Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Roy Pledge | 299 | 91.72% | 3 | 60.00% |
Rob Herring | 27 | 8.28% | 2 | 40.00% |
Total | 326 | 5 |
/* Copyright 2017 NXP Semiconductor, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the name of NXP Semiconductor nor the * names of its contributors may be used to endorse or promote products * derived from this software without specific prior written permission. * * ALTERNATIVELY, this software may be distributed under the terms of the * GNU General Public License ("GPL") as published by the Free Software * Foundation, either version 2 of that License or (at your option) any * later version. * * THIS SOFTWARE IS PROVIDED BY NXP Semiconductor ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NXP Semiconductor BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <linux/dma-mapping.h> #include "dpaa_sys.h" /* * Initialize a devices private memory region */ int qbman_init_private_mem(struct device *dev, int idx, const char *compat, dma_addr_t *addr, size_t *size) { struct device_node *mem_node; struct reserved_mem *rmem; int err; __be32 *res_array; mem_node = of_parse_phandle(dev->of_node, "memory-region", idx); if (!mem_node) { mem_node = of_find_compatible_node(NULL, NULL, compat); if (!mem_node) { dev_err(dev, "No memory-region found for index %d or compatible '%s'\n", idx, compat); return -ENODEV; } } rmem = of_reserved_mem_lookup(mem_node); if (!rmem) { dev_err(dev, "of_reserved_mem_lookup() returned NULL\n"); return -ENODEV; } *addr = rmem->base; *size = rmem->size; /* * Check if the reg property exists - if not insert the node * so upon kexec() the same memory region address will be preserved. * This is needed because QBMan HW does not allow the base address/ * size to be modified once set. */ if (!of_property_present(mem_node, "reg")) { struct property *prop; prop = devm_kzalloc(dev, sizeof(*prop), GFP_KERNEL); if (!prop) return -ENOMEM; prop->value = res_array = devm_kzalloc(dev, sizeof(__be32) * 4, GFP_KERNEL); if (!prop->value) return -ENOMEM; res_array[0] = cpu_to_be32(upper_32_bits(*addr)); res_array[1] = cpu_to_be32(lower_32_bits(*addr)); res_array[2] = cpu_to_be32(upper_32_bits(*size)); res_array[3] = cpu_to_be32(lower_32_bits(*size)); prop->length = sizeof(__be32) * 4; prop->name = devm_kstrdup(dev, "reg", GFP_KERNEL); if (!prop->name) return -ENOMEM; err = of_add_property(mem_node, prop); if (err) return err; } return 0; }
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