r92ce_rx.c

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    1 /*      $OpenBSD: if_rtwn.c,v 1.6 2015/08/28 00:03:53 deraadt Exp $     */
    2 
    3 /*-
    4  * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
    5  * Copyright (c) 2015 Stefan Sperling <stsp@openbsd.org>
    6  * Copyright (c) 2016 Andriy Voskoboinyk <avos@FreeBSD.org>
    7  *
    8  * Permission to use, copy, modify, and distribute this software for any
    9  * purpose with or without fee is hereby granted, provided that the above
   10  * copyright notice and this permission notice appear in all copies.
   11  *
   12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   19  */
   20 
   21 #include <sys/cdefs.h>
   22 __FBSDID("$FreeBSD$");
   23 
   24 #include "opt_wlan.h"
   25 
   26 #include <sys/param.h>
   27 #include <sys/lock.h>
   28 #include <sys/mutex.h>
   29 #include <sys/mbuf.h>
   30 #include <sys/kernel.h>
   31 #include <sys/socket.h>
   32 #include <sys/systm.h>
   33 #include <sys/malloc.h>
   34 #include <sys/queue.h>
   35 #include <sys/taskqueue.h>
   36 #include <sys/bus.h>
   37 #include <sys/endian.h>
   38 #include <sys/linker.h>
   39 
   40 #include <machine/bus.h>
   41 #include <machine/resource.h>
   42 #include <sys/rman.h>
   43 
   44 #include <net/if.h>
   45 #include <net/ethernet.h>
   46 #include <net/if_media.h>
   47 
   48 #include <net80211/ieee80211_var.h>
   49 #include <net80211/ieee80211_radiotap.h>
   50 
   51 #include <dev/rtwn/if_rtwnvar.h>
   52 #include <dev/rtwn/if_rtwn_debug.h>
   53 
   54 #include <dev/rtwn/pci/rtwn_pci_var.h>
   55 
   56 #include <dev/rtwn/rtl8192c/pci/r92ce.h>
   57 #include <dev/rtwn/rtl8192c/pci/r92ce_reg.h>
   58 
   59 int
   60 r92ce_get_intr_status(struct rtwn_pci_softc *pc, int *rings)
   61 {
   62         struct rtwn_softc *sc = &pc->pc_sc;
   63         uint32_t status;
   64         int ret;
   65 
   66         *rings = 0;
   67         status = rtwn_read_4(sc, R92C_HISR);
   68         RTWN_DPRINTF(sc, RTWN_DEBUG_INTR, "%s: HISR %08X, HISRE %04X\n",
   69             __func__, status, rtwn_read_2(sc, R92C_HISRE));
   70         if (status == 0 || status == 0xffffffff)
   71                 return (0);
   72 
   73         /* Disable interrupts. */
   74         rtwn_write_4(sc, R92C_HIMR, 0);
   75 
   76         /* Ack interrupts. */
   77         rtwn_write_4(sc, R92C_HISR, status);
   78 
   79         if (status & R92C_IMR_BDOK)
   80                 *rings |= (1 << RTWN_PCI_BEACON_QUEUE);
   81         if (status & R92C_IMR_HIGHDOK)
   82                 *rings |= (1 << RTWN_PCI_HIGH_QUEUE);
   83         if (status & R92C_IMR_MGNTDOK)
   84                 *rings |= (1 << RTWN_PCI_MGNT_QUEUE);
   85         if (status & R92C_IMR_BKDOK)
   86                 *rings |= (1 << RTWN_PCI_BK_QUEUE);
   87         if (status & R92C_IMR_BEDOK)
   88                 *rings |= (1 << RTWN_PCI_BE_QUEUE);
   89         if (status & R92C_IMR_VIDOK)
   90                 *rings |= (1 << RTWN_PCI_VI_QUEUE);
   91         if (status & R92C_IMR_VODOK)
   92                 *rings |= (1 << RTWN_PCI_VO_QUEUE);
   93 
   94         ret = 0;
   95         if (status & R92C_IMR_RXFOVW)
   96                 ret |= RTWN_PCI_INTR_RX_OVERFLOW;
   97         if (status & R92C_IMR_RDU)
   98                 ret |= RTWN_PCI_INTR_RX_DESC_UNAVAIL;
   99         if (status & R92C_IMR_ROK)
  100                 ret |= RTWN_PCI_INTR_RX_DONE;
  101         if (status & R92C_IMR_TXFOVW)
  102                 ret |= RTWN_PCI_INTR_TX_OVERFLOW;
  103         if (status & R92C_IMR_PSTIMEOUT)
  104                 ret |= RTWN_PCI_INTR_PS_TIMEOUT;
  105 
  106         return (ret);
  107 }
  108 
  109 #define R92C_INT_ENABLE (R92C_IMR_ROK | R92C_IMR_VODOK | R92C_IMR_VIDOK | \
  110                         R92C_IMR_BEDOK | R92C_IMR_BKDOK | R92C_IMR_MGNTDOK | \
  111                         R92C_IMR_HIGHDOK | R92C_IMR_BDOK | R92C_IMR_RDU | \
  112                         R92C_IMR_RXFOVW)
  113 void
  114 r92ce_enable_intr(struct rtwn_pci_softc *pc)
  115 {
  116         struct rtwn_softc *sc = &pc->pc_sc;
  117 
  118         /* Enable interrupts. */
  119         rtwn_write_4(sc, R92C_HIMR, R92C_INT_ENABLE);
  120 }
  121 
  122 void
  123 r92ce_start_xfers(struct rtwn_softc *sc)
  124 {
  125         /* Clear pending interrupts. */
  126         rtwn_write_4(sc, R92C_HISR, 0xffffffff);
  127 
  128         /* Enable interrupts. */
  129         rtwn_write_4(sc, R92C_HIMR, R92C_INT_ENABLE);
  130 }
  131 #undef R92C_INT_ENABLE

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FreeBSD/Linux Kernel Cross Reference sys/dev/rtwn/rtl8192c/pci/r92ce_rx.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/rtwn/rtl8192c/pci/r92ce_rx.c