2 * Marvell Wireless LAN device driver: USB specific handling
4 * Copyright (C) 2012, Marvell International Ltd.
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.
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.
23 #define USB_VERSION "1.0"
25 static const char usbdriver_name
[] = "usb8797";
28 static struct mwifiex_if_ops usb_ops
;
29 static struct semaphore add_remove_card_sem
;
31 static struct usb_device_id mwifiex_usb_table
[] = {
32 {USB_DEVICE(USB8797_VID
, USB8797_PID_1
)},
33 {USB_DEVICE_AND_INTERFACE_INFO(USB8797_VID
, USB8797_PID_2
,
34 USB_CLASS_VENDOR_SPEC
,
35 USB_SUBCLASS_VENDOR_SPEC
, 0xff)},
36 { } /* Terminating entry */
39 MODULE_DEVICE_TABLE(usb
, mwifiex_usb_table
);
41 static int mwifiex_usb_submit_rx_urb(struct urb_context
*ctx
, int size
);
43 /* This function handles received packet. Necessary action is taken based on
46 static int mwifiex_usb_recv(struct mwifiex_adapter
*adapter
,
47 struct sk_buff
*skb
, u8 ep
)
49 struct device
*dev
= adapter
->dev
;
53 if (adapter
->hs_activated
)
54 mwifiex_process_hs_config(adapter
);
56 if (skb
->len
< INTF_HEADER_LEN
) {
57 dev_err(dev
, "%s: invalid skb->len\n", __func__
);
62 case MWIFIEX_USB_EP_CMD_EVENT
:
63 dev_dbg(dev
, "%s: EP_CMD_EVENT\n", __func__
);
64 skb_copy_from_linear_data(skb
, &tmp
, INTF_HEADER_LEN
);
65 recv_type
= le32_to_cpu(tmp
);
66 skb_pull(skb
, INTF_HEADER_LEN
);
69 case MWIFIEX_USB_TYPE_CMD
:
70 if (skb
->len
> MWIFIEX_SIZE_OF_CMD_BUFFER
) {
71 dev_err(dev
, "CMD: skb->len too large\n");
73 } else if (!adapter
->curr_cmd
) {
74 dev_dbg(dev
, "CMD: no curr_cmd\n");
75 if (adapter
->ps_state
== PS_STATE_SLEEP_CFM
) {
76 mwifiex_process_sleep_confirm_resp(
84 adapter
->curr_cmd
->resp_skb
= skb
;
85 adapter
->cmd_resp_received
= true;
87 case MWIFIEX_USB_TYPE_EVENT
:
88 if (skb
->len
< sizeof(u32
)) {
89 dev_err(dev
, "EVENT: skb->len too small\n");
92 skb_copy_from_linear_data(skb
, &tmp
, sizeof(u32
));
93 adapter
->event_cause
= le32_to_cpu(tmp
);
94 skb_pull(skb
, sizeof(u32
));
95 dev_dbg(dev
, "event_cause %#x\n", adapter
->event_cause
);
97 if (skb
->len
> MAX_EVENT_SIZE
) {
98 dev_err(dev
, "EVENT: event body too large\n");
102 skb_copy_from_linear_data(skb
, adapter
->event_body
,
104 adapter
->event_received
= true;
105 adapter
->event_skb
= skb
;
108 dev_err(dev
, "unknown recv_type %#x\n", recv_type
);
112 case MWIFIEX_USB_EP_DATA
:
113 dev_dbg(dev
, "%s: EP_DATA\n", __func__
);
114 if (skb
->len
> MWIFIEX_RX_DATA_BUF_SIZE
) {
115 dev_err(dev
, "DATA: skb->len too large\n");
118 skb_queue_tail(&adapter
->usb_rx_data_q
, skb
);
119 adapter
->data_received
= true;
122 dev_err(dev
, "%s: unknown endport %#x\n", __func__
, ep
);
129 static void mwifiex_usb_rx_complete(struct urb
*urb
)
131 struct urb_context
*context
= (struct urb_context
*)urb
->context
;
132 struct mwifiex_adapter
*adapter
= context
->adapter
;
133 struct sk_buff
*skb
= context
->skb
;
134 struct usb_card_rec
*card
;
135 int recv_length
= urb
->actual_length
;
138 if (!adapter
|| !adapter
->card
) {
139 pr_err("mwifiex adapter or card structure is not valid\n");
143 card
= (struct usb_card_rec
*)adapter
