Remove obsolete #include <linux/config.h>
[linux-3.10.git] / drivers / ide / pci / sis5513.c
1 /*
2  * linux/drivers/ide/pci/sis5513.c      Version 0.16ac+vp       Jun 18, 2003
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  * May be copied or modified under the terms of the GNU General Public License
8  *
9  *
10  * Thanks :
11  *
12  * SiS Taiwan           : for direct support and hardware.
13  * Daniela Engert       : for initial ATA100 advices and numerous others.
14  * John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt        :
15  *                        for checking code correctness, providing patches.
16  *
17  *
18  * Original tests and design on the SiS620 chipset.
19  * ATA100 tests and design on the SiS735 chipset.
20  * ATA16/33 support from specs
21  * ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>
22  * ATA133 961/962/963 fixes by Vojtech Pavlik <vojtech@suse.cz>
23  *
24  * Documentation:
25  *      SiS chipset documentation available under NDA to companies only
26  *      (not to individuals).
27  */
28
29 /*
30  * The original SiS5513 comes from a SiS5511/55112/5513 chipset. The original
31  * SiS5513 was also used in the SiS5596/5513 chipset. Thus if we see a SiS5511
32  * or SiS5596, we can assume we see the first MWDMA-16 capable SiS5513 chip.
33  *
34  * Later SiS chipsets integrated the 5513 functionality into the NorthBridge,
35  * starting with SiS5571 and up to SiS745. The PCI ID didn't change, though. We
36  * can figure out that we have a more modern and more capable 5513 by looking
37  * for the respective NorthBridge IDs.
38  *
39  * Even later (96x family) SiS chipsets use the MuTIOL link and place the 5513
40  * into the SouthBrige. Here we cannot rely on looking up the NorthBridge PCI
41  * ID, while the now ATA-133 capable 5513 still has the same PCI ID.
42  * Fortunately the 5513 can be 'unmasked' by fiddling with some config space
43  * bits, changing its device id to the true one - 5517 for 961 and 5518 for
44  * 962/963.
45  */
46
47 #include <linux/types.h>
48 #include <linux/module.h>
49 #include <linux/kernel.h>
50 #include <linux/delay.h>
51 #include <linux/timer.h>
52 #include <linux/mm.h>
53 #include <linux/ioport.h>
54 #include <linux/blkdev.h>
55 #include <linux/hdreg.h>
56
57 #include <linux/interrupt.h>
58 #include <linux/pci.h>
59 #include <linux/init.h>
60 #include <linux/ide.h>
61
62 #include <asm/irq.h>
63
64 #include "ide-timing.h"
65
66 #define DISPLAY_SIS_TIMINGS
67
68 /* registers layout and init values are chipset family dependant */
69
70 #define ATA_16          0x01
71 #define ATA_33          0x02
72 #define ATA_66          0x03
73 #define ATA_100a        0x04 // SiS730/SiS550 is ATA100 with ATA66 layout
74 #define ATA_100         0x05
75 #define ATA_133a        0x06 // SiS961b with 133 support
76 #define ATA_133         0x07 // SiS962/963
77
78 static u8 chipset_family;
79
80 /*
81  * Devices supported
82  */
83 static const struct {
84         const char *name;
85         u16 host_id;
86         u8 chipset_family;
87         u8 flags;
88 } SiSHostChipInfo[] = {
89         { "SiS965",     PCI_DEVICE_ID_SI_965,   ATA_133  },
90         { "SiS745",     PCI_DEVICE_ID_SI_745,   ATA_100  },
91         { "SiS735",     PCI_DEVICE_ID_SI_735,   ATA_100  },
92         { "SiS733",     PCI_DEVICE_ID_SI_733,   ATA_100  },
93         { "SiS635",     PCI_DEVICE_ID_SI_635,   ATA_100  },
94         { "SiS633",     PCI_DEVICE_ID_SI_633,   ATA_100  },
95
96         { "SiS730",     PCI_DEVICE_ID_SI_730,   ATA_100a },
97         { "SiS550",     PCI_DEVICE_ID_SI_550,   ATA_100a },
98
99         { "SiS640",     PCI_DEVICE_ID_SI_640,   ATA_66   },
100         { "SiS630",     PCI_DEVICE_ID_SI_630,   ATA_66   },
101         { "SiS620",     PCI_DEVICE_ID_SI_620,   ATA_66   },
102         { "SiS540",     PCI_DEVICE_ID_SI_540,   ATA_66   },
103         { "SiS530",     PCI_DEVICE_ID_SI_530,   ATA_66   },
104
105         { "SiS5600",    PCI_DEVICE_ID_SI_5600,  ATA_33   },
106         { "SiS5598",    PCI_DEVICE_ID_SI_5598,  ATA_33   },
107         { "SiS5597",    PCI_DEVICE_ID_SI_5597,  ATA_33   },
108         { "SiS5591/2",  PCI_DEVICE_ID_SI_5591,  ATA_33   },
109         { "SiS5582",    PCI_DEVICE_ID_SI_5582,  ATA_33   },
110         { "SiS5581",    PCI_DEVICE_ID_SI_5581,  ATA_33   },
111
112         { "SiS5596",    PCI_DEVICE_ID_SI_5596,  ATA_16   },
113         { "SiS5571",    PCI_DEVICE_ID_SI_5571,  ATA_16   },
114         { "SiS5517",    PCI_DEVICE_ID_SI_5517,  ATA_16   },
115         { "SiS551x",    PCI_DEVICE_ID_SI_5511,  ATA_16   },
116 };
