WOOOOOT, awesome, thanks John. BTW, have this code up and
running here also now, will be new features that build on it forthcoming.
Jack
On 11/13/06, John Baldwin <[EMAIL PROTECTED]> wrote:
jhb 2006-11-13 22:23:34 UTC
FreeBSD src repository
Modified files:
sys/amd64/amd64 local_apic.c mptable_pci.c nexus.c
sys/amd64/include apicvar.h intr_machdep.h
sys/amd64/pci pci_bus.c
sys/conf files.amd64 files.i386
sys/i386/i386 local_apic.c mptable_pci.c nexus.c
sys/i386/include apicvar.h intr_machdep.h
sys/i386/pci pci_bus.c
Added files:
sys/amd64/amd64 msi.c
sys/i386/i386 msi.c
Log:
MD support for PCI Message Signalled Interrupts on amd64 and i386:
- Add a new apic_alloc_vectors() method to the local APIC support code
to allocate N contiguous IDT vectors (aligned on a M >= N boundary).
This function is used to allocate IDT vectors for a group of MSI
messages.
- Add MSI and MSI-X PICs. The PIC code here provides methods to manage
edge-triggered MSI messages as x86 interrupt sources. In addition to
the PIC methods, msi.c also includes methods to allocate and release
MSI and MSI-X messages. For x86, we allow for up to 128 different
MSI IRQs starting at IRQ 256 (IRQs 0-15 are reserved for ISA IRQs,
16-254 for APIC PCI IRQs, and IRQ 255 is reserved).
- Add pcib_(alloc|release)_msi[x]() methods to the MD x86 PCI bridge
drivers to bubble the request up to the nexus driver.
- Add pcib_(alloc|release)_msi[x]() methods to the x86 nexus drivers that
ask the MSI PIC code to allocate resources and IDT vectors.
MFC after: 2 months
Revision Changes Path
1.33 +62 -0 src/sys/amd64/amd64/local_apic.c
1.5 +8 -0 src/sys/amd64/amd64/mptable_pci.c
1.1 +511 -0 src/sys/amd64/amd64/msi.c (new)
1.70 +53 -0 src/sys/amd64/amd64/nexus.c
1.20 +1 -0 src/sys/amd64/include/apicvar.h
1.12 +17 -4 src/sys/amd64/include/intr_machdep.h
1.118 +4 -0 src/sys/amd64/pci/pci_bus.c
1.99 +1 -0 src/sys/conf/files.amd64
1.571 +1 -0 src/sys/conf/files.i386
1.35 +62 -0 src/sys/i386/i386/local_apic.c
1.5 +8 -0 src/sys/i386/i386/mptable_pci.c
1.1 +511 -0 src/sys/i386/i386/msi.c (new)
1.65 +62 -0 src/sys/i386/i386/nexus.c
1.20 +1 -0 src/sys/i386/include/apicvar.h
1.14 +17 -4 src/sys/i386/include/intr_machdep.h
1.124 +8 -0 src/sys/i386/pci/pci_bus.c
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