[PATCH RFC 09/17] iommu: Add iommu_fwspec_append_ids()
From: Jason Gunthorpe <jgg@nvidia.com>
Date: 2023-11-03 16:46:15
Also in:
asahi, linux-acpi, linux-arm-kernel, linux-devicetree, linux-iommu, linux-mips, linux-riscv, linux-tegra
Subsystem:
iommu subsystem, the rest · Maintainers:
Joerg Roedel, Will Deacon, Linus Torvalds
This is a version of iommu_fwspec_add_ids() that takes in the fwspec as an argument instead of getting it through dev->iommu. Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> --- drivers/iommu/iommu.c | 17 +++++++++++------ include/linux/iommu.h | 1 + 2 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index ad2963d69a0538..15dbe2d9eb24c2 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c@@ -3067,15 +3067,10 @@ int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode, } EXPORT_SYMBOL_GPL(iommu_fwspec_init); - -int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids) +int iommu_fwspec_append_ids(struct iommu_fwspec *fwspec, u32 *ids, int num_ids) { - struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); int i, new_num; - if (!fwspec) - return -EINVAL; - new_num = fwspec->num_ids + num_ids; if (new_num <= 1) { if (fwspec->ids != &fwspec->single_id)
@@ -3097,6 +3092,16 @@ int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids) fwspec->num_ids = new_num; return 0; } +EXPORT_SYMBOL_GPL(iommu_fwspec_append_ids); + +int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids) +{ + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); + + if (!fwspec) + return -EINVAL; + return iommu_fwspec_append_ids(fwspec, ids, num_ids); +} EXPORT_SYMBOL_GPL(iommu_fwspec_add_ids); /*
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 2644c61b572b8f..c5a5e2b5e2cc2a 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h@@ -700,6 +700,7 @@ static inline void iommu_fwspec_free(struct device *dev) } int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids); const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode); +int iommu_fwspec_append_ids(struct iommu_fwspec *fwspec, u32 *ids, int num_ids); static inline struct iommu_fwspec *dev_iommu_fwspec_get(struct device *dev) {
--
2.42.0