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| author |   Rakesh Pillai <pillair@codeaurora.org> | 2018-09-03 22:07:02 +0530 |
|---|---|---|
| committer |   Kalle Valo <kvalo@codeaurora.org> | 2019-02-04 17:49:11 +0200 |
| commit | 5b9030cee1bedba934adb5c7ae708e510dddd0f0 (patch) | |
| tree | e8b03effaae4bf3ca6e0f66f96c96fdb86b4cf0d /drivers/net/wireless/ath/ath10k/snoc.c | |
| parent | ath6kl: return error code in ath6kl_wmi_set_roam_lrssi_cmd() (diff) | |
| download | linux-dev-5b9030cee1bedba934adb5c7ae708e510dddd0f0.tar.xz linux-dev-5b9030cee1bedba934adb5c7ae708e510dddd0f0.zip | |
ath10k: Set DMA address mask to 35 bit for WCN3990
WCN3990 is a 37-bit target but can address memory range
only upto 35 bits. The 36th bit is used to control the
smmu/iommu translation and the 37th bit is used by the
internal bus masters to access the wifi subsystem internal
SRAM. With the DMA mask set to 37i-bit, the host driver
can get 37-bit dma address, which leads to incorrect
address access in the target.
Hence the host driver can used addresses upto 35-bit
for WCN3990. Fix the dma mask for wcn3990 to 35-bit,
instead of 37-bit.
Tested HW: WCN3990
Tested FW: WLAN.HL.2.0-01188-QCAHLSWMTPLZ-1
Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Rakesh Pillai <pillair@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/snoc.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/snoc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c index 54efe6be8f1d..0032bc5dd934 100644 --- a/drivers/net/wireless/ath/ath10k/snoc.c +++ b/drivers/net/wireless/ath/ath10k/snoc.c @@ -66,7 +66,7 @@ static void ath10k_snoc_pktlog_rx_cb(struct ath10k_ce_pipe *ce_state); static const struct ath10k_snoc_drv_priv drv_priv = { .hw_rev = ATH10K_HW_WCN3990, - .dma_mask = DMA_BIT_MASK(37), + .dma_mask = DMA_BIT_MASK(35), .msa_size = 0x100000, }; |