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
9 * Portions Copyright (C) 2001 Sun Microsystems, Inc.
10 * Portions Copyright (C) 2003 Red Hat Inc
14 * Look into engine reset on timeout errors. Should not be
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/pci.h>
21 #include <linux/init.h>
22 #include <linux/blkdev.h>
23 #include <linux/delay.h>
24 #include <scsi/scsi_host.h>
25 #include <linux/libata.h>
27 #define DRV_NAME "pata_hpt37x"
28 #define DRV_VERSION "0.5.1"
38 struct hpt_clock const *clocks[4];
41 /* key for bus clock timings
43 * 0:3 data_high_time. inactive time of DIOW_/DIOR_ for PIO and MW
44 * DMA. cycles = value + 1
45 * 4:8 data_low_time. active time of DIOW_/DIOR_ for PIO and MW
46 * DMA. cycles = value + 1
47 * 9:12 cmd_high_time. inactive time of DIOW_/DIOR_ during task file
49 * 13:17 cmd_low_time. active time of DIOW_/DIOR_ during task file
51 * 18:21 udma_cycle_time. clock freq and clock cycles for UDMA xfer.
52 * during task file register access.
53 * 22:24 pre_high_time. time to initialize 1st cycle for PIO and MW DMA
55 * 25:27 cmd_pre_high_time. time to initialize 1st PIO cycle for task
59 * 30 PIO_MST enable. if set, the chip is in bus master mode during
64 /* from highpoint documentation. these are old values */
65 static const struct hpt_clock hpt370_timings_33[] = {
66 /* { XFER_UDMA_5, 0x1A85F442, 0x16454e31 }, */
67 { XFER_UDMA_5, 0x16454e31 },
68 { XFER_UDMA_4, 0x16454e31 },
69 { XFER_UDMA_3, 0x166d4e31 },
70 { XFER_UDMA_2, 0x16494e31 },
71 { XFER_UDMA_1, 0x164d4e31 },
72 { XFER_UDMA_0, 0x16514e31 },
74 { XFER_MW_DMA_2, 0x26514e21 },
75 { XFER_MW_DMA_1, 0x26514e33 },
76 { XFER_MW_DMA_0, 0x26514e97 },
78 { XFER_PIO_4, 0x06514e21 },
79 { XFER_PIO_3, 0x06514e22 },
80 { XFER_PIO_2, 0x06514e33 },
81 { XFER_PIO_1, 0x06914e43 },
82 { XFER_PIO_0, 0x06914e57 },
86 static const struct hpt_clock hpt370_timings_66[] = {
87 { XFER_UDMA_5, 0x14846231 },
88 { XFER_UDMA_4, 0x14886231 },
89 { XFER_UDMA_3, 0x148c6231 },
90 { XFER_UDMA_2, 0x148c6231 },
91 { XFER_UDMA_1, 0x14906231 },
92 { XFER_UDMA_0, 0x14986231 },
94 { XFER_MW_DMA_2, 0x26514e21 },
95 { XFER_MW_DMA_1, 0x26514e33 },
96 { XFER_MW_DMA_0, 0x26514e97 },
98 { XFER_PIO_4, 0x06514e21 },
99 { XFER_PIO_3, 0x06514e22 },
100 { XFER_PIO_2, 0x06514e33 },
101 { XFER_PIO_1, 0x06914e43 },
102 { XFER_PIO_0, 0x06914e57 },
106 /* these are the current (4 sep 2001) timings from highpoint */
107 static const struct hpt_clock hpt370a_timings_33[] = {
108 { XFER_UDMA_5, 0x12446231 },
109 { XFER_UDMA_4, 0x12446231 },
110 { XFER_UDMA_3, 0x126c6231 },
111 { XFER_UDMA_2, 0x12486231 },
112 { XFER_UDMA_1, 0x124c6233 },
113 { XFER_UDMA_0, 0x12506297 },
115 { XFER_MW_DMA_2, 0x22406c31 },
116 { XFER_MW_DMA_1, 0x22406c33 },
117 { XFER_MW_DMA_0, 0x22406c97 },
119 { XFER_PIO_4, 0x06414e31 },
120 { XFER_PIO_3, 0x06414e42 },
121 { XFER_PIO_2, 0x06414e53 },
122 { XFER_PIO_1, 0x06814e93 },
123 { XFER_PIO_0, 0x06814ea7 },
127 /* 2x 33MHz timings */
128 static const struct hpt_clock hpt370a_timings_66[] = {
129 { XFER_UDMA_5, 0x1488e673 },
130 { XFER_UDMA_4, 0x1488e673 },
131 { XFER_UDMA_3, 0x1498e673 },
132 { XFER_UDMA_2, 0x1490e673 },
133 { XFER_UDMA_1, 0x1498e677 },
134 { XFER_UDMA_0, 0x14a0e73f },
136 { XFER_MW_DMA_2, 0x2480fa73 },
137 { XFER_MW_DMA_1, 0x2480fa77 },
138 { XFER_MW_DMA_0, 0x2480fb3f },
140 { XFER_PIO_4, 0x0c82be73 },
141 { XFER_PIO_3, 0x0c82be95 },
142 { XFER_PIO_2, 0x0c82beb7 },
