Commit | Line | Data |
---|---|---|
09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
669a5db4 JG |
2 | /* |
3 | * Libata driver for the highpoint 37x and 30x UDMA66 ATA controllers. | |
4 | * | |
5 | * This driver is heavily based upon: | |
6 | * | |
7 | * linux/drivers/ide/pci/hpt366.c Version 0.36 April 25, 2003 | |
8 | * | |
9 | * Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org> | |
10 | * Portions Copyright (C) 2001 Sun Microsystems, Inc. | |
11 | * Portions Copyright (C) 2003 Red Hat Inc | |
8e834c2e | 12 | * Portions Copyright (C) 2005-2010 MontaVista Software, Inc. |
669a5db4 JG |
13 | * |
14 | * TODO | |
d44a65f7 | 15 | * Look into engine reset on timeout errors. Should not be required. |
669a5db4 | 16 | */ |
669a5db4 JG |
17 | #include <linux/kernel.h> |
18 | #include <linux/module.h> | |
19 | #include <linux/pci.h> | |
669a5db4 JG |
20 | #include <linux/blkdev.h> |
21 | #include <linux/delay.h> | |
22 | #include <scsi/scsi_host.h> | |
23 | #include <linux/libata.h> | |
24 | ||
25 | #define DRV_NAME "pata_hpt37x" | |
8d7b1c70 | 26 | #define DRV_VERSION "0.6.23" |
669a5db4 JG |
27 | |
28 | struct hpt_clock { | |
29 | u8 xfer_speed; | |
30 | u32 timing; | |
31 | }; | |
32 | ||
33 | struct hpt_chip { | |
34 | const char *name; | |
35 | unsigned int base; | |
36 | struct hpt_clock const *clocks[4]; | |
37 | }; | |
38 | ||
39 | /* key for bus clock timings | |
40 | * bit | |
fd5e62e2 SS |
41 | * 0:3 data_high_time. Inactive time of DIOW_/DIOR_ for PIO and MW DMA. |
42 | * cycles = value + 1 | |
43 | * 4:8 data_low_time. Active time of DIOW_/DIOR_ for PIO and MW DMA. | |
44 | * cycles = value + 1 | |
45 | * 9:12 cmd_high_time. Inactive time of DIOW_/DIOR_ during task file | |
669a5db4 | 46 | * register access. |
fd5e62e2 | 47 | * 13:17 cmd_low_time. Active time of DIOW_/DIOR_ during task file |
669a5db4 | 48 | * register access. |
fd5e62e2 SS |
49 | * 18:20 udma_cycle_time. Clock cycles for UDMA xfer. |
50 | * 21 CLK frequency for UDMA: 0=ATA clock, 1=dual ATA clock. | |
51 | * 22:24 pre_high_time. Time to initialize 1st cycle for PIO and MW DMA xfer. | |
52 | * 25:27 cmd_pre_high_time. Time to initialize 1st PIO cycle for task file | |
669a5db4 | 53 | * register access. |
fd5e62e2 SS |
54 | * 28 UDMA enable. |
55 | * 29 DMA enable. | |
56 | * 30 PIO_MST enable. If set, the chip is in bus master mode during | |
57 | * PIO xfer. | |
58 | * 31 FIFO enable. Only for PIO. | |
669a5db4 JG |
59 | */ |
60 | ||
fcc2f69a AC |
61 | static struct hpt_clock hpt37x_timings_33[] = { |
62 | { XFER_UDMA_6, 0x12446231 }, /* 0x12646231 ?? */ | |
63 | { XFER_UDMA_5, 0x12446231 }, | |
64 | { XFER_UDMA_4, 0x12446231 }, | |
65 | { XFER_UDMA_3, 0x126c6231 }, | |
66 | { XFER_UDMA_2, 0x12486231 }, | |
67 | { XFER_UDMA_1, 0x124c6233 }, | |
68 | { XFER_UDMA_0, 0x12506297 }, | |
69 | ||
70 | { XFER_MW_DMA_2, 0x22406c31 }, | |
71 | { XFER_MW_DMA_1, 0x22406c33 }, | |
72 | { XFER_MW_DMA_0, 0x22406c97 }, | |
73 | ||
74 | { XFER_PIO_4, 0x06414e31 }, | |
75 | { XFER_PIO_3, 0x06414e42 }, | |
76 | { XFER_PIO_2, 0x06414e53 }, | |
77 | { XFER_PIO_1, 0x06814e93 }, | |
78 | { XFER_PIO_0, 0x06814ea7 } | |
669a5db4 JG |
79 | }; |
80 | ||
fcc2f69a AC |
81 | static struct hpt_clock hpt37x_timings_50[] = { |
82 | { XFER_UDMA_6, 0x12848242 }, | |
83 | { XFER_UDMA_5, 0x12848242 }, | |
84 | { XFER_UDMA_4, 0x12ac8242 }, | |
85 | { XFER_UDMA_3, 0x128c8242 }, | |
86 | { XFER_UDMA_2, 0x120c8242 }, | |
87 | { XFER_UDMA_1, 0x12148254 }, | |
88 | { XFER_UDMA_0, 0x121882ea }, | |
89 | ||
90 | { XFER_MW_DMA_2, 0x22808242 }, | |
91 | { XFER_MW_DMA_1, 0x22808254 }, | |
92 | { XFER_MW_DMA_0, 0x228082ea }, | |
93 | ||
94 | { XFER_PIO_4, 0x0a81f442 }, | |
95 | { XFER_PIO_3, 0x0a81f443 }, | |
96 | { XFER_PIO_2, 0x0a81f454 }, | |
97 | { XFER_PIO_1, 0x0ac1f465 }, | |
98 | { XFER_PIO_0, 0x0ac1f48a } | |
669a5db4 JG |
99 | }; |
100 | ||
fcc2f69a AC |
101 | static struct hpt_clock hpt37x_timings_66[] = { |
102 | { XFER_UDMA_6, 0x1c869c62 }, | |
103 | { XFER_UDMA_5, 0x1cae9c62 }, /* 0x1c8a9c62 */ | |
104 | { XFER_UDMA_4, 0x1c8a9c62 }, | |
105 | { XFER_UDMA_3, 0x1c8e9c62 }, | |
106 | { XFER_UDMA_2, 0x1c929c62 }, | |
107 | { XFER_UDMA_1, 0x1c9a9c62 }, | |
108 | { XFER_UDMA_0, 0x1c829c62 }, | |
109 | ||
110 | { XFER_MW_DMA_2, 0x2c829c62 }, | |
111 | { XFER_MW_DMA_1, 0x2c829c66 }, | |
112 | { XFER_MW_DMA_0, 0x2c829d2e }, | |
113 | ||
114 | { XFER_PIO_4, 0x0c829c62 }, | |
115 | { XFER_PIO_3, 0x0c829c84 }, | |
116 | { XFER_PIO_2, 0x0c829ca6 }, | |
117 | { XFER_PIO_1, 0x0d029d26 }, | |
118 | { XFER_PIO_0, 0x0d029d5e } | |
669a5db4 JG |
119 | }; |
120 | ||
669a5db4 JG |
121 | |
122 | static const struct hpt_chip hpt370 = { | |
123 | "HPT370", | |
124 | 48, | |
125 | { | |
fcc2f69a | 126 | hpt37x_timings_33, |
669a5db4 JG |
127 | NULL, |
128 | NULL, | |
a4734468 | 129 | NULL |
669a5db4 JG |
130 | } |
131 | }; | |
132 | ||
133 | static const struct hpt_chip hpt370a = { | |
