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MOXA linux-2.6.x / linux-2.6.9-uc0 from sdlinux-moxaart.tgz
[linux-2.6.9-moxart.git] / drivers / ide / pci / sis5513.c
blob964f80604e27a71d1875464f27a99b381d462500
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/config.h>
48 #include <linux/types.h>
49 #include <linux/module.h>
50 #include <linux/kernel.h>
51 #include <linux/delay.h>
52 #include <linux/timer.h>
53 #include <linux/mm.h>
54 #include <linux/ioport.h>
55 #include <linux/blkdev.h>
56 #include <linux/hdreg.h>
57
58 #include <linux/interrupt.h>
59 #include <linux/pci.h>
60 #include <linux/init.h>
61 #include <linux/ide.h>
62
63 #include <asm/irq.h>
64
65 #include "ide-timing.h"
66
67 #define DISPLAY_SIS_TIMINGS
68
69 /* registers layout and init values are chipset family dependant */
70
71 #define ATA_16 0x01
72 #define ATA_33 0x02
73 #define ATA_66 0x03
74 #define ATA_100a 0x04 // SiS730/SiS550 is ATA100 with ATA66 layout
75 #define ATA_100 0x05
76 #define ATA_133a 0x06 // SiS961b with 133 support
77 #define ATA_133 0x07 // SiS962/963
78
79 static u8 chipset_family;
80
81 /*
82 * Devices supported
83 */
84 static const struct {
85 const char *name;
86 u16 host_id;
87 u8 chipset_family;
88 u8 flags;
89 } SiSHostChipInfo[] = {
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 { "SiS551x", PCI_DEVICE_ID_SI_5511, ATA_16 },
115 };
116
117 /* Cycle time bits and values vary across chip dma capabilities
118 These three arrays hold the register layout and the values to set.
119 Indexed by chipset_family and (dma_mode - XFER_UDMA_0) */
120
121 /* {0, ATA_16, ATA_33, ATA_66, ATA_100a, ATA_100, ATA_133} */
122 static u8 cycle_time_offset[] = {0,0,5,4,4,0,0};
123 static u8 cycle_time_range[] = {0,0,2,3,3,4,4};
124 static u8 cycle_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
125 {0,0,0,0,0,0,0}, /* no udma */
126 {0,0,0,0,0,0,0}, /* no udma */
127 {3,2,1,0,0,0,0}, /* ATA_33 */
128 {7,5,3,2,1,0,0}, /* ATA_66 */
129 {7,5,3,2,1,0,0}, /* ATA_100a (730 specific), differences are on cycle_time range and offset */
130 {11,7,5,4,2,1,0}, /* ATA_100 */
131 {15,10,7,5,3,2,1}, /* ATA_133a (earliest 691 southbridges) */
132 {15,10,7,5,3,2,1}, /* ATA_133 */
133 };
134 /* CRC Valid Setup Time vary across IDE clock setting 33/66/100/133
135 See SiS962 data sheet for more detail */
136 static u8 cvs_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
137 {0,0,0,0,0,0,0}, /* no udma */
138 {0,0,0,0,0,0,0}, /* no udma */
139 {2,1,1,0,0,0,0},
140 {4,3,2,1,0,0,0},
141 {4,3,2,1,0,0,0},
142 {6,4,3,1,1,1,0},
143 {9,6,4,2,2,2,2},
144 {9,6,4,2,2,2,2},
145 };
146 /* Initialize time, Active time, Recovery time vary across
147 IDE clock settings. These 3 arrays hold the register value
148 for PIO0/1/2/3/4 and DMA0/1/2 mode in order */
149 static u8 ini_time_value[][8] = {
150 {0,0,0,0,0,0,0,0},
151 {0,0,0,0,0,0,0,0},
152 {2,1,0,0,0,1,0,0},
153 {4,3,1,1,1,3,1,1},
154 {4,3,1,1,1,3,1,1},
155 {6,4,2,2,2,4,2,2},
156 {9,6,3,3,3,6,3,3},
157 {9,6,3,3,3,6,3,3},
158 };
159 static u8 act_time_value[][8] = {
160 {0,0,0,0,0,0,0,0},
161 {0,0,0,0,0,0,0,0},
162 {9,9,9,2,2,7,2,2},
163 {19,19,19,5,4,14,5,4},
164 {19,19,19,5,4,14,5,4},
165 {28,28,28,7,6,21,7,6},
166 {38,38,38,10,9,28,10,9},
167 {38,38,38,10,9,28,10,9},
168 };
169 static u8 rco_time_value[][8] = {
170 {0,0,0,0,0,0,0,0},
171 {0,0,0,0,0,0,0,0},
172 {9,2,0,2,0,7,1,1},
173 {19,5,1,5,2,16,3,2},
174 {19,5,1,5,2,16,3,2},
175 {30,9,3,9,4,25,6,4},
176 {40,12,4,12,5,34,12,5},
177 {40,12,4,12,5,34,12,5},
178 };
179
180 /*
181 * Printing configuration
182 */
183 /* Used for chipset type printing at boot time */
