ncr.c revision 1.19
1 /* $NetBSD: ncr.c,v 1.19 1999/03/26 22:04:07 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 caddr_t sca_regs; 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 /* This is the way Linux autoprobes the interrupt MK-990321 */ 130 si_csr[12] = 0; 131 si_csr[16] = 0x80; 132 si_csr[0] = 0x80; 133 si_csr[4] = 5; /* 0xcf */ 134 DELAY(100000); 135 va->va_ivec = si_intr; 136 return 1; 137 } 138 139 static void 140 si_attach(parent, self, aux) 141 struct device *parent, *self; 142 void *aux; 143 { 144 struct vsbus_attach_args *va = aux; 145 struct si_softc *sc = (struct si_softc *) self; 146 struct ncr5380_softc *ncr_sc = &sc->ncr_sc; 147 148 printf("\n"); 149 sc->sca_regs = (caddr_t)vax_map_physmem(va->va_paddr, 1); 150 /* 151 * MD function pointers used by the MI code. 152 */ 153 ncr_sc->sc_pio_out = ncr5380_pio_out; 154 ncr_sc->sc_pio_in = ncr5380_pio_in; 155 156 #ifdef notyet 157 ncr_sc->sc_dma_alloc = si_dma_alloc; 158 ncr_sc->sc_dma_free = si_dma_free; 159 ncr_sc->sc_dma_setup = si_dma_setup; 160 ncr_sc->sc_dma_start = si_dma_start; 161 ncr_sc->sc_dma_poll = si_dma_poll; 162 ncr_sc->sc_dma_eop = si_dma_eop; 163 ncr_sc->sc_dma_stop = si_dma_stop; 164 #endif 165 ncr_sc->sc_intr_on = NULL /*si_intr_on*/; 166 ncr_sc->sc_intr_off = NULL /*si_intr_off*/; 167 168 ncr_sc->sc_dma_alloc = NULL; 169 ncr_sc->sc_min_dma_len = MIN_DMA_LEN; 170 171 /* 172 * Fill in the adapter. 173 */ 174 ncr_sc->sc_adapter.scsipi_cmd = ncr5380_scsi_cmd; 175 ncr_sc->sc_adapter.scsipi_minphys = si_minphys; 176 177 /* 178 * Fill in the prototype scsi_link. 179 */ 180 ncr_sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 181 ncr_sc->sc_link.adapter_softc = sc; 182 ncr_sc->sc_link.scsipi_scsi.adapter_target = 7; 183 ncr_sc->sc_link.adapter = &ncr_sc->sc_adapter; 184 ncr_sc->sc_link.device = &si_dev; 185 ncr_sc->sc_link.type = BUS_SCSI; 186 187 /* 188 * Initialize fields used by the MI code. 189 */ 190 ncr_sc->sci_r0 = sc->sca_regs; /* CUR_DATA/OUT_DATA (rw) */ 191 ncr_sc->sci_r1 = sc->sca_regs + 4; /* INI_CMD (rw) */ 192 ncr_sc->sci_r2 = sc->sca_regs + 8; /* MODE (rw) */ 193 ncr_sc->sci_r3 = sc->sca_regs + 12; /* TAR_CMD (rw) */ 194 ncr_sc->sci_r4 = sc->sca_regs + 16; /* CUR_STAT/SEL_ENA (rw) */ 195 ncr_sc->sci_r5 = sc->sca_regs + 20; /* STATUS/DMA_SEND (rw) */ 196 ncr_sc->sci_r6 = sc->sca_regs + 24; /* IN_DATA/DMA_TRCV (rw) */ 197 ncr_sc->sci_r7 = sc->sca_regs + 28; /* RESET/DMA_IRCV (rw) */ 198 199 /* 200 * Initialize si board itself. 201 */ 202 ncr5380_init(ncr_sc); 203 ncr5380_reset_scsibus(ncr_sc); 204 205 config_found(&(ncr_sc->sc_dev), &(ncr_sc->sc_link), scsiprint); 206 } 207 208 static void 209 si_minphys(struct buf *bp) 210 { 211 #if 0 212 printf("minphys: blkno=%d, bcount=%d, data=0x%x, flags=%x\n", 213 bp->b_blkno, (int) bp->b_bcount, 214 (unsigned) bp->b_data, (unsigned) bp->b_flags); 215 #endif 216 } 217 218 static void 219 si_intr(int arg) 220 { 221 ncr5380_intr(ncr_cd.cd_devs[arg]); 222 } 223 224
Indexes created Tue Sep 30 20:09:53 GMT 2025