1 /* Copyright (c) 2014 Broadcom Corporation
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 /*******************************************************************************
17 * Communicates with the dongle by using dcmd codes.
18 * For certain dcmd codes, the dongle interprets string data from the host.
19 ******************************************************************************/
21 #include <linux/types.h>
22 #include <linux/netdevice.h>
23 #include <linux/etherdevice.h>
25 #include <brcmu_utils.h>
26 #include <brcmu_wifi.h>
32 #include "commonring.h"
35 #include "tracepoint.h"
38 #define MSGBUF_IOCTL_RESP_TIMEOUT msecs_to_jiffies(2000)
40 #define MSGBUF_TYPE_GEN_STATUS 0x1
41 #define MSGBUF_TYPE_RING_STATUS 0x2
42 #define MSGBUF_TYPE_FLOW_RING_CREATE 0x3
43 #define MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT 0x4
44 #define MSGBUF_TYPE_FLOW_RING_DELETE 0x5
45 #define MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT 0x6
46 #define MSGBUF_TYPE_FLOW_RING_FLUSH 0x7
47 #define MSGBUF_TYPE_FLOW_RING_FLUSH_CMPLT 0x8
48 #define MSGBUF_TYPE_IOCTLPTR_REQ 0x9
49 #define MSGBUF_TYPE_IOCTLPTR_REQ_ACK 0xA
50 #define MSGBUF_TYPE_IOCTLRESP_BUF_POST 0xB
51 #define MSGBUF_TYPE_IOCTL_CMPLT 0xC
52 #define MSGBUF_TYPE_EVENT_BUF_POST 0xD
53 #define MSGBUF_TYPE_WL_EVENT 0xE
54 #define MSGBUF_TYPE_TX_POST 0xF
55 #define MSGBUF_TYPE_TX_STATUS 0x10
56 #define MSGBUF_TYPE_RXBUF_POST 0x11
57 #define MSGBUF_TYPE_RX_CMPLT 0x12
58 #define MSGBUF_TYPE_LPBK_DMAXFER 0x13
59 #define MSGBUF_TYPE_LPBK_DMAXFER_CMPLT 0x14
61 #define NR_TX_PKTIDS 2048
62 #define NR_RX_PKTIDS 1024
64 #define BRCMF_IOCTL_REQ_PKTID 0xFFFE
66 #define BRCMF_MSGBUF_MAX_PKT_SIZE 2048
67 #define BRCMF_MSGBUF_RXBUFPOST_THRESHOLD 32
68 #define BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST 8
69 #define BRCMF_MSGBUF_MAX_EVENTBUF_POST 8
71 #define BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3 0x01
72 #define BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT 5
74 #define BRCMF_MSGBUF_TX_FLUSH_CNT1 32
75 #define BRCMF_MSGBUF_TX_FLUSH_CNT2 96
77 #define BRCMF_MSGBUF_DELAY_TXWORKER_THRS 96
78 #define BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS 32
79 #define BRCMF_MSGBUF_UPDATE_RX_PTR_THRS 48
82 struct msgbuf_common_hdr {
90 struct msgbuf_buf_addr {
95 struct msgbuf_ioctl_req_hdr {
96 struct msgbuf_common_hdr msg;
100 __le16 output_buf_len;
102 struct msgbuf_buf_addr req_buf_addr;
106 struct msgbuf_tx_msghdr {
107 struct msgbuf_common_hdr msg;
111 struct msgbuf_buf_addr metadata_buf_addr;
112 struct msgbuf_buf_addr data_buf_addr;
113 __le16 metadata_buf_len;
118 struct msgbuf_rx_bufpost {
119 struct msgbuf_common_hdr msg;
120 __le16 metadata_buf_len;
123 struct msgbuf_buf_addr metadata_buf_addr;
124 struct msgbuf_buf_addr data_buf_addr;
127 struct msgbuf_rx_ioctl_resp_or_event {
128 struct msgbuf_common_hdr msg;
131 struct msgbuf_buf_addr host_buf_addr;
135 struct msgbuf_completion_hdr {
140 struct msgbuf_rx_event {
141 struct msgbuf_common_hdr msg;
142 struct msgbuf_completion_hdr compl_hdr;
143 __le16 event_data_len;
148 struct msgbuf_ioctl_resp_hdr {
149 struct msgbuf_common_hdr msg;
150 struct msgbuf_completion_hdr compl_hdr;
157 struct msgbuf_tx_status {
158 struct msgbuf_common_hdr msg;
159 struct msgbuf_completion_hdr compl_hdr;
164 struct msgbuf_rx_complete {
165 struct msgbuf_common_hdr msg;
166 struct msgbuf_completion_hdr compl_hdr;
176 struct msgbuf_tx_flowring_create_req {
177 struct msgbuf_common_hdr msg;
188 struct msgbuf_buf_addr flow_ring_addr;
191 struct msgbuf_tx_flowring_delete_req {
192 struct msgbuf_common_hdr msg;
198 struct msgbuf_flowring_create_resp {
199 struct msgbuf_common_hdr msg;
200 struct msgbuf_completion_hdr compl_hdr;
204 struct msgbuf_flowring_delete_resp {
205 struct msgbuf_common_hdr msg;
206 struct msgbuf_completion_hdr compl_hdr;
210 struct msgbuf_flowring_flush_resp {
211 struct msgbuf_common_hdr msg;
212 struct msgbuf_completion_hdr compl_hdr;
216 struct brcmf_msgbuf_work_item {
217 struct list_head queue;
224 struct brcmf_msgbuf {
225 struct brcmf_pub *drvr;
227 struct brcmf_commonring **commonrings;
228 struct brcmf_commonring **flowrings;
229 dma_addr_t *flowring_dma_handle;
234 u16 rx_metadata_offset;
237 u32 max_ioctlrespbuf;
238 u32 cur_ioctlrespbuf;
243 dma_addr_t ioctbuf_handle;
246 int ioctl_resp_status;
247 u32 ioctl_resp_ret_len;
248 u32 ioctl_resp_pktid;
253 wait_queue_head_t ioctl_resp_wait;
256 struct brcmf_msgbuf_pktids *tx_pktids;
257 struct brcmf_msgbuf_pktids *rx_pktids;
258 struct brcmf_flowring *flow;
260 struct workqueue_struct *txflow_wq;
261 struct work_struct txflow_work;
262 unsigned long *flow_map;
263 unsigned long *txstatus_done_map;
265 struct work_struct flowring_work;
266 spinlock_t flowring_work_lock;
267 struct list_head work_queue;
270 struct brcmf_msgbuf_pktid {
277 struct brcmf_msgbuf_pktids {
279 u32 last_allocated_idx;
