1 // SPDX-License-Identifier: GPL-2.0-only
3 * Libata driver for the highpoint 37x and 30x UDMA66 ATA controllers.
5 * This driver is heavily based upon:
7 * linux/drivers/ide/pci/hpt366.c Version 0.36 April 25, 2003
9 * Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org>
10 * Portions Copyright (C) 2001 Sun Microsystems, Inc.
11 * Portions Copyright (C) 2003 Red Hat Inc
12 * Portions Copyright (C) 2005-2010 MontaVista Software, Inc.
15 * Look into engine reset on timeout errors. Should not be required.
17 #include <linux/kernel.h>
18 #include <linux/module.h>
19 #include <linux/pci.h>
20 #include <linux/blkdev.h>
21 #include <linux/delay.h>
22 #include <scsi/scsi_host.h>
23 #include <linux/libata.h>
25 #define DRV_NAME "pata_hpt37x"
26 #define DRV_VERSION "0.6.25"
36 struct hpt_clock const *clocks[4];
39 /* key for bus clock timings
41 * 0:3 data_high_time. Inactive time of DIOW_/DIOR_ for PIO and MW DMA.
43 * 4:8 data_low_time. Active time of DIOW_/DIOR_ for PIO and MW DMA.
45 * 9:12 cmd_high_time. Inactive time of DIOW_/DIOR_ during task file
47 * 13:17 cmd_low_time. Active time of DIOW_/DIOR_ during task file
49 * 18:20 udma_cycle_time. Clock cycles for UDMA xfer.
50 * 21 CLK frequency for UDMA: 0=ATA clock, 1=dual ATA clock.
51 * 22:24 pre_high_time. Time to initialize 1st cycle for PIO and MW DMA xfer.
52 * 25:27 cmd_pre_high_time. Time to initialize 1st PIO cycle for task file
56 * 30 PIO_MST enable. If set, the chip is in bus master mode during
58 * 31 FIFO enable. Only for PIO.
61 static struct hpt_clock hpt37x_timings_33[] = {
62 { XFER_UDMA_6, 0x12446231 }, /* 0x12646231 ?? */
63 { XFER_UDMA_5, 0x12446231 },
64 { XFER_UDMA_4, 0x12446231 },
65 { XFER_UDMA_3, 0x126c6231 },
66 { XFER_UDMA_2, 0x12486231 },
67 { XFER_UDMA_1, 0x124c6233 },
68 { XFER_UDMA_0, 0x12506297 },
70 { XFER_MW_DMA_2, 0x22406c31 },
71 { XFER_MW_DMA_1, 0x22406c33 },
72 { XFER_MW_DMA_0, 0x22406c97 },
74 { XFER_PIO_4, 0x06414e31 },
75 { XFER_PIO_3, 0x06414e42 },
76 { XFER_PIO_2, 0x06414e53 },
77 { XFER_PIO_1, 0x06814e93 },
78 { XFER_PIO_0, 0x06814ea7 }
81 static struct hpt_clock hpt37x_timings_50[] = {
82 { XFER_UDMA_6, 0x12848242 },
83 { XFER_UDMA_5, 0x12848242 },
84 { XFER_UDMA_4, 0x12ac8242 },
85 { XFER_UDMA_3, 0x128c8242 },
86 { XFER_UDMA_2, 0x120c8242 },
87 { XFER_UDMA_1, 0x12148254 },
88 { XFER_UDMA_0, 0x121882ea },
90 { XFER_MW_DMA_2, 0x22808242 },
91 { XFER_MW_DMA_1, 0x22808254 },
92 { XFER_MW_DMA_0, 0x228082ea },
94 { XFER_PIO_4, 0x0a81f442 },
95 { XFER_PIO_3, 0x0a81f443 },
96 { XFER_PIO_2, 0x0a81f454 },
97 { XFER_PIO_1, 0x0ac1f465 },
98 { XFER_PIO_0, 0x0ac1f48a }
101 static struct hpt_clock hpt37x_timings_66[] = {
102 { XFER_UDMA_6, 0x1c869c62 },
103 { XFER_UDMA_5, 0x1cae9c62 }, /* 0x1c8a9c62 */
104 { XFER_UDMA_4, 0x1c8a9c62 },
105 { XFER_UDMA_3, 0x1c8e9c62 },
106 { XFER_UDMA_2, 0x1c929c62 },
107 { XFER_UDMA_1, 0x1c9a9c62 },
108 { XFER_UDMA_0, 0x1c829c62 },
110 { XFER_MW_DMA_2, 0x2c829c62 },
111 { XFER_MW_DMA_1, 0x2c829c66 },
