diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c | 1354 |
1 files changed, 1354 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 00000000000..99ba5e3e45f --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c @@ -0,0 +1,1354 @@ +/* + * 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. + */ + +#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 <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" +#include "bcmchip.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_info *info; /* back pointer to brcmf_info */ + /* OS/stack specifics */ + struct net_device *ndev; + struct net_device_stats stats; + int idx; /* iface idx in dongle */ + int state; /* interface state */ + u8 mac_addr[ETH_ALEN]; /* assigned MAC address */ +}; + +/* Local private structure (extension of pub) */ +struct brcmf_info { + struct brcmf_pub pub; + + /* OS/stack specifics */ + struct brcmf_if *iflist[BRCMF_MAX_IFS]; + + struct mutex proto_block; + + struct work_struct setmacaddr_work; + struct work_struct multicast_work; + u8 macvalue[ETH_ALEN]; + atomic_t pend_8021x_cnt; +}; + +/* Error bits */ +module_param(brcmf_msg_level, int, 0); + + +static int brcmf_net2idx(struct brcmf_info *drvr_priv, struct net_device *ndev) +{ + int i = 0; + + while (i < BRCMF_MAX_IFS) { + if (drvr_priv->iflist[i] && drvr_priv->iflist[i]->ndev == ndev) + return i; + i++; + } + + return BRCMF_BAD_IF; +} + +int brcmf_ifname2idx(struct brcmf_info *drvr_priv, char *name) +{ + int i = BRCMF_MAX_IFS; + struct brcmf_if *ifp; + + if (name == NULL || *name == '\0') + return 0; + + while (--i > 0) { + ifp = drvr_priv->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) +{ + struct brcmf_info *drvr_priv = drvr->info; + + if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) { + brcmf_dbg(ERROR, "ifidx %d out of range\n", ifidx); + return "<if_bad>"; + } + + if (drvr_priv->iflist[ifidx] == NULL) { + brcmf_dbg(ERROR, "null i/f %d\n", ifidx); + return "<if_null>"; + } + + if (drvr_priv->iflist[ifidx]->ndev) + return drvr_priv->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 allmulti, cnt; + __le32 cnt_le; + __le32 allmulti_le; + + struct brcmf_dcmd dcmd; + char *buf, *bufp; + uint buflen; + int ret; + + struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info, + multicast_work); + + ndev = drvr_priv->iflist[0]->ndev; + cnt = netdev_mc_count(ndev); + + /* Determine initial value of allmulti flag */ + allmulti = (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_priv->pub, 0, &dcmd, dcmd.len); + if (ret < 0) { + brcmf_dbg(ERROR, "%s: set mcast_list failed, cnt %d\n", + brcmf_ifname(&drvr_priv->pub, 0), cnt); + allmulti = cnt ? true : allmulti; + } + + 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(allmulti); + buf = kmalloc(buflen, GFP_ATOMIC); + if (!buf) + return; + + allmulti_le = cpu_to_le32(allmulti); + + if (!brcmu_mkiovar + ("allmulti", (void *)&allmulti_le, + sizeof(allmulti_le), buf, buflen)) { + brcmf_dbg(ERROR, "%s: mkiovar failed for allmulti, datalen %d buflen %u\n", + brcmf_ifname(&drvr_priv->pub, 0), + (int)sizeof(allmulti), 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_priv->pub, 0, &dcmd, dcmd.len); + if (ret < 0) { + brcmf_dbg(ERROR, "%s: set allmulti %d failed\n", + brcmf_ifname(&drvr_priv->pub, 