1 /* 2 * Copyright (c) by Jaroslav Kysela <perex@perex.cz> 3 * Creative Labs, Inc. 4 * Routines for IRQ control of EMU10K1 chips 5 * 6 * BUGS: 7 * -- 8 * 9 * TODO: 10 * -- 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 * 26 */ 27 28 #include <linux/time.h> 29 #include <sound/core.h> 30 #include <sound/emu10k1.h> 31 32 irqreturn_t snd_emu10k1_interrupt(int irq, void *dev_id) 33 { 34 struct snd_emu10k1 *emu = dev_id; 35 unsigned int status, status2, orig_status, orig_status2; 36 int handled = 0; 37 int timeout = 0; 38 39 while (((status = inl(emu->port + IPR)) != 0) && (timeout < 1000)) { 40 timeout++; 41 orig_status = status; 42 handled = 1; 43 if ((status & 0xffffffff) == 0xffffffff) { 44 snd_printk(KERN_INFO "snd-emu10k1: Suspected sound card removal\n"); 45 break; 46 } 47 if (status & IPR_PCIERROR) { 48 snd_printk(KERN_ERR "interrupt: PCI error\n"); 49 snd_emu10k1_intr_disable(emu, INTE_PCIERRORENABLE); 50 status &= ~IPR_PCIERROR; 51 } 52 if (status & (IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE)) { 53 if (emu->hwvol_interrupt) 54 emu->hwvol_interrupt(emu, status); 55 else 56 snd_emu10k1_intr_disable(emu, INTE_VOLINCRENABLE|INTE_VOLDECRENABLE|INTE_MUTEENABLE); 57 status &= ~(IPR_VOLINCR|IPR_VOLDECR|IPR_MUTE); 58 } 59 if (status & IPR_CHANNELLOOP) { 60 int voice; 61 int voice_max = status & IPR_CHANNELNUMBERMASK; 62 u32 val; 63 struct snd_emu10k1_voice *pvoice = emu->voices; 64 65 val = snd_emu10k1_ptr_read(emu, CLIPL, 0); 66 for (voice = 0; voice <= voice_max; voice++) { 67 if (voice == 0x20) 68 val = snd_emu10k1_ptr_read(emu, CLIPH, 0); 69 if (val & 1) { 70 if (pvoice->use && pvoice->interrupt != NULL) { 71 pvoice->interrupt(emu, pvoice); 72 snd_emu10k1_voice_intr_ack(emu, voice); 73 } else { 74 snd_emu10k1_voice_intr_disable(emu, voice); 75 } 76 } 77 val >>= 1; 78 pvoice++; 79 } 80 val = snd_emu10k1_ptr_read(emu, HLIPL, 0); 81 for (voice = 0; voice <= voice_max; voice++) { 82 if (voice == 0x20) 83 val = snd_emu10k1_ptr_read(emu, HLIPH, 0); 84 if (val & 1) { 85 if (pvoice->use && pvoice->interrupt != NULL) { 86 pvoice->interrupt(emu, pvoice); 87 snd_emu10k1_voice_half_loop_intr_ack(emu, voice); 88 } else { 89 snd_emu10k1_voice_half_loop_intr_disable(emu, voice); 90 } 91 } 92 val >>= 1; 93 pvoice++; 94 } 95 status &= ~IPR_CHANNELLOOP; 96 } 97 status &= ~IPR_CHANNELNUMBERMASK; 98 if (status & (IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL)) { 99 if (emu->capture_interrupt) 100 emu->capture_interrupt(emu, status); 101 else 102 snd_emu10k1_intr_disable(emu, INTE_ADCBUFENABLE); 103 status &= ~(IPR_ADCBUFFULL|IPR_ADCBUFHALFFULL); 104 } 105 if (status & (IPR_MICBUFFULL|IPR_MICBUFHALFFULL)) { 106 if (emu->capture_mic_interrupt) 107 emu->capture_mic_interrupt(emu, status); 108 else 109 snd_emu10k1_intr_disable(emu, INTE_MICBUFENABLE); 110 status &= ~(IPR_MICBUFFULL|IPR_MICBUFHALFFULL); 111 } 112 if (status & (IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL)) { 113 if (emu->capture_efx_interrupt) 114 emu->capture_efx_interrupt(emu, status); 115 else 116 snd_emu10k1_intr_disable(emu, INTE_EFXBUFENABLE); 