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Diffstat (limited to 'original-kernel-headers/linux/msm_ion.h')
-rw-r--r-- | original-kernel-headers/linux/msm_ion.h | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/original-kernel-headers/linux/msm_ion.h b/original-kernel-headers/linux/msm_ion.h new file mode 100644 index 0000000..7585861 --- /dev/null +++ b/original-kernel-headers/linux/msm_ion.h @@ -0,0 +1,321 @@ +/* + * + * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef _LINUX_MSM_ION_H +#define _LINUX_MSM_ION_H + +#include <linux/ion.h> + +#define ION_HEAP_TYPE_MSM_START (ION_HEAP_TYPE_CUSTOM + 1) +#define ION_HEAP_TYPE_IOMMU (ION_HEAP_TYPE_MSM_START) +#define ION_HEAP_TYPE_CP (ION_HEAP_TYPE_IOMMU + 1) + +/** + * These are the only ids that should be used for Ion heap ids. + * The ids listed are the order in which allocation will be attempted + * if specified. Don't swap the order of heap ids unless you know what + * you are doing! + * Id's are spaced by purpose to allow new Id's to be inserted in-between (for + * possible fallbacks) + */ + +enum ion_heap_ids { + INVALID_HEAP_ID = -1, + ION_CP_MM_HEAP_ID = 8, + ION_CP_MFC_HEAP_ID = 12, + ION_CP_WB_HEAP_ID = 16, /* 8660 only */ + ION_CAMERA_HEAP_ID = 20, /* 8660 only */ + ION_ADSP_HEAP_ID = 22, + ION_SF_HEAP_ID = 24, + ION_IOMMU_HEAP_ID = 25, + ION_QSECOM_HEAP_ID = 27, + ION_AUDIO_HEAP_ID = 28, + + ION_MM_FIRMWARE_HEAP_ID = 29, + ION_SYSTEM_HEAP_ID = 30, + + ION_HEAP_ID_RESERVED = 31 /** Bit reserved for ION_SECURE flag */ +}; + +enum ion_fixed_position { + NOT_FIXED, + FIXED_LOW, + FIXED_MIDDLE, + FIXED_HIGH, +}; + +enum cp_mem_usage { + VIDEO_BITSTREAM = 0x1, + VIDEO_PIXEL = 0x2, + VIDEO_NONPIXEL = 0x3, + MAX_USAGE = 0x4, + UNKNOWN = 0x7FFFFFFF, +}; + +#define ION_HEAP_CP_MASK (1 << ION_HEAP_TYPE_CP) + +/** + * Flag to use when allocating to indicate that a heap is secure. + */ +#define ION_SECURE (1 << ION_HEAP_ID_RESERVED) + +/** + * Flag for clients to force contiguous memort allocation + * + * Use of this flag is carefully monitored! + */ +#define ION_FORCE_CONTIGUOUS (1 << 30) + +/** + * Macro should be used with ion_heap_ids defined above. + */ +#define ION_HEAP(bit) (1 << (bit)) + +#define ION_ADSP_HEAP_NAME "adsp" +#define ION_VMALLOC_HEAP_NAME "vmalloc" +#define ION_AUDIO_HEAP_NAME "audio" +#define ION_SF_HEAP_NAME "sf" +#define ION_MM_HEAP_NAME "mm" +#define ION_CAMERA_HEAP_NAME "camera_preview" +#define ION_IOMMU_HEAP_NAME "iommu" +#define ION_MFC_HEAP_NAME "mfc" +#define ION_WB_HEAP_NAME "wb" +#define ION_MM_FIRMWARE_HEAP_NAME "mm_fw" +#define ION_QSECOM_HEAP_NAME "qsecom" +#define ION_FMEM_HEAP_NAME "fmem" + +#define ION_SET_CACHED(__cache) (__cache | ION_FLAG_CACHED) +#define ION_SET_UNCACHED(__cache) (__cache & ~ION_FLAG_CACHED) + +#define ION_IS_CACHED(__flags) ((__flags) & ION_FLAG_CACHED) + +#ifdef __KERNEL__ + +/* + * This flag allows clients when mapping into the IOMMU to specify to + * defer un-mapping from the IOMMU until the buffer memory is freed. + */ +#define ION_IOMMU_UNMAP_DELAYED 1 + +/** + * struct ion_cp_heap_pdata - defines a content protection heap in the given + * platform + * @permission_type: Memory ID used to identify the memory to TZ + * @align: Alignment requirement for the memory + * @secure_base: Base address for securing the heap. + * Note: This might be different from actual base address + * of this heap in the case of a shared heap. + * @secure_size: Memory size for securing the heap. + * Note: This might be different from actual size + * of this heap in the case of a shared heap. + * @reusable Flag indicating whether this heap is reusable of not. + * (see FMEM) + * @mem_is_fmem Flag indicating whether this memory is coming from fmem + * or not. + * @fixed_position If nonzero, position in the fixed area. + * @virt_addr: Virtual address used when using fmem. + * @iommu_map_all: Indicates whether we should map whole heap into IOMMU. + * @iommu_2x_map_domain: Indicates the domain to use for overmapping. + * @request_region: function to be called when the number of allocations + * goes from 0 -> 1 + * @release_region: function to be called when the number of allocations + * goes from 1 -> 0 + * @setup_region: function to be called upon ion registration + * @memory_type:Memory type used for the heap + * @no_nonsecure_alloc: don't allow non-secure allocations from this heap + * + */ +struct ion_cp_heap_pdata { + enum ion_permission_type permission_type; + unsigned int align; + ion_phys_addr_t secure_base; /* Base addr used when heap is shared */ + size_t secure_size; /* Size used for securing