gem5
|
EmulatedDriver is an abstract base class for fake SE-mode device drivers. More...
#include <emul_driver.hh>
Public Member Functions | |
EmulatedDriver (EmulatedDriverParams *p) | |
bool | match (const std::string &s) const |
Check for a match with this driver's filename. More... | |
virtual int | open (Process *p, ThreadContext *tc, int mode, int flags)=0 |
Abstract method, invoked when the user program calls open() on the device driver. More... | |
virtual int | ioctl (Process *p, ThreadContext *tc, unsigned req)=0 |
Abstract method, invoked when the user program calls ioctl() on the file descriptor returned by a previous open(). More... | |
virtual Addr | mmap (Process *p, ThreadContext *tc, Addr start, uint64_t length, int prot, int tgtFlags, int tgtFd, int offset) |
Virtual method, invoked when the user program calls mmap() on the file descriptor returned by a previous open(). More... | |
![]() | |
const Params * | params () const |
SimObject (const Params *_params) | |
virtual | ~SimObject () |
virtual const std::string | name () const |
virtual void | init () |
init() is called after all C++ SimObjects have been created and all ports are connected. More... | |
virtual void | loadState (CheckpointIn &cp) |
loadState() is called on each SimObject when restoring from a checkpoint. More... | |
virtual void | initState () |
initState() is called on each SimObject when not restoring from a checkpoint. More... | |
virtual void | regStats () |
Register statistics for this object. More... | |
virtual void | resetStats () |
Reset statistics associated with this object. More... | |
virtual void | regProbePoints () |
Register probe points for this object. More... | |
virtual void | regProbeListeners () |
Register probe listeners for this object. More... | |
ProbeManager * | getProbeManager () |
Get the probe manager for this object. More... | |
virtual void | startup () |
startup() is the final initialization call before simulation. More... | |
DrainState | drain () override |
Provide a default implementation of the drain interface for objects that don't need draining. More... | |
virtual void | memWriteback () |
Write back dirty buffers to memory using functional writes. More... | |
virtual void | memInvalidate () |
Invalidate the contents of memory buffers. More... | |
void | serialize (CheckpointOut &cp) const override |
Serialize an object. More... | |
void | unserialize (CheckpointIn &cp) override |
Unserialize an object. More... | |
![]() | |
EventManager (EventManager &em) | |
EventManager (EventManager *em) | |
EventManager (EventQueue *eq) | |
EventQueue * | eventQueue () const |
void | schedule (Event &event, Tick when) |
void | deschedule (Event &event) |
void | reschedule (Event &event, Tick when, bool always=false) |
void | schedule (Event *event, Tick when) |
void | deschedule (Event *event) |
void | reschedule (Event *event, Tick when, bool always=false) |
void | wakeupEventQueue (Tick when=(Tick)-1) |
void | setCurTick (Tick newVal) |
![]() | |
Serializable () | |
virtual | ~Serializable () |
void | serializeSection (CheckpointOut &cp, const char *name) const |
Serialize an object into a new section. More... | |
void | serializeSection (CheckpointOut &cp, const std::string &name) const |
void | unserializeSection (CheckpointIn &cp, const char *name) |
Unserialize an a child object. More... | |
void | unserializeSection (CheckpointIn &cp, const std::string &name) |
![]() | |
DrainState | drainState () const |
Return the current drain state of an object. More... | |
virtual void | notifyFork () |
Notify a child process of a fork. More... | |
Protected Attributes | |
const std::string & | filename |
filename for opening this driver (under /dev) More... | |
![]() | |
const SimObjectParams * | _params |
Cached copy of the object parameters. More... | |
![]() | |
EventQueue * | eventq |
A pointer to this object's event queue. More... | |
Additional Inherited Members | |
![]() | |
typedef SimObjectParams | Params |
![]() | |
static void | serializeAll (CheckpointOut &cp) |
Serialize all SimObjects in the system. More... | |
static SimObject * | find (const char *name) |
Find the SimObject with the given name and return a pointer to it. More... | |
![]() | |
static const std::string & | currentSection () |
Get the fully-qualified name of the active section. More... | |
static void | serializeAll (const std::string &cpt_dir) |
static void | unserializeGlobals (CheckpointIn &cp) |
![]() | |
static int | ckptCount = 0 |
static int | ckptMaxCount = 0 |
static int | ckptPrevCount = -1 |
![]() | |
Drainable () | |
virtual | ~Drainable () |
virtual void | drainResume () |
Resume execution after a successful drain. More... | |
void | signalDrainDone () const |
Signal that an object is drained. More... | |
EmulatedDriver is an abstract base class for fake SE-mode device drivers.
Specific drivers that allow applications to communicate with simulated hardware inside gem5 can be created by deriving from this class and overriding the abstract virtual methods.
Currently only open(), ioctl(), and mmap() calls are supported, but other calls (e.g., read(), write()) could be added as needed.
Definition at line 52 of file emul_driver.hh.
|
inline |
Definition at line 61 of file emul_driver.hh.
|
pure virtual |
Abstract method, invoked when the user program calls ioctl() on the file descriptor returned by a previous open().
The parameters are the same as those passed in to ioctlFunc() (q.v.).
Implemented in ClDriver.
Referenced by ioctlFunc().
|
inline |
Check for a match with this driver's filename.
Definition at line 69 of file emul_driver.hh.
References filename.
|
inlinevirtual |
Virtual method, invoked when the user program calls mmap() on the file descriptor returned by a previous open().
The parameters are the same as those passed in to mmapFunc() (q.v.).
Definition at line 96 of file emul_driver.hh.
Referenced by mmapImpl().
|
pure virtual |
Abstract method, invoked when the user program calls open() on the device driver.
The parameters are the same as those passed to openFunc() (q.v.).
Implemented in ClDriver.
Referenced by openImpl().
|
protected |
filename for opening this driver (under /dev)
Definition at line 58 of file emul_driver.hh.
Referenced by match(), and ClDriver::open().