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1 | /** @file\r | |
2 | This file implement the MMC Host Protocol for the DesignWare eMMC.\r | |
3 | \r | |
4 | Copyright (c) 2014-2017, Linaro Limited. All rights reserved.\r | |
5 | \r | |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include <Library/BaseMemoryLib.h>\r | |
17 | #include <Library/CacheMaintenanceLib.h>\r | |
18 | #include <Library/DebugLib.h>\r | |
19 | #include <Library/DevicePathLib.h>\r | |
20 | #include <Library/IoLib.h>\r | |
21 | #include <Library/MemoryAllocationLib.h>\r | |
22 | #include <Library/PcdLib.h>\r | |
23 | #include <Library/TimerLib.h>\r | |
24 | #include <Library/UefiBootServicesTableLib.h>\r | |
25 | #include <Library/UefiLib.h>\r | |
26 | \r | |
27 | #include <Protocol/MmcHost.h>\r | |
28 | \r | |
29 | #include "DwEmmc.h"\r | |
30 | \r | |
31 | #define DWEMMC_DESC_PAGE 1\r | |
32 | #define DWEMMC_BLOCK_SIZE 512\r | |
33 | #define DWEMMC_DMA_BUF_SIZE (512 * 8)\r | |
34 | #define DWEMMC_MAX_DESC_PAGES 512\r | |
35 | \r | |
36 | typedef struct {\r | |
37 | UINT32 Des0;\r | |
38 | UINT32 Des1;\r | |
39 | UINT32 Des2;\r | |
40 | UINT32 Des3;\r | |
41 | } DWEMMC_IDMAC_DESCRIPTOR;\r | |
42 | \r | |
43 | EFI_MMC_HOST_PROTOCOL *gpMmcHost;\r | |
44 | DWEMMC_IDMAC_DESCRIPTOR *gpIdmacDesc;\r | |
45 | EFI_GUID mDwEmmcDevicePathGuid = EFI_CALLER_ID_GUID;\r | |
46 | STATIC UINT32 mDwEmmcCommand;\r | |
47 | STATIC UINT32 mDwEmmcArgument;\r | |
48 | \r | |
49 | EFI_STATUS\r | |
50 | DwEmmcReadBlockData (\r | |
51 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
52 | IN EFI_LBA Lba,\r | |
53 | IN UINTN Length,\r | |
54 | IN UINT32* Buffer\r | |
55 | );\r | |
56 | \r | |
57 | BOOLEAN\r | |
58 | DwEmmcIsPowerOn (\r | |
59 | VOID\r | |
60 | )\r | |
61 | {\r | |
62 | return TRUE;\r | |
63 | }\r | |
64 | \r | |
65 | EFI_STATUS\r | |
66 | DwEmmcInitialize (\r | |
67 | VOID\r | |
68 | )\r | |
69 | {\r | |
70 | DEBUG ((DEBUG_BLKIO, "DwEmmcInitialize()"));\r | |
71 | return EFI_SUCCESS;\r | |
72 | }\r | |
73 | \r | |
74 | BOOLEAN\r | |
75 | DwEmmcIsCardPresent (\r | |
76 | IN EFI_MMC_HOST_PROTOCOL *This\r | |
77 | )\r | |
78 | {\r | |
79 | return TRUE;\r | |
80 | }\r | |
81 | \r | |
82 | BOOLEAN\r | |
83 | DwEmmcIsReadOnly (\r | |
84 | IN EFI_MMC_HOST_PROTOCOL *This\r | |
85 | )\r | |
86 | {\r | |
87 | return FALSE;\r | |
88 | }\r | |
89 | \r | |
90 | BOOLEAN\r | |
91 | DwEmmcIsDmaSupported (\r | |
92 | IN EFI_MMC_HOST_PROTOCOL *This\r | |
93 | )\r | |
94 | {\r | |
95 | return TRUE;\r | |
96 | }\r | |
97 | \r | |
98 | EFI_STATUS\r | |
99 | DwEmmcBuildDevicePath (\r | |
100 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
