drivers/infiniband/hw/nes/nes.h

   1 /*
   2  * Copyright (c) 2006 - 2008 NetEffect, Inc. All rights reserved.
   3  * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
   4  *
   5  * This software is available to you under a choice of one of two
   6  * licenses.  You may choose to be licensed under the terms of the GNU
   7  * General Public License (GPL) Version 2, available from the file
   8  * COPYING in the main directory of this source tree, or the
   9  * OpenIB.org BSD license below:
  10  *
  11  *     Redistribution and use in source and binary forms, with or
  12  *     without modification, are permitted provided that the following
  13  *     conditions are met:
  14  *
  15  *      - Redistributions of source code must retain the above
  16  *        copyright notice, this list of conditions and the following
  17  *        disclaimer.
  18  *
  19  *      - Redistributions in binary form must reproduce the above
  20  *        copyright notice, this list of conditions and the following
  21  *        disclaimer in the documentation and/or other materials
  22  *        provided with the distribution.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31  * SOFTWARE.
  32  */
  33
  34 #ifndef __NES_H
  35 #define __NES_H
  36
  37 #include <linux/netdevice.h>
  38 #include <linux/inetdevice.h>
  39 #include <linux/spinlock.h>
  40 #include <linux/kernel.h>
  41 #include <linux/delay.h>
  42 #include <linux/pci.h>
  43 #include <linux/dma-mapping.h>
  44 #include <linux/workqueue.h>
  45 #include <linux/slab.h>
  46 #include <linux/version.h>
  47 #include <asm/io.h>
  48 #include <linux/crc32c.h>
  49
  50 #include <rdma/ib_smi.h>
  51 #include <rdma/ib_verbs.h>
  52 #include <rdma/ib_pack.h>
  53 #include <rdma/rdma_cm.h>
  54 #include <rdma/iw_cm.h>
  55
  56 #define NES_SEND_FIRST_WRITE
  57
  58 #define QUEUE_DISCONNECTS
  59
  60 #define DRV_BUILD   "1"
  61
  62 #define DRV_NAME    "iw_nes"
  63 #define DRV_VERSION "1.0 KO Build " DRV_BUILD
  64 #define PFX         DRV_NAME ": "
  65
  66 /*
  67  * NetEffect PCI vendor id and NE010 PCI device id.
  68  */
  69 #ifndef PCI_VENDOR_ID_NETEFFECT /* not in pci.ids yet */
  70 #define PCI_VENDOR_ID_NETEFFECT       0x1678
  71 #define PCI_DEVICE_ID_NETEFFECT_NE020 0x0100
  72 #endif
  73
  74 #define NE020_REV   4
  75 #define NE020_REV1  5
  76
  77 #define BAR_0       0
  78 #define BAR_1       2
  79
  80 #define RX_BUF_SIZE             (1536 + 8)
  81 #define NES_REG0_SIZE           (4 * 1024)
  82 #define NES_TX_TIMEOUT          (6*HZ)
  83 #define NES_FIRST_QPN           64
  84 #define NES_SW_CONTEXT_ALIGN    1024
  85
  86 #define NES_NIC_MAX_NICS        16
  87 #define NES_MAX_ARP_TABLE_SIZE  4096
  88
