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
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"
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);
457 pci_read_config_byte(pdev, 0x5B, &scr2);
458 pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01);
459 /* Cable register now active */
460 pci_read_config_byte(pdev, 0x5A, &ata66);
462 pci_write_config_byte(pdev, 0x5B, scr2);
464 if (ata66 & (1 << ap->port_no))
465 ap->cbl = ATA_CBL_PATA40;
467 ap->cbl = ATA_CBL_PATA80;
469 /* Reset the state machine */
470 pci_write_config_byte(pdev, 0x50, 0x37);
471 pci_write_config_byte(pdev, 0x54, 0x37);
474 return ata_std_prereset(ap);
478 * hpt37x_error_handler - reset the hpt374
479 * @ap: ATA port to reset
481 * Perform probe for HPT37x, except for HPT374 channel 2
484 static void hpt37x_error_handler(struct ata_port *ap)
486 ata_bmdma_drive_eh(ap, hpt37x_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
489 static int hpt374_pre_reset(struct ata_port *ap)
494 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
495 /* Do the extra channel work */
496 pci_read_config_word(pdev, 0x52, &mcr3);
497 pci_read_config_word(pdev, 0x56, &mcr6);
498 /* Set bit 15 of 0x52 to enable TCBLID as input
499 Set bit 15 of 0x56 to enable FCBLID as input
501 pci_write_config_word(pdev, 0x52, mcr3 | 0x8000);
502 pci_write_config_word(pdev, 0x56, mcr6 | 0x8000);
503 pci_read_config_byte(pdev, 0x5A, &ata66);
504 /* Reset TCBLID/FCBLID to output */
505 pci_write_config_word(pdev, 0x52, mcr3);
506 pci_write_config_word(pdev, 0x56, mcr6);
508 if (ata66 & (1 << ap->port_no))
509 ap->cbl = ATA_CBL_PATA40;
511 ap->cbl = ATA_CBL_PATA80;
513 /* Reset the state machine */
514 pci_write_config_byte(pdev, 0x50, 0x37);
515 pci_write_config_byte(pdev, 0x54, 0x37);
518 return ata_std_prereset(ap);
522 * hpt374_error_handler - reset the hpt374
525 * The 374 cable detect is a little different due to the extra
526 * channels. The function 0 channels work like usual but function 1
530 static void hpt374_error_handler(struct ata_port *ap)
532 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
534 if (!(PCI_FUNC(pdev->devfn) & 1))
535 hpt37x_error_handler(ap);
537 ata_bmdma_drive_eh(ap, hpt374_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
541 * hpt370_set_piomode - PIO setup
543 * @adev: device on the interface
545 * Perform PIO mode setup.
548 static void hpt370_set_piomode(struct ata_port *ap, struct ata_device *adev)
550 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
556 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
557 addr2 = 0x51 + 4 * ap->port_no;
559 /* Fast interrupt prediction disable, hold off interrupt disable */
560 pci_read_config_byte(pdev, addr2, &fast);
563 pci_write_config_byte(pdev, addr2, fast);
565 pci_read_config_dword(pdev, addr1, ®);
566 mode = hpt37x_find_mode(ap, adev->pio_mode);
567 mode &= ~0x8000000; /* No FIFO in PIO */
568 mode &= ~0x30070000; /* Leave config bits alone */
569 reg &= 0x30070000; /* Strip timing bits */
570 pci_write_config_dword(pdev, addr1, reg | mode);
574 * hpt370_set_dmamode - DMA timing setup
576 * @adev: Device being configured
578 * Set up the channel for MWDMA or UDMA modes. Much the same as with
579 * PIO, load the mode number and then set MWDMA or UDMA flag.
