hostap_download.c

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static int prism2_enable_aux_port(struct net_device *dev, int enable)
{
    u16 val, reg;
    int i, tries;
    unsigned long flags;
    struct hostap_interface *iface;
    local_info_t *local;

    iface = netdev_priv(dev);
    local = iface->local;

    if (local->no_pri) {
        if (enable) {
            PDEBUG(DEBUG_EXTRA2, "%s: no PRI f/w - assuming Aux "
                   "port is already enabled\n", dev->name);
        }
        return 0;
    }

    spin_lock_irqsave(&local->cmdlock, flags);

    /* wait until busy bit is clear */
    tries = HFA384X_CMD_BUSY_TIMEOUT;
    while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
        tries--;
        udelay(1);
    }
    if (tries == 0) {
        reg = HFA384X_INW(HFA384X_CMD_OFF);
        spin_unlock_irqrestore(&local->cmdlock, flags);
        printk("%s: prism2_enable_aux_port - timeout - reg=0x%04x\n",
               dev->name, reg);
        return -ETIMEDOUT;
    }

    val = HFA384X_INW(HFA384X_CONTROL_OFF);

    if (enable) {
        HFA384X_OUTW(HFA384X_AUX_MAGIC0, HFA384X_PARAM0_OFF);
        HFA384X_OUTW(HFA384X_AUX_MAGIC1, HFA384X_PARAM1_OFF);
        HFA384X_OUTW(HFA384X_AUX_MAGIC2, HFA384X_PARAM2_OFF);

        if ((val & HFA384X_AUX_PORT_MASK) != HFA384X_AUX_PORT_DISABLED)
            printk("prism2_enable_aux_port: was not disabled!?\n");
        val &= ~HFA384X_AUX_PORT_MASK;
        val |= HFA384X_AUX_PORT_ENABLE;
    } else {
        HFA384X_OUTW(0, HFA384X_PARAM0_OFF);
        HFA384X_OUTW(0, HFA384X_PARAM1_OFF);
        HFA384X_OUTW(0, HFA384X_PARAM2_OFF);

        if ((val & HFA384X_AUX_PORT_MASK) != HFA384X_AUX_PORT_ENABLED)
            printk("prism2_enable_aux_port: was not enabled!?\n");
        val &= ~HFA384X_AUX_PORT_MASK;
        val |= HFA384X_AUX_PORT_DISABLE;
    }
    HFA384X_OUTW(val, HFA384X_CONTROL_OFF);

    udelay(5);

    i = 10000;
    while (i > 0) {
        val = HFA384X_INW(HFA384X_CONTROL_OFF);
        val &= HFA384X_AUX_PORT_MASK;

        if ((enable && val == HFA384X_AUX_PORT_ENABLED) ||
            (!enable && val == HFA384X_AUX_PORT_DISABLED))
            break;

        udelay(10);
        i--;
    }

    spin_unlock_irqrestore(&local->cmdlock, flags);

    if (i == 0) {
        printk("prism2_enable_aux_port(%d) timed out\n",
               enable);
        return -ETIMEDOUT;
    }

    return 0;
}


static int hfa384x_from_aux(struct net_device *dev, unsigned int addr, int len,
                void *buf)
{
    u16 page, offset;
    if (addr & 1 || len & 1)
        return -1;

    page = addr >> 7;
    offset = addr & 0x7f;

    HFA384X_OUTW(page, HFA384X_AUXPAGE_OFF);
    HFA384X_OUTW(offset, HFA384X_AUXOFFSET_OFF);

    udelay(5);

#ifdef PRISM2_PCI
    {
        __le16 *pos = (__le16 *) buf;
        while (len > 0) {
            *pos++ = HFA384X_INW_DATA(HFA384X_AUXDATA_OFF);
            len -= 2;
        }
    }
#else /* PRISM2_PCI */
    HFA384X_INSW(HFA384X_AUXDATA_OFF, buf, len / 2);
#endif /* PRISM2_PCI */

    return 0;
}


static int hfa384x_to_aux(struct net_device *dev, unsigned int addr, int len,
              void *buf)
{
    u16 page, offset;
    if (addr & 1 || len & 1)
        return -1;

    page = addr >> 7;
    offset = addr & 0x7f;

