From: Harry Song <jundongsong1@gmail.com>
To: bhelgaas@google.com
Cc: linux-pci@vger.kernel.org, jundongsong1@gmail.com
Subject: [PATCH] PCI/RTR: Add RTR capability structure register definitions
Date: Sun, 26 Nov 2023 15:14:20 +0800 [thread overview]
Message-ID: <20231126071420.4207-1-jundongsong1@gmail.com> (raw)
Add RTR(Readiness Time Reporting) capability structure register
definitions for use in subsequent patches.
See the PCIe r3.1 spec, sec 7.35.
Signed-off-by: Harry Song <jundongsong1@gmail.com>
---
include/uapi/linux/pci_regs.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 85ab12788..47db4915b 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -734,6 +734,7 @@
#define PCI_EXT_CAP_ID_DPC 0x1D /* Downstream Port Containment */
#define PCI_EXT_CAP_ID_L1SS 0x1E /* L1 PM Substates */
#define PCI_EXT_CAP_ID_PTM 0x1F /* Precision Time Measurement */
+#define PCI_EXT_CAP_ID_RTR 0x22 /* Readiness Time Reporting */
#define PCI_EXT_CAP_ID_DVSEC 0x23 /* Designated Vendor-Specific */
#define PCI_EXT_CAP_ID_DLF 0x25 /* Data Link Feature */
#define PCI_EXT_CAP_ID_PL_16GT 0x26 /* Physical Layer 16.0 GT/s */
@@ -1065,6 +1066,14 @@
#define PCI_PTM_CTRL_ENABLE 0x00000001 /* PTM enable */
#define PCI_PTM_CTRL_ROOT 0x00000002 /* Root select */
+/* Readiness Time Reporting */
+#define PCI_RTR_CAP 0x04 /* RTR Capability */
+#define PCI_RTR_RST_TIME_MASK 0xFFF /* RTR Reset Time Mask */
+#define PCI_RTR_DLUP_TIME_MASK 0xFFF000 /* RTR Downstream Link UP Time Mask */
+#define PCI_RTR_CAP2 0x08 /* RTR Capability 2 */
+#define PCI_RTR_FLR_TIME_MASK 0xFFF /* RTR Function Level Reset Time Mask */
+#define PCI_RTR_D3_TO_D0_TIME_MASK 0xFFF000 /* RTR D3-hot To D0 Time Mask */
+
/* ASPM L1 PM Substates */
#define PCI_L1SS_CAP 0x04 /* Capabilities Register */
#define PCI_L1SS_CAP_PCIPM_L1_2 0x00000001 /* PCI-PM L1.2 Supported */
--
2.17.1
next reply other threads:[~2023-11-26 7:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-26 7:14 Harry Song [this message]
2023-11-27 18:07 ` [PATCH] PCI/RTR: Add RTR capability structure register definitions Ashok Raj
2023-11-29 23:05 ` Bjorn Helgaas
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