1 /* $NetBSD: if_fmv_isa.c,v 1.2 2002/10/05 17:52:32 tsutsui Exp $ */ 2 3 /* 4 * All Rights Reserved, Copyright (C) Fujitsu Limited 1995 5 * 6 * This software may be used, modified, copied, distributed, and sold, in 7 * both source and binary form provided that the above copyright, these 8 * terms and the following disclaimer are retained. The name of the author 9 * and/or the contributor may not be used to endorse or promote products 10 * derived from this software without specific prior written permission. 11 * 12 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND THE CONTRIBUTOR ``AS IS'' AND 13 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 14 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 15 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE CONTRIBUTOR BE LIABLE 16 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 17 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 18 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION. 19 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 20 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 21 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 22 * SUCH DAMAGE. 23 */ 24 25 /* 26 * Portions copyright (C) 1993, David Greenman. This software may be used, 27 * modified, copied, distributed, and sold, in both source and binary form 28 * provided that the above copyright and these terms are retained. Under no 29 * circumstances is the author responsible for the proper functioning of this 30 * software, nor does the author assume any responsibility for damages 31 * incurred with its use. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: if_fmv_isa.c,v 1.2 2002/10/05 17:52:32 tsutsui Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.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/ic/mb86960reg.h> 49 #include <dev/ic/mb86960var.h> 50 #include <dev/ic/fmvreg.h> 51 #include <dev/ic/fmvvar.h> 52 53 #include <dev/isa/isavar.h> 54 55 int fmv_isa_match __P((struct device *, struct cfdata *, void *)); 56 void fmv_isa_attach __P((struct device *, struct device *, void *)); 57 58 struct fmv_isa_softc { 59 struct mb86960_softc sc_mb86960; /* real "mb86960" softc */ 60 61 /* ISA-specific goo. */ 62 void *sc_ih; /* interrupt cookie */ 63 }; 64 65 CFATTACH_DECL(fmv_isa, sizeof(struct fmv_isa_softc), 66 fmv_isa_match, fmv_isa_attach, NULL, NULL); 67 68 struct fe_simple_probe_struct { 69 u_int8_t port; /* Offset from the base I/O address. */ 70 u_int8_t mask; /* Bits to be checked. */ 71 u_int8_t bits; /* Values to be compared against. */ 72 }; 73 74 static __inline__ int fe_simple_probe __P((bus_space_tag_t, 75 bus_space_handle_t, struct fe_simple_probe_struct const *)); 76 static int fmv_find __P((bus_space_tag_t, bus_space_handle_t, int *, int *)); 77 78 static int const fmv_iomap[8] = { 79 0x220, 0x240, 0x260, 0x280, 0x2A0, 0x2C0, 0x300, 0x340 80 }; 81 #define NFMV_IOMAP (sizeof (fmv_iomap) / sizeof (fmv_iomap[0])) 82 #define FMV_NPORTS 0x20 83 84 /* 85 * Hardware probe routines. 86 */ 87 88 /* 89 * Determine if the device is present. 90 */ 91 int 92 fmv_isa_match(parent, match, aux) 93 struct device *parent; 94 struct cfdata *match; 95 void *aux; 96 { 97 struct isa_attach_args *ia = aux; 98 bus_space_tag_t iot = ia->ia_iot; 99 bus_space_handle_t ioh; 100 int i, iobase, irq, rv = 0; 101 u_int8_t myea[ETHER_ADDR_LEN]; 102 103 if (ia->ia_nio < 1) 104 return (0); 105 if (ia->ia_nirq < 1) 106 return (0); 107 108 if (ISA_DIRECT_CONFIG(ia)) 109 return (0); 110 111 /* Disallow wildcarded values. */ 112 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 113 return (0); 114 115 /* 116 * See if the sepcified address is valid for FMV-180 series. 