linux-dev/drivers/platform/x86/mlx-platform.c, branch linus/master

platform/x86: mlx-platform: Add support for new system SGN2410

2021-10-27T14:29:03Z

Add support for new system type, which is a water-cooling flavor of the VMOD001 system class, equipped with 48xSFP28 and 8xQSFP28 100G Ethernet ports. System is recognized by "DMI_BOARD_NAME" and " DMI_PRODUCT_SKU" matches, when these fields are set respectively to "VMOD001" and "HI138". Signed-off-by: Vadim Pasternak Reviewed-by: Oleksandr Shamray Link: https://lore.kernel.org/r/20211023094022.4193813-4-vadimp@nvidia.com Signed-off-by: Hans de Goede

platform/x86: mlx-platform: Add BIOS attributes for CoffeeLake COMEx based systems

2021-10-27T14:29:03Z

Extend systems of class VMOD0010 equipped with CoffeeLake COMEx module with BIOS related attributes to represent various BIOS statuses. These attributes "bios_active_image", "bios_auth_fail", "bios_upgrade_fail", "bios_safe_mode" has been already added to modular system. This all of them are already documented. - "bios_active_image" - location of current active BIOS image (0: Top, 1: Bottom. The reported value should correspond to value expected by OS in case of BIOS safe mode is 0. This bit is related to Intel top-swap feature of DualBios on the same flash. - "bios_auth_fail": BIOS upgrade is failed because provided BIOS image is not signed correctly. - "bios_upgrade_fail" BIOS upgrade is failed by some reason not related to authentication. For example, due to physical SPI flash problem. - "bios_safe_mod": - 0 : if BIOS is booted from a supposed active image; 1 : BIOS safe mechanism was enforced by hardware (CPLD). Signed-off-by: Vadim Pasternak Reviewed-by: Oleksandr Shamray Link: https://lore.kernel.org/r/20211023094022.4193813-3-vadimp@nvidia.com Signed-off-by: Hans de Goede

platform/x86: mlx-platform: Extend FAN and LED configuration to support new MQM97xx systems

2021-10-27T14:29:03Z

Add support for new system types "MQM97xx", which is based on Mellanox Quantum-2 ASIC. It provides up to 64x400GB/s (IB) full bidirectional bandwidth per port using PAM-4 modulation. The system support 32 OSFP cages that can provide 64x400GB/s per port (two ports/cage). The system fits standard 1U racks. System is equipped with seven fan drawers and with per fan drawer LED on backport panel and uses two-bytes for exposing CPLD Part Number versions. System is recognized by "DMI_BOARD_NAME" match, when this field is set to "VMOD0010". Signed-off-by: Vadim Pasternak Reviewed-by: Oleksandr Shamray Link: https://lore.kernel.org/r/20211023094022.4193813-2-vadimp@nvidia.com Signed-off-by: Hans de Goede

platform/x86: mlx-platform: Add support for multiply cooling devices

2021-10-19T08:57:20Z

Add new registers to support systems with multiply cooling devices. Modular systems support up-to four cooling devices. This capability is detected according to the registers initial setting. Signed-off-by: Vadim Pasternak Reviewed-by: Michael Link: https://lore.kernel.org/r/20211002093609.3771576-1-vadimp@nvidia.com Signed-off-by: Hans de Goede

platform/x86: mlx-platform: Configure notifier callbacks for modular system

2021-10-19T08:41:55Z

Add event notifier callbacks for modular system line cards. These callbacks are to be passed to "mlxreg-hotplug" driver by line card driver during probing. Then, when any line card related hotplug event is received (insertion ,power, synch, ready), hotplug driver will invoke callback for the relevant line card. Signed-off-by: Vadim Pasternak Reviewed-by: Michael Shych Link: https://lore.kernel.org/r/20211002093238.3771419-5-vadimp@nvidia.com Signed-off-by: Hans de Goede

