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.
85  *	hpt3x2n_find_mode	-	reset the hpt3x2n bus
99 	while (clocks->xfer_speed) {  in hpt3x2n_find_mode()
100 		if (clocks->xfer_speed == speed)  in hpt3x2n_find_mode()
101 			return clocks->timing;  in hpt3x2n_find_mode()
109  *	hpt372n_filter	-	mode selection filter
111  *	@mask: mode mask
116 static unsigned int hpt372n_filter(struct ata_device *adev, unsigned int mask)  in hpt372n_filter()  argument
118 	if (ata_id_is_sata(adev->id))  in hpt372n_filter()
119 		mask &= ~((0xE << ATA_SHIFT_UDMA) | ATA_MASK_MWDMA);  in hpt372n_filter()
121 	return mask;  in hpt372n_filter()
125  *	hpt3x2n_cable_detect	-	Detect the cable type
134 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in hpt3x2n_cable_detect()
146 	if (ata66 & (2 >> ap->port_no))  in hpt3x2n_cable_detect()
153  *	hpt3x2n_pre_reset	-	reset the hpt3x2n bus
163 	struct ata_port *ap = link->ap;  in hpt3x2n_pre_reset()
164 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in hpt3x2n_pre_reset()
171 	if (!pci_test_config_bits(pdev, &hpt3x2n_enable_bits[ap->port_no]))  in hpt3x2n_pre_reset()
172 		return -ENOENT;  in hpt3x2n_pre_reset()
175 	pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);  in hpt3x2n_pre_reset()
178 	/* Fast interrupt prediction disable, hold off interrupt disable */  in hpt3x2n_pre_reset()
179 	pci_read_config_byte(pdev, 0x51 + 4 * ap->port_no, &mcr2);  in hpt3x2n_pre_reset()
181 	pci_write_config_byte(pdev, 0x51 + 4 * ap->port_no, mcr2);  in hpt3x2n_pre_reset()
189 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in hpt3x2n_set_mode()
190 	int addr = 0x40 + 4 * (adev->devno + 2 * ap->port_no);  in hpt3x2n_set_mode()
191 	u32 reg, timing, mask;  in hpt3x2n_set_mode()  local
193 	/* Determine timing mask and find matching mode entry */  in hpt3x2n_set_mode()
195 		mask = 0xcfc3ffff;  in hpt3x2n_set_mode()
197 		mask = 0x31c001ff;  in hpt3x2n_set_mode()
199 		mask = 0x303c0000;  in hpt3x2n_set_mode()
204 	reg = (reg & ~mask) | (timing & mask);  in hpt3x2n_set_mode()
209  *	hpt3x2n_set_piomode		-	PIO setup
218 	hpt3x2n_set_mode(ap, adev, adev->pio_mode);  in hpt3x2n_set_piomode()
222  *	hpt3x2n_set_dmamode		-	DMA timing setup
231 	hpt3x2n_set_mode(ap, adev, adev->dma_mode);  in hpt3x2n_set_dmamode()
235  *	hpt3x2n_bmdma_stop		-	DMA engine stop
243 	struct ata_port *ap = qc->ap;  in hpt3x2n_bmdma_stop()
244 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in hpt3x2n_bmdma_stop()
245 	int mscreg = 0x50 + 4 * ap->port_no;  in hpt3x2n_bmdma_stop()
250 	if (bwsr_stat & (1 << ap->port_no))  in hpt3x2n_bmdma_stop()
256  *	hpt3x2n_set_clock	-	clock control
264  *	-	writing
265  *	-	second channel UDMA7 (SATA ports) or higher
266  *	-	66MHz PCI
273 	void __iomem *bmdma = ap->ioaddr.bmdma_addr - ap->port_no * 8;  in hpt3x2n_set_clock()
297 	long flags = (long)ap->host->private_data;  in hpt3x2n_use_dpll()
309 	struct ata_port *ap = qc->ap;  in hpt3x2n_qc_defer()
310 	struct ata_port *alt = ap->host->ports[ap->port_no ^ 1];  in hpt3x2n_qc_defer()
311 	int rc, flags = (long)ap->host->private_data;  in hpt3x2n_qc_defer()
312 	int dpll = hpt3x2n_use_dpll(ap, qc->tf.flags & ATA_TFLAG_WRITE);  in hpt3x2n_qc_defer()
319 	if ((flags & USE_DPLL) != dpll && alt->qc_active)  in hpt3x2n_qc_defer()
326 	struct ata_port *ap = qc->ap;  in hpt3x2n_qc_issue()
327 	int flags = (long)ap->host->private_data;  in hpt3x2n_qc_issue()
328 	int dpll = hpt3x2n_use_dpll(ap, qc->tf.flags & ATA_TFLAG_WRITE);  in hpt3x2n_qc_issue()
333 		ap->host->private_data = (void *)(long)flags;  in hpt3x2n_qc_issue()
372  *	hpt3xn_calibrate_dpll		-	Calibrate the DPLL loop
421 		dev_warn(&pdev->dev, "BIOS clock data not set\n");  in hpt3x2n_pci_clock()
446  *	hpt3x2n_init_one		-	Initialise an HPT37X/302
451  *	here. Firstly the chip may report 366 and be one of several variants.
475 	/* HPT372N - UDMA133 */  in hpt3x2n_init_one()
483 	/* HPT302N and HPT371N - UDMA133 */  in hpt3x2n_init_one()
492 	u8 rev = dev->revision;  in hpt3x2n_init_one()
505 	switch (dev->device) {  in hpt3x2n_init_one()
509 			return -ENODEV;  in hpt3x2n_init_one()
514 			return -ENODEV;  in hpt3x2n_init_one()
519 			return -ENODEV;  in hpt3x2n_init_one()
524 			return -ENODEV;  in hpt3x2n_init_one()
531 		dev_err(&dev->dev,"PCI table is bogus, please report (%d)\n",  in hpt3x2n_init_one()
532 			dev->device);  in hpt3x2n_init_one()
533 		return -ENODEV;  in hpt3x2n_init_one()
550 	 * So,  we manually disable the non-existing channel here  in hpt3x2n_init_one()
553 	if (dev->device == PCI_DEVICE_ID_TTI_HPT371) {  in hpt3x2n_init_one()
581 		dev_err(&dev->dev, "DPLL did not stabilize!\n");  in hpt3x2n_init_one()
582 		return -ENODEV;  in hpt3x2n_init_one()
585 	dev_info(&dev->dev, "bus clock %dMHz, using 66MHz DPLL\n", pci_mhz);  in hpt3x2n_init_one()
599 	if (dev->device == PCI_DEVICE_ID_TTI_HPT371)  in hpt3x2n_init_one()
626 MODULE_DESCRIPTION("low-level driver for the Highpoint HPT3xxN");