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1 /*
2  * linux/drivers/ide/pci/sis5513.c      Version 0.27    Jul 14, 2007
3  *
4  * Copyright (C) 1999-2000      Andre Hedrick <andre@linux-ide.org>
5  * Copyright (C) 2002           Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer
6  * Copyright (C) 2003           Vojtech Pavlik <vojtech@suse.cz>
7  * Copyright (C) 2007           Bartlomiej Zolnierkiewicz
8  *
9  * May be copied or modified under the terms of the GNU General Public License
10  *
11  *
12  * Thanks :
13  *
14  * SiS Taiwan           : for direct support and hardware.
15  * Daniela Engert       : for initial ATA100 advices and numerous others.
16  * John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt        :
17  *                        for checking code correctness, providing patches.
18  *
19  *
20  * Original tests and design on the SiS620 chipset.
21  * ATA100 tests and design on the SiS735 chipset.
22  * ATA16/33 support from specs
23  * ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>
24  * ATA133 961/962/963 fixes by Vojtech Pavlik <vojtech@suse.cz>
25  *
26  * Documentation:
27  *      SiS chipset documentation available under NDA to companies only
28  *      (not to individuals).
29  */
30
31 /*
32  * The original SiS5513 comes from a SiS5511/55112/5513 chipset. The original
33  * SiS5513 was also used in the SiS5596/5513 chipset. Thus if we see a SiS5511
34  * or SiS5596, we can assume we see the first MWDMA-16 capable SiS5513 chip.
35  *
36  * Later SiS chipsets integrated the 5513 functionality into the NorthBridge,
37  * starting with SiS5571 and up to SiS745. The PCI ID didn't change, though. We
38  * can figure out that we have a more modern and more capable 5513 by looking
39  * for the respective NorthBridge IDs.
40  *
41  * Even later (96x family) SiS chipsets use the MuTIOL link and place the 5513
42  * into the SouthBrige. Here we cannot rely on looking up the NorthBridge PCI
43  * ID, while the now ATA-133 capable 5513 still has the same PCI ID.
44  * Fortunately the 5513 can be 'unmasked' by fiddling with some config space
45  * bits, changing its device id to the true one - 5517 for 961 and 5518 for
46  * 962/963.
47  */
48
49 #include <linux/types.h>
50 #include <linux/module.h>
51 #include <linux/kernel.h>
52 #include <linux/delay.h>
53 #include <linux/timer.h>
54 #include <linux/mm.h>
55 #include <linux/ioport.h>
56 #include <linux/blkdev.h>
57 #include <linux/hdreg.h>
58
59 #include <linux/interrupt.h>
60 #include <linux/pci.h>
61 #include <linux/init.h>
62 #include <linux/ide.h>
63
64 #include <asm/irq.h>
65
66 #include "ide-timing.h"
67
68 #define DISPLAY_SIS_TIMINGS
69
70 /* registers layout and init values are chipset family dependant */
71
72 #define ATA_16          0x01
73 #define ATA_33          0x02
74 #define ATA_66          0x03
75 #define ATA_100a        0x04 // SiS730/SiS550 is ATA100 with ATA66 layout
76 #define ATA_100         0x05
77 #define ATA_133a        0x06 // SiS961b with 133 support
78 #define ATA_133         0x07 // SiS962/963
79
80 static u8 chipset_family;
81
82 /*
83  * Devices supported
84  */
85 static const struct {
86         const char *name;
87         u16 host_id;
88         u8 chipset_family;
89         u8 flags;
90 } SiSHostChipInfo[] = {
91         { "SiS968",     PCI_DEVICE_ID_SI_968,   ATA_133  },
92         { "SiS966",     PCI_DEVICE_ID_SI_966,   ATA_133  },
93         { "SiS965",     PCI_DEVICE_ID_SI_965,   ATA_133  },
94         { "SiS745",     PCI_DEVICE_ID_SI_745,   ATA_100  },
95         { "SiS735",     PCI_DEVICE_ID_SI_735,   ATA_100  },
96         { "SiS733",     PCI_DEVICE_ID_SI_733,   ATA_100  },
97         { "SiS635",     PCI_DEVICE_ID_SI_635,   ATA_100  },
98         { "SiS633",     PCI_DEVICE_ID_SI_633,   ATA_100  },
99
100         { "SiS730",     PCI_DEVICE_ID_SI_730,   ATA_100a },
101         { "SiS550",     PCI_DEVICE_ID_SI_550,   ATA_100a },
102
103         { "SiS640",     PCI_DEVICE_ID_SI_640,   ATA_66   },
104         { "SiS630",     PCI_DEVICE_ID_SI_630,   ATA_66   },
105         { "SiS620",     PCI_DEVICE_ID_SI_620,   ATA_66   },
106         { "SiS540",     PCI_DEVICE_ID_SI_540,   ATA_66   },
107         { "SiS530",     PCI_DEVICE_ID_SI_530,   ATA_66   },
108
109         { "SiS5600",    PCI_DEVICE_ID_SI_5600,  ATA_33   },
110         { "SiS5598",    PCI_DEVICE_ID_SI_5598,  ATA_33   },
111         { "SiS5597",    PCI_DEVICE_ID_SI_5597,  ATA_33   },
112         { "SiS5591/2",  PCI_DEVICE_ID_SI_5591,  ATA_33   },
113         { "SiS5582",    PCI_DEVICE_ID_SI_5582,  ATA_33   },
114         { "SiS5581",    PCI_DEVICE_ID_SI_5581,  ATA_33   },
115
116         { "SiS5596",    PCI_DEVICE_ID_SI_5596,  ATA_16   },
117         { "SiS5571",    PCI_DEVICE_ID_SI_5571,  ATA_16   },
118         { "SiS5517",    PCI_DEVICE_ID_SI_5517,  ATA_16   },
119         { "SiS551x",    PCI_DEVICE_ID_SI_5511,  ATA_16   },
120 };
