1 /* SPDX-License-Identifier: GPL-2.0-only OR MIT */
2 /* Copyright (c) 2023 Imagination Technologies Ltd. */
7 #include "linux/compiler_attributes.h"
8 #include <uapi/drm/pvr_drm.h>
10 #define PVR_DRIVER_NAME "powervr"
11 #define PVR_DRIVER_DESC "Imagination PowerVR (Series 6 and later) & IMG Graphics"
14 * Driver interface version:
15 * - 1.0: Initial interface
17 #define PVR_DRIVER_MAJOR 1
18 #define PVR_DRIVER_MINOR 0
19 #define PVR_DRIVER_PATCHLEVEL 0
21 int pvr_get_uobj(u64 usr_ptr, u32 usr_size, u32 min_size, u32 obj_size, void *out);
22 int pvr_set_uobj(u64 usr_ptr, u32 usr_size, u32 min_size, u32 obj_size, const void *in);
23 int pvr_get_uobj_array(const struct drm_pvr_obj_array *in, u32 min_stride, u32 obj_size,
25 int pvr_set_uobj_array(const struct drm_pvr_obj_array *out, u32 min_stride, u32 obj_size,
28 #define PVR_UOBJ_MIN_SIZE_INTERNAL(_typename, _last_mandatory_field) \
29 (offsetof(_typename, _last_mandatory_field) + \
30 sizeof(((_typename *)NULL)->_last_mandatory_field))
32 /* NOLINTBEGIN(bugprone-macro-parentheses) */
33 #define PVR_UOBJ_DECL(_typename, _last_mandatory_field) \
34 , _typename : PVR_UOBJ_MIN_SIZE_INTERNAL(_typename, _last_mandatory_field)
35 /* NOLINTEND(bugprone-macro-parentheses) */
38 * DOC: PVR user objects.
40 * Macros used to aid copying structured and array data to and from
41 * userspace. Objects can differ in size, provided the minimum size
42 * allowed is specified (using the last mandatory field in the struct).
43 * All types used with PVR_UOBJ_GET/SET macros must be listed here under
44 * PVR_UOBJ_MIN_SIZE, with the last mandatory struct field specified.
48 * PVR_UOBJ_MIN_SIZE() - Fetch the minimum copy size of a compatible type object.
49 * @_obj_name: The name of the object. Cannot be a typename - this is deduced.
51 * This cannot fail. Using the macro with an incompatible type will result in a
54 * To add compatibility for a type, list it within the macro in an orderly
55 * fashion. The second argument is the name of the last mandatory field of the
56 * struct type, which is used to calculate the size. See also PVR_UOBJ_DECL().
58 * Return: The minimum copy size.
60 #define PVR_UOBJ_MIN_SIZE(_obj_name) _Generic(_obj_name \
61 PVR_UOBJ_DECL(struct drm_pvr_job, hwrt) \
62 PVR_UOBJ_DECL(struct drm_pvr_sync_op, value) \
63 PVR_UOBJ_DECL(struct drm_pvr_dev_query_gpu_info, num_phantoms) \
64 PVR_UOBJ_DECL(struct drm_pvr_dev_query_runtime_info, cdm_max_local_mem_size_regs) \
65 PVR_UOBJ_DECL(struct drm_pvr_dev_query_quirks, _padding_c) \
66 PVR_UOBJ_DECL(struct drm_pvr_dev_query_enhancements, _padding_c) \
67 PVR_UOBJ_DECL(struct drm_pvr_heap, page_size_log2) \
68 PVR_UOBJ_DECL(struct drm_pvr_dev_query_heap_info, heaps) \
69 PVR_UOBJ_DECL(struct drm_pvr_static_data_area, offset) \
70 PVR_UOBJ_DECL(struct drm_pvr_dev_query_static_data_areas, static_data_areas) \
74 * PVR_UOBJ_GET() - Copies from _src_usr_ptr to &_dest_obj.
75 * @_dest_obj: The destination container object in kernel space.
76 * @_usr_size: The size of the source container in user space.
77 * @_src_usr_ptr: __u64 raw pointer to the source container in user space.
79 * Return: Error code. See pvr_get_uobj().
81 #define PVR_UOBJ_GET(_dest_obj, _usr_size, _src_usr_ptr) \
82 pvr_get_uobj(_src_usr_ptr, _usr_size, \
83 PVR_UOBJ_MIN_SIZE(_dest_obj), \
84 sizeof(_dest_obj), &(_dest_obj))
87 * PVR_UOBJ_SET() - Copies from &_src_obj to _dest_usr_ptr.
88 * @_dest_usr_ptr: __u64 raw pointer to the destination container in user space.
89 * @_usr_size: The size of the destination container in user space.
90 * @_src_obj: The source container object in kernel space.
92 * Return: Error code. See pvr_set_uobj().
94 #define PVR_UOBJ_SET(_dest_usr_ptr, _usr_size, _src_obj) \
95 pvr_set_uobj(_dest_usr_ptr, _usr_size, \
96 PVR_UOBJ_MIN_SIZE(_src_obj), \
97 sizeof(_src_obj), &(_src_obj))
100 * PVR_UOBJ_GET_ARRAY() - Copies from @_src_drm_pvr_obj_array.array to
101 * alloced memory and returns a pointer in _dest_array.
102 * @_dest_array: The destination C array object in kernel space.
103 * @_src_drm_pvr_obj_array: The &struct drm_pvr_obj_array containing a __u64 raw
104 * pointer to the source C array in user space and the size of each array
105 * element in user space (the 'stride').
107 * Return: Error code. See pvr_get_uobj_array().
109 #define PVR_UOBJ_GET_ARRAY(_dest_array, _src_drm_pvr_obj_array) \
110 pvr_get_uobj_array(_src_drm_pvr_obj_array, \
111 PVR_UOBJ_MIN_SIZE((_dest_array)[0]), \
112 sizeof((_dest_array)[0]), (void **)&(_dest_array))
115 * PVR_UOBJ_SET_ARRAY() - Copies from _src_array to @_dest_drm_pvr_obj_array.array.
116 * @_dest_drm_pvr_obj_array: The &struct drm_pvr_obj_array containing a __u64 raw
117 * pointer to the destination C array in user space and the size of each array
118 * element in user space (the 'stride').
119 * @_src_array: The source C array object in kernel space.
121 * Return: Error code. See pvr_set_uobj_array().
123 #define PVR_UOBJ_SET_ARRAY(_dest_drm_pvr_obj_array, _src_array) \
124 pvr_set_uobj_array(_dest_drm_pvr_obj_array, \
125 PVR_UOBJ_MIN_SIZE((_src_array)[0]), \
126 sizeof((_src_array)[0]), _src_array)
128 #endif /* PVR_DRV_H */