> -----Original Message----- > From: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> > Sent: Thursday, April 6, 2023 4:07 AM > To: linux-wireless@xxxxxxxxxxxxxxx > Cc: Yan-Hsuan Chuang <tony0620emma@xxxxxxxxx>; Kalle Valo <kvalo@xxxxxxxxxx>; Ulf Hansson > <ulf.hansson@xxxxxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; > linux-mmc@xxxxxxxxxxxxxxx; Chris Morgan <macromorgan@xxxxxxxxxxx>; Nitin Gupta <nitin.gupta981@xxxxxxxxx>; > Neo Jou <neojou@xxxxxxxxx>; Ping-Ke Shih <pkshih@xxxxxxxxxxx>; Jernej Skrabec <jernej.skrabec@xxxxxxxxx>; > Larry Finger <Larry.Finger@xxxxxxxxxxxx>; Pali Rohár <pali@xxxxxxxxxx>; Simon Horman > <simon.horman@xxxxxxxxxxxx>; Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> > Subject: [PATCH v5 2/9] wifi: rtw88: sdio: Add HCI implementation for SDIO based chipsets > > Add a sub-driver for SDIO based chipsets which implements the following > functionality: > - register accessors for 8, 16 and 32 bits for all states of the card > (including usage of 4x 8 bit access for one 32 bit buffer if the card > is not fully powered on yet - or if it's fully powered on then 1x 32 > bit access is used) > - checking whether there's space in the TX FIFO queue to transmit data > - transfers from the host to the device for actual network traffic, > reserved pages (for firmware download) and H2C (host-to-card) > transfers > - receiving data from the device > - deep power saving state > > The transmit path is optimized so DMA-capable SDIO host controllers can > directly use the buffers provided because the buffer's physical > addresses are 8 byte aligned. > > The receive path is prepared to support RX aggregation where the > chipset combines multiple MAC frames into one bigger buffer to reduce > SDIO transfer overhead. > > Co-developed-by: Jernej Skrabec <jernej.skrabec@xxxxxxxxx> > Signed-off-by: Jernej Skrabec <jernej.skrabec@xxxxxxxxx> > Reviewed-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> > Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> Reviewed-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
