2 * Libata driver for the highpoint 366 and 368 UDMA66 ATA controllers.
4 * This driver is heavily based upon:
6 * linux/drivers/ide/pci/hpt366.c Version 0.36 April 25, 2003
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
15 * Look into engine reset on timeout errors. Should not be
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>
29 #define DRV_NAME "pata_hpt366"
30 #define DRV_VERSION "0.5.3"
37 /* key for bus clock timings
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
45 * 13:17 cmd_low_time. active time of DIOW_/DIOR_ during task file
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
51 * 25:27 cmd_pre_high_time. time to initialize 1st PIO cycle for task
55 * 30 PIO_MST enable. if set, the chip is in bus master mode during
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 },
67 { XFER_MW_DMA_2, 0xa008d943 },
68 { XFER_MW_DMA_1, 0xa010d955 },
69 { XFER_MW_DMA_0, 0xa010d9fc },
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 },
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 },
86 { XFER_MW_DMA_2, 0xa0c8a731 },
87 { XFER_MW_DMA_1, 0xa0c8a732 }, /* 0xa0c8a733 */
88 { XFER_MW_DMA_0, 0xa0c8a797 },
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 */
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 },
105 { XFER_MW_DMA_2, 0xa0ca8521 },
106 { XFER_MW_DMA_1, 0xa0ca8532 },
107 { XFER_MW_DMA_0, 0xa0ca8575 },
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 },
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",
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",
128 static const char *bad_ata66_4[] = {
147 static const char *bad_ata66_3[] = {
152 static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, const char *list[])
154 unsigned char model_num[40];
159 ata_id_string(dev->id, model_num, ATA_ID_PROD_OFS, sizeof(model_num));
161 len = strnlen(s, sizeof(model_num));
163 /* ATAPI specifies that empty space is blank-filled; remove blanks */
164 while ((len > 0) && (s[len - 1] == ' ')) {
169 while(list[i] != NULL) {
170 if (!strncmp(list[i], s, len)) {
171 printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n",
181 * hpt366_filter - mode selection filter
185 * Block UDMA on devices that cause trouble with this controller.
188 static unsigned long hpt366_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask)
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);
198 return ata_pci_default_filter(ap, adev, mask);
202 * hpt36x_find_mode - reset the hpt36x bus
204 * @speed: transfer mode
206 * Return the 32bit register programming information for this channel
207 * that matches the speed provided.
210 static u32 hpt36x_find_mode(struct ata_port *ap, int speed)
212 struct hpt_clock *clocks = ap->host->private_data;
214 while(clocks->xfer_speed) {
215 if (clocks->xfer_speed == speed)
216 return clocks->timing;
220 return 0xffffffffU; /* silence compiler warning */
223 static int hpt36x_pre_reset(struct ata_port *ap)
225 static const struct pci_bits hpt36x_enable_bits[] = {
226 { 0x50, 1, 0x04, 0x04 },
227 { 0x54, 1, 0x04, 0x04 }
231 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
233 if (!pci_test_config_bits(pdev, &hpt36x_enable_bits[ap->port_no]))
236 pci_read_config_byte(pdev, 0x5A, &ata66);
237 if (ata66 & (1 << ap->port_no))
238 ap->cbl = ATA_CBL_PATA40;
240 ap->cbl = ATA_CBL_PATA80;
241 return ata_std_prereset(ap);
245 * hpt36x_error_handler - reset the hpt36x bus
246 * @ap: ATA port to reset
248 * Perform the reset handling for the 366/368
251 static void hpt36x_error_handler(struct ata_port *ap)
253 ata_bmdma_drive_eh(ap, hpt36x_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
257 * hpt366_set_piomode - PIO setup
259 * @adev: device on the interface
261 * Perform PIO mode setup.
264 static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev)
266 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
272 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
273 addr2 = 0x51 + 4 * ap->port_no;
275 /* Fast interrupt prediction disable, hold off interrupt disable */
276 pci_read_config_byte(pdev, addr2, &fast);
279 pci_write_config_byte(pdev, addr2, fast);
282 pci_read_config_dword(pdev, addr1, ®);
283 mode = hpt36x_find_mode(ap, adev->pio_mode);
284 mode &= ~0x8000000; /* No FIFO in PIO */
285 mode &= ~0x30070000; /* Leave config bits alone */
286 reg &= 0x30070000; /* Strip timing bits */
287 pci_write_config_dword(pdev, addr1, reg | mode);
291 * hpt366_set_dmamode - DMA timing setup
293 * @adev: Device being configured
295 * Set up the channel for MWDMA or UDMA modes. Much the same as with
296 * PIO, load the mode number and then set MWDMA or UDMA flag.
