2
* SD Association Host Standard Specification v2.0 controller emulation
4
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
5
* Mitsyanko Igor <i.mitsyanko@samsung.com>
6
* Peter A.G. Crosthwaite <peter.crosthwaite@petalogix.com>
8
* Based on MMC controller for Samsung S5PC1xx-based board emulation
9
* by Alexey Merkulov and Vladimir Monakhov.
11
* This program is free software; you can redistribute it and/or modify it
12
* under the terms of the GNU General Public License as published by the
13
* Free Software Foundation; either version 2 of the License, or (at your
14
* option) any later version.
16
* This program is distributed in the hope that it will be useful,
17
* but WITHOUT ANY WARRANTY; without even the implied warranty of
18
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
19
* See the GNU General Public License for more details.
21
* You should have received a copy of the GNU General Public License along
22
* with this program; if not, see <http://www.gnu.org/licenses/>.
26
#include "sysemu/blockdev.h"
27
#include "sysemu/dma.h"
28
#include "qemu/timer.h"
29
#include "block/block_int.h"
30
#include "qemu/bitops.h"
34
/* host controller debug messages */
40
#define DPRINT_L1(fmt, args...) do { } while (0)
41
#define DPRINT_L2(fmt, args...) do { } while (0)
42
#define ERRPRINT(fmt, args...) do { } while (0)
44
#define DPRINT_L1(fmt, args...) \
45
do {fprintf(stderr, "QEMU SDHC: "fmt, ## args); } while (0)
46
#define DPRINT_L2(fmt, args...) do { } while (0)
47
#define ERRPRINT(fmt, args...) \
48
do {fprintf(stderr, "QEMU SDHC ERROR: "fmt, ## args); } while (0)
50
#define DPRINT_L1(fmt, args...) \
51
do {fprintf(stderr, "QEMU SDHC: "fmt, ## args); } while (0)
52
#define DPRINT_L2(fmt, args...) \
53
do {fprintf(stderr, "QEMU SDHC: "fmt, ## args); } while (0)
54
#define ERRPRINT(fmt, args...) \
55
do {fprintf(stderr, "QEMU SDHC ERROR: "fmt, ## args); } while (0)
58
/* Default SD/MMC host controller features information, which will be
59
* presented in CAPABILITIES register of generic SD host controller at reset.
60
* If not stated otherwise:
61
* 0 - not supported, 1 - supported, other - prohibited.
63
#define SDHC_CAPAB_64BITBUS 0ul /* 64-bit System Bus Support */
64
#define SDHC_CAPAB_18V 1ul /* Voltage support 1.8v */
65
#define SDHC_CAPAB_30V 0ul /* Voltage support 3.0v */
66
#define SDHC_CAPAB_33V 1ul /* Voltage support 3.3v */
67
#define SDHC_CAPAB_SUSPRESUME 0ul /* Suspend/resume support */
68
#define SDHC_CAPAB_SDMA 1ul /* SDMA support */
69
#define SDHC_CAPAB_HIGHSPEED 1ul /* High speed support */
70
#define SDHC_CAPAB_ADMA1 1ul /* ADMA1 support */
71
#define SDHC_CAPAB_ADMA2 1ul /* ADMA2 support */
72
/* Maximum host controller R/W buffers size
73
* Possible values: 512, 1024, 2048 bytes */
74
#define SDHC_CAPAB_MAXBLOCKLENGTH 512ul
75
/* Maximum clock frequency for SDclock in MHz
76
* value in range 10-63 MHz, 0 - not defined */
77
#define SDHC_CAPAB_BASECLKFREQ 0ul
78
#define SDHC_CAPAB_TOUNIT 1ul /* Timeout clock unit 0 - kHz, 1 - MHz */
79
/* Timeout clock frequency 1-63, 0 - not defined */
80
#define SDHC_CAPAB_TOCLKFREQ 0ul
82
/* Now check all parameters and calculate CAPABILITIES REGISTER value */
83
#if SDHC_CAPAB_64BITBUS > 1 || SDHC_CAPAB_18V > 1 || SDHC_CAPAB_30V > 1 || \
84
SDHC_CAPAB_33V > 1 || SDHC_CAPAB_SUSPRESUME > 1 || SDHC_CAPAB_SDMA > 1 || \
85
SDHC_CAPAB_HIGHSPEED > 1 || SDHC_CAPAB_ADMA2 > 1 || SDHC_CAPAB_ADMA1 > 1 ||\
87
#error Capabilities features can have value 0 or 1 only!
90
#if SDHC_CAPAB_MAXBLOCKLENGTH == 512
91
#define MAX_BLOCK_LENGTH 0ul
92
#elif SDHC_CAPAB_MAXBLOCKLENGTH == 1024
93
#define MAX_BLOCK_LENGTH 1ul
94
#elif SDHC_CAPAB_MAXBLOCKLENGTH == 2048
95
#define MAX_BLOCK_LENGTH 2ul
97
#error Max host controller block size can have value 512, 1024 or 2048 only!
100
#if (SDHC_CAPAB_BASECLKFREQ > 0 && SDHC_CAPAB_BASECLKFREQ < 10) || \
101
SDHC_CAPAB_BASECLKFREQ > 63
102
#error SDclock frequency can have value in range 0, 10-63 only!
105
#if SDHC_CAPAB_TOCLKFREQ > 63
106
#error Timeout clock frequency can have value in range 0-63 only!
