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* seems workingNamhoon Kim2015-02-26
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* ENGR00322050 net: fec: remove the nonstandard performance optimaztionFugang Duan2014-07-10
| | | | | | | | | | The previous patch is to increase imx6sx enet performance, and then replace wmb() with dmb(), whitch can get more 80Mbps improvement, and don't find any impact. Now enet support TSO feature, remove the nonstandard performance optimaztion. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00322047 net: fec: set ftype for AVB bandwidth reservationFugang Duan2014-07-10
| | | | | | Set the related ftype field for each queue for AVB bandwidth reservation. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00321358-1 can: m_can: fix incorrect buffer offsetDong Aisheng2014-07-04
| | | | | | | Each buffer offset already contains the mram_off, so do not need add mram_off again. Signed-off-by: Dong Aisheng <b29396@freescale.com>
* ENGR00320354-2 can: m_can: add loopback and monitor mode supportDong Aisheng2014-06-29
| | | | | | | add loopback and monitor mode support. Signed-off-by: Dong Aisheng <b29396@freescale.com> (cherry picked from commit 534152b41012b4648c22b37f2feb0ddb6a6cde2e)
* ENGR00320354-1 can: m_can: add bus error handlingDong Aisheng2014-06-29
| | | | | | | Add bus error, state change, lost message handling mechanism. Signed-off-by: Dong Aisheng <b29396@freescale.com> (cherry picked from commit f2f95e529927f3debeef1fa19ac560d2ebf71140)
* ENGR00320136 net: fec: fix rcv is not last issue when do suspend/resume testFugang Duan2014-06-26
| | | | | | | | | | When do suspend/resume stress test, some log shows "rcv is not +last". The issue is that enet suspend will disable phy clock, phy link down, after resume back, enet MAC redo initial and ready to tx/rx packet, but phy still is not ready which is doing auto-negotiation. When phy link is not up, don't schdule napi soft irq. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00320120 net: fec: remove unnecessary condition for magic packet setFugang Duan2014-06-26
| | | | | | Remove unnecessary condition for magic packet setting. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00319480 net: fec: support DSM with M/F mix offFugang Duan2014-06-20
| | | | | | | To support DSM with M/F mix off, driver need to call phy_stop before suspend, call phy_start after resume. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00319455-1 can: m_can: add Bosch M_CAN controller supportDong Aisheng2014-06-20
| | | | | | | | | | | | | | | | | | | | The patch adds the basic CAN TX/RX function support for Bosch M_CAN controller. For TX, only one dedicated tx buffer is used for sending data. For RX, RXFIFO 0 is used for receiving data to avoid overflow. Rx FIFO 1 and Rx Buffers are not used currently, as well as Tx Event FIFO. Due to the message ram can be shared by multi m_can instances and the fifo element is configurable which is SoC dependant, the design is to parse the message ram related configuration data from device tree rather than hardcode define it in driver which can make the message ram using fully transparently to M_CAN controller driver, then we can gain better driver maintainability and future features upgrade. M_CAN also supports CANFD protocol features like data payload up to 64 bytes and bitrate switch at runtime, however, this patch still does not add the support for these features. Signed-off-by: Dong Aisheng <b29396@freescale.com>
* net: fec: Don't clear IPV6 header checksum field when IP accelerator enableFugang Duan2014-06-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit 96c50caa5148 (net: fec: Enable IP header hardware checksum) enable HW IP header checksum for IPV4 and IPV6, which causes IPV6 TCP/UDP cannot work. (The issue is reported by Russell King) For FEC IP header checksum function: Insert IP header checksum. This "IINS" bit is written by the user. If set, IP accelerator calculates the IP header checksum and overwrites the IINS corresponding header field with the calculated value. The checksum field must be cleared by user, otherwise the checksum