ncr.c revision 1.22
1 /* $NetBSD: ncr.c,v 1.22 1999/09/21 18:07:54 ragge Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Adam Glass, David Jones, Gordon W. Ross, and Jens A. Nilsson. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * This file contains the machine-dependent parts of the NCR-5380 41 * controller. The machine-independent parts are in ncr5380sbc.c. 42 * 43 * Note: Only PIO transfers for now which implicates very bad 44 * performance. DMA support will come soon. 45 * 46 * Jens A. Nilsson. 47 * 48 * Credits: 49 * 50 * This code is based on arch/sun3/dev/si* 51 * Written by David Jones, Gordon Ross, and Adam Glass. 52 */ 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/errno.h> 57 #include <sys/kernel.h> 58 #include <sys/malloc.h> 59 #include <sys/device.h> 60 #include <sys/buf.h> 61 #include <sys/proc.h> 62 #include <sys/user.h> 63 64 #include <dev/scsipi/scsi_all.h> 65 #include <dev/scsipi/scsipi_all.h> 66 #include <dev/scsipi/scsipi_debug.h> 67 #include <dev/scsipi/scsiconf.h> 68 69 #include <dev/ic/ncr5380reg.h> 70 #include <dev/ic/ncr5380var.h> 71 72 #include <machine/vsbus.h> 73 #include <machine/bus.h> 74 #include <machine/sid.h> 75 76 #include "ioconf.h" 77 78 #define MIN_DMA_LEN 128 79 80 #ifdef notyet 81 struct si_dma_handle { 82 int dh_flags; 83 #define SIDH_BUSY 1 84 #define SIDH_OUT 2 85 u_char *dh_addr; 86 }; 87 #endif 88 89 struct si_softc { 90 struct ncr5380_softc ncr_sc; 91 }; 92 93 /* This is copied from julian's bt driver */ 94 /* "so we have a default dev struct for our link struct." */ 95 static struct scsipi_device si_dev = { 96 NULL, /* Use default error handler. */ 97 NULL, /* Use default start handler. */ 98 NULL, /* Use default async handler. */ 99 NULL, /* Use default "done" routine. */ 100 }; 101 102 static int si_match(struct device *, struct cfdata *, void *); 103 static void si_attach(struct device *, struct device *, void *); 104 static void si_minphys(struct buf *); 105 static void si_intr(int); 106 void dk_establish(void); 107 108 struct cfattach ncr_ca = { 109 sizeof(struct si_softc), si_match, si_attach 110 }; 111 112 void 113 dk_establish(void) 114 { 115 #if 0 116 printf("faking dk_establish()...\n"); 117 #endif 118 } 119 120 static int 121 si_match(parent, cf, aux) 122 struct device *parent; 123 struct cfdata *cf; 124 void *aux; 125 { 126 struct vsbus_attach_args *va = aux; 127 volatile char *si_csr = (char *) va->va_addr; 128 129 if (vax_boardtype == VAX_BTYP_49) 130 return 0; 131 /* This is the way Linux autoprobes the interrupt MK-990321 */ 132 si_csr[12] = 0; 133 si_csr[16] = 0x80; 134 si_csr[0] = 0x80; 135 si_csr[4] = 5; /* 0xcf */ 136 DELAY(100000); 137 va->va_ivec = si_intr; 138 return 1; 139 } 140 141 static void 142 si_attach(parent, self, aux) 143 struct device *parent, *self; 144 void *aux; 145 { 146 struct vsbus_attach_args *va = aux; 147 struct si_softc *sc = (struct si_softc *) self; 148 struct ncr5380_softc *ncr_sc = &sc->ncr_sc; 149 150 printf("\n"); 151 /* 152 * MD function pointers used by the MI code. 153 */ 154 ncr_sc->sc_pio_out = ncr5380_pio_out; 155 ncr_sc->sc_pio_in = ncr5380_pio_in; 156 157 #ifdef notyet 158 ncr_sc->sc_dma_alloc = si_dma_alloc; 159 ncr_sc->sc_dma_free = si_dma_free; 160 ncr_sc->sc_dma_setup = si_dma_setup; 161 ncr_sc->sc_dma_start = si_dma_start; 162 ncr_sc->sc_dma_poll = si_dma_poll; 163 ncr_sc->sc_dma_eop = si_dma_eop; 164 ncr_sc->sc_dma_stop = si_dma_stop; 165 #endif 166 ncr_sc->sc_intr_on = NULL /*si_intr_on*/; 167 ncr_sc->sc_intr_off = NULL /*si_intr_off*/; 168 169 ncr_sc->sc_dma_alloc = NULL; 170 ncr_sc->sc_min_dma_len = MIN_DMA_LEN; 171 172 /* 173 * Fill in the adapter. 174 */ 175 ncr_sc->sc_adapter.scsipi_cmd = ncr5380_scsi_cmd; 176 ncr_sc->sc_adapter.scsipi_minphys = si_minphys; 177 178 /* 179 * Fill in the prototype scsi_link. 180 */ 181 ncr_sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 182 ncr_sc->sc_link.adapter_softc = sc; 183 ncr_sc->sc_link.scsipi_scsi.adapter_target = 7; 184 ncr_sc->sc_link.adapter = &ncr_sc->sc_adapter; 185 ncr_sc->sc_link.device = &si_dev; 186 ncr_sc->sc_link.type = BUS_SCSI; 187 188 /* 189 * Initialize fields used by the MI code. 190 */ 191 /* ncr_sc->sc_regt = Unused on VAX */ 192 ncr_sc->sc_regh = vax_map_physmem(va->va_paddr, 1); 193 194 /* Register offsets */ 195 ncr_sc->sci_r0 = 0; 196 ncr_sc->sci_r1 = 4; 197 ncr_sc->sci_r2 = 8; 198 ncr_sc->sci_r3 = 12; 199 ncr_sc->sci_r4 = 16; 200 ncr_sc->sci_r5 = 20; 201 ncr_sc->sci_r6 = 24; 202 ncr_sc->sci_r7 = 28; 203 204 ncr_sc->sc_no_disconnect = 0xff; 205 /* 206 * Initialize si board itself. 207 */ 208 ncr5380_init(ncr_sc); 209 ncr5380_reset_scsibus(ncr_sc); 210 211 config_found(&(ncr_sc->sc_dev), &(ncr_sc->sc_link), scsiprint); 212 } 213 214 /* 215 * Adjust the max transfer size. The DMA buffer is only 16k on VS2000. 216 */ 217 static void 218 si_minphys(struct buf *bp) 219 { 220 if ((vax_boardtype == VAX_BTYP_410) && (bp->b_bcount > (16*1024))) 221 bp->b_bcount = (16*1024); 222 else if (bp->b_bcount > MAXPHYS) 223 bp->b_bcount = MAXPHYS; 224 } 225 226 static void 227 si_intr(int arg) 228 { 229 ncr5380_intr(ncr_cd.cd_devs[arg]); 230 } 231
Indexes created Tue Sep 30 20:09:53 GMT 2025