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>
commit 7583605b6d ("ucc_geth: Fix empty
TX queue processing") fixed empty TX queue mishandling, but didn't
account another corner case: when TX queue becomes full.
Without this patch the driver will stop transmiting when TX queue
becomes full since 'bd == ugeth->txBd[txQ]' actually checks for
two things: queue empty or full.
Let's better check for NULL skb, which unambiguously signals an empty
queue.
Signed-off-by: Jiajun Wu <b06378@freescale.com>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Stable <stable@vger.kernel.org> [2.6.32]
Signed-off-by: David S. Miller <davem@davemloft.net>
Sometimes ucc_geth fails to suspend with the following trace:
ucc_geth e0103000.ucc: suspend
ucc_geth e0102000.ucc: suspend
NETDEV WATCHDOG: eth0 (ucc_geth): transmit queue 0 timed out
------------[ cut here ]------------
Badness at net/sched/sch_generic.c:255
NIP: c021cb5c LR: c021cb5c CTR: c01ab4b4
[...]
NIP [c021cb5c] dev_watchdog+0x298/0x2a8
LR [c021cb5c] dev_watchdog+0x298/0x2a8
Call Trace:
[c0389da0] [c021cb5c] dev_watchdog+0x298/0x2a8 (unreliable)
[c0389e00] [c0031ed8] run_timer_softirq+0x16c/0x1dc
[c0389e50] [c002c638] __do_softirq+0xa4/0x11c
[...]
This patch fixes the issue by properly detaching the device on
suspend, and attaching it back on resume.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If PHY doesn't have an IRQ, phylib would poll for link changes, and
would call adjust_link() every second. In that case we disable and
enable the controller every second.
Let's better check if there is actually anything changed, and, if so,
change the MAC settings.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since commit 864fdf884e ("ucc_geth:
Fix hangs after switching from full to half duplex") ucc_geth driver
disables the controller during MAC configuration changes. Though,
disabling the controller might take quite awhile, and so the netdev
watchdog might get upset:
NETDEV WATCHDOG: eth2 (ucc_geth): transmit queue 0 timed out
------------[ cut here ]------------
Badness at c02729a8 [verbose debug info unavailable]
NIP: c02729a8 LR: c02729a8 CTR: c01b6088
REGS: c0451c40 TRAP: 0700 Not tainted (2.6.32-trunk-8360e)
[...]
NIP [c02729a8] dev_watchdog+0x280/0x290
LR [c02729a8] dev_watchdog+0x280/0x290
Call Trace:
[c0451cf0] [c02729a8] dev_watchdog+0x280/0x290 (unreliable)
[c0451d50] [c00377c4] run_timer_softirq+0x164/0x224
[c0451da0] [c0032a38] __do_softirq+0xb8/0x13c
[c0451df0] [c00065cc] do_softirq+0xa0/0xac
[c0451e00] [c003280c] irq_exit+0x7c/0x9c
[c0451e10] [c00640c4] __ipipe_sync_stage+0x248/0x24c
[...]
This patch fixes the issue by detaching the netdev during the
time we change the configuration.
Reported-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Tested-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: Stable <stable@vger.kernel.org> [2.6.32]
Signed-off-by: David S. Miller <davem@davemloft.net>
Following oops was seen with the ucc_geth driver:
Unable to handle kernel paging request for data at address 0x00000058
Faulting instruction address: 0xc024f2fc
Oops: Kernel access of bad area, sig: 11 [#1]
[...]
NIP [c024f2fc] skb_recycle_check+0x14/0x100
LR [e30aa0a4] ucc_geth_poll+0xd8/0x4e0 [ucc_geth_driver]
Call Trace:
[df857d50] [c000b03c] __ipipe_grab_irq+0x3c/0xa4 (unreliable)
[df857d60] [e30aa0a4] ucc_geth_poll+0xd8/0x4e0 [ucc_geth_driver]
[df857dd0] [c0258cf8] net_rx_action+0xf8/0x1b8
[df857e10] [c0032a38] __do_softirq+0xb8/0x13c
[df857e60] [c00065cc] do_softirq+0xa0/0xac
[...]
This is because ucc_geth_tx() tries to process an empty queue when
queues are logically stopped. Stopping the queues doesn't disable
polling, and since nowadays ucc_geth_tx() is actually called from
the polling routine, the oops above might pop up.
Fix this by removing 'netif_queue_stopped() == 0' check.
Reported-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Tested-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: Stable <stable@vger.kernel.org> [2.6.32]
Signed-off-by: David S. Miller <davem@davemloft.net>
Only files where David Miller is the primary git-signer.
wireless, wimax, ixgbe, etc are not modified.
Compile tested x86 allyesconfig only
Not all files compiled (not x86 compatible)
Added a few > 80 column lines, which I ignored.