117
118 /* Cycle time bits and values vary across chip dma capabilities
119    These three arrays hold the register layout and the values to set.
120    Indexed by chipset_family and (dma_mode - XFER_UDMA_0) */
121
122 /* {0, ATA_16, ATA_33, ATA_66, ATA_100a, ATA_100, ATA_133} */
123 static u8 cycle_time_offset[] = {0,0,5,4,4,0,0};
124 static u8 cycle_time_range[] = {0,0,2,3,3,4,4};
125 static u8 cycle_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
126         {0,0,0,0,0,0,0}, /* no udma */
127         {0,0,0,0,0,0,0}, /* no udma */
128         {3,2,1,0,0,0,0}, /* ATA_33 */
129         {7,5,3,2,1,0,0}, /* ATA_66 */
130         {7,5,3,2,1,0,0}, /* ATA_100a (730 specific), differences are on cycle_time range and offset */
131         {11,7,5,4,2,1,0}, /* ATA_100 */
132         {15,10,7,5,3,2,1}, /* ATA_133a (earliest 691 southbridges) */
133         {15,10,7,5,3,2,1}, /* ATA_133 */
134 };
135 /* CRC Valid Setup Time vary across IDE clock setting 33/66/100/133
136    See SiS962 data sheet for more detail */
137 static u8 cvs_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
138         {0,0,0,0,0,0,0}, /* no udma */
139         {0,0,0,0,0,0,0}, /* no udma */
140         {2,1,1,0,0,0,0},
141         {4,3,2,1,0,0,0},
142         {4,3,2,1,0,0,0},
143         {6,4,3,1,1,1,0},
144         {9,6,4,2,2,2,2},
145         {9,6,4,2,2,2,2},
146 };
147 /* Initialize time, Active time, Recovery time vary across
148    IDE clock settings. These 3 arrays hold the register value
149    for PIO0/1/2/3/4 and DMA0/1/2 mode in order */
150 static u8 ini_time_value[][8] = {
151         {0,0,0,0,0,0,0,0},
152         {0,0,0,0,0,0,0,0},
153         {2,1,0,0,0,1,0,0},
154         {4,3,1,1,1,3,1,1},
155         {4,3,1,1,1,3,1,1},
156         {6,4,2,2,2,4,2,2},
157         {9,6,3,3,3,6,3,3},
158         {9,6,3,3,3,6,3,3},
159 };
160 static u8 act_time_value[][8] = {
161         {0,0,0,0,0,0,0,0},
162         {0,0,0,0,0,0,0,0},
163         {9,9,9,2,2,7,2,2},
164         {19,19,19,5,4,14,5,4},
165         {19,19,19,5,4,14,5,4},
166         {28,28,28,7,6,21,7,6},
167         {38,38,38,10,9,28,10,9},
168         {38,38,38,10,9,28,10,9},
169 };
170 static u8 rco_time_value[][8] = {
171         {0,0,0,0,0,0,0,0},
172         {0,0,0,0,0,0,0,0},
173         {9,2,0,2,0,7,1,1},
174         {19,5,1,5,2,16,3,2},
175         {19,5,1,5,2,16,3,2},
176         {30,9,3,9,4,25,6,4},
177         {40,12,4,12,5,34,12,5},
178         {40,12,4,12,5,34,12,5},
179 };
180
181 /*
182  * Printing configuration
183  */
184 /* Used for chipset type printing at boot time */
185 static char* chipset_capability[] = {
186         "ATA", "ATA 16",
187         "ATA 33", "ATA 66",
188         "ATA 100 (1st gen)", "ATA 100 (2nd gen)",
189         "ATA 133 (1st gen)", "ATA 133 (2nd gen)"
190 };
191
192 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
193 #include <linux/stat.h>
194 #include <linux/proc_fs.h>
195
196 static u8 sis_proc = 0;
197
198 static struct pci_dev *bmide_dev;
199
200 static char* cable_type[] = {
201         "80 pins",
202         "40 pins"
203 };
204
205 static char* recovery_time[] ={
206         "12 PCICLK", "1 PCICLK",
207         "2 PCICLK", "3 PCICLK",
208         "4 PCICLK", "5 PCICLCK",
209         "6 PCICLK", "7 PCICLCK",
210         "8 PCICLK", "9 PCICLCK",
211         "10 PCICLK", "11 PCICLK",
212         "13 PCICLK", "14 PCICLK",
213         "15 PCICLK", "15 PCICLK"
214 };
215
216 static char* active_time[] = {
217         "8 PCICLK", "1 PCICLCK",
218         "2 PCICLK", "3 PCICLK",
219         "4 PCICLK", "5 PCICLK",
220         "6 PCICLK", "12 PCICLK"
221 };
222
223 static char* cycle_time[] = {
224         "Reserved", "2 CLK",
225         "3 CLK", "4 CLK",
226         "5 CLK", "6 CLK",
227         "7 CLK", "8 CLK",
228         "9 CLK", "10 CLK",
229         "11 CLK", "12 CLK",
230         "13 CLK", "14 CLK",
231         "15 CLK", "16 CLK"
232 };
233
234 /* Generic add master or slave info function */
235 static char* get_drives_info (char *buffer, u8 pos)
236 {
237         u8 reg00, reg01, reg10, reg11; /* timing registers */
238         u32 regdw0, regdw1;
239         char* p = buffer;
240
241 /* Postwrite/Prefetch */
242         if (chipset_family < ATA_133) {
243                 pci_read_config_byte(bmide_dev, 0x4b, &reg00);
244                 p += sprintf(p, "Drive %d:        Postwrite %s \t \t Postwrite %s\n",
245                              pos, (reg00 & (0x10 << pos)) ? "Enabled" : "Disabled",
246                              (reg00 & (0x40 << pos)) ? "Enabled" : "Disabled");
247                 p += sprintf(p, "                Prefetch  %s \t \t Prefetch  %s\n",
248                              (reg00 & (0x01 << pos)) ? "Enabled" : "Disabled",
249                              (reg00 & (0x04 << pos)) ? "Enabled" : "Disabled");
250                 pci_read_config_byte(bmide_dev, 0x40+2*pos, &reg00);
251                 pci_read_config_byte(bmide_dev, 0x41+2*pos, &reg01);
252                 pci_read_config_byte(bmide_dev, 0x44+2*pos, &reg10);
253                 pci_read_config_byte(bmide_dev, 0x45+2*pos, &reg11);
254         } else {
255                 u32 reg54h;
256                 u8 drive_pci = 0x40;
257                 pci_read_config_dword(bmide_dev, 0x54, &reg54h);
258                 if (reg54h & 0x40000000) {
259                         // Configuration space remapped to 0x70
