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/*
* xc_psr.c
*
* platform shared resource related API functions.
*
* Copyright (C) 2014 Intel Corporation
* Author Dongxiao Xu <dongxiao.xu@intel.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; version 2.1 only. with the special
* exception on linking described in file LICENSE.
*
* 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 Lesser General Public License for more details.
*/
#include <assert.h>
#include "xc_private.h"
#include "xc_msr_x86.h"
#define IA32_CMT_CTR_ERROR_MASK (0x3ull << 62)
#define EVTID_L3_OCCUPANCY 0x1
#define EVTID_TOTAL_MEM_COUNT 0x2
#define EVTID_LOCAL_MEM_COUNT 0x3
int xc_psr_cmt_attach(xc_interface *xch, uint32_t domid)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_psr_cmt_op;
domctl.domain = domid;
domctl.u.psr_cmt_op.cmd = XEN_DOMCTL_PSR_CMT_OP_ATTACH;
return do_domctl(xch, &domctl);
}
int xc_psr_cmt_detach(xc_interface *xch, uint32_t domid)
{
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_psr_cmt_op;
domctl.domain = domid;
domctl.u.psr_cmt_op.cmd = XEN_DOMCTL_PSR_CMT_OP_DETACH;
return do_domctl(xch, &domctl);
}
int xc_psr_cmt_get_domain_rmid(xc_interface *xch, uint32_t domid,
uint32_t *rmid)
{
int rc;
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_psr_cmt_op;
domctl.domain = domid;
domctl.u.psr_cmt_op.cmd = XEN_DOMCTL_PSR_CMT_OP_QUERY_RMID;
rc = do_domctl(xch, &domctl);
if ( !rc )
*rmid = domctl.u.psr_cmt_op.data;
return rc;
}
int xc_psr_cmt_get_total_rmid(xc_interface *xch, uint32_t *total_rmid)
{
static int val = 0;
int rc;
DECLARE_SYSCTL;
if ( val )
{
*total_rmid = val;
return 0;
}
sysctl.cmd = XEN_SYSCTL_psr_cmt_op;
sysctl.u.psr_cmt_op.cmd = XEN_SYSCTL_PSR_CMT_get_total_rmid;
sysctl.u.psr_cmt_op.flags = 0;
rc = xc_sysctl(xch, &sysctl);
if ( !rc )
val = *total_rmid = sysctl.u.psr_cmt_op.u.data;
return rc;
}
int xc_psr_cmt_get_l3_upscaling_factor(xc_interface *xch,
uint32_t *upscaling_factor)
{
static int val = 0;
int rc;
DECLARE_SYSCTL;
if ( val )
{
*upscaling_factor = val;
return 0;
}
sysctl.cmd = XEN_SYSCTL_psr_cmt_op;
sysctl.u.psr_cmt_op.cmd =
XEN_SYSCTL_PSR_CMT_get_l3_upscaling_factor;
sysctl.u.psr_cmt_op.flags = 0;
rc = xc_sysctl(xch, &sysctl);
if ( !rc )
val = *upscaling_factor = sysctl.u.psr_cmt_op.u.data;
return rc;
}
int xc_psr_cmt_get_l3_event_mask(xc_interface *xch, uint32_t *event_mask)
{
int rc;
DECLARE_SYSCTL;
sysctl.cmd = XEN_SYSCTL_psr_cmt_op;
sysctl.u.psr_cmt_op.cmd =
