{"id":2197407,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2197407/?format=json","project":{"id":28,"url":"http://patchwork.ozlabs.org/api/1.0/projects/28/?format=json","name":"Linux PCI development","link_name":"linux-pci","list_id":"linux-pci.vger.kernel.org","list_email":"linux-pci@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"<20260217212707.2450423-18-cassel@kernel.org>","date":"2026-02-17T21:27:13","name":"[7/9] PCI: endpoint: pci-epf-test: Advertise reserved BARs","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"c904ac8c6f1a4093522e4aecb138d45ab6ab6607","submitter":{"id":87751,"url":"http://patchwork.ozlabs.org/api/1.0/people/87751/?format=json","name":"Niklas Cassel","email":"cassel@kernel.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260217212707.2450423-18-cassel@kernel.org/mbox/","series":[{"id":492482,"url":"http://patchwork.ozlabs.org/api/1.0/series/492482/?format=json","date":"2026-02-17T21:27:06","name":"PCI: endpoint differentiate between disabled and reserved BARs","version":1,"mbox":"http://patchwork.ozlabs.org/series/492482/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2197407/checks/","tags":{},"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-pci@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=EyZxnW1N;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.234.253.10; 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a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1771363693;\n\tbh=moOr43+8cgHi9wm8VK/VhU0rAqHCm9nUnhjiJ2bEXPU=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=EyZxnW1Navz3e4neb0omd0ETRXGAPGXCFRYo0Q8WRDqhigy19rTFVlq5fY5S2s1cP\n\t o6VMuJtSddSO5e1AbV7dWMUhoC48ZFEkbCABmqYUm/P3a1DfE7cQS6rCenhz7gCR9z\n\t Byp6rEip0JuBG9sMckr2UqgNb29qXEJOMq3Z1kcaqZyYbW7LHkwkPXTsLSZV0HjUQ3\n\t yaA8YE3D5Zs6lyN2S4DEDPhcTLun28A9fdY/DF1sy3TQAT4FdNFF9eyzRNDEzShp41\n\t sxADCC5CRzXD4fPnpCCNIb4se3y16mT2JqRqLAtUOhiCMSgenUURVtJIgtEYYxFgTT\n\t vnLQhiNlBUXrQ==","From":"Niklas Cassel ","To":"Manivannan Sadhasivam , =?utf-8?q?Krzysztof_Wilczy?=\n\t=?utf-8?q?=C5=84ski?= ,\n Kishon Vijay Abraham I ,\n Bjorn Helgaas ","Cc":"Manikanta Maddireddy ,\n\tKoichiro Den ,\n\tDamien Le Moal ,\n\tNiklas Cassel ,\n\tlinux-pci@vger.kernel.org","Subject":"[PATCH 7/9] PCI: endpoint: pci-epf-test: Advertise reserved BARs","Date":"Tue, 17 Feb 2026 22:27:13 +0100","Message-ID":"<20260217212707.2450423-18-cassel@kernel.org>","X-Mailer":"git-send-email 2.53.0","In-Reply-To":"<20260217212707.2450423-11-cassel@kernel.org>","References":"<20260217212707.2450423-11-cassel@kernel.org>","Precedence":"bulk","X-Mailing-List":"linux-pci@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","X-Developer-Signature":"v=1; a=openpgp-sha256; l=1753; i=cassel@kernel.org;\n h=from:subject; bh=moOr43+8cgHi9wm8VK/VhU0rAqHCm9nUnhjiJ2bEXPU=;\n b=owGbwMvMwCV2MsVw8cxjvkWMp9WSGDKn3DVoDuK66WDs3jgt5etcO5WO2kSpoqy4SRJsD5Jf1\n 8y573S6o5SFQYyLQVZMkcX3h8v+4m73KccV79jAzGFlAhnCwMUpABMpOMzI8OHsnuKw7y2it1U0\n 5r2K1nDbFVpt55Qr8StslsGLTwdmbWVk2CP/xWebaZpWsUffn/8tsW3p9ZM/L2CdqBLLuGfN3bw\n 8PgA=","X-Developer-Key":"i=cassel@kernel.org; a=openpgp;\n fpr=5ADE635C0E631CBBD5BE065A352FE6582ED9B5DA","Content-Transfer-Encoding":"8bit"},"content":"Advertise reserved BARs as reserved in the Capabilities register,\nsuch that the host side driver will be able to skip reserved BARs.\n\nSigned-off-by: Niklas Cassel \n---\n drivers/pci/endpoint/functions/pci-epf-test.c | 24 +++++++++++++++++++\n 1 file changed, 24 insertions(+)","diff":"diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c\nindex 0cb7af0919dc..4c7e42fe5d8e 100644\n--- a/drivers/pci/endpoint/functions/pci-epf-test.c\n+++ b/drivers/pci/endpoint/functions/pci-epf-test.c\n@@ -64,6 +64,12 @@\n #define CAP_MSIX\t\t\tBIT(2)\n #define CAP_INTX\t\t\tBIT(3)\n #define CAP_SUBRANGE_MAPPING\t\tBIT(4)\n+#define CAP_BAR0_RESERVED\t\tBIT(5)\n+#define CAP_BAR1_RESERVED\t\tBIT(6)\n+#define CAP_BAR2_RESERVED\t\tBIT(7)\n+#define CAP_BAR3_RESERVED\t\tBIT(8)\n+#define CAP_BAR4_RESERVED\t\tBIT(9)\n+#define CAP_BAR5_RESERVED\t\tBIT(10)\n \n #define PCI_EPF_TEST_BAR_SUBRANGE_NSUB\t2\n \n@@ -1106,6 +1112,24 @@ static void pci_epf_test_set_capabilities(struct pci_epf *epf)\n \t epf_test->epc_features->subrange_mapping)\n \t\tcaps |= CAP_SUBRANGE_MAPPING;\n \n+\tif (epf_test->epc_features->bar[BAR_0].type == BAR_RESERVED)\n+\t\tcaps |= CAP_BAR0_RESERVED;\n+\n+\tif (epf_test->epc_features->bar[BAR_1].type == BAR_RESERVED)\n+\t\tcaps |= CAP_BAR1_RESERVED;\n+\n+\tif (epf_test->epc_features->bar[BAR_2].type == BAR_RESERVED)\n+\t\tcaps |= CAP_BAR2_RESERVED;\n+\n+\tif (epf_test->epc_features->bar[BAR_3].type == BAR_RESERVED)\n+\t\tcaps |= CAP_BAR3_RESERVED;\n+\n+\tif (epf_test->epc_features->bar[BAR_4].type == BAR_RESERVED)\n+\t\tcaps |= CAP_BAR4_RESERVED;\n+\n+\tif (epf_test->epc_features->bar[BAR_5].type == BAR_RESERVED)\n+\t\tcaps |= CAP_BAR5_RESERVED;\n+\n \treg->caps = cpu_to_le32(caps);\n }\n \n","prefixes":["7/9"]}