Changeset 478e243 in mainline for uspace/drv/bus/usb/ehci/utils/malloc32.h

Timestamp:

2014-01-22T00:00:18Z (10 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

64c96b9

Parents:

bdddc9d

Message:

ehci: Initialize and start the HC

File:

• uspace/drv/bus/usb/ehci/utils/malloc32.h (modified) (3 diffs)

uspace/drv/bus/usb/ehci/utils/malloc32.h

@@ -36 +36 @@
 
 #include <as.h>
+#include <ddi.h>
 #include <errno.h>
 #include <stdlib.h>
@@ -44 +45 @@
  * buffers do not have to be aligned.
  */
-#define EHCI_ALIGN 32
+#define EHCI_ALIGN   32
+
+#define EHCI_REQUIRED_PAGE_SIZE   4096
 
 /** Get physical address translation
@@ -76 +79 @@
 static inline void free32(void *addr)
         { free(addr); }
+
+/** Create 4KB page mapping
+ *
+ * @return Address of the mapped page, NULL on failure.
+ */
+static inline void *get_page(void)
+{
+        uintptr_t phys;
+        void *address;
+
+        const int ret = dmamem_map_anonymous(EHCI_REQUIRED_PAGE_SIZE,
+            DMAMEM_4GiB, AS_AREA_READ | AS_AREA_WRITE, 0, &phys,
+            &address);
+
+        return ((ret == EOK) ? address : NULL);
+}
+
+static inline void return_page(void *page)
+{
+        dmamem_unmap_anonymous(page);
+}
 #endif
 /**