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[2a01:c22:7651:4500::e63]) by smtp.googlemail.com with ESMTPSA id 24-20020a05600c021800b003ee1acdb036sm12845895wmi.17.2023.04.03.13.24.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Apr 2023 13:24:52 -0700 (PDT) From: Martin Blumenstingl To: linux-wireless@vger.kernel.org Cc: Yan-Hsuan Chuang , Kalle Valo , Ulf Hansson , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-mmc@vger.kernel.org, Chris Morgan , Nitin Gupta , Neo Jou , Pkshih , Jernej Skrabec , Larry Finger , =?utf-8?q?Pali_Roh=C3=A1r?= , Martin Blumenstingl Subject: [PATCH v4 0/9] rtw88: Add SDIO support Date: Mon, 3 Apr 2023 22:24:31 +0200 Message-Id: <20230403202440.276757-1-martin.blumenstingl@googlemail.com> X-Mailer: git-send-email 2.40.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Recently the rtw88 driver has gained locking support for the "slow" bus types (USB, SDIO) as part of USB support. Thanks to everyone who helped make this happen! Based on the USB work (especially the locking part and various bugfixes) this series adds support for SDIO based cards. It's the result of a collaboration between Jernej and myself. Neither of us has access to the rtw88 datasheets. All of our work is based on studying the RTL8822BS and RTL8822CS vendor drivers and trial and error. Jernej and myself have tested this with RTL8822BS and RTL8822CS cards. Other users have confirmed that RTL8821CS support is working as well. RTL8723DS may also work (we tried our best to handle rtw_chip_wcpu_11n where needed) but has not been tested at this point. Jernej's results with a RTL8822BS: - Main functionality works - Had a case where no traffic got across the link until he issued a scan My results with a RTL8822CS: - 2.4GHz and 5GHz bands are both working - TX throughput on a 5GHz network is between 50 Mbit/s and 90 Mbit/s - RX throughput on a 5GHz network is at 19 Mbit/s (this seems to be an combination of the location of my board and the cheap antenna which are both hurting RX performance) A user shared his results on his own RTL8822CS off-list with me: - 50Mbit/s throughput in both directions A user shared his results on RTL8821CS off-list with me: - 50Mbps down and 25Mbps on a 5GHz network Changes since v3 at [2]: - fix rmmod / shutdown of the sdio.c module - use IS_ALIGNED consistently in sdio.c - direct/indirect read improvements which means that we can now read and write registers on older RTW_WCPU_11N cards. also this fixed potential IO issues with direct (instead of indirect) writes on SDIO 3.0 cards. thanks to Ping-Ke for the additional insights - sorted SDIO ID entries by their value - removed paragraph about RFC status of this series from the cover-letter Changes since v2 at [1]: - dropped RFC prefix as the majority of fixes were either addressing false positive smatch warnings, include ordering and other smaller fixes - RX aggregation is now enabled for RTL8822CS as either the recently submitted firmware update for this chip has fixed the performance issue or an update of my wifi AP firmware. Either way: there's only a 5% difference in RX throughput in my tests now - compared to 50% from before - fixed suspend/resume (tested on X96 Air with Amlogic SM1 SoC) - build fix to not break bisectability Changes since v1 at [0]: - removed patches 1-8 as they have been submitted and separately (they were indepdent and this helped cutting down the size of this series) - dropped patch "rtw88: ps: Increase LEAVE_LPS_TRY_CNT for SDIO based chipsets" as the underlying issue has been fixed - most likely with upstream commit 823092a53556eb ("wifi: rtw88: fix race condition when doing H2C command") - rework the code so we don't need a new HCI specific power_switch callback by utilizing the RTW_FLAG_POWERON flag which was recently introduced - various patches include the feedback from reviewers and build testing robots (see the individual patches for details) [0] https://lore.kernel.org/lkml/a2449a2d1e664bcc8962af4667aa1290@realtek.com/T/ [1] https://lore.kernel.org/linux-wireless/20230310202922.2459680-1-martin.blumenstingl@googlemail.com/ [2] https://lore.kernel.org/linux-wireless/20230320213508.2358213-1-martin.blumenstingl@googlemail.com/ Jernej Skrabec (1): wifi: rtw88: Add support for the SDIO based RTL8822BS chipset Martin Blumenstingl (8): wifi: rtw88: Clear RTW_FLAG_POWERON early in rtw_mac_power_switch() wifi: rtw88: sdio: Add HCI implementation for SDIO based chipsets wifi: rtw88: mac: Support SDIO specific bits in the power on sequence wifi: rtw88: main: Add the {cpwm,rpwm}_addr for SDIO based chipsets wifi: rtw88: main: Reserve 8 bytes of extra TX headroom for SDIO cards mmc: sdio: add Realtek SDIO vendor ID and various wifi device IDs wifi: rtw88: Add support for the SDIO based RTL8822CS chipset wifi: rtw88: Add support for the SDIO based RTL8821CS chipset drivers/net/wireless/realtek/rtw88/Kconfig | 36 + drivers/net/wireless/realtek/rtw88/Makefile | 12 + drivers/net/wireless/realtek/rtw88/debug.h | 1 + drivers/net/wireless/realtek/rtw88/mac.c | 53 +- drivers/net/wireless/realtek/rtw88/mac.h | 1 - drivers/net/wireless/realtek/rtw88/main.c | 9 +- drivers/net/wireless/realtek/rtw88/reg.h | 12 + .../net/wireless/realtek/rtw88/rtw8821cs.c | 36 + .../net/wireless/realtek/rtw88/rtw8822bs.c | 36 + .../net/wireless/realtek/rtw88/rtw8822cs.c | 36 + drivers/net/wireless/realtek/rtw88/sdio.c | 1387 +++++++++++++++++ drivers/net/wireless/realtek/rtw88/sdio.h | 178 +++ include/linux/mmc/sdio_ids.h | 9 + 13 files changed, 1797 insertions(+), 9 deletions(-) create mode 100644 drivers/net/wireless/realtek/rtw88/rtw8821cs.c create mode 100644 drivers/net/wireless/realtek/rtw88/rtw8822bs.c create mode 100644 drivers/net/wireless/realtek/rtw88/rtw8822cs.c create mode 100644 drivers/net/wireless/realtek/rtw88/sdio.c create mode 100644 drivers/net/wireless/realtek/rtw88/sdio.h