280 enum dma_data_direction direction;
281 struct brcmf_msgbuf_pktid *array;
284 static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf);
287 static struct brcmf_msgbuf_pktids *
288 brcmf_msgbuf_init_pktids(u32 nr_array_entries,
289 enum dma_data_direction direction)
291 struct brcmf_msgbuf_pktid *array;
292 struct brcmf_msgbuf_pktids *pktids;
294 array = kcalloc(nr_array_entries, sizeof(*array), GFP_KERNEL);
298 pktids = kzalloc(sizeof(*pktids), GFP_KERNEL);
303 pktids->array = array;
304 pktids->array_size = nr_array_entries;
311 brcmf_msgbuf_alloc_pktid(struct device *dev,
312 struct brcmf_msgbuf_pktids *pktids,
313 struct sk_buff *skb, u16 data_offset,
314 dma_addr_t *physaddr, u32 *idx)
316 struct brcmf_msgbuf_pktid *array;
319 array = pktids->array;
321 *physaddr = dma_map_single(dev, skb->data + data_offset,
322 skb->len - data_offset, pktids->direction);
324 if (dma_mapping_error(dev, *physaddr)) {
325 brcmf_err("dma_map_single failed !!\n");
329 *idx = pktids->last_allocated_idx;
334 if (*idx == pktids->array_size)
336 if (array[*idx].allocated.counter == 0)
337 if (atomic_cmpxchg(&array[*idx].allocated, 0, 1) == 0)
340 } while (count < pktids->array_size);
342 if (count == pktids->array_size)
345 array[*idx].data_offset = data_offset;
346 array[*idx].physaddr = *physaddr;
347 array[*idx].skb = skb;
349 pktids->last_allocated_idx = *idx;
355 static struct sk_buff *
356 brcmf_msgbuf_get_pktid(struct device *dev, struct brcmf_msgbuf_pktids *pktids,
359 struct brcmf_msgbuf_pktid *pktid;
362 if (idx >= pktids->array_size) {
363 brcmf_err("Invalid packet id %d (max %d)\n", idx,
367 if (pktids->array[idx].allocated.counter) {
368 pktid = &pktids->array[idx];
369 dma_unmap_single(dev, pktid->physaddr,
370 pktid->skb->len - pktid->data_offset,
373 pktid->allocated.counter = 0;
376 brcmf_err("Invalid packet id %d (not in use)\n", idx);
384 brcmf_msgbuf_release_array(struct device *dev,
385 struct brcmf_msgbuf_pktids *pktids)
387 struct brcmf_msgbuf_pktid *array;
388 struct brcmf_msgbuf_pktid *pktid;
391 array = pktids->array;
394 if (array[count].allocated.counter) {
395 pktid = &array[count];
396 dma_unmap_single(dev, pktid->physaddr,
397 pktid->skb->len - pktid->data_offset,
399 brcmu_pkt_buf_free_skb(pktid->skb);
402 } while (count < pktids->array_size);
409 static void brcmf_msgbuf_release_pktids(struct brcmf_msgbuf *msgbuf)
411 if (msgbuf->rx_pktids)
412 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
414 if (msgbuf->tx_pktids)
415 brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
420 static int brcmf_msgbuf_tx_ioctl(struct brcmf_pub *drvr, int ifidx,
421 uint cmd, void *buf, uint len)
423 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
424 struct brcmf_commonring *commonring;
425 struct msgbuf_ioctl_req_hdr *request;
430 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
431 brcmf_commonring_lock(commonring);
432 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
434 brcmf_err("Failed to reserve space in commonring\n");
435 brcmf_commonring_unlock(commonring);
441 request = (struct msgbuf_ioctl_req_hdr *)ret_ptr;
442 request->msg.msgtype = MSGBUF_TYPE_IOCTLPTR_REQ;
443 request->msg.ifidx = (u8)ifidx;
444 request->msg.flags = 0;
445 request->msg.request_id = cpu_to_le32(BRCMF_IOCTL_REQ_PKTID);
446 request->cmd = cpu_to_le32(cmd);
447 request->output_buf_len = cpu_to_le16(len);
448 request->trans_id = cpu_to_le16(msgbuf->reqid);
450 buf_len = min_t(u16, len, BRCMF_TX_IOCTL_MAX_MSG_SIZE);
451 request->input_buf_len = cpu_to_le16(buf_len);
452 request->req_buf_addr.high_addr = cpu_to_le32(msgbuf->ioctbuf_phys_hi);
453 request->req_buf_addr.low_addr = cpu_to_le32(msgbuf->ioctbuf_phys_lo);
455 memcpy(msgbuf->ioctbuf, buf, buf_len);
457 memset(msgbuf->ioctbuf, 0, buf_len);
459 err = brcmf_commonring_write_complete(commonring);
460 brcmf_commonring_unlock(commonring);
466 static int brcmf_msgbuf_ioctl_resp_wait(struct brcmf_msgbuf *msgbuf)
468 return wait_event_timeout(msgbuf->ioctl_resp_wait,
469 msgbuf->ctl_completed,
470 MSGBUF_IOCTL_RESP_TIMEOUT);
474 static void brcmf_msgbuf_ioctl_resp_wake(struct brcmf_msgbuf *msgbuf)
476 msgbuf->ctl_completed = true;
477 wake_up(&msgbuf->ioctl_resp_wait);
481 static int brcmf_msgbuf_query_dcmd(struct brcmf_pub *drvr, int ifidx,
482 uint cmd, void *buf, uint len)
484 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
485 struct sk_buff *skb = NULL;
489 brcmf_dbg(MSGBUF, "ifidx=%d, cmd=%d, len=%d\n", ifidx, cmd, len);
490 msgbuf->ctl_completed = false;
491 err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
495 timeout = brcmf_msgbuf_ioctl_resp_wait(msgbuf);
497 brcmf_err("Timeout on response for query command\n");
501 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
503 msgbuf->ioctl_resp_pktid);
504 if (msgbuf->ioctl_resp_ret_len != 0) {
508 memcpy(buf, skb->data, (len < msgbuf->ioctl_resp_ret_len) ?