121
122 /* Cycle time bits and values vary across chip dma capabilities
123    These three arrays hold the register layout and the values to set.
124    Indexed by chipset_family and (dma_mode - XFER_UDMA_0) */
125
126 /* {0, ATA_16, ATA_33, ATA_66, ATA_100a, ATA_100, ATA_133} */
127 static u8 cycle_time_offset[] = {0,0,5,4,4,0,0};
128 static u8 cycle_time_range[] = {0,0,2,3,3,4,4};
129 static u8 cycle_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
130         {0,0,0,0,0,0,0}, /* no udma */
131         {0,0,0,0,0,0,0}, /* no udma */
132         {3,2,1,0,0,0,0}, /* ATA_33 */
133         {7,5,3,2,1,0,0}, /* ATA_66 */
134         {7,5,3,2,1,0,0}, /* ATA_100a (730 specific), differences are on cycle_time range and offset */
135         {11,7,5,4,2,1,0}, /* ATA_100 */
136         {15,10,7,5,3,2,1}, /* ATA_133a (earliest 691 southbridges) */
137         {15,10,7,5,3,2,1}, /* ATA_133 */
138 };
139 /* CRC Valid Setup Time vary across IDE clock setting 33/66/100/133
140    See SiS962 data sheet for more detail */
141 static u8 cvs_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
142         {0,0,0,0,0,0,0}, /* no udma */
143         {0,0,0,0,0,0,0}, /* no udma */
144         {2,1,1,0,0,0,0},
145         {4,3,2,1,0,0,0},
146         {4,3,2,1,0,0,0},
147         {6,4,3,1,1,1,0},
148         {9,6,4,2,2,2,2},
149         {9,6,4,2,2,2,2},
150 };
151 /* Initialize time, Active time, Recovery time vary across
152    IDE clock settings. These 3 arrays hold the register value
153    for PIO0/1/2/3/4 and DMA0/1/2 mode in order */
154 static u8 ini_time_value[][8] = {
155         {0,0,0,0,0,0,0,0},
156         {0,0,0,0,0,0,0,0},
157         {2,1,0,0,0,1,0,0},
158         {4,3,1,1,1,3,1,1},
159         {4,3,1,1,1,3,1,1},
160         {6,4,2,2,2,4,2,2},
161         {9,6,3,3,3,6,3,3},
162         {9,6,3,3,3,6,3,3},
163 };
164 static u8 act_time_value[][8] = {
165         {0,0,0,0,0,0,0,0},
166         {0,0,0,0,0,0,0,0},
167         {9,9,9,2,2,7,2,2},
168         {19,19,19,5,4,14,5,4},
169         {19,19,19,5,4,14,5,4},
170         {28,28,28,7,6,21,7,6},
171         {38,38,38,10,9,28,10,9},
172         {38,38,38,10,9,28,10,9},
173 };
174 static u8 rco_time_value[][8] = {
175         {0,0,0,0,0,0,0,0},
176         {0,0,0,0,0,0,0,0},
177         {9,2,0,2,0,7,1,1},
178         {19,5,1,5,2,16,3,2},
179         {19,5,1,5,2,16,3,2},
180         {30,9,3,9,4,25,6,4},
181         {40,12,4,12,5,34,12,5},
182         {40,12,4,12,5,34,12,5},
183 };
184
185 /*
186  * Printing configuration
187  */
188 /* Used for chipset type printing at boot time */
189 static char* chipset_capability[] = {
190         "ATA", "ATA 16",
191         "ATA 33", "ATA 66",
192         "ATA 100 (1st gen)", "ATA 100 (2nd gen)",
193         "ATA 133 (1st gen)", "ATA 133 (2nd gen)"
194 };
195
196 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
197 #include <linux/stat.h>
198 #include <linux/proc_fs.h>
199
200 static u8 sis_proc = 0;
201
202 static struct pci_dev *bmide_dev;
203
204 static char* cable_type[] = {
205         "80 pins",
206         "40 pins"
207 };
208
209 static char* recovery_time[] ={
210         "12 PCICLK", "1 PCICLK",
211         "2 PCICLK", "3 PCICLK",
212         "4 PCICLK", "5 PCICLCK",
213         "6 PCICLK", "7 PCICLCK",
214         "8 PCICLK", "9 PCICLCK",
215         "10 PCICLK", "11 PCICLK",
216         "13 PCICLK", "14 PCICLK",
217         "15 PCICLK", "15 PCICLK"
218 };
219
220 static char* active_time[] = {
221         "8 PCICLK", "1 PCICLCK",
222         "2 PCICLK", "3 PCICLK",
223         "4 PCICLK", "5 PCICLK",
224         "6 PCICLK", "12 PCICLK"
225 };
226
227 static char* cycle_time[] = {
228         "Reserved", "2 CLK",
229         "3 CLK", "4 CLK",
230         "5 CLK", "6 CLK",
231         "7 CLK", "8 CLK",
232         "9 CLK", "10 CLK",
233         "11 CLK", "12 CLK",
234         "13 CLK", "14 CLK",
235         "15 CLK", "16 CLK"
236 };
237
238 /* Generic add master or slave info function */
239 static char* get_drives_info (char *buffer, u8 pos)
240 {
241         u8 reg00, reg01, reg10, reg11; /* timing registers */
242         u32 regdw0, regdw1;
243         char* p = buffer;
244
245 /* Postwrite/Prefetch */
246         if (chipset_family < ATA_133) {
247                 pci_read_config_byte(bmide_dev, 0x4b, &reg00);
248                 p += sprintf(p, "Drive %d:        Postwrite %s \t \t Postwrite %s\n",
249                              pos, (reg00 & (0x10 << pos)) ? "Enabled" : "Disabled",
250                              (reg00 & (0x40 << pos)) ? "Enabled" : "Disabled");
251                 p += sprintf(p, "                Prefetch  %s \t \t Prefetch  %s\n",
252                              (reg00 & (0x01 << pos)) ? "Enabled" : "Disabled",
253                              (reg00 & (0x04 << pos)) ? "Enabled" : "Disabled");
254                 pci_read_config_byte(bmide_dev, 0x40+2*pos, &reg00);
