the following hooks have been added to the ehci Ctlr
structore to handle cache coherency (on arm):
void* (*tdalloc)(ulong,int,ulong);
void* (*dmaalloc)(ulong);
void (*dmafree)(void*);
void (*dmaflush)(int,void*,ulong);
tdalloc() is used to allocate descriptors and the periodic
frame schedule array. on arm, this needs to return uncached
memory. tdalloc()ed memory is never freed.
dmaalloc()/dmafree() is used for io buffers. this can return
cached memory when when hardware maintains cache coherency (pc)
or dmaflush() is provided to flush/invalidate the cache (zynq),
otherwise needs to return uncached memory.
dmaflush() is used to flush/invalidate the cache. the first
argument tells us if we need to flush (non zero) or
invalidate (zero).
uncached.h is gone now. this change makes the handling explicit.
map the whole ocm memory on boot so we can translate physical to
virtual addresses and back for uncached memory using KADDR() and
PADDR().
replace ualloc() with ucalloc() returning virtual address. physical
address can be acquired with PADDR() now.
as ocm is now always mapped, use KADDR() instead of tmpmap() for
mp bootstrap.
passing "", "." or ".." as name caused a crash in
getenv() as it would open the directory; then seek()
to determine the file size would fail and return -1.
now checking for these special names and set
error string when its bad.
doing a single read() will not work when /env has a
9p fileserver mounted onto it and the file size is bigger
than the i/o unit. so doing incremental reads until
we get eof.
there are no kernels currently that do page coloring,
so the only use of cachectl[] is flushing the icache
(on arm and ppc).
on pc64, cachectl consumes 32 bytes in each page resulting
in over 200 megabytes of overhead for 32gb of ram with 4K
pages.
this change removes cachectl[] and adds txtflush ulong
that is set to ~0 by pio() to instruct putmmu() to flush
the icache.
vbs/vbe members in Mode was only used in the vesadb
and cannot be changed from vgadb.
use shs/ehs in drivers when refering to the horizontal
sync pulse. clarify the matter in a comment.
link detailed timing modes at the head of the edid
modelist. these are the modes we'r interested in,
not the ones from vesadb.
igfx and vesa can determine monitor timing information from ddc
and store the edid info for connected monitors in vga->edid[].
when monitor type cannot be found in vgadb, we consult the edid
information and make a mode based on the edid info.
this avoids having to maintain a vgadb entry for each monitor.
monitor can be set to "[width]x[height]@[freq]Hz" for a specific
edid setting. when not found, a mode is searched based on the
size.
so the following should work:
aux/vga -m 1366x768@60Hz -l 1366x768x32
aux/vga -m auto -l 1366x768x32
dbvesamode() modified the passed in size string in the process
of option parsing. this is a no-go because the string might be
constant in the read only section. provide cracksize() function
for the parsing and make a static copy.
do the vendor specific monitor detection in vbesnarf() instead
of vbecheck(). vbecheck()'s purpose is to check if vesa bios
service is avialable, not snarf graphics card state.
nvidiascale() was a no-op because it missed the vbecall() at
the end of the function. this means it was never tested so i
add the missing vbecall(), but disable nvidiascale for now
until someone tests this.
keep fancy stuff out of the Vbe structure. it is just there for
making bios calls, not keep state about the graphics card.
we used to read beyond the boundaries of the becon because of
the end pointer was offset by the beacon header. this is
also what caused the double entries.
this bug happens when the kernel runs out of mount rpc
buffers when allocating a flush rpc. in this case, mntflushalloc()
will errorjump out of mountio() leaving the currently in
flight rpc in the mount. the caller of mountrpc()/mountio()
frees the rpc thats still queued in the mount leaving
to interesting results.
for the fix, we add a waserror() arround mntflushalloc() and
handle the error case like a mount rpc failure which will
properly dequeue the rpc's in flight.
this adds support for eap-peap/mschapv2 and eap-ttls/pap.
code has only been tested with freeradius and a cheap
access point, not tested with actual eduroam network.
this is used for wpa2 enterprise peap/mschapv2. server role
is not implemented as that would require changing the
wire format on the auth server.
the naming is unfortunate as we already have proto=mschap2 which
really refers to ntlmv2.
the FPOFF macro that follows the FXSAVE/FSAVE instructions in l.s
used to execute WAIT instruction when the TS flag was not set. this
is wrong and causes pending exceptions to be raised from fpsave which
is called from provsave() which holds up->rlock making it deadlock
when matherror() tries to postnote() to itself.
so making FPOFF non-waiting (just set TS flag).
we handle pending exception when restoring the context.
