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0814867e269e797e1c69f3fc7635a6749d3873ba
xen/tools/libxc/xc_domain.c
T
kaf24@firebug.cl.cam.ac.uk a582b2638b New memory_op subcall XENMEM_translate_gpfn_list. 
Allows translation from GPFNs to MFNs for an auto-translated
guest.

Signed-off-by: Keir Fraser <keir@xensource.com>
2006-02-16 18:52:06 +01:00

495 lines
14 KiB
C
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/******************************************************************************
* xc_domain.c
*
* API for manipulating and obtaining information on domains.
*
* Copyright (c) 2003, K A Fraser.
*/
#include "xc_private.h"
#include <xen/memory.h>
int xc_domain_create(int xc_handle,
uint32_t ssidref,
xen_domain_handle_t handle,
uint32_t *pdomid)
{
int err;
DECLARE_DOM0_OP;
op.cmd = DOM0_CREATEDOMAIN;
op.u.createdomain.domain = (domid_t)*pdomid;
op.u.createdomain.ssidref = ssidref;
memcpy(op.u.createdomain.handle, handle, sizeof(xen_domain_handle_t));
if ( (err = do_dom0_op(xc_handle, &op)) != 0 )
return err;
*pdomid = (uint16_t)op.u.createdomain.domain;
return 0;
}
int xc_domain_pause(int xc_handle,
uint32_t domid)
{
DECLARE_DOM0_OP;
op.cmd = DOM0_PAUSEDOMAIN;
op.u.pausedomain.domain = (domid_t)domid;
return do_dom0_op(xc_handle, &op);
}
int xc_domain_unpause(int xc_handle,
uint32_t domid)
{
DECLARE_DOM0_OP;
op.cmd = DOM0_UNPAUSEDOMAIN;
op.u.unpausedomain.domain = (domid_t)domid;
return do_dom0_op(xc_handle, &op);
}
int xc_domain_destroy(int xc_handle,
uint32_t domid)
{
DECLARE_DOM0_OP;
op.cmd = DOM0_DESTROYDOMAIN;
op.u.destroydomain.domain = (domid_t)domid;
return do_dom0_op(xc_handle, &op);
}
int xc_vcpu_setaffinity(int xc_handle,
uint32_t domid,
int vcpu,
cpumap_t cpumap)
{
DECLARE_DOM0_OP;
op.cmd = DOM0_SETVCPUAFFINITY;
op.u.setvcpuaffinity.domain = (domid_t)domid;
op.u.setvcpuaffinity.vcpu = vcpu;
op.u.setvcpuaffinity.cpumap = cpumap;
return do_dom0_op(xc_handle, &op);
}
int xc_domain_getinfo(int xc_handle,
uint32_t first_domid,
unsigned int max_doms,
xc_dominfo_t *info)
{
unsigned int nr_doms;
uint32_t next_domid = first_domid;
DECLARE_DOM0_OP;
int rc = 0;
memset(info, 0, max_doms*sizeof(xc_dominfo_t));
for ( nr_doms = 0; nr_doms < max_doms; nr_doms++ )
{
op.cmd = DOM0_GETDOMAININFO;
op.u.getdomaininfo.domain = (domid_t)next_domid;
if ( (rc = do_dom0_op(xc_handle, &op)) < 0 )
break;
info->domid = (uint16_t)op.u.getdomaininfo.domain;
info->dying = !!(op.u.getdomaininfo.flags & DOMFLAGS_DYING);
info->shutdown = !!(op.u.getdomaininfo.flags & DOMFLAGS_SHUTDOWN);
info->paused = !!(op.u.getdomaininfo.flags & DOMFLAGS_PAUSED);
info->blocked = !!(op.u.getdomaininfo.flags & DOMFLAGS_BLOCKED);
info->running = !!(op.u.getdomaininfo.flags & DOMFLAGS_RUNNING);
info->shutdown_reason =
(op.u.getdomaininfo.flags>>DOMFLAGS_SHUTDOWNSHIFT) &
DOMFLAGS_SHUTDOWNMASK;
if ( info->shutdown && (info->shutdown_reason == SHUTDOWN_crash) )
{
info->shutdown = 0;
info->crashed = 1;
}
info->ssidref = op.u.getdomaininfo.ssidref;
info->nr_pages = op.u.getdomaininfo.tot_pages;
info->max_memkb = op.u.getdomaininfo.max_pages << (PAGE_SHIFT - 10);
info->shared_info_frame = op.u.getdomaininfo.shared_info_frame;
info->cpu_time = op.u.getdomaininfo.cpu_time;
info->nr_online_vcpus = op.u.getdomaininfo.nr_online_vcpus;
info->max_vcpu_id = op.u.getdomaininfo.max_vcpu_id;
memcpy(info->handle, op.u.getdomaininfo.handle,
sizeof(xen_domain_handle_t));
next_domid = (uint16_t)op.u.getdomaininfo.domain + 1;
info++;
}
if( !nr_doms ) return rc;
return nr_doms;
}
int xc_domain_getinfolist(int xc_handle,
uint32_t first_domain,
unsigned int max_domains,
xc_domaininfo_t *info)
{
int ret = 0;
