nexmon – Rev 1
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/* Copyright (c) 2014 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*******************************************************************************
* Communicates with the dongle by using dcmd codes.
* For certain dcmd codes, the dongle interprets string data from the host.
******************************************************************************/
#include <linux/types.h>
#include <linux/netdevice.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>
#include "core.h"
#include "debug.h"
#include "proto.h"
#include "msgbuf.h"
#include "commonring.h"
#include "flowring.h"
#include "bus.h"
#include "tracepoint.h"
#define MSGBUF_IOCTL_RESP_TIMEOUT 2000
#define MSGBUF_TYPE_GEN_STATUS 0x1
#define MSGBUF_TYPE_RING_STATUS 0x2
#define MSGBUF_TYPE_FLOW_RING_CREATE 0x3
#define MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT 0x4
#define MSGBUF_TYPE_FLOW_RING_DELETE 0x5
#define MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT 0x6
#define MSGBUF_TYPE_FLOW_RING_FLUSH 0x7
#define MSGBUF_TYPE_FLOW_RING_FLUSH_CMPLT 0x8
#define MSGBUF_TYPE_IOCTLPTR_REQ 0x9
#define MSGBUF_TYPE_IOCTLPTR_REQ_ACK 0xA
#define MSGBUF_TYPE_IOCTLRESP_BUF_POST 0xB
#define MSGBUF_TYPE_IOCTL_CMPLT 0xC
#define MSGBUF_TYPE_EVENT_BUF_POST 0xD
#define MSGBUF_TYPE_WL_EVENT 0xE
#define MSGBUF_TYPE_TX_POST 0xF
#define MSGBUF_TYPE_TX_STATUS 0x10
#define MSGBUF_TYPE_RXBUF_POST 0x11
#define MSGBUF_TYPE_RX_CMPLT 0x12
#define MSGBUF_TYPE_LPBK_DMAXFER 0x13
#define MSGBUF_TYPE_LPBK_DMAXFER_CMPLT 0x14
#define NR_TX_PKTIDS 2048
#define NR_RX_PKTIDS 1024
#define BRCMF_IOCTL_REQ_PKTID 0xFFFE
#define BRCMF_MSGBUF_MAX_PKT_SIZE 2048
#define BRCMF_MSGBUF_RXBUFPOST_THRESHOLD 32
#define BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST 8
#define BRCMF_MSGBUF_MAX_EVENTBUF_POST 8
#define BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3 0x01
#define BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT 5
#define BRCMF_MSGBUF_TX_FLUSH_CNT1 32
#define BRCMF_MSGBUF_TX_FLUSH_CNT2 96
#define BRCMF_MSGBUF_DELAY_TXWORKER_THRS 96
#define BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS 32
#define BRCMF_MSGBUF_UPDATE_RX_PTR_THRS 48
struct msgbuf_common_hdr {
u8 msgtype;
u8 ifidx;
u8 flags;
u8 rsvd0;
__le32 request_id;
};
struct msgbuf_buf_addr {
__le32 low_addr;
__le32 high_addr;
};
struct msgbuf_ioctl_req_hdr {
struct msgbuf_common_hdr msg;
__le32 cmd;
__le16 trans_id;
__le16 input_buf_len;
__le16 output_buf_len;
__le16 rsvd0[3];
struct msgbuf_buf_addr req_buf_addr;
__le32 rsvd1[2];
};
struct msgbuf_tx_msghdr {
struct msgbuf_common_hdr msg;
u8 txhdr[ETH_HLEN];
u8 flags;
u8 seg_cnt;
struct msgbuf_buf_addr metadata_buf_addr;
struct msgbuf_buf_addr data_buf_addr;
__le16 metadata_buf_len;
__le16 data_len;
__le32 rsvd0;
};
struct msgbuf_rx_bufpost {
struct msgbuf_common_hdr msg;
__le16 metadata_buf_len;
__le16 data_buf_len;
__le32 rsvd0;
struct msgbuf_buf_addr metadata_buf_addr;
struct msgbuf_buf_addr data_buf_addr;
};
struct msgbuf_rx_ioctl_resp_or_event {
struct msgbuf_common_hdr msg;
__le16 host_buf_len;
__le16 rsvd0[3];
struct msgbuf_buf_addr host_buf_addr;
__le32 rsvd1[4];
};
struct msgbuf_completion_hdr {
__le16 status;
__le16 flow_ring_id;
};
struct msgbuf_rx_event {
struct msgbuf_common_hdr msg;
struct msgbuf_completion_hdr compl_hdr;
__le16 event_data_len;
__le16 seqnum;
__le16 rsvd0[4];
};
struct msgbuf_ioctl_resp_hdr {
struct msgbuf_common_hdr msg;
struct msgbuf_completion_hdr compl_hdr;
__le16 resp_len;
__le16 trans_id;
__le32 cmd;
__le32 rsvd0;
};
struct msgbuf_tx_status {
struct msgbuf_common_hdr msg;
struct msgbuf_completion_hdr compl_hdr;
__le16 metadata_len;
__le16 tx_status;
};
struct msgbuf_rx_complete {
struct msgbuf_common_hdr msg;
struct msgbuf_completion_hdr compl_hdr;
__le16 metadata_len;
__le16 data_len;
__le16 data_offset;
__le16 flags;
__le32 rx_status_0;
__le32 rx_status_1;
__le32 rsvd0;
};
struct msgbuf_tx_flowring_create_req {
struct msgbuf_common_hdr msg;
u8 da[ETH_ALEN];
u8 sa[ETH_ALEN];
u8 tid;
u8 if_flags;
__le16 flow_ring_id;
u8 tc;
u8 priority;
__le16 int_vector;
__le16 max_items;
__le16 len_item;
struct msgbuf_buf_addr flow_ring_addr;
};
struct msgbuf_tx_flowring_delete_req {
struct msgbuf_common_hdr msg;
__le16 flow_ring_id;
__le16 reason;
__le32 rsvd0[7];
};
struct msgbuf_flowring_create_resp {
struct msgbuf_common_hdr msg;
struct msgbuf_completion_hdr compl_hdr;
__le32 rsvd0[3];
};
struct msgbuf_flowring_delete_resp {
struct msgbuf_common_hdr msg;
struct msgbuf_completion_hdr compl_hdr;
__le32 rsvd0[3];
};
struct msgbuf_flowring_flush_resp {
struct msgbuf_common_hdr msg;
struct msgbuf_completion_hdr compl_hdr;
__le32 rsvd0[3];
};
struct brcmf_msgbuf_work_item {
struct list_head queue;
u32 flowid;
int ifidx;
u8 sa[ETH_ALEN];
u8 da[ETH_ALEN];
};
struct brcmf_msgbuf {
struct brcmf_pub *drvr;
struct brcmf_commonring **commonrings;
struct brcmf_commonring **flowrings;
dma_addr_t *flowring_dma_handle;
u16 nrof_flowrings;
u16 rx_dataoffset;
u32 max_rxbufpost;
u16 rx_metadata_offset;
u32 rxbufpost;
u32 max_ioctlrespbuf;
u32 cur_ioctlrespbuf;
u32 max_eventbuf;
u32 cur_eventbuf;
void *ioctbuf;
dma_addr_t ioctbuf_handle;
u32 ioctbuf_phys_hi;
u32 ioctbuf_phys_lo;
int ioctl_resp_status;
u32 ioctl_resp_ret_len;
u32 ioctl_resp_pktid;
u16 data_seq_no;
u16 ioctl_seq_no;
u32 reqid;
wait_queue_head_t ioctl_resp_wait;
bool ctl_completed;
struct brcmf_msgbuf_pktids *tx_pktids;
struct brcmf_msgbuf_pktids *rx_pktids;
struct brcmf_flowring *flow;
struct workqueue_struct *txflow_wq;
struct work_struct txflow_work;
unsigned long *flow_map;
