mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 10:01:43 +00:00
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
#ifndef _ASM_POWERPC_OHARE_H
|
|
#define _ASM_POWERPC_OHARE_H
|
|
#ifdef __KERNEL__
|
|
/*
|
|
* ohare.h: definitions for using the "O'Hare" I/O controller chip.
|
|
*
|
|
* Copyright (C) 1997 Paul Mackerras.
|
|
*
|
|
* BenH: Changed to match those of heathrow (but not all of them). Please
|
|
* check if I didn't break anything (especially the media bay).
|
|
*/
|
|
|
|
/* offset from ohare base for feature control register */
|
|
#define OHARE_MBCR 0x34
|
|
#define OHARE_FCR 0x38
|
|
|
|
/*
|
|
* Bits in feature control register.
|
|
* These were mostly derived by experiment on a powerbook 3400
|
|
* and may differ for other machines.
|
|
*/
|
|
#define OH_SCC_RESET 1
|
|
#define OH_BAY_POWER_N 2 /* a guess */
|
|
#define OH_BAY_PCI_ENABLE 4 /* a guess */
|
|
#define OH_BAY_IDE_ENABLE 8
|
|
#define OH_BAY_FLOPPY_ENABLE 0x10
|
|
#define OH_IDE0_ENABLE 0x20
|
|
#define OH_IDE0_RESET_N 0x40 /* a guess */
|
|
#define OH_BAY_DEV_MASK 0x1c
|
|
#define OH_BAY_RESET_N 0x80
|
|
#define OH_IOBUS_ENABLE 0x100 /* IOBUS seems to be IDE */
|
|
#define OH_SCC_ENABLE 0x200
|
|
#define OH_MESH_ENABLE 0x400
|
|
#define OH_FLOPPY_ENABLE 0x800
|
|
#define OH_SCCA_IO 0x4000
|
|
#define OH_SCCB_IO 0x8000
|
|
#define OH_VIA_ENABLE 0x10000 /* Is apparently wrong, to be verified */
|
|
#define OH_IDE1_RESET_N 0x800000
|
|
|
|
/*
|
|
* Bits to set in the feature control register on PowerBooks.
|
|
*/
|
|
#define PBOOK_FEATURES (OH_IDE_ENABLE | OH_SCC_ENABLE | \
|
|
OH_MESH_ENABLE | OH_SCCA_IO | OH_SCCB_IO)
|
|
|
|
/*
|
|
* A magic value to put into the feature control register of the
|
|
* "ohare" I/O controller on Starmaxes to enable the IDE CD interface.
|
|
* Contributed by Harry Eaton.
|
|
*/
|
|
#define STARMAX_FEATURES 0xbeff7a
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _ASM_POWERPC_OHARE_H */
|