1 #ifndef _ASM_POWERPC_OHARE_H 2 #define _ASM_POWERPC_OHARE_H 3 #ifdef __KERNEL__ 4 /* 5 * ohare.h: definitions for using the "O'Hare" I/O controller chip. 6 * 7 * Copyright (C) 1997 Paul Mackerras. 8 * 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). 11 */ 12 13 /* offset from ohare base for feature control register */ 14 #define OHARE_MBCR 0x34 15 #define OHARE_FCR 0x38 16 17 /* 18 * Bits in feature control register. 19 * These were mostly derived by experiment on a powerbook 3400 20 * and may differ for other machines. 21 */ 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 39 40 /* 41 * Bits to set in the feature control register on PowerBooks. 42 */ 43 #define PBOOK_FEATURES (OH_IDE_ENABLE | OH_SCC_ENABLE | \ 44 OH_MESH_ENABLE | OH_SCCA_IO | OH_SCCB_IO) 45 46 /* 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. 50 */ 51 #define STARMAX_FEATURES 0xbeff7a 52 53 #endif /* __KERNEL__ */ 54 #endif /* _ASM_POWERPC_OHARE_H */ 55