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 "0.6.0"
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[ATA_ID_PROD_LEN + 1];
355 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
357 while (list[i] != NULL) {
358 if (!strcmp(list[i], model_num)) {
359 printk(KERN_WARNING DRV_NAME ": %s is not supported for %s.\n",
368 static const char *bad_ata33[] = {
369 "Maxtor 92720U8", "Maxtor 92040U6", "Maxtor 91360U4", "Maxtor 91020U3", "Maxtor 90845U3", "Maxtor 90650U2",
370 "Maxtor 91360D8", "Maxtor 91190D7", "Maxtor 91020D6", "Maxtor 90845D5", "Maxtor 90680D4", "Maxtor 90510D3", "Maxtor 90340D2",
371 "Maxtor 91152D8", "Maxtor 91008D7", "Maxtor 90845D6", "Maxtor 90840D6", "Maxtor 90720D5", "Maxtor 90648D5", "Maxtor 90576D4",
373 "Maxtor 90432D3", "Maxtor 90288D2", "Maxtor 90256D2",
374 "Maxtor 91000D8", "Maxtor 90910D8", "Maxtor 90875D7", "Maxtor 90840D7", "Maxtor 90750D6", "Maxtor 90625D5", "Maxtor 90500D4",
375 "Maxtor 91728D8", "Maxtor 91512D7", "Maxtor 91303D6", "Maxtor 91080D5", "Maxtor 90845D4", "Maxtor 90680D4", "Maxtor 90648D3", "Maxtor 90432D2",
379 static const char *bad_ata100_5[] = {
399 * hpt370_filter - mode selection filter
403 * Block UDMA on devices that cause trouble with this controller.
406 static unsigned long hpt370_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask)
408 if (adev->class == ATA_DEV_ATA) {
409 if (hpt_dma_blacklisted(adev, "UDMA", bad_ata33))
410 mask &= ~ATA_MASK_UDMA;
411 if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5))
412 mask &= ~(0x1F << ATA_SHIFT_UDMA);
414 return ata_pci_default_filter(ap, adev, mask);
418 * hpt370a_filter - mode selection filter
422 * Block UDMA on devices that cause trouble with this controller.
425 static unsigned long hpt370a_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask)
427 if (adev->class != ATA_DEV_ATA) {
428 if (hpt_dma_blacklisted(adev, "UDMA100", bad_ata100_5))
429 mask &= ~ (0x1F << ATA_SHIFT_UDMA);
431 return ata_pci_default_filter(ap, adev, mask);
435 * hpt37x_pre_reset - reset the hpt37x bus
436 * @ap: ATA port to reset
438 * Perform the initial reset handling for the 370/372 and 374 func 0
441 static int hpt37x_pre_reset(struct ata_port *ap)
444 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
445 static const struct pci_bits hpt37x_enable_bits[] = {
446 { 0x50, 1, 0x04, 0x04 },
447 { 0x54, 1, 0x04, 0x04 }
449 if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
452 pci_read_config_byte(pdev, 0x5B, &scr2);
453 pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01);
454 /* Cable register now active */
455 pci_read_config_byte(pdev, 0x5A, &ata66);
457 pci_write_config_byte(pdev, 0x5B, scr2);
459 if (ata66 & (1 << ap->port_no))
460 ap->cbl = ATA_CBL_PATA40;
462 ap->cbl = ATA_CBL_PATA80;
464 /* Reset the state machine */
465 pci_write_config_byte(pdev, 0x50, 0x37);
466 pci_write_config_byte(pdev, 0x54, 0x37);
469 return ata_std_prereset(ap);
473 * hpt37x_error_handler - reset the hpt374
474 * @ap: ATA port to reset
476 * Perform probe for HPT37x, except for HPT374 channel 2
479 static void hpt37x_error_handler(struct ata_port *ap)
481 ata_bmdma_drive_eh(ap, hpt37x_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
484 static int hpt374_pre_reset(struct ata_port *ap)
486 static const struct pci_bits hpt37x_enable_bits[] = {
