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drivers: gpu: Fix IOMMU support for Linux v6.13

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In Linux v6.13, commit f6440fcc9c7b ("iommu: Remove
iommu_domain_alloc()") removed iommu_domain_alloc() and was replaced by
iommu_paging_domain_alloc(). Use conftest to detect if the function
iommu_paging_domain_alloc() is supported by the kernel and update the
Tegra DRM and Host1x drivers accordingly.

Bug 4991705

Change-Id: I86221d96232396fdb6bdccf40c412e029881c513
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3261695
(cherry picked from commit e374ac996dceee884296c9f1e53fdd0f281b3e0c)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3499750
Reviewed-by: Brad Griffis <bgriffis@nvidia.com>
Tested-by: Brad Griffis <bgriffis@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Jon Hunter
2024-12-04 10:40:41 +00:00
committed by mobile promotions
parent 0980dbb86e
commit 0a8d8b47c7
4 changed files with 33 additions and 0 deletions
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1
scripts/conftest/Makefile
View File

@@ -140,6 +140,7 @@ NV_CONFTEST_FUNCTION_COMPILE_TESTS += i2c_driver_struct_remove_return_type_int
NV_CONFTEST_FUNCTION_COMPILE_TESTS += i2c_mux_add_adapter_has_no_class_argument
NV_CONFTEST_FUNCTION_COMPILE_TESTS += iio_dev_opaque_has_mlock
NV_CONFTEST_FUNCTION_COMPILE_TESTS += iommu_map_has_gfp_arg
NV_CONFTEST_FUNCTION_COMPILE_TESTS += iommu_paging_domain_alloc
NV_CONFTEST_FUNCTION_COMPILE_TESTS += irq_get_nr_irqs
NV_CONFTEST_FUNCTION_COMPILE_TESTS += kthread_complete_and_exit
NV_CONFTEST_FUNCTION_COMPILE_TESTS += media_entity_remote_pad

17
scripts/conftest/conftest.sh
View File

@@ -7437,6 +7437,23 @@ compile_test() {
compile_check_conftest "$CODE" "NV_NETIF_NAPI_ADD_WEIGHT_PRESENT" "" "functions"
;;
iommu_paging_domain_alloc)
#
# Determine if iommu_paging_domain_alloc() function is present
#
# Added by commit a27bf2743cb8 ("iommu: Add iommu_paging_domain_alloc()
# interface") in Linux v6.11.
#
CODE="
#include <linux/iommu.h>
void conftest_iommu_paging_domain_alloc(void)
{
iommu_paging_domain_alloc();
}
"
compile_check_conftest "$CODE" "NV_IOMMU_PAGING_DOMAIN_ALLOC_PRESENT" "" "functions"
;;
iommu_map_has_gfp_arg)
#
# Determine if iommu_map() has 'gfp' argument.