M7350/kernel/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
2024-09-09 08:52:07 +00:00

1217 lines
29 KiB
C

/*
* Copyright (c) 2010 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/kthread.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/mmc/sdio_func.h>
#include <linux/random.h>
#include <linux/spinlock.h>
#include <linux/ethtool.h>
#include <linux/fcntl.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/hardirq.h>
#include <linux/mutex.h>
#include <linux/wait.h>
#include <linux/module.h>
#include <net/cfg80211.h>
#include <net/rtnetlink.h>
#include <defs.h>
#include <brcmu_utils.h>
#include <brcmu_wifi.h>
#include "dhd.h"
#include "dhd_bus.h"
#include "dhd_proto.h"
#include "dhd_dbg.h"
#include "wl_cfg80211.h"
MODULE_AUTHOR("Broadcom Corporation");
MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac driver.");
MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac cards");
MODULE_LICENSE("Dual BSD/GPL");
/* Interface control information */
struct brcmf_if {
struct brcmf_pub *drvr; /* back pointer to brcmf_pub */
/* OS/stack specifics */
struct net_device *ndev;
struct net_device_stats stats;
int idx; /* iface idx in dongle */
u8 mac_addr[ETH_ALEN]; /* assigned MAC address */
};
/* Error bits */
int brcmf_msg_level = BRCMF_ERROR_VAL;
module_param(brcmf_msg_level, int, 0);
int brcmf_ifname2idx(struct brcmf_pub *drvr, char *name)
{
int i = BRCMF_MAX_IFS;
struct brcmf_if *ifp;
if (name == NULL || *name == '\0')
return 0;
while (--i > 0) {
ifp = drvr->iflist[i];
if (ifp && !strncmp(ifp->ndev->name, name, IFNAMSIZ))
break;
}
brcmf_dbg(TRACE, "return idx %d for \"%s\"\n", i, name);
return i; /* default - the primary interface */
}
char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx)
{
if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) {
brcmf_dbg(ERROR, "ifidx %d out of range\n", ifidx);
return "<if_bad>";
}
if (drvr->iflist[ifidx] == NULL) {
brcmf_dbg(ERROR, "null i/f %d\n", ifidx);
return "<if_null>";
}
if (drvr->iflist[ifidx]->ndev)
return drvr->iflist[ifidx]->ndev->name;
return "<if_none>";
}
static void _brcmf_set_multicast_list(struct work_struct *work)
{
struct net_device *ndev;
struct netdev_hw_addr *ha;
u32 dcmd_value, cnt;
__le32 cnt_le;
__le32 dcmd_le_value;
struct brcmf_dcmd dcmd;
char *buf, *bufp;
uint buflen;
int ret;
struct brcmf_pub *drvr = container_of(work, struct brcmf_pub,
multicast_work);
ndev = drvr->iflist[0]->ndev;
cnt = netdev_mc_count(ndev);
/* Determine initial value of allmulti flag */
dcmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false;
/* Send down the multicast list first. */
buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETH_ALEN);
bufp = buf = kmalloc(buflen, GFP_ATOMIC);
if (!bufp)
return;
strcpy(bufp, "mcast_list");
bufp += strlen("mcast_list") + 1;
cnt_le = cpu_to_le32(cnt);
memcpy(bufp, &cnt_le, sizeof(cnt));
bufp += sizeof(cnt_le);
netdev_for_each_mc_addr(ha, ndev) {
if (!cnt)
break;
memcpy(bufp, ha->addr, ETH_ALEN);
bufp += ETH_ALEN;
cnt--;
}
memset(&dcmd, 0, sizeof(dcmd));
dcmd.cmd = BRCMF_C_SET_VAR;
dcmd.buf = buf;
dcmd.len = buflen;
dcmd.set = true;
ret = brcmf_proto_dcmd(drvr, 0, &dcmd, dcmd.len);
if (ret < 0) {
brcmf_dbg(ERROR, "%s: set mcast_list failed, cnt %d\n",
brcmf_ifname(drvr, 0), cnt);
dcmd_value = cnt ? true : dcmd_value;
}
kfree(buf);
/* Now send the allmulti setting. This is based on the setting in the
* net_device flags, but might be modified above to be turned on if we
* were trying to set some addresses and dongle rejected it...
