Add events for tracing accesses to memory hotplug IO ports. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
161 lines
5 KiB
C
161 lines
5 KiB
C
#include "hw/acpi/memory_hotplug.h"
|
|
#include "hw/acpi/pc-hotplug.h"
|
|
#include "hw/mem/pc-dimm.h"
|
|
#include "hw/boards.h"
|
|
#include "trace.h"
|
|
|
|
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_int(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_int(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_int(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_int(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_int(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;
|
|
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;
|
|
|
|
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: report async error */
|
|
/* TODO: implement memory removal on guest signal */
|
|
break;
|
|
case 0x14:
|
|
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);
|
|
}
|
|
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)
|
|
{
|
|
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,
|
|
"apci-mem-hotplug", ACPI_MEMORY_HOTPLUG_IO_LEN);
|
|
memory_region_add_subregion(as, ACPI_MEMORY_HOTPLUG_BASE, &state->io);
|
|
}
|
|
|
|
void acpi_memory_plug_cb(ACPIREGS *ar, qemu_irq irq, MemHotplugState *mem_st,
|
|
DeviceState *dev, Error **errp)
|
|
{
|
|
MemStatus *mdev;
|
|
Error *local_err = NULL;
|
|
int slot = object_property_get_int(OBJECT(dev), "slot", &local_err);
|
|
|
|
if (local_err) {
|
|
error_propagate(errp, local_err);
|
|
return;
|
|
}
|
|
|
|
if (slot >= mem_st->dev_count) {
|
|
char *dev_path = object_get_canonical_path(OBJECT(dev));
|
|
error_setg(errp, "acpi_memory_plug_cb: "
|
|
"device [%s] returned invalid memory slot[%d]",
|
|
dev_path, slot);
|
|
g_free(dev_path);
|
|
return;
|
|
}
|
|
|
|
mdev = &mem_st->devs[slot];
|
|
mdev->dimm = dev;
|
|
mdev->is_enabled = true;
|
|
mdev->is_inserting = true;
|
|
|
|
/* do ACPI magic */
|
|
ar->gpe.sts[0] |= ACPI_MEMORY_HOTPLUG_STATUS;
|
|
acpi_update_sci(ar, irq);
|
|
return;
|
|
}
|