1 /* $NetBSD: if_cs_isa.c,v 1.26 2012/02/02 19:43:04 tls 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 1.26 2012/02/02 19:43:04 tls 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 <sys/rnd.h> 45 46 #include <net/if.h> 47 #include <net/if_ether.h> 48 #include <net/if_media.h> 49 50 #include <sys/bus.h> 51 #include <sys/intr.h> 52 53 #include <dev/isa/isareg.h> 54 #include <dev/isa/isavar.h> 55 #include <dev/isa/isadmavar.h> 56 57 #include <dev/ic/cs89x0reg.h> 58 #include <dev/ic/cs89x0var.h> 59 #include <dev/isa/cs89x0isavar.h> 60 61 static int cs_isa_probe(device_t, cfdata_t, void *); 62 static void cs_isa_attach(device_t, device_t, void *); 63 64 CFATTACH_DECL_NEW(cs_isa, sizeof(struct cs_softc_isa), 65 cs_isa_probe, cs_isa_attach, NULL, NULL); 66 67 int 68 cs_isa_probe(device_t parent, cfdata_t cf, void *aux) 69 { 70 struct isa_attach_args *ia = aux; 71 bus_space_tag_t iot = ia->ia_iot; 72 bus_space_tag_t memt = ia->ia_memt; 73 bus_space_handle_t ioh, memh; 74 struct cs_softc sc; 75 int rv = 0, have_io = 0, have_mem = 0; 76 u_int16_t isa_cfg, isa_membase; 77 int maddr, irq; 78 79 if (ia->ia_nio < 1) 80 return (0); 81 if (ia->ia_nirq < 1) 82 return (0); 83 84 if (ISA_DIRECT_CONFIG(ia)) 85 return (0); 86 87 /* 88 * Disallow wildcarded I/O base. 89 */ 90 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 91 return (0); 92 93 if (ia->ia_niomem > 0) 94 maddr = ia->ia_iomem[0].ir_addr; 95 else 96 maddr = ISA_UNKNOWN_IOMEM; 97 98 /* 99 * Map the I/O space. 100 */ 101 if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, CS8900_IOSIZE, 102 0, &ioh)) 103 goto out; 104 have_io = 1; 105 106 memset(&sc, 0, sizeof sc); 107 sc.sc_iot = iot; 108 sc.sc_ioh = ioh; 109 /* Verify that it's a Crystal product. */ 110 if (CS_READ_PACKET_PAGE_IO(&sc, PKTPG_EISA_NUM) != 111 EISA_NUM_CRYSTAL) 112 goto out; 113 114 /* 115 * Verify that it's a supported chip. 116 */ 117 switch (CS_READ_PACKET_PAGE_IO(&sc, PKTPG_PRODUCT_ID) & 118 PROD_ID_MASK) { 119 case PROD_ID_CS8900: 120 #ifdef notyet 121 case PROD_ID_CS8920: 122 case PROD_ID_CS8920M: 123 #endif 124 break; 125 default: 126 /* invalid product ID */ 127 goto out; 128 } 129 130 /* 131 * If the IRQ or memory address were not specified, read the 132 * ISA_CFG EEPROM location. 133 */ 134 if (maddr == ISA_UNKNOWN_IOMEM || 135 ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) { 136 if (cs_verify_eeprom(&sc) == CS_ERROR) { 137 printf("cs_isa_probe: EEPROM bad or missing\n"); 138 goto out; 139 } 140 if (cs_read_eeprom(&sc, EEPROM_ISA_CFG, &isa_cfg) 141 == CS_ERROR) { 142 printf("cs_isa_probe: unable to read ISA_CFG\n"); 143 goto out; 144 } 145 } 146 147 /* 148 * If the IRQ wasn't specified, get it from the EEPROM. 149 */ 150 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) { 151 irq = isa_cfg & ISA_CFG_IRQ_MASK; 152 if (irq == 3) 153 irq = 5; 154 else 155 irq += 10; 156 } else 157 irq = ia->ia_irq[0].ir_irq; 158 159 /* 160 * If the memory address wasn't specified, get it from the EEPROM. 