255                 pci_read_config_byte(bmide_dev, 0x41+2*pos, &reg01);
256                 pci_read_config_byte(bmide_dev, 0x44+2*pos, &reg10);
257                 pci_read_config_byte(bmide_dev, 0x45+2*pos, &reg11);
258         } else {
259                 u32 reg54h;
260                 u8 drive_pci = 0x40;
261                 pci_read_config_dword(bmide_dev, 0x54, &reg54h);
262                 if (reg54h & 0x40000000) {
263                         // Configuration space remapped to 0x70
264                         drive_pci = 0x70;
265                 }
266                 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos, &regdw0);
267                 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos+8, &regdw1);
268
269                 p += sprintf(p, "Drive %d:\n", pos);
270         }
271
272
273 /* UDMA */
274         if (chipset_family >= ATA_133) {
275                 p += sprintf(p, "                UDMA %s \t \t \t UDMA %s\n",
276                              (regdw0 & 0x04) ? "Enabled" : "Disabled",
277                              (regdw1 & 0x04) ? "Enabled" : "Disabled");
278                 p += sprintf(p, "                UDMA Cycle Time    %s \t UDMA Cycle Time    %s\n",
279                              cycle_time[(regdw0 & 0xF0) >> 4],
280                              cycle_time[(regdw1 & 0xF0) >> 4]);
281         } else if (chipset_family >= ATA_33) {
282                 p += sprintf(p, "                UDMA %s \t \t \t UDMA %s\n",
283                              (reg01 & 0x80) ? "Enabled" : "Disabled",
284                              (reg11 & 0x80) ? "Enabled" : "Disabled");
285
286                 p += sprintf(p, "                UDMA Cycle Time    ");
287                 switch(chipset_family) {
288                         case ATA_33:    p += sprintf(p, cycle_time[(reg01 & 0x60) >> 5]); break;
289                         case ATA_66:
290                         case ATA_100a:  p += sprintf(p, cycle_time[(reg01 & 0x70) >> 4]); break;
291                         case ATA_100:
292                         case ATA_133a:  p += sprintf(p, cycle_time[reg01 & 0x0F]); break;
293                         default:        p += sprintf(p, "?"); break;
294                 }
295                 p += sprintf(p, " \t UDMA Cycle Time    ");
296                 switch(chipset_family) {
297                         case ATA_33:    p += sprintf(p, cycle_time[(reg11 & 0x60) >> 5]); break;
298                         case ATA_66:
299                         case ATA_100a:  p += sprintf(p, cycle_time[(reg11 & 0x70) >> 4]); break;
300                         case ATA_100:
301                         case ATA_133a:  p += sprintf(p, cycle_time[reg11 & 0x0F]); break;
302                         default:        p += sprintf(p, "?"); break;
303                 }
304                 p += sprintf(p, "\n");
305         }
306
307
308         if (chipset_family < ATA_133) { /* else case TODO */
309
310 /* Data Active */
311                 p += sprintf(p, "                Data Active Time   ");
312                 switch(chipset_family) {
313                         case ATA_16: /* confirmed */
314                         case ATA_33:
315                         case ATA_66:
316                         case ATA_100a: p += sprintf(p, active_time[reg01 & 0x07]); break;
317                         case ATA_100:
318                         case ATA_133a: p += sprintf(p, active_time[(reg00 & 0x70) >> 4]); break;
319                         default: p += sprintf(p, "?"); break;
320                 }
321                 p += sprintf(p, " \t Data Active Time   ");
322                 switch(chipset_family) {
323                         case ATA_16:
324                         case ATA_33:
325                         case ATA_66:
326                         case ATA_100a: p += sprintf(p, active_time[reg11 & 0x07]); break;
327                         case ATA_100:
328                         case ATA_133a: p += sprintf(p, active_time[(reg10 & 0x70) >> 4]); break;
329                         default: p += sprintf(p, "?"); break;
330                 }
331                 p += sprintf(p, "\n");
332
333 /* Data Recovery */
334         /* warning: may need (reg&0x07) for pre ATA66 chips */
335                 p += sprintf(p, "                Data Recovery Time %s \t Data Recovery Time %s\n",
336                              recovery_time[reg00 & 0x0f], recovery_time[reg10 & 0x0f]);
337         }
338
339         return p;
340 }
341
342 static char* get_masters_info(char* buffer)
343 {
344         return get_drives_info(buffer, 0);
345 }
346
347 static char* get_slaves_info(char* buffer)
348 {
349         return get_drives_info(buffer, 1);
350 }
351
352 /* Main get_info, called on /proc/ide/sis reads */
353 static int sis_get_info (char *buffer, char **addr, off_t offset, int count)
354 {
355         char *p = buffer;
