hdaudio_pci.c revision 1.7
1 /* $NetBSD: hdaudio_pci.c,v 1.7 2017/04/27 10:01:54 msaitoh Exp $ */ 2 3 /* 4 * Copyright (c) 2009 Precedence Technologies Ltd <support (at) precedence.co.uk> 5 * Copyright (c) 2009 Jared D. McNeill <jmcneill (at) invisible.ca> 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Precedence Technologies Ltd 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. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Intel High Definition Audio (Revision 1.0a) device driver. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: hdaudio_pci.c,v 1.7 2017/04/27 10:01:54 msaitoh Exp $"); 38 39 #include <sys/types.h> 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 #include <sys/conf.h> 44 #include <sys/bus.h> 45 #include <sys/intr.h> 46 #include <sys/module.h> 47 48 #include <dev/pci/pcidevs.h> 49 #include <dev/pci/pcivar.h> 50 51 #include <dev/hdaudio/hdaudioreg.h> 52 #include <dev/hdaudio/hdaudiovar.h> 53 #include <dev/pci/hdaudio_pci.h> 54 55 struct hdaudio_pci_softc { 56 struct hdaudio_softc sc_hdaudio; /* must be first */ 57 pcitag_t sc_tag; 58 pci_chipset_tag_t sc_pc; 59 void *sc_ih; 60 pcireg_t sc_id; 61 pci_intr_handle_t *sc_pihp; 62 }; 63 64 static int hdaudio_pci_match(device_t, cfdata_t, void *); 65 static void hdaudio_pci_attach(device_t, device_t, void *); 66 static int hdaudio_pci_detach(device_t, int); 67 static int hdaudio_pci_rescan(device_t, const char *, const int *); 68 static void hdaudio_pci_childdet(device_t, device_t); 69 70 static int hdaudio_pci_intr(void *); 71 static void hdaudio_pci_reinit(struct hdaudio_pci_softc *); 72 73 /* power management */ 74 static bool hdaudio_pci_resume(device_t, const pmf_qual_t *); 75 76 CFATTACH_DECL2_NEW( 77 hdaudio_pci, 78 sizeof(struct hdaudio_pci_softc), 79 hdaudio_pci_match, 80 hdaudio_pci_attach, 81 hdaudio_pci_detach, 82 NULL, 83 hdaudio_pci_rescan, 84 hdaudio_pci_childdet 85 ); 86 87 /* 88 * NetBSD autoconfiguration 89 */ 90 91 static int 92 hdaudio_pci_match(device_t parent, cfdata_t match, void *opaque) 93 { 94 struct pci_attach_args *pa = opaque; 95 96 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_MULTIMEDIA) 97 return 0; 98 if (PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_MULTIMEDIA_HDAUDIO) 99 return 0; 100 101 return 10; 102 } 103 104 static void 105 hdaudio_pci_attach(device_t parent, device_t self, void *opaque) 106 { 107 struct hdaudio_pci_softc *sc = device_private(self); 108 struct pci_attach_args *pa = opaque; 109 const char *intrstr; 110 pcireg_t csr; 111 int err; 112 char intrbuf[PCI_INTRSTR_LEN]; 113 114 aprint_naive("\n"); 115 aprint_normal(": HD Audio Controller\n"); 116 117 sc->sc_pc = pa->pa_pc; 118 sc->sc_tag = pa->pa_tag; 119 sc->sc_id = pa->pa_id; 120 121 sc->sc_hdaudio.sc_subsystem = pci_conf_read(sc->sc_pc, sc->sc_tag, 122 PCI_SUBSYS_ID_REG); 123 124 /* Enable busmastering and MMIO access */ 125 csr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG); 126 csr |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_BACKTOBACK_ENABLE; 127 pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG, csr); 128 129 /* Map MMIO registers */ 130 err = pci_mapreg_map(pa, HDAUDIO_PCI_AZBARL, PCI_MAPREG_TYPE_MEM, 0, 131 &sc->sc_hdaudio.sc_memt, 132 &sc->sc_hdaudio.sc_memh, 133 &sc->sc_hdaudio.sc_membase, 134 &sc->sc_hdaudio.sc_memsize); 135 if (err) { 136 aprint_error_dev(self, "couldn't map mmio space\n"); 137 return; 138 } 139 sc->sc_hdaudio.sc_memvalid = true; 140 sc->sc_hdaudio.sc_dmat = pa->pa_dmat; 141 142 /* Map interrupt and establish handler */ 143 if (pci_intr_alloc(pa, &sc->sc_pihp, NULL, 0)) { 144 aprint_error_dev(self, "couldn't map interrupt\n"); 145 return; 146 } 147 intrstr = pci_intr_string(pa->pa_pc, sc->sc_pihp[0], intrbuf, 148 sizeof(intrbuf)); 149 sc->sc_ih = pci_intr_establish_xname(pa->pa_pc, sc->sc_pihp[0], 150 IPL_AUDIO, hdaudio_pci_intr, sc, device_xname(self)); 151 if (sc->sc_ih == NULL) { 152 aprint_error_dev(self, "couldn't establish interrupt"); 153 if (intrstr) 154 aprint_error(" at %s", intrstr); 155 aprint_error("\n"); 