@@ -2,7 +2,7 @@ common-obj-$(CONFIG_ACPI_X86) += core.o piix4.o pcihp.o
common-obj-$(CONFIG_ACPI_X86_ICH) += ich9.o tco.o
common-obj-$(CONFIG_ACPI_CPU_HOTPLUG) += cpu_hotplug.o
common-obj-$(CONFIG_ACPI_MEMORY_HOTPLUG) += memory_hotplug.o
-common-obj-$(CONFIG_ACPI_NVDIMM) += nvdimm.o
+obj-$(CONFIG_ACPI_NVDIMM) += nvdimm.o
common-obj-$(CONFIG_ACPI) += acpi_interface.o
common-obj-$(CONFIG_ACPI) += bios-linker-loader.o
common-obj-$(CONFIG_ACPI) += aml-build.o
@@ -28,6 +28,7 @@
#include "hw/acpi/acpi.h"
#include "hw/acpi/aml-build.h"
+#include "hw/nvram/fw_cfg.h"
#include "hw/mem/nvdimm.h"
static int nvdimm_plugged_device_list(Object *obj, void *opaque)
@@ -367,6 +368,40 @@ static void nvdimm_build_nfit(GSList *device_list, GArray *table_offsets,
g_array_free(structures, true);
}
+static uint64_t
+nvdimm_dsm_read(void *opaque, hwaddr addr, unsigned size)
+{
+ return 0;
+}
+
+static void
+nvdimm_dsm_write(void *opaque, hwaddr addr, uint64_t val, unsigned size)
+{
+}
+
+static const MemoryRegionOps nvdimm_dsm_ops = {
+ .read = nvdimm_dsm_read,
+ .write = nvdimm_dsm_write,
+ .endianness = DEVICE_LITTLE_ENDIAN,
+ .valid = {
+ .min_access_size = 4,
+ .max_access_size = 4,
+ },
+};
+
+void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io,
+ FWCfgState *fw_cfg, Object *owner)
+{
+ memory_region_init_io(&state->io_mr, owner, &nvdimm_dsm_ops, state,
+ "nvdimm-acpi-io", NVDIMM_ACPI_IO_LEN);
+ memory_region_add_subregion(io, NVDIMM_ACPI_IO_BASE, &state->io_mr);
+
+ state->dsm_mem = g_array_new(false, true /* clear */, 1);
+ acpi_data_push(state->dsm_mem, TARGET_PAGE_SIZE);
+ fw_cfg_add_file(fw_cfg, NVDIMM_DSM_MEM_FILE, state->dsm_mem->data,
+ state->dsm_mem->len);
+}
+
#define NVDIMM_COMMON_DSM "NCAL"
static void nvdimm_build_common_dsm(Aml *dev)
@@ -39,7 +39,6 @@
#include "hw/loader.h"
#include "hw/isa/isa.h"
#include "hw/acpi/memory_hotplug.h"
-#include "hw/mem/nvdimm.h"
#include "sysemu/tpm.h"
#include "hw/acpi/tpm.h"
#include "sysemu/tpm_backend.h"
@@ -1696,13 +1695,6 @@ static bool acpi_has_iommu(void)
return intel_iommu && !ambiguous;
}
-static bool acpi_has_nvdimm(void)
-{
- PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
-
- return pcms->nvdimm;
-}
-
static
void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
{
@@ -1787,7 +1779,7 @@ void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
build_dmar_q35(tables_blob, tables->linker);
}
- if (acpi_has_nvdimm()) {
+ if (guest_info->has_nvdimm) {
nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
pm.dsdt_revision);
}
@@ -1220,6 +1220,8 @@ PcGuestInfo *pc_guest_info_init(PCMachineState *pcms)
}
}
+ guest_info->has_nvdimm = pcms->acpi_nvdimm_state.is_enabled;
+
guest_info_state->machine_done.notify = pc_guest_info_machine_done;
qemu_add_machine_init_done_notifier(&guest_info_state->machine_done);
return guest_info;
@@ -1869,14 +1871,14 @@ static bool pc_machine_get_nvdimm(Object *obj, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
- return pcms->nvdimm;
+ return pcms->acpi_nvdimm_state.is_enabled;
}
static void pc_machine_set_nvdimm(Object *obj, bool value, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
- pcms->nvdimm = value;
+ pcms->acpi_nvdimm_state.is_enabled = value;
}
static void pc_machine_initfn(Object *obj)
@@ -1915,7 +1917,7 @@ static void pc_machine_initfn(Object *obj)
&error_abort);
/* nvdimm is disabled on default. */
- pcms->nvdimm = false;
+ pcms->acpi_nvdimm_state.is_enabled = false;
object_property_add_bool(obj, PC_MACHINE_NVDIMM, pc_machine_get_nvdimm,
pc_machine_set_nvdimm, &error_abort);
}
@@ -281,6 +281,11 @@ static void pc_init1(MachineState *machine,
if (pcmc->pci_enabled) {
pc_pci_device_init(pci_bus);
}
+
+ if (guest_info->has_nvdimm) {
+ nvdimm_init_acpi_state(&pcms->acpi_nvdimm_state, system_io,
+ guest_info->fw_cfg, OBJECT(pcms));
+ }
}
/* Looking for a pc_compat_2_4() function? It doesn't exist.
