have to include proc.h before socketvar.h

[unix-history] / usr / src / sys / hp300 / dev / grf_rb.c

/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* %sccs.include.redist.c%
*
* from: Utah $Hdr: grf_rb.c 1.13 91/04/02$
*
*      @(#)grf_rb.c    7.5 (Berkeley) %G%
*/

#include "grf.h"
#if NGRF > 0

/*
* Graphics routines for the Renaissance, HP98720 Graphics system.
*/
#include "sys/param.h"
#include "sys/errno.h"

#include "grfioctl.h"
#include "grfvar.h"
#include "grf_rbreg.h"

#include "../include/cpu.h"

/*
* Initialize hardware.
* Must point g_display at a grfinfo structure describing the hardware.
* Returns 0 if hardware not present, non-zero ow.
*/
rb_init(gp, addr)
       struct grf_softc *gp;
       caddr_t addr;
{
       register struct rboxfb *rbp;
       struct grfinfo *gi = &gp->g_display;
       int fboff;
       extern caddr_t sctopa(), iomap();

       rbp = (struct rboxfb *) addr;
       if (ISIIOVA(addr))
               gi->gd_regaddr = (caddr_t) IIOP(addr);
       else
               gi->gd_regaddr = sctopa(vatosc(addr));
       gi->gd_regsize = 0x20000;
       gi->gd_fbwidth = (rbp->fbwmsb << 8) | rbp->fbwlsb;
       gi->gd_fbheight = (rbp->fbhmsb << 8) | rbp->fbhlsb;
       gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight;
       fboff = (rbp->fbomsb << 8) | rbp->fbolsb;
       gi->gd_fbaddr = (caddr_t) (*((u_char *)addr + fboff) << 16);
       if (gi->gd_regaddr >= (caddr_t)DIOIIBASE) {
               /*
                * For DIO II space the fbaddr just computed is the offset
                * from the select code base (regaddr) of the framebuffer.
                * Hence it is also implicitly the size of the register set.
                */
               gi->gd_regsize = (int) gi->gd_fbaddr;
               gi->gd_fbaddr += (int) gi->gd_regaddr;
               gp->g_regkva = addr;
               gp->g_fbkva = addr + gi->gd_regsize;
       } else {
               /*
                * For DIO space we need to map the seperate framebuffer.
                */
               gp->g_regkva = addr;
               gp->g_fbkva = iomap(gi->gd_fbaddr, gi->gd_fbsize);
       }
       gi->gd_dwidth = (rbp->dwmsb << 8) | rbp->dwlsb;
       gi->gd_dheight = (rbp->dwmsb << 8) | rbp->dwlsb;
       gi->gd_planes = 0;      /* ?? */
       gi->gd_colors = 256;
       return(1);
}

/*
* Change the mode of the display.
* Right now all we can do is grfon/grfoff.
* Return a UNIX error number or 0 for success.
*/
rb_mode(gp, cmd)
       register struct grf_softc *gp;
{
       register struct rboxfb *rbp;
       int error = 0;

       rbp = (struct rboxfb *) gp->g_regkva;
       switch (cmd) {
       /*
        * The minimal register info here is from the Renaissance X driver.
        */
       case GM_GRFON:
       case GM_GRFOFF:
               break;
       case GM_GRFOVON:
               rbp->write_enable = 0;
               rbp->opwen = 0xF;
               rbp->drive = 0x10;
               break;
       case GM_GRFOVOFF:
               rbp->opwen = 0;
               rbp->write_enable = 0xffffffff;
               rbp->drive = 0x01;
               break;
       default:
               error = EINVAL;
               break;
       }
       return(error);
}

#endif