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gse(7)									gse(7)

NAME    [Toc]    [Back]

     gse - Silicon Graphics 5080 workstation interface card

DESCRIPTION    [Toc]    [Back]

     The special file /dev/gse provides	access to the Silicon Graphics 5080
     workstation interface card, which connects	a Silicon Graphics 4D system
     to	a Channel Controller attached to an IBM	mainframe.  The	connection of
     the interface card	can be coaxial,	V.35, or T1.

     This special file is used by the IBM 5080 emulator	(em5080(1)).  The
     following control functions are provided by the driver to the emulator
     via ioctl(2).

	 #include <sys/gseio.h>
	 struct	gse_io gseio;

	 ioctl(fd,GIO_INIT,0);/* reset the controller */
	 ioctl(fd,GIO_SETIV,0);/* load the intr	vector */
	 ioctl(fd,GIO_WAIT,timeout);/* wait for	controller intr	*/
	 ioctl(fd,GIO_SIGNAL,signal);/*	send signal on controller intr */
	 ioctl(fd,GIO_READ,&gseio);/* cp from controller to user buf */
	 ioctl(fd,GIO_WRITE,&gseio);/* cp from user buf	to controller */

	 struct	gse_io {
	      int  v_addr; /* user virtual address */
	      int  d_addr; /* device real address */
	      int  byte_ct;/* byte count */

     Access to the board from the application level emulator is	also done
     through memory mapped addressing directly.	 The standard mmap(2) function
     is	provided by the	driver to set that up.

     The standard select(2) function is	also supported by the driver to
     facilitate	the operation on the controller	event from the emulator.

FILES    [Toc]    [Back]


SEE ALSO    [Toc]    [Back]

     cleanup(1), em3270(1), em5080(1), gateway(1), ld5080(1), sh5080(1).

									PPPPaaaaggggeeee 1111
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