linux-kernel - [RFC PATCH v2 01/10] riscv: Define ioremap

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Message-ID: <20251029112649.3811657-2-hchauhan@ventanamicro.com>
Date: Wed, 29 Oct 2025 16:56:39 +0530
From: Himanshu Chauhan <hchauhan@...tanamicro.com>
To: linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org,
	linux-efi@...r.kernel.org,
	acpica-devel@...ts.linux.dev
Cc: paul.walmsley@...ive.com,
	palmer@...belt.com,
	lenb@...nel.org,
	james.morse@....com,
	tony.luck@...el.com,
	ardb@...nel.org,
	conor@...nel.org,
	cleger@...osinc.com,
	robert.moore@...el.com,
	sunilvl@...tanamicro.com,
	apatel@...tanamicro.com,
	Himanshu Chauhan <hchauhan@...tanamicro.com>
Subject: [RFC PATCH v2 01/10] riscv: Define ioremap_cache for RISC-V

bert and einj drivers use ioremap_cache for mapping entries
but ioremap_cache is not defined for RISC-V.

Signed-off-by: Himanshu Chauhan <hchauhan@...tanamicro.com>
---
 arch/riscv/include/asm/io.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/riscv/include/asm/io.h b/arch/riscv/include/asm/io.h
index 09bb5f57a9d3..5550b28f38db 100644
--- a/arch/riscv/include/asm/io.h
+++ b/arch/riscv/include/asm/io.h
@@ -142,6 +142,9 @@ __io_writes_outs(outs, u64, q, __io_pbr(), __io_paw())
 #ifdef CONFIG_MMU
 #define arch_memremap_wb(addr, size, flags)	\
 	((__force void *)ioremap_prot((addr), (size), __pgprot(_PAGE_KERNEL)))
+
+#define ioremap_cache(addr, size)					\
+	((__force void *)ioremap_prot((addr), (size), PAGE_KERNEL))
 #endif
 
 #endif /* _ASM_RISCV_IO_H */
-- 
2.43.0