On 2020/10/29 4:10, Paolo Bonzini wrote:
On 27/10/20 07:00, Jie Deng wrote:+The driver queues requests to the virtqueue, and they are used by the +device. The request is the representation of one segment of an I2C +transaction. Each request is of form: + +\begin{lstlisting} +struct virtio_i2c_req { + le16 addr; + le16 flags; + le16 len; + u8 buf[]; + u8 status; +}; +\end{lstlisting}Hi, one extremely common two-segment I2C transaction is not reproducible with virtio-i2c. This is when a write is followed by a read: the master starts off the transmission with a write, then sends a second START, then continues with a read from the same address. Would it make sense to define the request like struct virtio_i2c_req { le16 addr; le16 written; le16 read; u8 bufwrite[]; u8 status; u8 bufread[]; }; instead? Thanks, Paolo
Hi, Do you have any comments on Paolo's proposal ? Thanks. --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
