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authorThordur I. Bjornsson <thib@cvs.openbsd.org>2010-06-27 03:03:50 +0000
committerThordur I. Bjornsson <thib@cvs.openbsd.org>2010-06-27 03:03:50 +0000
commit8a46d785199bcae03d0469a55b99e08fe33263fa (patch)
tree9b784b445528b5c78da12077fd065ae9030cf6d7 /sys/dev/eisa
parentb109c783d06f4af76ff573fa020fbe9d1d855f7b (diff)
uvm constraints. Add two mandatory MD symbols, uvm_md_constraints
which contains the constraints for DMA/memory allocation for each architecture, and dma_constraints which contains the range of addresses that are dma accessable by the system. This is based on ariane@'s physcontig diff, with lots of bugfixes and additions the following additions by my self: Introduce a new function pool_set_constraints() which sets the address range for which we allocate pages for the pool from, this is now used for the mbuf/mbuf cluster pools to keep them dma accessible. The !direct archs no longer stuff pages into the kernel object in uvm_km_getpage_pla but rather do a pmap_extract() in uvm_km_putpages. Tested heavily by my self on i386, amd64 and sparc64. Some tests on alpha and SGI. "commit it" beck, art, oga, deraadt "i like the diff" deraadt
Diffstat (limited to 'sys/dev/eisa')
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