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Diffstat (limited to 'hw/i386/pc.c')
-rw-r--r--hw/i386/pc.c89
1 files changed, 59 insertions, 30 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 305d2c0820..7c39c91335 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -75,6 +75,7 @@
#include "acpi-build.h"
#include "hw/mem/pc-dimm.h"
#include "hw/mem/nvdimm.h"
+#include "hw/cxl/cxl.h"
#include "qapi/error.h"
#include "qapi/qapi-visit-common.h"
#include "qapi/qapi-visit-machine.h"
@@ -743,14 +744,6 @@ void pc_machine_done(Notifier *notifier, void *data)
/* update FW_CFG_NB_CPUS to account for -device added CPUs */
fw_cfg_modify_i16(x86ms->fw_cfg, FW_CFG_NB_CPUS, x86ms->boot_cpus);
}
-
-
- if (x86ms->apic_id_limit > 255 && !xen_enabled() &&
- !kvm_irqchip_in_kernel()) {
- error_report("current -smp configuration requires kernel "
- "irqchip support.");
- exit(EXIT_FAILURE);
- }
}
void pc_guest_info_init(PCMachineState *pcms)
@@ -816,6 +809,7 @@ void pc_memory_init(PCMachineState *pcms,
MachineClass *mc = MACHINE_GET_CLASS(machine);
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
X86MachineState *x86ms = X86_MACHINE(pcms);
+ hwaddr cxl_base, cxl_resv_end = 0;
assert(machine->ram_size == x86ms->below_4g_mem_size +
x86ms->above_4g_mem_size);
@@ -905,6 +899,44 @@ void pc_memory_init(PCMachineState *pcms,
&machine->device_memory->mr);
}
+ if (machine->cxl_devices_state->is_enabled) {
+ MemoryRegion *mr = &machine->cxl_devices_state->host_mr;
+ hwaddr cxl_size = MiB;
+
+ if (pcmc->has_reserved_memory && machine->device_memory->base) {
+ cxl_base = machine->device_memory->base;
+ if (!pcmc->broken_reserved_end) {
+ cxl_base += memory_region_size(&machine->device_memory->mr);
+ }
+ } else if (pcms->sgx_epc.size != 0) {
+ cxl_base = sgx_epc_above_4g_end(&pcms->sgx_epc);
+ } else {
+ cxl_base = 0x100000000ULL + x86ms->above_4g_mem_size;
+ }
+
+ e820_add_entry(cxl_base, cxl_size, E820_RESERVED);
+ memory_region_init(mr, OBJECT(machine), "cxl_host_reg", cxl_size);
+ memory_region_add_subregion(system_memory, cxl_base, mr);
+ cxl_resv_end = cxl_base + cxl_size;
+ if (machine->cxl_devices_state->fixed_windows) {
+ hwaddr cxl_fmw_base;
+ GList *it;
+
+ cxl_fmw_base = ROUND_UP(cxl_base + cxl_size, 256 * MiB);
+ for (it = machine->cxl_devices_state->fixed_windows; it; it = it->next) {
+ CXLFixedWindow *fw = it->data;
+
+ fw->base = cxl_fmw_base;
+ memory_region_init_io(&fw->mr, OBJECT(machine), &cfmws_ops, fw,
+ "cxl-fixed-memory-region", fw->size);
+ memory_region_add_subregion(system_memory, fw->base, &fw->mr);
+ e820_add_entry(fw->base, fw->size, E820_RESERVED);
+ cxl_fmw_base += fw->size;
+ cxl_resv_end = cxl_fmw_base;
+ }
+ }
+ }
+
/* Initialize PC system firmware */
pc_system_firmware_init(pcms, rom_memory);
@@ -932,6 +964,10 @@ void pc_memory_init(PCMachineState *pcms,
if (!pcmc->broken_reserved_end) {
res_mem_end += memory_region_size(&machine->device_memory->mr);
}
+
+ if (machine->cxl_devices_state->is_enabled) {
+ res_mem_end = cxl_resv_end;
+ }
*val = cpu_to_le64(ROUND_UP(res_mem_end, 1 * GiB));
fw_cfg_add_file(fw_cfg, "etc/reserved-memory-end", val, sizeof(*val));
}
@@ -965,7 +1001,17 @@ uint64_t pc_pci_hole64_start(void)
