bochs-display: wire up edid support

Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Message-id: 20181005160147.892-3-kraxel@redhat.com

hw/display/Makefile.objs

@@ -19,6 +19,7 @@ common-obj-$(CONFIG_VGA_ISA) += vga-isa.o
 common-obj-$(CONFIG_VGA_ISA_MM) += vga-isa-mm.o
 common-obj-$(CONFIG_VMWARE_VGA) += vmware_vga.o
 common-obj-$(CONFIG_BOCHS_DISPLAY) += bochs-display.o
+common-obj-$(CONFIG_BOCHS_DISPLAY) += edid-region.o
 
 common-obj-$(CONFIG_BLIZZARD) += blizzard.o
 common-obj-$(CONFIG_EXYNOS4) += exynos4210_fimd.o

hw/display/bochs-display.c

@@ -9,6 +9,7 @@
 #include "hw/hw.h"
 #include "hw/pci/pci.h"
 #include "hw/display/bochs-vbe.h"
+#include "hw/display/edid.h"
 
 #include "qapi/error.h"
 
@@ -35,9 +36,13 @@ typedef struct BochsDisplayState {
     MemoryRegion     mmio;
     MemoryRegion     vbe;
     MemoryRegion     qext;
+    MemoryRegion     edid;
 
     /* device config */
     uint64_t         vgamem;
+    bool             enable_edid;
+    qemu_edid_info   edid_info;
+    uint8_t          edid_blob[256];
 
     /* device registers */
     uint16_t         vbe_regs[VBE_DISPI_INDEX_NB];
@@ -283,6 +288,12 @@ static void bochs_display_realize(PCIDevice *dev, Error **errp)
     pci_register_bar(&s->pci, 0, PCI_BASE_ADDRESS_MEM_PREFETCH, &s->vram);
     pci_register_bar(&s->pci, 2, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->mmio);
 
+    if (s->enable_edid) {
+        qemu_edid_generate(s->edid_blob, sizeof(s->edid_blob), &s->edid_info);
+        qemu_edid_region_io(&s->edid, obj, s->edid_blob, sizeof(s->edid_blob));
+        memory_region_add_subregion(&s->mmio, 0, &s->edid);
+    }
+
     if (pci_bus_is_express(pci_get_bus(dev))) {
         dev->cap_present |= QEMU_PCI_CAP_EXPRESS;
         ret = pcie_endpoint_cap_init(dev, 0x80);
@@ -325,6 +336,8 @@ static void bochs_display_exit(PCIDevice *dev)
 
 static Property bochs_display_properties[] = {
     DEFINE_PROP_SIZE("vgamem", BochsDisplayState, vgamem, 16 * MiB),
+    DEFINE_PROP_BOOL("edid", BochsDisplayState, enable_edid, false),
+    DEFINE_EDID_PROPERTIES(BochsDisplayState, edid_info),
     DEFINE_PROP_END_OF_LIST(),
 };