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99b2c06225
qemu/hw/acpi/memory_hotplug.c
Daniel Henrique Barboza 99b2c06225 memory_hotplug.c: handle dev->id = NULL in acpi_memory_hotplug_write() 
qapi_event_send_mem_unplug_error() deals with @device being NULL by
replacing it with an empty string ("") when emitting the event. Aside
from the fact that this behavior (qapi visitor mapping NULL pointer to
"") can be patched/changed someday, there's also the lack of utility
that the event brings to listeners, e.g. "a memory unplug error happened
somewhere".

In theory we should just avoit emitting this event at all if dev->id is
NULL, but this would be an incompatible change to existing guests.
Instead, let's make the forementioned behavior explicit: if dev->id is
NULL, pass an empty string to qapi_event_send_mem_unplug_error().

Suggested-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20210907004755.424931-2-danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2021-09-29 19:37:39 +10:00

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#include "qemu/osdep.h"
#include "hw/acpi/memory_hotplug.h"
#include "hw/acpi/pc-hotplug.h"
#include "hw/mem/pc-dimm.h"
#include "hw/qdev-core.h"
#include "migration/vmstate.h"
#include "trace.h"
#include "qapi/error.h"
#include "qapi/qapi-events-acpi.h"
#include "qapi/qapi-events-machine.h"
#define MEMORY_SLOTS_NUMBER "MDNR"
#define MEMORY_HOTPLUG_IO_REGION "HPMR"
#define MEMORY_SLOT_ADDR_LOW "MRBL"
#define MEMORY_SLOT_ADDR_HIGH "MRBH"
#define MEMORY_SLOT_SIZE_LOW "MRLL"
#define MEMORY_SLOT_SIZE_HIGH "MRLH"
#define MEMORY_SLOT_PROXIMITY "MPX"
#define MEMORY_SLOT_ENABLED "MES"
#define MEMORY_SLOT_INSERT_EVENT "MINS"
#define MEMORY_SLOT_REMOVE_EVENT "MRMV"
#define MEMORY_SLOT_EJECT "MEJ"
#define MEMORY_SLOT_SLECTOR "MSEL"
#define MEMORY_SLOT_OST_EVENT "MOEV"
#define MEMORY_SLOT_OST_STATUS "MOSC"
#define MEMORY_SLOT_LOCK "MLCK"
#define MEMORY_SLOT_STATUS_METHOD "MRST"
#define MEMORY_SLOT_CRS_METHOD "MCRS"
#define MEMORY_SLOT_OST_METHOD "MOST"
#define MEMORY_SLOT_PROXIMITY_METHOD "MPXM"
#define MEMORY_SLOT_EJECT_METHOD "MEJ0"
#define MEMORY_SLOT_NOTIFY_METHOD "MTFY"
#define MEMORY_HOTPLUG_DEVICE "MHPD"
static ACPIOSTInfo *acpi_memory_device_status(int slot, MemStatus *mdev)
{
ACPIOSTInfo *info = g_new0(ACPIOSTInfo, 1);
info->slot_type = ACPI_SLOT_TYPE_DIMM;
info->slot = g_strdup_printf("%d", slot);
info->source = mdev->ost_event;
info->status = mdev->ost_status;
if (mdev->dimm) {
DeviceState *dev = DEVICE(mdev->dimm);
if (dev->id) {
info->device = g_strdup(dev->id);
info->has_device = true;
}
}
return info;
}
void acpi_memory_ospm_status(MemHotplugState *mem_st, ACPIOSTInfoList ***list)
{
ACPIOSTInfoList ***tail = list;
int i;
for (i = 0; i < mem_st->dev_count; i++) {
QAPI_LIST_APPEND(*tail,
acpi_memory_device_status(i, &mem_st->devs[i]));
}
}
static uint64_t acpi_memory_hotplug_read(void *opaque, hwaddr addr,
unsigned int size)
{
uint32_t val = 0;
MemHotplugState *mem_st = opaque;
MemStatus *mdev;
Object *o;
if (mem_st->selector >= mem_st->dev_count) {
trace_mhp_acpi_invalid_slot_selected(mem_st->selector);
return 0;
}
mdev = &mem_st->devs[mem_st->selector];
o = OBJECT(mdev->dimm);
switch (addr) {
case 0x0: /* Lo part of phys address where DIMM is mapped */
val = o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) : 0;
trace_mhp_acpi_read_addr_lo(mem_st->selector, val);
break;
case 0x4: /* Hi part of phys address where DIMM is mapped */
val =
o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) >> 32 : 0;
trace_mhp_acpi_read_addr_hi(mem_st->selector, val);
break;
case 0x8: /* Lo part of DIMM size */