487 { 0x50, 1, 0x04, 0x04 },
488 { 0x54, 1, 0x04, 0x04 }
492 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
494 if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
497 /* Do the extra channel work */
498 pci_read_config_word(pdev, 0x52, &mcr3);
499 pci_read_config_word(pdev, 0x56, &mcr6);
500 /* Set bit 15 of 0x52 to enable TCBLID as input
501 Set bit 15 of 0x56 to enable FCBLID as input
503 pci_write_config_word(pdev, 0x52, mcr3 | 0x8000);
504 pci_write_config_word(pdev, 0x56, mcr6 | 0x8000);
505 pci_read_config_byte(pdev, 0x5A, &ata66);
506 /* Reset TCBLID/FCBLID to output */
507 pci_write_config_word(pdev, 0x52, mcr3);
508 pci_write_config_word(pdev, 0x56, mcr6);
510 if (ata66 & (1 << ap->port_no))
511 ap->cbl = ATA_CBL_PATA40;
513 ap->cbl = ATA_CBL_PATA80;
515 /* Reset the state machine */
516 pci_write_config_byte(pdev, 0x50, 0x37);
517 pci_write_config_byte(pdev, 0x54, 0x37);
520 return ata_std_prereset(ap);
524 * hpt374_error_handler - reset the hpt374
527 * The 374 cable detect is a little different due to the extra
528 * channels. The function 0 channels work like usual but function 1
532 static void hpt374_error_handler(struct ata_port *ap)
534 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
536 if (!(PCI_FUNC(pdev->devfn) & 1))
537 hpt37x_error_handler(ap);
539 ata_bmdma_drive_eh(ap, hpt374_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
543 * hpt370_set_piomode - PIO setup
545 * @adev: device on the interface
547 * Perform PIO mode setup.
550 static void hpt370_set_piomode(struct ata_port *ap, struct ata_device *adev)
552 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
558 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
559 addr2 = 0x51 + 4 * ap->port_no;
561 /* Fast interrupt prediction disable, hold off interrupt disable */
562 pci_read_config_byte(pdev, addr2, &fast);
565 pci_write_config_byte(pdev, addr2, fast);
567 pci_read_config_dword(pdev, addr1, ®);
568 mode = hpt37x_find_mode(ap, adev->pio_mode);
569 mode &= ~0x8000000; /* No FIFO in PIO */
570 mode &= ~0x30070000; /* Leave config bits alone */
571 reg &= 0x30070000; /* Strip timing bits */
572 pci_write_config_dword(pdev, addr1, reg | mode);
576 * hpt370_set_dmamode - DMA timing setup
578 * @adev: Device being configured
580 * Set up the channel for MWDMA or UDMA modes. Much the same as with
581 * PIO, load the mode number and then set MWDMA or UDMA flag.
584 static void hpt370_set_dmamode(struct ata_port *ap, struct ata_device *adev)
586 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
592 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
593 addr2 = 0x51 + 4 * ap->port_no;
595 /* Fast interrupt prediction disable, hold off interrupt disable */
596 pci_read_config_byte(pdev, addr2, &fast);
599 pci_write_config_byte(pdev, addr2, fast);
601 pci_read_config_dword(pdev, addr1, ®);
602 mode = hpt37x_find_mode(ap, adev->dma_mode);
603 mode |= 0x8000000; /* FIFO in MWDMA or UDMA */
604 mode &= ~0xC0000000; /* Leave config bits alone */
605 reg &= 0xC0000000; /* Strip timing bits */
606 pci_write_config_dword(pdev, addr1, reg | mode);
610 * hpt370_bmdma_start - DMA engine begin
613 * The 370 and 370A want us to reset the DMA engine each time we
614 * use it. The 372 and later are fine.
