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authorChristoph Hellwig <hch@lst.de>2021-04-01 18:52:46 +0300
committerJoerg Roedel <jroedel@suse.de>2021-04-07 11:56:52 +0300
commit7d61cb6ff0122a017ae907aed62478a4db9c5991 (patch)
treef11d75b2222a900c311302be26c3471eb84dd9eb /drivers/iommu/fsl_pamu_domain.c
parent85e362ca462548092b744acbaed9472ab14706b0 (diff)
downloadlinux-7d61cb6ff0122a017ae907aed62478a4db9c5991.tar.xz
iommu/fsl_pamu: enable the liodn when attaching a device
Instead of a separate call to enable all devices from the list, just enable the liodn once the device is attached to the iommu domain. This also remove the DOMAIN_ATTR_FSL_PAMU_ENABLE iommu_attr. 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/20210401155256.298656-11-hch@lst.de Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/fsl_pamu_domain.c')
-rw-r--r--drivers/iommu/fsl_pamu_domain.c47
1 files changed, 3 insertions, 44 deletions
diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c
index 41927c3c4177..c2e7e17570e7 100644
--- a/drivers/iommu/fsl_pamu_domain.c
+++ b/drivers/iommu/fsl_pamu_domain.c
@@ -195,9 +195,6 @@ static void fsl_pamu_domain_free(struct iommu_domain *domain)
/* remove all the devices from the device list */
detach_device(NULL, dma_domain);
-
- dma_domain->enabled = 0;
-
kmem_cache_free(fsl_pamu_domain_cache, dma_domain);
}
@@ -285,6 +282,9 @@ static int fsl_pamu_attach_device(struct iommu_domain *domain,
ret = pamu_set_liodn(dma_domain, dev, liodn[i]);
if (ret)
break;
+ ret = pamu_enable_liodn(liodn[i]);
+ if (ret)
+ break;
}
spin_unlock_irqrestore(&dma_domain->domain_lock, flags);
return ret;
@@ -341,46 +341,6 @@ int fsl_pamu_configure_l1_stash(struct iommu_domain *domain, u32 cpu)
return ret;
}
-/* Configure domain dma state i.e. enable/disable DMA */
-static int configure_domain_dma_state(struct fsl_dma_domain *dma_domain, bool enable)
-{
- struct device_domain_info *info;
- unsigned long flags;
- int ret;
-
- spin_lock_irqsave(&dma_domain->domain_lock, flags);
- dma_domain->enabled = enable;
- list_for_each_entry(info, &dma_domain->devices, link) {
- ret = (enable) ? pamu_enable_liodn(info->liodn) :
- pamu_disable_liodn(info->liodn);
- if (ret)
- pr_debug("Unable to set dma state for liodn %d",
- info->liodn);
- }
- spin_unlock_irqrestore(&dma_domain->domain_lock, flags);
-
- return 0;
-}
-
-static int fsl_pamu_set_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_ENABLE:
- ret = configure_domain_dma_state(dma_domain, *(int *)data);
- 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;
@@ -505,7 +465,6 @@ static const struct iommu_ops fsl_pamu_ops = {
.attach_dev = fsl_pamu_attach_device,
.detach_dev = fsl_pamu_detach_device,
.iova_to_phys = fsl_pamu_iova_to_phys,
- .domain_set_attr = fsl_pamu_set_domain_attr,
.probe_device = fsl_pamu_probe_device,
.release_device = fsl_pamu_release_device,
.device_group = fsl_pamu_device_group,