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1e57a462 | 1 | /** @file\r |
2 | *\r | |
3 | * Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.\r | |
b0fdce95 | 4 | * Copyright (c) 2011 - 2014, ARM Limited. All rights reserved.\r |
1e57a462 | 5 | *\r |
538311f7 | 6 | * SPDX-License-Identifier: BSD-2-Clause-Patent\r |
1e57a462 | 7 | *\r |
8 | **/\r | |
9 | \r | |
10 | #include "MmcHostDxe.h"\r | |
11 | \r | |
12 | EMBEDDED_EXTERNAL_DEVICE *gTPS65950;\r | |
13 | UINT8 mMaxDataTransferRate = 0;\r | |
14 | UINT32 mRca = 0;\r | |
15 | BOOLEAN mBitModeSet = FALSE;\r | |
16 | \r | |
17 | \r | |
18 | typedef struct {\r | |
19 | VENDOR_DEVICE_PATH Mmc;\r | |
20 | EFI_DEVICE_PATH End;\r | |
21 | } MMCHS_DEVICE_PATH;\r | |
22 | \r | |
23 | MMCHS_DEVICE_PATH gMMCDevicePath = {\r | |
24 | {\r | |
b0fdce95 OM |
25 | {\r |
26 | HARDWARE_DEVICE_PATH,\r | |
27 | HW_VENDOR_DP,\r | |
28 | { (UINT8)(sizeof(VENDOR_DEVICE_PATH)), (UINT8)((sizeof(VENDOR_DEVICE_PATH)) >> 8) },\r | |
29 | },\r | |
30 | { 0xb615f1f5, 0x5088, 0x43cd, { 0x80, 0x9c, 0xa1, 0x6e, 0x52, 0x48, 0x7d, 0x00 } }\r | |
1e57a462 | 31 | },\r |
32 | {\r | |
33 | END_DEVICE_PATH_TYPE,\r | |
34 | END_ENTIRE_DEVICE_PATH_SUBTYPE,\r | |
b0fdce95 | 35 | { sizeof (EFI_DEVICE_PATH_PROTOCOL), 0 }\r |
1e57a462 | 36 | }\r |
37 | };\r | |
38 | \r | |
39 | BOOLEAN\r | |
40 | IgnoreCommand (\r | |
41 | UINT32 Command\r | |
42 | )\r | |
43 | {\r | |
44 | switch(Command) {\r | |
45 | case MMC_CMD12:\r | |
46 | return TRUE;\r | |
47 | case MMC_CMD13:\r | |
48 | return TRUE;\r | |
49 | default:\r | |
50 | return FALSE;\r | |
51 | }\r | |
52 | }\r | |
53 | \r | |
54 | UINT32\r | |
55 | TranslateCommand (\r | |
56 | UINT32 Command\r | |
57 | )\r | |
58 | {\r | |
59 | UINT32 Translation;\r | |
60 | \r | |
61 | switch(Command) {\r | |
62 | case MMC_CMD2:\r | |
63 | Translation = CMD2;\r | |
64 | break;\r | |
65 | case MMC_CMD3:\r | |
66 | Translation = CMD3;\r | |
67 | break;\r | |
68 | /*case MMC_CMD6:\r | |
69 | Translation = CMD6;\r | |
70 | break;*/\r | |
71 | case MMC_CMD7:\r | |
72 | Translation = CMD7;\r | |
73 | break;\r | |
74 | case MMC_CMD8:\r | |
75 | Translation = CMD8;\r | |
76 | break;\r | |
77 | case MMC_CMD9:\r | |
78 | Translation = CMD9;\r | |
79 | break;\r | |
80 | /*case MMC_CMD12:\r | |
81 | Translation = CMD12;\r | |
82 | break;\r | |
83 | case MMC_CMD13:\r | |
84 | Translation = CMD13;\r | |
85 | break;*/\r | |
86 | case MMC_CMD16:\r | |
87 | Translation = CMD16;\r | |
88 | break;\r | |
89 | case MMC_CMD17:\r | |
90 | Translation = 0x113A0014;//CMD17;\r | |
91 | break;\r | |
92 | case MMC_CMD24:\r | |
93 | Translation = CMD24 | 4;\r | |
94 | break;\r | |
95 | case MMC_CMD55:\r | |
