ReactOS  0.4.15-dev-994-ga9f6032
id_dma.cpp
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1 /*++
2 
3 Copyright (c) 2002-2016 Alexander A. Telyatnikov (Alter)
4 
5 Module Name:
6  id_dma.cpp
7 
8 Abstract:
9  This is the miniport driver for ATAPI IDE controllers
10  With Busmaster DMA support
11 
12 Author:
13  Alexander A. Telyatnikov (Alter)
14 
15 Environment:
16  kernel mode only
17 
18 Notes:
19 
20  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 
31 Revision History:
32 
33  This module is a port from FreeBSD 4.3-6.1 ATA driver (ata-dma.c, ata-chipset.c) by
34  Søren Schmidt, Copyright (c) 1998-2008
35 
36  Changed defaulting-to-generic-PIO/DMA policy
37  Added PIO settings for VIA
38  Optimized VIA/AMD/nVidia init part
39  Optimized Promise TX2 init part
40  Optimized Intel init part
41  by Alex A. Telyatnikov (Alter) (c) 2002-2007
42 
43 Licence:
44  GPLv2
45 
46 
47 --*/
48 
49 #include "stdafx.h"
50 
51 static const ULONG valid_udma[7] = {0,0,2,0,4,5,6};
52 
53 static const CHAR retry_Wdma[MAX_RETRIES+1] = {2, 2, 2,-1,-1,-1};
54 static const CHAR retry_Udma[MAX_RETRIES+1] = {6, 2,-1,-1,-1,-1};
55 
56 PHYSICAL_ADDRESS ph4gb = {{0xFFFFFFFF, 0}};
57 
58 VOID
59 NTAPI
60 cyrix_timing (
61  IN PHW_DEVICE_EXTENSION deviceExtension,
62  IN ULONG dev, // physical device number (0-3)
63  IN CHAR mode
64  );
65 
66 VOID
67 NTAPI
68 promise_timing (
69  IN PHW_DEVICE_EXTENSION deviceExtension,
70  IN ULONG dev, // physical device number (0-3)
71  IN CHAR mode
72  );
73 
74 VOID
75 NTAPI
76 hpt_timing (
77  IN PHW_DEVICE_EXTENSION deviceExtension,
78  IN ULONG dev, // physical device number (0-3)
79  IN CHAR mode
80  );
81 
82 VOID
83 NTAPI
84 via82c_timing (
85  IN PHW_DEVICE_EXTENSION deviceExtension,
86  IN ULONG dev, // physical device number (0-3)
87  IN CHAR mode
88  );
89 
90 ULONG
91 NTAPI
92 hpt_cable80(
93  IN PHW_DEVICE_EXTENSION deviceExtension,
94  IN ULONG channel // physical channel number (0-1)
95  );
96 
97 ULONG
98 NTAPI
99 AtapiVirtToPhysAddr_(
100  IN PVOID HwDeviceExtension,
101  IN PSCSI_REQUEST_BLOCK Srb,
102  IN PUCHAR data,
103  OUT PULONG count, /* bytes */
104  OUT PULONG ph_addru
105  )
106 {
107  PHYSICAL_ADDRESS ph_addr;
108  ULONG addr;
109 
110  *(volatile char*)data; // Touch memory, this will prevent condition of not-ready page table for valid addresses
111  // See ROS-11894 bug
112  ph_addr = MmGetPhysicalAddress(data);
113  KdPrint3((PRINT_PREFIX "AtapiVirtToPhysAddr_: %x -> %8.8x:%8.8x\n", data, ph_addr.HighPart, ph_addr.LowPart));
114  if(!ph_addru && ph_addr.HighPart) {
115  // do so until we add 64bit address support
116  // or some workaround
117  *count = 0;
118  return -1;
119  }
120 
121  (*ph_addru) = ph_addr.HighPart;
122  //addr = ScsiPortConvertPhysicalAddressToUlong(ph_addr);
123  addr = ph_addr.LowPart;
124  if(!addr && !ph_addr.HighPart) {
125  *count = 0;
126  return 0;
127  }
128  if(!Srb) {
129  *count = sizeof(BM_DMA_ENTRY)*ATA_DMA_ENTRIES;
130  } else {
131  *count = PAGE_SIZE - (addr & (PAGE_SIZE-1));
132  }
133  return addr;
134 } // end AtapiVirtToPhysAddr_()
135 
136 VOID
137 NTAPI
138 AtapiDmaAlloc(
139  IN PVOID HwDeviceExtension,
140  IN PPORT_CONFIGURATION_INFORMATION ConfigInfo,
141  IN ULONG lChannel // logical channel,
142  )
143 {
144 #ifdef USE_OWN_DMA
145  PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
146  PHW_CHANNEL chan = &(deviceExtension->chan[lChannel]);
147  ULONG c = lChannel;
148  ULONG i;
149  ULONG ph_addru;
150 
151  deviceExtension->chan[c].CopyDmaBuffer = FALSE;
152 
153  if(!deviceExtension->Host64 && (WinVer_Id() > WinVer_NT)) {
154  KdPrint2((PRINT_PREFIX "AtapiDmaAlloc: allocate tmp buffers below 4Gb\n"));
155  if(chan->DB_PRD) {
156  KdPrint2((PRINT_PREFIX " already initialized %x\n", chan->DB_PRD));
157  return;
158  }
159  chan->DB_PRD = MmAllocateContiguousMemory(sizeof(((PATA_REQ)NULL)->dma_tab), ph4gb);
160  if(chan->DB_PRD) {
161  chan->DB_PRD_PhAddr = AtapiVirtToPhysAddr(HwDeviceExtension, NULL, (PUCHAR)(chan->DB_PRD), &i, &ph_addru);
162  if(!chan->DB_PRD_PhAddr || !i || ((LONG)(chan->DB_PRD_PhAddr) == -1)) {
163  KdPrint2((PRINT_PREFIX "AtapiDmaAlloc: No DB PRD BASE\n" ));
164  chan->DB_PRD = NULL;
165  chan->DB_PRD_PhAddr = 0;
166  return;
167  }
168  if(ph_addru) {
169  KdPrint2((PRINT_PREFIX "AtapiDmaAlloc: No DB PRD below 4Gb\n" ));
170  goto err_1;
171  }
172  }
173  chan->DB_IO = MmAllocateContiguousMemory(deviceExtension->MaximumDmaTransferLength, ph4gb);
174  if(chan->DB_IO) {
175  chan->DB_IO_PhAddr = AtapiVirtToPhysAddr(HwDeviceExtension, NULL, (PUCHAR)(chan->DB_IO), &i, &ph_addru);
176  if(!chan->DB_IO_PhAddr || !i || ((LONG)(chan->DB_IO_PhAddr) == -1)) {
177  KdPrint2((PRINT_PREFIX "AtapiDmaAlloc: No DB IO BASE\n" ));
178 err_1:
179  MmFreeContiguousMemory(chan->DB_PRD);
180  chan->DB_PRD = NULL;
181  chan->DB_PRD_PhAddr = 0;
182  chan->DB_IO = NULL;
183  chan->DB_IO_PhAddr = 0;
184  return;
185  }
186  if(ph_addru) {
187  KdPrint2((PRINT_PREFIX "AtapiDmaAlloc: No DB IO below 4Gb\n" ));
188  MmFreeContiguousMemory(chan->DB_IO);
189  goto err_1;
190  }
191  }
192  }
193 
194 
195  if(deviceExtension->HwFlags & UNIATA_AHCI) {
196  KdPrint2((PRINT_PREFIX "AtapiDmaAlloc: AHCI\n" ));
197  if(chan->AhciCtlBlock) {
198  KdPrint2((PRINT_PREFIX " already initialized %x\n", chan->AhciCtlBlock));
199  return;
200  }
201  // Need 1K-byte alignment
202  chan->AhciCtlBlock0 = (PIDE_AHCI_CHANNEL_CTL_BLOCK)MmAllocateContiguousMemory(
203  sizeof(IDE_AHCI_CHANNEL_CTL_BLOCK)+AHCI_CLB_ALIGNEMENT_MASK,
204  ph4gb);
205  if(chan->AhciCtlBlock0) {
206  union {
207  PUCHAR AhciCtlBlock;
208  ULONGLONG AhciCtlBlock64;
209  };
210  AhciCtlBlock64 = 0;
211  AhciCtlBlock = (PUCHAR)chan->AhciCtlBlock0;
212 
213  KdPrint2((PRINT_PREFIX "AtapiDmaAlloc: CLP BASE %I64x\n", AhciCtlBlock64));
214 
215  AhciCtlBlock64 += AHCI_CLB_ALIGNEMENT_MASK;
216  AhciCtlBlock64 &= ~AHCI_CLB_ALIGNEMENT_MASK;
217 
218  KdPrint2((PRINT_PREFIX "AtapiDmaAlloc: CLP BASE 1k-aligned %I64x\n", AhciCtlBlock64));
219 
220  chan->AhciCtlBlock = (PIDE_AHCI_CHANNEL_CTL_BLOCK)AhciCtlBlock;
221 
222  chan->AHCI_CTL_PhAddr = AtapiVirtToPhysAddr(HwDeviceExtension, NULL, (PUCHAR)(chan->AhciCtlBlock), &i, &ph_addru);
223  KdPrint2((PRINT_PREFIX "AtapiDmaAlloc: CLP Phys BASE %I64x\n", chan->AHCI_CTL_PhAddr));
224  if(!chan->AHCI_CTL_PhAddr || !i || ((LONG)(chan->AHCI_CTL_PhAddr) == -1)) {
225  KdPrint2((PRINT_PREFIX "AtapiDmaAlloc: No AHCI CLP BASE\n" ));
226  chan->AhciCtlBlock = NULL;
227  chan->AHCI_CTL_PhAddr = 0;
228  return;
229  }
230  if(ph_addru) {
231  KdPrint2((PRINT_PREFIX "AtapiDmaAlloc: No AHCI CLP below 4Gb\n" ));
232  MmFreeContiguousMemory(chan->AhciCtlBlock0);
233  chan->AhciCtlBlock = NULL;
234  chan->AHCI_CTL_PhAddr = 0;
235  return;
236  }
237  } else {
238  KdPrint2((PRINT_PREFIX "AtapiDmaAlloc: Can't alloc AHCI CLP\n"));
239  }
240  }
241 #endif //USE_OWN_DMA
242  return;
243 } // end AtapiDmaAlloc()
244 
245 BOOLEAN
246 NTAPI
247 AtapiDmaSetup(
248  IN PVOID HwDeviceExtension,
249  IN ULONG DeviceNumber,
250  IN ULONG lChannel, // logical channel,
251  IN PSCSI_REQUEST_BLOCK Srb,
252  IN PUCHAR data,
253  IN ULONG count /* bytes */
254  )
255 {
256  PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
257  ULONG dma_count, dma_base, dma_baseu;
258  ULONG dma_count0, dma_base0;
259  ULONG i;
260  PHW_CHANNEL chan = &(deviceExtension->chan[lChannel]);
261  PATA_REQ AtaReq = (PATA_REQ)(Srb->SrbExtension);
262  BOOLEAN use_DB_IO = FALSE;
263  BOOLEAN use_AHCI = (deviceExtension->HwFlags & UNIATA_AHCI) ? TRUE : FALSE;
264  ULONG orig_count = count;
265  ULONG max_entries = use_AHCI ? ATA_AHCI_DMA_ENTRIES : ATA_DMA_ENTRIES;
266  //ULONG max_frag = use_AHCI ? (0x3fffff+1) : (4096); // DEBUG, replace 4096 for proper chipset-specific value
267  ULONG max_frag = deviceExtension->DmaSegmentLength;
268  ULONG seg_align = deviceExtension->DmaSegmentAlignmentMask;
269 
270  if(AtaReq->dma_entries) {
271  AtaReq->Flags |= REQ_FLAG_DMA_OPERATION;
272  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: already setup, %d entries\n", AtaReq->dma_entries));
273  return TRUE;
274  }
275  AtaReq->ata.dma_base = 0;
276  AtaReq->Flags &= ~REQ_FLAG_DMA_OPERATION;
277 
278  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: mode %#x, data %x, count %x, lCh %x, dev %x\n",
279  chan->lun[DeviceNumber]->TransferMode,
280  data, count, lChannel, DeviceNumber ));
281  if(chan->lun[DeviceNumber]->TransferMode < ATA_DMA) {
282  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: Not DMA mode, assume this is just preparation\n" ));
283  //return FALSE;
284  }
285  //KdPrint2((PRINT_PREFIX " checkpoint 1\n" ));
286  if(!count) {
287  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: count=0\n" ));
288  return FALSE;
289  }
290  //KdPrint2((PRINT_PREFIX " checkpoint 2\n" ));
291  if(count > deviceExtension->MaximumDmaTransferLength) {
292  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: deviceExtension->MaximumDmaTransferLength > count\n" ));
293  return FALSE;
294  }
295  //KdPrint2((PRINT_PREFIX " checkpoint 3\n" ));
296  if((ULONG_PTR)data & deviceExtension->AlignmentMask) {
297  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: unaligned data: %#x (%#x)\n", data, deviceExtension->AlignmentMask));
298  return FALSE;
299  }
300 
301  //KdPrint2((PRINT_PREFIX " checkpoint 4\n" ));
302  if(use_AHCI) {
303  KdPrint2((PRINT_PREFIX " get Phys(AHCI_CMD=%x)\n", AtaReq->ahci.ahci_cmd_ptr ));
304  dma_base = AtapiVirtToPhysAddr(HwDeviceExtension, NULL, (PUCHAR)(AtaReq->ahci.ahci_cmd_ptr), &i, &dma_baseu);
305  AtaReq->ahci.ahci_base64 = 0; // clear before setup
306  } else {
307  KdPrint2((PRINT_PREFIX " get Phys(PRD=%x)\n", &(AtaReq->dma_tab) ));
308  dma_base = AtapiVirtToPhysAddr(HwDeviceExtension, NULL, (PUCHAR)&(AtaReq->dma_tab) /*chan->dma_tab*/, &i, &dma_baseu);
309  }
310  if(dma_baseu && i) {
311  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: SRB built-in PRD above 4Gb: %8.8x%8.8x\n", dma_baseu, dma_base));
312  if(!deviceExtension->Host64) {
313  dma_base = chan->DB_PRD_PhAddr;
314  AtaReq->Flags |= REQ_FLAG_DMA_DBUF_PRD;
315  i = 1;
316  }
317  } else
318  if(!dma_base || !i || ((LONG)(dma_base) == -1)) {
319  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: No BASE\n" ));
320  return FALSE;
321  }
322  AtaReq->ata.dma_base = dma_base; // aliased to AtaReq->ahci.ahci_base64
323 
324  KdPrint2((PRINT_PREFIX " get Phys(data[0]=%x)\n", data ));
325  dma_base = AtapiVirtToPhysAddr(HwDeviceExtension, Srb, data, &dma_count, &dma_baseu);
326  if(dma_baseu && dma_count) {
327  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: 1st block of buffer above 4Gb: %8.8x%8.8x cnt=%x\n", dma_baseu, dma_base, dma_count));
328  if(!deviceExtension->Host64) {
329 retry_DB_IO:
330  use_DB_IO = TRUE;
