av7110_hw.c

Go to the documentation of this file.

/*
 * av7110_hw.c: av7110 low level hardware access and firmware interface
 *
 * Copyright (C) 1999-2002 Ralph  Metzler
 *                       & Marcus Metzler for convergence integrated media GmbH
 *
 * originally based on code by:
 * Copyright (C) 1998,1999 Christian Theiss <[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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
 *
 * the project's page is at http://www.linuxtv.org/ 
 */

/* for debugging ARM communication: */
//#define COM_DEBUG

#include <stdarg.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/delay.h>
#include <linux/fs.h>

#include "av7110.h"
#include "av7110_hw.h"

#define _NOHANDSHAKE

/****************************************************************************
 * DEBI functions
 ****************************************************************************/

/* This DEBI code is based on the Stradis driver
   by Nathan Laredo <[email protected]> */

int av7110_debiwrite(struct av7110 *av7110, u32 config,
             int addr, u32 val, int count)
{
    struct saa7146_dev *dev = av7110->dev;

    if (count <= 0 || count > 32764) {
        printk("%s: invalid count %d\n", __func__, count);
        return -1;
    }
    if (saa7146_wait_for_debi_done(av7110->dev, 0) < 0) {
        printk("%s: wait_for_debi_done failed\n", __func__);
        return -1;
    }
    saa7146_write(dev, DEBI_CONFIG, config);
    if (count <= 4)     /* immediate transfer */
        saa7146_write(dev, DEBI_AD, val);
    else            /* block transfer */
        saa7146_write(dev, DEBI_AD, av7110->debi_bus);
    saa7146_write(dev, DEBI_COMMAND, (count << 17) | (addr & 0xffff));
    saa7146_write(dev, MC2, (2 << 16) | 2);
    return 0;
}

u32 av7110_debiread(struct av7110 *av7110, u32 config, int addr, int count)
{
    struct saa7146_dev *dev = av7110->dev;
    u32 result = 0;

    if (count > 32764 || count <= 0) {
        printk("%s: invalid count %d\n", __func__, count);
        return 0;
    }
    if (saa7146_wait_for_debi_done(av7110->dev, 0) < 0) {
        printk("%s: wait_for_debi_done #1 failed\n", __func__);
        return 0;
    }
    saa7146_write(dev, DEBI_AD, av7110->debi_bus);
    saa7146_write(dev, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));

    saa7146_write(dev, DEBI_CONFIG, config);
    saa7146_write(dev, MC2, (2 << 16) | 2);
    if (count > 4)
        return count;
    if (saa7146_wait_for_debi_done(av7110->dev, 0) < 0) {
        printk("%s: wait_for_debi_done #2 failed\n", __func__);
        return 0;
    }

    result = saa7146_read(dev, DEBI_AD);
    result &= (0xffffffffUL >> ((4 - count) * 8));
    return result;
}



/* av7110 ARM core boot stuff */
#if 0
void av7110_reset_arm(struct av7110 *av7110)
{
    saa7146_setgpio(av7110->dev, RESET_LINE, SAA7146_GPIO_OUTLO);

    /* Disable DEBI and GPIO irq */
    SAA7146_IER_DISABLE(av7110->dev, MASK_19 | MASK_03);
    SAA7146_ISR_CLEAR(av7110->dev, MASK_19 | MASK_03);

    saa7146_setgpio(av7110->dev, RESET_LINE, SAA7146_GPIO_OUTHI);
    msleep(30); /* the firmware needs some time to initialize */

    ARM_ResetMailBox(av7110);

    SAA7146_ISR_CLEAR(av7110->dev, MASK_19 | MASK_03);
    SAA7146_IER_ENABLE(av7110->dev, MASK_03);

    av7110->arm_ready = 1;
    dprintk(1, "reset ARM\n");
}
#endif  /*  0  */

static int waitdebi(struct av7110 *av7110, int adr, int state)
{
    int k;

    dprintk(4, "%p\n", av7110);

    for (k = 0; k < 100; k++) {
        if (irdebi(av7110, DEBINOSWAP, adr, 0, 2) == state)
            return 0;
        udelay(5);
    }
    return -ETIMEDOUT;
}

static int load_dram(struct av7110 *av7110, u32 *data, int len)
{
    int i;
    int blocks, rest;
    u32 base, bootblock = AV7110_BOOT_BLOCK;

    dprintk(4, "%p\n", av7110);

    blocks = len / AV7110_BOOT_MAX_SIZE;
    rest = len % AV7110_BOOT_MAX_SIZE;
    base = DRAM_START_CODE;

    for (i = 0; i < blocks; i++) {
        if (waitdebi(av7110, AV7110_BOOT_STATE, BOOTSTATE_BUFFER_EMPTY) < 0) {
            printk(KERN_ERR "dvb-ttpci: load_dram(): timeout at block %d\n", i);
            return -ETIMEDOUT;
        }
        dprintk(4, "writing DRAM block %d\n", i);
        mwdebi(av7110, DEBISWAB, bootblock,
               ((u8 *)data) + i * AV7110_BOOT_MAX_SIZE, AV7110_BOOT_MAX_SIZE);
        bootblock ^= 0x1400;
        iwdebi(av7110, DEBISWAB, AV7110_BOOT_BASE, swab32(base), 4);
        iwdebi(av7110, DEBINOSWAP, AV7110_BOOT_SIZE, AV7110_BOOT_MAX_SIZE, 2);
        iwdebi(av7110, DEBINOSWAP, AV7110_BOOT_STATE, BOOTSTATE_BUFFER_FULL, 2);
        base += AV7110_BOOT_MAX_SIZE;
    }

