diff options
| -rw-r--r-- | Documentation/ide/ide.txt | 5 | ||||
| -rw-r--r-- | drivers/ide/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/ide/ide.c | 15 | ||||
| -rw-r--r-- | drivers/ide/legacy/Makefile | 1 | ||||
| -rw-r--r-- | drivers/ide/legacy/ide-4drives.c | 46 |
5 files changed, 55 insertions, 16 deletions
diff --git a/Documentation/ide/ide.txt b/Documentation/ide/ide.txt index 18c02df2f78f..486c699f4aea 100644 --- a/Documentation/ide/ide.txt +++ b/Documentation/ide/ide.txt @@ -222,8 +222,6 @@ Summary of ide driver parameters for kernel command line both the respective primary and secondary channel to take effect. - "idex=four" : four drives on idex and ide(x^1) share same ports - "idex=reset" : reset interface after probe "idex=ata66" : informs the interface that it has an 80c cable @@ -250,6 +248,9 @@ Also for legacy CMD640 host driver (cmd640) you need to use "probe_vlb" kernel paremeter to enable probing for VLB version of the chipset (PCI ones are detected automatically). +You also need to use "probe" kernel parameter for ide-4drives driver +(support for IDE generic chipset with four drives on one port). + ================================================================================ Some Terminology diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig index 29dd99caaf50..ec6b4a80e333 100644 --- a/drivers/ide/Kconfig +++ b/drivers/ide/Kconfig @@ -1035,8 +1035,8 @@ config BLK_DEV_4DRIVES Certain older chipsets, including the Tekram 690CD, use a single set of I/O ports at 0x1f0 to control up to four drives, instead of the customary two drives per port. Support for this can be enabled at - runtime using the "ide0=four" kernel boot parameter if you say Y - here. + runtime using the "ide-4drives.probe" kernel boot parameter if you + say Y here. config BLK_DEV_ALI14XX tristate "ALI M14xx support" diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index adecf45a0849..690b5ff4d88f 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -976,6 +976,7 @@ extern int probe_dtc2278; extern int probe_ht6560b; extern int probe_qd65xx; extern int cmd640_vlb; +extern int probe_4drives; static int __initdata is_chipset_set; @@ -1187,19 +1188,9 @@ static int __init ide_setup(char *s) #endif #ifdef CONFIG_BLK_DEV_4DRIVES case -11: /* "four" drives on one set of ports */ - { - ide_hwif_t *mate = &ide_hwifs[hw^1]; - mate->drives[0].select.all ^= 0x20; - mate->drives[1].select.all ^= 0x20; - hwif->chipset = mate->chipset = ide_4drives; - mate->irq = hwif->irq; - memcpy(mate->io_ports, hwif->io_ports, sizeof(hwif->io_ports)); - hwif->mate = mate; - mate->mate = hwif; - hwif->serialized = mate->serialized = 1; + probe_4drives = 1; goto obsolete_option; - } -#endif /* CONFIG_BLK_DEV_4DRIVES */ +#endif case -10: /* minus10 */ case -9: /* minus9 */ case -8: /* minus8 */ 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"); |