drivers/net/ethernet/chelsio/cxgb4vf/t4vf_common.h

   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
  57 enum 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  */
  77 struct 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  */
 107 struct link_config {
 108         unsigned int   supported;        /* link capabilities */
 109         unsigned int   advertising;      /* advertised capabilities */
 110         unsigned short lp_advertising;   /* peer advertised capabilities */
 111         unsigned int   requested_speed;  /* speed user has requested */
 112         unsigned int   speed;            /* actual link speed */
 113         unsigned char  requested_fc;     /* flow control user has requested */
 114         unsigned char  fc;               /* actual link flow control */
 115         unsigned char  autoneg;          /* autonegotiating? */
 116         unsigned char  link_ok;          /* link up? */
 117 };
 118
 119 enum {
 120         PAUSE_RX      = 1 << 0,
 121         PAUSE_TX      = 1 << 1,
 122         PAUSE_AUTONEG = 1 << 2
 123 };
 124
 125 /*
 126  * General device parameters ...
 127  */
 128 struct dev_params {
 129         u32 fwrev;                      /* firmware version */
 130         u32 tprev;                      /* TP Microcode Version */
 131 };
 132
 133 /*
 134  * Scatter Gather Engine parameters.  These are almost all determined by the
 135  * Physical Function Driver.  We just need to grab them to see within which
 136  * environment we're playing ...
 137  */
 138 struct sge_params {
 139         u32 sge_control;                /* padding, boundaries, lengths, etc. */
 140         u32 sge_control2;               /* T5: more of the same */
 141         u32 sge_host_page_size;         /* PF0-7 page sizes */
 142         u32 sge_egress_queues_per_page; /* PF0-7 egress queues/page */
 143         u32 sge_ingress_queues_per_page;/* PF0-7 ingress queues/page */
 144         u32 sge_vf_hps;                 /* host page size for our vf */
 145         u32 sge_vf_eq_qpp;              /* egress queues/page for our VF */
 146         u32 sge_vf_iq_qpp;              /* ingress queues/page for our VF */
 147         u32 sge_fl_buffer_size[16];     /* free list buffer sizes */
 148         u32 sge_ingress_rx_threshold;   /* RX counter interrupt threshold[4] */
 149         u32 sge_congestion_control;     /* congestion thresholds, etc. */
 150         u32 sge_timer_value_0_and_1;    /* interrupt coalescing timer values */
 151         u32 sge_timer_value_2_and_3;
 152         u32 sge_timer_value_4_and_5;
 153 };
 154
 155 /*
 156  * Vital Product Data parameters.
 157  */
 158 struct vpd_params {
 159         u32 cclk;                       /* Core Clock (KHz) */
 160 };
 161
 162 /* Stores chip specific parameters */
 163 struct arch_specific_params {
 164         u32 sge_fl_db;
 165         u16 mps_tcam_size;
 166 };
 167
 168 /*
 169  * Global Receive Side Scaling (RSS) parameters in host-native format.
 170  */
 171 struct rss_params {
 172         unsigned int mode;              /* RSS mode */
 173         union {
 174             struct {
 175                 unsigned int synmapen:1;        /* SYN Map Enable */
 176                 unsigned int syn4tupenipv6:1;   /* enable hashing 4-tuple IPv6 SYNs */
 177                 unsigned int syn2tupenipv6:1;   /* enable hashing 2-tuple IPv6 SYNs */
 178                 unsigned int syn4tupenipv4:1;   /* enable hashing 4-tuple IPv4 SYNs */
 179                 unsigned int syn2tupenipv4:1;   /* enable hashing 2-tuple IPv4 SYNs */
 180                 unsigned int ofdmapen:1;        /* Offload Map Enable */
 181                 unsigned int tnlmapen:1;        /* Tunnel Map Enable */
 182                 unsigned int tnlalllookup:1;    /* Tunnel All Lookup */
 183                 unsigned int hashtoeplitz:1;    /* use Toeplitz hash */
 184             } basicvirtual;
 185         } u;
 186 };
 187
 188 /*
 189  * Virtual Interface RSS Configuration in host-native format.
 190  */
 191 union rss_vi_config {
 192     struct {
 193         u16 defaultq;                   /* Ingress Queue ID for !tnlalllookup */
 194         unsigned int ip6fourtupen:1;    /* hash 4-tuple IPv6 ingress packets */
 195         unsigned int ip6twotupen:1;     /* hash 2-tuple IPv6 ingress packets */
 196         unsigned int ip4fourtupen:1;    /* hash 4-tuple IPv4 ingress packets */
 197         unsigned int ip4twotupen:1;     /* hash 2-tuple IPv4 ingress packets */
 198         int udpen;                      /* hash 4-tuple UDP ingress packets */
 199     } basicvirtual;
 200 };
 201
 202 /*
 203  * Maximum resources provisioned for a PCI VF.
