Commit Graph

117 Commits

Author SHA1 Message Date
Shawn Guo ca2cc33392 net/fec: add device tree probe support
It adds device tree probe support for fec driver.

Signed-off-by: Jason Liu <jason.hui@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: David S. Miller <davem@davemloft.net>
2011-07-27 09:31:08 +08:00
Shawn Guo 0ca1e290b7 net/fec: gasket needs to be enabled for some i.mx
On the recent i.mx (mx25/50/53), there is a gasket inside fec
controller which needs to be enabled no matter phy works in MII
or RMII mode.

The current code enables the gasket only when phy interface is RMII.
It's broken when the driver works with a MII phy.  The patch uses
platform_device_id to distinguish the SoCs that have the gasket and
enables it on these SoCs for both MII and RMII mode.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reported-by: Troy Kisky <troy.kisky@boundarydevices.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: David S. Miller <davem@davemloft.net>
2011-07-27 09:30:50 +08:00
Tobias Klauser 498d8e2363 drivers/net: Omit check for multicast bit in netdev_for_each_mc_addr
There is no need to check for the address being a multicast address in
the netdev_for_each_mc_addr loop, so remove it. This patch covers all
remaining network drivers still containing such a check.

Cc: Joe Perches <joe@perches.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-08 09:03:20 -07:00
Richard Cochran a0087a3619 fec: fix race in transmit time stamping.
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-19 16:35:30 -07:00
Richard Cochran 18a03b9772 fec: enable transmit and receive time stamping.
This patch has been tested on the Freescale M5234BCC, which includes the
National Semiconductor DP83640 with IEEE 1588 support.

Cc: Greg Ungerer <gerg@uclinux.org>
Cc: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
Cc: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
2011-06-13 17:26:13 -04:00
David S. Miller 0a0e9ae1bd Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/bnx2x/bnx2x.h
2011-03-03 21:27:42 -08:00
Axel Lin 9eb0e6f26e net/fec: fix unterminated platform_device_id table
The platform_device_id table is supposed to be zero-terminated.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-28 12:35:44 -08:00
Uwe Kleine-König 9721dbb375 net/fec: remove unused driver data
Apart from not being used the first argument isn't even a struct
platform_device *.

Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-17 21:47:24 +01:00
Uwe Kleine-König cd1f402c18 net/fec: enable flow control and length check on enet-mac
Also optimize not to reread the value written to FEC_R_CNTRL.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:31 +01:00
Uwe Kleine-König b3cde36cf1 net/fec: postpone unsetting driver data until the hardware is stopped
Reported-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:31 +01:00
Uwe Kleine-König d1ab1f54a1 net/fec: provide device for dma functions and matching sizes for map and unmap
This fixes warnings when CONFIG_DMA_API_DEBUG=y:

	NULL NULL: DMA-API: device driver tries to free DMA memory it has not allocated [device address=0x000000004781a020] [size=64 bytes]
	net eth0: DMA-API: device driver frees DMA memory with different size [device address=0x000000004781a020] [map size=2048 bytes] [unmap size=64 bytes]

Moreover pass the platform device to dma_{,un}map_single which makes
more sense because the logical network device doesn't know anything
about dma.

Passing the platform device was a suggestion by Lothar Waßmann.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:30 +01:00
Uwe Kleine-König 45993653bd net/fec: reorder functions a bit allows removing forward declarations
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:30 +01:00
Uwe Kleine-König db8880bc92 net/fec: some whitespace cleanup
A few of these were found and reported by Lothar Waßmann.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:30 +01:00
Uwe Kleine-König c556167f81 net/fec: consistenly name struct net_device pointers "ndev"
A variable named "dev" usually (usually subjective) points to a struct
device.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:30 +01:00
Uwe Kleine-König e497ba825b net/fec: add phy_stop to fec_enet_close
This undoes the effects of phy_start in fec_enet_open.

Reported-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:29 +01:00
Uwe Kleine-König 085e79ed88 net/fec: consolidate all i.MX options to CONFIG_ARM
Moreover stop listing all i.MX platforms featuring a FEC, and use
the platform's config symbol that selects registration of a fec device
instead.  This might make it easier to add new platforms.

