1 /* $NetBSD: if_cs_isa.c,v 1.2 1998/07/27 18:27:36 thorpej 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/param.h> 37 #include <sys/systm.h> 38 #include <sys/socket.h> 39 #include <sys/device.h> 40 41 #include <net/if.h> 42 #include <net/if_ether.h> 43 #include <net/if_media.h> 44 45 #include <machine/bus.h> 46 #include <machine/intr.h> 47 48 #include <dev/isa/isareg.h> 49 #include <dev/isa/isavar.h> 50 #include <dev/isa/isadmavar.h> 51 52 #include <dev/isa/cs89x0reg.h> 53 #include <dev/isa/cs89x0var.h> 54 55 int cs_isa_probe __P((struct device *, struct cfdata *, void *)); 56 void cs_isa_attach __P((struct device *, struct device *, void *)); 57 58 struct cfattach cs_isa_ca = { 59 sizeof(struct cs_softc), cs_isa_probe, cs_isa_attach 60 }; 61 62 int 63 cs_isa_probe(parent, cf, aux) 64 struct device *parent; 65 struct cfdata *cf; 66 void *aux; 67 { 68 struct isa_attach_args *ia = aux; 69 bus_space_tag_t iot = ia->ia_iot; 70 bus_space_tag_t memt = ia->ia_memt; 71 bus_space_handle_t ioh, memh; 72 int rv = 0, have_io = 0, have_mem = 0; 73 u_int16_t isa_cfg, isa_membase; 74 bus_addr_t maddr = ia->ia_maddr; 75 int irq = ia->ia_irq; 76 77 /* 78 * Disallow wildcarded I/O base. 79 */ 80 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 81 return (0); 82 83 /* 84 * Map the I/O space. 85 */ 86 if (bus_space_map(ia->ia_iot, ia->ia_iobase, CS8900_IOSIZE, 0, &ioh)) 87 goto out; 88 have_io = 1; 89 90 /* Verify that it's a Crystal product. */ 91 if (CS_READ_PACKET_PAGE_IO(iot, ioh, PKTPG_EISA_NUM) != 92 EISA_NUM_CRYSTAL) 93 goto out; 94 95 /* 96 * Verify that it's a supported chip. 97 */ 98 switch (CS_READ_PACKET_PAGE_IO(iot, ioh, PKTPG_PRODUCT_ID) & 99 PROD_ID_MASK) { 100 case PROD_ID_CS8900: 101 #ifdef notyet 102 case PROD_ID_CS8920: 103 case PROD_ID_CS8920M: 104 #endif 105 rv = 1; 106 } 107 108 /* 109 * If the IRQ or memory address were not specified, read the 110 * ISA_CFG EEPROM location. 111 */ 112 if (maddr == ISACF_IOMEM_DEFAULT || irq == ISACF_IRQ_DEFAULT) { 113 if (cs_verify_eeprom(iot, ioh) == CS_ERROR) { 114 printf("cs_isa_probe: EEPROM bad or missing\n"); 115 goto out; 116 } 117 if (cs_read_eeprom(iot, ioh, EEPROM_ISA_CFG, &isa_cfg) 118 == CS_ERROR) { 119 printf("cs_isa_probe: unable to read ISA_CFG\n"); 120 goto out; 121 } 122 } 123 124 /* 125 * If the IRQ wasn't specified, get it from the EEPROM. 126 */ 127 if (irq == ISACF_IRQ_DEFAULT) { 128 irq = isa_cfg & ISA_CFG_IRQ_MASK; 129 if (irq == 3) 130 irq = 5; 131 else 132 irq += 10; 133 } 134 135 /* 136 * If the memory address wasn't specified, get it from the EEPROM. 137 */ 138 if (maddr == ISACF_IOMEM_DEFAULT) { 139 if ((isa_cfg & ISA_CFG_MEM_MODE) == 0) { 140 /* EEPROM says don't use memory mode. */ 141 goto out; 142 } 143 if (cs_read_eeprom(iot, ioh, EEPROM_MEM_BASE, &isa_membase) 144 == CS_ERROR) { 145 printf("cs_isa_probe: unable to read MEM_BASE\n"); 146 goto out; 147 } 148 149 isa_membase &= MEM_BASE_MASK; 150 maddr = (int)isa_membase << 8; 151 } 152 153 /* 154 * We now have a valid mem address; attempt to map it. 155 */ 156 if (bus_space_map(ia->ia_memt, maddr, CS8900_MEMSIZE, 0, &memh)) { 157 /* Can't map it; fall back on i/o-only mode. */ 158 printf("cs_isa_probe: unable to map memory space\n"); 159 maddr = ISACF_IOMEM_DEFAULT; 160 } else 161 have_mem = 1; 162 163 out: 164 if (have_io) 165 bus_space_unmap(iot, ioh, CS8900_IOSIZE); 166 if (have_mem) 167 bus_space_unmap(memt, memh, CS8900_MEMSIZE); 168 169 if (rv) { 170 ia->ia_iosize = CS8900_IOSIZE; 171 ia->ia_maddr = maddr; 172 ia->ia_irq = irq; 173 if (ia->ia_maddr != ISACF_IOMEM_DEFAULT) 174 ia->ia_msize = CS8900_MEMSIZE; 175 } 176 return (rv); 177 } 178 179 void 180 cs_isa_attach(parent, self, aux) 181 struct device *parent, *self; 182 void *aux; 183 { 184 struct cs_softc *sc = (struct cs_softc *) self; 185 struct isa_attach_args *ia = aux; 186 187 sc->sc_ic = ia->ia_ic; 188 sc->sc_iot = ia->ia_iot; 189 sc->sc_memt = ia->ia_memt; 190 191 sc->sc_drq = ia->ia_drq; 192 sc->sc_irq = ia->ia_irq; 193 194 printf("\n"); 195 196 /* 197 * Map the device. 198 */ 199 if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 200 0, &sc->sc_ioh)) { 201 printf("%s: unable to map i/o space\n", sc->sc_dev.dv_xname); 202 return; 203 } 204 205 /* 206 * Validate IRQ. 207 */ 208 if (CS8900_IRQ_ISVALID(sc->sc_irq) == 0) { 209 printf("%s: invalid IRQ %d\n", sc->sc_dev.dv_xname, sc->sc_irq); 210 return; 211 } 212 213 /* 214 * Map the memory space if it was specified. If we can do this, 215 * we set ourselves up to use memory mode forever. Otherwise, 216 * we fall back on I/O mode. 217 */ 218 if (ia->ia_maddr != ISACF_IOMEM_DEFAULT && 219 ia->ia_msize == CS8900_MEMSIZE && 220 CS8900_MEMBASE_ISVALID(ia->ia_maddr)) { 221 if (bus_space_map(sc->sc_memt, ia->ia_maddr, ia->ia_msize, 222 0, &sc->sc_memh)) { 223 printf("%s: unable to map memory space\n", 224 sc->sc_dev.dv_xname); 225 } else { 226 sc->sc_cfgflags |= CFGFLG_MEM_MODE; 227 sc->sc_pktpgaddr = ia->ia_maddr; 228 } 229 } 230 231 sc->sc_ih = isa_intr_establish(ia->ia_ic, sc->sc_irq, IST_EDGE, 232 IPL_NET, cs_intr, sc); 233 if (sc->sc_ih == NULL) { 234 printf("%s: unable to establish interrupt\n", 235 sc->sc_dev.dv_xname); 236 return; 237 } 238 239 cs_attach(sc, NULL, NULL, 0, 0); 240 } 241