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ide: fix UDMA/MWDMA/SWDMA masks (v3)
[linux-2.6/mini2440.git] / drivers / ide / pci / sis5513.c
blob6fe4ecb6c06ce5accbfe934a9844c40ae7ca06a9
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 { "SiS968", PCI_DEVICE_ID_SI_968, ATA_133 },
90 { "SiS966", PCI_DEVICE_ID_SI_966, ATA_133 },
91 { "SiS965", PCI_DEVICE_ID_SI_965, ATA_133 },
92 { "SiS745", PCI_DEVICE_ID_SI_745, ATA_100 },
93 { "SiS735", PCI_DEVICE_ID_SI_735, ATA_100 },
94 { "SiS733", PCI_DEVICE_ID_SI_733, ATA_100 },
95 { "SiS635", PCI_DEVICE_ID_SI_635, ATA_100 },
96 { "SiS633", PCI_DEVICE_ID_SI_633, ATA_100 },
97
98 { "SiS730", PCI_DEVICE_ID_SI_730, ATA_100a },
99 { "SiS550", PCI_DEVICE_ID_SI_550, ATA_100a },
100
101 { "SiS640", PCI_DEVICE_ID_SI_640, ATA_66 },
102 { "SiS630", PCI_DEVICE_ID_SI_630, ATA_66 },
103 { "SiS620", PCI_DEVICE_ID_SI_620, ATA_66 },
104 { "SiS540", PCI_DEVICE_ID_SI_540, ATA_66 },
105 { "SiS530", PCI_DEVICE_ID_SI_530, ATA_66 },
106
107 { "SiS5600", PCI_DEVICE_ID_SI_5600, ATA_33 },
108 { "SiS5598", PCI_DEVICE_ID_SI_5598, ATA_33 },
109 { "SiS5597", PCI_DEVICE_ID_SI_5597, ATA_33 },
110 { "SiS5591/2", PCI_DEVICE_ID_SI_5591, ATA_33 },
111 { "SiS5582", PCI_DEVICE_ID_SI_5582, ATA_33 },
112 { "SiS5581", PCI_DEVICE_ID_SI_5581, ATA_33 },
113
114 { "SiS5596", PCI_DEVICE_ID_SI_5596, ATA_16 },
115 { "SiS5571", PCI_DEVICE_ID_SI_5571, ATA_16 },
116 { "SiS5517", PCI_DEVICE_ID_SI_5517, ATA_16 },
117 { "SiS551x", PCI_DEVICE_ID_SI_5511, ATA_16 },
118 };
119
120 /* Cycle time bits and values vary across chip dma capabilities
121 These three arrays hold the register layout and the values to set.
122 Indexed by chipset_family and (dma_mode - XFER_UDMA_0) */
123
124 /* {0, ATA_16, ATA_33, ATA_66, ATA_100a, ATA_100, ATA_133} */
125 static u8 cycle_time_offset[] = {0,0,5,4,4,0,0};
126 static u8 cycle_time_range[] = {0,0,2,3,3,4,4};
127 static u8 cycle_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
128 {0,0,0,0,0,0,0}, /* no udma */
129 {0,0,0,0,0,0,0}, /* no udma */
130 {3,2,1,0,0,0,0}, /* ATA_33 */
131 {7,5,3,2,1,0,0}, /* ATA_66 */
132 {7,5,3,2,1,0,0}, /* ATA_100a (730 specific), differences are on cycle_time range and offset */
133 {11,7,5,4,2,1,0}, /* ATA_100 */
134 {15,10,7,5,3,2,1}, /* ATA_133a (earliest 691 southbridges) */
135 {15,10,7,5,3,2,1}, /* ATA_133 */
136 };
137 /* CRC Valid Setup Time vary across IDE clock setting 33/66/100/133
138 See SiS962 data sheet for more detail */
139 static u8 cvs_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
140 {0,0,0,0,0,0,0}, /* no udma */
141 {0,0,0,0,0,0,0}, /* no udma */
142 {2,1,1,0,0,0,0},
143 {4,3,2,1,0,0,0},
144 {4,3,2,1,0,0,0},
145 {6,4,3,1,1,1,0},
146 {9,6,4,2,2,2,2},
147 {9,6,4,2,2,2,2},
148 };
149 /* Initialize time, Active time, Recovery time vary across
150 IDE clock settings. These 3 arrays hold the register value
151 for PIO0/1/2/3/4 and DMA0/1/2 mode in order */
152 static u8 ini_time_value[][8] = {
153 {0,0,0,0,0,0,0,0},
154 {0,0,0,0,0,0,0,0},
155 {2,1,0,0,0,1,0,0},
156 {4,3,1,1,1,3,1,1},
157 {4,3,1,1,1,3,1,1},
158 {6,4,2,2,2,4,2,2},
159 {9,6,3,3,3,6,3,3},
160 {9,6,3,3,3,6,3,3},
161 };
162 static u8 act_time_value[][8] = {
163 {0,0,0,0,0,0,0,0},
164 {0,0,0,0,0,0,0,0},
165 {9,9,9,2,2,7,2,2},
166 {19,19,19,5,4,14,5,4},
167 {19,19,19,5,4,14,5,4},
168 {28,28,28,7,6,21,7,6},
169 {38,38,38,10,9,28,10,9},
170 {38,38,38,10,9,28,10,9},
171 };
172 static u8 rco_time_value[][8] = {
173 {0,0,0,0,0,0,0,0},
174 {0,0,0,0,0,0,0,0},
175 {9,2,0,2,0,7,1,1},
176 {19,5,1,5,2,16,3,2},
177 {19,5,1,5,2,16,3,2},
178 {30,9,3,9,4,25,6,4},
179 {40,12,4,12,5,34,12,5},
180 {40,12,4,12,5,34,12,5},
181 };
182
183 /*
184 * Printing configuration
185 */
186 /* Used for chipset type printing at boot time */
187 static char* chipset_capability[] = {
188 "ATA", "ATA 16",
189 "ATA 33", "ATA 66",
190 "ATA 100 (1st gen)", "ATA 100 (2nd gen)",
191 "ATA 133 (1st gen)", "ATA 133 (2nd gen)"
192 };
193
194 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
195 #include <linux/stat.h>
196 #include <linux/proc_fs.h>
197
198 static u8 sis_proc = 0;
199
200 static struct pci_dev *bmide_dev;
201
202 static char* cable_type[] = {
203 "80 pins",
204 "40 pins"
205 };
206
207 static char* recovery_time[] ={
208 "12 PCICLK", "1 PCICLK",
209 "2 PCICLK", "3 PCICLK",
210 "4 PCICLK", "5 PCICLCK",
211 "6 PCICLK", "7 PCICLCK",
212 "8 PCICLK", "9 PCICLCK",
213 "10 PCICLK", "11 PCICLK",
214 "13 PCICLK", "14 PCICLK",
215 "15 PCICLK", "15 PCICLK"
216 };
217
218 static char* active_time[] = {
219 "8 PCICLK", "1 PCICLCK",
220 "2 PCICLK", "3 PCICLK",
221 "4 PCICLK", "5 PCICLK",
222 "6 PCICLK", "12 PCICLK"
223 };
224
225 static char* cycle_time[] = {
226 "Reserved", "2 CLK",
227 "3 CLK", "4 CLK",
228 "5 CLK", "6 CLK",
229 "7 CLK", "8 CLK",
230 "9 CLK", "10 CLK",
231 "11 CLK", "12 CLK",
232 "13 CLK", "14 CLK",
233 "15 CLK", "16 CLK"
234 };
235
236 /* Generic add master or slave info function */
237 static char* get_drives_info (char *buffer, u8 pos)
238 {
239 u8 reg00, reg01, reg10, reg11; /* timing registers */
240 u32 regdw0, regdw1;
241 char* p = buffer;
242
243 /* Postwrite/Prefetch */
244 if (chipset_family < ATA_133) {
245 pci_read_config_byte(bmide_dev, 0x4b, &reg00);
246 p += sprintf(p, "Drive %d: Postwrite %s \t \t Postwrite %s\n",
247 pos, (reg00 & (0x10 << pos)) ? "Enabled" : "Disabled",
248 (reg00 & (0x40 << pos)) ? "Enabled" : "Disabled");
249 p += sprintf(p, " Prefetch %s \t \t Prefetch %s\n",
250 (reg00 & (0x01 << pos)) ? "Enabled" : "Disabled",
251 (reg00 & (0x04 << pos)) ? "Enabled" : "Disabled");
252 pci_read_config_byte(bmide_dev, 0x40+2*pos, &reg00);
253 pci_read_config_byte(bmide_dev, 0x41+2*pos, &reg01);
254 pci_read_config_byte(bmide_dev, 0x44+2*pos, &reg10);
255 pci_read_config_byte(bmide_dev, 0x45+2*pos, &reg11);
256 } else {
257 u32 reg54h;
258 u8 drive_pci = 0x40;
259 pci_read_config_dword(bmide_dev, 0x54, &reg54h);
260 if (reg54h & 0x40000000) {
261 // Configuration space remapped to 0x70
262 drive_pci = 0x70;
263 }
264 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos, &regdw0);
265 pci_read_config_dword(bmide_dev, (unsigned long)drive_pci+4*pos+8, &regdw1);
266
267 p += sprintf(p, "Drive %d:\n", pos);
268 }
269
270
271 /* UDMA */
272 if (chipset_family >= ATA_133) {
273 p += sprintf(p, " UDMA %s \t \t \t UDMA %s\n",
274 (regdw0 & 0x04) ? "Enabled" : "Disabled",
275 (regdw1 & 0x04) ? "Enabled" : "Disabled");
276 p += sprintf(p, " UDMA Cycle Time %s \t UDMA Cycle Time %s\n",
277 cycle_time[(regdw0 & 0xF0) >> 4],
278 cycle_time[(regdw1 & 0xF0) >> 4]);
279 } else if (chipset_family >= ATA_33) {
280 p += sprintf(p, " UDMA %s \t \t \t UDMA %s\n",
281 (reg01 & 0x80) ? "Enabled" : "Disabled",
282 (reg11 & 0x80) ? "Enabled" : "Disabled");
283
