projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| ffd4f6f0 BZ |
1 | |
| 2 | #include <linux/kernel.h> | |
| 3 | #include <linux/init.h> | |
| 4 | #include <linux/module.h> | |
| 5 | #include <linux/ide.h> | |
| 6 | ||
| 2c4be251 BZ |
7 | #define DRV_NAME "ide-4drives" |
| 8 | ||
| 90ab5ee9 | 9 | static bool probe_4drives; |
| ffd4f6f0 BZ |
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 | ||
| e6d95bd1 | 14 | static void ide_4drives_init_dev(ide_drive_t *drive) |
| f333f92b | 15 | { |
| e6d95bd1 | 16 | if (drive->hwif->channel) |
| 7f612f27 | 17 | drive->select ^= 0x20; |
| f333f92b BZ |
18 | } |
| 19 | ||
| 20 | static const struct ide_port_ops ide_4drives_port_ops = { | |
| e6d95bd1 | 21 | .init_dev = ide_4drives_init_dev, |
| f333f92b BZ |
22 | }; |
| 23 | ||
| 24 | static const struct ide_port_info ide_4drives_port_info = { | |
| 25 | .port_ops = &ide_4drives_port_ops, | |
| c094ea07 BZ |
26 | .host_flags = IDE_HFLAG_SERIALIZE | IDE_HFLAG_NO_DMA | |
| 27 | IDE_HFLAG_4DRIVES, | |
| 29e52cf7 | 28 | .chipset = ide_4drives, |
| f333f92b BZ |
29 | }; |
| 30 | ||
| ffd4f6f0 BZ |
31 | static int __init ide_4drives_init(void) |
| 32 | { | |
| 2c4be251 | 33 | unsigned long base = 0x1f0, ctl = 0x3f6; |
| 9f36d314 | 34 | struct ide_hw hw, *hws[] = { &hw, &hw }; |
| ffd4f6f0 BZ |
35 | |
| 36 | if (probe_4drives == 0) | |
| 37 | return -ENODEV; | |
| 38 | ||
| 2c4be251 BZ |
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 | ||
| dfd87842 | 52 | memset(&hw, 0, sizeof(hw)); |
| ffd4f6f0 | 53 | |
| 2c4be251 | 54 | ide_std_init_ports(&hw, base, ctl); |
| dfd87842 | 55 | hw.irq = 14; |
| ffd4f6f0 | 56 | |
| dca39830 | 57 | return ide_host_add(&ide_4drives_port_info, hws, 2, NULL); |
| ffd4f6f0 BZ |
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"); |