static efi_system_table_t __init *xen_efi_probe(void)
{
struct xen_platform_op op = {
.cmd = XENPF_firmware_info,
.u.firmware_info = {
.type = XEN_FW_EFI_INFO,
.index = XEN_FW_EFI_CONFIG_TABLE
}
};
union xenpf_efi_info *info = &op.u.firmware_info.u.efi_info;
if (!xen_initial_domain() || HYPERVISOR_platform_op(&op) < 0)
return NULL;
/* Here we know that Xen runs on EFI platform. */
efi.get_time = xen_efi_get_time;
efi.set_time = xen_efi_set_time;
efi.get_wakeup_time = xen_efi_get_wakeup_time;
efi.set_wakeup_time = xen_efi_set_wakeup_time;
efi.get_variable = xen_efi_get_variable;
efi.get_next_variable = xen_efi_get_next_variable;
efi.set_variable = xen_efi_set_variable;
efi.query_variable_info = xen_efi_query_variable_info;
efi.update_capsule = xen_efi_update_capsule;
efi.query_capsule_caps = xen_efi_query_capsule_caps;
efi.get_next_high_mono_count = xen_efi_get_next_high_mono_count;
efi.reset_system = xen_efi_reset_system;
efi_systab_xen.tables = info->cfg.addr;
efi_systab_xen.nr_tables = info->cfg.nent;
op.cmd = XENPF_firmware_info;
op.u.firmware_info.type = XEN_FW_EFI_INFO;
op.u.firmware_info.index = XEN_FW_EFI_VENDOR;
info->vendor.bufsz = sizeof(vendor);
set_xen_guest_handle(info->vendor.name, vendor);
if (HYPERVISOR_platform_op(&op) == 0) {
efi_systab_xen.fw_vendor = __pa_symbol(vendor);
efi_systab_xen.fw_revision = info->vendor.revision;
} else
efi_systab_xen.fw_vendor = __pa_symbol(L"UNKNOWN");
op.cmd = XENPF_firmware_info;
op.u.firmware_info.type = XEN_FW_EFI_INFO;
op.u.firmware_info.index = XEN_FW_EFI_VERSION;
if (HYPERVISOR_platform_op(&op) == 0)
efi_systab_xen.hdr.revision = info->version;
op.cmd = XENPF_firmware_info;
op.u.firmware_info.type = XEN_FW_EFI_INFO;
op.u.firmware_info.index = XEN_FW_EFI_RT_VERSION;
if (HYPERVISOR_platform_op(&op) == 0)
efi.runtime_version = info->version;
return &efi_systab_xen;
}
/*
* Returns the effective MTRR type for the region
* Error returns:
* - 0xFE - when the range is "not entirely covered" by _any_ var range MTRR
* - 0xFF - when MTRR is not enabled
*/
u8 mtrr_type_lookup(u64 start, u64 end)
{
int i, error;
u64 start_mfn, end_mfn, base_mfn, top_mfn;
u8 prev_match, curr_match;
struct xen_platform_op op;
if (!is_initial_xendomain())
return MTRR_TYPE_WRBACK;
if (!num_var_ranges)
return 0xFF;
start_mfn = start >> PAGE_SHIFT;
/* Make end inclusive end, instead of exclusive */
end_mfn = --end >> PAGE_SHIFT;
/* Look in fixed ranges. Just return the type as per start */
if (start_mfn < 0x100) {
#if 0//todo
op.cmd = XENPF_read_memtype;
op.u.read_memtype.reg = ???;
error = HYPERVISOR_platform_op(&op);
if (!error)
return op.u.read_memtype.type;
#endif
return MTRR_TYPE_UNCACHABLE;
}
int mtrr_add_page(unsigned long base, unsigned long size,
