Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Marvell Wireless LAN device driver: USB specific handling |
| 3 | * |
| 4 | * Copyright (C) 2012, Marvell International Ltd. |
| 5 | * |
| 6 | * This software file (the "File") is distributed by Marvell International |
| 7 | * Ltd. under the terms of the GNU General Public License Version 2, June 1991 |
| 8 | * (the "License"). You may use, redistribute and/or modify this File in |
| 9 | * accordance with the terms and conditions of the License, a copy of which |
| 10 | * is available by writing to the Free Software Foundation, Inc., |
| 11 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the |
| 12 | * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. |
| 13 | * |
| 14 | * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE |
| 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE |
| 16 | * ARE EXPRESSLY DISCLAIMED. The License provides additional details about |
| 17 | * this warranty disclaimer. |
| 18 | */ |
| 19 | |
| 20 | #include "main.h" |
| 21 | #include "usb.h" |
| 22 | |
| 23 | #define USB_VERSION "1.0" |
| 24 | |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 25 | static struct mwifiex_if_ops usb_ops; |
| 26 | static struct semaphore add_remove_card_sem; |
Amitkumar Karwar | 027d330 | 2013-08-23 16:48:21 -0700 | [diff] [blame] | 27 | static struct usb_card_rec *usb_card; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 28 | |
| 29 | static struct usb_device_id mwifiex_usb_table[] = { |
Yogesh Ashok Powar | 68458de | 2014-01-09 19:36:55 -0800 | [diff] [blame] | 30 | /* 8797 */ |
| 31 | {USB_DEVICE(USB8XXX_VID, USB8797_PID_1)}, |
| 32 | {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8797_PID_2, |
| 33 | USB_CLASS_VENDOR_SPEC, |
| 34 | USB_SUBCLASS_VENDOR_SPEC, 0xff)}, |
| 35 | /* 8897 */ |
| 36 | {USB_DEVICE(USB8XXX_VID, USB8897_PID_1)}, |
| 37 | {USB_DEVICE_AND_INTERFACE_INFO(USB8XXX_VID, USB8897_PID_2, |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 38 | USB_CLASS_VENDOR_SPEC, |
| 39 | USB_SUBCLASS_VENDOR_SPEC, 0xff)}, |
| 40 | { } /* Terminating entry */ |
| 41 | }; |
| 42 | |
| 43 | MODULE_DEVICE_TABLE(usb, mwifiex_usb_table); |
| 44 | |
| 45 | static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size); |
| 46 | |
| 47 | /* This function handles received packet. Necessary action is taken based on |
| 48 | * cmd/event/data. |
| 49 | */ |
| 50 | static int mwifiex_usb_recv(struct mwifiex_adapter *adapter, |
| 51 | struct sk_buff *skb, u8 ep) |
| 52 | { |
| 53 | struct device *dev = adapter->dev; |
| 54 | u32 recv_type; |
| 55 | __le32 tmp; |
Amitkumar Karwar | 8311f0d | 2012-06-20 20:21:13 -0700 | [diff] [blame] | 56 | int ret; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 57 | |
| 58 | if (adapter->hs_activated) |
| 59 | mwifiex_process_hs_config(adapter); |
| 60 | |
| 61 | if (skb->len < INTF_HEADER_LEN) { |
| 62 | dev_err(dev, "%s: invalid skb->len\n", __func__); |
| 63 | return -1; |
| 64 | } |
| 65 | |
| 66 | switch (ep) { |
| 67 | case MWIFIEX_USB_EP_CMD_EVENT: |
| 68 | dev_dbg(dev, "%s: EP_CMD_EVENT\n", __func__); |
| 69 | skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN); |
| 70 | recv_type = le32_to_cpu(tmp); |
| 71 | skb_pull(skb, INTF_HEADER_LEN); |
| 72 | |
| 73 | switch (recv_type) { |
| 74 | case MWIFIEX_USB_TYPE_CMD: |
| 75 | if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) { |
| 76 | dev_err(dev, "CMD: skb->len too large\n"); |
Amitkumar Karwar | 8311f0d | 2012-06-20 20:21:13 -0700 | [diff] [blame] | 77 | ret = -1; |
| 78 | goto exit_restore_skb; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 79 | } else if (!adapter->curr_cmd) { |
| 80 | dev_dbg(dev, "CMD: no curr_cmd\n"); |
| 81 | if (adapter->ps_state == PS_STATE_SLEEP_CFM) { |
| 82 | mwifiex_process_sleep_confirm_resp( |
| 83 | adapter, skb->data, |
| 84 | skb->len); |
Amitkumar Karwar | 8311f0d | 2012-06-20 20:21:13 -0700 | [diff] [blame] | 85 | ret = 0; |
| 86 | goto exit_restore_skb; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 87 | } |
Amitkumar Karwar | 8311f0d | 2012-06-20 20:21:13 -0700 | [diff] [blame] | 88 | ret = -1; |
| 89 | goto exit_restore_skb; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 90 | } |
| 91 | |
| 92 | adapter->curr_cmd->resp_skb = skb; |
| 93 | adapter->cmd_resp_received = true; |
| 94 | break; |
| 95 | case MWIFIEX_USB_TYPE_EVENT: |
| 96 | if (skb->len < sizeof(u32)) { |
| 97 | dev_err(dev, "EVENT: skb->len too small\n"); |
Amitkumar Karwar | 8311f0d | 2012-06-20 20:21:13 -0700 | [diff] [blame] | 98 | ret = -1; |
| 99 | goto exit_restore_skb; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 100 | } |
| 101 | skb_copy_from_linear_data(skb, &tmp, sizeof(u32)); |
| 102 | adapter->event_cause = le32_to_cpu(tmp); |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 103 | dev_dbg(dev, "event_cause %#x\n", adapter->event_cause); |
| 104 | |
| 105 | if (skb->len > MAX_EVENT_SIZE) { |
| 106 | dev_err(dev, "EVENT: event body too large\n"); |
Amitkumar Karwar | 8311f0d | 2012-06-20 20:21:13 -0700 | [diff] [blame] | 107 | ret = -1; |
| 108 | goto exit_restore_skb; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 109 | } |
