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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 | |
14 | * Maybe PLL mode | |
15 | * Look into engine reset on timeout errors. Should not be | |
16 | * required. | |
17 | */ | |
18 | ||
19 | ||
20 | #include <linux/kernel.h> | |
21 | #include <linux/module.h> | |
22 | #include <linux/pci.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/blkdev.h> | |
25 | #include <linux/delay.h> | |
26 | #include <scsi/scsi_host.h> | |
27 | #include <linux/libata.h> | |
28 | ||
29 | #define DRV_NAME "pata_hpt366" | |
30 | #define DRV_VERSION "0.5" | |
31 | ||
32 | struct hpt_clock { | |
33 | u8 xfer_speed; | |
34 | u32 timing; | |
35 | }; | |
36 | ||
37 | /* key for bus clock timings | |
38 | * bit | |
39 | * 0:3 data_high_time. inactive time of DIOW_/DIOR_ for PIO and MW | |
40 | * DMA. cycles = value + 1 | |
41 | * 4:8 data_low_time. active time of DIOW_/DIOR_ for PIO and MW | |
42 | * DMA. cycles = value + 1 | |
43 | * 9:12 cmd_high_time. inactive time of DIOW_/DIOR_ during task file | |
44 | * register access. | |
45 | * 13:17 cmd_low_time. active time of DIOW_/DIOR_ during task file | |
46 | * register access. | |
47 | * 18:21 udma_cycle_time. clock freq and clock cycles for UDMA xfer. | |
48 | * during task file register access. | |
49 | * 22:24 pre_high_time. time to initialize 1st cycle for PIO and MW DMA | |
50 | * xfer. | |
51 | * 25:27 cmd_pre_high_time. time to initialize 1st PIO cycle for task | |
52 | * register access. | |
53 | * 28 UDMA enable | |
54 | * 29 DMA enable | |
55 | * 30 PIO_MST enable. if set, the chip is in bus master mode during | |
56 | * PIO. | |
57 | * 31 FIFO enable. | |
58 | */ | |
59 | ||
60 | static const struct hpt_clock hpt366_40[] = { | |
61 | { XFER_UDMA_4, 0x900fd943 }, | |
62 | { XFER_UDMA_3, 0x900ad943 }, | |
63 | { XFER_UDMA_2, 0x900bd943 }, | |
64 | { XFER_UDMA_1, 0x9008d943 }, | |
65 | { XFER_UDMA_0, 0x9008d943 }, | |
66 | ||
67 | { XFER_MW_DMA_2, 0xa008d943 }, | |
68 | { XFER_MW_DMA_1, 0xa010d955 }, | |
69 | { XFER_MW_DMA_0, 0xa010d9fc }, | |
70 | ||
71 | { XFER_PIO_4, 0xc008d963 }, | |
72 | { XFER_PIO_3, 0xc010d974 }, | |
73 | { XFER_PIO_2, 0xc010d997 }, | |
74 | { XFER_PIO_1, 0xc010d9c7 }, | |
75 | { XFER_PIO_0, 0xc018d9d9 }, | |
76 | { 0, 0x0120d9d9 } | |
77 | }; | |
78 | ||
79 | static const struct hpt_clock hpt366_33[] = { | |
80 | { XFER_UDMA_4, 0x90c9a731 }, | |
81 | { XFER_UDMA_3, 0x90cfa731 }, | |
82 | { XFER_UDMA_2, 0x90caa731 }, | |
83 | { XFER_UDMA_1, 0x90cba731 }, | |
84 | { XFER_UDMA_0, 0x90c8a731 }, | |
85 | ||
86 | { XFER_MW_DMA_2, 0xa0c8a731 }, | |
87 | { XFER_MW_DMA_1, 0xa0c8a732 }, /* 0xa0c8a733 */ | |
88 | { XFER_MW_DMA_0, 0xa0c8a797 }, | |
89 | ||
90 | { XFER_PIO_4, 0xc0c8a731 }, | |
91 | { XFER_PIO_3, 0xc0c8a742 }, | |
92 | { XFER_PIO_2, 0xc0d0a753 }, | |
93 | { XFER_PIO_1, 0xc0d0a7a3 }, /* 0xc0d0a793 */ | |
94 | { XFER_PIO_0, 0xc0d0a7aa }, /* 0xc0d0a7a7 */ | |
95 | { 0, 0x0120a7a7 } | |
96 | }; | |
97 | ||
98 | static const struct hpt_clock hpt366_25[] = { | |
99 | { XFER_UDMA_4, 0x90c98521 }, | |
100 | { XFER_UDMA_3, 0x90cf8521 }, | |
101 | { XFER_UDMA_2, 0x90cf8521 }, | |
102 | { XFER_UDMA_1, 0x90cb8521 }, | |
