源码是从 https://gitee.com/de-eem/openwrt 搬过来的
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Josef Schlehofer ef223e58a3 mvebu: PCI: aardvark: Implement workaround for PCIe Completion Timeout
Turris MOX randomly crashes up, when there is connected miniPCIe card
MediaTek MT7915 with the following output:

[   71.457007] Internal error: synchronous external abort: 96000210 [#1] SMP
[   71.464021] Modules linked in: xt_connlimit pppoe ppp_async nf_conncount iptable_nat ath9k xt_state xt_nat xt_helper xt_conntrack xt_connmark xt_connbytes xt_REDIREl
[   71.464187]  btintel br_netfilter bnep bluetooth ath9k_hw ath10k_pci ath10k_core ath sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_mg
[   71.629589] CPU: 0 PID: 1298 Comm: kworker/u5:3 Not tainted 5.4.114 #0
[   71.636319] Hardware name: CZ.NIC Turris Mox Board (DT)
[   71.641725] Workqueue: napi_workq napi_workfn
[   71.646221] pstate: 80400085 (Nzcv daIf +PAN -UAO)
[   71.651169] pc : mt76_set_irq_mask+0x118/0x150 [mt76]
[   71.656385] lr : mt7915_init_debugfs+0x358/0x368 [mt7915e]
[   71.662038] sp : ffffffc010003cd0
[   71.665451] x29: ffffffc010003cd0 x28: 0000000000000060
[   71.670929] x27: ffffffc010a56f98 x26: ffffffc010c0fa9a
[   71.676407] x25: ffffffc010ba8788 x24: ffffff803e01fe00
[   71.681885] x23: 0000000000000030 x22: ffffffc010003dc4
[   71.687361] x21: 0000000000000000 x20: ffffff803e01fea4
[   71.692839] x19: ffffff803cb725c0 x18: 000000002d660780
[   71.698317] x17: 0000000000000000 x16: 0000000000000001
[   71.703795] x15: 0000000000005ee0 x14: ffffffc010d1d000
[   71.709272] x13: 0000000000002f70 x12: 0000000000000000
[   71.714749] x11: 0000000000000000 x10: 0000000000000040
[   71.720226] x9 : ffffffc010bbe980 x8 : ffffffc010bbe978
[   71.725704] x7 : ffffff803e4003f0 x6 : 0000000000000000
[   71.731181] x5 : ffffffc02f240000 x4 : ffffffc010003e00
[   71.736658] x3 : 0000000000000000 x2 : ffffffc008e3f230
[   71.742135] x1 : 00000000000d7010 x0 : ffffffc0114d7010
[   71.747613] Call trace:
[   71.750137]  mt76_set_irq_mask+0x118/0x150 [mt76]
[   71.754990]  mt7915_dual_hif_set_irq_mask+0x108/0xdc0 [mt7915e]
[   71.761098]  __handle_irq_event_percpu+0x6c/0x170
[   71.765950]  handle_irq_event_percpu+0x34/0x88
[   71.770531]  handle_irq_event+0x40/0xb0
[   71.774486]  handle_level_irq+0xe0/0x170
[   71.778530]  generic_handle_irq+0x24/0x38
[   71.782667]  advk_pcie_irq_handler+0x11c/0x238
[   71.787249]  __handle_irq_event_percpu+0x6c/0x170
[   71.792099]  handle_irq_event_percpu+0x34/0x88
[   71.796680]  handle_irq_event+0x40/0xb0
[   71.800633]  handle_fasteoi_irq+0xdc/0x190
[   71.804855]  generic_handle_irq+0x24/0x38
[   71.808988]  __handle_domain_irq+0x60/0xb8
[   71.813213]  gic_handle_irq+0x8c/0x198
[   71.817077]  el1_irq+0xf0/0x1c0
[   71.820314]  el1_da+0xc/0xc0
[   71.823288]  mt76_set_irq_mask+0x118/0x150 [mt76]
[   71.828141]  mt7915_mac_tx_free+0x4c4/0x828 [mt7915e]
[   71.833352]  mt7915_queue_rx_skb+0x5c/0xa8 [mt7915e]
[   71.838473]  mt76_dma_cleanup+0x89c/0x1248 [mt76]
[   71.843329]  __napi_poll+0x38/0xf8
[   71.846835]  napi_workfn+0x58/0xb0
[   71.850342]  process_one_work+0x1fc/0x390
[   71.854475]  worker_thread+0x48/0x4d0
[   71.858252]  kthread+0x120/0x128
[   71.861581]  ret_from_fork+0x10/0x1c
[   71.865273] Code: 52800000 d65f03c0 f9562c00 8b214000 (b9400000)
[   71.871560] ---[ end trace 1d4e29987011411b ]---
[   71.876320] Kernel panic - not syncing: Fatal exception in interrupt
[   71.882875] SMP: stopping secondary CPUs
[   71.886923] Kernel Offset: disabled
[   71.890519] CPU features: 0x0002,00002008
[   71.894649] Memory Limit: none
[   71.897799] Rebooting in 3 seconds..

