Marcelo Tosatti | 876c9d3 | 2007-02-10 12:25:27 -0200 | [diff] [blame] | 1 | /** |
| 2 | * This file contains functions used in USB interface module. |
| 3 | */ |
| 4 | #include <linux/delay.h> |
| 5 | #include <linux/firmware.h> |
| 6 | #include <linux/netdevice.h> |
| 7 | #include <linux/usb.h> |
| 8 | |
| 9 | #include "host.h" |
| 10 | #include "sbi.h" |
| 11 | #include "decl.h" |
| 12 | #include "defs.h" |
| 13 | #include "dev.h" |
| 14 | #include "if_usb.h" |
| 15 | |
| 16 | #define MESSAGE_HEADER_LEN 4 |
| 17 | |
| 18 | static const char usbdriver_name[] = "usb8xxx"; |
| 19 | |
| 20 | static struct usb_device_id if_usb_table[] = { |
| 21 | /* Enter the device signature inside */ |
| 22 | { |
| 23 | USB_DEVICE(USB8388_VID_1, USB8388_PID_1), |
| 24 | }, |
| 25 | { |
| 26 | USB_DEVICE(USB8388_VID_2, USB8388_PID_2), |
| 27 | }, |
| 28 | {} /* Terminating entry */ |
| 29 | }; |
| 30 | |
| 31 | MODULE_DEVICE_TABLE(usb, if_usb_table); |
| 32 | |
| 33 | static void if_usb_receive(struct urb *urb); |
| 34 | static void if_usb_receive_fwload(struct urb *urb); |
| 35 | |
| 36 | /** |
| 37 | * @brief call back function to handle the status of the URB |
| 38 | * @param urb pointer to urb structure |
| 39 | * @return N/A |
| 40 | */ |
| 41 | static void if_usb_write_bulk_callback(struct urb *urb) |
| 42 | { |
| 43 | wlan_private *priv = (wlan_private *) (urb->context); |
| 44 | wlan_adapter *adapter = priv->adapter; |
| 45 | struct net_device *dev = priv->wlan_dev.netdev; |
| 46 | |
| 47 | /* handle the transmission complete validations */ |
| 48 | |
| 49 | if (urb->status != 0) { |
| 50 | /* print the failure status number for debug */ |
| 51 | lbs_pr_info("URB in failure status\n"); |
| 52 | } else { |
| 53 | lbs_dev_dbg(2, &urb->dev->dev, "URB status is successfull\n"); |
| 54 | lbs_dev_dbg(2, &urb->dev->dev, "Actual length transmitted %d\n", |
| 55 | urb->actual_length); |
| 56 | priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED; |
| 57 | /* Wake main thread if commands are pending */ |
| 58 | if (!adapter->cur_cmd) |
| 59 | wake_up_interruptible(&priv->mainthread.waitq); |
| 60 | if ((adapter->connect_status == libertas_connected)) |
| 61 | netif_wake_queue(dev); |
| 62 | } |
| 63 | |
| 64 | return; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * @brief free tx/rx urb, skb and rx buffer |
| 69 | * @param cardp pointer usb_card_rec |
| 70 | * @return N/A |
| 71 | */ |
| 72 | void if_usb_free(struct usb_card_rec *cardp) |
| 73 | { |
| 74 | ENTER(); |
| 75 | |
| 76 | /* Unlink tx & rx urb */ |
| 77 | usb_kill_urb(cardp->tx_urb); |
| 78 | usb_kill_urb(cardp->rx_urb); |
| 79 | |
| 80 | usb_free_urb(cardp->tx_urb); |
| 81 | cardp->tx_urb = NULL; |
| 82 | |
| 83 | usb_free_urb(cardp->rx_urb); |
| 84 | cardp->rx_urb = NULL; |
| 85 | |
| 86 | kfree(cardp->bulk_out_buffer); |
| 87 | cardp->bulk_out_buffer = NULL; |
| 88 | |
| 89 | LEAVE(); |
| 90 | return; |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * @brief sets the configuration values |
| 95 | * @param ifnum interface number |
| 96 | * @param id pointer to usb_device_id |
| 97 | * @return 0 on success, error code on failure |
| 98 | */ |
| 99 | static int if_usb_probe(struct usb_interface *intf, |
| 100 | const struct usb_device_id *id) |
| 101 | { |
| 102 | struct usb_device *udev; |
| 103 | struct usb_host_interface *iface_desc; |
| 104 | struct usb_endpoint_descriptor *endpoint; |
| 105 | wlan_private *pwlanpriv; |
| 106 | struct usb_card_rec *usb_cardp; |
| 107 | int i; |
| 108 | |
| 109 | udev = interface_to_usbdev(intf); |
| 110 | |
| 111 | usb_cardp = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL); |
| 112 | if (!usb_cardp) { |
| 113 | lbs_pr_err("Out of memory allocating private data.\n"); |
| 114 | goto error; |
| 115 | } |
| 116 | |
| 117 | usb_cardp->udev = udev; |
| 118 | iface_desc = intf->cur_altsetting; |
| 119 | |
| 120 | lbs_dev_dbg(1, &udev->dev, "bcdUSB = 0x%X bDeviceClass = 0x%X" |
| 121 | " bDeviceSubClass = 0x%X, bDeviceProtocol = 0x%X\n", |
| 122 | udev->descriptor.bcdUSB, |
| 123 | udev->descriptor.bDeviceClass, |
| 124 | udev->descriptor.bDeviceSubClass, |
| 125 | udev->descriptor.bDeviceProtocol); |
| 126 | |
| 127 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
| 128 | endpoint = &iface_desc->endpoint[i].desc; |
| 129 | if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) |
| 130 | && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == |
| 131 | USB_ENDPOINT_XFER_BULK)) { |
| 132 | /* we found a bulk in endpoint */ |
| 133 | lbs_dev_dbg(1, &udev->dev, "Bulk in size is %d\n", |
| 134 | endpoint->wMaxPacketSize); |
| 135 | if (! |
| 136 | (usb_cardp->rx_urb = |
| 137 | usb_alloc_urb(0, GFP_KERNEL))) { |
| 138 | lbs_dev_dbg(1, &udev->dev, |
| 139 | "Rx URB allocation failed\n"); |
| 140 | goto dealloc; |
| 141 | } |
| 142 | usb_cardp->rx_urb_recall = 0; |
| 143 | |
| 144 | usb_cardp->bulk_in_size = |
| 145 | endpoint->wMaxPacketSize; |
| 146 | usb_cardp->bulk_in_endpointAddr = |
| 147 | (endpoint-> |
| 148 | bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); |
| 149 | lbs_dev_dbg(1, &udev->dev, "in_endpoint = %d\n", |
| 150 | endpoint->bEndpointAddress); |
| 151 | } |
| 152 | |
| 153 | if (((endpoint-> |
| 154 | bEndpointAddress & USB_ENDPOINT_DIR_MASK) == |
| 155 | USB_DIR_OUT) |
| 156 | && ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == |
| 157 | USB_ENDPOINT_XFER_BULK)) { |
| 158 | /* We found bulk out endpoint */ |
| 159 | if (! |
| 160 | (usb_cardp->tx_urb = |
| 161 | usb_alloc_urb(0, GFP_KERNEL))) { |
| 162 | lbs_dev_dbg(1,&udev->dev, |
| 163 | "Tx URB allocation failed\n"); |
| 164 | goto dealloc; |
| 165 | } |
| 166 | |
| 167 | usb_cardp->bulk_out_size = |
| 168 | endpoint->wMaxPacketSize; |
| 169 | lbs_dev_dbg(1, &udev->dev, |
| 170 | "Bulk out size is %d\n", |
| 171 | endpoint->wMaxPacketSize); |
| 172 | usb_cardp->bulk_out_endpointAddr = |
| 173 | endpoint->bEndpointAddress; |
| 174 | lbs_dev_dbg(1, &udev->dev, "out_endpoint = %d\n", |
| 175 | endpoint->bEndpointAddress); |
| 176 | usb_cardp->bulk_out_buffer = |
| 177 | kmalloc(MRVDRV_ETH_TX_PACKET_BUFFER_SIZE, |
| 178 | GFP_KERNEL); |
| 179 | |
| 180 | if (!usb_cardp->bulk_out_buffer) { |
| 181 | lbs_dev_dbg(1, &udev->dev, |
| 182 | "Could not allocate buffer\n"); |
| 183 | goto dealloc; |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | |
| 189 | /* At this point wlan_add_card() will be called. Don't worry |
| 190 | * about keeping pwlanpriv around since it will be set on our |
| 191 | * usb device data in -> add() -> libertas_sbi_register_dev(). |
| 192 | */ |
| 193 | if (!(pwlanpriv = wlan_add_card(usb_cardp))) |
| 194 | goto dealloc; |
| 195 | |
| 196 | usb_get_dev(udev); |
| 197 | usb_set_intfdata(intf, usb_cardp); |
| 198 | |
| 199 | /* |
| 200 | * return card structure, which can be got back in the |
| 201 | * diconnect function as the ptr |
| 202 | * argument. |
| 203 | */ |
| 204 | return 0; |
| 205 | |
| 206 | dealloc: |
| 207 | if_usb_free(usb_cardp); |
| 208 | |
| 209 | error: |
| 210 | return -ENOMEM; |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * @brief free resource and cleanup |
| 215 | * @param udev pointer to usb_device |
| 216 | * @param ptr pointer to usb_cardp |
| 217 | * @return N/A |
| 218 | */ |
| 219 | static void if_usb_disconnect(struct usb_interface *intf) |
| 220 | { |
| 221 | struct usb_card_rec *cardp = usb_get_intfdata(intf); |
| 222 | wlan_private *priv = (wlan_private *) cardp->priv; |
| 223 | wlan_adapter *adapter = NULL; |
| 224 | |
| 225 | adapter = priv->adapter; |
| 226 | |
| 227 | /* |
| 228 | * Update Surprise removed to TRUE |
| 229 | */ |
| 230 | adapter->surpriseremoved = 1; |
| 231 | |
| 232 | /* card is removed and we can call wlan_remove_card */ |
| 233 | lbs_dev_dbg(1, &cardp->udev->dev, "call remove card\n"); |
| 234 | wlan_remove_card(cardp); |
| 235 | |
| 236 | /* Unlink and free urb */ |
| 237 | if_usb_free(cardp); |
| 238 | |
| 239 | usb_set_intfdata(intf, NULL); |
| 240 | usb_put_dev(interface_to_usbdev(intf)); |
| 241 | |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | /** |
| 246 | * @brief This function download FW |
| 247 | * @param priv pointer to wlan_private |
| 248 | * @return 0 |
| 249 | */ |
| 250 | static int if_prog_firmware(wlan_private * priv) |
| 251 | { |
| 252 | struct usb_card_rec *cardp = priv->wlan_dev.card; |
| 253 | struct FWData *fwdata; |
| 254 | struct fwheader *fwheader; |
| 255 | u8 *firmware = priv->firmware->data; |
| 256 | |
| 257 | fwdata = kmalloc(sizeof(struct FWData), GFP_ATOMIC); |
| 258 | |
| 259 | if (!fwdata) |
| 260 | return -1; |
| 261 | |
| 262 | fwheader = &fwdata->fwheader; |
| 263 | |
| 264 | if (!cardp->CRC_OK) { |
| 265 | cardp->totalbytes = cardp->fwlastblksent; |
| 266 | cardp->fwseqnum = cardp->lastseqnum - 1; |
| 267 | } |
| 268 | |
| 269 | lbs_dev_dbg(2, &cardp->udev->dev, "totalbytes = %d\n", |
| 270 | cardp->totalbytes); |
| 271 | |
| 272 | memcpy(fwheader, &firmware[cardp->totalbytes], |
| 273 | sizeof(struct fwheader)); |
| 274 | |
| 275 | cardp->fwlastblksent = cardp->totalbytes; |
| 276 | cardp->totalbytes += sizeof(struct fwheader); |
| 277 | |
| 278 | lbs_dev_dbg(2, &cardp->udev->dev,"Copy Data\n"); |
| 279 | memcpy(fwdata->data, &firmware[cardp->totalbytes], |
| 280 | fwdata->fwheader.datalength); |
| 281 | |
| 282 | lbs_dev_dbg(2, &cardp->udev->dev, |
| 283 | "Data length = %d\n", fwdata->fwheader.datalength); |
| 284 | |
| 285 | cardp->fwseqnum = cardp->fwseqnum + 1; |
| 286 | |
| 287 | fwdata->seqnum = cardp->fwseqnum; |
| 288 | cardp->lastseqnum = fwdata->seqnum; |
| 289 | cardp->totalbytes += fwdata->fwheader.datalength; |
| 290 | |
| 291 | if (fwheader->dnldcmd == FW_HAS_DATA_TO_RECV) { |
| 292 | lbs_dev_dbg(2, &cardp->udev->dev, "There is data to follow\n"); |
| 293 | lbs_dev_dbg(2, &cardp->udev->dev, |
| 294 | "seqnum = %d totalbytes = %d\n", cardp->fwseqnum, |
| 295 | cardp->totalbytes); |
| 296 | memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE); |
| 297 | usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE); |
| 298 | |
| 299 | } else if (fwdata->fwheader.dnldcmd == FW_HAS_LAST_BLOCK) { |
| 300 | lbs_dev_dbg(2, &cardp->udev->dev, |
| 301 | "Host has finished FW downloading\n"); |
| 302 | lbs_dev_dbg(2, &cardp->udev->dev, |
| 303 | "Donwloading FW JUMP BLOCK\n"); |
| 304 | memcpy(cardp->bulk_out_buffer, fwheader, FW_DATA_XMIT_SIZE); |
| 305 | usb_tx_block(priv, cardp->bulk_out_buffer, FW_DATA_XMIT_SIZE); |
| 306 | cardp->fwfinalblk = 1; |
| 307 | } |
| 308 | |
| 309 | lbs_dev_dbg(2, &cardp->udev->dev, |
| 310 | "The firmware download is done size is %d\n", |
| 311 | cardp->totalbytes); |
| 312 | |
| 313 | kfree(fwdata); |
| 314 | |
| 315 | return 0; |
| 316 | } |
| 317 | |
| 318 | static int libertas_do_reset(wlan_private *priv) |
| 319 | { |
| 320 | int ret; |
| 321 | struct usb_card_rec *cardp = priv->wlan_dev.card; |
| 322 | |
| 323 | ret = usb_reset_device(cardp->udev); |
| 324 | if (!ret) { |
| 325 | msleep(10); |
| 326 | reset_device(priv); |
| 327 | msleep(10); |
| 328 | } |
| 329 | return ret; |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * @brief This function transfer the data to the device. |
| 334 | * @param priv pointer to wlan_private |
| 335 | * @param payload pointer to payload data |
| 336 | * @param nb data length |
| 337 | * @return 0 or -1 |
| 338 | */ |
| 339 | int usb_tx_block(wlan_private * priv, u8 * payload, u16 nb) |
| 340 | { |
| 341 | /* pointer to card structure */ |
| 342 | struct usb_card_rec *cardp = priv->wlan_dev.card; |
| 343 | int ret = -1; |
| 344 | |
| 345 | /* check if device is removed */ |
| 346 | if (priv->adapter->surpriseremoved) { |
| 347 | lbs_dev_dbg(1, &cardp->udev->dev, "Device removed\n"); |
| 348 | goto tx_ret; |
| 349 | } |
| 350 | |
| 351 | usb_fill_bulk_urb(cardp->tx_urb, cardp->udev, |
| 352 | usb_sndbulkpipe(cardp->udev, |
| 353 | cardp->bulk_out_endpointAddr), |
| 354 | payload, nb, if_usb_write_bulk_callback, priv); |
| 355 | |
| 356 | cardp->tx_urb->transfer_flags |= URB_ZERO_PACKET; |
| 357 | |
| 358 | if ((ret = usb_submit_urb(cardp->tx_urb, GFP_ATOMIC))) { |
| 359 | /* transfer failed */ |
| 360 | lbs_dev_dbg(1, &cardp->udev->dev, "usb_submit_urb failed\n"); |
| 361 | ret = -1; |
| 362 | } else { |
| 363 | lbs_dev_dbg(2, &cardp->udev->dev, "usb_submit_urb success\n"); |
| 364 | ret = 0; |
| 365 | } |
| 366 | |
| 367 | tx_ret: |
| 368 | return ret; |
| 369 | } |
| 370 | |
| 371 | static int __if_usb_submit_rx_urb(wlan_private * priv, |
| 372 | void (*callbackfn) |
| 373 | (struct urb *urb)) |
| 374 | { |
| 375 | struct usb_card_rec *cardp = priv->wlan_dev.card; |
| 376 | struct sk_buff *skb; |
| 377 | struct read_cb_info *rinfo = &cardp->rinfo; |
| 378 | int ret = -1; |
| 379 | |
| 380 | if (!(skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE))) { |
| 381 | lbs_pr_err("No free skb\n"); |
| 382 | goto rx_ret; |
| 383 | } |
| 384 | |
| 385 | rinfo->skb = skb; |
| 386 | |
| 387 | /* Fill the receive configuration URB and initialise the Rx call back */ |
| 388 | usb_fill_bulk_urb(cardp->rx_urb, cardp->udev, |
| 389 | usb_rcvbulkpipe(cardp->udev, |
| 390 | cardp->bulk_in_endpointAddr), |
| 391 | skb->tail + IPFIELD_ALIGN_OFFSET, |
| 392 | MRVDRV_ETH_RX_PACKET_BUFFER_SIZE, callbackfn, |
| 393 | rinfo); |
| 394 | |
| 395 | cardp->rx_urb->transfer_flags |= URB_ZERO_PACKET; |
| 396 | |
| 397 | lbs_dev_dbg(2, &cardp->udev->dev, "Pointer for rx_urb %p\n", cardp->rx_urb); |
| 398 | if ((ret = usb_submit_urb(cardp->rx_urb, GFP_ATOMIC))) { |
| 399 | /* handle failure conditions */ |
| 400 | lbs_dev_dbg(1, &cardp->udev->dev, "Submit Rx URB failed\n"); |
| 401 | ret = -1; |
| 402 | } else { |
| 403 | lbs_dev_dbg(2, &cardp->udev->dev, "Submit Rx URB success\n"); |
| 404 | ret = 0; |
| 405 | } |
| 406 | |
| 407 | rx_ret: |
| 408 | return ret; |
| 409 | } |
| 410 | |
| 411 | static inline int if_usb_submit_rx_urb_fwload(wlan_private * priv) |
| 412 | { |
| 413 | return __if_usb_submit_rx_urb(priv, &if_usb_receive_fwload); |
| 414 | } |
| 415 | |
| 416 | static inline int if_usb_submit_rx_urb(wlan_private * priv) |
| 417 | { |
| 418 | return __if_usb_submit_rx_urb(priv, &if_usb_receive); |
| 419 | } |
| 420 | |
| 421 | static void if_usb_receive_fwload(struct urb *urb) |
| 422 | { |
| 423 | struct read_cb_info *rinfo = (struct read_cb_info *)urb->context; |
| 424 | wlan_private *priv = rinfo->priv; |
| 425 | struct sk_buff *skb = rinfo->skb; |
| 426 | struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card; |
| 427 | struct fwsyncheader *syncfwheader; |
| 428 | struct bootcmdrespStr bootcmdresp; |
| 429 | |
| 430 | if (urb->status) { |
| 431 | lbs_dev_dbg(1, &cardp->udev->dev, |
| 432 | "URB status is failed during fw load\n"); |
| 433 | kfree_skb(skb); |
| 434 | return; |
| 435 | } |
| 436 | |
| 437 | if (cardp->bootcmdresp == 0) { |
| 438 | memcpy (&bootcmdresp, skb->data + IPFIELD_ALIGN_OFFSET, |
| 439 | sizeof(bootcmdresp)); |
| 440 | if (cardp->udev->descriptor.bcdDevice < 0x3106) { |
| 441 | kfree_skb(skb); |
| 442 | if_usb_submit_rx_urb_fwload(priv); |
| 443 | cardp->bootcmdresp = 1; |
| 444 | lbs_dev_dbg(1, &cardp->udev->dev, |
| 445 | "Received valid boot command response\n"); |
| 446 | return; |
| 447 | } |
| 448 | if (bootcmdresp.u32magicnumber != BOOT_CMD_MAGIC_NUMBER) { |
| 449 | lbs_pr_info( |
| 450 | "boot cmd response wrong magic number (0x%x)\n", |
| 451 | bootcmdresp.u32magicnumber); |
| 452 | } else if (bootcmdresp.u8cmd_tag != BOOT_CMD_FW_BY_USB) { |
| 453 | lbs_pr_info( |
| 454 | "boot cmd response cmd_tag error (%d)\n", |
| 455 | bootcmdresp.u8cmd_tag); |
| 456 | } else if (bootcmdresp.u8result != BOOT_CMD_RESP_OK) { |
| 457 | lbs_pr_info( |
| 458 | "boot cmd response result error (%d)\n", |
| 459 | bootcmdresp.u8result); |
| 460 | } else { |
| 461 | cardp->bootcmdresp = 1; |
| 462 | lbs_dev_dbg(1, &cardp->udev->dev, |
| 463 | "Received valid boot command response\n"); |
| 464 | } |
| 465 | kfree_skb(skb); |
| 466 | if_usb_submit_rx_urb_fwload(priv); |
| 467 | return; |
| 468 | } |
| 469 | |
| 470 | syncfwheader = kmalloc(sizeof(struct fwsyncheader), GFP_ATOMIC); |
| 471 | if (!syncfwheader) { |
| 472 | lbs_dev_dbg(1, &cardp->udev->dev, "Failure to allocate syncfwheader\n"); |
| 473 | kfree_skb(skb); |
| 474 | return; |
| 475 | } |
| 476 | |
| 477 | memcpy(syncfwheader, skb->data + IPFIELD_ALIGN_OFFSET, |
| 478 | sizeof(struct fwsyncheader)); |
| 479 | |
| 480 | if (!syncfwheader->cmd) { |
| 481 | lbs_dev_dbg(2, &cardp->udev->dev, |
| 482 | "FW received Blk with correct CRC\n"); |
| 483 | lbs_dev_dbg(2, &cardp->udev->dev, |
| 484 | "FW received Blk seqnum = %d\n", |
| 485 | syncfwheader->seqnum); |
| 486 | cardp->CRC_OK = 1; |
| 487 | } else { |
| 488 | lbs_dev_dbg(1, &cardp->udev->dev, |
| 489 | "FW received Blk with CRC error\n"); |
| 490 | cardp->CRC_OK = 0; |
| 491 | } |
| 492 | |
| 493 | kfree_skb(skb); |
| 494 | |
| 495 | if (cardp->fwfinalblk) { |
| 496 | cardp->fwdnldover = 1; |
| 497 | goto exit; |
| 498 | } |
| 499 | |
| 500 | if_prog_firmware(priv); |
| 501 | |
| 502 | if_usb_submit_rx_urb_fwload(priv); |
| 503 | exit: |
| 504 | kfree(syncfwheader); |
| 505 | |
| 506 | return; |
| 507 | |
| 508 | } |
| 509 | |
| 510 | #define MRVDRV_MIN_PKT_LEN 30 |
| 511 | |
| 512 | static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb, |
| 513 | struct usb_card_rec *cardp, |
| 514 | wlan_private *priv) |
| 515 | { |
| 516 | if (recvlength > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + |
| 517 | MESSAGE_HEADER_LEN || recvlength < MRVDRV_MIN_PKT_LEN) { |
| 518 | lbs_dev_dbg(1, &cardp->udev->dev, |
| 519 | "Packet length is Invalid\n"); |
| 520 | kfree_skb(skb); |
| 521 | return; |
| 522 | } |
| 523 | |
| 524 | skb_reserve(skb, IPFIELD_ALIGN_OFFSET); |
| 525 | skb_put(skb, recvlength); |
| 526 | skb_pull(skb, MESSAGE_HEADER_LEN); |
| 527 | libertas_process_rxed_packet(priv, skb); |
| 528 | priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN); |
| 529 | } |
| 530 | |
| 531 | static inline void process_cmdrequest(int recvlength, u8 *recvbuff, |
| 532 | struct sk_buff *skb, |
| 533 | struct usb_card_rec *cardp, |
| 534 | wlan_private *priv) |
| 535 | { |
| 536 | u8 *cmdbuf; |
| 537 | if (recvlength > MRVDRV_SIZE_OF_CMD_BUFFER) { |
| 538 | lbs_dev_dbg(1, &cardp->udev->dev, |
| 539 | "The receive buffer is too large\n"); |
| 540 | kfree_skb(skb); |
| 541 | return; |
| 542 | } |
| 543 | |
| 544 | if (!in_interrupt()) |
| 545 | BUG(); |
| 546 | |
| 547 | spin_lock(&priv->adapter->driver_lock); |
| 548 | /* take care of cur_cmd = NULL case by reading the |
| 549 | * data to clear the interrupt */ |
| 550 | if (!priv->adapter->cur_cmd) { |
| 551 | cmdbuf = priv->wlan_dev.upld_buf; |
| 552 | priv->adapter->hisregcpy &= ~his_cmdupldrdy; |
| 553 | } else |
| 554 | cmdbuf = priv->adapter->cur_cmd->bufvirtualaddr; |
| 555 | |
| 556 | cardp->usb_int_cause |= his_cmdupldrdy; |
| 557 | priv->wlan_dev.upld_len = (recvlength - MESSAGE_HEADER_LEN); |
| 558 | memcpy(cmdbuf, recvbuff + MESSAGE_HEADER_LEN, |
| 559 | priv->wlan_dev.upld_len); |
| 560 | |
| 561 | kfree_skb(skb); |
| 562 | libertas_interrupt(priv->wlan_dev.netdev); |
| 563 | spin_unlock(&priv->adapter->driver_lock); |
| 564 | |
| 565 | lbs_dev_dbg(1, &cardp->udev->dev, |
| 566 | "Wake up main thread to handle cmd response\n"); |
| 567 | |
| 568 | return; |
| 569 | } |
| 570 | |
| 571 | /** |
| 572 | * @brief This function reads of the packet into the upload buff, |
| 573 | * wake up the main thread and initialise the Rx callack. |
| 574 | * |
| 575 | * @param urb pointer to struct urb |
| 576 | * @return N/A |
| 577 | */ |
| 578 | static void if_usb_receive(struct urb *urb) |
| 579 | { |
| 580 | struct read_cb_info *rinfo = (struct read_cb_info *)urb->context; |
| 581 | wlan_private *priv = rinfo->priv; |
| 582 | struct sk_buff *skb = rinfo->skb; |
| 583 | struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card; |
| 584 | |
| 585 | int recvlength = urb->actual_length; |
| 586 | u8 *recvbuff = NULL; |
| 587 | u32 recvtype; |
| 588 | |
| 589 | ENTER(); |
| 590 | |
| 591 | if (recvlength) { |
| 592 | if (urb->status) { |
| 593 | lbs_dev_dbg(1, &cardp->udev->dev, |
| 594 | "URB status is failed\n"); |
| 595 | kfree_skb(skb); |
| 596 | goto setup_for_next; |
| 597 | } |
| 598 | |
| 599 | recvbuff = skb->data + IPFIELD_ALIGN_OFFSET; |
| 600 | memcpy(&recvtype, recvbuff, sizeof(u32)); |
| 601 | lbs_dev_dbg(1, &cardp->udev->dev, |
| 602 | "Recv length = 0x%x\n", recvlength); |
| 603 | lbs_dev_dbg(1, &cardp->udev->dev, |
| 604 | "Receive type = 0x%X\n", recvtype); |
| 605 | recvtype = le32_to_cpu(recvtype); |
| 606 | lbs_dev_dbg(1, &cardp->udev->dev, |
| 607 | "Receive type after = 0x%X\n", recvtype); |
| 608 | } else if (urb->status) |
| 609 | goto rx_exit; |
| 610 | |
| 611 | |
| 612 | switch (recvtype) { |
| 613 | case CMD_TYPE_DATA: |
| 614 | process_cmdtypedata(recvlength, skb, cardp, priv); |
| 615 | break; |
| 616 | |
| 617 | case CMD_TYPE_REQUEST: |
| 618 | process_cmdrequest(recvlength, recvbuff, skb, cardp, priv); |
| 619 | break; |
| 620 | |
| 621 | case CMD_TYPE_INDICATION: |
| 622 | /* Event cause handling */ |
| 623 | spin_lock(&priv->adapter->driver_lock); |
| 624 | cardp->usb_event_cause = *(u32 *) (recvbuff + MESSAGE_HEADER_LEN); |
| 625 | lbs_dev_dbg(1, &cardp->udev->dev,"**EVENT** 0x%X\n", |
| 626 | cardp->usb_event_cause); |
| 627 | if (cardp->usb_event_cause & 0xffff0000) { |
| 628 | libertas_send_tx_feedback(priv); |
Dan Williams | 12a4d26 | 2007-05-10 23:08:54 -0400 | [diff] [blame^] | 629 | spin_unlock(&priv->adapter->driver_lock); |
Marcelo Tosatti | 876c9d3 | 2007-02-10 12:25:27 -0200 | [diff] [blame] | 630 | break; |
| 631 | } |
| 632 | cardp->usb_event_cause = le32_to_cpu(cardp->usb_event_cause) << 3; |
| 633 | cardp->usb_int_cause |= his_cardevent; |
| 634 | kfree_skb(skb); |
| 635 | libertas_interrupt(priv->wlan_dev.netdev); |
| 636 | spin_unlock(&priv->adapter->driver_lock); |
| 637 | goto rx_exit; |
| 638 | default: |
| 639 | kfree_skb(skb); |
| 640 | break; |
| 641 | } |
| 642 | |
| 643 | setup_for_next: |
| 644 | if_usb_submit_rx_urb(priv); |
| 645 | rx_exit: |
| 646 | LEAVE(); |
| 647 | return; |
| 648 | } |
| 649 | |
| 650 | /** |
| 651 | * @brief This function downloads data to FW |
| 652 | * @param priv pointer to wlan_private structure |
| 653 | * @param type type of data |
| 654 | * @param buf pointer to data buffer |
| 655 | * @param len number of bytes |
| 656 | * @return 0 or -1 |
| 657 | */ |
| 658 | int libertas_sbi_host_to_card(wlan_private * priv, u8 type, u8 * payload, u16 nb) |
| 659 | { |
| 660 | int ret = -1; |
| 661 | u32 tmp; |
| 662 | struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card; |
| 663 | |
| 664 | lbs_dev_dbg(1, &cardp->udev->dev,"*** type = %u\n", type); |
| 665 | lbs_dev_dbg(1, &cardp->udev->dev,"size after = %d\n", nb); |
| 666 | |
| 667 | if (type == MVMS_CMD) { |
| 668 | tmp = cpu_to_le32(CMD_TYPE_REQUEST); |
| 669 | priv->wlan_dev.dnld_sent = DNLD_CMD_SENT; |
| 670 | memcpy(cardp->bulk_out_buffer, (u8 *) & tmp, |
| 671 | MESSAGE_HEADER_LEN); |
| 672 | |
| 673 | } else { |
| 674 | tmp = cpu_to_le32(CMD_TYPE_DATA); |
| 675 | priv->wlan_dev.dnld_sent = DNLD_DATA_SENT; |
| 676 | memcpy(cardp->bulk_out_buffer, (u8 *) & tmp, |
| 677 | MESSAGE_HEADER_LEN); |
| 678 | } |
| 679 | |
| 680 | memcpy((cardp->bulk_out_buffer + MESSAGE_HEADER_LEN), payload, nb); |
| 681 | |
| 682 | ret = |
| 683 | usb_tx_block(priv, cardp->bulk_out_buffer, nb + MESSAGE_HEADER_LEN); |
| 684 | |
| 685 | return ret; |
| 686 | } |
| 687 | |
| 688 | /* called with adapter->driver_lock held */ |
| 689 | int libertas_sbi_get_int_status(wlan_private * priv, u8 * ireg) |
| 690 | { |
| 691 | struct usb_card_rec *cardp = priv->wlan_dev.card; |
| 692 | |
| 693 | *ireg = cardp->usb_int_cause; |
| 694 | cardp->usb_int_cause = 0; |
| 695 | |
| 696 | lbs_dev_dbg(1, &cardp->udev->dev,"Int cause is 0x%X\n", *ireg); |
| 697 | |
| 698 | return 0; |
| 699 | } |
| 700 | |
| 701 | int libertas_sbi_read_event_cause(wlan_private * priv) |
| 702 | { |
| 703 | struct usb_card_rec *cardp = priv->wlan_dev.card; |
| 704 | priv->adapter->eventcause = cardp->usb_event_cause; |
| 705 | /* Re-submit rx urb here to avoid event lost issue */ |
| 706 | if_usb_submit_rx_urb(priv); |
| 707 | return 0; |
| 708 | } |
| 709 | |
| 710 | int reset_device(wlan_private *priv) |
| 711 | { |
| 712 | int ret; |
| 713 | |
| 714 | ret = libertas_prepare_and_send_command(priv, cmd_802_11_reset, |
| 715 | cmd_act_halt, 0, 0, NULL); |
| 716 | msleep_interruptible(10); |
| 717 | |
| 718 | return ret; |
| 719 | } |
| 720 | |
| 721 | int libertas_sbi_unregister_dev(wlan_private * priv) |
| 722 | { |
| 723 | int ret = 0; |
| 724 | |
| 725 | /* Need to send a Reset command to device before USB resources freed |
| 726 | * and wlan_remove_card() called, then device can handle FW download |
| 727 | * again. |
| 728 | */ |
| 729 | if (priv) |
| 730 | reset_device(priv); |
| 731 | |
| 732 | return ret; |
| 733 | } |
| 734 | |
| 735 | |
| 736 | /** |
| 737 | * @brief This function register usb device and initialize parameter |
| 738 | * @param priv pointer to wlan_private |
| 739 | * @return 0 or -1 |
| 740 | */ |
| 741 | int libertas_sbi_register_dev(wlan_private * priv) |
| 742 | { |
| 743 | |
| 744 | struct usb_card_rec *cardp = (struct usb_card_rec *)priv->wlan_dev.card; |
| 745 | ENTER(); |
| 746 | |
| 747 | cardp->priv = priv; |
| 748 | cardp->eth_dev = priv->wlan_dev.netdev; |
| 749 | priv->hotplug_device = &(cardp->udev->dev); |
| 750 | |
| 751 | SET_NETDEV_DEV(cardp->eth_dev, &(cardp->udev->dev)); |
| 752 | |
| 753 | lbs_dev_dbg(1, &cardp->udev->dev, "udev pointer is at %p\n", |
| 754 | cardp->udev); |
| 755 | |
| 756 | LEAVE(); |
| 757 | return 0; |
| 758 | } |
| 759 | |
| 760 | |
| 761 | |
| 762 | int libertas_sbi_prog_firmware(wlan_private * priv) |
| 763 | { |
| 764 | struct usb_card_rec *cardp = priv->wlan_dev.card; |
| 765 | int i = 0; |
| 766 | static int reset_count = 10; |
| 767 | |
| 768 | ENTER(); |
| 769 | |
| 770 | cardp->rinfo.priv = priv; |
| 771 | |
| 772 | restart: |
| 773 | if (if_usb_submit_rx_urb_fwload(priv) < 0) { |
| 774 | lbs_dev_dbg(1, &cardp->udev->dev, "URB submission is failed\n"); |
| 775 | LEAVE(); |
| 776 | return -1; |
| 777 | } |
| 778 | |
Marcelo Tosatti | 876c9d3 | 2007-02-10 12:25:27 -0200 | [diff] [blame] | 779 | cardp->bootcmdresp = 0; |
| 780 | do { |
| 781 | int j = 0; |
| 782 | i++; |
| 783 | /* Issue Boot command = 1, Boot from Download-FW */ |
| 784 | if_usb_issue_boot_command(priv, BOOT_CMD_FW_BY_USB); |
| 785 | /* wait for command response */ |
| 786 | do { |
| 787 | j++; |
| 788 | msleep_interruptible(100); |
| 789 | } while (cardp->bootcmdresp == 0 && j < 10); |
| 790 | } while (cardp->bootcmdresp == 0 && i < 5); |
| 791 | |
| 792 | if (cardp->bootcmdresp == 0) { |
| 793 | if (--reset_count >= 0) { |
| 794 | libertas_do_reset(priv); |
| 795 | goto restart; |
| 796 | } |
| 797 | return -1; |
| 798 | } |
Marcelo Tosatti | 876c9d3 | 2007-02-10 12:25:27 -0200 | [diff] [blame] | 799 | |
| 800 | i = 0; |
| 801 | priv->adapter->fw_ready = 0; |
| 802 | |
| 803 | cardp->totalbytes = 0; |
| 804 | cardp->fwlastblksent = 0; |
| 805 | cardp->CRC_OK = 1; |
| 806 | cardp->fwdnldover = 0; |
| 807 | cardp->fwseqnum = -1; |
| 808 | cardp->totalbytes = 0; |
| 809 | cardp->fwfinalblk = 0; |
| 810 | |
| 811 | if_prog_firmware(priv); |
| 812 | |
| 813 | do { |
| 814 | lbs_dev_dbg(1, &cardp->udev->dev,"Wlan sched timeout\n"); |
| 815 | i++; |
| 816 | msleep_interruptible(100); |
| 817 | if (priv->adapter->surpriseremoved || i >= 20) |
| 818 | break; |
| 819 | } while (!cardp->fwdnldover); |
| 820 | |
| 821 | if (!cardp->fwdnldover) { |
| 822 | lbs_pr_info("failed to load fw, resetting device!\n"); |
| 823 | if (--reset_count >= 0) { |
| 824 | libertas_do_reset(priv); |
| 825 | goto restart; |
| 826 | } |
| 827 | |
| 828 | lbs_pr_info("FW download failure, time = %d ms\n", i * 100); |
| 829 | LEAVE(); |
| 830 | return -1; |
| 831 | } |
| 832 | |
| 833 | if_usb_submit_rx_urb(priv); |
| 834 | |
| 835 | /* Delay 200 ms to waiting for the FW ready */ |
| 836 | msleep_interruptible(200); |
| 837 | |
| 838 | priv->adapter->fw_ready = 1; |
| 839 | |
| 840 | LEAVE(); |
| 841 | return 0; |
| 842 | } |
| 843 | |
| 844 | /** |
| 845 | * @brief Given a usb_card_rec return its wlan_private |
| 846 | * @param card pointer to a usb_card_rec |
| 847 | * @return pointer to wlan_private |
| 848 | */ |
| 849 | wlan_private *libertas_sbi_get_priv(void *card) |
| 850 | { |
| 851 | struct usb_card_rec *cardp = card; |
| 852 | return cardp->priv; |
| 853 | } |
| 854 | |
| 855 | #ifdef ENABLE_PM |
| 856 | int libertas_sbi_suspend(wlan_private * priv) |
| 857 | { |
| 858 | return 0; |
| 859 | } |
| 860 | |
| 861 | int libertas_sbi_resume(wlan_private * priv) |
| 862 | { |
| 863 | return 0; |
| 864 | } |
| 865 | #endif |
| 866 | |
| 867 | #ifdef CONFIG_PM |
| 868 | static int if_usb_suspend(struct usb_interface *intf, pm_message_t message) |
| 869 | { |
| 870 | struct usb_card_rec *cardp = usb_get_intfdata(intf); |
| 871 | wlan_private *priv = cardp->priv; |
| 872 | |
| 873 | ENTER(); |
| 874 | |
| 875 | if (priv->adapter->psstate != PS_STATE_FULL_POWER) |
| 876 | return -1; |
| 877 | |
| 878 | netif_device_detach(cardp->eth_dev); |
| 879 | |
| 880 | /* Unlink tx & rx urb */ |
| 881 | usb_kill_urb(cardp->tx_urb); |
| 882 | usb_kill_urb(cardp->rx_urb); |
| 883 | |
| 884 | cardp->rx_urb_recall = 1; |
| 885 | |
| 886 | LEAVE(); |
| 887 | return 0; |
| 888 | } |
| 889 | |
| 890 | static int if_usb_resume(struct usb_interface *intf) |
| 891 | { |
| 892 | struct usb_card_rec *cardp = usb_get_intfdata(intf); |
| 893 | |
| 894 | ENTER(); |
| 895 | |
| 896 | cardp->rx_urb_recall = 0; |
| 897 | |
| 898 | if_usb_submit_rx_urb(cardp->priv); |
| 899 | |
| 900 | netif_device_attach(cardp->eth_dev); |
| 901 | |
| 902 | LEAVE(); |
| 903 | return 0; |
| 904 | } |
| 905 | #else |
| 906 | #define if_usb_suspend NULL |
| 907 | #define if_usb_resume NULL |
| 908 | #endif |
| 909 | |
| 910 | static struct usb_driver if_usb_driver = { |
| 911 | /* driver name */ |
| 912 | .name = usbdriver_name, |
| 913 | /* probe function name */ |
| 914 | .probe = if_usb_probe, |
| 915 | /* disconnect function name */ |
| 916 | .disconnect = if_usb_disconnect, |
| 917 | /* device signature table */ |
| 918 | .id_table = if_usb_table, |
| 919 | .suspend = if_usb_suspend, |
| 920 | .resume = if_usb_resume, |
| 921 | }; |
| 922 | |
| 923 | /** |
| 924 | * @brief This function registers driver. |
| 925 | * @param add pointer to add_card callback function |
| 926 | * @param remove pointer to remove card callback function |
| 927 | * @param arg pointer to call back function parameter |
| 928 | * @return dummy success variable |
| 929 | */ |
| 930 | int libertas_sbi_register(void) |
| 931 | { |
| 932 | /* |
| 933 | * API registers the Marvell USB driver |
| 934 | * to the USB system |
| 935 | */ |
| 936 | usb_register(&if_usb_driver); |
| 937 | |
| 938 | /* Return success to wlan layer */ |
| 939 | return 0; |
| 940 | } |
| 941 | |
| 942 | /** |
| 943 | * @brief This function removes usb driver. |
| 944 | * @return N/A |
| 945 | */ |
| 946 | void libertas_sbi_unregister(void) |
| 947 | { |
| 948 | /* API unregisters the driver from USB subsystem */ |
| 949 | usb_deregister(&if_usb_driver); |
| 950 | return; |
| 951 | } |