    if (rest > 0) {
        if (waitdebi(av7110, AV7110_BOOT_STATE, BOOTSTATE_BUFFER_EMPTY) < 0) {
            printk(KERN_ERR "dvb-ttpci: load_dram(): timeout at last block\n");
            return -ETIMEDOUT;
        }
        if (rest > 4)
            mwdebi(av7110, DEBISWAB, bootblock,
                   ((u8 *)data) + i * AV7110_BOOT_MAX_SIZE, rest);
        else
            mwdebi(av7110, DEBISWAB, bootblock,
                   ((u8 *)data) + i * AV7110_BOOT_MAX_SIZE - 4, rest + 4);

        iwdebi(av7110, DEBISWAB, AV7110_BOOT_BASE, swab32(base), 4);
        iwdebi(av7110, DEBINOSWAP, AV7110_BOOT_SIZE, rest, 2);
        iwdebi(av7110, DEBINOSWAP, AV7110_BOOT_STATE, BOOTSTATE_BUFFER_FULL, 2);
    }
    if (waitdebi(av7110, AV7110_BOOT_STATE, BOOTSTATE_BUFFER_EMPTY) < 0) {
        printk(KERN_ERR "dvb-ttpci: load_dram(): timeout after last block\n");
        return -ETIMEDOUT;
    }
    iwdebi(av7110, DEBINOSWAP, AV7110_BOOT_SIZE, 0, 2);
    iwdebi(av7110, DEBINOSWAP, AV7110_BOOT_STATE, BOOTSTATE_BUFFER_FULL, 2);
    if (waitdebi(av7110, AV7110_BOOT_STATE, BOOTSTATE_AV7110_BOOT_COMPLETE) < 0) {
        printk(KERN_ERR "dvb-ttpci: load_dram(): final handshake timeout\n");
        return -ETIMEDOUT;
    }
    return 0;
}


/* we cannot write av7110 DRAM directly, so load a bootloader into
 * the DPRAM which implements a simple boot protocol */
int av7110_bootarm(struct av7110 *av7110)
{
    const struct firmware *fw;
    const char *fw_name = "av7110/bootcode.bin";
    struct saa7146_dev *dev = av7110->dev;
    u32 ret;
    int i;

    dprintk(4, "%p\n", av7110);

    av7110->arm_ready = 0;

    saa7146_setgpio(dev, RESET_LINE, SAA7146_GPIO_OUTLO);

    /* Disable DEBI and GPIO irq */
    SAA7146_IER_DISABLE(av7110->dev, MASK_03 | MASK_19);
    SAA7146_ISR_CLEAR(av7110->dev, MASK_19 | MASK_03);

    /* enable DEBI */
    saa7146_write(av7110->dev, MC1, 0x08800880);
    saa7146_write(av7110->dev, DD1_STREAM_B, 0x00000000);
    saa7146_write(av7110->dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));

    /* test DEBI */
    iwdebi(av7110, DEBISWAP, DPRAM_BASE, 0x76543210, 4);
    /* FIXME: Why does Nexus CA require 2x iwdebi for first init? */
    iwdebi(av7110, DEBISWAP, DPRAM_BASE, 0x76543210, 4);

    if ((ret=irdebi(av7110, DEBINOSWAP, DPRAM_BASE, 0, 4)) != 0x10325476) {
        printk(KERN_ERR "dvb-ttpci: debi test in av7110_bootarm() failed: "
               "%08x != %08x (check your BIOS 'Plug&Play OS' settings)\n",
               ret, 0x10325476);
        return -1;
    }
    for (i = 0; i < 8192; i += 4)
        iwdebi(av7110, DEBISWAP, DPRAM_BASE + i, 0x00, 4);
    dprintk(2, "debi test OK\n");

    /* boot */
    dprintk(1, "load boot code\n");
    saa7146_setgpio(dev, ARM_IRQ_LINE, SAA7146_GPIO_IRQLO);
    //saa7146_setgpio(dev, DEBI_DONE_LINE, SAA7146_GPIO_INPUT);
    //saa7146_setgpio(dev, 3, SAA7146_GPIO_INPUT);

    ret = request_firmware(&fw, fw_name, &dev->pci->dev);
    if (ret) {
        printk(KERN_ERR "dvb-ttpci: Failed to load firmware \"%s\"\n",
            fw_name);
        return ret;
    }

    mwdebi(av7110, DEBISWAB, DPRAM_BASE, fw->data, fw->size);
    release_firmware(fw);
    iwdebi(av7110, DEBINOSWAP, AV7110_BOOT_STATE, BOOTSTATE_BUFFER_FULL, 2);

    if (saa7146_wait_for_debi_done(av7110->dev, 1)) {
        printk(KERN_ERR "dvb-ttpci: av7110_bootarm(): "
               "saa7146_wait_for_debi_done() timed out\n");
        return -ETIMEDOUT;
    }
    saa7146_setgpio(dev, RESET_LINE, SAA7146_GPIO_OUTHI);
    mdelay(1);

    dprintk(1, "load dram code\n");
    if (load_dram(av7110, (u32 *)av7110->bin_root, av7110->size_root) < 0) {
        printk(KERN_ERR "dvb-ttpci: av7110_bootarm(): "
               "load_dram() failed\n");
        return -1;
    }

    saa7146_setgpio(dev, RESET_LINE, SAA7146_GPIO_OUTLO);
    mdelay(1);

    dprintk(1, "load dpram code\n");
    mwdebi(av7110, DEBISWAB, DPRAM_BASE, av7110->bin_dpram, av7110->size_dpram);

    if (saa7146_wait_for_debi_done(av7110->dev, 1)) {
        printk(KERN_ERR "dvb-ttpci: av7110_bootarm(): "
               "saa7146_wait_for_debi_done() timed out after loading DRAM\n");
        return -ETIMEDOUT;
    }
    saa7146_setgpio(dev, RESET_LINE, SAA7146_GPIO_OUTHI);
    msleep(30); /* the firmware needs some time to initialize */

