Commit Graph

11 Commits

Author SHA1 Message Date
Marius Strobl
8c1093fc50 - Import the common MII bitbang'ing code from NetBSD and convert drivers to
take advantage of it instead of duplicating it. This reduces the size of
  the i386 GENERIC kernel by about 4k. The only potential in-tree user left
  unconverted is xe(4), which generally should be changed to use miibus(4)
  instead of implementing PHY handling on its own, as otherwise it makes not
  much sense to add a dependency on miibus(4)/mii_bitbang(4) to xe(4) just
  for the MII bitbang'ing code. The common MII bitbang'ing code also is
  useful in the embedded space for using GPIO pins to implement MII access.
- Based on lessons learnt with dc(4) (see r185750), add bus barriers to the
  MII bitbang read and write functions of the other drivers converted in
  order to ensure the intended ordering. Given that register access via an
  index register as well as register bank/window switching is subject to the
  same problem, also add bus barriers to the respective functions of smc(4),
  tl(4) and xl(4).
- Sprinkle some const.

Thanks to the following testers:
Andrew Bliznak (nge(4)), nwhitehorn@ (bm(4)), yongari@ (sis(4) and ste(4))
Thanks to Hans-Joerg Sirtl for supplying hardware to test stge(4).

Reviewed by:	yongari (subset of drivers)
Obtained from:	NetBSD (partially)
2011-11-01 16:13:59 +00:00
Nathan Whitehorn
6ac75c91b7 Remove some hacks to handle strange behavior of LXT 970 PHYs now better
handled in miibus after r221812. Thanks to marius@ for piecing this
together!
2011-05-12 14:27:28 +00:00
Nathan Whitehorn
cc734417b3 Do not use Open Firmware to open the device and instead program its start
on our own. This prevents hangs at boot when using a bm(4) NIC where the
cable is not plugged in at boot time.

Obtained from:	NetBSD
MFC after:	1 week
2011-05-06 03:26:24 +00:00
Marius Strobl
8e5d93dbb4 Convert the PHY drivers to honor the mii_flags passed down and convert
the NIC drivers as well as the PHY drivers to take advantage of the
mii_attach() introduced in r213878 to get rid of certain hacks. For
the most part these were:
- Artificially limiting miibus_{read,write}reg methods to certain PHY
  addresses; we now let mii_attach() only probe the PHY at the desired
  address(es) instead.
- PHY drivers setting MIIF_* flags based on the NIC driver they hang
  off from, partly even based on grabbing and using the softc of the
  parent; we now pass these flags down from the NIC to the PHY drivers
  via mii_attach(). This got us rid of all such hacks except those of
  brgphy() in combination with bce(4) and bge(4), which is way beyond
  what can be expressed with simple flags.

While at it, I took the opportunity to change the NIC drivers to pass
up the error returned by mii_attach() (previously by mii_phy_probe())
and unify the error message used in this case where and as appropriate
as mii_attach() actually can fail for a number of reasons, not just
because of no PHY(s) being present at the expected address(es).

Reviewed by:	jhb, yongari
2010-10-15 14:52:11 +00:00
Robert Watson
eb956cd041 Use if_maddr_rlock()/if_maddr_runlock() rather than IF_ADDR_LOCK()/
IF_ADDR_UNLOCK() across network device drivers when accessing the
per-interface multicast address list, if_multiaddrs.  This will
allow us to change the locking strategy without affecting our driver
programming interface or binary interface.

For two wireless drivers, remove unnecessary locking, since they
don't actually access the multicast address list.

Approved by:	re (kib)
MFC after:	6 weeks
2009-06-26 11:45:06 +00:00
Nathan Whitehorn
6b122703cc Fix bm_shutdown() KOBJ method to correspond to return int, as it should.
Found by:	Andriy Gapon
2009-02-04 22:16:27 +00:00
Nathan Whitehorn
1209e7e538 Change the way we enable the BMAC cell in macio. Instead of calling the
macio's enable-enet word, which apparently does nothing on some machines,
open an OF instance of the ethernet controller. This fixes cold booting
from disk on my Blue & White G3.

MFC after:	3 days
2008-10-13 17:33:55 +00:00
Nathan Whitehorn
f1dea04adb Change the DBDMA API to allow DBDMA registers in a subregion of a resource. This is necessary to allow future support of DMA for the various Apple on-board ATA controllers.
MFC after:	1 week
2008-09-23 02:12:47 +00:00
Nathan Whitehorn
20a94ecc79 Fix a multiple locking bug in bm(4) that could cause panics on a WITNESS-enabled kernel.
Approved by:	marcel (mentor)
MFC after:	1 day
2008-09-02 02:50:52 +00:00
Nathan Whitehorn
682d1bdb27 Fix some locking and logic bugs pointed out by jhb. These fix driver detach and speed up data transfer by nearly a factor of 2.
Approved by:	marcel (mentor)
2008-07-03 21:51:30 +00:00
Marcel Moolenaar
cf99524aed Add support for the Apple Big Mac (BMAC) Ethernet controller,
found on various Apple G3 models.

Submitted by:	Nathan Whitehorn
2008-06-07 22:58:32 +00:00