sys/contrib/ena-com/ena_plat.h

   1 /*-
   2  * BSD LICENSE
   3  *
   4  * Copyright (c) 2015-2017 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 ENA_PLAT_H_
  35 #define ENA_PLAT_H_
  36
  37 #include <sys/cdefs.h>
  38 __FBSDID("$FreeBSD$");
  39
  40 #include <sys/param.h>
  41 #include <sys/systm.h>
  42
  43 #include <sys/bus.h>
  44 #include <sys/condvar.h>
  45 #include <sys/endian.h>
  46 #include <sys/kernel.h>
  47 #include <sys/kthread.h>
  48 #include <sys/malloc.h>
  49 #include <sys/mbuf.h>
  50 #include <sys/module.h>
  51 #include <sys/rman.h>
  52 #include <sys/proc.h>
  53 #include <sys/smp.h>
  54 #include <sys/socket.h>
  55 #include <sys/sockio.h>
  56 #include <sys/sysctl.h>
  57 #include <sys/taskqueue.h>
  58 #include <sys/eventhandler.h>
  59 #include <sys/types.h>
  60 #include <sys/timetc.h>
  61 #include <sys/cdefs.h>
  62
  63 #include <machine/atomic.h>
  64 #include <machine/bus.h>
  65 #include <machine/in_cksum.h>
  66 #include <machine/pcpu.h>
  67 #include <machine/resource.h>
  68
  69 #include <net/bpf.h>
  70 #include <net/ethernet.h>
  71 #include <net/if.h>
  72 #include <net/if_var.h>
  73 #include <net/if_arp.h>
  74 #include <net/if_dl.h>
  75 #include <net/if_media.h>
  76
  77 #include <net/if_types.h>
  78 #include <net/if_vlan_var.h>
  79
  80 #include <netinet/in_systm.h>
  81 #include <netinet/in.h>
  82 #include <netinet/if_ether.h>
  83 #include <netinet/ip.h>
  84 #include <netinet/ip6.h>
  85 #include <netinet/tcp.h>
  86 #include <netinet/tcp_lro.h>
  87 #include <netinet/udp.h>
  88
  89 #include <dev/led/led.h>
  90 #include <dev/pci/pcivar.h>
  91 #include <dev/pci/pcireg.h>
  92
  93 extern struct ena_bus_space ebs;
  94
  95 /* Levels */
  96 #define ENA_ALERT       (1 << 0) /* Alerts are providing more error info.     */
  97 #define ENA_WARNING     (1 << 1) /* Driver output is more error sensitive.    */
  98 #define ENA_INFO        (1 << 2) /* Provides additional driver info.          */
  99 #define ENA_DBG         (1 << 3) /* Driver output for debugging.              */
 100 /* Detailed info that will be printed with ENA_INFO or ENA_DEBUG flag.        */
 101 #define ENA_TXPTH       (1 << 4) /* Allows TX path tracing.                   */
 102 #define ENA_RXPTH       (1 << 5) /* Allows RX path tracing.                   */
 103 #define ENA_RSC         (1 << 6) /* Goes with TXPTH or RXPTH, free/alloc res. */
 104 #define ENA_IOQ         (1 << 7) /* Detailed info about IO queues.            */
 105 #define ENA_ADMQ        (1 << 8) /* Detailed info about admin queue.          */
 106
 107 #ifndef ENA_DEBUG_LEVEL
 108 #define ENA_DEBUG_LEVEL (ENA_ALERT | ENA_WARNING)
 109 #endif
 110
 111 #ifdef ENA_TRACE
 112 #define ena_trace_raw(level, fmt, args...)                      \
 113         do {                                                    \
 114                 if (((level) & ENA_DEBUG_LEVEL) != (level))     \
 115                         break;                                  \
 116                 printf(fmt, ##args);                            \
 117         } while (0)
 118
 119 #define ena_trace(level, fmt, args...)                          \
 120         ena_trace_raw(level, "%s() [TID:%d]: "                  \
 121             fmt " \n", __func__, curthread->td_tid, ##args)
 122
 123 #else /* ENA_TRACE */
 124 #define ena_trace_raw(...)