260                         drive_pci = 0x70;
261                 }
262                 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos, &regdw0);
263                 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos+8, &regdw1);
264
265                 p += sprintf(p, "Drive %d:\n", pos);
266         }
267
268
269 /* UDMA */
270         if (chipset_family >= ATA_133) {
271                 p += sprintf(p, "                UDMA %s \t \t \t UDMA %s\n",
272                              (regdw0 & 0x04) ? "Enabled" : "Disabled",
273                              (regdw1 & 0x04) ? "Enabled" : "Disabled");
274                 p += sprintf(p, "                UDMA Cycle Time    %s \t UDMA Cycle Time    %s\n",
275                              cycle_time[(regdw0 & 0xF0) >> 4],
276                              cycle_time[(regdw1 & 0xF0) >> 4]);
277         } else if (chipset_family >= ATA_33) {
278                 p += sprintf(p, "                UDMA %s \t \t \t UDMA %s\n",
279                              (reg01 & 0x80) ? "Enabled" : "Disabled",
280                              (reg11 & 0x80) ? "Enabled" : "Disabled");
281
282                 p += sprintf(p, "                UDMA Cycle Time    ");
283                 switch(chipset_family) {
284                         case ATA_33:    p += sprintf(p, cycle_time[(reg01 & 0x60) >> 5]); break;
285                         case ATA_66:
286                         case ATA_100a:  p += sprintf(p, cycle_time[(reg01 & 0x70) >> 4]); break;
287                         case ATA_100:
288                         case ATA_133a:  p += sprintf(p, cycle_time[reg01 & 0x0F]); break;
289                         default:        p += sprintf(p, "?"); break;
290                 }
291                 p += sprintf(p, " \t UDMA Cycle Time    ");
292                 switch(chipset_family) {
293                         case ATA_33:    p += sprintf(p, cycle_time[(reg11 & 0x60) >> 5]); break;
294                         case ATA_66:
295                         case ATA_100a:  p += sprintf(p, cycle_time[(reg11 & 0x70) >> 4]); break;
296                         case ATA_100:
297                         case ATA_133a:  p += sprintf(p, cycle_time[reg11 & 0x0F]); break;
298                         default:        p += sprintf(p, "?"); break;
299                 }
300                 p += sprintf(p, "\n");
301         }
302
303
304         if (chipset_family < ATA_133) { /* else case TODO */
305
306 /* Data Active */
307                 p += sprintf(p, "                Data Active Time   ");
308                 switch(chipset_family) {
309                         case ATA_16: /* confirmed */
310                         case ATA_33:
311                         case ATA_66:
312                         case ATA_100a: p += sprintf(p, active_time[reg01 & 0x07]); break;
313                         case ATA_100:
314                         case ATA_133a: p += sprintf(p, active_time[(reg00 & 0x70) >> 4]); break;
315                         default: p += sprintf(p, "?"); break;
316                 }
317                 p += sprintf(p, " \t Data Active Time   ");
318                 switch(chipset_family) {
319                         case ATA_16:
320                         case ATA_33:
321                         case ATA_66:
322                         case ATA_100a: p += sprintf(p, active_time[reg11 & 0x07]); break;
323                         case ATA_100:
324                         case ATA_133a: p += sprintf(p, active_time[(reg10 & 0x70) >> 4]); break;
325                         default: p += sprintf(p, "?"); break;
326                 }
327                 p += sprintf(p, "\n");
328
329 /* Data Recovery */
330         /* warning: may need (reg&0x07) for pre ATA66 chips */
331                 p += sprintf(p, "                Data Recovery Time %s \t Data Recovery Time %s\n",
332                              recovery_time[reg00 & 0x0f], recovery_time[reg10 & 0x0f]);
333         }
334
335         return p;
336 }
337
338 static char* get_masters_info(char* buffer)
339 {
340         return get_drives_info(buffer, 0);
341 }
342
343 static char* get_slaves_info(char* buffer)
344 {
345         return get_drives_info(buffer, 1);
346 }
347
348 /* Main get_info, called on /proc/ide/sis reads */
349 static int sis_get_info (char *buffer, char **addr, off_t offset, int count)
350 {
351         char *p = buffer;
352         int len;
353         u8 reg;
354         u16 reg2, reg3;
355
356         p += sprintf(p, "\nSiS 5513 ");
357         switch(chipset_family) {
358                 case ATA_16: p += sprintf(p, "DMA 16"); break;
359                 case ATA_33: p += sprintf(p, "Ultra 33"); break;
360                 case ATA_66: p += sprintf(p, "Ultra 66"); break;
361                 case ATA_100a:
362                 case ATA_100: p += sprintf(p, "Ultra 100"); break;
363                 case ATA_133a:
364                 case ATA_133: p += sprintf(p, "Ultra 133"); break;
365                 default: p+= sprintf(p, "Unknown???"); break;
366         }
367         p += sprintf(p, " chipset\n");
368         p += sprintf(p, "--------------- Primary Channel "
369                      "---------------- Secondary Channel "
370                      "-------------\n");
371
372 /* Status */
373         pci_read_config_byte(bmide_dev, 0x4a, &reg);
