drivers/net/sfc/xenpack.h

   1 /****************************************************************************
   2  * Driver for Solarflare Solarstorm network controllers and boards
   3  * Copyright 2006 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 #ifndef EFX_XENPACK_H
  11 #define EFX_XENPACK_H
  12
  13 /* Exported functions from Xenpack standard PHY control */
  14
  15 #include "mdio_10g.h"
  16
  17 /****************************************************************************/
  18 /* XENPACK MDIO register extensions */
  19 #define MDIO_XP_LASI_RX_CTRL    (0x9000)
  20 #define MDIO_XP_LASI_TX_CTRL    (0x9001)
  21 #define MDIO_XP_LASI_CTRL       (0x9002)
  22 #define MDIO_XP_LASI_RX_STAT    (0x9003)
  23 #define MDIO_XP_LASI_TX_STAT    (0x9004)
  24 #define MDIO_XP_LASI_STAT       (0x9005)
  25
  26 /* Control/Status bits */
  27 #define XP_LASI_LS_ALARM        (1 << 0)
  28 #define XP_LASI_TX_ALARM        (1 << 1)
  29 #define XP_LASI_RX_ALARM        (1 << 2)
  30 /* These two are Quake vendor extensions to the standard XENPACK defines */
  31 #define XP_LASI_LS_INTB         (1 << 3)
  32 #define XP_LASI_TEST            (1 << 7)
  33
  34 /* Enable LASI interrupts for PHY */
  35 static inline void xenpack_enable_lasi_irqs(struct efx_nic *efx)
  36 {
  37         int reg;
  38         int phy_id = efx->mii.phy_id;
  39         /* Read to clear LASI status register */
  40         reg = mdio_clause45_read(efx, phy_id, MDIO_MMD_PMAPMD,
  41                                  MDIO_XP_LASI_STAT);
  42
  43         mdio_clause45_write(efx, phy_id, MDIO_MMD_PMAPMD,
  44                             MDIO_XP_LASI_CTRL, XP_LASI_LS_ALARM);
  45 }
  46
  47 /* Read the LASI interrupt status to clear the interrupt. */
  48 static inline int xenpack_clear_lasi_irqs(struct efx_nic *efx)
  49 {
  50         /* Read to clear link status alarm */
  51         return mdio_clause45_read(efx, efx->mii.phy_id,
  52                                   MDIO_MMD_PMAPMD, MDIO_XP_LASI_STAT);
  53 }
  54
  55 /* Turn off LASI interrupts */
  56 static inline void xenpack_disable_lasi_irqs(struct efx_nic *efx)
  57 {
  58         mdio_clause45_write(efx, efx->mii.phy_id, MDIO_MMD_PMAPMD,
  59                             MDIO_XP_LASI_CTRL, 0);
  60 }
  61
  62 #endif /* EFX_XENPACK_H */