X86MachineState *x86ms = X86_MACHINE(pcms);
uint64_t hole64_start = 0;
- if (pcmc->has_reserved_memory && ms->device_memory->base) {
+ if (ms->cxl_devices_state->host_mr.addr) {
+ hole64_start = ms->cxl_devices_state->host_mr.addr +
+ memory_region_size(&ms->cxl_devices_state->host_mr);
+ if (ms->cxl_devices_state->fixed_windows) {
+ GList *it;
+ for (it = ms->cxl_devices_state->fixed_windows; it; it = it->next) {
+ CXLFixedWindow *fw = it->data;
+ hole64_start = fw->mr.addr + memory_region_size(&fw->mr);
+ }
+ }
+ } else if (pcmc->has_reserved_memory && ms->device_memory->base) {
hole64_start = ms->device_memory->base;
if (!pcmc->broken_reserved_end) {
hole64_start += memory_region_size(&ms->device_memory->mr);
@@ -1077,6 +1123,7 @@ void pc_basic_device_init(struct PCMachineState *pcms,
ISADevice *pit = NULL;
MemoryRegion *ioport80_io = g_new(MemoryRegion, 1);
MemoryRegion *ioportF0_io = g_new(MemoryRegion, 1);
+ X86MachineState *x86ms = X86_MACHINE(pcms);
memory_region_init_io(ioport80_io, NULL, &ioport80_io_ops, NULL, "ioport80", 1);
memory_region_add_subregion(isa_bus->address_space_io, 0x80, ioport80_io);
@@ -1121,7 +1168,8 @@ void pc_basic_device_init(struct PCMachineState *pcms,
qemu_register_boot_set(pc_boot_set, *rtc_state);
- if (!xen_enabled() && pcms->pit_enabled) {
+ if (!xen_enabled() &&
+ (x86ms->pit == ON_OFF_AUTO_AUTO || x86ms->pit == ON_OFF_AUTO_ON)) {
if (kvm_pit_in_kernel()) {
pit = kvm_pit_init(isa_bus, 0x40);
} else {
@@ -1491,20 +1539,6 @@ static void pc_machine_set_sata(Object *obj, bool value, Error **errp)
pcms->sata_enabled = value;
}
-static bool pc_machine_get_pit(Object *obj, Error **errp)
-{
- PCMachineState *pcms = PC_MACHINE(obj);
-
- return pcms->pit_enabled;
-}
-
-static void pc_machine_set_pit(Object *obj, bool value, Error **errp)
-{
- PCMachineState *pcms = PC_MACHINE(obj);
-
- pcms->pit_enabled = value;
-}
-
static bool pc_machine_get_hpet(Object *obj, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
@@ -1661,7 +1695,6 @@ static void pc_machine_initfn(Object *obj)
pcms->acpi_build_enabled = PC_MACHINE_GET_CLASS(pcms)->has_acpi_build;
pcms->smbus_enabled = true;
pcms->sata_enabled = true;
- pcms->pit_enabled = true;
pcms->i8042_enabled = true;
pcms->max_fw_size = 8 * MiB;
#ifdef CONFIG_HPET
@@ -1761,6 +1794,7 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE;
mc->nvdimm_supported = true;
mc->smp_props.dies_supported = true;
+ mc->cxl_supported = true;
mc->default_ram_id = "pc.ram";
object_class_property_add(oc, PC_MACHINE_MAX_RAM_BELOW_4G, "size",
@@ -1789,11 +1823,6 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
object_class_property_set_description(oc, PC_MACHINE_SATA,
"Enable/disable Serial ATA bus");
- object_class_property_add_bool(oc, PC_MACHINE_PIT,
- pc_machine_get_pit, pc_machine_set_pit);
- object_class_property_set_description(oc, PC_MACHINE_PIT,
- "Enable/disable Intel 8254 programmable interval timer emulation");
-
object_class_property_add_bool(oc, "hpet",
pc_machine_get_hpet, pc_machine_set_hpet);
object_class_property_set_description(oc, "hpet",
generated by cgit v1.2.3 (git 2.26.2) at 2025-02-18 10:02:43 +0000