Commit Graph

34 Commits

Author SHA1 Message Date
Nate Lawson
5f96beb9e0 Convert callers to the new bus_alloc_resource_any(9) API.
Submitted by:	Mark Santcroos <marks@ripe.net>
Reviewed by:	imp, dfr, bde
2004-03-17 17:50:55 +00:00
Scott Long
474e30f0b1 All three of these drivers abused cv_waitq_empty in the same way by spinning
on it in hopes of making sure that the waitq was empty before going on.
This wasn't needed and probably never would have worked as intended.  Now
that cv_waitq_empty() and friends are gone, the code in these drivers that
spins on it can go away too.  This should unbreak LINT.

Discussed with:	kan
2004-02-29 09:26:01 +00:00
Alfred Perlstein
3939094dfb change NULL to 0 to silence warning. 2003-12-24 18:23:02 +00:00
Hartmut Brandt
d7af3b881c Make the driver conditionally MPSAFE. MPSAFEty defaults to not-mpsafe
but can be enabled by setting hw.atm.hatmN.mpsafe in the kernel
environment to a non-zero value before loading the driver. When
the problems with network MPSAFEty have been sorted out this will
be removed and the driver will default to MPSAFE.
2003-11-05 11:47:31 +00:00
Hartmut Brandt
8e994188e2 When compiled with debugging trace the number of transmit mbufs that
we own. Warn if something strange happens (number drops below zero or
there appears to be a leak).
2003-11-05 11:43:06 +00:00
Hartmut Brandt
0144e71085 Initialize the USED flag in new external receive buffers to 0, not to 1.
We put them directly onto the free list instead of calling the
external mbuf free routine (that routine would have cleaned the flag).

This fixes a bug which manifests itself in falsely reporting a lot of used
buffers when configuring the interface down.
2003-11-05 11:15:47 +00:00
Brooks Davis
9bf40ede4a Replace the if_name and if_unit members of struct ifnet with new members
if_xname, if_dname, and if_dunit. if_xname is the name of the interface
and if_dname/unit are the driver name and instance.

This change paves the way for interface renaming and enhanced pseudo
device creation and configuration symantics.

Approved By:	re (in principle)
Reviewed By:	njl, imp
Tested On:	i386, amd64, sparc64
Obtained From:	NetBSD (if_xname)
2003-10-31 18:32:15 +00:00
Hartmut Brandt
fba6dd7f18 Fix breakage on ia64: PAGE_SIZE on ia64 is large enough that more than
256 raw receive buffers (96 byte each) fit into one page. This breaks the
limit imposed by the usage of an uint8_t for the buffer number. Restrict
the allocation size for buffers to a maximum of 8192.
2003-10-31 13:35:22 +00:00
Hartmut Brandt
cc3f6cb9fd Explain why the lock-free allocation algorithm is safe in our case
while beeing not safe in the general case. Thanks to David Schultz
<das@freebsd.org> for help.
2003-10-30 16:19:50 +00:00
Hartmut Brandt
62b93d9b12 Reinvent the used-flag for external mbufs. This and the on-card flag
are now in the header of the external buffer itself which allows us
to manipulate them in the free routine without having to lock the softc
structure or the free list. To get space for these flags the chunk number
is reduced to 8 bit which amounts to a maximum of 256 chunks per allocated
page. This restriction is now enforced by a CTASSERT.
2003-10-30 10:43:52 +00:00
Hartmut Brandt
d976286c77 Allow sending of more than one raw cell from a single mbuf. Only the
very first cell in the mbuf should have a cell header word (of which
everything except the payload type and the CLP bit is ignored). All
other cells should be 48 byte and get the same header as the first cell.

This fixes a problem with sending more than 120000 raw cells/sec through
an HE155. The card seems to need 2 cell times to DMA the transmit buffer
ready queue entry and the transmit buffer descriptor so at 1/3 the
link rate the transmit buffer ready queue starts to fill up. Even with this
patch it's obviously impossible to send raw cells at link rate.
2003-10-29 15:15:19 +00:00
Hartmut Brandt
cb79e7478d Remove a superfluous ) from the previous commit. This was obviously
a result of the current solar storm.
2003-10-29 15:11:26 +00:00
Hartmut Brandt
278bc3c3a9 Make the maximum number of pages for external mbufs configurable in
the kernel environment and accessible as a RO sysctl.

Explain that the HE155 will not work in 64-bit/66MHz slots, but may work
in 64-bit/33MHz slots.
2003-10-29 15:07:10 +00:00
Hartmut Brandt
92d5836987 Make the value of the HATM_DEBUG symbol the default for the debugging
flags. Introduce a new debugging flag to dump received packets.
2003-10-29 14:33:41 +00:00
Hartmut Brandt
ac45adc11a Inline a function that was called only in one place directly into that place.
Correct a bug when the number of pages for external mbufs was
very large. In this case the page number could overflow into the large
buffer flag. Make this more unlikley by move that flag further away.
2003-10-29 14:28:26 +00:00
Hartmut Brandt
908b018b49 We have some space in the external mbufs so use this space for
the external buffer reference count. This saves us a malloc() + free()
per small receive mbuf.
2003-10-29 13:21:38 +00:00
Hartmut Brandt
7672807356 Defer allocation of the actual receive mbuf until the external buffer
is returned from the card to the driver. Add a counter that shows
how many times this allocation has failed. Note, that we could even
further delay the allocation of the mbuf until we know, that we need it
(there are no receive errors and the connection is open). This will be done
in a later commit.

