map ranges that are smaller than what our resource manager code knows
is available, rather than requiring that they match exactly. This
fixes a problem with the Intel PRO/1000 gigE driver: it wants to map
a range of 32 I/O ports, even though some chips appear set up to
decode a range of 64. With this fix, it loads and runs correctly.
these add support for listing BSSIDs via wicontrol -l. I added code
to call OID_802_11_BSSID_LIST_SCAN to allow scanning for any nearby
wirelsss nets.
Convert from using individual mutexes to a mutex pool, created in
subr_ndis.c. This deals with the problem of drivers creating locks
in their DriverEntry() routines which might get trashed later.
Put some messages under IFF_DEBUG.
which has two important flags in it: the 'allocated by NDIS' flag
and the 'media specific info present' flag. There are two Windows macros
for getting/setting media specific info fields within the ndis_packet
structure which can behave improperly if these flags are not initialized
correctly when a packet is allocated. It seems the correct thing
to do is always set the NDIS_PACKET_ALLOCATED_BY_NDIS flag on
all newly allocated packets.
This fixes the crashes with the Intel Centrino wireless driver.
My sample card now seems to work correctly.
Also, fix a potential LOR involving ndis_txeof() in if_ndis.c.
By default, we search for files in /compat/ndis. This can be changed with
a systcl. These routines are used by some drivers which need to download
firmware or microcode into their respective devices during initialization.
Also, remove extraneous newlines from the 'built-in' sysctl/registry
variables.
held. However, if we need to translate a unicode message table message,
ndis_unicode_to_ascii() might malloc() some memory, which causes
a warning from witness. Avoid this by using some stack space to hold
the translated message. (Also bounds check to make sure we don't
overrun the stack buffer.)
in subr_ndis and subr_ntoskrnl. This is faster and avoids potential
LOR whinage from witness (an LOR couldn't happen with the old code
since the interlocked inc/dec routines could not sleep with a lock
held, but this will keep witness happy and it's more efficient
anyway. I think.)
so we increment the right thing. (All work and not enough parens
make Bill something something...) This makes the RealTek 8139C+
driver work correctly.
Also fix some mtx_lock_spin()s and mtx_unlock_spin()s that should
have been just plain mtx_lock()s and mtx_unlock()s.
In kern_ndis.c: remove duplicate code from ndis_send_packets() and
just call the senddone handler (ndis_txeof()).
flag so that it can see if the message string is unicode or not and
do the conversion itself rather than doing it in subr_pe.c. This
prevents subr_pe.c from being dependent on subr_ndis.c.
the RT_MESSAGETABLE resources that some driver binaries have.
This allows us to print error messages in ndis_syslog().
- Correct the implementation of InterlockedIncrement() and
InterlockedDecrement() -- they return uint32_t, not void.
- Correct the declarations of the 64-bit arithmetic shift
routines in subr_ntoskrnl.c (_allshr, allshl, etc...). These
do not follow the _stdcall convention: instead, they appear
to be __attribute__((regparm(3)).
- Change the implementation of KeInitializeSpinLock(). There is
no complementary KeFreeSpinLock() function, so creating a new
mutex on each call to KeInitializeSpinLock() leaks resources
when a driver is unloaded. For now, KeInitializeSpinLock()
returns a handle to the ntoskrnl interlock mutex.
- Use a driver's MiniportDisableInterrupt() and MiniportEnableInterrupt()
routines if they exist. I'm not sure if I'm doing this right
yet, but at the very least this shouldn't break any currently
working drivers, and it makes the Intel PRO/1000 driver work.
- In ndis_register_intr(), save some state that might be needed
later, and save a pointer to the driver's interrupt structure
in the ndis_miniport_block.
- Save a pointer to the driver image for use by ndis_syslog()
when it calls pe_get_message().
and MiniportHandleInterrupt() is fired off later via a task queue in
ndis_intrtask(). This more accurately follows the NDIS interrupt handling
model, where the ISR does a minimal amount of work in interrupt context
and the handler is defered and run at a lower priority.
