hw/display/edid-region.c

   1 #include "qemu/osdep.h"
   2 #include "exec/memory.h"
   3 #include "hw/display/edid.h"
   4
   5 static uint64_t edid_region_read(void *ptr, hwaddr addr, unsigned size)
   6 {
   7     uint8_t *edid = ptr;
   8
   9     return edid[addr];
  10 }
  11
  12 static void edid_region_write(void *ptr, hwaddr addr,
  13                              uint64_t val, unsigned size)
  14 {
  15     /* read only */
  16 }
  17
  18 static const MemoryRegionOps edid_region_ops = {
  19     .read = edid_region_read,
  20     .write = edid_region_write,
  21     .valid.min_access_size = 1,
  22     .valid.max_access_size = 4,
  23     .impl.min_access_size = 1,
  24     .impl.max_access_size = 1,
  25     .endianness = DEVICE_LITTLE_ENDIAN,
  26 };
  27
  28 void qemu_edid_region_io(MemoryRegion *region, Object *owner,
  29                          uint8_t *edid, size_t size)
  30 {
  31     memory_region_init_io(region, owner, &edid_region_ops,
  32                           edid, "edid", size);
  33 }