Set default = y for ARMs having a fec to reduce defconfig sizes.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:29 +01:00
Uwe Kleine-König 24e531b401 net/fec: put the ioremap cookie immediately into a void __iomem pointer
Saving it first into struct net_device->base_addr (which is an unsigned
long) is pointless and only needs to use more casts than necessary.

Reported-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:29 +01:00
Uwe Kleine-König 8b06dc2b1c net/fec: no need to memzero private data
alloc_etherdev internally uses kzalloc, so the private data is already
zerod out.

Reported-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:28 +01:00
Uwe Kleine-König 04e5216d44 net/fec: no need to check for validity of ndev in suspend and resume
dev_set_drvdata is called unconditionally in the probe function and so
it cannot be NULL.

Reported-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:28 +01:00
Uwe Kleine-König b2b09ad63c net/fec: don't free an irq that failed to be requested
Reported-by: Lothar Waßmann <LW@KARO-elektronics.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:28 +01:00
Uwe Kleine-König 28e2188efc net/fec: release mem_region requested in probe in error path and remove
Reported-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:28 +01:00
Uwe Kleine-König 8a73b0bc86 net/fec: no need to cast arguments for memcpy
memcpy takes a const void * as 2nd argument.  So the argument is
converted automatically to void * anyhow.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2011-02-15 09:26:27 +01:00
Shawn Guo b5680e0b59 net/fec: add dual fec support for mx28
This patch is to add mx28 dual fec support. Here are some key notes
for mx28 fec controller.

 - The mx28 fec controller naming ENET-MAC is a different IP from FEC
   used on other i.mx variants.  But they are basically compatible
   on software interface, so it's possible to share the same driver.
 - ENET-MAC design on mx28 made an improper assumption that it runs
   on a big-endian system. As the result, driver has to swap every
   frame going to and coming from the controller.
 - The external phys can only be configured by fec0, which means fec1
   can not work independently and both phys need to be configured by
   mii_bus attached on fec0.
 - ENET-MAC reset will get mac address registers reset too.
 - ENET-MAC MII/RMII mode and 10M/100M speed are configured
   differently FEC.
 - ETHER_EN bit must be set to get ENET-MAC interrupt work.

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-09 15:42:56 -08:00
Shawn Guo bcc67771ed net/fec: improve pm for better suspend/resume
The following commit made a fix to use fec_enet_open/fec_enet_close
over fec_enet_init/fec_stop for suspend/resume, because fec_enet_init
does not allow to have a working network interface at resume.

  e3fe8558c7
  net/fec: fix pm to survive to suspend/resume

This fix works for i.mx/mxc fec controller, but fails on mx28 fec
which gets a different interrupt logic design. On i.mx fec, interrupt
can be triggered even bit ETHER_EN of ECR register is not set. But
on mx28 fec, ETHER_EN must be set to get interrupt work. Meanwhile,
MII interrupt is mandatory to resume the driver, because MDIO
read/write changed to interrupt mode by commit below.

  97b72e4320
  fec: use interrupt for MDIO completion indication

fec_restart/fec_stop comes out as the solution working for both
cases.

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-09 15:42:56 -08:00
Shawn Guo 49da97dcb6 net/fec: add mac field into platform data and consolidate fec_get_mac
Add mac field into fec_platform_data and consolidate function
fec_get_mac to get mac address in following order.

 1) module parameter via kernel command line fec.macaddr=0x00,0x04,...
 2) from flash in case of CONFIG_M5272 or fec_platform_data mac
    field for others, which typically have mac stored in fuse
 3) fec mac address registers set by bootloader

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-09 15:42:55 -08:00
Shawn Guo 8649a230e3 net/fec: remove the use of "index" which is legacy
The "index" becomes legacy since fep->pdev->id starts working
to identify the instance.

Moreover, the call of fec_enet_init(ndev, 0) always passes 0
to fep->index. This makes the following code in fec_get_mac buggy.

	/* Adjust MAC if using default MAC address */
	if (iap == fec_mac_default)
		dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->index;

It may be the time to remove "index" and use fep->pdev->id instead.

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-09 15:42:55 -08:00
Shawn Guo 862f0982ea net/fec: fix MMFR_OP type in fec_enet_mdio_write
FEC_MMFR_OP_WRITE should be used than FEC_MMFR_OP_READ in
a mdio write operation.