112 { XFER_MW_DMA_0, 0x2c829d2e },
114 { XFER_PIO_4, 0x0c829c62 },
115 { XFER_PIO_3, 0x0c829c84 },
116 { XFER_PIO_2, 0x0c829ca6 },
117 { XFER_PIO_1, 0x0d029d26 },
118 { XFER_PIO_0, 0x0d029d5e }
122 static const struct hpt_chip hpt370 = {
133 static const struct hpt_chip hpt370a = {
144 static const struct hpt_chip hpt372 = {
155 static const struct hpt_chip hpt302 = {
166 static const struct hpt_chip hpt371 = {
177 static const struct hpt_chip hpt372a = {
188 static const struct hpt_chip hpt374 = {
200 * hpt37x_find_mode - reset the hpt37x bus
202 * @speed: transfer mode
204 * Return the 32bit register programming information for this channel
205 * that matches the speed provided.
208 static u32 hpt37x_find_mode(struct ata_port *ap, int speed)
210 struct hpt_clock *clocks = ap->host->private_data;
212 while (clocks->xfer_speed) {
213 if (clocks->xfer_speed == speed)
214 return clocks->timing;
218 return 0xffffffffU; /* silence compiler warning */
221 static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr,
222 const char * const list[])
224 unsigned char model_num[ATA_ID_PROD_LEN + 1];
227 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
229 i = match_string(list, -1, model_num);
231 ata_dev_warn(dev, "%s is not supported for %s\n",
238 static const char * const bad_ata33[] = {
239 "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3",
240 "Maxtor 90845U3", "Maxtor 90650U2",
241 "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5",
242 "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
243 "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6",
244 "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
246 "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
247 "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7",
248 "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
249 "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5",
250 "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
254 static const char * const bad_ata100_5[] = {
274 * hpt370_filter - mode selection filter
278 * Block UDMA on devices that cause trouble with this controller.
281 static unsigned long hpt370_filter(struct ata_device *adev, unsigned long mask)
283 if (adev->class == ATA_DEV_ATA) {
284 if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
285 mask &= ~ATA_MASK_UDMA;
286 if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5))
287 mask &= ~(0xE0 << ATA_SHIFT_UDMA);
293 * hpt370a_filter - mode selection filter
297 * Block UDMA on devices that cause trouble with this controller.
300 static unsigned long hpt370a_filter(struct ata_device *adev, unsigned long mask)
302 if (adev->class == ATA_DEV_ATA) {
303 if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5))
304 mask &= ~(0xE0 << ATA_SHIFT_UDMA);
310 * hpt372_filter - mode selection filter
314 * The Marvell bridge chips used on the HighPoint SATA cards do not seem
315 * to support the UltraDMA modes 1, 2, and 3 as well as any MWDMA modes...
