2 * Libata driver for the highpoint 37x and 30x 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
11 * Portions Copyright (C) 2005-2009 MontaVista Software, Inc.
14 * 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/init.h>
21 #include <linux/blkdev.h>
22 #include <linux/delay.h>
23 #include <scsi/scsi_host.h>
24 #include <linux/libata.h>
26 #define DRV_NAME "pata_hpt37x"
27 #define DRV_VERSION "0.6.12"
37 struct hpt_clock const *clocks[4];
40 /* key for bus clock timings
42 * 0:3 data_high_time. inactive time of DIOW_/DIOR_ for PIO and MW
43 * DMA. cycles = value + 1
44 * 4:8 data_low_time. active time of DIOW_/DIOR_ for PIO and MW
45 * DMA. cycles = value + 1
46 * 9:12 cmd_high_time. inactive time of DIOW_/DIOR_ during task file
48 * 13:17 cmd_low_time. active time of DIOW_/DIOR_ during task file
50 * 18:21 udma_cycle_time. clock freq and clock cycles for UDMA xfer.
51 * during task file register access.
52 * 22:24 pre_high_time. time to initialize 1st cycle for PIO and MW DMA
54 * 25:27 cmd_pre_high_time. time to initialize 1st PIO cycle for task
58 * 30 PIO_MST enable. if set, the chip is in bus master mode during
63 static struct hpt_clock hpt37x_timings_33[] = {
64 { XFER_UDMA_6, 0x12446231 }, /* 0x12646231 ?? */
65 { XFER_UDMA_5, 0x12446231 },
66 { XFER_UDMA_4, 0x12446231 },
67 { XFER_UDMA_3, 0x126c6231 },
68 { XFER_UDMA_2, 0x12486231 },
69 { XFER_UDMA_1, 0x124c6233 },
70 { XFER_UDMA_0, 0x12506297 },
72 { XFER_MW_DMA_2, 0x22406c31 },
73 { XFER_MW_DMA_1, 0x22406c33 },
74 { XFER_MW_DMA_0, 0x22406c97 },
76 { XFER_PIO_4, 0x06414e31 },
77 { XFER_PIO_3, 0x06414e42 },
78 { XFER_PIO_2, 0x06414e53 },
79 { XFER_PIO_1, 0x06814e93 },
80 { XFER_PIO_0, 0x06814ea7 }
83 static struct hpt_clock hpt37x_timings_50[] = {
84 { XFER_UDMA_6, 0x12848242 },
85 { XFER_UDMA_5, 0x12848242 },
86 { XFER_UDMA_4, 0x12ac8242 },
87 { XFER_UDMA_3, 0x128c8242 },
88 { XFER_UDMA_2, 0x120c8242 },
89 { XFER_UDMA_1, 0x12148254 },
90 { XFER_UDMA_0, 0x121882ea },
92 { XFER_MW_DMA_2, 0x22808242 },
93 { XFER_MW_DMA_1, 0x22808254 },
94 { XFER_MW_DMA_0, 0x228082ea },
96 { XFER_PIO_4, 0x0a81f442 },
97 { XFER_PIO_3, 0x0a81f443 },
98 { XFER_PIO_2, 0x0a81f454 },
99 { XFER_PIO_1, 0x0ac1f465 },
100 { XFER_PIO_0, 0x0ac1f48a }
103 static struct hpt_clock hpt37x_timings_66[] = {
104 { XFER_UDMA_6, 0x1c869c62 },
105 { XFER_UDMA_5, 0x1cae9c62 }, /* 0x1c8a9c62 */
106 { XFER_UDMA_4, 0x1c8a9c62 },
107 { XFER_UDMA_3, 0x1c8e9c62 },
108 { XFER_UDMA_2, 0x1c929c62 },
109 { XFER_UDMA_1, 0x1c9a9c62 },
110 { XFER_UDMA_0, 0x1c829c62 },
112 { XFER_MW_DMA_2, 0x2c829c62 },
113 { XFER_MW_DMA_1, 0x2c829c66 },
114 { XFER_MW_DMA_0, 0x2c829d2e },
116 { XFER_PIO_4, 0x0c829c62 },
117 { XFER_PIO_3, 0x0c829c84 },
118 { XFER_PIO_2, 0x0c829ca6 },
119 { XFER_PIO_1, 0x0d029d26 },
120 { XFER_PIO_0, 0x0d029d5e }
124 static const struct hpt_chip hpt370 = {
135 static const struct hpt_chip hpt370a = {
146 static const struct hpt_chip hpt372 = {
157 static const struct hpt_chip hpt302 = {
168 static const struct hpt_chip hpt371 = {
179 static const struct hpt_chip hpt372a = {
190 static const struct hpt_chip hpt374 = {
202 * hpt37x_find_mode - reset the hpt37x bus
204 * @speed: transfer mode
206 * Return the 32bit register programming information for this channel
207 * that matches the speed provided.
