Commit Graph

267 Commits

Author SHA1 Message Date
David S. Miller
4e84b496fd Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-11-06 22:01:18 -05:00
Andy Shevchenko
7627fc074b stmmac: pci: convert to use dev_* macros
Instead of pr_* macros let's use dev_* macros which provide device name.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06 14:38:58 -05:00
Andy Shevchenko
2a3e8e93bd stmmac: pci: use managed resources
Migrate pci driver to managed resources to reduce boilerplate error handling
code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06 14:38:57 -05:00
Andy Shevchenko
3be3d81b62 stmmac: pci: convert to use dev_pm_ops
Convert system PM callbacks to use dev_pm_ops. In addition remove the PCI calls
related to a power state since the bus code cares about this already.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06 14:38:57 -05:00
Andy Shevchenko
295f9d0bc3 stmmac: pci: use defined constant instead of magic number
The last standard PCI resource is defined as PCI_STD_RESOURCE_END. Thus, we
could use it instead of plain integer.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06 14:38:57 -05:00
Andy Shevchenko
915af65619 stmmac: fix sparse warnings
This patch fixes the following sparse warnings.

drivers/net/ethernet/stmicro/stmmac/enh_desc.c:381:30: warning: symbol 'enh_desc_ops' was not declared. Should it be static?
drivers/net/ethernet/stmicro/stmmac/norm_desc.c:253:30: warning: symbol 'ndesc_ops' was not declared. Should it be static?
drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c:141:33: warning: symbol 'stmmac_ptp' was not declared. Should it be static?

There is no functional change.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Giuseppe CAVALLARO <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-06 14:35:11 -05:00
Giuseppe CAVALLARO
777da230c5 stmmac: fix atomicity in pm routines
This patch is to fix the atomicity when suspend and resume the
driver. The clk api have been changed (as reported by Hao Liang)
and the skb allocation is done out of the hw setup function and
taking care about the GFP flags.

Reported-by: Hao Liang <hliang1025@gmail.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: Hao Liang <hliang1025@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-05 16:22:57 -05:00
Giuseppe CAVALLARO
4741cf9cec stmmac: fix concurrency in eee initialization.
This patch aims to fix the concurrency in eee initialization
inside the stmmac driver and related warnings when enable
DEBUG_ATOMIC_SLEEP.

Prior this patch, the stmmac_eee_init could be called in several places
as shown below:

stmmac_open  stmmac_resume         PHY Layer
    |            |                     |
  stmmac_hw_setup           stmmac_adjust_link
    |                                  |           stmmac ethtool
    |__________________________|______________|
                                       |
                                 stmmac_eee_init

The patch removes the stmmac_eee_init call inside the stmmac_hw_setup
that is unnecessary. It is sufficient to call it in the adjust_link to
always guarantee that EEE is always configured at mac level too.

Fixing the lock protection now it is covered another case (not
considered before). The stmmac_eee_init could be called by the ethtool
so critical sections must be protected inside this function too.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-05 16:22:57 -05:00
Giuseppe CAVALLARO
b9d73704aa stmmac: fix lock in stmmac_set_rx_mode
When compile with CONFIG_PROVE_LOCKING the following warnings happen:

[snip]

    HARDIRQ-ON-W at:
                        [<c0480c1c>] _raw_spin_lock+0x3c/0x4c
                        [<c02c2828>] stmmac_set_rx_mode+0x18/0x3c
                        [<c038b2cc>] dev_set_rx_mode+0x1c/0x28
                        [<c038b38c>] __dev_open+0xb4/0xf8
                        [<c038b5a8>] __dev_change_flags+0x94/0x128
                        [<c038b6a8>] dev_change_flags+0x10/0x48
                        [<c062afe0>] ip_auto_config+0x1d4/0x1084
                        [<c000873c>] do_one_initcall+0x108/0x15c
                        [<c060ec50>] kernel_init_freeable+0x1a8/0x248
                        [<c0472cc0>] kernel_init+0x8/0x160
                        [<c000dfc8>] ret_from_fork+0x14/0x2c
     INITIAL USE at:
                       [<c0480c1c>] _raw_spin_lock+0x3c/0x4c
                       [<c02c2828>] stmmac_set_rx_mode+0x18/0x3c
                       [<c038b2cc>] dev_set_rx_mode+0x1c/0x28
                       [<c038b38c>] __dev_open+0xb4/0xf8
                       [<c038b5a8>] __dev_change_flags+0x94/0x128
                       [<c038b6a8>] dev_change_flags+0x10/0x48
                       [<c062afe0>] ip_auto_config+0x1d4/0x1084
                       [<c000873c>] do_one_initcall+0x108/0x15c
                       [<c060ec50>] kernel_init_freeable+0x1a8/0x248
                       [<c0472cc0>] kernel_init+0x8/0x160
                       [<c000dfc8>] ret_from_fork+0x14/0x2c