331  dma_base = chan->DB_IO_PhAddr;
332  data = (PUCHAR)(chan->DB_IO);
333  } else {
334  AtaReq->ahci.ahci_base64 = (ULONGLONG)dma_base | ((ULONGLONG)dma_baseu << 32);
335  }
336  } else
337  if(!dma_count || ((LONG)(dma_base) == -1)) {
338  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: No 1st block\n" ));
339  //AtaReq->dma_base = NULL;
340  AtaReq->ahci.ahci_base64 = NULL;
341  return FALSE;
342  }
343 
344  dma_count = min(count, (PAGE_SIZE - ((ULONG_PTR)data & PAGE_MASK)));
345  data += dma_count;
346  count -= dma_count;
347  i = 0;
348 
349  dma_count0 = dma_count;
350  dma_base0 = dma_base;
351 
352  while (count) {
353 /* KdPrint2((PRINT_PREFIX " segments %#x+%#x == %#x && %#x+%#x <= %#x\n",
354  dma_base0, dma_count0, dma_base,
355  dma_count0, dma_count, max_frag));*/
356  if(dma_base0+dma_count0 == dma_base &&
357  dma_count0+dma_count <= max_frag) {
358  // 'i' should be always > 0 here
359  // for BM we cannot cross 64k boundary
360  if(dma_base & seg_align) {
361  //KdPrint2((PRINT_PREFIX " merge segments\n" ));
362  ASSERT(i);
363  //BrutePoint();
364  i--;
365  dma_base = dma_base0;
366  dma_count += dma_count0;
367  }
368  }
369  if(use_AHCI) {
370  AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].base = dma_base;
371  AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].baseu = dma_baseu;
372  AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].Reserved1 = 0;
373  *((PULONG)&(AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].DBC_ULONG)) = ((dma_count-1) & 0x3fffff);
374 /* AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].Reserved2 = 0;
375  AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].I = 0;*/
376  KdPrint2((PRINT_PREFIX " ph data[%d]=%x:%x (%x)\n", i, dma_baseu, dma_base, AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].DBC));
377  } else {
378  AtaReq->dma_tab[i].base = dma_base;
379  AtaReq->dma_tab[i].count = (dma_count & 0xffff);
380  }
381  dma_count0 = dma_count;
382  dma_base0 = dma_base;
383  i++;
384  if (i >= max_entries) {
385  KdPrint2((PRINT_PREFIX "too many segments in DMA table\n" ));
386  //AtaReq->dma_base = NULL;
387  AtaReq->ahci.ahci_base64 = NULL;
388  return FALSE;
389  }
390  KdPrint2((PRINT_PREFIX " get Phys(data[n=%d+%x]=%x)\n", i, dma_count0, data ));
391  dma_base = AtapiVirtToPhysAddr(HwDeviceExtension, Srb, data, &dma_count, &dma_baseu);
392  if(dma_baseu && dma_count) {
393  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: block of buffer above 4Gb: %8.8x%8.8x, cnt=%x\n", dma_baseu, dma_base, dma_count));
394  if(!deviceExtension->Host64) {
395  if(use_DB_IO) {
396  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: *ERROR* special buffer above 4Gb: %8.8x%8.8x\n", dma_baseu, dma_base));
397  return FALSE;
398  }
399  count = orig_count;
400  goto retry_DB_IO;
401  }
402  } else
403  if(!dma_count || !dma_base || ((LONG)(dma_base) == -1)) {
404  //AtaReq->dma_base = NULL;
405  AtaReq->ahci.ahci_base64 = 0;
406  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: No NEXT block\n" ));
407  return FALSE;
408  }
409 
410  dma_count = min(count, PAGE_SIZE);
411  data += min(count, PAGE_SIZE);
412  count -= min(count, PAGE_SIZE);
413  }
414  KdPrint2((PRINT_PREFIX " set TERM\n" ));
415 /* KdPrint2((PRINT_PREFIX " segments %#x+%#x == %#x && #x+%#x <= %#x\n",
416  dma_base0, dma_count0, dma_base,
417  dma_count0, dma_count, max_frag));*/
418  if(dma_base0+dma_count0 == dma_base &&
419  dma_count0+dma_count <= max_frag) {
420  // 'i' should be always > 0 here
421  if(dma_base & seg_align) {
422  //KdPrint2((PRINT_PREFIX " merge segments\n" ));
423  //BrutePoint();
424  ASSERT(i);
425  i--;
426  dma_base = dma_base0;
427  dma_count += dma_count0;
428  }
429  }
430  if(use_AHCI) {
431  AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].base = dma_base;
432  AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].baseu = dma_baseu;
433  AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].Reserved1 = 0;
434  //AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].DBC = ((dma_count-1) & 0x3fffff);
435  //AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].Reserved2 = 0;
436  *((PULONG)&(AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].DBC_ULONG)) = ((dma_count-1) & 0x3fffff);
437  //AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].I = 1; // interrupt when ready
438  KdPrint2((PRINT_PREFIX " ph data[%d]=%x:%x (%x)\n", i, dma_baseu, dma_base, AtaReq->ahci.ahci_cmd_ptr->prd_tab[i].DBC));
439  if(((ULONG_PTR)&(AtaReq->ahci.ahci_cmd_ptr->prd_tab) & ~PAGE_MASK) != ((ULONG_PTR)&(AtaReq->ahci.ahci_cmd_ptr->prd_tab[i]) & ~PAGE_MASK)) {
440  KdPrint2((PRINT_PREFIX "PRD table crosses page boundary! %x vs %x\n",
441  &AtaReq->ahci.ahci_cmd_ptr->prd_tab, &(AtaReq->ahci.ahci_cmd_ptr->prd_tab[i]) ));
442  //AtaReq->Flags |= REQ_FLAG_DMA_DBUF_PRD;
443  }
444  } else {
445  AtaReq->dma_tab[i].base = dma_base;
446  AtaReq->dma_tab[i].count = (dma_count & 0xffff) | ATA_DMA_EOT;
447  if(((ULONG_PTR)&(AtaReq->dma_tab) & ~PAGE_MASK) != ((ULONG_PTR)&(AtaReq->dma_tab[i]) & ~PAGE_MASK)) {
448  KdPrint2((PRINT_PREFIX "DMA table crosses page boundary! %x vs %x\n",
449  &AtaReq->dma_tab, &(AtaReq->dma_tab[i]) ));
450  //AtaReq->Flags |= REQ_FLAG_DMA_DBUF_PRD;
451  }
452  }
453  AtaReq->dma_entries = i+1;
454 
455  if(use_DB_IO) {
456  AtaReq->Flags |= REQ_FLAG_DMA_DBUF;
457  }
458  AtaReq->Flags |= REQ_FLAG_DMA_OPERATION;
459 
460  KdPrint2((PRINT_PREFIX "AtapiDmaSetup: OK\n" ));
461  return TRUE;
462 
463 } // end AtapiDmaSetup()
464 
465 BOOLEAN
466 NTAPI
467 AtapiDmaPioSync(
468  PVOID HwDeviceExtension,
469  PSCSI_REQUEST_BLOCK Srb,
470  PUCHAR data,
471  ULONG count
472  )
473 {
474 #ifndef USE_OWN_DMA
475  PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
476  ULONG dma_base;
477  PUCHAR DmaBuffer;
478  ULONG dma_count;
479  ULONG len;
480  PATA_REQ AtaReq;
481 
482  // This must never be called after DMA operation !!!
483  KdPrint2((PRINT_PREFIX "AtapiDmaPioSync: data %#x, len %#x\n", data, count));
484 
485  if(!Srb) {
486  KdPrint2((PRINT_PREFIX "AtapiDmaPioSync: !Srb\n" ));
487  return FALSE;
488  }
489 
490  AtaReq = (PATA_REQ)(Srb->SrbExtension);
491 
492  // do nothing on PCI (This can be changed. We cannot guarantee,
493  // that CommonBuffer will always point to User's buffer,
494  // however, this usually happens on PCI-32)
495  if(deviceExtension->OrigAdapterInterfaceType == PCIBus) {
496  return TRUE;
497  }
498  // do nothing for DMA
499  if(AtaReq->Flags & REQ_FLAG_DMA_OPERATION) {
500  return TRUE;
501  }
502 
503  if(!data) {
504  KdPrint2((PRINT_PREFIX "AtapiDmaPioSync: !data\n" ));
505  return FALSE;
506  }
507 
508  while(count) {
509  dma_base = AtapiVirtToPhysAddr(HwDeviceExtension, Srb, data, &dma_count);
510  if(!dma_base) {
511  KdPrint2((PRINT_PREFIX "AtapiDmaPioSync: !dma_base for data %#x\n", data));
512  return FALSE;
513  }
514  DmaBuffer = (PUCHAR)ScsiPortGetVirtualAddress(HwDeviceExtension,
515  ScsiPortConvertUlongToPhysicalAddress(dma_base));
516  if(!DmaBuffer) {
517  KdPrint2((PRINT_PREFIX "AtapiDmaPioSync: !DmaBuffer for dma_base %#x\n", dma_base));
518  return FALSE;
519  }
520  len = min(dma_count, count);
521  memcpy(DmaBuffer, data, len);
522  count -= len;
523  data += len;
524  }
525 #endif //USE_OWN_DMA
526 
527  return TRUE;
528 } // end AtapiDmaPioSync()
529 
530 BOOLEAN
531 NTAPI
532 AtapiDmaDBSync(
533  PHW_CHANNEL chan,
534  PSCSI_REQUEST_BLOCK Srb
535  )
536 {
537  PATA_REQ AtaReq;
538 
539  AtaReq = (PATA_REQ)(Srb->SrbExtension);
540  if((Srb->SrbFlags & SRB_FLAGS_DATA_IN) &&
541  (AtaReq->Flags & REQ_FLAG_DMA_DBUF)) {
542  KdPrint2((PRINT_PREFIX " AtapiDmaDBSync is issued.\n"));
543  ASSERT(FALSE);
544  KdPrint2((PRINT_PREFIX " DBUF (Read)\n"));
545  RtlCopyMemory(AtaReq->DataBuffer, chan->DB_IO,
546  Srb->DataTransferLength);
547  }
548  return TRUE;
549 } // end AtapiDmaDBSync()
550 
551 BOOLEAN
552 NTAPI
553 AtapiDmaDBPreSync(
554  IN PVOID HwDeviceExtension,
555  PHW_CHANNEL chan,
556  PSCSI_REQUEST_BLOCK Srb
557  )
558 {
559  PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
560  PATA_REQ AtaReq = (PATA_REQ)(Srb->SrbExtension);
561 
562  if(!AtaReq->ata.dma_base) {
563  KdPrint2((PRINT_PREFIX "AtapiDmaDBPreSync: *** !AtaReq->ata.dma_base\n"));
564  return FALSE;
565  }
566 // GetStatus(chan, statusByte2);
567  if(AtaReq->Flags & REQ_FLAG_DMA_DBUF_PRD) {
568  KdPrint2((PRINT_PREFIX " DBUF_PRD\n"));
569  ASSERT(FALSE);
570  if(deviceExtension->HwFlags & UNIATA_AHCI) {
571  RtlCopyMemory(chan->DB_PRD, AtaReq->ahci.ahci_cmd_ptr, sizeof(AtaReq->ahci_cmd0));
572  } else {
573  RtlCopyMemory(chan->DB_PRD, &(AtaReq->dma_tab), sizeof(AtaReq->dma_tab));
574  }
575  }
576  if(!(Srb->SrbFlags & SRB_FLAGS_DATA_IN) &&
577  (AtaReq->Flags & REQ_FLAG_DMA_DBUF)) {
578  KdPrint2((PRINT_PREFIX " DBUF (Write)\n"));
579  ASSERT(FALSE);
580  RtlCopyMemory(chan->DB_IO, AtaReq->DataBuffer,
581  Srb->DataTransferLength);
582  }
583  return TRUE;
584 } // end AtapiDmaDBPreSync()
585 
586 VOID
587 NTAPI
588 AtapiDmaStart(
589  IN PVOID HwDeviceExtension,
590  IN ULONG DeviceNumber,
591  IN ULONG lChannel, // logical channel,
592  IN PSCSI_REQUEST_BLOCK Srb
593  )
594 {
595  PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
596  //PIDE_BUSMASTER_REGISTERS BaseIoAddressBM = deviceExtension->BaseIoAddressBM[lChannel];
597  PATA_REQ AtaReq = (PATA_REQ)(Srb->SrbExtension);
598  PHW_CHANNEL chan = &deviceExtension->chan[lChannel];
599 
600  ULONG VendorID = deviceExtension->DevID & 0xffff;
601  ULONG ChipType = deviceExtension->HwFlags & CHIPTYPE_MASK;
602 // UCHAR statusByte2;
603 /*
604  GetStatus(chan, statusByte2);
605  KdPrint2((PRINT_PREFIX "AtapiDmaStart: %s on %#x:%#x\n",
606  (Srb->SrbFlags & SRB_FLAGS_DATA_IN) ? "read" : "write",
607  lChannel, DeviceNumber ));
608 */
609  if(!AtaReq->ata.dma_base) {
610  KdPrint2((PRINT_PREFIX "AtapiDmaStart: *** !AtaReq->ata.dma_base\n"));
611  return;
612  }
613  KdPrint2((PRINT_PREFIX "AtapiDmaStart: lchan=%d\n", lChannel));
614 
615 /*
616 // GetStatus(chan, statusByte2);
617  if(AtaReq->Flags & REQ_FLAG_DMA_DBUF_PRD) {
618  KdPrint2((PRINT_PREFIX " DBUF_PRD\n"));
619  ASSERT(FALSE);
620  if(deviceExtension->HwFlags & UNIATA_AHCI) {
621  RtlCopyMemory(chan->DB_PRD, AtaReq->ahci.ahci_cmd_ptr, sizeof(AtaReq->ahci_cmd0));
622  } else {
623  RtlCopyMemory(chan->DB_PRD, &(AtaReq->dma_tab), sizeof(AtaReq->dma_tab));
624  }
625  }
626  if(!(Srb->SrbFlags & SRB_FLAGS_DATA_IN) &&
627  (AtaReq->Flags & REQ_FLAG_DMA_DBUF)) {
628  KdPrint2((PRINT_PREFIX " DBUF (Write)\n"));
629  ASSERT(FALSE);
630  RtlCopyMemory(chan->DB_IO, AtaReq->DataBuffer,
631  Srb->DataTransferLength);
632  }
633 */
634  // set flag
635  chan->ChannelCtrlFlags |= CTRFLAGS_DMA_ACTIVE;
636 
637  switch(VendorID) {
638  case ATA_PROMISE_ID:
639  if(ChipType == PRNEW) {