    HFA384X_OUTW(page, HFA384X_AUXPAGE_OFF);
    HFA384X_OUTW(offset, HFA384X_AUXOFFSET_OFF);

    udelay(5);

#ifdef PRISM2_PCI
    {
        __le16 *pos = (__le16 *) buf;
        while (len > 0) {
            HFA384X_OUTW_DATA(*pos++, HFA384X_AUXDATA_OFF);
            len -= 2;
        }
    }
#else /* PRISM2_PCI */
    HFA384X_OUTSW(HFA384X_AUXDATA_OFF, buf, len / 2);
#endif /* PRISM2_PCI */

    return 0;
}


static int prism2_pda_ok(u8 *buf)
{
    __le16 *pda = (__le16 *) buf;
    int pos;
    u16 len, pdr;

    if (buf[0] == 0xff && buf[1] == 0x00 && buf[2] == 0xff &&
        buf[3] == 0x00)
        return 0;

    pos = 0;
    while (pos + 1 < PRISM2_PDA_SIZE / 2) {
        len = le16_to_cpu(pda[pos]);
        pdr = le16_to_cpu(pda[pos + 1]);
        if (len == 0 || pos + len > PRISM2_PDA_SIZE / 2)
            return 0;

        if (pdr == 0x0000 && len == 2) {
            /* PDA end found */
            return 1;
        }

        pos += len + 1;
    }

    return 0;
}


static int prism2_download_aux_dump(struct net_device *dev,
                     unsigned int addr, int len, u8 *buf)
{
    int res;

    prism2_enable_aux_port(dev, 1);
    res = hfa384x_from_aux(dev, addr, len, buf);
    prism2_enable_aux_port(dev, 0);
    if (res)
        return -1;

    return 0;
}


static u8 * prism2_read_pda(struct net_device *dev)
{
    u8 *buf;
    int res, i, found = 0;
#define NUM_PDA_ADDRS 4
    unsigned int pda_addr[NUM_PDA_ADDRS] = {
        0x7f0000 /* others than HFA3841 */,
        0x3f0000 /* HFA3841 */,
        0x390000 /* apparently used in older cards */,
        0x7f0002 /* Intel PRO/Wireless 2011B (PCI) */,
    };

    buf = kmalloc(PRISM2_PDA_SIZE, GFP_KERNEL);
    if (buf == NULL)
        return NULL;

    /* Note: wlan card should be in initial state (just after init cmd)
     * and no other operations should be performed concurrently. */

    prism2_enable_aux_port(dev, 1);

    for (i = 0; i < NUM_PDA_ADDRS; i++) {
        PDEBUG(DEBUG_EXTRA2, "%s: trying to read PDA from 0x%08x",
               dev->name, pda_addr[i]);
        res = hfa384x_from_aux(dev, pda_addr[i], PRISM2_PDA_SIZE, buf);
        if (res)
            continue;
        if (res == 0 && prism2_pda_ok(buf)) {
            PDEBUG2(DEBUG_EXTRA2, ": OK\n");
            found = 1;
            break;
        } else {
            PDEBUG2(DEBUG_EXTRA2, ": failed\n");
        }
    }

    prism2_enable_aux_port(dev, 0);

    if (!found) {
        printk(KERN_DEBUG "%s: valid PDA not found\n", dev->name);
        kfree(buf);
        buf = NULL;
    }

    return buf;
}


static int prism2_download_volatile(local_info_t *local,
                    struct prism2_download_data *param)
{
    struct net_device *dev = local->dev;
    int ret = 0, i;
    u16 param0, param1;

    if (local->hw_downloading) {
        printk(KERN_WARNING "%s: Already downloading - aborting new "
               "request\n", dev->name);
        return -1;
    }

    local->hw_downloading = 1;
    if (local->pri_only) {
        hfa384x_disable_interrupts(dev);
    } else {
        prism2_hw_shutdown(dev, 0);

        if (prism2_hw_init(dev, 0)) {
            printk(KERN_WARNING "%s: Could not initialize card for"
                   " download\n", dev->name);
            ret = -1;
            goto out;
        }
    }

    if (prism2_enable_aux_port(dev, 1)) {
        printk(KERN_WARNING "%s: Could not enable AUX port\n",
               dev->name);
        ret = -1;
        goto out;
    }

    param0 = param->start_addr & 0xffff;
    param1 = param->start_addr >> 16;

    HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
    HFA384X_OUTW(param1, HFA384X_PARAM1_OFF);
    if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
                 (HFA384X_PROGMODE_ENABLE_VOLATILE << 8),
                 param0)) {
        printk(KERN_WARNING "%s: Download command execution failed\n",
               dev->name);
        ret = -1;
        goto out;
    }

    for (i = 0; i < param->num_areas; i++) {
        PDEBUG(DEBUG_EXTRA2, "%s: Writing %d bytes at 0x%08x\n",
               dev->name, param->data[i].len, param->data[i].addr);
        if (hfa384x_to_aux(dev, param->data[i].addr,
                   param->data[i].len, param->data[i].data)) {
            printk(KERN_WARNING "%s: RAM download at 0x%08x "
                   "(len=%d) failed\n", dev->name,
                   param->data[i].addr, param->data[i].len);
            ret = -1;
            goto out;
        }
    }

    HFA384X_OUTW(param1, HFA384X_PARAM1_OFF);
    HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
    if (hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
                (HFA384X_PROGMODE_DISABLE << 8), param0)) {
        printk(KERN_WARNING "%s: Download command execution failed\n",
               dev->name);
        ret = -1;
        goto out;
    }
    /* ProgMode disable causes the hardware to restart itself from the
     * given starting address. Give hw some time and ACK command just in
     * case restart did not happen. */
    mdelay(5);
    HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);

    if (prism2_enable_aux_port(dev, 0)) {
        printk(KERN_DEBUG "%s: Disabling AUX port failed\n",
               dev->name);
        /* continue anyway.. restart should have taken care of this */
    }

    mdelay(5);
    local->hw_downloading = 0;
    if (prism2_hw_config(dev, 2)) {
        printk(KERN_WARNING "%s: Card configuration after RAM "
               "download failed\n", dev->name);
        ret = -1;
        goto out;
    }

 out:
    local->hw_downloading = 0;
    return ret;
}


static int prism2_enable_genesis(local_info_t *local, int hcr)
{
    struct net_device *dev = local->dev;
    u8 initseq[4] = { 0x00, 0xe1, 0xa1, 0xff };
    u8 readbuf[4];

    printk(KERN_DEBUG "%s: test Genesis mode with HCR 0x%02x\n",
           dev->name, hcr);
    local->func->cor_sreset(local);
    hfa384x_to_aux(dev, 0x7e0038, sizeof(initseq), initseq);
    local->func->genesis_reset(local, hcr);

    /* Readback test */
    hfa384x_from_aux(dev, 0x7e0038, sizeof(readbuf), readbuf);
    hfa384x_to_aux(dev, 0x7e0038, sizeof(initseq), initseq);
    hfa384x_from_aux(dev, 0x7e0038, sizeof(readbuf), readbuf);

    if (memcmp(initseq, readbuf, sizeof(initseq)) == 0) {
        printk(KERN_DEBUG "Readback test succeeded, HCR 0x%02x\n",
               hcr);
        return 0;
    } else {
        printk(KERN_DEBUG "Readback test failed, HCR 0x%02x "
               "write %02x %02x %02x %02x read %02x %02x %02x %02x\n",
               hcr, initseq[0], initseq[1], initseq[2], initseq[3],
               readbuf[0], readbuf[1], readbuf[2], readbuf[3]);
        return 1;
    }
}


static int prism2_get_ram_size(local_info_t *local)
{
    int ret;

    /* Try to enable genesis mode; 0x1F for x8 SRAM or 0x0F for x16 SRAM */
    if (prism2_enable_genesis(local, 0x1f) == 0)
        ret = 8;
    else if (prism2_enable_genesis(local, 0x0f) == 0)
        ret = 16;
    else
        ret = -1;

