Kernel - Planning for IOCache to use pages for cache instead of heap

[tpg/acess2.git] / Kernel / drv / iocache.c

diff --git a/Kernel/drv/iocache.c b/Kernel/drv/iocache.c
index 2b4755c..ba822df 100644 (file)
--- a/Kernel/drv/iocache.c
+++ b/Kernel/drv/iocache.c
@@ -3,6 +3,8 @@
  * - IO Cache
  * 
  * By thePowersGang (John Hodge)
+ * 
+ * TODO: Convert to use spare physical pages instead
  */
 #define DEBUG  0
 #include <acess.h>
@@ -10,6 +12,7 @@
 
 // === TYPES ===
 typedef struct sIOCache_Ent    tIOCache_Ent;
+typedef struct sIOCache_PageInfo       tIOCache_PageInfo;
 
 // === STRUCTURES ===
 struct sIOCache_Ent
@@ -21,6 +24,15 @@ struct sIOCache_Ent
        Uint8   Data[];
 };
 
+struct sIOCache_PageInfo
+{
+       tIOCache_PageInfo       *GlobalNext;
+       tIOCache_PageInfo       *CacheNext;
+       tIOCache        *Owner;
+       tPAddr  BasePhys;
+       Uint64  BaseOffset;
+};
+
 struct sIOCache
 {
        tIOCache        *Next;
@@ -38,6 +50,7 @@ struct sIOCache
 tShortSpinlock glIOCache_Caches;
 tIOCache       *gIOCache_Caches = NULL;
  int   giIOCache_NumCaches = 0;
+tIOCache_PageInfo      *gIOCache_GlobalPages;
 
 // === CODE ===
 /**