1 // SPDX-License-Identifier: GPL-2.0-only
9  * Copyright (C) 1999-2003		Andre Hedrick <andre@linux-ide.org>
12  * Portions Copyright (C) 2005-2010	MontaVista Software, Inc.
59  * 30     PIO_MST enable. If set, the chip is in bus master mode during
203  *	hpt37x_find_mode	-	reset the hpt37x bus
205  *	@speed: transfer mode
213 	struct hpt_clock *clocks = ap->host->private_data;  in hpt37x_find_mode()
215 	while (clocks->xfer_speed) {  in hpt37x_find_mode()
216 		if (clocks->xfer_speed == speed)  in hpt37x_find_mode()
217 			return clocks->timing;  in hpt37x_find_mode()
230 	ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));  in hpt_dma_blacklisted()
232 	i = match_string(list, -1, model_num);  in hpt_dma_blacklisted()
257 	"IBM-DTLA-307075",
258 	"IBM-DTLA-307060",
259 	"IBM-DTLA-307045",
260 	"IBM-DTLA-307030",
261 	"IBM-DTLA-307020",
262 	"IBM-DTLA-307015",
263 	"IBM-DTLA-305040",
264 	"IBM-DTLA-305030",
265 	"IBM-DTLA-305020",
266 	"IC35L010AVER07-0",
267 	"IC35L020AVER07-0",
268 	"IC35L030AVER07-0",
269 	"IC35L040AVER07-0",
270 	"IC35L060AVER07-0",
276  *	hpt370_filter	-	mode selection filter
278  *	@mask: mode mask
285 	if (adev->class == ATA_DEV_ATA) {  in hpt370_filter()
295  *	hpt370a_filter	-	mode selection filter
297  *	@mask: mode mask
304 	if (adev->class == ATA_DEV_ATA) {  in hpt370a_filter()
312  *	hpt372_filter	-	mode selection filter
314  *	@mask: mode mask
321 	if (ata_id_is_sata(adev->id))  in hpt372_filter()
328  *	hpt37x_cable_detect	-	Detect the cable type
336 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in hpt37x_cable_detect()
349 	if (ata66 & (2 >> ap->port_no))  in hpt37x_cable_detect()
356  *	hpt374_fn1_cable_detect	-	Detect the cable type
364 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in hpt374_fn1_cable_detect()
365 	unsigned int mcrbase = 0x50 + 4 * ap->port_no;  in hpt374_fn1_cable_detect()
377 	if (ata66 & (2 >> ap->port_no))  in hpt374_fn1_cable_detect()
384  *	hpt37x_pre_reset	-	reset the hpt37x bus
393 	struct ata_port *ap = link->ap;  in hpt37x_pre_reset()
394 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in hpt37x_pre_reset()
400 	if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))  in hpt37x_pre_reset()
401 		return -ENOENT;  in hpt37x_pre_reset()
404 	pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);  in hpt37x_pre_reset()
411 			    u8 mode)  in hpt370_set_mode()  argument
413 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in hpt370_set_mode()
416 	u8 fast;  in hpt370_set_mode()  local
418 	addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);  in hpt370_set_mode()
419 	addr2 = 0x51 + 4 * ap->port_no;  in hpt370_set_mode()
421 	/* Fast interrupt prediction disable, hold off interrupt disable */  in hpt370_set_mode()
422 	pci_read_config_byte(pdev, addr2, &fast);  in hpt370_set_mode()
423 	fast &= ~0x02;  in hpt370_set_mode()
424 	fast |= 0x01;  in hpt370_set_mode()
425 	pci_write_config_byte(pdev, addr2, fast);  in hpt370_set_mode()
427 	/* Determine timing mask and find matching mode entry */  in hpt370_set_mode()
428 	if (mode < XFER_MW_DMA_0)  in hpt370_set_mode()
430 	else if (mode < XFER_UDMA_0)  in hpt370_set_mode()
435 	timing = hpt37x_find_mode(ap, mode);  in hpt370_set_mode()
442  *	hpt370_set_piomode		-	PIO setup
446  *	Perform PIO mode setup.
