package/kernel/mac80211/patches/rt2x00/701-rt2800-move-usb-specific-txdone-txstatus-routines-to.patch

   1 From 0381bfbc400ce4c3000b0b31c577ad9e8071e4f6 Mon Sep 17 00:00:00 2001
   2 From: Stanislaw Gruszka <sgruszka@redhat.com>
   3 Date: Fri, 18 May 2018 12:25:08 +0200
   4 Subject: [PATCH 1/5] rt2800: move usb specific txdone/txstatus routines to
   5  rt2800lib
   6
   7 In order to reuse usb txdone/txstatus routines for mmio, move them
   8 to common rt2800lib.c file.
   9
  10 Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
  11 ---
  12  .../net/wireless/ralink/rt2x00/rt2800lib.c    | 138 +++++++++++++++++
  13  .../net/wireless/ralink/rt2x00/rt2800lib.h    |   3 +
  14  .../net/wireless/ralink/rt2x00/rt2800usb.c    | 143 +-----------------
  15  3 files changed, 145 insertions(+), 139 deletions(-)
  16
  17 diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
  18 index a567bc273ffc..9f2835729016 100644
  19 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
  20 +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
  21 @@ -957,6 +957,47 @@ static void rt2800_rate_from_status(struct skb_frame_desc *skbdesc,
  22         skbdesc->tx_rate_flags = flags;
  23  }
  24
  25 +static bool rt2800_txdone_entry_check(struct queue_entry *entry, u32 reg)
  26 +{
  27 +       __le32 *txwi;
  28 +       u32 word;
  29 +       int wcid, ack, pid;
  30 +       int tx_wcid, tx_ack, tx_pid, is_agg;
  31 +
  32 +       /*
  33 +        * This frames has returned with an IO error,
  34 +        * so the status report is not intended for this
  35 +        * frame.
  36 +        */
  37 +       if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
  38 +               return false;
  39 +
  40 +       wcid    = rt2x00_get_field32(reg, TX_STA_FIFO_WCID);
  41 +       ack     = rt2x00_get_field32(reg, TX_STA_FIFO_TX_ACK_REQUIRED);
  42 +       pid     = rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE);
  43 +       is_agg  = rt2x00_get_field32(reg, TX_STA_FIFO_TX_AGGRE);
  44 +
  45 +       /*
  46 +        * Validate if this TX status report is intended for
  47 +        * this entry by comparing the WCID/ACK/PID fields.
  48 +        */
  49 +       txwi = rt2800_drv_get_txwi(entry);
  50 +
  51 +       word = rt2x00_desc_read(txwi, 1);
  52 +       tx_wcid = rt2x00_get_field32(word, TXWI_W1_WIRELESS_CLI_ID);
  53 +       tx_ack  = rt2x00_get_field32(word, TXWI_W1_ACK);
  54 +       tx_pid  = rt2x00_get_field32(word, TXWI_W1_PACKETID);
  55 +
  56 +       if (wcid != tx_wcid || ack != tx_ack || (!is_agg && pid != tx_pid)) {
  57 +               rt2x00_dbg(entry->queue->rt2x00dev,
  58 +                          "TX status report missed for queue %d entry %d\n",
  59 +                          entry->queue->qid, entry->entry_idx);
  60 +               return false;
  61 +       }
  62 +
  63 +       return true;
  64 +}
  65 +
  66  void rt2800_txdone_entry(struct queue_entry *entry, u32 status, __le32 *txwi,
  67                          bool match)
  68  {
  69 @@ -1059,6 +1100,103 @@ void rt2800_txdone_entry(struct queue_entry *entry, u32 status, __le32 *txwi,
  70  }
  71  EXPORT_SYMBOL_GPL(rt2800_txdone_entry);
  72
  73 +void rt2800_txdone(struct rt2x00_dev *rt2x00dev)
  74 +{
  75 +       struct data_queue *queue;
  76 +       struct queue_entry *entry;
  77 +       u32 reg;
  78 +       u8 qid;
  79 +       bool match;
  80 +
  81 +       while (kfifo_get(&rt2x00dev->txstatus_fifo, &reg)) {
  82 +               /*
  83 +                * TX_STA_FIFO_PID_QUEUE is a 2-bit field, thus qid is
  84 +                * guaranteed to be one of the TX QIDs .
