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[ATA_ID_PROD_LEN + 1];
157 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
159 while (list[i] != NULL) {
160 if (!strcmp(list[i], model_num)) {
161 printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n",
171 * hpt366_filter - mode selection filter
175 * Block UDMA on devices that cause trouble with this controller.
178 static unsigned long hpt366_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask)
180 if (adev->class == ATA_DEV_ATA) {
181 if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
182 mask &= ~ATA_MASK_UDMA;
183 if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3))
184 mask &= ~(0x07 << ATA_SHIFT_UDMA);
185 if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
186 mask &= ~(0x0F << ATA_SHIFT_UDMA);
188 return ata_pci_default_filter(ap, adev, mask);
192 * hpt36x_find_mode - reset the hpt36x bus
194 * @speed: transfer mode
196 * Return the 32bit register programming information for this channel
197 * that matches the speed provided.
200 static u32 hpt36x_find_mode(struct ata_port *ap, int speed)
202 struct hpt_clock *clocks = ap->host->private_data;
204 while(clocks->xfer_speed) {
205 if (clocks->xfer_speed == speed)
206 return clocks->timing;
210 return 0xffffffffU; /* silence compiler warning */
213 static int hpt36x_pre_reset(struct ata_port *ap)
215 static const struct pci_bits hpt36x_enable_bits[] = {
216 { 0x50, 1, 0x04, 0x04 },
217 { 0x54, 1, 0x04, 0x04 }
221 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
223 if (!pci_test_config_bits(pdev, &hpt36x_enable_bits[ap->port_no]))
226 pci_read_config_byte(pdev, 0x5A, &ata66);
227 if (ata66 & (1 << ap->port_no))
228 ap->cbl = ATA_CBL_PATA40;
230 ap->cbl = ATA_CBL_PATA80;
231 return ata_std_prereset(ap);
235 * hpt36x_error_handler - reset the hpt36x bus
236 * @ap: ATA port to reset
238 * Perform the reset handling for the 366/368
241 static void hpt36x_error_handler(struct ata_port *ap)
243 ata_bmdma_drive_eh(ap, hpt36x_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
247 * hpt366_set_piomode - PIO setup
249 * @adev: device on the interface
251 * Perform PIO mode setup.
254 static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev)
256 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
262 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
263 addr2 = 0x51 + 4 * ap->port_no;
265 /* Fast interrupt prediction disable, hold off interrupt disable */
266 pci_read_config_byte(pdev, addr2, &fast);
269 pci_write_config_byte(pdev, addr2, fast);
272 pci_read_config_dword(pdev, addr1, ®);
273 mode = hpt36x_find_mode(ap, adev->pio_mode);
274 mode &= ~0x8000000; /* No FIFO in PIO */
275 mode &= ~0x30070000; /* Leave config bits alone */
276 reg &= 0x30070000; /* Strip timing bits */
277 pci_write_config_dword(pdev, addr1, reg | mode);
281 * hpt366_set_dmamode - DMA timing setup
283 * @adev: Device being configured
285 * Set up the channel for MWDMA or UDMA modes. Much the same as with
286 * PIO, load the mode number and then set MWDMA or UDMA flag.
