Pull char/misc driver updates from Greg KH: "Here is the big char/misc driver patchset for 4.11-rc1. Lots of different driver subsystems updated here: rework for the hyperv subsystem to handle new platforms better, mei and w1 and extcon driver updates, as well as a number of other "minor" driver updates. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (169 commits) goldfish: Sanitize the broken interrupt handler x86/platform/goldfish: Prevent unconditional loading vmbus: replace modulus operation with subtraction vmbus: constify parameters where possible vmbus: expose hv_begin/end_read vmbus: remove conditional locking of vmbus_write vmbus: add direct isr callback mode vmbus: change to per channel tasklet vmbus: put related per-cpu variable together vmbus: callback is in softirq not workqueue binder: Add support for file-descriptor arrays binder: Add support for scatter-gather binder: Add extra size to allocator binder: Refactor binder_transact() binder: Support multiple /dev instances binder: Deal with contexts in debugfs binder: Support multiple context managers binder: Split flat_binder_object auxdisplay: ht16k33: remove private workqueue auxdisplay: ht16k33: rework input device initialization ...
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| @@ -33,6 +33,8 @@ enum { · 32 unmodified lines | |||
| 33 | BINDER_TYPE_HANDLE = B_PACK_CHARS('s', 'h', '*', B_TYPE_LARGE), | 33 | BINDER_TYPE_HANDLE = B_PACK_CHARS('s', 'h', '*', B_TYPE_LARGE), |
| 34 | BINDER_TYPE_WEAK_HANDLE = B_PACK_CHARS('w', 'h', '*', B_TYPE_LARGE), | 34 | BINDER_TYPE_WEAK_HANDLE = B_PACK_CHARS('w', 'h', '*', B_TYPE_LARGE), |
| 35 | BINDER_TYPE_FD = B_PACK_CHARS('f', 'd', '*', B_TYPE_LARGE), | 35 | BINDER_TYPE_FD = B_PACK_CHARS('f', 'd', '*', B_TYPE_LARGE), |
| 36 | BINDER_TYPE_FDA = B_PACK_CHARS('f', 'd', 'a', B_TYPE_LARGE), | ||
| 37 | BINDER_TYPE_PTR = B_PACK_CHARS('p', 't', '*', B_TYPE_LARGE), | ||
| 36 | }; | 38 | }; |
| 37 | 39 | ||
| 38 | enum { | 40 | enum { |
| @@ -48,6 +50,14 @@ typedef __u64 binder_size_t; · 9 unmodified lines | |||
| 48 | typedef __u64 binder_uintptr_t; | 50 | typedef __u64 binder_uintptr_t; |
| 49 | #endif | 51 | #endif |
| 50 | 52 | ||
| 53 | /** | ||
| 54 | * struct binder_object_header - header shared by all binder metadata objects. | ||
| 55 | * @type: type of the object | ||
| 56 | */ | ||
| 57 | struct binder_object_header { | ||
| 58 | __u32 type; | ||
| 59 | }; | ||
| 60 | |||
| 51 | /* | 61 | /* |
| 52 | * This is the flattened representation of a Binder object for transfer | 62 | * This is the flattened representation of a Binder object for transfer |
| 53 | * between processes. The 'offsets' supplied as part of a binder transaction | 63 | * between processes. The 'offsets' supplied as part of a binder transaction |
| @@ -56,9 +66,8 @@ typedef __u64 binder_uintptr_t; · 2 unmodified lines | |||
| 56 | * between processes. | 66 | * between processes. |
| 57 | */ | 67 | */ |
| 58 | struct flat_binder_object { | 68 | struct flat_binder_object { |
| 59 | /* 8 bytes for large_flat_header. */ | 69 | struct binder_object_header hdr; |
| 60 | __u32 type; | 70 | __u32 flags; |
| 61 | __u32 flags; | ||
| 62 | 71 | ||
| 63 | /* 8 bytes of data. */ | 72 | /* 8 bytes of data. */ |
| 64 | union { | 73 | union { |
| @@ -70,6 +79,84 @@ struct flat_binder_object { · 5 unmodified lines | |||
| 70 | binder_uintptr_t cookie; | 79 | binder_uintptr_t cookie; |
| 71 | }; | 80 | }; |
| 72 | 81 | ||
| 82 | /** | ||
| 83 | * struct binder_fd_object - describes a filedescriptor to be fixed up. | ||
| 84 | * @hdr: common header structure | ||
| 85 | * @pad_flags: padding to remain compatible with old userspace code | ||
| 86 | * @pad_binder: padding to remain compatible with old userspace code | ||
| 87 | * @fd: file descriptor | ||
| 88 | * @cookie: opaque data, used by user-space | ||
| 89 | */ | ||
| 90 | struct binder_fd_object { | ||
| 91 | struct binder_object_header hdr; | ||
| 92 | __u32 pad_flags; | ||
| 93 | union { | ||
| 94 | binder_uintptr_t pad_binder; | ||
| 95 | __u32 fd; | ||
| 96 | }; | ||
| 97 | |||
| 98 | binder_uintptr_t cookie; | ||
| 99 | }; | ||
| 100 | |||
| 101 | /* struct binder_buffer_object - object describing a userspace buffer | ||
| 102 | * @hdr: common header structure | ||
| 103 | * @flags: one or more BINDER_BUFFER_* flags | ||
