src/add-ons/kernel/drivers/network/wlan/atheroswifi/glue.c

   1 /*
   2  * Copyright 2009, Colin Günther, coling@gmx.de.
   3  * All Rights Reserved. Distributed under the terms of the MIT License.
   4  */
   5
   6
   7 #include <sys/bus.h>
   8 #include <sys/kernel.h>
   9
  10 #include <net/if.h>
  11 #include <net/if_media.h>
  12
  13 #include <net80211/ieee80211_var.h>
  14
  15 #include <dev/ath/if_athvar.h>
  16
  17
  18 HAIKU_FBSD_WLAN_DRIVER_GLUE(atheroswifi, ath_pci, pci)
  19 NO_HAIKU_FBSD_MII_DRIVER();
  20 HAIKU_DRIVER_REQUIREMENTS(FBSD_TASKQUEUES | FBSD_WLAN);
  21
  22
  23 int
  24 HAIKU_CHECK_DISABLE_INTERRUPTS(device_t dev)
  25 {
  26         struct ath_softc* sc = (struct ath_softc*)device_get_softc(dev);
  27         struct ath_hal* ah = sc->sc_ah;
  28         HAL_INT intr_status;
  29
  30         if (sc->sc_invalid) {
  31                 // The hardware is not ready/present, don't touch anything.
  32                 // Note this can happen early on if the IRQ is shared.
  33                 return 0;
  34         }
  35
  36         if (!ath_hal_intrpend(ah)) {
  37                 // shared irq, not for us
  38                 return 0;
  39         }
  40
  41          // We have to save the isr status right now.
  42          // Some devices don't like having the interrupt disabled
  43          // before accessing the isr status.
  44          //
  45          // Those devices return status 0, when status access
  46          // occurs after disabling the interrupts with ath_hal_intrset.
  47          //
  48          // Note: Haiku's pcnet driver uses the same technique of
  49          //       appending a sc_lastisr field.
  50         ath_hal_getisr(ah, &intr_status);
  51         atomic_set((int32*)&sc->sc_intr_status, intr_status);
  52
  53         ath_hal_intrset(ah, 0);
  54                 // disable further intr's
  55
  56         return 1;
  57 }
  58
  59
  60 void
  61 HAIKU_REENABLE_INTERRUPTS(device_t dev)
  62 {
  63         struct ath_softc* sc = (struct ath_softc*)device_get_softc(dev);
  64         struct ath_hal* ah = sc->sc_ah;
  65
  66         ath_hal_intrset(ah, sc->sc_imask);
  67 }