0), + le32_to_cpu(allmulti_le)); + } + + kfree(buf); + + /* Finally, pick up the PROMISC flag as well, like the NIC + driver does */ + + allmulti = (ndev->flags & IFF_PROMISC) ? true : false; + allmulti_le = cpu_to_le32(allmulti); + + memset(&dcmd, 0, sizeof(dcmd)); + dcmd.cmd = BRCMF_C_SET_PROMISC; + dcmd.buf = &allmulti_le; + dcmd.len = sizeof(allmulti_le); + dcmd.set = true; + + ret = brcmf_proto_dcmd(&drvr_priv->pub, 0, &dcmd, dcmd.len); + if (ret < 0) { + brcmf_dbg(ERROR, "%s: set promisc %d failed\n", + brcmf_ifname(&drvr_priv->pub, 0), + le32_to_cpu(allmulti_le)); + } +} + +static void +_brcmf_set_mac_address(struct work_struct *work) +{ + char buf[32]; + struct brcmf_dcmd dcmd; + int ret; + + struct brcmf_info *drvr_priv = container_of(work, struct brcmf_info, + setmacaddr_work); + + brcmf_dbg(TRACE, "enter\n"); + if (!brcmu_mkiovar("cur_etheraddr", (char *)drvr_priv->macvalue, + ETH_ALEN, buf, 32)) { + brcmf_dbg(ERROR, "%s: mkiovar failed for cur_etheraddr\n", + brcmf_ifname(&drvr_priv->pub, 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_priv->pub, 0, &dcmd, dcmd.len); + if (ret < 0) + brcmf_dbg(ERROR, "%s: set cur_etheraddr failed\n", + brcmf_ifname(&drvr_priv->pub, 0)); + else + memcpy(drvr_priv->iflist[0]->ndev->dev_addr, + drvr_priv->macvalue, ETH_ALEN); + + return; +} + +static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr) +{ + struct brcmf_info *drvr_priv = *(struct brcmf_info **) + netdev_priv(ndev); + struct sockaddr *sa = (struct sockaddr *)addr; + int ifidx; + + ifidx = brcmf_net2idx(drvr_priv, ndev); + if (ifidx == BRCMF_BAD_IF) + return -1; + + memcpy(&drvr_priv->macvalue, sa->sa_data, ETH_ALEN); + schedule_work(&drvr_priv->setmacaddr_work); + return 0; +} + +static void brcmf_netdev_set_multicast_list(struct net_device *ndev) +{ + struct brcmf_info *drvr_priv = *(struct brcmf_info **) + netdev_priv(ndev); + int ifidx; + + ifidx = brcmf_net2idx(drvr_priv, ndev); + if (ifidx == BRCMF_BAD_IF) + return; + + schedule_work(&drvr_priv->multicast_work); +} + +int brcmf_sendpkt(struct brcmf_pub *drvr, int ifidx, struct sk_buff *pktbuf) +{ + struct brcmf_info *drvr_priv = drvr->info; + + /* Reject if down */ + if (!drvr->up || (drvr->busstate == 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_priv->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 brcmf_sdbrcm_bus_txdata(drvr->bus, pktbuf); +} + +static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *ndev) +{ + int ret; + struct brcmf_info *drvr_priv = *(struct brcmf_info **) + netdev_priv(ndev); + int ifidx; + + brcmf_dbg(TRACE, "Enter\n"); + + /* Reject if down */ + if (!drvr_priv->pub.up || (drvr_priv->pub.busstate == BRCMF_BUS_DOWN)) { + brcmf_dbg(ERROR, "xmit rejected pub.up=%d busstate=%d\n", + drvr_priv->pub.up, drvr_priv->pub.busstate); + netif_stop_queue(ndev); + return -ENODEV; + } + + ifidx = brcmf_net2idx(drvr_priv, ndev); + if (ifidx == BRCMF_BAD_IF) { + brcmf_dbg(ERROR, "bad ifidx %d\n", ifidx); + netif_stop_queue(ndev); + return -ENODEV; + } + + /* Make sure there's enough room for any header */ + if (skb_headroom(skb) < drvr_priv->pub.hdrlen) { + struct sk_buff *skb2; + + brcmf_dbg(INFO, "%s: insufficient headroom\n", + brcmf_ifname(&drvr_priv->pub, ifidx)); + drvr_priv->pub.tx_realloc++; + skb2 = skb_realloc_headroom(skb, drvr_priv->pub.hdrlen); + dev_kfree_skb(skb); + skb = skb2; + if (skb == NULL) { + brcmf_dbg(ERROR, "%s: skb_realloc_headroom failed\n", + brcmf_ifname(&drvr_priv->pub, ifidx)); + ret = -ENOMEM; + goto done; + } + } + + ret = brcmf_sendpkt(&drvr_priv->pub, ifidx, skb); + +done: + if (ret) + drvr_priv->pub.dstats.tx_dropped++; + else + drvr_priv->pub.tx_packets++; + + /* Return ok: we always eat the packet */ + return 0; +} + +void brcmf_txflowcontrol(struct brcmf_pub *drvr, int ifidx, bool state) +{ + struct net_device *ndev; + struct brcmf_info *drvr_priv = drvr->info; + + brcmf_dbg(TRACE, "Enter\n"); + + drvr->txoff = state; + ndev = drvr_priv->iflist[ifidx]->ndev; + if (state == ON) + netif_stop_queue(ndev); + else + netif_wake_queue(ndev); +} + +static int brcmf_host_event(struct brcmf_info *drvr_priv, int *ifidx, + void *pktdata, struct brcmf_event_msg *event, + void **data) +{ + int bcmerror = 0; + + bcmerror = brcmf_c_host_event(drvr_priv, ifidx, pktdata, event, data); + if (bcmerror != 0) + return bcmerror; + + if (drvr_priv->iflist[*ifidx]->ndev) + brcmf_cfg80211_event(drvr_priv->iflist[*ifidx]->ndev, + event, *data); + + return bcmerror; +} + +void brcmf_rx_frame(struct brcmf_pub *drvr, int ifidx, struct sk_buff *skb, + int numpkt) +{ + struct brcmf_info *drvr_priv = drvr->info; + unsigned char *eth; + uint len; + void *data; + struct sk_buff *pnext, *save_pktbuf; + int i; + struct brcmf_if *ifp; + struct brcmf_event_msg event; + + brcmf_dbg(TRACE, "Enter\n"); + + save_pktbuf = skb; + + for (i = 0; skb && i < numpkt; i++, skb = pnext) { + + pnext = skb->next; + skb->next = NULL; + + /* 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_priv->iflist[ifidx]; + if (ifp == NULL) + ifp = drvr_priv->iflist[0]; + + skb->dev = ifp->ndev; + skb->protocol = eth_type_trans(skb, skb->dev); + + if (skb->pkt_type == PACKET_MULTICAST) + drvr_priv->pub.rx_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_priv, &ifidx, + skb_mac_header(skb), + &event, &data); + + if (drvr_priv->iflist[ifidx] && + !drvr_priv->iflist[ifidx]->state) + ifp = drvr_priv->iflist[ifidx]; + + if (ifp->ndev) + ifp->ndev->last_rx = jiffies; + + drvr->dstats.rx_bytes += skb->len; + drvr->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 brcmf_pub *drvr, struct sk_buff *txp, bool success) +{ + uint ifidx; + struct brcmf_info *drvr_priv = drvr->info; + struct ethhdr *eh; + u16 type; + + brcmf_proto_hdrpull(drvr, &ifidx, txp); + + eh = (struct ethhdr *)(txp->data); + type = ntohs(eh->h_proto); + + if (type == ETH_P_PAE) + atomic_dec(&drvr_priv->pend_8021x_cnt); + +} + +static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev) +{ + struct brcmf_info *drvr_priv = *(struct brcmf_info **) + netdev_priv(ndev); + struct brcmf_if *ifp; + int ifidx; + + brcmf_dbg(TRACE, "Enter\n"); + + ifidx = brcmf_net2idx(drvr_priv, ndev); + if (ifidx == BRCMF_BAD_IF) + return NULL; + + ifp = drvr_priv->iflist[ifidx]; + + if (drvr_priv->pub.up) + /* Use the protocol to get dongle stats */ + brcmf_proto_dstats(&drvr_priv->pub); + + /* Copy dongle stats to net device stats */ + ifp->stats.rx_packets = drvr_priv->pub.dstats.rx_packets; + ifp->stats.tx_packets = drvr_priv->pub.dstats.tx_packets; + ifp->stats.rx_bytes = drvr_priv->pub.dstats.rx_bytes; + ifp->stats.tx_bytes = drvr_priv->pub.dstats.tx_bytes; + ifp->stats.rx_errors = drvr_priv->pub.dstats.rx_errors; + ifp->stats.tx_errors = drvr_priv->pub.dstats.tx_errors; + ifp->stats.rx_dropped = drvr_priv->pub.dstats.rx_dropped; + ifp->stats.tx_dropped = drvr_priv->pub.dstats.tx_dropped; + ifp->stats.multicast = drvr_priv->pub.