git: 56cdca658ce7 - stable/15 - pci: Add L1 PM definitions

The branch stable/15 has been updated by kbowling:

URL: https://cgit.FreeBSD.org/src/commit/?id=56cdca658ce721c4651c91bd5dbe5fd6243769a1

commit 56cdca658ce721c4651c91bd5dbe5fd6243769a1
Author:     Michael Adler <madler@tapil.com>
AuthorDate: 2026-07-09 17:00:32 +0000
Commit:     Kevin Bowling <kbowling@FreeBSD.org>
CommitDate: 2026-08-08 00:33:28 +0000

    pci: Add L1 PM definitions
    
    Add register/bit definitions for the L1 PM substates capability
    (PCIZ_L1PM) to pcireg.h.
    
    Signed-off-by: Michael Adler <madler@tapil.com>
    
    Pull-Request:   https://github.com/freebsd/freebsd-src/pull/2318
    
    (cherry picked from commit 04f8a6aeeba5cbaa48be7134765ee49d5b1b9857)
---
 sys/dev/pci/pcireg.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/sys/dev/pci/pcireg.h b/sys/dev/pci/pcireg.h
index f6aaf30611e4..9a48e9183201 100644
--- a/sys/dev/pci/pcireg.h
+++ b/sys/dev/pci/pcireg.h
@@ -1128,6 +1128,20 @@
 #define	PCIM_ACS_UNCLAIMED_REQ_REDIRECT_CTL	0x1000
 #define	PCIR_ACS_EGRESS_CONTROL_VECTOR	0x8
 
+/* L1 PM Substates definitions */
+#define	PCIR_L1PM_CAP		0x04
+#define	PCIM_L1PM_CAP_PCIPM_L1_2	0x00000001
+#define	PCIM_L1PM_CAP_PCIPM_L1_1	0x00000002
+#define	PCIM_L1PM_CAP_ASPM_L1_2		0x00000004
+#define	PCIM_L1PM_CAP_ASPM_L1_1		0x00000008
+#define	PCIM_L1PM_CAP_L1PM_SUBSTATES	0x00000010
+#define	PCIR_L1PM_CTL1		0x08
+#define	PCIM_L1PM_CTL1_PCIPM_L1_2	0x00000001
+#define	PCIM_L1PM_CTL1_PCIPM_L1_1	0x00000002
+#define	PCIM_L1PM_CTL1_ASPM_L1_2	0x00000004
+#define	PCIM_L1PM_CTL1_ASPM_L1_1	0x00000008
+#define	PCIR_L1PM_CTL2		0x0c
+
 /*
  * AMD IOMMU Base Capability
  * From AMD I/O Virtualization Technology (IOMMU) Specification