582 static void hpt370_set_dmamode(struct ata_port *ap, struct ata_device *adev)
584 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
590 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
591 addr2 = 0x51 + 4 * ap->port_no;
593 /* Fast interrupt prediction disable, hold off interrupt disable */
594 pci_read_config_byte(pdev, addr2, &fast);
597 pci_write_config_byte(pdev, addr2, fast);
599 pci_read_config_dword(pdev, addr1, ®);
600 mode = hpt37x_find_mode(ap, adev->dma_mode);
601 mode |= 0x8000000; /* FIFO in MWDMA or UDMA */
602 mode &= ~0xC0000000; /* Leave config bits alone */
603 reg &= 0xC0000000; /* Strip timing bits */
604 pci_write_config_dword(pdev, addr1, reg | mode);
608 * hpt370_bmdma_start - DMA engine begin
611 * The 370 and 370A want us to reset the DMA engine each time we
612 * use it. The 372 and later are fine.
615 static void hpt370_bmdma_start(struct ata_queued_cmd *qc)
617 struct ata_port *ap = qc->ap;
618 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
619 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
625 * hpt370_bmdma_end - DMA engine stop
628 * Work around the HPT370 DMA engine.
631 static void hpt370_bmdma_stop(struct ata_queued_cmd *qc)
633 struct ata_port *ap = qc->ap;
634 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
635 u8 dma_stat = inb(ap->ioaddr.bmdma_addr + 2);
637 unsigned long bmdma = ap->ioaddr.bmdma_addr;
639 if (dma_stat & 0x01) {
641 dma_stat = inb(bmdma + 2);
643 if (dma_stat & 0x01) {
644 /* Clear the engine */
645 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
648 dma_cmd = inb(bmdma );
649 outb(dma_cmd & 0xFE, bmdma);
651 dma_stat = inb(bmdma + 2);
652 outb(dma_stat | 0x06 , bmdma + 2);
653 /* Clear the engine */
654 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
661 * hpt372_set_piomode - PIO setup
663 * @adev: device on the interface
665 * Perform PIO mode setup.
668 static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev)
670 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
676 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
677 addr2 = 0x51 + 4 * ap->port_no;
679 /* Fast interrupt prediction disable, hold off interrupt disable */
680 pci_read_config_byte(pdev, addr2, &fast);
682 pci_write_config_byte(pdev, addr2, fast);
684 pci_read_config_dword(pdev, addr1, ®);
685 mode = hpt37x_find_mode(ap, adev->pio_mode);
687 printk("Find mode for %d reports %X\n", adev->pio_mode, mode);
688 mode &= ~0x80000000; /* No FIFO in PIO */
689 mode &= ~0x30070000; /* Leave config bits alone */
690 reg &= 0x30070000; /* Strip timing bits */
691 pci_write_config_dword(pdev, addr1, reg | mode);
695 * hpt372_set_dmamode - DMA timing setup
697 * @adev: Device being configured
699 * Set up the channel for MWDMA or UDMA modes. Much the same as with
700 * PIO, load the mode number and then set MWDMA or UDMA flag.
