Date: Thu, 4 Apr 2002 13:31:33 -0500 (EST) From: Andrew Gallatin <gallatin@cs.duke.edu> To: mjacob@feral.com Cc: freebsd-current@freebsd.org Subject: BUS_SPACE_MAXSIZE & isp driver. Message-ID: <15532.39941.670795.769478@grasshopper.cs.duke.edu>
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I just booted a recent current (or rather attempted to) and saw this
when attempting to mount root from a qlogic card on my miata:
bus_dmamap_load: Too many segs! buf_len = 0x2000
spec_getpages:(da0a) I/O read failure: (error=22) bp
0xfffffe0004087ae8 vp 0xfffffe000ae90000
size: 98304, resid: 98304, a_count: 98304, valid: 0x0
nread: 0, reqpage: 7, pindex: 59, pcount: 12
vm_fault: pager read error, pid 1 (init)
<... more of same ...>
The only way I could get the system to boot was to increase
BUS_SPACE_MAXSIZE to 128K to match MAXPHYS. I don't know why they
don't match in the first place (they don't match on x86 either, so the
driver will probably puke there too.)
#define BUS_SPACE_MAXSIZE (128 * 1024)
Does anybody know why BUS_SPACE_MAXSIZE != MAXPHYS on some platforms?
Thanks,
Drew
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