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Message-ID: <20230313175521.GA14404@alpha.franken.de>
Date: Mon, 13 Mar 2023 18:55:21 +0100
From: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To: Baoquan He <bhe@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
linux-mm@...ck.org, arnd@...db.de, mpe@...erman.id.au,
geert@...ux-m68k.org, mcgrof@...nel.org, hch@...radead.org,
Helge Deller <deller@....de>,
Serge Semin <fancer.lancer@...il.com>,
Florian Fainelli <f.fainelli@...il.com>,
Huacai Chen <chenhuacai@...nel.org>,
Jiaxun Yang <jiaxun.yang@...goat.com>,
linux-mips@...r.kernel.org
Subject: Re: [PATCH v4 2/4] mips: add <asm-generic/io.h> including
On Wed, Mar 08, 2023 at 09:07:08PM +0800, Baoquan He wrote:
> 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.
>
> Signed-off-by: Baoquan He <bhe@...hat.com>
> Reviewed-by: Arnd Bergmann <arnd@...db.de>
> Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
> Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
> Cc: Helge Deller <deller@....de>
> Cc: Serge Semin <fancer.lancer@...il.com>
> Cc: Florian Fainelli <f.fainelli@...il.com>
> Cc: Huacai Chen <chenhuacai@...nel.org>
> Cc: Jiaxun Yang <jiaxun.yang@...goat.com>
> Cc: linux-mips@...r.kernel.org
> ---
> arch/mips/include/asm/io.h | 78 ++++++++++++++++++++++++++++++++++----
> 1 file changed, 70 insertions(+), 8 deletions(-)
>
> diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
> index cec8347f0b85..6756baadba6c 100644
> --- a/arch/mips/include/asm/io.h
> +++ b/arch/mips/include/asm/io.h
> @@ -126,6 +126,7 @@ 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);
> @@ -359,6 +360,27 @@ __BUILD_MEMORY_PFX(__raw_, q, u64, 0)
> __BUILD_MEMORY_PFX(__mem_, q, u64, 0)
> #endif
>
> +#define readb readb
> +#define readw readw
> +#define readl readl
> +#define writeb writeb
> +#define writew writew
> +#define writel writel
> +
> +#ifdef CONFIG_64BIT
> +#define readq readq
> +#define writeq writeq
> +#define __raw_readq __raw_readq
> +#define __raw_writeq __raw_writeq
> +#endif
> +
> +#define __raw_readb __raw_readb
> +#define __raw_readw __raw_readw
> +#define __raw_readl __raw_readl
> +#define __raw_writeb __raw_writeb
> +#define __raw_writew __raw_writew
> +#define __raw_writel __raw_writel
> +
> #define __BUILD_IOPORT_PFX(bus, bwlq, type) \
> __BUILD_IOPORT_SINGLE(bus, bwlq, type, 1, 0,) \
> __BUILD_IOPORT_SINGLE(bus, bwlq, type, 1, 0, _p)
> @@ -374,6 +396,27 @@ BUILDIO_IOPORT(l, u32)
> BUILDIO_IOPORT(q, u64)
> #endif
>
> +#define inb inb
> +#define inw inw
> +#define inl inl
> +#define inb_p inb_p
> +#define inw_p inw_p
> +#define inl_p inl_p
> +
> +#define outb outb
> +#define outw outw
> +#define outl outl
> +#define outb_p outb_p
> +#define outw_p outw_p
> +#define outl_p outl_p
> +
> +#ifdef CONFIG_64BIT
> +#define inq inq
> +#define outq outq
> +#define inq_p inq_p
> +#define outq_p outq_p
> +#endif
> +
> #define __BUILDIO(bwlq, type) \
> \
> __BUILD_MEMORY_SINGLE(____raw_, bwlq, type, 1, 0, 0)
> @@ -412,14 +455,6 @@ __BUILDIO(q, u64)
> #define writeq_be(val, addr) \
> __raw_writeq(cpu_to_be64((val)), (__force unsigned *)(addr))
>
> -/*
> - * Some code tests for these symbols
> - */
> -#ifdef CONFIG_64BIT
> -#define readq readq
> -#define writeq writeq
> -#endif
> -
> #define __BUILD_MEMORY_STRING(bwlq, type) \
> \
> static inline void writes##bwlq(volatile void __iomem *mem, \
> @@ -480,14 +515,39 @@ BUILDSTRING(l, u32)
> BUILDSTRING(q, u64)
> #endif
>
> +#define insb insb
> +#define insw insw
> +#define insl insl
> +#define outsb outsb
> +#define outsw outsw
> +#define outsl outsl
> +
> +#define readsb readsb
> +#define readsw readsw
> +#define readsl readsl
> +#define writesb writesb
> +#define writesw writesw
> +#define writesl writesl
> +
> +#ifdef CONFIG_64BIT
> +#define insq insq
> +#define readsq readsq
