LXR linux/drivers/net/ethernet/chelsio/cxgb4vf/t4vf

   1/*
   2 * This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet
   3 * driver for Linux.
   4 *
   5 * Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved.
   6 *
   7 * This software is available to you under a choice of one of two
   8 * licenses.  You may choose to be licensed under the terms of the GNU
   9 * General Public License (GPL) Version 2, available from the file
  10 * COPYING in the main directory of this source tree, or the
  11 * OpenIB.org BSD license below:
  12 *
  13 *     Redistribution and use in source and binary forms, with or
  14 *     without modification, are permitted provided that the following
  15 *     conditions are met:
  16 *
  17 *      - Redistributions of source code must retain the above
  18 *        copyright notice, this list of conditions and the following
  19 *        disclaimer.
  20 *
  21 *      - Redistributions in binary form must reproduce the above
  22 *        copyright notice, this list of conditions and the following
  23 *        disclaimer in the documentation and/or other materials
  24 *        provided with the distribution.
  25 *
  26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  33 * SOFTWARE.
  34 */
  35
  36#ifndef __T4VF_COMMON_H__
  37#define __T4VF_COMMON_H__
  38
  39#include "../cxgb4/t4_hw.h"
  40#include "../cxgb4/t4fw_api.h"
  41
  42#define CHELSIO_CHIP_CODE(version, revision) (((version) << 4) | (revision))
  43#define CHELSIO_CHIP_VERSION(code) (((code) >> 4) & 0xf)
  44#define CHELSIO_CHIP_RELEASE(code) ((code) & 0xf)
  45
  46/* All T4 and later chips have their PCI-E Device IDs encoded as 0xVFPP where:
  47 *
  48 *   V  = "4" for T4; "5" for T5, etc. or
  49 *      = "a" for T4 FPGA; "b" for T4 FPGA, etc.
  50 *   F  = "0" for PF 0..3; "4".."7" for PF4..7; and "8" for VFs
  51 *   PP = adapter product designation
  52 */
  53#define CHELSIO_T4              0x4
  54#define CHELSIO_T5              0x5
  55#define CHELSIO_T6              0x6
  56
  57enum chip_type {
  58        T4_A1 = CHELSIO_CHIP_CODE(CHELSIO_T4, 1),
  59        T4_A2 = CHELSIO_CHIP_CODE(CHELSIO_T4, 2),
  60        T4_FIRST_REV    = T4_A1,
  61        T4_LAST_REV     = T4_A2,
  62
  63        T5_A0 = CHELSIO_CHIP_CODE(CHELSIO_T5, 0),
  64        T5_A1 = CHELSIO_CHIP_CODE(CHELSIO_T5, 1),
  65        T5_FIRST_REV    = T5_A0,
  66        T5_LAST_REV     = T5_A1,
  67};
  68
  69/*
  70 * The "len16" field of a Firmware Command Structure ...
  71 */
  72#define FW_LEN16(fw_struct) FW_CMD_LEN16_V(sizeof(fw_struct) / 16)
  73
  74/*
  75 * Per-VF statistics.
  76 */
  77struct t4vf_port_stats {
  78        /*
  79         * TX statistics.
  80         */
  81        u64 tx_bcast_bytes;             /* broadcast */
  82        u64 tx_bcast_frames;
  83        u64 tx_mcast_bytes;             /* multicast */
  84        u64 tx_mcast_frames;
  85        u64 tx_ucast_bytes;             /* unicast */
  86        u64 tx_ucast_frames;
  87        u64 tx_drop_frames;             /* TX dropped frames */
  88        u64 tx_offload_bytes;           /* offload */
  89        u64 tx_offload_frames;
  90
  91        /*
  92         * RX statistics.
