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358599efd8
This change introduces SCMI agent uclass to interact with a firmware using the SCMI protocols [1]. SCMI agent uclass currently supports a single method to request processing of the SCMI message by an identified server. A SCMI message is made of a byte payload associated to a protocol ID and a message ID, all defined by the SCMI specification [1]. On return from process_msg() method, the caller gets the service response. SCMI agent uclass defines a post bind generic sequence for all devices. The sequence binds all the SCMI protocols listed in the FDT for that SCMI agent device. Currently none, but later change will introduce protocols. This change implements a simple sandbox device for the SCMI agent uclass. The sandbox nicely answers SCMI_NOT_SUPPORTED to SCMI messages. To prepare for further test support, the sandbox exposes a architecture function for test application to read the sandbox emulated devices state. Currently supports 2 SCMI agents, identified by an ID in the FDT device name. The simplistic DM test does nothing yet. SCMI agent uclass is designed for platforms that embed a SCMI server in a firmware hosted somewhere, for example in a companion co-processor or in the secure world of the executing processor. SCMI protocols allow an SCMI agent to discover and access external resources as clock, reset controllers and more. SCMI agent and server communicate following the SCMI specification [1]. This SCMI agent implementation complies with the DT bindings defined in the Linux kernel source tree regarding SCMI agent description since v5.8. Links: [1] https://developer.arm.com/architectures/system-architectures/software-standards/scmi Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org> Cc: Simon Glass <sjg@chromium.org> Cc: Peng Fan <peng.fan@nxp.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Reviewed-by: Simon Glass <sjg@chromium.org>
133 lines
5.1 KiB
C
133 lines
5.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2013 Google, Inc
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*
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* (C) Copyright 2012
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* Pavel Herrmann <morpheus.ibis@gmail.com>
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*/
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#ifndef _DM_UCLASS_ID_H
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#define _DM_UCLASS_ID_H
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/* TODO(sjg@chromium.org): this could be compile-time generated */
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enum uclass_id {
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/* These are used internally by driver model */
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UCLASS_ROOT = 0,
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UCLASS_DEMO,
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UCLASS_TEST,
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UCLASS_TEST_FDT,
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UCLASS_TEST_BUS,
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UCLASS_TEST_PROBE,
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UCLASS_TEST_DUMMY,
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UCLASS_TEST_DEVRES,
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UCLASS_TEST_ACPI,
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UCLASS_SPI_EMUL, /* sandbox SPI device emulator */
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UCLASS_I2C_EMUL, /* sandbox I2C device emulator */
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UCLASS_I2C_EMUL_PARENT, /* parent for I2C device emulators */
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UCLASS_PCI_EMUL, /* sandbox PCI device emulator */
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UCLASS_PCI_EMUL_PARENT, /* parent for PCI device emulators */
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UCLASS_USB_EMUL, /* sandbox USB bus device emulator */
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UCLASS_AXI_EMUL, /* sandbox AXI bus device emulator */
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/* U-Boot uclasses start here - in alphabetical order */
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UCLASS_ACPI_PMC, /* (x86) Power-management controller (PMC) */
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UCLASS_ADC, /* Analog-to-digital converter */
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UCLASS_AHCI, /* SATA disk controller */
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UCLASS_AUDIO_CODEC, /* Audio codec with control and data path */
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UCLASS_AXI, /* AXI bus */
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UCLASS_BLK, /* Block device */
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UCLASS_BOARD, /* Device information from hardware */
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UCLASS_BOOTCOUNT, /* Bootcount backing store */
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UCLASS_BUTTON, /* Button */
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UCLASS_CACHE, /* Cache controller */
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UCLASS_CLK, /* Clock source, e.g. used by peripherals */
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UCLASS_CPU, /* CPU, typically part of an SoC */
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UCLASS_CROS_EC, /* Chrome OS EC */
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UCLASS_DISPLAY, /* Display (e.g. DisplayPort, HDMI) */
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UCLASS_DSI_HOST, /* Display Serial Interface host */
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UCLASS_DMA, /* Direct Memory Access */
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UCLASS_EFI, /* EFI managed devices */
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UCLASS_ETH, /* Ethernet device */
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UCLASS_ETH_PHY, /* Ethernet PHY device */
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UCLASS_FIRMWARE, /* Firmware */
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UCLASS_FS_FIRMWARE_LOADER, /* Generic loader */
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UCLASS_GPIO, /* Bank of general-purpose I/O pins */
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UCLASS_HWSPINLOCK, /* Hardware semaphores */
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UCLASS_I2C, /* I2C bus */
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UCLASS_I2C_EEPROM, /* I2C EEPROM device */
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UCLASS_I2C_GENERIC, /* Generic I2C device */
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UCLASS_I2C_MUX, /* I2C multiplexer */