101 | IN EFI_DEVICE_PATH_PROTOCOL **DevicePath\r | |
102 | )\r | |
103 | {\r | |
104 | EFI_DEVICE_PATH_PROTOCOL *NewDevicePathNode;\r | |
105 | \r | |
106 | NewDevicePathNode = CreateDeviceNode (HARDWARE_DEVICE_PATH, HW_VENDOR_DP, sizeof (VENDOR_DEVICE_PATH));\r | |
107 | CopyGuid (& ((VENDOR_DEVICE_PATH*)NewDevicePathNode)->Guid, &mDwEmmcDevicePathGuid);\r | |
108 | \r | |
109 | *DevicePath = NewDevicePathNode;\r | |
110 | return EFI_SUCCESS;\r | |
111 | }\r | |
112 | \r | |
113 | EFI_STATUS\r | |
114 | DwEmmcUpdateClock (\r | |
115 | VOID\r | |
116 | )\r | |
117 | {\r | |
118 | UINT32 Data;\r | |
119 | \r | |
120 | /* CMD_UPDATE_CLK */\r | |
121 | Data = BIT_CMD_WAIT_PRVDATA_COMPLETE | BIT_CMD_UPDATE_CLOCK_ONLY |\r | |
122 | BIT_CMD_START;\r | |
123 | MmioWrite32 (DWEMMC_CMD, Data);\r | |
124 | while (1) {\r | |
125 | Data = MmioRead32 (DWEMMC_CMD);\r | |
126 | if (!(Data & CMD_START_BIT)) {\r | |
127 | break;\r | |
128 | }\r | |
129 | Data = MmioRead32 (DWEMMC_RINTSTS);\r | |
130 | if (Data & DWEMMC_INT_HLE) {\r | |
131 | Print (L"failed to update mmc clock frequency\n");\r | |
132 | return EFI_DEVICE_ERROR;\r | |
133 | }\r | |
134 | }\r | |
135 | return EFI_SUCCESS;\r | |
136 | }\r | |
137 | \r | |
138 | EFI_STATUS\r | |
139 | DwEmmcSetClock (\r | |
140 | IN UINTN ClockFreq\r | |
141 | )\r | |
142 | {\r | |
143 | UINT32 Divider, Rate, Data;\r | |
144 | EFI_STATUS Status;\r | |
145 | BOOLEAN Found = FALSE;\r | |
146 | \r | |
147 | for (Divider = 1; Divider < 256; Divider++) {\r | |
148 | Rate = PcdGet32 (PcdDwEmmcDxeClockFrequencyInHz);\r | |
149 | if ((Rate / (2 * Divider)) <= ClockFreq) {\r | |
150 | Found = TRUE;\r | |
151 | break;\r | |
152 | }\r | |
153 | }\r | |
154 | if (Found == FALSE) {\r | |
155 | return EFI_NOT_FOUND;\r | |
156 | }\r | |
157 | \r | |
158 | // Wait until MMC is idle\r | |
159 | do {\r | |
160 | Data = MmioRead32 (DWEMMC_STATUS);\r | |
161 | } while (Data & DWEMMC_STS_DATA_BUSY);\r | |
162 | \r | |
163 | // Disable MMC clock first\r | |
164 | MmioWrite32 (DWEMMC_CLKENA, 0);\r | |
165 | Status = DwEmmcUpdateClock ();\r | |
166 | ASSERT (!EFI_ERROR (Status));\r | |
167 | \r | |
168 | MmioWrite32 (DWEMMC_CLKDIV, Divider);\r | |
169 | Status = DwEmmcUpdateClock ();\r | |
170 | ASSERT (!EFI_ERROR (Status));\r | |
171 | \r | |
172 | // Enable MMC clock\r | |
173 | MmioWrite32 (DWEMMC_CLKENA, 1);\r | |
174 | MmioWrite32 (DWEMMC_CLKSRC, 0);\r | |
175 | Status = DwEmmcUpdateClock ();\r | |
176 | ASSERT (!EFI_ERROR (Status));\r | |
177 | return EFI_SUCCESS;\r | |
178 | }\r | |
179 | \r | |
180 | EFI_STATUS\r | |
181 | DwEmmcNotifyState (\r | |