unsigned int type, bool increment)
{
int error;
struct xen_platform_op op;
mutex_lock(&mtrr_mutex);
op.cmd = XENPF_add_memtype;
op.u.add_memtype.mfn = base;
op.u.add_memtype.nr_mfns = size;
op.u.add_memtype.type = type;
error = HYPERVISOR_platform_op(&op);
if (error) {
mutex_unlock(&mtrr_mutex);
BUG_ON(error > 0);
return error;
}
if (increment)
++mtrr_usage_table[op.u.add_memtype.reg];
mutex_unlock(&mtrr_mutex);
return op.u.add_memtype.reg;
}
void __init copy_edd(void)
{
int ret;
struct xen_platform_op op;
if (!is_initial_xendomain())
return;
op.cmd = XENPF_firmware_info;
op.u.firmware_info.type = XEN_FW_DISK_INFO;
for (op.u.firmware_info.index = 0;
edd.edd_info_nr < EDDMAXNR;
op.u.firmware_info.index++) {
struct edd_info *info = edd.edd_info + edd.edd_info_nr;
info->params.length = sizeof(info->params);
set_xen_guest_handle(op.u.firmware_info.u.disk_info.edd_params,
&info->params);
ret = HYPERVISOR_platform_op(&op);
if (ret)
break;
#define C(x) info->x = op.u.firmware_info.u.disk_info.x
C(device);
C(version);
C(interface_support);
C(legacy_max_cylinder);
C(legacy_max_head);
C(legacy_sectors_per_track);
#undef C
edd.edd_info_nr++;
}
op.u.firmware_info.type = XEN_FW_DISK_MBR_SIGNATURE;
for (op.u.firmware_info.index = 0;
edd.mbr_signature_nr < EDD_MBR_SIG_MAX;
op.u.firmware_info.index++) {
ret = HYPERVISOR_platform_op(&op);
if (ret)
break;
edd.mbr_signature[edd.mbr_signature_nr++] =
op.u.firmware_info.u.disk_mbr_signature.mbr_signature;
}
}
static int xen_pvclock_gtod_notify(struct notifier_block *nb,
unsigned long was_set, void *priv)
{
/* Protected by the calling core code serialization */
static struct timespec64 next_sync;
struct xen_platform_op op;
struct timespec64 now;
struct timekeeper *tk = priv;
static bool settime64_supported = true;
int ret;
now.tv_sec = tk->xtime_sec;
now.tv_nsec = (long)(tk->tkr_mono.xtime_nsec >> tk->tkr_mono.shift);
/*
* We only take the expensive HV call when the clock was set
* or when the 11 minutes RTC synchronization time elapsed.
*/
if (!was_set && timespec64_compare(&now, &next_sync) < 0)
return NOTIFY_OK;
again:
if (settime64_supported) {
op.cmd = XENPF_settime64;
op.u.settime64.mbz = 0;
op.u.settime64.secs = now.tv_sec;
op.u.settime64.nsecs = now.tv_nsec;
op.u.settime64.system_time = xen_clocksource_read();
} else {
op.cmd = XENPF_settime32;
op.u.settime32.secs = now.tv_sec;
op.u.settime32.nsecs = now.tv_nsec;
op.u.settime32.system_time = xen_clocksource_read();
}
ret = HYPERVISOR_platform_op(&op);
if (ret == -ENOSYS && settime64_supported) {
settime64_supported = false;
goto again;
}
if (ret < 0)
return NOTIFY_BAD;
/*
* Move the next drift compensation time 11 minutes
* ahead. That's emulating the sync_cmos_clock() update for
* the hardware RTC.