->card
;
144 if (card
->rx_cmd_ep
== context
->ep
)
145 atomic_dec(&card
->rx_cmd_urb_pending
);
147 atomic_dec(&card
->rx_data_urb_pending
);
150 if (urb
->status
|| (adapter
->surprise_removed
)) {
151 dev_err(adapter
->dev
,
152 "URB status is failed: %d\n", urb
->status
);
153 /* Do not free skb in case of command ep */
154 if (card
->rx_cmd_ep
!= context
->ep
)
155 dev_kfree_skb_any(skb
);
158 if (skb
->len
> recv_length
)
159 skb_trim(skb
, recv_length
);
161 skb_put(skb
, recv_length
- skb
->len
);
163 atomic_inc(&adapter
->rx_pending
);
164 status
= mwifiex_usb_recv(adapter
, skb
, context
->ep
);
166 dev_dbg(adapter
->dev
, "info: recv_length=%d, status=%d\n",
167 recv_length
, status
);
168 if (status
== -EINPROGRESS
) {
169 queue_work(adapter
->workqueue
, &adapter
->main_work
);
171 /* urb for data_ep is re-submitted now;
172 * urb for cmd_ep will be re-submitted in callback
173 * mwifiex_usb_recv_complete
175 if (card
->rx_cmd_ep
== context
->ep
)
178 atomic_dec(&adapter
->rx_pending
);
180 dev_err(adapter
->dev
,
181 "received data processing failed!\n");
183 /* Do not free skb in case of command ep */
184 if (card
->rx_cmd_ep
!= context
->ep
)
185 dev_kfree_skb_any(skb
);
187 } else if (urb
->status
) {
188 if (!adapter
->is_suspended
) {
189 dev_warn(adapter
->dev
,
190 "Card is removed: %d\n", urb
->status
);
191 adapter
->surprise_removed
= true;
193 dev_kfree_skb_any(skb
);
196 /* Do not free skb in case of command ep */
197 if (card
->rx_cmd_ep
!= context
->ep
)
198 dev_kfree_skb_any(skb
);
200 /* fall through setup_for_next */
204 if (card
->rx_cmd_ep
== context
->ep
)
205 size
= MWIFIEX_RX_CMD_BUF_SIZE
;
207 size
= MWIFIEX_RX_DATA_BUF_SIZE
;
209 mwifiex_usb_submit_rx_urb(context
, size
);
214 static void mwifiex_usb_tx_complete(struct urb
*urb
)
216 struct urb_context
*context
= (struct urb_context
*)(urb
->context
);
217 struct mwifiex_adapter
*adapter
= context
->adapter
;
218 struct usb_card_rec
*card
= adapter
->card
;
220 dev_dbg(adapter
->dev
, "%s: status: %d\n", __func__
, urb
->status
);
222 if (context
->ep
== card
->tx_cmd_ep
) {
223 dev_dbg(adapter
->dev
, "%s: CMD\n", __func__
);
224 atomic_dec(&card
->tx_cmd_urb_pending
);
225 adapter
->cmd_sent
= false;
227 dev_dbg(adapter
->dev
, "%s: DATA\n", __func__
);
228 atomic_dec(&card
->tx_data_urb_pending
);
229 mwifiex_write_data_complete(adapter
, context
->skb
,
230 urb
->status
? -1 : 0);
233 queue_work(adapter
->workqueue
, &adapter
->main_work
);
238 static int mwifiex_usb_submit_rx_urb(struct urb_context
*ctx
, int size
)
240 struct mwifiex_adapter
*adapter
= ctx
->adapter
;
241 struct usb_card_rec
*card
= (struct usb_card_rec
*)adapter
->card
;
243 if (card
->rx_cmd_ep
!= ctx
->ep
) {
244 ctx
->skb
= dev_alloc_skb(size
);
246 dev_err(adapter
->dev
,
247 "%s: dev_alloc_skb failed\n", __func__
);
252 usb_fill_bulk_urb(ctx
->urb
, card
->udev
,
253 usb_rcvbulkpipe(card
->udev
, ctx
->ep
), ctx
->skb
->data
,
254 size
, mwifiex_usb_rx_complete
, (void *)ctx
);
256 if (card
->rx_cmd_ep
== ctx
->ep
)
257 atomic_inc(&card
->rx_cmd_urb_pending
);
259 atomic_inc(&card
->rx_data_urb_pending
);
261 if (usb_submit_urb(ctx