96 | Translation = CMD55;\r | |
97 | break;\r | |
98 | case MMC_ACMD41:\r | |
99 | Translation = ACMD41;\r | |
100 | break;\r | |
101 | default:\r | |
102 | Translation = Command;\r | |
103 | }\r | |
104 | \r | |
105 | return Translation;\r | |
106 | }\r | |
107 | \r | |
108 | VOID\r | |
109 | CalculateCardCLKD (\r | |
110 | UINTN *ClockFrequencySelect\r | |
111 | )\r | |
112 | {\r | |
113 | UINTN TransferRateValue = 0;\r | |
114 | UINTN TimeValue = 0 ;\r | |
115 | UINTN Frequency = 0;\r | |
116 | \r | |
117 | DEBUG ((DEBUG_BLKIO, "CalculateCardCLKD()\n"));\r | |
118 | \r | |
119 | // For SD Cards we would need to send CMD6 to set\r | |
120 | // speeds abouve 25MHz. High Speed mode 50 MHz and up\r | |
121 | \r | |
122 | // Calculate Transfer rate unit (Bits 2:0 of TRAN_SPEED)\r | |
123 | switch (mMaxDataTransferRate & 0x7) { // 2\r | |
124 | case 0:\r | |
125 | TransferRateValue = 100 * 1000;\r | |
126 | break;\r | |
127 | \r | |
128 | case 1:\r | |
129 | TransferRateValue = 1 * 1000 * 1000;\r | |
130 | break;\r | |
131 | \r | |
132 | case 2:\r | |
133 | TransferRateValue = 10 * 1000 * 1000;\r | |
134 | break;\r | |
135 | \r | |
136 | case 3:\r | |
137 | TransferRateValue = 100 * 1000 * 1000;\r | |
138 | break;\r | |
139 | \r | |
140 | default:\r | |
141 | DEBUG ((DEBUG_BLKIO, "Invalid parameter.\n"));\r | |
142 | ASSERT(FALSE);\r | |
143 | return;\r | |
144 | }\r | |
145 | \r | |
146 | //Calculate Time value (Bits 6:3 of TRAN_SPEED)\r | |
147 | switch ((mMaxDataTransferRate >> 3) & 0xF) { // 6\r | |
148 | case 1:\r | |
149 | TimeValue = 10;\r | |
150 | break;\r | |
151 | \r | |
152 | case 2:\r | |
153 | TimeValue = 12;\r | |
154 | break;\r | |
155 | \r | |
156 | case 3:\r | |
157 | TimeValue = 13;\r | |
158 | break;\r | |
159 | \r | |
160 | case 4:\r | |
161 | TimeValue = 15;\r | |
162 | break;\r | |
163 | \r | |
164 | case 5:\r | |
165 | TimeValue = 20;\r | |
166 | break;\r | |
167 | \r | |
168 | case 6:\r | |
169 | TimeValue = 25;\r | |
170 | break;\r | |
171 | \r | |
172 | case 7:\r | |
173 | TimeValue = 30;\r | |
174 | break;\r | |
175 | \r | |
176 | case 8:\r | |
177 | TimeValue = 35;\r | |
178 | break;\r | |
179 | \r | |
180 | case 9:\r | |
181 | TimeValue = 40;\r | |
182 | break;\r | |
183 | \r | |
184 | case 10:\r | |
185 | TimeValue = 45;\r | |
186 | break;\r | |
187 | \r | |
188 | case 11:\r | |
189 | TimeValue = 50;\r | |
190 | break;\r | |
191 | \r | |
192 | case 12:\r | |
193 | TimeValue = 55;\r | |
194 | break;\r | |
195 | \r | |
196 | case 13:\r | |
197 | TimeValue = 60;\r | |
198 | break;\r | |
199 | \r | |
200 | case 14:\r | |
201 | TimeValue = 70;\r | |
202 | break;\r | |
203 | \r | |
204 | case 15:\r | |
