diff options
| author | Jean-Philippe Brucker <jean-philippe@linaro.org> | 2021-04-01 18:47:11 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-04-07 11:54:28 +0300 |
| commit | 434b73e61cc65cdd26618af6fa4736c2ba1eb29b (patch) | |
| tree | 5399a66c1276f4f68215229084db299bc9320400 /drivers/acpi/arm64 | |
| parent | 0d35309ab5e080095190965aa7cfc3ca8fb88af9 (diff) | |
| download | linux-434b73e61cc65cdd26618af6fa4736c2ba1eb29b.tar.xz | |
iommu/arm-smmu-v3: Use device properties for pasid-num-bits
The pasid-num-bits property shouldn't need a dedicated fwspec field,
it's a job for device properties. Add properties for IORT, and access
the number of PASID bits using device_property_read_u32().
Suggested-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Will Deacon <will@kernel.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Acked-by: Hanjun Guo <guohanjun@huawei.com>
Link: https://lore.kernel.org/r/20210401154718.307519-3-jean-philippe@linaro.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/acpi/arm64')
| -rw-r--r-- | drivers/acpi/arm64/iort.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 2494138a6905..3912a1f6058e 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -968,15 +968,16 @@ static int iort_pci_iommu_init(struct pci_dev *pdev, u16 alias, void *data) static void iort_named_component_init(struct device *dev, struct acpi_iort_node *node) { + struct property_entry props[2] = {}; struct acpi_iort_named_component *nc; - struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); - - if (!fwspec) - return; nc = (struct acpi_iort_named_component *)node->node_data; - fwspec->num_pasid_bits = FIELD_GET(ACPI_IORT_NC_PASID_BITS, - nc->node_flags); + props[0] = PROPERTY_ENTRY_U32("pasid-num-bits", + FIELD_GET(ACPI_IORT_NC_PASID_BITS, + nc->node_flags)); + + if (device_add_properties(dev, props)) + dev_warn(dev, "Could not add device properties\n"); } static int iort_nc_iommu_map(struct device *dev, struct acpi_iort_node *node) |