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authorThomas Zimmermann <tzimmermann@suse.de>2023-09-22 11:04:56 +0300
committerThomas Zimmermann <tzimmermann@suse.de>2023-10-12 10:20:46 +0300
commit052ddf7b86d2d9443bce77ef5b5b1ef61a3b79fc (patch)
treecba604afadc8aca42d2f5ce253c7dff4168e0da0 /arch
parentc205a67d28766ffaae3d02cdffc9c86d52ed6c2e (diff)
downloadlinux-052ddf7b86d2d9443bce77ef5b5b1ef61a3b79fc.tar.xz
fbdev: Replace fb_pgprotect() with pgprot_framebuffer()
Rename the fbdev mmap helper fb_pgprotect() to pgprot_framebuffer(). The helper sets VMA page-access flags for framebuffers in device I/O memory. Also clean up the helper's parameters and return value. Instead of the VMA instance, pass the individial parameters separately: existing page-access flags, the VMAs start and end addresses and the offset in the underlying device memory rsp file. Return the new page-access flags. These changes align pgprot_framebuffer() with other pgprot_() functions. v4: * fix commit message (Christophe) v3: * rename fb_pgprotect() to pgprot_framebuffer() (Arnd) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230922080636.26762-3-tzimmermann@suse.de
Diffstat (limited to 'arch')
-rw-r--r--arch/ia64/include/asm/fb.h15
-rw-r--r--arch/m68k/include/asm/fb.h19
-rw-r--r--arch/mips/include/asm/fb.h11
-rw-r--r--arch/powerpc/include/asm/fb.h13
-rw-r--r--arch/sparc/include/asm/fb.h15
-rw-r--r--arch/x86/include/asm/fb.h10
-rw-r--r--arch/x86/video/fbdev.c15
7 files changed, 50 insertions, 48 deletions
diff --git a/arch/ia64/include/asm/fb.h b/arch/ia64/include/asm/fb.h
index 1717b26fd423..7fce0d542359 100644
--- a/arch/ia64/include/asm/fb.h
+++ b/arch/ia64/include/asm/fb.h
@@ -8,17 +8,16 @@
#include <asm/page.h>
-struct file;
-
-static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
- unsigned long off)
+static inline pgprot_t pgprot_framebuffer(pgprot_t prot,
+ unsigned long vm_start, unsigned long vm_end,
+ unsigned long offset)
{
- if (efi_range_is_wc(vma->vm_start, vma->vm_end - vma->vm_start))
- vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+ if (efi_range_is_wc(vm_start, vm_end - vm_start))
+ return pgprot_writecombine(prot);
else
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ return pgprot_noncached(prot);
}
-#define fb_pgprotect fb_pgprotect
+#define pgprot_framebuffer pgprot_framebuffer
static inline void fb_memcpy_fromio(void *to, const volatile void __iomem *from, size_t n)
{
diff --git a/arch/m68k/include/asm/fb.h b/arch/m68k/include/asm/fb.h
index 24273fc7ad91..9941b7434b69 100644
--- a/arch/m68k/include/asm/fb.h
+++ b/arch/m68k/include/asm/fb.h
@@ -5,26 +5,27 @@
#include <asm/page.h>
#include <asm/setup.h>
-struct file;
-
-static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
- unsigned long off)
+static inline pgprot_t pgprot_framebuffer(pgprot_t prot,
+ unsigned long vm_start, unsigned long vm_end,
+ unsigned long offset)
{
#ifdef CONFIG_MMU
#ifdef CONFIG_SUN3
- pgprot_val(vma->vm_page_prot) |= SUN3_PAGE_NOCACHE;
+ pgprot_val(prot) |= SUN3_PAGE_NOCACHE;
#else
if (CPU_IS_020_OR_030)
- pgprot_val(vma->vm_page_prot) |= _PAGE_NOCACHE030;
+ pgprot_val(prot) |= _PAGE_NOCACHE030;
if (CPU_IS_040_OR_060) {
- pgprot_val(vma->vm_page_prot) &= _CACHEMASK040;
+ pgprot_val(prot) &= _CACHEMASK040;
/* Use no-cache mode, serialized */
- pgprot_val(vma->vm_page_prot) |= _PAGE_NOCACHE_S;
+ pgprot_val(prot) |= _PAGE_NOCACHE_S;
}
#endif /* CONFIG_SUN3 */
#endif /* CONFIG_MMU */
+
+ return prot;
}
-#define fb_pgprotect fb_pgprotect
+#define pgprot_framebuffer pgprot_framebuffer
#include <asm-generic/fb.h>
diff --git a/arch/mips/include/asm/fb.h b/arch/mips/include/asm/fb.h
index 18b7226403ba..d98d6681d64e 100644
--- a/arch/mips/include/asm/fb.h
+++ b/arch/mips/include/asm/fb.h
@@ -3,14 +3,13 @@
#include <asm/page.h>
-struct file;
-
-static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
- unsigned long off)
+static inline pgprot_t pgprot_framebuffer(pgprot_t prot,
+ unsigned long vm_start, unsigned long vm_end,
+ unsigned long offset)
{
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ return pgprot_noncached(prot);
}
-#define fb_pgprotect fb_pgprotect
+#define pgprot_framebuffer pgprot_framebuffer
/*
* MIPS doesn't define __raw_ I/O macros, so the helpers
diff --git a/arch/powerpc/include/asm/fb.h b/arch/powerpc/include/asm/fb.h
index 61e3b8806db6..3cecf14d51de 100644
--- a/arch/powerpc/include/asm/fb.h
+++ b/arch/powerpc/include/asm/fb.h
@@ -2,23 +2,20 @@
#ifndef _ASM_FB_H_
#define _ASM_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)
+static inline pgprot_t pgprot_framebuffer(pgprot_t prot,
+ unsigned long vm_start, unsigned long vm_end,
+ unsigned long offset)
{
/*
* PowerPC's implementation of phys_mem_access_prot() does
* not use the file argument. Set it to NULL in preparation
* of later updates to the interface.