->urb
, GFP_ATOMIC
)) {
262 dev_err(adapter
->dev
, "usb_submit_urb failed\n");
263 dev_kfree_skb_any(ctx
->skb
);
266 if (card
->rx_cmd_ep
== ctx
->ep
)
267 atomic_dec(&card
->rx_cmd_urb_pending
);
269 atomic_dec(&card
->rx_data_urb_pending
);
277 static void mwifiex_usb_free(struct usb_card_rec
*card
)
281 if (atomic_read(&card
->rx_cmd_urb_pending
) && card
->rx_cmd
.urb
)
282 usb_kill_urb(card
->rx_cmd
.urb
);
284 usb_free_urb(card
->rx_cmd
.urb
);
285 card
->rx_cmd
.urb
= NULL
;
287 if (atomic_read(&card
->rx_data_urb_pending
))
288 for (i
= 0; i
< MWIFIEX_RX_DATA_URB
; i
++)
289 if (card
->rx_data_list
[i
].urb
)
290 usb_kill_urb(card
->rx_data_list
[i
].urb
);
292 for (i
= 0; i
< MWIFIEX_RX_DATA_URB
; i
++) {
293 usb_free_urb(card
->rx_data_list
[i
].urb
);
294 card
->rx_data_list
[i
].urb
= NULL
;
297 for (i
= 0; i
< MWIFIEX_TX_DATA_URB
; i
++) {
298 usb_free_urb(card
->tx_data_list
[i
].urb
);
299 card
->tx_data_list
[i
].urb
= NULL
;
302 usb_free_urb(card
->tx_cmd
.urb
);
303 card
->tx_cmd
.urb
= NULL
;
308 /* This function probes an mwifiex device and registers it. It allocates
309 * the card structure, initiates the device registration and initialization
310 * procedure by adding a logical interface.
312 static int mwifiex_usb_probe(struct usb_interface
*intf
,
313 const struct usb_device_id
*id
)
315 struct usb_device
*udev
= interface_to_usbdev(intf
);
316 struct usb_host_interface
*iface_desc
= intf
->cur_altsetting
;
317 struct usb_endpoint_descriptor
*epd
;
319 struct usb_card_rec
*card
;
320 u16 id_vendor
, id_product
, bcd_device
, bcd_usb
;
322 card
= kzalloc(sizeof(struct usb_card_rec
), GFP_KERNEL
);
326 id_vendor
= le16_to_cpu(udev
->descriptor
.idVendor
);
327 id_product
= le16_to_cpu(udev
->descriptor
.idProduct
);
328 bcd_device
= le16_to_cpu(udev
->descriptor
.bcdDevice
);
329 bcd_usb
= le16_to_cpu(udev
->descriptor
.bcdUSB
);
330 pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n",
331 id_vendor
, id_product
, bcd_device
);
333 /* PID_1 is used for firmware downloading only */
334 if (id_product
== USB8797_PID_1
)
335 card
->usb_boot_state
= USB8797_FW_DNLD
;
337 card
->usb_boot_state
= USB8797_FW_READY
;
342 pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocl=%#x\n",
343 udev
->descriptor
.bcdUSB
, udev
->descriptor
.bDeviceClass
,
344 udev
->descriptor
.bDeviceSubClass
,
345 udev
->descriptor
.bDeviceProtocol
);
347 for (i
= 0; i
< iface_desc
->desc
.bNumEndpoints
; ++i
) {
348 epd
= &iface_desc
->endpoint
[i
].desc
;
349 if (usb_endpoint_dir_in(epd
) &&
350 usb_endpoint_num(epd
) == MWIFIEX_USB_EP_CMD_EVENT
&&
351 usb_endpoint_xfer_bulk(epd
)) {
352 pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
353 le16_to_cpu(epd
->wMaxPacketSize
),
354 epd
->bEndpointAddress
);
355 card
->rx_cmd_ep
= usb_endpoint_num(epd
);
356 atomic_set(&card
->rx_cmd_urb_pending
, 0);
358 if (usb_endpoint_dir_in(epd
) &&
359 usb_endpoint_num(epd
) == MWIFIEX_USB_EP_DATA
&&
360 usb_endpoint_xfer_bulk(epd
)) {
361 pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
362 le16_to_cpu(epd
->wMaxPacketSize
),
363 epd
->bEndpointAddress
);
364 card
->rx_data_ep
