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   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 #ifndef _CXGB_COMMON_H_
  40 #define _CXGB_COMMON_H_
  41
  42 #include <linux/module.h>
  43 #include <linux/netdevice.h>
  44 #include <linux/types.h>
  45 #include <linux/delay.h>
  46 #include <linux/pci.h>
  47 #include <linux/ethtool.h>
  48 #include <linux/if_vlan.h>
  49 #include <linux/mii.h>
  50 #include <linux/crc32.h>
  51 #include <linux/init.h>
  52 #include <asm/io.h>
  53 #include <linux/pci_ids.h>
  54
  55 #define DRV_DESCRIPTION "Chelsio 10Gb Ethernet Driver"
  56 #define DRV_NAME "cxgb"
  57 #define DRV_VERSION "2.2"
  58 #define PFX      DRV_NAME ": "
  59
  60 #define CH_ERR(fmt, ...)   printk(KERN_ERR PFX fmt, ## __VA_ARGS__)
  61 #define CH_WARN(fmt, ...)  printk(KERN_WARNING PFX fmt, ## __VA_ARGS__)
  62 #define CH_ALERT(fmt, ...) printk(KERN_ALERT PFX fmt, ## __VA_ARGS__)
  63
  64 /*
  65  * More powerful macro that selectively prints messages based on msg_enable.
  66  * For info and debugging messages.
  67  */
  68 #define CH_MSG(adapter, level, category, fmt, ...) do { \
  69         if ((adapter)->msg_enable & NETIF_MSG_##category) \
  70                 printk(KERN_##level PFX "%s: " fmt, (adapter)->name, \
  71                        ## __VA_ARGS__); \
  72 } while (0)
  73
  74 #ifdef DEBUG
  75 # define CH_DBG(adapter, category, fmt, ...) \
  76         CH_MSG(adapter, DEBUG, category, fmt, ## __VA_ARGS__)
  77 #else
  78 # define CH_DBG(fmt, ...)
  79 #endif
  80
  81 #define CH_DEVICE(devid, ssid, idx) \
  82         { PCI_VENDOR_ID_CHELSIO, devid, PCI_ANY_ID, ssid, 0, 0, idx }
  83
  84 #define SUPPORTED_PAUSE       (1 << 13)
  85 #define SUPPORTED_LOOPBACK    (1 << 15)
  86
  87 #define ADVERTISED_PAUSE      (1 << 13)
  88 #define ADVERTISED_ASYM_PAUSE (1 << 14)
  89
  90 typedef struct adapter adapter_t;
  91
  92 struct t1_rx_mode {
  93         struct net_device *dev;
  94         u32 idx;
  95         struct dev_mc_list *list;
  96 };
  97
  98 #define t1_rx_mode_promisc(rm)  (rm->dev->flags & IFF_PROMISC)
  99 #define t1_rx_mode_allmulti(rm) (rm->dev->flags & IFF_ALLMULTI)
 100 #define t1_rx_mode_mc_cnt(rm)   (rm->dev->mc_count)
 101
 102 static inline u8 *t1_get_next_mcaddr(struct t1_rx_mode *rm)
 103 {
 104         u8 *addr = NULL;
 105
 106         if (rm->idx++ < rm->dev->mc_count) {
 107                 addr = rm->list->dmi_addr;
 108                 rm->list = rm->list->next;
 109         }
 110         return addr;
 111 }
 112
 113 #define MAX_NPORTS 4
 114 #define PORT_MASK ((1 << MAX_NPORTS) - 1)
 115 #define NMTUS      8
 116 #define TCB_SIZE   128
 117
 118 #define SPEED_INVALID 0xffff
 119 #define DUPLEX_INVALID 0xff
 120
 121 enum {
 122         CHBT_BOARD_N110,
 123         CHBT_BOARD_N210,
 124         CHBT_BOARD_7500,
 125         CHBT_BOARD_8000,
 126         CHBT_BOARD_CHT101,
 127         CHBT_BOARD_CHT110,
 128         CHBT_BOARD_CHT210,
 129         CHBT_BOARD_CHT204,
 130         CHBT_BOARD_CHT204V,
 131         CHBT_BOARD_CHT204E,
 132         CHBT_BOARD_CHN204,
 133         CHBT_BOARD_COUGAR,
 134         CHBT_BOARD_6800,
 135         CHBT_BOARD_SIMUL,
 136 };
 137
 138 enum {
 139         CHBT_TERM_FPGA,
 140         CHBT_TERM_T1,
 141         CHBT_TERM_T2,
 142         CHBT_TERM_T3
 143 };
 144
 145 enum {
 146         CHBT_MAC_CHELSIO_A,
 147         CHBT_MAC_IXF1010,
 148         CHBT_MAC_PM3393,
 149         CHBT_MAC_VSC7321,
 150         CHBT_MAC_DUMMY
 151 };
 152
 153 enum {
 154         CHBT_PHY_88E1041,
 155         CHBT_PHY_88E1111,
 156         CHBT_PHY_88X2010,
 157         CHBT_PHY_XPAK,
 158         CHBT_PHY_MY3126,
 159         CHBT_PHY_8244,
 160         CHBT_PHY_DUMMY
 161 };
 162
 163 enum {
 164         PAUSE_RX      = 1 << 0,
 165         PAUSE_TX      = 1 << 1,
 166         PAUSE_AUTONEG = 1 << 2
 167 };
 168
 169 /* Revisions of T1 chip */
 170 enum {
 171         TERM_T1A   = 0,
 172         TERM_T1B   = 1,
 173         TERM_T2    = 3
 174 };
 175
 176 struct sge_params {
 177         unsigned int cmdQ_size[2];
 178         unsigned int freelQ_size[2];
