drivers/soc/fsl/qbman/dpaa_sys.h

   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/vmalloc.h>
  40 #include <linux/platform_device.h>
  41 #include <linux/of.h>
  42 #include <linux/of_reserved_mem.h>
  43 #include <linux/prefetch.h>
  44 #include <linux/genalloc.h>
  45 #include <asm/cacheflush.h>
  46
  47 /* For 2-element tables related to cache-inhibited and cache-enabled mappings */
  48 #define DPAA_PORTAL_CE 0
  49 #define DPAA_PORTAL_CI 1
  50
  51 #if (L1_CACHE_BYTES != 32) && (L1_CACHE_BYTES != 64)
  52 #error "Unsupported Cacheline Size"
  53 #endif
  54
  55 static inline void dpaa_flush(void *p)
  56 {
  57 #ifdef CONFIG_PPC
  58         flush_dcache_range((unsigned long)p, (unsigned long)p+64);
  59 #elif defined(CONFIG_ARM32)
  60         __cpuc_flush_dcache_area(p, 64);
  61 #elif defined(CONFIG_ARM64)
  62         __flush_dcache_area(p, 64);
  63 #endif
  64 }
  65
  66 #define dpaa_invalidate(p) dpaa_flush(p)
  67
  68 #define dpaa_zero(p) memset(p, 0, 64)
  69
  70 static inline void dpaa_touch_ro(void *p)
  71 {
  72 #if (L1_CACHE_BYTES == 32)
  73         prefetch(p+32);
  74 #endif
  75         prefetch(p);
  76 }
  77
  78 /* Commonly used combo */
  79 static inline void dpaa_invalidate_touch_ro(void *p)
  80 {
  81         dpaa_invalidate(p);
  82         dpaa_touch_ro(p);
  83 }
  84
  85
  86 #ifdef CONFIG_FSL_DPAA_CHECKING
  87 #define DPAA_ASSERT(x) WARN_ON(!(x))
  88 #else
  89 #define DPAA_ASSERT(x)
  90 #endif
  91
  92 /* cyclic helper for rings */
  93 static inline u8 dpaa_cyc_diff(u8 ringsize, u8 first, u8 last)
  94 {
  95         /* 'first' is included, 'last' is excluded */
  96         if (first <= last)
  97                 return last - first;
  98         return ringsize + last - first;
  99 }
 100
 101 /* Offset applied to genalloc pools due to zero being an error return */
 102 #define DPAA_GENALLOC_OFF       0x80000000
 103
 104 #endif  /* __DPAA_SYS_H */