617 static void hpt370_bmdma_start(struct ata_queued_cmd *qc)
619 struct ata_port *ap = qc->ap;
620 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
621 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
627 * hpt370_bmdma_end - DMA engine stop
630 * Work around the HPT370 DMA engine.
633 static void hpt370_bmdma_stop(struct ata_queued_cmd *qc)
635 struct ata_port *ap = qc->ap;
636 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
637 u8 dma_stat = ioread8(ap->ioaddr.bmdma_addr + 2);
639 void __iomem *bmdma = ap->ioaddr.bmdma_addr;
641 if (dma_stat & 0x01) {
643 dma_stat = ioread8(bmdma + 2);
645 if (dma_stat & 0x01) {
646 /* Clear the engine */
647 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
650 dma_cmd = ioread8(bmdma );
651 iowrite8(dma_cmd & 0xFE, bmdma);
653 dma_stat = ioread8(bmdma + 2);
654 iowrite8(dma_stat | 0x06 , bmdma + 2);
655 /* Clear the engine */
656 pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
663 * hpt372_set_piomode - PIO setup
665 * @adev: device on the interface
667 * Perform PIO mode setup.
670 static void hpt372_set_piomode(struct ata_port *ap, struct ata_device *adev)
672 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
678 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
679 addr2 = 0x51 + 4 * ap->port_no;
681 /* Fast interrupt prediction disable, hold off interrupt disable */
682 pci_read_config_byte(pdev, addr2, &fast);
684 pci_write_config_byte(pdev, addr2, fast);
686 pci_read_config_dword(pdev, addr1, ®);
687 mode = hpt37x_find_mode(ap, adev->pio_mode);
689 printk("Find mode for %d reports %X\n", adev->pio_mode, mode);
690 mode &= ~0x80000000; /* No FIFO in PIO */
691 mode &= ~0x30070000; /* Leave config bits alone */
692 reg &= 0x30070000; /* Strip timing bits */
693 pci_write_config_dword(pdev, addr1, reg | mode);
697 * hpt372_set_dmamode - DMA timing setup
699 * @adev: Device being configured
701 * Set up the channel for MWDMA or UDMA modes. Much the same as with
702 * PIO, load the mode number and then set MWDMA or UDMA flag.
705 static void hpt372_set_dmamode(struct ata_port *ap, struct ata_device *adev)
707 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
713 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
714 addr2 = 0x51 + 4 * ap->port_no;
716 /* Fast interrupt prediction disable, hold off interrupt disable */
717 pci_read_config_byte(pdev, addr2, &fast);
719 pci_write_config_byte(pdev, addr2, fast);
721 pci_read_config_dword(pdev, addr1, ®);
722 mode = hpt37x_find_mode(ap, adev->dma_mode);
723 printk("Find mode for DMA %d reports %X\n", adev->dma_mode, mode);
724 mode &= ~0xC0000000; /* Leave config bits alone */
725 mode |= 0x80000000; /* FIFO in MWDMA or UDMA */
726 reg &= 0xC0000000; /* Strip timing bits */
727 pci_write_config_dword(pdev, addr1, reg | mode);
731 * hpt37x_bmdma_end - DMA engine stop
734 * Clean up after the HPT372 and later DMA engine
737 static void hpt37x_bmdma_stop(struct ata_queued_cmd *qc)
739 struct ata_port *ap = qc->ap;
