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History log of /src/sys/dev/mii/acphy.c
RevisionDateAuthorComments
 1.30  15-Mar-2020  thorpej Define and implement a locking protocol for the ifmedia / mii layers:
- MP-safe drivers provide a mutex to ifmedia that is used to serialize
access to media-related structures / hardware regsiters. Converted
drivers use the new ifmedia_init_with_lock() function for this. The
new name is provided to ease the transition.
- Un-converted drivers continue to call ifmedia_init(), which will supply
a compatibility lock to be used instead. Several media-related entry
points must be aware of this compatibility lock, and are able to acquire
it recursively a limited number of times, if needed. This is a SPIN
mutex with priority IPL_NET.
- This same lock is used to serialize access to PHY registers and other
MII-related data structures.

The PHY drivers are modified to acquire and release the lock, as needed,
and assert the lock is held as a diagnostic aid.

The "usbnet" framework has had an overhaul of its internal locking
protocols to fit in with the media / mii changes, and the drivers adapted.

USB wifi drivers have been changed to provide their own adaptive mutex
to the ifmedia later via a new ieee80211_media_init_with_lock() function.
This is required because the USB drivers need an adaptive mutex.

Besised "usbnet", a few other drivers are converted: vmx, wm, ixgbe / ixv.

mcx also now calls ifmedia_init_with_lock() because it needs to also use
an adaptive mutex. The mcx driver still needs to be fully converted to
NET_MPSAFE.
 1.29  27-Nov-2019  msaitoh - Simplify sc->mii_anegticks setting. Same as FreeBSD.

Don't set the default value not in the attach function. Instead, set the
default value (MII_ANEGTICKS) first in the beginning of the
mii_phy_add_media(). The function already has the code to change the value to
MII_ANEGTICKS_GIGE if it's gigabit capable.

- Remove extra pmf_device_register() call. It's done in mii_phy_add_media().
 1.28  25-Mar-2019  msaitoh KNF. No functional change.
 1.27  24-Feb-2019  christos use a macro to tidy up the phydesc array initialization, from FreeBSD
 1.26  22-Jan-2019  msaitoh Change MII PHY read/write API from:

int (*mii_readreg_t)(device_t, int, int);
void (*mii_writereg_t)(device_t, int, int, int);
to:

int (*mii_readreg_t)(device_t, int, int, uint16_t *);
int (*mii_writereg_t)(device_t, int, int, uint16_t);

Now we can test if a read/write operation failed or not by the return value.

In 802.3 spec says that the PHY shall not respond to read/write transaction
to the unimplemented register(22.2.4.3). Detecting timeout can be used to
check whether a register is implemented or not (if the register conforms to
the spec). ukphy(4) can be used this for MII_MMDACR and MII_MMDAADR.

Note that I noticed that the following code do infinite loop in the
read/wirte function. If it accesses unimplemented PHY register, it will hang.
It should be fixed:

arm/at91/at91emac.c
arm/ep93xx/epe.c
arm/omap/omapl1x_emac.c
mips/ralink/ralink_eth.c
arch/powerpc/booke/dev/pq3etsec.c(read)
dev/cadence/if_cemac.c <- hkenken
dev/ic/lan9118.c


Tested with the following device:

axe+ukphy
axe+rgephy
axen+rgephy (tested by Andrius V)
wm+atphy
wm+ukphy
wm+igphy
wm+ihphy
wm+makphy
sk+makphy
sk+brgphy
sk+gentbi
msk+makphy
sip+icsphy
sip+ukphy
re+rgephy
bge+brgphy
bnx+brgphy
gsip+gphyter
rtk+rlphy
fxp+inphy (tested by Andrius V)
tlp+acphy
ex+exphy
epic+qsphy
vge+ciphy (tested by Andrius V)
vr+ukphy (tested by Andrius V)
vte+ukphy (tested by Andrius V)

Not tested (MAC):
arm:at91emac
arm:cemac
arm:epe
arm:geminigmac
arm:enet
arm:cpsw
arm:emac(omac)
arm:emac(sunxi)
arm:npe
evbppc:temac
macppc:bm
macppc:gm
mips:aumac
mips:ae
mips:cnmac
mips:reth
mips:sbmac
playstation2:smap
powerpc:tsec
powerpc:emac(ibm4xx)
sgimips:mec
sparc:be
sf
ne(ax88190, dl10019)
awge
ep
gem
hme
smsh
mtd
sm
age
alc
ale
bce
cas
et
jme
lii
nfe
pcn
ste
stge
tl
xi
aue
mue
smsc
udav
url

