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d7dfca08 IM |
1 | /* |
2 | * SD Association Host Standard Specification v2.0 controller emulation | |
3 | * | |
4 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. | |
5 | * Mitsyanko Igor <i.mitsyanko@samsung.com> | |
6 | * Peter A.G. Crosthwaite <peter.crosthwaite@petalogix.com> | |
7 | * | |
8 | * Based on MMC controller for Samsung S5PC1xx-based board emulation | |
9 | * by Alexey Merkulov and Vladimir Monakhov. | |
10 | * | |
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. | |
15 | * | |
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. | |
20 | * | |
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/>. | |
23 | */ | |
24 | ||
be9c5dde | 25 | #include <inttypes.h> |
83c9f4ca | 26 | #include "hw/hw.h" |
fa1d36df | 27 | #include "sysemu/block-backend.h" |
d7dfca08 IM |
28 | #include "sysemu/blockdev.h" |
29 | #include "sysemu/dma.h" | |
30 | #include "qemu/timer.h" | |
d7dfca08 IM |
31 | #include "qemu/bitops.h" |
32 | ||
47b43a1f | 33 | #include "sdhci.h" |
d7dfca08 IM |
34 | |
35 | /* host controller debug messages */ | |
36 | #ifndef SDHC_DEBUG | |
37 | #define SDHC_DEBUG 0 | |
38 | #endif | |
39 | ||
40 | #if SDHC_DEBUG == 0 | |
41 | #define DPRINT_L1(fmt, args...) do { } while (0) | |
42 | #define DPRINT_L2(fmt, args...) do { } while (0) | |
43 | #define ERRPRINT(fmt, args...) do { } while (0) | |
44 | #elif SDHC_DEBUG == 1 | |
45 | #define DPRINT_L1(fmt, args...) \ | |
46 | do {fprintf(stderr, "QEMU SDHC: "fmt, ## args); } while (0) | |
47 | #define DPRINT_L2(fmt, args...) do { } while (0) | |
48 | #define ERRPRINT(fmt, args...) \ | |
49 | do {fprintf(stderr, "QEMU SDHC ERROR: "fmt, ## args); } while (0) | |
50 | #else | |
51 | #define DPRINT_L1(fmt, args...) \ | |
52 | do {fprintf(stderr, "QEMU SDHC: "fmt, ## args); } while (0) | |
53 | #define DPRINT_L2(fmt, args...) \ | |
54 | do {fprintf(stderr, "QEMU SDHC: "fmt, ## args); } while (0) | |
55 | #define ERRPRINT(fmt, args...) \ | |
56 | do {fprintf(stderr, "QEMU SDHC ERROR: "fmt, ## args); } while (0) | |
57 | #endif | |
58 | ||
59 | /* Default SD/MMC host controller features information, which will be | |
60 | * presented in CAPABILITIES register of generic SD host controller at reset. | |
61 | * If not stated otherwise: | |
62 | * 0 - not supported, 1 - supported, other - prohibited. | |
63 | */ | |
64 | #define SDHC_CAPAB_64BITBUS 0ul /* 64-bit System Bus Support */ | |
65 | #define SDHC_CAPAB_18V 1ul /* Voltage support 1.8v */ | |
66 | #define SDHC_CAPAB_30V 0ul /* Voltage support 3.0v */ | |
67 | #define SDHC_CAPAB_33V 1ul /* Voltage support 3.3v */ | |
68 | #define SDHC_CAPAB_SUSPRESUME 0ul /* Suspend/resume support */ | |
69 | #define SDHC_CAPAB_SDMA 1ul /* SDMA support */ | |
70 | #define SDHC_CAPAB_HIGHSPEED 1ul /* High speed support */ | |
71 | #define SDHC_CAPAB_ADMA1 1ul /* ADMA1 support */ | |
72 | #define SDHC_CAPAB_ADMA2 1ul /* ADMA2 support */ | |
73 | /* Maximum host controller R/W buffers size | |
74 | * Possible values: 512, 1024, 2048 bytes */ | |
75 | #define SDHC_CAPAB_MAXBLOCKLENGTH 512ul | |
76 | /* Maximum clock frequency for SDclock in MHz | |
77 | * value in range 10-63 MHz, 0 - not defined */ | |
c7ff8daa | 78 | #define SDHC_CAPAB_BASECLKFREQ 52ul |
d7dfca08 IM |
79 | #define SDHC_CAPAB_TOUNIT 1ul /* Timeout clock unit 0 - kHz, 1 - MHz */ |
80 | /* Timeout clock frequency 1-63, 0 - not defined */ | |
c7ff8daa | 81 | #define SDHC_CAPAB_TOCLKFREQ 52ul |
d7dfca08 IM |
82 | |
83 | /* Now check all parameters and calculate CAPABILITIES REGISTER value */ | |
84 | #if SDHC_CAPAB_64BITBUS > 1 || SDHC_CAPAB_18V > 1 || SDHC_CAPAB_30V > 1 || \ | |
85 | SDHC_CAPAB_33V > 1 || SDHC_CAPAB_SUSPRESUME > 1 || SDHC_CAPAB_SDMA > 1 || \ | |
86 | SDHC_CAPAB_HIGHSPEED > 1 || SDHC_CAPAB_ADMA2 > 1 || SDHC_CAPAB_ADMA1 > 1 ||\ | |
87 | SDHC_CAPAB_TOUNIT > 1 | |
88 | #error Capabilities features can have value 0 or 1 only! | |
89 | #endif | |
90 | ||
91 | #if SDHC_CAPAB_MAXBLOCKLENGTH == 512 | |
92 | #define MAX_BLOCK_LENGTH 0ul | |
93 | #elif SDHC_CAPAB_MAXBLOCKLENGTH == 1024 | |
94 | #define MAX_BLOCK_LENGTH 1ul | |
95 | #elif SDHC_CAPAB_MAXBLOCKLENGTH == 2048 | |
96 | #define MAX_BLOCK_LENGTH 2ul | |
97 | #else | |
98 | #error Max host controller block size can have value 512, 1024 or 2048 only! | |
99 | #endif | |
100 | ||
101 | #if (SDHC_CAPAB_BASECLKFREQ > 0 && SDHC_CAPAB_BASECLKFREQ < 10) || \ | |
102 | SDHC_CAPAB_BASECLKFREQ > 63 | |
103 | #error SDclock frequency can have value in range 0, 10-63 only! | |
104 | #endif | |
105 | ||
106 | #if SDHC_CAPAB_TOCLKFREQ > 63 | |
107 | #error Timeout clock frequency can have value in range 0-63 only! | |
108 | #endif | |
109 | ||
110 | #define SDHC_CAPAB_REG_DEFAULT \ | |
111 | ((SDHC_CAPAB_64BITBUS << 28) | (SDHC_CAPAB_18V << 26) | \ | |
112 | (SDHC_CAPAB_30V << 25) | (SDHC_CAPAB_33V << 24) | \ | |
113 | (SDHC_CAPAB_SUSPRESUME << 23) | (SDHC_CAPAB_SDMA << 22) | \ | |
114 | (SDHC_CAPAB_HIGHSPEED << 21) | (SDHC_CAPAB_ADMA1 << 20) | \ | |
115 | (SDHC_CAPAB_ADMA2 << 19) | (MAX_BLOCK_LENGTH << 16) | \ | |
116 | (SDHC_CAPAB_BASECLKFREQ << 8) | (SDHC_CAPAB_TOUNIT << 7) | \ | |
117 | (SDHC_CAPAB_TOCLKFREQ)) | |
118 | ||
119 | #define MASKED_WRITE(reg, mask, val) (reg = (reg & (mask)) | (val)) | |
120 | ||
121 | static uint8_t sdhci_slotint(SDHCIState *s) | |
122 | { | |
123 | return (s->norintsts & s->norintsigen) || (s->errintsts & s->errintsigen) || | |
124 | ((s->norintsts & SDHC_NIS_INSERT) && (s->wakcon & SDHC_WKUP_ON_INS)) || | |
125 | ((s->norintsts & SDHC_NIS_REMOVE) && (s->wakcon & SDHC_WKUP_ON_RMV)); | |
126 | } | |
127 | ||
128 | static inline void sdhci_update_irq(SDHCIState *s) | |
129 | { | |
130 | qemu_set_irq(s->irq, sdhci_slotint(s)); | |
131 | } | |
132 | ||
133 | static void sdhci_raise_insertion_irq(void *opaque) | |
134 | { | |
135 | SDHCIState *s = (SDHCIState *)opaque; | |
136 | ||
137 | if (s->norintsts & SDHC_NIS_REMOVE) { | |
bc72ad67 AB |
138 | timer_mod(s->insert_timer, |
139 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_INSERTION_DELAY); | |
d7dfca08 IM |
140 | } else { |
141 | s->prnsts = 0x1ff0000; | |
142 | if (s->norintstsen & SDHC_NISEN_INSERT) { | |