356         int len;
357         u8 reg;
358         u16 reg2, reg3;
359
360         p += sprintf(p, "\nSiS 5513 ");
361         switch(chipset_family) {
362                 case ATA_16: p += sprintf(p, "DMA 16"); break;
363                 case ATA_33: p += sprintf(p, "Ultra 33"); break;
364                 case ATA_66: p += sprintf(p, "Ultra 66"); break;
365                 case ATA_100a:
366                 case ATA_100: p += sprintf(p, "Ultra 100"); break;
367                 case ATA_133a:
368                 case ATA_133: p += sprintf(p, "Ultra 133"); break;
369                 default: p+= sprintf(p, "Unknown???"); break;
370         }
371         p += sprintf(p, " chipset\n");
372         p += sprintf(p, "--------------- Primary Channel "
373                      "---------------- Secondary Channel "
374                      "-------------\n");
375
376 /* Status */
377         pci_read_config_byte(bmide_dev, 0x4a, &reg);
378         if (chipset_family == ATA_133) {
379                 pci_read_config_word(bmide_dev, 0x50, &reg2);
380                 pci_read_config_word(bmide_dev, 0x52, &reg3);
381         }
382         p += sprintf(p, "Channel Status: ");
383         if (chipset_family < ATA_66) {
384                 p += sprintf(p, "%s \t \t \t \t %s\n",
385                              (reg & 0x04) ? "On" : "Off",
386                              (reg & 0x02) ? "On" : "Off");
387         } else if (chipset_family < ATA_133) {
388                 p += sprintf(p, "%s \t \t \t \t %s \n",
389                              (reg & 0x02) ? "On" : "Off",
390                              (reg & 0x04) ? "On" : "Off");
391         } else { /* ATA_133 */
392                 p += sprintf(p, "%s \t \t \t \t %s \n",
393                              (reg2 & 0x02) ? "On" : "Off",
394                              (reg3 & 0x02) ? "On" : "Off");
395         }
396
397 /* Operation Mode */
398         pci_read_config_byte(bmide_dev, 0x09, &reg);
399         p += sprintf(p, "Operation Mode: %s \t \t \t %s \n",
400                      (reg & 0x01) ? "Native" : "Compatible",
401                      (reg & 0x04) ? "Native" : "Compatible");
402
403 /* 80-pin cable ? */
404         if (chipset_family >= ATA_133) {
405                 p += sprintf(p, "Cable Type:     %s \t \t \t %s\n",
406                              (reg2 & 0x01) ? cable_type[1] : cable_type[0],
407                              (reg3 & 0x01) ? cable_type[1] : cable_type[0]);
408         } else if (chipset_family > ATA_33) {
409                 pci_read_config_byte(bmide_dev, 0x48, &reg);
410                 p += sprintf(p, "Cable Type:     %s \t \t \t %s\n",
411                              (reg & 0x10) ? cable_type[1] : cable_type[0],
412                              (reg & 0x20) ? cable_type[1] : cable_type[0]);
413         }
414
415 /* Prefetch Count */
416         if (chipset_family < ATA_133) {
417                 pci_read_config_word(bmide_dev, 0x4c, &reg2);
418                 pci_read_config_word(bmide_dev, 0x4e, &reg3);
419                 p += sprintf(p, "Prefetch Count: %d \t \t \t \t %d\n",
420                              reg2, reg3);
421         }
422
423         p = get_masters_info(p);
424         p = get_slaves_info(p);
425
426         len = (p - buffer) - offset;
427         *addr = buffer + offset;
428
429         return len > count ? count : len;
430 }
431 #endif /* defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_IDE_PROC_FS) */
432
433 /*
434  * Configuration functions
435  */
436 /* Enables per-drive prefetch and postwrite */
437 static void config_drive_art_rwp (ide_drive_t *drive)
438 {
439         ide_hwif_t *hwif        = HWIF(drive);
440         struct pci_dev *dev     = hwif->pci_dev;
441
442         u8 reg4bh               = 0;
443         u8 rw_prefetch          = (0x11 << drive->dn);
444
445         if (drive->media != ide_disk)
446                 return;
447         pci_read_config_byte(dev, 0x4b, &reg4bh);
448
449         if ((reg4bh & rw_prefetch) != rw_prefetch)
450                 pci_write_config_byte(dev, 0x4b, reg4bh|rw_prefetch);
451 }
452
453 /* Set per-drive active and recovery time */
454 static void config_art_rwp_pio (ide_drive_t *drive, u8 pio)
455 {
456         ide_hwif_t *hwif        = HWIF(drive);
457         struct pci_dev *dev     = hwif->pci_dev;
458
459         u8 drive_pci, test1, test2;
460
461         config_drive_art_rwp(drive);
462
463         /* In pre ATA_133 case, drives sit at 0x40 + 4*drive->dn */
464         drive_pci = 0x40;
465         /* In SiS962 case drives sit at (0x40 or 0x70) + 8*drive->dn) */
466         if (chipset_family >= ATA_133) {
467                 u32 reg54h;
468                 pci_read_config_dword(dev, 0x54, &reg54h);
469                 if (reg54h & 0x40000000) drive_pci = 0x70;
470                 drive_pci += ((drive->dn)*0x4);
471         } else {