unsigned long *txstatus_done_map;
struct work_struct flowring_work;
spinlock_t flowring_work_lock;
struct list_head work_queue;
};
struct brcmf_msgbuf_pktid {
atomic_t allocated;
u16 data_offset;
struct sk_buff *skb;
dma_addr_t physaddr;
};
struct brcmf_msgbuf_pktids {
u32 array_size;
u32 last_allocated_idx;
enum dma_data_direction direction;
struct brcmf_msgbuf_pktid *array;
};
static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf);
static struct brcmf_msgbuf_pktids *
brcmf_msgbuf_init_pktids(u32 nr_array_entries,
enum dma_data_direction direction)
{
struct brcmf_msgbuf_pktid *array;
struct brcmf_msgbuf_pktids *pktids;
array = kcalloc(nr_array_entries, sizeof(*array), GFP_KERNEL);
if (!array)
return NULL;
pktids = kzalloc(sizeof(*pktids), GFP_KERNEL);
if (!pktids) {
kfree(array);
return NULL;
}
pktids->array = array;
pktids->array_size = nr_array_entries;
return pktids;
}
static int
brcmf_msgbuf_alloc_pktid(struct device *dev,
struct brcmf_msgbuf_pktids *pktids,
struct sk_buff *skb, u16 data_offset,
dma_addr_t *physaddr, u32 *idx)
{
struct brcmf_msgbuf_pktid *array;
u32 count;
array = pktids->array;
*physaddr = dma_map_single(dev, skb->data + data_offset,
skb->len - data_offset, pktids->direction);
if (dma_mapping_error(dev, *physaddr)) {
brcmf_err("dma_map_single failed !!\n");
return -ENOMEM;
}
*idx = pktids->last_allocated_idx;
count = 0;
do {
(*idx)++;
if (*idx == pktids->array_size)
*idx = 0;
if (array[*idx].allocated.counter == 0)
if (atomic_cmpxchg(&array[*idx].allocated, 0, 1) == 0)
break;
count++;
} while (count < pktids->array_size);
if (count == pktids->array_size)
return -ENOMEM;
array[*idx].data_offset = data_offset;
array[*idx].physaddr = *physaddr;
array[*idx].skb = skb;
pktids->last_allocated_idx = *idx;
return 0;
}
static struct sk_buff *
brcmf_msgbuf_get_pktid(struct device *dev, struct brcmf_msgbuf_pktids *pktids,
u32 idx)
{
struct brcmf_msgbuf_pktid *pktid;
struct sk_buff *skb;
if (idx >= pktids->array_size) {
brcmf_err("Invalid packet id %d (max %d)\n", idx,
pktids->array_size);
return NULL;
}
if (pktids->array[idx].allocated.counter) {
pktid = &pktids->array[idx];
dma_unmap_single(dev, pktid->physaddr,
pktid->skb->len - pktid->data_offset,
pktids->direction);
skb = pktid->skb;
pktid->allocated.counter = 0;
return skb;
} else {
brcmf_err("Invalid packet id %d (not in use)\n", idx);
}
return NULL;
}
static void
brcmf_msgbuf_release_array(struct device *dev,
struct brcmf_msgbuf_pktids *pktids)
{
struct brcmf_msgbuf_pktid *array;
struct brcmf_msgbuf_pktid *pktid;
u32 count;
array = pktids->array;
count = 0;
do {
if (array[count].allocated.counter) {
pktid = &array[count];
dma_unmap_single(dev, pktid->physaddr,
pktid->skb->len - pktid->data_offset,
pktids->direction);
brcmu_pkt_buf_free_skb(pktid->skb);
}
count++;
} while (count < pktids->array_size);
kfree(array);
kfree(pktids);
}
static void brcmf_msgbuf_release_pktids(struct brcmf_msgbuf *msgbuf)
{
if (msgbuf->rx_pktids)
brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
msgbuf->rx_pktids);
if (msgbuf->tx_pktids)
brcmf_msgbuf_release_array(msgbuf->drvr->bus_if->dev,
msgbuf->tx_pktids);
}
static int brcmf_msgbuf_tx_ioctl(struct brcmf_pub *drvr, int ifidx,
uint cmd, void *buf, uint len)
{
struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
struct brcmf_commonring *commonring;
struct msgbuf_ioctl_req_hdr *request;
u16 buf_len;
void *ret_ptr;
int err;
commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
brcmf_commonring_lock(commonring);
ret_ptr = brcmf_commonring_reserve_for_write(commonring);
if (!ret_ptr) {
brcmf_err("Failed to reserve space in commonring\n");
brcmf_commonring_unlock(commonring);
return -ENOMEM;
}
msgbuf->reqid++;
request = (struct msgbuf_ioctl_req_hdr *)ret_ptr;
request->msg.msgtype = MSGBUF_TYPE_IOCTLPTR_REQ;
request->msg.ifidx = (u8)ifidx;
request->msg.flags = 0;
request->msg.request_id = cpu_to_le32(BRCMF_IOCTL_REQ_PKTID);
request->cmd = cpu_to_le32(cmd);
request->output_buf_len = cpu_to_le16(len);
request->trans_id = cpu_to_le16(msgbuf->reqid);
buf_len = min_t(u16, len, BRCMF_TX_IOCTL_MAX_MSG_SIZE);
request->input_buf_len = cpu_to_le16(buf_len);
request->req_buf_addr.high_addr = cpu_to_le32(msgbuf->ioctbuf_phys_hi);
request->req_buf_addr.low_addr = cpu_to_le32(msgbuf->ioctbuf_phys_lo);
if (buf)
memcpy(msgbuf->ioctbuf, buf, buf_len);
else
memset(msgbuf->ioctbuf, 0, buf_len);
err = brcmf_commonring_write_complete(commonring);
brcmf_commonring_unlock(commonring);
return err;
}
static int brcmf_msgbuf_ioctl_resp_wait(struct brcmf_msgbuf *msgbuf)
{
return wait_event_timeout(msgbuf->ioctl_resp_wait,
msgbuf->ctl_completed,
msecs_to_jiffies(MSGBUF_IOCTL_RESP_TIMEOUT));
}
static void brcmf_msgbuf_ioctl_resp_wake(struct brcmf_msgbuf *msgbuf)
{
msgbuf->ctl_completed = true;
if (waitqueue_active(&msgbuf->ioctl_resp_wait))
wake_up(&msgbuf->ioctl_resp_wait);
}
static int brcmf_msgbuf_query_dcmd(struct brcmf_pub *drvr, int ifidx,
uint cmd, void *buf, uint len)
{
struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
struct sk_buff *skb = NULL;
int timeout;
int err;
brcmf_dbg(MSGBUF, "ifidx=%d, cmd=%d, len=%d\n", ifidx, cmd, len);
msgbuf->ctl_completed = false;
err = brcmf_msgbuf_tx_ioctl(drvr, ifidx, cmd, buf, len);
if (err)
return err;
timeout = brcmf_msgbuf_ioctl_resp_wait(msgbuf);
if (!timeout) {
brcmf_err("Timeout on response for query command\n");
return -EIO;
}
skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
msgbuf->rx_pktids,
msgbuf->ioctl_resp_pktid);
if (msgbuf->ioctl_resp_ret_len != 0) {
if (!skb)
return -EBADF;
memcpy(buf, skb->data, (len < msgbuf->ioctl_resp_ret_len) ?
