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) 2005-2006 MontaVista Software, Inc.
15 * Look into engine reset on timeout errors. Should not be
19 #include <linux/kernel.h>
20 #include <linux/module.h>
21 #include <linux/pci.h>
22 #include <linux/init.h>
23 #include <linux/blkdev.h>
24 #include <linux/delay.h>
25 #include <scsi/scsi_host.h>
26 #include <linux/libata.h>
28 #define DRV_NAME "pata_hpt37x"
29 #define DRV_VERSION "0.6.5"
39 struct hpt_clock const *clocks[4];
42 /* key for bus clock timings
44 * 0:3 data_high_time. inactive time of DIOW_/DIOR_ for PIO and MW
45 * DMA. cycles = value + 1
46 * 4:8 data_low_time. active time of DIOW_/DIOR_ for PIO and MW
47 * DMA. cycles = value + 1
48 * 9:12 cmd_high_time. inactive time of DIOW_/DIOR_ during task file
50 * 13:17 cmd_low_time. active time of DIOW_/DIOR_ during task file
52 * 18:21 udma_cycle_time. clock freq and clock cycles for UDMA xfer.
53 * during task file register access.
54 * 22:24 pre_high_time. time to initialize 1st cycle for PIO and MW DMA
56 * 25:27 cmd_pre_high_time. time to initialize 1st PIO cycle for task
60 * 30 PIO_MST enable. if set, the chip is in bus master mode during
65 static struct hpt_clock hpt37x_timings_33[] = {
66 { XFER_UDMA_6, 0x12446231 }, /* 0x12646231 ?? */
67 { XFER_UDMA_5, 0x12446231 },
68 { XFER_UDMA_4, 0x12446231 },
69 { XFER_UDMA_3, 0x126c6231 },
70 { XFER_UDMA_2, 0x12486231 },
71 { XFER_UDMA_1, 0x124c6233 },
72 { XFER_UDMA_0, 0x12506297 },
74 { XFER_MW_DMA_2, 0x22406c31 },
75 { XFER_MW_DMA_1, 0x22406c33 },
76 { XFER_MW_DMA_0, 0x22406c97 },
78 { XFER_PIO_4, 0x06414e31 },
79 { XFER_PIO_3, 0x06414e42 },
80 { XFER_PIO_2, 0x06414e53 },
81 { XFER_PIO_1, 0x06814e93 },
82 { XFER_PIO_0, 0x06814ea7 }
85 static struct hpt_clock hpt37x_timings_50[] = {
86 { XFER_UDMA_6, 0x12848242 },
87 { XFER_UDMA_5, 0x12848242 },
88 { XFER_UDMA_4, 0x12ac8242 },
89 { XFER_UDMA_3, 0x128c8242 },
90 { XFER_UDMA_2, 0x120c8242 },
91 { XFER_UDMA_1, 0x12148254 },
92 { XFER_UDMA_0, 0x121882ea },
94 { XFER_MW_DMA_2, 0x22808242 },
95 { XFER_MW_DMA_1, 0x22808254 },
96 { XFER_MW_DMA_0, 0x228082ea },
98 { XFER_PIO_4, 0x0a81f442 },
99 { XFER_PIO_3, 0x0a81f443 },
100 { XFER_PIO_2, 0x0a81f454 },
101 { XFER_PIO_1, 0x0ac1f465 },
102 { XFER_PIO_0, 0x0ac1f48a }
105 static struct hpt_clock hpt37x_timings_66[] = {
106 { XFER_UDMA_6, 0x1c869c62 },
107 { XFER_UDMA_5, 0x1cae9c62 }, /* 0x1c8a9c62 */
108 { XFER_UDMA_4, 0x1c8a9c62 },
109 { XFER_UDMA_3, 0x1c8e9c62 },
110 { XFER_UDMA_2, 0x1c929c62 },
111 { XFER_UDMA_1, 0x1c9a9c62 },
112 { XFER_UDMA_0, 0x1c829c62 },
114 { XFER_MW_DMA_2, 0x2c829c62 },
115 { XFER_MW_DMA_1, 0x2c829c66 },
116 { XFER_MW_DMA_0, 0x2c829d2e },
118 { XFER_PIO_4, 0x0c829c62 },
119 { XFER_PIO_3, 0x0c829c84 },
120 { XFER_PIO_2, 0x0c829ca6 },
121 { XFER_PIO_1, 0x0d029d26 },
122 { XFER_PIO_0, 0x0d029d5e }
126 static const struct hpt_chip hpt370 = {
137 static const struct hpt_chip hpt370a = {
148 static const struct hpt_chip hpt372 = {
159 static const struct hpt_chip hpt302 = {
170 static const struct hpt_chip hpt371 = {
181 static const struct hpt_chip hpt372a = {
192 static const struct hpt_chip hpt374 = {
204 * hpt37x_find_mode - reset the hpt37x bus
206 * @speed: transfer mode
208 * Return the 32bit register programming information for this channel
209 * that matches the speed provided.
