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48555339 FT |
1 | /** @file\r |
2 | This file provides some helper functions which are specific for EMMC device.\r | |
3 | \r | |
b5547b9c | 4 | Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.\r |
8c983d3e | 5 | Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>\r |
9d510e61 | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
48555339 FT |
7 | \r |
8 | **/\r | |
9 | \r | |
10 | #include "SdMmcPciHcDxe.h"\r | |
11 | \r | |
12 | /**\r | |
13 | Send command GO_IDLE_STATE (CMD0 with argument of 0x00000000) to the device to\r | |
14 | make it go to Idle State.\r | |
15 | \r | |
16 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.\r | |
17 | \r | |
18 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
19 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
20 | \r | |
21 | @retval EFI_SUCCESS The EMMC device is reset correctly.\r | |
22 | @retval Others The device reset fails.\r | |
23 | \r | |
24 | **/\r | |
25 | EFI_STATUS\r | |
26 | EmmcReset (\r | |
27 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
28 | IN UINT8 Slot\r | |
29 | )\r | |
30 | {\r | |
31 | EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;\r | |
32 | EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;\r | |
33 | EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;\r | |
34 | EFI_STATUS Status;\r | |
35 | \r | |
36 | ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));\r | |
37 | ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));\r | |
38 | ZeroMem (&Packet, sizeof (Packet));\r | |
39 | \r | |
40 | Packet.SdMmcCmdBlk = &SdMmcCmdBlk;\r | |
41 | Packet.SdMmcStatusBlk = &SdMmcStatusBlk;\r | |
42 | Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;\r | |
43 | \r | |
44 | SdMmcCmdBlk.CommandIndex = EMMC_GO_IDLE_STATE;\r | |
45 | SdMmcCmdBlk.CommandType = SdMmcCommandTypeBc;\r | |
46 | SdMmcCmdBlk.ResponseType = 0;\r | |
47 | SdMmcCmdBlk.CommandArgument = 0;\r | |
48 | \r | |
9252d67a JZ |
49 | gBS->Stall (1000);\r |
50 | \r | |
48555339 FT |
51 | Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);\r |
52 | \r | |
53 | return Status;\r | |
54 | }\r | |
55 | \r | |
56 | /**\r | |
57 | Send command SEND_OP_COND to the EMMC device to get the data of the OCR register.\r | |
58 | \r | |
59 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.\r | |
60 | \r | |
61 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
62 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
63 | @param[in, out] Argument On input, the argument of SEND_OP_COND is to send to the device.\r | |
64 | On output, the argument is the value of OCR register.\r | |
65 | \r | |
66 | @retval EFI_SUCCESS The operation is done correctly.\r | |
67 | @retval Others The operation fails.\r | |
68 | \r | |
69 | **/\r | |
70 | EFI_STATUS\r | |
71 | EmmcGetOcr (\r | |
72 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
73 | IN UINT8 Slot,\r | |
74 | IN OUT UINT32 *Argument\r | |
75 | )\r | |
76 | {\r | |
77 | EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;\r | |
78 | EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;\r | |
79 | EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;\r | |
80 | EFI_STATUS Status;\r | |
81 | \r | |
82 | ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));\r | |
83 | ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));\r | |
84 | ZeroMem (&Packet, sizeof (Packet));\r | |
85 | \r | |
86 | Packet.SdMmcCmdBlk = &SdMmcCmdBlk;\r | |
87 | Packet.SdMmcStatusBlk = &SdMmcStatusBlk;\r | |
88 | Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;\r | |
89 | \r | |
90 | SdMmcCmdBlk.CommandIndex = EMMC_SEND_OP_COND;\r | |
91 | SdMmcCmdBlk.CommandType = SdMmcCommandTypeBcr;\r | |
92 | SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR3;\r | |
93 | SdMmcCmdBlk.CommandArgument = *Argument;\r | |
94 | \r | |
95 | Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);\r | |
96 | if (!EFI_ERROR (Status)) {\r | |
97 | //\r | |
98 | // For details, refer to SD Host Controller Simplified Spec 3.0 Table 2-12.\r | |
99 | //\r | |
100 | *Argument = SdMmcStatusBlk.Resp0;\r | |
101 | }\r | |
102 | \r | |
103 | return Status;\r | |
104 | }\r | |
105 | \r | |
106 | /**\r | |
107 | Broadcast command ALL_SEND_CID to the bus to ask all the EMMC devices to send the\r | |
108 | data of their CID registers.\r | |
109 | \r | |
110 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.\r | |
111 | \r | |
112 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
113 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
114 | \r | |
115 | @retval EFI_SUCCESS The operation is done correctly.\r | |
116 | @retval Others The operation fails.\r | |
117 | \r | |
118 | **/\r | |
119 | EFI_STATUS\r | |
120 | EmmcGetAllCid (\r | |
121 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
122 | IN UINT8 Slot\r | |
123 | )\r | |
124 | {\r | |
125 | EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;\r | |
126 | EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;\r | |
127 | EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;\r | |
128 | EFI_STATUS Status;\r | |
129 | \r | |
130 | ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));\r | |
131 | ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));\r | |
132 | ZeroMem (&Packet, sizeof (Packet));\r | |
133 | \r | |
134 | Packet.SdMmcCmdBlk = &SdMmcCmdBlk;\r | |
135 | Packet.SdMmcStatusBlk = &SdMmcStatusBlk;\r | |
136 | Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;\r | |
137 | \r | |
138 | SdMmcCmdBlk.CommandIndex = EMMC_ALL_SEND_CID;\r | |
139 | SdMmcCmdBlk.CommandType = SdMmcCommandTypeBcr;\r | |
140 | SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR2;\r | |
141 | SdMmcCmdBlk.CommandArgument = 0;\r | |
142 | \r | |
143 | Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);\r | |
144 | \r | |
145 | return Status;\r | |
146 | }\r | |
147 | \r | |
148 | /**\r | |
149 | Send command SET_RELATIVE_ADDR to the EMMC device to assign a Relative device\r | |
150 | Address (RCA).\r | |
151 | \r | |
152 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.\r | |
153 | \r | |
154 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
155 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
156 | @param[in] Rca The relative device address to be assigned.\r | |
157 | \r | |
158 | @retval EFI_SUCCESS The operation is done correctly.\r | |
159 | @retval Others The operation fails.\r | |
160 | \r | |
161 | **/\r | |
162 | EFI_STATUS\r | |
163 | EmmcSetRca (\r | |
164 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
165 | IN UINT8 Slot,\r | |
166 | IN UINT16 Rca\r | |
167 | )\r | |
168 | {\r | |
169 | EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;\r | |
170 | EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;\r | |
171 | EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;\r | |
172 | EFI_STATUS Status;\r | |
173 | \r | |
174 | ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));\r | |
175 | ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));\r | |