= usb_endpoint_num(epd
);
365 atomic_set(&card
->rx_data_urb_pending
, 0);
367 if (usb_endpoint_dir_out(epd
) &&
368 usb_endpoint_num(epd
) == MWIFIEX_USB_EP_DATA
&&
369 usb_endpoint_xfer_bulk(epd
)) {
370 pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
371 le16_to_cpu(epd
->wMaxPacketSize
),
372 epd
->bEndpointAddress
);
373 card
->tx_data_ep
= usb_endpoint_num(epd
);
374 atomic_set(&card
->tx_data_urb_pending
, 0);
376 if (usb_endpoint_dir_out(epd
) &&
377 usb_endpoint_num(epd
) == MWIFIEX_USB_EP_CMD_EVENT
&&
378 usb_endpoint_xfer_bulk(epd
)) {
379 pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
380 le16_to_cpu(epd
->wMaxPacketSize
),
381 epd
->bEndpointAddress
);
382 card
->tx_cmd_ep
= usb_endpoint_num(epd
);
383 atomic_set(&card
->tx_cmd_urb_pending
, 0);
384 card
->bulk_out_maxpktsize
=
385 le16_to_cpu(epd
->wMaxPacketSize
);
389 usb_set_intfdata(intf
, card
);
391 ret
= mwifiex_add_card(card
, &add_remove_card_sem
, &usb_ops
,
394 pr_err("%s: mwifiex_add_card failed: %d\n", __func__
, ret
);
395 usb_reset_device(udev
);
405 /* Kernel needs to suspend all functions separately. Therefore all
406 * registered functions must have drivers with suspend and resume
407 * methods. Failing that the kernel simply removes the whole card.
409 * If already not suspended, this function allocates and sends a
410 * 'host sleep activate' request to the firmware and turns off the traffic.
412 static int mwifiex_usb_suspend(struct usb_interface
*intf
, pm_message_t message
)
414 struct usb_card_rec
*card
= usb_get_intfdata(intf
);
415 struct mwifiex_adapter
*adapter
;
418 if (!card
|| !card
->adapter
) {
419 pr_err("%s: card or card->adapter is NULL\n", __func__
);
422 adapter
= card
->adapter
;
424 if (unlikely(adapter
->is_suspended
))
425 dev_warn(adapter
->dev
, "Device already suspended\n");
427 mwifiex_enable_hs(adapter
);
429 /* 'is_suspended' flag indicates device is suspended.
430 * It must be set here before the usb_kill_urb() calls. Reason
431 * is in the complete handlers, urb->status(= -ENOENT) and
432 * this flag is used in combination to distinguish between a
433 * 'suspended' state and a 'disconnect' one.
435 adapter
->is_suspended
= true;
437 for (i
= 0; i
< adapter
->priv_num
; i
++)
438 netif_carrier_off(adapter
->priv
[i
]->netdev
);
440 if (atomic_read(&card
->rx_cmd_urb_pending
) && card
->rx_cmd
.urb
)
441 usb_kill_urb(card
->rx_cmd
.urb
);
443 if (atomic_read(&card
->rx_data_urb_pending
))
444 for (i
= 0; i
< MWIFIEX_RX_DATA_URB
; i
++)
445 if (card
->rx_data_list
[i
].urb
)
446 usb_kill_urb(card
->rx_data_list
[i
].urb
);
448 for (i
= 0; i
< MWIFIEX_TX_DATA_URB
; i
++)
449 if (card
->tx_data_list
[i
].urb
)
450 usb_kill_urb(card
->tx_data_list
[i
].urb
);
452 if (card
->tx_cmd
.urb
)
453 usb_kill_urb(card
->tx_cmd
.urb
);
458 /* Kernel needs to suspend all functions separately. Therefore all
459 * registered functions must have drivers with suspend and resume
460 * methods. Failing that the kernel simply removes the whole card.
462 * If already not resumed, this function turns on the traffic and
463 * sends a 'host sleep cancel' request to the firmware.