 179         unsigned int large_buf_capacity;
 180         unsigned int rx_coalesce_usecs;
 181         unsigned int last_rx_coalesce_raw;
 182         unsigned int default_rx_coalesce_usecs;
 183         unsigned int sample_interval_usecs;
 184         unsigned int coalesce_enable;
 185         unsigned int polling;
 186 };
 187
 188 struct chelsio_pci_params {
 189         unsigned short speed;
 190         unsigned char  width;
 191         unsigned char  is_pcix;
 192 };
 193
 194 struct tp_params {
 195         unsigned int pm_size;
 196         unsigned int cm_size;
 197         unsigned int pm_rx_base;
 198         unsigned int pm_tx_base;
 199         unsigned int pm_rx_pg_size;
 200         unsigned int pm_tx_pg_size;
 201         unsigned int pm_rx_num_pgs;
 202         unsigned int pm_tx_num_pgs;
 203         unsigned int rx_coalescing_size;
 204         unsigned int use_5tuple_mode;
 205 };
 206
 207 struct mc5_params {
 208         unsigned int mode;       /* selects MC5 width */
 209         unsigned int nservers;   /* size of server region */
 210         unsigned int nroutes;    /* size of routing region */
 211 };
 212
 213 /* Default MC5 region sizes */
 214 #define DEFAULT_SERVER_REGION_LEN 256
 215 #define DEFAULT_RT_REGION_LEN 1024
 216
 217 struct adapter_params {
 218         struct sge_params sge;
 219         struct mc5_params mc5;
 220         struct tp_params  tp;
 221         struct chelsio_pci_params pci;
 222
 223         const struct board_info *brd_info;
 224
 225         unsigned short mtus[NMTUS];
 226         unsigned int   nports;          /* # of ethernet ports */
 227         unsigned int   stats_update_period;
 228         unsigned short chip_revision;
 229         unsigned char  chip_version;
 230         unsigned char  is_asic;
 231         unsigned char  has_msi;
 232 };
 233
 234 struct link_config {
 235         unsigned int   supported;        /* link capabilities */
 236         unsigned int   advertising;      /* advertised capabilities */
 237         unsigned short requested_speed;  /* speed user has requested */
 238         unsigned short speed;            /* actual link speed */
 239         unsigned char  requested_duplex; /* duplex user has requested */
 240         unsigned char  duplex;           /* actual link duplex */
 241         unsigned char  requested_fc;     /* flow control user has requested */
 242         unsigned char  fc;               /* actual link flow control */
 243         unsigned char  autoneg;          /* autonegotiating? */
 244 };
 245
 246 struct cmac;
 247 struct cphy;
 248
 249 struct port_info {
 250         struct net_device *dev;
 251         struct cmac *mac;
 252         struct cphy *phy;
 253         struct link_config link_config;
 254         struct net_device_stats netstats;
 255 };
 256
 257 struct sge;
 258 struct peespi;
 259
 260 struct adapter {
 261         u8 __iomem *regs;
 262         struct pci_dev *pdev;
 263         unsigned long registered_device_map;
 264         unsigned long open_device_map;
 265         unsigned long flags;
 266
 267         const char *name;
 268         int msg_enable;
 269         u32 mmio_len;
 270
 271         struct work_struct ext_intr_handler_task;
 272         struct adapter_params params;
 273
 274         struct vlan_group *vlan_grp;
 275
 276         /* Terminator modules. */
 277         struct sge    *sge;
 278         struct peespi *espi;
 279         struct petp   *tp;
 280
 281         struct napi_struct napi;
 282         struct port_info port[MAX_NPORTS];
 283         struct delayed_work stats_update_task;
 284         struct timer_list stats_update_timer;
 285
 286         spinlock_t tpi_lock;
 287         spinlock_t work_lock;
 288         spinlock_t mac_lock;
 289
 290         /* guards async operations */
 291         spinlock_t async_lock ____cacheline_aligned;
 292         u32 slow_intr_mask;
 293         int t1powersave;
 294 };
 295
 296 enum {                                           /* adapter flags */
 297         FULL_INIT_DONE        = 1 << 0,
 298         TSO_CAPABLE           = 1 << 2,
 299         TCP_CSUM_CAPABLE      = 1 << 3,
