| /* |
| * Copyright (c) 2006 Damien Bergamini <damien.bergamini@free.fr> |
| * Copyright (c) 2006 Sam Leffler, Errno Consulting |
| * Copyright (c) 2007 Christoph Hellwig <hch@lst.de> |
| * Copyright (c) 2008-2009 Weongyo Jeong <weongyo@freebsd.org> |
| * Copyright (c) 2012 Pontus Fuchs <pontus.fuchs@gmail.com> |
| * |
| * Permission to use, copy, modify, and/or distribute this software for any |
| * purpose with or without fee is hereby granted, provided that the above |
| * copyright notice and this permission notice appear in all copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| /* |
| * This driver is based on the uath driver written by Damien Bergamini for |
| * OpenBSD, who did black-box analysis of the Windows binary driver to find |
| * out how the hardware works. It contains a lot magic numbers because of |
| * that and only has minimal functionality. |
| */ |
| #include <linux/compiler.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/list.h> |
| #include <linux/completion.h> |
| #include <linux/firmware.h> |
| #include <linux/skbuff.h> |
| #include <linux/usb.h> |
| #include <net/mac80211.h> |
| |
| #include "ar5523.h" |
| #include "ar5523_hw.h" |
| |
| /* |
| * Various supported device vendors/products. |
| * UB51: AR5005UG 802.11b/g, UB52: AR5005UX 802.11a/b/g |
| */ |
| |
| static int ar5523_submit_rx_cmd(struct ar5523 *ar); |
| static void ar5523_data_tx_pkt_put(struct ar5523 *ar); |
| |
| static void ar5523_read_reply(struct ar5523 *ar, struct ar5523_cmd_hdr *hdr, |
| struct ar5523_tx_cmd *cmd) |
| { |
| int dlen, olen; |
| __be32 *rp; |
| |
| dlen = be32_to_cpu(hdr->len) - sizeof(*hdr); |
| |
| if (dlen < 0) { |
| WARN_ON(1); |
| goto out; |
| } |
| |
| ar5523_dbg(ar, "Code = %d len = %d\n", be32_to_cpu(hdr->code) & 0xff, |
| dlen); |
| |
| rp = (__be32 *)(hdr + 1); |
| if (dlen >= sizeof(u32)) { |
| olen = be32_to_cpu(rp[0]); |
| dlen -= sizeof(u32); |
| if (olen == 0) { |
| /* convention is 0 =>'s one word */ |
| olen = sizeof(u32); |
| } |
| } else |
| olen = 0; |
| |
| if (cmd->odata) { |
| if (cmd->olen < olen) { |
| ar5523_err(ar, "olen to small %d < %d\n", |
| cmd->olen, olen); |
| cmd->olen = 0; |
| cmd->res = -EOVERFLOW; |
| } else { |
| cmd->olen = olen; |
| memcpy(cmd->odata, &rp[1], olen); |
| cmd->res = 0; |
| } |
| } |
| |
| out: |
| complete(&cmd->done); |
| } |
| |
| static void ar5523_cmd_rx_cb(struct urb *urb) |
| { |
| struct ar5523 *ar = urb->context; |
| struct ar5523_tx_cmd *cmd = &ar->tx_cmd; |
| struct ar5523_cmd_hdr *hdr = ar->rx_cmd_buf; |
| int dlen; |
| u32 code, hdrlen; |
| |
| if (urb->status) { |
| if (urb->status != -ESHUTDOWN) |
| ar5523_err(ar, "RX USB error %d.\n", urb->status); |
| goto skip; |
| } |
| |
| if (urb->actual_length < sizeof(struct ar5523_cmd_hdr)) { |
| ar5523_err(ar, "RX USB to short.\n"); |
| goto skip; |
| } |
| |
| ar5523_dbg(ar, "%s code %02x priv %d\n", __func__, |
| be32_to_cpu(hdr->code) & 0xff, hdr->priv); |
| |
| code = be32_to_cpu(hdr->code); |
| hdrlen = be32_to_cpu(hdr->len); |
| |
| switch (code & 0xff) { |
| default: |
| /* reply to a read command */ |
| if (hdr->priv != AR5523_CMD_ID) { |
| ar5523_err(ar, "Unexpected command id: %02x\n", |
| code & 0xff); |
| goto skip; |
| } |
| ar5523_read_reply(ar, hdr, cmd); |
| break; |
| |
| case WDCMSG_DEVICE_AVAIL: |
| ar5523_dbg(ar, "WDCMSG_DEVICE_AVAIL\n"); |
| cmd->res = 0; |
| cmd->olen = 0; |
| complete(&cmd->done); |
| break; |
| |
| case WDCMSG_SEND_COMPLETE: |
| ar5523_dbg(ar, "WDCMSG_SEND_COMPLETE: %d pending\n", |
| atomic_read(&ar->tx_nr_pending)); |
| if (!test_bit(AR5523_HW_UP, &ar->flags)) |
| ar5523_dbg(ar, "Unexpected WDCMSG_SEND_COMPLETE\n"); |
| else { |
| mod_timer(&ar->tx_wd_timer, |
| jiffies + AR5523_TX_WD_TIMEOUT); |
| ar5523_data_tx_pkt_put(ar); |
| |
| } |
| break; |
| |
| case WDCMSG_TARGET_START: |
| /* This command returns a bogus id so it needs special |
| handling */ |
| dlen = hdrlen - sizeof(*hdr); |
| if (dlen != (int)sizeof(u32)) { |
| ar5523_err(ar, "Invalid reply to WDCMSG_TARGET_START"); |
| return; |
| } |
| memcpy(cmd->odata, hdr + 1, sizeof(u32)); |
| cmd->olen = sizeof(u32); |
| cmd->res = 0; |
| complete(&cmd->done); |
| break; |
| |
| case WDCMSG_STATS_UPDATE: |
| ar5523_dbg(ar, "WDCMSG_STATS_UPDATE\n"); |
| break; |
| } |
| |
| skip: |
| ar5523_submit_rx_cmd(ar); |
| } |
| |
| static int ar5523_alloc_rx_cmd(struct ar5523 *ar) |
| { |
| ar->rx_cmd_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!ar->rx_cmd_urb) |
| return -ENOMEM; |
| |
| ar->rx_cmd_buf = usb_alloc_coherent(ar->dev, AR5523_MAX_RXCMDSZ, |
| GFP_KERNEL, |
| &ar->rx_cmd_urb->transfer_dma); |
| if (!ar->rx_cmd_buf) { |
| usb_free_urb(ar->rx_cmd_urb); |
| return -ENOMEM; |
| } |
| return 0; |
| } |
| |
| static void ar5523_cancel_rx_cmd(struct ar5523 *ar) |
| { |
| usb_kill_urb(ar->rx_cmd_urb); |
| } |
| |
| static void ar5523_free_rx_cmd(struct ar5523 *ar) |
| { |
| usb_free_coherent(ar->dev, AR5523_MAX_RXCMDSZ, |
| ar->rx_cmd_buf, ar->rx_cmd_urb->transfer_dma); |
| usb_free_urb(ar->rx_cmd_urb); |
| } |
| |
| static int ar5523_submit_rx_cmd(struct ar5523 *ar) |
| { |
| int error; |
| |
| usb_fill_bulk_urb(ar->rx_cmd_urb, ar->dev, |
| ar5523_cmd_rx_pipe(ar->dev), ar->rx_cmd_buf, |
| AR5523_MAX_RXCMDSZ, ar5523_cmd_rx_cb, ar); |
| ar->rx_cmd_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
| |
| error = usb_submit_urb(ar->rx_cmd_urb, GFP_ATOMIC); |
| if (error) { |
| if (error != -ENODEV) |
| ar5523_err(ar, "error %d when submitting rx urb\n", |
| error); |
| return error; |
| } |
| return 0; |
| } |
| |
| /* |
| * Command submitted cb |
| */ |
| static void ar5523_cmd_tx_cb(struct urb *urb) |
| { |
| struct ar5523_tx_cmd *cmd = urb->context; |
| struct ar5523 *ar = cmd->ar; |
| |
| if (urb->status) { |
| ar5523_err(ar, "Failed to TX command. Status = %d\n", |
| urb->status); |
| cmd->res = urb->status; |
| complete(&cmd->done); |
| return; |
| } |
| |
| if (!(cmd->flags & AR5523_CMD_FLAG_READ)) { |
| cmd->res = 0; |
| complete(&cmd->done); |
| } |
| } |
| |
| static int ar5523_cmd(struct ar5523 *ar, u32 code, const void *idata, |
| int ilen, void *odata, int olen, int flags) |
| { |
| struct ar5523_cmd_hdr *hdr; |
| struct ar5523_tx_cmd *cmd = &ar->tx_cmd; |
| int xferlen, error; |
| |
| /* always bulk-out a multiple of 4 bytes */ |
| xferlen = (sizeof(struct ar5523_cmd_hdr) + ilen + 3) & ~3; |
| |
| hdr = (struct ar5523_cmd_hdr *)cmd->buf_tx; |
| memset(hdr, 0, sizeof(struct ar5523_cmd_hdr)); |