 125 #define ena_trace(...)
 126 #endif /* ENA_TRACE */
 127
 128 #define ena_trc_dbg(format, arg...)     ena_trace(ENA_DBG, format, ##arg)
 129 #define ena_trc_info(format, arg...)    ena_trace(ENA_INFO, format, ##arg)
 130 #define ena_trc_warn(format, arg...)    ena_trace(ENA_WARNING, format, ##arg)
 131 #define ena_trc_err(format, arg...)     ena_trace(ENA_ALERT, format, ##arg)
 132
 133 #define unlikely(x)     __predict_false(x)
 134 #define likely(x)       __predict_true(x)
 135
 136 #define __iomem
 137 #define ____cacheline_aligned __aligned(CACHE_LINE_SIZE)
 138
 139 #define MAX_ERRNO 4095
 140 #define IS_ERR_VALUE(x) unlikely((x) <= (unsigned long)MAX_ERRNO)
 141
 142 #define ENA_ASSERT(cond, format, arg...)                                \
 143         do {                                                            \
 144                 if (unlikely(!(cond))) {                                \
 145                         ena_trc_err(                                    \
 146                                 "Assert failed on %s:%s:%d:" format,    \
 147                                 __FILE__, __func__, __LINE__, ##arg);   \
 148                 }                                                       \
 149         } while (0)
 150
 151 #define ENA_WARN(cond, format, arg...)                                  \
 152         do {                                                            \
 153                 if (unlikely((cond))) {                                 \
 154                         ena_trc_warn(format, ##arg);                    \
 155                 }                                                       \
 156         } while (0)
 157
 158 static inline long IS_ERR(const void *ptr)
 159 {
 160         return IS_ERR_VALUE((unsigned long)ptr);
 161 }
 162
 163 static inline void *ERR_PTR(long error)
 164 {
 165         return (void *)error;
 166 }
 167
 168 static inline long PTR_ERR(const void *ptr)
 169 {
 170         return (long) ptr;
 171 }
 172
 173 #define GENMASK(h, l)           (((1U << ((h) - (l) + 1)) - 1) << (l))
 174 #define GENMASK_ULL(h, l)       (((~0ULL) << (l)) & (~0ULL >> (64 - 1 - (h))))
 175 #define BIT(x)                  (1 << (x))
 176
 177 #define ENA_ABORT()             BUG()
 178 #define BUG()                   panic("ENA BUG")
 179
 180 #define SZ_256                  (256)
 181 #define SZ_4K                   (4096)
 182
 183 #define ENA_COM_OK              0
 184 #define ENA_COM_FAULT           EFAULT
 185 #define ENA_COM_INVAL           EINVAL
 186 #define ENA_COM_NO_MEM          ENOMEM
 187 #define ENA_COM_NO_SPACE        ENOSPC
 188 #define ENA_COM_TRY_AGAIN       -1
 189 #define ENA_COM_NO_DEVICE       ENODEV
 190 #define ENA_COM_PERMISSION      EPERM
 191 #define ENA_COM_TIMER_EXPIRED   ETIMEDOUT
 192
 193 #define ENA_MSLEEP(x)           pause_sbt("ena", SBT_1MS * (x), SBT_1MS, 0)
 194 #define ENA_UDELAY(x)           DELAY(x)
 195 #define ENA_GET_SYSTEM_TIMEOUT(timeout_us) \
 196     ((long)cputick2usec(cpu_ticks()) + (timeout_us))
 197 #define ENA_TIME_EXPIRE(timeout)  ((timeout) < (long)cputick2usec(cpu_ticks()))
 198 #define ENA_MIGHT_SLEEP()
 199
 200 #define min_t(type, _x, _y) ((type)(_x) < (type)(_y) ? (type)(_x) : (type)(_y))
 201 #define max_t(type, _x, _y) ((type)(_x) > (type)(_y) ? (type)(_x) : (type)(_y))
 202
 203 #define ENA_MIN32(x,y)  MIN(x, y)
 204 #define ENA_MIN16(x,y)  MIN(x, y)
 205 #define ENA_MIN8(x,y)   MIN(x, y)
 206
 207 #define ENA_MAX32(x,y)  MAX(x, y)
 208 #define ENA_MAX16(x,y)  MAX(x, y)
 209 #define ENA_MAX8(x,y)   MAX(x, y)
 210
 211 /* Spinlock related methods */
 212 #define ena_spinlock_t  struct mtx
 213 #define ENA_SPINLOCK_INIT(spinlock)                             \
 214         mtx_init(&(spinlock), "ena_spin", NULL, MTX_SPIN)
 215 #define ENA_SPINLOCK_DESTROY(spinlock)                          \
 216         do {                                                    \
 217                 if (mtx_initialized(&(spinlock)))               \
 218                     mtx_destroy(&(spinlock));                   \
 219         } while (0)
 220 #define ENA_SPINLOCK_LOCK(spinlock, flags)                      \
 221         do {                                                    \
 222                 (void)(flags);                                  \
 223                 mtx_lock_spin(&(spinlock));                     \
 224         } while (0)
 225 #define ENA_SPINLOCK_UNLOCK(spinlock, flags)                    \
 226         do {                                                    \
 227                 (void)(flags);                                  \
 228                 mtx_unlock_spin(&(spinlock));                   \
 229         } while (0)
 230
 231
 232 /* Wait queue related methods */
 233 #define ena_wait_event_t struct { struct cv wq; struct mtx mtx; }
 234 #define ENA_WAIT_EVENT_INIT(waitqueue)                                  \
 235         do {                                                            \
 236                 cv_init(&((waitqueue).wq), "cv");                       \
 237                 mtx_init(&((waitqueue).mtx), "wq", NULL, MTX_DEF);      \
 238         } while (0)
 239 #define ENA_WAIT_EVENT_DESTROY(waitqueue)                               \
 240         do {                                                            \
 241                 cv_destroy(&((waitqueue).wq));                          \
 242                 mtx_destroy(&((waitqueue).mtx));                        \
 243         } while (0)
 244 #define ENA_WAIT_EVENT_CLEAR(waitqueue)                                 \
 245         cv_init(&((waitqueue).wq), (waitqueue).wq.cv_description)
 246 #define ENA_WAIT_EVENT_WAIT(waitqueue, timeout_us)                      \
 247         do {                                                            \
 248                 mtx_lock(&((waitqueue).mtx));                           \
 249                 cv_timedwait(&((waitqueue).wq), &((waitqueue).mtx),     \
 250                     timeout_us * hz / 1000 / 1000 );                    \
 251                 mtx_unlock(&((waitqueue).mtx));                         \
 252         } while (0)
 253 #define ENA_WAIT_EVENT_SIGNAL(waitqueue) cv_broadcast(&((waitqueue).wq))
 254
 255 #define dma_addr_t      bus_addr_t
 256 #define u8              uint8_t
 257 #define u16             uint16_t
 258 #define u32             uint32_t
 259 #define u64             uint64_t
 260
 261 typedef struct {
 262         bus_addr_t              paddr;
 263         caddr_t                 vaddr;
 264         bus_dma_tag_t           tag;
 265         bus_dmamap_t            map;
 266         bus_dma_segment_t       seg;
 267         int                     nseg;
 268 } ena_mem_handle_t;
 269
 270 struct ena_bus {
 271         bus_space_handle_t      reg_bar_h;
 272         bus_space_tag_t         reg_bar_t;
 273         bus_space_handle_t      mem_bar_h;
 274         bus_space_tag_t         mem_bar_t;
 275 };
 276
 277 typedef uint32_t ena_atomic32_t;
 278
 279 void    ena_dmamap_callback(void *arg, bus_dma_segment_t *segs, int nseg,
 280     int error);
 281 int     ena_dma_alloc(device_t dmadev, bus_size_t size, ena_mem_handle_t *dma,
 282     int mapflags);
 283
 284 #define ENA_MEM_ALLOC(dmadev, size) malloc(size, M_DEVBUF, M_NOWAIT | M_ZERO)
 285 #define ENA_MEM_ALLOC_NODE(dmadev, size, virt, node, dev_node) (virt = NULL)
 286 #define ENA_MEM_FREE(dmadev, ptr) free(ptr, M_DEVBUF)
 287 #define ENA_MEM_ALLOC_COHERENT_NODE(dmadev, size, virt, phys, handle, node, \
 288     dev_node)                                                           \
 289         do {                                                            \
