CVS commit: src/sys/arch

Module Name:	src
Committed By:	rkujawa
Date:		Mon Jun 22 12:34:20 UTC 2026

Modified Files:
	src/sys/arch/evbppc/include: sam460ex.h
	src/sys/arch/evbppc/sam460ex: autoconf.c machdep.c
	src/sys/arch/powerpc/ibm4xx/pci: pciex.c
	src/sys/arch/powerpc/include/ibm4xx: amcc460ex.h pci_machdep.h
	    vmparam.h
	src/sys/arch/powerpc/powerpc: bus_dma.c

Log Message:
Fix PCI Express issues on Sam460ex.
- Mapping memory region for DMA through bus_dma framework with coherency
  requested now causes the region to be uncached for 440 cores.
- DMA inbound window mapping
- Avoid configuration cycles that stall the bus
- Board-specific interrupt mapping

Now mpt in PCI Express x4 slot does around 100MB/s to a spinning rust
hard drive and is stable.


To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/sys/arch/evbppc/include/sam460ex.h
cvs rdiff -u -r1.3 -r1.4 src/sys/arch/evbppc/sam460ex/autoconf.c
cvs rdiff -u -r1.5 -r1.6 src/sys/arch/evbppc/sam460ex/machdep.c
cvs rdiff -u -r1.2 -r1.3 src/sys/arch/powerpc/ibm4xx/pci/pciex.c
cvs rdiff -u -r1.3 -r1.4 src/sys/arch/powerpc/include/ibm4xx/amcc460ex.h
cvs rdiff -u -r1.7 -r1.8 src/sys/arch/powerpc/include/ibm4xx/pci_machdep.h
cvs rdiff -u -r1.12 -r1.13 src/sys/arch/powerpc/include/ibm4xx/vmparam.h
cvs rdiff -u -r1.58 -r1.59 src/sys/arch/powerpc/powerpc/bus_dma.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.