134 | "HPT370A", | |
135 | 48, | |
136 | { | |
fcc2f69a | 137 | hpt37x_timings_33, |
669a5db4 | 138 | NULL, |
fcc2f69a | 139 | hpt37x_timings_50, |
a4734468 | 140 | NULL |
669a5db4 JG |
141 | } |
142 | }; | |
143 | ||
144 | static const struct hpt_chip hpt372 = { | |
145 | "HPT372", | |
146 | 55, | |
147 | { | |
fcc2f69a | 148 | hpt37x_timings_33, |
669a5db4 | 149 | NULL, |
fcc2f69a AC |
150 | hpt37x_timings_50, |
151 | hpt37x_timings_66 | |
669a5db4 JG |
152 | } |
153 | }; | |
154 | ||
155 | static const struct hpt_chip hpt302 = { | |
156 | "HPT302", | |
157 | 66, | |
158 | { | |
fcc2f69a | 159 | hpt37x_timings_33, |
669a5db4 | 160 | NULL, |
fcc2f69a AC |
161 | hpt37x_timings_50, |
162 | hpt37x_timings_66 | |
669a5db4 JG |
163 | } |
164 | }; | |
165 | ||
166 | static const struct hpt_chip hpt371 = { | |
167 | "HPT371", | |
168 | 66, | |
169 | { | |
fcc2f69a | 170 | hpt37x_timings_33, |
669a5db4 | 171 | NULL, |
fcc2f69a AC |
172 | hpt37x_timings_50, |
173 | hpt37x_timings_66 | |
669a5db4 JG |
174 | } |
175 | }; | |
176 | ||
177 | static const struct hpt_chip hpt372a = { | |
178 | "HPT372A", | |
179 | 66, | |
180 | { | |
fcc2f69a | 181 | hpt37x_timings_33, |
669a5db4 | 182 | NULL, |
fcc2f69a AC |
183 | hpt37x_timings_50, |
184 | hpt37x_timings_66 | |
669a5db4 JG |
185 | } |
186 | }; | |
187 | ||
188 | static const struct hpt_chip hpt374 = { | |
189 | "HPT374", | |
190 | 48, | |
191 | { | |
fcc2f69a | 192 | hpt37x_timings_33, |
669a5db4 JG |
193 | NULL, |
194 | NULL, | |
195 | NULL | |
196 | } | |
197 | }; | |
198 | ||
199 | /** | |
200 | * hpt37x_find_mode - reset the hpt37x bus | |
201 | * @ap: ATA port | |
202 | * @speed: transfer mode | |
203 | * | |
204 | * Return the 32bit register programming information for this channel | |
205 | * that matches the speed provided. | |
206 | */ | |
85cd7251 | 207 | |
669a5db4 JG |
208 | static u32 hpt37x_find_mode(struct ata_port *ap, int speed) |
209 | { | |
210 | struct hpt_clock *clocks = ap->host->private_data; | |
85cd7251 | 211 | |
49bfbd38 | 212 | while (clocks->xfer_speed) { |
669a5db4 JG |
213 | if (clocks->xfer_speed == speed) |
214 | return clocks->timing; | |
215 | clocks++; | |
216 | } | |
217 | BUG(); | |
218 | return 0xffffffffU; /* silence compiler warning */ | |
219 | } | |
220 | ||
49bfbd38 SS |
221 | static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, |
222 | const char * const list[]) | |
669a5db4 | 223 | { |
8bfa79fc | 224 | unsigned char model_num[ATA_ID_PROD_LEN + 1]; |
dc85ca57 | 225 | int i; |
669a5db4 | 226 | |
8bfa79fc | 227 | ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); |
669a5db4 | 228 | |
dc85ca57 AS |
229 | i = match_string(list, -1, model_num); |
230 | if (i >= 0) { | |
f06c13aa HR |
231 | ata_dev_warn(dev, "%s is not supported for %s\n", |
232 | modestr, list[i]); | |
dc85ca57 | 233 | return 1; |
669a5db4 JG |
234 | } |
235 | return 0; | |
236 | } | |
237 | ||
49bfbd38 SS |
238 | static const char * const bad_ata33[] = { |
239 | "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", | |
240 | "Maxtor 90845U3", "Maxtor 90650U2", | |
241 | "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", | |
242 | "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2", | |
243 | "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", | |
244 | "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4", | |
669a5db4 JG |
245 | "Maxtor 90510D4", |
246 | "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2", | |
49bfbd38 SS |
247 | "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", |
248 | "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4", | |
249 | "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", | |
250 | "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2", | |
669a5db4 JG |
251 | NULL |
252 | }; | |
253 | ||
49bfbd38 | 254 | static const char * const bad_ata100_5[] = { |
669a5db4 JG |
255 | "IBM-DTLA-307075", |
256 | "IBM-DTLA-307060", | |
257 | "IBM-DTLA-307045", | |
258 | "IBM-DTLA-307030", | |
259 | "IBM-DTLA-307020", | |
260 | "IBM-DTLA-307015", | |
261 | "IBM-DTLA-305040", | |
262 | "IBM-DTLA-305030", | |
263 | "IBM-DTLA-305020", | |
264 | "IC35L010AVER07-0", | |
265 | "IC35L020AVER07-0", | |
266 | "IC35L030AVER07-0", | |
267 | "IC35L040AVER07-0", | |
268 | "IC35L060AVER07-0", | |
269 | "WDC AC310200R", | |
270 | NULL | |
271 | }; | |
272 | ||
273 | /** | |
274 | * hpt370_filter - mode selection filter | |
669a5db4 | 275 | * @adev: ATA device |
a51746f4 | 276 | * @mask: mode mask |
669a5db4 JG |
277 | * |
278 | * Block UDMA on devices that cause trouble with this controller. | |
279 | */ | |
85cd7251 | 280 | |
a76b62ca | 281 | static unsigned long hpt370_filter(struct ata_device *adev, unsigned long mask) |
669a5db4 | 282 | { |
6929da44 | 283 | if (adev->class == ATA_DEV_ATA) { |
669a5db4 JG |
284 | if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33)) |
285 | mask &= ~ATA_MASK_UDMA; | |