374         if (chipset_family == ATA_133) {
375                 pci_read_config_word(bmide_dev, 0x50, &reg2);
376                 pci_read_config_word(bmide_dev, 0x52, &reg3);
377         }
378         p += sprintf(p, "Channel Status: ");
379         if (chipset_family < ATA_66) {
380                 p += sprintf(p, "%s \t \t \t \t %s\n",
381                              (reg & 0x04) ? "On" : "Off",
382                              (reg & 0x02) ? "On" : "Off");
383         } else if (chipset_family < ATA_133) {
384                 p += sprintf(p, "%s \t \t \t \t %s \n",
385                              (reg & 0x02) ? "On" : "Off",
386                              (reg & 0x04) ? "On" : "Off");
387         } else { /* ATA_133 */
388                 p += sprintf(p, "%s \t \t \t \t %s \n",
389                              (reg2 & 0x02) ? "On" : "Off",
390                              (reg3 & 0x02) ? "On" : "Off");
391         }
392
393 /* Operation Mode */
394         pci_read_config_byte(bmide_dev, 0x09, &reg);
395         p += sprintf(p, "Operation Mode: %s \t \t \t %s \n",
396                      (reg & 0x01) ? "Native" : "Compatible",
397                      (reg & 0x04) ? "Native" : "Compatible");
398
399 /* 80-pin cable ? */
400         if (chipset_family >= ATA_133) {
401                 p += sprintf(p, "Cable Type:     %s \t \t \t %s\n",
402                              (reg2 & 0x01) ? cable_type[1] : cable_type[0],
403                              (reg3 & 0x01) ? cable_type[1] : cable_type[0]);
404         } else if (chipset_family > ATA_33) {
405                 pci_read_config_byte(bmide_dev, 0x48, &reg);
406                 p += sprintf(p, "Cable Type:     %s \t \t \t %s\n",
407                              (reg & 0x10) ? cable_type[1] : cable_type[0],
408                              (reg & 0x20) ? cable_type[1] : cable_type[0]);
409         }
410
411 /* Prefetch Count */
412         if (chipset_family < ATA_133) {
413                 pci_read_config_word(bmide_dev, 0x4c, &reg2);
414                 pci_read_config_word(bmide_dev, 0x4e, &reg3);
415                 p += sprintf(p, "Prefetch Count: %d \t \t \t \t %d\n",
416                              reg2, reg3);
417         }
418
419         p = get_masters_info(p);
420         p = get_slaves_info(p);
421
422         len = (p - buffer) - offset;
423         *addr = buffer + offset;
424
425         return len > count ? count : len;
426 }
427 #endif /* defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS) */
428
429 static u8 sis5513_ratemask (ide_drive_t *drive)
430 {
431         u8 rates[] = { 0, 0, 1, 2, 3, 3, 4, 4 };
432         u8 mode = rates[chipset_family];
433
434         if (!eighty_ninty_three(drive))
435                 mode = min(mode, (u8)1);
436         return mode;
437 }
438
439 /*
440  * Configuration functions
441  */
442 /* Enables per-drive prefetch and postwrite */
443 static void config_drive_art_rwp (ide_drive_t *drive)
444 {
445         ide_hwif_t *hwif        = HWIF(drive);
446         struct pci_dev *dev     = hwif->pci_dev;
447
448         u8 reg4bh               = 0;
449         u8 rw_prefetch          = (0x11 << drive->dn);
450
451         if (drive->media != ide_disk)
452                 return;
453         pci_read_config_byte(dev, 0x4b, &reg4bh);
454
455         if ((reg4bh & rw_prefetch) != rw_prefetch)
456                 pci_write_config_byte(dev, 0x4b, reg4bh|rw_prefetch);
457 }
458
459
460 /* Set per-drive active and recovery time */
461 static void config_art_rwp_pio (ide_drive_t *drive, u8 pio)
462 {
463         ide_hwif_t *hwif        = HWIF(drive);
464         struct pci_dev *dev     = hwif->pci_dev;
465
466         u8                      timing, drive_pci, test1, test2;
467
468         u16 eide_pio_timing[6] = {600, 390, 240, 180, 120, 90};
469         u16 xfer_pio = drive->id->eide_pio_modes;
470
471         config_drive_art_rwp(drive);
472         pio = ide_get_best_pio_mode(drive, 255, pio, NULL);
473
474         if (xfer_pio> 4)
475                 xfer_pio = 0;
476
477         if (drive->id->eide_pio_iordy > 0) {
478                 for (xfer_pio = 5;
479                         (xfer_pio > 0) &&
480                         (drive->id->eide_pio_iordy > eide_pio_timing[xfer_pio]);
481                         xfer_pio--);
482         } else {
483                 xfer_pio = (drive->id->eide_pio_modes & 4) ? 0x05 :
484                            (drive->id->eide_pio_modes & 2) ? 0x04 :
485                            (drive->id->eide_pio_modes & 1) ? 0x03 : xfer_pio;
486         }
487
488         timing = (xfer_pio >= pio) ? xfer_pio : pio;
489
490         /* In pre ATA_133 case, drives sit at 0x40 + 4*drive->dn */
491         drive_pci = 0x40;
492         /* In SiS962 case drives sit at (0x40 or 0x70) + 8*drive->dn) */
493         if (chipset_family >= ATA_133) {
494                 u32 reg54h;
495                 pci_read_config_dword(dev, 0x54, &reg54h);
496                 if (reg54h & 0x40000000) drive_pci = 0x70;
497                 drive_pci += ((drive->dn)*0x4);
498         } else {
499                 drive_pci += ((drive->dn)*0x2);
500         }
501
502         /* register layout changed with newer ATA100 chips */
503         if (chipset_family < ATA_100) {
504                 pci_read_config_byte(dev, drive_pci, &test1);