always is 0xFFFF. So the previous patch clear IP header checksum field regardless of IP frame type. In fact, IP HW detect the packet as IPV6 type, even if the "IINS" bit is set, the IP accelerator is not triggered to calculates IPV6 header checksum because IPV6 frame format don't have checksum. So this results in the IPV6 frame being corrupted. The patch just add software detect the current packet type, if it is IPV6 frame, it don't clear IP header checksum field. Cc: Russell King <linux@arm.linux.org.uk> Reported-and-tested-by: Russell King <linux@arm.linux.org.uk> Signed-off-by: Fugang Duan <B38611@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: fec: Add software TSO supportFugang Duan2014-06-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add software TSO support for FEC. This feature allows to improve outbound throughput performance. Tested on imx6dl sabresd board, running iperf tcp tests shows: - 16.2% improvement comparing with FEC SG patch - 82% improvement comparing with NO SG & TSO patch $ ethtool -K eth0 tso on $ iperf -c 10.192.242.167 -t 3 & [ 3] local 10.192.242.108 port 35388 connected with 10.192.242.167 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0- 3.0 sec 181 MBytes 506 Mbits/sec During the testing, CPU loading is 30%. Since imx6dl FEC Bandwidth is limited to SOC system bus bandwidth, the performance with SW TSO is a milestone. CC: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> CC: Eric Dumazet <eric.dumazet@gmail.com> CC: David Laight <David.Laight@ACULAB.COM> CC: Li Frank <B20596@freescale.com> Signed-off-by: Fugang Duan <B38611@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net> (cherry-pick and merge from linux-net:79f339125ea31)
* net: fec: Add Scatter/gather supportFugang Duan2014-06-13
| | | | | | | | | | | | | | | | | | | | | | | | | Add Scatter/gather support for FEC. This feature allows to improve outbound throughput performance. Tested on imx6dl sabresd board: Running iperf tests shows a 55.4% improvement. $ ethtool -K eth0 sg off $ iperf -c 10.192.242.167 -t 3 & [ 3] local 10.192.242.108 port 52618 connected with 10.192.242.167 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0- 3.0 sec 99.5 MBytes 278 Mbits/sec $ ethtool -K eth0 sg on $ iperf -c 10.192.242.167 -t 3 & [ 3] local 10.192.242.108 port 52617 connected with 10.192.242.167 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0- 3.0 sec 154 MBytes 432 Mbits/sec CC: Li Frank <B20596@freescale.com> Signed-off-by: Fugang Duan <B38611@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net> (cherry-pick and merge form linux-net: 6e909283cb3)
* net: fec: Enable IP header hardware checksumFugang Duan2014-06-13
| | | | | | | | | | | | | | | | IP header checksum is calcalated by network layer in default. To support software TSO, it is better to use HW calculate the IP header checksum. FEC hw checksum feature request the checksum field in frame is zero, otherwise the calculative CRC is not correct. For segmentated TCP packet, HW calculate the IP header checksum again, it doesn't bring any impact. For SW TSO, HW calculated checksum bring better performance. Signed-off-by: Fugang Duan <B38611@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: fec: Factorize feature settingFugang Duan2014-06-13
| | | | | | | | In order to enhance the code readable, let's factorize the feature list. Signed-off-by: Fugang Duan <B38611@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: fec: Factorize the .xmit transmit functionFugang Duan2014-06-13
| | | | | | | | | | | Make the code more readable and easy to support other features like SG, TSO, moving the common transmit function to one api. And the patch also factorize the getting BD index to it own function. CC: David Laight <David.Laight@ACULAB.COM> Signed-off-by: Fugang Duan <B38611@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ENGR00313685-14 net: fec: check workaround for FEC_QUIRK_BUG_WAITMODEShawn Guo2014-05-16
