1 /* $NetBSD: if_cs_isa.c,v 1.4 2001/11/13 08:01:16 lukem 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 1.4 2001/11/13 08:01:16 lukem 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/isa/cs89x0reg.h> 61 #include <dev/isa/cs89x0var.h> 62 63 int cs_isa_probe __P((struct device *, struct cfdata *, void *)); 64 void cs_isa_attach __P((struct device *, struct device *, void *)); 65 66 struct cfattach cs_isa_ca = { 67 sizeof(struct cs_softc), cs_isa_probe, cs_isa_attach 68 }; 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 int rv = 0, have_io = 0, have_mem = 0; 81 u_int16_t isa_cfg, isa_membase; 82 bus_addr_t maddr = ia->ia_maddr; 83 int irq = ia->ia_irq; 84 85 /* 86 * Disallow wildcarded I/O base. 87 */ 88 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 89 return (0); 90 91 /* 92 * Map the I/O space. 93 */ 94 if (bus_space_map(ia->ia_iot, ia->ia_iobase, CS8900_IOSIZE, 0, &ioh)) 95 goto out; 96 have_io = 1; 97 98 /* Verify that it's a Crystal product. */ 99 if (CS_READ_PACKET_PAGE_IO(iot, ioh, PKTPG_EISA_NUM) != 100 EISA_NUM_CRYSTAL) 101 goto out; 102 103 /* 104 * Verify that it's a supported chip. 105 */ 106 switch (CS_READ_PACKET_PAGE_IO(iot, ioh, PKTPG_PRODUCT_ID) & 107 PROD_ID_MASK) { 108 case PROD_ID_CS8900: 109 #ifdef notyet 110 case PROD_ID_CS8920: 111 case PROD_ID_CS8920M: 112 #endif 113 rv = 1; 114 } 115 116 /* 117 * If the IRQ or memory address were not specified, read the 118 * ISA_CFG EEPROM location. 119 */ 120 if (maddr == ISACF_IOMEM_DEFAULT || irq == ISACF_IRQ_DEFAULT) { 121 if (cs_verify_eeprom(iot, ioh) == CS_ERROR) { 122 printf("cs_isa_probe: EEPROM bad or missing\n"); 123 goto out; 124 } 125 if (cs_read_eeprom(iot, ioh, EEPROM_ISA_CFG, &isa_cfg) 126 == CS_ERROR) { 127 printf("cs_isa_probe: unable to read ISA_CFG\n"); 128 goto out; 129 } 130 } 131 132 /* 133 * If the IRQ wasn't specified, get it from the EEPROM. 134 */ 135 if (irq == ISACF_IRQ_DEFAULT) { 136 irq = isa_cfg & ISA_CFG_IRQ_MASK; 137 if (irq == 3) 138 irq = 5; 139 else 140 irq += 10; 141 } 142 143 /* 144 * If the memory address wasn't specified, get it from the EEPROM. 145 */ 146 if (maddr == ISACF_IOMEM_DEFAULT) { 147 if ((isa_cfg & ISA_CFG_MEM_MODE) == 0) { 148 /* EEPROM says don't use memory mode. */ 149 goto out; 150 } 151 if (cs_read_eeprom(iot, ioh, EEPROM_MEM_BASE, &isa_membase) 152 == CS_ERROR) { 153 printf("cs_isa_probe: unable to read MEM_BASE\n"); 154 goto out; 155 } 156 157 isa_membase &= MEM_BASE_MASK; 158 maddr = (int)isa_membase << 8; 159 } 160 161 /* 162 * We now have a valid mem address; attempt to map it. 163 */ 164 if (bus_space_map(ia->ia_memt, maddr, CS8900_MEMSIZE, 0, &memh)) { 165 /* Can't map it; fall back on i/o-only mode. */ 166 printf("cs_isa_probe: unable to map memory space\n"); 167 maddr = ISACF_IOMEM_DEFAULT; 168 } else 169 have_mem = 1; 170 171 out: 172 if (have_io) 173 bus_space_unmap(iot, ioh, CS8900_IOSIZE); 174 if (have_mem) 175 bus_space_unmap(memt, memh, CS8900_MEMSIZE); 176 177 if (rv) { 178 ia->ia_iosize = CS8900_IOSIZE; 179 ia->ia_maddr = maddr; 180 ia->ia_irq = irq; 181 if (ia->ia_maddr != ISACF_IOMEM_DEFAULT) 182 ia->ia_msize = CS8900_MEMSIZE; 183 } 184 return (rv); 185 } 186 187 void 188 cs_isa_attach(parent, self, aux) 189 struct device *parent, *self; 190 void *aux; 191 { 192 struct cs_softc *sc = (struct cs_softc *) self; 193 struct isa_attach_args *ia = aux; 194 195 sc->sc_ic = ia->ia_ic; 196 sc->sc_iot = ia->ia_iot; 197 sc->sc_memt = ia->ia_memt; 198 199 sc->sc_drq = ia->ia_drq; 200 sc->sc_irq = ia->ia_irq; 201 202 printf("\n"); 203 204 /* 205 * Map the device. 206 */ 207 if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 208 0, &sc->sc_ioh)) { 209 printf("%s: unable to map i/o space\n", sc->sc_dev.dv_xname); 210 return; 211 } 212 213 /* 214 * Validate IRQ. 215 */ 216 if (CS8900_IRQ_ISVALID(sc->sc_irq) == 0) { 217 printf("%s: invalid IRQ %d\n", sc->sc_dev.dv_xname, sc->sc_irq); 218 return; 219 } 220 221 /* 222 * Map the memory space if it was specified. If we can do this, 223 * we set ourselves up to use memory mode forever. Otherwise, 224 * we fall back on I/O mode. 225 */ 226 if (ia->ia_maddr != ISACF_IOMEM_DEFAULT && 227 ia->ia_msize == CS8900_MEMSIZE && 228 CS8900_MEMBASE_ISVALID(ia->ia_maddr)) { 229 if (bus_space_map(sc->sc_memt, ia->ia_maddr, ia->ia_msize, 230 0, &sc->sc_memh)) { 231 printf("%s: unable to map memory space\n", 232 sc->sc_dev.dv_xname); 233 } else { 234 sc->sc_cfgflags |= CFGFLG_MEM_MODE; 235 sc->sc_pktpgaddr = ia->ia_maddr; 236 } 237 } 238 239 sc->sc_ih = isa_intr_establish(ia->ia_ic, sc->sc_irq, IST_EDGE, 240 IPL_NET, cs_intr, sc); 241 if (sc->sc_ih == NULL) { 242 printf("%s: unable to establish interrupt\n", 243 sc->sc_dev.dv_xname); 244 return; 245 } 246 247 cs_attach(sc, NULL, NULL, 0, 0); 248 } 249