Existing checkpatch complaints ignored.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
MPC8360 QE UCC ethernet controllers hang when changing link duplex
under a load (a bit of NFS activity is enough).
PHY: mdio@e0102120:00 - Link is Up - 1000/Full
sh-3.00# ethtool -s eth0 speed 100 duplex half autoneg off
PHY: mdio@e0102120:00 - Link is Down
PHY: mdio@e0102120:00 - Link is Up - 100/Half
NETDEV WATCHDOG: eth0 (ucc_geth): transmit queue 0 timed out
------------[ cut here ]------------
Badness at c01fcbd0 [verbose debug info unavailable]
NIP: c01fcbd0 LR: c01fcbd0 CTR: c0194e44
...
The cure is to disable the controller before changing speed/duplex
and enable it afterwards.
Though, disabling the controller might take quite a while, so we
better not grab any spinlocks in adjust_link(). Instead, we quiesce
the driver's activity, and only then disable the controller.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We'll need ugeth_disable() and ugeth_enable() calls earlier in the
file, so rearrange some code to avoid forward declarations.
The patch doesn't contain any functional changes.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch implements suspend/resume and WOL support for UCC Ethernet
driver.
We support two wake up events: wake on PHY/link changes and wake
on magic packet.
In some CPUs (like MPC8569) QE shuts down during sleep, so magic packet
detection is unusable, and also on resume we should fully reinitialize
UCC structures.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch removes currently unused UGETH_MAGIC_PACKET Kconfig symbol
and code, i.e. magic_packet_detection_{enable,disable} functions.
The two functions each contain just two steps that we'll place into
suspend/resume code path under CONFIG_PM.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch factors out MAC initialization into ucc_geth_init_mac()
function that we'll use for suspend/resume.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The NETPOLL API requires that interrupts remain disabled in
netpoll_send_skb(). The use of spin_lock_irq() and spin_unlock_irq()
in the NETPOLL API callbacks causes the interrupts to get enabled and
can lead to kernel instability.
The solution is to use spin_lock_irqsave() and spin_unlock_restore()
to prevent the irqs from getting enabled while in netpoll_send_skb().
Call trace:
netpoll_send_skb()
{
-> local_irq_save(flags)
---> dev->ndo_start_xmit(skb, dev)
---> spin_lock_irq()
---> spin_unlock_irq() *******here would enable the interrupt.
...
-> local_irq_restore(flags)
}
Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Acked-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since commit 0b9da337dc ("Rework
ucc_geth driver to use of_mdio infrastructure") the fixed-link
support is broken.
This patch fixes the support by removing !ug_info->phy_node check,
and adds a call to of_phy_connect_fixed_link() if a phy is not attached
to the MAC.
Also, remove an old fixed-link code that we don't use any longer.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
We can reclaim transmitted skbs to use in the receive path, so-called
skb recycling support.
Also reorder ucc_geth_poll() steps, so that we'll clean tx ring firstly,
thus maybe reclaim some skbs for rx.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch is the result of an automatic spatch transformation to convert
all ndo_start_xmit() return values of 0 to NETDEV_TX_OK.
Some occurences are missed by the automatic conversion, those will be
handled in a seperate patch.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (55 commits)
netxen: fix tx ring accounting
netxen: fix detection of cut-thru firmware mode
forcedeth: fix dma api mismatches
atm: sk_wmem_alloc initial value is one
net: correct off-by-one write allocations reports
via-velocity : fix no link detection on boot
Net / e100: Fix suspend of devices that cannot be power managed
TI DaVinci EMAC : Fix rmmod error
net: group address list and its count
ipv4: Fix fib_trie rebalancing, part 2
pkt_sched: Update drops stats in act_police
sky2: version 1.23
sky2: add GRO support
sky2: skb recycling
sky2: reduce default transmit ring
sky2: receive counter update
sky2: fix shutdown synchronization
sky2: PCI irq issues
sky2: more receive shutdown
sky2: turn off pause during shutdown
...
Manually fix trivial conflict in net/core/skbuff.c due to kmemcheck
-- derived from reverted commit 047584ce94
-- reworked by Grant Likely to play nice with commit:
"net: Rework ucc_geth driver to use of_mdio infrastructure"
(0b9da337dc)
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit 047584ce94.
This patch meshes badly with "net: Rework ucc_geth driver to use
of_mdio infrastructure" (0b9da337dc).
Since most of the patch needs to be reworked, it is clearer to revert
the patch and then apply the corrected version
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Inspired by the patch for 8139too (bda6a15a).
Currently we can't set mac address on a running ucc_geth device.
But this is needed when you use this device as a bonding slave in
bonding device in balance-alb mode. So add this feature for ucc_geth
device.