 290                 ((virt) = NULL);                                        \
 291                 (void)(dev_node);                                       \
 292         } while (0)
 293
 294 #define ENA_MEM_ALLOC_COHERENT(dmadev, size, virt, phys, dma)           \
 295         do {                                                            \
 296                 ena_dma_alloc((dmadev), (size), &(dma), 0);             \
 297                 (virt) = (void *)(dma).vaddr;                           \
 298                 (phys) = (dma).paddr;                                   \
 299         } while (0)
 300
 301 #define ENA_MEM_FREE_COHERENT(dmadev, size, virt, phys, dma)            \
 302         do {                                                            \
 303                 (void)size;                                             \
 304                 bus_dmamap_unload((dma).tag, (dma).map);                \
 305                 bus_dmamem_free((dma).tag, (virt), (dma).map);          \
 306                 bus_dma_tag_destroy((dma).tag);                         \
 307                 (dma).tag = NULL;                                       \
 308                 (virt) = NULL;                                          \
 309         } while (0)
 310
 311 /* Register R/W methods */
 312 #define ENA_REG_WRITE32(bus, value, offset)                             \
 313         bus_space_write_4(                                              \
 314                           ((struct ena_bus*)bus)->reg_bar_t,            \
 315                           ((struct ena_bus*)bus)->reg_bar_h,            \
 316                           (bus_size_t)(offset), (value))
 317
 318 #define ENA_REG_READ32(bus, offset)                                     \
 319         bus_space_read_4(                                               \
 320                          ((struct ena_bus*)bus)->reg_bar_t,             \
 321                          ((struct ena_bus*)bus)->reg_bar_h,             \
 322                          (bus_size_t)(offset))
 323
 324 #define time_after(a,b) ((long)((unsigned long)(b) - (unsigned long)(a)) < 0)
 325
 326 #define VLAN_HLEN       sizeof(struct ether_vlan_header)
 327 #define CSUM_OFFLOAD    (CSUM_IP|CSUM_TCP|CSUM_UDP)
 328
 329 #if defined(__i386__) || defined(__amd64__)
 330 static __inline
 331 void prefetch(void *x)
 332 {
 333         __asm volatile("prefetcht0 %0" :: "m" (*(unsigned long *)x));
 334 }
 335 #else
 336 #define prefetch(x)
 337 #endif
 338
 339 /* DMA buffers access */
 340 #define dma_unmap_addr(p, name)                 ((p)->dma->name)
 341 #define dma_unmap_addr_set(p, name, v)          (((p)->dma->name) = (v))
 342 #define dma_unmap_len(p, name)                  ((p)->name)
 343 #define dma_unmap_len_set(p, name, v)           (((p)->name) = (v))
 344
 345 #define memcpy_toio memcpy
 346
 347 #define ATOMIC32_INC(I32_PTR)           atomic_add_int(I32_PTR, 1)
 348 #define ATOMIC32_DEC(I32_PTR)           atomic_add_int(I32_PTR, -1)
 349 #define ATOMIC32_READ(I32_PTR)          atomic_load_acq_int(I32_PTR)
 350 #define ATOMIC32_SET(I32_PTR, VAL)      atomic_store_rel_int(I32_PTR, VAL)
 351
 352 #define barrier() __asm__ __volatile__("": : :"memory")
 353 #define ACCESS_ONCE(x) (*(volatile __typeof(x) *)&(x))
 354 #define READ_ONCE(x)  ({                        \
 355                         __typeof(x) __var;      \
 356                         barrier();              \
 357                         __var = ACCESS_ONCE(x); \
 358                         barrier();              \
 359                         __var;                  \
 360                 })
 361
 362 #include "ena_common_defs.h"
 363 #include "ena_admin_defs.h"
 364 #include "ena_eth_io_defs.h"
 365 #include "ena_regs_defs.h"
 366
 367 #endif /* ENA_PLAT_H_ */