Merge git://git.infradead.org/mtd-2.6

[linux-2.6] / include / asm-powerpc / dcr-native.h

diff --git a/include/asm-powerpc/dcr-native.h b/include/asm-powerpc/dcr-native.h
index 8dbb1ab0aa04d2fce6a0e4c858ee0357875e2cc1..be6c879e8760b11ba3b92de41e39f72622b6fb4f 100644 (file)
--- a/include/asm-powerpc/dcr-native.h
+++ b/include/asm-powerpc/dcr-native.h
@@ -22,6 +22,8 @@
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__
 
+#include <linux/spinlock.h>
+
 typedef struct {
        unsigned int base;
 } dcr_host_t;
@@ -55,20 +57,39 @@ do {                                                                \
 } 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);                        \
-})
+extern spinlock_t dcr_ind_lock;
 
-#define mtdcri(base, reg, data)                        \
-do {                                           \
-       mtdcr(base ## _CFGADDR, base ## _ ## reg);      \
-       mtdcr(base ## _CFGDATA, data);          \
-} while (0)
+static inline unsigned __mfdcri(int base_addr, int base_data, int reg)
+{
+       unsigned long flags;
+       unsigned int val;
+
+       spin_lock_irqsave(&dcr_ind_lock, flags);
+       __mtdcr(base_addr, reg);
+       val = __mfdcr(base_data);
+       spin_unlock_irqrestore(&dcr_ind_lock, flags);
+       return val;
+}
+
+static inline void __mtdcri(int base_addr, int base_data, int reg,
+                           unsigned val)
+{
+       unsigned long flags;
+
+       spin_lock_irqsave(&dcr_ind_lock, flags);
+       __mtdcr(base_addr, reg);
+       __mtdcr(base_data, val);
+       spin_unlock_irqrestore(&dcr_ind_lock, flags);
+}
+
+#define mfdcri(base, reg)      __mfdcri(DCRN_ ## base ## _CONFIG_ADDR, \
+                                        DCRN_ ## base ## _CONFIG_DATA, \
+                                        reg)
+
+#define mtdcri(base, reg, data)        __mtdcri(DCRN_ ## base ## _CONFIG_ADDR, \
+                                        DCRN_ ## base ## _CONFIG_DATA, \
+                                        reg, data)
 
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_DCR_NATIVE_H */
-
-