LXR linux/drivers/soc/fsl/qbman/dpaa

   1/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
   2 *
   3 * Redistribution and use in source and binary forms, with or without
   4 * modification, are permitted provided that the following conditions are met:
   5 *     * Redistributions of source code must retain the above copyright
   6 *       notice, this list of conditions and the following disclaimer.
   7 *     * Redistributions in binary form must reproduce the above copyright
   8 *       notice, this list of conditions and the following disclaimer in the
   9 *       documentation and/or other materials provided with the distribution.
  10 *     * Neither the name of Freescale Semiconductor nor the
  11 *       names of its contributors may be used to endorse or promote products
  12 *       derived from this software without specific prior written permission.
  13 *
  14 * ALTERNATIVELY, this software may be distributed under the terms of the
  15 * GNU General Public License ("GPL") as published by the Free Software
  16 * Foundation, either version 2 of that License or (at your option) any
  17 * later version.
  18 *
  19 * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
  20 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22 * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
  23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  26 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29 */
  30
  31#ifndef __DPAA_SYS_H
  32#define __DPAA_SYS_H
  33
  34#include <linux/cpu.h>
  35#include <linux/slab.h>
  36#include <linux/module.h>
  37#include <linux/interrupt.h>
  38#include <linux/kthread.h>
  39#include <linux/sched/signal.h>
  40#include <linux/vmalloc.h>
  41#include <linux/platform_device.h>
  42#include <linux/of.h>
  43#include <linux/of_reserved_mem.h>
  44#include <linux/prefetch.h>
  45#include <linux/genalloc.h>
  46#include <asm/cacheflush.h>
  47
  48/* For 2-element tables related to cache-inhibited and cache-enabled mappings */
  49#define DPAA_PORTAL_CE 0
  50#define DPAA_PORTAL_CI 1
  51
  52#if (L1_CACHE_BYTES != 32) && (L1_CACHE_BYTES != 64)
  53#error "Unsupported Cacheline Size"
  54#endif
  55
  56static inline void dpaa_flush(void *p)
  57{
  58#ifdef CONFIG_PPC
  59        flush_dcache_range((unsigned long)p, (unsigned long)p+64);
  60#elif defined(CONFIG_ARM32)
  61        __cpuc_flush_dcache_area(p, 64);
  62#elif defined(CONFIG_ARM64)
  63        __flush_dcache_area(p, 64);
  64#endif
  65}
  66
  67#define dpaa_invalidate(p) dpaa_flush(p)
  68
  69#define dpaa_zero(p) memset(p, 0, 64)
  70
  71static inline void dpaa_touch_ro(void *p)
  72{
  73#if (L1_CACHE_BYTES == 32)
  74        prefetch(p+32);
  75#endif
  76        prefetch(p);
  77}
  78
  79/* Commonly used combo */
  80static inline void dpaa_invalidate_touch_ro(void *p)
  81{
  82        dpaa_invalidate(p);
  83        dpaa_touch_ro(p);
  84}
  85
  86
  87#ifdef CONFIG_FSL_DPAA_CHECKING
  88#define DPAA_ASSERT(x) WARN_ON(!(x))
  89#else
  90#define DPAA_ASSERT(x)
  91#endif
  92
  93/* cyclic helper for rings */
  94static inline u8 dpaa_cyc_diff(u8 ringsize, u8 first, u8 last)
  95{
  96        /* 'first' is included, 'last' is excluded */
  97        if (first <= last)
  98                return last - first;
  99        return ringsize + last - first;
 100}
 101
 102/* Offset applied to genalloc pools due to zero being an error return */
 103#define DPAA_GENALLOC_OFF       0x80000000
 104
 105#endif  /* __DPAA_SYS_H */
 106