hw/testdev.c

   1 #include "hw.h"
   2 #include "qdev.h"
   3 #include "isa.h"
   4
   5 struct testdev {
   6     ISADevice dev;
   7     CharDriverState *chr;
   8 };
   9
  10 static void test_device_serial_write(void *opaque, uint32_t addr, uint32_t data)
  11 {
  12     struct testdev *dev = opaque;
  13     uint8_t buf[1] = { data };
  14
  15     if (dev->chr) {
  16         qemu_chr_write(dev->chr, buf, 1);
  17     }
  18 }
  19
  20 static void test_device_exit(void *opaque, uint32_t addr, uint32_t data)
  21 {
  22     exit(data);
  23 }
  24
  25 static uint32_t test_device_memsize_read(void *opaque, uint32_t addr)
  26 {
  27     return ram_size;
  28 }
  29
  30 static void test_device_irq_line(void *opaque, uint32_t addr, uint32_t data)
  31 {
  32     extern qemu_irq *ioapic_irq_hack;
  33
  34     qemu_set_irq(ioapic_irq_hack[addr - 0x2000], !!data);
  35 }
  36
  37 static int init_test_device(ISADevice *isa)
  38 {
  39     struct testdev *dev = DO_UPCAST(struct testdev, dev, isa);
  40
  41     register_ioport_write(0xf1, 1, 1, test_device_serial_write, dev);
  42     register_ioport_write(0xf4, 1, 4, test_device_exit, dev);
  43     register_ioport_read(0xd1, 1, 4, test_device_memsize_read, dev);
  44     register_ioport_write(0x2000, 24, 1, test_device_irq_line, NULL);
  45     return 0;
  46 }
  47
  48 static ISADeviceInfo testdev_info = {
  49     .qdev.name  = "testdev",
  50     .qdev.size  = sizeof(struct testdev),
  51     .init       = init_test_device,
  52     .qdev.props = (Property[]) {
  53         DEFINE_PROP_CHR("chardev", struct testdev, chr),
  54         DEFINE_PROP_END_OF_LIST(),
  55     },
  56 };
  57
  58 static void testdev_register_devices(void)
  59 {
  60     isa_qdev_register(&testdev_info);
  61 }
  62
  63 device_init(testdev_register_devices)