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>

1 files changed, 8 insertions, 0 deletions

diff --git a/sound/pci/ctxfi/ctvmem.h b/sound/pci/ctxfi/ctvmem.h
index 618952efa5b3..17d2d37a9ea7 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 */