451 	hpt370_set_mode(ap, adev, adev->pio_mode);  in hpt370_set_piomode()
455  *	hpt370_set_dmamode		-	DMA timing setup
464 	hpt370_set_mode(ap, adev, adev->dma_mode);  in hpt370_set_dmamode()
468  *	hpt370_bmdma_stop		-	DMA engine stop
476 	struct ata_port *ap = qc->ap;  in hpt370_bmdma_stop()
477 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in hpt370_bmdma_stop()
478 	void __iomem *bmdma = ap->ioaddr.bmdma_addr;  in hpt370_bmdma_stop()
488 		pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);  in hpt370_bmdma_stop()
498 		pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);  in hpt370_bmdma_stop()
505 			    u8 mode)  in hpt372_set_mode()  argument
507 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in hpt372_set_mode()
510 	u8 fast;  in hpt372_set_mode()  local
512 	addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);  in hpt372_set_mode()
513 	addr2 = 0x51 + 4 * ap->port_no;  in hpt372_set_mode()
515 	/* Fast interrupt prediction disable, hold off interrupt disable */  in hpt372_set_mode()
516 	pci_read_config_byte(pdev, addr2, &fast);  in hpt372_set_mode()
517 	fast &= ~0x07;  in hpt372_set_mode()
518 	pci_write_config_byte(pdev, addr2, fast);  in hpt372_set_mode()
520 	/* Determine timing mask and find matching mode entry */  in hpt372_set_mode()
521 	if (mode < XFER_MW_DMA_0)  in hpt372_set_mode()
523 	else if (mode < XFER_UDMA_0)  in hpt372_set_mode()
528 	timing = hpt37x_find_mode(ap, mode);  in hpt372_set_mode()
536  *	hpt372_set_piomode		-	PIO setup
540  *	Perform PIO mode setup.
545 	hpt372_set_mode(ap, adev, adev->pio_mode);  in hpt372_set_piomode()
549  *	hpt372_set_dmamode		-	DMA timing setup
558 	hpt372_set_mode(ap, adev, adev->dma_mode);  in hpt372_set_dmamode()
562  *	hpt37x_bmdma_stop		-	DMA engine stop
570 	struct ata_port *ap = qc->ap;  in hpt37x_bmdma_stop()
571 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in hpt37x_bmdma_stop()
572 	int mscreg = 0x50 + 4 * ap->port_no;  in hpt37x_bmdma_stop()
577 	if (bwsr_stat & (1 << ap->port_no))  in hpt37x_bmdma_stop()
614  *	mode setting functionality.
629  *	Configuration for HPT372. Mode setting works like 371 and 302
630  *	but we have a mode filter.
639  *	Configuration for HPT374. Mode setting and filtering works like 372
649  *	hpt37x_clock_slot	-	Turn timing to PC clock entry
670  *	hpt37x_calibrate_dpll		-	Calibrate the DPLL loop
709 	if (PCI_FUNC(pdev->devfn) & 1) {  in hpt374_read_freq()
712 		pdev_0 = pci_get_slot(pdev->bus, pdev->devfn - 1);  in hpt374_read_freq()
725  *	hpt37x_init_one		-	Initialise an HPT37X/302
758 	/* HPT370 - UDMA100 */  in hpt37x_init_one()
766 	/* HPT370A - UDMA100 */  in hpt37x_init_one()
774 	/* HPT370 - UDMA66 */  in hpt37x_init_one()
782 	/* HPT370A - UDMA66 */  in hpt37x_init_one()
790 	/* HPT372 - UDMA133 */  in hpt37x_init_one()
798 	/* HPT371, 302 - UDMA133 */  in hpt37x_init_one()
806 	/* HPT374 - UDMA100, function 1 uses different cable_detect method */  in hpt37x_init_one()
825 	u8 rev = dev->revision;  in hpt37x_init_one()
841 	switch (dev->device) {  in hpt37x_init_one()
846 			return -ENODEV;  in hpt37x_init_one()
849 			return -ENODEV;  in hpt37x_init_one()
869 			return -ENODEV;  in hpt37x_init_one()
875 			return -ENODEV;  in hpt37x_init_one()
882 			return -ENODEV;  in hpt37x_init_one()
889 			return -ENODEV;  in hpt37x_init_one()
902 		if (!(PCI_FUNC(dev->devfn) & 1))  in hpt37x_init_one()
908 		pr_err("PCI table is bogus, please report (%d)\n", dev->device);  in hpt37x_init_one()
909 		return -ENODEV;  in hpt37x_init_one()
924 	 * to prevent drives having problems with 40-pin cables. Needed  in hpt37x_init_one()
925 	 * for some drives such as IBM-DTLA which will not enter ready  in hpt37x_init_one()
947 			return -ENODEV;  in hpt37x_init_one()
973 	clock_slot = hpt37x_clock_slot(freq, chip_table->base);  in hpt37x_init_one()
974 	if (chip_table->clocks[clock_slot] == NULL || prefer_dpll) {  in hpt37x_init_one()
976 		 *	We need to try PLL mode instead  in hpt37x_init_one()
985 		dpll = (ppi[0]->udma_mask & 0xC0) ? 3 : 2;  in hpt37x_init_one()
1005 				f_low -= adjust >> 1;  in hpt37x_init_one()
1013 			return -ENODEV;  in hpt37x_init_one()
1023 		private_data = (void *)chip_table->clocks[clock_slot];  in hpt37x_init_one()
1036 			chip_table->name, MHz[clock_slot]);  in hpt37x_init_one()
1063 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT37x/30x");