740 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
741 int mscreg = 0x50 + 4 * ap->port_no;
742 u8 bwsr_stat, msc_stat;
744 pci_read_config_byte(pdev, 0x6A, &bwsr_stat);
745 pci_read_config_byte(pdev, mscreg, &msc_stat);
746 if (bwsr_stat & (1 << ap->port_no))
747 pci_write_config_byte(pdev, mscreg, msc_stat | 0x30);
752 static struct scsi_host_template hpt37x_sht = {
753 .module = THIS_MODULE,
755 .ioctl = ata_scsi_ioctl,
756 .queuecommand = ata_scsi_queuecmd,
757 .can_queue = ATA_DEF_QUEUE,
758 .this_id = ATA_SHT_THIS_ID,
759 .sg_tablesize = LIBATA_MAX_PRD,
760 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
761 .emulated = ATA_SHT_EMULATED,
762 .use_clustering = ATA_SHT_USE_CLUSTERING,
763 .proc_name = DRV_NAME,
764 .dma_boundary = ATA_DMA_BOUNDARY,
765 .slave_configure = ata_scsi_slave_config,
766 .slave_destroy = ata_scsi_slave_destroy,
767 .bios_param = ata_std_bios_param,
771 * Configuration for HPT370
774 static struct ata_port_operations hpt370_port_ops = {
775 .port_disable = ata_port_disable,
776 .set_piomode = hpt370_set_piomode,
777 .set_dmamode = hpt370_set_dmamode,
778 .mode_filter = hpt370_filter,
780 .tf_load = ata_tf_load,
781 .tf_read = ata_tf_read,
782 .check_status = ata_check_status,
783 .exec_command = ata_exec_command,
784 .dev_select = ata_std_dev_select,
786 .freeze = ata_bmdma_freeze,
787 .thaw = ata_bmdma_thaw,
788 .error_handler = hpt37x_error_handler,
789 .post_internal_cmd = ata_bmdma_post_internal_cmd,
791 .bmdma_setup = ata_bmdma_setup,
792 .bmdma_start = hpt370_bmdma_start,
793 .bmdma_stop = hpt370_bmdma_stop,
794 .bmdma_status = ata_bmdma_status,
796 .qc_prep = ata_qc_prep,
797 .qc_issue = ata_qc_issue_prot,
799 .data_xfer = ata_data_xfer,
801 .irq_handler = ata_interrupt,
802 .irq_clear = ata_bmdma_irq_clear,
803 .irq_on = ata_irq_on,
804 .irq_ack = ata_irq_ack,
806 .port_start = ata_port_start,
810 * Configuration for HPT370A. Close to 370 but less filters
813 static struct ata_port_operations hpt370a_port_ops = {
814 .port_disable = ata_port_disable,
815 .set_piomode = hpt370_set_piomode,
816 .set_dmamode = hpt370_set_dmamode,
817 .mode_filter = hpt370a_filter,
819 .tf_load = ata_tf_load,
820 .tf_read = ata_tf_read,
821 .check_status = ata_check_status,
822 .exec_command = ata_exec_command,
823 .dev_select = ata_std_dev_select,
825 .freeze = ata_bmdma_freeze,
826 .thaw = ata_bmdma_thaw,
827 .error_handler = hpt37x_error_handler,
828 .post_internal_cmd = ata_bmdma_post_internal_cmd,
830 .bmdma_setup = ata_bmdma_setup,
831 .bmdma_start = hpt370_bmdma_start,
832 .bmdma_stop = hpt370_bmdma_stop,
833 .bmdma_status = ata_bmdma_status,
835 .qc_prep = ata_qc_prep,
836 .qc_issue = ata_qc_issue_prot,
838 .data_xfer = ata_data_xfer,
840 .irq_handler = ata_interrupt,
841 .irq_clear = ata_bmdma_irq_clear,
842 .irq_on = ata_irq_on,
843 .irq_ack = ata_irq_ack,
845 .port_start = ata_port_start,
849 * Configuration for HPT372, HPT371, HPT302. Slightly different PIO
850 * and DMA mode setting functionality.