    //ARM_ClearIrq(av7110);
    ARM_ResetMailBox(av7110);
    SAA7146_ISR_CLEAR(av7110->dev, MASK_19 | MASK_03);
    SAA7146_IER_ENABLE(av7110->dev, MASK_03);

    av7110->arm_errors = 0;
    av7110->arm_ready = 1;
    return 0;
}
MODULE_FIRMWARE("av7110/bootcode.bin");

/****************************************************************************
 * DEBI command polling
 ****************************************************************************/

int av7110_wait_msgstate(struct av7110 *av7110, u16 flags)
{
    unsigned long start;
    u32 stat;
    int err;

    if (FW_VERSION(av7110->arm_app) <= 0x261c) {
        /* not supported by old firmware */
        msleep(50);
        return 0;
    }

    /* new firmware */
    start = jiffies;
    for (;;) {
        err = time_after(jiffies, start + ARM_WAIT_FREE);
        if (mutex_lock_interruptible(&av7110->dcomlock))
            return -ERESTARTSYS;
        stat = rdebi(av7110, DEBINOSWAP, MSGSTATE, 0, 2);
        mutex_unlock(&av7110->dcomlock);
        if ((stat & flags) == 0)
            break;
        if (err) {
            printk(KERN_ERR "%s: timeout waiting for MSGSTATE %04x\n",
                __func__, stat & flags);
            return -ETIMEDOUT;
        }
        msleep(1);
    }
    return 0;
}

static int __av7110_send_fw_cmd(struct av7110 *av7110, u16* buf, int length)
{
    int i;
    unsigned long start;
    char *type = NULL;
    u16 flags[2] = {0, 0};
    u32 stat;
    int err;

//  dprintk(4, "%p\n", av7110);

    if (!av7110->arm_ready) {
        dprintk(1, "arm not ready.\n");
        return -ENXIO;
    }

    start = jiffies;
    while (1) {
        err = time_after(jiffies, start + ARM_WAIT_FREE);
        if (rdebi(av7110, DEBINOSWAP, COMMAND, 0, 2) == 0)
            break;
        if (err) {
            printk(KERN_ERR "dvb-ttpci: %s(): timeout waiting for COMMAND idle\n", __func__);
            av7110->arm_errors++;
            return -ETIMEDOUT;
        }
        msleep(1);
    }

    if (FW_VERSION(av7110->arm_app) <= 0x261f)
        wdebi(av7110, DEBINOSWAP, COM_IF_LOCK, 0xffff, 2);

#ifndef _NOHANDSHAKE
    start = jiffies;
    while (1) {
        err = time_after(jiffies, start + ARM_WAIT_SHAKE);
        if (rdebi(av7110, DEBINOSWAP, HANDSHAKE_REG, 0, 2) == 0)
            break;
        if (err) {
            printk(KERN_ERR "dvb-ttpci: %s(): timeout waiting for HANDSHAKE_REG\n", __func__);
            return -ETIMEDOUT;
        }
        msleep(1);
    }
#endif

    switch ((buf[0] >> 8) & 0xff) {
    case COMTYPE_PIDFILTER:
    case COMTYPE_ENCODER:
    case COMTYPE_REC_PLAY:
    case COMTYPE_MPEGDECODER:
        type = "MSG";
        flags[0] = GPMQOver;
        flags[1] = GPMQFull;
        break;
    case COMTYPE_OSD:
        type = "OSD";
        flags[0] = OSDQOver;
        flags[1] = OSDQFull;
        break;
    case COMTYPE_MISC:
        if (FW_VERSION(av7110->arm_app) >= 0x261d) {
            type = "MSG";
            flags[0] = GPMQOver;
            flags[1] = GPMQBusy;
        }
        break;
    default:
        break;
    }

    if (type != NULL) {
        /* non-immediate COMMAND type */
        start = jiffies;
        for (;;) {
            err = time_after(jiffies, start + ARM_WAIT_FREE);
            stat = rdebi(av7110, DEBINOSWAP, MSGSTATE, 0, 2);
            if (stat & flags[0]) {
                printk(KERN_ERR "%s: %s QUEUE overflow\n",
                    __func__, type);
                return -1;
            }
            if ((stat & flags[1]) == 0)
                break;
            if (err) {
                printk(KERN_ERR "%s: timeout waiting on busy %s QUEUE\n",
                    __func__, type);
                av7110->arm_errors++;
                return -ETIMEDOUT;
            }
            msleep(1);
        }
    }

    for (i = 2; i < length; i++)
        wdebi(av7110, DEBINOSWAP, COMMAND + 2 * i, (u32) buf[i], 2);

    if (length)
        wdebi(av7110, DEBINOSWAP, COMMAND + 2, (u32) buf[1], 2);
    else
        wdebi(av7110, DEBINOSWAP, COMMAND + 2, 0, 2);

    wdebi(av7110, DEBINOSWAP, COMMAND, (u32) buf[0], 2);

    if (FW_VERSION(av7110->arm_app) <= 0x261f)
        wdebi(av7110, DEBINOSWAP, COM_IF_LOCK, 0x0000, 2);

