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117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
#include <machine/rtems-bsd-kernel-space.h>
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#include <rtems/bsd/local/opt_dpaa.h>
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/*
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* Copyright 2008-2015 Freescale Semiconductor Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Freescale Semiconductor nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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*
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* ALTERNATIVELY, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") as published by the Free Software
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* Foundation, either version 2 of that License or (at your option) any
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* later version.
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*
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* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "../../../linux/drivers/net/ethernet/freescale/fman/fman_muram.h"
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <stdlib.h>
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#include <rtems/score/heapimpl.h>
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#define MURAM_LOCK(x) (mtx_lock(&(x)->mtx))
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#define MURAM_UNLOCK(x) (mtx_unlock(&(x)->mtx))
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struct muram_info {
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struct mtx mtx;
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Heap_Control heap;
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unsigned long base;
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};
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static unsigned long
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fman_muram_vbase_to_offset(struct muram_info *muram, unsigned long addr)
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{
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return (addr - muram->base);
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}
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struct muram_info *fman_muram_init(phys_addr_t base, size_t size)
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{
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struct muram_info *muram;
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uintptr_t s;
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muram = malloc(sizeof(*muram));
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if (muram == NULL)
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return (NULL);
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muram->base = (unsigned long)base;
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memset((void *)muram->base, 0xab, size);
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s = _Heap_Initialize(&muram->heap, (void *)(uintptr_t)base, size, 64);
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if (s == 0) {
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free(muram);
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return (NULL);
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}
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mtx_init(&muram->mtx, "FMan MURAM", NULL, MTX_DEF);
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return (muram);
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}
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unsigned long
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fman_muram_offset_to_vbase(struct muram_info *muram, unsigned long offset)
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{
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return (offset + muram->base);
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}
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unsigned long
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fman_muram_alloc(struct muram_info *muram, size_t size)
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{
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void *p;
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MURAM_LOCK(muram);
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p = _Heap_Allocate(&muram->heap, size);
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MURAM_UNLOCK(muram);
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if (p == NULL)
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return -ENOMEM;
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memset(p, 0, size);
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return (fman_muram_vbase_to_offset(muram, (unsigned long)p));
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}
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void
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fman_muram_free_mem(struct muram_info *muram, unsigned long offset, size_t size)
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{
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void *p = (void *)fman_muram_offset_to_vbase(muram, offset);
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MURAM_LOCK(muram);
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_Heap_Free(&muram->heap, p);
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MURAM_UNLOCK(muram);
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}
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