176 | ZeroMem (&Packet, sizeof (Packet));\r | |
177 | \r | |
178 | Packet.SdMmcCmdBlk = &SdMmcCmdBlk;\r | |
179 | Packet.SdMmcStatusBlk = &SdMmcStatusBlk;\r | |
180 | Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;\r | |
181 | \r | |
182 | SdMmcCmdBlk.CommandIndex = EMMC_SET_RELATIVE_ADDR;\r | |
183 | SdMmcCmdBlk.CommandType = SdMmcCommandTypeAc;\r | |
184 | SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;\r | |
185 | SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;\r | |
186 | \r | |
187 | Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);\r | |
188 | \r | |
189 | return Status;\r | |
190 | }\r | |
191 | \r | |
192 | /**\r | |
193 | Send command SEND_CSD to the EMMC device to get the data of the CSD register.\r | |
194 | \r | |
195 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.\r | |
196 | \r | |
197 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
198 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
199 | @param[in] Rca The relative device address of selected device.\r | |
200 | @param[out] Csd The buffer to store the content of the CSD register.\r | |
201 | Note the caller should ignore the lowest byte of this\r | |
202 | buffer as the content of this byte is meaningless even\r | |
203 | if the operation succeeds.\r | |
204 | \r | |
205 | @retval EFI_SUCCESS The operation is done correctly.\r | |
206 | @retval Others The operation fails.\r | |
207 | \r | |
208 | **/\r | |
209 | EFI_STATUS\r | |
210 | EmmcGetCsd (\r | |
211 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
212 | IN UINT8 Slot,\r | |
213 | IN UINT16 Rca,\r | |
214 | OUT EMMC_CSD *Csd\r | |
215 | )\r | |
216 | {\r | |
217 | EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;\r | |
218 | EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;\r | |
219 | EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;\r | |
220 | EFI_STATUS Status;\r | |
221 | \r | |
222 | ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));\r | |
223 | ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));\r | |
224 | ZeroMem (&Packet, sizeof (Packet));\r | |
225 | \r | |
226 | Packet.SdMmcCmdBlk = &SdMmcCmdBlk;\r | |
227 | Packet.SdMmcStatusBlk = &SdMmcStatusBlk;\r | |
228 | Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;\r | |
229 | \r | |
230 | SdMmcCmdBlk.CommandIndex = EMMC_SEND_CSD;\r | |
231 | SdMmcCmdBlk.CommandType = SdMmcCommandTypeAc;\r | |
232 | SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR2;\r | |
233 | SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;\r | |
234 | \r | |
235 | Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);\r | |
236 | if (!EFI_ERROR (Status)) {\r | |
237 | //\r | |
238 | // For details, refer to SD Host Controller Simplified Spec 3.0 Table 2-12.\r | |
239 | //\r | |
240 | CopyMem (((UINT8*)Csd) + 1, &SdMmcStatusBlk.Resp0, sizeof (EMMC_CSD) - 1);\r | |
241 | }\r | |
242 | \r | |
243 | return Status;\r | |
244 | }\r | |
245 | \r | |
246 | /**\r | |
247 | Send command SELECT_DESELECT_CARD to the EMMC device to select/deselect it.\r | |
248 | \r | |
249 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.\r | |
250 | \r | |
251 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
252 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
253 | @param[in] Rca The relative device address of selected device.\r | |
254 | \r | |
255 | @retval EFI_SUCCESS The operation is done correctly.\r | |
256 | @retval Others The operation fails.\r | |
257 | \r | |
258 | **/\r | |
259 | EFI_STATUS\r | |
260 | EmmcSelect (\r | |
261 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
262 | IN UINT8 Slot,\r | |
263 | IN UINT16 Rca\r | |
264 | )\r | |
265 | {\r | |
266 | EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;\r | |
267 | EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;\r | |
268 | EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;\r | |
269 | EFI_STATUS Status;\r | |
270 | \r | |
271 | ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));\r | |
272 | ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));\r | |
273 | ZeroMem (&Packet, sizeof (Packet));\r | |
274 | \r | |
275 | Packet.SdMmcCmdBlk = &SdMmcCmdBlk;\r | |
276 | Packet.SdMmcStatusBlk = &SdMmcStatusBlk;\r | |
277 | Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;\r | |
278 | \r | |
279 | SdMmcCmdBlk.CommandIndex = EMMC_SELECT_DESELECT_CARD;\r | |
280 | SdMmcCmdBlk.CommandType = SdMmcCommandTypeAc;\r | |
281 | SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;\r | |
282 | SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;\r | |
283 | \r | |
284 | Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);\r | |
285 | \r | |
286 | return Status;\r | |
287 | }\r | |
288 | \r | |
289 | /**\r | |
290 | Send command SEND_EXT_CSD to the EMMC device to get the data of the EXT_CSD register.\r | |
291 | \r | |
292 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.\r | |
293 | \r | |
294 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
295 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
296 | @param[out] ExtCsd The buffer to store the content of the EXT_CSD register.\r | |
297 | \r | |
298 | @retval EFI_SUCCESS The operation is done correctly.\r | |
299 | @retval Others The operation fails.\r | |
300 | \r | |
301 | **/\r | |
302 | EFI_STATUS\r | |
303 | EmmcGetExtCsd (\r | |
304 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
305 | IN UINT8 Slot,\r | |
306 | OUT EMMC_EXT_CSD *ExtCsd\r | |
307 | )\r | |
308 | {\r | |
309 | EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;\r | |
310 | EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;\r | |
311 | EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;\r | |
312 | EFI_STATUS Status;\r | |
313 | \r | |
314 | ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));\r | |
315 | ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));\r | |
316 | ZeroMem (&Packet, sizeof (Packet));\r | |
317 | \r | |
318 | Packet.SdMmcCmdBlk = &SdMmcCmdBlk;\r | |
319 | Packet.SdMmcStatusBlk = &SdMmcStatusBlk;\r | |
320 | Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;\r | |
321 | \r | |
322 | SdMmcCmdBlk.CommandIndex = EMMC_SEND_EXT_CSD;\r | |
323 | SdMmcCmdBlk.CommandType = SdMmcCommandTypeAdtc;\r | |
324 | SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;\r | |
325 | SdMmcCmdBlk.CommandArgument = 0x00000000;\r | |
326 | \r | |
327 | Packet.InDataBuffer = ExtCsd;\r | |
328 | Packet.InTransferLength = sizeof (EMMC_EXT_CSD);\r | |
329 | \r | |
330 | Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);\r | |
331 | return Status;\r | |
332 | }\r | |
333 | \r | |
334 | /**\r | |
335 | Send command SWITCH to the EMMC device to switch the mode of operation of the\r | |
336 | selected Device or modifies the EXT_CSD registers.\r | |
337 | \r | |
338 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.\r | |
339 | \r | |
340 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
341 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