    /* Disable genesis mode */
    local->func->genesis_reset(local, ret == 16 ? 0x07 : 0x17);

    return ret;
}


static int prism2_download_genesis(local_info_t *local,
                   struct prism2_download_data *param)
{
    struct net_device *dev = local->dev;
    int ram16 = 0, i;
    int ret = 0;

    if (local->hw_downloading) {
        printk(KERN_WARNING "%s: Already downloading - aborting new "
               "request\n", dev->name);
        return -EBUSY;
    }

    if (!local->func->genesis_reset || !local->func->cor_sreset) {
        printk(KERN_INFO "%s: Genesis mode downloading not supported "
               "with this hwmodel\n", dev->name);
        return -EOPNOTSUPP;
    }

    local->hw_downloading = 1;

    if (prism2_enable_aux_port(dev, 1)) {
        printk(KERN_DEBUG "%s: failed to enable AUX port\n",
               dev->name);
        ret = -EIO;
        goto out;
    }

    if (local->sram_type == -1) {
        /* 0x1F for x8 SRAM or 0x0F for x16 SRAM */
        if (prism2_enable_genesis(local, 0x1f) == 0) {
            ram16 = 0;
            PDEBUG(DEBUG_EXTRA2, "%s: Genesis mode OK using x8 "
                   "SRAM\n", dev->name);
        } else if (prism2_enable_genesis(local, 0x0f) == 0) {
            ram16 = 1;
            PDEBUG(DEBUG_EXTRA2, "%s: Genesis mode OK using x16 "
                   "SRAM\n", dev->name);
        } else {
            printk(KERN_DEBUG "%s: Could not initiate genesis "
                   "mode\n", dev->name);
            ret = -EIO;
            goto out;
        }
    } else {
        if (prism2_enable_genesis(local, local->sram_type == 8 ?
                      0x1f : 0x0f)) {
            printk(KERN_DEBUG "%s: Failed to set Genesis "
                   "mode (sram_type=%d)\n", dev->name,
                   local->sram_type);
            ret = -EIO;
            goto out;
        }
        ram16 = local->sram_type != 8;
    }

    for (i = 0; i < param->num_areas; i++) {
        PDEBUG(DEBUG_EXTRA2, "%s: Writing %d bytes at 0x%08x\n",
               dev->name, param->data[i].len, param->data[i].addr);
        if (hfa384x_to_aux(dev, param->data[i].addr,
                   param->data[i].len, param->data[i].data)) {
            printk(KERN_WARNING "%s: RAM download at 0x%08x "
                   "(len=%d) failed\n", dev->name,
                   param->data[i].addr, param->data[i].len);
            ret = -EIO;
            goto out;
        }
    }

    PDEBUG(DEBUG_EXTRA2, "Disable genesis mode\n");
    local->func->genesis_reset(local, ram16 ? 0x07 : 0x17);
    if (prism2_enable_aux_port(dev, 0)) {
        printk(KERN_DEBUG "%s: Failed to disable AUX port\n",
               dev->name);
    }

    mdelay(5);
    local->hw_downloading = 0;

    PDEBUG(DEBUG_EXTRA2, "Trying to initialize card\n");
    /*
     * Make sure the INIT command does not generate a command completion
     * event by disabling interrupts.
     */
    hfa384x_disable_interrupts(dev);
    if (prism2_hw_init(dev, 1)) {
        printk(KERN_DEBUG "%s: Initialization after genesis mode "
               "download failed\n", dev->name);
        ret = -EIO;
        goto out;
    }

    PDEBUG(DEBUG_EXTRA2, "Card initialized - running PRI only\n");
    if (prism2_hw_init2(dev, 1)) {
        printk(KERN_DEBUG "%s: Initialization(2) after genesis mode "
               "download failed\n", dev->name);
        ret = -EIO;
        goto out;
    }

 out:
    local->hw_downloading = 0;
    return ret;
}


#ifdef PRISM2_NON_VOLATILE_DOWNLOAD
/* Note! Non-volatile downloading functionality has not yet been tested
 * thoroughly and it may corrupt flash image and effectively kill the card that
 * is being updated. You have been warned. */

static inline int prism2_download_block(struct net_device *dev,
                    u32 addr, u8 *data,
                    u32 bufaddr, int rest_len)
{
    u16 param0, param1;
    int block_len;

    block_len = rest_len < 4096 ? rest_len : 4096;

    param0 = addr & 0xffff;
    param1 = addr >> 16;