| | | | | | | | | | | | For bug ERR006687 (ENET: Only the ENET wake-up interrupt request can wake the system from Wait mode.), some board designs may choose to work around it by routing the ENET interrupts to pad GPIO6, and the resulting GPIO interrupt will wake the system from Wait mode. The patch adds a check for such workaround and skip the pm_qos_add_request(..., 0) call if the workaround is applied. Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
* ENGR00313508-02 net: fec: add sleep mode supportFugang Duan2014-05-15
| | | | | | | | | When imx6sx is in stop mode, enet sleep mode is entered, the magic pattern can wake up imx6sx system. Use ethtool to enable/disable wol magic pattern wake up. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00310027 net:fec: return the suitable value in irq handlerFugang Duan2014-04-23
| | | | | | | The current return value is not right beacause there may have irq interrupt that is processed. So correct the return value. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00309727 net:fec: fix mdio timeout issueFugang Duan2014-04-22
| | | | | | | | | | | | | | | | The issue can be reproduced after overninght test, reproduced step: nfs mount rootfs, don't do any other ethernet test cases. If the issue generates, there has log: fec 2188000.ethernet eth0: MDIO read timeout The origin interrupt handler may ignore to process mdio interrupt in current irq handler until the next irq action. If the next irq comes in time that is less than the mdio wait time, the next irq handler wake up a single thread waiting on this completion, MDIO read function can get the single before time expired. Otherwise, MDIO read generate timeout issue. The patch just to fix the issue. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00309045 net: fec_ptp: fix timestamp errors when do stress testFugang Duan2014-04-18
| | | | | | | | | | | | | | | | | | | | "FSL_stressPTP" tool is supposed to test the capability characteristics of a ptp stack porting. The stresstest shall measure the overall load of the stack under test by sending delay request and signalling messages.The higher the overall load on the stack is, the higher your packet loss will be. The patch fix the timestamp error in high overall load stress test like: ./FSL_stressPTP -u -b 10.192.242.10 -d 10.192.242.6 -e eth0 -m 00:01:02:04:04:19 -i 100 -t 10 -f -6 -s -6 -c 10 And enet interrupt coalescing feature introduce ptp packet latency, which may cause that the timestamp don't store the related timestamp buffer when stack use ioctl interface to access the message. So add some 4ms delay after getting timestamp fail to let the next looking up success. Suggest to disable interrupt coalescing feature by ethtool when run 1588 cases. Signed-off-by: Fugang Duan <B38611@freescale.com> (cherry picked from commit 11107938cc5a4a7cb4e5fc5e00d248183ed43d93)
* ENGR00309055 net: fec_ptp: optimize 1588 convergent performanceFugang Duan2014-04-18
| | | | | | | | | | | 1588 convergence process (setup time about 15s) is not ideal: Applied a time jump on the reference master which causes both slaves to apply a time jump as well and then synchronize back to the nanoseconds. Optimize the 1588 adjust algorithm to get better convergent action. Signed-off-by: Fugang Duan <B38611@freescale.com> (cherry picked from commit 46a727f7ef469ae7c77c3458efd8a0de2396c360)
* ENGR00308637 net: fec: fix NULL pointer causing kernel hangFugang Duan2014-04-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do video mmVector test with below script, kernel will hang after run about 50 cases. Script: mount -o nolock,tcp -t nfs 10.192.224.45:/streams /mnt/streams/ ./auto_test.sh -l video_h264_d1.list -AV -n my Log: Unable to handle kernel NULL pointer dereference at virtual address 000000a4 pgd = a9c84000 [000000a4] *pgd=a9555831, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] PREEMPT SMP ARM Modules linked in: ov5642_camera ov5640_camera evbug CPU: 0 PID: 16119 Comm: gplay-1.0 Not tainted 3.10.17-internal+g15a353d #1 task: a96183c0 ti: a9de4000 task.ti: a9de4000 PC is at fec_new_rxbdp.isra.28+0x8/0xd8 LR is at fec_enet_rx_napi+0x4b8/0x9a8 pc : [<8039fdf0>] lr : [<803a0378>] psr: 60060113 sp : a9de5d30 ip : 00000030 fp : 00000000 r10: a82aa800 r9 : 00000002 r8 : 000001fc r7 : a82ab000 r6 : 00000000 r5 : ac060fe4 r4 : ac060fe0 r3 : a82ab1fc r2 : 00000000 r1 : ac060fe4 r0 : a82aa800 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 10c53c7d Table: a9c8404a DAC: 00000015 Process gplay-1.0 (pid: 16119, stack limit = 0xa9de4238) Stack: (0xa9de5d30 to 0xa9de6000) 5d20: ac060fe0 00000800 00000000 803a0378 5d40: 00000000 a8009240 a8009290 80c6f440 c0802100 a82aa800 a94b1c00 000005ee 5d60: 00000040 00000000 a8ccf480 ac060fe0 a82aacc0 80c95654 80c6edf0 a82aad08 5d80: 00000000 00000001 a82aae14 a82aad98 a9de5dec 8000dca0 a9de4000 a9510240 5da0: a9de5db4 00000001 a82aad98 00000040 0000012c 81537200 0002a165 81537208 5dc0: 80c640c0 8050e878 00000000 80cb5fe5 0002a163 00000001 0000000c 80c64090 5de0: 80c64080 a9de4000 00000003 0000000c 00000100 8002d538 00000096 a800e240 5e00: 80cb5f0e 80c5e7a0 00000000 0000000a 80cf8940 80c640c0 0002a164 a9de4038 5e20: 80c72324 00404000 7eb2b72c 60060193 00000096 00000000 c0802100 a9510240 5e40: a96183c0 00000000 7eb2b72c 8002d6ac a9de4018 8002d948 80c5eef0 8000e94c 5e60: c080210c 80c6a904 a9de5e88 80008558 8008af14 800bfc4c 00060013 ffffffff 5e80: a9de5ebc 8000dc80 00000000 00000000 0000009a 00000000 0000009a 00000000 5ea0: 00080000 a9de5f80 a9510240 a96183c0 00000000 7eb2b72c 00000002 a9de5ed0 5ec0: 8008af14 800bfc4c 00060013 ffffffff 0000009a 00000000 6c41b000 00080000 5ee0: 00000001 a9510240 00000000 00000000 00000000 a96183c0 00000000 00000000 5f00: 0000009a 00000000 00000000 00000000 00080000 00000000 00080000 00000000 5f20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 5f40: 0002a164 a9510240 6c41b000 a9de5f80 6c41b000 00000001 00080000 800c0290 5f60: 00000002 800d874c 0000009a 00000000 a9510240 6c41b000 00000001 800c08f0 5f80: 0000009a 00000000 c080210c 76eccca8 00000073 76eccca8 00000003 8000e204 5fa0: a9de4000 8000e080 76eccca8 00000073 00000000 6c41b000 00080000 00000010 5fc0: 76eccca8 00000073 76eccca8 00000003 00000000 76eccca8 00000000 7eb2b72c 5fe0: 00000000 7eb2b500 76e59684 76e59694 80060010 00000000 00000000 00000000 [<8039fdf0>] (fec_new_rxbdp.isra.28+0x8/0xd8) from [<a8009240>] (0xa8009240) Code: eb05b6e9 eafffff1 e92d4070 e1a05001 (e59230a4) ---[ end trace 4362657744775d24 ]--- Kernel panic - not syncing: Fatal exception in interrupt The issue is caused potential NULL pointer operation in some cases like late collisions and memory allocate fail by __netdev_alloc_skb_ip_align(). The patch is to avoid potential NULL pointer operation. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00305366-04 net: fec: optimize imx6sx enet performanceFugang Duan2014-04-16
| | | | | | | | | | | | | | | | | | | | The patch do below changes for the enet performance improvement: - Enable GRO in default. The feature can be accessed by ethtool. - In enet napi callback, check interrupt to call tx/rx clean ring function. - For high rate register access, use __raw_writel/__raw_readl instead of writel/readl. When write trigger register for tx/rx, add dmb() to make sure the order. After the optimizition, and below condition: - cpu frequency is 996Mhz, cpufreq goverment is performance. - Connect to FPGA board. The imx6sx enet tcp performance result: TX: 867Mbps, cpu loading near to 100%. RX: 940Mbps, cpu loading near to 92%. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00305366-03 net: fec: remove memory copy for rx pathFugang Duan2014-04-16
| | | | | | | | | | | Re-allocate skb instead of memory copy skb in rx path to improve imx6sx enet rx performance. After the patch, rx performance can reach at 940Mbps (cpu loading is near to 100%) with below interrupt coalescing setting and cpu frequency is 996Mhz. enet reg 0x021880F0=C4000B00 enet reg 0x02188100=C5000900 Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00305366-02 net: fec: disable txf interrupt in napiFugang Duan2014-04-16
| | | | | | | Disable txf interrupt in napi, which can take about 20Mbps improvement for imx6sx enet tx bandwidth. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00305272 net: fec: keep VLAN tag in defaultFugang Duan2014-04-16
| | | | | | | | By default, keep VLAN tag and tranfer to user. If remove the VLAN tag, enable the quirk "FEC_QUIRK_HAS_VLAN" for enet IP. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00304827 net: fec: init the phy_id to invalid addressFugang Duan2014-04-16