286 | if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5)) | |
6ddd6861 | 287 | mask &= ~(0xE0 << ATA_SHIFT_UDMA); |
669a5db4 | 288 | } |
c7087652 | 289 | return mask; |
669a5db4 JG |
290 | } |
291 | ||
292 | /** | |
293 | * hpt370a_filter - mode selection filter | |
669a5db4 | 294 | * @adev: ATA device |
a51746f4 | 295 | * @mask: mode mask |
669a5db4 JG |
296 | * |
297 | * Block UDMA on devices that cause trouble with this controller. | |
298 | */ | |
85cd7251 | 299 | |
a76b62ca | 300 | static unsigned long hpt370a_filter(struct ata_device *adev, unsigned long mask) |
669a5db4 | 301 | { |
73946f9f | 302 | if (adev->class == ATA_DEV_ATA) { |
669a5db4 | 303 | if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5)) |
6ddd6861 | 304 | mask &= ~(0xE0 << ATA_SHIFT_UDMA); |
669a5db4 | 305 | } |
c7087652 | 306 | return mask; |
669a5db4 | 307 | } |
85cd7251 | 308 | |
8e834c2e SS |
309 | /** |
310 | * hpt372_filter - mode selection filter | |
311 | * @adev: ATA device | |
312 | * @mask: mode mask | |
313 | * | |
314 | * The Marvell bridge chips used on the HighPoint SATA cards do not seem | |
315 | * to support the UltraDMA modes 1, 2, and 3 as well as any MWDMA modes... | |
316 | */ | |
317 | static unsigned long hpt372_filter(struct ata_device *adev, unsigned long mask) | |
318 | { | |
319 | if (ata_id_is_sata(adev->id)) | |
320 | mask &= ~((0xE << ATA_SHIFT_UDMA) | ATA_MASK_MWDMA); | |
321 | ||
322 | return mask; | |
323 | } | |
324 | ||
9e87be9e BZ |
325 | /** |
326 | * hpt37x_cable_detect - Detect the cable type | |
327 | * @ap: ATA port to detect on | |
328 | * | |
329 | * Return the cable type attached to this port | |
330 | */ | |
331 | ||
332 | static int hpt37x_cable_detect(struct ata_port *ap) | |
333 | { | |
334 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
335 | u8 scr2, ata66; | |
336 | ||
337 | pci_read_config_byte(pdev, 0x5B, &scr2); | |
338 | pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01); | |
10a9c969 BZ |
339 | |
340 | udelay(10); /* debounce */ | |
341 | ||
9e87be9e BZ |
342 | /* Cable register now active */ |
343 | pci_read_config_byte(pdev, 0x5A, &ata66); | |
344 | /* Restore state */ | |
345 | pci_write_config_byte(pdev, 0x5B, scr2); | |
346 | ||
347 | if (ata66 & (2 >> ap->port_no)) | |
348 | return ATA_CBL_PATA40; | |
349 | else | |
350 | return ATA_CBL_PATA80; | |
351 | } | |
352 | ||
353 | /** | |
354 | * hpt374_fn1_cable_detect - Detect the cable type | |
355 | * @ap: ATA port to detect on | |
356 | * | |
357 | * Return the cable type attached to this port | |
358 | */ | |
359 | ||
360 | static int hpt374_fn1_cable_detect(struct ata_port *ap) | |
361 | { | |
362 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
363 | unsigned int mcrbase = 0x50 + 4 * ap->port_no; | |
364 | u16 mcr3; | |
365 | u8 ata66; | |
366 | ||
367 | /* Do the extra channel work */ | |
368 | pci_read_config_word(pdev, mcrbase + 2, &mcr3); | |
369 | /* Set bit 15 of 0x52 to enable TCBLID as input */ | |
370 | pci_write_config_word(pdev, mcrbase + 2, mcr3 | 0x8000); | |
371 | pci_read_config_byte(pdev, 0x5A, &ata66); | |
372 | /* Reset TCBLID/FCBLID to output */ | |
373 | pci_write_config_word(pdev, mcrbase + 2, mcr3); | |
374 | ||
375 | if (ata66 & (2 >> ap->port_no)) | |
376 | return ATA_CBL_PATA40; | |
377 | else | |
378 | return ATA_CBL_PATA80; | |
379 | } | |
380 | ||
669a5db4 JG |
381 | /** |
382 | * hpt37x_pre_reset - reset the hpt37x bus | |
cc0680a5 | 383 | * @link: ATA link to reset |
d4b2bab4 | 384 | * @deadline: deadline jiffies for the operation |
669a5db4 | 385 | * |
ab81a505 | 386 | * Perform the initial reset handling for the HPT37x. |
669a5db4 | 387 | */ |
85cd7251 | 388 | |
cc0680a5 | 389 | static int hpt37x_pre_reset(struct ata_link *link, unsigned long deadline) |
669a5db4 | 390 | { |
cc0680a5 | 391 | struct ata_port *ap = link->ap; |
669a5db4 | 392 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
b5bf24b9 AC |
393 | static const struct pci_bits hpt37x_enable_bits[] = { |
394 | { 0x50, 1, 0x04, 0x04 }, | |
395 | { 0x54, 1, 0x04, 0x04 } | |
396 | }; | |
49bfbd38 | 397 | |
b5bf24b9 AC |
398 | if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no])) |
399 | return -ENOENT; | |
f20b16ff | 400 | |
669a5db4 | 401 | /* Reset the state machine */ |
fcc2f69a | 402 | pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37); |
669a5db4 | 403 | udelay(100); |
85cd7251 | 404 | |
9363c382 | 405 | return ata_sff_prereset(link, deadline); |
669a5db4 JG |
406 | } |
407 | ||
1a1b172b SS |
408 | static void hpt370_set_mode(struct ata_port *ap, struct ata_device *adev, |
409 | u8 mode) | |
669a5db4 JG |
410 | { |
411 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
412 | u32 addr1, addr2; | |
1a1b172b | 413 | u32 reg, timing, mask; |
669a5db4 JG |
414 | u8 fast; |
415 | ||
416 | addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no); | |
417 | addr2 = 0x51 + 4 * ap->port_no; | |