    HFA384X_OUTW(block_len, HFA384X_PARAM2_OFF);
    HFA384X_OUTW(param1, HFA384X_PARAM1_OFF);

    if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
                 (HFA384X_PROGMODE_ENABLE_NON_VOLATILE << 8),
                 param0)) {
        printk(KERN_WARNING "%s: Flash download command execution "
               "failed\n", dev->name);
        return -1;
    }

    if (hfa384x_to_aux(dev, bufaddr, block_len, data)) {
        printk(KERN_WARNING "%s: flash download at 0x%08x "
               "(len=%d) failed\n", dev->name, addr, block_len);
        return -1;
    }

    HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
    HFA384X_OUTW(0, HFA384X_PARAM1_OFF);
    if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
                 (HFA384X_PROGMODE_PROGRAM_NON_VOLATILE << 8),
                 0)) {
        printk(KERN_WARNING "%s: Flash write command execution "
               "failed\n", dev->name);
        return -1;
    }

    return block_len;
}


static int prism2_download_nonvolatile(local_info_t *local,
                       struct prism2_download_data *dl)
{
    struct net_device *dev = local->dev;
    int ret = 0, i;
    struct {
        __le16 page;
        __le16 offset;
        __le16 len;
    } dlbuffer;
    u32 bufaddr;

    if (local->hw_downloading) {
        printk(KERN_WARNING "%s: Already downloading - aborting new "
               "request\n", dev->name);
        return -1;
    }

    ret = local->func->get_rid(dev, HFA384X_RID_DOWNLOADBUFFER,
                   &dlbuffer, 6, 0);

    if (ret < 0) {
        printk(KERN_WARNING "%s: Could not read download buffer "
               "parameters\n", dev->name);
        goto out;
    }

    printk(KERN_DEBUG "Download buffer: %d bytes at 0x%04x:0x%04x\n",
           le16_to_cpu(dlbuffer.len),
           le16_to_cpu(dlbuffer.page),
           le16_to_cpu(dlbuffer.offset));

    bufaddr = (le16_to_cpu(dlbuffer.page) << 7) + le16_to_cpu(dlbuffer.offset);

    local->hw_downloading = 1;

    if (!local->pri_only) {
        prism2_hw_shutdown(dev, 0);

        if (prism2_hw_init(dev, 0)) {
            printk(KERN_WARNING "%s: Could not initialize card for"
                   " download\n", dev->name);
            ret = -1;
            goto out;
        }
    }

    hfa384x_disable_interrupts(dev);

    if (prism2_enable_aux_port(dev, 1)) {
        printk(KERN_WARNING "%s: Could not enable AUX port\n",
               dev->name);
        ret = -1;
        goto out;
    }

    printk(KERN_DEBUG "%s: starting flash download\n", dev->name);
    for (i = 0; i < dl->num_areas; i++) {
        int rest_len = dl->data[i].len;
        int data_off = 0;

        while (rest_len > 0) {
            int block_len;

            block_len = prism2_download_block(
                dev, dl->data[i].addr + data_off,
                dl->data[i].data + data_off, bufaddr,
                rest_len);

            if (block_len < 0) {
                ret = -1;
                goto out;
            }

            rest_len -= block_len;
            data_off += block_len;
        }
    }

    HFA384X_OUTW(0, HFA384X_PARAM1_OFF);
    HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
    if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
                (HFA384X_PROGMODE_DISABLE << 8), 0)) {
        printk(KERN_WARNING "%s: Download command execution failed\n",
               dev->name);
        ret = -1;
        goto out;
    }

    if (prism2_enable_aux_port(dev, 0)) {
        printk(KERN_DEBUG "%s: Disabling AUX port failed\n",
               dev->name);
        /* continue anyway.. restart should have taken care of this */
    }

    mdelay(5);

