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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Oct 2022 18:18:56.5136 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: aff33bd5-fcb5-40ee-e84a-08daad476488 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT067.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB6094 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, SPF_HELO_PASS,SPF_NONE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support for clearing the BAR info during the deinitialization phase of the epf test driver. Signed-off-by: Vidya Sagar --- V2: * This is a new patch in this series drivers/pci/endpoint/functions/pci-epf-test.c | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c index 136470019a24..25ac3d161fac 100644 --- a/drivers/pci/endpoint/functions/pci-epf-test.c +++ b/drivers/pci/endpoint/functions/pci-epf-test.c @@ -826,6 +826,35 @@ static int pci_epf_test_core_init(struct pci_epf *epf) return 0; } +static int pci_epf_test_clear_bar(struct pci_epf *epf) +{ + int bar, add; + struct pci_epf_bar *epf_bar; + struct pci_epc *epc = epf->epc; + struct pci_epf_test *epf_test = epf_get_drvdata(epf); + const struct pci_epc_features *epc_features; + + epc_features = epf_test->epc_features; + + for (bar = 0; bar < PCI_STD_NUM_BARS; bar += add) { + epf_bar = &epf->bar[bar]; + add = (epf_bar->flags & PCI_BASE_ADDRESS_MEM_TYPE_64) ? 2 : 1; + + if (!!(epc_features->reserved_bar & (1 << bar))) + continue; + + pci_epc_clear_bar(epc, epf->func_no, epf->vfunc_no, epf_bar); + } + + return 0; +} + +static int pci_epf_test_core_deinit(struct pci_epf *epf) +{ + pci_epf_test_clear_bar(epf); + return 0; +} + int pci_epf_test_link_up(struct pci_epf *epf) { struct pci_epf_test *epf_test = epf_get_drvdata(epf); @@ -839,6 +868,7 @@ int pci_epf_test_link_up(struct pci_epf *epf) static const struct pci_epc_event_ops pci_epf_test_event_ops = { .core_init = pci_epf_test_core_init, .link_up = pci_epf_test_link_up, + .core_deinit = pci_epf_test_core_deinit, }; static int pci_epf_test_alloc_space(struct pci_epf *epf) -- 2.17.1