212 static u32 hpt37x_find_mode(struct ata_port *ap, int speed)
214 struct hpt_clock *clocks = ap->host->private_data;
216 while(clocks->xfer_speed) {
217 if (clocks->xfer_speed == speed)
218 return clocks->timing;
222 return 0xffffffffU; /* silence compiler warning */
225 static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, const char *list[])
227 unsigned char model_num[ATA_ID_PROD_LEN + 1];
230 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
232 while (list[i] != NULL) {
233 if (!strcmp(list[i], model_num)) {
234 printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n",
243 static const char *bad_ata33[] = {
244 "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", "Maxtor 90845U3", "Maxtor 90650U2",
245 "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
246 "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
248 "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
249 "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
250 "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
254 static const char *bad_ata100_5[] = {
274 * hpt370_filter - mode selection filter
277 * Block UDMA on devices that cause trouble with this controller.
280 static unsigned long hpt370_filter(struct ata_device *adev, unsigned long mask)
282 if (adev->class == ATA_DEV_ATA) {
283 if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
284 mask &= ~ATA_MASK_UDMA;
285 if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5))
286 mask &= ~(0x1F << ATA_SHIFT_UDMA);
288 return ata_pci_default_filter(adev, mask);
292 * hpt370a_filter - mode selection filter
295 * Block UDMA on devices that cause trouble with this controller.
298 static unsigned long hpt370a_filter(struct ata_device *adev, unsigned long mask)
300 if (adev->class != ATA_DEV_ATA) {
301 if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5))
302 mask &= ~ (0x1F << ATA_SHIFT_UDMA);
304 return ata_pci_default_filter(adev, mask);
308 * hpt37x_pre_reset - reset the hpt37x bus
309 * @ap: ATA port to reset
310 * @deadline: deadline jiffies for the operation
312 * Perform the initial reset handling for the 370/372 and 374 func 0
315 static int hpt37x_pre_reset(struct ata_port *ap, unsigned long deadline)
318 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
319 static const struct pci_bits hpt37x_enable_bits[] = {
320 { 0x50, 1, 0x04, 0x04 },
321 { 0x54, 1, 0x04, 0x04 }
323 if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
326 pci_read_config_byte(pdev, 0x5B, &scr2);
327 pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01);
328 /* Cable register now active */
329 pci_read_config_byte(pdev, 0x5A, &ata66);
331 pci_write_config_byte(pdev, 0x5B, scr2);
333 if (ata66 & (1 << ap->port_no))
334 ap->cbl = ATA_CBL_PATA40;
336 ap->cbl = ATA_CBL_PATA80;
338 /* Reset the state machine */
339 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
342 return ata_std_prereset(ap, deadline);
346 * hpt37x_error_handler - reset the hpt374
347 * @ap: ATA port to reset
349 * Perform probe for HPT37x, except for HPT374 channel 2
352 static void hpt37x_error_handler(struct ata_port *ap)
354 ata_bmdma_drive_eh(ap, hpt37x_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
357 static int hpt374_pre_reset(struct ata_port *ap, unsigned long deadline)