| 110 | |
Amitkumar Karwar | e80c81d | 2012-06-20 20:21:12 -0700 | [diff] [blame] | 111 | memcpy(adapter->event_body, skb->data + |
| 112 | MWIFIEX_EVENT_HEADER_LEN, skb->len); |
| 113 | |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 114 | adapter->event_received = true; |
| 115 | adapter->event_skb = skb; |
| 116 | break; |
| 117 | default: |
| 118 | dev_err(dev, "unknown recv_type %#x\n", recv_type); |
| 119 | return -1; |
| 120 | } |
| 121 | break; |
| 122 | case MWIFIEX_USB_EP_DATA: |
| 123 | dev_dbg(dev, "%s: EP_DATA\n", __func__); |
| 124 | if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) { |
| 125 | dev_err(dev, "DATA: skb->len too large\n"); |
| 126 | return -1; |
| 127 | } |
| 128 | skb_queue_tail(&adapter->usb_rx_data_q, skb); |
| 129 | adapter->data_received = true; |
| 130 | break; |
| 131 | default: |
| 132 | dev_err(dev, "%s: unknown endport %#x\n", __func__, ep); |
| 133 | return -1; |
| 134 | } |
| 135 | |
| 136 | return -EINPROGRESS; |
Amitkumar Karwar | 8311f0d | 2012-06-20 20:21:13 -0700 | [diff] [blame] | 137 | |
| 138 | exit_restore_skb: |
| 139 | /* The buffer will be reused for further cmds/events */ |
| 140 | skb_push(skb, INTF_HEADER_LEN); |
| 141 | |
| 142 | return ret; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 143 | } |
| 144 | |
| 145 | static void mwifiex_usb_rx_complete(struct urb *urb) |
| 146 | { |
| 147 | struct urb_context *context = (struct urb_context *)urb->context; |
| 148 | struct mwifiex_adapter *adapter = context->adapter; |
| 149 | struct sk_buff *skb = context->skb; |
| 150 | struct usb_card_rec *card; |
| 151 | int recv_length = urb->actual_length; |
| 152 | int size, status; |
| 153 | |
| 154 | if (!adapter || !adapter->card) { |
| 155 | pr_err("mwifiex adapter or card structure is not valid\n"); |
| 156 | return; |
| 157 | } |
| 158 | |
| 159 | card = (struct usb_card_rec *)adapter->card; |
| 160 | if (card->rx_cmd_ep == context->ep) |
| 161 | atomic_dec(&card->rx_cmd_urb_pending); |
| 162 | else |
| 163 | atomic_dec(&card->rx_data_urb_pending); |
| 164 | |
| 165 | if (recv_length) { |
| 166 | if (urb->status || (adapter->surprise_removed)) { |
| 167 | dev_err(adapter->dev, |
| 168 | "URB status is failed: %d\n", urb->status); |
| 169 | /* Do not free skb in case of command ep */ |
| 170 | if (card->rx_cmd_ep != context->ep) |
| 171 | dev_kfree_skb_any(skb); |
| 172 | goto setup_for_next; |
| 173 | } |
| 174 | if (skb->len > recv_length) |
| 175 | skb_trim(skb, recv_length); |
| 176 | else |
| 177 | skb_put(skb, recv_length - skb->len); |
| 178 | |
| 179 | atomic_inc(&adapter->rx_pending); |
| 180 | status = mwifiex_usb_recv(adapter, skb, context->ep); |
| 181 | |
| 182 | dev_dbg(adapter->dev, "info: recv_length=%d, status=%d\n", |
| 183 | recv_length, status); |
| 184 | if (status == -EINPROGRESS) { |
| 185 | queue_work(adapter->workqueue, &adapter->main_work); |
| 186 | |
| 187 | /* urb for data_ep is re-submitted now; |
| 188 | * urb for cmd_ep will be re-submitted in callback |
| 189 | * mwifiex_usb_recv_complete |
| 190 | */ |
| 191 | if (card->rx_cmd_ep == context->ep) |
| 192 | return; |
| 193 | } else { |
| 194 | atomic_dec(&adapter->rx_pending); |
| 195 | if (status == -1) |
| 196 | dev_err(adapter->dev, |
| 197 | "received data processing failed!\n"); |
| 198 | |
| 199 | /* Do not free skb in case of command ep */ |
| 200 | if (card->rx_cmd_ep != context->ep) |
| 201 | dev_kfree_skb_any(skb); |
| 202 | } |
| 203 | } else if (urb->status) { |
| 204 | if (!adapter->is_suspended) { |
| 205 | dev_warn(adapter->dev, |
| 206 | "Card is removed: %d\n", urb->status); |
| 207 | adapter->surprise_removed = true; |
| 208 | } |
| 209 | dev_kfree_skb_any(skb); |
| 210 | return; |
| 211 | } else { |
| 212 | /* Do not free skb in case of command ep */ |
| 213 | if (card->rx_cmd_ep != context->ep) |
| 214 | dev_kfree_skb_any(skb); |
| 215 | |
| 216 | /* fall through setup_for_next */ |
| 217 | } |
| 218 | |
| 219 | setup_for_next: |
| 220 | if (card->rx_cmd_ep == context->ep) |
| 221 | size = MWIFIEX_RX_CMD_BUF_SIZE; |
| 222 | else |
| 223 | size = MWIFIEX_RX_DATA_BUF_SIZE; |
| 224 | |
| 225 | mwifiex_usb_submit_rx_urb(context, size); |
| 226 | |
| 227 | return; |
| 228 | } |
| 229 | |
| 230 | static void mwifiex_usb_tx_complete(struct urb *urb) |
| 231 | { |
| 232 | struct urb_context *context = (struct urb_context *)(urb->context); |
| 233 | struct mwifiex_adapter *adapter = context->adapter; |
| 234 | struct usb_card_rec *card = adapter->card; |
| 235 | |
| 236 | dev_dbg(adapter->dev, "%s: status: %d\n", __func__, urb->status); |
| 237 | |
| 238 | if (context->ep == card->tx_cmd_ep) { |
| 239 | dev_dbg(adapter->dev, "%s: CMD\n", __func__); |
| 240 | atomic_dec(&card->tx_cmd_urb_pending); |
| 241 | adapter->cmd_sent = false; |
| 242 | } else { |
| 243 | dev_dbg(adapter->dev, "%s: DATA\n", __func__); |
| 244 | atomic_dec(&card->tx_data_urb_pending); |
Avinash Patil | 47411a0 | 2012-11-01 18:44:16 -0700 | [diff] [blame] | 245 | mwifiex_write_data_complete(adapter, context->skb, 0, |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 246 | urb->status ? -1 : 0); |
| 247 | } |
| 248 | |