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_info *drvr_priv, int ifidx, u32 *toe_ol) +{ + struct brcmf_dcmd dcmd; + 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_priv->pub, 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_priv->pub, ifidx)); + return -EOPNOTSUPP; + } + + brcmf_dbg(INFO, "%s: could not get toe_ol: ret=%d\n", + brcmf_ifname(&drvr_priv->pub, ifidx), ret); + return ret; + } + + memcpy(toe_ol, buf, sizeof(u32)); + return 0; +} + +/* Set current toe component enables in toe_ol iovar, + and set toe global enable iovar */ +static int brcmf_toe_set(struct brcmf_info *drvr_priv, int ifidx, u32 toe_ol) +{ + struct brcmf_dcmd dcmd; + char buf[32]; + int toe, ret; + + 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_ol, sizeof(u32)); + + ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len); + if (ret < 0) { + brcmf_dbg(ERROR, "%s: could not set toe_ol: ret=%d\n", + brcmf_ifname(&drvr_priv->pub, ifidx), ret); + return ret; + } + + /* Enable toe globally only if any components are enabled. */ + + toe = (toe_ol != 0); + + strcpy(buf, "toe"); + memcpy(&buf[sizeof("toe")], &toe, sizeof(u32)); + + ret = brcmf_proto_dcmd(&drvr_priv->pub, ifidx, &dcmd, dcmd.len); + if (ret < 0) { + brcmf_dbg(ERROR, "%s: could not set toe: ret=%d\n", + brcmf_ifname(&drvr_priv->pub, ifidx), ret); + return ret; + } + + return 0; +} + +static void brcmf_ethtool_get_drvinfo(struct net_device *ndev, + struct ethtool_drvinfo *info) +{ + struct brcmf_info *drvr_priv = *(struct brcmf_info **) + netdev_priv(ndev); + + sprintf(info->driver, KBUILD_MODNAME); + sprintf(info->version, "%lu", drvr_priv->pub.drv_version); + sprintf(info->fw_version, "%s", BCM4329_FW_NAME); + sprintf(info->bus_info, "%s", + dev_name(brcmf_bus_get_device(drvr_priv->pub.bus))); +} + +static struct ethtool_ops brcmf_ethtool_ops = { + .get_drvinfo = brcmf_ethtool_get_drvinfo +}; + +static int brcmf_ethtool(struct brcmf_info *drvr_priv, 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_priv->pub.up) { + brcmf_dbg(ERROR, "dongle is not up\n"); + return -ENODEV; + } + + /* finally, report dongle driver type */ + else if (drvr_priv->pub.iswl) + sprintf(info.driver, "wl"); + else + sprintf(info.driver, "xx"); + + sprintf(info.version, "%lu", drvr_priv->pub.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_priv, 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_priv, 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_priv, 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_priv->iflist[0]->ndev->features |= + NETIF_F_IP_CSUM; + else + drvr_priv->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_info *drvr_priv = *(struct brcmf_info **) + netdev_priv(ndev); + int ifidx; + + ifidx = brcmf_net2idx(drvr_priv, ndev); + brcmf_dbg(TRACE, "ifidx %d, cmd 0x%04x\n", ifidx, cmd); + + if (ifidx == BRCMF_BAD_IF) + return -1; + + if (cmd == SIOCETHTOOL) + return brcmf_ethtool(drvr_priv, 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_info *drvr_priv = *(struct brcmf_info **) + netdev_priv(ndev); + int ifidx; + + memset(&dcmd, 0, sizeof(dcmd)); + dcmd.cmd = cmd; + dcmd.buf = arg; + dcmd.len = len; + + ifidx = brcmf_net2idx(drvr_priv, ndev); + + if (dcmd.buf != NULL) + buflen = min_t(uint, dcmd.len, BRCMF_DCMD_MAXLEN); + + /* send to dongle (must be up, and wl) */ + if ((drvr_priv->pub.busstate != BRCMF_BUS_DATA)) { + brcmf_dbg(ERROR, "DONGLE_DOWN\n"); + err = -EIO; + goto done; + } + + if (!drvr_priv->pub.