[PATCH AUTOSEL 6.0 16/46] sparc: Fix the generic IO helpers

Sasha Levin
2022-10-11T14:52:05Z

From: Linus Walleij <linus.walleij@linaro.org>

[ Upstream commit 2c230431e1e809270178905974f57cf3878939f5 ]

This enables the Sparc to use <asm-generic/io.h> to fill in the
missing (undefined) [read|write]sq I/O accessor functions.

This is needed if Sparc[64] ever wants to uses CONFIG_REGMAP_MMIO
which has been patches to use accelerated _noinc accessors
such as readsq/writesq that Sparc64, while being a 64bit platform,
as of now not yet provide.

This comes with the requirement that everything the architecture
already provides needs to be defined, rather than just being,
say, static inline functions.

Bite the bullet and just provide the definitions and make it work.
Compile-tested on sparc32 and sparc64.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: Mark Brown <broonie@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/linux-arm-kernel/202208201639.HXye3ke4-lkp@intel.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/sparc/include/asm/io.h | 2 ++
arch/sparc/include/asm/io_64.h | 22 ++++++++++++++++++++++
2 files changed, 24 insertions(+)

diff --git a/arch/sparc/include/asm/io.h b/arch/sparc/include/asm/io.h
index 2eefa526b38f..2dad9be9ec75 100644
--- a/arch/sparc/include/asm/io.h
+++ b/arch/sparc/include/asm/io.h
@@ -19,4 +19,6 @@
#define writel_be(__w, __addr) __raw_writel(__w, __addr)
#define writew_be(__l, __addr) __raw_writew(__l, __addr)

+#include <asm-generic/io.h>
+
#endif
diff --git a/arch/sparc/include/asm/io_64.h b/arch/sparc/include/asm/io_64.h
index 5ffa820dcd4d..9303270b22f3 100644
--- a/arch/sparc/include/asm/io_64.h
+++ b/arch/sparc/include/asm/io_64.h
@@ -9,6 +9,7 @@
#include <asm/page.h> /* IO address mapping routines need this */
#include <asm/asi.h>
#include <asm-generic/pci_iomap.h>
+#define pci_iomap pci_iomap

/* BIO layer definitions. */
extern unsigned long kern_base, kern_size;
@@ -239,38 +240,51 @@ static inline void outl(u32 l, unsigned long addr)
void outsb(unsigned long, const void *, unsigned long);
void outsw(unsigned long, const void *, unsigned long);
void outsl(unsigned long, const void *, unsigned long);
+#define outsb outsb
+#define outsw outsw
+#define outsl outsl
void insb(unsigned long, void *, unsigned long);
void insw(unsigned long, void *, unsigned long);
void insl(unsigned long, void *, unsigned long);
+#define insb insb
+#define insw insw
+#define insl insl

static inline void readsb(void __iomem *port, void *buf, unsigned long count)
{
insb((unsigned long __force)port, buf, count);
}
+#define readsb readsb
+
static inline void readsw(void __iomem *port, void *buf, unsigned long count)
{
insw((unsigned long __force)port, buf, count);
}
+#define readsw readsw

static inline void readsl(void __iomem *port, void *buf, unsigned long count)
{
insl((unsigned long __force)port, buf, count);
}
+#define readsl readsl

static inline void writesb(void __iomem *port, const void *buf, unsigned long count)
{
outsb((unsigned long __force)port, buf, count);
}
+#define writesb writesb

static inline void writesw(void __iomem *port, const void *buf, unsigned long count)
{
outsw((unsigned long __force)port, buf, count);
}
+#define writesw writesw

static inline void writesl(void __iomem *port, const void *buf, unsigned long count)
{
outsl((unsigned long __force)port, buf, count);
}
+#define writesl writesl

#define ioread8_rep(p,d,l) readsb(p,d,l)
#define ioread16_rep(p,d,l) readsw(p,d,l)
@@ -344,6 +358,7 @@ static inline void memset_io(volatile void __iomem *dst, int c, __kernel_size_t
d++;
}
}
+#define memset_io memset_io

static inline void sbus_memcpy_fromio(void *dst, const volatile void __iomem *src,
__kernel_size_t n)
@@ -369,6 +384,7 @@ static inline void memcpy_fromio(void *dst, const volatile void __iomem *src,
src++;
}
}
+#define memcpy_fromio memcpy_fromio

static inline void sbus_memcpy_toio(volatile void __iomem *dst, const void *src,
__kernel_size_t n)
@@ -395,6 +411,7 @@ static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
d++;
}
}
+#define memcpy_toio memcpy_toio

#ifdef __KERNEL__

@@ -412,7 +429,9 @@ static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
static inline void __iomem *ioremap_np(unsigned long offset, unsigned long size)
{
return NULL;
+
}
+#define ioremap_np ioremap_np

static inline void iounmap(volatile void __iomem *addr)
{
@@ -432,10 +451,13 @@ static inline void iounmap(volatile void __iomem *addr)
/* Create a virtual mapping cookie for an IO port range */
void __iomem *ioport_map(unsigned long port, unsigned int nr);
void ioport_unmap(void __iomem *);
+#define ioport_map ioport_map
+#define ioport_unmap ioport_unmap

/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
struct pci_dev;
void pci_iounmap(struct pci_dev *dev, void __iomem *);
+#define pci_iounmap pci_iounmap

static inline int sbus_can_dma_64bit(void)
{
--
2.35.1