| 249 | queue_work(adapter->workqueue, &adapter->main_work); |
| 250 | |
| 251 | return; |
| 252 | } |
| 253 | |
| 254 | static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size) |
| 255 | { |
| 256 | struct mwifiex_adapter *adapter = ctx->adapter; |
| 257 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 258 | |
| 259 | if (card->rx_cmd_ep != ctx->ep) { |
| 260 | ctx->skb = dev_alloc_skb(size); |
| 261 | if (!ctx->skb) { |
| 262 | dev_err(adapter->dev, |
| 263 | "%s: dev_alloc_skb failed\n", __func__); |
| 264 | return -ENOMEM; |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | usb_fill_bulk_urb(ctx->urb, card->udev, |
| 269 | usb_rcvbulkpipe(card->udev, ctx->ep), ctx->skb->data, |
| 270 | size, mwifiex_usb_rx_complete, (void *)ctx); |
| 271 | |
| 272 | if (card->rx_cmd_ep == ctx->ep) |
| 273 | atomic_inc(&card->rx_cmd_urb_pending); |
| 274 | else |
| 275 | atomic_inc(&card->rx_data_urb_pending); |
| 276 | |
| 277 | if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) { |
| 278 | dev_err(adapter->dev, "usb_submit_urb failed\n"); |
| 279 | dev_kfree_skb_any(ctx->skb); |
| 280 | ctx->skb = NULL; |
| 281 | |
| 282 | if (card->rx_cmd_ep == ctx->ep) |
| 283 | atomic_dec(&card->rx_cmd_urb_pending); |
| 284 | else |
| 285 | atomic_dec(&card->rx_data_urb_pending); |
| 286 | |
| 287 | return -1; |
| 288 | } |
| 289 | |
| 290 | return 0; |
| 291 | } |
| 292 | |
| 293 | static void mwifiex_usb_free(struct usb_card_rec *card) |
| 294 | { |
| 295 | int i; |
| 296 | |
| 297 | if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) |
| 298 | usb_kill_urb(card->rx_cmd.urb); |
| 299 | |
| 300 | usb_free_urb(card->rx_cmd.urb); |
| 301 | card->rx_cmd.urb = NULL; |
| 302 | |
| 303 | if (atomic_read(&card->rx_data_urb_pending)) |
| 304 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) |
| 305 | if (card->rx_data_list[i].urb) |
| 306 | usb_kill_urb(card->rx_data_list[i].urb); |
| 307 | |
| 308 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { |
| 309 | usb_free_urb(card->rx_data_list[i].urb); |
| 310 | card->rx_data_list[i].urb = NULL; |
| 311 | } |
| 312 | |
| 313 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) { |
| 314 | usb_free_urb(card->tx_data_list[i].urb); |
| 315 | card->tx_data_list[i].urb = NULL; |
| 316 | } |
| 317 | |
| 318 | usb_free_urb(card->tx_cmd.urb); |
| 319 | card->tx_cmd.urb = NULL; |
| 320 | |
| 321 | return; |
| 322 | } |
| 323 | |
| 324 | /* This function probes an mwifiex device and registers it. It allocates |
| 325 | * the card structure, initiates the device registration and initialization |
| 326 | * procedure by adding a logical interface. |
| 327 | */ |
| 328 | static int mwifiex_usb_probe(struct usb_interface *intf, |
| 329 | const struct usb_device_id *id) |
| 330 | { |
| 331 | struct usb_device *udev = interface_to_usbdev(intf); |
| 332 | struct usb_host_interface *iface_desc = intf->cur_altsetting; |
| 333 | struct usb_endpoint_descriptor *epd; |
| 334 | int ret, i; |
| 335 | struct usb_card_rec *card; |
| 336 | u16 id_vendor, id_product, bcd_device, bcd_usb; |
| 337 | |
| 338 | card = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL); |
| 339 | if (!card) |
| 340 | return -ENOMEM; |
| 341 | |
| 342 | id_vendor = le16_to_cpu(udev->descriptor.idVendor); |
| 343 | id_product = le16_to_cpu(udev->descriptor.idProduct); |
| 344 | bcd_device = le16_to_cpu(udev->descriptor.bcdDevice); |
| 345 | bcd_usb = le16_to_cpu(udev->descriptor.bcdUSB); |
| 346 | pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n", |
| 347 | id_vendor, id_product, bcd_device); |
| 348 | |
| 349 | /* PID_1 is used for firmware downloading only */ |
Yogesh Ashok Powar | 68458de | 2014-01-09 19:36:55 -0800 | [diff] [blame] | 350 | switch (id_product) { |
| 351 | case USB8797_PID_1: |
| 352 | case USB8897_PID_1: |
| 353 | card->usb_boot_state = USB8XXX_FW_DNLD; |
| 354 | break; |
| 355 | case USB8797_PID_2: |
| 356 | case USB8897_PID_2: |
| 357 | card->usb_boot_state = USB8XXX_FW_READY; |
| 358 | break; |
| 359 | default: |
| 360 | pr_warning("unknown id_product %#x\n", id_product); |
| 361 | card->usb_boot_state = USB8XXX_FW_DNLD; |
| 362 | break; |
| 363 | } |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 364 | |
| 365 | card->udev = udev; |
| 366 | card->intf = intf; |
| 367 | |
Masanari Iida | 6979783 | 2012-11-30 22:08:31 +0900 | [diff] [blame] | 368 | pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocol=%#x\n", |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 369 | udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass, |
| 370 | udev->descriptor.bDeviceSubClass, |
| 371 | udev->descriptor.bDeviceProtocol); |
| 372 | |
| 373 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { |
| 374 | epd = &iface_desc->endpoint[i].desc; |
| 375 | if (usb_endpoint_dir_in(epd) && |
| 376 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && |
| 377 | usb_endpoint_xfer_bulk(epd)) { |
| 378 | pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", |
| 379 | le16_to_cpu(epd->wMaxPacketSize), |
| 380 | epd->bEndpointAddress); |
| 381 | card->rx_cmd_ep = usb_endpoint_num(epd); |
| 382 | atomic_set(&card->rx_cmd_urb_pending, 0); |
