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"
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)
226 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
228 pci_read_config_byte(pdev, 0x5A, &ata66);
229 if (ata66 & (1 << ap->port_no))
230 ap->cbl = ATA_CBL_PATA40;
232 ap->cbl = ATA_CBL_PATA80;
233 return ata_std_prereset(ap);
237 * hpt36x_error_handler - reset the hpt36x bus
238 * @ap: ATA port to reset
240 * Perform the reset handling for the 366/368
243 static void hpt36x_error_handler(struct ata_port *ap)
245 ata_bmdma_drive_eh(ap, hpt36x_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
249 * hpt366_set_piomode - PIO setup
251 * @adev: device on the interface
253 * Perform PIO mode setup.
256 static void hpt366_set_piomode(struct ata_port *ap, struct ata_device *adev)
258 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
264 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
265 addr2 = 0x51 + 4 * ap->port_no;
267 /* Fast interrupt prediction disable, hold off interrupt disable */
268 pci_read_config_byte(pdev, addr2, &fast);
271 pci_write_config_byte(pdev, addr2, fast);
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);
283 * hpt366_set_dmamode - DMA timing setup
285 * @adev: Device being configured
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.
291 static void hpt366_set_dmamode(struct ata_port *ap, struct ata_device *adev)
293 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
299 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
300 addr2 = 0x51 + 4 * ap->port_no;
302 /* Fast interrupt prediction disable, hold off interrupt disable */
303 pci_read_config_byte(pdev, addr2, &fast);
306 pci_write_config_byte(pdev, addr2, fast);
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);
317 static struct scsi_host_template hpt36x_sht = {
318 .module = THIS_MODULE,
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,
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_pio_data_xfer,
366 .irq_handler = ata_interrupt,
367 .irq_clear = ata_bmdma_irq_clear,
369 .port_start = ata_port_start,
370 .port_stop = ata_port_stop,
371 .host_stop = ata_host_stop
375 * hpt36x_init_one - Initialise an HPT366/368
377 * @id: Entry in match table
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
384 * This is the known chip mappings. It may be missing a couple of later
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
395 static int hpt36x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
397 static struct ata_port_info info_hpt366 = {
399 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
403 .port_ops = &hpt366_port_ops
405 struct ata_port_info *port_info[2] = {&info_hpt366, &info_hpt366};
411 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
414 /* May be a later chip in disguise. Check */
415 /* Newer chips are not in the HPT36x driver. Ignore them */
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);
424 pci_read_config_byte(dev, 0x51, &drive_fast);
425 if (drive_fast & 0x80)
426 pci_write_config_byte(dev, 0x51, drive_fast & ~0x80);
428 pci_read_config_dword(dev, 0x40, ®1);
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) {
434 info_hpt366.private_data = &hpt366_40;
437 info_hpt366.private_data = &hpt366_25;
440 info_hpt366.private_data = &hpt366_33;
443 /* Now kick off ATA set up */
444 return ata_pci_init_one(dev, port_info, 2);
447 static struct pci_device_id hpt36x[] = {
448 { PCI_DEVICE(PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT366), },
452 static struct pci_driver hpt36x_pci_driver = {
455 .probe = hpt36x_init_one,
456 .remove = ata_pci_remove_one
459 static int __init hpt36x_init(void)
461 return pci_register_driver(&hpt36x_pci_driver);
465 static void __exit hpt36x_exit(void)
467 pci_unregister_driver(&hpt36x_pci_driver);
471 MODULE_AUTHOR("Alan Cox");
472 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT366/368");
473 MODULE_LICENSE("GPL");
474 MODULE_DEVICE_TABLE(pci, hpt36x);
475 MODULE_VERSION(DRV_VERSION);
477 module_init(hpt36x_init);
478 module_exit(hpt36x_exit);