usr/src/new/X/libvs100/report.c

/* $Header: report.c,v 10.3 86/02/01 15:47:36 tony Rel $ */
/* report.c     routine to do a ReportStatus call to the vs
 *
 *      ReportStatus    Get information about the workstation
 *
 */

/****************************************************************************
 *                                                                          *
 *  Copyright (c) 1983, 1984 by                                             *
 *  DIGITAL EQUIPMENT CORPORATION, Maynard, Massachusetts.                  *
 *  All rights reserved.                                                    *
 *                                                                          *
 *  This software is furnished on an as-is basis and may be used and copied *
 *  only with inclusion of the above copyright notice. This software or any *
 *  other copies thereof may be provided or otherwise made available to     *
 *  others only for non-commercial purposes.  No title to or ownership of   *
 *  the software is hereby transferred.                                     *
 *                                                                          *
 *  The information in this software is  subject to change without notice   *
 *  and  should  not  be  construed as  a commitment by DIGITAL EQUIPMENT   *
 *  CORPORATION.                                                            *
 *                                                                          *
 *  DIGITAL assumes no responsibility for the use  or  reliability of its   *
 *  software on equipment which is not supplied by DIGITAL.                 *
 *                                                                          *
 *                                                                          *
 ****************************************************************************/

#include "vs100.h"

char *AllocateSpace();

/* Issue a report status.  This returns the device type and version (usually
 * useless), the microcode version (also useless), a bitmap describing the
 * frame buffer (very useful), a description of framebuffer memory
 * that isn't mapped to the screen, a description of the program memory
 * not used by the firmware (useful for caching data in the workstation),
 * and a description of where to map the host Vax's memory (useful to the
 * driver but not to anyone else).  There are two versions; if rom is
 * 1 the rom version is used; this only works before the firmware is started
 * up.  Any of the pointers may be NULL if the appropriate information
 * isn't required.
 */

ReportStatus (devType, devVersion, ucodeVersion, framebuffer,
                freeFramebuffer, freeProgram, hostMem, rom)
        int *devType, rom;
        short *devVersion, *ucodeVersion;
        BitMap *framebuffer;
        MemArea *freeFramebuffer, *freeProgram, *hostMem;
{
        register ReportStatusPacket *rsp;
#define h ((PacketHeader *) rsp->rsp_head)

        rsp = (ReportStatusPacket *) AllocateSpace (sizeof (ReportStatusPacket));
        if (rsp == NULL) return (-1);

        /* Format the packet */

        h->ph_modifier.emptymod = 0;
        h->ph_opcode = (rom ? REPORT_STATUS_ROM : REPORT_STATUS);
        *(long *) h->ph_next = NULL;

        /* And send it off */

        if (WritePacket ((caddr_t) rsp) || SynchWrites()) return (-1);

        if (devType) *devType = *(long *) rsp->rsp_deviceType;
        if (devVersion) *devVersion = rsp->rsp_deviceVersion;
        if (ucodeVersion) *ucodeVersion = rsp->rsp_ucodeVersion;
        if (framebuffer)
                *framebuffer = *(BitMap *) rsp->rsp_visibleFramebuffer;
        if (freeFramebuffer)
                *freeFramebuffer = *(MemArea *) rsp->rsp_freeFramebuffer;
        if (freeProgram)
                *freeProgram = *(MemArea *) rsp->rsp_freeProgramMemory;
        if (hostMem)
                *hostMem = *(MemArea *) rsp->rsp_hostMemory;

        return (0);
}