val = o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) : 0;
trace_mhp_acpi_read_size_lo(mem_st->selector, val);
break;
case 0xc: /* Hi part of DIMM size */
val =
o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) >> 32 : 0;
trace_mhp_acpi_read_size_hi(mem_st->selector, val);
break;
case 0x10: /* node proximity for _PXM method */
val = o ? object_property_get_uint(o, PC_DIMM_NODE_PROP, NULL) : 0;
trace_mhp_acpi_read_pxm(mem_st->selector, val);
break;
case 0x14: /* pack and return is_* fields */
val |= mdev->is_enabled ? 1 : 0;
val |= mdev->is_inserting ? 2 : 0;
val |= mdev->is_removing ? 4 : 0;
trace_mhp_acpi_read_flags(mem_st->selector, val);
break;
default:
val = ~0;
break;
}
return val;
}
static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data,
unsigned int size)
{
MemHotplugState *mem_st = opaque;
MemStatus *mdev;
ACPIOSTInfo *info;
DeviceState *dev = NULL;
HotplugHandler *hotplug_ctrl = NULL;
Error *local_err = NULL;
if (!mem_st->dev_count) {
return;
}
if (addr) {
if (mem_st->selector >= mem_st->dev_count) {
trace_mhp_acpi_invalid_slot_selected(mem_st->selector);
return;
}
}
switch (addr) {
case 0x0: /* DIMM slot selector */
mem_st->selector = data;
trace_mhp_acpi_write_slot(mem_st->selector);
break;
case 0x4: /* _OST event */
mdev = &mem_st->devs[mem_st->selector];
if (data == 1) {
/* TODO: handle device insert OST event */
} else if (data == 3) {
/* TODO: handle device remove OST event */
}
mdev->ost_event = data;
trace_mhp_acpi_write_ost_ev(mem_st->selector, mdev->ost_event);
break;
case 0x8: /* _OST status */
mdev = &mem_st->devs[mem_st->selector];
mdev->ost_status = data;
trace_mhp_acpi_write_ost_status(mem_st->selector, mdev->ost_status);
/* TODO: implement memory removal on guest signal */
info = acpi_memory_device_status(mem_st->selector, mdev);
qapi_event_send_acpi_device_ost(info);
qapi_free_ACPIOSTInfo(info);
break;
case 0x14: /* set is_* fields */
mdev = &mem_st->devs[mem_st->selector];
if (data & 2) { /* clear insert event */
mdev->is_inserting = false;
trace_mhp_acpi_clear_insert_evt(mem_st->selector);
} else if (data & 4) {
mdev->is_removing = false;
trace_mhp_acpi_clear_remove_evt(mem_st->selector);
} else if (data & 8) {
if (!mdev->is_enabled) {
trace_mhp_acpi_ejecting_invalid_slot(mem_st->selector);
break;
}
dev = DEVICE(mdev->dimm);
hotplug_ctrl = qdev_get_hotplug_handler(dev);
/* call pc-dimm unplug cb */
hotplug_handler_unplug(hotplug_ctrl, dev, &local_err);
if (local_err) {
trace_mhp_acpi_pc_dimm_delete_failed(mem_st->selector);
qapi_event_send_mem_unplug_error(dev->id ? : "",
error_get_pretty(local_err));
error_free(local_err);
break;
}
object_unparent(OBJECT(dev));
trace_mhp_acpi_pc_dimm_deleted(mem_st->selector);
}
break;
default:
break;
}
}
static const MemoryRegionOps acpi_memory_hotplug_ops = {
.read = acpi_memory_hotplug_read,
.write = acpi_memory_hotplug_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.valid = {
.min_access_size = 1,
.max_access_size = 4,
},
};
void acpi_memory_hotplug_init(MemoryRegion *as, Object *owner,
MemHotplugState *state, hwaddr io_base)
{
MachineState *machine = MACHINE(qdev_get_machine());
state->dev_count = machine->ram_slots;
if (!state->dev_count) {
return;
}
state->devs = g_malloc0(sizeof(*state->devs) * state->dev_count);
memory_region_init_io(&state->io, owner, &acpi_memory_hotplug_ops, state,
"acpi-mem-hotplug", MEMORY_HOTPLUG_IO_LEN);
memory_region_add_subregion(as, io_base, &state->io);
}
/**
* acpi_memory_slot_status:
* @mem_st: memory hotplug state
* @dev: device
* @errp: set in case of an error
*
* Obtain a single memory slot status.
*
* This function will be called by memory unplug request cb and unplug cb.
*/
static MemStatus *
acpi_memory_slot_status(MemHotplugState *mem_st,
DeviceState *dev, Error **errp)
{
Error *local_err = NULL;
int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP,
&local_err);
if (local_err) {
error_propagate(errp, local_err);
return NULL;
}
if (slot >= mem_st->dev_count) {
char *dev_path = object_get_canonical_path(OBJECT(dev));
error_setg(errp, "acpi_memory_slot_status: "
"device [%s] returned invalid memory slot[%d]",
dev_path, slot);
g_free(dev_path);
return NULL;
}
return &mem_st->devs[slot];
}
void acpi_memory_plug_cb(HotplugHandler *hotplug_dev, MemHotplugState *mem_st,
DeviceState *dev, Error **errp)
{
MemStatus *mdev;
DeviceClass *dc = DEVICE_GET_CLASS(dev);
if (!dc->hotpluggable) {
return;
}
mdev = acpi_memory_slot_status(mem_st, dev, errp);
if (!mdev) {
return;
}
mdev->dimm = dev;
mdev->is_enabled = true;
if (dev->hotplugged) {
mdev->is_inserting = true;
acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS);
}
}
void acpi_memory_unplug_request_cb(HotplugHandler *hotplug_dev,
MemHotplugState *mem_st,
DeviceState *dev, Error **errp)
{
MemStatus *mdev;
mdev = acpi_memory_slot_status(mem_st, dev, errp);
if (!mdev) {
return;
}
mdev->is_removing = true;
acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS);
}
void acpi_memory_unplug_cb(MemHotplugState *mem_st,
DeviceState *dev, Error **errp)
{
MemStatus *mdev;
mdev = acpi_memory_slot_status(mem_st, dev, errp);
if (!mdev) {
return;
}
mdev->is_enabled = false;
mdev->dimm = NULL;
}
static const VMStateDescription vmstate_memhp_sts = {
.name = "memory hotplug device state",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField[]) {
VMSTATE_BOOL(is_enabled, MemStatus),
VMSTATE_BOOL(is_inserting, MemStatus),
VMSTATE_UINT32(ost_event, MemStatus),
VMSTATE_UINT32(ost_status, MemStatus),
VMSTATE_END_OF_LIST()
}
};
const VMStateDescription vmstate_memory_hotplug = {
.name = "memory hotplug state",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(selector, MemHotplugState),
VMSTATE_STRUCT_VARRAY_POINTER_UINT32(devs, MemHotplugState, dev_count,
vmstate_memhp_sts, MemStatus),
VMSTATE_END_OF_LIST()
}
};
void build_memory_hotplug_aml(Aml *table, uint32_t nr_mem,
const char *res_root,
const char *event_handler_method,
AmlRegionSpace rs, hwaddr memhp_io_base)
{
int i;
Aml *ifctx;
Aml *method;
Aml *dev_container;
Aml *mem_ctrl_dev;
char *mhp_res_path;
mhp_res_path = g_strdup_printf("%s." MEMORY_HOTPLUG_DEVICE, res_root);
mem_ctrl_dev = aml_device("%s", mhp_res_path);
{
Aml *crs;
aml_append(mem_ctrl_dev, aml_name_decl("_HID", aml_string("PNP0A06")));
aml_append(mem_ctrl_dev,
aml_name_decl("_UID", aml_string("Memory hotplug resources")));
crs = aml_resource_template();
if (rs == AML_SYSTEM_IO) {
aml_append(crs,
aml_io(AML_DECODE16, memhp_io_base, memhp_io_base, 0,
MEMORY_HOTPLUG_IO_LEN)
);
} else {
aml_append(crs, aml_memory32_fixed(memhp_io_base,
MEMORY_HOTPLUG_IO_LEN, AML_READ_WRITE));
}
aml_append(mem_ctrl_dev, aml_name_decl("_CRS", crs));
aml_append(mem_ctrl_dev, aml_operation_region(
MEMORY_HOTPLUG_IO_REGION, rs,
aml_int(memhp_io_base), MEMORY_HOTPLUG_IO_LEN)
);
}
aml_append(table, mem_ctrl_dev);
dev_container = aml_device(MEMORY_DEVICES_CONTAINER);
{
Aml *field;
Aml *one = aml_int(1);
Aml *zero = aml_int(0);
Aml *ret_val = aml_local(0);
Aml *slot_arg0 = aml_arg(0);
Aml *slots_nr = aml_name(MEMORY_SLOTS_NUMBER);
Aml *ctrl_lock = aml_name(MEMORY_SLOT_LOCK);
Aml *slot_selector = aml_name(MEMORY_SLOT_SLECTOR);
char *mmio_path = g_strdup_printf("%s." MEMORY_HOTPLUG_IO_REGION,
mhp_res_path);
aml_append(dev_container, aml_name_decl("_HID", aml_string("PNP0A06")));
aml_append(dev_container,
aml_name_decl("_UID", aml_string("DIMM devices")));
assert(nr_mem <= ACPI_MAX_RAM_SLOTS);
aml_append(dev_container,
aml_name_decl(MEMORY_SLOTS_NUMBER, aml_int(nr_mem))
);
field = aml_field(mmio_path, AML_DWORD_ACC,
AML_NOLOCK, AML_PRESERVE);
aml_append(field, /* read only */
aml_named_field(MEMORY_SLOT_ADDR_LOW, 32));
aml_append(field, /* read only */
aml_named_field(MEMORY_SLOT_ADDR_HIGH, 32));
aml_append(field, /* read only */
aml_named_field(MEMORY_SLOT_SIZE_LOW, 32));
aml_append(field, /* read only */
aml_named_field(MEMORY_SLOT_SIZE_HIGH, 32));
aml_append(field, /* read only */
aml_named_field(MEMORY_SLOT_PROXIMITY, 32));
aml_append(dev_container, field);
field = aml_field(mmio_path, AML_BYTE_ACC,
AML_NOLOCK, AML_WRITE_AS_ZEROS);
aml_append(field, aml_reserved_field(160 /* bits, Offset(20) */));
aml_append(field, /* 1 if enabled, read only */
aml_named_field(MEMORY_SLOT_ENABLED, 1));
aml_append(field,
/*(read) 1 if has a insert event. (write) 1 to clear event */
aml_named_field(MEMORY_SLOT_INSERT_EVENT, 1));
aml_append(field,
/* (read) 1 if has a remove event. (write) 1 to clear event */
aml_named_field(MEMORY_SLOT_REMOVE_EVENT, 1));
aml_append(field,
/* initiates device eject, write only */
aml_named_field(MEMORY_SLOT_EJECT, 1));
aml_append(dev_container, field);
field = aml_field(mmio_path, AML_DWORD_ACC,
AML_NOLOCK, AML_PRESERVE);
aml_append(field, /* DIMM selector, write only */
aml_named_field(MEMORY_SLOT_SLECTOR, 32));
aml_append(field, /* _OST event code, write only */
aml_named_field(MEMORY_SLOT_OST_EVENT, 32));
aml_append(field, /* _OST status code, write only */
aml_named_field(MEMORY_SLOT_OST_STATUS, 32));
aml_append(dev_container, field);
g_free(mmio_path);
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
ifctx = aml_if(aml_equal(slots_nr, zero));
{
aml_append(ifctx, aml_return(zero));
}
aml_append(method, ifctx);
/* present, functioning, decoding, not shown in UI */
aml_append(method, aml_return(aml_int(0xB)));
aml_append(dev_container, method);
aml_append(dev_container, aml_mutex(MEMORY_SLOT_LOCK, 0));
method = aml_method(MEMORY_SLOT_SCAN_METHOD, 0, AML_NOTSERIALIZED);
{
Aml *else_ctx;
Aml *while_ctx;
Aml *idx = aml_local(0);
Aml *eject_req = aml_int(3);
Aml *dev_chk = aml_int(1);
ifctx = aml_if(aml_equal(slots_nr, zero));
{
aml_append(ifctx, aml_return(zero));
}
aml_append(method, ifctx);
aml_append(method, aml_store(zero, idx));
aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
/* build AML that:
* loops over all slots and Notifies DIMMs with
* Device Check or Eject Request notifications if
* slot has corresponding status bit set and clears
* slot status.
*/
while_ctx = aml_while(aml_lless(idx, slots_nr));
{
Aml *ins_evt = aml_name(MEMORY_SLOT_INSERT_EVENT);
Aml *rm_evt = aml_name(MEMORY_SLOT_REMOVE_EVENT);
aml_append(while_ctx, aml_store(idx, slot_selector));
ifctx = aml_if(aml_equal(ins_evt, one));
{
aml_append(ifctx,
aml_call2(MEMORY_SLOT_NOTIFY_METHOD,
idx, dev_chk));
aml_append(ifctx, aml_store(one, ins_evt));
}
aml_append(while_ctx, ifctx);
else_ctx = aml_else();
ifctx = aml_if(aml_equal(rm_evt, one));
{
aml_append(ifctx,
aml_call2(MEMORY_SLOT_NOTIFY_METHOD,
idx, eject_req));
aml_append(ifctx, aml_store(one, rm_evt));
}
aml_append(else_ctx, ifctx);
aml_append(while_ctx, else_ctx);
aml_append(while_ctx, aml_add(idx, one, idx));
}
aml_append(method, while_ctx);
aml_append(method, aml_release(ctrl_lock));
aml_append(method, aml_return(one));
}
aml_append(dev_container, method);
method = aml_method(MEMORY_SLOT_STATUS_METHOD, 1, AML_NOTSERIALIZED);
{
Aml *slot_enabled = aml_name(MEMORY_SLOT_ENABLED);
aml_append(method, aml_store(zero, ret_val));
aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
aml_append(method,
aml_store(aml_to_integer(slot_arg0), slot_selector));
ifctx = aml_if(aml_equal(slot_enabled, one));
{
aml_append(ifctx, aml_store(aml_int(0xF), ret_val));
}
aml_append(method, ifctx);
aml_append(method, aml_release(ctrl_lock));
aml_append(method, aml_return(ret_val));
}
aml_append(dev_container, method);
method = aml_method(MEMORY_SLOT_CRS_METHOD, 1, AML_SERIALIZED);
{
Aml *mr64 = aml_name("MR64");
Aml *mr32 = aml_name("MR32");
Aml *crs_tmpl = aml_resource_template();
Aml *minl = aml_name("MINL");
Aml *minh = aml_name("MINH");
Aml *maxl = aml_name("MAXL");
Aml *maxh = aml_name("MAXH");
Aml *lenl = aml_name("LENL");
Aml *lenh = aml_name("LENH");
aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
aml_append(method, aml_store(aml_to_integer(slot_arg0),
slot_selector));
aml_append(crs_tmpl,
aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
AML_CACHEABLE, AML_READ_WRITE,
0, 0x0, 0xFFFFFFFFFFFFFFFEULL, 0,
0xFFFFFFFFFFFFFFFFULL));
aml_append(method, aml_name_decl("MR64", crs_tmpl));
aml_append(method,
aml_create_dword_field(mr64, aml_int(14), "MINL"));
aml_append(method,
aml_create_dword_field(mr64, aml_int(18), "MINH"));
aml_append(method,
aml_create_dword_field(mr64, aml_int(38), "LENL"));
aml_append(method,
aml_create_dword_field(mr64, aml_int(42), "LENH"));
aml_append(method,
aml_create_dword_field(mr64, aml_int(22), "MAXL"));
aml_append(method,
aml_create_dword_field(mr64, aml_int(26), "MAXH"));
aml_append(method,
aml_store(aml_name(MEMORY_SLOT_ADDR_HIGH), minh));
aml_append(method,
aml_store(aml_name(MEMORY_SLOT_ADDR_LOW), minl));
aml_append(method,
aml_store(aml_name(MEMORY_SLOT_SIZE_HIGH), lenh));
aml_append(method,
aml_store(aml_name(MEMORY_SLOT_SIZE_LOW), lenl));
/* 64-bit math: MAX = MIN + LEN - 1 */
aml_append(method, aml_add(minl, lenl, maxl));
aml_append(method, aml_add(minh, lenh, maxh));
ifctx = aml_if(aml_lless(maxl, minl));
{
aml_append(ifctx, aml_add(maxh, one, maxh));
}
aml_append(method, ifctx);
ifctx = aml_if(aml_lless(maxl, one));
{
aml_append(ifctx, aml_subtract(maxh, one, maxh));
}
aml_append(method, ifctx);
aml_append(method, aml_subtract(maxl, one, maxl));
/* return 32-bit _CRS if addr/size is in low mem */
/* TODO: remove it since all hotplugged DIMMs are in high mem */
ifctx = aml_if(aml_equal(maxh, zero));
{
crs_tmpl = aml_resource_template();
aml_append(crs_tmpl,
aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED,
AML_MAX_FIXED, AML_CACHEABLE,
AML_READ_WRITE,
0, 0x0, 0xFFFFFFFE, 0,
0xFFFFFFFF));
aml_append(ifctx, aml_name_decl("MR32", crs_tmpl));
aml_append(ifctx,
aml_create_dword_field(mr32, aml_int(10), "MIN"));