85cd7251 | 418 | |
669a5db4 JG |
419 | /* Fast interrupt prediction disable, hold off interrupt disable */ |
420 | pci_read_config_byte(pdev, addr2, &fast); | |
421 | fast &= ~0x02; | |
422 | fast |= 0x01; | |
423 | pci_write_config_byte(pdev, addr2, fast); | |
85cd7251 | 424 | |
1a1b172b SS |
425 | /* Determine timing mask and find matching mode entry */ |
426 | if (mode < XFER_MW_DMA_0) | |
427 | mask = 0xcfc3ffff; | |
428 | else if (mode < XFER_UDMA_0) | |
429 | mask = 0x31c001ff; | |
430 | else | |
431 | mask = 0x303c0000; | |
432 | ||
433 | timing = hpt37x_find_mode(ap, mode); | |
434 | ||
669a5db4 | 435 | pci_read_config_dword(pdev, addr1, ®); |
1a1b172b SS |
436 | reg = (reg & ~mask) | (timing & mask); |
437 | pci_write_config_dword(pdev, addr1, reg); | |
438 | } | |
439 | /** | |
440 | * hpt370_set_piomode - PIO setup | |
441 | * @ap: ATA interface | |
442 | * @adev: device on the interface | |
443 | * | |
444 | * Perform PIO mode setup. | |
445 | */ | |
446 | ||
447 | static void hpt370_set_piomode(struct ata_port *ap, struct ata_device *adev) | |
448 | { | |
449 | hpt370_set_mode(ap, adev, adev->pio_mode); | |
669a5db4 JG |
450 | } |
451 | ||
452 | /** | |
453 | * hpt370_set_dmamode - DMA timing setup | |
454 | * @ap: ATA interface | |
455 | * @adev: Device being configured | |
456 | * | |
1a1b172b | 457 | * Set up the channel for MWDMA or UDMA modes. |
669a5db4 | 458 | */ |
85cd7251 | 459 | |
669a5db4 JG |
460 | static void hpt370_set_dmamode(struct ata_port *ap, struct ata_device *adev) |
461 | { | |
1a1b172b | 462 | hpt370_set_mode(ap, adev, adev->dma_mode); |
669a5db4 JG |
463 | } |
464 | ||
669a5db4 | 465 | /** |
a51746f4 | 466 | * hpt370_bmdma_stop - DMA engine stop |
669a5db4 JG |
467 | * @qc: ATA command |
468 | * | |
469 | * Work around the HPT370 DMA engine. | |
470 | */ | |
85cd7251 | 471 | |
669a5db4 JG |
472 | static void hpt370_bmdma_stop(struct ata_queued_cmd *qc) |
473 | { | |
474 | struct ata_port *ap = qc->ap; | |
475 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
0d5ff566 | 476 | void __iomem *bmdma = ap->ioaddr.bmdma_addr; |
56f46f8c SS |
477 | u8 dma_stat = ioread8(bmdma + ATA_DMA_STATUS); |
478 | u8 dma_cmd; | |
85cd7251 | 479 | |
56f46f8c | 480 | if (dma_stat & ATA_DMA_ACTIVE) { |
669a5db4 | 481 | udelay(20); |
56f46f8c | 482 | dma_stat = ioread8(bmdma + ATA_DMA_STATUS); |
669a5db4 | 483 | } |
56f46f8c | 484 | if (dma_stat & ATA_DMA_ACTIVE) { |
669a5db4 JG |
485 | /* Clear the engine */ |
486 | pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37); | |
487 | udelay(10); | |
488 | /* Stop DMA */ | |
56f46f8c SS |
489 | dma_cmd = ioread8(bmdma + ATA_DMA_CMD); |
490 | iowrite8(dma_cmd & ~ATA_DMA_START, bmdma + ATA_DMA_CMD); | |
669a5db4 | 491 | /* Clear Error */ |
56f46f8c SS |
492 | dma_stat = ioread8(bmdma + ATA_DMA_STATUS); |
493 | iowrite8(dma_stat | ATA_DMA_INTR | ATA_DMA_ERR, | |
494 | bmdma + ATA_DMA_STATUS); | |
669a5db4 JG |
495 | /* Clear the engine */ |
496 | pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37); | |
497 | udelay(10); | |
498 | } | |
499 | ata_bmdma_stop(qc); | |
500 | } | |
501 | ||
1a1b172b SS |
502 | static void hpt372_set_mode(struct ata_port *ap, struct ata_device *adev, |
503 | u8 mode) | |
669a5db4 JG |
504 | { |
505 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
506 | u32 addr1, addr2; | |
1a1b172b | 507 | u32 reg, timing, mask; |
669a5db4 JG |
508 | u8 fast; |
509 | ||
510 | addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no); | |
511 | addr2 = 0x51 + 4 * ap->port_no; | |
85cd7251 | 512 | |
669a5db4 JG |
513 | /* Fast interrupt prediction disable, hold off interrupt disable */ |
514 | pci_read_config_byte(pdev, addr2, &fast); | |
515 | fast &= ~0x07; | |
516 | pci_write_config_byte(pdev, addr2, fast); | |
85cd7251 | 517 | |
1a1b172b SS |
518 | /* Determine timing mask and find matching mode entry */ |
519 | if (mode < XFER_MW_DMA_0) | |
520 | mask = 0xcfc3ffff; | |
521 | else if (mode < XFER_UDMA_0) | |
522 | mask = 0x31c001ff; | |
523 | else | |
524 | mask = 0x303c0000; | |
525 | ||
526 | timing = hpt37x_find_mode(ap, mode); | |
527 | ||
669a5db4 | 528 | pci_read_config_dword(pdev, addr1, ®); |
1a1b172b SS |
529 | reg = (reg & ~mask) | (timing & mask); |
530 | pci_write_config_dword(pdev, addr1, reg); | |
531 | } | |
85cd7251 | 532 | |
1a1b172b SS |
533 | /** |
534 | * hpt372_set_piomode - PIO setup | |
535 | * @ap: ATA interface | |
536 | * @adev: device on the interface | |
537 | * | |
538 | * Perform PIO mode setup. | |
539 | */ | |
540 | ||
541 | static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev) | |
542 | { | |
543 | hpt372_set_mode(ap, adev, adev->pio_mode); | |
669a5db4 JG |
544 | } |
545 | ||
546 | /** | |
547 | * hpt372_set_dmamode - DMA timing setup | |
548 | * @ap: ATA interface | |
549 | * @adev: Device being configured | |
550 | * | |
1a1b172b | 551 | * Set up the channel for MWDMA or UDMA modes. |
