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 165D439449C for ; Mon, 2 Mar 2026 10:00:37 +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=1772445638; cv=none; b=NXN/S6JgcZG25fb/UC9RC4gAF7o5B2Ww6+X7ICjMoLT4SDWy/lDO1fxk/4jqSaRn+yfbkzBns/1CmfuqI7Vve33wS5ejPeihvFsqNApdsr7e1tzMEqPWzpQ5UlMJGb+88zRUZmnyJssxUobxBkw1D3esCRfdE/f16+pRYtSj/Hk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772445638; c=relaxed/simple; bh=KYeYSNaOiSRsuc5EvvU+T4wUhSzMG+L8k9xSmOuJGzM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DVyji352vEz3988XFfr/ahofKSIKCYtZOPtuWeRL+Ald0XeZaxFtuuSUymgwfGgRsYMWn02CNdHUVmeLLBFxduxaYzlRSUL1e1x475vzLDy/jKc7pYAnxz+tOhplg5VeKXeASKcKpP3EACHrUCYmc6P+J1LebcN0ukePdhAPG3g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=sCy34/L0; 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="sCy34/L0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A066CC19425; Mon, 2 Mar 2026 10:00:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772445637; bh=KYeYSNaOiSRsuc5EvvU+T4wUhSzMG+L8k9xSmOuJGzM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sCy34/L0twFxXkUlcyqN7IciidLfbW9LkZnjcIsB/JFH/09+Bde3BCPoZddQ0IqgV p48lmzhJciO/JHTdrRAgKfylnk1lCeZ03ykhsQA61A/XzDe1mo+DJTh8osHHEbnjbd ke4+ANQcX/TPpEAWp9NGkrUUHM8yfZ3mJvidyXJPFlRd4ES5HfNGRsXqWU/Yx4xECA g1qNlR8Wk+Mj0Yz7stIuPi4sTPQQfHRA1p/9XcRaWmX5qyuV1dRQ1dTxYYf1yRqqYW p3cThK7CHRDBYQJR+wWCHFx5HUqdNNIkmz4yOfN0iifjx4pGRq1PJeFufnKFulm1Rj oXlms7G2FCtOA== 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 v3 7/9] PCI: endpoint: pci-epf-test: Advertise reserved BARs Date: Mon, 2 Mar 2026 10:59:19 +0100 Message-ID: <20260302095913.48155-18-cassel@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260302095913.48155-11-cassel@kernel.org> References: <20260302095913.48155-11-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=1976; i=cassel@kernel.org; h=from:subject; bh=KYeYSNaOiSRsuc5EvvU+T4wUhSzMG+L8k9xSmOuJGzM=; b=owGbwMvMwCV2MsVw8cxjvkWMp9WSGDKXxlcfFH+22Nx9of/s1IVzp8zb8y1reZJPye7yApa6E zmLdpxS7ShlYRDjYpAVU2Tx/eGyv7jbfcpxxTs2MHNYmUCGMHBxCsBEbk1iZJj4NcQuYTej84ui TydmzjON7ToheFWc447W2V0p802SMy8x/He4KSr7Y0dKBgfXH/lbE0wFJ8yNXuGiKHT//bxbxYW XG3gB 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