  85 +                */
  86 +               qid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_QUEUE);
  87 +               queue = rt2x00queue_get_tx_queue(rt2x00dev, qid);
  88 +
  89 +               if (unlikely(rt2x00queue_empty(queue))) {
  90 +                       rt2x00_dbg(rt2x00dev, "Got TX status for an empty queue %u, dropping\n",
  91 +                                  qid);
  92 +                       break;
  93 +               }
  94 +
  95 +               entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
  96 +
  97 +               if (unlikely(test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
  98 +                            !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))) {
  99 +                       rt2x00_warn(rt2x00dev, "Data pending for entry %u in queue %u\n",
 100 +                                   entry->entry_idx, qid);
 101 +                       break;
 102 +               }
 103 +
 104 +               match = rt2800_txdone_entry_check(entry, reg);
 105 +               rt2800_txdone_entry(entry, reg, rt2800_drv_get_txwi(entry), match);
 106 +       }
 107 +}
 108 +EXPORT_SYMBOL_GPL(rt2800_txdone);
 109 +
 110 +static inline bool rt2800_entry_txstatus_timeout(struct queue_entry *entry)
 111 +{
 112 +       bool tout;
 113 +
 114 +       if (!test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
 115 +               return false;
 116 +
 117 +       tout = time_after(jiffies, entry->last_action + msecs_to_jiffies(500));
 118 +       if (unlikely(tout))
 119 +               rt2x00_dbg(entry->queue->rt2x00dev,
 120 +                          "TX status timeout for entry %d in queue %d\n",
 121 +                          entry->entry_idx, entry->queue->qid);
 122 +       return tout;
 123 +
 124 +}
 125 +
 126 +bool rt2800_txstatus_timeout(struct rt2x00_dev *rt2x00dev)
 127 +{
 128 +       struct data_queue *queue;
 129 +       struct queue_entry *entry;
 130 +
 131 +       tx_queue_for_each(rt2x00dev, queue) {
 132 +               entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
 133 +               if (rt2800_entry_txstatus_timeout(entry))
 134 +                       return true;
 135 +       }
 136 +       return false;
 137 +}
 138 +EXPORT_SYMBOL_GPL(rt2800_txstatus_timeout);
 139 +
 140 +void rt2800_txdone_nostatus(struct rt2x00_dev *rt2x00dev)
 141 +{
 142 +       struct data_queue *queue;
 143 +       struct queue_entry *entry;
 144 +
 145 +       /*
 146 +        * Process any trailing TX status reports for IO failures,
 147 +        * we loop until we find the first non-IO error entry. This
 148 +        * can either be a frame which is free, is being uploaded,
 149 +        * or has completed the upload but didn't have an entry
 150 +        * in the TX_STAT_FIFO register yet.
