Commit | Line | Data |
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669a5db4 JG |
1 | /* |
2 | * Libata driver for the highpoint 37x and 30x UDMA66 ATA controllers. | |
3 | * | |
4 | * This driver is heavily based upon: | |
5 | * | |
6 | * linux/drivers/ide/pci/hpt366.c Version 0.36 April 25, 2003 | |
7 | * | |
8 | * Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org> | |
9 | * Portions Copyright (C) 2001 Sun Microsystems, Inc. | |
10 | * Portions Copyright (C) 2003 Red Hat Inc | |
265b7215 | 11 | * Portions Copyright (C) 2005-2009 MontaVista Software, Inc. |
669a5db4 JG |
12 | * |
13 | * TODO | |
d44a65f7 | 14 | * Look into engine reset on timeout errors. Should not be required. |
669a5db4 JG |
15 | */ |
16 | ||
17 | #include <linux/kernel.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/pci.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/blkdev.h> | |
22 | #include <linux/delay.h> | |
23 | #include <scsi/scsi_host.h> | |
24 | #include <linux/libata.h> | |
25 | ||
26 | #define DRV_NAME "pata_hpt37x" | |
265b7215 | 27 | #define DRV_VERSION "0.6.12" |
669a5db4 JG |
28 | |
29 | struct hpt_clock { | |
30 | u8 xfer_speed; | |
31 | u32 timing; | |
32 | }; | |
33 | ||
34 | struct hpt_chip { | |
35 | const char *name; | |
36 | unsigned int base; | |
37 | struct hpt_clock const *clocks[4]; | |
38 | }; | |
39 | ||
40 | /* key for bus clock timings | |
41 | * bit | |
42 | * 0:3 data_high_time. inactive time of DIOW_/DIOR_ for PIO and MW | |
43 | * DMA. cycles = value + 1 | |
44 | * 4:8 data_low_time. active time of DIOW_/DIOR_ for PIO and MW | |
45 | * DMA. cycles = value + 1 | |
46 | * 9:12 cmd_high_time. inactive time of DIOW_/DIOR_ during task file | |
47 | * register access. | |
48 | * 13:17 cmd_low_time. active time of DIOW_/DIOR_ during task file | |
49 | * register access. | |
50 | * 18:21 udma_cycle_time. clock freq and clock cycles for UDMA xfer. | |
51 | * during task file register access. | |
52 | * 22:24 pre_high_time. time to initialize 1st cycle for PIO and MW DMA | |
53 | * xfer. | |
54 | * 25:27 cmd_pre_high_time. time to initialize 1st PIO cycle for task | |
55 | * register access. | |
56 | * 28 UDMA enable | |
57 | * 29 DMA enable | |
58 | * 30 PIO_MST enable. if set, the chip is in bus master mode during | |
59 | * PIO. | |
60 | * 31 FIFO enable. | |
61 | */ | |
62 | ||
fcc2f69a AC |
63 | static struct hpt_clock hpt37x_timings_33[] = { |
64 | { XFER_UDMA_6, 0x12446231 }, /* 0x12646231 ?? */ | |
65 | { XFER_UDMA_5, 0x12446231 }, | |
66 | { XFER_UDMA_4, 0x12446231 }, | |
67 | { XFER_UDMA_3, 0x126c6231 }, | |
68 | { XFER_UDMA_2, 0x12486231 }, | |
69 | { XFER_UDMA_1, 0x124c6233 }, | |
70 | { XFER_UDMA_0, 0x12506297 }, | |
71 | ||
72 | { XFER_MW_DMA_2, 0x22406c31 }, | |
73 | { XFER_MW_DMA_1, 0x22406c33 }, | |
74 | { XFER_MW_DMA_0, 0x22406c97 }, | |
75 | ||
76 | { XFER_PIO_4, 0x06414e31 }, | |
77 | { XFER_PIO_3, 0x06414e42 }, | |
78 | { XFER_PIO_2, 0x06414e53 }, | |
79 | { XFER_PIO_1, 0x06814e93 }, | |
80 | { XFER_PIO_0, 0x06814ea7 } | |
669a5db4 JG |
81 | }; |
82 | ||
fcc2f69a AC |
83 | static struct hpt_clock hpt37x_timings_50[] = { |
84 | { XFER_UDMA_6, 0x12848242 }, | |
85 | { XFER_UDMA_5, 0x12848242 }, | |
86 | { XFER_UDMA_4, 0x12ac8242 }, | |
87 | { XFER_UDMA_3, 0x128c8242 }, | |
88 | { XFER_UDMA_2, 0x120c8242 }, | |
89 | { XFER_UDMA_1, 0x12148254 }, | |
90 | { XFER_UDMA_0, 0x121882ea }, | |
91 | ||
92 | { XFER_MW_DMA_2, 0x22808242 }, | |
93 | { XFER_MW_DMA_1, 0x22808254 }, | |
94 | { XFER_MW_DMA_0, 0x228082ea }, | |
95 | ||
96 | { XFER_PIO_4, 0x0a81f442 }, | |
97 | { XFER_PIO_3, 0x0a81f443 }, | |
98 | { XFER_PIO_2, 0x0a81f454 }, | |
99 | { XFER_PIO_1, 0x0ac1f465 }, | |
100 | { XFER_PIO_0, 0x0ac1f48a } | |
669a5db4 JG |
101 | }; |
102 | ||
fcc2f69a AC |
103 | static struct hpt_clock hpt37x_timings_66[] = { |
104 | { XFER_UDMA_6, 0x1c869c62 }, | |
105 | { XFER_UDMA_5, 0x1cae9c62 }, /* 0x1c8a9c62 */ | |
106 | { XFER_UDMA_4, 0x1c8a9c62 }, | |
107 | { XFER_UDMA_3, 0x1c8e9c62 }, | |
108 | { XFER_UDMA_2, 0x1c929c62 }, | |
109 | { XFER_UDMA_1, 0x1c9a9c62 }, | |
110 | { XFER_UDMA_0, 0x1c829c62 }, | |
111 | ||
112 | { XFER_MW_DMA_2, 0x2c829c62 }, | |
113 | { XFER_MW_DMA_1, 0x2c829c66 }, | |
114 | { XFER_MW_DMA_0, 0x2c829d2e }, | |
115 | ||
116 | { XFER_PIO_4, 0x0c829c62 }, | |
117 | { XFER_PIO_3, 0x0c829c84 }, | |
118 | { XFER_PIO_2, 0x0c829ca6 }, | |
119 | { XFER_PIO_1, 0x0d029d26 }, | |
120 | { XFER_PIO_0, 0x0d029d5e } | |
669a5db4 JG |
121 | }; |
122 | ||
669a5db4 JG |
123 | |
124 | static const struct hpt_chip hpt370 = { | |
125 | "HPT370", | |
126 | 48, | |
127 | { | |
fcc2f69a | 128 | hpt37x_timings_33, |
669a5db4 JG |
129 | NULL, |
130 | NULL, | |
a4734468 | 131 | NULL |
669a5db4 JG |
132 | } |
133 | }; | |
134 | ||
135 | static const struct hpt_chip hpt370a = { | |
136 | "HPT370A", | |
137 | 48, | |
138 | { | |
