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) 2005-2007 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 "0.6.11"
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_pci_default_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_pci_default_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_std_prereset(link, deadline);
345 * hpt37x_error_handler - reset the hpt374
346 * @ap: ATA port to reset
348 * Perform probe for HPT37x, except for HPT374 channel 2
351 static void hpt37x_error_handler(struct ata_port *ap)
353 ata_bmdma_drive_eh(ap, hpt37x_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
356 static int hpt374_pre_reset(struct ata_link *link, unsigned long deadline)
358 static const struct pci_bits hpt37x_enable_bits[] = {
359 { 0x50, 1, 0x04, 0x04 },
360 { 0x54, 1, 0x04, 0x04 }
364 struct ata_port *ap = link->ap;
365 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
366 unsigned int mcrbase = 0x50 + 4 * ap->port_no;
368 if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
371 /* Do the extra channel work */
372 pci_read_config_word(pdev, mcrbase + 2, &mcr3);
373 /* Set bit 15 of 0x52 to enable TCBLID as input
375 pci_write_config_word(pdev, mcrbase + 2, mcr3 | 0x8000);
376 pci_read_config_byte(pdev, 0x5A, &ata66);
377 /* Reset TCBLID/FCBLID to output */
378 pci_write_config_word(pdev, mcrbase + 2, mcr3);
380 if (ata66 & (2 >> ap->port_no))
381 ap->cbl = ATA_CBL_PATA40;
383 ap->cbl = ATA_CBL_PATA80;
385 /* Reset the state machine */
386 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
389 return ata_std_prereset(link, deadline);
393 * hpt374_error_handler - reset the hpt374
396 * The 374 cable detect is a little different due to the extra
397 * channels. The function 0 channels work like usual but function 1
401 static void hpt374_error_handler(struct ata_port *ap)
403 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
405 if (!(PCI_FUNC(pdev->devfn) & 1))
406 hpt37x_error_handler(ap);
408 ata_bmdma_drive_eh(ap, hpt374_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
412 * hpt370_set_piomode - PIO setup
414 * @adev: device on the interface
416 * Perform PIO mode setup.
419 static void hpt370_set_piomode(struct ata_port *ap, struct ata_device *adev)
421 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
427 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
428 addr2 = 0x51 + 4 * ap->port_no;
430 /* Fast interrupt prediction disable, hold off interrupt disable */
431 pci_read_config_byte(pdev, addr2, &fast);
434 pci_write_config_byte(pdev, addr2, fast);
436 pci_read_config_dword(pdev, addr1, ®);
437 mode = hpt37x_find_mode(ap, adev->pio_mode);
438 mode &= ~0x8000000; /* No FIFO in PIO */
439 mode &= ~0x30070000; /* Leave config bits alone */
440 reg &= 0x30070000; /* Strip timing bits */
441 pci_write_config_dword(pdev, addr1, reg | mode);
445 * hpt370_set_dmamode - DMA timing setup
447 * @adev: Device being configured
449 * Set up the channel for MWDMA or UDMA modes. Much the same as with
450 * PIO, load the mode number and then set MWDMA or UDMA flag.
453 static void hpt370_set_dmamode(struct ata_port *ap, struct ata_device *adev)
455 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
461 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
462 addr2 = 0x51 + 4 * ap->port_no;
464 /* Fast interrupt prediction disable, hold off interrupt disable */
465 pci_read_config_byte(pdev, addr2, &fast);
468 pci_write_config_byte(pdev, addr2, fast);
470 pci_read_config_dword(pdev, addr1, ®);
471 mode = hpt37x_find_mode(ap, adev->dma_mode);
472 mode |= 0x8000000; /* FIFO in MWDMA or UDMA */
473 mode &= ~0xC0000000; /* Leave config bits alone */
474 reg &= 0xC0000000; /* Strip timing bits */
475 pci_write_config_dword(pdev, addr1, reg | mode);
479 * hpt370_bmdma_start - DMA engine begin
482 * The 370 and 370A want us to reset the DMA engine each time we
483 * use it. The 372 and later are fine.