> +#define readsq readsq
> +#define writesq writesq
> +#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);
> @@ -556,4 +616,6 @@ 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>
this #include blows up builds with:
GEN Makefile
Checking missing-syscalls for N32
CALL /local/tbogendoerfer/korg/linux/scripts/checksyscalls.sh
Checking missing-syscalls for O32
CALL /local/tbogendoerfer/korg/linux/scripts/checksyscalls.sh
CALL /local/tbogendoerfer/korg/linux/scripts/checksyscalls.sh
CC init/version.o
In file included from /local/tbogendoerfer/korg/linux/include/linux/spinlock.h:311:0,
from /local/tbogendoerfer/korg/linux/include/linux/vmalloc.h:5,
from /local/tbogendoerfer/korg/linux/include/asm-generic/io.h:994,
from /local/tbogendoerfer/korg/linux/arch/mips/include/asm/io.h:618,
from /local/tbogendoerfer/korg/linux/include/linux/io.h:13,
from /local/tbogendoerfer/korg/linux/arch/mips/include/asm/mips-cps.h:11,
from /local/tbogendoerfer/korg/linux/arch/mips/include/asm/smp-ops.h:16,
from /local/tbogendoerfer/korg/linux/arch/mips/include/asm/smp.h:21,
from /local/tbogendoerfer/korg/linux/include/linux/smp.h:113,
from /local/tbogendoerfer/korg/linux/include/linux/lockdep.h:14,
from /local/tbogendoerfer/korg/linux/include/linux/rcupdate.h:29,
from /local/tbogendoerfer/korg/linux/include/linux/rculist.h:11,
from /local/tbogendoerfer/korg/linux/include/linux/pid.h:5,
from /local/tbogendoerfer/korg/linux/include/linux/sched.h:14,
from /local/tbogendoerfer/korg/linux/include/linux/utsname.h:6,
from /local/tbogendoerfer/korg/linux/init/version.c:17:
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h: In function ‘__raw_spin_trylock’:
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h:90:3: error: implicit declaration of function ‘spin_acquire’ [-Werror=implicit-function-declaration]
spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
^~~~~~~~~~~~
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h:90:21: error: ‘raw_spinlock_t {aka struct raw_spinlock}’ has no member named ‘dep_map’
spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
^~
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h: In function ‘__raw_spin_lock_irqsave’:
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h:110:20: error: ‘raw_spinlock_t {aka struct raw_spinlock}’ has no member named ‘dep_map’
spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
^~
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h:111:2: error: implicit declaration of function ‘LOCK_CONTENDED’ [-Werror=implicit-function-declaration]
LOCK_CONTENDED(lock, do_raw_spin_trylock, do_raw_spin_lock);
^~~~~~~~~~~~~~
GEN Makefile
Checking missing-syscalls for N32
CALL /local/tbogendoerfer/korg/linux/scripts/checksyscalls.sh
Checking missing-syscalls for O32
CALL /local/tbogendoerfer/korg/linux/scripts/checksyscalls.sh
CALL /local/tbogendoerfer/korg/linux/scripts/checksyscalls.sh
CC init/version.o
In file included from /local/tbogendoerfer/korg/linux/include/linux/spinlock.h:311:0,
from /local/tbogendoerfer/korg/linux/include/linux/vmalloc.h:5,
from /local/tbogendoerfer/korg/linux/include/asm-generic/io.h:994,
from /local/tbogendoerfer/korg/linux/arch/mips/include/asm/io.h:618,
from /local/tbogendoerfer/korg/linux/include/linux/io.h:13,
from /local/tbogendoerfer/korg/linux/arch/mips/include/asm/mips-cps.h:11,
from /local/tbogendoerfer/korg/linux/arch/mips/include/asm/smp-ops.h:16,
from /local/tbogendoerfer/korg/linux/arch/mips/include/asm/smp.h:21,
from /local/tbogendoerfer/korg/linux/include/linux/smp.h:113,
from /local/tbogendoerfer/korg/linux/include/linux/lockdep.h:14,
from /local/tbogendoerfer/korg/linux/include/linux/rcupdate.h:29,
from /local/tbogendoerfer/korg/linux/include/linux/rculist.h:11,
from /local/tbogendoerfer/korg/linux/include/linux/pid.h:5,
from /local/tbogendoerfer/korg/linux/include/linux/sched.h:14,
