hopper_cards.c

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/*
    Hopper 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/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <asm/irq.h>
#include <linux/interrupt.h>

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

#include "mantis_common.h"
#include "hopper_vp3028.h"
#include "mantis_dma.h"
#include "mantis_dvb.h"
#include "mantis_uart.h"
#include "mantis_ioc.h"
#include "mantis_pci.h"
#include "mantis_i2c.h"
#include "mantis_reg.h"

static unsigned int verbose;
module_param(verbose, int, 0644);
MODULE_PARM_DESC(verbose, "verbose startup messages, default is 0 (no)");

#define DRIVER_NAME "Hopper"

static char *label[10] = {
    "DMA",
    "IRQ-0",
    "IRQ-1",
    "OCERR",
    "PABRT",
    "RIPRR",
    "PPERR",
    "FTRGT",
    "RISCI",
    "RACK"
};

static int devs;

static irqreturn_t hopper_irq_handler(int irq, void *dev_id)
{
    u32 stat = 0, mask = 0;
    u32 rst_stat = 0, rst_mask = 0;

    struct mantis_pci *mantis;
    struct mantis_ca *ca;

    mantis = (struct mantis_pci *) dev_id;
    if (unlikely(mantis == NULL)) {
        dprintk(MANTIS_ERROR, 1, "Mantis == NULL");
        return IRQ_NONE;
    }
    ca = mantis->mantis_ca;

    stat = mmread(MANTIS_INT_STAT);
    mask = mmread(MANTIS_INT_MASK);
    if (!(stat & mask))
        return IRQ_NONE;

    rst_mask  = MANTIS_GPIF_WRACK  |
            MANTIS_GPIF_OTHERR |
            MANTIS_SBUF_WSTO   |
            MANTIS_GPIF_EXTIRQ;

    rst_stat  = mmread(MANTIS_GPIF_STATUS);
    rst_stat &= rst_mask;
    mmwrite(rst_stat, MANTIS_GPIF_STATUS);

    mantis->mantis_int_stat = stat;
    mantis->mantis_int_mask = mask;
    dprintk(MANTIS_DEBUG, 0, "\n-- Stat=<%02x> Mask=<%02x> --", stat, mask);
    if (stat & MANTIS_INT_RISCEN) {
        dprintk(MANTIS_DEBUG, 0, "<%s>", label[0]);
    }
    if (stat & MANTIS_INT_IRQ0) {
        dprintk(MANTIS_DEBUG, 0, "<%s>", label[1]);
        mantis->gpif_status = rst_stat;
        wake_up(&ca->hif_write_wq);
        schedule_work(&ca->hif_evm_work);
    }
    if (stat & MANTIS_INT_IRQ1) {
        dprintk(MANTIS_DEBUG, 0, "<%s>", label[2]);
        schedule_work(&mantis->uart_work);
    }
    if (stat & MANTIS_INT_OCERR) {
        dprintk(MANTIS_DEBUG, 0, "<%s>", label[3]);
    }
    if (stat & MANTIS_INT_PABORT) {
        dprintk(MANTIS_DEBUG, 0, "<%s>", label[4]);
    }
    if (stat & MANTIS_INT_RIPERR) {
        dprintk(MANTIS_DEBUG, 0, "<%s>", label[5]);
    }
    if (stat & MANTIS_INT_PPERR) {
        dprintk(MANTIS_DEBUG, 0, "<%s>", label[6]);
    }
    if (stat & MANTIS_INT_FTRGT) {
        dprintk(MANTIS_DEBUG, 0, "<%s>", label[7]);
    }
    if (stat & MANTIS_INT_RISCI) {
        dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]);
        mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28;
        tasklet_schedule(&mantis->tasklet);
    }
    if (stat & MANTIS_INT_I2CDONE) {
        dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]);
        wake_up(&mantis->i2c_wq);
    }
    mmwrite(stat, MANTIS_INT_STAT);
    stat &= ~(MANTIS_INT_RISCEN   | MANTIS_INT_I2CDONE |
          MANTIS_INT_I2CRACK  | MANTIS_INT_PCMCIA7 |
          MANTIS_INT_PCMCIA6  | MANTIS_INT_PCMCIA5 |
          MANTIS_INT_PCMCIA4  | MANTIS_INT_PCMCIA3 |
          MANTIS_INT_PCMCIA2  | MANTIS_INT_PCMCIA1 |
          MANTIS_INT_PCMCIA0  | MANTIS_INT_IRQ1    |
          MANTIS_INT_IRQ0     | MANTIS_INT_OCERR   |
          MANTIS_INT_PABORT   | MANTIS_INT_RIPERR  |
          MANTIS_INT_PPERR    | MANTIS_INT_FTRGT   |
          MANTIS_INT_RISCI);

