linux-kernel - [PATCH kernel 3/4] pci: Define TEE-IO bit in PCIe device capabilities

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Message-ID: <20240201060228.3070928-4-aik@amd.com>
Date: Thu, 1 Feb 2024 17:02:27 +1100
From: Alexey Kardashevskiy <aik@....com>
To: <linux-pci@...r.kernel.org>
CC: <linux-kernel@...r.kernel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
	Jonathan Cameron <jonathan.cameron@...wei.com>, Lukas Wunner
	<lukas@...ner.de>, Alexey Kardashevskiy <aik@....com>
Subject: [PATCH kernel 3/4] pci: Define TEE-IO bit in PCIe device capabilities

A new bit #30 from the PCI Express Device Capabilities Register is defined
in PCIe 6.1 as "TEE Device Interface Security Protocol (TDISP)".

Define the macro.

Signed-off-by: Alexey Kardashevskiy <aik@....com>
---
 include/uapi/linux/pci_regs.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index b9c681f14181..e60b4df1f7d9 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -498,6 +498,7 @@
 #define  PCI_EXP_DEVCAP_PWR_VAL	0x03fc0000 /* Slot Power Limit Value */
 #define  PCI_EXP_DEVCAP_PWR_SCL	0x0c000000 /* Slot Power Limit Scale */
 #define  PCI_EXP_DEVCAP_FLR     0x10000000 /* Function Level Reset */
+#define  PCI_EXP_DEVCAP_TEE_IO  0x40000000 /* TEE-IO Supported (TDISP) */
 #define PCI_EXP_DEVCTL		0x08	/* Device Control */
 #define  PCI_EXP_DEVCTL_CERE	0x0001	/* Correctable Error Reporting En. */
 #define  PCI_EXP_DEVCTL_NFERE	0x0002	/* Non-Fatal Error Reporting Enable */
-- 
2.41.0