platform/x86: mlx-platform: Add initial support for new modular system

2021-10-19T08:41:55Z

Add initial chassis management support for Nvidia modular Ethernet switch systems MSN4800, providing a high performance switching solution for Enterprise Data Centers (EDC) for building Ethernet based clusters, High-Performance Computing (HPC) and embedded environments. This system could be equipped with the different types of replaceable line cards and management board. The first system flavor will support the line card type MSN4800-C16 equipped with Lattice CPLD devices aimed for system and ASIC control, one Nvidia FPGA for gearboxes (PHYs) management, and four Nvidia gearboxes for the port control and with 16x100GbE QSFP28 ports and also with various devices for electrical control. The system is equipped with eight slots for line cards, four slots for power supplies and six slots for fans. It could be configured as fully populated or with even only one line card. The line cards are hot-pluggable. In the future when more line card flavors are to be available (for example line cards with 8x200Gb Eth port, with 4x400 Eth ports, or with some kind of smart cards for offloading purpose), any type of line card could be inserted at any slot. The system is based on Nvidia Spectrum-3 ASIC. The switch height is 4U and it fits standard rack size. System could be configured as fully populated or with even only one line card. The line cards are hot-pluggable. Line cards are connected to the chassis through I2C interface for the chassis management operations and through PCIe for the networking operations. Future line cards could be connected to the chassis through InfiniBand fabric, instead of PCIe. The first type of line card supports 16x100GbE QSFP28 Ethernet ports. Those line cards equipped with the programmable devices aimed for system control of Nvidia Ethernet switch ASIC control, Nvidia FPGA, Nvidia gearboxes (PHYs). The next coming card generations are supposed to support: - Line cards with 8x200Gbe QSFP28 Ethernet ports. - Line cards with 4x400Gbe QSFP-DD Ethernet ports. - Smart cards equipped with Nvidia ARM CPU for offloading and for fast access to the storage (EBoF). - Fabric cards for inter-connection. The basic system initialization flow with input signals from the programmable device to kernel hotplug driver and with OS response to some of these signals is depicted below. lc#n_prsnt *-> Input: line card presence in/out events. Informational event. Required action - 'udev' event generation for logging. lc#n_verified *-> Input: line card verification status events coming after line card security signature validation by hardware. Required action - connect line card driver and initialized line card devices feeding from system auxiliary power domain. lc#n_pwr <-* Output: line card power on / off from OS. Action should be performed by platform power management driver. lc#n_powered *-> Input: line card power on/off events coming after line card "power good" on/off events, mean that line card power up sequence has been successfully completed or line card "power good" status has been dropped. Required action - connect line card devices feeding from system main power domain. lc#n_synced *-> Input: line card synchronization events, coming after hardware-firmware synchronization handshake. Required action - to enable line card, in case lc#n_ready has been received before. lc#n_ready *-> Input: line card ready events, indicating line card PHYs ready / unready states. Required action - enable line card, in case lc#n_synced has been received before. lc#n_enable <-* Output: line card enable from OS - release FPGA and PHYs line card devices from reset state. Action should be performed by platform power management driver. lc#n_active *-> Input: when line card "active event" is received for particular line card, its network, hardware monitoring and thermal interfaces should be configured according to the configuration obtained from the firmware. When opposite "inactive event" is received all the above interfaces should be teared down. Required action - connect / disconnect the above line card interfaces through ASIC I2C chassis management driver. For initial support: - Define new system type 'VMOD0011' to support new modular system. - Provide initial platform configuration for new system type. - Extend the registers definitions. - Add support for modular system registers related to line card specific events - insertion/removal, power on/off, verification and activation. - Add hotplug configuration for the above events. - Add configurations for hotplug actions for the modular system. Signed-off-by: Vadim Pasternak Reviewed-by: Michael Shych Link: https://lore.kernel.org/r/20211002093238.3771419-3-vadimp@nvidia.com Signed-off-by: Hans de Goede