  93         */
  94        u64 rx_bcast_bytes;             /* broadcast */
  95        u64 rx_bcast_frames;
  96        u64 rx_mcast_bytes;             /* multicast */
  97        u64 rx_mcast_frames;
  98        u64 rx_ucast_bytes;
  99        u64 rx_ucast_frames;            /* unicast */
 100
 101        u64 rx_err_frames;              /* RX error frames */
 102};
 103
 104/*
 105 * Per-"port" (Virtual Interface) link configuration ...
 106 */
 107typedef u16 fw_port_cap16_t;    /* 16-bit Port Capabilities integral value */
 108typedef u32 fw_port_cap32_t;    /* 32-bit Port Capabilities integral value */
 109
 110enum fw_caps {
 111        FW_CAPS_UNKNOWN = 0,    /* 0'ed out initial state */
 112        FW_CAPS16       = 1,    /* old Firmware: 16-bit Port Capabilities */
 113        FW_CAPS32       = 2,    /* new Firmware: 32-bit Port Capabilities */
 114};
 115
 116enum cc_pause {
 117        PAUSE_RX        = 1 << 0,
 118        PAUSE_TX        = 1 << 1,
 119        PAUSE_AUTONEG   = 1 << 2
 120};
 121
 122enum cc_fec {
 123        FEC_AUTO        = 1 << 0,       /* IEEE 802.3 "automatic" */
 124        FEC_RS          = 1 << 1,       /* Reed-Solomon */
 125        FEC_BASER_RS    = 1 << 2,       /* BaseR/Reed-Solomon */
 126};
 127
 128struct link_config {
 129        fw_port_cap32_t pcaps;          /* link capabilities */
 130        fw_port_cap32_t acaps;          /* advertised capabilities */
 131        fw_port_cap32_t lpacaps;        /* peer advertised capabilities */
 132
 133        fw_port_cap32_t speed_caps;     /* speed(s) user has requested */
 134        u32             speed;          /* actual link speed */
 135
 136        enum cc_pause   requested_fc;   /* flow control user has requested */
 137        enum cc_pause   fc;             /* actual link flow control */
 138
 139        enum cc_fec     auto_fec;       /* Forward Error Correction: */
 140        enum cc_fec     requested_fec;  /*   "automatic" (IEEE 802.3), */
 141        enum cc_fec     fec;            /*   requested, and actual in use */
 142
 143        unsigned char   autoneg;        /* autonegotiating? */
 144
 145        unsigned char   link_ok;        /* link up? */
 146        unsigned char   link_down_rc;   /* link down reason */
 147};
 148
 149/* Return true if the Link Configuration supports "High Speeds" (those greater
 150 * than 1Gb/s).
 151 */
 152static inline bool is_x_10g_port(const struct link_config *lc)
 153{
 154        fw_port_cap32_t speeds, high_speeds;
 155
 156        speeds = FW_PORT_CAP32_SPEED_V(FW_PORT_CAP32_SPEED_G(lc->pcaps));
 157        high_speeds =
 158                speeds & ~(FW_PORT_CAP32_SPEED_100M | FW_PORT_CAP32_SPEED_1G);
 159
 160        return high_speeds != 0;
 161}
 162
 163/*
 164 * General device parameters ...
 165 */
 166struct dev_params {
 167        u32 fwrev;                      /* firmware version */
 168        u32 tprev;                      /* TP Microcode Version */
 169};
 170
 171/*
 172 * Scatter Gather Engine parameters.  These are almost all determined by the
 173 * Physical Function Driver.  We just need to grab them to see within which
 174 * environment we're playing ...
 175 */
 176struct sge_params {
 177        u32 sge_control;                /* padding, boundaries, lengths, etc. */
 178        u32 sge_control2;               /* T5: more of the same */
 179        u32 sge_host_page_size;         /* PF0-7 page sizes */
 180        u32 sge_egress_queues_per_page; /* PF0-7 egress queues/page */
 181        u32 sge_ingress_queues_per_page;/* PF0-7 ingress queues/page */
 182        u32 sge_vf_hps;                 /* host page size for our vf */
 183        u32 sge_vf_eq_qpp;              /* egress queues/page for our VF */
 184        u32 sge_vf_iq_qpp;              /* ingress queues/page for our VF */
 185        u32 sge_fl_buffer_size[16];     /* free list buffer sizes */
 186        u32 sge_ingress_rx_threshold;   /* RX counter interrupt threshold[4] */
 187        u32 sge_congestion_control;     /* congestion thresholds, etc. */
 188        u32 sge_timer_value_0_and_1;    /* interrupt coalescing timer values */
 189        u32 sge_timer_value_2_and_3;
 190        u32 sge_timer_value_4_and_5;
 191};
 192
 193/*
 194 * Vital Product Data parameters.
 195 */
 196struct vpd_params {
 197        u32 cclk;                       /* Core Clock (KHz) */
 198};
 199
 200/* Stores chip specific parameters */
 201struct arch_specific_params {
 202        u32 sge_fl_db;
 203        u16 mps_tcam_size;
 204};
 205
 206/*
 207 * Global Receive Side Scaling (RSS) parameters in host-native format.
 208 */
 209struct rss_params {
 210        unsigned int mode;              /* RSS mode */
 211        union {
 212            struct {
 213                unsigned int synmapen:1;        /* SYN Map Enable */
 214                unsigned int syn4tupenipv6:1;   /* enable hashing 4-tuple IPv6 SYNs */
 215                unsigned int syn2tupenipv6:1;   /* enable hashing 2-tuple IPv6 SYNs */
 216                unsigned int syn4tupenipv4:1;   /* enable hashing 4-tuple IPv4 SYNs */
 217                unsigned int syn2tupenipv4:1;   /* enable hashing 2-tuple IPv4 SYNs */
 218                unsigned int ofdmapen:1;        /* Offload Map Enable */
 219                unsigned int tnlmapen:1;        /* Tunnel Map Enable */
 220                unsigned int tnlalllookup:1;    /* Tunnel All Lookup */
 221                unsigned int hashtoeplitz:1;    /* use Toeplitz hash */
 222            } basicvirtual;
 223        } u;
 224};
 225
 226/*
 227 * Virtual Interface RSS Configuration in host-native format.
 228 */
 229union rss_vi_config {
 230    struct {
 231        u16 defaultq;                   /* Ingress Queue ID for !tnlalllookup */
 232        unsigned int ip6fourtupen:1;    /* hash 4-tuple IPv6 ingress packets */
 233        unsigned int ip6twotupen:1;     /* hash 2-tuple IPv6 ingress packets */
 234        unsigned int ip4fourtupen:1;    /* hash 4-tuple IPv4 ingress packets */
 235        unsigned int ip4twotupen:1;     /* hash 2-tuple IPv4 ingress packets */
 236        int udpen;                      /* hash 4-tuple UDP ingress packets */
 237    } basicvirtual;
 238};
 239
 240/*
 241 * Maximum resources provisioned for a PCI VF.
 242 */
 243struct vf_resources {
 244        unsigned int nvi;               /* N virtual interfaces */
 245        unsigned int neq;               /* N egress Qs */
 246        unsigned int nethctrl;          /* N egress ETH or CTRL Qs */
 247        unsigned int niqflint;          /* N ingress Qs/w free list(s) & intr */
 248        unsigned int niq;               /* N ingress Qs */
 249        unsigned int tc;                /* PCI-E traffic class */
 250        unsigned int pmask;             /* port access rights mask */
 251        unsigned int nexactf;           /* N exact MPS filters */
 252        unsigned int r_caps;            /* read capabilities */
 253        unsigned int wx_caps;           /* write/execute capabilities */
 254};
 255
 256/*
 257 * Per-"adapter" (Virtual Function) parameters.