so the patch just removes the lock protection in the stmmac_set_rx_mode

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Emilio Lopez <emilio@elopez.com.ar>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-05 16:22:56 -05:00
Fabrice Gasnier
758a0ab59b stmmac: release tx lock, in case of dma mapping error.
Add missing spin_unlock when tx frames gets dropped.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-05 16:22:56 -05:00
Fabrice Gasnier
16ee817e43 stmmac: fix stmmac_tx_avail should be called with TX locked
stmmac_tx_avail() may lie if used unprotected. It's using cur_tx
and dirty_tx index. These index may be already in use by tx_clean
when entering xmit routine. So, this should be called locked.

This can cause transmit queue to be stuck, with following message:
NETDEV WATCHDOG: eth0 (stmmaceth): transmit queue 0 timed out

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-05 16:22:56 -05:00
Giuseppe CAVALLARO
98fbebcb6d stmmac: remove BUS_MODE_DA
This is a very old and often unused option to configure
a bit in a register inside the DMA. This support should
not stay under Koption and should be extended for new chips too.
This will be do later maybe via device-tree parameters.
Also no performance impact when remove this setting on STi platforms.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-05 16:14:43 -05:00
Giuseppe CAVALLARO
50fb4f7474 stmmac: remove STMMAC_DEBUG_FS
the STMMAC_DEBUG_FS Koption is now removed from the
driver configuration and this support will be built
by default when DEBUG_FS is present. This can also be
useful on building driver verification.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-05 16:14:43 -05:00
Giuseppe CAVALLARO
c0d540661d stmmac: remove specific SoC Koption from platform.
This patch removes all the Koptions added to build the glue-logic files
for all different architectures: DWMAC_MESON, DWMAC_SUNXI, DWMAC_STI ...
Nowadays the stmmac needs to be compiled on several platforms; in some
case it very convenient to guarantee that its build is always completed
with success on all the branches where the driver is present.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-05 16:14:43 -05:00
Andy Shevchenko
1e19e084ea stmmac: pci: set default of the filter bins
The commit 3b57de958e brought the support for a different amount of the
filter bins, but didn't update the PCI driver accordingly. This patch appends
the default values when the device is enumerated via PCI bus.

Fixes: 3b57de958e (net: stmmac: Support devicetree configs for mcast and ucast filter entries)
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-31 16:09:57 -04:00
Giuseppe CAVALLARO
71ae8f5271 stmmac: fix sti compatibililies
this patch is to fix the stmmac data compatibilities for
all the SoCs inside the platform file.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-15 11:45:42 -04:00
Giuseppe CAVALLARO
53b26b9bc9 stmmac: dwmac-sti: review the glue-logic for STi4xx and STiD127 SoCs
This patch is to review the whole glue logic adopted on STi SoCs that
was bugged.

In the old glue-logic there was a lot of confusion when setup the
retiming especially for STiD127 where, for example, the bits 6 and 7
(in the GMAC  control register) have a different meaning of what is
used for STiH4xx SoCs. So we cannot adopt the same glue for all these
SoCs.
Moreover, GiGa on STiD127 didn't work and, for all the SoCs, the RGMII
couldn't run when the speed was 10Mbps (because the clock was not properly
managed).
Note that the phy clock needs to be provided by the platform as well as
documented in the related binding file (updated as consequence).

The old code supported too many configurations never adopted and validated.
This made the code very complex to maintain and debug in case of issues.

The patch simplifies all the configurations as commented in the tables
inside the file and obviously it has been tested on all the boards
based on the SoCs mentioned.

With this patch, the dwmac-sti is also ready to support new configurations that
will be available on next SoC generations.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:40:06 -04:00
Giuseppe CAVALLARO
160e1fd10a stmmac: make the STi Layer compatible to STiH407
This adds the missing compatibility to the STiH407 SoC.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:40:06 -04:00
Giuseppe CAVALLARO
8c2a7a5d2c stmmac: platform: fix FIXED_PHY support.
On several STi platforms: e.g. stihxxx-b2120 an Ethernet switch is
embedded and connected to the stmmac via RGMII mode. So this is managed
by using the FIXED_PHY. In that case, the support in the platform needs
to be fixed to allow the stmmac to dialog with the switch via fixed-link
by using phy_bus_name property.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-14 16:39:30 -04:00
Vince Bridgers
3dab99e0b3 stmmac: correct mc_filter local variable in set_filter and set_mac_addr call
Testing revealed that the local variable mc_filter was dimensioned
incorrectly for all possible configurations and get_mac_addr should
have been set_mac_addr (a typo). Make sure mc_filter is dimensioned
to 8 32-bit unsigned longs - the largest size of the Synopsys
multicast filter register set.