heap when heap is shared*/ + int reusable; + int mem_is_fmem; + int is_cma; + enum ion_fixed_position fixed_position; + int iommu_map_all; + int iommu_2x_map_domain; + ion_virt_addr_t *virt_addr; + int (*request_region)(void *); + int (*release_region)(void *); + void *(*setup_region)(void); + enum ion_memory_types memory_type; + int no_nonsecure_alloc; +}; + +/** + * struct ion_co_heap_pdata - defines a carveout heap in the given platform + * @adjacent_mem_id: Id of heap that this heap must be adjacent to. + * @align: Alignment requirement for the memory + * @mem_is_fmem Flag indicating whether this memory is coming from fmem + * or not. + * @fixed_position If nonzero, position in the fixed area. + * @request_region: function to be called when the number of allocations + * goes from 0 -> 1 + * @release_region: function to be called when the number of allocations + * goes from 1 -> 0 + * @setup_region: function to be called upon ion registration + * @memory_type:Memory type used for the heap + * + */ +struct ion_co_heap_pdata { + int adjacent_mem_id; + unsigned int align; + int mem_is_fmem; + enum ion_fixed_position fixed_position; + int (*request_region)(void *); + int (*release_region)(void *); + void *(*setup_region)(void); + enum ion_memory_types memory_type; +}; + +#ifdef CONFIG_ION +/** + * msm_ion_secure_heap - secure a heap. Wrapper around ion_secure_heap. + * + * @heap_id - heap id to secure. + * + * Secure a heap + * Returns 0 on success + */ +int msm_ion_secure_heap(int heap_id); + +/** + * msm_ion_unsecure_heap - unsecure a heap. Wrapper around ion_unsecure_heap. + * + * @heap_id - heap id to secure. + * + * Un-secure a heap + * Returns 0 on success + */ +int msm_ion_unsecure_heap(int heap_id); + +/** + * msm_ion_secure_heap_2_0 - secure a heap using 2.0 APIs + * Wrapper around ion_secure_heap. + * + * @heap_id - heap id to secure. + * @usage - usage hint to TZ + * + * Secure a heap + * Returns 0 on success + */ +int msm_ion_secure_heap_2_0(int heap_id, enum cp_mem_usage usage); + +/** + * msm_ion_unsecure_heap - unsecure a heap secured with 3.0 APIs. + * Wrapper around ion_unsecure_heap. + * + * @heap_id - heap id to secure. + * @usage - usage hint to TZ + * + * Un-secure a heap + * Returns 0 on success + */ +int msm_ion_unsecure_heap_2_0(int heap_id, enum cp_mem_usage usage); +#else +static inline int msm_ion_secure_heap(int heap_id) +{ + return -ENODEV; + +} + +static inline int msm_ion_unsecure_heap(int heap_id) +{ + return -ENODEV; +} + +static inline int msm_ion_secure_heap_2_0(int heap_id, enum cp_mem_usage usage) +{ + return -ENODEV; +} + +static inline int msm_ion_unsecure_heap_2_0(int heap_id, + enum cp_mem_usage usage) +{ + return -ENODEV; +} +#endif /* CONFIG_ION */ + +#endif /* __KERNEL */ + +/* struct ion_flush_data - data passed to ion for flushing caches + * + * @handle: handle with data to flush + * @fd: fd to flush + * @vaddr: userspace virtual address mapped with mmap + * @offset: offset into the handle to flush + * @length: length of handle to flush + * + * Performs cache operations on the handle. If p is the start address + * of the handle, p + offset through p + offset + length will have + * the cache operations performed + */ +struct ion_flush_data { + struct ion_handle *handle; + int fd; + void *vaddr; + unsigned int offset; + unsigned int length; +}; + +/* struct ion_flag_data - information about flags for this buffer + * + * @handle: handle to get flags from + * @flags: flags of this handle + * + * Takes handle as an input and outputs the flags from the handle + * in the flag field. + */ +struct ion_flag_data { + struct ion_handle *handle; + unsigned long flags; +}; + +#define ION_IOC_MSM_MAGIC 'M' + +/** + * DOC: ION_IOC_CLEAN_CACHES - clean the caches + * + * Clean the caches of the handle specified. + */ +#define ION_IOC_CLEAN_CACHES _IOWR(ION_IOC_MSM_MAGIC, 0, \ + struct ion_flush_data) +/** + * DOC: ION_IOC_INV_CACHES - invalidate the caches + * + * Invalidate the caches of the handle specified. + */ +#define ION_IOC_INV_CACHES _IOWR(ION_IOC_MSM_MAGIC, 1, \ + struct ion_flush_data) +/** + * DOC: ION_IOC_CLEAN_INV_CACHES - clean and invalidate the caches + * + * Clean and invalidate the caches of the handle specified. + */ +#define ION_IOC_CLEAN_INV_CACHES _IOWR(ION_IOC_MSM_MAGIC, 2, \ + struct ion_flush_data) + +/** + * DOC: ION_IOC_GET_FLAGS - get the flags of the handle + * + * Gets the flags of the current handle which indicate cachability, + * secure state etc. + */ +#define ION_IOC_GET_FLAGS _IOWR(ION_IOC_MSM_MAGIC, 3, \ + struct ion_flag_data) + +#endif |