*/
next_sync = now;
next_sync.tv_sec += 11 * 60;
return NOTIFY_OK;
}
efi_status_t xen_efi_get_next_high_mono_count(u32 *count)
{
struct xen_platform_op op = INIT_EFI_OP(get_next_high_monotonic_count);
if (HYPERVISOR_platform_op(&op) < 0)
return EFI_UNSUPPORTED;
*count = efi_data(op).misc;
return efi_data(op).status;
}
static void __init set_num_var_ranges(void)
{
struct xen_platform_op op;
for (num_var_ranges = 0; ; num_var_ranges++) {
op.cmd = XENPF_read_memtype;
op.u.read_memtype.reg = num_var_ranges;
if (HYPERVISOR_platform_op(&op) != 0)
break;
}
}
efi_status_t xen_efi_set_time(efi_time_t *tm)
{
struct xen_platform_op op = INIT_EFI_OP(set_time);
BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.set_time));
memcpy(&efi_data(op).u.set_time, tm, sizeof(*tm));
if (HYPERVISOR_platform_op(&op) < 0)
return EFI_UNSUPPORTED;
return efi_data(op).status;
}
void generic_get_mtrr(unsigned int reg, unsigned long *base,
unsigned long *size, mtrr_type * type)
{
struct xen_platform_op op;
op.cmd = XENPF_read_memtype;
op.u.read_memtype.reg = reg;
if (unlikely(HYPERVISOR_platform_op(&op)))
memset(&op.u.read_memtype, 0, sizeof(op.u.read_memtype));
*size = op.u.read_memtype.nr_mfns;
*base = op.u.read_memtype.mfn;
*type = op.u.read_memtype.type;
}
efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
{
struct xen_platform_op op = INIT_EFI_OP(set_wakeup_time);
BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.set_wakeup_time));
if (enabled)
efi_data(op).misc = XEN_EFI_SET_WAKEUP_TIME_ENABLE;
if (tm)
memcpy(&efi_data(op).u.set_wakeup_time, tm, sizeof(*tm));
else
efi_data(op).misc |= XEN_EFI_SET_WAKEUP_TIME_ENABLE_ONLY;
if (HYPERVISOR_platform_op(&op) < 0)
return EFI_UNSUPPORTED;
return efi_data(op).status;
}
void __init copy_edid(void)
{
#if defined(CONFIG_FIRMWARE_EDID) && defined(CONFIG_X86)
struct xen_platform_op op;
if (!is_initial_xendomain())
return;
op.cmd = XENPF_firmware_info;
op.u.firmware_info.index = 0;
op.u.firmware_info.type = XEN_FW_VBEDDC_INFO;
set_xen_guest_handle(op.u.firmware_info.u.vbeddc_info.edid,
edid_info.dummy);
if (HYPERVISOR_platform_op(&op) != 0)
memset(edid_info.dummy, 0x13, sizeof(edid_info.dummy));
#endif
}
/*
* On dom0, invoke the underlying driver to update the physical RTC,
* and tell the hypervisor to update its idea of global time.
*
* On domU, we don't have permission to update the machine's physical RTC,
* so quietly ignore the attempt.
*/
static void
todxen_set(tod_ops_t *top, timestruc_t ts)
{
xen_platform_op_t op;
if (DOMAIN_IS_INITDOMAIN(xen_info)) {
ASSERT(MUTEX_HELD(&tod_lock));
TODOP_SET(top->tod_next, ts);
op.cmd = XENPF_settime;
op.interface_version = XENPF_INTERFACE_VERSION;
op.u.settime.secs = ts.tv_sec - ggmtl();
op.u.settime.nsecs = ts.tv_nsec;
op.u.settime.system_time = xpv_getsystime();
(void) HYPERVISOR_platform_op(&op);
}
}
efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
unsigned long count, unsigned long sg_list)
{