703 static void hpt372_set_dmamode(struct ata_port *ap, struct ata_device *adev)
705 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
711 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
712 addr2 = 0x51 + 4 * ap->port_no;
714 /* Fast interrupt prediction disable, hold off interrupt disable */
715 pci_read_config_byte(pdev, addr2, &fast);
717 pci_write_config_byte(pdev, addr2, fast);
719 pci_read_config_dword(pdev, addr1, ®);
720 mode = hpt37x_find_mode(ap, adev->dma_mode);
721 printk("Find mode for DMA %d reports %X\n", adev->dma_mode, mode);
722 mode &= ~0xC0000000; /* Leave config bits alone */
723 mode |= 0x80000000; /* FIFO in MWDMA or UDMA */
724 reg &= 0xC0000000; /* Strip timing bits */
725 pci_write_config_dword(pdev, addr1, reg | mode);
729 * hpt37x_bmdma_end - DMA engine stop
732 * Clean up after the HPT372 and later DMA engine
735 static void hpt37x_bmdma_stop(struct ata_queued_cmd *qc)
737 struct ata_port *ap = qc->ap;
738 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
739 int mscreg = 0x50 + 2 * ap->port_no;
740 u8 bwsr_stat, msc_stat;
742 pci_read_config_byte(pdev, 0x6A, &bwsr_stat);
743 pci_read_config_byte(pdev, mscreg, &msc_stat);
744 if (bwsr_stat & (1 << ap->port_no))
745 pci_write_config_byte(pdev, mscreg, msc_stat | 0x30);
750 static struct scsi_host_template hpt37x_sht = {
751 .module = THIS_MODULE,
753 .ioctl = ata_scsi_ioctl,
754 .queuecommand = ata_scsi_queuecmd,
755 .can_queue = ATA_DEF_QUEUE,
756 .this_id = ATA_SHT_THIS_ID,
757 .sg_tablesize = LIBATA_MAX_PRD,
758 .max_sectors = ATA_MAX_SECTORS,
759 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
760 .emulated = ATA_SHT_EMULATED,
761 .use_clustering = ATA_SHT_USE_CLUSTERING,
762 .proc_name = DRV_NAME,
763 .dma_boundary = ATA_DMA_BOUNDARY,
764 .slave_configure = ata_scsi_slave_config,
765 .bios_param = ata_std_bios_param,
769 * Configuration for HPT370
772 static struct ata_port_operations hpt370_port_ops = {
773 .port_disable = ata_port_disable,
774 .set_piomode = hpt370_set_piomode,
775 .set_dmamode = hpt370_set_dmamode,
776 .mode_filter = hpt370_filter,
778 .tf_load = ata_tf_load,
779 .tf_read = ata_tf_read,
780 .check_status = ata_check_status,
781 .exec_command = ata_exec_command,
782 .dev_select = ata_std_dev_select,
784 .freeze = ata_bmdma_freeze,
785 .thaw = ata_bmdma_thaw,
786 .error_handler = hpt37x_error_handler,
787 .post_internal_cmd = ata_bmdma_post_internal_cmd,
789 .bmdma_setup = ata_bmdma_setup,
790 .bmdma_start = hpt370_bmdma_start,
791 .bmdma_stop = hpt370_bmdma_stop,
792 .bmdma_status = ata_bmdma_status,
794 .qc_prep = ata_qc_prep,
795 .qc_issue = ata_qc_issue_prot,
797 .data_xfer = ata_pio_data_xfer,
799 .irq_handler = ata_interrupt,
800 .irq_clear = ata_bmdma_irq_clear,
802 .port_start = ata_port_start,
803 .port_stop = ata_port_stop,
804 .host_stop = ata_host_stop
808 * Configuration for HPT370A. Close to 370 but less filters
811 static struct ata_port_operations hpt370a_port_ops = {
812 .port_disable = ata_port_disable,
813 .set_piomode = hpt370_set_piomode,
814 .set_dmamode = hpt370_set_dmamode,
815 .mode_filter = hpt370a_filter,
817 .tf_load = ata_tf_load,
818 .tf_read = ata_tf_read,
819 .check_status = ata_check_status,
820 .exec_command = ata_exec_command,
821 .dev_select = ata_std_dev_select,
823 .freeze = ata_bmdma_freeze,
824 .thaw = ata_bmdma_thaw,
825 .error_handler = hpt37x_error_handler,
826 .post_internal_cmd = ata_bmdma_post_internal_cmd,
828 .bmdma_setup = ata_bmdma_setup,
829 .bmdma_start = hpt370_bmdma_start,
830 .bmdma_stop = hpt370_bmdma_stop,
831 .bmdma_status = ata_bmdma_status,
833 .qc_prep = ata_qc_prep,
834 .qc_issue = ata_qc_issue_prot,
836 .data_xfer = ata_pio_data_xfer,
838 .irq_handler = ata_interrupt,
839 .irq_clear = ata_bmdma_irq_clear,
841 .port_start = ata_port_start,
842 .port_stop = ata_port_stop,
843 .host_stop = ata_host_stop
847 * Configuration for HPT372, HPT371, HPT302. Slightly different PIO
848 * and DMA mode setting functionality.