    local->func->hw_reset(dev);
    local->hw_downloading = 0;
    if (prism2_hw_config(dev, 2)) {
        printk(KERN_WARNING "%s: Card configuration after flash "
               "download failed\n", dev->name);
        ret = -1;
    } else {
        printk(KERN_INFO "%s: Card initialized successfully after "
               "flash download\n", dev->name);
    }

 out:
    local->hw_downloading = 0;
    return ret;
}
#endif /* PRISM2_NON_VOLATILE_DOWNLOAD */


static void prism2_download_free_data(struct prism2_download_data *dl)
{
    int i;

    if (dl == NULL)
        return;

    for (i = 0; i < dl->num_areas; i++)
        kfree(dl->data[i].data);
    kfree(dl);
}


static int prism2_download(local_info_t *local,
               struct prism2_download_param *param)
{
    int ret = 0;
    int i;
    u32 total_len = 0;
    struct prism2_download_data *dl = NULL;

    printk(KERN_DEBUG "prism2_download: dl_cmd=%d start_addr=0x%08x "
           "num_areas=%d\n",
           param->dl_cmd, param->start_addr, param->num_areas);

    if (param->num_areas > 100) {
        ret = -EINVAL;
        goto out;
    }

    dl = kzalloc(sizeof(*dl) + param->num_areas *
             sizeof(struct prism2_download_data_area), GFP_KERNEL);
    if (dl == NULL) {
        ret = -ENOMEM;
        goto out;
    }
    dl->dl_cmd = param->dl_cmd;
    dl->start_addr = param->start_addr;
    dl->num_areas = param->num_areas;
    for (i = 0; i < param->num_areas; i++) {
        PDEBUG(DEBUG_EXTRA2,
               "  area %d: addr=0x%08x len=%d ptr=0x%p\n",
               i, param->data[i].addr, param->data[i].len,
               param->data[i].ptr);

        dl->data[i].addr = param->data[i].addr;
        dl->data[i].len = param->data[i].len;

        total_len += param->data[i].len;
        if (param->data[i].len > PRISM2_MAX_DOWNLOAD_AREA_LEN ||
            total_len > PRISM2_MAX_DOWNLOAD_LEN) {
            ret = -E2BIG;
            goto out;
        }

        dl->data[i].data = kmalloc(dl->data[i].len, GFP_KERNEL);
        if (dl->data[i].data == NULL) {
            ret = -ENOMEM;
            goto out;
        }

        if (copy_from_user(dl->data[i].data, param->data[i].ptr,
                   param->data[i].len)) {
            ret = -EFAULT;
            goto out;
        }
    }

    switch (param->dl_cmd) {
    case PRISM2_DOWNLOAD_VOLATILE:
    case PRISM2_DOWNLOAD_VOLATILE_PERSISTENT:
        ret = prism2_download_volatile(local, dl);
        break;
    case PRISM2_DOWNLOAD_VOLATILE_GENESIS:
    case PRISM2_DOWNLOAD_VOLATILE_GENESIS_PERSISTENT:
        ret = prism2_download_genesis(local, dl);
        break;
    case PRISM2_DOWNLOAD_NON_VOLATILE:
#ifdef PRISM2_NON_VOLATILE_DOWNLOAD
        ret = prism2_download_nonvolatile(local, dl);
#else /* PRISM2_NON_VOLATILE_DOWNLOAD */
        printk(KERN_INFO "%s: non-volatile downloading not enabled\n",
               local->dev->name);
        ret = -EOPNOTSUPP;
#endif /* PRISM2_NON_VOLATILE_DOWNLOAD */
        break;
    default:
        printk(KERN_DEBUG "%s: unsupported download command %d\n",
               local->dev->name, param->dl_cmd);
        ret = -EINVAL;
        break;
    }

 out:
    if (ret == 0 && dl &&
        param->dl_cmd == PRISM2_DOWNLOAD_VOLATILE_GENESIS_PERSISTENT) {
        prism2_download_free_data(local->dl_pri);
        local->dl_pri = dl;
    } else if (ret == 0 && dl &&
           param->dl_cmd == PRISM2_DOWNLOAD_VOLATILE_PERSISTENT) {
        prism2_download_free_data(local->dl_sec);
        local->dl_sec = dl;
    } else
        prism2_download_free_data(dl);

    return ret;
}