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Konrad Rzeszutek Wilk
479dab8498
The users of these (qemu) check for a negative value so we are safe in regards to that. However they also use the return value to inform the user of the error. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Ian Campbell <ian.campbell@citrix.com>
115 lines
3.0 KiB
C
115 lines
3.0 KiB
C
/******************************************************************************
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* xc_physdev.c
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*
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* API for manipulating physical-device access permissions.
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*
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* Copyright (c) 2004, Rolf Neugebauer (Intel Research Cambridge)
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* Copyright (c) 2004, K A Fraser (University of Cambridge)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xc_private.h"
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int xc_physdev_pci_access_modify(xc_interface *xch,
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uint32_t domid,
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int bus,
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int dev,
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int func,
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int enable)
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{
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errno = ENOSYS;
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return -1;
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}
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int xc_physdev_map_pirq(xc_interface *xch,
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int domid,
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int index,
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int *pirq)
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{
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int rc;
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struct physdev_map_pirq map;
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if ( !pirq )
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{
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errno = EINVAL;
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return -1;
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}
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memset(&map, 0, sizeof(struct physdev_map_pirq));
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map.domid = domid;
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map.type = MAP_PIRQ_TYPE_GSI;
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map.index = index;
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map.pirq = *pirq < 0 ? index : *pirq;
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rc = do_physdev_op(xch, PHYSDEVOP_map_pirq, &map, sizeof(map));
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if ( !rc )
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*pirq = map.pirq;
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return rc;
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}
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int xc_physdev_map_pirq_msi(xc_interface *xch,
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int domid,
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int index,
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int *pirq,
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int devfn,
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int bus,
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int entry_nr,
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uint64_t table_base)
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{
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int rc;
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struct physdev_map_pirq map;
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if ( !pirq )
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{
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errno = EINVAL;
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return -1;
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}
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memset(&map, 0, sizeof(struct physdev_map_pirq));
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map.domid = domid;
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map.type = MAP_PIRQ_TYPE_MSI;
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map.index = index;
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map.pirq = *pirq;
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map.bus = bus;
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map.devfn = devfn;
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map.entry_nr = entry_nr;
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map.table_base = table_base;
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rc = do_physdev_op(xch, PHYSDEVOP_map_pirq, &map, sizeof(map));
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if ( !rc )
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*pirq = map.pirq;
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return rc;
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}
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int xc_physdev_unmap_pirq(xc_interface *xch,
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int domid,
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int pirq)
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{
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int rc;
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struct physdev_unmap_pirq unmap;
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memset(&unmap, 0, sizeof(struct physdev_unmap_pirq));
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unmap.domid = domid;
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unmap.pirq = pirq;
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rc = do_physdev_op(xch, PHYSDEVOP_unmap_pirq, &unmap, sizeof(unmap));
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return rc;
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}
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