rom/usb/pciusb/buffer.c

   1 #include <devices/usbhardware.h>
   2 #include <exec/memory.h>
   3 #include <proto/exec.h>
   4
   5 #if __WORDSIZE == 64
   6
   7 APTR usbGetBuffer(APTR data, ULONG len, UWORD dir)
   8 {
   9     APTR ret = data;
  10
  11     if (((IPTR)data + len - 1) >> 32)
  12     {
  13         ret = AllocVec(len, MEMF_31BIT|MEMF_PUBLIC);
  14
  15         if (ret && (dir == UHDIR_OUT))
  16             CopyMem(data, ret, len);
  17     }
  18
  19     return ret;
  20 }
  21
  22 void usbReleaseBuffer(APTR buffer, APTR data, ULONG len, UWORD dir)
  23 {
  24     if (buffer && (buffer != data))
  25     {
  26         if (len && (dir == UHDIR_IN))
  27             CopyMem(buffer, data, len);
  28
  29         FreeVec(buffer);
  30     }
  31 }
  32
  33 #endif