Kernel - Expose thread timer for EVENT_TIMER, multiple sleepers for workqueue, cleanu...

[tpg/acess2.git] / KernelLand / Kernel / include / acess.h

diff --git a/KernelLand/Kernel/include/acess.h b/KernelLand/Kernel/include/acess.h
index 8c5e454..fe1a0f9 100644 (file)
--- a/KernelLand/Kernel/include/acess.h
+++ b/KernelLand/Kernel/include/acess.h
@@ -10,8 +10,13 @@
  */
 
 #include <stddef.h>
+#include <stdbool.h>
 #include <arch.h>
 
+#ifndef HALT_CPU
+# define HALT_CPU()    for(;;);
+#endif
+
 //! Pack a structure
 #define PACKED __attribute__((packed))
 //! Mark a function as not returning
@@ -47,8 +52,8 @@ typedef Uint32        tGID;   //!< Group ID Type
 typedef Sint64 tTimestamp;     //!< Timestamp (miliseconds since 00:00 1 Jan 1970)
 typedef Sint64 tTime;  //!< Same again
 typedef struct sShortSpinlock  tShortSpinlock; //!< Opaque (kinda) spinlock
-typedef int    bool;   //!< Boolean type
 typedef Uint64 off_t;  //!< VFS Offset
+typedef struct { char _[PAGE_SIZE];}   tPage;  // Representation of a page for pointer arithmatic
 
 // --- Helper Macros ---
 /**
@@ -184,19 +189,25 @@ extern Uint64     inq(Uint16 Port);
  * \param VAddr        Virtual Address to allocate at
  * \return Physical address allocated
  */
-extern tPAddr  MM_Allocate(tVAddr VAddr) __attribute__ ((warn_unused_result));
+extern tPAddr  MM_Allocate(volatile void *VAddr) __attribute__ ((warn_unused_result));
+/**
+ * \breif Allocate a zeroed COW page to \a VAddr
+ * \param VAddr        Virtual address to allocate at
+ * \return Physical address allocated (don't cache)
+ */
+extern void    MM_AllocateZero(volatile void *VAddr);
 /**
  * \brief Deallocate a page
  * \param VAddr        Virtual address to unmap
  */
-extern void    MM_Deallocate(tVAddr VAddr);
+extern void    MM_Deallocate(volatile void *VAddr);
 /**
  * \brief Map a physical page at \a PAddr to \a VAddr
  * \param VAddr        Target virtual address
  * \param PAddr        Physical address to map
  * \return Boolean Success
  */
-extern int     MM_Map(tVAddr VAddr, tPAddr PAddr);
+extern int     MM_Map(volatile void * VAddr, tPAddr PAddr);
 /**
  * \brief Get the physical address of \a Addr
  * \param Addr Address of the page to get the physical address of
@@ -209,19 +220,19 @@ extern tPAddr     MM_GetPhysAddr(volatile const void *Addr);
  * \param Flags New flags value
  * \param Mask Flags to set
  */
-extern void    MM_SetFlags(tVAddr VAddr, Uint Flags, Uint Mask);
+extern void    MM_SetFlags(volatile void *VAddr, Uint Flags, Uint Mask);
 /**
  * \brief Get the flags on a flag
  * \param VAddr        Virtual address of page
  * \return Flags value of the page
  */
-extern Uint    MM_GetFlags(tVAddr VAddr);
+extern Uint    MM_GetFlags(volatile const void *VAddr);
 /**
  * \brief Checks is a memory range is user accessable
  * \param VAddr        Base address to check
  * \return 1 if the memory is all user-accessable, 0 otherwise
  */
-#define MM_IsUser(VAddr)       (!(MM_GetFlags((tVAddr)(VAddr))&MM_PFLAG_KERNEL))
+#define MM_IsUser(VAddr)       (!(MM_GetFlags((const void*)(VAddr))&MM_PFLAG_KERNEL))
 /**
  * \brief Temporarily map a page into the address space
  * \param PAddr        Physical addres to map
@@ -253,7 +264,7 @@ extern void *MM_AllocDMA(int Pages, int MaxBits, tPAddr *PhysAddr);
  * \param VAddr        Virtual address allocate by ::MM_MapHWPages or ::MM_AllocDMA
  * \param Number       Number of pages to free
  */
-extern void    MM_UnmapHWPages(tVAddr VAddr, Uint Number);
+extern void    MM_UnmapHWPages(volatile void *VAddr, Uint Number);
 /**
  * \brief Allocate a single physical page
  * \return Physical address allocated