317 static unsigned long hpt372_filter(struct ata_device *adev, unsigned long mask)
319 if (ata_id_is_sata(adev->id))
320 mask &= ~((0xE << ATA_SHIFT_UDMA) | ATA_MASK_MWDMA);
326 * hpt37x_cable_detect - Detect the cable type
327 * @ap: ATA port to detect on
329 * Return the cable type attached to this port
332 static int hpt37x_cable_detect(struct ata_port *ap)
334 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
337 pci_read_config_byte(pdev, 0x5B, &scr2);
338 pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01);
340 udelay(10); /* debounce */
342 /* Cable register now active */
343 pci_read_config_byte(pdev, 0x5A, &ata66);
345 pci_write_config_byte(pdev, 0x5B, scr2);
347 if (ata66 & (2 >> ap->port_no))
348 return ATA_CBL_PATA40;
350 return ATA_CBL_PATA80;
354 * hpt374_fn1_cable_detect - Detect the cable type
355 * @ap: ATA port to detect on
357 * Return the cable type attached to this port
360 static int hpt374_fn1_cable_detect(struct ata_port *ap)
362 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
363 unsigned int mcrbase = 0x50 + 4 * ap->port_no;
367 /* Do the extra channel work */
368 pci_read_config_word(pdev, mcrbase + 2, &mcr3);
369 /* Set bit 15 of 0x52 to enable TCBLID as input */
370 pci_write_config_word(pdev, mcrbase + 2, mcr3 | 0x8000);
371 pci_read_config_byte(pdev, 0x5A, &ata66);
372 /* Reset TCBLID/FCBLID to output */
373 pci_write_config_word(pdev, mcrbase + 2, mcr3);
375 if (ata66 & (2 >> ap->port_no))
376 return ATA_CBL_PATA40;
378 return ATA_CBL_PATA80;
382 * hpt37x_pre_reset - reset the hpt37x bus
383 * @link: ATA link to reset
384 * @deadline: deadline jiffies for the operation
386 * Perform the initial reset handling for the HPT37x.
389 static int hpt37x_pre_reset(struct ata_link *link, unsigned long deadline)
391 struct ata_port *ap = link->ap;
392 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
393 static const struct pci_bits hpt37x_enable_bits[] = {
394 { 0x50, 1, 0x04, 0x04 },
395 { 0x54, 1, 0x04, 0x04 }
399 if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
402 /* Reset the state machine */
403 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
407 * Disable the "fast interrupt" prediction. Don't hold off
408 * on interrupts. (== 0x01 despite what the docs say)
410 pci_read_config_byte(pdev, 0x51 + 4 * ap->port_no, &mcr2);
411 /* Is it HPT370/A? */
412 if (pdev->device == PCI_DEVICE_ID_TTI_HPT366 && pdev->revision < 5) {
418 pci_write_config_byte(pdev, 0x51 + 4 * ap->port_no, mcr2);
420 return ata_sff_prereset(link, deadline);
423 static void hpt37x_set_mode(struct ata_port *ap, struct ata_device *adev,
426 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
427 int addr = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
428 u32 reg, timing, mask;
430 /* Determine timing mask and find matching mode entry */
431 if (mode < XFER_MW_DMA_0)
433 else if (mode < XFER_UDMA_0)
438 timing = hpt37x_find_mode(ap, mode);
440 pci_read_config_dword(pdev, addr, ®);
441 reg = (reg & ~mask) | (timing & mask);
442 pci_write_config_dword(pdev, addr, reg);
445 * hpt37x_set_piomode - PIO setup
447 * @adev: device on the interface
449 * Perform PIO mode setup.
452 static void hpt37x_set_piomode(struct ata_port *ap, struct ata_device *adev)
454 hpt37x_set_mode(ap, adev, adev->pio_mode);
458 * hpt37x_set_dmamode - DMA timing setup
460 * @adev: Device being configured
462 * Set up the channel for MWDMA or UDMA modes.
465 static void hpt37x_set_dmamode(struct ata_port *ap, struct ata_device *adev)
467 hpt37x_set_mode(ap, adev, adev->dma_mode);
471 * hpt370_bmdma_stop - DMA engine stop
474 * Work around the HPT370 DMA engine.