from /local/tbogendoerfer/korg/linux/include/linux/utsname.h:6,
from /local/tbogendoerfer/korg/linux/init/version.c:17:
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h: In function ‘__raw_spin_trylock’:
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h:90:3: error: implicit declaration of function ‘spin_acquire’ [-Werror=implicit-function-declaration]
spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
^~~~~~~~~~~~
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h:90:21: error: ‘raw_spinlock_t {aka struct raw_spinlock}’ has no member named ‘dep_map’
spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
^~
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h: In function ‘__raw_spin_lock_irqsave’:
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h:110:20: error: ‘raw_spinlock_t {aka struct raw_spinlock}’ has no member named ‘dep_map’
spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
^~
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h:111:2: error: implicit declaration of function ‘LOCK_CONTENDED’ [-Werror=implicit-function-declaration]
LOCK_CONTENDED(lock, do_raw_spin_trylock, do_raw_spin_lock);
^~~~~~~~~~~~~~
GEN Makefile
Checking missing-syscalls for N32
CALL /local/tbogendoerfer/korg/linux/scripts/checksyscalls.sh
Checking missing-syscalls for O32
CALL /local/tbogendoerfer/korg/linux/scripts/checksyscalls.sh
CALL /local/tbogendoerfer/korg/linux/scripts/checksyscalls.sh
CC init/version.o
In file included from /local/tbogendoerfer/korg/linux/include/linux/spinlock.h:311:0,
from /local/tbogendoerfer/korg/linux/include/linux/vmalloc.h:5,
from /local/tbogendoerfer/korg/linux/include/asm-generic/io.h:994,
from /local/tbogendoerfer/korg/linux/arch/mips/include/asm/io.h:618,
from /local/tbogendoerfer/korg/linux/include/linux/io.h:13,
from /local/tbogendoerfer/korg/linux/arch/mips/include/asm/mips-cps.h:11,
from /local/tbogendoerfer/korg/linux/arch/mips/include/asm/smp-ops.h:16,
from /local/tbogendoerfer/korg/linux/arch/mips/include/asm/smp.h:21,
from /local/tbogendoerfer/korg/linux/include/linux/smp.h:113,
from /local/tbogendoerfer/korg/linux/include/linux/lockdep.h:14,
from /local/tbogendoerfer/korg/linux/include/linux/rcupdate.h:29,
from /local/tbogendoerfer/korg/linux/include/linux/rculist.h:11,
from /local/tbogendoerfer/korg/linux/include/linux/pid.h:5,
from /local/tbogendoerfer/korg/linux/include/linux/sched.h:14,
from /local/tbogendoerfer/korg/linux/include/linux/utsname.h:6,
from /local/tbogendoerfer/korg/linux/init/version.c:17:
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h: In function ‘__raw_spin_trylock’:
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h:90:3: error: implicit declaration of function ‘spin_acquire’ [-Werror=implicit-function-declaration]
spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
^~~~~~~~~~~~
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h:90:21: error: ‘raw_spinlock_t {aka struct raw_spinlock}’ has no member named ‘dep_map’
spin_acquire(&lock->dep_map, 0, 1, _RET_IP_);
^~
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h: In function ‘__raw_spin_lock_irqsave’:
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h:110:20: error: ‘raw_spinlock_t {aka struct raw_spinlock}’ has no member named ‘dep_map’
spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);
^~
/local/tbogendoerfer/korg/linux/include/linux/spinlock_api_smp.h:111:2: error: implicit declaration of function ‘LOCK_CONTENDED’ [-Werror=implicit-function-declaration]
LOCK_CONTENDED(lock, do_raw_spin_trylock, do_raw_spin_lock);
^~~~~~~~~~~~~~
[...]
I've cut the compiler output. Removing the asm-generic doesn't show this
problem, but so far I fail to see the reason...
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
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