1 // SPDX-License-Identifier: GPL-2.0-only
3  *    pata_it8213.c - iTE Tech. Inc.  IT8213 PATA driver
25  *	it8213_pre_reset	-	probe begin
38 	struct ata_port *ap = link->ap;  in it8213_pre_reset()
39 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in it8213_pre_reset()
40 	if (!pci_test_config_bits(pdev, &it8213_enable_bits[ap->port_no]))  in it8213_pre_reset()
41 		return -ENOENT;  in it8213_pre_reset()
47  *	it8213_cable_detect	-	check for 40/80 pin
56 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in it8213_cable_detect()
59 	if (tmp & 2)	/* The initial docs are incorrect */  in it8213_cable_detect()
65  *	it8213_set_piomode - Initialize host controller PATA PIO timings
77 	unsigned int pio	= adev->pio_mode - XFER_PIO_0;  in it8213_set_piomode()
78 	struct pci_dev *dev	= to_pci_dev(ap->host->dev);  in it8213_set_piomode()
79 	unsigned int master_port = ap->port_no ? 0x42 : 0x40;  in it8213_set_piomode()
84 	 *	See Intel Document 298600-004 for the timing programing rules  in it8213_set_piomode()
99 	/* Bit 2 is set for ATAPI on the IT8213 - reverse of ICH/PIIX */  in it8213_set_piomode()
100 	if (adev->class != ATA_DEV_ATA)  in it8213_set_piomode()
106 	if (adev->devno == 0) {  in it8213_set_piomode()
129  *	it8213_set_dmamode - Initialize host controller PATA DMA timings
142 	struct pci_dev *dev	= to_pci_dev(ap->host->dev);  in it8213_set_dmamode()
144 	u8 speed		= adev->dma_mode;  in it8213_set_dmamode()
145 	int devid		= adev->devno;  in it8213_set_dmamode()
159 		unsigned int udma = adev->dma_mode - XFER_UDMA_0;  in it8213_set_dmamode()
165 		u_speed = min(2 - (udma & 1), udma);  in it8213_set_dmamode()
192 		unsigned int mwdma	= adev->dma_mode - XFER_MW_DMA_0;  in it8213_set_dmamode()
198 		int pio = needed_pio[mwdma] - XFER_PIO_0;  in it8213_set_dmamode()
205 		if (adev->pio_mode < needed_pio[mwdma])  in it8213_set_dmamode()
215 			slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);  in it8213_set_dmamode()
246  *	it8213_init_one - Register 8213 ATA PCI device with kernel services
256  *	Zero on success, or -ERRNO value.
271 	ata_print_version_once(&pdev->dev, DRV_VERSION);  in it8213_init_one()
296 MODULE_DESCRIPTION("SCSI low-level driver for the ITE 8213");