161 */ 162 if (maddr == ISA_UNKNOWN_IOMEM) { 163 if ((isa_cfg & ISA_CFG_MEM_MODE) == 0) { 164 /* EEPROM says don't use memory mode. */ 165 goto out; 166 } 167 if (cs_read_eeprom(&sc, EEPROM_MEM_BASE, &isa_membase) 168 == CS_ERROR) { 169 printf("cs_isa_probe: unable to read MEM_BASE\n"); 170 goto out; 171 } 172 173 isa_membase &= MEM_BASE_MASK; 174 maddr = (int)isa_membase << 8; 175 } 176 177 /* 178 * We now have a valid mem address; attempt to map it. 179 */ 180 if (bus_space_map(ia->ia_memt, maddr, CS8900_MEMSIZE, 0, &memh)) { 181 /* Can't map it; fall back on i/o-only mode. */ 182 printf("cs_isa_probe: unable to map memory space\n"); 183 maddr = ISA_UNKNOWN_IOMEM; 184 } else 185 have_mem = 1; 186 187 ia->ia_nio = 1; 188 ia->ia_io[0].ir_size = CS8900_IOSIZE; 189 190 if (maddr == ISA_UNKNOWN_IOMEM) 191 ia->ia_niomem = 0; 192 else { 193 ia->ia_niomem = 1; 194 ia->ia_iomem[0].ir_addr = maddr; 195 ia->ia_iomem[0].ir_size = CS8900_MEMSIZE; 196 } 197 198 ia->ia_nirq = 1; 199 ia->ia_irq[0].ir_irq = irq; 200 201 rv = 1; 202 203 out: 204 if (have_io) 205 bus_space_unmap(iot, ioh, CS8900_IOSIZE); 206 if (have_mem) 207 bus_space_unmap(memt, memh, CS8900_MEMSIZE); 208 209 return (rv); 210 } 211 212 void 213 cs_isa_attach(device_t parent, device_t self, void *aux) 214 { 215 struct cs_softc_isa *isc = device_private(self); 216 struct cs_softc *sc = &isc->sc_cs; 217 struct isa_attach_args *ia = aux; 218 219 sc->sc_dev = self; 220 isc->sc_ic = ia->ia_ic; 221 sc->sc_iot = ia->ia_iot; 222 sc->sc_memt = ia->ia_memt; 223 224 if (ia->ia_ndrq > 0) 225 isc->sc_drq = ia->ia_drq[0].ir_drq; 226 else 227 isc->sc_drq = -1; 228 229 sc->sc_irq = ia->ia_irq[0].ir_irq; 230 231 printf("\n"); 232 233 /* 234 * Map the device. 235 */ 236 if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, CS8900_IOSIZE, 237 0, &sc->sc_ioh)) { 238 aprint_error_dev(self, "unable to map i/o space\n"); 239 return; 240 } 241 242 /* 243 * Validate IRQ. 244 */ 245 if (CS8900_IRQ_ISVALID(sc->sc_irq) == 0) { 246 aprint_error_dev(self, "invalid IRQ %d\n", sc->sc_irq); 247 return; 248 } 249 250 /* 251 * Map the memory space if it was specified. If we can do this, 252 * we set ourselves up to use memory mode forever. Otherwise, 253 * we fall back on I/O mode. 254 */ 255 if (ia->ia_iomem[0].ir_addr != ISA_UNKNOWN_IOMEM && 256 ia->ia_iomem[0].ir_size == CS8900_MEMSIZE && 257 CS8900_MEMBASE_ISVALID(ia->ia_iomem[0].ir_addr)) { 258 if (bus_space_map(sc->sc_memt, ia->ia_iomem[0].ir_addr, 259 CS8900_MEMSIZE, 0, &sc->sc_memh)) { 260 aprint_error_dev(self, "unable to map memory space\n"); 261 } else { 262 sc->sc_cfgflags |= CFGFLG_MEM_MODE; 263 sc->sc_pktpgaddr = ia->ia_iomem[0].ir_addr; 264 } 265 } 266 267 sc->sc_ih = isa_intr_establish(ia->ia_ic, sc->sc_irq, IST_EDGE, 268 IPL_NET, cs_intr, sc); 269 if (sc->sc_ih == NULL) { 270 aprint_error_dev(self, "unable to establish interrupt\n"); 271 return; 272 } 273 274 sc->sc_dma_chipinit = cs_isa_dma_chipinit; 275 sc->sc_dma_attach = cs_isa_dma_attach; 276 sc->sc_dma_process_rx = cs_process_rx_dma; 277 278 cs_attach(sc, NULL, NULL, 0, 0); 279 } 280