205 | TimeValue = 80;\r | |
206 | break;\r | |
207 | \r | |
208 | default:\r | |
209 | DEBUG ((DEBUG_BLKIO, "Invalid parameter.\n"));\r | |
210 | ASSERT(FALSE);\r | |
211 | return;\r | |
212 | }\r | |
213 | \r | |
214 | Frequency = TransferRateValue * TimeValue/10;\r | |
215 | \r | |
216 | // Calculate Clock divider value to program in MMCHS_SYSCTL[CLKD] field.\r | |
217 | *ClockFrequencySelect = ((MMC_REFERENCE_CLK/Frequency) + 1);\r | |
218 | \r | |
219 | DEBUG ((DEBUG_BLKIO, "mMaxDataTransferRate: 0x%x, Frequency: %d KHz, ClockFrequencySelect: %x\n", mMaxDataTransferRate, Frequency/1000, *ClockFrequencySelect));\r | |
220 | }\r | |
221 | \r | |
222 | VOID\r | |
223 | UpdateMMCHSClkFrequency (\r | |
224 | UINTN NewCLKD\r | |
225 | )\r | |
226 | {\r | |
227 | DEBUG ((DEBUG_BLKIO, "UpdateMMCHSClkFrequency()\n"));\r | |
228 | \r | |
229 | // Set Clock enable to 0x0 to not provide the clock to the card\r | |
230 | MmioAnd32 (MMCHS_SYSCTL, ~CEN);\r | |
231 | \r | |
232 | // Set new clock frequency.\r | |
3402aac7 | 233 | MmioAndThenOr32 (MMCHS_SYSCTL, ~CLKD_MASK, NewCLKD << 6);\r |
1e57a462 | 234 | \r |
235 | // Poll till Internal Clock Stable\r | |
236 | while ((MmioRead32 (MMCHS_SYSCTL) & ICS_MASK) != ICS);\r | |
237 | \r | |
238 | // Set Clock enable to 0x1 to provide the clock to the card\r | |
239 | MmioOr32 (MMCHS_SYSCTL, CEN);\r | |
240 | }\r | |
241 | \r | |
242 | EFI_STATUS\r | |
243 | InitializeMMCHS (\r | |
244 | VOID\r | |
245 | )\r | |
246 | {\r | |
247 | UINT8 Data;\r | |
248 | EFI_STATUS Status;\r | |
249 | \r | |
250 | DEBUG ((DEBUG_BLKIO, "InitializeMMCHS()\n"));\r | |
251 | \r | |
252 | // Select Device group to belong to P1 device group in Power IC.\r | |
253 | Data = DEV_GRP_P1;\r | |
254 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEV_GRP), 1, &Data);\r | |
255 | ASSERT_EFI_ERROR(Status);\r | |
256 | \r | |
257 | // Configure voltage regulator for MMC1 in Power IC to output 3.0 voltage.\r | |
258 | Data = VSEL_3_00V;\r | |
259 | Status = gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID4, VMMC1_DEDICATED_REG), 1, &Data);\r | |
260 | ASSERT_EFI_ERROR(Status);\r | |
3402aac7 | 261 | \r |
1e57a462 | 262 | // After ramping up voltage, set VDDS stable bit to indicate that voltage level is stable.\r |
263 | MmioOr32 (CONTROL_PBIAS_LITE, (PBIASLITEVMODE0 | PBIASLITEPWRDNZ0 | PBIASSPEEDCTRL0 | PBIASLITEVMODE1 | PBIASLITEWRDNZ1));\r | |
264 | \r | |
265 | // Enable WP GPIO\r | |
266 | MmioAndThenOr32 (GPIO1_BASE + GPIO_OE, ~BIT23, BIT23);\r | |
267 | \r | |
268 | // Enable Card Detect\r | |
269 | Data = CARD_DETECT_ENABLE;\r | |
270 | gTPS65950->Write (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, TPS65950_GPIO_CTRL), 1, &Data);\r | |