Signed-off-by: Kevin Hao <kexin.hao@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In the case the QE has 46 SNUMs for the threads to support four UCC
Ethernet at 1000Base-T simultaneously.
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Change the definition of riscTx and riscRx to unsigned integer instead of
enum, and change their values to support 4 risc allocation if the qe has
4 RISC engines.
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Previous rework to ucc_geth.c to add of_mdio support (net: Rework
ucc_geth driver to use of_mdio infrastructure) added a block of
code which broke older openfirmware device trees which this case.
This patch removes the offending blurb.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch simplifies the driver by making use of more common code.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
If using the UCC on a MPC8360 in RMII mode, don;t set
UCC_GETH_UPSMR_RPM bit in the upsmr register.
Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Li Yang <leoli@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This will make the system alot more responsive while ping flooding the
ucc_geth ethernet interface.
Also set NAPI weight to 64 as this is a common value.
Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The driver should pass a device that actually specifies internal DMA
ops, but currently it passes netdev's device, which is wrong and that
causes following oops:
Kernel BUG at c01c4df8 [verbose debug info unavailable]
Oops: Exception in kernel mode, sig: 5 [#1]
[...]
NIP [c01c4df8] get_new_skb+0x7c/0xf8
LR [c01c4da4] get_new_skb+0x28/0xf8
Call Trace:
[ef82be00] [c01c4da4] get_new_skb+0x28/0xf8 (unreliable)
[ef82be20] [c01c4eb8] rx_bd_buffer_set+0x44/0x98
[ef82be40] [c01c62bc] ucc_geth_startup+0x11b0/0x147c
[ef82be80] [c01c6674] ucc_geth_open+0xec/0x2a4
[ef82bea0] [c02288a4] dev_open+0xc0/0x11c
[...]
Fix this by passing of_device's device that specifies DMA ops in its
archdata.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that the driver is exclusively an of_platform driver we no longer
use the structs and #defines in fsl_devices.h
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
We can't put 'mdio' until after we've used it in the
fsl_pq_mdio_bus_name() call.
Also fix error return values.
Signed-off-by: David S. Miller <davem@davemloft.net>
When there are no free snums, UCC ethernet should gracefully fail, but
currently it oopses this way:
# ifconfig eth0 up
fill_init_enet_entries: Can not get SNUM.
ucc_geth_startup: Can not fill p_init_enet_param_shadow.
eth0: Cannot configure net device, aborting.
Unable to handle kernel paging request for data at address 0x00000190
Faulting instruction address: 0xc0294c88
Oops: Kernel access of bad area, sig: 11 [#1]
[...]
NIP [c0294c88] mutex_lock+0x0/0x1c
LR [c01b6be8] phy_stop+0x20/0x70
Call Trace:
[efb25da0] [efb2eb60] 0xefb2eb60 (unreliable)
[efb25db0] [c01b2058] ucc_geth_stop+0x2c/0x8c
[efb25dd0] [c01b4194] ucc_geth_open+0x48/0x27c
[efb25df0] [c020eec0] dev_open+0xc0/0x118
[...]
This is because the ucc_geth_stop() routine assumes that ugeth->phydev
is always initialized by the ucc_geth_open(), while it is not in case
of errors.
If we add a check to the ucc_geth_stop(), then another oops pops up:
Unable to handle kernel paging request for data at address 0x00000004
Faulting instruction address: 0xc01b46a4
Oops: Kernel access of bad area, sig: 11 [#1]
[...]
NIP [c01b46a4] adjust_link+0x20/0x1b4
LR [c01b770c] phy_state_machine+0xdc/0x44c
Call Trace:
[ef83bf10] [c021b388] linkwatch_schedule_work+0x74/0xf8 (unreliable)
[ef83bf40] [c01b770c] phy_state_machine+0xdc/0x44c
[ef83bf60] [c004c13c] run_workqueue+0xb8/0x148
[ef83bf90] [c004c870] worker_thread+0x70/0xd0
[ef83bfd0] [c00505fc] kthread+0x48/0x84
[ef83bff0] [c000f464] kernel_thread+0x4c/0x68
[...]
That one happens because ucc_geth_stop() does not call phy_disconnect()
and so phylib state machine is running without any idea that a MAC has
just died.
Also, when device tree specifies fixed-link, and CONFIG_FIXED_PHY
is disabled, we'll get this oops:
0:01 not found
eth2: Could not attach to PHY
eth2: Cannot initialize PHY, aborting.
Unable to handle kernel paging request for data at address 0x00000190
Faulting instruction address: 0xc02967d0
Oops: Kernel access of bad area, sig: 11 [#1]
[...]
