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/*
* 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 */
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