103 | { XFER_UDMA_0, 0x90cb8521 }, | |
104 | ||
105 | { XFER_MW_DMA_2, 0xa0ca8521 }, | |
106 | { XFER_MW_DMA_1, 0xa0ca8532 }, | |
107 | { XFER_MW_DMA_0, 0xa0ca8575 }, | |
108 | ||
109 | { XFER_PIO_4, 0xc0ca8521 }, | |
110 | { XFER_PIO_3, 0xc0ca8532 }, | |
111 | { XFER_PIO_2, 0xc0ca8542 }, | |
112 | { XFER_PIO_1, 0xc0d08572 }, | |
113 | { XFER_PIO_0, 0xc0d08585 }, | |
114 | { 0, 0x01208585 } | |
115 | }; | |
116 | ||
117 | static const char *bad_ata33[] = { | |
118 | "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", "Maxtor 90845U3", "Maxtor 90650U2", | |
119 | "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2", | |
120 | "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4", | |
121 | "Maxtor 90510D4", | |
122 | "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2", | |
123 | "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4", | |
124 | "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2", | |
125 | NULL | |
126 | }; | |
127 | ||
128 | static const char *bad_ata66_4[] = { | |
129 | "IBM-DTLA-307075", | |
130 | "IBM-DTLA-307060", | |
131 | "IBM-DTLA-307045", | |
132 | "IBM-DTLA-307030", | |
133 | "IBM-DTLA-307020", | |
134 | "IBM-DTLA-307015", | |
135 | "IBM-DTLA-305040", | |
136 | "IBM-DTLA-305030", | |
137 | "IBM-DTLA-305020", | |
138 | "IC35L010AVER07-0", | |
139 | "IC35L020AVER07-0", | |
140 | "IC35L030AVER07-0", | |
141 | "IC35L040AVER07-0", | |
142 | "IC35L060AVER07-0", | |
143 | "WDC AC310200R", | |
144 | NULL | |
145 | }; | |
146 | ||
147 | static const char *bad_ata66_3[] = { | |
148 | "WDC AC310200R", | |
149 | NULL | |
150 | }; | |
151 | ||
152 | static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, const char *list[]) | |
153 | { | |
154 | unsigned char model_num[40]; | |
155 | char *s; | |
156 | unsigned int len; | |
157 | int i = 0; | |
158 | ||
159 | ata_id_string(dev->id, model_num, ATA_ID_PROD_OFS, sizeof(model_num)); | |
160 | s = &model_num[0]; | |
161 | len = strnlen(s, sizeof(model_num)); | |
162 | ||
163 | /* ATAPI specifies that empty space is blank-filled; remove blanks */ | |
164 | while ((len > 0) && (s[len - 1] == ' ')) { | |
165 | len--; | |
166 | s[len] = 0; | |
167 | } | |
168 | ||
169 | while(list[i] != NULL) { | |
170 | if (!strncmp(list[i], s, len)) { | |
85cd7251 | 171 | printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n", |
669a5db4 JG |
172 | modestr, list[i]); |
173 | return 1; | |
174 | } | |
175 | i++; | |
176 | } | |
177 | return 0; | |
178 | } | |
179 | ||
180 | /** | |
181 | * hpt366_filter - mode selection filter | |
182 | * @ap: ATA interface | |
183 | * @adev: ATA device | |
184 | * | |
185 | * Block UDMA on devices that cause trouble with this controller. | |
186 | */ | |
85cd7251 | 187 | |
669a5db4 JG |
188 | static unsigned long hpt366_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask) |
189 | { | |
190 | if (adev->class == ATA_DEV_ATA) { | |
191 | if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33)) | |
192 | mask &= ~ATA_MASK_UDMA; | |
193 | if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3)) | |
194 | mask &= ~(0x07 << ATA_SHIFT_UDMA); | |
195 | if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4)) | |
