From: Kalle Valo <kvalo@codeaurora.org>
To: Wen Gong <wgong@codeaurora.org>
Cc: linux-wireless@vger.kernel.org, ath10k@lists.infradead.org
Subject: Re: [PATCH v9 1/4] ath10k: disable TX complete indication of htt for sdio
Date: Thu, 9 Apr 2020 14:52:48 +0000 (UTC) [thread overview]
Message-ID: <20200409145248.B7D3AC433BA@smtp.codeaurora.org> (raw)
In-Reply-To: <20200212080415.31265-2-wgong@codeaurora.org>
Wen Gong <wgong@codeaurora.org> wrote:
> For sdio chip, it is high latency bus, all the TX packet's content will
> be tranferred from HOST memory to firmware memory via sdio bus, then it
> need much more memory in firmware than low latency bus chip, for low
> latency chip, such as PCI-E, it only need to transfer the TX descriptor
> via PCI-E bus to firmware memory. For sdio chip, reduce the complexity of
> TX logic will help TX efficiency since its memory is limited, and it will
> reduce the TX circle's time of each packet and then firmware will have more
> memory for TX since TX complete also need memeory.
>
> This patch disable TX complete indication from firmware for htt data
> packet, it will not have TX complete indication from firmware to ath10k.
> It will cut the cost of bus bandwidth of TX complete and make the TX
> logic of firmware simpler, it results in significant performance
> improvement on TX path.
>
> Udp TX throughout is 130Mbps without this patch, and it arrives
> 400Mbps with this patch.
>
> The downside of this patch is the command "iw wlan0 station dump" will
> show 0 for "tx retries" and "tx failed" since all tx packet's status
> is success.
>
> This patch only effect sdio chip, it will not effect PCI, SNOC etc.
>
> Tested with QCA6174 SDIO with firmware
> WLAN.RMH.4.4.1-00017-QCARMSWPZ-1
>
> Signed-off-by: Wen Gong <wgong@codeaurora.org>
> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2 patches applied to ath-next branch of ath.git, thanks.
d81686d33356 ath10k: disable TX complete indication of htt for sdio
c61a74837043 ath10k: change ATH10K_SDIO_BUS_REQUEST_MAX_NUM from 64 to 1024
--
https://patchwork.kernel.org/patch/11377827/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
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next prev parent reply other threads:[~2020-04-09 14:52 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-12 8:04 [PATCH v9 0/4] ath10k: improve throughout of TX of sdio Wen Gong
2020-02-12 8:04 ` Wen Gong
2020-02-12 8:04 ` [PATCH v9 1/4] ath10k: disable TX complete indication of htt for sdio Wen Gong
2020-02-12 8:04 ` Wen Gong
2020-04-07 5:44 ` Kalle Valo
2020-04-07 5:44 ` Kalle Valo
[not found] ` <20200407054431.6B2A0C433BA@smtp.codeaurora.org>
2020-04-07 6:04 ` Wen Gong
2020-04-07 6:04 ` Wen Gong
2020-04-07 6:08 ` Kalle Valo
2020-04-07 6:08 ` Kalle Valo
2020-04-09 14:52 ` Kalle Valo
2020-04-09 14:52 ` Kalle Valo [this message]
2020-02-12 8:04 ` [PATCH v9 2/4] ath10k: change ATH10K_SDIO_BUS_REQUEST_MAX_NUM from 64 to 1024 Wen Gong
2020-02-12 8:04 ` Wen Gong
2020-02-12 8:04 ` [PATCH v9 3/4] ath10k: add htt TX bundle for sdio Wen Gong
2020-02-12 8:04 ` Wen Gong
2020-04-09 14:53 ` Kalle Valo
2020-04-09 14:53 ` Kalle Valo
2020-04-09 15:40 ` Wen Gong
2020-04-09 15:40 ` Wen Gong
2020-04-14 8:10 ` Kalle Valo
2020-04-14 8:10 ` Kalle Valo
2020-04-16 12:27 ` Kalle Valo
2020-04-16 12:27 ` Kalle Valo
2020-04-18 14:02 ` Wen Gong
2020-04-18 14:02 ` Wen Gong
2020-04-21 11:56 ` Kalle Valo
2020-04-21 11:56 ` Kalle Valo
2020-04-09 15:05 ` Kalle Valo
2020-04-09 15:05 ` Kalle Valo
2020-04-09 15:29 ` Wen Gong
2020-04-09 15:29 ` Wen Gong
2020-04-09 15:42 ` Kalle Valo
2020-04-09 15:42 ` Kalle Valo
2020-04-09 15:55 ` Wen Gong
2020-04-09 15:55 ` Wen Gong
2020-02-12 8:04 ` [PATCH v9 4/4] ath10k: enable alt data of TX path " Wen Gong
2020-02-12 8:04 ` Wen Gong
2020-04-10 6:21 ` [PATCH v9 0/4] ath10k: improve throughout of TX of sdio Wen Gong
2020-04-10 6:21 ` Wen Gong
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