*/
buflen = sizeof("allmulti") + sizeof(dcmd_value);
buf = kmalloc(buflen, GFP_ATOMIC);
if (!buf)
return;
dcmd_le_value = cpu_to_le32(dcmd_value);
if (!brcmf_c_mkiovar
("allmulti", (void *)&dcmd_le_value,
sizeof(dcmd_le_value), buf, buflen)) {
brcmf_dbg(ERROR, "%s: mkiovar failed for allmulti, datalen %d buflen %u\n",
brcmf_ifname(drvr, 0),
(int)sizeof(dcmd_value), buflen);
kfree(buf);
return;
}
memset(&dcmd, 0, sizeof(dcmd));
dcmd.cmd = BRCMF_C_SET_VAR;
dcmd.buf = buf;
dcmd.len = buflen;
dcmd.set = true;
ret = brcmf_proto_dcmd(drvr, 0, &dcmd, dcmd.len);
if (ret < 0) {
brcmf_dbg(ERROR, "%s: set allmulti %d failed\n",
brcmf_ifname(drvr, 0),
le32_to_cpu(dcmd_le_value));
}
kfree(buf);
/* Finally, pick up the PROMISC flag as well, like the NIC
driver does */
dcmd_value = (ndev->flags & IFF_PROMISC) ? true : false;
dcmd_le_value = cpu_to_le32(dcmd_value);
memset(&dcmd, 0, sizeof(dcmd));
dcmd.cmd = BRCMF_C_SET_PROMISC;
dcmd.buf = &dcmd_le_value;
dcmd.len = sizeof(dcmd_le_value);
dcmd.set = true;
ret = brcmf_proto_dcmd(drvr, 0, &dcmd, dcmd.len);
if (ret < 0) {
brcmf_dbg(ERROR, "%s: set promisc %d failed\n",
brcmf_ifname(drvr, 0),
le32_to_cpu(dcmd_le_value));
}
}
static void
_brcmf_set_mac_address(struct work_struct *work)
{
char buf[32];
struct brcmf_dcmd dcmd;
int ret;
struct brcmf_pub *drvr = container_of(work, struct brcmf_pub,
setmacaddr_work);
brcmf_dbg(TRACE, "enter\n");
if (!brcmf_c_mkiovar("cur_etheraddr", (char *)drvr->macvalue,
ETH_ALEN, buf, 32)) {
brcmf_dbg(ERROR, "%s: mkiovar failed for cur_etheraddr\n",
brcmf_ifname(drvr, 0));
return;
}
memset(&dcmd, 0, sizeof(dcmd));
dcmd.cmd = BRCMF_C_SET_VAR;
dcmd.buf = buf;
dcmd.len = 32;
dcmd.set = true;
ret = brcmf_proto_dcmd(drvr, 0, &dcmd, dcmd.len);
if (ret < 0)
brcmf_dbg(ERROR, "%s: set cur_etheraddr failed\n",
brcmf_ifname(drvr, 0));
else
memcpy(drvr->iflist[0]->ndev->dev_addr,
drvr->macvalue, ETH_ALEN);
return;
}
static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
struct sockaddr *sa = (struct sockaddr *)addr;
memcpy(&drvr->macvalue, sa->sa_data, ETH_ALEN);
schedule_work(&drvr->setmacaddr_work);
return 0;
}
static void brcmf_netdev_set_multicast_list(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
schedule_work(&drvr->multicast_work);
}
int brcmf_sendpkt(struct brcmf_pub *drvr, int ifidx, struct sk_buff *pktbuf)
{
/* Reject if down */
if (!drvr->bus_if->drvr_up || (drvr->bus_if->state == BRCMF_BUS_DOWN))
return -ENODEV;
/* Update multicast statistic */
if (pktbuf->len >= ETH_ALEN) {
u8 *pktdata = (u8 *) (pktbuf->data);
struct ethhdr *eh = (struct ethhdr *)pktdata;
if (is_multicast_ether_addr(eh->h_dest))
drvr->tx_multicast++;
if (ntohs(eh->h_proto) == ETH_P_PAE)
atomic_inc(&drvr->pend_8021x_cnt);
}
/* If the protocol uses a data header, apply it */
brcmf_proto_hdrpush(drvr, ifidx, pktbuf);
/* Use bus module to send data frame */
return drvr->bus_if->brcmf_bus_txdata(drvr->dev, pktbuf);
}
static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *ndev)
{
int ret;
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
brcmf_dbg(TRACE, "Enter\n");
/* Reject if down */
if (!drvr->bus_if->drvr_up ||
(drvr->bus_if->state == BRCMF_BUS_DOWN)) {
brcmf_dbg(ERROR, "xmit rejected drvup=%d state=%d\n",
drvr->bus_if->drvr_up,
drvr->bus_if->state);
netif_stop_queue(ndev);
return -ENODEV;
}
if (!drvr->iflist[ifp->idx]) {
brcmf_dbg(ERROR, "bad ifidx %d\n", ifp->idx);
netif_stop_queue(ndev);
return -ENODEV;
}
/* Make sure there's enough room for any header */
if (skb_headroom(skb) < drvr->hdrlen) {
struct sk_buff *skb2;
brcmf_dbg(INFO, "%s: insufficient headroom\n",
brcmf_ifname(drvr, ifp->idx));
drvr->bus_if->tx_realloc++;
skb2 = skb_realloc_headroom(skb, drvr->hdrlen);
dev_kfree_skb(skb);
skb = skb2;
if (skb == NULL) {
brcmf_dbg(ERROR, "%s: skb_realloc_headroom failed\n",
brcmf_ifname(drvr, ifp->idx));
ret = -ENOMEM;
goto done;
}
}
ret = brcmf_sendpkt(drvr, ifp->idx, skb);
done:
if (ret)
drvr->bus_if->dstats.tx_dropped++;
else
drvr->bus_if->dstats.tx_packets++;
/* Return ok: we always eat the packet */
return 0;
}
void brcmf_txflowcontrol(struct device *dev, int ifidx, bool state)
{
struct net_device *ndev;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
brcmf_dbg(TRACE, "Enter\n");
ndev = drvr->iflist[ifidx]->ndev;
if (state == ON)
netif_stop_queue(ndev);
else
netif_wake_queue(ndev);
}
static int brcmf_host_event(struct brcmf_pub *drvr, int *ifidx,
void *pktdata, struct brcmf_event_msg *event,
void **data)
{
int bcmerror = 0;
bcmerror = brcmf_c_host_event(drvr, ifidx, pktdata, event, data);
if (bcmerror != 0)
return bcmerror;
if (drvr->iflist[*ifidx]->ndev)
brcmf_cfg80211_event(drvr->iflist[*ifidx]->ndev,
event, *data);
return bcmerror;
}
void brcmf_rx_frame(struct device *dev, int ifidx,
struct sk_buff_head *skb_list)
{
unsigned char *eth;
uint len;
void *data;
struct sk_buff *skb, *pnext;
struct brcmf_if *ifp;
struct brcmf_event_msg event;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
brcmf_dbg(TRACE, "Enter\n");
skb_queue_walk_safe(skb_list, skb, pnext) {
skb_unlink(skb, skb_list);
/* Get the protocol, maintain skb around eth_type_trans()
* The main reason for this hack is for the limitation of
* Linux 2.4 where 'eth_type_trans' uses the
* 'net->hard_header_len'
* to perform skb_pull inside vs ETH_HLEN. Since to avoid
* coping of the packet coming from the network stack to add
* BDC, Hardware header etc, during network interface
* registration
* we set the 'net->hard_header_len' to ETH_HLEN + extra space
* required
* for BDC, Hardware header etc. and not just the ETH_HLEN
*/
eth = skb->data;
len = skb->len;
ifp = drvr->iflist[ifidx];
if (ifp == NULL)
ifp = drvr->iflist[0];
if (!ifp || !ifp->ndev ||
ifp->ndev->reg_state != NETREG_REGISTERED) {
brcmu_pkt_buf_free_skb(skb);
continue;
}
skb->dev = ifp->ndev;
skb->protocol = eth_type_trans(skb, skb->dev);
if (skb->pkt_type == PACKET_MULTICAST)
bus_if->dstats.multicast++;
skb->data = eth;
skb->len = len;
/* Strip header, count, deliver upward */
skb_pull(skb, ETH_HLEN);
/* Process special event packets and then discard them */
if (ntohs(skb->protocol) == ETH_P_LINK_CTL)
brcmf_host_event(drvr, &ifidx,
skb_mac_header(skb),
&event, &data);
if (drvr->iflist[ifidx]) {
ifp = drvr->iflist[ifidx];
ifp->ndev->last_rx = jiffies;
}
bus_if->dstats.rx_bytes += skb->len;
bus_if->dstats.rx_packets++; /* Local count */
if (in_interrupt())
netif_rx(skb);
else
/* If the receive is not processed inside an ISR,
* the softirqd must be woken explicitly to service
* the NET_RX_SOFTIRQ. In 2.6 kernels, this is handled
* by netif_rx_ni(), but in earlier kernels, we need
* to do it manually.
