brcmsmac: Improve tx trace and debug support
Add the brcmsmac_tx trace system for tx debugging. Existing code to dump tx status and descriptors are converted to using tracepoints, allowing for more efficient collection and post-processing of this data. These tracepoints are placed to collect data for all tx frames instead of only on errors. Logging of tx errors is also improved. Acked-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Tested-by: Daniel Wagner <wagi@monom.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Seth Forshee
John W. Linville
parent
5211fa2c48
commit
cdf4352f5c
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@ -22,6 +22,7 @@
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#include "main.h"
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#include "ampdu.h"
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#include "debug.h"
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#include "brcms_trace_events.h"
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/* max number of mpdus in an ampdu */
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#define AMPDU_MAX_MPDU 32
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@ -930,12 +931,6 @@ brcms_c_ampdu_dotxstatus_complete(struct ampdu_info *ampdu, struct scb *scb,
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brcms_err(wlc->hw->d11core,
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"%s: ampdu tx phy error (0x%x)\n",
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__func__, txs->phyerr);
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if (brcm_msg_level & BRCM_DL_INFO) {
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brcmu_prpkt("txpkt (AMPDU)", p);
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brcms_c_print_txdesc((struct d11txh *) p->data);
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}
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brcms_c_print_txstatus(txs);
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}
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}
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@ -948,6 +943,8 @@ brcms_c_ampdu_dotxstatus_complete(struct ampdu_info *ampdu, struct scb *scb,
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h = (struct ieee80211_hdr *)(plcp + D11_PHY_HDR_LEN);
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seq = le16_to_cpu(h->seq_ctrl) >> SEQNUM_SHIFT;
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trace_brcms_txdesc(&wlc->hw->d11core->dev, txh, sizeof(*txh));
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if (tot_mpdu == 0) {
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mcs = plcp[0] & MIMO_PLCP_MCS_MASK;
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mimoantsel = le16_to_cpu(txh->ABI_MimoAntSel);
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@ -1077,6 +1074,8 @@ brcms_c_ampdu_dotxstatus(struct ampdu_info *ampdu, struct scb *scb,
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while (p) {
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tx_info = IEEE80211_SKB_CB(p);
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txh = (struct d11txh *) p->data;
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trace_brcms_txdesc(&wlc->hw->d11core->dev, txh,
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sizeof(*txh));
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mcl = le16_to_cpu(txh->MacTxControlLow);
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brcmu_pkt_buf_free_skb(p);
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/* break out if last packet of ampdu */
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@ -18,6 +18,8 @@
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#define __TRACE_BRCMSMAC_H
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#include <linux/types.h>
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#include <linux/device.h>
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#include <linux/tracepoint.h>
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#include "mac80211_if.h"
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@ -83,6 +85,57 @@ TRACE_EVENT(brcms_dpc,
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)
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);
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM brcmsmac_tx
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TRACE_EVENT(brcms_txdesc,
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TP_PROTO(const struct device *dev,
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void *txh, size_t txh_len),
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TP_ARGS(dev, txh, txh_len),
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TP_STRUCT__entry(
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__string(dev, dev_name(dev))
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__dynamic_array(u8, txh, txh_len)
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),
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TP_fast_assign(
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__assign_str(dev, dev_name(dev));
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memcpy(__get_dynamic_array(txh), txh, txh_len);
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),
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TP_printk("[%s] txdesc", __get_str(dev))
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);
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TRACE_EVENT(brcms_txstatus,
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TP_PROTO(const struct device *dev, u16 framelen, u16 frameid,
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u16 status, u16 lasttxtime, u16 sequence, u16 phyerr,
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u16 ackphyrxsh),
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TP_ARGS(dev, framelen, frameid, status, lasttxtime, sequence, phyerr,
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ackphyrxsh),
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TP_STRUCT__entry(
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__string(dev, dev_name(dev))
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__field(u16, framelen)
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__field(u16, frameid)
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__field(u16, status)
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__field(u16, lasttxtime)
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__field(u16, sequence)
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__field(u16, phyerr)
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__field(u16, ackphyrxsh)
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),
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TP_fast_assign(
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__assign_str(dev, dev_name(dev));
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__entry->framelen = framelen;