| hdr->len = cpu_to_be32(xferlen); |
| hdr->code = cpu_to_be32(code); |
| hdr->priv = AR5523_CMD_ID; |
| |
| if (flags & AR5523_CMD_FLAG_MAGIC) |
| hdr->magic = cpu_to_be32(1 << 24); |
| memcpy(hdr + 1, idata, ilen); |
| |
| cmd->odata = odata; |
| cmd->olen = olen; |
| cmd->flags = flags; |
| |
| ar5523_dbg(ar, "do cmd %02x\n", code); |
| |
| usb_fill_bulk_urb(cmd->urb_tx, ar->dev, ar5523_cmd_tx_pipe(ar->dev), |
| cmd->buf_tx, xferlen, ar5523_cmd_tx_cb, cmd); |
| cmd->urb_tx->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
| |
| error = usb_submit_urb(cmd->urb_tx, GFP_KERNEL); |
| if (error) { |
| ar5523_err(ar, "could not send command 0x%x, error=%d\n", |
| code, error); |
| return error; |
| } |
| |
| if (!wait_for_completion_timeout(&cmd->done, 2 * HZ)) { |
| cmd->odata = NULL; |
| ar5523_err(ar, "timeout waiting for command %02x reply\n", |
| code); |
| cmd->res = -ETIMEDOUT; |
| } |
| return cmd->res; |
| } |
| |
| static int ar5523_cmd_write(struct ar5523 *ar, u32 code, const void *data, |
| int len, int flags) |
| { |
| flags &= ~AR5523_CMD_FLAG_READ; |
| return ar5523_cmd(ar, code, data, len, NULL, 0, flags); |
| } |
| |
| static int ar5523_cmd_read(struct ar5523 *ar, u32 code, const void *idata, |
| int ilen, void *odata, int olen, int flags) |
| { |
| flags |= AR5523_CMD_FLAG_READ; |
| return ar5523_cmd(ar, code, idata, ilen, odata, olen, flags); |
| } |
| |
| static int ar5523_config(struct ar5523 *ar, u32 reg, u32 val) |
| { |
| struct ar5523_write_mac write; |
| int error; |
| |
| write.reg = cpu_to_be32(reg); |
| write.len = cpu_to_be32(0); /* 0 = single write */ |
| *(__be32 *)write.data = cpu_to_be32(val); |
| |
| error = ar5523_cmd_write(ar, WDCMSG_TARGET_SET_CONFIG, &write, |
| 3 * sizeof(u32), 0); |
| if (error != 0) |
| ar5523_err(ar, "could not write register 0x%02x\n", reg); |
| return error; |
| } |
| |
| static int ar5523_config_multi(struct ar5523 *ar, u32 reg, const void *data, |
| int len) |
| { |
| struct ar5523_write_mac write; |
| int error; |
| |
| write.reg = cpu_to_be32(reg); |
| write.len = cpu_to_be32(len); |
| memcpy(write.data, data, len); |
| |
| /* properly handle the case where len is zero (reset) */ |
| error = ar5523_cmd_write(ar, WDCMSG_TARGET_SET_CONFIG, &write, |
| (len == 0) ? sizeof(u32) : 2 * sizeof(u32) + len, 0); |
| if (error != 0) |
| ar5523_err(ar, "could not write %d bytes to register 0x%02x\n", |
| len, reg); |
| return error; |
| } |
| |
| static int ar5523_get_status(struct ar5523 *ar, u32 which, void *odata, |
| int olen) |
| { |
| int error; |
| __be32 which_be; |
| |
| which_be = cpu_to_be32(which); |
| error = ar5523_cmd_read(ar, WDCMSG_TARGET_GET_STATUS, |
| &which_be, sizeof(which_be), odata, olen, AR5523_CMD_FLAG_MAGIC); |
| if (error != 0) |
| ar5523_err(ar, "could not read EEPROM offset 0x%02x\n", which); |
| return error; |
| } |
| |
| static int ar5523_get_capability(struct ar5523 *ar, u32 cap, u32 *val) |
| { |
| int error; |
| __be32 cap_be, val_be; |
| |
| cap_be = cpu_to_be32(cap); |
| error = ar5523_cmd_read(ar, WDCMSG_TARGET_GET_CAPABILITY, &cap_be, |
| sizeof(cap_be), &val_be, sizeof(__be32), |
| AR5523_CMD_FLAG_MAGIC); |
| if (error != 0) { |
| ar5523_err(ar, "could not read capability %u\n", cap); |
| return error; |
| } |
| *val = be32_to_cpu(val_be); |
| return error; |
| } |
| |
| static int ar5523_get_devcap(struct ar5523 *ar) |
| { |
| #define GETCAP(x) do { \ |
| error = ar5523_get_capability(ar, x, &cap); \ |
| if (error != 0) \ |
| return error; \ |
| ar5523_info(ar, "Cap: " \ |
| "%s=0x%08x\n", #x, cap); \ |
| } while (0) |
| int error; |
| u32 cap; |
| |
| /* collect device capabilities */ |
| GETCAP(CAP_TARGET_VERSION); |
| GETCAP(CAP_TARGET_REVISION); |
| GETCAP(CAP_MAC_VERSION); |
| GETCAP(CAP_MAC_REVISION); |
| GETCAP(CAP_PHY_REVISION); |
| GETCAP(CAP_ANALOG_5GHz_REVISION); |
| GETCAP(CAP_ANALOG_2GHz_REVISION); |
| |
| GETCAP(CAP_REG_DOMAIN); |
| GETCAP(CAP_REG_CAP_BITS); |
| GETCAP(CAP_WIRELESS_MODES); |
| GETCAP(CAP_CHAN_SPREAD_SUPPORT); |
| GETCAP(CAP_COMPRESS_SUPPORT); |
| GETCAP(CAP_BURST_SUPPORT); |
| GETCAP(CAP_FAST_FRAMES_SUPPORT); |
| GETCAP(CAP_CHAP_TUNING_SUPPORT); |
| GETCAP(CAP_TURBOG_SUPPORT); |
| GETCAP(CAP_TURBO_PRIME_SUPPORT); |
| GETCAP(CAP_DEVICE_TYPE); |
| GETCAP(CAP_WME_SUPPORT); |
| GETCAP(CAP_TOTAL_QUEUES); |
| GETCAP(CAP_CONNECTION_ID_MAX); |
| |
| GETCAP(CAP_LOW_5GHZ_CHAN); |
| GETCAP(CAP_HIGH_5GHZ_CHAN); |
| GETCAP(CAP_LOW_2GHZ_CHAN); |
| GETCAP(CAP_HIGH_2GHZ_CHAN); |
| GETCAP(CAP_TWICE_ANTENNAGAIN_5G); |
| GETCAP(CAP_TWICE_ANTENNAGAIN_2G); |
| |
| GETCAP(CAP_CIPHER_AES_CCM); |
| GETCAP(CAP_CIPHER_TKIP); |
| GETCAP(CAP_MIC_TKIP); |
| return 0; |
| } |
| |
| static int ar5523_set_ledsteady(struct ar5523 *ar, int lednum, int ledmode) |
| { |
| struct ar5523_cmd_ledsteady led; |
| |
| led.lednum = cpu_to_be32(lednum); |
| led.ledmode = cpu_to_be32(ledmode); |
| |
| ar5523_dbg(ar, "set %s led %s (steady)\n", |
| (lednum == UATH_LED_LINK) ? "link" : "activity", |
| ledmode ? "on" : "off"); |
| return ar5523_cmd_write(ar, WDCMSG_SET_LED_STEADY, &led, sizeof(led), |
| 0); |
| } |
| |
| static int ar5523_set_rxfilter(struct ar5523 *ar, u32 bits, u32 op) |
| { |
| struct ar5523_cmd_rx_filter rxfilter; |
| |
| rxfilter.bits = cpu_to_be32(bits); |
| rxfilter.op = cpu_to_be32(op); |
| |
| ar5523_dbg(ar, "setting Rx filter=0x%x flags=0x%x\n", bits, op); |
| return ar5523_cmd_write(ar, WDCMSG_RX_FILTER, &rxfilter, |
| sizeof(rxfilter), 0); |
| } |
| |
| static int ar5523_reset_tx_queues(struct ar5523 *ar) |
| { |
| __be32 qid = cpu_to_be32(0); |
| |
| ar5523_dbg(ar, "resetting Tx queue\n"); |
| return ar5523_cmd_write(ar, WDCMSG_RELEASE_TX_QUEUE, |
| &qid, sizeof(qid), 0); |
| } |
| |
| static int ar5523_set_chan(struct ar5523 *ar) |
| { |
| struct ieee80211_conf *conf = &ar->hw->conf; |
| |
| struct ar5523_cmd_reset reset; |
| |
| memset(&reset, 0, sizeof(reset)); |
| reset.flags |= cpu_to_be32(UATH_CHAN_2GHZ); |
| reset.flags |= cpu_to_be32(UATH_CHAN_OFDM); |
| reset.freq = cpu_to_be32(conf->chandef.chan->center_freq); |
| reset.maxrdpower = cpu_to_be32(50); /* XXX */ |
| reset.channelchange = cpu_to_be32(1); |
| reset.keeprccontent = cpu_to_be32(0); |
| |
| ar5523_dbg(ar, "set chan flags 0x%x freq %d\n", |
| be32_to_cpu(reset.flags), |
| conf->chandef.chan->center_freq); |
| return ar5523_cmd_write(ar, WDCMSG_RESET, &reset, sizeof(reset), 0); |
| } |
| |
| static int ar5523_queue_init(struct ar5523 *ar) |
| { |
| struct ar5523_cmd_txq_setup qinfo; |