117 */ 118 for (i = 0; i < NFMV_IOMAP; i++) 119 if (fmv_iomap[i] == ia->ia_io[0].ir_addr) 120 break; 121 if (i == NFMV_IOMAP) { 122 #ifdef FMV_DEBUG 123 printf("fmv_match: unknown iobase 0x%x\n", 124 ia->ia_io[0].ir_addr); 125 #endif 126 return (0); 127 } 128 129 /* Map i/o space. */ 130 if (bus_space_map(iot, ia->ia_io[0].ir_addr, FMV_NPORTS, 0, &ioh)) { 131 #ifdef FMV_DEBUG 132 printf("fmv_match: couldn't map iospace 0x%x\n", 133 ia->ia_io[0].ir_addr); 134 #endif 135 return (0); 136 } 137 138 if (fmv_find(iot, ioh, &iobase, &irq) == 0) { 139 #ifdef FMV_DEBUG 140 printf("fmv_match: fmv_find failed\n"); 141 #endif 142 goto out; 143 } 144 145 if (iobase != ia->ia_io[0].ir_addr) { 146 #ifdef FMV_DEBUG 147 printf("fmv_match: unexpected iobase in board: 0x%x\n", 148 iobase); 149 #endif 150 goto out; 151 } 152 153 if (fmv_detect(iot, ioh, myea) == 0) { /* XXX necessary? */ 154 #ifdef FMV_DEBUG 155 printf("fmv_match: fmv_detect failed\n"); 156 #endif 157 goto out; 158 } 159 160 if (ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT) { 161 if (ia->ia_irq[0].ir_irq != irq) { 162 printf("fmv_match: irq mismatch; " 163 "kernel configured %d != board configured %d\n", 164 ia->ia_irq[0].ir_irq, irq); 165 goto out; 166 } 167 } else 168 ia->ia_irq[0].ir_irq = irq; 169 170 ia->ia_nio = 1; 171 ia->ia_io[0].ir_size = FMV_NPORTS; 172 173 ia->ia_nirq = 1; 174 175 ia->ia_niomem = 0; 176 ia->ia_ndrq = 0; 177 178 rv = 1; 179 180 out: 181 bus_space_unmap(iot, ioh, FMV_NPORTS); 182 return (rv); 183 } 184 185 /* 186 * Check for specific bits in specific registers have specific values. 187 */ 188 static __inline__ int 189 fe_simple_probe (iot, ioh, sp) 190 bus_space_tag_t iot; 191 bus_space_handle_t ioh; 192 struct fe_simple_probe_struct const *sp; 193 { 194 u_int8_t val; 195 struct fe_simple_probe_struct const *p; 196 197 for (p = sp; p->mask != 0; p++) { 198 val = bus_space_read_1(iot, ioh, p->port); 199 if ((val & p->mask) != p->bits) { 200 #ifdef FMV_DEBUG 201 printf("fe_simple_probe: %x & %x != %x\n", 202 val, p->mask, p->bits); 203 #endif 204 return (0); 205 } 206 } 207 208 return (1); 209 } 210 211 /* 212 * Hardware (vendor) specific probe routines. 213 */ 214 215 /* 216 * Probe Fujitsu FMV-180 series boards and get iobase and irq from 217 * board. 218 */ 219 static int 220 fmv_find(iot, ioh, iobase, irq) 221 bus_space_tag_t iot; 222 bus_space_handle_t ioh; 223 int *iobase, *irq; 224 { 225 u_int8_t config; 226 static int const fmv_irqmap[4] = { 3, 7, 10, 15 }; 227 static struct fe_simple_probe_struct const probe_table[] = { 228 { FE_DLCR2, 0x70, 0x00 }, 229 { FE_DLCR4, 0x08, 0x00 }, 230 /* { FE_DLCR5, 0x80, 0x00 }, Doesn't work. */ 231 232 { FE_FMV0, FE_FMV0_MAGIC_MASK, FE_FMV0_MAGIC_VALUE }, 233 { FE_FMV1, FE_FMV1_MAGIC_MASK, FE_FMV1_MAGIC_VALUE }, 234 { FE_FMV3, FE_FMV3_EXTRA_MASK, FE_FMV3_EXTRA_VALUE }, 235 #if 1 236 /* 237 * Test *vendor* part of the station address for Fujitsu. 238 * The test will gain reliability of probe process, but 239 * it rejects FMV-180 clone boards manufactured by other vendors. 240 * We have to turn the test off when such cards are made available. 241 */ 242 { FE_FMV4, 0xFF, 0x00 }, 243 { FE_FMV5, 0xFF, 0x00 }, 244 { FE_FMV6, 0xFF, 0x0E }, 245 #else 246 /* 247 * We can always verify the *first* 2 bits (in Ehternet 248 * bit order) are "no multicast" and "no local" even for 249 * unknown vendors. 250 */ 251 { FE_FMV4, 0x03, 0x00 }, 252 #endif 253 { 0 } 254 }; 255 256 /* Simple probe. */ 257 if (!fe_simple_probe(iot, ioh, probe_table)) 258 return (0); 259 260 /* Check if our I/O address matches config info on EEPROM. */ 261 config = bus_space_read_1(iot, ioh, FE_FMV2); 262 *iobase = fmv_iomap[(config & FE_FMV2_ADDR) >> FE_FMV2_ADDR_SHIFT]; 263 264 /* 265 * Determine which IRQ to be used. 266 * 267 * In this version, we always get an IRQ assignment from the 268 * FMV-180's configuration EEPROM, ignoring that specified in 269 * config file. 270 */ 271 *irq = fmv_irqmap[(config & FE_FMV2_IRQ) >> FE_FMV2_IRQ_SHIFT]; 272 273 return (1); 274 } 275 276 void 277 fmv_isa_attach(parent, self, aux) 278 struct device *parent, *self; 279 void *aux; 280 { 281 struct fmv_isa_softc *isc = (struct fmv_isa_softc *)self; 282 struct mb86960_softc *sc = &isc->sc_mb86960; 283 struct isa_attach_args *ia = aux; 284 bus_space_tag_t iot = ia->ia_iot; 285 bus_space_handle_t ioh; 286 287 /* Map i/o space. */ 288 if (bus_space_map(iot, ia->ia_io[0].ir_addr, FMV_NPORTS, 0, &ioh)) { 289 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 290 return; 291 } 292 293 sc->sc_bst = iot; 294 sc->sc_bsh = ioh; 295 296 fmv_attach(sc); 297 298 /* Establish the interrupt handler. */ 299 isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 300 IST_EDGE, IPL_NET, mb86960_intr, sc); 301 if (isc->sc_ih == NULL) 302 printf("%s: couldn't establish interrupt handler\n", 303 sc->sc_dev.dv_xname); 304 } 305