486 static void hpt370_bmdma_start(struct ata_queued_cmd *qc)
488 struct ata_port *ap = qc->ap;
489 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
490 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
496 * hpt370_bmdma_end - DMA engine stop
499 * Work around the HPT370 DMA engine.
502 static void hpt370_bmdma_stop(struct ata_queued_cmd *qc)
504 struct ata_port *ap = qc->ap;
505 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
506 u8 dma_stat = ioread8(ap->ioaddr.bmdma_addr + 2);
508 void __iomem *bmdma = ap->ioaddr.bmdma_addr;
510 if (dma_stat & 0x01) {
512 dma_stat = ioread8(bmdma + 2);
514 if (dma_stat & 0x01) {
515 /* Clear the engine */
516 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
519 dma_cmd = ioread8(bmdma );
520 iowrite8(dma_cmd & 0xFE, bmdma);
522 dma_stat = ioread8(bmdma + 2);
523 iowrite8(dma_stat | 0x06 , bmdma + 2);
524 /* Clear the engine */
525 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
532 * hpt372_set_piomode - PIO setup
534 * @adev: device on the interface
536 * Perform PIO mode setup.
539 static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev)
541 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
547 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
548 addr2 = 0x51 + 4 * ap->port_no;
550 /* Fast interrupt prediction disable, hold off interrupt disable */
551 pci_read_config_byte(pdev, addr2, &fast);
553 pci_write_config_byte(pdev, addr2, fast);
555 pci_read_config_dword(pdev, addr1, ®);
556 mode = hpt37x_find_mode(ap, adev->pio_mode);
558 printk("Find mode for %d reports %X\n", adev->pio_mode, mode);
559 mode &= ~0x80000000; /* No FIFO in PIO */
560 mode &= ~0x30070000; /* Leave config bits alone */
561 reg &= 0x30070000; /* Strip timing bits */
562 pci_write_config_dword(pdev, addr1, reg | mode);
566 * hpt372_set_dmamode - DMA timing setup
568 * @adev: Device being configured
570 * Set up the channel for MWDMA or UDMA modes. Much the same as with
571 * PIO, load the mode number and then set MWDMA or UDMA flag.
574 static void hpt372_set_dmamode(struct ata_port *ap, struct ata_device *adev)
576 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
582 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
583 addr2 = 0x51 + 4 * ap->port_no;
585 /* Fast interrupt prediction disable, hold off interrupt disable */
586 pci_read_config_byte(pdev, addr2, &fast);
588 pci_write_config_byte(pdev, addr2, fast);
590 pci_read_config_dword(pdev, addr1, ®);
591 mode = hpt37x_find_mode(ap, adev->dma_mode);
592 printk("Find mode for DMA %d reports %X\n", adev->dma_mode, mode);
593 mode &= ~0xC0000000; /* Leave config bits alone */
594 mode |= 0x80000000; /* FIFO in MWDMA or UDMA */
595 reg &= 0xC0000000; /* Strip timing bits */
596 pci_write_config_dword(pdev, addr1, reg | mode);
600 * hpt37x_bmdma_end - DMA engine stop
603 * Clean up after the HPT372 and later DMA engine
606 static void hpt37x_bmdma_stop(struct ata_queued_cmd *qc)
608 struct ata_port *ap = qc->ap;
609 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
610 int mscreg = 0x50 + 4 * ap->port_no;
611 u8 bwsr_stat, msc_stat;
613 pci_read_config_byte(pdev, 0x6A, &bwsr_stat);
614 pci_read_config_byte(pdev, mscreg, &msc_stat);
615 if (bwsr_stat & (1 << ap->port_no))
616 pci_write_config_byte(pdev, mscreg, msc_stat | 0x30);
621 static struct scsi_host_template hpt37x_sht = {
622 ATA_BMDMA_SHT(DRV_NAME),
626 * Configuration for HPT370
629 static struct ata_port_operations hpt370_port_ops = {
630 .inherits = &ata_bmdma_port_ops,
632 .bmdma_start = hpt370_bmdma_start,
633 .bmdma_stop = hpt370_bmdma_stop,
635 .mode_filter = hpt370_filter,
636 .set_piomode = hpt370_set_piomode,
637 .set_dmamode = hpt370_set_dmamode,
638 .error_handler = hpt37x_error_handler,
642 * Configuration for HPT370A. Close to 370 but less filters
645 static struct ata_port_operations hpt370a_port_ops = {
646 .inherits = &hpt370_port_ops,
647 .mode_filter = hpt370a_filter,
651 * Configuration for HPT372, HPT371, HPT302. Slightly different PIO
652 * and DMA mode setting functionality.