271 | \r | |
272 | return Status;\r | |
273 | }\r | |
274 | \r | |
275 | BOOLEAN\r | |
276 | MMCIsCardPresent (\r | |
277 | IN EFI_MMC_HOST_PROTOCOL *This\r | |
278 | )\r | |
279 | {\r | |
280 | EFI_STATUS Status;\r | |
281 | UINT8 Data;\r | |
282 | \r | |
283 | //\r | |
284 | // Card detect is a GPIO0 on the TPS65950\r | |
285 | //\r | |
286 | Status = gTPS65950->Read (gTPS65950, EXTERNAL_DEVICE_REGISTER(I2C_ADDR_GRP_ID2, GPIODATAIN1), 1, &Data);\r | |
287 | if (EFI_ERROR (Status)) {\r | |
288 | return FALSE;\r | |
289 | }\r | |
290 | \r | |
291 | return !(Data & CARD_DETECT_BIT);\r | |
292 | }\r | |
293 | \r | |
294 | BOOLEAN\r | |
295 | MMCIsReadOnly (\r | |
296 | IN EFI_MMC_HOST_PROTOCOL *This\r | |
297 | )\r | |
298 | {\r | |
299 | /* Note:\r | |
3402aac7 | 300 | * On our BeagleBoard the SD card WP pin is always read as TRUE.\r |
1e57a462 | 301 | * Probably something wrong with GPIO configuration.\r |
302 | * BeagleBoard-xM uses microSD cards so there is no write protect at all.\r | |
3402aac7 | 303 | * Hence commenting out SD card WP pin read status.\r |
1e57a462 | 304 | */\r |
305 | //return (MmioRead32 (GPIO1_BASE + GPIO_DATAIN) & BIT23) == BIT23;\r | |
306 | return 0;\r | |
307 | \r | |
308 | }\r | |
309 | \r | |
310 | // TODO\r | |
311 | EFI_GUID mPL180MciDevicePathGuid = EFI_CALLER_ID_GUID;\r | |
312 | \r | |
313 | EFI_STATUS\r | |
314 | MMCBuildDevicePath (\r | |
315 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
316 | IN EFI_DEVICE_PATH_PROTOCOL **DevicePath\r | |
317 | )\r | |
318 | {\r | |
319 | EFI_DEVICE_PATH_PROTOCOL *NewDevicePathNode;\r | |
320 | \r | |
321 | NewDevicePathNode = CreateDeviceNode(HARDWARE_DEVICE_PATH,HW_VENDOR_DP,sizeof(VENDOR_DEVICE_PATH));\r | |
322 | CopyGuid(&((VENDOR_DEVICE_PATH*)NewDevicePathNode)->Guid,&mPL180MciDevicePathGuid);\r | |
323 | *DevicePath = NewDevicePathNode;\r | |
324 | return EFI_SUCCESS;\r | |
325 | }\r | |
326 | \r | |
327 | EFI_STATUS\r | |
328 | MMCSendCommand (\r | |
329 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
330 | IN MMC_CMD MmcCmd,\r | |
331 | IN UINT32 Argument\r | |
332 | )\r | |
333 | {\r | |
334 | UINTN MmcStatus;\r | |
335 | UINTN RetryCount = 0;\r | |
336 | \r | |
337 | if (IgnoreCommand(MmcCmd))\r | |
338 | return EFI_SUCCESS;\r | |
339 | \r | |
340 | MmcCmd = TranslateCommand(MmcCmd);\r | |
341 | \r | |
342 | //DEBUG ((EFI_D_ERROR, "MMCSendCommand(%d)\n", MmcCmd));\r | |
343 | \r | |
344 | // Check if command line is in use or not. Poll till command line is available.\r | |
345 | while ((MmioRead32 (MMCHS_PSTATE) & DATI_MASK) == DATI_NOT_ALLOWED);\r | |
346 | \r | |
347 | // Provide the block size.\r | |
