PHY read/write functions can potentially sleep (e.g., a PHY accessed
via I2C). The following changes were made to account for this:
* Change spin locks to mutex locks
* Add a BUG_ON() to phy_read() phy_write() to warn against
calling them from an interrupt context.
* Use work queue for PHY state machine handling since
it can potentially sleep
* Change phydev lock from spinlock to mutex
Signed-off-by: Nate Case <ncase@xes-inc.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This Broadcom PHY is similar to other bcm54xx devices.
Signed-off-by: Nate Case <ncase@xes-inc.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
With that patch fixed.c now fully emulates MDIO bus, thus no need
to duplicate PHY layer functionality. That, in turn, drastically
simplifies the code, and drops down line count.
As an additional bonus, now there is no need to register MDIO bus
for each PHY, all emulated PHYs placed on the platform fixed MDIO bus.
There is also no more need to pre-allocate PHYs via .config option,
this is all now handled dynamically.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Lately I've got this nice badness on mdio bus removal:
Device 'e0103120:06' does not have a release() function, it is broken and must be fixed.
------------[ cut here ]------------
Badness at drivers/base/core.c:107
NIP: c015c1a8 LR: c015c1a8 CTR: c0157488
REGS: c34bdcf0 TRAP: 0700 Not tainted (2.6.23-rc5-g9ebadfbb-dirty)
MSR: 00029032 <EE,ME,IR,DR> CR: 24088422 XER: 00000000
...
[c34bdda0] [c015c1a8] device_release+0x78/0x80 (unreliable)
[c34bddb0] [c01354cc] kobject_cleanup+0x80/0xbc
[c34bddd0] [c01365f0] kref_put+0x54/0x6c
[c34bdde0] [c013543c] kobject_put+0x24/0x34
[c34bddf0] [c015c384] put_device+0x1c/0x2c
[c34bde00] [c0180e84] mdiobus_unregister+0x2c/0x58
...
Though actually there is nothing broken, it just device
subsystem core expects another "pattern" of resource managment.
This patch implement phy device's release function, thus
we're getting rid of this badness.
Also small hidden bug fixed, hope none other introduced. ;-)
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This kind of sucks, and prevents the Fedora installer from using the
device for network installs...
[root@efika phy]# iwconfig eth0
Warning: Driver for device eth0 has been compiled with an ancient version
of Wireless Extension, while this program support version 11 and later.
Some things may be broken...
eth0 ESSID:off/any Nickname:""
NWID:0 Channel:0 Access Point: 00:00:BF:81:14:E0
Bit Rate:-1.08206e+06 kb/s Sensitivity=0/0
RTS thr:off Fragment thr:off
Encryption key:<too big>
Power Management:off
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Previously, Internal Delay specification implied the delay be
applied to both TX and RX. This patch allows for separate TX/RX-only
internal delay specification.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Tested-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Li Yang <leoli@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
It gets quite verbose to see every single PHY driver being registered
by default.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Add PHY IDs for Marvell 88E1240. It seems to have close enough programming
models to 1111/1112 for basic support at least.
Also clean up whitespace in the ID list a bit.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Missing MODULE_LICENSE(), loading this module taints the kernel.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Previously, bitbanged MDIO was only supported in individual
hardware-specific drivers. This code factors out the higher level
protocol implementation, reducing the hardware-specific portion to
functions setting direction, data, and clock.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Ensure the PHY_HALTED state is not entered with the IRQ asserted as it
could lead to an interrupt loop.
There is a small window in phy_stop(), where the state of the PHY machine
indicates it has been halted, but its interrupt output might still be
unmasked. If an interrupt goes active right at this moment it will loop as
the phy_interrupt() handler exits immediately with IRQ_NONE if the halted
state is seen. It is unsafe to extend the phydev spinlock to cover
phy_interrupt(). It is safe to swap the order of the actions though as all
the competing places to unmask the interrupt output of the PHY, which are
phy_change() and phy_timer() are already covered with the lock as is the
sequence in question.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Andy Fleming <afleming@freescale.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Keep track of disable_irq_nosync() invocations and call enable_irq() the
right number of times if work has been cancelled that would include them.
