1 /* $OpenBSD: if_atw_pci.c,v 1.20 2024/05/24 06:02:53 jsg Exp $ */ 2 /* $NetBSD: if_atw_pci.c,v 1.7 2004/07/23 07:07:55 dyoung Exp $ */ 3 4 /*- 5 * Copyright (c) 1998, 1999, 2000, 2002 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center; Charles M. Hannum; and David Young. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * PCI bus front-end for the ADMtek ADM8211 802.11 MAC/BBP chip. 36 * 37 * Derived from the ``Tulip'' PCI bus front-end. 38 */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 44 #include <net/if.h> 45 #include <net/if_media.h> 46 #include <netinet/in.h> 47 #include <netinet/if_ether.h> 48 49 #include <net80211/ieee80211_radiotap.h> 50 #include <net80211/ieee80211_var.h> 51 52 #include <machine/bus.h> 53 #include <machine/intr.h> 54 55 #include <dev/ic/atwreg.h> 56 #include <dev/ic/atwvar.h> 57 58 #include <dev/pci/pcivar.h> 59 #include <dev/pci/pcireg.h> 60 #include <dev/pci/pcidevs.h> 61 62 /* 63 * PCI configuration space registers used by the ADM8211. 64 */ 65 #define ATW_PCI_IOBA 0x10 /* i/o mapped base */ 66 #define ATW_PCI_MMBA 0x14 /* memory mapped base */ 67 68 struct atw_pci_softc { 69 struct atw_softc psc_atw; /* real ADM8211 softc */ 70 71 pci_intr_handle_t psc_ih; /* interrupt handle */ 72 void *psc_intrcookie; 73 74 pci_chipset_tag_t psc_pc; /* our PCI chipset */ 75 pcitag_t psc_pcitag; /* our PCI tag */ 76 }; 77 78 int atw_pci_match(struct device *, void *, void *); 79 void atw_pci_attach(struct device *, struct device *, void *); 80 int atw_pci_detach(struct device *, int); 81 82 const struct cfattach atw_pci_ca = { 83 sizeof (struct atw_softc), atw_pci_match, atw_pci_attach, atw_pci_detach, 84 atw_activate 85 }; 86 87 const struct pci_matchid atw_pci_devices[] = { 88 { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211 }, 89 { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRSHPW796 } 90 }; 91 92 int 93 atw_pci_match(struct device *parent, void *match, void *aux) 94 { 95 return (pci_matchbyid((struct pci_attach_args *)aux, atw_pci_devices, 96 nitems(atw_pci_devices))); 97 } 98 99 static int 100 atw_pci_enable(struct atw_softc *sc) 101 { 102 struct atw_pci_softc *psc = (void *)sc; 103 104 /* Establish the interrupt. */ 105 psc->psc_intrcookie = pci_intr_establish(psc->psc_pc, psc->psc_ih, 106 IPL_NET, atw_intr, sc, sc->sc_dev.dv_xname); 107 if (psc->psc_intrcookie == NULL) { 108 printf("%s: unable to establish interrupt\n", 109 sc->sc_dev.dv_xname); 110 return (1); 111 } 112 113 return (0); 114 } 115 116 static void 117 atw_pci_disable(struct atw_softc *sc) 118 { 119 struct atw_pci_softc *psc = (void *)sc; 120 121 /* Unhook the interrupt handler. */ 122 pci_intr_disestablish(psc->psc_pc, psc->psc_intrcookie); 123 psc->psc_intrcookie = NULL; 124 } 125 126 void 127 atw_pci_attach(struct device *parent, struct device *self, void *aux) 128 { 129 struct atw_pci_softc *psc = (void *) self; 130 struct atw_softc *sc = &psc->psc_atw; 131 struct pci_attach_args *pa = aux; 132 pci_chipset_tag_t pc = pa->pa_pc; 133 const char *intrstr = NULL; 134 bus_space_tag_t iot, memt; 135 bus_space_handle_t ioh, memh; 136 bus_size_t iosize, memsize; 137 int ioh_valid, memh_valid; 138 139 psc->psc_pc = pa->pa_pc; 140 psc->psc_pcitag = pa->pa_tag; 141 142 /* 143 * No power management hooks. 