#include <linux/kernel.h> #include <linux/init.h> #include <linux/module.h> #include <linux/ide.h> #define DRV_NAME "ide-4drives" static int probe_4drives; module_param_named(probe, probe_4drives, bool, 0); MODULE_PARM_DESC(probe, "probe for generic IDE chipset with 4 drives/port"); static void ide_4drives_init_dev(ide_drive_t *drive) { if (drive->hwif->channel) drive->select ^= 0x20; } static const struct ide_port_ops ide_4drives_port_ops = { .init_dev = ide_4drives_init_dev, }; static const struct ide_port_info ide_4drives_port_info = { .port_ops = &ide_4drives_port_ops, .host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_NO_DMA, }; static int __init ide_4drives_init(void) { unsigned long base = 0x1f0, ctl = 0x3f6; hw_regs_t hw, *hws[] = { &hw, &hw, NULL, NULL }; if (probe_4drives == 0) return -ENODEV; if (!request_region(base, 8, DRV_NAME)) { printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", DRV_NAME, base, base + 7); return -EBUSY; } if (!request_region(ctl, 1, DRV_NAME)) { printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n", DRV_NAME, ctl); release_region(base, 8); return -EBUSY; } memset(&hw, 0, sizeof(hw)); ide_std_init_ports(&hw, base, ctl); hw.irq = 14; hw.chipset = ide_4drives; return ide_host_add(&ide_4drives_port_info, hws, NULL); } module_init(ide_4drives_init); MODULE_AUTHOR("Bartlomiej Zolnierkiewicz"); MODULE_DESCRIPTION("generic IDE chipset with 4 drives/port support"); MODULE_LICENSE("GPL");