path: root/usr/src/man/man9s/usba_hcdi_ops.9s

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.Dd Dec 20, 2016
.Dt USBA_HCDI_OPS 9S
.Os
.Sh NAME
.Nm usba_hcdi_ops ,
.Nm usba_hcdi_ops_t
.Nd USBA host controller driver operations vector
.Sh SYNOPSIS
.In sys/usb/usba/hcdi.h
.Sh INTERFACE LEVEL
.Sy Volatile -
illumos USB HCD private
.Pp
This is a private data structure that is not part of the stable DDI.
It may be removed or changed at any time.
.Sh DESCRIPTION
The
.Sy usba_hcdi_ops
structure is usbed HCD drivers to register operations vectors and
callbacks from the USBA HCD interface.
See
.Xr usba_hcdi 9E
for more information on USB HCD device drivers.
.Pp
The structure is allocated through a call to the
.Xr usba_alloc_hcdi_ops 9F
function and is used with a call to
.Xr usba_hcdi_register 9F .
When the driver is done with the operations vector, either because
registering has failed or it is unregistering, it should call
.Xr usba_free_hcdi_ops 9F
to free the associated memory.
.Sh STRUCTURE MEMBERS
The
.Sy usba_hcdi_ops
structure has the following members:
.Bd -literal -offset indent
int		usba_hcdi_ops_version;
dev_info_t	*usba_hcdi_dip;

int	(*usba_hcdi_pm_support)(dev_info_t *);
int	(*usba_hcdi_pipe_open)(usba_pipe_handle_data_t *, usb_flags_t);
int	(*usba_hcdi_pipe_close)(usba_pipe_handle_data_t *, usb_flags_t);
int	(*usba_hcdi_pipe_reset)(usba_pipe_handle_data_t *, usb_flags_t);
void	(*usba_hcdi_pipe_reset_data_toggle)(usba_pipe_handle_data_t *);

int	(*usba_hcdi_pipe_ctrl_xfer)(usba_pipe_handle_data_t *,
	    usb_ctrl_req_t *, usb_flags_t);

int	(*usba_hcdi_bulk_transfer_size)(usba_device_t *, size_t *);
int	(*usba_hcdi_pipe_bulk_xfer)(usba_pipe_handle_data_t *,
	    usb_bulk_req_t *, usb_flags_t);

int	(*usba_hcdi_pipe_intr_xfer)(usba_pipe_handle_data_t *,
	    usb_intr_req_t *, usb_flags_t);
int	(*usba_hcdi_pipe_stop_intr_polling)(usba_pipe_handle_data_t *,
	    usb_flags_t);

int	(*usba_hcdi_pipe_isoc_xfer)(usba_pipe_handle_data_t *,
	    usb_isoc_req_t *, usb_flags_t);
int	(*usba_hcdi_pipe_stop_isoc_polling)(usba_pipe_handle_data_t *,
	    usb_flags_t);
int	(*usba_hcdi_get_current_frame_number)(usba_device_t *,
	    usb_frame_number_t *);
int	(*usba_hcdi_get_max_isoc_pkts)(usba_device_t *, uint_t *);

int	(*usba_hcdi_console_input_init)(usba_pipe_handle_data_t *,
	    uchar_t **, usb_console_info_impl_t *);
int	(*usba_hcdi_console_input_fini)(usb_console_info_impl_t *);
int	(*usba_hcdi_console_input_enter)(usb_console_info_impl_t *);
int	(*usba_hcdi_console_read)(usb_console_info_impl_t *, uint_t);
int	(*usba_hcdi_console_input_exit)(usb_console_info_impl_t *);

int	(*usba_hcdi_console_output_init)(usba_pipe_handle_data_t *,
	    usb_console_info_impl_t *);
int	(*usba_hcdi_console_output_fini)(usb_console_info_impl_t *);
int	(*usba_hcdi_console_output_enter)(usb_console_info_impl_t *);
int	(*usba_hcdi_console_write)(usb_console_info_impl_t *, uchar_t *,
	    uint_t, uint_t *);
int	(*usba_hcdi_console_output_exit)(usb_console_info_impl_t *);

int	(*usba_hcdi_device_init)(usba_device_t *, usb_port_t, void **);
void	(*usba_hcdi_device_fini)(usba_device_t *, void *);
int	(*usba_hcdi_device_address)(usba_device_t *);

