19 files changed, 192 insertions, 154 deletions

diff --git a/arch/arc/include/asm/fb.h b/arch/arc/include/asm/fb.h
index dc2e303cdbbb..9c2383d29cbb 100644
--- a/arch/arc/include/asm/fb.h
+++ b/arch/arc/include/asm/fb.h
@@ -1,20 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+
 #ifndef _ASM_FB_H_
 #define _ASM_FB_H_
 
-#include <linux/fb.h>
-#include <linux/fs.h>
-#include <asm/page.h>
-
-static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
-				unsigned long off)
-{
-	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-}
-
-static inline int fb_is_primary_device(struct fb_info *info)
-{
-	return 0;
-}
+#include <asm-generic/fb.h>
 
 #endif /* _ASM_FB_H_ */
diff --git a/arch/arm/include/asm/fb.h b/arch/arm/include/asm/fb.h
index d92e99cd8c8a..ce20a43c3033 100644
--- a/arch/arm/include/asm/fb.h
+++ b/arch/arm/include/asm/fb.h
@@ -1,19 +1,6 @@
 #ifndef _ASM_FB_H_
 #define _ASM_FB_H_
 
-#include <linux/fb.h>
-#include <linux/fs.h>
-#include <asm/page.h>
-
-static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
-				unsigned long off)
-{
-	vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
-}
-
-static inline int fb_is_primary_device(struct fb_info *info)
-{
-	return 0;
-}
+#include <asm-generic/fb.h>
 
 #endif /* _ASM_FB_H_ */
diff --git a/arch/arm64/include/asm/fb.h b/arch/arm64/include/asm/fb.h
index bdc735ee1f67..1a495d8fb2ce 100644
--- a/arch/arm64/include/asm/fb.h
+++ b/arch/arm64/include/asm/fb.h
@@ -5,19 +5,6 @@
 #ifndef __ASM_FB_H_
 #define __ASM_FB_H_
 
-#include <linux/fb.h>
-#include <linux/fs.h>
-#include <asm/page.h>
-
-static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
-				unsigned long off)
-{
-	vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
-}
-
-static inline int fb_is_primary_device(struct fb_info *info)
-{
-	return 0;
-}
+#include <asm-generic/fb.h>
 
 #endif /* __ASM_FB_H_ */
diff --git a/arch/ia64/include/asm/fb.h b/arch/ia64/include/asm/fb.h
index 5f95782bfa46..1717b26fd423 100644
--- a/arch/ia64/include/asm/fb.h
+++ b/arch/ia64/include/asm/fb.h
@@ -2,11 +2,14 @@
 #ifndef _ASM_FB_H_
 #define _ASM_FB_H_
 
-#include <linux/fb.h>
-#include <linux/fs.h>
+#include <linux/compiler.h>
 #include <linux/efi.h>
+#include <linux/string.h>
+
 #include <asm/page.h>
 
+struct file;
+
 static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
 				unsigned long off)
 {
@@ -15,10 +18,26 @@ static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
 	else
 		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 }
+#define fb_pgprotect fb_pgprotect
+
+static inline void fb_memcpy_fromio(void *to, const volatile void __iomem *from, size_t n)
+{
+	memcpy(to, (void __force *)from, n);
+}
+#define fb_memcpy_fromio fb_memcpy_fromio
 
-static inline int fb_is_primary_device(struct fb_info *info)
+static inline void fb_memcpy_toio(volatile void __iomem *to, const void *from, size_t n)
 {
-	return 0;
+	memcpy((void __force *)to, from, n);
 }
+#define fb_memcpy_toio fb_memcpy_toio
+
+static inline void fb_memset_io(volatile void __iomem *addr, int c, size_t n)
+{
+	memset((void __force *)addr, c, n);
+}
+#define fb_memset fb_memset_io
+
+#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 3116bde8772d..0b218b10a9ec 100644
--- a/arch/loongarch/include/asm/fb.h
+++ b/arch/loongarch/include/asm/fb.h
@@ -5,19 +5,27 @@
 #ifndef _ASM_FB_H_
 #define _ASM_FB_H_
 
-#include <linux/fb.h>
-#include <linux/fs.h>
-#include <asm/page.h>
+#include <linux/compiler.h>
+#include <linux/string.h>
 
-static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
-				unsigned long off)
+static inline void fb_memcpy_fromio(void *to, const volatile void __iomem *from, size_t n)
 {
-	vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+	memcpy(to, (void __force *)from, n);
 }
+#define fb_memcpy_fromio fb_memcpy_fromio
 
