From: Rajat Jain Date: Tue, 3 Jan 2017 06:34:10 +0000 (-0800) Subject: PCI/ASPM: Add L1 substate capability structure register definitions X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0fc1223f0e77a748f7040562faaa7027f7db71ca;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git PCI/ASPM: Add L1 substate capability structure register definitions Add L1 substate capability structure register definitions for use in subsequent patches. See the PCIe r3.1 spec, sec 7.33. [bhelgaas: add PCIe spec reference] Signed-off-by: Rajat Jain Signed-off-by: Bjorn Helgaas --- diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h index 174d1147081b..f48d06e2bb4d 100644 --- a/include/uapi/linux/pci_regs.h +++ b/include/uapi/linux/pci_regs.h @@ -682,6 +682,7 @@ #define PCI_EXT_CAP_ID_PMUX 0x1A /* Protocol Multiplexing */ #define PCI_EXT_CAP_ID_PASID 0x1B /* Process Address Space ID */ #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_MAX PCI_EXT_CAP_ID_PTM @@ -985,4 +986,19 @@ #define PCI_PTM_CTRL_ENABLE 0x00000001 /* PTM enable */ #define PCI_PTM_CTRL_ROOT 0x00000002 /* Root select */ +/* L1 PM Substates */ +#define PCI_L1SS_CAP 4 /* capability register */ +#define PCI_L1SS_CAP_PCIPM_L1_2 1 /* PCI PM L1.2 Support */ +#define PCI_L1SS_CAP_PCIPM_L1_1 2 /* PCI PM L1.1 Support */ +#define PCI_L1SS_CAP_ASPM_L1_2 4 /* ASPM L1.2 Support */ +#define PCI_L1SS_CAP_ASPM_L1_1 8 /* ASPM L1.1 Support */ +#define PCI_L1SS_CAP_L1_PM_SS 16 /* L1 PM Substates Support */ +#define PCI_L1SS_CTL1 8 /* Control Register 1 */ +#define PCI_L1SS_CTL1_PCIPM_L1_2 1 /* PCI PM L1.2 Enable */ +#define PCI_L1SS_CTL1_PCIPM_L1_1 2 /* PCI PM L1.1 Support */ +#define PCI_L1SS_CTL1_ASPM_L1_2 4 /* ASPM L1.2 Support */ +#define PCI_L1SS_CTL1_ASPM_L1_1 8 /* ASPM L1.1 Support */ +#define PCI_L1SS_CTL1_L1SS_MASK 0x0000000F +#define PCI_L1SS_CTL2 0xC /* Control Register 2 */ + #endif /* LINUX_PCI_REGS_H */