acpi: factor out fw_cfg_add_acpi_dsdt()
Add helper function to add fw_cfg device,
also move code to hw/i386/fw_cfg.c.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200619091905.21676-8-kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index 13113e8..19e9c29 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -1802,30 +1802,8 @@
/* create fw_cfg node, unconditionally */
{
- /* when using port i/o, the 8-bit data register *always* overlaps
- * with half of the 16-bit control register. Hence, the total size
- * of the i/o region used is FW_CFG_CTL_SIZE; when using DMA, the
- * DMA control register is located at FW_CFG_DMA_IO_BASE + 4 */
- uint8_t io_size = object_property_get_bool(OBJECT(x86ms->fw_cfg),
- "dma_enabled", NULL) ?
- ROUND_UP(FW_CFG_CTL_SIZE, 4) + sizeof(dma_addr_t) :
- FW_CFG_CTL_SIZE;
-
scope = aml_scope("\\_SB.PCI0");
- dev = aml_device("FWCF");
-
- aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002")));
-
- /* device present, functioning, decoding, not shown in UI */
- aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
-
- crs = aml_resource_template();
- aml_append(crs,
- aml_io(AML_DECODE16, FW_CFG_IO_BASE, FW_CFG_IO_BASE, 0x01, io_size)
- );
- aml_append(dev, aml_name_decl("_CRS", crs));
-
- aml_append(scope, dev);
+ fw_cfg_add_acpi_dsdt(scope, x86ms->fw_cfg);
aml_append(dsdt, scope);
}
diff --git a/hw/i386/fw_cfg.c b/hw/i386/fw_cfg.c
index da60ada..c55abfb 100644
--- a/hw/i386/fw_cfg.c
+++ b/hw/i386/fw_cfg.c
@@ -15,6 +15,7 @@
#include "qemu/osdep.h"
#include "sysemu/numa.h"
#include "hw/acpi/acpi.h"
+#include "hw/acpi/aml-build.h"
#include "hw/firmware/smbios.h"
#include "hw/i386/fw_cfg.h"
#include "hw/timer/hpet.h"
@@ -179,3 +180,30 @@
*val = cpu_to_le64(feature_control_bits | FEATURE_CONTROL_LOCKED);
fw_cfg_add_file(fw_cfg, "etc/msr_feature_control", val, sizeof(*val));
}
+
+void fw_cfg_add_acpi_dsdt(Aml *scope, FWCfgState *fw_cfg)
+{
+ /*
+ * when using port i/o, the 8-bit data register *always* overlaps
+ * with half of the 16-bit control register. Hence, the total size
+ * of the i/o region used is FW_CFG_CTL_SIZE; when using DMA, the
+ * DMA control register is located at FW_CFG_DMA_IO_BASE + 4
+ */
+ Object *obj = OBJECT(fw_cfg);
+ uint8_t io_size = object_property_get_bool(obj, "dma_enabled", NULL) ?
+ ROUND_UP(FW_CFG_CTL_SIZE, 4) + sizeof(dma_addr_t) :
+ FW_CFG_CTL_SIZE;
+ Aml *dev = aml_device("FWCF");
+ Aml *crs = aml_resource_template();
+
+ aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002")));
+
+ /* device present, functioning, decoding, not shown in UI */
+ aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
+
+ aml_append(crs,
+ aml_io(AML_DECODE16, FW_CFG_IO_BASE, FW_CFG_IO_BASE, 0x01, io_size));
+
+ aml_append(dev, aml_name_decl("_CRS", crs));
+ aml_append(scope, dev);
+}
diff --git a/hw/i386/fw_cfg.h b/hw/i386/fw_cfg.h
index 9e74278..275f15c 100644
--- a/hw/i386/fw_cfg.h
+++ b/hw/i386/fw_cfg.h
@@ -25,5 +25,6 @@
uint16_t apic_id_limit);
void fw_cfg_build_smbios(MachineState *ms, FWCfgState *fw_cfg);
void fw_cfg_build_feature_control(MachineState *ms, FWCfgState *fw_cfg);
+void fw_cfg_add_acpi_dsdt(Aml *scope, FWCfgState *fw_cfg);
#endif