109
#define SDHC_CAPAB_REG_DEFAULT \
110
((SDHC_CAPAB_64BITBUS << 28) | (SDHC_CAPAB_18V << 26) | \
111
(SDHC_CAPAB_30V << 25) | (SDHC_CAPAB_33V << 24) | \
112
(SDHC_CAPAB_SUSPRESUME << 23) | (SDHC_CAPAB_SDMA << 22) | \
113
(SDHC_CAPAB_HIGHSPEED << 21) | (SDHC_CAPAB_ADMA1 << 20) | \
114
(SDHC_CAPAB_ADMA2 << 19) | (MAX_BLOCK_LENGTH << 16) | \
115
(SDHC_CAPAB_BASECLKFREQ << 8) | (SDHC_CAPAB_TOUNIT << 7) | \
116
(SDHC_CAPAB_TOCLKFREQ))
118
#define MASKED_WRITE(reg, mask, val) (reg = (reg & (mask)) | (val))
120
static uint8_t sdhci_slotint(SDHCIState *s)
122
return (s->norintsts & s->norintsigen) || (s->errintsts & s->errintsigen) ||
123
((s->norintsts & SDHC_NIS_INSERT) && (s->wakcon & SDHC_WKUP_ON_INS)) ||
124
((s->norintsts & SDHC_NIS_REMOVE) && (s->wakcon & SDHC_WKUP_ON_RMV));
127
static inline void sdhci_update_irq(SDHCIState *s)
129
qemu_set_irq(s->irq, sdhci_slotint(s));
132
static void sdhci_raise_insertion_irq(void *opaque)
134
SDHCIState *s = (SDHCIState *)opaque;
136
if (s->norintsts & SDHC_NIS_REMOVE) {
137
timer_mod(s->insert_timer,
138
qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_INSERTION_DELAY);
140
s->prnsts = 0x1ff0000;
141
if (s->norintstsen & SDHC_NISEN_INSERT) {
142
s->norintsts |= SDHC_NIS_INSERT;
148
static void sdhci_insert_eject_cb(void *opaque, int irq, int level)
150
SDHCIState *s = (SDHCIState *)opaque;
151
DPRINT_L1("Card state changed: %s!\n", level ? "insert" : "eject");
153
if ((s->norintsts & SDHC_NIS_REMOVE) && level) {
154
/* Give target some time to notice card ejection */
155
timer_mod(s->insert_timer,
156
qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_INSERTION_DELAY);
159
s->prnsts = 0x1ff0000;
160
if (s->norintstsen & SDHC_NISEN_INSERT) {
161
s->norintsts |= SDHC_NIS_INSERT;
164
s->prnsts = 0x1fa0000;
165
s->pwrcon &= ~SDHC_POWER_ON;
166
s->clkcon &= ~SDHC_CLOCK_SDCLK_EN;
167
if (s->norintstsen & SDHC_NISEN_REMOVE) {
168
s->norintsts |= SDHC_NIS_REMOVE;
175
static void sdhci_card_readonly_cb(void *opaque, int irq, int level)
177
SDHCIState *s = (SDHCIState *)opaque;
180
s->prnsts &= ~SDHC_WRITE_PROTECT;
183
s->prnsts |= SDHC_WRITE_PROTECT;
187
static void sdhci_reset(SDHCIState *s)
189
timer_del(s->insert_timer);
190
timer_del(s->transfer_timer);
191
/* Set all registers to 0. Capabilities registers are not cleared
192
* and assumed to always preserve their value, given to them during
194
memset(&s->sdmasysad, 0, (uintptr_t)&s->capareg - (uintptr_t)&s->sdmasysad);
196
sd_set_cb(s->card, s->ro_cb, s->eject_cb);
198
s->stopped_state = sdhc_not_stopped;
201
static void sdhci_do_data_transfer(void *opaque)
203
SDHCIState *s = (SDHCIState *)opaque;
205
SDHCI_GET_CLASS(s)->data_transfer(s);
208
static void sdhci_send_command(SDHCIState *s)
211
uint8_t response[16];
216
request.cmd = s->cmdreg >> 8;
217
request.arg = s->argument;
218
DPRINT_L1("sending CMD%u ARG[0x%08x]\n", request.cmd, request.arg);
219
rlen = sd_do_command(s->card, &request, response);
221
if (s->cmdreg & SDHC_CMD_RESPONSE) {
223
s->rspreg[0] = (response[0] << 24) | (response[1] << 16) |
224
(response[2] << 8) | response[3];
225
s->rspreg[1] = s->rspreg[2] = s->rspreg[3] = 0;
226
DPRINT_L1("Response: RSPREG[31..0]=0x%08x\n", s->rspreg[0]);
227
} else if (rlen == 16) {
228
s->rspreg[0] = (response[11] << 24) | (response[12] << 16) |
229
(response[13] << 8) | response[14];
230
s->rspreg[1] = (response[7] << 24) | (response[8] << 16) |
231
(response[9] << 8) | response[10];
232
s->rspreg[2] = (response[3] << 24) | (response[4] << 16) |
233
(response[5] << 8) | response[6];
234
s->rspreg[3] = (response[0] << 16) | (response[1] << 8) |
236
DPRINT_L1("Response received:\n RSPREG[127..96]=0x%08x, RSPREG[95.."