struct xen_platform_op op = INIT_EFI_OP(update_capsule);
if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
return EFI_UNSUPPORTED;
set_xen_guest_handle(efi_data(op).u.update_capsule.capsule_header_array,
capsules);
efi_data(op).u.update_capsule.capsule_count = count;
efi_data(op).u.update_capsule.sg_list = sg_list;
if (HYPERVISOR_platform_op(&op) < 0)
return EFI_UNSUPPORTED;
return efi_data(op).status;
}
int mtrr_del_page(int reg, unsigned long base, unsigned long size)
{
unsigned i;
mtrr_type ltype;
unsigned long lbase, lsize;
int error = -EINVAL;
struct xen_platform_op op;
mutex_lock(&mtrr_mutex);
if (reg < 0) {
/* Search for existing MTRR */
for (i = 0; i < num_var_ranges; ++i) {
mtrr_if->get(i, &lbase, &lsize, <ype);
if (lbase == base && lsize == size) {
reg = i;
break;
}
}
if (reg < 0) {
pr_debug("mtrr: no MTRR for %lx000,%lx000 found\n",
base, size);
goto out;
}
}
if (mtrr_usage_table[reg] < 1) {
pr_warning("mtrr: reg: %d has count=0\n", reg);
goto out;
}
if (--mtrr_usage_table[reg] < 1) {
op.cmd = XENPF_del_memtype;
op.u.del_memtype.handle = 0;
op.u.del_memtype.reg = reg;
error = HYPERVISOR_platform_op(&op);
if (error) {
BUG_ON(error > 0);
goto out;
}
}
error = reg;
out:
mutex_unlock(&mtrr_mutex);
return error;
}
efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
u32 attr, unsigned long data_size,
void *data)
{
struct xen_platform_op op = INIT_EFI_OP(set_variable);
set_xen_guest_handle(efi_data(op).u.set_variable.name, name);
efi_data(op).misc = attr;
BUILD_BUG_ON(sizeof(*vendor) !=
sizeof(efi_data(op).u.set_variable.vendor_guid));
memcpy(&efi_data(op).u.set_variable.vendor_guid, vendor, sizeof(*vendor));
efi_data(op).u.set_variable.size = data_size;
set_xen_guest_handle(efi_data(op).u.set_variable.data, data);
if (HYPERVISOR_platform_op(&op) < 0)
return EFI_UNSUPPORTED;
return efi_data(op).status;
}
efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
u64 *remaining_space,
u64 *max_variable_size)
{
struct xen_platform_op op = INIT_EFI_OP(query_variable_info);
if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
return EFI_UNSUPPORTED;
efi_data(op).u.query_variable_info.attr = attr;
if (HYPERVISOR_platform_op(&op) < 0)
return EFI_UNSUPPORTED;
*storage_space = efi_data(op).u.query_variable_info.max_store_size;
*remaining_space = efi_data(op).u.query_variable_info.remain_store_size;
*max_variable_size = efi_data(op).u.query_variable_info.max_size;
return efi_data(op).status;
}
efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
efi_time_t *tm)
{
struct xen_platform_op op = INIT_EFI_OP(get_wakeup_time);
if (HYPERVISOR_platform_op(&op) < 0)
return EFI_UNSUPPORTED;
if (tm) {
BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.get_wakeup_time));
memcpy(tm, &efi_data(op).u.get_wakeup_time, sizeof(*tm));
}
if (enabled)
*enabled = !!(efi_data(op).misc & XEN_EFI_GET_WAKEUP_TIME_ENABLED);
if (pending)
*pending = !!(efi_data(op).misc & XEN_EFI_GET_WAKEUP_TIME_PENDING);
