Changeset 545764b in mainline for uspace/drv/ohci/hw_struct/endpoint_descriptor.h

Timestamp:

2011-04-14T21:08:07Z (13 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

c9dc471

Parents:

2471aaf

Message:

Add support for OHCI toggle set and get

File:

• uspace/drv/ohci/hw_struct/endpoint_descriptor.h (modified) (2 diffs)

uspace/drv/ohci/hw_struct/endpoint_descriptor.h

@@ -73 +73 @@
 #define ED_TDHEAD_ZERO_SHIFT (2)
 #define ED_TDHEAD_TOGGLE_CARRY (0x2)
+#define ED_TDHEAD_HALTED_FLAG (0x1)
 
         volatile uint32_t next;
@@ -106 +107 @@
         instance->next = pa;
 }
+
+static inline int ed_toggle_get(ed_t *instance)
+{
+        assert(instance);
+        return (instance->td_head & ED_TDHEAD_TOGGLE_CARRY) ? 1 : 0;
+}
+
+static inline void ed_toggle_set(ed_t *instance, int toggle)
+{
+        assert(instance);
+        assert(toggle == 0 || toggle == 1);
+        if (toggle == 1) {
+                instance->td_head |= ED_TDHEAD_TOGGLE_CARRY;
+        } else {
+                /* clear halted flag when reseting toggle */
+                instance->td_head &= ~ED_TDHEAD_TOGGLE_CARRY;
+                instance->td_head &= ~ED_TDHEAD_HALTED_FLAG;
+        }
+}
 #endif
 /**