some debug support turned on. It turns out the sections in this driver
binary had relative virtual addresses (RVAs) that were different
from the raw addresses, and it had a .data section where the virtual size
was much larger than the raw size. (Most production binaries produced
with the Microsoft DDK have RVA == PA.)
There's code in the ndiscvt(8) utility that's supposed to handle
the vsize != rsize case, but it turns out it was slightly broken,
and it failed to handle the RVA != RA case at all. Hopefully, this
commit will fix all that.
- Give ndiscvt(8) the ability to process a .SYS file directly into
a .o file so that we don't have to emit big messy char arrays into
the ndis_driver_data.h file. This behavior is currently optional, but
may become the default some day.
- Give ndiscvt(8) the ability to turn arbitrary files into .ko files
so that they can be pre-loaded or kldloaded. (Both this and the
previous change involve using objcopy(1)).
- Give NdisOpenFile() the ability to 'read' files out of kernel memory
that have been kldloaded or pre-loaded, and disallow the use of
the normal vn_open() file opening method during bootstrap (when no
filesystems have been mounted yet). Some people have reported that
kldloading if_ndis.ko works fine when the system is running multiuser
but causes a panic when the modile is pre-loaded by /boot/loader. This
happens with drivers that need to use NdisOpenFile() to access
external files (i.e. firmware images). NdisOpenFile() won't work
during kernel bootstrapping because no filesystems have been mounted.
To get around this, you can now do the following:
o Say you have a firmware file called firmware.img
o Do: ndiscvt -f firmware.img -- this creates firmware.img.ko
o Put the firmware.img.ko in /boot/kernel
o add firmware.img_load="YES" in /boot/loader.conf
o add if_ndis_load="YES" and ndis_load="YES" as well
Now the loader will suck the additional file into memory as a .ko. The
phony .ko has two symbols in it: filename_start and filename_end, which
are generated by objcopy(1). ndis_open_file() will traverse each module
in the module list looking for these symbols and, if it finds them, it'll
use them to generate the file mapping address and length values that
the caller of NdisOpenFile() wants.
As a bonus, this will even work if the file has been statically linked
into the kernel itself, since the "kernel" module is searched too.
(ndiscvt(8) will generate both filename.o and filename.ko for you).
- Modify the mechanism used to provide make-pretend FASTCALL support.
Rather than using inline assembly to yank the first two arguments
out of %ecx and %edx, we now use the __regparm__(3) attribute (and
the __stdcall__ attribute) and use some macro magic to re-order
the arguments and provide dummy arguments as needed so that the
arguments passed in registers end up in the right place. Change
taken from DragonflyBSD version of the NDISulator.
if_ndis.c has been split into if_ndis_pci.c and if_ndis_pccard.c.
The ndiscvt(8) utility should be able to parse device info for PCMCIA
devices now. The ndis_alloc_amem() has moved from kern_ndis.c to
if_ndis_pccard.c so that kern_ndis.c no longer depends on pccard.
NOTE: this stuff is not guaranteed to work 100% correctly yet. So
far I have been able to load/init my PCMCIA Cisco Aironet 340 card,
but it crashes in the interrupt handler. The existing support for
PCI/cardbus devices should still work as before.
loading on a particular version of Windows. For example, a .INF file
for a Windows 2000 driver may have an empty [foo.NT.5.1] section which
will be ingored on Win2K (whose .INF parser won't look for sections
decorated with .NT.5.1) in favor of a [foo] section. Likewise, a
WinXP file will have an empty [foo] section which will be ignored in
favor of [foo.NT.5.1].
The problem is, we can handle both Win2K and WinXP drivers, and we
don't want to exclude either one.
As a workaround, we try to pretend we are WinXP by default and search
for sections decorated with .NT.5.1, but if we don't turn up any records,
we assume that maybe we're being fooled by a sabotaged .INF file and
make one more pass looking for undecorated sections instead.
