- 10 12月, 2008 1 次提交
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由 Thomas Renninger 提交于
Makes a Compaq 6735s boot reliably again. It used to hang in the loop on some boots. Give the link one second to train, otherwise break out of the loop and reset the previously set clock bits. Cc: stable@vger.kernel.org Signed-off-by: NThomas Renninger <trenn@suse.de> Signed-off-by: NShaohua Li <shaohua.li@intel.com> Signed-off-by: NMatthew Garrett <mjg59@srcf.ucam.org> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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- 21 10月, 2008 1 次提交
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由 Vincent Legoll 提交于
This patch uniformizes PCI probing debug boot messages with dev_printk() intead of manual printk() It changes adress range output from [%llx, %llx] to [%#llx-%#llx], like in pci_request_region(). For example, it goes from the mixed-style: PCI: 0000:00:1b.0 reg 10 64bit mmio: [f4280000, f4283fff] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold to uniform: pci 0000:00:1b.0: reg 10 64bit mmio: [0xf4280000-0xf4283fff] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold This patch has been runtime tested, boot log messages diffed, everything looks OK. Acked-by: NBjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: NVincent Legoll <vincent.legoll@gmail.com> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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- 17 9月, 2008 1 次提交
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由 Sitsofe Wheeler 提交于
pcie_aspm=force did not work because aspm_force was being double negated leading to the sanity check failing. Moving a bracket should fix this. Acked-by: NAlan Cox <alan@redhat.com> Signed-off-by: NSitsofe Wheeler <sitsofe@yahoo.com> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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- 29 7月, 2008 3 次提交
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由 Shaohua Li 提交于
A new option, pcie_aspm=force, will force ASPM to be enabled, even on system with PCIe 1.0 devices. Signed-off-by: NShaohua Li <shaohua.li@intel.com> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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由 Shaohua Li 提交于
Disable ASPM on pre-1.1 PCIe devices, as many of them don't implement it correctly. Tested-by: NJack Howarth <howarth@bromo.msbb.uc.edu> Signed-off-by: NShaohua Li <shaohua.li@intel.com> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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由 Shaohua Li 提交于
The ACPI FADT table includes an ASPM control bit. If the bit is set, do not enable ASPM since it may indicate that the platform doesn't actually support the feature. Tested-by: NJack Howarth <howarth@bromo.msbb.uc.edu> Signed-off-by: NShaohua Li <shaohua.li@intel.com> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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- 22 5月, 2008 1 次提交
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由 Shaohua Li 提交于
The Slot 03:00.* of JMicron controller has two functions, but one is PCIE endpoint the other isn't PCIE device, very strange. PCIE spec defines all functions should have the same config for ASPM, so disable ASPM for the whole slot in this case. Signed-off-by: NShaohua Li <shaohua.li@intel.com> Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
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- 21 4月, 2008 1 次提交
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由 Shaohua Li 提交于
PCI Express ASPM defines a protocol for PCI Express components in the D0 state to reduce Link power by placing their Links into a low power state and instructing the other end of the Link to do likewise. This capability allows hardware-autonomous, dynamic Link power reduction beyond what is achievable by software-only controlled power management. However, The device should be configured by software appropriately. Enabling ASPM will save power, but will introduce device latency. This patch adds ASPM support in Linux. It introduces a global policy for ASPM, a sysfs file /sys/module/pcie_aspm/parameters/policy can control it. The interface can be used as a boot option too. Currently we have below setting: -default, BIOS default setting -powersave, highest power saving mode, enable all available ASPM state and clock power management -performance, highest performance, disable ASPM and clock power management By default, the 'default' policy is used currently. In my test, power difference between powersave mode and performance mode is about 1.3w in a system with 3 PCIE links. Note: some devices might not work well with aspm, either because chipset issue or device issue. The patch provide API (pci_disable_link_state), driver can disable ASPM for specific device. Signed-off-by: NShaohua Li <shaohua.li@intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 03 2月, 2008 1 次提交
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由 Greg Kroah-Hartman 提交于
This reverts commit 6c723d5b. It caused build errors on non-x86 platforms, config file confusion, and even some boot errors on some x86-64 boxes. All around, not quite ready for prime-time :( Cc: Shaohua Li <shaohua.li@intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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- 02 2月, 2008 1 次提交
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由 Shaohua Li 提交于
PCI Express ASPM defines a protocol for PCI Express components in the D0 state to reduce Link power by placing their Links into a low power state and instructing the other end of the Link to do likewise. This capability allows hardware-autonomous, dynamic Link power reduction beyond what is achievable by software-only controlled power management. However, The device should be configured by software appropriately. Enabling ASPM will save power, but will introduce device latency. This patch adds ASPM support in Linux. It introduces a global policy for ASPM, a sysfs file /sys/module/pcie_aspm/parameters/policy can control it. The interface can be used as a boot option too. Currently we have below setting: -default, BIOS default setting -powersave, highest power saving mode, enable all available ASPM state and clock power management -performance, highest performance, disable ASPM and clock power management By default, the 'default' policy is used currently. In my test, power difference between powersave mode and performance mode is about 1.3w in a system with 3 PCIE links. Signed-off-by: NShaohua Li <shaohua.li@intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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