    if (stat)
        dprintk(MANTIS_DEBUG, 0, "<Unknown> Stat=<%02x> Mask=<%02x>", stat, mask);

    dprintk(MANTIS_DEBUG, 0, "\n");
    return IRQ_HANDLED;
}

static int __devinit hopper_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
{
    struct mantis_pci *mantis;
    struct mantis_hwconfig *config;
    int err = 0;

    mantis = kzalloc(sizeof(struct mantis_pci), GFP_KERNEL);
    if (mantis == NULL) {
        printk(KERN_ERR "%s ERROR: Out of memory\n", __func__);
        err = -ENOMEM;
        goto fail0;
    }

    mantis->num     = devs;
    mantis->verbose     = verbose;
    mantis->pdev        = pdev;
    config          = (struct mantis_hwconfig *) pci_id->driver_data;
    config->irq_handler = &hopper_irq_handler;
    mantis->hwconfig    = config;

    err = mantis_pci_init(mantis);
    if (err) {
        dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI initialization failed <%d>", err);
        goto fail1;
    }

    err = mantis_stream_control(mantis, STREAM_TO_HIF);
    if (err < 0) {
        dprintk(MANTIS_ERROR, 1, "ERROR: Mantis stream control failed <%d>", err);
        goto fail1;
    }

    err = mantis_i2c_init(mantis);
    if (err < 0) {
        dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C initialization failed <%d>", err);
        goto fail2;
    }

    err = mantis_get_mac(mantis);
    if (err < 0) {
        dprintk(MANTIS_ERROR, 1, "ERROR: Mantis MAC address read failed <%d>", err);
        goto fail2;
    }

    err = mantis_dma_init(mantis);
    if (err < 0) {
        dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA initialization failed <%d>", err);
        goto fail3;
    }

    err = mantis_dvb_init(mantis);
    if (err < 0) {
        dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DVB initialization failed <%d>", err);
        goto fail4;
    }
    devs++;

    return err;

fail4:
    dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA exit! <%d>", err);
    mantis_dma_exit(mantis);

fail3:
    dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C exit! <%d>", err);
    mantis_i2c_exit(mantis);

fail2:
    dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI exit! <%d>", err);
    mantis_pci_exit(mantis);

fail1:
    dprintk(MANTIS_ERROR, 1, "ERROR: Mantis free! <%d>", err);
    kfree(mantis);

fail0:
    return err;
}

static void __devexit hopper_pci_remove(struct pci_dev *pdev)
{
    struct mantis_pci *mantis = pci_get_drvdata(pdev);

    if (mantis) {
        mantis_dvb_exit(mantis);
        mantis_dma_exit(mantis);
        mantis_i2c_exit(mantis);
        mantis_pci_exit(mantis);
        kfree(mantis);
    }
    return;

}

static struct pci_device_id hopper_pci_table[] = {
    MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3028_DVB_T, &vp3028_config),
    { }
};

MODULE_DEVICE_TABLE(pci, hopper_pci_table);

static struct pci_driver hopper_pci_driver = {
    .name       = DRIVER_NAME,
    .id_table   = hopper_pci_table,
    .probe      = hopper_pci_probe,
    .remove     = hopper_pci_remove,
};

static int __devinit hopper_init(void)
{
    return pci_register_driver(&hopper_pci_driver);
}

static void __devexit hopper_exit(void)
{
    return pci_unregister_driver(&hopper_pci_driver);
}

module_init(hopper_init);
module_exit(hopper_exit);

MODULE_DESCRIPTION("HOPPER driver");
MODULE_AUTHOR("Manu Abraham");
MODULE_LICENSE("GPL");