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selftests: pci_endpoint: Skip BAR subrange test on -ENOSPC

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In pci-epf-test.c, set the STATUS_NO_RESOURCE status bit if
pci_epc_set_bar() returns -ENOSPC.  This status bit is used to indicate
that there are not enough inbound window resources to allocate the
subrange.

In pci_endpoint_test.c, return -ENOSPC instead of -EIO when
STATUS_NO_RESOURCE is set.

In pci_endpoint_test.c, skip the BAR subrange test if -ENOSPC, i.e., there
are not enough inbound window resources to run the test.

Signed-off-by: Christian Bruel <christian.bruel@foss.st.com>
[mani: commit log]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
[bhelgaas: squash related commits]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Koichiro Den <den@valinux.co.jp>
Link: https://patch.msgid.link/20260407-skip-bar_subrange-tests-if-enospc-v4-1-6f2e65f2298c@foss.st.com
Link: https://patch.msgid.link/20260407-skip-bar_subrange-tests-if-enospc-v4-2-6f2e65f2298c@foss.st.com
Link: https://patch.msgid.link/20260407-skip-bar_subrange-tests-if-enospc-v4-3-6f2e65f2298c@foss.st.com
This commit is contained in:
Christian Bruel
2026-04-07 14:04:08 +02:00
committed by Bjorn Helgaas
parent 5ab7a22588
commit 1d3225cb5d
3 changed files with 7 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/misc/pci_endpoint_test.c
View File

@@ -61,6 +61,7 @@
#define STATUS_BAR_SUBRANGE_SETUP_FAIL BIT(15)
#define STATUS_BAR_SUBRANGE_CLEAR_SUCCESS BIT(16)
#define STATUS_BAR_SUBRANGE_CLEAR_FAIL BIT(17)
#define STATUS_NO_RESOURCE BIT(18)
#define PCI_ENDPOINT_TEST_LOWER_SRC_ADDR 0x0c
#define PCI_ENDPOINT_TEST_UPPER_SRC_ADDR 0x10
@@ -480,7 +481,7 @@ static int pci_endpoint_test_bar_subrange_cmd(struct pci_endpoint_test *test,
status = pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_STATUS);
if (status & fail_bit)
return -EIO;
return (status & STATUS_NO_RESOURCE) ? -ENOSPC : -EIO;
if (!(status & ok_bit))
return -EIO;

3
drivers/pci/endpoint/functions/pci-epf-test.c
View File

@@ -54,6 +54,7 @@
#define STATUS_BAR_SUBRANGE_SETUP_FAIL BIT(15)
#define STATUS_BAR_SUBRANGE_CLEAR_SUCCESS BIT(16)
#define STATUS_BAR_SUBRANGE_CLEAR_FAIL BIT(17)
#define STATUS_NO_RESOURCE BIT(18)
#define FLAG_USE_DMA BIT(0)
@@ -901,6 +902,8 @@ static void pci_epf_test_bar_subrange_setup(struct pci_epf_test *epf_test,
ret = pci_epc_set_bar(epc, epf->func_no, epf->vfunc_no, bar);
if (ret) {
dev_err(&epf->dev, "pci_epc_set_bar() failed: %d\n", ret);
if (ret == -ENOSPC)
status |= STATUS_NO_RESOURCE;
bar->submap = old_submap;
bar->num_submap = old_nsub;
kfree(submap);

2
tools/testing/selftests/pci_endpoint/pci_endpoint_test.c
View File

@@ -88,6 +88,8 @@ TEST_F(pci_ep_bar, BAR_SUBRANGE_TEST)
SKIP(return, "Subrange map is not supported");
if (ret == -ENOBUFS)
SKIP(return, "BAR is reserved");
if (ret == -ENOSPC)
SKIP(return, "Not enough inbound windows");
EXPECT_FALSE(ret) TH_LOG("Test failed for BAR%d", variant->barno);
}