1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (c) 2018-2019, The Linux Foundation. All rights reserved. 4 */ 5 #ifndef _LINUX_MSM_ION_H 6 #define _LINUX_MSM_ION_H 7 8 #include <linux/types.h> 9 10 #define ION_BIT(nr) (1U << (nr)) 11 12 /** 13 * TARGET_ION_ABI_VERSION can be used by user space clients to ensure that at 14 * compile time only their code which uses the appropriate ION APIs for 15 * this kernel is included. 16 */ 17 #define TARGET_ION_ABI_VERSION 2 18 19 enum msm_ion_heap_types { 20 ION_HEAP_TYPE_MSM_START = 6, 21 ION_HEAP_TYPE_SECURE_DMA = ION_HEAP_TYPE_MSM_START, 22 ION_HEAP_TYPE_SYSTEM_SECURE, 23 ION_HEAP_TYPE_HYP_CMA, 24 ION_HEAP_TYPE_SECURE_CARVEOUT, 25 }; 26 27 /** 28 * These are the only ids that should be used for Ion heap ids. 29 * The ids listed are the order in which allocation will be attempted 30 * if specified. Don't swap the order of heap ids unless you know what 31 * you are doing! 32 * Id's are spaced by purpose to allow new Id's to be inserted in-between (for 33 * possible fallbacks) 34 */ 35 36 enum ion_heap_ids { 37 INVALID_HEAP_ID = -1, 38 ION_CP_MM_HEAP_ID = 8, 39 ION_SECURE_HEAP_ID = 9, 40 ION_SECURE_DISPLAY_HEAP_ID = 10, 41 ION_SPSS_HEAP_ID = 13, /* Secure Processor ION heap */ 42 ION_ADSP_HEAP_ID = 22, 43 ION_SYSTEM_HEAP_ID = 25, 44 ION_QSECOM_HEAP_ID = 27, 45 ION_HEAP_ID_RESERVED = 31 /** Bit reserved for ION_FLAG_SECURE flag */ 46 }; 47 48 /** 49 * Newly added heap ids have to be #define(d) since all API changes must 50 * include a new #define. 51 */ 52 #define ION_SECURE_CARVEOUT_HEAP_ID 14 53 #define ION_QSECOM_TA_HEAP_ID 19 54 #define ION_AUDIO_HEAP_ID 28 55 #define ION_CAMERA_HEAP_ID 20 56 #define ION_USER_CONTIG_HEAP_ID 26 57 /** 58 * Flags to be used when allocating from the secure heap for 59 * content protection 60 */ 61 #define ION_FLAG_CP_TOUCH ION_BIT(17) 62 #define ION_FLAG_CP_BITSTREAM ION_BIT(18) 63 #define ION_FLAG_CP_PIXEL ION_BIT(19) 64 #define ION_FLAG_CP_NON_PIXEL ION_BIT(20) 65 #define ION_FLAG_CP_CAMERA ION_BIT(21) 66 #define ION_FLAG_CP_HLOS ION_BIT(22) 67 #define ION_FLAG_CP_SPSS_SP ION_BIT(23) 68 #define ION_FLAG_CP_SPSS_SP_SHARED ION_BIT(24) 69 #define ION_FLAG_CP_SEC_DISPLAY ION_BIT(25) 70 #define ION_FLAG_CP_APP ION_BIT(26) 71 #define ION_FLAG_CP_CAMERA_PREVIEW ION_BIT(27) 72 /* ION_FLAG_ALLOW_NON_CONTIG uses ION_BIT(28) */ 73 #define ION_FLAG_CP_CDSP ION_BIT(29) 74 #define ION_FLAG_CP_SPSS_HLOS_SHARED ION_BIT(30) 75 76 #define ION_FLAGS_CP_MASK 0x6FFE0000 77 78 /** 79 * Flag to allow non continguous allocation of memory from secure 80 * heap 81 */ 82 #define ION_FLAG_ALLOW_NON_CONTIG ION_BIT(28) 83 84 /** 85 * Flag to use when allocating to indicate that a heap is secure. 86 * Do NOT use BIT macro since it is defined in #ifdef __KERNEL__ 87 */ 88 #define ION_FLAG_SECURE ION_BIT(ION_HEAP_ID_RESERVED) 89 90 /* 91 * Used in conjunction with heap which pool memory to force an allocation 92 * to come from the page allocator directly instead of from the pool allocation 93 */ 94 #define ION_FLAG_POOL_FORCE_ALLOC ION_BIT(16) 95 96 /** 97 * Macro should be used with ion_heap_ids defined above. 98 */ 99 #define ION_HEAP(bit) ION_BIT(bit) 100 101 #define ION_IOC_MSM_MAGIC 'M' 102 103 struct ion_prefetch_regions { 104 __u64 sizes; 105 __u32 vmid; 106 __u32 nr_sizes; 107 }; 108 109 struct ion_prefetch_data { 110 __u64 len; 111 __u64 regions; 112 __u32 heap_id; 113 __u32 nr_regions; 114 }; 115 116 #define ION_IOC_PREFETCH _IOWR(ION_IOC_MSM_MAGIC, 3, \ 117 struct ion_prefetch_data) 118 119 #define ION_IOC_DRAIN _IOWR(ION_IOC_MSM_MAGIC, 4, \ 120 struct ion_prefetch_data) 121 122 #endif /* _LINUX_MSM_ION_H */ 123