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| author |   Saheed O. Bolarinwa <refactormyself@gmail.com> | 2020-10-15 14:30:39 -0500 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2020-10-16 11:21:19 -0500 |
| commit | df8f10587d3d11b055d54138994a1a9a681da0c4 (patch) | |
| tree | b32c7e07fe1841fe53518e2ec46a3b8035ccc09f /include/uapi/linux | |
| parent | PCI/ASPM: Remove struct aspm_register_info.l1ss_cap (diff) | |
| download | linux-dev-df8f10587d3d11b055d54138994a1a9a681da0c4.tar.xz linux-dev-df8f10587d3d11b055d54138994a1a9a681da0c4.zip | |
PCI/ASPM: Remove struct pcie_link_state.l1ss
Previously we computed L1.2 parameters in the enumeration path, saved them
in struct pcie_link_state.l1ss, and programmed them into the devices
whenever we enabled or disabled L1.2 on the link. But these parameters are
constant and don't need to be updated when enabling/disabling L1.2.
Compute and program the L1.2 parameters once during enumeration and remove
the struct pcie_link_state.l1ss member. No functional change intended.
[bhelgaas: rework to program L1.2 parameters during enumeration]
Link: https://lore.kernel.org/r/20201015193039.12585-13-helgaas@kernel.org
Signed-off-by: Saheed O. Bolarinwa <refactormyself@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/pci_regs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h index 06846ec2e071..c7e0acba0e20 100644 --- a/include/uapi/linux/pci_regs.h +++ b/include/uapi/linux/pci_regs.h @@ -1058,6 +1058,7 @@ #define PCI_L1SS_CTL1_PCIPM_L1_1 0x00000002 /* PCI-PM L1.1 Enable */ #define PCI_L1SS_CTL1_ASPM_L1_2 0x00000004 /* ASPM L1.2 Enable */ #define PCI_L1SS_CTL1_ASPM_L1_1 0x00000008 /* ASPM L1.1 Enable */ +#define PCI_L1SS_CTL1_L1_2_MASK 0x00000005 #define PCI_L1SS_CTL1_L1SS_MASK 0x0000000f #define PCI_L1SS_CTL1_CM_RESTORE_TIME 0x0000ff00 /* Common_Mode_Restore_Time */ #define PCI_L1SS_CTL1_LTR_L12_TH_VALUE 0x03ff0000 /* LTR_L1.2_THRESHOLD_Value */ |