/* * 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) { dev_info(emu->card->dev, "Suspected sound card removal\n"); break; } if (status & IPR_PCIERROR) { dev_err(emu->card->dev, "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); /* dev_dbg(emu->card->dev, "status2=0x%x\n", status2); */ orig_status2 = status2; if(status2 & mask) { if(pvoice->use) { snd_pcm_period_elapsed(pvoice->epcm->substream); } else { dev_err(emu->card->dev, "p16v: status: 0x%08x, mask=0x%08x, pvoice=%p, use=%d\n", status2, mask, pvoice, pvoice->use); } } if(status2 & 0x110000) { /* dev_info(emu->card->dev, "capture int found\n"); */ if(cvoice->use) { /* dev_info(emu->card->dev, "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; dev_err(emu->card->dev, "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) dev_info(emu->card->dev, "emu10k1 irq routine failure\n"); return IRQ_RETVAL(handled); } de") stopped creating 1:1 mappings for all RAM, when running in native 64-bit mode. It turns out though that there are 64-bit EFI implementations in the wild (this particular problem has been reported on a Lenovo Yoga 710-11IKB), which still make use of the first physical page for their own private use, even though they explicitly mark it EFI_CONVENTIONAL_MEMORY in the memory map. In case there is no mapping for this particular frame in the EFI pagetables, as soon as firmware tries to make use of it, a triple fault occurs and the system reboots (in case of the Yoga 710-11IKB this is very early during bootup). Fix that by always mapping the first page of physical memory into the EFI pagetables. We're free to hand this page to the BIOS, as trim_bios_range() will reserve the first page and isolate it away from memory allocators anyway. Note that just reverting 129766708 alone is not enough on v4.9-rc1+ to fix the regression on affected hardware, as this commit: ab72a27da ("x86/efi: Consolidate region mapping logic") later made the first physical frame not to be mapped anyway. Reported-by: Hanka Pavlikova <hanka@ucw.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bp@suse.de> Cc: Laura Abbott <labbott@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vojtech Pavlik <vojtech@ucw.cz> Cc: Waiman Long <waiman.long@hpe.com> Cc: linux-efi@vger.kernel.org Cc: stable@kernel.org # v4.8+ Fixes: 129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode") Link: http://lkml.kernel.org/r/20170127222552.22336-1-matt@codeblueprint.co.uk [ Tidied up the changelog and the comment. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'sound/soc/codecs/wm8994.c')