Create a separate ndis_intrmtx mutex just for the guarding the ISR.
Modify NdisSynchronizeWithInterrupt() to aquire the ndis_intrmtx
mutex before invoking the synchronized procedure. (The purpose of
this function is to provide mutual exclusion for code that shares
variables with the ISR.)
Modify NdisMRegisterInterrupt() to save a pointer to the miniport
block in the ndis_miniport_interrupt structure so that
NdisSynchronizeWithInterrupt() can grab it later and derive
ndis_intrmtx from it.
driver was compiled with.
Remove debug printf from ndis_assicn_pcirsc(). It doesn't serve
much purpose.
Implement NdisMIndicateStatus() and NdisMIndicateStatusComplete()
as functions in subr_ndis.c. In NDIS 4.0, they were functions. In
NDIS 5.0 and later, they're just macros.
Allocate a few extra packets/buffers beyond what the driver asks
for since sometimes it seems they can lie about how many they really
need, and some extra stupid ones don't check to see if NdisAllocatePacket()
and/or NdisAllocateBuffer() actually succeed.
calling the haltfunc. If an interrupt is triggered by the init
or halt func, the IFF_UP flag must be set in order for us to be able
to service it.
In kern_ndis.c: implement a handler for NdisMSendResourcesAvailable()
(currently does nothing since we don't really need it).
In subr_ndis.c:
- Correct ndis_init_string() and ndis_unicode_to_ansi(),
which were both horribly broken.
- Implement NdisImmediateReadPciSlotInformation() and
NdisImmediateWritePciSlotInformation().
- Implement NdisBufferLength().
- Work around my first confirmed NDIS driver bug.
The SMC 9462 gigE driver (natsemi 83820-based copper)
incorrectly creates a spinlock in its DriverEntry()
routine and then destroys it in its MiniportHalt()
handler. This is wrong: spinlocks should be created
in MiniportInit(). In a Windows environment, this is
often not a problem because DriverEntry()/MiniportInit()
are called once when the system boots and MiniportHalt()
or the shutdown handler is called when the system halts.
With this stuff in place, this driver now seems to work:
ndis0: <SMC EZ Card 1000> port 0xe000-0xe0ff mem 0xda000000-0xda000fff irq 10 at device 9.0 on pci0
ndis0: assign PCI resources...
ndis_open_file("FLASH9.hex", 18446744073709551615)
ndis0: Ethernet address: 00:04:e2:0e:d3:f0
subr_ndis.c: implement NdisDprAllocatePacket() and NdisDprFreePacket()
(which are aliased to NdisAllocatePacket() and NdisFreePacket()), and
bump the value we return in ndis_mapreg_cnt() to something ridiculously
large, since some drivers apparently expect to be able to allocate
way more than just 64.
These changes allow the Level 1 1000baseSX driver to work for
the following card:
ndis0: <SMC TigerCard 1000 Adapter> port 0xe000-0xe0ff mem 0xda004000-0xda0043ff irq 10 at device 9.0 on pci0
ndis0: Ethernet address: 00:e0:29:6f:cc:04
This is already supported by the lge(4) driver, but I decided
to take a try at making the Windows driver that came with it work too,
since I still had the floppy diskette for it lying around.
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
nb_size field in an ndis_buffer is meant to represent, but it does not
represent the original allocation size, so the sanity check doesn't
make any sense now that we're using the Windows-mandated initialization
method.
Among other things, this makes the following card work with the
NDISulator:
ndis0: <NETGEAR PA301 Phoneline10X PCI Adapter> mem 0xda004000-0xda004fff irq 10 at device 9.0 on pci0
This is that notoriously undocumented 10Mbps HomePNA Broadcom chipset
that people wanted support for many moons ago. Sadly, the only other
HomePNA NIC I have handy is a 1Mbps device, so I can't actually do
any 10Mbps performance tests, but it talks to my 1Mbps ADMtek card
just fine.
evaluate them. Whatever they're meant to do, they're doing it wrong.
