| 1 | /* $NetBSD: hdaudio_pci.c,v 1.4 2016/07/14 04:19:27 msaitoh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 2009 Precedence Technologies Ltd <support@precedence.co.uk> |
| 5 | * Copyright (c) 2009 Jared D. McNeill <jmcneill@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 1.4 2016/07/14 04:19:27 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 | }; |
| 62 | |
| 63 | static int hdaudio_pci_match(device_t, cfdata_t, void *); |
| 64 | static void hdaudio_pci_attach(device_t, device_t, void *); |
| 65 | static int hdaudio_pci_detach(device_t, int); |
| 66 | static int hdaudio_pci_rescan(device_t, const char *, const int *); |
| 67 | static void hdaudio_pci_childdet(device_t, device_t); |
| 68 | |
| 69 | static int hdaudio_pci_intr(void *); |
| 70 | static void hdaudio_pci_reinit(struct hdaudio_pci_softc *); |
| 71 | |
| 72 | /* power management */ |
| 73 | static bool hdaudio_pci_resume(device_t, const pmf_qual_t *); |
| 74 | |
| 75 | CFATTACH_DECL2_NEW( |
| 76 | hdaudio_pci, |
| 77 | sizeof(struct hdaudio_pci_softc), |
| 78 | hdaudio_pci_match, |
| 79 | hdaudio_pci_attach, |
| 80 | hdaudio_pci_detach, |
| 81 | NULL, |
| 82 | hdaudio_pci_rescan, |
| 83 | hdaudio_pci_childdet |
| 84 | ); |
| 85 | |
| 86 | /* |
| 87 | * NetBSD autoconfiguration |
| 88 | */ |
| 89 | |
| 90 | static int |
| 91 | hdaudio_pci_match(device_t parent, cfdata_t match, void *opaque) |
| 92 | { |
| 93 | struct pci_attach_args *pa = opaque; |
| 94 | |
| 95 | if (PCI_CLASS(pa->pa_class) != PCI_CLASS_MULTIMEDIA) |
| 96 | return 0; |
| 97 | if (PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_MULTIMEDIA_HDAUDIO) |
| 98 | return 0; |
| 99 | |
| 100 | return 10; |
| 101 | } |
| 102 | |
| 103 | static void |
| 104 | hdaudio_pci_attach(device_t parent, device_t self, void *opaque) |
| 105 | { |
| 106 | struct hdaudio_pci_softc *sc = device_private(self); |
| 107 | struct pci_attach_args *pa = opaque; |
| 108 | pci_intr_handle_t ih; |
| 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 | err = pci_intr_map(pa, &ih); |
| 144 | if (err) { |
| 145 | aprint_error_dev(self, "couldn't map interrupt\n" ); |
| 146 | return; |
| 147 | } |
| 148 | intrstr = pci_intr_string(pa->pa_pc, ih, intrbuf, sizeof(intrbuf)); |
| 149 | sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_AUDIO, |
| 150 | hdaudio_pci_intr, sc); |
| 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 | if (!pmf_device_register(self, NULL, hdaudio_pci_resume)) |
| 161 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 162 | |
| 163 | hdaudio_pci_reinit(sc); |
| 164 | |
| 165 | /* Attach bus-independent HD audio layer */ |
| 166 | if (hdaudio_attach(self, &sc->sc_hdaudio)) { |
| 167 | pci_intr_disestablish(sc->sc_pc, sc->sc_ih); |
| 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 | pmf_device_deregister(self); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | static int |
| 183 | hdaudio_pci_rescan(device_t self, const char *ifattr, const int *locs) |
| 184 | { |
| 185 | struct hdaudio_pci_softc *sc = device_private(self); |
| 186 | |
| 187 | return hdaudio_rescan(&sc->sc_hdaudio, ifattr, locs); |
| 188 | } |
| 189 | |
| 190 | void |
| 191 | hdaudio_pci_childdet(device_t self, device_t child) |
| 192 | { |
| 193 | struct hdaudio_pci_softc *sc = device_private(self); |
