drivers/net/chelsio/common.h

   1 /*****************************************************************************
   2  *                                                                           *
   3  * File: common.h                                                            *
   4  * $Revision: 1.21 $                                                         *
   5  * $Date: 2005/06/22 00:43:25 $                                              *
   6  * Description:                                                              *
   7  *  part of the Chelsio 10Gb Ethernet Driver.                                *
   8  *                                                                           *
   9  * This program is free software; you can redistribute it and/or modify      *
  10  * it under the terms of the GNU General Public License, version 2, as       *
  11  * published by the Free Software Foundation.                                *
  12  *                                                                           *
  13  * You should have received a copy of the GNU General Public License along   *
  14  * with this program; if not, write to the Free Software Foundation, Inc.,   *
  15  * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.                 *
  16  *                                                                           *
  17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED    *
  18  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF      *
  19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.                     *
  20  *                                                                           *
  21  * http://www.chelsio.com                                                    *
  22  *                                                                           *
  23  * Copyright (c) 2003 - 2005 Chelsio Communications, Inc.                    *
  24  * All rights reserved.                                                      *
  25  *                                                                           *
  26  * Maintainers: maintainers@chelsio.com                                      *
  27  *                                                                           *
  28  * Authors: Dimitrios Michailidis   <dm@chelsio.com>                         *
  29  *          Tina Yang               <tainay@chelsio.com>                     *
  30  *          Felix Marti             <felix@chelsio.com>                      *
  31  *          Scott Bardone           <sbardone@chelsio.com>                   *
  32  *          Kurt Ottaway            <kottaway@chelsio.com>                   *
  33  *          Frank DiMambro          <frank@chelsio.com>                      *
  34  *                                                                           *
  35  * History:                                                                  *
  36  *                                                                           *
  37  ****************************************************************************/
  38
  39 #define pr_fmt(fmt) "cxgb: " fmt
  40
  41 #ifndef _CXGB_COMMON_H_
  42 #define _CXGB_COMMON_H_
  43
  44 #include <linux/module.h>
  45 #include <linux/netdevice.h>
  46 #include <linux/types.h>
  47 #include <linux/delay.h>
  48 #include <linux/pci.h>
  49 #include <linux/ethtool.h>
  50 #include <linux/if_vlan.h>
  51 #include <linux/mdio.h>
  52 #include <linux/crc32.h>
  53 #include <linux/init.h>
  54 #include <linux/slab.h>
  55 #include <asm/io.h>
  56 #include <linux/pci_ids.h>
  57
  58 #define DRV_DESCRIPTION "Chelsio 10Gb Ethernet Driver"
  59 #define DRV_NAME "cxgb"
  60 #define DRV_VERSION "2.2"
  61
  62 #define CH_DEVICE(devid, ssid, idx) \
  63         { PCI_VENDOR_ID_CHELSIO, devid, PCI_ANY_ID, ssid, 0, 0, idx }
  64
  65 #define SUPPORTED_PAUSE       (1 << 13)
  66 #define SUPPORTED_LOOPBACK    (1 << 15)
  67
  68 #define ADVERTISED_PAUSE      (1 << 13)
  69 #define ADVERTISED_ASYM_PAUSE (1 << 14)
  70
  71 typedef struct adapter adapter_t;
  72
  73 struct t1_rx_mode {
  74        struct net_device *dev;
  75 };
  76
  77 #define t1_rx_mode_promisc(rm)  (rm->dev->flags & IFF_PROMISC)
  78 #define t1_rx_mode_allmulti(rm) (rm->dev->flags & IFF_ALLMULTI)
  79 #define t1_rx_mode_mc_cnt(rm)   (netdev_mc_count(rm->dev))
  80 #define t1_get_netdev(rm)       (rm->dev)
  81
  82 #define MAX_NPORTS 4
  83 #define PORT_MASK ((1 << MAX_NPORTS) - 1)
  84 #define NMTUS      8
  85 #define TCB_SIZE   128
  86
  87 #define SPEED_INVALID 0xffff
  88 #define DUPLEX_INVALID 0xff
  89
  90 enum {
  91         CHBT_BOARD_N110,
