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/t4fw_api.h"
  40
  41 #define CHELSIO_CHIP_CODE(version, revision) (((version) << 4) | (revision))
  42 #define CHELSIO_CHIP_VERSION(code) (((code) >> 4) & 0xf)
  43 #define CHELSIO_CHIP_RELEASE(code) ((code) & 0xf)
  44
  45 /* All T4 and later chips have their PCI-E Device IDs encoded as 0xVFPP where:
  46  *
  47  *   V  = "4" for T4; "5" for T5, etc. or
  48  *      = "a" for T4 FPGA; "b" for T4 FPGA, etc.
  49  *   F  = "0" for PF 0..3; "4".."7" for PF4..7; and "8" for VFs
  50  *   PP = adapter product designation
  51  */
  52 #define CHELSIO_T4              0x4
  53 #define CHELSIO_T5              0x5
  54
  55 enum chip_type {
  56         T4_A1 = CHELSIO_CHIP_CODE(CHELSIO_T4, 1),
  57         T4_A2 = CHELSIO_CHIP_CODE(CHELSIO_T4, 2),
  58         T4_FIRST_REV    = T4_A1,
  59         T4_LAST_REV     = T4_A2,
  60
  61         T5_A0 = CHELSIO_CHIP_CODE(CHELSIO_T5, 0),
  62         T5_A1 = CHELSIO_CHIP_CODE(CHELSIO_T5, 1),
  63         T5_FIRST_REV    = T5_A0,
  64         T5_LAST_REV     = T5_A1,
  65 };
  66
  67 /*
  68  * The "len16" field of a Firmware Command Structure ...
  69  */
  70 #define FW_LEN16(fw_struct) FW_CMD_LEN16(sizeof(fw_struct) / 16)
  71
  72 /*
  73  * Per-VF statistics.
  74  */
  75 struct t4vf_port_stats {
  76         /*
  77          * TX statistics.
  78          */
  79         u64 tx_bcast_bytes;             /* broadcast */
  80         u64 tx_bcast_frames;
  81         u64 tx_mcast_bytes;             /* multicast */
  82         u64 tx_mcast_frames;
  83         u64 tx_ucast_bytes;             /* unicast */
  84         u64 tx_ucast_frames;
  85         u64 tx_drop_frames;             /* TX dropped frames */
  86         u64 tx_offload_bytes;           /* offload */
  87         u64 tx_offload_frames;
  88
  89         /*
  90          * RX statistics.
  91          */
  92         u64 rx_bcast_bytes;             /* broadcast */
  93         u64 rx_bcast_frames;
  94         u64 rx_mcast_bytes;             /* multicast */
  95         u64 rx_mcast_frames;
  96         u64 rx_ucast_bytes;
  97         u64 rx_ucast_frames;            /* unicast */
  98
  99         u64 rx_err_frames;              /* RX error frames */
 100 };
 101
 102 /*
 103  * Per-"port" (Virtual Interface) link configuration ...
 104  */
 105 struct link_config {
 106         unsigned int   supported;        /* link capabilities */
 107         unsigned int   advertising;      /* advertised capabilities */
 108         unsigned short requested_speed;  /* speed user has requested */
 109         unsigned short speed;            /* actual link speed */
 110         unsigned char  requested_fc;     /* flow control user has requested */
 111         unsigned char  fc;               /* actual link flow control */
 112         unsigned char  autoneg;          /* autonegotiating? */
 113         unsigned char  link_ok;          /* link up? */
 114 };
 115
 116 enum {
 117         PAUSE_RX      = 1 << 0,
 118         PAUSE_TX      = 1 << 1,
 119         PAUSE_AUTONEG = 1 << 2
 120 };
 121
 122 /*
 123  * General device parameters ...
 124  */
 125 struct dev_params {
 126         u32 fwrev;                      /* firmware version */
 127         u32 tprev;                      /* TP Microcode Version */
 128 };
 129
 130 /*
 131  * Scatter Gather Engine parameters.  These are almost all determined by the
 132  * Physical Function Driver.  We just need to grab them to see within which
 133  * environment we're playing ...
