Author: mav Date: Thu Sep 30 16:23:01 2010 New Revision: 213302 URL: http://svn.freebsd.org/changeset/base/213302
Log: Do not use regular interrupts on NVidia HPETs. NVidia MCP5x chipsets have number of unexplained interrupt problems. For some reason, using HPET interrupts there breaks HDA sound. Legacy route mode interrupts reported to work fine there. Modified: head/sys/dev/acpica/acpi_hpet.c Modified: head/sys/dev/acpica/acpi_hpet.c ============================================================================== --- head/sys/dev/acpica/acpi_hpet.c Thu Sep 30 16:09:52 2010 (r213301) +++ head/sys/dev/acpica/acpi_hpet.c Thu Sep 30 16:23:01 2010 (r213302) @@ -58,6 +58,7 @@ __FBSDID("$FreeBSD$"); #define HPET_VENDID_AMD 0x4353 #define HPET_VENDID_INTEL 0x8086 +#define HPET_VENDID_NVIDIA 0x10de ACPI_SERIAL_DECL(hpet, "ACPI HPET support"); @@ -492,6 +493,12 @@ hpet_attach(device_t dev) if (vendor == HPET_VENDID_AMD) sc->allowed_irqs = 0x00000000; /* + * NVidia MCP5x chipsets have number of unexplained interrupt + * problems. For some reason, using HPET interrupts breaks HDA sound. + */ + if (vendor == HPET_VENDID_NVIDIA && rev <= 0x01) + sc->allowed_irqs = 0x00000000; + /* * Neither QEMU nor VirtualBox report supported IRQs correctly. * The only way to use HPET there is to specify IRQs manually * and/or use legacy_route. Legacy_route mode work on both. _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"