mirror of https://github.com/acidanthera/audk.git
Use linked list to replace the current array solution to store the periodic SMI handlers to support more than 8 periodic SMI handlers.
Signed-off-by: niruiyu Reviewed-by: xdu2 git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12127 6f19259b-4bc3-4df7-8a09-765794883524
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@ -27,10 +27,8 @@
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#include <Library/SmmPeriodicSmiLib.h>
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#include <Library/SmmPeriodicSmiLib.h>
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///
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///
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/// Define the number of periodic SMI handler entries that should be allocated in
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/// Define the number of periodic SMI handler entries that should be allocated to the list
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/// the constructor for gPeriodicSmiLibraryHandlers and also use this value as the
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/// of free periodic SMI handlers when the list of free periodic SMI handlers is empty.
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/// number of entries to add to gPeriodicSmiLibraryHandlers when gPeriodicSmiLibraryHandlers
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/// is full.
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///
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///
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#define PERIODIC_SMI_LIBRARY_ALLOCATE_SIZE 0x08
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#define PERIODIC_SMI_LIBRARY_ALLOCATE_SIZE 0x08
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@ -48,6 +46,10 @@ typedef struct {
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///
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///
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UINT32 Signature;
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UINT32 Signature;
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///
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///
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/// The link entry to be inserted to the list of periodic SMI handlers.
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///
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LIST_ENTRY Link;
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///
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/// The dispatch function to called to invoke an enabled periodic SMI handler.
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/// The dispatch function to called to invoke an enabled periodic SMI handler.
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///
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///
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PERIODIC_SMI_LIBRARY_HANDLER DispatchFunction;
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PERIODIC_SMI_LIBRARY_HANDLER DispatchFunction;
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@ -155,6 +157,19 @@ typedef struct {
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT_SIGNATURE \
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT_SIGNATURE \
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)
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)
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/**
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Macro that returns a pointer to a PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT
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structure based on a pointer to a Link field.
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**/
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#define PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT_FROM_LINK(a) \
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CR ( \
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a, \
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT, \
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Link, \
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT_SIGNATURE \
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)
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///
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///
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/// Pointer to the SMM Periodic Timer Disatch Protocol that was located in the constuctor.
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/// Pointer to the SMM Periodic Timer Disatch Protocol that was located in the constuctor.
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///
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///
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@ -170,21 +185,22 @@ EFI_SMM_PERIODIC_TIMER_DISPATCH2_PROTOCOL *gSmmPeriodicTimerDispatch2
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UINT64 *gSmiTickPeriodTable = NULL;
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UINT64 *gSmiTickPeriodTable = NULL;
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///
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///
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/// The number entries in gPeriodicSmiLibraryHandlers
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/// Linked list of free periodic SMI handlers that this library can use.
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///
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///
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UINTN gNumberOfPeriodicSmiLibraryHandlers = 0;
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LIST_ENTRY gFreePeriodicSmiLibraryHandlers =
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INITIALIZE_LIST_HEAD_VARIABLE (gFreePeriodicSmiLibraryHandlers);
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///
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///
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/// Table of periodic SMI handlers that this library is currently managing. This
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/// Linked list of periodic SMI handlers that this library is currently managing.
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/// table is allocated using AllocatePool()
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///
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///
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT *gPeriodicSmiLibraryHandlers = NULL;
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LIST_ENTRY gPeriodicSmiLibraryHandlers =
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INITIALIZE_LIST_HEAD_VARIABLE (gPeriodicSmiLibraryHandlers);
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///
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///
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/// The index of gPeriodicSmiLibraryHandlers that is currently being executed.
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/// Pointer to the periodic SMI handler that is currently being executed.
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/// Is set to -1 if no periodic SMI handler is currently being executed.
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/// Is set to NULL if no periodic SMI handler is currently being executed.
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///
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///
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INTN gActivePeriodicSmiLibraryHandlerIndex = -1;
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT *gActivePeriodicSmiLibraryHandler = NULL;
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/**
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/**
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Internal worker function that returns a pointer to the
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Internal worker function that returns a pointer to the
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@ -202,18 +218,7 @@ GetActivePeriodicSmiLibraryHandler (
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VOID
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VOID
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)
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)
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{
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{
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if (gActivePeriodicSmiLibraryHandlerIndex < 0) {
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return gActivePeriodicSmiLibraryHandler;
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//
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// Return NULL if index is negative, which means that there is no active
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// periodic SMI handler.
