From 2b80848e3818fb1c8ccddc105b065a86c68afa9d Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Thu, 4 Sep 2008 12:29:38 +0200 Subject: p54usb: support LM87 firmwares This patch adds the necessary changes to support LM87 firmwares. Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville --- drivers/net/wireless/p54/p54usb.c | 72 ++++++++++++++++++++++++++++++++------- 1 file changed, 59 insertions(+), 13 deletions(-) (limited to 'drivers/net/wireless/p54/p54usb.c') diff --git a/drivers/net/wireless/p54/p54usb.c b/drivers/net/wireless/p54/p54usb.c index eca858c40b1f..7444f3729779 100644 --- a/drivers/net/wireless/p54/p54usb.c +++ b/drivers/net/wireless/p54/p54usb.c @@ -91,8 +91,13 @@ static void p54u_rx_cb(struct urb *urb) skb_unlink(skb, &priv->rx_queue); skb_put(skb, urb->actual_length); - if (!priv->hw_type) - skb_pull(skb, sizeof(struct net2280_tx_hdr)); + + if (priv->hw_type == P54U_NET2280) + skb_pull(skb, priv->common.tx_hdr_len); + if (priv->common.fw_interface == FW_LM87) { + skb_pull(skb, 4); + skb_put(skb, 4); + } if (p54_rx(dev, skb)) { skb = dev_alloc_skb(priv->common.rx_mtu + 32); @@ -109,9 +114,12 @@ static void p54u_rx_cb(struct urb *urb) urb->context = skb; skb_queue_tail(&priv->rx_queue, skb); } else { - if (!priv->hw_type) - skb_push(skb, sizeof(struct net2280_tx_hdr)); - + if (priv->hw_type == P54U_NET2280) + skb_push(skb, priv->common.tx_hdr_len); + if (priv->common.fw_interface == FW_LM87) { + skb_push(skb, 4); + skb_put(skb, 4); + } skb_reset_tail_pointer(skb); skb_trim(skb, 0); if (urb->transfer_buffer != skb_tail_pointer(skb)) { @@ -210,6 +218,42 @@ static void p54u_tx_3887(struct ieee80211_hw *dev, struct p54_control_hdr *data, usb_submit_urb(data_urb, GFP_ATOMIC); } +__le32 p54u_lm87_chksum(const u32 *data, size_t length) +{ + __le32 chk = 0; + + length >>= 2; + while (length--) { + chk ^= cpu_to_le32(*data++); + chk = (chk >> 5) ^ (chk << 3); + } + + return chk; +} + +static void p54u_tx_lm87(struct ieee80211_hw *dev, + struct p54_control_hdr *data, + size_t len, int free_on_tx) +{ + struct p54u_priv *priv = dev->priv; + struct urb *data_urb; + struct lm87_tx_hdr *hdr = (void *)data - sizeof(*hdr); + + data_urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!data_urb) + return; + + hdr->chksum = p54u_lm87_chksum((u32 *)data, len); + hdr->device_addr = data->req_id; + + usb_fill_bulk_urb(data_urb, priv->udev, + usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA), hdr, + len + sizeof(*hdr), free_on_tx ? p54u_tx_free_cb : p54u_tx_cb, + dev); + + usb_submit_urb(data_urb, GFP_ATOMIC); +} + static void p54u_tx_net2280(struct ieee80211_hw *dev, struct p54_control_hdr *data, size_t len, int free_on_tx) { @@ -776,21 +820,23 @@ static int __devinit p54u_probe(struct usb_interface *intf, } } priv->common.open = p54u_open; - + priv->common.stop = p54u_stop; if (recognized_pipes < P54U_PIPE_NUMBER) { priv->hw_type = P54U_3887; - priv->common.tx = p54u_tx_3887; + err = p54u_upload_firmware_3887(dev); + if (priv->common.fw_interface == FW_LM87) { + dev->extra_tx_headroom += sizeof(struct lm87_tx_hdr); + priv->common.tx_hdr_len = sizeof(struct lm87_tx_hdr); + priv->common.tx = p54u_tx_lm87; + } else + priv->common.tx = p54u_tx_3887; } else { + priv->hw_type = P54U_NET2280; dev->extra_tx_headroom += sizeof(struct net2280_tx_hdr); priv->common.tx_hdr_len = sizeof(struct net2280_tx_hdr); priv->common.tx = p54u_tx_net2280; - } - priv->common.stop = p54u_stop; - - if (priv->hw_type) - err = p54u_upload_firmware_3887(dev); - else err = p54u_upload_firmware_net2280(dev); + } if (err) goto err_free_dev; -- cgit v1.2.2