usbehci: initial support for usb on zynq, remove uncached.h

the following hooks have been added to the ehci Ctlr
structore to handle cache coherency (on arm):

	void*	(*tdalloc)(ulong,int,ulong);
	void*	(*dmaalloc)(ulong);
	void	(*dmafree)(void*);
	void	(*dmaflush)(int,void*,ulong);

tdalloc() is used to allocate descriptors and the periodic
frame schedule array. on arm, this needs to return uncached
memory. tdalloc()ed memory is never freed.

dmaalloc()/dmafree() is used for io buffers. this can return
cached memory when when hardware maintains cache coherency (pc)
or dmaflush() is provided to flush/invalidate the cache (zynq),
otherwise needs to return uncached memory.

dmaflush() is used to flush/invalidate the cache. the first
argument tells us if we need to flush (non zero) or
invalidate (zero).

uncached.h is gone now. this change makes the handling explicit.

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/src/9/kw/ucalloc.c b/sys/src/9/kw/ucalloc.c
index 37e8564c0..f7d142bad 100644
--- a/sys/src/9/kw/ucalloc.c
+++ b/sys/src/9/kw/ucalloc.c
@@ -127,7 +127,7 @@ ucalloc(usize size)
 }
 
 void*
-ucallocalign(usize size, int align, int span)
+ucallocalign(usize size, int align, usize span)
 {
 	assert(size < ucpool.minarena-128);