237
"64]=0x%08x,\n RSPREG[63..32]=0x%08x, RSPREG[31..0]=0x%08x\n",
238
s->rspreg[3], s->rspreg[2], s->rspreg[1], s->rspreg[0]);
240
ERRPRINT("Timeout waiting for command response\n");
241
if (s->errintstsen & SDHC_EISEN_CMDTIMEOUT) {
242
s->errintsts |= SDHC_EIS_CMDTIMEOUT;
243
s->norintsts |= SDHC_NIS_ERR;
247
if ((s->norintstsen & SDHC_NISEN_TRSCMP) &&
248
(s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY) {
249
s->norintsts |= SDHC_NIS_TRSCMP;
251
} else if (rlen != 0 && (s->errintstsen & SDHC_EISEN_CMDIDX)) {
252
s->errintsts |= SDHC_EIS_CMDIDX;
253
s->norintsts |= SDHC_NIS_ERR;
256
if (s->norintstsen & SDHC_NISEN_CMDCMP) {
257
s->norintsts |= SDHC_NIS_CMDCMP;
262
if (s->blksize && (s->cmdreg & SDHC_CMD_DATA_PRESENT)) {
264
sdhci_do_data_transfer(s);
268
static void sdhci_end_transfer(SDHCIState *s)
270
/* Automatically send CMD12 to stop transfer if AutoCMD12 enabled */
271
if ((s->trnmod & SDHC_TRNS_ACMD12) != 0) {
273
uint8_t response[16];
277
DPRINT_L1("Automatically issue CMD%d %08x\n", request.cmd, request.arg);
278
sd_do_command(s->card, &request, response);
279
/* Auto CMD12 response goes to the upper Response register */
280
s->rspreg[3] = (response[0] << 24) | (response[1] << 16) |
281
(response[2] << 8) | response[3];
284
s->prnsts &= ~(SDHC_DOING_READ | SDHC_DOING_WRITE |
285
SDHC_DAT_LINE_ACTIVE | SDHC_DATA_INHIBIT |
286
SDHC_SPACE_AVAILABLE | SDHC_DATA_AVAILABLE);
288
if (s->norintstsen & SDHC_NISEN_TRSCMP) {
289
s->norintsts |= SDHC_NIS_TRSCMP;
296
* Programmed i/o data transfer
299
/* Fill host controller's read buffer with BLKSIZE bytes of data from card */
300
static void sdhci_read_block_from_card(SDHCIState *s)
304
if ((s->trnmod & SDHC_TRNS_MULTI) &&
305
(s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) {
309
for (index = 0; index < (s->blksize & 0x0fff); index++) {
310
s->fifo_buffer[index] = sd_read_data(s->card);
313
/* New data now available for READ through Buffer Port Register */
314
s->prnsts |= SDHC_DATA_AVAILABLE;
315
if (s->norintstsen & SDHC_NISEN_RBUFRDY) {
316
s->norintsts |= SDHC_NIS_RBUFRDY;
319
/* Clear DAT line active status if that was the last block */
320
if ((s->trnmod & SDHC_TRNS_MULTI) == 0 ||
321
((s->trnmod & SDHC_TRNS_MULTI) && s->blkcnt == 1)) {
322
s->prnsts &= ~SDHC_DAT_LINE_ACTIVE;
325
/* If stop at block gap request was set and it's not the last block of
326
* data - generate Block Event interrupt */
327
if (s->stopped_state == sdhc_gap_read && (s->trnmod & SDHC_TRNS_MULTI) &&
329
s->prnsts &= ~SDHC_DAT_LINE_ACTIVE;
330
if (s->norintstsen & SDHC_EISEN_BLKGAP) {
331
s->norintsts |= SDHC_EIS_BLKGAP;
338
/* Read @size byte of data from host controller @s BUFFER DATA PORT register */
339
static uint32_t sdhci_read_dataport(SDHCIState *s, unsigned size)
344
/* first check that a valid data exists in host controller input buffer */
345
if ((s->prnsts & SDHC_DATA_AVAILABLE) == 0) {
346
ERRPRINT("Trying to read from empty buffer\n");
350
for (i = 0; i < size; i++) {
351
value |= s->fifo_buffer[s->data_count] << i * 8;
353
/* check if we've read all valid data (blksize bytes) from buffer */
354
if ((s->data_count) >= (s->blksize & 0x0fff)) {
355
DPRINT_L2("All %u bytes of data have been read from input buffer\n",
357
s->prnsts &= ~SDHC_DATA_AVAILABLE; /* no more data in a buffer */
358
s->data_count = 0; /* next buff read must start at position [0] */
360
if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
364
/* if that was the last block of data */
365
if ((s->trnmod & SDHC_TRNS_MULTI) == 0 ||
366
((s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) ||
367
/* stop at gap request */
368
(s->stopped_state == sdhc_gap_read &&
369
!(s->prnsts & SDHC_DAT_LINE_ACTIVE))) {
370
SDHCI_GET_CLASS(s)->end_data_transfer(s);
371
} else { /* if there are more data, read next block from card */
372
SDHCI_GET_CLASS(s)->read_block_from_card(s);
381
/* Write data from host controller FIFO to card */
382
static void sdhci_write_block_to_card(SDHCIState *s)
386
if (s->prnsts & SDHC_SPACE_AVAILABLE) {
387
if (s->norintstsen & SDHC_NISEN_WBUFRDY) {
388
s->norintsts |= SDHC_NIS_WBUFRDY;
394
if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
395
if (s->blkcnt == 0) {
402
for (index = 0; index < (s->blksize & 0x0fff); index++) {
403
sd_write_data(s->card, s->fifo_buffer[index]);
406
/* Next data can be written through BUFFER DATORT register */
407
s->prnsts |= SDHC_SPACE_AVAILABLE;
409