509 len : msgbuf->ioctl_resp_ret_len);
511 brcmu_pkt_buf_free_skb(skb);
513 return msgbuf->ioctl_resp_status;
517 static int brcmf_msgbuf_set_dcmd(struct brcmf_pub *drvr, int ifidx,
518 uint cmd, void *buf, uint len)
520 return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len);
524 static int brcmf_msgbuf_hdrpull(struct brcmf_pub *drvr, bool do_fws,
525 struct sk_buff *skb, struct brcmf_if **ifp)
530 static void brcmf_msgbuf_rxreorder(struct brcmf_if *ifp, struct sk_buff *skb)
535 brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf *msgbuf, u16 flowid)
540 brcmf_dbg(MSGBUF, "Removing flowring %d\n", flowid);
542 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
543 dma_buf = msgbuf->flowrings[flowid]->buf_addr;
544 dma_free_coherent(msgbuf->drvr->bus_if->dev, dma_sz, dma_buf,
545 msgbuf->flowring_dma_handle[flowid]);
547 brcmf_flowring_delete(msgbuf->flow, flowid);
551 static struct brcmf_msgbuf_work_item *
552 brcmf_msgbuf_dequeue_work(struct brcmf_msgbuf *msgbuf)
554 struct brcmf_msgbuf_work_item *work = NULL;
557 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
558 if (!list_empty(&msgbuf->work_queue)) {
559 work = list_first_entry(&msgbuf->work_queue,
560 struct brcmf_msgbuf_work_item, queue);
561 list_del(&work->queue);
563 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
570 brcmf_msgbuf_flowring_create_worker(struct brcmf_msgbuf *msgbuf,
571 struct brcmf_msgbuf_work_item *work)
573 struct msgbuf_tx_flowring_create_req *create;
574 struct brcmf_commonring *commonring;
582 flowid = work->flowid;
583 dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
584 dma_buf = dma_alloc_coherent(msgbuf->drvr->bus_if->dev, dma_sz,
585 &msgbuf->flowring_dma_handle[flowid],
588 brcmf_err("dma_alloc_coherent failed\n");
589 brcmf_flowring_delete(msgbuf->flow, flowid);
590 return BRCMF_FLOWRING_INVALID_ID;
593 brcmf_commonring_config(msgbuf->flowrings[flowid],
594 BRCMF_H2D_TXFLOWRING_MAX_ITEM,
595 BRCMF_H2D_TXFLOWRING_ITEMSIZE, dma_buf);
597 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
598 brcmf_commonring_lock(commonring);
599 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
601 brcmf_err("Failed to reserve space in commonring\n");
602 brcmf_commonring_unlock(commonring);
603 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
604 return BRCMF_FLOWRING_INVALID_ID;
607 create = (struct msgbuf_tx_flowring_create_req *)ret_ptr;
608 create->msg.msgtype = MSGBUF_TYPE_FLOW_RING_CREATE;
609 create->msg.ifidx = work->ifidx;
610 create->msg.request_id = 0;
611 create->tid = brcmf_flowring_tid(msgbuf->flow, flowid);
612 create->flow_ring_id = cpu_to_le16(flowid +
613 BRCMF_NROF_H2D_COMMON_MSGRINGS);
614 memcpy(create->sa, work->sa, ETH_ALEN);
615 memcpy(create->da, work->da, ETH_ALEN);
616 address = (u64)msgbuf->flowring_dma_handle[flowid];
617 create->flow_ring_addr.high_addr = cpu_to_le32(address >> 32);
618 create->flow_ring_addr.low_addr = cpu_to_le32(address & 0xffffffff);
619 create->max_items = cpu_to_le16(BRCMF_H2D_TXFLOWRING_MAX_ITEM);
620 create->len_item = cpu_to_le16(BRCMF_H2D_TXFLOWRING_ITEMSIZE);
622 brcmf_dbg(MSGBUF, "Send Flow Create Req flow ID %d for peer %pM prio %d ifindex %d\n",
623 flowid, work->da, create->tid, work->ifidx);
625 err = brcmf_commonring_write_complete(commonring);
626 brcmf_commonring_unlock(commonring);
628 brcmf_err("Failed to write commonring\n");
629 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
630 return BRCMF_FLOWRING_INVALID_ID;
637 static void brcmf_msgbuf_flowring_worker(struct work_struct *work)
639 struct brcmf_msgbuf *msgbuf;
640 struct brcmf_msgbuf_work_item *create;
642 msgbuf = container_of(work, struct brcmf_msgbuf, flowring_work);
644 while ((create = brcmf_msgbuf_dequeue_work(msgbuf))) {
645 brcmf_msgbuf_flowring_create_worker(msgbuf, create);
651 static u32 brcmf_msgbuf_flowring_create(struct brcmf_msgbuf *msgbuf, int ifidx,
654 struct brcmf_msgbuf_work_item *create;
655 struct ethhdr *eh = (struct ethhdr *)(skb->data);
659 create = kzalloc(sizeof(*create), GFP_ATOMIC);
661 return BRCMF_FLOWRING_INVALID_ID;
663 flowid = brcmf_flowring_create(msgbuf->flow, eh->h_dest,
664 skb->priority, ifidx);
665 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
670 create->flowid = flowid;
671 create->ifidx = ifidx;
672 memcpy(create->sa, eh->h_source, ETH_ALEN);
673 memcpy(create->da, eh->h_dest, ETH_ALEN);
675 spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
676 list_add_tail(&create->queue, &msgbuf->work_queue);
677 spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
678 schedule_work(&msgbuf->flowring_work);
684 static void brcmf_msgbuf_txflow(struct brcmf_msgbuf *msgbuf, u16 flowid)
686 struct brcmf_flowring *flow = msgbuf->flow;
