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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /drivers/ide/ide-4drives.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'drivers/ide/ide-4drives.c')
-rw-r--r-- | drivers/ide/ide-4drives.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/ide/ide-4drives.c b/drivers/ide/ide-4drives.c new file mode 100644 index 00000000..547d7cf2 --- /dev/null +++ b/drivers/ide/ide-4drives.c @@ -0,0 +1,64 @@ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/ide.h> + +#define DRV_NAME "ide-4drives" + +static bool 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 | + IDE_HFLAG_4DRIVES, + .chipset = ide_4drives, +}; + +static int __init ide_4drives_init(void) +{ + unsigned long base = 0x1f0, ctl = 0x3f6; + struct ide_hw hw, *hws[] = { &hw, &hw }; + + 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; + + return ide_host_add(&ide_4drives_port_info, hws, 2, NULL); +} + +module_init(ide_4drives_init); + +MODULE_AUTHOR("Bartlomiej Zolnierkiewicz"); +MODULE_DESCRIPTION("generic IDE chipset with 4 drives/port support"); +MODULE_LICENSE("GPL"); |