505                 pci_read_config_byte(dev, drive_pci+1, &test2);
506
507                 /* Clear active and recovery timings */
508                 test1 &= ~0x0F;
509                 test2 &= ~0x07;
510
511                 switch(timing) {
512                         case 4:         test1 |= 0x01; test2 |= 0x03; break;
513                         case 3:         test1 |= 0x03; test2 |= 0x03; break;
514                         case 2:         test1 |= 0x04; test2 |= 0x04; break;
515                         case 1:         test1 |= 0x07; test2 |= 0x06; break;
516                         default:        break;
517                 }
518                 pci_write_config_byte(dev, drive_pci, test1);
519                 pci_write_config_byte(dev, drive_pci+1, test2);
520         } else if (chipset_family < ATA_133) {
521                 switch(timing) { /*             active  recovery
522                                                   v     v */
523                         case 4:         test1 = 0x30|0x01; break;
524                         case 3:         test1 = 0x30|0x03; break;
525                         case 2:         test1 = 0x40|0x04; break;
526                         case 1:         test1 = 0x60|0x07; break;
527                         case 0:         test1 = 0x00; break;
528                         default:        break;
529                 }
530                 pci_write_config_byte(dev, drive_pci, test1);
531         } else { /* ATA_133 */
532                 u32 test3;
533                 pci_read_config_dword(dev, drive_pci, &test3);
534                 test3 &= 0xc0c00fff;
535                 if (test3 & 0x08) {
536                         test3 |= (unsigned long)ini_time_value[ATA_133][timing] << 12;
537                         test3 |= (unsigned long)act_time_value[ATA_133][timing] << 16;
538                         test3 |= (unsigned long)rco_time_value[ATA_133][timing] << 24;
539                 } else {
540                         test3 |= (unsigned long)ini_time_value[ATA_100][timing] << 12;
541                         test3 |= (unsigned long)act_time_value[ATA_100][timing] << 16;
542                         test3 |= (unsigned long)rco_time_value[ATA_100][timing] << 24;
543                 }
544                 pci_write_config_dword(dev, drive_pci, test3);
545         }
546 }
547
548 static int config_chipset_for_pio (ide_drive_t *drive, u8 pio)
549 {
550         if (pio == 255)
551                 pio = ide_find_best_mode(drive, XFER_PIO | XFER_EPIO) - XFER_PIO_0;
552         config_art_rwp_pio(drive, pio);
553         return ide_config_drive_speed(drive, XFER_PIO_0 + min_t(u8, pio, 4));
554 }
555
556 static int sis5513_tune_chipset (ide_drive_t *drive, u8 xferspeed)
557 {
558         ide_hwif_t *hwif        = HWIF(drive);
559         struct pci_dev *dev     = hwif->pci_dev;
560
561         u8 drive_pci, reg, speed;
562         u32 regdw;
563
564         speed = ide_rate_filter(sis5513_ratemask(drive), xferspeed);
565
566         /* See config_art_rwp_pio for drive pci config registers */
567         drive_pci = 0x40;
568         if (chipset_family >= ATA_133) {
569                 u32 reg54h;
570                 pci_read_config_dword(dev, 0x54, &reg54h);
571                 if (reg54h & 0x40000000) drive_pci = 0x70;
572                 drive_pci += ((drive->dn)*0x4);
573                 pci_read_config_dword(dev, (unsigned long)drive_pci, &regdw);
574                 /* Disable UDMA bit for non UDMA modes on UDMA chips */
575                 if (speed < XFER_UDMA_0) {
576                         regdw &= 0xfffffffb;
577                         pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
578                 }
579         
580         } else {
581                 drive_pci += ((drive->dn)*0x2);
582                 pci_read_config_byte(dev, drive_pci+1, &reg);
583                 /* Disable UDMA bit for non UDMA modes on UDMA chips */
584                 if ((speed < XFER_UDMA_0) && (chipset_family > ATA_16)) {
585                         reg &= 0x7F;
586                         pci_write_config_byte(dev, drive_pci+1, reg);
587                 }
588         }
589
590         /* Config chip for mode */
591         switch(speed) {
592                 case XFER_UDMA_6:
593                 case XFER_UDMA_5:
594                 case XFER_UDMA_4:
595                 case XFER_UDMA_3:
596                 case XFER_UDMA_2:
597                 case XFER_UDMA_1:
598                 case XFER_UDMA_0:
599                         if (chipset_family >= ATA_133) {
600                                 regdw |= 0x04;
601                                 regdw &= 0xfffff00f;
602                                 /* check if ATA133 enable */
603                                 if (regdw & 0x08) {
604                                         regdw |= (unsigned long)cycle_time_value[ATA_133][speed-XFER_UDMA_0] << 4;
605                                         regdw |= (unsigned long)cvs_time_value[ATA_133][speed-XFER_UDMA_0] << 8;
606                                 } else {
607                                 /* if ATA133 disable, we should not set speed above UDMA5 */
608                                         if (speed > XFER_UDMA_5)
609                                                 speed = XFER_UDMA_5;