853 static struct ata_port_operations hpt372_port_ops = {
854 .port_disable = ata_port_disable,
855 .set_piomode = hpt372_set_piomode,
856 .set_dmamode = hpt372_set_dmamode,
857 .mode_filter = ata_pci_default_filter,
859 .tf_load = ata_tf_load,
860 .tf_read = ata_tf_read,
861 .check_status = ata_check_status,
862 .exec_command = ata_exec_command,
863 .dev_select = ata_std_dev_select,
865 .freeze = ata_bmdma_freeze,
866 .thaw = ata_bmdma_thaw,
867 .error_handler = hpt37x_error_handler,
868 .post_internal_cmd = ata_bmdma_post_internal_cmd,
870 .bmdma_setup = ata_bmdma_setup,
871 .bmdma_start = ata_bmdma_start,
872 .bmdma_stop = hpt37x_bmdma_stop,
873 .bmdma_status = ata_bmdma_status,
875 .qc_prep = ata_qc_prep,
876 .qc_issue = ata_qc_issue_prot,
878 .data_xfer = ata_data_xfer,
880 .irq_handler = ata_interrupt,
881 .irq_clear = ata_bmdma_irq_clear,
882 .irq_on = ata_irq_on,
883 .irq_ack = ata_irq_ack,
885 .port_start = ata_port_start,
889 * Configuration for HPT374. Mode setting works like 372 and friends
890 * but we have a different cable detection procedure.
893 static struct ata_port_operations hpt374_port_ops = {
894 .port_disable = ata_port_disable,
895 .set_piomode = hpt372_set_piomode,
896 .set_dmamode = hpt372_set_dmamode,
897 .mode_filter = ata_pci_default_filter,
899 .tf_load = ata_tf_load,
900 .tf_read = ata_tf_read,
901 .check_status = ata_check_status,
902 .exec_command = ata_exec_command,
903 .dev_select = ata_std_dev_select,
905 .freeze = ata_bmdma_freeze,
906 .thaw = ata_bmdma_thaw,
907 .error_handler = hpt374_error_handler,
908 .post_internal_cmd = ata_bmdma_post_internal_cmd,
910 .bmdma_setup = ata_bmdma_setup,
911 .bmdma_start = ata_bmdma_start,
912 .bmdma_stop = hpt37x_bmdma_stop,
913 .bmdma_status = ata_bmdma_status,
915 .qc_prep = ata_qc_prep,
916 .qc_issue = ata_qc_issue_prot,
918 .data_xfer = ata_data_xfer,
920 .irq_handler = ata_interrupt,
921 .irq_clear = ata_bmdma_irq_clear,
922 .irq_on = ata_irq_on,
923 .irq_ack = ata_irq_ack,
925 .port_start = ata_port_start,
929 * htp37x_clock_slot - Turn timing to PC clock entry
930 * @freq: Reported frequency timing
933 * Turn the timing data intoa clock slot (0 for 33, 1 for 40, 2 for 50
937 static int hpt37x_clock_slot(unsigned int freq, unsigned int base)
939 unsigned int f = (base * freq) / 192; /* Mhz */
941 return 0; /* 33Mhz slot */
943 return 1; /* 40Mhz slot */
945 return 2; /* 50Mhz slot */
946 return 3; /* 60Mhz slot */
950 * hpt37x_calibrate_dpll - Calibrate the DPLL loop
953 * Perform a calibration cycle on the HPT37x DPLL. Returns 1 if this
957 static int hpt37x_calibrate_dpll(struct pci_dev *dev)
963 for(tries = 0; tries < 0x5000; tries++) {
965 pci_read_config_byte(dev, 0x5b, ®5b);
967 /* See if it stays set */
968 for(tries = 0; tries < 0x1000; tries ++) {
969 pci_read_config_byte(dev, 0x5b, ®5b);
971 if ((reg5b & 0x80) == 0)
974 /* Turn off tuning, we have the DPLL set */
975 pci_read_config_dword(dev, 0x5c, ®5c);
976 pci_write_config_dword(dev, 0x5c, reg5c & ~ 0x100);
980 /* Never went stable */
984 * hpt37x_init_one - Initialise an HPT37X/302
986 * @id: Entry in match table
988 * Initialise an HPT37x device. There are some interesting complications
989 * here. Firstly the chip may report 366 and be one of several variants.