Patch is awaiting upstream merge:
https://lore.kernel.org/linux-pci/20220802123816.21817-1-pali@kernel.org/T/#u

There was also discussion about it in the linux-pci mailing list, where can
be found response from Marvell's employee regarding A3720 PCIe erratum 3.12, which seems to provide further details which help this issue:
https://lore.kernel.org/linux-pci/BN9PR18MB425154FE5019DCAF2028A1D5DB8D9@BN9PR18MB4251.namprd18.prod.outlook.com/t/#u

Reported-by: Ondřej Caletka <ondrej@caletka.cz> [Turris MOX]
Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>
Reviewed-by: Robert Marko <robimarko@gmail.com>
2022-09-11 01:30:11 +02:00
.github CI: kernel: Cache external toolchain 2022-09-10 13:30:11 +02:00
config scripts: always check certificates 2022-09-10 15:24:22 +02:00
include kernel: bump 5.10 to 5.10.142 2022-09-11 01:30:11 +02:00
LICENSES LICENSES: include all used licenses in LICENSES directory 2021-02-14 19:21:38 +01:00
package ramips: add support for Linksys E7350 2022-09-11 01:30:11 +02:00
scripts scripts: always check certificates 2022-09-10 15:24:22 +02:00
target mvebu: PCI: aardvark: Implement workaround for PCIe Completion Timeout 2022-09-11 01:30:11 +02:00
toolchain toolchain: gdb: update to 12.1 2022-09-02 21:57:33 +02:00
tools Revert "tools/meson: update to 0.63.1" 2022-09-07 04:47:04 +01:00
.gitattributes
.gitignore .gitgnore: add llvm-bpf 2021-11-21 18:18:01 +01:00
BSDmakefile
Config.in build: scripts/config - update to kconfig-v5.14 2022-02-19 13:10:01 +01:00
COPYING COPYING: add COPYING file to specify project licenses 2021-02-14 19:21:38 +01:00
feeds.conf.default feeds: use git-src-full to allow Git versioning 2022-02-15 00:24:24 +01:00
Makefile Makefile: replace head call with grep's -m 2022-09-10 15:42:36 +02:00
README.md README: mention video feed 2021-10-19 15:47:44 -10:00
rules.mk scripts: always check certificates 2022-09-10 15:24:22 +02:00

OpenWrt logo

OpenWrt Project is a Linux operating system targeting embedded devices. Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with package management. This frees you from the application selection and configuration provided by the vendor and allows you to customize the device through the use of packages to suit any application. For developers, OpenWrt is the framework to build an application without having to build a complete firmware around it; for users this means the ability for full customization, to use the device in ways never envisioned.

Sunshine!

Development

To build your own firmware you need a GNU/Linux, BSD or MacOSX system (case sensitive filesystem required). Cygwin is unsupported because of the lack of a case sensitive file system.

Requirements

You need the following tools to compile OpenWrt, the package names vary between distributions. A complete list with distribution specific packages is found in the Build System Setup documentation.

binutils bzip2 diff find flex gawk gcc-6+ getopt grep install libc-dev libz-dev
make4.1+ perl python3.6+ rsync subversion unzip which

Quickstart

  1. Run ./scripts/feeds update -a to obtain all the latest package definitions defined in feeds.conf / feeds.conf.default

  2. Run ./scripts/feeds install -a to install symlinks for all obtained packages into package/feeds/

  3. Run make menuconfig to select your preferred configuration for the toolchain, target system & firmware packages.

  4. Run make to build your firmware. This will download all sources, build the cross-compile toolchain and then cross-compile the GNU/Linux kernel & all chosen applications for your target system.

The main repository uses multiple sub-repositories to manage packages of different categories. All packages are installed via the OpenWrt package manager called opkg. If you're looking to develop the web interface or port packages to OpenWrt, please find the fitting repository below.

  • LuCI Web Interface: Modern and modular interface to control the device via a web browser.

  • OpenWrt Packages: Community repository of ported packages.

  • OpenWrt Routing: Packages specifically focused on (mesh) routing.

  • OpenWrt Video: Packages specifically focused on display servers and clients (Xorg and Wayland).

Support Information

For a list of supported devices see the OpenWrt Hardware Database

Documentation

Support Community

  • Forum: For usage, projects, discussions and hardware advise.
  • Support Chat: Channel #openwrt on oftc.net.

Developer Community

License

OpenWrt is licensed under GPL-2.0