182 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
183 | IN MMC_STATE State\r | |
184 | )\r | |
185 | {\r | |
186 | UINT32 Data;\r | |
187 | EFI_STATUS Status;\r | |
188 | \r | |
189 | switch (State) {\r | |
190 | case MmcInvalidState:\r | |
191 | return EFI_INVALID_PARAMETER;\r | |
192 | case MmcHwInitializationState:\r | |
193 | MmioWrite32 (DWEMMC_PWREN, 1);\r | |
194 | \r | |
195 | // If device already turn on then restart it\r | |
196 | Data = DWEMMC_CTRL_RESET_ALL;\r | |
197 | MmioWrite32 (DWEMMC_CTRL, Data);\r | |
198 | do {\r | |
199 | // Wait until reset operation finished\r | |
200 | Data = MmioRead32 (DWEMMC_CTRL);\r | |
201 | } while (Data & DWEMMC_CTRL_RESET_ALL);\r | |
202 | \r | |
203 | // Setup clock that could not be higher than 400KHz.\r | |
204 | Status = DwEmmcSetClock (400000);\r | |
205 | ASSERT (!EFI_ERROR (Status));\r | |
206 | // Wait clock stable\r | |
207 | MicroSecondDelay (100);\r | |
208 | \r | |
209 | MmioWrite32 (DWEMMC_RINTSTS, ~0);\r | |
210 | MmioWrite32 (DWEMMC_INTMASK, 0);\r | |
211 | MmioWrite32 (DWEMMC_TMOUT, ~0);\r | |
212 | MmioWrite32 (DWEMMC_IDINTEN, 0);\r | |
213 | MmioWrite32 (DWEMMC_BMOD, DWEMMC_IDMAC_SWRESET);\r | |
214 | \r | |
215 | MmioWrite32 (DWEMMC_BLKSIZ, DWEMMC_BLOCK_SIZE);\r | |
216 | do {\r | |
217 | Data = MmioRead32 (DWEMMC_BMOD);\r | |
218 | } while (Data & DWEMMC_IDMAC_SWRESET);\r | |
219 | break;\r | |
220 | case MmcIdleState:\r | |
221 | break;\r | |
222 | case MmcReadyState:\r | |
223 | break;\r | |
224 | case MmcIdentificationState:\r | |
225 | break;\r | |
226 | case MmcStandByState:\r | |
227 | break;\r | |
228 | case MmcTransferState:\r | |
229 | break;\r | |
230 | case MmcSendingDataState:\r | |
231 | break;\r | |
232 | case MmcReceiveDataState:\r | |
233 | break;\r | |
234 | case MmcProgrammingState:\r | |
235 | break;\r | |
236 | case MmcDisconnectState:\r | |
237 | break;\r | |
238 | default:\r | |
239 | return EFI_INVALID_PARAMETER;\r | |
240 | }\r | |
241 | return EFI_SUCCESS;\r | |
242 | }\r | |
243 | \r | |
244 | // Need to prepare DMA buffer first before sending commands to MMC card\r | |
245 | BOOLEAN\r | |
246 | IsPendingReadCommand (\r | |
247 | IN MMC_CMD MmcCmd\r | |
248 | )\r | |
249 | {\r | |
250 | UINTN Mask;\r | |
251 | \r | |
252 | Mask = BIT_CMD_DATA_EXPECTED | BIT_CMD_READ;\r | |
253 | if ((MmcCmd & Mask) == Mask) {\r | |
254 | return TRUE;\r | |
255 | }\r | |
256 | return FALSE;\r | |
257 | }\r | |
258 | \r | |
259 | BOOLEAN\r | |
260 | IsPendingWriteCommand (\r | |
261 | IN MMC_CMD MmcCmd\r | |
262 | )\r | |
263 | {\r | |
264 | UINTN Mask;\r | |
265 | \r | |
