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_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_start - DMA engine begin
451 * The 370 and 370A want us to reset the DMA engine each time we
452 * use it. The 372 and later are fine.
455 static void hpt370_bmdma_start(struct ata_queued_cmd *qc)
457 struct ata_port *ap = qc->ap;
458 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
459 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
465 * hpt370_bmdma_end - DMA engine stop
468 * Work around the HPT370 DMA engine.
471 static void hpt370_bmdma_stop(struct ata_queued_cmd *qc)
473 struct ata_port *ap = qc->ap;
474 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
475 u8 dma_stat = ioread8(ap->ioaddr.bmdma_addr + 2);
477 void __iomem *bmdma = ap->ioaddr.bmdma_addr;
479 if (dma_stat & 0x01) {
481 dma_stat = ioread8(bmdma + 2);
483 if (dma_stat & 0x01) {
484 /* Clear the engine */
485 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
488 dma_cmd = ioread8(bmdma );
489 iowrite8(dma_cmd & 0xFE, bmdma);
491 dma_stat = ioread8(bmdma + 2);
492 iowrite8(dma_stat | 0x06 , bmdma + 2);
493 /* Clear the engine */
494 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
501 * hpt372_set_piomode - PIO setup
503 * @adev: device on the interface
505 * Perform PIO mode setup.
508 static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev)
510 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
516 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
517 addr2 = 0x51 + 4 * ap->port_no;
519 /* Fast interrupt prediction disable, hold off interrupt disable */
520 pci_read_config_byte(pdev, addr2, &fast);
522 pci_write_config_byte(pdev, addr2, fast);
524 pci_read_config_dword(pdev, addr1, ®);
525 mode = hpt37x_find_mode(ap, adev->pio_mode);
527 printk("Find mode for %d reports %X\n", adev->pio_mode, mode);
528 mode &= ~0x80000000; /* No FIFO in PIO */
529 mode &= ~0x30070000; /* Leave config bits alone */
530 reg &= 0x30070000; /* Strip timing bits */
531 pci_write_config_dword(pdev, addr1, reg | mode);
535 * hpt372_set_dmamode - DMA timing setup
537 * @adev: Device being configured
539 * Set up the channel for MWDMA or UDMA modes. Much the same as with
540 * PIO, load the mode number and then set MWDMA or UDMA flag.
543 static void hpt372_set_dmamode(struct ata_port *ap, struct ata_device *adev)
545 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
551 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
552 addr2 = 0x51 + 4 * ap->port_no;
554 /* Fast interrupt prediction disable, hold off interrupt disable */
555 pci_read_config_byte(pdev, addr2, &fast);
557 pci_write_config_byte(pdev, addr2, fast);
559 pci_read_config_dword(pdev, addr1, ®);
560 mode = hpt37x_find_mode(ap, adev->dma_mode);
561 printk("Find mode for DMA %d reports %X\n", adev->dma_mode, mode);
562 mode &= ~0xC0000000; /* Leave config bits alone */
563 mode |= 0x80000000; /* FIFO in MWDMA or UDMA */
564 reg &= 0xC0000000; /* Strip timing bits */
565 pci_write_config_dword(pdev, addr1, reg | mode);
569 * hpt37x_bmdma_end - DMA engine stop
572 * Clean up after the HPT372 and later DMA engine
575 static void hpt37x_bmdma_stop(struct ata_queued_cmd *qc)
577 struct ata_port *ap = qc->ap;
578 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
579 int mscreg = 0x50 + 4 * ap->port_no;
580 u8 bwsr_stat, msc_stat;
582 pci_read_config_byte(pdev, 0x6A, &bwsr_stat);
583 pci_read_config_byte(pdev, mscreg, &msc_stat);
584 if (bwsr_stat & (1 << ap->port_no))
585 pci_write_config_byte(pdev, mscreg, msc_stat | 0x30);
590 static struct scsi_host_template hpt37x_sht = {
591 ATA_BMDMA_SHT(DRV_NAME),
595 * Configuration for HPT370
598 static struct ata_port_operations hpt370_port_ops = {
599 .inherits = &ata_bmdma_port_ops,
601 .bmdma_start = hpt370_bmdma_start,
602 .bmdma_stop = hpt370_bmdma_stop,
604 .mode_filter = hpt370_filter,
605 .set_piomode = hpt370_set_piomode,
606 .set_dmamode = hpt370_set_dmamode,
607 .prereset = hpt37x_pre_reset,
611 * Configuration for HPT370A. Close to 370 but less filters
614 static struct ata_port_operations hpt370a_port_ops = {
615 .inherits = &hpt370_port_ops,
616 .mode_filter = hpt370a_filter,
620 * Configuration for HPT372, HPT371, HPT302. Slightly different PIO
621 * and DMA mode setting functionality.