*/
- vma->vm_page_prot = phys_mem_access_prot(NULL, PHYS_PFN(off),
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot);
+ return phys_mem_access_prot(NULL, PHYS_PFN(offset), vm_end - vm_start, prot);
}
-#define fb_pgprotect fb_pgprotect
+#define pgprot_framebuffer pgprot_framebuffer
#include <asm-generic/fb.h>
diff --git a/arch/sparc/include/asm/fb.h b/arch/sparc/include/asm/fb.h
index 572ecd3e1cc4..24440c0fda49 100644
--- a/arch/sparc/include/asm/fb.h
+++ b/arch/sparc/include/asm/fb.h
@@ -4,15 +4,18 @@
#include <linux/io.h>
+#include <asm/page.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)
-{ }
-#define fb_pgprotect fb_pgprotect
+static inline pgprot_t pgprot_framebuffer(pgprot_t prot,
+ unsigned long vm_start, unsigned long vm_end,
+ unsigned long offset)
+{
+ return prot;
+}
+#define pgprot_framebuffer pgprot_framebuffer
#endif
int fb_is_primary_device(struct fb_info *info);
diff --git a/arch/x86/include/asm/fb.h b/arch/x86/include/asm/fb.h
index 23873da8fb77..c3b9582de7ef 100644
--- a/arch/x86/include/asm/fb.h
+++ b/arch/x86/include/asm/fb.h
@@ -2,12 +2,14 @@
#ifndef _ASM_X86_FB_H
#define _ASM_X86_FB_H
+#include <asm/page.h>
+
struct fb_info;
-struct file;
-struct vm_area_struct;
-void fb_pgprotect(struct file *file, struct vm_area_struct *vma, unsigned long off);
-#define fb_pgprotect fb_pgprotect
+pgprot_t pgprot_framebuffer(pgprot_t prot,
+ unsigned long vm_start, unsigned long vm_end,
+ unsigned long offset);
+#define pgprot_framebuffer pgprot_framebuffer
int fb_is_primary_device(struct fb_info *info);
#define fb_is_primary_device fb_is_primary_device
diff --git a/arch/x86/video/fbdev.c b/arch/x86/video/fbdev.c
index 49a0452402e9..1dd6528cc947 100644
--- a/arch/x86/video/fbdev.c
+++ b/arch/x86/video/fbdev.c
@@ -13,16 +13,17 @@
#include <linux/vgaarb.h>
#include <asm/fb.h>
-void fb_pgprotect(struct file *file, struct vm_area_struct *vma, unsigned long off)
+pgprot_t pgprot_framebuffer(pgprot_t prot,
+ unsigned long vm_start, unsigned long vm_end,
+ unsigned long offset)
{
- unsigned long prot;
-
- prot = pgprot_val(vma->vm_page_prot) & ~_PAGE_CACHE_MASK;
+ pgprot_val(prot) &= ~_PAGE_CACHE_MASK;
if (boot_cpu_data.x86 > 3)
- pgprot_val(vma->vm_page_prot) =
- prot | cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS);
+ pgprot_val(prot) |= cachemode2protval(_PAGE_CACHE_MODE_UC_MINUS);
+
+ return prot;
}
-EXPORT_SYMBOL(fb_pgprotect);
+EXPORT_SYMBOL(pgprot_framebuffer);
int fb_is_primary_device(struct fb_info *info)
{