477 static void hpt370_bmdma_stop(struct ata_queued_cmd *qc)
479 struct ata_port *ap = qc->ap;
480 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
481 void __iomem *bmdma = ap->ioaddr.bmdma_addr;
482 u8 dma_stat = ioread8(bmdma + ATA_DMA_STATUS);
485 if (dma_stat & ATA_DMA_ACTIVE) {
487 dma_stat = ioread8(bmdma + ATA_DMA_STATUS);
489 if (dma_stat & ATA_DMA_ACTIVE) {
490 /* Clear the engine */
491 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
494 dma_cmd = ioread8(bmdma + ATA_DMA_CMD);
495 iowrite8(dma_cmd & ~ATA_DMA_START, bmdma + ATA_DMA_CMD);
497 dma_stat = ioread8(bmdma + ATA_DMA_STATUS);
498 iowrite8(dma_stat | ATA_DMA_INTR | ATA_DMA_ERR,
499 bmdma + ATA_DMA_STATUS);
500 /* Clear the engine */
501 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
508 * hpt37x_bmdma_stop - DMA engine stop
511 * Clean up after the HPT372 and later DMA engine
514 static void hpt37x_bmdma_stop(struct ata_queued_cmd *qc)
516 struct ata_port *ap = qc->ap;
517 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
518 int mscreg = 0x50 + 4 * ap->port_no;
519 u8 bwsr_stat, msc_stat;
521 pci_read_config_byte(pdev, 0x6A, &bwsr_stat);
522 pci_read_config_byte(pdev, mscreg, &msc_stat);
523 if (bwsr_stat & (1 << ap->port_no))
524 pci_write_config_byte(pdev, mscreg, msc_stat | 0x30);
529 static struct scsi_host_template hpt37x_sht = {
530 ATA_BMDMA_SHT(DRV_NAME),
534 * Configuration for HPT370
537 static struct ata_port_operations hpt370_port_ops = {
538 .inherits = &ata_bmdma_port_ops,
540 .bmdma_stop = hpt370_bmdma_stop,
542 .mode_filter = hpt370_filter,
543 .cable_detect = hpt37x_cable_detect,
544 .set_piomode = hpt37x_set_piomode,
545 .set_dmamode = hpt37x_set_dmamode,
546 .prereset = hpt37x_pre_reset,
550 * Configuration for HPT370A. Close to 370 but less filters
553 static struct ata_port_operations hpt370a_port_ops = {
554 .inherits = &hpt370_port_ops,
555 .mode_filter = hpt370a_filter,
559 * Configuration for HPT371 and HPT302.
562 static struct ata_port_operations hpt302_port_ops = {
563 .inherits = &ata_bmdma_port_ops,
565 .bmdma_stop = hpt37x_bmdma_stop,
567 .cable_detect = hpt37x_cable_detect,
568 .set_piomode = hpt37x_set_piomode,
569 .set_dmamode = hpt37x_set_dmamode,
570 .prereset = hpt37x_pre_reset,
574 * Configuration for HPT372. Mode setting works like 371 and 302
575 * but we have a mode filter.
578 static struct ata_port_operations hpt372_port_ops = {
579 .inherits = &hpt302_port_ops,
580 .mode_filter = hpt372_filter,
584 * Configuration for HPT374. Mode setting and filtering works like 372
585 * but we have a different cable detection procedure for function 1.