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__entry->frameid = frameid;
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__entry->status = status;
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__entry->lasttxtime = lasttxtime;
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__entry->sequence = sequence;
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__entry->phyerr = phyerr;
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__entry->ackphyrxsh = ackphyrxsh;
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),
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TP_printk("[%s] FrameId %#04x TxStatus %#04x LastTxTime %#04x "
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"Seq %#04x PHYTxStatus %#04x RxAck %#04x",
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__get_str(dev), __entry->frameid, __entry->status,
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__entry->lasttxtime, __entry->sequence, __entry->phyerr,
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__entry->ackphyrxsh)
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);
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM brcmsmac_msg
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@ -36,6 +36,7 @@
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#include "soc.h"
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#include "dma.h"
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#include "debug.h"
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#include "brcms_trace_events.h"
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/* watchdog timer, in unit of ms */
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#define TIMER_INTERVAL_WATCHDOG 1000
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@ -862,7 +863,7 @@ brcms_c_dotxstatus(struct brcms_c_info *wlc, struct tx_status *txs)
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struct sk_buff *p = NULL;
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uint queue = NFIFO;
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struct dma_pub *dma = NULL;
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struct d11txh *txh;
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struct d11txh *txh = NULL;
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struct scb *scb = NULL;
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bool free_pdu;
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int tx_rts, tx_frame_count, tx_rts_count;
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@ -875,6 +876,10 @@ brcms_c_dotxstatus(struct brcms_c_info *wlc, struct tx_status *txs)
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int i;
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bool fatal = true;
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trace_brcms_txstatus(&wlc->hw->d11core->dev, txs->framelen,
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txs->frameid, txs->status, txs->lasttxtime,
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txs->sequence, txs->phyerr, txs->ackphyrxsh);
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/* discard intermediate indications for ucode with one legitimate case:
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* e.g. if "useRTS" is set. ucode did a successful rts/cts exchange,
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* but the subsequent tx of DATA failed. so it will start rts/cts
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@ -888,29 +893,30 @@ brcms_c_dotxstatus(struct brcms_c_info *wlc, struct tx_status *txs)
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}
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queue = txs->frameid & TXFID_QUEUE_MASK;
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if (queue >= NFIFO)
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if (queue >= NFIFO) {
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brcms_err(wlc->hw->d11core, "queue %u >= NFIFO\n", queue);
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goto out;
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}
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dma = wlc->hw->di[queue];
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p = dma_getnexttxp(wlc->hw->di[queue], DMA_RANGE_TRANSMITTED);
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if (p == NULL)
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if (p == NULL) {
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brcms_err(wlc->hw->d11core, "dma_getnexttxp returned null!\n");
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goto out;
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}
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txh = (struct d11txh *) (p->data);
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mcl = le16_to_cpu(txh->MacTxControlLow);
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if (txs->phyerr) {
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if (brcm_msg_level & BRCM_DL_INFO) {
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brcms_err(wlc->hw->d11core, "phyerr 0x%x, rate 0x%x\n",
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txs->phyerr, txh->MainRates);
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brcms_c_print_txdesc(txh);
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}
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brcms_c_print_txstatus(txs);
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}
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if (txs->phyerr)
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brcms_err(wlc->hw->d11core, "phyerr 0x%x, rate 0x%x\n",
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txs->phyerr, txh->MainRates);
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if (txs->frameid != le16_to_cpu(txh->TxFrameID))
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if (txs->frameid != le16_to_cpu(txh->TxFrameID)) {
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brcms_err(wlc->hw->d11core, "frameid != txh->TxFrameID\n");
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goto out;
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}
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tx_info = IEEE80211_SKB_CB(p);
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h = (struct ieee80211_hdr *)((u8 *) (txh + 1) + D11_PHY_HDR_LEN);
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@ -923,11 +929,20 @@ brcms_c_dotxstatus(struct brcms_c_info *wlc, struct tx_status *txs)
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goto out;
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}
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/*
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* brcms_c_ampdu_dotxstatus() will trace tx descriptors for AMPDU
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* frames; this traces them for the rest.