#ifdef COM_DEBUG
    start = jiffies;
    while (1) {
        err = time_after(jiffies, start + ARM_WAIT_FREE);
        if (rdebi(av7110, DEBINOSWAP, COMMAND, 0, 2) == 0)
            break;
        if (err) {
            printk(KERN_ERR "dvb-ttpci: %s(): timeout waiting for COMMAND %d to complete\n",
                   __func__, (buf[0] >> 8) & 0xff);
            return -ETIMEDOUT;
        }
        msleep(1);
    }

    stat = rdebi(av7110, DEBINOSWAP, MSGSTATE, 0, 2);
    if (stat & GPMQOver) {
        printk(KERN_ERR "dvb-ttpci: %s(): GPMQOver\n", __func__);
        return -ENOSPC;
    }
    else if (stat & OSDQOver) {
        printk(KERN_ERR "dvb-ttpci: %s(): OSDQOver\n", __func__);
        return -ENOSPC;
    }
#endif

    return 0;
}

static int av7110_send_fw_cmd(struct av7110 *av7110, u16* buf, int length)
{
    int ret;

//  dprintk(4, "%p\n", av7110);

    if (!av7110->arm_ready) {
        dprintk(1, "arm not ready.\n");
        return -1;
    }
    if (mutex_lock_interruptible(&av7110->dcomlock))
        return -ERESTARTSYS;

    ret = __av7110_send_fw_cmd(av7110, buf, length);
    mutex_unlock(&av7110->dcomlock);
    if (ret && ret!=-ERESTARTSYS)
        printk(KERN_ERR "dvb-ttpci: %s(): av7110_send_fw_cmd error %d\n",
               __func__, ret);
    return ret;
}

int av7110_fw_cmd(struct av7110 *av7110, int type, int com, int num, ...)
{
    va_list args;
    u16 buf[num + 2];
    int i, ret;

//  dprintk(4, "%p\n", av7110);

    buf[0] = ((type << 8) | com);
    buf[1] = num;

    if (num) {
        va_start(args, num);
        for (i = 0; i < num; i++)
            buf[i + 2] = va_arg(args, u32);
        va_end(args);
    }

    ret = av7110_send_fw_cmd(av7110, buf, num + 2);
    if (ret && ret != -ERESTARTSYS)
        printk(KERN_ERR "dvb-ttpci: av7110_fw_cmd error %d\n", ret);
    return ret;
}

#if 0
int av7110_send_ci_cmd(struct av7110 *av7110, u8 subcom, u8 *buf, u8 len)
{
    int i, ret;
    u16 cmd[18] = { ((COMTYPE_COMMON_IF << 8) + subcom),
        16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

    dprintk(4, "%p\n", av7110);

    for(i = 0; i < len && i < 32; i++)
    {
        if(i % 2 == 0)
            cmd[(i / 2) + 2] = (u16)(buf[i]) << 8;
        else
            cmd[(i / 2) + 2] |= buf[i];
    }

    ret = av7110_send_fw_cmd(av7110, cmd, 18);
    if (ret && ret != -ERESTARTSYS)
        printk(KERN_ERR "dvb-ttpci: av7110_send_ci_cmd error %d\n", ret);
    return ret;
}
#endif  /*  0  */

int av7110_fw_request(struct av7110 *av7110, u16 *request_buf,
              int request_buf_len, u16 *reply_buf, int reply_buf_len)
{
    int err;
    s16 i;
    unsigned long start;
#ifdef COM_DEBUG
    u32 stat;
#endif

    dprintk(4, "%p\n", av7110);

    if (!av7110->arm_ready) {
        dprintk(1, "arm not ready.\n");
        return -1;
    }

    if (mutex_lock_interruptible(&av7110->dcomlock))
        return -ERESTARTSYS;

    if ((err = __av7110_send_fw_cmd(av7110, request_buf, request_buf_len)) < 0) {
        mutex_unlock(&av7110->dcomlock);
        printk(KERN_ERR "dvb-ttpci: av7110_fw_request error %d\n", err);
        return err;
    }

    start = jiffies;
    while (1) {
        err = time_after(jiffies, start + ARM_WAIT_FREE);
        if (rdebi(av7110, DEBINOSWAP, COMMAND, 0, 2) == 0)
            break;
        if (err) {
            printk(KERN_ERR "%s: timeout waiting for COMMAND to complete\n", __func__);
            mutex_unlock(&av7110->dcomlock);
            return -ETIMEDOUT;
        }
#ifdef _NOHANDSHAKE
        msleep(1);
#endif
    }

#ifndef _NOHANDSHAKE
    start = jiffies;
    while (1) {
        err = time_after(jiffies, start + ARM_WAIT_SHAKE);
        if (rdebi(av7110, DEBINOSWAP, HANDSHAKE_REG, 0, 2) == 0)
            break;
        if (err) {
            printk(KERN_ERR "%s: timeout waiting for HANDSHAKE_REG\n", __func__);
            mutex_unlock(&av7110->dcomlock);
            return -ETIMEDOUT;
        }
        msleep(1);
    }
#endif

#ifdef COM_DEBUG
    stat = rdebi(av7110, DEBINOSWAP, MSGSTATE, 0, 2);
    if (stat & GPMQOver) {
        printk(KERN_ERR "%s: GPMQOver\n", __func__);
        mutex_unlock(&av7110->dcomlock);
        return -1;
    }
    else if (stat & OSDQOver) {
        printk(KERN_ERR "%s: OSDQOver\n", __func__);
        mutex_unlock(&av7110->dcomlock);
        return -1;
    }
#endif

    for (i = 0; i < reply_buf_len; i++)
        reply_buf[i] = rdebi(av7110, DEBINOSWAP, COM_BUFF + 2 * i, 0, 2);

    mutex_unlock(&av7110->dcomlock);
    return 0;
}

static int av7110_fw_query(struct av7110 *av7110, u16 tag, u16* buf, s16 length)
{
    int ret;
    ret = av7110_fw_request(av7110, &tag, 0, buf, length);
    if (ret)
        printk(KERN_ERR "dvb-ttpci: av7110_fw_query error %d\n", ret);
    return ret;
}


