X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/45e1f8b055043e54be35462852ab6649d634da7c..c166bd62fbb907f95f79f621e2a2fb4fdde08e01:/lunaix-os/kernel/mm/mmio.c

diff --git a/lunaix-os/kernel/mm/mmio.c b/lunaix-os/kernel/mm/mmio.c
index cac4a89..b91ab0e 100644
--- a/lunaix-os/kernel/mm/mmio.c
+++ b/lunaix-os/kernel/mm/mmio.c
@@ -1,28 +1,34 @@
 #include <lunaix/mm/mmio.h>
-#include <lunaix/mm/pmm.h>
-#include <lunaix/mm/vmm.h>
+#include <lunaix/mm/page.h>
 #include <lunaix/spike.h>
 
 void*
 ioremap(ptr_t paddr, u32_t size)
 {
-    void* ptr = vmm_vmap(paddr, size, PG_PREM_RW | PG_DISABLE_CACHE);
+    // FIXME implement a page policy interface allow to decouple the 
+    //       arch-dependent caching behaviour
 
-    if (ptr) {
-        pmm_mark_chunk_occupied(KERNEL_PID,
-                                paddr >> PG_SIZE_BITS,
-                                CEIL(size, PG_SIZE_BITS),
-                                PP_FGLOCKED);
-    }
+    pfn_t start = pfn(paddr);
+    size_t npages = leaf_count(size);
+    
+    // Ensure the range is reservable (not already in use)
+    assert(pmm_onhold_range(start, npages));
 
-    return ptr;
+    return (void*)vmap_range(start, npages, KERNEL_DATA);
 }
 
 void
 iounmap(ptr_t vaddr, u32_t size)
 {
-    for (size_t i = 0; i < size; i += PG_SIZE) {
-        ptr_t paddr = vmm_del_mapping(VMS_SELF, vaddr + i);
-        pmm_free_page(KERNEL_PID, paddr);
-    }
+    // FIXME
+    fail("need fix");
+
+    // pte_t* ptep = mkptep_va(VMS_SELF, vaddr);
+    // for (size_t i = 0; i < size; i += PAGE_SIZE, ptep++) {
+    //     pte_t pte = pte_at(ptep);
+
+    //     set_pte(ptep, null_pte);
+    //     if (pte_isloaded(pte))
+    //         return_page(ppage_pa(pte_paddr(pte)));
+    // }
 }
\ No newline at end of file