  89 #define NES_NIC_CEQ_SIZE        8
  90 /* NICs will be on a separate CQ */
  91 #define NES_CCEQ_SIZE ((nesadapter->max_cq / nesadapter->port_count) - 32)
  92
  93 #define NES_MAX_PORT_COUNT 4
  94
  95 #define MAX_DPC_ITERATIONS               128
  96
  97 #define NES_DRV_OPT_ENABLE_MPA_VER_0     0x00000001
  98 #define NES_DRV_OPT_DISABLE_MPA_CRC      0x00000002
  99 #define NES_DRV_OPT_DISABLE_FIRST_WRITE  0x00000004
 100 #define NES_DRV_OPT_DISABLE_INTF         0x00000008
 101 #define NES_DRV_OPT_ENABLE_MSI           0x00000010
 102 #define NES_DRV_OPT_DUAL_LOGICAL_PORT    0x00000020
 103 #define NES_DRV_OPT_SUPRESS_OPTION_BC    0x00000040
 104 #define NES_DRV_OPT_NO_INLINE_DATA       0x00000080
 105 #define NES_DRV_OPT_DISABLE_INT_MOD      0x00000100
 106 #define NES_DRV_OPT_DISABLE_VIRT_WQ      0x00000200
 107
 108 #define NES_AEQ_EVENT_TIMEOUT         2500
 109 #define NES_DISCONNECT_EVENT_TIMEOUT  2000
 110
 111 /* debug levels */
 112 /* must match userspace */
 113 #define NES_DBG_HW          0x00000001
 114 #define NES_DBG_INIT        0x00000002
 115 #define NES_DBG_ISR         0x00000004
 116 #define NES_DBG_PHY         0x00000008
 117 #define NES_DBG_NETDEV      0x00000010
 118 #define NES_DBG_CM          0x00000020
 119 #define NES_DBG_CM1         0x00000040
 120 #define NES_DBG_NIC_RX      0x00000080
 121 #define NES_DBG_NIC_TX      0x00000100
 122 #define NES_DBG_CQP         0x00000200
 123 #define NES_DBG_MMAP        0x00000400
 124 #define NES_DBG_MR          0x00000800
 125 #define NES_DBG_PD          0x00001000
 126 #define NES_DBG_CQ          0x00002000
 127 #define NES_DBG_QP          0x00004000
 128 #define NES_DBG_MOD_QP      0x00008000
 129 #define NES_DBG_AEQ         0x00010000
 130 #define NES_DBG_IW_RX       0x00020000
 131 #define NES_DBG_IW_TX       0x00040000
 132 #define NES_DBG_SHUTDOWN    0x00080000
 133 #define NES_DBG_RSVD1       0x10000000
 134 #define NES_DBG_RSVD2       0x20000000
 135 #define NES_DBG_RSVD3       0x40000000
 136 #define NES_DBG_RSVD4       0x80000000
 137 #define NES_DBG_ALL         0xffffffff
 138
 139 #ifdef CONFIG_INFINIBAND_NES_DEBUG
 140 #define nes_debug(level, fmt, args...) \
 141         if (level & nes_debug_level) \
 142                 printk(KERN_ERR PFX "%s[%u]: " fmt, __func__, __LINE__, ##args)
 143
 144 #define assert(expr)                                                \
 145 if (!(expr)) {                                                       \
 146         printk(KERN_ERR PFX "Assertion failed! %s, %s, %s, line %d\n",  \
 147                    #expr, __FILE__, __func__, __LINE__);                \
 148 }
 149
 150 #define NES_EVENT_TIMEOUT   1200000
 151 #else
 152 #define nes_debug(level, fmt, args...)