Signed-off-by: Vince Bridgers <vbridger@opensource.altera.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-10 14:48:02 -04:00
Tobias Klauser
6a05880a8b net: ethernet: Remove superfluous ether_setup after alloc_etherdev
There is no need to call ether_setup after alloc_ethdev since it was
already called there.

Follow commits c706471b26 ("net: axienet: remove unnecessary
ether_setup after alloc_etherdev") and 3c87dcbfb3 ("net: ll_temac:
Remove unnecessary ether_setup after alloc_etherdev") and fix the
pattern in all remaining ethernet drivers.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-03 15:31:40 -07:00
David S. Miller
739e4a758e Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/usb/r8152.c
	net/netfilter/nfnetlink.c

Both r8152 and nfnetlink conflicts were simple overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-02 11:25:43 -07:00
Kweh, Hock Leong
c5bb86c384 net: stmmac: fix stmmac_pci_probe failed when CONFIG_HAVE_CLK is selected
When the CONFIG_HAVE_CLK is selected for the system, the stmmac_pci_probe
will fail with dmesg:
[    2.167225] stmmaceth 0000:00:14.6: enabling device (0000 -> 0002)
[    2.178267] stmmaceth 0000:00:14.6: enabling bus mastering
[    2.178436] stmmaceth 0000:00:14.6: irq 24 for MSI/MSI-X
[    2.178703] stmmaceth 0000:00:14.6: stmmac_dvr_probe: warning: cannot
get CSR clock
[    2.186503] stmmac_pci_probe: main driver probe failed
[    2.194003] stmmaceth 0000:00:14.6: disabling bus mastering
[    2.196473] stmmaceth: probe of 0000:00:14.6 failed with error -2

This patch fix the issue by breaking the dependency to devm_clk_get()
as the CSR clock can be obtained at priv->plat->clk_csr from pci driver.

Reported-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Signed-off-by: Kweh, Hock Leong <hock.leong.kweh@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-29 16:36:58 -04:00
Beniamino Galvani
0ad5adcdb7 net: stmmac: add Amlogic Meson glue layer
The Ethernet controller available in Meson6 and Meson8 SoCs is a
Synopsys DesignWare MAC IP core, already supported by the stmmac
driver.

This glue layer implements some platform-specific settings needed by
the Amlogic variant.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-26 00:12:56 -04:00
Wei Yongjun
f19f916d64 net: stmmac: fix return value check in socfpga_dwmac_parse_data()
In case of error, the function devm_ioremap_resource() returns
ERR_PTR() and never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-13 16:42:47 -04:00
Joe Perches
fe3881cf7e drivers/net: Convert remaining uses of pr_warning to pr_warn
Use the much more common pr_warn instead of pr_warning.

Other miscellanea:

o Typo fixes submiting/submitting
o Coalesce formats
o Realign arguments
o Add missing terminating '\n' to formats

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-09 20:37:08 -07:00
David S. Miller
eb84d6b604 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-09-07 21:41:53 -07:00
Giuseppe CAVALLARO
cc25f0cbe4 stmmac: only remove RXCSUM feature if no rx coe is available
In case of the HW is not able to do the receive checksum offloading
the only feature to remove is NETIF_F_RXCSUM.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-01 21:51:29 -07:00
Giuseppe CAVALLARO
d2afb5bdff stmmac: fix the rx csum feature
For new GMACs it is possible to turn-on/off the COE.
In the current driver, when disabled the Rx-checksum
via ethtool, the tool reported that csum was disabled
but the HW continued to set the IPC. Indeed this is
because the fix_features allows this. So the patch
fixes this problem by adding the set_features.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-01 21:51:29 -07:00
Giuseppe CAVALLARO
71965352ee stmmac: fix PLS bit setting when EEE is active
In case of PLS is active the PLS (PHY Link Status) bit in
the Reg12 has to be set to allow the MAC to asserts the LPI
pattern when the link is ok.

Signed-off-by: nandini sharma <nandini.sharma@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-31 22:01:06 -07:00
Giuseppe CAVALLARO
56b88c25c5 stmmac: never check EEE in case of a switch is attached
This patch is to skip the EEE initialisation when the stmmac
is using a switch (with a fixed phy support).