184 static char* chipset_capability[] = {
185 "ATA", "ATA 16",
186 "ATA 33", "ATA 66",
187 "ATA 100 (1st gen)", "ATA 100 (2nd gen)",
188 "ATA 133 (1st gen)", "ATA 133 (2nd gen)"
189 };
190
191 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
192 #include <linux/stat.h>
193 #include <linux/proc_fs.h>
194
195 static u8 sis_proc = 0;
196
197 static struct pci_dev *bmide_dev;
198
199 static char* cable_type[] = {
200 "80 pins",
201 "40 pins"
202 };
203
204 static char* recovery_time[] ={
205 "12 PCICLK", "1 PCICLK",
206 "2 PCICLK", "3 PCICLK",
207 "4 PCICLK", "5 PCICLCK",
208 "6 PCICLK", "7 PCICLCK",
209 "8 PCICLK", "9 PCICLCK",
210 "10 PCICLK", "11 PCICLK",
211 "13 PCICLK", "14 PCICLK",
212 "15 PCICLK", "15 PCICLK"
213 };
214
215 static char* active_time[] = {
216 "8 PCICLK", "1 PCICLCK",
217 "2 PCICLK", "3 PCICLK",
218 "4 PCICLK", "5 PCICLK",
219 "6 PCICLK", "12 PCICLK"
220 };
221
222 static char* cycle_time[] = {
223 "Reserved", "2 CLK",
224 "3 CLK", "4 CLK",
225 "5 CLK", "6 CLK",
226 "7 CLK", "8 CLK",
227 "9 CLK", "10 CLK",
228 "11 CLK", "12 CLK",
229 "13 CLK", "14 CLK",
230 "15 CLK", "16 CLK"
231 };
232
233 /* Generic add master or slave info function */
234 static char* get_drives_info (char *buffer, u8 pos)
235 {
236 u8 reg00, reg01, reg10, reg11; /* timing registers */
237 u32 regdw0, regdw1;
238 char* p = buffer;
239
240 /* Postwrite/Prefetch */
241 if (chipset_family < ATA_133) {
242 pci_read_config_byte(bmide_dev, 0x4b, &reg00);
243 p += sprintf(p, "Drive %d: Postwrite %s \t \t Postwrite %s\n",
244 pos, (reg00 & (0x10 << pos)) ? "Enabled" : "Disabled",
245 (reg00 & (0x40 << pos)) ? "Enabled" : "Disabled");
246 p += sprintf(p, " Prefetch %s \t \t Prefetch %s\n",
247 (reg00 & (0x01 << pos)) ? "Enabled" : "Disabled",
248 (reg00 & (0x04 << pos)) ? "Enabled" : "Disabled");
249 pci_read_config_byte(bmide_dev, 0x40+2*pos, &reg00);
250 pci_read_config_byte(bmide_dev, 0x41+2*pos, &reg01);
251 pci_read_config_byte(bmide_dev, 0x44+2*pos, &reg10);
252 pci_read_config_byte(bmide_dev, 0x45+2*pos, &reg11);
253 } else {
254 u32 reg54h;
255 u8 drive_pci = 0x40;
256 pci_read_config_dword(bmide_dev, 0x54, &reg54h);
257 if (reg54h & 0x40000000) {
258 // Configuration space remapped to 0x70
259 drive_pci = 0x70;
260 }
261 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos, &regdw0);
262 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos+8, &regdw1);
263
264 p += sprintf(p, "Drive %d:\n", pos);
265 }
266
267
268 /* UDMA */
269 if (chipset_family >= ATA_133) {
270 p += sprintf(p, " UDMA %s \t \t \t UDMA %s\n",
271 (regdw0 & 0x04) ? "Enabled" : "Disabled",
272 (regdw1 & 0x04) ? "Enabled" : "Disabled");
273 p += sprintf(p, " UDMA Cycle Time %s \t UDMA Cycle Time %s\n",
274 cycle_time[(regdw0 & 0xF0) >> 4],
275 cycle_time[(regdw1 & 0xF0) >> 4]);
276 } else if (chipset_family >= ATA_33) {
277 p += sprintf(p, " UDMA %s \t \t \t UDMA %s\n",
278 (reg01 & 0x80) ? "Enabled" : "Disabled",
279 (reg11 & 0x80) ? "Enabled" : "Disabled");
280
281 p += sprintf(p, " UDMA Cycle Time ");
282 switch(chipset_family) {
283 case ATA_33: p += sprintf(p, cycle_time[(reg01 & 0x60) >> 5]); break;
284 case ATA_66:
285 case ATA_100a: p += sprintf(p, cycle_time[(reg01 & 0x70) >> 4]); break;
286 case ATA_100:
287 case ATA_133a: p += sprintf(p, cycle_time[reg01 & 0x0F]); break;
288 default: p += sprintf(p, "?"); break;
289 }
290 p += sprintf(p, " \t UDMA Cycle Time ");
291 switch(chipset_family) {
292 case ATA_33: p += sprintf(p, cycle_time[(reg11 & 0x60) >> 5]); break;
293 case ATA_66:
294 case ATA_100a: p += sprintf(p, cycle_time[(reg11 & 0x70) >> 4]); break;