/* Finish transfer if that was the last block of data */
410
if ((s->trnmod & SDHC_TRNS_MULTI) == 0 ||
411
((s->trnmod & SDHC_TRNS_MULTI) &&
412
(s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0))) {
413
SDHCI_GET_CLASS(s)->end_data_transfer(s);
414
} else if (s->norintstsen & SDHC_NISEN_WBUFRDY) {
415
s->norintsts |= SDHC_NIS_WBUFRDY;
418
/* Generate Block Gap Event if requested and if not the last block */
419
if (s->stopped_state == sdhc_gap_write && (s->trnmod & SDHC_TRNS_MULTI) &&
421
s->prnsts &= ~SDHC_DOING_WRITE;
422
if (s->norintstsen & SDHC_EISEN_BLKGAP) {
423
s->norintsts |= SDHC_EIS_BLKGAP;
425
SDHCI_GET_CLASS(s)->end_data_transfer(s);
431
/* Write @size bytes of @value data to host controller @s Buffer Data Port
433
static void sdhci_write_dataport(SDHCIState *s, uint32_t value, unsigned size)
437
/* Check that there is free space left in a buffer */
438
if (!(s->prnsts & SDHC_SPACE_AVAILABLE)) {
439
ERRPRINT("Can't write to data buffer: buffer full\n");
443
for (i = 0; i < size; i++) {
444
s->fifo_buffer[s->data_count] = value & 0xFF;
447
if (s->data_count >= (s->blksize & 0x0fff)) {
448
DPRINT_L2("write buffer filled with %u bytes of data\n",
451
s->prnsts &= ~SDHC_SPACE_AVAILABLE;
452
if (s->prnsts & SDHC_DOING_WRITE) {
453
SDHCI_GET_CLASS(s)->write_block_to_card(s);
460
* Single DMA data transfer
463
/* Multi block SDMA transfer */
464
static void sdhci_sdma_transfer_multi_blocks(SDHCIState *s)
466
bool page_aligned = false;
467
unsigned int n, begin;
468
const uint16_t block_size = s->blksize & 0x0fff;
469
uint32_t boundary_chk = 1 << (((s->blksize & 0xf000) >> 12) + 12);
470
uint32_t boundary_count = boundary_chk - (s->sdmasysad % boundary_chk);
472
/* XXX: Some sd/mmc drivers (for example, u-boot-slp) do not account for
473
* possible stop at page boundary if initial address is not page aligned,
474
* allow them to work properly */
475
if ((s->sdmasysad % boundary_chk) == 0) {
479
if (s->trnmod & SDHC_TRNS_READ) {
480
s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT |
481
SDHC_DAT_LINE_ACTIVE;
483
if (s->data_count == 0) {
484
for (n = 0; n < block_size; n++) {
485
s->fifo_buffer[n] = sd_read_data(s->card);
488
begin = s->data_count;
489
if (((boundary_count + begin) < block_size) && page_aligned) {
490
s->data_count = boundary_count + begin;
493
s->data_count = block_size;
494
boundary_count -= block_size - begin;
495
if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
499
dma_memory_write(&address_space_memory, s->sdmasysad,
500
&s->fifo_buffer[begin], s->data_count - begin);
501
s->sdmasysad += s->data_count - begin;
502
if (s->data_count == block_size) {
505
if (page_aligned && boundary_count == 0) {
510
s->prnsts |= SDHC_DOING_WRITE | SDHC_DATA_INHIBIT |
511
SDHC_DAT_LINE_ACTIVE;
513
begin = s->data_count;
514
if (((boundary_count + begin) < block_size) && page_aligned) {
515
s->data_count = boundary_count + begin;
518
s->data_count = block_size;
519
boundary_count -= block_size - begin;
521
dma_memory_read(&address_space_memory, s->sdmasysad,
522
&s->fifo_buffer[begin], s->data_count);
523
s->sdmasysad += s->data_count - begin;
524
if (s->data_count == block_size) {
525
for (n = 0; n < block_size; n++) {
526
sd_write_data(s->card, s->fifo_buffer[n]);
529
if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
533
if (page_aligned && boundary_count == 0) {
539
if (s->blkcnt == 0) {
540
SDHCI_GET_CLASS(s)->end_data_transfer(s);
542
if (s->norintstsen & SDHC_NISEN_DMA) {
543
s->norintsts |= SDHC_NIS_DMA;
549
/* single block SDMA transfer */
551
static void sdhci_sdma_transfer_single_block(SDHCIState *s)
554
uint32_t datacnt = s->blksize & 0x0fff;
556
if (s->trnmod & SDHC_TRNS_READ) {
557
for (n = 0; n < datacnt; n++) {
558
s->fifo_buffer[n] = sd_read_data(s->card);
560
dma_memory_write(&address_space_memory, s->sdmasysad, s->fifo_buffer,
563
dma_memory_read(&address_space_memory, s->sdmasysad, s->fifo_buffer,
565
for (n = 0; n < datacnt; n++) {
566
sd_write_data(s->card, s->fifo_buffer[n]);
570
if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
574
SDHCI_GET_CLASS(s)->end_data_transfer(s);
577
typedef struct ADMADescr {
584
static void get_adma_description(SDHCIState *s, ADMADescr *dscr)
588
hwaddr entry_addr = (hwaddr)s->admasysaddr;
589
switch (SDHC_DMA_TYPE(s->hostctl)) {
590
case SDHC_CTRL_ADMA2_32:
591
dma_memory_read(&address_space_memory, entry_addr, (uint8_t *)&adma2,
593
adma2 = le64_to_cpu(adma2);
594