int	(*usba_hcdi_hub_update)(usba_device_t *, uint8_t, uint8_t);
.Ed
.Pp
The
.Sy usba_hcdi_ops_version
member is used to indicate the revision of the operations vector.
HCD drivers should generally set this to
.Dv HCDI_OPS_VERSION .
.Pp
The
.Sy usba_hcdi_dip
member should be set to the
.Sy dev_info_t
structure of the HCD driver that was received in
.Xr attach 9E .
.Pp
The
.Sy usba_hcdi_pm_support
member is vestigial.
If may be set to
.Dv NULL
or to a function which only returns
.Sy USB_FAILURE .
.Pp
The
.Sy usba_hcdi_pipe_open
member should be set to a function which takes care of the all of the
controller-specific actions of opening up an endpoint on a device and
associating it with the pipe.
See
.Xr usba_hcdi_pipe_open 9E
for more information.
.Pp
The
.Sy usba_hcdi_pipe_close
member should be set to a function which takes care of releasing all of
the controller-specific resources and actions taken when the pipe was
opened.
This function also has the responsibility to clean up any outstanding polling on
the endpoint.
See
.Xr usba_hcdi_pipe_close 9E
for more information.
.Pp
The
.Sy usba_hcdi_pipe_reset
member should be set to a function that takes care of resetting a pipe.
A pipe reset not only performs controller-specific functionality, but it
also cleans up any outstanding requests and terminates polling.
See
.Xr usba_hcdi_pipe_reset 9E
for more information.
.Pp
The
.Sy usba_hcdi_pipe_reset_data_toggle
member should be set to a function that takes care of the USB data
toggle, if the controller exposes this functionality to the host.
.Pp
The
.Sy usba_hcdi_pipe_ctrl_xfer
member should be set to a function that handles control transfers for any
device, including the root hub.
See
.Xr usba_hcdi_pipe_ctrl_xfer 9E
for more information.
.Pp
The
.Sy usba_hcdi_bulk_transfer_size
member should be a set to a function which can return the maximum amount
of data that can be performed in a given USB transfer for a bulk
transfer.
.Pp
The
.Sy usba_hcdi_pipe_bulk_xfer
member should be set set to a function which performs a bulk transfer.
See
.Xr usba_hcdi_pipe_bulk_xfer 9E
for more information.
.Pp
The
.Sy usba_hcdi_pipe_intr_xfer
member should be set to a function which performs interrupt transfers.
These may be both periodic and one-shot transfers.
In addition, this may need to handle requests for the root hub.
See
.Xr usba_hcdi_pipe_intr_xfer 9E
for more information.
.Pp
The
.Sy usba_hcdi_pipe_stop_intr_polling
member should be set to a function which is used to terminate interrupt
polling and return the original interrupt request.
See
.Xr usba_hcdi_pipe_stop_intr_polling 9E
for more information.
.Pp
The
.Sy usba_hcdi_pipe_isoc_xfer
member should be set to a function which performs isochronous transfers.
These may be both periodic and one-shot transfers.
See
.Xr usba_hcdi_pipe_isoc_xfer 9E
for more information.
.Pp
The
.Sy usba_hcdi_pipe_stop_isoc_polling
member should be set to a function which is used to terminate isochronous
polling and return the original isochronous request.
See
.Xr usba_hcdi_pipe_stop_isoc_polling 9E
for more information.
.Pp
The
.Sy usba_hcdi_get_current_frame_number
member should be set to a function which returns the current virtual
frame number.
While this entry point is required, at this time, nothing uses this
functionality in illumos, so having a dummy function which just returns
.Sy USB_FAILURE
is acceptable.
.Pp
The
.Sy usba_hcdi_max_isoc_pkts
member should be set to a function that returns the maximum number of
isochronous fragments that can be queued in a given transfer.
.Pp
The
.Sy usba_hcdi_console_input_init ,
.Sy usba_hcdi_console_input_fini ,
.Sy usba_hcdi_console_input_enter ,
.Sy usba_hcdi_console_read ,
and
.Sy usba_hcdi_console_input_exit
members are used to facilitate a USB device acting as the system console
and reading input from it.
Support for this is optional in an HCD driver.
HCD drivers which do not support this functionality should have functions which
return
.Sy USB_FAILURE .
.Pp
The
.Sy usba_hcdi_console_output_init ,
.Sy usba_hcdi_console_output_fini ,
.Sy usba_hcdi_console_output_enter ,
.Sy usba_hcdi_console_writ ,
and
.Sy usba_hcdi_console_output_exit
members are used to facilitate a USB device acting as the system console
and outputting data to it.
Support for this is optional in an HCD driver.
HCD drivers which do not support this functionality should have functions which
return
.Sy USB_FAILURE .
.Pp
The
.Sy usba_hcdi_device_init
member is an
.Em optional
entry point that will be called every time a new device is initialized
and detected by the system.
If an HCD does not need this functionality, the member should be set to
.Dv NULL .
See
.Xr usba_hcdi_device_init 9E
for more information.
.Pp
The
.Sy usba_hcdi_device_fini
member is an
.Em optional
entry point that will be called every time a device is removed from the
system, whether through it being unplugged or a
.Xr cfgadm 8
action.
If an HCD does not need this functionality, the member should be set to
.Dv NULL .
See
.Xr usba_hcdi_device_fini 9E
for more information.
.Pp
The
.Sy usba_hcdi_device_address
member is an
.Em optional
entry point that will be called every time a USB device needs to be
addressed.
If an HCD driver does not need this functionality, the member should be set to
.Dv NULL .
See
.Xr usba_hcdi_device_address 9E
for more information.
.Pp
The
.Sy usba_hcdi_hub_update
member is an
.Em optional
entry point that will be called every time a device descriptor is read
that turns out to be a hub.
This gives HCD drivers a chance to perform any needed controller-specific
functionality before the device is used.
If an HCD driver does not need this functionality, the member should be set to
.Dv NULL .
See
.Xr usba_hcdi_hub_update 9E
for more information.
.Sh SEE ALSO
.Xr cfgadm 8 ,
.Xr attach 9E ,
.Xr usba_hcdi 9E ,
.Xr usba_hcdi_device_address 9E ,
.Xr usba_hcdi_device_fini 9E ,
.Xr usba_hcdi_device_init 9E ,
.Xr usba_hcdi_hub_update 9E ,
.Xr usba_hcdi_pipe_bulk_xfer 9E ,
.Xr usba_hcdi_pipe_close 9E ,
.Xr usba_hcdi_pipe_ctrl_xfer 9E ,
.Xr usba_hcdi_pipe_intr_xfer 9E ,
.Xr usba_hcdi_pipe_isoc_xfer 9E ,
.Xr usba_hcdi_pipe_open 9E ,
.Xr usba_hcdi_pipe_reset 9E ,
.Xr usba_hcdi_pipe_stop_intr_polling 9E ,
.Xr usba_hcdi_pipe_stop_isoc_polling 9E ,
.Xr usba_alloc_hcdi_ops 9F ,
.Xr usba_free_hcdi_ops 9F ,
.Xr usba_hcdi_register 9F