linux-kernel - [RFC PATCH v1 01/10] riscv: Define ioremap

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Message-ID: <20250227123628.2931490-2-hchauhan@ventanamicro.com>
Date: Thu, 27 Feb 2025 18:06:19 +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 v1 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 1c5c641075d2..e23a4901e928 100644
--- a/arch/riscv/include/asm/io.h
+++ b/arch/riscv/include/asm/io.h
@@ -30,6 +30,9 @@
 #define PCI_IOBASE		((void __iomem *)PCI_IO_START)
 #endif /* CONFIG_MMU */
 
+#define ioremap_cache(addr, size)					\
+	((__force void *)ioremap_prot((addr), (size), _PAGE_KERNEL))
+
 /*
  * Emulation routines for the port-mapped IO space used by some PCI drivers.
  * These are defined as being "fully synchronous", but also "not guaranteed to
-- 
2.43.0