return efi_data(op).status;
}
efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
{
struct xen_platform_op op = INIT_EFI_OP(get_time);
if (HYPERVISOR_platform_op(&op) < 0)
return EFI_UNSUPPORTED;
if (tm) {
BUILD_BUG_ON(sizeof(*tm) != sizeof(efi_data(op).u.get_time.time));
memcpy(tm, &efi_data(op).u.get_time.time, sizeof(*tm));
}
if (tc) {
tc->resolution = efi_data(op).u.get_time.resolution;
tc->accuracy = efi_data(op).u.get_time.accuracy;
tc->sets_to_zero = !!(efi_data(op).misc &
XEN_EFI_GET_TIME_SET_CLEARS_NS);
}
return efi_data(op).status;
}
efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
unsigned long count, u64 *max_size,
int *reset_type)
{
struct xen_platform_op op = INIT_EFI_OP(query_capsule_capabilities);
if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION)
return EFI_UNSUPPORTED;
set_xen_guest_handle(efi_data(op).u.query_capsule_capabilities.capsule_header_array,
capsules);
efi_data(op).u.query_capsule_capabilities.capsule_count = count;
if (HYPERVISOR_platform_op(&op) < 0)
return EFI_UNSUPPORTED;
*max_size = efi_data(op).u.query_capsule_capabilities.max_capsule_size;
*reset_type = efi_data(op).u.query_capsule_capabilities.reset_type;
return efi_data(op).status;
}
efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
efi_char16_t *name,
efi_guid_t *vendor)
{
struct xen_platform_op op = INIT_EFI_OP(get_next_variable_name);
efi_data(op).u.get_next_variable_name.size = *name_size;
set_xen_guest_handle(efi_data(op).u.get_next_variable_name.name, name);
BUILD_BUG_ON(sizeof(*vendor) !=
sizeof(efi_data(op).u.get_next_variable_name.vendor_guid));
memcpy(&efi_data(op).u.get_next_variable_name.vendor_guid, vendor,
sizeof(*vendor));
if (HYPERVISOR_platform_op(&op) < 0)
return EFI_UNSUPPORTED;
*name_size = efi_data(op).u.get_next_variable_name.size;
memcpy(vendor, &efi_data(op).u.get_next_variable_name.vendor_guid,
sizeof(*vendor));
return efi_data(op).status;
}
static int do_microcode_update (const void __user *ubuf, size_t len)
{
int err;
void *kbuf;
kbuf = vmalloc(len);
if (!kbuf)
return -ENOMEM;
if (copy_from_user(kbuf, ubuf, len) == 0) {
struct xen_platform_op op;
op.cmd = XENPF_microcode_update;
set_xen_guest_handle(op.u.microcode.data, kbuf);
op.u.microcode.length = len;
err = HYPERVISOR_platform_op(&op);
} else
err = -EFAULT;
vfree(kbuf);
return err;
}
static int
privcmd_HYPERVISOR_platform_op(xen_platform_op_t *opp)
{
import_export_t op_ie, sub_ie, sub2_ie;
xen_platform_op_t op;
int error;
if (import_buffer(&op_ie, opp, &op, sizeof (op), IE_IMPEXP) != 0)
return (-X_EFAULT);
sub_ie = null_ie;
sub2_ie = null_ie;
/*
* Check this first because our wrapper will forcibly overwrite it.
*/
if (op.interface_version != XENPF_INTERFACE_VERSION) {
error = -X_EACCES;
export_buffer(&op_ie, &error);
return (error);
}
/*
* Now handle any platform ops with embedded pointers elsewhere
* in the user address space that also need to be tacked down
* while the hypervisor futzes with them.
