1 #ifndef _LINUX_MSM_ION_H 2 #define _LINUX_MSM_ION_H 3 4 #include <linux/types.h> 5 6 #define ION_BIT(nr) (1U << (nr)) 7 8 /** 9 * TARGET_ION_ABI_VERSION can be used by user space clients to ensure that at 10 * compile time only their code which uses the appropriate ION APIs for 11 * this kernel is included. 12 */ 13 #define TARGET_ION_ABI_VERSION 2 14 15 enum msm_ion_heap_types { 16 ION_HEAP_TYPE_MSM_START = 6, 17 ION_HEAP_TYPE_SECURE_DMA = ION_HEAP_TYPE_MSM_START, 18 ION_HEAP_TYPE_SYSTEM_SECURE, 19 ION_HEAP_TYPE_HYP_CMA, 20 ION_HEAP_TYPE_SECURE_CARVEOUT, 21 }; 22 23 /** 24 * These are the only ids that should be used for Ion heap ids. 25 * The ids listed are the order in which allocation will be attempted 26 * if specified. Don't swap the order of heap ids unless you know what 27 * you are doing! 28 * Id's are spaced by purpose to allow new Id's to be inserted in-between (for 29 * possible fallbacks) 30 */ 31 32 enum ion_heap_ids { 33 INVALID_HEAP_ID = -1, 34 ION_CP_MM_HEAP_ID = 8, 35 ION_SECURE_HEAP_ID = 9, 36 ION_SECURE_DISPLAY_HEAP_ID = 10, 37 ION_VIDEO_HEAP_ID = 12, 38 ION_SPSS_HEAP_ID = 13, /* Secure Processor ION heap */ 39 ION_ADSP_HEAP_ID = 22, 40 ION_SYSTEM_HEAP_ID = 25, 41 ION_QSECOM_HEAP_ID = 27, 42 ION_HEAP_ID_RESERVED = 31 /** Bit reserved for ION_FLAG_SECURE flag */ 43 }; 44 45 /** 46 * Newly added heap ids have to be #define(d) since all API changes must 47 * include a new #define. 48 */ 49 #define ION_SECURE_CARVEOUT_HEAP_ID 14 50 #define ION_QSECOM_TA_HEAP_ID 19 51 #define ION_AUDIO_HEAP_ID 28 52 #define ION_CAMERA_HEAP_ID 20 53 #define ION_USER_CONTIG_HEAP_ID 26 54 /** 55 * Flags to be used when allocating from the secure heap for 56 * content protection 57 */ 58 #define ION_FLAG_CP_CAMERA_ENCODE ION_BIT(14) 59 #define ION_FLAG_CP_DSP_EXT ION_BIT(15) 60 /* ION_FLAG_POOL_FORCE_ALLOC uses ION_BIT(16) */ 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 /* ION_FLAG_SECURE uses ION_BIT(31) */ 76 77 #define ION_FLAGS_CP_MASK 0x6FFEC000 78 79 /** 80 * Flag to allow non continguous allocation of memory from secure 81 * heap 82 */ 83 #define ION_FLAG_ALLOW_NON_CONTIG ION_BIT(28) 84 85 /** 86 * Flag to use when allocating to indicate that a heap is secure. 87 * Do NOT use BIT macro since it is defined in #ifdef __KERNEL__ 88 */ 89 #define ION_FLAG_SECURE ION_BIT(ION_HEAP_ID_RESERVED) 90 91 /* 92 * Used in conjunction with heap which pool memory to force an allocation 93 * to come from the page allocator directly instead of from the pool allocation 94 */ 95 #define ION_FLAG_POOL_FORCE_ALLOC ION_BIT(16) 96 97 /** 98 * Macro should be used with ion_heap_ids defined above. 99 */ 100 #define ION_HEAP(bit) ION_BIT(bit) 101 102 #define ION_IOC_MSM_MAGIC 'M' 103 104 struct ion_prefetch_regions { 105 __u64 sizes; 106 __u32 vmid; 107 __u32 nr_sizes; 108 }; 109 110 struct ion_prefetch_data { 111 __u64 len; 112 __u64 regions; 113 __u32 heap_id; 114 __u32 nr_regions; 115 }; 116 117 #define ION_IOC_PREFETCH _IOWR(ION_IOC_MSM_MAGIC, 3, \ 118 struct ion_prefetch_data) 119 120 #define ION_IOC_DRAIN _IOWR(ION_IOC_MSM_MAGIC, 4, \ 121 struct ion_prefetch_data) 122 123 #endif /* _LINUX_MSM_ION_H */ 124