Hi, On Mon, May 15, 2023 at 05:08:32PM +0800, Baoquan He wrote: > Let's use '#define ioremap_xx' and "#ifdef ioremap_xx" instead. > > For each architecture to remove defined ARCH_HAS_IOREMAP_xx macros in This sentence seems to be stale. > To remove defined ARCH_HAS_IOREMAP_xx macros in <asm/io.h> of each ARCH, > the ARCH's own ioremap_wc|wt|np definition need be above > "#include <asm-generic/iomap.h>. Otherwise the redefinition error would > be seen during compiling. So the relevant adjustments are made to avoid > compiling error: > > loongarch: > - doesn't include <asm-generic/iomap.h>, defining ARCH_HAS_IOREMAP_WC > is redundant, so simply remove it. > > m68k: > - selected GENERIC_IOMAP, <asm-generic/iomap.h> has been added in > <asm-generic/io.h>, and <asm/kmap.h> is included above > <asm-generic/iomap.h>, so simply remove ARCH_HAS_IOREMAP_WT defining. > > mips: > - move "#include <asm-generic/iomap.h>" below ioremap_wc definition > in <asm/io.h> > > powerpc: > - remove "#include <asm-generic/iomap.h>" in <asm/io.h> because it's > duplicated with the one in <asm-generic/io.h>, let's rely on the > latter. > > x86: > - selected GENERIC_IOMAP, remove #include <asm-generic/iomap.h> in > the middle of <asm/io.h>. Let's rely on <asm-generic/io.h>. > > Signed-off-by: Baoquan He <bhe@xxxxxxxxxx> > Cc: loongarch@xxxxxxxxxxxxxxx > Cc: linux-m68k@xxxxxxxxxxxxxxxxxxxx > Cc: linux-mips@xxxxxxxxxxxxxxx > Cc: linuxppc-dev@xxxxxxxxxxxxxxxx > Cc: x86@xxxxxxxxxx > Cc: netdev@xxxxxxxxxxxxxxx > Cc: linux-arch@xxxxxxxxxxxxxxx Reviewed-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx> > --- > arch/loongarch/include/asm/io.h | 2 -- > arch/m68k/include/asm/io_mm.h | 2 -- > arch/m68k/include/asm/kmap.h | 2 -- > arch/mips/include/asm/io.h | 5 ++--- > arch/powerpc/include/asm/io.h | 9 +-------- > arch/x86/include/asm/io.h | 5 ----- > drivers/net/ethernet/sfc/io.h | 2 +- > drivers/net/ethernet/sfc/siena/io.h | 2 +- > include/asm-generic/iomap.h | 6 +++--- > 9 files changed, 8 insertions(+), 27 deletions(-) > > diff --git a/arch/loongarch/include/asm/io.h b/arch/loongarch/include/asm/io.h > index 545e2708fbf7..5fef1246c6fb 100644 > --- a/arch/loongarch/include/asm/io.h > +++ b/arch/loongarch/include/asm/io.h > @@ -5,8 +5,6 @@ > #ifndef _ASM_IO_H > #define _ASM_IO_H > > -#define ARCH_HAS_IOREMAP_WC > - > #include <linux/kernel.h> > #include <linux/types.h> > > diff --git a/arch/m68k/include/asm/io_mm.h b/arch/m68k/include/asm/io_mm.h > index d41fa488453b..6a0abd4846c6 100644 > --- a/arch/m68k/include/asm/io_mm.h > +++ b/arch/m68k/include/asm/io_mm.h > @@ -26,8 +26,6 @@ > #include <asm/virtconvert.h> > #include <asm/kmap.h> > > -#include <asm-generic/iomap.h> > - > #ifdef CONFIG_ATARI > #define atari_readb raw_inb > #define atari_writeb raw_outb > diff --git a/arch/m68k/include/asm/kmap.h b/arch/m68k/include/asm/kmap.h > index dec05743d426..4efb3efa593a 100644 > --- a/arch/m68k/include/asm/kmap.h > +++ b/arch/m68k/include/asm/kmap.h > @@ -4,8 +4,6 @@ > > #ifdef CONFIG_MMU > > -#define ARCH_HAS_IOREMAP_WT > - > /* Values for nocacheflag and cmode */ > #define IOMAP_FULL_CACHING 0 > #define IOMAP_NOCACHE_SER 1 > diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h > index cc28d207a061..477773328a06 100644 > --- a/arch/mips/include/asm/io.h > +++ b/arch/mips/include/asm/io.h > @@ -12,8 +12,6 @@ > #ifndef _ASM_IO_H > #define _ASM_IO_H > > -#define ARCH_HAS_IOREMAP_WC > - > #include <linux/compiler.h> > #include <linux/kernel.h> > #include <linux/types.h> > @@ -25,7 +23,6 @@ > #include <asm/byteorder.h> > #include <asm/cpu.h> > #include <asm/cpu-features.h> > -#include <asm-generic/iomap.h> > #include <asm/page.h> > #include <asm/pgtable-bits.h> > #include <asm/processor.h> > @@ -210,6 +207,8 @@ void iounmap(const volatile void __iomem *addr); > #define ioremap_wc(offset, size) \ > ioremap_prot((offset), (size), boot_cpu_data.writecombine) > > +#include <asm-generic/iomap.h> > + > #if defined(CONFIG_CPU_CAVIUM_OCTEON) > #define war_io_reorder_wmb() wmb() > #else > diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h > index f1e657c9bbe8..67a3fb6de498 100644 > --- a/arch/powerpc/include/asm/io.h > +++ b/arch/powerpc/include/asm/io.h > @@ -3,11 +3,6 @@ > #define _ASM_POWERPC_IO_H > #ifdef __KERNEL__ > > -#define ARCH_HAS_IOREMAP_WC > -#ifdef CONFIG_PPC32 > -#define ARCH_HAS_IOREMAP_WT > -#endif > - > /* > */ > > @@ -732,9 +727,7 @@ static inline void name at \ > #define writel_relaxed(v, addr) writel(v, addr) > #define writeq_relaxed(v, addr) writeq(v, addr) > > -#ifdef CONFIG_GENERIC_IOMAP > -#include <asm-generic/iomap.h> > -#else > +#ifndef CONFIG_GENERIC_IOMAP > /* > * Here comes the implementation of the IOMAP interfaces. > */ > diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h > index e9025640f634..76238842406a 100644 > --- a/arch/x86/include/asm/io.h > +++ b/arch/x86/include/asm/io.h > @@ -35,9 +35,6 @@ > * - Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxx> > */ > > -#define ARCH_HAS_IOREMAP_WC > -#define ARCH_HAS_IOREMAP_WT > - > #include <linux/string.h> > #include <linux/compiler.h> > #include <linux/cc_platform.h> > @@ -212,8 +209,6 @@ void memset_io(volatile void __iomem *, int, size_t); > #define memcpy_toio memcpy_toio > #define memset_io memset_io > > -#include <asm-generic/iomap.h> > - > /* > * ISA space is 'always mapped' on a typical x86 system, no need to > * explicitly ioremap() it. The fact that the ISA IO space is mapped > diff --git a/drivers/net/ethernet/sfc/io.h b/drivers/net/ethernet/sfc/io.h > index 30439cc83a89..07f99ad14bf3 100644 > --- a/drivers/net/ethernet/sfc/io.h > +++ b/drivers/net/ethernet/sfc/io.h > @@ -70,7 +70,7 @@ > */ > #ifdef CONFIG_X86_64 > /* PIO is a win only if write-combining is possible */ > -#ifdef ARCH_HAS_IOREMAP_WC > +#ifdef ioremap_wc > #define EFX_USE_PIO 1 > #endif > #endif > diff --git a/drivers/net/ethernet/sfc/siena/io.h b/drivers/net/ethernet/sfc/siena/io.h > index 30439cc83a89..07f99ad14bf3 100644 > --- a/drivers/net/ethernet/sfc/siena/io.h > +++ b/drivers/net/ethernet/sfc/siena/io.h > @@ -70,7 +70,7 @@ > */ > #ifdef CONFIG_X86_64 > /* PIO is a win only if write-combining is possible */ > -#ifdef ARCH_HAS_IOREMAP_WC > +#ifdef ioremap_wc > #define EFX_USE_PIO 1 > #endif > #endif > diff --git a/include/asm-generic/iomap.h b/include/asm-generic/iomap.h > index 08237ae8b840..196087a8126e 100644 > --- a/include/asm-generic/iomap.h > +++ b/include/asm-generic/iomap.h > @@ -93,15 +93,15 @@ extern void __iomem *ioport_map(unsigned long port, unsigned int nr); > extern void ioport_unmap(void __iomem *); > #endif > > -#ifndef ARCH_HAS_IOREMAP_WC > +#ifndef ioremap_wc > #define ioremap_wc ioremap > #endif > > -#ifndef ARCH_HAS_IOREMAP_WT > +#ifndef ioremap_wt > #define ioremap_wt ioremap > #endif > > -#ifndef ARCH_HAS_IOREMAP_NP > +#ifndef ioremap_np > /* See the comment in asm-generic/io.h about ioremap_np(). */ > #define ioremap_np ioremap_np > static inline void __iomem *ioremap_np(phys_addr_t offset, size_t size) > -- > 2.34.1 > > -- Sincerely yours, Mike.
