ALSA: ctxfi - Remove PAGE_SIZE limitation
Remove the limitation of PAGE_SIZE to be 4k by defining the own
page size and macros for 4k. 8kb page size could be natively supported,
but it's disabled right now for simplicity.
Also, clean up using upper_32_bits() macro.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/ctxfi/ctvmem.h b/sound/pci/ctxfi/ctvmem.h
index 618952e..17d2d37 100644
--- a/sound/pci/ctxfi/ctvmem.h
+++ b/sound/pci/ctxfi/ctvmem.h
@@ -23,6 +23,14 @@
#include <linux/mutex.h>
#include <linux/list.h>
+/* The chip can handle the page table of 4k pages
+ * (emu20k1 can handle even 8k pages, but we don't use it right now)
+ */
+#define CT_PAGE_SIZE 4096
+#define CT_PAGE_SHIFT 12
+#define CT_PAGE_MASK (~(PAGE_SIZE - 1))
+#define CT_PAGE_ALIGN(addr) ALIGN(addr, CT_PAGE_SIZE)
+
struct ct_vm_block {
unsigned int addr; /* starting logical addr of this block */
unsigned int size; /* size of this device virtual mem block */