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2010-08-25T09:23:17
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/*
* ========== 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
* any nuclear facility.
*
* ========== 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);
}