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30 lines
1.0 KiB
Diff
30 lines
1.0 KiB
Diff
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From e6c39c2219f9d308ea57c09fc1b0b5b151b52b7d Mon Sep 17 00:00:00 2001
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From: Laurentiu Tudor <laurentiu.tudor@nxp.com>
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Date: Mon, 16 Apr 2018 11:33:11 +0300
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Subject: [PATCH] bus: fsl-mc: define macros for iommu enablement for fsl-mc
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bus
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Macros to get coherency and the container device of the devices on
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fsl-mc bus are required to suport SMMU for this bus. This patch
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defines the same.
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Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
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Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
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---
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include/linux/fsl/mc.h | 4 ++++
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1 file changed, 4 insertions(+)
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--- a/include/linux/fsl/mc.h
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+++ b/include/linux/fsl/mc.h
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@@ -356,6 +356,10 @@ int mc_send_command(struct fsl_mc_io *mc
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#define fsl_mc_cont_dev(_dev) (fsl_mc_is_cont_dev(_dev) ? \
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(_dev) : (_dev)->parent)
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+#define fsl_mc_is_dev_coherent(_dev) \
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+ (!((to_fsl_mc_device(_dev))->obj_desc.flags & \
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+ FSL_MC_OBJ_FLAG_NO_MEM_SHAREABILITY))
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+
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/*
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* module_fsl_mc_driver() - Helper macro for drivers that don't do
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* anything special in module init/exit. This eliminates a lot of
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