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 "0.6.1"
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
174 * Block UDMA on devices that cause trouble with this controller.
177 static unsigned long hpt366_filter(struct ata_device *adev, unsigned long mask)
179 if (adev->class == ATA_DEV_ATA) {
180 if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
181 mask &= ~ATA_MASK_UDMA;
182 if (hpt_dma_blacklisted(adev, "UDMA3", bad_ata66_3))
183 mask &= ~(0x07 << ATA_SHIFT_UDMA);
184 if (hpt_dma_blacklisted(adev, "UDMA4", bad_ata66_4))
185 mask &= ~(0x0F << ATA_SHIFT_UDMA);
187 return ata_pci_default_filter(adev, mask);
191 * hpt36x_find_mode - reset the hpt36x bus
193 * @speed: transfer mode
195 * Return the 32bit register programming information for this channel
196 * that matches the speed provided.
199 static u32 hpt36x_find_mode(struct ata_port *ap, int speed)
201 struct hpt_clock *clocks = ap->host->private_data;
203 while(clocks->xfer_speed) {
204 if (clocks->xfer_speed == speed)
205 return clocks->timing;
209 return 0xffffffffU; /* silence compiler warning */
212 static int hpt36x_cable_detect(struct ata_port *ap)
215 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
217 pci_read_config_byte(pdev, 0x5A, &ata66);
218 if (ata66 & (1 << ap->port_no))
219 return ATA_CBL_PATA40;
220 return ATA_CBL_PATA80;
224 * hpt366_set_piomode - PIO setup
226 * @adev: device on the interface
228 * Perform PIO mode setup.
231 static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev)
233 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
239 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
240 addr2 = 0x51 + 4 * ap->port_no;
242 /* Fast interrupt prediction disable, hold off interrupt disable */
243 pci_read_config_byte(pdev, addr2, &fast);
246 pci_write_config_byte(pdev, addr2, fast);
249 pci_read_config_dword(pdev, addr1, ®);
250 mode = hpt36x_find_mode(ap, adev->pio_mode);
251 mode &= ~0x8000000; /* No FIFO in PIO */
252 mode &= ~0x30070000; /* Leave config bits alone */
253 reg &= 0x30070000; /* Strip timing bits */
254 pci_write_config_dword(pdev, addr1, reg | mode);
258 * hpt366_set_dmamode - DMA timing setup
260 * @adev: Device being configured
262 * Set up the channel for MWDMA or UDMA modes. Much the same as with
263 * PIO, load the mode number and then set MWDMA or UDMA flag.
266 static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev)
268 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
274 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
275 addr2 = 0x51 + 4 * ap->port_no;
277 /* Fast interrupt prediction disable, hold off interrupt disable */
278 pci_read_config_byte(pdev, addr2, &fast);
281 pci_write_config_byte(pdev, addr2, fast);
284 pci_read_config_dword(pdev, addr1, ®);
285 mode = hpt36x_find_mode(ap, adev->dma_mode);
286 mode |= 0x8000000; /* FIFO in MWDMA or UDMA */
287 mode &= ~0xC0000000; /* Leave config bits alone */
288 reg &= 0xC0000000; /* Strip timing bits */
289 pci_write_config_dword(pdev, addr1, reg | mode);
292 static struct scsi_host_template hpt36x_sht = {
293 .module = THIS_MODULE,
295 .ioctl = ata_scsi_ioctl,
296 .queuecommand = ata_scsi_queuecmd,
297 .can_queue = ATA_DEF_QUEUE,
298 .this_id = ATA_SHT_THIS_ID,
299 .sg_tablesize = LIBATA_MAX_PRD,
300 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
301 .emulated = ATA_SHT_EMULATED,
302 .use_clustering = ATA_SHT_USE_CLUSTERING,
303 .proc_name = DRV_NAME,
304 .dma_boundary = ATA_DMA_BOUNDARY,
305 .slave_configure = ata_scsi_slave_config,
306 .slave_destroy = ata_scsi_slave_destroy,
307 .bios_param = ata_std_bios_param,
311 * Configuration for HPT366/68
314 static struct ata_port_operations hpt366_port_ops = {