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*/
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trace_brcms_txdesc(&wlc->hw->d11core->dev, txh, sizeof(*txh));
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supr_status = txs->status & TX_STATUS_SUPR_MASK;
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if (supr_status == TX_STATUS_SUPR_BADCH)
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if (supr_status == TX_STATUS_SUPR_BADCH) {
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unsigned xfts = le16_to_cpu(txh->XtraFrameTypes);
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brcms_dbg_tx(wlc->hw->d11core,
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"Pkt tx suppressed, possibly channel %d\n",
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"Pkt tx suppressed, dest chan %u, current %d\n",
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(xfts >> XFTS_CHANNEL_SHIFT) & 0xff,
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CHSPEC_CHANNEL(wlc->default_bss->chanspec));
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}
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tx_rts = le16_to_cpu(txh->MacTxControlLow) & TXC_SENDRTS;
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tx_frame_count =
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@ -1018,8 +1033,13 @@ brcms_c_dotxstatus(struct brcms_c_info *wlc, struct tx_status *txs)
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fatal = false;
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out:
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if (fatal && p)
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brcmu_pkt_buf_free_skb(p);
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if (fatal) {
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if (txh)
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trace_brcms_txdesc(&wlc->hw->d11core->dev, txh,
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sizeof(*txh));
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if (p)
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brcmu_pkt_buf_free_skb(p);
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}
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if (dma && queue < NFIFO) {
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u16 ac_queue = brcms_fifo_to_ac(queue);
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@ -1049,8 +1069,6 @@ brcms_b_txstatus(struct brcms_hardware *wlc_hw, bool bound, bool *fatal)
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*/
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uint max_tx_num = bound ? TXSBND : -1;
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brcms_dbg_tx(core, "wl%d\n", wlc_hw->unit);
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txs = &txstatus;
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core = wlc_hw->d11core;
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*fatal = false;
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@ -5662,45 +5680,6 @@ int brcms_c_module_unregister(struct brcms_pub *pub, const char *name,
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return -ENODATA;
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}
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void brcms_c_print_txstatus(struct tx_status *txs)
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{
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pr_debug("\ntxpkt (MPDU) Complete\n");
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pr_debug("FrameID: %04x TxStatus: %04x\n", txs->frameid, txs->status);
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pr_debug("[15:12] %d frame attempts\n",
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(txs->status & TX_STATUS_FRM_RTX_MASK) >>
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TX_STATUS_FRM_RTX_SHIFT);
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pr_debug(" [11:8] %d rts attempts\n",
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(txs->status & TX_STATUS_RTS_RTX_MASK) >>
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TX_STATUS_RTS_RTX_SHIFT);
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pr_debug(" [7] %d PM mode indicated\n",
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txs->status & TX_STATUS_PMINDCTD ? 1 : 0);
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pr_debug(" [6] %d intermediate status\n",
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txs->status & TX_STATUS_INTERMEDIATE ? 1 : 0);
