Changeset 110 for trunk/hal/x86_64

Timestamp:

Jun 30, 2017, 9:56:38 AM (7 years ago)

Author:

max@…

Message:

add some code for ppm_init

File:

• trunk/hal/x86_64/core/hal_ppm.c (modified) (3 diffs)

trunk/hal/x86_64/core/hal_ppm.c

@@ -1 +1 @@
 /*
- * hal_gpt.C - Generic Physcal Page Table API implementation for the TSAR archtecture.
+ * hal_ppm.c - Generic Physical Page Manager API implementation for x86
  *
- * Authors  Alain Greiner (2016,2017)
- * 
- *
- * Copyright (c) UPMC Sorbonne Universites
+ * Copyright (c) 2017 Maxime Villard
  *
  * This file is part of ALMOS-MKH.
@@ -19 +16 @@
  *
  * You should have received a copy of the GNU General Public License
- * along with ALMOS-MKH; if not, write to the Free Software Foundation,
+ * along with ALMOS-MKH.; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
@@ -37 +34 @@
 #include <hal_internal.h>
 
-error_t  hal_ppm_init( boot_info_t * info )
+error_t hal_ppm_init(boot_info_t *info)
 {
+        size_t i;
+
+        // get relevant info from boot_info structure
+        uint32_t pages_nr         = info->pages_nr;
+        uint32_t pages_tbl_offset = info->pages_offset;
+        uint32_t rsvd_nr          = info->rsvd_nr;
+
+        // get pointer on local Physical Page Manager
+        ppm_t * ppm = &LOCAL_CLUSTER->ppm;
+
+        // initialize lock protecting the free_pages[] lists
+        spinlock_init( &ppm->free_lock );
+
+        // initialize lock protecting the dirty_pages list
+        spinlock_init( &ppm->dirty_lock );
+
+        // initialize all free_pages[] lists as empty
+        for( i = 0 ; i < CONFIG_PPM_MAX_ORDER ; i++ )
+        {
+                list_root_init( &ppm->free_pages_root[i] );
+                ppm->free_pages_nr[i] = 0;
+        }
+
+        // TODO
+
         x86_panic((char *)__func__);
         return 0;