1 2#include <linux/kernel.h> 3#include <linux/init.h> 4#include <linux/module.h> 5#include <linux/ide.h> 6 7#define DRV_NAME "ide-4drives" 8 9static int probe_4drives; 10 11module_param_named(probe, probe_4drives, bool, 0); 12MODULE_PARM_DESC(probe, "probe for generic IDE chipset with 4 drives/port"); 13 14static void ide_4drives_init_dev(ide_drive_t *drive) 15{ 16 if (drive->hwif->channel) 17 drive->select ^= 0x20; 18} 19 20static const struct ide_port_ops ide_4drives_port_ops = { 21 .init_dev = ide_4drives_init_dev, 22}; 23 24static const struct ide_port_info ide_4drives_port_info = { 25 .port_ops = &ide_4drives_port_ops, 26 .host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_NO_DMA | 27 IDE_HFLAG_4DRIVES, 28 .chipset = ide_4drives, 29}; 30 31static int __init ide_4drives_init(void) 32{ 33 unsigned long base = 0x1f0, ctl = 0x3f6; 34 struct ide_hw hw, *hws[] = { &hw, &hw }; 35 36 if (probe_4drives == 0) 37 return -ENODEV; 38 39 if (!request_region(base, 8, DRV_NAME)) { 40 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", 41 DRV_NAME, base, base + 7); 42 return -EBUSY; 43 } 44 45 if (!request_region(ctl, 1, DRV_NAME)) { 46 printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n", 47 DRV_NAME, ctl); 48 release_region(base, 8); 49 return -EBUSY; 50 } 51 52 memset(&hw, 0, sizeof(hw)); 53 54 ide_std_init_ports(&hw, base, ctl); 55 hw.irq = 14; 56 57 return ide_host_add(&ide_4drives_port_info, hws, 2, NULL); 58} 59 60module_init(ide_4drives_init); 61 62MODULE_AUTHOR("Bartlomiej Zolnierkiewicz"); 63MODULE_DESCRIPTION("generic IDE chipset with 4 drives/port support"); 64MODULE_LICENSE("GPL"); 65