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//
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return NULL;
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}
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//
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// Return a pointer to the active periodic SMI handler context
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//
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return &gPeriodicSmiLibraryHandlers[gActivePeriodicSmiLibraryHandlerIndex];
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}
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}
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/**
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/**
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@ -240,10 +245,11 @@ GetActivePeriodicSmiLibraryHandler (
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**/
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**/
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT *
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT *
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LookupPeriodicSmiLibraryHandler (
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LookupPeriodicSmiLibraryHandler (
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IN EFI_HANDLE DispatchHandle OPTIONAL
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IN EFI_HANDLE DispatchHandle OPTIONAL
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)
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)
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{
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{
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UINTN Index;
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LIST_ENTRY *Link;
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT *PeriodicSmiLibraryHandler;
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//
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//
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// If DispatchHandle is NULL, then return the active periodic SMI handler
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// If DispatchHandle is NULL, then return the active periodic SMI handler
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@ -255,9 +261,14 @@ LookupPeriodicSmiLibraryHandler (
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//
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//
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// Search the periodic SMI handler entries for a a matching DispatchHandle
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// Search the periodic SMI handler entries for a a matching DispatchHandle
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//
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//
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for (Index = 0; Index < gNumberOfPeriodicSmiLibraryHandlers; Index++) {
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for ( Link = GetFirstNode (&gPeriodicSmiLibraryHandlers)
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if (gPeriodicSmiLibraryHandlers[Index].DispatchHandle == DispatchHandle) {
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; !IsNull (&gPeriodicSmiLibraryHandlers, Link)
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return &gPeriodicSmiLibraryHandlers[Index];
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; Link = GetNextNode (&gPeriodicSmiLibraryHandlers, Link)
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) {
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PeriodicSmiLibraryHandler = PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT_FROM_LINK (Link);
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if (PeriodicSmiLibraryHandler->DispatchHandle == DispatchHandle) {
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return PeriodicSmiLibraryHandler;
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}
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}
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}
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}
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@ -285,15 +296,88 @@ SetActivePeriodicSmiLibraryHandler (
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IN CONST VOID *Context OPTIONAL
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IN CONST VOID *Context OPTIONAL
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)
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)
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{
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{
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT *PeriodicSmiLibraryHandler;
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if (Context == NULL) {
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if (Context == NULL) {
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gActivePeriodicSmiLibraryHandlerIndex = -1;
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gActivePeriodicSmiLibraryHandler = NULL;
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return NULL;
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} else {
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gActivePeriodicSmiLibraryHandler = PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT_FROM_REGISTER_CONTEXT (Context);
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}
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}
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PeriodicSmiLibraryHandler = PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT_FROM_REGISTER_CONTEXT (Context);
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return gActivePeriodicSmiLibraryHandler;
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gActivePeriodicSmiLibraryHandlerIndex = PeriodicSmiLibraryHandler - gPeriodicSmiLibraryHandlers;
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}
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return PeriodicSmiLibraryHandler;
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/**
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Internal worker function that moves the specified periodic SMI handler from the
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list of managed periodic SMI handlers to the list of free periodic SMI handlers.
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@param[in] PeriodicSmiLibraryHandler Pointer to the periodic SMI handler to be reclaimed.
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**/
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VOID
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ReclaimPeriodicSmiLibraryHandler (
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT *PeriodicSmiLibraryHandler
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)
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{
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LIST_ENTRY *Link;
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ASSERT (PeriodicSmiLibraryHandler->DispatchHandle == NULL);
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if (PeriodicSmiLibraryHandler->Stack != NULL) {
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FreePages (
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PeriodicSmiLibraryHandler->Stack,
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EFI_SIZE_TO_PAGES (PeriodicSmiLibraryHandler->StackSize)
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);
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PeriodicSmiLibraryHandler->Stack = NULL;
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}
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RemoveEntryList (&PeriodicSmiLibraryHandler->Link);
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//
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// Insert to gFreePeriodicSmiLibraryHandlers in the reverse order of the address of PeriodicSmiLibraryHandler
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//
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for ( Link = GetFirstNode (&gFreePeriodicSmiLibraryHandlers)
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; !IsNull (&gFreePeriodicSmiLibraryHandlers, Link)
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; Link = GetNextNode (&gFreePeriodicSmiLibraryHandlers, Link)
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) {
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if (Link < &PeriodicSmiLibraryHandler->Link) {
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break;
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}
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}
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InsertTailList (Link, &PeriodicSmiLibraryHandler->Link);
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}
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/**
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Add the additional entries to the list of free periodic SMI handlers.
