8 files changed, 134 insertions, 16 deletions

diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h
index e994197f84b7..e37963c1df4d 100644
--- a/include/asm-generic/atomic.h
+++ b/include/asm-generic/atomic.h
@@ -1,5 +1,7 @@
 /*
- * Generic C implementation of atomic counter operations
+ * Generic C implementation of atomic counter operations. Usable on
+ * UP systems only. Do not include in machine independent code.
+ *
  * Originally implemented for MN10300.
  *
  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
@@ -14,7 +16,11 @@
 #define __ASM_GENERIC_ATOMIC_H
 
 #ifdef CONFIG_SMP
-#error not SMP safe
+/* Force people to define core atomics */
+# if !defined(atomic_add_return) || !defined(atomic_sub_return) || \
+     !defined(atomic_clear_mask) || !defined(atomic_set_mask)
+#  error "SMP requires a little arch-specific magic"
+# endif
 #endif
 
 /*
@@ -32,7 +38,9 @@
  *
  * Atomically reads the value of @v.
  */
+#ifndef atomic_read
 #define atomic_read(v)  (*(volatile int *)&(v)->counter)
+#endif
 
 /**
  * atomic_set - set atomic variable
@@ -53,6 +61,7 @@
  *
  * Atomically adds @i to @v and returns the result
  */
+#ifndef atomic_add_return
 static inline int atomic_add_return(int i, atomic_t *v)
 {
         unsigned long flags;
@@ -66,6 +75,7 @@ static inline int atomic_add_return(int i, atomic_t *v)
 
         return temp;
 }
+#endif
 
 /**
  * atomic_sub_return - subtract integer from atomic variable
@@ -74,6 +84,7 @@ static inline int atomic_add_return(int i, atomic_t *v)
  *
  * Atomically subtracts @i from @v and returns the result
  */
+#ifndef atomic_sub_return
 static inline int atomic_sub_return(int i, atomic_t *v)
 {
         unsigned long flags;
@@ -87,6 +98,7 @@ static inline int atomic_sub_return(int i, atomic_t *v)
 
         return temp;
 }
+#endif
 
 static inline int atomic_add_negative(int i, atomic_t *v)
 {
@@ -117,8 +129,8 @@ static inline void atomic_dec(atomic_t *v)
 #define atomic_inc_return(v)            atomic_add_return(1, (v))
 
 #define atomic_sub_and_test(i, v)       (atomic_sub_return((i), (v)) == 0)
-#define atomic_dec_and_test(v)          (atomic_sub_return(1, (v)) == 0)
-#define atomic_inc_and_test(v)          (atomic_add_return(1, (v)) == 0)
+#define atomic_dec_and_test(v)          (atomic_dec_return(v) == 0)
+#define atomic_inc_and_test(v)          (atomic_inc_return(v) == 0)
 
 #define atomic_xchg(ptr, v)             (xchg(&(ptr)->counter, (v)))
 #define atomic_cmpxchg(v, old, new)     (cmpxchg(&((v)->counter), (old), (new)))
@@ -129,26 +141,51 @@ static inline void atomic_dec(atomic_t *v)
 
 #define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
 
-static inline int atomic_add_unless(atomic_t *v, int a, int u)
+static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 {
   int c, old;
   c = atomic_read(v);
   while (c != u && (old = atomic_cmpxchg(v, c, c + a)) != c)
     c = old;
-  return c != u;
+  return c;
 }
 
-#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
-
-static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
+/**
+ * atomic_clear_mask - Atomically clear bits in atomic variable
+ * @mask: Mask of the bits to be cleared
+ * @v: pointer of type atomic_t
+ *
+ * Atomically clears the bits set in @mask from @v
+ */
+#ifndef atomic_clear_mask
+static inline void atomic_clear_mask(unsigned long mask, atomic_t *v)
 {
         unsigned long flags;
 
         mask = ~mask;
         raw_local_irq_save(flags); /* Don't trace it in a irqsoff handler */
-        *addr &= mask;
+        v->counter &= mask;
         raw_local_irq_restore(flags);
 }
+#endif
+
+/**
+ * atomic_set_mask - Atomically set bits in atomic variable
+ * @mask: Mask of the bits to be set
+ * @v: pointer of type atomic_t
+ *
+ * Atomically sets the bits set in @mask in @v
+ */
+#ifndef atomic_set_mask
+static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
+{
+        unsigned long flags;
+
+        raw_local_irq_save(flags); /* Don't trace it in a irqsoff handler */
+        v->counter |= mask;
+        raw_local_irq_restore(flags);
+}
+#endif
 
 /* Assume that atomic operations are already serializing */
 #define smp_mb__before_atomic_dec()     barrier()
@@ -156,7 +193,5 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
 #define smp_mb__before_atomic_inc()     barrier()
 #define smp_mb__after_atomic_inc()      barrier()
 