156 return; 157 } 158 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 159 160 hdaudio_pci_reinit(sc); 161 162 /* Attach bus-independent HD audio layer */ 163 if (hdaudio_attach(self, &sc->sc_hdaudio)) { 164 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 165 pci_intr_release(sc->sc_pc, sc->sc_pihp, 1); 166 sc->sc_ih = NULL; 167 bus_space_unmap(sc->sc_hdaudio.sc_memt, 168 sc->sc_hdaudio.sc_memh, 169 sc->sc_hdaudio.sc_memsize); 170 sc->sc_hdaudio.sc_memvalid = false; 171 csr = pci_conf_read(sc->sc_pc, sc->sc_tag, 172 PCI_COMMAND_STATUS_REG); 173 csr &= ~(PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_BACKTOBACK_ENABLE); 174 pci_conf_write(sc->sc_pc, sc->sc_tag, 175 PCI_COMMAND_STATUS_REG, csr); 176 177 if (!pmf_device_register(self, NULL, NULL)) 178 aprint_error_dev(self, "couldn't establish power handler\n"); 179 } 180 else if (!pmf_device_register(self, NULL, hdaudio_pci_resume)) 181 aprint_error_dev(self, "couldn't establish power handler\n"); 182 } 183 184 static int 185 hdaudio_pci_rescan(device_t self, const char *ifattr, const int *locs) 186 { 187 struct hdaudio_pci_softc *sc = device_private(self); 188 189 return hdaudio_rescan(&sc->sc_hdaudio, ifattr, locs); 190 } 191 192 void 193 hdaudio_pci_childdet(device_t self, device_t child) 194 { 195 struct hdaudio_pci_softc *sc = device_private(self); 196 197 hdaudio_childdet(&sc->sc_hdaudio, child); 198 } 199 200 static int 201 hdaudio_pci_detach(device_t self, int flags) 202 { 203 struct hdaudio_pci_softc *sc = device_private(self); 204 pcireg_t csr; 205 206 hdaudio_detach(&sc->sc_hdaudio, flags); 207 208 if (sc->sc_ih != NULL) { 209 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 210 pci_intr_release(sc->sc_pc, sc->sc_pihp, 1); 211 sc->sc_ih = NULL; 212 } 213 if (sc->sc_hdaudio.sc_memvalid == true) { 214 bus_space_unmap(sc->sc_hdaudio.sc_memt, 215 sc->sc_hdaudio.sc_memh, 216 sc->sc_hdaudio.sc_memsize); 217 sc->sc_hdaudio.sc_memvalid = false; 218 } 219 220 /* Disable busmastering and MMIO access */ 221 csr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG); 222 csr &= ~(PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_BACKTOBACK_ENABLE); 223 pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG, csr); 224 225 pmf_device_deregister(self); 226 227 return 0; 228 } 229 230 static int 231 hdaudio_pci_intr(void *opaque) 232 { 233 struct hdaudio_pci_softc *sc = opaque; 234 235 return hdaudio_intr(&sc->sc_hdaudio); 236 } 237 238 239 static void 240 hdaudio_pci_reinit(struct hdaudio_pci_softc *sc) 241 { 242 pcireg_t val; 243 244 /* stops playback static */ 245 val = pci_conf_read(sc->sc_pc, sc->sc_tag, HDAUDIO_PCI_TCSEL); 246 val &= ~7; 247 val |= 0; 248 pci_conf_write(sc->sc_pc, sc->sc_tag, HDAUDIO_PCI_TCSEL, val); 249 250 switch (PCI_VENDOR(sc->sc_id)) { 251 case PCI_VENDOR_NVIDIA: 252 /* enable snooping */ 253 val = pci_conf_read(sc->sc_pc, sc->sc_tag, 254 HDAUDIO_NV_REG_SNOOP); 255 val &= ~HDAUDIO_NV_SNOOP_MASK; 256 val |= HDAUDIO_NV_SNOOP_ENABLE; 257 pci_conf_write(sc->sc_pc, sc->sc_tag, 258 HDAUDIO_NV_REG_SNOOP, val); 259 break; 260 } 261 } 262 263 static bool 264 hdaudio_pci_resume(device_t self, const pmf_qual_t *qual) 265 { 266 struct hdaudio_pci_softc *sc = device_private(self); 267 268 hdaudio_pci_reinit(sc); 269 return hdaudio_resume(&sc->sc_hdaudio); 270 } 271 272 MODULE(MODULE_CLASS_DRIVER, hdaudio_pci, "hdaudio"); 273 274 #ifdef _MODULE 275 #include "ioconf.c" 276 #endif 277 278 static int 279 hdaudio_pci_modcmd(modcmd_t cmd, void *opaque) 280 { 281 int error = 0; 282 283 switch (cmd) { 284 case MODULE_CMD_INIT: 285 #ifdef _MODULE 286 error = config_init_component(cfdriver_ioconf_hdaudio_pci, 287 cfattach_ioconf_hdaudio_pci, cfdata_ioconf_hdaudio_pci); 288 #endif 289 return error; 290 case MODULE_CMD_FINI: 291 #ifdef _MODULE 292 error = config_fini_component(cfdriver_ioconf_hdaudio_pci, 293 cfattach_ioconf_hdaudio_pci, cfdata_ioconf_hdaudio_pci); 294 #endif 295 return error; 296 default: 297 return ENOTTY; 298 } 299 } 300
Indexes created Thu Oct 02 01:09:59 GMT 2025