| 383 | } |
| 384 | if (usb_endpoint_dir_in(epd) && |
| 385 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && |
| 386 | usb_endpoint_xfer_bulk(epd)) { |
| 387 | pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n", |
| 388 | le16_to_cpu(epd->wMaxPacketSize), |
| 389 | epd->bEndpointAddress); |
| 390 | card->rx_data_ep = usb_endpoint_num(epd); |
| 391 | atomic_set(&card->rx_data_urb_pending, 0); |
| 392 | } |
| 393 | if (usb_endpoint_dir_out(epd) && |
| 394 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA && |
| 395 | usb_endpoint_xfer_bulk(epd)) { |
| 396 | pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", |
| 397 | le16_to_cpu(epd->wMaxPacketSize), |
| 398 | epd->bEndpointAddress); |
| 399 | card->tx_data_ep = usb_endpoint_num(epd); |
| 400 | atomic_set(&card->tx_data_urb_pending, 0); |
| 401 | } |
| 402 | if (usb_endpoint_dir_out(epd) && |
| 403 | usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT && |
| 404 | usb_endpoint_xfer_bulk(epd)) { |
| 405 | pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n", |
| 406 | le16_to_cpu(epd->wMaxPacketSize), |
| 407 | epd->bEndpointAddress); |
| 408 | card->tx_cmd_ep = usb_endpoint_num(epd); |
| 409 | atomic_set(&card->tx_cmd_urb_pending, 0); |
| 410 | card->bulk_out_maxpktsize = |
| 411 | le16_to_cpu(epd->wMaxPacketSize); |
| 412 | } |
| 413 | } |
| 414 | |
| 415 | usb_set_intfdata(intf, card); |
| 416 | |
| 417 | ret = mwifiex_add_card(card, &add_remove_card_sem, &usb_ops, |
| 418 | MWIFIEX_USB); |
| 419 | if (ret) { |
| 420 | pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret); |
| 421 | usb_reset_device(udev); |
| 422 | kfree(card); |
| 423 | return ret; |
| 424 | } |
| 425 | |
| 426 | usb_get_dev(udev); |
| 427 | |
| 428 | return 0; |
| 429 | } |
| 430 | |
| 431 | /* Kernel needs to suspend all functions separately. Therefore all |
| 432 | * registered functions must have drivers with suspend and resume |
| 433 | * methods. Failing that the kernel simply removes the whole card. |
| 434 | * |
| 435 | * If already not suspended, this function allocates and sends a |
| 436 | * 'host sleep activate' request to the firmware and turns off the traffic. |
| 437 | */ |
| 438 | static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message) |
| 439 | { |
| 440 | struct usb_card_rec *card = usb_get_intfdata(intf); |
| 441 | struct mwifiex_adapter *adapter; |
| 442 | int i; |
| 443 | |
| 444 | if (!card || !card->adapter) { |
| 445 | pr_err("%s: card or card->adapter is NULL\n", __func__); |
| 446 | return 0; |
| 447 | } |
| 448 | adapter = card->adapter; |
| 449 | |
| 450 | if (unlikely(adapter->is_suspended)) |
| 451 | dev_warn(adapter->dev, "Device already suspended\n"); |
| 452 | |
| 453 | mwifiex_enable_hs(adapter); |
| 454 | |
| 455 | /* 'is_suspended' flag indicates device is suspended. |
| 456 | * It must be set here before the usb_kill_urb() calls. Reason |
| 457 | * is in the complete handlers, urb->status(= -ENOENT) and |
| 458 | * this flag is used in combination to distinguish between a |
| 459 | * 'suspended' state and a 'disconnect' one. |
| 460 | */ |
| 461 | adapter->is_suspended = true; |
| 462 | |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 463 | if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb) |
| 464 | usb_kill_urb(card->rx_cmd.urb); |
| 465 | |
| 466 | if (atomic_read(&card->rx_data_urb_pending)) |
| 467 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) |
| 468 | if (card->rx_data_list[i].urb) |
| 469 | usb_kill_urb(card->rx_data_list[i].urb); |
| 470 | |
| 471 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) |
| 472 | if (card->tx_data_list[i].urb) |
| 473 | usb_kill_urb(card->tx_data_list[i].urb); |
| 474 | |
| 475 | if (card->tx_cmd.urb) |
| 476 | usb_kill_urb(card->tx_cmd.urb); |
| 477 | |
| 478 | return 0; |
| 479 | } |
| 480 | |
| 481 | /* Kernel needs to suspend all functions separately. Therefore all |
| 482 | * registered functions must have drivers with suspend and resume |
| 483 | * methods. Failing that the kernel simply removes the whole card. |
| 484 | * |
| 485 | * If already not resumed, this function turns on the traffic and |
| 486 | * sends a 'host sleep cancel' request to the firmware. |
| 487 | */ |
| 488 | static int mwifiex_usb_resume(struct usb_interface *intf) |
| 489 | { |
| 490 | struct usb_card_rec *card = usb_get_intfdata(intf); |
| 491 | struct mwifiex_adapter *adapter; |
| 492 | int i; |
| 493 | |
| 494 | if (!card || !card->adapter) { |
| 495 | pr_err("%s: card or card->adapter is NULL\n", __func__); |
| 496 | return 0; |
| 497 | } |
| 498 | adapter = card->adapter; |
| 499 | |
| 500 | if (unlikely(!adapter->is_suspended)) { |
| 501 | dev_warn(adapter->dev, "Device already resumed\n"); |
| 502 | return 0; |
| 503 | } |
| 504 | |
| 505 | /* Indicate device resumed. The netdev queue will be resumed only |
| 506 | * after the urbs have been re-submitted |
| 507 | */ |
| 508 | adapter->is_suspended = false; |
| 509 | |
| 510 | if (!atomic_read(&card->rx_data_urb_pending)) |
| 511 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) |
| 512 | mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], |
| 513 | MWIFIEX_RX_DATA_BUF_SIZE); |
| 514 | |
| 515 | if (!atomic_read(&card->rx_cmd_urb_pending)) { |
| 516 | card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); |
| 517 | if (card->rx_cmd.skb) |
| 518 | mwifiex_usb_submit_rx_urb(&card->rx_cmd, |
| 519 | MWIFIEX_RX_CMD_BUF_SIZE); |
| 520 | } |
| 521 | |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 522 | /* Disable Host Sleep */ |
| 523 | if (adapter->hs_activated) |
| 524 | mwifiex_cancel_hs(mwifiex_get_priv(adapter, |
| 525 | MWIFIEX_BSS_ROLE_ANY), |
| 526 | MWIFIEX_ASYNC_CMD); |
| 527 | |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 528 | return 0; |
| 529 | } |
| 530 | |
| 531 | static void mwifiex_usb_disconnect(struct usb_interface *intf) |
| 532 | { |
| 533 | struct usb_card_rec *card = usb_get_intfdata(intf); |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 534 | |
Ujjal Roy | 353d2a6 | 2013-11-14 19:10:42 -0800 | [diff] [blame] | 535 | if (!card) { |
| 536 | pr_err("%s: card is NULL\n", __func__); |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 537 | return; |
| 538 | } |
| 539 | |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 540 | mwifiex_usb_free(card); |
| 541 | |
Ujjal Roy | 353d2a6 | 2013-11-14 19:10:42 -0800 | [diff] [blame] | 542 | if (card->adapter) { |
| 543 | struct mwifiex_adapter *adapter = card->adapter; |
| 544 | |
| 545 | if (!adapter->priv_num) |
| 546 | return; |
| 547 | |
| 548 | dev_dbg(adapter->dev, "%s: removing card\n", __func__); |
| 549 | mwifiex_remove_card(adapter, &add_remove_card_sem); |
| 550 | } |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 551 | |
| 552 | usb_set_intfdata(intf, NULL); |
| 553 | usb_put_dev(interface_to_usbdev(intf)); |
| 554 | kfree(card); |
Ujjal Roy | 353d2a6 | 2013-11-14 19:10:42 -0800 | [diff] [blame] | 555 | usb_card = NULL; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 556 | |
| 557 | return; |
| 558 | } |
| 559 | |
| 560 | static struct usb_driver mwifiex_usb_driver = { |
Bing Zhao | e4ceb0f | 2014-02-21 12:23:00 -0800 | [diff] [blame] | 561 | .name = "mwifiex_usb", |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 562 | .probe = mwifiex_usb_probe, |
| 563 | .disconnect = mwifiex_usb_disconnect, |
| 564 | .id_table = mwifiex_usb_table, |
| 565 | .suspend = mwifiex_usb_suspend, |
| 566 | .resume = mwifiex_usb_resume, |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 567 | }; |
| 568 | |
| 569 | static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter) |
| 570 | { |
| 571 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 572 | int i; |
| 573 | |
| 574 | card->tx_cmd.adapter = adapter; |
| 575 | card->tx_cmd.ep = card->tx_cmd_ep; |
| 576 | |
| 577 | card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); |
| 578 | if (!card->tx_cmd.urb) { |
| 579 | dev_err(adapter->dev, "tx_cmd.urb allocation failed\n"); |
| 580 | return -ENOMEM; |
| 581 | } |
| 582 | |
| 583 | card->tx_data_ix = 0; |
| 584 | |
| 585 | for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) { |
| 586 | card->tx_data_list[i].adapter = adapter; |
| 587 | card->tx_data_list[i].ep = card->tx_data_ep; |
| 588 | |
| 589 | card->tx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); |
| 590 | if (!card->tx_data_list[i].urb) { |
| 591 | dev_err(adapter->dev, |
| 592 | "tx_data_list[] urb allocation failed\n"); |
| 593 | return -ENOMEM; |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | return 0; |
| 598 | } |
| 599 | |
| 600 | static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter) |
| 601 | { |
| 602 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 603 | int i; |
| 604 | |
| 605 | card->rx_cmd.adapter = adapter; |
| 606 | card->rx_cmd.ep = card->rx_cmd_ep; |
| 607 | |
| 608 | card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL); |
| 609 | if (!card->rx_cmd.urb) { |
| 610 | dev_err(adapter->dev, "rx_cmd.urb allocation failed\n"); |
| 611 | return -ENOMEM; |
| 612 | } |
| 613 | |
| 614 | card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE); |
| 615 | if (!card->rx_cmd.skb) { |
| 616 | dev_err(adapter->dev, "rx_cmd.skb allocation failed\n"); |
| 617 | return -ENOMEM; |
| 618 | } |
| 619 | |
| 620 | if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE)) |
| 621 | return -1; |
| 622 | |
| 623 | for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) { |
| 624 | card->rx_data_list[i].adapter = adapter; |
| 625 | card->rx_data_list[i].ep = card->rx_data_ep; |
| 626 | |
| 627 | card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL); |
| 628 | if (!card->rx_data_list[i].urb) { |
| 629 | dev_err(adapter->dev, |
| 630 | "rx_data_list[] urb allocation failed\n"); |
| 631 | return -1; |
| 632 | } |
| 633 | if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i], |
| 634 | MWIFIEX_RX_DATA_BUF_SIZE)) |
| 635 | return -1; |
| 636 | } |
| 637 | |
| 638 | return 0; |
| 639 | } |
| 640 | |
| 641 | static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, |
| 642 | u32 *len, u8 ep, u32 timeout) |
| 643 | { |
| 644 | struct usb_card_rec *card = adapter->card; |
| 645 | int actual_length, ret; |
| 646 | |
| 647 | if (!(*len % card->bulk_out_maxpktsize)) |
| 648 | (*len)++; |
