/* * Copyright (c) by Jaroslav Kysela * Creative Labs, Inc. * Routines for IRQ control of EMU10K1 chips * * BUGS: * -- * * TODO: * -- * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include #include #include irqreturn_t snd_emu10k1_interrupt(int irq, void *dev_id) { struct snd_emu10k1 *emu = dev_id; unsigned int status, status2, orig_status, orig_status2; int handled = 0; int timeout = 0; while (((status = inl(emu->port + IPR)) != 0) && (timeout < 1000)) { timeout++; orig_status = status; handled = 1; if ((status & 0xffffffff) == 0xffffffff) { snd_printk(KERN_INFO "snd-emu10k1: Suspected sound card removal\n"); break; } if (status & IPR_PCIERROR) { snd_printk(KERN_ERR "interrupt: PCI error\n"); snd_emu10k1_intr_disable(emu, INTE_PCIERRORENABLE); status &= ~IPR_PCIERROR; } if (status & (IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE)) { if (emu->hwvol_interrupt) emu->hwvol_interrupt(emu, status); else snd_emu10k1_intr_disable(emu, INTE_VOLINCRENABLE|INTE_VOLDECRENABLE|INTE_MUTEENABLE); status &= ~(IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE); } if (status & IPR_CHANNELLOOP) { int voice; int voice_max = status & IPR_CHANNELNUMBERMASK; u32 val; struct snd_emu10k1_voice *pvoice = emu->voices; val = snd_emu10k1_ptr_read(emu, CLIPL, 0); for (voice = 0; voice <= voice_max; voice++) { if (voice == 0x20) val = snd_emu10k1_ptr_read(emu, CLIPH, 0); if (val & 1) { if (pvoice->use && pvoice->interrupt != NULL) { pvoice->interrupt(emu, pvoice); snd_emu10k1_voice_intr_ack(emu, voice); } else { snd_emu10k1_voice_intr_disable(emu, voice); } } val >>= 1; pvoice++; } val = snd_emu10k1_ptr_read(emu, HLIPL, 0); for (voice = 0; voice <= voice_max; voice++) { if (voice == 0x20) val = snd_emu10k1_ptr_read(emu, HLIPH, 0); if (val & 1) { if (pvoice->use && pvoice->interrupt != NULL) { pvoice->interrupt(emu, pvoice); snd_emu10k1_voice_half_loop_intr_ack(emu, voice); } else { snd_emu10k1_voice_half_loop_intr_disable(emu, voice); } } val >>= 1; pvoice++; } status &= ~IPR_CHANNELLOOP; } status &= ~IPR_CHANNELNUMBERMASK; if (status & (IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL)) { if (emu->capture_interrupt) emu->capture_interrupt(emu, status); else snd_emu10k1_intr_disable(emu, INTE_ADCBUFENABLE); status &= ~(IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL); } if (status & (IPR_MICBUFFULL|IPR_MICBUFHALFFULL)) { if (emu->capture_mic_interrupt) emu->capture_mic_interrupt(emu, status); else snd_emu10k1_intr_disable(emu, INTE_MICBUFENABLE); status &= ~(IPR_MICBUFFULL|IPR_MICBUFHALFFULL); } if (status & (IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL)) { if (emu->capture_efx_interrupt) emu->capture_efx_interrupt(emu, status); else snd_emu10k1_intr_disable(emu, INTE_EFXBUFENABLE); status &= ~(IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL); } if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) { if (emu->midi.interrupt) emu->midi.interrupt(emu, status); else snd_emu10k1_intr_disable(emu, INTE_MIDITXENABLE|INTE_MIDIRXENABLE); status &= ~(IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY); } if (status & (IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2)) { if (emu->midi2.interrupt) emu->midi2.interrupt(emu, status); else snd_emu10k1_intr_disable(emu, INTE_A_MIDITXENABLE2|INTE_A_MIDIRXENABLE2); status &= ~(IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2); } if (status & IPR_INTERVALTIMER) { if (emu->timer) snd_timer_interrupt(emu->timer, emu->timer->sticks); else snd_emu10k1_intr_disable(emu, INTE_INTERVALTIMERENB); status &= ~IPR_INTERVALTIMER; } if (status & (IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE)) { if (emu->spdif_interrupt) emu->spdif_interrupt(emu, status); else snd_emu10k1_intr_disable(emu, INTE_GPSPDIFENABLE|INTE_CDSPDIFENABLE); status &= ~(IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE); } if (status & IPR_FXDSP) { if (emu->dsp_interrupt) emu->dsp_interrupt(emu); else snd_emu10k1_intr_disable(emu, INTE_FXDSPENABLE); status &= ~IPR_FXDSP; } if (status & IPR_P16V) { while ((status2 = inl(emu->port + IPR2)) != 0) { u32 mask = INTE2_PLAYBACK_CH_0_LOOP; /* Full Loop */ struct snd_emu10k1_voice *pvoice = &(emu->p16v_voices[0]); struct snd_emu10k1_voice *cvoice = &(emu->p16v_capture_voice); //printk(KERN_INFO "status2=0x%x\n", status2); orig_status2 = status2; if(status2 & mask) { if(pvoice->use) { snd_pcm_period_elapsed(pvoice->epcm->substream); } else { snd_printk(KERN_ERR "p16v: status: 0x%08x, mask=0x%08x, pvoice=%p, use=%d\n", status2, mask, pvoice, pvoice->use); } } if(status2 & 0x110000) { //printk(KERN_INFO "capture int found\n"); if(cvoice->use) { //printk(KERN_INFO "capture period_elapsed\n"); snd_pcm_period_elapsed(cvoice->epcm->substream); } } outl(orig_status2, emu->port + IPR2); /* ack all */ } status &= ~IPR_P16V; } if (status) { unsigned int bits; snd_printk(KERN_ERR "emu10k1: unhandled interrupt: 0x%08x\n", status); //make sure any interrupts we don't handle are disabled: bits = INTE_FXDSPENABLE | INTE_PCIERRORENABLE | INTE_VOLINCRENABLE | INTE_VOLDECRENABLE | INTE_MUTEENABLE | INTE_MICBUFENABLE | INTE_ADCBUFENABLE | INTE_EFXBUFENABLE | INTE_GPSPDIFENABLE | INTE_CDSPDIFENABLE | INTE_INTERVALTIMERENB | INTE_MIDITXENABLE | INTE_MIDIRXENABLE; if (emu->audigy) bits |= INTE_A_MIDITXENABLE2 | INTE_A_MIDIRXENABLE2; snd_emu10k1_intr_disable(emu, bits); } outl(orig_status, emu->port + IPR); /* ack all */ } if (timeout == 1000) snd_printk(KERN_INFO "emu10k1 irq routine failure\n"); return IRQ_RETVAL(handled); }