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-31 22:01:06 -07:00
nandini sharma
438a62b16e stmmac: fix LPI TW timer value to 20.5us.
The value for LPI TW timer has to be updated to 0x1E that is the hardcoded value
of 20.5us and it will apply to all EEE enabled Remote PHYs.
Disadvantage is for PHY's that support lesser wakeup time but we can accept it
waiting to implement LLDP to negotiate the Wakeup time of Remote PHY.

Signed-off-by: nandini sharma <nandini.sharma@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-31 22:01:06 -07:00
nandini sharma
162fb1d655 stmmac: fix the EEE LPI Macro definitions.
This patch is to fix the definition of macros for EEE otherwise the LPI TX/RX
entry/exit cannot be properly managed.

Signed-off-by: Nandini Sharma <nandini.sharma@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-31 22:01:06 -07:00
Ley Foon Tan
dace1b5472 net: stmmac: fix warning from Sparse for socfpga
Warning:
drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c:122:41:
sparse: cast removes address space of expression
drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c:122:38:
sparse: incorrect type in assignment (different address spaces)

Signed-off-by: Ley Foon Tan <lftan@altera.com>
Acked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-29 20:49:24 -07:00
Giuseppe CAVALLARO
362b37be01 stmmac: fix dma api misuse
Enabling DMA_API_DEBUG, warnings are reported at runtime
because the device driver frees DMA memory with wrong functions
and it does not call dma_mapping_error after mapping dma memory.

The first problem is fixed by of introducing a flag that helps us
keeping track which mapping technique was used, so that we can use
the right API for unmap.
This approach was inspired by the e1000 driver, which uses a similar
technique.

Signed-off-by: Andre Draszik <andre.draszik@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Reviewed-by: Denis Kirjanov <kda@linux-powerpc.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-29 19:54:36 -07:00
Giuseppe CAVALLARO
5566401f2f stmmac: ptp: fix the reference clock
The PTP reference clock, used for setting the addend in the Timestamp Addend
Register, was erroneously hard-coded (as reported in the databook just as
example).

The patch removes the macro named: STMMAC_SYSCLOCK and allows to use a
reference clock (clk_ptp_ref_i) that can be passed from the platform.

If not passed, the main driver clock will be used as default; note that
this can be fine on some platforms.

Note that, prior this patch, using the old STMMAC_SYSCLOCK on some platforms,
as side effect, the ptp clock can move faster/slower than the system clock.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-29 19:54:36 -07:00
Giuseppe CAVALLARO
2b78d348f1 stmmac: fix tipo on mmc crc error
This patch is to fix a typo on mmc rx crc error when reported by ethtool.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-29 19:54:36 -07:00
Giuseppe CAVALLARO
b1dee4793f stmmac: prevent false carrier sense detection
This patch is to w/a a problem that happens on some boxes when run at 10Mbps
Half duplex mode.

During the transmission the CSR signal is asserted for some time and the frames
aborted because of carrier sense error.
This is reported by MMC HW counter: txcarrier signal.
This actually is a false carrier so the frames are good and there is no reason
to ask for dropping them.

This patch so disables the Carrier Sense During Transmission
and this means that the MAC transmitter ignore the CRS signal
during frame transmission in Half-Duplex mode.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Vince Bridgers <vbridgers2013@gmail.com>
Acked-by: Ley Foon Tan <lftan@altera.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-29 19:54:36 -07:00
Giuseppe CAVALLARO
f95f4045c7 stmmac: set ptp_clock to NULL while unregister
This is to properly put to NULL the ptp_clock while un-register the PTP support.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-25 15:33:10 -07:00
Giuseppe CAVALLARO
978aded4b3 stmmac: fix rx checksum programming
This patch is to fix the IPC bit into the GMAC control register
that must be done after the core initialization otherwise it will
not have any effect.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-25 15:33:10 -07:00
Pavel Machek
a77e4accce stmmac: simple cleanups
This adds simple cleanups for stmmac, removing test we know is always
true, fixing whitespace, and moving code out of if().

Signed-off-by: Pavel Machek <pavel@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-25 15:13:15 -07:00
Ley Foon Tan
b4834c86e1 net: stmmac: add fix_mac_speed support for socfpga
This patch adds fix_mac_speed() support for
Altera socfpga Ethernet controller. Emac splitter is a
soft IP core in FPGA system that converts GMII interface from
Synopsys mac to RGMII/SGMII interface. This splitter core is
an optional IP if user would like to use RGMII/SGMII
interface in their system. Software needs to update a register
in splitter core when there is speed change.

