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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
111 lines
2.3 KiB
C
111 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2022-2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
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*
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* Authors:
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* Abdellatif El Khlifi <abdellatif.elkhlifi@arm.com>
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*/
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#include <common.h>
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#include <arm_ffa.h>
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#include <dm.h>
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#include <log.h>
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#include <asm/global_data.h>
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#include <asm/sandbox_arm_ffa_priv.h>
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#include <dm/device-internal.h>
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#include <linux/errno.h>
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DECLARE_GLOBAL_DATA_PTR;
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/**
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* sandbox_ffa_discover() - perform sandbox FF-A discovery
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* @dev: The sandbox FF-A bus device
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* Try to discover the FF-A framework. Discovery is performed by
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* querying the FF-A framework version from secure world using the FFA_VERSION ABI.
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* Return:
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*
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* 0 on success. Otherwise, failure
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*/
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static int sandbox_ffa_discover(struct udevice *dev)
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{
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int ret;
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struct udevice *emul;
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log_debug("Emulated FF-A framework discovery\n");
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ret = ffa_emul_find(dev, &emul);
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if (ret) {
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log_err("Cannot find FF-A emulator\n");
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return ret;
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}
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ret = ffa_get_version_hdlr(dev);
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if (ret)
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return ret;
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return 0;
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}
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/**
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* sandbox_ffa_probe() - The sandbox FF-A driver probe function
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* @dev: the sandbox-arm-ffa device
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* Save the emulator device in uc_priv.
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* Return:
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*
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* 0 on success.
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*/
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static int sandbox_ffa_probe(struct udevice *dev)
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{
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int ret;
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struct ffa_priv *uc_priv = dev_get_uclass_priv(dev);
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ret = uclass_first_device_err(UCLASS_FFA_EMUL, &uc_priv->emul);
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if (ret) {
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log_err("Cannot find FF-A emulator\n");
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return ret;
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}
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return 0;
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}
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/**
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* sandbox_ffa_bind() - The sandbox FF-A driver bind function
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* @dev: the sandbox-arm-ffa device
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* Try to discover the emulated FF-A bus.
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* Return:
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*
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* 0 on success.
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*/
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static int sandbox_ffa_bind(struct udevice *dev)
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{
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int ret;
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ret = sandbox_ffa_discover(dev);
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if (ret)
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return ret;
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return 0;
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}
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/* Sandbox Arm FF-A emulator operations */
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static const struct ffa_bus_ops sandbox_ffa_ops = {
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.partition_info_get = ffa_get_partitions_info_hdlr,
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.sync_send_receive = ffa_msg_send_direct_req_hdlr,
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.rxtx_unmap = ffa_unmap_rxtx_buffers_hdlr,
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};
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static const struct udevice_id sandbox_ffa_id[] = {
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{ "sandbox,arm-ffa", 0 },
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{ },
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};
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/* Declaring the sandbox FF-A driver under UCLASS_FFA */
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U_BOOT_DRIVER(sandbox_arm_ffa) = {
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.name = "sandbox_arm_ffa",
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.of_match = sandbox_ffa_id,
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.id = UCLASS_FFA,
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.bind = sandbox_ffa_bind,
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.probe = sandbox_ffa_probe,
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.ops = &sandbox_ffa_ops,
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};
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