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From: Manikanta Maddireddy <mmaddireddy@nvidia.com>
To: <bhelgaas@google.com>, <lpieralisi@kernel.org>,
	<kwilczynski@kernel.org>, <mani@kernel.org>, <robh@kernel.org>,
	<krzk+dt@kernel.org>, <conor+dt@kernel.org>,
	<thierry.reding@gmail.com>, <jonathanh@nvidia.com>,
	<kishon@kernel.org>, <arnd@arndb.de>,
	<gregkh@linuxfoundation.org>, <Frank.Li@nxp.com>,
	<den@valinux.co.jp>, <hongxing.zhu@nxp.com>,
	<jingoohan1@gmail.com>, <vidyas@nvidia.com>, <cassel@kernel.org>,
	<18255117159@163.com>
Cc: <linux-pci@vger.kernel.org>, <linux-tegra@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>,
	Manikanta Maddireddy <mmaddireddy@nvidia.com>
Subject: [PATCH v2 1/5] PCI: endpoint: Add reserved region type for MSI-X Table and PBA
Date: Tue, 3 Mar 2026 12:50:00 +0530	[thread overview]
Message-ID: <20260303072004.2384079-2-mmaddireddy@nvidia.com> (raw)
In-Reply-To: <20260303072004.2384079-1-mmaddireddy@nvidia.com>

Add PCI_EPC_BAR_RSVD_MSIX_TBL_RAM and PCI_EPC_BAR_RSVD_MSIX_PBA_RAM to
enum pci_epc_bar_rsvd_region_type so that Endpoint controllers can
describe hardware-owned MSI-X Table and PBA (Pending Bit Array) regions
behind a BAR_RESERVED BAR.

Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
---
v2: Split MSI-X pci_epc_bar_rsvd_region_type for both MSI-X table and PBA

 include/linux/pci-epc.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/linux/pci-epc.h b/include/linux/pci-epc.h
index c181c6d107b7..fb3f34829d2b 100644
--- a/include/linux/pci-epc.h
+++ b/include/linux/pci-epc.h
@@ -214,6 +214,8 @@ enum pci_epc_bar_type {
 /**
  * enum pci_epc_bar_rsvd_region_type - type of a fixed subregion behind a BAR
  * @PCI_EPC_BAR_RSVD_DMA_CTRL_MMIO: Integrated DMA controller MMIO window
+ * @PCI_EPC_BAR_RSVD_MSIX_TBL_RAM: MSI-X table structure
+ * @PCI_EPC_BAR_RSVD_MSIX_PBA_RAM: MSI-X PBA structures
  *
  * BARs marked BAR_RESERVED are owned by the SoC/EPC hardware and must not be
  * reprogrammed by EPF drivers. Some of them still expose fixed subregions that
@@ -221,6 +223,8 @@ enum pci_epc_bar_type {
  */
 enum pci_epc_bar_rsvd_region_type {
 	PCI_EPC_BAR_RSVD_DMA_CTRL_MMIO = 0,
+	PCI_EPC_BAR_RSVD_MSIX_TBL_RAM,
+	PCI_EPC_BAR_RSVD_MSIX_PBA_RAM,
 };
 
 /**
-- 
2.34.1


  reply	other threads:[~2026-03-03  7:20 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-03  7:19 [PATCH v2 0/5] PCI: endpoint: Add Tegra194/234 BAR layout and pci_endpoint_test support Manikanta Maddireddy
2026-03-03  7:20 ` Manikanta Maddireddy [this message]
2026-03-03 13:46   ` [PATCH v2 1/5] PCI: endpoint: Add reserved region type for MSI-X Table and PBA Niklas Cassel
2026-03-03  7:20 ` [PATCH v2 2/5] PCI: endpoint: Allow only_64bit on BAR_RESERVED Manikanta Maddireddy
2026-03-03 13:46   ` Niklas Cassel
2026-03-03  7:20 ` [PATCH v2 3/5] PCI: tegra194: Make BAR0 programmable and remove 1MB size limit Manikanta Maddireddy
2026-03-03 13:48   ` Niklas Cassel
2026-03-03  7:20 ` [PATCH v2 4/5] PCI: tegra194: Expose BAR2 (MSI-X) and BAR4 (DMA) as 64-bit BAR_RESERVED Manikanta Maddireddy
2026-03-03 13:51   ` Niklas Cassel
2026-03-03  7:20 ` [PATCH v2 5/5] misc: pci_endpoint_test: Add Tegra194 and Tegra234 device table entries Manikanta Maddireddy
2026-03-03 13:49   ` Niklas Cassel
2026-03-21 12:32 ` [PATCH v2 0/5] PCI: endpoint: Add Tegra194/234 BAR layout and pci_endpoint_test support Manivannan Sadhasivam

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