669a5db4 | 552 | */ |
85cd7251 | 553 | |
669a5db4 JG |
554 | static void hpt372_set_dmamode(struct ata_port *ap, struct ata_device *adev) |
555 | { | |
1a1b172b | 556 | hpt372_set_mode(ap, adev, adev->dma_mode); |
669a5db4 JG |
557 | } |
558 | ||
559 | /** | |
a51746f4 | 560 | * hpt37x_bmdma_stop - DMA engine stop |
669a5db4 JG |
561 | * @qc: ATA command |
562 | * | |
563 | * Clean up after the HPT372 and later DMA engine | |
564 | */ | |
85cd7251 | 565 | |
669a5db4 JG |
566 | static void hpt37x_bmdma_stop(struct ata_queued_cmd *qc) |
567 | { | |
568 | struct ata_port *ap = qc->ap; | |
569 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
6929da44 | 570 | int mscreg = 0x50 + 4 * ap->port_no; |
669a5db4 | 571 | u8 bwsr_stat, msc_stat; |
85cd7251 | 572 | |
669a5db4 JG |
573 | pci_read_config_byte(pdev, 0x6A, &bwsr_stat); |
574 | pci_read_config_byte(pdev, mscreg, &msc_stat); | |
575 | if (bwsr_stat & (1 << ap->port_no)) | |
576 | pci_write_config_byte(pdev, mscreg, msc_stat | 0x30); | |
577 | ata_bmdma_stop(qc); | |
578 | } | |
579 | ||
580 | ||
581 | static struct scsi_host_template hpt37x_sht = { | |
68d1d07b | 582 | ATA_BMDMA_SHT(DRV_NAME), |
669a5db4 JG |
583 | }; |
584 | ||
585 | /* | |
586 | * Configuration for HPT370 | |
587 | */ | |
85cd7251 | 588 | |
669a5db4 | 589 | static struct ata_port_operations hpt370_port_ops = { |
029cfd6b | 590 | .inherits = &ata_bmdma_port_ops, |
669a5db4 | 591 | |
669a5db4 | 592 | .bmdma_stop = hpt370_bmdma_stop, |
669a5db4 | 593 | |
029cfd6b | 594 | .mode_filter = hpt370_filter, |
9e87be9e | 595 | .cable_detect = hpt37x_cable_detect, |
029cfd6b TH |
596 | .set_piomode = hpt370_set_piomode, |
597 | .set_dmamode = hpt370_set_dmamode, | |
a1efdaba | 598 | .prereset = hpt37x_pre_reset, |
85cd7251 | 599 | }; |
669a5db4 JG |
600 | |
601 | /* | |
602 | * Configuration for HPT370A. Close to 370 but less filters | |
603 | */ | |
85cd7251 | 604 | |
669a5db4 | 605 | static struct ata_port_operations hpt370a_port_ops = { |
029cfd6b | 606 | .inherits = &hpt370_port_ops, |
669a5db4 | 607 | .mode_filter = hpt370a_filter, |
85cd7251 | 608 | }; |
669a5db4 JG |
609 | |
610 | /* | |
8e834c2e SS |
611 | * Configuration for HPT371 and HPT302. Slightly different PIO and DMA |
612 | * mode setting functionality. | |
669a5db4 | 613 | */ |
85cd7251 | 614 | |
8e834c2e | 615 | static struct ata_port_operations hpt302_port_ops = { |
029cfd6b | 616 | .inherits = &ata_bmdma_port_ops, |
669a5db4 | 617 | |
669a5db4 | 618 | .bmdma_stop = hpt37x_bmdma_stop, |
669a5db4 | 619 | |
9e87be9e | 620 | .cable_detect = hpt37x_cable_detect, |
029cfd6b TH |
621 | .set_piomode = hpt372_set_piomode, |
622 | .set_dmamode = hpt372_set_dmamode, | |
a1efdaba | 623 | .prereset = hpt37x_pre_reset, |
85cd7251 | 624 | }; |
669a5db4 JG |
625 | |
626 | /* | |
8e834c2e SS |
627 | * Configuration for HPT372. Mode setting works like 371 and 302 |
628 | * but we have a mode filter. | |
629 | */ | |
630 | ||
631 | static struct ata_port_operations hpt372_port_ops = { | |
632 | .inherits = &hpt302_port_ops, | |
633 | .mode_filter = hpt372_filter, | |
634 | }; | |
635 | ||
636 | /* | |
637 | * Configuration for HPT374. Mode setting and filtering works like 372 | |
a1efdaba | 638 | * but we have a different cable detection procedure for function 1. |
669a5db4 | 639 | */ |
85cd7251 | 640 | |
a1efdaba | 641 | static struct ata_port_operations hpt374_fn1_port_ops = { |
029cfd6b | 642 | .inherits = &hpt372_port_ops, |
9e87be9e | 643 | .cable_detect = hpt374_fn1_cable_detect, |
85cd7251 | 644 | }; |
669a5db4 JG |
645 | |
646 | /** | |
ad452d64 | 647 | * hpt37x_clock_slot - Turn timing to PC clock entry |
669a5db4 JG |
648 | * @freq: Reported frequency timing |
649 | * @base: Base timing | |
650 | * | |
651 | * Turn the timing data intoa clock slot (0 for 33, 1 for 40, 2 for 50 | |
652 | * and 3 for 66Mhz) | |
653 | */ | |
85cd7251 | 654 | |
669a5db4 JG |
655 | static int hpt37x_clock_slot(unsigned int freq, unsigned int base) |
656 | { | |
657 | unsigned int f = (base * freq) / 192; /* Mhz */ | |
658 | if (f < 40) | |
659 | return 0; /* 33Mhz slot */ | |
660 | if (f < 45) | |
661 | return 1; /* 40Mhz slot */ | |
662 | if (f < 55) | |
663 | return 2; /* 50Mhz slot */ | |
664 | return 3; /* 60Mhz slot */ | |
665 | } | |
666 | ||
667 | /** | |
668 | * hpt37x_calibrate_dpll - Calibrate the DPLL loop | |
85cd7251 | 669 | * @dev: PCI device |
669a5db4 JG |
670 | * |
671 | * Perform a calibration cycle on the HPT37x DPLL. Returns 1 if this | |
672 | * succeeds | |
673 | */ | |
674 | ||
675 | static int hpt37x_calibrate_dpll(struct pci_dev *dev) | |
676 | { | |
677 | u8 reg5b; | |
678 | u32 reg5c; | |
679 | int tries; | |
85cd7251 | 680 | |
49bfbd38 | 681 | for (tries = 0; tries < 0x5000; tries++) { |
669a5db4 JG |
682 | udelay(50); |
683 | pci_read_config_byte(dev, 0x5b, ®5b); | |
684 | if (reg5b & 0x80) { | |
685 | /* See if it stays set */ | |