/****************************************************************************
 * Firmware commands
 ****************************************************************************/

/* get version of the firmware ROM, RTSL, video ucode and ARM application  */
int av7110_firmversion(struct av7110 *av7110)
{
    u16 buf[20];
    u16 tag = ((COMTYPE_REQUEST << 8) + ReqVersion);

    dprintk(4, "%p\n", av7110);

    if (av7110_fw_query(av7110, tag, buf, 16)) {
        printk("dvb-ttpci: failed to boot firmware @ card %d\n",
               av7110->dvb_adapter.num);
        return -EIO;
    }

    av7110->arm_fw = (buf[0] << 16) + buf[1];
    av7110->arm_rtsl = (buf[2] << 16) + buf[3];
    av7110->arm_vid = (buf[4] << 16) + buf[5];
    av7110->arm_app = (buf[6] << 16) + buf[7];
    av7110->avtype = (buf[8] << 16) + buf[9];

    printk("dvb-ttpci: info @ card %d: firm %08x, rtsl %08x, vid %08x, app %08x\n",
           av7110->dvb_adapter.num, av7110->arm_fw,
           av7110->arm_rtsl, av7110->arm_vid, av7110->arm_app);

    /* print firmware capabilities */
    if (FW_CI_LL_SUPPORT(av7110->arm_app))
        printk("dvb-ttpci: firmware @ card %d supports CI link layer interface\n",
               av7110->dvb_adapter.num);
    else
        printk("dvb-ttpci: no firmware support for CI link layer interface @ card %d\n",
               av7110->dvb_adapter.num);

    return 0;
}


int av7110_diseqc_send(struct av7110 *av7110, int len, u8 *msg, unsigned long burst)
{
    int i, ret;
    u16 buf[18] = { ((COMTYPE_AUDIODAC << 8) + SendDiSEqC),
            16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

    dprintk(4, "%p\n", av7110);

    if (len > 10)
        len = 10;

    buf[1] = len + 2;
    buf[2] = len;

    if (burst != -1)
        buf[3] = burst ? 0x01 : 0x00;
    else
        buf[3] = 0xffff;

    for (i = 0; i < len; i++)
        buf[i + 4] = msg[i];

    ret = av7110_send_fw_cmd(av7110, buf, 18);
    if (ret && ret!=-ERESTARTSYS)
        printk(KERN_ERR "dvb-ttpci: av7110_diseqc_send error %d\n", ret);
    return ret;
}


#ifdef CONFIG_DVB_AV7110_OSD

static inline int SetColorBlend(struct av7110 *av7110, u8 windownr)
{
    return av7110_fw_cmd(av7110, COMTYPE_OSD, SetCBlend, 1, windownr);
}

static inline int SetBlend_(struct av7110 *av7110, u8 windownr,
             enum av7110_osd_palette_type colordepth, u16 index, u8 blending)
{
    return av7110_fw_cmd(av7110, COMTYPE_OSD, SetBlend, 4,
                 windownr, colordepth, index, blending);
}

static inline int SetColor_(struct av7110 *av7110, u8 windownr,
             enum av7110_osd_palette_type colordepth, u16 index, u16 colorhi, u16 colorlo)
{
    return av7110_fw_cmd(av7110, COMTYPE_OSD, SetColor, 5,
                 windownr, colordepth, index, colorhi, colorlo);
}

static inline int SetFont(struct av7110 *av7110, u8 windownr, u8 fontsize,
              u16 colorfg, u16 colorbg)
{
    return av7110_fw_cmd(av7110, COMTYPE_OSD, Set_Font, 4,
                 windownr, fontsize, colorfg, colorbg);
}

static int FlushText(struct av7110 *av7110)
{
    unsigned long start;
    int err;

    if (mutex_lock_interruptible(&av7110->dcomlock))
        return -ERESTARTSYS;
    start = jiffies;
    while (1) {
        err = time_after(jiffies, start + ARM_WAIT_OSD);
        if (rdebi(av7110, DEBINOSWAP, BUFF1_BASE, 0, 2) == 0)
            break;
        if (err) {
            printk(KERN_ERR "dvb-ttpci: %s(): timeout waiting for BUFF1_BASE == 0\n",
                   __func__);
            mutex_unlock(&av7110->dcomlock);
            return -ETIMEDOUT;
        }
        msleep(1);
    }
    mutex_unlock(&av7110->dcomlock);
    return 0;
}

static int WriteText(struct av7110 *av7110, u8 win, u16 x, u16 y, char *buf)
{
    int i, ret;
    unsigned long start;
    int length = strlen(buf) + 1;
    u16 cbuf[5] = { (COMTYPE_OSD << 8) + DText, 3, win, x, y };

    if (mutex_lock_interruptible(&av7110->dcomlock))
        return -ERESTARTSYS;

    start = jiffies;
    while (1) {
        ret = time_after(jiffies, start + ARM_WAIT_OSD);
        if (rdebi(av7110, DEBINOSWAP, BUFF1_BASE, 0, 2) == 0)
            break;
        if (ret) {
            printk(KERN_ERR "dvb-ttpci: %s: timeout waiting for BUFF1_BASE == 0\n",
                   __func__);
            mutex_unlock(&av7110->dcomlock);
            return -ETIMEDOUT;
        }
        msleep(1);
    }
#ifndef _NOHANDSHAKE
    start = jiffies;
    while (1) {
        ret = time_after(jiffies, start + ARM_WAIT_SHAKE);
        if (rdebi(av7110, DEBINOSWAP, HANDSHAKE_REG, 0, 2) == 0)
            break;
        if (ret) {
            printk(KERN_ERR "dvb-ttpci: %s: timeout waiting for HANDSHAKE_REG\n",
                   __func__);
            mutex_unlock(&av7110->dcomlock);
            return -ETIMEDOUT;
        }
        msleep(1);
    }
#endif
    for (i = 0; i < length / 2; i++)
        wdebi(av7110, DEBINOSWAP, BUFF1_BASE + i * 2,
              swab16(*(u16 *)(buf + 2 * i)), 2);
    if (length & 1)
        wdebi(av7110, DEBINOSWAP, BUFF1_BASE + i * 2, 0, 2);
    ret = __av7110_send_fw_cmd(av7110, cbuf, 5);
    mutex_unlock(&av7110->dcomlock);
    if (ret && ret!=-ERESTARTSYS)
        printk(KERN_ERR "dvb-ttpci: WriteText error %d\n", ret);
    return ret;
}

