1 /* $NetBSD: if_fmv_isa.c,v 1.8 2006/10/12 01:31:16 christos 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 1.8 2006/10/12 01:31:16 christos 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(struct device *, struct cfdata *, void *); 56 void fmv_isa_attach(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 uint8_t port; /* Offset from the base I/O address. */ 70 uint8_t mask; /* Bits to be checked. */ 71 uint8_t bits; /* Values to be compared against. */ 72 }; 73 74 static inline int fe_simple_probe(bus_space_tag_t, bus_space_handle_t, 75 struct fe_simple_probe_struct const *); 76 static int fmv_find(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 #ifdef FMV_DEBUG 85 #define DPRINTF printf 86 #else 87 #define DPRINTF while (/* CONSTCOND */0) printf 88 #endif 89 90 /* 91 * Hardware probe routines. 92 */ 93 94 /* 95 * Determine if the device is present. 96 */ 97 int 98 fmv_isa_match(struct device *parent __unused, struct cfdata *match __unused, 99 void *aux) 100 { 101 struct isa_attach_args *ia = aux; 102 bus_space_tag_t iot = ia->ia_iot; 103 bus_space_handle_t ioh; 104 int i, iobase, irq, rv = 0; 105 uint8_t myea[ETHER_ADDR_LEN]; 106 107 if (ia->ia_nio < 1) 108 return 0; 109 if (ia->ia_nirq < 1) 110 return 0; 111 112 if (ISA_DIRECT_CONFIG(ia)) 113 return 0; 114 115 /* Disallow wildcarded values. */ 116 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 117 return 0; 118 119 /* 120 * See if the sepcified address is valid for FMV-180 series. 121 */ 122 for (i = 0; i < NFMV_IOMAP; i++) 123 if (fmv_iomap[i] == ia->ia_io[0].ir_addr) 124 break; 125 if (i == NFMV_IOMAP) { 126 DPRINTF("fmv_match: unknown iobase 0x%x\n", 127 ia->ia_io[0].ir_addr); 128 return 0; 129 } 130 131 /* Map i/o space. */ 132 if (bus_space_map(iot, ia->ia_io[0].ir_addr, FMV_NPORTS, 0, &ioh)) { 133 DPRINTF("fmv_match: couldn't map iospace 0x%x\n", 134 ia->ia_io[0].ir_addr); 135 return 0; 136 } 137 138 if (fmv_find(iot, ioh, &iobase, &irq) == 0) { 139 DPRINTF("fmv_match: fmv_find failed\n"); 140 goto out; 141 } 142 143 if (iobase != ia->ia_io[0].ir_addr) { 144 DPRINTF("fmv_match: unexpected iobase in board: 0x%x\n", 145 iobase); 146 goto out; 147 } 148 149 if (fmv_detect(iot, ioh, myea) == 0) { /* XXX necessary? */ 150 DPRINTF("fmv_match: fmv_detect failed\n"); 151 goto out; 152 } 153 154 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ) { 155 if (ia->ia_irq[0].ir_irq != irq) { 156 printf("fmv_match: irq mismatch; " 157 "kernel configured %d != board configured %d\n", 158 ia->ia_irq[0].ir_irq, irq); 159 goto out; 160 } 161 } else 162 ia->ia_irq[0].ir_irq = irq; 163 164 ia->ia_nio = 1; 165 ia->ia_io[0].ir_size = FMV_NPORTS; 166 167 ia->ia_nirq = 1; 168 169 ia->ia_niomem = 0; 170 ia->ia_ndrq = 0; 171 172 rv = 1; 173 174 out: 175 bus_space_unmap(iot, ioh, FMV_NPORTS); 176 return rv; 177 } 178 179 /* 180 * Check for specific bits in specific registers have specific values. 