len : msgbuf->ioctl_resp_ret_len);
}
brcmu_pkt_buf_free_skb(skb);
return msgbuf->ioctl_resp_status;
}
static int brcmf_msgbuf_set_dcmd(struct brcmf_pub *drvr, int ifidx,
uint cmd, void *buf, uint len)
{
return brcmf_msgbuf_query_dcmd(drvr, ifidx, cmd, buf, len);
}
static int brcmf_msgbuf_hdrpull(struct brcmf_pub *drvr, bool do_fws,
struct sk_buff *skb, struct brcmf_if **ifp)
{
return -ENODEV;
}
static void
brcmf_msgbuf_remove_flowring(struct brcmf_msgbuf *msgbuf, u16 flowid)
{
u32 dma_sz;
void *dma_buf;
brcmf_dbg(MSGBUF, "Removing flowring %d\n", flowid);
dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
dma_buf = msgbuf->flowrings[flowid]->buf_addr;
dma_free_coherent(msgbuf->drvr->bus_if->dev, dma_sz, dma_buf,
msgbuf->flowring_dma_handle[flowid]);
brcmf_flowring_delete(msgbuf->flow, flowid);
}
static struct brcmf_msgbuf_work_item *
brcmf_msgbuf_dequeue_work(struct brcmf_msgbuf *msgbuf)
{
struct brcmf_msgbuf_work_item *work = NULL;
ulong flags;
spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
if (!list_empty(&msgbuf->work_queue)) {
work = list_first_entry(&msgbuf->work_queue,
struct brcmf_msgbuf_work_item, queue);
list_del(&work->queue);
}
spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
return work;
}
static u32
brcmf_msgbuf_flowring_create_worker(struct brcmf_msgbuf *msgbuf,
struct brcmf_msgbuf_work_item *work)
{
struct msgbuf_tx_flowring_create_req *create;
struct brcmf_commonring *commonring;
void *ret_ptr;
u32 flowid;
void *dma_buf;
u32 dma_sz;
u64 address;
int err;
flowid = work->flowid;
dma_sz = BRCMF_H2D_TXFLOWRING_MAX_ITEM * BRCMF_H2D_TXFLOWRING_ITEMSIZE;
dma_buf = dma_alloc_coherent(msgbuf->drvr->bus_if->dev, dma_sz,
&msgbuf->flowring_dma_handle[flowid],
GFP_KERNEL);
if (!dma_buf) {
brcmf_err("dma_alloc_coherent failed\n");
brcmf_flowring_delete(msgbuf->flow, flowid);
return BRCMF_FLOWRING_INVALID_ID;
}
brcmf_commonring_config(msgbuf->flowrings[flowid],
BRCMF_H2D_TXFLOWRING_MAX_ITEM,
BRCMF_H2D_TXFLOWRING_ITEMSIZE, dma_buf);
commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
brcmf_commonring_lock(commonring);
ret_ptr = brcmf_commonring_reserve_for_write(commonring);
if (!ret_ptr) {
brcmf_err("Failed to reserve space in commonring\n");
brcmf_commonring_unlock(commonring);
brcmf_msgbuf_remove_flowring(msgbuf, flowid);
return BRCMF_FLOWRING_INVALID_ID;
}
create = (struct msgbuf_tx_flowring_create_req *)ret_ptr;
create->msg.msgtype = MSGBUF_TYPE_FLOW_RING_CREATE;
create->msg.ifidx = work->ifidx;
create->msg.request_id = 0;
create->tid = brcmf_flowring_tid(msgbuf->flow, flowid);
create->flow_ring_id = cpu_to_le16(flowid +
BRCMF_NROF_H2D_COMMON_MSGRINGS);
memcpy(create->sa, work->sa, ETH_ALEN);
memcpy(create->da, work->da, ETH_ALEN);
address = (u64)msgbuf->flowring_dma_handle[flowid];
create->flow_ring_addr.high_addr = cpu_to_le32(address >> 32);
create->flow_ring_addr.low_addr = cpu_to_le32(address & 0xffffffff);
create->max_items = cpu_to_le16(BRCMF_H2D_TXFLOWRING_MAX_ITEM);
create->len_item = cpu_to_le16(BRCMF_H2D_TXFLOWRING_ITEMSIZE);
brcmf_dbg(MSGBUF, "Send Flow Create Req flow ID %d for peer %pM prio %d ifindex %d\n",
flowid, work->da, create->tid, work->ifidx);
err = brcmf_commonring_write_complete(commonring);
brcmf_commonring_unlock(commonring);
if (err) {
brcmf_err("Failed to write commonring\n");
brcmf_msgbuf_remove_flowring(msgbuf, flowid);
return BRCMF_FLOWRING_INVALID_ID;
}
return flowid;
}
static void brcmf_msgbuf_flowring_worker(struct work_struct *work)
{
struct brcmf_msgbuf *msgbuf;
struct brcmf_msgbuf_work_item *create;
msgbuf = container_of(work, struct brcmf_msgbuf, flowring_work);
while ((create = brcmf_msgbuf_dequeue_work(msgbuf))) {
brcmf_msgbuf_flowring_create_worker(msgbuf, create);
kfree(create);
}
}
static u32 brcmf_msgbuf_flowring_create(struct brcmf_msgbuf *msgbuf, int ifidx,
struct sk_buff *skb)
{
struct brcmf_msgbuf_work_item *create;
struct ethhdr *eh = (struct ethhdr *)(skb->data);
u32 flowid;
ulong flags;
create = kzalloc(sizeof(*create), GFP_ATOMIC);
if (create == NULL)
return BRCMF_FLOWRING_INVALID_ID;
flowid = brcmf_flowring_create(msgbuf->flow, eh->h_dest,
skb->priority, ifidx);
if (flowid == BRCMF_FLOWRING_INVALID_ID) {
kfree(create);
return flowid;
}
create->flowid = flowid;
create->ifidx = ifidx;
memcpy(create->sa, eh->h_source, ETH_ALEN);
memcpy(create->da, eh->h_dest, ETH_ALEN);
spin_lock_irqsave(&msgbuf->flowring_work_lock, flags);
list_add_tail(&create->queue, &msgbuf->work_queue);
spin_unlock_irqrestore(&msgbuf->flowring_work_lock, flags);
schedule_work(&msgbuf->flowring_work);
return flowid;
}
static void brcmf_msgbuf_txflow(struct brcmf_msgbuf *msgbuf, u8 flowid)
