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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright (c) 2007 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
*
*/
#include "xg_private.h"
#include "xc_core.h"
static int nr_gpfns(int xc_handle, domid_t domid)
{
return xc_memory_op(xc_handle, XENMEM_maximum_gpfn, &domid) + 1;
}
int
xc_core_arch_auto_translated_physmap(const xc_dominfo_t *info)
{
return info->hvm;
}
int
xc_core_arch_memory_map_get(int xc_handle, struct xc_core_arch_context *unused,
xc_dominfo_t *info, shared_info_t *live_shinfo,
xc_core_memory_map_t **mapp,
unsigned int *nr_entries)
{
unsigned long p2m_size = nr_gpfns(xc_handle, info->domid);
xc_core_memory_map_t *map;
map = malloc(sizeof(*map));
if ( map == NULL )
{
PERROR("Could not allocate memory");
return -1;
}
map->addr = 0;
map->size = ((uint64_t)p2m_size) << PAGE_SHIFT;
*mapp = map;
*nr_entries = 1;
return 0;
}
int
xc_core_arch_map_p2m(int xc_handle, xc_dominfo_t *info,
shared_info_t *live_shinfo, xen_pfn_t **live_p2m,
unsigned long *pfnp)
{
/* Double and single indirect references to the live P2M table */
xen_pfn_t *live_p2m_frame_list_list = NULL;
xen_pfn_t *live_p2m_frame_list = NULL;
uint32_t dom = info->domid;
unsigned long p2m_size = nr_gpfns(xc_handle, info->domid);
int ret = -1;
int err;
if ( p2m_size < info->nr_pages )
{
ERROR("p2m_size < nr_pages -1 (%lx < %lx", p2m_size, info->nr_pages - 1);
goto out;
}
live_p2m_frame_list_list =
xc_map_foreign_range(xc_handle, dom, PAGE_SIZE, PROT_READ,
live_shinfo->arch.pfn_to_mfn_frame_list_list);
if ( !live_p2m_frame_list_list )
{
PERROR("Couldn't map p2m_frame_list_list (errno %d)", errno);
goto out;
}
live_p2m_frame_list =
xc_map_foreign_batch(xc_handle, dom, PROT_READ,
live_p2m_frame_list_list,
P2M_FLL_ENTRIES);
if ( !live_p2m_frame_list )
{
PERROR("Couldn't map p2m_frame_list");
goto out;
}
*live_p2m = xc_map_foreign_batch(xc_handle, dom, PROT_READ,
live_p2m_frame_list,
P2M_FL_ENTRIES);
if ( !*live_p2m )
{
PERROR("Couldn't map p2m table");
goto out;
}
*pfnp = p2m_size;
ret = 0;
out:
err = errno;
if ( live_p2m_frame_list_list )
munmap(live_p2m_frame_list_list, PAGE_SIZE);
if ( live_p2m_frame_list )
munmap(live_p2m_frame_list, P2M_FLL_ENTRIES * PAGE_SIZE);
errno = err;
return ret;
}
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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