640  ULONG Channel = deviceExtension->Channel + lChannel;
641 
642  if(chan->ChannelCtrlFlags & CTRFLAGS_LBA48) {
643  AtapiWritePortEx4(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),(Channel ? 0x24 : 0x20),
644  ((Srb->SrbFlags & SRB_FLAGS_DATA_IN) ? 0x05000000 : 0x06000000) | (Srb->DataTransferLength >> 1)
645  );
646  }
647 /*
648  } else
649  if(deviceExtension->MemIo) {
650  // begin transaction
651  AtapiWritePort4(chan,
652  IDX_BM_Command,
653  (AtapiReadPort4(chan,
654  IDX_BM_Command) & ~0x000000c0) |
655  ((Srb->SrbFlags & SRB_FLAGS_DATA_IN) ? 0x00000080 : 0x000000c0) );
656  return;
657 */
658  }
659  break;
660  }
661 
662  // set pointer to Pointer Table
663  AtapiWritePort4(chan, IDX_BM_PRD_Table,
664  AtaReq->ata.dma_base
665  );
666  // set transfer direction
667  AtapiWritePort1(chan, IDX_BM_Command,
668  (Srb->SrbFlags & SRB_FLAGS_DATA_IN) ? BM_COMMAND_READ : BM_COMMAND_WRITE);
669  // clear Error & Intr bits (writeing 1 clears bits)
670  // set DMA capability bit
671  AtapiWritePort1(chan, IDX_BM_Status,
672  AtapiReadPort1(chan, IDX_BM_Status) |
673  (BM_STATUS_INTR | BM_STATUS_ERR) /*|
674  (DeviceNumber ? BM_STATUS_DRIVE_1_DMA : BM_STATUS_DRIVE_0_DMA)*/);
675  // begin transaction
676  AtapiWritePort1(chan, IDX_BM_Command,
677  AtapiReadPort1(chan, IDX_BM_Command) |
678  BM_COMMAND_START_STOP);
679  return;
680 
681 } // end AtapiDmaStart()
682 
683 UCHAR
684 NTAPI
685 AtapiDmaDone(
686  IN PVOID HwDeviceExtension,
687  IN ULONG DeviceNumber,
688  IN ULONG lChannel, // logical channel,
689  IN PSCSI_REQUEST_BLOCK Srb
690  )
691 {
692  PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
693  //PIDE_BUSMASTER_REGISTERS BaseIoAddressBM = deviceExtension->BaseIoAddressBM[lChannel];
694  PHW_CHANNEL chan = &deviceExtension->chan[lChannel];
695  UCHAR dma_status;
696 
697  ULONG VendorID = deviceExtension->DevID & 0xffff;
698  ULONG ChipType = deviceExtension->HwFlags & CHIPTYPE_MASK;
699 
700  KdPrint2((PRINT_PREFIX "AtapiDmaDone: dev %d\n", DeviceNumber));
701 
702  if(deviceExtension->HwFlags & UNIATA_AHCI) {
703  KdPrint2((PRINT_PREFIX " ACHTUNG! should not be called for AHCI!\n"));
704  return IDE_STATUS_WRONG;
705  }
706 
707  switch(VendorID) {
708  case ATA_PROMISE_ID:
709  if(ChipType == PRNEW) {
710  ULONG Channel = deviceExtension->Channel + lChannel;
711 /*
712  AtapiWritePortEx1(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),0x11,
713  AtapiReadPortEx1(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),0x11) &
714  ~(Channel ? 0x08 : 0x02));
715 */
716  if(chan->ChannelCtrlFlags & CTRFLAGS_LBA48) {
717  AtapiWritePortEx4(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),(Channel ? 0x24 : 0x20),
718  0
719  );
720  }
721 /*
722  } else
723  if(deviceExtension->MemIo) {
724  // end transaction
725  AtapiWritePort4(chan,
726  IDX_BM_Command,
727  (AtapiReadPort4(chan,
728  IDX_BM_Command) & ~0x00000080) );
729  // clear flag
730  chan->ChannelCtrlFlags &= ~CTRFLAGS_DMA_ACTIVE;
731  return 0;
732 */
733  }
734  break;
735  }
736 
737  // get status
738  dma_status = AtapiReadPort1(chan, IDX_BM_Status) & BM_STATUS_MASK;
739  // end transaction
740  AtapiWritePort1(chan, IDX_BM_Command,
741  AtapiReadPort1(chan, IDX_BM_Command) &
742  ~BM_COMMAND_START_STOP);
743  // clear interrupt and error status
744  AtapiWritePort1(chan, IDX_BM_Status, BM_STATUS_ERR | BM_STATUS_INTR);
745  // clear flag
746  chan->ChannelCtrlFlags &= ~CTRFLAGS_DMA_ACTIVE;
747 
748  return dma_status;
749 
750 } // end AtapiDmaDone()
751 
752 VOID
753 NTAPI
754 AtapiDmaReinit(
755  IN PHW_DEVICE_EXTENSION deviceExtension,
756  IN PHW_LU_EXTENSION LunExt,
757  IN PATA_REQ AtaReq
758  )
759 {
760  SCHAR apiomode;
761 
762  if((deviceExtension->HwFlags & UNIATA_AHCI) &&
763  !(LunExt->DeviceFlags & DFLAGS_ATAPI_DEVICE)) {
764  // skip unnecessary checks
765  KdPrint2((PRINT_PREFIX "AtapiDmaReinit: ahci, nothing to do for HDD\n"));
766  return;
767  }
768 
769  apiomode = (CHAR)AtaPioMode(&(LunExt->IdentifyData));
770 
771  if(!(AtaReq->Flags & REQ_FLAG_DMA_OPERATION)) {
772  KdPrint2((PRINT_PREFIX
773  "AtapiDmaReinit: !(AtaReq->Flags & REQ_FLAG_DMA_OPERATION), fall to PIO on Device %d\n", LunExt->Lun));
774  goto limit_pio;
775  }
776  if(deviceExtension->HwFlags & UNIATA_AHCI) {
777  if(!AtaReq->ahci.ahci_base64) {
778  KdPrint2((PRINT_PREFIX
779  "AtapiDmaReinit: no AHCI PRD, fatal on Device %d\n", LunExt->Lun));
780  goto exit;
781  }
782  } else
783  if(!AtaReq->ata.dma_base) {
784  KdPrint2((PRINT_PREFIX
785  "AtapiDmaReinit: no PRD, fall to PIO on Device %d\n", LunExt->Lun));
786  goto limit_pio;
787  }
788 
789  if((deviceExtension->HbaCtrlFlags & HBAFLAGS_DMA_DISABLED_LBA48) &&
790  (AtaReq->lba >= (LONGLONG)ATA_MAX_LBA28) &&
791  (LunExt->TransferMode > ATA_PIO5) ) {
792  KdPrint2((PRINT_PREFIX
793  "AtapiDmaReinit: FORCE_DOWNRATE on Device %d for LBA48\n", LunExt->Lun));
794  goto limit_lba48;
795  }
796 
797 
798  if(AtaReq->Flags & REQ_FLAG_FORCE_DOWNRATE) {
799  KdPrint2((PRINT_PREFIX
800  "AtapiDmaReinit: FORCE_DOWNRATE on Device %d\n", LunExt->Lun));
801  if(AtaReq->lba >= (LONGLONG)ATA_MAX_LBA28) {
802 limit_lba48:
803  LunExt->DeviceFlags |= REQ_FLAG_FORCE_DOWNRATE_LBA48;
804 limit_pio:
805  // do not make extra work if we already use PIO
806  if(/*LunExt->TransferMode >= ATA_DMA*/
807  (LunExt->TransferMode > ATA_PIO5) && (LunExt->TransferMode != ATA_PIO0+apiomode)
808  ) {
809  KdPrint2((PRINT_PREFIX
810  "AtapiDmaReinit: set PIO mode on Device %d (%x -> %x)\n", LunExt->Lun, LunExt->TransferMode, ATA_PIO0+apiomode));
811  AtapiDmaInit(deviceExtension, LunExt->Lun, LunExt->chan->lChannel,
812  apiomode,
813  -1,
814  -1 );
815  } else
816  if(LunExt->LimitedTransferMode < LunExt->TransferMode) {
817  KdPrint2((PRINT_PREFIX
818  "AtapiDmaReinit: set PIO mode on Device %d (%x -> %x) (2)\n", LunExt->Lun, LunExt->TransferMode, LunExt->LimitedTransferMode));
819  AtapiDmaInit(deviceExtension, LunExt->Lun, LunExt->chan->lChannel,
820  LunExt->LimitedTransferMode-ATA_PIO0,
821  -1,
822  -1 );
823  }
824 
825  } else {
826  KdPrint2((PRINT_PREFIX
827  "AtapiDmaReinit: set MAX mode on Device %d\n", LunExt->Lun));
828  AtapiDmaInit(deviceExtension, LunExt->Lun, LunExt->chan->lChannel,
829  apiomode,
830  min( retry_Wdma[AtaReq->retry],
831  (CHAR)AtaWmode(&(LunExt->IdentifyData)) ),
832  min( retry_Udma[AtaReq->retry],
833  (CHAR)AtaUmode(&(LunExt->IdentifyData)) ) );
834  }
835 // LunExt->DeviceFlags &= ~DFLAGS_FORCE_DOWNRATE;
836  } else
837  if(
838  (LunExt->LimitedTransferMode >
839  LunExt->TransferMode) ||
840  (LunExt->DeviceFlags & DFLAGS_REINIT_DMA) ||
841  ((deviceExtension->HwFlags & UNIATA_CHAN_TIMINGS) && ((ULONG)LunExt->Lun != LunExt->chan->last_cdev))) {
842  // restore IO mode
843  KdPrint2((PRINT_PREFIX
844  "AtapiDmaReinit: restore IO mode on Device %d, last dev %d\n", LunExt->Lun, LunExt->chan->last_cdev));
845  AtapiDmaInit__(deviceExtension, LunExt);
846  } else {
847  KdPrint2((PRINT_PREFIX
848  "AtapiDmaReinit: LimitedTransferMode == TransferMode = %x (%x), Device %d, last dev %d\n", LunExt->TransferMode, LunExt->DeviceFlags, LunExt->Lun, LunExt->chan->last_cdev));
849  }
850 
851 exit:
852  return;
853 } // end AtapiDmaReinit()
854 
855 VOID
856 NTAPI
857 AtapiDmaInit__(
858  IN PHW_DEVICE_EXTENSION deviceExtension,
859  IN PHW_LU_EXTENSION LunExt
860  )
861 {
862  if(LunExt->IdentifyData.SupportDma ||
863  (LunExt->IdentifyData.AtapiDMA.DMASupport && (LunExt->DeviceFlags & DFLAGS_ATAPI_DEVICE))) {
864  KdPrint2((PRINT_PREFIX
865  "AtapiDmaInit__: Set (U)DMA on Device %d\n", LunExt->Lun));
866 /* for(i=AtaUmode(&(LunExt->IdentifyData)); i>=0; i--) {
867  AtapiDmaInit(deviceExtension, ldev & 1, ldev >> 1,
868  (CHAR)AtaPioMode(&(LunExt->IdentifyData)),
869  (CHAR)AtaWmode(&(LunExt->IdentifyData)),
870  UDMA_MODE0+(CHAR)i );
871  }
872  for(i=AtaWmode(&(LunExt->IdentifyData)); i>=0; i--) {
873  AtapiDmaInit(deviceExtension, ldev & 1, ldev >> 1,
874  (CHAR)AtaPioMode(&(LunExt->IdentifyData)),
875  (CHAR)AtaWmode(&(LunExt->IdentifyData)),
876  UDMA_MODE0+(CHAR)i );
877  }*/
878  AtapiDmaInit(deviceExtension, LunExt->Lun, LunExt->chan->lChannel,
879  (CHAR)AtaPioMode(&(LunExt->IdentifyData)),
880  (CHAR)AtaWmode(&(LunExt->IdentifyData)),
881  (CHAR)AtaUmode(&(LunExt->IdentifyData)) );
882  } else {
883  KdPrint2((PRINT_PREFIX
884  "AtapiDmaInit__: Set PIO on Device %d\n", LunExt->Lun));
885  AtapiDmaInit(deviceExtension, LunExt->Lun, LunExt->chan->lChannel,
886  (CHAR)AtaPioMode(&(LunExt->IdentifyData)), -1, -1);
887  }
888 } // end AtapiDmaInit__()
889 
890 BOOLEAN
891 NTAPI
892 AtaSetTransferMode(
893  IN PHW_DEVICE_EXTENSION deviceExtension,
894  IN ULONG DeviceNumber,
895  IN ULONG lChannel, // logical channel,
896  IN PHW_LU_EXTENSION LunExt,
897  IN ULONG mode
898  )
899 {
900  KdPrint3((PRINT_PREFIX
901  "AtaSetTransferMode: Set %#x on Device %d/%d\n", mode, lChannel, DeviceNumber));
902  LONG statusByte = 0;
903  CHAR apiomode;
904  BOOLEAN disable_intr = (deviceExtension->HwFlags & UNIATA_AHCI) || (CPU_num>1);
905 /*
906  if(deviceExtension->HwFlags & UNIATA_SATA) {
907  // experimental do nothing, see ROS BUG-9119, v0.46a1
908  statusByte = IDE_STATUS_IDLE;
909  } else */
910  if(LunExt->DeviceFlags & DFLAGS_MANUAL_CHS) {
911  statusByte = mode <= ATA_PIO2 ? IDE_STATUS_IDLE : IDE_STATUS_ERROR;
912  } else {
913  UCHAR umode;
914  if(disable_intr) {
915  AtapiDisableInterrupts(deviceExtension, lChannel);
916  }
917  if(mode > ATA_UDMA6) {
918  // for SATA, it doesn't have option to set transfer rate
919  // We need this just to switch between PIO and DMA modes
920  // Devices may support only some lower transfer rates (e.g. UDMA0-4)
921  umode = min((UCHAR)AtaUmode(&(LunExt->IdentifyData)), 6);
922  umode += ATA_UDMA0;
923  } else {
924  umode = (UCHAR)mode;
925  }
926  statusByte = AtaCommand(deviceExtension, DeviceNumber, lChannel,
927  IDE_COMMAND_SET_FEATURES, 0, 0, 0,
928  (UCHAR)umode, ATA_C_F_SETXFER, ATA_WAIT_BASE_READY);
929  if(disable_intr) {
930  AtapiEnableInterrupts(deviceExtension, lChannel);
931  }
932  }
933  if(statusByte & IDE_STATUS_ERROR) {
934  KdPrint3((PRINT_PREFIX " wait ready after error\n"));
935  if(LunExt->DeviceFlags & DFLAGS_ATAPI_DEVICE) {
936  AtapiStallExecution(10);
937  } else {
938  AtapiStallExecution(100);
939  }
940  apiomode = (CHAR)AtaPioMode(&(LunExt->IdentifyData));
941  if( (apiomode > 0) &&
942  ((CHAR)AtaWmode(&(LunExt->IdentifyData)) > 0) &&
943  ((CHAR)AtaUmode(&(LunExt->IdentifyData)) > 0)
944  ) {
945  return FALSE;
946  }
947  if(mode > ATA_PIO2) {
948  return FALSE;
949  }
950  KdPrint3((PRINT_PREFIX " assume that drive doesn't support mode swithing using PIO%d\n", apiomode));
951  mode = ATA_PIO0 + apiomode;
952  }
953  // SATA sets actual transfer rate in LunExt on init.
