1 /* $NetBSD: sdhc_cardbus.c,v 1.6 2019/11/10 21:16:34 chs Exp $ */ 2 3 /* 4 * Copyright (c) 2010 NONAKA Kimihiro <nonaka (at) netbsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: sdhc_cardbus.c,v 1.6 2019/11/10 21:16:34 chs Exp $"); 30 31 #ifdef _KERNEL_OPT 32 #include "opt_sdmmc.h" 33 #endif 34 35 #include <sys/param.h> 36 #include <sys/device.h> 37 #include <sys/systm.h> 38 #include <sys/malloc.h> 39 #include <sys/pmf.h> 40 41 #include <dev/cardbus/cardbusvar.h> 42 #include <dev/pci/pcidevs.h> 43 44 #include <dev/sdmmc/sdhcreg.h> 45 #include <dev/sdmmc/sdhcvar.h> 46 #include <dev/sdmmc/sdmmcvar.h> 47 48 /* PCI interface classes */ 49 #define SDHC_PCI_INTERFACE_NO_DMA 0x00 50 #define SDHC_PCI_INTERFACE_DMA 0x01 51 #define SDHC_PCI_INTERFACE_VENDOR 0x02 52 53 /* 54 * 8-bit PCI configuration register that tells us how many slots there 55 * are and which BAR entry corresponds to the first slot. 56 */ 57 #define SDHC_PCI_CONF_SLOT_INFO 0x40 58 #define SDHC_PCI_NUM_SLOTS(info) ((((info) >> 4) & 0x7) + 1) 59 #define SDHC_PCI_FIRST_BAR(info) ((info) & 0x7) 60 61 struct sdhc_cardbus_softc { 62 struct sdhc_softc sc; 63 cardbus_chipset_tag_t sc_cc; 64 cardbus_function_tag_t sc_cf; 65 cardbus_devfunc_t sc_ct; 66 pcitag_t sc_tag; 67 bus_space_tag_t sc_iot; /* CardBus I/O space tag */ 68 bus_space_tag_t sc_memt; /* CardBus MEM space tag */ 69 70 void *sc_ih; 71 }; 72 73 static int sdhc_cardbus_match(device_t, cfdata_t, void *); 74 static void sdhc_cardbus_attach(device_t, device_t, void *); 75 static int sdhc_cardbus_detach(device_t, int); 76 77 CFATTACH_DECL_NEW(sdhc_cardbus, sizeof(struct sdhc_cardbus_softc), 78 sdhc_cardbus_match, sdhc_cardbus_attach, sdhc_cardbus_detach, NULL); 79 80 #ifdef SDHC_DEBUG 81 #define DPRINTF(s) printf s 82 #else 83 #define DPRINTF(s) /**/ 84 #endif 85 86 static int 87 sdhc_cardbus_match(device_t parent, cfdata_t cf, void *aux) 88 { 89 struct cardbus_attach_args *ca = aux; 90 91 if (PCI_CLASS(ca->ca_class) == PCI_CLASS_SYSTEM && 92 PCI_SUBCLASS(ca->ca_class) == PCI_SUBCLASS_SYSTEM_SDHC) 93 return 3; 94 95 return 0; 96 } 97 98 static void 99 sdhc_cardbus_attach(device_t parent, device_t self, void *aux) 100 { 101 struct sdhc_cardbus_softc *sc = device_private(self); 102 struct cardbus_attach_args *ca = aux; 103 cardbus_devfunc_t ct = ca->ca_ct; 104 cardbus_chipset_tag_t cc = ct->ct_cc; 105 cardbus_function_tag_t cf = ct->ct_cf; 106 pcireg_t csr; 107 pcireg_t slotinfo; 108 char devinfo[256]; 109 int nslots; 110 bus_space_tag_t iot; 111 bus_space_handle_t ioh; 112 bus_size_t size; 113 114 sc->sc.sc_dev = self; 115 sc->sc.sc_dmat = ca->ca_dmat; 116 sc->sc.sc_host = NULL; 117 118 sc->sc_cc = cc; 119 sc->sc_cf = cf; 120 sc->sc_ct = ct; 121 sc->sc_tag = ca->ca_tag; 122 123 sc->sc_iot = ca->ca_iot; 124 sc->sc_memt = ca->ca_memt; 125 126 pci_devinfo(ca->ca_id, ca->ca_class, 0, devinfo, sizeof(devinfo)); 127 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, 128 PCI_REVISION(ca->ca_class)); 129 aprint_naive("\n"); 130 131 /* 132 * Map and attach all hosts supported by the host controller. 133 */ 134 slotinfo = Cardbus_conf_read(ct, ca->ca_tag, SDHC_PCI_CONF_SLOT_INFO); 135 nslots = SDHC_PCI_NUM_SLOTS(slotinfo); 136 KASSERT(nslots == 1); 137 138 /* Allocate an array big enough to hold all the possible hosts */ 139 sc->sc.sc_host = malloc(sizeof(struct sdhc_host *) * nslots, 140 M_DEVBUF, M_WAITOK | M_ZERO); 141 142 /* Enable the device. */ 143 csr = Cardbus_conf_read(ct, ca->ca_tag, PCI_COMMAND_STATUS_REG); 144 Cardbus_conf_write(ct, ca->ca_tag, PCI_COMMAND_STATUS_REG, 145 csr | PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE); 146 147 /* Establish the interrupt. */ 148 sc->sc_ih = Cardbus_intr_establish(ct, IPL_SDMMC, sdhc_intr, &sc->sc); 149 if (sc->sc_ih == NULL) { 150 aprint_error_dev(self, "couldn't establish interrupt\n"); 151 goto err; 152 } 153 154 /* Enable use of DMA if supported by the interface. */ 155 if ((PCI_INTERFACE(ca->ca_class) == SDHC_PCI_INTERFACE_DMA)) 156 SET(sc->sc.sc_flags, SDHC_FLAG_USE_DMA); 157 158 if (Cardbus_mapreg_map(ct, PCI_MAPREG_START, PCI_MAPREG_TYPE_MEM, 0, 159 &iot, &ioh, NULL, &size)) { 160 aprint_error_dev(self, "couldn't map register\n"); 161 goto err; 162 } 163 164 if (sdhc_host_found(&sc->sc, iot, ioh, size) != 0) { 165 aprint_error_dev(self, "couldn't initialize host\n"); 166 goto err; 167 } 168 169 if (!pmf_device_register1(self, sdhc_suspend, sdhc_resume, 170 sdhc_shutdown)) { 171 aprint_error_dev(self, "couldn't establish powerhook\n"); 172 } 173 174 return; 175 176 err: 177 if (sc->sc_ih != NULL) 178 Cardbus_intr_disestablish(ct, sc->sc_ih); 179 if (sc->sc.sc_host != NULL) 180 free(sc->sc.sc_host, M_DEVBUF); 181 } 182 183 static int 184 sdhc_cardbus_detach(device_t self, int flags) 185 { 186 struct sdhc_cardbus_softc *sc = device_private(self); 187 struct cardbus_devfunc *ct = sc->sc_ct; 188 int rv; 189 190 rv = sdhc_detach(&sc->sc, flags); 191 if (rv) 192 return rv; 193 if (sc->sc_ih != NULL) { 194 Cardbus_intr_disestablish(ct, sc->sc_ih); 195 sc->sc_ih = NULL; 196 } 197 if (sc->sc.sc_host != NULL) { 198 free(sc->sc.sc_host, M_DEVBUF); 199 sc->sc.sc_host = NULL; 200 } 201 return 0; 202 } 203
Indexes created Sun Oct 25 00:26:45 UTC 2026