*/
netif_rx_ni(skb);
}
}
void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success)
{
uint ifidx;
struct ethhdr *eh;
u16 type;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
brcmf_proto_hdrpull(dev, &ifidx, txp);
eh = (struct ethhdr *)(txp->data);
type = ntohs(eh->h_proto);
if (type == ETH_P_PAE)
atomic_dec(&drvr->pend_8021x_cnt);
}
static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_bus *bus_if = ifp->drvr->bus_if;
brcmf_dbg(TRACE, "Enter\n");
/* Copy dongle stats to net device stats */
ifp->stats.rx_packets = bus_if->dstats.rx_packets;
ifp->stats.tx_packets = bus_if->dstats.tx_packets;
ifp->stats.rx_bytes = bus_if->dstats.rx_bytes;
ifp->stats.tx_bytes = bus_if->dstats.tx_bytes;
ifp->stats.rx_errors = bus_if->dstats.rx_errors;
ifp->stats.tx_errors = bus_if->dstats.tx_errors;
ifp->stats.rx_dropped = bus_if->dstats.rx_dropped;
ifp->stats.tx_dropped = bus_if->dstats.tx_dropped;
ifp->stats.multicast = bus_if->dstats.multicast;
return &ifp->stats;
}
/* Retrieve current toe component enables, which are kept
as a bitmap in toe_ol iovar */
static int brcmf_toe_get(struct brcmf_pub *drvr, int ifidx, u32 *toe_ol)
{
struct brcmf_dcmd dcmd;
__le32 toe_le;
char buf[32];
int ret;
memset(&dcmd, 0, sizeof(dcmd));
dcmd.cmd = BRCMF_C_GET_VAR;
dcmd.buf = buf;
dcmd.len = (uint) sizeof(buf);
dcmd.set = false;
strcpy(buf, "toe_ol");
ret = brcmf_proto_dcmd(drvr, ifidx, &dcmd, dcmd.len);
if (ret < 0) {
/* Check for older dongle image that doesn't support toe_ol */
if (ret == -EIO) {
brcmf_dbg(ERROR, "%s: toe not supported by device\n",
brcmf_ifname(drvr, ifidx));
return -EOPNOTSUPP;
}
brcmf_dbg(INFO, "%s: could not get toe_ol: ret=%d\n",
brcmf_ifname(drvr, ifidx), ret);
return ret;
}
memcpy(&toe_le, buf, sizeof(u32));
*toe_ol = le32_to_cpu(toe_le);
return 0;
}
/* Set current toe component enables in toe_ol iovar,
and set toe global enable iovar */
static int brcmf_toe_set(struct brcmf_pub *drvr, int ifidx, u32 toe_ol)
{
struct brcmf_dcmd dcmd;
char buf[32];
int ret;
__le32 toe_le = cpu_to_le32(toe_ol);
memset(&dcmd, 0, sizeof(dcmd));
dcmd.cmd = BRCMF_C_SET_VAR;
dcmd.buf = buf;
dcmd.len = (uint) sizeof(buf);
dcmd.set = true;
/* Set toe_ol as requested */
strcpy(buf, "toe_ol");
memcpy(&buf[sizeof("toe_ol")], &toe_le, sizeof(u32));
ret = brcmf_proto_dcmd(drvr, ifidx, &dcmd, dcmd.len);
if (ret < 0) {
brcmf_dbg(ERROR, "%s: could not set toe_ol: ret=%d\n",
brcmf_ifname(drvr, ifidx), ret);
return ret;
}
/* Enable toe globally only if any components are enabled. */
toe_le = cpu_to_le32(toe_ol != 0);
strcpy(buf, "toe");
memcpy(&buf[sizeof("toe")], &toe_le, sizeof(u32));
ret = brcmf_proto_dcmd(drvr, ifidx, &dcmd, dcmd.len);
if (ret < 0) {
brcmf_dbg(ERROR, "%s: could not set toe: ret=%d\n",
brcmf_ifname(drvr, ifidx), ret);
return ret;
}
return 0;
}
static void brcmf_ethtool_get_drvinfo(struct net_device *ndev,
struct ethtool_drvinfo *info)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
sprintf(info->driver, KBUILD_MODNAME);
sprintf(info->version, "%lu", drvr->drv_version);
sprintf(info->bus_info, "%s", dev_name(drvr->dev));
}
static const struct ethtool_ops brcmf_ethtool_ops = {
.get_drvinfo = brcmf_ethtool_get_drvinfo,
};
static int brcmf_ethtool(struct brcmf_pub *drvr, void __user *uaddr)
{
struct ethtool_drvinfo info;
