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.
42  * @region_index: region index.
43  * @region_size: region size.
44  * @phys: region's physical address of this region.
45  * @flags: region flags (access permission).
52 	struct dfl_afu_mmio_region *region;  in afu_mmio_region_add()  local
56 	region = devm_kzalloc(&pdata->dev->dev, sizeof(*region), GFP_KERNEL);  in afu_mmio_region_add()
57 	if (!region)  in afu_mmio_region_add()
60 	region->index = region_index;  in afu_mmio_region_add()
61 	region->size = region_size;  in afu_mmio_region_add()
62 	region->phys = phys;  in afu_mmio_region_add()
63 	region->flags = flags;  in afu_mmio_region_add()
77 	region->offset = afu->region_cur_offset;  in afu_mmio_region_add()
78 	list_add(&region->node, &afu->regions);  in afu_mmio_region_add()
87 	devm_kfree(&pdata->dev->dev, region);  in afu_mmio_region_add()
98 	struct dfl_afu_mmio_region *tmp, *region;  in afu_mmio_region_destroy()  local
100 	list_for_each_entry_safe(region, tmp, &afu->regions, node)  in afu_mmio_region_destroy()
101 		devm_kfree(&pdata->dev->dev, region);  in afu_mmio_region_destroy()
105  * afu_mmio_region_get_by_index - find an afu region by index.
107  * @region_index: region index.
108  * @pregion: ptr to region for result.
116 	struct dfl_afu_mmio_region *region;  in afu_mmio_region_get_by_index()  local
122 	region = get_region_by_index(afu, region_index);  in afu_mmio_region_get_by_index()
123 	if (!region) {  in afu_mmio_region_get_by_index()
127 	*pregion = *region;  in afu_mmio_region_get_by_index()
134  * afu_mmio_region_get_by_offset - find an afu mmio region by offset and size
137  * @offset: region offset from start of the device fd.
138  * @size: region size.
139  * @pregion: ptr to region for result.
141  * Find the region which fully contains the region described by input
142  * parameters (offset and size) from the feature dev's region linked list.
150 	struct dfl_afu_mmio_region *region;  in afu_mmio_region_get_by_offset()  local
156 	for_each_region(region, afu)  in afu_mmio_region_get_by_offset()
157 		if (region->offset <= offset &&  in afu_mmio_region_get_by_offset()
158 		    region->offset + region->size >= offset + size) {  in afu_mmio_region_get_by_offset()
159 			*pregion = *region;  in afu_mmio_region_get_by_offset()