610                                         regdw |= (unsigned long)cycle_time_value[ATA_100][speed-XFER_UDMA_0] << 4;
611                                         regdw |= (unsigned long)cvs_time_value[ATA_100][speed-XFER_UDMA_0] << 8;
612                                 }
613                                 pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
614                         } else {
615                                 /* Force the UDMA bit on if we want to use UDMA */
616                                 reg |= 0x80;
617                                 /* clean reg cycle time bits */
618                                 reg &= ~((0xFF >> (8 - cycle_time_range[chipset_family]))
619                                          << cycle_time_offset[chipset_family]);
620                                 /* set reg cycle time bits */
621                                 reg |= cycle_time_value[chipset_family][speed-XFER_UDMA_0]
622                                         << cycle_time_offset[chipset_family];
623                                 pci_write_config_byte(dev, drive_pci+1, reg);
624                         }
625                         break;
626                 case XFER_MW_DMA_2:
627                 case XFER_MW_DMA_1:
628                 case XFER_MW_DMA_0:
629                 case XFER_SW_DMA_2:
630                 case XFER_SW_DMA_1:
631                 case XFER_SW_DMA_0:
632                         break;
633                 case XFER_PIO_4: return((int) config_chipset_for_pio(drive, 4));
634                 case XFER_PIO_3: return((int) config_chipset_for_pio(drive, 3));
635                 case XFER_PIO_2: return((int) config_chipset_for_pio(drive, 2));
636                 case XFER_PIO_1: return((int) config_chipset_for_pio(drive, 1));
637                 case XFER_PIO_0:
638                 default:         return((int) config_chipset_for_pio(drive, 0));        
639         }
640
641         return ((int) ide_config_drive_speed(drive, speed));
642 }
643
644 static void sis5513_tune_drive (ide_drive_t *drive, u8 pio)
645 {
646         (void) config_chipset_for_pio(drive, pio);
647 }
648
649 /*
650  * ((id->hw_config & 0x4000|0x2000) && (HWIF(drive)->udma_four))
651  */
652 static int config_chipset_for_dma (ide_drive_t *drive)
653 {
654         u8 speed        = ide_dma_speed(drive, sis5513_ratemask(drive));
655
656 #ifdef DEBUG
657         printk("SIS5513: config_chipset_for_dma, drive %d, ultra %x\n",
658                drive->dn, drive->id->dma_ultra);
659 #endif
660
661         if (!(speed))
662                 return 0;
663
664         sis5513_tune_chipset(drive, speed);
665         return ide_dma_enable(drive);
666 }
667
668 static int sis5513_config_drive_xfer_rate (ide_drive_t *drive)
669 {
670         ide_hwif_t *hwif        = HWIF(drive);
671         struct hd_driveid *id   = drive->id;
672
673         drive->init_speed = 0;
674
675         if (id && (id->capability & 1) && drive->autodma) {
676
677                 if (ide_use_dma(drive)) {
678                         if (config_chipset_for_dma(drive))
679                                 return hwif->ide_dma_on(drive);
680                 }
681
682                 goto fast_ata_pio;
683
684         } else if ((id->capability & 8) || (id->field_valid & 2)) {
685 fast_ata_pio:
686                 sis5513_tune_drive(drive, 5);
687                 return hwif->ide_dma_off_quietly(drive);
688         }
689         /* IORDY not supported */
690         return 0;
691 }
692
693 /* initiates/aborts (U)DMA read/write operations on a drive. */
694 static int sis5513_config_xfer_rate (ide_drive_t *drive)
695 {
696         config_drive_art_rwp(drive);
697         config_art_rwp_pio(drive, 5);
698         return sis5513_config_drive_xfer_rate(drive);
699 }
700
701 /*
702   Future simpler config_xfer_rate :
703    When ide_find_best_mode is made bad-drive aware
704    - remove config_drive_xfer_rate and config_chipset_for_dma,
705    - replace config_xfer_rate with the following
706
707 static int sis5513_config_xfer_rate (ide_drive_t *drive)
708 {
709         u16 w80 = HWIF(drive)->udma_four;
710         u16 speed;
711
712         config_drive_art_rwp(drive);
713         config_art_rwp_pio(drive, 5);
714
715         speed = ide_find_best_mode(drive,
716                 XFER_PIO | XFER_EPIO | XFER_SWDMA | XFER_MWDMA |
717                 (chipset_family >= ATA_33 ? XFER_UDMA : 0) |
718                 (w80 && chipset_family >= ATA_66 ? XFER_UDMA_66 : 0) |
719                 (w80 && chipset_family >= ATA_100a ? XFER_UDMA_100 : 0) |
720                 (w80 && chipset_family >= ATA_133a ? XFER_UDMA_133 : 0));
721
722         sis5513_tune_chipset(drive, speed);
723
724         if (drive->autodma && (speed & XFER_MODE) != XFER_PIO)
725                 return HWIF(drive)->ide_dma_on(drive);
726         return HWIF(drive)->ide_dma_off_quietly(drive);
727 }
728 */
729
730 /* Chip detection and general config */
731 static unsigned int __devinit init_chipset_sis5513 (struct pci_dev *dev, const char *name)
732 {
733         struct pci_dev *host;
734         int i = 0;
735
736         chipset_family = 0;
737
738         for (i = 0; i < ARRAY_SIZE(SiSHostChipInfo) && !chipset_family; i++) {
739
740                 host = pci_find_device(PCI_VENDOR_ID_SI, SiSHostChipInfo[i].host_id, NULL);
741
742                 if (!host)
