1 /* $NetBSD: if_cs_isa.c,v 1.10 2002/10/02 03:10:47 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/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: if_cs_isa.c,v 1.10 2002/10/02 03:10:47 thorpej 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 == ISACF_PORT_DEFAULT) 97 return (0); 98 99 if (ia->ia_niomem > 0) 100 maddr = ia->ia_iomem[0].ir_addr; 101 else 102 maddr = ISACF_IOMEM_DEFAULT; 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 rv = 1; 131 } 132 133 /* 134 * If the IRQ or memory address were not specified, read the 135 * ISA_CFG EEPROM location. 136 */ 137 if (maddr == ISACF_IOMEM_DEFAULT || 138 ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) { 139 if (cs_verify_eeprom(&sc) == CS_ERROR) { 140 printf("cs_isa_probe: EEPROM bad or missing\n"); 141 goto out; 142 } 143 if (cs_read_eeprom(&sc, EEPROM_ISA_CFG, &isa_cfg) 144 == CS_ERROR) { 145 printf("cs_isa_probe: unable to read ISA_CFG\n"); 146 goto out; 147 } 148 } 149 150 /* 151 * If the IRQ wasn't specified, get it from the EEPROM. 152 */ 153 if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) { 154 irq = isa_cfg & ISA_CFG_IRQ_MASK; 155 if (irq == 3) 156 irq = 5; 157 else 158 irq += 10; 159 } else 160 irq = ia->ia_irq[0].ir_irq; 161 162 /* 163 * If the memory address wasn't specified, get it from the EEPROM. 164 */ 165 if (maddr == ISACF_IOMEM_DEFAULT) { 166 if ((isa_cfg & ISA_CFG_MEM_MODE) == 0) { 167 /* EEPROM says don't use memory mode. */ 168 goto out; 169 } 170 if (cs_read_eeprom(&sc, EEPROM_MEM_BASE, &isa_membase) 171 == CS_ERROR) { 172 printf("cs_isa_probe: unable to read MEM_BASE\n"); 173 goto out; 174 } 175 176 isa_membase &= MEM_BASE_MASK; 177 maddr = (int)isa_membase << 8; 178 } 179 180 /* 181 * We now have a valid mem address; attempt to map it. 182 */ 183 if (bus_space_map(ia->ia_memt, maddr, CS8900_MEMSIZE, 0, &memh)) { 184 /* Can't map it; fall back on i/o-only mode. */ 185 printf("cs_isa_probe: unable to map memory space\n"); 186 maddr = ISACF_IOMEM_DEFAULT; 187 } else 188 have_mem = 1; 189 190 out: 191 if (have_io) 192 bus_space_unmap(iot, ioh, CS8900_IOSIZE); 193 if (have_mem) 194 bus_space_unmap(memt, memh, CS8900_MEMSIZE); 195 196 if (rv) { 197 ia->ia_nio = 1; 198 ia->ia_io[0].ir_size = CS8900_IOSIZE; 199 200 if (maddr == ISACF_IOMEM_DEFAULT) 201 ia->ia_niomem = 0; 202 else { 203 ia->ia_niomem = 1; 204 ia->ia_iomem[0].ir_addr = maddr; 205 ia->ia_iomem[0].ir_size = CS8900_MEMSIZE; 206 } 207 208 ia->ia_nirq = 1; 209 ia->ia_irq[0].ir_irq = irq; 210 } 211 return (rv); 212 } 213 214 void 215 cs_isa_attach(parent, self, aux) 216 struct device *parent, *self; 217 void *aux; 218 { 219 struct cs_softc *sc = (struct cs_softc *) self; 220 struct cs_softc_isa *isc = (void *) self; 221 struct isa_attach_args *ia = aux; 222 223 isc->sc_ic = ia->ia_ic; 224 sc->sc_iot = ia->ia_iot; 225 sc->sc_memt = ia->ia_memt; 226 227 if (ia->ia_ndrq > 0) 228 isc->sc_drq = ia->ia_drq[0].ir_drq; 229 else 230 isc->sc_drq = -1; 231 232 sc->sc_irq = ia->ia_irq[0].ir_irq; 233 234 printf("\n"); 235 236 /* 237 * Map the device. 238 */ 239 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, CS8900_IOSIZE, 240 0, &sc->sc_ioh)) { 241 printf("%s: unable to map i/o space\n", sc->sc_dev.dv_xname); 242 return; 243 } 244 245 /* 246 * Validate IRQ. 247 */ 248 if (CS8900_IRQ_ISVALID(sc->sc_irq) == 0) { 249 printf("%s: invalid IRQ %d\n", sc->sc_dev.dv_xname, sc->sc_irq); 250 return; 251 } 252 253 /* 254 * Map the memory space if it was specified. If we can do this, 255 * we set ourselves up to use memory mode forever. Otherwise, 256 * we fall back on I/O mode. 257 */ 258 if (ia->ia_iomem[0].ir_addr != ISACF_IOMEM_DEFAULT && 259 ia->ia_iomem[0].ir_size == CS8900_MEMSIZE && 260 CS8900_MEMBASE_ISVALID(ia->ia_iomem[0].ir_addr)) { 261 if (bus_space_map(sc->sc_memt, ia->ia_iomem[0].ir_addr, 262 CS8900_MEMSIZE, 0, &sc->sc_memh)) { 263 printf("%s: unable to map memory space\n", 264 sc->sc_dev.dv_xname); 265 } else { 266 sc->sc_cfgflags |= CFGFLG_MEM_MODE; 267 sc->sc_pktpgaddr = ia->ia_iomem[0].ir_addr; 268 } 269 } 270 271 sc->sc_ih = isa_intr_establish(ia->ia_ic, sc->sc_irq, IST_EDGE, 272 IPL_NET, cs_intr, sc); 273 if (sc->sc_ih == NULL) { 274 printf("%s: unable to establish interrupt\n", 275 sc->sc_dev.dv_xname); 276 return; 277 } 278 279 sc->sc_dma_chipinit = cs_isa_dma_chipinit; 280 sc->sc_dma_attach = cs_isa_dma_attach; 281 sc->sc_dma_process_rx = cs_process_rx_dma; 282 283 cs_attach(sc, NULL, NULL, 0, 0); 284 } 285