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ohare.h

#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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