hdaudio_pci.c revision 1.9
1 /* $NetBSD: hdaudio_pci.c,v 1.9 2018/09/12 03:23:38 mrg 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 1.9 2018/09/12 03:23:38 mrg 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, maptype; 111 int err, reg; 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 reg = HDAUDIO_PCI_AZBARL; 131 maptype = pci_mapreg_type(sc->sc_pc, sc->sc_tag, reg); 132 err = pci_mapreg_map(pa, reg, maptype, 0, 133 &sc->sc_hdaudio.sc_memt, 134 &sc->sc_hdaudio.sc_memh, 135 &sc->sc_hdaudio.sc_membase, 136 &sc->sc_hdaudio.sc_memsize); 137 if (err) { 138 aprint_error_dev(self, "couldn't map mmio space\n"); 139 return; 140 } 141 sc->sc_hdaudio.sc_memvalid = true; 142 sc->sc_hdaudio.sc_dmat = pa->pa_dmat; 143 144 /* Map interrupt and establish handler */ 145 if (pci_intr_alloc(pa, &sc->sc_pihp, NULL, 0)) { 146 aprint_error_dev(self, "couldn't map interrupt\n"); 147 return; 148 } 149 intrstr = pci_intr_string(pa->pa_pc, sc->sc_pihp[0], intrbuf, 150 sizeof(intrbuf)); 151 sc->sc_ih = pci_intr_establish_xname(pa->pa_pc, sc->sc_pihp[0], 152 IPL_AUDIO, hdaudio_pci_intr, sc, device_xname(self)); 153 if (sc->sc_ih == NULL) { 154 aprint_error_dev(self, "couldn't establish interrupt"); 155 if (intrstr) 156 aprint_error(" at %s", intrstr); 157 aprint_error("\n"); 158 return; 159 } 160 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 161 162 hdaudio_pci_reinit(sc); 163 164 /* Attach bus-independent HD audio layer */ 165 if (hdaudio_attach(self, &sc->sc_hdaudio)) { 166 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 167 pci_intr_release(sc->sc_pc, sc->sc_pihp, 1); 168 sc->sc_ih = NULL; 169 bus_space_unmap(sc->sc_hdaudio.sc_memt, 170 sc->sc_hdaudio.sc_memh, 171 sc->sc_hdaudio.sc_memsize); 172 sc->sc_hdaudio.sc_memvalid = false; 173 csr = pci_conf_read(sc->sc_pc, sc->sc_tag, 174 PCI_COMMAND_STATUS_REG); 175 csr &= ~(PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_BACKTOBACK_ENABLE); 176 pci_conf_write(sc->sc_pc, sc->sc_tag, 177 PCI_COMMAND_STATUS_REG, csr); 178 179 if (!pmf_device_register(self, NULL, NULL)) 180 aprint_error_dev(self, "couldn't establish power handler\n"); 181 } 182 else if (!pmf_device_register(self, NULL, hdaudio_pci_resume)) 183 aprint_error_dev(self, "couldn't establish power handler\n"); 184 } 185 186 static int 187 hdaudio_pci_rescan(device_t self, const char *ifattr, const int *locs) 188 { 189 struct hdaudio_pci_softc *sc = device_private(self); 190 191 return hdaudio_rescan(&sc->sc_hdaudio, ifattr, locs); 192 } 193 194 void 195 hdaudio_pci_childdet(device_t self, device_t child) 196 { 197 struct hdaudio_pci_softc *sc = device_private(self); 198 199 hdaudio_childdet(&sc->sc_hdaudio, child); 200 } 201 202 static int 203 hdaudio_pci_detach(device_t self, int flags) 204 { 205 struct hdaudio_pci_softc *sc = device_private(self); 206 pcireg_t csr; 207 208 hdaudio_detach(&sc->sc_hdaudio, flags); 