fcc2f69a | 139 | hpt37x_timings_33, |
669a5db4 | 140 | NULL, |
fcc2f69a | 141 | hpt37x_timings_50, |
a4734468 | 142 | NULL |
669a5db4 JG |
143 | } |
144 | }; | |
145 | ||
146 | static const struct hpt_chip hpt372 = { | |
147 | "HPT372", | |
148 | 55, | |
149 | { | |
fcc2f69a | 150 | hpt37x_timings_33, |
669a5db4 | 151 | NULL, |
fcc2f69a AC |
152 | hpt37x_timings_50, |
153 | hpt37x_timings_66 | |
669a5db4 JG |
154 | } |
155 | }; | |
156 | ||
157 | static const struct hpt_chip hpt302 = { | |
158 | "HPT302", | |
159 | 66, | |
160 | { | |
fcc2f69a | 161 | hpt37x_timings_33, |
669a5db4 | 162 | NULL, |
fcc2f69a AC |
163 | hpt37x_timings_50, |
164 | hpt37x_timings_66 | |
669a5db4 JG |
165 | } |
166 | }; | |
167 | ||
168 | static const struct hpt_chip hpt371 = { | |
169 | "HPT371", | |
170 | 66, | |
171 | { | |
fcc2f69a | 172 | hpt37x_timings_33, |
669a5db4 | 173 | NULL, |
fcc2f69a AC |
174 | hpt37x_timings_50, |
175 | hpt37x_timings_66 | |
669a5db4 JG |
176 | } |
177 | }; | |
178 | ||
179 | static const struct hpt_chip hpt372a = { | |
180 | "HPT372A", | |
181 | 66, | |
182 | { | |
fcc2f69a | 183 | hpt37x_timings_33, |
669a5db4 | 184 | NULL, |
fcc2f69a AC |
185 | hpt37x_timings_50, |
186 | hpt37x_timings_66 | |
669a5db4 JG |
187 | } |
188 | }; | |
189 | ||
190 | static const struct hpt_chip hpt374 = { | |
191 | "HPT374", | |
192 | 48, | |
193 | { | |
fcc2f69a | 194 | hpt37x_timings_33, |
669a5db4 JG |
195 | NULL, |
196 | NULL, | |
197 | NULL | |
198 | } | |
199 | }; | |
200 | ||
201 | /** | |
202 | * hpt37x_find_mode - reset the hpt37x bus | |
203 | * @ap: ATA port | |
204 | * @speed: transfer mode | |
205 | * | |
206 | * Return the 32bit register programming information for this channel | |
207 | * that matches the speed provided. | |
208 | */ | |
85cd7251 | 209 | |
669a5db4 JG |
210 | static u32 hpt37x_find_mode(struct ata_port *ap, int speed) |
211 | { | |
212 | struct hpt_clock *clocks = ap->host->private_data; | |
85cd7251 | 213 | |
669a5db4 JG |
214 | while(clocks->xfer_speed) { |
215 | if (clocks->xfer_speed == speed) | |
216 | return clocks->timing; | |
217 | clocks++; | |
218 | } | |
219 | BUG(); | |
220 | return 0xffffffffU; /* silence compiler warning */ | |
221 | } | |
222 | ||
223 | static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, const char *list[]) | |
224 | { | |
8bfa79fc | 225 | unsigned char model_num[ATA_ID_PROD_LEN + 1]; |
669a5db4 JG |
226 | int i = 0; |
227 | ||
8bfa79fc | 228 | ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); |
669a5db4 | 229 | |
8bfa79fc TH |
230 | while (list[i] != NULL) { |
231 | if (!strcmp(list[i], model_num)) { | |
85cd7251 | 232 | printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n", |
669a5db4 JG |
233 | modestr, list[i]); |
234 | return 1; | |
235 | } | |
236 | i++; | |
237 | } | |
238 | return 0; | |
239 | } | |
240 | ||
241 | static const char *bad_ata33[] = { | |
242 | "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", "Maxtor 90845U3", "Maxtor 90650U2", | |
243 | "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2", | |
244 | "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4", | |
245 | "Maxtor 90510D4", | |
246 | "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2", | |
247 | "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4", | |
248 | "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2", | |
249 | NULL | |
250 | }; | |
251 | ||
252 | static const char *bad_ata100_5[] = { | |
253 | "IBM-DTLA-307075", | |
254 | "IBM-DTLA-307060", | |
255 | "IBM-DTLA-307045", | |
256 | "IBM-DTLA-307030", | |
257 | "IBM-DTLA-307020", | |
258 | "IBM-DTLA-307015", | |
259 | "IBM-DTLA-305040", | |
260 | "IBM-DTLA-305030", | |
261 | "IBM-DTLA-305020", | |
262 | "IC35L010AVER07-0", | |
263 | "IC35L020AVER07-0", | |
264 | "IC35L030AVER07-0", | |
265 | "IC35L040AVER07-0", | |
266 | "IC35L060AVER07-0", | |
267 | "WDC AC310200R", | |
268 | NULL | |
269 | }; | |
270 | ||
271 | /** | |
272 | * hpt370_filter - mode selection filter | |
669a5db4 JG |
273 | * @adev: ATA device |
274 | * | |
275 | * Block UDMA on devices that cause trouble with this controller. | |
276 | */ | |
85cd7251 | 277 | |
a76b62ca | 278 | static unsigned long hpt370_filter(struct ata_device *adev, unsigned long mask) |
669a5db4 | 279 | { |
6929da44 | 280 | if (adev->class == ATA_DEV_ATA) { |
669a5db4 JG |
281 | if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33)) |
282 | mask &= ~ATA_MASK_UDMA; | |
283 | if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5)) | |
6ddd6861 | 284 | mask &= ~(0xE0 << ATA_SHIFT_UDMA); |
669a5db4 | 285 | } |
9363c382 | 286 | return ata_bmdma_mode_filter(adev, mask); |
669a5db4 JG |
287 | } |
288 | ||
289 | /** | |
290 | * hpt370a_filter - mode selection filter | |
669a5db4 JG |
291 | * @adev: ATA device |
292 | * | |
293 | * Block UDMA on devices that cause trouble with this controller. | |
