rwhandler.c

   1 #include "rwhandler.h"
   2 #include "ioport.h"
   3 #include "cpu-all.h"
   4
   5 #define RWHANDLER_WRITE(name, len, type) \
   6 static void name(void *opaque, type addr, uint32_t value) \
   7 {\
   8     struct ReadWriteHandler *handler = opaque;\
   9     handler->write(handler, addr, value, len);\
  10 }
  11
  12 #define RWHANDLER_READ(name, len, type) \
  13 static uint32_t name(void *opaque, type addr) \
  14 { \
  15     struct ReadWriteHandler *handler = opaque; \
  16     return handler->read(handler, addr, len); \
  17 }
  18
  19 RWHANDLER_WRITE(cpu_io_memory_simple_writeb, 1, target_phys_addr_t);
  20 RWHANDLER_READ(cpu_io_memory_simple_readb, 1, target_phys_addr_t);
  21 RWHANDLER_WRITE(cpu_io_memory_simple_writew, 2, target_phys_addr_t);
  22 RWHANDLER_READ(cpu_io_memory_simple_readw, 2, target_phys_addr_t);
  23 RWHANDLER_WRITE(cpu_io_memory_simple_writel, 4, target_phys_addr_t);
  24 RWHANDLER_READ(cpu_io_memory_simple_readl, 4, target_phys_addr_t);
  25
  26 static CPUWriteMemoryFunc * const cpu_io_memory_simple_write[] = {
  27     &cpu_io_memory_simple_writeb,
  28     &cpu_io_memory_simple_writew,
  29     &cpu_io_memory_simple_writel,
  30 };
  31
  32 static CPUReadMemoryFunc * const cpu_io_memory_simple_read[] = {
  33     &cpu_io_memory_simple_readb,
  34     &cpu_io_memory_simple_readw,
  35     &cpu_io_memory_simple_readl,
  36 };
  37
  38 int cpu_register_io_memory_simple(struct ReadWriteHandler *handler, int endian)
  39 {
  40     if (!handler->read || !handler->write) {
  41         return -1;
  42     }
  43     return cpu_register_io_memory(cpu_io_memory_simple_read,
  44                                   cpu_io_memory_simple_write,
  45                                   handler, endian);
  46 }
  47
  48 RWHANDLER_WRITE(ioport_simple_writeb, 1, uint32_t);
  49 RWHANDLER_READ(ioport_simple_readb, 1, uint32_t);
  50 RWHANDLER_WRITE(ioport_simple_writew, 2, uint32_t);
  51 RWHANDLER_READ(ioport_simple_readw, 2, uint32_t);
  52 RWHANDLER_WRITE(ioport_simple_writel, 4, uint32_t);
  53 RWHANDLER_READ(ioport_simple_readl, 4, uint32_t);
  54
  55 int register_ioport_simple(ReadWriteHandler* handler,
  56                            pio_addr_t start, int length, int size)
  57 {
  58     IOPortWriteFunc *write;
  59     IOPortReadFunc *read;
  60     int r;
  61     switch (size) {
  62     case 1:
  63         write = ioport_simple_writeb;
  64         read = ioport_simple_readb;
  65         break;
  66     case 2:
  67         write = ioport_simple_writew;
  68         read = ioport_simple_readw;
  69         break;
  70     default:
  71         write = ioport_simple_writel;
  72         read = ioport_simple_readl;
  73     }
  74     if (handler->write) {
  75         r = register_ioport_write(start, length, size, write, handler);
  76         if (r < 0) {
  77             return r;
  78         }
  79     }
  80     if (handler->read) {
  81         r = register_ioport_read(start, length, size, read, handler);
  82         if (r < 0) {
  83             return r;
  84         }
  85     }
  86     return 0;
  87 }