  92         CHBT_BOARD_N210,
  93         CHBT_BOARD_7500,
  94         CHBT_BOARD_8000,
  95         CHBT_BOARD_CHT101,
  96         CHBT_BOARD_CHT110,
  97         CHBT_BOARD_CHT210,
  98         CHBT_BOARD_CHT204,
  99         CHBT_BOARD_CHT204V,
 100         CHBT_BOARD_CHT204E,
 101         CHBT_BOARD_CHN204,
 102         CHBT_BOARD_COUGAR,
 103         CHBT_BOARD_6800,
 104         CHBT_BOARD_SIMUL,
 105 };
 106
 107 enum {
 108         CHBT_TERM_FPGA,
 109         CHBT_TERM_T1,
 110         CHBT_TERM_T2,
 111         CHBT_TERM_T3
 112 };
 113
 114 enum {
 115         CHBT_MAC_CHELSIO_A,
 116         CHBT_MAC_IXF1010,
 117         CHBT_MAC_PM3393,
 118         CHBT_MAC_VSC7321,
 119         CHBT_MAC_DUMMY
 120 };
 121
 122 enum {
 123         CHBT_PHY_88E1041,
 124         CHBT_PHY_88E1111,
 125         CHBT_PHY_88X2010,
 126         CHBT_PHY_XPAK,
 127         CHBT_PHY_MY3126,
 128         CHBT_PHY_8244,
 129         CHBT_PHY_DUMMY
 130 };
 131
 132 enum {
 133         PAUSE_RX      = 1 << 0,
 134         PAUSE_TX      = 1 << 1,
 135         PAUSE_AUTONEG = 1 << 2
 136 };
 137
 138 /* Revisions of T1 chip */
 139 enum {
 140         TERM_T1A   = 0,
 141         TERM_T1B   = 1,
 142         TERM_T2    = 3
 143 };
 144
 145 struct sge_params {
 146         unsigned int cmdQ_size[2];
 147         unsigned int freelQ_size[2];
 148         unsigned int large_buf_capacity;
 149         unsigned int rx_coalesce_usecs;
 150         unsigned int last_rx_coalesce_raw;
 151         unsigned int default_rx_coalesce_usecs;
 152         unsigned int sample_interval_usecs;
 153         unsigned int coalesce_enable;
 154         unsigned int polling;
 155 };
 156
 157 struct chelsio_pci_params {
 158         unsigned short speed;
 159         unsigned char  width;
 160         unsigned char  is_pcix;
 161 };
 162
 163 struct tp_params {
 164         unsigned int pm_size;
 165         unsigned int cm_size;
 166         unsigned int pm_rx_base;
 167         unsigned int pm_tx_base;
 168         unsigned int pm_rx_pg_size;
 169         unsigned int pm_tx_pg_size;
 170         unsigned int pm_rx_num_pgs;
 171         unsigned int pm_tx_num_pgs;
 172         unsigned int rx_coalescing_size;
 173         unsigned int use_5tuple_mode;
 174 };
 175
 176 struct mc5_params {
 177         unsigned int mode;       /* selects MC5 width */
 178         unsigned int nservers;   /* size of server region */
 179         unsigned int nroutes;    /* size of routing region */
 180 };
 181
 182 /* Default MC5 region sizes */
 183 #define DEFAULT_SERVER_REGION_LEN 256
 184 #define DEFAULT_RT_REGION_LEN 1024
 185
 186 struct adapter_params {
 187         struct sge_params sge;
 188         struct mc5_params mc5;
 189         struct tp_params  tp;
 190         struct chelsio_pci_params pci;
 191
 192         const struct board_info *brd_info;
 193
 194         unsigned short mtus[NMTUS];
 195         unsigned int   nports;          /* # of ethernet ports */
 196         unsigned int   stats_update_period;
 197         unsigned short chip_revision;
 198         unsigned char  chip_version;
 199         unsigned char  is_asic;
 200         unsigned char  has_msi;
 201 };
 202
 203 struct link_config {
 204         unsigned int   supported;        /* link capabilities */
 205         unsigned int   advertising;      /* advertised capabilities */
 206         unsigned short requested_speed;  /* speed user has requested */
 207         unsigned short speed;            /* actual link speed */
 208         unsigned char  requested_duplex; /* duplex user has requested */
 209         unsigned char  duplex;           /* actual link duplex */
 210         unsigned char  requested_fc;     /* flow control user has requested */
 211         unsigned char  fc;               /* actual link flow control */
 212         unsigned char  autoneg;          /* autonegotiating? */
 213 };
 214
 215 struct cmac;
 216 struct cphy;
 217
 218 struct port_info {
 219         struct net_device *dev;
 220         struct cmac *mac;
 221         struct cphy *phy;
 222         struct link_config link_config;
 223         struct net_device_stats netstats;
 224 };
 225
 226 struct sge;
 227 struct peespi;
 228
 229 struct adapter {
 230         u8 __iomem *regs;
 231         struct pci_dev *pdev;
 232         unsigned long registered_device_map;
 233         unsigned long open_device_map;
 234         unsigned long flags;
 235
 236         const char *name;
 237         int msg_enable;
 238         u32 mmio_len;
 239
 240         struct work_struct ext_intr_handler_task;
 241         struct adapter_params params;
 242
 243         /* Terminator modules. */