/* The spec does not specify endianness of descriptor table.
595
* We currently assume that it is LE.
597
dscr->addr = (hwaddr)extract64(adma2, 32, 32) & ~0x3ull;
598
dscr->length = (uint16_t)extract64(adma2, 16, 16);
599
dscr->attr = (uint8_t)extract64(adma2, 0, 7);
602
case SDHC_CTRL_ADMA1_32:
603
dma_memory_read(&address_space_memory, entry_addr, (uint8_t *)&adma1,
605
adma1 = le32_to_cpu(adma1);
606
dscr->addr = (hwaddr)(adma1 & 0xFFFFF000);
607
dscr->attr = (uint8_t)extract32(adma1, 0, 7);
609
if ((dscr->attr & SDHC_ADMA_ATTR_ACT_MASK) == SDHC_ADMA_ATTR_SET_LEN) {
610
dscr->length = (uint16_t)extract32(adma1, 12, 16);
615
case SDHC_CTRL_ADMA2_64:
616
dma_memory_read(&address_space_memory, entry_addr,
617
(uint8_t *)(&dscr->attr), 1);
618
dma_memory_read(&address_space_memory, entry_addr + 2,
619
(uint8_t *)(&dscr->length), 2);
620
dscr->length = le16_to_cpu(dscr->length);
621
dma_memory_read(&address_space_memory, entry_addr + 4,
622
(uint8_t *)(&dscr->addr), 8);
623
dscr->attr = le64_to_cpu(dscr->attr);
624
dscr->attr &= 0xfffffff8;
630
/* Advanced DMA data transfer */
632
static void sdhci_do_adma(SDHCIState *s)
634
unsigned int n, begin, length;
635
const uint16_t block_size = s->blksize & 0x0fff;
639
for (i = 0; i < SDHC_ADMA_DESCS_PER_DELAY; ++i) {
640
s->admaerr &= ~SDHC_ADMAERR_LENGTH_MISMATCH;
642
get_adma_description(s, &dscr);
643
DPRINT_L2("ADMA loop: addr=" TARGET_FMT_plx ", len=%d, attr=%x\n",
644
dscr.addr, dscr.length, dscr.attr);
646
if ((dscr.attr & SDHC_ADMA_ATTR_VALID) == 0) {
647
/* Indicate that error occurred in ST_FDS state */
648
s->admaerr &= ~SDHC_ADMAERR_STATE_MASK;
649
s->admaerr |= SDHC_ADMAERR_STATE_ST_FDS;
651
/* Generate ADMA error interrupt */
652
if (s->errintstsen & SDHC_EISEN_ADMAERR) {
653
s->errintsts |= SDHC_EIS_ADMAERR;
654
s->norintsts |= SDHC_NIS_ERR;
661
length = dscr.length ? dscr.length : 65536;
663
switch (dscr.attr & SDHC_ADMA_ATTR_ACT_MASK) {
664
case SDHC_ADMA_ATTR_ACT_TRAN: /* data transfer */
666
if (s->trnmod & SDHC_TRNS_READ) {
668
if (s->data_count == 0) {
669
for (n = 0; n < block_size; n++) {
670
s->fifo_buffer[n] = sd_read_data(s->card);
673
begin = s->data_count;
674
if ((length + begin) < block_size) {
675
s->data_count = length + begin;
678
s->data_count = block_size;
679
length -= block_size - begin;
681
dma_memory_write(&address_space_memory, dscr.addr,
682
&s->fifo_buffer[begin],
683
s->data_count - begin);
684
dscr.addr += s->data_count - begin;
685
if (s->data_count == block_size) {
687
if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
689
if (s->blkcnt == 0) {
697
begin = s->data_count;
698
if ((length + begin) < block_size) {
699
s->data_count = length + begin;
702
s->data_count = block_size;
703
length -= block_size - begin;
705
dma_memory_read(&address_space_memory, dscr.addr,
706
&s->fifo_buffer[begin], s->data_count);
707
dscr.addr += s->data_count - begin;
708
if (s->data_count == block_size) {
709
for (n = 0; n < block_size; n++) {
710
sd_write_data(s->card, s->fifo_buffer[n]);
713
if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) {
715
if (s->blkcnt == 0) {
722
s->admasysaddr += dscr.incr;
724
case SDHC_ADMA_ATTR_ACT_LINK: /* link to next descriptor table */
725
s->admasysaddr = dscr.addr;
726
DPRINT_L1("ADMA link: admasysaddr=0x%lx\n", s->admasysaddr);
729
s->admasysaddr += dscr.incr;
733
if (dscr.attr & SDHC_ADMA_ATTR_INT) {
734
DPRINT_L1("ADMA interrupt: admasysaddr=0x%lx\n", s->admasysaddr);
735
if (s->norintstsen & SDHC_NISEN_DMA) {
736
s->norintsts |= SDHC_NIS_DMA;
742
/* ADMA transfer terminates if blkcnt == 0 or by END attribute */
743
if (((s->trnmod & SDHC_TRNS_BLK_CNT_EN) &&
744
(s->blkcnt == 0)) || (dscr.attr & SDHC_ADMA_ATTR_END)) {
745
DPRINT_L2("ADMA transfer completed\n");
746
if (length || ((dscr.attr & SDHC_ADMA_ATTR_END) &&
747
(s->trnmod & SDHC_TRNS_BLK_CNT_EN) &&
749
ERRPRINT("SD/MMC host ADMA length mismatch\n");
750
s->admaerr |= SDHC_ADMAERR_LENGTH_MISMATCH |
751
SDHC_ADMAERR_STATE_ST_TFR;
752
if (s->errintstsen & SDHC_EISEN_ADMAERR) {
753
ERRPRINT("Set ADMA error flag\n");
754
s->errintsts |= SDHC_EIS_ADMAERR;
755
s->norintsts |= SDHC_NIS_ERR;
760
SDHCI_GET_CLASS(s)->end_data_transfer(s);
766
/* we have unfinished business - reschedule to continue ADMA */
767
timer_mod(s->transfer_timer,
768
qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_TRANSFER_DELAY);
771
/* Perform data transfer according to controller configuration */
773