-static inline int fb_is_primary_device(struct fb_info *info)
+static inline void fb_memcpy_toio(volatile void __iomem *to, const void *from, size_t n)
 {
-	return 0;
+	memcpy((void __force *)to, from, n);
 }
+#define fb_memcpy_toio fb_memcpy_toio
+
+static inline void fb_memset_io(volatile void __iomem *addr, int c, size_t n)
+{
+	memset((void __force *)addr, c, n);
+}
+#define fb_memset fb_memset_io
+
+#include <asm-generic/fb.h>
 
 #endif /* _ASM_FB_H_ */
diff --git a/arch/m68k/include/asm/fb.h b/arch/m68k/include/asm/fb.h
index b86c6e2e26dd..24273fc7ad91 100644
--- a/arch/m68k/include/asm/fb.h
+++ b/arch/m68k/include/asm/fb.h
@@ -2,22 +2,18 @@
 #ifndef _ASM_FB_H_
 #define _ASM_FB_H_
 
-#include <linux/fb.h>
-#include <linux/fs.h>
 #include <asm/page.h>
 #include <asm/setup.h>
 
-#ifdef CONFIG_MMU
-#ifdef CONFIG_SUN3
+struct file;
+
 static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
 				unsigned long off)
 {
+#ifdef CONFIG_MMU
+#ifdef CONFIG_SUN3
 	pgprot_val(vma->vm_page_prot) |= SUN3_PAGE_NOCACHE;
-}
 #else
-static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
-				unsigned long off)
-{
 	if (CPU_IS_020_OR_030)
 		pgprot_val(vma->vm_page_prot) |= _PAGE_NOCACHE030;
 	if (CPU_IS_040_OR_060) {
@@ -25,15 +21,11 @@ static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
 		/* Use no-cache mode, serialized */
 		pgprot_val(vma->vm_page_prot) |= _PAGE_NOCACHE_S;
 	}
-}
 #endif /* CONFIG_SUN3 */
-#else
-#define fb_pgprotect(...) do {} while (0)
 #endif /* CONFIG_MMU */
-
-static inline int fb_is_primary_device(struct fb_info *info)
-{
-	return 0;
 }
+#define fb_pgprotect fb_pgprotect
+
+#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 bd3f68c9ddfc..18b7226403ba 100644
--- a/arch/mips/include/asm/fb.h
+++ b/arch/mips/include/asm/fb.h
@@ -1,19 +1,39 @@
 #ifndef _ASM_FB_H_
 #define _ASM_FB_H_
 
-#include <linux/fb.h>
-#include <linux/fs.h>
 #include <asm/page.h>
 
+struct file;
+
 static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
 				unsigned long off)
 {
 	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 }
+#define fb_pgprotect fb_pgprotect
 
-static inline int fb_is_primary_device(struct fb_info *info)
+/*
+ * 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 0;
+	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/parisc/Makefile b/arch/parisc/Makefile
index a2d8600521f9..968ebe17494c 100644
--- a/arch/parisc/Makefile
+++ b/arch/parisc/Makefile
@@ -11,7 +11,7 @@
 # Copyright (C) 1994 by Linus Torvalds
 # Portions Copyright (C) 1999 The Puffin Group
 #
-# Modified for PA-RISC Linux by Paul Lahaie, Alex deVries, 
+# Modified for PA-RISC Linux by Paul Lahaie, Alex deVries,
 # Mike Shaver, Helge Deller and Martin K. Petersen
 #
 
@@ -119,6 +119,8 @@ export LIBGCC
 
 libs-y	+= arch/parisc/lib/ $(LIBGCC)
 
+drivers-y += arch/parisc/video/
+
 boot	:= arch/parisc/boot
 
 PALO := $(shell if (which palo 2>&1); then : ; \
diff --git a/arch/parisc/include/asm/fb.h b/arch/parisc/include/asm/fb.h
index 55d29c4f716e..658a8a7dc531 100644
--- a/arch/parisc/include/asm/fb.h
+++ b/arch/parisc/include/asm/fb.h
@@ -2,23 +2,13 @@
 #ifndef _ASM_FB_H_
 #define _ASM_FB_H_
 
-#include <linux/fb.h>
-#include <linux/fs.h>
-#include <asm/page.h>
+struct fb_info;
 
-static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
-				unsigned long off)
-{
-	pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE;
-}
-
-#if defined(CONFIG_FB_STI)
+#if defined(CONFIG_STI_CORE)
 int fb_is_primary_device(struct fb_info *info);
-#else
-static inline int fb_is_primary_device(struct fb_info *info)
-{
-	return 0;
-}
+#define fb_is_primary_device fb_is_primary_device
 #endif
 
+#include <asm-generic/fb.h>
+
 #endif /* _ASM_FB_H_ */
diff --git a/arch/parisc/video/Makefile b/arch/parisc/video/Makefile
new file mode 100644
index 000000000000..16a73cce4661
--- /dev/null
+++ b/arch/parisc/video/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+obj-$(CONFIG_STI_CORE) += fbdev.o
diff --git a/arch/parisc/video/fbdev.c b/arch/parisc/video/fbdev.c
new file mode 100644
index 000000000000..137561d98246
--- /dev/null
+++ b/arch/parisc/video/fbdev.c
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org>
+ * Copyright (C) 2001-2020 Helge Deller <deller@gmx.de>
+ * Copyright (C) 2001-2002 Thomas Bogendoerfer <tsbogend@alpha.franken.de>
+ */
+
+#include <linux/fb.h>
+#include <linux/module.h>
+
+#include <video/sticore.h>
+
+int fb_is_primary_device(struct fb_info *info)
+{
+	struct sti_struct *sti;
+
+	sti = sti_get_rom(0);
+
+	/* if no built-in graphics card found, allow any fb driver as default */
+	if (!sti)
+		return true;
+
+	/* return true if it's the default built-in framebuffer driver */
+	return (sti->info == info);
+}
+EXPORT_SYMBOL(fb_is_primary_device);
diff --git a/arch/powerpc/include/asm/fb.h b/arch/powerpc/include/asm/fb.h
index 6541ab77c5b9..5f1a2e5f7654 100644
--- a/arch/powerpc/include/asm/fb.h
+++ b/arch/powerpc/include/asm/fb.h
@@ -2,8 +2,8 @@
 #ifndef _ASM_FB_H_
 #define _ASM_FB_H_
 
-#include <linux/fb.h>
 #include <linux/fs.h>
+
 #include <asm/page.h>
 
 static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
@@ -13,10 +13,8 @@ static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
 						 vma->vm_end - vma->vm_start,
 						 vma->vm_page_prot);
 }
+#define fb_pgprotect fb_pgprotect
 
-static inline int fb_is_primary_device(struct fb_info *info)
-{
-	return 0;
-}
+#include <asm-generic/fb.h>
 
 #endif /* _ASM_FB_H_ */
diff --git a/arch/sh/include/asm/fb.h b/arch/sh/include/asm/fb.h
index 9a0bca2686fd..19df13ee9ca7 100644
--- a/arch/sh/include/asm/fb.h
+++ b/arch/sh/include/asm/fb.h
@@ -2,19 +2,6 @@
 #ifndef _ASM_FB_H_
 #define _ASM_FB_H_
 
-#include <linux/fb.h>
-#include <linux/fs.h>
-#include <asm/page.h>
-
-static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
-				unsigned long off)
-{
-	vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
-}
-
-static inline int fb_is_primary_device(struct fb_info *info)
-{
-	return 0;
-}
+#include <asm-generic/fb.h>
 
 #endif /* _ASM_FB_H_ */
diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile
index 74be90529a18..7417345c6639 100644
--- a/arch/sparc/Makefile
+++ b/arch/sparc/Makefile
@@ -60,6 +60,7 @@ libs-y                 += arch/sparc/prom/
 libs-y                 += arch/sparc/lib/
 
 drivers-$(CONFIG_PM) += arch/sparc/power/
+drivers-$(CONFIG_FB) += arch/sparc/video/
 
 boot := arch/sparc/boot
 
diff --git a/arch/sparc/include/asm/fb.h b/arch/sparc/include/asm/fb.h
index f699962e9ddf..572ecd3e1cc4 100644
--- a/arch/sparc/include/asm/fb.h
+++ b/arch/sparc/include/asm/fb.h
@@ -1,34 +1,41 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _SPARC_FB_H_
 #define _SPARC_FB_H_
-#include <linux/console.h>
-#include <linux/fb.h>
-#include <linux/fs.h>
-#include <asm/page.h>
-#include <asm/prom.h>
 
+#include <linux/io.h>
+
+struct fb_info;
+struct file;
+struct vm_area_struct;
+
+#ifdef CONFIG_SPARC32
 static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
 				unsigned long off)
-{
-#ifdef CONFIG_SPARC64
-	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+{ }
+#define fb_pgprotect fb_pgprotect
 #endif
-}
 
-static inline int fb_is_primary_device(struct fb_info *info)
-{
-	struct device *dev = info->device;
-	struct device_node *node;
+int fb_is_primary_device(struct fb_info *info);
+#define fb_is_primary_device fb_is_primary_device
 
-	if (console_set_on_cmdline)
-		return 0;
+static inline void fb_memcpy_fromio(void *to, const volatile void __iomem *from, size_t n)
+{
+	sbus_memcpy_fromio(to, from, n);
+}
+#define fb_memcpy_fromio fb_memcpy_fromio
 