295 case ATA_100:
296 case ATA_133a: p += sprintf(p, cycle_time[reg11 & 0x0F]); break;
297 default: p += sprintf(p, "?"); break;
298 }
299 p += sprintf(p, "\n");
300 }
301
302
303 if (chipset_family < ATA_133) { /* else case TODO */
304
305 /* Data Active */
306 p += sprintf(p, " Data Active Time ");
307 switch(chipset_family) {
308 case ATA_16: /* confirmed */
309 case ATA_33:
310 case ATA_66:
311 case ATA_100a: p += sprintf(p, active_time[reg01 & 0x07]); break;
312 case ATA_100:
313 case ATA_133a: p += sprintf(p, active_time[(reg00 & 0x70) >> 4]); break;
314 default: p += sprintf(p, "?"); break;
315 }
316 p += sprintf(p, " \t Data Active Time ");
317 switch(chipset_family) {
318 case ATA_16:
319 case ATA_33:
320 case ATA_66:
321 case ATA_100a: p += sprintf(p, active_time[reg11 & 0x07]); break;
322 case ATA_100:
323 case ATA_133a: p += sprintf(p, active_time[(reg10 & 0x70) >> 4]); break;
324 default: p += sprintf(p, "?"); break;
325 }
326 p += sprintf(p, "\n");
327
328 /* Data Recovery */
329 /* warning: may need (reg&0x07) for pre ATA66 chips */
330 p += sprintf(p, " Data Recovery Time %s \t Data Recovery Time %s\n",
331 recovery_time[reg00 & 0x0f], recovery_time[reg10 & 0x0f]);
332 }
333
334 return p;
335 }
336
337 static char* get_masters_info(char* buffer)
338 {
339 return get_drives_info(buffer, 0);
340 }
341
342 static char* get_slaves_info(char* buffer)
343 {
344 return get_drives_info(buffer, 1);
345 }
346
347 /* Main get_info, called on /proc/ide/sis reads */
348 static int sis_get_info (char *buffer, char **addr, off_t offset, int count)
349 {
350 char *p = buffer;
351 int len;
352 u8 reg;
353 u16 reg2, reg3;
354
355 p += sprintf(p, "\nSiS 5513 ");
356 switch(chipset_family) {
357 case ATA_16: p += sprintf(p, "DMA 16"); break;
358 case ATA_33: p += sprintf(p, "Ultra 33"); break;
359 case ATA_66: p += sprintf(p, "Ultra 66"); break;
360 case ATA_100a:
361 case ATA_100: p += sprintf(p, "Ultra 100"); break;
362 case ATA_133a:
363 case ATA_133: p += sprintf(p, "Ultra 133"); break;
364 default: p+= sprintf(p, "Unknown???"); break;
365 }
366 p += sprintf(p, " chipset\n");
367 p += sprintf(p, "--------------- Primary Channel "
368 "---------------- Secondary Channel "
369 "-------------\n");
370
371 /* Status */
372 pci_read_config_byte(bmide_dev, 0x4a, &reg);
373 if (chipset_family == ATA_133) {
374 pci_read_config_word(bmide_dev, 0x50, &reg2);
375 pci_read_config_word(bmide_dev, 0x52, &reg3);
376 }
377 p += sprintf(p, "Channel Status: ");
378 if (chipset_family < ATA_66) {
379 p += sprintf(p, "%s \t \t \t \t %s\n",
380 (reg & 0x04) ? "On" : "Off",
381 (reg & 0x02) ? "On" : "Off");
382 } else if (chipset_family < ATA_133) {
383 p += sprintf(p, "%s \t \t \t \t %s \n",
384 (reg & 0x02) ? "On" : "Off",
385 (reg & 0x04) ? "On" : "Off");
386 } else { /* ATA_133 */
387 p += sprintf(p, "%s \t \t \t \t %s \n",
388 (reg2 & 0x02) ? "On" : "Off",
389 (reg3 & 0x02) ? "On" : "Off");
390 }
391
392 /* Operation Mode */
393 pci_read_config_byte(bmide_dev, 0x09, &reg);
394 p += sprintf(p, "Operation Mode: %s \t \t \t %s \n",
395 (reg & 0x01) ? "Native" : "Compatible",
396 (reg & 0x04) ? "Native" : "Compatible");
397
398 /* 80-pin cable ? */
399 if (chipset_family >= ATA_133) {
400 p += sprintf(p, "Cable Type: %s \t \t \t %s\n",
401 (reg2 & 0x01) ? cable_type[1] : cable_type[0],
402 (reg3 & 0x01) ? cable_type[1] : cable_type[0]);
403 } else if (chipset_family > ATA_33) {
404 pci_read_config_byte(bmide_dev, 0x48, &reg);
405 p += sprintf(p, "Cable Type: %s \t \t \t %s\n",
406 (reg & 0x10) ? cable_type[1] : cable_type[0],
