1 /* $NetBSD: if_cs_isa.c,v 1.5 2001/11/26 19:17:06 yamt 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 1.5 2001/11/26 19:17:06 yamt 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 struct cfattach cs_isa_ca = { 68 sizeof(struct cs_softc_isa), cs_isa_probe, cs_isa_attach 69 }; 70 71 int 72 cs_isa_probe(parent, cf, aux) 73 struct device *parent; 74 struct cfdata *cf; 75 void *aux; 76 { 77 struct isa_attach_args *ia = aux; 78 bus_space_tag_t iot = ia->ia_iot; 79 bus_space_tag_t memt = ia->ia_memt; 80 bus_space_handle_t ioh, memh; 81 int rv = 0, have_io = 0, have_mem = 0; 82 u_int16_t isa_cfg, isa_membase; 83 bus_addr_t maddr = ia->ia_maddr; 84 int irq = ia->ia_irq; 85 86 /* 87 * Disallow wildcarded I/O base. 88 */ 89 if (ia->ia_iobase == ISACF_PORT_DEFAULT) 90 return (0); 91 92 /* 93 * Map the I/O space. 94 */ 95 if (bus_space_map(ia->ia_iot, ia->ia_iobase, CS8900_IOSIZE, 0, &ioh)) 96 goto out; 97 have_io = 1; 98 99 /* Verify that it's a Crystal product. */ 100 if (CS_READ_PACKET_PAGE_IO(iot, ioh, PKTPG_EISA_NUM) != 101 EISA_NUM_CRYSTAL) 102 goto out; 103 104 /* 105 * Verify that it's a supported chip. 106 */ 107 switch (CS_READ_PACKET_PAGE_IO(iot, ioh, PKTPG_PRODUCT_ID) & 108 PROD_ID_MASK) { 109 case PROD_ID_CS8900: 110 #ifdef notyet 111 case PROD_ID_CS8920: 112 case PROD_ID_CS8920M: 113 #endif 114 rv = 1; 115 } 116 117 /* 118 * If the IRQ or memory address were not specified, read the 119 * ISA_CFG EEPROM location. 120 */ 121 if (maddr == ISACF_IOMEM_DEFAULT || irq == ISACF_IRQ_DEFAULT) { 122 if (cs_verify_eeprom(iot, ioh) == CS_ERROR) { 123 printf("cs_isa_probe: EEPROM bad or missing\n"); 124 goto out; 125 } 126 if (cs_read_eeprom(iot, ioh, EEPROM_ISA_CFG, &isa_cfg) 127 == CS_ERROR) { 128 printf("cs_isa_probe: unable to read ISA_CFG\n"); 129 goto out; 130 } 131 } 132 133 /* 134 * If the IRQ wasn't specified, get it from the EEPROM. 135 */ 136 if (irq == ISACF_IRQ_DEFAULT) { 137 irq = isa_cfg & ISA_CFG_IRQ_MASK; 138 if (irq == 3) 139 irq = 5; 140 else 141 irq += 10; 142 } 143 144 /* 145 * If the memory address wasn't specified, get it from the EEPROM. 146 */ 147 if (maddr == ISACF_IOMEM_DEFAULT) { 148 if ((isa_cfg & ISA_CFG_MEM_MODE) == 0) { 149 /* EEPROM says don't use memory mode. */ 150 goto out; 151 } 152 if (cs_read_eeprom(iot, ioh, EEPROM_MEM_BASE, &isa_membase) 153 == CS_ERROR) { 154 printf("cs_isa_probe: unable to read MEM_BASE\n"); 155 goto out; 156 } 157 158 isa_membase &= MEM_BASE_MASK; 159 maddr = (int)isa_membase << 8; 160 } 161 162 /* 163 * We now have a valid mem address; attempt to map it. 164 */ 165 if (bus_space_map(ia->ia_memt, maddr, CS8900_MEMSIZE, 0, &memh)) { 166 /* Can't map it; fall back on i/o-only mode. */ 167 printf("cs_isa_probe: unable to map memory space\n"); 168 maddr = ISACF_IOMEM_DEFAULT; 169 } else 170 have_mem = 1; 171 172 out: 173 if (have_io) 174 bus_space_unmap(iot, ioh, CS8900_IOSIZE); 175 if (have_mem) 176 bus_space_unmap(memt, memh, CS8900_MEMSIZE); 177 178 if (rv) { 179 ia->ia_iosize = CS8900_IOSIZE; 180 ia->ia_maddr = maddr; 181 ia->ia_irq = irq; 182 if (ia->ia_maddr != ISACF_IOMEM_DEFAULT) 183 ia->ia_msize = CS8900_MEMSIZE; 184 } 185 return (rv); 186 } 187 188 void 189 cs_isa_attach(parent, self, aux) 190 struct device *parent, *self; 191 void *aux; 192 { 193 struct cs_softc *sc = (struct cs_softc *) self; 194 struct cs_softc_isa *isc = (void *) self; 195 struct isa_attach_args *ia = aux; 196 197 isc->sc_ic = ia->ia_ic; 198 sc->sc_iot = ia->ia_iot; 199 sc->sc_memt = ia->ia_memt; 200 201 isc->sc_drq = ia->ia_drq; 202 sc->sc_irq = ia->ia_irq; 203 204 printf("\n"); 205 206 /* 207 * Map the device. 208 */ 209 if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 210 0, &sc->sc_ioh)) { 211 printf("%s: unable to map i/o space\n", sc->sc_dev.dv_xname); 212 return; 213 } 214 215 /* 216 * Validate IRQ. 217 */ 218 if (CS8900_IRQ_ISVALID(sc->sc_irq) == 0) { 219 printf("%s: invalid IRQ %d\n", sc->sc_dev.dv_xname, sc->sc_irq); 220 return; 221 } 222 223 /* 224 * Map the memory space if it was specified. If we can do this, 225 * we set ourselves up to use memory mode forever. Otherwise, 226 * we fall back on I/O mode. 227 */ 228 if (ia->ia_maddr != ISACF_IOMEM_DEFAULT && 229 ia->ia_msize == CS8900_MEMSIZE && 230 CS8900_MEMBASE_ISVALID(ia->ia_maddr)) { 231 if (bus_space_map(sc->sc_memt, ia->ia_maddr, ia->ia_msize, 232 0, &sc->sc_memh)) { 233 printf("%s: unable to map memory space\n", 234 sc->sc_dev.dv_xname); 235 } else { 236 sc->sc_cfgflags |= CFGFLG_MEM_MODE; 237 sc->sc_pktpgaddr = ia->ia_maddr; 238 } 239 } 240 241 sc->sc_ih = isa_intr_establish(ia->ia_ic, sc->sc_irq, IST_EDGE, 242 IPL_NET, cs_intr, sc); 243 if (sc->sc_ih == NULL) { 244 printf("%s: unable to establish interrupt\n", 245 sc->sc_dev.dv_xname); 246 return; 247 } 248 249 sc->sc_dma_chipinit = cs_isa_dma_chipinit; 250 sc->sc_dma_attach = cs_isa_dma_attach; 251 sc->sc_dma_process_rx = cs_process_rx_dma; 252 253 cs_attach(sc, NULL, NULL, 0, 0); 254 } 255