266 | Mask = BIT_CMD_DATA_EXPECTED | BIT_CMD_WRITE;\r | |
267 | if ((MmcCmd & Mask) == Mask) {\r | |
268 | return TRUE;\r | |
269 | }\r | |
270 | return FALSE;\r | |
271 | }\r | |
272 | \r | |
273 | EFI_STATUS\r | |
274 | SendCommand (\r | |
275 | IN MMC_CMD MmcCmd,\r | |
276 | IN UINT32 Argument\r | |
277 | )\r | |
278 | {\r | |
279 | UINT32 Data, ErrMask;\r | |
280 | \r | |
281 | // Wait until MMC is idle\r | |
282 | do {\r | |
283 | Data = MmioRead32 (DWEMMC_STATUS);\r | |
284 | } while (Data & DWEMMC_STS_DATA_BUSY);\r | |
285 | \r | |
286 | MmioWrite32 (DWEMMC_RINTSTS, ~0);\r | |
287 | MmioWrite32 (DWEMMC_CMDARG, Argument);\r | |
288 | MmioWrite32 (DWEMMC_CMD, MmcCmd);\r | |
289 | \r | |
290 | ErrMask = DWEMMC_INT_EBE | DWEMMC_INT_HLE | DWEMMC_INT_RTO |\r | |
291 | DWEMMC_INT_RCRC | DWEMMC_INT_RE;\r | |
292 | ErrMask |= DWEMMC_INT_DCRC | DWEMMC_INT_DRT | DWEMMC_INT_SBE;\r | |
293 | do {\r | |
294 | MicroSecondDelay(500);\r | |
295 | Data = MmioRead32 (DWEMMC_RINTSTS);\r | |
296 | \r | |
297 | if (Data & ErrMask) {\r | |
298 | return EFI_DEVICE_ERROR;\r | |
299 | }\r | |
300 | if (Data & DWEMMC_INT_DTO) { // Transfer Done\r | |
301 | break;\r | |
302 | }\r | |
303 | } while (!(Data & DWEMMC_INT_CMD_DONE));\r | |
304 | return EFI_SUCCESS;\r | |
305 | }\r | |
306 | \r | |
307 | EFI_STATUS\r | |
308 | DwEmmcSendCommand (\r | |
309 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
310 | IN MMC_CMD MmcCmd,\r | |
311 | IN UINT32 Argument\r | |
312 | )\r | |
313 | {\r | |
314 | UINT32 Cmd = 0;\r | |
315 | EFI_STATUS Status = EFI_SUCCESS;\r | |
316 | \r | |
317 | switch (MMC_GET_INDX(MmcCmd)) {\r | |
318 | case MMC_INDX(0):\r | |
319 | Cmd = BIT_CMD_SEND_INIT;\r | |
320 | break;\r | |
321 | case MMC_INDX(1):\r | |
322 | Cmd = BIT_CMD_RESPONSE_EXPECT;\r | |
323 | break;\r | |
324 | case MMC_INDX(2):\r | |
325 | Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_LONG_RESPONSE |\r | |
326 | BIT_CMD_CHECK_RESPONSE_CRC | BIT_CMD_SEND_INIT;\r | |
327 | break;\r | |
328 | case MMC_INDX(3):\r | |
329 | Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |\r | |
330 | BIT_CMD_SEND_INIT;\r | |
331 | break;\r | |
332 | case MMC_INDX(7):\r | |
333 | if (Argument)\r | |
334 | Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC;\r | |
335 | else\r | |
336 | Cmd = 0;\r | |
337 | break;\r | |
338 | case MMC_INDX(8):\r | |
339 | Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |\r | |
340 | BIT_CMD_DATA_EXPECTED | BIT_CMD_READ |\r | |
341 | BIT_CMD_WAIT_PRVDATA_COMPLETE;\r | |
342 | break;\r | |
343 | case MMC_INDX(9):\r | |
344 | Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |\r | |
345 | BIT_CMD_LONG_RESPONSE;\r | |
