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* cns3xxx: fix mtu setting with kernel 4.14Mathias Kresin2018-08-161-10/+1
| | | | | | | | | | | Since kernel 4.10 commit 61e84623ace3 ("net: centralize net_device min/max MTU checking"), the range of mtu is [min_mtu, max_mtu], which is [68, 1500] by default. It's necessary to set a max_mtu if a mtu > 1500 is supported. Tested-by: Koen Vandeputte <koen.vandeputte@ncentric.com> Signed-off-by: Mathias Kresin <dev@kresin.me>
* cns3xxx: ethernet: use circular queue checks consistentlyKoen Vandeputte2018-08-071-15/+18
| | | | | | | Use the same method for setting queue index pointers consistenly throughout the source file. Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: ethernet: cleanup codeKoen Vandeputte2018-08-071-13/+22
| | | | Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: ethernet: fix signed/unsigned comparisonKoen Vandeputte2018-08-071-1/+1
| | | | | | Fixes a compiler warning Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: remove linux 4.9 supportKoen Vandeputte2018-02-132-31/+13
| | | | | | | | - Remove kernel 4.9 support - Apply specific 4.14 changes directly to source - Refreshed all Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: fix GPIO controller interrupt enableTim Harvey2017-09-111-3/+3
| | | | | | | | | | | | | The cns3xxx interrupt controller uses a single register and as such the 'mask' reg/functions must be used as opposed to the 'enable'/'disable' reg/functions. This fixes an issue that occurs if more than one GPIO on a specific controller (there is GPIOA and GPIOB each having 32 GPIO's) uses interrupts. When one would get enabled all others would be disabled prior to this patch. Signed-off-by: Tim Harvey <tharvey@gateworks.com> Acked-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: clean up patchesFelix Fietkau2017-02-111-13/+13
| | | | Signed-off-by: Felix Fietkau <nbd@nbd.name>
* cns3xxx: use proper macro's for ID handlingKoen Vandeputte2017-02-071-3/+3
| | | | | | Compiled & tested on cns3xxx Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: fix UART resource overlapKoen Vandeputte2016-11-051-2/+2
| | | | | | | | | | | | Port 1 registers the same IO resources as port 2 in the kernel resource tree, which is wrong. Fix this by using it's own resources as indicated in the overview (cns3xxx.h). Compiled & Tested on several GW2388-4 laguna boards which utilizes all 3 ports. Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: eliminate hardcoded kernel/rootfs partition splitFelix Fietkau2016-09-191-51/+11
| | | | | | | | | | | | | | This changes the sysupgrade format. To support upgrades from the old firmware to the new one, legacy images are provided. Because of the old partition split, these have to be specific to the NOR or SPI device. The new sysupgrade images are suitable for begin put on flash directly, and they are independent of NOR vs SPI flash variant. Flashing back to old firmware is supported via using the old full-flash images instead of the old sysupgrade images. Signed-off-by: Felix Fietkau <nbd@nbd.name>
* cns3xxx: move laguna.c changes out of patches, update it in files/Felix Fietkau2016-09-191-6/+64
| | | | Signed-off-by: Felix Fietkau <nbd@nbd.name>
* cns3xxx: add GW2386 supportTim Harvey2016-09-081-0/+20
| | | | Signed-off-by: Tim Harvey <tharvey@gateworks.com>
* cns3xxx: add GW2394 SupportTim Harvey2016-09-081-1/+3
| | | | Signed-off-by: Tim Harvey <tharvey@gateworks.com>
* cns3xxx: fix RX softIRQ loopKoen Vandeputte2016-06-171-2/+2
| | | | | | | | | | Already reschedule when 1 or more frames came in. Checking for a full queue could produce a re-schedule loop as the checked RX ring location could contain undefined values depending on activity in previous loops. Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
* cns3xxx: improve ethernet performance by using the page fragment allocation APIFelix Fietkau2016-01-311-7/+7
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 48580
* cns3xxx: fix ethernet DMA ring allocation issuesFelix Fietkau2016-01-311-50/+32
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 48579
* cns3xxx: update to linux 4.4Felix Fietkau2016-01-181-5/+5
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 48334
* cns3xxx: fix a ethernet driver napi poll handling bugFelix Fietkau2016-01-181-1/+2
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 48333
* cns3xxx: clean up SMP related codeFelix Fietkau2016-01-182-17/+6
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 48332
* cns3xxx: remove obsolete fileFelix Fietkau2016-01-181-26/+0
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 48330
* cns3xxx: remove unused define and use of a deprecated functionFelix Fietkau2016-01-181-2/+1