284 p += sprintf(p, " UDMA Cycle Time ");
285 switch(chipset_family) {
286 case ATA_33: p += sprintf(p, cycle_time[(reg01 & 0x60) >> 5]); break;
287 case ATA_66:
288 case ATA_100a: p += sprintf(p, cycle_time[(reg01 & 0x70) >> 4]); break;
289 case ATA_100:
290 case ATA_133a: p += sprintf(p, cycle_time[reg01 & 0x0F]); break;
291 default: p += sprintf(p, "?"); break;
292 }
293 p += sprintf(p, " \t UDMA Cycle Time ");
294 switch(chipset_family) {
295 case ATA_33: p += sprintf(p, cycle_time[(reg11 & 0x60) >> 5]); break;
296 case ATA_66:
297 case ATA_100a: p += sprintf(p, cycle_time[(reg11 & 0x70) >> 4]); break;
298 case ATA_100:
299 case ATA_133a: p += sprintf(p, cycle_time[reg11 & 0x0F]); break;
300 default: p += sprintf(p, "?"); break;
301 }
302 p += sprintf(p, "\n");
303 }
304
305
306 if (chipset_family < ATA_133) { /* else case TODO */
307
308 /* Data Active */
309 p += sprintf(p, " Data Active Time ");
310 switch(chipset_family) {
311 case ATA_16: /* confirmed */
312 case ATA_33:
313 case ATA_66:
314 case ATA_100a: p += sprintf(p, active_time[reg01 & 0x07]); break;
315 case ATA_100:
316 case ATA_133a: p += sprintf(p, active_time[(reg00 & 0x70) >> 4]); break;
317 default: p += sprintf(p, "?"); break;
318 }
319 p += sprintf(p, " \t Data Active Time ");
320 switch(chipset_family) {
321 case ATA_16:
322 case ATA_33:
323 case ATA_66:
324 case ATA_100a: p += sprintf(p, active_time[reg11 & 0x07]); break;
325 case ATA_100:
326 case ATA_133a: p += sprintf(p, active_time[(reg10 & 0x70) >> 4]); break;
327 default: p += sprintf(p, "?"); break;
328 }
329 p += sprintf(p, "\n");
330
331 /* Data Recovery */
332 /* warning: may need (reg&0x07) for pre ATA66 chips */
333 p += sprintf(p, " Data Recovery Time %s \t Data Recovery Time %s\n",
334 recovery_time[reg00 & 0x0f], recovery_time[reg10 & 0x0f]);
335 }
336
337 return p;
338 }
339
340 static char* get_masters_info(char* buffer)
341 {
342 return get_drives_info(buffer, 0);
343 }
344
345 static char* get_slaves_info(char* buffer)
346 {
347 return get_drives_info(buffer, 1);
348 }
349
350 /* Main get_info, called on /proc/ide/sis reads */
351 static int sis_get_info (char *buffer, char **addr, off_t offset, int count)
352 {
353 char *p = buffer;
354 int len;
355 u8 reg;
356 u16 reg2, reg3;
357
358 p += sprintf(p, "\nSiS 5513 ");
359 switch(chipset_family) {
360 case ATA_16: p += sprintf(p, "DMA 16"); break;
361 case ATA_33: p += sprintf(p, "Ultra 33"); break;
362 case ATA_66: p += sprintf(p, "Ultra 66"); break;
363 case ATA_100a:
364 case ATA_100: p += sprintf(p, "Ultra 100"); break;
365 case ATA_133a:
366 case ATA_133: p += sprintf(p, "Ultra 133"); break;
367 default: p+= sprintf(p, "Unknown???"); break;
368 }
369 p += sprintf(p, " chipset\n");
370 p += sprintf(p, "--------------- Primary Channel "
371 "---------------- Secondary Channel "
372 "-------------\n");
373
374 /* Status */
375 pci_read_config_byte(bmide_dev, 0x4a, &reg);
376 if (chipset_family == ATA_133) {
377 pci_read_config_word(bmide_dev, 0x50, &reg2);
378 pci_read_config_word(bmide_dev, 0x52, &reg3);
379 }
380 p += sprintf(p, "Channel Status: ");
381 if (chipset_family < ATA_66) {
382 p += sprintf(p, "%s \t \t \t \t %s\n",
383 (reg & 0x04) ? "On" : "Off",
384 (reg & 0x02) ? "On" : "Off");
385 } else if (chipset_family < ATA_133) {
386 p += sprintf(p, "%s \t \t \t \t %s \n",
387 (reg & 0x02) ? "On" : "Off",
