linux-kernel - [PATCH 1/3] PCI: Add PCIE_SPEED2LNKCTL2_TLS

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250519163156.217567-2-18255117159@163.com>
Date: Tue, 20 May 2025 00:31:54 +0800
From: Hans Zhang <18255117159@....com>
To: bhelgaas@...gle.com,
	lpieralisi@...nel.org,
	kw@...ux.com,
	krzk+dt@...nel.org,
	manivannan.sadhasivam@...aro.org,
	ilpo.jarvinen@...ux.intel.com,
	jingoohan1@...il.com
Cc: robh@...nel.org,
	linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Hans Zhang <18255117159@....com>
Subject: [PATCH 1/3] PCI: Add PCIE_SPEED2LNKCTL2_TLS_ENC conversion macro

Introduce PCIE_SPEED2LNKCTL2_TLS_ENC macro to standardize the conversion
between PCIe speed enumerations and LNKCTL2_TLS register values. This
centralizes speed-to-register mapping logic, eliminating duplicated
conversion code across multiple drivers.

Signed-off-by: Hans Zhang <18255117159@....com>
---
 drivers/pci/pci.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index f92928dadc6a..b7e2d08825c6 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -415,6 +415,15 @@ void pci_bus_put(struct pci_bus *bus);
 	 (lnkctl2) == PCI_EXP_LNKCTL2_TLS_2_5GT ? PCIE_SPEED_2_5GT : \
 	 PCI_SPEED_UNKNOWN)
 
+#define PCIE_SPEED2LNKCTL2_TLS_ENC(speed) \
+	((speed) == PCIE_SPEED_2_5GT ? PCI_EXP_LNKCTL2_TLS_2_5GT : \
+	 (speed) == PCIE_SPEED_5_0GT ? PCI_EXP_LNKCTL2_TLS_5_0GT : \
+	 (speed) == PCIE_SPEED_8_0GT ? PCI_EXP_LNKCTL2_TLS_8_0GT : \
+	 (speed) == PCIE_SPEED_16_0GT ? PCI_EXP_LNKCTL2_TLS_16_0GT : \
+	 (speed) == PCIE_SPEED_32_0GT ? PCI_EXP_LNKCTL2_TLS_32_0GT : \
+	 (speed) == PCIE_SPEED_64_0GT ? PCI_EXP_LNKCTL2_TLS_64_0GT : \
+	 0)
+
 /* PCIe speed to Mb/s reduced by encoding overhead */
 #define PCIE_SPEED2MBS_ENC(speed) \
 	((speed) == PCIE_SPEED_64_0GT ? 64000*1/1 : \
-- 
2.25.1