196 | mask &= ~(0x0F << ATA_SHIFT_UDMA); | |
197 | } | |
198 | return ata_pci_default_filter(ap, adev, mask); | |
199 | } | |
200 | ||
201 | /** | |
202 | * hpt36x_find_mode - reset the hpt36x 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 hpt36x_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 | } | |
85cd7251 | 222 | |
669a5db4 JG |
223 | static int hpt36x_pre_reset(struct ata_port *ap) |
224 | { | |
225 | u8 ata66; | |
226 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
85cd7251 | 227 | |
669a5db4 JG |
228 | pci_read_config_byte(pdev, 0x5A, &ata66); |
229 | if (ata66 & (1 << ap->port_no)) | |
230 | ap->cbl = ATA_CBL_PATA40; | |
231 | else | |
232 | ap->cbl = ATA_CBL_PATA80; | |
233 | return ata_std_prereset(ap); | |
234 | } | |
235 | ||
236 | /** | |
237 | * hpt36x_error_handler - reset the hpt36x bus | |
238 | * @ap: ATA port to reset | |
239 | * | |
240 | * Perform the reset handling for the 366/368 | |
241 | */ | |
85cd7251 | 242 | |
669a5db4 JG |
243 | static void hpt36x_error_handler(struct ata_port *ap) |
244 | { | |
245 | ata_bmdma_drive_eh(ap, hpt36x_pre_reset, ata_std_softreset, NULL, ata_std_postreset); | |
246 | } | |
247 | ||
248 | /** | |
249 | * hpt366_set_piomode - PIO setup | |
250 | * @ap: ATA interface | |
251 | * @adev: device on the interface | |
252 | * | |
85cd7251 | 253 | * Perform PIO mode setup. |
669a5db4 | 254 | */ |
85cd7251 | 255 | |
669a5db4 JG |
256 | static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev) |
257 | { | |
258 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
259 | u32 addr1, addr2; | |
260 | u32 reg; | |
261 | u32 mode; | |
262 | u8 fast; | |
263 | ||
264 | addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no); | |
265 | addr2 = 0x51 + 4 * ap->port_no; | |
85cd7251 | 266 | |
669a5db4 JG |
267 | /* Fast interrupt prediction disable, hold off interrupt disable */ |
268 | pci_read_config_byte(pdev, addr2, &fast); | |
269 | if (fast & 0x80) { | |
270 | fast &= ~0x80; | |
271 | pci_write_config_byte(pdev, addr2, fast); | |
272 | } | |
85cd7251 | 273 | |
669a5db4 JG |
274 | pci_read_config_dword(pdev, addr1, ®); |
275 | mode = hpt36x_find_mode(ap, adev->pio_mode); | |
276 | mode &= ~0x8000000; /* No FIFO in PIO */ | |
277 | mode &= ~0x30070000; /* Leave config bits alone */ | |
278 | reg &= 0x30070000; /* Strip timing bits */ | |
279 | pci_write_config_dword(pdev, addr1, reg | mode); | |
280 | } | |
281 | ||
282 | /** | |
283 | * hpt366_set_dmamode - DMA timing setup | |
284 | * @ap: ATA interface | |
285 | * @adev: Device being configured | |
286 | * | |
287 | * Set up the channel for MWDMA or UDMA modes. Much the same as with | |
288 | * PIO, load the mode number and then set MWDMA or UDMA flag. | |
289 | */ | |
85cd7251 | 290 | |
669a5db4 JG |
291 | static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev) |
292 | { | |
293 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
294 | u32 addr1, addr2; | |
295 | u32 reg; | |
296 | u32 mode; | |
297 | u8 fast; | |
298 | ||
299 | addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no); | |
300 | addr2 = 0x51 + 4 * ap->port_no; | |
85cd7251 | 301 | |
669a5db4 JG |
302 | /* Fast interrupt prediction disable, hold off interrupt disable */ |
