if_sm_isa.c revision 1.20
1 /* $NetBSD: if_sm_isa.c,v 1.20 2008/04/28 20:23:52 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: if_sm_isa.c,v 1.20 2008/04/28 20:23:52 martin Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/mbuf.h> 39 #include <sys/socket.h> 40 #include <sys/ioctl.h> 41 #include <sys/errno.h> 42 #include <sys/syslog.h> 43 #include <sys/select.h> 44 #include <sys/device.h> 45 46 #include <net/if.h> 47 #include <net/if_dl.h> 48 #include <net/if_ether.h> 49 #include <net/if_media.h> 50 51 #include <sys/intr.h> 52 #include <sys/bus.h> 53 54 #include <dev/mii/mii.h> 55 #include <dev/mii/miivar.h> 56 57 #include <dev/ic/smc91cxxreg.h> 58 #include <dev/ic/smc91cxxvar.h> 59 60 #include <dev/isa/isavar.h> 61 62 int sm_isa_match(struct device *, struct cfdata *, void *); 63 void sm_isa_attach(struct device *, struct device *, void *); 64 65 struct sm_isa_softc { 66 struct smc91cxx_softc sc_smc; /* real "smc" softc */ 67 68 /* ISA-specific goo. */ 69 void *sc_ih; /* interrupt cookie */ 70 }; 71 72 CFATTACH_DECL(sm_isa, sizeof(struct sm_isa_softc), 73 sm_isa_match, sm_isa_attach, NULL, NULL); 74 75 int 76 sm_isa_match(struct device *parent, struct cfdata *match, 77 void *aux) 78 { 79 struct isa_attach_args *ia = aux; 80 bus_space_tag_t iot = ia->ia_iot; 81 bus_space_handle_t ioh; 82 u_int16_t tmp; 83 int rv = 0; 84 extern const char *smc91cxx_idstrs[]; 85 86 if (ia->ia_nio < 1) 87 return (0); 88 if (ia->ia_nirq < 1) 89 return (0); 90 91 if (ISA_DIRECT_CONFIG(ia)) 92 return (0); 93 94 /* Disallow wildcarded values. */ 95 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 96 return (0); 97 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 98 return (0); 99 100 /* Map i/o space. */ 101 if (bus_space_map(iot, ia->ia_io[0].ir_addr, SMC_IOSIZE, 0, &ioh)) 102 return (0); 103 104 /* Check that high byte of BANK_SELECT is what we expect. */ 105 tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W); 106 if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE) 107 goto out; 108 109 /* 110 * Switch to bank 0 and perform the test again. 111 * XXX INVASIVE! 112 */ 113 bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 0); 114 tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W); 115 if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE) 116 goto out; 117 118 /* 119 * Switch to bank 1 and check the base address register. 120 * XXX INVASIVE! 121 */ 122 bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 1); 123 tmp = bus_space_read_2(iot, ioh, BASE_ADDR_REG_W); 124 if (ia->ia_io[0].ir_addr != ((tmp >> 3) & 0x3e0)) 125 goto out; 126 127 /* 128 * Check for a recognized chip id. 129 * XXX INVASIVE! 130 */ 131 bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 3); 132 tmp = bus_space_read_2(iot, ioh, REVISION_REG_W); 133 if (smc91cxx_idstrs[RR_ID(tmp)] == NULL) 134 goto out; 135 136 /* 137 * Assume we have an SMC91Cxx. 138 */ 139 ia->ia_nio = 1; 140 ia->ia_io[0].ir_size = SMC_IOSIZE; 141 142 ia->ia_nirq = 1; 143 144 ia->ia_niomem = 0; 145 ia->ia_ndrq = 0; 146 147 rv = 1; 148 149 out: 150 bus_space_unmap(iot, ioh, SMC_IOSIZE); 151 return (rv); 152 } 153 154 void 155 sm_isa_attach(struct device *parent, struct device *self, void *aux) 156 { 157 struct sm_isa_softc *isc = (struct sm_isa_softc *)self; 158 struct smc91cxx_softc *sc = &isc->sc_smc; 159 struct isa_attach_args *ia = aux; 160 bus_space_tag_t iot = ia->ia_iot; 161 bus_space_handle_t ioh; 162 163 printf("\n"); 164 165 /* Map i/o space. */ 166 if (bus_space_map(iot, ia->ia_io[0].ir_addr, SMC_IOSIZE, 0, &ioh)) 167 panic("sm_isa_attach: can't map i/o space"); 168 169 sc->sc_bst = iot; 170 sc->sc_bsh = ioh; 171 172 /* should always be enabled */ 173 sc->sc_flags |= SMC_FLAGS_ENABLED; 174 175 /* XXX Should get Ethernet address from EEPROM!! */ 176 177 /* Perform generic intialization. */ 178 smc91cxx_attach(sc, NULL); 179 180 /* Establish the interrupt handler. */ 181 isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 182 IST_EDGE, IPL_NET, smc91cxx_intr, sc); 183 if (isc->sc_ih == NULL) 184 aprint_error_dev(&sc->sc_dev, "couldn't establish interrupt handler\n"); 185 } 186
Indexes created Sat Oct 11 19:10:01 GMT 2025