990 * Secondly all the timings depend on the clock for the chip which we must
993 * This is the known chip mappings. It may be missing a couple of later
996 * Chip version PCI Rev Notes
997 * HPT366 4 (HPT366) 0 Other driver
998 * HPT366 4 (HPT366) 1 Other driver
999 * HPT368 4 (HPT366) 2 Other driver
1000 * HPT370 4 (HPT366) 3 UDMA100
1001 * HPT370A 4 (HPT366) 4 UDMA100
1002 * HPT372 4 (HPT366) 5 UDMA133 (1)
1003 * HPT372N 4 (HPT366) 6 Other driver
1004 * HPT372A 5 (HPT372) 1 UDMA133 (1)
1005 * HPT372N 5 (HPT372) 2 Other driver
1006 * HPT302 6 (HPT302) 1 UDMA133
1007 * HPT302N 6 (HPT302) 2 Other driver
1008 * HPT371 7 (HPT371) * UDMA133
1009 * HPT374 8 (HPT374) * UDMA133 4 channel
1010 * HPT372N 9 (HPT372N) * Other driver
1012 * (1) UDMA133 support depends on the bus clock
1015 static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
1017 /* HPT370 - UDMA100 */
1018 static struct ata_port_info info_hpt370 = {
1020 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1024 .port_ops = &hpt370_port_ops
1026 /* HPT370A - UDMA100 */
1027 static struct ata_port_info info_hpt370a = {
1029 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1033 .port_ops = &hpt370a_port_ops
1035 /* HPT371, 372 and friends - UDMA133 */
1036 static struct ata_port_info info_hpt372 = {
1038 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1042 .port_ops = &hpt372_port_ops
1044 /* HPT371, 372 and friends - UDMA100 at 50MHz clock */
1045 static struct ata_port_info info_hpt372_50 = {
1047 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1051 .port_ops = &hpt372_port_ops
1053 /* HPT374 - UDMA133 */
1054 static struct ata_port_info info_hpt374 = {
1056 .flags = ATA_FLAG_SLAVE_POSS|ATA_FLAG_SRST,
1060 .port_ops = &hpt374_port_ops
1063 static const int MHz[4] = { 33, 40, 50, 66 };
1065 struct ata_port_info *port_info[2];
1066 struct ata_port_info *port;
1072 const struct hpt_chip *chip_table;
1075 pci_read_config_dword(dev, PCI_CLASS_REVISION, &class_rev);
1078 if (dev->device == PCI_DEVICE_ID_TTI_HPT366) {
1079 /* May be a later chip in disguise. Check */
1080 /* Older chips are in the HPT366 driver. Ignore them */
1083 /* N series chips have their own driver. Ignore */
1089 port = &info_hpt370;
1090 chip_table = &hpt370;
1093 port = &info_hpt370a;
1094 chip_table = &hpt370a;
1097 port = &info_hpt372;
1098 chip_table = &hpt372;
1101 printk(KERN_ERR "pata_hpt37x: Unknown HPT366 subtype please report (%d).\n", class_rev);
1105 switch(dev->device) {
1106 case PCI_DEVICE_ID_TTI_HPT372:
1107 /* 372N if rev >= 2*/
1110 port = &info_hpt372;
1111 chip_table = &hpt372a;
1113 case PCI_DEVICE_ID_TTI_HPT302:
1114 /* 302N if rev > 1 */
1117 port = &info_hpt372;
1119 chip_table = &hpt302;
1121 case PCI_DEVICE_ID_TTI_HPT371:
1122 port = &info_hpt372;
1123 chip_table = &hpt371;
1125 case PCI_DEVICE_ID_TTI_HPT374:
1126 chip_table = &hpt374;
1127 port = &info_hpt374;
1130 printk(KERN_ERR "pata_hpt37x: PCI table is bogus please report (%d).\n", dev->device);
1134 /* Ok so this is a chip we support */
1136 pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, (L1_CACHE_BYTES / 4));
1137 pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x78);
1138 pci_write_config_byte(dev, PCI_MIN_GNT, 0x08);
1139 pci_write_config_byte(dev, PCI_MAX_LAT, 0x08);
1141 pci_read_config_byte(dev, 0x5A, &irqmask);
1143 pci_write_config_byte(dev, 0x5a, irqmask);
1146 * default to pci clock. make sure MA15/16 are set to output
1147 * to prevent drives having problems with 40-pin cables. Needed
1148 * for some drives such as IBM-DTLA which will not enter ready
1149 * state on reset when PDIAG is a input.
