80 lines
2 KiB
C
80 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#define PR_FMT_HEADER_MUST_BE_INCLUDED_BEFORE_ALL_HDRS
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#include "private/tmem_pr_fmt.h" PR_FMT_HEADER_MUST_BE_INCLUDED_BEFORE_ALL_HDRS
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/proc_fs.h>
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#include <linux/string.h>
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#include <linux/uaccess.h>
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#include <linux/unistd.h>
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#include <linux/mutex.h>
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#if defined(CONFIG_MTK_SSMR) || (defined(CONFIG_CMA) && defined(CONFIG_MTK_SVP))
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#include <memory_ssmr.h>
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#endif
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#include "private/tmem_utils.h"
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#include "private/tmem_error.h"
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#include "private/tmem_device.h"
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static int tmem_ssmr_get(u64 *pa, u32 *size, u32 feat, void *dev_desc)
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{
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#if defined(CONFIG_MTK_SSMR) || (defined(CONFIG_CMA) && defined(CONFIG_MTK_SVP))
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phys_addr_t ssmr_pa;
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unsigned long ssmr_size;
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UNUSED(dev_desc);
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if (ssmr_offline(&ssmr_pa, &ssmr_size, true, feat)) {
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pr_err("ssmr offline failed (feat:%d)!\n", feat);
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return TMEM_SSMR_OFFLINE_FAILED;
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}
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*pa = (u64)ssmr_pa;
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*size = (u32)ssmr_size;
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if (INVALID_ADDR(*pa) || INVALID_SIZE(*size)) {
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pr_err("ssmr pa is invalid (0x%llx, 0x%x)\n", *pa, *size);
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return TMEM_INVALID_ADDR_OR_SIZE;
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}
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pr_debug("ssmr offline passed! feat:%d, pa: 0x%llx, sz: 0x%x\n", feat,
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*pa, *size);
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return TMEM_OK;
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#else
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pr_err("%s:%d operation is not implemented yet!\n", __func__, __LINE__);
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return TMEM_OPERATION_NOT_IMPLEMENTED;
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#endif
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}
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static int tmem_ssmr_put(u32 feat, void *dev_desc)
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{
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UNUSED(dev_desc);
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#if defined(CONFIG_MTK_SSMR) || (defined(CONFIG_CMA) && defined(CONFIG_MTK_SVP))
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if (ssmr_online(feat)) {
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pr_err("ssmr online failed (feat:%d)!\n", feat);
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return TMEM_SSMR_ONLINE_FAILED;
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}
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pr_debug("ssmr online passed!\n");
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return TMEM_OK;
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#else
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pr_err("%s:%d operation is not implemented yet!\n", __func__, __LINE__);
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return TMEM_OPERATION_NOT_IMPLEMENTED;
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#endif
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}
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static struct ssmr_operations tmem_ssmr_ops = {
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.offline = tmem_ssmr_get,
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.online = tmem_ssmr_put,
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};
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void get_ssmr_ops(struct ssmr_operations **ops)
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{
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*ops = &tmem_ssmr_ops;
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}
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