| 649 | |
| 650 | /* Send the data block */ |
| 651 | ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf, |
| 652 | *len, &actual_length, timeout); |
| 653 | if (ret) { |
| 654 | dev_err(adapter->dev, "usb_bulk_msg for tx failed: %d\n", ret); |
Bing Zhao | 5b2e2ec | 2013-01-25 18:23:00 -0800 | [diff] [blame] | 655 | return ret; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 656 | } |
| 657 | |
| 658 | *len = actual_length; |
| 659 | |
| 660 | return ret; |
| 661 | } |
| 662 | |
| 663 | static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf, |
| 664 | u32 *len, u8 ep, u32 timeout) |
| 665 | { |
| 666 | struct usb_card_rec *card = adapter->card; |
| 667 | int actual_length, ret; |
| 668 | |
| 669 | /* Receive the data response */ |
| 670 | ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf, |
| 671 | *len, &actual_length, timeout); |
| 672 | if (ret) { |
| 673 | dev_err(adapter->dev, "usb_bulk_msg for rx failed: %d\n", ret); |
Bing Zhao | 5b2e2ec | 2013-01-25 18:23:00 -0800 | [diff] [blame] | 674 | return ret; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 675 | } |
| 676 | |
| 677 | *len = actual_length; |
| 678 | |
| 679 | return ret; |
| 680 | } |
| 681 | |
| 682 | /* This function write a command/data packet to card. */ |
| 683 | static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep, |
| 684 | struct sk_buff *skb, |
| 685 | struct mwifiex_tx_param *tx_param) |
| 686 | { |
| 687 | struct usb_card_rec *card = adapter->card; |
| 688 | struct urb_context *context; |
| 689 | u8 *data = (u8 *)skb->data; |
| 690 | struct urb *tx_urb; |
| 691 | |
| 692 | if (adapter->is_suspended) { |
| 693 | dev_err(adapter->dev, |
| 694 | "%s: not allowed while suspended\n", __func__); |
| 695 | return -1; |
| 696 | } |
| 697 | |
| 698 | if (adapter->surprise_removed) { |
| 699 | dev_err(adapter->dev, "%s: device removed\n", __func__); |
| 700 | return -1; |
| 701 | } |
| 702 | |
| 703 | if (ep == card->tx_data_ep && |
| 704 | atomic_read(&card->tx_data_urb_pending) >= MWIFIEX_TX_DATA_URB) { |
| 705 | return -EBUSY; |
| 706 | } |
| 707 | |
| 708 | dev_dbg(adapter->dev, "%s: ep=%d\n", __func__, ep); |
| 709 | |
| 710 | if (ep == card->tx_cmd_ep) { |
| 711 | context = &card->tx_cmd; |
| 712 | } else { |
| 713 | if (card->tx_data_ix >= MWIFIEX_TX_DATA_URB) |
| 714 | card->tx_data_ix = 0; |
| 715 | context = &card->tx_data_list[card->tx_data_ix++]; |
| 716 | } |
| 717 | |
| 718 | context->adapter = adapter; |
| 719 | context->ep = ep; |
| 720 | context->skb = skb; |
| 721 | tx_urb = context->urb; |
| 722 | |
| 723 | usb_fill_bulk_urb(tx_urb, card->udev, usb_sndbulkpipe(card->udev, ep), |
| 724 | data, skb->len, mwifiex_usb_tx_complete, |
| 725 | (void *)context); |
| 726 | |
| 727 | tx_urb->transfer_flags |= URB_ZERO_PACKET; |
| 728 | |
| 729 | if (ep == card->tx_cmd_ep) |
| 730 | atomic_inc(&card->tx_cmd_urb_pending); |
| 731 | else |
| 732 | atomic_inc(&card->tx_data_urb_pending); |
| 733 | |
| 734 | if (usb_submit_urb(tx_urb, GFP_ATOMIC)) { |
| 735 | dev_err(adapter->dev, "%s: usb_submit_urb failed\n", __func__); |
| 736 | if (ep == card->tx_cmd_ep) { |
| 737 | atomic_dec(&card->tx_cmd_urb_pending); |
| 738 | } else { |
| 739 | atomic_dec(&card->tx_data_urb_pending); |
| 740 | if (card->tx_data_ix) |
| 741 | card->tx_data_ix--; |
| 742 | else |
| 743 | card->tx_data_ix = MWIFIEX_TX_DATA_URB; |
| 744 | } |
| 745 | |
| 746 | return -1; |
| 747 | } else { |
| 748 | if (ep == card->tx_data_ep && |
| 749 | atomic_read(&card->tx_data_urb_pending) == |
| 750 | MWIFIEX_TX_DATA_URB) |
| 751 | return -ENOSR; |
| 752 | } |
| 753 | |
| 754 | return -EINPROGRESS; |
| 755 | } |
| 756 | |
| 757 | /* This function register usb device and initialize parameter. */ |
| 758 | static int mwifiex_register_dev(struct mwifiex_adapter *adapter) |
| 759 | { |
| 760 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 761 | |
| 762 | card->adapter = adapter; |
| 763 | adapter->dev = &card->udev->dev; |
Ujjal Roy | 353d2a6 | 2013-11-14 19:10:42 -0800 | [diff] [blame] | 764 | usb_card = card; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 765 | |
Yogesh Ashok Powar | 68458de | 2014-01-09 19:36:55 -0800 | [diff] [blame] | 766 | switch (le16_to_cpu(card->udev->descriptor.idProduct)) { |
| 767 | case USB8897_PID_1: |
| 768 | case USB8897_PID_2: |
| 769 | strcpy(adapter->fw_name, USB8897_DEFAULT_FW_NAME); |
| 770 | break; |
| 771 | case USB8797_PID_1: |
| 772 | case USB8797_PID_2: |
| 773 | default: |
| 774 | strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME); |
| 775 | break; |
| 776 | } |
| 777 | |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 778 | return 0; |
| 779 | } |
| 780 | |
Amitkumar Karwar | 2739a95 | 2013-07-22 19:17:51 -0700 | [diff] [blame] | 781 | static void mwifiex_unregister_dev(struct mwifiex_adapter *adapter) |
| 782 | { |
| 783 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 784 | |
Ujjal Roy | 353d2a6 | 2013-11-14 19:10:42 -0800 | [diff] [blame] | 785 | card->adapter = NULL; |
Amitkumar Karwar | 2739a95 | 2013-07-22 19:17:51 -0700 | [diff] [blame] | 786 | } |
| 787 | |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 788 | static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, |