624 static struct ata_port_operations hpt372_port_ops = {
625 .inherits = &ata_bmdma_port_ops,
627 .bmdma_stop = hpt37x_bmdma_stop,
629 .set_piomode = hpt372_set_piomode,
630 .set_dmamode = hpt372_set_dmamode,
631 .prereset = hpt37x_pre_reset,
635 * Configuration for HPT374. Mode setting works like 372 and friends
636 * but we have a different cable detection procedure for function 1.
639 static struct ata_port_operations hpt374_fn1_port_ops = {
640 .inherits = &hpt372_port_ops,
641 .prereset = hpt374_fn1_pre_reset,
645 * htp37x_clock_slot - Turn timing to PC clock entry
646 * @freq: Reported frequency timing
649 * Turn the timing data intoa clock slot (0 for 33, 1 for 40, 2 for 50
653 static int hpt37x_clock_slot(unsigned int freq, unsigned int base)
655 unsigned int f = (base * freq) / 192; /* Mhz */
657 return 0; /* 33Mhz slot */
659 return 1; /* 40Mhz slot */
661 return 2; /* 50Mhz slot */
662 return 3; /* 60Mhz slot */
666 * hpt37x_calibrate_dpll - Calibrate the DPLL loop
669 * Perform a calibration cycle on the HPT37x DPLL. Returns 1 if this
673 static int hpt37x_calibrate_dpll(struct pci_dev *dev)
679 for(tries = 0; tries < 0x5000; tries++) {
681 pci_read_config_byte(dev, 0x5b, ®5b);
683 /* See if it stays set */
684 for(tries = 0; tries < 0x1000; tries ++) {
685 pci_read_config_byte(dev, 0x5b, ®5b);
687 if ((reg5b & 0x80) == 0)
690 /* Turn off tuning, we have the DPLL set */
691 pci_read_config_dword(dev, 0x5c, ®5c);
692 pci_write_config_dword(dev, 0x5c, reg5c & ~ 0x100);
696 /* Never went stable */
700 static u32 hpt374_read_freq(struct pci_dev *pdev)
703 unsigned long io_base = pci_resource_start(pdev, 4);
704 if (PCI_FUNC(pdev->devfn) & 1) {
705 struct pci_dev *pdev_0;
707 pdev_0 = pci_get_slot(pdev->bus, pdev->devfn - 1);
708 /* Someone hot plugged the controller on us ? */
711 io_base = pci_resource_start(pdev_0, 4);
712 freq = inl(io_base + 0x90);
715 freq = inl(io_base + 0x90);
720 * hpt37x_init_one - Initialise an HPT37X/302
722 * @id: Entry in match table
724 * Initialise an HPT37x device. There are some interesting complications
725 * here. Firstly the chip may report 366 and be one of several variants.