DECLARE_DOM0_OP;
if ( mlock(info, max_domains*sizeof(xc_domaininfo_t)) != 0 )
return -1;
op.cmd = DOM0_GETDOMAININFOLIST;
op.u.getdomaininfolist.first_domain = first_domain;
op.u.getdomaininfolist.max_domains = max_domains;
op.u.getdomaininfolist.buffer = info;
if ( xc_dom0_op(xc_handle, &op) < 0 )
ret = -1;
else
ret = op.u.getdomaininfolist.num_domains;
if ( munlock(info, max_domains*sizeof(xc_domaininfo_t)) != 0 )
ret = -1;
return ret;
}
int xc_vcpu_getcontext(int xc_handle,
uint32_t domid,
uint32_t vcpu,
vcpu_guest_context_t *ctxt)
{
int rc;
DECLARE_DOM0_OP;
op.cmd = DOM0_GETVCPUCONTEXT;
op.u.getvcpucontext.domain = (domid_t)domid;
op.u.getvcpucontext.vcpu = (uint16_t)vcpu;
op.u.getvcpucontext.ctxt = ctxt;
if ( (rc = mlock(ctxt, sizeof(*ctxt))) != 0 )
return rc;
rc = do_dom0_op(xc_handle, &op);
safe_munlock(ctxt, sizeof(*ctxt));
return rc;
}
int xc_shadow_control(int xc_handle,
uint32_t domid,
unsigned int sop,
unsigned long *dirty_bitmap,
unsigned long pages,
xc_shadow_control_stats_t *stats )
{
int rc;
DECLARE_DOM0_OP;
op.cmd = DOM0_SHADOW_CONTROL;
op.u.shadow_control.domain = (domid_t)domid;
op.u.shadow_control.op = sop;
op.u.shadow_control.dirty_bitmap = dirty_bitmap;
op.u.shadow_control.pages = pages;
rc = do_dom0_op(xc_handle, &op);
if ( stats )
memcpy(stats, &op.u.shadow_control.stats,
sizeof(xc_shadow_control_stats_t));
return (rc == 0) ? op.u.shadow_control.pages : rc;
}
int xc_domain_setcpuweight(int xc_handle,
uint32_t domid,
float weight)
{
int sched_id;
int ret;
/* Figure out which scheduler is currently used: */
if ( (ret = xc_sched_id(xc_handle, &sched_id)) != 0 )
return ret;
switch ( sched_id )
{
case SCHED_BVT:
{
uint32_t mcuadv;
int warpback;
int32_t warpvalue;
long long warpl;
long long warpu;
/* Preserve all the scheduling parameters apart
of MCU advance. */
if ( (ret = xc_bvtsched_domain_get(
xc_handle, domid, &mcuadv,
&warpback, &warpvalue, &warpl, &warpu)) != 0 )
return ret;
/* The MCU advance is inverse of the weight.
Default value of the weight is 1, default mcuadv 10.
The scaling factor is therefore 10. */
if ( weight > 0 )
mcuadv = 10 / weight;
ret = xc_bvtsched_domain_set(xc_handle, domid, mcuadv,
warpback, warpvalue, warpl, warpu);
break;
}
}
return ret;
}
int xc_domain_setmaxmem(int xc_handle,
uint32_t domid,
unsigned int max_memkb)
{
DECLARE_DOM0_OP;
op.cmd = DOM0_SETDOMAINMAXMEM;
op.u.setdomainmaxmem.domain = (domid_t)domid;
op.u.setdomainmaxmem.max_memkb = max_memkb;
return do_dom0_op(xc_handle, &op);
}
int xc_domain_memory_increase_reservation(int xc_handle,
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
unsigned int address_bits,
unsigned long *extent_start)
{
int err;
struct xen_memory_reservation reservation = {
.extent_start = extent_start, /* may be NULL */
.nr_extents = nr_extents,
.extent_order = extent_order,
.address_bits = address_bits,
.domid = domid
};
err = xc_memory_op(xc_handle, XENMEM_increase_reservation, &reservation);
if ( err == nr_extents )
return 0;
if ( err > 0 )
{
fprintf(stderr, "Failed allocation for dom %d: "
"%ld pages order %d addr_bits %d\n",
domid, nr_extents, extent_order, address_bits);
errno = ENOMEM;
err = -1;
}
return err;
}
int xc_domain_memory_decrease_reservation(int xc_handle,
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
unsigned long *extent_start)
{
int err;
struct xen_memory_reservation reservation = {
.extent_start = extent_start,
.nr_extents = nr_extents,
.extent_order = extent_order,
.address_bits = 0,
.domid = domid
};
if ( extent_start == NULL )
{
fprintf(stderr,"decrease_reservation extent_start is NULL!\n");
errno = EINVAL;
return -1;
}