954  // There is no run-time SATA rate adjustment yet.
955  // On the other hand, we may turn SATA device in PIO mode
956  LunExt->TransferMode = (UCHAR)mode;
957  if(deviceExtension->HwFlags & UNIATA_SATA) {
958  if(mode < ATA_SA150) {
959  LunExt->PhyTransferMode = max(LunExt->PhyTransferMode, LunExt->TransferMode);
960  } else {
961  LunExt->PhyTransferMode = LunExt->TransferMode;
962  }
963  } else {
964  if(LunExt->DeviceFlags & DFLAGS_ATAPI_DEVICE) {
965  LunExt->PhyTransferMode = max(LunExt->LimitedTransferMode, LunExt->TransferMode);
966  } else {
967  LunExt->PhyTransferMode = LunExt->TransferMode;
968  }
969  }
970  return TRUE;
971 } // end AtaSetTransferMode()
972 
973 VOID
974 NTAPI
975 AtapiDmaInit(
976  IN PVOID HwDeviceExtension,
977  IN ULONG DeviceNumber,
978  IN ULONG lChannel, // logical channel,
979  // is always 0 except simplex-only controllers
980  IN SCHAR apiomode,
981  IN SCHAR wdmamode,
982  IN SCHAR udmamode
983  )
984 {
985  PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
986  ULONG Channel = deviceExtension->Channel + lChannel;
987  PHW_CHANNEL chan = &deviceExtension->chan[lChannel];
988  //LONG statusByte = 0;
989  ULONG dev = Channel*2 + DeviceNumber; // for non-SATA/AHCI only!
990  //ULONG ldev = lChannel*2 + DeviceNumber; // for non-SATA/AHCI only!
991  BOOLEAN isAtapi = ATAPI_DEVICE(chan, DeviceNumber);
992  ULONG slotNumber = deviceExtension->slotNumber;
993  ULONG SystemIoBusNumber = deviceExtension->SystemIoBusNumber;
994  LONG i;
995  PHW_LU_EXTENSION LunExt = chan->lun[DeviceNumber];
996  UCHAR ModeByte;
997 
998  ULONG VendorID = deviceExtension->DevID & 0xffff;
999  //ULONG DeviceID = (deviceExtension->DevID >> 16) & 0xffff;
1000  //ULONG RevID = deviceExtension->RevID;
1001  ULONG ChipType = deviceExtension->HwFlags & CHIPTYPE_MASK;
1002  ULONG ChipFlags = deviceExtension->HwFlags & CHIPFLAG_MASK;
1003 
1004  LONG statusByte = 0;
1005 
1006  //UCHAR *reg_val = NULL;
1007 
1008  LunExt->DeviceFlags &= ~DFLAGS_REINIT_DMA;
1009  /* set our most pessimistic default mode */
1010  LunExt->TransferMode = ATA_PIO;
1011 // if(!deviceExtension->BaseIoAddressBM[lChannel]) {
1012  if(!deviceExtension->BusMaster) {
1013  KdPrint2((PRINT_PREFIX " !deviceExtension->BusMaster: NO DMA\n"));
1014  wdmamode = udmamode = -1;
1015  }
1016 
1017  // Limit transfer mode (controller limitation)
1018  if((LONG)chan->MaxTransferMode >= ATA_UDMA) {
1019  KdPrint2((PRINT_PREFIX "AtapiDmaInit: chan->MaxTransferMode >= ATA_UDMA\n"));
1020  udmamode = min( udmamode, (CHAR)(chan->MaxTransferMode - ATA_UDMA));
1021  } else
1022  if((LONG)chan->MaxTransferMode >= ATA_WDMA) {
1023  KdPrint2((PRINT_PREFIX "AtapiDmaInit: chan->MaxTransferMode >= ATA_WDMA\n"));
1024  udmamode = -1;
1025  wdmamode = min( wdmamode, (CHAR)(chan->MaxTransferMode - ATA_WDMA));
1026  } else
1027  if((LONG)chan->MaxTransferMode >= ATA_PIO0) {
1028  KdPrint2((PRINT_PREFIX "AtapiDmaInit: NO DMA\n"));
1029  wdmamode = udmamode = -1;
1030  apiomode = min( apiomode, (CHAR)(chan->MaxTransferMode - ATA_PIO0));
1031  } else {
1032  KdPrint2((PRINT_PREFIX "AtapiDmaInit: PIO0\n"));
1033  wdmamode = udmamode = -1;
1034  apiomode = 0;
1035  }
1036  // Limit transfer mode (device limitation)
1037  KdPrint2((PRINT_PREFIX "AtapiDmaInit: LunExt->LimitedTransferMode %#x\n", LunExt->LimitedTransferMode));
1038  if((LONG)LunExt->LimitedTransferMode >= ATA_UDMA) {
1039  KdPrint2((PRINT_PREFIX "AtapiDmaInit: LunExt->MaxTransferMode >= ATA_UDMA => %#x\n",
1040  min( udmamode, (CHAR)(LunExt->LimitedTransferMode - ATA_UDMA))
1041  ));
1042  udmamode = min( udmamode, (CHAR)(LunExt->LimitedTransferMode - ATA_UDMA));
1043  } else
1044  if((LONG)LunExt->LimitedTransferMode >= ATA_WDMA) {
1045  KdPrint2((PRINT_PREFIX "AtapiDmaInit: LunExt->MaxTransferMode >= ATA_WDMA => %#x\n",
1046  min( wdmamode, (CHAR)(LunExt->LimitedTransferMode - ATA_WDMA))
1047  ));
1048  udmamode = -1;
1049  wdmamode = min( wdmamode, (CHAR)(LunExt->LimitedTransferMode - ATA_WDMA));
1050  } else
1051  if((LONG)LunExt->LimitedTransferMode >= ATA_PIO0) {
1052  KdPrint2((PRINT_PREFIX "AtapiDmaInit: lun NO DMA\n"));
1053  wdmamode = udmamode = -1;
1054  apiomode = min( apiomode, (CHAR)(LunExt->LimitedTransferMode - ATA_PIO0));
1055  } else {
1056  KdPrint2((PRINT_PREFIX "AtapiDmaInit: lun PIO0\n"));
1057  wdmamode = udmamode = -1;
1058  apiomode = 0;
1059  }
1060 
1061  //if(!(ChipFlags & UNIATA_AHCI)) {
1062 
1063  // this is necessary for future PM support
1064  SelectDrive(chan, DeviceNumber);
1065  GetStatus(chan, statusByte);
1066  // we can see here IDE_STATUS_ERROR status after previous operation
1067  if(statusByte & IDE_STATUS_ERROR) {
1068  KdPrint2((PRINT_PREFIX "IDE_STATUS_ERROR detected on entry, statusByte = %#x\n", statusByte));
1069  //GetBaseStatus(chan, statusByte);
1070  }
1071  if(statusByte && UniataIsIdle(deviceExtension, statusByte & ~IDE_STATUS_ERROR) != IDE_STATUS_IDLE) {
1072  KdPrint2((PRINT_PREFIX "Can't setup transfer mode: statusByte = %#x\n", statusByte));
1073  return;
1074  }
1075  //}
1076 
1077  chan->last_cdev = DeviceNumber;
1078  if(UniataIsSATARangeAvailable(deviceExtension, lChannel) ||
1079  (ChipFlags & UNIATA_AHCI) || (chan->MaxTransferMode >= ATA_SA150)
1080  ) {
1081  //if(ChipFlags & (UNIATA_SATA | UNIATA_AHCI)) {
1082  /****************/
1083  /* SATA Generic */
1084  /****************/
1085 
1086  KdPrint2((PRINT_PREFIX "SATA Generic\n"));
1087 
1088  if((udmamode >= 5) || (ChipFlags & UNIATA_AHCI) || ((udmamode >= 0) && (chan->MaxTransferMode >= ATA_SA150))) {
1089  /* some drives report UDMA6, some UDMA5 */
1090  /* ATAPI may not have SataCapabilities set in IDENTIFY DATA */
1091  if(ata_is_sata(&(LunExt->IdentifyData))) {
1092  //udmamode = min(udmamode, 6);
1093  KdPrint2((PRINT_PREFIX "LunExt->LimitedTransferMode %x, LunExt->OrigTransferMode %x\n",
1094  LunExt->LimitedTransferMode, LunExt->OrigTransferMode));
1095  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, min(LunExt->LimitedTransferMode, LunExt->OrigTransferMode))) {
1096  return;
1097  }
1098  udmamode = min(udmamode, 6);
1099 
1100  } else {
1101  KdPrint2((PRINT_PREFIX "SATA -> PATA adapter ?\n"));
1102  if (udmamode > 2 && (!LunExt->IdentifyData.HwResCableId && (LunExt->IdentifyData.HwResValid == IDENTIFY_CABLE_ID_VALID) )) {
1103  KdPrint2((PRINT_PREFIX "AtapiDmaInit: DMA limited to UDMA33, non-ATA66 compliant cable\n"));
1104  udmamode = 2;
1105  apiomode = min( apiomode, (CHAR)(LunExt->LimitedTransferMode - ATA_PIO0));
1106  } else {
1107  udmamode = min(udmamode, 6);
1108  }
1109  }
1110  }
1111  if(udmamode >= 0) {
1112  ModeByte = ATA_UDMA0 + udmamode;
1113  } else
1114  if(wdmamode >= 0) {
1115  ModeByte = ATA_WDMA0 + wdmamode;
1116  } else
1117  if(apiomode >= 0) {
1118  ModeByte = ATA_PIO0 + apiomode;
1119  } else {
1120  ModeByte = ATA_PIO;
1121  }
1122 
1123  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ModeByte);
1124  return;
1125  }
1126 
1127  if(deviceExtension->UnknownDev) {
1128  KdPrint2((PRINT_PREFIX "Unknown chip, omit Vendor/Dev checks\n"));
1129  goto try_generic_dma;
1130  }
1131 
1132  if(udmamode > 2 && (!LunExt->IdentifyData.HwResCableId && (LunExt->IdentifyData.HwResValid == IDENTIFY_CABLE_ID_VALID)) ) {
1133  if(ata_is_sata(&(LunExt->IdentifyData))) {
1134  KdPrint2((PRINT_PREFIX "AtapiDmaInit: SATA beyond adapter or Controller compat mode\n"));
1135  } else {
1136  KdPrint2((PRINT_PREFIX "AtapiDmaInit: DMA limited to UDMA33, non-ATA66 compliant cable\n"));
1137  udmamode = 2;
1138  apiomode = min( apiomode, (CHAR)(LunExt->LimitedTransferMode - ATA_PIO));
1139  }
1140  }
1141 
1142  KdPrint2((PRINT_PREFIX "Setup chip a:w:u=%d:%d:%d\n",
1143  apiomode,
1144  wdmamode,
1145  udmamode));
1146 
1147  switch(VendorID) {
1148  case ATA_ACARD_ID: {
1149  /*********/
1150  /* Acard */
1151  /*********/
1152  static const USHORT reg4a = 0xa6;
1153  UCHAR reg = 0x40 + (UCHAR)dev;
1154 
1155  if(ChipType == ATPOLD) {
1156  /* Old Acard 850 */
1157  static const USHORT reg4x2 = 0x0301;
1158 
1159  for(i=udmamode; i>=0; i--) {
1160  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA + i)) {
1161 set_old_acard:
1162  ChangePciConfig1(0x54, a | (0x01 << dev) | ((i+1) << (dev*2)));
1163  SetPciConfig1(0x4a, reg4a);
1164  SetPciConfig2(reg, reg4x2);
1165  return;
1166  }
1167 
1168  }
1169  if (wdmamode >= 2 && apiomode >= 4) {
1170  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA2)) {
1171  goto set_old_acard;
1172  }
1173  }
1174  } else {
1175  /* New Acard 86X */
1176  static const UCHAR reg4x = 0x31;
1177 
1178  for(i=udmamode; i>=0; i--) {
1179  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA + i)) {
1180 set_new_acard:
1181  ChangePciConfig2(0x44, (a & ~(0x000f << (dev * 4))) | ((i+1) << (dev*4)));
1182  SetPciConfig1(0x4a, reg4a);
1183  SetPciConfig1(reg, reg4x);
1184  return;
1185  }
1186 
1187  }
1188  if (wdmamode >= 2 && apiomode >= 4) {
1189  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA2)) {
1190  goto set_new_acard;
1191  }
1192  }
1193  }
1194  /* Use GENERIC PIO */
1195  break; }
1196  case ATA_ACER_LABS_ID: {
1197  /************************/
1198  /* Acer Labs Inc. (ALI) */
1199  /************************/
1200  static const UCHAR ali_udma[] = {0x0c, 0x0b, 0x0a, 0x09, 0x08, 0x0f};
1201  static const ULONG ali_pio[] =
1202  { 0x006d0003, 0x00580002, 0x00440001, 0x00330001,
1203  0x00310001, 0x00440001};
1204  /* the older Aladdin doesn't support ATAPI DMA on both master & slave */
1205  if ((ChipFlags & ALIOLD) &&
1206  (udmamode >= 0 || wdmamode >= 0)) {
1207  if(ATAPI_DEVICE(chan, 0) &&
1208  ATAPI_DEVICE(chan, 1)) {
1209  // 2 devices on this channel - NO DMA
1210  chan->MaxTransferMode =
1211  min(chan->MaxTransferMode, ATA_PIO4);
1212  udmamode = wdmamode = -1;
1213  break;
1214  }
1215  }
1216  for(i=udmamode; i>=0; i--) {
1217  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1218  ULONG word54;
1219 
1220  GetPciConfig4(0x54, word54);
1221  word54 &= ~(0x000f000f << (dev * 4));
1222  word54 |= (((ali_udma[i]<<16) | 5) << (dev * 4));
1223  SetPciConfig4(0x54, word54);
1224  ChangePciConfig1(0x53, a | 0x03);
1225  SetPciConfig4(0x58 + (Channel<<2), 0x00310001);
1226  return;
1227  }
1228  }
1229  /* make sure eventual UDMA mode from the BIOS is disabled */
1230  ChangePciConfig2(0x56, a & ~(0x0008 << (dev * 4)) );
1231  if (wdmamode >= 2 && apiomode >= 4) {
1232  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA2)) {
1233  ChangePciConfig1(0x53, a | 0x03);
1234  chan->ChannelCtrlFlags |= CTRFLAGS_DMA_RO;
1235  return;
1236  }
1237  }
1238  ChangePciConfig1(0x53, (a & ~0x01) | 0x02);
1239 
1240  for(i=apiomode; i>=0; i--) {
1241  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + i)) {
1242  ChangePciConfig4(0x54, a & ~(0x0008000f << (dev * 4)));
1243  SetPciConfig4(0x58 + (Channel<<2), ali_pio[i]);
1244  return;
1245  }
1246  }
1247  return;
1248  break; }
1249  case ATA_AMD_ID:
1250  case ATA_NVIDIA_ID:
1251  case ATA_VIA_ID: {
1252  /********************/
1253  /* AMD, nVidia, VIA */
1254  /********************/
1255  if(VendorID == ATA_VIA_ID) {
1256  if((ChipFlags & VIASATA) &&
1257  (Channel == 0)) {
1258  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_SA150);
1259  return;
1260  }