655 static struct ata_port_operations hpt372_port_ops = {
656 .inherits = &ata_bmdma_port_ops,
658 .bmdma_stop = hpt37x_bmdma_stop,
660 .set_piomode = hpt372_set_piomode,
661 .set_dmamode = hpt372_set_dmamode,
662 .error_handler = hpt37x_error_handler,
666 * Configuration for HPT374. Mode setting works like 372 and friends
667 * but we have a different cable detection procedure.
670 static struct ata_port_operations hpt374_port_ops = {
671 .inherits = &hpt372_port_ops,
672 .error_handler = hpt374_error_handler,
676 * htp37x_clock_slot - Turn timing to PC clock entry
677 * @freq: Reported frequency timing
680 * Turn the timing data intoa clock slot (0 for 33, 1 for 40, 2 for 50
684 static int hpt37x_clock_slot(unsigned int freq, unsigned int base)
686 unsigned int f = (base * freq) / 192; /* Mhz */
688 return 0; /* 33Mhz slot */
690 return 1; /* 40Mhz slot */
692 return 2; /* 50Mhz slot */
693 return 3; /* 60Mhz slot */
697 * hpt37x_calibrate_dpll - Calibrate the DPLL loop
700 * Perform a calibration cycle on the HPT37x DPLL. Returns 1 if this
704 static int hpt37x_calibrate_dpll(struct pci_dev *dev)
710 for(tries = 0; tries < 0x5000; tries++) {
712 pci_read_config_byte(dev, 0x5b, ®5b);
714 /* See if it stays set */
715 for(tries = 0; tries < 0x1000; tries ++) {
716 pci_read_config_byte(dev, 0x5b, ®5b);
718 if ((reg5b & 0x80) == 0)
721 /* Turn off tuning, we have the DPLL set */
722 pci_read_config_dword(dev, 0x5c, ®5c);
723 pci_write_config_dword(dev, 0x5c, reg5c & ~ 0x100);
727 /* Never went stable */
731 static u32 hpt374_read_freq(struct pci_dev *pdev)
734 unsigned long io_base = pci_resource_start(pdev, 4);
735 if (PCI_FUNC(pdev->devfn) & 1) {
736 struct pci_dev *pdev_0;
738 pdev_0 = pci_get_slot(pdev->bus, pdev->devfn - 1);
739 /* Someone hot plugged the controller on us ? */
742 io_base = pci_resource_start(pdev_0, 4);
743 freq = inl(io_base + 0x90);
746 freq = inl(io_base + 0x90);
751 * hpt37x_init_one - Initialise an HPT37X/302
753 * @id: Entry in match table
755 * Initialise an HPT37x device. There are some interesting complications
756 * here. Firstly the chip may report 366 and be one of several variants.
