Messages in this thread | | | Date | Thu, 2 Oct 2008 09:19:04 -0700 | From | "Yinghai Lu" <> | Subject | Re: [PATCH] x86, UV: add uv_setup_irq() and uv_teardown_irq() functions |
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On Wed, Oct 1, 2008 at 4:44 AM, Dean Nelson <dcn@sgi.com> wrote: > Provide a means for UV interrupt MMRs to be setup with the message to be sent > when an MSI is raised. > > Signed-off-by: Dean Nelson <dcn@sgi.com> > > --- > > This functionality is needed by drivers/misc/sgi-xp. And a patch will be > submitted shortly. > > arch/x86/kernel/Makefile | 2 > arch/x86/kernel/io_apic.c | 95 ++++++++++++++++++++++++++++++++++++++++ > arch/x86/kernel/uv_irq.c | 50 +++++++++++++++++++++ > include/asm-x86/uv/uv_irq.h | 34 ++++++++++++++ > kernel/irq/chip.c | 1 > 5 files changed, 181 insertions(+), 1 deletion(-) > > Index: linux/arch/x86/kernel/io_apic.c > =================================================================== > --- linux.orig/arch/x86/kernel/io_apic.c 2008-09-30 09:07:42.000000000 -0500 > +++ linux/arch/x86/kernel/io_apic.c 2008-09-30 12:54:12.000000000 -0500 > @@ -58,6 +58,8 @@ > #include <asm/setup.h> > #include <asm/irq_remapping.h> > #include <asm/hpet.h> > +#include <asm/uv/uv_hub.h> > +#include <asm/uv/uv_irq.h> > > #include <mach_ipi.h> > #include <mach_apic.h> > @@ -3694,6 +3696,99 @@ int arch_setup_ht_irq(unsigned int irq, > } > #endif /* CONFIG_HT_IRQ */ > > +#ifdef CONFIG_X86_64 > +static void noop(unsigned int irq) > +{ > +} > + > +static unsigned int noop_ret(unsigned int irq) > +{ > + return 0; > +} > + > +static void ack_apic(unsigned int irq) > +{ > + ack_APIC_irq(); > +} > + > +static struct irq_chip uv_irq_chip = { > + .name = "UV_MSI",
anything to do with MSI?
YH
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