From 76c53dad6b5dc94e4c43069882b2708853c284c0 Mon Sep 17 00:00:00 2001
From: Caleb Connolly
Date: Mon, 11 Dec 2023 18:41:41 +0000
Subject: iommu: add a connect op

Add an optional iommu callback to be invoked before a device probes.
This can be used to configure the IOMMU in preparation for the device
(e.g. by allocating a context bank)

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
---
 include/iommu.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'include/iommu.h')

diff --git a/include/iommu.h b/include/iommu.h
index cf9719c5e91..b8ba0b8e707 100644
--- a/include/iommu.h
+++ b/include/iommu.h
@@ -4,6 +4,15 @@
 struct udevice;
 
 struct iommu_ops {
+	/**
+	 * init() - Connect a device to it's IOMMU, called before probe()
+	 * The iommu device can be fetched through dev->iommu
+	 *
+	 * @iommu_dev:	IOMMU device
+	 * @dev:	Device to connect
+	 * @return 0 if OK, -errno on error
+	 */
+	int (*connect)(struct udevice *dev);
 	/**
 	 * map() - map DMA memory
 	 *
-- 
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