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   1 /*****************************************************************************
   2  *                                                                           *
   3  * File: cphy.h                                                              *
   4  * $Revision: 1.7 $                                                          *
   5  * $Date: 2005/06/21 18:29:47 $                                              *
   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_CPHY_H_
  40 #define _CXGB_CPHY_H_
  41
  42 #include "common.h"
  43
  44 struct mdio_ops {
  45         void (*init)(adapter_t *adapter, const struct board_info *bi);
  46         int  (*read)(adapter_t *adapter, int phy_addr, int mmd_addr,
  47                      int reg_addr, unsigned int *val);
  48         int  (*write)(adapter_t *adapter, int phy_addr, int mmd_addr,
  49                       int reg_addr, unsigned int val);
  50 };
  51
  52 /* PHY interrupt types */
  53 enum {
  54         cphy_cause_link_change = 0x1,
  55         cphy_cause_error = 0x2,
  56         cphy_cause_fifo_error = 0x3
  57 };
  58
  59 enum {
  60         PHY_LINK_UP = 0x1,
  61         PHY_AUTONEG_RDY = 0x2,
  62         PHY_AUTONEG_EN = 0x4
  63 };
  64
  65 struct cphy;
  66
  67 /* PHY operations */
  68 struct cphy_ops {
  69         void (*destroy)(struct cphy *);
  70         int (*reset)(struct cphy *, int wait);
  71
  72         int (*interrupt_enable)(struct cphy *);
  73         int (*interrupt_disable)(struct cphy *);
  74         int (*interrupt_clear)(struct cphy *);
  75         int (*interrupt_handler)(struct cphy *);
  76
  77         int (*autoneg_enable)(struct cphy *);
  78         int (*autoneg_disable)(struct cphy *);
  79         int (*autoneg_restart)(struct cphy *);
  80
  81         int (*advertise)(struct cphy *phy, unsigned int advertise_map);
  82         int (*set_loopback)(struct cphy *, int on);
  83         int (*set_speed_duplex)(struct cphy *phy, int speed, int duplex);
  84         int (*get_link_status)(struct cphy *phy, int *link_ok, int *speed,
  85                                int *duplex, int *fc);
  86 };
  87
  88 /* A PHY instance */
  89 struct cphy {
  90         int addr;                            /* PHY address */
  91         int state;      /* Link status state machine */
  92         adapter_t *adapter;                  /* associated adapter */
  93
  94         struct delayed_work phy_update;
  95
  96         u16 bmsr;
  97         int count;
  98         int act_count;
  99         int act_on;
 100
 101         u32 elmer_gpo;
 102
 103         const struct cphy_ops *ops;            /* PHY operations */
 104         int (*mdio_read)(adapter_t *adapter, int phy_addr, int mmd_addr,
 105                          int reg_addr, unsigned int *val);
 106         int (*mdio_write)(adapter_t *adapter, int phy_addr, int mmd_addr,
 107                           int reg_addr, unsigned int val);
 108         struct cphy_instance *instance;
 109 };
 110
 111 /* Convenience MDIO read/write wrappers */
 112 static inline int mdio_read(struct cphy *cphy, int mmd, int reg,
 113                             unsigned int *valp)
 114 {
 115         return cphy->mdio_read(cphy->adapter, cphy->addr, mmd, reg, valp);
 116 }
 117
 118 static inline int mdio_write(struct cphy *cphy, int mmd, int reg,
 119                              unsigned int val)
 120 {
 121         return cphy->mdio_write(cphy->adapter, cphy->addr, mmd, reg, val);
 122 }
 123
 124 static inline int simple_mdio_read(struct cphy *cphy, int reg,
 125                                    unsigned int *valp)
 126 {
 127         return mdio_read(cphy, 0, reg, valp);
 128 }
 129
 130 static inline int simple_mdio_write(struct cphy *cphy, int reg,
 131                                     unsigned int val)
 132 {
 133         return mdio_write(cphy, 0, reg, val);
 134 }
 135
 136 /* Convenience initializer */
 137 static inline void cphy_init(struct cphy *phy, adapter_t *adapter,
 138                              int phy_addr, struct cphy_ops *phy_ops,
 139                              const struct mdio_ops *mdio_ops)
 140 {
 141         phy->adapter = adapter;
 142         phy->addr    = phy_addr;
 143         phy->ops     = phy_ops;
 144         if (mdio_ops) {
 145                 phy->mdio_read  = mdio_ops->read;
 146                 phy->mdio_write = mdio_ops->write;
 147         }
 148 }
 149
 150 /* Operations of the PHY-instance factory */
 151 struct gphy {
 152         /* Construct a PHY instance with the given PHY address */
 153         struct cphy *(*create)(adapter_t *adapter, int phy_addr,
 154                                const struct mdio_ops *mdio_ops);
 155
 156         /*
 157          * Reset the PHY chip.  This resets the whole PHY chip, not individual
 158          * ports.
 159          */
 160         int (*reset)(adapter_t *adapter);
 161 };
 162
 163 extern const struct gphy t1_my3126_ops;
 164 extern const struct gphy t1_mv88e1xxx_ops;
 165 extern const struct gphy t1_vsc8244_ops;
 166 extern const struct gphy t1_mv88x201x_ops;
 167
 168 #endif /* _CXGB_CPHY_H_ */