348 | MmioWrite32 (MMCHS_BLK, BLEN_512BYTES);\r | |
349 | \r | |
350 | // Setting Data timeout counter value to max value.\r | |
351 | MmioAndThenOr32 (MMCHS_SYSCTL, ~DTO_MASK, DTO_VAL);\r | |
352 | \r | |
353 | // Clear Status register.\r | |
354 | MmioWrite32 (MMCHS_STAT, 0xFFFFFFFF);\r | |
355 | \r | |
356 | // Set command argument register\r | |
357 | MmioWrite32 (MMCHS_ARG, Argument);\r | |
358 | \r | |
359 | //TODO: fix this\r | |
360 | //Enable interrupt enable events to occur\r | |
361 | //MmioWrite32 (MMCHS_IE, CmdInterruptEnableVal);\r | |
362 | \r | |
363 | // Send a command\r | |
364 | MmioWrite32 (MMCHS_CMD, MmcCmd);\r | |
365 | \r | |
366 | // Check for the command status.\r | |
367 | while (RetryCount < MAX_RETRY_COUNT) {\r | |
368 | do {\r | |
369 | MmcStatus = MmioRead32 (MMCHS_STAT);\r | |
370 | } while (MmcStatus == 0);\r | |
371 | \r | |
372 | // Read status of command response\r | |
373 | if ((MmcStatus & ERRI) != 0) {\r | |
374 | \r | |
375 | // Perform soft-reset for mmci_cmd line.\r | |
376 | MmioOr32 (MMCHS_SYSCTL, SRC);\r | |
377 | while ((MmioRead32 (MMCHS_SYSCTL) & SRC));\r | |
378 | \r | |
379 | //DEBUG ((EFI_D_INFO, "MmcStatus: 0x%x\n", MmcStatus));\r | |
380 | return EFI_DEVICE_ERROR;\r | |
381 | }\r | |
382 | \r | |
383 | // Check if command is completed.\r | |
384 | if ((MmcStatus & CC) == CC) {\r | |
385 | MmioWrite32 (MMCHS_STAT, CC);\r | |
386 | break;\r | |
387 | }\r | |
388 | \r | |
389 | RetryCount++;\r | |
390 | }\r | |
391 | \r | |
392 | if (RetryCount == MAX_RETRY_COUNT) {\r | |
393 | DEBUG ((DEBUG_BLKIO, "MMCSendCommand: Timeout\n"));\r | |
394 | return EFI_TIMEOUT;\r | |
395 | }\r | |
396 | \r | |
397 | return EFI_SUCCESS;\r | |
398 | }\r | |
399 | \r | |
400 | EFI_STATUS\r | |
401 | MMCNotifyState (\r | |
402 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
403 | IN MMC_STATE State\r | |
404 | )\r | |
405 | {\r | |
406 | EFI_STATUS Status;\r | |
407 | UINTN FreqSel;\r | |
408 | \r | |
409 | switch(State) {\r | |
410 | case MmcInvalidState:\r | |
411 | ASSERT(0);\r | |
412 | break;\r | |
413 | case MmcHwInitializationState:\r | |
414 | mBitModeSet = FALSE;\r | |
415 | \r | |
416 | DEBUG ((DEBUG_BLKIO, "MMCHwInitializationState()\n"));\r | |
417 | Status = InitializeMMCHS ();\r | |
418 | if (EFI_ERROR(Status)) {\r | |
419 | DEBUG ((DEBUG_BLKIO, "Initialize MMC host controller fails. Status: %x\n", Status));\r | |
420 | return Status;\r | |
421 | }\r | |
422 | \r | |
423 | // Software reset of the MMCHS host controller.\r | |
424 | MmioWrite32 (MMCHS_SYSCONFIG, SOFTRESET);\r | |
425 | gBS->Stall(1000);\r | |
426 | while ((MmioRead32 (MMCHS_SYSSTATUS) & RESETDONE_MASK) != RESETDONE);\r | |