465 static int mwifiex_usb_resume(struct usb_interface
*intf
)
467 struct usb_card_rec
*card
= usb_get_intfdata(intf
);
468 struct mwifiex_adapter
*adapter
;
471 if (!card
|| !card
->adapter
) {
472 pr_err("%s: card or card->adapter is NULL\n", __func__
);
475 adapter
= card
->adapter
;
477 if (unlikely(!adapter
->is_suspended
)) {
478 dev_warn(adapter
->dev
, "Device already resumed\n");
482 /* Indicate device resumed. The netdev queue will be resumed only
483 * after the urbs have been re-submitted
485 adapter
->is_suspended
= false;
487 if (!atomic_read(&card
->rx_data_urb_pending
))
488 for (i
= 0; i
< MWIFIEX_RX_DATA_URB
; i
++)
489 mwifiex_usb_submit_rx_urb(&card
->rx_data_list
[i
],
490 MWIFIEX_RX_DATA_BUF_SIZE
);
492 if (!atomic_read(&card
->rx_cmd_urb_pending
)) {
493 card
->rx_cmd
.skb
= dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE
);
494 if (card
->rx_cmd
.skb
)
495 mwifiex_usb_submit_rx_urb(&card
->rx_cmd
,
496 MWIFIEX_RX_CMD_BUF_SIZE
);
499 for (i
= 0; i
< adapter
->priv_num
; i
++)
500 if (adapter
->priv
[i
]->media_connected
)
501 netif_carrier_on(adapter
->priv
[i
]->netdev
);
503 /* Disable Host Sleep */
504 if (adapter
->hs_activated
)
505 mwifiex_cancel_hs(mwifiex_get_priv(adapter
,
506 MWIFIEX_BSS_ROLE_ANY
),
510 /* Resume handler may be called due to remote wakeup,
511 * force to exit suspend anyway
513 usb_disable_autosuspend(card
->udev
);
514 #endif /* CONFIG_PM */
519 static void mwifiex_usb_disconnect(struct usb_interface
*intf
)
521 struct usb_card_rec
*card
= usb_get_intfdata(intf
);
522 struct mwifiex_adapter
*adapter
;
525 if (!card
|| !card
->adapter
) {
526 pr_err("%s: card or card->adapter is NULL\n", __func__
);
530 adapter
= card
->adapter
;
531 if (!adapter
->priv_num
)
534 /* In case driver is removed when asynchronous FW downloading is
537 wait_for_completion(&adapter
->fw_load
);
541 if (adapter
->is_suspended
)
542 mwifiex_usb_resume(intf
);
544 for (i
= 0; i
< adapter
->priv_num
; i
++)
545 if ((GET_BSS_ROLE(adapter
->priv
[i
]) ==
546 MWIFIEX_BSS_ROLE_STA
) &&
547 adapter
->priv
[i
]->media_connected
)
548 mwifiex_deauthenticate(adapter
->priv
[i
], NULL
);
550 mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter
,
551 MWIFIEX_BSS_ROLE_ANY
),
552 MWIFIEX_FUNC_SHUTDOWN
);
555 mwifiex_usb_free(card
);
557 dev_dbg(adapter
->dev
, "%s: removing card\n", __func__
);
558 mwifiex_remove_card(adapter
, &add_remove_card_sem
);
560 usb_set_intfdata(intf
, NULL
);
561 usb_put_dev(interface_to_usbdev(intf
));
567 static struct usb_driver mwifiex_usb_driver
= {
568 .name
= usbdriver_name
,
569 .probe
= mwifiex_usb_probe
,
570 .disconnect
= mwifiex_usb_disconnect
,
571 .id_table
= mwifiex_usb_table
,
572 .suspend
= mwifiex_usb_suspend
,
573 .resume
= mwifiex_usb_resume
,
574 .supports_autosuspend
= 1,
577 static int mwifiex_usb_tx_init(struct mwifiex_adapter
*adapter
)
579 struct usb_card_rec
*card
= (struct usb_card_rec
*)adapter
->card
;
582 card
->tx_cmd
.adapter
= adapter
;
583 card
->tx_cmd
.ep
= card
->tx_cmd_ep
;
585 card
->tx_cmd
.urb
= usb_alloc_urb(0, GFP_KERNEL
);
586 if (!card
->tx_cmd
.urb
) {
587 dev_err(adapter
->dev
, "tx_cmd.urb allocation failed\n");
591 card
->tx_data_ix
= 0;
593 for (i
= 0; i
< MWIFIEX_TX_DATA_URB
; i
++) {
594 card
->tx_data_list
[i
].adapter
= adapter
;
595 card
->tx_data_list
[i
].ep
= card
->tx_data_ep
;
597 card
