[PATCH 2/3] x86: add __raw_read{b,w,l,q} and __raw_write{b,w,l,q}

[Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>]

so we can use __iowrite{32/64} to speedup the framebuffer console scrolling

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
 arch/x86/include/asm/io.h | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index df4bc99ec..189eb9aae 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -21,6 +21,10 @@ build_mmio_read(readb, "b", unsigned char, "=q", :"memory")
 build_mmio_read(readw, "w", unsigned short, "=r", :"memory")
 build_mmio_read(readl, "l", unsigned int, "=r", :"memory")
 
+build_mmio_read(__readb, "b", unsigned char, "=q", )
+build_mmio_read(__readw, "w", unsigned short, "=r", )
+build_mmio_read(__readl, "l", unsigned int, "=r", )
+
 #define build_mmio_write(name, size, type, reg, barrier) \
  static inline void name(type val, volatile void *addr) \
  { asm volatile("mov" size " %0,%1": :reg (val), \
@@ -30,6 +34,10 @@ build_mmio_write(writeb, "b", unsigned char, "q", :"memory")
 build_mmio_write(writew, "w", unsigned short, "r", :"memory")
 build_mmio_write(writel, "l", unsigned int, "r", :"memory")
 
+build_mmio_write(__writeb, "b", unsigned char, "q", )
+build_mmio_write(__writew, "w", unsigned short, "r", )
+build_mmio_write(__writel, "l", unsigned int, "r", )
+
 #define BUILDIO(bwl, bw, type)						\
 static inline void out##bwl(unsigned type value, int port)		\
 {									\
@@ -61,6 +69,31 @@ BUILDIO(b, b, char)
 BUILDIO(w, w, short)
 BUILDIO(l, , int)
 
+#define __raw_readb __readb
+#define __raw_readw __readw
+#define __raw_readl __readl
+
+#define __raw_writeb __writeb
+#define __raw_writew __writew
+#define __raw_writel __writel
+
+#ifdef CONFIG_X86_64
+
+build_mmio_read(readq, "q", unsigned long, "=r", :"memory")
+build_mmio_write(writeq, "q", unsigned long, "r", :"memory")
+
+#define readq_relaxed(a)	readq(a)
+#define writeq_relaxed(v, a)	writeq(v, a)
+
+#define __raw_readq(a)		readq(a)
+#define __raw_writeq(val, addr)	writeq(val, addr)
+
+/* Let people know that we have them */
+#define readq			readq
+#define writeq			writeq
+
+#endif
+
 #define  IO_SPACE_LIMIT  0xffff
 
 /* do a tiny io delay */
-- 
2.11.0


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox