4 files changed, 83 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/fb.h b/arch/ia64/include/asm/fb.h
index 0208f64a0da0..bcf982043a5c 100644
--- a/arch/ia64/include/asm/fb.h
+++ b/arch/ia64/include/asm/fb.h
@@ -2,7 +2,9 @@
 #ifndef _ASM_FB_H_
 #define _ASM_FB_H_
 
+#include <linux/compiler.h>
 #include <linux/efi.h>
+#include <linux/string.h>
 
 #include <asm/page.h>
 
@@ -18,6 +20,24 @@ static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
 }
 #define fb_pgprotect fb_pgprotect
 
+static inline void fb_memcpy_fromfb(void *to, const volatile void __iomem *from, size_t n)
+{
+	memcpy(to, (void __force *)from, n);
+}
+#define fb_memcpy_fromfb fb_memcpy_fromfb
+
+static inline void fb_memcpy_tofb(volatile void __iomem *to, const void *from, size_t n)
+{
+	memcpy((void __force *)to, from, n);
+}
+#define fb_memcpy_tofb fb_memcpy_tofb
+
+static inline void fb_memset(volatile void __iomem *addr, int c, size_t n)
+{
+	memset((void __force *)addr, c, n);
+}
+#define fb_memset fb_memset
+
 #include <asm-generic/fb.h>
 
 #endif /* _ASM_FB_H_ */
diff --git a/arch/loongarch/include/asm/fb.h b/arch/loongarch/include/asm/fb.h
index ff82f20685c8..c6fc7ef374a4 100644
--- a/arch/loongarch/include/asm/fb.h
+++ b/arch/loongarch/include/asm/fb.h
@@ -5,6 +5,27 @@
 #ifndef _ASM_FB_H_
 #define _ASM_FB_H_
 
+#include <linux/compiler.h>
+#include <linux/string.h>
+
+static inline void fb_memcpy_fromfb(void *to, const volatile void __iomem *from, size_t n)
+{
+	memcpy(to, (void __force *)from, n);
+}
+#define fb_memcpy_fromfb fb_memcpy_fromfb
+
+static inline void fb_memcpy_tofb(volatile void __iomem *to, const void *from, size_t n)
+{
+	memcpy((void __force *)to, from, n);
+}
+#define fb_memcpy_tofb fb_memcpy_tofb
+
+static inline void fb_memset(volatile void __iomem *addr, int c, size_t n)
+{
+	memset((void __force *)addr, c, n);
+}
+#define fb_memset fb_memset
+
 #include <asm-generic/fb.h>
 
 #endif /* _ASM_FB_H_ */
diff --git a/arch/mips/include/asm/fb.h b/arch/mips/include/asm/fb.h
index 6bda0a81d8ca..18b7226403ba 100644
--- a/arch/mips/include/asm/fb.h
+++ b/arch/mips/include/asm/fb.h
@@ -12,6 +12,28 @@ static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
 }
 #define fb_pgprotect fb_pgprotect
 
+/*
+ * MIPS doesn't define __raw_ I/O macros, so the helpers
+ * in <asm-generic/fb.h> don't generate fb_readq() and
+ * fb_write(). We have to provide them here.
+ *
+ * TODO: Convert MIPS to generic I/O. The helpers below can
+ *       then be removed.
+ */
+#ifdef CONFIG_64BIT
+static inline u64 fb_readq(const volatile void __iomem *addr)
+{
+	return __raw_readq(addr);
+}
+#define fb_readq fb_readq
+
+static inline void fb_writeq(u64 b, volatile void __iomem *addr)
+{
+	__raw_writeq(b, addr);
+}
+#define fb_writeq fb_writeq
+#endif
+
 #include <asm-generic/fb.h>
 
 #endif /* _ASM_FB_H_ */
diff --git a/arch/sparc/include/asm/fb.h b/arch/sparc/include/asm/fb.h
index 689ee5c60054..077da91aeba1 100644
--- a/arch/sparc/include/asm/fb.h
+++ b/arch/sparc/include/asm/fb.h
@@ -2,6 +2,8 @@
 #ifndef _SPARC_FB_H_
 #define _SPARC_FB_H_
 
+#include <linux/io.h>
+
 struct fb_info;
 struct file;
 struct vm_area_struct;
@@ -16,6 +18,24 @@ static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
 int fb_is_primary_device(struct fb_info *info);
 #define fb_is_primary_device fb_is_primary_device
 
+static inline void fb_memcpy_fromfb(void *to, const volatile void __iomem *from, size_t n)
+{
+	sbus_memcpy_fromio(to, from, n);
+}
+#define fb_memcpy_fromfb fb_memcpy_fromfb
+
+static inline void fb_memcpy_tofb(volatile void __iomem *to, const void *from, size_t n)
+{
+	sbus_memcpy_toio(to, from, n);
+}
+#define fb_memcpy_tofb fb_memcpy_tofb
+
+static inline void fb_memset(volatile void __iomem *addr, int c, size_t n)
+{
+	sbus_memset_io(addr, c, n);
+}
+#define fb_memset fb_memset
+
 #include <asm-generic/fb.h>
 
 #endif /* _SPARC_FB_H_ */