143 { XFER_PIO_1, 0x0d02bf37 },
144 { XFER_PIO_0, 0x0d02bf5f },
148 static const struct hpt_clock hpt370a_timings_50[] = {
149 { XFER_UDMA_5, 0x12848242 },
150 { XFER_UDMA_4, 0x12ac8242 },
151 { XFER_UDMA_3, 0x128c8242 },
152 { XFER_UDMA_2, 0x120c8242 },
153 { XFER_UDMA_1, 0x12148254 },
154 { XFER_UDMA_0, 0x121882ea },
156 { XFER_MW_DMA_2, 0x22808242 },
157 { XFER_MW_DMA_1, 0x22808254 },
158 { XFER_MW_DMA_0, 0x228082ea },
160 { XFER_PIO_4, 0x0a81f442 },
161 { XFER_PIO_3, 0x0a81f443 },
162 { XFER_PIO_2, 0x0a81f454 },
163 { XFER_PIO_1, 0x0ac1f465 },
164 { XFER_PIO_0, 0x0ac1f48a },
168 static const struct hpt_clock hpt372_timings_33[] = {
169 { XFER_UDMA_6, 0x1c81dc62 },
170 { XFER_UDMA_5, 0x1c6ddc62 },
171 { XFER_UDMA_4, 0x1c8ddc62 },
172 { XFER_UDMA_3, 0x1c8edc62 }, /* checkme */
173 { XFER_UDMA_2, 0x1c91dc62 },
174 { XFER_UDMA_1, 0x1c9adc62 }, /* checkme */
175 { XFER_UDMA_0, 0x1c82dc62 }, /* checkme */
177 { XFER_MW_DMA_2, 0x2c829262 },
178 { XFER_MW_DMA_1, 0x2c829266 }, /* checkme */
179 { XFER_MW_DMA_0, 0x2c82922e }, /* checkme */
181 { XFER_PIO_4, 0x0c829c62 },
182 { XFER_PIO_3, 0x0c829c84 },
183 { XFER_PIO_2, 0x0c829ca6 },
184 { XFER_PIO_1, 0x0d029d26 },
185 { XFER_PIO_0, 0x0d029d5e },
189 static const struct hpt_clock hpt372_timings_50[] = {
190 { XFER_UDMA_5, 0x12848242 },
191 { XFER_UDMA_4, 0x12ac8242 },
192 { XFER_UDMA_3, 0x128c8242 },
193 { XFER_UDMA_2, 0x120c8242 },
194 { XFER_UDMA_1, 0x12148254 },
195 { XFER_UDMA_0, 0x121882ea },
197 { XFER_MW_DMA_2, 0x22808242 },
198 { XFER_MW_DMA_1, 0x22808254 },
199 { XFER_MW_DMA_0, 0x228082ea },
201 { XFER_PIO_4, 0x0a81f442 },
202 { XFER_PIO_3, 0x0a81f443 },
203 { XFER_PIO_2, 0x0a81f454 },
204 { XFER_PIO_1, 0x0ac1f465 },
205 { XFER_PIO_0, 0x0ac1f48a },
209 static const struct hpt_clock hpt372_timings_66[] = {
210 { XFER_UDMA_6, 0x1c869c62 },
211 { XFER_UDMA_5, 0x1cae9c62 },
212 { XFER_UDMA_4, 0x1c8a9c62 },
213 { XFER_UDMA_3, 0x1c8e9c62 },
214 { XFER_UDMA_2, 0x1c929c62 },
215 { XFER_UDMA_1, 0x1c9a9c62 },
216 { XFER_UDMA_0, 0x1c829c62 },
218 { XFER_MW_DMA_2, 0x2c829c62 },
219 { XFER_MW_DMA_1, 0x2c829c66 },
220 { XFER_MW_DMA_0, 0x2c829d2e },
222 { XFER_PIO_4, 0x0c829c62 },
223 { XFER_PIO_3, 0x0c829c84 },
224 { XFER_PIO_2, 0x0c829ca6 },
225 { XFER_PIO_1, 0x0d029d26 },
226 { XFER_PIO_0, 0x0d029d5e },
230 static const struct hpt_clock hpt374_timings_33[] = {
231 { XFER_UDMA_6, 0x12808242 },
232 { XFER_UDMA_5, 0x12848242 },
233 { XFER_UDMA_4, 0x12ac8242 },
234 { XFER_UDMA_3, 0x128c8242 },
235 { XFER_UDMA_2, 0x120c8242 },
236 { XFER_UDMA_1, 0x12148254 },
237 { XFER_UDMA_0, 0x121882ea },
239 { XFER_MW_DMA_2, 0x22808242 },
240 { XFER_MW_DMA_1, 0x22808254 },
241 { XFER_MW_DMA_0, 0x228082ea },
243 { XFER_PIO_4, 0x0a81f442 },
244 { XFER_PIO_3, 0x0a81f443 },
245 { XFER_PIO_2, 0x0a81f454 },
246 { XFER_PIO_1, 0x0ac1f465 },
247 { XFER_PIO_0, 0x0ac1f48a },
251 static const struct hpt_chip hpt370 = {
262 static const struct hpt_chip hpt370a = {
273 static const struct hpt_chip hpt372 = {
284 static const struct hpt_chip hpt302 = {
295 static const struct hpt_chip hpt371 = {
306 static const struct hpt_chip hpt372a = {
317 static const struct hpt_chip hpt374 = {
329 * hpt37x_find_mode - reset the hpt37x bus
331 * @speed: transfer mode
333 * Return the 32bit register programming information for this channel
334 * that matches the speed provided.
337 static u32 hpt37x_find_mode(struct ata_port *ap, int speed)
339 struct hpt_clock *clocks = ap->host->private_data;
