Commit | Line | Data |
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669a5db4 JG |
1 | /* |
2 | * Libata driver for the highpoint 366 and 368 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 | |
11 | * | |
12 | * | |
13 | * TODO | |
d817898c | 14 | * Look into engine reset on timeout errors. Should not be required. |
669a5db4 JG |
15 | */ |
16 | ||
8d7b1c70 | 17 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
669a5db4 JG |
18 | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/pci.h> | |
669a5db4 JG |
22 | #include <linux/blkdev.h> |
23 | #include <linux/delay.h> | |
24 | #include <scsi/scsi_host.h> | |
25 | #include <linux/libata.h> | |
26 | ||
27 | #define DRV_NAME "pata_hpt366" | |
8d7b1c70 | 28 | #define DRV_VERSION "0.6.11" |
669a5db4 JG |
29 | |
30 | struct hpt_clock { | |
6ecb6f25 | 31 | u8 xfer_mode; |
669a5db4 JG |
32 | u32 timing; |
33 | }; | |
34 | ||
35 | /* key for bus clock timings | |
36 | * bit | |
82beb5d8 SS |
37 | * 0:3 data_high_time. Inactive time of DIOW_/DIOR_ for PIO and MW DMA. |
38 | * cycles = value + 1 | |
39 | * 4:7 data_low_time. Active time of DIOW_/DIOR_ for PIO and MW DMA. | |
40 | * cycles = value + 1 | |
41 | * 8:11 cmd_high_time. Inactive time of DIOW_/DIOR_ during task file | |
669a5db4 | 42 | * register access. |
82beb5d8 | 43 | * 12:15 cmd_low_time. Active time of DIOW_/DIOR_ during task file |
669a5db4 | 44 | * register access. |
82beb5d8 SS |
45 | * 16:18 udma_cycle_time. Clock cycles for UDMA xfer? |
46 | * 19:21 pre_high_time. Time to initialize 1st cycle for PIO and MW DMA xfer. | |
47 | * 22:24 cmd_pre_high_time. Time to initialize 1st PIO cycle for task file | |
669a5db4 | 48 | * register access. |
82beb5d8 SS |
49 | * 28 UDMA enable. |
50 | * 29 DMA enable. | |
51 | * 30 PIO_MST enable. If set, the chip is in bus master mode during | |
52 | * PIO xfer. | |
669a5db4 JG |
53 | * 31 FIFO enable. |
54 | */ | |
55 | ||
56 | static const struct hpt_clock hpt366_40[] = { | |
57 | { XFER_UDMA_4, 0x900fd943 }, | |
58 | { XFER_UDMA_3, 0x900ad943 }, | |
59 | { XFER_UDMA_2, 0x900bd943 }, | |
60 | { XFER_UDMA_1, 0x9008d943 }, | |
61 | { XFER_UDMA_0, 0x9008d943 }, | |
62 | ||
63 | { XFER_MW_DMA_2, 0xa008d943 }, | |
64 | { XFER_MW_DMA_1, 0xa010d955 }, | |
65 | { XFER_MW_DMA_0, 0xa010d9fc }, | |
66 | ||
67 | { XFER_PIO_4, 0xc008d963 }, | |
68 | { XFER_PIO_3, 0xc010d974 }, | |
69 | { XFER_PIO_2, 0xc010d997 }, | |
70 | { XFER_PIO_1, 0xc010d9c7 }, | |
71 | { XFER_PIO_0, 0xc018d9d9 }, | |
72 | { 0, 0x0120d9d9 } | |
73 | }; | |
74 | ||
75 | static const struct hpt_clock hpt366_33[] = { | |
76 | { XFER_UDMA_4, 0x90c9a731 }, | |
77 | { XFER_UDMA_3, 0x90cfa731 }, | |
78 | { XFER_UDMA_2, 0x90caa731 }, | |
79 | { XFER_UDMA_1, 0x90cba731 }, | |
80 | { XFER_UDMA_0, 0x90c8a731 }, | |
81 | ||
82 | { XFER_MW_DMA_2, 0xa0c8a731 }, | |
83 | { XFER_MW_DMA_1, 0xa0c8a732 }, /* 0xa0c8a733 */ | |
84 | { XFER_MW_DMA_0, 0xa0c8a797 }, | |
85 | ||
86 | { XFER_PIO_4, 0xc0c8a731 }, | |
87 | { XFER_PIO_3, 0xc0c8a742 }, | |
88 | { XFER_PIO_2, 0xc0d0a753 }, | |
89 | { XFER_PIO_1, 0xc0d0a7a3 }, /* 0xc0d0a793 */ | |