 204  */
 205 struct vf_resources {
 206         unsigned int nvi;               /* N virtual interfaces */
 207         unsigned int neq;               /* N egress Qs */
 208         unsigned int nethctrl;          /* N egress ETH or CTRL Qs */
 209         unsigned int niqflint;          /* N ingress Qs/w free list(s) & intr */
 210         unsigned int niq;               /* N ingress Qs */
 211         unsigned int tc;                /* PCI-E traffic class */
 212         unsigned int pmask;             /* port access rights mask */
 213         unsigned int nexactf;           /* N exact MPS filters */
 214         unsigned int r_caps;            /* read capabilities */
 215         unsigned int wx_caps;           /* write/execute capabilities */
 216 };
 217
 218 /*
 219  * Per-"adapter" (Virtual Function) parameters.
 220  */
 221 struct adapter_params {
 222         struct dev_params dev;          /* general device parameters */
 223         struct sge_params sge;          /* Scatter Gather Engine */
 224         struct vpd_params vpd;          /* Vital Product Data */
 225         struct rss_params rss;          /* Receive Side Scaling */
 226         struct vf_resources vfres;      /* Virtual Function Resource limits */
 227         struct arch_specific_params arch; /* chip specific params */
 228         enum chip_type chip;            /* chip code */
 229         u8 nports;                      /* # of Ethernet "ports" */
 230 };
 231
 232 /* Firmware Mailbox Command/Reply log.  All values are in Host-Endian format.
 233  * The access and execute times are signed in order to accommodate negative
 234  * error returns.
 235  */
 236 struct mbox_cmd {
 237         u64 cmd[MBOX_LEN / 8];          /* a Firmware Mailbox Command/Reply */
 238         u64 timestamp;                  /* OS-dependent timestamp */
 239         u32 seqno;                      /* sequence number */
 240         s16 access;                     /* time (ms) to access mailbox */
 241         s16 execute;                    /* time (ms) to execute */
 242 };
 243
 244 struct mbox_cmd_log {
 245         unsigned int size;              /* number of entries in the log */
 246         unsigned int cursor;            /* next position in the log to write */
 247         u32 seqno;                      /* next sequence number */
 248         /* variable length mailbox command log starts here */
 249 };
 250
 251 /* Given a pointer to a Firmware Mailbox Command Log and a log entry index,
 252  * return a pointer to the specified entry.
 253  */
 254 static inline struct mbox_cmd *mbox_cmd_log_entry(struct mbox_cmd_log *log,
 255                                                   unsigned int entry_idx)
 256 {
 257         return &((struct mbox_cmd *)&(log)[1])[entry_idx];
 258 }
 259
 260 #include "adapter.h"
 261
 262 #ifndef PCI_VENDOR_ID_CHELSIO
 263 # define PCI_VENDOR_ID_CHELSIO 0x1425
 264 #endif
 265
 266 #define for_each_port(adapter, iter) \
 267         for (iter = 0; iter < (adapter)->params.nports; iter++)
 268
 269 static inline bool is_10g_port(const struct link_config *lc)
 270 {
 271         return (lc->supported & FW_PORT_CAP_SPEED_10G) != 0;
 272 }
 273
 274 /* Return true if the Link Configuration supports "High Speeds" (those greater
 275  * than 1Gb/s).
 276  */
 277 static inline bool is_x_10g_port(const struct link_config *lc)
 278 {
 279         unsigned int speeds, high_speeds;
 280
 281         speeds = FW_PORT_CAP_SPEED_V(FW_PORT_CAP_SPEED_G(lc->supported));
 282         high_speeds = speeds & ~(FW_PORT_CAP_SPEED_100M | FW_PORT_CAP_SPEED_1G);
 283
 284         return high_speeds != 0;
 285 }
 286
 287 static inline unsigned int core_ticks_per_usec(const struct adapter *adapter)
 288 {
 289         return adapter->params.vpd.cclk / 1000;
 290 }
 291
 292 static inline unsigned int us_to_core_ticks(const struct adapter *adapter,
 293                                             unsigned int us)
 294 {
 295         return (us * adapter->params.vpd.cclk) / 1000;
 296 }
 297
 298 static inline unsigned int core_ticks_to_us(const struct adapter *adapter,
 299                                             unsigned int ticks)
 300 {
 301         return (ticks * 1000) / adapter->params.vpd.cclk;
 302 }
 303
 304 int t4vf_wr_mbox_core(struct adapter *, const void *, int, void *, bool);
 305
 306 static inline int t4vf_wr_mbox(struct adapter *adapter, const void *cmd,
 307                                int size, void *rpl)
 308 {
 309         return t4vf_wr_mbox_core(adapter, cmd, size, rpl, true);
 310 }
 311
 312 static inline int t4vf_wr_mbox_ns(struct adapter *adapter, const void *cmd,
 313                                   int size, void *rpl)
 314 {
 315         return t4vf_wr_mbox_core(adapter, cmd, size, rpl, false);
 316 }
 317
 318 #define CHELSIO_PCI_ID_VER(dev_id)  ((dev_id) >> 12)
 319
 320 static inline int is_t4(enum chip_type chip)
 321 {
 322         return CHELSIO_CHIP_VERSION(chip) == CHELSIO_T4;
 323 }
 324
 325 /**
 326  *      hash_mac_addr - return the hash value of a MAC address
 327  *      @addr: the 48-bit Ethernet MAC address
 328  *
 329  *      Hashes a MAC address according to the hash function used by hardware
 330  *      inexact (hash) address matching.