 153 #define assert(expr)          do {} while (0)
 154
 155 #define NES_EVENT_TIMEOUT   100000
 156 #endif
 157
 158 #include "nes_hw.h"
 159 #include "nes_verbs.h"
 160 #include "nes_context.h"
 161 #include "nes_user.h"
 162 #include "nes_cm.h"
 163
 164 extern int max_mtu;
 165 #define max_frame_len (max_mtu+ETH_HLEN)
 166 extern int interrupt_mod_interval;
 167 extern int nes_if_count;
 168 extern int mpa_version;
 169 extern int disable_mpa_crc;
 170 extern unsigned int send_first;
 171 extern unsigned int nes_drv_opt;
 172 extern unsigned int nes_debug_level;
 173
 174 extern struct list_head nes_adapter_list;
 175
 176 extern atomic_t cm_connects;
 177 extern atomic_t cm_accepts;
 178 extern atomic_t cm_disconnects;
 179 extern atomic_t cm_closes;
 180 extern atomic_t cm_connecteds;
 181 extern atomic_t cm_connect_reqs;
 182 extern atomic_t cm_rejects;
 183 extern atomic_t mod_qp_timouts;
 184 extern atomic_t qps_created;
 185 extern atomic_t qps_destroyed;
 186 extern atomic_t sw_qps_destroyed;
 187 extern u32 mh_detected;
 188 extern u32 mh_pauses_sent;
 189 extern u32 cm_packets_sent;
 190 extern u32 cm_packets_bounced;
 191 extern u32 cm_packets_created;
 192 extern u32 cm_packets_received;
 193 extern u32 cm_packets_dropped;
 194 extern u32 cm_packets_retrans;
 195 extern u32 cm_listens_created;
 196 extern u32 cm_listens_destroyed;
 197 extern u32 cm_backlog_drops;
 198 extern atomic_t cm_loopbacks;
 199 extern atomic_t cm_nodes_created;
 200 extern atomic_t cm_nodes_destroyed;
 201 extern atomic_t cm_accel_dropped_pkts;
 202 extern atomic_t cm_resets_recvd;
 203
 204 extern u32 int_mod_timer_init;
 205 extern u32 int_mod_cq_depth_256;
 206 extern u32 int_mod_cq_depth_128;
 207 extern u32 int_mod_cq_depth_32;
 208 extern u32 int_mod_cq_depth_24;
 209 extern u32 int_mod_cq_depth_16;
 210 extern u32 int_mod_cq_depth_4;
 211 extern u32 int_mod_cq_depth_1;
 212
 213 struct nes_device {
 214         struct nes_adapter         *nesadapter;
 215         void __iomem           *regs;
 216         void __iomem           *index_reg;
 217         struct pci_dev         *pcidev;
 218         struct net_device      *netdev[NES_NIC_MAX_NICS];
 219         u64                    link_status_interrupts;
 220         struct tasklet_struct  dpc_tasklet;
 221         spinlock_t             indexed_regs_lock;
 222         unsigned long          csr_start;
 223         unsigned long          doorbell_region;
 224         unsigned long          doorbell_start;
 225         unsigned long          mac_tx_errors;
 226         unsigned long          mac_pause_frames_sent;
 227         unsigned long          mac_pause_frames_received;
 228         unsigned long          mac_rx_errors;
 229         unsigned long          mac_rx_crc_errors;
 230         unsigned long          mac_rx_symbol_err_frames;
 231         unsigned long          mac_rx_jabber_frames;
 232         unsigned long          mac_rx_oversized_frames;
 233         unsigned long          mac_rx_short_frames;
 234         unsigned long          port_rx_discards;
 235         unsigned long          port_tx_discards;
 236         unsigned int           mac_index;
 237         unsigned int           nes_stack_start;
 238
 239         /* Control Structures */
 240         void                   *cqp_vbase;
 241         dma_addr_t             cqp_pbase;
 242         u32                    cqp_mem_size;
 243         u8                     ceq_index;
 244         u8                     nic_ceq_index;
 245         struct nes_hw_cqp      cqp;
 246         struct nes_hw_cq       ccq;
 247         struct list_head       cqp_avail_reqs;
 248         struct list_head       cqp_pending_reqs;
 249         struct nes_cqp_request *nes_cqp_requests;
 250
 251         u32                    int_req;
 252         u32                    int_stat;
 253         u32                    timer_int_req;
 254         u32                    timer_only_int_count;
 255         u32                    intf_int_req;
 256         u32                    last_mac_tx_pauses;
 257         u32                    last_used_chunks_tx;
 258         struct list_head       list;
 259
 260         u16                    base_doorbell_index;
 261         u16                    currcq_count;
 262         u16                    deepcq_count;
 263         u8                     msi_enabled;
 264         u8                     netdev_count;
 265         u8                     napi_isr_ran;
 266         u8                     disable_rx_flow_control;
 267         u8                     disable_tx_flow_control;
 268 };
 269
 270
 271 static inline __le32 get_crc_value(struct nes_v4_quad *nes_quad)
 272 {
 273         u32 crc_value;
 274         crc_value = crc32c(~0, (void *)nes_quad, sizeof (struct nes_v4_quad));
 275
 276         /*
 277          * With commit ef19454b ("[LIB] crc32c: Keep intermediate crc
 278          * state in cpu order"), behavior of crc32c changes on
 279          * big-endian platforms.  Our algorithm expects the previous
 280          * behavior; otherwise we have RDMA connection establishment
 281          * issue on big-endian.