1261  if((ChipFlags & VIABAR) &&
1262  (Channel < 2)) {
1263  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_SA150);
1264  return;
1265  }
1266  }
1267 
1268  static const UCHAR via_modes[6][7] = {
1269  { 0xc2, 0xc1, 0xc0, 0x00, 0x00, 0x00, 0x00 }, /* ATA33 and New Chips */
1270  { 0xee, 0xec, 0xea, 0xe9, 0xe8, 0x00, 0x00 }, /* ATA66 */
1271  { 0xf7, 0xf6, 0xf4, 0xf2, 0xf1, 0xf0, 0x00 }, /* ATA100 */
1272  { 0xf7, 0xf7, 0xf6, 0xf4, 0xf2, 0xf1, 0xf0 }, /* VIA ATA133 */
1273  { 0xc2, 0xc1, 0xc0, 0xc4, 0xc5, 0xc6, 0xc7 }, /* AMD/nVIDIA */
1274  { 0xee, 0xe8, 0xe6, 0xe4, 0xe2, 0xe1, 0xe0 }}; /* VIA new */
1275  static const UCHAR via_pio[] =
1276  { 0xa8, 0x65, 0x42, 0x22, 0x20, 0x42, 0x22, 0x20,
1277  0x20, 0x20, 0x20, 0x20, 0x20, 0x20 };
1278  const UCHAR *reg_val = NULL;
1279  UCHAR reg = 0x53-(UCHAR)dev;
1280  UCHAR reg2 = reg-0x08;
1281 
1282  if(ChipFlags & VIABAR) {
1283  reg = 0xb3;
1284  reg2 = 0xab;
1285  }
1286 
1287  reg_val = &via_modes[ChipType][0];
1288 
1289  if(VendorID == ATA_NVIDIA_ID) {
1290  reg += 0x10;
1291  reg2 += 0x10;
1292  }
1293 
1294  for(i = udmamode; i>=0; i--) {
1295  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1296  SetPciConfig1(reg2, via_pio[8+i]);
1297  SetPciConfig1(reg, (UCHAR)reg_val[i]);
1298  return;
1299  }
1300  }
1301  if(!(ChipFlags & VIABAR)) {
1302  /* This chip can't do WDMA. */
1303  for(i = wdmamode; i>=0; i--) {
1304  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1305  SetPciConfig1(reg2, via_pio[5+i]);
1306  SetPciConfig1(reg, 0x8b);
1307  return;
1308  }
1309  }
1310  }
1311  /* set PIO mode timings */
1312  if((apiomode >= 0) && (ChipType != VIA133)) {
1313  SetPciConfig1(reg2, via_pio[apiomode]);
1314  }
1315  if(VendorID == ATA_VIA_ID /*&& (ChipType == VIA33 || ChipType == VIA66)*/) {
1316  via82c_timing(deviceExtension, dev, ATA_PIO0 + apiomode);
1317  }
1318  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
1319  return;
1320 
1321  break; }
1322  case ATA_CYRIX_ID: {
1323  /*********/
1324  /* Cyrix */
1325  /*********/
1326 dma_cs55xx:
1327  if(apiomode >= 4)
1328  apiomode = 4;
1329 
1330  if(ChipType == CYRIX_3x) {
1331  ULONG cyr_piotiming[] =
1332  { 0x00009172, 0x00012171, 0x00020080, 0x00032010, 0x00040010 };
1333  ULONG cyr_wdmatiming[] = { 0x00077771, 0x00012121, 0x00002020 };
1334  ULONG cyr_udmatiming[] = { 0x00921250, 0x00911140, 0x00911030 };
1335  ULONG mode_reg = 0x24+(dev << 3);
1336 
1337  for(i=udmamode; i>=0; i--) {
1338  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1339  AtapiWritePortEx4(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0), mode_reg, cyr_udmatiming[udmamode]);
1340  return;
1341  }
1342  }
1343  for(i=wdmamode; i>=0; i--) {
1344  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1345  AtapiWritePortEx4(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0), mode_reg, cyr_wdmatiming[wdmamode]);
1346  return;
1347  }
1348  }
1349  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode)) {
1350  AtapiWritePortEx4(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0), mode_reg, cyr_piotiming[apiomode]);
1351  return;
1352  }
1353  } else
1354  if(ChipType == CYRIX_OLD) {
1355  UCHAR cyr_piotiming_old[] =
1356  { 11, 6, 3, 2, 1 };
1357  UCHAR timing;
1358 
1359  for(i=wdmamode; i>=0; i--) {
1360  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1361  return;
1362  }
1363  }
1364  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode)) {
1365  timing = (6-apiomode) | (cyr_piotiming_old[i]);
1366  /* Channel command timing */
1367  SetPciConfig1(0x62+Channel, timing);
1368  /* Read command timing */
1369  SetPciConfig1(0x64+Channel*4+dev, timing);
1370  /* Write command timing */
1371  SetPciConfig1(0x66+Channel*4+dev, timing);
1372  return;
1373  }
1374  } else
1375  if(ChipType == CYRIX_35) {
1376 /*
1377  USHORT c35_pio_timings[5] = {
1378  0xF7F4, 0xF173, 0x8141, 0x5131, 0x1131
1379  };
1380  USHORT c35_pio_cmd_timings[5] = {
1381  0xF7F4, 0x53F3, 0x13F1, 0x5131, 0x1131
1382  };
1383  ULONG c35_udma_timings[5] = {
1384  0x7F7436A1, 0x7F733481, 0x7F723261, 0x7F713161, 0x7F703061
1385  };
1386  ULONG c35_mwdma_timings[3] = {
1387  0x7F0FFFF3, 0x7F035352, 0x7F024241
1388  };
1389  ULONG mode_reg = 0x24+(dev << 3);
1390 */
1391  /* No MSR support yet, do not touch any regs */
1392  for(i=udmamode; i>=0; i--) {
1393  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1394  return;
1395  }
1396  }
1397  for(i=wdmamode; i>=0; i--) {
1398  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1399  return;
1400  }
1401  }
1402  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode)) {
1403  return;
1404  }
1405  }
1406  return;
1407 
1408  break; }
1409  case ATA_NATIONAL_ID: {
1410  /************/
1411  /* National */
1412  /************/
1413  if(!ChipType) {
1414  ULONG nat_piotiming[] =
1415  { 0x9172d132, 0x21717121, 0x00803020, 0x20102010, 0x00100010,
1416  0x00803020, 0x20102010, 0x00100010,
1417  0x00100010, 0x00100010, 0x00100010 };
1418  ULONG nat_dmatiming[] = { 0x80077771, 0x80012121, 0x80002020 };
1419  ULONG nat_udmatiming[] = { 0x80921250, 0x80911140, 0x80911030 };
1420 
1421  if(apiomode >= 4)
1422  apiomode = 4;
1423  for(i=udmamode; i>=0; i--) {
1424  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1425  SetPciConfig4(0x44 + (dev * 8), nat_udmatiming[i]);
1426  SetPciConfig4(0x40 + (dev * 8), nat_piotiming[i+8]);
1427  return;
1428  }
1429  }
1430  for(i=wdmamode; i>=0; i--) {
1431  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1432  SetPciConfig4(0x44 + (dev * 8), nat_dmatiming[i]);
1433  SetPciConfig4(0x40 + (dev * 8), nat_piotiming[i+5]);
1434  return;
1435  }
1436  }
1437  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode)) {
1438  ChangePciConfig4(0x44 + (dev * 8), a | 0x80000000);
1439  SetPciConfig4(0x40 + (dev * 8), nat_piotiming[apiomode]);
1440  return;
1441  }
1442  } else {
1443  goto dma_cs55xx;
1444  }
1445  /* Use GENERIC PIO */
1446  break; }
1447  case ATA_CYPRESS_ID:
1448  /***********/
1449  /* Cypress */
1450  /***********/
1451  if (wdmamode >= 2 && apiomode >= 4) {
1452  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA2)) {
1453  SetPciConfig2(Channel ? 0x4e:0x4c, 0x2020);
1454  return;
1455  }
1456  }
1457  /* Use GENERIC PIO */
1458  break;
1459  case ATA_MARVELL_ID:
1460  /***********/
1461  /* Marvell */
1462  /***********/
1463  for(i=udmamode; i>=0; i--) {
1464  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1465  return;
1466  }
1467  }
1468  for(i=wdmamode; i>=0; i--) {
1469  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1470  return;
1471  }
1472  }
1473  /* try generic DMA, use hpt_timing() */
1474  if (wdmamode >= 0 && apiomode >= 4) {
1475  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_DMA)) {
1476  return;
1477  }
1478  }
1479  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
1480  return;
1481  break;
1482  case ATA_NETCELL_ID:
1483  /***********/
1484  /* NetCell */
1485  /***********/
1486  if (wdmamode >= 2 && apiomode >= 4) {
1487  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA2)) {
1488  return;
1489  }
1490  }
1491  /* Use GENERIC PIO */
1492  break;
1493  case ATA_HIGHPOINT_ID: {
1494  /********************/
1495  /* High Point (HPT) */
1496  /********************/
1497  for(i=udmamode; i>=0; i--) {
1498  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1499  hpt_timing(deviceExtension, dev, (UCHAR)(ATA_UDMA + i)); // ???
1500  return;
1501  }
1502  }
1503 
1504  for(i=wdmamode; i>=0; i--) {
1505  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1506  hpt_timing(deviceExtension, dev, (UCHAR)(ATA_WDMA0+i));
1507  return;
1508  }
1509  }
1510  /* try generic DMA, use hpt_timing() */
1511  if (wdmamode >= 0 && apiomode >= 4) {
1512  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_DMA)) {
1513  return;
1514  }
1515  }
1516  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
1517  hpt_timing(deviceExtension, dev, ATA_PIO0 + apiomode);
1518  return;
1519  break; }
1520  case ATA_INTEL_ID: {
1521  /*********/
1522  /* Intel */
1523  /*********/
1524 
1525  KdPrint2((PRINT_PREFIX "Intel %d\n", Channel));
1526  BOOLEAN udma_ok = FALSE;
1527  ULONG idx = 0;
1528  ULONG reg40;
1529  UCHAR reg44;
1530  USHORT reg48;
1531  USHORT reg4a;
1532  USHORT reg54;
1533  ULONG mask40 = 0;
1534  ULONG new40 = 0;
1535  UCHAR mask44 = 0;
1536  UCHAR new44 = 0;
1537  UCHAR intel_timings[] = { 0x00, 0x00, 0x10, 0x21, 0x23, 0x10, 0x21, 0x23,
1538  0x23, 0x23, 0x23, 0x23, 0x23, 0x23 };
1539  UCHAR intel_utimings[] = { 0x00, 0x01, 0x02, 0x01, 0x02, 0x01, 0x02 };
1540  const UCHAR needed_pio[3] = {
1541  ATA_PIO0, ATA_PIO3, ATA_PIO4
1542  };
1543 
1544  if(deviceExtension->DevID == ATA_I82371FB) {
1545  KdPrint2((PRINT_PREFIX " I82371FB\n"));
1546  USHORT reg4x;
1547  USHORT control=0;
1548  for(i=wdmamode; i>=0; i--) {
1549  idx = 5+i;
1550  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1551  udma_ok = TRUE;
1552  break;
1553  }
1554  }
1555  if(!udma_ok) {
1556  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
1557  idx = apiomode;
1558  } else {
1559  /* If the drive MWDMA is faster than it can do PIO then
1560  we must force PIO into PIO0 */
1561  if (apiomode < needed_pio[wdmamode]) {
1562  /* Enable DMA timing only */
1563  control |= 8; /* PIO cycles in PIO0 */
1564  }
1565  }
1566  GetPciConfig2(0x40+Channel*2, reg4x);
1567  if(apiomode > ATA_PIO0) {
1568  control |= 0x03; /* IORDY|TIME0 */
1569  } else {
1570  control |= 0x02; /* IORDY */
1571  }
1572  // if (ata_pio_need_iordy(adev))
1573  //control |= 2; /* IE */
1574  if (!isAtapi) {
1575  control |= 4; /* PPE enable */
1576  }
1577  /* Mask out the relevant control and timing bits we will load. Also
1578  clear the other drive TIME register as a precaution */
1579  reg4x &= 0xCC00 | (0x0E << (DeviceNumber*4));
1580  reg4x |= control << (DeviceNumber*4);
1581  reg4x |= intel_timings[idx] << 8;
1582  SetPciConfig2(0x40+Channel*2, reg4x);
1583  return;
1584  }
1585 
1586  if(deviceExtension->DevID == ATA_ISCH) {
1587  ULONG tim;
1588  KdPrint2((PRINT_PREFIX " ISCH\n"));
1589  GetPciConfig4(0x80 + dev*4, tim);
1590 
1591  for(i=udmamode; i>=0; i--) {
1592  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1593  tim |= (0x1 << 31);
1594  tim &= ~(0x7 << 16);
1595  tim |= (i << 16);
1596 
1597  idx = i+8;
1598  udma_ok = TRUE;
1599  apiomode = ATA_PIO4;
1600  break;
1601  }
1602  }
1603  if(!udma_ok) {
1604  for(i=wdmamode; i>=0; i--) {
1605  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1606  tim &= ~(0x1 << 31);
1607  tim &= ~(0x3 << 8);
1608  tim |= (i << 8);
1609 
1610  idx = i+5;
1611  udma_ok = TRUE;
1612  apiomode = (i == 0) ? ATA_PIO0 :
1613  (i == 1) ? ATA_PIO3 : ATA_PIO4;
1614  break;
1615  }
1616  }
1617  }
1618  if(!udma_ok) {
1619  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
1620  idx = apiomode;
1621  }
1622  tim &= ~(0x7);
1623  tim |= (apiomode & 0x7);
1624  SetPciConfig4(0x80 + dev*4, tim);
1625 
1626  return;
1627  }
1628 
1629  GetPciConfig2(0x48, reg48);
1630 // if(!(ChipFlags & ICH4_FIX)) {
1631  GetPciConfig2(0x4a, reg4a);
1632 // }
1633  GetPciConfig2(0x54, reg54);
1634 // if(udmamode >= 0) {
1635  // enable the write buffer to be used in a split (ping/pong) manner.
1636  reg54 |= 0x400;
1637 // } else {
1638 // reg54 &= ~0x400;
1639 // }
1640 
1641 // reg40 &= ~0x00ff00ff;
1642 // reg40 |= 0x40774077;
1643 
1644  for(i=udmamode; i>=0; i--) {
1645  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1646 
1647  /* Set UDMA reference clock (33 MHz or more). */
1648  SetPciConfig1(0x48, reg48 | (0x0001 << dev));
1649 // if(!(ChipFlags & ICH4_FIX)) {
1650  if(deviceExtension->MaxTransferMode == ATA_UDMA3) {
1651  // Special case (undocumented overclock !) for PIIX4e
1652  SetPciConfig2(0x4a, (reg4a | (0x03 << (dev<<2)) ) );
1653  } else {
1654  SetPciConfig2(0x4a, (reg4a & ~(0x03 << (dev<<2))) |
1655  (((USHORT)(intel_utimings[i])) << (dev<<2) ) );
1656  }
1657 // }
1658  /* Set UDMA reference clock (66 MHz or more). */
1659  reg54 &= ~(0x1001 << dev);
1660  if(i > 2) {
1661  reg54 |= (0x1 << dev);
1662  }
1663  /* Set UDMA reference clock (133 MHz). */
1664  if(i >= 5) {
1665  reg54 |= (0x1000 << dev);
1666  }
1667  SetPciConfig2(0x54, reg54);
1668 
1669  udma_ok = TRUE;
1670  idx = i+8;
1671  if(ChipFlags & ICH4_FIX) {
1672  KdPrint2((PRINT_PREFIX " ICH4_FIX udma\n"));
1673  return;
1674  }
1675  break;
1676  }
1677  }
1678 
1679  if(!udma_ok) {
1680  SetPciConfig1(0x48, reg48 & ~(0x0001 << dev));
1681  if(!(ChipFlags & ICH4_FIX)) {
1682  SetPciConfig2(0x4a, (reg4a & ~(0x3 << (dev << 2))) );
1683  }
1684  SetPciConfig2(0x54, reg54 & ~(0x1001 << dev));
1685  for(i=wdmamode; i>=0; i--) {
1686  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1687  udma_ok = TRUE;
1688  idx = i+5;
1689  if(ChipFlags & ICH4_FIX) {
1690  KdPrint2((PRINT_PREFIX " ICH4_FIX wdma\n"));
1691  return;
1692  }
1693  break;
1694  }
1695  }
1696  }
1697 
1698  if(!udma_ok) {
1699  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
1700  idx = apiomode;
1701  }
1702 
1703  GetPciConfig4(0x40, reg40);
1704  GetPciConfig1(0x44, reg44);
1705 
1706  /* Allow PIO/WDMA timing controls. */
1707  reg40 &= ~0x00ff00ff;
1708  reg40 |= 0x40774077;
1709 
1710  mask40 = 0x000000ff;
1711  /* Set PIO/WDMA timings. */
1712  if(!(DeviceNumber & 1)) {
1713  mask40 = 0x00003300;
1714  new40 = ((USHORT)(intel_timings[idx]) << 8);
1715  } else {
1716  mask44 = 0x0f;
1717  new44 = ((intel_timings[idx] & 0x30) >> 2) |
1718  (intel_timings[idx] & 0x03);
1719  }
1720 
1721  if (Channel) {
1722  mask40 <<= 16;
1723  new40 <<= 16;
1724  mask44 <<= 4;
1725  new44 <<= 4;
1726  }
1727 
1728  KdPrint2((PRINT_PREFIX " 0x40 %x/%x, 0x44 %x/%x\n", mask40, new40, mask44, new44));
1729  SetPciConfig4(0x40, (reg40 & ~mask40) | new40);
1730  SetPciConfig1(0x44, (reg44 & ~mask44) | new44);
1731 
1732  return;
1733  break; }
1734  case ATA_PROMISE_ID: {
1735  /***********/
1736  /* Promise */
1737  /***********/
1738 
1739  UCHAR sel66 = Channel ? 0x08: 0x02;
1740 
1741  if(ChipType < PRTX) {
1742  if (isAtapi) {
1743  udmamode =
1744  wdmamode = -1;
1745  }
1746  }
1747  for(i=udmamode; i>=0; i--) {
1748 
1749  if(ChipType == PRNEW) {
1750  if(i>2) {
1751  AtapiWritePortEx1(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),0x11,
1752  AtapiReadPortEx1(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),0x11) |
1753  sel66);
1754  } else {
1755  AtapiWritePortEx1(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),0x11,
1756  AtapiReadPortEx1(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),0x11) &
1757  ~sel66);
1758  }
1759  }
1760 
1761  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1762  promise_timing(deviceExtension, dev, (UCHAR)(ATA_UDMA + i)); // ???
1763  return;
1764  }
1765  }
1766  if(ChipType == PRNEW) {
1767  AtapiWritePortEx1(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),0x11,
1768  AtapiReadPortEx1(chan, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),0x11) &
1769  ~sel66);
1770  }
1771  for(i=wdmamode; i>=0; i--) {
1772  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1773  promise_timing(deviceExtension, dev, (UCHAR)(ATA_WDMA0+i));
1774  return;
1775  }
1776  }
1777  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
1778  promise_timing(deviceExtension, dev, ATA_PIO0 + apiomode);
1779  return;
1780  break; }
1781  case ATA_ATI_ID:
1782 
1783  KdPrint2((PRINT_PREFIX "ATI\n"));
1784  if(ChipType == SIIMIO) {
1785  goto l_ATA_SILICON_IMAGE_ID;
1786  }
1787  //goto ATA_SERVERWORKS_ID;
1788  // FALL THROUGH
1789 
1790  //break; }
1791 
1792  case ATA_SERVERWORKS_ID: {
1793  /***************/
1794  /* ServerWorks */
1795  /***************/
1796 // static const ULONG udma_modes[] = { 0x70, 0x21, 0x20 };
1797  static const ULONG sw_dma_modes[] = { 0x70, 0x21, 0x20 };
1798  static const ULONG sw_pio_modes[] = { 0x5d, 0x47, 0x34, 0x22, 0x20, 0x34, 0x22, 0x20,
1799  0x20, 0x20, 0x20, 0x20, 0x20, 0x20 };
1800  USHORT reg56;
1801  ULONG reg44;
1802  ULONG reg40;
1803  ULONG offset = dev ^ 0x01;
1804  ULONG bit_offset = offset * 8;
1805 
1806  for(i=udmamode; i>=0; i--) {
1807  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1808  GetPciConfig2(0x56, reg56);
1809  reg56 &= ~(0xf << (dev * 4));
1810  reg56 |= ((USHORT)i << (dev * 4));
1811  SetPciConfig2(0x56, reg56);
1812  ChangePciConfig1(0x54, a | (0x01 << dev));
1813  // 44
1814  GetPciConfig4(0x44, reg44);
1815  reg44 = (reg44 & ~(0xff << bit_offset)) |
1816  (sw_dma_modes[2] << bit_offset);
1817  SetPciConfig4(0x44, reg44);
1818  // 40
1819  GetPciConfig4(0x40, reg40);
1820  reg40 = (reg40 & ~(0xff << bit_offset)) |
1821  (sw_pio_modes[8+i] << bit_offset);
1822  SetPciConfig4(0x40, reg40);
1823  return;
1824  }
1825  }
1826 
1827  for(i=wdmamode; i>=0; i--) {
1828  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1829 
1830  ChangePciConfig1(0x54, a & ~(0x01 << dev));
1831  // 44
1832  GetPciConfig4(0x44, reg44);
1833  reg44 = (reg44 & ~(0xff << bit_offset)) |
1834  (sw_dma_modes[wdmamode] << bit_offset);
1835  SetPciConfig4(0x44, reg44);
1836  // 40
1837  GetPciConfig4(0x40, reg40);
1838  reg40 = (reg40 & ~(0xff << bit_offset)) |
1839  (sw_pio_modes[5+i] << bit_offset);
1840  SetPciConfig4(0x40, reg40);
1841  return;
1842  }
1843  }
1844  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
1845 // SetPciConfig4(0x44, sw_pio_modes[apiomode]);
1846  if(VendorID == ATA_ATI_ID) {
1847  // special case for ATI
1848  // Seems, that PATA ATI are just re-brended ServerWorks
1849  USHORT reg4a;
1850  // 4a
1851  GetPciConfig2(0x4a, reg4a);
1852  reg4a = (reg4a & ~(0xf << (dev*4))) |
1853  (apiomode << (dev*4));
1854  SetPciConfig2(0x4a, reg4a);
1855  }
1856 
1857  // 40
1858  GetPciConfig4(0x40, reg40);
1859  reg40 = (reg40 & ~(0xff << bit_offset)) |
1860  (sw_pio_modes[apiomode] << bit_offset);
1861  SetPciConfig4(0x40, reg40);
1862  return;
1863  break; }
1864  case ATA_SILICON_IMAGE_ID: {
1865 l_ATA_SILICON_IMAGE_ID:
1866  /********************/
1867  /* SiliconImage/CMD */
1868  /********************/
1869  if(ChipType == SIIMIO) {
1870 
1871  static const UCHAR sil_modes[7] =
1872  { 0xf, 0xb, 0x7, 0x5, 0x3, 0x2, 0x1 };
1873  static const USHORT sil_wdma_modes[3] =
1874  { 0x2208, 0x10c2, 0x10c1 };
1875  static const USHORT sil_pio_modes[6] =
1876  { 0x328a, 0x2283, 0x1104, 0x10c3, 0x10c1, 0x10c1 };
1877 
1878  UCHAR ureg = 0xac + ((UCHAR)DeviceNumber * 0x02) + ((UCHAR)Channel * 0x10);
1879  UCHAR uval;
1880  UCHAR mreg = Channel ? 0x84 : 0x80;
1881  UCHAR mask = DeviceNumber ? 0x30 : 0x03;
1882  UCHAR mode;
1883 
1884  GetPciConfig1(ureg, uval);
1885  GetPciConfig1(mreg, mode);
1886 
1887  /* enable UDMA mode */
1888  for(i = udmamode; i>=0; i--) {
1889 
1890  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1891  SetPciConfig1(mreg, mode | mask);
1892  SetPciConfig1(ureg, (uval & 0x3f) | sil_modes[i]);
1893  return;
1894  }
1895  }
1896  /* enable WDMA mode */
1897  for(i = wdmamode; i>=0; i--) {
1898 
1899  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1900  SetPciConfig1(mreg, mode | (mask & 0x22));
1901  SetPciConfig2(ureg - 0x4, sil_wdma_modes[i]);
1902  return;
1903  }
1904  }
1905  /* restore PIO mode */
1906  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
1907 
1908  SetPciConfig1(mreg, mode | (mask & 0x11));
1909  SetPciConfig2(ureg - 0x8, sil_pio_modes[apiomode]);
1910  return;
1911 
1912  } else {
1913 
1914  static const UCHAR cmd_modes[2][6] = {
1915  { 0x31, 0x21, 0x011, 0x25, 0x15, 0x05 },
1916  { 0xc2, 0x82, 0x042, 0x8a, 0x4a, 0x0a } };
1917  static const UCHAR cmd_wdma_modes[] = { 0x87, 0x32, 0x3f };
1918  static const UCHAR cmd_pio_modes[] = { 0xa9, 0x57, 0x44, 0x32, 0x3f };
1919  ULONG treg = 0x54 + ((dev < 3) ? (dev << 1) : 7);
1920 
1921  udmamode = min(udmamode, 5);
1922  /* enable UDMA mode */
1923  for(i = udmamode; i>=0; i--) {
1924  UCHAR umode;
1925 
1926  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
1927  GetPciConfig1(Channel ? 0x7b : 0x73, umode);
1928  umode &= ~(!(DeviceNumber & 1) ? 0x35 : 0xca);
1929  umode |= ( cmd_modes[DeviceNumber & 1][i]);
1930  SetPciConfig1(Channel ? 0x7b : 0x73, umode);
1931  return;
1932  }
1933  }
1934  /* make sure eventual UDMA mode from the BIOS is disabled */
1935  ChangePciConfig1(Channel ? 0x7b : 0x73, a & ~(!(DeviceNumber & 1) ? 0x35 : 0xca));
1936 
1937  for(i = wdmamode; i>=0; i--) {
1938 
1939  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
1940  SetPciConfig1(treg, cmd_wdma_modes[i]);
1941  ChangePciConfig1(Channel ? 0x7b : 0x73, a & ~(!(DeviceNumber & 1) ? 0x35 : 0xca));
1942  return;
1943  }
1944  }
1945  /* set PIO mode timings */
1946  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
1947 
1948  SetPciConfig1(treg, cmd_pio_modes[apiomode]);
1949  ChangePciConfig1(Channel ? 0x7b : 0x73, a & ~(!(DeviceNumber & 1) ? 0x35 : 0xca));
1950  return;
1951 
1952  }
1953  return;
1954  break; }
1955  case ATA_SIS_ID: {
1956  /*******/
1957  /* SiS */
1958  /*******/
1959  PULONG sis_modes = NULL;
1960  static const ULONG sis_modes_new133[] =
1961  { 0x28269008, 0x0c266008, 0x04263008, 0x0c0a3008, 0x05093008,
1962  0x22196008, 0x0c0a3008, 0x05093008, 0x050939fc, 0x050936ac,
1963  0x0509347c, 0x0509325c, 0x0509323c, 0x0509322c, 0x0509321c};
1964  static const ULONG sis_modes_old133[] =
1965  { 0x00cb, 0x0067, 0x0044, 0x0033, 0x0031, 0x0044, 0x0033, 0x0031,
1966  0x8f31, 0x8a31, 0x8731, 0x8531, 0x8331, 0x8231, 0x8131 };
1967  static const ULONG sis_modes_old[] =
1968  { 0x0c0b, 0x0607, 0x0404, 0x0303, 0x0301, 0x0404, 0x0303, 0x0301,
1969  0xf301, 0xd301, 0xb301, 0xa301, 0x9301, 0x8301 };
1970  static const ULONG sis_modes_new100[] =
1971  { 0x00cb, 0x0067, 0x0044, 0x0033, 0x0031, 0x0044, 0x0033, 0x0031,
1972  0x8b31, 0x8731, 0x8531, 0x8431, 0x8231, 0x8131 };
1973 
1974  ULONG reg = 0;
1975  UCHAR reg57;
1976  ULONG reg_size = 0;
1977  ULONG offs;
1978 
1979  switch(ChipType) {
1980  case SIS133NEW:
1981  sis_modes = (PULONG)(&sis_modes_new133[0]);
1982  reg_size = 4;
1983  GetPciConfig1(0x57, reg57);
1984  reg = (reg57 & 0x40 ? 0x70 : 0x40) + (dev * 4);
1985  break;
1986  case SIS133OLD:
1987  sis_modes = (PULONG)(&sis_modes_old133[0]);
1988  reg_size = 2;
1989  reg = 0x40 + (dev * 2);
1990  break;
1991  case SIS100NEW:
1992  sis_modes = (PULONG)(&sis_modes_new100[0]);
1993  reg_size = 2;
1994  reg = 0x40 + (dev * 2);
1995  break;
1996  case SIS100OLD:
1997  case SIS66:
1998  case SIS33:
1999  sis_modes = (PULONG)(&sis_modes_old[0]);
2000  reg_size = 2;
2001  reg = 0x40 + (dev * 2);
2002  break;
2003  }
2004 
2005  offs = 5+3;
2006  for(i=udmamode; i>=0; i--) {
2007  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
2008  if(reg_size == 4) {
2009  SetPciConfig4(reg, sis_modes[offs+i]);
2010  } else {
2011  SetPciConfig2(reg, (USHORT)sis_modes[offs+i]);
2012  }
2013  return;
2014  }
2015  }
2016 
2017  offs = 5;
2018  for(i=wdmamode; i>=0; i--) {
2019  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
2020  if(reg_size == 4) {
2021  SetPciConfig4(reg, sis_modes[offs+i]);
2022  } else {
2023  SetPciConfig2(reg, (USHORT)sis_modes[offs+i]);
2024  }
2025  return;
2026  }
2027  }
2028  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
2029  if(reg_size == 4) {
2030  SetPciConfig4(reg, sis_modes[apiomode]);
2031  } else {
2032  SetPciConfig2(reg, (USHORT)sis_modes[apiomode]);
2033  }
2034  return;
2035  break; }
2036  case 0x16ca:
2037  /* Cenatek Rocket Drive controller */
2038  if (wdmamode >= 0 &&
2039  (AtapiReadPort1(chan, IDX_BM_Status) &
2040  (DeviceNumber ? BM_STATUS_DRIVE_1_DMA : BM_STATUS_DRIVE_0_DMA))) {
2041  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + wdmamode);
2042  } else {
2043  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
2044  }
2045  return;
2046  case ATA_ITE_ID: { /* ITE IDE controller */
2047 
2048  if(ChipType == ITE_33) {
2049  int a_speed = 3 << (dev * 4);
2050  int u_flag = 1 << dev;
2051  int u_speed = 0;
2052  int pio = 1;
2053  UCHAR reg48, reg4a;
2054  USHORT drive_enables;
2055  ULONG drive_timing;
2056 
2057  GetPciConfig1(0x48, reg48);
2058  GetPciConfig1(0x4a, reg4a);
2059 
2060  /*
2061  * Setting the DMA cycle time to 2 or 3 PCI clocks (60 and 91 nsec
2062  * at 33 MHz PCI clock) seems to cause BadCRC errors during DMA
2063  * transfers on some drives, even though both numbers meet the minimum
2064  * ATAPI-4 spec of 73 and 54 nsec for UDMA 1 and 2 respectively.