static void sdhci_data_transfer(SDHCIState *s)
775
SDHCIClass *k = SDHCI_GET_CLASS(s);
777
if (s->trnmod & SDHC_TRNS_DMA) {
778
switch (SDHC_DMA_TYPE(s->hostctl)) {
780
if ((s->trnmod & SDHC_TRNS_MULTI) &&
781
(!(s->trnmod & SDHC_TRNS_BLK_CNT_EN) || s->blkcnt == 0)) {
785
if ((s->blkcnt == 1) || !(s->trnmod & SDHC_TRNS_MULTI)) {
786
k->do_sdma_single(s);
792
case SDHC_CTRL_ADMA1_32:
793
if (!(s->capareg & SDHC_CAN_DO_ADMA1)) {
794
ERRPRINT("ADMA1 not supported\n");
800
case SDHC_CTRL_ADMA2_32:
801
if (!(s->capareg & SDHC_CAN_DO_ADMA2)) {
802
ERRPRINT("ADMA2 not supported\n");
808
case SDHC_CTRL_ADMA2_64:
809
if (!(s->capareg & SDHC_CAN_DO_ADMA2) ||
810
!(s->capareg & SDHC_64_BIT_BUS_SUPPORT)) {
811
ERRPRINT("64 bit ADMA not supported\n");
818
ERRPRINT("Unsupported DMA type\n");
822
if ((s->trnmod & SDHC_TRNS_READ) && sd_data_ready(s->card)) {
823
s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT |
824
SDHC_DAT_LINE_ACTIVE;
825
SDHCI_GET_CLASS(s)->read_block_from_card(s);
827
s->prnsts |= SDHC_DOING_WRITE | SDHC_DAT_LINE_ACTIVE |
828
SDHC_SPACE_AVAILABLE | SDHC_DATA_INHIBIT;
829
SDHCI_GET_CLASS(s)->write_block_to_card(s);
834
static bool sdhci_can_issue_command(SDHCIState *s)
836
if (!SDHC_CLOCK_IS_ON(s->clkcon) || !(s->pwrcon & SDHC_POWER_ON) ||
837
(((s->prnsts & SDHC_DATA_INHIBIT) || s->stopped_state) &&
838
((s->cmdreg & SDHC_CMD_DATA_PRESENT) ||
839
((s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY &&
840
!(SDHC_COMMAND_TYPE(s->cmdreg) == SDHC_CMD_ABORT))))) {
847
/* The Buffer Data Port register must be accessed in sequential and
848
* continuous manner */
850
sdhci_buff_access_is_sequential(SDHCIState *s, unsigned byte_num)
852
if ((s->data_count & 0x3) != byte_num) {
853
ERRPRINT("Non-sequential access to Buffer Data Port register"
860
static uint32_t sdhci_read(SDHCIState *s, unsigned int offset, unsigned size)
864
switch (offset & ~0x3) {
869
ret = s->blksize | (s->blkcnt << 16);
875
ret = s->trnmod | (s->cmdreg << 16);
877
case SDHC_RSPREG0 ... SDHC_RSPREG3:
878
ret = s->rspreg[((offset & ~0x3) - SDHC_RSPREG0) >> 2];
881
if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) {
882
ret = SDHCI_GET_CLASS(s)->bdata_read(s, size);
883
DPRINT_L2("read %ub: addr[0x%04x] -> %u(0x%x)\n", size, offset,
892
ret = s->hostctl | (s->pwrcon << 8) | (s->blkgap << 16) |
896
ret = s->clkcon | (s->timeoutcon << 16);
899
ret = s->norintsts | (s->errintsts << 16);
901
case SDHC_NORINTSTSEN:
902
ret = s->norintstsen | (s->errintstsen << 16);
904
case SDHC_NORINTSIGEN:
905
ret = s->norintsigen | (s->errintsigen << 16);
907
case SDHC_ACMD12ERRSTS:
908
ret = s->acmd12errsts;
919
case SDHC_ADMASYSADDR:
920
ret = (uint32_t)s->admasysaddr;
922
case SDHC_ADMASYSADDR + 4:
923
ret = (uint32_t)(s->admasysaddr >> 32);
925
case SDHC_SLOT_INT_STATUS:
926
ret = (SD_HOST_SPECv2_VERS << 16) | sdhci_slotint(s);
929
ERRPRINT("bad %ub read: addr[0x%04x]\n", size, offset);
933
ret >>= (offset & 0x3) * 8;
934
ret &= (1ULL << (size * 8)) - 1;
935
DPRINT_L2("read %ub: addr[0x%04x] -> %u(0x%x)\n", size, offset, ret, ret);
939
static inline void sdhci_blkgap_write(SDHCIState *s, uint8_t value)
941
if ((value & SDHC_STOP_AT_GAP_REQ) && (s->blkgap & SDHC_STOP_AT_GAP_REQ)) {
944
s->blkgap = value & SDHC_STOP_AT_GAP_REQ;
946
if ((value & SDHC_CONTINUE_REQ) && s->stopped_state &&
947
(s->blkgap & SDHC_STOP_AT_GAP_REQ) == 0) {
948
if (s->stopped_state == sdhc_gap_read) {
949
s->prnsts |= SDHC_DAT_LINE_ACTIVE | SDHC_DOING_READ;
950
SDHCI_GET_CLASS(s)->read_block_from_card(s);
952
s->prnsts |= SDHC_DAT_LINE_ACTIVE | SDHC_DOING_WRITE;
953
SDHCI_GET_CLASS(s)->write_block_to_card(s);
955
s->stopped_state = sdhc_not_stopped;
956
} else if (!s->stopped_state && (value & SDHC_STOP_AT_GAP_REQ)) {
957
if (s->prnsts & SDHC_DOING_READ) {
958
s->stopped_state = sdhc_gap_read;
959
} else if (s->prnsts & SDHC_DOING_WRITE) {
960
s->stopped_state = sdhc_gap_write;
965
static inline void sdhci_reset_write(SDHCIState *s, uint8_t value)
969
DEVICE_GET_CLASS(s)->reset(DEVICE(s));
972
s->prnsts &= ~SDHC_CMD_INHIBIT;
973
s->norintsts &= ~SDHC_NIS_CMDCMP;
975
case SDHC_RESET_DATA:
977
s->prnsts &= ~(SDHC_SPACE_AVAILABLE | SDHC_DATA_AVAILABLE |
978
SDHC_DOING_READ | SDHC_DOING_WRITE |
979
SDHC_DATA_INHIBIT | SDHC_DAT_LINE_ACTIVE);
980
s->blkgap &= ~(SDHC_STOP_AT_GAP_REQ | SDHC_CONTINUE_REQ);
981
s->stopped_state = sdhc_not_stopped;
982
s->norintsts &= ~(SDHC_NIS_WBUFRDY | SDHC_NIS_RBUFRDY |
983
SDHC_NIS_DMA | SDHC_NIS_TRSCMP | SDHC_NIS_BLKGAP);