 282          */
 283         return cpu_to_le32(crc_value);
 284 }
 285
 286 static inline void
 287 set_wqe_64bit_value(__le32 *wqe_words, u32 index, u64 value)
 288 {
 289         wqe_words[index]     = cpu_to_le32((u32) ((unsigned long)value));
 290         wqe_words[index + 1] = cpu_to_le32((u32)(upper_32_bits((unsigned long)value)));
 291 }
 292
 293 static inline void
 294 set_wqe_32bit_value(__le32 *wqe_words, u32 index, u32 value)
 295 {
 296         wqe_words[index] = cpu_to_le32(value);
 297 }
 298
 299 static inline void
 300 nes_fill_init_cqp_wqe(struct nes_hw_cqp_wqe *cqp_wqe, struct nes_device *nesdev)
 301 {
 302         set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_COMP_CTX_LOW_IDX,
 303                         (u64)((unsigned long) &nesdev->cqp));
 304         cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_LOW_IDX]   = 0;
 305         cqp_wqe->wqe_words[NES_CQP_WQE_COMP_SCRATCH_HIGH_IDX]  = 0;
 306         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_BLK_COUNT_IDX] = 0;
 307         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PBL_LEN_IDX]       = 0;
 308         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_LEN_LOW_IDX]       = 0;
 309         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_LOW_IDX]        = 0;
 310         cqp_wqe->wqe_words[NES_CQP_STAG_WQE_PA_HIGH_IDX]       = 0;
 311 }
 312
 313 static inline void
 314 nes_fill_init_qp_wqe(struct nes_hw_qp_wqe *wqe, struct nes_qp *nesqp, u32 head)
 315 {
 316         u32 value;
 317         value = ((u32)((unsigned long) nesqp)) | head;
 318         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_HIGH_IDX,
 319                         (u32)(upper_32_bits((unsigned long)(nesqp))));
 320         set_wqe_32bit_value(wqe->wqe_words, NES_IWARP_SQ_WQE_COMP_CTX_LOW_IDX, value);
 321 }
 322
 323 /* Read from memory-mapped device */
 324 static inline u32 nes_read_indexed(struct nes_device *nesdev, u32 reg_index)
 325 {
 326         unsigned long flags;
 327         void __iomem *addr = nesdev->index_reg;
 328         u32 value;
 329
 330         spin_lock_irqsave(&nesdev->indexed_regs_lock, flags);
 331
 332         writel(reg_index, addr);
 333         value = readl((void __iomem *)addr + 4);
 334
 335         spin_unlock_irqrestore(&nesdev->indexed_regs_lock, flags);
 336         return value;
 337 }
 338
 339 static inline u32 nes_read32(const void __iomem *addr)
 340 {
 341         return readl(addr);
 342 }
 343
 344 static inline u16 nes_read16(const void __iomem *addr)
 345 {
 346         return readw(addr);
 347 }
 348
 349 static inline u8 nes_read8(const void __iomem *addr)
 350 {
 351         return readb(addr);
 352 }
 353
 354 /* Write to memory-mapped device */
 355 static inline void nes_write_indexed(struct nes_device *nesdev, u32 reg_index, u32 val)
 356 {
 357         unsigned long flags;
 358         void __iomem *addr = nesdev->index_reg;
 359
 360         spin_lock_irqsave(&nesdev->indexed_regs_lock, flags);
 361
 362         writel(reg_index, addr);
 363         writel(val, (void __iomem *)addr + 4);
 364
 365         spin_unlock_irqrestore(&nesdev->indexed_regs_lock, flags);
 366 }
 367
 368 static inline void nes_write32(void __iomem *addr, u32 val)
 369 {
 370         writel(val, addr);
 371 }
 372
 373 static inline void nes_write16(void __iomem *addr, u16 val)
 374 {
 375         writew(val, addr);
 376 }
 377
 378 static inline void nes_write8(void __iomem *addr, u8 val)
 379 {
 380         writeb(val, addr);
 381 }
 382
 383
 384
 385 static inline int nes_alloc_resource(struct nes_adapter *nesadapter,
 386                 unsigned long *resource_array, u32 max_resources,
 387                 u32 *req_resource_num, u32 *next)
 388 {
 389         unsigned long flags;
 390         u32 resource_num;
 391
 392         spin_lock_irqsave(&nesadapter->resource_lock, flags);
 393
 394         resource_num = find_next_zero_bit(resource_array, max_resources, *next);
 395         if (resource_num >= max_resources) {
 396                 resource_num = find_first_zero_bit(resource_array, max_resources);
 397                 if (resource_num >= max_resources) {
 398                         printk(KERN_ERR PFX "%s: No available resourcess.\n", __func__);
 399                         spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
 400                         return -EMFILE;
 401                 }
 402         }
 403         set_bit(resource_num, resource_array);
 404         *next = resource_num+1;
 405         if (*next == max_resources) {
 406                 *next = 0;
 407         }
 408         spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
 409         *req_resource_num = resource_num;
 410
 411         return 0;
 412 }
 413
 414 static inline int nes_is_resource_allocated(struct nes_adapter *nesadapter,
 415                 unsigned long *resource_array, u32 resource_num)
 416 {
 417         unsigned long flags;
 418         int bit_is_set;
 419
 420         spin_lock_irqsave(&nesadapter->resource_lock, flags);
 421
 422         bit_is_set = test_bit(resource_num, resource_array);
 423         nes_debug(NES_DBG_HW, "resource_num %u is%s allocated.\n",
 424                         resource_num, (bit_is_set ? "": " not"));
 425         spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
 426
 427         return bit_is_set;
 428 }
 429
 430 static inline void nes_free_resource(struct nes_adapter *nesadapter,
 431                 unsigned long *resource_array, u32 resource_num)
 432 {
 433         unsigned long flags;
 434
 435         spin_lock_irqsave(&nesadapter->resource_lock, flags);
 436         clear_bit(resource_num, resource_array);
 437         spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
 438 }
 439
 440 static inline struct nes_vnic *to_nesvnic(struct ib_device *ibdev)
 441 {
 442         return container_of(ibdev, struct nes_ib_device, ibdev)->nesvnic;
 443 }
 444
 445 static inline struct nes_pd *to_nespd(struct ib_pd *ibpd)
 446 {
 447         return container_of(ibpd, struct nes_pd, ibpd);
 448 }
 449
 450 static inline struct nes_ucontext *to_nesucontext(struct ib_ucontext *ibucontext)
 451 {
 452         return container_of(ibucontext, struct nes_ucontext, ibucontext);
 453 }
 454
 455 static inline struct nes_mr *to_nesmr(struct ib_mr *ibmr)
 456 {
 457         return container_of(ibmr, struct nes_mr, ibmr);
 458 }
 459
 460 static inline struct nes_mr *to_nesmr_from_ibfmr(struct ib_fmr *ibfmr)
 461 {
 462         return container_of(ibfmr, struct nes_mr, ibfmr);
 463 }
 464
 465 static inline struct nes_mr *to_nesmw(struct ib_mw *ibmw)
 466 {
 467         return container_of(ibmw, struct nes_mr, ibmw);
 468 }
 469
 470 static inline struct nes_fmr *to_nesfmr(struct nes_mr *nesmr)
 471 {
 472         return container_of(nesmr, struct nes_fmr, nesmr);