Also:
- Clean up last bits of NULL fallout in subr_pe
- Don't let ndis_ifmedia_sts() do anything if the IFF_UP flag isn't set
- Implement NdisSystemProcessorCount() and NdisQueryMapRegisterCount().
packet being freed has NDIS_STATUS_PENDING in the status field of
the OOB data. Finish implementing the "alternative" packet-releasing
function so it doesn't crash.
For those that are curious about ndis0: <ORiNOCO 802.11abg ComboCard Gold>:
1123 packets transmitted, 1120 packets received, 0% packet loss
round-trip min/avg/max/stddev = 3.837/6.146/13.919/1.925 ms
Not bad!
- Fix ndis_time().
- Implement NdisGetSystemUpTime().
- Implement RtlCopyUnicodeString() and RtlUnicodeStringToAnsiString().
- In ndis_getstate_80211(), use sc->ndis_link to determine connect
status.
Submitted by: Brian Feldman <green@freebsd.org>
- Add explicit cardbus attachment in if_ndis.c
- Clean up after moving bus_setup_intr() in ndis_attach().
- When setting an ssid, program an empty ssid as a 1-byte string
with a single 0 byte. The Microsoft documentation says this is
how you're supposed to tell the NIC to attach to 'any' ssid.
- Keep trace of callout handles for timers externally from the
ndis_miniport_timer structs, and run through and clobber them
all after invoking the haltfunc just in case the driver left one
running. (We need to make sure all timers are cancelled on driver
unload.)
- Handle the 'cancelled' argument in ndis_cancel_timer() correctly.
supposed to be opaque to the driver, however it is exposed through
several macros which expect certain behavior. In my original
implementation, I used the mappedsystemva member of the structure
to hold a pointer to the buffer and bytecount to hold the length.
It turns out you must use the startva pointer to point to the
page containing the start of the buffer and set byteoffset to
the offset within the page where the buffer starts. So, for a buffer
with address 'baseva,' startva is baseva & ~(PAGE_SIZE -1) and
byteoffset is baseva & (PAGE_SIZE -1). We have to maintain this
convention everywhere that ndis_buffers are used.
Fortunately, Microsoft defines some macros for initializing and
manipulating NDIS_BUFFER structures in ntddk.h. I adapted some
of them for use here and used them where appropriate.
This fixes the discrepancy I observed between how RX'ed packet sizes
were being reported in the Broadcom wireless driver and the sample
ethernet drivers that I've tested. This should also help the
Intel Centrino wireless driver work.
Also try to properly initialize the 802.11 BSS and IBSS channels.
(Sadly, the channel value is meaningless since there's no way
in the existing NDIS API to get/set the channel, but this should
take care of any 'invalid channel (NULL)' messages printed on
the console.
In NdisQueryBuffer() and NdisQueryBufferSafe(), the vaddr argument is
optional, so test it before trying to dereference it.
Also correct NdisGetFirstBufferFromPacket()/NdisGetFirstBufferFromPacketSafe():
we need to use nb_mappedsystemva from the buffer, not nb_systemva.
routines: NdisUnchainBufferAtBack(), NdisGetFirstBufferFromPacketSafe()
and NdisGetFirstBufferFromPacket(). This should bring us a little
closer to getting the Intel centrino wireless NIC to work.
Note: I have not actually tested these additions since I don't
have a driver that calls them, however they're pretty simple, and
one of them is taken pretty much directly from the Windows ndis.h
header file, so I'm fairly confident they work, but disclaimers
apply.
- Make ndis_get_info()/ndis_set_info() sleep on the setdone/getdone
routines if they get back NDIS_STATUS_PENDING.
- Add a bunch of net80211 support so that 802.11 cards can be twiddled
with ifconfig. This still needs more work and is not guaranteed to
work for everyone. It works on my 802.11b/g card anyway.
The problem here is Microsoft doesn't provide a good way to a) learn
all the rates that a card supports (if it has more than 8, you're
kinda hosed) and b) doesn't provide a good way to distinguish between
802.11b, 802.11b/g an 802.11a/b/g cards, so you sort of have to guess.
