otgsc.c revision 1.24
1 /* $NetBSD: otgsc.c,v 1.24 2001/04/25 17:53:08 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Michael L. Hitch 5 * Copyright (c) 1982, 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)csa12gdma.c 37 */ 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/device.h> 42 #include <dev/scsipi/scsi_all.h> 43 #include <dev/scsipi/scsipi_all.h> 44 #include <dev/scsipi/scsiconf.h> 45 #include <amiga/amiga/device.h> 46 #include <amiga/amiga/isr.h> 47 #include <amiga/dev/scireg.h> 48 #include <amiga/dev/scivar.h> 49 #include <amiga/dev/zbusvar.h> 50 51 void otgscattach __P((struct device *, struct device *, void *)); 52 int otgscmatch __P((struct device *, struct cfdata *, void *)); 53 54 int otgsc_dma_xfer_in __P((struct sci_softc *dev, int len, 55 register u_char *buf, int phase)); 56 int otgsc_dma_xfer_out __P((struct sci_softc *dev, int len, 57 register u_char *buf, int phase)); 58 int otgsc_intr __P((void *)); 59 60 61 #ifdef DEBUG 62 extern int sci_debug; 63 #define QPRINTF(a) if (sci_debug > 1) printf a 64 #else 65 #define QPRINTF(a) 66 #endif 67 68 extern int sci_data_wait; 69 70 struct cfattach otgsc_ca = { 71 sizeof(struct sci_softc), otgscmatch, otgscattach 72 }; 73 74 /* 75 * if we are my Hacker's SCSI board we are here. 76 */ 77 int 78 otgscmatch(pdp, cfp, auxp) 79 struct device *pdp; 80 struct cfdata *cfp; 81 void *auxp; 82 { 83 struct zbus_args *zap; 84 85 zap = auxp; 86 87 /* 88 * Check manufacturer and product id. 89 */ 90 if (zap->manid == 1058 && zap->prodid == 21) 91 return(1); 92 else 93 return(0); 94 } 95 96 void 97 otgscattach(pdp, dp, auxp) 98 struct device *pdp, *dp; 99 void *auxp; 100 { 101 volatile u_char *rp; 102 struct sci_softc *sc = (struct sci_softc *)dp; 103 struct zbus_args *zap; 104 struct scsipi_adapter *adapt = &sc->sc_adapter; 105 struct scsipi_channel *chan = &sc->sc_channel; 106 107 printf("\n"); 108 109 zap = auxp; 110 111 sc = (struct sci_softc *)dp; 112 rp = (u_char *)zap->va + 0x2000; 113 sc->sci_data = rp; 114 sc->sci_odata = rp; 115 sc->sci_icmd = rp + 0x10; 116 sc->sci_mode = rp + 0x20; 117 sc->sci_tcmd = rp + 0x30; 118 sc->sci_bus_csr = rp + 0x40; 119 sc->sci_sel_enb = rp + 0x40; 120 sc->sci_csr = rp + 0x50; 121 sc->sci_dma_send = rp + 0x50; 122 sc->sci_idata = rp + 0x60; 123 sc->sci_trecv = rp + 0x60; 124 sc->sci_iack = rp + 0x70; 125 sc->sci_irecv = rp + 0x70; 126 127 sc->dma_xfer_in = otgsc_dma_xfer_in; 128 sc->dma_xfer_out = otgsc_dma_xfer_out; 129 130 sc->sc_isr.isr_intr = otgsc_intr; 131 sc->sc_isr.isr_arg = sc; 132 sc->sc_isr.isr_ipl = 2; 133 add_isr(&sc->sc_isr); 134 135 scireset(sc); 136 137 /* 138 * Fill in the scsipi_adapter. 139 */ 140 memset(adapt, 0, sizeof(*adapt)); 141 adapt->adapt_dev = &sc->sc_dev; 142 adapt->adapt_nchannels = 1; 143 adapt->adapt_openings = 7; 144 adapt->adapt_max_periph = 1; 145 adapt->adapt_request = sci_scsipi_request; 146 adapt->adapt_minphys = sci_minphys; 147 148 /* 149 * Fill in the scsipi_channel. 