3  * Driver for FPGA Accelerated Function Unit (AFU) MMIO Region Management
14  * afu_mmio_region_init - init function for afu mmio region support
24 #define for_each_region(region, afu)	\  argument
25 	list_for_each_entry((region), &(afu)->regions, node)
30 	struct dfl_afu_mmio_region *region;  in get_region_by_index()  local
32 	for_each_region(region, afu)  in get_region_by_index()
33 		if (region->index == region_index)  in get_region_by_index()
34 			return region;  in get_region_by_index()
40  * afu_mmio_region_add - add a mmio region to given feature dev.
43  * @region_index: region index.
44  * @region_size: region size.
45  * @phys: region's physical address of this region.
46  * @flags: region flags (access permission).
53 	struct dfl_afu_mmio_region *region;  in afu_mmio_region_add()  local
57 	region = devm_kzalloc(&pdata->dev->dev, sizeof(*region), GFP_KERNEL);  in afu_mmio_region_add()
58 	if (!region)  in afu_mmio_region_add()
61 	region->index = region_index;  in afu_mmio_region_add()
62 	region->size = region_size;  in afu_mmio_region_add()
63 	region->phys = phys;  in afu_mmio_region_add()
64 	region->flags = flags;  in afu_mmio_region_add()
78 	region->offset = afu->region_cur_offset;  in afu_mmio_region_add()
79 	list_add(&region->node, &afu->regions);  in afu_mmio_region_add()
88 	devm_kfree(&pdata->dev->dev, region);  in afu_mmio_region_add()
99 	struct dfl_afu_mmio_region *tmp, *region;  in afu_mmio_region_destroy()  local
101 	list_for_each_entry_safe(region, tmp, &afu->regions, node)  in afu_mmio_region_destroy()
102 		devm_kfree(&pdata->dev->dev, region);  in afu_mmio_region_destroy()
106  * afu_mmio_region_get_by_index - find an afu region by index.
108  * @region_index: region index.
109  * @pregion: ptr to region for result.
117 	struct dfl_afu_mmio_region *region;  in afu_mmio_region_get_by_index()  local
123 	region = get_region_by_index(afu, region_index);  in afu_mmio_region_get_by_index()
124 	if (!region) {  in afu_mmio_region_get_by_index()
128 	*pregion = *region;  in afu_mmio_region_get_by_index()
135  * afu_mmio_region_get_by_offset - find an afu mmio region by offset and size
138  * @offset: region offset from start of the device fd.
139  * @size: region size.
140  * @pregion: ptr to region for result.
142  * Find the region which fully contains the region described by input
143  * parameters (offset and size) from the feature dev's region linked list.
151 	struct dfl_afu_mmio_region *region;  in afu_mmio_region_get_by_offset()  local
157 	for_each_region(region, afu)  in afu_mmio_region_get_by_offset()
158 		if (region->offset <= offset &&  in afu_mmio_region_get_by_offset()
159 		    region->offset + region->size >= offset + size) {  in afu_mmio_region_get_by_offset()
160 			*pregion = *region;  in afu_mmio_region_get_by_offset()