Setting the SSID and switching between infrastructure/adhoc modes
should work. WEP still needs to be implemented. I can't find any API
for getting/setting the channel other than the registry/sysctl keys.
NdisAnsiStringToUnicodeString(), NdisWriteConfiguration().
Also add stubs for NdisMGetDeviceProperty(), NdisTerminateWrapper(),
NdisOpenConfigurationKeyByName(), NdisOpenConfigurationKeyByIndex()
and NdisMGetDeviceProperty().
- fix ndis_time() so that it returns a time based on the proper
epoch (wacky though it may be)
- implement NdisInitializeString() and NdisFreeString(), and add
stub for NdisMRemoveMiniport()
ntoskrnl_var.h:
- add missing member to the general_lookaside struct (gl_listentry)
subr_ntoskrnl.c:
- Fix arguments to the interlocked push/pop routines: 'head' is an
slist_header *, not an slist_entry *
- Kludge up _fastcall support for the push/pop routines. The _fastcall
convention is similar to _stdcall, except the first two available
DWORD-sized arguments are passed in %ecx and %edx, respectively.
One kludge for this __attribute__ ((regparm(3))), however this
isn't entirely right, as it assumes %eax, %ecx and %edx will be
used (regparm(2) assumes %eax and %edx). Another kludge is to
declare the two fastcall-ed args as local register variables and
explicitly assign them to %ecx and %edx, but experimentation showed
that gcc would not guard %ecx and %edx against being clobbered.
Thus, I came up with a 3rd kludge, which is to use some inline
assembly of the form:
void *arg1;
void *arg2;
__asm__("movl %%ecx, %%ecx" : "=c" (arg1));
__asm__("movl %%edx, %%edx" : "=d" (arg2));
This lets gcc know that we're going to reference %ecx and %edx and
that it should make an effort not to let it get trampled. This wastes
an instruction (movl %reg, %reg is a no-op) but insures proper
behavior. It's possible there's a better way to do this though:
this is the first time I've used inline assembler in this fashion.
The above fixes to ntoskrnl_var.h an subr_ntoskrnl.c make lookaside
lists work for the two drivers I have that use them, one of which
is an NDIS 5.0 miniport and another which is 5.1.
subr_ndis.c: NdisGetCurrentSystemTime() which, according to the
Microsoft documentation returns "the number of 100 nanosecond
intervals since January 1, 1601." I have no idea what's so special
about that epoch or why they chose 100 nanosecond ticks. I don't
know the proper offset to convert nanotime() from the UNIX epoch
to January 1, 1601, so for now I'm just doing the unit convertion
to 100s of nanoseconds.
subr_ntoskrnl.c: memcpy(), memset(), ExInterlockedPopEntrySList(),
ExInterlockedPushEntrySList().
The latter two are different from InterlockedPopEntrySList()
and InterlockedPushEntrySList() in that they accept a spinlock to
hold while executing, whereas the non-Ex routines use a lock
internal to ntoskrnl. I also modified ExInitializePagedLookasideList()
and ExInitializeNPagedLookasideList() to initialize mutex locks
within the lookaside structures. It seems that in NDIS 5.0,
the lookaside allocate/free routines ExInterlockedPopEntrySList()
and ExInterlockedPushEntrySList(), which require the use of the
per-lookaside spinlock, whereas in NDIS 5.1, the per-lookaside
spinlock is deprecated. We need to support both cases.
Note that I appear to be doing something wrong with
ExInterlockedPopEntrySList() and ExInterlockedPushEntrySList():
they don't appear to obtain proper pointers to their arguments,
so I'm probably doing something wrong in terms of their calling
convention (they're declared to be FASTCALL in Widnows, and I'm
not sure what that means for gcc). It happens that in my stub
lookaside implementation, they don't need to do any work anyway,
so for now I've hacked them to always return NULL, which avoids
corrupting the stack. I need to do this right though.
it's an error to set the buffer bytecount to anything larger than
the buffer's original allocation size, but anything less than that
is ok.
