mirror of
https://github.com/xen-project/xen.git
synced 2026-10-29 02:30:03 +01:00
kfraser@localhost.localdomain
25f5b0ff15
This simplifies the IRQ logic significantly and avoids the bogus
hvm_pic_assist() on domain resume path.
There is more work to be done here. At least:
1. set-irq-level should really be set-interrupt-wire-level. Wire
state needs to be distinguished from PIC (in particular, PIC IRR)
state.
2. Hypercalls can be batched in qemu and pushed down in one
multicall.
Signed-off-by: Keir Fraser <keir@xensource.com>
129 lines
2.7 KiB
C
129 lines
2.7 KiB
C
/******************************************************************************
|
|
* xc_misc.c
|
|
*
|
|
* Miscellaneous control interface functions.
|
|
*/
|
|
|
|
#include "xc_private.h"
|
|
#include <xen/hvm/hvm_op.h>
|
|
|
|
int xc_readconsolering(int xc_handle,
|
|
char **pbuffer,
|
|
unsigned int *pnr_chars,
|
|
int clear)
|
|
{
|
|
int ret;
|
|
DECLARE_SYSCTL;
|
|
char *buffer = *pbuffer;
|
|
unsigned int nr_chars = *pnr_chars;
|
|
|
|
sysctl.cmd = XEN_SYSCTL_readconsole;
|
|
set_xen_guest_handle(sysctl.u.readconsole.buffer, buffer);
|
|
sysctl.u.readconsole.count = nr_chars;
|
|
sysctl.u.readconsole.clear = clear;
|
|
|
|
if ( (ret = lock_pages(buffer, nr_chars)) != 0 )
|
|
return ret;
|
|
|
|
if ( (ret = do_sysctl(xc_handle, &sysctl)) == 0 )
|
|
*pnr_chars = sysctl.u.readconsole.count;
|
|
|
|
unlock_pages(buffer, nr_chars);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int xc_physinfo(int xc_handle,
|
|
xc_physinfo_t *put_info)
|
|
{
|
|
int ret;
|
|
DECLARE_SYSCTL;
|
|
|
|
sysctl.cmd = XEN_SYSCTL_physinfo;
|
|
|
|
if ( (ret = do_sysctl(xc_handle, &sysctl)) != 0 )
|
|
return ret;
|
|
|
|
memcpy(put_info, &sysctl.u.physinfo, sizeof(*put_info));
|
|
|
|
return 0;
|
|
}
|
|
|
|
int xc_sched_id(int xc_handle,
|
|
int *sched_id)
|
|
{
|
|
int ret;
|
|
DECLARE_SYSCTL;
|
|
|
|
sysctl.cmd = XEN_SYSCTL_sched_id;
|
|
|
|
if ( (ret = do_sysctl(xc_handle, &sysctl)) != 0 )
|
|
return ret;
|
|
|
|
*sched_id = sysctl.u.sched_id.sched_id;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int xc_perfc_control(int xc_handle,
|
|
uint32_t opcode,
|
|
xc_perfc_desc_t *desc,
|
|
xc_perfc_val_t *val,
|
|
int *nbr_desc,
|
|
int *nbr_val)
|
|
{
|
|
int rc;
|
|
DECLARE_SYSCTL;
|
|
|
|
sysctl.cmd = XEN_SYSCTL_perfc_op;
|
|
sysctl.u.perfc_op.cmd = opcode;
|
|
set_xen_guest_handle(sysctl.u.perfc_op.desc, desc);
|
|
set_xen_guest_handle(sysctl.u.perfc_op.val, val);
|
|
|
|
rc = do_sysctl(xc_handle, &sysctl);
|
|
|
|
if (nbr_desc)
|
|
*nbr_desc = sysctl.u.perfc_op.nr_counters;
|
|
if (nbr_val)
|
|
*nbr_val = sysctl.u.perfc_op.nr_vals;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int xc_hvm_set_irq_level(int xc_handle, domid_t dom, int irq, int level)
|
|
{
|
|
DECLARE_HYPERCALL;
|
|
struct xen_hvm_set_irq_level arg;
|
|
int rc;
|
|
|
|
hypercall.op = __HYPERVISOR_hvm_op;
|
|
hypercall.arg[0] = HVMOP_set_irq_level;
|
|
hypercall.arg[1] = (unsigned long)&arg;
|
|
|
|
arg.domid = dom;
|
|
arg.irq = irq;
|
|
arg.level = level;
|
|
|
|
if ( mlock(&arg, sizeof(arg)) != 0 )
|
|
{
|
|
PERROR("Could not lock memory");
|
|
return -1;
|
|
}
|
|
|
|
rc = do_xen_hypercall(xc_handle, &hypercall);
|
|
|
|
safe_munlock(&arg, sizeof(arg));
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* mode: C
|
|
* c-set-style: "BSD"
|
|
* c-basic-offset: 4
|
|
* tab-width: 4
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*/
|