150 */ 151 memset(chan, 0, sizeof(*chan)); 152 chan->chan_adapter = adapt; 153 chan->chan_bustype = &scsi_bustype; 154 chan->chan_channel = 0; 155 chan->chan_ntargets = 8; 156 chan->chan_nluns = 8; 157 chan->chan_id = 7; 158 159 /* 160 * attach all scsi units on us 161 */ 162 config_found(dp, chan, scsiprint); 163 } 164 165 int 166 otgsc_dma_xfer_in (dev, len, buf, phase) 167 struct sci_softc *dev; 168 int len; 169 register u_char *buf; 170 int phase; 171 { 172 int wait = sci_data_wait; 173 volatile register u_char *sci_dma = dev->sci_data + 0x100; 174 volatile register u_char *sci_csr = dev->sci_csr; 175 #ifdef DEBUG 176 u_char *obp = buf; 177 #endif 178 179 QPRINTF(("otgsc_dma_in %d, csr=%02x\n", len, *dev->sci_bus_csr)); 180 181 *dev->sci_tcmd = phase; 182 *dev->sci_mode |= SCI_MODE_DMA; 183 *dev->sci_icmd = 0; 184 *dev->sci_irecv = 0; 185 while (len > 0) { 186 wait = sci_data_wait; 187 while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) != 188 (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) { 189 if (!(*sci_csr & SCI_CSR_PHASE_MATCH) 190 || !(*dev->sci_bus_csr & SCI_BUS_BSY) 191 || --wait < 0) { 192 #ifdef DEBUG 193 if (sci_debug) 194 printf("otgsc_dma_in fail: l%d i%x w%d\n", 195 len, *dev->sci_bus_csr, wait); 196 #endif 197 *dev->sci_mode &= ~SCI_MODE_DMA; 198 return 0; 199 } 200 } 201 202 *buf++ = *sci_dma; 203 len--; 204 } 205 206 QPRINTF(("otgsc_dma_in {%d} %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", 207 len, obp[0], obp[1], obp[2], obp[3], obp[4], obp[5], 208 obp[6], obp[7], obp[8], obp[9])); 209 210 *dev->sci_mode &= ~SCI_MODE_DMA; 211 return 0; 212 } 213 214 int 215 otgsc_dma_xfer_out (dev, len, buf, phase) 216 struct sci_softc *dev; 217 int len; 218 register u_char *buf; 219 int phase; 220 { 221 int wait = sci_data_wait; 222 volatile register u_char *sci_dma = dev->sci_data + 0x100; 223 volatile register u_char *sci_csr = dev->sci_csr; 224 225 QPRINTF(("otgsc_dma_out %d, csr=%02x\n", len, *dev->sci_bus_csr)); 226 227 QPRINTF(("otgsc_dma_out {%d} %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", 228 len, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], 229 buf[6], buf[7], buf[8], buf[9])); 230 231 *dev->sci_tcmd = phase; 232 *dev->sci_mode |= SCI_MODE_DMA; 233 *dev->sci_icmd = SCI_ICMD_DATA; 234 *dev->sci_dma_send = 0; 235 while (len > 0) { 236 wait = sci_data_wait; 237 while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) != 238 (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) { 239 if (!(*sci_csr & SCI_CSR_PHASE_MATCH) 240 || !(*dev->sci_bus_csr & SCI_BUS_BSY) 241 || --wait < 0) { 242 #ifdef DEBUG 243 if (sci_debug) 244 printf("otgsc_dma_out fail: l%d i%x w%d\n", 245 len, *dev->sci_bus_csr, wait); 246 #endif 247 *dev->sci_mode &= ~SCI_MODE_DMA; 248 return 0; 249 } 250 } 251 252 *sci_dma = *buf++; 253 len--; 254 } 255 256 wait = sci_data_wait; 257 while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) == 258 SCI_CSR_PHASE_MATCH && --wait); 259 260 261 *dev->sci_mode &= ~SCI_MODE_DMA; 262 return 0; 263 } 264 265 int 266 otgsc_intr(arg) 267 void *arg; 268 { 269 struct sci_softc *dev = arg; 270 u_char stat; 271 272 if ((*dev->sci_csr & SCI_CSR_INT) == 0) 273 return (1); 274 stat = *dev->sci_iack; 275 *dev->sci_mode = 0; 276 return (1); 277 } 278
Indexes created Wed Sep 24 15:09:51 GMT 2025