arch: i386: pmem: refactor the physical MM

Refactor the physical memory manager to be dramatically simpler. The new
design uses only a single freelist, and only uses temporary mappings
where needed.

Signed-off-by: Danny Holman <dholman@gymli.org>

1 files changed, 3 insertions, 12 deletions

diff --git a/arch/i386/include/kernel/pmem.h b/arch/i386/include/kernel/pmem.h
index ddd9c8b..da169c7 100644
--- a/arch/i386/include/kernel/pmem.h
+++ b/arch/i386/include/kernel/pmem.h
@@ -4,25 +4,16 @@
 #include <kernel/multiboot.h>
 #include <stdint.h>
 
-#define PFA_BLOCK_FREE  1
-#define PFA_BLOCK_ALLOC 3
-
 #define PFA_ALLOC_ERR   0xFFFFFFFF
 
 struct pfa_page {
         struct pfa_page *next;
 };
 
-struct pfa_zone {
-        uintptr_t start;
-        uintptr_t size;
-        struct pfa_page *freelist;
-};
-
-int pfa_init(struct mboot_info *header);
+void pfa_init(struct mboot_info *header);
 
 uintptr_t pfa_alloc(void);
-void pfa_free(struct pfa_zone *zone, uintptr_t paddr);
-void pfa_free_range(struct pfa_zone *zone, uintptr_t pstart, uintptr_t pend);
+void pfa_free(uintptr_t paddr);
+void pfa_free_range(uintptr_t start, uintptr_t end);
 
 #endif