Commit graph

335761 commits

Author SHA1 Message Date
Linus Torvalds
66b6a0c979 Bug-fixes:
* Use appropriate macros instead of hand-rolling our own (ARM).
  * Fixes if FB/KBD closed unexpectedly.
  * Fix memory leak in /dev/gntdev ioctl calls.
  * Fix overflow check in xenbus_file_write.
  * Document cleanup.
  * Performance optimization when migrating guests.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQEcBAABAgAGBQJQk9ngAAoJEFjIrFwIi8fJXOcH/jEmTaV2rbUCCnnivlQGj5B2
 AAXt03MM2F7Ohifo8IEHDhvJlUqQnglQq4wcku/8X/bqSkxtqJMfa/UAStmS2e6r
 605msiMws/GKiDPgKywWHjMPk7JJow/T7du9mpT2Swla12+DXc7e0P6Sqm6qGtB5
 tCBFYe3CS+j8Xi/siPhveAoLoDVmC8RpNzV8EWBdUKhNeD6U4s5M3+ChVexOrB/6
 43YkzurkY/FOsP+8YhNnKFSFrpYleRB1GdFcr8PN5mv85sNKts7vHCb4qJFzZdbk
 BMImdLrTUnKArE4y4FS0iqabOTGXaUplEXfyxDw5hweESGa1qzrd29ocyMQ5p/U=
 =LQxc
 -----END PGP SIGNATURE-----

Merge tag 'stable/for-linus-3.7-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

Pull Xen bugfixes from Konrad Rzeszutek Wilk:
 - Use appropriate macros instead of hand-rolling our own (ARM).
 - Fixes if FB/KBD closed unexpectedly.
 - Fix memory leak in /dev/gntdev ioctl calls.
 - Fix overflow check in xenbus_file_write.
 - Document cleanup.
 - Performance optimization when migrating guests.

* tag 'stable/for-linus-3.7-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/mmu: Use Xen specific TLB flush instead of the generic one.
  xen/arm: use the __HVC macro
  xen/xenbus: fix overflow check in xenbus_file_write()
  xen-kbdfront: handle backend CLOSED without CLOSING
  xen-fbfront: handle backend CLOSED without CLOSING
  xen/gntdev: don't leak memory from IOCTL_GNTDEV_MAP_GRANT_REF
  x86: remove obsolete comment from asm/xen/hypervisor.h
2012-11-02 13:26:11 -07:00
Sasha Levin
d9b482c8ba hashtable: introduce a small and naive hashtable
This hashtable implementation is using hlist buckets to provide a simple
hashtable to prevent it from getting reimplemented all over the kernel.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
[ Merging this now, so that subsystems can start applying Sasha's
  patches that use this   - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-02 12:44:51 -07:00
Al Viro
1d72d9f83d frv: fix the broken preempt
Just get %icc2 into the state we would have after local_irq_disable()
and physical IRQ having happened since then.  Then we can simply
use preempt_schedule_irq() and be done with the whole mess.

Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-02 12:08:25 -04:00
Al Viro
7b7ade1179 frv: switch to saner kernel_execve() semantics
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-11-02 12:05:04 -04:00
David Howells
e7aa51b2e5 FRV: Fix the new-style kernel_thread() stuff
The kernel_thread() changes for FRV don't work, and FRV fails to boot,
starting with:

	commit 02ce496f15
	Author: Al Viro <viro@zeniv.linux.org.uk>
	Date:   Tue Sep 18 22:18:51 2012 -0400
	Subject: frv: split ret_from_fork, simplify kernel_thread() a lot

The problem is that the userspace registers are completely cleared when a
kernel thread is created and all subsequent user threads are then copied from
that.  Unfortunately, however, the TBR and PSR registers are restored from the
pt_regs and the values they should be set to are clobbered by the memset.

Instead, copy across the old user registers as normal, and then merely alter
GR8 and GR9 in it if we're going to execute a kernel thread.

Signed-off-by: David Howells <dhowells@redhat.com>
2012-11-02 13:20:43 +00:00
David Howells
1ee6f5669a FRV: Fix the preemption handling
Fix the preemption handling in FRV code where the PREEMPT_ACTIVE value is
incorrectly loaded into the threadinfo flags rather than the threadinfo
preemption count.

