if_cs_isa.c revision 1.13
1 /* $NetBSD: if_cs_isa.c,v 1.13 2004/09/14 20:20:47 drochner Exp $ */ 2 3 /* 4 * Copyright 1997 5 * Digital Equipment Corporation. All rights reserved. 6 * 7 * This software is furnished under license and may be used and 8 * copied only in accordance with the following terms and conditions. 9 * Subject to these conditions, you may download, copy, install, 10 * use, modify and distribute this software in source and/or binary 11 * form. No title or ownership is transferred hereby. 12 * 13 * 1) Any source code used, modified or distributed must reproduce 14 * and retain this copyright notice and list of conditions as 15 * they appear in the source file. 16 * 17 * 2) No right is granted to use any trade name, trademark, or logo of 18 * Digital Equipment Corporation. Neither the "Digital Equipment 19 * Corporation" name nor any trademark or logo of Digital Equipment 20 * Corporation may be used to endorse or promote products derived 21 * from this software without the prior written permission of 22 * Digital Equipment Corporation. 23 * 24 * 3) This software is provided "AS-IS" and any express or implied 25 * warranties, including but not limited to, any implied warranties 26 * of merchantability, fitness for a particular purpose, or 27 * non-infringement are disclaimed. In no event shall DIGITAL be 28 * liable for any damages whatsoever, and in particular, DIGITAL 29 * shall not be liable for special, indirect, consequential, or 30 * incidental damages or damages for lost profits, loss of 31 * revenue or loss of use, whether such damages arise in contract, 32 * negligence, tort, under statute, in equity, at law or otherwise, 33 * even if advised of the possibility of such damage. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: if_cs_isa.c,v 1.13 2004/09/14 20:20:47 drochner Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/socket.h> 42 #include <sys/device.h> 43 44 #include "rnd.h" 45 #if NRND > 0 46 #include <sys/rnd.h> 47 #endif 48 49 #include <net/if.h> 50 #include <net/if_ether.h> 51 #include <net/if_media.h> 52 53 #include <machine/bus.h> 54 #include <machine/intr.h> 55 56 #include <dev/isa/isareg.h> 57 #include <dev/isa/isavar.h> 58 #include <dev/isa/isadmavar.h> 59 60 #include <dev/ic/cs89x0reg.h> 61 #include <dev/ic/cs89x0var.h> 62 #include <dev/isa/cs89x0isavar.h> 63 64 int cs_isa_probe __P((struct device *, struct cfdata *, void *)); 65 void cs_isa_attach __P((struct device *, struct device *, void *)); 66 67 CFATTACH_DECL(cs_isa, sizeof(struct cs_softc), 68 cs_isa_probe, cs_isa_attach, NULL, NULL); 69 70 int 71 cs_isa_probe(parent, cf, aux) 72 struct device *parent; 73 struct cfdata *cf; 74 void *aux; 75 { 76 struct isa_attach_args *ia = aux; 77 bus_space_tag_t iot = ia->ia_iot; 78 bus_space_tag_t memt = ia->ia_memt; 79 bus_space_handle_t ioh, memh; 80 struct cs_softc sc; 81 int rv = 0, have_io = 0, have_mem = 0; 82 u_int16_t isa_cfg, isa_membase; 83 int maddr, irq; 84 85 if (ia->ia_nio < 1) 86 return (0); 87 if (ia->ia_nirq < 1) 88 return (0); 89 90 if (ISA_DIRECT_CONFIG(ia)) 91 return (0); 92 93 /* 94 * Disallow wildcarded I/O base. 95 */ 96 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 97 return (0); 98 99 if (ia->ia_niomem > 0) 100 maddr = ia->ia_iomem[0].ir_addr; 101 else 102 maddr = ISA_UNKNOWN_IOMEM; 103 104 /* 105 * Map the I/O space. 106 */ 107 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, CS8900_IOSIZE, 108 0, &ioh)) 109 goto out; 110 have_io = 1; 111 112 memset(&sc, 0, sizeof sc); 113 sc.sc_iot = iot; 114 sc.sc_ioh = ioh; 115 /* Verify that it's a Crystal product. */ 116 if (CS_READ_PACKET_PAGE_IO(&sc, PKTPG_EISA_NUM) != 117 EISA_NUM_CRYSTAL) 118 goto out; 119 120 /* 121 * Verify that it's a supported chip. 122 */ 123 switch (CS_READ_PACKET_PAGE_IO(&sc, PKTPG_PRODUCT_ID) & 124 PROD_ID_MASK) { 125 case PROD_ID_CS8900: 126 #ifdef notyet 127 case PROD_ID_CS8920: 128 case PROD_ID_CS8920M: 129 #endif 130 break; 131 default: 132 /* invalid product ID */ 133 goto out; 134 } 135 136 /* 137 * If the IRQ or memory address were not specified, read the 138 * ISA_CFG EEPROM location. 