49bfbd38 | 686 | for (tries = 0; tries < 0x1000; tries++) { |
669a5db4 JG |
687 | pci_read_config_byte(dev, 0x5b, ®5b); |
688 | /* Failed ? */ | |
689 | if ((reg5b & 0x80) == 0) | |
690 | return 0; | |
691 | } | |
692 | /* Turn off tuning, we have the DPLL set */ | |
693 | pci_read_config_dword(dev, 0x5c, ®5c); | |
49bfbd38 | 694 | pci_write_config_dword(dev, 0x5c, reg5c & ~0x100); |
669a5db4 JG |
695 | return 1; |
696 | } | |
697 | } | |
698 | /* Never went stable */ | |
699 | return 0; | |
700 | } | |
73946f9f AC |
701 | |
702 | static u32 hpt374_read_freq(struct pci_dev *pdev) | |
703 | { | |
704 | u32 freq; | |
705 | unsigned long io_base = pci_resource_start(pdev, 4); | |
49bfbd38 | 706 | |
73946f9f | 707 | if (PCI_FUNC(pdev->devfn) & 1) { |
40f46f17 AM |
708 | struct pci_dev *pdev_0; |
709 | ||
710 | pdev_0 = pci_get_slot(pdev->bus, pdev->devfn - 1); | |
73946f9f AC |
711 | /* Someone hot plugged the controller on us ? */ |
712 | if (pdev_0 == NULL) | |
713 | return 0; | |
714 | io_base = pci_resource_start(pdev_0, 4); | |
715 | freq = inl(io_base + 0x90); | |
716 | pci_dev_put(pdev_0); | |
40f46f17 | 717 | } else |
73946f9f AC |
718 | freq = inl(io_base + 0x90); |
719 | return freq; | |
720 | } | |
721 | ||
669a5db4 JG |
722 | /** |
723 | * hpt37x_init_one - Initialise an HPT37X/302 | |
724 | * @dev: PCI device | |
725 | * @id: Entry in match table | |
726 | * | |
727 | * Initialise an HPT37x device. There are some interesting complications | |
728 | * here. Firstly the chip may report 366 and be one of several variants. | |
729 | * Secondly all the timings depend on the clock for the chip which we must | |
730 | * detect and look up | |
731 | * | |
732 | * This is the known chip mappings. It may be missing a couple of later | |
733 | * releases. | |
734 | * | |
735 | * Chip version PCI Rev Notes | |
736 | * HPT366 4 (HPT366) 0 Other driver | |
737 | * HPT366 4 (HPT366) 1 Other driver | |
738 | * HPT368 4 (HPT366) 2 Other driver | |
739 | * HPT370 4 (HPT366) 3 UDMA100 | |
740 | * HPT370A 4 (HPT366) 4 UDMA100 | |
741 | * HPT372 4 (HPT366) 5 UDMA133 (1) | |
742 | * HPT372N 4 (HPT366) 6 Other driver | |
743 | * HPT372A 5 (HPT372) 1 UDMA133 (1) | |
744 | * HPT372N 5 (HPT372) 2 Other driver | |
745 | * HPT302 6 (HPT302) 1 UDMA133 | |
746 | * HPT302N 6 (HPT302) 2 Other driver | |
747 | * HPT371 7 (HPT371) * UDMA133 | |
748 | * HPT374 8 (HPT374) * UDMA133 4 channel | |
749 | * HPT372N 9 (HPT372N) * Other driver | |
750 | * | |
751 | * (1) UDMA133 support depends on the bus clock | |
752 | */ | |
85cd7251 | 753 | |
669a5db4 JG |
754 | static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
755 | { | |
756 | /* HPT370 - UDMA100 */ | |
1626aeb8 | 757 | static const struct ata_port_info info_hpt370 = { |
1d2808fd | 758 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
759 | .pio_mask = ATA_PIO4, |
760 | .mwdma_mask = ATA_MWDMA2, | |
bf6263a8 | 761 | .udma_mask = ATA_UDMA5, |
669a5db4 JG |
762 | .port_ops = &hpt370_port_ops |
763 | }; | |
764 | /* HPT370A - UDMA100 */ | |
1626aeb8 | 765 | static const struct ata_port_info info_hpt370a = { |
1d2808fd | 766 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
767 | .pio_mask = ATA_PIO4, |
768 | .mwdma_mask = ATA_MWDMA2, | |
bf6263a8 | 769 | .udma_mask = ATA_UDMA5, |
669a5db4 JG |
770 | .port_ops = &hpt370a_port_ops |
771 | }; | |
fc2698d5 | 772 | /* HPT370 - UDMA66 */ |
1626aeb8 | 773 | static const struct ata_port_info info_hpt370_33 = { |
1d2808fd | 774 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
775 | .pio_mask = ATA_PIO4, |
776 | .mwdma_mask = ATA_MWDMA2, | |
fc2698d5 | 777 | .udma_mask = ATA_UDMA4, |
fcc2f69a AC |
778 | .port_ops = &hpt370_port_ops |
779 | }; | |
fc2698d5 | 780 | /* HPT370A - UDMA66 */ |
1626aeb8 | 781 | static const struct ata_port_info info_hpt370a_33 = { |
1d2808fd | 782 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
783 | .pio_mask = ATA_PIO4, |
784 | .mwdma_mask = ATA_MWDMA2, | |
fc2698d5 | 785 | .udma_mask = ATA_UDMA4, |
fcc2f69a AC |
786 | .port_ops = &hpt370a_port_ops |
787 | }; | |
8e834c2e | 788 | /* HPT372 - UDMA133 */ |
1626aeb8 | 789 | static const struct ata_port_info info_hpt372 = { |
1d2808fd | 790 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
791 | .pio_mask = ATA_PIO4, |
792 | .mwdma_mask = ATA_MWDMA2, | |
bf6263a8 | 793 | .udma_mask = ATA_UDMA6, |
669a5db4 JG |
794 | .port_ops = &hpt372_port_ops |
795 | }; | |
8e834c2e SS |
796 | /* HPT371, 302 - UDMA133 */ |
797 | static const struct ata_port_info info_hpt302 = { | |
798 | .flags = ATA_FLAG_SLAVE_POSS, | |
799 | .pio_mask = ATA_PIO4, | |
800 | .mwdma_mask = ATA_MWDMA2, | |
801 | .udma_mask = ATA_UDMA6, | |
802 | .port_ops = &hpt302_port_ops | |
803 | }; | |
defed559 | 804 | /* HPT374 - UDMA100, function 1 uses different cable_detect method */ |
a1efdaba TH |
805 | static const struct ata_port_info info_hpt374_fn0 = { |