407 (reg & 0x20) ? cable_type[1] : cable_type[0]);
408 }
409
410 /* Prefetch Count */
411 if (chipset_family < ATA_133) {
412 pci_read_config_word(bmide_dev, 0x4c, &reg2);
413 pci_read_config_word(bmide_dev, 0x4e, &reg3);
414 p += sprintf(p, "Prefetch Count: %d \t \t \t \t %d\n",
415 reg2, reg3);
416 }
417
418 p = get_masters_info(p);
419 p = get_slaves_info(p);
420
421 len = (p - buffer) - offset;
422 *addr = buffer + offset;
423
424 return len > count ? count : len;
425 }
426 #endif /* defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS) */
427
428 static u8 sis5513_ratemask (ide_drive_t *drive)
429 {
430 u8 rates[] = { 0, 0, 1, 2, 3, 3, 4, 4 };
431 u8 mode = rates[chipset_family];
432
433 if (!eighty_ninty_three(drive))
434 mode = min(mode, (u8)1);
435 return mode;
436 }
437
438 /*
439 * Configuration functions
440 */
441 /* Enables per-drive prefetch and postwrite */
442 static void config_drive_art_rwp (ide_drive_t *drive)
443 {
444 ide_hwif_t *hwif = HWIF(drive);
445 struct pci_dev *dev = hwif->pci_dev;
446
447 u8 reg4bh = 0;
448 u8 rw_prefetch = (0x11 << drive->dn);
449
450 if (drive->media != ide_disk)
451 return;
452 pci_read_config_byte(dev, 0x4b, &reg4bh);
453
454 if ((reg4bh & rw_prefetch) != rw_prefetch)
455 pci_write_config_byte(dev, 0x4b, reg4bh|rw_prefetch);
456 }
457
458
459 /* Set per-drive active and recovery time */
460 static void config_art_rwp_pio (ide_drive_t *drive, u8 pio)
461 {
462 ide_hwif_t *hwif = HWIF(drive);
463 struct pci_dev *dev = hwif->pci_dev;
464
465 u8 timing, drive_pci, test1, test2;
466
467 u16 eide_pio_timing[6] = {600, 390, 240, 180, 120, 90};
468 u16 xfer_pio = drive->id->eide_pio_modes;
469
470 config_drive_art_rwp(drive);
471 pio = ide_get_best_pio_mode(drive, 255, pio, NULL);
472
473 if (xfer_pio> 4)
474 xfer_pio = 0;
475
476 if (drive->id->eide_pio_iordy > 0) {
477 for (xfer_pio = 5;
478 (xfer_pio > 0) &&
479 (drive->id->eide_pio_iordy > eide_pio_timing[xfer_pio]);
480 xfer_pio--);
481 } else {
482 xfer_pio = (drive->id->eide_pio_modes & 4) ? 0x05 :
483 (drive->id->eide_pio_modes & 2) ? 0x04 :
484 (drive->id->eide_pio_modes & 1) ? 0x03 : xfer_pio;
485 }
486
487 timing = (xfer_pio >= pio) ? xfer_pio : pio;
488
489 /* In pre ATA_133 case, drives sit at 0x40 + 4*drive->dn */
490 drive_pci = 0x40;
491 /* In SiS962 case drives sit at (0x40 or 0x70) + 8*drive->dn) */
492 if (chipset_family >= ATA_133) {
493 u32 reg54h;
494 pci_read_config_dword(dev, 0x54, &reg54h);
495 if (reg54h & 0x40000000) drive_pci = 0x70;
496 drive_pci += ((drive->dn)*0x4);
497 } else {
498 drive_pci += ((drive->dn)*0x2);
499 }
500
501 /* register layout changed with newer ATA100 chips */
502 if (chipset_family < ATA_100) {
503 pci_read_config_byte(dev, drive_pci, &test1);
504 pci_read_config_byte(dev, drive_pci+1, &test2);
505
506 /* Clear active and recovery timings */
507 test1 &= ~0x0F;
508 test2 &= ~0x07;
509
510 switch(timing) {
511 case 4: test1 |= 0x01; test2 |= 0x03; break;
512 case 3: test1 |= 0x03; test2 |= 0x03; break;
513 case 2: test1 |= 0x04; test2 |= 0x04; break;
514 case 1: test1 |= 0x07; test2 |= 0x06; break;
515 default: break;
516 }
517 pci_write_config_byte(dev, drive_pci, test1);
518 pci_write_config_byte(dev, drive_pci+1, test2);
519 } else if (chipset_family < ATA_133) {
520 switch(timing) { /* active recovery
521 v v */
522 case 4: test1 = 0x30|0x01; break;
523 case 3: test1 = 0x30|0x03; break;
524 case 2: test1 = 0x40|0x04; break;
525 case 1: test1 = 0x60|0x07; break;
526 default: break;
527 }
528 pci_write_config_byte(dev, drive_pci, test1);
529 } else { /* ATA_133 */
530 u32 test3;