90 | { XFER_PIO_0, 0xc0d0a7aa }, /* 0xc0d0a7a7 */ | |
91 | { 0, 0x0120a7a7 } | |
92 | }; | |
93 | ||
94 | static const struct hpt_clock hpt366_25[] = { | |
95 | { XFER_UDMA_4, 0x90c98521 }, | |
96 | { XFER_UDMA_3, 0x90cf8521 }, | |
97 | { XFER_UDMA_2, 0x90cf8521 }, | |
98 | { XFER_UDMA_1, 0x90cb8521 }, | |
99 | { XFER_UDMA_0, 0x90cb8521 }, | |
100 | ||
101 | { XFER_MW_DMA_2, 0xa0ca8521 }, | |
102 | { XFER_MW_DMA_1, 0xa0ca8532 }, | |
103 | { XFER_MW_DMA_0, 0xa0ca8575 }, | |
104 | ||
105 | { XFER_PIO_4, 0xc0ca8521 }, | |
106 | { XFER_PIO_3, 0xc0ca8532 }, | |
107 | { XFER_PIO_2, 0xc0ca8542 }, | |
108 | { XFER_PIO_1, 0xc0d08572 }, | |
109 | { XFER_PIO_0, 0xc0d08585 }, | |
110 | { 0, 0x01208585 } | |
111 | }; | |
112 | ||
dc5e44ec BZ |
113 | /** |
114 | * hpt36x_find_mode - find the hpt36x timing | |
115 | * @ap: ATA port | |
116 | * @speed: transfer mode | |
117 | * | |
118 | * Return the 32bit register programming information for this channel | |
119 | * that matches the speed provided. | |
120 | */ | |
121 | ||
122 | static u32 hpt36x_find_mode(struct ata_port *ap, int speed) | |
123 | { | |
124 | struct hpt_clock *clocks = ap->host->private_data; | |
125 | ||
126 | while (clocks->xfer_mode) { | |
127 | if (clocks->xfer_mode == speed) | |
128 | return clocks->timing; | |
129 | clocks++; | |
130 | } | |
131 | BUG(); | |
132 | return 0xffffffffU; /* silence compiler warning */ | |
133 | } | |
134 | ||
28cd4b6b SS |
135 | static const char * const bad_ata33[] = { |
136 | "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", | |
137 | "Maxtor 90845U3", "Maxtor 90650U2", | |
138 | "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", | |
139 | "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2", | |
140 | "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", | |
141 | "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4", | |
669a5db4 JG |
142 | "Maxtor 90510D4", |
143 | "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2", | |
28cd4b6b SS |
144 | "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", |
145 | "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4", | |
146 | "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", | |
147 | "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2", | |
669a5db4 JG |
148 | NULL |
149 | }; | |
150 | ||
28cd4b6b | 151 | static const char * const bad_ata66_4[] = { |
669a5db4 JG |
152 | "IBM-DTLA-307075", |
153 | "IBM-DTLA-307060", | |
154 | "IBM-DTLA-307045", | |
155 | "IBM-DTLA-307030", | |
156 | "IBM-DTLA-307020", | |
157 | "IBM-DTLA-307015", | |
158 | "IBM-DTLA-305040", | |
159 | "IBM-DTLA-305030", | |
160 | "IBM-DTLA-305020", | |
161 | "IC35L010AVER07-0", | |
162 | "IC35L020AVER07-0", | |
163 | "IC35L030AVER07-0", | |
164 | "IC35L040AVER07-0", | |
165 | "IC35L060AVER07-0", | |
166 | "WDC AC310200R", | |
167 | NULL | |
168 | }; | |
169 | ||
28cd4b6b | 170 | static const char * const bad_ata66_3[] = { |
669a5db4 JG |
171 | "WDC AC310200R", |
172 | NULL | |
173 | }; | |
174 | ||
28cd4b6b SS |
175 | static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, |
176 | const char * const list[]) | |
