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- /*
- * ohare.h: definitions for using the "O'Hare" I/O controller chip.
- *
- * Copyright (C) 1997 Paul Mackerras.
- */
-
- /* offset from ohare base for feature control register */
- #define OHARE_FEATURE_REG 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_RESET 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_IDE_ENABLE 0x20
- #define OH_BAY_ENABLE 0x80
- #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
- #define OH_IDECD_POWER 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
-