/* * include/asm-ppc/hydra.h -- Mac I/O `Hydra' definitions * * Copyright (C) 1997 Geert Uytterhoeven * * This file is based on the following documentation: * * Macintosh Technology in the Common Hardware Reference Platform * Apple Computer, Inc. * * © Copyright 1995 Apple Computer, Inc. All rights reserved. * * It's available online from https://www.cpu.lu/~mlan/ftp/MacTech.pdf * You can obtain paper copies of this book from computer bookstores or by * writing Morgan Kaufmann Publishers, Inc., 340 Pine Street, Sixth Floor, San * Francisco, CA 94104. Reference ISBN 1-55860-393-X. * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive * for more details. */ #ifndef _ASMPPC_HYDRA_H #define _ASMPPC_HYDRA_H #ifdef __KERNEL__ struct Hydra { /* DBDMA Controller Register Space */ char Pad1[0x30]; u_int CachePD; u_int IDs; u_int Feature_Control; char Pad2[0x7fc4]; /* DBDMA Channel Register Space */ char SCSI_DMA[0x100]; char Pad3[0x300]; char SCCA_Tx_DMA[0x100]; char SCCA_Rx_DMA[0x100]; char SCCB_Tx_DMA[0x100]; char SCCB_Rx_DMA[0x100]; char Pad4[0x7800]; /* Device Register Space */ char SCSI[0x1000]; char ADB[0x1000]; char SCC_Legacy[0x1000]; char SCC[0x1000]; char Pad9[0x2000]; char VIA[0x2000]; char Pad10[0x28000]; char OpenPIC[0x40000]; }; extern volatile struct Hydra __iomem *Hydra; /* * Feature Control Register */ #define HYDRA_FC_SCC_CELL_EN 0x00000001 /* Enable SCC Clock */ #define HYDRA_FC_SCSI_CELL_EN 0x00000002 /* Enable SCSI Clock */ #define HYDRA_FC_SCCA_ENABLE 0x00000004 /* Enable SCC A Lines */ #define HYDRA_FC_SCCB_ENABLE 0x00000008 /* Enable SCC B Lines */ #define HYDRA_FC_ARB_BYPASS 0x00000010 /* Bypass Internal Arbiter */ #define HYDRA_FC_RESET_SCC 0x00000020 /* Reset SCC */ #define HYDRA_FC_MPIC_ENABLE 0x00000040 /* Enable OpenPIC */ #define HYDRA_FC_SLOW_SCC_PCLK 0x00000080 /* 1=15.6672, 0=25 MHz */ #define HYDRA_FC_MPIC_IS_MASTER 0x00000100 /* OpenPIC Master Mode */ /* * OpenPIC Interrupt Sources */ #define HYDRA_INT_SIO 0 #define HYDRA_INT_SCSI_DMA 1 #define HYDRA_INT_SCCA_TX_DMA 2 #define HYDRA_INT_SCCA_RX_DMA 3 #define HYDRA_INT_SCCB_TX_DMA 4 #define HYDRA_INT_SCCB_RX_DMA 5 #define HYDRA_INT_SCSI 6 #define HYDRA_INT_SCCA 7 #define HYDRA_INT_SCCB 8 #define HYDRA_INT_VIA 9 #define HYDRA_INT_ADB 10 #define HYDRA_INT_ADB_NMI 11 #define HYDRA_INT_EXT1 12 /* PCI IRQW */ #define HYDRA_INT_EXT2 13 /* PCI IRQX */ #define HYDRA_INT_EXT3 14 /* PCI IRQY */ #define HYDRA_INT_EXT4 15 /* PCI IRQZ */ #define HYDRA_INT_EXT5 16 /* IDE Primary/Secondary */ #define HYDRA_INT_EXT6 17 /* IDE Secondary */ #define HYDRA_INT_EXT7 18 /* Power Off Request */ #define HYDRA_INT_SPARE 19 #endif /* __KERNEL__ */ #endif /* _ASMPPC_HYDRA_H */