472                 drive_pci += ((drive->dn)*0x2);
473         }
474
475         /* register layout changed with newer ATA100 chips */
476         if (chipset_family < ATA_100) {
477                 pci_read_config_byte(dev, drive_pci, &test1);
478                 pci_read_config_byte(dev, drive_pci+1, &test2);
479
480                 /* Clear active and recovery timings */
481                 test1 &= ~0x0F;
482                 test2 &= ~0x07;
483
484                 switch(pio) {
485                         case 4:         test1 |= 0x01; test2 |= 0x03; break;
486                         case 3:         test1 |= 0x03; test2 |= 0x03; break;
487                         case 2:         test1 |= 0x04; test2 |= 0x04; break;
488                         case 1:         test1 |= 0x07; test2 |= 0x06; break;
489                         case 0:         /* PIO0: register setting == X000 */
490                         default:        break;
491                 }
492                 pci_write_config_byte(dev, drive_pci, test1);
493                 pci_write_config_byte(dev, drive_pci+1, test2);
494         } else if (chipset_family < ATA_133) {
495                 switch(pio) { /*                active  recovery
496                                                   v     v */
497                         case 4:         test1 = 0x30|0x01; break;
498                         case 3:         test1 = 0x30|0x03; break;
499                         case 2:         test1 = 0x40|0x04; break;
500                         case 1:         test1 = 0x60|0x07; break;
501                         case 0:         test1 = 0x00; break;
502                         default:        break;
503                 }
504                 pci_write_config_byte(dev, drive_pci, test1);
505         } else { /* ATA_133 */
506                 u32 test3;
507                 pci_read_config_dword(dev, drive_pci, &test3);
508                 test3 &= 0xc0c00fff;
509                 if (test3 & 0x08) {
510                         test3 |= ini_time_value[ATA_133][pio] << 12;
511                         test3 |= act_time_value[ATA_133][pio] << 16;
512                         test3 |= rco_time_value[ATA_133][pio] << 24;
513                 } else {
514                         test3 |= ini_time_value[ATA_100][pio] << 12;
515                         test3 |= act_time_value[ATA_100][pio] << 16;
516                         test3 |= rco_time_value[ATA_100][pio] << 24;
517                 }
518                 pci_write_config_dword(dev, drive_pci, test3);
519         }
520 }
521
522 static void sis_set_pio_mode(ide_drive_t *drive, const u8 pio)
523 {
524         config_art_rwp_pio(drive, pio);
525         (void)ide_config_drive_speed(drive, XFER_PIO_0 + pio);
526 }
527
528 static int sis5513_tune_chipset(ide_drive_t *drive, const u8 speed)
529 {
530         ide_hwif_t *hwif        = HWIF(drive);
531         struct pci_dev *dev     = hwif->pci_dev;
532         u32 regdw;
533         u8 drive_pci, reg;
534
535         /* See config_art_rwp_pio for drive pci config registers */
536         drive_pci = 0x40;
537         if (chipset_family >= ATA_133) {
538                 u32 reg54h;
539                 pci_read_config_dword(dev, 0x54, &reg54h);
540                 if (reg54h & 0x40000000) drive_pci = 0x70;
541                 drive_pci += ((drive->dn)*0x4);
542                 pci_read_config_dword(dev, (unsigned long)drive_pci, &regdw);
543                 /* Disable UDMA bit for non UDMA modes on UDMA chips */
544                 if (speed < XFER_UDMA_0) {
545                         regdw &= 0xfffffffb;
546                         pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
547                 }
548         
549         } else {
550                 drive_pci += ((drive->dn)*0x2);
551                 pci_read_config_byte(dev, drive_pci+1, &reg);
552                 /* Disable UDMA bit for non UDMA modes on UDMA chips */
553                 if ((speed < XFER_UDMA_0) && (chipset_family > ATA_16)) {
554                         reg &= 0x7F;
555                         pci_write_config_byte(dev, drive_pci+1, reg);
556                 }
557         }
558
559         /* Config chip for mode */
560         switch(speed) {
561                 case XFER_UDMA_6:
562                 case XFER_UDMA_5:
563                 case XFER_UDMA_4:
564                 case XFER_UDMA_3:
565                 case XFER_UDMA_2:
566                 case XFER_UDMA_1:
567                 case XFER_UDMA_0:
568                         if (chipset_family >= ATA_133) {
569                                 regdw |= 0x04;
570                                 regdw &= 0xfffff00f;
571                                 /* check if ATA133 enable */
572                                 if (regdw & 0x08) {
573                                         regdw |= (unsigned long)cycle_time_value[ATA_133][speed-XFER_UDMA_0] << 4;
