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fb0b259e | 1 | /** @file\r |
2 | This file contains two sets of callback routines for undi3.0 and undi3.1.\r | |
3 | the callback routines for Undi3.1 have an extra parameter UniqueId which\r | |
4 | stores the interface context for the NIC that snp is trying to talk.\r | |
5 | \r | |
4cda7726 | 6 | Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r |
5e7e4fad | 7 | All rights reserved. This program and the accompanying materials\r |
8 | are licensed and made available under the terms and conditions of the BSD License\r | |
9 | which accompanies this distribution. The full text of the license may be found at\r | |
10 | http://opensource.org/licenses/bsd-license.php\r | |
11 | \r | |
12 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | \r | |
fb0b259e | 15 | **/\r |
5e7e4fad | 16 | \r |
17 | #include "Snp.h"\r | |
18 | \r | |
19 | //\r | |
20 | // Global variables\r | |
21 | // these 2 global variables are used only for 3.0 undi. we could not place\r | |
22 | // them in the snp structure because we will not know which snp structure\r | |
23 | // in the callback context!\r | |
24 | //\r | |
fe1e36e5 | 25 | BOOLEAN mInitializeLock = TRUE;\r |
26 | EFI_LOCK mLock;\r | |
5e7e4fad | 27 | \r |
28 | //\r | |
29 | // End Global variables\r | |
30 | //\r | |
4cda7726 | 31 | extern EFI_PCI_IO_PROTOCOL *mPciIo;\r |
5e7e4fad | 32 | \r |
4cda7726 | 33 | /**\r |
34 | This is a callback routine supplied to UNDI at undi_start time.\r | |
35 | UNDI call this routine with a virtual or CPU address that SNP provided to \r | |
36 | convert it to a physical or device address. Since EFI uses the identical \r | |
37 | mapping, this routine returns the physical address same as the virtual address\r | |
38 | for most of the addresses. an address above 4GB cannot generally be used as a \r | |
39 | device address, it needs to be mapped to a lower physical address. This \r | |
40 | routine does not call the map routine itself, but it assumes that the mapping\r | |
41 | was done at the time of providing the address to UNDI. This routine just \r | |
42 | looks up the address in a map table (which is the v2p structure chain). \r | |
43 | \r | |
44 | @param CpuAddr virtual address of a buffer.\r | |
45 | @param DeviceAddrPtr pointer to the physical address.\r | |
46 | The DeviceAddrPtr will contain 0 in case of any error.\r | |
47 | \r | |
48 | **/\r | |
5e7e4fad | 49 | VOID\r |
4cda7726 | 50 | SnpUndi32CallbackV2p30 (\r |
5e7e4fad | 51 | IN UINT64 CpuAddr,\r |
52 | IN OUT UINT64 DeviceAddrPtr\r | |
53 | )\r | |
5e7e4fad | 54 | {\r |
4cda7726 | 55 | V2P *V2p;\r |
5e7e4fad | 56 | //\r |
57 | // Do nothing if virtual address is zero or physical pointer is NULL.\r | |
58 | // No need to map if the virtual address is within 4GB limit since\r | |
59 | // EFI uses identical mapping\r | |
60 | //\r | |
61 | if ((CpuAddr == 0) || (DeviceAddrPtr == 0)) {\r | |
4cda7726 | 62 | DEBUG ((EFI_D_NET, "\nv2p: Null virtual address or physical pointer.\n"));\r |