299 static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev)
301 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
307 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
308 addr2 = 0x51 + 4 * ap->port_no;
310 /* Fast interrupt prediction disable, hold off interrupt disable */
311 pci_read_config_byte(pdev, addr2, &fast);
314 pci_write_config_byte(pdev, addr2, fast);
317 pci_read_config_dword(pdev, addr1, ®);
318 mode = hpt36x_find_mode(ap, adev->dma_mode);
319 mode |= 0x8000000; /* FIFO in MWDMA or UDMA */
320 mode &= ~0xC0000000; /* Leave config bits alone */
321 reg &= 0xC0000000; /* Strip timing bits */
322 pci_write_config_dword(pdev, addr1, reg | mode);
325 static struct scsi_host_template hpt36x_sht = {
326 .module = THIS_MODULE,
328 .ioctl = ata_scsi_ioctl,
329 .queuecommand = ata_scsi_queuecmd,
330 .can_queue = ATA_DEF_QUEUE,
331 .this_id = ATA_SHT_THIS_ID,
332 .sg_tablesize = LIBATA_MAX_PRD,
333 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
334 .emulated = ATA_SHT_EMULATED,
335 .use_clustering = ATA_SHT_USE_CLUSTERING,
336 .proc_name = DRV_NAME,
337 .dma_boundary = ATA_DMA_BOUNDARY,
338 .slave_configure = ata_scsi_slave_config,
339 .slave_destroy = ata_scsi_slave_destroy,
340 .bios_param = ata_std_bios_param,
341 .resume = ata_scsi_device_resume,
342 .suspend = ata_scsi_device_suspend,
346 * Configuration for HPT366/68
349 static struct ata_port_operations hpt366_port_ops = {
350 .port_disable = ata_port_disable,
351 .set_piomode = hpt366_set_piomode,
352 .set_dmamode = hpt366_set_dmamode,
353 .mode_filter = hpt366_filter,
355 .tf_load = ata_tf_load,
356 .tf_read = ata_tf_read,
357 .check_status = ata_check_status,
358 .exec_command = ata_exec_command,
359 .dev_select = ata_std_dev_select,
361 .freeze = ata_bmdma_freeze,
362 .thaw = ata_bmdma_thaw,
363 .error_handler = hpt36x_error_handler,
364 .post_internal_cmd = ata_bmdma_post_internal_cmd,
366 .bmdma_setup = ata_bmdma_setup,
367 .bmdma_start = ata_bmdma_start,
368 .bmdma_stop = ata_bmdma_stop,
369 .bmdma_status = ata_bmdma_status,
371 .qc_prep = ata_qc_prep,
372 .qc_issue = ata_qc_issue_prot,
374 .data_xfer = ata_pio_data_xfer,
376 .irq_handler = ata_interrupt,
377 .irq_clear = ata_bmdma_irq_clear,
379 .port_start = ata_port_start,
380 .port_stop = ata_port_stop,
381 .host_stop = ata_host_stop
385 * hpt36x_init_chipset - common chip setup
388 * Perform the chip setup work that must be done at both init and
392 static void hpt36x_init_chipset(struct pci_dev *dev)
395 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
396 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
397 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
398 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
400 pci_read_config_byte(dev, 0x51, &drive_fast);
401 if (drive_fast & 0x80)
402 pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
406 * hpt36x_init_one - Initialise an HPT366/368
408 * @id: Entry in match table
410 * Initialise an HPT36x device. There are some interesting complications
411 * here. Firstly the chip may report 366 and be one of several variants.
412 * Secondly all the timings depend on the clock for the chip which we must
415 * This is the known chip mappings. It may be missing a couple of later
418 * Chip version PCI Rev Notes
419 * HPT366 4 (HPT366) 0 UDMA66
420 * HPT366 4 (HPT366) 1 UDMA66
421 * HPT368 4 (HPT366) 2 UDMA66
422 * HPT37x/30x 4 (HPT366) 3+ Other driver
426 static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
428 static struct ata_port_info info_hpt366 = {
430 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
434 .port_ops = &hpt366_port_ops
436 struct ata_port_info *port_info[2] = {&info_hpt366, &info_hpt366};
441 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
444 /* May be a later chip in disguise. Check */
445 /* Newer chips are not in the HPT36x driver. Ignore them */
449 hpt36x_init_chipset(dev);
451 pci_read_config_dword(dev, 0x40, ®1);
453 /* PCI clocking determines the ATA timing values to use */
454 /* info_hpt366 is safe against re-entry so we can scribble on it */
455 switch((reg1 & 0x700) >> 8) {
457 info_hpt366.private_data = &hpt366_40;
460 info_hpt366.private_data = &hpt366_25;
463 info_hpt366.private_data = &hpt366_33;
466 /* Now kick off ATA set up */
467 return ata_pci_init_one(dev, port_info, 2);
470 static int hpt36x_reinit_one(struct pci_dev *dev)
472 hpt36x_init_chipset(dev);
473 return ata_pci_device_resume(dev);
477 static const struct pci_device_id hpt36x[] = {
478 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
482 static struct pci_driver hpt36x_pci_driver = {
485 .probe = hpt36x_init_one,
486 .remove = ata_pci_remove_one,
487 .suspend = ata_pci_device_suspend,
488 .resume = hpt36x_reinit_one,
491 static int __init hpt36x_init(void)
493 return pci_register_driver(&hpt36x_pci_driver);
496 static void __exit hpt36x_exit(void)
498 pci_unregister_driver(&hpt36x_pci_driver);
501 MODULE_AUTHOR("Alan Cox");
502 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
503 MODULE_LICENSE("GPL");
504 MODULE_DEVICE_TABLE(pci, hpt36x);
505 MODULE_VERSION(DRV_VERSION);
507 module_init(hpt36x_init);
508 module_exit(hpt36x_exit);