388 (reg & 0x04) ? "On" : "Off");
389 } else { /* ATA_133 */
390 p += sprintf(p, "%s \t \t \t \t %s \n",
391 (reg2 & 0x02) ? "On" : "Off",
392 (reg3 & 0x02) ? "On" : "Off");
393 }
394
395 /* Operation Mode */
396 pci_read_config_byte(bmide_dev, 0x09, &reg);
397 p += sprintf(p, "Operation Mode: %s \t \t \t %s \n",
398 (reg & 0x01) ? "Native" : "Compatible",
399 (reg & 0x04) ? "Native" : "Compatible");
400
401 /* 80-pin cable ? */
402 if (chipset_family >= ATA_133) {
403 p += sprintf(p, "Cable Type: %s \t \t \t %s\n",
404 (reg2 & 0x01) ? cable_type[1] : cable_type[0],
405 (reg3 & 0x01) ? cable_type[1] : cable_type[0]);
406 } else if (chipset_family > ATA_33) {
407 pci_read_config_byte(bmide_dev, 0x48, &reg);
408 p += sprintf(p, "Cable Type: %s \t \t \t %s\n",
409 (reg & 0x10) ? cable_type[1] : cable_type[0],
410 (reg & 0x20) ? cable_type[1] : cable_type[0]);
411 }
412
413 /* Prefetch Count */
414 if (chipset_family < ATA_133) {
415 pci_read_config_word(bmide_dev, 0x4c, &reg2);
416 pci_read_config_word(bmide_dev, 0x4e, &reg3);
417 p += sprintf(p, "Prefetch Count: %d \t \t \t \t %d\n",
418 reg2, reg3);
419 }
420
421 p = get_masters_info(p);
422 p = get_slaves_info(p);
423
424 len = (p - buffer) - offset;
425 *addr = buffer + offset;
426
427 return len > count ? count : len;
428 }
429 #endif /* defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS) */
430
431 static u8 sis5513_ratemask (ide_drive_t *drive)
432 {
433 u8 rates[] = { 0, 0, 1, 2, 3, 3, 4, 4 };
434 u8 mode = rates[chipset_family];
435
436 if (!eighty_ninty_three(drive))
437 mode = min(mode, (u8)1);
438 return mode;
439 }
440
441 /*
442 * Configuration functions
443 */
444 /* Enables per-drive prefetch and postwrite */
445 static void config_drive_art_rwp (ide_drive_t *drive)
446 {
447 ide_hwif_t *hwif = HWIF(drive);
448 struct pci_dev *dev = hwif->pci_dev;
449
450 u8 reg4bh = 0;
451 u8 rw_prefetch = (0x11 << drive->dn);
452
453 if (drive->media != ide_disk)
454 return;
455 pci_read_config_byte(dev, 0x4b, &reg4bh);
456
457 if ((reg4bh & rw_prefetch) != rw_prefetch)
458 pci_write_config_byte(dev, 0x4b, reg4bh|rw_prefetch);
459 }
460
461
462 /* Set per-drive active and recovery time */
463 static void config_art_rwp_pio (ide_drive_t *drive, u8 pio)
464 {
465 ide_hwif_t *hwif = HWIF(drive);
466 struct pci_dev *dev = hwif->pci_dev;
467
468 u8 timing, drive_pci, test1, test2;
469
470 u16 eide_pio_timing[6] = {600, 390, 240, 180, 120, 90};
471 u16 xfer_pio = drive->id->eide_pio_modes;
472
473 config_drive_art_rwp(drive);
474 pio = ide_get_best_pio_mode(drive, 255, pio, NULL);
475
476 if (xfer_pio> 4)
477 xfer_pio = 0;
478
479 if (drive->id->eide_pio_iordy > 0) {
480 for (xfer_pio = 5;
481 (xfer_pio > 0) &&
482 (drive->id->eide_pio_iordy > eide_pio_timing[xfer_pio]);
483 xfer_pio--);
484 } else {
485 xfer_pio = (drive->id->eide_pio_modes & 4) ? 0x05 :
486 (drive->id->eide_pio_modes & 2) ? 0x04 :
487 (drive->id->eide_pio_modes & 1) ? 0x03 : xfer_pio;
488 }
489
490 timing = (xfer_pio >= pio) ? xfer_pio : pio;
491
492 /* In pre ATA_133 case, drives sit at 0x40 + 4*drive->dn */
493 drive_pci = 0x40;
494 /* In SiS962 case drives sit at (0x40 or 0x70) + 8*drive->dn) */
495 if (chipset_family >= ATA_133) {
496 u32 reg54h;
497 pci_read_config_dword(dev, 0x54, &reg54h);
498 if (reg54h & 0x40000000) drive_pci = 0x70;
499 drive_pci += ((drive->dn)*0x4);
500 } else {
