Only issue responses if we aren;t already blocked

[gem5.git] / src / dev / pcidev.hh

diff --git a/src/dev/pcidev.hh b/src/dev/pcidev.hh
index 847fb07d03ba0d5c6d00c760a3caabae72eb0715..22dd6296e630b452f5268285ff7fc0efb4fb4af6 100644 (file)
--- a/src/dev/pcidev.hh
+++ b/src/dev/pcidev.hh
@@ -62,7 +62,6 @@ class PciConfigData : public SimObject
         : SimObject(name)
     {
         memset(config.data, 0, sizeof(config.data));
-        memset(BARAddrs, 0, sizeof(BARAddrs));
         memset(BARSize, 0, sizeof(BARSize));
     }
 
@@ -71,29 +70,23 @@ class PciConfigData : public SimObject
 
     /** The size of the BARs */
     uint32_t BARSize[6];
-
-    /** The addresses of the BARs */
-    Addr BARAddrs[6];
 };
 
 
 /**
- * PCI device, base implemnation is only config space.
+ * PCI device, base implementation is only config space.
  */
 class PciDev : public DmaDevice
 {
-    class PciConfigPort : public PioPort
+    class PciConfigPort : public SimpleTimingPort
     {
       protected:
         PciDev *device;
 
-        virtual bool recvTiming(Packet *pkt);
-
         virtual Tick recvAtomic(Packet *pkt);
 
-        virtual void recvFunctional(Packet *pkt) ;
-
-        virtual void getDeviceAddressRanges(AddrRangeList &resp, AddrRangeList &snoop);
+        virtual void getDeviceAddressRanges(AddrRangeList &resp,
+                                            AddrRangeList &snoop);
 
         Platform *platform;
 
@@ -105,9 +98,7 @@ class PciDev : public DmaDevice
 
       public:
         PciConfigPort(PciDev *dev, int busid, int devid, int funcid,
-                Platform *p);
-
-      friend class PioPort::SendEvent;
+                      Platform *p);
     };
 
   public:
@@ -151,6 +142,10 @@ class PciDev : public DmaDevice
     /** The current address mapping of the BARs */
     Addr BARAddrs[6];
 
+    /**
+     * Does the given address lie within the space mapped by the given
+     * base address register?
+     */
     bool
     isBAR(Addr addr, int bar) const
     {
@@ -158,6 +153,10 @@ class PciDev : public DmaDevice
         return BARAddrs[bar] <= addr && addr < BARAddrs[bar] + BARSize[bar];
     }
 
+    /**
+     * Which base address register (if any) maps the given address?
+     * @return The BAR number (0-5 inclusive), or -1 if none.
+     */
     int
     getBAR(Addr addr)
     {
@@ -168,14 +167,23 @@ class PciDev : public DmaDevice
         return -1;
     }
 
+    /**
+     * Which base address register (if any) maps the given address?
+     * @param addr The address to check.
+     * @retval bar The BAR number (0-5 inclusive),
+     *             only valid if return value is true.
+     * @retval offs The offset from the base address,
+     *              only valid if return value is true.
+     * @return True iff address maps to a base address register's region.
+     */
     bool
-    getBAR(Addr paddr, Addr &daddr, int &bar)
+    getBAR(Addr addr, int &bar, Addr &offs)
     {
-        int b = getBAR(paddr);
+        int b = getBAR(addr);
         if (b < 0)
             return false;
 
-        daddr = paddr - BARAddrs[b];
+        offs = addr - BARAddrs[b];
         bar = b;
         return true;
     }
@@ -225,10 +233,6 @@ class PciDev : public DmaDevice
      */
     void addressRanges(AddrRangeList &range_list);
 
-    /** Do a PCI Configspace memory access. */
-    Tick recvConfig(Packet *pkt)
-    { return pkt->isRead() ? readConfig(pkt) : writeConfig(pkt); }
-
     /**
      * Constructor for PCI Dev. This function copies data from the
      * config file object PCIConfigData and registers the device with