342 | @param[in] Access The access mode of SWTICH command.\r | |
343 | @param[in] Index The offset of the field to be access.\r | |
344 | @param[in] Value The value to be set to the specified field of EXT_CSD register.\r | |
345 | @param[in] CmdSet The value of CmdSet field of EXT_CSD register.\r | |
346 | \r | |
347 | @retval EFI_SUCCESS The operation is done correctly.\r | |
348 | @retval Others The operation fails.\r | |
349 | \r | |
350 | **/\r | |
351 | EFI_STATUS\r | |
352 | EmmcSwitch (\r | |
353 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
354 | IN UINT8 Slot,\r | |
355 | IN UINT8 Access,\r | |
356 | IN UINT8 Index,\r | |
357 | IN UINT8 Value,\r | |
358 | IN UINT8 CmdSet\r | |
359 | )\r | |
360 | {\r | |
361 | EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;\r | |
362 | EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;\r | |
363 | EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;\r | |
364 | EFI_STATUS Status;\r | |
365 | \r | |
366 | ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));\r | |
367 | ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));\r | |
368 | ZeroMem (&Packet, sizeof (Packet));\r | |
369 | \r | |
370 | Packet.SdMmcCmdBlk = &SdMmcCmdBlk;\r | |
371 | Packet.SdMmcStatusBlk = &SdMmcStatusBlk;\r | |
372 | Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;\r | |
373 | \r | |
374 | SdMmcCmdBlk.CommandIndex = EMMC_SWITCH;\r | |
375 | SdMmcCmdBlk.CommandType = SdMmcCommandTypeAc;\r | |
376 | SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1b;\r | |
377 | SdMmcCmdBlk.CommandArgument = (Access << 24) | (Index << 16) | (Value << 8) | CmdSet;\r | |
378 | \r | |
379 | Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);\r | |
380 | \r | |
381 | return Status;\r | |
382 | }\r | |
383 | \r | |
384 | /**\r | |
385 | Send command SEND_STATUS to the addressed EMMC device to get its status register.\r | |
386 | \r | |
387 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.10.4 for details.\r | |
388 | \r | |
389 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
390 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
391 | @param[in] Rca The relative device address of addressed device.\r | |
392 | @param[out] DevStatus The returned device status.\r | |
393 | \r | |
394 | @retval EFI_SUCCESS The operation is done correctly.\r | |
395 | @retval Others The operation fails.\r | |
396 | \r | |
397 | **/\r | |
398 | EFI_STATUS\r | |
399 | EmmcSendStatus (\r | |
400 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
401 | IN UINT8 Slot,\r | |
402 | IN UINT16 Rca,\r | |
403 | OUT UINT32 *DevStatus\r | |
404 | )\r | |
405 | {\r | |
406 | EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;\r | |
407 | EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;\r | |
408 | EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;\r | |
409 | EFI_STATUS Status;\r | |
410 | \r | |
411 | ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));\r | |
412 | ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));\r | |
413 | ZeroMem (&Packet, sizeof (Packet));\r | |
414 | \r | |
415 | Packet.SdMmcCmdBlk = &SdMmcCmdBlk;\r | |
416 | Packet.SdMmcStatusBlk = &SdMmcStatusBlk;\r | |
417 | Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;\r | |
418 | \r | |
419 | SdMmcCmdBlk.CommandIndex = EMMC_SEND_STATUS;\r | |
420 | SdMmcCmdBlk.CommandType = SdMmcCommandTypeAc;\r | |
421 | SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;\r | |
422 | SdMmcCmdBlk.CommandArgument = (UINT32)Rca << 16;\r | |
423 | \r | |
424 | Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);\r | |
425 | if (!EFI_ERROR (Status)) {\r | |
426 | *DevStatus = SdMmcStatusBlk.Resp0;\r | |
427 | }\r | |
428 | \r | |
429 | return Status;\r | |
430 | }\r | |
431 | \r | |
432 | /**\r | |
433 | Send command SEND_TUNING_BLOCK to the EMMC device for HS200 optimal sampling point\r | |
434 | detection.\r | |
435 | \r | |
436 | It may be sent up to 40 times until the host finishes the tuning procedure.\r | |
437 | \r | |
438 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 for details.\r | |
439 | \r | |
440 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
441 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
442 | @param[in] BusWidth The bus width to work.\r | |
443 | \r | |
444 | @retval EFI_SUCCESS The operation is done correctly.\r | |
445 | @retval Others The operation fails.\r | |
446 | \r | |
447 | **/\r | |
448 | EFI_STATUS\r | |
449 | EmmcSendTuningBlk (\r | |
450 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
451 | IN UINT8 Slot,\r | |
452 | IN UINT8 BusWidth\r | |
453 | )\r | |
454 | {\r | |
455 | EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;\r | |
456 | EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;\r | |
457 | EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;\r | |
458 | EFI_STATUS Status;\r | |
459 | UINT8 TuningBlock[128];\r | |
460 | \r | |
461 | ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));\r | |
462 | ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));\r | |
463 | ZeroMem (&Packet, sizeof (Packet));\r | |
464 | \r | |
465 | Packet.SdMmcCmdBlk = &SdMmcCmdBlk;\r | |
466 | Packet.SdMmcStatusBlk = &SdMmcStatusBlk;\r | |
467 | Packet.Timeout = SD_MMC_HC_GENERIC_TIMEOUT;\r | |
468 | \r | |
469 | SdMmcCmdBlk.CommandIndex = EMMC_SEND_TUNING_BLOCK;\r | |
470 | SdMmcCmdBlk.CommandType = SdMmcCommandTypeAdtc;\r | |
471 | SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR1;\r | |
472 | SdMmcCmdBlk.CommandArgument = 0;\r | |
473 | \r | |
474 | Packet.InDataBuffer = TuningBlock;\r | |
475 | if (BusWidth == 8) {\r | |
476 | Packet.InTransferLength = sizeof (TuningBlock);\r | |
477 | } else {\r | |
478 | Packet.InTransferLength = 64;\r | |
479 | }\r | |
480 | \r | |
481 | Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);\r | |
482 | \r | |
483 | return Status;\r | |
484 | }\r | |
485 | \r | |
486 | /**\r | |
487 | Tunning the clock to get HS200 optimal sampling point.\r | |
488 | \r | |
489 | Command SEND_TUNING_BLOCK may be sent up to 40 times until the host finishes the\r | |
490 | tuning procedure.\r | |
491 | \r | |
492 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller\r | |
493 | Simplified Spec 3.0 Figure 2-29 for details.\r | |
494 | \r | |
495 | @param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.\r | |
496 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
497 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
498 | @param[in] BusWidth The bus width to work.\r | |
499 | \r | |
500 | @retval EFI_SUCCESS The operation is done correctly.\r | |
501 | @retval Others The operation fails.\r | |
502 | \r | |
503 | **/\r | |
504 | EFI_STATUS\r | |
505 | EmmcTuningClkForHs200 (\r | |
506 | IN EFI_PCI_IO_PROTOCOL *PciIo,\r | |
507 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
508 | IN UINT8 Slot,\r | |
509 | IN UINT8 BusWidth\r | |
510 | )\r | |
511 | {\r | |
512 | EFI_STATUS Status;\r | |
513 | UINT8 HostCtrl2;\r | |
514 | UINT8 Retry;\r | |
515 | \r | |
516 | //\r | |