5e7e4fad | 63 | return ;\r |
64 | }\r | |
65 | \r | |
66 | if (CpuAddr < FOUR_GIGABYTES) {\r | |
67 | *(UINT64 *) (UINTN) DeviceAddrPtr = CpuAddr;\r | |
68 | return ;\r | |
69 | }\r | |
70 | //\r | |
71 | // SNP creates a vaddr tp paddr mapping at the time of calling undi with any\r | |
72 | // big address, this callback routine just looks up in the v2p list and\r | |
73 | // returns the physical address for any given virtual address.\r | |
74 | //\r | |
4cda7726 | 75 | if (FindV2p (&V2p, (VOID *) (UINTN) CpuAddr) != EFI_SUCCESS) {\r |
5e7e4fad | 76 | *(UINT64 *) (UINTN) DeviceAddrPtr = CpuAddr;\r |
77 | } else {\r | |
4cda7726 | 78 | *(UINT64 *) (UINTN) DeviceAddrPtr = V2p->PhysicalAddress;\r |
5e7e4fad | 79 | }\r |
80 | }\r | |
81 | \r | |
4cda7726 | 82 | /**\r |
83 | This is a callback routine supplied to UNDI at undi_start time.\r | |
84 | UNDI call this routine when it wants to have exclusive access to a critical\r | |
85 | section of the code/data.\r | |
86 | \r | |
87 | @param Enable non-zero indicates acquire\r | |
88 | zero indicates release\r | |
89 | \r | |
90 | **/\r | |
5e7e4fad | 91 | VOID\r |
4cda7726 | 92 | SnpUndi32CallbackBlock30 (\r |
5e7e4fad | 93 | IN UINT32 Enable\r |
94 | )\r | |
5e7e4fad | 95 | {\r |
96 | //\r | |
97 | // tcpip was calling snp at tpl_notify and if we acquire a lock that was\r | |
98 | // created at a lower level (TPL_CALLBACK) it gives an assert!\r | |
99 | //\r | |
100 | if (mInitializeLock) {\r | |
101 | EfiInitializeLock (&mLock, TPL_NOTIFY);\r | |
102 | mInitializeLock = FALSE;\r | |
103 | }\r | |
104 | \r | |
105 | if (Enable != 0) {\r | |
106 | EfiAcquireLock (&mLock);\r | |
107 | } else {\r | |
108 | EfiReleaseLock (&mLock);\r | |
109 | }\r | |
110 | }\r | |
111 | \r | |
4cda7726 | 112 | /**\r |
113 | This is a callback routine supplied to UNDI at undi_start time.\r | |
114 | UNDI call this routine with the number of micro seconds when it wants to\r | |
115 | pause.\r | |
116 | \r | |
117 | @param MicroSeconds number of micro seconds to pause, ususlly multiple of 10.\r | |
118 | \r | |
119 | **/\r | |
5e7e4fad | 120 | VOID\r |
4cda7726 | 121 | SnpUndi32CallbackDelay30 (\r |
5e7e4fad | 122 | IN UINT64 MicroSeconds\r |
123 | )\r | |
5e7e4fad | 124 | {\r |
125 | if (MicroSeconds != 0) {\r | |
126 | gBS->Stall ((UINTN) MicroSeconds);\r | |
127 | }\r | |
128 | }\r | |
129 | \r | |
4cda7726 | 130 | /**\r |
131 | This is a callback routine supplied to UNDI at undi_start time.\r | |
132 | This is the IO routine for UNDI. This is not currently being used by UNDI3.0\r | |
133 | because Undi3.0 uses io/mem offsets relative to the beginning of the device\r | |
134 | io/mem address and so it needs to use the PCI_IO_FUNCTION that abstracts the\r | |
135 | start of the device's io/mem addresses. Since SNP cannot retrive the context\r | |
136 | of the undi3.0 interface it cannot use the PCI_IO_FUNCTION that specific for\r | |
137 | that NIC and uses one global IO functions structure, this does not work.\r | |
