1 /* $NetBSD: mbavar.h,v 1.14 2017/05/22 17:13:09 ragge 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 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include <sys/device.h> 28 #include <machine/scb.h> 29 30 #define MBCR_INIT 1 31 #define MBCR_IE (1<<2) 32 #define MBDS_DPR (1<<8) 33 #define MBSR_NED (1<<18) 34 #define MBDT_MOH (1<<13) 35 #define MBDT_TYPE 511 36 #define MBDT_TAP (1<<14) 37 38 #define CLOSED 0 39 #define WANTOPEN 1 40 #define RDLABEL 2 41 #define OPEN 3 42 #define OPENRAW 4 43 44 #define MAXMBADEV 8 /* Max units per MBA */ 45 46 /* 47 * Devices that have different device drivers. 48 */ 49 enum mb_devices { 50 MB_UK, /* unknown */ 51 MB_RP, /* RM/RP disk */ 52 MB_TU, /* TM03 based tape, ex. TU45 or TU77 */ 53 MB_MT /* TU78 tape */ 54 }; 55 56 /* 57 * Current state of the adapter. 58 */ 59 enum sc_state { 60 SC_AUTOCONF, 61 SC_ACTIVE, 62 SC_IDLE 63 }; 64 65 /* 66 * Return value after a finished data transfer, from device driver. 67 */ 68 enum xfer_action { 69 XFER_RESTART, 70 XFER_FINISH 71 }; 72 73 /* 74 * Info passed do unit device driver during autoconfig. 75 */ 76 struct mba_attach_args { 77 int ma_unit; 78 int ma_type; 79 const char *ma_name; 80 enum mb_devices ma_devtyp; 81 bus_space_tag_t ma_iot; 82 bus_space_handle_t ma_ioh; 83 }; 84 85 /* 86 * Common struct used to communicate between the mba device driver 87 * and the unit device driver. 88 */ 89 struct mba_device { 90 STAILQ_ENTRY(mba_device) md_link; /* linked list of runnable devices */ 91 void (*md_start)(struct mba_device *); 92 /* Start routine to be called by mbastart. */ 93 int (*md_attn)(struct mba_device *); 94 /* Routine to be called after attn intr */ 95 enum xfer_action (*md_finish)(struct mba_device *, int, int *); 96 /* Call after xfer finish */ 97 void *md_softc; /* Backpointer to this units softc. */ 98 struct mba_softc *md_mba; 99 struct bufq_state *md_q; /* queue of I/O requests */ 100 }; 101 102 struct mba_softc { 103 device_t sc_dev; 104 bus_space_tag_t sc_iot; 105 bus_space_handle_t sc_ioh; 106 STAILQ_HEAD(,mba_device) sc_xfers; 107 struct evcnt sc_intrcnt; 108 enum sc_state sc_state; 109 struct mba_device *sc_md[MAXMBADEV]; 110 }; 111 112 struct mbaunit { 113 int nr; 114 const char *name; 115 enum mb_devices devtyp; 116 }; 117 118 /* Common prototypes */ 119 void mbaqueue(struct mba_device *); 120 121