/* * pata-isapnp.c - ISA PnP PATA controller driver. * Copyright 2005/2006 Red Hat Inc <alan@redhat.com>, all rights reserved. * * Based in part on ide-pnp.c by Andrey Panin <pazke@donpac.ru> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/isapnp.h> #include <linux/init.h> #include <linux/blkdev.h> #include <linux/delay.h> #include <scsi/scsi_host.h> #include <linux/ata.h> #include <linux/libata.h> #define DRV_NAME "pata_isapnp" #define DRV_VERSION "0.2.2" static struct scsi_host_template isapnp_sht = { ATA_PIO_SHT(DRV_NAME), }; static struct ata_port_operations isapnp_port_ops = { .inherits = &ata_sff_port_ops, .cable_detect = ata_cable_40wire, }; /** * isapnp_init_one - attach an isapnp interface * @idev: PnP device * @dev_id: matching detect line * * Register an ISA bus IDE interface. Such interfaces are PIO 0 and * non shared IRQ. */ static int isapnp_init_one(struct pnp_dev *idev, const struct pnp_device_id *dev_id) { struct ata_host *host; struct ata_port *ap; void __iomem *cmd_addr, *ctl_addr; int irq = 0; irq_handler_t handler = NULL; if (pnp_port_valid(idev, 0) == 0) return -ENODEV; if (pnp_irq_valid(idev, 0)) { irq = pnp_irq(idev, 0); handler = ata_sff_interrupt; } /* allocate host */ host = ata_host_alloc(&idev->dev, 1); if (!host) return -ENOMEM; /* acquire resources and fill host */ cmd_addr = devm_ioport_map(&idev->dev, pnp_port_start(idev, 0), 8); if (!cmd_addr) return -ENOMEM; ap = host->ports[0]; ap->ops = &isapnp_port_ops; ap->pio_mask = 1; ap->flags |= ATA_FLAG_SLAVE_POSS; ap->ioaddr.cmd_addr = cmd_addr; if (pnp_port_valid(idev, 1) == 0) { ctl_addr = devm_ioport_map(&idev->dev, pnp_port_start(idev, 1), 1); ap->ioaddr.altstatus_addr = ctl_addr; ap->ioaddr.ctl_addr = ctl_addr; } ata_sff_std_ports(&ap->ioaddr); ata_port_desc(ap, "cmd 0x%llx ctl 0x%llx", (unsigned long long)pnp_port_start(idev, 0), (unsigned long long)pnp_port_start(idev, 1)); /* activate */ return ata_host_activate(host, irq, handler, 0, &isapnp_sht); } /** * isapnp_remove_one - unplug an isapnp interface * @idev: PnP device * * Remove a previously configured PnP ATA port. Called only on module * unload events as the core does not currently deal with ISAPnP docking. */ static void isapnp_remove_one(struct pnp_dev *idev) { struct device *dev = &idev->dev; struct ata_host *host = dev_get_drvdata(dev); ata_host_detach(host); } static struct pnp_device_id isapnp_devices[] = { /* Generic ESDI/IDE/ATA compatible hard disk controller */ {.id = "PNP0600", .driver_data = 0}, {.id = ""} }; MODULE_DEVICE_TABLE(pnp, isapnp_devices); static struct pnp_driver isapnp_driver = { .name = DRV_NAME, .id_table = isapnp_devices, .probe = isapnp_init_one, .remove = isapnp_remove_one, }; static int __init isapnp_init(void) { return pnp_register_driver(&isapnp_driver); } static void __exit isapnp_exit(void) { pnp_unregister_driver(&isapnp_driver); } MODULE_AUTHOR("Alan Cox"); MODULE_DESCRIPTION("low-level driver for ISA PnP ATA"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_VERSION); module_init(isapnp_init); module_exit(isapnp_exit);