 151 +        */
 152 +       tx_queue_for_each(rt2x00dev, queue) {
 153 +               while (!rt2x00queue_empty(queue)) {
 154 +                       entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
 155 +
 156 +                       if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
 157 +                           !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
 158 +                               break;
 159 +
 160 +                       if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags) ||
 161 +                           rt2800_entry_txstatus_timeout(entry))
 162 +                               rt2x00lib_txdone_noinfo(entry, TXDONE_FAILURE);
 163 +                       else
 164 +                               break;
 165 +               }
 166 +       }
 167 +}
 168 +EXPORT_SYMBOL_GPL(rt2800_txdone_nostatus);
 169 +
 170  static unsigned int rt2800_hw_beacon_base(struct rt2x00_dev *rt2x00dev,
 171                                           unsigned int index)
 172  {
 173 diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
 174 index 51d9c2a932cc..0dff2c7b3010 100644
 175 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
 176 +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
 177 @@ -195,6 +195,9 @@ void rt2800_process_rxwi(struct queue_entry *entry, struct rxdone_entry_desc *tx
 178
 179  void rt2800_txdone_entry(struct queue_entry *entry, u32 status, __le32 *txwi,
 180                          bool match);
 181 +void rt2800_txdone(struct rt2x00_dev *rt2x00dev);
 182 +void rt2800_txdone_nostatus(struct rt2x00_dev *rt2x00dev);
 183 +bool rt2800_txstatus_timeout(struct rt2x00_dev *rt2x00dev);
 184
 185  void rt2800_write_beacon(struct queue_entry *entry, struct txentry_desc *txdesc);
 186  void rt2800_clear_beacon(struct queue_entry *entry);
 187 diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800usb.c b/drivers/net/wireless/ralink/rt2x00/rt2800usb.c
 188 index 98a7313fea4a..19eabf16147b 100644
 189 --- a/drivers/net/wireless/ralink/rt2x00/rt2800usb.c
 190 +++ b/drivers/net/wireless/ralink/rt2x00/rt2800usb.c
 191 @@ -116,35 +116,6 @@ static bool rt2800usb_txstatus_pending(struct rt2x00_dev *rt2x00dev)
 192         return false;
 193  }
 194
 195 -static inline bool rt2800usb_entry_txstatus_timeout(struct queue_entry *entry)
 196 -{
 197 -       bool tout;
 198 -
 199 -       if (!test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
 200 -               return false;
 201 -
 202 -       tout = time_after(jiffies, entry->last_action + msecs_to_jiffies(500));
 203 -       if (unlikely(tout))
 204 -               rt2x00_dbg(entry->queue->rt2x00dev,
 205 -                          "TX status timeout for entry %d in queue %d\n",
 206 -                          entry->entry_idx, entry->queue->qid);
 207 -       return tout;
 208 -
 209 -}
 210 -
 211 -static bool rt2800usb_txstatus_timeout(struct rt2x00_dev *rt2x00dev)
 212 -{
 213 -       struct data_queue *queue;
 214 -       struct queue_entry *entry;
 215 -
 216 -       tx_queue_for_each(rt2x00dev, queue) {
 217 -               entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
 218 -               if (rt2800usb_entry_txstatus_timeout(entry))
 219 -                       return true;
 220 -       }
 221 -       return false;
 222 -}
 223 -
 224  #define TXSTATUS_READ_INTERVAL 1000000
 225
 226  static bool rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev,
 227 @@ -171,7 +142,7 @@ static bool rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev,
 228         }
 229
 230         /* Check if there is any entry that timedout waiting on TX status */
 231 -       if (rt2800usb_txstatus_timeout(rt2x00dev))
 232 +       if (rt2800_txstatus_timeout(rt2x00dev))
 233                 queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);
 234
 235         if (rt2800usb_txstatus_pending(rt2x00dev)) {
 236 @@ -501,123 +472,17 @@ static int rt2800usb_get_tx_data_len(struct queue_entry *entry)
 237  /*
 238   * TX control handlers
 239   */
 240 -static bool rt2800usb_txdone_entry_check(struct queue_entry *entry, u32 reg)
 241 -{
 242 -       __le32 *txwi;
 243 -       u32 word;
 244 -       int wcid, ack, pid;
 245 -       int tx_wcid, tx_ack, tx_pid, is_agg;
 246 -
 247 -       /*
 248 -        * This frames has returned with an IO error,
 249 -        * so the status report is not intended for this
 250 -        * frame.
 251 -        */
 252 -       if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
 253 -               return false;
 254 -
 255 -       wcid    = rt2x00_get_field32(reg, TX_STA_FIFO_WCID);
 256 -       ack     = rt2x00_get_field32(reg, TX_STA_FIFO_TX_ACK_REQUIRED);
 257 -       pid     = rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE);
 258 -       is_agg  = rt2x00_get_field32(reg, TX_STA_FIFO_TX_AGGRE);
 259 -
 260 -       /*
 261 -        * Validate if this TX status report is intended for
 262 -        * this entry by comparing the WCID/ACK/PID fields.
