151 lines
3.1 KiB
C
151 lines
3.1 KiB
C
/*
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* \brief Audio driver BSD API emulation
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* \author Josef Soentgen
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* \date 2014-11-09
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*/
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/*
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* Copyright (C) 2014-2015 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#include <bsd_emul.h>
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#include <sys/device.h>
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#include <dev/audio_if.h>
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/******************
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** sys/kernel.h **
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******************/
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int hz = HZ;
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/* ioconf.c */
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extern struct cfdriver audio_cd;
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extern struct cfattach audio_ca;
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extern struct cfdriver azalia_cd;
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extern struct cfattach azalia_ca;
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extern struct cfdriver eap_cd;
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extern struct cfattach eap_ca;
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/* original value */
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enum { PCI_BUS_PARENT = 56 };
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short pv[] = { -1, PCI_BUS_PARENT };
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struct cfdata cfdata[] = {
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{&audio_ca, &audio_cd, 0, 0, 0, 0, pv+0, 0, 0},
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{&azalia_ca, &azalia_cd, 0, 0, 0, 0, pv+1, 0, 0},
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{&eap_ca, &eap_cd, 0, 0, 0, 0, pv+1, 0, 0},
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};
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int enodev(void) { return ENODEV; }
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/* global character device switch table */
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struct cdevsw cdevsw[] = {
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/* cdev_audio_init */
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{
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audioopen,
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audioclose,
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audioread,
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audiowrite,
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audioioctl,
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(int (*)(struct tty*, int)) enodev,
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0,
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audiopoll,
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0,
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0,
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0,
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0,
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},
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};
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/* needed by dev/audio.c:522 */
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int nchrdev = sizeof(cdevsw) / sizeof(struct cdevsw);
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struct device pci_bus = { DV_DULL, { 0, 0 }, 0, 0, { 'p', 'c', 'i', '0'}, 0, 0, 0 };
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/**
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* This function is our little helper that matches and attaches
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* the driver to the device.
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*/
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int probe_cfdata(struct pci_attach_args *pa)
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{
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size_t ncd = sizeof(cfdata) / sizeof(struct cfdata);
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size_t i;
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for (i = 0; i < ncd; i++) {
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struct cfdata *cf = &cfdata[i];
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struct cfdriver *cd = cf->cf_driver;
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if (*cf->cf_parents != PCI_BUS_PARENT)
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continue;
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struct cfattach *ca = cf->cf_attach;
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if (!ca->ca_match)
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continue;
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int rv = ca->ca_match(&pci_bus, 0, pa);
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if (rv) {
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struct device *dev = (struct device *) malloc(ca->ca_devsize,
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M_DEVBUF, M_NOWAIT|M_ZERO);
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snprintf(dev->dv_xname, sizeof(dev->dv_xname), "%s%d", cd->cd_name,
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dev->dv_unit);
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printf("%s at %s\n", dev->dv_xname, pci_bus.dv_xname);
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ca->ca_attach(&pci_bus, dev, pa);
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return 1;
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}
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}
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return 0;
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}
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struct device *config_found_sm(struct device *parent, void *aux, cfprint_t print,
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cfmatch_t submatch)
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{
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struct cfdata *cf = &cfdata[0];
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struct cfattach *ca = cf->cf_attach;
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struct cfdriver *cd = cf->cf_driver;
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int rv = ca->ca_match(parent, NULL, aux);
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if (rv) {
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struct device *dev = (struct device *) malloc(ca->ca_devsize, M_DEVBUF,
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M_NOWAIT|M_ZERO);
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snprintf(dev->dv_xname, sizeof(dev->dv_xname), "%s%d", cd->cd_name,
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dev->dv_unit);
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printf("%s at %s\n", dev->dv_xname, parent->dv_xname);
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ca->ca_attach(parent, dev, aux);
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audio_cd.cd_ndevs = 1;
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audio_cd.cd_devs = malloc(sizeof(void*), 0, 0);
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audio_cd.cd_devs[0] = dev;
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return dev;
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}
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return 0;
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}
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struct device *device_lookup(struct cfdriver *cd, int unit)
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{
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if (unit >= audio_cd.cd_ndevs || audio_cd.cd_devs[unit] == NULL)
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return NULL;
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return audio_cd.cd_devs[unit];
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}
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