{
struct brcmf_flowring *flow = msgbuf->flow;
struct brcmf_commonring *commonring;
void *ret_ptr;
u32 count;
struct sk_buff *skb;
dma_addr_t physaddr;
u32 pktid;
struct msgbuf_tx_msghdr *tx_msghdr;
u64 address;
commonring = msgbuf->flowrings[flowid];
if (!brcmf_commonring_write_available(commonring))
return;
brcmf_commonring_lock(commonring);
count = BRCMF_MSGBUF_TX_FLUSH_CNT2 - BRCMF_MSGBUF_TX_FLUSH_CNT1;
while (brcmf_flowring_qlen(flow, flowid)) {
skb = brcmf_flowring_dequeue(flow, flowid);
if (skb == NULL) {
brcmf_err("No SKB, but qlen %d\n",
brcmf_flowring_qlen(flow, flowid));
break;
}
skb_orphan(skb);
if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
msgbuf->tx_pktids, skb, ETH_HLEN,
&physaddr, &pktid)) {
brcmf_flowring_reinsert(flow, flowid, skb);
brcmf_err("No PKTID available !!\n");
break;
}
ret_ptr = brcmf_commonring_reserve_for_write(commonring);
if (!ret_ptr) {
brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
msgbuf->tx_pktids, pktid);
brcmf_flowring_reinsert(flow, flowid, skb);
break;
}
count++;
tx_msghdr = (struct msgbuf_tx_msghdr *)ret_ptr;
tx_msghdr->msg.msgtype = MSGBUF_TYPE_TX_POST;
tx_msghdr->msg.request_id = cpu_to_le32(pktid);
tx_msghdr->msg.ifidx = brcmf_flowring_ifidx_get(flow, flowid);
tx_msghdr->flags = BRCMF_MSGBUF_PKT_FLAGS_FRAME_802_3;
tx_msghdr->flags |= (skb->priority & 0x07) <<
BRCMF_MSGBUF_PKT_FLAGS_PRIO_SHIFT;
tx_msghdr->seg_cnt = 1;
memcpy(tx_msghdr->txhdr, skb->data, ETH_HLEN);
tx_msghdr->data_len = cpu_to_le16(skb->len - ETH_HLEN);
address = (u64)physaddr;
tx_msghdr->data_buf_addr.high_addr = cpu_to_le32(address >> 32);
tx_msghdr->data_buf_addr.low_addr =
cpu_to_le32(address & 0xffffffff);
tx_msghdr->metadata_buf_len = 0;
tx_msghdr->metadata_buf_addr.high_addr = 0;
tx_msghdr->metadata_buf_addr.low_addr = 0;
atomic_inc(&commonring->outstanding_tx);
if (count >= BRCMF_MSGBUF_TX_FLUSH_CNT2) {
brcmf_commonring_write_complete(commonring);
count = 0;
}
}
if (count)
brcmf_commonring_write_complete(commonring);
brcmf_commonring_unlock(commonring);
}
static void brcmf_msgbuf_txflow_worker(struct work_struct *worker)
{
struct brcmf_msgbuf *msgbuf;
u32 flowid;
msgbuf = container_of(worker, struct brcmf_msgbuf, txflow_work);
for_each_set_bit(flowid, msgbuf->flow_map, msgbuf->nrof_flowrings) {
clear_bit(flowid, msgbuf->flow_map);
brcmf_msgbuf_txflow(msgbuf, flowid);
}
}
static int brcmf_msgbuf_schedule_txdata(struct brcmf_msgbuf *msgbuf, u32 flowid,
bool force)
{
struct brcmf_commonring *commonring;
set_bit(flowid, msgbuf->flow_map);
commonring = msgbuf->flowrings[flowid];
if ((force) || (atomic_read(&commonring->outstanding_tx) <
BRCMF_MSGBUF_DELAY_TXWORKER_THRS))
queue_work(msgbuf->txflow_wq, &msgbuf->txflow_work);
return 0;
}
static int brcmf_msgbuf_txdata(struct brcmf_pub *drvr, int ifidx,
u8 offset, struct sk_buff *skb)
{
struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
struct brcmf_flowring *flow = msgbuf->flow;
struct ethhdr *eh = (struct ethhdr *)(skb->data);
u32 flowid;
u32 queue_count;
bool force;
flowid = brcmf_flowring_lookup(flow, eh->h_dest, skb->priority, ifidx);
if (flowid == BRCMF_FLOWRING_INVALID_ID) {
flowid = brcmf_msgbuf_flowring_create(msgbuf, ifidx, skb);
if (flowid == BRCMF_FLOWRING_INVALID_ID)
return -ENOMEM;
}
queue_count = brcmf_flowring_enqueue(flow, flowid, skb);
force = ((queue_count % BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) == 0);
brcmf_msgbuf_schedule_txdata(msgbuf, flowid, force);
return 0;
}
static void
brcmf_msgbuf_configure_addr_mode(struct brcmf_pub *drvr, int ifidx,
enum proto_addr_mode addr_mode)
{
struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
brcmf_flowring_configure_addr_mode(msgbuf->flow, ifidx, addr_mode);
}
static void
brcmf_msgbuf_delete_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
{
struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
brcmf_flowring_delete_peer(msgbuf->flow, ifidx, peer);
}
static void
brcmf_msgbuf_add_tdls_peer(struct brcmf_pub *drvr, int ifidx, u8 peer[ETH_ALEN])
{
struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
brcmf_flowring_add_tdls_peer(msgbuf->flow, ifidx, peer);
}
static void
brcmf_msgbuf_process_ioctl_complete(struct brcmf_msgbuf *msgbuf, void *buf)
{
struct msgbuf_ioctl_resp_hdr *ioctl_resp;
ioctl_resp = (struct msgbuf_ioctl_resp_hdr *)buf;
msgbuf->ioctl_resp_status =
(s16)le16_to_cpu(ioctl_resp->compl_hdr.status);
msgbuf->ioctl_resp_ret_len = le16_to_cpu(ioctl_resp->resp_len);
msgbuf->ioctl_resp_pktid = le32_to_cpu(ioctl_resp->msg.request_id);
brcmf_msgbuf_ioctl_resp_wake(msgbuf);
if (msgbuf->cur_ioctlrespbuf)
msgbuf->cur_ioctlrespbuf--;
brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
}
static void
brcmf_msgbuf_process_txstatus(struct brcmf_msgbuf *msgbuf, void *buf)
{
struct brcmf_commonring *commonring;
struct msgbuf_tx_status *tx_status;
u32 idx;
struct sk_buff *skb;
u16 flowid;
tx_status = (struct msgbuf_tx_status *)buf;
idx = le32_to_cpu(tx_status->msg.request_id);
flowid = le16_to_cpu(tx_status->compl_hdr.flow_ring_id);
flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
msgbuf->tx_pktids, idx);
if (!skb)
return;
set_bit(flowid, msgbuf->txstatus_done_map);
commonring = msgbuf->flowrings[flowid];
atomic_dec(&commonring->outstanding_tx);
brcmf_txfinalize(brcmf_get_ifp(msgbuf->drvr, tx_status->msg.ifidx),
skb, true);
}
static u32 brcmf_msgbuf_rxbuf_data_post(struct brcmf_msgbuf *msgbuf, u32 count)
{
struct brcmf_commonring *commonring;
void *ret_ptr;
struct sk_buff *skb;
u16 alloced;
u32 pktlen;
dma_addr_t physaddr;
struct msgbuf_rx_bufpost *rx_bufpost;
u64 address;
u32 pktid;
u32 i;
commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
count,
&alloced);
if (!ret_ptr) {
brcmf_dbg(MSGBUF, "Failed to reserve space in commonring\n");
return 0;
}
for (i = 0; i < alloced; i++) {
rx_bufpost = (struct msgbuf_rx_bufpost *)ret_ptr;
memset(rx_bufpost, 0, sizeof(*rx_bufpost));
skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
if (skb == NULL) {
brcmf_err("Failed to alloc SKB\n");
brcmf_commonring_write_cancel(commonring, alloced - i);
break;
}
pktlen = skb->len;
if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
msgbuf->rx_pktids, skb, 0,
&physaddr, &pktid)) {
dev_kfree_skb_any(skb);
brcmf_err("No PKTID available !!\n");
brcmf_commonring_write_cancel(commonring, alloced - i);
break;
}
if (msgbuf->rx_metadata_offset) {
address = (u64)physaddr;
rx_bufpost->metadata_buf_len =
cpu_to_le16(msgbuf->rx_metadata_offset);
rx_bufpost->metadata_buf_addr.high_addr =
cpu_to_le32(address >> 32);
rx_bufpost->metadata_buf_addr.low_addr =
cpu_to_le32(address & 0xffffffff);
skb_pull(skb, msgbuf->rx_metadata_offset);
pktlen = skb->len;
physaddr += msgbuf->rx_metadata_offset;
}
rx_bufpost->msg.msgtype = MSGBUF_TYPE_RXBUF_POST;
rx_bufpost->msg.request_id = cpu_to_le32(pktid);
address = (u64)physaddr;
rx_bufpost->data_buf_len = cpu_to_le16((u16)pktlen);
rx_bufpost->data_buf_addr.high_addr =
cpu_to_le32(address >> 32);
rx_bufpost->data_buf_addr.low_addr =
cpu_to_le32(address & 0xffffffff);
ret_ptr += brcmf_commonring_len_item(commonring);
}
if (i)
brcmf_commonring_write_complete(commonring);
return i;
}
static void
brcmf_msgbuf_rxbuf_data_fill(struct brcmf_msgbuf *msgbuf)
{
u32 fillbufs;
u32 retcount;
fillbufs = msgbuf->max_rxbufpost - msgbuf->rxbufpost;
while (fillbufs) {
retcount = brcmf_msgbuf_rxbuf_data_post(msgbuf, fillbufs);
if (!retcount)
break;
msgbuf->rxbufpost += retcount;
fillbufs -= retcount;
}
}
static void
brcmf_msgbuf_update_rxbufpost_count(struct brcmf_msgbuf *msgbuf, u16 rxcnt)
{
msgbuf->rxbufpost -= rxcnt;
if (msgbuf->rxbufpost <= (msgbuf->max_rxbufpost -
BRCMF_MSGBUF_RXBUFPOST_THRESHOLD))
brcmf_msgbuf_rxbuf_data_fill(msgbuf);
}
static u32
brcmf_msgbuf_rxbuf_ctrl_post(struct brcmf_msgbuf *msgbuf, bool event_buf,
u32 count)
{
struct brcmf_commonring *commonring;
void *ret_ptr;
struct sk_buff *skb;
u16 alloced;
u32 pktlen;
dma_addr_t physaddr;
struct msgbuf_rx_ioctl_resp_or_event *rx_bufpost;
u64 address;
u32 pktid;
u32 i;
commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
brcmf_commonring_lock(commonring);
ret_ptr = brcmf_commonring_reserve_for_write_multiple(commonring,
count,
&alloced);
if (!ret_ptr) {
brcmf_err("Failed to reserve space in commonring\n");
brcmf_commonring_unlock(commonring);
return 0;
}
for (i = 0; i < alloced; i++) {
rx_bufpost = (struct msgbuf_rx_ioctl_resp_or_event *)ret_ptr;
memset(rx_bufpost, 0, sizeof(*rx_bufpost));
skb = brcmu_pkt_buf_get_skb(BRCMF_MSGBUF_MAX_PKT_SIZE);
if (skb == NULL) {
brcmf_err("Failed to alloc SKB\n");
brcmf_commonring_write_cancel(commonring, alloced - i);
break;
}
pktlen = skb->len;
if (brcmf_msgbuf_alloc_pktid(msgbuf->drvr->bus_if->dev,
msgbuf->rx_pktids, skb, 0,
&physaddr, &pktid)) {
dev_kfree_skb_any(skb);
brcmf_err("No PKTID available !!\n");
brcmf_commonring_write_cancel(commonring, alloced - i);
break;
}
if (event_buf)
rx_bufpost->msg.msgtype = MSGBUF_TYPE_EVENT_BUF_POST;
else
rx_bufpost->msg.msgtype =
MSGBUF_TYPE_IOCTLRESP_BUF_POST;
rx_bufpost->msg.request_id = cpu_to_le32(pktid);
address = (u64)physaddr;
rx_bufpost->host_buf_len = cpu_to_le16((u16)pktlen);
rx_bufpost->host_buf_addr.high_addr =
cpu_to_le32(address >> 32);
rx_bufpost->host_buf_addr.low_addr =
cpu_to_le32(address & 0xffffffff);