517 | // Notify the host that the sampling clock tuning procedure starts.\r | |
518 | //\r | |
519 | HostCtrl2 = BIT6;\r | |
520 | Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);\r | |
521 | if (EFI_ERROR (Status)) {\r | |
522 | return Status;\r | |
523 | }\r | |
524 | //\r | |
525 | // Ask the device to send a sequence of tuning blocks till the tuning procedure is done.\r | |
526 | //\r | |
527 | Retry = 0;\r | |
528 | do {\r | |
529 | Status = EmmcSendTuningBlk (PassThru, Slot, BusWidth);\r | |
530 | if (EFI_ERROR (Status)) {\r | |
e27ccaba | 531 | DEBUG ((DEBUG_ERROR, "EmmcTuningClkForHs200: Send tuning block fails with %r\n", Status));\r |
48555339 FT |
532 | return Status;\r |
533 | }\r | |
534 | \r | |
535 | Status = SdMmcHcRwMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, TRUE, sizeof (HostCtrl2), &HostCtrl2);\r | |
536 | if (EFI_ERROR (Status)) {\r | |
537 | return Status;\r | |
538 | }\r | |
539 | \r | |
8c983d3e | 540 | if ((HostCtrl2 & (BIT6 | BIT7)) == 0) {\r |
48555339 FT |
541 | break;\r |
542 | }\r | |
8c983d3e FT |
543 | \r |
544 | if ((HostCtrl2 & (BIT6 | BIT7)) == BIT7) {\r | |
545 | return EFI_SUCCESS;\r | |
546 | }\r | |
48555339 FT |
547 | } while (++Retry < 40);\r |
548 | \r | |
e27ccaba | 549 | DEBUG ((DEBUG_ERROR, "EmmcTuningClkForHs200: Send tuning block fails at %d times with HostCtrl2 %02x\n", Retry, HostCtrl2));\r |
8c983d3e FT |
550 | //\r |
551 | // Abort the tuning procedure and reset the tuning circuit.\r | |
552 | //\r | |
553 | HostCtrl2 = (UINT8)~(BIT6 | BIT7);\r | |
554 | Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL2, sizeof (HostCtrl2), &HostCtrl2);\r | |
555 | if (EFI_ERROR (Status)) {\r | |
556 | return Status;\r | |
48555339 | 557 | }\r |
8c983d3e | 558 | return EFI_DEVICE_ERROR;\r |
48555339 FT |
559 | }\r |
560 | \r | |
64362314 AM |
561 | /**\r |
562 | Check the SWITCH operation status.\r | |
563 | \r | |
564 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
565 | @param[in] Slot The slot number on which command should be sent.\r | |
566 | @param[in] Rca The relative device address.\r | |
567 | \r | |
568 | @retval EFI_SUCCESS The SWITCH finished siccessfully.\r | |
569 | @retval others The SWITCH failed.\r | |
570 | **/\r | |
571 | EFI_STATUS\r | |
572 | EmmcCheckSwitchStatus (\r | |
573 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
574 | IN UINT8 Slot,\r | |
575 | IN UINT16 Rca\r | |
576 | )\r | |
577 | {\r | |
578 | EFI_STATUS Status;\r | |
579 | UINT32 DevStatus;\r | |
580 | \r | |
581 | Status = EmmcSendStatus (PassThru, Slot, Rca, &DevStatus);\r | |
582 | if (EFI_ERROR (Status)) {\r | |
583 | DEBUG ((DEBUG_ERROR, "EmmcCheckSwitchStatus: Send status fails with %r\n", Status));\r | |
584 | return Status;\r | |
585 | }\r | |
586 | \r | |
587 | //\r | |
588 | // Check the switch operation is really successful or not.\r | |
589 | //\r | |
590 | if ((DevStatus & BIT7) != 0) {\r | |
591 | DEBUG ((DEBUG_ERROR, "EmmcCheckSwitchStatus: The switch operation fails as DevStatus is 0x%08x\n", DevStatus));\r | |
592 | return EFI_DEVICE_ERROR;\r | |
593 | }\r | |
594 | \r | |
595 | return EFI_SUCCESS;\r | |
596 | }\r | |
597 | \r | |
48555339 FT |
598 | /**\r |
599 | Switch the bus width to specified width.\r | |
600 | \r | |
601 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.9 and SD Host Controller\r | |
602 | Simplified Spec 3.0 Figure 3-7 for details.\r | |
603 | \r | |
604 | @param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.\r | |
605 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
606 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
607 | @param[in] Rca The relative device address to be assigned.\r | |
608 | @param[in] IsDdr If TRUE, use dual data rate data simpling method. Otherwise\r | |
609 | use single data rate data simpling method.\r | |
610 | @param[in] BusWidth The bus width to be set, it could be 4 or 8.\r | |
611 | \r | |
612 | @retval EFI_SUCCESS The operation is done correctly.\r | |
613 | @retval Others The operation fails.\r | |
614 | \r | |
615 | **/\r | |
616 | EFI_STATUS\r | |
617 | EmmcSwitchBusWidth (\r | |
618 | IN EFI_PCI_IO_PROTOCOL *PciIo,\r | |
619 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
620 | IN UINT8 Slot,\r | |
621 | IN UINT16 Rca,\r | |
622 | IN BOOLEAN IsDdr,\r | |
623 | IN UINT8 BusWidth\r | |
624 | )\r | |
625 | {\r | |
626 | EFI_STATUS Status;\r | |
627 | UINT8 Access;\r | |
628 | UINT8 Index;\r | |
629 | UINT8 Value;\r | |
630 | UINT8 CmdSet;\r | |
48555339 FT |
631 | \r |
632 | //\r | |
633 | // Write Byte, the Value field is written into the byte pointed by Index.\r | |
634 | //\r | |
635 | Access = 0x03;\r | |
636 | Index = OFFSET_OF (EMMC_EXT_CSD, BusWidth);\r | |
637 | if (BusWidth == 4) {\r | |
638 | Value = 1;\r | |
639 | } else if (BusWidth == 8) {\r | |
640 | Value = 2;\r | |
641 | } else {\r | |
642 | return EFI_INVALID_PARAMETER;\r | |
643 | }\r | |
644 | \r | |
645 | if (IsDdr) {\r | |
646 | Value += 4;\r | |
647 | }\r | |
648 | \r | |
649 | CmdSet = 0;\r | |
650 | Status = EmmcSwitch (PassThru, Slot, Access, Index, Value, CmdSet);\r | |
651 | if (EFI_ERROR (Status)) {\r | |
e27ccaba | 652 | DEBUG ((DEBUG_ERROR, "EmmcSwitchBusWidth: Switch to bus width %d fails with %r\n", BusWidth, Status));\r |
48555339 FT |
653 | return Status;\r |
654 | }\r | |
655 | \r | |
64362314 | 656 | Status = EmmcCheckSwitchStatus (PassThru, Slot, Rca);\r |
48555339 | 657 | if (EFI_ERROR (Status)) {\r |
48555339 FT |
658 | return Status;\r |
659 | }\r | |
48555339 FT |
660 | \r |
661 | Status = SdMmcHcSetBusWidth (PciIo, Slot, BusWidth);\r | |
662 | \r | |
663 | return Status;\r | |
664 | }\r | |
665 | \r | |
666 | /**\r | |
195f673f | 667 | Switch the bus timing and clock frequency.\r |
48555339 FT |
668 | \r |
669 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.6 and SD Host Controller\r | |
670 | Simplified Spec 3.0 Figure 3-3 for details.\r | |
671 | \r | |
adec1f5d AM |
672 | @param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.\r |
673 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
674 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
675 | @param[in] Rca The relative device address to be assigned.\r | |
676 | @param[in] DriverStrength Driver strength to set for speed modes that support it.\r | |
677 | @param[in] BusTiming The bus mode timing indicator.\r | |
678 | @param[in] ClockFreq The max clock frequency to be set, the unit is MHz.\r | |
48555339 FT |
679 | \r |
680 | @retval EFI_SUCCESS The operation is done correctly.\r | |
681 | @retval Others The operation fails.\r | |
682 | \r | |
683 | **/\r | |
684 | EFI_STATUS\r | |
195f673f | 685 | EmmcSwitchBusTiming (\r |
48555339 FT |
686 | IN EFI_PCI_IO_PROTOCOL *PciIo,\r |
687 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
688 | IN UINT8 Slot,\r | |
689 | IN UINT16 Rca,\r | |
adec1f5d AM |
690 | IN EDKII_SD_MMC_DRIVER_STRENGTH DriverStrength,\r |
691 | IN SD_MMC_BUS_MODE BusTiming,\r | |
48555339 FT |
692 | IN UINT32 ClockFreq\r |
693 | )\r | |
694 | {\r | |