This allows us to parse the .INF files for both the Win2K and the WinXP
Centrino wireless drivers.
I'd give anything for 5 minutes alone in a room with whoever wrote
Microsoft's .INF file parser. Just 5 minutes. That's all.
their lines.
Properly discard PCMCIA device declarations. I plan to support
PCMCIA cards, but they don't work yet, and it appears some .INF files
declare both PCI and PCMCIA device instances.
keys, don't just do a substring match on "Ndi\Params". Instead, check
explicitly for strings that begin with "Ndi\Params". Why? Because it's
possible to create your own keys with different paths, like
"PROSetNdi\NdiExt\Params" which is what Intel does in their PRO/1000
driver's .INF file.
the NTx86 section decoration).
subr_ndis.c: correct the behavior of ndis_query_resources(): if the
caller doesn't provide enough space to return the resources, tell it
how much it needs to provide and return an error.
subr_hal.c & subr_ntoskrnl.c: implement/stub a bunch of new routines;
ntoskrnl:
KefAcquireSpinLockAtDpcLevel
KefReleaseSpinLockFromDpcLevel
MmMapLockedPages
InterlockedDecrement
InterlockedIncrement
IoFreeMdl
KeInitializeSpinLock
HAL:
KfReleaseSpinLock
KeGetCurrentIrql
KfAcquireSpinLock
Lastly, correct spelling of "_aullshr" in the ntoskrnl functable.
copyrights to the inf parser files.
Add a -n flag to ndiscvt to allow the user to override the default
device name of NDIS devices. Instead of "ndis0, ndis1, etc..."
you can have "foo0, foo1, etc..." This allows you to have more than
one kind of NDIS device in the kernel at the same time.
Convert from printf() to device_printf() in if_ndis.c, kern_ndis.c
and subr_ndis.c.
Create UMA zones for ndis_packet and ndis_buffer structs allocated
on transmit. The zones are created and destroyed in the modevent
handler in kern_ndis.c.
printf() and UMA changes submitted by green@freebsd.org
than a char array. Emitting the data as a big char array works fine in
the typical case, where a .sys file may be ~50K in size. Unfortunately,
some .sys files can be several hundred Kbytes in size, or even several
megabytes in size. One extreme case is the Intel centrino wireless
driver, which is 2.4MB. This causes us to emit an ndis_driver_data.h
file that's on the order of 15MB in size, and gcc consumes enormous
amounts of virtual memory while trying to compile it. On my laptop,
with 128MB of RAM and 256MB of swap space, gcc consumed all available
VM and crashed without being able to compile if_ndis.o.
By emitting the array as assembler, we bypass the C compiler and consume
much less memory. I was able to easily test compile if_ndis.ko with the
centrino driver on my laptop after this change.
This is merely a convenience, and should not have any operational effect
on the NDISulator itself.
definitions for more than one device (usually differentiated by
the PCI subvendor/subdevice ID). Each device also has its own tree
of registry keys. In some cases, each device has the same keys, but
sometimes each device has a unique tree but with overlap. Originally,
I just had ndiscvt(8) dump out all the keys it could find, and we
would try to apply them to every device we could find. Now, each key
has an index number that matches it to a device in the device ID list.
This lets us create just the keys that apply to a particular device.
I also added an extra field to the device list to hold the subvendor
and subdevice ID.
Some devices are generic, i.e. there is no subsystem definition. If
we have a device that doesn't match a specific subsystem value and
we have a generic entry, we use the generic entry.
the case where there's an entry in the manufacturer's device list but
no corresponding installation section (and hence no AddReg assignments),
i.e. if dev = find_assign(sname, "AddReg"); returns NULL, then
don't try to dereference dev.
There is a fundamental problem with the handling of .INF files that
contain definitions for multiple devices: right now we dump all the
AddReg sections that we find, but don't distinguish what device they
belong to. This often results in duplicate keys.