*/
switch (op.cmd) {
case XENPF_settime:
case XENPF_add_memtype:
case XENPF_del_memtype:
case XENPF_read_memtype:
case XENPF_platform_quirk:
case XENPF_enter_acpi_sleep:
case XENPF_change_freq:
case XENPF_panic_init:
break;
case XENPF_microcode_update:
error = import_handle(&sub_ie, &op.u.microcode.data,
op.u.microcode.length, IE_IMPORT);
break;
case XENPF_getidletime:
error = import_handle(&sub_ie, &op.u.getidletime.cpumap_bitmap,
op.u.getidletime.cpumap_nr_cpus, IE_IMPEXP);
if (error != 0)
break;
error = import_handle(&sub2_ie, &op.u.getidletime.idletime,
op.u.getidletime.cpumap_nr_cpus * sizeof (uint64_t),
IE_EXPORT);
break;
case XENPF_set_processor_pminfo: {
size_t s;
switch (op.u.set_pminfo.type) {
case XEN_PM_PX:
s = op.u.set_pminfo.u.perf.state_count *
sizeof (xen_processor_px_t);
if (op.u.set_pminfo.u.perf.flags & XEN_PX_PSS) {
error = import_handle(&sub_ie,
&op.u.set_pminfo.u.perf.states, s,
IE_IMPORT);
}
break;
case XEN_PM_CX:
s = op.u.set_pminfo.u.power.count *
sizeof (xen_processor_cx_t);
error = import_handle(&sub_ie,
&op.u.set_pminfo.u.power.states, s, IE_IMPORT);
break;
case XEN_PM_TX:
break;
default:
error = -X_EINVAL;
break;
}
break;
}
case XENPF_firmware_info: {
uint16_t len;
void *uaddr;
switch (op.u.firmware_info.type) {
case XEN_FW_DISK_INFO:
/*
* Ugh.. another hokey interface. The first 16 bits
* of the buffer are also used as the (input) length.
*/
uaddr = uaddr_from_handle(
&op.u.firmware_info.u.disk_info.edd_params);
error = ddi_copyin(uaddr, &len, sizeof (len), 0);
if (error != 0)
break;
error = import_handle(&sub_ie,
&op.u.firmware_info.u.disk_info.edd_params, len,
IE_IMPEXP);
break;
case XEN_FW_VBEDDC_INFO:
error = import_handle(&sub_ie,
&op.u.firmware_info.u.vbeddc_info.edid, 128,
IE_EXPORT);
break;
case XEN_FW_DISK_MBR_SIGNATURE:
default:
break;
}
break;
}
default:
/* FIXME: see this with non-existed ID 38 ???? */
#ifdef DEBUG
printf("unrecognized HYPERVISOR_platform_op %d pid %d\n",
op.cmd, curthread->t_procp->p_pid);
#endif
return (-X_EINVAL);
}
if (error == 0)
error = HYPERVISOR_platform_op(&op);
export_buffer(&op_ie, &error);
export_buffer(&sub_ie, &error);
export_buffer(&sub2_ie, &error);
return (error);
}
static int xen_cx_notifier(struct acpi_processor *pr, int action)
{
int ret, count = 0, i;
xen_platform_op_t op = {
.cmd = XENPF_set_processor_pminfo,
.interface_version = XENPF_INTERFACE_VERSION,
.u.set_pminfo.id = pr->acpi_id,
.u.set_pminfo.type = XEN_PM_CX,
};
struct xen_processor_cx *data, *buf;
struct acpi_processor_cx *cx;
/* Convert to Xen defined structure and hypercall */
buf = kzalloc(pr->power.count * sizeof(struct xen_processor_cx),
GFP_KERNEL);
if (!buf)
return -ENOMEM;
data = buf;
for (i = 1; i <= pr->power.count; i++) {
cx = &pr->power.states[i];
/* Skip invalid cstate entry */
if (!cx->valid)
continue;
data->type = cx->type;
data->latency = cx->latency;
data->power = cx->power;
data->reg.space_id = cx->reg.space_id;
data->reg.bit_width = cx->reg.bit_width;
data->reg.bit_offset = cx->reg.bit_offset;
data->reg.access_size = cx->reg.reserved;
data->reg.address = cx->reg.address;
/* Get dependency relationships */
if (cx->csd_count) {
printk("Wow! _CSD is found. Not support for now!\n");