341 while(clocks->xfer_speed) {
342 if (clocks->xfer_speed == speed)
343 return clocks->timing;
347 return 0xffffffffU; /* silence compiler warning */
350 static int hpt_dma_blacklisted(const struct ata_device *dev, char *modestr, const char *list[])
352 unsigned char model_num[40];
357 ata_id_string(dev->id, model_num, ATA_ID_PROD_OFS,
360 len = strnlen(s, sizeof(model_num));
362 /* ATAPI specifies that empty space is blank-filled; remove blanks */
363 while ((len > 0) && (s[len - 1] == ' ')) {
368 while(list[i] != NULL) {
369 if (!strncmp(list[i], s, len)) {
370 printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n",
379 static const char *bad_ata33[] = {
380 "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", "Maxtor 90845U3", "Maxtor 90650U2",
381 "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
382 "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
384 "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
385 "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
386 "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
390 static const char *bad_ata100_5[] = {
410 * hpt370_filter - mode selection filter
414 * Block UDMA on devices that cause trouble with this controller.
417 static unsigned long hpt370_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask)
419 if (adev->class != ATA_DEV_ATA) {
420 if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
421 mask &= ~ATA_MASK_UDMA;
422 if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5))
423 mask &= ~(0x1F << ATA_SHIFT_UDMA);
425 return ata_pci_default_filter(ap, adev, mask);
429 * hpt370a_filter - mode selection filter
433 * Block UDMA on devices that cause trouble with this controller.
436 static unsigned long hpt370a_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask)
438 if (adev->class != ATA_DEV_ATA) {
439 if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5))
440 mask &= ~ (0x1F << ATA_SHIFT_UDMA);
442 return ata_pci_default_filter(ap, adev, mask);
446 * hpt37x_pre_reset - reset the hpt37x bus
447 * @ap: ATA port to reset
449 * Perform the initial reset handling for the 370/372 and 374 func 0
452 static int hpt37x_pre_reset(struct ata_port *ap)
455 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
456 static const struct pci_bits hpt37x_enable_bits[] = {
457 { 0x50, 1, 0x04, 0x04 },
458 { 0x54, 1, 0x04, 0x04 }
460 if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
463 pci_read_config_byte(pdev, 0x5B, &scr2);
464 pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01);
465 /* Cable register now active */
466 pci_read_config_byte(pdev, 0x5A, &ata66);
468 pci_write_config_byte(pdev, 0x5B, scr2);
470 if (ata66 & (1 << ap->port_no))
471 ap->cbl = ATA_CBL_PATA40;
473 ap->cbl = ATA_CBL_PATA80;
475 /* Reset the state machine */
476 pci_write_config_byte(pdev, 0x50, 0x37);
477 pci_write_config_byte(pdev, 0x54, 0x37);
480 return ata_std_prereset(ap);
484 * hpt37x_error_handler - reset the hpt374
485 * @ap: ATA port to reset
487 * Perform probe for HPT37x, except for HPT374 channel 2
490 static void hpt37x_error_handler(struct ata_port *ap)
492 ata_bmdma_drive_eh(ap, hpt37x_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
495 static int hpt374_pre_reset(struct ata_port *ap)
497 static const struct pci_bits hpt37x_enable_bits[] = {
498 { 0x50, 1, 0x04, 0x04 },
499 { 0x54, 1, 0x04, 0x04 }
503 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