143 | s->norintsts |= SDHC_NIS_INSERT; | |
144 | } | |
145 | sdhci_update_irq(s); | |
146 | } | |
147 | } | |
148 | ||
149 | static void sdhci_insert_eject_cb(void *opaque, int irq, int level) | |
150 | { | |
151 | SDHCIState *s = (SDHCIState *)opaque; | |
152 | DPRINT_L1("Card state changed: %s!\n", level ? "insert" : "eject"); | |
153 | ||
154 | if ((s->norintsts & SDHC_NIS_REMOVE) && level) { | |
155 | /* Give target some time to notice card ejection */ | |
bc72ad67 AB |
156 | timer_mod(s->insert_timer, |
157 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_INSERTION_DELAY); | |
d7dfca08 IM |
158 | } else { |
159 | if (level) { | |
160 | s->prnsts = 0x1ff0000; | |
161 | if (s->norintstsen & SDHC_NISEN_INSERT) { | |
162 | s->norintsts |= SDHC_NIS_INSERT; | |
163 | } | |
164 | } else { | |
165 | s->prnsts = 0x1fa0000; | |
166 | s->pwrcon &= ~SDHC_POWER_ON; | |
167 | s->clkcon &= ~SDHC_CLOCK_SDCLK_EN; | |
168 | if (s->norintstsen & SDHC_NISEN_REMOVE) { | |
169 | s->norintsts |= SDHC_NIS_REMOVE; | |
170 | } | |
171 | } | |
172 | sdhci_update_irq(s); | |
173 | } | |
174 | } | |
175 | ||
176 | static void sdhci_card_readonly_cb(void *opaque, int irq, int level) | |
177 | { | |
178 | SDHCIState *s = (SDHCIState *)opaque; | |
179 | ||
180 | if (level) { | |
181 | s->prnsts &= ~SDHC_WRITE_PROTECT; | |
182 | } else { | |
183 | /* Write enabled */ | |
184 | s->prnsts |= SDHC_WRITE_PROTECT; | |
185 | } | |
186 | } | |
187 | ||
188 | static void sdhci_reset(SDHCIState *s) | |
189 | { | |
bc72ad67 AB |
190 | timer_del(s->insert_timer); |
191 | timer_del(s->transfer_timer); | |
d7dfca08 IM |
192 | /* Set all registers to 0. Capabilities registers are not cleared |
193 | * and assumed to always preserve their value, given to them during | |
194 | * initialization */ | |
195 | memset(&s->sdmasysad, 0, (uintptr_t)&s->capareg - (uintptr_t)&s->sdmasysad); | |
196 | ||
197 | sd_set_cb(s->card, s->ro_cb, s->eject_cb); | |
198 | s->data_count = 0; | |
199 | s->stopped_state = sdhc_not_stopped; | |
200 | } | |
201 | ||
d368ba43 | 202 | static void sdhci_data_transfer(void *opaque); |
d7dfca08 IM |
203 | |
204 | static void sdhci_send_command(SDHCIState *s) | |
205 | { | |
206 | SDRequest request; | |
207 | uint8_t response[16]; | |
208 | int rlen; | |
209 | ||
210 | s->errintsts = 0; | |
211 | s->acmd12errsts = 0; | |
212 | request.cmd = s->cmdreg >> 8; | |
213 | request.arg = s->argument; | |
214 | DPRINT_L1("sending CMD%u ARG[0x%08x]\n", request.cmd, request.arg); | |
215 | rlen = sd_do_command(s->card, &request, response); | |
216 | ||
217 | if (s->cmdreg & SDHC_CMD_RESPONSE) { | |
218 | if (rlen == 4) { | |
219 | s->rspreg[0] = (response[0] << 24) | (response[1] << 16) | | |
220 | (response[2] << 8) | response[3]; | |
221 | s->rspreg[1] = s->rspreg[2] = s->rspreg[3] = 0; | |
222 | DPRINT_L1("Response: RSPREG[31..0]=0x%08x\n", s->rspreg[0]); | |
223 | } else if (rlen == 16) { | |
224 | s->rspreg[0] = (response[11] << 24) | (response[12] << 16) | | |
225 | (response[13] << 8) | response[14]; | |
226 | s->rspreg[1] = (response[7] << 24) | (response[8] << 16) | | |
227 | (response[9] << 8) | response[10]; | |
228 | s->rspreg[2] = (response[3] << 24) | (response[4] << 16) | | |
229 | (response[5] << 8) | response[6]; | |
230 | s->rspreg[3] = (response[0] << 16) | (response[1] << 8) | | |
231 | response[2]; | |
232 | DPRINT_L1("Response received:\n RSPREG[127..96]=0x%08x, RSPREG[95.." | |
233 | "64]=0x%08x,\n RSPREG[63..32]=0x%08x, RSPREG[31..0]=0x%08x\n", | |
234 | s->rspreg[3], s->rspreg[2], s->rspreg[1], s->rspreg[0]); | |
235 | } else { | |
236 | ERRPRINT("Timeout waiting for command response\n"); | |
237 | if (s->errintstsen & SDHC_EISEN_CMDTIMEOUT) { | |
238 | s->errintsts |= SDHC_EIS_CMDTIMEOUT; | |
239 | s->norintsts |= SDHC_NIS_ERR; | |
240 | } | |
241 | } | |
242 | ||
243 | if ((s->norintstsen & SDHC_NISEN_TRSCMP) && | |
244 | (s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY) { | |
245 | s->norintsts |= SDHC_NIS_TRSCMP; | |
246 | } | |
247 | } else if (rlen != 0 && (s->errintstsen & SDHC_EISEN_CMDIDX)) { | |
248 | s->errintsts |= SDHC_EIS_CMDIDX; | |
249 | s->norintsts |= SDHC_NIS_ERR; | |
250 | } | |
251 | ||
252 | if (s->norintstsen & SDHC_NISEN_CMDCMP) { | |
253 | s->norintsts |= SDHC_NIS_CMDCMP; | |
254 | } | |
255 | ||
256 | sdhci_update_irq(s); | |
257 | ||
258 | if (s->blksize && (s->cmdreg & SDHC_CMD_DATA_PRESENT)) { | |
656f416c | 259 | s->data_count = 0; |
d368ba43 | 260 | sdhci_data_transfer(s); |
d7dfca08 IM |
261 | } |
262 | } | |
263 | ||
264 | static void sdhci_end_transfer(SDHCIState *s) | |
265 | { | |
266 | /* Automatically send CMD12 to stop transfer if AutoCMD12 enabled */ | |
267 | if ((s->trnmod & SDHC_TRNS_ACMD12) != 0) { | |
268 | SDRequest request; | |
269 | uint8_t response[16]; | |
270 | ||
271 | request.cmd = 0x0C; | |
272 | request.arg = 0; | |
273 | DPRINT_L1("Automatically issue CMD%d %08x\n", request.cmd, request.arg); | |
274 | sd_do_command(s->card, &request, response); | |
275 | /* Auto CMD12 response goes to the upper Response register */ | |
276 | s->rspreg[3] = (response[0] << 24) | (response[1] << 16) | | |
277 | (response[2] << 8) | response[3]; | |
278 | } | |
279 | ||
280 | s->prnsts &= ~(SDHC_DOING_READ | SDHC_DOING_WRITE | | |
281 | SDHC_DAT_LINE_ACTIVE | SDHC_DATA_INHIBIT | | |
282 | SDHC_SPACE_AVAILABLE | SDHC_DATA_AVAILABLE); | |
283 | ||
284 | if (s->norintstsen & SDHC_NISEN_TRSCMP) { | |
285 | s->norintsts |= SDHC_NIS_TRSCMP; | |
286 | } | |
287 | ||
288 | sdhci_update_irq(s); | |
289 | } | |
290 | ||
291 | /* | |
292 | * Programmed i/o data transfer | |
293 | */ | |
294 | ||
295 | /* Fill host controller's read buffer with BLKSIZE bytes of data from card */ | |
296 | static void sdhci_read_block_from_card(SDHCIState *s) | |
297 | { | |
298 | int index = 0; | |
299 | ||
300 | if ((s->trnmod & SDHC_TRNS_MULTI) && | |
301 | (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) { | |
302 | return; | |
303 | } | |
304 | ||
305 | for (index = 0; index < (s->blksize & 0x0fff); index++) { | |
306 | s->fifo_buffer[index] = sd_read_data(s->card); | |
307 | } | |
308 | ||
309 | /* New data now available for READ through Buffer Port Register */ | |
