {
1377 setbit(&softc->timings, bus_timing_mmc_hs200);
1378 setbit(&softc->vccq_120, bus_timing_mmc_hs200);
1379 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Card supports HS200 at 1.2V\n"));
1380 }
1381 if ((card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) != 0 &&
1382 (host_caps & MMC_CAP_SIGNALING_180) != 0) {
1383 setbit(&softc->timings, bus_timing_mmc_hs200);
1384 setbit(&softc->vccq_180, bus_timing_mmc_hs200);
1385 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Card supports HS200 at 1.8V\n"));
1386 }
1387 }
1388 }
1389 int f_max;
1390 finish_hs_tests:
1391 f_max = min(host_f_max, softc->card_f_max);
1392 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Set SD freq to %d MHz (min out of host f=%d MHz and card f=%d MHz)\n", f_max / 1000000, host_f_max / 1000000, softc->card_f_max / 1000000));
1393
1394 /* Enable high-speed timing on the card */
1395 if (f_max > 25000000) {
1396 err = mmc_set_timing(periph, start_ccb, bus_timing_hs);
1397 if (err != MMC_ERR_NONE) {
1398 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("Cannot switch card to high-speed mode"));
1399 f_max = 25000000;
1400 }
1401 }
1402 /* If possible, set lower-level signaling */
1403 enum mmc_bus_timing timing;
1404 /* FIXME: MMCCAM supports max. bus_timing_mmc_ddr52 at the moment. */
1405 for (timing = bus_timing_mmc_ddr52; timing > bus_timing_normal; timing--) {
1406 if (isset(&softc->vccq_120, timing)) {
1407 /* Set VCCQ = 1.2V */
1408 start_ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1409 start_ccb->ccb_h.flags = CAM_DIR_NONE;
1410 start_ccb->ccb_h.retry_count = 0;
1411 start_ccb->ccb_h.timeout = 100;
1412 start_ccb->ccb_h.cbfcnp = NULL;
1413 cts->ios.vccq = vccq_120;
1414 cts->ios_valid = MMC_VCCQ;
1415 xpt_action(start_ccb);
1416 break;
1417 } else if (isset(&softc->vccq_180, timing)) {
1418 /* Set VCCQ = 1.8V */
1419 start_ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1420 start_ccb->ccb_h.flags = CAM_DIR_NONE;
1421 start_ccb->ccb_h.retry_count = 0;
1422 start_ccb->ccb_h.timeout = 100;
1423 start_ccb->ccb_h.cbfcnp = NULL;
1424 cts->ios.vccq = vccq_180;
1425 cts->ios_valid = MMC_VCCQ;
1426 xpt_action(start_ccb);
1427 break;
1428 } else {
1429 /* Set VCCQ = 3.3V */
1430 start_ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1431 start_ccb->ccb_h.flags = CAM_DIR_NONE;
1432 start_ccb->ccb_h.retry_count = 0;
1433 start_ccb->ccb_h.timeout = 100;
1434 start_ccb->ccb_h.cbfcnp = NULL;
1435 cts->ios.vccq = vccq_330;
1436 cts->ios_valid = MMC_VCCQ;
1437 xpt_action(start_ccb);
1438 break;
1439 }
1440 }
1441
1442 /* Set frequency on the controller */
1443 start_ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1444 start_ccb->ccb_h.flags = CAM_DIR_NONE;
1445 start_ccb->ccb_h.retry_count = 0;
1446 start_ccb->ccb_h.timeout = 100;
1447 start_ccb->ccb_h.cbfcnp = NULL;
1448 cts->ios.clock = f_max;
1449 cts->ios_valid = MMC_CLK;
1450 xpt_action(start_ccb);
1451
1452 /* Set bus width */
1453 enum mmc_bus_width desired_bus_width = bus_width_1;
1454 enum mmc_bus_width max_host_bus_width =
1455 (host_caps & MMC_CAP_8_BIT_DATA ? bus_width_8 :
1456 host_caps & MMC_CAP_4_BIT_DATA ? bus_width_4 : bus_width_1);
1457 enum mmc_bus_width max_card_bus_width = bus_width_1;
1458 if (mmcp->card_features & CARD_FEATURE_SD20 &&
1459 softc->scr.bus_widths & SD_SCR_BUS_WIDTH_4)
1460 max_card_bus_width = bus_width_4;
1461 /*
1462 * Unlike SD, MMC cards don't have any information about supported bus width...