989
sdhci_write(SDHCIState *s, unsigned int offset, uint32_t value, unsigned size)
991
unsigned shift = 8 * (offset & 0x3);
992
uint32_t mask = ~(((1ULL << (size * 8)) - 1) << shift);
995
switch (offset & ~0x3) {
997
s->sdmasysad = (s->sdmasysad & mask) | value;
998
MASKED_WRITE(s->sdmasysad, mask, value);
999
/* Writing to last byte of sdmasysad might trigger transfer */
1000
if (!(mask & 0xFF000000) && TRANSFERRING_DATA(s->prnsts) && s->blkcnt &&
1001
s->blksize && SDHC_DMA_TYPE(s->hostctl) == SDHC_CTRL_SDMA) {
1002
SDHCI_GET_CLASS(s)->do_sdma_multi(s);
1006
if (!TRANSFERRING_DATA(s->prnsts)) {
1007
MASKED_WRITE(s->blksize, mask, value);
1008
MASKED_WRITE(s->blkcnt, mask >> 16, value >> 16);
1012
MASKED_WRITE(s->argument, mask, value);
1015
/* DMA can be enabled only if it is supported as indicated by
1016
* capabilities register */
1017
if (!(s->capareg & SDHC_CAN_DO_DMA)) {
1018
value &= ~SDHC_TRNS_DMA;
1020
MASKED_WRITE(s->trnmod, mask, value);
1021
MASKED_WRITE(s->cmdreg, mask >> 16, value >> 16);
1023
/* Writing to the upper byte of CMDREG triggers SD command generation */
1024
if ((mask & 0xFF000000) || !SDHCI_GET_CLASS(s)->can_issue_command(s)) {
1028
SDHCI_GET_CLASS(s)->send_command(s);
1031
if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) {
1032
SDHCI_GET_CLASS(s)->bdata_write(s, value >> shift, size);
1036
if (!(mask & 0xFF0000)) {
1037
sdhci_blkgap_write(s, value >> 16);
1039
MASKED_WRITE(s->hostctl, mask, value);
1040
MASKED_WRITE(s->pwrcon, mask >> 8, value >> 8);
1041
MASKED_WRITE(s->wakcon, mask >> 24, value >> 24);
1042
if (!(s->prnsts & SDHC_CARD_PRESENT) || ((s->pwrcon >> 1) & 0x7) < 5 ||
1043
!(s->capareg & (1 << (31 - ((s->pwrcon >> 1) & 0x7))))) {
1044
s->pwrcon &= ~SDHC_POWER_ON;
1048
if (!(mask & 0xFF000000)) {
1049
sdhci_reset_write(s, value >> 24);
1051
MASKED_WRITE(s->clkcon, mask, value);
1052
MASKED_WRITE(s->timeoutcon, mask >> 16, value >> 16);
1053
if (s->clkcon & SDHC_CLOCK_INT_EN) {
1054
s->clkcon |= SDHC_CLOCK_INT_STABLE;
1056
s->clkcon &= ~SDHC_CLOCK_INT_STABLE;
1059
case SDHC_NORINTSTS:
1060
if (s->norintstsen & SDHC_NISEN_CARDINT) {
1061
value &= ~SDHC_NIS_CARDINT;
1063
s->norintsts &= mask | ~value;
1064
s->errintsts &= (mask >> 16) | ~(value >> 16);
1066
s->norintsts |= SDHC_NIS_ERR;
1068
s->norintsts &= ~SDHC_NIS_ERR;
1070
sdhci_update_irq(s);
1072
case SDHC_NORINTSTSEN:
1073
MASKED_WRITE(s->norintstsen, mask, value);
1074
MASKED_WRITE(s->errintstsen, mask >> 16, value >> 16);
1075
s->norintsts &= s->norintstsen;
1076
s->errintsts &= s->errintstsen;
1078
s->norintsts |= SDHC_NIS_ERR;
1080
s->norintsts &= ~SDHC_NIS_ERR;
1082
sdhci_update_irq(s);
1084
case SDHC_NORINTSIGEN:
1085
MASKED_WRITE(s->norintsigen, mask, value);
1086
MASKED_WRITE(s->errintsigen, mask >> 16, value >> 16);
1087
sdhci_update_irq(s);
1090
MASKED_WRITE(s->admaerr, mask, value);
1092
case SDHC_ADMASYSADDR:
1093
s->admasysaddr = (s->admasysaddr & (0xFFFFFFFF00000000ULL |
1094
(uint64_t)mask)) | (uint64_t)value;
1096
case SDHC_ADMASYSADDR + 4:
1097
s->admasysaddr = (s->admasysaddr & (0x00000000FFFFFFFFULL |
1098
((uint64_t)mask << 32))) | ((uint64_t)value << 32);
1101
s->acmd12errsts |= value;
1102
s->errintsts |= (value >> 16) & s->errintstsen;
1103
if (s->acmd12errsts) {
1104
s->errintsts |= SDHC_EIS_CMD12ERR;
1107
s->norintsts |= SDHC_NIS_ERR;
1109
sdhci_update_irq(s);
1112
ERRPRINT("bad %ub write offset: addr[0x%04x] <- %u(0x%x)\n",
1113
size, offset, value >> shift, value >> shift);
1116
DPRINT_L2("write %ub: addr[0x%04x] <- %u(0x%x)\n",
1117
size, offset, value >> shift, value >> shift);
1121
sdhci_readfn(void *opaque, hwaddr offset, unsigned size)
1123
SDHCIState *s = (SDHCIState *)opaque;
1125
return SDHCI_GET_CLASS(s)->mem_read(s, offset, size);
1129
sdhci_writefn(void *opaque, hwaddr off, uint64_t val, unsigned sz)
1131
SDHCIState *s = (SDHCIState *)opaque;
1133
SDHCI_GET_CLASS(s)->mem_write(s, off, val, sz);
1136
static const MemoryRegionOps sdhci_mmio_ops = {
1137
.read = sdhci_readfn,
1138
.write = sdhci_writefn,
1140
.min_access_size = 1,
1141
.max_access_size = 4,
1144
.endianness = DEVICE_LITTLE_ENDIAN,
1147
static inline unsigned int sdhci_get_fifolen(SDHCIState *s)
1149
switch (SDHC_CAPAB_BLOCKSIZE(s->capareg)) {
1157
hw_error("SDHC: unsupported value for maximum block size\n");
1162
static void sdhci_initfn(Object *obj)
1164
SDHCIState *s = SDHCI(obj);
1167
di = drive_get_next(IF_SD);
1168