310 | s->prnsts |= SDHC_DATA_AVAILABLE; | |
311 | if (s->norintstsen & SDHC_NISEN_RBUFRDY) { | |
312 | s->norintsts |= SDHC_NIS_RBUFRDY; | |
313 | } | |
314 | ||
315 | /* Clear DAT line active status if that was the last block */ | |
316 | if ((s->trnmod & SDHC_TRNS_MULTI) == 0 || | |
317 | ((s->trnmod & SDHC_TRNS_MULTI) && s->blkcnt == 1)) { | |
318 | s->prnsts &= ~SDHC_DAT_LINE_ACTIVE; | |
319 | } | |
320 | ||
321 | /* If stop at block gap request was set and it's not the last block of | |
322 | * data - generate Block Event interrupt */ | |
323 | if (s->stopped_state == sdhc_gap_read && (s->trnmod & SDHC_TRNS_MULTI) && | |
324 | s->blkcnt != 1) { | |
325 | s->prnsts &= ~SDHC_DAT_LINE_ACTIVE; | |
326 | if (s->norintstsen & SDHC_EISEN_BLKGAP) { | |
327 | s->norintsts |= SDHC_EIS_BLKGAP; | |
328 | } | |
329 | } | |
330 | ||
331 | sdhci_update_irq(s); | |
332 | } | |
333 | ||
334 | /* Read @size byte of data from host controller @s BUFFER DATA PORT register */ | |
335 | static uint32_t sdhci_read_dataport(SDHCIState *s, unsigned size) | |
336 | { | |
337 | uint32_t value = 0; | |
338 | int i; | |
339 | ||
340 | /* first check that a valid data exists in host controller input buffer */ | |
341 | if ((s->prnsts & SDHC_DATA_AVAILABLE) == 0) { | |
342 | ERRPRINT("Trying to read from empty buffer\n"); | |
343 | return 0; | |
344 | } | |
345 | ||
346 | for (i = 0; i < size; i++) { | |
347 | value |= s->fifo_buffer[s->data_count] << i * 8; | |
348 | s->data_count++; | |
349 | /* check if we've read all valid data (blksize bytes) from buffer */ | |
350 | if ((s->data_count) >= (s->blksize & 0x0fff)) { | |
351 | DPRINT_L2("All %u bytes of data have been read from input buffer\n", | |
352 | s->data_count); | |
353 | s->prnsts &= ~SDHC_DATA_AVAILABLE; /* no more data in a buffer */ | |
354 | s->data_count = 0; /* next buff read must start at position [0] */ | |
355 | ||
356 | if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { | |
357 | s->blkcnt--; | |
358 | } | |
359 | ||
360 | /* if that was the last block of data */ | |
361 | if ((s->trnmod & SDHC_TRNS_MULTI) == 0 || | |
362 | ((s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) || | |
363 | /* stop at gap request */ | |
364 | (s->stopped_state == sdhc_gap_read && | |
365 | !(s->prnsts & SDHC_DAT_LINE_ACTIVE))) { | |
d368ba43 | 366 | sdhci_end_transfer(s); |
d7dfca08 | 367 | } else { /* if there are more data, read next block from card */ |
d368ba43 | 368 | sdhci_read_block_from_card(s); |
d7dfca08 IM |
369 | } |
370 | break; | |
371 | } | |
372 | } | |
373 | ||
374 | return value; | |
375 | } | |
376 | ||
377 | /* Write data from host controller FIFO to card */ | |
378 | static void sdhci_write_block_to_card(SDHCIState *s) | |
379 | { | |
380 | int index = 0; | |
381 | ||
382 | if (s->prnsts & SDHC_SPACE_AVAILABLE) { | |
383 | if (s->norintstsen & SDHC_NISEN_WBUFRDY) { | |
384 | s->norintsts |= SDHC_NIS_WBUFRDY; | |
385 | } | |
386 | sdhci_update_irq(s); | |
387 | return; | |
388 | } | |
389 | ||
390 | if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { | |
391 | if (s->blkcnt == 0) { | |
392 | return; | |
393 | } else { | |
394 | s->blkcnt--; | |
395 | } | |
396 | } | |
397 | ||
398 | for (index = 0; index < (s->blksize & 0x0fff); index++) { | |
399 | sd_write_data(s->card, s->fifo_buffer[index]); | |
400 | } | |
401 | ||
402 | /* Next data can be written through BUFFER DATORT register */ | |
403 | s->prnsts |= SDHC_SPACE_AVAILABLE; | |
d7dfca08 IM |
404 | |
405 | /* Finish transfer if that was the last block of data */ | |
406 | if ((s->trnmod & SDHC_TRNS_MULTI) == 0 || | |
407 | ((s->trnmod & SDHC_TRNS_MULTI) && | |
408 | (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0))) { | |
d368ba43 | 409 | sdhci_end_transfer(s); |
dcdb4cd8 PC |
410 | } else if (s->norintstsen & SDHC_NISEN_WBUFRDY) { |
411 | s->norintsts |= SDHC_NIS_WBUFRDY; | |
d7dfca08 IM |
412 | } |
413 | ||
414 | /* Generate Block Gap Event if requested and if not the last block */ | |
415 | if (s->stopped_state == sdhc_gap_write && (s->trnmod & SDHC_TRNS_MULTI) && | |
416 | s->blkcnt > 0) { | |
417 | s->prnsts &= ~SDHC_DOING_WRITE; | |
418 | if (s->norintstsen & SDHC_EISEN_BLKGAP) { | |
419 | s->norintsts |= SDHC_EIS_BLKGAP; | |
420 | } | |
d368ba43 | 421 | sdhci_end_transfer(s); |
d7dfca08 IM |
422 | } |
423 | ||
424 | sdhci_update_irq(s); | |
425 | } | |
426 | ||
427 | /* Write @size bytes of @value data to host controller @s Buffer Data Port | |
428 | * register */ | |
429 | static void sdhci_write_dataport(SDHCIState *s, uint32_t value, unsigned size) | |
430 | { | |
431 | unsigned i; | |
432 | ||
433 | /* Check that there is free space left in a buffer */ | |
434 | if (!(s->prnsts & SDHC_SPACE_AVAILABLE)) { | |
435 | ERRPRINT("Can't write to data buffer: buffer full\n"); | |
436 | return; | |
437 | } | |
438 | ||
439 | for (i = 0; i < size; i++) { | |
440 | s->fifo_buffer[s->data_count] = value & 0xFF; | |
441 | s->data_count++; | |
442 | value >>= 8; | |
443 | if (s->data_count >= (s->blksize & 0x0fff)) { | |
444 | DPRINT_L2("write buffer filled with %u bytes of data\n", | |
445 | s->data_count); | |
446 | s->data_count = 0; | |
447 | s->prnsts &= ~SDHC_SPACE_AVAILABLE; | |
448 | if (s->prnsts & SDHC_DOING_WRITE) { | |
d368ba43 | 449 | sdhci_write_block_to_card(s); |
d7dfca08 IM |
450 | } |
451 | } | |
452 | } | |
453 | } | |
454 | ||
455 | /* | |
456 | * Single DMA data transfer | |
457 | */ | |
458 | ||
459 | /* Multi block SDMA transfer */ | |
460 | static void sdhci_sdma_transfer_multi_blocks(SDHCIState *s) | |
461 | { | |
462 | bool page_aligned = false; | |
463 | unsigned int n, begin; | |
464 | const uint16_t block_size = s->blksize & 0x0fff; | |
465 | uint32_t boundary_chk = 1 << (((s->blksize & 0xf000) >> 12) + 12); | |
466 | uint32_t boundary_count = boundary_chk - (s->sdmasysad % boundary_chk); | |
467 | ||
468 | /* XXX: Some sd/mmc drivers (for example, u-boot-slp) do not account for | |
469 | * possible stop at page boundary if initial address is not page aligned, | |
470 | * allow them to work properly */ | |
471 | if ((s->sdmasysad % boundary_chk) == 0) { | |
472 | page_aligned = true; | |
473 | } | |
474 | ||
475 | if (s->trnmod & SDHC_TRNS_READ) { | |