-	node = dev->of_node;
-	if (node &&
-	    node == of_console_device)
-		return 1;
+static inline void fb_memcpy_toio(volatile void __iomem *to, const void *from, size_t n)
+{
+	sbus_memcpy_toio(to, from, n);
+}
+#define fb_memcpy_toio fb_memcpy_toio
 
-	return 0;
+static inline void fb_memset_io(volatile void __iomem *addr, int c, size_t n)
+{
+	sbus_memset_io(addr, c, n);
 }
+#define fb_memset fb_memset_io
+
+#include <asm-generic/fb.h>
 
 #endif /* _SPARC_FB_H_ */
diff --git a/arch/sparc/video/Makefile b/arch/sparc/video/Makefile
new file mode 100644
index 000000000000..6baddbd58e4d
--- /dev/null
+++ b/arch/sparc/video/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+obj-$(CONFIG_FB) += fbdev.o
diff --git a/arch/sparc/video/fbdev.c b/arch/sparc/video/fbdev.c
new file mode 100644
index 000000000000..25837f128132
--- /dev/null
+++ b/arch/sparc/video/fbdev.c
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/console.h>
+#include <linux/fb.h>
+#include <linux/module.h>
+
+#include <asm/prom.h>
+
+int fb_is_primary_device(struct fb_info *info)
+{
+	struct device *dev = info->device;
+	struct device_node *node;
+
+	if (console_set_on_cmdline)
+		return 0;
+
+	node = dev->of_node;
+	if (node && node == of_console_device)
+		return 1;
+
+	return 0;
+}
+EXPORT_SYMBOL(fb_is_primary_device);
diff --git a/arch/x86/include/asm/fb.h b/arch/x86/include/asm/fb.h
index ab4c960146e3..23873da8fb77 100644
--- a/arch/x86/include/asm/fb.h
+++ b/arch/x86/include/asm/fb.h
@@ -2,21 +2,16 @@
 #ifndef _ASM_X86_FB_H
 #define _ASM_X86_FB_H
 
-#include <linux/fb.h>
-#include <linux/fs.h>
-#include <asm/page.h>
+struct fb_info;
+struct file;
+struct vm_area_struct;
 
-static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
-				unsigned long off)
-{
-	unsigned long prot;
+void fb_pgprotect(struct file *file, struct vm_area_struct *vma, unsigned long off);
+#define fb_pgprotect fb_pgprotect
 
-	prot = pgprot_val(vma->vm_page_prot) & ~_PAGE_CACHE_MASK;
-	if (boot_cpu_data.x86 > 3)
-		pgprot_val(vma->vm_page_prot) =
-			prot | cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS);
-}
+int fb_is_primary_device(struct fb_info *info);
+#define fb_is_primary_device fb_is_primary_device
 
-extern int fb_is_primary_device(struct fb_info *info);
+#include <asm-generic/fb.h>
 
 #endif /* _ASM_X86_FB_H */
diff --git a/arch/x86/video/fbdev.c b/arch/x86/video/fbdev.c
index 9fd24846d094..f41a17ebac48 100644
--- a/arch/x86/video/fbdev.c
+++ b/arch/x86/video/fbdev.c
@@ -6,35 +6,37 @@
  * for more details.
  *
  */
+
 #include <linux/fb.h>
-#include <linux/pci.h>
 #include <linux/module.h>
+#include <linux/pci.h>
 #include <linux/vgaarb.h>
 
+void fb_pgprotect(struct file *file, struct vm_area_struct *vma, unsigned long off)
+{
+	unsigned long prot;
+
+	prot = pgprot_val(vma->vm_page_prot) & ~_PAGE_CACHE_MASK;
+	if (boot_cpu_data.x86 > 3)
+		pgprot_val(vma->vm_page_prot) =
+			prot | cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS);
+}
+EXPORT_SYMBOL(fb_pgprotect);
+
 int fb_is_primary_device(struct fb_info *info)
 {
 	struct device *device = info->device;
-	struct pci_dev *default_device = vga_default_device();
 	struct pci_dev *pci_dev;
-	struct resource *res;
 
 	if (!device || !dev_is_pci(device))
 		return 0;
 
 	pci_dev = to_pci_dev(device);
 
-	if (default_device) {
-		if (pci_dev == default_device)
-			return 1;
-		return 0;
-	}
-
-	res = pci_dev->resource + PCI_ROM_RESOURCE;
-
-	if (res->flags & IORESOURCE_ROM_SHADOW)
+	if (pci_dev == vga_default_device())
 		return 1;
-
 	return 0;
 }
 EXPORT_SYMBOL(fb_is_primary_device);
+
 MODULE_LICENSE("GPL");