294 | */ | |
85cd7251 | 295 | |
a76b62ca | 296 | static unsigned long hpt370a_filter(struct ata_device *adev, unsigned long mask) |
669a5db4 | 297 | { |
73946f9f | 298 | if (adev->class == ATA_DEV_ATA) { |
669a5db4 | 299 | if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5)) |
6ddd6861 | 300 | mask &= ~(0xE0 << ATA_SHIFT_UDMA); |
669a5db4 | 301 | } |
9363c382 | 302 | return ata_bmdma_mode_filter(adev, mask); |
669a5db4 | 303 | } |
85cd7251 | 304 | |
669a5db4 JG |
305 | /** |
306 | * hpt37x_pre_reset - reset the hpt37x bus | |
cc0680a5 | 307 | * @link: ATA link to reset |
d4b2bab4 | 308 | * @deadline: deadline jiffies for the operation |
669a5db4 JG |
309 | * |
310 | * Perform the initial reset handling for the 370/372 and 374 func 0 | |
311 | */ | |
85cd7251 | 312 | |
cc0680a5 | 313 | static int hpt37x_pre_reset(struct ata_link *link, unsigned long deadline) |
669a5db4 JG |
314 | { |
315 | u8 scr2, ata66; | |
cc0680a5 | 316 | struct ata_port *ap = link->ap; |
669a5db4 | 317 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
b5bf24b9 AC |
318 | static const struct pci_bits hpt37x_enable_bits[] = { |
319 | { 0x50, 1, 0x04, 0x04 }, | |
320 | { 0x54, 1, 0x04, 0x04 } | |
321 | }; | |
322 | if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no])) | |
323 | return -ENOENT; | |
f20b16ff | 324 | |
669a5db4 JG |
325 | pci_read_config_byte(pdev, 0x5B, &scr2); |
326 | pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01); | |
327 | /* Cable register now active */ | |
328 | pci_read_config_byte(pdev, 0x5A, &ata66); | |
329 | /* Restore state */ | |
330 | pci_write_config_byte(pdev, 0x5B, scr2); | |
85cd7251 | 331 | |
22d5c760 | 332 | if (ata66 & (2 >> ap->port_no)) |
669a5db4 JG |
333 | ap->cbl = ATA_CBL_PATA40; |
334 | else | |
335 | ap->cbl = ATA_CBL_PATA80; | |
336 | ||
337 | /* Reset the state machine */ | |
fcc2f69a | 338 | pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37); |
669a5db4 | 339 | udelay(100); |
85cd7251 | 340 | |
9363c382 | 341 | return ata_sff_prereset(link, deadline); |
669a5db4 JG |
342 | } |
343 | ||
a1efdaba | 344 | static int hpt374_fn1_pre_reset(struct ata_link *link, unsigned long deadline) |
669a5db4 | 345 | { |
b5bf24b9 AC |
346 | static const struct pci_bits hpt37x_enable_bits[] = { |
347 | { 0x50, 1, 0x04, 0x04 }, | |
348 | { 0x54, 1, 0x04, 0x04 } | |
349 | }; | |
73946f9f | 350 | u16 mcr3; |
669a5db4 | 351 | u8 ata66; |
cc0680a5 | 352 | struct ata_port *ap = link->ap; |
669a5db4 | 353 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
73946f9f | 354 | unsigned int mcrbase = 0x50 + 4 * ap->port_no; |
b5bf24b9 AC |
355 | |
356 | if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no])) | |
357 | return -ENOENT; | |
f20b16ff | 358 | |
669a5db4 | 359 | /* Do the extra channel work */ |
73946f9f | 360 | pci_read_config_word(pdev, mcrbase + 2, &mcr3); |
669a5db4 | 361 | /* Set bit 15 of 0x52 to enable TCBLID as input |
669a5db4 | 362 | */ |
73946f9f | 363 | pci_write_config_word(pdev, mcrbase + 2, mcr3 | 0x8000); |
669a5db4 JG |
364 | pci_read_config_byte(pdev, 0x5A, &ata66); |
365 | /* Reset TCBLID/FCBLID to output */ | |
f941b168 | 366 | pci_write_config_word(pdev, mcrbase + 2, mcr3); |
85cd7251 | 367 | |
73946f9f | 368 | if (ata66 & (2 >> ap->port_no)) |
669a5db4 JG |
369 | ap->cbl = ATA_CBL_PATA40; |
370 | else | |
371 | ap->cbl = ATA_CBL_PATA80; | |
372 | ||
373 | /* Reset the state machine */ | |
fcc2f69a | 374 | pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37); |
669a5db4 | 375 | udelay(100); |
85cd7251 | 376 | |
9363c382 | 377 | return ata_sff_prereset(link, deadline); |
669a5db4 JG |
378 | } |
379 | ||
669a5db4 JG |
380 | /** |
381 | * hpt370_set_piomode - PIO setup | |
382 | * @ap: ATA interface | |
383 | * @adev: device on the interface | |
384 | * | |
85cd7251 | 385 | * Perform PIO mode setup. |
669a5db4 | 386 | */ |
85cd7251 | 387 | |
669a5db4 JG |
388 | static void hpt370_set_piomode(struct ata_port *ap, struct ata_device *adev) |
389 | { | |
390 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
391 | u32 addr1, addr2; | |
392 | u32 reg; | |
393 | u32 mode; | |
394 | u8 fast; | |
395 | ||
396 | addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no); | |
397 | addr2 = 0x51 + 4 * ap->port_no; | |
85cd7251 | 398 | |
669a5db4 JG |
399 | /* Fast interrupt prediction disable, hold off interrupt disable */ |
400 | pci_read_config_byte(pdev, addr2, &fast); | |
401 | fast &= ~0x02; | |
402 | fast |= 0x01; | |
403 | pci_write_config_byte(pdev, addr2, fast); | |
85cd7251 | 404 | |
669a5db4 JG |
405 | pci_read_config_dword(pdev, addr1, ®); |
406 | mode = hpt37x_find_mode(ap, adev->pio_mode); | |
407 | mode &= ~0x8000000; /* No FIFO in PIO */ | |
408 | mode &= ~0x30070000; /* Leave config bits alone */ | |
409 | reg &= 0x30070000; /* Strip timing bits */ | |
410 | pci_write_config_dword(pdev, addr1, reg | mode); | |
