diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2023-09-28 02:47:35 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-10-26 17:53:51 +0300 |
| commit | 7993085d8d5d271a83045c5c7d01982a7e89a52e (patch) | |
| tree | 50754131c8b5918df8c7b53bb760a69c6a1aaa03 /drivers/iommu | |
| parent | 13fbceb1b8e9d1101d9dcd5ceec483cb6d203a3c (diff) | |
| download | linux-7993085d8d5d271a83045c5c7d01982a7e89a52e.tar.xz | |
iommu/dart: Use static global identity domains
Move to the new static global for identity domains. Move the identity
specific code to apple_dart_attach_dev_identity().
Reviewed-by: Janne Grunau <j@jannau.net>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Sven Peter <sven@svenpeter.dev>
Link: https://lore.kernel.org/r/5-v2-bff223cf6409+282-dart_paging_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/apple-dart.c | 39 |
1 files changed, 28 insertions, 11 deletions
diff --git a/drivers/iommu/apple-dart.c b/drivers/iommu/apple-dart.c index 2082081402d3..8776a5bb22de 100644 --- a/drivers/iommu/apple-dart.c +++ b/drivers/iommu/apple-dart.c @@ -659,11 +659,7 @@ static int apple_dart_attach_dev(struct iommu_domain *domain, struct apple_dart_master_cfg *cfg = dev_iommu_priv_get(dev); struct apple_dart_domain *dart_domain = to_dart_domain(domain); - if (cfg->stream_maps[0].dart->force_bypass && - domain->type != IOMMU_DOMAIN_IDENTITY) - return -EINVAL; - if (!cfg->stream_maps[0].dart->supports_bypass && - domain->type == IOMMU_DOMAIN_IDENTITY) + if (cfg->stream_maps[0].dart->force_bypass) return -EINVAL; ret = apple_dart_finalize_domain(domain, cfg); @@ -684,15 +680,35 @@ static int apple_dart_attach_dev(struct iommu_domain *domain, for_each_stream_map(i, cfg, stream_map) apple_dart_hw_disable_dma(stream_map); break; - case IOMMU_DOMAIN_IDENTITY: - for_each_stream_map(i, cfg, stream_map) - apple_dart_hw_enable_bypass(stream_map); - break; } return ret; } +static int apple_dart_attach_dev_identity(struct iommu_domain *domain, + struct device *dev) +{ + struct apple_dart_master_cfg *cfg = dev_iommu_priv_get(dev); + struct apple_dart_stream_map *stream_map; + int i; + + if (!cfg->stream_maps[0].dart->supports_bypass) + return -EINVAL; + + for_each_stream_map(i, cfg, stream_map) + apple_dart_hw_enable_bypass(stream_map); + return 0; +} + +static const struct iommu_domain_ops apple_dart_identity_ops = { + .attach_dev = apple_dart_attach_dev_identity, +}; + +static struct iommu_domain apple_dart_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &apple_dart_identity_ops, +}; + static struct iommu_device *apple_dart_probe_device(struct device *dev) { struct apple_dart_master_cfg *cfg = dev_iommu_priv_get(dev); @@ -723,7 +739,7 @@ static struct iommu_domain *apple_dart_domain_alloc(unsigned int type) struct apple_dart_domain *dart_domain; if (type != IOMMU_DOMAIN_DMA && type != IOMMU_DOMAIN_UNMANAGED && - type != IOMMU_DOMAIN_IDENTITY && type != IOMMU_DOMAIN_BLOCKED) + type != IOMMU_DOMAIN_BLOCKED) return NULL; dart_domain = kzalloc(sizeof(*dart_domain), GFP_KERNEL); @@ -733,7 +749,7 @@ static struct iommu_domain *apple_dart_domain_alloc(unsigned int type) mutex_init(&dart_domain->init_lock); /* no need to allocate pgtbl_ops or do any other finalization steps */ - if (type == IOMMU_DOMAIN_IDENTITY || type == IOMMU_DOMAIN_BLOCKED) + if (type == IOMMU_DOMAIN_BLOCKED) dart_domain->finalized = true; return &dart_domain->domain; @@ -948,6 +964,7 @@ static void apple_dart_get_resv_regions(struct device *dev, } static const struct iommu_ops apple_dart_iommu_ops = { + .identity_domain = &apple_dart_identity_domain, .domain_alloc = apple_dart_domain_alloc, .probe_device = apple_dart_probe_device, .release_device = apple_dart_release_device, |