ret_ptr += brcmf_commonring_len_item(commonring);
}
if (i)
brcmf_commonring_write_complete(commonring);
brcmf_commonring_unlock(commonring);
return i;
}
static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf)
{
u32 count;
count = msgbuf->max_ioctlrespbuf - msgbuf->cur_ioctlrespbuf;
count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, false, count);
msgbuf->cur_ioctlrespbuf += count;
}
static void brcmf_msgbuf_rxbuf_event_post(struct brcmf_msgbuf *msgbuf)
{
u32 count;
count = msgbuf->max_eventbuf - msgbuf->cur_eventbuf;
count = brcmf_msgbuf_rxbuf_ctrl_post(msgbuf, true, count);
msgbuf->cur_eventbuf += count;
}
static void
brcmf_msgbuf_rx_skb(struct brcmf_msgbuf *msgbuf, struct sk_buff *skb,
u8 ifidx)
{
struct brcmf_if *ifp;
ifp = brcmf_get_ifp(msgbuf->drvr, ifidx);
if (!ifp || !ifp->ndev) {
brcmf_err("Received pkt for invalid ifidx %d\n", ifidx);
brcmu_pkt_buf_free_skb(skb);
return;
}
brcmf_netif_rx(ifp, skb);
}
static void brcmf_msgbuf_process_event(struct brcmf_msgbuf *msgbuf, void *buf)
{
struct msgbuf_rx_event *event;
u32 idx;
u16 buflen;
struct sk_buff *skb;
event = (struct msgbuf_rx_event *)buf;
idx = le32_to_cpu(event->msg.request_id);
buflen = le16_to_cpu(event->event_data_len);
if (msgbuf->cur_eventbuf)
msgbuf->cur_eventbuf--;
brcmf_msgbuf_rxbuf_event_post(msgbuf);
skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
msgbuf->rx_pktids, idx);
if (!skb)
return;
if (msgbuf->rx_dataoffset)
skb_pull(skb, msgbuf->rx_dataoffset);
skb_trim(skb, buflen);
brcmf_msgbuf_rx_skb(msgbuf, skb, event->msg.ifidx);
}
static void
brcmf_msgbuf_process_rx_complete(struct brcmf_msgbuf *msgbuf, void *buf)
{
struct msgbuf_rx_complete *rx_complete;
struct sk_buff *skb;
u16 data_offset;
u16 buflen;
u32 idx;
brcmf_msgbuf_update_rxbufpost_count(msgbuf, 1);
rx_complete = (struct msgbuf_rx_complete *)buf;
data_offset = le16_to_cpu(rx_complete->data_offset);
buflen = le16_to_cpu(rx_complete->data_len);
idx = le32_to_cpu(rx_complete->msg.request_id);
skb = brcmf_msgbuf_get_pktid(msgbuf->drvr->bus_if->dev,
msgbuf->rx_pktids, idx);
if (!skb)
return;
if (data_offset)
skb_pull(skb, data_offset);
else if (msgbuf->rx_dataoffset)
skb_pull(skb, msgbuf->rx_dataoffset);
skb_trim(skb, buflen);
brcmf_msgbuf_rx_skb(msgbuf, skb, rx_complete->msg.ifidx);
}
static void
brcmf_msgbuf_process_flow_ring_create_response(struct brcmf_msgbuf *msgbuf,
void *buf)
{
struct msgbuf_flowring_create_resp *flowring_create_resp;
u16 status;
u16 flowid;
flowring_create_resp = (struct msgbuf_flowring_create_resp *)buf;
flowid = le16_to_cpu(flowring_create_resp->compl_hdr.flow_ring_id);
flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
status = le16_to_cpu(flowring_create_resp->compl_hdr.status);
if (status) {
brcmf_err("Flowring creation failed, code %d\n", status);
brcmf_msgbuf_remove_flowring(msgbuf, flowid);
return;
}
brcmf_dbg(MSGBUF, "Flowring %d Create response status %d\n", flowid,
status);
brcmf_flowring_open(msgbuf->flow, flowid);
brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
}
static void
brcmf_msgbuf_process_flow_ring_delete_response(struct brcmf_msgbuf *msgbuf,
void *buf)
{
struct msgbuf_flowring_delete_resp *flowring_delete_resp;
u16 status;
u16 flowid;
flowring_delete_resp = (struct msgbuf_flowring_delete_resp *)buf;
flowid = le16_to_cpu(flowring_delete_resp->compl_hdr.flow_ring_id);
flowid -= BRCMF_NROF_H2D_COMMON_MSGRINGS;
status = le16_to_cpu(flowring_delete_resp->compl_hdr.status);
if (status) {
brcmf_err("Flowring deletion failed, code %d\n", status);
brcmf_flowring_delete(msgbuf->flow, flowid);
return;
}
brcmf_dbg(MSGBUF, "Flowring %d Delete response status %d\n", flowid,
status);
brcmf_msgbuf_remove_flowring(msgbuf, flowid);
}
static void brcmf_msgbuf_process_msgtype(struct brcmf_msgbuf *msgbuf, void *buf)
{
struct msgbuf_common_hdr *msg;
msg = (struct msgbuf_common_hdr *)buf;
switch (msg->msgtype) {
case MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT:
brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_CREATE_CMPLT\n");
brcmf_msgbuf_process_flow_ring_create_response(msgbuf, buf);
break;
case MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT:
brcmf_dbg(MSGBUF, "MSGBUF_TYPE_FLOW_RING_DELETE_CMPLT\n");
brcmf_msgbuf_process_flow_ring_delete_response(msgbuf, buf);
break;
case MSGBUF_TYPE_IOCTLPTR_REQ_ACK:
brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTLPTR_REQ_ACK\n");
break;
case MSGBUF_TYPE_IOCTL_CMPLT:
brcmf_dbg(MSGBUF, "MSGBUF_TYPE_IOCTL_CMPLT\n");
brcmf_msgbuf_process_ioctl_complete(msgbuf, buf);
break;
case MSGBUF_TYPE_WL_EVENT:
brcmf_dbg(MSGBUF, "MSGBUF_TYPE_WL_EVENT\n");
brcmf_msgbuf_process_event(msgbuf, buf);