NIP [c02967d0] mutex_lock+0x0/0x1c
LR [c01b6bcc] phy_stop+0x20/0x70
Call Trace:
[ef82be50] [efb6bb60] 0xefb6bb60 (unreliable)
[ef82be60] [c01b2058] ucc_geth_stop+0x2c/0x8c
[ef82be80] [c01b4194] ucc_geth_open+0x48/0x27c
[ef82bea0] [c0210a04] dev_open+0xc0/0x118
[ef82bec0] [c020f85c] dev_change_flags+0x84/0x1ac
[ef82bee0] [c037b768] ic_open_devs+0x168/0x2bc
[ef82bf20] [c037ca98] ip_auto_config+0x90/0x28c
[ef82bf60] [c0001b9c] do_one_initcall+0x34/0x1a0
[ef82bfd0] [c035e240] do_initcalls+0x38/0x58
[ef82bfe0] [c035e2c4] kernel_init+0x30/0x90
[ef82bff0] [c000f464] kernel_thread+0x4c/0x68
[...]
And again, ucc_geth_stop() assumes that ugeth->phydev is there, while
it isn't.
This patch fixes all three oopses simply by rearranging some code:
- In ucc_geth_open(): move init_phy() call to the beginning, so
that we only call ucc_geth_stop() with a PHY attached;
- Move phy_disconnect() call from ucc_geth_close() to
ucc_geth_stop(), so that we'll always disconnect the PHY.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes following build error:
CC ucc_geth.o
ucc_geth.c: In function 'ucc_geth_probe':
ucc_geth.c:3644: error: implicit declaration of function 'uec_mdio_bus_name'
make[2]: *** [ucc_geth.o] Error 1
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
commit b1c4a9dddf ("ucc_geth: Change
uec phy id to the same format as gianfar's") introduced a regression
in the ucc_geth driver that causes this oops when fixed-link is used:
Unable to handle kernel paging request for data at address 0x00000000
Faulting instruction address: 0xc0151270
Oops: Kernel access of bad area, sig: 11 [#1]
TMCUTU
NIP: c0151270 LR: c0151270 CTR: c0017760
REGS: cf81fa60 TRAP: 0300 Not tainted (2.6.29-rc8)
MSR: 00009032 <EE,ME,IR,DR> CR: 24024042 XER: 20000000
DAR: 00000000, DSISR: 20000000
TASK = cf81cba0[1] 'swapper' THREAD: cf81e000
GPR00: c0151270 cf81fb10 cf81cba0 00000000 c0272e20 c025f354 00001e80
cf86b08c
GPR08: d1068200 cffffb74 06000000 d106c200 42024042 10085148 0fffd000
0ffc81a0
GPR16: 00000001 00000001 00000000 007ffeb0 00000000 0000c000 cf83f36c
cf83f000
GPR24: 00000030 cf83f360 cf81fb20 00000000 d106c200 20000000 00001e80
cf83f360
NIP [c0151270] ucc_geth_open+0x330/0x1efc
LR [c0151270] ucc_geth_open+0x330/0x1efc
Call Trace:
[cf81fb10] [c0151270] ucc_geth_open+0x330/0x1efc (unreliable)
[cf81fba0] [c0187638] dev_open+0xbc/0x12c
[cf81fbc0] [c0187e38] dev_change_flags+0x8c/0x1b0
This patch fixes the issue by removing offending (and somewhat
duplicate) code from init_phy() routine, and changes _probe()
function to use uec_mdio_bus_name().
Also, since we fully construct phy_bus_id in the _probe() routine,
we no longer need ->phy_address and ->mdio_bus fields in
ucc_geth_info structure.
I wish the patch would be a bit shorter, but it seems like the only
way to fix the issue in a sane way. Luckily, the patch has been
tested with real PHYs and fixed-link, so no further regressions
expected.
Reported-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Tested-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
The MDIO bus drivers for the UCC and gianfar ethernet controllers are
essentially the same. There's no reason to duplicate that much code.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The commit b31a1d8b41 ("gianfar: Convert
gianfar to an of_platform_driver") changes the gianfar's phy id to the
format like "mdio@xxxx:xx", but uec still uses the old format like
"xxxxxxxx:xx". For the board whose UEC uses gianfar-mdio like
MPC8568MDS, the phy can not be attached because of the incompatible
phy id format. This patch changes uec's phy id to the same format as
gianfar's.
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Following the removal of the unused struct net_device * parameter from
the NAPI functions named *netif_rx_* in commit 908a7a1, they are
exactly equivalent to the corresponding *napi_* functions and are
therefore redundant.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The UCC Event Register (UCCE) already has unambigous macro definitions in qe.h,
so we should not be defining our own in the UCC Ethernet driver.
Removed unused local variable 'dev' from ucc_geth_poll(), which fixes
a warning caused by commit 908a7a16b8
("net: Remove unused netdev arg from some NAPI interfaces.").
Replaced in_be/out_be pairs with setbits32 or clrbits32, where applicable.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
