Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx> writes: > Below patchset adds fast path support for uplink traffic by bypassing > HTC layer processing. This is enabled by making use of unused copy > engine 5 to receive HTT messages directly from HIF layer. From initial > validation in VHT80/5G mode TCP UL is improved to 900Mbps from ~840Mbps > in conducted test. > > -Rajkumar > > Rajkumar Manoharan (7): > ath10k: export htc tx rx handlers > ath10k: register per copy engine send completion callbacks > ath10k: register per copy engine receive callbacks > ath10k: export htt tx rx handlers > ath10k: Configure copy engine 5 for HTT messages > ath10k: remove unused dl_is_polled > ath10k: remove htc polling for tx completion With these patches I'm seeing a DMA warning every time with qca988x during firmware boot (tested three out of three times, rebooted after every test): [ 60.458260] ------------[ cut here ]------------ [ 60.458374] WARNING: CPU: 1 PID: 0 at lib/dma-debug.c:1090 check_unmap+0x815/0x940() [ 60.458457] ath10k_pci 0000:02:00.0: DMA-API: device driver tries to free an invalid DMA memory address [ 60.458557] Modules linked in: ath10k_pci ath10k_core ath mac80211 cfg80211 [last unloaded: cfg80211] [ 60.458941] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.3.0-rc3-wl-ath+ #1082 [ 60.458981] Hardware name: Hewlett-Packard HP ProBook 6540b/1722, BIOS 68CDD Ver. F.04 01/27/2010 [ 60.459021] 00000000 00000000 f4ef3de4 c133dd94 00000000 f4ef3e14 c10562de c1b3e12c [ 60.459378] f4ef3e40 00000000 c1b3d3b9 00000442 c13693c5 c13693c5 f435f840 f4ef3eb4 [ 60.461026] 00000000 f4ef3e2c c10563c3 00000009 f4ef3e24 c1b3e12c f4ef3e40 f4ef3ea4 [ 60.461528] Call Trace: [ 60.461592] [<c133dd94>] dump_stack+0x48/0x64 [ 60.461627] ath10k_pci 0000:02:00.0: qca988x hw2.0 (0x4100016c, 0x043202ff) fw 10.2.4.70.9-2 api 3 htt-ver 2.1 wmi-op 5 htt-op 2 cal otp max-sta 128 raw 0 hwcrypto 1 features no-p2p,raw-mode [ 60.461643] ath10k_pci 0000:02:00.0: debug 1 debugfs 1 tracing 1 dfs 1 testmode 1 [ 60.461718] [<c10562de>] warn_slowpath_common+0x8e/0xd0 [ 60.461750] [<c13693c5>] ? check_unmap+0x815/0x940 [ 60.461781] [<c13693c5>] ? check_unmap+0x815/0x940 [ 60.461814] [<c10563c3>] warn_slowpath_fmt+0x33/0x40 [ 60.461844] [<c13693c5>] check_unmap+0x815/0x940 [ 60.461881] [<c18c0c06>] ? _raw_spin_unlock_irqrestore+0x36/0x60 [ 60.461915] [<c10aac14>] ? trace_hardirqs_on_caller+0xa4/0x1c0 [ 60.461954] [<fa1cf15d>] ? ath10k_dbg+0x6d/0x140 [ath10k_core] [ 60.461989] [<c1088e35>] ? local_clock+0x25/0x30 [ 60.462020] [<c136974c>] debug_dma_unmap_page+0x8c/0xa0 [ 60.462053] [<fa24dc2f>] ath10k_pci_htt_tx_cb+0x8f/0xb0 [ath10k_pci] [ 60.462085] [<fa24dc70>] ath10k_pci_htt_rx_cb+0x20/0x30 [ath10k_pci] [ 60.462117] [<fa2517fc>] ath10k_ce_per_engine_service+0x5c/0xa0 [ath10k_pci] [ 60.462162] [<fa2518b7>] ath10k_ce_per_engine_service_any+0x77/0x90 [ath10k_pci] [ 60.462194] [<fa24f85b>] ath10k_pci_tasklet+0x1b/0x50 [ath10k_pci] [ 60.462226] [<c105bc4e>] tasklet_action+0x9e/0xb0 [ 60.462257] [<c105b17b>] __do_softirq+0xbb/0x3c0 [ 60.462288] [<c105b0c0>] ? trace_event_raw_event_irq_handler_entry+0xa0/0xa0 [ 60.462321] [<c10059b9>] do_softirq_own_stack+0x29/0x40 [ 60.462353] <IRQ> [<c105b716>] irq_exit+0x86/0xb0 [ 60.462427] [<c18c2310>] do_IRQ+0x60/0x120 [ 60.462493] [<c10a4deb>] ? trace_hardirqs_off+0xb/0x10 [ 60.462575] [<c18c1931>] common_interrupt+0x31/0x38 [ 60.462617] [<c1694fa9>] ? cpuidle_enter_state+0xc9/0x350 [ 60.462648] [<c1696879>] ? menu_select+0x239/0x4b0 [ 60.462682] [<c1695264>] cpuidle_enter+0x14/0x20 [ 60.462714] [<c109becc>] call_cpuidle+0x3c/0x70 [ 60.462757] [<c109c0a9>] cpu_startup_entry+0x1a9/0x390 [ 60.462789] [<c1038b75>] start_secondary+0x105/0x150 [ 60.462820] ---[ end trace 4bfd4799ecf8f81b ]--- -- Kalle Valo -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