476 | s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT | | |
477 | SDHC_DAT_LINE_ACTIVE; | |
478 | while (s->blkcnt) { | |
479 | if (s->data_count == 0) { | |
480 | for (n = 0; n < block_size; n++) { | |
481 | s->fifo_buffer[n] = sd_read_data(s->card); | |
482 | } | |
483 | } | |
484 | begin = s->data_count; | |
485 | if (((boundary_count + begin) < block_size) && page_aligned) { | |
486 | s->data_count = boundary_count + begin; | |
487 | boundary_count = 0; | |
488 | } else { | |
489 | s->data_count = block_size; | |
490 | boundary_count -= block_size - begin; | |
491 | if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { | |
492 | s->blkcnt--; | |
493 | } | |
494 | } | |
df32fd1c | 495 | dma_memory_write(&address_space_memory, s->sdmasysad, |
d7dfca08 IM |
496 | &s->fifo_buffer[begin], s->data_count - begin); |
497 | s->sdmasysad += s->data_count - begin; | |
498 | if (s->data_count == block_size) { | |
499 | s->data_count = 0; | |
500 | } | |
501 | if (page_aligned && boundary_count == 0) { | |
502 | break; | |
503 | } | |
504 | } | |
505 | } else { | |
506 | s->prnsts |= SDHC_DOING_WRITE | SDHC_DATA_INHIBIT | | |
507 | SDHC_DAT_LINE_ACTIVE; | |
508 | while (s->blkcnt) { | |
509 | begin = s->data_count; | |
510 | if (((boundary_count + begin) < block_size) && page_aligned) { | |
511 | s->data_count = boundary_count + begin; | |
512 | boundary_count = 0; | |
513 | } else { | |
514 | s->data_count = block_size; | |
515 | boundary_count -= block_size - begin; | |
516 | } | |
df32fd1c | 517 | dma_memory_read(&address_space_memory, s->sdmasysad, |
d7dfca08 IM |
518 | &s->fifo_buffer[begin], s->data_count); |
519 | s->sdmasysad += s->data_count - begin; | |
520 | if (s->data_count == block_size) { | |
521 | for (n = 0; n < block_size; n++) { | |
522 | sd_write_data(s->card, s->fifo_buffer[n]); | |
523 | } | |
524 | s->data_count = 0; | |
525 | if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { | |
526 | s->blkcnt--; | |
527 | } | |
528 | } | |
529 | if (page_aligned && boundary_count == 0) { | |
530 | break; | |
531 | } | |
532 | } | |
533 | } | |
534 | ||
535 | if (s->blkcnt == 0) { | |
d368ba43 | 536 | sdhci_end_transfer(s); |
d7dfca08 IM |
537 | } else { |
538 | if (s->norintstsen & SDHC_NISEN_DMA) { | |
539 | s->norintsts |= SDHC_NIS_DMA; | |
540 | } | |
541 | sdhci_update_irq(s); | |
542 | } | |
543 | } | |
544 | ||
545 | /* single block SDMA transfer */ | |
546 | ||
547 | static void sdhci_sdma_transfer_single_block(SDHCIState *s) | |
548 | { | |
549 | int n; | |
550 | uint32_t datacnt = s->blksize & 0x0fff; | |
551 | ||
552 | if (s->trnmod & SDHC_TRNS_READ) { | |
553 | for (n = 0; n < datacnt; n++) { | |
554 | s->fifo_buffer[n] = sd_read_data(s->card); | |
555 | } | |
df32fd1c | 556 | dma_memory_write(&address_space_memory, s->sdmasysad, s->fifo_buffer, |
d7dfca08 IM |
557 | datacnt); |
558 | } else { | |
df32fd1c | 559 | dma_memory_read(&address_space_memory, s->sdmasysad, s->fifo_buffer, |
d7dfca08 IM |
560 | datacnt); |
561 | for (n = 0; n < datacnt; n++) { | |
562 | sd_write_data(s->card, s->fifo_buffer[n]); | |
563 | } | |
564 | } | |
565 | ||
566 | if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { | |
567 | s->blkcnt--; | |
568 | } | |
569 | ||
d368ba43 | 570 | sdhci_end_transfer(s); |
d7dfca08 IM |
571 | } |
572 | ||
573 | typedef struct ADMADescr { | |
574 | hwaddr addr; | |
575 | uint16_t length; | |
576 | uint8_t attr; | |
577 | uint8_t incr; | |
578 | } ADMADescr; | |
579 | ||
580 | static void get_adma_description(SDHCIState *s, ADMADescr *dscr) | |
581 | { | |
582 | uint32_t adma1 = 0; | |
583 | uint64_t adma2 = 0; | |
584 | hwaddr entry_addr = (hwaddr)s->admasysaddr; | |
585 | switch (SDHC_DMA_TYPE(s->hostctl)) { | |
586 | case SDHC_CTRL_ADMA2_32: | |
df32fd1c | 587 | dma_memory_read(&address_space_memory, entry_addr, (uint8_t *)&adma2, |
d7dfca08 IM |
588 | sizeof(adma2)); |
589 | adma2 = le64_to_cpu(adma2); | |
590 | /* The spec does not specify endianness of descriptor table. | |
591 | * We currently assume that it is LE. | |
592 | */ | |
593 | dscr->addr = (hwaddr)extract64(adma2, 32, 32) & ~0x3ull; | |
594 | dscr->length = (uint16_t)extract64(adma2, 16, 16); | |
595 | dscr->attr = (uint8_t)extract64(adma2, 0, 7); | |
596 | dscr->incr = 8; | |
597 | break; | |
598 | case SDHC_CTRL_ADMA1_32: | |
df32fd1c | 599 | dma_memory_read(&address_space_memory, entry_addr, (uint8_t *)&adma1, |
d7dfca08 IM |
600 | sizeof(adma1)); |
601 | adma1 = le32_to_cpu(adma1); | |
602 | dscr->addr = (hwaddr)(adma1 & 0xFFFFF000); | |
603 | dscr->attr = (uint8_t)extract32(adma1, 0, 7); | |
604 | dscr->incr = 4; | |
605 | if ((dscr->attr & SDHC_ADMA_ATTR_ACT_MASK) == SDHC_ADMA_ATTR_SET_LEN) { | |
606 | dscr->length = (uint16_t)extract32(adma1, 12, 16); | |
607 | } else { | |
608 | dscr->length = 4096; | |
609 | } | |
610 | break; | |
611 | case SDHC_CTRL_ADMA2_64: | |
df32fd1c | 612 | dma_memory_read(&address_space_memory, entry_addr, |
d7dfca08 | 613 | (uint8_t *)(&dscr->attr), 1); |
df32fd1c | 614 | dma_memory_read(&address_space_memory, entry_addr + 2, |
d7dfca08 IM |
615 | (uint8_t *)(&dscr->length), 2); |
616 | dscr->length = le16_to_cpu(dscr->length); | |
df32fd1c | 617 | dma_memory_read(&address_space_memory, entry_addr + 4, |
d7dfca08 IM |
618 | (uint8_t *)(&dscr->addr), 8); |
619 | dscr->attr = le64_to_cpu(dscr->attr); | |
620 | dscr->attr &= 0xfffffff8; | |
621 | dscr->incr = 12; | |
622 | break; | |
623 | } | |
624 | } | |
625 | ||
626 | /* Advanced DMA data transfer */ | |
627 | ||
628 | static void sdhci_do_adma(SDHCIState *s) | |
629 | { | |
630 | unsigned int n, begin, length; | |
631 | const uint16_t block_size = s->blksize & 0x0fff; | |
632 | ADMADescr dscr; | |
633 | int i; | |
634 | ||
635 | for (i = 0; i < SDHC_ADMA_DESCS_PER_DELAY; ++i) { | |
636 | s->admaerr &= ~SDHC_ADMAERR_LENGTH_MISMATCH; | |
637 | ||
638 | get_adma_description(s, &dscr); | |
639 | DPRINT_L2("ADMA loop: addr=" TARGET_FMT_plx ", len=%d, attr=%x\n", | |
640 | dscr.addr, dscr.length, dscr.attr); | |
641 | ||
642 | if ((dscr.attr & SDHC_ADMA_ATTR_VALID) == 0) { | |
643 | /* Indicate that error occurred in ST_FDS state */ | |
644 | s->admaerr &= ~SDHC_ADMAERR_STATE_MASK; | |