static inline int DrawLine(struct av7110 *av7110, u8 windownr,
               u16 x, u16 y, u16 dx, u16 dy, u16 color)
{
    return av7110_fw_cmd(av7110, COMTYPE_OSD, DLine, 6,
                 windownr, x, y, dx, dy, color);
}

static inline int DrawBlock(struct av7110 *av7110, u8 windownr,
                u16 x, u16 y, u16 dx, u16 dy, u16 color)
{
    return av7110_fw_cmd(av7110, COMTYPE_OSD, DBox, 6,
                 windownr, x, y, dx, dy, color);
}

static inline int HideWindow(struct av7110 *av7110, u8 windownr)
{
    return av7110_fw_cmd(av7110, COMTYPE_OSD, WHide, 1, windownr);
}

static inline int MoveWindowRel(struct av7110 *av7110, u8 windownr, u16 x, u16 y)
{
    return av7110_fw_cmd(av7110, COMTYPE_OSD, WMoveD, 3, windownr, x, y);
}

static inline int MoveWindowAbs(struct av7110 *av7110, u8 windownr, u16 x, u16 y)
{
    return av7110_fw_cmd(av7110, COMTYPE_OSD, WMoveA, 3, windownr, x, y);
}

static inline int DestroyOSDWindow(struct av7110 *av7110, u8 windownr)
{
    return av7110_fw_cmd(av7110, COMTYPE_OSD, WDestroy, 1, windownr);
}

static inline int CreateOSDWindow(struct av7110 *av7110, u8 windownr,
                  osd_raw_window_t disptype,
                  u16 width, u16 height)
{
    return av7110_fw_cmd(av7110, COMTYPE_OSD, WCreate, 4,
                 windownr, disptype, width, height);
}


static enum av7110_osd_palette_type bpp2pal[8] = {
    Pal1Bit, Pal2Bit, 0, Pal4Bit, 0, 0, 0, Pal8Bit
};
static osd_raw_window_t bpp2bit[8] = {
    OSD_BITMAP1, OSD_BITMAP2, 0, OSD_BITMAP4, 0, 0, 0, OSD_BITMAP8
};

static inline int WaitUntilBmpLoaded(struct av7110 *av7110)
{
    int ret = wait_event_timeout(av7110->bmpq,
                av7110->bmp_state != BMP_LOADING, 10*HZ);
    if (ret == 0) {
        printk("dvb-ttpci: warning: timeout waiting in LoadBitmap: %d, %d\n",
               ret, av7110->bmp_state);
        av7110->bmp_state = BMP_NONE;
        return -ETIMEDOUT;
    }
    return 0;
}

static inline int LoadBitmap(struct av7110 *av7110,
                 u16 dx, u16 dy, int inc, u8 __user * data)
{
    u16 format;
    int bpp;
    int i;
    int d, delta;
    u8 c;
    int ret;

    dprintk(4, "%p\n", av7110);

    format = bpp2bit[av7110->osdbpp[av7110->osdwin]];

    av7110->bmp_state = BMP_LOADING;
    if  (format == OSD_BITMAP8) {
        bpp=8; delta = 1;
    } else if (format == OSD_BITMAP4) {
        bpp=4; delta = 2;
    } else if (format == OSD_BITMAP2) {
        bpp=2; delta = 4;
    } else if (format == OSD_BITMAP1) {
        bpp=1; delta = 8;
    } else {
        av7110->bmp_state = BMP_NONE;
        return -EINVAL;
    }
    av7110->bmplen = ((dx * dy * bpp + 7) & ~7) / 8;
    av7110->bmpp = 0;
    if (av7110->bmplen > 32768) {
        av7110->bmp_state = BMP_NONE;
        return -EINVAL;
    }
    for (i = 0; i < dy; i++) {
        if (copy_from_user(av7110->bmpbuf + 1024 + i * dx, data + i * inc, dx)) {
            av7110->bmp_state = BMP_NONE;
            return -EINVAL;
        }
    }
    if (format != OSD_BITMAP8) {
        for (i = 0; i < dx * dy / delta; i++) {
            c = ((u8 *)av7110->bmpbuf)[1024 + i * delta + delta - 1];
            for (d = delta - 2; d >= 0; d--) {
                c |= (((u8 *)av7110->bmpbuf)[1024 + i * delta + d]
                      << ((delta - d - 1) * bpp));
                ((u8 *)av7110->bmpbuf)[1024 + i] = c;
            }
        }
    }
    av7110->bmplen += 1024;
    dprintk(4, "av7110_fw_cmd: LoadBmp size %d\n", av7110->bmplen);
    ret = av7110_fw_cmd(av7110, COMTYPE_OSD, LoadBmp, 3, format, dx, dy);
    if (!ret)
        ret = WaitUntilBmpLoaded(av7110);
    return ret;
}