| | | | | | Init the phy_id to invalid address in .probe() function. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00304563-1 net: fec: add fixed phy address supportFugang Duan2014-04-16
| | | | | | | | | | | | Add fixed phy address support. i.MX6sx has two MACs, and MAC1 mdio bus connects to two phys which means MAC2 share MDIO bus with MAC1. So for any one of the two MACn, which can scan two phy address. For current implementment, it selects the little address for the default address and binding with the phy. For the situation, user can add the fixed phy address to DTS. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00304446 net: fec: free resource after phy probe failFugang Duan2014-04-16
| | | | | | | | | Current flow call .fec_enet_close() function after phy probe fail, which is not right. It must free memory and disable all related clocks when there has no phy connection or phy probe fail. Signed-off-by: Fugang Duan <B38611@freescale.com>
* net: fec: fix the error to get the previous BD entryFugang Duan2014-04-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bug: error to get the previous BD entry. When the current BD is the first BD, the previous BD entry must be the last BD, not "bdp - 1" in current logic. V4: * Optimize fec_enet_get_nextdesc() for code clean. Replace "ex_new_bd - ring_size" with "ex_base". Replace "new_bd - ring_size" with "base". V3: * Restore the API name because David suggest to use fec_enet_ prefix for all function in fec driver. So, change next_bd() -> fec_enet_get_nextdesc() change pre_bd() -> fec_enet_get_prevdesc() * Reduce the two APIs parameters for easy to call. V2: * Add tx_ring_size and rx_ring_size to struct fec_enet_private. * Replace api fec_enet_get_nextdesc() with next_bd(). Replace api fec_enet_get_prevdesc() with pre_bd(). * Move all ring size check logic to next_bd() and pre_bd(), which simplifies the code redundancy. V1: * Add BD ring size check to get the previous BD entry in correctly. Reviewed-by: Li Frank <B20596@freescale.com> Signed-off-by: Fugang Duan <B38611@freescale.com> Acked-by: Frank Li <frank.li@freescale.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* NET: fec: only enable napi if we are successfulFugang Duan2014-04-16
| | | | | | | | | | | | | | | | | | | | If napi is left enabled after a failed attempt to bring the interface up, we BUG: fec 2188000.ethernet eth0: no PHY, assuming direct connection to switch libphy: PHY fixed-0:00 not found fec 2188000.ethernet eth0: could not attach to PHY ------------[ cut here ]------------ kernel BUG at include/linux/netdevice.h:502! Internal error: Oops - BUG: 0 [#1] SMP ARM ... PC is at fec_enet_open+0x4d0/0x500 LR is at __dev_open+0xa4/0xfc Only enable napi after we are past all the failure paths. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* ENGR00301115 net: fec_ptp: fix convergence issue to support IXXAT and ↵Fugang Duan2014-04-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | LinuxPTP stack IEEE 1588 module has one hw issue in capturing the ATVR register. According to the user manual it is: ENET0->ATCR |= ENET_ATCR_CAPTURE_MASK; while(ENET0->ATCR & ENET_ATCR_CAPTURE_MASK); ts_counter_ns = ENET0->ATVR; Incorrect behavior for ENET_ATCR[Capture and Restart Bits]. These bits will always read a value zero. According to SPEC, when these bits are set to 1'b1, these should hold value 1'b1 until the counter value is capture in the register clock domain. Unfortunately there is a bug with the way the bit "ENET_ATCR_CAPTURE" clears. So need something like: ENET0->ATCR |= ENET_ATCR_CAPTURE_MASK; wait(); ts_counter_ns = ENET0->ATVR; The wait-time to be at least 6 clock cycle of the slower clock between the register clock and the 1588 clock. The 1588 ts_clk is 25Mhz, register clock is 66Mhz, so the wait-time must be greater than 240ns (40ns * 6). The workaround is that adding 1us delay before read ATVR. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00300156 net: fec: Workaround for imx6sx enet tx hang when enable three ↵Fugang Duan2014-04-16
