[PATCH v3]wifi: ath12k: Add firmware coredump collection support

[Kalle Valo]

Sowmiya Sree Elavalagan <quic_ssreeela at quicinc.com> wrote:

> In case of firmware assert snapshot of firmware memory is essential for
> debugging. Add firmware coredump collection support for PCI bus.
> Collect RDDM and firmware paging dumps from MHI and pack them in TLV
> format and also pack various memory shared during QMI phase in separate
> TLVs.  Add necessary header and share the dumps to user space using dev
> coredump framework. Coredump collection is disabled by default and can
> be enabled using menuconfig. Dump collected for a radio is 55 MB
> approximately.
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.2.1-00201-QCAHKSWPL_SILICONZ-1
> 
> Signed-off-by: Sowmiya Sree Elavalagan <quic_ssreeela at quicinc.com>
> Acked-by: Jeff Johnson <quic_jjohnson at quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo at quicinc.com>

This didn't compile for me, I added this to pci.c:

+#include <linux/vmalloc.h>

Also in the pending branch I made some whitespace in struct ath12k_dump_file_data:

https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=pending&id=44ae07628b68375f476895f4fc1e89a570790ac0

Any tips how to test this until we have the debugfs interface to crash the firmware?

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20240325183414.4016663-1-quic_ssreeela@quicinc.com/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches