soc/fsl/qbman: Add common routine for QBMan private allocations

obj-$(CONFIG_FSL_DPAA)                          += bman_ccsr.o qman_ccsr.o \

						   bman_portal.o qman_portal.o \

						   bman.o qman.o

						   bman.o qman.o dpaa_sys.o

obj-$(CONFIG_FSL_BMAN_TEST)                     += bman-test.o

bman-test-y                                      = bman_test.o

/* 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

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 * 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, dma_addr_t *addr,

				size_t *size)

{

	int ret;

	struct device_node *mem_node;

	u64 size64;

	ret = of_reserved_mem_device_init_by_idx(dev, dev->of_node, idx);

	if (ret) {

		dev_err(dev,

			"of_reserved_mem_device_init_by_idx(%d) failed 0x%x\n",

			idx, ret);

		return -ENODEV;

	}

	mem_node = of_parse_phandle(dev->of_node, "memory-region", 0);

	if (mem_node) {

		ret = of_property_read_u64(mem_node, "size", &size64);

		if (ret) {

			dev_err(dev, "of_address_to_resource fails 0x%x\n",

			        ret);

			return -ENODEV;

		}

		*size = size64;

	} else {

		dev_err(dev, "No memory-region found for index %d\n", idx);

		return -ENODEV;

	}

	if (!dma_zalloc_coherent(dev, *size, addr, 0)) {

		dev_err(dev, "DMA Alloc memory failed\n");

		return -ENODEV;

	}

	/*

	 * Disassociate the reserved memory area from the device

	 * because a device can only have one DMA memory area. This

	 * should be fine since the memory is allocated and initialized

	 * and only ever accessed by the QBMan device from now on

	 */

	of_reserved_mem_device_release(dev);

	return 0;

}

/* Offset applied to genalloc pools due to zero being an error return */

#define DPAA_GENALLOC_OFF	0x80000000

/* Initialize the devices private memory region */

int qbman_init_private_mem(struct device *dev, int idx, dma_addr_t *addr,

				size_t *size);

#endif	/* __DPAA_SYS_H */