359 static const struct pci_bits hpt37x_enable_bits[] = {
360 { 0x50, 1, 0x04, 0x04 },
361 { 0x54, 1, 0x04, 0x04 }
365 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
367 if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
370 /* Do the extra channel work */
371 pci_read_config_word(pdev, 0x52, &mcr3);
372 pci_read_config_word(pdev, 0x56, &mcr6);
373 /* Set bit 15 of 0x52 to enable TCBLID as input
374 Set bit 15 of 0x56 to enable FCBLID as input
376 pci_write_config_word(pdev, 0x52, mcr3 | 0x8000);
377 pci_write_config_word(pdev, 0x56, mcr6 | 0x8000);
378 pci_read_config_byte(pdev, 0x5A, &ata66);
379 /* Reset TCBLID/FCBLID to output */
380 pci_write_config_word(pdev, 0x52, mcr3);
381 pci_write_config_word(pdev, 0x56, mcr6);
383 if (ata66 & (1 << ap->port_no))
384 ap->cbl = ATA_CBL_PATA40;
386 ap->cbl = ATA_CBL_PATA80;
388 /* Reset the state machine */
389 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
392 return ata_std_prereset(ap, deadline);
396 * hpt374_error_handler - reset the hpt374
399 * The 374 cable detect is a little different due to the extra
400 * channels. The function 0 channels work like usual but function 1
404 static void hpt374_error_handler(struct ata_port *ap)
406 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
408 if (!(PCI_FUNC(pdev->devfn) & 1))
409 hpt37x_error_handler(ap);
411 ata_bmdma_drive_eh(ap, hpt374_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
415 * hpt370_set_piomode - PIO setup
417 * @adev: device on the interface
419 * Perform PIO mode setup.
422 static void hpt370_set_piomode(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->pio_mode);
441 mode &= ~0x8000000; /* No FIFO in PIO */
442 mode &= ~0x30070000; /* Leave config bits alone */
443 reg &= 0x30070000; /* Strip timing bits */
444 pci_write_config_dword(pdev, addr1, reg | mode);
448 * hpt370_set_dmamode - DMA timing setup
450 * @adev: Device being configured
452 * Set up the channel for MWDMA or UDMA modes. Much the same as with
453 * PIO, load the mode number and then set MWDMA or UDMA flag.
456 static void hpt370_set_dmamode(struct ata_port *ap, struct ata_device *adev)
458 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
464 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
465 addr2 = 0x51 + 4 * ap->port_no;
467 /* Fast interrupt prediction disable, hold off interrupt disable */
468 pci_read_config_byte(pdev, addr2, &fast);
471 pci_write_config_byte(pdev, addr2, fast);
473 pci_read_config_dword(pdev, addr1, ®);
474 mode = hpt37x_find_mode(ap, adev->dma_mode);
475 mode |= 0x8000000; /* FIFO in MWDMA or UDMA */
476 mode &= ~0xC0000000; /* Leave config bits alone */
477 reg &= 0xC0000000; /* Strip timing bits */
478 pci_write_config_dword(pdev, addr1, reg | mode);
482 * hpt370_bmdma_start - DMA engine begin
485 * The 370 and 370A want us to reset the DMA engine each time we
486 * use it. The 372 and later are fine.
489 static void hpt370_bmdma_start(struct ata_queued_cmd *qc)
491 struct ata_port *ap = qc->ap;
492 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
493 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
499 * hpt370_bmdma_end - DMA engine stop
502 * Work around the HPT370 DMA engine.