| 789 | struct mwifiex_fw_image *fw) |
| 790 | { |
| 791 | int ret = 0; |
| 792 | u8 *firmware = fw->fw_buf, *recv_buff; |
Yogesh Ashok Powar | 68458de | 2014-01-09 19:36:55 -0800 | [diff] [blame] | 793 | u32 retries = USB8XXX_FW_MAX_RETRY, dlen; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 794 | u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0; |
| 795 | struct fw_data *fwdata; |
| 796 | struct fw_sync_header sync_fw; |
| 797 | u8 check_winner = 1; |
| 798 | |
| 799 | if (!firmware) { |
| 800 | dev_err(adapter->dev, |
| 801 | "No firmware image found! Terminating download\n"); |
| 802 | ret = -1; |
| 803 | goto fw_exit; |
| 804 | } |
| 805 | |
| 806 | /* Allocate memory for transmit */ |
| 807 | fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL); |
| 808 | if (!fwdata) |
| 809 | goto fw_exit; |
| 810 | |
| 811 | /* Allocate memory for receive */ |
| 812 | recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL); |
| 813 | if (!recv_buff) |
| 814 | goto cleanup; |
| 815 | |
| 816 | do { |
| 817 | /* Send pseudo data to check winner status first */ |
| 818 | if (check_winner) { |
| 819 | memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header)); |
| 820 | dlen = 0; |
| 821 | } else { |
| 822 | /* copy the header of the fw_data to get the length */ |
Sasha Levin | fc40ca9 | 2013-01-02 16:23:01 -0800 | [diff] [blame] | 823 | memcpy(&fwdata->fw_hdr, &firmware[tlen], |
| 824 | sizeof(struct fw_header)); |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 825 | |
| 826 | dlen = le32_to_cpu(fwdata->fw_hdr.data_len); |
| 827 | dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd); |
| 828 | tlen += sizeof(struct fw_header); |
| 829 | |
Sasha Levin | fc40ca9 | 2013-01-02 16:23:01 -0800 | [diff] [blame] | 830 | memcpy(fwdata->data, &firmware[tlen], dlen); |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 831 | |
| 832 | fwdata->seq_num = cpu_to_le32(fw_seqnum); |
| 833 | tlen += dlen; |
| 834 | } |
| 835 | |
| 836 | /* If the send/receive fails or CRC occurs then retry */ |
| 837 | while (retries--) { |
| 838 | u8 *buf = (u8 *)fwdata; |
| 839 | u32 len = FW_DATA_XMIT_SIZE; |
| 840 | |
| 841 | /* send the firmware block */ |
| 842 | ret = mwifiex_write_data_sync(adapter, buf, &len, |
| 843 | MWIFIEX_USB_EP_CMD_EVENT, |
| 844 | MWIFIEX_USB_TIMEOUT); |
| 845 | if (ret) { |
| 846 | dev_err(adapter->dev, |
| 847 | "write_data_sync: failed: %d\n", ret); |
| 848 | continue; |
| 849 | } |
| 850 | |
| 851 | buf = recv_buff; |
| 852 | len = FW_DNLD_RX_BUF_SIZE; |
| 853 | |
| 854 | /* Receive the firmware block response */ |
| 855 | ret = mwifiex_read_data_sync(adapter, buf, &len, |
| 856 | MWIFIEX_USB_EP_CMD_EVENT, |
| 857 | MWIFIEX_USB_TIMEOUT); |
| 858 | if (ret) { |
| 859 | dev_err(adapter->dev, |
| 860 | "read_data_sync: failed: %d\n", ret); |
| 861 | continue; |
| 862 | } |
| 863 | |
| 864 | memcpy(&sync_fw, recv_buff, |
| 865 | sizeof(struct fw_sync_header)); |
| 866 | |
| 867 | /* check 1st firmware block resp for highest bit set */ |
| 868 | if (check_winner) { |
| 869 | if (le32_to_cpu(sync_fw.cmd) & 0x80000000) { |
| 870 | dev_warn(adapter->dev, |
| 871 | "USB is not the winner %#x\n", |
| 872 | sync_fw.cmd); |
| 873 | |
| 874 | /* returning success */ |
| 875 | ret = 0; |
| 876 | goto cleanup; |
| 877 | } |
| 878 | |
| 879 | dev_dbg(adapter->dev, |
| 880 | "USB is the winner, start to download FW\n"); |
| 881 | |
| 882 | check_winner = 0; |
| 883 | break; |
| 884 | } |
| 885 | |
| 886 | /* check the firmware block response for CRC errors */ |
| 887 | if (sync_fw.cmd) { |
| 888 | dev_err(adapter->dev, |
| 889 | "FW received block with CRC %#x\n", |
| 890 | sync_fw.cmd); |
| 891 | ret = -1; |
| 892 | continue; |
| 893 | } |
| 894 | |
Yogesh Ashok Powar | 68458de | 2014-01-09 19:36:55 -0800 | [diff] [blame] | 895 | retries = USB8XXX_FW_MAX_RETRY; |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 896 | break; |
| 897 | } |
| 898 | fw_seqnum++; |
| 899 | } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries); |
| 900 | |
| 901 | cleanup: |
| 902 | dev_dbg(adapter->dev, "%s: %d bytes downloaded\n", __func__, tlen); |
| 903 | |
| 904 | kfree(recv_buff); |
| 905 | kfree(fwdata); |
| 906 | |
| 907 | if (retries) |
| 908 | ret = 0; |
| 909 | fw_exit: |
| 910 | return ret; |
| 911 | } |
| 912 | |
| 913 | static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter, |
| 914 | struct mwifiex_fw_image *fw) |
| 915 | { |
| 916 | int ret; |
| 917 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 918 | |
Yogesh Ashok Powar | 68458de | 2014-01-09 19:36:55 -0800 | [diff] [blame] | 919 | if (card->usb_boot_state == USB8XXX_FW_DNLD) { |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 920 | ret = mwifiex_prog_fw_w_helper(adapter, fw); |
| 921 | if (ret) |
| 922 | return -1; |
| 923 | |
| 924 | /* Boot state changes after successful firmware download */ |
Yogesh Ashok Powar | 68458de | 2014-01-09 19:36:55 -0800 | [diff] [blame] | 925 | if (card->usb_boot_state == USB8XXX_FW_DNLD) |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 926 | return -1; |
| 927 | } |