-#include <asm-generic/atomic-long.h>
-
 #endif /* __KERNEL__ */
 #endif /* __ASM_GENERIC_ATOMIC_H */
diff --git a/include/asm-generic/bitops/ext2-atomic-setbit.h b/include/asm-generic/bitops/ext2-atomic-setbit.h
new file mode 100644
index 000000000000..5a0997857b34
--- /dev/null
+++ b/include/asm-generic/bitops/ext2-atomic-setbit.h
@@ -0,0 +1,11 @@
+#ifndef _ASM_GENERIC_BITOPS_EXT2_ATOMIC_SETBIT_H_
+#define _ASM_GENERIC_BITOPS_EXT2_ATOMIC_SETBIT_H_
+
+/*
+ * Atomic bitops based version of ext2 atomic bitops
+ */
+
+#define ext2_set_bit_atomic(l, nr, addr)        test_and_set_bit_le(nr, addr)
+#define ext2_clear_bit_atomic(l, nr, addr)      test_and_clear_bit_le(nr, addr)
+
+#endif /* _ASM_GENERIC_BITOPS_EXT2_ATOMIC_SETBIT_H_ */
diff --git a/include/asm-generic/bitops/ext2-atomic.h b/include/asm-generic/bitops/ext2-atomic.h
index ecf1c9d8a7cc..87f0f109d7f1 100644
--- a/include/asm-generic/bitops/ext2-atomic.h
+++ b/include/asm-generic/bitops/ext2-atomic.h
@@ -1,6 +1,10 @@
 #ifndef _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_
 #define _ASM_GENERIC_BITOPS_EXT2_ATOMIC_H_
 
+/*
+ * Spinlock based version of ext2 atomic bitops
+ */
+
 #define ext2_set_bit_atomic(lock, nr, addr)             \
         ({                                              \
                 int ret;                                \
diff --git a/include/asm-generic/iomap.h b/include/asm-generic/iomap.h
index c74ef2c6e633..98dcd76ce836 100644
--- a/include/asm-generic/iomap.h
+++ b/include/asm-generic/iomap.h
@@ -71,6 +71,14 @@ extern void ioport_unmap(void __iomem *);
 struct pci_dev;
 extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
 extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
+#else
+struct pci_dev;
+static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
+{
+        return NULL;
+}
+static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
+{ }
 #endif
 
 #endif
diff --git a/include/asm-generic/local.h b/include/asm-generic/local.h
index c8a5d68541d7..9ceb03b4f466 100644
--- a/include/asm-generic/local.h
+++ b/include/asm-generic/local.h
@@ -2,7 +2,7 @@
 #define _ASM_GENERIC_LOCAL_H
 
 #include <linux/percpu.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 #include <asm/types.h>
 
 /*
diff --git a/include/asm-generic/local64.h b/include/asm-generic/local64.h
index 02ac760c1a8b..5980002b8b7b 100644
--- a/include/asm-generic/local64.h
+++ b/include/asm-generic/local64.h
@@ -55,7 +55,7 @@ typedef struct {
 
 #else /* BITS_PER_LONG != 64 */
 
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 
 /* Don't use typedef: don't want them to be mixed with atomic_t's. */
 typedef struct {
diff --git a/include/asm-generic/pci-bridge.h b/include/asm-generic/pci-bridge.h
new file mode 100644
index 000000000000..4a5aca2a2c94
--- /dev/null
+++ b/include/asm-generic/pci-bridge.h
@@ -0,0 +1,62 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#ifndef _ASM_GENERIC_PCI_BRIDGE_H
+#define _ASM_GENERIC_PCI_BRIDGE_H
+
+#ifdef __KERNEL__
+
+enum {
+        /* Force re-assigning all resources (ignore firmware
+         * setup completely)
+         */
+        PCI_REASSIGN_ALL_RSRC   = 0x00000001,
+
+        /* Re-assign all bus numbers */
+        PCI_REASSIGN_ALL_BUS    = 0x00000002,
+
+        /* Do not try to assign, just use existing setup */
+        PCI_PROBE_ONLY          = 0x00000004,
+
+        /* Don't bother with ISA alignment unless the bridge has
+         * ISA forwarding enabled
+         */
+        PCI_CAN_SKIP_ISA_ALIGN  = 0x00000008,
+
+        /* Enable domain numbers in /proc */
+        PCI_ENABLE_PROC_DOMAINS = 0x00000010,
+        /* ... except for domain 0 */
+        PCI_COMPAT_DOMAIN_0     = 0x00000020,
+};
+
+#ifdef CONFIG_PCI
+extern unsigned int pci_flags;
+
+static inline void pci_set_flags(int flags)
+{
+        pci_flags = flags;
+}
+
+static inline void pci_add_flags(int flags)
+{
+        pci_flags |= flags;
+}
+
+static inline int pci_has_flag(int flag)
+{
+        return pci_flags & flag;
+}
+#else
+static inline void pci_set_flags(int flags) { }
+static inline void pci_add_flags(int flags) { }
+static inline int pci_has_flag(int flag)
+{
+        return 0;
+}
+#endif  /* CONFIG_PCI */
+
+#endif  /* __KERNEL__ */
+#endif  /* _ASM_GENERIC_PCI_BRIDGE_H */
diff --git a/include/asm-generic/system.h b/include/asm-generic/system.h
index 4b0b9cbbfae5..215efa74f5a2 100644
--- a/include/asm-generic/system.h
+++ b/include/asm-generic/system.h
@@ -14,7 +14,6 @@
 #ifndef __ASM_GENERIC_SYSTEM_H
 #define __ASM_GENERIC_SYSTEM_H
 
-#ifdef __KERNEL__
 #ifndef __ASSEMBLY__
 
 #include <linux/types.h>
@@ -139,5 +138,4 @@ unsigned long __xchg(unsigned long x, volatile void *ptr, int size)
 
 #endif /* !__ASSEMBLY__ */
 
-#endif /* __KERNEL__ */
 #endif /* __ASM_GENERIC_SYSTEM_H */