531 pci_read_config_dword(dev, drive_pci, &test3);
532 test3 &= 0xc0c00fff;
533 if (test3 & 0x08) {
534 test3 |= (unsigned long)ini_time_value[ATA_133][timing] << 12;
535 test3 |= (unsigned long)act_time_value[ATA_133][timing] << 16;
536 test3 |= (unsigned long)rco_time_value[ATA_133][timing] << 24;
537 } else {
538 test3 |= (unsigned long)ini_time_value[ATA_100][timing] << 12;
539 test3 |= (unsigned long)act_time_value[ATA_100][timing] << 16;
540 test3 |= (unsigned long)rco_time_value[ATA_100][timing] << 24;
541 }
542 pci_write_config_dword(dev, drive_pci, test3);
543 }
544 }
545
546 static int config_chipset_for_pio (ide_drive_t *drive, u8 pio)
547 {
548 if (pio == 255)
549 pio = ide_find_best_mode(drive, XFER_PIO | XFER_EPIO) - XFER_PIO_0;
550 config_art_rwp_pio(drive, pio);
551 return ide_config_drive_speed(drive, XFER_PIO_0 + min_t(u8, pio, 4));
552 }
553
554 static int sis5513_tune_chipset (ide_drive_t *drive, u8 xferspeed)
555 {
556 ide_hwif_t *hwif = HWIF(drive);
557 struct pci_dev *dev = hwif->pci_dev;
558
559 u8 drive_pci, reg, speed;
560 u32 regdw;
561
562 speed = ide_rate_filter(sis5513_ratemask(drive), xferspeed);
563
564 /* See config_art_rwp_pio for drive pci config registers */
565 drive_pci = 0x40;
566 if (chipset_family >= ATA_133) {
567 u32 reg54h;
568 pci_read_config_dword(dev, 0x54, &reg54h);
569 if (reg54h & 0x40000000) drive_pci = 0x70;
570 drive_pci += ((drive->dn)*0x4);
571 pci_read_config_dword(dev, (unsigned long)drive_pci, &regdw);
572 /* Disable UDMA bit for non UDMA modes on UDMA chips */
573 if (speed < XFER_UDMA_0) {
574 regdw &= 0xfffffffb;
575 pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
576 }
577
578 } else {
579 drive_pci += ((drive->dn)*0x2);
580 pci_read_config_byte(dev, drive_pci+1, &reg);
581 /* Disable UDMA bit for non UDMA modes on UDMA chips */
582 if ((speed < XFER_UDMA_0) && (chipset_family > ATA_16)) {
583 reg &= 0x7F;
584 pci_write_config_byte(dev, drive_pci+1, reg);
585 }
586 }
587
588 /* Config chip for mode */
589 switch(speed) {
590 case XFER_UDMA_6:
591 case XFER_UDMA_5:
592 case XFER_UDMA_4:
593 case XFER_UDMA_3:
594 case XFER_UDMA_2:
595 case XFER_UDMA_1:
596 case XFER_UDMA_0:
597 if (chipset_family >= ATA_133) {
598 regdw |= 0x04;
599 regdw &= 0xfffff00f;
600 /* check if ATA133 enable */
601 if (regdw & 0x08) {
602 regdw |= (unsigned long)cycle_time_value[ATA_133][speed-XFER_UDMA_0] << 4;
603 regdw |= (unsigned long)cvs_time_value[ATA_133][speed-XFER_UDMA_0] << 8;
604 } else {
605 /* if ATA133 disable, we should not set speed above UDMA5 */
606 if (speed > XFER_UDMA_5)
607 speed = XFER_UDMA_5;
608 regdw |= (unsigned long)cycle_time_value[ATA_100][speed-XFER_UDMA_0] << 4;
609 regdw |= (unsigned long)cvs_time_value[ATA_100][speed-XFER_UDMA_0] << 8;
610 }
611 pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
612 } else {
613 /* Force the UDMA bit on if we want to use UDMA */
614 reg |= 0x80;
615 /* clean reg cycle time bits */
616 reg &= ~((0xFF >> (8 - cycle_time_range[chipset_family]))
617 << cycle_time_offset[chipset_family]);
618 /* set reg cycle time bits */
619 reg |= cycle_time_value[chipset_family][speed-XFER_UDMA_0]
620 << cycle_time_offset[chipset_family];
621 pci_write_config_byte(dev, drive_pci+1, reg);
622 }
623 break;
624 case XFER_MW_DMA_2:
625 case XFER_MW_DMA_1:
626 case XFER_MW_DMA_0:
627 case XFER_SW_DMA_2:
628 case XFER_SW_DMA_1:
629 case XFER_SW_DMA_0:
630 break;
631 case XFER_PIO_4: return((int) config_chipset_for_pio(drive, 4));
632 case XFER_PIO_3: return((int) config_chipset_for_pio(drive, 3));
633 case XFER_PIO_2: return((int) config_chipset_for_pio(drive, 2));