| |
| ar5523_dbg(ar, "setting up Tx queue\n"); |
| qinfo.qid = cpu_to_be32(0); |
| qinfo.len = cpu_to_be32(sizeof(qinfo.attr)); |
| qinfo.attr.priority = cpu_to_be32(0); /* XXX */ |
| qinfo.attr.aifs = cpu_to_be32(3); |
| qinfo.attr.logcwmin = cpu_to_be32(4); |
| qinfo.attr.logcwmax = cpu_to_be32(10); |
| qinfo.attr.bursttime = cpu_to_be32(0); |
| qinfo.attr.mode = cpu_to_be32(0); |
| qinfo.attr.qflags = cpu_to_be32(1); /* XXX? */ |
| return ar5523_cmd_write(ar, WDCMSG_SETUP_TX_QUEUE, &qinfo, |
| sizeof(qinfo), 0); |
| } |
| |
| static int ar5523_switch_chan(struct ar5523 *ar) |
| { |
| int error; |
| |
| error = ar5523_set_chan(ar); |
| if (error) { |
| ar5523_err(ar, "could not set chan, error %d\n", error); |
| goto out_err; |
| } |
| |
| /* reset Tx rings */ |
| error = ar5523_reset_tx_queues(ar); |
| if (error) { |
| ar5523_err(ar, "could not reset Tx queues, error %d\n", |
| error); |
| goto out_err; |
| } |
| /* set Tx rings WME properties */ |
| error = ar5523_queue_init(ar); |
| if (error) |
| ar5523_err(ar, "could not init wme, error %d\n", error); |
| |
| out_err: |
| return error; |
| } |
| |
| static void ar5523_rx_data_put(struct ar5523 *ar, |
| struct ar5523_rx_data *data) |
| { |
| unsigned long flags; |
| spin_lock_irqsave(&ar->rx_data_list_lock, flags); |
| list_move(&data->list, &ar->rx_data_free); |
| spin_unlock_irqrestore(&ar->rx_data_list_lock, flags); |
| } |
| |
| static void ar5523_data_rx_cb(struct urb *urb) |
| { |
| struct ar5523_rx_data *data = urb->context; |
| struct ar5523 *ar = data->ar; |
| struct ar5523_rx_desc *desc; |
| struct ar5523_chunk *chunk; |
| struct ieee80211_hw *hw = ar->hw; |
| struct ieee80211_rx_status *rx_status; |
| u32 rxlen; |
| int usblen = urb->actual_length; |
| int hdrlen, pad; |
| |
| ar5523_dbg(ar, "%s\n", __func__); |
| /* sync/async unlink faults aren't errors */ |
| if (urb->status) { |
| if (urb->status != -ESHUTDOWN) |
| ar5523_err(ar, "%s: USB err: %d\n", __func__, |
| urb->status); |
| goto skip; |
| } |
| |
| if (usblen < AR5523_MIN_RXBUFSZ) { |
| ar5523_err(ar, "RX: wrong xfer size (usblen=%d)\n", usblen); |
| goto skip; |
| } |
| |
| chunk = (struct ar5523_chunk *) data->skb->data; |
| |
| if (((chunk->flags & UATH_CFLAGS_FINAL) == 0) || |
| chunk->seqnum != 0) { |
| ar5523_dbg(ar, "RX: No final flag. s: %d f: %02x l: %d\n", |
| chunk->seqnum, chunk->flags, |
| be16_to_cpu(chunk->length)); |
| goto skip; |
| } |
| |
| /* Rx descriptor is located at the end, 32-bit aligned */ |
| desc = (struct ar5523_rx_desc *) |
| (data->skb->data + usblen - sizeof(struct ar5523_rx_desc)); |
| |
| rxlen = be32_to_cpu(desc->len); |
| if (rxlen > ar->rxbufsz) { |
| ar5523_dbg(ar, "RX: Bad descriptor (len=%d)\n", |
| be32_to_cpu(desc->len)); |
| goto skip; |
| } |
| |
| if (!rxlen) { |
| ar5523_dbg(ar, "RX: rxlen is 0\n"); |
| goto skip; |
| } |
| |
| if (be32_to_cpu(desc->status) != 0) { |
| ar5523_dbg(ar, "Bad RX status (0x%x len = %d). Skip\n", |
| be32_to_cpu(desc->status), be32_to_cpu(desc->len)); |
| goto skip; |
| } |
| |
| skb_reserve(data->skb, sizeof(*chunk)); |
| skb_put(data->skb, rxlen - sizeof(struct ar5523_rx_desc)); |
| |
| hdrlen = ieee80211_get_hdrlen_from_skb(data->skb); |
| if (!IS_ALIGNED(hdrlen, 4)) { |
| ar5523_dbg(ar, "eek, alignment workaround activated\n"); |
| pad = ALIGN(hdrlen, 4) - hdrlen; |
| memmove(data->skb->data + pad, data->skb->data, hdrlen); |
| skb_pull(data->skb, pad); |
| skb_put(data->skb, pad); |
| } |
| |
| rx_status = IEEE80211_SKB_RXCB(data->skb); |
| memset(rx_status, 0, sizeof(*rx_status)); |
| rx_status->freq = be32_to_cpu(desc->channel); |
| rx_status->band = hw->conf.chandef.chan->band; |
| rx_status->signal = -95 + be32_to_cpu(desc->rssi); |
| |
| ieee80211_rx_irqsafe(hw, data->skb); |
| data->skb = NULL; |
| |
| skip: |
| if (data->skb) { |
| dev_kfree_skb_irq(data->skb); |
| data->skb = NULL; |
| } |
| |
| ar5523_rx_data_put(ar, data); |
| if (atomic_inc_return(&ar->rx_data_free_cnt) >= |
| AR5523_RX_DATA_REFILL_COUNT && |
| test_bit(AR5523_HW_UP, &ar->flags)) |
| queue_work(ar->wq, &ar->rx_refill_work); |
| } |
| |
| static void ar5523_rx_refill_work(struct work_struct *work) |
| { |
| struct ar5523 *ar = container_of(work, struct ar5523, rx_refill_work); |
| struct ar5523_rx_data *data; |
| unsigned long flags; |
| int error; |
| |
| ar5523_dbg(ar, "%s\n", __func__); |
| do { |
| spin_lock_irqsave(&ar->rx_data_list_lock, flags); |
| |
| if (!list_empty(&ar->rx_data_free)) |
| data = (struct ar5523_rx_data *) ar->rx_data_free.next; |
| else |
| data = NULL; |
| spin_unlock_irqrestore(&ar->rx_data_list_lock, flags); |
| |
| if (!data) |
| goto done; |
| |
| data->skb = alloc_skb(ar->rxbufsz, GFP_KERNEL); |
| if (!data->skb) { |
| ar5523_err(ar, "could not allocate rx skbuff\n"); |
| return; |
| } |
| |
| usb_fill_bulk_urb(data->urb, ar->dev, |
| ar5523_data_rx_pipe(ar->dev), data->skb->data, |
| ar->rxbufsz, ar5523_data_rx_cb, data); |
| |
| spin_lock_irqsave(&ar->rx_data_list_lock, flags); |
| list_move(&data->list, &ar->rx_data_used); |
| spin_unlock_irqrestore(&ar->rx_data_list_lock, flags); |
| atomic_dec(&ar->rx_data_free_cnt); |
| |
| error = usb_submit_urb(data->urb, GFP_KERNEL); |
| if (error) { |
| kfree_skb(data->skb); |
| if (error != -ENODEV) |
| ar5523_err(ar, "Err sending rx data urb %d\n", |
| error); |
| ar5523_rx_data_put(ar, data); |
| atomic_inc(&ar->rx_data_free_cnt); |
| return; |
| } |
| |
| } while (true); |
| done: |
| return; |
| } |
| |
| static void ar5523_cancel_rx_bufs(struct ar5523 *ar) |
| { |
| struct ar5523_rx_data *data; |
| unsigned long flags; |
| |
| do { |
| spin_lock_irqsave(&ar->rx_data_list_lock, flags); |
| if (!list_empty(&ar->rx_data_used)) |
| data = (struct ar5523_rx_data *) ar->rx_data_used.next; |
| else |
| data = NULL; |
| spin_unlock_irqrestore(&ar->rx_data_list_lock, flags); |
| |
| if (!data) |
| break; |
| |
| usb_kill_urb(data->urb); |
| list_move(&data->list, &ar->rx_data_free); |
| atomic_inc(&ar->rx_data_free_cnt); |
| } while (data); |
| } |
| |
| static void ar5523_free_rx_bufs(struct ar5523 *ar) |
| { |
| struct ar5523_rx_data *data; |
| |
| ar5523_cancel_rx_bufs(ar); |
| while (!list_empty(&ar->rx_data_free)) { |
| data = (struct ar5523_rx_data *) ar->rx_data_free.next; |
| list_del(&data->list); |
| usb_free_urb(data->urb); |
| } |
| } |
| |
| static int ar5523_alloc_rx_bufs(struct ar5523 *ar) |
| { |
| int i; |
| |
| for (i = 0; i < AR5523_RX_DATA_COUNT; i++) { |
