drivers/net/ena/base/ena_plat_dpdk.h

   1 /*-
   2 * BSD LICENSE
   3 *
   4 * Copyright (c) 2015-2016 Amazon.com, Inc. or its affiliates.
   5 * All rights reserved.
   6 *
   7 * Redistribution and use in source and binary forms, with or without
   8 * modification, are permitted provided that the following conditions
   9 * are met:
  10 *
  11 * * Redistributions of source code must retain the above copyright
  12 * notice, this list of conditions and the following disclaimer.
  13 * * Redistributions in binary form must reproduce the above copyright
  14 * notice, this list of conditions and the following disclaimer in
  15 * the documentation and/or other materials provided with the
  16 * distribution.
  17 * * Neither the name of copyright holder nor the names of its
  18 * contributors may be used to endorse or promote products derived
  19 * from this software without specific prior written permission.
  20 *
  21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32 */
  33
  34 #ifndef DPDK_ENA_COM_ENA_PLAT_DPDK_H_
  35 #define DPDK_ENA_COM_ENA_PLAT_DPDK_H_
  36
  37 #include <stdbool.h>
  38 #include <stdlib.h>
  39 #include <pthread.h>
  40 #include <stdint.h>
  41 #include <string.h>
  42 #include <errno.h>
  43
  44 #include <rte_atomic.h>
  45 #include <rte_branch_prediction.h>
  46 #include <rte_cycles.h>
  47 #include <rte_log.h>
  48 #include <rte_malloc.h>
  49 #include <rte_memzone.h>
  50 #include <rte_spinlock.h>
  51
  52 #include <sys/time.h>
  53
  54 typedef uint64_t u64;
  55 typedef uint32_t u32;
  56 typedef uint16_t u16;
  57 typedef uint8_t u8;
  58
  59 typedef uint64_t dma_addr_t;
  60 #ifndef ETIME
  61 #define ETIME ETIMEDOUT
  62 #endif
  63
  64 #define ena_atomic32_t rte_atomic32_t
  65 #define ena_mem_handle_t void *
  66
  67 #define SZ_256 (256)
  68 #define SZ_4K (4096)
  69
  70 #define ENA_COM_OK      0
  71 #define ENA_COM_NO_MEM  -ENOMEM
  72 #define ENA_COM_INVAL   -EINVAL
  73 #define ENA_COM_NO_SPACE        -ENOSPC
  74 #define ENA_COM_NO_DEVICE       -ENODEV
  75 #define ENA_COM_PERMISSION      -EPERM
  76 #define ENA_COM_TIMER_EXPIRED   -ETIME
  77 #define ENA_COM_FAULT   -EFAULT
  78
  79 #define ____cacheline_aligned __rte_cache_aligned
  80
  81 #define ENA_ABORT() abort()
  82
  83 #define ENA_MSLEEP(x) rte_delay_ms(x)
  84 #define ENA_UDELAY(x) rte_delay_us(x)
  85
  86 #define memcpy_toio memcpy
  87 #define wmb rte_wmb
  88 #define rmb rte_wmb
  89 #define mb rte_mb
  90 #define __iomem
  91
  92 #define US_PER_S 1000000
  93 #define ENA_GET_SYSTEM_USECS()                                          \
  94         (rte_get_timer_cycles() * US_PER_S / rte_get_timer_hz())
  95
  96 #define ENA_ASSERT(cond, format, arg...)                                \
  97         do {                                                            \
  98                 if (unlikely(!(cond))) {                                \
  99                         printf("Assertion failed on %s:%s:%d: " format, \
 100                         __FILE__, __func__, __LINE__, ##arg);           \
 101                         rte_exit(EXIT_FAILURE, "ASSERTION FAILED\n");   \
 102                 }                                                       \
 103         } while (0)
 104
 105 #define ENA_MAX32(x, y) RTE_MAX((x), (y))
 106 #define ENA_MAX16(x, y) RTE_MAX((x), (y))
 107 #define ENA_MAX8(x, y) RTE_MAX((x), (y))
 108 #define ENA_MIN32(x, y) RTE_MIN((x), (y))
 109 #define ENA_MIN16(x, y) RTE_MIN((x), (y))
 110 #define ENA_MIN8(x, y) RTE_MIN((x), (y))
 111
 112 #define U64_C(x) x ## ULL
 113 #define BIT(nr)         (1UL << (nr))
 114 #define BITS_PER_LONG   (__SIZEOF_LONG__ * 8)
 115 #define GENMASK(h, l)   (((~0UL) << (l)) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
 116 #define GENMASK_ULL(h, l) (((U64_C(1) << ((h) - (l) + 1)) - 1) << (l))
 117
 118 #ifdef RTE_LIBRTE_ENA_COM_DEBUG
 119 #define ena_trc_dbg(format, arg...)                                     \
 120         RTE_LOG(DEBUG, PMD, "[ENA_COM: %s] " format, __func__, ##arg)
 121 #define ena_trc_info(format, arg...)                                    \
 122         RTE_LOG(INFO, PMD, "[ENA_COM: %s] " format, __func__, ##arg)
 123 #define ena_trc_warn(format, arg...)                                    \
 124         RTE_LOG(ERR, PMD, "[ENA_COM: %s] " format, __func__, ##arg)
 125 #define ena_trc_err(format, arg...)                                     \
 126         RTE_LOG(ERR, PMD, "[ENA_COM: %s] " format, __func__, ##arg)
 127 #else
 128 #define ena_trc_dbg(format, arg...) do { } while (0)
 129 #define ena_trc_info(format, arg...) do { } while (0)