 258 */
 259struct adapter_params {
 260        struct dev_params dev;          /* general device parameters */
 261        struct sge_params sge;          /* Scatter Gather Engine */
 262        struct vpd_params vpd;          /* Vital Product Data */
 263        struct rss_params rss;          /* Receive Side Scaling */
 264        struct vf_resources vfres;      /* Virtual Function Resource limits */
 265        struct arch_specific_params arch; /* chip specific params */
 266        enum chip_type chip;            /* chip code */
 267        u8 nports;                      /* # of Ethernet "ports" */
 268        u8 fw_caps_support;             /* 32-bit Port Capabilities */
 269};
 270
 271/* Firmware Mailbox Command/Reply log.  All values are in Host-Endian format.
 272 * The access and execute times are signed in order to accommodate negative
 273 * error returns.
 274 */
 275struct mbox_cmd {
 276        u64 cmd[MBOX_LEN / 8];          /* a Firmware Mailbox Command/Reply */
 277        u64 timestamp;                  /* OS-dependent timestamp */
 278        u32 seqno;                      /* sequence number */
 279        s16 access;                     /* time (ms) to access mailbox */
 280        s16 execute;                    /* time (ms) to execute */
 281};
 282
 283struct mbox_cmd_log {
 284        unsigned int size;              /* number of entries in the log */
 285        unsigned int cursor;            /* next position in the log to write */
 286        u32 seqno;                      /* next sequence number */
 287        /* variable length mailbox command log starts here */
 288};
 289
 290/* Given a pointer to a Firmware Mailbox Command Log and a log entry index,
 291 * return a pointer to the specified entry.
 292 */
 293static inline struct mbox_cmd *mbox_cmd_log_entry(struct mbox_cmd_log *log,
 294                                                  unsigned int entry_idx)
 295{
 296        return &((struct mbox_cmd *)&(log)[1])[entry_idx];
 297}
 298
 299#include "adapter.h"
 300
 301#ifndef PCI_VENDOR_ID_CHELSIO
 302# define PCI_VENDOR_ID_CHELSIO 0x1425
 303#endif
 304
 305#define for_each_port(adapter, iter) \
 306        for (iter = 0; iter < (adapter)->params.nports; iter++)
 307
 308static inline unsigned int core_ticks_per_usec(const struct adapter *adapter)
 309{
 310        return adapter->params.vpd.cclk / 1000;
 311}
 312
 313static inline unsigned int us_to_core_ticks(const struct adapter *adapter,
 314                                            unsigned int us)
 315{
 316        return (us * adapter->params.vpd.cclk) / 1000;
 317}
 318
 319static inline unsigned int core_ticks_to_us(const struct adapter *adapter,
 320                                            unsigned int ticks)
 321{
 322        return (ticks * 1000) / adapter->params.vpd.cclk;
 323}
 324
 325int t4vf_wr_mbox_core(struct adapter *, const void *, int, void *, bool);
 326
 327static inline int t4vf_wr_mbox(struct adapter *adapter, const void *cmd,
 328                               int size, void *rpl)
 329{
 330        return t4vf_wr_mbox_core(adapter, cmd, size, rpl, true);
 331}
 332
 333static inline int t4vf_wr_mbox_ns(struct adapter *adapter, const void *cmd,
 334                                  int size, void *rpl)
 335{
 336        return t4vf_wr_mbox_core(adapter, cmd, size, rpl, false);
 337}
 338
 339#define CHELSIO_PCI_ID_VER(dev_id)  ((dev_id) >> 12)
 340
 341static inline int is_t4(enum chip_type chip)
 342{
 343        return CHELSIO_CHIP_VERSION(chip) == CHELSIO_T4;
 344}
 345
 346/**
 347 *      hash_mac_addr - return the hash value of a MAC address
 348 *      @addr: the 48-bit Ethernet MAC address
 349 *
 350 *      Hashes a MAC address according to the hash function used by hardware
 351 *      inexact (hash) address matching.