| struct ar5523_rx_data *data = &ar->rx_data[i]; |
| |
| data->ar = ar; |
| data->urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!data->urb) { |
| ar5523_err(ar, "could not allocate rx data urb\n"); |
| goto err; |
| } |
| list_add_tail(&data->list, &ar->rx_data_free); |
| atomic_inc(&ar->rx_data_free_cnt); |
| } |
| return 0; |
| |
| err: |
| ar5523_free_rx_bufs(ar); |
| return -ENOMEM; |
| } |
| |
| static void ar5523_data_tx_pkt_put(struct ar5523 *ar) |
| { |
| atomic_dec(&ar->tx_nr_total); |
| if (!atomic_dec_return(&ar->tx_nr_pending)) { |
| del_timer(&ar->tx_wd_timer); |
| wake_up(&ar->tx_flush_waitq); |
| } |
| |
| if (atomic_read(&ar->tx_nr_total) < AR5523_TX_DATA_RESTART_COUNT) { |
| ar5523_dbg(ar, "restart tx queue\n"); |
| ieee80211_wake_queues(ar->hw); |
| } |
| } |
| |
| static void ar5523_data_tx_cb(struct urb *urb) |
| { |
| struct sk_buff *skb = urb->context; |
| struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb); |
| struct ar5523_tx_data *data = (struct ar5523_tx_data *) |
| txi->driver_data; |
| struct ar5523 *ar = data->ar; |
| unsigned long flags; |
| |
| ar5523_dbg(ar, "data tx urb completed: %d\n", urb->status); |
| |
| spin_lock_irqsave(&ar->tx_data_list_lock, flags); |
| list_del(&data->list); |
| spin_unlock_irqrestore(&ar->tx_data_list_lock, flags); |
| |
| if (urb->status) { |
| ar5523_dbg(ar, "%s: urb status: %d\n", __func__, urb->status); |
| ar5523_data_tx_pkt_put(ar); |
| ieee80211_free_txskb(ar->hw, skb); |
| } else { |
| skb_pull(skb, sizeof(struct ar5523_tx_desc) + sizeof(__be32)); |
| ieee80211_tx_status_irqsafe(ar->hw, skb); |
| } |
| usb_free_urb(urb); |
| } |
| |
| static void ar5523_tx(struct ieee80211_hw *hw, |
| struct ieee80211_tx_control *control, |
| struct sk_buff *skb) |
| { |
| struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb); |
| struct ar5523_tx_data *data = (struct ar5523_tx_data *) |
| txi->driver_data; |
| struct ar5523 *ar = hw->priv; |
| unsigned long flags; |
| |
| ar5523_dbg(ar, "tx called\n"); |
| if (atomic_inc_return(&ar->tx_nr_total) >= AR5523_TX_DATA_COUNT) { |
| ar5523_dbg(ar, "tx queue full\n"); |
| ar5523_dbg(ar, "stop queues (tot %d pend %d)\n", |
| atomic_read(&ar->tx_nr_total), |
| atomic_read(&ar->tx_nr_pending)); |
| ieee80211_stop_queues(hw); |
| } |
| |
| data->skb = skb; |
| |
| spin_lock_irqsave(&ar->tx_data_list_lock, flags); |
| list_add_tail(&data->list, &ar->tx_queue_pending); |
| spin_unlock_irqrestore(&ar->tx_data_list_lock, flags); |
| |
| ieee80211_queue_work(ar->hw, &ar->tx_work); |
| } |
| |
| static void ar5523_tx_work_locked(struct ar5523 *ar) |
| { |
| struct ar5523_tx_data *data; |
| struct ar5523_tx_desc *desc; |
| struct ar5523_chunk *chunk; |
| struct ieee80211_tx_info *txi; |
| struct urb *urb; |
| struct sk_buff *skb; |
| int error = 0, paylen; |
| u32 txqid; |
| unsigned long flags; |
| |
| BUILD_BUG_ON(sizeof(struct ar5523_tx_data) > |
| IEEE80211_TX_INFO_DRIVER_DATA_SIZE); |
| |
| ar5523_dbg(ar, "%s\n", __func__); |
| do { |
| spin_lock_irqsave(&ar->tx_data_list_lock, flags); |
| if (!list_empty(&ar->tx_queue_pending)) { |
| data = (struct ar5523_tx_data *) |
| ar->tx_queue_pending.next; |
| list_del(&data->list); |
| } else |
| data = NULL; |
| spin_unlock_irqrestore(&ar->tx_data_list_lock, flags); |
| |
| if (!data) |
| break; |
| |
| skb = data->skb; |
| txqid = 0; |
| txi = IEEE80211_SKB_CB(skb); |
| paylen = skb->len; |
| urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!urb) { |
| ar5523_err(ar, "Failed to allocate TX urb\n"); |
| ieee80211_free_txskb(ar->hw, skb); |
| continue; |
| } |
| |
| data->ar = ar; |
| data->urb = urb; |
| |
| desc = (struct ar5523_tx_desc *)skb_push(skb, sizeof(*desc)); |
| chunk = (struct ar5523_chunk *)skb_push(skb, sizeof(*chunk)); |
| |
| chunk->seqnum = 0; |
| chunk->flags = UATH_CFLAGS_FINAL; |
| chunk->length = cpu_to_be16(skb->len); |
| |
| desc->msglen = cpu_to_be32(skb->len); |
| desc->msgid = AR5523_DATA_ID; |
| desc->buflen = cpu_to_be32(paylen); |
| desc->type = cpu_to_be32(WDCMSG_SEND); |
| desc->flags = cpu_to_be32(UATH_TX_NOTIFY); |
| |
| if (test_bit(AR5523_CONNECTED, &ar->flags)) |
| desc->connid = cpu_to_be32(AR5523_ID_BSS); |
| else |
| desc->connid = cpu_to_be32(AR5523_ID_BROADCAST); |
| |
| if (txi->flags & IEEE80211_TX_CTL_USE_MINRATE) |
| txqid |= UATH_TXQID_MINRATE; |
| |
| desc->txqid = cpu_to_be32(txqid); |
| |
| urb->transfer_flags = URB_ZERO_PACKET; |
| usb_fill_bulk_urb(urb, ar->dev, ar5523_data_tx_pipe(ar->dev), |
| skb->data, skb->len, ar5523_data_tx_cb, skb); |
| |
| spin_lock_irqsave(&ar->tx_data_list_lock, flags); |
| list_add_tail(&data->list, &ar->tx_queue_submitted); |
| spin_unlock_irqrestore(&ar->tx_data_list_lock, flags); |
| mod_timer(&ar->tx_wd_timer, jiffies + AR5523_TX_WD_TIMEOUT); |
| atomic_inc(&ar->tx_nr_pending); |
| |
| ar5523_dbg(ar, "TX Frame (%d pending)\n", |
| atomic_read(&ar->tx_nr_pending)); |
| error = usb_submit_urb(urb, GFP_KERNEL); |
| if (error) { |
| ar5523_err(ar, "error %d when submitting tx urb\n", |
| error); |
| spin_lock_irqsave(&ar->tx_data_list_lock, flags); |
| list_del(&data->list); |
| spin_unlock_irqrestore(&ar->tx_data_list_lock, flags); |
| atomic_dec(&ar->tx_nr_pending); |
| ar5523_data_tx_pkt_put(ar); |
| usb_free_urb(urb); |
| ieee80211_free_txskb(ar->hw, skb); |
| } |
| } while (true); |
| } |
| |
| static void ar5523_tx_work(struct work_struct *work) |
| { |
| struct ar5523 *ar = container_of(work, struct ar5523, tx_work); |
| |
| ar5523_dbg(ar, "%s\n", __func__); |
| mutex_lock(&ar->mutex); |
| ar5523_tx_work_locked(ar); |
| mutex_unlock(&ar->mutex); |
| } |
| |
| static void ar5523_tx_wd_timer(unsigned long arg) |
| { |
| struct ar5523 *ar = (struct ar5523 *) arg; |
| |
| ar5523_dbg(ar, "TX watchdog timer triggered\n"); |
| ieee80211_queue_work(ar->hw, &ar->tx_wd_work); |
| } |
| |
| static void ar5523_tx_wd_work(struct work_struct *work) |
| { |
| struct ar5523 *ar = container_of(work, struct ar5523, tx_wd_work); |
| |
| /* Occasionally the TX queues stop responding. The only way to |
| * recover seems to be to reset the dongle. |
| */ |
| |
| mutex_lock(&ar->mutex); |
| ar5523_err(ar, "TX queue stuck (tot %d pend %d)\n", |
| atomic_read(&ar->tx_nr_total), |
| atomic_read(&ar->tx_nr_pending)); |
| |
| ar5523_err(ar, "Will restart dongle.\n"); |
| ar5523_cmd_write(ar, WDCMSG_TARGET_RESET, NULL, 0, 0); |
| mutex_unlock(&ar->mutex); |
| } |
| |
| static void ar5523_flush_tx(struct ar5523 *ar) |
| { |
| ar5523_tx_work_locked(ar); |
