Unifying the Lunaix's Physical Memory Model (#28)

[lunaix-os.git] / lunaix-os / kernel / mm / mmio.c

diff --git a/lunaix-os/kernel/mm/mmio.c b/lunaix-os/kernel/mm/mmio.c
index 5e0d01e28601b321c94d62914e0d26b006715655..b91ab0e425c491a79f1e334aa1090d3aa4e728ea 100644 (file)
--- a/lunaix-os/kernel/mm/mmio.c
+++ b/lunaix-os/kernel/mm/mmio.c
@@ -1,18 +1,34 @@
 #include <lunaix/mm/mmio.h>
 #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*
 
 void*

-ioremap(uintptr_t paddr, uint32_t size)
+ioremap(ptr_t paddr, u32_t size)

 {
 {

-    return vmm_vmap(paddr, size, PG_PREM_RW | PG_DISABLE_CACHE);
+    // FIXME implement a page policy interface allow to decouple the 
+    //       arch-dependent caching behaviour
+
+    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 (void*)vmap_range(start, npages, KERNEL_DATA);

 }
 
 }
 

-void*
-iounmap(uintptr_t vaddr, uint32_t size)
+void
+iounmap(ptr_t vaddr, u32_t size)

 {
 {

-    for (size_t i = 0; i < size; i += PG_SIZE) {
-        uintptr_t paddr = vmm_del_mapping(PD_REFERENCED, 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)));
+    // }

 }
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 }
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