346 | break;\r | |
347 | case MMC_INDX(12):\r | |
348 | Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |\r | |
349 | BIT_CMD_STOP_ABORT_CMD;\r | |
350 | break;\r | |
351 | case MMC_INDX(13):\r | |
352 | Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |\r | |
353 | BIT_CMD_WAIT_PRVDATA_COMPLETE;\r | |
354 | break;\r | |
355 | case MMC_INDX(16):\r | |
356 | Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |\r | |
357 | BIT_CMD_DATA_EXPECTED | BIT_CMD_READ |\r | |
358 | BIT_CMD_WAIT_PRVDATA_COMPLETE;\r | |
359 | break;\r | |
360 | case MMC_INDX(17):\r | |
361 | case MMC_INDX(18):\r | |
362 | Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |\r | |
363 | BIT_CMD_DATA_EXPECTED | BIT_CMD_READ |\r | |
364 | BIT_CMD_WAIT_PRVDATA_COMPLETE;\r | |
365 | break;\r | |
366 | case MMC_INDX(24):\r | |
367 | case MMC_INDX(25):\r | |
368 | Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |\r | |
369 | BIT_CMD_DATA_EXPECTED | BIT_CMD_WRITE |\r | |
370 | BIT_CMD_WAIT_PRVDATA_COMPLETE;\r | |
371 | break;\r | |
372 | case MMC_INDX(30):\r | |
373 | Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC |\r | |
374 | BIT_CMD_DATA_EXPECTED;\r | |
375 | break;\r | |
376 | default:\r | |
377 | Cmd = BIT_CMD_RESPONSE_EXPECT | BIT_CMD_CHECK_RESPONSE_CRC;\r | |
378 | break;\r | |
379 | }\r | |
380 | \r | |
381 | Cmd |= MMC_GET_INDX(MmcCmd) | BIT_CMD_USE_HOLD_REG | BIT_CMD_START;\r | |
382 | if (IsPendingReadCommand (Cmd) || IsPendingWriteCommand (Cmd)) {\r | |
383 | mDwEmmcCommand = Cmd;\r | |
384 | mDwEmmcArgument = Argument;\r | |
385 | } else {\r | |
386 | Status = SendCommand (Cmd, Argument);\r | |
387 | }\r | |
388 | return Status;\r | |
389 | }\r | |
390 | \r | |
391 | EFI_STATUS\r | |
392 | DwEmmcReceiveResponse (\r | |
393 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
394 | IN MMC_RESPONSE_TYPE Type,\r | |
395 | IN UINT32* Buffer\r | |
396 | )\r | |
397 | {\r | |
398 | if (Buffer == NULL) {\r | |
399 | return EFI_INVALID_PARAMETER;\r | |
400 | }\r | |
401 | \r | |
402 | if ( (Type == MMC_RESPONSE_TYPE_R1)\r | |
403 | || (Type == MMC_RESPONSE_TYPE_R1b)\r | |
404 | || (Type == MMC_RESPONSE_TYPE_R3)\r | |
405 | || (Type == MMC_RESPONSE_TYPE_R6)\r | |
406 | || (Type == MMC_RESPONSE_TYPE_R7))\r | |
407 | {\r | |
408 | Buffer[0] = MmioRead32 (DWEMMC_RESP0);\r | |
409 | } else if (Type == MMC_RESPONSE_TYPE_R2) {\r | |
410 | Buffer[0] = MmioRead32 (DWEMMC_RESP0);\r | |
411 | Buffer[1] = MmioRead32 (DWEMMC_RESP1);\r | |
412 | Buffer[2] = MmioRead32 (DWEMMC_RESP2);\r | |
413 | Buffer[3] = MmioRead32 (DWEMMC_RESP3);\r | |
414 | }\r | |
415 | return EFI_SUCCESS;\r | |
416 | }\r | |
