otgsc.c revision 1.2
1 /* 2 * Copyright (c) 1994 Michael L. Hitch 3 * Copyright (c) 1982, 1990 The Regents of the University of California. 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 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)csa12gdma.c 35 * $Id: otgsc.c,v 1.2 1994/05/29 04:50:19 chopps Exp $ 36 */ 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/device.h> 41 #include <scsi/scsi_all.h> 42 #include <scsi/scsiconf.h> 43 #include <amiga/amiga/device.h> 44 #include <amiga/dev/scireg.h> 45 #include <amiga/dev/scivar.h> 46 #include <amiga/dev/ztwobusvar.h> 47 48 int otgscprint __P((void *auxp, char *)); 49 void otgscattach __P((struct device *, struct device *, void *)); 50 int otgscmatch __P((struct device *, struct cfdata *, void *)); 51 52 int otgsc_dma_xfer_in __P((struct sci_softc *dev, int len, 53 register u_char *buf, int phase)); 54 int otgsc_dma_xfer_out __P((struct sci_softc *dev, int len, 55 register u_char *buf, int phase)); 56 57 struct scsi_adapter otgsc_scsiswitch = { 58 sci_scsicmd, 59 sci_minphys, 60 0, /* no lun support */ 61 0, /* no lun support */ 62 sci_adinfo, 63 "otgsc", 64 }; 65 66 struct scsi_device otgsc_scsidev = { 67 NULL, /* use default error handler */ 68 NULL, /* do not have a start functio */ 69 NULL, /* have no async handler */ 70 NULL, /* Use default done routine */ 71 "otgsc", 72 0, 73 }; 74 75 #define QPRINTF 76 77 #ifdef DEBUG 78 extern int sci_debug; 79 #endif 80 81 extern int sci_data_wait; 82 83 struct cfdriver otgsccd = { 84 NULL, "otgsc", otgscmatch, otgscattach, 85 DV_DULL, sizeof(struct sci_softc), NULL, 0 }; 86 87 /* 88 * if we are my Hacker's SCSI board we are here. 89 */ 90 int 91 otgscmatch(pdp, cdp, auxp) 92 struct device *pdp; 93 struct cfdata *cdp; 94 void *auxp; 95 { 96 struct ztwobus_args *zap; 97 98 zap = auxp; 99 100 /* 101 * Check manufacturer and product id. 102 */ 103 if (zap->manid == 2011 && zap->prodid == 1) 104 return(1); 105 else 106 return(0); 107 } 108 109 void 110 otgscattach(pdp, dp, auxp) 111 struct device *pdp, *dp; 112 void *auxp; 113 { 114 volatile u_char *rp; 115 struct sci_softc *sc; 116 struct ztwobus_args *zap; 117 118 zap = auxp; 119 120 sc = (struct sci_softc *)dp; 121 rp = zap->va + 0x2000; 122 sc->sci_data = rp; 123 sc->sci_odata = rp; 124 sc->sci_icmd = rp + 0x10; 125 sc->sci_mode = rp + 0x20; 126 sc->sci_tcmd = rp + 0x30; 127 sc->sci_bus_csr = rp + 0x40; 128 sc->sci_sel_enb = rp + 0x40; 129 sc->sci_csr = rp + 0x50; 130 sc->sci_dma_send = rp + 0x50; 131 sc->sci_idata = rp + 0x60; 132 sc->sci_trecv = rp + 0x60; 133 sc->sci_iack = rp + 0x70; 134 sc->sci_irecv = rp + 0x70; 135 136 sc->dma_xfer_in = otgsc_dma_xfer_in; 137 sc->dma_xfer_out = otgsc_dma_xfer_out; 138 139 scireset(sc); 140 141 sc->sc_link.adapter_softc = sc; 142 sc->sc_link.adapter_targ = 7; 143 sc->sc_link.adapter = &otgsc_scsiswitch; 144 sc->sc_link.device = &otgsc_scsidev; 145 TAILQ_INIT(&sc->sc_xslist); 146 147 /* 148 * attach all scsi units on us 149 */ 150 config_found(dp, &sc->sc_link, otgscprint); 151 } 152 153 /* 154 * print diag if pnp is NULL else just extra 155 */ 156 int 157 otgscprint(auxp, pnp) 158 void *auxp; 159 char *pnp; 160 { 161 if (pnp == NULL) 162 return(UNCONF); 163 return(QUIET); 164 } 165 166 