851 static struct ata_port_operations hpt372_port_ops = {
852 .port_disable = ata_port_disable,
853 .set_piomode = hpt372_set_piomode,
854 .set_dmamode = hpt372_set_dmamode,
855 .mode_filter = ata_pci_default_filter,
857 .tf_load = ata_tf_load,
858 .tf_read = ata_tf_read,
859 .check_status = ata_check_status,
860 .exec_command = ata_exec_command,
861 .dev_select = ata_std_dev_select,
863 .freeze = ata_bmdma_freeze,
864 .thaw = ata_bmdma_thaw,
865 .error_handler = hpt37x_error_handler,
866 .post_internal_cmd = ata_bmdma_post_internal_cmd,
868 .bmdma_setup = ata_bmdma_setup,
869 .bmdma_start = ata_bmdma_start,
870 .bmdma_stop = hpt37x_bmdma_stop,
871 .bmdma_status = ata_bmdma_status,
873 .qc_prep = ata_qc_prep,
874 .qc_issue = ata_qc_issue_prot,
876 .data_xfer = ata_pio_data_xfer,
878 .irq_handler = ata_interrupt,
879 .irq_clear = ata_bmdma_irq_clear,
881 .port_start = ata_port_start,
882 .port_stop = ata_port_stop,
883 .host_stop = ata_host_stop
887 * Configuration for HPT374. Mode setting works like 372 and friends
888 * but we have a different cable detection procedure.
891 static struct ata_port_operations hpt374_port_ops = {
892 .port_disable = ata_port_disable,
893 .set_piomode = hpt372_set_piomode,
894 .set_dmamode = hpt372_set_dmamode,
895 .mode_filter = ata_pci_default_filter,
897 .tf_load = ata_tf_load,
898 .tf_read = ata_tf_read,
899 .check_status = ata_check_status,
900 .exec_command = ata_exec_command,
901 .dev_select = ata_std_dev_select,
903 .freeze = ata_bmdma_freeze,
904 .thaw = ata_bmdma_thaw,
905 .error_handler = hpt374_error_handler,
906 .post_internal_cmd = ata_bmdma_post_internal_cmd,
908 .bmdma_setup = ata_bmdma_setup,
909 .bmdma_start = ata_bmdma_start,
910 .bmdma_stop = hpt37x_bmdma_stop,
911 .bmdma_status = ata_bmdma_status,
913 .qc_prep = ata_qc_prep,
914 .qc_issue = ata_qc_issue_prot,
916 .data_xfer = ata_pio_data_xfer,
918 .irq_handler = ata_interrupt,
919 .irq_clear = ata_bmdma_irq_clear,
921 .port_start = ata_port_start,
922 .port_stop = ata_port_stop,
923 .host_stop = ata_host_stop
927 * htp37x_clock_slot - Turn timing to PC clock entry
928 * @freq: Reported frequency timing
931 * Turn the timing data intoa clock slot (0 for 33, 1 for 40, 2 for 50
935 static int hpt37x_clock_slot(unsigned int freq, unsigned int base)
937 unsigned int f = (base * freq) / 192; /* Mhz */
939 return 0; /* 33Mhz slot */
941 return 1; /* 40Mhz slot */
943 return 2; /* 50Mhz slot */
944 return 3; /* 60Mhz slot */
948 * hpt37x_calibrate_dpll - Calibrate the DPLL loop
951 * Perform a calibration cycle on the HPT37x DPLL. Returns 1 if this
955 static int hpt37x_calibrate_dpll(struct pci_dev *dev)
961 for(tries = 0; tries < 0x5000; tries++) {
963 pci_read_config_byte(dev, 0x5b, ®5b);
965 /* See if it stays set */
966 for(tries = 0; tries < 0x1000; tries ++) {
967 pci_read_config_byte(dev, 0x5b, ®5b);
969 if ((reg5b & 0x80) == 0)
972 /* Turn off tuning, we have the DPLL set */
973 pci_read_config_dword(dev, 0x5c, ®5c);
974 pci_write_config_dword(dev, 0x5c, reg5c & ~ 0x100);
978 /* Never went stable */
982 * hpt37x_init_one - Initialise an HPT37X/302
984 * @id: Entry in match table
986 * Initialise an HPT37x device. There are some interesting complications
987 * here. Firstly the chip may report 366 and be one of several variants.