687 struct brcmf_commonring *commonring;
693 struct msgbuf_tx_msghdr *tx_msghdr;
696 commonring = msgbuf->flowrings[flowid];
697 if (!brcmf_commonring_write_available(commonring))
700 brcmf_commonring_lock(commonring);
702 count = BRCMF_MSGBUF_TX_FLUSH_CNT2 - BRCMF_MSGBUF_TX_FLUSH_CNT1;
703 while (brcmf_flowring_qlen(flow, flowid)) {
704 skb = brcmf_flowring_dequeue(flow, flowid);
706 brcmf_err("No SKB, but qlen %d\n",
707 brcmf_flowring_qlen(flow, flowid));
711 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
712 msgbuf->tx_pktids, skb, ETH_HLEN,
713 &physaddr, &pktid)) {
714 brcmf_flowring_reinsert(flow, flowid, skb);
715 brcmf_err("No PKTID available !!\n");
718 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
720 brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
721 msgbuf->tx_pktids, pktid);
722 brcmf_flowring_reinsert(flow, flowid, skb);
727 tx_msghdr = (struct msgbuf_tx_msghdr *)ret_ptr;
729 tx_msghdr->msg.msgtype = MSGBUF_TYPE_TX_POST;
730 tx_msghdr->msg.request_id = cpu_to_le32(pktid);
731 tx_msghdr->msg.ifidx = brcmf_flowring_ifidx_get(flow, flowid);
732 tx_msghdr->flags = BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3;
733 tx_msghdr->flags |= (skb->priority & 0x07) <<
734 BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT;
735 tx_msghdr->seg_cnt = 1;
736 memcpy(tx_msghdr->txhdr, skb->data, ETH_HLEN);
737 tx_msghdr->data_len = cpu_to_le16(skb->len - ETH_HLEN);
738 address = (u64)physaddr;
739 tx_msghdr->data_buf_addr.high_addr = cpu_to_le32(address >> 32);
740 tx_msghdr->data_buf_addr.low_addr =
741 cpu_to_le32(address & 0xffffffff);
742 tx_msghdr->metadata_buf_len = 0;
743 tx_msghdr->metadata_buf_addr.high_addr = 0;
744 tx_msghdr->metadata_buf_addr.low_addr = 0;
745 atomic_inc(&commonring->outstanding_tx);
746 if (count >= BRCMF_MSGBUF_TX_FLUSH_CNT2) {
747 brcmf_commonring_write_complete(commonring);
752 brcmf_commonring_write_complete(commonring);
753 brcmf_commonring_unlock(commonring);
757 static void brcmf_msgbuf_txflow_worker(struct work_struct *worker)
759 struct brcmf_msgbuf *msgbuf;
762 msgbuf = container_of(worker, struct brcmf_msgbuf, txflow_work);
763 for_each_set_bit(flowid, msgbuf->flow_map, msgbuf->nrof_flowrings) {
764 clear_bit(flowid, msgbuf->flow_map);
765 brcmf_msgbuf_txflow(msgbuf, flowid);
770 static int brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf *msgbuf, u32 flowid,
773 struct brcmf_commonring *commonring;
775 set_bit(flowid, msgbuf->flow_map);
776 commonring = msgbuf->flowrings[flowid];
777 if ((force) || (atomic_read(&commonring->outstanding_tx) <
778 BRCMF_MSGBUF_DELAY_TXWORKER_THRS))
779 queue_work(msgbuf->txflow_wq, &msgbuf->txflow_work);
785 static int brcmf_msgbuf_txdata(struct brcmf_pub *drvr, int ifidx,
786 u8 offset, struct sk_buff *skb)
788 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
789 struct brcmf_flowring *flow = msgbuf->flow;
790 struct ethhdr *eh = (struct ethhdr *)(skb->data);
795 flowid = brcmf_flowring_lookup(flow, eh->h_dest, skb->priority, ifidx);
796 if (flowid == BRCMF_FLOWRING_INVALID_ID) {
797 flowid = brcmf_msgbuf_flowring_create(msgbuf, ifidx, skb);
798 if (flowid == BRCMF_FLOWRING_INVALID_ID)
801 queue_count = brcmf_flowring_enqueue(flow, flowid, skb);
802 force = ((queue_count % BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) == 0);
803 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, force);
810 brcmf_msgbuf_configure_addr_mode(struct brcmf_pub *drvr, int ifidx,
811 enum proto_addr_mode addr_mode)
813 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
815 brcmf_flowring_configure_addr_mode(msgbuf->flow, ifidx, addr_mode);
820 brcmf_msgbuf_delete_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
822 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
824 brcmf_flowring_delete_peer(msgbuf->flow, ifidx, peer);
829 brcmf_msgbuf_add_tdls_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
831 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
833 brcmf_flowring_add_tdls_peer(msgbuf->flow, ifidx, peer);
838 brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf *msgbuf, void *buf)
840 struct msgbuf_ioctl_resp_hdr *ioctl_resp;
842 ioctl_resp = (struct msgbuf_ioctl_resp_hdr *)buf;
844 msgbuf->ioctl_resp_status =
845 (s16)le16_to_cpu(ioctl_resp->compl_hdr.status);
846 msgbuf->ioctl_resp_ret_len = le16_to_cpu(ioctl_resp->resp_len);
847 msgbuf->ioctl_resp_pktid = le32_to_cpu(ioctl_resp->msg.request_id);
849 brcmf_msgbuf_ioctl_resp_wake(msgbuf);
851 if (msgbuf->cur_ioctlrespbuf)
852 msgbuf->cur_ioctlrespbuf--;
853 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
858 brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf *msgbuf, void *buf)
860 struct brcmf_commonring *commonring;