669a5db4 | 177 | { |
8bfa79fc | 178 | unsigned char model_num[ATA_ID_PROD_LEN + 1]; |
669a5db4 JG |
179 | int i = 0; |
180 | ||
8bfa79fc | 181 | ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num)); |
669a5db4 | 182 | |
8bfa79fc TH |
183 | while (list[i] != NULL) { |
184 | if (!strcmp(list[i], model_num)) { | |
8d7b1c70 JP |
185 | pr_warn("%s is not supported for %s\n", |
186 | modestr, list[i]); | |
669a5db4 JG |
187 | return 1; |
188 | } | |
189 | i++; | |
190 | } | |
191 | return 0; | |
192 | } | |
193 | ||
194 | /** | |
195 | * hpt366_filter - mode selection filter | |
669a5db4 JG |
196 | * @adev: ATA device |
197 | * | |
198 | * Block UDMA on devices that cause trouble with this controller. | |
199 | */ | |
85cd7251 | 200 | |
a76b62ca | 201 | static unsigned long hpt366_filter(struct ata_device *adev, unsigned long mask) |
669a5db4 JG |
202 | { |
203 | if (adev->class == ATA_DEV_ATA) { | |
204 | if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33)) | |
205 | mask &= ~ATA_MASK_UDMA; | |
206 | if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3)) | |
6ddd6861 | 207 | mask &= ~(0xF8 << ATA_SHIFT_UDMA); |
669a5db4 | 208 | if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4)) |
6ddd6861 | 209 | mask &= ~(0xF0 << ATA_SHIFT_UDMA); |
3ee89f17 TH |
210 | } else if (adev->class == ATA_DEV_ATAPI) |
211 | mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); | |
212 | ||
c7087652 | 213 | return mask; |
669a5db4 JG |
214 | } |
215 | ||
fecfda5d AC |
216 | static int hpt36x_cable_detect(struct ata_port *ap) |
217 | { | |
fecfda5d | 218 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
bab5b32a | 219 | u8 ata66; |
fecfda5d | 220 | |
bab5b32a TH |
221 | /* |
222 | * Each channel of pata_hpt366 occupies separate PCI function | |
223 | * as the primary channel and bit1 indicates the cable type. | |
224 | */ | |
fecfda5d | 225 | pci_read_config_byte(pdev, 0x5A, &ata66); |
bab5b32a | 226 | if (ata66 & 2) |
fecfda5d AC |
227 | return ATA_CBL_PATA40; |
228 | return ATA_CBL_PATA80; | |
229 | } | |
230 | ||
6ecb6f25 TH |
231 | static void hpt366_set_mode(struct ata_port *ap, struct ata_device *adev, |
232 | u8 mode) | |
669a5db4 JG |
233 | { |
234 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
859faa87 | 235 | u32 addr = 0x40 + 4 * adev->devno; |
dc5e44ec | 236 | u32 mask, reg, t; |
85cd7251 | 237 | |
6ecb6f25 TH |
238 | /* determine timing mask and find matching clock entry */ |
239 | if (mode < XFER_MW_DMA_0) | |
240 | mask = 0xc1f8ffff; | |
241 | else if (mode < XFER_UDMA_0) | |
242 | mask = 0x303800ff; | |
243 | else | |
244 | mask = 0x30070000; | |
245 | ||
dc5e44ec | 246 | t = hpt36x_find_mode(ap, mode); |
6ecb6f25 TH |
247 | |
248 | /* | |
249 | * Combine new mode bits with old config bits and disable | |
250 | * on-chip PIO FIFO/buffer (and PIO MST mode as well) to avoid | |
251 | * problems handling I/O errors later. | |
252 | */ | |
859faa87 | 253 | pci_read_config_dword(pdev, addr, ®); |
dc5e44ec | 254 | reg = ((reg & ~mask) | (t & mask)) & ~0xc0000000; |
859faa87 | 255 | pci_write_config_dword(pdev, addr, reg); |