634 case XFER_PIO_1: return((int) config_chipset_for_pio(drive, 1));
635 case XFER_PIO_0:
636 default: return((int) config_chipset_for_pio(drive, 0));
637 }
638
639 return ((int) ide_config_drive_speed(drive, speed));
640 }
641
642 static void sis5513_tune_drive (ide_drive_t *drive, u8 pio)
643 {
644 (void) config_chipset_for_pio(drive, pio);
645 }
646
647 /*
648 * ((id->hw_config & 0x4000|0x2000) && (HWIF(drive)->udma_four))
649 */
650 static int config_chipset_for_dma (ide_drive_t *drive)
651 {
652 u8 speed = ide_dma_speed(drive, sis5513_ratemask(drive));
653
654 #ifdef DEBUG
655 printk("SIS5513: config_chipset_for_dma, drive %d, ultra %x\n",
656 drive->dn, drive->id->dma_ultra);
657 #endif
658
659 if (!(speed))
660 return 0;
661
662 sis5513_tune_chipset(drive, speed);
663 return ide_dma_enable(drive);
664 }
665
666 static int sis5513_config_drive_xfer_rate (ide_drive_t *drive)
667 {
668 ide_hwif_t *hwif = HWIF(drive);
669 struct hd_driveid *id = drive->id;
670
671 drive->init_speed = 0;
672
673 if (id && (id->capability & 1) && drive->autodma) {
674 /* Consult the list of known "bad" drives */
675 if (__ide_dma_bad_drive(drive))
676 goto fast_ata_pio;
677 if (id->field_valid & 4) {
678 if (id->dma_ultra & hwif->ultra_mask) {
679 /* Force if Capable UltraDMA */
680 int dma = config_chipset_for_dma(drive);
681 if ((id->field_valid & 2) && !dma)
682 goto try_dma_modes;
683 }
684 } else if (id->field_valid & 2) {
685 try_dma_modes:
686 if ((id->dma_mword & hwif->mwdma_mask) ||
687 (id->dma_1word & hwif->swdma_mask)) {
688 /* Force if Capable regular DMA modes */
689 if (!config_chipset_for_dma(drive))
690 goto no_dma_set;
691 }
692 } else if (__ide_dma_good_drive(drive) &&
693 (id->eide_dma_time < 150)) {
694 /* Consult the list of known "good" drives */
695 if (!config_chipset_for_dma(drive))
696 goto no_dma_set;
697 } else {
698 goto fast_ata_pio;
699 }
700 return hwif->ide_dma_on(drive);
701 } else if ((id->capability & 8) || (id->field_valid & 2)) {
702 fast_ata_pio:
703 no_dma_set:
704 sis5513_tune_drive(drive, 5);
705 return hwif->ide_dma_off_quietly(drive);
706 }
707 /* IORDY not supported */
708 return 0;
709 }
710
711 /* initiates/aborts (U)DMA read/write operations on a drive. */
712 static int sis5513_config_xfer_rate (ide_drive_t *drive)
713 {
714 config_drive_art_rwp(drive);
715 config_art_rwp_pio(drive, 5);
716 return sis5513_config_drive_xfer_rate(drive);
717 }
718
719 /*
720 Future simpler config_xfer_rate :
721 When ide_find_best_mode is made bad-drive aware
722 - remove config_drive_xfer_rate and config_chipset_for_dma,
723 - replace config_xfer_rate with the following
724
725 static int sis5513_config_xfer_rate (ide_drive_t *drive)
726 {
727 u16 w80 = HWIF(drive)->udma_four;
728 u16 speed;
729
730 config_drive_art_rwp(drive);
731 config_art_rwp_pio(drive, 5);
732
733 speed = ide_find_best_mode(drive,
734 XFER_PIO | XFER_EPIO | XFER_SWDMA | XFER_MWDMA |
735 (chipset_family >= ATA_33 ? XFER_UDMA : 0) |
736 (w80 && chipset_family >= ATA_66 ? XFER_UDMA_66 : 0) |
737 (w80 && chipset_family >= ATA_100a ? XFER_UDMA_100 : 0) |
738 (w80 && chipset_family >= ATA_133a ? XFER_UDMA_133 : 0));
739
740 sis5513_tune_chipset(drive, speed);
741
742 if (drive->autodma && (speed & XFER_MODE) != XFER_PIO)
743 return HWIF(drive)->ide_dma_on(drive);
744 return HWIF(drive)->ide_dma_off_quietly(drive);
745 }
746 */
747
748 /* Chip detection and general config */
749 static unsigned int __init init_chipset_sis5513 (struct pci_dev *dev, const char *name)
750 {
751 struct pci_dev *host;
752 int i = 0;
753
754 chipset_family = 0;