411 | } | |
412 | ||
413 | /** | |
414 | * hpt370_set_dmamode - DMA timing setup | |
415 | * @ap: ATA interface | |
416 | * @adev: Device being configured | |
417 | * | |
418 | * Set up the channel for MWDMA or UDMA modes. Much the same as with | |
419 | * PIO, load the mode number and then set MWDMA or UDMA flag. | |
420 | */ | |
85cd7251 | 421 | |
669a5db4 JG |
422 | static void hpt370_set_dmamode(struct ata_port *ap, struct ata_device *adev) |
423 | { | |
424 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
425 | u32 addr1, addr2; | |
426 | u32 reg; | |
427 | u32 mode; | |
428 | u8 fast; | |
429 | ||
430 | addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no); | |
431 | addr2 = 0x51 + 4 * ap->port_no; | |
85cd7251 | 432 | |
669a5db4 JG |
433 | /* Fast interrupt prediction disable, hold off interrupt disable */ |
434 | pci_read_config_byte(pdev, addr2, &fast); | |
435 | fast &= ~0x02; | |
436 | fast |= 0x01; | |
437 | pci_write_config_byte(pdev, addr2, fast); | |
85cd7251 | 438 | |
669a5db4 JG |
439 | pci_read_config_dword(pdev, addr1, ®); |
440 | mode = hpt37x_find_mode(ap, adev->dma_mode); | |
441 | mode |= 0x8000000; /* FIFO in MWDMA or UDMA */ | |
442 | mode &= ~0xC0000000; /* Leave config bits alone */ | |
443 | reg &= 0xC0000000; /* Strip timing bits */ | |
444 | pci_write_config_dword(pdev, addr1, reg | mode); | |
445 | } | |
446 | ||
669a5db4 JG |
447 | /** |
448 | * hpt370_bmdma_end - DMA engine stop | |
449 | * @qc: ATA command | |
450 | * | |
451 | * Work around the HPT370 DMA engine. | |
452 | */ | |
85cd7251 | 453 | |
669a5db4 JG |
454 | static void hpt370_bmdma_stop(struct ata_queued_cmd *qc) |
455 | { | |
456 | struct ata_port *ap = qc->ap; | |
457 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
0d5ff566 | 458 | u8 dma_stat = ioread8(ap->ioaddr.bmdma_addr + 2); |
669a5db4 | 459 | u8 dma_cmd; |
0d5ff566 | 460 | void __iomem *bmdma = ap->ioaddr.bmdma_addr; |
85cd7251 | 461 | |
669a5db4 JG |
462 | if (dma_stat & 0x01) { |
463 | udelay(20); | |
0d5ff566 | 464 | dma_stat = ioread8(bmdma + 2); |
669a5db4 JG |
465 | } |
466 | if (dma_stat & 0x01) { | |
467 | /* Clear the engine */ | |
468 | pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37); | |
469 | udelay(10); | |
470 | /* Stop DMA */ | |
0d5ff566 TH |
471 | dma_cmd = ioread8(bmdma ); |
472 | iowrite8(dma_cmd & 0xFE, bmdma); | |
669a5db4 | 473 | /* Clear Error */ |
0d5ff566 TH |
474 | dma_stat = ioread8(bmdma + 2); |
475 | iowrite8(dma_stat | 0x06 , bmdma + 2); | |
669a5db4 JG |
476 | /* Clear the engine */ |
477 | pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37); | |
478 | udelay(10); | |
479 | } | |
480 | ata_bmdma_stop(qc); | |
481 | } | |
482 | ||
483 | /** | |
484 | * hpt372_set_piomode - PIO setup | |
485 | * @ap: ATA interface | |
486 | * @adev: device on the interface | |
487 | * | |
85cd7251 | 488 | * Perform PIO mode setup. |
669a5db4 | 489 | */ |
85cd7251 | 490 | |
669a5db4 JG |
491 | static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev) |
492 | { | |
493 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
494 | u32 addr1, addr2; | |
495 | u32 reg; | |
496 | u32 mode; | |
497 | u8 fast; | |
498 | ||
499 | addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no); | |
500 | addr2 = 0x51 + 4 * ap->port_no; | |
85cd7251 | 501 | |
669a5db4 JG |
502 | /* Fast interrupt prediction disable, hold off interrupt disable */ |
503 | pci_read_config_byte(pdev, addr2, &fast); | |
504 | fast &= ~0x07; | |
505 | pci_write_config_byte(pdev, addr2, fast); | |
85cd7251 | 506 | |
669a5db4 JG |
507 | pci_read_config_dword(pdev, addr1, ®); |
508 | mode = hpt37x_find_mode(ap, adev->pio_mode); | |
85cd7251 | 509 | |
669a5db4 JG |
510 | printk("Find mode for %d reports %X\n", adev->pio_mode, mode); |
511 | mode &= ~0x80000000; /* No FIFO in PIO */ | |
512 | mode &= ~0x30070000; /* Leave config bits alone */ | |
513 | reg &= 0x30070000; /* Strip timing bits */ | |
514 | pci_write_config_dword(pdev, addr1, reg | mode); | |
515 | } | |
516 | ||
517 | /** | |
518 | * hpt372_set_dmamode - DMA timing setup | |
519 | * @ap: ATA interface | |
520 | * @adev: Device being configured | |
521 | * | |
522 | * Set up the channel for MWDMA or UDMA modes. Much the same as with | |
523 | * PIO, load the mode number and then set MWDMA or UDMA flag. | |
524 | */ | |
85cd7251 | 525 | |
669a5db4 JG |
526 | static void hpt372_set_dmamode(struct ata_port *ap, struct ata_device *adev) |
527 | { | |
528 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
529 | u32 addr1, addr2; | |
530 | u32 reg; | |
531 | u32 mode; | |
532 | u8 fast; | |
533 | ||
534 | addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no); | |
535 | addr2 = 0x51 + 4 * ap->port_no; | |
85cd7251 | 536 | |
669a5db4 JG |
537 | /* Fast interrupt prediction disable, hold off interrupt disable */ |