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pr_debug(" [5] %d AMPDU\n",
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txs->status & TX_STATUS_AMPDU ? 1 : 0);
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pr_debug(" [4:2] %d Frame Suppressed Reason (%s)\n",
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(txs->status & TX_STATUS_SUPR_MASK) >> TX_STATUS_SUPR_SHIFT,
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(const char *[]) {
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"None",
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"PMQ Entry",
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"Flush request",
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"Previous frag failure",
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"Channel mismatch",
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"Lifetime Expiry",
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"Underflow"
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} [(txs->status & TX_STATUS_SUPR_MASK) >>
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TX_STATUS_SUPR_SHIFT]);
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pr_debug(" [1] %d acked\n",
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txs->status & TX_STATUS_ACK_RCV ? 1 : 0);
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pr_debug("LastTxTime: %04x Seq: %04x PHYTxStatus: %04x RxAckRSSI: %04x RxAckSQ: %04x\n",
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txs->lasttxtime, txs->sequence, txs->phyerr,
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(txs->ackphyrxsh & PRXS1_JSSI_MASK) >> PRXS1_JSSI_SHIFT,
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(txs->ackphyrxsh & PRXS1_SQ_MASK) >> PRXS1_SQ_SHIFT);
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}
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static bool brcms_c_chipmatch_pci(struct bcma_device *core)
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{
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struct pci_dev *pcidev = core->bus->host_pci;
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@ -5749,184 +5728,6 @@ bool brcms_c_chipmatch(struct bcma_device *core)
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}
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}
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#if defined(DEBUG)
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void brcms_c_print_txdesc(struct d11txh *txh)
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{
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u16 mtcl = le16_to_cpu(txh->MacTxControlLow);
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u16 mtch = le16_to_cpu(txh->MacTxControlHigh);
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u16 mfc = le16_to_cpu(txh->MacFrameControl);
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u16 tfest = le16_to_cpu(txh->TxFesTimeNormal);
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u16 ptcw = le16_to_cpu(txh->PhyTxControlWord);
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u16 ptcw_1 = le16_to_cpu(txh->PhyTxControlWord_1);
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u16 ptcw_1_Fbr = le16_to_cpu(txh->PhyTxControlWord_1_Fbr);
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u16 ptcw_1_Rts = le16_to_cpu(txh->PhyTxControlWord_1_Rts);
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u16 ptcw_1_FbrRts = le16_to_cpu(txh->PhyTxControlWord_1_FbrRts);
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u16 mainrates = le16_to_cpu(txh->MainRates);
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u16 xtraft = le16_to_cpu(txh->XtraFrameTypes);
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u8 *iv = txh->IV;
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u8 *ra = txh->TxFrameRA;
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u16 tfestfb = le16_to_cpu(txh->TxFesTimeFallback);
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u8 *rtspfb = txh->RTSPLCPFallback;
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u16 rtsdfb = le16_to_cpu(txh->RTSDurFallback);
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u8 *fragpfb = txh->FragPLCPFallback;
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u16 fragdfb = le16_to_cpu(txh->FragDurFallback);
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u16 mmodelen = le16_to_cpu(txh->MModeLen);
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u16 mmodefbrlen = le16_to_cpu(txh->MModeFbrLen);