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_priv->pub, ifidx, &dcmd, buflen); + +done: + if (err > 0) + err = 0; + + return err; +} + +static int brcmf_netdev_stop(struct net_device *ndev) +{ + struct brcmf_pub *drvr = *(struct brcmf_pub **) netdev_priv(ndev); + + brcmf_dbg(TRACE, "Enter\n"); + brcmf_cfg80211_down(drvr->config); + if (drvr->up == 0) + return 0; + + /* Set state and stop OS transmissions */ + drvr->up = 0; + netif_stop_queue(ndev); + + return 0; +} + +static int brcmf_netdev_open(struct net_device *ndev) +{ + struct brcmf_info *drvr_priv = *(struct brcmf_info **) + netdev_priv(ndev); + u32 toe_ol; + int ifidx = brcmf_net2idx(drvr_priv, ndev); + s32 ret = 0; + + brcmf_dbg(TRACE, "ifidx %d\n", ifidx); + + if (ifidx == 0) { /* do it only for primary eth0 */ + + /* try to bring up bus */ + ret = brcmf_bus_start(&drvr_priv->pub); + if (ret != 0) { + brcmf_dbg(ERROR, "failed with code %d\n", ret); + return -1; + } + atomic_set(&drvr_priv->pend_8021x_cnt, 0); + + memcpy(ndev->dev_addr, drvr_priv->pub.mac, ETH_ALEN); + + /* Get current TOE mode from dongle */ + if (brcmf_toe_get(drvr_priv, ifidx, &toe_ol) >= 0 + && (toe_ol & TOE_TX_CSUM_OL) != 0) + drvr_priv->iflist[ifidx]->ndev->features |= + NETIF_F_IP_CSUM; + else + drvr_priv->iflist[ifidx]->ndev->features &= + ~NETIF_F_IP_CSUM; + } + /* Allow transmit calls */ + netif_start_queue(ndev); + drvr_priv->pub.up = 1; + if (brcmf_cfg80211_up(drvr_priv->pub.config)) { + brcmf_dbg(ERROR, "failed to bring up cfg80211\n"); + return -1; + } + + return ret; +} + +int +brcmf_add_if(struct brcmf_info *drvr_priv, int ifidx, struct net_device *ndev, + char *name, u8 *mac_addr, u32 flags, u8 bssidx) +{ + struct brcmf_if *ifp; + int ret = 0, err = 0; + + brcmf_dbg(TRACE, "idx %d, handle->%p\n", ifidx, ndev); + + ifp = drvr_priv->iflist[ifidx]; + if (!ifp) { + ifp = kmalloc(sizeof(struct brcmf_if), GFP_ATOMIC); + if (!ifp) + return -ENOMEM; + } + + memset(ifp, 0, sizeof(struct brcmf_if)); + ifp->info = drvr_priv; + drvr_priv->iflist[ifidx] = ifp; + if (mac_addr != NULL) + memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN); + + if (ndev == NULL) { + ifp->state = BRCMF_E_IF_ADD; + ifp->idx = ifidx; + /* + * Delete the existing interface before overwriting it + * in case we missed the BRCMF_E_IF_DEL event. + */ + if (ifp->ndev != NULL) { + 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); + } + + /* Allocate netdev, including space for private structure */ + ifp->ndev = alloc_netdev(sizeof(drvr_priv), "wlan%d", + ether_setup); + if (!ifp->ndev) { + brcmf_dbg(ERROR, "OOM - alloc_netdev\n"); + ret = -ENOMEM; + } + + if (ret == 0) { + memcpy(netdev_priv(ifp->ndev), &drvr_priv, + sizeof(drvr_priv)); + err = brcmf_net_attach(&drvr_priv->pub, ifp->idx); + if (err != 0) { + brcmf_dbg(ERROR, "brcmf_net_attach failed, err %d\n", + err); + ret = -EOPNOTSUPP; + } else { + brcmf_dbg(TRACE, " ==== pid:%x, net_device for if:%s created ===\n", + current->pid, ifp->ndev->name); + ifp->state = 0; + } + } + + if (ret < 0) { + if (ifp->ndev) + free_netdev(ifp->ndev); + + drvr_priv->iflist[ifp->idx] = NULL; + kfree(ifp); + } + } else + ifp->ndev = ndev; + + return 0; +} + +void brcmf_del_if(struct brcmf_info *drvr_priv, int ifidx) +{ + struct brcmf_if *ifp; + + brcmf_dbg(TRACE, "idx %d\n", ifidx); + + ifp = drvr_priv->iflist[ifidx]; + if (!ifp) { + brcmf_dbg(ERROR, "Null interface\n"); + return; + } + + ifp->state = BRCMF_E_IF_DEL; + ifp->idx = ifidx; + if (ifp->ndev != NULL) { + netif_stop_queue(ifp->ndev); + unregister_netdev(ifp->ndev); + free_netdev(ifp->ndev); + drvr_priv->iflist[ifidx] = NULL; + kfree(ifp); + } +} + +struct brcmf_pub *brcmf_attach(struct brcmf_bus *bus, uint bus_hdrlen) +{ + struct brcmf_info *drvr_priv = NULL; + struct net_device *ndev; + + brcmf_dbg(TRACE, "Enter\n"); + + /* Allocate netdev, including space for private structure */ + ndev = alloc_netdev(sizeof(drvr_priv), "wlan%d", ether_setup); + if (!ndev) { + brcmf_dbg(ERROR, "OOM - alloc_netdev\n"); + goto fail; + } + + /* Allocate primary brcmf_info */ + drvr_priv = kzalloc(sizeof(struct brcmf_info), GFP_ATOMIC); + if (!drvr_priv) + goto fail; + + /* + * Save the brcmf_info into the priv + */ + memcpy(netdev_priv(ndev), &drvr_priv, sizeof(drvr_priv)); + + if (brcmf_add_if(drvr_priv, 0, ndev, ndev->name, NULL, 0, 0) == + BRCMF_BAD_IF) + goto fail; + + ndev->netdev_ops = NULL; + mutex_init(&drvr_priv->proto_block); + + /* Link to info module */ + drvr_priv->pub.info = drvr_priv; + + /* Link to bus module */ + drvr_priv->pub.bus = bus; + drvr_priv->pub.hdrlen = bus_hdrlen; + + /* Attach and link in the protocol */ + if (brcmf_proto_attach(&drvr_priv->pub) != 0) { + brcmf_dbg(ERROR, "brcmf_prot_attach failed\n"); + goto fail; + } + + /* Attach and link in the cfg80211 */ + drvr_priv->pub.config = + brcmf_cfg80211_attach(ndev, + brcmf_bus_get_device(bus), + &drvr_priv->pub); + if (drvr_priv->pub.config == NULL) { + brcmf_dbg(ERROR, "wl_cfg80211_attach failed\n"); + goto fail; + } + + INIT_WORK(&drvr_priv->setmacaddr_work, _brcmf_set_mac_address); + INIT_WORK(&drvr_priv->multicast_work, _brcmf_set_multicast_list); + + /* + * Save the brcmf_info into the priv + */ + memcpy(netdev_priv(ndev), &drvr_priv, sizeof(drvr_priv)); + + return &drvr_priv->pub; + +fail: + if (ndev) + free_netdev(ndev); + if (drvr_priv) + brcmf_detach(&drvr_priv->pub); + + return NULL; +} + +int brcmf_bus_start(struct brcmf_pub *drvr) +{ + int ret = -1; + struct brcmf_info *drvr_priv = drvr->info; + /* Room for "event_msgs" + '\0' + bitvec */ + char iovbuf[BRCMF_EVENTING_MASK_LEN + 12]; + + brcmf_dbg(TRACE, "\n"); + + /* Bring up the bus */ + ret = brcmf_sdbrcm_bus_init(&drvr_priv->pub); + if (ret != 0) { + brcmf_dbg(ERROR, "brcmf_sdbrcm_bus_init failed %d\n", ret); + return ret; + } + + /* If bus is not ready, can't come up */ + if (drvr_priv->pub.busstate != BRCMF_BUS_DATA) { + brcmf_dbg(ERROR, "failed bus is not ready\n"); + return -ENODEV; + } + + brcmu_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_priv->pub); + if (ret < 0) + return ret; + + return 0; +} + +static 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_multicast_list = brcmf_netdev_set_multicast_list +}; + +int brcmf_net_attach(struct brcmf_pub *drvr, int ifidx) +{ + struct brcmf_info *drvr_priv = drvr->info; + struct net_device *ndev; + u8 temp_addr[ETH_ALEN] = { + 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33}; + + brcmf_dbg(TRACE, "ifidx %d\n", ifidx); + + ndev = drvr_priv->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_priv->pub.