Marius Strobl 3da80d3a0e Check the return values of contigmalloc(9) as well as bus_dma(9) ... functions and stop attaching of dcons(4) and dcons_crom(4) if they indicate failure. This fixes a panic seen on sparc64 machines with no free physical memory in the requested 32-bit region but still doesn't make dcons(4)/dcons_crom(4) these work. I think the latter can be fixed by simply specifying ~0UL as the upper limit for contigmalloc(9) and letting the bounce pages and the IOMMU respectively handle limitations of the DMA engine. I didn't want to change that without the consensus of simokawa@ though, who unfortunately didn't reply so far. MFC after: 1 week		2009-01-07 21:25:44 +00:00
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dcons.c
dcons.h	Integrate the new MPSAFE TTY layer to the FreeBSD operating system.	2008-08-20 08:31:58 +00:00
dcons_crom.c	Check the return values of contigmalloc(9) as well as bus_dma(9)	2009-01-07 21:25:44 +00:00
dcons_os.c	Check the return values of contigmalloc(9) as well as bus_dma(9)	2009-01-07 21:25:44 +00:00
dcons_os.h	Poll bus resets on FireWire while kdb/gdb is active.	2007-06-08 00:54:44 +00:00