1 /* SPDX-License-Identifier: GPL-2.0-only */ <<
2 /* 1 /*
3 * Copyright (c) 2015-2016 MediaTek Inc. 2 * Copyright (c) 2015-2016 MediaTek Inc.
4 * Author: Yong Wu <yong.wu@mediatek.com> 3 * Author: Yong Wu <yong.wu@mediatek.com>
>> 4 *
>> 5 * This program is free software; you can redistribute it and/or modify
>> 6 * it under the terms of the GNU General Public License version 2 as
>> 7 * published by the Free Software Foundation.
>> 8 *
>> 9 * This program is distributed in the hope that it will be useful,
>> 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> 12 * GNU General Public License for more details.
5 */ 13 */
6 #ifndef MTK_IOMMU_SMI_H 14 #ifndef MTK_IOMMU_SMI_H
7 #define MTK_IOMMU_SMI_H 15 #define MTK_IOMMU_SMI_H
8 16
9 #include <linux/bitops.h> 17 #include <linux/bitops.h>
10 #include <linux/device.h> 18 #include <linux/device.h>
11 19
12 #if IS_ENABLED(CONFIG_MTK_SMI) !! 20 #ifdef CONFIG_MTK_SMI
13 21
14 enum iommu_atf_cmd { !! 22 #define MTK_LARB_NR_MAX 8
15 IOMMU_ATF_CMD_CONFIG_SMI_LARB, <<
16 IOMMU_ATF_CMD_CONFIG_INFRA_IOMMU, <<
17 IOMMU_ATF_CMD_MAX, <<
18 }; <<
19 23
20 #define MTK_SMI_MMU_EN(port) BIT(port) 24 #define MTK_SMI_MMU_EN(port) BIT(port)
21 25
22 struct mtk_smi_larb_iommu { 26 struct mtk_smi_larb_iommu {
23 struct device *dev; 27 struct device *dev;
24 unsigned int mmu; 28 unsigned int mmu;
25 unsigned char bank[32]; <<
26 }; 29 };
>> 30
>> 31 struct mtk_smi_iommu {
>> 32 unsigned int larb_nr;
>> 33 struct mtk_smi_larb_iommu larb_imu[MTK_LARB_NR_MAX];
>> 34 };
>> 35
>> 36 /*
>> 37 * mtk_smi_larb_get: Enable the power domain and clocks for this local arbiter.
>> 38 * It also initialize some basic setting(like iommu).
>> 39 * mtk_smi_larb_put: Disable the power domain and clocks for this local arbiter.
>> 40 * Both should be called in non-atomic context.
>> 41 *
>> 42 * Returns 0 if successful, negative on failure.
>> 43 */
>> 44 int mtk_smi_larb_get(struct device *larbdev);
>> 45 void mtk_smi_larb_put(struct device *larbdev);
>> 46
>> 47 #else
>> 48
>> 49 static inline int mtk_smi_larb_get(struct device *larbdev)
>> 50 {
>> 51 return 0;
>> 52 }
>> 53
>> 54 static inline void mtk_smi_larb_put(struct device *larbdev) { }
27 55
28 #endif 56 #endif
29 57
30 #endif 58 #endif
31 59
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