210 static u32 hpt37x_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 hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, const char *list[])
225 unsigned char model_num[ATA_ID_PROD_LEN + 1];
228 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
230 while (list[i] != NULL) {
231 if (!strcmp(list[i], model_num)) {
232 printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n",
241 static const char *bad_ata33[] = {
242 "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", "Maxtor 90845U3", "Maxtor 90650U2",
243 "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
244 "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
246 "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
247 "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
248 "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
252 static const char *bad_ata100_5[] = {
272 * hpt370_filter - mode selection filter
275 * Block UDMA on devices that cause trouble with this controller.
278 static unsigned long hpt370_filter(struct ata_device *adev, unsigned long mask)
280 if (adev->class == ATA_DEV_ATA) {
281 if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
282 mask &= ~ATA_MASK_UDMA;
283 if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5))
284 mask &= ~(0xE0 << ATA_SHIFT_UDMA);
286 return ata_bmdma_mode_filter(adev, mask);
290 * hpt370a_filter - mode selection filter
293 * Block UDMA on devices that cause trouble with this controller.
296 static unsigned long hpt370a_filter(struct ata_device *adev, unsigned long mask)
298 if (adev->class == ATA_DEV_ATA) {
299 if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5))
300 mask &= ~(0xE0 << ATA_SHIFT_UDMA);
302 return ata_bmdma_mode_filter(adev, mask);
306 * hpt37x_pre_reset - reset the hpt37x bus
307 * @link: ATA link to reset
308 * @deadline: deadline jiffies for the operation
310 * Perform the initial reset handling for the 370/372 and 374 func 0
313 static int hpt37x_pre_reset(struct ata_link *link, unsigned long deadline)
316 struct ata_port *ap = link->ap;
317 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
318 static const struct pci_bits hpt37x_enable_bits[] = {
319 { 0x50, 1, 0x04, 0x04 },
320 { 0x54, 1, 0x04, 0x04 }
322 if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
325 pci_read_config_byte(pdev, 0x5B, &scr2);
326 pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01);
327 /* Cable register now active */
328 pci_read_config_byte(pdev, 0x5A, &ata66);
330 pci_write_config_byte(pdev, 0x5B, scr2);
332 if (ata66 & (2 >> ap->port_no))
333 ap->cbl = ATA_CBL_PATA40;
335 ap->cbl = ATA_CBL_PATA80;
337 /* Reset the state machine */
338 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
341 return ata_sff_prereset(link, deadline);
344 static int hpt374_fn1_pre_reset(struct ata_link *link, unsigned long deadline)
346 static const struct pci_bits hpt37x_enable_bits[] = {
347 { 0x50, 1, 0x04, 0x04 },
348 { 0x54, 1, 0x04, 0x04 }
352 struct ata_port *ap = link->ap;
353 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
354 unsigned int mcrbase = 0x50 + 4 * ap->port_no;
356 if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
359 /* Do the extra channel work */
360 pci_read_config_word(pdev, mcrbase + 2, &mcr3);
361 /* Set bit 15 of 0x52 to enable TCBLID as input
363 pci_write_config_word(pdev, mcrbase + 2, mcr3 | 0x8000);
364 pci_read_config_byte(pdev, 0x5A, &ata66);
365 /* Reset TCBLID/FCBLID to output */
366 pci_write_config_word(pdev, mcrbase + 2, mcr3);
368 if (ata66 & (2 >> ap->port_no))
369 ap->cbl = ATA_CBL_PATA40;
371 ap->cbl = ATA_CBL_PATA80;
373 /* Reset the state machine */
374 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
377 return ata_sff_prereset(link, deadline);
381 * hpt370_set_piomode - PIO setup
383 * @adev: device on the interface
385 * Perform PIO mode setup.