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The function is assumed to be called only when the list of free periodic SMI
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handlers is empty.
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@retval TRUE The additional entries were added.
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@retval FALSE There was no available resource for the additional entries.
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**/
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BOOLEAN
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EnlargeFreePeriodicSmiLibraryHandlerList (
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VOID
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)
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{
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UINTN Index;
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT *PeriodicSmiLibraryHandlers;
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//
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// The function is assumed to be called only when the list of free periodic SMI library
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// handlers is empty.
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//
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ASSERT (IsListEmpty (&gFreePeriodicSmiLibraryHandlers));
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PeriodicSmiLibraryHandlers = AllocatePool (
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PERIODIC_SMI_LIBRARY_ALLOCATE_SIZE * sizeof (PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT)
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);
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if (PeriodicSmiLibraryHandlers == NULL) {
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return FALSE;
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}
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//
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// Add the entries to the list in the reverse order of the their memory address
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//
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for (Index = 0; Index < PERIODIC_SMI_LIBRARY_ALLOCATE_SIZE; Index++) {
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PeriodicSmiLibraryHandlers[Index].Signature = PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT_SIGNATURE;
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InsertHeadList (&gFreePeriodicSmiLibraryHandlers, &PeriodicSmiLibraryHandlers[Index].Link);
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}
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return TRUE;
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}
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}
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/**
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/**
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VOID
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VOID
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)
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)
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{
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{
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UINTN Index;
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT *PeriodicSmiLibraryHandler;
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PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT *PeriodicSmiLibraryHandler;
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//
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if (IsListEmpty (&gFreePeriodicSmiLibraryHandlers)) {
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// Search for a free entry in gPeriodicSmiLibraryHandlers
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if (!EnlargeFreePeriodicSmiLibraryHandlerList ()) {
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// A free entry must have a NULL DispatchHandle and a NULL Stack.
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//
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for (Index = 0; Index < gNumberOfPeriodicSmiLibraryHandlers; Index++) {
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if (gPeriodicSmiLibraryHandlers[Index].DispatchHandle != NULL) {
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continue;
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}
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if (gPeriodicSmiLibraryHandlers[Index].Stack != NULL) {
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continue;
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}
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return &gPeriodicSmiLibraryHandlers[Index];
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}
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//
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// If no free entries were found, then grow the table of periodic SMI handler entries
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//
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if (Index == gNumberOfPeriodicSmiLibraryHandlers) {
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PeriodicSmiLibraryHandler = ReallocatePool (
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gNumberOfPeriodicSmiLibraryHandlers * sizeof (PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT),
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(gNumberOfPeriodicSmiLibraryHandlers + PERIODIC_SMI_LIBRARY_ALLOCATE_SIZE) * sizeof (PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT),
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gPeriodicSmiLibraryHandlers
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);
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if (PeriodicSmiLibraryHandler == NULL) {
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return NULL;
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return NULL;
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}
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}
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gPeriodicSmiLibraryHandlers = PeriodicSmiLibraryHandler;
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gNumberOfPeriodicSmiLibraryHandlers += PERIODIC_SMI_LIBRARY_ALLOCATE_SIZE;
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}
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}
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return &gPeriodicSmiLibraryHandlers[Index];
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//
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// Get one from the list of free periodic SMI handlers.
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//
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PeriodicSmiLibraryHandler = PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT_FROM_LINK (
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GetFirstNode (&gFreePeriodicSmiLibraryHandlers)
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);
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RemoveEntryList (&PeriodicSmiLibraryHandler->Link);
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InsertTailList (&gPeriodicSmiLibraryHandlers, &PeriodicSmiLibraryHandler->Link);
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return PeriodicSmiLibraryHandler;
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}
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}
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/**
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/**
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@ -809,25 +877,10 @@ PeriodicSmiDispatchFunction (
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}
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}
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//
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//
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// Retrieve the active periodic SMI handler in case the entries were reallocated
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// Reclaim the active periodic SMI handler if it was disabled during the current dispatch.
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// when the active periodic SMI handler was dispatched.
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//
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//
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PeriodicSmiLibraryHandler = GetActivePeriodicSmiLibraryHandler ();
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if (PeriodicSmiLibraryHandler->DispatchHandle == NULL) {
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if (PeriodicSmiLibraryHandler != NULL) {
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ReclaimPeriodicSmiLibraryHandler (PeriodicSmiLibraryHandler);
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//
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// If the active periodic SMI handler was disabled during the current dispatch
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// and the periodic SMI handler was allocated a stack when it was enabled, then
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// free that stack here.
