[PATCH 04/18] PCI: Add PCI_EXP_SLTCAP_*_SHIFT macros

Marek Behún
2022-02-20T19:34:04Z

From: Pali Rohár <pali@kernel.org>

These macros allows to easily compose and extract Slot Power Limit and
Physical Slot Number values from Slot Capability Register.

Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Marek Behún <kabel@kernel.org>
---
include/uapi/linux/pci_regs.h | 3 +++
1 file changed, 3 insertions(+)

diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index bee1a9ed6e66..d825e17e448c 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -591,10 +591,13 @@
#define PCI_EXP_SLTCAP_HPS 0x00000020 /* Hot-Plug Surprise */
#define PCI_EXP_SLTCAP_HPC 0x00000040 /* Hot-Plug Capable */
#define PCI_EXP_SLTCAP_SPLV 0x00007f80 /* Slot Power Limit Value */
+#define PCI_EXP_SLTCAP_SPLV_SHIFT 7 /* Slot Power Limit Value shift */
#define PCI_EXP_SLTCAP_SPLS 0x00018000 /* Slot Power Limit Scale */
+#define PCI_EXP_SLTCAP_SPLS_SHIFT 15 /* Slot Power Limit Scale shift */
#define PCI_EXP_SLTCAP_EIP 0x00020000 /* Electromechanical Interlock Present */
#define PCI_EXP_SLTCAP_NCCS 0x00040000 /* No Command Completed Support */
#define PCI_EXP_SLTCAP_PSN 0xfff80000 /* Physical Slot Number */
+#define PCI_EXP_SLTCAP_PSN_SHIFT 19 /* Physical Slot Number shift */
#define PCI_EXP_SLTCTL 0x18 /* Slot Control */
#define PCI_EXP_SLTCTL_ABPE 0x0001 /* Attention Button Pressed Enable */
#define PCI_EXP_SLTCTL_PFDE 0x0002 /* Power Fault Detected Enable */
--
2.34.1