| /* |
| * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
| * 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 <linux/time.h> |
| #include <sound/core.h> |
| #include <sound/emu10k1.h> |
| |
| 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); |
| } |