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 48329
* cns3xxx: add GW2393 SupportJohn Crispin2015-12-171-1/+3
| | | | | | | | | | | Based off of the GW2391-C, but with the following changes: * 4x4in to 4x5in pcb * flat panel connector for LED signals Signed-off-by: Tim Harvey <tharvey@gateworks.com> Signed-off-by: Pushpal Sidhu <psidhu@gateworks.com> SVN-Revision: 47920
* cns3xxx: Fix commentJohn Crispin2015-12-171-1/+1
| | | | | | | | Original comment was wrong about which pads are being set. Signed-off-by: Pushpal Sidhu <psidhu@gateworks.com> SVN-Revision: 47919
* cns3xxx: add missing dma mask for ethernet deviceFelix Fietkau2014-11-261-1/+6
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 43399
* cns3xxx: switch to using the upstream dwc2 driver instead of dwc_otgFelix Fietkau2014-11-2619-22925/+1
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 43398
* cns3xxx: update to linux 3.14Felix Fietkau2014-11-261-2/+2
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 43397
* cns3xxx: set base device for ethernet port netdevsFelix Fietkau2014-11-261-0/+1
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 43395
* cns3xxx: fix passing the device to dma mapping opsFelix Fietkau2014-11-261-17/+20
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 43394
* cns3xxx: Adopt irq_domain support for cns3xxx gpio driverFelix Fietkau2014-10-081-7/+23
| | | | | | | | | 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
* cns3xxx: fix register for enabling MMC/SD pinsFelix Fietkau2014-10-071-2/+1
| | | | | | | | also fixes a GPIO related regression from the upgrade to 3.10 Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 42829
* cns3xxx: update to linux 3.10Felix Fietkau2014-07-3113-338/+337
| | | | | | Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 41917
* cns3xxx: ethernet - revert: clean up tx descs only when neededFelix Fietkau2014-04-291-8/+4
| | | | | | | | | | | | | 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
* Add GW2385 supportImre Kaloz2014-03-121-0/+30
| | | | | | | Signed-off-by: Tim Harvey <tharvey@gateworks.com> Signed-off-by: Imre Kaloz <kaloz@openwrt.org> SVN-Revision: 39894
* various dwc (OTG) driver fixupsImre Kaloz2014-03-128-95/+442
| | | | | | | Signed-off-by: Tim Harvey <tharvey@gateworks.com> Signed-off-by: Imre Kaloz <kaloz@openwrt.org> SVN-Revision: 39892
* cns3xxx: ethernet - clean up tx descs only when neededFelix Fietkau2014-02-271-4/+8
| | | | | | | | | | | 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
* cns3xxx: ethernet - resolve SMP issueFelix Fietkau2014-02-271-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* add pushbutton GPIO for GW2380/82/83Imre Kaloz2013-11-101-0/+3
| | | | | | Signed-off-by: Tim Harvey <tharvey@gateworks.com> SVN-Revision: 38702
* cns3xxx: fix USB ehci/ohci platform driverFelix Fietkau2013-04-101-3/+51
| | | | | | | | | | | 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
* cns3xxx: remove the watchdog IRQ from the resources, it breaks the driver ↵Felix Fietkau2013-04-071-5/+0
| | | | | | | | init and is useful only for testing Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 36241
* cns3xxx: ethernet - clean the tx ring before refilling the rx ring to reduce ↵Felix Fietkau2013-03-111-4/+4
| | | | | | memory pressure SVN-Revision: 35953
* cns3xxx: ethernet - clean the tx ring only in the poll function, not in the ↵Felix Fietkau2013-03-111-6/+11
| | | | | | xmit handler SVN-Revision: 35952
* cns3xxx: increase number of ethernet driver rx buffersFelix Fietkau2013-03-101-1/+1
| | | | SVN-Revision: 35951
* cns3xxx: prevent the ethernet driver from accessing uninitialized dma ↵Felix Fietkau2013-03-101-1/+2
| | | | | | descriptor entries SVN-Revision: 35950
* cns3xxx: minor ethernet driver cleanupFelix Fietkau2013-03-101-35/+19
| | | | SVN-Revision: 35949
* cns3xxx: use kmalloc instead of kzalloc for ethernet rx buffersFelix Fietkau2013-03-101-1/+1
| | | | SVN-Revision: 35943
* cns3xxx: fix an rx irq handling corner caseFelix Fietkau2013-03-101-5/+5
| | | | | | | | | | | | | | | | 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
* cns3xxx: fix ethernet driver memory barrier usageFelix Fietkau2013-03-101-5/+8
| | | | SVN-Revision: 35941
* cns3xxx: reduce buffer allocation size to 2048 bytes, improves ethernet ↵Felix Fietkau2013-03-101-1/+1
| | | | | | performance SVN-Revision: 35917
* cns3xxx: add linux 3.8 support and use it by defaultFelix Fietkau2013-03-097-24/+25
| | | | SVN-Revision: 35908
* clean up PCI bus topologyImre Kaloz2013-01-101-2/+2
| | | | | | | | This makes the PCI bus topology more standard for devices behind a bridge Signed-off-by: Tim Harvey <tharvey@gateworks.com> SVN-Revision: 35078
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