s->card = sd_init(di ? di->bdrv : NULL, false);
1169
if (s->card == NULL) {
1172
s->eject_cb = qemu_allocate_irqs(sdhci_insert_eject_cb, s, 1)[0];
1173
s->ro_cb = qemu_allocate_irqs(sdhci_card_readonly_cb, s, 1)[0];
1174
sd_set_cb(s->card, s->ro_cb, s->eject_cb);
1176
s->insert_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sdhci_raise_insertion_irq, s);
1177
s->transfer_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sdhci_do_data_transfer, s);
1180
static void sdhci_uninitfn(Object *obj)
1182
SDHCIState *s = SDHCI(obj);
1184
timer_del(s->insert_timer);
1185
timer_free(s->insert_timer);
1186
timer_del(s->transfer_timer);
1187
timer_free(s->transfer_timer);
1188
qemu_free_irqs(&s->eject_cb);
1189
qemu_free_irqs(&s->ro_cb);
1191
if (s->fifo_buffer) {
1192
g_free(s->fifo_buffer);
1193
s->fifo_buffer = NULL;
1197
const VMStateDescription sdhci_vmstate = {
1200
.minimum_version_id = 1,
1201
.fields = (VMStateField[]) {
1202
VMSTATE_UINT32(sdmasysad, SDHCIState),
1203
VMSTATE_UINT16(blksize, SDHCIState),
1204
VMSTATE_UINT16(blkcnt, SDHCIState),
1205
VMSTATE_UINT32(argument, SDHCIState),
1206
VMSTATE_UINT16(trnmod, SDHCIState),
1207
VMSTATE_UINT16(cmdreg, SDHCIState),
1208
VMSTATE_UINT32_ARRAY(rspreg, SDHCIState, 4),
1209
VMSTATE_UINT32(prnsts, SDHCIState),
1210
VMSTATE_UINT8(hostctl, SDHCIState),
1211
VMSTATE_UINT8(pwrcon, SDHCIState),
1212
VMSTATE_UINT8(blkgap, SDHCIState),
1213
VMSTATE_UINT8(wakcon, SDHCIState),
1214
VMSTATE_UINT16(clkcon, SDHCIState),
1215
VMSTATE_UINT8(timeoutcon, SDHCIState),
1216
VMSTATE_UINT8(admaerr, SDHCIState),
1217
VMSTATE_UINT16(norintsts, SDHCIState),
1218
VMSTATE_UINT16(errintsts, SDHCIState),
1219
VMSTATE_UINT16(norintstsen, SDHCIState),
1220
VMSTATE_UINT16(errintstsen, SDHCIState),
1221
VMSTATE_UINT16(norintsigen, SDHCIState),
1222
VMSTATE_UINT16(errintsigen, SDHCIState),
1223
VMSTATE_UINT16(acmd12errsts, SDHCIState),
1224
VMSTATE_UINT16(data_count, SDHCIState),
1225
VMSTATE_UINT64(admasysaddr, SDHCIState),
1226
VMSTATE_UINT8(stopped_state, SDHCIState),
1227
VMSTATE_VBUFFER_UINT32(fifo_buffer, SDHCIState, 1, NULL, 0, buf_maxsz),
1228
VMSTATE_TIMER(insert_timer, SDHCIState),
1229
VMSTATE_TIMER(transfer_timer, SDHCIState),
1230
VMSTATE_END_OF_LIST()
1234
/* Capabilities registers provide information on supported features of this
1235
* specific host controller implementation */
1236
static Property sdhci_properties[] = {
1237
DEFINE_PROP_HEX32("capareg", SDHCIState, capareg,
1238
SDHC_CAPAB_REG_DEFAULT),
1239
DEFINE_PROP_HEX32("maxcurr", SDHCIState, maxcurr, 0),
1240
DEFINE_PROP_END_OF_LIST(),
1243
static void sdhci_realize(DeviceState *dev, Error ** errp)
1245
SDHCIState *s = SDHCI(dev);
1246
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
1248
s->buf_maxsz = sdhci_get_fifolen(s);
1249
s->fifo_buffer = g_malloc0(s->buf_maxsz);
1250
sysbus_init_irq(sbd, &s->irq);
1251
memory_region_init_io(&s->iomem, OBJECT(s), &sdhci_mmio_ops, s, "sdhci",
1252
SDHC_REGISTERS_MAP_SIZE);
1253
sysbus_init_mmio(sbd, &s->iomem);
1256
static void sdhci_generic_reset(DeviceState *ds)
1258
SDHCIState *s = SDHCI(ds);
1259
SDHCI_GET_CLASS(s)->reset(s);
1262
static void sdhci_class_init(ObjectClass *klass, void *data)
1264
DeviceClass *dc = DEVICE_CLASS(klass);
1265
SDHCIClass *k = SDHCI_CLASS(klass);
1267
dc->vmsd = &sdhci_vmstate;
1268
dc->props = sdhci_properties;
1269
dc->reset = sdhci_generic_reset;
1270
dc->realize = sdhci_realize;
1272
k->reset = sdhci_reset;
1273
k->mem_read = sdhci_read;
1274
k->mem_write = sdhci_write;
1275
k->send_command = sdhci_send_command;
1276
k->can_issue_command = sdhci_can_issue_command;
1277
k->data_transfer = sdhci_data_transfer;
1278
k->end_data_transfer = sdhci_end_transfer;
1279
k->do_sdma_single = sdhci_sdma_transfer_single_block;
1280
k->do_sdma_multi = sdhci_sdma_transfer_multi_blocks;
1281
k->do_adma = sdhci_do_adma;
1282
k->read_block_from_card = sdhci_read_block_from_card;
1283
k->write_block_to_card = sdhci_write_block_to_card;
1284
k->bdata_read = sdhci_read_dataport;
1285
k->bdata_write = sdhci_write_dataport;
1288
static const TypeInfo sdhci_type_info = {
1290
.parent = TYPE_SYS_BUS_DEVICE,
1291
.instance_size = sizeof(SDHCIState),
1292
.instance_init = sdhci_initfn,
1293
.instance_finalize = sdhci_uninitfn,
1294
.class_init = sdhci_class_init,
1295
.class_size = sizeof(SDHCIClass)
1298
static void sdhci_register_types(void)
1300
type_register_static(&sdhci_type_info);
1303
type_init(sdhci_register_types)