6ecb6f25 TH |
256 | } |
257 | ||
258 | /** | |
259 | * hpt366_set_piomode - PIO setup | |
260 | * @ap: ATA interface | |
261 | * @adev: device on the interface | |
262 | * | |
263 | * Perform PIO mode setup. | |
264 | */ | |
265 | ||
266 | static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev) | |
267 | { | |
268 | hpt366_set_mode(ap, adev, adev->pio_mode); | |
669a5db4 JG |
269 | } |
270 | ||
271 | /** | |
272 | * hpt366_set_dmamode - DMA timing setup | |
273 | * @ap: ATA interface | |
274 | * @adev: Device being configured | |
275 | * | |
276 | * Set up the channel for MWDMA or UDMA modes. Much the same as with | |
277 | * PIO, load the mode number and then set MWDMA or UDMA flag. | |
278 | */ | |
85cd7251 | 279 | |
669a5db4 JG |
280 | static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev) |
281 | { | |
6ecb6f25 | 282 | hpt366_set_mode(ap, adev, adev->dma_mode); |
669a5db4 JG |
283 | } |
284 | ||
285 | static struct scsi_host_template hpt36x_sht = { | |
68d1d07b | 286 | ATA_BMDMA_SHT(DRV_NAME), |
669a5db4 JG |
287 | }; |
288 | ||
289 | /* | |
290 | * Configuration for HPT366/68 | |
291 | */ | |
85cd7251 | 292 | |
669a5db4 | 293 | static struct ata_port_operations hpt366_port_ops = { |
029cfd6b TH |
294 | .inherits = &ata_bmdma_port_ops, |
295 | .cable_detect = hpt36x_cable_detect, | |
296 | .mode_filter = hpt366_filter, | |
669a5db4 JG |
297 | .set_piomode = hpt366_set_piomode, |
298 | .set_dmamode = hpt366_set_dmamode, | |
85cd7251 | 299 | }; |
669a5db4 | 300 | |
aa54ab1e A |
301 | /** |
302 | * hpt36x_init_chipset - common chip setup | |
303 | * @dev: PCI device | |
304 | * | |
305 | * Perform the chip setup work that must be done at both init and | |
306 | * resume time | |
307 | */ | |
308 | ||
309 | static void hpt36x_init_chipset(struct pci_dev *dev) | |
310 | { | |
311 | u8 drive_fast; | |
28cd4b6b | 312 | |
aa54ab1e A |
313 | pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4)); |
314 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78); | |
315 | pci_write_config_byte(dev, PCI_MIN_GNT, 0x08); | |
316 | pci_write_config_byte(dev, PCI_MAX_LAT, 0x08); | |
317 | ||
318 | pci_read_config_byte(dev, 0x51, &drive_fast); | |
319 | if (drive_fast & 0x80) | |
320 | pci_write_config_byte(dev, 0x51, drive_fast & ~0x80); | |
321 | } | |
322 | ||
669a5db4 JG |
323 | /** |
324 | * hpt36x_init_one - Initialise an HPT366/368 | |
325 | * @dev: PCI device | |
326 | * @id: Entry in match table | |
327 | * | |
328 | * Initialise an HPT36x device. There are some interesting complications | |
329 | * here. Firstly the chip may report 366 and be one of several variants. | |
330 | * Secondly all the timings depend on the clock for the chip which we must | |
331 | * detect and look up | |
332 | * | |
333 | * This is the known chip mappings. It may be missing a couple of later | |
334 | * releases. | |
335 | * | |
336 | * Chip version PCI Rev Notes | |
337 | * HPT366 4 (HPT366) 0 UDMA66 | |
338 | * HPT366 4 (HPT366) 1 UDMA66 | |
339 | * HPT368 4 (HPT366) 2 UDMA66 | |
340 | * HPT37x/30x 4 (HPT366) 3+ Other driver | |
341 | * | |
342 | */ | |
