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Message-ID: <20240722154519.25375-2-palmer@rivosinc.com>
Date: Mon, 22 Jul 2024 08:45:20 -0700
From: Palmer Dabbelt <palmer@...osinc.com>
To: Conor Dooley <conor@...nel.org>, emil.renner.berthing@...onical.com
Cc: Conor Dooley <conor@...nel.org>, linux-riscv@...ts.infradead.org,
linux-kernel@...r.kernel.org, Palmer Dabbelt <palmer@...osinc.com>,
Conor Dooley <conor.dooley@...rochip.com>
Subject: [PATCH v2] cache: StarFive: Require a 64-bit system
From: Palmer Dabbelt <palmer@...osinc.com>
This has a bunch of {read,write}q() calls, so it won't work on 32-bit
systems. I don't think there's any 32-bit StarFive systems, so for now
just require 64-bit.
Fixes: cabff60ca77d ("cache: Add StarFive StarLink cache management")
Acked-by: Conor Dooley <conor.dooley@...rochip.com>
Signed-off-by: Palmer Dabbelt <palmer@...osinc.com>
---
Changes since v1 <20240719163841.19018-1-palmer@...osinc.com>:
* Drop the STARLINK_CACHE_ADDRESS_RANGE_MASK chunk, it's meaningless
without 32-bit support (as Emil pointed out on IRC).
---
drivers/cache/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/cache/Kconfig b/drivers/cache/Kconfig
index 94abd8f632a7..db51386c663a 100644
--- a/drivers/cache/Kconfig
+++ b/drivers/cache/Kconfig
@@ -18,6 +18,7 @@ config STARFIVE_STARLINK_CACHE
bool "StarFive StarLink Cache controller"
depends on RISCV
depends on ARCH_STARFIVE
+ depends on 64BIT
select RISCV_DMA_NONCOHERENT
select RISCV_NONSTANDARD_CACHE_OPS
help
--
2.45.2
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