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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/mii.h>
  49 #include <linux/crc32.h>
  50 #include <linux/init.h>
  51 #include <asm/io.h>
  52 #include <linux/pci_ids.h>
  53
  54 #define DRV_DESCRIPTION "Chelsio 10Gb Ethernet Driver"
  55 #define DRV_NAME "cxgb"
  56 #define DRV_VERSION "2.1.1"
  57 #define PFX      DRV_NAME ": "
  58
  59 #define CH_ERR(fmt, ...)   printk(KERN_ERR PFX fmt, ## __VA_ARGS__)
  60 #define CH_WARN(fmt, ...)  printk(KERN_WARNING PFX fmt, ## __VA_ARGS__)
  61 #define CH_ALERT(fmt, ...) printk(KERN_ALERT PFX fmt, ## __VA_ARGS__)
  62
  63 #define CH_DEVICE(devid, ssid, idx) \
  64         { PCI_VENDOR_ID_CHELSIO, devid, PCI_ANY_ID, ssid, 0, 0, idx }
  65
  66 #define SUPPORTED_PAUSE       (1 << 13)
  67 #define SUPPORTED_LOOPBACK    (1 << 15)
  68
  69 #define ADVERTISED_PAUSE      (1 << 13)
  70 #define ADVERTISED_ASYM_PAUSE (1 << 14)
  71
  72 typedef struct adapter adapter_t;
  73
  74 void t1_elmer0_ext_intr(adapter_t *adapter);
  75 void t1_link_changed(adapter_t *adapter, int port_id, int link_status,
  76                         int speed, int duplex, int fc);
  77
  78 struct t1_rx_mode {
  79         struct net_device *dev;
  80         u32 idx;
  81         struct dev_mc_list *list;
  82 };
  83
  84 #define t1_rx_mode_promisc(rm)  (rm->dev->flags & IFF_PROMISC)
  85 #define t1_rx_mode_allmulti(rm) (rm->dev->flags & IFF_ALLMULTI)
  86 #define t1_rx_mode_mc_cnt(rm)   (rm->dev->mc_count)
  87
  88 static inline u8 *t1_get_next_mcaddr(struct t1_rx_mode *rm)
  89 {
  90         u8 *addr = NULL;
  91
  92         if (rm->idx++ < rm->dev->mc_count) {
  93                 addr = rm->list->dmi_addr;
  94                 rm->list = rm->list->next;
  95         }
  96         return addr;
  97 }
  98
  99 #define MAX_NPORTS 4
 100
 101 #define SPEED_INVALID 0xffff
 102 #define DUPLEX_INVALID 0xff
 103
 104 enum {
 105         CHBT_BOARD_N110,
 106         CHBT_BOARD_N210
 107 };
 108
 109 enum {
 110         CHBT_TERM_T1,
 111         CHBT_TERM_T2
 112 };
 113
 114 enum {
 115         CHBT_MAC_PM3393,
 116 };
 117
 118 enum {
 119         CHBT_PHY_88X2010,
 120 };
 121
 122 enum {
 123         PAUSE_RX      = 1 << 0,
 124         PAUSE_TX      = 1 << 1,
 125         PAUSE_AUTONEG = 1 << 2
 126 };
 127
 128 /* Revisions of T1 chip */
 129 enum {
 130         TERM_T1A   = 0,
 131         TERM_T1B   = 1,
 132         TERM_T2    = 3
 133 };
 134
 135 struct sge_params {
 136         unsigned int cmdQ_size[2];
 137         unsigned int freelQ_size[2];
 138         unsigned int large_buf_capacity;
 139         unsigned int rx_coalesce_usecs;
 140         unsigned int last_rx_coalesce_raw;
 141         unsigned int default_rx_coalesce_usecs;
 142         unsigned int sample_interval_usecs;
 143         unsigned int coalesce_enable;
 144         unsigned int polling;
 145 };
 146
 147 struct chelsio_pci_params {
 148         unsigned short speed;
 149         unsigned char  width;
 150         unsigned char  is_pcix;
 151 };
 152
 153 struct adapter_params {
 154         struct sge_params sge;
 155         struct chelsio_pci_params pci;
 156
 157         const struct board_info *brd_info;
 158
 159         unsigned int   nports;          /* # of ethernet ports */
 160         unsigned int   stats_update_period;
 161         unsigned short chip_revision;
 162         unsigned char  chip_version;
 163 };
 164
 165 struct link_config {
 166         unsigned int   supported;        /* link capabilities */
 167         unsigned int   advertising;      /* advertised capabilities */
 168         unsigned short requested_speed;  /* speed user has requested */
 169         unsigned short speed;            /* actual link speed */
 170         unsigned char  requested_duplex; /* duplex user has requested */
 171         unsigned char  duplex;           /* actual link duplex */
 172         unsigned char  requested_fc;     /* flow control user has requested */
 173         unsigned char  fc;               /* actual link flow control */
 174         unsigned char  autoneg;          /* autonegotiating? */
 175 };
 176
 177 struct cmac;
 178 struct cphy;
 179
 180 struct port_info {
 181         struct net_device *dev;
 182         struct cmac *mac;
 183         struct cphy *phy;
 184         struct link_config link_config;
 185         struct net_device_stats netstats;
 186 };
 187
 188 struct sge;
 189 struct peespi;
 190
 191 struct adapter {
 192         u8 __iomem *regs;
 193         struct pci_dev *pdev;
 194         unsigned long registered_device_map;
 195         unsigned long open_device_map;
 196         unsigned long flags;
 197
 198         const char *name;
 199         int msg_enable;