| |
| /* Don't waste time trying to flush if USB is disconnected */ |
| if (test_bit(AR5523_USB_DISCONNECTED, &ar->flags)) |
| return; |
| if (!wait_event_timeout(ar->tx_flush_waitq, |
| !atomic_read(&ar->tx_nr_pending), AR5523_FLUSH_TIMEOUT)) |
| ar5523_err(ar, "flush timeout (tot %d pend %d)\n", |
| atomic_read(&ar->tx_nr_total), |
| atomic_read(&ar->tx_nr_pending)); |
| } |
| |
| static void ar5523_free_tx_cmd(struct ar5523 *ar) |
| { |
| struct ar5523_tx_cmd *cmd = &ar->tx_cmd; |
| |
| usb_free_coherent(ar->dev, AR5523_MAX_RXCMDSZ, cmd->buf_tx, |
| cmd->urb_tx->transfer_dma); |
| usb_free_urb(cmd->urb_tx); |
| } |
| |
| static int ar5523_alloc_tx_cmd(struct ar5523 *ar) |
| { |
| struct ar5523_tx_cmd *cmd = &ar->tx_cmd; |
| |
| cmd->ar = ar; |
| init_completion(&cmd->done); |
| |
| cmd->urb_tx = usb_alloc_urb(0, GFP_KERNEL); |
| if (!cmd->urb_tx) { |
| ar5523_err(ar, "could not allocate urb\n"); |
| return -ENOMEM; |
| } |
| cmd->buf_tx = usb_alloc_coherent(ar->dev, AR5523_MAX_TXCMDSZ, |
| GFP_KERNEL, |
| &cmd->urb_tx->transfer_dma); |
| if (!cmd->buf_tx) { |
| usb_free_urb(cmd->urb_tx); |
| return -ENOMEM; |
| } |
| return 0; |
| } |
| |
| /* |
| * This function is called periodically (every second) when associated to |
| * query device statistics. |
| */ |
| static void ar5523_stat_work(struct work_struct *work) |
| { |
| struct ar5523 *ar = container_of(work, struct ar5523, stat_work.work); |
| int error; |
| |
| ar5523_dbg(ar, "%s\n", __func__); |
| mutex_lock(&ar->mutex); |
| |
| /* |
| * Send request for statistics asynchronously once a second. This |
| * seems to be important. Throughput is a lot better if this is done. |
| */ |
| error = ar5523_cmd_write(ar, WDCMSG_TARGET_GET_STATS, NULL, 0, 0); |
| if (error) |
| ar5523_err(ar, "could not query stats, error %d\n", error); |
| mutex_unlock(&ar->mutex); |
| ieee80211_queue_delayed_work(ar->hw, &ar->stat_work, HZ); |
| } |
| |
| /* |
| * Interface routines to the mac80211 stack. |
| */ |
| static int ar5523_start(struct ieee80211_hw *hw) |
| { |
| struct ar5523 *ar = hw->priv; |
| int error; |
| __be32 val; |
| |
| ar5523_dbg(ar, "start called\n"); |
| |
| mutex_lock(&ar->mutex); |
| val = cpu_to_be32(0); |
| ar5523_cmd_write(ar, WDCMSG_BIND, &val, sizeof(val), 0); |
| |
| /* set MAC address */ |
| ar5523_config_multi(ar, CFG_MAC_ADDR, &ar->hw->wiphy->perm_addr, |
| ETH_ALEN); |
| |
| /* XXX honor net80211 state */ |
| ar5523_config(ar, CFG_RATE_CONTROL_ENABLE, 0x00000001); |
| ar5523_config(ar, CFG_DIVERSITY_CTL, 0x00000001); |
| ar5523_config(ar, CFG_ABOLT, 0x0000003f); |
| ar5523_config(ar, CFG_WME_ENABLED, 0x00000000); |
| |
| ar5523_config(ar, CFG_SERVICE_TYPE, 1); |
| ar5523_config(ar, CFG_TP_SCALE, 0x00000000); |
| ar5523_config(ar, CFG_TPC_HALF_DBM5, 0x0000003c); |
| ar5523_config(ar, CFG_TPC_HALF_DBM2, 0x0000003c); |
| ar5523_config(ar, CFG_OVERRD_TX_POWER, 0x00000000); |
| ar5523_config(ar, CFG_GMODE_PROTECTION, 0x00000000); |
| ar5523_config(ar, CFG_GMODE_PROTECT_RATE_INDEX, 0x00000003); |
| ar5523_config(ar, CFG_PROTECTION_TYPE, 0x00000000); |
| ar5523_config(ar, CFG_MODE_CTS, 0x00000002); |
| |
| error = ar5523_cmd_read(ar, WDCMSG_TARGET_START, NULL, 0, |
| &val, sizeof(val), AR5523_CMD_FLAG_MAGIC); |
| if (error) { |
| ar5523_dbg(ar, "could not start target, error %d\n", error); |
| goto err; |
| } |
| ar5523_dbg(ar, "WDCMSG_TARGET_START returns handle: 0x%x\n", |
| be32_to_cpu(val)); |
| |
| ar5523_switch_chan(ar); |
| |
| val = cpu_to_be32(TARGET_DEVICE_AWAKE); |
| ar5523_cmd_write(ar, WDCMSG_SET_PWR_MODE, &val, sizeof(val), 0); |
| /* XXX? check */ |
| ar5523_cmd_write(ar, WDCMSG_RESET_KEY_CACHE, NULL, 0, 0); |
| |
| set_bit(AR5523_HW_UP, &ar->flags); |
| queue_work(ar->wq, &ar->rx_refill_work); |
| |
| /* enable Rx */ |
| ar5523_set_rxfilter(ar, 0, UATH_FILTER_OP_INIT); |
| ar5523_set_rxfilter(ar, |
| UATH_FILTER_RX_UCAST | UATH_FILTER_RX_MCAST | |
| UATH_FILTER_RX_BCAST | UATH_FILTER_RX_BEACON, |
| UATH_FILTER_OP_SET); |
| |
| ar5523_set_ledsteady(ar, UATH_LED_ACTIVITY, UATH_LED_ON); |
| ar5523_dbg(ar, "start OK\n"); |
| |
| err: |
| mutex_unlock(&ar->mutex); |
| return error; |
| } |
| |
| static void ar5523_stop(struct ieee80211_hw *hw) |
| { |
| struct ar5523 *ar = hw->priv; |
| |
| ar5523_dbg(ar, "stop called\n"); |
| |
| cancel_delayed_work_sync(&ar->stat_work); |
| mutex_lock(&ar->mutex); |
| clear_bit(AR5523_HW_UP, &ar->flags); |
| |
| ar5523_set_ledsteady(ar, UATH_LED_LINK, UATH_LED_OFF); |
| ar5523_set_ledsteady(ar, UATH_LED_ACTIVITY, UATH_LED_OFF); |
| |
| ar5523_cmd_write(ar, WDCMSG_TARGET_STOP, NULL, 0, 0); |
| |
| del_timer_sync(&ar->tx_wd_timer); |
| cancel_work_sync(&ar->tx_wd_work); |
| cancel_work_sync(&ar->rx_refill_work); |
| ar5523_cancel_rx_bufs(ar); |
| mutex_unlock(&ar->mutex); |
| } |
| |
| static int ar5523_set_rts_threshold(struct ieee80211_hw *hw, u32 value) |
| { |
| struct ar5523 *ar = hw->priv; |
| int ret; |
| |
| ar5523_dbg(ar, "set_rts_threshold called\n"); |
| mutex_lock(&ar->mutex); |
| |
| ret = ar5523_config(ar, CFG_USER_RTS_THRESHOLD, value); |
| |
| mutex_unlock(&ar->mutex); |
| return ret; |
| } |
| |
| static void ar5523_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
| u32 queues, bool drop) |
| { |
| struct ar5523 *ar = hw->priv; |
| |
| ar5523_dbg(ar, "flush called\n"); |
| ar5523_flush_tx(ar); |
| } |
| |
| static int ar5523_add_interface(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct ar5523 *ar = hw->priv; |
| |
| ar5523_dbg(ar, "add interface called\n"); |
| |
| if (ar->vif) { |
| ar5523_dbg(ar, "invalid add_interface\n"); |
| return -EOPNOTSUPP; |
| } |
| |
| switch (vif->type) { |
| case NL80211_IFTYPE_STATION: |
| ar->vif = vif; |
| break; |
| default: |
| return -EOPNOTSUPP; |
| } |
| return 0; |
| } |
| |
| static void ar5523_remove_interface(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif) |
| { |
| struct ar5523 *ar = hw->priv; |
| |
| ar5523_dbg(ar, "remove interface called\n"); |
| ar->vif = NULL; |
| } |
| |
| static int ar5523_hwconfig(struct ieee80211_hw *hw, u32 changed) |
| { |
| struct ar5523 *ar = hw->priv; |
| |
| ar5523_dbg(ar, "config called\n"); |
| mutex_lock(&ar->mutex); |
| if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { |
| ar5523_dbg(ar, "Do channel switch\n"); |
| ar5523_flush_tx(ar); |
| ar5523_switch_chan(ar); |
| } |
| mutex_unlock(&ar->mutex); |
| return 0; |
| } |
| |
| static int ar5523_get_wlan_mode(struct ar5523 *ar, |
| struct ieee80211_bss_conf *bss_conf) |