 244         struct sge    *sge;
 245         struct peespi *espi;
 246         struct petp   *tp;
 247
 248         struct napi_struct napi;
 249         struct port_info port[MAX_NPORTS];
 250         struct delayed_work stats_update_task;
 251         struct timer_list stats_update_timer;
 252
 253         spinlock_t tpi_lock;
 254         spinlock_t work_lock;
 255         spinlock_t mac_lock;
 256
 257         /* guards async operations */
 258         spinlock_t async_lock ____cacheline_aligned;
 259         u32 slow_intr_mask;
 260         int t1powersave;
 261 };
 262
 263 enum {                                           /* adapter flags */
 264         FULL_INIT_DONE        = 1 << 0,
 265 };
 266
 267 struct mdio_ops;
 268 struct gmac;
 269 struct gphy;
 270
 271 struct board_info {
 272         unsigned char           board;
 273         unsigned char           port_number;
 274         unsigned long           caps;
 275         unsigned char           chip_term;
 276         unsigned char           chip_mac;
 277         unsigned char           chip_phy;
 278         unsigned int            clock_core;
 279         unsigned int            clock_mc3;
 280         unsigned int            clock_mc4;
 281         unsigned int            espi_nports;
 282         unsigned int            clock_elmer0;
 283         unsigned char           mdio_mdien;
 284         unsigned char           mdio_mdiinv;
 285         unsigned char           mdio_mdc;
 286         unsigned char           mdio_phybaseaddr;
 287         const struct gmac      *gmac;
 288         const struct gphy      *gphy;
 289         const struct mdio_ops  *mdio_ops;
 290         const char             *desc;
 291 };
 292
 293 static inline int t1_is_asic(const adapter_t *adapter)
 294 {
 295         return adapter->params.is_asic;
 296 }
 297
 298 extern const struct pci_device_id t1_pci_tbl[];
 299
 300 static inline int adapter_matches_type(const adapter_t *adapter,
 301                                        int version, int revision)
 302 {
 303         return adapter->params.chip_version == version &&
 304                adapter->params.chip_revision == revision;
 305 }
 306
 307 #define t1_is_T1B(adap) adapter_matches_type(adap, CHBT_TERM_T1, TERM_T1B)
 308 #define is_T2(adap)     adapter_matches_type(adap, CHBT_TERM_T2, TERM_T2)
 309
 310 /* Returns true if an adapter supports VLAN acceleration and TSO */
 311 static inline int vlan_tso_capable(const adapter_t *adapter)
 312 {
 313         return !t1_is_T1B(adapter);
 314 }
 315
 316 #define for_each_port(adapter, iter) \
 317         for (iter = 0; iter < (adapter)->params.nports; ++iter)
 318
 319 #define board_info(adapter) ((adapter)->params.brd_info)
 320 #define is_10G(adapter) (board_info(adapter)->caps & SUPPORTED_10000baseT_Full)
 321
 322 static inline unsigned int core_ticks_per_usec(const adapter_t *adap)
 323 {
 324         return board_info(adap)->clock_core / 1000000;
 325 }
 326
 327 extern int __t1_tpi_read(adapter_t *adapter, u32 addr, u32 *valp);
 328 extern int __t1_tpi_write(adapter_t *adapter, u32 addr, u32 value);
 329 extern int t1_tpi_write(adapter_t *adapter, u32 addr, u32 value);
 330 extern int t1_tpi_read(adapter_t *adapter, u32 addr, u32 *value);
 331
 332 extern void t1_interrupts_enable(adapter_t *adapter);
 333 extern void t1_interrupts_disable(adapter_t *adapter);
 334 extern void t1_interrupts_clear(adapter_t *adapter);
 335 extern int t1_elmer0_ext_intr_handler(adapter_t *adapter);
 336 extern void t1_elmer0_ext_intr(adapter_t *adapter);
 337 extern int t1_slow_intr_handler(adapter_t *adapter);
 338
 339 extern int t1_link_start(struct cphy *phy, struct cmac *mac, struct link_config *lc);
 340 extern const struct board_info *t1_get_board_info(unsigned int board_id);
 341 extern const struct board_info *t1_get_board_info_from_ids(unsigned int devid,
 342                                                     unsigned short ssid);
 343 extern int t1_seeprom_read(adapter_t *adapter, u32 addr, __le32 *data);
 344 extern int t1_get_board_rev(adapter_t *adapter, const struct board_info *bi,
 345                      struct adapter_params *p);
 346 extern int t1_init_hw_modules(adapter_t *adapter);
 347 extern int t1_init_sw_modules(adapter_t *adapter, const struct board_info *bi);
 348 extern void t1_free_sw_modules(adapter_t *adapter);
 349 extern void t1_fatal_err(adapter_t *adapter);
 350 extern void t1_link_changed(adapter_t *adapter, int port_id);
 351 extern void t1_link_negotiated(adapter_t *adapter, int port_id, int link_stat,
 352                             int speed, int duplex, int pause);
 353 #endif /* _CXGB_COMMON_H_ */