138 | This however works fine for EFI1.0 Undis because they use absolute addresses\r | |
139 | for io/mem access.\r | |
140 | \r | |
141 | @param ReadOrWrite indicates read or write, IO or Memory\r | |
142 | @param NumBytes number of bytes to read or write\r | |
143 | @param Address IO or memory address to read from or write to\r | |
144 | @param BufferAddr memory location to read into or that contains the bytes to \r | |
145 | write\r | |
146 | \r | |
147 | **/\r | |
5e7e4fad | 148 | VOID\r |
4cda7726 | 149 | SnpUndi32CallbackMemio30 (\r |
5e7e4fad | 150 | IN UINT8 ReadOrWrite,\r |
151 | IN UINT8 NumBytes,\r | |
152 | IN UINT64 Address,\r | |
153 | IN OUT UINT64 BufferAddr\r | |
154 | )\r | |
5e7e4fad | 155 | {\r |
156 | EFI_PCI_IO_PROTOCOL_WIDTH Width;\r | |
157 | \r | |
158 | switch (NumBytes) {\r | |
159 | case 2:\r | |
160 | Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 1;\r | |
161 | break;\r | |
162 | \r | |
163 | case 4:\r | |
164 | Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 2;\r | |
165 | break;\r | |
166 | \r | |
167 | case 8:\r | |
168 | Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 3;\r | |
169 | break;\r | |
170 | \r | |
171 | default:\r | |
172 | Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 0;\r | |
173 | }\r | |
174 | \r | |
175 | switch (ReadOrWrite) {\r | |
176 | case PXE_IO_READ:\r | |
4cda7726 | 177 | mPciIo->Io.Read (\r |
178 | mPciIo,\r | |
179 | Width,\r | |
180 | 1, // BAR 1, IO base address\r | |
181 | Address,\r | |
182 | 1, // count\r | |
183 | (VOID *) (UINTN) BufferAddr\r | |
184 | );\r | |
5e7e4fad | 185 | break;\r |
186 | \r | |
187 | case PXE_IO_WRITE:\r | |
4cda7726 | 188 | mPciIo->Io.Write (\r |
189 | mPciIo,\r | |
190 | Width,\r | |
191 | 1, // BAR 1, IO base address\r | |
192 | Address,\r | |
193 | 1, // count\r | |
194 | (VOID *) (UINTN) BufferAddr\r | |
195 | );\r | |
5e7e4fad | 196 | break;\r |
197 | \r | |
198 | case PXE_MEM_READ:\r | |
4cda7726 | 199 | mPciIo->Mem.Read (\r |
200 | mPciIo,\r | |
201 | Width,\r | |
202 | 0, // BAR 0, Memory base address\r | |
203 | Address,\r | |
204 | 1, // count\r | |
205 | (VOID *) (UINTN) BufferAddr\r | |
206 | );\r | |
5e7e4fad | 207 | break;\r |
208 | \r | |
209 | case PXE_MEM_WRITE:\r | |
4cda7726 | 210 | mPciIo->Mem.Write (\r |
211 | mPciIo,\r | |
212 | Width,\r | |
213 | 0, // BAR 0, Memory base address\r | |
214 | Address,\r | |
215 | 1, // count\r | |
216 | (VOID *) (UINTN) BufferAddr\r | |
217 | );\r | |
5e7e4fad | 218 | break;\r |
219 | }\r | |
220 | \r | |
221 | return ;\r | |
222 | }\r | |
4cda7726 | 223 | \r |
224 | /**\r | |
225 | This is a callback routine supplied to UNDI3.1 at undi_start time.\r | |
226 | UNDI call this routine when it wants to have exclusive access to a critical\r | |
227 | section of the code/data.\r | |
228 | New callbacks for 3.1:\r | |
229 | there won't be a virtual2physical callback for UNDI 3.1 because undi3.1 uses\r | |
230 | the MemMap call to map the required address by itself!\r | |