 134  */
 135 struct sge_params {
 136         u32 sge_control;                /* padding, boundaries, lengths, etc. */
 137         u32 sge_host_page_size;         /* RDMA page sizes */
 138         u32 sge_queues_per_page;        /* RDMA queues/page */
 139         u32 sge_user_mode_limits;       /* limits for BAR2 user mode accesses */
 140         u32 sge_fl_buffer_size[16];     /* free list buffer sizes */
 141         u32 sge_ingress_rx_threshold;   /* RX counter interrupt threshold[4] */
 142         u32 sge_timer_value_0_and_1;    /* interrupt coalescing timer values */
 143         u32 sge_timer_value_2_and_3;
 144         u32 sge_timer_value_4_and_5;
 145 };
 146
 147 /*
 148  * Vital Product Data parameters.
 149  */
 150 struct vpd_params {
 151         u32 cclk;                       /* Core Clock (KHz) */
 152 };
 153
 154 /*
 155  * Global Receive Side Scaling (RSS) parameters in host-native format.
 156  */
 157 struct rss_params {
 158         unsigned int mode;              /* RSS mode */
 159         union {
 160             struct {
 161                 unsigned int synmapen:1;        /* SYN Map Enable */
 162                 unsigned int syn4tupenipv6:1;   /* enable hashing 4-tuple IPv6 SYNs */
 163                 unsigned int syn2tupenipv6:1;   /* enable hashing 2-tuple IPv6 SYNs */
 164                 unsigned int syn4tupenipv4:1;   /* enable hashing 4-tuple IPv4 SYNs */
 165                 unsigned int syn2tupenipv4:1;   /* enable hashing 2-tuple IPv4 SYNs */
 166                 unsigned int ofdmapen:1;        /* Offload Map Enable */
 167                 unsigned int tnlmapen:1;        /* Tunnel Map Enable */
 168                 unsigned int tnlalllookup:1;    /* Tunnel All Lookup */
 169                 unsigned int hashtoeplitz:1;    /* use Toeplitz hash */
 170             } basicvirtual;
 171         } u;
 172 };
 173
 174 /*
 175  * Virtual Interface RSS Configuration in host-native format.
 176  */
 177 union rss_vi_config {
 178     struct {
 179         u16 defaultq;                   /* Ingress Queue ID for !tnlalllookup */
 180         unsigned int ip6fourtupen:1;    /* hash 4-tuple IPv6 ingress packets */
 181         unsigned int ip6twotupen:1;     /* hash 2-tuple IPv6 ingress packets */
 182         unsigned int ip4fourtupen:1;    /* hash 4-tuple IPv4 ingress packets */
 183         unsigned int ip4twotupen:1;     /* hash 2-tuple IPv4 ingress packets */
 184         int udpen;                      /* hash 4-tuple UDP ingress packets */
 185     } basicvirtual;
 186 };
 187
 188 /*
 189  * Maximum resources provisioned for a PCI VF.
 190  */
 191 struct vf_resources {
 192         unsigned int nvi;               /* N virtual interfaces */
 193         unsigned int neq;               /* N egress Qs */
 194         unsigned int nethctrl;          /* N egress ETH or CTRL Qs */
 195         unsigned int niqflint;          /* N ingress Qs/w free list(s) & intr */
 196         unsigned int niq;               /* N ingress Qs */
 197         unsigned int tc;                /* PCI-E traffic class */
 198         unsigned int pmask;             /* port access rights mask */
 199         unsigned int nexactf;           /* N exact MPS filters */
 200         unsigned int r_caps;            /* read capabilities */
 201         unsigned int wx_caps;           /* write/execute capabilities */
 202 };
 203
 204 /*
 205  * Per-"adapter" (Virtual Function) parameters.