kfree(buf);
return -EINVAL;
} else {
data->dpcnt = 0;
set_xen_guest_handle(data->dp, NULL);
}
data++;
count++;
}
if (!count) {
printk("No available Cx info for cpu %d\n", pr->acpi_id);
kfree(buf);
return -EINVAL;
}
op.u.set_pminfo.u.power.count = count;
op.u.set_pminfo.u.power.flags.bm_control = pr->flags.bm_control;
op.u.set_pminfo.u.power.flags.bm_check = pr->flags.bm_check;
op.u.set_pminfo.u.power.flags.has_cst = pr->flags.has_cst;
op.u.set_pminfo.u.power.flags.power_setup_done = pr->flags.power_setup_done;
set_xen_guest_handle(op.u.set_pminfo.u.power.states, buf);
ret = HYPERVISOR_platform_op(&op);
kfree(buf);
return ret;
}
static int xen_px_notifier(struct acpi_processor *pr, int action)
{
int ret = -EINVAL;
xen_platform_op_t op = {
.cmd = XENPF_set_processor_pminfo,
.interface_version = XENPF_INTERFACE_VERSION,
.u.set_pminfo.id = pr->acpi_id,
.u.set_pminfo.type = XEN_PM_PX,
};
struct xen_processor_performance *perf;
struct xen_processor_px *states = NULL;
struct acpi_processor_performance *px;
struct acpi_psd_package *pdomain;
if (!pr)
return -EINVAL;
perf = &op.u.set_pminfo.u.perf;
px = pr->performance;
if (!px)
return -EINVAL;
switch(action) {
case PROCESSOR_PM_CHANGE:
/* ppc dynamic handle */
perf->flags = XEN_PX_PPC;
perf->platform_limit = pr->performance_platform_limit;
ret = HYPERVISOR_platform_op(&op);
break;
case PROCESSOR_PM_INIT:
/* px normal init */
perf->flags = XEN_PX_PPC |
XEN_PX_PCT |
XEN_PX_PSS |
XEN_PX_PSD;
/* ppc */
perf->platform_limit = pr->performance_platform_limit;
/* pct */
xen_convert_pct_reg(&perf->control_register, &px->control_register);
xen_convert_pct_reg(&perf->status_register, &px->status_register);
/* pss */
perf->state_count = px->state_count;
states = kzalloc(px->state_count*sizeof(xen_processor_px_t),GFP_KERNEL);
if (!states)
return -ENOMEM;
xen_convert_pss_states(states, px->states, px->state_count);
set_xen_guest_handle(perf->states, states);
/* psd */
pdomain = &px->domain_info;
xen_convert_psd_pack(&perf->domain_info, pdomain);
if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ALL)
perf->shared_type = CPUFREQ_SHARED_TYPE_ALL;
else if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ANY)
perf->shared_type = CPUFREQ_SHARED_TYPE_ANY;
else if (pdomain->coord_type == DOMAIN_COORD_TYPE_HW_ALL)
perf->shared_type = CPUFREQ_SHARED_TYPE_HW;
else {
ret = -ENODEV;
kfree(states);
break;
}
ret = HYPERVISOR_platform_op(&op);
kfree(states);
break;
default:
break;
}
return ret;
}
static int xen_tx_notifier(struct acpi_processor *pr, int action)
{
return -EINVAL;
}
static int xen_hotplug_notifier(struct acpi_processor *pr, int event)
{
return -EINVAL;
}
static struct processor_extcntl_ops xen_extcntl_ops = {
.hotplug = xen_hotplug_notifier,
};
void arch_acpi_processor_init_extcntl(const struct processor_extcntl_ops **ops)
{
unsigned int pmbits = (xen_start_info->flags & SIF_PM_MASK) >> 8;
if (!pmbits)
return;
if (pmbits & XEN_PROCESSOR_PM_CX)
xen_extcntl_ops.pm_ops[PM_TYPE_IDLE] = xen_cx_notifier;
if (pmbits & XEN_PROCESSOR_PM_PX)
xen_extcntl_ops.pm_ops[PM_TYPE_PERF] = xen_px_notifier;
if (pmbits & XEN_PROCESSOR_PM_TX)
xen_extcntl_ops.pm_ops[PM_TYPE_THR] = xen_tx_notifier;
*ops = &xen_extcntl_ops;
}