231 | \r | |
232 | @param UniqueId This was supplied to UNDI at Undi_Start, SNP uses this to \r | |
233 | store Undi interface context (Undi does not read or write\r | |
234 | this variable)\r | |
235 | @param Enable non-zero indicates acquire\r | |
236 | zero indicates release\r | |
237 | **/\r | |
5e7e4fad | 238 | VOID\r |
4cda7726 | 239 | SnpUndi32CallbackBlock (\r |
5e7e4fad | 240 | IN UINT64 UniqueId,\r |
241 | IN UINT32 Enable\r | |
242 | )\r | |
5e7e4fad | 243 | {\r |
4cda7726 | 244 | SNP_DRIVER *Snp;\r |
5e7e4fad | 245 | \r |
4cda7726 | 246 | Snp = (SNP_DRIVER *) (UINTN) UniqueId;\r |
5e7e4fad | 247 | //\r |
248 | // tcpip was calling snp at tpl_notify and when we acquire a lock that was\r | |
249 | // created at a lower level (TPL_CALLBACK) it gives an assert!\r | |
250 | //\r | |
251 | if (Enable != 0) {\r | |
4cda7726 | 252 | EfiAcquireLock (&Snp->Lock);\r |
5e7e4fad | 253 | } else {\r |
4cda7726 | 254 | EfiReleaseLock (&Snp->Lock);\r |
5e7e4fad | 255 | }\r |
256 | }\r | |
257 | \r | |
4cda7726 | 258 | /**\r |
259 | This is a callback routine supplied to UNDI at undi_start time.\r | |
260 | UNDI call this routine with the number of micro seconds when it wants to\r | |
261 | pause.\r | |
262 | \r | |
263 | @param UniqueId This was supplied to UNDI at Undi_Start, SNP uses this to\r | |
264 | store Undi interface context (Undi does not read or write\r | |
265 | this variable)\r | |
266 | @param MicroSeconds number of micro seconds to pause, ususlly multiple of 10.\r | |
267 | **/\r | |
5e7e4fad | 268 | VOID\r |
4cda7726 | 269 | SnpUndi32CallbackDelay (\r |
5e7e4fad | 270 | IN UINT64 UniqueId,\r |
271 | IN UINT64 MicroSeconds\r | |
272 | )\r | |
5e7e4fad | 273 | {\r |
274 | if (MicroSeconds != 0) {\r | |
275 | gBS->Stall ((UINTN) MicroSeconds);\r | |
276 | }\r | |
277 | }\r | |
278 | \r | |
4cda7726 | 279 | /**\r |
280 | This is a callback routine supplied to UNDI at undi_start time.\r | |
281 | This is the IO routine for UNDI3.1 to start CPB.\r | |
282 | \r | |
283 | @param UniqueId This was supplied to UNDI at Undi_Start, SNP uses this \r | |
284 | to store Undi interface context (Undi does not read or\r | |
285 | write this variable)\r | |
286 | @param ReadOrWrite indicates read or write, IO or Memory.\r | |
287 | @param NumBytes number of bytes to read or write.\r | |
288 | @param MemOrPortAddr IO or memory address to read from or write to.\r | |
289 | @param BufferPtr memory location to read into or that contains the bytes\r | |
290 | to write.\r | |
291 | **/\r | |
5e7e4fad | 292 | VOID\r |
4cda7726 | 293 | SnpUndi32CallbackMemio (\r |
294 | IN UINT64 UniqueId,\r | |
295 | IN UINT8 ReadOrWrite,\r | |
296 | IN UINT8 NumBytes,\r | |
297 | IN UINT64 MemOrPortAddr,\r | |
298 | IN OUT UINT64 BufferPtr\r | |
5e7e4fad | 299 | )\r |
5e7e4fad | 300 | {\r |
4cda7726 | 301 | SNP_DRIVER *Snp;\r |
5e7e4fad | 302 | EFI_PCI_IO_PROTOCOL_WIDTH Width;\r |
303 | \r | |
4cda7726 | 304 | Snp = (SNP_DRIVER *) (UINTN) UniqueId;\r |
5e7e4fad | 305 | \r |