1463 * So we need to perform read/write test to find out the width.
1464 */
1465 /* TODO: figure out bus width for MMC; use 8-bit for now (to test on BBB) */
1466 if (mmcp->card_features & CARD_FEATURE_MMC)
1467 max_card_bus_width = bus_width_8;
1468
1469 desired_bus_width = min(max_host_bus_width, max_card_bus_width);
1470 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH,
1471 ("Set bus width to %s (min of host %s and card %s)\n",
1472 bus_width_str(desired_bus_width),
1473 bus_width_str(max_host_bus_width),
1474 bus_width_str(max_card_bus_width)));
1475 sdda_set_bus_width(periph, start_ccb, desired_bus_width);
1476
1477 softc->state = SDDA_STATE_NORMAL;
1478
1479 cam_periph_unhold(periph);
1480 /* MMC partitions support */
1481 if (mmcp->card_features & CARD_FEATURE_MMC && mmc_get_spec_vers(periph) >= 4) {
1482 sdda_process_mmc_partitions(periph, start_ccb);
1483 } else if (mmcp->card_features & CARD_FEATURE_MEMORY) {
1484 /* For SD[HC] cards, just add one partition that is the whole card */
1485 if (sdda_add_part(periph, 0, SDDA_FMT,
1486 periph->unit_number,
1487 mmc_get_media_size(periph),
1488 sdda_get_read_only(periph, start_ccb)) == false)
1489 return;
1490 softc->part_curr = 0;
1491 }
1492 cam_periph_hold(periph, PRIBIO|PCATCH);
1493
1494 xpt_announce_periph(periph, softc->card_id_string);
1495 /*
1496 * Add async callbacks for bus reset and bus device reset calls.
1497 * I don't bother checking if this fails as, in most cases,
1498 * the system will function just fine without them and the only
1499 * alternative would be to not attach the device on failure.
1500 */
1501 xpt_register_async(AC_LOST_DEVICE | AC_GETDEV_CHANGED |
1502 AC_ADVINFO_CHANGED, sddaasync, periph, periph->path);
1503 }
1504
1505 static bool
sdda_add_part(struct cam_periph * periph,u_int type,const char * name,u_int cnt,off_t media_size,bool ro)1506 sdda_add_part(struct cam_periph *periph, u_int type, const char *name,
1507 u_int cnt, off_t media_size, bool ro)
1508 {
1509 struct sdda_softc *sc = (struct sdda_softc *)periph->softc;
1510 struct sdda_part *part;
1511 struct ccb_pathinq cpi;
1512
1513 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH,
1514 ("Partition type '%s', size %ju %s\n",
1515 part_type(type),
1516 media_size,
1517 ro ? "(read-only)" : ""));
1518
1519 part = sc->part[type] = malloc(sizeof(*part), M_DEVBUF,
1520 M_NOWAIT | M_ZERO);
1521 if (part == NULL) {
1522 printf("Cannot add partition for sdda\n");
1523 return (false);
1524 }
1525
1526 part->cnt = cnt;
1527 part->type = type;
1528 part->ro = ro;
1529 part->sc = sc;
1530 snprintf(part->name, sizeof(part->name), name, "sdda", periph->unit_number);
1531
1532 /*
1533 * Due to the nature of RPMB partition it doesn't make much sense
1534 * to add it as a disk. It would be more appropriate to create a
1535 * userland tool to operate on the partition or leverage the existing
1536 * tools from sysutils/mmc-utils.
