From: Ping-Ke Shih <pkshih@realtek.com>
To: <kvalo@kernel.org>
Cc: <kevin_yang@realtek.com>, <linux-wireless@vger.kernel.org>
Subject: [PATCH 4/4] wifi: rtw89: pci: enlarge RX DMA buffer to consider size of RX descriptor
Date: Sun, 21 Jan 2024 15:18:26 +0800 [thread overview]
Message-ID: <20240121071826.10159-5-pkshih@realtek.com> (raw)
In-Reply-To: <20240121071826.10159-1-pkshih@realtek.com>
Hardware puts RX descriptor and packet in RX DMA buffer, so it could be
over one buffer size if packet size is 11454, and then it will be split
into two segments. WiFi 7 chips use larger size of RX descriptor, so
enlarge DMA buffer size according to RX descriptor to have better
performance and simple flow.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
drivers/net/wireless/realtek/rtw89/pci.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/realtek/rtw89/pci.h b/drivers/net/wireless/realtek/rtw89/pci.h
index 0543221b4c58..532f78eaf6df 100644
--- a/drivers/net/wireless/realtek/rtw89/pci.h
+++ b/drivers/net/wireless/realtek/rtw89/pci.h
@@ -997,7 +997,7 @@
#define RTW89_PCI_TXWD_NUM_MAX 512
#define RTW89_PCI_TXWD_PAGE_SIZE 128
#define RTW89_PCI_ADDRINFO_MAX 4
-#define RTW89_PCI_RX_BUF_SIZE 11460
+#define RTW89_PCI_RX_BUF_SIZE (11454 + 40) /* +40 for rtw89_rxdesc_long_v2 */
#define RTW89_PCI_POLL_BDRAM_RST_CNT 100
#define RTW89_PCI_MULTITAG 8
--
2.25.1
prev parent reply other threads:[~2024-01-21 7:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-21 7:18 [PATCH 0/4] wifi: rtw89: pci: refine PCI SER, RX tag and RX DMA buffer size Ping-Ke Shih
2024-01-21 7:18 ` [PATCH 1/4] wifi: rtw89: pci: update SER timer unit and timeout time Ping-Ke Shih
2024-02-01 10:18 ` Kalle Valo
2024-01-21 7:18 ` [PATCH 2/4] wifi: rtw89: pci: interrupt v2 refine IMR for SER Ping-Ke Shih
2024-01-21 7:18 ` [PATCH 3/4] wifi: rtw89: pci: validate RX tag for RXQ and RPQ Ping-Ke Shih
2024-01-21 7:18 ` Ping-Ke Shih [this message]
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