| 194 | |
| 195 | hdaudio_childdet(&sc->sc_hdaudio, child); |
| 196 | } |
| 197 | |
| 198 | static int |
| 199 | hdaudio_pci_detach(device_t self, int flags) |
| 200 | { |
| 201 | struct hdaudio_pci_softc *sc = device_private(self); |
| 202 | pcireg_t csr; |
| 203 | |
| 204 | hdaudio_detach(&sc->sc_hdaudio, flags); |
| 205 | |
| 206 | if (sc->sc_ih != NULL) { |
| 207 | pci_intr_disestablish(sc->sc_pc, sc->sc_ih); |
| 208 | sc->sc_ih = NULL; |
| 209 | } |
| 210 | if (sc->sc_hdaudio.sc_memvalid == true) { |
| 211 | bus_space_unmap(sc->sc_hdaudio.sc_memt, |
| 212 | sc->sc_hdaudio.sc_memh, |
| 213 | sc->sc_hdaudio.sc_memsize); |
| 214 | sc->sc_hdaudio.sc_memvalid = false; |
| 215 | } |
| 216 | |
| 217 | /* Disable busmastering and MMIO access */ |
| 218 | csr = pci_conf_read(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG); |
| 219 | csr &= ~(PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_BACKTOBACK_ENABLE); |
| 220 | pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_COMMAND_STATUS_REG, csr); |
| 221 | |
| 222 | pmf_device_deregister(self); |
| 223 | |
| 224 | return 0; |
| 225 | } |
| 226 | |
| 227 | static int |
| 228 | hdaudio_pci_intr(void *opaque) |
| 229 | { |
| 230 | struct hdaudio_pci_softc *sc = opaque; |
| 231 | |
| 232 | return hdaudio_intr(&sc->sc_hdaudio); |
| 233 | } |
| 234 | |
| 235 | |
| 236 | static void |
| 237 | hdaudio_pci_reinit(struct hdaudio_pci_softc *sc) |
| 238 | { |
| 239 | pcireg_t val; |
| 240 | |
| 241 | /* stops playback static */ |
| 242 | val = pci_conf_read(sc->sc_pc, sc->sc_tag, HDAUDIO_PCI_TCSEL); |
| 243 | val &= ~7; |
| 244 | val |= 0; |
| 245 | pci_conf_write(sc->sc_pc, sc->sc_tag, HDAUDIO_PCI_TCSEL, val); |
| 246 | |
| 247 | switch (PCI_VENDOR(sc->sc_id)) { |
| 248 | case PCI_VENDOR_NVIDIA: |
| 249 | /* enable snooping */ |
| 250 | val = pci_conf_read(sc->sc_pc, sc->sc_tag, |
| 251 | HDAUDIO_NV_REG_SNOOP); |
| 252 | val &= ~HDAUDIO_NV_SNOOP_MASK; |
| 253 | val |= HDAUDIO_NV_SNOOP_ENABLE; |
| 254 | pci_conf_write(sc->sc_pc, sc->sc_tag, |
| 255 | HDAUDIO_NV_REG_SNOOP, val); |
| 256 | break; |
| 257 | } |
| 258 | } |
| 259 | |
| 260 | static bool |
| 261 | hdaudio_pci_resume(device_t self, const pmf_qual_t *qual) |
| 262 | { |
| 263 | struct hdaudio_pci_softc *sc = device_private(self); |
| 264 | |
| 265 | hdaudio_pci_reinit(sc); |
| 266 | return hdaudio_resume(&sc->sc_hdaudio); |
| 267 | } |
| 268 | |
| 269 | MODULE(MODULE_CLASS_DRIVER, hdaudio_pci, "hdaudio" ); |
| 270 | |
| 271 | #ifdef _MODULE |
| 272 | #include "ioconf.c" |
| 273 | #endif |
| 274 | |
| 275 | static int |
| 276 | hdaudio_pci_modcmd(modcmd_t cmd, void *opaque) |
| 277 | { |
| 278 | int error = 0; |
| 279 | |
| 280 | switch (cmd) { |
| 281 | case MODULE_CMD_INIT: |
| 282 | #ifdef _MODULE |
| 283 | error = config_init_component(cfdriver_ioconf_hdaudio_pci, |
| 284 | cfattach_ioconf_hdaudio_pci, cfdata_ioconf_hdaudio_pci); |
| 285 | #endif |
| 286 | return error; |
| 287 | case MODULE_CMD_FINI: |
| 288 | #ifdef _MODULE |
| 289 | error = config_fini_component(cfdriver_ioconf_hdaudio_pci, |
| 290 | cfattach_ioconf_hdaudio_pci, cfdata_ioconf_hdaudio_pci); |
| 291 | #endif |
| 292 | return error; |
| 293 | default: |
| 294 | return ENOTTY; |
| 295 | } |
| 296 | } |
| 297 | |