417 | \r | |
418 | EFI_STATUS\r | |
419 | PrepareDmaData (\r | |
420 | IN DWEMMC_IDMAC_DESCRIPTOR* IdmacDesc,\r | |
421 | IN UINTN Length,\r | |
422 | IN UINT32* Buffer\r | |
423 | )\r | |
424 | {\r | |
425 | UINTN Cnt, Blks, Idx, LastIdx;\r | |
426 | \r | |
427 | Cnt = (Length + DWEMMC_DMA_BUF_SIZE - 1) / DWEMMC_DMA_BUF_SIZE;\r | |
428 | Blks = (Length + DWEMMC_BLOCK_SIZE - 1) / DWEMMC_BLOCK_SIZE;\r | |
429 | Length = DWEMMC_BLOCK_SIZE * Blks;\r | |
430 | \r | |
431 | for (Idx = 0; Idx < Cnt; Idx++) {\r | |
432 | (IdmacDesc + Idx)->Des0 = DWEMMC_IDMAC_DES0_OWN | DWEMMC_IDMAC_DES0_CH |\r | |
433 | DWEMMC_IDMAC_DES0_DIC;\r | |
434 | (IdmacDesc + Idx)->Des1 = DWEMMC_IDMAC_DES1_BS1(DWEMMC_DMA_BUF_SIZE);\r | |
435 | /* Buffer Address */\r | |
436 | (IdmacDesc + Idx)->Des2 = (UINT32)((UINTN)Buffer + DWEMMC_DMA_BUF_SIZE * Idx);\r | |
437 | /* Next Descriptor Address */\r | |
438 | (IdmacDesc + Idx)->Des3 = (UINT32)((UINTN)IdmacDesc +\r | |
439 | (sizeof(DWEMMC_IDMAC_DESCRIPTOR) * (Idx + 1)));\r | |
440 | }\r | |
441 | /* First Descriptor */\r | |
442 | IdmacDesc->Des0 |= DWEMMC_IDMAC_DES0_FS;\r | |
443 | /* Last Descriptor */\r | |
444 | LastIdx = Cnt - 1;\r | |
445 | (IdmacDesc + LastIdx)->Des0 |= DWEMMC_IDMAC_DES0_LD;\r | |
446 | (IdmacDesc + LastIdx)->Des0 &= ~(DWEMMC_IDMAC_DES0_DIC | DWEMMC_IDMAC_DES0_CH);\r | |
447 | (IdmacDesc + LastIdx)->Des1 = DWEMMC_IDMAC_DES1_BS1(Length -\r | |
448 | (LastIdx * DWEMMC_DMA_BUF_SIZE));\r | |
449 | /* Set the Next field of Last Descriptor */\r | |
450 | (IdmacDesc + LastIdx)->Des3 = 0;\r | |
451 | MmioWrite32 (DWEMMC_DBADDR, (UINT32)((UINTN)IdmacDesc));\r | |
452 | \r | |
453 | return EFI_SUCCESS;\r | |
454 | }\r | |
455 | \r | |
456 | VOID\r | |
457 | StartDma (\r | |
458 | UINTN Length\r | |
459 | )\r | |
460 | {\r | |
461 | UINT32 Data;\r | |
462 | \r | |
463 | Data = MmioRead32 (DWEMMC_CTRL);\r | |
464 | Data |= DWEMMC_CTRL_INT_EN | DWEMMC_CTRL_DMA_EN | DWEMMC_CTRL_IDMAC_EN;\r | |
465 | MmioWrite32 (DWEMMC_CTRL, Data);\r | |
466 | Data = MmioRead32 (DWEMMC_BMOD);\r | |
467 | Data |= DWEMMC_IDMAC_ENABLE | DWEMMC_IDMAC_FB;\r | |
468 | MmioWrite32 (DWEMMC_BMOD, Data);\r | |
469 | \r | |
470 | MmioWrite32 (DWEMMC_BLKSIZ, DWEMMC_BLOCK_SIZE);\r | |
471 | MmioWrite32 (DWEMMC_BYTCNT, Length);\r | |
472 | }\r | |
473 | \r | |
474 | EFI_STATUS\r | |
475 | DwEmmcReadBlockData (\r | |
476 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
477 | IN EFI_LBA Lba,\r | |
478 | IN UINTN Length,\r | |
479 | IN UINT32* Buffer\r | |
480 | )\r | |
481 | {\r | |
482 | EFI_STATUS Status;\r | |
483 | UINT32 DescPages, CountPerPage, Count;\r | |
484 | EFI_TPL Tpl;\r | |
