diff options
| author | Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com> | 2025-04-08 11:36:37 +0530 |
|---|---|---|
| committer | Jeff Johnson <jeff.johnson@oss.qualcomm.com> | 2025-04-11 21:19:31 -0700 |
| commit | f5755c23ed8a4603194f6425828a2760f814e117 (patch) | |
| tree | 8bdfaaf9fdb449e724849783337eb967193bb69a /drivers/net/wireless/ath/ath12k/qmi.c | |
| parent | 929069c1bdb70c6332c15f3978d4c8830bc43efd (diff) | |
wifi: ath12k: reset MLO global memory during recovery
When operating with multiple devices grouped together, the firmware stores
data related to the state machine of each partner device in the MLO global
memory region. If the firmware crashes, it updates the state to 'crashed'.
During recovery, this memory is shared with the firmware again, and upon
detecting the 'crashed' state, it reasserts. This leads to a loop of
firmware asserts and it never recovers.
Hence to fix this issue, once all devices in the group have been asserted
and powered down, reset the MLO global memory region.
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250408-fix_reboot_issues_with_hw_grouping-v4-9-95e7bf048595@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath12k/qmi.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath12k/qmi.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath12k/qmi.c b/drivers/net/wireless/ath/ath12k/qmi.c index 7df6c6eebed6..c867130f1ddc 100644 --- a/drivers/net/wireless/ath/ath12k/qmi.c +++ b/drivers/net/wireless/ath/ath12k/qmi.c @@ -2439,6 +2439,28 @@ out: return ret; } +void ath12k_qmi_reset_mlo_mem(struct ath12k_hw_group *ag) +{ + struct target_mem_chunk *mlo_chunk; + int i; + + lockdep_assert_held(&ag->mutex); + + if (!ag->mlo_mem.init_done || ag->num_started) + return; + + for (i = 0; i < ARRAY_SIZE(ag->mlo_mem.chunk); i++) { + mlo_chunk = &ag->mlo_mem.chunk[i]; + + if (mlo_chunk->v.addr) + /* TODO: Mode 0 recovery is the default mode hence resetting the + * whole memory region for now. Once Mode 1 support is added, this + * needs to be handled properly + */ + memset(mlo_chunk->v.addr, 0, mlo_chunk->size); + } +} + static void ath12k_qmi_free_mlo_mem_chunk(struct ath12k_base *ab, struct target_mem_chunk *chunk, int idx) |