* Re: Qualcomm Atheros Ath10k and Ath11k CE Buffer DMA alignment issues on Raspberry PI CM4 - Aarch64 architecture [not found] <35F57D80-C7F7-47B2-BEC8-533006C72E2A@windtalker.com> @ 2021-10-01 6:38 ` Kalle Valo 2021-10-01 11:17 ` Govind Singh 0 siblings, 1 reply; 2+ messages in thread From: Kalle Valo @ 2021-10-01 6:38 UTC (permalink / raw) To: Maurice Smulders; +Cc: linux-wireless@vger.kernel.org, ath10k, ath11k Maurice Smulders <Maurice.Smulders@windtalker.com> writes: > I am trying to use the QCA6174A and the QCA6390 on a custom board using a PCIe switch - but that doesn't matter - It still fails w/o the switch: > > lspci > 00:00.0 PCI bridge: Broadcom Inc. and subsidiaries BCM2711 PCIe Bridge (rev 20) > 01:00.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch > 02:01.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch > 02:02.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch > 02:03.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch > 02:04.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch > 02:05.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch > 05:00.0 Unassigned class [ff00]: Qualcomm QCA6390 Wireless Network Adapter [AX500-DBS (2x2)] > 06:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32) > > Both device drivers do not work. I changed the CE code to use the GFP_DMA32 flag as an attempt to allocate the memory correctly, but DMESG shows > > [pi@node6745 ~]$ dmesg | grep ath > [ 5.801896] ath10k_pci 0000:06:00.0: ath10k_ce_alloc_src_ring: Not unaligned <--- User message exit from this function > [ 5.804284] ath10k_pci 0000:06:00.0: failed to alloc CE src ring 0: -12 > [ 5.813138] ath10k_pci 0000:06:00.0: failed to allocate copy engine pipe 0: -12 > [ 5.815414] ath10k_pci 0000:06:00.0: failed to allocate copy engine pipes: -12 > [ 5.818002] ath10k_pci 0000:06:00.0: failed to setup resource: -12 > [ 5.826953] ath10k_pci: probe of 0000:06:00.0 failed with error -12 > [ 5.855993] ath11k_pci 0000:05:00.0: WARNING: ath11k PCI support is experimental! > [ 5.896148] ath11k_pci 0000:05:00.0: BAR 0: assigned [mem 0x600000000-0x600ffffff 64bit] > [ 5.900236] ath11k_pci 0000:05:00.0: enabling device (0000 -> 0002) > [ 5.914050] ath11k_pci: probe of 0000:05:00.0 failed with error -12 > > Error -12 (ENOMEM) gets returned and the driver doesn't work... > > 05:00.0 Unassigned class [ff00]: Qualcomm QCA6390 Wireless Network Adapter [AX500-DBS (2x2)] > Subsystem: Qualcomm Device 0108 > Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- > Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- > Region 0: Memory at 600000000 (64-bit, non-prefetchable) [size=16M] > Capabilities: <access denied> > Kernel modules: ath11k_pci > > 06:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32) > Subsystem: ASUSTeK Computer Inc. Device 86e0 > Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- > Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- > Interrupt: pin A routed to IRQ 48 > Region 0: Memory at 601000000 (64-bit, non-prefetchable) [disabled] [size=2M] > Capabilities: <access denied> > Kernel modules: ath10k_pci > > I am at a loss what to do here. The ath11k driver has the SINGLE MSI fix built in. > > Any ideas' what I can try to fix this problem on the raspberry Pi CM4? Sorry, no ideas. But adding ath10k and ath11k lists, maybe people there can propose something. -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches -- ath11k mailing list ath11k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath11k ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Qualcomm Atheros Ath10k and Ath11k CE Buffer DMA alignment issues on Raspberry PI CM4 - Aarch64 architecture 2021-10-01 6:38 ` Qualcomm Atheros Ath10k and Ath11k CE Buffer DMA alignment issues on Raspberry PI CM4 - Aarch64 architecture Kalle Valo @ 2021-10-01 11:17 ` Govind Singh 0 siblings, 0 replies; 2+ messages in thread From: Govind Singh @ 2021-10-01 11:17 UTC (permalink / raw) To: Kalle Valo, Maurice Smulders Cc: linux-wireless@vger.kernel.org, ath10k, ath11k On 01-10-2021 12:08, Kalle Valo wrote: > Maurice Smulders <Maurice.Smulders@windtalker.com> writes: > >> I am trying to use the QCA6174A and the QCA6390 on a custom board using a PCIe switch - but that doesn't matter - It still fails w/o the switch: >> >> lspci >> 00:00.0 PCI bridge: Broadcom Inc. and subsidiaries BCM2711 PCIe Bridge (rev 20) >> 01:00.