Changeset f8ddd17 in mainline for kernel/generic/include/ddi/ddi.h

Timestamp:

2006-12-09T20:20:50Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

b82a13c

Parents:

9ab9c2ec

Message:

Rework support for virtually indexed cache.
Instead of repeatedly flushing the data cache, which was a huge overkill, refuse to create an illegal address alias
in the kernel (again) and allocate appropriate page color in userspace instead. Extend the detection also to
SYS_PHYSMEM_MAP syscall.

Add support for tracking physical memory areas mappable by SYS_PHYSMEM_MAP.

Lots of coding style changes.

File:

• kernel/generic/include/ddi/ddi.h (modified) (1 diff)

kernel/generic/include/ddi/ddi.h

@@ -40 +40 @@
 #include <typedefs.h>
 
-unative_t sys_physmem_map(unative_t phys_base, unative_t virt_base, unative_t pages, 
-                         unative_t flags);
+/** Structure representing contiguous physical memory area. */
+typedef struct {
+        uintptr_t pbase;        /**< Physical base of the area. */
+        uintptr_t vbase;        /**< Virtual base of the area. */
+        count_t frames;         /**< Number of frames in the area. */
+        bool cacheable;         /**< Cacheability. */
+} parea_t;
+
+extern void ddi_init(void);
+extern void ddi_parea_register(parea_t *parea);
+
+extern unative_t sys_physmem_map(unative_t phys_base, unative_t virt_base,
+        unative_t pages, unative_t flags);
 extern unative_t sys_iospace_enable(ddi_ioarg_t *uspace_io_arg);
 extern unative_t sys_preempt_control(int enable);