obp/tools/promif/common/prom_ioctl.c

/*
* ========== Copyright Header Begin ==========================================
*
* Hypervisor Software File: prom_ioctl.c
*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
*
*  - Do no alter or remove copyright notices
*
*  - Redistribution and use of this software in source and binary forms, with
*    or without modification, are permitted provided that the following
*    conditions are met:
*
*  - Redistribution of source code must retain the above copyright notice,
*    this list of conditions and the following disclaimer.
*
*  - Redistribution in binary form must reproduce the above copyright notice,
*    this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
*    Neither the name of Sun Microsystems, Inc. or the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
*     This software is provided "AS IS," without a warranty of any kind.
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN
* OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
* FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or
* intended for use in the design, construction, operation or maintenance of
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*
* ========== Copyright Header End ============================================
*/
/*
 * Copyright (c) 2001-2003 Sun Microsystems, Inc.
 * All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "@(#)prom_ioctl.c       1.1     01/04/19 SMI"

#include <sys/promif.h>
#include <sys/promimpl.h>
#include <sys/openpromio.h>
#include <sys/mman.h>

static phandle_t oprom_dev_phandle;
static phandle_t flash_dev_phandle;
typedef struct openpromio openpromio_t;

int32_t
ioctl(int32_t fildes, int32_t request, void *arg)
{
        phandle_t flash_phandle;
        phandle_t opt_phandle;

        /*
         * Currently only supports /dev/openprom and /dev/flashprom
         */
        if (fildes == NULL) {
                prom_printf("Null file descriptor\n");
                return (-1);
        } else if (fildes == OPENPROM_FD) {

        openpromio_t *op_struct = (openpromio_t *)arg;

        switch (request) {
        case OPROMGETOPT:
                opt_phandle = prom_finddevice("/options");
                op_struct->oprom_size = prom_getprop(opt_phandle,
                    op_struct->opio_u.b, op_struct->opio_u.b);
                break;

        case OPROMGETPROP:
                op_struct->oprom_size = prom_getprop(oprom_dev_phandle,
                    op_struct->opio_u.b, op_struct->opio_u.b);
                break;

        case OPROMNXTOPT:
                opt_phandle = prom_finddevice("/options");
                op_struct->oprom_size = prom_nextprop(opt_phandle,
                    op_struct->opio_u.b, op_struct->opio_u.b);
                break;

        case OPROMNXTPROP:
                op_struct->oprom_size = prom_nextprop(oprom_dev_phandle,
                    op_struct->opio_u.b, op_struct->opio_u.b);
                break;

        case OPROMGETPROPLEN:
                op_struct->opio_u.i = prom_getproplen(oprom_dev_phandle,
                    op_struct->opio_u.b);
                break;

        case OPROMCHILD:
                op_struct->opio_u.i = prom_childnode(op_struct->opio_u.i);
                oprom_dev_phandle = op_struct->opio_u.i;
                break;

        case OPROMNEXT:
                op_struct->opio_u.i = prom_nextnode(op_struct->opio_u.i);
                oprom_dev_phandle = op_struct->opio_u.i;
                break;

        case OPROMGETVERSION:
                flash_phandle = prom_finddevice("/flashprom");
                op_struct->oprom_size = prom_getprop(flash_phandle, "version",
                    op_struct->opio_u.b);
                break;

        default:
                printf("Unrecognized stream request %u\n", request);
                return (-1);

        } } else if (fildes == FLASHPROM_FD) {  /* OPENPROM_FD and switch */

        int32_t protection;
        uchar_t *gpio_va;

        switch (request) {
        case _PGI:
                protection = (PROT_READ | PROT_WRITE);
                gpio_va = (uchar_t *)mmap((caddr_t)0, 1,
                    protection, MAP_SHARED, fildes, (1<< 28));
                if (gpio_va == MAP_FAILED) {
                        printf("ERROR: Unable to map in flashprom gpio\n");
                        return (-1);
                }
                *gpio_va = *(uchar_t *)arg;
                break;

        case _PGO:
                protection = PROT_READ;
                gpio_va = (uchar_t *)mmap((caddr_t)0, 1,
                    protection, MAP_SHARED, fildes, (1<< 28));
                if (gpio_va == MAP_FAILED) {
                        printf("ERROR: Unable to map in flashprom gpio\n");
                        return (-1);
                }
                *(uchar_t *)arg = *gpio_va;
                break;

        default:
                printf("Unrecognized stream request %u\n", request);
                return (-1);

        } } else {                              /* FLASHPROM_FD and switch */
                prom_printf("Unknown file stream type\n");
                return (-1);
        }

        return (0);

}