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch >> 02:01.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch >> 02:02.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch >> 02:03.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch >> 02:04.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch >> 02:05.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch >> 05:00.0 Unassigned class [ff00]: Qualcomm QCA6390 Wireless Network Adapter [AX500-DBS (2x2)] >> 06:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32) >> >> Both device drivers do not work. I changed the CE code to use the GFP_DMA32 flag as an attempt to allocate the memory correctly, but DMESG shows >> >> [pi@node6745 ~]$ dmesg | grep ath >> [ 5.801896] ath10k_pci 0000:06:00.0: ath10k_ce_alloc_src_ring: Not unaligned <--- User message exit from this function >> [ 5.804284] ath10k_pci 0000:06:00.0: failed to alloc CE src ring 0: -12 >> [ 5.813138] ath10k_pci 0000:06:00.0: failed to allocate copy engine pipe 0: -12 >> [ 5.815414] ath10k_pci 0000:06:00.0: failed to allocate copy engine pipes: -12 >> [ 5.818002] ath10k_pci 0000:06:00.0: failed to setup resource: -12 >> [ 5.826953] ath10k_pci: probe of 0000:06:00.0 failed with error -12 >> [ 5.855993] ath11k_pci 0000:05:00.0: WARNING: ath11k PCI support is experimental! >> [ 5.896148] ath11k_pci 0000:05:00.0: BAR 0: assigned [mem 0x600000000-0x600ffffff 64bit] >> [ 5.900236] ath11k_pci 0000:05:00.0: enabling device (0000 -> 0002) >> [ 5.914050] ath11k_pci: probe of 0000:05:00.0 failed with error -12 >> >> Error -12 (ENOMEM) gets returned and the driver doesn't work... >> >> 05:00.0 Unassigned class [ff00]: Qualcomm QCA6390 Wireless Network Adapter [AX500-DBS (2x2)] >> Subsystem: Qualcomm Device 0108 >> Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- >> Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- >> Region 0: Memory at 600000000 (64-bit, non-prefetchable) [size=16M] >> Capabilities: <access denied> >> Kernel modules: ath11k_pci >> >> 06:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32) >> Subsystem: ASUSTeK Computer Inc. Device 86e0 >> Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- >> Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- >> Interrupt: pin A routed to IRQ 48 >> Region 0: Memory at 601000000 (64-bit, non-prefetchable) [disabled] [size=2M] >> Capabilities: <access denied> >> Kernel modules: ath10k_pci >> >> I am at a loss what to do here. The ath11k driver has the SINGLE MSI fix built in. >> >> Any ideas' what I can try to fix this problem on the raspberry Pi CM4? > Sorry, no ideas. But adding ath10k and ath11k lists, maybe people there > can propose something. In RPI CM4 board, pcie-32bit-dma configuration is required for QCA6174/QCA9880 module, which can be enabled using dt overlay. Also, you will have to enable legacy PCI IRQ mode(using modparam@ath10k_pci irq_mode=1) as MSI does not work. DT overlay change: 56b8b2c96118293ad6dec20203dada8116f7c664:overlays: Add pcie-32bit-dma overlay BR, Govind -- ath11k mailing list ath11k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath11k ^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-10-01 6:38 ` Qualcomm Atheros Ath10k and Ath11k CE Buffer DMA alignment issues on Raspberry PI CM4 - Aarch64 architecture Kalle Valo
2021-10-01 11:17 ` Govind Singh
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