743                         continue;
744
745                 chipset_family = SiSHostChipInfo[i].chipset_family;
746
747                 /* Special case for SiS630 : 630S/ET is ATA_100a */
748                 if (SiSHostChipInfo[i].host_id == PCI_DEVICE_ID_SI_630) {
749                         u8 hostrev;
750                         pci_read_config_byte(host, PCI_REVISION_ID, &hostrev);
751                         if (hostrev >= 0x30)
752                                 chipset_family = ATA_100a;
753                 }
754         
755                 printk(KERN_INFO "SIS5513: %s %s controller\n",
756                          SiSHostChipInfo[i].name, chipset_capability[chipset_family]);
757         }
758
759         if (!chipset_family) { /* Belongs to pci-quirks */
760
761                         u32 idemisc;
762                         u16 trueid;
763
764                         /* Disable ID masking and register remapping */
765                         pci_read_config_dword(dev, 0x54, &idemisc);
766                         pci_write_config_dword(dev, 0x54, (idemisc & 0x7fffffff));
767                         pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
768                         pci_write_config_dword(dev, 0x54, idemisc);
769
770                         if (trueid == 0x5518) {
771                                 printk(KERN_INFO "SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller\n");
772                                 chipset_family = ATA_133;
773
774                                 /* Check for 5513 compability mapping
775                                  * We must use this, else the port enabled code will fail,
776                                  * as it expects the enablebits at 0x4a.
777                                  */
778                                 if ((idemisc & 0x40000000) == 0) {
779                                         pci_write_config_dword(dev, 0x54, idemisc | 0x40000000);
780                                         printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
781                                 }
782                         }
783         }
784
785         if (!chipset_family) { /* Belongs to pci-quirks */
786
787                         struct pci_dev *lpc_bridge;
788                         u16 trueid;
789                         u8 prefctl;
790                         u8 idecfg;
791                         u8 sbrev;
792
793                         pci_read_config_byte(dev, 0x4a, &idecfg);
794                         pci_write_config_byte(dev, 0x4a, idecfg | 0x10);
795                         pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
796                         pci_write_config_byte(dev, 0x4a, idecfg);
797
798                         if (trueid == 0x5517) { /* SiS 961/961B */
799
800                                 lpc_bridge = pci_find_slot(0x00, 0x10); /* Bus 0, Dev 2, Fn 0 */
801                                 pci_read_config_byte(lpc_bridge, PCI_REVISION_ID, &sbrev);
802                                 pci_read_config_byte(dev, 0x49, &prefctl);
803
804                                 if (sbrev == 0x10 && (prefctl & 0x80)) {
805                                         printk(KERN_INFO "SIS5513: SiS 961B MuTIOL IDE UDMA133 controller\n");
806                                         chipset_family = ATA_133a;
807                                 } else {
808                                         printk(KERN_INFO "SIS5513: SiS 961 MuTIOL IDE UDMA100 controller\n");
809                                         chipset_family = ATA_100;
810                                 }
811                         }
812         }
813
814         if (!chipset_family)
815                 return -1;
816
817         /* Make general config ops here
818            1/ tell IDE channels to operate in Compatibility mode only
819            2/ tell old chips to allow per drive IDE timings */
820
821         {
822                 u8 reg;
823                 u16 regw;
824
825                 switch(chipset_family) {
826                         case ATA_133:
827                                 /* SiS962 operation mode */
828                                 pci_read_config_word(dev, 0x50, &regw);
829                                 if (regw & 0x08)
830                                         pci_write_config_word(dev, 0x50, regw&0xfff7);
831                                 pci_read_config_word(dev, 0x52, &regw);
832                                 if (regw & 0x08)
833                                         pci_write_config_word(dev, 0x52, regw&0xfff7);
834                                 break;
835                         case ATA_133a:
836                         case ATA_100:
837                                 /* Fixup latency */
838                                 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x80);
839                                 /* Set compatibility bit */
840                                 pci_read_config_byte(dev, 0x49, &reg);
841                                 if (!(reg & 0x01)) {
842                                         pci_write_config_byte(dev, 0x49, reg|0x01);
843                                 }
844                                 break;
845                         case ATA_100a:
846                         case ATA_66:
847                                 /* Fixup latency */