538 | pci_read_config_byte(pdev, addr2, &fast); | |
539 | fast &= ~0x07; | |
540 | pci_write_config_byte(pdev, addr2, fast); | |
85cd7251 | 541 | |
669a5db4 JG |
542 | pci_read_config_dword(pdev, addr1, ®); |
543 | mode = hpt37x_find_mode(ap, adev->dma_mode); | |
544 | printk("Find mode for DMA %d reports %X\n", adev->dma_mode, mode); | |
545 | mode &= ~0xC0000000; /* Leave config bits alone */ | |
546 | mode |= 0x80000000; /* FIFO in MWDMA or UDMA */ | |
547 | reg &= 0xC0000000; /* Strip timing bits */ | |
548 | pci_write_config_dword(pdev, addr1, reg | mode); | |
549 | } | |
550 | ||
551 | /** | |
552 | * hpt37x_bmdma_end - DMA engine stop | |
553 | * @qc: ATA command | |
554 | * | |
555 | * Clean up after the HPT372 and later DMA engine | |
556 | */ | |
85cd7251 | 557 | |
669a5db4 JG |
558 | static void hpt37x_bmdma_stop(struct ata_queued_cmd *qc) |
559 | { | |
560 | struct ata_port *ap = qc->ap; | |
561 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
6929da44 | 562 | int mscreg = 0x50 + 4 * ap->port_no; |
669a5db4 | 563 | u8 bwsr_stat, msc_stat; |
85cd7251 | 564 | |
669a5db4 JG |
565 | pci_read_config_byte(pdev, 0x6A, &bwsr_stat); |
566 | pci_read_config_byte(pdev, mscreg, &msc_stat); | |
567 | if (bwsr_stat & (1 << ap->port_no)) | |
568 | pci_write_config_byte(pdev, mscreg, msc_stat | 0x30); | |
569 | ata_bmdma_stop(qc); | |
570 | } | |
571 | ||
572 | ||
573 | static struct scsi_host_template hpt37x_sht = { | |
68d1d07b | 574 | ATA_BMDMA_SHT(DRV_NAME), |
669a5db4 JG |
575 | }; |
576 | ||
577 | /* | |
578 | * Configuration for HPT370 | |
579 | */ | |
85cd7251 | 580 | |
669a5db4 | 581 | static struct ata_port_operations hpt370_port_ops = { |
029cfd6b | 582 | .inherits = &ata_bmdma_port_ops, |
669a5db4 | 583 | |
669a5db4 | 584 | .bmdma_stop = hpt370_bmdma_stop, |
669a5db4 | 585 | |
029cfd6b TH |
586 | .mode_filter = hpt370_filter, |
587 | .set_piomode = hpt370_set_piomode, | |
588 | .set_dmamode = hpt370_set_dmamode, | |
a1efdaba | 589 | .prereset = hpt37x_pre_reset, |
85cd7251 | 590 | }; |
669a5db4 JG |
591 | |
592 | /* | |
593 | * Configuration for HPT370A. Close to 370 but less filters | |
594 | */ | |
85cd7251 | 595 | |
669a5db4 | 596 | static struct ata_port_operations hpt370a_port_ops = { |
029cfd6b | 597 | .inherits = &hpt370_port_ops, |
669a5db4 | 598 | .mode_filter = hpt370a_filter, |
85cd7251 | 599 | }; |
669a5db4 JG |
600 | |
601 | /* | |
602 | * Configuration for HPT372, HPT371, HPT302. Slightly different PIO | |
603 | * and DMA mode setting functionality. | |
604 | */ | |
85cd7251 | 605 | |
669a5db4 | 606 | static struct ata_port_operations hpt372_port_ops = { |
029cfd6b | 607 | .inherits = &ata_bmdma_port_ops, |
669a5db4 | 608 | |
669a5db4 | 609 | .bmdma_stop = hpt37x_bmdma_stop, |
669a5db4 | 610 | |
029cfd6b TH |
611 | .set_piomode = hpt372_set_piomode, |
612 | .set_dmamode = hpt372_set_dmamode, | |
a1efdaba | 613 | .prereset = hpt37x_pre_reset, |
85cd7251 | 614 | }; |
669a5db4 JG |
615 | |
616 | /* | |
617 | * Configuration for HPT374. Mode setting works like 372 and friends | |
a1efdaba | 618 | * but we have a different cable detection procedure for function 1. |
669a5db4 | 619 | */ |
85cd7251 | 620 | |
a1efdaba | 621 | static struct ata_port_operations hpt374_fn1_port_ops = { |
029cfd6b | 622 | .inherits = &hpt372_port_ops, |
a1efdaba | 623 | .prereset = hpt374_fn1_pre_reset, |
85cd7251 | 624 | }; |
669a5db4 JG |
625 | |
626 | /** | |
627 | * htp37x_clock_slot - Turn timing to PC clock entry | |
628 | * @freq: Reported frequency timing | |
629 | * @base: Base timing | |
630 | * | |
631 | * Turn the timing data intoa clock slot (0 for 33, 1 for 40, 2 for 50 | |
632 | * and 3 for 66Mhz) | |
633 | */ | |
85cd7251 | 634 | |
669a5db4 JG |
635 | static int hpt37x_clock_slot(unsigned int freq, unsigned int base) |
636 | { | |
637 | unsigned int f = (base * freq) / 192; /* Mhz */ | |
638 | if (f < 40) | |
639 | return 0; /* 33Mhz slot */ | |
640 | if (f < 45) | |
641 | return 1; /* 40Mhz slot */ | |
642 | if (f < 55) | |
643 | return 2; /* 50Mhz slot */ | |
644 | return 3; /* 60Mhz slot */ | |
645 | } | |
646 | ||
647 | /** | |
648 | * hpt37x_calibrate_dpll - Calibrate the DPLL loop | |
85cd7251 | 649 | * @dev: PCI device |
669a5db4 JG |
650 | * |
651 | * Perform a calibration cycle on the HPT37x DPLL. Returns 1 if this | |
652 | * succeeds | |
653 | */ | |
654 | ||
655 | static int hpt37x_calibrate_dpll(struct pci_dev *dev) | |
656 | { | |
657 | u8 reg5b; | |
658 | u32 reg5c; | |
659 | int tries; | |
85cd7251 | 660 | |
669a5db4 JG |
661 | for(tries = 0; tries < 0x5000; tries++) { |
662 | udelay(50); | |
663 | pci_read_config_byte(dev, 0x5b, ®5b); | |
664 | if (reg5b & 0x80) { | |
665 | /* See if it stays set */ | |
666 | for(tries = 0; tries < 0x1000; tries ++) { | |
667 | pci_read_config_byte(dev, 0x5b, ®5b); | |
668 | /* Failed ? */ | |
