video(D3oddi)

Synopsis

#include <sys/vid.h>

int DISPLAYED(struct mscrn msp);

void viddoio(struct mscrn msp, struct port_io_arg arg,
           struct portrange portlist);

void vidinitscreen(struct mscrn msp);

faddr_t vidmap(paddr_t address, unsigned long nbytes);

int vidresscreen(struct mscrn msp);

int vidsavscreen(struct mscrn msp);

faddr_t vidumapinit(int base, int size);

void vidunmap(faddr_t address, int nbytes);

Description

DISPLAYED

macro that determines if the screen is displayed.

viddoio

support I/O control commands for the adapter driver.

vidinitscreen

initialize a multiscreen.

vidmap

return a kernel data pointer to the virtual memory bound to the specified physical memory range. Unlike memget(D3oddi), no physical memory is added to the kernel address space; vidmap simply translates a physical address to a virtual address.

vidresscreen

call the specified adapter driver to restore the screen.

vidsavscreen

call the specified adapter driver to save the screen.

vidumapinit

return a kernel data pointer to the virtual memory bound to the specified physical memory range.

vidunmap

unbind the specified virtual memory range from physical memory. This function is the reverse of vidumapinit.

Arguments

msp

pointer to an instance of the multiscreen mscrn structure.

arg

pointer to an instance of the port_io_arg structure.

portlist

list of I/O ports, terminated with the portrange count member set to 0 (zero).

address

Beginning of the virtual memory range.

nbytes

Number of bytes in the virtual memory range.

base

Physical memory address of the memory range to which the virtual memory range is bound.

size

Number of bites of the physical memory range.

address

Beginning of the virtual memory range.

Return values

viddoio, vidinitscreen and vidunmap do not return a value.

vidmap returns a virtual address.

vidresscreen returns TRUE if the screen is restored; otherwise it returns FALSE.

vidsavscreen returns TRUE if the screen is saved; otherwise it returns FALSE.

vidumapinit returns a kernel data pointer to virtual memory if successful; otherwise it returns -1.

Hardware applicability

Version applicability

Differences between versions

SVR5 DDI compatibility

References