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 */ 105