388 static void hpt370_set_piomode(struct ata_port *ap, struct ata_device *adev)
390 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
396 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
397 addr2 = 0x51 + 4 * ap->port_no;
399 /* Fast interrupt prediction disable, hold off interrupt disable */
400 pci_read_config_byte(pdev, addr2, &fast);
403 pci_write_config_byte(pdev, addr2, fast);
405 pci_read_config_dword(pdev, addr1, ®);
406 mode = hpt37x_find_mode(ap, adev->pio_mode);
407 mode &= ~0x8000000; /* No FIFO in PIO */
408 mode &= ~0x30070000; /* Leave config bits alone */
409 reg &= 0x30070000; /* Strip timing bits */
410 pci_write_config_dword(pdev, addr1, reg | mode);
414 * hpt370_set_dmamode - DMA timing setup
416 * @adev: Device being configured
418 * Set up the channel for MWDMA or UDMA modes. Much the same as with
419 * PIO, load the mode number and then set MWDMA or UDMA flag.
422 static void hpt370_set_dmamode(struct ata_port *ap, struct ata_device *adev)
424 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
430 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
431 addr2 = 0x51 + 4 * ap->port_no;
433 /* Fast interrupt prediction disable, hold off interrupt disable */
434 pci_read_config_byte(pdev, addr2, &fast);
437 pci_write_config_byte(pdev, addr2, fast);
439 pci_read_config_dword(pdev, addr1, ®);
440 mode = hpt37x_find_mode(ap, adev->dma_mode);
441 mode |= 0x8000000; /* FIFO in MWDMA or UDMA */
442 mode &= ~0xC0000000; /* Leave config bits alone */
443 reg &= 0xC0000000; /* Strip timing bits */
444 pci_write_config_dword(pdev, addr1, reg | mode);
448 * hpt370_bmdma_end - DMA engine stop
451 * Work around the HPT370 DMA engine.
454 static void hpt370_bmdma_stop(struct ata_queued_cmd *qc)
456 struct ata_port *ap = qc->ap;
457 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
458 u8 dma_stat = ioread8(ap->ioaddr.bmdma_addr + 2);
460 void __iomem *bmdma = ap->ioaddr.bmdma_addr;
462 if (dma_stat & 0x01) {
464 dma_stat = ioread8(bmdma + 2);
466 if (dma_stat & 0x01) {
467 /* Clear the engine */
468 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
471 dma_cmd = ioread8(bmdma );
472 iowrite8(dma_cmd & 0xFE, bmdma);
474 dma_stat = ioread8(bmdma + 2);
475 iowrite8(dma_stat | 0x06 , bmdma + 2);
476 /* Clear the engine */
477 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
484 * hpt372_set_piomode - PIO setup
486 * @adev: device on the interface
488 * Perform PIO mode setup.