505 if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
508 /* Do the extra channel work */
509 pci_read_config_word(pdev, 0x52, &mcr3);
510 pci_read_config_word(pdev, 0x56, &mcr6);
511 /* Set bit 15 of 0x52 to enable TCBLID as input
512 Set bit 15 of 0x56 to enable FCBLID as input
514 pci_write_config_word(pdev, 0x52, mcr3 | 0x8000);
515 pci_write_config_word(pdev, 0x56, mcr6 | 0x8000);
516 pci_read_config_byte(pdev, 0x5A, &ata66);
517 /* Reset TCBLID/FCBLID to output */
518 pci_write_config_word(pdev, 0x52, mcr3);
519 pci_write_config_word(pdev, 0x56, mcr6);
521 if (ata66 & (1 << ap->port_no))
522 ap->cbl = ATA_CBL_PATA40;
524 ap->cbl = ATA_CBL_PATA80;
526 /* Reset the state machine */
527 pci_write_config_byte(pdev, 0x50, 0x37);
528 pci_write_config_byte(pdev, 0x54, 0x37);
531 return ata_std_prereset(ap);
535 * hpt374_error_handler - reset the hpt374
538 * The 374 cable detect is a little different due to the extra
539 * channels. The function 0 channels work like usual but function 1
543 static void hpt374_error_handler(struct ata_port *ap)
545 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
547 if (!(PCI_FUNC(pdev->devfn) & 1))
548 hpt37x_error_handler(ap);
550 ata_bmdma_drive_eh(ap, hpt374_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
554 * hpt370_set_piomode - PIO setup
556 * @adev: device on the interface
558 * Perform PIO mode setup.
561 static void hpt370_set_piomode(struct ata_port *ap, struct ata_device *adev)
563 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
569 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
570 addr2 = 0x51 + 4 * ap->port_no;
572 /* Fast interrupt prediction disable, hold off interrupt disable */
573 pci_read_config_byte(pdev, addr2, &fast);
576 pci_write_config_byte(pdev, addr2, fast);
578 pci_read_config_dword(pdev, addr1, ®);
579 mode = hpt37x_find_mode(ap, adev->pio_mode);
580 mode &= ~0x8000000; /* No FIFO in PIO */
581 mode &= ~0x30070000; /* Leave config bits alone */
582 reg &= 0x30070000; /* Strip timing bits */
583 pci_write_config_dword(pdev, addr1, reg | mode);
587 * hpt370_set_dmamode - DMA timing setup
589 * @adev: Device being configured
591 * Set up the channel for MWDMA or UDMA modes. Much the same as with
592 * PIO, load the mode number and then set MWDMA or UDMA flag.
595 static void hpt370_set_dmamode(struct ata_port *ap, struct ata_device *adev)
597 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
603 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
604 addr2 = 0x51 + 4 * ap->port_no;
606 /* Fast interrupt prediction disable, hold off interrupt disable */
607 pci_read_config_byte(pdev, addr2, &fast);
610 pci_write_config_byte(pdev, addr2, fast);
612 pci_read_config_dword(pdev, addr1, ®);
613 mode = hpt37x_find_mode(ap, adev->dma_mode);
614 mode |= 0x8000000; /* FIFO in MWDMA or UDMA */
615 mode &= ~0xC0000000; /* Leave config bits alone */
616 reg &= 0xC0000000; /* Strip timing bits */
617 pci_write_config_dword(pdev, addr1, reg | mode);
621 * hpt370_bmdma_start - DMA engine begin
624 * The 370 and 370A want us to reset the DMA engine each time we
625 * use it. The 372 and later are fine.
628 static void hpt370_bmdma_start(struct ata_queued_cmd *qc)
630 struct ata_port *ap = qc->ap;
631 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
632 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
638 * hpt370_bmdma_end - DMA engine stop
641 * Work around the HPT370 DMA engine.
