Commit graph

31 commits

Author SHA1 Message Date
Felix Fietkau
fa5237d936 cns3xxx: Adopt irq_domain support for cns3xxx gpio driver
Have gpio driver adopt irqdomain support so that there are
non-overlapping allocations of irq numbers mapped to gpio's.

Signed-off-by: Pushpal Sidhu <psidhu@gateworks.com>

SVN-Revision: 42844
2014-10-08 10:28:10 +00:00
Felix Fietkau
0563e0225e cns3xxx: fix register for enabling MMC/SD pins
also fixes a GPIO related regression from the upgrade to 3.10

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 42829
2014-10-07 10:37:09 +00:00
Felix Fietkau
3c7cd63b72 cns3xxx: update to linux 3.10
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 41917
2014-07-31 23:40:49 +00:00
Felix Fietkau
2603c9045d cns3xxx: ethernet - revert: clean up tx descs only when needed
This reverts commit 0772ab938c0aedd7f4cc7127059d6ce8cf929dfa.

Trying to optimize calls to eth_complete_tx in this fasion causes a regression
where when sending only the tx queue can get disabled until a packet is
received. This original call to eth_schedule_poll() is scheduled so it
should not cause a performance issue.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

SVN-Revision: 40592
2014-04-29 15:52:12 +00:00
Imre Kaloz
8411a5703f Add GW2385 support
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 39894
2014-03-12 13:40:13 +00:00
Imre Kaloz
68022cac64 various dwc (OTG) driver fixups
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 39892
2014-03-12 13:37:40 +00:00
Felix Fietkau
8665c57923 cns3xxx: ethernet - clean up tx descs only when needed
We already clean up tx descriptors in the napi eth_poll() function so it
would likely be rare to run out of available descriptors in eth_xmit. Thus
we can clean them up only when needed and return busy only when we
still don't have enough.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

SVN-Revision: 39762
2014-02-27 23:02:43 +00:00
Felix Fietkau
96eb3d883d cns3xxx: ethernet - resolve SMP issue
The combination of r35942 and r35952 causes an issue where eth_schedule_poll()
can be called from a different CPU between the call to napi_complete() and the
setting of cur_index which can break the rx ring accounting and cause ethernet
latency and/or ethernet stalls.  The issue can be easilly created by adding
a couple of artificial delays such as:

@@ -715,6 +715,7 @@ static int eth_poll(struct napi_struct *napi, int budget)

 	if (!received) {
 		napi_complete(napi);
+udelay(1000);
 		enable_irq(IRQ_CNS3XXX_SW_R0RXC);
 	}

@@ -727,6 +728,7 @@ static int eth_poll(struct napi_struct *napi, int budget)
 	rx_ring->cur_index = i;

 	wmb();
+udelay(1000);
 	enable_rx_dma(sw);

 	return received;

This patch moves the setting of cur_index back up where it needs to be and
addresses the original corner case that r35942 was trying to catch in an
improved fashion by checking to see if the rx descriptor ring has become
full before interrupts were re-enabled so that a poll can be scheduled again
and avoid an rx stall caused by rx interrupts ceasing to fire again.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

SVN-Revision: 39761
2014-02-27 23:02:37 +00:00
Imre Kaloz
b0fe7d1ec6 add pushbutton GPIO for GW2380/82/83
Signed-off-by: Tim Harvey <tharvey@gateworks.com>

SVN-Revision: 38702
2013-11-10 09:55:17 +00:00
Felix Fietkau
6436b3f736 cns3xxx: fix USB ehci/ohci platform driver
Update ehci/ohci driver registration to conform to the new platform
drivers.