757 * Secondly all the timings depend on the clock for the chip which we must
760 * This is the known chip mappings. It may be missing a couple of later
763 * Chip version PCI Rev Notes
764 * HPT366 4 (HPT366) 0 Other driver
765 * HPT366 4 (HPT366) 1 Other driver
766 * HPT368 4 (HPT366) 2 Other driver
767 * HPT370 4 (HPT366) 3 UDMA100
768 * HPT370A 4 (HPT366) 4 UDMA100
769 * HPT372 4 (HPT366) 5 UDMA133 (1)
770 * HPT372N 4 (HPT366) 6 Other driver
771 * HPT372A 5 (HPT372) 1 UDMA133 (1)
772 * HPT372N 5 (HPT372) 2 Other driver
773 * HPT302 6 (HPT302) 1 UDMA133
774 * HPT302N 6 (HPT302) 2 Other driver
775 * HPT371 7 (HPT371) * UDMA133
776 * HPT374 8 (HPT374) * UDMA133 4 channel
777 * HPT372N 9 (HPT372N) * Other driver
779 * (1) UDMA133 support depends on the bus clock
782 static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
784 /* HPT370 - UDMA100 */
785 static const struct ata_port_info info_hpt370 = {
786 .flags = ATA_FLAG_SLAVE_POSS,
789 .udma_mask = ATA_UDMA5,
790 .port_ops = &hpt370_port_ops
792 /* HPT370A - UDMA100 */
793 static const struct ata_port_info info_hpt370a = {
794 .flags = ATA_FLAG_SLAVE_POSS,
797 .udma_mask = ATA_UDMA5,
798 .port_ops = &hpt370a_port_ops
800 /* HPT370 - UDMA100 */
801 static const struct ata_port_info info_hpt370_33 = {
802 .flags = ATA_FLAG_SLAVE_POSS,
805 .udma_mask = ATA_UDMA5,
806 .port_ops = &hpt370_port_ops
808 /* HPT370A - UDMA100 */
809 static const struct ata_port_info info_hpt370a_33 = {
810 .flags = ATA_FLAG_SLAVE_POSS,
813 .udma_mask = ATA_UDMA5,
814 .port_ops = &hpt370a_port_ops
816 /* HPT371, 372 and friends - UDMA133 */
817 static const struct ata_port_info info_hpt372 = {
818 .flags = ATA_FLAG_SLAVE_POSS,
821 .udma_mask = ATA_UDMA6,
822 .port_ops = &hpt372_port_ops
824 /* HPT374 - UDMA100 */
825 static const struct ata_port_info info_hpt374 = {
826 .flags = ATA_FLAG_SLAVE_POSS,
829 .udma_mask = ATA_UDMA5,
830 .port_ops = &hpt374_port_ops
833 static const int MHz[4] = { 33, 40, 50, 66 };
834 void *private_data = NULL;
835 const struct ata_port_info *ppi[] = { NULL, NULL };
843 unsigned long iobase = pci_resource_start(dev, 4);
845 const struct hpt_chip *chip_table;
849 rc = pcim_enable_device(dev);
853 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
856 if (dev->device == PCI_DEVICE_ID_TTI_HPT366) {
857 /* May be a later chip in disguise. Check */
858 /* Older chips are in the HPT366 driver. Ignore them */
861 /* N series chips have their own driver. Ignore */
867 ppi[0] = &info_hpt370;
868 chip_table = &hpt370;
872 ppi[0] = &info_hpt370a;
873 chip_table = &hpt370a;
877 ppi[0] = &info_hpt372;
878 chip_table = &hpt372;
881 printk(KERN_ERR "pata_hpt37x: Unknown HPT366 subtype please report (%d).\n", class_rev);
885 switch(dev->device) {
886 case PCI_DEVICE_ID_TTI_HPT372:
887 /* 372N if rev >= 2*/
890 ppi[0] = &info_hpt372;
891 chip_table = &hpt372a;
893 case PCI_DEVICE_ID_TTI_HPT302:
894 /* 302N if rev > 1 */
897 ppi[0] = &info_hpt372;
899 chip_table = &hpt302;
901 case PCI_DEVICE_ID_TTI_HPT371:
904 ppi[0] = &info_hpt372;
905 chip_table = &hpt371;
906 /* Single channel device, master is not present
907 but the BIOS (or us for non x86) must mark it
909 pci_read_config_byte(dev, 0x50, &mcr1);
911 pci_write_config_byte(dev, 0x50, mcr1);
913 case PCI_DEVICE_ID_TTI_HPT374:
914 chip_table = &hpt374;
915 ppi[0] = &info_hpt374;
918 printk(KERN_ERR "pata_hpt37x: PCI table is bogus please report (%d).\n", dev->device);
922 /* Ok so this is a chip we support */
924 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
925 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
926 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
927 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
929 pci_read_config_byte(dev, 0x5A, &irqmask);
931 pci_write_config_byte(dev, 0x5a, irqmask);
934 * default to pci clock. make sure MA15/16 are set to output
935 * to prevent drives having problems with 40-pin cables. Needed
936 * for some drives such as IBM-DTLA which will not enter ready
937 * state on reset when PDIAG is a input.
