| Message ID | cover.1643822289.git.stuart.w.hayes@gmail.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Add PCIe enclosure management support | expand |
On Wed, 2 Feb 2022 11:59:10 -0600 Stuart Hayes <stuart.w.hayes@gmail.com> wrote: > (3) Modifies the nvme driver to create an auxiliary device to which > the pcie_em driver can attach. > > These patches do not modify the cxl or pcieport drivers to add > support, though the driver was designed to make it easy to do so. Hi Stuart, I would like to help you with NPEM testing. Currently I have setup with NPEM enabled in Downstream port. It will require to add support for pcieport. Could you add it in next version? I'm also searching for a drive with NPEM to do full validation (when both Downstream and the SSD are reporting capability). If you can point me the model, it will be helpful. Thanks, Mariusz
This patch set adds support for two PCIe enclosure management methods, "Native PCIe Enclosure Management" (defined in the PCI Express Base Spec) and "_DSM Definitions for PCIe SSD Status LED" (defined in the PCI Firmware Spec). The latter is very similar to the former, but uses a _DSM interface (which can be provided by firmware) rather than a PCIe extended capability. Each provides a way to control up to ten indicator states (such as locate, fault, etc.) There are three patches in the set: (1) Expands the existing enclosure driver to support more indicators. (2) Adds an auxiliary driver "pcie_em" that can attach to auxiliary devices created by the drivers of any devices that can support PCIe enclosure management (nvme, pcieport, and cxl). It will register an enclosure device with one component for each device with an enclosure management interface. (3) Modifies the nvme driver to create an auxiliary device to which the pcie_em driver can attach. These patches do not modify the cxl or pcieport drivers to add support, though the driver was designed to make it easy to do so. --- v2: fixed compile error related to switch default in enclosure.c added documentation of added sysfs attributes --- Stuart Hayes (3): Add support for seven more indicators in enclosure driver Add PCIe enclosure management auxiliary driver Register auxiliary device for PCIe enclosure management .../ABI/testing/sysfs-class-enclosure | 14 + drivers/misc/enclosure.c | 191 ++++--- drivers/nvme/host/pci.c | 11 + drivers/pci/pcie/Kconfig | 8 + drivers/pci/pcie/Makefile | 1 + drivers/pci/pcie/pcie_em.c | 473 ++++++++++++++++++ include/linux/enclosure.h | 22 + include/linux/pcie_em.h | 97 ++++ include/uapi/linux/pci_regs.h | 11 +- 9 files changed, 749 insertions(+), 79 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-class-enclosure create mode 100644 drivers/pci/pcie/pcie_em.c create mode 100644 include/linux/pcie_em.h