Unfortunately, the code cannot be simply converted to use
preempt_schedule_irq() as is because FRV uses virtual interrupt disablement to
cut down on the cost of actually disabling interrupts and thus
local_irq_enable() doesn't actually enable interrupts.

Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Al Viro <viro@ZenIV.linux.org.uk>
2012-11-02 13:20:42 +00:00
David Howells
eded09ccf5 FRV: gcc-4.1.2 also inlines weak functions
gcc-4.1.2 inlines weak functions, which causes FRV to fail when the dummy
thread_info_cache_init() gets inlined into start_kernel().

Signed-off-by: David Howells <dhowells@redhat.com>
2012-11-02 13:20:42 +00:00
David Howells
5f0231d97b FRV: Don't objcopy the GNU build_id note
Don't let objcopy transfer the GNU build_id note into the loadable image as it
is located at address 0 and the image ends up >3G in size.

Signed-off-by: David Howells <dhowells@redhat.com>
2012-11-02 13:20:42 +00:00
David Howells
a5788caa26 FRV: Add missing linux/export.h #inclusions
Add missing linux/export.h #inclusions to the FRV arch.

Signed-off-by: David Howells <dhowells@redhat.com>
2012-11-02 13:20:42 +00:00
Linus Torvalds
c660b8f944 Xtensa patchset for 3.7-rc4
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIcBAABAgAGBQJQkvQbAAoJEI9vqH3mFV2slX0P/1trXh121qyahs82VY3t7iDN
 z4hxO7DW+xum3NYvuJx5/egkkl3NiS1Wyq47RIEdIgI/Isr0tenvmG3f2czl3Qtj
 omcNJtLKVo7WxODnl16S6VGDvyRA4OkxzVGD9eidD8Z4+jXLvYyL4WKPiO5SEzTi
 jA54j4w+mk2mpFw/5w4IjmDFr7zBKI7ewL7aJ32spcacT+onzSnQzWyod/30cEen
 krmMr7M+jBUfGweWYRsM4ur9vf2cNECXQSFMMssDsKd1kHKQmf8lS1qy2rC5PX15
 0uK1s/AvzrbTl+PxRg4L/m/R//owdaT3w1mUXQd2LyZdgXq/qAvcPNg+DygIl+MJ
 uL+Bb+CD5g7G4YGNTY15oShLUaxVGwZzKV0Xgw0jZYkKgCO8gEduRUlSP3IpVdbD
 0kulkyMJoIvw93p8af/ey8YD3YfAaS/qCn4qwQ6UJG7G32ATDDsF093q+y3m6DiX
 mPx6i2BY7Jmr2uSiac4eU6L7Myu+JthUwjhfIC9NCwY7nV0mlsq53fKJt8/5Tuu5
 MwzorUFTfJkKXaVNhATkVA+E4uTbQhqxvFxzNe+8ojwSIeN758LR80zrRTe5fwQx
 qJdyBytLZF8YKhIjoBELgqgfb7QofAXk6FPmQ+4jwgFngrgcx5hizVd7PEoJW2SW
 /cJq2tpfr2/pD6BmyFoq
 =X45P
 -----END PGP SIGNATURE-----

Merge tag 'xtensa-next-20121101' of git://github.com/czankel/xtensa-linux

Pull Xtensa fixes from Chris Zankel:
 "Some important bug fixes.

  With the change to uapi, there was a bug introduced that results in an
  empty syscall table (mult-inclusion bug).  Switching to the generic
  thread/execve allowed us to fix a bug we had in vfork()."

* tag 'xtensa-next-20121101' of git://github.com/czankel/xtensa-linux:
  xtensa: switch to generic sys_execve()
  xtensa: switch to generic kernel_execve()
  xtensa: switch to generic kernel_thread()
  xtensa: reset windowbase/windowstart when cloning the VM
  xtensa: use physical addresses for bus addresses
  xtensa: allow multi-inclusion for uapi/unistd.h
2012-11-01 17:48:19 -07:00
Jamie Lentin
eaa7cc60f7 hwmon: Only include of_match_table with CONFIG_OF_GPIO
The following fixes build errors on sparc. Without any DT support,
of_match_ptr is NULL and the below is a no-op. However, if just
CONFIG_OF is defined then so is of_match_ptr.

All useful parts of the gpio-fan DT support rely on CONFIG_OF_GPIO
anyway, so of_match_table should too.

Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2012-11-01 17:31:20 -07:00
Amerigo Wang
f4d5392e5f vlan: use IS_ENABLED()
#if defined(CONFIG_FOO) || defined(CONFIG_FOO_MODULE)

can be replaced by

#if IS_ENABLED(CONFIG_FOO)

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:41:35 -04:00
Amerigo Wang
07a936260a ipv6: use IS_ENABLED()
#if defined(CONFIG_FOO) || defined(CONFIG_FOO_MODULE)

can be replaced by

#if IS_ENABLED(CONFIG_FOO)

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:41:35 -04:00
Nicolas Dichtel
cc535dfb6a rtnl/ipv4: use netconf msg to advertise rp_filter status
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:41:34 -04:00
stephen hemminger
b77bc2069d ppp: make ppp_get_stats64 static
This was picked up by sparse.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:38:31 -04:00
Frank Li
6605b730c0 FEC: Add time stamping code and a PTP hardware clock
This patch adds a driver for the FEC(MX6) that offers time
stamping and a PTP haderware clock. Because FEC\ENET(MX6)
hardware frequency adjustment is complex, we have implemented
this in software by changing the multiplication factor of the
timecounter.

Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:28:44 -04:00
Frank Li
d6e0d9fcbb ARM: imx6q: Set enet tx reference clk from anatop to support 1588
Set GRP1 BIT21 ENET_CLK_SEL:
  Enet tx reference clk from internal clock from anatop
  (loopback through pad), this clock also sent out to external PHY

Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:28:05 -04:00
Frank Li
7629838ca3 ARM: dts: imx6q: Add ENET PTP clock pin and clock source
Add ENET 1588 clock input pin
MX6Q_PAD_GPIO_16__ENET_ANATOP_ETHERNET_REF_OUT
and anatop PLL8 clock source for ENET

Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:28:05 -04:00
Frank Li
405f257f46 net: fec: move fec_enet_private to header file
A new file fec_ptp.c will use fec_enet_private to support 1588 PTP
move such structure to common header file fec.h

Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:28:05 -04:00
Hannes Frederic Sowa
23ea5a9637 veth: allow changing the mac address while interface is up
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:26:10 -04:00
Richard Cochran
2e5b38abcf cpsw: support the HWTSTAMP ioctl and the CPTS
This patch hooks into the CPTS code and adds support for the HWTSTAMP
ioctl. The patch includes code for the CPSW version found in the dm814x
even though the background device tree support for this board is still
missing.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:21:32 -04:00
Richard Cochran
00ab94eeaf cpts: specify the input clock frequency via DT
This patch adds a way to configure the CPTS input clock scaling factors
via the device tree.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:21:32 -04:00
Richard Cochran
78ca0b2873 cpsw: add a DT field for the active time stamping port
Because time stamping on both external ports of the switch simultaneously
is positively useless from the application's point of view, this patch
provides a DT configuration method to choose the active port.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:21:32 -04:00
Richard Cochran
6b60393e08 cpsw: add a DT field for the cpts offset
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:21:32 -04:00
Richard Cochran
87c0e764d4 cpts: introduce time stamping code and a PTP hardware clock.
This patch adds a driver for the CPTS that offers time
stamping and a PTP hardware clock. Because some of the
CPTS hardware variants (like the am335x) do not support
frequency adjustment, we have implemented this in software
by changing the multiplication factor of the timecounter.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:21:30 -04:00
Richard Cochran
9750a3ade7 cpsw: support both silicon versions
This patch fixes the cpsw driver to operate correctly with both the
dm814x and the am335x versions of the switch hardware.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:21:30 -04:00
Richard Cochran
e90cfac6c2 cpsw: remember the silicon version
This patch lets the CPSW driver remember the version number in order to
support the two different variants already in the wild.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:21:29 -04:00
Richard Cochran
bd357af2a5 cpsw: add missing fields to the CPSW_SS register bank.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:21:29 -04:00
Richard Cochran
996a5c2788 cpsw: rename register banks to match the reference manual
The code mixes up the CPSW_SS and the CPSW_WR register naming. This patch
changes the names to conform to the published Technical Reference Manual
from TI, in order to make working on the code less confusing.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:21:29 -04:00
Mugunthan V N
5c50a856d5 drivers: net: ethernet: cpsw: add multicast address to ALE table
Adding multicast address to ALE table via netdev ops to subscribe, transmit
or receive multicast frames to and from the network

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 12:21:29 -04:00
Julian Anastasov
2c42a3fb30 tcp: Fix double sizeof in new tcp_metrics code
Fix double sizeof when parsing IPv6 address from
user space because it breaks get/del by specific IPv6 address.

