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From: Xianting Tian <xianting.tian@linux.alibaba.com>
To: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	Xianting Tian <xianting.tian@linux.alibaba.com>
Subject: [PATCH] riscv: add ARCH_DMA_MINALIGN support
Date: Sat,  7 Aug 2021 22:55:37 +0800	[thread overview]
Message-ID: <20210807145537.124744-1-xianting.tian@linux.alibaba.com> (raw)

Introduce ARCH_DMA_MINALIGN to riscv arch.

Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
---
 arch/riscv/include/asm/cache.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/riscv/include/asm/cache.h b/arch/riscv/include/asm/cache.h
index 9b58b1045..2945bbe2b 100644
--- a/arch/riscv/include/asm/cache.h
+++ b/arch/riscv/include/asm/cache.h
@@ -11,6 +11,8 @@
 
 #define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
 
+#define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
+
 /*
  * RISC-V requires the stack pointer to be 16-byte aligned, so ensure that
  * the flat loader aligns it accordingly.
-- 
2.17.1


WARNING: multiple messages have this Message-ID (diff)
From: Xianting Tian <xianting.tian@linux.alibaba.com>
To: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
	Xianting Tian <xianting.tian@linux.alibaba.com>
Subject: [PATCH] riscv: add ARCH_DMA_MINALIGN support
Date: Sat,  7 Aug 2021 22:55:37 +0800	[thread overview]
Message-ID: <20210807145537.124744-1-xianting.tian@linux.alibaba.com> (raw)

Introduce ARCH_DMA_MINALIGN to riscv arch.

Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
---
 arch/riscv/include/asm/cache.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/riscv/include/asm/cache.h b/arch/riscv/include/asm/cache.h
index 9b58b1045..2945bbe2b 100644
--- a/arch/riscv/include/asm/cache.h
+++ b/arch/riscv/include/asm/cache.h
@@ -11,6 +11,8 @@
 
 #define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
 
+#define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
+
 /*
  * RISC-V requires the stack pointer to be 16-byte aligned, so ensure that
  * the flat loader aligns it accordingly.
-- 
2.17.1


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             reply	other threads:[~2021-08-07 14:55 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-07 14:55 Xianting Tian [this message]
2021-08-07 14:55 ` [PATCH] riscv: add ARCH_DMA_MINALIGN support Xianting Tian
2021-08-08 16:30 ` Jisheng Zhang
2021-08-08 16:30   ` Jisheng Zhang
2021-08-09  1:55   ` Xianting TIan
2021-08-09  1:55     ` Xianting TIan
2021-08-10  1:30     ` Guo Ren
2021-08-10  1:30       ` Guo Ren
2021-08-09  6:20   ` Xianting TIan
2021-08-09  6:20     ` Xianting TIan
2021-08-09  7:49     ` Arnd Bergmann
2021-08-09  7:49       ` Arnd Bergmann
2021-08-09  9:00       ` Xianting TIan
2021-08-09  9:00         ` Xianting TIan
2021-08-09 19:19       ` Atish Patra
2021-08-09 19:19         ` Atish Patra

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