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| 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 | |
| 9 | static bool probe_4drives; |
| 10 | |
| 11 | module_param_named(probe, probe_4drives, bool, 0); |
| 12 | MODULE_PARM_DESC(probe, "probe for generic IDE chipset with 4 drives/port"); |
| 13 | |
| 14 | static void ide_4drives_init_dev(ide_drive_t *drive) |
| 15 | { |
| 16 | if (drive->hwif->channel) |
| 17 | drive->select ^= 0x20; |
| 18 | } |
| 19 | |
| 20 | static const struct ide_port_ops ide_4drives_port_ops = { |
| 21 | .init_dev = ide_4drives_init_dev, |
| 22 | }; |
| 23 | |
| 24 | static 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 | |
| 31 | static 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 | |
| 60 | module_init(ide_4drives_init); |
| 61 | |
| 62 | MODULE_AUTHOR("Bartlomiej Zolnierkiewicz"); |
| 63 | MODULE_DESCRIPTION("generic IDE chipset with 4 drives/port support"); |
| 64 | MODULE_LICENSE("GPL"); |
| 65 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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v3.9