848                                 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x10);
849
850                                 /* On ATA_66 chips the bit was elsewhere */
851                                 pci_read_config_byte(dev, 0x52, &reg);
852                                 if (!(reg & 0x04)) {
853                                         pci_write_config_byte(dev, 0x52, reg|0x04);
854                                 }
855                                 break;
856                         case ATA_33:
857                                 /* On ATA_33 we didn't have a single bit to set */
858                                 pci_read_config_byte(dev, 0x09, &reg);
859                                 if ((reg & 0x0f) != 0x00) {
860                                         pci_write_config_byte(dev, 0x09, reg&0xf0);
861                                 }
862                         case ATA_16:
863                                 /* force per drive recovery and active timings
864                                    needed on ATA_33 and below chips */
865                                 pci_read_config_byte(dev, 0x52, &reg);
866                                 if (!(reg & 0x08)) {
867                                         pci_write_config_byte(dev, 0x52, reg|0x08);
868                                 }
869                                 break;
870                 }
871
872 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
873                 if (!sis_proc) {
874                         sis_proc = 1;
875                         bmide_dev = dev;
876                         ide_pci_create_host_proc("sis", sis_get_info);
877                 }
878 #endif
879         }
880
881         return 0;
882 }
883
884 static unsigned int __devinit ata66_sis5513 (ide_hwif_t *hwif)
885 {
886         u8 ata66 = 0;
887
888         if (chipset_family >= ATA_133) {
889                 u16 regw = 0;
890                 u16 reg_addr = hwif->channel ? 0x52: 0x50;
891                 pci_read_config_word(hwif->pci_dev, reg_addr, &regw);
892                 ata66 = (regw & 0x8000) ? 0 : 1;
893         } else if (chipset_family >= ATA_66) {
894                 u8 reg48h = 0;
895                 u8 mask = hwif->channel ? 0x20 : 0x10;
896                 pci_read_config_byte(hwif->pci_dev, 0x48, &reg48h);
897                 ata66 = (reg48h & mask) ? 0 : 1;
898         }
899         return ata66;
900 }
901
902 static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
903 {
904         hwif->autodma = 0;
905
906         if (!hwif->irq)
907                 hwif->irq = hwif->channel ? 15 : 14;
908
909         hwif->tuneproc = &sis5513_tune_drive;
910         hwif->speedproc = &sis5513_tune_chipset;
911
912         if (!(hwif->dma_base)) {
913                 hwif->drives[0].autotune = 1;
914                 hwif->drives[1].autotune = 1;
915                 return;
916         }
917
918         hwif->atapi_dma = 1;
919         hwif->ultra_mask = 0x7f;
920         hwif->mwdma_mask = 0x07;
921         hwif->swdma_mask = 0x07;
922
923         if (!chipset_family)
924                 return;
925
926         if (!(hwif->udma_four))
927                 hwif->udma_four = ata66_sis5513(hwif);
928
929         if (chipset_family > ATA_16) {
930                 hwif->ide_dma_check = &sis5513_config_xfer_rate;
931                 if (!noautodma)
932                         hwif->autodma = 1;
933         }
934         hwif->drives[0].autodma = hwif->autodma;
935         hwif->drives[1].autodma = hwif->autodma;
936         return;
937 }
938
939 static ide_pci_device_t sis5513_chipset __devinitdata = {
940         .name           = "SIS5513",
941         .init_chipset   = init_chipset_sis5513,
942         .init_hwif      = init_hwif_sis5513,
943         .channels       = 2,
944         .autodma        = NOAUTODMA,
945         .enablebits     = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
946         .bootable       = ON_BOARD,
947 };
948
949 static int __devinit sis5513_init_one(struct pci_dev *dev, const struct pci_device_id *id)
950 {
951         return ide_setup_pci_device(dev, &sis5513_chipset);
952 }
953
954 static struct pci_device_id sis5513_pci_tbl[] = {
955         { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5513, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
956         { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5518, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
957         { 0, },
958 };
959 MODULE_DEVICE_TABLE(pci, sis5513_pci_tbl);
960
961 static struct pci_driver driver = {
962         .name           = "SIS_IDE",
963         .id_table       = sis5513_pci_tbl,
964         .probe          = sis5513_init_one,
965 };
966
967 static int sis5513_ide_init(void)
968 {
969         return ide_pci_register_driver(&driver);
970 }
971
972 module_init(sis5513_ide_init);
973
974 MODULE_AUTHOR("Lionel Bouton, L C Chang, Andre Hedrick, Vojtech Pavlik");
975 MODULE_DESCRIPTION("PCI driver module for SIS IDE");
976 MODULE_LICENSE("GPL");
977
978 /*
979  * TODO:
980  *      - CLEANUP
981  *      - Use drivers/ide/ide-timing.h !
982  *      - More checks in the config registers (force values instead of
983  *        relying on the BIOS setting them correctly).
984  *      - Further optimisations ?
985  *        . for example ATA66+ regs 0x48 & 0x4A
986  */