CVS commit: src/sys/arch/alpha

["Jason R Thorpe" <thorpej%netbsd.org@localhost>]

Module Name:    src
Committed By:   thorpej
Date:           Wed Oct 14 00:59:50 UTC 2020

Modified Files:
        src/sys/arch/alpha/alpha: api_up1000.c dec_2000_300.c machdep.c
        src/sys/arch/alpha/include: alpha.h cpuconf.h vmparam.h
        src/sys/arch/alpha/jensenio: jensenio_dma.c jenseniovar.h
        src/sys/arch/alpha/pci: irongate_dma.c irongatevar.h

Log Message:
Add a mechanism to allow a platform to optionally shelter some region
of physical memory from random allocations from the default VM page
free list.  Use this hook to shelter regions within 0-16MB of physical
RAM on Jensen and Irongate systems; those platforms do not have SGMAP
DMA, and so we need to shelter this range so that devices using ISA DMA
(e.g. floppy controller) have an opportunity to allocate DMA-safe memory.

PR port-alpha/27087


To generate a diff of this commit:
cvs rdiff -u -r1.30 -r1.31 src/sys/arch/alpha/alpha/api_up1000.c
cvs rdiff -u -r1.19 -r1.20 src/sys/arch/alpha/alpha/dec_2000_300.c
cvs rdiff -u -r1.367 -r1.368 src/sys/arch/alpha/alpha/machdep.c
cvs rdiff -u -r1.43 -r1.44 src/sys/arch/alpha/include/alpha.h
cvs rdiff -u -r1.16 -r1.17 src/sys/arch/alpha/include/cpuconf.h
cvs rdiff -u -r1.39 -r1.40 src/sys/arch/alpha/include/vmparam.h
cvs rdiff -u -r1.6 -r1.7 src/sys/arch/alpha/jensenio/jensenio_dma.c
cvs rdiff -u -r1.5 -r1.6 src/sys/arch/alpha/jensenio/jenseniovar.h
cvs rdiff -u -r1.7 -r1.8 src/sys/arch/alpha/pci/irongate_dma.c
cvs rdiff -u -r1.6 -r1.7 src/sys/arch/alpha/pci/irongatevar.h

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