# HG changeset patch
# Parent 1328cb41b1bb4d39588c1934c841b3e4362f7413
rathaxes: initialize transmission on the e1000 sample:

- This is documented in details in the sections 14.5 and 3.3 of the
  Intel Gigabit Controller Software Developer manual.

diff --git a/rathaxes/samples/e1000/e1000.blt b/rathaxes/samples/e1000/e1000.blt
--- a/rathaxes/samples/e1000/e1000.blt
+++ b/rathaxes/samples/e1000/e1000.blt
@@ -34,6 +34,24 @@
         }
     }
 
+    template type   e1000:TxDescriptor()
+    {
+        chunk   LKM:includes()
+        {
+            typedef int ${e1000:TxDescriptor};
+
+            static const ${e1000:TxDescriptor} force_rtx_e1000_tx_descriptor_decl;
+        }
+
+        chunk   ::decl()
+        {
+            typedef struct rtx_e1000_tx_descriptor
+            {
+
+            }
+        }
+    }
+
     /*
      * Ring of e1000::RxDescriptors and their corresponding skbuffs.
      *
@@ -103,6 +121,7 @@
 
                 /* we can't use the Rathaxes type here (#8) */
                 struct rtx_e1000_rx_ring    rx_ring;
+                struct rtx_e1000_tx_ring    tx_ring;
             } *rtx_e1000_ctx_p;
         }
 
@@ -736,6 +755,20 @@
             }
 
             /*
+             * Transmission initialization (section 14.5):
+             *
+             * 1. Allocate the transmit descriptors ring and map it to make it
+             *    accessible by the device;
+             * 2. Write the start address of the ring in TDBAL/TDBAH and set
+             *    TDLEN to the size of the ring;
+             * 3. Set the TDH/TDT indexes to the beginning and end of the ring;
+             * 4. Set TCTL.PSP to pad short packets and TCTL.EN to enable the
+             *    transmitter.
+             */
+
+            /* 1. Allocate the tx ring */
+
+            /*
              * XXX: We can't return here since we are not in a function but in
              * a chunk of code (injected in a function).
              */