drivers/ata/pata_jmicron.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  *    pata_jmicron.c - JMicron ATA driver for non AHCI mode. This drives the
31  *	jmicron_pre_reset	-	check for 40/80 pin
38  *	either as primary or secondary (or neither). We don't do any policy
44 	struct ata_port *ap = link->ap;  in jmicron_pre_reset()
45 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);  in jmicron_pre_reset()
48 	int port_mask = 1<< (4 * ap->port_no);  in jmicron_pre_reset()
49 	int port = ap->port_no;  in jmicron_pre_reset()
55 		return -ENOENT;  in jmicron_pre_reset()
69 	   as the internal primary channel */  in jmicron_pre_reset()
86 			return -ENOENT;  in jmicron_pre_reset()
87 		if (control & (1 << 3))	/* 40/80 pin primary */  in jmicron_pre_reset()
88 			ap->cbl = ATA_CBL_PATA40;  in jmicron_pre_reset()
90 			ap->cbl = ATA_CBL_PATA80;  in jmicron_pre_reset()
95 			return -ENOENT;  in jmicron_pre_reset()
97 			ap->cbl = ATA_CBL_PATA40;  in jmicron_pre_reset()
99 			ap->cbl = ATA_CBL_PATA80;  in jmicron_pre_reset()
102 		ap->cbl = ATA_CBL_SATA;  in jmicron_pre_reset()
121  *	jmicron_init_one - Register Jmicron ATA PCI device with kernel services
125  *	Called from kernel PCI layer.
128  *	Inherited from PCI layer (may sleep).
131  *	Zero on success, or -ERRNO value.
170 MODULE_DESCRIPTION("SCSI low-level driver for Jmicron PATA ports");