static int BlitBitmap(struct av7110 *av7110, u16 x, u16 y)
{
    dprintk(4, "%p\n", av7110);

    return av7110_fw_cmd(av7110, COMTYPE_OSD, BlitBmp, 4, av7110->osdwin, x, y, 0);
}

static inline int ReleaseBitmap(struct av7110 *av7110)
{
    dprintk(4, "%p\n", av7110);

    if (av7110->bmp_state != BMP_LOADED && FW_VERSION(av7110->arm_app) < 0x261e)
        return -1;
    if (av7110->bmp_state == BMP_LOADING)
        dprintk(1,"ReleaseBitmap called while BMP_LOADING\n");
    av7110->bmp_state = BMP_NONE;
    return av7110_fw_cmd(av7110, COMTYPE_OSD, ReleaseBmp, 0);
}

static u32 RGB2YUV(u16 R, u16 G, u16 B)
{
    u16 y, u, v;
    u16 Y, Cr, Cb;

    y = R * 77 + G * 150 + B * 29;  /* Luma=0.299R+0.587G+0.114B 0..65535 */
    u = 2048 + B * 8 -(y >> 5); /* Cr 0..4095 */
    v = 2048 + R * 8 -(y >> 5); /* Cb 0..4095 */

    Y = y / 256;
    Cb = u / 16;
    Cr = v / 16;

    return Cr | (Cb << 16) | (Y << 8);
}

static int OSDSetColor(struct av7110 *av7110, u8 color, u8 r, u8 g, u8 b, u8 blend)
{
    int ret;

    u16 ch, cl;
    u32 yuv;

    yuv = blend ? RGB2YUV(r,g,b) : 0;
    cl = (yuv & 0xffff);
    ch = ((yuv >> 16) & 0xffff);
    ret = SetColor_(av7110, av7110->osdwin, bpp2pal[av7110->osdbpp[av7110->osdwin]],
            color, ch, cl);
    if (!ret)
        ret = SetBlend_(av7110, av7110->osdwin, bpp2pal[av7110->osdbpp[av7110->osdwin]],
                color, ((blend >> 4) & 0x0f));
    return ret;
}

static int OSDSetPalette(struct av7110 *av7110, u32 __user * colors, u8 first, u8 last)
{
    int i;
    int length = last - first + 1;

    if (length * 4 > DATA_BUFF3_SIZE)
        return -EINVAL;

    for (i = 0; i < length; i++) {
        u32 color, blend, yuv;

        if (get_user(color, colors + i))
            return -EFAULT;
        blend = (color & 0xF0000000) >> 4;
        yuv = blend ? RGB2YUV(color & 0xFF, (color >> 8) & 0xFF,
                     (color >> 16) & 0xFF) | blend : 0;
        yuv = ((yuv & 0xFFFF0000) >> 16) | ((yuv & 0x0000FFFF) << 16);
        wdebi(av7110, DEBINOSWAP, DATA_BUFF3_BASE + i * 4, yuv, 4);
    }
    return av7110_fw_cmd(av7110, COMTYPE_OSD, Set_Palette, 4,
                av7110->osdwin,
                bpp2pal[av7110->osdbpp[av7110->osdwin]],
                first, last);
}

static int OSDSetBlock(struct av7110 *av7110, int x0, int y0,
               int x1, int y1, int inc, u8 __user * data)
{
    uint w, h, bpp, bpl, size, lpb, bnum, brest;
    int i;
    int rc,release_rc;

    w = x1 - x0 + 1;
    h = y1 - y0 + 1;
    if (inc <= 0)
        inc = w;
    if (w <= 0 || w > 720 || h <= 0 || h > 576)
        return -EINVAL;
    bpp = av7110->osdbpp[av7110->osdwin] + 1;
    bpl = ((w * bpp + 7) & ~7) / 8;
    size = h * bpl;
    lpb = (32 * 1024) / bpl;
    bnum = size / (lpb * bpl);
    brest = size - bnum * lpb * bpl;

    if (av7110->bmp_state == BMP_LOADING) {
        /* possible if syscall is repeated by -ERESTARTSYS and if firmware cannot abort */
        BUG_ON (FW_VERSION(av7110->arm_app) >= 0x261e);
        rc = WaitUntilBmpLoaded(av7110);
        if (rc)
            return rc;
        /* just continue. This should work for all fw versions
         * if bnum==1 && !brest && LoadBitmap was successful
         */
    }

    rc = 0;
    for (i = 0; i < bnum; i++) {
        rc = LoadBitmap(av7110, w, lpb, inc, data);
        if (rc)
            break;
        rc = BlitBitmap(av7110, x0, y0 + i * lpb);
        if (rc)
            break;
        data += lpb * inc;
    }
    if (!rc && brest) {
        rc = LoadBitmap(av7110, w, brest / bpl, inc, data);
        if (!rc)
            rc = BlitBitmap(av7110, x0, y0 + bnum * lpb);
    }
    release_rc = ReleaseBitmap(av7110);
    if (!rc)
        rc = release_rc;
    if (rc)
        dprintk(1,"returns %d\n",rc);
    return rc;
}

int av7110_osd_cmd(struct av7110 *av7110, osd_cmd_t *dc)
{
    int ret;

    if (mutex_lock_interruptible(&av7110->osd_mutex))
        return -ERESTARTSYS;