	Problem noticed by David Binderman:

https://bugzilla.kernel.org/show_bug.cgi?id=49171

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:59:08 -04:00
Jesper Dangaard Brouer
8f363b77ee net: fix divide by zero in tcp algorithm illinois
Reading TCP stats when using TCP Illinois congestion control algorithm
can cause a divide by zero kernel oops.

The division by zero occur in tcp_illinois_info() at:
 do_div(t, ca->cnt_rtt);
where ca->cnt_rtt can become zero (when rtt_reset is called)

Steps to Reproduce:
 1. Register tcp_illinois:
     # sysctl -w net.ipv4.tcp_congestion_control=illinois
 2. Monitor internal TCP information via command "ss -i"
     # watch -d ss -i
 3. Establish new TCP conn to machine

Either it fails at the initial conn, or else it needs to wait
for a loss or a reset.

This is only related to reading stats.  The function avg_delay() also
performs the same divide, but is guarded with a (ca->cnt_rtt > 0) at its
calling point in update_params().  Thus, simply fix tcp_illinois_info().

Function tcp_illinois_info() / get_info() is called without
socket lock.  Thus, eliminate any race condition on ca->cnt_rtt
by using a local stack variable.  Simply reuse info.tcpv_rttcnt,
as its already set to ca->cnt_rtt.
Function avg_delay() is not affected by this race condition, as
its called with the socket lock.

Cc: Petr Matousek <pmatouse@redhat.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:55:59 -04:00
Masanari Iida
d3e9a1dc7c net: sctp: Fix typo in net/sctp
Correct spelling typo in net/sctp/socket.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:55:19 -04:00
nikolay@redhat.com
c84e1590d1 bonding: fix second off-by-one error
Fix off-by-one error because IFNAMSIZ == 16 and when this
code gets executed we stick a NULL byte where we should not.

How to reproduce:
 with CONFIG_CC_STACKPROTECTOR=y (otherwise it may pass by silently)
 modprobe bonding; echo 1 > /sys/class/net/bond0/bonding/mode;
 echo "AAAAAAAAAAAAAAAA" > /sys/class/net/bond0/bonding/active_slave;

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>

Note: Sorry for the second patch but I missed this one while checking
      the file. You can squash them into one patch.
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:53:44 -04:00
nikolay@redhat.com
eb6e98a1b2 bonding: fix off-by-one error
Fix off-by-one error because IFNAMSIZ == 16 and when this
code gets executed we stick a NULL byte where we should not.

How to reproduce:
 with CONFIG_CC_STACKPROTECTOR=y (otherwise it may pass by silently)
 modprobe bonding; echo 1 > /sys/class/net/bond0/bonding/mode;
 echo "AAAAAAAAAAAAAAAA" > /sys/class/net/bond0/bonding/primary;

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:53:43 -04:00
Jean-Christophe PLAGNIOL-VILLARD
8ef29f8aae net/macb: add pinctrl consumer support
If no pinctrl available just report a warning as some architecture may not
need to do anything.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
[nicolas.ferre@atmel.com: adapt the error path, remove unneeded headers]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:45:58 -04:00
Havard Skinnemoen
29bc2e1e55 net/macb: Offset first RX buffer by two bytes
Make the ethernet frame payload word-aligned, possibly making the
memcpy into the skb a bit faster. This will be even more important
after we eliminate the copy altogether.

Also eliminate the redundant RX_OFFSET constant -- it has the same
definition and purpose as NET_IP_ALIGN.

Signed-off-by: Havard Skinnemoen <havard@skinnemoen.net>
[nicolas.ferre@atmel.com: adapt to newer kernel]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:45:58 -04:00
Nicolas Ferre
e86cd53afc net/macb: better manage tx errors
Handle all TX errors, not only underruns. TX error management is
deferred to a dedicated workqueue.
Reinitialize the TX ring after treating all remaining frames, and
restart the controller when everything has been cleaned up properly.
Napi is not stopped during this task as the driver only handles
napi for RX for now.
With this sequence, we do not need a special check during the xmit
method as the packets will be caught by TX disable during workqueue
execution.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:45:58 -04:00
Nicolas Ferre
d1d1b53d9d net/macb: ethtool interface: add register dump feature
Add macb_get_regs() ethtool function and its helper function:
macb_get_regs_len().
The version field is deduced from the IP revision which gives the
"MACB or GEM" information. An additional version field is reserved.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:45:58 -04:00
Havard Skinnemoen
55054a16a5 net/macb: clean up ring buffer logic
Instead of masking head and tail every time we increment them, just let them
wrap through UINT_MAX and mask them when subscripting. Add simple accessor
functions to do the subscripting properly to minimize the chances of messing
this up.