695 | EFI_STATUS Status;\r | |
696 | UINT8 Access;\r | |
697 | UINT8 Index;\r | |
698 | UINT8 Value;\r | |
699 | UINT8 CmdSet;\r | |
48555339 | 700 | SD_MMC_HC_PRIVATE_DATA *Private;\r |
a8c1fc70 | 701 | UINT8 HostCtrl1;\r |
64362314 | 702 | BOOLEAN DelaySendStatus;\r |
48555339 FT |
703 | \r |
704 | Private = SD_MMC_HC_PRIVATE_FROM_THIS (PassThru);\r | |
705 | //\r | |
706 | // Write Byte, the Value field is written into the byte pointed by Index.\r | |
707 | //\r | |
708 | Access = 0x03;\r | |
709 | Index = OFFSET_OF (EMMC_EXT_CSD, HsTiming);\r | |
48555339 | 710 | CmdSet = 0;\r |
adec1f5d AM |
711 | switch (BusTiming) {\r |
712 | case SdMmcMmcHs400:\r | |
713 | Value = (UINT8)((DriverStrength.Emmc << 4) | 3);\r | |
714 | break;\r | |
715 | case SdMmcMmcHs200:\r | |
716 | Value = (UINT8)((DriverStrength.Emmc << 4) | 2);\r | |
717 | break;\r | |
718 | case SdMmcMmcHsSdr:\r | |
719 | case SdMmcMmcHsDdr:\r | |
720 | Value = 1;\r | |
721 | break;\r | |
722 | case SdMmcMmcLegacy:\r | |
723 | Value = 0;\r | |
724 | break;\r | |
725 | default:\r | |
64362314 | 726 | DEBUG ((DEBUG_ERROR, "EmmcSwitchBusTiming: Unsupported BusTiming(%d)\n", BusTiming));\r |
adec1f5d AM |
727 | return EFI_INVALID_PARAMETER;\r |
728 | }\r | |
48555339 FT |
729 | \r |
730 | Status = EmmcSwitch (PassThru, Slot, Access, Index, Value, CmdSet);\r | |
731 | if (EFI_ERROR (Status)) {\r | |
adec1f5d | 732 | DEBUG ((DEBUG_ERROR, "EmmcSwitchBusTiming: Switch to bus timing %d fails with %r\n", BusTiming, Status));\r |
195f673f AM |
733 | return Status;\r |
734 | }\r | |
735 | \r | |
a8c1fc70 AM |
736 | if (BusTiming == SdMmcMmcHsSdr || BusTiming == SdMmcMmcHsDdr) {\r |
737 | HostCtrl1 = BIT2;\r | |
738 | Status = SdMmcHcOrMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL1, sizeof (HostCtrl1), &HostCtrl1);\r | |
739 | if (EFI_ERROR (Status)) {\r | |
740 | return Status;\r | |
741 | }\r | |
742 | } else {\r | |
743 | HostCtrl1 = (UINT8)~BIT2;\r | |
744 | Status = SdMmcHcAndMmio (PciIo, Slot, SD_MMC_HC_HOST_CTRL1, sizeof (HostCtrl1), &HostCtrl1);\r | |
745 | if (EFI_ERROR (Status)) {\r | |
746 | return Status;\r | |
747 | }\r | |
748 | }\r | |
749 | \r | |
750 | Status = SdMmcHcUhsSignaling (Private->ControllerHandle, PciIo, Slot, BusTiming);\r | |
751 | if (EFI_ERROR (Status)) {\r | |
752 | return Status;\r | |
753 | }\r | |
754 | \r | |
64362314 AM |
755 | //\r |
756 | // For cases when we switch bus timing to higher mode from current we want to\r | |
757 | // send SEND_STATUS at current, lower, frequency then the target frequency to avoid\r | |
758 | // stability issues. It has been observed that some designs are unable to process the\r | |
759 | // SEND_STATUS at higher frequency during switch to HS200 @200MHz irrespective of the number of retries\r | |
760 | // and only running the clock tuning is able to make them work at target frequency.\r | |
761 | //\r | |
762 | // For cases when we are downgrading the frequency and current high frequency is invalid\r | |
763 | // we have to first change the frequency to target frequency and then send the SEND_STATUS.\r | |
764 | //\r | |
765 | if (Private->Slot[Slot].CurrentFreq < (ClockFreq * 1000)) {\r | |
766 | Status = EmmcCheckSwitchStatus (PassThru, Slot, Rca);\r | |
767 | if (EFI_ERROR (Status)) {\r | |
768 | return Status;\r | |
769 | }\r | |
770 | DelaySendStatus = FALSE;\r | |
771 | } else {\r | |
772 | DelaySendStatus = TRUE;\r | |
773 | }\r | |
774 | \r | |
195f673f AM |
775 | //\r |
776 | // Convert the clock freq unit from MHz to KHz.\r | |
777 | //\r | |
49accded | 778 | Status = SdMmcHcClockSupply (Private, Slot, BusTiming, FALSE, ClockFreq * 1000);\r |
195f673f | 779 | if (EFI_ERROR (Status)) {\r |
48555339 FT |
780 | return Status;\r |
781 | }\r | |
782 | \r | |
64362314 AM |
783 | if (DelaySendStatus) {\r |
784 | Status = EmmcCheckSwitchStatus (PassThru, Slot, Rca);\r | |
785 | if (EFI_ERROR (Status)) {\r | |
786 | return Status;\r | |
787 | }\r | |
48555339 | 788 | }\r |
b7b803a6 | 789 | \r |
48555339 FT |
790 | return Status;\r |
791 | }\r | |
792 | \r | |
793 | /**\r | |
794 | Switch to the High Speed timing according to request.\r | |
795 | \r | |
796 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller\r | |
797 | Simplified Spec 3.0 Figure 2-29 for details.\r | |
798 | \r | |
799 | @param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.\r | |
800 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
801 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
802 | @param[in] Rca The relative device address to be assigned.\r | |
adec1f5d | 803 | @param[in] BusMode Pointer to SD_MMC_BUS_SETTINGS structure containing bus settings.\r |
48555339 FT |
804 | \r |
805 | @retval EFI_SUCCESS The operation is done correctly.\r | |
806 | @retval Others The operation fails.\r | |
807 | \r | |
808 | **/\r | |
809 | EFI_STATUS\r | |
810 | EmmcSwitchToHighSpeed (\r | |
811 | IN EFI_PCI_IO_PROTOCOL *PciIo,\r | |
812 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
813 | IN UINT8 Slot,\r | |
814 | IN UINT16 Rca,\r | |
adec1f5d | 815 | IN SD_MMC_BUS_SETTINGS *BusMode\r |
48555339 FT |
816 | )\r |
817 | {\r | |
a8c1fc70 AM |
818 | EFI_STATUS Status;\r |
819 | BOOLEAN IsDdr;\r | |
48555339 | 820 | \r |
76e1e563 | 821 | if ((BusMode->BusTiming != SdMmcMmcHsSdr && BusMode->BusTiming != SdMmcMmcHsDdr && BusMode->BusTiming != SdMmcMmcLegacy) ||\r |
adec1f5d AM |
822 | BusMode->ClockFreq > 52) {\r |
823 | return EFI_INVALID_PARAMETER;\r | |
824 | }\r | |
825 | \r | |
826 | if (BusMode->BusTiming == SdMmcMmcHsDdr) {\r | |
827 | IsDdr = TRUE;\r | |
828 | } else {\r | |
829 | IsDdr = FALSE;\r | |
830 | }\r | |
831 | \r | |
832 | Status = EmmcSwitchBusWidth (PciIo, PassThru, Slot, Rca, IsDdr, BusMode->BusWidth);\r | |
48555339 FT |
833 | if (EFI_ERROR (Status)) {\r |
834 | return Status;\r | |
835 | }\r | |
adec1f5d | 836 | \r |
adec1f5d | 837 | return EmmcSwitchBusTiming (PciIo, PassThru, Slot, Rca, BusMode->DriverStrength, BusMode->BusTiming, BusMode->ClockFreq);\r |
48555339 FT |
838 | }\r |
839 | \r | |
840 | /**\r | |
adec1f5d | 841 | Switch to the HS200 timing. This function assumes that eMMC bus is still in legacy mode.\r |
48555339 FT |
842 | \r |
843 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller\r | |
844 | Simplified Spec 3.0 Figure 2-29 for details.\r | |
845 | \r | |
adec1f5d AM |
846 | @param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.\r |
847 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
848 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
849 | @param[in] Rca The relative device address to be assigned.\r | |
850 | @param[in] BusMode Pointer to SD_MMC_BUS_SETTINGS structure containing bus settings.\r | |
48555339 FT |
851 | \r |
852 | @retval EFI_SUCCESS The operation is done correctly.\r | |
853 | @retval Others The operation fails.\r | |
854 | \r | |
855 | **/\r | |
856 | EFI_STATUS\r | |
857 | EmmcSwitchToHS200 (\r | |
858 | IN EFI_PCI_IO_PROTOCOL *PciIo,\r | |
