Revert "ath10k: fix DMA related firmware crashes on multiple devices"
[ Upstream commita1769bb68a
] This reverts commit76d164f582
. PCIe hung issue was observed on multiple platforms. The issue was reproduced when DUT was configured as AP and associated with 50+ STAs. For QCA9984/QCA9888, the DMA_BURST_SIZE register controls the AXI burst size of the RD/WR access to the HOST MEM. 0 - No split , RAW read/write transfer size from MAC is put out on bus as burst length 1 - Split at 256 byte boundary 2,3 - Reserved With PCIe protocol analyzer, we can see DMA Read crossing 4KB boundary when issue happened. It broke PCIe spec and caused PCIe stuck. So revert the default value from 0 to 1. Tested: IPQ8064 + QCA9984 with firmware 10.4-3.10-00047 QCS404 + QCA9984 with firmware 10.4-3.9.0.2--00044 Synaptics AS370 + QCA9888 with firmware 10.4-3.9.0.2--00040 Signed-off-by: Zhi Chen <zhichen@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -810,7 +810,7 @@ ath10k_is_rssi_enable(struct ath10k_hw_params *hw,
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#define TARGET_10_4_TX_DBG_LOG_SIZE 1024
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#define TARGET_10_4_NUM_WDS_ENTRIES 32
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#define TARGET_10_4_DMA_BURST_SIZE 0
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#define TARGET_10_4_DMA_BURST_SIZE 1
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#define TARGET_10_4_MAC_AGGR_DELIM 0
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#define TARGET_10_4_RX_SKIP_DEFRAG_TIMEOUT_DUP_DETECTION_CHECK 1
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#define TARGET_10_4_VOW_CONFIG 0
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