mantis_core.c

Go to the documentation of this file.

/*
    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 "mantis_common.h"
#include "mantis_core.h"
#include "mantis_vp1033.h"
#include "mantis_vp1034.h"
#include "mantis_vp1041.h"
#include "mantis_vp2033.h"
#include "mantis_vp2040.h"
#include "mantis_vp3030.h"

static int read_eeprom_byte(struct mantis_pci *mantis, u8 *data, u8 length)
{
    int err;
    struct i2c_msg msg[] = {
        {
            .addr = 0x50,
            .flags = 0,
            .buf = data,
            .len = 1
        }, {
            .addr = 0x50,
            .flags = I2C_M_RD,
            .buf = data,
            .len = length
        },
    };

    err = i2c_transfer(&mantis->adapter, msg, 2);
    if (err < 0) {
        dprintk(verbose, MANTIS_ERROR, 1,
            "ERROR: i2c read: < err=%i d0=0x%02x d1=0x%02x >",
            err, data[0], data[1]);

        return err;
    }

    return 0;
}

static int write_eeprom_byte(struct mantis_pci *mantis, u8 *data, u8 length)
{
    int err;

    struct i2c_msg msg = {
        .addr = 0x50,
        .flags = 0,
        .buf = data,
        .len = length
    };

    err = i2c_transfer(&mantis->adapter, &msg, 1);
    if (err < 0) {
        dprintk(verbose, MANTIS_ERROR, 1,
            "ERROR: i2c write: < err=%i length=0x%02x d0=0x%02x, d1=0x%02x >",
            err, length, data[0], data[1]);

        return err;
    }

    return 0;
}

static int get_mac_address(struct mantis_pci *mantis)
{
    int err;

    mantis->mac_address[0] = 0x08;
    err = read_eeprom_byte(mantis, &mantis->mac_address[0], 6);
    if (err < 0) {
        dprintk(verbose, MANTIS_ERROR, 1, "Mantis EEPROM read error");

        return err;
    }
    dprintk(verbose, MANTIS_ERROR, 0,
        "    MAC Address=[%pM]\n", mantis->mac_address);

    return 0;
}

#define MANTIS_MODEL_UNKNOWN    "UNKNOWN"
#define MANTIS_DEV_UNKNOWN  "UNKNOWN"

struct mantis_hwconfig unknown_device = {
    .model_name = MANTIS_MODEL_UNKNOWN,
    .dev_type   = MANTIS_DEV_UNKNOWN,
};

static void mantis_load_config(struct mantis_pci *mantis)
{
    switch (mantis->subsystem_device) {
    case MANTIS_VP_1033_DVB_S:  /* VP-1033 */
        mantis->hwconfig = &vp1033_mantis_config;
        break;
    case MANTIS_VP_1034_DVB_S:  /* VP-1034 */
        mantis->hwconfig = &vp1034_mantis_config;
        break;
    case MANTIS_VP_1041_DVB_S2: /* VP-1041 */
    case TECHNISAT_SKYSTAR_HD2:
        mantis->hwconfig = &vp1041_mantis_config;
        break;
    case MANTIS_VP_2033_DVB_C:  /* VP-2033 */
        mantis->hwconfig = &vp2033_mantis_config;
        break;
    case MANTIS_VP_2040_DVB_C:  /* VP-2040 */
    case CINERGY_C: /* VP-2040 clone */
    case TECHNISAT_CABLESTAR_HD2:
        mantis->hwconfig = &vp2040_mantis_config;
        break;
    case MANTIS_VP_3030_DVB_T:  /* VP-3030 */
        mantis->hwconfig = &vp3030_mantis_config;
        break;
    default:
        mantis->hwconfig = &unknown_device;
        break;
    }
}

int mantis_core_init(struct mantis_pci *mantis)
{
    int err = 0;

    mantis_load_config(mantis);
    dprintk(verbose, MANTIS_ERROR, 0, "found a %s PCI %s device on (%02x:%02x.%x),\n",
        mantis->hwconfig->model_name, mantis->hwconfig->dev_type,
        mantis->pdev->bus->number, PCI_SLOT(mantis->pdev->devfn), PCI_FUNC(mantis->pdev->devfn));
    dprintk(verbose, MANTIS_ERROR, 0, "    Mantis Rev %d [%04x:%04x], ",
        mantis->revision,
        mantis->subsystem_vendor, mantis->subsystem_device);
    dprintk(verbose, MANTIS_ERROR, 0,
        "irq: %d, latency: %d\n    memory: 0x%lx, mmio: 0x%p\n",
        mantis->pdev->irq, mantis->latency,
        mantis->mantis_addr, mantis->mantis_mmio);

    err = mantis_i2c_init(mantis);
    if (err < 0) {
        dprintk(verbose, MANTIS_ERROR, 1, "Mantis I2C init failed");
        return err;
    }
    err = get_mac_address(mantis);
    if (err < 0) {
        dprintk(verbose, MANTIS_ERROR, 1, "get MAC address failed");
        return err;
    }
    err = mantis_dma_init(mantis);
    if (err < 0) {
        dprintk(verbose, MANTIS_ERROR, 1, "Mantis DMA init failed");
        return err;
    }
    err = mantis_dvb_init(mantis);
    if (err < 0) {
        dprintk(verbose, MANTIS_DEBUG, 1, "Mantis DVB init failed");
        return err;
    }
    err = mantis_uart_init(mantis);
    if (err < 0) {
        dprintk(verbose, MANTIS_DEBUG, 1, "Mantis UART init failed");
        return err;
    }

    return 0;
}

int mantis_core_exit(struct mantis_pci *mantis)
{
    mantis_dma_stop(mantis);
    dprintk(verbose, MANTIS_ERROR, 1, "DMA engine stopping");

    mantis_uart_exit(mantis);
    dprintk(verbose, MANTIS_ERROR, 1, "UART exit failed");

    if (mantis_dma_exit(mantis) < 0)
        dprintk(verbose, MANTIS_ERROR, 1, "DMA exit failed");
    if (mantis_dvb_exit(mantis) < 0)
        dprintk(verbose, MANTIS_ERROR, 1, "DVB exit failed");
    if (mantis_i2c_exit(mantis) < 0)
        dprintk(verbose, MANTIS_ERROR, 1, "I2C adapter delete.. failed");

    return 0;
}

/* Turn the given bit on or off. */
void gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value)
{
    u32 cur;

    cur = mmread(MANTIS_GPIF_ADDR);
    if (value)
        mantis->gpio_status = cur | (1 << bitpos);
    else
        mantis->gpio_status = cur & (~(1 << bitpos));

    mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR);
    mmwrite(0x00, MANTIS_GPIF_DOUT);
    udelay(100);
}

/* direction = 0 , no CI passthrough ; 1 , CI passthrough */
void mantis_set_direction(struct mantis_pci *mantis, int direction)
{
    u32 reg;

    reg = mmread(0x28);
    dprintk(verbose, MANTIS_DEBUG, 1, "TS direction setup");
    if (direction == 0x01) {
        /* to CI */
        reg |= 0x04;
        mmwrite(reg, 0x28);
        reg &= 0xff - 0x04;
        mmwrite(reg, 0x28);
    } else {
        reg &= 0xff - 0x04;
        mmwrite(reg, 0x28);
        reg |= 0x04;
        mmwrite(reg, 0x28);
    }
}