303 | pci_read_config_byte(pdev, addr2, &fast); | |
304 | if (fast & 0x80) { | |
305 | fast &= ~0x80; | |
306 | pci_write_config_byte(pdev, addr2, fast); | |
307 | } | |
85cd7251 | 308 | |
669a5db4 JG |
309 | pci_read_config_dword(pdev, addr1, ®); |
310 | mode = hpt36x_find_mode(ap, adev->dma_mode); | |
311 | mode |= 0x8000000; /* FIFO in MWDMA or UDMA */ | |
312 | mode &= ~0xC0000000; /* Leave config bits alone */ | |
313 | reg &= 0xC0000000; /* Strip timing bits */ | |
314 | pci_write_config_dword(pdev, addr1, reg | mode); | |
315 | } | |
316 | ||
317 | static struct scsi_host_template hpt36x_sht = { | |
318 | .module = THIS_MODULE, | |
319 | .name = DRV_NAME, | |
320 | .ioctl = ata_scsi_ioctl, | |
321 | .queuecommand = ata_scsi_queuecmd, | |
322 | .can_queue = ATA_DEF_QUEUE, | |
323 | .this_id = ATA_SHT_THIS_ID, | |
324 | .sg_tablesize = LIBATA_MAX_PRD, | |
325 | .max_sectors = ATA_MAX_SECTORS, | |
326 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, | |
327 | .emulated = ATA_SHT_EMULATED, | |
328 | .use_clustering = ATA_SHT_USE_CLUSTERING, | |
329 | .proc_name = DRV_NAME, | |
330 | .dma_boundary = ATA_DMA_BOUNDARY, | |
331 | .slave_configure = ata_scsi_slave_config, | |
332 | .bios_param = ata_std_bios_param, | |
333 | }; | |
334 | ||
335 | /* | |
336 | * Configuration for HPT366/68 | |
337 | */ | |
85cd7251 | 338 | |
669a5db4 JG |
339 | static struct ata_port_operations hpt366_port_ops = { |
340 | .port_disable = ata_port_disable, | |
341 | .set_piomode = hpt366_set_piomode, | |
342 | .set_dmamode = hpt366_set_dmamode, | |
343 | .mode_filter = hpt366_filter, | |
85cd7251 | 344 | |
669a5db4 JG |
345 | .tf_load = ata_tf_load, |
346 | .tf_read = ata_tf_read, | |
347 | .check_status = ata_check_status, | |
348 | .exec_command = ata_exec_command, | |
349 | .dev_select = ata_std_dev_select, | |
350 | ||
351 | .freeze = ata_bmdma_freeze, | |
352 | .thaw = ata_bmdma_thaw, | |
353 | .error_handler = hpt36x_error_handler, | |
354 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | |
355 | ||
356 | .bmdma_setup = ata_bmdma_setup, | |
357 | .bmdma_start = ata_bmdma_start, | |
358 | .bmdma_stop = ata_bmdma_stop, | |
359 | .bmdma_status = ata_bmdma_status, | |
360 | ||
361 | .qc_prep = ata_qc_prep, | |
362 | .qc_issue = ata_qc_issue_prot, | |
bda30288 | 363 | |
669a5db4 JG |
364 | .data_xfer = ata_pio_data_xfer, |
365 | ||
366 | .irq_handler = ata_interrupt, | |
367 | .irq_clear = ata_bmdma_irq_clear, | |
368 | ||
369 | .port_start = ata_port_start, | |
370 | .port_stop = ata_port_stop, | |
371 | .host_stop = ata_host_stop | |
85cd7251 | 372 | }; |
669a5db4 JG |
373 | |
374 | /** | |
375 | * hpt36x_init_one - Initialise an HPT366/368 | |
376 | * @dev: PCI device | |
377 | * @id: Entry in match table | |
378 | * | |
379 | * Initialise an HPT36x device. There are some interesting complications | |
380 | * here. Firstly the chip may report 366 and be one of several variants. | |
381 | * Secondly all the timings depend on the clock for the chip which we must | |
382 | * detect and look up | |
383 | * | |
384 | * This is the known chip mappings. It may be missing a couple of later | |
385 | * releases. | |
386 | * | |
