Commit 97917e9e authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

display/edid: add region helper. 



Create a io region for an EDID data block.

Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: default avatarPhilippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180925075646.25114-4-kraxel@redhat.com
parent e7992fc5

hw/display/Makefile.objs

+1 −0
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ common-obj-$(CONFIG_XEN) += xenfb.o 


common-obj-$(CONFIG_VGA_PCI) += vga-pci.o

common-obj-$(CONFIG_VGA_PCI) += bochs-display.o

common-obj-$(CONFIG_VGA_PCI) += edid-region.o

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

hw/display/edid-region.c

0 → 100644
+33 −0
Original line number Diff line number Diff line 
#include "qemu/osdep.h"

#include "qemu-common.h"

#include "hw/display/edid.h"



static uint64_t edid_region_read(void *ptr, hwaddr addr, unsigned size)

{

    uint8_t *edid = ptr;



    return edid[addr];

}



static void edid_region_write(void *ptr, hwaddr addr,

                             uint64_t val, unsigned size)

{

    /* read only */

}



static const MemoryRegionOps edid_region_ops = {

    .read = edid_region_read,

    .write = edid_region_write,

    .valid.min_access_size = 1,

    .valid.max_access_size = 4,

    .impl.min_access_size = 1,

    .impl.max_access_size = 1,

    .endianness = DEVICE_LITTLE_ENDIAN,

};



void qemu_edid_region_io(MemoryRegion *region, Object *owner,

                         uint8_t *edid, size_t size)

{

    memory_region_init_io(region, owner, &edid_region_ops,

                          edid, "edid", size);

}

include/hw/display/edid.h

+4 −0
Original line number Diff line number Diff line 
#ifndef EDID_H

#define EDID_H



#include "hw/hw.h"



typedef struct qemu_edid_info {

    const char *vendor;

    const char *name;
@@ -15,5 +17,7 @@ typedef struct qemu_edid_info { 
void qemu_edid_generate(uint8_t *edid, size_t size,

                        qemu_edid_info *info);

size_t qemu_edid_size(uint8_t *edid);

void qemu_edid_region_io(MemoryRegion *region, Object *owner,

                         uint8_t *edid, size_t size);



#endif /* EDID_H */