XEN_SYSCTL_PSR_CMT_get_l3_event_mask;
sysctl.u.psr_cmt_op.flags = 0;
rc = xc_sysctl(xch, &sysctl);
if ( !rc )
*event_mask = sysctl.u.psr_cmt_op.u.data;
return rc;
}
int xc_psr_cmt_get_l3_cache_size(xc_interface *xch, uint32_t cpu,
uint32_t *l3_cache_size)
{
static int val = 0;
int rc;
DECLARE_SYSCTL;
if ( val )
{
*l3_cache_size = val;
return 0;
}
sysctl.cmd = XEN_SYSCTL_psr_cmt_op;
sysctl.u.psr_cmt_op.cmd =
XEN_SYSCTL_PSR_CMT_get_l3_cache_size;
sysctl.u.psr_cmt_op.flags = 0;
sysctl.u.psr_cmt_op.u.l3_cache.cpu = cpu;
rc = xc_sysctl(xch, &sysctl);
if ( !rc )
val = *l3_cache_size= sysctl.u.psr_cmt_op.u.data;
return rc;
}
int xc_psr_cmt_get_data(xc_interface *xch, uint32_t rmid, uint32_t cpu,
xc_psr_cmt_type type, uint64_t *monitor_data,
uint64_t *tsc)
{
xc_resource_op_t op;
xc_resource_entry_t entries[3];
xc_resource_entry_t *tsc_entry = NULL;
uint32_t evtid, nr = 0;
int rc;
switch ( type )
{
case XC_PSR_CMT_L3_OCCUPANCY:
evtid = EVTID_L3_OCCUPANCY;
break;
case XC_PSR_CMT_TOTAL_MEM_COUNT:
evtid = EVTID_TOTAL_MEM_COUNT;
break;
case XC_PSR_CMT_LOCAL_MEM_COUNT:
evtid = EVTID_LOCAL_MEM_COUNT;
break;
default:
return -1;
}
entries[nr].u.cmd = XEN_RESOURCE_OP_MSR_WRITE;
entries[nr].idx = MSR_IA32_CMT_EVTSEL;
entries[nr].val = (uint64_t)rmid << 32 | evtid;
entries[nr].rsvd = 0;
nr++;
entries[nr].u.cmd = XEN_RESOURCE_OP_MSR_READ;
entries[nr].idx = MSR_IA32_CMT_CTR;
entries[nr].val = 0;
entries[nr].rsvd = 0;
nr++;
if ( tsc != NULL )
{
tsc_entry = &entries[nr];
entries[nr].u.cmd = XEN_RESOURCE_OP_MSR_READ;
entries[nr].idx = MSR_IA32_TSC;
entries[nr].val = 0;
entries[nr].rsvd = 0;
nr++;
}
assert(nr <= ARRAY_SIZE(entries));
op.cpu = cpu;
op.nr_entries = nr;
op.entries = entries;
rc = xc_resource_op(xch, 1, &op);
if ( rc < 0 )
return rc;
if ( op.result != nr || entries[1].val & IA32_CMT_CTR_ERROR_MASK )
return -1;
*monitor_data = entries[1].val;
if ( tsc_entry != NULL )
*tsc = tsc_entry->val;
return 0;
}
int xc_psr_cmt_enabled(xc_interface *xch)
{
static int val = -1;
int rc;
DECLARE_SYSCTL;
if ( val >= 0 )
return val;
sysctl.cmd = XEN_SYSCTL_psr_cmt_op;
sysctl.u.psr_cmt_op.cmd = XEN_SYSCTL_PSR_CMT_enabled;
sysctl.u.psr_cmt_op.flags = 0;
rc = do_sysctl(xch, &sysctl);
if ( !rc )
{
val = sysctl.u.psr_cmt_op.u.data;
return val;
}
return 0;
}
int xc_psr_set_domain_data(xc_interface *xch, uint32_t domid,
xc_psr_type type, uint32_t target,
uint64_t data)
{
DECLARE_DOMCTL;
uint32_t cmd;
switch ( type )
{
case XC_PSR_CAT_L3_CBM:
