ncr.c revision 1.16
1 /* $NetBSD: ncr.c,v 1.16 1998/12/06 13:55:09 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 75 #include "ioconf.h" 76 77 #define MIN_DMA_LEN 128 78 79 #ifdef notyet 80 struct si_dma_handle { 81 int dh_flags; 82 #define SIDH_BUSY 1 83 #define SIDH_OUT 2 84 u_char *dh_addr; 85 }; 86 #endif 87 88 struct si_softc { 89 struct ncr5380_softc ncr_sc; 90 }; 91 92 /* This is copied from julian's bt driver */ 93 /* "so we have a default dev struct for our link struct." */ 94 static struct scsipi_device si_dev = { 95 NULL, /* Use default error handler. */ 96 NULL, /* Use default start handler. */ 97 NULL, /* Use default async handler. */ 98 NULL, /* Use default "done" routine. */ 99 }; 100 101 static int si_match(struct device *, struct cfdata *, void *); 102 static void si_attach(struct device *, struct device *, void *); 103 static void si_minphys(struct buf *); 104 static void si_intr(int); 105 void dk_establish(void); 106 107 struct cfattach ncr_ca = { 108 sizeof(struct si_softc), si_match, si_attach 109 }; 110 111 void 112 dk_establish(void) 113 { 114 #if 0 115 printf("faking dk_establish()...\n"); 116 #endif 117 } 118 119 static int 120 si_match(parent, cf, aux) 121 struct device *parent; 122 struct cfdata *cf; 123 void *aux; 124 { 125 struct vsbus_attach_args *va = aux; 126 127 if (va->va_type == 0x200C0080) 128 return 1; 129 return 0; 130 } 131 132 static void 133 si_attach(parent, self, args) 134 struct device *parent, *self; 135 void *args; 136 { 137 struct si_softc *sc = (struct si_softc *) self; 138 struct ncr5380_softc *ncr_sc = &sc->ncr_sc; 139 #ifdef notyet 140 struct confargs *ca = args; 141 #endif 142 143 printf("\n"); 144 /* 145 * MD function pointers used by the MI code. 146 */ 147 ncr_sc->sc_pio_out = ncr5380_pio_out; 148 ncr_sc->sc_pio_in = ncr5380_pio_in; 149 150 #ifdef notyet 151 ncr_sc->sc_dma_alloc = si_dma_alloc; 152 ncr_sc->sc_dma_free = si_dma_free; 153 ncr_sc->sc_dma_setup = si_dma_setup; 154 ncr_sc->sc_dma_start = si_dma_start; 155 ncr_sc->sc_dma_poll = si_dma_poll; 156 ncr_sc->sc_dma_eop = si_dma_eop; 157 ncr_sc->sc_dma_stop = si_dma_stop; 158 #endif 159 ncr_sc->sc_intr_on = NULL /*si_intr_on*/; 160 ncr_sc->sc_intr_off = NULL /*si_intr_off*/; 161 162 ncr_sc->sc_dma_alloc = NULL; 163 ncr_sc->sc_min_dma_len = MIN_DMA_LEN; 164 165 /* 166 * Fill in the adapter. 167 */ 168 ncr_sc->sc_adapter.scsipi_cmd = ncr5380_scsi_cmd; 169 ncr_sc->sc_adapter.scsipi_minphys = si_minphys; 170 171 /* 172 * Fill in the prototype scsi_link. 173 */ 174 ncr_sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 175 ncr_sc->sc_link.adapter_softc = sc; 176 ncr_sc->sc_link.scsipi_scsi.adapter_target = 7; 177 ncr_sc->sc_link.adapter = &ncr_sc->sc_adapter; 178 ncr_sc->sc_link.device = &si_dev; 179 ncr_sc->sc_link.type = BUS_SCSI; 180 181 /* 182 * Initialize fields used by the MI code. 183 */ 184 ncr_sc->sci_r0 = sca_regs + 0x80; /* CUR_DATA/OUT_DATA (rw) */ 185 ncr_sc->sci_r1 = sca_regs + 0x84; /* INI_CMD (rw) */ 186 ncr_sc->sci_r2 = sca_regs + 0x88; /* MODE (rw) */ 187 ncr_sc->sci_r3 = sca_regs + 0x8c; /* TAR_CMD (rw) */ 188 ncr_sc->sci_r4 = sca_regs + 0x90; /* CUR_STAT/SEL_ENA (rw) */ 189 ncr_sc->sci_r5 = sca_regs + 0x94; /* STATUS/DMA_SEND (rw) */ 190 ncr_sc->sci_r6 = sca_regs + 0x98; /* IN_DATA/DMA_TRCV (rw) */ 191 ncr_sc->sci_r7 = sca_regs + 0x9c; /* RESET/DMA_IRCV (rw) */ 192 193 /* 194 * Initialize si board itself. 195 */ 196 ncr5380_init(ncr_sc); 197 ncr5380_reset_scsibus(ncr_sc); 198 199 vsbus_intr_attach(1, si_intr, 0); /* 0 is arg for si_intr */ 200 vsbus_intr_enable(1); 201 202 config_found(&(ncr_sc->sc_dev), &(ncr_sc->sc_link), scsiprint); 203 } 204 205 static void 206 si_minphys(struct buf *bp) 207 { 208 #if 0 209 printf("minphys: blkno=%d, bcount=%d, data=0x%x, flags=%x\n", 210 bp->b_blkno, (int) bp->b_bcount, 211 (unsigned) bp->b_data, (unsigned) bp->b_flags); 212 #endif 213 } 214 215 static void 216 si_intr(int arg) 217 { 218 #if 0 219 printf("si_intr: arg=%d\n", arg); 220 #endif 221 ncr5380_intr(ncr_cd.cd_devs[arg]); 222 } 223 224
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