break;
case MSGBUF_TYPE_TX_STATUS:
brcmf_dbg(MSGBUF, "MSGBUF_TYPE_TX_STATUS\n");
brcmf_msgbuf_process_txstatus(msgbuf, buf);
break;
case MSGBUF_TYPE_RX_CMPLT:
brcmf_dbg(MSGBUF, "MSGBUF_TYPE_RX_CMPLT\n");
brcmf_msgbuf_process_rx_complete(msgbuf, buf);
break;
default:
brcmf_err("Unsupported msgtype %d\n", msg->msgtype);
break;
}
}
static void brcmf_msgbuf_process_rx(struct brcmf_msgbuf *msgbuf,
struct brcmf_commonring *commonring)
{
void *buf;
u16 count;
u16 processed;
again:
buf = brcmf_commonring_get_read_ptr(commonring, &count);
if (buf == NULL)
return;
processed = 0;
while (count) {
brcmf_msgbuf_process_msgtype(msgbuf,
buf + msgbuf->rx_dataoffset);
buf += brcmf_commonring_len_item(commonring);
processed++;
if (processed == BRCMF_MSGBUF_UPDATE_RX_PTR_THRS) {
brcmf_commonring_read_complete(commonring, processed);
processed = 0;
}
count--;
}
if (processed)
brcmf_commonring_read_complete(commonring, processed);
if (commonring->r_ptr == 0)
goto again;
}
int brcmf_proto_msgbuf_rx_trigger(struct device *dev)
{
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
struct brcmf_commonring *commonring;
void *buf;
u32 flowid;
int qlen;
buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
brcmf_msgbuf_process_rx(msgbuf, buf);
buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
brcmf_msgbuf_process_rx(msgbuf, buf);
buf = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
brcmf_msgbuf_process_rx(msgbuf, buf);
for_each_set_bit(flowid, msgbuf->txstatus_done_map,
msgbuf->nrof_flowrings) {
clear_bit(flowid, msgbuf->txstatus_done_map);
commonring = msgbuf->flowrings[flowid];
qlen = brcmf_flowring_qlen(msgbuf->flow, flowid);
if ((qlen > BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS) ||
((qlen) && (atomic_read(&commonring->outstanding_tx) <
BRCMF_MSGBUF_TRICKLE_TXWORKER_THRS)))
brcmf_msgbuf_schedule_txdata(msgbuf, flowid, true);
}
return 0;
}
void brcmf_msgbuf_delete_flowring(struct brcmf_pub *drvr, u8 flowid)
{
struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
struct msgbuf_tx_flowring_delete_req *delete;
struct brcmf_commonring *commonring;
void *ret_ptr;
u8 ifidx;
int err;
commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
brcmf_commonring_lock(commonring);
ret_ptr = brcmf_commonring_reserve_for_write(commonring);
if (!ret_ptr) {
brcmf_err("FW unaware, flowring will be removed !!\n");
brcmf_commonring_unlock(commonring);
brcmf_msgbuf_remove_flowring(msgbuf, flowid);
return;
}
delete = (struct msgbuf_tx_flowring_delete_req *)ret_ptr;
ifidx = brcmf_flowring_ifidx_get(msgbuf->flow, flowid);
delete->msg.msgtype = MSGBUF_TYPE_FLOW_RING_DELETE;
delete->msg.ifidx = ifidx;
delete->msg.request_id = 0;
delete->flow_ring_id = cpu_to_le16(flowid +
BRCMF_NROF_H2D_COMMON_MSGRINGS);
delete->reason = 0;
brcmf_dbg(MSGBUF, "Send Flow Delete Req flow ID %d, ifindex %d\n",
flowid, ifidx);
err = brcmf_commonring_write_complete(commonring);
brcmf_commonring_unlock(commonring);
if (err) {
brcmf_err("Failed to submit RING_DELETE, flowring will be removed\n");
brcmf_msgbuf_remove_flowring(msgbuf, flowid);
}
}
#ifdef DEBUG
static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
{
struct brcmf_bus *bus_if = dev_get_drvdata(seq->private);
struct brcmf_pub *drvr = bus_if->drvr;
struct brcmf_msgbuf *msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
struct brcmf_commonring *commonring;
u16 i;
struct brcmf_flowring_ring *ring;
struct brcmf_flowring_hash *hash;
commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_CONTROL_SUBMIT];
seq_printf(seq, "h2d_ctl_submit: rp %4u, wp %4u, depth %4u\n",
commonring->r_ptr, commonring->w_ptr, commonring->depth);
commonring = msgbuf->commonrings[BRCMF_H2D_MSGRING_RXPOST_SUBMIT];
seq_printf(seq, "h2d_rx_submit: rp %4u, wp %4u, depth %4u\n",
commonring->r_ptr, commonring->w_ptr, commonring->depth);
commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_CONTROL_COMPLETE];
seq_printf(seq, "d2h_ctl_cmplt: rp %4u, wp %4u, depth %4u\n",
commonring->r_ptr, commonring->w_ptr, commonring->depth);
commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_TX_COMPLETE];
seq_printf(seq, "d2h_tx_cmplt: rp %4u, wp %4u, depth %4u\n",
commonring->r_ptr, commonring->w_ptr, commonring->depth);
commonring = msgbuf->commonrings[BRCMF_D2H_MSGRING_RX_COMPLETE];
seq_printf(seq, "d2h_rx_cmplt: rp %4u, wp %4u, depth %4u\n",
commonring->r_ptr, commonring->w_ptr, commonring->depth);
seq_printf(seq, "\nh2d_flowrings: depth %u\n",
BRCMF_H2D_TXFLOWRING_MAX_ITEM);
seq_puts(seq, "Active flowrings:\n");
hash = msgbuf->flow->hash;
for (i = 0; i < msgbuf->flow->nrofrings; i++) {
if (!msgbuf->flow->rings[i])
continue;
