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Message-Id: <20230519195135.79600-1-jiaxun.yang@flygoat.com>
Date: Fri, 19 May 2023 20:51:35 +0100
From: Jiaxun Yang <jiaxun.yang@...goat.com>
To: linux-mips@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, tsbogend@...ha.franken.de,
linux-arch@...r.kernel.org, arnd@...db.de,
Jiaxun Yang <jiaxun.yang@...goat.com>,
Baoquan He <bhe@...hat.com>,
Huacai Chen <chenhuacai@...nel.org>
Subject: [PATCH v4] mips: add <asm-generic/io.h> including
With the adding, some default ioremap_xx methods defined in
asm-generic/io.h can be used. E.g the default ioremap_uc() returning
NULL.
We also massaged various headers to avoid nested includes.
Signed-off-by: Baoquan He <bhe@...hat.com>
Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
[jiaxun.yang@...goat.com: Massage more headers, fix ioport defines]
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: Huacai Chen <chenhuacai@...nel.org>
Cc: Jiaxun Yang <jiaxun.yang@...goat.com>
Cc: linux-mips@...r.kernel.org
---
Tested against qemu malta 34Kf, boston I6500, Loongson64, hopefully
everything is fine now.
---
arch/mips/include/asm/io.h | 65 +++++++++++++++++++++++++++++----
arch/mips/include/asm/mmiowb.h | 4 +-
arch/mips/include/asm/smp-ops.h | 2 -
arch/mips/include/asm/smp.h | 4 +-
arch/mips/kernel/setup.c | 1 +
arch/mips/pci/pci-ip27.c | 3 ++
6 files changed, 64 insertions(+), 15 deletions(-)
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index cc28d207a061..8508d01fb75e 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -15,7 +15,6 @@
#define ARCH_HAS_IOREMAP_WC
#include <linux/compiler.h>
-#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/irqflags.h>
@@ -28,7 +27,6 @@
#include <asm-generic/iomap.h>
#include <asm/page.h>
#include <asm/pgtable-bits.h>
-#include <asm/processor.h>
#include <asm/string.h>
#include <mangle-port.h>
@@ -44,6 +42,11 @@
# define __raw_ioswabq(a, x) (x)
# define ____raw_ioswabq(a, x) (x)
+# define _ioswabb ioswabb
+# define _ioswabw ioswabw
+# define _ioswabl ioswabl
+# define _ioswabq ioswabq
+
# define __relaxed_ioswabb ioswabb
# define __relaxed_ioswabw ioswabw
# define __relaxed_ioswabl ioswabl
@@ -129,6 +132,7 @@ static inline phys_addr_t virt_to_phys(const volatile void *x)
* almost all conceivable cases a device driver should not be using
* this function
*/
+#define phys_to_virt phys_to_virt
static inline void * phys_to_virt(unsigned long address)
{
return __va(address);
@@ -297,9 +301,9 @@ static inline type pfx##read##bwlq(const volatile void __iomem *mem) \
return pfx##ioswab##bwlq(__mem, __val); \
}
-#define __BUILD_IOPORT_SINGLE(pfx, bwlq, type, barrier, relax, p) \
+#define __BUILD_IOPORT_SINGLE(pfx, bwlq, type, barrier, relax) \
\
-static inline void pfx##out##bwlq##p(type val, unsigned long port) \
+static inline void pfx##out##bwlq(type val, unsigned long port) \
{ \
volatile type *__addr; \
type __val; \
@@ -319,7 +323,7 @@ static inline void pfx##out##bwlq##p(type val, unsigned long port) \
*__addr = __val; \
} \
\
-static inline type pfx##in##bwlq##p(unsigned long port) \
+static inline type pfx##in##bwlq(unsigned long port) \
{ \
volatile type *__addr; \
type __val; \
@@ -361,11 +365,10 @@ __BUILD_MEMORY_PFX(__mem_, q, u64, 0)
#endif
#define __BUILD_IOPORT_PFX(bus, bwlq, type) \
- __BUILD_IOPORT_SINGLE(bus, bwlq, type, 1, 0,) \
- __BUILD_IOPORT_SINGLE(bus, bwlq, type, 1, 0, _p)
+ __BUILD_IOPORT_SINGLE(bus, bwlq, type, 1, 0)
#define BUILDIO_IOPORT(bwlq, type) \
- __BUILD_IOPORT_PFX(, bwlq, type) \
+ __BUILD_IOPORT_PFX(_, bwlq, type) \
__BUILD_IOPORT_PFX(__mem_, bwlq, type)
BUILDIO_IOPORT(b, u8)
@@ -481,14 +484,17 @@ BUILDSTRING(l, u32)
BUILDSTRING(q, u64)
#endif
+#define memset_io memset_io