289 static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev)
291 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
297 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
298 addr2 = 0x51 + 4 * ap->port_no;
300 /* Fast interrupt prediction disable, hold off interrupt disable */
301 pci_read_config_byte(pdev, addr2, &fast);
304 pci_write_config_byte(pdev, addr2, fast);
307 pci_read_config_dword(pdev, addr1, ®);
308 mode = hpt36x_find_mode(ap, adev->dma_mode);
309 mode |= 0x8000000; /* FIFO in MWDMA or UDMA */
310 mode &= ~0xC0000000; /* Leave config bits alone */
311 reg &= 0xC0000000; /* Strip timing bits */
312 pci_write_config_dword(pdev, addr1, reg | mode);
315 static struct scsi_host_template hpt36x_sht = {
316 .module = THIS_MODULE,
318 .ioctl = ata_scsi_ioctl,
319 .queuecommand = ata_scsi_queuecmd,
320 .can_queue = ATA_DEF_QUEUE,
321 .this_id = ATA_SHT_THIS_ID,
322 .sg_tablesize = LIBATA_MAX_PRD,
323 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
324 .emulated = ATA_SHT_EMULATED,
325 .use_clustering = ATA_SHT_USE_CLUSTERING,
326 .proc_name = DRV_NAME,
327 .dma_boundary = ATA_DMA_BOUNDARY,
328 .slave_configure = ata_scsi_slave_config,
329 .slave_destroy = ata_scsi_slave_destroy,
330 .bios_param = ata_std_bios_param,
331 .resume = ata_scsi_device_resume,
332 .suspend = ata_scsi_device_suspend,
336 * Configuration for HPT366/68
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,
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,
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,
356 .bmdma_setup = ata_bmdma_setup,
357 .bmdma_start = ata_bmdma_start,
358 .bmdma_stop = ata_bmdma_stop,
359 .bmdma_status = ata_bmdma_status,
361 .qc_prep = ata_qc_prep,
362 .qc_issue = ata_qc_issue_prot,
364 .data_xfer = ata_data_xfer,
366 .irq_handler = ata_interrupt,
367 .irq_clear = ata_bmdma_irq_clear,
368 .irq_on = ata_irq_on,
369 .irq_ack = ata_irq_ack,
371 .port_start = ata_port_start,
375 * hpt36x_init_chipset - common chip setup
378 * Perform the chip setup work that must be done at both init and
382 static void hpt36x_init_chipset(struct pci_dev *dev)
385 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
386 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
387 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
388 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
390 pci_read_config_byte(dev, 0x51, &drive_fast);
391 if (drive_fast & 0x80)
392 pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
396 * hpt36x_init_one - Initialise an HPT366/368
398 * @id: Entry in match table
400 * Initialise an HPT36x device. There are some interesting complications
401 * here. Firstly the chip may report 366 and be one of several variants.
402 * Secondly all the timings depend on the clock for the chip which we must
405 * This is the known chip mappings. It may be missing a couple of later
408 * Chip version PCI Rev Notes
409 * HPT366 4 (HPT366) 0 UDMA66
410 * HPT366 4 (HPT366) 1 UDMA66
411 * HPT368 4 (HPT366) 2 UDMA66
412 * HPT37x/30x 4 (HPT366) 3+ Other driver
416 static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
418 static struct ata_port_info info_hpt366 = {
420 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
424 .port_ops = &hpt366_port_ops
426 struct ata_port_info *port_info[2] = {&info_hpt366, &info_hpt366};
431 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
434 /* May be a later chip in disguise. Check */
435 /* Newer chips are not in the HPT36x driver. Ignore them */
439 hpt36x_init_chipset(dev);
441 pci_read_config_dword(dev, 0x40, ®1);
443 /* PCI clocking determines the ATA timing values to use */
444 /* info_hpt366 is safe against re-entry so we can scribble on it */
445 switch((reg1 & 0x700) >> 8) {
447 info_hpt366.private_data = &hpt366_40;
450 info_hpt366.private_data = &hpt366_25;
453 info_hpt366.private_data = &hpt366_33;
456 /* Now kick off ATA set up */
457 return ata_pci_init_one(dev, port_info, 2);
460 static int hpt36x_reinit_one(struct pci_dev *dev)
462 hpt36x_init_chipset(dev);
463 return ata_pci_device_resume(dev);
467 static const struct pci_device_id hpt36x[] = {
468 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
472 static struct pci_driver hpt36x_pci_driver = {
475 .probe = hpt36x_init_one,
476 .remove = ata_pci_remove_one,
477 .suspend = ata_pci_device_suspend,
478 .resume = hpt36x_reinit_one,
481 static int __init hpt36x_init(void)
483 return pci_register_driver(&hpt36x_pci_driver);
486 static void __exit hpt36x_exit(void)
488 pci_unregister_driver(&hpt36x_pci_driver);
491 MODULE_AUTHOR("Alan Cox");
492 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
493 MODULE_LICENSE("GPL");
494 MODULE_DEVICE_TABLE(pci, hpt36x);
495 MODULE_VERSION(DRV_VERSION);
497 module_init(hpt36x_init);
498 module_exit(hpt36x_exit);