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UCLASS_I2S, /* I2S bus */
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UCLASS_IDE, /* IDE device */
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UCLASS_IRQ, /* Interrupt controller */
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UCLASS_KEYBOARD, /* Keyboard input device */
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UCLASS_LED, /* Light-emitting diode (LED) */
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UCLASS_LPC, /* x86 'low pin count' interface */
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UCLASS_MAILBOX, /* Mailbox controller */
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UCLASS_MASS_STORAGE, /* Mass storage device */
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UCLASS_MDIO, /* MDIO bus */
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UCLASS_MDIO_MUX, /* MDIO MUX/switch */
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UCLASS_MISC, /* Miscellaneous device */
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UCLASS_MMC, /* SD / MMC card or chip */
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UCLASS_MOD_EXP, /* RSA Mod Exp device */
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UCLASS_MTD, /* Memory Technology Device (MTD) device */
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UCLASS_NOP, /* No-op devices */
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UCLASS_NORTHBRIDGE, /* Intel Northbridge / SDRAM controller */
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UCLASS_NVME, /* NVM Express device */
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UCLASS_P2SB, /* (x86) Primary-to-Sideband Bus */
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UCLASS_PANEL, /* Display panel, such as an LCD */
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UCLASS_PANEL_BACKLIGHT, /* Backlight controller for panel */
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UCLASS_PCH, /* x86 platform controller hub */
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UCLASS_PCI, /* PCI bus */
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UCLASS_PCI_EP, /* PCI endpoint device */
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UCLASS_PCI_GENERIC, /* Generic PCI bus device */
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UCLASS_PHY, /* Physical Layer (PHY) device */
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UCLASS_PINCONFIG, /* Pin configuration node device */
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UCLASS_PINCTRL, /* Pinctrl (pin muxing/configuration) device */
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UCLASS_PMIC, /* PMIC I/O device */
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UCLASS_POWER_DOMAIN, /* (SoC) Power domains */
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UCLASS_PWM, /* Pulse-width modulator */
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UCLASS_PWRSEQ, /* Power sequence device */
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UCLASS_RAM, /* RAM controller */
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UCLASS_REGULATOR, /* Regulator device */
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UCLASS_REMOTEPROC, /* Remote Processor device */
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UCLASS_RESET, /* Reset controller device */
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UCLASS_RNG, /* Random Number Generator */
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UCLASS_RTC, /* Real time clock device */
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UCLASS_SCMI_AGENT, /* Interface with an SCMI server */
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UCLASS_SCSI, /* SCSI device */
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UCLASS_SERIAL, /* Serial UART */
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UCLASS_SIMPLE_BUS, /* Bus with child devices */
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UCLASS_SMEM, /* Shared memory interface */
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UCLASS_SOC, /* SOC Device */
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UCLASS_SOUND, /* Playing simple sounds */
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UCLASS_SPI, /* SPI bus */
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UCLASS_SPI_FLASH, /* SPI flash */
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UCLASS_SPI_GENERIC, /* Generic SPI flash target */
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UCLASS_SPMI, /* System Power Management Interface bus */
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UCLASS_SYSCON, /* System configuration device */
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UCLASS_SYSRESET, /* System reset device */
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UCLASS_TEE, /* Trusted Execution Environment device */
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UCLASS_THERMAL, /* Thermal sensor */
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UCLASS_TIMER, /* Timer device */
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UCLASS_TPM, /* Trusted Platform Module TIS interface */
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UCLASS_UFS, /* Universal Flash Storage */
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UCLASS_USB, /* USB bus */
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UCLASS_USB_DEV_GENERIC, /* USB generic device */
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UCLASS_USB_HUB, /* USB hub */
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UCLASS_USB_GADGET_GENERIC, /* USB generic device */
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UCLASS_VIDEO, /* Video or LCD device */
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UCLASS_VIDEO_BRIDGE, /* Video bridge, e.g. DisplayPort to LVDS */
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UCLASS_VIDEO_CONSOLE, /* Text console driver for video device */
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UCLASS_VIDEO_OSD, /* On-screen display */
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UCLASS_VIRTIO, /* VirtIO transport device */
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UCLASS_W1, /* Dallas 1-Wire bus */
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UCLASS_W1_EEPROM, /* one-wire EEPROMs */
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UCLASS_WDT, /* Watchdog Timer driver */
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UCLASS_PVBLOCK, /* Xen virtual block device */
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UCLASS_COUNT,
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UCLASS_INVALID = -1,
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};
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#endif
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