X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=kitten%2Fuser%2Fliblwk%2Fpmem.c;fp=kitten%2Fuser%2Fliblwk%2Fpmem.c;h=800ffaf587a4175a7bd7068e7fbdf3b90c1221f9;hb=66a1a4c7a9edcd7d8bc207aca093d694a6e6b5b2;hp=0000000000000000000000000000000000000000;hpb=f7cf9c19ecb0a589dd45ae0d2c91814bd3c2acc2;p=palacios.git

diff --git a/kitten/user/liblwk/pmem.c b/kitten/user/liblwk/pmem.c
new file mode 100644
index 0000000..800ffaf
--- /dev/null
+++ b/kitten/user/liblwk/pmem.c
@@ -0,0 +1,67 @@
+/* Copyright (c) 2008, Sandia National Laboratories */
+
+#include <lwk/liblwk.h>
+
+const char *
+pmem_type_to_string(pmem_type_t type)
+{
+	switch(type) {
+		case PMEM_TYPE_BOOTMEM:     return "BOOTMEM";     break;
+		case PMEM_TYPE_BIGPHYSAREA: return "BIGPHYSAREA"; break;
+		case PMEM_TYPE_INITRD:      return "INITRD";      break;
+		case PMEM_TYPE_INIT_TASK:   return "INIT_TASK";   break;
+		case PMEM_TYPE_KMEM:        return "KMEM";        break;
+		case PMEM_TYPE_UMEM:        return "UMEM";        break;
+	}
+	return "UNKNOWN";
+}
+
+void
+pmem_region_unset_all(struct pmem_region *rgn)
+{
+	rgn->type_is_set      = false;
+	rgn->lgroup_is_set    = false;
+	rgn->allocated_is_set = false;
+	rgn->name_is_set      = false;
+}
+
+int
+pmem_alloc_umem(size_t size, size_t alignment, struct pmem_region *rgn)
+{
+	struct pmem_region constraint, result;
+
+	/* Find and allocate a chunk of PMEM_TYPE_UMEM physical memory */
+	pmem_region_unset_all(&constraint);
+	constraint.start     = 0;
+	constraint.end       = (paddr_t)(-1);
+	constraint.type      = PMEM_TYPE_UMEM; constraint.type_is_set = true;
+	constraint.allocated = false;          constraint.allocated_is_set = true;
+
+	if (pmem_alloc(size, alignment, &constraint, &result))
+		return -ENOMEM;
+
+	*rgn = result;
+	return 0;
+}
+
+bool
+pmem_is_umem(paddr_t start, size_t extent)
+{
+	struct pmem_region query, result;
+	int status;
+
+	pmem_region_unset_all(&query);
+	query.start = start;
+	query.end   = start + extent;
+	query.type  = PMEM_TYPE_UMEM; query.type_is_set = true; 
+	result.end  = 0;
+
+	while ((status = pmem_query(&query, &result)) == 0) {
+		if (result.start != query.start)
+			return false;
+		if (result.end == query.end)
+			break;
+		query.start = result.end;
+	}
+	return (status) ? false : true;
+}