501 drive_pci += ((drive->dn)*0x2);
502 }
503
504 /* register layout changed with newer ATA100 chips */
505 if (chipset_family < ATA_100) {
506 pci_read_config_byte(dev, drive_pci, &test1);
507 pci_read_config_byte(dev, drive_pci+1, &test2);
508
509 /* Clear active and recovery timings */
510 test1 &= ~0x0F;
511 test2 &= ~0x07;
512
513 switch(timing) {
514 case 4: test1 |= 0x01; test2 |= 0x03; break;
515 case 3: test1 |= 0x03; test2 |= 0x03; break;
516 case 2: test1 |= 0x04; test2 |= 0x04; break;
517 case 1: test1 |= 0x07; test2 |= 0x06; break;
518 default: break;
519 }
520 pci_write_config_byte(dev, drive_pci, test1);
521 pci_write_config_byte(dev, drive_pci+1, test2);
522 } else if (chipset_family < ATA_133) {
523 switch(timing) { /* active recovery
524 v v */
525 case 4: test1 = 0x30|0x01; break;
526 case 3: test1 = 0x30|0x03; break;
527 case 2: test1 = 0x40|0x04; break;
528 case 1: test1 = 0x60|0x07; break;
529 case 0: test1 = 0x00; break;
530 default: break;
531 }
532 pci_write_config_byte(dev, drive_pci, test1);
533 } else { /* ATA_133 */
534 u32 test3;
535 pci_read_config_dword(dev, drive_pci, &test3);
536 test3 &= 0xc0c00fff;
537 if (test3 & 0x08) {
538 test3 |= (unsigned long)ini_time_value[ATA_133][timing] << 12;
539 test3 |= (unsigned long)act_time_value[ATA_133][timing] << 16;
540 test3 |= (unsigned long)rco_time_value[ATA_133][timing] << 24;
541 } else {
542 test3 |= (unsigned long)ini_time_value[ATA_100][timing] << 12;
543 test3 |= (unsigned long)act_time_value[ATA_100][timing] << 16;
544 test3 |= (unsigned long)rco_time_value[ATA_100][timing] << 24;
545 }
546 pci_write_config_dword(dev, drive_pci, test3);
547 }
548 }
549
550 static int config_chipset_for_pio (ide_drive_t *drive, u8 pio)
551 {
552 if (pio == 255)
553 pio = ide_find_best_mode(drive, XFER_PIO | XFER_EPIO) - XFER_PIO_0;
554 config_art_rwp_pio(drive, pio);
555 return ide_config_drive_speed(drive, XFER_PIO_0 + min_t(u8, pio, 4));
556 }
557
558 static int sis5513_tune_chipset (ide_drive_t *drive, u8 xferspeed)
559 {
560 ide_hwif_t *hwif = HWIF(drive);
561 struct pci_dev *dev = hwif->pci_dev;
562
563 u8 drive_pci, reg, speed;
564 u32 regdw;
565
566 speed = ide_rate_filter(sis5513_ratemask(drive), xferspeed);
567
568 /* See config_art_rwp_pio for drive pci config registers */
569 drive_pci = 0x40;
570 if (chipset_family >= ATA_133) {
571 u32 reg54h;
572 pci_read_config_dword(dev, 0x54, &reg54h);
573 if (reg54h & 0x40000000) drive_pci = 0x70;
574 drive_pci += ((drive->dn)*0x4);
575 pci_read_config_dword(dev, (unsigned long)drive_pci, &regdw);
576 /* Disable UDMA bit for non UDMA modes on UDMA chips */
577 if (speed < XFER_UDMA_0) {
578 regdw &= 0xfffffffb;
579 pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
580 }
581
582 } else {
583 drive_pci += ((drive->dn)*0x2);
584 pci_read_config_byte(dev, drive_pci+1, &reg);
585 /* Disable UDMA bit for non UDMA modes on UDMA chips */
586 if ((speed < XFER_UDMA_0) && (chipset_family > ATA_16)) {
587 reg &= 0x7F;
588 pci_write_config_byte(dev, drive_pci+1, reg);
589 }
590 }
591
592 /* Config chip for mode */
593 switch(speed) {
594 case XFER_UDMA_6:
595 case XFER_UDMA_5:
596 case XFER_UDMA_4:
597 case XFER_UDMA_3:
598 case XFER_UDMA_2:
599 case XFER_UDMA_1:
600 case XFER_UDMA_0:
601 if (chipset_family >= ATA_133) {
602 regdw |= 0x04;
603 regdw &= 0xfffff00f;
604 /* check if ATA133 enable */
