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iommu: remove DOMAIN_ATTR_NESTING

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Use an explicit enable_nesting method instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Li Yang <leoyang.li@nxp.com>
Link: https://lore.kernel.org/r/20210401155256.298656-17-hch@lst.de
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Christoph Hellwig
2021-04-01 17:52:52 +02:00
committed by Joerg Roedel
parent bc9a05eef1
commit 7e14754778
6 changed files with 55 additions and 68 deletions
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include/linux/iommu.h
+3 -1
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@@ -107,7 +107,6 @@ enum iommu_cap {
*/
enum iommu_attr {
DOMAIN_ATTR_NESTING, /* two stages of translation */
DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE,
DOMAIN_ATTR_IO_PGTABLE_CFG,
DOMAIN_ATTR_MAX,
@@ -210,6 +209,7 @@ struct iommu_iotlb_gather {
* @device_group: find iommu group for a particular device
* @domain_get_attr: Query domain attributes
* @domain_set_attr: Change domain attributes
* @enable_nesting: Enable nesting
* @get_resv_regions: Request list of reserved regions for a device
* @put_resv_regions: Free list of reserved regions for a device
* @apply_resv_region: Temporary helper call-back for iova reserved ranges
@@ -262,6 +262,7 @@ struct iommu_ops {
enum iommu_attr attr, void *data);
int (*domain_set_attr)(struct iommu_domain *domain,
enum iommu_attr attr, void *data);
int (*enable_nesting)(struct iommu_domain *domain);
/* Request/Free a list of reserved regions for a device */
void (*get_resv_regions)(struct device *dev, struct list_head *list);
@@ -511,6 +512,7 @@ extern int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr,
void *data);
extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr,
void *data);
int iommu_enable_nesting(struct iommu_domain *domain);
extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev,
unsigned long iova, int flags);