have to include proc.h before socketvar.h

[unix-history] / usr / src / sys / hp300 / dev / grf_tc.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 $Hdr: grf_tc.c 1.18 91/04/02$
*
*      @(#)grf_tc.c    7.4 (Berkeley) %G%
*/

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

/*
* Graphics routines for TOPCAT frame buffer
*/
#include "sys/param.h"
#include "sys/errno.h"

#include "grfioctl.h"
#include "grfvar.h"
#include "grf_tcreg.h"

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

/*
* Initialize hardware.
* Must fill in the grfinfo structure in g_softc.
* Returns 0 if hardware not present, non-zero ow.
*/
tc_init(gp, addr)
       struct grf_softc *gp;
       caddr_t addr;
{
       register struct tcboxfb *tp = (struct tcboxfb *) addr;
       struct grfinfo *gi = &gp->g_display;
       volatile u_char *fbp;
       u_char save;
       int fboff;
       extern caddr_t sctopa(), iomap();

       if (ISIIOVA(addr))
               gi->gd_regaddr = (caddr_t) IIOP(addr);
       else
               gi->gd_regaddr = sctopa(vatosc(addr));
       gi->gd_regsize = 0x10000;
       gi->gd_fbwidth = (tp->fbwmsb << 8) | tp->fbwlsb;
       gi->gd_fbheight = (tp->fbhmsb << 8) | tp->fbhlsb;
       gi->gd_fbsize = gi->gd_fbwidth * gi->gd_fbheight;
       fboff = (tp->fbomsb << 8) | tp->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 = (tp->dwmsb << 8) | tp->dwlsb;
       gi->gd_dheight = (tp->dhmsb << 8) | tp->dhlsb;
       gi->gd_planes = tp->num_planes;
       gi->gd_colors = 1 << gi->gd_planes;
       if (gi->gd_colors == 1) {
               fbp = (u_char *) gp->g_fbkva;
               tp->wen = ~0;
               tp->prr = 0x3;
               tp->fben = ~0;
               save = *fbp;
               *fbp = 0xFF;
               gi->gd_colors = *fbp + 1;
               *fbp = save;
       }
       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.
* Function may not be needed anymore.
*/
/*ARGSUSED*/
tc_mode(gp, cmd)
       struct grf_softc *gp;
{
       int error = 0;

       switch (cmd) {
       case GM_GRFON:
       case GM_GRFOFF:
               break;
       default:
               error = EINVAL;
               break;
       }
       return(error);
}
#endif