 206  */
 207 struct adapter_params {
 208         struct dev_params dev;          /* general device parameters */
 209         struct sge_params sge;          /* Scatter Gather Engine */
 210         struct vpd_params vpd;          /* Vital Product Data */
 211         struct rss_params rss;          /* Receive Side Scaling */
 212         struct vf_resources vfres;      /* Virtual Function Resource limits */
 213         enum chip_type chip;            /* chip code */
 214         u8 nports;                      /* # of Ethernet "ports" */
 215 };
 216
 217 #include "adapter.h"
 218
 219 #ifndef PCI_VENDOR_ID_CHELSIO
 220 # define PCI_VENDOR_ID_CHELSIO 0x1425
 221 #endif
 222
 223 #define for_each_port(adapter, iter) \
 224         for (iter = 0; iter < (adapter)->params.nports; iter++)
 225
 226 static inline bool is_10g_port(const struct link_config *lc)
 227 {
 228         return (lc->supported & SUPPORTED_10000baseT_Full) != 0;
 229 }
 230
 231 static inline bool is_x_10g_port(const struct link_config *lc)
 232 {
 233         return (lc->supported & FW_PORT_CAP_SPEED_10G) != 0 ||
 234                 (lc->supported & FW_PORT_CAP_SPEED_40G) != 0;
 235 }
 236
 237 static inline unsigned int core_ticks_per_usec(const struct adapter *adapter)
 238 {
 239         return adapter->params.vpd.cclk / 1000;
 240 }
 241
 242 static inline unsigned int us_to_core_ticks(const struct adapter *adapter,
 243                                             unsigned int us)
 244 {
 245         return (us * adapter->params.vpd.cclk) / 1000;
 246 }
 247
 248 static inline unsigned int core_ticks_to_us(const struct adapter *adapter,
 249                                             unsigned int ticks)
 250 {
 251         return (ticks * 1000) / adapter->params.vpd.cclk;
 252 }
 253
 254 int t4vf_wr_mbox_core(struct adapter *, const void *, int, void *, bool);
 255
 256 static inline int t4vf_wr_mbox(struct adapter *adapter, const void *cmd,
 257                                int size, void *rpl)
 258 {
 259         return t4vf_wr_mbox_core(adapter, cmd, size, rpl, true);
 260 }
 261
 262 static inline int t4vf_wr_mbox_ns(struct adapter *adapter, const void *cmd,
 263                                   int size, void *rpl)
 264 {
 265         return t4vf_wr_mbox_core(adapter, cmd, size, rpl, false);
 266 }
 267
 268 static inline int is_t4(enum chip_type chip)
 269 {
 270         return CHELSIO_CHIP_VERSION(chip) == CHELSIO_T4;
 271 }
 272
 273 int t4vf_wait_dev_ready(struct adapter *);
 274 int t4vf_port_init(struct adapter *, int);
 275
 276 int t4vf_fw_reset(struct adapter *);
 277 int t4vf_set_params(struct adapter *, unsigned int, const u32 *, const u32 *);
 278
 279 int t4vf_get_sge_params(struct adapter *);
 280 int t4vf_get_vpd_params(struct adapter *);
 281 int t4vf_get_dev_params(struct adapter *);
 282 int t4vf_get_rss_glb_config(struct adapter *);
 283 int t4vf_get_vfres(struct adapter *);
 284
 285 int t4vf_read_rss_vi_config(struct adapter *, unsigned int,
 286                             union rss_vi_config *);
 287 int t4vf_write_rss_vi_config(struct adapter *, unsigned int,
 288                              union rss_vi_config *);
 289 int t4vf_config_rss_range(struct adapter *, unsigned int, int, int,
 290                           const u16 *, int);
 291
 292 int t4vf_alloc_vi(struct adapter *, int);
 293 int t4vf_free_vi(struct adapter *, int);
 294 int t4vf_enable_vi(struct adapter *, unsigned int, bool, bool);
 295 int t4vf_identify_port(struct adapter *, unsigned int, unsigned int);
 296
 297 int t4vf_set_rxmode(struct adapter *, unsigned int, int, int, int, int, int,
 298                     bool);
 299 int t4vf_alloc_mac_filt(struct adapter *, unsigned int, bool, unsigned int,
 300                         const u8 **, u16 *, u64 *, bool);
 301 int t4vf_change_mac(struct adapter *, unsigned int, int, const u8 *, bool);
 302 int t4vf_set_addr_hash(struct adapter *, unsigned int, bool, u64, bool);
 303 int t4vf_get_port_stats(struct adapter *, int, struct t4vf_port_stats *);
 304
 305 int t4vf_iq_free(struct adapter *, unsigned int, unsigned int, unsigned int,
 306                  unsigned int);
 307 int t4vf_eth_eq_free(struct adapter *, unsigned int);
 308
 309 int t4vf_handle_fw_rpl(struct adapter *, const __be64 *);
 310
 311 #endif /* __T4VF_COMMON_H__ */