588 static struct ata_port_operations hpt374_fn1_port_ops = {
589 .inherits = &hpt372_port_ops,
590 .cable_detect = hpt374_fn1_cable_detect,
594 * hpt37x_clock_slot - Turn timing to PC clock entry
595 * @freq: Reported frequency timing
598 * Turn the timing data intoa clock slot (0 for 33, 1 for 40, 2 for 50
602 static int hpt37x_clock_slot(unsigned int freq, unsigned int base)
604 unsigned int f = (base * freq) / 192; /* Mhz */
606 return 0; /* 33Mhz slot */
608 return 1; /* 40Mhz slot */
610 return 2; /* 50Mhz slot */
611 return 3; /* 60Mhz slot */
615 * hpt37x_calibrate_dpll - Calibrate the DPLL loop
618 * Perform a calibration cycle on the HPT37x DPLL. Returns 1 if this
622 static int hpt37x_calibrate_dpll(struct pci_dev *dev)
628 for (tries = 0; tries < 0x5000; tries++) {
630 pci_read_config_byte(dev, 0x5b, ®5b);
632 /* See if it stays set */
633 for (tries = 0; tries < 0x1000; tries++) {
634 pci_read_config_byte(dev, 0x5b, ®5b);
636 if ((reg5b & 0x80) == 0)
639 /* Turn off tuning, we have the DPLL set */
640 pci_read_config_dword(dev, 0x5c, ®5c);
641 pci_write_config_dword(dev, 0x5c, reg5c & ~0x100);
645 /* Never went stable */
649 static u32 hpt374_read_freq(struct pci_dev *pdev)
652 unsigned long io_base = pci_resource_start(pdev, 4);
654 if (PCI_FUNC(pdev->devfn) & 1) {
655 struct pci_dev *pdev_0;
657 pdev_0 = pci_get_slot(pdev->bus, pdev->devfn - 1);
658 /* Someone hot plugged the controller on us ? */
661 io_base = pci_resource_start(pdev_0, 4);
662 freq = inl(io_base + 0x90);
665 freq = inl(io_base + 0x90);
670 * hpt37x_init_one - Initialise an HPT37X/302
672 * @id: Entry in match table
674 * Initialise an HPT37x device. There are some interesting complications
675 * here. Firstly the chip may report 366 and be one of several variants.
676 * Secondly all the timings depend on the clock for the chip which we must
679 * This is the known chip mappings. It may be missing a couple of later
682 * Chip version PCI Rev Notes
683 * HPT366 4 (HPT366) 0 Other driver
684 * HPT366 4 (HPT366) 1 Other driver
685 * HPT368 4 (HPT366) 2 Other driver
686 * HPT370 4 (HPT366) 3 UDMA100
687 * HPT370A 4 (HPT366) 4 UDMA100
688 * HPT372 4 (HPT366) 5 UDMA133 (1)
689 * HPT372N 4 (HPT366) 6 Other driver
690 * HPT372A 5 (HPT372) 1 UDMA133 (1)
691 * HPT372N 5 (HPT372) 2 Other driver
692 * HPT302 6 (HPT302) 1 UDMA133
693 * HPT302N 6 (HPT302) 2 Other driver
694 * HPT371 7 (HPT371) * UDMA133
695 * HPT374 8 (HPT374) * UDMA133 4 channel
696 * HPT372N 9 (HPT372N) * Other driver
698 * (1) UDMA133 support depends on the bus clock
701 static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
703 /* HPT370 - UDMA100 */
704 static const struct ata_port_info info_hpt370 = {
705 .flags = ATA_FLAG_SLAVE_POSS,
706 .pio_mask = ATA_PIO4,
707 .mwdma_mask = ATA_MWDMA2,
708 .udma_mask = ATA_UDMA5,
709 .port_ops = &hpt370_port_ops
711 /* HPT370A - UDMA100 */
712 static const struct ata_port_info info_hpt370a = {
713 .flags = ATA_FLAG_SLAVE_POSS,
714 .pio_mask = ATA_PIO4,
715 .mwdma_mask = ATA_MWDMA2,
716 .udma_mask = ATA_UDMA5,
717 .port_ops = &hpt370a_port_ops
719 /* HPT370 - UDMA66 */
720 static const struct ata_port_info info_hpt370_33 = {
721 .flags = ATA_FLAG_SLAVE_POSS,
722 .pio_mask = ATA_PIO4,
723 .mwdma_mask = ATA_MWDMA2,
724 .udma_mask = ATA_UDMA4,
