hdaudio_pci.c revision 1.8.8.1
1 /* $NetBSD: hdaudio_pci.c,v 1.8.8.1 2019/06/10 22:07:15 christos 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 1.8.8.1 2019/06/10 22:07:15 christos 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 if (pci_dma64_available(pa)) 143 sc->sc_hdaudio.sc_dmat = pa->pa_dmat64; 144 else 145 sc->sc_hdaudio.sc_dmat = pa->pa_dmat; 146 147 /* Map interrupt and establish handler */ 148 if (pci_intr_alloc(pa, &sc->sc_pihp, NULL, 0)) { 149 aprint_error_dev(self, "couldn't map interrupt\n"); 150 return; 151 } 152 intrstr = pci_intr_string(pa->pa_pc, sc->sc_pihp[0], intrbuf, 153 sizeof(intrbuf)); 154 sc->sc_ih = pci_intr_establish_xname(pa->pa_pc, sc->sc_pihp[0], 155 IPL_AUDIO, hdaudio_pci_intr, sc, device_xname(self)); 156 if (sc->sc_ih == NULL) { 157 aprint_error_dev(self, "couldn't establish interrupt"); 158 if (intrstr) 159 aprint_error(" at %s", intrstr); 160 aprint_error("\n"); 161 return; 162 } 163 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 164 165 hdaudio_pci_reinit(sc); 166 167 /* Attach bus-independent HD audio layer */ 168 if (hdaudio_attach(self, &sc->sc_hdaudio)) { 169 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 170 pci_intr_release(sc->sc_pc, sc->sc_pihp, 1); 171 sc->sc_ih = NULL; 172 bus_space_unmap(sc->sc_hdaudio.sc_memt, 173 sc->sc_hdaudio.sc_memh, 174 sc->sc_hdaudio.sc_memsize); 175 sc->sc_hdaudio.sc_memvalid = false; 176 csr = pci_conf_read(sc->sc_pc, sc->sc_tag, 177 PCI_COMMAND_STATUS_REG); 178 csr &= ~(PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_BACKTOBACK_ENABLE); 179 pci_conf_write(sc->sc_pc, sc->sc_tag, 180 PCI_COMMAND_STATUS_REG, csr); 181 182 if (!pmf_device_register(self, NULL, NULL)) 183 aprint_error_dev(self, "couldn't establish power handler\n"); 184 } 185 else if (!pmf_device_register(self, NULL, hdaudio_pci_resume)) 186 aprint_error_dev(self, "couldn't establish power handler\n"); 187 } 188 189 static int 190 hdaudio_pci_rescan(device_t self, const char *ifattr, const int *locs) 191 { 192 struct hdaudio_pci_softc *sc = device_private(self); 193 194 return hdaudio_rescan(&sc->sc_hdaudio, ifattr, locs); 195 } 196 197 void 198 hdaudio_pci_childdet(device_t self, device_t child) 199 { 200 struct hdaudio_pci_softc *sc = device_private(self); 201 202 hdaudio_childdet(&sc->sc_hdaudio, child); 203 } 204 205 static int 206 hdaudio_pci_detach(device_t self, int flags) 207 { 208 struct hdaudio_pci_softc *sc = device_private(self); 209 pcireg_t csr; 210 211 hdaudio_detach(&sc->sc_hdaudio, flags); 212 213 if (sc->sc_ih != NULL) { 214 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 215 pci_intr_release(sc->sc_pc, sc->sc_pihp, 1); 216 sc->sc_ih = NULL; 217 } 218 if (sc->sc_hdaudio.sc_memvalid == true) { 219 bus_space_unmap(sc->sc_hdaudio.sc_memt, 220 sc->sc_hdaudio.sc_memh, 221 sc->sc_hdaudio.sc_memsize); 222 sc->sc_hdaudio.sc_memvalid = false; 223 } 224 225 /* Disable busmastering and MMIO access */ 226 csr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG); 227 csr &= ~(PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_BACKTOBACK_ENABLE); 228 pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG, csr); 229 230 pmf_device_deregister(self); 231 232 return 0; 233 } 234 235 static int 236 hdaudio_pci_intr(void *opaque) 237 { 238 struct hdaudio_pci_softc *sc = opaque; 239 240 return hdaudio_intr(&sc->sc_hdaudio); 241 } 242 243 244 static void 245 hdaudio_pci_reinit(struct hdaudio_pci_softc *sc) 246 { 247 pcireg_t val; 248 249 /* stops playback static */ 250 val = pci_conf_read(sc->sc_pc, sc->sc_tag, HDAUDIO_PCI_TCSEL); 251 val &= ~7; 252 val |= 0; 253 pci_conf_write(sc->sc_pc, sc->sc_tag, HDAUDIO_PCI_TCSEL, val); 254 255 switch (PCI_VENDOR(sc->sc_id)) { 256 case PCI_VENDOR_NVIDIA: 257 /* enable snooping */ 258 val = pci_conf_read(sc->sc_pc, sc->sc_tag, 259 HDAUDIO_NV_REG_SNOOP); 260 val &= ~HDAUDIO_NV_SNOOP_MASK; 261 val |= HDAUDIO_NV_SNOOP_ENABLE; 262 pci_conf_write(sc->sc_pc, sc->sc_tag, 263 HDAUDIO_NV_REG_SNOOP, val); 264 break; 265 } 266 } 267 268 static bool 269 hdaudio_pci_resume(device_t self, const pmf_qual_t *qual) 270 { 271 struct hdaudio_pci_softc *sc = device_private(self); 272 273 hdaudio_pci_reinit(sc); 274 return hdaudio_resume(&sc->sc_hdaudio); 275 } 276 277 MODULE(MODULE_CLASS_DRIVER, hdaudio_pci, "pci,hdaudio,audio"); 278 279 #ifdef _MODULE 280 /* 281 * XXX Don't allow ioconf.c to redefine the "struct cfdriver hdaudio_cd" 282 * XXX it will be defined in the common hdaudio module 283 */ 284 285 #undef CFDRIVER_DECL 286 #define CFDRIVER_DECL(name, class, attr) /* nothing */ 287 #include "ioconf.c" 288 #endif 289 290 static int 291 hdaudio_pci_modcmd(modcmd_t cmd, void *opaque) 292 { 293 #ifdef _MODULE 294 /* 295 * We ignore the cfdriver_vec[] that ioconf provides, since 296 * the cfdrivers are attached already. 297 */ 298 static struct cfdriver * const no_cfdriver_vec[] = { NULL }; 299 #endif 300 int error = 0; 301 302 switch (cmd) { 303 case MODULE_CMD_INIT: 304 #ifdef _MODULE 305 error = config_init_component(no_cfdriver_vec, 306 cfattach_ioconf_hdaudio_pci, cfdata_ioconf_hdaudio_pci); 307 #endif 308 return error; 309 case MODULE_CMD_FINI: 310 #ifdef _MODULE 311 error = config_fini_component(no_cfdriver_vec, 312 cfattach_ioconf_hdaudio_pci, cfdata_ioconf_hdaudio_pci); 313 #endif 314 return error; 315 default: 316 return ENOTTY; 317 } 318 } 319
Indexes created Thu Oct 02 01:09:59 GMT 2025