mantis_evm.c

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/*
    Mantis PCI bridge driver

    Copyright (C) Manu Abraham ([email protected])

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include <linux/kernel.h>

#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <asm/io.h>

#include "dmxdev.h"
#include "dvbdev.h"
#include "dvb_demux.h"
#include "dvb_frontend.h"
#include "dvb_net.h"

#include "mantis_common.h"
#include "mantis_link.h"
#include "mantis_hif.h"
#include "mantis_reg.h"

static void mantis_hifevm_work(struct work_struct *work)
{
    struct mantis_ca *ca = container_of(work, struct mantis_ca, hif_evm_work);
    struct mantis_pci *mantis = ca->ca_priv;

    u32 gpif_stat;

    gpif_stat = mmread(MANTIS_GPIF_STATUS);

    if (gpif_stat & MANTIS_GPIF_DETSTAT) {
        if (gpif_stat & MANTIS_CARD_PLUGIN) {
            dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): CAM Plugin", mantis->num);
            mmwrite(0xdada0000, MANTIS_CARD_RESET);
            mantis_event_cam_plugin(ca);
            dvb_ca_en50221_camchange_irq(&ca->en50221,
                             0,
                             DVB_CA_EN50221_CAMCHANGE_INSERTED);
        }
    } else {
        if (gpif_stat & MANTIS_CARD_PLUGOUT) {
            dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): CAM Unplug", mantis->num);
            mmwrite(0xdada0000, MANTIS_CARD_RESET);
            mantis_event_cam_unplug(ca);
            dvb_ca_en50221_camchange_irq(&ca->en50221,
                             0,
                             DVB_CA_EN50221_CAMCHANGE_REMOVED);
        }
    }

    if (mantis->gpif_status & MANTIS_GPIF_EXTIRQ)
        dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Ext IRQ", mantis->num);

    if (mantis->gpif_status & MANTIS_SBUF_WSTO)
        dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Timeout", mantis->num);

    if (mantis->gpif_status & MANTIS_GPIF_OTHERR)
        dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Alignment Error", mantis->num);

    if (gpif_stat & MANTIS_SBUF_OVFLW)
        dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Overflow", mantis->num);

    if (gpif_stat & MANTIS_GPIF_BRRDY)
        dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Read Ready", mantis->num);

    if (gpif_stat & MANTIS_GPIF_INTSTAT)
        dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): GPIF IRQ", mantis->num);

    if (gpif_stat & MANTIS_SBUF_EMPTY)
        dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Empty", mantis->num);

    if (gpif_stat & MANTIS_SBUF_OPDONE) {
        dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer operation complete", mantis->num);
        ca->sbuf_status = MANTIS_SBUF_DATA_AVAIL;
        ca->hif_event = MANTIS_SBUF_OPDONE;
        wake_up(&ca->hif_opdone_wq);
    }
}

int mantis_evmgr_init(struct mantis_ca *ca)
{
    struct mantis_pci *mantis = ca->ca_priv;

    dprintk(MANTIS_DEBUG, 1, "Initializing Mantis Host I/F Event manager");
    INIT_WORK(&ca->hif_evm_work, mantis_hifevm_work);
    mantis_pcmcia_init(ca);
    schedule_work(&ca->hif_evm_work);
    mantis_hif_init(ca);
    return 0;
}

void mantis_evmgr_exit(struct mantis_ca *ca)
{
    struct mantis_pci *mantis = ca->ca_priv;

    dprintk(MANTIS_DEBUG, 1, "Mantis Host I/F Event manager exiting");
    flush_work(&ca->hif_evm_work);
    mantis_hif_exit(ca);
    mantis_pcmcia_exit(ca);
}