Not tested (PHY):
amhphy
bmtphy
dmphy
etphy
glxtphy
ikphy
iophy
lxtphy
nsphyter
pnaphy
rdcphy
sqphy
tlphy
tqphy
urlphy
 1.25  07-Jul-2016  msaitoh branches: 1.25.16; 1.25.18;
KNF. Remove extra spaces. No functional change.
 1.24  16-Jun-2014  msaitoh branches: 1.24.4;
IFM_FDX and IFM_HDX use different bit, so set IFM_HDX bit if it's not full
duplex. For many drivers, it recognize half duplex if IFM_FDX isn't set,
but not for others. Same as {Free|Open}BSD.
 1.23  17-Nov-2008  dyoung branches: 1.23.22; 1.23.26; 1.23.40;
Reduce code duplication: most PHY drivers call mii_phy_add_media()
when they attach to the device tree, so call pmf_device_register(9)
once there instead of once in more than twenty drivers.
 1.22  04-May-2008  xtraeme branches: 1.22.6; 1.22.8;
device_t/softc split for all mii(4) devices, and other related
cosmetic changes.
 1.21  08-Apr-2008  cegger branches: 1.21.2; 1.21.4;
use aprint_*_dev and device_xname
 1.20  09-Dec-2007  jmcneill branches: 1.20.10;
Merge jmcneill-pm branch.
 1.19  16-Nov-2006  christos branches: 1.19.22; 1.19.24; 1.19.34; 1.19.36;
- don't hardcode 5, 10 define and use MII_ANEGTICKS{,_GIGE}
- instead of != limit, use <= limit (conservative)
 1.18  16-Nov-2006  christos __unused removal on arguments; approved by core.
 1.17  12-Oct-2006  christos - sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386
 1.16  29-Mar-2006  thorpej branches: 1.16.8; 1.16.10;
Use device_private().
 1.15  11-Dec-2005  christos branches: 1.15.4; 1.15.6; 1.15.8; 1.15.10; 1.15.12;
merge ktrace-lwp.
 1.14  23-Aug-2004  thorpej branches: 1.14.12;
Make use of static.
 1.13  29-Apr-2003  thorpej branches: 1.13.2;
Use aprint*().
 1.12  26-Jan-2003  matt Add support for Am79C87[45].
 1.11  17-Jan-2003  gendalia Add altima (broadcom) AC101L, phy for 3com 3c905cx-tx on nForce2 MCP-T
 1.10  02-Oct-2002  thorpej Add trailing ; to CFATTACH_DECL.
 1.9  30-Sep-2002  thorpej Use CFATTACH_DECL().
 1.8  27-Sep-2002  thorpej Declare all cfattach structures const.
 1.7  03-Jul-2002  simonb Don't include <malloc.h> - no memory management style functions are use
in any of the MII drivers.
 1.6  17-Apr-2002  wiz branches: 1.6.2;
Fix typo in comment. kern/16382 by Sean Davis.
 1.5  25-Mar-2002  thorpej Get flags passed down to PHY drivers correctly. This was done on
an adhoc basis in a couple of PHY drivers, this fixes it more generally.