char drvname[sizeof(info.driver)];
u32 cmd;
struct ethtool_value edata;
u32 toe_cmpnt, csum_dir;
int ret;
brcmf_dbg(TRACE, "Enter\n");
/* all ethtool calls start with a cmd word */
if (copy_from_user(&cmd, uaddr, sizeof(u32)))
return -EFAULT;
switch (cmd) {
case ETHTOOL_GDRVINFO:
/* Copy out any request driver name */
if (copy_from_user(&info, uaddr, sizeof(info)))
return -EFAULT;
strncpy(drvname, info.driver, sizeof(info.driver));
drvname[sizeof(info.driver) - 1] = '\0';
/* clear struct for return */
memset(&info, 0, sizeof(info));
info.cmd = cmd;
/* if requested, identify ourselves */
if (strcmp(drvname, "?dhd") == 0) {
sprintf(info.driver, "dhd");
strcpy(info.version, BRCMF_VERSION_STR);
}
/* otherwise, require dongle to be up */
else if (!drvr->bus_if->drvr_up) {
brcmf_dbg(ERROR, "dongle is not up\n");
return -ENODEV;
}
/* finally, report dongle driver type */
else if (drvr->iswl)
sprintf(info.driver, "wl");
else
sprintf(info.driver, "xx");
sprintf(info.version, "%lu", drvr->drv_version);
if (copy_to_user(uaddr, &info, sizeof(info)))
return -EFAULT;
brcmf_dbg(CTL, "given %*s, returning %s\n",
(int)sizeof(drvname), drvname, info.driver);
break;
/* Get toe offload components from dongle */
case ETHTOOL_GRXCSUM:
case ETHTOOL_GTXCSUM:
ret = brcmf_toe_get(drvr, 0, &toe_cmpnt);
if (ret < 0)
return ret;
csum_dir =
(cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
edata.cmd = cmd;
edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;
if (copy_to_user(uaddr, &edata, sizeof(edata)))
return -EFAULT;
break;
/* Set toe offload components in dongle */
case ETHTOOL_SRXCSUM:
case ETHTOOL_STXCSUM:
if (copy_from_user(&edata, uaddr, sizeof(edata)))
return -EFAULT;
/* Read the current settings, update and write back */
ret = brcmf_toe_get(drvr, 0, &toe_cmpnt);
if (ret < 0)
return ret;
csum_dir =
(cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;
if (edata.data != 0)
toe_cmpnt |= csum_dir;
else
toe_cmpnt &= ~csum_dir;
ret = brcmf_toe_set(drvr, 0, toe_cmpnt);
if (ret < 0)
return ret;
/* If setting TX checksum mode, tell Linux the new mode */
if (cmd == ETHTOOL_STXCSUM) {
if (edata.data)
drvr->iflist[0]->ndev->features |=
NETIF_F_IP_CSUM;
else
drvr->iflist[0]->ndev->features &=
~NETIF_F_IP_CSUM;
}
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static int brcmf_netdev_ioctl_entry(struct net_device *ndev, struct ifreq *ifr,
int cmd)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifp->idx, cmd);
if (!drvr->iflist[ifp->idx])
return -1;
if (cmd == SIOCETHTOOL)
return brcmf_ethtool(drvr, ifr->ifr_data);
return -EOPNOTSUPP;
}
/* called only from within this driver. Sends a command to the dongle. */
s32 brcmf_exec_dcmd(struct net_device *ndev, u32 cmd, void *arg, u32 len)
{
struct brcmf_dcmd dcmd;
s32 err = 0;
int buflen = 0;
bool is_set_key_cmd;
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
memset(&dcmd, 0, sizeof(dcmd));
dcmd.cmd = cmd;
dcmd.buf = arg;
dcmd.len = len;
if (dcmd.buf != NULL)
buflen = min_t(uint, dcmd.len, BRCMF_DCMD_MAXLEN);
/* send to dongle (must be up, and wl) */
if ((drvr->bus_if->state != BRCMF_BUS_DATA)) {
brcmf_dbg(ERROR, "DONGLE_DOWN\n");
err = -EIO;
goto done;
}
if (!drvr->iswl) {
err = -EIO;
goto done;
}
/*
* Intercept BRCMF_C_SET_KEY CMD - serialize M4 send and
* set key CMD to prevent M4 encryption.