| { |
| struct ieee80211_supported_band *band; |
| int bit; |
| struct ieee80211_sta *sta; |
| u32 sta_rate_set; |
| |
| band = ar->hw->wiphy->bands[ar->hw->conf.chandef.chan->band]; |
| sta = ieee80211_find_sta(ar->vif, bss_conf->bssid); |
| if (!sta) { |
| ar5523_info(ar, "STA not found!\n"); |
| return WLAN_MODE_11b; |
| } |
| sta_rate_set = sta->supp_rates[ar->hw->conf.chandef.chan->band]; |
| |
| for (bit = 0; bit < band->n_bitrates; bit++) { |
| if (sta_rate_set & 1) { |
| int rate = band->bitrates[bit].bitrate; |
| switch (rate) { |
| case 60: |
| case 90: |
| case 120: |
| case 180: |
| case 240: |
| case 360: |
| case 480: |
| case 540: |
| return WLAN_MODE_11g; |
| } |
| } |
| sta_rate_set >>= 1; |
| } |
| return WLAN_MODE_11b; |
| } |
| |
| static void ar5523_create_rateset(struct ar5523 *ar, |
| struct ieee80211_bss_conf *bss_conf, |
| struct ar5523_cmd_rateset *rs, |
| bool basic) |
| { |
| struct ieee80211_supported_band *band; |
| struct ieee80211_sta *sta; |
| int bit, i = 0; |
| u32 sta_rate_set, basic_rate_set; |
| |
| sta = ieee80211_find_sta(ar->vif, bss_conf->bssid); |
| basic_rate_set = bss_conf->basic_rates; |
| if (!sta) { |
| ar5523_info(ar, "STA not found. Cannot set rates\n"); |
| sta_rate_set = bss_conf->basic_rates; |
| } else |
| sta_rate_set = sta->supp_rates[ar->hw->conf.chandef.chan->band]; |
| |
| ar5523_dbg(ar, "sta rate_set = %08x\n", sta_rate_set); |
| |
| band = ar->hw->wiphy->bands[ar->hw->conf.chandef.chan->band]; |
| for (bit = 0; bit < band->n_bitrates; bit++) { |
| BUG_ON(i >= AR5523_MAX_NRATES); |
| ar5523_dbg(ar, "Considering rate %d : %d\n", |
| band->bitrates[bit].hw_value, sta_rate_set & 1); |
| if (sta_rate_set & 1) { |
| rs->set[i] = band->bitrates[bit].hw_value; |
| if (basic_rate_set & 1 && basic) |
| rs->set[i] |= 0x80; |
| i++; |
| } |
| sta_rate_set >>= 1; |
| basic_rate_set >>= 1; |
| } |
| |
| rs->length = i; |
| } |
| |
| static int ar5523_set_basic_rates(struct ar5523 *ar, |
| struct ieee80211_bss_conf *bss) |
| { |
| struct ar5523_cmd_rates rates; |
| |
| memset(&rates, 0, sizeof(rates)); |
| rates.connid = cpu_to_be32(2); /* XXX */ |
| rates.size = cpu_to_be32(sizeof(struct ar5523_cmd_rateset)); |
| ar5523_create_rateset(ar, bss, &rates.rateset, true); |
| |
| return ar5523_cmd_write(ar, WDCMSG_SET_BASIC_RATE, &rates, |
| sizeof(rates), 0); |
| } |
| |
| static int ar5523_create_connection(struct ar5523 *ar, |
| struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *bss) |
| { |
| struct ar5523_cmd_create_connection create; |
| int wlan_mode; |
| |
| memset(&create, 0, sizeof(create)); |
| create.connid = cpu_to_be32(2); |
| create.bssid = cpu_to_be32(0); |
| /* XXX packed or not? */ |
| create.size = cpu_to_be32(sizeof(struct ar5523_cmd_rateset)); |
| |
| ar5523_create_rateset(ar, bss, &create.connattr.rateset, false); |
| |
| wlan_mode = ar5523_get_wlan_mode(ar, bss); |
| create.connattr.wlanmode = cpu_to_be32(wlan_mode); |
| |
| return ar5523_cmd_write(ar, WDCMSG_CREATE_CONNECTION, &create, |
| sizeof(create), 0); |
| } |
| |
| static int ar5523_write_associd(struct ar5523 *ar, |
| struct ieee80211_bss_conf *bss) |
| { |
| struct ar5523_cmd_set_associd associd; |
| |
| memset(&associd, 0, sizeof(associd)); |
| associd.defaultrateix = cpu_to_be32(0); /* XXX */ |
| associd.associd = cpu_to_be32(bss->aid); |
| associd.timoffset = cpu_to_be32(0x3b); /* XXX */ |
| memcpy(associd.bssid, bss->bssid, ETH_ALEN); |
| return ar5523_cmd_write(ar, WDCMSG_WRITE_ASSOCID, &associd, |
| sizeof(associd), 0); |
| } |
| |
| static void ar5523_bss_info_changed(struct ieee80211_hw *hw, |
| struct ieee80211_vif *vif, |
| struct ieee80211_bss_conf *bss, |
| u32 changed) |
| { |
| struct ar5523 *ar = hw->priv; |
| int error; |
| |
| ar5523_dbg(ar, "bss_info_changed called\n"); |
| mutex_lock(&ar->mutex); |
| |
| if (!(changed & BSS_CHANGED_ASSOC)) |
| goto out_unlock; |
| |
| if (bss->assoc) { |
| error = ar5523_create_connection(ar, vif, bss); |
| if (error) { |
| ar5523_err(ar, "could not create connection\n"); |
| goto out_unlock; |
| } |
| |
| error = ar5523_set_basic_rates(ar, bss); |
| if (error) { |
| ar5523_err(ar, "could not set negotiated rate set\n"); |
| goto out_unlock; |
| } |
| |
| error = ar5523_write_associd(ar, bss); |
| if (error) { |
| ar5523_err(ar, "could not set association\n"); |
| goto out_unlock; |
| } |
| |
| /* turn link LED on */ |
| ar5523_set_ledsteady(ar, UATH_LED_LINK, UATH_LED_ON); |
| set_bit(AR5523_CONNECTED, &ar->flags); |
| ieee80211_queue_delayed_work(hw, &ar->stat_work, HZ); |
| |
| } else { |
| cancel_delayed_work(&ar->stat_work); |
| clear_bit(AR5523_CONNECTED, &ar->flags); |
| ar5523_set_ledsteady(ar, UATH_LED_LINK, UATH_LED_OFF); |
| } |
| |
| out_unlock: |
| mutex_unlock(&ar->mutex); |
| |
| } |
| |
| #define AR5523_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \ |
| FIF_ALLMULTI | \ |
| FIF_FCSFAIL | \ |
| FIF_OTHER_BSS) |
| |
| static void ar5523_configure_filter(struct ieee80211_hw *hw, |
| unsigned int changed_flags, |
| unsigned int *total_flags, |
| u64 multicast) |
| { |
| struct ar5523 *ar = hw->priv; |
| u32 filter = 0; |
| |
| ar5523_dbg(ar, "configure_filter called\n"); |
| mutex_lock(&ar->mutex); |
| ar5523_flush_tx(ar); |
| |
| *total_flags &= AR5523_SUPPORTED_FILTERS; |
| |
| /* The filters seems strange. UATH_FILTER_RX_BCAST and |
| * UATH_FILTER_RX_MCAST does not result in those frames being RXed. |
| * The only way I have found to get [mb]cast frames seems to be |
| * to set UATH_FILTER_RX_PROM. */ |
| filter |= UATH_FILTER_RX_UCAST | UATH_FILTER_RX_MCAST | |
| UATH_FILTER_RX_BCAST | UATH_FILTER_RX_BEACON | |
| UATH_FILTER_RX_PROM; |
| |
| ar5523_set_rxfilter(ar, 0, UATH_FILTER_OP_INIT); |
| ar5523_set_rxfilter(ar, filter, UATH_FILTER_OP_SET); |
| |
| mutex_unlock(&ar->mutex); |
| } |
| |
| static const struct ieee80211_ops ar5523_ops = { |
| .start = ar5523_start, |
| .stop = ar5523_stop, |
| .tx = ar5523_tx, |
| .set_rts_threshold = ar5523_set_rts_threshold, |
| .add_interface = ar5523_add_interface, |
| .remove_interface = ar5523_remove_interface, |
| .config = ar5523_hwconfig, |
| .bss_info_changed = ar5523_bss_info_changed, |
| .configure_filter = ar5523_configure_filter, |
| .flush = ar5523_flush, |
| }; |
| |
| static int ar5523_host_available(struct ar5523 *ar) |
| { |
| struct ar5523_cmd_host_available setup; |
| |
| /* inform target the host is available */ |
| setup.sw_ver_major = cpu_to_be32(ATH_SW_VER_MAJOR); |
