47 lines
1.6 KiB
Diff
47 lines
1.6 KiB
Diff
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From 63b41f22a9f5c9aed64f63b1c07a162bcfd21f7f Mon Sep 17 00:00:00 2001
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From: "v.v.mitrofanov" <v.v.mitrofanov@yadro.com>
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Date: Fri, 4 Feb 2022 14:57:30 +0300
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Subject: [PATCH] util: Add barriers support for RISC-V
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Add barriers support for RISC-V architecture
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Signed-off-by: v.v.mitrofanov <v.v.mitrofanov@yadro.com>
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---
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util/udma_barrier.h | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/util/udma_barrier.h b/util/udma_barrier.h
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index 5730576e..ea562b18 100644
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--- a/util/udma_barrier.h
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+++ b/util/udma_barrier.h
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@@ -98,6 +98,8 @@
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#define udma_to_device_barrier() asm volatile("" ::: "memory")
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#elif defined(__loongarch__)
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#define udma_to_device_barrier() asm volatile("dbar 0" ::: "memory")
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+#elif defined(__riscv)
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+#define udma_to_device_barrier() asm volatile("fence ow,ow" ::: "memory")
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#else
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#error No architecture specific memory barrier defines found!
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#endif
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@@ -132,6 +134,8 @@
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#define udma_from_device_barrier() asm volatile("" ::: "memory")
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#elif defined(__loongarch__)
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#define udma_from_device_barrier() asm volatile("dbar 0" ::: "memory")
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+#elif defined(__riscv)
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+#define udma_from_device_barrier() asm volatile("fence ir,ir" ::: "memory")
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#else
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#error No architecture specific memory barrier defines found!
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#endif
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@@ -198,6 +202,8 @@
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#define mmio_flush_writes() asm volatile("" ::: "memory")
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#elif defined(__loongarch__)
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#define mmio_flush_writes() asm volatile("dbar 0" ::: "memory")
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+#elif defined(__riscv)
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+#define mmio_flush_writes() asm volatile("fence ow,ow" ::: "memory")
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#else
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#error No architecture specific memory barrier defines found!
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#endif
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--
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2.35.0
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