491 static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev)
493 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
499 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
500 addr2 = 0x51 + 4 * ap->port_no;
502 /* Fast interrupt prediction disable, hold off interrupt disable */
503 pci_read_config_byte(pdev, addr2, &fast);
505 pci_write_config_byte(pdev, addr2, fast);
507 pci_read_config_dword(pdev, addr1, ®);
508 mode = hpt37x_find_mode(ap, adev->pio_mode);
510 printk("Find mode for %d reports %X\n", adev->pio_mode, mode);
511 mode &= ~0x80000000; /* No FIFO in PIO */
512 mode &= ~0x30070000; /* Leave config bits alone */
513 reg &= 0x30070000; /* Strip timing bits */
514 pci_write_config_dword(pdev, addr1, reg | mode);
518 * hpt372_set_dmamode - DMA timing setup
520 * @adev: Device being configured
522 * Set up the channel for MWDMA or UDMA modes. Much the same as with
523 * PIO, load the mode number and then set MWDMA or UDMA flag.
526 static void hpt372_set_dmamode(struct ata_port *ap, struct ata_device *adev)
528 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
534 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
535 addr2 = 0x51 + 4 * ap->port_no;
537 /* Fast interrupt prediction disable, hold off interrupt disable */
538 pci_read_config_byte(pdev, addr2, &fast);
540 pci_write_config_byte(pdev, addr2, fast);
542 pci_read_config_dword(pdev, addr1, ®);
543 mode = hpt37x_find_mode(ap, adev->dma_mode);
544 printk("Find mode for DMA %d reports %X\n", adev->dma_mode, mode);
545 mode &= ~0xC0000000; /* Leave config bits alone */
546 mode |= 0x80000000; /* FIFO in MWDMA or UDMA */
547 reg &= 0xC0000000; /* Strip timing bits */
548 pci_write_config_dword(pdev, addr1, reg | mode);
552 * hpt37x_bmdma_end - DMA engine stop
555 * Clean up after the HPT372 and later DMA engine
558 static void hpt37x_bmdma_stop(struct ata_queued_cmd *qc)
560 struct ata_port *ap = qc->ap;
561 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
562 int mscreg = 0x50 + 4 * ap->port_no;
563 u8 bwsr_stat, msc_stat;
565 pci_read_config_byte(pdev, 0x6A, &bwsr_stat);
566 pci_read_config_byte(pdev, mscreg, &msc_stat);
567 if (bwsr_stat & (1 << ap->port_no))
568 pci_write_config_byte(pdev, mscreg, msc_stat | 0x30);
573 static struct scsi_host_template hpt37x_sht = {
574 ATA_BMDMA_SHT(DRV_NAME),
578 * Configuration for HPT370
581 static struct ata_port_operations hpt370_port_ops = {
582 .inherits = &ata_bmdma_port_ops,
584 .bmdma_stop = hpt370_bmdma_stop,
586 .mode_filter = hpt370_filter,
587 .set_piomode = hpt370_set_piomode,
588 .set_dmamode = hpt370_set_dmamode,
589 .prereset = hpt37x_pre_reset,
593 * Configuration for HPT370A. Close to 370 but less filters
596 static struct ata_port_operations hpt370a_port_ops = {
597 .inherits = &hpt370_port_ops,
598 .mode_filter = hpt370a_filter,
602 * Configuration for HPT372, HPT371, HPT302. Slightly different PIO
603 * and DMA mode setting functionality.
606 static struct ata_port_operations hpt372_port_ops = {
607 .inherits = &ata_bmdma_port_ops,
609 .bmdma_stop = hpt37x_bmdma_stop,
611 .set_piomode = hpt372_set_piomode,
612 .set_dmamode = hpt372_set_dmamode,
613 .prereset = hpt37x_pre_reset,
617 * Configuration for HPT374. Mode setting works like 372 and friends
618 * but we have a different cable detection procedure for function 1.
