Only issue responses if we aren;t already blocked

[gem5.git] / src / dev / platform.cc

diff --git a/src/dev/platform.cc b/src/dev/platform.cc
index 9d10e08285b2182f150594dea489864cc02b1ac8..07288249ce01dd299ec8aedccae716e9b088cbbe 100644 (file)
--- a/src/dev/platform.cc
+++ b/src/dev/platform.cc
@@ -24,8 +24,12 @@
  * 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
+ *          Nathan Binkert
  */
 
+#include "base/misc.hh"
 #include "dev/platform.hh"
 #include "sim/builder.hh"
 #include "sim/sim_exit.hh"
@@ -60,5 +64,21 @@ Platform::pciToDma(Addr pciAddr) const
    panic("No PCI dma support in platform.");
 }
 
+void
+Platform::registerPciDevice(uint8_t bus, uint8_t dev, uint8_t func, uint8_t intr)
+{
+    uint32_t bdf = bus << 16 | dev << 8 | func << 0;
+    if (pciDevices.find(bdf) != pciDevices.end())
+        fatal("Two PCI devices have same bus:device:function\n");
+
+    if (intLines.test(intr))
+        fatal("Two PCI devices have same interrupt line: %d\n", intr);
+
+    pciDevices.insert(bdf);
+
+    intLines.set(intr);
+}
+
+
 DEFINE_SIM_OBJECT_CLASS_NAME("Platform", Platform)