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u16 tfid = le16_to_cpu(txh->TxFrameID);
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u16 txs = le16_to_cpu(txh->TxStatus);
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u16 mnmpdu = le16_to_cpu(txh->MaxNMpdus);
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u16 mabyte = le16_to_cpu(txh->MaxABytes_MRT);
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u16 mabyte_f = le16_to_cpu(txh->MaxABytes_FBR);
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u16 mmbyte = le16_to_cpu(txh->MinMBytes);
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u8 *rtsph = txh->RTSPhyHeader;
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struct ieee80211_rts rts = txh->rts_frame;
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/* add plcp header along with txh descriptor */
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brcmu_dbg_hex_dump(txh, sizeof(struct d11txh) + 48,
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"Raw TxDesc + plcp header:\n");
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pr_debug("TxCtlLow: %04x ", mtcl);
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pr_debug("TxCtlHigh: %04x ", mtch);
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pr_debug("FC: %04x ", mfc);
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pr_debug("FES Time: %04x\n", tfest);
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pr_debug("PhyCtl: %04x%s ", ptcw,
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(ptcw & PHY_TXC_SHORT_HDR) ? " short" : "");
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pr_debug("PhyCtl_1: %04x ", ptcw_1);
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pr_debug("PhyCtl_1_Fbr: %04x\n", ptcw_1_Fbr);
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pr_debug("PhyCtl_1_Rts: %04x ", ptcw_1_Rts);
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pr_debug("PhyCtl_1_Fbr_Rts: %04x\n", ptcw_1_FbrRts);
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pr_debug("MainRates: %04x ", mainrates);
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pr_debug("XtraFrameTypes: %04x ", xtraft);
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pr_debug("\n");
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print_hex_dump_bytes("SecIV:", DUMP_PREFIX_OFFSET, iv, sizeof(txh->IV));
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print_hex_dump_bytes("RA:", DUMP_PREFIX_OFFSET,
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ra, sizeof(txh->TxFrameRA));
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pr_debug("Fb FES Time: %04x ", tfestfb);
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print_hex_dump_bytes("Fb RTS PLCP:", DUMP_PREFIX_OFFSET,
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rtspfb, sizeof(txh->RTSPLCPFallback));
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pr_debug("RTS DUR: %04x ", rtsdfb);
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print_hex_dump_bytes("PLCP:", DUMP_PREFIX_OFFSET,
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fragpfb, sizeof(txh->FragPLCPFallback));
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pr_debug("DUR: %04x", fragdfb);
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pr_debug("\n");
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pr_debug("MModeLen: %04x ", mmodelen);
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pr_debug("MModeFbrLen: %04x\n", mmodefbrlen);
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pr_debug("FrameID: %04x\n", tfid);
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pr_debug("TxStatus: %04x\n", txs);
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pr_debug("MaxNumMpdu: %04x\n", mnmpdu);
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pr_debug("MaxAggbyte: %04x\n", mabyte);
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pr_debug("MaxAggbyte_fb: %04x\n", mabyte_f);
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pr_debug("MinByte: %04x\n", mmbyte);
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print_hex_dump_bytes("RTS PLCP:", DUMP_PREFIX_OFFSET,
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rtsph, sizeof(txh->RTSPhyHeader));
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print_hex_dump_bytes("RTS Frame:", DUMP_PREFIX_OFFSET,
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(u8 *)&rts, sizeof(txh->rts_frame));
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pr_debug("\n");
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}