859 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
860 | IN UINT8 Slot,\r | |
861 | IN UINT16 Rca,\r | |
adec1f5d | 862 | IN SD_MMC_BUS_SETTINGS *BusMode\r |
48555339 FT |
863 | )\r |
864 | {\r | |
a8c1fc70 | 865 | EFI_STATUS Status;\r |
48555339 | 866 | \r |
adec1f5d AM |
867 | if (BusMode->BusTiming != SdMmcMmcHs200 ||\r |
868 | (BusMode->BusWidth != 4 && BusMode->BusWidth != 8)) {\r | |
48555339 FT |
869 | return EFI_INVALID_PARAMETER;\r |
870 | }\r | |
871 | \r | |
adec1f5d | 872 | Status = EmmcSwitchBusWidth (PciIo, PassThru, Slot, Rca, FALSE, BusMode->BusWidth);\r |
48555339 FT |
873 | if (EFI_ERROR (Status)) {\r |
874 | return Status;\r | |
875 | }\r | |
a4708009 | 876 | \r |
adec1f5d | 877 | Status = EmmcSwitchBusTiming (PciIo, PassThru, Slot, Rca, BusMode->DriverStrength, BusMode->BusTiming, BusMode->ClockFreq);\r |
48555339 FT |
878 | if (EFI_ERROR (Status)) {\r |
879 | return Status;\r | |
880 | }\r | |
881 | \r | |
adec1f5d | 882 | Status = EmmcTuningClkForHs200 (PciIo, PassThru, Slot, BusMode->BusWidth);\r |
48555339 FT |
883 | \r |
884 | return Status;\r | |
885 | }\r | |
886 | \r | |
887 | /**\r | |
adec1f5d | 888 | Switch to the HS400 timing. This function assumes that eMMC bus is still in legacy mode.\r |
48555339 FT |
889 | \r |
890 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller\r | |
891 | Simplified Spec 3.0 Figure 2-29 for details.\r | |
892 | \r | |
adec1f5d AM |
893 | @param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.\r |
894 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
895 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
896 | @param[in] Rca The relative device address to be assigned.\r | |
897 | @param[in] BusMode Pointer to SD_MMC_BUS_SETTINGS structure containing bus settings.\r | |
48555339 FT |
898 | \r |
899 | @retval EFI_SUCCESS The operation is done correctly.\r | |
900 | @retval Others The operation fails.\r | |
901 | \r | |
902 | **/\r | |
903 | EFI_STATUS\r | |
904 | EmmcSwitchToHS400 (\r | |
905 | IN EFI_PCI_IO_PROTOCOL *PciIo,\r | |
906 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
907 | IN UINT8 Slot,\r | |
908 | IN UINT16 Rca,\r | |
adec1f5d | 909 | IN SD_MMC_BUS_SETTINGS *BusMode\r |
48555339 FT |
910 | )\r |
911 | {\r | |
a8c1fc70 AM |
912 | EFI_STATUS Status;\r |
913 | SD_MMC_BUS_SETTINGS Hs200BusMode;\r | |
914 | UINT32 HsFreq;\r | |
adec1f5d AM |
915 | \r |
916 | if (BusMode->BusTiming != SdMmcMmcHs400 ||\r | |
917 | BusMode->BusWidth != 8) {\r | |
918 | return EFI_INVALID_PARAMETER;\r | |
919 | }\r | |
a4708009 | 920 | \r |
adec1f5d AM |
921 | Hs200BusMode.BusTiming = SdMmcMmcHs200;\r |
922 | Hs200BusMode.BusWidth = BusMode->BusWidth;\r | |
923 | Hs200BusMode.ClockFreq = BusMode->ClockFreq;\r | |
924 | Hs200BusMode.DriverStrength = BusMode->DriverStrength;\r | |
48555339 | 925 | \r |
adec1f5d | 926 | Status = EmmcSwitchToHS200 (PciIo, PassThru, Slot, Rca, &Hs200BusMode);\r |
48555339 FT |
927 | if (EFI_ERROR (Status)) {\r |
928 | return Status;\r | |
929 | }\r | |
adec1f5d | 930 | \r |
48555339 | 931 | //\r |
adec1f5d AM |
932 | // Set to High Speed timing and set the clock frequency to a value less than or equal to 52MHz.\r |
933 | // This step is necessary to be able to switch Bus into 8 bit DDR mode which is unsupported in HS200.\r | |
48555339 | 934 | //\r |
adec1f5d AM |
935 | HsFreq = BusMode->ClockFreq < 52 ? BusMode->ClockFreq : 52;\r |
936 | Status = EmmcSwitchBusTiming (PciIo, PassThru, Slot, Rca, BusMode->DriverStrength, SdMmcMmcHsSdr, HsFreq);\r | |
48555339 FT |
937 | if (EFI_ERROR (Status)) {\r |
938 | return Status;\r | |
939 | }\r | |
a4708009 | 940 | \r |
adec1f5d AM |
941 | Status = EmmcSwitchBusWidth (PciIo, PassThru, Slot, Rca, TRUE, BusMode->BusWidth);\r |
942 | if (EFI_ERROR (Status)) {\r | |
943 | return Status;\r | |
944 | }\r | |
a4708009 | 945 | \r |
adec1f5d AM |
946 | return EmmcSwitchBusTiming (PciIo, PassThru, Slot, Rca, BusMode->DriverStrength, BusMode->BusTiming, BusMode->ClockFreq);\r |
947 | }\r | |
48555339 | 948 | \r |
adec1f5d AM |
949 | /**\r |
950 | Check if passed BusTiming is supported in both controller and card.\r | |
951 | \r | |
952 | @param[in] Private Pointer to controller private data\r | |
953 | @param[in] SlotIndex Index of the slot in the controller\r | |
954 | @param[in] ExtCsd Pointer to the card's extended CSD\r | |
955 | @param[in] BusTiming Bus timing to check\r | |
956 | \r | |
957 | @retval TRUE Both card and controller support given BusTiming\r | |
958 | @retval FALSE Card or controller doesn't support given BusTiming\r | |
959 | **/\r | |
960 | BOOLEAN\r | |
961 | EmmcIsBusTimingSupported (\r | |
962 | IN SD_MMC_HC_PRIVATE_DATA *Private,\r | |
963 | IN UINT8 SlotIndex,\r | |
964 | IN EMMC_EXT_CSD *ExtCsd,\r | |
965 | IN SD_MMC_BUS_MODE BusTiming\r | |
966 | )\r | |
967 | {\r | |
968 | BOOLEAN Supported;\r | |
969 | SD_MMC_HC_SLOT_CAP *Capabilities;\r | |
970 | \r | |
971 | Capabilities = &Private->Capability[SlotIndex];\r | |
972 | \r | |
973 | Supported = FALSE;\r | |
974 | switch (BusTiming) {\r | |
975 | case SdMmcMmcHs400:\r | |
976 | if ((((ExtCsd->DeviceType & (BIT6 | BIT7)) != 0) && (Capabilities->Hs400 != 0)) && Capabilities->BusWidth8 != 0) {\r | |
977 | Supported = TRUE;\r | |
978 | }\r | |
979 | break;\r | |
980 | case SdMmcMmcHs200:\r | |
981 | if ((((ExtCsd->DeviceType & (BIT4 | BIT5)) != 0) && (Capabilities->Sdr104 != 0))) {\r | |
982 | Supported = TRUE;\r | |
983 | }\r | |
984 | break;\r | |
985 | case SdMmcMmcHsDdr:\r | |
986 | if ((((ExtCsd->DeviceType & (BIT2 | BIT3)) != 0) && (Capabilities->Ddr50 != 0))) {\r | |
987 | Supported = TRUE;\r | |
988 | }\r | |
989 | break;\r | |
990 | case SdMmcMmcHsSdr:\r | |
991 | if ((((ExtCsd->DeviceType & BIT1) != 0) && (Capabilities->HighSpeed != 0))) {\r | |
992 | Supported = TRUE;\r | |
993 | }\r | |
994 | break;\r | |
995 | case SdMmcMmcLegacy:\r | |
996 | if ((ExtCsd->DeviceType & BIT0) != 0) {\r | |
997 | Supported = TRUE;\r | |
998 | }\r | |
999 | break;\r | |
1000 | default:\r | |
1001 | ASSERT (FALSE);\r | |
1002 | }\r | |
1003 | \r | |
1004 | return Supported;\r | |
1005 | }\r | |
1006 | \r | |
1007 | /**\r | |
1008 | Get the target bus timing to set on the link. This function\r | |
1009 | will try to select highest bus timing supported by card, controller\r | |
1010 | and the driver.\r | |
1011 | \r | |
1012 | @param[in] Private Pointer to controller private data\r | |
1013 | @param[in] SlotIndex Index of the slot in the controller\r | |
1014 | @param[in] ExtCsd Pointer to the card's extended CSD\r | |
1015 | \r | |
1016 | @return Bus timing value that should be set on link\r | |
1017 | **/\r | |
1018 | SD_MMC_BUS_MODE\r | |
1019 | EmmcGetTargetBusTiming (\r | |
1020 | IN SD_MMC_HC_PRIVATE_DATA *Private,\r | |
1021 | IN UINT8 SlotIndex,\r | |
1022 | IN EMMC_EXT_CSD *ExtCsd\r | |
1023 | )\r | |
1024 | {\r | |
1025 | SD_MMC_BUS_MODE BusTiming;\r | |
1026 | \r | |
1027 | //\r | |
1028 | // We start with highest bus timing that this driver currently supports and\r | |