err = xc_memory_op(xc_handle, XENMEM_decrease_reservation, &reservation);
if ( err == nr_extents )
return 0;
if ( err > 0 )
{
fprintf(stderr,"Failed deallocation for dom %d: %ld pages order %d\n",
domid, nr_extents, extent_order);
errno = EBUSY;
err = -1;
}
return err;
}
int xc_domain_memory_populate_physmap(int xc_handle,
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
unsigned int address_bits,
unsigned long *extent_start)
{
int err;
struct xen_memory_reservation reservation = {
.extent_start = extent_start,
.nr_extents = nr_extents,
.extent_order = extent_order,
.address_bits = address_bits,
.domid = domid
};
err = xc_memory_op(xc_handle, XENMEM_populate_physmap, &reservation);
if ( err == nr_extents )
return 0;
if ( err > 0 )
{
fprintf(stderr,"Failed deallocation for dom %d: %ld pages order %d\n",
domid, nr_extents, extent_order);
errno = EBUSY;
err = -1;
}
return err;
}
int xc_domain_translate_gpfn_list(int xc_handle,
uint32_t domid,
unsigned long nr_gpfns,
unsigned long *gpfn_list,
unsigned long *mfn_list)
{
struct xen_translate_gpfn_list op = {
.domid = domid,
.nr_gpfns = nr_gpfns,
.gpfn_list = gpfn_list,
.mfn_list = mfn_list
};
return xc_memory_op(xc_handle, XENMEM_translate_gpfn_list, &op);
}
int xc_domain_max_vcpus(int xc_handle, uint32_t domid, unsigned int max)
{
DECLARE_DOM0_OP;
op.cmd = DOM0_MAX_VCPUS;
op.u.max_vcpus.domain = (domid_t)domid;
op.u.max_vcpus.max = max;
return do_dom0_op(xc_handle, &op);
}
int xc_domain_sethandle(int xc_handle, uint32_t domid,
xen_domain_handle_t handle)
{
DECLARE_DOM0_OP;
op.cmd = DOM0_SETDOMAINHANDLE;
op.u.setdomainhandle.domain = (domid_t)domid;
memcpy(op.u.setdomainhandle.handle, handle, sizeof(xen_domain_handle_t));
return do_dom0_op(xc_handle, &op);
}
int xc_vcpu_getinfo(int xc_handle,
uint32_t domid,
uint32_t vcpu,
xc_vcpuinfo_t *info)
{
int rc;
DECLARE_DOM0_OP;
op.cmd = DOM0_GETVCPUINFO;
op.u.getvcpuinfo.domain = (domid_t)domid;
op.u.getvcpuinfo.vcpu = (uint16_t)vcpu;
rc = do_dom0_op(xc_handle, &op);
memcpy(info, &op.u.getvcpuinfo, sizeof(*info));
return rc;
}
int xc_domain_ioport_permission(int xc_handle,
uint32_t domid,
uint32_t first_port,
uint32_t nr_ports,
uint32_t allow_access)
{
DECLARE_DOM0_OP;
op.cmd = DOM0_IOPORT_PERMISSION;
op.u.ioport_permission.domain = (domid_t)domid;
op.u.ioport_permission.first_port = first_port;
op.u.ioport_permission.nr_ports = nr_ports;
op.u.ioport_permission.allow_access = allow_access;
return do_dom0_op(xc_handle, &op);
}
int xc_vcpu_setcontext(int xc_handle,
uint32_t domid,
uint32_t vcpu,
vcpu_guest_context_t *ctxt)
{
dom0_op_t op;
int rc;
op.cmd = DOM0_SETVCPUCONTEXT;
op.u.setvcpucontext.domain = domid;
op.u.setvcpucontext.vcpu = vcpu;
op.u.setvcpucontext.ctxt = ctxt;
if ( (rc = mlock(ctxt, sizeof(*ctxt))) != 0 )
return rc;
rc = do_dom0_op(xc_handle, &op);
safe_munlock(ctxt, sizeof(*ctxt));
return rc;
}
int xc_domain_irq_permission(int xc_handle,
uint32_t domid,
uint8_t pirq,
uint8_t allow_access)
{
dom0_op_t op;
op.cmd = DOM0_IRQ_PERMISSION;
op.u.irq_permission.domain = domid;
op.u.irq_permission.pirq = pirq;
op.u.irq_permission.allow_access = allow_access;
return do_dom0_op(xc_handle, &op);
}
int xc_domain_iomem_permission(int xc_handle,
uint32_t domid,
unsigned long first_mfn,
unsigned long nr_mfns,
uint8_t allow_access)
{
dom0_op_t op;
op.cmd = DOM0_IOMEM_PERMISSION;
op.u.iomem_permission.domain = domid;
op.u.iomem_permission.first_mfn = first_mfn;
op.u.iomem_permission.nr_mfns = nr_mfns;
op.u.iomem_permission.allow_access = allow_access;
return do_dom0_op(xc_handle, &op);
}
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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