This adds dcri_clrset() macro which does read/modify/write
on indirect dcr registers while holding indirect dcr lock.
Signed-off-by: Valentine Barshak <[EMAIL PROTECTED]>
---
include/asm-powerpc/dcr-native.h | 17 +++++++++++++++++
1 files changed, 17 insertions(+)
--- linux-2.6.orig/include/asm-powerpc/dcr-native.h 2008-03-05
17:32:31.000000000 +0300
+++ linux-2.6/include/asm-powerpc/dcr-native.h 2008-03-05 17:53:16.000000000
+0300
@@ -82,6 +82,19 @@ static inline void __mtdcri(int base_add
spin_unlock_irqrestore(&dcr_ind_lock, flags);
}
+static inline void __dcri_clrset(int base_addr, int base_data, int reg,
+ unsigned clr, unsigned set)
+{
+ unsigned long flags;
+ unsigned int val;
+
+ spin_lock_irqsave(&dcr_ind_lock, flags);
+ __mtdcr(base_addr, reg);
+ val = (__mfdcr(base_data) & ~clr) | set;
+ __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)
@@ -90,6 +103,10 @@ static inline void __mtdcri(int base_add
DCRN_ ## base ## _CONFIG_DATA, \
reg, data)
+#define dcri_clrset(base, reg, clr, set) __dcri_clrset(DCRN_ ## base ##
_CONFIG_ADDR, \
+ DCRN_ ## base ##
_CONFIG_DATA, \
+ reg, clr, set)
+
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_DCR_NATIVE_H */
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