static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
{
memset((void __force *) addr, val, count);
}
+#define memcpy_fromio memcpy_fromio
static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
{
memcpy(dst, (void __force *) src, count);
}
+#define memcpy_toio memcpy_toio
static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
{
memcpy((void __force *) dst, src, count);
@@ -549,6 +555,47 @@ extern void (*_dma_cache_inv)(unsigned long start, unsigned long size);
#define csr_out32(v, a) (*(volatile u32 *)((unsigned long)(a) + __CSR_32_ADJUST) = (v))
#define csr_in32(a) (*(volatile u32 *)((unsigned long)(a) + __CSR_32_ADJUST))
+
+#define __raw_readb __raw_readb
+#define __raw_readw __raw_readw
+#define __raw_readl __raw_readl
+#define __raw_readq __raw_readq
+#define __raw_writeb __raw_writeb
+#define __raw_writew __raw_writew
+#define __raw_writel __raw_writel
+#define __raw_writeq __raw_writeq
+
+#define readb readb
+#define readw readw
+#define readl readl
+#define writeb writeb
+#define writew writew
+#define writel writel
+
+#define readsb readsb
+#define readsw readsw
+#define readsl readsl
+#define readsq readsq
+#define writesb writesb
+#define writesw writesw
+#define writesl writesl
+#define writesq writesq
+
+#define _inb _inb
+#define _inw _inw
+#define _inl _inl
+#define insb insb
+#define insw insw
+#define insl insl
+
+#define _outb _outb
+#define _outw _outw
+#define _outl _outl
+#define outsb outsb
+#define outsw outsw
+#define outsl outsl
+
+
/*
* Convert a physical pointer to a virtual kernel pointer for /dev/mem
* access
@@ -557,4 +604,6 @@ extern void (*_dma_cache_inv)(unsigned long start, unsigned long size);
void __ioread64_copy(void *to, const void __iomem *from, size_t count);
+#include <asm-generic/io.h>
+
#endif /* _ASM_IO_H */
diff --git a/arch/mips/include/asm/mmiowb.h b/arch/mips/include/asm/mmiowb.h
index a40824e3ef8e..cf27752fd220 100644
--- a/arch/mips/include/asm/mmiowb.h
+++ b/arch/mips/include/asm/mmiowb.h
@@ -2,9 +2,9 @@
#ifndef _ASM_MMIOWB_H
#define _ASM_MMIOWB_H
-#include <asm/io.h>
+#include <asm/barrier.h>
-#define mmiowb() iobarrier_w()
+#define mmiowb() wmb()
#include <asm-generic/mmiowb.h>
diff --git a/arch/mips/include/asm/smp-ops.h b/arch/mips/include/asm/smp-ops.h
index 5719ff49eff1..a6941b7f0cc0 100644
--- a/arch/mips/include/asm/smp-ops.h
+++ b/arch/mips/include/asm/smp-ops.h
@@ -13,8 +13,6 @@
#include <linux/errno.h>
-#include <asm/mips-cps.h>
-
#ifdef CONFIG_SMP
#include <linux/cpumask.h>
diff --git a/arch/mips/include/asm/smp.h b/arch/mips/include/asm/smp.h
index aab8981bc32c..125c3494a010 100644
--- a/arch/mips/include/asm/smp.h
+++ b/arch/mips/include/asm/smp.h
@@ -11,13 +11,11 @@
#ifndef __ASM_SMP_H
#define __ASM_SMP_H
-#include <linux/bitops.h>
+#include <linux/compiler.h>
#include <linux/linkage.h>
-#include <linux/smp.h>
#include <linux/threads.h>
#include <linux/cpumask.h>
-#include <linux/atomic.h>
#include <asm/smp-ops.h>
extern int smp_num_siblings;
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index febdc5564638..f9f149928e46 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -41,6 +41,7 @@
#include <asm/sections.h>
#include <asm/setup.h>
#include <asm/smp-ops.h>
+#include <asm/mips-cps.h>
#include <asm/prom.h>
#include <asm/fw/fw.h>
diff --git a/arch/mips/pci/pci-ip27.c b/arch/mips/pci/pci-ip27.c
index d85cbf84e41c..973faea61cad 100644
--- a/arch/mips/pci/pci-ip27.c
+++ b/arch/mips/pci/pci-ip27.c
@@ -7,6 +7,9 @@
* Copyright (C) 1999, 2000, 04 Ralf Baechle (ralf@...ux-mips.org)
* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
*/
+
+#include <linux/io.h>
+
#include <asm/sn/addrs.h>
#include <asm/sn/types.h>
#include <asm/sn/klconfig.h>
--
2.39.2 (Apple Git-143)
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