315 .set_piomode = hpt366_set_piomode,
316 .set_dmamode = hpt366_set_dmamode,
317 .mode_filter = hpt366_filter,
319 .tf_load = ata_tf_load,
320 .tf_read = ata_tf_read,
321 .check_status = ata_check_status,
322 .exec_command = ata_exec_command,
323 .dev_select = ata_std_dev_select,
325 .freeze = ata_bmdma_freeze,
326 .thaw = ata_bmdma_thaw,
327 .error_handler = ata_bmdma_error_handler,
328 .post_internal_cmd = ata_bmdma_post_internal_cmd,
329 .cable_detect = hpt36x_cable_detect,
331 .bmdma_setup = ata_bmdma_setup,
332 .bmdma_start = ata_bmdma_start,
333 .bmdma_stop = ata_bmdma_stop,
334 .bmdma_status = ata_bmdma_status,
336 .qc_prep = ata_qc_prep,
337 .qc_issue = ata_qc_issue_prot,
339 .data_xfer = ata_data_xfer,
341 .irq_handler = ata_interrupt,
342 .irq_clear = ata_bmdma_irq_clear,
343 .irq_on = ata_irq_on,
345 .port_start = ata_sff_port_start,
349 * hpt36x_init_chipset - common chip setup
352 * Perform the chip setup work that must be done at both init and
356 static void hpt36x_init_chipset(struct pci_dev *dev)
359 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
360 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
361 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
362 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
364 pci_read_config_byte(dev, 0x51, &drive_fast);
365 if (drive_fast & 0x80)
366 pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
370 * hpt36x_init_one - Initialise an HPT366/368
372 * @id: Entry in match table
374 * Initialise an HPT36x device. There are some interesting complications
375 * here. Firstly the chip may report 366 and be one of several variants.
376 * Secondly all the timings depend on the clock for the chip which we must
379 * This is the known chip mappings. It may be missing a couple of later
382 * Chip version PCI Rev Notes
383 * HPT366 4 (HPT366) 0 UDMA66
384 * HPT366 4 (HPT366) 1 UDMA66
385 * HPT368 4 (HPT366) 2 UDMA66
386 * HPT37x/30x 4 (HPT366) 3+ Other driver
390 static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
392 static const struct ata_port_info info_hpt366 = {
394 .flags = ATA_FLAG_SLAVE_POSS,
397 .udma_mask = ATA_UDMA4,
398 .port_ops = &hpt366_port_ops
400 struct ata_port_info info = info_hpt366;
401 const struct ata_port_info *ppi[] = { &info, NULL };
406 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
409 /* May be a later chip in disguise. Check */
410 /* Newer chips are not in the HPT36x driver. Ignore them */
414 hpt36x_init_chipset(dev);
416 pci_read_config_dword(dev, 0x40, ®1);
418 /* PCI clocking determines the ATA timing values to use */
419 /* info_hpt366 is safe against re-entry so we can scribble on it */
420 switch((reg1 & 0x700) >> 8) {
422 info.private_data = &hpt366_40;
425 info.private_data = &hpt366_25;
428 info.private_data = &hpt366_33;
431 /* Now kick off ATA set up */
432 return ata_pci_init_one(dev, ppi);
436 static int hpt36x_reinit_one(struct pci_dev *dev)
438 hpt36x_init_chipset(dev);
439 return ata_pci_device_resume(dev);
443 static const struct pci_device_id hpt36x[] = {
444 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
448 static struct pci_driver hpt36x_pci_driver = {
451 .probe = hpt36x_init_one,
452 .remove = ata_pci_remove_one,
454 .suspend = ata_pci_device_suspend,
455 .resume = hpt36x_reinit_one,
459 static int __init hpt36x_init(void)
461 return pci_register_driver(&hpt36x_pci_driver);
464 static void __exit hpt36x_exit(void)
466 pci_unregister_driver(&hpt36x_pci_driver);
469 MODULE_AUTHOR("Alan Cox");
470 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
471 MODULE_LICENSE("GPL");
472 MODULE_DEVICE_TABLE(pci, hpt36x);
473 MODULE_VERSION(DRV_VERSION);
475 module_init(hpt36x_init);
476 module_exit(hpt36x_exit);