505 static void hpt370_bmdma_stop(struct ata_queued_cmd *qc)
507 struct ata_port *ap = qc->ap;
508 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
509 u8 dma_stat = ioread8(ap->ioaddr.bmdma_addr + 2);
511 void __iomem *bmdma = ap->ioaddr.bmdma_addr;
513 if (dma_stat & 0x01) {
515 dma_stat = ioread8(bmdma + 2);
517 if (dma_stat & 0x01) {
518 /* Clear the engine */
519 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
522 dma_cmd = ioread8(bmdma );
523 iowrite8(dma_cmd & 0xFE, bmdma);
525 dma_stat = ioread8(bmdma + 2);
526 iowrite8(dma_stat | 0x06 , bmdma + 2);
527 /* Clear the engine */
528 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
535 * hpt372_set_piomode - PIO setup
537 * @adev: device on the interface
539 * Perform PIO mode setup.
542 static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev)
544 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
550 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
551 addr2 = 0x51 + 4 * ap->port_no;
553 /* Fast interrupt prediction disable, hold off interrupt disable */
554 pci_read_config_byte(pdev, addr2, &fast);
556 pci_write_config_byte(pdev, addr2, fast);
558 pci_read_config_dword(pdev, addr1, ®);
559 mode = hpt37x_find_mode(ap, adev->pio_mode);
561 printk("Find mode for %d reports %X\n", adev->pio_mode, mode);
562 mode &= ~0x80000000; /* No FIFO in PIO */
563 mode &= ~0x30070000; /* Leave config bits alone */
564 reg &= 0x30070000; /* Strip timing bits */
565 pci_write_config_dword(pdev, addr1, reg | mode);
569 * hpt372_set_dmamode - DMA timing setup
571 * @adev: Device being configured
573 * Set up the channel for MWDMA or UDMA modes. Much the same as with
574 * PIO, load the mode number and then set MWDMA or UDMA flag.
577 static void hpt372_set_dmamode(struct ata_port *ap, struct ata_device *adev)
579 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
585 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
586 addr2 = 0x51 + 4 * ap->port_no;
588 /* Fast interrupt prediction disable, hold off interrupt disable */
589 pci_read_config_byte(pdev, addr2, &fast);
591 pci_write_config_byte(pdev, addr2, fast);
593 pci_read_config_dword(pdev, addr1, ®);
594 mode = hpt37x_find_mode(ap, adev->dma_mode);
595 printk("Find mode for DMA %d reports %X\n", adev->dma_mode, mode);
596 mode &= ~0xC0000000; /* Leave config bits alone */
597 mode |= 0x80000000; /* FIFO in MWDMA or UDMA */
598 reg &= 0xC0000000; /* Strip timing bits */
599 pci_write_config_dword(pdev, addr1, reg | mode);
603 * hpt37x_bmdma_end - DMA engine stop
606 * Clean up after the HPT372 and later DMA engine
609 static void hpt37x_bmdma_stop(struct ata_queued_cmd *qc)
611 struct ata_port *ap = qc->ap;
612 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
613 int mscreg = 0x50 + 4 * ap->port_no;
614 u8 bwsr_stat, msc_stat;
616 pci_read_config_byte(pdev, 0x6A, &bwsr_stat);
617 pci_read_config_byte(pdev, mscreg, &msc_stat);
618 if (bwsr_stat & (1 << ap->port_no))
619 pci_write_config_byte(pdev, mscreg, msc_stat | 0x30);
624 static struct scsi_host_template hpt37x_sht = {
625 .module = THIS_MODULE,
627 .ioctl = ata_scsi_ioctl,
628 .queuecommand = ata_scsi_queuecmd,
629 .can_queue = ATA_DEF_QUEUE,
630 .this_id = ATA_SHT_THIS_ID,
631 .sg_tablesize = LIBATA_MAX_PRD,
632 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
633 .emulated = ATA_SHT_EMULATED,
634 .use_clustering = ATA_SHT_USE_CLUSTERING,
