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- /* SPDX-License-Identifier: GPL-2.0 */
- #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 */
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