1029 | // return as soon as we find supported timing.\r | |
1030 | //\r | |
1031 | BusTiming = SdMmcMmcHs400;\r | |
1032 | while (BusTiming > SdMmcMmcLegacy) {\r | |
1033 | if (EmmcIsBusTimingSupported (Private, SlotIndex, ExtCsd, BusTiming)) {\r | |
1034 | break;\r | |
1035 | }\r | |
1036 | BusTiming--;\r | |
1037 | }\r | |
1038 | \r | |
1039 | return BusTiming;\r | |
1040 | }\r | |
1041 | \r | |
1042 | /**\r | |
1043 | Check if the passed bus width is supported by controller and card.\r | |
1044 | \r | |
1045 | @param[in] Private Pointer to controller private data\r | |
1046 | @param[in] SlotIndex Index of the slot in the controller\r | |
1047 | @param[in] BusTiming Bus timing set on the link\r | |
1048 | @param[in] BusWidth Bus width to check\r | |
1049 | \r | |
1050 | @retval TRUE Passed bus width is supported in current bus configuration\r | |
1051 | @retval FALSE Passed bus width is not supported in current bus configuration\r | |
1052 | **/\r | |
1053 | BOOLEAN\r | |
1054 | EmmcIsBusWidthSupported (\r | |
1055 | IN SD_MMC_HC_PRIVATE_DATA *Private,\r | |
1056 | IN UINT8 SlotIndex,\r | |
1057 | IN SD_MMC_BUS_MODE BusTiming,\r | |
1058 | IN UINT16 BusWidth\r | |
1059 | )\r | |
1060 | {\r | |
1061 | if (BusWidth == 8 && Private->Capability[SlotIndex].BusWidth8 != 0) {\r | |
1062 | return TRUE;\r | |
1063 | } else if (BusWidth == 4 && BusTiming != SdMmcMmcHs400) {\r | |
1064 | return TRUE;\r | |
1065 | } else if (BusWidth == 1 && (BusTiming == SdMmcMmcHsSdr || BusTiming == SdMmcMmcLegacy)) {\r | |
1066 | return TRUE;\r | |
1067 | }\r | |
1068 | \r | |
1069 | return FALSE;\r | |
1070 | }\r | |
1071 | \r | |
1072 | /**\r | |
1073 | Get the target bus width to be set on the bus.\r | |
1074 | \r | |
1075 | @param[in] Private Pointer to controller private data\r | |
1076 | @param[in] SlotIndex Index of the slot in the controller\r | |
1077 | @param[in] ExtCsd Pointer to card's extended CSD\r | |
1078 | @param[in] BusTiming Bus timing set on the bus\r | |
1079 | \r | |
1080 | @return Bus width to be set on the bus\r | |
1081 | **/\r | |
1082 | UINT8\r | |
1083 | EmmcGetTargetBusWidth (\r | |
1084 | IN SD_MMC_HC_PRIVATE_DATA *Private,\r | |
1085 | IN UINT8 SlotIndex,\r | |
1086 | IN EMMC_EXT_CSD *ExtCsd,\r | |
1087 | IN SD_MMC_BUS_MODE BusTiming\r | |
1088 | )\r | |
1089 | {\r | |
1090 | UINT8 BusWidth;\r | |
1091 | UINT8 PreferredBusWidth;\r | |
1092 | \r | |
1093 | PreferredBusWidth = Private->Slot[SlotIndex].OperatingParameters.BusWidth;\r | |
1094 | \r | |
1095 | if (PreferredBusWidth != EDKII_SD_MMC_BUS_WIDTH_IGNORE &&\r | |
1096 | EmmcIsBusWidthSupported (Private, SlotIndex, BusTiming, PreferredBusWidth)) {\r | |
1097 | BusWidth = PreferredBusWidth;\r | |
1098 | } else if (EmmcIsBusWidthSupported (Private, SlotIndex, BusTiming, 8)) {\r | |
1099 | BusWidth = 8;\r | |
1100 | } else if (EmmcIsBusWidthSupported (Private, SlotIndex, BusTiming, 4)) {\r | |
1101 | BusWidth = 4;\r | |
1102 | } else {\r | |
1103 | BusWidth = 1;\r | |
1104 | }\r | |
1105 | \r | |
1106 | return BusWidth;\r | |
1107 | }\r | |
1108 | \r | |
1109 | /**\r | |
1110 | Get the target clock frequency to be set on the bus.\r | |
1111 | \r | |
1112 | @param[in] Private Pointer to controller private data\r | |
1113 | @param[in] SlotIndex Index of the slot in the controller\r | |
1114 | @param[in] ExtCsd Pointer to card's extended CSD\r | |
1115 | @param[in] BusTiming Bus timing to be set on the bus\r | |
1116 | \r | |
1117 | @return Value of the clock frequency to be set on bus in MHz\r | |
1118 | **/\r | |
1119 | UINT32\r | |
1120 | EmmcGetTargetClockFreq (\r | |
1121 | IN SD_MMC_HC_PRIVATE_DATA *Private,\r | |
1122 | IN UINT8 SlotIndex,\r | |
1123 | IN EMMC_EXT_CSD *ExtCsd,\r | |
1124 | IN SD_MMC_BUS_MODE BusTiming\r | |
1125 | )\r | |
1126 | {\r | |
1127 | UINT32 PreferredClockFreq;\r | |
1128 | UINT32 MaxClockFreq;\r | |
1129 | \r | |
1130 | PreferredClockFreq = Private->Slot[SlotIndex].OperatingParameters.ClockFreq;\r | |
1131 | \r | |
1132 | switch (BusTiming) {\r | |
1133 | case SdMmcMmcHs400:\r | |
1134 | case SdMmcMmcHs200:\r | |
1135 | MaxClockFreq = 200;\r | |
1136 | break;\r | |
1137 | case SdMmcMmcHsSdr:\r | |
1138 | case SdMmcMmcHsDdr:\r | |
1139 | MaxClockFreq = 52;\r | |
1140 | break;\r | |
1141 | default:\r | |
1142 | MaxClockFreq = 26;\r | |
1143 | break;\r | |
1144 | }\r | |
1145 | \r | |
1146 | if (PreferredClockFreq != EDKII_SD_MMC_CLOCK_FREQ_IGNORE && PreferredClockFreq < MaxClockFreq) {\r | |
1147 | return PreferredClockFreq;\r | |
1148 | } else {\r | |
1149 | return MaxClockFreq;\r | |
1150 | }\r | |
1151 | }\r | |
1152 | \r | |
1153 | /**\r | |
1154 | Get the driver strength to be set on bus.\r | |
1155 | \r | |
1156 | @param[in] Private Pointer to controller private data\r | |
1157 | @param[in] SlotIndex Index of the slot in the controller\r | |
1158 | @param[in] ExtCsd Pointer to card's extended CSD\r | |
1159 | @param[in] BusTiming Bus timing set on the bus\r | |
1160 | \r | |
1161 | @return Value of the driver strength to be set on the bus\r | |
1162 | **/\r | |
1163 | EDKII_SD_MMC_DRIVER_STRENGTH\r | |
1164 | EmmcGetTargetDriverStrength (\r | |
1165 | IN SD_MMC_HC_PRIVATE_DATA *Private,\r | |
1166 | IN UINT8 SlotIndex,\r | |
1167 | IN EMMC_EXT_CSD *ExtCsd,\r | |
1168 | IN SD_MMC_BUS_MODE BusTiming\r | |
1169 | )\r | |
1170 | {\r | |
1171 | EDKII_SD_MMC_DRIVER_STRENGTH PreferredDriverStrength;\r | |
1172 | EDKII_SD_MMC_DRIVER_STRENGTH DriverStrength;\r | |
1173 | \r | |
1174 | PreferredDriverStrength = Private->Slot[SlotIndex].OperatingParameters.DriverStrength;\r | |
1175 | DriverStrength.Emmc = EmmcDriverStrengthType0;\r | |
1176 | \r | |
1177 | if (PreferredDriverStrength.Emmc != EDKII_SD_MMC_DRIVER_STRENGTH_IGNORE &&\r | |
1178 | (ExtCsd->DriverStrength & (BIT0 << PreferredDriverStrength.Emmc))) {\r | |
1179 | DriverStrength.Emmc = PreferredDriverStrength.Emmc;\r | |
1180 | }\r | |
1181 | \r | |
1182 | return DriverStrength;\r | |
1183 | }\r | |
1184 | \r | |
1185 | /**\r | |
1186 | Get the target settings for the bus mode.\r | |
1187 | \r | |
1188 | @param[in] Private Pointer to controller private data\r | |
1189 | @param[in] SlotIndex Index of the slot in the controller\r | |
1190 | @param[in] ExtCsd Pointer to card's extended CSD\r | |
1191 | @param[out] BusMode Target configuration of the bus\r | |
1192 | **/\r | |
1193 | VOID\r | |
1194 | EmmcGetTargetBusMode (\r | |
1195 | IN SD_MMC_HC_PRIVATE_DATA *Private,\r | |
1196 | IN UINT8 SlotIndex,\r | |
1197 | IN EMMC_EXT_CSD *ExtCsd,\r | |
1198 | OUT SD_MMC_BUS_SETTINGS *BusMode\r | |
1199 | )\r | |
1200 | {\r | |
1201 | BusMode->BusTiming = EmmcGetTargetBusTiming (Private, SlotIndex, ExtCsd);\r | |
1202 | BusMode->BusWidth = EmmcGetTargetBusWidth (Private, SlotIndex, ExtCsd, BusMode->BusTiming);\r | |
1203 | BusMode->ClockFreq = EmmcGetTargetClockFreq (Private, SlotIndex, ExtCsd, BusMode->BusTiming);\r | |
1204 | BusMode->DriverStrength = EmmcGetTargetDriverStrength (Private, SlotIndex, ExtCsd, BusMode->BusTiming);\r | |
48555339 FT |