861 struct msgbuf_tx_status *tx_status;
866 tx_status = (struct msgbuf_tx_status *)buf;
867 idx = le32_to_cpu(tx_status->msg.request_id);
868 flowid = le16_to_cpu(tx_status->compl_hdr.flow_ring_id);
869 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
870 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
871 msgbuf->tx_pktids, idx);
875 set_bit(flowid, msgbuf->txstatus_done_map);
876 commonring = msgbuf->flowrings[flowid];
877 atomic_dec(&commonring->outstanding_tx);
879 brcmf_txfinalize(brcmf_get_ifp(msgbuf->drvr, tx_status->msg.ifidx),
884 static u32 brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf *msgbuf, u32 count)
886 struct brcmf_commonring *commonring;
892 struct msgbuf_rx_bufpost *rx_bufpost;
897 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
898 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
902 brcmf_dbg(MSGBUF, "Failed to reserve space in commonring\n");
906 for (i = 0; i < alloced; i++) {
907 rx_bufpost = (struct msgbuf_rx_bufpost *)ret_ptr;
908 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
910 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
913 brcmf_err("Failed to alloc SKB\n");
914 brcmf_commonring_write_cancel(commonring, alloced - i);
919 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
920 msgbuf->rx_pktids, skb, 0,
921 &physaddr, &pktid)) {
922 dev_kfree_skb_any(skb);
923 brcmf_err("No PKTID available !!\n");
924 brcmf_commonring_write_cancel(commonring, alloced - i);
928 if (msgbuf->rx_metadata_offset) {
929 address = (u64)physaddr;
930 rx_bufpost->metadata_buf_len =
931 cpu_to_le16(msgbuf->rx_metadata_offset);
932 rx_bufpost->metadata_buf_addr.high_addr =
933 cpu_to_le32(address >> 32);
934 rx_bufpost->metadata_buf_addr.low_addr =
935 cpu_to_le32(address & 0xffffffff);
937 skb_pull(skb, msgbuf->rx_metadata_offset);
939 physaddr += msgbuf->rx_metadata_offset;
941 rx_bufpost->msg.msgtype = MSGBUF_TYPE_RXBUF_POST;
942 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
944 address = (u64)physaddr;
945 rx_bufpost->data_buf_len = cpu_to_le16((u16)pktlen);
946 rx_bufpost->data_buf_addr.high_addr =
947 cpu_to_le32(address >> 32);
948 rx_bufpost->data_buf_addr.low_addr =
949 cpu_to_le32(address & 0xffffffff);
951 ret_ptr += brcmf_commonring_len_item(commonring);
955 brcmf_commonring_write_complete(commonring);
962 brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf *msgbuf)
967 fillbufs = msgbuf->max_rxbufpost - msgbuf->rxbufpost;
970 retcount = brcmf_msgbuf_rxbuf_data_post(msgbuf, fillbufs);
973 msgbuf->rxbufpost += retcount;
974 fillbufs -= retcount;
980 brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf *msgbuf, u16 rxcnt)
982 msgbuf->rxbufpost -= rxcnt;
983 if (msgbuf->rxbufpost <= (msgbuf->max_rxbufpost -
984 BRCMF_MSGBUF_RXBUFPOST_THRESHOLD))
985 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
990 brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf *msgbuf, bool event_buf,
993 struct brcmf_commonring *commonring;
999 struct msgbuf_rx_ioctl_resp_or_event *rx_bufpost;
1004 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1005 brcmf_commonring_lock(commonring);
1006 ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
1010 brcmf_err("Failed to reserve space in commonring\n");
1011 brcmf_commonring_unlock(commonring);
1015 for (i = 0; i < alloced; i++) {
1016 rx_bufpost = (struct msgbuf_rx_ioctl_resp_or_event *)ret_ptr;
1017 memset(rx_bufpost, 0, sizeof(*rx_bufpost));
1019 skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
1022 brcmf_err("Failed to alloc SKB\n");
1023 brcmf_commonring_write_cancel(commonring, alloced - i);
1028 if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
1029 msgbuf->rx_pktids, skb, 0,
1030 &physaddr, &pktid)) {
1031 dev_kfree_skb_any(skb);
1032 brcmf_err("No PKTID available !!\n");
1033 brcmf_commonring_write_cancel(commonring, alloced - i);
1037 rx_bufpost->msg.msgtype = MSGBUF_TYPE_EVENT_BUF_POST;
1039 rx_bufpost->msg.msgtype =
1040 MSGBUF_TYPE_IOCTLRESP_BUF_POST;
1041 rx_bufpost->msg.request_id = cpu_to_le32(pktid);
1043 address = (u64)physaddr;
1044 rx_bufpost->host_buf_len = cpu_to_le16((u16)pktlen);
1045 rx_bufpost->host_buf_addr.high_addr =
1046 cpu_to_le32(address >> 32);
1047 rx_bufpost->host_buf_addr.low_addr =
1048 cpu_to_le32(address & 0xffffffff);
1050 ret_ptr += brcmf_commonring_len_item(commonring);
1054 brcmf_commonring_write_complete(commonring);
1056 brcmf_commonring_unlock(commonring);
1062 static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf)
1066 count = msgbuf->max_ioctlrespbuf - msgbuf->cur_ioctlrespbuf;
1067 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, false, count);
1068 msgbuf->cur_ioctlrespbuf += count;
1072 static void brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf *msgbuf)