->tx_data_list
[i
].urb
= usb_alloc_urb(0, GFP_KERNEL
);
598 if (!card
->tx_data_list
[i
].urb
) {
599 dev_err(adapter
->dev
,
600 "tx_data_list[] urb allocation failed\n");
608 static int mwifiex_usb_rx_init(struct mwifiex_adapter
*adapter
)
610 struct usb_card_rec
*card
= (struct usb_card_rec
*)adapter
->card
;
613 card
->rx_cmd
.adapter
= adapter
;
614 card
->rx_cmd
.ep
= card
->rx_cmd_ep
;
616 card
->rx_cmd
.urb
= usb_alloc_urb(0, GFP_KERNEL
);
617 if (!card
->rx_cmd
.urb
) {
618 dev_err(adapter
->dev
, "rx_cmd.urb allocation failed\n");
622 card
->rx_cmd
.skb
= dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE
);
623 if (!card
->rx_cmd
.skb
) {
624 dev_err(adapter
->dev
, "rx_cmd.skb allocation failed\n");
628 if (mwifiex_usb_submit_rx_urb(&card
->rx_cmd
, MWIFIEX_RX_CMD_BUF_SIZE
))
631 for (i
= 0; i
< MWIFIEX_RX_DATA_URB
; i
++) {
632 card
->rx_data_list
[i
].adapter
= adapter
;
633 card
->rx_data_list
[i
].ep
= card
->rx_data_ep
;
635 card
->rx_data_list
[i
].urb
= usb_alloc_urb(0, GFP_KERNEL
);
636 if (!card
->rx_data_list
[i
].urb
) {
637 dev_err(adapter
->dev
,
638 "rx_data_list[] urb allocation failed\n");
641 if (mwifiex_usb_submit_rx_urb(&card
->rx_data_list
[i
],
642 MWIFIEX_RX_DATA_BUF_SIZE
))
649 static int mwifiex_write_data_sync(struct mwifiex_adapter
*adapter
, u8
*pbuf
,
650 u32
*len
, u8 ep
, u32 timeout
)
652 struct usb_card_rec
*card
= adapter
->card
;
653 int actual_length
, ret
;
655 if (!(*len
% card
->bulk_out_maxpktsize
))
658 /* Send the data block */
659 ret
= usb_bulk_msg(card
->udev
, usb_sndbulkpipe(card
->udev
, ep
), pbuf
,
660 *len
, &actual_length
, timeout
);
662 dev_err(adapter
->dev
, "usb_bulk_msg for tx failed: %d\n", ret
);
666 *len
= actual_length
;
671 static int mwifiex_read_data_sync(struct mwifiex_adapter
*adapter
, u8
*pbuf
,
672 u32
*len
, u8 ep
, u32 timeout
)
674 struct usb_card_rec
*card
= adapter
->card
;
675 int actual_length
, ret
;
677 /* Receive the data response */
678 ret
= usb_bulk_msg(card
->udev
, usb_rcvbulkpipe(card
->udev
, ep
), pbuf
,
679 *len
, &actual_length
, timeout
);
681 dev_err(adapter
->dev
, "usb_bulk_msg for rx failed: %d\n", ret
);
685 *len
= actual_length
;
690 /* This function write a command/data packet to card. */
691 static int mwifiex_usb_host_to_card(struct mwifiex_adapter
*adapter
, u8 ep
,
693 struct mwifiex_tx_param
*tx_param
)
695 struct usb_card_rec
*card
= adapter
->card
;
696 struct urb_context
*context
;
697 u8
*data
= (u8
*)skb
->data
;
700 if (adapter
->is_suspended
) {
701 dev_err(adapter
->dev
,
702 "%s: not allowed while suspended\n", __func__
);
706 if (adapter
->surprise_removed
) {
707 dev_err(adapter
->dev
, "%s: device removed\n", __func__
);
711 if (ep
== card
->tx_data_ep
&&
712 atomic_read(&card
->tx_data_urb_pending
) >= MWIFIEX_TX_DATA_URB
) {
716 dev_dbg(adapter
->dev
, "%s: ep=%d\n", __func__
, ep
);
718 if (ep
== card
->tx_cmd_ep
) {
719 context
= &card
->tx_cmd
;
721 if (card
->tx_data_ix
>= MWIFIEX_TX_DATA_URB
)
722 card
->tx_data_ix
= 0;
723 context
= &card
->tx_data_list
[card
->tx_data_ix
++];
726 context
->adapter
= adapter
;
729 tx_urb
= context
->urb
;
731 usb_fill_bulk_urb(tx_urb
, card
->udev
, usb_sndbulkpipe(card
->udev
, ep
),
732 data
, skb
->len
, mwifiex_usb_tx_complete
,
735 tx_urb
->transfer_flags
|= URB_ZERO_PACKET
;
737 if (ep
== card
->tx_cmd_ep
)
738 atomic_inc(&card