1537 */
1538 if (type == EXT_CSD_PART_CONFIG_ACC_RPMB) {
1539 /* TODO: Create device, assign IOCTL handler */
1540 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH,
1541 ("Don't know what to do with RPMB partitions yet\n"));
1542 return (false);
1543 }
1544
1545 bioq_init(&part->bio_queue);
1546
1547 bzero(&cpi, sizeof(cpi));
1548 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE);
1549 cpi.ccb_h.func_code = XPT_PATH_INQ;
1550 xpt_action((union ccb *)&cpi);
1551
1552 /*
1553 * Register this media as a disk
1554 */
1555 (void)cam_periph_hold(periph, PRIBIO);
1556 cam_periph_unlock(periph);
1557
1558 part->disk = disk_alloc();
1559 part->disk->d_rotation_rate = DISK_RR_NON_ROTATING;
1560 part->disk->d_devstat = devstat_new_entry(part->name,
1561 cnt, MMC_SECTOR_SIZE,
1562 DEVSTAT_ALL_SUPPORTED,
1563 DEVSTAT_TYPE_DIRECT | XPORT_DEVSTAT_TYPE(cpi.transport),
1564 DEVSTAT_PRIORITY_DISK);
1565
1566 part->disk->d_open = sddaopen;
1567 part->disk->d_close = sddaclose;
1568 part->disk->d_strategy = sddastrategy;
1569 if (cam_sim_pollable(periph->sim))
1570 part->disk->d_dump = sddadump;
1571 part->disk->d_getattr = sddagetattr;
1572 part->disk->d_gone = sddadiskgonecb;
1573 part->disk->d_name = part->name;
1574 part->disk->d_drv1 = part;
1575 part->disk->d_maxsize =
1576 MIN(maxphys, sdda_get_max_data(periph,
1577 (union ccb *)&cpi) * mmc_get_sector_size(periph));
1578 part->disk->d_unit = cnt;
1579 part->disk->d_flags = 0;
1580 strlcpy(part->disk->d_descr, sc->card_id_string,
1581 MIN(sizeof(part->disk->d_descr), sizeof(sc->card_id_string)));
1582 strlcpy(part->disk->d_ident, sc->card_sn_string,
1583 MIN(sizeof(part->disk->d_ident), sizeof(sc->card_sn_string)));
1584 part->disk->d_hba_vendor = cpi.hba_vendor;
1585 part->disk->d_hba_device = cpi.hba_device;
1586 part->disk->d_hba_subvendor = cpi.hba_subvendor;
1587 part->disk->d_hba_subdevice = cpi.hba_subdevice;
1588 snprintf(part->disk->d_attachment, sizeof(part->disk->d_attachment),
1589 "%s%d", cpi.dev_name, cpi.unit_number);
1590
1591 part->disk->d_sectorsize = mmc_get_sector_size(periph);
1592 part->disk->d_mediasize = media_size;
1593 part->disk->d_stripesize = 0;
1594 part->disk->d_fwsectors = 0;
1595 part->disk->d_fwheads = 0;
1596
1597 if (sdda_mmcsd_compat) {
1598 char cname[SDDA_PART_NAMELEN]; /* This equals the mmcsd namelen. */
1599 snprintf(cname, sizeof(cname), name, "mmcsd", periph->unit_number);
1600 disk_add_alias(part->disk, cname);
1601 }
1602
1603 /*
1604 * Acquire a reference to the periph before we register with GEOM.
1605 * We'll release this reference once GEOM calls us back (via
1606 * sddadiskgonecb()) telling us that our provider has been freed.
1607 */
1608 if (cam_periph_acquire(periph) != 0) {
1609 xpt_print(periph->path, "%s: lost periph during "
1610 "registration!\n", __func__);
1611 cam_periph_lock(periph);
1612 return (false);
1613 }
1614 disk_create(part->disk, DISK_VERSION);
1615 cam_periph_lock(periph);
1616 cam_periph_unhold(periph);
1617
1618 return (true);
1619 }
1620
1621 /*
1622 * For MMC cards, process EXT_CSD and add partitions that are supported by
1623 * this device.
1624 */
1625 static void
sdda_process_mmc_partitions(struct cam_periph * periph,union ccb * ccb)1626 sdda_process_mmc_partitions(struct cam_periph *periph, union ccb *ccb)
1627 {
1628 struct sdda_softc *sc = (struct sdda_softc *)periph->softc;
1629 struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
1630 off_t erase_size, sector_size, size, wp_size;
1631 int i;
1632 const uint8_t *ext_csd;
1633 uint8_t rev;
1634 bool comp, ro;
1635
1636 ext_csd = sc->raw_ext_csd;
1637
1638 /*
1639 * Enhanced user data area and general purpose partitions are only
1640 * supported in revision 1.4 (EXT_CSD_REV == 4) and later, the RPMB
1641 * partition in revision 1.5 (MMC v4.41, EXT_CSD_REV == 5) and later.