Signed-off-by: Ley Foon Tan <lftan@altera.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-22 12:33:48 -07:00
Benoit Taine
9baa3c34ac PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use
We should prefer `struct pci_device_id` over `DEFINE_PCI_DEVICE_TABLE` to
meet kernel coding style guidelines.  This issue was reported by checkpatch.

A simplified version of the semantic patch that makes this change is as
follows (http://coccinelle.lip6.fr/):

// <smpl>

@@
identifier i;
declarer name DEFINE_PCI_DEVICE_TABLE;
initializer z;
@@

- DEFINE_PCI_DEVICE_TABLE(i)
+ const struct pci_device_id i[]
= z;

// </smpl>

[bhelgaas: add semantic patch]
Signed-off-by: Benoit Taine <benoit.taine@lip6.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-08-12 12:15:14 -06:00
Vince Bridgers
3b57de958e net: stmmac: Support devicetree configs for mcast and ucast filter entries
This patch adds and modifies code to support multiple Multicast and Unicast
Synopsys MAC filter configurations. The default configuration is defined to
support legacy driver behavior, which is 64 Multicast bins. The Unicast
filter code previously assumed all controllers support 32 or 16 Unicast
addresses based on controller version number, but this has been corrected
to support a default of 1 Unicast address. The filter configuration may
be specified through the devicetree using a Synopsys specific device tree
entry. This information was verified with Synopsys through
Synopsys Support Case #8000684337 and shared with the maintainer.

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-31 14:13:29 -07:00
Vince Bridgers
aefef4c15a net: stmmac: Correct set_filter for multicast and unicast cases
This patch removes the check for the number of mulitcast addresses
when using hash based filtering since it's not necessary. If the number
of multicast addresses in the list exceeds the number of multicast hash
bins, the bins will "fold" over into one of the bins configured and
enabled for the particular component instance.

The default number of maximum unicast addresses was changed from 32 to 1
since this number is not dependent on the component revision. The maximum
number of multicast and unicast addresses is dependent on the configuration
of the Synopsys EMAC configured by the SOC architect at the time the
features were selected and configured for a particular component. Sadly,
Synopsys does not provide a way to query the precise number supported
by a particular component, so we must fall back on a devicetree entry.
This configuration could vary from vendor to vendor (such as STMicro,
Altera, etc).

The multicast bins are set for every possible filtering case (including
no entries) - previously the bits were set only if multicast filter entries
were present.

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-31 14:13:29 -07:00
Vince Bridgers
7ed24bbe18 net: stmmac: Change MAC interface to support multiple filter configurations
The synopsys EMAC can be configured for different numbers of multicast hash
bins and perfect filter entries at device creation time and there's no way
to query this configuration information at runtime. As a result, a devicetree
parameter is required in order for the driver to program these filters
correctly for a particular device instance. This patch modifies the
10/100/1000 MAC software interface such that these configuration parameters
can be set at initialization time.

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-31 14:13:29 -07:00
Vince Bridgers
2d871aa071 net: stmmac: add platform init/exit for Altera's ARM socfpga
This patch adds platform init/exit functions and modifications to support
suspend/resume for the Altera Cyclone 5 SOC Ethernet controller. The platform
exit function puts the controller into reset using the socfpga reset
controller driver. The platform init function sets up the Synopsys mac by
first making sure the Ethernet controller is held in reset, programming the
phy mode through external support logic, then deasserts reset through
the socfpga reset manager driver.

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-30 15:11:54 -07:00
David S. Miller
26a9ebca98 Revert "net: stmmac: add platform init/exit for Altera's ARM socfpga"
This reverts commit 0acf167687.

Breaks the build due to missing reference to phy_resume in
the resulting dwmac-socfpga.o object.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-07 19:53:45 -07:00
Vince Bridgers
c8df8ce3ee net: stmmac: Remove unneeded I/O read caught by cppcheck
Cppcheck found a case where a local variable was being assigned a value,
but not used. There seems to be no reason to read this register before
assigning a new value, so addressing thie issue.

cppcheck --force --enable=all --inline-suppr . shows ...

Variable 'value' is reassigned a value before the old one has been used.

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-02 18:37:54 -07:00
Vince Bridgers
43d24e4894 net: stmmac: Correct duplicate if/then/else case found by cppcheck
Cppcheck found a duplicate if/then/else case where a receive descriptor
was being processed. This patch corrects that issue.

cppcheck --force --enable=all --inline-suppr .
...
Checking enh_desc.c...
[enh_desc.c:148] -> [enh_desc.c:144]: (style) Found duplicate if expressions.
...

Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-02 18:37:54 -07:00