644 static void hpt370_bmdma_stop(struct ata_queued_cmd *qc)
646 struct ata_port *ap = qc->ap;
647 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
648 u8 dma_stat = inb(ap->ioaddr.bmdma_addr + 2);
650 unsigned long bmdma = ap->ioaddr.bmdma_addr;
652 if (dma_stat & 0x01) {
654 dma_stat = inb(bmdma + 2);
656 if (dma_stat & 0x01) {
657 /* Clear the engine */
658 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
661 dma_cmd = inb(bmdma );
662 outb(dma_cmd & 0xFE, bmdma);
664 dma_stat = inb(bmdma + 2);
665 outb(dma_stat | 0x06 , bmdma + 2);
666 /* Clear the engine */
667 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
674 * hpt372_set_piomode - PIO setup
676 * @adev: device on the interface
678 * Perform PIO mode setup.
681 static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev)
683 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
689 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
690 addr2 = 0x51 + 4 * ap->port_no;
692 /* Fast interrupt prediction disable, hold off interrupt disable */
693 pci_read_config_byte(pdev, addr2, &fast);
695 pci_write_config_byte(pdev, addr2, fast);
697 pci_read_config_dword(pdev, addr1, ®);
698 mode = hpt37x_find_mode(ap, adev->pio_mode);
700 printk("Find mode for %d reports %X\n", adev->pio_mode, mode);
701 mode &= ~0x80000000; /* No FIFO in PIO */
702 mode &= ~0x30070000; /* Leave config bits alone */
703 reg &= 0x30070000; /* Strip timing bits */
704 pci_write_config_dword(pdev, addr1, reg | mode);
708 * hpt372_set_dmamode - DMA timing setup
710 * @adev: Device being configured
712 * Set up the channel for MWDMA or UDMA modes. Much the same as with
713 * PIO, load the mode number and then set MWDMA or UDMA flag.
716 static void hpt372_set_dmamode(struct ata_port *ap, struct ata_device *adev)
718 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
724 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
725 addr2 = 0x51 + 4 * ap->port_no;
727 /* Fast interrupt prediction disable, hold off interrupt disable */
728 pci_read_config_byte(pdev, addr2, &fast);
730 pci_write_config_byte(pdev, addr2, fast);
732 pci_read_config_dword(pdev, addr1, ®);
733 mode = hpt37x_find_mode(ap, adev->dma_mode);
734 printk("Find mode for DMA %d reports %X\n", adev->dma_mode, mode);
735 mode &= ~0xC0000000; /* Leave config bits alone */
736 mode |= 0x80000000; /* FIFO in MWDMA or UDMA */
737 reg &= 0xC0000000; /* Strip timing bits */
738 pci_write_config_dword(pdev, addr1, reg | mode);
742 * hpt37x_bmdma_end - DMA engine stop
745 * Clean up after the HPT372 and later DMA engine
748 static void hpt37x_bmdma_stop(struct ata_queued_cmd *qc)
750 struct ata_port *ap = qc->ap;
751 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
752 int mscreg = 0x50 + 2 * ap->port_no;
753 u8 bwsr_stat, msc_stat;
755 pci_read_config_byte(pdev, 0x6A, &bwsr_stat);
756 pci_read_config_byte(pdev, mscreg, &msc_stat);
757 if (bwsr_stat & (1 << ap->port_no))
758 pci_write_config_byte(pdev, mscreg, msc_stat | 0x30);
763 static struct scsi_host_template hpt37x_sht = {
764 .module = THIS_MODULE,
766 .ioctl = ata_scsi_ioctl,
767 .queuecommand = ata_scsi_queuecmd,
768 .can_queue = ATA_DEF_QUEUE,
769 .this_id = ATA_SHT_THIS_ID,
770 .sg_tablesize = LIBATA_MAX_PRD,
771 .max_sectors = ATA_MAX_SECTORS,
772 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
773 .emulated = ATA_SHT_EMULATED,
774 .use_clustering = ATA_SHT_USE_CLUSTERING,
