1 /* $NetBSD: ahscreg.h,v 1.4 2005/12/11 12:16:28 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)dmareg.h 32 */ 33 /* 34 * Copyright (c) 1994 Christian E. Hopps 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the University of 47 * California, Berkeley and its contributors. 48 * 4. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)dmareg.h 65 */ 66 #ifndef _AMIGA_DEV_AHSCREG_H_ 67 #define _AMIGA_DEV_AHSCREG_H_ 68 69 /* 70 * Hardware layout of the A3000 SDMAC. This also contains the 71 * registers for the sbic chip, but in favor of separating DMA and 72 * scsi, the scsi-driver doesn't make use of this dependency 73 */ 74 75 #define v_char volatile char 76 #define v_int volatile int 77 #define vu_char volatile u_char 78 #define vu_short volatile u_short 79 #define vu_int volatile u_int 80 81 struct sdmac { 82 short pad0; 83 vu_short DAWR; /* DACK Width Register WO */ 84 vu_int WTC; /* Word Transfer Count Register RW */ 85 short pad1; 86 vu_short CNTR; /* Control Register RW */ 87 vu_int ACR; /* Address Count Register RW */ 88 short pad2; 89 vu_short ST_DMA; /* Start DMA Transfers RW-Strobe */ 90 short pad3; 91 vu_short FLUSH; /* Flush FIFO RW-Strobe */ 92 short pad4; 93 vu_short CINT; /* Clear Interrupts RW-Strobe */ 94 short pad5; 95 vu_short ISTR; /* Interrupt Status Register RO */ 96 int pad6[7]; 97 short pad7; 98 vu_short SP_DMA; /* Stop DMA Transfers RW-Strobe */ 99 char pad8; 100 vu_char SASR; /* sbic asr */ 101 char pad9; 102 vu_char SCMD; /* sbic data */ 103 }; 104 105 /* 106 * value to go into DAWR 107 */ 108 #define DAWR_AHSC 3 /* according to A3000T service-manual */ 109 110 /* 111 * bits defined for CNTR 112 */ 113 #define CNTR_TCEN (1<<5) /* Terminal Count Enable */ 114 #define CNTR_PREST (1<<4) /* Perp Reset (not implemented :-((( ) */ 115 #define CNTR_PDMD (1<<3) /* Perp Device Mode Select (1=SCSI,0=XT/AT) */ 116 #define CNTR_INTEN (1<<2) /* Interrupt Enable */ 117 #define CNTR_DDIR (1<<1) /* Device Direction. 1==rd host, wr perp */ 118 #define CNTR_IO_DX (1<<0) /* IORDY & CSX1 Polarity Select */ 119 120 /* 121 * bits defined for ISTR 122 */ 123 #define ISTR_INTX (1<<8) /* XT/AT Interrupt pending */ 124 #define ISTR_INT_F (1<<7) /* Interrupt Follow */ 125 #define ISTR_INTS (1<<6) /* SCSI Peripheral Interrupt */ 126 #define ISTR_E_INT (1<<5) /* End-Of-Process Interrupt */ 127 #define ISTR_INT_P (1<<4) /* Interrupt Pending */ 128 #define ISTR_UE_INT (1<<3) /* Under-Run FIFO Error Interrupt */ 129 #define ISTR_OE_INT (1<<2) /* Over-Run FIFO Error Interrupt */ 130 #define ISTR_FF_FLG (1<<1) /* FIFO-Full Flag */ 131 #define ISTR_FE_FLG (1<<0) /* FIFO-Empty Flag */ 132 133 #endif /* _AMIGA_DEV_AHSCREG_H_ */ 134