387 | * Chip version PCI Rev Notes | |
388 | * HPT366 4 (HPT366) 0 UDMA66 | |
389 | * HPT366 4 (HPT366) 1 UDMA66 | |
390 | * HPT368 4 (HPT366) 2 UDMA66 | |
391 | * HPT37x/30x 4 (HPT366) 3+ Other driver | |
392 | * | |
393 | */ | |
85cd7251 | 394 | |
669a5db4 JG |
395 | static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id) |
396 | { | |
397 | static struct ata_port_info info_hpt366 = { | |
398 | .sht = &hpt36x_sht, | |
399 | .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, | |
400 | .pio_mask = 0x1f, | |
401 | .mwdma_mask = 0x07, | |
402 | .udma_mask = 0x1f, | |
403 | .port_ops = &hpt366_port_ops | |
404 | }; | |
405 | struct ata_port_info *port_info[2] = {&info_hpt366, &info_hpt366}; | |
406 | ||
407 | u32 class_rev; | |
408 | u32 reg1; | |
409 | u8 drive_fast; | |
410 | ||
411 | pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev); | |
412 | class_rev &= 0xFF; | |
85cd7251 | 413 | |
669a5db4 JG |
414 | /* May be a later chip in disguise. Check */ |
415 | /* Newer chips are not in the HPT36x driver. Ignore them */ | |
416 | if (class_rev > 2) | |
417 | return -ENODEV; | |
418 | ||
419 | pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4)); | |
420 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78); | |
421 | pci_write_config_byte(dev, PCI_MIN_GNT, 0x08); | |
422 | pci_write_config_byte(dev, PCI_MAX_LAT, 0x08); | |
423 | ||
424 | pci_read_config_byte(dev, 0x51, &drive_fast); | |
425 | if (drive_fast & 0x80) | |
426 | pci_write_config_byte(dev, 0x51, drive_fast & ~0x80); | |
427 | ||
428 | pci_read_config_dword(dev, 0x40, ®1); | |
85cd7251 | 429 | |
669a5db4 JG |
430 | /* PCI clocking determines the ATA timing values to use */ |
431 | /* info_hpt366 is safe against re-entry so we can scribble on it */ | |
432 | switch(reg1 & 0x700) { | |
433 | case 5: | |
434 | info_hpt366.private_data = &hpt366_40; | |
435 | break; | |
436 | case 9: | |
437 | info_hpt366.private_data = &hpt366_25; | |
438 | break; | |
439 | default: | |
440 | info_hpt366.private_data = &hpt366_33; | |
441 | break; | |
442 | } | |
443 | /* Now kick off ATA set up */ | |
444 | return ata_pci_init_one(dev, port_info, 2); | |
445 | } | |
446 | ||
2d2744fc JG |
447 | static const struct pci_device_id hpt36x[] = { |
448 | { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), }, | |
449 | ||
450 | { }, | |
669a5db4 JG |
451 | }; |
452 | ||
453 | static struct pci_driver hpt36x_pci_driver = { | |
2d2744fc | 454 | .name = DRV_NAME, |
669a5db4 JG |
455 | .id_table = hpt36x, |
456 | .probe = hpt36x_init_one, | |
457 | .remove = ata_pci_remove_one | |
458 | }; | |
459 | ||
460 | static int __init hpt36x_init(void) | |
461 | { | |
462 | return pci_register_driver(&hpt36x_pci_driver); | |
463 | } | |
464 | ||
465 | ||
466 | static void __exit hpt36x_exit(void) | |
467 | { | |
468 | pci_unregister_driver(&hpt36x_pci_driver); | |
469 | } | |
470 | ||
471 | ||
472 | MODULE_AUTHOR("Alan Cox"); | |
473 | MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368"); | |
474 | MODULE_LICENSE("GPL"); | |
475 | MODULE_DEVICE_TABLE(pci, hpt36x); | |
476 | MODULE_VERSION(DRV_VERSION); | |
477 | ||
478 | module_init(hpt36x_init); | |
479 | module_exit(hpt36x_exit); |