Now that the call to flush_work_keventd() (problematic because of
rtnl_mutex being held) has been replaced by cancel_work_sync() another
issue has arisen and been left unresolved. As the MDIO bus cannot be
accessed from the interrupt context the PHY interrupt handler uses
disable_irq_nosync() to prevent from looping and schedules some work to be
done as a softirq, which, apart from handling the state change of the
originating PHY, is responsible for reenabling the interrupt. Now if the
interrupt line is shared by another device and a call to the softirq
handler has been cancelled, that call to enable_irq() never happens and the
other device cannot use its interrupt anymore as its stuck disabled.
I decided to use a counter rather than a flag because there may be more
than one call to phy_change() cancelled in the queue -- a real one and a
fake one triggered by free_irq() if DEBUG_SHIRQ is used, if nothing else.
Therefore because of its nesting property enable_irq() has to be called the
right number of times to match the number disable_irq_nosync() was called
and restore the original state. This DEBUG_SHIRQ feature is also the
reason why free_irq() has to be called before cancel_work_sync().
While at it I updated the comment about phy_stop_interrupts() being called
from `keventd' -- this is no longer relevant as the use of
cancel_work_sync() makes such an approach unnecessary. OTOH a similar
comment referring to flush_scheduled_work() in phy_stop() still applies as
using cancel_work_sync() there would be dangerous.
Checked with checkpatch.pl and at the run time (with and without
DEBUG_SHIRQ).
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Andy Fleming <afleming@freescale.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Use spin_lock_bh()/spin_unlock_bh() for the phydev lock throughout as it
is used in phy_timer() that is called as a softirq and all the other
operations may happen in the user context.
There has been a change recently that did such a conversion for some of the
operations on the lock, but some have been left intact. Many of them,
perhaps all, may be called in the user context and I was able to trigger
recursive spinlock acquisition indeed, so I think for the sake of long-term
maintenance it is best to convert them all, even if unnecessarily for one
or two -- better safe than sorry.
Perhaps one in phy_timer() could actually be skipped as only called as a
softirq -- I can send an update if that sounds like a good idea.
Checked with checkpatch.pl and at the runtime.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
device_bind_driver() error code returning has been fixed. release()
function has been written, so that to free resources in correct way; the
release path is now clean.
Before the rework, it used to cause
Device 'fixed@100:1' does not have a release() function, it is broken
and must be fixed.
BUG: at drivers/base/core.c:104 device_release()
Call Trace:
[<ffffffff802ec380>] kobject_cleanup+0x53/0x7e
[<ffffffff802ec3ab>] kobject_release+0x0/0x9
[<ffffffff802ecf3f>] kref_put+0x74/0x81
[<ffffffff8035493b>] fixed_mdio_register_device+0x230/0x265
[<ffffffff80564d31>] fixed_init+0x1f/0x35
[<ffffffff802071a4>] init+0x147/0x2fb
[<ffffffff80223b6e>] schedule_tail+0x36/0x92
[<ffffffff8020a678>] child_rip+0xa/0x12
[<ffffffff80311714>] acpi_ds_init_one_object+0x0/0x83
[<ffffffff8020705d>] init+0x0/0x2fb
[<ffffffff8020a66e>] child_rip+0x0/0x12
Also changed the notation of the fixed phy definition on
mdio bus to the form of <speed>+<duplex> to make it able to be used by
gianfar and ucc_geth that define phy_id strictly as "%d:%d" and cleaned up
the whitespace issues.
Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Export phy_mii_ioctl, so network drivers can use it when built
as modules too.
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Lock debugging finds a problem in phy.c and phy_device.c,
this patch fixes it. Tested on an AT91SAM9263-EK board,
kernel 2.6.23-rc4.