platform/x86: mlx-platform: Fix item counter assignment for MSN2700/ComEx system

2020-12-08T10:14:49Z

Fix array names to match assignments for data items and data items counter in 'mlxplat_mlxcpld_comex_items' structure for: .data = mlxplat_mlxcpld_default_pwr_items_data, .count = ARRAY_SIZE(mlxplat_mlxcpld_pwr), and .data = mlxplat_mlxcpld_default_fan_items_data, .count = ARRAY_SIZE(mlxplat_mlxcpld_fan), Replace: - 'mlxplat_mlxcpld_pwr' by 'mlxplat_mlxcpld_default_pwr_items_data' for ARRAY_SIZE() calculation. - 'mlxplat_mlxcpld_fan' by 'mlxplat_mlxcpld_default_fan_items_data' for ARRAY_SIZE() calculation. Fixes: bdd6e155e0d6 ("platform/x86: mlx-platform: Add support for new system type") Signed-off-by: Vadim Pasternak Link: https://lore.kernel.org/r/20201207174745.22889-3-vadimp@nvidia.com Signed-off-by: Hans de Goede

platform/x86: mlx-platform: Fix item counter assignment for MSN2700, MSN24xx systems

2020-12-08T10:14:49Z

Fix array names to match assignments for data items and data items counter in 'mlxplat_mlxcpld_default_items' structure for: .data = mlxplat_mlxcpld_default_pwr_items_data, .count = ARRAY_SIZE(mlxplat_mlxcpld_pwr), and .data = mlxplat_mlxcpld_default_fan_items_data, .count = ARRAY_SIZE(mlxplat_mlxcpld_fan), Replace: - 'mlxplat_mlxcpld_pwr' by 'mlxplat_mlxcpld_default_pwr_items_data' for ARRAY_SIZE() calculation. - 'mlxplat_mlxcpld_fan' by 'mlxplat_mlxcpld_default_fan_items_data' for ARRAY_SIZE() calculation. Fixes: c6acad68eb2d ("platform/mellanox: mlxreg-hotplug: Modify to use a regmap interface") Signed-off-by: Vadim Pasternak Link: https://lore.kernel.org/r/20201207174745.22889-2-vadimp@nvidia.com Signed-off-by: Hans de Goede

platform/x86: mlx-platform: remove an unused variable

2020-12-07T13:49:42Z

The only reference to the mlxplat_mlxcpld_psu[] array got removed, so there is now a warning from clang: drivers/platform/x86/mlx-platform.c:322:30: error: variable 'mlxplat_mlxcpld_psu' is not needed and will not be emitted [-Werror,-Wunneeded-internal-declaration] static struct i2c_board_info mlxplat_mlxcpld_psu[] = { Remove the array as well and adapt the ARRAY_SIZE() call accordingly. Fixes: 912b341585e3 ("platform/x86: mlx-platform: Remove PSU EEPROM from MSN274x platform configuration") Signed-off-by: Arnd Bergmann Acked-by: Vadim Pasternak Link: https://lore.kernel.org/r/20201203223105.1195709-1-arnd@kernel.org Signed-off-by: Hans de Goede

platform/x86: mlx-platform: Remove PSU EEPROM from MSN274x platform configuration

2020-11-26T14:26:22Z

Remove PSU EEPROM configuration for systems class equipped with Mellanox chip Spectrum and ATOM CPU - system types MSN274x. Till now all the systems from this class used few types of power units, all equipped with EEPROM device with address space two bytes. Thus, all these devices have been handled by EEPROM driver "24c02". There is a new requirement is to support power unit replacement by "off the shelf" device, matching electrical required parameters. Such device can be equipped with different EEPROM type, which could be one byte address space addressing or even could be not equipped with EEPROM. In such case "24c02" will not work. Fixes: ef08e14a3 ("platform/x86: mlx-platform: Add support for new msn274x system type") Signed-off-by: Vadim Pasternak Link: https://lore.kernel.org/r/20201125101056.174708-3-vadimp@nvidia.com Signed-off-by: Hans de Goede