This makes the code slightly smaller, and hopefully faster as well.  Also,
doing the ring buffer management this way will simplify things a lot when
making the ring sizes configurable in the future.

Available number of descriptors in ring buffer function by David Laight.

Signed-off-by: Havard Skinnemoen <havard@skinnemoen.net>
[nicolas.ferre@atmel.com: split patch in topics, adapt to newer kernel]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:45:58 -04:00
Nicolas Ferre
cde30a857c net/macb: tx status is more than 8 bits now
On some revision of GEM, TSR status register has more information.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:45:57 -04:00
Nicolas Ferre
83cdbc7da7 net/macb: remove macb_get_drvinfo()
This function has little meaning so remove it altogether and
let ethtool core fill in the fields automatically.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:45:57 -04:00
Havard Skinnemoen
a268adb1c8 net/macb: change debugging messages
Convert some noisy netdev_dbg() statements to netdev_vdbg(). Defining
DEBUG will no longer fill up the logs; VERBOSE_DEBUG still does.
Add one more verbose debug for ISR status.

Signed-off-by: Havard Skinnemoen <havard@skinnemoen.net>
[nicolas.ferre@atmel.com: split patch in topics, add ISR status]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:45:57 -04:00
Havard Skinnemoen
03dbe05fe4 net/macb: memory barriers cleanup
Remove a couple of unneeded barriers and document the remaining ones.

Signed-off-by: Havard Skinnemoen <havard@skinnemoen.net>
[nicolas.ferre@atmel.com: split patch in topics]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:45:56 -04:00
Patrice Vilchez
140b7552fd net/macb: Add support for Gigabit Ethernet mode
Add Gigabit Ethernet mode to GEM cadence IP and enable RGMII connection.

Signed-off-by: Patrice Vilchez <patrice.vilchez@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:45:56 -04:00
Richard Cochran
65f8f9a1c1 time: remove the timecompare code.
This patch removes the timecompare code from the kernel. The top five
reasons to do this are:

1. There are no more users of this code.
2. The original idea was a bit weak.
3. The original author has disappeared.
4. The code was not general purpose but tuned to a particular hardware,
5. There are better ways to accomplish clock synchronization.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: John Stultz <john.stultz@linaro.org>
Tested-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:41:35 -04:00
Richard Cochran
dd87b22f90 bfin_mac: offer a PTP Hardware Clock.
The BF518 has a PTP time unit that works in a similar way to other MAC
based clocks, like gianfar, ixp46x, and igb. This patch adds support for
using the blackfin as a PHC. Although the blackfin hardware does offer a
few ancillary features, this patch implements only the basic operations.

Compile tested only.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Tested-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:41:35 -04:00
Richard Cochran
bc3c5f634d bfin_mac: replace sys time stamps with raw ones instead.
This patch replaces the sys time stamps and timecompare code with simple
raw hardware time stamps in nanosecond resolution. The only tricky bit is
to find a PTP Hardware Clock period slower than the input clock period
and a power of two.

Compile tested only.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Tested-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:41:35 -04:00
Richard Cochran
85c153d2c7 bfin_mac: only advertise hardware time stamped when enabled.
The hardware time stamping code is a compile time option for the blackfin.
When it is not enabled, the driver should fall back to the standard
ethtool reply to the get_ts_info query.

Compile tested only.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Tested-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:41:34 -04:00
Richard Cochran
215b13dd28 ptp: add an ioctl to compare PHC time with system time
This patch adds an ioctl for PTP Hardware Clock (PHC) devices that allows
user space to measure the time offset between the PHC and the system
clock. Rather than hard coding any kind of estimation algorithm into the
kernel, this patch takes the more flexible approach of just delivering
an array of raw clock readings. In that way, the user space clock servo
may be adapted to new and different hardware clocks.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-01 11:41:34 -04:00