574                                         regdw |= (unsigned long)cvs_time_value[ATA_133][speed-XFER_UDMA_0] << 8;
575                                 } else {
576                                         regdw |= (unsigned long)cycle_time_value[ATA_100][speed-XFER_UDMA_0] << 4;
577                                         regdw |= (unsigned long)cvs_time_value[ATA_100][speed-XFER_UDMA_0] << 8;
578                                 }
579                                 pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
580                         } else {
581                                 /* Force the UDMA bit on if we want to use UDMA */
582                                 reg |= 0x80;
583                                 /* clean reg cycle time bits */
584                                 reg &= ~((0xFF >> (8 - cycle_time_range[chipset_family]))
585                                          << cycle_time_offset[chipset_family]);
586                                 /* set reg cycle time bits */
587                                 reg |= cycle_time_value[chipset_family][speed-XFER_UDMA_0]
588                                         << cycle_time_offset[chipset_family];
589                                 pci_write_config_byte(dev, drive_pci+1, reg);
590                         }
591                         break;
592                 case XFER_MW_DMA_2:
593                 case XFER_MW_DMA_1:
594                 case XFER_MW_DMA_0:
595                 case XFER_SW_DMA_2:
596                 case XFER_SW_DMA_1:
597                 case XFER_SW_DMA_0:
598                         break;
599                 default:
600                         BUG();
601                         break;
602         }
603
604         return ide_config_drive_speed(drive, speed);
605 }
606
607 static int sis5513_config_xfer_rate(ide_drive_t *drive)
608 {
609         /*
610          * TODO: always set PIO mode and remove this
611          */
612         ide_set_max_pio(drive);
613
614         drive->init_speed = 0;
615
616         if (ide_tune_dma(drive))
617                 return 0;
618
619         if (ide_use_fast_pio(drive))
620                 ide_set_max_pio(drive);
621
622         return -1;
623 }
624
625 static u8 sis5513_ata133_udma_filter(ide_drive_t *drive)
626 {
627         struct pci_dev *dev = drive->hwif->pci_dev;
628         int drive_pci;
629         u32 reg54 = 0, regdw = 0;
630
631         pci_read_config_dword(dev, 0x54, &reg54);
632         drive_pci = ((reg54 & 0x40000000) ? 0x70 : 0x40) + drive->dn * 4;
633         pci_read_config_dword(dev, drive_pci, &regdw);
634
635         /* if ATA133 disable, we should not set speed above UDMA5 */
636         return (regdw & 0x08) ? ATA_UDMA6 : ATA_UDMA5;
637 }
638
639 /* Chip detection and general config */
640 static unsigned int __devinit init_chipset_sis5513 (struct pci_dev *dev, const char *name)
641 {
642         struct pci_dev *host;
643         int i = 0;
644
645         chipset_family = 0;
646
647         for (i = 0; i < ARRAY_SIZE(SiSHostChipInfo) && !chipset_family; i++) {
648
649                 host = pci_get_device(PCI_VENDOR_ID_SI, SiSHostChipInfo[i].host_id, NULL);
650
651                 if (!host)
652                         continue;
653
654                 chipset_family = SiSHostChipInfo[i].chipset_family;
655
656                 /* Special case for SiS630 : 630S/ET is ATA_100a */
657                 if (SiSHostChipInfo[i].host_id == PCI_DEVICE_ID_SI_630) {
658                         if (host->revision >= 0x30)
659                                 chipset_family = ATA_100a;
660                 }
661                 pci_dev_put(host);
662         
663                 printk(KERN_INFO "SIS5513: %s %s controller\n",
664                          SiSHostChipInfo[i].name, chipset_capability[chipset_family]);
665         }
666
667         if (!chipset_family) { /* Belongs to pci-quirks */
668
669                         u32 idemisc;
670                         u16 trueid;
671
672                         /* Disable ID masking and register remapping */
673                         pci_read_config_dword(dev, 0x54, &idemisc);
674                         pci_write_config_dword(dev, 0x54, (idemisc & 0x7fffffff));
675                         pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
676                         pci_write_config_dword(dev, 0x54, idemisc);
677
678                         if (trueid == 0x5518) {
679                                 printk(KERN_INFO "SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller\n");
680                                 chipset_family = ATA_133;
681
682                                 /* Check for 5513 compability mapping
683                                  * We must use this, else the port enabled code will fail,
684                                  * as it expects the enablebits at 0x4a.
