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/* $FreeBSD: release/9.1.0/sys/sparc64/ebus/ebusreg.h 219567 2011-03-12 14:33:32Z marius $ */ /* $OpenBSD: ebusreg.h,v 1.4 2001/10/01 18:08:04 jason Exp $ */ /* $NetBSD: ebusreg.h,v 1.8 2008/05/29 14:51:27 mrg Exp $ */ /*- * Copyright (c) 1999 Matthew R. Green * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ /* * UltraSPARC `ebus' * * The `ebus' bus is designed to plug traditional PC-ISA devices into * an SPARC system with as few costs as possible, without sacrificing * to performance. Typically, it is implemented in the PCIO IC from * SME, which also implements a `hme-compatible' PCI network device * (`network'). The ebus has 4 DMA channels, similar to the DMA seen * in the ESP SCSI DMA. * * Typical UltraSPARC systems have a NatSemi SuperIO IC to provide * serial ports for the keyboard and mouse (`se'), floppy disk * controller (`fdthree'), parallel port controller (`bpp') connected * to the ebus, and a PCI-IDE controller (connected directly to the * PCI bus, of course), as well as a Siemens Nixdorf SAB82532 dual * channel serial controller (`su' providing ttya and ttyb), an MK48T59 * EEPROM/clock controller (also where the idprom, including the * ethernet address, is located), the audio system (`SUNW,CS4231', same * as other UltraSPARC and some SPARC systems), and other various * internal devices found on traditional SPARC systems such as the * `power', `flashprom', etc., devices. * * The ebus uses an interrupt mapping scheme similar to PCI, though * the actual structures are different. */ /* EBUS dma registers */ #define EBDMA_DCSR 0x0 /* control/status */ #define EBDMA_DADDR 0x4 /* DMA address */ #define EBDMA_DCNT 0x8 /* DMA count */ /* EBUS DMA control/status (EBDMA_DCSR) */ #define EBDCSR_INT 0x00000001 /* interrupt pending */ #define EBDCSR_ERR 0x00000002 /* error pending */ #define EBDCSR_DRAIN 0x00000004 /* drain */ #define EBDCSR_INTEN 0x00000010 /* interrupt enable */ #define EBDCSR_RESET 0x00000080 /* reset */ #define EBDCSR_WRITE 0x00000100 /* write */ #define EBDCSR_DMAEN 0x00000200 /* dma enable */ #define EBDCSR_CYC 0x00000400 /* cyc pending */ #define EBDCSR_DIAGRD 0x00000800 /* diagnostic read done */ #define EBDCSR_DIAGWR 0x00001000 /* diagnostic write done */ #define EBDCSR_CNTEN 0x00002000 /* count enable */ #define EBDCSR_TC 0x00004000 /* terminal count */ #define EBDCSR_CSRDRNDIS 0x00010000 /* disable csr drain */ #define EBDCSR_BURSTMASK 0x000c0000 /* burst size mask */ #define EBDCSR_BURST_1 0x00080000 /* burst 1 */ #define EBDCSR_BURST_4 0x00000000 /* burst 4 */ #define EBDCSR_BURST_8 0x00040000 /* burst 8 */ #define EBDCSR_BURST_16 0x000c0000 /* burst 16 */ #define EBDCSR_DIAGEN 0x00100000 /* enable diagnostics */ #define EBDCSR_ERRDIS 0x00400000 /* disable error pending */ #define EBDCSR_TCIDIS 0x00800000 /* disable TCI */ #define EBDCSR_NEXTEN 0x01000000 /* enable next */ #define EBDCSR_DMAON 0x02000000 /* dma on */ #define EBDCSR_A_LOADED 0x04000000 /* address loaded */ #define EBDCSR_NA_LOADED 0x08000000 /* next address loaded */ #define EBDCSR_DEVMASK 0xf0000000 /* device id mask */