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mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-09-04 20:19:47 +08:00
linux/rust/helpers/io.c
Daniel Almeida 493fc33ec2 rust: io: add resource abstraction
In preparation for ioremap support, add a Rust abstraction for struct
resource.

A future commit will introduce the Rust API to ioremap a resource from a
platform device. The current abstraction, therefore, adds only the
minimum API needed to get that done.

Acked-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Co-developed-by: Fiona Behrens <me@kloenk.dev>
Signed-off-by: Fiona Behrens <me@kloenk.dev>
Signed-off-by: Daniel Almeida <daniel.almeida@collabora.com>
Link: https://lore.kernel.org/r/20250717-topics-tyr-platform_iomem-v15-1-beca780b77e3@collabora.com
[ Capitalize safety comments and end it with a period. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2025-07-20 19:43:04 +02:00

138 lines
2.5 KiB
C

// SPDX-License-Identifier: GPL-2.0
#include <linux/io.h>
#include <linux/ioport.h>
void __iomem *rust_helper_ioremap(phys_addr_t offset, size_t size)
{
return ioremap(offset, size);
}
void rust_helper_iounmap(void __iomem *addr)
{
iounmap(addr);
}
u8 rust_helper_readb(const void __iomem *addr)
{
return readb(addr);
}
u16 rust_helper_readw(const void __iomem *addr)
{
return readw(addr);
}
u32 rust_helper_readl(const void __iomem *addr)
{
return readl(addr);
}
#ifdef CONFIG_64BIT
u64 rust_helper_readq(const void __iomem *addr)
{
return readq(addr);
}
#endif
void rust_helper_writeb(u8 value, void __iomem *addr)
{
writeb(value, addr);
}
void rust_helper_writew(u16 value, void __iomem *addr)
{
writew(value, addr);
}
void rust_helper_writel(u32 value, void __iomem *addr)
{
writel(value, addr);
}
#ifdef CONFIG_64BIT
void rust_helper_writeq(u64 value, void __iomem *addr)
{
writeq(value, addr);
}
#endif
u8 rust_helper_readb_relaxed(const void __iomem *addr)
{
return readb_relaxed(addr);
}
u16 rust_helper_readw_relaxed(const void __iomem *addr)
{
return readw_relaxed(addr);
}
u32 rust_helper_readl_relaxed(const void __iomem *addr)
{
return readl_relaxed(addr);
}
#ifdef CONFIG_64BIT
u64 rust_helper_readq_relaxed(const void __iomem *addr)
{
return readq_relaxed(addr);
}
#endif
void rust_helper_writeb_relaxed(u8 value, void __iomem *addr)
{
writeb_relaxed(value, addr);
}
void rust_helper_writew_relaxed(u16 value, void __iomem *addr)
{
writew_relaxed(value, addr);
}
void rust_helper_writel_relaxed(u32 value, void __iomem *addr)
{
writel_relaxed(value, addr);
}
#ifdef CONFIG_64BIT
void rust_helper_writeq_relaxed(u64 value, void __iomem *addr)
{
writeq_relaxed(value, addr);
}
#endif
resource_size_t rust_helper_resource_size(struct resource *res)
{
return resource_size(res);
}
struct resource *rust_helper_request_mem_region(resource_size_t start,
resource_size_t n,
const char *name)
{
return request_mem_region(start, n, name);
}
void rust_helper_release_mem_region(resource_size_t start, resource_size_t n)
{
release_mem_region(start, n);
}
struct resource *rust_helper_request_region(resource_size_t start,
resource_size_t n, const char *name)
{
return request_region(start, n, name);
}
struct resource *rust_helper_request_muxed_region(resource_size_t start,
resource_size_t n,
const char *name)
{
return request_muxed_region(start, n, name);
}
void rust_helper_release_region(resource_size_t start, resource_size_t n)
{
release_region(start, n);
}