605 if (regdw & 0x08) {
606 regdw |= (unsigned long)cycle_time_value[ATA_133][speed-XFER_UDMA_0] << 4;
607 regdw |= (unsigned long)cvs_time_value[ATA_133][speed-XFER_UDMA_0] << 8;
608 } else {
609 /* if ATA133 disable, we should not set speed above UDMA5 */
610 if (speed > XFER_UDMA_5)
611 speed = XFER_UDMA_5;
612 regdw |= (unsigned long)cycle_time_value[ATA_100][speed-XFER_UDMA_0] << 4;
613 regdw |= (unsigned long)cvs_time_value[ATA_100][speed-XFER_UDMA_0] << 8;
614 }
615 pci_write_config_dword(dev, (unsigned long)drive_pci, regdw);
616 } else {
617 /* Force the UDMA bit on if we want to use UDMA */
618 reg |= 0x80;
619 /* clean reg cycle time bits */
620 reg &= ~((0xFF >> (8 - cycle_time_range[chipset_family]))
621 << cycle_time_offset[chipset_family]);
622 /* set reg cycle time bits */
623 reg |= cycle_time_value[chipset_family][speed-XFER_UDMA_0]
624 << cycle_time_offset[chipset_family];
625 pci_write_config_byte(dev, drive_pci+1, reg);
626 }
627 break;
628 case XFER_MW_DMA_2:
629 case XFER_MW_DMA_1:
630 case XFER_MW_DMA_0:
631 case XFER_SW_DMA_2:
632 case XFER_SW_DMA_1:
633 case XFER_SW_DMA_0:
634 break;
635 case XFER_PIO_4: return((int) config_chipset_for_pio(drive, 4));
636 case XFER_PIO_3: return((int) config_chipset_for_pio(drive, 3));
637 case XFER_PIO_2: return((int) config_chipset_for_pio(drive, 2));
638 case XFER_PIO_1: return((int) config_chipset_for_pio(drive, 1));
639 case XFER_PIO_0:
640 default: return((int) config_chipset_for_pio(drive, 0));
641 }
642
643 return ((int) ide_config_drive_speed(drive, speed));
644 }
645
646 static void sis5513_tune_drive (ide_drive_t *drive, u8 pio)
647 {
648 (void) config_chipset_for_pio(drive, pio);
649 }
650
651 /*
652 * ((id->hw_config & 0x4000|0x2000) && (HWIF(drive)->udma_four))
653 */
654 static int config_chipset_for_dma (ide_drive_t *drive)
655 {
656 u8 speed = ide_dma_speed(drive, sis5513_ratemask(drive));
657
658 #ifdef DEBUG
659 printk("SIS5513: config_chipset_for_dma, drive %d, ultra %x\n",
660 drive->dn, drive->id->dma_ultra);
661 #endif
662
663 if (!(speed))
664 return 0;
665
666 sis5513_tune_chipset(drive, speed);
667 return ide_dma_enable(drive);
668 }
669
670 static int sis5513_config_xfer_rate(ide_drive_t *drive)
671 {
672 config_art_rwp_pio(drive, 5);
673
674 drive->init_speed = 0;
675
676 if (ide_use_dma(drive) && config_chipset_for_dma(drive))
677 return 0;
678
679 if (ide_use_fast_pio(drive))
680 sis5513_tune_drive(drive, 5);
681
682 return -1;
683 }
684
685 /* Chip detection and general config */
686 static unsigned int __devinit init_chipset_sis5513 (struct pci_dev *dev, const char *name)
687 {
688 struct pci_dev *host;
689 int i = 0;
690
691 chipset_family = 0;
692
693 for (i = 0; i < ARRAY_SIZE(SiSHostChipInfo) && !chipset_family; i++) {
694
695 host = pci_get_device(PCI_VENDOR_ID_SI, SiSHostChipInfo[i].host_id, NULL);
696
697 if (!host)
698 continue;
699
700 chipset_family = SiSHostChipInfo[i].chipset_family;
701
702 /* Special case for SiS630 : 630S/ET is ATA_100a */
703 if (SiSHostChipInfo[i].host_id == PCI_DEVICE_ID_SI_630) {
704 u8 hostrev;
705 pci_read_config_byte(host, PCI_REVISION_ID, &hostrev);
706 if (hostrev >= 0x30)
707 chipset_family = ATA_100a;
708 }
709 pci_dev_put(host);
710
711 printk(KERN_INFO "SIS5513: %s %s controller\n",
712 SiSHostChipInfo[i].name, chipset_capability[chipset_family]);
713 }