755
756 for (i = 0; i < ARRAY_SIZE(SiSHostChipInfo) && !chipset_family; i++) {
757
758 host = pci_find_device(PCI_VENDOR_ID_SI, SiSHostChipInfo[i].host_id, NULL);
759
760 if (!host)
761 continue;
762
763 chipset_family = SiSHostChipInfo[i].chipset_family;
764
765 /* Special case for SiS630 : 630S/ET is ATA_100a */
766 if (SiSHostChipInfo[i].host_id == PCI_DEVICE_ID_SI_630) {
767 u8 hostrev;
768 pci_read_config_byte(host, PCI_REVISION_ID, &hostrev);
769 if (hostrev >= 0x30)
770 chipset_family = ATA_100a;
771 }
772
773 printk(KERN_INFO "SIS5513: %s %s controller\n",
774 SiSHostChipInfo[i].name, chipset_capability[chipset_family]);
775 }
776
777 if (!chipset_family) { /* Belongs to pci-quirks */
778
779 u32 idemisc;
780 u16 trueid;
781
782 /* Disable ID masking and register remapping */
783 pci_read_config_dword(dev, 0x54, &idemisc);
784 pci_write_config_dword(dev, 0x54, (idemisc & 0x7fffffff));
785 pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
786 pci_write_config_dword(dev, 0x54, idemisc);
787
788 if (trueid == 0x5518) {
789 printk(KERN_INFO "SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller\n");
790 chipset_family = ATA_133;
791
792 /* Check for 5513 compability mapping
793 * We must use this, else the port enabled code will fail,
794 * as it expects the enablebits at 0x4a.
795 */
796 if ((idemisc & 0x40000000) == 0) {
797 pci_write_config_dword(dev, 0x54, idemisc | 0x40000000);
798 printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
799 }
800 }
801 }
802
803 if (!chipset_family) { /* Belongs to pci-quirks */
804
805 struct pci_dev *lpc_bridge;
806 u16 trueid;
807 u8 prefctl;
808 u8 idecfg;
809 u8 sbrev;
810
811 pci_read_config_byte(dev, 0x4a, &idecfg);
812 pci_write_config_byte(dev, 0x4a, idecfg | 0x10);
813 pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
814 pci_write_config_byte(dev, 0x4a, idecfg);
815
816 if (trueid == 0x5517) { /* SiS 961/961B */
817
818 lpc_bridge = pci_find_slot(0x00, 0x10); /* Bus 0, Dev 2, Fn 0 */
819 pci_read_config_byte(lpc_bridge, PCI_REVISION_ID, &sbrev);
820 pci_read_config_byte(dev, 0x49, &prefctl);
821
822 if (sbrev == 0x10 && (prefctl & 0x80)) {
823 printk(KERN_INFO "SIS5513: SiS 961B MuTIOL IDE UDMA133 controller\n");
824 chipset_family = ATA_133a;
825 } else {
826 printk(KERN_INFO "SIS5513: SiS 961 MuTIOL IDE UDMA100 controller\n");
827 chipset_family = ATA_100;
828 }
829 }
830 }
831
832 if (!chipset_family)
833 return -1;
834
835 /* Make general config ops here
836 1/ tell IDE channels to operate in Compatibility mode only
837 2/ tell old chips to allow per drive IDE timings */
838
839 {
840 u8 reg;
841 u16 regw;
842
843 switch(chipset_family) {
844 case ATA_133:
845 /* SiS962 operation mode */
846 pci_read_config_word(dev, 0x50, &regw);
847 if (regw & 0x08)
848 pci_write_config_word(dev, 0x50, regw&0xfff7);
849 pci_read_config_word(dev, 0x52, &regw);
850 if (regw & 0x08)
851 pci_write_config_word(dev, 0x52, regw&0xfff7);
852 break;
853 case ATA_133a:
854 case ATA_100:
855 /* Fixup latency */
856 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x80);
857 /* Set compatibility bit */
858 pci_read_config_byte(dev, 0x49, &reg);
859 if (!(reg & 0x01)) {
860 pci_write_config_byte(dev, 0x49, reg|0x01);
861 }
862 break;
863 case ATA_100a:
864 case ATA_66:
865 /* Fixup latency */
866 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x10);
867
868 /* On ATA_66 chips the bit was elsewhere */
869 pci_read_config_byte(dev, 0x52, &reg);
870 if (!(reg & 0x04)) {
871 pci_write_config_byte(dev, 0x52, reg|0x04);
872 }
873 break;
874 case ATA_33:
875 /* On ATA_33 we didn't have a single bit to set */