775 .proc_name = DRV_NAME,
776 .dma_boundary = ATA_DMA_BOUNDARY,
777 .slave_configure = ata_scsi_slave_config,
778 .slave_destroy = ata_scsi_slave_destroy,
779 .bios_param = ata_std_bios_param,
783 * Configuration for HPT370
786 static struct ata_port_operations hpt370_port_ops = {
787 .port_disable = ata_port_disable,
788 .set_piomode = hpt370_set_piomode,
789 .set_dmamode = hpt370_set_dmamode,
790 .mode_filter = hpt370_filter,
792 .tf_load = ata_tf_load,
793 .tf_read = ata_tf_read,
794 .check_status = ata_check_status,
795 .exec_command = ata_exec_command,
796 .dev_select = ata_std_dev_select,
798 .freeze = ata_bmdma_freeze,
799 .thaw = ata_bmdma_thaw,
800 .error_handler = hpt37x_error_handler,
801 .post_internal_cmd = ata_bmdma_post_internal_cmd,
803 .bmdma_setup = ata_bmdma_setup,
804 .bmdma_start = hpt370_bmdma_start,
805 .bmdma_stop = hpt370_bmdma_stop,
806 .bmdma_status = ata_bmdma_status,
808 .qc_prep = ata_qc_prep,
809 .qc_issue = ata_qc_issue_prot,
811 .data_xfer = ata_pio_data_xfer,
813 .irq_handler = ata_interrupt,
814 .irq_clear = ata_bmdma_irq_clear,
816 .port_start = ata_port_start,
817 .port_stop = ata_port_stop,
818 .host_stop = ata_host_stop
822 * Configuration for HPT370A. Close to 370 but less filters
825 static struct ata_port_operations hpt370a_port_ops = {
826 .port_disable = ata_port_disable,
827 .set_piomode = hpt370_set_piomode,
828 .set_dmamode = hpt370_set_dmamode,
829 .mode_filter = hpt370a_filter,
831 .tf_load = ata_tf_load,
832 .tf_read = ata_tf_read,
833 .check_status = ata_check_status,
834 .exec_command = ata_exec_command,
835 .dev_select = ata_std_dev_select,
837 .freeze = ata_bmdma_freeze,
838 .thaw = ata_bmdma_thaw,
839 .error_handler = hpt37x_error_handler,
840 .post_internal_cmd = ata_bmdma_post_internal_cmd,
842 .bmdma_setup = ata_bmdma_setup,
843 .bmdma_start = hpt370_bmdma_start,
844 .bmdma_stop = hpt370_bmdma_stop,
845 .bmdma_status = ata_bmdma_status,
847 .qc_prep = ata_qc_prep,
848 .qc_issue = ata_qc_issue_prot,
850 .data_xfer = ata_pio_data_xfer,
852 .irq_handler = ata_interrupt,
853 .irq_clear = ata_bmdma_irq_clear,
855 .port_start = ata_port_start,
856 .port_stop = ata_port_stop,
857 .host_stop = ata_host_stop
861 * Configuration for HPT372, HPT371, HPT302. Slightly different PIO
862 * and DMA mode setting functionality.
865 static struct ata_port_operations hpt372_port_ops = {
866 .port_disable = ata_port_disable,
867 .set_piomode = hpt372_set_piomode,
868 .set_dmamode = hpt372_set_dmamode,
869 .mode_filter = ata_pci_default_filter,
871 .tf_load = ata_tf_load,
872 .tf_read = ata_tf_read,
873 .check_status = ata_check_status,
874 .exec_command = ata_exec_command,
875 .dev_select = ata_std_dev_select,
877 .freeze = ata_bmdma_freeze,
878 .thaw = ata_bmdma_thaw,
879 .error_handler = hpt37x_error_handler,
880 .post_internal_cmd = ata_bmdma_post_internal_cmd,
882 .bmdma_setup = ata_bmdma_setup,
883 .bmdma_start = ata_bmdma_start,
884 .bmdma_stop = hpt37x_bmdma_stop,
885 .bmdma_status = ata_bmdma_status,
887 .qc_prep = ata_qc_prep,
888 .qc_issue = ata_qc_issue_prot,
890 .data_xfer = ata_pio_data_xfer,
892 .irq_handler = ata_interrupt,
893 .irq_clear = ata_bmdma_irq_clear,
895 .port_start = ata_port_start,
896 .port_stop = ata_port_stop,
897 .host_stop = ata_host_stop
901 * Configuration for HPT374. Mode setting works like 372 and friends
902 * but we have a different cable detection procedure.