635 .proc_name = DRV_NAME,
636 .dma_boundary = ATA_DMA_BOUNDARY,
637 .slave_configure = ata_scsi_slave_config,
638 .slave_destroy = ata_scsi_slave_destroy,
639 .bios_param = ata_std_bios_param,
643 * Configuration for HPT370
646 static struct ata_port_operations hpt370_port_ops = {
647 .port_disable = ata_port_disable,
648 .set_piomode = hpt370_set_piomode,
649 .set_dmamode = hpt370_set_dmamode,
650 .mode_filter = hpt370_filter,
652 .tf_load = ata_tf_load,
653 .tf_read = ata_tf_read,
654 .check_status = ata_check_status,
655 .exec_command = ata_exec_command,
656 .dev_select = ata_std_dev_select,
658 .freeze = ata_bmdma_freeze,
659 .thaw = ata_bmdma_thaw,
660 .error_handler = hpt37x_error_handler,
661 .post_internal_cmd = ata_bmdma_post_internal_cmd,
663 .bmdma_setup = ata_bmdma_setup,
664 .bmdma_start = hpt370_bmdma_start,
665 .bmdma_stop = hpt370_bmdma_stop,
666 .bmdma_status = ata_bmdma_status,
668 .qc_prep = ata_qc_prep,
669 .qc_issue = ata_qc_issue_prot,
671 .data_xfer = ata_data_xfer,
673 .irq_handler = ata_interrupt,
674 .irq_clear = ata_bmdma_irq_clear,
675 .irq_on = ata_irq_on,
676 .irq_ack = ata_irq_ack,
678 .port_start = ata_port_start,
682 * Configuration for HPT370A. Close to 370 but less filters
685 static struct ata_port_operations hpt370a_port_ops = {
686 .port_disable = ata_port_disable,
687 .set_piomode = hpt370_set_piomode,
688 .set_dmamode = hpt370_set_dmamode,
689 .mode_filter = hpt370a_filter,
691 .tf_load = ata_tf_load,
692 .tf_read = ata_tf_read,
693 .check_status = ata_check_status,
694 .exec_command = ata_exec_command,
695 .dev_select = ata_std_dev_select,
697 .freeze = ata_bmdma_freeze,
698 .thaw = ata_bmdma_thaw,
699 .error_handler = hpt37x_error_handler,
700 .post_internal_cmd = ata_bmdma_post_internal_cmd,
702 .bmdma_setup = ata_bmdma_setup,
703 .bmdma_start = hpt370_bmdma_start,
704 .bmdma_stop = hpt370_bmdma_stop,
705 .bmdma_status = ata_bmdma_status,
707 .qc_prep = ata_qc_prep,
708 .qc_issue = ata_qc_issue_prot,
710 .data_xfer = ata_data_xfer,
712 .irq_handler = ata_interrupt,
713 .irq_clear = ata_bmdma_irq_clear,
714 .irq_on = ata_irq_on,
715 .irq_ack = ata_irq_ack,
717 .port_start = ata_port_start,
721 * Configuration for HPT372, HPT371, HPT302. Slightly different PIO
722 * and DMA mode setting functionality.
725 static struct ata_port_operations hpt372_port_ops = {
726 .port_disable = ata_port_disable,
727 .set_piomode = hpt372_set_piomode,
728 .set_dmamode = hpt372_set_dmamode,
729 .mode_filter = ata_pci_default_filter,
731 .tf_load = ata_tf_load,
732 .tf_read = ata_tf_read,
733 .check_status = ata_check_status,
734 .exec_command = ata_exec_command,
735 .dev_select = ata_std_dev_select,
737 .freeze = ata_bmdma_freeze,
738 .thaw = ata_bmdma_thaw,
739 .error_handler = hpt37x_error_handler,
740 .post_internal_cmd = ata_bmdma_post_internal_cmd,
742 .bmdma_setup = ata_bmdma_setup,
743 .bmdma_start = ata_bmdma_start,
744 .bmdma_stop = hpt37x_bmdma_stop,
745 .bmdma_status = ata_bmdma_status,
747 .qc_prep = ata_qc_prep,
748 .qc_issue = ata_qc_issue_prot,
750 .data_xfer = ata_data_xfer,
752 .irq_handler = ata_interrupt,
753 .irq_clear = ata_bmdma_irq_clear,
754 .irq_on = ata_irq_on,
755 .irq_ack = ata_irq_ack,
757 .port_start = ata_port_start,
761 * Configuration for HPT374. Mode setting works like 372 and friends
762 * but we have a different cable detection procedure.
