NFIT is defined in ACPI 6.0: 5.2.25 NVDIMM Firmware Interface Table (NFIT)
Currently, we only support PMEM mode. Each device has 3 structures:
- SPA structure, defines the PMEM region info
- MEM DEV structure, it has the @handle which is used to associate specified
ACPI NVDIMM device we will introduce in later patch.
Also we can happily ignored the memory device's interleave, the real
nvdimm hardware access is hidden behind host
- DCR structure, it defines vendor ID used to associate specified vendor
nvdimm driver. Since we only implement PMEM mode this time, Command
window and Data window are not needed
Signed-off-by: Xiao Guangrong <guangrong.xiao@xxxxxxxxxxxxxxx>
---
hw/i386/acpi-build.c | 4 +
hw/mem/nvdimm/acpi.c | 209 ++++++++++++++++++++++++++++++++++++++++++++++-
hw/mem/nvdimm/internal.h | 13 +++
hw/mem/nvdimm/nvdimm.c | 25 ++++++
include/hw/mem/nvdimm.h | 2 +
5 files changed, 252 insertions(+), 1 deletion(-)
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 95e0c65..c637dc8 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1661,6 +1661,7 @@ static bool acpi_has_iommu(void)
static
void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
{
+ PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
GArray *table_offsets;
unsigned facs, ssdt, dsdt, rsdt;
AcpiCpuInfo cpu;
@@ -1742,6 +1743,9 @@ void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
build_dmar_q35(tables_blob, tables->linker);
}
+ nvdimm_build_acpi_table(&pcms->nvdimm_memory, table_offsets, tables_blob,
+ tables->linker);
+
/* Add tables supplied by user (if any) */
for (u = acpi_table_first(); u; u = acpi_table_next(u)) {
unsigned len = acpi_table_len(u);
diff --git a/hw/mem/nvdimm/acpi.c b/hw/mem/nvdimm/acpi.c
index b640874..62b1e02 100644
--- a/hw/mem/nvdimm/acpi.c
+++ b/hw/mem/nvdimm/acpi.c
@@ -32,6 +32,46 @@
#include "hw/mem/nvdimm.h"
#include "internal.h"
+static void nfit_spa_uuid_pm(uuid_le *uuid)
+{
+ uuid_le uuid_pm = UUID_LE(0x66f0d379, 0xb4f3, 0x4074, 0xac, 0x43, 0x0d,
+ 0x33, 0x18, 0xb7, 0x8c, 0xdb);
+ memcpy(uuid, &uuid_pm, sizeof(uuid_pm));
+}
+
+enum {
+ NFIT_STRUCTURE_SPA = 0,
+ NFIT_STRUCTURE_MEMDEV = 1,
+ NFIT_STRUCTURE_IDT = 2,
+ NFIT_STRUCTURE_SMBIOS = 3,
+ NFIT_STRUCTURE_DCR = 4,
+ NFIT_STRUCTURE_BDW = 5,
+ NFIT_STRUCTURE_FLUSH = 6,
+};
+
+enum {
+ EFI_MEMORY_UC = 0x1ULL,
+ EFI_MEMORY_WC = 0x2ULL,
+ EFI_MEMORY_WT = 0x4ULL,
+ EFI_MEMORY_WB = 0x8ULL,
+ EFI_MEMORY_UCE = 0x10ULL,
+ EFI_MEMORY_WP = 0x1000ULL,
+ EFI_MEMORY_RP = 0x2000ULL,
+ EFI_MEMORY_XP = 0x4000ULL,
+ EFI_MEMORY_NV = 0x8000ULL,
+ EFI_MEMORY_MORE_RELIABLE = 0x10000ULL,
+};
