1 /* $NetBSD: mbavar.h,v 1.8 2002/07/22 21:48:37 hannken Exp $ */ 2 /* 3 * Copyright (c) 1994 Ludd, University of Lule}, Sweden 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed at Ludd, University of Lule}. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/device.h> 33 #include <machine/scb.h> 34 35 #define MBCR_INIT 1 36 #define MBCR_IE (1<<2) 37 #define MBDS_DPR (1<<8) 38 #define MBSR_NED (1<<18) 39 #define MBDT_MOH (1<<13) 40 #define MBDT_TYPE 511 41 #define MBDT_TAP (1<<14) 42 43 #define CLOSED 0 44 #define WANTOPEN 1 45 #define RDLABEL 2 46 #define OPEN 3 47 #define OPENRAW 4 48 49 #define MAXMBADEV 8 /* Max units per MBA */ 50 51 /* 52 * Devices that have different device drivers. 53 */ 54 enum mb_devices { 55 MB_RP, /* RM/RP disk */ 56 MB_TU, /* TM03 based tape, ex. TU45 or TU77 */ 57 MB_MT /* TU78 tape */ 58 }; 59 60 /* 61 * Current state of the adapter. 62 */ 63 enum sc_state { 64 SC_AUTOCONF, 65 SC_ACTIVE, 66 SC_IDLE 67 }; 68 69 /* 70 * Return value after a finished data transfer, from device driver. 71 */ 72 enum xfer_action { 73 XFER_RESTART, 74 XFER_FINISH 75 }; 76 77 /* 78 * Info passed do unit device driver during autoconfig. 79 */ 80 struct mba_attach_args { 81 int ma_unit; 82 int ma_type; 83 char *ma_name; 84 enum mb_devices ma_devtyp; 85 bus_space_tag_t ma_iot; 86 bus_space_handle_t ma_ioh; 87 }; 88 89 /* 90 * Common struct used to communicate between the mba device driver 91 * and the unit device driver. 92 */ 93 struct mba_device { 94 struct mba_device *md_back; /* linked list of runnable devices */ 95 /* Start routine to be called by mbastart. */ 96 void (*md_start)(struct mba_device *); 97 /* Routine to be called after attn intr */ 98 int (*md_attn)(struct mba_device *); 99 /* Call after xfer finish */ 100 enum xfer_action (*md_finish)(struct mba_device *, int, int *); 101 void *md_softc; /* Backpointer to this units softc. */ 102 struct mba_softc *md_mba; 103 struct bufq_state md_q; /* queue of I/O requests */ 104 }; 105 106 struct mba_softc { 107 struct device sc_dev; 108 bus_space_tag_t sc_iot; 109 bus_space_handle_t sc_ioh; 110 struct evcnt sc_intrcnt; 111 struct mba_device *sc_first, *sc_last; 112 enum sc_state sc_state; 113 struct mba_device *sc_md[MAXMBADEV]; 114 }; 115 116 struct mbaunit { 117 int nr; 118 char *name; 119 enum mb_devices devtyp; 120 }; 121 122 /* Common prototypes */ 123 void mbaqueue(struct mba_device *); 124 125