ring = msgbuf->flow->rings[i];
if (ring->status != RING_OPEN)
continue;
commonring = msgbuf->flowrings[i];
hash = &msgbuf->flow->hash[ring->hash_id];
seq_printf(seq, "id %3u: rp %4u, wp %4u, qlen %4u, blocked %u\n"
" ifidx %u, fifo %u, da %pM\n",
i, commonring->r_ptr, commonring->w_ptr,
skb_queue_len(&ring->skblist), ring->blocked,
hash->ifidx, hash->fifo, hash->mac);
}
return 0;
}
#else
static int brcmf_msgbuf_stats_read(struct seq_file *seq, void *data)
{
return 0;
}
#endif
int brcmf_proto_msgbuf_attach(struct brcmf_pub *drvr)
{
struct brcmf_bus_msgbuf *if_msgbuf;
struct brcmf_msgbuf *msgbuf;
u64 address;
u32 count;
if_msgbuf = drvr->bus_if->msgbuf;
msgbuf = kzalloc(sizeof(*msgbuf), GFP_KERNEL);
if (!msgbuf)
goto fail;
msgbuf->txflow_wq = create_singlethread_workqueue("msgbuf_txflow");
if (msgbuf->txflow_wq == NULL) {
brcmf_err("workqueue creation failed\n");
goto fail;
}
INIT_WORK(&msgbuf->txflow_work, brcmf_msgbuf_txflow_worker);
count = BITS_TO_LONGS(if_msgbuf->nrof_flowrings);
count = count * sizeof(unsigned long);
msgbuf->flow_map = kzalloc(count, GFP_KERNEL);
if (!msgbuf->flow_map)
goto fail;
msgbuf->txstatus_done_map = kzalloc(count, GFP_KERNEL);
if (!msgbuf->txstatus_done_map)
goto fail;
msgbuf->drvr = drvr;
msgbuf->ioctbuf = dma_alloc_coherent(drvr->bus_if->dev,
BRCMF_TX_IOCTL_MAX_MSG_SIZE,
&msgbuf->ioctbuf_handle,
GFP_KERNEL);
if (!msgbuf->ioctbuf)
goto fail;
address = (u64)msgbuf->ioctbuf_handle;
msgbuf->ioctbuf_phys_hi = address >> 32;
msgbuf->ioctbuf_phys_lo = address & 0xffffffff;
drvr->proto->hdrpull = brcmf_msgbuf_hdrpull;
drvr->proto->query_dcmd = brcmf_msgbuf_query_dcmd;
drvr->proto->set_dcmd = brcmf_msgbuf_set_dcmd;
drvr->proto->txdata = brcmf_msgbuf_txdata;
drvr->proto->configure_addr_mode = brcmf_msgbuf_configure_addr_mode;
drvr->proto->delete_peer = brcmf_msgbuf_delete_peer;
drvr->proto->add_tdls_peer = brcmf_msgbuf_add_tdls_peer;
drvr->proto->pd = msgbuf;
init_waitqueue_head(&msgbuf->ioctl_resp_wait);
msgbuf->commonrings =
(struct brcmf_commonring **)if_msgbuf->commonrings;
msgbuf->flowrings = (struct brcmf_commonring **)if_msgbuf->flowrings;
msgbuf->nrof_flowrings = if_msgbuf->nrof_flowrings;
msgbuf->flowring_dma_handle = kzalloc(msgbuf->nrof_flowrings *
sizeof(*msgbuf->flowring_dma_handle), GFP_KERNEL);
if (!msgbuf->flowring_dma_handle)
goto fail;
msgbuf->rx_dataoffset = if_msgbuf->rx_dataoffset;
msgbuf->max_rxbufpost = if_msgbuf->max_rxbufpost;
msgbuf->max_ioctlrespbuf = BRCMF_MSGBUF_MAX_IOCTLRESPBUF_POST;
msgbuf->max_eventbuf = BRCMF_MSGBUF_MAX_EVENTBUF_POST;
msgbuf->tx_pktids = brcmf_msgbuf_init_pktids(NR_TX_PKTIDS,
DMA_TO_DEVICE);
if (!msgbuf->tx_pktids)
goto fail;
msgbuf->rx_pktids = brcmf_msgbuf_init_pktids(NR_RX_PKTIDS,
DMA_FROM_DEVICE);
if (!msgbuf->rx_pktids)
goto fail;
msgbuf->flow = brcmf_flowring_attach(drvr->bus_if->dev,
if_msgbuf->nrof_flowrings);
if (!msgbuf->flow)
goto fail;
brcmf_dbg(MSGBUF, "Feeding buffers, rx data %d, rx event %d, rx ioctl resp %d\n",
msgbuf->max_rxbufpost, msgbuf->max_eventbuf,
msgbuf->max_ioctlrespbuf);
count = 0;
do {
brcmf_msgbuf_rxbuf_data_fill(msgbuf);
if (msgbuf->max_rxbufpost != msgbuf->rxbufpost)
msleep(10);
else
break;
count++;
} while (count < 10);
brcmf_msgbuf_rxbuf_event_post(msgbuf);
brcmf_msgbuf_rxbuf_ioctlresp_post(msgbuf);
INIT_WORK(&msgbuf->flowring_work, brcmf_msgbuf_flowring_worker);
spin_lock_init(&msgbuf->flowring_work_lock);
INIT_LIST_HEAD(&msgbuf->work_queue);
brcmf_debugfs_add_entry(drvr, "msgbuf_stats", brcmf_msgbuf_stats_read);
return 0;
fail:
if (msgbuf) {
kfree(msgbuf->flow_map);
kfree(msgbuf->txstatus_done_map);
brcmf_msgbuf_release_pktids(msgbuf);
kfree(msgbuf->flowring_dma_handle);
if (msgbuf->ioctbuf)
dma_free_coherent(drvr->bus_if->dev,
BRCMF_TX_IOCTL_MAX_MSG_SIZE,
msgbuf->ioctbuf,
msgbuf->ioctbuf_handle);
kfree(msgbuf);
}
return -ENOMEM;
}
void brcmf_proto_msgbuf_detach(struct brcmf_pub *drvr)
{
struct brcmf_msgbuf *msgbuf;
struct brcmf_msgbuf_work_item *work;
brcmf_dbg(TRACE, "Enter\n");
if (drvr->proto->pd) {
msgbuf = (struct brcmf_msgbuf *)drvr->proto->pd;
cancel_work_sync(&msgbuf->flowring_work);
while (!list_empty(&msgbuf->work_queue)) {
work = list_first_entry(&msgbuf->work_queue,
struct brcmf_msgbuf_work_item,
queue);
list_del(&work->queue);
kfree(work);
}
kfree(msgbuf->flow_map);
kfree(msgbuf->txstatus_done_map);
if (msgbuf->txflow_wq)
destroy_workqueue(msgbuf->txflow_wq);
brcmf_flowring_detach(msgbuf->flow);
dma_free_coherent(drvr->bus_if->dev,
BRCMF_TX_IOCTL_MAX_MSG_SIZE,
msgbuf->ioctbuf, msgbuf->ioctbuf_handle);
brcmf_msgbuf_release_pktids(msgbuf);
kfree(msgbuf->flowring_dma_handle);
kfree(msgbuf);
drvr->proto->pd = NULL;
}
}