| | | | | | | | | | | | | | | | | | | | | | | queues When enable three queues on imx6sx enet, and then do tx performance test with iperf tool, after some time running, tx hang. Found that: If uDMA is running, software set TDAR may cause tx hang. If uDMA is in idle, software set TDAR don't cause tx hang. There is a TDAR race condition for mutliQ when the software sets TDAR and the UDMA clears TDAR simultaneously or in a small window (2-4 cycles). This will cause the udma_tx and udma_tx_arbiter state machines to hang. The issue exist at i.MX6SX enet IP. So, the Workaround is checking TDAR status four time, if TDAR cleared by hardware and then write TDAR, otherwise don't set TDAR. The patch is only one Workaround for the issue TKT210582. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00300439-5 can: flexcan: parse stop mode control bits from device treeDong Aisheng2014-04-16
| | | | | | | | | | Starting from IMX6, the flexcan stop mode control bits is SoC specific, move it out of IP driver and parse it from devicetree. It's good from maintain perspective and can avoid adding too many SoC specifi bits in driver but with no IP changes when the IMX SoC series keep growing. Signed-off-by: Dong Aisheng <b29396@freescale.com>
* ENGR00300628 net: fec: align rx data buffer size for dma map/unmapFugang Duan2014-04-16
| | | | | | | Align allocated rx data buffer size for dma map/unmap, otherwise kernel print warning when enable DMA_API_DEBUG. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00300625-1 net: fec: avoid imx6sx enet-avb Last bit is not setFugang Duan2014-04-16
| | | | | | | | | | | | | | | When imx6sx-arm2/sdb platform do suspend/resume with nfs rootfs, there have warning like "rcv is not +last", which means the frame BD last bit is not set. The root cause: enet suspend will disable phy clock, phy link down, after resume back, enet MAC redo initial and ready to tx/rx packet, but phy still is not ready which is doing auto-negotiation. So, when enet output clock to phy, or there have regulator control phy power, after phy is ready and then re-init enet MAC. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00300474-1 net: fec: Revert "ENGR00299593-4 net:fec: return ↵Luwei Zhou2014-04-16
| | | | | | | | | | -EPROBE_DEFER when phy regulator isn't initialized" There is some issue when using regulator to contorl phy supply. We will turn to using GPIO pin control phy supply. This reverts fec driver modification in commit a494258a9f24944d710dd375cc12f204deccaa47. Signed-off-by: Luwei Zhou <b45643@freescale.com>
* ENGR00299593-4 net:fec: return -EPROBE_DEFER when phy regulator isn't ↵Luwei Zhou2014-04-16
| | | | | | | | | | initialized On i.mx6sx-17x17-arm2 board, fec needs to supply phy via max7322 extention gpio. When fec probe, the phy regulator doesn't complete initilization. The fec_probe needs to return -EPROBE_DEFER and kernel will retry fec_probe after a delay. Signed-off-by: Luwei Zhou <b45643@freescale.com>
* net: fec: fix potential issue to avoid fec interrupt lost and crc errorFugang Duan2014-04-16
| | | | | | | | | | | | | | | | | | | | The current flow: Set TX BD ready, and then set "INT" and "PINS" bit to enable tx interrupt generation and crc checksum. There has potential issue like as: CPU fec uDMA Set tx ready bit uDMA start the BD transmission Set "INT" bit Set "PINS" bit ... Above situation cause fec tx interrupt lost and fec MAC don't do CRC checksum. The patch fix the potential issue. Signed-off-by: Fugang Duan <B38611@freescale.com> Acked-by: Frank Li <Frank.li@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ENGR00300078 net:fec: remove the ERR006358 workaround for imx6sx enetFugang Duan2014-04-16
| | | | | | Remove the ERR006358 workaround for imx6sx enet since it was fixed. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00300074-1 net:fec_ptp: avoid fec register access when clock is disabledFugang Duan2014-04-16
| | | | | | | | | | Avoid fec register access when clock is disabled. After fec probed or "ifconfig ethx down", it disable fec clock to save power. PTP use period timer softirq to read ptp timer count register regardless any ethernet status, which cause system hang. The patch fix the issue. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00299323-20 net:fec: increase DMA queue numberFugang Duan2014-04-16