765 static struct ata_port_operations hpt374_port_ops = {
766 .port_disable = ata_port_disable,
767 .set_piomode = hpt372_set_piomode,
768 .set_dmamode = hpt372_set_dmamode,
769 .mode_filter = ata_pci_default_filter,
771 .tf_load = ata_tf_load,
772 .tf_read = ata_tf_read,
773 .check_status = ata_check_status,
774 .exec_command = ata_exec_command,
775 .dev_select = ata_std_dev_select,
777 .freeze = ata_bmdma_freeze,
778 .thaw = ata_bmdma_thaw,
779 .error_handler = hpt374_error_handler,
780 .post_internal_cmd = ata_bmdma_post_internal_cmd,
782 .bmdma_setup = ata_bmdma_setup,
783 .bmdma_start = ata_bmdma_start,
784 .bmdma_stop = hpt37x_bmdma_stop,
785 .bmdma_status = ata_bmdma_status,
787 .qc_prep = ata_qc_prep,
788 .qc_issue = ata_qc_issue_prot,
790 .data_xfer = ata_data_xfer,
792 .irq_handler = ata_interrupt,
793 .irq_clear = ata_bmdma_irq_clear,
794 .irq_on = ata_irq_on,
795 .irq_ack = ata_irq_ack,
797 .port_start = ata_port_start,
801 * htp37x_clock_slot - Turn timing to PC clock entry
802 * @freq: Reported frequency timing
805 * Turn the timing data intoa clock slot (0 for 33, 1 for 40, 2 for 50
809 static int hpt37x_clock_slot(unsigned int freq, unsigned int base)
811 unsigned int f = (base * freq) / 192; /* Mhz */
813 return 0; /* 33Mhz slot */
815 return 1; /* 40Mhz slot */
817 return 2; /* 50Mhz slot */
818 return 3; /* 60Mhz slot */
822 * hpt37x_calibrate_dpll - Calibrate the DPLL loop
825 * Perform a calibration cycle on the HPT37x DPLL. Returns 1 if this
829 static int hpt37x_calibrate_dpll(struct pci_dev *dev)
835 for(tries = 0; tries < 0x5000; tries++) {
837 pci_read_config_byte(dev, 0x5b, ®5b);
839 /* See if it stays set */
840 for(tries = 0; tries < 0x1000; tries ++) {
841 pci_read_config_byte(dev, 0x5b, ®5b);
843 if ((reg5b & 0x80) == 0)
846 /* Turn off tuning, we have the DPLL set */
847 pci_read_config_dword(dev, 0x5c, ®5c);
848 pci_write_config_dword(dev, 0x5c, reg5c & ~ 0x100);
852 /* Never went stable */
856 * hpt37x_init_one - Initialise an HPT37X/302
858 * @id: Entry in match table
860 * Initialise an HPT37x device. There are some interesting complications
861 * here. Firstly the chip may report 366 and be one of several variants.