->tx_cmd_urb_pending
);
740 atomic_inc(&card
->tx_data_urb_pending
);
742 if (usb_submit_urb(tx_urb
, GFP_ATOMIC
)) {
743 dev_err(adapter
->dev
, "%s: usb_submit_urb failed\n", __func__
);
744 if (ep
== card
->tx_cmd_ep
) {
745 atomic_dec(&card
->tx_cmd_urb_pending
);
747 atomic_dec(&card
->tx_data_urb_pending
);
748 if (card
->tx_data_ix
)
751 card
->tx_data_ix
= MWIFIEX_TX_DATA_URB
;
756 if (ep
== card
->tx_data_ep
&&
757 atomic_read(&card
->tx_data_urb_pending
) ==
765 /* This function register usb device and initialize parameter. */
766 static int mwifiex_register_dev(struct mwifiex_adapter
*adapter
)
768 struct usb_card_rec
*card
= (struct usb_card_rec
*)adapter
->card
;
770 card
->adapter
= adapter
;
771 adapter
->dev
= &card
->udev
->dev
;
772 strcpy(adapter
->fw_name
, USB8797_DEFAULT_FW_NAME
);
777 /* This function reads one block of firmware data. */
778 static int mwifiex_get_fw_data(struct mwifiex_adapter
*adapter
,
779 u32 offset
, u32 len
, u8
*buf
)
784 if (offset
+ len
> adapter
->firmware
->size
)
787 memcpy(buf
, adapter
->firmware
->data
+ offset
, len
);
792 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter
*adapter
,
793 struct mwifiex_fw_image
*fw
)
796 u8
*firmware
= fw
->fw_buf
, *recv_buff
;
797 u32 retries
= USB8797_FW_MAX_RETRY
, dlen
;
798 u32 fw_seqnum
= 0, tlen
= 0, dnld_cmd
= 0;
799 struct fw_data
*fwdata
;
800 struct fw_sync_header sync_fw
;
804 dev_err(adapter
->dev
,
805 "No firmware image found! Terminating download\n");
810 /* Allocate memory for transmit */
811 fwdata
= kzalloc(FW_DNLD_TX_BUF_SIZE
, GFP_KERNEL
);
815 /* Allocate memory for receive */
816 recv_buff
= kzalloc(FW_DNLD_RX_BUF_SIZE
, GFP_KERNEL
);
821 /* Send pseudo data to check winner status first */
823 memset(&fwdata
->fw_hdr
, 0, sizeof(struct fw_header
));
826 /* copy the header of the fw_data to get the length */
828 memcpy(&fwdata
->fw_hdr
, &firmware
[tlen
],
829 sizeof(struct fw_header
));
831 mwifiex_get_fw_data(adapter
, tlen
,
832 sizeof(struct fw_header
),
833 (u8
*)&fwdata
->fw_hdr
);
835 dlen
= le32_to_cpu(fwdata
->fw_hdr
.data_len
);
836 dnld_cmd
= le32_to_cpu(fwdata
->fw_hdr
.dnld_cmd
);
837 tlen
+= sizeof(struct fw_header
);
840 memcpy(fwdata
->data
, &firmware
[tlen
], dlen
);
842 mwifiex_get_fw_data(adapter
, tlen
, dlen
,
845 fwdata
->seq_num
= cpu_to_le32(fw_seqnum
);
849 /* If the send/receive fails or CRC occurs then retry */
851 u8
*buf
= (u8
*)fwdata
;
852 u32 len
= FW_DATA_XMIT_SIZE
;
854 /* send the firmware block */
855 ret
= mwifiex_write_data_sync(adapter
, buf
, &len
,
856 MWIFIEX_USB_EP_CMD_EVENT
,
857 MWIFIEX_USB_TIMEOUT
);
859 dev_err(adapter
->dev
,
860 "write_data_sync: failed: %d\n", ret
);
865 len
= FW_DNLD_RX_BUF_SIZE
;
867 /* Receive the firmware block response */
868 ret
= mwifiex_read_data_sync(adapter
, buf
, &len
,
869 MWIFIEX_USB_EP_CMD_EVENT
,
870 MWIFIEX_USB_TIMEOUT
);
872 dev_err(adapter
->dev
,
873 "read_data_sync: failed: %d\n", ret
);
877 memcpy(&sync_fw
, recv_buff
,
878 sizeof(struct fw_sync_header
));
880 /* check 1st firmware block resp for highest bit set */
882 if (le32_to_cpu(sync_fw
.cmd
) & 0x80000000) {
883 dev_warn(adapter
->dev
,
884 "USB is not the winner %#x\n",
887 /* returning success */
892 dev_dbg(adapter
->dev
,
893 "USB is the winner, start to download FW\n");
899 /* check the firmware block response for CRC errors */