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Writing BMCR_RESET bit will reset MII_BMCR to default values. This is
clearly not what we want.
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
phy_read() returns a negative number if there's an error, but the
error-checking code in the Vitesse driver's config_intr function
triggers if phy_read() returns non-zero. Correct that.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The Vitesse PHY on the 8641D needs to be set up with internal delay to
work in RGMII mode. So we add skew when it is set to RGMII_ID mode.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Haruki Dai <Dai.Haruki@freescale.com>
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
The Vitesse 824x PHY doesn't allow an interrupt to be cleared if
the mask bit for that interrupt isn't set. This means that the PHY
Lib's order of handling interrupts (disable, then clear) breaks on this
PHY. However, clearing then disabling the interrupt opens up the code
for a silly race condition. So rather than change the PHY Lib, we change
the Vitesse driver so it always clears interrupts before disabling them.
Further, the ack function only clears the interrupt if interrupts are
enabled.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
Acked-by: Haiying Wang <Haiying.Wang@freescale.com>
Add 88E1112 PHY ID to the marvell driver. Seems to do fine with the
88E1111 inits.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Simplify the marvell driver init a bit: Make the supported devices an
array instead of explicitly registering each structure. This makes it
considerably easier to add new devices down the road.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
If connected via SGMII, initialize with SGMII mode configured.
Signed-off-by: Kapil Juneja <Kapil.Juneja@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The ICPlus IP175C sports a 100Mbit/s 4-port switch in addition
to a dedicated 100Mbit/s WAN port.
Signed-off-by: Michael Barkowski <michael.barkowski@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The phy_id specified for the Vitesse 824x PHY would never match because
it was expecting bits to be set that would be masked by the phy_id_mask.
Fix the phy_id so it will match properly, and changed the mdio_bus_match
to mask both the driver and devices phy_id with the mask so we dont have
this issue in the future.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Support for configuring RGMII-ID (RGMII with internal delay) mode on the
88e1111 and 88e1145. Ucc_geth on MPC8360EMDS(the main user of ucc_geth)
is broken after changed to use phylib. It is fixed by adding this
internal delay.
Also renamed 88e1111s -> 88e1111 (no references to an 88e1111s part were
found), and fixed some whitespace.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Correct the following compiler warning (and warnings resulting from
the correction):
warning: 'fixed_mdio_register_device' defined but not used
Signed-off-by: Denver Gingerich <denver@ossguy.com>
Cc: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Distinguish between the Davicom DM9161A PHY and the DM9161E.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Use menuconfigs instead of menus, so the whole menu can be disabled at once
instead of going through all options.
Signed-off-by: Jan Engelhardt <jengelh@gmx.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Disable some more menus in the configuration files that are of no
interest to a s390 machine.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
flush_work(wq, work) doesn't need the first parameter, we can use cwq->wq
(this was possible from the very beginnig, I missed this). So we can unify
flush_work_keventd and flush_work.
Also, rename flush_work() to cancel_work_sync() and fix all callers.
Perhaps this is not the best name, but "flush_work" is really bad.
(akpm: this is why the earlier patches bypassed maintainers)
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Auke Kok <auke-jan.h.kok@intel.com>,
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(akpm: bypassed maintainers, sorry. There are other patches which depend on
this)
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Function `phy_mii_ioctl' returns physical device's information based on
user requests. When requested to return the basic mode control register
information (BMCR), the original implementation only returns the physical
device's duplex information and forgets to return speed information, which
should not be because BMCR register is used to hold both duplex and speed
information.
The patch checks the BMCR value against speed-related flags and fills the
return structure's speed field accordingly.
Signed-off-by: Shan <shanlu@cs.uiuc.edu>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Convert function documentation in drivers/net/phy/ to kernel-doc
and add it to DocBook.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
The subsystem rwsem is not used by the driver core at all, so the use of
it in the phy code doesn't make any sense. They might possibly
want to use a local lock, but I am unsure about that.
Cc: netdev <netdev@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Changes include:
* New support for 88e1145
* New support for 88e111s
* Fixing 88e1101 driver to not match non-88e1101 PHYs
* Increases in feature support across Marvell PHY product line
* Fixes a bunch of whitespace issues found by Lindent
Signed-off-by: Andrew Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there. Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.
To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.
Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm. I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).
Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
sparse complains about differing types from prototype to
definition, so change the u32 to phy_interface_t:
drivers/net/phy/phy_device.c:140:19: error: symbol 'phy_connect' redeclared with different type (originally declared at include/linux/phy.h:362) - incompatible argument 5 (different signedness)
drivers/net/phy/phy_device.c:190:19: error: symbol 'phy_attach' redeclared with different type (originally declared at include/linux/phy.h:360) - incompatible argument 4 (different signedness)
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Updated direct resource pass with ioremap call, make it grant proper IRQ
mapping, stuff incompatible with the new approach were respectively put
under #ifndef CONFIG_PPC_MERGE. It is required so that both ppc and
powerpc could utilize fs_enet effectively.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
We need to export phy_ethtool_gset and phy_ethtool_sset to allow drivers that
use these functions to be built as modules.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
All kcalloc() calls of the form "kcalloc(1,...)" are converted to the
equivalent kzalloc() calls, and a few kcalloc() calls with the incorrect
ordering of the first two arguments are fixed.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Greg KH <greg@kroah.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This allows workqueue users to run just their own pending work, rather
than wait for the whole workqueue to finish running. This solves the
deadlock with networking libphy that was due to other workqueue entries
possibly needing a lock that was held by the routine that wanted to
flush its own work.
It's not wonderful: if you absolutely need to synchronize with the work
function having been executed, any user strictly speaking should have
its own completion tracking logic, since when we run things explicitly
by hand, the generic workqueue layer can no longer help us synchronize.
Also, this is strictly only usable for work that has been scheduled
without any delayed timers. You can not mix the new interface with
schedule_delayed_work().
But it's better than what we had currently.
Acked-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Conflicts:
drivers/ata/libata-scsi.c
include/linux/libata.h
Futher merge of Linus's head and compilation fixups.
Signed-Off-By: David Howells <dhowells@redhat.com>
Conflicts:
drivers/infiniband/core/iwcm.c
drivers/net/chelsio/cxgb2.c
drivers/net/wireless/bcm43xx/bcm43xx_main.c
drivers/net/wireless/prism54/islpci_eth.c
drivers/usb/core/hub.h
drivers/usb/input/hid-core.c
net/core/netpoll.c
Fix up merge failures with Linus's head and fix new compilation failures.
Signed-Off-By: David Howells <dhowells@redhat.com>
Most PHYs connect to an ethernet controller over a GMII or MII
interface. However, a growing number are connected over
different interfaces, such as RGMII or SGMII.
The ethernet driver will tell the PHY what type of connection it
is by setting it manually, or passing it in through phy_connect
(or phy_attach).
Changes include:
* Updates to documentation
* Updates to PHY Lib consumers
* Changes to PHY Lib to add interface support
* Some minor changes to whitespace in phy.h
* gianfar driver now detects interface and passes appropriate
value to PHY Lib
Signed-off-by: Andrew Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch requires the new support for configurable PHY
interfaces.
Changes include:
* New support for 88e1145
* New support for 88e111s
* Fixing 88e1101 driver to not match non-88e1101 PHYs
* Increases in feature support across Marvell PHY product line
* Fixes a bunch of whitespace issues found by Lindent
Signed-off-by: Andrew Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
* genphy_update_link is now exported
* Added a fix from ncase@xes-inc.com which changes forcing so it
only updates the link. Otherwise, it never tries the lower
values, since it is always overwriting the speed/duplex values
with the current ones, rather than the intended ones.
