diff options
Diffstat (limited to 'pkgs/patches-linux-5.15/0029-PCI-mvebu-Add-support-for-PCI-Bridge-Subsystem-Vendo.patch')
| -rw-r--r-- | pkgs/patches-linux-5.15/0029-PCI-mvebu-Add-support-for-PCI-Bridge-Subsystem-Vendo.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/pkgs/patches-linux-5.15/0029-PCI-mvebu-Add-support-for-PCI-Bridge-Subsystem-Vendo.patch b/pkgs/patches-linux-5.15/0029-PCI-mvebu-Add-support-for-PCI-Bridge-Subsystem-Vendo.patch new file mode 100644 index 0000000..7f26476 --- /dev/null +++ b/pkgs/patches-linux-5.15/0029-PCI-mvebu-Add-support-for-PCI-Bridge-Subsystem-Vendo.patch @@ -0,0 +1,53 @@ +From 1192a8856544109e30555ca15aed7353297bae79 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> +Date: Fri, 8 Oct 2021 11:47:35 +0200 +Subject: [PATCH 29/90] PCI: mvebu: Add support for PCI Bridge Subsystem Vendor + ID on emulated bridge +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Register with Subsystem Device/Vendor ID is at offset 0x2c. Export is via +emulated bridge. + +After this change Subsystem ID is visible in lspci output at line: + + Capabilities: [40] Subsystem + +Signed-off-by: Pali Rohár <pali@kernel.org> +--- + drivers/pci/controller/pci-mvebu.c | 4 ++++ + 1 file changed, 4 insertions(+) + +diff --git a/drivers/pci/controller/pci-mvebu.c b/drivers/pci/controller/pci-mvebu.c +index 0f2ec0a17874..811af9e6ede5 100644 +--- a/drivers/pci/controller/pci-mvebu.c ++++ b/drivers/pci/controller/pci-mvebu.c +@@ -32,6 +32,7 @@ + #define PCIE_DEV_REV_OFF 0x0008 + #define PCIE_BAR_LO_OFF(n) (0x0010 + ((n) << 3)) + #define PCIE_BAR_HI_OFF(n) (0x0014 + ((n) << 3)) ++#define PCIE_SSDEV_ID_OFF 0x002c + #define PCIE_CAP_PCIEXP 0x0060 + #define PCIE_HEADER_LOG_4_OFF 0x0128 + #define PCIE_BAR_CTRL_OFF(n) (0x1804 + (((n) - 1) * 4)) +@@ -731,6 +732,7 @@ static int mvebu_pci_bridge_emul_init(struct mvebu_pcie_port *port) + struct pci_bridge_emul *bridge = &port->bridge; + u32 dev_id = mvebu_readl(port, PCIE_DEV_ID_OFF); + u32 dev_rev = mvebu_readl(port, PCIE_DEV_REV_OFF); ++ u32 ssdev_id = mvebu_readl(port, PCIE_SSDEV_ID_OFF); + u32 pcie_cap = mvebu_readl(port, PCIE_CAP_PCIEXP); + u8 pcie_cap_ver = ((pcie_cap >> 16) & PCI_EXP_FLAGS_VERS); + +@@ -752,6 +754,8 @@ static int mvebu_pci_bridge_emul_init(struct mvebu_pcie_port *port) + */ + bridge->pcie_conf.cap = cpu_to_le16(pcie_cap_ver); + ++ bridge->subsystem_vendor_id = ssdev_id & 0xffff; ++ bridge->subsystem_id = ssdev_id >> 16; + bridge->has_pcie = true; + bridge->data = port; + bridge->ops = &mvebu_pci_bridge_emul_ops; +-- +2.34.1 + |