X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fdev%2Fisa_fake.hh;h=07657ad7dfc141a4128ddd484018fba7b7b8eadb;hb=eae1e97fb002b44a9d8c46df2da1ddc1d0156ce4;hp=65d44f6a597873a1cfb945a3ac94c87d1c3c9fc1;hpb=ba2eae5d528487900d1510fc0a160e660f2c394c;p=gem5.git

diff --git a/src/dev/isa_fake.hh b/src/dev/isa_fake.hh
index 65d44f6a5..07657ad7d 100644
--- a/src/dev/isa_fake.hh
+++ b/src/dev/isa_fake.hh
@@ -24,6 +24,8 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Ali Saidi
  */
 
 /** @file
@@ -33,46 +35,55 @@
 #ifndef __ISA_FAKE_HH__
 #define __ISA_FAKE_HH__
 
-#include "dev/tsunami.hh"
+#include <string>
+
 #include "base/range.hh"
 #include "dev/io_device.hh"
+// #include "dev/alpha/tsunami.hh"
+#include "mem/packet.hh"
+#include "params/IsaFake.hh"
 
 /**
- * IsaFake is a device that returns -1 on all reads and
- * accepts all writes. It is meant to be placed at an address range
+ * IsaFake is a device that returns, BadAddr, 1 or 0 on all reads and
+ *  rites. It is meant to be placed at an address range
  * so that an mcheck doesn't occur when an os probes a piece of hw
- * that doesn't exist (e.g. UARTs1-3).
+ * that doesn't exist (e.g. UARTs1-3), or catch requests in the memory system
+ * that have no responders..
  */
 class IsaFake : public BasicPioDevice
 {
-  public:
-    struct Params : public BasicPioDevice::Params
-    {
-        Addr pio_size;
-    };
   protected:
-    const Params *params() const { return (const Params*)_params; }
+    uint8_t retData8;
+    uint16_t retData16;
+    uint32_t retData32;
+    uint64_t retData64;
 
   public:
+    typedef IsaFakeParams Params;
+    const Params *
+    params() const
+    {
+        return dynamic_cast<const Params *>(_params);
+    }
     /**
-      * The constructor for Tsunmami Fake just registers itself with the MMU.
+      * The constructor for Isa Fake just registers itself with the MMU.
       * @param p params structure
       */
     IsaFake(Params *p);
 
     /**
      * This read always returns -1.
-     * @param req The memory request.
+     * @param pkt The memory request.
      * @param data Where to put the data.
      */
-    virtual Tick read(Packet *pkt);
+    virtual Tick read(PacketPtr pkt);
 
     /**
      * All writes are simply ignored.
-     * @param req The memory request.
+     * @param pkt The memory request.
      * @param data the data to not write.
      */
-    virtual Tick write(Packet *pkt);
+    virtual Tick write(PacketPtr pkt);
 };
 
-#endif // __TSUNAMI_FAKE_HH__
+#endif // __ISA_FAKE_HH__