167 int 168 otgsc_dma_xfer_in (dev, len, buf, phase) 169 struct sci_softc *dev; 170 int len; 171 register u_char *buf; 172 int phase; 173 { 174 int wait = sci_data_wait; 175 u_char csr; 176 u_char *obp = buf; 177 volatile register u_char *sci_dma = dev->sci_data + 0x80; 178 volatile register u_char *sci_csr = dev->sci_csr; 179 volatile register u_char *sci_icmd = dev->sci_icmd; 180 181 QPRINTF(("otgsc_dma_in %d, csr=%02x\n", len, *dev->sci_bus_csr)); 182 183 *dev->sci_tcmd = phase; 184 *dev->sci_mode |= SCI_MODE_DMA; 185 *dev->sci_icmd = 0; 186 *dev->sci_irecv = 0; 187 while (len > 0) { 188 wait = sci_data_wait; 189 while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) != 190 (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) { 191 if (!(*sci_csr & SCI_CSR_PHASE_MATCH) 192 || !(*dev->sci_bus_csr & SCI_BUS_BSY) 193 || --wait < 0) { 194 #ifdef DEBUG 195 if (sci_debug) 196 printf("otgsc_dma_in fail: l%d i%x w%d\n", 197 len, csr, wait); 198 #endif 199 *dev->sci_mode &= ~SCI_MODE_DMA; 200 return 0; 201 } 202 } 203 204 *buf++ = *sci_dma; 205 len--; 206 } 207 208 QPRINTF(("otgsc_dma_in {%d} %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", 209 len, obp[0], obp[1], obp[2], obp[3], obp[4], obp[5], 210 obp[6], obp[7], obp[8], obp[9])); 211 212 *dev->sci_mode &= ~SCI_MODE_DMA; 213 return 0; 214 } 215 216 int 217 otgsc_dma_xfer_out (dev, len, buf, phase) 218 struct sci_softc *dev; 219 int len; 220 register u_char *buf; 221 int phase; 222 { 223 int wait = sci_data_wait; 224 u_char csr; 225 u_char *obp = buf; 226 volatile register u_char *sci_dma = dev->sci_data + 0x80; 227 volatile register u_char *sci_csr = dev->sci_csr; 228 volatile register u_char *sci_icmd = dev->sci_icmd; 229 230 QPRINTF(("otgsc_dma_out %d, csr=%02x\n", len, *dev->sci_bus_csr)); 231 232 QPRINTF(("otgsc_dma_out {%d} %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", 233 len, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], 234 buf[6], buf[7], buf[8], buf[9])); 235 236 *dev->sci_tcmd = phase; 237 *dev->sci_mode |= SCI_MODE_DMA; 238 *dev->sci_icmd = SCI_ICMD_DATA; 239 *dev->sci_dma_send = 0; 240 while (len > 0) { 241 wait = sci_data_wait; 242 while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) != 243 (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) { 244 if (!(*sci_csr & SCI_CSR_PHASE_MATCH) 245 || !(*dev->sci_bus_csr & SCI_BUS_BSY) 246 || --wait < 0) { 247 #ifdef DEBUG 248 if (sci_debug) 249 printf("otgsc_dma_out fail: l%d i%x w%d\n", 250 len, csr, wait); 251 #endif 252 *dev->sci_mode &= ~SCI_MODE_DMA; 253 return 0; 254 } 255 } 256 257 *sci_dma = *buf++; 258 len--; 259 } 260 261 wait = sci_data_wait; 262 while ((*sci_csr & (SCI_CSR_DREQ|SCI_CSR_PHASE_MATCH)) == 263 SCI_CSR_PHASE_MATCH && --wait); 264 265 266 *dev->sci_mode &= ~SCI_MODE_DMA; 267 return 0; 268 } 269 270 int 271 otgsc_intr() 272 { 273 struct sci_softc *dev; 274 int i, found; 275 u_char stat; 276 277 found = 0; 278 for (i = 0; i < otgsccd.cd_ndevs; i++) { 279 dev = otgsccd.cd_devs[i]; 280 if (dev == NULL) 281 continue; 282 if ((*dev->sci_csr & SCI_CSR_INT) == 0) 283 continue; 284 ++found; 285 stat = *dev->sci_iack; 286 *dev->sci_mode = 0; 287 } 288 return (found); 289 } 290
Indexes created Wed Sep 24 05:09:52 GMT 2025