901 dev_err(adapter
->dev
,
902 "FW received block with CRC %#x\n",
908 retries
= USB8797_FW_MAX_RETRY
;
912 } while ((dnld_cmd
!= FW_HAS_LAST_BLOCK
) && retries
);
915 dev_dbg(adapter
->dev
, "%s: %d bytes downloaded\n", __func__
, tlen
);
926 static int mwifiex_usb_dnld_fw(struct mwifiex_adapter
*adapter
,
927 struct mwifiex_fw_image
*fw
)
930 struct usb_card_rec
*card
= (struct usb_card_rec
*)adapter
->card
;
932 if (card
->usb_boot_state
== USB8797_FW_DNLD
) {
933 ret
= mwifiex_prog_fw_w_helper(adapter
, fw
);
937 /* Boot state changes after successful firmware download */
938 if (card
->usb_boot_state
== USB8797_FW_DNLD
)
942 ret
= mwifiex_usb_rx_init(adapter
);
944 ret
= mwifiex_usb_tx_init(adapter
);
949 static void mwifiex_submit_rx_urb(struct mwifiex_adapter
*adapter
, u8 ep
)
951 struct usb_card_rec
*card
= (struct usb_card_rec
*)adapter
->card
;
953 skb_push(card
->rx_cmd
.skb
, INTF_HEADER_LEN
);
954 if ((ep
== card
->rx_cmd_ep
) &&
955 (!atomic_read(&card
->rx_cmd_urb_pending
)))
956 mwifiex_usb_submit_rx_urb(&card
->rx_cmd
,
957 MWIFIEX_RX_CMD_BUF_SIZE
);
962 static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter
*adapter
,
965 atomic_dec(&adapter
->rx_pending
);
966 mwifiex_submit_rx_urb(adapter
, MWIFIEX_USB_EP_CMD_EVENT
);
971 static int mwifiex_usb_data_complete(struct mwifiex_adapter
*adapter
,
974 atomic_dec(&adapter
->rx_pending
);
975 dev_kfree_skb_any(skb
);
980 /* This function wakes up the card. */
981 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter
*adapter
)
983 /* Simulation of HS_AWAKE event */
984 adapter
->pm_wakeup_fw_try
= false;
985 adapter
->pm_wakeup_card_req
= false;
986 adapter
->ps_state
= PS_STATE_AWAKE
;
991 static struct mwifiex_if_ops usb_ops
= {
992 .register_dev
= mwifiex_register_dev
,
993 .wakeup
= mwifiex_pm_wakeup_card
,
994 .wakeup_complete
= mwifiex_pm_wakeup_card_complete
,
997 .dnld_fw
= mwifiex_usb_dnld_fw
,
998 .cmdrsp_complete
= mwifiex_usb_cmd_event_complete
,
999 .event_complete
= mwifiex_usb_cmd_event_complete
,
1000 .data_complete
= mwifiex_usb_data_complete
,
1001 .host_to_card
= mwifiex_usb_host_to_card
,
1004 /* This function initializes the USB driver module.
1006 * This initiates the semaphore and registers the device with
1009 static int mwifiex_usb_init_module(void)
1013 pr_debug("Marvell USB8797 Driver\n");
1015 sema_init(&add_remove_card_sem
, 1);
1017 ret
= usb_register(&mwifiex_usb_driver
);
1019 pr_err("Driver register failed!\n");
1021 pr_debug("info: Driver registered successfully!\n");
1026 /* This function cleans up the USB driver.
1028 * The following major steps are followed in .disconnect for cleanup:
1029 * - Resume the device if its suspended
1030 * - Disconnect the device if connected
1031 * - Shutdown the firmware
1032 * - Unregister the device from USB bus.
1034 static void mwifiex_usb_cleanup_module(void)
1036 if (!down_interruptible(&add_remove_card_sem
))
1037 up(&add_remove_card_sem
);
1039 /* set the flag as user is removing this module */
1042 usb_deregister(&mwifiex_usb_driver
);
1045 module_init(mwifiex_usb_init_module
);
1046 module_exit(mwifiex_usb_cleanup_module
);
1048 MODULE_AUTHOR("Marvell International Ltd.");
1049 MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION
);
1050 MODULE_VERSION(USB_VERSION
);
1051 MODULE_LICENSE("GPL v2");
1052 MODULE_FIRMWARE("mrvl/usb8797_uapsta.bin");