685                                  */
686                                 if ((idemisc & 0x40000000) == 0) {
687                                         pci_write_config_dword(dev, 0x54, idemisc | 0x40000000);
688                                         printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
689                                 }
690                         }
691         }
692
693         if (!chipset_family) { /* Belongs to pci-quirks */
694
695                         struct pci_dev *lpc_bridge;
696                         u16 trueid;
697                         u8 prefctl;
698                         u8 idecfg;
699
700                         pci_read_config_byte(dev, 0x4a, &idecfg);
701                         pci_write_config_byte(dev, 0x4a, idecfg | 0x10);
702                         pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
703                         pci_write_config_byte(dev, 0x4a, idecfg);
704
705                         if (trueid == 0x5517) { /* SiS 961/961B */
706
707                                 lpc_bridge = pci_get_slot(dev->bus, 0x10); /* Bus 0, Dev 2, Fn 0 */
708                                 pci_read_config_byte(dev, 0x49, &prefctl);
709                                 pci_dev_put(lpc_bridge);
710
711                                 if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
712                                         printk(KERN_INFO "SIS5513: SiS 961B MuTIOL IDE UDMA133 controller\n");
713                                         chipset_family = ATA_133a;
714                                 } else {
715                                         printk(KERN_INFO "SIS5513: SiS 961 MuTIOL IDE UDMA100 controller\n");
716                                         chipset_family = ATA_100;
717                                 }
718                         }
719         }
720
721         if (!chipset_family)
722                 return -1;
723
724         /* Make general config ops here
725            1/ tell IDE channels to operate in Compatibility mode only
726            2/ tell old chips to allow per drive IDE timings */
727
728         {
729                 u8 reg;
730                 u16 regw;
731
732                 switch(chipset_family) {
733                         case ATA_133:
734                                 /* SiS962 operation mode */
735                                 pci_read_config_word(dev, 0x50, &regw);
736                                 if (regw & 0x08)
737                                         pci_write_config_word(dev, 0x50, regw&0xfff7);
738                                 pci_read_config_word(dev, 0x52, &regw);
739                                 if (regw & 0x08)
740                                         pci_write_config_word(dev, 0x52, regw&0xfff7);
741                                 break;
742                         case ATA_133a:
743                         case ATA_100:
744                                 /* Fixup latency */
745                                 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x80);
746                                 /* Set compatibility bit */
747                                 pci_read_config_byte(dev, 0x49, &reg);
748                                 if (!(reg & 0x01)) {
749                                         pci_write_config_byte(dev, 0x49, reg|0x01);
750                                 }
751                                 break;
752                         case ATA_100a:
753                         case ATA_66:
754                                 /* Fixup latency */
755                                 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x10);
756
757                                 /* On ATA_66 chips the bit was elsewhere */
758                                 pci_read_config_byte(dev, 0x52, &reg);
759                                 if (!(reg & 0x04)) {
760                                         pci_write_config_byte(dev, 0x52, reg|0x04);
761                                 }
762                                 break;
763                         case ATA_33:
764                                 /* On ATA_33 we didn't have a single bit to set */
765                                 pci_read_config_byte(dev, 0x09, &reg);
766                                 if ((reg & 0x0f) != 0x00) {
767                                         pci_write_config_byte(dev, 0x09, reg&0xf0);
768                                 }
769                         case ATA_16:
770                                 /* force per drive recovery and active timings
771                                    needed on ATA_33 and below chips */
772                                 pci_read_config_byte(dev, 0x52, &reg);
773                                 if (!(reg & 0x08)) {
774                                         pci_write_config_byte(dev, 0x52, reg|0x08);
775                                 }
776                                 break;
777                 }
778
779 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_IDE_PROC_FS)
780                 if (!sis_proc) {
