95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/*
|
|
* CXL host parameter parsing routines
|
|
*
|
|
* Copyright (c) 2022 Huawei
|
|
* Modeled loosely on the NUMA options handling in hw/core/numa.c
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu/units.h"
|
|
#include "qemu/bitmap.h"
|
|
#include "qemu/error-report.h"
|
|
#include "qapi/error.h"
|
|
#include "sysemu/qtest.h"
|
|
#include "hw/boards.h"
|
|
|
|
#include "qapi/qapi-visit-machine.h"
|
|
#include "hw/cxl/cxl.h"
|
|
|
|
void cxl_fixed_memory_window_config(MachineState *ms,
|
|
CXLFixedMemoryWindowOptions *object,
|
|
Error **errp)
|
|
{
|
|
CXLFixedWindow *fw = g_malloc0(sizeof(*fw));
|
|
strList *target;
|
|
int i;
|
|
|
|
for (target = object->targets; target; target = target->next) {
|
|
fw->num_targets++;
|
|
}
|
|
|
|
fw->enc_int_ways = cxl_interleave_ways_enc(fw->num_targets, errp);
|
|
if (*errp) {
|
|
return;
|
|
}
|
|
|
|
fw->targets = g_malloc0_n(fw->num_targets, sizeof(*fw->targets));
|
|
for (i = 0, target = object->targets; target; i++, target = target->next) {
|
|
/* This link cannot be resolved yet, so stash the name for now */
|
|
fw->targets[i] = g_strdup(target->value);
|
|
}
|
|
|
|
if (object->size % (256 * MiB)) {
|
|
error_setg(errp,
|
|
"Size of a CXL fixed memory window must my a multiple of 256MiB");
|
|
return;
|
|
}
|
|
fw->size = object->size;
|
|
|
|
if (object->has_interleave_granularity) {
|
|
fw->enc_int_gran =
|
|
cxl_interleave_granularity_enc(object->interleave_granularity,
|
|
errp);
|
|
if (*errp) {
|
|
return;
|
|
}
|
|
} else {
|
|
/* Default to 256 byte interleave */
|
|
fw->enc_int_gran = 0;
|
|
}
|
|
|
|
ms->cxl_devices_state->fixed_windows =
|
|
g_list_append(ms->cxl_devices_state->fixed_windows, fw);
|
|
|
|
return;
|
|
}
|
|
|
|
void cxl_fixed_memory_window_link_targets(Error **errp)
|
|
{
|
|
MachineState *ms = MACHINE(qdev_get_machine());
|
|
|
|
if (ms->cxl_devices_state && ms->cxl_devices_state->fixed_windows) {
|
|
GList *it;
|
|
|
|
for (it = ms->cxl_devices_state->fixed_windows; it; it = it->next) {
|
|
CXLFixedWindow *fw = it->data;
|
|
int i;
|
|
|
|
for (i = 0; i < fw->num_targets; i++) {
|
|
Object *o;
|
|
bool ambig;
|
|
|
|
o = object_resolve_path_type(fw->targets[i],
|
|
TYPE_PXB_CXL_DEVICE,
|
|
&ambig);
|
|
if (!o) {
|
|
error_setg(errp, "Could not resolve CXLFM target %s",
|
|
fw->targets[i]);
|
|
return;
|
|
}
|
|
fw->target_hbs[i] = PXB_CXL_DEV(o);
|
|
}
|
|
}
|
|
}
|
|
}
|