Also, in ndis_ptom(), use the same logic: if the bytecount is
larger than the allocation size, consider the bytecount invalid
and the allocation size as the packet fragment length (m_len)
instead of the bytecount.
This corrects a consistency problem between the Broadcom wireless
driver and some of the ethernet drivers I've tested: the ethernet
drivers all report the packet frag sizes in buf->nb_bytecount, but
the Broadcom wireless driver reports them in buf->nb_size. This
seems like a bug to me, but it clearly must work in Windows, so
we have to deal with it here too.
Yes, it's what you think it is. Yes, you should run away now.
This is a special compatibility module for allowing Windows NDIS
miniport network drivers to be used with FreeBSD/x86. This provides
_binary_ NDIS compatibility (not source): you can run NDIS driver
code, but you can't build it. There are three main parts:
sys/compat/ndis: the NDIS compat API, which provides binary
compatibility functions for many routines in NDIS.SYS, HAL.dll
and ntoskrnl.exe in Windows (these are the three modules that
most NDIS miniport drivers use). The compat module also contains
a small PE relocator/dynalinker which relocates the Windows .SYS
image and then patches in our native routines.
sys/dev/if_ndis: the if_ndis driver wrapper. This module makes
use of the ndis compat API and can be compiled with a specially
prepared binary image file (ndis_driver_data.h) containing the
Windows .SYS image and registry key information parsed out of the
accompanying .INF file. Once if_ndis.ko is built, it can be loaded
and unloaded just like a native FreeBSD kenrel module.
usr.sbin/ndiscvt: a special utility that converts foo.sys and foo.inf
into an ndis_driver_data.h file that can be compiled into if_ndis.o.
Contains an .inf file parser graciously provided by Matt Dodd (and
mercilessly hacked upon by me) that strips out device ID info and
registry key info from a .INF file and packages it up with a binary
image array. The ndiscvt(8) utility also does some manipulation of
the segments within the .sys file to make life easier for the kernel
loader. (Doing the manipulation here saves the kernel code from having
to move things around later, which would waste memory.)
ndiscvt is only built for the i386 arch. Only files.i386 has been
updated, and none of this is turned on in GENERIC. It should probably
work on pc98. I have no idea about amd64 or ia64 at this point.
This is still a work in progress. I estimate it's about %85 done, but
I want it under CVS control so I can track subsequent changes. It has
been tested with exactly three drivers: the LinkSys LNE100TX v4 driver
(Lne100v4.sys), the sample Intel 82559 driver from the Windows DDK
(e100bex.sys) and the Broadcom BCM43xx wireless driver (bcmwl5.sys). It
still needs to have a net80211 stuff added to it. To use it, you would
do something like this:
# cd /sys/modules/ndis
# make; make load
# cd /sys/modules/if_ndis
# ndiscvt -i /path/to/foo.inf -s /path/to/foo.sys -o ndis_driver_data.h
# make; make load
# sysctl -a | grep ndis
All registry keys are mapped to sysctl nodes. Sometimes drivers refer
to registry keys that aren't mentioned in foo.inf. If this happens,
the NDIS API module creates sysctl nodes for these keys on the fly so
you can tweak them.
An example usage of the Broadcom wireless driver would be:
# sysctl hw.ndis0.EnableAutoConnect=1
# sysctl hw.ndis0.SSID="MY_SSID"
# sysctl hw.ndis0.NetworkType=0 (0 for bss, 1 for adhoc)
# ifconfig ndis0 <my ipaddr> netmask 0xffffff00 up
Things to be done:
- get rid of debug messages
- add in ndis80211 support
- defer transmissions until after a status update with
NDIS_STATUS_CONNECTED occurs
- Create smarter lookaside list support
- Split off if_ndis_pci.c and if_ndis_pccard.c attachments
- Make sure PCMCIA support works
- Fix ndiscvt to properly parse PCMCIA device IDs from INF files
- write ndisapi.9 man page