306 | Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 0;\r | |
307 | switch (NumBytes) {\r | |
308 | case 2:\r | |
309 | Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 1;\r | |
310 | break;\r | |
311 | \r | |
312 | case 4:\r | |
313 | Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 2;\r | |
314 | break;\r | |
315 | \r | |
316 | case 8:\r | |
317 | Width = (EFI_PCI_IO_PROTOCOL_WIDTH) 3;\r | |
318 | break;\r | |
319 | }\r | |
320 | \r | |
321 | switch (ReadOrWrite) {\r | |
322 | case PXE_IO_READ:\r | |
4cda7726 | 323 | Snp->PciIo->Io.Read (\r |
324 | Snp->PciIo,\r | |
325 | Width,\r | |
326 | Snp->IoBarIndex, // BAR 1 (for 32bit regs), IO base address\r | |
327 | MemOrPortAddr,\r | |
328 | 1, // count\r | |
329 | (VOID *) (UINTN) BufferPtr\r | |
330 | );\r | |
5e7e4fad | 331 | break;\r |
332 | \r | |
333 | case PXE_IO_WRITE:\r | |
4cda7726 | 334 | Snp->PciIo->Io.Write (\r |
335 | Snp->PciIo,\r | |
336 | Width,\r | |
337 | Snp->IoBarIndex, // BAR 1 (for 32bit regs), IO base address\r | |
338 | MemOrPortAddr,\r | |
339 | 1, // count\r | |
340 | (VOID *) (UINTN) BufferPtr\r | |
341 | );\r | |
5e7e4fad | 342 | break;\r |
343 | \r | |
344 | case PXE_MEM_READ:\r | |
4cda7726 | 345 | Snp->PciIo->Mem.Read (\r |
346 | Snp->PciIo,\r | |
5e7e4fad | 347 | Width,\r |
4cda7726 | 348 | Snp->MemoryBarIndex, // BAR 0, Memory base address\r |
349 | MemOrPortAddr,\r | |
5e7e4fad | 350 | 1, // count\r |
4cda7726 | 351 | (VOID *) (UINTN) BufferPtr\r |
5e7e4fad | 352 | );\r |
353 | break;\r | |
354 | \r | |
355 | case PXE_MEM_WRITE:\r | |
4cda7726 | 356 | Snp->PciIo->Mem.Write (\r |
357 | Snp->PciIo,\r | |
5e7e4fad | 358 | Width,\r |
4cda7726 | 359 | Snp->MemoryBarIndex, // BAR 0, Memory base address\r |
360 | MemOrPortAddr,\r | |
5e7e4fad | 361 | 1, // count\r |
4cda7726 | 362 | (VOID *) (UINTN) BufferPtr\r |
5e7e4fad | 363 | );\r |
364 | break;\r | |
365 | }\r | |
366 | \r | |
367 | return ;\r | |
368 | }\r | |
369 | \r | |
4cda7726 | 370 | /**\r |
371 | This is a callback routine supplied to UNDI at undi_start time.\r | |
372 | UNDI call this routine when it has to map a CPU address to a device\r | |
373 | address.\r | |
374 | \r | |
375 | @param UniqueId - This was supplied to UNDI at Undi_Start, SNP uses this to store\r | |
376 | Undi interface context (Undi does not read or write this variable)\r | |
377 | @param CpuAddr - Virtual address to be mapped!\r | |
378 | @param NumBytes - size of memory to be mapped\r | |
379 | @param Direction - direction of data flow for this memory's usage:\r | |
380 | cpu->device, device->cpu or both ways\r | |
381 | @param DeviceAddrPtr - pointer to return the mapped device address\r | |
382 | \r | |
383 | **/\r | |
5e7e4fad | 384 | VOID\r |
4cda7726 | 385 | SnpUndi32CallbackMap (\r |
5e7e4fad | 386 | IN UINT64 UniqueId,\r |
387 | IN UINT64 CpuAddr,\r | |
388 | IN UINT32 NumBytes,\r | |
389 | IN UINT32 Direction,\r | |
390 | IN OUT UINT64 DeviceAddrPtr\r | |
391 | )\r | |
5e7e4fad | 392 | {\r |
393 | EFI_PHYSICAL_ADDRESS *DevAddrPtr;\r | |