621 static struct ata_port_operations hpt374_fn1_port_ops = {
622 .inherits = &hpt372_port_ops,
623 .prereset = hpt374_fn1_pre_reset,
627 * htp37x_clock_slot - Turn timing to PC clock entry
628 * @freq: Reported frequency timing
631 * Turn the timing data intoa clock slot (0 for 33, 1 for 40, 2 for 50
635 static int hpt37x_clock_slot(unsigned int freq, unsigned int base)
637 unsigned int f = (base * freq) / 192; /* Mhz */
639 return 0; /* 33Mhz slot */
641 return 1; /* 40Mhz slot */
643 return 2; /* 50Mhz slot */
644 return 3; /* 60Mhz slot */
648 * hpt37x_calibrate_dpll - Calibrate the DPLL loop
651 * Perform a calibration cycle on the HPT37x DPLL. Returns 1 if this
655 static int hpt37x_calibrate_dpll(struct pci_dev *dev)
661 for(tries = 0; tries < 0x5000; tries++) {
663 pci_read_config_byte(dev, 0x5b, ®5b);
665 /* See if it stays set */
666 for(tries = 0; tries < 0x1000; tries ++) {
667 pci_read_config_byte(dev, 0x5b, ®5b);
669 if ((reg5b & 0x80) == 0)
672 /* Turn off tuning, we have the DPLL set */
673 pci_read_config_dword(dev, 0x5c, ®5c);
674 pci_write_config_dword(dev, 0x5c, reg5c & ~ 0x100);
678 /* Never went stable */
682 static u32 hpt374_read_freq(struct pci_dev *pdev)
685 unsigned long io_base = pci_resource_start(pdev, 4);
686 if (PCI_FUNC(pdev->devfn) & 1) {
687 struct pci_dev *pdev_0;
689 pdev_0 = pci_get_slot(pdev->bus, pdev->devfn - 1);
690 /* Someone hot plugged the controller on us ? */
693 io_base = pci_resource_start(pdev_0, 4);
694 freq = inl(io_base + 0x90);
697 freq = inl(io_base + 0x90);
702 * hpt37x_init_one - Initialise an HPT37X/302
704 * @id: Entry in match table
706 * Initialise an HPT37x device. There are some interesting complications
707 * here. Firstly the chip may report 366 and be one of several variants.
708 * Secondly all the timings depend on the clock for the chip which we must
711 * This is the known chip mappings. It may be missing a couple of later
714 * Chip version PCI Rev Notes
715 * HPT366 4 (HPT366) 0 Other driver
716 * HPT366 4 (HPT366) 1 Other driver
717 * HPT368 4 (HPT366) 2 Other driver
718 * HPT370 4 (HPT366) 3 UDMA100
719 * HPT370A 4 (HPT366) 4 UDMA100
720 * HPT372 4 (HPT366) 5 UDMA133 (1)
721 * HPT372N 4 (HPT366) 6 Other driver
722 * HPT372A 5 (HPT372) 1 UDMA133 (1)
723 * HPT372N 5 (HPT372) 2 Other driver
724 * HPT302 6 (HPT302) 1 UDMA133
725 * HPT302N 6 (HPT302) 2 Other driver
726 * HPT371 7 (HPT371) * UDMA133
727 * HPT374 8 (HPT374) * UDMA133 4 channel
728 * HPT372N 9 (HPT372N) * Other driver
730 * (1) UDMA133 support depends on the bus clock
733 static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
735 /* HPT370 - UDMA100 */
736 static const struct ata_port_info info_hpt370 = {
737 .flags = ATA_FLAG_SLAVE_POSS,
738 .pio_mask = ATA_PIO4,
739 .mwdma_mask = ATA_MWDMA2,
740 .udma_mask = ATA_UDMA5,
741 .port_ops = &hpt370_port_ops
743 /* HPT370A - UDMA100 */
744 static const struct ata_port_info info_hpt370a = {
745 .flags = ATA_FLAG_SLAVE_POSS,
746 .pio_mask = ATA_PIO4,
747 .mwdma_mask = ATA_MWDMA2,
748 .udma_mask = ATA_UDMA5,
749 .port_ops = &hpt370a_port_ops
751 /* HPT370 - UDMA100 */
752 static const struct ata_port_info info_hpt370_33 = {
753 .flags = ATA_FLAG_SLAVE_POSS,
754 .pio_mask = ATA_PIO4,
755 .mwdma_mask = ATA_MWDMA2,