806 | .flags = ATA_FLAG_SLAVE_POSS, | |
14bdef98 EIB |
807 | .pio_mask = ATA_PIO4, |
808 | .mwdma_mask = ATA_MWDMA2, | |
a1efdaba TH |
809 | .udma_mask = ATA_UDMA5, |
810 | .port_ops = &hpt372_port_ops | |
811 | }; | |
812 | static const struct ata_port_info info_hpt374_fn1 = { | |
1d2808fd | 813 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
814 | .pio_mask = ATA_PIO4, |
815 | .mwdma_mask = ATA_MWDMA2, | |
bf6263a8 | 816 | .udma_mask = ATA_UDMA5, |
a1efdaba | 817 | .port_ops = &hpt374_fn1_port_ops |
669a5db4 JG |
818 | }; |
819 | ||
820 | static const int MHz[4] = { 33, 40, 50, 66 }; | |
1626aeb8 | 821 | void *private_data = NULL; |
887125e3 | 822 | const struct ata_port_info *ppi[] = { NULL, NULL }; |
89d3b360 | 823 | u8 rev = dev->revision; |
669a5db4 | 824 | u8 irqmask; |
fcc2f69a | 825 | u8 mcr1; |
669a5db4 | 826 | u32 freq; |
fcc2f69a | 827 | int prefer_dpll = 1; |
a617c09f | 828 | |
fcc2f69a | 829 | unsigned long iobase = pci_resource_start(dev, 4); |
669a5db4 JG |
830 | |
831 | const struct hpt_chip *chip_table; | |
832 | int clock_slot; | |
f08048e9 TH |
833 | int rc; |
834 | ||
835 | rc = pcim_enable_device(dev); | |
836 | if (rc) | |
837 | return rc; | |
669a5db4 | 838 | |
910f7bb1 SS |
839 | switch (dev->device) { |
840 | case PCI_DEVICE_ID_TTI_HPT366: | |
669a5db4 JG |
841 | /* May be a later chip in disguise. Check */ |
842 | /* Older chips are in the HPT366 driver. Ignore them */ | |
89d3b360 | 843 | if (rev < 3) |
669a5db4 JG |
844 | return -ENODEV; |
845 | /* N series chips have their own driver. Ignore */ | |
89d3b360 | 846 | if (rev == 6) |
669a5db4 JG |
847 | return -ENODEV; |
848 | ||
49bfbd38 SS |
849 | switch (rev) { |
850 | case 3: | |
851 | ppi[0] = &info_hpt370; | |
852 | chip_table = &hpt370; | |
853 | prefer_dpll = 0; | |
854 | break; | |
855 | case 4: | |
856 | ppi[0] = &info_hpt370a; | |
857 | chip_table = &hpt370a; | |
858 | prefer_dpll = 0; | |
859 | break; | |
860 | case 5: | |
861 | ppi[0] = &info_hpt372; | |
862 | chip_table = &hpt372; | |
863 | break; | |
864 | default: | |
f06c13aa HR |
865 | dev_err(&dev->dev, |
866 | "Unknown HPT366 subtype, please report (%d)\n", | |
8d7b1c70 | 867 | rev); |
49bfbd38 | 868 | return -ENODEV; |
669a5db4 | 869 | } |
910f7bb1 SS |
870 | break; |
871 | case PCI_DEVICE_ID_TTI_HPT372: | |
872 | /* 372N if rev >= 2 */ | |
873 | if (rev >= 2) | |
874 | return -ENODEV; | |
875 | ppi[0] = &info_hpt372; | |
876 | chip_table = &hpt372a; | |
877 | break; | |
878 | case PCI_DEVICE_ID_TTI_HPT302: | |
879 | /* 302N if rev > 1 */ | |
880 | if (rev > 1) | |
881 | return -ENODEV; | |
882 | ppi[0] = &info_hpt302; | |
883 | /* Check this */ | |
884 | chip_table = &hpt302; | |
885 | break; | |
886 | case PCI_DEVICE_ID_TTI_HPT371: | |
887 | if (rev > 1) | |
888 | return -ENODEV; | |
889 | ppi[0] = &info_hpt302; | |
890 | chip_table = &hpt371; | |
891 | /* | |
892 | * Single channel device, master is not present but the BIOS | |
893 | * (or us for non x86) must mark it absent | |
894 | */ | |
895 | pci_read_config_byte(dev, 0x50, &mcr1); | |
896 | mcr1 &= ~0x04; | |
897 | pci_write_config_byte(dev, 0x50, mcr1); | |
898 | break; | |
899 | case PCI_DEVICE_ID_TTI_HPT374: | |
900 | chip_table = &hpt374; | |
901 | if (!(PCI_FUNC(dev->devfn) & 1)) | |
902 | *ppi = &info_hpt374_fn0; | |
903 | else | |
904 | *ppi = &info_hpt374_fn1; | |
905 | break; | |
906 | default: | |
f06c13aa HR |
907 | dev_err(&dev->dev, "PCI table is bogus, please report (%d)\n", |
908 | dev->device); | |
910f7bb1 | 909 | return -ENODEV; |
669a5db4 JG |
910 | } |
911 | /* Ok so this is a chip we support */ | |
912 | ||
913 | pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4)); | |
914 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78); | |
915 | pci_write_config_byte(dev, PCI_MIN_GNT, 0x08); | |
916 | pci_write_config_byte(dev, PCI_MAX_LAT, 0x08); | |
917 | ||
918 | pci_read_config_byte(dev, 0x5A, &irqmask); | |
919 | irqmask &= ~0x10; | |
920 | pci_write_config_byte(dev, 0x5a, irqmask); | |
921 | ||
922 | /* | |
923 | * default to pci clock. make sure MA15/16 are set to output | |
924 | * to prevent drives having problems with 40-pin cables. Needed | |
925 | * for some drives such as IBM-DTLA which will not enter ready | |
926 | * state on reset when PDIAG is a input. | |
927 | */ | |
928 | ||
85cd7251 | 929 | pci_write_config_byte(dev, 0x5b, 0x23); |
a617c09f | 930 | |
fcc2f69a AC |
931 | /* |
932 | * HighPoint does this for HPT372A. | |
933 | * NOTE: This register is only writeable via I/O space. | |
934 | */ | |
935 | if (chip_table == &hpt372a) | |
936 | outb(0x0e, iobase + 0x9c); | |
85cd7251 | 937 | |
49bfbd38 SS |
938 | /* |
939 | * Some devices do not let this value be accessed via PCI space | |
940 | * according to the old driver. In addition we must use the value | |
941 | * from FN 0 on the HPT374. | |
942 | */ | |
73946f9f AC |
943 | |
944 | if (chip_table == &hpt374) { | |
