From: "David E. Box" <david.e.box@linux.intel.com> To: rjw@rjwysocki.net, lenb@kernel.org, bhelgaas@google.com, kbusch@kernel.org, axboe@fb.com, hch@lst.de, sagi@grimberg.me Cc: "David E. Box" <david.e.box@linux.intel.com>, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/2] Add support for StorageD3Enable _DSD property Date: Mon, 27 Apr 2020 17:32:12 -0700 [thread overview] Message-ID: <20200428003214.3764-1-david.e.box@linux.intel.com> (raw) NVMe storage power management during suspend-to-idle, particularly on laptops, has been inconsistent with some devices working with D3 while others must rely on NVMe APST in order for power savings to be realized. Currently the default is to use APST unless quirked to do otherwise. However newer platforms, like Intel Comet Lake systems, may require NVMe drives to use D3 in order for the PCIe ports to be properly power managed. To make it easier for drivers to choose, these platforms may supply a special "StorageD3Enable" _DSD property under the root port that the device is attached to. If supplied, the driver must use D3 in order for the platform to realize the deepest power savings in suspend-to-idle. The first patch adds the new _DSD GUID and fowards the property through the pci/acpi layer to the pci device. The second patch adds support for the property to the nvme driver. David E. Box (2): pci: Add ACPI StorageD3Enable _DSD support drivers/nvme: Add support for ACPI StorageD3Enable property drivers/acpi/property.c | 3 +++ drivers/nvme/host/pci.c | 7 ++++++ drivers/pci/pci-acpi.c | 47 +++++++++++++++++++++++++++++++++++++++++ drivers/pci/pci.c | 6 ++++++ drivers/pci/pci.h | 4 ++++ include/linux/pci.h | 1 + 6 files changed, 68 insertions(+) -- 2.20.1
WARNING: multiple messages have this Message-ID (diff)
From: "David E. Box" <david.e.box@linux.intel.com> To: rjw@rjwysocki.net, lenb@kernel.org, bhelgaas@google.com, kbusch@kernel.org, axboe@fb.com, hch@lst.de, sagi@grimberg.me Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, "David E. Box" <david.e.box@linux.intel.com>, linux-pci@vger.kernel.org Subject: [PATCH 0/2] Add support for StorageD3Enable _DSD property Date: Mon, 27 Apr 2020 17:32:12 -0700 [thread overview] Message-ID: <20200428003214.3764-1-david.e.box@linux.intel.com> (raw) NVMe storage power management during suspend-to-idle, particularly on laptops, has been inconsistent with some devices working with D3 while others must rely on NVMe APST in order for power savings to be realized. Currently the default is to use APST unless quirked to do otherwise. However newer platforms, like Intel Comet Lake systems, may require NVMe drives to use D3 in order for the PCIe ports to be properly power managed. To make it easier for drivers to choose, these platforms may supply a special "StorageD3Enable" _DSD property under the root port that the device is attached to. If supplied, the driver must use D3 in order for the platform to realize the deepest power savings in suspend-to-idle. The first patch adds the new _DSD GUID and fowards the property through the pci/acpi layer to the pci device. The second patch adds support for the property to the nvme driver. David E. Box (2): pci: Add ACPI StorageD3Enable _DSD support drivers/nvme: Add support for ACPI StorageD3Enable property drivers/acpi/property.c | 3 +++ drivers/nvme/host/pci.c | 7 ++++++ drivers/pci/pci-acpi.c | 47 +++++++++++++++++++++++++++++++++++++++++ drivers/pci/pci.c | 6 ++++++ drivers/pci/pci.h | 4 ++++ include/linux/pci.h | 1 + 6 files changed, 68 insertions(+) -- 2.20.1 _______________________________________________ linux-nvme mailing list linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme
next reply other threads:[~2020-04-28 0:32 UTC|newest] Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-04-28 0:32 David E. Box [this message] 2020-04-28 0:32 ` [PATCH 0/2] Add support for StorageD3Enable _DSD property David E. Box 2020-04-28 0:32 ` [PATCH 1/2] pci: Add ACPI StorageD3Enable _DSD support David E. Box 2020-04-28 0:32 ` David E. Box 2020-05-18 12:34 ` Rafael J. Wysocki 2020-05-18 12:34 ` Rafael J. Wysocki 2020-05-19 17:10 ` David E. Box 2020-05-19 17:10 ` David E. Box 2020-04-28 0:32 ` [PATCH 2/2] drivers/nvme: Add support for ACPI StorageD3Enable property David E. Box 2020-04-28 0:32 ` David E. Box 2020-04-28 5:13 ` [PATCH 0/2] Add support for StorageD3Enable _DSD property Christoph Hellwig 2020-04-28 5:13 ` Christoph Hellwig 2020-04-28 14:09 ` David E. Box 2020-04-28 14:09 ` David E. Box 2020-04-28 14:22 ` Christoph Hellwig 2020-04-28 14:22 ` Christoph Hellwig 2020-04-28 15:27 ` David E. Box 2020-04-28 15:27 ` David E. Box 2020-04-29 5:20 ` Williams, Dan J 2020-04-29 5:20 ` Williams, Dan J 2020-04-29 15:10 ` Keith Busch 2020-04-29 15:10 ` Keith Busch 2020-04-29 16:11 ` David E. Box 2020-04-29 16:11 ` David E. Box 2020-05-01 13:12 ` hch 2020-05-01 13:12 ` hch 2020-05-01 15:54 ` David E. Box 2020-05-01 15:54 ` David E. Box 2020-05-01 13:10 ` hch 2020-05-01 13:10 ` hch 2020-05-18 13:51 ` David Woodhouse 2020-05-18 13:51 ` David Woodhouse 2020-05-18 17:20 ` Dan Williams 2020-05-18 17:20 ` Dan Williams 2020-06-12 20:48 ` [PATCH V2 0/2] nvme: Add support for ACPI StorageD3Enable property David E. Box 2020-06-12 20:48 ` David E. Box 2020-06-24 18:55 ` David E. Box 2020-06-24 18:55 ` David E. Box 2020-06-24 19:10 ` Dan Williams 2020-06-24 19:10 ` Dan Williams 2020-06-24 19:39 ` David E. Box 2020-06-24 19:39 ` David E. Box 2020-07-02 21:04 ` [PATCH v3] drivers/nvme: " David E. Box 2020-07-02 22:50 ` [PATCH v4] " David E. Box 2020-07-02 22:50 ` David E. Box 2020-07-03 7:18 ` kernel test robot 2020-07-03 7:18 ` kernel test robot 2020-07-06 14:57 ` Rafael J. Wysocki 2020-07-06 14:57 ` Rafael J. Wysocki 2020-07-07 21:24 ` David E. Box 2020-07-07 21:24 ` David E. Box 2020-07-07 7:09 ` Christoph Hellwig 2020-07-07 7:09 ` Christoph Hellwig 2020-07-09 18:43 ` [PATCH V5] " David E. Box 2020-07-09 18:43 ` David E. Box 2020-07-13 11:12 ` Rafael J. Wysocki 2020-07-13 11:12 ` Rafael J. Wysocki 2020-07-16 14:39 ` Christoph Hellwig 2020-07-16 14:39 ` Christoph Hellwig 2021-05-26 19:25 ` Raul E Rangel 2021-05-26 19:25 ` Raul E Rangel 2020-06-12 20:48 ` [PATCH V2 1/2] PCI: Add ACPI StorageD3Enable _DSD support David E. Box 2020-06-12 20:48 ` David E. Box 2020-06-24 21:15 ` Bjorn Helgaas 2020-06-24 21:15 ` Bjorn Helgaas 2020-06-25 11:30 ` Rafael J. Wysocki 2020-06-25 11:30 ` Rafael J. Wysocki 2020-06-25 12:16 ` Mika Westerberg 2020-06-25 12:16 ` Mika Westerberg 2020-06-25 17:07 ` David E. Box 2020-06-25 17:30 ` Bjorn Helgaas 2020-06-25 17:30 ` Bjorn Helgaas 2020-06-24 21:37 ` Bjorn Helgaas 2020-06-24 21:37 ` Bjorn Helgaas 2020-06-24 22:09 ` David E. Box 2020-06-24 22:09 ` David E. Box 2020-06-12 20:48 ` [PATCH V2 2/2] drivers/nvme: Add support for ACPI StorageD3Enable property David E. Box 2020-06-12 20:48 ` David E. Box
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