*/
is_set_key_cmd = ((dcmd.cmd == BRCMF_C_SET_KEY) ||
((dcmd.cmd == BRCMF_C_SET_VAR) &&
!(strncmp("wsec_key", dcmd.buf, 9))) ||
((dcmd.cmd == BRCMF_C_SET_VAR) &&
!(strncmp("bsscfg:wsec_key", dcmd.buf, 15))));
if (is_set_key_cmd)
brcmf_netdev_wait_pend8021x(ndev);
err = brcmf_proto_dcmd(drvr, ifp->idx, &dcmd, buflen);
done:
if (err > 0)
err = 0;
return err;
}
static int brcmf_netdev_stop(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
brcmf_dbg(TRACE, "Enter\n");
brcmf_cfg80211_down(drvr->config);
if (drvr->bus_if->drvr_up == 0)
return 0;
/* Set state and stop OS transmissions */
drvr->bus_if->drvr_up = false;
netif_stop_queue(ndev);
return 0;
}
static int brcmf_netdev_open(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
struct brcmf_bus *bus_if = drvr->bus_if;
u32 toe_ol;
s32 ret = 0;
brcmf_dbg(TRACE, "ifidx %d\n", ifp->idx);
if (ifp->idx == 0) { /* do it only for primary eth0 */
/* If bus is not ready, can't continue */
if (bus_if->state != BRCMF_BUS_DATA) {
brcmf_dbg(ERROR, "failed bus is not ready\n");
return -EAGAIN;
}
atomic_set(&drvr->pend_8021x_cnt, 0);
memcpy(ndev->dev_addr, drvr->mac, ETH_ALEN);
/* Get current TOE mode from dongle */
if (brcmf_toe_get(drvr, ifp->idx, &toe_ol) >= 0
&& (toe_ol & TOE_TX_CSUM_OL) != 0)
drvr->iflist[ifp->idx]->ndev->features |=
NETIF_F_IP_CSUM;
else
drvr->iflist[ifp->idx]->ndev->features &=
~NETIF_F_IP_CSUM;
}
/* Allow transmit calls */
netif_start_queue(ndev);
drvr->bus_if->drvr_up = true;
if (brcmf_cfg80211_up(drvr->config)) {
brcmf_dbg(ERROR, "failed to bring up cfg80211\n");
return -1;
}
return ret;
}
static const struct net_device_ops brcmf_netdev_ops_pri = {
.ndo_open = brcmf_netdev_open,
.ndo_stop = brcmf_netdev_stop,
.ndo_get_stats = brcmf_netdev_get_stats,
.ndo_do_ioctl = brcmf_netdev_ioctl_entry,
.ndo_start_xmit = brcmf_netdev_start_xmit,
.ndo_set_mac_address = brcmf_netdev_set_mac_address,
.ndo_set_rx_mode = brcmf_netdev_set_multicast_list
};
int
brcmf_add_if(struct device *dev, int ifidx, char *name, u8 *mac_addr)
{
struct brcmf_if *ifp;
struct net_device *ndev;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
brcmf_dbg(TRACE, "idx %d\n", ifidx);
ifp = drvr->iflist[ifidx];
/*
* Delete the existing interface before overwriting it
* in case we missed the BRCMF_E_IF_DEL event.
*/
if (ifp) {
brcmf_dbg(ERROR, "ERROR: netdev:%s already exists, try free & unregister\n",
ifp->ndev->name);
netif_stop_queue(ifp->ndev);
unregister_netdev(ifp->ndev);
free_netdev(ifp->ndev);
drvr->iflist[ifidx] = NULL;
}
/* Allocate netdev, including space for private structure */
ndev = alloc_netdev(sizeof(struct brcmf_if), name, ether_setup);
if (!ndev) {
brcmf_dbg(ERROR, "OOM - alloc_netdev\n");
return -ENOMEM;
}
ifp = netdev_priv(ndev);
ifp->ndev = ndev;
ifp->drvr = drvr;
drvr->iflist[ifidx] = ifp;
ifp->idx = ifidx;
if (mac_addr != NULL)
memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN);
if (brcmf_net_attach(drvr, ifp->idx)) {
brcmf_dbg(ERROR, "brcmf_net_attach failed");
free_netdev(ifp->ndev);
drvr->iflist[ifidx] = NULL;
return -EOPNOTSUPP;
}
brcmf_dbg(TRACE, " ==== pid:%x, net_device for if:%s created ===\n",
current->pid, ifp->ndev->name);
return 0;
}
void brcmf_del_if(struct brcmf_pub *drvr, int ifidx)
{
struct brcmf_if *ifp;
brcmf_dbg(TRACE, "idx %d\n", ifidx);
ifp = drvr->iflist[ifidx];
if (!ifp) {
