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av7110_hw.c

/*
 * 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 <mistert@rz.fh-augsburg.de>
 *
 * 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/dvb/
 */

/* 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 <laredo@gnu.org> */

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", __FUNCTION__, count);
            return -1;
      }
      if (saa7146_wait_for_debi_done(av7110->dev, 0) < 0) {
            printk("%s: wait_for_debi_done failed\n", __FUNCTION__);
            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", __FUNCTION__, count);
            return 0;
      }
      if (saa7146_wait_for_debi_done(av7110->dev, 0) < 0) {
            printk("%s: wait_for_debi_done #1 failed\n", __FUNCTION__);
            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", __FUNCTION__);
            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 */
static u8 bootcode[] = {
  0xea, 0x00, 0x00, 0x0e, 0xe1, 0xb0, 0xf0, 0x0e, 0xe2, 0x5e, 0xf0, 0x04,
  0xe2, 0x5e, 0xf0, 0x04, 0xe2, 0x5e, 0xf0, 0x08, 0xe2, 0x5e, 0xf0, 0x04,
  0xe2, 0x5e, 0xf0, 0x04, 0xe2, 0x5e, 0xf0, 0x04, 0x2c, 0x00, 0x00, 0x24,
  0x00, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00, 0x2c, 0x00, 0x00, 0x34,
  0x00, 0x00, 0x00, 0x00, 0xa5, 0xa5, 0x5a, 0x5a, 0x00, 0x1f, 0x15, 0x55,
  0x00, 0x00, 0x00, 0x09, 0xe5, 0x9f, 0xd0, 0x7c, 0xe5, 0x9f, 0x40, 0x74,
  0xe3, 0xa0, 0x00, 0x00, 0xe5, 0x84, 0x00, 0x00, 0xe5, 0x84, 0x00, 0x04,
  0xe5, 0x9f, 0x10, 0x70, 0xe5, 0x9f, 0x20, 0x70, 0xe5, 0x9f, 0x30, 0x64,
  0xe8, 0xb1, 0x1f, 0xe0, 0xe8, 0xa3, 0x1f, 0xe0, 0xe1, 0x51, 0x00, 0x02,
  0xda, 0xff, 0xff, 0xfb, 0xe5, 0x9f, 0xf0, 0x50, 0xe1, 0xd4, 0x10, 0xb0,
  0xe3, 0x51, 0x00, 0x00, 0x0a, 0xff, 0xff, 0xfc, 0xe1, 0xa0, 0x10, 0x0d,
  0xe5, 0x94, 0x30, 0x04, 0xe1, 0xd4, 0x20, 0xb2, 0xe2, 0x82, 0x20, 0x3f,
  0xe1, 0xb0, 0x23, 0x22, 0x03, 0xa0, 0x00, 0x02, 0xe1, 0xc4, 0x00, 0xb0,
  0x0a, 0xff, 0xff, 0xf4, 0xe8, 0xb1, 0x1f, 0xe0, 0xe8, 0xa3, 0x1f, 0xe0,
  0xe8, 0xb1, 0x1f, 0xe0, 0xe8, 0xa3, 0x1f, 0xe0, 0xe2, 0x52, 0x20, 0x01,
  0x1a, 0xff, 0xff, 0xf9, 0xe2, 0x2d, 0xdb, 0x05, 0xea, 0xff, 0xff, 0xec,
  0x2c, 0x00, 0x03, 0xf8, 0x2c, 0x00, 0x04, 0x00, 0x9e, 0x00, 0x08, 0x00,
  0x2c, 0x00, 0x00, 0x74, 0x2c, 0x00, 0x00, 0xc0
};

int av7110_bootarm(struct av7110 *av7110)
{
      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);

      mwdebi(av7110, DEBISWAB, DPRAM_BASE, bootcode, sizeof(bootcode));
      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;
}


/****************************************************************************
 * 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",
                        __FUNCTION__, 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", __FUNCTION__);
                  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", __FUNCTION__);
                  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",
                              __FUNCTION__, type);
                        return -1;
                  }
                  if ((stat & flags[1]) == 0)
                        break;
                  if (err) {
                        printk(KERN_ERR "%s: timeout waiting on busy %s QUEUE\n",
                              __FUNCTION__, type);
                        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",
                         __FUNCTION__, (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", __FUNCTION__);
            return -ENOSPC;
      }
      else if (stat & OSDQOver) {
            printk(KERN_ERR "dvb-ttpci: %s(): OSDQOver\n", __FUNCTION__);
            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",
                   __FUNCTION__, 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", __FUNCTION__);
                  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", __FUNCTION__);
                  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", __FUNCTION__);
            mutex_unlock(&av7110->dcomlock);
            return -1;
      }
      else if (stat & OSDQOver) {
            printk(KERN_ERR "%s: OSDQOver\n", __FUNCTION__);
            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",
                         __FUNCTION__);
                  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",
                         __FUNCTION__);
                  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",
                         __FUNCTION__);
                  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_interruptible_timeout(av7110->bmpq,
                        av7110->bmp_state != BMP_LOADING, 10*HZ);
      if (ret == -ERESTARTSYS)
            return ret;
      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, b, blend;
                  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 */

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