X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=include%2Fasm-powerpc%2Fdcr-native.h;h=05af081222f6ba7c0a1ac8f8cf90b4def3cbb487;hb=eb0cb8a07e320ed3237789cc4f29858338d14d8e;hp=fd4a5f5e33d16588ef4c92e7bdbde279901d5e5b;hpb=ea14fad0d416354a4e9bb1a04f32acba706f9548;p=powerpc.git

diff --git a/include/asm-powerpc/dcr-native.h b/include/asm-powerpc/dcr-native.h
index fd4a5f5e33..05af081222 100644
--- a/include/asm-powerpc/dcr-native.h
+++ b/include/asm-powerpc/dcr-native.h
@@ -20,19 +20,52 @@
 #ifndef _ASM_POWERPC_DCR_NATIVE_H
 #define _ASM_POWERPC_DCR_NATIVE_H
 #ifdef __KERNEL__
-
-#include <asm/reg.h>
+#ifndef __ASSEMBLY__
 
 typedef struct {} dcr_host_t;
 
 #define DCR_MAP_OK(host)	(1)
 
-#define dcr_map(dev, dcr_n, dcr_c)	{}
-#define dcr_unmap(host, dcr_n, dcr_c)	{}
+#define dcr_map(dev, dcr_n, dcr_c)	((dcr_host_t){})
+#define dcr_unmap(host, dcr_n, dcr_c)	do {} while (0)
 #define dcr_read(host, dcr_n)		mfdcr(dcr_n)
 #define dcr_write(host, dcr_n, value)	mtdcr(dcr_n, value)
 
+/* Device Control Registers */
+void __mtdcr(int reg, unsigned int val);
+unsigned int __mfdcr(int reg);
+#define mfdcr(rn)						\
+	({unsigned int rval;					\
+	if (__builtin_constant_p(rn))				\
+		asm volatile("mfdcr %0," __stringify(rn)	\
+		              : "=r" (rval));			\
+	else							\
+		rval = __mfdcr(rn);				\
+	rval;})
+
+#define mtdcr(rn, v)						\
+do {								\
+	if (__builtin_constant_p(rn))				\
+		asm volatile("mtdcr " __stringify(rn) ",%0"	\
+			      : : "r" (v)); 			\
+	else							\
+		__mtdcr(rn, v);					\
+} while (0)
+
+/* R/W of indirect DCRs make use of standard naming conventions for DCRs */
+#define mfdcri(base, reg)			\
+({						\
+	mtdcr(base ## _CFGADDR, base ## _ ## reg);	\
+	mfdcr(base ## _CFGDATA);			\
+})
+
+#define mtdcri(base, reg, data)			\
+do {						\
+	mtdcr(base ## _CFGADDR, base ## _ ## reg);	\
+	mtdcr(base ## _CFGDATA, data);		\
+} while (0)
 
+#endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_DCR_NATIVE_H */