linux/drivers/soc/fsl/qe/qe_common.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Common CPM code
 *
 * Author: Scott Wood <scottwood@freescale.com>
 *
 * Copyright 2007-2008,2010 Freescale Semiconductor, Inc.
 *
 * Some parts derived from commproc.c/cpm2_common.c, which is:
 * Copyright (c) 1997 Dan error_act (dmalek@jlc.net)
 * Copyright (c) 1999-2001 Dan Malek <dan@embeddedalley.com>
 * Copyright (c) 2000 MontaVista Software, Inc (source@mvista.com)
 * 2006 (c) MontaVista Software, Inc.
 * Vitaly Bordug <vbordug@ru.mvista.com>
 */
#include <linux/genalloc.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/export.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <soc/fsl/qe/qe.h>

static struct gen_pool *muram_pool;
static DEFINE_SPINLOCK(cpm_muram_lock);
static void __iomem *muram_vbase;
static phys_addr_t muram_pbase;

struct muram_block {};

static LIST_HEAD(muram_block_list);

/* max address size we deal with */
#define OF_MAX_ADDR_CELLS
#define GENPOOL_OFFSET

int cpm_muram_init(void)
{}

/*
 * cpm_muram_alloc_common - cpm_muram_alloc common code
 * @size: number of bytes to allocate
 * @algo: algorithm for alloc.
 * @data: data for genalloc's algorithm.
 *
 * This function returns a non-negative offset into the muram area, or
 * a negative errno on failure.
 */
static s32 cpm_muram_alloc_common(unsigned long size,
				  genpool_algo_t algo, void *data)
{}

/*
 * cpm_muram_alloc - allocate the requested size worth of multi-user ram
 * @size: number of bytes to allocate
 * @align: requested alignment, in bytes
 *
 * This function returns a non-negative offset into the muram area, or
 * a negative errno on failure.
 * Use cpm_muram_addr() to get the virtual address of the area.
 * Use cpm_muram_free() to free the allocation.
 */
s32 cpm_muram_alloc(unsigned long size, unsigned long align)
{}
EXPORT_SYMBOL();

/**
 * cpm_muram_free - free a chunk of multi-user ram
 * @offset: The beginning of the chunk as returned by cpm_muram_alloc().
 */
void cpm_muram_free(s32 offset)
{}
EXPORT_SYMBOL();

/*
 * cpm_muram_alloc_fixed - reserve a specific region of multi-user ram
 * @offset: offset of allocation start address
 * @size: number of bytes to allocate
 * This function returns @offset if the area was available, a negative
 * errno otherwise.
 * Use cpm_muram_addr() to get the virtual address of the area.
 * Use cpm_muram_free() to free the allocation.
 */
s32 cpm_muram_alloc_fixed(unsigned long offset, unsigned long size)
{}
EXPORT_SYMBOL();

/**
 * cpm_muram_addr - turn a muram offset into a virtual address
 * @offset: muram offset to convert
 */
void __iomem *cpm_muram_addr(unsigned long offset)
{}
EXPORT_SYMBOL();

unsigned long cpm_muram_offset(const void __iomem *addr)
{}
EXPORT_SYMBOL();

/**
 * cpm_muram_dma - turn a muram virtual address into a DMA address
 * @addr: virtual address from cpm_muram_addr() to convert
 */
dma_addr_t cpm_muram_dma(void __iomem *addr)
{}
EXPORT_SYMBOL();

/*
 * As cpm_muram_free, but takes the virtual address rather than the
 * muram offset.
 */
void cpm_muram_free_addr(const void __iomem *addr)
{}
EXPORT_SYMBOL();