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PCI: Fix endpoint DMA test for Linux v6.9

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Building the PCI EPF DMA test driver for Linux v6.9 is failing because
the parameters for the pci_epf_alloc_space() function has been updated
to pass the alignment value via the 'pci_epc_features' structure instead
of passing the value directly.

Instead of hard-coding the endpoint alignment in the EPF DMA test driver
use the 'pcie_epc_get_features()' function to retrieve the endpoint
features structure which has the endpoint alignment.

By using the conftest script to detect the parameters for the
pci_epf_alloc_space() function, we can then pass the appropriate
arguments to the pci_epf_alloc_space() function.

Bug 4471899

Change-Id: Id80259a4c90d6f6ae2132cccbec1a96113d22be7
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3116548
(cherry picked from commit 971680aadb)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3128431
Tested-by: Brad Griffis <bgriffis@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Brad Griffis <bgriffis@nvidia.com>
This commit is contained in:
Jon Hunter
2024-04-15 13:35:29 +01:00
committed by mobile promotions
parent 83238f4563
commit 28f1253514
3 changed files with 39 additions and 3 deletions
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22
scripts/conftest/conftest.sh
View File

@@ -7321,6 +7321,28 @@ compile_test() {
compile_check_conftest "$CODE" "NV_PCI_ENABLE_PCIE_ERROR_REPORTING_PRESENT" "" "functions"
;;
pci_epf_alloc_space_has_epc_features_arg)
#
# Determine if the function pci_epf_alloc_space() has a
# 'epc_features' argument.
#
# Commit e891becdccaa ("PCI: endpoint: Refactor
# pci_epf_alloc_space() API") updated the pci_epf_alloc_space()
# function to accept 'epc_features' as a parameter in Linux v6.9.
#
CODE="
#include <linux/pci-epc.h>
#include <linux/pci-epf.h>
void conftest_pci_epf_alloc_space_has_epc_features_arg(
struct pci_epf *epf, size_t size, enum pci_barno bar,
const struct pci_epc_features *epc_features,
enum pci_epc_interface_type type) {
pci_epf_alloc_space(epf, size, bar, epc_features, type);
}"
compile_check_conftest "$CODE" "NV_PCI_EPF_ALLOC_SPACE_HAS_EPC_FEATURES_ARG" "" "types"
;;
pci_epf_driver_struct_probe_has_id_arg)
#
# Determine if the struct pci_epf_driver probe API has ID argument or not.