669 | if ((reg5b & 0x80) == 0) | |
670 | return 0; | |
671 | } | |
672 | /* Turn off tuning, we have the DPLL set */ | |
673 | pci_read_config_dword(dev, 0x5c, ®5c); | |
674 | pci_write_config_dword(dev, 0x5c, reg5c & ~ 0x100); | |
675 | return 1; | |
676 | } | |
677 | } | |
678 | /* Never went stable */ | |
679 | return 0; | |
680 | } | |
73946f9f AC |
681 | |
682 | static u32 hpt374_read_freq(struct pci_dev *pdev) | |
683 | { | |
684 | u32 freq; | |
685 | unsigned long io_base = pci_resource_start(pdev, 4); | |
686 | if (PCI_FUNC(pdev->devfn) & 1) { | |
40f46f17 AM |
687 | struct pci_dev *pdev_0; |
688 | ||
689 | pdev_0 = pci_get_slot(pdev->bus, pdev->devfn - 1); | |
73946f9f AC |
690 | /* Someone hot plugged the controller on us ? */ |
691 | if (pdev_0 == NULL) | |
692 | return 0; | |
693 | io_base = pci_resource_start(pdev_0, 4); | |
694 | freq = inl(io_base + 0x90); | |
695 | pci_dev_put(pdev_0); | |
40f46f17 | 696 | } else |
73946f9f AC |
697 | freq = inl(io_base + 0x90); |
698 | return freq; | |
699 | } | |
700 | ||
669a5db4 JG |
701 | /** |
702 | * hpt37x_init_one - Initialise an HPT37X/302 | |
703 | * @dev: PCI device | |
704 | * @id: Entry in match table | |
705 | * | |
706 | * Initialise an HPT37x device. There are some interesting complications | |
707 | * here. Firstly the chip may report 366 and be one of several variants. | |
708 | * Secondly all the timings depend on the clock for the chip which we must | |
709 | * detect and look up | |
710 | * | |
711 | * This is the known chip mappings. It may be missing a couple of later | |
712 | * releases. | |
713 | * | |
714 | * Chip version PCI Rev Notes | |
715 | * HPT366 4 (HPT366) 0 Other driver | |
716 | * HPT366 4 (HPT366) 1 Other driver | |
717 | * HPT368 4 (HPT366) 2 Other driver | |
718 | * HPT370 4 (HPT366) 3 UDMA100 | |
719 | * HPT370A 4 (HPT366) 4 UDMA100 | |
720 | * HPT372 4 (HPT366) 5 UDMA133 (1) | |
721 | * HPT372N 4 (HPT366) 6 Other driver | |
722 | * HPT372A 5 (HPT372) 1 UDMA133 (1) | |
723 | * HPT372N 5 (HPT372) 2 Other driver | |
724 | * HPT302 6 (HPT302) 1 UDMA133 | |
725 | * HPT302N 6 (HPT302) 2 Other driver | |
726 | * HPT371 7 (HPT371) * UDMA133 | |
727 | * HPT374 8 (HPT374) * UDMA133 4 channel | |
728 | * HPT372N 9 (HPT372N) * Other driver | |
729 | * | |
730 | * (1) UDMA133 support depends on the bus clock | |
731 | */ | |
85cd7251 | 732 | |
669a5db4 JG |
733 | static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
734 | { | |
735 | /* HPT370 - UDMA100 */ | |
1626aeb8 | 736 | static const struct ata_port_info info_hpt370 = { |
1d2808fd | 737 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
738 | .pio_mask = ATA_PIO4, |
739 | .mwdma_mask = ATA_MWDMA2, | |
bf6263a8 | 740 | .udma_mask = ATA_UDMA5, |
669a5db4 JG |
741 | .port_ops = &hpt370_port_ops |
742 | }; | |
743 | /* HPT370A - UDMA100 */ | |
1626aeb8 | 744 | static const struct ata_port_info info_hpt370a = { |
1d2808fd | 745 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
746 | .pio_mask = ATA_PIO4, |
747 | .mwdma_mask = ATA_MWDMA2, | |
bf6263a8 | 748 | .udma_mask = ATA_UDMA5, |
669a5db4 JG |
749 | .port_ops = &hpt370a_port_ops |
750 | }; | |
fcc2f69a | 751 | /* HPT370 - UDMA100 */ |
1626aeb8 | 752 | static const struct ata_port_info info_hpt370_33 = { |
1d2808fd | 753 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
754 | .pio_mask = ATA_PIO4, |
755 | .mwdma_mask = ATA_MWDMA2, | |
73946f9f | 756 | .udma_mask = ATA_UDMA5, |
fcc2f69a AC |
757 | .port_ops = &hpt370_port_ops |
758 | }; | |
759 | /* HPT370A - UDMA100 */ | |
1626aeb8 | 760 | static const struct ata_port_info info_hpt370a_33 = { |
1d2808fd | 761 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
762 | .pio_mask = ATA_PIO4, |
763 | .mwdma_mask = ATA_MWDMA2, | |
73946f9f | 764 | .udma_mask = ATA_UDMA5, |
fcc2f69a AC |
765 | .port_ops = &hpt370a_port_ops |
766 | }; | |
669a5db4 | 767 | /* HPT371, 372 and friends - UDMA133 */ |
1626aeb8 | 768 | static const struct ata_port_info info_hpt372 = { |
1d2808fd | 769 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
770 | .pio_mask = ATA_PIO4, |
771 | .mwdma_mask = ATA_MWDMA2, | |
bf6263a8 | 772 | .udma_mask = ATA_UDMA6, |
669a5db4 JG |
773 | .port_ops = &hpt372_port_ops |
774 | }; | |
a1efdaba TH |
775 | /* HPT374 - UDMA100, function 1 uses different prereset method */ |
776 | static const struct ata_port_info info_hpt374_fn0 = { | |
777 | .flags = ATA_FLAG_SLAVE_POSS, | |
14bdef98 EIB |
778 | .pio_mask = ATA_PIO4, |
779 | .mwdma_mask = ATA_MWDMA2, | |
a1efdaba TH |
780 | .udma_mask = ATA_UDMA5, |
781 | .port_ops = &hpt372_port_ops | |
782 | }; | |
783 | static const struct ata_port_info info_hpt374_fn1 = { | |
1d2808fd | 784 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
785 | .pio_mask = ATA_PIO4, |
786 | .mwdma_mask = ATA_MWDMA2, | |
bf6263a8 | 787 | .udma_mask = ATA_UDMA5, |
