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 142FB3E8C5D for ; Wed, 25 Feb 2026 17:04:28 +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=1772039068; cv=none; b=JkpwC4KxbzkCpBhBnJ/jJdNkpk0twLcyr/hplOp/LyENnVzYd/dqRIv1ffY9k3eHSHywByZ/hnAR72taNj1eAAE+rd/MTNedD4Montm70SnxF8Av0/IDtqxLhwiLNilL9p3qdG35QFACQ9KOV/lK87h7hERaR5MXW/LtOpz3iqk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772039068; c=relaxed/simple; bh=jIZhB2fBVtJtFnGVNOkjs166cBmC7x78JzvJfyKZNTc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Lks6pMsYP8J64wU/7sakn34RWjzH8t3P3atLFVNM5uNGilHfG6SIrkbvo3CCXdyHpLWAou/7ndlPfkpV3G8uYpYTSQUyp8NA5/IcHwZaZt8cGbkn9cTARO9BdamNjjd7s5ejqg30WQV+Y9MjgKZZiAXyjMpczLRSlDD5AQQa5XY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Gamphg9/; 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="Gamphg9/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 021AFC116D0; Wed, 25 Feb 2026 17:04:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772039067; bh=jIZhB2fBVtJtFnGVNOkjs166cBmC7x78JzvJfyKZNTc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Gamphg9/9fMffPjU2swXfPu647SCAVKtXxrug/msServRRB2u703VP++UeRpr+joV +T71VlBpB+oI3SMOHSEILtQRwY8ZVL96diLBWIbM74c+z5X5S2oJrNbVQKERjJJsfn mun3Vb8zVYgq7Pac2xLOVbGt2QmOEoWBZ6rHbIIFiMdQYnEFakG6aPlEjpfOS3z2KE Wwzh4PD1zfoalfKlCJmAT9DN7Z9OA86hv8UQ1KMqiph5yAPPvJV5IqfNglOXiruB9l eOHLPcU4zyOPQjsfmiGU/RyhuJFHZTFoZQdXHpsjdCuoZtGzYzNjgYy7Ps6VujB0b1 kMBnYuxpSpexA== 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 , linux-pci@vger.kernel.org Subject: [PATCH v2 7/9] PCI: endpoint: pci-epf-test: Advertise reserved BARs Date: Wed, 25 Feb 2026 18:03:30 +0100 Message-ID: <20260225170324.4033466-18-cassel@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260225170324.4033466-11-cassel@kernel.org> References: <20260225170324.4033466-11-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=1889; i=cassel@kernel.org; h=from:subject; bh=jIZhB2fBVtJtFnGVNOkjs166cBmC7x78JzvJfyKZNTc=; b=kA0DAAoWyWQxo5nGTXIByyZiAGmfK2Wi3Bu0VtHYV1vXAUfpzWdxExmGiQdQyNPMLC2cGZy5f Ih1BAAWCgAdFiEETfhEv3OLR5THIdw8yWQxo5nGTXIFAmmfK2UACgkQyWQxo5nGTXLJnQD/cJ+i TONvWa6o49ScIa9YcUCrkdjuv7TLFdDNQd1pWyIBAJXrzPVGmPK/kCg8YGhOwJN7bmTlKynTBzL zh9ctWrwJ 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 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