1076 count = msgbuf->max_eventbuf - msgbuf->cur_eventbuf;
1077 count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, true, count);
1078 msgbuf->cur_eventbuf += count;
1082 static void brcmf_msgbuf_process_event(struct brcmf_msgbuf *msgbuf, void *buf)
1084 struct msgbuf_rx_event *event;
1087 struct sk_buff *skb;
1088 struct brcmf_if *ifp;
1090 event = (struct msgbuf_rx_event *)buf;
1091 idx = le32_to_cpu(event->msg.request_id);
1092 buflen = le16_to_cpu(event->event_data_len);
1094 if (msgbuf->cur_eventbuf)
1095 msgbuf->cur_eventbuf--;
1096 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1098 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1099 msgbuf->rx_pktids, idx);
1103 if (msgbuf->rx_dataoffset)
1104 skb_pull(skb, msgbuf->rx_dataoffset);
1106 skb_trim(skb, buflen);
1108 ifp = brcmf_get_ifp(msgbuf->drvr, event->msg.ifidx);
1109 if (!ifp || !ifp->ndev) {
1110 brcmf_err("Received pkt for invalid ifidx %d\n",
1115 skb->protocol = eth_type_trans(skb, ifp->ndev);
1117 brcmf_fweh_process_skb(ifp->drvr, skb);
1120 brcmu_pkt_buf_free_skb(skb);
1125 brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf *msgbuf, void *buf)
1127 struct msgbuf_rx_complete *rx_complete;
1128 struct sk_buff *skb;
1132 struct brcmf_if *ifp;
1134 brcmf_msgbuf_update_rxbufpost_count(msgbuf, 1);
1136 rx_complete = (struct msgbuf_rx_complete *)buf;
1137 data_offset = le16_to_cpu(rx_complete->data_offset);
1138 buflen = le16_to_cpu(rx_complete->data_len);
1139 idx = le32_to_cpu(rx_complete->msg.request_id);
1141 skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
1142 msgbuf->rx_pktids, idx);
1147 skb_pull(skb, data_offset);
1148 else if (msgbuf->rx_dataoffset)
1149 skb_pull(skb, msgbuf->rx_dataoffset);
1151 skb_trim(skb, buflen);
1153 ifp = brcmf_get_ifp(msgbuf->drvr, rx_complete->msg.ifidx);
1154 if (!ifp || !ifp->ndev) {
1155 brcmf_err("Received pkt for invalid ifidx %d\n",
1156 rx_complete->msg.ifidx);
1157 brcmu_pkt_buf_free_skb(skb);
1160 brcmf_netif_rx(ifp, skb);
1165 brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf *msgbuf,
1168 struct msgbuf_flowring_create_resp *flowring_create_resp;
1172 flowring_create_resp = (struct msgbuf_flowring_create_resp *)buf;
1174 flowid = le16_to_cpu(flowring_create_resp->compl_hdr.flow_ring_id);
1175 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
1176 status = le16_to_cpu(flowring_create_resp->compl_hdr.status);
1179 brcmf_err("Flowring creation failed, code %d\n", status);
1180 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1183 brcmf_dbg(MSGBUF, "Flowring %d Create response status %d\n", flowid,
1186 brcmf_flowring_open(msgbuf->flow, flowid);
1188 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
1193 brcmf_msgbuf_process_flow_ring_delete_response(struct brcmf_msgbuf *msgbuf,
1196 struct msgbuf_flowring_delete_resp *flowring_delete_resp;
1200 flowring_delete_resp = (struct msgbuf_flowring_delete_resp *)buf;
1202 flowid = le16_to_cpu(flowring_delete_resp->compl_hdr.flow_ring_id);
1203 flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
1204 status = le16_to_cpu(flowring_delete_resp->compl_hdr.status);
1207 brcmf_err("Flowring deletion failed, code %d\n", status);
1208 brcmf_flowring_delete(msgbuf->flow, flowid);
1211 brcmf_dbg(MSGBUF, "Flowring %d Delete response status %d\n", flowid,
1214 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1218 static void brcmf_msgbuf_process_msgtype(struct brcmf_msgbuf *msgbuf, void *buf)
1220 struct msgbuf_common_hdr *msg;
1222 msg = (struct msgbuf_common_hdr *)buf;
1223 switch (msg->msgtype) {
1224 case MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT:
1225 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT\n");
1226 brcmf_msgbuf_process_flow_ring_create_response(msgbuf, buf);
1228 case MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT:
1229 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT\n");
1230 brcmf_msgbuf_process_flow_ring_delete_response(msgbuf, buf);
1232 case MSGBUF_TYPE_IOCTLPTR_REQ_ACK:
1233 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTLPTR_REQ_ACK\n");
1235 case MSGBUF_TYPE_IOCTL_CMPLT:
1236 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTL_CMPLT\n");
1237 brcmf_msgbuf_process_ioctl_complete(msgbuf, buf);
1239 case MSGBUF_TYPE_WL_EVENT:
1240 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_WL_EVENT\n");
1241 brcmf_msgbuf_process_event(msgbuf, buf);
1243 case MSGBUF_TYPE_TX_STATUS:
1244 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_TX_STATUS\n");
1245 brcmf_msgbuf_process_txstatus(msgbuf, buf);
1247 case MSGBUF_TYPE_RX_CMPLT:
1248 brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RX_CMPLT\n");
1249 brcmf_msgbuf_process_rx_complete(msgbuf, buf);