| 928 | |
| 929 | ret = mwifiex_usb_rx_init(adapter); |
| 930 | if (!ret) |
| 931 | ret = mwifiex_usb_tx_init(adapter); |
| 932 | |
| 933 | return ret; |
| 934 | } |
| 935 | |
| 936 | static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep) |
| 937 | { |
| 938 | struct usb_card_rec *card = (struct usb_card_rec *)adapter->card; |
| 939 | |
| 940 | skb_push(card->rx_cmd.skb, INTF_HEADER_LEN); |
| 941 | if ((ep == card->rx_cmd_ep) && |
| 942 | (!atomic_read(&card->rx_cmd_urb_pending))) |
| 943 | mwifiex_usb_submit_rx_urb(&card->rx_cmd, |
| 944 | MWIFIEX_RX_CMD_BUF_SIZE); |
| 945 | |
| 946 | return; |
| 947 | } |
| 948 | |
| 949 | static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter, |
| 950 | struct sk_buff *skb) |
| 951 | { |
| 952 | atomic_dec(&adapter->rx_pending); |
| 953 | mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT); |
| 954 | |
| 955 | return 0; |
| 956 | } |
| 957 | |
Ujjal Roy | ca8d6df | 2013-12-02 23:17:53 -0800 | [diff] [blame] | 958 | static int mwifiex_usb_data_complete(struct mwifiex_adapter *adapter) |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 959 | { |
| 960 | atomic_dec(&adapter->rx_pending); |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 961 | |
| 962 | return 0; |
| 963 | } |
| 964 | |
| 965 | /* This function wakes up the card. */ |
| 966 | static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) |
| 967 | { |
| 968 | /* Simulation of HS_AWAKE event */ |
| 969 | adapter->pm_wakeup_fw_try = false; |
| 970 | adapter->pm_wakeup_card_req = false; |
| 971 | adapter->ps_state = PS_STATE_AWAKE; |
| 972 | |
| 973 | return 0; |
| 974 | } |
| 975 | |
| 976 | static struct mwifiex_if_ops usb_ops = { |
| 977 | .register_dev = mwifiex_register_dev, |
Amitkumar Karwar | 2739a95 | 2013-07-22 19:17:51 -0700 | [diff] [blame] | 978 | .unregister_dev = mwifiex_unregister_dev, |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 979 | .wakeup = mwifiex_pm_wakeup_card, |
| 980 | .wakeup_complete = mwifiex_pm_wakeup_card_complete, |
| 981 | |
| 982 | /* USB specific */ |
| 983 | .dnld_fw = mwifiex_usb_dnld_fw, |
| 984 | .cmdrsp_complete = mwifiex_usb_cmd_event_complete, |
| 985 | .event_complete = mwifiex_usb_cmd_event_complete, |
| 986 | .data_complete = mwifiex_usb_data_complete, |
| 987 | .host_to_card = mwifiex_usb_host_to_card, |
| 988 | }; |
| 989 | |
| 990 | /* This function initializes the USB driver module. |
| 991 | * |
| 992 | * This initiates the semaphore and registers the device with |
| 993 | * USB bus. |
| 994 | */ |
| 995 | static int mwifiex_usb_init_module(void) |
| 996 | { |
| 997 | int ret; |
| 998 | |
| 999 | pr_debug("Marvell USB8797 Driver\n"); |
| 1000 | |
| 1001 | sema_init(&add_remove_card_sem, 1); |
| 1002 | |
| 1003 | ret = usb_register(&mwifiex_usb_driver); |
| 1004 | if (ret) |
| 1005 | pr_err("Driver register failed!\n"); |
| 1006 | else |
| 1007 | pr_debug("info: Driver registered successfully!\n"); |
| 1008 | |
| 1009 | return ret; |
| 1010 | } |
| 1011 | |
| 1012 | /* This function cleans up the USB driver. |
| 1013 | * |
| 1014 | * The following major steps are followed in .disconnect for cleanup: |
| 1015 | * - Resume the device if its suspended |
| 1016 | * - Disconnect the device if connected |
| 1017 | * - Shutdown the firmware |
| 1018 | * - Unregister the device from USB bus. |
| 1019 | */ |
| 1020 | static void mwifiex_usb_cleanup_module(void) |
| 1021 | { |
| 1022 | if (!down_interruptible(&add_remove_card_sem)) |
| 1023 | up(&add_remove_card_sem); |
| 1024 | |
Ujjal Roy | 353d2a6 | 2013-11-14 19:10:42 -0800 | [diff] [blame] | 1025 | if (usb_card && usb_card->adapter) { |
Amitkumar Karwar | 027d330 | 2013-08-23 16:48:21 -0700 | [diff] [blame] | 1026 | struct mwifiex_adapter *adapter = usb_card->adapter; |
| 1027 | int i; |
| 1028 | |
| 1029 | /* In case driver is removed when asynchronous FW downloading is |
| 1030 | * in progress |
| 1031 | */ |
| 1032 | wait_for_completion(&adapter->fw_load); |
| 1033 | |
| 1034 | #ifdef CONFIG_PM |
| 1035 | if (adapter->is_suspended) |
| 1036 | mwifiex_usb_resume(usb_card->intf); |
| 1037 | #endif |
| 1038 | for (i = 0; i < adapter->priv_num; i++) |
| 1039 | if ((GET_BSS_ROLE(adapter->priv[i]) == |
| 1040 | MWIFIEX_BSS_ROLE_STA) && |
| 1041 | adapter->priv[i]->media_connected) |
| 1042 | mwifiex_deauthenticate(adapter->priv[i], NULL); |
| 1043 | |
| 1044 | mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter, |
| 1045 | MWIFIEX_BSS_ROLE_ANY), |
| 1046 | MWIFIEX_FUNC_SHUTDOWN); |
| 1047 | } |
Amitkumar Karwar | 4daffe3 | 2012-04-18 20:08:28 -0700 | [diff] [blame] | 1048 | |
| 1049 | usb_deregister(&mwifiex_usb_driver); |
| 1050 | } |
| 1051 | |
| 1052 | module_init(mwifiex_usb_init_module); |
| 1053 | module_exit(mwifiex_usb_cleanup_module); |
| 1054 | |
| 1055 | MODULE_AUTHOR("Marvell International Ltd."); |
| 1056 | MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION); |
| 1057 | MODULE_VERSION(USB_VERSION); |
| 1058 | MODULE_LICENSE("GPL v2"); |
Yogesh Ashok Powar | 68458de | 2014-01-09 19:36:55 -0800 | [diff] [blame] | 1059 | MODULE_FIRMWARE(USB8797_DEFAULT_FW_NAME); |
| 1060 | MODULE_FIRMWARE(USB8897_DEFAULT_FW_NAME); |