At Sun, 15 Mar 2009 14:02:36 +0900, Emmanuel Chanel wrote: > > The problem "Fedora 10 x86_64 alsa problem: Realtek ALC889A Audio > Codec(ATI azalia) not detected on alsa" seems solved. > I consulted #alsa on FreeNode. And Mr. Daniel Koukola discovered the > reason. He spared for 14 hours in all this evening and all this night > for my problem. Thank you very, very, much, Mr. Daniel Koukola! > See https://bugzilla.redhat.com/show_bug.cgi?id=489828 #17 and #18 Hmm, then it's a bug of AMD/ATI controller chip. The problem is however likely only about CORB/RIRB addresses, and not about the sample buffers. So setting 32bit there couldn't be the "right" fix. How about the patch below? thanks, Takashi --- diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 92a73e8..2a7b9ab 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2136,7 +2136,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci, struct azx **rchip) { struct azx *chip; - int i, err; + int i, err, rirb_32bit; unsigned short gcap; static struct snd_device_ops ops = { .dev_free = azx_dev_free, @@ -2218,11 +2218,21 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci, pci_set_master(pci); synchronize_irq(chip->irq); + /* ATI chips seems buggy about 64bit CORB/RIRB addresses */ + if (chip->driver_type == AZX_DRIVER_ATI) + rirb_32bit = 1; + else + rirb_32bit = 0; + gcap = azx_readw(chip, GCAP); snd_printdd("chipset global capabilities = 0x%x\n", gcap); /* allow 64bit DMA address if supported by H/W */ - if ((gcap & 0x01) && !pci_set_dma_mask(pci, DMA_64BIT_MASK)) + /* Don't set 64bit DMA here for the controller buffer allocations + * on some buggy hardwares + */ + if (!rirb_32bit && + (gcap & 0x01) && !pci_set_dma_mask(pci, DMA_64BIT_MASK)) pci_set_consistent_dma_mask(pci, DMA_64BIT_MASK); /* read number of streams from GCAP register instead of using @@ -2309,6 +2319,11 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci, sprintf(card->longname, "%s at 0x%lx irq %i", card->shortname, chip->addr, chip->irq); + /* allow 64bit DMA address if supported by H/W (if not set yet) */ + if (rirb_32bit && + (gcap & 0x01) && !pci_set_dma_mask(pci, DMA_64BIT_MASK)) + pci_set_consistent_dma_mask(pci, DMA_64BIT_MASK); + *rchip = chip; return 0; _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel