package/kernel/mac80211/patches/314-v4.16-0007-brcmfmac-Replace-function-index-with-function-pointe.patch

   1 From 00eb62cfc5f806b003fe5d54c8b5fe9a9665482f Mon Sep 17 00:00:00 2001
   2 From: Ian Molton <ian@mnementh.co.uk>
   3 Date: Tue, 19 Dec 2017 13:47:13 +0100
   4 Subject: [PATCH] brcmfmac: Replace function index with function pointer
   5
   6 In preparation for removing the function array, remove all code that
   7 refers to function by index and replace with pointers to the function
   8 itself.
   9
  10 Signed-off-by: Ian Molton <ian@mnementh.co.uk>
  11 Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  12 [arend: replace BUG() with WARN() macro]
  13 Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
  14 Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
  15 ---
  16  .../wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c  | 85 ++++++++++++----------
  17  .../wireless/broadcom/brcm80211/brcmfmac/sdio.c    | 15 ++--
  18  .../wireless/broadcom/brcm80211/brcmfmac/sdio.h    |  6 +-
  19  3 files changed, 56 insertions(+), 50 deletions(-)
  20
  21 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
  22 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
  23 @@ -291,8 +291,9 @@ out:
  24                 *ret = retval;
  25  }
  26
  27 -static int brcmf_sdiod_buff_read(struct brcmf_sdio_dev *sdiodev, uint fn,
  28 -                                u32 addr, struct sk_buff *pkt)
  29 +static int brcmf_sdiod_buff_read(struct brcmf_sdio_dev *sdiodev,
  30 +                                struct sdio_func *func, u32 addr,
  31 +                                struct sk_buff *pkt)
  32  {
  33         unsigned int req_sz;
  34         int err;
  35 @@ -301,13 +302,19 @@ static int brcmf_sdiod_buff_read(struct
  36         req_sz = pkt->len + 3;
  37         req_sz &= (uint)~3;
  38
  39 -       if (fn == 1)
  40 -               err = sdio_memcpy_fromio(sdiodev->func[fn],
  41 -                                        ((u8 *)(pkt->data)), addr, req_sz);
  42 -       else
  43 -               /* function 2 read is FIFO operation */
  44 -               err = sdio_readsb(sdiodev->func[fn],
  45 -                                 ((u8 *)(pkt->data)), addr, req_sz);
  46 +       switch (func->num) {
  47 +       case 1:
  48 +               err = sdio_memcpy_fromio(func, ((u8 *)(pkt->data)), addr,
  49 +                                        req_sz);
  50 +               break;
  51 +       case 2:
  52 +               err = sdio_readsb(func, ((u8 *)(pkt->data)), addr, req_sz);
  53 +               break;
  54 +       default:
  55 +               /* bail out as things are really fishy here */
  56 +               WARN(1, "invalid sdio function number: %d\n", func->num);
  57 +               err = -ENOMEDIUM;
  58 +       };
  59
  60         if (err == -ENOMEDIUM)
  61                 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
  62 @@ -315,8 +322,9 @@ static int brcmf_sdiod_buff_read(struct
  63         return err;
  64  }
  65
  66 -static int brcmf_sdiod_buff_write(struct brcmf_sdio_dev *sdiodev, uint fn,
  67 -                                 u32 addr, struct sk_buff *pkt)
  68 +static int brcmf_sdiod_buff_write(struct brcmf_sdio_dev *sdiodev,
  69 +                                 struct sdio_func *func, u32 addr,
  70 +                                 struct sk_buff *pkt)
  71  {
  72         unsigned int req_sz;
  73         int err;
  74 @@ -325,8 +333,7 @@ static int brcmf_sdiod_buff_write(struct
  75         req_sz = pkt->len + 3;
  76         req_sz &= (uint)~3;
  77
  78 -       err = sdio_memcpy_toio(sdiodev->func[fn], addr,
  79 -                              ((u8 *)(pkt->data)), req_sz);
  80 +       err = sdio_memcpy_toio(func, addr, ((u8 *)(pkt->data)), req_sz);
  81
  82         if (err == -ENOMEDIUM)
  83                 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
  84 @@ -337,7 +344,7 @@ static int brcmf_sdiod_buff_write(struct
  85  /**
  86   * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
  87   * @sdiodev: brcmfmac sdio device
  88 - * @fn: SDIO function number
  89 + * @func: SDIO function
  90   * @write: direction flag
  91   * @addr: dongle memory address as source/destination
  92   * @pkt: skb pointer
  93 @@ -346,7 +353,8 @@ static int brcmf_sdiod_buff_write(struct
  94   * stack for block data access. It assumes that the skb passed down by the
  95   * caller has already been padded and aligned.
  96   */
  97 -static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
  98 +static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev,
  99 +                                struct sdio_func *func,
 100                                  bool write, u32 addr,
 101                                  struct sk_buff_head *pktlist)
 102  {
 103 @@ -372,7 +380,7 @@ static int brcmf_sdiod_sglist_rw(struct
 104                 req_sz = 0;
 105                 skb_queue_walk(pktlist, pkt_next)
 106                         req_sz += pkt_next->len;
 107 -               req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize);
 108 +               req_sz = ALIGN(req_sz, func->cur_blksize);
 109                 while (req_sz > PAGE_SIZE) {
 110                         pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
 111                         if (pkt_next == NULL) {
 112 @@ -391,7 +399,7 @@ static int brcmf_sdiod_sglist_rw(struct
 113                 target_list = &local_list;
 114         }
 115
 116 -       func_blk_sz = sdiodev->func[fn]->cur_blksize;
 117 +       func_blk_sz = func->cur_blksize;
 118         max_req_sz = sdiodev->max_request_size;
 119         max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
 120                             target_list->qlen);
 121 @@ -408,10 +416,10 @@ static int brcmf_sdiod_sglist_rw(struct
 122         mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
 123         mmc_cmd.opcode = SD_IO_RW_EXTENDED;
 124         mmc_cmd.arg = write ? 1<<31 : 0;        /* write flag  */
 125 -       mmc_cmd.arg |= (fn & 0x7) << 28;        /* SDIO func num */
 126 -       mmc_cmd.arg |= 1<<27;                   /* block mode */
 127 +       mmc_cmd.arg |= (func->num & 0x7) << 28; /* SDIO func num */
 128 +       mmc_cmd.arg |= 1 << 27;                 /* block mode */
 129         /* for function 1 the addr will be incremented */
 130 -       mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0;
 131 +       mmc_cmd.arg |= (func->num == 1) ? 1 << 26 : 0;
 132         mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
 133         mmc_req.cmd = &mmc_cmd;
 134         mmc_req.data = &mmc_dat;
 135 @@ -457,11 +465,11 @@ static int brcmf_sdiod_sglist_rw(struct
 136                 mmc_cmd.arg |= (addr & 0x1FFFF) << 9;   /* address */
 137                 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF;  /* block count */
 138                 /* incrementing addr for function 1 */
 139 -               if (fn == 1)
 140 +               if (func->num == 1)
 141                         addr += req_sz;
 142
 143 -               mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
 144 -               mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
 145 +               mmc_set_data_timeout(&mmc_dat, func->card);
 146 +               mmc_wait_for_req(func->card->host, &mmc_req);
 147
 148                 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
 149                 if (ret == -ENOMEDIUM) {
 150 @@ -541,7 +549,7 @@ int brcmf_sdiod_recv_pkt(struct brcmf_sd
 151         addr &= SBSDIO_SB_OFT_ADDR_MASK;
 152         addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
 153
 154 -       err = brcmf_sdiod_buff_read(sdiodev, SDIO_FUNC_2, addr, pkt);
 155 +       err = brcmf_sdiod_buff_read(sdiodev, sdiodev->func[2], addr, pkt);
 156
 157  done:
 158         return err;
 159 @@ -566,13 +574,13 @@ int brcmf_sdiod_recv_chain(struct brcmf_
 160         addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
 161
 162         if (pktq->qlen == 1)
 163 -               err = brcmf_sdiod_buff_read(sdiodev, SDIO_FUNC_2, addr,
 164 +               err = brcmf_sdiod_buff_read(sdiodev, sdiodev->func[2], addr,
 165                                             pktq->next);
 166         else if (!sdiodev->sg_support) {
 167                 glom_skb = brcmu_pkt_buf_get_skb(totlen);
 168                 if (!glom_skb)
 169                         return -ENOMEM;
 170 -               err = brcmf_sdiod_buff_read(sdiodev, SDIO_FUNC_2, addr,
 171 +               err = brcmf_sdiod_buff_read(sdiodev, sdiodev->func[2], addr,
 172                                             glom_skb);
 173                 if (err)
 174                         goto done;
 175 @@ -582,8 +590,8 @@ int brcmf_sdiod_recv_chain(struct brcmf_
 176                         skb_pull(glom_skb, skb->len);
 177                 }
 178         } else
 179 -               err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr,
 180 -                                           pktq);
 181 +               err = brcmf_sdiod_sglist_rw(sdiodev, sdiodev->func[2], false,
 182 +                                           addr, pktq);
 183
 184  done:
 185         brcmu_pkt_buf_free_skb(glom_skb);
 186 @@ -614,7 +622,8 @@ int brcmf_sdiod_send_buf(struct brcmf_sd
 187         addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
 188
 189         if (!err)
 190 -               err = brcmf_sdiod_buff_write(sdiodev, SDIO_FUNC_2, addr, mypkt);
 191 +               err = brcmf_sdiod_buff_write(sdiodev, sdiodev->func[2], addr,
 192 +                                            mypkt);
 193
 194         brcmu_pkt_buf_free_skb(mypkt);
 195
 196 @@ -639,14 +648,14 @@ int brcmf_sdiod_send_pkt(struct brcmf_sd
 197
 198         if (pktq->qlen == 1 || !sdiodev->sg_support) {
 199                 skb_queue_walk(pktq, skb) {
 200 -                       err = brcmf_sdiod_buff_write(sdiodev, SDIO_FUNC_2,
 201 +                       err = brcmf_sdiod_buff_write(sdiodev, sdiodev->func[2],
 202                                                      addr, skb);
 203                         if (err)
 204                                 break;
 205                 }
 206         } else {
 207 -               err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr,
 208 -                                           pktq);
 209 +               err = brcmf_sdiod_sglist_rw(sdiodev, sdiodev->func[2], true,
 210 +                                           addr, pktq);
 211         }
 212
 213         return err;
 214 @@ -696,10 +705,10 @@ brcmf_sdiod_ramrw(struct brcmf_sdio_dev
 215
 216                 if (write) {
 217                         memcpy(pkt->data, data, dsize);
 218 -                       err = brcmf_sdiod_buff_write(sdiodev, SDIO_FUNC_1,
 219 +                       err = brcmf_sdiod_buff_write(sdiodev, sdiodev->func[1],
 220                                                      sdaddr, pkt);
 221                 } else {
 222 -                       err = brcmf_sdiod_buff_read(sdiodev, SDIO_FUNC_1,
 223 +                       err = brcmf_sdiod_buff_read(sdiodev, sdiodev->func[1],
 224                                                     sdaddr, pkt);
 225                 }
 226
 227 @@ -728,12 +737,12 @@ brcmf_sdiod_ramrw(struct brcmf_sdio_dev
 228         return err;
 229  }
 230
 231 -int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, u8 fn)
 232 +int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, struct sdio_func *func)
 233  {
 234         brcmf_dbg(SDIO, "Enter\n");
 235
 236         /* Issue abort cmd52 command through F0 */
 237 -       brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_ABORT, fn, NULL);
 238 +       brcmf_sdiod_func0_wb(sdiodev, SDIO_CCCR_ABORT, func->num, NULL);
 239
 240         brcmf_dbg(SDIO, "Exit\n");
 241         return 0;
 242 @@ -1105,7 +1114,7 @@ static int brcmf_ops_sdio_suspend(struct
 243
 244         func = container_of(dev, struct sdio_func, dev);
 245         brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
 246 -       if (func->num != SDIO_FUNC_1)
 247 +       if (func->num != 1)
 248                 return 0;
 249
 250
 251 @@ -1134,7 +1143,7 @@ static int brcmf_ops_sdio_resume(struct
 252         struct sdio_func *func = container_of(dev, struct sdio_func, dev);
 253
 254         brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
 255 -       if (func->num != SDIO_FUNC_2)
 256 +       if (func->num != 2)
 257                 return 0;
 258
 259         brcmf_sdiod_freezer_off(sdiodev);