645 | s->admaerr |= SDHC_ADMAERR_STATE_ST_FDS; | |
646 | ||
647 | /* Generate ADMA error interrupt */ | |
648 | if (s->errintstsen & SDHC_EISEN_ADMAERR) { | |
649 | s->errintsts |= SDHC_EIS_ADMAERR; | |
650 | s->norintsts |= SDHC_NIS_ERR; | |
651 | } | |
652 | ||
653 | sdhci_update_irq(s); | |
654 | return; | |
655 | } | |
656 | ||
657 | length = dscr.length ? dscr.length : 65536; | |
658 | ||
659 | switch (dscr.attr & SDHC_ADMA_ATTR_ACT_MASK) { | |
660 | case SDHC_ADMA_ATTR_ACT_TRAN: /* data transfer */ | |
661 | ||
662 | if (s->trnmod & SDHC_TRNS_READ) { | |
663 | while (length) { | |
664 | if (s->data_count == 0) { | |
665 | for (n = 0; n < block_size; n++) { | |
666 | s->fifo_buffer[n] = sd_read_data(s->card); | |
667 | } | |
668 | } | |
669 | begin = s->data_count; | |
670 | if ((length + begin) < block_size) { | |
671 | s->data_count = length + begin; | |
672 | length = 0; | |
673 | } else { | |
674 | s->data_count = block_size; | |
675 | length -= block_size - begin; | |
676 | } | |
df32fd1c | 677 | dma_memory_write(&address_space_memory, dscr.addr, |
d7dfca08 IM |
678 | &s->fifo_buffer[begin], |
679 | s->data_count - begin); | |
680 | dscr.addr += s->data_count - begin; | |
681 | if (s->data_count == block_size) { | |
682 | s->data_count = 0; | |
683 | if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { | |
684 | s->blkcnt--; | |
685 | if (s->blkcnt == 0) { | |
686 | break; | |
687 | } | |
688 | } | |
689 | } | |
690 | } | |
691 | } else { | |
692 | while (length) { | |
693 | begin = s->data_count; | |
694 | if ((length + begin) < block_size) { | |
695 | s->data_count = length + begin; | |
696 | length = 0; | |
697 | } else { | |
698 | s->data_count = block_size; | |
699 | length -= block_size - begin; | |
700 | } | |
df32fd1c | 701 | dma_memory_read(&address_space_memory, dscr.addr, |
9db11cef PC |
702 | &s->fifo_buffer[begin], |
703 | s->data_count - begin); | |
d7dfca08 IM |
704 | dscr.addr += s->data_count - begin; |
705 | if (s->data_count == block_size) { | |
706 | for (n = 0; n < block_size; n++) { | |
707 | sd_write_data(s->card, s->fifo_buffer[n]); | |
708 | } | |
709 | s->data_count = 0; | |
710 | if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { | |
711 | s->blkcnt--; | |
712 | if (s->blkcnt == 0) { | |
713 | break; | |
714 | } | |
715 | } | |
716 | } | |
717 | } | |
718 | } | |
719 | s->admasysaddr += dscr.incr; | |
720 | break; | |
721 | case SDHC_ADMA_ATTR_ACT_LINK: /* link to next descriptor table */ | |
722 | s->admasysaddr = dscr.addr; | |
be9c5dde SPB |
723 | DPRINT_L1("ADMA link: admasysaddr=0x%" PRIx64 "\n", |
724 | s->admasysaddr); | |
d7dfca08 IM |
725 | break; |
726 | default: | |
727 | s->admasysaddr += dscr.incr; | |
728 | break; | |
729 | } | |
730 | ||
1d32c26f | 731 | if (dscr.attr & SDHC_ADMA_ATTR_INT) { |
be9c5dde SPB |
732 | DPRINT_L1("ADMA interrupt: admasysaddr=0x%" PRIx64 "\n", |
733 | s->admasysaddr); | |
1d32c26f PC |
734 | if (s->norintstsen & SDHC_NISEN_DMA) { |
735 | s->norintsts |= SDHC_NIS_DMA; | |
736 | } | |
737 | ||
738 | sdhci_update_irq(s); | |
739 | } | |
740 | ||
d7dfca08 IM |
741 | /* ADMA transfer terminates if blkcnt == 0 or by END attribute */ |
742 | if (((s->trnmod & SDHC_TRNS_BLK_CNT_EN) && | |
743 | (s->blkcnt == 0)) || (dscr.attr & SDHC_ADMA_ATTR_END)) { | |
744 | DPRINT_L2("ADMA transfer completed\n"); | |
745 | if (length || ((dscr.attr & SDHC_ADMA_ATTR_END) && | |
746 | (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && | |
747 | s->blkcnt != 0)) { | |
748 | ERRPRINT("SD/MMC host ADMA length mismatch\n"); | |
749 | s->admaerr |= SDHC_ADMAERR_LENGTH_MISMATCH | | |
750 | SDHC_ADMAERR_STATE_ST_TFR; | |
751 | if (s->errintstsen & SDHC_EISEN_ADMAERR) { | |
752 | ERRPRINT("Set ADMA error flag\n"); | |
753 | s->errintsts |= SDHC_EIS_ADMAERR; | |
754 | s->norintsts |= SDHC_NIS_ERR; | |
755 | } | |
756 | ||
757 | sdhci_update_irq(s); | |
758 | } | |
d368ba43 | 759 | sdhci_end_transfer(s); |
d7dfca08 IM |
760 | return; |
761 | } | |
762 | ||
d7dfca08 IM |
763 | } |
764 | ||
085d8134 | 765 | /* we have unfinished business - reschedule to continue ADMA */ |
bc72ad67 AB |
766 | timer_mod(s->transfer_timer, |
767 | qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_TRANSFER_DELAY); | |
d7dfca08 IM |
768 | } |
769 | ||
770 | /* Perform data transfer according to controller configuration */ | |
771 | ||
d368ba43 | 772 | static void sdhci_data_transfer(void *opaque) |
d7dfca08 | 773 | { |
d368ba43 | 774 | SDHCIState *s = (SDHCIState *)opaque; |
d7dfca08 IM |
775 | |
776 | if (s->trnmod & SDHC_TRNS_DMA) { | |
777 | switch (SDHC_DMA_TYPE(s->hostctl)) { | |
778 | case SDHC_CTRL_SDMA: | |
779 | if ((s->trnmod & SDHC_TRNS_MULTI) && | |
780 | (!(s->trnmod & SDHC_TRNS_BLK_CNT_EN) || s->blkcnt == 0)) { | |
781 | break; | |
782 | } | |
783 | ||
784 | if ((s->blkcnt == 1) || !(s->trnmod & SDHC_TRNS_MULTI)) { | |
d368ba43 | 785 | sdhci_sdma_transfer_single_block(s); |
d7dfca08 | 786 | } else { |
d368ba43 | 787 | sdhci_sdma_transfer_multi_blocks(s); |
d7dfca08 IM |
788 | } |
789 | ||
790 | break; | |
791 | case SDHC_CTRL_ADMA1_32: | |
792 | if (!(s->capareg & SDHC_CAN_DO_ADMA1)) { | |
793 | ERRPRINT("ADMA1 not supported\n"); | |
794 | break; | |
795 | } | |
796 | ||
d368ba43 | 797 | sdhci_do_adma(s); |
d7dfca08 IM |
798 | break; |
799 | case SDHC_CTRL_ADMA2_32: | |
800 | if (!(s->capareg & SDHC_CAN_DO_ADMA2)) { | |
801 | ERRPRINT("ADMA2 not supported\n"); | |
802 | break; | |
803 | } | |
804 | ||
d368ba43 | 805 | sdhci_do_adma(s); |
d7dfca08 IM |
806 | break; |
807 | case SDHC_CTRL_ADMA2_64: | |
808 | if (!(s->capareg & SDHC_CAN_DO_ADMA2) || | |
809 | !(s->capareg & SDHC_64_BIT_BUS_SUPPORT)) { | |
810 | ERRPRINT("64 bit ADMA not supported\n"); | |
811 | break; | |
812 | } | |
813 | ||
d368ba43 | 814 | sdhci_do_adma(s); |
d7dfca08 IM |
815 | break; |
816 | default: | |
817 | ERRPRINT("Unsupported DMA type\n"); | |
818 | break; | |
819 | } | |
820 | } else { | |
821 | if ((s->trnmod & SDHC_TRNS_READ) && sd_data_ready(s->card)) { | |
822 | s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT | | |
823 | SDHC_DAT_LINE_ACTIVE; | |
d368ba43 | 824 | sdhci_read_block_from_card(s); |
d7dfca08 IM |
825 | } else { |