988 * Secondly all the timings depend on the clock for the chip which we must
991 * This is the known chip mappings. It may be missing a couple of later
994 * Chip version PCI Rev Notes
995 * HPT366 4 (HPT366) 0 Other driver
996 * HPT366 4 (HPT366) 1 Other driver
997 * HPT368 4 (HPT366) 2 Other driver
998 * HPT370 4 (HPT366) 3 UDMA100
999 * HPT370A 4 (HPT366) 4 UDMA100
1000 * HPT372 4 (HPT366) 5 UDMA133 (1)
1001 * HPT372N 4 (HPT366) 6 Other driver
1002 * HPT372A 5 (HPT372) 1 UDMA133 (1)
1003 * HPT372N 5 (HPT372) 2 Other driver
1004 * HPT302 6 (HPT302) 1 UDMA133
1005 * HPT302N 6 (HPT302) 2 Other driver
1006 * HPT371 7 (HPT371) * UDMA133
1007 * HPT374 8 (HPT374) * UDMA133 4 channel
1008 * HPT372N 9 (HPT372N) * Other driver
1010 * (1) UDMA133 support depends on the bus clock
1013 static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
1015 /* HPT370 - UDMA100 */
1016 static struct ata_port_info info_hpt370 = {
1018 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1022 .port_ops = &hpt370_port_ops
1024 /* HPT370A - UDMA100 */
1025 static struct ata_port_info info_hpt370a = {
1027 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1031 .port_ops = &hpt370a_port_ops
1033 /* HPT371, 372 and friends - UDMA133 */
1034 static struct ata_port_info info_hpt372 = {
1036 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1040 .port_ops = &hpt372_port_ops
1042 /* HPT371, 372 and friends - UDMA100 at 50MHz clock */
1043 static struct ata_port_info info_hpt372_50 = {
1045 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1049 .port_ops = &hpt372_port_ops
1051 /* HPT374 - UDMA133 */
1052 static struct ata_port_info info_hpt374 = {
1054 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1058 .port_ops = &hpt374_port_ops
1061 static const int MHz[4] = { 33, 40, 50, 66 };
1063 struct ata_port_info *port_info[2];
1064 struct ata_port_info *port;
1070 const struct hpt_chip *chip_table;
1073 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
1076 if (dev->device == PCI_DEVICE_ID_TTI_HPT366) {
1077 /* May be a later chip in disguise. Check */
1078 /* Older chips are in the HPT366 driver. Ignore them */
1081 /* N series chips have their own driver. Ignore */
1087 port = &info_hpt370;
1088 chip_table = &hpt370;
1091 port = &info_hpt370a;
1092 chip_table = &hpt370a;
1095 port = &info_hpt372;
1096 chip_table = &hpt372;
1099 printk(KERN_ERR "pata_hpt37x: Unknown HPT366 subtype please report (%d).\n", class_rev);
1103 switch(dev->device) {
1104 case PCI_DEVICE_ID_TTI_HPT372:
1105 /* 372N if rev >= 2*/
1108 port = &info_hpt372;
1109 chip_table = &hpt372a;
1111 case PCI_DEVICE_ID_TTI_HPT302:
1112 /* 302N if rev > 1 */
1115 port = &info_hpt372;
1117 chip_table = &hpt302;
1119 case PCI_DEVICE_ID_TTI_HPT371:
1120 port = &info_hpt372;
1121 chip_table = &hpt371;
1123 case PCI_DEVICE_ID_TTI_HPT374:
1124 chip_table = &hpt374;
1125 port = &info_hpt374;
1128 printk(KERN_ERR "pata_hpt37x: PCI table is bogus please report (%d).\n", dev->device);
1132 /* Ok so this is a chip we support */
1134 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
1135 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
1136 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
1137 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
1139 pci_read_config_byte(dev, 0x5A, &irqmask);
1141 pci_write_config_byte(dev, 0x5a, irqmask);
1144 * default to pci clock. make sure MA15/16 are set to output
1145 * to prevent drives having problems with 40-pin cables. Needed
1146 * for some drives such as IBM-DTLA which will not enter ready
1147 * state on reset when PDIAG is a input.