It's probably a typo introduced by commit:

e6b043d512
netdev/fec.c: add phylib supporting to enable carrier detection (v2)

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-09 15:42:54 -08:00
Greg Ungerer 6fcc040f02 net: allow FEC driver to use fixed PHY support
At least one board using the FEC driver does not have a conventional
PHY attached to it, it is directly connected to a somewhat simple
ethernet switch (the board is the SnapGear/LITE, and the attached
4-port ethernet switch is a RealTek RTL8305). This switch does not
present the usual register interface of a PHY, it presents nothing.
So a PHY scan will find nothing - it finds ID's of 0 for each PHY
on the attached MII bus.

After the FEC driver was changed to use phylib for supporting PHYs
it no longer works on this particular board/switch setup.

Add code support to use a fixed phy if no PHY is found on the MII bus.
This is based on the way the cpmac.c driver solved this same problem.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-13 09:56:31 -07:00
Oskar Schirmer 03c698c93f net/fec: carrier off initially to avoid root mount failure
with hardware slow in negotiation, the system did freeze
while trying to mount root on nfs at boot time.

the link state has not been initialised so network stack
tried to start transmission right away. this caused instant
retries, as the driver solely stated business upon link down,
rendering the system unusable.

notify carrier off initially to prevent transmission until
phylib will report link up.

Signed-off-by: Oskar Schirmer <oskar@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-10 21:12:27 -07:00
Wolfram Sang 4bee1f9ac0 net/fec: restore interrupt mask after software-reset in fec_stop()
After the change from mdio polling to irq, it became necessary to
restore the interrupt mask after resetting the chip in fec_stop().
Otherwise, with all irqs disabled, no communication with the PHY will be
possible after e.g. un-/replugging the cable and the device gets
stalled.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-22 14:14:46 -07:00
Richard Cochran 28b041139e net: preserve ifreq parameter when calling generic phy_mii_ioctl().
The phy_mii_ioctl() function unnecessarily throws away the original ifreq.
We need access to the ifreq in order to support PHYs that can perform
hardware time stamping.

Two maverick drivers filter the ioctl commands passed to phy_mii_ioctl().
This is unnecessary since phylib will check the command in any case.

Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-18 19:15:25 -07:00
Baruch Siach 97b72e4320 fec: use interrupt for MDIO completion indication
With the move to phylib (commit e6b043d) I was seeing sporadic "MDIO write
timeout" messages. Measure of the actual time spent showed latency times of
more than 1600us.

This patch uses the MII event indication of the FEC hardware to detect
completion of MDIO transactions.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-07-12 20:21:48 -07:00
Eric Benard 87cad5c385 net/fec: clean suspend/resume
Commit 59d4289b83 converted fec to dev_pm_ops but
didn't update the suspend/resume functions thus leading to the following warning :
"initialization from incompatible pointer type" when CONFIG_PM is set.

This patch also fixe a few indentation and style around CONFIG_PM area.

Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: netdev@vger.kernel.org
Cc: davem@davemloft.net
Cc: amit.kucheria@canonical.com
Cc: s.hauer@pengutronix.de
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-25 21:33:14 -07:00
David S. Miller eedc765ca4 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/sfc/net_driver.h
	drivers/net/sfc/siena.c
2010-06-06 17:42:02 -07:00
Denis Kirjanov 59d4289b83 fec: convert legacy PM hooks to dem_pm_ops
This patch compile tested only.

Convert legacy PM hooks to dev_pm_ops
Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-05 02:23:18 -07:00
Denis Kirjanov 1273d97674 fec: Cleanup PHY probing
Cleanup PHY probing: use helpers from phylib

Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-03 03:18:21 -07:00
Denis Kirjanov c7621cb3d9 fec: convert TX hook to netdev_tx_t
Convert TX hook return value to netdev_tx_t

Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-03 03:18:21 -07:00
Eric Bénard e3fe8558c7 net/fec: fix pm to survive to suspend/resume
* in the actual driver, calling fec_stop and fec_enet_init doesn't
allow to have a working network interface at resume (where a
ifconfig down and up is required to recover the interface)
* by using fec_enet_close and fec_enet_open, this patch solves this
problem and handle the case where the link changed between suspend
and resume
* this patch also disable clock at suspend and reenable it at resume

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-02 06:13:34 -07:00
Bryan Wu 418bd0d4df netdev/fec: fix ifconfig eth0 down hang issue
BugLink: http://bugs.launchpad.net/bugs/559065

In fec open/close function, we need to use phy_connect and phy_disconnect
operation before we start/stop phy. Otherwise it will cause system hang.