1642 */
1643 rev = ext_csd[EXT_CSD_REV];
1644
1645 /*
1646 * Ignore user-creatable enhanced user data area and general purpose
1647 * partitions partitions as long as partitioning hasn't been finished.
1648 */
1649 comp = (ext_csd[EXT_CSD_PART_SET] & EXT_CSD_PART_SET_COMPLETED) != 0;
1650
1651 /*
1652 * Add enhanced user data area slice, unless it spans the entirety of
1653 * the user data area. The enhanced area is of a multiple of high
1654 * capacity write protect groups ((ERASE_GRP_SIZE + HC_WP_GRP_SIZE) *
1655 * 512 KB) and its offset given in either sectors or bytes, depending
1656 * on whether it's a high capacity device or not.
1657 * NB: The slicer and its slices need to be registered before adding
1658 * the disk for the corresponding user data area as re-tasting is
1659 * racy.
1660 */
1661 sector_size = mmc_get_sector_size(periph);
1662 size = ext_csd[EXT_CSD_ENH_SIZE_MULT] +
1663 (ext_csd[EXT_CSD_ENH_SIZE_MULT + 1] << 8) +
1664 (ext_csd[EXT_CSD_ENH_SIZE_MULT + 2] << 16);
1665 if (rev >= 4 && comp == TRUE && size > 0 &&
1666 (ext_csd[EXT_CSD_PART_SUPPORT] &
1667 EXT_CSD_PART_SUPPORT_ENH_ATTR_EN) != 0 &&
1668 (ext_csd[EXT_CSD_PART_ATTR] & (EXT_CSD_PART_ATTR_ENH_USR)) != 0) {
1669 erase_size = ext_csd[EXT_CSD_ERASE_GRP_SIZE] * 1024 *
1670 MMC_SECTOR_SIZE;
1671 wp_size = ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1672 size *= erase_size * wp_size;
1673 if (size != mmc_get_media_size(periph) * sector_size) {
1674 sc->enh_size = size;
1675 sc->enh_base = (ext_csd[EXT_CSD_ENH_START_ADDR] +
1676 (ext_csd[EXT_CSD_ENH_START_ADDR + 1] << 8) +
1677 (ext_csd[EXT_CSD_ENH_START_ADDR + 2] << 16) +
1678 (ext_csd[EXT_CSD_ENH_START_ADDR + 3] << 24)) *
1679 ((mmcp->card_features & CARD_FEATURE_SDHC) ? 1: MMC_SECTOR_SIZE);
1680 } else
1681 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH,
1682 ("enhanced user data area spans entire device"));
1683 }
1684
1685 /*
1686 * Add default partition. This may be the only one or the user
1687 * data area in case partitions are supported.
1688 */
1689 ro = sdda_get_read_only(periph, ccb);
1690 sdda_add_part(periph, EXT_CSD_PART_CONFIG_ACC_DEFAULT, SDDA_FMT,
1691 periph->unit_number, mmc_get_media_size(periph), ro);
1692 sc->part_curr = EXT_CSD_PART_CONFIG_ACC_DEFAULT;
1693
1694 if (mmc_get_spec_vers(periph) < 3)
1695 return;
1696
1697 /* Belatedly announce enhanced user data slice. */
1698 if (sc->enh_size != 0) {
1699 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH,
1700 ("enhanced user data area off 0x%jx size %ju bytes\n",
1701 sc->enh_base, sc->enh_size));
1702 }
1703
1704 /*
1705 * Determine partition switch timeout (provided in units of 10 ms)
1706 * and ensure it's at least 300 ms as some eMMC chips lie.
