netdev - [PATCH 17/17] iommu: remove iommu_domain_set

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Date:   Mon,  1 Mar 2021 09:42:57 +0100
From:   Christoph Hellwig <hch@....de>
To:     Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Li Yang <leoyang.li@....com>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        David Woodhouse <dwmw2@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        linuxppc-dev@...ts.ozlabs.org, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Subject: [PATCH 17/17] iommu: remove iommu_domain_set_attr

Signed-off-by: Christoph Hellwig <hch@....de>
---
 drivers/iommu/iommu.c | 17 -----------------
 include/linux/iommu.h | 27 ---------------------------
 2 files changed, 44 deletions(-)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 8490aefd4b41f8..b04e6cefe8520d 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -2668,23 +2668,6 @@ bool iommu_dma_use_flush_queue(struct iommu_domain *domain)
 }
 EXPORT_SYMBOL_GPL(iommu_dma_use_flush_queue);
 
-int iommu_domain_set_attr(struct iommu_domain *domain,
-			  enum iommu_attr attr, void *data)
-{
-	int ret = 0;
-
-	switch (attr) {
-	default:
-		if (domain->ops->domain_set_attr == NULL)
-			return -EINVAL;
-
-		ret = domain->ops->domain_set_attr(domain, attr, data);
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(iommu_domain_set_attr);
-
 int iommu_domain_enable_nesting(struct iommu_domain *domain)
 {
 	if (!domain->ops->domain_enable_nesting)
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 39d3ed4d2700ac..62535f563aa491 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -97,20 +97,6 @@ enum iommu_cap {
 	IOMMU_CAP_NOEXEC,		/* IOMMU_NOEXEC flag */
 };
 
-/*
- * Following constraints are specifc to FSL_PAMUV1:
- *  -aperture must be power of 2, and naturally aligned
- *  -number of windows must be power of 2, and address space size
- *   of each window is determined by aperture size / # of windows
- *  -the actual size of the mapped region of a window must be power
- *   of 2 starting with 4KB and physical address must be naturally
- *   aligned.
- */
-
-enum iommu_attr {
-	DOMAIN_ATTR_MAX,
-};
-
 /* These are the possible reserved region types */
 enum iommu_resv_type {
 	/* Memory regions which must be mapped 1:1 at all times */
@@ -194,7 +180,6 @@ struct iommu_iotlb_gather {
  * @device_group: find iommu group for a particular device
  * @dma_use_flush_queue: Returns %true if a DMA flush queue is used
  * @dma_enable_flush_queue: Try to enable the DMA flush queue
- * @domain_set_attr: Change domain attributes
  * @domain_enable_nesting: Enable nesting
  * @domain_set_pgtable_attr: Set io page table attributes
  * @get_resv_regions: Request list of reserved regions for a device
@@ -247,8 +232,6 @@ struct iommu_ops {
 	struct iommu_group *(*device_group)(struct device *dev);
 	bool (*dma_use_flush_queue)(struct iommu_domain *domain);
 	void (*dma_enable_flush_queue)(struct iommu_domain *domain);
-	int (*domain_set_attr)(struct iommu_domain *domain,
-			       enum iommu_attr attr, void *data);
 	int (*domain_enable_nesting)(struct iommu_domain *domain);
 	int (*domain_set_pgtable_attr)(struct iommu_domain *domain,
 			struct io_pgtable_domain_attr *pgtbl_cfg);
@@ -498,11 +481,7 @@ extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *);
 bool iommu_dma_use_flush_queue(struct iommu_domain *domain);
 int iommu_domain_set_pgtable_attr(struct iommu_domain *domain,
 		struct io_pgtable_domain_attr *pgtbl_cfg);
-extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr,
-				 void *data);
 int iommu_domain_enable_nesting(struct iommu_domain *domain);
-int iommu_domain_set_pgtable_attr(struct iommu_domain *domain,
-		struct io_pgtable_domain_attr *pgtbl_cfg);
 
 extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev,
 			      unsigned long iova, int flags);
@@ -869,12 +848,6 @@ static inline int iommu_group_id(struct iommu_group *group)
 	return -ENODEV;
 }
 
-static inline int iommu_domain_set_attr(struct iommu_domain *domain,
-					enum iommu_attr attr, void *data)
-{
-	return -EINVAL;
-}
-
 static inline int  iommu_device_register(struct iommu_device *iommu)
 {
 	return -ENODEV;
-- 
2.29.2