1252 brcmf_err("Unsupported msgtype %d\n", msg->msgtype);
1258 static void brcmf_msgbuf_process_rx(struct brcmf_msgbuf *msgbuf,
1259 struct brcmf_commonring *commonring)
1266 buf = brcmf_commonring_get_read_ptr(commonring, &count);
1272 brcmf_msgbuf_process_msgtype(msgbuf,
1273 buf + msgbuf->rx_dataoffset);
1274 buf += brcmf_commonring_len_item(commonring);
1276 if (processed == BRCMF_MSGBUF_UPDATE_RX_PTR_THRS) {
1277 brcmf_commonring_read_complete(commonring, processed);
1283 brcmf_commonring_read_complete(commonring, processed);
1285 if (commonring->r_ptr == 0)
1290 int brcmf_proto_msgbuf_rx_trigger(struct device *dev)
1292 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1293 struct brcmf_pub *drvr = bus_if->drvr;
1294 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1295 struct brcmf_commonring *commonring;
1300 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1301 brcmf_msgbuf_process_rx(msgbuf, buf);
1302 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1303 brcmf_msgbuf_process_rx(msgbuf, buf);
1304 buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1305 brcmf_msgbuf_process_rx(msgbuf, buf);
1307 for_each_set_bit(flowid, msgbuf->txstatus_done_map,
1308 msgbuf->nrof_flowrings) {
1309 clear_bit(flowid, msgbuf->txstatus_done_map);
1310 commonring = msgbuf->flowrings[flowid];
1311 qlen = brcmf_flowring_qlen(msgbuf->flow, flowid);
1312 if ((qlen > BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) ||
1313 ((qlen) && (atomic_read(&commonring->outstanding_tx) <
1314 BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS)))
1315 brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
1322 void brcmf_msgbuf_delete_flowring(struct brcmf_pub *drvr, u16 flowid)
1324 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1325 struct msgbuf_tx_flowring_delete_req *delete;
1326 struct brcmf_commonring *commonring;
1331 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1332 brcmf_commonring_lock(commonring);
1333 ret_ptr = brcmf_commonring_reserve_for_write(commonring);
1335 brcmf_err("FW unaware, flowring will be removed !!\n");
1336 brcmf_commonring_unlock(commonring);
1337 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1341 delete = (struct msgbuf_tx_flowring_delete_req *)ret_ptr;
1343 ifidx = brcmf_flowring_ifidx_get(msgbuf->flow, flowid);
1345 delete->msg.msgtype = MSGBUF_TYPE_FLOW_RING_DELETE;
1346 delete->msg.ifidx = ifidx;
1347 delete->msg.request_id = 0;
1349 delete->flow_ring_id = cpu_to_le16(flowid +
1350 BRCMF_NROF_H2D_COMMON_MSGRINGS);
1353 brcmf_dbg(MSGBUF, "Send Flow Delete Req flow ID %d, ifindex %d\n",
1356 err = brcmf_commonring_write_complete(commonring);
1357 brcmf_commonring_unlock(commonring);
1359 brcmf_err("Failed to submit RING_DELETE, flowring will be removed\n");
1360 brcmf_msgbuf_remove_flowring(msgbuf, flowid);
1365 static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1367 struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
1368 struct brcmf_pub *drvr = bus_if->drvr;
1369 struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1370 struct brcmf_commonring *commonring;
1372 struct brcmf_flowring_ring *ring;
1373 struct brcmf_flowring_hash *hash;
1375 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
1376 seq_printf(seq, "h2d_ctl_submit: rp %4u, wp %4u, depth %4u\n",
1377 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1378 commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
1379 seq_printf(seq, "h2d_rx_submit: rp %4u, wp %4u, depth %4u\n",
1380 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1381 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
1382 seq_printf(seq, "d2h_ctl_cmplt: rp %4u, wp %4u, depth %4u\n",
1383 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1384 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
1385 seq_printf(seq, "d2h_tx_cmplt: rp %4u, wp %4u, depth %4u\n",
1386 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1387 commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
1388 seq_printf(seq, "d2h_rx_cmplt: rp %4u, wp %4u, depth %4u\n",
1389 commonring->r_ptr, commonring->w_ptr, commonring->depth);
1391 seq_printf(seq, "\nh2d_flowrings: depth %u\n",
1392 BRCMF_H2D_TXFLOWRING_MAX_ITEM);
1393 seq_puts(seq, "Active flowrings:\n");
1394 hash = msgbuf->flow->hash;
1395 for (i = 0; i < msgbuf->flow->nrofrings; i++) {
1396 if (!msgbuf->flow->rings[i])
1398 ring = msgbuf->flow->rings[i];
1399 if (ring->status != RING_OPEN)
1401 commonring = msgbuf->flowrings[i];
1402 hash = &msgbuf->flow->hash[ring->hash_id];
1403 seq_printf(seq, "id %3u: rp %4u, wp %4u, qlen %4u, blocked %u\n"
1404 " ifidx %u, fifo %u, da %pM\n",
1405 i, commonring->r_ptr, commonring->w_ptr,
1406 skb_queue_len(&ring->skblist), ring->blocked,