1707 */
1708 sc->part_time = max(ext_csd[EXT_CSD_PART_SWITCH_TO] * 10 * 1000,
1709 300 * 1000);
1710
1711 /* Add boot partitions, which are of a fixed multiple of 128 KB. */
1712 size = ext_csd[EXT_CSD_BOOT_SIZE_MULT] * MMC_BOOT_RPMB_BLOCK_SIZE;
1713 if (size > 0 && (sdda_get_host_caps(periph, ccb) & MMC_CAP_BOOT_NOACC) == 0) {
1714 sdda_add_part(periph, EXT_CSD_PART_CONFIG_ACC_BOOT0,
1715 SDDA_FMT_BOOT, 0, size,
1716 ro | ((ext_csd[EXT_CSD_BOOT_WP_STATUS] &
1717 EXT_CSD_BOOT_WP_STATUS_BOOT0_MASK) != 0));
1718 sdda_add_part(periph, EXT_CSD_PART_CONFIG_ACC_BOOT1,
1719 SDDA_FMT_BOOT, 1, size,
1720 ro | ((ext_csd[EXT_CSD_BOOT_WP_STATUS] &
1721 EXT_CSD_BOOT_WP_STATUS_BOOT1_MASK) != 0));
1722 }
1723
1724 /* Add RPMB partition, which also is of a fixed multiple of 128 KB. */
1725 size = ext_csd[EXT_CSD_RPMB_MULT] * MMC_BOOT_RPMB_BLOCK_SIZE;
1726 if (rev >= 5 && size > 0)
1727 sdda_add_part(periph, EXT_CSD_PART_CONFIG_ACC_RPMB,
1728 SDDA_FMT_RPMB, 0, size, ro);
1729
1730 if (rev <= 3 || comp == FALSE)
1731 return;
1732
1733 /*
1734 * Add general purpose partitions, which are of a multiple of high
1735 * capacity write protect groups, too.
1736 */
1737 if ((ext_csd[EXT_CSD_PART_SUPPORT] & EXT_CSD_PART_SUPPORT_EN) != 0) {
1738 erase_size = ext_csd[EXT_CSD_ERASE_GRP_SIZE] * 1024 *
1739 MMC_SECTOR_SIZE;
1740 wp_size = ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
1741 for (i = 0; i < MMC_PART_GP_MAX; i++) {
1742 size = ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3] +
1743 (ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3 + 1] << 8) +
1744 (ext_csd[EXT_CSD_GP_SIZE_MULT + i * 3 + 2] << 16);
1745 if (size == 0)
1746 continue;
1747 sdda_add_part(periph, EXT_CSD_PART_CONFIG_ACC_GP0 + i,
1748 SDDA_FMT_GP, i, size * erase_size * wp_size, ro);
1749 }
1750 }
1751 }
1752
1753 /*
1754 * We cannot just call mmc_switch() since it will sleep, and we are in
1755 * GEOM context and cannot sleep. Instead, create an MMCIO request to switch
1756 * partitions and send it to h/w, and upon completion resume processing
1757 * the I/O queue.
1758 * This function cannot fail, instead check switch errors in sddadone().
