X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/e8e64a4f1d76aaeac3defa13243505cccd25c078..b632f535c4a6882bdca0317fb88cbe6e165f24eb:/lunaix-os/kernel/mm/vmap.c?ds=sidebyside

diff --git a/lunaix-os/kernel/mm/vmap.c b/lunaix-os/kernel/mm/vmap.c
index 5df524d..4b1b311 100644
--- a/lunaix-os/kernel/mm/vmap.c
+++ b/lunaix-os/kernel/mm/vmap.c
@@ -2,19 +2,18 @@
 #include <lunaix/mm/vmm.h>
 #include <lunaix/spike.h>
 
-#define VMAP_START PG_MOUNT_BASE + MEM_4MB
-#define VMAP_END PD_REFERENCED
+#include <sys/mm/mempart.h>
 
-static uintptr_t start = VMAP_START;
+static ptr_t start = VMAP;
 
 void*
-vmm_vmap(uintptr_t paddr, size_t size, pt_attr attr)
+vmm_vmap(ptr_t paddr, size_t size, pt_attr attr)
 {
     // next fit
     assert_msg((paddr & 0xfff) == 0, "vmap: bad alignment");
     size = ROUNDUP(size, PG_SIZE);
 
-    uintptr_t current_addr = start;
+    ptr_t current_addr = start;
     size_t examed_size = 0, wrapped = 0;
     x86_page_table* pd = (x86_page_table*)L1_BASE_VADDR;
 
@@ -26,18 +25,18 @@ vmm_vmap(uintptr_t paddr, size_t size, pt_attr attr)
             current_addr = (current_addr & 0xffc00000) + MEM_4MB;
         } else {
             x86_page_table* ptd = (x86_page_table*)(L2_VADDR(l1inx));
-            size_t i = L2_INDEX(current_addr);
-            for (; i < 1024 && examed_size < size; i++) {
+            size_t i = L2_INDEX(current_addr), j = 0;
+            for (; i < PG_MAX_ENTRIES && examed_size < size; i++, j++) {
                 if (!ptd->entry[i]) {
                     examed_size += PG_SIZE;
                 } else if (examed_size) {
                     // found a discontinuity, start from beginning
                     examed_size = 0;
-                    i++;
+                    j++;
                     break;
                 }
             }
-            current_addr += i << 12;
+            current_addr += j << 12;
         }
 
         if (examed_size >= size) {
@@ -46,16 +45,17 @@ vmm_vmap(uintptr_t paddr, size_t size, pt_attr attr)
 
         if (current_addr >= VMAP_END) {
             wrapped = 1;
-            current_addr = VMAP_START;
+            examed_size = 0;
+            current_addr = VMAP;
         }
     }
-    panick("vmm: out of memory");
+
+    return NULL;
 
 done:
-    uintptr_t alloc_begin = current_addr - examed_size;
+    ptr_t alloc_begin = current_addr - examed_size;
     for (size_t i = 0; i < size; i += PG_SIZE) {
-        vmm_set_mapping(
-          PD_REFERENCED, alloc_begin + i, paddr + i, PG_PREM_RW, 0);
+        vmm_set_mapping(VMS_SELF, alloc_begin + i, paddr + i, attr, 0);
         pmm_ref_page(KERNEL_PID, paddr + i);
     }
     start = alloc_begin + size;