a1efdaba | 788 | .port_ops = &hpt374_fn1_port_ops |
669a5db4 JG |
789 | }; |
790 | ||
791 | static const int MHz[4] = { 33, 40, 50, 66 }; | |
1626aeb8 | 792 | void *private_data = NULL; |
887125e3 | 793 | const struct ata_port_info *ppi[] = { NULL, NULL }; |
669a5db4 JG |
794 | |
795 | u8 irqmask; | |
796 | u32 class_rev; | |
fcc2f69a | 797 | u8 mcr1; |
669a5db4 | 798 | u32 freq; |
fcc2f69a | 799 | int prefer_dpll = 1; |
a617c09f | 800 | |
fcc2f69a | 801 | unsigned long iobase = pci_resource_start(dev, 4); |
669a5db4 JG |
802 | |
803 | const struct hpt_chip *chip_table; | |
804 | int clock_slot; | |
f08048e9 TH |
805 | int rc; |
806 | ||
807 | rc = pcim_enable_device(dev); | |
808 | if (rc) | |
809 | return rc; | |
669a5db4 JG |
810 | |
811 | pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev); | |
812 | class_rev &= 0xFF; | |
85cd7251 | 813 | |
669a5db4 JG |
814 | if (dev->device == PCI_DEVICE_ID_TTI_HPT366) { |
815 | /* May be a later chip in disguise. Check */ | |
816 | /* Older chips are in the HPT366 driver. Ignore them */ | |
817 | if (class_rev < 3) | |
818 | return -ENODEV; | |
819 | /* N series chips have their own driver. Ignore */ | |
820 | if (class_rev == 6) | |
821 | return -ENODEV; | |
822 | ||
85cd7251 | 823 | switch(class_rev) { |
669a5db4 | 824 | case 3: |
887125e3 | 825 | ppi[0] = &info_hpt370; |
669a5db4 | 826 | chip_table = &hpt370; |
fcc2f69a | 827 | prefer_dpll = 0; |
669a5db4 JG |
828 | break; |
829 | case 4: | |
887125e3 | 830 | ppi[0] = &info_hpt370a; |
669a5db4 | 831 | chip_table = &hpt370a; |
fcc2f69a | 832 | prefer_dpll = 0; |
669a5db4 JG |
833 | break; |
834 | case 5: | |
887125e3 | 835 | ppi[0] = &info_hpt372; |
669a5db4 JG |
836 | chip_table = &hpt372; |
837 | break; | |
838 | default: | |
839 | printk(KERN_ERR "pata_hpt37x: Unknown HPT366 subtype please report (%d).\n", class_rev); | |
840 | return -ENODEV; | |
841 | } | |
842 | } else { | |
843 | switch(dev->device) { | |
844 | case PCI_DEVICE_ID_TTI_HPT372: | |
845 | /* 372N if rev >= 2*/ | |
846 | if (class_rev >= 2) | |
847 | return -ENODEV; | |
887125e3 | 848 | ppi[0] = &info_hpt372; |
669a5db4 JG |
849 | chip_table = &hpt372a; |
850 | break; | |
851 | case PCI_DEVICE_ID_TTI_HPT302: | |
852 | /* 302N if rev > 1 */ | |
853 | if (class_rev > 1) | |
854 | return -ENODEV; | |
887125e3 | 855 | ppi[0] = &info_hpt372; |
669a5db4 JG |
856 | /* Check this */ |
857 | chip_table = &hpt302; | |
858 | break; | |
859 | case PCI_DEVICE_ID_TTI_HPT371: | |
fcc2f69a AC |
860 | if (class_rev > 1) |
861 | return -ENODEV; | |
887125e3 | 862 | ppi[0] = &info_hpt372; |
669a5db4 | 863 | chip_table = &hpt371; |
a4734468 AC |
864 | /* Single channel device, master is not present |
865 | but the BIOS (or us for non x86) must mark it | |
fcc2f69a AC |
866 | absent */ |
867 | pci_read_config_byte(dev, 0x50, &mcr1); | |
868 | mcr1 &= ~0x04; | |
869 | pci_write_config_byte(dev, 0x50, mcr1); | |
669a5db4 JG |
870 | break; |
871 | case PCI_DEVICE_ID_TTI_HPT374: | |
872 | chip_table = &hpt374; | |
a1efdaba TH |
873 | if (!(PCI_FUNC(dev->devfn) & 1)) |
874 | *ppi = &info_hpt374_fn0; | |
875 | else | |
876 | *ppi = &info_hpt374_fn1; | |
669a5db4 JG |
877 | break; |
878 | default: | |
879 | printk(KERN_ERR "pata_hpt37x: PCI table is bogus please report (%d).\n", dev->device); | |
880 | return -ENODEV; | |
881 | } | |
882 | } | |
883 | /* Ok so this is a chip we support */ | |
884 | ||
885 | pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4)); | |
886 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78); | |
887 | pci_write_config_byte(dev, PCI_MIN_GNT, 0x08); | |
888 | pci_write_config_byte(dev, PCI_MAX_LAT, 0x08); | |
889 | ||
890 | pci_read_config_byte(dev, 0x5A, &irqmask); | |
891 | irqmask &= ~0x10; | |
892 | pci_write_config_byte(dev, 0x5a, irqmask); | |
893 | ||
894 | /* | |
895 | * default to pci clock. make sure MA15/16 are set to output | |
896 | * to prevent drives having problems with 40-pin cables. Needed | |
897 | * for some drives such as IBM-DTLA which will not enter ready | |
898 | * state on reset when PDIAG is a input. | |
899 | */ | |
900 | ||
85cd7251 | 901 | pci_write_config_byte(dev, 0x5b, 0x23); |
a617c09f | 902 | |
fcc2f69a AC |
903 | /* |
904 | * HighPoint does this for HPT372A. | |
905 | * NOTE: This register is only writeable via I/O space. | |
906 | */ | |
907 | if (chip_table == &hpt372a) | |
908 | outb(0x0e, iobase + 0x9c); | |
85cd7251 | 909 | |
fcc2f69a | 910 | /* Some devices do not let this value be accessed via PCI space |
73946f9f AC |
911 | according to the old driver. In addition we must use the value |
912 | from FN 0 on the HPT374 */ | |
913 | ||
914 | if (chip_table == &hpt374) { | |
915 | freq = hpt374_read_freq(dev); | |
916 | if (freq == 0) | |
917 | return -ENODEV; | |
918 | } else | |
919 | freq = inl(iobase + 0x90); | |
fcc2f69a | 920 | |
669a5db4 JG |