394 | EFI_PCI_IO_PROTOCOL_OPERATION DirectionFlag;\r | |
395 | UINTN BuffSize;\r | |
4cda7726 | 396 | SNP_DRIVER *Snp;\r |
5e7e4fad | 397 | UINTN Index;\r |
398 | EFI_STATUS Status;\r | |
399 | \r | |
400 | BuffSize = (UINTN) NumBytes;\r | |
4cda7726 | 401 | Snp = (SNP_DRIVER *) (UINTN) UniqueId;\r |
5e7e4fad | 402 | DevAddrPtr = (EFI_PHYSICAL_ADDRESS *) (UINTN) DeviceAddrPtr;\r |
403 | \r | |
404 | if (CpuAddr == 0) {\r | |
405 | *DevAddrPtr = 0;\r | |
406 | return ;\r | |
407 | }\r | |
408 | \r | |
409 | switch (Direction) {\r | |
410 | case TO_AND_FROM_DEVICE:\r | |
411 | DirectionFlag = EfiPciIoOperationBusMasterCommonBuffer;\r | |
412 | break;\r | |
413 | \r | |
414 | case FROM_DEVICE:\r | |
415 | DirectionFlag = EfiPciIoOperationBusMasterWrite;\r | |
416 | break;\r | |
417 | \r | |
418 | case TO_DEVICE:\r | |
419 | DirectionFlag = EfiPciIoOperationBusMasterRead;\r | |
420 | break;\r | |
421 | \r | |
422 | default:\r | |
423 | *DevAddrPtr = 0;\r | |
424 | //\r | |
425 | // any non zero indicates error!\r | |
426 | //\r | |
427 | return ;\r | |
428 | }\r | |
429 | //\r | |
430 | // find an unused map_list entry\r | |
431 | //\r | |
432 | for (Index = 0; Index < MAX_MAP_LENGTH; Index++) {\r | |
4cda7726 | 433 | if (Snp->MapList[Index].VirtualAddress == 0) {\r |
5e7e4fad | 434 | break;\r |
435 | }\r | |
436 | }\r | |
437 | \r | |
438 | if (Index >= MAX_MAP_LENGTH) {\r | |
439 | DEBUG ((EFI_D_INFO, "SNP maplist is FULL\n"));\r | |
440 | *DevAddrPtr = 0;\r | |
441 | return ;\r | |
442 | }\r | |
443 | \r | |
4cda7726 | 444 | Snp->MapList[Index].VirtualAddress = (EFI_PHYSICAL_ADDRESS) CpuAddr;\r |
5e7e4fad | 445 | \r |
4cda7726 | 446 | Status = Snp->PciIo->Map (\r |
447 | Snp->PciIo,\r | |
448 | DirectionFlag,\r | |
449 | (VOID *) (UINTN) CpuAddr,\r | |
450 | &BuffSize,\r | |
451 | DevAddrPtr,\r | |
452 | &(Snp->MapList[Index].MapCookie)\r | |
453 | );\r | |
5e7e4fad | 454 | if (Status != EFI_SUCCESS) {\r |
4cda7726 | 455 | *DevAddrPtr = 0;\r |
456 | Snp->MapList[Index].VirtualAddress = 0;\r | |
5e7e4fad | 457 | }\r |
458 | \r | |
459 | return ;\r | |
460 | }\r | |
461 | \r | |
4cda7726 | 462 | /**\r |
463 | This is a callback routine supplied to UNDI at undi_start time.\r | |
464 | UNDI call this routine when it wants to unmap an address that was previously\r | |
465 | mapped using map callback.\r | |
466 | \r | |
467 | @param UniqueId This was supplied to UNDI at Undi_Start, SNP uses this to store.\r | |
468 | Undi interface context (Undi does not read or write this variable)\r | |
469 | @param CpuAddr Virtual address that was mapped!\r | |
470 | @param NumBytes size of memory mapped\r | |
471 | @param Direction direction of data flow for this memory's usage:\r | |
472 | cpu->device, device->cpu or both ways\r | |
473 | @param DeviceAddr the mapped device address\r | |
474 | \r | |
475 | **/\r | |
5e7e4fad | 476 | VOID\r |
4cda7726 | 477 | SnpUndi32CallbackUnmap (\r |
5e7e4fad | 478 | IN UINT64 UniqueId,\r |
479 | IN UINT64 CpuAddr,\r | |
