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| author | Niklas Cassel <cassel@kernel.org> | 2026-03-12 16:02:36 +0300 |
|---|---|---|
| committer | Manivannan Sadhasivam <mani@kernel.org> | 2026-03-15 19:34:28 +0300 |
| commit | 50a1fd6e5ee3fd93e1a5a49fb9c76ca44ac13b8b (patch) | |
| tree | 228b9ea8ff9866ed483f7a4f3f4fe6632dafc142 | |
| parent | 0f08179c8c29bc5ab23906d2ab5409d98a4ca110 (diff) | |
| download | linux-50a1fd6e5ee3fd93e1a5a49fb9c76ca44ac13b8b.tar.xz | |
PCI: endpoint: pci-epf-test: Advertise reserved BARs
Advertise reserved BARs as reserved in the Capabilities register,
such that the host side driver will be able to skip reserved BARs.
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Tested-by: Koichiro Den <den@valinux.co.jp>
Tested-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Reviewed-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260312130229.2282001-20-cassel@kernel.org
| -rw-r--r-- | drivers/pci/endpoint/functions/pci-epf-test.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index 6030ae1373b1..14e61ebe1f11 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -65,6 +65,12 @@ #define CAP_INTX BIT(3) #define CAP_SUBRANGE_MAPPING BIT(4) #define CAP_DYNAMIC_INBOUND_MAPPING BIT(5) +#define CAP_BAR0_RESERVED BIT(6) +#define CAP_BAR1_RESERVED BIT(7) +#define CAP_BAR2_RESERVED BIT(8) +#define CAP_BAR3_RESERVED BIT(9) +#define CAP_BAR4_RESERVED BIT(10) +#define CAP_BAR5_RESERVED BIT(11) #define PCI_EPF_TEST_BAR_SUBRANGE_NSUB 2 @@ -1112,6 +1118,24 @@ static void pci_epf_test_set_capabilities(struct pci_epf *epf) epf_test->epc_features->subrange_mapping) caps |= CAP_SUBRANGE_MAPPING; + if (epf_test->epc_features->bar[BAR_0].type == BAR_RESERVED) + caps |= CAP_BAR0_RESERVED; + + if (epf_test->epc_features->bar[BAR_1].type == BAR_RESERVED) + caps |= CAP_BAR1_RESERVED; + + if (epf_test->epc_features->bar[BAR_2].type == BAR_RESERVED) + caps |= CAP_BAR2_RESERVED; + + if (epf_test->epc_features->bar[BAR_3].type == BAR_RESERVED) + caps |= CAP_BAR3_RESERVED; + + if (epf_test->epc_features->bar[BAR_4].type == BAR_RESERVED) + caps |= CAP_BAR4_RESERVED; + + if (epf_test->epc_features->bar[BAR_5].type == BAR_RESERVED) + caps |= CAP_BAR5_RESERVED; + reg->caps = cpu_to_le32(caps); } |