From: Christoph Hellwig <hch@lst.de>
To: Greg Ungerer <gerg@linux-m68k.org>, iommu@lists.linux.dev
Cc: Robin Murphy <robin.murphy@arm.com>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Wei Fang <wei.fang@nxp.com>, Shenwei Wang <shenwei.wang@nxp.com>,
Clark Wang <xiaoning.wang@nxp.com>,
NXP Linux Team <linux-imx@nxp.com>,
linux-m68k@lists.linux-m68k.org, netdev@vger.kernel.org,
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Subject: [PATCH 1/8] dma-direct: add depdenencies to CONFIG_DMA_GLOBAL_POOL
Date: Fri, 20 Oct 2023 07:40:17 +0200 [thread overview]
Message-ID: <20231020054024.78295-2-hch@lst.de> (raw)
In-Reply-To: <20231020054024.78295-1-hch@lst.de>
CONFIG_DMA_GLOBAL_POOL can't be combined with other DMA coherent
allocators. Add dependencies to Kconfig to document this, and make
kconfig complain about unment dependencies if someone tries.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Greg Ungerer <gerg@linux-m68k.org>
Tested-by: Greg Ungerer <gerg@linux-m68k.org>
---
kernel/dma/Kconfig | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
index f488997b071712..4524db877eba36 100644
--- a/kernel/dma/Kconfig
+++ b/kernel/dma/Kconfig
@@ -135,6 +135,8 @@ config DMA_COHERENT_POOL
config DMA_GLOBAL_POOL
select DMA_DECLARE_COHERENT
+ depends on !ARCH_HAS_DMA_SET_UNCACHED
+ depends on !DMA_DIRECT_REMAP
bool
config DMA_DIRECT_REMAP
--
2.39.2
next prev parent reply other threads:[~2023-10-20 5:40 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-20 5:40 fix the non-coherent coldfire dma_alloc_coherent v4 Christoph Hellwig
2023-10-20 5:40 ` Christoph Hellwig [this message]
2023-10-20 7:18 ` [PATCH 1/8] dma-direct: add depdenencies to CONFIG_DMA_GLOBAL_POOL Geert Uytterhoeven
2023-10-23 5:50 ` Christoph Hellwig
2023-10-20 5:40 ` [PATCH 2/8] dma-direct: add a CONFIG_ARCH_HAS_DMA_ALLOC symbol Christoph Hellwig
2023-10-20 5:40 ` [PATCH 3/8] dma-direct: simplify the use atomic pool logic in dma_direct_alloc Christoph Hellwig
2023-10-20 5:40 ` [PATCH 4/8] dma-direct: warn when coherent allocations aren't supported Christoph Hellwig
2023-10-20 5:40 ` [PATCH 5/8] m68k: use the coherent DMA code for coldfire without data cache Christoph Hellwig
2023-10-20 5:40 ` [PATCH 6/8] net: fec: use dma_alloc_noncoherent for data cache enabled coldfire Christoph Hellwig
2023-10-20 5:40 ` [PATCH 7/8] m68k: don't provide arch_dma_alloc for nommu/coldfire Christoph Hellwig
2023-10-20 5:40 ` [PATCH 8/8] m68k: remove unused includes from dma.c Christoph Hellwig
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