480 | IN UINT32 NumBytes,\r | |
481 | IN UINT32 Direction,\r | |
482 | IN UINT64 DeviceAddr\r | |
483 | )\r | |
5e7e4fad | 484 | {\r |
4cda7726 | 485 | SNP_DRIVER *Snp;\r |
5e7e4fad | 486 | UINT16 Index;\r |
487 | \r | |
4cda7726 | 488 | Snp = (SNP_DRIVER *) (UINTN) UniqueId;\r |
5e7e4fad | 489 | \r |
490 | for (Index = 0; Index < MAX_MAP_LENGTH; Index++) {\r | |
4cda7726 | 491 | if (Snp->MapList[Index].VirtualAddress == CpuAddr) {\r |
5e7e4fad | 492 | break;\r |
493 | }\r | |
494 | }\r | |
495 | \r | |
496 | if (Index >= MAX_MAP_LENGTH)\r | |
497 | {\r | |
498 | DEBUG ((EFI_D_ERROR, "SNP could not find a mapping, failed to unmap.\n"));\r | |
499 | return ;\r | |
500 | }\r | |
501 | \r | |
4cda7726 | 502 | Snp->PciIo->Unmap (Snp->PciIo, Snp->MapList[Index].MapCookie);\r |
503 | Snp->MapList[Index].VirtualAddress = 0;\r | |
504 | Snp->MapList[Index].MapCookie = NULL;\r | |
5e7e4fad | 505 | return ;\r |
506 | }\r | |
507 | \r | |
4cda7726 | 508 | /**\r |
509 | This is a callback routine supplied to UNDI at undi_start time.\r | |
510 | UNDI call this routine when it wants synchronize the virtual buffer contents\r | |
511 | with the mapped buffer contents. The virtual and mapped buffers need not\r | |
512 | correspond to the same physical memory (especially if the virtual address is\r | |
513 | > 4GB). Depending on the direction for which the buffer is mapped, undi will\r | |
514 | need to synchronize their contents whenever it writes to/reads from the buffer\r | |
515 | using either the cpu address or the device address.\r | |
516 | \r | |
517 | EFI does not provide a sync call, since virt=physical, we sould just do\r | |
518 | the synchronization ourself here!\r | |
519 | \r | |
520 | @param UniqueId This was supplied to UNDI at Undi_Start, SNP uses this to store\r | |
521 | Undi interface context (Undi does not read or write this variable)\r | |
522 | @param CpuAddr Virtual address that was mapped!\r | |
523 | @param NumBytes size of memory mapped.\r | |
524 | @param Direction direction of data flow for this memory's usage:\r | |
525 | cpu->device, device->cpu or both ways.\r | |
526 | @param DeviceAddr the mapped device address.\r | |
527 | \r | |
528 | **/\r | |
5e7e4fad | 529 | VOID\r |
4cda7726 | 530 | SnpUndi32CallbackSync (\r |
531 | IN UINT64 UniqueId,\r | |
532 | IN UINT64 CpuAddr,\r | |
533 | IN UINT32 NumBytes,\r | |
534 | IN UINT32 Direction,\r | |
535 | IN UINT64 DeviceAddr\r | |
5e7e4fad | 536 | )\r |
5e7e4fad | 537 | {\r |
538 | if ((CpuAddr == 0) || (DeviceAddr == 0) || (NumBytes == 0)) {\r | |
539 | return ;\r | |
540 | \r | |
541 | }\r | |
542 | \r | |
543 | switch (Direction) {\r | |
544 | case FROM_DEVICE:\r | |
545 | CopyMem ((UINT8 *) (UINTN) CpuAddr, (UINT8 *) (UINTN) DeviceAddr, NumBytes);\r | |
546 | break;\r | |
547 | \r | |
548 | case TO_DEVICE:\r | |
549 | CopyMem ((UINT8 *) (UINTN) DeviceAddr, (UINT8 *) (UINTN) CpuAddr, NumBytes);\r | |
550 | break;\r | |
551 | }\r | |
552 | \r | |
553 | return ;\r | |
554 | }\r |