Differential D50370 Diff 155720 sys/dev/ufshci/ufshci.c

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sys/dev/ufshci/ufshci.c

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				/*-
				* SPDX-License-Identifier: BSD-2-Clause
				*
				* Copyright (c) 2025, Samsung Electronics Co., Ltd.
				* All rights reserved.
				*
				* Redistribution and use in source and binary forms, with or without
				* modification, are permitted provided that the following conditions
				* are met:
				* 1. Redistributions of source code must retain the above copyright
				* notice, this list of conditions and the following disclaimer.
				* 2. Redistributions in binary form must reproduce the above copyright
				* notice, this list of conditions and the following disclaimer in the
				* documentation and/or other materials provided with the distribution.
				*
				* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
				* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
				* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
				* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
				* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
				* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
				* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
				* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
				* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
				* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
				* SUCH DAMAGE.
				*/

				#include <sys/param.h>
				#include <sys/bus.h>
				#include <sys/conf.h>
				#include <sys/module.h>

				#include <vm/uma.h>

				#include "ufshci_private.h"

				MALLOC_DEFINE(M_UFSHCI, "ufshci", "ufshci(4) memory allocations");

				int
				ufshci_attach(device_t dev)
				{
				struct ufshci_controller *ctrlr = DEVICE2SOFTC(dev);
				int status;

				status = ufshci_ctrlr_construct(ctrlr, dev);
				if (status != 0) {
				ufshci_ctrlr_destruct(ctrlr, dev);
				return (status);
				}

				ctrlr->config_hook.ich_func = ufshci_ctrlr_start_config_hook;
				ctrlr->config_hook.ich_arg = ctrlr;

				if (config_intrhook_establish(&ctrlr->config_hook) != 0)
				return (ENOMEM);

				return (0);
				}

				int
				ufshci_detach(device_t dev)
				{
				struct ufshci_controller *ctrlr = DEVICE2SOFTC(dev);

				config_intrhook_drain(&ctrlr->config_hook);

				ufshci_ctrlr_destruct(ctrlr, dev);

				return (0);
				}

				void
				ufshci_completion_poll_cb(void arg, const struct ufshci_completion cpl, bool error)
				{
				struct ufshci_completion_poll_status *status = arg;

				/*
				* Copy status into the argument passed by the caller, so that the
				* caller can check the status to determine if the the request passed
				* or failed.
				*/
				memcpy(&status->cpl.response_upiu, &cpl->response_upiu, cpl->size);
				status->error = error;
				atomic_store_rel_int(&status->done, 1);
				}

				static int
				ufshci_modevent(module_t mod __unused, int type __unused, void *argp __unused)
				{
				return (0);
				}

				static moduledata_t ufshci_mod = {
				"ufshci",
				ufshci_modevent,
				0
				};

				DECLARE_MODULE(ufshci, ufshci_mod, SI_SUB_DRIVERS, SI_ORDER_FIRST);
				MODULE_VERSION(ufshci, 1);
				MODULE_DEPEND(ufshci, cam, 1, 1, 1);