726 * Secondly all the timings depend on the clock for the chip which we must
729 * This is the known chip mappings. It may be missing a couple of later
732 * Chip version PCI Rev Notes
733 * HPT366 4 (HPT366) 0 Other driver
734 * HPT366 4 (HPT366) 1 Other driver
735 * HPT368 4 (HPT366) 2 Other driver
736 * HPT370 4 (HPT366) 3 UDMA100
737 * HPT370A 4 (HPT366) 4 UDMA100
738 * HPT372 4 (HPT366) 5 UDMA133 (1)
739 * HPT372N 4 (HPT366) 6 Other driver
740 * HPT372A 5 (HPT372) 1 UDMA133 (1)
741 * HPT372N 5 (HPT372) 2 Other driver
742 * HPT302 6 (HPT302) 1 UDMA133
743 * HPT302N 6 (HPT302) 2 Other driver
744 * HPT371 7 (HPT371) * UDMA133
745 * HPT374 8 (HPT374) * UDMA133 4 channel
746 * HPT372N 9 (HPT372N) * Other driver
748 * (1) UDMA133 support depends on the bus clock
751 static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
753 /* HPT370 - UDMA100 */
754 static const struct ata_port_info info_hpt370 = {
755 .flags = ATA_FLAG_SLAVE_POSS,
758 .udma_mask = ATA_UDMA5,
759 .port_ops = &hpt370_port_ops
761 /* HPT370A - UDMA100 */
762 static const struct ata_port_info info_hpt370a = {
763 .flags = ATA_FLAG_SLAVE_POSS,
766 .udma_mask = ATA_UDMA5,
767 .port_ops = &hpt370a_port_ops
769 /* HPT370 - UDMA100 */
770 static const struct ata_port_info info_hpt370_33 = {
771 .flags = ATA_FLAG_SLAVE_POSS,
774 .udma_mask = ATA_UDMA5,
775 .port_ops = &hpt370_port_ops
777 /* HPT370A - UDMA100 */
778 static const struct ata_port_info info_hpt370a_33 = {
779 .flags = ATA_FLAG_SLAVE_POSS,
782 .udma_mask = ATA_UDMA5,
783 .port_ops = &hpt370a_port_ops
785 /* HPT371, 372 and friends - UDMA133 */
786 static const struct ata_port_info info_hpt372 = {
787 .flags = ATA_FLAG_SLAVE_POSS,
790 .udma_mask = ATA_UDMA6,
791 .port_ops = &hpt372_port_ops
793 /* HPT374 - UDMA100, function 1 uses different prereset method */
794 static const struct ata_port_info info_hpt374_fn0 = {
795 .flags = ATA_FLAG_SLAVE_POSS,
798 .udma_mask = ATA_UDMA5,
799 .port_ops = &hpt372_port_ops
801 static const struct ata_port_info info_hpt374_fn1 = {
802 .flags = ATA_FLAG_SLAVE_POSS,
805 .udma_mask = ATA_UDMA5,
806 .port_ops = &hpt374_fn1_port_ops
809 static const int MHz[4] = { 33, 40, 50, 66 };
810 void *private_data = NULL;
811 const struct ata_port_info *ppi[] = { NULL, NULL };
819 unsigned long iobase = pci_resource_start(dev, 4);
821 const struct hpt_chip *chip_table;
825 rc = pcim_enable_device(dev);
829 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
832 if (dev->device == PCI_DEVICE_ID_TTI_HPT366) {
833 /* May be a later chip in disguise. Check */
834 /* Older chips are in the HPT366 driver. Ignore them */
837 /* N series chips have their own driver. Ignore */
843 ppi[0] = &info_hpt370;
844 chip_table = &hpt370;
848 ppi[0] = &info_hpt370a;
849 chip_table = &hpt370a;
853 ppi[0] = &info_hpt372;
854 chip_table = &hpt372;
857 printk(KERN_ERR "pata_hpt37x: Unknown HPT366 subtype please report (%d).\n", class_rev);
861 switch(dev->device) {
862 case PCI_DEVICE_ID_TTI_HPT372:
863 /* 372N if rev >= 2*/
866 ppi[0] = &info_hpt372;
867 chip_table = &hpt372a;
869 case PCI_DEVICE_ID_TTI_HPT302:
870 /* 302N if rev > 1 */
873 ppi[0] = &info_hpt372;
875 chip_table = &hpt302;
877 case PCI_DEVICE_ID_TTI_HPT371:
880 ppi[0] = &info_hpt372;
881 chip_table = &hpt371;
882 /* Single channel device, master is not present
883 but the BIOS (or us for non x86) must mark it
885 pci_read_config_byte(dev, 0x50, &mcr1);
887 pci_write_config_byte(dev, 0x50, mcr1);
889 case PCI_DEVICE_ID_TTI_HPT374:
890 chip_table = &hpt374;
891 if (!(PCI_FUNC(dev->devfn) & 1))
892 *ppi = &info_hpt374_fn0;
894 *ppi = &info_hpt374_fn1;
897 printk(KERN_ERR "pata_hpt37x: PCI table is bogus please report (%d).\n", dev->device);
901 /* Ok so this is a chip we support */
903 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
904 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
905 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
906 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
908 pci_read_config_byte(dev, 0x5A, &irqmask);
910 pci_write_config_byte(dev, 0x5a, irqmask);
913 * default to pci clock. make sure MA15/16 are set to output
914 * to prevent drives having problems with 40-pin cables. Needed
915 * for some drives such as IBM-DTLA which will not enter ready
916 * state on reset when PDIAG is a input.