781                         sis_proc = 1;
782                         bmide_dev = dev;
783                         ide_pci_create_host_proc("sis", sis_get_info);
784                 }
785 #endif
786         }
787
788         return 0;
789 }
790
791 struct sis_laptop {
792         u16 device;
793         u16 subvendor;
794         u16 subdevice;
795 };
796
797 static const struct sis_laptop sis_laptop[] = {
798         /* devid, subvendor, subdev */
799         { 0x5513, 0x1043, 0x1107 },     /* ASUS A6K */
800         { 0x5513, 0x1734, 0x105f },     /* FSC Amilo A1630 */
801         /* end marker */
802         { 0, }
803 };
804
805 static u8 __devinit ata66_sis5513(ide_hwif_t *hwif)
806 {
807         struct pci_dev *pdev = hwif->pci_dev;
808         const struct sis_laptop *lap = &sis_laptop[0];
809         u8 ata66 = 0;
810
811         while (lap->device) {
812                 if (lap->device == pdev->device &&
813                     lap->subvendor == pdev->subsystem_vendor &&
814                     lap->subdevice == pdev->subsystem_device)
815                         return ATA_CBL_PATA40_SHORT;
816                 lap++;
817         }
818
819         if (chipset_family >= ATA_133) {
820                 u16 regw = 0;
821                 u16 reg_addr = hwif->channel ? 0x52: 0x50;
822                 pci_read_config_word(hwif->pci_dev, reg_addr, &regw);
823                 ata66 = (regw & 0x8000) ? 0 : 1;
824         } else if (chipset_family >= ATA_66) {
825                 u8 reg48h = 0;
826                 u8 mask = hwif->channel ? 0x20 : 0x10;
827                 pci_read_config_byte(hwif->pci_dev, 0x48, &reg48h);
828                 ata66 = (reg48h & mask) ? 0 : 1;
829         }
830
831         return ata66 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
832 }
833
834 static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
835 {
836         u8 udma_rates[] = { 0x00, 0x00, 0x07, 0x1f, 0x3f, 0x3f, 0x7f, 0x7f };
837
838         hwif->autodma = 0;
839
840         if (!hwif->irq)
841                 hwif->irq = hwif->channel ? 15 : 14;
842
843         hwif->set_pio_mode = &sis_set_pio_mode;
844         hwif->speedproc = &sis5513_tune_chipset;
845
846         if (chipset_family >= ATA_133)
847                 hwif->udma_filter = sis5513_ata133_udma_filter;
848
849         if (!(hwif->dma_base)) {
850                 hwif->drives[0].autotune = 1;
851                 hwif->drives[1].autotune = 1;
852                 return;
853         }
854
855         hwif->atapi_dma = 1;
856
857         hwif->ultra_mask = udma_rates[chipset_family];
858         hwif->mwdma_mask = 0x07;
859         hwif->swdma_mask = 0x07;
860
861         if (!chipset_family)
862                 return;
863
864         if (hwif->cbl != ATA_CBL_PATA40_SHORT)
865                 hwif->cbl = ata66_sis5513(hwif);
866
867         if (chipset_family > ATA_16) {
868                 hwif->ide_dma_check = &sis5513_config_xfer_rate;
869                 if (!noautodma)
870                         hwif->autodma = 1;
871         }
872         hwif->drives[0].autodma = hwif->autodma;
873         hwif->drives[1].autodma = hwif->autodma;
874         return;
875 }
876
877 static ide_pci_device_t sis5513_chipset __devinitdata = {
878         .name           = "SIS5513",
879         .init_chipset   = init_chipset_sis5513,
880         .init_hwif      = init_hwif_sis5513,
881         .autodma        = NOAUTODMA,
882         .enablebits     = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
883         .bootable       = ON_BOARD,
884         .pio_mask       = ATA_PIO4,
885 };
886
887 static int __devinit sis5513_init_one(struct pci_dev *dev, const struct pci_device_id *id)
888 {
889         return ide_setup_pci_device(dev, &sis5513_chipset);
890 }
891
892 static struct pci_device_id sis5513_pci_tbl[] = {
893         { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5513, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
894         { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5518, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
895         { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_1180, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
896         { 0, },
897 };
898 MODULE_DEVICE_TABLE(pci, sis5513_pci_tbl);
899
900 static struct pci_driver driver = {
901         .name           = "SIS_IDE",
902         .id_table       = sis5513_pci_tbl,
903         .probe          = sis5513_init_one,
904 };
905
906 static int __init sis5513_ide_init(void)
907 {
908         return ide_pci_register_driver(&driver);
909 }
910
911 module_init(sis5513_ide_init);
912
913 MODULE_AUTHOR("Lionel Bouton, L C Chang, Andre Hedrick, Vojtech Pavlik");
914 MODULE_DESCRIPTION("PCI driver module for SIS IDE");
915 MODULE_LICENSE("GPL");
916
917 /*
918  * TODO:
919  *      - CLEANUP
920  *      - Use drivers/ide/ide-timing.h !
921  *      - More checks in the config registers (force values instead of
922  *        relying on the BIOS setting them correctly).
923  *      - Further optimisations ?
924  *        . for example ATA66+ regs 0x48 & 0x4A
925  */