826 | s->prnsts |= SDHC_DOING_WRITE | SDHC_DAT_LINE_ACTIVE | | |
827 | SDHC_SPACE_AVAILABLE | SDHC_DATA_INHIBIT; | |
d368ba43 | 828 | sdhci_write_block_to_card(s); |
d7dfca08 IM |
829 | } |
830 | } | |
831 | } | |
832 | ||
833 | static bool sdhci_can_issue_command(SDHCIState *s) | |
834 | { | |
835 | if (!SDHC_CLOCK_IS_ON(s->clkcon) || !(s->pwrcon & SDHC_POWER_ON) || | |
836 | (((s->prnsts & SDHC_DATA_INHIBIT) || s->stopped_state) && | |
837 | ((s->cmdreg & SDHC_CMD_DATA_PRESENT) || | |
838 | ((s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY && | |
839 | !(SDHC_COMMAND_TYPE(s->cmdreg) == SDHC_CMD_ABORT))))) { | |
840 | return false; | |
841 | } | |
842 | ||
843 | return true; | |
844 | } | |
845 | ||
846 | /* The Buffer Data Port register must be accessed in sequential and | |
847 | * continuous manner */ | |
848 | static inline bool | |
849 | sdhci_buff_access_is_sequential(SDHCIState *s, unsigned byte_num) | |
850 | { | |
851 | if ((s->data_count & 0x3) != byte_num) { | |
852 | ERRPRINT("Non-sequential access to Buffer Data Port register" | |
853 | "is prohibited\n"); | |
854 | return false; | |
855 | } | |
856 | return true; | |
857 | } | |
858 | ||
d368ba43 | 859 | static uint64_t sdhci_read(void *opaque, hwaddr offset, unsigned size) |
d7dfca08 | 860 | { |
d368ba43 | 861 | SDHCIState *s = (SDHCIState *)opaque; |
d7dfca08 IM |
862 | uint32_t ret = 0; |
863 | ||
864 | switch (offset & ~0x3) { | |
865 | case SDHC_SYSAD: | |
866 | ret = s->sdmasysad; | |
867 | break; | |
868 | case SDHC_BLKSIZE: | |
869 | ret = s->blksize | (s->blkcnt << 16); | |
870 | break; | |
871 | case SDHC_ARGUMENT: | |
872 | ret = s->argument; | |
873 | break; | |
874 | case SDHC_TRNMOD: | |
875 | ret = s->trnmod | (s->cmdreg << 16); | |
876 | break; | |
877 | case SDHC_RSPREG0 ... SDHC_RSPREG3: | |
878 | ret = s->rspreg[((offset & ~0x3) - SDHC_RSPREG0) >> 2]; | |
879 | break; | |
880 | case SDHC_BDATA: | |
881 | if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) { | |
d368ba43 KC |
882 | ret = sdhci_read_dataport(s, size); |
883 | DPRINT_L2("read %ub: addr[0x%04x] -> %u(0x%x)\n", size, (int)offset, | |
677ff2ae | 884 | ret, ret); |
d7dfca08 IM |
885 | return ret; |
886 | } | |
887 | break; | |
888 | case SDHC_PRNSTS: | |
889 | ret = s->prnsts; | |
890 | break; | |
891 | case SDHC_HOSTCTL: | |
892 | ret = s->hostctl | (s->pwrcon << 8) | (s->blkgap << 16) | | |
893 | (s->wakcon << 24); | |
894 | break; | |
895 | case SDHC_CLKCON: | |
896 | ret = s->clkcon | (s->timeoutcon << 16); | |
897 | break; | |
898 | case SDHC_NORINTSTS: | |
899 | ret = s->norintsts | (s->errintsts << 16); | |
900 | break; | |
901 | case SDHC_NORINTSTSEN: | |
902 | ret = s->norintstsen | (s->errintstsen << 16); | |
903 | break; | |
904 | case SDHC_NORINTSIGEN: | |
905 | ret = s->norintsigen | (s->errintsigen << 16); | |
906 | break; | |
907 | case SDHC_ACMD12ERRSTS: | |
908 | ret = s->acmd12errsts; | |
909 | break; | |
910 | case SDHC_CAPAREG: | |
911 | ret = s->capareg; | |
912 | break; | |
913 | case SDHC_MAXCURR: | |
914 | ret = s->maxcurr; | |
915 | break; | |
916 | case SDHC_ADMAERR: | |
917 | ret = s->admaerr; | |
918 | break; | |
919 | case SDHC_ADMASYSADDR: | |
920 | ret = (uint32_t)s->admasysaddr; | |
921 | break; | |
922 | case SDHC_ADMASYSADDR + 4: | |
923 | ret = (uint32_t)(s->admasysaddr >> 32); | |
924 | break; | |
925 | case SDHC_SLOT_INT_STATUS: | |
926 | ret = (SD_HOST_SPECv2_VERS << 16) | sdhci_slotint(s); | |
927 | break; | |
928 | default: | |
d368ba43 | 929 | ERRPRINT("bad %ub read: addr[0x%04x]\n", size, (int)offset); |
d7dfca08 IM |
930 | break; |
931 | } | |
932 | ||
933 | ret >>= (offset & 0x3) * 8; | |
934 | ret &= (1ULL << (size * 8)) - 1; | |
d368ba43 | 935 | DPRINT_L2("read %ub: addr[0x%04x] -> %u(0x%x)\n", size, (int)offset, ret, ret); |
d7dfca08 IM |
936 | return ret; |
937 | } | |
938 | ||
939 | static inline void sdhci_blkgap_write(SDHCIState *s, uint8_t value) | |
940 | { | |
941 | if ((value & SDHC_STOP_AT_GAP_REQ) && (s->blkgap & SDHC_STOP_AT_GAP_REQ)) { | |
942 | return; | |
943 | } | |
944 | s->blkgap = value & SDHC_STOP_AT_GAP_REQ; | |
945 | ||
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; | |
d368ba43 | 950 | sdhci_read_block_from_card(s); |
d7dfca08 IM |
951 | } else { |
952 | s->prnsts |= SDHC_DAT_LINE_ACTIVE | SDHC_DOING_WRITE; | |
d368ba43 | 953 | sdhci_write_block_to_card(s); |
d7dfca08 IM |
954 | } |
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; | |
961 | } | |
962 | } | |
963 | } | |
964 | ||
965 | static inline void sdhci_reset_write(SDHCIState *s, uint8_t value) | |
966 | { | |
967 | switch (value) { | |
968 | case SDHC_RESET_ALL: | |
d368ba43 | 969 | sdhci_reset(s); |
d7dfca08 IM |
970 | break; |
971 | case SDHC_RESET_CMD: | |
972 | s->prnsts &= ~SDHC_CMD_INHIBIT; | |
973 | s->norintsts &= ~SDHC_NIS_CMDCMP; | |
974 | break; | |
975 | case SDHC_RESET_DATA: | |
976 | s->data_count = 0; | |
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); | |
984 | break; | |
985 | } | |
986 | } | |
987 | ||
988 | static void | |
d368ba43 | 989 | sdhci_write(void *opaque, hwaddr offset, uint64_t val, unsigned size) |
d7dfca08 | 990 | { |
d368ba43 | 991 | SDHCIState *s = (SDHCIState *)opaque; |
d7dfca08 IM |
992 | unsigned shift = 8 * (offset & 0x3); |
993 | uint32_t mask = ~(((1ULL << (size * 8)) - 1) << shift); | |
d368ba43 | 994 | uint32_t value = val; |
d7dfca08 IM |
995 | value <<= shift; |
996 | ||
997 | switch (offset & ~0x3) { | |
998 | case SDHC_SYSAD: | |
999 | s->sdmasysad = (s->sdmasysad & mask) | value; | |
1000 | MASKED_WRITE(s->sdmasysad, mask, value); | |
1001 | /* Writing to last byte of sdmasysad might trigger transfer */ | |
1002 | if (!(mask & 0xFF000000) && TRANSFERRING_DATA(s->prnsts) && s->blkcnt && | |
1003 | s->blksize && SDHC_DMA_TYPE(s->hostctl) == SDHC_CTRL_SDMA) { | |
d368ba43 | 1004 | sdhci_sdma_transfer_multi_blocks(s); |
d7dfca08 IM |
1005 | } |
1006 | break; | |
1007 | case SDHC_BLKSIZE: | |
1008 | if (!TRANSFERRING_DATA(s->prnsts)) { | |
1009 | MASKED_WRITE(s->blksize, mask, value); | |
1010 | MASKED_WRITE(s->blkcnt, mask >> 16, value >> 16); | |
1011 | } | |
1012 | break; | |
1013 | case SDHC_ARGUMENT: | |
1014 | MASKED_WRITE(s->argument, mask, value); | |