117 status &= ~(IPR_EFXBUFFULL|IPR_EFXBUFHALFFULL); 118 } 119 if (status & (IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY)) { 120 if (emu->midi.interrupt) 121 emu->midi.interrupt(emu, status); 122 else 123 snd_emu10k1_intr_disable(emu, INTE_MIDITXENABLE|INTE_MIDIRXENABLE); 124 status &= ~(IPR_MIDITRANSBUFEMPTY|IPR_MIDIRECVBUFEMPTY); 125 } 126 if (status & (IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2)) { 127 if (emu->midi2.interrupt) 128 emu->midi2.interrupt(emu, status); 129 else 130 snd_emu10k1_intr_disable(emu, INTE_A_MIDITXENABLE2|INTE_A_MIDIRXENABLE2); 131 status &= ~(IPR_A_MIDITRANSBUFEMPTY2|IPR_A_MIDIRECVBUFEMPTY2); 132 } 133 if (status & IPR_INTERVALTIMER) { 134 if (emu->timer) 135 snd_timer_interrupt(emu->timer, emu->timer->sticks); 136 else 137 snd_emu10k1_intr_disable(emu, INTE_INTERVALTIMERENB); 138 status &= ~IPR_INTERVALTIMER; 139 } 140 if (status & (IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE)) { 141 if (emu->spdif_interrupt) 142 emu->spdif_interrupt(emu, status); 143 else 144 snd_emu10k1_intr_disable(emu, INTE_GPSPDIFENABLE|INTE_CDSPDIFENABLE); 145 status &= ~(IPR_GPSPDIFSTATUSCHANGE|IPR_CDROMSTATUSCHANGE); 146 } 147 if (status & IPR_FXDSP) { 148 if (emu->dsp_interrupt) 149 emu->dsp_interrupt(emu); 150 else 151 snd_emu10k1_intr_disable(emu, INTE_FXDSPENABLE); 152 status &= ~IPR_FXDSP; 153 } 154 if (status & IPR_P16V) { 155 while ((status2 = inl(emu->port + IPR2)) != 0) { 156 u32 mask = INTE2_PLAYBACK_CH_0_LOOP; /* Full Loop */ 157 struct snd_emu10k1_voice *pvoice = &(emu->p16v_voices[0]); 158 struct snd_emu10k1_voice *cvoice = &(emu->p16v_capture_voice); 159 160 //printk(KERN_INFO "status2=0x%x\n", status2); 161 orig_status2 = status2; 162 if(status2 & mask) { 163 if(pvoice->use) { 164 snd_pcm_period_elapsed(pvoice->epcm->substream); 165 } else { 166 snd_printk(KERN_ERR "p16v: status: 0x%08x, mask=0x%08x, pvoice=%p, use=%d\n", status2, mask, pvoice, pvoice->use); 167 } 168 } 169 if(status2 & 0x110000) { 170 //printk(KERN_INFO "capture int found\n"); 171 if(cvoice->use) { 172 //printk(KERN_INFO "capture period_elapsed\n"); 173 snd_pcm_period_elapsed(cvoice->epcm->substream); 174 } 175 } 176 outl(orig_status2, emu->port + IPR2); /* ack all */ 177 } 178 status &= ~IPR_P16V; 179 } 180 181 if (status) { 182 unsigned int bits; 183 snd_printk(KERN_ERR "emu10k1: unhandled interrupt: 0x%08x\n", status); 184 //make sure any interrupts we don't handle are disabled: 185 bits = INTE_FXDSPENABLE | 186 INTE_PCIERRORENABLE | 187 INTE_VOLINCRENABLE | 188 INTE_VOLDECRENABLE | 189 INTE_MUTEENABLE | 190 INTE_MICBUFENABLE | 191 INTE_ADCBUFENABLE | 192 INTE_EFXBUFENABLE | 193 INTE_GPSPDIFENABLE | 194 INTE_CDSPDIFENABLE | 195 INTE_INTERVALTIMERENB | 196 INTE_MIDITXENABLE | 197 INTE_MIDIRXENABLE; 198 if (emu->audigy) 199 bits |= INTE_A_MIDITXENABLE2 | INTE_A_MIDIRXENABLE2; 200 snd_emu10k1_intr_disable(emu, bits); 201 } 202 outl(orig_status, emu->port + IPR); /* ack all */ 203 } 204 if (timeout == 1000) 205 snd_printk(KERN_INFO "emu10k1 irq routine failure\n"); 206 207 return IRQ_RETVAL(handled); 208 } 209