 352 */
 353static inline int hash_mac_addr(const u8 *addr)
 354{
 355        u32 a = ((u32)addr[0] << 16) | ((u32)addr[1] << 8) | addr[2];
 356        u32 b = ((u32)addr[3] << 16) | ((u32)addr[4] << 8) | addr[5];
 357
 358        a ^= b;
 359        a ^= (a >> 12);
 360        a ^= (a >> 6);
 361        return a & 0x3f;
 362}
 363
 364int t4vf_wait_dev_ready(struct adapter *);
 365int t4vf_port_init(struct adapter *, int);
 366
 367int t4vf_fw_reset(struct adapter *);
 368int t4vf_set_params(struct adapter *, unsigned int, const u32 *, const u32 *);
 369
 370int t4vf_fl_pkt_align(struct adapter *adapter);
 371enum t4_bar2_qtype { T4_BAR2_QTYPE_EGRESS, T4_BAR2_QTYPE_INGRESS };
 372int t4vf_bar2_sge_qregs(struct adapter *adapter,
 373                        unsigned int qid,
 374                        enum t4_bar2_qtype qtype,
 375                        u64 *pbar2_qoffset,
 376                        unsigned int *pbar2_qid);
 377
 378unsigned int t4vf_get_pf_from_vf(struct adapter *);
 379int t4vf_get_sge_params(struct adapter *);
 380int t4vf_get_vpd_params(struct adapter *);
 381int t4vf_get_dev_params(struct adapter *);
 382int t4vf_get_rss_glb_config(struct adapter *);
 383int t4vf_get_vfres(struct adapter *);
 384
 385int t4vf_read_rss_vi_config(struct adapter *, unsigned int,
 386                            union rss_vi_config *);
 387int t4vf_write_rss_vi_config(struct adapter *, unsigned int,
 388                             union rss_vi_config *);
 389int t4vf_config_rss_range(struct adapter *, unsigned int, int, int,
 390                          const u16 *, int);
 391
 392int t4vf_alloc_vi(struct adapter *, int);
 393int t4vf_free_vi(struct adapter *, int);
 394int t4vf_enable_vi(struct adapter *adapter, unsigned int viid, bool rx_en,
 395                   bool tx_en);
 396int t4vf_enable_pi(struct adapter *adapter, struct port_info *pi, bool rx_en,
 397                   bool tx_en);
 398int t4vf_identify_port(struct adapter *, unsigned int, unsigned int);
 399
 400int t4vf_set_rxmode(struct adapter *, unsigned int, int, int, int, int, int,
 401                    bool);
 402int t4vf_alloc_mac_filt(struct adapter *, unsigned int, bool, unsigned int,
 403                        const u8 **, u16 *, u64 *, bool);
 404int t4vf_free_mac_filt(struct adapter *, unsigned int, unsigned int naddr,
 405                       const u8 **, bool);
 406int t4vf_change_mac(struct adapter *, unsigned int, int, const u8 *, bool);
 407int t4vf_set_addr_hash(struct adapter *, unsigned int, bool, u64, bool);
 408int t4vf_get_port_stats(struct adapter *, int, struct t4vf_port_stats *);
 409
 410int t4vf_iq_free(struct adapter *, unsigned int, unsigned int, unsigned int,
 411                 unsigned int);
 412int t4vf_eth_eq_free(struct adapter *, unsigned int);
 413
 414int t4vf_update_port_info(struct port_info *pi);
 415int t4vf_handle_fw_rpl(struct adapter *, const __be64 *);
 416int t4vf_prep_adapter(struct adapter *);
 417int t4vf_get_vf_mac_acl(struct adapter *adapter, unsigned int pf,
 418                        unsigned int *naddr, u8 *addr);
 419int t4vf_get_vf_vlan_acl(struct adapter *adapter);
 420
 421#endif /* __T4VF_COMMON_H__ */
 422