usbms(7M) STREAMS Modules usbms(7M)NAMEusbms - USB mouse STREAMS module
SYNOPSIS
#include <sys/vuid_event.h>
#include <sys/vuid_wheel.h>
#include <sys/msio.h>
#include <sys/msreg.h>
DESCRIPTION
The usbms STREAMS module processes byte streams generated by a USB
mouse. A USB mouse is a member of the Human Interface Device (HID)
class and the usbms module supports only the mouse boot protocol
defined in the HID specification.
The usbms module must be pushed on top of the HID class driver (see
hid(7D)). In the VUID_FIRM_EVENT mode, the usbms module translates
packets from the USB mouse into Firm events. The Firm event structure
is defined in <sys/vuid_event.h>. The STREAMS module state is ini‐
tially set to raw or VUID_NATIVE mode which performs no message pro‐
cessing. See the HID 1.0 specification for the raw format of the mouse
packets. To initiate mouse protocol conversion to Firm events, change
the state to
VUID_FIRM_EVENT.
When the usb mouse is opened or hot plugged in, the MOUSE_TYPE_ABSOLUTE
event (Firm event) is sent to the upper level to notify the VUID appli‐
cation that it is the absolute mouse.
IOCTLS
VUIDGFORMAT This option returns the current state of the STREAMS
module. The state of the usbms STREAMS module may be
either VUID_NATIVE (no message processing) or
VUID_FIRM_EVENT (convert to Firm events).
VUIDSFORMAT The argument is a pointer to an int. Set the state of
the STREAMS module to the int pointed to by the argu‐
ment.
typedef struct vuid_addr_probe {
short base; /* default vuid device addr directed too */
union {
short next; /* next addr for default when VUIDSADDR */
short current; /* current addr of default when VUIDGADDR */
} data;
} Vuid_addr_probe;
VUIDSADDR The argument is a pointer to a Vuid_addr_probe struc‐
ture. VUIDSADDR sets the virtual input device segment
address indicated by base to next.
If base does not equal VKEY_FIRST, ENODEV is returned.
VUIDGADDR The argument is a pointer to a Vuid_addr_probe struc‐
ture. Return the address of the virtual input device
segment indicated by base to current.
If base does not equal VKEY_FIRST, ENODEV is returned.
VUIDGWHEELCOUNT
This ioctl takes a pointer to an integer as argument and sets the
value of the integer to the number of wheels available on this
device. This ioctl returns 1 if wheel(s) are present and zero if no
wheels are present.
VUIDGWHEELINFO
This command returns static information about the wheel that does
not change while a device is in use. Currently the only informa‐
tion defined is the wheel orientation which is either
VUID_WHEEL_FORMAT_VERTICAL or VUID_WHEEL_FORMAT_HORIZONTAL. If the
module cannot distinguish the orientation of the wheel or the wheel
is of some other format, the format is set to VUID_WHEEL_FOR‐
MAT_UNKNOWN.
typedef struct {
int vers;
int id;
int format;
} wheel_info;
The ioctl takes a pointer to "wheel_info" structure with the
"vers" set to the current version of the "wheel_info" structure and
"id" set to the id of the wheel for which the information is
desired.
VUIDSWHEELSTATE/VUIDGWHEELSTATE
VUIDSWHEELSTATE sets the state of the wheel to that specified in
the stateflags. VUIDGWHEELSTATE returns the current state settings
in the stateflags field.
stateflags is an OR'ed set of flag bits. The only flag cur‐
rently defined is VUID_WHEEL_STATE_ENABLED.
When stateflags is set to VUID_WHEEL_STATE_ENABLED the module con‐
verts motion of the specified wheel into VUID events and sends
those up stream.
Wheel events are enabled by default.
Applications that want to change the stateflags should first get
the current stateflags and then change only the bit they want.
typedef struct {
int vers;
int id;
uint32_t stateflags;
} wheel_state;
These ioctls take a pointer to "wheel_state" as an argument with
the "vers" and "id" members filled in. These members have the same
meaning as that for 'VUIDGWHEEL INFO' ioctl.
ioctl() requests for changing and retrieving mouse parameters use the
Ms_parms structure:
typedef struct {
int jitter_thresh;
int speed_law;
int speed_limit;
} Ms_parms;
jitter_thresh is the "jitter threshold" of the mouse. Motions fewer
than jitter_thresh units along both axes are accumulated and then sent
up the stream after 1/12 second.
speed_law indicates whether extremely large motions are to be ignored.
If it is 1, a "speed limit" is applied to mouse motions. Motions along
either axis of more than speed_limit units are discarded.
MSIOGETPARMS The argument is a pointer to a Ms_params structure. The
usbms module parameters are returned in the structure.
MSIOSETPARMS The argument is a pointer to a Ms_params structure. The
usbms module parameters are set according to the values
in the structure.
MSIOSRESOLUTION Used by the absolute mouse to get the current screen
resolution. The parameter is a pointer to the
Ms_screen_resolution structure:
int height; /* height of the screen */
int width; /* width of the screen */
}Ms_screen_resolution;
The usbms module parameters are set according to the
values in the structure and used to calculate the cor‐
rect coordinates.
FILES
/kernel/strmod/usbms
32-bit ELF kernel STREAMS module (x86 platform only.)
/kernel/strmod/sparcv9/usbms
SPARC 64-bit ELF kernel STREAMS module
ATTRIBUTES
See attributes(5) for a description of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Architecture │PCI-based systems │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWusb │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOioctl(2), attributes(5), hid(7D), virtualkm(7D), usba(7D)
System Administration Guide: Basic Administration
http://www/sun.com/io
DIAGNOSTICS
The following messages may be logged into the system log. They are for‐
matted in the following manner:
<device path><usbms<instance number>): message...
Invalid Hid descriptor tree. Set to default value (3 buttons).
The mouse supplied incorrect information in its HID report.
Mouse buffer flushed when overrun.
Mouse data was lost.
SunOS 5.10 1 Dec 2005 usbms(7M)
