Lines Matching +full:fpga +full:- +full:region

1 // SPDX-License-Identifier: GPL-2.0
3  * Driver for FPGA Accelerated Function Unit (AFU) MMIO Region Management
5  * Copyright (C) 2017-2018 Intel Corporation, Inc.
11 #include "dfl-afu.h"
14  * afu_mmio_region_init - init function for afu mmio region support
21 	INIT_LIST_HEAD(&afu->regions);
24 #define for_each_region(region, afu)	\
25 	list_for_each_entry((region), &(afu)->regions, node)
30 	struct dfl_afu_mmio_region *region;
32 	for_each_region(region, afu)
33 		if (region->index == region_index)
34 			return region;
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 device *dev = &fdata->dev->dev;
54 	struct dfl_afu_mmio_region *region;
58 	region = devm_kzalloc(dev, sizeof(*region), GFP_KERNEL);
59 	if (!region)
60 		return -ENOMEM;
62 	region->index = region_index;
63 	region->size = region_size;
64 	region->phys = phys;
65 	region->flags = flags;
67 	mutex_lock(&fdata->lock);
73 		mutex_unlock(&fdata->lock);
74 		ret = -EEXIST;
79 	region->offset = afu->region_cur_offset;
80 	list_add(&region->node, &afu->regions);
82 	afu->region_cur_offset += region_size;
83 	afu->num_regions++;
84 	mutex_unlock(&fdata->lock);
89 	devm_kfree(dev, region);
94  * afu_mmio_region_destroy - destroy all mmio regions under given feature dev.
100 	struct dfl_afu_mmio_region *tmp, *region;
102 	list_for_each_entry_safe(region, tmp, &afu->regions, node)
103 		devm_kfree(&fdata->dev->dev, region);
107  * afu_mmio_region_get_by_index - find an afu region by index.
109  * @region_index: region index.
110  * @pregion: ptr to region for result.
118 	struct dfl_afu_mmio_region *region;
122 	mutex_lock(&fdata->lock);
124 	region = get_region_by_index(afu, region_index);
125 	if (!region) {
126 		ret = -EINVAL;
129 	*pregion = *region;
131 	mutex_unlock(&fdata->lock);
136  * afu_mmio_region_get_by_offset - find an afu mmio region by offset and size
139  * @offset: region offset from start of the device fd.
140  * @size: region size.
141  * @pregion: ptr to region for result.
143  * Find the region which fully contains the region described by input
144  * parameters (offset and size) from the feature dev's region linked list.
152 	struct dfl_afu_mmio_region *region;
156 	mutex_lock(&fdata->lock);
158 	for_each_region(region, afu)
159 		if (region->offset <= offset &&
160 		    region->offset + region->size >= offset + size) {
161 			*pregion = *region;
164 	ret = -EINVAL;
166 	mutex_unlock(&fdata->lock);