1 /* $NetBSD: if_sm_isa.c,v 1.24 2018/02/08 09:05:19 dholland 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 1.24 2018/02/08 09:05:19 dholland 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(device_t, cfdata_t, void *); 63 void sm_isa_attach(device_t, device_t, 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_NEW(sm_isa, sizeof(struct sm_isa_softc), 73 sm_isa_match, sm_isa_attach, NULL, NULL); 74 75 int 76 sm_isa_match(device_t parent, cfdata_t match, void *aux) 77 { 78 struct isa_attach_args *ia = aux; 79 bus_space_tag_t iot = ia->ia_iot; 80 bus_space_handle_t ioh; 81 u_int16_t tmp; 82 int rv = 0; 83 extern const char *smc91cxx_idstrs[]; 84 85 if (ia->ia_nio < 1) 86 return (0); 87 if (ia->ia_nirq < 1) 88 return (0); 89 90 if (ISA_DIRECT_CONFIG(ia)) 91 return (0); 92 93 /* Disallow wildcarded values. */ 94 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 95 return (0); 96 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 97 return (0); 98 99 /* Map i/o space. */ 100 if (bus_space_map(iot, ia->ia_io[0].ir_addr, SMC_IOSIZE, 0, &ioh)) 101 return (0); 102 103 /* Check that high byte of BANK_SELECT is what we expect. */ 104 tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W); 105 if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE) 106 goto out; 107 108 /* 109 * Switch to bank 0 and perform the test again. 110 * XXX INVASIVE! 111 */ 112 bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 0); 113 tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W); 114 if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE) 115 goto out; 116 117 /* 118 * Switch to bank 1 and check the base address register. 119 * XXX INVASIVE! 120 */ 121 bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 1); 122 tmp = bus_space_read_2(iot, ioh, BASE_ADDR_REG_W); 123 if (ia->ia_io[0].ir_addr != ((tmp >> 3) & 0x3e0)) 124 goto out; 125 126 /* 127 * Check for a recognized chip id. 128 * XXX INVASIVE! 129 */ 130 bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 3); 131 tmp = bus_space_read_2(iot, ioh, REVISION_REG_W); 132 if (smc91cxx_idstrs[RR_ID(tmp)] == NULL) 133 goto out; 134 135 /* 136 * Assume we have an SMC91Cxx. 137 */ 138 ia->ia_nio = 1; 139 ia->ia_io[0].ir_size = SMC_IOSIZE; 140 141 ia->ia_nirq = 1; 142 143 ia->ia_niomem = 0; 144 ia->ia_ndrq = 0; 145 146 rv = 1; 147 148 out: 149 bus_space_unmap(iot, ioh, SMC_IOSIZE); 150 return (rv); 151 } 152 153 void 154 sm_isa_attach(device_t parent, device_t self, void *aux) 155 { 156 struct sm_isa_softc *isc = device_private(self); 157 struct smc91cxx_softc *sc = &isc->sc_smc; 158 struct isa_attach_args *ia = aux; 159 bus_space_tag_t iot = ia->ia_iot; 160 bus_space_handle_t ioh; 161 162 printf("\n"); 163 164 /* Map i/o space. */ 165 if (bus_space_map(iot, ia->ia_io[0].ir_addr, SMC_IOSIZE, 0, &ioh)) 166 panic("sm_isa_attach: can't map i/o space"); 167 168 sc->sc_dev = self; 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 initialization. */ 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(self, "couldn't establish interrupt handler\n"); 185 } 186
Indexes created Sat Sep 20 22:09:52 GMT 2025