1759 */
1760 static void
sdda_init_switch_part(struct cam_periph * periph,union ccb * start_ccb,uint8_t part)1761 sdda_init_switch_part(struct cam_periph *periph, union ccb *start_ccb,
1762 uint8_t part)
1763 {
1764 struct sdda_softc *sc = (struct sdda_softc *)periph->softc;
1765 uint8_t value;
1766
1767 KASSERT(part < MMC_PART_MAX, ("%s: invalid partition index", __func__));
1768 sc->part_requested = part;
1769
1770 value = (sc->raw_ext_csd[EXT_CSD_PART_CONFIG] &
1771 ~EXT_CSD_PART_CONFIG_ACC_MASK) | part;
1772
1773 mmc_switch_fill_mmcio(start_ccb, EXT_CSD_CMD_SET_NORMAL,
1774 EXT_CSD_PART_CONFIG, value, sc->part_time);
1775 start_ccb->ccb_h.cbfcnp = sddadone;
1776
1777 sc->outstanding_cmds++;
1778 cam_periph_unlock(periph);
1779 xpt_action(start_ccb);
1780 cam_periph_lock(periph);
1781 }
1782
1783 /* Called with periph lock held! */
1784 static void
sddastart(struct cam_periph * periph,union ccb * start_ccb)1785 sddastart(struct cam_periph *periph, union ccb *start_ccb)
1786 {
1787 struct bio *bp;
1788 struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
1789 struct sdda_part *part;
1790 struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
1791 uint8_t part_index;
1792
1793 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddastart\n"));
1794
1795 if (softc->state != SDDA_STATE_NORMAL) {
1796 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("device is not in SDDA_STATE_NORMAL yet\n"));
1797 xpt_release_ccb(start_ccb);
1798 return;
1799 }
1800
1801 /* Find partition that has outstanding commands. Prefer current partition. */
1802 part_index = softc->part_curr;
1803 part = softc->part[softc->part_curr];
1804 bp = bioq_first(&part->bio_queue);
1805 if (bp == NULL) {
1806 for (part_index = 0; part_index < MMC_PART_MAX; part_index++) {
1807 if ((part = softc->part[part_index]) != NULL &&
1808 (bp = bioq_first(&softc->part[part_index]->bio_queue)) != NULL)
1809 break;
1810 }
1811 }
1812 if (bp == NULL) {
1813 xpt_release_ccb(start_ccb);
1814 return;
1815 }
1816 if (part_index != softc->part_curr) {
1817 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH,
1818 ("Partition %d -> %d\n", softc->part_curr, part_index));
1819 /*
1820 * According to section "6.2.2 Command restrictions" of the eMMC
1821 * specification v5.1, CMD19/CMD21 aren't allowed to be used with
1822 * RPMB partitions. So we pause re-tuning along with triggering
1823 * it up-front to decrease the likelihood of re-tuning becoming
1824 * necessary while accessing an RPMB partition. Consequently, an
1825 * RPMB partition should immediately be switched away from again
1826 * after an access in order to allow for re-tuning to take place
1827 * anew.
1828 */
1829 /* TODO: pause retune if switching to RPMB partition */
1830 softc->state = SDDA_STATE_PART_SWITCH;
1831 sdda_init_switch_part(periph, start_ccb, part_index);
1832 return;
1833 }
1834
1835 bioq_remove(&part->bio_queue, bp);
1836
1837 switch (bp->bio_cmd) {
1838 case BIO_WRITE:
1839 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("BIO_WRITE\n"));
1840 part->flags |= SDDA_FLAG_DIRTY;
1841 /* FALLTHROUGH */
1842 case BIO_READ:
1843 {
1844 struct ccb_mmcio *mmcio;
1845 uint64_t blockno = bp->bio_pblkno;
1846 uint16_t count = bp->bio_bcount / MMC_SECTOR_SIZE;
1847 uint16_t opcode;
1848
1849 if (bp->bio_cmd == BIO_READ)
1850 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("BIO_READ\n"));
1851 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1852 ("Block %"PRIu64" cnt %u\n", blockno, count));
1853
1854 /* Construct new MMC command */
1855 if (bp->bio_cmd == BIO_READ) {
1856 if (count > 1)
1857 opcode = MMC_READ_MULTIPLE_BLOCK;
1858 else
1859 opcode = MMC_READ_SINGLE_BLOCK;
1860 } else {
1861 if (count > 1)
1862 opcode = MMC_WRITE_MULTIPLE_BLOCK;
1863 else
1864 opcode = MMC_WRITE_BLOCK;
1865 }
1866
1867 start_ccb->ccb_h.func_code = XPT_MMC_IO;
1868 start_ccb->ccb_h.flags = (bp->bio_cmd == BIO_READ ? CAM_DIR_IN : CAM_DIR_OUT);
1869 start_ccb->ccb_h.retry_count = 0;
1870 start_ccb->ccb_h.timeout = 15 * 1000;
1871 start_ccb->ccb_h.cbfcnp = sddadone;
1872
