+/*
+ * Acess2 Kernel - Mouse Mulitplexing Driver
+ * - By John Hodge (thePowersGang)
+ *
+ * main.c
+ * - Mouse mulitplexing
+ */
+#define DEBUG 0
+#define VERSION VER2(0,1)
+#include <acess.h>
+#include <modules.h>
+#include <fs_devfs.h>
+#include "include/mouse_int.h"
+
+// === PROTOTYPES ===
+ int Mouse_Install(char **Arguments);
+ int Mouse_Cleanup(void);
+// - "User" side
+ int Mouse_Root_ReadDir(tVFS_Node *Node, int Pos, char Dest[FILENAME_MAX]);
+tVFS_Node *Mouse_Root_FindDir(tVFS_Node *Node, const char *Name, Uint Flags);
+ int Mouse_Dev_IOCtl(tVFS_Node *Node, int ID, void *Data);
+size_t Mouse_Dev_Read(tVFS_Node *Node, off_t Offset, size_t Length, void *Data, Uint Flags);
+// - Device Side
+void Mouse_HandleEvent(Uint32 ButtonState, int *AxisDeltas, int *AxisValues);
+
+// === GLOBALS ===
+tVFS_NodeType gMouse_RootNodeType = {
+ .ReadDir = Mouse_Root_ReadDir,
+ .FindDir = Mouse_Root_FindDir
+};
+tVFS_NodeType gMouse_DevNodeType = {
+ .IOCtl = Mouse_Dev_IOCtl,
+ .Read = Mouse_Dev_Read
+};
+tDevFS_Driver gMouse_DevInfo = {
+ NULL, "Mouse",
+ { .Flags = VFS_FFLAG_DIRECTORY, .Type = &gMouse_RootNodeType, .Size = 1 }
+};
+tPointer gMouse_Pointer;
+
+// === CODE ===
+/**
+ * \brief Initialise the keyboard driver
+ */
+int Mouse_Install(char **Arguments)
+{
+ /// - Register with DevFS
+ DevFS_AddDevice( &gMouse_DevInfo );
+
+ gMouse_Pointer.Node.Type = &gMouse_DevNodeType;
+ gMouse_Pointer.Node.ImplPtr = &gMouse_Pointer;
+ gMouse_Pointer.FileHeader = (void*)gMouse_Pointer.FileData;
+ gMouse_Pointer.Axies = (void*)( gMouse_Pointer.FileHeader + 1 );
+ gMouse_Pointer.Buttons = (void*)( gMouse_Pointer.Axies + MAX_AXIES );
+ gMouse_Pointer.FileHeader->NAxies = MAX_AXIES;
+ gMouse_Pointer.FileHeader->NButtons = MAX_BUTTONS;
+
+ return 0;
+}
+
+/**
+ * \brief Pre-unload cleanup function
+ */
+int Mouse_Cleanup(void)
+{
+ return 0;
+}
+
+// --- VFS Interface ---
+int Mouse_Root_ReadDir(tVFS_Node *Node, int Pos, char Dest[FILENAME_MAX])
+{
+ if( Pos != 0 )
+ return -EINVAL;
+ strcpy(Dest, "system");
+ return 0;
+}
+
+tVFS_Node *Mouse_Root_FindDir(tVFS_Node *Node, const char *Name, Uint Flags)
+{
+ if( strcmp(Name, "system") != 0 ) return NULL;
+ return &gMouse_Pointer.Node;
+}
+
+static const char *csaIOCTL_NAMES[] = {DRV_IOCTLNAMES, DRV_JOY_IOCTLNAMES, NULL};
+/**
+ * \brief IOCtl handler for the mouse
+ */
+int Mouse_Dev_IOCtl(tVFS_Node *Node, int ID, void *Data)
+{
+ tJoystick_NumValue *numval = Data;
+ tPointer *ptr = Node->ImplPtr;
+ switch(ID)
+ {
+ BASE_IOCTLS(DRV_TYPE_MOUSE, "Mouse", VERSION, csaIOCTL_NAMES);
+
+ case JOY_IOCTL_GETSETAXISLIMIT:
+ if( !numval || !CheckMem(numval, sizeof(*numval)) )
+ return -1;
+ LOG("GetSetAxisLimit %i = %i", numval->Num, numval->Value);
+ if(numval->Num < 0 || numval->Num >= ptr->FileHeader->NAxies)
+ return 0;
+ if(numval->Value != -1)
+ ptr->AxisLimits[numval->Num] = numval->Value;
+ return ptr->AxisLimits[numval->Num];
+
+ case JOY_IOCTL_GETSETAXISPOSITION:
+ if( !numval || !CheckMem(numval, sizeof(*numval)) )
+ return -1;
+ if(numval->Num < 0 || numval->Num >= ptr->FileHeader->NAxies)
+ return 0;
+ if(numval->Value != -1)
+ ptr->Axies[numval->Num].CursorPos = numval->Value;
+ return ptr->Axies[numval->Num].CursorPos;
+ }
+ return -1;
+}
+
+/**
+ * \brief Read from a device
+ */
+size_t Mouse_Dev_Read(tVFS_Node *Node, off_t Offset, size_t Length, void *Data, Uint Flags)
+{
+ tPointer *ptr = Node->ImplPtr;
+ int n_buttons = ptr->FileHeader->NButtons;
+ int n_axies = ptr->FileHeader->NAxies;
+
+ ENTER("pNode iLength pData", Node, Length, Data);
+
+ // TODO: Locking (Acquire)
+
+ Length = MIN(
+ Length,
+ sizeof(tJoystick_FileHeader) + n_axies*sizeof(tJoystick_Axis) + n_buttons
+ );
+
+ // Mark as checked
+ VFS_MarkAvaliable( Node, 0 );
+
+ memcpy( Data, ptr->FileData, Length );
+
+ // TODO: Locking (Release)
+
+ LEAVE('i', Length);
+ return Length;
+}
+
+// --- Device Interface ---
+/*
+ * Handle a mouse event (movement or button press/release)
+ * - See Input/Mouse/include/mouse.h
+ */
+void Mouse_HandleEvent(Uint32 ButtonState, int *AxisDeltas, int *AxisValues)
+{
+ tPointer *ptr = &gMouse_Pointer;
+
+ ENTER("pHandle xButtonState pAxisDeltas", Handle, ButtonState, AxisDeltas);
+
+ // Update cursor position
+ for( int i = 0; i < 2; i ++ )
+ {
+ ptr->Axies[i].CursorPos = AxisValues[i];
+ ptr->Axies[i].CurValue = AxisDeltas ? AxisDeltas[i] : 0;
+ }
+ for( int i = 0; i < 5; i ++ )
+ ptr->Buttons[i] = ButtonState & (1 << i) ? 255 : 0;
+
+ VFS_MarkAvaliable( &ptr->Node, 1 );
+ LEAVE('-');
+}
+