Re: nick-nhusb merge coming soon

[Nick Hudson <skrll%netbsd.org@localhost>]

On 04/13/16 08:05, Taylor R Campbell wrote:
>     Date: Wed, 13 Apr 2016 07:59:20 +0100
>     From: Nick Hudson <skrll%netbsd.org@localhost>
>
>     I think the first phase of nick-nhusb is in a state ready to be
>     merged. I'd like to merge it in the next few days, but in the meantime
>     I've put some kernels for testing here:
>
>          http://www.netbsd.org/~skrll/nick-nhusb
>
> Cool!
>
> Can you write a brief summary of what changed in the USB driver API?

The main change is to replace

   void *usbd_alloc_buffer(struct usbd_xfer *, u_int32_t);
   void usbd_free_buffer(struct usbd_xfer *);

   struct usbd_xfer *usbd_alloc_xfer(struct usbd_device *dev);
   usbd_status usbd_free_xfer(struct usbd_xfer *xfer);

with

   int usbd_create_xfer(struct usbd_pipe *pipe, size_t len, unsigned 
int flags,
      unsigned int nframes, struct usbd_xfer **xp)

    void usbd_destroy_xfer(struct usbd_xfer *xfer)

and the pipe argument is dropped from the usbd_setup_* functions

The idea being that transfers are linked to the pipe/endpoint when 
created and the
HCD can, if required, allocate all resources for the transfer before 
being started.

> Have any man pages been updated in your branch?
I have local changes I'll commit at merge time.

Nick