projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 88ced031 AB |
2 | #ifndef _ASM_POWERPC_OHARE_H |
| 3 | #define _ASM_POWERPC_OHARE_H | |
| 42650d8c | 4 | #ifdef __KERNEL__ |
| 1da177e4 LT |
5 | /* |
| 6 | * ohare.h: definitions for using the "O'Hare" I/O controller chip. | |
| 7 | * | |
| 8 | * Copyright (C) 1997 Paul Mackerras. | |
| 9 | * | |
| 10 | * BenH: Changed to match those of heathrow (but not all of them). Please | |
| 11 | * check if I didn't break anything (especially the media bay). | |
| 12 | */ | |
| 13 | ||
| 14 | /* offset from ohare base for feature control register */ | |
| 15 | #define OHARE_MBCR 0x34 | |
| 16 | #define OHARE_FCR 0x38 | |
| 17 | ||
| 18 | /* | |
| 19 | * Bits in feature control register. | |
| 20 | * These were mostly derived by experiment on a powerbook 3400 | |
| 21 | * and may differ for other machines. | |
| 22 | */ | |
| 23 | #define OH_SCC_RESET 1 | |
| 24 | #define OH_BAY_POWER_N 2 /* a guess */ | |
| 25 | #define OH_BAY_PCI_ENABLE 4 /* a guess */ | |
| 26 | #define OH_BAY_IDE_ENABLE 8 | |
| 27 | #define OH_BAY_FLOPPY_ENABLE 0x10 | |
| 28 | #define OH_IDE0_ENABLE 0x20 | |
| 29 | #define OH_IDE0_RESET_N 0x40 /* a guess */ | |
| 30 | #define OH_BAY_DEV_MASK 0x1c | |
| 31 | #define OH_BAY_RESET_N 0x80 | |
| 32 | #define OH_IOBUS_ENABLE 0x100 /* IOBUS seems to be IDE */ | |
| 33 | #define OH_SCC_ENABLE 0x200 | |
| 34 | #define OH_MESH_ENABLE 0x400 | |
| 35 | #define OH_FLOPPY_ENABLE 0x800 | |
| 36 | #define OH_SCCA_IO 0x4000 | |
| 37 | #define OH_SCCB_IO 0x8000 | |
| 38 | #define OH_VIA_ENABLE 0x10000 /* Is apparently wrong, to be verified */ | |
| 39 | #define OH_IDE1_RESET_N 0x800000 | |
| 40 | ||
| 41 | /* | |
| 42 | * Bits to set in the feature control register on PowerBooks. | |
| 43 | */ | |
| 44 | #define PBOOK_FEATURES (OH_IDE_ENABLE | OH_SCC_ENABLE | \ | |
| 45 | OH_MESH_ENABLE | OH_SCCA_IO | OH_SCCB_IO) | |
| 46 | ||
| 47 | /* | |
| 48 | * A magic value to put into the feature control register of the | |
| 49 | * "ohare" I/O controller on Starmaxes to enable the IDE CD interface. | |
| 50 | * Contributed by Harry Eaton. | |
| 51 | */ | |
| 52 | #define STARMAX_FEATURES 0xbeff7a | |
| 88ced031 AB |
53 | |
| 54 | #endif /* __KERNEL__ */ | |
| 55 | #endif /* _ASM_POWERPC_OHARE_H */ |