1015 | break; | |
1016 | case SDHC_TRNMOD: | |
1017 | /* DMA can be enabled only if it is supported as indicated by | |
1018 | * capabilities register */ | |
1019 | if (!(s->capareg & SDHC_CAN_DO_DMA)) { | |
1020 | value &= ~SDHC_TRNS_DMA; | |
1021 | } | |
1022 | MASKED_WRITE(s->trnmod, mask, value); | |
1023 | MASKED_WRITE(s->cmdreg, mask >> 16, value >> 16); | |
1024 | ||
1025 | /* Writing to the upper byte of CMDREG triggers SD command generation */ | |
d368ba43 | 1026 | if ((mask & 0xFF000000) || !sdhci_can_issue_command(s)) { |
d7dfca08 IM |
1027 | break; |
1028 | } | |
1029 | ||
d368ba43 | 1030 | sdhci_send_command(s); |
d7dfca08 IM |
1031 | break; |
1032 | case SDHC_BDATA: | |
1033 | if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) { | |
d368ba43 | 1034 | sdhci_write_dataport(s, value >> shift, size); |
d7dfca08 IM |
1035 | } |
1036 | break; | |
1037 | case SDHC_HOSTCTL: | |
1038 | if (!(mask & 0xFF0000)) { | |
1039 | sdhci_blkgap_write(s, value >> 16); | |
1040 | } | |
1041 | MASKED_WRITE(s->hostctl, mask, value); | |
1042 | MASKED_WRITE(s->pwrcon, mask >> 8, value >> 8); | |
1043 | MASKED_WRITE(s->wakcon, mask >> 24, value >> 24); | |
1044 | if (!(s->prnsts & SDHC_CARD_PRESENT) || ((s->pwrcon >> 1) & 0x7) < 5 || | |
1045 | !(s->capareg & (1 << (31 - ((s->pwrcon >> 1) & 0x7))))) { | |
1046 | s->pwrcon &= ~SDHC_POWER_ON; | |
1047 | } | |
1048 | break; | |
1049 | case SDHC_CLKCON: | |
1050 | if (!(mask & 0xFF000000)) { | |
1051 | sdhci_reset_write(s, value >> 24); | |
1052 | } | |
1053 | MASKED_WRITE(s->clkcon, mask, value); | |
1054 | MASKED_WRITE(s->timeoutcon, mask >> 16, value >> 16); | |
1055 | if (s->clkcon & SDHC_CLOCK_INT_EN) { | |
1056 | s->clkcon |= SDHC_CLOCK_INT_STABLE; | |
1057 | } else { | |
1058 | s->clkcon &= ~SDHC_CLOCK_INT_STABLE; | |
1059 | } | |
1060 | break; | |
1061 | case SDHC_NORINTSTS: | |
1062 | if (s->norintstsen & SDHC_NISEN_CARDINT) { | |
1063 | value &= ~SDHC_NIS_CARDINT; | |
1064 | } | |
1065 | s->norintsts &= mask | ~value; | |
1066 | s->errintsts &= (mask >> 16) | ~(value >> 16); | |
1067 | if (s->errintsts) { | |
1068 | s->norintsts |= SDHC_NIS_ERR; | |
1069 | } else { | |
1070 | s->norintsts &= ~SDHC_NIS_ERR; | |
1071 | } | |
1072 | sdhci_update_irq(s); | |
1073 | break; | |
1074 | case SDHC_NORINTSTSEN: | |
1075 | MASKED_WRITE(s->norintstsen, mask, value); | |
1076 | MASKED_WRITE(s->errintstsen, mask >> 16, value >> 16); | |
1077 | s->norintsts &= s->norintstsen; | |
1078 | s->errintsts &= s->errintstsen; | |
1079 | if (s->errintsts) { | |
1080 | s->norintsts |= SDHC_NIS_ERR; | |
1081 | } else { | |
1082 | s->norintsts &= ~SDHC_NIS_ERR; | |
1083 | } | |
1084 | sdhci_update_irq(s); | |
1085 | break; | |
1086 | case SDHC_NORINTSIGEN: | |
1087 | MASKED_WRITE(s->norintsigen, mask, value); | |
1088 | MASKED_WRITE(s->errintsigen, mask >> 16, value >> 16); | |
1089 | sdhci_update_irq(s); | |
1090 | break; | |
1091 | case SDHC_ADMAERR: | |
1092 | MASKED_WRITE(s->admaerr, mask, value); | |
1093 | break; | |
1094 | case SDHC_ADMASYSADDR: | |
1095 | s->admasysaddr = (s->admasysaddr & (0xFFFFFFFF00000000ULL | | |
1096 | (uint64_t)mask)) | (uint64_t)value; | |
1097 | break; | |
1098 | case SDHC_ADMASYSADDR + 4: | |
1099 | s->admasysaddr = (s->admasysaddr & (0x00000000FFFFFFFFULL | | |
1100 | ((uint64_t)mask << 32))) | ((uint64_t)value << 32); | |
1101 | break; | |
1102 | case SDHC_FEAER: | |
1103 | s->acmd12errsts |= value; | |
1104 | s->errintsts |= (value >> 16) & s->errintstsen; | |
1105 | if (s->acmd12errsts) { | |
1106 | s->errintsts |= SDHC_EIS_CMD12ERR; | |
1107 | } | |
1108 | if (s->errintsts) { | |
1109 | s->norintsts |= SDHC_NIS_ERR; | |
1110 | } | |
1111 | sdhci_update_irq(s); | |
1112 | break; | |
1113 | default: | |
1114 | ERRPRINT("bad %ub write offset: addr[0x%04x] <- %u(0x%x)\n", | |
d368ba43 | 1115 | size, (int)offset, value >> shift, value >> shift); |
d7dfca08 IM |
1116 | break; |
1117 | } | |
1118 | DPRINT_L2("write %ub: addr[0x%04x] <- %u(0x%x)\n", | |
d368ba43 | 1119 | size, (int)offset, value >> shift, value >> shift); |
d7dfca08 IM |
1120 | } |
1121 | ||
1122 | static const MemoryRegionOps sdhci_mmio_ops = { | |
d368ba43 KC |
1123 | .read = sdhci_read, |
1124 | .write = sdhci_write, | |
d7dfca08 IM |
1125 | .valid = { |
1126 | .min_access_size = 1, | |
1127 | .max_access_size = 4, | |
1128 | .unaligned = false | |
1129 | }, | |
1130 | .endianness = DEVICE_LITTLE_ENDIAN, | |
1131 | }; | |
1132 | ||
1133 | static inline unsigned int sdhci_get_fifolen(SDHCIState *s) | |
1134 | { | |
1135 | switch (SDHC_CAPAB_BLOCKSIZE(s->capareg)) { | |
1136 | case 0: | |
1137 | return 512; | |
1138 | case 1: | |
1139 | return 1024; | |
1140 | case 2: | |
1141 | return 2048; | |
1142 | default: | |
1143 | hw_error("SDHC: unsupported value for maximum block size\n"); | |
1144 | return 0; | |
1145 | } | |
1146 | } | |
1147 | ||
7302dcd6 | 1148 | static void sdhci_initfn(SDHCIState *s) |
d7dfca08 | 1149 | { |
d7dfca08 IM |
1150 | DriveInfo *di; |
1151 | ||
af9e40aa | 1152 | /* FIXME use a qdev drive property instead of drive_get_next() */ |
d7dfca08 | 1153 | di = drive_get_next(IF_SD); |
4be74634 | 1154 | s->card = sd_init(di ? blk_by_legacy_dinfo(di) : NULL, false); |
4f8a066b KW |
1155 | if (s->card == NULL) { |
1156 | exit(1); | |
1157 | } | |
f3c7d038 AF |
1158 | s->eject_cb = qemu_allocate_irq(sdhci_insert_eject_cb, s, 0); |
1159 | s->ro_cb = qemu_allocate_irq(sdhci_card_readonly_cb, s, 0); | |
d7dfca08 IM |
1160 | sd_set_cb(s->card, s->ro_cb, s->eject_cb); |
1161 | ||
bc72ad67 | 1162 | s->insert_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sdhci_raise_insertion_irq, s); |
d368ba43 | 1163 | s->transfer_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sdhci_data_transfer, s); |
d7dfca08 IM |
1164 | } |
1165 | ||
7302dcd6 | 1166 | static void sdhci_uninitfn(SDHCIState *s) |
d7dfca08 | 1167 | { |
bc72ad67 AB |
1168 | timer_del(s->insert_timer); |
1169 | timer_free(s->insert_timer); | |
1170 | timer_del(s->transfer_timer); | |
1171 | timer_free(s->transfer_timer); | |
127a4e1a AF |
1172 | qemu_free_irq(s->eject_cb); |
1173 | qemu_free_irq(s->ro_cb); | |
d7dfca08 | 1174 | |
012aef07 MA |
1175 | g_free(s->fifo_buffer); |
1176 | s->fifo_buffer = NULL; | |