2065  * So the faster times are just commented out here. The good news is
2066  * that the slower cycle time has very little affect on transfer
2067  * performance.
2068  */
2069 
2070  for(i=udmamode; i>=0; i--) {
2071  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
2072  SetPciConfig1(0x48, reg48 | u_flag);
2073  reg4a &= ~a_speed;
2074  SetPciConfig1(0x4a, reg4a | u_speed);
2075  pio = 4;
2076  goto setup_drive_ite;
2077  }
2078  }
2079 
2080  for(i=wdmamode; i>=0; i--) {
2081  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
2082  SetPciConfig1(0x48, reg48 & ~u_flag);
2083  SetPciConfig1(0x4a, reg4a & ~a_speed);
2084  pio = 3;
2085  return;
2086  }
2087  }
2088  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
2089  SetPciConfig1(0x48, reg48 & ~u_flag);
2090  SetPciConfig1(0x4a, reg4a & ~a_speed);
2091 
2092  pio = apiomode;
2093 
2094 setup_drive_ite:
2095 
2096  GetPciConfig2(0x40, drive_enables);
2097  GetPciConfig4(0x44, drive_timing);
2098 
2099  /*
2100  * FIX! The DIOR/DIOW pulse width and recovery times in port 0x44
2101  * are being left at the default values of 8 PCI clocks (242 nsec
2102  * for a 33 MHz clock). These can be safely shortened at higher
2103  * PIO modes. The DIOR/DIOW pulse width and recovery times only
2104  * apply to PIO modes, not to the DMA modes.
2105  */
2106 
2107  /*
2108  * Enable port 0x44. The IT8172G spec is confused; it calls
2109  * this register the "Slave IDE Timing Register", but in fact,
2110  * it controls timing for both master and slave drives.
2111  */
2112  drive_enables |= 0x4000;
2113 
2114  drive_enables &= (0xc000 | (0x06 << (DeviceNumber*4)));
2115  if (pio > 1) {
2116  /* enable prefetch and IORDY sample-point */
2117  drive_enables |= (0x06 << (DeviceNumber*4));
2118  }
2119 
2120  SetPciConfig2(0x40, drive_enables);
2121  } else
2122  if(ChipType == ITE_133) {
2123  static const UCHAR udmatiming[] =
2124  { 0x44, 0x42, 0x31, 0x21, 0x11, 0xa2, 0x91 };
2125  static const UCHAR chtiming[] =
2126  { 0xaa, 0xa3, 0xa1, 0x33, 0x31, 0x88, 0x32, 0x31 };
2127  ULONG offset = (Channel<<2) + DeviceNumber;
2128  UCHAR reg54;
2129 
2130  for(i=udmamode; i>=0; i--) {
2131  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
2132  ChangePciConfig1(0x50, a & ~(1 << (dev + 3)) );
2133  SetPciConfig1(0x56 + offset, udmatiming[i]);
2134  return;
2135  }
2136  }
2137 
2138  for(i=wdmamode; i>=0; i--) {
2139  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
2140 
2141  ChangePciConfig1(0x50, a | (1 << (dev + 3)) );
2142  GetPciConfig1(0x54 + offset, reg54);
2143  if(reg54 < chtiming[i+5]) {
2144  SetPciConfig1(0x54 + offset, chtiming[i+5]);
2145  }
2146  return;
2147  }
2148  }
2149  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
2150  ChangePciConfig1(0x50, a | (1 << (dev + 3)) );
2151  GetPciConfig1(0x54 + offset, reg54);
2152  if(reg54 < chtiming[apiomode]) {
2153  SetPciConfig1(0x54 + offset, chtiming[apiomode]);
2154  }
2155  return;
2156  } else
2157  if(ChipType == ITE_133_NEW) {
2158  //static const USHORT reg54_timings[] = { 0x0000, 0x0000, 0x0001, 0x0001, 0x0001, 0x1001, 0x1001 };
2159  static const UCHAR udmatiming[] =
2160  { 0x00, 0x01, 0x10, 0x01, 0x10, 0x01, 0x10 };
2161  static const UCHAR timings[] =
2162  { 0x00, 0x00, 0x10, 0x21, 0x23, 0x10, 0x21, 0x23,
2163  0x23, 0x23, 0x23, 0x23, 0x23, 0x02, 0x02 };
2164  BOOLEAN udma_ok = FALSE;
2165  BOOLEAN ok = FALSE;
2166  UCHAR timing = 0;
2167 
2168  WCHAR reg40;
2169  UCHAR reg44;
2170  USHORT reg4a;
2171  USHORT reg54;
2172  USHORT mask40=0, new40=0;
2173  UCHAR mask44=0, new44=0;
2174 
2175  GetPciConfig2(0x40, reg40);
2176  GetPciConfig1(0x44, reg44);
2177  GetPciConfig2(0x4a, reg4a);
2178  GetPciConfig2(0x54, reg54);
2179 
2180  if(!(reg54 & (0x10 << dev))) {
2181  // 80-pin check
2182  udmamode = min(udmamode, 2);
2183  }
2184 
2185  for(i=udmamode; i>=0; i--) {
2186  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
2187  ChangePciConfig1(0x48, a | (1 << dev) );
2188  ChangePciConfig2(0x4a,
2189  (a & ~(0x3 << (dev*4))) |
2190  (udmatiming[i] << (dev*4)) );
2191  ok=TRUE;
2192  udma_ok=TRUE;
2193  timing = timings[i+8];
2194  break;
2195  }
2196  }
2197 
2198  for(i=wdmamode; !ok && i>=0; i--) {
2199  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
2200 
2201  ok=TRUE;
2202  timing = timings[i+5];
2203  break;
2204  }
2205  }
2206 
2207  if(!ok) {
2208  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
2209  timing = timings[apiomode];
2210  }
2211 
2212  if(!udma_ok) {
2213  ChangePciConfig1(0x48, a & ~(1 << dev) );
2214  ChangePciConfig2(0x4a, a & ~(0x3 << (dev << 2)) );
2215  }
2216  if (udma_ok && udmamode >= ATA_UDMA2) {
2217  reg54 |= (0x1 << dev);
2218  } else {
2219  reg54 &= ~(0x1 << dev);
2220  }
2221  if (udma_ok && udmamode >= ATA_UDMA5) {
2222  reg54 |= (0x1000 << dev);
2223  } else {
2224  reg54 &= ~(0x1000 << dev);
2225  }
2226  SetPciConfig2(0x54, reg54 );
2227 
2228  reg40 &= 0xff00;
2229  reg40 |= 0x4033;
2230 
2231  if(!(DeviceNumber & 1)) {
2232  reg40 |= (isAtapi ? 0x04 : 0x00);
2233  mask40 = 0x3300;
2234  new40 = timing << 8;
2235  } else {
2236  reg40 |= (isAtapi ? 0x40 : 0x00);
2237  mask44 = 0x0f;
2238  new44 = ((timing & 0x30) >> 2) |
2239  (timing & 0x03);
2240  }
2241  SetPciConfig2(0x40, (reg40 & ~mask40) | new40);
2242  SetPciConfig1(0x44, (reg44 & ~mask44) | new44);
2243  return;
2244  }
2245 
2246  return;
2247  break; }
2248  case 0x3388:
2249  /* HiNT Corp. VXPro II EIDE */
2250  if (wdmamode >= 0 &&
2251  (AtapiReadPort1(chan, IDX_BM_Status) &
2252  (DeviceNumber ? BM_STATUS_DRIVE_1_DMA : BM_STATUS_DRIVE_0_DMA))) {
2253  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_DMA);
2254  } else {
2255  AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode);
2256  }
2257  return;
2258  case ATA_JMICRON_ID: {
2259 
2260  UCHAR reg40;
2261  GetPciConfig1(0x40, reg40);
2262 
2263  /*
2264  This is done on chip-init phase
2265  if(reg40 & 0x08) {
2266  // 80-pin check
2267  udmamode = min(udmamode, 2);
2268  }
2269  */
2270  /* Nothing to do to setup mode, the controller snoop SET_FEATURE cmd. */
2271  if(apiomode >= 4)
2272  apiomode = 4;
2273  for(i=udmamode; i>=0; i--) {
2274  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_UDMA0 + i)) {
2275  return;
2276  }
2277  }
2278  for(i=wdmamode; i>=0; i--) {
2279  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_WDMA0 + i)) {
2280  return;
2281  }
2282  }
2283  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode)) {
2284  return;
2285  }
2286  return;
2287  break; }
2288  }
2289 
2290 try_generic_dma:
2291 
2292  /* unknown controller chip */
2293 
2294  /* better not try generic DMA on ATAPI devices it almost never works */
2295  if (isAtapi) {
2296  KdPrint2((PRINT_PREFIX "ATAPI on unknown controller -> PIO\n"));
2297  udmamode =
2298  wdmamode = -1;
2299  }
2300 
2301  /* if controller says its setup for DMA take the easy way out */
2302  /* the downside is we dont know what DMA mode we are in */
2303  if ((udmamode >= 0 || /*wdmamode > 1*/ wdmamode >= 0) &&
2304  /*deviceExtension->BaseIoAddressBM[lChannel]*/ (deviceExtension->BusMaster==DMA_MODE_BM) &&
2305  (GetDmaStatus(deviceExtension, lChannel) &
2306  (!(DeviceNumber & 1) ?