181 */ 182 static inline int 183 fe_simple_probe(bus_space_tag_t iot, bus_space_handle_t ioh, 184 struct fe_simple_probe_struct const *sp) 185 { 186 uint8_t val; 187 struct fe_simple_probe_struct const *p; 188 189 for (p = sp; p->mask != 0; p++) { 190 val = bus_space_read_1(iot, ioh, p->port); 191 if ((val & p->mask) != p->bits) { 192 DPRINTF("fe_simple_probe: %x & %x != %x\n", 193 val, p->mask, p->bits); 194 return 0; 195 } 196 } 197 198 return 1; 199 } 200 201 /* 202 * Hardware (vendor) specific probe routines. 203 */ 204 205 /* 206 * Probe Fujitsu FMV-180 series boards and get iobase and irq from 207 * board. 208 */ 209 static int 210 fmv_find(bus_space_tag_t iot, bus_space_handle_t ioh, int *iobase, int *irq) 211 { 212 uint8_t config; 213 static int const fmv_irqmap[4] = { 3, 7, 10, 15 }; 214 static struct fe_simple_probe_struct const probe_table[] = { 215 { FE_DLCR2, 0x70, 0x00 }, 216 { FE_DLCR4, 0x08, 0x00 }, 217 /* { FE_DLCR5, 0x80, 0x00 }, Doesn't work. */ 218 219 { FE_FMV0, FE_FMV0_MAGIC_MASK, FE_FMV0_MAGIC_VALUE }, 220 { FE_FMV1, FE_FMV1_MAGIC_MASK, FE_FMV1_MAGIC_VALUE }, 221 { FE_FMV3, FE_FMV3_EXTRA_MASK, FE_FMV3_EXTRA_VALUE }, 222 #if 1 223 /* 224 * Test *vendor* part of the station address for Fujitsu. 225 * The test will gain reliability of probe process, but 226 * it rejects FMV-180 clone boards manufactured by other vendors. 227 * We have to turn the test off when such cards are made available. 228 */ 229 { FE_FMV4, 0xFF, 0x00 }, 230 { FE_FMV5, 0xFF, 0x00 }, 231 { FE_FMV6, 0xFF, 0x0E }, 232 #else 233 /* 234 * We can always verify the *first* 2 bits (in Ehternet 235 * bit order) are "no multicast" and "no local" even for 236 * unknown vendors. 237 */ 238 { FE_FMV4, 0x03, 0x00 }, 239 #endif 240 { 0, 0x00, 0x00 }, 241 }; 242 243 /* Simple probe. */ 244 if (fe_simple_probe(iot, ioh, probe_table) != 0) 245 return 0; 246 247 /* Check if our I/O address matches config info on EEPROM. */ 248 config = bus_space_read_1(iot, ioh, FE_FMV2); 249 *iobase = fmv_iomap[(config & FE_FMV2_ADDR) >> FE_FMV2_ADDR_SHIFT]; 250 251 /* 252 * Determine which IRQ to be used. 253 * 254 * In this version, we always get an IRQ assignment from the 255 * FMV-180's configuration EEPROM, ignoring that specified in 256 * config file. 257 */ 258 *irq = fmv_irqmap[(config & FE_FMV2_IRQ) >> FE_FMV2_IRQ_SHIFT]; 259 260 return 1; 261 } 262 263 void 264 fmv_isa_attach(struct device *parent __unused, struct device *self __unused, 265 void *aux) 266 { 267 struct fmv_isa_softc *isc = (struct fmv_isa_softc *)self; 268 struct mb86960_softc *sc = &isc->sc_mb86960; 269 struct isa_attach_args *ia = aux; 270 bus_space_tag_t iot = ia->ia_iot; 271 bus_space_handle_t ioh; 272 273 /* Map i/o space. */ 274 if (bus_space_map(iot, ia->ia_io[0].ir_addr, FMV_NPORTS, 0, &ioh)) { 275 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 276 return; 277 } 278 279 sc->sc_bst = iot; 280 sc->sc_bsh = ioh; 281 282 fmv_attach(sc); 283 284 /* Establish the interrupt handler. */ 285 isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 286 IST_EDGE, IPL_NET, mb86960_intr, sc); 287 if (isc->sc_ih == NULL) 288 printf("%s: couldn't establish interrupt handler\n", 289 sc->sc_dev.dv_xname); 290 } 291