427 | \r | |
428 | // Soft reset for all.\r | |
429 | MmioWrite32 (MMCHS_SYSCTL, SRA);\r | |
430 | gBS->Stall(1000);\r | |
431 | while ((MmioRead32 (MMCHS_SYSCTL) & SRA) != 0x0);\r | |
432 | \r | |
433 | //Voltage capabilities initialization. Activate VS18 and VS30.\r | |
434 | MmioOr32 (MMCHS_CAPA, (VS30 | VS18));\r | |
435 | \r | |
436 | // Wakeup configuration\r | |
437 | MmioOr32 (MMCHS_SYSCONFIG, ENAWAKEUP);\r | |
438 | MmioOr32 (MMCHS_HCTL, IWE);\r | |
439 | \r | |
440 | // MMCHS Controller default initialization\r | |
441 | MmioOr32 (MMCHS_CON, (OD | DW8_1_4_BIT | CEATA_OFF));\r | |
442 | \r | |
443 | MmioWrite32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_OFF));\r | |
444 | \r | |
445 | // Enable internal clock\r | |
446 | MmioOr32 (MMCHS_SYSCTL, ICE);\r | |
447 | \r | |
448 | // Set the clock frequency to 80KHz.\r | |
449 | UpdateMMCHSClkFrequency (CLKD_80KHZ);\r | |
450 | \r | |
451 | // Enable SD bus power.\r | |
452 | MmioOr32 (MMCHS_HCTL, (SDBP_ON));\r | |
453 | \r | |
454 | // Poll till SD bus power bit is set.\r | |
455 | while ((MmioRead32 (MMCHS_HCTL) & SDBP_MASK) != SDBP_ON);\r | |
456 | \r | |
457 | // Enable interrupts.\r | |
458 | MmioWrite32 (MMCHS_IE, (BADA_EN | CERR_EN | DEB_EN | DCRC_EN | DTO_EN | CIE_EN |\r | |
459 | CEB_EN | CCRC_EN | CTO_EN | BRR_EN | BWR_EN | TC_EN | CC_EN));\r | |
460 | \r | |
461 | // Controller INIT procedure start.\r | |
462 | MmioOr32 (MMCHS_CON, INIT);\r | |
463 | MmioWrite32 (MMCHS_CMD, 0x00000000);\r | |
464 | while (!(MmioRead32 (MMCHS_STAT) & CC));\r | |
465 | \r | |
466 | // Wait for 1 ms\r | |
467 | gBS->Stall (1000);\r | |
468 | \r | |
469 | // Set CC bit to 0x1 to clear the flag\r | |
470 | MmioOr32 (MMCHS_STAT, CC);\r | |
471 | \r | |
472 | // Retry INIT procedure.\r | |
473 | MmioWrite32 (MMCHS_CMD, 0x00000000);\r | |
474 | while (!(MmioRead32 (MMCHS_STAT) & CC));\r | |
475 | \r | |
476 | // End initialization sequence\r | |
477 | MmioAnd32 (MMCHS_CON, ~INIT);\r | |
478 | \r | |
479 | MmioOr32 (MMCHS_HCTL, (SDVS_3_0_V | DTW_1_BIT | SDBP_ON));\r | |
480 | \r | |
481 | // Change clock frequency to 400KHz to fit protocol\r | |
482 | UpdateMMCHSClkFrequency(CLKD_400KHZ);\r | |
483 | \r | |
484 | MmioOr32 (MMCHS_CON, OD);\r | |
485 | break;\r | |
486 | case MmcIdleState:\r | |
487 | break;\r | |
488 | case MmcReadyState:\r | |
489 | break;\r | |
490 | case MmcIdentificationState:\r | |
491 | break;\r | |
492 | case MmcStandByState:\r | |
493 | CalculateCardCLKD (&FreqSel);\r | |
494 | UpdateMMCHSClkFrequency (FreqSel);\r | |
495 | break;\r | |
496 | case MmcTransferState:\r | |
497 | if (!mBitModeSet) {\r | |
498 | Status = MMCSendCommand (This, CMD55, mRca << 16);\r | |