862 * Secondly all the timings depend on the clock for the chip which we must
865 * This is the known chip mappings. It may be missing a couple of later
868 * Chip version PCI Rev Notes
869 * HPT366 4 (HPT366) 0 Other driver
870 * HPT366 4 (HPT366) 1 Other driver
871 * HPT368 4 (HPT366) 2 Other driver
872 * HPT370 4 (HPT366) 3 UDMA100
873 * HPT370A 4 (HPT366) 4 UDMA100
874 * HPT372 4 (HPT366) 5 UDMA133 (1)
875 * HPT372N 4 (HPT366) 6 Other driver
876 * HPT372A 5 (HPT372) 1 UDMA133 (1)
877 * HPT372N 5 (HPT372) 2 Other driver
878 * HPT302 6 (HPT302) 1 UDMA133
879 * HPT302N 6 (HPT302) 2 Other driver
880 * HPT371 7 (HPT371) * UDMA133
881 * HPT374 8 (HPT374) * UDMA133 4 channel
882 * HPT372N 9 (HPT372N) * Other driver
884 * (1) UDMA133 support depends on the bus clock
887 static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
889 /* HPT370 - UDMA100 */
890 static struct ata_port_info info_hpt370 = {
892 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
896 .port_ops = &hpt370_port_ops
898 /* HPT370A - UDMA100 */
899 static struct ata_port_info info_hpt370a = {
901 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
905 .port_ops = &hpt370a_port_ops
907 /* HPT370 - UDMA100 */
908 static struct ata_port_info info_hpt370_33 = {
910 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
914 .port_ops = &hpt370_port_ops
916 /* HPT370A - UDMA100 */
917 static struct ata_port_info info_hpt370a_33 = {
919 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
923 .port_ops = &hpt370a_port_ops
925 /* HPT371, 372 and friends - UDMA133 */
926 static struct ata_port_info info_hpt372 = {
928 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
932 .port_ops = &hpt372_port_ops
934 /* HPT371, 372 and friends - UDMA100 at 50MHz clock */
935 static struct ata_port_info info_hpt372_50 = {
937 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
941 .port_ops = &hpt372_port_ops
943 /* HPT374 - UDMA133 */
944 static struct ata_port_info info_hpt374 = {
946 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
950 .port_ops = &hpt374_port_ops
953 static const int MHz[4] = { 33, 40, 50, 66 };
955 struct ata_port_info *port_info[2];
956 struct ata_port_info *port;
964 unsigned long iobase = pci_resource_start(dev, 4);
966 const struct hpt_chip *chip_table;
969 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
972 if (dev->device == PCI_DEVICE_ID_TTI_HPT366) {
973 /* May be a later chip in disguise. Check */
974 /* Older chips are in the HPT366 driver. Ignore them */
977 /* N series chips have their own driver. Ignore */
984 chip_table = &hpt370;
988 port = &info_hpt370a;
989 chip_table = &hpt370a;
994 chip_table = &hpt372;
997 printk(KERN_ERR "pata_hpt37x: Unknown HPT366 subtype please report (%d).\n", class_rev);
1001 switch(dev->device) {
1002 case PCI_DEVICE_ID_TTI_HPT372:
1003 /* 372N if rev >= 2*/
1006 port = &info_hpt372;
1007 chip_table = &hpt372a;
1009 case PCI_DEVICE_ID_TTI_HPT302:
1010 /* 302N if rev > 1 */
1013 port = &info_hpt372;
1015 chip_table = &hpt302;
1017 case PCI_DEVICE_ID_TTI_HPT371:
1020 port = &info_hpt372;
1021 chip_table = &hpt371;
1022 /* Single channel device, master is not present
1023 but the BIOS (or us for non x86) must mark it
1025 pci_read_config_byte(dev, 0x50, &mcr1);
1027 pci_write_config_byte(dev, 0x50, mcr1);
1029 case PCI_DEVICE_ID_TTI_HPT374:
1030 chip_table = &hpt374;
1031 port = &info_hpt374;
1034 printk(KERN_ERR "pata_hpt37x: PCI table is bogus please report (%d).\n", dev->device);
1038 /* Ok so this is a chip we support */
1040 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
1041 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
1042 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
1043 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
1045 pci_read_config_byte(dev, 0x5A, &irqmask);
1047 pci_write_config_byte(dev, 0x5a, irqmask);
1050 * default to pci clock. make sure MA15/16 are set to output
1051 * to prevent drives having problems with 40-pin cables. Needed
1052 * for some drives such as IBM-DTLA which will not enter ready
1053 * state on reset when PDIAG is a input.