 331  */
 332 static inline int hash_mac_addr(const u8 *addr)
 333 {
 334         u32 a = ((u32)addr[0] << 16) | ((u32)addr[1] << 8) | addr[2];
 335         u32 b = ((u32)addr[3] << 16) | ((u32)addr[4] << 8) | addr[5];
 336
 337         a ^= b;
 338         a ^= (a >> 12);
 339         a ^= (a >> 6);
 340         return a & 0x3f;
 341 }
 342
 343 int t4vf_wait_dev_ready(struct adapter *);
 344 int t4vf_port_init(struct adapter *, int);
 345
 346 int t4vf_fw_reset(struct adapter *);
 347 int t4vf_set_params(struct adapter *, unsigned int, const u32 *, const u32 *);
 348
 349 int t4vf_fl_pkt_align(struct adapter *adapter);
 350 enum t4_bar2_qtype { T4_BAR2_QTYPE_EGRESS, T4_BAR2_QTYPE_INGRESS };
 351 int t4vf_bar2_sge_qregs(struct adapter *adapter,
 352                         unsigned int qid,
 353                         enum t4_bar2_qtype qtype,
 354                         u64 *pbar2_qoffset,
 355                         unsigned int *pbar2_qid);
 356
 357 unsigned int t4vf_get_pf_from_vf(struct adapter *);
 358 int t4vf_get_sge_params(struct adapter *);
 359 int t4vf_get_vpd_params(struct adapter *);
 360 int t4vf_get_dev_params(struct adapter *);
 361 int t4vf_get_rss_glb_config(struct adapter *);
 362 int t4vf_get_vfres(struct adapter *);
 363
 364 int t4vf_read_rss_vi_config(struct adapter *, unsigned int,
 365                             union rss_vi_config *);
 366 int t4vf_write_rss_vi_config(struct adapter *, unsigned int,
 367                              union rss_vi_config *);
 368 int t4vf_config_rss_range(struct adapter *, unsigned int, int, int,
 369                           const u16 *, int);
 370
 371 int t4vf_alloc_vi(struct adapter *, int);
 372 int t4vf_free_vi(struct adapter *, int);
 373 int t4vf_enable_vi(struct adapter *, unsigned int, bool, bool);
 374 int t4vf_identify_port(struct adapter *, unsigned int, unsigned int);
 375
 376 int t4vf_set_rxmode(struct adapter *, unsigned int, int, int, int, int, int,
 377                     bool);
 378 int t4vf_alloc_mac_filt(struct adapter *, unsigned int, bool, unsigned int,
 379                         const u8 **, u16 *, u64 *, bool);
 380 int t4vf_free_mac_filt(struct adapter *, unsigned int, unsigned int naddr,
 381                        const u8 **, bool);
 382 int t4vf_change_mac(struct adapter *, unsigned int, int, const u8 *, bool);
 383 int t4vf_set_addr_hash(struct adapter *, unsigned int, bool, u64, bool);
 384 int t4vf_get_port_stats(struct adapter *, int, struct t4vf_port_stats *);
 385
 386 int t4vf_iq_free(struct adapter *, unsigned int, unsigned int, unsigned int,
 387                  unsigned int);
 388 int t4vf_eth_eq_free(struct adapter *, unsigned int);
 389
 390 int t4vf_handle_fw_rpl(struct adapter *, const __be64 *);
 391 int t4vf_prep_adapter(struct adapter *);
 392 int t4vf_get_vf_mac_acl(struct adapter *adapter, unsigned int pf,
 393                         unsigned int *naddr, u8 *addr);
 394
 395 #endif /* __T4VF_COMMON_H__ */