1407 hash->ifidx, hash->fifo, hash->mac);
1413 static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
1419 int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
1421 struct brcmf_bus_msgbuf *if_msgbuf;
1422 struct brcmf_msgbuf *msgbuf;
1426 if_msgbuf = drvr->bus_if->msgbuf;
1428 if (if_msgbuf->nrof_flowrings >= BRCMF_FLOWRING_HASHSIZE) {
1429 brcmf_err("driver not configured for this many flowrings %d\n",
1430 if_msgbuf->nrof_flowrings);
1431 if_msgbuf->nrof_flowrings = BRCMF_FLOWRING_HASHSIZE - 1;
1434 msgbuf = kzalloc(sizeof(*msgbuf), GFP_KERNEL);
1438 msgbuf->txflow_wq = create_singlethread_workqueue("msgbuf_txflow");
1439 if (msgbuf->txflow_wq == NULL) {
1440 brcmf_err("workqueue creation failed\n");
1443 INIT_WORK(&msgbuf->txflow_work, brcmf_msgbuf_txflow_worker);
1444 count = BITS_TO_LONGS(if_msgbuf->nrof_flowrings);
1445 count = count * sizeof(unsigned long);
1446 msgbuf->flow_map = kzalloc(count, GFP_KERNEL);
1447 if (!msgbuf->flow_map)
1450 msgbuf->txstatus_done_map = kzalloc(count, GFP_KERNEL);
1451 if (!msgbuf->txstatus_done_map)
1454 msgbuf->drvr = drvr;
1455 msgbuf->ioctbuf = dma_alloc_coherent(drvr->bus_if->dev,
1456 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1457 &msgbuf->ioctbuf_handle,
1459 if (!msgbuf->ioctbuf)
1461 address = (u64)msgbuf->ioctbuf_handle;
1462 msgbuf->ioctbuf_phys_hi = address >> 32;
1463 msgbuf->ioctbuf_phys_lo = address & 0xffffffff;
1465 drvr->proto->hdrpull = brcmf_msgbuf_hdrpull;
1466 drvr->proto->query_dcmd = brcmf_msgbuf_query_dcmd;
1467 drvr->proto->set_dcmd = brcmf_msgbuf_set_dcmd;
1468 drvr->proto->txdata = brcmf_msgbuf_txdata;
1469 drvr->proto->configure_addr_mode = brcmf_msgbuf_configure_addr_mode;
1470 drvr->proto->delete_peer = brcmf_msgbuf_delete_peer;
1471 drvr->proto->add_tdls_peer = brcmf_msgbuf_add_tdls_peer;
1472 drvr->proto->rxreorder = brcmf_msgbuf_rxreorder;
1473 drvr->proto->pd = msgbuf;
1475 init_waitqueue_head(&msgbuf->ioctl_resp_wait);
1477 msgbuf->commonrings =
1478 (struct brcmf_commonring **)if_msgbuf->commonrings;
1479 msgbuf->flowrings = (struct brcmf_commonring **)if_msgbuf->flowrings;
1480 msgbuf->nrof_flowrings = if_msgbuf->nrof_flowrings;
1481 msgbuf->flowring_dma_handle = kzalloc(msgbuf->nrof_flowrings *
1482 sizeof(*msgbuf->flowring_dma_handle), GFP_KERNEL);
1483 if (!msgbuf->flowring_dma_handle)
1486 msgbuf->rx_dataoffset = if_msgbuf->rx_dataoffset;
1487 msgbuf->max_rxbufpost = if_msgbuf->max_rxbufpost;
1489 msgbuf->max_ioctlrespbuf = BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST;
1490 msgbuf->max_eventbuf = BRCMF_MSGBUF_MAX_EVENTBUF_POST;
1492 msgbuf->tx_pktids = brcmf_msgbuf_init_pktids(NR_TX_PKTIDS,
1494 if (!msgbuf->tx_pktids)
1496 msgbuf->rx_pktids = brcmf_msgbuf_init_pktids(NR_RX_PKTIDS,
1498 if (!msgbuf->rx_pktids)
1501 msgbuf->flow = brcmf_flowring_attach(drvr->bus_if->dev,
1502 if_msgbuf->nrof_flowrings);
1507 brcmf_dbg(MSGBUF, "Feeding buffers, rx data %d, rx event %d, rx ioctl resp %d\n",
1508 msgbuf->max_rxbufpost, msgbuf->max_eventbuf,
1509 msgbuf->max_ioctlrespbuf);
1512 brcmf_msgbuf_rxbuf_data_fill(msgbuf);
1513 if (msgbuf->max_rxbufpost != msgbuf->rxbufpost)
1518 } while (count < 10);
1519 brcmf_msgbuf_rxbuf_event_post(msgbuf);
1520 brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
1522 INIT_WORK(&msgbuf->flowring_work, brcmf_msgbuf_flowring_worker);
1523 spin_lock_init(&msgbuf->flowring_work_lock);
1524 INIT_LIST_HEAD(&msgbuf->work_queue);
1526 brcmf_debugfs_add_entry(drvr, "msgbuf_stats", brcmf_msgbuf_stats_read);
1532 kfree(msgbuf->flow_map);
1533 kfree(msgbuf->txstatus_done_map);
1534 brcmf_msgbuf_release_pktids(msgbuf);
1535 kfree(msgbuf->flowring_dma_handle);
1536 if (msgbuf->ioctbuf)
1537 dma_free_coherent(drvr->bus_if->dev,
1538 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1540 msgbuf->ioctbuf_handle);
1547 void brcmf_proto_msgbuf_detach(struct brcmf_pub *drvr)
1549 struct brcmf_msgbuf *msgbuf;
1550 struct brcmf_msgbuf_work_item *work;
1552 brcmf_dbg(TRACE, "Enter\n");
1553 if (drvr->proto->pd) {
1554 msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
1555 cancel_work_sync(&msgbuf->flowring_work);
1556 while (!list_empty(&msgbuf->work_queue)) {
1557 work = list_first_entry(&msgbuf->work_queue,
1558 struct brcmf_msgbuf_work_item,
1560 list_del(&work->queue);
1563 kfree(msgbuf->flow_map);
1564 kfree(msgbuf->txstatus_done_map);
1565 if (msgbuf->txflow_wq)
1566 destroy_workqueue(msgbuf->txflow_wq);
1568 brcmf_flowring_detach(msgbuf->flow);
1569 dma_free_coherent(drvr->bus_if->dev,
1570 BRCMF_TX_IOCTL_MAX_MSG_SIZE,
1571 msgbuf->ioctbuf, msgbuf->ioctbuf_handle);
1572 brcmf_msgbuf_release_pktids(msgbuf);
1573 kfree(msgbuf->flowring_dma_handle);
1575 drvr->proto->pd = NULL;