485 | \r | |
486 | Tpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
487 | \r | |
488 | CountPerPage = EFI_PAGE_SIZE / 16;\r | |
489 | Count = (Length + DWEMMC_DMA_BUF_SIZE - 1) / DWEMMC_DMA_BUF_SIZE;\r | |
490 | DescPages = (Count + CountPerPage - 1) / CountPerPage;\r | |
491 | \r | |
492 | InvalidateDataCacheRange (Buffer, Length);\r | |
493 | \r | |
494 | Status = PrepareDmaData (gpIdmacDesc, Length, Buffer);\r | |
495 | if (EFI_ERROR (Status)) {\r | |
496 | goto out;\r | |
497 | }\r | |
498 | \r | |
499 | WriteBackDataCacheRange (gpIdmacDesc, DescPages * EFI_PAGE_SIZE);\r | |
500 | StartDma (Length);\r | |
501 | \r | |
502 | Status = SendCommand (mDwEmmcCommand, mDwEmmcArgument);\r | |
503 | if (EFI_ERROR (Status)) {\r | |
504 | DEBUG ((DEBUG_ERROR, "Failed to read data, mDwEmmcCommand:%x, mDwEmmcArgument:%x, Status:%r\n", mDwEmmcCommand, mDwEmmcArgument, Status));\r | |
505 | goto out;\r | |
506 | }\r | |
507 | out:\r | |
508 | // Restore Tpl\r | |
509 | gBS->RestoreTPL (Tpl);\r | |
510 | return Status;\r | |
511 | }\r | |
512 | \r | |
513 | EFI_STATUS\r | |
514 | DwEmmcWriteBlockData (\r | |
515 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
516 | IN EFI_LBA Lba,\r | |
517 | IN UINTN Length,\r | |
518 | IN UINT32* Buffer\r | |
519 | )\r | |
520 | {\r | |
521 | EFI_STATUS Status;\r | |
522 | UINT32 DescPages, CountPerPage, Count;\r | |
523 | EFI_TPL Tpl;\r | |
524 | \r | |
525 | Tpl = gBS->RaiseTPL (TPL_NOTIFY);\r | |
526 | \r | |
527 | CountPerPage = EFI_PAGE_SIZE / 16;\r | |
528 | Count = (Length + DWEMMC_DMA_BUF_SIZE - 1) / DWEMMC_DMA_BUF_SIZE;\r | |
529 | DescPages = (Count + CountPerPage - 1) / CountPerPage;\r | |
530 | \r | |
531 | WriteBackDataCacheRange (Buffer, Length);\r | |
532 | \r | |
533 | Status = PrepareDmaData (gpIdmacDesc, Length, Buffer);\r | |
534 | if (EFI_ERROR (Status)) {\r | |
535 | goto out;\r | |
536 | }\r | |
537 | \r | |
538 | WriteBackDataCacheRange (gpIdmacDesc, DescPages * EFI_PAGE_SIZE);\r | |
539 | StartDma (Length);\r | |
540 | \r | |
541 | Status = SendCommand (mDwEmmcCommand, mDwEmmcArgument);\r | |
542 | if (EFI_ERROR (Status)) {\r | |
543 | DEBUG ((DEBUG_ERROR, "Failed to write data, mDwEmmcCommand:%x, mDwEmmcArgument:%x, Status:%r\n", mDwEmmcCommand, mDwEmmcArgument, Status));\r | |
544 | goto out;\r | |
545 | }\r | |
546 | out:\r | |
547 | // Restore Tpl\r | |
548 | gBS->RestoreTPL (Tpl);\r | |
549 | return Status;\r | |
550 | }\r | |
551 | \r | |
552 | EFI_STATUS\r | |
553 | DwEmmcSetIos (\r | |
554 | IN EFI_MMC_HOST_PROTOCOL *This,\r | |
555 | IN UINT32 BusClockFreq,\r | |
556 | IN UINT32 BusWidth,\r | |