Print the new statistics field in atmconfig.
2003-10-29 13:14:39 +00:00
Hartmut Brandt
d1f6e71f1d Get rid of the mutexes for the exernal buffer free lists. Use
atomic instructions instead. Remove the stuff used to track
whether an external mbuf travels through the system. This is
temporary only and will come back soon.
2003-10-29 12:59:44 +00:00
Hartmut Brandt
325014126d When we cannot allocate an external buffer (bacause we've hit
the maximum number of pages for buffers) return -1 instead of 0.
This fixes a panic under conditions when many mbufs are needed.

Update the head pointer of the receive buffer pool queue even when
we could not supply a buffer to the chip. Otherwise the chip will
not re-interrupt us for another try. A better strategy would probably
be to remember this condition and to supply buffers without an interrupt
as soon as buffers get available.
2003-10-27 16:21:59 +00:00
Hartmut Brandt
7298db81fe Sysctl names should not contain dots. Convert them to underlines. 2003-10-24 16:44:27 +00:00
John Baldwin
e27951b29c Use PCIR_BAR(x) instead of PCIR_MAPS.
Glanced over by:	imp, gibbs
Tested by:		i386 LINT
2003-09-02 17:30:40 +00:00
David E. O'Brien
aad970f1fe Use __FBSDID().
Also some minor style cleanups.
2003-08-24 17:55:58 +00:00
Warner Losh
77e6a3b2dd Prefer new location of pci include files (which have only been in the
tree for two or more years now), except in a few places where there's
code to be compatible with older versions of FreeBSD.
2003-08-22 06:00:27 +00:00
Hartmut Brandt
a80f653574 Make the driver preserve open connections accross ifconfig down
and up commands. When configuring the interface down only the
connections that are currently closing are deleted from the connection
table. When the interface is configured up, all connections that
are in the table are re-opened.
2003-08-07 13:42:31 +00:00
Hartmut Brandt
68ece75839 Remove the ATMIOCENA and ATMIOCDIS ioctl. Everyting has been converted
to use the new OPENVCC and CLOSEVCC calls that allow the sepcification
of traffic parameters for the connections.
2003-08-06 14:53:27 +00:00
Hartmut Brandt
b3eead8a06 Make the driver honor the ATMIO_FLAG_ASYNC that requests
asynchronuous open/close operations.
2003-08-06 13:16:51 +00:00
Hartmut Brandt
6662c0c12e Rearrange the fields in the vcc table entry to fit to the requirements
of the generic getvcc function and used that function instead of the home
grown.
2003-07-30 11:32:42 +00:00
Hartmut Brandt
2df0c5212a Generate events for carrier state, PVC state changes and flow control
changes. Still have to figure out, how to get at the ABR information.
2003-07-29 14:07:19 +00:00
Hartmut Brandt
b6e1558bf4 Remove the rather bogus statistics sysctl and merge it into the
internal driver statistics sysctl.
2003-07-29 14:05:45 +00:00
Hartmut Brandt
4f72640780 The card resets the S/Uni chip when it is resetted. Therefor
we need to reinitialize the PHY after the call to reset when
stopping the interface.
2003-07-17 13:43:16 +00:00
Hartmut Brandt
445b5e54cf Use the default arguments for lockfunc and lockfuncarg in
bus_dma_tag_create. We need to be sure that our packets are
kept in-sequence (that's how ATM is supposed to work) and
therefor use BUS_DMA_NOWAIT in all calls to bus_dmamap_load.

For memory allocated with bus_dmamem_alloc the use of anything
other than NULL arguments for the locking is anyway bogus because
this memory never should need bouncing and hence the load should never
be defered.

Allow the receipt of OAM and RM cells on raw connections. Caveat: it seems
that RM cells are still processed by the hardware even when we open the
connection as UBR.
2003-07-10 13:55:09 +00:00
Scott Long
f6b1c44d1f Mega busdma API commit.
Add two new arguments to bus_dma_tag_create(): lockfunc and lockfuncarg.
Lockfunc allows a driver to provide a function for managing its locking
semantics while using busdma.  At the moment, this is used for the
asynchronous busdma_swi and callback mechanism.  Two lockfunc implementations
are provided: busdma_lock_mutex() performs standard mutex operations on the
mutex that is specified from lockfuncarg.  dftl_lock() is a panic
implementation and is defaulted to when NULL, NULL are passed to
bus_dma_tag_create().  The only time that NULL, NULL should ever be used is
when the driver ensures that bus_dmamap_load() will not be deferred.
Drivers that do not provide their own locking can pass
busdma_lock_mutex,&Giant args in order to preserve the former behaviour.

sparc64 and powerpc do not provide real busdma_swi functions, so this is
largely a noop on those platforms.  The busdma_swi on is64 is not properly
locked yet, so warnings will be emitted on this platform when busdma
callback deferrals happen.

If anyone gets panics or warnings from dflt_lock() being called, please
let me know right away.

Reviewed by:	tmm, gibbs
2003-07-01 15:52:06 +00:00
Hartmut Brandt
1329537b7a Style: __FBSDID(). 2003-06-18 09:31:37 +00:00
Hartmut Brandt
c594298bee This is a driver for Fore/Marconi HE155 and HE622 ATM cards. It is full
busdma and has extensively been tested on i386 and sparc64.
2003-06-17 16:12:50 +00:00