725 .port_ops = &hpt370_port_ops
727 /* HPT370A - UDMA66 */
728 static const struct ata_port_info info_hpt370a_33 = {
729 .flags = ATA_FLAG_SLAVE_POSS,
730 .pio_mask = ATA_PIO4,
731 .mwdma_mask = ATA_MWDMA2,
732 .udma_mask = ATA_UDMA4,
733 .port_ops = &hpt370a_port_ops
735 /* HPT372 - UDMA133 */
736 static const struct ata_port_info info_hpt372 = {
737 .flags = ATA_FLAG_SLAVE_POSS,
738 .pio_mask = ATA_PIO4,
739 .mwdma_mask = ATA_MWDMA2,
740 .udma_mask = ATA_UDMA6,
741 .port_ops = &hpt372_port_ops
743 /* HPT371, 302 - UDMA133 */
744 static const struct ata_port_info info_hpt302 = {
745 .flags = ATA_FLAG_SLAVE_POSS,
746 .pio_mask = ATA_PIO4,
747 .mwdma_mask = ATA_MWDMA2,
748 .udma_mask = ATA_UDMA6,
749 .port_ops = &hpt302_port_ops
751 /* HPT374 - UDMA100, function 1 uses different cable_detect method */
752 static const struct ata_port_info info_hpt374_fn0 = {
753 .flags = ATA_FLAG_SLAVE_POSS,
754 .pio_mask = ATA_PIO4,
755 .mwdma_mask = ATA_MWDMA2,
756 .udma_mask = ATA_UDMA5,
757 .port_ops = &hpt372_port_ops
759 static const struct ata_port_info info_hpt374_fn1 = {
760 .flags = ATA_FLAG_SLAVE_POSS,
761 .pio_mask = ATA_PIO4,
762 .mwdma_mask = ATA_MWDMA2,
763 .udma_mask = ATA_UDMA5,
764 .port_ops = &hpt374_fn1_port_ops
767 static const int MHz[4] = { 33, 40, 50, 66 };
768 void *private_data = NULL;
769 const struct ata_port_info *ppi[] = { NULL, NULL };
770 u8 rev = dev->revision;
776 unsigned long iobase = pci_resource_start(dev, 4);
778 const struct hpt_chip *chip_table;
782 rc = pcim_enable_device(dev);
786 switch (dev->device) {
787 case PCI_DEVICE_ID_TTI_HPT366:
788 /* May be a later chip in disguise. Check */
789 /* Older chips are in the HPT366 driver. Ignore them */
792 /* N series chips have their own driver. Ignore */
798 ppi[0] = &info_hpt370;
799 chip_table = &hpt370;
803 ppi[0] = &info_hpt370a;
804 chip_table = &hpt370a;
808 ppi[0] = &info_hpt372;
809 chip_table = &hpt372;
813 "Unknown HPT366 subtype, please report (%d)\n",
818 case PCI_DEVICE_ID_TTI_HPT372:
819 /* 372N if rev >= 2 */
822 ppi[0] = &info_hpt372;
823 chip_table = &hpt372a;
825 case PCI_DEVICE_ID_TTI_HPT302:
826 /* 302N if rev > 1 */
829 ppi[0] = &info_hpt302;
831 chip_table = &hpt302;
833 case PCI_DEVICE_ID_TTI_HPT371:
836 ppi[0] = &info_hpt302;
837 chip_table = &hpt371;
839 * Single channel device, master is not present but the BIOS
840 * (or us for non x86) must mark it absent
842 pci_read_config_byte(dev, 0x50, &mcr1);
844 pci_write_config_byte(dev, 0x50, mcr1);
846 case PCI_DEVICE_ID_TTI_HPT374:
847 chip_table = &hpt374;
848 if (!(PCI_FUNC(dev->devfn) & 1))
849 *ppi = &info_hpt374_fn0;
851 *ppi = &info_hpt374_fn1;
854 dev_err(&dev->dev, "PCI table is bogus, please report (%d)\n",
858 /* Ok so this is a chip we support */
860 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
861 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
862 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
863 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
865 pci_read_config_byte(dev, 0x5A, &irqmask);
867 pci_write_config_byte(dev, 0x5a, irqmask);
870 * HPT371 chips physically have only one channel, the secondary one,
871 * but the primary channel registers do exist! Go figure...
872 * So, we manually disable the non-existing channel here
873 * (if the BIOS hasn't done this already).