 473 }
 474
 475 static inline struct nes_cq *to_nescq(struct ib_cq *ibcq)
 476 {
 477         return container_of(ibcq, struct nes_cq, ibcq);
 478 }
 479
 480 static inline struct nes_qp *to_nesqp(struct ib_qp *ibqp)
 481 {
 482         return container_of(ibqp, struct nes_qp, ibqp);
 483 }
 484
 485
 486
 487 /* nes.c */
 488 void nes_add_ref(struct ib_qp *);
 489 void nes_rem_ref(struct ib_qp *);
 490 struct ib_qp *nes_get_qp(struct ib_device *, int);
 491
 492
 493 /* nes_hw.c */
 494 struct nes_adapter *nes_init_adapter(struct nes_device *, u8);
 495 void  nes_nic_init_timer_defaults(struct nes_device *, u8);
 496 void nes_destroy_adapter(struct nes_adapter *);
 497 int nes_init_cqp(struct nes_device *);
 498 int nes_init_phy(struct nes_device *);
 499 int nes_init_nic_qp(struct nes_device *, struct net_device *);
 500 void nes_destroy_nic_qp(struct nes_vnic *);
 501 int nes_napi_isr(struct nes_device *);
 502 void nes_dpc(unsigned long);
 503 void nes_nic_ce_handler(struct nes_device *, struct nes_hw_nic_cq *);
 504 void nes_iwarp_ce_handler(struct nes_device *, struct nes_hw_cq *);
 505 int nes_destroy_cqp(struct nes_device *);
 506 int nes_nic_cm_xmit(struct sk_buff *, struct net_device *);
 507
 508 /* nes_nic.c */
 509 struct net_device *nes_netdev_init(struct nes_device *, void __iomem *);
 510 void nes_netdev_destroy(struct net_device *);
 511 int nes_nic_cm_xmit(struct sk_buff *, struct net_device *);
 512
 513 /* nes_cm.c */
 514 void *nes_cm_create(struct net_device *);
 515 int nes_cm_recv(struct sk_buff *, struct net_device *);
 516 void nes_update_arp(unsigned char *, u32, u32, u16, u16);
 517 void nes_manage_arp_cache(struct net_device *, unsigned char *, u32, u32);
 518 void nes_sock_release(struct nes_qp *, unsigned long *);
 519 void flush_wqes(struct nes_device *nesdev, struct nes_qp *, u32, u32);
 520 int nes_manage_apbvt(struct nes_vnic *, u32, u32, u32);
 521 int nes_cm_disconn(struct nes_qp *);
 522 void nes_cm_disconn_worker(void *);
 523
 524 /* nes_verbs.c */
 525 int nes_hw_modify_qp(struct nes_device *, struct nes_qp *, u32, u32);
 526 int nes_modify_qp(struct ib_qp *, struct ib_qp_attr *, int, struct ib_udata *);
 527 struct nes_ib_device *nes_init_ofa_device(struct net_device *);
 528 void nes_destroy_ofa_device(struct nes_ib_device *);
 529 int nes_register_ofa_device(struct nes_ib_device *);
 530
 531 /* nes_util.c */
 532 int nes_read_eeprom_values(struct nes_device *, struct nes_adapter *);
 533 void nes_write_1G_phy_reg(struct nes_device *, u8, u8, u16);
 534 void nes_read_1G_phy_reg(struct nes_device *, u8, u8, u16 *);
 535 void nes_write_10G_phy_reg(struct nes_device *, u16, u8, u16, u16);
 536 void nes_read_10G_phy_reg(struct nes_device *, u8, u8, u16);
 537 struct nes_cqp_request *nes_get_cqp_request(struct nes_device *);
 538 void nes_free_cqp_request(struct nes_device *nesdev,
 539                           struct nes_cqp_request *cqp_request);
 540 void nes_put_cqp_request(struct nes_device *nesdev,
 541                          struct nes_cqp_request *cqp_request);
 542 void nes_post_cqp_request(struct nes_device *, struct nes_cqp_request *);
 543 int nes_arp_table(struct nes_device *, u32, u8 *, u32);
 544 void nes_mh_fix(unsigned long);
 545 void nes_clc(unsigned long);
 546 void nes_dump_mem(unsigned int, void *, int);
 547 u32 nes_crc32(u32, u32, u32, u32, u8 *, u32, u32, u32);
 548
 549 #endif  /* __NES_H */