209 210 if (sc->sc_ih != NULL) { 211 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 212 pci_intr_release(sc->sc_pc, sc->sc_pihp, 1); 213 sc->sc_ih = NULL; 214 } 215 if (sc->sc_hdaudio.sc_memvalid == true) { 216 bus_space_unmap(sc->sc_hdaudio.sc_memt, 217 sc->sc_hdaudio.sc_memh, 218 sc->sc_hdaudio.sc_memsize); 219 sc->sc_hdaudio.sc_memvalid = false; 220 } 221 222 /* Disable busmastering and MMIO access */ 223 csr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG); 224 csr &= ~(PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_BACKTOBACK_ENABLE); 225 pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG, csr); 226 227 pmf_device_deregister(self); 228 229 return 0; 230 } 231 232 static int 233 hdaudio_pci_intr(void *opaque) 234 { 235 struct hdaudio_pci_softc *sc = opaque; 236 237 return hdaudio_intr(&sc->sc_hdaudio); 238 } 239 240 241 static void 242 hdaudio_pci_reinit(struct hdaudio_pci_softc *sc) 243 { 244 pcireg_t val; 245 246 /* stops playback static */ 247 val = pci_conf_read(sc->sc_pc, sc->sc_tag, HDAUDIO_PCI_TCSEL); 248 val &= ~7; 249 val |= 0; 250 pci_conf_write(sc->sc_pc, sc->sc_tag, HDAUDIO_PCI_TCSEL, val); 251 252 switch (PCI_VENDOR(sc->sc_id)) { 253 case PCI_VENDOR_NVIDIA: 254 /* enable snooping */ 255 val = pci_conf_read(sc->sc_pc, sc->sc_tag, 256 HDAUDIO_NV_REG_SNOOP); 257 val &= ~HDAUDIO_NV_SNOOP_MASK; 258 val |= HDAUDIO_NV_SNOOP_ENABLE; 259 pci_conf_write(sc->sc_pc, sc->sc_tag, 260 HDAUDIO_NV_REG_SNOOP, val); 261 break; 262 } 263 } 264 265 static bool 266 hdaudio_pci_resume(device_t self, const pmf_qual_t *qual) 267 { 268 struct hdaudio_pci_softc *sc = device_private(self); 269 270 hdaudio_pci_reinit(sc); 271 return hdaudio_resume(&sc->sc_hdaudio); 272 } 273 274 MODULE(MODULE_CLASS_DRIVER, hdaudio_pci, "pci,hdaudio,audio"); 275 276 #ifdef _MODULE 277 /* 278 * XXX Don't allow ioconf.c to redefine the "struct cfdriver hdaudio_cd" 279 * XXX it will be defined in the common hdaudio module 280 */ 281 282 #undef CFDRIVER_DECL 283 #define CFDRIVER_DECL(name, class, attr) /* nothing */ 284 #include "ioconf.c" 285 #endif 286 287 static int 288 hdaudio_pci_modcmd(modcmd_t cmd, void *opaque) 289 { 290 #ifdef _MODULE 291 /* 292 * We ignore the cfdriver_vec[] that ioconf provides, since 293 * the cfdrivers are attached already. 294 */ 295 static struct cfdriver * const no_cfdriver_vec[] = { NULL }; 296 #endif 297 int error = 0; 298 299 switch (cmd) { 300 case MODULE_CMD_INIT: 301 #ifdef _MODULE 302 error = config_init_component(no_cfdriver_vec, 303 cfattach_ioconf_hdaudio_pci, cfdata_ioconf_hdaudio_pci); 304 #endif 305 return error; 306 case MODULE_CMD_FINI: 307 #ifdef _MODULE 308 error = config_fini_component(no_cfdriver_vec, 309 cfattach_ioconf_hdaudio_pci, cfdata_ioconf_hdaudio_pci); 310 #endif 311 return error; 312 default: 313 return ENOTTY; 314 } 315 } 316
Indexes created Thu Oct 02 01:09:59 GMT 2025