2307  BM_STATUS_DRIVE_0_DMA : BM_STATUS_DRIVE_1_DMA))) {
2308 // LunExt->TransferMode = ATA_DMA;
2309 // return;
2310  KdPrint2((PRINT_PREFIX "try DMA on unknown controller\n"));
2311  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_DMA)) {
2312  return;
2313  }
2314  }
2315 
2316 #if 0
2317  /* well, we have no support for this, but try anyways */
2318  if ((wdmamode >= 0 && apiomode >= 4) && deviceExtension->BaseIoAddressBM[lChannel]) {
2319  if(AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_DMA/* + wdmamode*/)) {
2320  return;
2321  }
2322  }
2323 #endif
2324 
2325  KdPrint2((PRINT_PREFIX "try PIO%d on unknown controller\n", apiomode));
2326  if(!AtaSetTransferMode(deviceExtension, DeviceNumber, lChannel, LunExt, ATA_PIO0 + apiomode)) {
2327  KdPrint2((PRINT_PREFIX "fall to PIO on unknown controller\n"));
2328  LunExt->TransferMode = ATA_PIO;
2329  }
2330  return;
2331 } // end AtapiDmaInit()
2332 
2333 
2334 VOID
2335 NTAPI
2336 cyrix_timing(
2337  IN PHW_DEVICE_EXTENSION deviceExtension,
2338  IN ULONG dev, // physical device number (0-3)
2339  IN CHAR mode
2340  )
2341 {
2342 // ASSERT(dev/2 >= deviceExtension->Channel);
2343 // PHW_CHANNEL chan = &(deviceExtension->chan[dev/2-deviceExtension->Channel]);
2344  ULONG reg20 = 0x0000e132;
2345  ULONG reg24 = 0x00017771;
2346 
2347  if(mode == ATA_PIO5)
2348  mode = ATA_PIO4;
2349 
2350  switch (mode) {
2351  case ATA_PIO0: reg20 = 0x0000e132; break;
2352  case ATA_PIO1: reg20 = 0x00018121; break;
2353  case ATA_PIO2: reg20 = 0x00024020; break;
2354  case ATA_PIO3: reg20 = 0x00032010; break;
2355  case ATA_PIO4:
2356  case ATA_PIO5: reg20 = 0x00040010; break;
2357  case ATA_WDMA2: reg24 = 0x00002020; break;
2358  case ATA_UDMA2: reg24 = 0x00911030; break;
2359  }
2360  AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),(dev*8) + 0x20, reg20);
2361  AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),(dev*8) + 0x24, reg24);
2362 } // cyrix_timing()
2363 
2364 VOID
2365 NTAPI
2366 promise_timing(
2367  IN PHW_DEVICE_EXTENSION deviceExtension,
2368  IN ULONG dev, // physical device number (0-3)
2369  IN CHAR mode
2370  )
2371 {
2372  PVOID HwDeviceExtension = (PVOID)deviceExtension;
2373  ULONG slotNumber = deviceExtension->slotNumber;
2374  ULONG SystemIoBusNumber = deviceExtension->SystemIoBusNumber;
2375 
2376  //ULONG ChipFlags = deviceExtension->HwFlags & CHIPFLAG_MASK;
2377 
2378  ULONG port = 0x60 + (dev<<2);
2379 
2380  if(mode == ATA_PIO5)
2381  mode = ATA_PIO4;
2382 
2383  if(mode < ATA_PIO0)
2384  mode = ATA_PIO0;
2385 
2386 #if 0
2387 // **** FreeBSD code ****
2388 
2389  ULONG ChipType = deviceExtension->HwFlags & CHIPTYPE_MASK;
2390  ULONG timing = 0;
2391 
2392  switch(ChipType) {
2393  case PROLD:
2394  switch (mode) {
2395  default:
2396  case ATA_PIO0: timing = 0x004ff329; break;
2397  case ATA_PIO1: timing = 0x004fec25; break;
2398  case ATA_PIO2: timing = 0x004fe823; break;
2399  case ATA_PIO3: timing = 0x004fe622; break;
2400  case ATA_PIO4: timing = 0x004fe421; break;
2401  case ATA_WDMA0: timing = 0x004567f3; break;
2402  case ATA_WDMA1: timing = 0x004467f3; break;
2403  case ATA_WDMA2: timing = 0x004367f3; break;
2404  case ATA_UDMA0: timing = 0x004367f3; break;
2405  case ATA_UDMA1: timing = 0x004247f3; break;
2406  case ATA_UDMA2: timing = 0x004127f3; break;
2407  }
2408  break;
2409 
2410  case PRNEW:
2411  switch (mode) {
2412  default:
2413  case ATA_PIO0: timing = 0x004fff2f; break;
2414  case ATA_PIO1: timing = 0x004ff82a; break;
2415  case ATA_PIO2: timing = 0x004ff026; break;
2416  case ATA_PIO3: timing = 0x004fec24; break;
2417  case ATA_PIO4: timing = 0x004fe822; break;
2418  case ATA_WDMA0: timing = 0x004acef6; break;
2419  case ATA_WDMA1: timing = 0x0048cef6; break;
2420  case ATA_WDMA2: timing = 0x0046cef6; break;
2421  case ATA_UDMA0: timing = 0x0046cef6; break;
2422  case ATA_UDMA1: timing = 0x00448ef6; break;
2423  case ATA_UDMA2: timing = 0x00436ef6; break;
2424  case ATA_UDMA3: timing = 0x00424ef6; break;
2425  case ATA_UDMA4: timing = 0x004127f3; break;
2426  case ATA_UDMA5: timing = 0x004127f3; break;
2427  }
2428  break;
2429  default:
2430  return;
2431  }
2432  if(!timing) {
2433  return;
2434  }
2435  SetPciConfig4(port, timing);
2436 
2437 #else
2438 // **** Linux code ****
2439 
2440  UCHAR r_bp, r_cp, r_ap;
2441  ULONG i;
2442 
2443  static UCHAR udma_timing[6][2] = {
2444  { 0x60, 0x03 }, /* 33 Mhz Clock */
2445  { 0x40, 0x02 },
2446  { 0x20, 0x01 },
2447  { 0x40, 0x02 }, /* 66 Mhz Clock */
2448  { 0x20, 0x01 },
2449  { 0x20, 0x01 }
2450  };
2451  static UCHAR mdma_timing[3][2] = {
2452  { 0xe0, 0x0f },
2453  { 0x60, 0x04 },
2454  { 0x60, 0x03 },
2455  };
2456  static USHORT pio_timing[5] = {
2457  0x0913, 0x050C , 0x0308, 0x0206, 0x0104
2458  };
2459 
2460  if(mode > ATA_UDMA5) {
2461  return;
2462  }
2463 
2464  if(mode > ATA_WDMA0) {
2465 
2466  GetPciConfig1(port+1, r_bp);
2467  GetPciConfig1(port+2, r_cp);
2468 
2469  r_bp &= ~0xE0;
2470  r_cp &= ~0x0F;
2471 
2472  if(mode >= ATA_UDMA0) {
2473  i = mode - ATA_UDMA0;
2474  r_bp |= udma_timing[i][0];
2475  r_cp |= udma_timing[i][1];
2476 
2477  } else {
2478  i = mode - ATA_WDMA0;
2479  r_bp |= mdma_timing[i][0];
2480  r_cp |= mdma_timing[i][1];
2481  }
2482  SetPciConfig1(port+1, r_bp);
2483  SetPciConfig1(port+2, r_cp);
2484  } else
2485  if(mode <= ATA_PIO5) {
2486  GetPciConfig1(port+0, r_ap);
2487  GetPciConfig1(port+1, r_bp);
2488 
2489  i = mode - ATA_PIO0;
2490  r_ap &= ~0x3F; /* Preserve ERRDY_EN, SYNC_IN */
2491  r_bp &= ~0x1F;
2492  r_ap |= (UCHAR)(pio_timing[i] >> 8);
2493  r_bp |= (UCHAR)(pio_timing[i] & 0xFF);
2494 
2495 // if (ata_pio_need_iordy(adev))
2496  r_ap |= 0x20; /* IORDY enable */
2497 // if (adev->class == ATA_DEV_ATA)
2498 // r_ap |= 0x10; /* FIFO enable */
2499 
2500  SetPciConfig1(port+0, r_ap);
2501  SetPciConfig1(port+1, r_bp);
2502  }
2503 
2504 #endif
2505 
2506 } // end promise_timing()
2507 
2508 
2509 VOID
2510 NTAPI
2511 hpt_timing(
2512  IN PHW_DEVICE_EXTENSION deviceExtension,
2513  IN ULONG dev, // physical device number (0-3)
2514  IN CHAR mode
2515  )
2516 {
2517  PVOID HwDeviceExtension = (PVOID)deviceExtension;
2518  ULONG slotNumber = deviceExtension->slotNumber;
2519  ULONG SystemIoBusNumber = deviceExtension->SystemIoBusNumber;
2520 
2521  ULONG ChipType = deviceExtension->HwFlags & CHIPTYPE_MASK;
2522  //ULONG ChipFlags = deviceExtension->HwFlags & CHIPFLAG_MASK;
2523 
2524  ULONG timing = 0;
2525 
2526  if(mode == ATA_PIO5)
2527  mode = ATA_PIO4;
2528 
2529  switch(ChipType) {
2530  case HPT374:
2531 
2532  switch (mode) { /* HPT374 */
2533  case ATA_PIO0: timing = 0x0ac1f48a; break;
2534  case ATA_PIO1: timing = 0x0ac1f465; break;
2535  case ATA_PIO2: timing = 0x0a81f454; break;
2536  case ATA_PIO3: timing = 0x0a81f443; break;
2537  case ATA_PIO4: timing = 0x0a81f442; break;
2538  case ATA_WDMA0: timing = 0x228082ea; break;
2539  case ATA_WDMA1: timing = 0x22808254; break;
2540  case ATA_WDMA2: timing = 0x22808242; break;
2541  case ATA_UDMA0: timing = 0x121882ea; break;
2542  case ATA_UDMA1: timing = 0x12148254; break;
2543  case ATA_UDMA2: timing = 0x120c8242; break;
2544  case ATA_UDMA3: timing = 0x128c8242; break;
2545  case ATA_UDMA4: timing = 0x12ac8242; break;
2546  case ATA_UDMA5: timing = 0x12848242; break;
2547  case ATA_UDMA6: timing = 0x12808242; break;
2548  default: timing = 0x0d029d5e;
2549  }
2550  break;
2551 
2552  case HPT372:
2553 
2554  switch (mode) { /* HPT372 */
2555  case ATA_PIO0: timing = 0x0d029d5e; break;
2556  case ATA_PIO1: timing = 0x0d029d26; break;
2557  case ATA_PIO2: timing = 0x0c829ca6; break;
2558  case ATA_PIO3: timing = 0x0c829c84; break;
2559  case ATA_PIO4: timing = 0x0c829c62; break;
2560  case ATA_WDMA0: timing = 0x2c82922e; break;
2561  case ATA_WDMA1: timing = 0x2c829266; break;
2562  case ATA_WDMA2: timing = 0x2c829262; break;
2563  case ATA_UDMA0: timing = 0x1c829c62; break;
2564  case ATA_UDMA1: timing = 0x1c9a9c62; break;
2565  case ATA_UDMA2: timing = 0x1c929c62; break;
2566  case ATA_UDMA3: timing = 0x1c8e9c62; break;
2567  case ATA_UDMA4: timing = 0x1c8a9c62; break;
2568  case ATA_UDMA5: timing = 0x1c8a9c62; break;
2569  case ATA_UDMA6: timing = 0x1c869c62; break;
2570  default: timing = 0x0d029d5e;
2571  }
2572  break;
2573 
2574  case HPT370:
2575 
2576  switch (mode) { /* HPT370 */
2577  case ATA_PIO0: timing = 0x06914e57; break;
2578  case ATA_PIO1: timing = 0x06914e43; break;
2579  case ATA_PIO2: timing = 0x06514e33; break;
2580  case ATA_PIO3: timing = 0x06514e22; break;
2581  case ATA_PIO4: timing = 0x06514e21; break;
2582  case ATA_WDMA0: timing = 0x26514e97; break;
2583  case ATA_WDMA1: timing = 0x26514e33; break;
2584  case ATA_WDMA2: timing = 0x26514e21; break;
2585  case ATA_UDMA0: timing = 0x16514e31; break;
2586  case ATA_UDMA1: timing = 0x164d4e31; break;
2587  case ATA_UDMA2: timing = 0x16494e31; break;
2588  case ATA_UDMA3: timing = 0x166d4e31; break;
2589  case ATA_UDMA4: timing = 0x16454e31; break;
2590  case ATA_UDMA5: timing = 0x16454e31; break;
2591  default: timing = 0x06514e57;
2592  }
2593 
2594  case HPT366: {
2595  UCHAR reg41;
2596 
2597  GetPciConfig1(0x41 + (dev << 2), reg41);
2598 
2599  switch (reg41) {
2600  case 0x85: /* 25Mhz */
2601  switch (mode) {
2602  case ATA_PIO0: timing = 0x40d08585; break;
2603  case ATA_PIO1: timing = 0x40d08572; break;
2604  case ATA_PIO2: timing = 0x40ca8542; break;
2605  case ATA_PIO3: timing = 0x40ca8532; break;
2606  case ATA_PIO4: timing = 0x40ca8521; break;
2607  case ATA_WDMA2: timing = 0x20ca8521; break;
2608  case ATA_UDMA2: timing = 0x10cf8521; break;
2609  case ATA_UDMA4: timing = 0x10c98521; break;
2610  default: timing = 0x01208585;
2611  }
2612  break;
2613  default:
2614  case 0xa7: /* 33MHz */
2615  switch (mode) {
2616  case ATA_PIO0: timing = 0x40d0a7aa; break;
2617  case ATA_PIO1: timing = 0x40d0a7a3; break;
2618  case ATA_PIO2: timing = 0x40d0a753; break;
2619  case ATA_PIO3: timing = 0x40c8a742; break;
2620  case ATA_PIO4: timing = 0x40c8a731; break;
2621  case ATA_WDMA0: timing = 0x20c8a797; break;
2622  case ATA_WDMA1: timing = 0x20c8a732; break;
2623  case ATA_WDMA2: timing = 0x20c8a731; break;
2624  case ATA_UDMA0: timing = 0x10c8a731; break;
2625  case ATA_UDMA1: timing = 0x10cba731; break;
2626  case ATA_UDMA2: timing = 0x10caa731; break;
2627  case ATA_UDMA3: timing = 0x10cfa731; break;
2628  case ATA_UDMA4: timing = 0x10c9a731; break;
2629  default: timing = 0x0120a7a7;
2630  }
2631  break;
2632  case 0xd9: /* 40Mhz */
2633  switch (mode) {
2634  case ATA_PIO0: timing = 0x4018d9d9; break;
2635  case ATA_PIO1: timing = 0x4010d9c7; break;
2636  case ATA_PIO2: timing = 0x4010d997; break;
2637  case ATA_PIO3: timing = 0x4010d974; break;
2638  case ATA_PIO4: timing = 0x4008d963; break;
2639  case ATA_WDMA2: timing = 0x2008d943; break;
2640  case ATA_UDMA2: timing = 0x100bd943; break;
2641  case ATA_UDMA4: timing = 0x100fd943; break;
2642  default: timing = 0x0120d9d9;
2643  }
2644  }
2645  break; }
2646  }
2647 
2648  SetPciConfig4(0x40 + (dev<<2), timing);
2649 } // end hpt_timing()
2650 
2651 
2652 #define FIT(v,min,max) (((v)>(max)?(max):(v))<(min)?(min):(v))
2653 
2654 VOID
2655 NTAPI
2656 via82c_timing(
2657  IN PHW_DEVICE_EXTENSION deviceExtension,
2658  IN ULONG dev, // physical device number (0-3)
2659  IN CHAR mode
2660  )
2661 {
2662  PVOID HwDeviceExtension = (PVOID)deviceExtension;
2663  ULONG slotNumber = deviceExtension->slotNumber;
2664  ULONG SystemIoBusNumber = deviceExtension->SystemIoBusNumber;
2665 
2666  // Newer chips dislike this:
2667  if(
2668  deviceExtension->MaxTransferMode < ATA_UDMA6) {
2669  return;
2670  }
2671 
2672  USHORT T = 1000 / /* PciBusClockMHz()*/ 33;
2673 
2674  USHORT setup = 0;
2675  USHORT active = 0;
2676  USHORT recover = 0;
2677  USHORT cycle = 0;
2678 
2679  UCHAR t;
2680 
2681  switch(mode) {
2682  default:
2683  case ATA_PIO0: setup = 70; active = 165; recover = 150; cycle = 600; break;
2684  case ATA_PIO1: setup = 50; active = 125; recover = 100; cycle = 383; break;
2685  case ATA_PIO2: setup = 30; active = 100; recover = 90; cycle = 240; break;
2686  case ATA_PIO3: setup = 30; active = 80; recover = 70; cycle = 180; break;
2687  case ATA_PIO4: setup = 25; active = 70; recover = 25; cycle = 120; break;
2688  case ATA_PIO5: setup = 20; active = 50; recover = 30; cycle = 100; break;
2689  }
2690 
2691  setup = (setup -1)/(T+1);
2692  active = (active -1)/(T+1);
2693  recover = (recover-1)/(T+1);
2694  cycle = (cycle -1)/(T+1);
2695 
2696  if (active + recover < cycle) {
2697  active += (cycle - (active + recover)) / 2;
2698  recover = cycle - active;
2699  }
2700 
2701  /* PIO address setup */
2702  GetPciConfig1(0x4c, t);
2703  t = (t & ~(3 << ((3 - dev) << 1))) | (FIT(setup - 1, 0, 3) << ((3 - dev) << 1));
2704  SetPciConfig1(0x4c, t);
2705 
2706  /* PIO active & recover */
2707  SetPciConfig1(0x4b-dev, (FIT(active - 1, 0, 0xf) << 4) | FIT(recover - 1, 0, 0xf) );
2708 } // end via82c_timing()
2709 
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