940 pci_write_config_byte(dev, 0x5b, 0x23);
943 * HighPoint does this for HPT372A.
944 * NOTE: This register is only writeable via I/O space.
946 if (chip_table == &hpt372a)
947 outb(0x0e, iobase + 0x9c);
949 /* Some devices do not let this value be accessed via PCI space
950 according to the old driver. In addition we must use the value
951 from FN 0 on the HPT374 */
953 if (chip_table == &hpt374) {
954 freq = hpt374_read_freq(dev);
958 freq = inl(iobase + 0x90);
960 if ((freq >> 12) != 0xABCDE) {
965 printk(KERN_WARNING "pata_hpt37x: BIOS has not set timing clocks.\n");
967 /* This is the process the HPT371 BIOS is reported to use */
968 for(i = 0; i < 128; i++) {
969 pci_read_config_byte(dev, 0x78, &sr);
978 * Turn the frequency check into a band and then find a timing
982 clock_slot = hpt37x_clock_slot(freq, chip_table->base);
983 if (chip_table->clocks[clock_slot] == NULL || prefer_dpll) {
985 * We need to try PLL mode instead
987 * For non UDMA133 capable devices we should
988 * use a 50MHz DPLL by choice
990 unsigned int f_low, f_high;
994 dpll = (ppi[0]->udma_mask & 0xC0) ? 3 : 2;
996 f_low = (MHz[clock_slot] * 48) / MHz[dpll];
1001 /* Select the DPLL clock. */
1002 pci_write_config_byte(dev, 0x5b, 0x21);
1003 pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low | 0x100);
1005 for(adjust = 0; adjust < 8; adjust++) {
1006 if (hpt37x_calibrate_dpll(dev))
1008 /* See if it'll settle at a fractionally different clock */
1010 f_low -= adjust >> 1;
1012 f_high += adjust >> 1;
1013 pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low | 0x100);
1016 printk(KERN_ERR "pata_hpt37x: DPLL did not stabilize!\n");
1020 private_data = (void *)hpt37x_timings_66;
1022 private_data = (void *)hpt37x_timings_50;
1024 printk(KERN_INFO "pata_hpt37x: bus clock %dMHz, using %dMHz DPLL.\n",
1025 MHz[clock_slot], MHz[dpll]);
1027 private_data = (void *)chip_table->clocks[clock_slot];
1029 * Perform a final fixup. Note that we will have used the
1030 * DPLL on the HPT372 which means we don't have to worry
1031 * about lack of UDMA133 support on lower clocks
1034 if (clock_slot < 2 && ppi[0] == &info_hpt370)
1035 ppi[0] = &info_hpt370_33;
1036 if (clock_slot < 2 && ppi[0] == &info_hpt370a)
1037 ppi[0] = &info_hpt370a_33;
1038 printk(KERN_INFO "pata_hpt37x: %s using %dMHz bus clock.\n",
1039 chip_table->name, MHz[clock_slot]);
1042 /* Now kick off ATA set up */
1043 return ata_pci_init_one(dev, ppi, &hpt37x_sht, private_data);
1046 static const struct pci_device_id hpt37x[] = {
1047 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
1048 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT371), },
1049 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT372), },
1050 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT374), },
1051 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT302), },
1056 static struct pci_driver hpt37x_pci_driver = {
1059 .probe = hpt37x_init_one,
1060 .remove = ata_pci_remove_one
1063 static int __init hpt37x_init(void)
1065 return pci_register_driver(&hpt37x_pci_driver);
1068 static void __exit hpt37x_exit(void)
1070 pci_unregister_driver(&hpt37x_pci_driver);
1073 MODULE_AUTHOR("Alan Cox");
1074 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT37x/30x");
1075 MODULE_LICENSE("GPL");
1076 MODULE_DEVICE_TABLE(pci, hpt37x);
1077 MODULE_VERSION(DRV_VERSION);
1079 module_init(hpt37x_init);
1080 module_exit(hpt37x_exit);