1 /* $NetBSD: if_fmv_isa.c,v 1.14 2026/02/03 21:34:56 andvar 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 1.14 2026/02/03 21:34:56 andvar 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 <sys/bus.h> 46 #include <sys/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(device_t, cfdata_t, void *); 56 void fmv_isa_attach(device_t, device_t, 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_NEW(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 const int fmv_iomap[8] = { 79 0x220, 0x240, 0x260, 0x280, 0x2A0, 0x2C0, 0x300, 0x340 80 }; 81 #define NFMV_IOMAP __arraycount(fmv_iomap) 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(device_t parent, cfdata_t cf, void *aux) 99 { 100 struct isa_attach_args *ia = aux; 101 bus_space_tag_t iot = ia->ia_iot; 102 bus_space_handle_t ioh; 103 int i, iobase, irq, rv = 0; 104 uint8_t myea[ETHER_ADDR_LEN]; 105 106 if (ia->ia_nio < 1) 107 return 0; 108 if (ia->ia_nirq < 1) 109 return 0; 110 111 if (ISA_DIRECT_CONFIG(ia)) 112 return 0; 113 114 /* Disallow wildcarded values. */ 115 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 116 return 0; 117 118 /* 119 * See if the specified address is valid for FMV-180 series. 120 */ 121 for (i = 0; i < NFMV_IOMAP; i++) 122 if (fmv_iomap[i] == ia->ia_io[0].ir_addr) 123 break; 124 if (i == NFMV_IOMAP) { 125 DPRINTF("%s: unknown iobase 0x%x\n", 126 __func__, ia->ia_io[0].ir_addr); 127 return 0; 128 } 129 130 /* Map i/o space. */ 131 if (bus_space_map(iot, ia->ia_io[0].ir_addr, FMV_NPORTS, 0, &ioh)) { 132 DPRINTF("%s: couldn't map iospace 0x%x\n", 133 __func__, ia->ia_io[0].ir_addr); 134 return 0; 135 } 136 137 if (fmv_find(iot, ioh, &iobase, &irq) == 0) { 138 DPRINTF("%s: fmv_find failed\n", __func__); 139 goto out; 140 } 141 142 if (iobase != ia->ia_io[0].ir_addr) { 143 DPRINTF("%s: unexpected iobase in board: 0x%x\n", 144 __func__, iobase); 145 goto out; 146 } 147 148 if (fmv_detect(iot, ioh, myea) == 0) { /* XXX necessary? */ 149 DPRINTF("%s: fmv_detect failed\n", __func__); 150 goto out; 151 } 152 153 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ) { 154 if (ia->ia_irq[0].ir_irq != irq) { 155 aprint_error("%s: irq mismatch; " 156 "kernel configured %d != board configured %d\n", 157 __func__, ia->ia_irq[0].ir_irq, irq); 158 goto out; 159 } 160 } else 161 ia->ia_irq[0].ir_irq = irq; 162 163 ia->ia_nio = 1; 164 ia->ia_io[0].ir_size = FMV_NPORTS; 165 166 ia->ia_nirq = 1; 167 168 ia->ia_niomem = 0; 169 ia->ia_ndrq = 0; 170 171 rv = 1; 172 173 out: 174 bus_space_unmap(iot, ioh, FMV_NPORTS); 175 return rv; 176 } 177 178 /* 179 * Check for specific bits in specific registers have specific values. 180 */ 181 static inline int 182 fe_simple_probe(bus_space_tag_t iot, bus_space_handle_t ioh, 183 const struct fe_simple_probe_struct *sp) 184 { 185 uint8_t val; 186 const struct fe_simple_probe_struct *p; 187 188 for (p = sp; p->mask != 0; p++) { 189 val = bus_space_read_1(iot, ioh, p->port); 190 if ((val & p->mask) != p->bits) { 191 DPRINTF("%s: %x & %x != %x\n", 192 __func__, val, p->mask, p->bits); 193 return 0; 194 } 195 } 196 197 return 1; 198 } 199 200 /* 201 * Hardware (vendor) specific probe routines. 202 */ 203 204 /* 205 * Probe Fujitsu FMV-180 series boards and get iobase and irq from 206 * board. 207 */ 208 static int 209 fmv_find(bus_space_tag_t iot, bus_space_handle_t ioh, int *iobase, int *irq) 210 { 211 uint8_t config; 212 static const int fmv_irqmap[4] = { 3, 7, 10, 15 }; 213 static const struct fe_simple_probe_struct probe_table[] = { 214 { FE_DLCR2, 0x70, 0x00 }, 215 { FE_DLCR4, 0x08, 0x00 }, 216 /* { FE_DLCR5, 0x80, 0x00 }, Doesn't work. */ 217 218 { FE_FMV0, FE_FMV0_MAGIC_MASK, FE_FMV0_MAGIC_VALUE }, 219 { FE_FMV1, FE_FMV1_MAGIC_MASK, FE_FMV1_MAGIC_VALUE }, 220 { FE_FMV3, FE_FMV3_EXTRA_MASK, FE_FMV3_EXTRA_VALUE }, 221 #if 1 222 /* 223 * Test *vendor* part of the station address for Fujitsu. 224 * The test will gain reliability of probe process, but 225 * it rejects FMV-180 clone boards manufactured by other vendors. 226 * We have to turn the test off when such cards are made available. 227 */ 228 { FE_FMV4, 0xFF, 0x00 }, 229 { FE_FMV5, 0xFF, 0x00 }, 230 { FE_FMV6, 0xFF, 0x0E }, 231 #else 232 /* 233 * We can always verify the *first* 2 bits (in Ehternet 234 * bit order) are "no multicast" and "no local" even for 235 * unknown vendors. 236 */ 237 { FE_FMV4, 0x03, 0x00 }, 238 #endif 239 { 0, 0x00, 0x00 }, 240 }; 241 242 /* Simple probe. */ 243 if (fe_simple_probe(iot, ioh, probe_table) == 0) 244 return 0; 245 246 /* Check if our I/O address matches config info on EEPROM. */ 247 config = bus_space_read_1(iot, ioh, FE_FMV2); 248 *iobase = fmv_iomap[(config & FE_FMV2_ADDR) >> FE_FMV2_ADDR_SHIFT]; 249 250 /* 251 * Determine which IRQ to be used. 252 * 253 * In this version, we always get an IRQ assignment from the 254 * FMV-180's configuration EEPROM, ignoring that specified in 255 * config file. 256 */ 257 *irq = fmv_irqmap[(config & FE_FMV2_IRQ) >> FE_FMV2_IRQ_SHIFT]; 258 259 return 1; 260 } 261 262 void 263 fmv_isa_attach(device_t parent, device_t self, void *aux) 264 { 265 struct fmv_isa_softc *isc = device_private(self); 266 struct mb86960_softc *sc = &isc->sc_mb86960; 267 struct isa_attach_args *ia = aux; 268 bus_space_tag_t iot = ia->ia_iot; 269 bus_space_handle_t ioh; 270 271 sc->sc_dev = self; 272 273 /* Map i/o space. */ 274 if (bus_space_map(iot, ia->ia_io[0].ir_addr, FMV_NPORTS, 0, &ioh)) { 275 aprint_error(": can't map i/o space\n"); 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 aprint_error_dev(sc->sc_dev, 289 "couldn't establish interrupt handler\n"); 290 } 291
Indexes created Sun Oct 25 00:26:45 UTC 2026