 263 -        */
 264 -       txwi = rt2800usb_get_txwi(entry);
 265 -
 266 -       word = rt2x00_desc_read(txwi, 1);
 267 -       tx_wcid = rt2x00_get_field32(word, TXWI_W1_WIRELESS_CLI_ID);
 268 -       tx_ack  = rt2x00_get_field32(word, TXWI_W1_ACK);
 269 -       tx_pid  = rt2x00_get_field32(word, TXWI_W1_PACKETID);
 270 -
 271 -       if (wcid != tx_wcid || ack != tx_ack || (!is_agg && pid != tx_pid)) {
 272 -               rt2x00_dbg(entry->queue->rt2x00dev,
 273 -                          "TX status report missed for queue %d entry %d\n",
 274 -                          entry->queue->qid, entry->entry_idx);
 275 -               return false;
 276 -       }
 277 -
 278 -       return true;
 279 -}
 280 -
 281 -static void rt2800usb_txdone(struct rt2x00_dev *rt2x00dev)
 282 -{
 283 -       struct data_queue *queue;
 284 -       struct queue_entry *entry;
 285 -       u32 reg;
 286 -       u8 qid;
 287 -       bool match;
 288 -
 289 -       while (kfifo_get(&rt2x00dev->txstatus_fifo, &reg)) {
 290 -               /*
 291 -                * TX_STA_FIFO_PID_QUEUE is a 2-bit field, thus qid is
 292 -                * guaranteed to be one of the TX QIDs .
 293 -                */
 294 -               qid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_QUEUE);
 295 -               queue = rt2x00queue_get_tx_queue(rt2x00dev, qid);
 296 -
 297 -               if (unlikely(rt2x00queue_empty(queue))) {
 298 -                       rt2x00_dbg(rt2x00dev, "Got TX status for an empty queue %u, dropping\n",
 299 -                                  qid);
 300 -                       break;
 301 -               }
 302 -
 303 -               entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
 304 -
 305 -               if (unlikely(test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
 306 -                            !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))) {
 307 -                       rt2x00_warn(rt2x00dev, "Data pending for entry %u in queue %u\n",
 308 -                                   entry->entry_idx, qid);
 309 -                       break;
 310 -               }
 311 -
 312 -               match = rt2800usb_txdone_entry_check(entry, reg);
 313 -               rt2800_txdone_entry(entry, reg, rt2800usb_get_txwi(entry), match);
 314 -       }
 315 -}
 316 -
 317 -static void rt2800usb_txdone_nostatus(struct rt2x00_dev *rt2x00dev)
 318 -{
 319 -       struct data_queue *queue;
 320 -       struct queue_entry *entry;
 321 -
 322 -       /*
 323 -        * Process any trailing TX status reports for IO failures,
 324 -        * we loop until we find the first non-IO error entry. This
 325 -        * can either be a frame which is free, is being uploaded,
 326 -        * or has completed the upload but didn't have an entry
 327 -        * in the TX_STAT_FIFO register yet.
 328 -        */
 329 -       tx_queue_for_each(rt2x00dev, queue) {
 330 -               while (!rt2x00queue_empty(queue)) {
 331 -                       entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
 332 -
 333 -                       if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
 334 -                           !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
 335 -                               break;
 336 -
 337 -                       if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags) ||
 338 -                           rt2800usb_entry_txstatus_timeout(entry))
 339 -                               rt2x00lib_txdone_noinfo(entry, TXDONE_FAILURE);
 340 -                       else
 341 -                               break;
 342 -               }
 343 -       }
 344 -}
 345 -
 346  static void rt2800usb_work_txdone(struct work_struct *work)
 347  {
 348         struct rt2x00_dev *rt2x00dev =
 349             container_of(work, struct rt2x00_dev, txdone_work);
 350
 351         while (!kfifo_is_empty(&rt2x00dev->txstatus_fifo) ||
 352 -              rt2800usb_txstatus_timeout(rt2x00dev)) {
 353 +              rt2800_txstatus_timeout(rt2x00dev)) {
 354
 355 -               rt2800usb_txdone(rt2x00dev);
 356 +               rt2800_txdone(rt2x00dev);
 357
 358 -               rt2800usb_txdone_nostatus(rt2x00dev);
 359 +               rt2800_txdone_nostatus(rt2x00dev);
 360
 361                 /*
 362                  * The hw may delay sending the packet after DMA complete
 363 --
 364 2.18.0
 365