557 | IN UINT32 TimingMode\r | |
558 | )\r | |
559 | {\r | |
560 | EFI_STATUS Status = EFI_SUCCESS;\r | |
561 | UINT32 Data;\r | |
562 | \r | |
563 | if (TimingMode != EMMCBACKWARD) {\r | |
564 | Data = MmioRead32 (DWEMMC_UHSREG);\r | |
565 | switch (TimingMode) {\r | |
566 | case EMMCHS52DDR1V2:\r | |
567 | case EMMCHS52DDR1V8:\r | |
568 | Data |= 1 << 16;\r | |
569 | break;\r | |
570 | case EMMCHS52:\r | |
571 | case EMMCHS26:\r | |
572 | Data &= ~(1 << 16);\r | |
573 | break;\r | |
574 | default:\r | |
575 | return EFI_UNSUPPORTED;\r | |
576 | }\r | |
577 | MmioWrite32 (DWEMMC_UHSREG, Data);\r | |
578 | }\r | |
579 | \r | |
580 | switch (BusWidth) {\r | |
581 | case 1:\r | |
582 | MmioWrite32 (DWEMMC_CTYPE, 0);\r | |
583 | break;\r | |
584 | case 4:\r | |
585 | MmioWrite32 (DWEMMC_CTYPE, 1);\r | |
586 | break;\r | |
587 | case 8:\r | |
588 | MmioWrite32 (DWEMMC_CTYPE, 1 << 16);\r | |
589 | break;\r | |
590 | default:\r | |
591 | return EFI_UNSUPPORTED;\r | |
592 | }\r | |
593 | if (BusClockFreq) {\r | |
594 | Status = DwEmmcSetClock (BusClockFreq);\r | |
595 | }\r | |
596 | return Status;\r | |
597 | }\r | |
598 | \r | |
599 | BOOLEAN\r | |
600 | DwEmmcIsMultiBlock (\r | |
601 | IN EFI_MMC_HOST_PROTOCOL *This\r | |
602 | )\r | |
603 | {\r | |
604 | return TRUE;\r | |
605 | }\r | |
606 | \r | |
607 | EFI_MMC_HOST_PROTOCOL gMciHost = {\r | |
608 | MMC_HOST_PROTOCOL_REVISION,\r | |
609 | DwEmmcIsCardPresent,\r | |
610 | DwEmmcIsReadOnly,\r | |
611 | DwEmmcBuildDevicePath,\r | |
612 | DwEmmcNotifyState,\r | |
613 | DwEmmcSendCommand,\r | |
614 | DwEmmcReceiveResponse,\r | |
615 | DwEmmcReadBlockData,\r | |
616 | DwEmmcWriteBlockData,\r | |
617 | DwEmmcSetIos,\r | |
618 | DwEmmcIsMultiBlock\r | |
619 | };\r | |
620 | \r | |
621 | EFI_STATUS\r | |
622 | DwEmmcDxeInitialize (\r | |
623 | IN EFI_HANDLE ImageHandle,\r | |
624 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
625 | )\r | |
626 | {\r | |
627 | EFI_STATUS Status;\r | |
628 | EFI_HANDLE Handle;\r | |
629 | \r | |
630 | Handle = NULL;\r | |
631 | \r | |
632 | gpIdmacDesc = (DWEMMC_IDMAC_DESCRIPTOR *)AllocatePages (DWEMMC_MAX_DESC_PAGES);\r | |
633 | if (gpIdmacDesc == NULL) {\r | |
634 | return EFI_BUFFER_TOO_SMALL;\r | |
635 | }\r | |
636 | \r | |
637 | DEBUG ((DEBUG_BLKIO, "DwEmmcDxeInitialize()\n"));\r | |
638 | \r | |
639 | //Publish Component Name, BlockIO protocol interfaces\r | |
640 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
641 | &Handle,\r | |
642 | &gEfiMmcHostProtocolGuid, &gMciHost,\r | |
643 | NULL\r | |
644 | );\r | |
645 | ASSERT_EFI_ERROR (Status);\r | |
646 | \r | |
647 | return EFI_SUCCESS;\r | |
648 | }\r |