 260 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
 261 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
 262 @@ -1157,7 +1157,7 @@ static void brcmf_sdio_rxfail(struct brc
 263                   rtx ? ", send NAK" : "");
 264
 265         if (abort)
 266 -               brcmf_sdiod_abort(bus->sdiodev, SDIO_FUNC_2);
 267 +               brcmf_sdiod_abort(bus->sdiodev, bus->sdiodev->func[2]);
 268
 269         brcmf_sdiod_writeb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL, SFC_RF_TERM,
 270                            &err);
 271 @@ -1209,7 +1209,7 @@ static void brcmf_sdio_txfail(struct brc
 272         brcmf_err("sdio error, abort command and terminate frame\n");
 273         bus->sdcnt.tx_sderrs++;
 274
 275 -       brcmf_sdiod_abort(sdiodev, SDIO_FUNC_2);
 276 +       brcmf_sdiod_abort(sdiodev, sdiodev->func[2]);
 277         brcmf_sdiod_writeb(sdiodev, SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM, NULL);
 278         bus->sdcnt.f1regdata++;
 279
 280 @@ -2072,7 +2072,7 @@ static int brcmf_sdio_txpkt_prep_sg(stru
 281         int ntail, ret;
 282
 283         sdiodev = bus->sdiodev;
 284 -       blksize = sdiodev->func[SDIO_FUNC_2]->cur_blksize;
 285 +       blksize = sdiodev->func[2]->cur_blksize;
 286         /* sg entry alignment should be a divisor of block size */
 287         WARN_ON(blksize % bus->sgentry_align);
 288
 289 @@ -2441,7 +2441,7 @@ static void brcmf_sdio_bus_stop(struct d
 290
 291                 /* Turn off the bus (F2), free any pending packets */
 292                 brcmf_dbg(INTR, "disable SDIO interrupts\n");
 293 -               sdio_disable_func(sdiodev->func[SDIO_FUNC_2]);
 294 +               sdio_disable_func(sdiodev->func[2]);
 295
 296                 /* Clear any pending interrupts now that F2 is disabled */
 297                 brcmf_sdiod_writel(sdiodev, core->base + SD_REG(intstatus),
 298 @@ -4066,8 +4066,7 @@ static void brcmf_sdio_firmware_callback
 299         brcmf_sdiod_writel(sdiod, core->base + SD_REG(tosbmailboxdata),
 300                            SDPCM_PROT_VERSION << SMB_DATA_VERSION_SHIFT, NULL);
 301
 302 -       err = sdio_enable_func(sdiodev->func[SDIO_FUNC_2]);
 303 -
 304 +       err = sdio_enable_func(sdiodev->func[2]);
 305
 306         brcmf_dbg(INFO, "enable F2: err=%d\n", err);
 307
 308 @@ -4082,7 +4081,7 @@ static void brcmf_sdio_firmware_callback
 309                 brcmf_sdiod_writeb(sdiodev, SBSDIO_WATERMARK, 8, &err);
 310         } else {
 311                 /* Disable F2 again */
 312 -               sdio_disable_func(sdiodev->func[SDIO_FUNC_2]);
 313 +               sdio_disable_func(sdiodev->func[2]);
 314                 goto release;
 315         }
 316
 317 @@ -4219,7 +4218,7 @@ struct brcmf_sdio *brcmf_sdio_probe(stru
 318         sdio_claim_host(bus->sdiodev->func[1]);
 319
 320         /* Disable F2 to clear any intermediate frame state on the dongle */
 321 -       sdio_disable_func(bus->sdiodev->func[SDIO_FUNC_2]);
 322 +       sdio_disable_func(bus->sdiodev->func[2]);
 323
 324         bus->rxflow = false;
 325
 326 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h
 327 +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h
 328 @@ -45,9 +45,6 @@
 329  #define REG_F0_REG_MASK                0x7FF
 330  #define REG_F1_MISC_MASK       0x1FFFF
 331
 332 -/* as of sdiod rev 0, supports 3 functions */
 333 -#define SBSDIO_NUM_FUNCTION            3
 334 -
 335  /* function 0 vendor specific CCCR registers */
 336
 337  #define SDIO_CCCR_BRCM_CARDCAP                 0xf0
 338 @@ -350,7 +347,8 @@ int brcmf_sdiod_ramrw(struct brcmf_sdio_
 339                       u8 *data, uint size);
 340
 341  /* Issue an abort to the specified function */
 342 -int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, u8 fn);
 343 +int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, struct sdio_func *func);
 344 +
 345  void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev);
 346  void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
 347                               enum brcmf_sdiod_state state);