This fixes missing USB host support in 3.8.x

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

SVN-Revision: 36309
2013-04-10 16:20:50 +00:00
Felix Fietkau
fde143b66f cns3xxx: remove the watchdog IRQ from the resources, it breaks the driver init and is useful only for testing
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 36241
2013-04-07 11:24:30 +00:00
Felix Fietkau
bd6c9d6252 cns3xxx: ethernet - clean the tx ring before refilling the rx ring to reduce memory pressure
SVN-Revision: 35953
2013-03-11 02:29:53 +00:00
Felix Fietkau
d7a529709a cns3xxx: ethernet - clean the tx ring only in the poll function, not in the xmit handler
SVN-Revision: 35952
2013-03-11 02:29:47 +00:00
Felix Fietkau
0d13baff1e cns3xxx: increase number of ethernet driver rx buffers
SVN-Revision: 35951
2013-03-10 21:59:32 +00:00
Felix Fietkau
ee2b511e1f cns3xxx: prevent the ethernet driver from accessing uninitialized dma descriptor entries
SVN-Revision: 35950
2013-03-10 21:59:28 +00:00
Felix Fietkau
d22ac8d8fb cns3xxx: minor ethernet driver cleanup
SVN-Revision: 35949
2013-03-10 21:59:21 +00:00
Felix Fietkau
9facda9570 cns3xxx: use kmalloc instead of kzalloc for ethernet rx buffers
SVN-Revision: 35943
2013-03-10 18:25:20 +00:00
Felix Fietkau
c44506fcbd cns3xxx: fix an rx irq handling corner case
When an rx interrupt comes in, rx interrupts are disabled and NAPI
polling is scheduled. During the NAPI poll, the driver first processes
received frames in the ring, then fills the dma descriptor slots with
new buffers and calls tx complete, before finally re-enabling rx
interrupts and completing NAPI (if below the budget).
If the hardware rx queue overflows before the napi complete is called,
the hardware will not throw any further rx interrupts and rx processing
stops completely.
Fix this by keeping NAPI polling scheduled until it completes a poll
without receiving any packets, and also handle NAPI completion before
refilling rx or completing tx.

SVN-Revision: 35942
2013-03-10 18:25:16 +00:00
Felix Fietkau
c1adc79328 cns3xxx: fix ethernet driver memory barrier usage
SVN-Revision: 35941
2013-03-10 18:25:11 +00:00
Felix Fietkau
446409f43e cns3xxx: reduce buffer allocation size to 2048 bytes, improves ethernet performance
SVN-Revision: 35917
2013-03-10 01:27:04 +00:00
Felix Fietkau
95f14d052a cns3xxx: add linux 3.8 support and use it by default
SVN-Revision: 35908
2013-03-09 18:51:46 +00:00
Imre Kaloz
b63b970866 clean up PCI bus topology
This makes the PCI bus topology more standard for devices behind a bridge

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

SVN-Revision: 35078
2013-01-10 13:23:33 +00:00
Imre Kaloz
2c05915b24 add nol2x0 cmdline to disable l2x0 cache
L2 cache via L2X0 cache controller available on some ARM boards can
provide a performance boost in some situations but decrease performance
in others.  This adds a kernel cmdline to disable L2X0 for cns3xxx based
boards.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

SVN-Revision: 34874
2012-12-23 18:53:38 +00:00
Florian Fainelli
822ee5053e cns3xxx: fix dwc_otg driver compat with udc-core
function.  This removes those from the dwc_otg driver and removes the patch
that comments out the linkage of udc-core so that the dwc_otg driver can
co-exist happily with other USB Device Controllers.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Florian Fainelli <florian@openwrt.org>

SVN-Revision: 34475
2012-12-04 16:19:18 +00:00
Imre Kaloz
77504ac06f split spi patch, follow mainline file naming
SVN-Revision: 34168
2012-11-12 08:22:14 +00:00
Imre Kaloz
9a780e0328 split the i2c patch, merge the retry fixup
SVN-Revision: 34167
2012-11-12 08:21:38 +00:00
Luka Perkov
16275bdd15 cns3xxx: convert dwc_otg patches to files
SVN-Revision: 34162
2012-11-11 20:03:58 +00:00
Luka Perkov
e38adfc912 cns3xxx: convert ethernet patches to files
SVN-Revision: 34161
2012-11-11 20:03:56 +00:00
Luka Perkov
965c190444 cns3xxx: exit from laguna late_initcall if not running on laguna board
SVN-Revision: 34120
2012-11-08 11:31:56 +00:00
Imre Kaloz
0da0dc0f2b cns3xxx: add PPS support for laguna
Many Laguna products have on-board GPS with Pulse-per-second (PPS)
support.  This patch adds kernel support (statically) and adds
the platform data in laguna board support.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

SVN-Revision: 34115
2012-11-08 05:42:31 +00:00
Luka Perkov
9a5c26d4ef cns3xxx: use files directory
SVN-Revision: 34101
2012-11-06 11:16:41 +00:00