* Fixed a bug where bringing up a PHY with no link caused it to
timeout, and enter forcing mode. Once in forcing mode,
plugging in the link didn't autonegotiate. Now the AN state
detects the lack of link, and enters the NO_LINK state. AN
only times out if the link is up and AN fails
* Cleaned up the PHY_AN case, reducing one level of indentation
for the timeout code.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch fixes a couple of problems discovered with interrupt handling
in the phylib core, namely:
1. The driver uses timer and workqueue calls, but does not include
<linux/timer.h> nor <linux/workqueue.h>.
2. The driver uses schedule_work() for handling interrupts, but does not
make sure any pending work scheduled thus has been completed before
driver's structures get freed from memory. This is especially
important as interrupts may keep arriving if the line is shared with
another PHY.
The solution is to ignore phy_interrupt() calls if the reported device
has already been halted and calling flush_scheduled_work() from
phy_stop_interrupts() (but guarded with current_is_keventd() in case
the function has been called through keventd from the MAC device's
close call to avoid a deadlock on the netlink lock).
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
patch-mips-2.6.18-20060920-phy-irq-16
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch adds support for interrupt-driven operation of the Broadcom
Gigabit Ethernet PHYs. I have included device IDs for the parts used on
Broadcom SiByte evaluation boards; more can be added as a need arises.
They are apparently generally software-compatible with one another.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
patch-mips-2.6.18-20060920-broadcom-phy-15
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Fix various Kconfig typos.
Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
* Cleaned up interrupt mapping a little by adding a helper
function which parses the irq out of the device-tree, and puts
it into a resource.
* Changed the arch/ppc platform files to specify PHY_POLL, instead of -1
* Changed the fixed phy to use PHY_IGNORE_INTERRUPT
* Added ethtool.h and mii.h to phy.h includes
Signed-off-by: Paul Mackerras <paulus@samba.org>
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.
The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).
Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.
Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.
I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.
This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);
I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().
Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.
(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.
(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.
Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
While checking gcc 4.1 -Wextra warnings, I stumbled across the following
two warnings:
drivers/net/phy/phy_device.c:528: warning: comparison of unsigned expression < 0 is always false
drivers/net/phy/phy_device.c:546: warning: comparison of unsigned expression < 0 is always false
Since phy_read() returns an integer and can return negative values, it seems
to me the best way to get proper error handling working again is to make val
an int. Currently it is an u32, so the < 0 check always fails.
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This makes it possible for HW PHY-less boards to utilize PAL goodies. Generic
routines to connect to fixed PHY are provided, as well as ability to specify
software callback that fills up link, speed, etc. information into PHY
descriptor (the latter feature not tested so far).
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Prevent phylib from freeing PHY IRQ twice on closing an eth device:
phy_disconnect() first calls phy_stop_interrupts(), then it calls
phy_stop_machine() which in turn calls phy_stop_interrupts() making the
kernel complain on each bootup...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Add support for the Cicada 8201 PHY, a.k.a Vitesse VSC8201. This PHY is present on the MPC8349mITX.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
From: Uwe Zeisberger <Uwe_Zeisberger@digi.com>
The phy ids used are taken from an driver that used a right shift of 4 to chop
off the revision number. This driver does not shift, so the id and mask
values are wrong and must be left shifted by 4 to actually detect the chips.
Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com>
Acked-by: Andy Fleming <afleming@freescale.com>
[akpm: this is a previously-nacked patch, but the problem is real]
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (139 commits)
[POWERPC] re-enable OProfile for iSeries, using timer interrupt
[POWERPC] support ibm,extended-*-frequency properties
[POWERPC] Extra sanity check in EEH code
[POWERPC] Dont look for class-code in pci children
[POWERPC] Fix mdelay badness on shared processor partitions
[POWERPC] disable floating point exceptions for init
[POWERPC] Unify ppc syscall tables
[POWERPC] mpic: add support for serial mode interrupts
[POWERPC] pseries: Print PCI slot location code on failure
[POWERPC] spufs: one more fix for 64k pages
[POWERPC] spufs: fail spu_create with invalid flags
[POWERPC] spufs: clear class2 interrupt status before wakeup
[POWERPC] spufs: fix Makefile for "make clean"
[POWERPC] spufs: remove stop_code from struct spu
[POWERPC] spufs: fix spu irq affinity setting
[POWERPC] spufs: further abstract priv1 register access
[POWERPC] spufs: split the Cell BE support into generic and platform dependant parts
[POWERPC] spufs: dont try to access SPE channel 1 count
[POWERPC] spufs: use kzalloc in create_spu
[POWERPC] spufs: fix initial state of wbox file
...
Manually resolved conflicts in:
drivers/net/phy/Makefile
include/asm-powerpc/spu.h
new SMSC LAN83C185 10BaseT/100BaseTX PHY driver for the PHY subsystem
Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
make sure phy_map entries whose PHY address is masked are initialized
to NULL, given that other code (such as mdiobus_unregister for
instance) assumes that non-NULL phy_map entries are allocated
phy_devices
Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Add the PHY_ID_FMT macro to ensure that the format of the id string used by a
driver to match to its specific phy is consistent between the mdio_bus and the
driver.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Sanitize some s390 Kconfig options. We have ARCH_S390, ARCH_S390X,
ARCH_S390_31, 64BIT, S390_SUPPORT and COMPAT. Replace these 6 options by
S390, 64BIT and COMPAT.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Andy,
libphy has no license tag. Something like the attached (untested!) patch
is needed. Hopefully such a change finds its way into 2.6.15.
filename: /lib/modules/2.6.15-rc5-3-ppc64/kernel/drivers/net/phy/libphy.ko
vermagic: 2.6.15-rc5-3-ppc64 SMP gcc-4.1
depends:
srcversion: ACC921B5E82701BE1E6F603
drivers/net/phy/phy_device.c | 4 ++++
1 files changed, 4 insertions(+)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Adds a phy_mask field to struct mii_bus and uses it. This field
indicates each phy address to be ignored when probing the mdio bus.
This support is needed for the fs_enet and ibm_emac drivers to be
converted to the generic phy layer among other drivers. Many systems
lock up on probing certain phy addresses or probing doesn't return
0xffff when nothing is found at the address. A new driver I'm
working on also makes use of this mask.
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
In PM v1, all devices were called at SUSPEND_DISABLE level. Then
all devices were called at SUSPEND_SAVE_STATE level, and finally
SUSPEND_POWER_DOWN level. However, with PM v2, to maintain
compatibility for platform devices, I arranged for the PM v2
suspend/resume callbacks to call the old PM v1 suspend/resume
callbacks three times with each level in order so that existing
drivers continued to work.
Since this is obsolete infrastructure which is no longer necessary,
we can remove it. Here's an (untested) patch to do exactly that.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/net/phy/phy.c is broken on s390; it uses enable_irq() and friends
and these do not exist on s390. Marked as broken for now.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
When building with CONFIG_PHYLIB=y on Itanium, I see:
`mdio_bus_exit' referenced in section `.init.text' of
drivers/built-in.o: defined in discarded section `.exit.text' of
drivers/built-in.o
I believe that mdio_bus_exit should not be declared __exit, because it is
referencesd from __init sections in, say, phy_init().
Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Fix remaining bits of u32 vs. pm_message confusion. Should not break
anything.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds back the code that was taken out, thus re-enabling:
* The PHY Layer to initialize without crashing
* Drivers to actually connect to PHYs
* The entire PHY Control Layer
This patch is used by the gianfar driver, and other drivers which are in
development.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
ethernet drivers to remain as ignorant as is reasonable of the connected
PHY's design and operation details.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Nate Case