1 // SPDX-License-Identifier: GPL-2.0-only
3  * ixp4xx PATA/Compact Flash driver
4  * Copyright (C) 2006-07 Tower Technologies
7  * An ATA driver to handle a Compact Flash connected
31 		dev->pio_mode = XFER_PIO_0;  in ixp4xx_set_mode()
32 		dev->xfer_mode = XFER_PIO_0;  in ixp4xx_set_mode()
33 		dev->xfer_shift = ATA_SHIFT_PIO;  in ixp4xx_set_mode()
34 		dev->flags |= ATA_DFLAG_PIO;  in ixp4xx_set_mode()
45 	struct ata_port *ap = qc->dev->link->ap;  in ixp4xx_mmio_data_xfer()
46 	void __iomem *mmio = ap->ioaddr.data_addr;  in ixp4xx_mmio_data_xfer()
47 	struct ixp4xx_pata_data *data = dev_get_platdata(ap->host->dev);  in ixp4xx_mmio_data_xfer()
52 	*data->cs0_cfg &= ~(0x01);  in ixp4xx_mmio_data_xfer()
66 		unsigned char *trailing_buf = buf + buflen - 1;  in ixp4xx_mmio_data_xfer()
79 	*data->cs0_cfg |= 0x01;  in ixp4xx_mmio_data_xfer()
99 	struct ata_ioports *ioaddr = &ap->ioaddr;  in ixp4xx_setup_port()
103 	ioaddr->cmd_addr	= data->cs0;  in ixp4xx_setup_port()
104 	ioaddr->altstatus_addr	= data->cs1 + 0x06;  in ixp4xx_setup_port()
105 	ioaddr->ctl_addr	= data->cs1 + 0x06;  in ixp4xx_setup_port()
115 	*(unsigned long *)&ioaddr->data_addr		^= 0x02;  in ixp4xx_setup_port()
116 	*(unsigned long *)&ioaddr->cmd_addr		^= 0x03;  in ixp4xx_setup_port()
117 	*(unsigned long *)&ioaddr->altstatus_addr	^= 0x03;  in ixp4xx_setup_port()
118 	*(unsigned long *)&ioaddr->ctl_addr		^= 0x03;  in ixp4xx_setup_port()
119 	*(unsigned long *)&ioaddr->error_addr		^= 0x03;  in ixp4xx_setup_port()
120 	*(unsigned long *)&ioaddr->feature_addr		^= 0x03;  in ixp4xx_setup_port()
121 	*(unsigned long *)&ioaddr->nsect_addr		^= 0x03;  in ixp4xx_setup_port()
122 	*(unsigned long *)&ioaddr->lbal_addr		^= 0x03;  in ixp4xx_setup_port()
123 	*(unsigned long *)&ioaddr->lbam_addr		^= 0x03;  in ixp4xx_setup_port()
124 	*(unsigned long *)&ioaddr->lbah_addr		^= 0x03;  in ixp4xx_setup_port()
125 	*(unsigned long *)&ioaddr->device_addr		^= 0x03;  in ixp4xx_setup_port()
126 	*(unsigned long *)&ioaddr->status_addr		^= 0x03;  in ixp4xx_setup_port()
127 	*(unsigned long *)&ioaddr->command_addr		^= 0x03;  in ixp4xx_setup_port()
141 	struct ixp4xx_pata_data *data = dev_get_platdata(&pdev->dev);  in ixp4xx_pata_probe()
149 		return -EINVAL;  in ixp4xx_pata_probe()
152 	host = ata_host_alloc(&pdev->dev, 1);  in ixp4xx_pata_probe()
154 		return -ENOMEM;  in ixp4xx_pata_probe()
157 	ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));  in ixp4xx_pata_probe()
161 	data->cs0 = devm_ioremap(&pdev->dev, cs0->start, 0x1000);  in ixp4xx_pata_probe()
162 	data->cs1 = devm_ioremap(&pdev->dev, cs1->start, 0x1000);  in ixp4xx_pata_probe()
164 	if (!data->cs0 || !data->cs1)  in ixp4xx_pata_probe()
165 		return -ENOMEM;  in ixp4xx_pata_probe()
173 		return -EINVAL;  in ixp4xx_pata_probe()
176 	*data->cs0_cfg = data->cs0_bits;  in ixp4xx_pata_probe()
177 	*data->cs1_cfg = data->cs1_bits;  in ixp4xx_pata_probe()
179 	ap = host->ports[0];  in ixp4xx_pata_probe()
181 	ap->ops	= &ixp4xx_port_ops;  in ixp4xx_pata_probe()
182 	ap->pio_mask = ATA_PIO4;  in ixp4xx_pata_probe()
183 	ap->flags |= ATA_FLAG_NO_ATAPI;  in ixp4xx_pata_probe()
185 	ixp4xx_setup_port(ap, data, cs0->start, cs1->start);  in ixp4xx_pata_probe()
187 	ata_print_version_once(&pdev->dev, DRV_VERSION);  in ixp4xx_pata_probe()
204 MODULE_DESCRIPTION("low-level driver for ixp4xx Compact Flash PATA");