 200         u32 mmio_len;
 201
 202         struct work_struct ext_intr_handler_task;
 203         struct adapter_params params;
 204
 205         struct vlan_group *vlan_grp;
 206
 207         /* Terminator modules. */
 208         struct sge    *sge;
 209         struct peespi *espi;
 210
 211         struct port_info port[MAX_NPORTS];
 212         struct work_struct stats_update_task;
 213         struct timer_list stats_update_timer;
 214
 215         struct semaphore mib_mutex;
 216         spinlock_t tpi_lock;
 217         spinlock_t work_lock;
 218         /* guards async operations */
 219         spinlock_t async_lock ____cacheline_aligned;
 220         u32 slow_intr_mask;
 221 };
 222
 223 enum {                                           /* adapter flags */
 224         FULL_INIT_DONE        = 1 << 0,
 225         TSO_CAPABLE           = 1 << 2,
 226         TCP_CSUM_CAPABLE      = 1 << 3,
 227         UDP_CSUM_CAPABLE      = 1 << 4,
 228         VLAN_ACCEL_CAPABLE    = 1 << 5,
 229         RX_CSUM_ENABLED       = 1 << 6,
 230 };
 231
 232 struct mdio_ops;
 233 struct gmac;
 234 struct gphy;
 235
 236 struct board_info {
 237         unsigned char           board;
 238         unsigned char           port_number;
 239         unsigned long           caps;
 240         unsigned char           chip_term;
 241         unsigned char           chip_mac;
 242         unsigned char           chip_phy;
 243         unsigned int            clock_core;
 244         unsigned int            clock_mc3;
 245         unsigned int            clock_mc4;
 246         unsigned int            espi_nports;
 247         unsigned int            clock_cspi;
 248         unsigned int            clock_elmer0;
 249         unsigned char           mdio_mdien;
 250         unsigned char           mdio_mdiinv;
 251         unsigned char           mdio_mdc;
 252         unsigned char           mdio_phybaseaddr;
 253         struct gmac            *gmac;
 254         struct gphy            *gphy;
 255         struct mdio_ops        *mdio_ops;
 256         const char             *desc;
 257 };
 258
 259 extern struct pci_device_id t1_pci_tbl[];
 260
 261 static inline int adapter_matches_type(const adapter_t *adapter,
 262                                        int version, int revision)
 263 {
 264         return adapter->params.chip_version == version &&
 265                adapter->params.chip_revision == revision;
 266 }
 267
 268 #define t1_is_T1B(adap) adapter_matches_type(adap, CHBT_TERM_T1, TERM_T1B)
 269 #define is_T2(adap)     adapter_matches_type(adap, CHBT_TERM_T2, TERM_T2)
 270
 271 /* Returns true if an adapter supports VLAN acceleration and TSO */
 272 static inline int vlan_tso_capable(const adapter_t *adapter)
 273 {
 274         return !t1_is_T1B(adapter);
 275 }
 276
 277 #define for_each_port(adapter, iter) \
 278         for (iter = 0; iter < (adapter)->params.nports; ++iter)
 279
 280 #define board_info(adapter) ((adapter)->params.brd_info)
 281 #define is_10G(adapter) (board_info(adapter)->caps & SUPPORTED_10000baseT_Full)
 282
 283 static inline unsigned int core_ticks_per_usec(const adapter_t *adap)
 284 {
 285         return board_info(adap)->clock_core / 1000000;
 286 }
 287
 288 extern int t1_tpi_write(adapter_t *adapter, u32 addr, u32 value);
 289 extern int t1_tpi_read(adapter_t *adapter, u32 addr, u32 *value);
 290
 291 extern void t1_interrupts_enable(adapter_t *adapter);
 292 extern void t1_interrupts_disable(adapter_t *adapter);
 293 extern void t1_interrupts_clear(adapter_t *adapter);
 294 extern int elmer0_ext_intr_handler(adapter_t *adapter);
 295 extern int t1_slow_intr_handler(adapter_t *adapter);
 296
 297 extern int t1_link_start(struct cphy *phy, struct cmac *mac, struct link_config *lc);
 298 extern const struct board_info *t1_get_board_info(unsigned int board_id);
 299 extern const struct board_info *t1_get_board_info_from_ids(unsigned int devid,
 300                                                     unsigned short ssid);
 301 extern int t1_seeprom_read(adapter_t *adapter, u32 addr, u32 *data);
 302 extern int t1_get_board_rev(adapter_t *adapter, const struct board_info *bi,
 303                      struct adapter_params *p);
 304 extern int t1_init_hw_modules(adapter_t *adapter);
 305 extern int t1_init_sw_modules(adapter_t *adapter, const struct board_info *bi);
 306 extern void t1_free_sw_modules(adapter_t *adapter);
 307 extern void t1_fatal_err(adapter_t *adapter);
 308
 309 extern void t1_tp_set_udp_checksum_offload(adapter_t *adapter, int enable);
 310 extern void t1_tp_set_tcp_checksum_offload(adapter_t *adapter, int enable);
 311 extern void t1_tp_set_ip_checksum_offload(adapter_t *adapter, int enable);
 312
 313 #endif /* _CXGB_COMMON_H_ */