1152 pci_write_config_byte(dev, 0x5b, 0x23);
1154 pci_read_config_dword(dev, 0x70, &freq);
1155 if ((freq >> 12) != 0xABCDE) {
1160 printk(KERN_WARNING "pata_hpt37x: BIOS has not set timing clocks.\n");
1162 /* This is the process the HPT371 BIOS is reported to use */
1163 for(i = 0; i < 128; i++) {
1164 pci_read_config_byte(dev, 0x78, &sr);
1173 * Turn the frequency check into a band and then find a timing
1174 * table to match it.
1177 clock_slot = hpt37x_clock_slot(freq, chip_table->base);
1178 if (chip_table->clocks[clock_slot] == NULL) {
1180 * We need to try PLL mode instead
1182 unsigned int f_low = (MHz[clock_slot] * chip_table->base) / 192;
1183 unsigned int f_high = f_low + 2;
1186 for(adjust = 0; adjust < 8; adjust++) {
1187 if (hpt37x_calibrate_dpll(dev))
1189 /* See if it'll settle at a fractionally different clock */
1190 if ((adjust & 3) == 3) {
1194 pci_write_config_dword(dev, 0x5C, (f_high << 16) | f_low);
1197 printk(KERN_WARNING "hpt37x: DPLL did not stabilize.\n");
1200 /* Check if this works for all cases */
1201 port->private_data = (void *)hpt370_timings_66;
1203 printk(KERN_INFO "hpt37x: Bus clock %dMHz, using DPLL.\n", MHz[clock_slot]);
1205 port->private_data = (void *)chip_table->clocks[clock_slot];
1207 * Perform a final fixup. The 371 and 372 clock determines
1208 * if UDMA133 is available.
1211 if (clock_slot == 2 && chip_table == &hpt372) { /* 50Mhz */
1212 printk(KERN_WARNING "pata_hpt37x: No UDMA133 support available with 50MHz bus clock.\n");
1213 if (port == &info_hpt372)
1214 port = &info_hpt372_50;
1217 printk(KERN_INFO "hpt37x: %s: Bus clock %dMHz.\n", chip_table->name, MHz[clock_slot]);
1219 port_info[0] = port_info[1] = port;
1220 /* Now kick off ATA set up */
1221 return ata_pci_init_one(dev, port_info, 2);
1224 static const struct pci_device_id hpt37x[] = {
1225 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT366), },
1226 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT371), },
1227 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT372), },
1228 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT374), },
1229 { PCI_VDEVICE(TTI, PCI_DEVICE_ID_TTI_HPT302), },
1234 static struct pci_driver hpt37x_pci_driver = {
1237 .probe = hpt37x_init_one,
1238 .remove = ata_pci_remove_one
1241 static int __init hpt37x_init(void)
1243 return pci_register_driver(&hpt37x_pci_driver);
1246 static void __exit hpt37x_exit(void)
1248 pci_unregister_driver(&hpt37x_pci_driver);
1251 MODULE_AUTHOR("Alan Cox");
1252 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT37x/30x");
1253 MODULE_LICENSE("GPL");
1254 MODULE_DEVICE_TABLE(pci, hpt37x);
1255 MODULE_VERSION(DRV_VERSION);
1257 module_init(hpt37x_init);
1258 module_exit(hpt37x_exit);