diff options
| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-04-18 00:46:34 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-04-18 00:46:34 +0200 |
| commit | ffd4f6f0eed0423652826f3775077d11918b4180 (patch) | |
| tree | f574449a3fa0da029d42b401336adefa42bca06b /drivers/ide/legacy | |
| parent | ide: remove ppc ifdef from init_ide_data() (diff) | |
| download | linux-ffd4f6f0eed0423652826f3775077d11918b4180.tar.xz linux-ffd4f6f0eed0423652826f3775077d11918b4180.zip | |
ide: add ide-4drives host driver (take 3)
CONFIG_BLK_DEV_4DRIVES deserves its own host driver:
* Add drivers/ide/legacy/ide-4drives.c and move "4drives" support there.
* Add ide-4drives.o in the link order after all other legacy host
drivers enabled by "ide0=" options (they all are mutually exclusive).
* Make ide-4drives host driver probe itself for IDE devices instead of
indirectly depending on ide_generic host driver.
* Add "probe" module parameter to ide-4drives and update documentation.
v2:
* s/paramater/parameter/ in ide.txt. (Noticed by Randy Dunlap)
v3:
* s/ide_4drives.probe/ide-4drives.probe/ in help entry.
(Noticed by Sergei Shtylyov)
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/legacy')
| -rw-r--r-- | drivers/ide/legacy/Makefile | 1 | ||||
| -rw-r--r-- | drivers/ide/legacy/ide-4drives.c | 46 |
2 files changed, 47 insertions, 0 deletions
diff --git a/drivers/ide/legacy/Makefile b/drivers/ide/legacy/Makefile index 7043ec7d1e05..6939329f89e8 100644 --- a/drivers/ide/legacy/Makefile +++ b/drivers/ide/legacy/Makefile @@ -6,6 +6,7 @@ obj-$(CONFIG_BLK_DEV_UMC8672) += umc8672.o obj-$(CONFIG_BLK_DEV_DTC2278) += dtc2278.o obj-$(CONFIG_BLK_DEV_HT6560B) += ht6560b.o obj-$(CONFIG_BLK_DEV_QD65XX) += qd65xx.o +obj-$(CONFIG_BLK_DEV_4DRIVES) += ide-4drives.o obj-$(CONFIG_BLK_DEV_GAYLE) += gayle.o obj-$(CONFIG_BLK_DEV_FALCON_IDE) += falconide.o diff --git a/drivers/ide/legacy/ide-4drives.c b/drivers/ide/legacy/ide-4drives.c new file mode 100644 index 000000000000..5aa7e93cfd31 --- /dev/null +++ b/drivers/ide/legacy/ide-4drives.c @@ -0,0 +1,46 @@ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/ide.h> + +int probe_4drives = 0; + +module_param_named(probe, probe_4drives, bool, 0); +MODULE_PARM_DESC(probe, "probe for generic IDE chipset with 4 drives/port"); + +static int __init ide_4drives_init(void) +{ + ide_hwif_t *hwif, *mate; + u8 idx[4] = { 0, 1, 0xff, 0xff }; + + if (probe_4drives == 0) + return -ENODEV; + + hwif = &ide_hwifs[0]; + mate = &ide_hwifs[1]; + + memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); + + mate->irq = hwif->irq; + + mate->chipset = hwif->chipset = ide_4drives; + + mate->drives[0].select.all ^= 0x20; + mate->drives[1].select.all ^= 0x20; + + hwif->mate = mate; + mate->mate = hwif; + + hwif->serialized = mate->serialized = 1; + + ide_device_add(idx, NULL); + + return 0; +} + +module_init(ide_4drives_init); + +MODULE_AUTHOR("Bartlomiej Zolnierkiewicz"); +MODULE_DESCRIPTION("generic IDE chipset with 4 drives/port support"); +MODULE_LICENSE("GPL"); |