On 01-10-2021 12:08, Kalle Valo wrote:
Maurice Smulders <Maurice.Smulders@xxxxxxxxxxxxxx> 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