919 pci_write_config_byte(dev, 0x5b, 0x23);
922 * HighPoint does this for HPT372A.
923 * NOTE: This register is only writeable via I/O space.
925 if (chip_table == &hpt372a)
926 outb(0x0e, iobase + 0x9c);
928 /* Some devices do not let this value be accessed via PCI space
929 according to the old driver. In addition we must use the value
930 from FN 0 on the HPT374 */
932 if (chip_table == &hpt374) {
933 freq = hpt374_read_freq(dev);
937 freq = inl(iobase + 0x90);
939 if ((freq >> 12) != 0xABCDE) {
944 printk(KERN_WARNING "pata_hpt37x: BIOS has not set timing clocks.\n");
946 /* This is the process the HPT371 BIOS is reported to use */
947 for(i = 0; i < 128; i++) {
948 pci_read_config_byte(dev, 0x78, &sr);
957 * Turn the frequency check into a band and then find a timing
961 clock_slot = hpt37x_clock_slot(freq, chip_table->base);
962 if (chip_table->clocks[clock_slot] == NULL || prefer_dpll) {
964 * We need to try PLL mode instead
966 * For non UDMA133 capable devices we should
967 * use a 50MHz DPLL by choice
969 unsigned int f_low, f_high;
973 dpll = (ppi[0]->udma_mask & 0xC0) ? 3 : 2;
975 f_low = (MHz[clock_slot] * 48) / MHz[dpll];
980 /* Select the DPLL clock. */
981 pci_write_config_byte(dev, 0x5b, 0x21);
982 pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low | 0x100);
984 for(adjust = 0; adjust < 8; adjust++) {
985 if (hpt37x_calibrate_dpll(dev))
987 /* See if it'll settle at a fractionally different clock */
989 f_low -= adjust >> 1;
991 f_high += adjust >> 1;
992 pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low | 0x100);
995 printk(KERN_ERR "pata_hpt37x: DPLL did not stabilize!\n");
999 private_data = (void *)hpt37x_timings_66;
1001 private_data = (void *)hpt37x_timings_50;
1003 printk(KERN_INFO "pata_hpt37x: bus clock %dMHz, using %dMHz DPLL.\n",
1004 MHz[clock_slot], MHz[dpll]);
1006 private_data = (void *)chip_table->clocks[clock_slot];
1008 * Perform a final fixup. Note that we will have used the
1009 * DPLL on the HPT372 which means we don't have to worry
1010 * about lack of UDMA133 support on lower clocks
1013 if (clock_slot < 2 && ppi[0] == &info_hpt370)
1014 ppi[0] = &info_hpt370_33;
1015 if (clock_slot < 2 && ppi[0] == &info_hpt370a)
1016 ppi[0] = &info_hpt370a_33;
1017 printk(KERN_INFO "pata_hpt37x: %s using %dMHz bus clock.\n",
1018 chip_table->name, MHz[clock_slot]);
1021 /* Now kick off ATA set up */
1022 return ata_pci_sff_init_one(dev, ppi, &hpt37x_sht, private_data);
1025 static const struct pci_device_id hpt37x[] = {
1026 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
1027 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT371), },
1028 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT372), },
1029 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT374), },
1030 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT302), },
1035 static struct pci_driver hpt37x_pci_driver = {
1038 .probe = hpt37x_init_one,
1039 .remove = ata_pci_remove_one
1042 static int __init hpt37x_init(void)
1044 return pci_register_driver(&hpt37x_pci_driver);
1047 static void __exit hpt37x_exit(void)
1049 pci_unregister_driver(&hpt37x_pci_driver);
1052 MODULE_AUTHOR("Alan Cox");
1053 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT37x/30x");
1054 MODULE_LICENSE("GPL");
1055 MODULE_DEVICE_TABLE(pci, hpt37x);
1056 MODULE_VERSION(DRV_VERSION);
1058 module_init(hpt37x_init);
1059 module_exit(hpt37x_exit);