1873 mmcio = &start_ccb->mmcio;
1874 mmcio->cmd.opcode = opcode;
1875 mmcio->cmd.arg = blockno;
1876 if (!(mmcp->card_features & CARD_FEATURE_SDHC))
1877 mmcio->cmd.arg <<= 9;
1878
1879 mmcio->cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1880 mmcio->cmd.data = softc->mmcdata;
1881 memset(mmcio->cmd.data, 0, sizeof(struct mmc_data));
1882 mmcio->cmd.data->data = bp->bio_data;
1883 mmcio->cmd.data->len = MMC_SECTOR_SIZE * count;
1884 mmcio->cmd.data->flags = (bp->bio_cmd == BIO_READ ? MMC_DATA_READ : MMC_DATA_WRITE);
1885 /* Direct h/w to issue CMD12 upon completion */
1886 if (count > 1) {
1887 mmcio->cmd.data->flags |= MMC_DATA_MULTI;
1888 mmcio->stop.opcode = MMC_STOP_TRANSMISSION;
1889 mmcio->stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
1890 mmcio->stop.arg = 0;
1891 }
1892
1893 break;
1894 }
1895 case BIO_FLUSH:
1896 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("BIO_FLUSH\n"));
1897 sddaschedule(periph);
1898 break;
1899 case BIO_DELETE:
1900 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("BIO_DELETE\n"));
1901 sddaschedule(periph);
1902 break;
1903 default:
1904 biofinish(bp, NULL, EOPNOTSUPP);
1905 xpt_release_ccb(start_ccb);
1906 return;
1907 }
1908 start_ccb->ccb_h.ccb_bp = bp;
1909 softc->outstanding_cmds++;
1910 softc->refcount++;
1911 cam_periph_unlock(periph);
1912 xpt_action(start_ccb);
1913 cam_periph_lock(periph);
1914
1915 /* May have more work to do, so ensure we stay scheduled */
1916 sddaschedule(periph);
1917 }
1918
1919 static void
sddadone(struct cam_periph * periph,union ccb * done_ccb)1920 sddadone(struct cam_periph *periph, union ccb *done_ccb)
1921 {
1922 struct bio *bp;
1923 struct sdda_softc *softc;
1924 struct ccb_mmcio *mmcio;
1925 struct cam_path *path;
1926 uint32_t card_status;
1927 int error = 0;
1928
1929 softc = (struct sdda_softc *)periph->softc;
1930 mmcio = &done_ccb->mmcio;
1931 path = done_ccb->ccb_h.path;
1932
1933 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("sddadone\n"));
1934 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1935 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("Error!!!\n"));
1936 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1937 cam_release_devq(path,
1938 /*relsim_flags*/0,
1939 /*reduction*/0,
1940 /*timeout*/0,
1941 /*getcount_only*/0);
1942 error = EIO;
1943 } else {
1944 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1945 panic("REQ_CMP with QFRZN");
1946 error = 0;
1947 }
1948
1949 card_status = mmcio->cmd.resp[0];
1950 CAM_DEBUG(path, CAM_DEBUG_TRACE,
1951 ("Card status: %08x\n", R1_STATUS(card_status)));
1952 CAM_DEBUG(path, CAM_DEBUG_TRACE,
1953 ("Current state: %d\n", R1_CURRENT_STATE(card_status)));
1954
1955 /* Process result of switching MMC partitions */
1956 if (softc->state == SDDA_STATE_PART_SWITCH) {
1957 CAM_DEBUG(path, CAM_DEBUG_TRACE,
1958 ("Completing partition switch to %d\n",
1959 softc->part_requested));
1960 softc->outstanding_cmds--;
1961 /* Complete partition switch */
1962 softc->state = SDDA_STATE_NORMAL;
1963 if (error != 0) {
1964 /* TODO: Unpause retune if accessing RPMB */
1965 xpt_release_ccb(done_ccb);
1966 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1967 return;
1968 }
1969
1970 softc->raw_ext_csd[EXT_CSD_PART_CONFIG] =
1971 (softc->raw_ext_csd[EXT_CSD_PART_CONFIG] &
1972 ~EXT_CSD_PART_CONFIG_ACC_MASK) | softc->part_requested;
1973 /* TODO: Unpause retune if accessing RPMB */
1974 softc->part_curr = softc->part_requested;
1975 xpt_release_ccb(done_ccb);
1976
1977 /* Return to processing BIO requests */
1978 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1979 return;
1980 }
1981
1982 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1983 bp->bio_error = error;
1984 if (error != 0) {
1985 bp->bio_resid = bp->bio_bcount;
1986 bp->bio_flags |= BIO_ERROR;
1987 } else {
1988 /* XXX: How many bytes remaining? */
1989 bp->bio_resid = 0;
1990 if (bp->bio_resid > 0)
1991 bp->bio_flags |= BIO_ERROR;
1992 }
1993
1994 softc->outstanding_cmds--;
1995 xpt_release_ccb(done_ccb);
1996 /*
1997 * Release the periph refcount taken in sddastart() for each CCB.