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//
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if (PeriodicSmiLibraryHandler->DispatchHandle == NULL) {
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if (PeriodicSmiLibraryHandler->Stack != NULL) {
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FreePages (
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PeriodicSmiLibraryHandler->Stack,
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EFI_SIZE_TO_PAGES (PeriodicSmiLibraryHandler->StackSize)
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);
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PeriodicSmiLibraryHandler->Stack = NULL;
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}
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}
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}
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}
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//
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//
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@ -924,7 +977,6 @@ PeriodicSmiEnable (
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//
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//
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// Initialize a new periodic SMI handler entry
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// Initialize a new periodic SMI handler entry
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//
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//
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PeriodicSmiLibraryHandler->Signature = PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT_SIGNATURE;
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PeriodicSmiLibraryHandler->YieldFlag = FALSE;
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PeriodicSmiLibraryHandler->YieldFlag = FALSE;
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PeriodicSmiLibraryHandler->DispatchHandle = NULL;
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PeriodicSmiLibraryHandler->DispatchHandle = NULL;
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PeriodicSmiLibraryHandler->DispatchFunction = DispatchFunction;
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PeriodicSmiLibraryHandler->DispatchFunction = DispatchFunction;
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@ -937,6 +989,8 @@ PeriodicSmiEnable (
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return EFI_OUT_OF_RESOURCES;
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return EFI_OUT_OF_RESOURCES;
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}
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}
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ZeroMem (PeriodicSmiLibraryHandler->Stack, PeriodicSmiLibraryHandler->StackSize);
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ZeroMem (PeriodicSmiLibraryHandler->Stack, PeriodicSmiLibraryHandler->StackSize);
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} else {
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PeriodicSmiLibraryHandler->Stack = NULL;
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}
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}
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InitializeSpinLock (&PeriodicSmiLibraryHandler->DispatchLock);
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InitializeSpinLock (&PeriodicSmiLibraryHandler->DispatchLock);
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PeriodicSmiLibraryHandler->PerfomanceCounterRate = GetPerformanceCounterProperties (
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PeriodicSmiLibraryHandler->PerfomanceCounterRate = GetPerformanceCounterProperties (
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@ -951,18 +1005,9 @@ PeriodicSmiEnable (
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&PeriodicSmiLibraryHandler->RegisterContext,
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&PeriodicSmiLibraryHandler->RegisterContext,
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&PeriodicSmiLibraryHandler->DispatchHandle
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&PeriodicSmiLibraryHandler->DispatchHandle
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);
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);
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if (EFI_ERROR (Status) || PeriodicSmiLibraryHandler->DispatchHandle == NULL) {
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if (EFI_ERROR (Status)) {
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//
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// If the registration failed or the handle is invalid, free the stack if one was allocated
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//
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if (PeriodicSmiLibraryHandler->Stack != NULL) {
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FreePages (
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PeriodicSmiLibraryHandler->Stack,
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EFI_SIZE_TO_PAGES (PeriodicSmiLibraryHandler->StackSize)
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);
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PeriodicSmiLibraryHandler->Stack = NULL;
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}
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PeriodicSmiLibraryHandler->DispatchHandle = NULL;
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PeriodicSmiLibraryHandler->DispatchHandle = NULL;
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ReclaimPeriodicSmiLibraryHandler (PeriodicSmiLibraryHandler);
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return EFI_OUT_OF_RESOURCES;
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return EFI_OUT_OF_RESOURCES;
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}
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}
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@ -1021,24 +1066,14 @@ PeriodicSmiDisable (
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}
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}
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|
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//
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//
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// If active periodic SMI handler is not the periodic SMI handler being
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// Mark the entry for the disabled periodic SMI handler as free, and
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// disabled, and the periodic SMI handler being disabled was allocated a
|
// call ReclaimPeriodicSmiLibraryHandler to move it to the list of free
|
||||||
// stack when it was enabled, then free the stack.
|
// periodic SMI handlers.