876 pci_read_config_byte(dev, 0x09, &reg);
877 if ((reg & 0x0f) != 0x00) {
878 pci_write_config_byte(dev, 0x09, reg&0xf0);
879 }
880 case ATA_16:
881 /* force per drive recovery and active timings
882 needed on ATA_33 and below chips */
883 pci_read_config_byte(dev, 0x52, &reg);
884 if (!(reg & 0x08)) {
885 pci_write_config_byte(dev, 0x52, reg|0x08);
886 }
887 break;
888 }
889
890 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
891 if (!sis_proc) {
892 sis_proc = 1;
893 bmide_dev = dev;
894 ide_pci_create_host_proc("sis", sis_get_info);
895 }
896 #endif
897 }
898
899 return 0;
900 }
901
902 static unsigned int __init ata66_sis5513 (ide_hwif_t *hwif)
903 {
904 u8 ata66 = 0;
905
906 if (chipset_family >= ATA_133) {
907 u16 regw = 0;
908 u16 reg_addr = hwif->channel ? 0x52: 0x50;
909 pci_read_config_word(hwif->pci_dev, reg_addr, &regw);
910 ata66 = (regw & 0x8000) ? 0 : 1;
911 } else if (chipset_family >= ATA_66) {
912 u8 reg48h = 0;
913 u8 mask = hwif->channel ? 0x20 : 0x10;
914 pci_read_config_byte(hwif->pci_dev, 0x48, &reg48h);
915 ata66 = (reg48h & mask) ? 0 : 1;
916 }
917 return ata66;
918 }
919
920 static void __init init_hwif_sis5513 (ide_hwif_t *hwif)
921 {
922 hwif->autodma = 0;
923
924 if (!hwif->irq)
925 hwif->irq = hwif->channel ? 15 : 14;
926
927 hwif->tuneproc = &sis5513_tune_drive;
928 hwif->speedproc = &sis5513_tune_chipset;
929
930 if (!(hwif->dma_base)) {
931 hwif->drives[0].autotune = 1;
932 hwif->drives[1].autotune = 1;
933 return;
934 }
935
936 hwif->atapi_dma = 1;
937 hwif->ultra_mask = 0x7f;
938 hwif->mwdma_mask = 0x07;
939 hwif->swdma_mask = 0x07;
940
941 if (!chipset_family)
942 return;
943
944 if (!(hwif->udma_four))
945 hwif->udma_four = ata66_sis5513(hwif);
946
947 if (chipset_family > ATA_16) {
948 hwif->ide_dma_check = &sis5513_config_xfer_rate;
949 if (!noautodma)
950 hwif->autodma = 1;
951 }
952 hwif->drives[0].autodma = hwif->autodma;
953 hwif->drives[1].autodma = hwif->autodma;
954 return;
955 }
956
957 static ide_pci_device_t sis5513_chipset __devinitdata = {
958 .name = "SIS5513",
959 .init_chipset = init_chipset_sis5513,
960 .init_hwif = init_hwif_sis5513,
961 .channels = 2,
962 .autodma = NOAUTODMA,
963 .enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
964 .bootable = ON_BOARD,
965 };
966
967 static int __devinit sis5513_init_one(struct pci_dev *dev, const struct pci_device_id *id)
968 {
969 ide_setup_pci_device(dev, &sis5513_chipset);
970 return 0;
971 }
972
973 static struct pci_device_id sis5513_pci_tbl[] = {
974 { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5513, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
975 { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5518, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
976 { 0, },
977 };
978 MODULE_DEVICE_TABLE(pci, sis5513_pci_tbl);
979
980 static struct pci_driver driver = {
981 .name = "SIS_IDE",
982 .id_table = sis5513_pci_tbl,
983 .probe = sis5513_init_one,
984 };
985
986 static int sis5513_ide_init(void)
987 {
988 return ide_pci_register_driver(&driver);
989 }
990
991 module_init(sis5513_ide_init);
992
993 MODULE_AUTHOR("Lionel Bouton, L C Chang, Andre Hedrick, Vojtech Pavlik");
994 MODULE_DESCRIPTION("PCI driver module for SIS IDE");
995 MODULE_LICENSE("GPL");
996
997 /*
998 * TODO:
999 * - CLEANUP
1000 * - Use drivers/ide/ide-timing.h !
1001 * - More checks in the config registers (force values instead of
1002 * relying on the BIOS setting them correctly).
1003 * - Further optimisations ?
1004 * . for example ATA66+ regs 0x48 & 0x4A
1005 */
MOXA 2.6.9 from sdlinux-moxaart.tgz