714
715 if (!chipset_family) { /* Belongs to pci-quirks */
716
717 u32 idemisc;
718 u16 trueid;
719
720 /* Disable ID masking and register remapping */
721 pci_read_config_dword(dev, 0x54, &idemisc);
722 pci_write_config_dword(dev, 0x54, (idemisc & 0x7fffffff));
723 pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
724 pci_write_config_dword(dev, 0x54, idemisc);
725
726 if (trueid == 0x5518) {
727 printk(KERN_INFO "SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller\n");
728 chipset_family = ATA_133;
729
730 /* Check for 5513 compability mapping
731 * We must use this, else the port enabled code will fail,
732 * as it expects the enablebits at 0x4a.
733 */
734 if ((idemisc & 0x40000000) == 0) {
735 pci_write_config_dword(dev, 0x54, idemisc | 0x40000000);
736 printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
737 }
738 }
739 }
740
741 if (!chipset_family) { /* Belongs to pci-quirks */
742
743 struct pci_dev *lpc_bridge;
744 u16 trueid;
745 u8 prefctl;
746 u8 idecfg;
747 u8 sbrev;
748
749 pci_read_config_byte(dev, 0x4a, &idecfg);
750 pci_write_config_byte(dev, 0x4a, idecfg | 0x10);
751 pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
752 pci_write_config_byte(dev, 0x4a, idecfg);
753
754 if (trueid == 0x5517) { /* SiS 961/961B */
755
756 lpc_bridge = pci_get_slot(dev->bus, 0x10); /* Bus 0, Dev 2, Fn 0 */
757 pci_read_config_byte(lpc_bridge, PCI_REVISION_ID, &sbrev);
758 pci_read_config_byte(dev, 0x49, &prefctl);
759 pci_dev_put(lpc_bridge);
760
761 if (sbrev == 0x10 && (prefctl & 0x80)) {
762 printk(KERN_INFO "SIS5513: SiS 961B MuTIOL IDE UDMA133 controller\n");
763 chipset_family = ATA_133a;
764 } else {
765 printk(KERN_INFO "SIS5513: SiS 961 MuTIOL IDE UDMA100 controller\n");
766 chipset_family = ATA_100;
767 }
768 }
769 }
770
771 if (!chipset_family)
772 return -1;
773
774 /* Make general config ops here
775 1/ tell IDE channels to operate in Compatibility mode only
776 2/ tell old chips to allow per drive IDE timings */
777
778 {
779 u8 reg;
780 u16 regw;
781
782 switch(chipset_family) {
783 case ATA_133:
784 /* SiS962 operation mode */
785 pci_read_config_word(dev, 0x50, &regw);
786 if (regw & 0x08)
787 pci_write_config_word(dev, 0x50, regw&0xfff7);
788 pci_read_config_word(dev, 0x52, &regw);
789 if (regw & 0x08)
790 pci_write_config_word(dev, 0x52, regw&0xfff7);
791 break;
792 case ATA_133a:
793 case ATA_100:
794 /* Fixup latency */
795 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x80);
796 /* Set compatibility bit */
797 pci_read_config_byte(dev, 0x49, &reg);
798 if (!(reg & 0x01)) {
799 pci_write_config_byte(dev, 0x49, reg|0x01);
800 }
801 break;
802 case ATA_100a:
803 case ATA_66:
804 /* Fixup latency */
805 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x10);
806
807 /* On ATA_66 chips the bit was elsewhere */
808 pci_read_config_byte(dev, 0x52, &reg);
809 if (!(reg & 0x04)) {
810 pci_write_config_byte(dev, 0x52, reg|0x04);
811 }
812 break;
813 case ATA_33:
814 /* On ATA_33 we didn't have a single bit to set */
815 pci_read_config_byte(dev, 0x09, &reg);
816 if ((reg & 0x0f) != 0x00) {
817 pci_write_config_byte(dev, 0x09, reg&0xf0);
818 }
819 case ATA_16:
820 /* force per drive recovery and active timings
821 needed on ATA_33 and below chips */
822 pci_read_config_byte(dev, 0x52, &reg);
823 if (!(reg & 0x08)) {
824 pci_write_config_byte(dev, 0x52, reg|0x08);