brcmf_dbg(ERROR, "Null interface\n");
return;
}
if (ifp->ndev) {
if (ifidx == 0) {
if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) {
rtnl_lock();
brcmf_netdev_stop(ifp->ndev);
rtnl_unlock();
}
} else {
netif_stop_queue(ifp->ndev);
}
unregister_netdev(ifp->ndev);
drvr->iflist[ifidx] = NULL;
if (ifidx == 0)
brcmf_cfg80211_detach(drvr->config);
free_netdev(ifp->ndev);
}
}
int brcmf_attach(uint bus_hdrlen, struct device *dev)
{
struct brcmf_pub *drvr = NULL;
int ret = 0;
brcmf_dbg(TRACE, "Enter\n");
/* Allocate primary brcmf_info */
drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC);
if (!drvr)
return -ENOMEM;
mutex_init(&drvr->proto_block);
/* Link to bus module */
drvr->hdrlen = bus_hdrlen;
drvr->bus_if = dev_get_drvdata(dev);
drvr->bus_if->drvr = drvr;
drvr->dev = dev;
/* Attach and link in the protocol */
ret = brcmf_proto_attach(drvr);
if (ret != 0) {
brcmf_dbg(ERROR, "brcmf_prot_attach failed\n");
goto fail;
}
INIT_WORK(&drvr->setmacaddr_work, _brcmf_set_mac_address);
INIT_WORK(&drvr->multicast_work, _brcmf_set_multicast_list);
return ret;
fail:
brcmf_detach(dev);
return ret;
}
int brcmf_bus_start(struct device *dev)
{
int ret = -1;
/* Room for "event_msgs" + '\0' + bitvec */
char iovbuf[BRCMF_EVENTING_MASK_LEN + 12];
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
brcmf_dbg(TRACE, "\n");
/* Bring up the bus */
ret = bus_if->brcmf_bus_init(dev);
if (ret != 0) {
brcmf_dbg(ERROR, "brcmf_sdbrcm_bus_init failed %d\n", ret);
return ret;
}
brcmf_c_mkiovar("event_msgs", drvr->eventmask, BRCMF_EVENTING_MASK_LEN,
iovbuf, sizeof(iovbuf));
brcmf_proto_cdc_query_dcmd(drvr, 0, BRCMF_C_GET_VAR, iovbuf,
sizeof(iovbuf));
memcpy(drvr->eventmask, iovbuf, BRCMF_EVENTING_MASK_LEN);
setbit(drvr->eventmask, BRCMF_E_SET_SSID);
setbit(drvr->eventmask, BRCMF_E_PRUNE);
setbit(drvr->eventmask, BRCMF_E_AUTH);
setbit(drvr->eventmask, BRCMF_E_REASSOC);
setbit(drvr->eventmask, BRCMF_E_REASSOC_IND);
setbit(drvr->eventmask, BRCMF_E_DEAUTH_IND);
setbit(drvr->eventmask, BRCMF_E_DISASSOC_IND);
setbit(drvr->eventmask, BRCMF_E_DISASSOC);
setbit(drvr->eventmask, BRCMF_E_JOIN);
setbit(drvr->eventmask, BRCMF_E_ASSOC_IND);
setbit(drvr->eventmask, BRCMF_E_PSK_SUP);
setbit(drvr->eventmask, BRCMF_E_LINK);
setbit(drvr->eventmask, BRCMF_E_NDIS_LINK);
setbit(drvr->eventmask, BRCMF_E_MIC_ERROR);
setbit(drvr->eventmask, BRCMF_E_PMKID_CACHE);
setbit(drvr->eventmask, BRCMF_E_TXFAIL);
setbit(drvr->eventmask, BRCMF_E_JOIN_START);
setbit(drvr->eventmask, BRCMF_E_SCAN_COMPLETE);
/* enable dongle roaming event */
drvr->pktfilter_count = 1;
/* Setup filter to allow only unicast */
drvr->pktfilter[0] = "100 0 0 0 0x01 0x00";
/* Bus is ready, do any protocol initialization */
ret = brcmf_proto_init(drvr);
if (ret < 0)
return ret;
/* signal bus ready */
bus_if->state = BRCMF_BUS_DATA;
return 0;
}
int brcmf_net_attach(struct brcmf_pub *drvr, int ifidx)
{
struct net_device *ndev;
u8 temp_addr[ETH_ALEN] = {
0x00, 0x90, 0x4c, 0x11, 0x22, 0x33};
brcmf_dbg(TRACE, "ifidx %d\n", ifidx);
ndev = drvr->iflist[ifidx]->ndev;
ndev->netdev_ops = &brcmf_netdev_ops_pri;
/*
* We have to use the primary MAC for virtual interfaces
*/
if (ifidx != 0) {
/* for virtual interfaces use the primary MAC */
memcpy(temp_addr, drvr->mac, ETH_ALEN);
}
if (ifidx == 1) {
brcmf_dbg(TRACE, "ACCESS POINT MAC:\n");