756 .udma_mask = ATA_UDMA5,
757 .port_ops = &hpt370_port_ops
759 /* HPT370A - UDMA100 */
760 static const struct ata_port_info info_hpt370a_33 = {
761 .flags = ATA_FLAG_SLAVE_POSS,
762 .pio_mask = ATA_PIO4,
763 .mwdma_mask = ATA_MWDMA2,
764 .udma_mask = ATA_UDMA5,
765 .port_ops = &hpt370a_port_ops
767 /* HPT371, 372 and friends - UDMA133 */
768 static const struct ata_port_info info_hpt372 = {
769 .flags = ATA_FLAG_SLAVE_POSS,
770 .pio_mask = ATA_PIO4,
771 .mwdma_mask = ATA_MWDMA2,
772 .udma_mask = ATA_UDMA6,
773 .port_ops = &hpt372_port_ops
775 /* HPT374 - UDMA100, function 1 uses different prereset method */
776 static const struct ata_port_info info_hpt374_fn0 = {
777 .flags = ATA_FLAG_SLAVE_POSS,
778 .pio_mask = ATA_PIO4,
779 .mwdma_mask = ATA_MWDMA2,
780 .udma_mask = ATA_UDMA5,
781 .port_ops = &hpt372_port_ops
783 static const struct ata_port_info info_hpt374_fn1 = {
784 .flags = ATA_FLAG_SLAVE_POSS,
785 .pio_mask = ATA_PIO4,
786 .mwdma_mask = ATA_MWDMA2,
787 .udma_mask = ATA_UDMA5,
788 .port_ops = &hpt374_fn1_port_ops
791 static const int MHz[4] = { 33, 40, 50, 66 };
792 void *private_data = NULL;
793 const struct ata_port_info *ppi[] = { NULL, NULL };
801 unsigned long iobase = pci_resource_start(dev, 4);
803 const struct hpt_chip *chip_table;
807 rc = pcim_enable_device(dev);
811 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
814 if (dev->device == PCI_DEVICE_ID_TTI_HPT366) {
815 /* May be a later chip in disguise. Check */
816 /* Older chips are in the HPT366 driver. Ignore them */
819 /* N series chips have their own driver. Ignore */
825 ppi[0] = &info_hpt370;
826 chip_table = &hpt370;
830 ppi[0] = &info_hpt370a;
831 chip_table = &hpt370a;
835 ppi[0] = &info_hpt372;
836 chip_table = &hpt372;
839 printk(KERN_ERR "pata_hpt37x: Unknown HPT366 subtype please report (%d).\n", class_rev);
843 switch(dev->device) {
844 case PCI_DEVICE_ID_TTI_HPT372:
845 /* 372N if rev >= 2*/
848 ppi[0] = &info_hpt372;
849 chip_table = &hpt372a;
851 case PCI_DEVICE_ID_TTI_HPT302:
852 /* 302N if rev > 1 */
855 ppi[0] = &info_hpt372;
857 chip_table = &hpt302;
859 case PCI_DEVICE_ID_TTI_HPT371:
862 ppi[0] = &info_hpt372;
863 chip_table = &hpt371;
864 /* Single channel device, master is not present
865 but the BIOS (or us for non x86) must mark it
867 pci_read_config_byte(dev, 0x50, &mcr1);
869 pci_write_config_byte(dev, 0x50, mcr1);
871 case PCI_DEVICE_ID_TTI_HPT374:
872 chip_table = &hpt374;
873 if (!(PCI_FUNC(dev->devfn) & 1))
874 *ppi = &info_hpt374_fn0;
876 *ppi = &info_hpt374_fn1;
879 printk(KERN_ERR "pata_hpt37x: PCI table is bogus please report (%d).\n", dev->device);
883 /* Ok so this is a chip we support */
885 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
886 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
887 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
888 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
890 pci_read_config_byte(dev, 0x5A, &irqmask);
892 pci_write_config_byte(dev, 0x5a, irqmask);
895 * default to pci clock. make sure MA15/16 are set to output
896 * to prevent drives having problems with 40-pin cables. Needed
897 * for some drives such as IBM-DTLA which will not enter ready
898 * state on reset when PDIAG is a input.