1998 */
1999 KASSERT(softc->refcount >= 1, ("sddadone softc %p refcount %d", softc, softc->refcount));
2000 softc->refcount--;
2001 biodone(bp);
2002 }
2003
2004 static int
sddaerror(union ccb * ccb,uint32_t cam_flags,uint32_t sense_flags)2005 sddaerror(union ccb *ccb, uint32_t cam_flags, uint32_t sense_flags)
2006 {
2007 return(cam_periph_error(ccb, cam_flags, sense_flags));
2008 }
2009
2010 static int
sddadump(void * arg,void * virtual,off_t offset,size_t length)2011 sddadump(void *arg, void *virtual, off_t offset, size_t length)
2012 {
2013 struct ccb_mmcio mmcio;
2014 struct disk *dp;
2015 struct sdda_part *part;
2016 struct sdda_softc *softc;
2017 struct cam_periph *periph;
2018 struct mmc_params *mmcp;
2019 uint16_t count;
2020 uint16_t opcode;
2021 int error;
2022
2023 dp = arg;
2024 part = dp->d_drv1;
2025 softc = part->sc;
2026 periph = softc->periph;
2027 mmcp = &periph->path->device->mmc_ident_data;
2028
2029 if (softc->state != SDDA_STATE_NORMAL)
2030 return (ENXIO);
2031
2032 count = length / MMC_SECTOR_SIZE;
2033 if (count == 0)
2034 return (0);
2035
2036 if (softc->part[softc->part_curr] != part)
2037 return (EIO); /* TODO implement polled partition switch */
2038
2039 memset(&mmcio, 0, sizeof(mmcio));
2040 xpt_setup_ccb(&mmcio.ccb_h, periph->path, CAM_PRIORITY_NORMAL); /* XXX needed? */
2041
2042 mmcio.ccb_h.func_code = XPT_MMC_IO;
2043 mmcio.ccb_h.flags = CAM_DIR_OUT;
2044 mmcio.ccb_h.retry_count = 0;
2045 mmcio.ccb_h.timeout = 15 * 1000;
2046
2047 if (count > 1)
2048 opcode = MMC_WRITE_MULTIPLE_BLOCK;
2049 else
2050 opcode = MMC_WRITE_BLOCK;
2051 mmcio.cmd.opcode = opcode;
2052 mmcio.cmd.arg = offset / MMC_SECTOR_SIZE;
2053 if (!(mmcp->card_features & CARD_FEATURE_SDHC))
2054 mmcio.cmd.arg <<= 9;
2055
2056 mmcio.cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
2057 mmcio.cmd.data = softc->mmcdata;
2058 memset(mmcio.cmd.data, 0, sizeof(struct mmc_data));
2059 mmcio.cmd.data->data = virtual;
2060 mmcio.cmd.data->len = MMC_SECTOR_SIZE * count;
2061 mmcio.cmd.data->flags = MMC_DATA_WRITE;
2062
2063 /* Direct h/w to issue CMD12 upon completion */
2064 if (count > 1) {
2065 mmcio.cmd.data->flags |= MMC_DATA_MULTI;
2066 mmcio.stop.opcode = MMC_STOP_TRANSMISSION;
2067 mmcio.stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
2068 mmcio.stop.arg = 0;
2069 }
2070
2071 error = cam_periph_runccb((union ccb *)&mmcio, cam_periph_error,
2072 0, SF_NO_RECOVERY | SF_NO_RETRY, NULL);
2073 if (error != 0)
2074 printf("Aborting dump due to I/O error.\n");
2075 return (error);
2076 }
2077
2078 #endif /* _KERNEL */
2079