921 | if ((freq >> 12) != 0xABCDE) { |
922 | int i; | |
923 | u8 sr; | |
924 | u32 total = 0; | |
85cd7251 | 925 | |
669a5db4 | 926 | printk(KERN_WARNING "pata_hpt37x: BIOS has not set timing clocks.\n"); |
85cd7251 | 927 | |
669a5db4 JG |
928 | /* This is the process the HPT371 BIOS is reported to use */ |
929 | for(i = 0; i < 128; i++) { | |
930 | pci_read_config_byte(dev, 0x78, &sr); | |
fcc2f69a | 931 | total += sr & 0x1FF; |
669a5db4 JG |
932 | udelay(15); |
933 | } | |
934 | freq = total / 128; | |
935 | } | |
936 | freq &= 0x1FF; | |
85cd7251 | 937 | |
669a5db4 JG |
938 | /* |
939 | * Turn the frequency check into a band and then find a timing | |
940 | * table to match it. | |
941 | */ | |
a617c09f | 942 | |
669a5db4 | 943 | clock_slot = hpt37x_clock_slot(freq, chip_table->base); |
fcc2f69a | 944 | if (chip_table->clocks[clock_slot] == NULL || prefer_dpll) { |
669a5db4 JG |
945 | /* |
946 | * We need to try PLL mode instead | |
fcc2f69a AC |
947 | * |
948 | * For non UDMA133 capable devices we should | |
949 | * use a 50MHz DPLL by choice | |
669a5db4 | 950 | */ |
fcc2f69a | 951 | unsigned int f_low, f_high; |
960c8a10 | 952 | int dpll, adjust; |
a617c09f | 953 | |
960c8a10 | 954 | /* Compute DPLL */ |
887125e3 | 955 | dpll = (ppi[0]->udma_mask & 0xC0) ? 3 : 2; |
a617c09f | 956 | |
960c8a10 | 957 | f_low = (MHz[clock_slot] * 48) / MHz[dpll]; |
fcc2f69a | 958 | f_high = f_low + 2; |
960c8a10 AC |
959 | if (clock_slot > 1) |
960 | f_high += 2; | |
fcc2f69a AC |
961 | |
962 | /* Select the DPLL clock. */ | |
963 | pci_write_config_byte(dev, 0x5b, 0x21); | |
64a81709 | 964 | pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low | 0x100); |
85cd7251 | 965 | |
669a5db4 JG |
966 | for(adjust = 0; adjust < 8; adjust++) { |
967 | if (hpt37x_calibrate_dpll(dev)) | |
968 | break; | |
969 | /* See if it'll settle at a fractionally different clock */ | |
64a81709 AC |
970 | if (adjust & 1) |
971 | f_low -= adjust >> 1; | |
972 | else | |
973 | f_high += adjust >> 1; | |
974 | pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low | 0x100); | |
669a5db4 JG |
975 | } |
976 | if (adjust == 8) { | |
80b8987c | 977 | printk(KERN_ERR "pata_hpt37x: DPLL did not stabilize!\n"); |
669a5db4 JG |
978 | return -ENODEV; |
979 | } | |
960c8a10 | 980 | if (dpll == 3) |
1626aeb8 | 981 | private_data = (void *)hpt37x_timings_66; |
fcc2f69a | 982 | else |
1626aeb8 | 983 | private_data = (void *)hpt37x_timings_50; |
85cd7251 | 984 | |
80b8987c SS |
985 | printk(KERN_INFO "pata_hpt37x: bus clock %dMHz, using %dMHz DPLL.\n", |
986 | MHz[clock_slot], MHz[dpll]); | |
669a5db4 | 987 | } else { |
1626aeb8 | 988 | private_data = (void *)chip_table->clocks[clock_slot]; |
669a5db4 | 989 | /* |
a4734468 AC |
990 | * Perform a final fixup. Note that we will have used the |
991 | * DPLL on the HPT372 which means we don't have to worry | |
992 | * about lack of UDMA133 support on lower clocks | |
993 | */ | |
85cd7251 | 994 | |
887125e3 TH |
995 | if (clock_slot < 2 && ppi[0] == &info_hpt370) |
996 | ppi[0] = &info_hpt370_33; | |
997 | if (clock_slot < 2 && ppi[0] == &info_hpt370a) | |
998 | ppi[0] = &info_hpt370a_33; | |
80b8987c SS |
999 | printk(KERN_INFO "pata_hpt37x: %s using %dMHz bus clock.\n", |
1000 | chip_table->name, MHz[clock_slot]); | |
669a5db4 | 1001 | } |
fcc2f69a | 1002 | |
669a5db4 | 1003 | /* Now kick off ATA set up */ |
9363c382 | 1004 | return ata_pci_sff_init_one(dev, ppi, &hpt37x_sht, private_data); |
669a5db4 JG |
1005 | } |
1006 | ||
2d2744fc JG |
1007 | static const struct pci_device_id hpt37x[] = { |
1008 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), }, | |
1009 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT371), }, | |
1010 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT372), }, | |
1011 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT374), }, | |
1012 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT302), }, | |
1013 | ||
1014 | { }, | |
669a5db4 JG |
1015 | }; |
1016 | ||
1017 | static struct pci_driver hpt37x_pci_driver = { | |
2d2744fc | 1018 | .name = DRV_NAME, |
669a5db4 JG |
1019 | .id_table = hpt37x, |
1020 | .probe = hpt37x_init_one, | |
1021 | .remove = ata_pci_remove_one | |
1022 | }; | |
1023 | ||
1024 | static int __init hpt37x_init(void) | |
1025 | { | |
1026 | return pci_register_driver(&hpt37x_pci_driver); | |
1027 | } | |
1028 | ||
669a5db4 JG |
1029 | static void __exit hpt37x_exit(void) |
1030 | { | |
1031 | pci_unregister_driver(&hpt37x_pci_driver); | |
1032 | } | |
1033 | ||
669a5db4 JG |
1034 | MODULE_AUTHOR("Alan Cox"); |
1035 | MODULE_DESCRIPTION("low-level driver for the Highpoint HPT37x/30x"); | |
1036 | MODULE_LICENSE("GPL"); | |
1037 | MODULE_DEVICE_TABLE(pci, hpt37x); | |
1038 | MODULE_VERSION(DRV_VERSION); | |
1039 | ||
1040 | module_init(hpt37x_init); | |
1041 | module_exit(hpt37x_exit); |