1150 pci_write_config_byte(dev, 0x5b, 0x23);
1152 pci_read_config_dword(dev, 0x70, &freq);
1153 if ((freq >> 12) != 0xABCDE) {
1158 printk(KERN_WARNING "pata_hpt37x: BIOS has not set timing clocks.\n");
1160 /* This is the process the HPT371 BIOS is reported to use */
1161 for(i = 0; i < 128; i++) {
1162 pci_read_config_byte(dev, 0x78, &sr);
1171 * Turn the frequency check into a band and then find a timing
1172 * table to match it.
1175 clock_slot = hpt37x_clock_slot(freq, chip_table->base);
1176 if (chip_table->clocks[clock_slot] == NULL) {
1178 * We need to try PLL mode instead
1180 unsigned int f_low = (MHz[clock_slot] * chip_table->base) / 192;
1181 unsigned int f_high = f_low + 2;
1184 for(adjust = 0; adjust < 8; adjust++) {
1185 if (hpt37x_calibrate_dpll(dev))
1187 /* See if it'll settle at a fractionally different clock */
1188 if ((adjust & 3) == 3) {
1192 pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low);
1195 printk(KERN_WARNING "hpt37x: DPLL did not stabilize.\n");
1198 /* Check if this works for all cases */
1199 port->private_data = (void *)hpt370_timings_66;
1201 printk(KERN_INFO "hpt37x: Bus clock %dMHz, using DPLL.\n", MHz[clock_slot]);
1203 port->private_data = (void *)chip_table->clocks[clock_slot];
1205 * Perform a final fixup. The 371 and 372 clock determines
1206 * if UDMA133 is available.
1209 if (clock_slot == 2 && chip_table == &hpt372) { /* 50Mhz */
1210 printk(KERN_WARNING "pata_hpt37x: No UDMA133 support available with 50MHz bus clock.\n");
1211 if (port == &info_hpt372)
1212 port = &info_hpt372_50;
1215 printk(KERN_INFO "hpt37x: %s: Bus clock %dMHz.\n", chip_table->name, MHz[clock_slot]);
1217 port_info[0] = port_info[1] = port;
1218 /* Now kick off ATA set up */
1219 return ata_pci_init_one(dev, port_info, 2);
1222 static struct pci_device_id hpt37x[] = {
1223 { PCI_DEVICE(PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT366), },
1224 { PCI_DEVICE(PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT371), },
1225 { PCI_DEVICE(PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT372), },
1226 { PCI_DEVICE(PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT374), },
1227 { PCI_DEVICE(PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT302), },
1231 static struct pci_driver hpt37x_pci_driver = {
1234 .probe = hpt37x_init_one,
1235 .remove = ata_pci_remove_one
1238 static int __init hpt37x_init(void)
1240 return pci_register_driver(&hpt37x_pci_driver);
1244 static void __exit hpt37x_exit(void)
1246 pci_unregister_driver(&hpt37x_pci_driver);
1250 MODULE_AUTHOR("Alan Cox");
1251 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT37x/30x");
1252 MODULE_LICENSE("GPL");
1253 MODULE_DEVICE_TABLE(pci, hpt37x);
1254 MODULE_VERSION(DRV_VERSION);
1256 module_init(hpt37x_init);
1257 module_exit(hpt37x_exit);