1 // SPDX-License-Identifier: GPL-2.0-only
3  *    pata_artop.c - ARTOP ATA controller driver
9  *	Copyright (C) 1999-2002	Andre Hedrick <andre@linux-ide.org>
11  *		driver by Thibaut VARENE <varenet@parisc-linux.org>
34  *	The ARTOP has 33 Mhz and "over clocked" timing tables. Until we
43  *	artop62x0_pre_reset	-	probe begin
57 	struct ata_port *ap = link->ap;  in artop62x0_pre_reset()
58 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in artop62x0_pre_reset()
60 	/* Odd numbered device ids are the units with enable bits. */  in artop62x0_pre_reset()
61 	if ((pdev->device & 1) &&  in artop62x0_pre_reset()
62 	    !pci_test_config_bits(pdev, &artop_enable_bits[ap->port_no]))  in artop62x0_pre_reset()
63 		return -ENOENT;  in artop62x0_pre_reset()
69  *	artop6260_cable_detect	-	identify cable type
77 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in artop6260_cable_detect()
80 	if (tmp & (1 << ap->port_no))  in artop6260_cable_detect()
86  *	artop6210_load_piomode - Load a set of PATA PIO timings
101 	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);  in artop6210_load_piomode()
102 	int dn = adev->devno + 2 * ap->port_no;  in artop6210_load_piomode()
108 	/* Load the PIO timing active/recovery bits */  in artop6210_load_piomode()
113  *	artop6210_set_piomode - Initialize host controller PATA PIO timings
118  *	ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
120  *	bits as required.
128 	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);  in artop6210_set_piomode()
129 	int dn = adev->devno + 2 * ap->port_no;  in artop6210_set_piomode()
132 	artop6210_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);  in artop6210_set_piomode()
134 	/* Clear the UDMA mode bits (set_dmamode will redo this if needed) */  in artop6210_set_piomode()
141  *	artop6260_load_piomode - Initialize host controller PATA PIO timings
155 	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);  in artop6260_load_piomode()
156 	int dn = adev->devno + 2 * ap->port_no;  in artop6260_load_piomode()
162 	/* Load the PIO timing active/recovery bits */  in artop6260_load_piomode()
167  *	artop6260_set_piomode - Initialize host controller PATA PIO timings
172  *	ARTOP we must also clear the UDMA bits if we are not doing UDMA. In
174  *	bits as required.
182 	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);  in artop6260_set_piomode()
185 	artop6260_load_piomode(ap, adev, adev->pio_mode - XFER_PIO_0);  in artop6260_set_piomode()
187 	/* Clear the UDMA mode bits (set_dmamode will redo this if needed) */  in artop6260_set_piomode()
188 	pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);  in artop6260_set_piomode()
189 	ultra &= ~(7 << (4  * adev->devno));	/* One nibble per drive */  in artop6260_set_piomode()
190 	pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);  in artop6260_set_piomode()
194  *	artop6210_set_dmamode - Initialize host controller PATA PIO timings
198  *	Set DMA mode for device, in host controller PCI config space.
207 	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);  in artop6210_set_dmamode()
208 	int dn = adev->devno + 2 * ap->port_no;  in artop6210_set_dmamode()
211 	if (adev->dma_mode == XFER_MW_DMA_0)  in artop6210_set_dmamode()
216 	/* Load the PIO timing active/recovery bits */  in artop6210_set_dmamode()
222 	/* Add ultra DMA bits if in UDMA mode */  in artop6210_set_dmamode()
223 	if (adev->dma_mode >= XFER_UDMA_0) {  in artop6210_set_dmamode()
224 		u8 mode = (adev->dma_mode - XFER_UDMA_0) + 1 - clock;  in artop6210_set_dmamode()
233  *	artop6260_set_dmamode - Initialize host controller PATA PIO timings
237  *	Set DMA mode for device, in host controller PCI config space. The
247 	struct pci_dev *pdev	= to_pci_dev(ap->host->dev);  in artop6260_set_dmamode()
250 	if (adev->dma_mode == XFER_MW_DMA_0)  in artop6260_set_dmamode()
255 	/* Load the PIO timing active/recovery bits */  in artop6260_set_dmamode()
258 	/* Add ultra DMA bits if in UDMA mode */  in artop6260_set_dmamode()
259 	pci_read_config_byte(pdev, 0x44 + ap->port_no, &ultra);  in artop6260_set_dmamode()
260 	ultra &= ~(7 << (4  * adev->devno));	/* One nibble per drive */  in artop6260_set_dmamode()
261 	if (adev->dma_mode >= XFER_UDMA_0) {  in artop6260_set_dmamode()
262 		u8 mode = adev->dma_mode - XFER_UDMA_0 + 1 - clock;  in artop6260_set_dmamode()
265 		ultra |= (mode << (4 * adev->devno));  in artop6260_set_dmamode()
267 	pci_write_config_byte(pdev, 0x44 + ap->port_no, ultra);  in artop6260_set_dmamode()
271  *	artop6210_qc_defer	-	implement serialization
279 	struct ata_host *host = qc->ap->host;  in artop6210_qc_defer()
280 	struct ata_port *alt = host->ports[1 ^ qc->ap->port_no];  in artop6210_qc_defer()
290 	if (alt && alt->qc_active)  in artop6210_qc_defer()
320 	switch (pdev->device) {  in atp8xx_fixup()
330 		/* Clear reset & test bits */  in atp8xx_fixup()
349  *	artop_init_one - Register ARTOP ATA PCI device with kernel services
359  *	Zero on success, or -ERRNO value.
395 	ata_print_version_once(&pdev->dev, DRV_VERSION);  in artop_init_one()
401 	switch (id->driver_data) {  in artop_init_one()
464 MODULE_DESCRIPTION("SCSI low-level driver for ARTOP PATA");