825 }
826 break;
827 }
828
829 #if defined(DISPLAY_SIS_TIMINGS) && defined(CONFIG_PROC_FS)
830 if (!sis_proc) {
831 sis_proc = 1;
832 bmide_dev = dev;
833 ide_pci_create_host_proc("sis", sis_get_info);
834 }
835 #endif
836 }
837
838 return 0;
839 }
840
841 static unsigned int __devinit ata66_sis5513 (ide_hwif_t *hwif)
842 {
843 u8 ata66 = 0;
844
845 if (chipset_family >= ATA_133) {
846 u16 regw = 0;
847 u16 reg_addr = hwif->channel ? 0x52: 0x50;
848 pci_read_config_word(hwif->pci_dev, reg_addr, &regw);
849 ata66 = (regw & 0x8000) ? 0 : 1;
850 } else if (chipset_family >= ATA_66) {
851 u8 reg48h = 0;
852 u8 mask = hwif->channel ? 0x20 : 0x10;
853 pci_read_config_byte(hwif->pci_dev, 0x48, &reg48h);
854 ata66 = (reg48h & mask) ? 0 : 1;
855 }
856 return ata66;
857 }
858
859 static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
860 {
861 u8 udma_rates[] = { 0x00, 0x00, 0x07, 0x1f, 0x3f, 0x3f, 0x7f, 0x7f };
862
863 hwif->autodma = 0;
864
865 if (!hwif->irq)
866 hwif->irq = hwif->channel ? 15 : 14;
867
868 hwif->tuneproc = &sis5513_tune_drive;
869 hwif->speedproc = &sis5513_tune_chipset;
870
871 if (!(hwif->dma_base)) {
872 hwif->drives[0].autotune = 1;
873 hwif->drives[1].autotune = 1;
874 return;
875 }
876
877 hwif->atapi_dma = 1;
878
879 hwif->ultra_mask = udma_rates[chipset_family];
880 hwif->mwdma_mask = 0x07;
881 hwif->swdma_mask = 0x07;
882
883 if (!chipset_family)
884 return;
885
886 if (!(hwif->udma_four))
887 hwif->udma_four = ata66_sis5513(hwif);
888
889 if (chipset_family > ATA_16) {
890 hwif->ide_dma_check = &sis5513_config_xfer_rate;
891 if (!noautodma)
892 hwif->autodma = 1;
893 }
894 hwif->drives[0].autodma = hwif->autodma;
895 hwif->drives[1].autodma = hwif->autodma;
896 return;
897 }
898
899 static ide_pci_device_t sis5513_chipset __devinitdata = {
900 .name = "SIS5513",
901 .init_chipset = init_chipset_sis5513,
902 .init_hwif = init_hwif_sis5513,
903 .channels = 2,
904 .autodma = NOAUTODMA,
905 .enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
906 .bootable = ON_BOARD,
907 };
908
909 static int __devinit sis5513_init_one(struct pci_dev *dev, const struct pci_device_id *id)
910 {
911 return ide_setup_pci_device(dev, &sis5513_chipset);
912 }
913
914 static struct pci_device_id sis5513_pci_tbl[] = {
915 { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5513, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
916 { PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5518, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
917 { 0, },
918 };
919 MODULE_DEVICE_TABLE(pci, sis5513_pci_tbl);
920
921 static struct pci_driver driver = {
922 .name = "SIS_IDE",
923 .id_table = sis5513_pci_tbl,
924 .probe = sis5513_init_one,
925 };
926
927 static int __init sis5513_ide_init(void)
928 {
929 return ide_pci_register_driver(&driver);
930 }
931
932 module_init(sis5513_ide_init);
933
934 MODULE_AUTHOR("Lionel Bouton, L C Chang, Andre Hedrick, Vojtech Pavlik");
935 MODULE_DESCRIPTION("PCI driver module for SIS IDE");
936 MODULE_LICENSE("GPL");
937
938 /*
939 * TODO:
940 * - CLEANUP
941 * - Use drivers/ide/ide-timing.h !
942 * - More checks in the config registers (force values instead of
943 * relying on the BIOS setting them correctly).
944 * - Further optimisations ?
945 * . for example ATA66+ regs 0x48 & 0x4A
946 */
Support for the Chinese Samsung S3C2440 based development boards