| setup.sw_ver_minor = cpu_to_be32(ATH_SW_VER_MINOR); |
| setup.sw_ver_patch = cpu_to_be32(ATH_SW_VER_PATCH); |
| setup.sw_ver_build = cpu_to_be32(ATH_SW_VER_BUILD); |
| return ar5523_cmd_read(ar, WDCMSG_HOST_AVAILABLE, |
| &setup, sizeof(setup), NULL, 0, 0); |
| } |
| |
| static int ar5523_get_devstatus(struct ar5523 *ar) |
| { |
| u8 macaddr[ETH_ALEN]; |
| int error; |
| |
| /* retrieve MAC address */ |
| error = ar5523_get_status(ar, ST_MAC_ADDR, macaddr, ETH_ALEN); |
| if (error) { |
| ar5523_err(ar, "could not read MAC address\n"); |
| return error; |
| } |
| |
| SET_IEEE80211_PERM_ADDR(ar->hw, macaddr); |
| |
| error = ar5523_get_status(ar, ST_SERIAL_NUMBER, |
| &ar->serial[0], sizeof(ar->serial)); |
| if (error) { |
| ar5523_err(ar, "could not read device serial number\n"); |
| return error; |
| } |
| return 0; |
| } |
| |
| #define AR5523_SANE_RXBUFSZ 2000 |
| |
| static int ar5523_get_max_rxsz(struct ar5523 *ar) |
| { |
| int error; |
| __be32 rxsize; |
| |
| /* Get max rx size */ |
| error = ar5523_get_status(ar, ST_WDC_TRANSPORT_CHUNK_SIZE, &rxsize, |
| sizeof(rxsize)); |
| if (error != 0) { |
| ar5523_err(ar, "could not read max RX size\n"); |
| return error; |
| } |
| |
| ar->rxbufsz = be32_to_cpu(rxsize); |
| |
| if (!ar->rxbufsz || ar->rxbufsz > AR5523_SANE_RXBUFSZ) { |
| ar5523_err(ar, "Bad rxbufsz from device. Using %d instead\n", |
| AR5523_SANE_RXBUFSZ); |
| ar->rxbufsz = AR5523_SANE_RXBUFSZ; |
| } |
| |
| ar5523_dbg(ar, "Max RX buf size: %d\n", ar->rxbufsz); |
| return 0; |
| } |
| |
| /* |
| * This is copied from rtl818x, but we should probably move this |
| * to common code as in OpenBSD. |
| */ |
| static const struct ieee80211_rate ar5523_rates[] = { |
| { .bitrate = 10, .hw_value = 2, }, |
| { .bitrate = 20, .hw_value = 4 }, |
| { .bitrate = 55, .hw_value = 11, }, |
| { .bitrate = 110, .hw_value = 22, }, |
| { .bitrate = 60, .hw_value = 12, }, |
| { .bitrate = 90, .hw_value = 18, }, |
| { .bitrate = 120, .hw_value = 24, }, |
| { .bitrate = 180, .hw_value = 36, }, |
| { .bitrate = 240, .hw_value = 48, }, |
| { .bitrate = 360, .hw_value = 72, }, |
| { .bitrate = 480, .hw_value = 96, }, |
| { .bitrate = 540, .hw_value = 108, }, |
| }; |
| |
| static const struct ieee80211_channel ar5523_channels[] = { |
| { .center_freq = 2412 }, |
| { .center_freq = 2417 }, |
| { .center_freq = 2422 }, |
| { .center_freq = 2427 }, |
| { .center_freq = 2432 }, |
| { .center_freq = 2437 }, |
| { .center_freq = 2442 }, |
| { .center_freq = 2447 }, |
| { .center_freq = 2452 }, |
| { .center_freq = 2457 }, |
| { .center_freq = 2462 }, |
| { .center_freq = 2467 }, |
| { .center_freq = 2472 }, |
| { .center_freq = 2484 }, |
| }; |
| |
| static int ar5523_init_modes(struct ar5523 *ar) |
| { |
| BUILD_BUG_ON(sizeof(ar->channels) != sizeof(ar5523_channels)); |
| BUILD_BUG_ON(sizeof(ar->rates) != sizeof(ar5523_rates)); |
| |
| memcpy(ar->channels, ar5523_channels, sizeof(ar5523_channels)); |
| memcpy(ar->rates, ar5523_rates, sizeof(ar5523_rates)); |
| |
| ar->band.band = IEEE80211_BAND_2GHZ; |
| ar->band.channels = ar->channels; |
| ar->band.n_channels = ARRAY_SIZE(ar5523_channels); |
| ar->band.bitrates = ar->rates; |
| ar->band.n_bitrates = ARRAY_SIZE(ar5523_rates); |
| ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &ar->band; |
| return 0; |
| } |
| |
| /* |
| * Load the MIPS R4000 microcode into the device. Once the image is loaded, |
| * the device will detach itself from the bus and reattach later with a new |
| * product Id (a la ezusb). |
| */ |
| static int ar5523_load_firmware(struct usb_device *dev) |
| { |
| struct ar5523_fwblock *txblock, *rxblock; |
| const struct firmware *fw; |
| void *fwbuf; |
| int len, offset; |
| int foolen; /* XXX(hch): handle short transfers */ |
| int error = -ENXIO; |
| |
| if (request_firmware(&fw, AR5523_FIRMWARE_FILE, &dev->dev)) { |
| dev_err(&dev->dev, "no firmware found: %s\n", |
| AR5523_FIRMWARE_FILE); |
| return -ENOENT; |
| } |
| |
| txblock = kmalloc(sizeof(*txblock), GFP_KERNEL); |
| if (!txblock) |
| goto out; |
| |
| rxblock = kmalloc(sizeof(*rxblock), GFP_KERNEL); |
| if (!rxblock) |
| goto out_free_txblock; |
| |
| fwbuf = kmalloc(AR5523_MAX_FWBLOCK_SIZE, GFP_KERNEL); |
| if (!fwbuf) |
| goto out_free_rxblock; |
| |
| memset(txblock, 0, sizeof(struct ar5523_fwblock)); |
| txblock->flags = cpu_to_be32(AR5523_WRITE_BLOCK); |
| txblock->total = cpu_to_be32(fw->size); |
| |
| offset = 0; |
| len = fw->size; |
| while (len > 0) { |
| int mlen = min(len, AR5523_MAX_FWBLOCK_SIZE); |
| |
| txblock->remain = cpu_to_be32(len - mlen); |
| txblock->len = cpu_to_be32(mlen); |
| |
| /* send firmware block meta-data */ |
| error = usb_bulk_msg(dev, ar5523_cmd_tx_pipe(dev), |
| txblock, sizeof(*txblock), &foolen, |
| AR5523_CMD_TIMEOUT); |
| if (error) { |
| dev_err(&dev->dev, |
| "could not send firmware block info\n"); |
| goto out_free_fwbuf; |
| } |
| |
| /* send firmware block data */ |
| memcpy(fwbuf, fw->data + offset, mlen); |
| error = usb_bulk_msg(dev, ar5523_data_tx_pipe(dev), |
| fwbuf, mlen, &foolen, |
| AR5523_DATA_TIMEOUT); |
| if (error) { |
| dev_err(&dev->dev, |
| "could not send firmware block data\n"); |
| goto out_free_fwbuf; |
| } |
| |
| /* wait for ack from firmware */ |
| error = usb_bulk_msg(dev, ar5523_cmd_rx_pipe(dev), |
| rxblock, sizeof(*rxblock), &foolen, |
| AR5523_CMD_TIMEOUT); |
| if (error) { |
| dev_err(&dev->dev, |
| "could not read firmware answer\n"); |
| goto out_free_fwbuf; |
| } |
| |
| len -= mlen; |
| offset += mlen; |
| } |
| |
| /* |
| * Set the error to -ENXIO to make sure we continue probing for |
| * a driver. |
| */ |
| error = -ENXIO; |
| |
| out_free_fwbuf: |
| kfree(fwbuf); |
| out_free_rxblock: |
| kfree(rxblock); |
| out_free_txblock: |
| kfree(txblock); |
| out: |
| release_firmware(fw); |
| return error; |
| } |
| |
| static int ar5523_probe(struct usb_interface *intf, |
| const struct usb_device_id *id) |
| { |
| struct usb_device *dev = interface_to_usbdev(intf); |
| struct ieee80211_hw *hw; |
| struct ar5523 *ar; |
| int error = -ENOMEM; |
| |
| /* |
| * Load firmware if the device requires it. This will return |
| * -ENXIO on success and we'll get called back afer the usb |
| * id changes to indicate that the firmware is present. |
| */ |
| if (id->driver_info & AR5523_FLAG_PRE_FIRMWARE) |
| return ar5523_load_firmware(dev); |
| |
| |
| hw = ieee80211_alloc_hw(sizeof(*ar), &ar5523_ops); |
| if (!hw) |
| goto out; |
| SET_IEEE80211_DEV(hw, &intf->dev); |
| |
| ar = hw->priv; |
