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