| | | | | | when enable interrupt coalesce, 8 BD is not enough. Signed-off-by: Frank Li <Frank.Li@freescale.com>
* ENGR00299323-19 net:fec: fix crash when no ethernet card attachedFrank Li2014-04-16
| | | | | | Fix kernel crash when no ethernet card attached. Signed-off-by: Frank Li <Frank.Li@freescale.com>
* net: fec_main: dma_map() only the length of the skbSebastian Siewior2014-04-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On tx submit the driver always dma_map_single() FEC_ENET_TX_FRSIZE (=2048) bytes. This works because we don't overwrite any memory after the data buffer, we remove it from cache if it was there. So we hurt performace in case the mapping of a smaller area makes a difference. There is also a bug: If the data area starts shortly before the end of RAM say 0xc7fffa10 and the RAM ends at 0xc8000000 then we have enough space to fit the data area (according to skb->len) but we would map beyond end of ram if we are using 2048. In v2.6.31 (against which kernel this patch made) there is the following check in dma_cache_maint(): |BUG_ON(!virt_addr_valid(start) || !virt_addr_valid(start + size - 1)); Since the area starting at 0xc8000000 is no longer virt_addr_valid() we BUG() during dma_map_single(). The BUG() statement was removed in v3.5-rc1 as per 2dc6a016 ("ARM: dma-mapping: use asm-generic/dma-mapping-common.h"). This patch was tested on v2.6.31 and then forward-ported and compile tested only against the net tree. I think it is still worth fixing mainline even after the BUG() statement is gone. Tested-by: Fugang Duan <B38611@freescale.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Fugang Duan <B38611@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net> Conflicts: drivers/net/ethernet/freescale/fec_main.c
* ENGR00299323-18 net:fec: init complete variable in early to avoid kernel dumpFugang Duan2014-04-16
| | | | | | | | Software clear the MDIO interrupt before MDIO bus access, but MAC still generate MDIO interrupt. The issue only happen on imx6slx chip. The patch is a workaround to avoid kernel dump. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00299323-17 net:fec: Add Ftype to BD to distiguish three queues for AVBFugang Duan2014-04-16
| | | | | | | | | Add Ftype field to BD to distiguish three queues for AVB: 0 -> Best Effort 1 -> ClassA 2 -> ClassB Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00299323-15 net:fec: remove unnessary memory copy for address alignment ↵Fugang Duan2014-04-16
| | | | | | | | | in .xmit() i.MX6SX enet-avb IP support buffer address byte alignment for tx DMA transfer, so remove the unnessary memory copy for the enet avb IP. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00299323-10 net:fec: add enet AVB Ubuntu Gstreamer demo supportFugang Duan2014-04-16
| | | | | | | | | | | | | | | | | | | | Support Gstreamer AVB demo support. ring1 -> ClassA, ring2 -> ClassB, ring0 -> Best Effort For QoS: ring1 > ring2 > ring0 For bandwidth reverse: 50% bandwidth -> ClassA 33% bandwidth -> ClassB 17% bandwidth -> Best effort queue In general, ClassA run audio, ClassB run video. Since AVB demo use big bandwidth streaming, video cost more than 33Mbps bandwidth, and with Qos limitation: ClassA >= ClassB > Best effort, so we have to change ring2 bandwidth equal to ring1 bandwidth (50%). After validate on FPGA, AVB demo can work fine for audio and video. Signed-off-by: Fugang Duan <B38611@freescale.com>
* ENGR00299323-9 net:fec: add enet-avb interrupt coalescence feature supportFugang Duan2014-04-16
| | | | | | | | | | | | | | | Add enet-avb interrupt coalescence feature support. By default, init the interrupt coalescing frame count threshold and timer threshold. Supply the ethtool interfaces as below for user tuning to improve enet performance: rx_max_coalesced_frames rx_coalesce_usecs tx_max_coalesced_frames tx_coalesce_usecs Signed-off-by: Fugang Duan <B38611@freescale.com>
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-04 22:12:11 -0400