1056 pci_write_config_byte(dev, 0x5b, 0x23);
1059 * HighPoint does this for HPT372A.
1060 * NOTE: This register is only writeable via I/O space.
1062 if (chip_table == &hpt372a)
1063 outb(0x0e, iobase + 0x9c);
1065 /* Some devices do not let this value be accessed via PCI space
1066 according to the old driver */
1068 freq = inl(iobase + 0x90);
1069 if ((freq >> 12) != 0xABCDE) {
1074 printk(KERN_WARNING "pata_hpt37x: BIOS has not set timing clocks.\n");
1076 /* This is the process the HPT371 BIOS is reported to use */
1077 for(i = 0; i < 128; i++) {
1078 pci_read_config_byte(dev, 0x78, &sr);
1079 total += sr & 0x1FF;
1087 * Turn the frequency check into a band and then find a timing
1088 * table to match it.
1091 clock_slot = hpt37x_clock_slot(freq, chip_table->base);
1092 if (chip_table->clocks[clock_slot] == NULL || prefer_dpll) {
1094 * We need to try PLL mode instead
1096 * For non UDMA133 capable devices we should
1097 * use a 50MHz DPLL by choice
1099 unsigned int f_low, f_high;
1103 if (port->udma_mask & 0xE0)
1106 f_low = (MHz[clock_slot] * chip_table->base) / 192;
1109 /* Select the DPLL clock. */
1110 pci_write_config_byte(dev, 0x5b, 0x21);
1112 for(adjust = 0; adjust < 8; adjust++) {
1113 if (hpt37x_calibrate_dpll(dev))
1115 /* See if it'll settle at a fractionally different clock */
1116 if ((adjust & 3) == 3) {
1120 pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low);
1123 printk(KERN_WARNING "hpt37x: DPLL did not stabilize.\n");
1126 if (clock_slot == 3)
1127 port->private_data = (void *)hpt37x_timings_66;
1129 port->private_data = (void *)hpt37x_timings_50;
1131 printk(KERN_INFO "hpt37x: Bus clock %dMHz, using DPLL.\n", MHz[clock_slot]);
1133 port->private_data = (void *)chip_table->clocks[clock_slot];
1135 * Perform a final fixup. Note that we will have used the
1136 * DPLL on the HPT372 which means we don't have to worry
1137 * about lack of UDMA133 support on lower clocks
1140 if (clock_slot < 2 && port == &info_hpt370)
1141 port = &info_hpt370_33;
1142 if (clock_slot < 2 && port == &info_hpt370a)
1143 port = &info_hpt370a_33;
1144 printk(KERN_INFO "hpt37x: %s: Bus clock %dMHz.\n", chip_table->name, MHz[clock_slot]);
1147 port_info[0] = port_info[1] = port;
1148 /* Now kick off ATA set up */
1149 return ata_pci_init_one(dev, port_info, 2);
1152 static const struct pci_device_id hpt37x[] = {
1153 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
1154 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT371), },
1155 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT372), },
1156 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT374), },
1157 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT302), },
1162 static struct pci_driver hpt37x_pci_driver = {
1165 .probe = hpt37x_init_one,
1166 .remove = ata_pci_remove_one
1169 static int __init hpt37x_init(void)
1171 return pci_register_driver(&hpt37x_pci_driver);
1174 static void __exit hpt37x_exit(void)
1176 pci_unregister_driver(&hpt37x_pci_driver);
1179 MODULE_AUTHOR("Alan Cox");
1180 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT37x/30x");
1181 MODULE_LICENSE("GPL");
1182 MODULE_DEVICE_TABLE(pci, hpt37x);
1183 MODULE_VERSION(DRV_VERSION);
1185 module_init(hpt37x_init);
1186 module_exit(hpt37x_exit);