 130 #define ena_trc_warn(format, arg...) do { } while (0)
 131 #define ena_trc_err(format, arg...) do { } while (0)
 132 #endif /* RTE_LIBRTE_ENA_COM_DEBUG */
 133
 134 /* Spinlock related methods */
 135 #define ena_spinlock_t rte_spinlock_t
 136 #define ENA_SPINLOCK_INIT(spinlock) rte_spinlock_init(&spinlock)
 137 #define ENA_SPINLOCK_LOCK(spinlock, flags)                              \
 138         ({(void)flags; rte_spinlock_lock(&spinlock); })
 139 #define ENA_SPINLOCK_UNLOCK(spinlock, flags)                            \
 140         ({(void)flags; rte_spinlock_unlock(&(spinlock)); })
 141
 142 #define q_waitqueue_t                   \
 143         struct {                        \
 144                 pthread_cond_t cond;    \
 145                 pthread_mutex_t mutex;  \
 146         }
 147
 148 #define ena_wait_queue_t q_waitqueue_t
 149
 150 #define ENA_WAIT_EVENT_INIT(waitqueue)                                  \
 151         do {                                                            \
 152                 pthread_mutex_init(&(waitqueue).mutex, NULL);           \
 153                 pthread_cond_init(&(waitqueue).cond, NULL);             \
 154         } while (0)
 155
 156 #define ENA_WAIT_EVENT_WAIT(waitevent, timeout)                         \
 157         do {                                                            \
 158                 struct timespec wait;                                   \
 159                 struct timeval now;                                     \
 160                 unsigned long timeout_us;                               \
 161                 gettimeofday(&now, NULL);                               \
 162                 wait.tv_sec = now.tv_sec + timeout / 1000000UL;         \
 163                 timeout_us = timeout % 1000000UL;                       \
 164                 wait.tv_nsec = (now.tv_usec + timeout_us) * 1000UL;     \
 165                 pthread_mutex_lock(&waitevent.mutex);                   \
 166                 pthread_cond_timedwait(&waitevent.cond,                 \
 167                                 &waitevent.mutex, &wait);               \
 168                 pthread_mutex_unlock(&waitevent.mutex);                 \
 169         } while (0)
 170 #define ENA_WAIT_EVENT_SIGNAL(waitevent) pthread_cond_signal(&waitevent.cond)
 171 /* pthread condition doesn't need to be rearmed after usage */
 172 #define ENA_WAIT_EVENT_CLEAR(...)
 173
 174 #define ena_wait_event_t ena_wait_queue_t
 175 #define ENA_MIGHT_SLEEP()
 176
 177 #define ENA_MEM_ALLOC_COHERENT(dmadev, size, virt, phys, handle)        \
 178         do {                                                            \
 179                 const struct rte_memzone *mz;                           \
 180                 char z_name[RTE_MEMZONE_NAMESIZE];                      \
 181                 (void)dmadev; (void)handle;                             \
 182                 snprintf(z_name, sizeof(z_name),                        \
 183                                 "ena_alloc_%d", ena_alloc_cnt++);       \
 184                 mz = rte_memzone_reserve(z_name, size, SOCKET_ID_ANY, 0); \
 185                 virt = mz->addr;                                        \
 186                 phys = mz->phys_addr;                                   \
 187         } while (0)
 188 #define ENA_MEM_FREE_COHERENT(dmadev, size, virt, phys, handle)         \
 189         ({(void)size; rte_free(virt); })
 190 #define ENA_MEM_ALLOC(dmadev, size) rte_zmalloc(NULL, size, 1)
 191 #define ENA_MEM_FREE(dmadev, ptr) ({(void)dmadev; rte_free(ptr); })
 192
 193 static inline void writel(u32 value, volatile void  *addr)
 194 {
 195         *(volatile u32 *)addr = value;
 196 }
 197
 198 static inline u32 readl(const volatile void *addr)
 199 {
 200         return *(const volatile u32 *)addr;
 201 }
 202
 203 #define ENA_REG_WRITE32(value, reg) writel((value), (reg))
 204 #define ENA_REG_READ32(reg) readl((reg))
 205
 206 #define ATOMIC32_INC(i32_ptr) rte_atomic32_inc(i32_ptr)
 207 #define ATOMIC32_DEC(i32_ptr) rte_atomic32_dec(i32_ptr)
 208 #define ATOMIC32_SET(i32_ptr, val) rte_atomic32_set(i32_ptr, val)
 209 #define ATOMIC32_READ(i32_ptr) rte_atomic32_read(i32_ptr)
 210
 211 #define msleep(x) rte_delay_us(x * 1000)
 212 #define udelay(x) rte_delay_us(x)
 213
 214 #define MAX_ERRNO       4095
 215 #define IS_ERR(x) (((unsigned long)x) >= (unsigned long)-MAX_ERRNO)
 216 #define ERR_PTR(error) ((void *)(long)error)
 217 #define PTR_ERR(error) ((long)(void *)error)
 218 #define might_sleep()
 219
 220 #endif /* DPDK_ENA_COM_ENA_PLAT_DPDK_H_ */