945 | freq = hpt374_read_freq(dev); | |
946 | if (freq == 0) | |
947 | return -ENODEV; | |
948 | } else | |
949 | freq = inl(iobase + 0x90); | |
fcc2f69a | 950 | |
669a5db4 JG |
951 | if ((freq >> 12) != 0xABCDE) { |
952 | int i; | |
5f6b0f2d | 953 | u16 sr; |
669a5db4 | 954 | u32 total = 0; |
85cd7251 | 955 | |
f06c13aa | 956 | dev_warn(&dev->dev, "BIOS has not set timing clocks\n"); |
85cd7251 | 957 | |
669a5db4 | 958 | /* This is the process the HPT371 BIOS is reported to use */ |
49bfbd38 | 959 | for (i = 0; i < 128; i++) { |
5f6b0f2d | 960 | pci_read_config_word(dev, 0x78, &sr); |
fcc2f69a | 961 | total += sr & 0x1FF; |
669a5db4 JG |
962 | udelay(15); |
963 | } | |
964 | freq = total / 128; | |
965 | } | |
966 | freq &= 0x1FF; | |
85cd7251 | 967 | |
669a5db4 JG |
968 | /* |
969 | * Turn the frequency check into a band and then find a timing | |
970 | * table to match it. | |
971 | */ | |
a617c09f | 972 | |
669a5db4 | 973 | clock_slot = hpt37x_clock_slot(freq, chip_table->base); |
fcc2f69a | 974 | if (chip_table->clocks[clock_slot] == NULL || prefer_dpll) { |
669a5db4 JG |
975 | /* |
976 | * We need to try PLL mode instead | |
fcc2f69a AC |
977 | * |
978 | * For non UDMA133 capable devices we should | |
979 | * use a 50MHz DPLL by choice | |
669a5db4 | 980 | */ |
fcc2f69a | 981 | unsigned int f_low, f_high; |
960c8a10 | 982 | int dpll, adjust; |
a617c09f | 983 | |
960c8a10 | 984 | /* Compute DPLL */ |
887125e3 | 985 | dpll = (ppi[0]->udma_mask & 0xC0) ? 3 : 2; |
a617c09f | 986 | |
960c8a10 | 987 | f_low = (MHz[clock_slot] * 48) / MHz[dpll]; |
fcc2f69a | 988 | f_high = f_low + 2; |
960c8a10 AC |
989 | if (clock_slot > 1) |
990 | f_high += 2; | |
fcc2f69a AC |
991 | |
992 | /* Select the DPLL clock. */ | |
993 | pci_write_config_byte(dev, 0x5b, 0x21); | |
49bfbd38 SS |
994 | pci_write_config_dword(dev, 0x5C, |
995 | (f_high << 16) | f_low | 0x100); | |
85cd7251 | 996 | |
49bfbd38 | 997 | for (adjust = 0; adjust < 8; adjust++) { |
669a5db4 JG |
998 | if (hpt37x_calibrate_dpll(dev)) |
999 | break; | |
49bfbd38 SS |
1000 | /* |
1001 | * See if it'll settle at a fractionally | |
1002 | * different clock | |
1003 | */ | |
64a81709 AC |
1004 | if (adjust & 1) |
1005 | f_low -= adjust >> 1; | |
1006 | else | |
1007 | f_high += adjust >> 1; | |
49bfbd38 SS |
1008 | pci_write_config_dword(dev, 0x5C, |
1009 | (f_high << 16) | f_low | 0x100); | |
669a5db4 JG |
1010 | } |
1011 | if (adjust == 8) { | |
f06c13aa | 1012 | dev_err(&dev->dev, "DPLL did not stabilize!\n"); |
669a5db4 JG |
1013 | return -ENODEV; |
1014 | } | |
960c8a10 | 1015 | if (dpll == 3) |
1626aeb8 | 1016 | private_data = (void *)hpt37x_timings_66; |
fcc2f69a | 1017 | else |
1626aeb8 | 1018 | private_data = (void *)hpt37x_timings_50; |
85cd7251 | 1019 | |
f06c13aa | 1020 | dev_info(&dev->dev, "bus clock %dMHz, using %dMHz DPLL\n", |
40d69ba0 | 1021 | MHz[clock_slot], MHz[dpll]); |
669a5db4 | 1022 | } else { |
1626aeb8 | 1023 | private_data = (void *)chip_table->clocks[clock_slot]; |
669a5db4 | 1024 | /* |
a4734468 AC |
1025 | * Perform a final fixup. Note that we will have used the |
1026 | * DPLL on the HPT372 which means we don't have to worry | |
1027 | * about lack of UDMA133 support on lower clocks | |
49bfbd38 | 1028 | */ |
85cd7251 | 1029 | |
887125e3 TH |
1030 | if (clock_slot < 2 && ppi[0] == &info_hpt370) |
1031 | ppi[0] = &info_hpt370_33; | |
1032 | if (clock_slot < 2 && ppi[0] == &info_hpt370a) | |
1033 | ppi[0] = &info_hpt370a_33; | |
40d69ba0 | 1034 | |
f06c13aa | 1035 | dev_info(&dev->dev, "%s using %dMHz bus clock\n", |
40d69ba0 | 1036 | chip_table->name, MHz[clock_slot]); |
669a5db4 | 1037 | } |
fcc2f69a | 1038 | |
669a5db4 | 1039 | /* Now kick off ATA set up */ |
1c5afdf7 | 1040 | return ata_pci_bmdma_init_one(dev, ppi, &hpt37x_sht, private_data, 0); |
669a5db4 JG |
1041 | } |
1042 | ||
2d2744fc JG |
1043 | static const struct pci_device_id hpt37x[] = { |
1044 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), }, | |
1045 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT371), }, | |
1046 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT372), }, | |
1047 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT374), }, | |
1048 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT302), }, | |
1049 | ||
1050 | { }, | |
669a5db4 JG |
1051 | }; |
1052 | ||
1053 | static struct pci_driver hpt37x_pci_driver = { | |
49bfbd38 | 1054 | .name = DRV_NAME, |
669a5db4 | 1055 | .id_table = hpt37x, |
49bfbd38 | 1056 | .probe = hpt37x_init_one, |
669a5db4 JG |
1057 | .remove = ata_pci_remove_one |
1058 | }; | |
1059 | ||
2fc75da0 | 1060 | module_pci_driver(hpt37x_pci_driver); |
669a5db4 | 1061 | |
669a5db4 JG |
1062 | MODULE_AUTHOR("Alan Cox"); |
1063 | MODULE_DESCRIPTION("low-level driver for the Highpoint HPT37x/30x"); | |
1064 | MODULE_LICENSE("GPL"); | |
1065 | MODULE_DEVICE_TABLE(pci, hpt37x); | |
1066 | MODULE_VERSION(DRV_VERSION); |