905 static struct ata_port_operations hpt374_port_ops = {
906 .port_disable = ata_port_disable,
907 .set_piomode = hpt372_set_piomode,
908 .set_dmamode = hpt372_set_dmamode,
909 .mode_filter = ata_pci_default_filter,
911 .tf_load = ata_tf_load,
912 .tf_read = ata_tf_read,
913 .check_status = ata_check_status,
914 .exec_command = ata_exec_command,
915 .dev_select = ata_std_dev_select,
917 .freeze = ata_bmdma_freeze,
918 .thaw = ata_bmdma_thaw,
919 .error_handler = hpt374_error_handler,
920 .post_internal_cmd = ata_bmdma_post_internal_cmd,
922 .bmdma_setup = ata_bmdma_setup,
923 .bmdma_start = ata_bmdma_start,
924 .bmdma_stop = hpt37x_bmdma_stop,
925 .bmdma_status = ata_bmdma_status,
927 .qc_prep = ata_qc_prep,
928 .qc_issue = ata_qc_issue_prot,
930 .data_xfer = ata_pio_data_xfer,
932 .irq_handler = ata_interrupt,
933 .irq_clear = ata_bmdma_irq_clear,
935 .port_start = ata_port_start,
936 .port_stop = ata_port_stop,
937 .host_stop = ata_host_stop
941 * htp37x_clock_slot - Turn timing to PC clock entry
942 * @freq: Reported frequency timing
945 * Turn the timing data intoa clock slot (0 for 33, 1 for 40, 2 for 50
949 static int hpt37x_clock_slot(unsigned int freq, unsigned int base)
951 unsigned int f = (base * freq) / 192; /* Mhz */
953 return 0; /* 33Mhz slot */
955 return 1; /* 40Mhz slot */
957 return 2; /* 50Mhz slot */
958 return 3; /* 60Mhz slot */
962 * hpt37x_calibrate_dpll - Calibrate the DPLL loop
965 * Perform a calibration cycle on the HPT37x DPLL. Returns 1 if this
969 static int hpt37x_calibrate_dpll(struct pci_dev *dev)
975 for(tries = 0; tries < 0x5000; tries++) {
977 pci_read_config_byte(dev, 0x5b, ®5b);
979 /* See if it stays set */
980 for(tries = 0; tries < 0x1000; tries ++) {
981 pci_read_config_byte(dev, 0x5b, ®5b);
983 if ((reg5b & 0x80) == 0)
986 /* Turn off tuning, we have the DPLL set */
987 pci_read_config_dword(dev, 0x5c, ®5c);
988 pci_write_config_dword(dev, 0x5c, reg5c & ~ 0x100);
992 /* Never went stable */
996 * hpt37x_init_one - Initialise an HPT37X/302
998 * @id: Entry in match table
1000 * Initialise an HPT37x device. There are some interesting complications
1001 * here. Firstly the chip may report 366 and be one of several variants.
1002 * Secondly all the timings depend on the clock for the chip which we must
1003 * detect and look up
1005 * This is the known chip mappings. It may be missing a couple of later
1008 * Chip version PCI Rev Notes
1009 * HPT366 4 (HPT366) 0 Other driver
1010 * HPT366 4 (HPT366) 1 Other driver
1011 * HPT368 4 (HPT366) 2 Other driver
1012 * HPT370 4 (HPT366) 3 UDMA100
1013 * HPT370A 4 (HPT366) 4 UDMA100
1014 * HPT372 4 (HPT366) 5 UDMA133 (1)
1015 * HPT372N 4 (HPT366) 6 Other driver
1016 * HPT372A 5 (HPT372) 1 UDMA133 (1)
1017 * HPT372N 5 (HPT372) 2 Other driver
1018 * HPT302 6 (HPT302) 1 UDMA133
1019 * HPT302N 6 (HPT302) 2 Other driver
1020 * HPT371 7 (HPT371) * UDMA133
1021 * HPT374 8 (HPT374) * UDMA133 4 channel
1022 * HPT372N 9 (HPT372N) * Other driver
1024 * (1) UDMA133 support depends on the bus clock
1027 static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
1029 /* HPT370 - UDMA100 */
1030 static struct ata_port_info info_hpt370 = {
1032 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1036 .port_ops = &hpt370_port_ops
1038 /* HPT370A - UDMA100 */
1039 static struct ata_port_info info_hpt370a = {
1041 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1045 .port_ops = &hpt370a_port_ops
1047 /* HPT371, 372 and friends - UDMA133 */
1048 static struct ata_port_info info_hpt372 = {
1050 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1054 .port_ops = &hpt372_port_ops
1056 /* HPT371, 372 and friends - UDMA100 at 50MHz clock */
1057 static struct ata_port_info info_hpt372_50 = {
1059 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1063 .port_ops = &hpt372_port_ops
1065 /* HPT374 - UDMA133 */
1066 static struct ata_port_info info_hpt374 = {
1068 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1072 .port_ops = &hpt374_port_ops
1075 static const int MHz[4] = { 33, 40, 50, 66 };
1077 struct ata_port_info *port_info[2];
1078 struct ata_port_info *port;
1084 const struct hpt_chip *chip_table;
1087 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
1090 if (dev->device == PCI_DEVICE_ID_TTI_HPT366) {