1205 | }\r |
1206 | \r | |
1207 | /**\r | |
1208 | Switch the high speed timing according to request.\r | |
1209 | \r | |
1210 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.6.8 and SD Host Controller\r | |
1211 | Simplified Spec 3.0 Figure 2-29 for details.\r | |
1212 | \r | |
1213 | @param[in] PciIo A pointer to the EFI_PCI_IO_PROTOCOL instance.\r | |
1214 | @param[in] PassThru A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.\r | |
1215 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
1216 | @param[in] Rca The relative device address to be assigned.\r | |
1217 | \r | |
1218 | @retval EFI_SUCCESS The operation is done correctly.\r | |
1219 | @retval Others The operation fails.\r | |
1220 | \r | |
1221 | **/\r | |
1222 | EFI_STATUS\r | |
1223 | EmmcSetBusMode (\r | |
1224 | IN EFI_PCI_IO_PROTOCOL *PciIo,\r | |
1225 | IN EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru,\r | |
1226 | IN UINT8 Slot,\r | |
1227 | IN UINT16 Rca\r | |
1228 | )\r | |
1229 | {\r | |
1230 | EFI_STATUS Status;\r | |
1231 | EMMC_CSD Csd;\r | |
1232 | EMMC_EXT_CSD ExtCsd;\r | |
adec1f5d | 1233 | SD_MMC_BUS_SETTINGS BusMode;\r |
48555339 FT |
1234 | SD_MMC_HC_PRIVATE_DATA *Private;\r |
1235 | \r | |
1236 | Private = SD_MMC_HC_PRIVATE_FROM_THIS (PassThru);\r | |
1237 | \r | |
1238 | Status = EmmcGetCsd (PassThru, Slot, Rca, &Csd);\r | |
1239 | if (EFI_ERROR (Status)) {\r | |
e27ccaba | 1240 | DEBUG ((DEBUG_ERROR, "EmmcSetBusMode: GetCsd fails with %r\n", Status));\r |
48555339 FT |
1241 | return Status;\r |
1242 | }\r | |
1243 | \r | |
1244 | Status = EmmcSelect (PassThru, Slot, Rca);\r | |
1245 | if (EFI_ERROR (Status)) {\r | |
e27ccaba | 1246 | DEBUG ((DEBUG_ERROR, "EmmcSetBusMode: Select fails with %r\n", Status));\r |
48555339 FT |
1247 | return Status;\r |
1248 | }\r | |
1249 | \r | |
7f3b0bad | 1250 | ASSERT (Private->BaseClkFreq[Slot] != 0);\r |
adec1f5d | 1251 | \r |
48555339 | 1252 | //\r |
adec1f5d | 1253 | // Get Device_Type from EXT_CSD register.\r |
48555339 FT |
1254 | //\r |
1255 | Status = EmmcGetExtCsd (PassThru, Slot, &ExtCsd);\r | |
1256 | if (EFI_ERROR (Status)) {\r | |
e27ccaba | 1257 | DEBUG ((DEBUG_ERROR, "EmmcSetBusMode: GetExtCsd fails with %r\n", Status));\r |
48555339 FT |
1258 | return Status;\r |
1259 | }\r | |
48555339 | 1260 | \r |
adec1f5d | 1261 | EmmcGetTargetBusMode (Private, Slot, &ExtCsd, &BusMode);\r |
48555339 | 1262 | \r |
adec1f5d AM |
1263 | DEBUG ((DEBUG_INFO, "EmmcSetBusMode: Target bus mode: timing = %d, width = %d, clock freq = %d, driver strength = %d\n",\r |
1264 | BusMode.BusTiming, BusMode.BusWidth, BusMode.ClockFreq, BusMode.DriverStrength.Emmc));\r | |
48555339 | 1265 | \r |
adec1f5d AM |
1266 | if (BusMode.BusTiming == SdMmcMmcHs400) {\r |
1267 | Status = EmmcSwitchToHS400 (PciIo, PassThru, Slot, Rca, &BusMode);\r | |
1268 | } else if (BusMode.BusTiming == SdMmcMmcHs200) {\r | |
1269 | Status = EmmcSwitchToHS200 (PciIo, PassThru, Slot, Rca, &BusMode);\r | |
48555339 | 1270 | } else {\r |
76e1e563 AM |
1271 | //\r |
1272 | // Note that EmmcSwitchToHighSpeed is also called for SdMmcMmcLegacy\r | |
1273 | // bus timing. This is because even though we might not want to\r | |
1274 | // change the timing itself we still want to allow customization of\r | |
1275 | // bus parameters such as clock frequency and bus width.\r | |
1276 | //\r | |
adec1f5d | 1277 | Status = EmmcSwitchToHighSpeed (PciIo, PassThru, Slot, Rca, &BusMode);\r |
48555339 FT |
1278 | }\r |
1279 | \r | |
adec1f5d | 1280 | DEBUG ((DEBUG_INFO, "EmmcSetBusMode: Switch to %a %r\n", (BusMode.BusTiming == SdMmcMmcHs400) ? "HS400" : ((BusMode.BusTiming == SdMmcMmcHs200) ? "HS200" : "HighSpeed"), Status));\r |
48555339 FT |
1281 | \r |
1282 | return Status;\r | |
1283 | }\r | |
1284 | \r | |
1285 | /**\r | |
1286 | Execute EMMC device identification procedure.\r | |
1287 | \r | |
1288 | Refer to EMMC Electrical Standard Spec 5.1 Section 6.4 for details.\r | |
1289 | \r | |
1290 | @param[in] Private A pointer to the SD_MMC_HC_PRIVATE_DATA instance.\r | |
1291 | @param[in] Slot The slot number of the SD card to send the command to.\r | |
1292 | \r | |
1293 | @retval EFI_SUCCESS There is a EMMC card.\r | |
1294 | @retval Others There is not a EMMC card.\r | |
1295 | \r | |
1296 | **/\r | |
1297 | EFI_STATUS\r | |
1298 | EmmcIdentification (\r | |
1299 | IN SD_MMC_HC_PRIVATE_DATA *Private,\r | |
1300 | IN UINT8 Slot\r | |
1301 | )\r | |
1302 | {\r | |
1303 | EFI_STATUS Status;\r | |
1304 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
1305 | EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;\r | |
1306 | UINT32 Ocr;\r | |
1307 | UINT16 Rca;\r | |
ec86d285 | 1308 | UINTN Retry;\r |
48555339 FT |
1309 | \r |
1310 | PciIo = Private->PciIo;\r | |
1311 | PassThru = &Private->PassThru;\r | |
1312 | \r | |
1313 | Status = EmmcReset (PassThru, Slot);\r | |
1314 | if (EFI_ERROR (Status)) {\r | |
e27ccaba | 1315 | DEBUG ((DEBUG_VERBOSE, "EmmcIdentification: Executing Cmd0 fails with %r\n", Status));\r |
48555339 FT |
1316 | return Status;\r |
1317 | }\r | |
1318 | \r | |
ec86d285 FT |
1319 | Ocr = 0;\r |
1320 | Retry = 0;\r | |
48555339 FT |
1321 | do {\r |
1322 | Status = EmmcGetOcr (PassThru, Slot, &Ocr);\r | |
1323 | if (EFI_ERROR (Status)) {\r | |
e27ccaba | 1324 | DEBUG ((DEBUG_VERBOSE, "EmmcIdentification: Executing Cmd1 fails with %r\n", Status));\r |
48555339 FT |
1325 | return Status;\r |
1326 | }\r | |
1327 | Ocr |= BIT30;\r | |
ec86d285 FT |
1328 | \r |
1329 | if (Retry++ == 100) {\r | |
1330 | DEBUG ((DEBUG_VERBOSE, "EmmcIdentification: Executing Cmd1 fails too many times\n"));\r | |
1331 | return EFI_DEVICE_ERROR;\r | |
1332 | }\r | |
1333 | gBS->Stall(10 * 1000);\r | |
48555339 FT |
1334 | } while ((Ocr & BIT31) == 0);\r |
1335 | \r | |
1336 | Status = EmmcGetAllCid (PassThru, Slot);\r | |
1337 | if (EFI_ERROR (Status)) {\r | |
e27ccaba | 1338 | DEBUG ((DEBUG_VERBOSE, "EmmcIdentification: Executing Cmd2 fails with %r\n", Status));\r |
48555339 FT |
1339 | return Status;\r |
1340 | }\r | |
1341 | //\r | |
1342 | // Slot starts from 0 and valid RCA starts from 1.\r | |
1343 | // Here we takes a simple formula to calculate the RCA.\r | |
1344 | // Don't support multiple devices on the slot, that is\r | |
1345 | // shared bus slot feature.\r | |
1346 | //\r | |
1347 | Rca = Slot + 1;\r | |
1348 | Status = EmmcSetRca (PassThru, Slot, Rca);\r | |
1349 | if (EFI_ERROR (Status)) {\r | |
e27ccaba | 1350 | DEBUG ((DEBUG_ERROR, "EmmcIdentification: Executing Cmd3 fails with %r\n", Status));\r |
48555339 FT |
1351 | return Status;\r |
1352 | }\r | |
1353 | //\r | |
1354 | // Enter Data Tranfer Mode.\r | |
1355 | //\r | |
e27ccaba | 1356 | DEBUG ((DEBUG_INFO, "EmmcIdentification: Found a EMMC device at slot [%d], RCA [%d]\n", Slot, Rca));\r |
48555339 FT |
1357 | Private->Slot[Slot].CardType = EmmcCardType;\r |
1358 | \r | |
1359 | Status = EmmcSetBusMode (PciIo, PassThru, Slot, Rca);\r | |
1360 | \r | |
1361 | return Status;\r | |
1362 | }\r | |
1363 | \r |