/* ACCESSPOINT INTERFACE CASE */
temp_addr[0] |= 0X02; /* set bit 2 ,
- Locally Administered address */
}
ndev->hard_header_len = ETH_HLEN + drvr->hdrlen;
ndev->ethtool_ops = &brcmf_ethtool_ops;
drvr->rxsz = ndev->mtu + ndev->hard_header_len +
drvr->hdrlen;
memcpy(ndev->dev_addr, temp_addr, ETH_ALEN);
/* attach to cfg80211 for primary interface */
if (!ifidx) {
drvr->config = brcmf_cfg80211_attach(ndev, drvr->dev, drvr);
if (drvr->config == NULL) {
brcmf_dbg(ERROR, "wl_cfg80211_attach failed\n");
goto fail;
}
}
if (register_netdev(ndev) != 0) {
brcmf_dbg(ERROR, "couldn't register the net device\n");
goto fail;
}
brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name);
return 0;
fail:
ndev->netdev_ops = NULL;
return -EBADE;
}
static void brcmf_bus_detach(struct brcmf_pub *drvr)
{
brcmf_dbg(TRACE, "Enter\n");
if (drvr) {
/* Stop the protocol module */
brcmf_proto_stop(drvr);
/* Stop the bus module */
drvr->bus_if->brcmf_bus_stop(drvr->dev);
}
}
void brcmf_detach(struct device *dev)
{
int i;
struct brcmf_bus *bus_if = dev_get_drvdata(dev);
struct brcmf_pub *drvr = bus_if->drvr;
brcmf_dbg(TRACE, "Enter\n");
/* make sure primary interface removed last */
for (i = BRCMF_MAX_IFS-1; i > -1; i--)
if (drvr->iflist[i])
brcmf_del_if(drvr, i);
brcmf_bus_detach(drvr);
if (drvr->prot) {
cancel_work_sync(&drvr->setmacaddr_work);
cancel_work_sync(&drvr->multicast_work);
brcmf_proto_detach(drvr);
}
bus_if->drvr = NULL;
kfree(drvr);
}
static int brcmf_get_pend_8021x_cnt(struct brcmf_pub *drvr)
{
return atomic_read(&drvr->pend_8021x_cnt);
}
#define MAX_WAIT_FOR_8021X_TX 10
int brcmf_netdev_wait_pend8021x(struct net_device *ndev)
{
struct brcmf_if *ifp = netdev_priv(ndev);
struct brcmf_pub *drvr = ifp->drvr;
int timeout = 10 * HZ / 1000;
int ntimes = MAX_WAIT_FOR_8021X_TX;
int pend = brcmf_get_pend_8021x_cnt(drvr);
while (ntimes && pend) {
if (pend) {
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(timeout);
set_current_state(TASK_RUNNING);
ntimes--;
}
pend = brcmf_get_pend_8021x_cnt(drvr);
}
return pend;
}
#ifdef DEBUG
int brcmf_write_to_file(struct brcmf_pub *drvr, const u8 *buf, int size)
{
int ret = 0;
struct file *fp;
mm_segment_t old_fs;
loff_t pos = 0;
/* change to KERNEL_DS address limit */
old_fs = get_fs();
set_fs(KERNEL_DS);
/* open file to write */
fp = filp_open("/tmp/mem_dump", O_WRONLY | O_CREAT, 0640);
if (!fp) {
brcmf_dbg(ERROR, "open file error\n");
ret = -1;
goto exit;
}
/* Write buf to file */
fp->f_op->write(fp, (char __user *)buf, size, &pos);
exit:
/* free buf before return */
kfree(buf);
/* close file before return */
if (fp)
filp_close(fp, current->files);
/* restore previous address limit */
set_fs(old_fs);
return ret;
}
#endif /* DEBUG */
static void brcmf_driver_init(struct work_struct *work)
{
#ifdef CONFIG_BRCMFMAC_SDIO
brcmf_sdio_init();
#endif
#ifdef CONFIG_BRCMFMAC_USB
brcmf_usb_init();
#endif
}
static DECLARE_WORK(brcmf_driver_work, brcmf_driver_init);
static int __init brcmfmac_module_init(void)
{
if (!schedule_work(&brcmf_driver_work))
return -EBUSY;
return 0;
}
static void __exit brcmfmac_module_exit(void)
{
cancel_work_sync(&brcmf_driver_work);
#ifdef CONFIG_BRCMFMAC_SDIO
brcmf_sdio_exit();
#endif
#ifdef CONFIG_BRCMFMAC_USB
brcmf_usb_exit();
#endif
}
module_init(brcmfmac_module_init);
module_exit(brcmfmac_module_exit);