Provide basic glue to allow syscons to be used on MIPS, modelled

on PowerPC support.  This was clearly not something syscons was
designed to do (very specific assumptions about the nature of VGA
consoles on PCs), but fortunately others have long since blazed
the way on making it work regardless of that.

Sponsored by:	DARPA, AFRL

1 files changed, 23 insertions, 0 deletions

diff --git a/sys/dev/fb/fbreg.h b/sys/dev/fb/fbreg.h
index c9689d3..a844c56 100644
--- a/sys/dev/fb/fbreg.h
+++ b/sys/dev/fb/fbreg.h
@@ -92,6 +92,29 @@ void ofwfb_fillw(int pat, void *base, size_t cnt);
 u_int16_t ofwfb_readw(u_int16_t *addr);
 void ofwfb_writew(u_int16_t *addr, u_int16_t val);
 
+#elif defined(__mips__)
+
+/*
+ * Use amd64/i386-like settings under the assumption that MIPS-based display
+ * drivers will have to add a level of indirection between a syscons-managed
+ * frame buffer and the actual video hardware.  We are forced to do this
+ * because syscons doesn't carry around required busspace handles and tags to
+ * use here.  This is only really a problem for true VGA devices hooked up to
+ * MIPS, as others will be performing a translation anyway.
+ */
+#define bcopy_io(s, d, c)	memcpy((void *)(d), (void *)(s), (c))
+#define bcopy_toio(s, d, c)	memcpy((void *)(d), (void *)(s), (c))
+#define bcopy_fromio(s, d, c)	memcpy((void *)(d), (void *)(s), (c))
+#define bzero_io(d, c)		memset((void *)(d), 0, (c))
+#define fill_io(p, d, c)	memset((void *)(d), (p), (c))
+static __inline void
+fillw(int val, uint16_t *buf, size_t size)
+{
+	while (size--)
+		*buf++ = val;
+}
+#define fillw_io(p, d, c)	fillw((p), (void *)(d), (c))
+
 #else /* !__i386__ && !__amd64__ && !__ia64__ && !__sparc64__ && !__powerpc__ */
 #define bcopy_io(s, d, c)	memcpy_io((d), (s), (c))
 #define bcopy_toio(s, d, c)	memcpy_toio((d), (void *)(s), (c))