144 * XXX Maybe we should add some! 145 */ 146 sc->sc_flags |= ATWF_ENABLED; 147 148 /* 149 * Get revision info, and set some chip-specific variables. 150 */ 151 sc->sc_rev = PCI_REVISION(pa->pa_class); 152 153 /* 154 * Check to see if the device is in power-save mode, and 155 * being it out if necessary. 156 * 157 * XXX This code comes almost verbatim from if_tlp_pci.c. I do 158 * not understand it. Tulip clears the "sleep mode" bit in the 159 * CFDA register, first. There is an equivalent (?) register at the 160 * same place in the ADM8211, but the docs do not assign its bits 161 * any meanings. -dcy 162 */ 163 pci_set_powerstate(pc, pa->pa_tag, PCI_PMCSR_STATE_D0); 164 165 /* 166 * Map the device. 167 */ 168 ioh_valid = (pci_mapreg_map(pa, ATW_PCI_IOBA, 169 PCI_MAPREG_TYPE_IO, 0, 170 &iot, &ioh, NULL, &iosize, 0) == 0); 171 memh_valid = (pci_mapreg_map(pa, ATW_PCI_MMBA, 172 PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0, 173 &memt, &memh, NULL, &memsize, 0) == 0); 174 175 if (memh_valid) { 176 sc->sc_st = memt; 177 sc->sc_sh = memh; 178 sc->sc_mapsize = memsize; 179 } else if (ioh_valid) { 180 sc->sc_st = iot; 181 sc->sc_sh = ioh; 182 sc->sc_mapsize = iosize; 183 } else { 184 printf(": unable to map device registers\n"); 185 return; 186 } 187 188 sc->sc_dmat = pa->pa_dmat; 189 190 /* 191 * Get the cacheline size. 192 */ 193 sc->sc_cacheline = PCI_CACHELINE(pci_conf_read(pc, pa->pa_tag, 194 PCI_BHLC_REG)); 195 196 /* 197 * Get PCI data moving command info. 198 */ 199 if (pa->pa_flags & PCI_FLAGS_MRL_OKAY) /* read line */ 200 sc->sc_flags |= ATWF_MRL; 201 if (pa->pa_flags & PCI_FLAGS_MRM_OKAY) /* read multiple */ 202 sc->sc_flags |= ATWF_MRM; 203 if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) /* write invalidate */ 204 sc->sc_flags |= ATWF_MWI; 205 206 /* 207 * Map and establish our interrupt. 208 */ 209 if (pci_intr_map(pa, &psc->psc_ih)) { 210 printf(": unable to map interrupt\n"); 211 return; 212 } 213 intrstr = pci_intr_string(pc, psc->psc_ih); 214 psc->psc_intrcookie = pci_intr_establish(pc, psc->psc_ih, IPL_NET, 215 atw_intr, sc, sc->sc_dev.dv_xname); 216 if (psc->psc_intrcookie == NULL) { 217 printf(": unable to establish interrupt"); 218 if (intrstr != NULL) 219 printf(" at %s", intrstr); 220 printf("\n"); 221 return; 222 } 223 224 printf(": %s\n", intrstr); 225 226 sc->sc_enable = atw_pci_enable; 227 sc->sc_disable = atw_pci_disable; 228 229 /* 230 * Finish off the attach. 231 */ 232 atw_attach(sc); 233 } 234 235 int 236 atw_pci_detach(struct device *self, int flags) 237 { 238 struct atw_pci_softc *psc = (void *)self; 239 struct atw_softc *sc = &psc->psc_atw; 240 int rv; 241 242 rv = atw_detach(sc); 243 if (rv) 244 return (rv); 245 246 if (psc->psc_intrcookie != NULL) 247 pci_intr_disestablish(psc->psc_pc, psc->psc_intrcookie); 248 249 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_mapsize); 250 251 return (0); 252 } 253