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#endif /* defined(DEBUG) */
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#if defined(DEBUG)
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static int
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brcms_c_format_flags(const struct brcms_c_bit_desc *bd, u32 flags, char *buf,
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int len)
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{
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int i;
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char *p = buf;
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char hexstr[16];
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int slen = 0, nlen = 0;
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u32 bit;
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const char *name;
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if (len < 2 || !buf)
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return 0;
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buf[0] = '\0';
|
||||
|
||||
for (i = 0; flags != 0; i++) {
|
||||
bit = bd[i].bit;
|
||||
name = bd[i].name;
|
||||
if (bit == 0 && flags != 0) {
|
||||
/* print any unnamed bits */
|
||||
snprintf(hexstr, 16, "0x%X", flags);
|
||||
name = hexstr;
|
||||
flags = 0; /* exit loop */
|
||||
} else if ((flags & bit) == 0)
|
||||
continue;
|
||||
flags &= ~bit;
|
||||
nlen = strlen(name);
|
||||
slen += nlen;
|
||||
/* count btwn flag space */
|
||||
if (flags != 0)
|
||||
slen += 1;
|
||||
/* need NULL char as well */
|
||||
if (len <= slen)
|
||||
break;
|
||||
/* copy NULL char but don't count it */
|
||||
strncpy(p, name, nlen + 1);
|
||||
p += nlen;
|
||||
/* copy btwn flag space and NULL char */
|
||||
if (flags != 0)
|
||||
p += snprintf(p, 2, " ");
|
||||
len -= slen;
|
||||
}
|
||||
|
||||
/* indicate the str was too short */
|
||||
if (flags != 0) {
|
||||
if (len < 2)
|
||||
p -= 2 - len; /* overwrite last char */
|
||||
p += snprintf(p, 2, ">");
|
||||
}
|
||||
|
||||
return (int)(p - buf);
|
||||
}
|
||||
#endif /* defined(DEBUG) */
|
||||
|
||||
#if defined(DEBUG)
|
||||
void brcms_c_print_rxh(struct d11rxhdr *rxh)
|
||||
{
|
||||
u16 len = rxh->RxFrameSize;
|
||||
u16 phystatus_0 = rxh->PhyRxStatus_0;
|
||||
u16 phystatus_1 = rxh->PhyRxStatus_1;
|
||||
u16 phystatus_2 = rxh->PhyRxStatus_2;
|
||||
u16 phystatus_3 = rxh->PhyRxStatus_3;
|
||||
u16 macstatus1 = rxh->RxStatus1;
|
||||
u16 macstatus2 = rxh->RxStatus2;
|
||||
char flagstr[64];
|
||||
char lenbuf[20];
|
||||
static const struct brcms_c_bit_desc macstat_flags[] = {
|
||||
{RXS_FCSERR, "FCSErr"},
|
||||
{RXS_RESPFRAMETX, "Reply"},
|
||||
{RXS_PBPRES, "PADDING"},
|
||||
{RXS_DECATMPT, "DeCr"},
|
||||
{RXS_DECERR, "DeCrErr"},
|
||||
{RXS_BCNSENT, "Bcn"},
|
||||
{0, NULL}
|
||||
};
|
||||
|
||||
brcmu_dbg_hex_dump(rxh, sizeof(struct d11rxhdr), "Raw RxDesc:\n");
|
||||
|
||||
brcms_c_format_flags(macstat_flags, macstatus1, flagstr, 64);
|
||||
|
||||
snprintf(lenbuf, sizeof(lenbuf), "0x%x", len);
|
||||
|
||||
pr_debug("RxFrameSize: %6s (%d)%s\n", lenbuf, len,
|
||||
(rxh->PhyRxStatus_0 & PRXS0_SHORTH) ? " short preamble" : "");
|
||||
pr_debug("RxPHYStatus: %04x %04x %04x %04x\n",
|
||||
phystatus_0, phystatus_1, phystatus_2, phystatus_3);
|
||||
pr_debug("RxMACStatus: %x %s\n", macstatus1, flagstr);
|
||||
pr_debug("RXMACaggtype: %x\n",
|
||||
(macstatus2 & RXS_AGGTYPE_MASK));
|
||||
pr_debug("RxTSFTime: %04x\n", rxh->RxTSFTime);
|
||||
}
|
||||
#endif /* defined(DEBUG) */
|
||||
|
||||
u16 brcms_b_rate_shm_offset(struct brcms_hardware *wlc_hw, u8 rate)
|
||||
{
|
||||
u16 table_ptr;
|
||||
|
|
|
|||
|
|
@ -612,18 +612,9 @@ struct brcms_bss_cfg {
|
|||
|
||||
extern int brcms_c_txfifo(struct brcms_c_info *wlc, uint fifo,
|
||||
struct sk_buff *p);
|
||||
extern void brcms_c_print_txstatus(struct tx_status *txs);
|
||||
extern int brcms_b_xmtfifo_sz_get(struct brcms_hardware *wlc_hw, uint fifo,
|
||||
uint *blocks);
|
||||
|
||||
#if defined(DEBUG)
|
||||
extern void brcms_c_print_txdesc(struct d11txh *txh);
|
||||
#else
|
||||
static inline void brcms_c_print_txdesc(struct d11txh *txh)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
extern int brcms_c_set_gmode(struct brcms_c_info *wlc, u8 gmode, bool config);
|
||||
extern void brcms_c_mac_promisc(struct brcms_c_info *wlc, uint filter_flags);
|
||||
extern u16 brcms_c_calc_lsig_len(struct brcms_c_info *wlc, u32 ratespec,
|
||||
|
|
|
|||
Reference in New Issue