aml_append(ifctx,
aml_create_dword_field(mr32, aml_int(14), "MAX"));
aml_append(ifctx,
aml_create_dword_field(mr32, aml_int(22), "LEN"));
aml_append(ifctx, aml_store(minl, aml_name("MIN")));
aml_append(ifctx, aml_store(maxl, aml_name("MAX")));
aml_append(ifctx, aml_store(lenl, aml_name("LEN")));
aml_append(ifctx, aml_release(ctrl_lock));
aml_append(ifctx, aml_return(mr32));
}
aml_append(method, ifctx);
aml_append(method, aml_release(ctrl_lock));
aml_append(method, aml_return(mr64));
}
aml_append(dev_container, method);
method = aml_method(MEMORY_SLOT_PROXIMITY_METHOD, 1,
AML_NOTSERIALIZED);
{
Aml *proximity = aml_name(MEMORY_SLOT_PROXIMITY);
aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
aml_append(method, aml_store(aml_to_integer(slot_arg0),
slot_selector));
aml_append(method, aml_store(proximity, ret_val));
aml_append(method, aml_release(ctrl_lock));
aml_append(method, aml_return(ret_val));
}
aml_append(dev_container, method);
method = aml_method(MEMORY_SLOT_OST_METHOD, 4, AML_NOTSERIALIZED);
{
Aml *ost_evt = aml_name(MEMORY_SLOT_OST_EVENT);
Aml *ost_status = aml_name(MEMORY_SLOT_OST_STATUS);
aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
aml_append(method, aml_store(aml_to_integer(slot_arg0),
slot_selector));
aml_append(method, aml_store(aml_arg(1), ost_evt));
aml_append(method, aml_store(aml_arg(2), ost_status));
aml_append(method, aml_release(ctrl_lock));
}
aml_append(dev_container, method);
method = aml_method(MEMORY_SLOT_EJECT_METHOD, 2, AML_NOTSERIALIZED);
{
Aml *eject = aml_name(MEMORY_SLOT_EJECT);
aml_append(method, aml_acquire(ctrl_lock, 0xFFFF));
aml_append(method, aml_store(aml_to_integer(slot_arg0),
slot_selector));
aml_append(method, aml_store(one, eject));
aml_append(method, aml_release(ctrl_lock));
}
aml_append(dev_container, method);
/* build memory devices */
for (i = 0; i < nr_mem; i++) {
Aml *dev;
const char *s;
dev = aml_device("MP%02X", i);
aml_append(dev, aml_name_decl("_UID", aml_string("0x%02X", i)));
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C80")));
method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
s = MEMORY_SLOT_CRS_METHOD;
aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
aml_append(dev, method);
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
s = MEMORY_SLOT_STATUS_METHOD;
aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
aml_append(dev, method);
method = aml_method("_PXM", 0, AML_NOTSERIALIZED);
s = MEMORY_SLOT_PROXIMITY_METHOD;
aml_append(method, aml_return(aml_call1(s, aml_name("_UID"))));
aml_append(dev, method);
method = aml_method("_OST", 3, AML_NOTSERIALIZED);
s = MEMORY_SLOT_OST_METHOD;
aml_append(method,
aml_call4(s, aml_name("_UID"), aml_arg(0),
aml_arg(1), aml_arg(2)));
aml_append(dev, method);
method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
s = MEMORY_SLOT_EJECT_METHOD;
aml_append(method,
aml_call2(s, aml_name("_UID"), aml_arg(0)));
aml_append(dev, method);
aml_append(dev_container, dev);
}
/* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) {
* If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ... }
*/
method = aml_method(MEMORY_SLOT_NOTIFY_METHOD, 2, AML_NOTSERIALIZED);
for (i = 0; i < nr_mem; i++) {
ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i)));
aml_append(ifctx,
aml_notify(aml_name("MP%.02X", i), aml_arg(1))
);
aml_append(method, ifctx);
}
aml_append(dev_container, method);
}
aml_append(table, dev_container);
if (event_handler_method) {
method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED);
aml_append(method, aml_call0(MEMORY_DEVICES_CONTAINER "."
MEMORY_SLOT_SCAN_METHOD));
aml_append(table, method);
}
g_free(mhp_res_path);
}
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