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iommu/fsl_pamu: remove fsl_pamu_get_domain_attr 

None of the values returned by this function are ever queried.  Also
remove the DOMAIN_ATTR_FSL_PAMUV1 enum value that is not otherwise used.

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/20210401155256.298656-3-hch@lst.de
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Christoph Hellwig 2021-04-01 17:52:38 +02:00 committed by Joerg Roedel
parent 47685cb202
commit 392825e0c7
2 changed files with 0 additions and 34 deletions
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30
drivers/iommu/fsl_pamu_domain.c
View File

@ -832,35 +832,6 @@ static int fsl_pamu_set_domain_attr(struct iommu_domain *domain,
return ret;
}
static int fsl_pamu_get_domain_attr(struct iommu_domain *domain,
enum iommu_attr attr_type, void *data)
{
struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain);
int ret = 0;
switch (attr_type) {
case DOMAIN_ATTR_FSL_PAMU_STASH:
memcpy(data, &dma_domain->dma_stash,
sizeof(struct pamu_stash_attribute));
break;
case DOMAIN_ATTR_FSL_PAMU_ENABLE:
*(int *)data = dma_domain->enabled;
break;
case DOMAIN_ATTR_FSL_PAMUV1:
*(int *)data = DOMAIN_ATTR_FSL_PAMUV1;
break;
case DOMAIN_ATTR_WINDOWS:
*(u32 *)data = dma_domain->win_cnt;
break;
default:
pr_debug("Unsupported attribute type\n");
ret = -EINVAL;
break;
}
return ret;
}
static struct iommu_group *get_device_iommu_group(struct device *dev)
{
struct iommu_group *group;
@ -987,7 +958,6 @@ static const struct iommu_ops fsl_pamu_ops = {
.domain_window_enable = fsl_pamu_window_enable,
.iova_to_phys = fsl_pamu_iova_to_phys,
.domain_set_attr = fsl_pamu_set_domain_attr,
.domain_get_attr = fsl_pamu_get_domain_attr,
.probe_device = fsl_pamu_probe_device,
.release_device = fsl_pamu_release_device,
.device_group = fsl_pamu_device_group,

4
include/linux/iommu.h
View File

@ -104,9 +104,6 @@ enum iommu_cap {
* -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.
* DOMAIN_ATTR_FSL_PAMUV1 corresponds to the above mentioned contraints.
* The caller can invoke iommu_domain_get_attr to check if the underlying
* iommu implementation supports these constraints.
*/
enum iommu_attr {
@ -115,7 +112,6 @@ enum iommu_attr {
DOMAIN_ATTR_WINDOWS,
DOMAIN_ATTR_FSL_PAMU_STASH,
DOMAIN_ATTR_FSL_PAMU_ENABLE,
DOMAIN_ATTR_FSL_PAMUV1,
DOMAIN_ATTR_NESTING, /* two stages of translation */
DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE,
DOMAIN_ATTR_IO_PGTABLE_CFG,