1091 /* May be a later chip in disguise. Check */
1092 /* Older chips are in the HPT366 driver. Ignore them */
1095 /* N series chips have their own driver. Ignore */
1101 port = &info_hpt370;
1102 chip_table = &hpt370;
1105 port = &info_hpt370a;
1106 chip_table = &hpt370a;
1109 port = &info_hpt372;
1110 chip_table = &hpt372;
1113 printk(KERN_ERR "pata_hpt37x: Unknown HPT366 subtype please report (%d).\n", class_rev);
1117 switch(dev->device) {
1118 case PCI_DEVICE_ID_TTI_HPT372:
1119 /* 372N if rev >= 2*/
1122 port = &info_hpt372;
1123 chip_table = &hpt372a;
1125 case PCI_DEVICE_ID_TTI_HPT302:
1126 /* 302N if rev > 1 */
1129 port = &info_hpt372;
1131 chip_table = &hpt302;
1133 case PCI_DEVICE_ID_TTI_HPT371:
1134 port = &info_hpt372;
1135 chip_table = &hpt371;
1137 case PCI_DEVICE_ID_TTI_HPT374:
1138 chip_table = &hpt374;
1139 port = &info_hpt374;
1142 printk(KERN_ERR "pata_hpt37x: PCI table is bogus please report (%d).\n", dev->device);
1146 /* Ok so this is a chip we support */
1148 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
1149 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
1150 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
1151 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
1153 pci_read_config_byte(dev, 0x5A, &irqmask);
1155 pci_write_config_byte(dev, 0x5a, irqmask);
1158 * default to pci clock. make sure MA15/16 are set to output
1159 * to prevent drives having problems with 40-pin cables. Needed
1160 * for some drives such as IBM-DTLA which will not enter ready
1161 * state on reset when PDIAG is a input.
1164 pci_write_config_byte(dev, 0x5b, 0x23);
1166 pci_read_config_dword(dev, 0x70, &freq);
1167 if ((freq >> 12) != 0xABCDE) {
1172 printk(KERN_WARNING "pata_hpt37x: BIOS has not set timing clocks.\n");
1174 /* This is the process the HPT371 BIOS is reported to use */
1175 for(i = 0; i < 128; i++) {
1176 pci_read_config_byte(dev, 0x78, &sr);
1185 * Turn the frequency check into a band and then find a timing
1186 * table to match it.
1189 clock_slot = hpt37x_clock_slot(freq, chip_table->base);
1190 if (chip_table->clocks[clock_slot] == NULL) {
1192 * We need to try PLL mode instead
1194 unsigned int f_low = (MHz[clock_slot] * chip_table->base) / 192;
1195 unsigned int f_high = f_low + 2;
1198 for(adjust = 0; adjust < 8; adjust++) {
1199 if (hpt37x_calibrate_dpll(dev))
1201 /* See if it'll settle at a fractionally different clock */
1202 if ((adjust & 3) == 3) {
1206 pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low);
1209 printk(KERN_WARNING "hpt37x: DPLL did not stabilize.\n");
1212 /* Check if this works for all cases */
1213 port->private_data = (void *)hpt370_timings_66;
1215 printk(KERN_INFO "hpt37x: Bus clock %dMHz, using DPLL.\n", MHz[clock_slot]);
1217 port->private_data = (void *)chip_table->clocks[clock_slot];
1219 * Perform a final fixup. The 371 and 372 clock determines
1220 * if UDMA133 is available.
1223 if (clock_slot == 2 && chip_table == &hpt372) { /* 50Mhz */
1224 printk(KERN_WARNING "pata_hpt37x: No UDMA133 support available with 50MHz bus clock.\n");
1225 if (port == &info_hpt372)
1226 port = &info_hpt372_50;
1229 printk(KERN_INFO "hpt37x: %s: Bus clock %dMHz.\n", chip_table->name, MHz[clock_slot]);
1231 port_info[0] = port_info[1] = port;
1232 /* Now kick off ATA set up */
1233 return ata_pci_init_one(dev, port_info, 2);
1236 static const struct pci_device_id hpt37x[] = {
1237 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
1238 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT371), },
1239 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT372), },
1240 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT374), },
1241 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT302), },
1246 static struct pci_driver hpt37x_pci_driver = {
1249 .probe = hpt37x_init_one,
1250 .remove = ata_pci_remove_one
1253 static int __init hpt37x_init(void)
1255 return pci_register_driver(&hpt37x_pci_driver);
1258 static void __exit hpt37x_exit(void)
1260 pci_unregister_driver(&hpt37x_pci_driver);
1263 MODULE_AUTHOR("Alan Cox");
1264 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT37x/30x");
1265 MODULE_LICENSE("GPL");
1266 MODULE_DEVICE_TABLE(pci, hpt37x);
1267 MODULE_VERSION(DRV_VERSION);
1269 module_init(hpt37x_init);
1270 module_exit(hpt37x_exit);