499 | if (!EFI_ERROR (Status)) {\r | |
500 | // Set device into 4-bit data bus mode\r | |
501 | Status = MMCSendCommand (This, ACMD6, 0x2);\r | |
502 | if (!EFI_ERROR (Status)) {\r | |
503 | // Set host controler into 4-bit mode\r | |
504 | MmioOr32 (MMCHS_HCTL, DTW_4_BIT);\r | |
505 | DEBUG ((DEBUG_BLKIO, "SD Memory Card set to 4-bit mode\n"));\r | |
506 | mBitModeSet = TRUE;\r | |
507 | }\r | |
508 | }\r | |
509 | }\r | |
510 | break;\r | |
511 | case MmcSendingDataState:\r | |
512 | break;\r | |
513 | case MmcReceiveDataState:\r | |
514 | break;\r | |
515 | case MmcProgrammingState:\r | |
516 | break;\r | |
517 | case MmcDisconnectState:\r | |
518 | default:\r | |
519 | ASSERT(0);\r | |
520 | }\r | |
521 | return EFI_SUCCESS;\r | |
522 | }\r | |
523 | \r | |
524 | EFI_STATUS\r | |
525 | MMCReceiveResponse (\r | |
526 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
527 | IN MMC_RESPONSE_TYPE Type,\r | |
528 | IN UINT32* Buffer\r | |
529 | )\r | |
530 | {\r | |
531 | if (Buffer == NULL) {\r | |
532 | return EFI_INVALID_PARAMETER;\r | |
533 | }\r | |
534 | \r | |
535 | if (Type == MMC_RESPONSE_TYPE_R2) {\r | |
536 | Buffer[0] = MmioRead32 (MMCHS_RSP10);\r | |
537 | Buffer[1] = MmioRead32 (MMCHS_RSP32);\r | |
538 | Buffer[2] = MmioRead32 (MMCHS_RSP54);\r | |
539 | Buffer[3] = MmioRead32 (MMCHS_RSP76);\r | |
540 | } else {\r | |
541 | Buffer[0] = MmioRead32 (MMCHS_RSP10);\r | |
542 | }\r | |
543 | \r | |
544 | if (Type == MMC_RESPONSE_TYPE_CSD) {\r | |
545 | mMaxDataTransferRate = Buffer[3] & 0xFF;\r | |
546 | } else if (Type == MMC_RESPONSE_TYPE_RCA) {\r | |
547 | mRca = Buffer[0] >> 16;\r | |
548 | }\r | |
549 | \r | |
550 | return EFI_SUCCESS;\r | |
551 | }\r | |
552 | \r | |
553 | EFI_STATUS\r | |
554 | MMCReadBlockData (\r | |
555 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
556 | IN EFI_LBA Lba,\r | |
557 | IN UINTN Length,\r | |
558 | IN UINT32* Buffer\r | |
559 | )\r | |
560 | {\r | |
561 | UINTN MmcStatus;\r | |
562 | UINTN Count;\r | |
563 | UINTN RetryCount = 0;\r | |
564 | \r | |
565 | DEBUG ((DEBUG_BLKIO, "MMCReadBlockData(LBA: 0x%x, Length: 0x%x, Buffer: 0x%x)\n", Lba, Length, Buffer));\r | |
566 | \r | |
567 | // Check controller status to make sure there is no error.\r | |
568 | while (RetryCount < MAX_RETRY_COUNT) {\r | |
569 | do {\r | |
570 | // Read Status.\r | |
571 | MmcStatus = MmioRead32 (MMCHS_STAT);\r | |
572 | } while(MmcStatus == 0);\r | |
573 | \r | |
574 | // Check if Buffer read ready (BRR) bit is set?\r | |
575 | if (MmcStatus & BRR) {\r | |
576 | \r | |
577 | // Clear BRR bit\r | |
578 | MmioOr32 (MMCHS_STAT, BRR);\r | |
579 | \r | |
