From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DBA9552F8B for ; Thu, 12 Mar 2026 13:03:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773320613; cv=none; b=LDSNs99MWUjuG692FE7vtaFSXyXd2Zw8xv0lv8aPeKjTPY/9f0uOCJZxMDO78Hm6ZJo1aZmFBfY+CEdqAty8CcHYGTai5vpPgJCzGeW/3x5vw+M0bZHglS0KcwqBpUYaQJFFzu5nPiL0cvkAA0UPgZv1Y033aS9YvBpaT1Kt5uQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773320613; c=relaxed/simple; bh=KYeYSNaOiSRsuc5EvvU+T4wUhSzMG+L8k9xSmOuJGzM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=l7Q0g0vOAvpFlzGAdeOn7+QA9x1998S4RDfEMU5r1IOMBxL5mJYGKqfubcIkpOO/LUuF2lVkNxam/NC8dJoBE1UIJ7r+YxfjKZA8KSJ3MwmVnZLO31grpVB09IxUPNAYAmaSW1Kg1CYU5DG1BJLrSb6tSzBnQEXukU2afnrL+3w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CeEhIn1p; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CeEhIn1p" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9EFA1C2BC87; Thu, 12 Mar 2026 13:03:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773320613; bh=KYeYSNaOiSRsuc5EvvU+T4wUhSzMG+L8k9xSmOuJGzM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CeEhIn1pVe7VxkWS/vPJXeVWmf9T78HMAzyLwEbl091zR1chF1/jT9luW47W1726f 3qtkvvmCdxRqq27DqczZZF/a108liJc25UdDqdIhzWvKkgfuqN4XL0HZtuPztoHT31 bs6BbLw/hG6+DEs7c9WuXSg3N5A8O/VIf+R1qb6YKVy141mj7AP69aVoNdCO3XnPSq JygF9GfJjT64BgviUIxQ7stRD67qJlGYeQcgPBLOa1ecwZesyZT299ZVXplwEKpTIi tS5DnVgCD3Lf+nIJ2b1yT1eDzKw20+nYGfl37icZnQhgjK7qtGYldr2IuJOcSUlSRG HF5FcsZsNrmaQ== From: Niklas Cassel To: Manivannan Sadhasivam , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Kishon Vijay Abraham I , Bjorn Helgaas Cc: Manikanta Maddireddy , Koichiro Den , Damien Le Moal , Niklas Cassel , Frank Li , linux-pci@vger.kernel.org Subject: [PATCH v4 08/10] PCI: endpoint: pci-epf-test: Advertise reserved BARs Date: Thu, 12 Mar 2026 14:02:36 +0100 Message-ID: <20260312130229.2282001-20-cassel@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260312130229.2282001-12-cassel@kernel.org> References: <20260312130229.2282001-12-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=1976; i=cassel@kernel.org; h=from:subject; bh=KYeYSNaOiSRsuc5EvvU+T4wUhSzMG+L8k9xSmOuJGzM=; b=owGbwMvMwCV2MsVw8cxjvkWMp9WSGDI37cw/KP5ssbn7Qv/ZqQvnTpm351vW8iSfkt3lBSx1J 3IW7Til2lHKwiDGxSArpsji+8Nlf3G3+5TjindsYOawMoEMYeDiFICJ9L5gZDjb5mEmfElg83c/ i33zWD7/vG/9n+3jcZE152+9EFHcvtOD4a/Itiy/Kxa5z1z8D0RP3L9/ccDzBZp1R3ao8ORF3Pn sWc4PAA== X-Developer-Key: i=cassel@kernel.org; a=openpgp; fpr=5ADE635C0E631CBBD5BE065A352FE6582ED9B5DA Content-Transfer-Encoding: 8bit Advertise reserved BARs as reserved in the Capabilities register, such that the host side driver will be able to skip reserved BARs. Tested-by: Manikanta Maddireddy Reviewed-by: Manikanta Maddireddy Reviewed-by: Frank Li Tested-by: Koichiro Den Signed-off-by: Niklas Cassel --- drivers/pci/endpoint/functions/pci-epf-test.c | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) 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); } -- 2.53.0