Lines Matching refs:region

10 #include <linux/fpga/fpga-region.h>
36  * fpga_region_get - get an exclusive reference to an fpga region
37  * @region: FPGA Region struct
39  * Caller should call fpga_region_put() when done with region.
43  * * -EBUSY if someone already has a reference to the region.
46 static struct fpga_region *fpga_region_get(struct fpga_region *region)
48 	struct device *dev = &region->dev;
50 	if (!mutex_trylock(&region->mutex)) {
58 		mutex_unlock(&region->mutex);
64 	return region;
68  * fpga_region_put - release a reference to a region
70  * @region: FPGA region
72 static void fpga_region_put(struct fpga_region *region)
74 	struct device *dev = &region->dev;
80 	mutex_unlock(&region->mutex);
86  * @region: FPGA region
88  * Program an FPGA using fpga image info (region->info).
89  * If the region has a get_bridges function, the exclusive reference for the
91  * reprogramming the region until the caller considers it safe to do so.
93  * reprogram the region.
97 int fpga_region_program_fpga(struct fpga_region *region)
99 	struct device *dev = &region->dev;
100 	struct fpga_image_info *info = region->info;
103 	region = fpga_region_get(region);
104 	if (IS_ERR(region)) {
105 		dev_err(dev, "failed to get FPGA region\n");
106 		return PTR_ERR(region);
109 	ret = fpga_mgr_lock(region->mgr);
117 	 * fpga region struct.  Or we don't have any bridges.
119 	if (region->get_bridges) {
120 		ret = region->get_bridges(region);
122 			dev_err(dev, "failed to get fpga region bridges\n");
127 	ret = fpga_bridges_disable(&region->bridge_list);
133 	ret = fpga_mgr_load(region->mgr, info);
139 	ret = fpga_bridges_enable(&region->bridge_list);
141 		dev_err(dev, "failed to enable region bridges\n");
145 	fpga_mgr_unlock(region->mgr);
146 	fpga_region_put(region);
151 	if (region->get_bridges)
152 		fpga_bridges_put(&region->bridge_list);
154 	fpga_mgr_unlock(region->mgr);
156 	fpga_region_put(region);
165 	struct fpga_region *region = to_fpga_region(dev);
167 	if (!region->compat_id)
171 		       (unsigned long long)region->compat_id->id_h,
172 		       (unsigned long long)region->compat_id->id_l);
193 	struct fpga_region *region;
202 	region = kzalloc(sizeof(*region), GFP_KERNEL);
203 	if (!region)
212 	region->mgr = info->mgr;
213 	region->compat_id = info->compat_id;
214 	region->priv = info->priv;
215 	region->get_bridges = info->get_bridges;
217 	mutex_init(&region->mutex);
218 	INIT_LIST_HEAD(&region->bridge_list);
220 	region->dev.class = &fpga_region_class;
221 	region->dev.parent = parent;
222 	region->dev.of_node = parent->of_node;
223 	region->dev.id = id;
225 	ret = dev_set_name(&region->dev, "region%d", id);
229 	ret = device_register(&region->dev);
231 		put_device(&region->dev);
235 	return region;
240 	kfree(region);
249  * @mgr: manager that programs this region
272  * fpga_region_unregister - unregister an FPGA region
273  * @region: FPGA region
275  * This function is intended for use in an FPGA region driver's remove function.
277 void fpga_region_unregister(struct fpga_region *region)
279 	device_unregister(&region->dev);
285 	struct fpga_region *region = to_fpga_region(dev);
287 	ida_free(&fpga_region_ida, region->dev.id);
288 	kfree(region);