drivers/net/sfc/boards.c

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2007 Solarflare Communications Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published
   7  * by the Free Software Foundation, incorporated herein by reference.
   8  */
   9
  10 #include "net_driver.h"
  11 #include "phy.h"
  12 #include "boards.h"
  13 #include "efx.h"
  14
  15 /* Macros for unpacking the board revision */
  16 /* The revision info is in host byte order. */
  17 #define BOARD_TYPE(_rev) (_rev >> 8)
  18 #define BOARD_MAJOR(_rev) ((_rev >> 4) & 0xf)
  19 #define BOARD_MINOR(_rev) (_rev & 0xf)
  20
  21 /* Blink support. If the PHY has no auto-blink mode so we hang it off a timer */
  22 #define BLINK_INTERVAL (HZ/2)
  23
  24 static void blink_led_timer(unsigned long context)
  25 {
  26         struct efx_nic *efx = (struct efx_nic *)context;
  27         struct efx_blinker *bl = &efx->board_info.blinker;
  28         efx->board_info.set_fault_led(efx, bl->state);
  29         bl->state = !bl->state;
  30         if (bl->resubmit)
  31                 mod_timer(&bl->timer, jiffies + BLINK_INTERVAL);
  32 }
  33
  34 static void board_blink(struct efx_nic *efx, int blink)
  35 {
  36         struct efx_blinker *blinker = &efx->board_info.blinker;
  37
  38         /* The rtnl mutex serialises all ethtool ioctls, so
  39          * nothing special needs doing here. */
  40         if (blink) {
  41                 blinker->resubmit = 1;
  42                 blinker->state = 0;
  43                 setup_timer(&blinker->timer, blink_led_timer,
  44                             (unsigned long)efx);
  45                 mod_timer(&blinker->timer, jiffies + BLINK_INTERVAL);
  46         } else {
  47                 blinker->resubmit = 0;
  48                 if (blinker->timer.function)
  49                         del_timer_sync(&blinker->timer);
  50                 efx->board_info.set_fault_led(efx, 0);
  51         }
  52 }
  53
  54 /*****************************************************************************
  55  * Support for the SFE4002
  56  *
  57  */
  58 /****************************************************************************/
  59 /* LED allocations. Note that on rev A0 boards the schematic and the reality
  60  * differ: red and green are swapped. Below is the fixed (A1) layout (there
  61  * are only 3 A0 boards in existence, so no real reason to make this
  62  * conditional).
  63  */
  64 #define SFE4002_FAULT_LED (2)   /* Red */
  65 #define SFE4002_RX_LED    (0)   /* Green */
  66 #define SFE4002_TX_LED    (1)   /* Amber */
  67
  68 static int sfe4002_init_leds(struct efx_nic *efx)
  69 {
  70         /* Set the TX and RX LEDs to reflect status and activity, and the
  71          * fault LED off */
  72         xfp_set_led(efx, SFE4002_TX_LED,
  73                     QUAKE_LED_TXLINK | QUAKE_LED_LINK_ACTSTAT);
  74         xfp_set_led(efx, SFE4002_RX_LED,
  75                     QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACTSTAT);
  76         xfp_set_led(efx, SFE4002_FAULT_LED, QUAKE_LED_OFF);
  77         efx->board_info.blinker.led_num = SFE4002_FAULT_LED;
  78         return 0;
  79 }
  80
  81 static void sfe4002_fault_led(struct efx_nic *efx, int state)
  82 {
  83         xfp_set_led(efx, SFE4002_FAULT_LED, state ? QUAKE_LED_ON :
  84                         QUAKE_LED_OFF);
  85 }
  86
  87 static int sfe4002_init(struct efx_nic *efx)
  88 {
  89         efx->board_info.init_leds = sfe4002_init_leds;
  90         efx->board_info.set_fault_led = sfe4002_fault_led;
  91         efx->board_info.blink = board_blink;
  92         return 0;
  93 }
  94
  95 /* This will get expanded as board-specific details get moved out of the
  96  * PHY drivers. */
  97 struct efx_board_data {
  98         const char *ref_model;
  99         const char *gen_type;
 100         int (*init) (struct efx_nic *nic);
 101 };
 102
 103 static int dummy_init(struct efx_nic *nic)
 104 {
 105         return 0;
 106 }
 107
 108 static struct efx_board_data board_data[] = {
 109         [EFX_BOARD_INVALID] =
 110         {NULL,      NULL,                  dummy_init},
 111         [EFX_BOARD_SFE4001] =
 112         {"SFE4001", "10GBASE-T adapter",   sfe4001_init},
 113         [EFX_BOARD_SFE4002] =
 114         {"SFE4002", "XFP adapter",         sfe4002_init},
 115 };
 116
 117 int efx_set_board_info(struct efx_nic *efx, u16 revision_info)
 118 {
 119         int rc = 0;
 120         struct efx_board_data *data;
 121
 122         if (BOARD_TYPE(revision_info) >= EFX_BOARD_MAX) {
 123                 EFX_ERR(efx, "squashing unknown board type %d\n",
 124                         BOARD_TYPE(revision_info));
 125                 revision_info = 0;
 126         }
 127
 128         if (BOARD_TYPE(revision_info) == 0) {
 129                 efx->board_info.major = 0;
 130                 efx->board_info.minor = 0;
 131                 /* For early boards that don't have revision info. there is
 132                  * only 1 board for each PHY type, so we can work it out, with
 133                  * the exception of the PHY-less boards. */
 134                 switch (efx->phy_type) {
 135                 case PHY_TYPE_10XPRESS:
 136                         efx->board_info.type = EFX_BOARD_SFE4001;
 137                         break;
 138                 case PHY_TYPE_XFP:
 139                         efx->board_info.type = EFX_BOARD_SFE4002;
 140                         break;
 141                 default:
 142                         efx->board_info.type = 0;
 143                         break;
 144                 }
 145         } else {
 146                 efx->board_info.type = BOARD_TYPE(revision_info);
 147                 efx->board_info.major = BOARD_MAJOR(revision_info);
 148                 efx->board_info.minor = BOARD_MINOR(revision_info);
 149         }
 150
 151         data = &board_data[efx->board_info.type];
 152
 153         /* Report the board model number or generic type for recognisable
 154          * boards. */
 155         if (efx->board_info.type != 0)
 156                 EFX_INFO(efx, "board is %s rev %c%d\n",
 157                          (efx->pci_dev->subsystem_vendor == EFX_VENDID_SFC)
 158                          ? data->ref_model : data->gen_type,
 159                          'A' + efx->board_info.major, efx->board_info.minor);
 160
 161         efx->board_info.init = data->init;
 162
 163         return rc;
 164 }