@@ -60,6 +60,7 @@ static void pc_q35_init(MachineState *machine)
PCIDevice *lpc;
BusState *idebus[MAX_SATA_PORTS];
ISADevice *rtc_state;
+ MemoryRegion *system_io = get_system_io();
MemoryRegion *pci_memory;
MemoryRegion *rom_memory;
MemoryRegion *ram_memory;
@@ -176,7 +177,7 @@ static void pc_q35_init(MachineState *machine)
q35_host->mch.ram_memory = ram_memory;
q35_host->mch.pci_address_space = pci_memory;
q35_host->mch.system_memory = get_system_memory();
- q35_host->mch.address_space_io = get_system_io();
+ q35_host->mch.address_space_io = system_io;
q35_host->mch.below_4g_mem_size = pcms->below_4g_mem_size;
q35_host->mch.above_4g_mem_size = pcms->above_4g_mem_size;
/* pci */
@@ -267,6 +268,11 @@ static void pc_q35_init(MachineState *machine)
if (pcmc->pci_enabled) {
pc_pci_device_init(host_bus);
}
+
+ if (guest_info->has_nvdimm) {
+ nvdimm_init_acpi_state(&pcms->acpi_nvdimm_state, system_io,
+ guest_info->fw_cfg, OBJECT(pcms));
+ }
}
/* Looking for a pc_compat_2_4() function? It doesn't exist.
@@ -17,6 +17,7 @@
#include "hw/boards.h"
#include "hw/compat.h"
#include "hw/mem/pc-dimm.h"
+#include "hw/mem/nvdimm.h"
#define HPET_INTCAP "hpet-intcap"
@@ -55,7 +56,8 @@ struct PCMachineState {
uint64_t max_ram_below_4g;
OnOffAuto vmport;
OnOffAuto smm;
- bool nvdimm;
+
+ AcpiNVDIMMState acpi_nvdimm_state;
/* RAM information (sizes, addresses, configuration): */
ram_addr_t below_4g_mem_size, above_4g_mem_size;
@@ -163,6 +165,7 @@ struct PcGuestInfo {
bool has_acpi_build;
bool has_reserved_memory;
bool rsdp_in_ram;
+ bool has_nvdimm;
};
/* parallel.c */
@@ -25,8 +25,31 @@
#include "hw/mem/pc-dimm.h"
-#define TYPE_NVDIMM "nvdimm"
+#define TYPE_NVDIMM "nvdimm"
+#define NVDIMM_DSM_MEM_FILE "etc/acpi/nvdimm-mem"
+
+/* IO port 0x0a18 - 0xa20 in guest are reserved for NVDIMM ACPI emulation. */
+#define NVDIMM_ACPI_IO_BASE 0x0a18
+#define NVDIMM_ACPI_IO_LEN 8
+
+/*
+ * AcpiNVDIMMState:
+ * @is_enabled: detect if NVDIMM support is enabled.
+ *
+ * @dsm_mem: the data of the fw_cfg file NVDIMM_DSM_MEM_FILE.
+ * @io_mr: the IO region used by OSPM to transfer control to QEMU.
+ */
+struct AcpiNVDIMMState {
+ bool is_enabled;
+
+ GArray *dsm_mem;
+ MemoryRegion io_mr;
+};
+typedef struct AcpiNVDIMMState AcpiNVDIMMState;
+
+void nvdimm_init_acpi_state(AcpiNVDIMMState *state, MemoryRegion *io,
+ FWCfgState *fw_cfg, Object *owner);
void nvdimm_build_acpi(GArray *table_offsets, GArray *table_data,
GArray *linker, uint8_t revision);
#endif
IO port 0x0a18 - 0x0a20 in guest is reserved for NVDIMM ACPI emulation, the table, NVDIMM_DSM_MEM_FILE, will be patched into NVDIMM ACPI binary code OSPM uses this port to tell QEMU the final address of the DSM memory and notify QEMU to emulate the DSM method Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> --- hw/acpi/Makefile.objs | 2 +- hw/acpi/nvdimm.c | 35 +++++++++++++++++++++++++++++++++++ hw/i386/acpi-build.c | 10 +--------- hw/i386/pc.c | 8 +++++--- hw/i386/pc_piix.c | 5 +++++ hw/i386/pc_q35.c | 8 +++++++- include/hw/i386/pc.h | 5 ++++- include/hw/mem/nvdimm.h | 25 ++++++++++++++++++++++++- 8 files changed, 82 insertions(+), 16 deletions(-)