cmd = XEN_DOMCTL_PSR_SET_L3_CBM;
break;
case XC_PSR_CAT_L3_CBM_CODE:
cmd = XEN_DOMCTL_PSR_SET_L3_CODE;
break;
case XC_PSR_CAT_L3_CBM_DATA:
cmd = XEN_DOMCTL_PSR_SET_L3_DATA;
break;
case XC_PSR_CAT_L2_CBM:
cmd = XEN_DOMCTL_PSR_SET_L2_CBM;
break;
case XC_PSR_MBA_THRTL:
cmd = XEN_DOMCTL_PSR_SET_MBA_THRTL;
break;
default:
errno = EINVAL;
return -1;
}
domctl.cmd = XEN_DOMCTL_psr_alloc;
domctl.domain = domid;
domctl.u.psr_alloc.cmd = cmd;
domctl.u.psr_alloc.target = target;
domctl.u.psr_alloc.data = data;
return do_domctl(xch, &domctl);
}
int xc_psr_get_domain_data(xc_interface *xch, uint32_t domid,
xc_psr_type type, uint32_t target,
uint64_t *data)
{
int rc;
DECLARE_DOMCTL;
uint32_t cmd;
switch ( type )
{
case XC_PSR_CAT_L3_CBM:
cmd = XEN_DOMCTL_PSR_GET_L3_CBM;
break;
case XC_PSR_CAT_L3_CBM_CODE:
cmd = XEN_DOMCTL_PSR_GET_L3_CODE;
break;
case XC_PSR_CAT_L3_CBM_DATA:
cmd = XEN_DOMCTL_PSR_GET_L3_DATA;
break;
case XC_PSR_CAT_L2_CBM:
cmd = XEN_DOMCTL_PSR_GET_L2_CBM;
break;
case XC_PSR_MBA_THRTL:
cmd = XEN_DOMCTL_PSR_GET_MBA_THRTL;
break;
default:
errno = EINVAL;
return -1;
}
domctl.cmd = XEN_DOMCTL_psr_alloc;
domctl.domain = domid;
domctl.u.psr_alloc.cmd = cmd;
domctl.u.psr_alloc.target = target;
rc = do_domctl(xch, &domctl);
if ( !rc )
*data = domctl.u.psr_alloc.data;
return rc;
}
int xc_psr_get_hw_info(xc_interface *xch, uint32_t socket,
xc_psr_feat_type type, xc_psr_hw_info *hw_info)
{
int rc = -1;
DECLARE_SYSCTL;
if ( !hw_info )
{
errno = EINVAL;
return rc;
}
sysctl.cmd = XEN_SYSCTL_psr_alloc;
sysctl.u.psr_alloc.target = socket;
switch ( type )
{
case XC_PSR_CAT_L2:
case XC_PSR_CAT_L3:
sysctl.u.psr_alloc.cmd = (type == XC_PSR_CAT_L2) ?
XEN_SYSCTL_PSR_get_l2_info :
XEN_SYSCTL_PSR_get_l3_info;
rc = xc_sysctl(xch, &sysctl);
if ( rc )
break;
hw_info->cat.cos_max = sysctl.u.psr_alloc.u.cat_info.cos_max;
hw_info->cat.cbm_len = sysctl.u.psr_alloc.u.cat_info.cbm_len;
hw_info->cat.cdp_enabled = (type == XC_PSR_CAT_L2) ?
false :
(sysctl.u.psr_alloc.u.cat_info.flags &
XEN_SYSCTL_PSR_CAT_L3_CDP);
break;
case XC_PSR_MBA:
sysctl.u.psr_alloc.cmd = XEN_SYSCTL_PSR_get_mba_info;
rc = xc_sysctl(xch, &sysctl);
if ( rc )
break;
hw_info->mba.cos_max = sysctl.u.psr_alloc.u.mba_info.cos_max;
hw_info->mba.thrtl_max = sysctl.u.psr_alloc.u.mba_info.thrtl_max;
hw_info->mba.linear = sysctl.u.psr_alloc.u.mba_info.flags &
XEN_SYSCTL_PSR_MBA_LINEAR;
break;
default:
errno = EOPNOTSUPP;
break;
}
return rc;
}
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
|