875 if (dev->device == PCI_DEVICE_ID_TTI_HPT371) {
878 pci_read_config_byte(dev, 0x50, &mcr1);
880 pci_write_config_byte(dev, 0x50, mcr1);
884 * default to pci clock. make sure MA15/16 are set to output
885 * to prevent drives having problems with 40-pin cables. Needed
886 * for some drives such as IBM-DTLA which will not enter ready
887 * state on reset when PDIAG is a input.
890 pci_write_config_byte(dev, 0x5b, 0x23);
893 * HighPoint does this for HPT372A.
894 * NOTE: This register is only writeable via I/O space.
896 if (chip_table == &hpt372a)
897 outb(0x0e, iobase + 0x9c);
900 * Some devices do not let this value be accessed via PCI space
901 * according to the old driver. In addition we must use the value
902 * from FN 0 on the HPT374.
905 if (chip_table == &hpt374) {
906 freq = hpt374_read_freq(dev);
910 freq = inl(iobase + 0x90);
912 if ((freq >> 12) != 0xABCDE) {
917 dev_warn(&dev->dev, "BIOS has not set timing clocks\n");
919 /* This is the process the HPT371 BIOS is reported to use */
920 for (i = 0; i < 128; i++) {
921 pci_read_config_word(dev, 0x78, &sr);
930 * Turn the frequency check into a band and then find a timing
934 clock_slot = hpt37x_clock_slot(freq, chip_table->base);
935 if (chip_table->clocks[clock_slot] == NULL || prefer_dpll) {
937 * We need to try PLL mode instead
939 * For non UDMA133 capable devices we should
940 * use a 50MHz DPLL by choice
942 unsigned int f_low, f_high;
946 dpll = (ppi[0]->udma_mask & 0xC0) ? 3 : 2;
948 f_low = (MHz[clock_slot] * 48) / MHz[dpll];
953 /* Select the DPLL clock. */
954 pci_write_config_byte(dev, 0x5b, 0x21);
955 pci_write_config_dword(dev, 0x5C,
956 (f_high << 16) | f_low | 0x100);
958 for (adjust = 0; adjust < 8; adjust++) {
959 if (hpt37x_calibrate_dpll(dev))
962 * See if it'll settle at a fractionally
966 f_low -= adjust >> 1;
968 f_high += adjust >> 1;
969 pci_write_config_dword(dev, 0x5C,
970 (f_high << 16) | f_low | 0x100);
973 dev_err(&dev->dev, "DPLL did not stabilize!\n");
977 private_data = (void *)hpt37x_timings_66;
979 private_data = (void *)hpt37x_timings_50;
981 dev_info(&dev->dev, "bus clock %dMHz, using %dMHz DPLL\n",
982 MHz[clock_slot], MHz[dpll]);
984 private_data = (void *)chip_table->clocks[clock_slot];
986 * Perform a final fixup. Note that we will have used the
987 * DPLL on the HPT372 which means we don't have to worry
988 * about lack of UDMA133 support on lower clocks
991 if (clock_slot < 2 && ppi[0] == &info_hpt370)
992 ppi[0] = &info_hpt370_33;
993 if (clock_slot < 2 && ppi[0] == &info_hpt370a)
994 ppi[0] = &info_hpt370a_33;
996 dev_info(&dev->dev, "%s using %dMHz bus clock\n",
997 chip_table->name, MHz[clock_slot]);
1000 /* Now kick off ATA set up */
1001 return ata_pci_bmdma_init_one(dev, ppi, &hpt37x_sht, private_data, 0);
1004 static const struct pci_device_id hpt37x[] = {
1005 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
1006 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT371), },
1007 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT372), },
1008 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT374), },
1009 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT302), },
1014 static struct pci_driver hpt37x_pci_driver = {
1017 .probe = hpt37x_init_one,
1018 .remove = ata_pci_remove_one
1021 module_pci_driver(hpt37x_pci_driver);
1023 MODULE_AUTHOR("Alan Cox");
1024 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT37x/30x");
1025 MODULE_LICENSE("GPL");
1026 MODULE_DEVICE_TABLE(pci, hpt37x);
1027 MODULE_VERSION(DRV_VERSION);