|
||||||
//
|
|
||||||
if (PeriodicSmiLibraryHandler != GetActivePeriodicSmiLibraryHandler ()) {
|
|
||||||
if (PeriodicSmiLibraryHandler->Stack != NULL) {
|
|
||||||
FreePages (
|
|
||||||
PeriodicSmiLibraryHandler->Stack,
|
|
||||||
EFI_SIZE_TO_PAGES (PeriodicSmiLibraryHandler->StackSize)
|
|
||||||
);
|
|
||||||
PeriodicSmiLibraryHandler->Stack = NULL;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
//
|
|
||||||
// Mark the entry for the disabled periodic SMI handler as free
|
|
||||||
//
|
//
|
||||||
PeriodicSmiLibraryHandler->DispatchHandle = NULL;
|
PeriodicSmiLibraryHandler->DispatchHandle = NULL;
|
||||||
|
if (PeriodicSmiLibraryHandler != GetActivePeriodicSmiLibraryHandler ()) {
|
||||||
|
ReclaimPeriodicSmiLibraryHandler (PeriodicSmiLibraryHandler);
|
||||||
|
}
|
||||||
|
|
||||||
return TRUE;
|
return TRUE;
|
||||||
}
|
}
|
||||||
|
@ -1116,7 +1151,7 @@ SmmPeriodicSmiLibConstructor (
|
||||||
//
|
//
|
||||||
// Allocate buffer for initial set of periodic SMI handlers
|
// Allocate buffer for initial set of periodic SMI handlers
|
||||||
//
|
//
|
||||||
FindFreePeriodicSmiLibraryHandler ();
|
EnlargeFreePeriodicSmiLibraryHandlerList ();
|
||||||
|
|
||||||
return EFI_SUCCESS;
|
return EFI_SUCCESS;
|
||||||
}
|
}
|
||||||
|
@ -1138,7 +1173,9 @@ SmmPeriodicSmiLibDestructor (
|
||||||
IN EFI_SYSTEM_TABLE *SystemTable
|
IN EFI_SYSTEM_TABLE *SystemTable
|
||||||
)
|
)
|
||||||
{
|
{
|
||||||
UINTN Index;
|
LIST_ENTRY *Link;
|
||||||
|
PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT *PeriodicSmiLibraryHandler;
|
||||||
|
UINTN Index;
|
||||||
|
|
||||||
//
|
//
|
||||||
// Free the table of supported periodic SMI tick rates
|
// Free the table of supported periodic SMI tick rates
|
||||||
|
@ -1150,15 +1187,28 @@ SmmPeriodicSmiLibDestructor (
|
||||||
//
|
//
|
||||||
// Disable all periodic SMI handlers
|
// Disable all periodic SMI handlers
|
||||||
//
|
//
|
||||||
for (Index = 0; Index < gNumberOfPeriodicSmiLibraryHandlers; Index++) {
|
for (Link = GetFirstNode (&gPeriodicSmiLibraryHandlers); !IsNull (&gPeriodicSmiLibraryHandlers, Link);) {
|
||||||
PeriodicSmiDisable (gPeriodicSmiLibraryHandlers[Index].DispatchHandle);
|
PeriodicSmiLibraryHandler = PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT_FROM_LINK (Link);
|
||||||
|
Link = GetNextNode (&gPeriodicSmiLibraryHandlers, Link);
|
||||||
|
PeriodicSmiDisable (PeriodicSmiLibraryHandler->DispatchHandle);
|
||||||
}
|
}
|
||||||
|
|
||||||
//
|
//
|
||||||
// Free all the periodic SMI handler entries
|
// Free all the periodic SMI handler entries
|
||||||
//
|
//
|
||||||
if (gPeriodicSmiLibraryHandlers != NULL) {
|
Index = 0;
|
||||||
FreePool (gPeriodicSmiLibraryHandlers);
|
for (Link = GetFirstNode (&gFreePeriodicSmiLibraryHandlers); !IsNull (&gFreePeriodicSmiLibraryHandlers, Link);) {
|
||||||
|
PeriodicSmiLibraryHandler = PERIODIC_SMI_LIBRARY_HANDLER_CONTEXT_FROM_LINK (Link);
|
||||||
|
Link = RemoveEntryList (Link);
|
||||||
|
Index++;
|
||||||
|
//
|
||||||
|
// Because the entries in the list are in the reverse order of the address of PeriodicSmiLibraryHandler and
|
||||||
|
// every PERIODIC_SMI_LIBRARY_ALLOCATE_SIZE entries are in the same pool returned by AllocatePool(),
|
||||||
|
// every PERIODIC_SMI_LIBRARY_ALLOCATE_SIZE'th entry is the header of allocated pool.
|
||||||
|
//
|
||||||
|
if ((Index % PERIODIC_SMI_LIBRARY_ALLOCATE_SIZE) == 0) {
|
||||||
|
FreePool (PeriodicSmiLibraryHandler);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
return EFI_SUCCESS;
|
return EFI_SUCCESS;
|
||||||
|
|
Loading…
Reference in New Issue