/* 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