 300         UDP_CSUM_CAPABLE      = 1 << 4,
 301         VLAN_ACCEL_CAPABLE    = 1 << 5,
 302         RX_CSUM_ENABLED       = 1 << 6,
 303 };
 304
 305 struct mdio_ops;
 306 struct gmac;
 307 struct gphy;
 308
 309 struct board_info {
 310         unsigned char           board;
 311         unsigned char           port_number;
 312         unsigned long           caps;
 313         unsigned char           chip_term;
 314         unsigned char           chip_mac;
 315         unsigned char           chip_phy;
 316         unsigned int            clock_core;
 317         unsigned int            clock_mc3;
 318         unsigned int            clock_mc4;
 319         unsigned int            espi_nports;
 320         unsigned int            clock_cspi;
 321         unsigned int            clock_elmer0;
 322         unsigned char           mdio_mdien;
 323         unsigned char           mdio_mdiinv;
 324         unsigned char           mdio_mdc;
 325         unsigned char           mdio_phybaseaddr;
 326         const struct gmac      *gmac;
 327         const struct gphy      *gphy;
 328         const struct mdio_ops  *mdio_ops;
 329         const char             *desc;
 330 };
 331
 332 static inline int t1_is_asic(const adapter_t *adapter)
 333 {
 334         return adapter->params.is_asic;
 335 }
 336
 337 extern struct pci_device_id t1_pci_tbl[];
 338
 339 static inline int adapter_matches_type(const adapter_t *adapter,
 340                                        int version, int revision)
 341 {
 342         return adapter->params.chip_version == version &&
 343                adapter->params.chip_revision == revision;
 344 }
 345
 346 #define t1_is_T1B(adap) adapter_matches_type(adap, CHBT_TERM_T1, TERM_T1B)
 347 #define is_T2(adap)     adapter_matches_type(adap, CHBT_TERM_T2, TERM_T2)
 348
 349 /* Returns true if an adapter supports VLAN acceleration and TSO */
 350 static inline int vlan_tso_capable(const adapter_t *adapter)
 351 {
 352         return !t1_is_T1B(adapter);
 353 }
 354
 355 #define for_each_port(adapter, iter) \
 356         for (iter = 0; iter < (adapter)->params.nports; ++iter)
 357
 358 #define board_info(adapter) ((adapter)->params.brd_info)
 359 #define is_10G(adapter) (board_info(adapter)->caps & SUPPORTED_10000baseT_Full)
 360
 361 static inline unsigned int core_ticks_per_usec(const adapter_t *adap)
 362 {
 363         return board_info(adap)->clock_core / 1000000;
 364 }
 365
 366 extern int __t1_tpi_read(adapter_t *adapter, u32 addr, u32 *valp);
 367 extern int __t1_tpi_write(adapter_t *adapter, u32 addr, u32 value);
 368 extern int t1_tpi_write(adapter_t *adapter, u32 addr, u32 value);
 369 extern int t1_tpi_read(adapter_t *adapter, u32 addr, u32 *value);
 370
 371 extern void t1_interrupts_enable(adapter_t *adapter);
 372 extern void t1_interrupts_disable(adapter_t *adapter);
 373 extern void t1_interrupts_clear(adapter_t *adapter);
 374 extern int t1_elmer0_ext_intr_handler(adapter_t *adapter);
 375 extern void t1_elmer0_ext_intr(adapter_t *adapter);
 376 extern int t1_slow_intr_handler(adapter_t *adapter);
 377
 378 extern int t1_link_start(struct cphy *phy, struct cmac *mac, struct link_config *lc);
 379 extern const struct board_info *t1_get_board_info(unsigned int board_id);
 380 extern const struct board_info *t1_get_board_info_from_ids(unsigned int devid,
 381                                                     unsigned short ssid);
 382 extern int t1_seeprom_read(adapter_t *adapter, u32 addr, __le32 *data);
 383 extern int t1_get_board_rev(adapter_t *adapter, const struct board_info *bi,
 384                      struct adapter_params *p);
 385 extern int t1_init_hw_modules(adapter_t *adapter);
 386 extern int t1_init_sw_modules(adapter_t *adapter, const struct board_info *bi);
 387 extern void t1_free_sw_modules(adapter_t *adapter);
 388 extern void t1_fatal_err(adapter_t *adapter);
 389 extern void t1_link_changed(adapter_t *adapter, int port_id);
 390 extern void t1_link_negotiated(adapter_t *adapter, int port_id, int link_stat,
 391                             int speed, int duplex, int pause);
 392 #endif /* _CXGB_COMMON_H_ */