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