| 104 | * @buffer: address of the buffer | ||
| 105 | * @length: length of the buffer | ||
| 106 | * @parent: index in offset array pointing to parent buffer | ||
| 107 | * @parent_offset: offset in @parent pointing to this buffer | ||
| 108 | * | ||
| 109 | * A binder_buffer object represents an object that the | ||
| 110 | * binder kernel driver can copy verbatim to the target | ||
| 111 | * address space. A buffer itself may be pointed to from | ||
| 112 | * within another buffer, meaning that the pointer inside | ||
| 113 | * that other buffer needs to be fixed up as well. This | ||
| 114 | * can be done by setting the BINDER_BUFFER_FLAG_HAS_PARENT | ||
| 115 | * flag in @flags, by setting @parent buffer to the index | ||
| 116 | * in the offset array pointing to the parent binder_buffer_object, | ||
| 117 | * and by setting @parent_offset to the offset in the parent buffer | ||
| 118 | * at which the pointer to this buffer is located. | ||
| 119 | */ | ||
| 120 | struct binder_buffer_object { | ||
| 121 | struct binder_object_header hdr; | ||
| 122 | __u32 flags; | ||
| 123 | binder_uintptr_t buffer; | ||
| 124 | binder_size_t length; | ||
| 125 | binder_size_t parent; | ||
| 126 | binder_size_t parent_offset; | ||
| 127 | }; | ||
| 128 | |||
| 129 | enum { | ||
| 130 | BINDER_BUFFER_FLAG_HAS_PARENT = 0x01, | ||
| 131 | }; | ||
| 132 | |||
| 133 | /* struct binder_fd_array_object - object describing an array of fds in a buffer | ||
| 134 | * @hdr: common header structure | ||
| 135 | * @num_fds: number of file descriptors in the buffer | ||
| 136 | * @parent: index in offset array to buffer holding the fd array | ||
| 137 | * @parent_offset: start offset of fd array in the buffer | ||
| 138 | * | ||
| 139 | * A binder_fd_array object represents an array of file | ||
| 140 | * descriptors embedded in a binder_buffer_object. It is | ||
| 141 | * different from a regular binder_buffer_object because it | ||
| 142 | * describes a list of file descriptors to fix up, not an opaque | ||
| 143 | * blob of memory, and hence the kernel needs to treat it differently. | ||
| 144 | * | ||
| 145 | * An example of how this would be used is with Android's | ||
| 146 | * native_handle_t object, which is a struct with a list of integers | ||
| 147 | * and a list of file descriptors. The native_handle_t struct itself | ||
| 148 | * will be represented by a struct binder_buffer_objct, whereas the | ||
| 149 | * embedded list of file descriptors is represented by a | ||
| 150 | * struct binder_fd_array_object with that binder_buffer_object as | ||
| 151 | * a parent. | ||
| 152 | */ | ||
| 153 | struct binder_fd_array_object { | ||
| 154 | struct binder_object_header hdr; | ||
| 155 | binder_size_t num_fds; | ||
| 156 | binder_size_t parent; | ||
| 157 | binder_size_t parent_offset; | ||
| 158 | }; | ||
| 159 | |||
| 73 | /* | 160 | /* |
| 74 | * On 64-bit platforms where user code may run in 32-bits the driver must | 161 | * On 64-bit platforms where user code may run in 32-bits the driver must |
| 75 | * translate the buffer (and local binder) addresses appropriately. | 162 | * translate the buffer (and local binder) addresses appropriately. |
| @@ -162,6 +249,11 @@ struct binder_transaction_data { · 86 unmodified lines | |||
| 162 | } data; | 249 | } data; |
| 163 | }; | 250 | }; |
| 164 | 251 | ||
| 252 | struct binder_transaction_data_sg { | ||
| 253 | struct binder_transaction_data transaction_data; | ||
| 254 | binder_size_t buffers_size; | ||
| 255 | }; | ||
| 256 | |||
| 165 | struct binder_ptr_cookie { | 257 | struct binder_ptr_cookie { |
| 166 | binder_uintptr_t ptr; | 258 | binder_uintptr_t ptr; |
| 167 | binder_uintptr_t cookie; | 259 | binder_uintptr_t cookie; |
| @@ -346,6 +438,12 @@ enum binder_driver_command_protocol { · 178 unmodified lines | |||
| 346 | /* | 438 | /* |
| 347 | * void *: cookie | 439 | * void *: cookie |
| 348 | */ | 440 | */ |
| 441 | |||
| 442 | BC_TRANSACTION_SG = _IOW('c', 17, struct binder_transaction_data_sg), | ||
| 443 | BC_REPLY_SG = _IOW('c', 18, struct binder_transaction_data_sg), | ||
| 444 | /* | ||
| 445 | * binder_transaction_data_sg: the sent command. | ||
| 446 | */ | ||
| 349 | }; | 447 | }; |
| 350 | 448 | ||
| 351 | #endif /* _UAPI_LINUX_BINDER_H */ | 449 | #endif /* _UAPI_LINUX_BINDER_H */ |