Only call fec_enet_mii_probe() in open function, because the first open
action will cause NULL pointer error.

Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-28 03:40:39 -07:00
Baruch Siach 5eb32bd059 fec: add support for PHY interface platform data
The i.MX25 PDK uses RMII to communicate with its PHY. This patch adds
the ability to configure RMII, based on platform data.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by:  Greg Ungerer <gerg@uclinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-24 00:36:13 -07:00
David S. Miller 278554bd65 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	Documentation/feature-removal-schedule.txt
	drivers/net/wireless/ath/ar9170/usb.c
	drivers/scsi/iscsi_tcp.c
	net/ipv4/ipmr.c
2010-05-12 00:05:35 -07:00
Eric Dumazet 1ae5dc342a net: trans_start cleanups
Now that core network takes care of trans_start updates, dont do it
in drivers themselves, if possible. Drivers can avoid one cache miss
(on dev->trans_start) in their start_xmit() handler.

Exceptions are NETIF_F_LLTX drivers

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-10 05:01:31 -07:00
Mattias Walström 7cff0943a1 FEC: Fix kernel panic in fec_set_mac_address.
Fix memory corruption that sometimes result in kernel panic.

Signed-off-by: Mattias Walström <mattias@vmlinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-05-05 00:55:48 -07:00
Jiri Pirko 22bedad3ce net: convert multicast list to list_head
Converts the list and the core manipulating with it to be the same as uc_list.

+uses two functions for adding/removing mc address (normal and "global"
 variant) instead of a function parameter.
+removes dev_mcast.c completely.
+exposes netdev_hw_addr_list_* macros along with __hw_addr_* functions for
 manipulation with lists on a sandbox (used in bonding and 80211 drivers)

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-03 14:22:15 -07:00
Bryan Wu e6b043d512 netdev/fec.c: add phylib supporting to enable carrier detection (v2)
BugLink: http://bugs.launchpad.net/bugs/457878

v2:
 - remove duplicated phy_speed caculation
 - fix the phy_speed caculation according to the DataSheet

v1:
 - removed old MII phy control code
 - add phylib supporting
 - add ethtool interface to make user space NetworkManager works

Tested on Freescale i.MX51 Babbage board.

This patch is based on a patch from Frederic Rodo <fred.rodo@gmail.com>

Cc: Frederic Rodo <fred.rodo@gmail.com>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
Acked-by: Amit Kucheria <amit.kucheria@canonical.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-01 19:53:13 -07:00
Jiri Pirko 48e2f183cb net: convert multiple drivers to use netdev_for_each_mc_addr, part4
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-22 15:45:52 -08:00
Jiri Pirko 4cd24eaf0c net: use netdev_mc_count and netdev_mc_empty when appropriate
This patch replaces dev->mc_count in all drivers (hopefully I didn't miss
anything). Used spatch and did small tweaks and conding style changes when
it was suitable.

Jirka

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-12 11:38:58 -08:00
Amit Kucheria fceb291919 fec: Add LAN8700 phy support
The i.MX51 babbage board has a FEC ethernet controller with this phy.

In the long term we should resurrect the phylib patches for fec.

Signed-off-by: Amit Kucheria <amit.kucheria@canonical.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-10 13:05:42 -08:00
Rob Herring 633e7533ce fec: fix uninitialized rx buffer usage
The fec driver was enabling receive buffer descriptor without allocating
the buffers. Make sure the buffer descriptors are initialized to not
start receiving packets.

Open also calls fec_restart after the rx buffers are allocated. With the code
in fec_restart, it zeroes out the buffer descriptors that have just been
setup.

Signed-off-by: Rob Herring <r.herring@freescale.com>
Signed-off-by: Amit Kucheria <amit.kucheria@canonical.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-02-10 13:05:42 -08:00
Steven King 78abcb13dd net: fix section mismatch in fec.c
fec_enet_init is called by both fec_probe and fec_resume, so it
shouldn't be marked as __init.

Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-20 18:51:37 -07:00