cinap_lenrek [Sun, 13 Jan 2013 09:23:31 +0000 (10:23 +0100)]
remove non standard COM3 (eia2) serial port from i8250 uart.
access to non standard serial port COM3 at i/o port 0x200 causes
kernel panic on some machines (Toshiba Sattelite 1415-S115). also,
some machines have gameport at 0x200.
i readded uartisa to the pcf and pccpuf kernel configurations so
one can use plan9.ini to add non standard uarts like:
cinap_lenrek [Thu, 10 Jan 2013 21:16:23 +0000 (22:16 +0100)]
libdraw: gengetwindow() resize race
instead of trying to make rio not change the window image too fast
and give the client some time to attach it (which turns out to be
impossible), we acknowledge that there is a race and just retry
the window reattach as long as the winname keeps changing in
gengetwindow().
cinap_lenrek [Wed, 9 Jan 2013 15:32:53 +0000 (16:32 +0100)]
rio: fix window resize and attach race
if a window gets hidden/unhidden/resized too fast, the client might have no
chance attaching to that image using winname. so we move the window
offscreen instead and delay the freeimage() by doing it in the deletethread().
cinap_lenrek [Thu, 3 Jan 2013 19:46:25 +0000 (20:46 +0100)]
scsi: do only 36 byte inquiry
some devices freeze up with inqiry allocation length
other than 36 bytes. as we do not really care about
the vendor specific part of the inquiry, lets only do
36 byte inquiry for now.
cinap_lenrek [Wed, 2 Jan 2013 00:19:51 +0000 (01:19 +0100)]
vga: make kernel vga drivers more stupid
previously, we had to maintain 3 sets of pci vid/did's:
1) in /lib/vgadb for detection
2) in the userspace driver in aux/vga
3) in the kernel mode driver
this change makes the kernel mode driver more dumb in
the cases where possible. we let userspace do the pci
enumeration and if needed, it can set the pci address
of the vga card. kernel mode drivers can assume to get
the right pci device passed in scr->pci for enable()
and linear() functions and just do very basic sanity
checking before mapping framebuffer and mmio regions.
vgalinearpciid() was removed as userspace is responsible
to pick pci device.
theres a new vgactl message "pcidev" where userspace
can set the bus address. we initialize scr->pci in
vgareset() to the first pci graphics card found. this
should cover cases when an old aux/vga binary is used
that doesnt use the new pcidev message.
userspace drivers will now use the pci device that got
a match from /lib/vgadb and skip ther own enumeration.
this way, vga cards can be made to work by simply adding
an entry in vgadb with no need to modify userspace or
kernelspace drivers. this is not always possible if
the driver derives information from the specific card
model.
cinap_lenrek [Tue, 1 Jan 2013 15:27:01 +0000 (16:27 +0100)]
upas/marshal: change Inline: to Include: header, interpret even withou -8 flag
after some thought, the file attachment headers Attach: and Include:
(before Inline:) are more like the Subject: line and should be interpreted
every time.
cinap_lenrek [Wed, 26 Dec 2012 16:53:12 +0000 (17:53 +0100)]
devsd: fix possible sdbio() race with inquiry data changing (due to ahci hotplug)
the unit inquiry data might change in case the drive got pulled
with ahci. so keep track if we locked the ctl in a local stack
variable instead of relying on that the inquiry data stays the
same.
cinap_lenrek [Tue, 25 Dec 2012 01:45:28 +0000 (02:45 +0100)]
bio: remove useless Breadn() as it does the same as Bread()
Bread() always reads exactly nbytes of data if it can. only
when it reaches end of file or an error it will return less.
so the Breadn() function that was introduced has been removed.
cinap_lenrek [Mon, 24 Dec 2012 23:22:32 +0000 (00:22 +0100)]
sdiahci: prevent x301 dvd-ram from hanging machine
matushita dvd-ram on thinkpad x301 hangs on the inquiry command
done from scsiverify(). not sure whats wrong with it, but at least
this makes the machine boot.
wait for the drives to become ready or missing in iaonline()
and iaverify() to prevent nobootprompt= race.
handle task file error status (this can happen for atapi)
under some circumstances and would hang the io if not
handled.
preventively poll interrupts from the checkdrive kproc in
case we loose interrupts (bad via machine).
implement bios handoff procedure.
make sure the port is idle before programming the port dma
regios in configdrive(), do not start command processing
on the port unless phylink has been established.
cinap_lenrek [Wed, 19 Dec 2012 11:09:35 +0000 (12:09 +0100)]
nusb/kb: use report protocol for mouse
instead of forcing mouse to boot protocol, which often
doesnt work, we set it to report protocol and parse
the hid report descriptor. if thers no such descriptor
we revert to boot protocol.
all mouse packet parsing is done by report parser,
even for boot protocol. also all the work arrounds
for the leadbyte hack (report id?) are removed.
cinap_lenrek [Fri, 14 Dec 2012 03:38:45 +0000 (04:38 +0100)]
audio: replace µlawdec, add big endian and µlaw audio formats to pcmconv, µlaw in wav support
to support µ-law audio embedded in wav and big endian pcm
in sun audio files the µ-law and a-law and big endian integer
decoding was added to pcmconv. sundec now parses the sun
audio header supporting stereo now.