diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c | 1216 |
1 files changed, 1216 insertions, 0 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c new file mode 100644 index 00000000..2a1e5ae0 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c @@ -0,0 +1,1216 @@ +/* + * 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); |