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_priv->pub.hdrlen; + ndev->ethtool_ops = &brcmf_ethtool_ops; + + drvr_priv->pub.rxsz = ndev->mtu + ndev->hard_header_len + + drvr_priv->pub.hdrlen; + + memcpy(ndev->dev_addr, temp_addr, ETH_ALEN); + + 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) +{ + struct brcmf_info *drvr_priv; + + brcmf_dbg(TRACE, "Enter\n"); + + if (drvr) { + drvr_priv = drvr->info; + if (drvr_priv) { + /* Stop the protocol module */ + brcmf_proto_stop(&drvr_priv->pub); + + /* Stop the bus module */ + brcmf_sdbrcm_bus_stop(drvr_priv->pub.bus); + } + } +} + +void brcmf_detach(struct brcmf_pub *drvr) +{ + struct brcmf_info *drvr_priv; + + brcmf_dbg(TRACE, "Enter\n"); + + if (drvr) { + drvr_priv = drvr->info; + if (drvr_priv) { + struct brcmf_if *ifp; + int i; + + for (i = 1; i < BRCMF_MAX_IFS; i++) + if (drvr_priv->iflist[i]) + brcmf_del_if(drvr_priv, i); + + ifp = drvr_priv->iflist[0]; + if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { + rtnl_lock(); + brcmf_netdev_stop(ifp->ndev); + rtnl_unlock(); + unregister_netdev(ifp->ndev); + } + + cancel_work_sync(&drvr_priv->setmacaddr_work); + cancel_work_sync(&drvr_priv->multicast_work); + + brcmf_bus_detach(drvr); + + if (drvr->prot) + brcmf_proto_detach(drvr); + + brcmf_cfg80211_detach(drvr->config); + + free_netdev(ifp->ndev); + kfree(ifp); + kfree(drvr_priv); + } + } +} + +static void __exit brcmf_module_cleanup(void) +{ + brcmf_dbg(TRACE, "Enter\n"); + + brcmf_bus_unregister(); +} + +static int __init brcmf_module_init(void) +{ + int error; + + brcmf_dbg(TRACE, "Enter\n"); + + error = brcmf_bus_register(); + + if (error) { + brcmf_dbg(ERROR, "brcmf_bus_register failed\n"); + goto failed; + } + return 0; + +failed: + return -EINVAL; +} + +module_init(brcmf_module_init); +module_exit(brcmf_module_cleanup); + +int brcmf_os_proto_block(struct brcmf_pub *drvr) +{ + struct brcmf_info *drvr_priv = drvr->info; + + if (drvr_priv) { + mutex_lock(&drvr_priv->proto_block); + return 1; + } + return 0; +} + +int brcmf_os_proto_unblock(struct brcmf_pub *drvr) +{ + struct brcmf_info *drvr_priv = drvr->info; + + if (drvr_priv) { + mutex_unlock(&drvr_priv->proto_block); + return 1; + } + + return 0; +} + +static int brcmf_get_pend_8021x_cnt(struct brcmf_info *drvr_priv) +{ + return atomic_read(&drvr_priv->pend_8021x_cnt); +} + +#define MAX_WAIT_FOR_8021X_TX 10 + +int brcmf_netdev_wait_pend8021x(struct net_device *ndev) +{ + struct brcmf_info *drvr_priv = *(struct brcmf_info **)netdev_priv(ndev); + int timeout = 10 * HZ / 1000; + int ntimes = MAX_WAIT_FOR_8021X_TX; + int pend = brcmf_get_pend_8021x_cnt(drvr_priv); + + 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_priv); + } + return pend; +} + +#ifdef BCMDBG +int brcmf_write_to_file(struct brcmf_pub *drvr, 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, 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 /* BCMDBG */ |