d7dfca08 IM |
1177 | } |
1178 | ||
1179 | const VMStateDescription sdhci_vmstate = { | |
1180 | .name = "sdhci", | |
1181 | .version_id = 1, | |
1182 | .minimum_version_id = 1, | |
35d08458 | 1183 | .fields = (VMStateField[]) { |
d7dfca08 IM |
1184 | VMSTATE_UINT32(sdmasysad, SDHCIState), |
1185 | VMSTATE_UINT16(blksize, SDHCIState), | |
1186 | VMSTATE_UINT16(blkcnt, SDHCIState), | |
1187 | VMSTATE_UINT32(argument, SDHCIState), | |
1188 | VMSTATE_UINT16(trnmod, SDHCIState), | |
1189 | VMSTATE_UINT16(cmdreg, SDHCIState), | |
1190 | VMSTATE_UINT32_ARRAY(rspreg, SDHCIState, 4), | |
1191 | VMSTATE_UINT32(prnsts, SDHCIState), | |
1192 | VMSTATE_UINT8(hostctl, SDHCIState), | |
1193 | VMSTATE_UINT8(pwrcon, SDHCIState), | |
1194 | VMSTATE_UINT8(blkgap, SDHCIState), | |
1195 | VMSTATE_UINT8(wakcon, SDHCIState), | |
1196 | VMSTATE_UINT16(clkcon, SDHCIState), | |
1197 | VMSTATE_UINT8(timeoutcon, SDHCIState), | |
1198 | VMSTATE_UINT8(admaerr, SDHCIState), | |
1199 | VMSTATE_UINT16(norintsts, SDHCIState), | |
1200 | VMSTATE_UINT16(errintsts, SDHCIState), | |
1201 | VMSTATE_UINT16(norintstsen, SDHCIState), | |
1202 | VMSTATE_UINT16(errintstsen, SDHCIState), | |
1203 | VMSTATE_UINT16(norintsigen, SDHCIState), | |
1204 | VMSTATE_UINT16(errintsigen, SDHCIState), | |
1205 | VMSTATE_UINT16(acmd12errsts, SDHCIState), | |
1206 | VMSTATE_UINT16(data_count, SDHCIState), | |
1207 | VMSTATE_UINT64(admasysaddr, SDHCIState), | |
1208 | VMSTATE_UINT8(stopped_state, SDHCIState), | |
1209 | VMSTATE_VBUFFER_UINT32(fifo_buffer, SDHCIState, 1, NULL, 0, buf_maxsz), | |
e720677e PB |
1210 | VMSTATE_TIMER_PTR(insert_timer, SDHCIState), |
1211 | VMSTATE_TIMER_PTR(transfer_timer, SDHCIState), | |
d7dfca08 IM |
1212 | VMSTATE_END_OF_LIST() |
1213 | } | |
1214 | }; | |
1215 | ||
1216 | /* Capabilities registers provide information on supported features of this | |
1217 | * specific host controller implementation */ | |
1218 | static Property sdhci_properties[] = { | |
c7bcc85d | 1219 | DEFINE_PROP_UINT32("capareg", SDHCIState, capareg, |
d7dfca08 | 1220 | SDHC_CAPAB_REG_DEFAULT), |
c7bcc85d | 1221 | DEFINE_PROP_UINT32("maxcurr", SDHCIState, maxcurr, 0), |
d7dfca08 IM |
1222 | DEFINE_PROP_END_OF_LIST(), |
1223 | }; | |
1224 | ||
9af21dbe | 1225 | static void sdhci_pci_realize(PCIDevice *dev, Error **errp) |
224d10ff KC |
1226 | { |
1227 | SDHCIState *s = PCI_SDHCI(dev); | |
1228 | dev->config[PCI_CLASS_PROG] = 0x01; /* Standard Host supported DMA */ | |
1229 | dev->config[PCI_INTERRUPT_PIN] = 0x01; /* interrupt pin A */ | |
1230 | sdhci_initfn(s); | |
1231 | s->buf_maxsz = sdhci_get_fifolen(s); | |
1232 | s->fifo_buffer = g_malloc0(s->buf_maxsz); | |
1233 | s->irq = pci_allocate_irq(dev); | |
1234 | memory_region_init_io(&s->iomem, OBJECT(s), &sdhci_mmio_ops, s, "sdhci", | |
1235 | SDHC_REGISTERS_MAP_SIZE); | |
1236 | pci_register_bar(dev, 0, 0, &s->iomem); | |
224d10ff KC |
1237 | } |
1238 | ||
1239 | static void sdhci_pci_exit(PCIDevice *dev) | |
1240 | { | |
1241 | SDHCIState *s = PCI_SDHCI(dev); | |
1242 | sdhci_uninitfn(s); | |
1243 | } | |
1244 | ||
1245 | static void sdhci_pci_class_init(ObjectClass *klass, void *data) | |
1246 | { | |
1247 | DeviceClass *dc = DEVICE_CLASS(klass); | |
1248 | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); | |
1249 | ||
9af21dbe | 1250 | k->realize = sdhci_pci_realize; |
224d10ff KC |
1251 | k->exit = sdhci_pci_exit; |
1252 | k->vendor_id = PCI_VENDOR_ID_REDHAT; | |
1253 | k->device_id = PCI_DEVICE_ID_REDHAT_SDHCI; | |
1254 | k->class_id = PCI_CLASS_SYSTEM_SDHCI; | |
1255 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); | |
1256 | dc->vmsd = &sdhci_vmstate; | |
1257 | dc->props = sdhci_properties; | |
19109131 MA |
1258 | /* Reason: realize() method uses drive_get_next() */ |
1259 | dc->cannot_instantiate_with_device_add_yet = true; | |
224d10ff KC |
1260 | } |
1261 | ||
1262 | static const TypeInfo sdhci_pci_info = { | |
1263 | .name = TYPE_PCI_SDHCI, | |
1264 | .parent = TYPE_PCI_DEVICE, | |
1265 | .instance_size = sizeof(SDHCIState), | |
1266 | .class_init = sdhci_pci_class_init, | |
1267 | }; | |
1268 | ||
7302dcd6 KC |
1269 | static void sdhci_sysbus_init(Object *obj) |
1270 | { | |
1271 | SDHCIState *s = SYSBUS_SDHCI(obj); | |
1272 | sdhci_initfn(s); | |
1273 | } | |
1274 | ||
1275 | static void sdhci_sysbus_finalize(Object *obj) | |
1276 | { | |
1277 | SDHCIState *s = SYSBUS_SDHCI(obj); | |
1278 | sdhci_uninitfn(s); | |
1279 | } | |
1280 | ||
1281 | static void sdhci_sysbus_realize(DeviceState *dev, Error ** errp) | |
d7dfca08 | 1282 | { |
7302dcd6 | 1283 | SDHCIState *s = SYSBUS_SDHCI(dev); |
d7dfca08 IM |
1284 | SysBusDevice *sbd = SYS_BUS_DEVICE(dev); |
1285 | ||
1286 | s->buf_maxsz = sdhci_get_fifolen(s); | |
1287 | s->fifo_buffer = g_malloc0(s->buf_maxsz); | |
1288 | sysbus_init_irq(sbd, &s->irq); | |
29776739 | 1289 | memory_region_init_io(&s->iomem, OBJECT(s), &sdhci_mmio_ops, s, "sdhci", |
d7dfca08 IM |
1290 | SDHC_REGISTERS_MAP_SIZE); |
1291 | sysbus_init_mmio(sbd, &s->iomem); | |
1292 | } | |
1293 | ||
7302dcd6 | 1294 | static void sdhci_sysbus_class_init(ObjectClass *klass, void *data) |
d7dfca08 IM |
1295 | { |
1296 | DeviceClass *dc = DEVICE_CLASS(klass); | |
d7dfca08 IM |
1297 | |
1298 | dc->vmsd = &sdhci_vmstate; | |
1299 | dc->props = sdhci_properties; | |
7302dcd6 | 1300 | dc->realize = sdhci_sysbus_realize; |
9f9bdf43 MA |
1301 | /* Reason: instance_init() method uses drive_get_next() */ |
1302 | dc->cannot_instantiate_with_device_add_yet = true; | |
d7dfca08 IM |
1303 | } |
1304 | ||
7302dcd6 KC |
1305 | static const TypeInfo sdhci_sysbus_info = { |
1306 | .name = TYPE_SYSBUS_SDHCI, | |
d7dfca08 IM |
1307 | .parent = TYPE_SYS_BUS_DEVICE, |
1308 | .instance_size = sizeof(SDHCIState), | |
7302dcd6 KC |
1309 | .instance_init = sdhci_sysbus_init, |
1310 | .instance_finalize = sdhci_sysbus_finalize, | |
1311 | .class_init = sdhci_sysbus_class_init, | |
d7dfca08 IM |
1312 | }; |
1313 | ||
1314 | static void sdhci_register_types(void) | |
1315 | { | |
224d10ff | 1316 | type_register_static(&sdhci_pci_info); |
7302dcd6 | 1317 | type_register_static(&sdhci_sysbus_info); |
d7dfca08 IM |
1318 | } |
1319 | ||
1320 | type_init(sdhci_register_types) |