Per a discussion w/ Cliff Neighbors <cliff@allegronetworks.com>.
 1.4  15-Dec-2001  augustss Add another Altima PHY. From Peter Seebach.
 1.3  13-Nov-2001  lukem add RCSID
 1.2  25-Aug-2001  thorpej branches: 1.2.4;
ANSI'ify.
 1.1  24-Aug-2001  thorpej branches: 1.1.2;
Driver for the Altima AC101 10/100 Ethernet PHY.
 1.1.2.7  10-Oct-2002  jdolecek sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work
 1.1.2.6  06-Sep-2002  jdolecek sync kqueue branch with HEAD
 1.1.2.5  23-Jun-2002  jdolecek catch up with -current on kqueue branch
 1.1.2.4  10-Jan-2002  thorpej Sync kqueue branch with -current.
 1.1.2.3  13-Sep-2001  thorpej Update the kqueue branch to HEAD.
 1.1.2.2  25-Aug-2001  thorpej Merge Aug 24 -current into the kqueue branch.
 1.1.2.1  24-Aug-2001  thorpej file acphy.c was added on branch kqueue on 2001-08-25 06:16:21 +0000
 1.2.4.9  17-Jan-2003  thorpej Sync with HEAD.
 1.2.4.8  18-Oct-2002  nathanw Catch up to -current.
 1.2.4.7  01-Aug-2002  nathanw Catch up to -current.
 1.2.4.6  20-Jun-2002  nathanw Catch up to -current.
 1.2.4.5  01-Apr-2002  nathanw Catch up to -current.
(CVS: It's not just a program. It's an adventure!)
 1.2.4.4  08-Jan-2002  nathanw Catch up to -current.
 1.2.4.3  14-Nov-2001  nathanw Catch up to -current.
 1.2.4.2  21-Sep-2001  nathanw Catch up to -current.
 1.2.4.1  25-Aug-2001  nathanw file acphy.c was added on branch nathanw_sa on 2001-09-21 22:35:48 +0000
 1.6.2.1  15-Jul-2002  gehenna catch up with -current.
 1.13.2.3  21-Sep-2004  skrll Fix the sync with head I botched.
 1.13.2.2  18-Sep-2004  skrll Sync with HEAD.
 1.13.2.1  25-Aug-2004  skrll Sync with HEAD.
 1.14.12.3  21-Jan-2008  yamt sync with head
 1.14.12.2  30-Dec-2006  yamt sync with head.
 1.14.12.1  21-Jun-2006  yamt sync with head.
 1.15.12.1  31-Mar-2006  tron Merge 2006-03-31 NetBSD-current into the "peter-altq" branch.
 1.15.10.1  19-Apr-2006  elad sync with head.
 1.15.8.1  01-Apr-2006  yamt sync with head.
 1.15.6.1  22-Apr-2006  simonb Sync with head.
 1.15.4.1  09-Sep-2006  rpaulo sync with head
 1.16.10.2  10-Dec-2006  yamt sync with head.
 1.16.10.1  22-Oct-2006  yamt sync with head
 1.16.8.1  18-Nov-2006  ad Sync with head.
 1.19.36.1  11-Dec-2007  yamt sync with head.
 1.19.34.1  26-Dec-2007  ad Sync with head.
 1.19.24.1  09-Jan-2008  matt sync with HEAD
 1.19.22.2  08-Dec-2007  jmcneill Rename pnp(9) -> pmf(9), as requested by many.
 1.19.22.1  27-Nov-2007  joerg Register MII PHY drives with the PM framework. Nothing to do on suspend,
just reset the PHY on resume.
 1.20.10.2  17-Jan-2009  mjf Sync with HEAD.
 1.20.10.1  02-Jun-2008  mjf Sync with HEAD.
 1.21.4.2  04-May-2009  yamt sync with head.
 1.21.4.1  16-May-2008  yamt sync with head.
 1.21.2.1  18-May-2008  yamt sync with head.
 1.22.8.1  19-Jan-2009  skrll Sync with HEAD.
 1.22.6.1  13-Dec-2008  haad Update haad-dm branch to haad-dm-base2.
 1.23.40.1  10-Aug-2014  tls Rebase.
 1.23.26.2  03-Dec-2017  jdolecek update from HEAD
 1.23.26.1  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.23.22.1  09-Nov-2014  martin Pull up following revision(s) (requested by msaitoh in ticket #1189):
sys/dev/pci/if_wm.c: revision 1.270
sys/dev/mii/inphy.c: revision 1.53
sys/dev/mii/glxtphy.c: revision 1.24
sys/dev/mii/tlphy.c: revision 1.62
sys/dev/mii/iophy.c: revision 1.37
sys/dev/mii/brgphy.c: revision 1.70
sys/dev/mii/ihphy.c: revision 1.8
sys/dev/mii/bmtphy.c: revision 1.31
sys/dev/mii/urlphy.c: revision 1.30
sys/dev/mii/makphy.c: revision 1.40
sys/dev/mii/qsphy.c: revision 1.48
sys/dev/mii/igphy.c: revision 1.23
sys/dev/mii/nsphy.c: revision 1.58
sys/dev/mii/mvphy.c: revision 1.10
sys/dev/pci/if_txp.c: revision 1.41
sys/dev/mii/nsphy.c: revision 1.59
sys/dev/mii/rlphy.c: revision 1.28
sys/dev/mii/icsphy.c: revision 1.49
sys/dev/mii/rlphy.c: revision 1.29
sys/dev/mii/lxtphy.c: revision 1.49
sys/dev/mii/ciphyreg.h: revision 1.5
sys/dev/mii/nsphyter.c: revision 1.38
sys/dev/mii/sqphy.c: revision 1.50
sys/dev/mii/gentbi.c: revision 1.26
sys/dev/mii/gentbi.c: revision 1.27
sys/dev/mii/tqphy.c: revision 1.39
sys/dev/mii/ikphy.c: revision 1.10
sys/dev/mii/dmphy.c: revision 1.35
sys/dev/mii/amhphy.c: revision 1.20
sys/dev/mii/acphy.c: revision 1.24
sys/dev/mii/ciphy.c: revision 1.25
sys/dev/mii/brgphyreg.h: revision 1.8
sys/dev/mii/ukphy_subr.c: revision 1.12
sys/dev/ic/rtl80x9.c: revision 1.16
sys/arch/mips/adm5120/dev/if_admsw.c: revision 1.12
sys/dev/pci/if_kse.c: revision 1.28
sys/dev/mii/ukphy_subr.c: revision 1.13
sys/dev/mii/mii.h: revision 1.18
sys/dev/mii/gphyter.c: revision 1.29
No functional change:
- Fix typo.
- Remove trailing white spaces.
- Capitalize comments.
- Tabify.
- KNF.
IFM_FDX and IFM_HDX use different bit, so set IFM_HDX bit if it's not full
duplex. For many drivers, it recognize half duplex if IFM_FDX isn't set,
but not for others. Same as {Free|Open}BSD.
 1.24.4.1  09-Jul-2016  skrll Sync with HEAD
 1.25.18.2  08-Apr-2020  martin Merge changes from current as of 20200406
 1.25.18.1  10-Jun-2019  christos Sync with HEAD
 1.25.16.1  26-Jan-2019  pgoyette Sync with HEAD

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