901 pci_write_config_byte(dev, 0x5b, 0x23);
904 * HighPoint does this for HPT372A.
905 * NOTE: This register is only writeable via I/O space.
907 if (chip_table == &hpt372a)
908 outb(0x0e, iobase + 0x9c);
910 /* Some devices do not let this value be accessed via PCI space
911 according to the old driver. In addition we must use the value
912 from FN 0 on the HPT374 */
914 if (chip_table == &hpt374) {
915 freq = hpt374_read_freq(dev);
919 freq = inl(iobase + 0x90);
921 if ((freq >> 12) != 0xABCDE) {
926 printk(KERN_WARNING "pata_hpt37x: BIOS has not set timing clocks.\n");
928 /* This is the process the HPT371 BIOS is reported to use */
929 for(i = 0; i < 128; i++) {
930 pci_read_config_byte(dev, 0x78, &sr);
939 * Turn the frequency check into a band and then find a timing
943 clock_slot = hpt37x_clock_slot(freq, chip_table->base);
944 if (chip_table->clocks[clock_slot] == NULL || prefer_dpll) {
946 * We need to try PLL mode instead
948 * For non UDMA133 capable devices we should
949 * use a 50MHz DPLL by choice
951 unsigned int f_low, f_high;
955 dpll = (ppi[0]->udma_mask & 0xC0) ? 3 : 2;
957 f_low = (MHz[clock_slot] * 48) / MHz[dpll];
962 /* Select the DPLL clock. */
963 pci_write_config_byte(dev, 0x5b, 0x21);
964 pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low | 0x100);
966 for(adjust = 0; adjust < 8; adjust++) {
967 if (hpt37x_calibrate_dpll(dev))
969 /* See if it'll settle at a fractionally different clock */
971 f_low -= adjust >> 1;
973 f_high += adjust >> 1;
974 pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low | 0x100);
977 printk(KERN_ERR "pata_hpt37x: DPLL did not stabilize!\n");
981 private_data = (void *)hpt37x_timings_66;
983 private_data = (void *)hpt37x_timings_50;
985 printk(KERN_INFO "pata_hpt37x: bus clock %dMHz, using %dMHz DPLL.\n",
986 MHz[clock_slot], MHz[dpll]);
988 private_data = (void *)chip_table->clocks[clock_slot];
990 * Perform a final fixup. Note that we will have used the
991 * DPLL on the HPT372 which means we don't have to worry
992 * about lack of UDMA133 support on lower clocks
995 if (clock_slot < 2 && ppi[0] == &info_hpt370)
996 ppi[0] = &info_hpt370_33;
997 if (clock_slot < 2 && ppi[0] == &info_hpt370a)
998 ppi[0] = &info_hpt370a_33;
999 printk(KERN_INFO "pata_hpt37x: %s using %dMHz bus clock.\n",
1000 chip_table->name, MHz[clock_slot]);
1003 /* Now kick off ATA set up */
1004 return ata_pci_sff_init_one(dev, ppi, &hpt37x_sht, private_data);
1007 static const struct pci_device_id hpt37x[] = {
1008 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
1009 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT371), },
1010 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT372), },
1011 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT374), },
1012 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT302), },
1017 static struct pci_driver hpt37x_pci_driver = {
1020 .probe = hpt37x_init_one,
1021 .remove = ata_pci_remove_one
1024 static int __init hpt37x_init(void)
1026 return pci_register_driver(&hpt37x_pci_driver);
1029 static void __exit hpt37x_exit(void)
1031 pci_unregister_driver(&hpt37x_pci_driver);
1034 MODULE_AUTHOR("Alan Cox");
1035 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT37x/30x");
1036 MODULE_LICENSE("GPL");
1037 MODULE_DEVICE_TABLE(pci, hpt37x);
1038 MODULE_VERSION(DRV_VERSION);
1040 module_init(hpt37x_init);
1041 module_exit(hpt37x_exit);