| ar->hw = hw; |
| ar->dev = dev; |
| mutex_init(&ar->mutex); |
| |
| INIT_DELAYED_WORK(&ar->stat_work, ar5523_stat_work); |
| init_timer(&ar->tx_wd_timer); |
| setup_timer(&ar->tx_wd_timer, ar5523_tx_wd_timer, (unsigned long) ar); |
| INIT_WORK(&ar->tx_wd_work, ar5523_tx_wd_work); |
| INIT_WORK(&ar->tx_work, ar5523_tx_work); |
| INIT_LIST_HEAD(&ar->tx_queue_pending); |
| INIT_LIST_HEAD(&ar->tx_queue_submitted); |
| spin_lock_init(&ar->tx_data_list_lock); |
| atomic_set(&ar->tx_nr_total, 0); |
| atomic_set(&ar->tx_nr_pending, 0); |
| init_waitqueue_head(&ar->tx_flush_waitq); |
| |
| atomic_set(&ar->rx_data_free_cnt, 0); |
| INIT_WORK(&ar->rx_refill_work, ar5523_rx_refill_work); |
| INIT_LIST_HEAD(&ar->rx_data_free); |
| INIT_LIST_HEAD(&ar->rx_data_used); |
| spin_lock_init(&ar->rx_data_list_lock); |
| |
| ar->wq = create_singlethread_workqueue("ar5523"); |
| if (!ar->wq) { |
| ar5523_err(ar, "Could not create wq\n"); |
| goto out_free_ar; |
| } |
| |
| error = ar5523_alloc_rx_bufs(ar); |
| if (error) { |
| ar5523_err(ar, "Could not allocate rx buffers\n"); |
| goto out_free_wq; |
| } |
| |
| error = ar5523_alloc_rx_cmd(ar); |
| if (error) { |
| ar5523_err(ar, "Could not allocate rx command buffers\n"); |
| goto out_free_rx_bufs; |
| } |
| |
| error = ar5523_alloc_tx_cmd(ar); |
| if (error) { |
| ar5523_err(ar, "Could not allocate tx command buffers\n"); |
| goto out_free_rx_cmd; |
| } |
| |
| error = ar5523_submit_rx_cmd(ar); |
| if (error) { |
| ar5523_err(ar, "Failed to submit rx cmd\n"); |
| goto out_free_tx_cmd; |
| } |
| |
| /* |
| * We're now ready to send/receive firmware commands. |
| */ |
| error = ar5523_host_available(ar); |
| if (error) { |
| ar5523_err(ar, "could not initialize adapter\n"); |
| goto out_cancel_rx_cmd; |
| } |
| |
| error = ar5523_get_max_rxsz(ar); |
| if (error) { |
| ar5523_err(ar, "could not get caps from adapter\n"); |
| goto out_cancel_rx_cmd; |
| } |
| |
| error = ar5523_get_devcap(ar); |
| if (error) { |
| ar5523_err(ar, "could not get caps from adapter\n"); |
| goto out_cancel_rx_cmd; |
| } |
| |
| error = ar5523_get_devstatus(ar); |
| if (error != 0) { |
| ar5523_err(ar, "could not get device status\n"); |
| goto out_cancel_rx_cmd; |
| } |
| |
| ar5523_info(ar, "MAC/BBP AR5523, RF AR%c112\n", |
| (id->driver_info & AR5523_FLAG_ABG) ? '5' : '2'); |
| |
| ar->vif = NULL; |
| hw->flags = IEEE80211_HW_RX_INCLUDES_FCS | |
| IEEE80211_HW_SIGNAL_DBM | |
| IEEE80211_HW_HAS_RATE_CONTROL; |
| hw->extra_tx_headroom = sizeof(struct ar5523_tx_desc) + |
| sizeof(struct ar5523_chunk); |
| hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); |
| hw->queues = 1; |
| |
| error = ar5523_init_modes(ar); |
| if (error) |
| goto out_cancel_rx_cmd; |
| |
| usb_set_intfdata(intf, hw); |
| |
| error = ieee80211_register_hw(hw); |
| if (error) { |
| ar5523_err(ar, "could not register device\n"); |
| goto out_cancel_rx_cmd; |
| } |
| |
| ar5523_info(ar, "Found and initialized AR5523 device\n"); |
| return 0; |
| |
| out_cancel_rx_cmd: |
| ar5523_cancel_rx_cmd(ar); |
| out_free_tx_cmd: |
| ar5523_free_tx_cmd(ar); |
| out_free_rx_cmd: |
| ar5523_free_rx_cmd(ar); |
| out_free_rx_bufs: |
| ar5523_free_rx_bufs(ar); |
| out_free_wq: |
| destroy_workqueue(ar->wq); |
| out_free_ar: |
| ieee80211_free_hw(hw); |
| out: |
| return error; |
| } |
| |
| static void ar5523_disconnect(struct usb_interface *intf) |
| { |
| struct ieee80211_hw *hw = usb_get_intfdata(intf); |
| struct ar5523 *ar = hw->priv; |
| |
| ar5523_dbg(ar, "detaching\n"); |
| set_bit(AR5523_USB_DISCONNECTED, &ar->flags); |
| |
| ieee80211_unregister_hw(hw); |
| |
| ar5523_cancel_rx_cmd(ar); |
| ar5523_free_tx_cmd(ar); |
| ar5523_free_rx_cmd(ar); |
| ar5523_free_rx_bufs(ar); |
| |
| destroy_workqueue(ar->wq); |
| |
| ieee80211_free_hw(hw); |
| usb_set_intfdata(intf, NULL); |
| } |
| |
| #define AR5523_DEVICE_UG(vendor, device) \ |
| { USB_DEVICE((vendor), (device)) }, \ |
| { USB_DEVICE((vendor), (device) + 1), \ |
| .driver_info = AR5523_FLAG_PRE_FIRMWARE } |
| #define AR5523_DEVICE_UX(vendor, device) \ |
| { USB_DEVICE((vendor), (device)), \ |
| .driver_info = AR5523_FLAG_ABG }, \ |
| { USB_DEVICE((vendor), (device) + 1), \ |
| .driver_info = AR5523_FLAG_ABG|AR5523_FLAG_PRE_FIRMWARE } |
| |
| static struct usb_device_id ar5523_id_table[] = { |
| AR5523_DEVICE_UG(0x168c, 0x0001), /* Atheros / AR5523 */ |
| AR5523_DEVICE_UG(0x0cf3, 0x0001), /* Atheros2 / AR5523_1 */ |
| AR5523_DEVICE_UG(0x0cf3, 0x0003), /* Atheros2 / AR5523_2 */ |
| AR5523_DEVICE_UX(0x0cf3, 0x0005), /* Atheros2 / AR5523_3 */ |
| AR5523_DEVICE_UG(0x0d8e, 0x7801), /* Conceptronic / AR5523_1 */ |
| AR5523_DEVICE_UX(0x0d8e, 0x7811), /* Conceptronic / AR5523_2 */ |
| AR5523_DEVICE_UX(0x2001, 0x3a00), /* Dlink / DWLAG132 */ |
| AR5523_DEVICE_UG(0x2001, 0x3a02), /* Dlink / DWLG132 */ |
| AR5523_DEVICE_UX(0x2001, 0x3a04), /* Dlink / DWLAG122 */ |
| AR5523_DEVICE_UG(0x07d1, 0x3a07), /* D-Link / WUA-2340 rev A1 */ |
| AR5523_DEVICE_UG(0x1690, 0x0712), /* Gigaset / AR5523 */ |
| AR5523_DEVICE_UG(0x1690, 0x0710), /* Gigaset / SMCWUSBTG */ |
| AR5523_DEVICE_UG(0x129b, 0x160b), /* Gigaset / USB stick 108 |
| (CyberTAN Technology) */ |
| AR5523_DEVICE_UG(0x16ab, 0x7801), /* Globalsun / AR5523_1 */ |
| AR5523_DEVICE_UX(0x16ab, 0x7811), /* Globalsun / AR5523_2 */ |
| AR5523_DEVICE_UG(0x0d8e, 0x7802), /* Globalsun / AR5523_3 */ |
| AR5523_DEVICE_UX(0x0846, 0x4300), /* Netgear / WG111U */ |
| AR5523_DEVICE_UG(0x0846, 0x4250), /* Netgear / WG111T */ |
| AR5523_DEVICE_UG(0x0846, 0x5f00), /* Netgear / WPN111 */ |
| AR5523_DEVICE_UG(0x157e, 0x3006), /* Umedia / AR5523_1 */ |
| AR5523_DEVICE_UX(0x157e, 0x3205), /* Umedia / AR5523_2 */ |
| AR5523_DEVICE_UG(0x157e, 0x3006), /* Umedia / TEW444UBEU */ |
| AR5523_DEVICE_UG(0x1435, 0x0826), /* Wistronneweb / AR5523_1 */ |
| AR5523_DEVICE_UX(0x1435, 0x0828), /* Wistronneweb / AR5523_2 */ |
| AR5523_DEVICE_UG(0x0cde, 0x0012), /* Zcom / AR5523 */ |
| AR5523_DEVICE_UG(0x1385, 0x4250), /* Netgear3 / WG111T (2) */ |
| AR5523_DEVICE_UG(0x1385, 0x5f00), /* Netgear / WPN111 */ |
| AR5523_DEVICE_UG(0x1385, 0x5f02), /* Netgear / WPN111 */ |
| { } |
| }; |
| MODULE_DEVICE_TABLE(usb, ar5523_id_table); |
| |
| static struct usb_driver ar5523_driver = { |
| .name = "ar5523", |
| .id_table = ar5523_id_table, |
| .probe = ar5523_probe, |
| .disconnect = ar5523_disconnect, |
| }; |
| |
| module_usb_driver(ar5523_driver); |
| |
| MODULE_LICENSE("Dual BSD/GPL"); |
| MODULE_FIRMWARE(AR5523_FIRMWARE_FILE); |