1 #ifndef _ASM_POWERPC_OHARE_H
2 #define _ASM_POWERPC_OHARE_H
5 * ohare.h: definitions for using the "O'Hare" I/O controller chip.
7 * Copyright (C) 1997 Paul Mackerras.
9 * BenH: Changed to match those of heathrow (but not all of them). Please
10 * check if I didn't break anything (especially the media bay).
13 /* offset from ohare base for feature control register */
14 #define OHARE_MBCR 0x34
15 #define OHARE_FCR 0x38
18 * Bits in feature control register.
19 * These were mostly derived by experiment on a powerbook 3400
20 * and may differ for other machines.
22 #define OH_SCC_RESET 1
23 #define OH_BAY_POWER_N 2 /* a guess */
24 #define OH_BAY_PCI_ENABLE 4 /* a guess */
25 #define OH_BAY_IDE_ENABLE 8
26 #define OH_BAY_FLOPPY_ENABLE 0x10
27 #define OH_IDE0_ENABLE 0x20
28 #define OH_IDE0_RESET_N 0x40 /* a guess */
29 #define OH_BAY_DEV_MASK 0x1c
30 #define OH_BAY_RESET_N 0x80
31 #define OH_IOBUS_ENABLE 0x100 /* IOBUS seems to be IDE */
32 #define OH_SCC_ENABLE 0x200
33 #define OH_MESH_ENABLE 0x400
34 #define OH_FLOPPY_ENABLE 0x800
35 #define OH_SCCA_IO 0x4000
36 #define OH_SCCB_IO 0x8000
37 #define OH_VIA_ENABLE 0x10000 /* Is apparently wrong, to be verified */
38 #define OH_IDE1_RESET_N 0x800000
41 * Bits to set in the feature control register on PowerBooks.
43 #define PBOOK_FEATURES (OH_IDE_ENABLE | OH_SCC_ENABLE | \
44 OH_MESH_ENABLE | OH_SCCA_IO | OH_SCCB_IO)
47 * A magic value to put into the feature control register of the
48 * "ohare" I/O controller on Starmaxes to enable the IDE CD interface.
49 * Contributed by Harry Eaton.
51 #define STARMAX_FEATURES 0xbeff7a
53 #endif /* __KERNEL__ */
54 #endif /* _ASM_POWERPC_OHARE_H */