85cd7251 | 343 | |
669a5db4 JG |
344 | static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
345 | { | |
1626aeb8 | 346 | static const struct ata_port_info info_hpt366 = { |
1d2808fd | 347 | .flags = ATA_FLAG_SLAVE_POSS, |
14bdef98 EIB |
348 | .pio_mask = ATA_PIO4, |
349 | .mwdma_mask = ATA_MWDMA2, | |
bf6263a8 | 350 | .udma_mask = ATA_UDMA4, |
669a5db4 JG |
351 | .port_ops = &hpt366_port_ops |
352 | }; | |
887125e3 | 353 | const struct ata_port_info *ppi[] = { &info_hpt366, NULL }; |
669a5db4 | 354 | |
6ec0a86c | 355 | const void *hpriv = NULL; |
669a5db4 | 356 | u32 reg1; |
f08048e9 TH |
357 | int rc; |
358 | ||
359 | rc = pcim_enable_device(dev); | |
360 | if (rc) | |
361 | return rc; | |
669a5db4 | 362 | |
669a5db4 JG |
363 | /* May be a later chip in disguise. Check */ |
364 | /* Newer chips are not in the HPT36x driver. Ignore them */ | |
89d3b360 SS |
365 | if (dev->revision > 2) |
366 | return -ENODEV; | |
669a5db4 | 367 | |
aa54ab1e | 368 | hpt36x_init_chipset(dev); |
669a5db4 JG |
369 | |
370 | pci_read_config_dword(dev, 0x40, ®1); | |
85cd7251 | 371 | |
669a5db4 JG |
372 | /* PCI clocking determines the ATA timing values to use */ |
373 | /* info_hpt366 is safe against re-entry so we can scribble on it */ | |
28cd4b6b SS |
374 | switch ((reg1 & 0x700) >> 8) { |
375 | case 9: | |
376 | hpriv = &hpt366_40; | |
377 | break; | |
378 | case 5: | |
379 | hpriv = &hpt366_25; | |
380 | break; | |
381 | default: | |
382 | hpriv = &hpt366_33; | |
383 | break; | |
669a5db4 JG |
384 | } |
385 | /* Now kick off ATA set up */ | |
6ec0a86c | 386 | return ata_pci_bmdma_init_one(dev, ppi, &hpt36x_sht, (void *)hpriv, 0); |
669a5db4 JG |
387 | } |
388 | ||
58eb8cd5 | 389 | #ifdef CONFIG_PM_SLEEP |
aa54ab1e A |
390 | static int hpt36x_reinit_one(struct pci_dev *dev) |
391 | { | |
0a86e1c8 | 392 | struct ata_host *host = pci_get_drvdata(dev); |
f08048e9 TH |
393 | int rc; |
394 | ||
395 | rc = ata_pci_device_do_resume(dev); | |
396 | if (rc) | |
397 | return rc; | |
aa54ab1e | 398 | hpt36x_init_chipset(dev); |
f08048e9 TH |
399 | ata_host_resume(host); |
400 | return 0; | |
aa54ab1e | 401 | } |
438ac6d5 | 402 | #endif |
aa54ab1e | 403 | |
2d2744fc JG |
404 | static const struct pci_device_id hpt36x[] = { |
405 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), }, | |
2d2744fc | 406 | { }, |
669a5db4 JG |
407 | }; |
408 | ||
409 | static struct pci_driver hpt36x_pci_driver = { | |
28cd4b6b | 410 | .name = DRV_NAME, |
669a5db4 | 411 | .id_table = hpt36x, |
28cd4b6b | 412 | .probe = hpt36x_init_one, |
aa54ab1e | 413 | .remove = ata_pci_remove_one, |
58eb8cd5 | 414 | #ifdef CONFIG_PM_SLEEP |
aa54ab1e A |
415 | .suspend = ata_pci_device_suspend, |
416 | .resume = hpt36x_reinit_one, | |
438ac6d5 | 417 | #endif |
669a5db4 JG |
418 | }; |
419 | ||
2fc75da0 | 420 | module_pci_driver(hpt36x_pci_driver); |
669a5db4 | 421 | |
669a5db4 JG |
422 | MODULE_AUTHOR("Alan Cox"); |
423 | MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368"); | |
424 | MODULE_LICENSE("GPL"); | |
425 | MODULE_DEVICE_TABLE(pci, hpt36x); | |
426 | MODULE_VERSION(DRV_VERSION); |