139 */ 140 if (maddr == ISA_UNKNOWN_IOMEM || 141 ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) { 142 if (cs_verify_eeprom(&sc) == CS_ERROR) { 143 printf("cs_isa_probe: EEPROM bad or missing\n"); 144 goto out; 145 } 146 if (cs_read_eeprom(&sc, EEPROM_ISA_CFG, &isa_cfg) 147 == CS_ERROR) { 148 printf("cs_isa_probe: unable to read ISA_CFG\n"); 149 goto out; 150 } 151 } 152 153 /* 154 * If the IRQ wasn't specified, get it from the EEPROM. 155 */ 156 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) { 157 irq = isa_cfg & ISA_CFG_IRQ_MASK; 158 if (irq == 3) 159 irq = 5; 160 else 161 irq += 10; 162 } else 163 irq = ia->ia_irq[0].ir_irq; 164 165 /* 166 * If the memory address wasn't specified, get it from the EEPROM. 167 */ 168 if (maddr == ISA_UNKNOWN_IOMEM) { 169 if ((isa_cfg & ISA_CFG_MEM_MODE) == 0) { 170 /* EEPROM says don't use memory mode. */ 171 goto out; 172 } 173 if (cs_read_eeprom(&sc, EEPROM_MEM_BASE, &isa_membase) 174 == CS_ERROR) { 175 printf("cs_isa_probe: unable to read MEM_BASE\n"); 176 goto out; 177 } 178 179 isa_membase &= MEM_BASE_MASK; 180 maddr = (int)isa_membase << 8; 181 } 182 183 /* 184 * We now have a valid mem address; attempt to map it. 185 */ 186 if (bus_space_map(ia->ia_memt, maddr, CS8900_MEMSIZE, 0, &memh)) { 187 /* Can't map it; fall back on i/o-only mode. */ 188 printf("cs_isa_probe: unable to map memory space\n"); 189 maddr = ISA_UNKNOWN_IOMEM; 190 } else 191 have_mem = 1; 192 193 ia->ia_nio = 1; 194 ia->ia_io[0].ir_size = CS8900_IOSIZE; 195 196 if (maddr == ISA_UNKNOWN_IOMEM) 197 ia->ia_niomem = 0; 198 else { 199 ia->ia_niomem = 1; 200 ia->ia_iomem[0].ir_addr = maddr; 201 ia->ia_iomem[0].ir_size = CS8900_MEMSIZE; 202 } 203 204 ia->ia_nirq = 1; 205 ia->ia_irq[0].ir_irq = irq; 206 207 rv = 1; 208 209 out: 210 if (have_io) 211 bus_space_unmap(iot, ioh, CS8900_IOSIZE); 212 if (have_mem) 213 bus_space_unmap(memt, memh, CS8900_MEMSIZE); 214 215 return (rv); 216 } 217 218 void 219 cs_isa_attach(parent, self, aux) 220 struct device *parent, *self; 221 void *aux; 222 { 223 struct cs_softc *sc = (struct cs_softc *) self; 224 struct cs_softc_isa *isc = (void *) self; 225 struct isa_attach_args *ia = aux; 226 227 isc->sc_ic = ia->ia_ic; 228 sc->sc_iot = ia->ia_iot; 229 sc->sc_memt = ia->ia_memt; 230 231 if (ia->ia_ndrq > 0) 232 isc->sc_drq = ia->ia_drq[0].ir_drq; 233 else 234 isc->sc_drq = -1; 235 236 sc->sc_irq = ia->ia_irq[0].ir_irq; 237 238 printf("\n"); 239 240 /* 241 * Map the device. 242 */ 243 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, CS8900_IOSIZE, 244 0, &sc->sc_ioh)) { 245 printf("%s: unable to map i/o space\n", sc->sc_dev.dv_xname); 246 return; 247 } 248 249 /* 250 * Validate IRQ. 251 */ 252 if (CS8900_IRQ_ISVALID(sc->sc_irq) == 0) { 253 printf("%s: invalid IRQ %d\n", sc->sc_dev.dv_xname, sc->sc_irq); 254 return; 255 } 256 257 /* 258 * Map the memory space if it was specified. If we can do this, 259 * we set ourselves up to use memory mode forever. Otherwise, 260 * we fall back on I/O mode. 261 */ 262 if (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM && 263 ia->ia_iomem[0].ir_size == CS8900_MEMSIZE && 264 CS8900_MEMBASE_ISVALID(ia->ia_iomem[0].ir_addr)) { 265 if (bus_space_map(sc->sc_memt, ia->ia_iomem[0].ir_addr, 266 CS8900_MEMSIZE, 0, &sc->sc_memh)) { 267 printf("%s: unable to map memory space\n", 268 sc->sc_dev.dv_xname); 269 } else { 270 sc->sc_cfgflags |= CFGFLG_MEM_MODE; 271 sc->sc_pktpgaddr = ia->ia_iomem[0].ir_addr; 272 } 273 } 274 275 sc->sc_ih = isa_intr_establish(ia->ia_ic, sc->sc_irq, IST_EDGE, 276 IPL_NET, cs_intr, sc); 277 if (sc->sc_ih == NULL) { 278 printf("%s: unable to establish interrupt\n", 279 sc->sc_dev.dv_xname); 280 return; 281 } 282 283 sc->sc_dma_chipinit = cs_isa_dma_chipinit; 284 sc->sc_dma_attach = cs_isa_dma_attach; 285 sc->sc_dma_process_rx = cs_process_rx_dma; 286 287 cs_attach(sc, NULL, NULL, 0, 0); 288 } 289
Indexes created Mon Sep 22 13:09:51 GMT 2025