580 | for (Count = 0; Count < Length / 4; Count++) {\r | |
581 | *Buffer++ = MmioRead32(MMCHS_DATA);\r | |
582 | }\r | |
583 | break;\r | |
584 | }\r | |
585 | RetryCount++;\r | |
586 | }\r | |
587 | \r | |
588 | if (RetryCount == MAX_RETRY_COUNT) {\r | |
589 | return EFI_TIMEOUT;\r | |
590 | }\r | |
591 | \r | |
592 | return EFI_SUCCESS;\r | |
593 | }\r | |
594 | \r | |
595 | EFI_STATUS\r | |
596 | MMCWriteBlockData (\r | |
597 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
598 | IN EFI_LBA Lba,\r | |
599 | IN UINTN Length,\r | |
600 | IN UINT32* Buffer\r | |
601 | )\r | |
602 | {\r | |
603 | UINTN MmcStatus;\r | |
604 | UINTN Count;\r | |
605 | UINTN RetryCount = 0;\r | |
606 | \r | |
607 | // Check controller status to make sure there is no error.\r | |
608 | while (RetryCount < MAX_RETRY_COUNT) {\r | |
609 | do {\r | |
610 | // Read Status.\r | |
611 | MmcStatus = MmioRead32 (MMCHS_STAT);\r | |
612 | } while(MmcStatus == 0);\r | |
613 | \r | |
614 | // Check if Buffer write ready (BWR) bit is set?\r | |
615 | if (MmcStatus & BWR) {\r | |
616 | \r | |
617 | // Clear BWR bit\r | |
618 | MmioOr32 (MMCHS_STAT, BWR);\r | |
619 | \r | |
620 | // Write block worth of data.\r | |
621 | for (Count = 0; Count < Length / 4; Count++) {\r | |
622 | MmioWrite32 (MMCHS_DATA, *Buffer++);\r | |
623 | }\r | |
624 | \r | |
625 | break;\r | |
626 | }\r | |
627 | RetryCount++;\r | |
628 | }\r | |
629 | \r | |
630 | if (RetryCount == MAX_RETRY_COUNT) {\r | |
631 | return EFI_TIMEOUT;\r | |
632 | }\r | |
633 | \r | |
634 | return EFI_SUCCESS;\r | |
635 | }\r | |
636 | \r | |
637 | EFI_MMC_HOST_PROTOCOL gMMCHost = {\r | |
638 | MMC_HOST_PROTOCOL_REVISION,\r | |
639 | MMCIsCardPresent,\r | |
640 | MMCIsReadOnly,\r | |
641 | MMCBuildDevicePath,\r | |
642 | MMCNotifyState,\r | |
643 | MMCSendCommand,\r | |
644 | MMCReceiveResponse,\r | |
645 | MMCReadBlockData,\r | |
646 | MMCWriteBlockData\r | |
647 | };\r | |
648 | \r | |
649 | EFI_STATUS\r | |
650 | MMCInitialize (\r | |
651 | IN EFI_HANDLE ImageHandle,\r | |
652 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
653 | )\r | |
654 | {\r | |
655 | EFI_STATUS Status;\r | |
656 | EFI_HANDLE Handle = NULL;\r | |
657 | \r | |
658 | DEBUG ((DEBUG_BLKIO, "MMCInitialize()\n"));\r | |
659 | \r | |
660 | Status = gBS->LocateProtocol (&gEmbeddedExternalDeviceProtocolGuid, NULL, (VOID **)&gTPS65950);\r | |
661 | ASSERT_EFI_ERROR(Status);\r | |
662 | \r | |
663 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
3402aac7 | 664 | &Handle,\r |
1e57a462 | 665 | &gEfiMmcHostProtocolGuid, &gMMCHost,\r |
666 | NULL\r | |
667 | );\r | |
668 | ASSERT_EFI_ERROR (Status);\r | |
669 | \r | |
670 | return Status;\r | |
671 | }\r |