    switch (dc->cmd) {
    case OSD_Close:
        ret = DestroyOSDWindow(av7110, av7110->osdwin);
        break;
    case OSD_Open:
        av7110->osdbpp[av7110->osdwin] = (dc->color - 1) & 7;
        ret = CreateOSDWindow(av7110, av7110->osdwin,
                bpp2bit[av7110->osdbpp[av7110->osdwin]],
                dc->x1 - dc->x0 + 1, dc->y1 - dc->y0 + 1);
        if (ret)
            break;
        if (!dc->data) {
            ret = MoveWindowAbs(av7110, av7110->osdwin, dc->x0, dc->y0);
            if (ret)
                break;
            ret = SetColorBlend(av7110, av7110->osdwin);
        }
        break;
    case OSD_Show:
        ret = MoveWindowRel(av7110, av7110->osdwin, 0, 0);
        break;
    case OSD_Hide:
        ret = HideWindow(av7110, av7110->osdwin);
        break;
    case OSD_Clear:
        ret = DrawBlock(av7110, av7110->osdwin, 0, 0, 720, 576, 0);
        break;
    case OSD_Fill:
        ret = DrawBlock(av7110, av7110->osdwin, 0, 0, 720, 576, dc->color);
        break;
    case OSD_SetColor:
        ret = OSDSetColor(av7110, dc->color, dc->x0, dc->y0, dc->x1, dc->y1);
        break;
    case OSD_SetPalette:
        if (FW_VERSION(av7110->arm_app) >= 0x2618)
            ret = OSDSetPalette(av7110, dc->data, dc->color, dc->x0);
        else {
            int i, len = dc->x0-dc->color+1;
            u8 __user *colors = (u8 __user *)dc->data;
            u8 r, g = 0, b = 0, blend = 0;
            ret = 0;
            for (i = 0; i<len; i++) {
                if (get_user(r, colors + i * 4) ||
                    get_user(g, colors + i * 4 + 1) ||
                    get_user(b, colors + i * 4 + 2) ||
                    get_user(blend, colors + i * 4 + 3)) {
                    ret = -EFAULT;
                    break;
                    }
                ret = OSDSetColor(av7110, dc->color + i, r, g, b, blend);
                if (ret)
                    break;
            }
        }
        break;
    case OSD_SetPixel:
        ret = DrawLine(av7110, av7110->osdwin,
             dc->x0, dc->y0, 0, 0, dc->color);
        break;
    case OSD_SetRow:
        dc->y1 = dc->y0;
        /* fall through */
    case OSD_SetBlock:
        ret = OSDSetBlock(av7110, dc->x0, dc->y0, dc->x1, dc->y1, dc->color, dc->data);
        break;
    case OSD_FillRow:
        ret = DrawBlock(av7110, av7110->osdwin, dc->x0, dc->y0,
              dc->x1-dc->x0+1, dc->y1, dc->color);
        break;
    case OSD_FillBlock:
        ret = DrawBlock(av7110, av7110->osdwin, dc->x0, dc->y0,
              dc->x1 - dc->x0 + 1, dc->y1 - dc->y0 + 1, dc->color);
        break;
    case OSD_Line:
        ret = DrawLine(av7110, av7110->osdwin,
             dc->x0, dc->y0, dc->x1 - dc->x0, dc->y1 - dc->y0, dc->color);
        break;
    case OSD_Text:
    {
        char textbuf[240];

        if (strncpy_from_user(textbuf, dc->data, 240) < 0) {
            ret = -EFAULT;
            break;
        }
        textbuf[239] = 0;
        if (dc->x1 > 3)
            dc->x1 = 3;
        ret = SetFont(av7110, av7110->osdwin, dc->x1,
            (u16) (dc->color & 0xffff), (u16) (dc->color >> 16));
        if (!ret)
            ret = FlushText(av7110);
        if (!ret)
            ret = WriteText(av7110, av7110->osdwin, dc->x0, dc->y0, textbuf);
        break;
    }
    case OSD_SetWindow:
        if (dc->x0 < 1 || dc->x0 > 7)
            ret = -EINVAL;
        else {
            av7110->osdwin = dc->x0;
            ret = 0;
        }
        break;
    case OSD_MoveWindow:
        ret = MoveWindowAbs(av7110, av7110->osdwin, dc->x0, dc->y0);
        if (!ret)
            ret = SetColorBlend(av7110, av7110->osdwin);
        break;
    case OSD_OpenRaw:
        if (dc->color < OSD_BITMAP1 || dc->color > OSD_CURSOR) {
            ret = -EINVAL;
            break;
        }
        if (dc->color >= OSD_BITMAP1 && dc->color <= OSD_BITMAP8HR)
            av7110->osdbpp[av7110->osdwin] = (1 << (dc->color & 3)) - 1;
        else
            av7110->osdbpp[av7110->osdwin] = 0;
        ret = CreateOSDWindow(av7110, av7110->osdwin, (osd_raw_window_t)dc->color,
                dc->x1 - dc->x0 + 1, dc->y1 - dc->y0 + 1);
        if (ret)
            break;
        if (!dc->data) {
            ret = MoveWindowAbs(av7110, av7110->osdwin, dc->x0, dc->y0);
            if (!ret)
                ret = SetColorBlend(av7110, av7110->osdwin);
        }
        break;
    default:
        ret = -EINVAL;
        break;
    }

    mutex_unlock(&av7110->osd_mutex);
    if (ret==-ERESTARTSYS)
        dprintk(1, "av7110_osd_cmd(%d) returns with -ERESTARTSYS\n",dc->cmd);
    else if (ret)
        dprintk(1, "av7110_osd_cmd(%d) returns with %d\n",dc->cmd,ret);

    return ret;
}

int av7110_osd_capability(struct av7110 *av7110, osd_cap_t *cap)
{
    switch (cap->cmd) {
    case OSD_CAP_MEMSIZE:
        if (FW_4M_SDRAM(av7110->arm_app))
            cap->val = 1000000;
        else
            cap->val = 92000;
        return 0;
    default:
        return -EINVAL;
    }
}
#endif /* CONFIG_DVB_AV7110_OSD */