/* * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(CONFIG_HAS_EARLYSUSPEND) #include #endif #include #include #include #include "dngl_stats.h" #include "dhd.h" #include "dhd_bus.h" #include "dhd_proto.h" #include "dhd_dbg.h" #include "wl_cfg80211.h" #define EPI_VERSION_STR "4.218.248.5" #define ETH_P_BRCM 0x886c /* Global ASSERT type flag */ u32 g_assert_type; #if defined(CONFIG_PM_SLEEP) #include atomic_t brcmf_mmc_suspend; DECLARE_WAIT_QUEUE_HEAD(dhd_dpc_wait); #endif /* defined(CONFIG_PM_SLEEP) */ 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 */ typedef struct dhd_if { struct dhd_info *info; /* back pointer to dhd_info */ /* OS/stack specifics */ struct net_device *net; struct net_device_stats stats; int idx; /* iface idx in dongle */ int state; /* interface state */ uint subunit; /* subunit */ u8 mac_addr[ETH_ALEN]; /* assigned MAC address */ bool attached; /* Delayed attachment when unset */ bool txflowcontrol; /* Per interface flow control indicator */ char name[IFNAMSIZ]; /* linux interface name */ } dhd_if_t; /* Local private structure (extension of pub) */ typedef struct dhd_info { dhd_pub_t pub; /* OS/stack specifics */ dhd_if_t *iflist[DHD_MAX_IFS]; struct semaphore proto_sem; wait_queue_head_t ioctl_resp_wait; struct timer_list timer; bool wd_timer_valid; struct tasklet_struct tasklet; spinlock_t sdlock; /* Thread based operation */ bool threads_only; struct semaphore sdsem; struct task_struct *watchdog_tsk; struct semaphore watchdog_sem; struct task_struct *dpc_tsk; struct semaphore dpc_sem; /* Thread to issue ioctl for multicast */ struct task_struct *sysioc_tsk; struct semaphore sysioc_sem; bool set_multicast; bool set_macaddress; u8 macvalue[ETH_ALEN]; wait_queue_head_t ctrl_wait; atomic_t pend_8021x_cnt; #ifdef CONFIG_HAS_EARLYSUSPEND struct early_suspend early_suspend; #endif /* CONFIG_HAS_EARLYSUSPEND */ } dhd_info_t; /* Definitions to provide path to the firmware and nvram * example nvram_path[MOD_PARAM_PATHLEN]="/projects/wlan/nvram.txt" */ char firmware_path[MOD_PARAM_PATHLEN]; char nvram_path[MOD_PARAM_PATHLEN]; /* load firmware and/or nvram values from the filesystem */ module_param_string(firmware_path, firmware_path, MOD_PARAM_PATHLEN, 0); module_param_string(nvram_path, nvram_path, MOD_PARAM_PATHLEN, 0); /* No firmware required */ bool brcmf_no_fw_req; module_param(brcmf_no_fw_req, bool, 0); /* Error bits */ module_param(brcmf_msg_level, int, 0); /* Spawn a thread for system ioctls (set mac, set mcast) */ uint brcmf_sysioc = true; module_param(brcmf_sysioc, uint, 0); /* Watchdog interval */ uint brcmf_watchdog_ms = 10; module_param(brcmf_watchdog_ms, uint, 0); #ifdef BCMDBG /* Console poll interval */ uint brcmf_console_ms; module_param(brcmf_console_ms, uint, 0); #endif /* BCMDBG */ /* ARP offload agent mode : Enable ARP Host Auto-Reply and ARP Peer Auto-Reply */ uint brcmf_arp_mode = 0xb; module_param(brcmf_arp_mode, uint, 0); /* ARP offload enable */ uint brcmf_arp_enable = true; module_param(brcmf_arp_enable, uint, 0); /* Global Pkt filter enable control */ uint brcmf_pkt_filter_enable = true; module_param(brcmf_pkt_filter_enable, uint, 0); /* Pkt filter init setup */ uint brcmf_pkt_filter_init; module_param(brcmf_pkt_filter_init, uint, 0); /* Pkt filter mode control */ uint brcmf_master_mode = true; module_param(brcmf_master_mode, uint, 1); /* Watchdog thread priority, -1 to use kernel timer */ int brcmf_watchdog_prio = 97; module_param(brcmf_watchdog_prio, int, 0); /* DPC thread priority, -1 to use tasklet */ int brcmf_dpc_prio = 98; module_param(brcmf_dpc_prio, int, 0); /* DPC thread priority, -1 to use tasklet */ extern int brcmf_dongle_memsize; module_param(brcmf_dongle_memsize, int, 0); /* Contorl fw roaming */ uint brcmf_roam = 1; /* Control radio state */ uint brcmf_radio_up = 1; /* Network inteface name */ char iface_name[IFNAMSIZ] = "wlan"; module_param_string(iface_name, iface_name, IFNAMSIZ, 0); /* The following are specific to the SDIO dongle */ /* IOCTL response timeout */ int brcmf_ioctl_timeout_msec = IOCTL_RESP_TIMEOUT; /* Idle timeout for backplane clock */ int brcmf_idletime = BRCMF_IDLETIME_TICKS; module_param(brcmf_idletime, int, 0); /* Use polling */ uint brcmf_poll; module_param(brcmf_poll, uint, 0); /* Use interrupts */ uint brcmf_intr = true; module_param(brcmf_intr, uint, 0); /* SDIO Drive Strength (in milliamps) */ uint brcmf_sdiod_drive_strength = 6; module_param(brcmf_sdiod_drive_strength, uint, 0); /* Tx/Rx bounds */ extern uint brcmf_txbound; extern uint brcmf_rxbound; module_param(brcmf_txbound, uint, 0); module_param(brcmf_rxbound, uint, 0); /* Deferred transmits */ extern uint brcmf_deferred_tx; module_param(brcmf_deferred_tx, uint, 0); #ifdef SDTEST /* Echo packet generator (pkts/s) */ uint brcmf_pktgen; module_param(brcmf_pktgen, uint, 0); /* Echo packet len (0 => sawtooth, max 2040) */ uint brcmf_pktgen_len; module_param(brcmf_pktgen_len, uint, 0); #endif /* Version string to report */ #ifdef BCMDBG #define DHD_COMPILED "\nCompiled in " SRCBASE #else #define DHD_COMPILED #endif static void brcmf_dpc(unsigned long data); static int brcmf_toe_get(dhd_info_t *dhd, int idx, u32 *toe_ol); static int brcmf_toe_set(dhd_info_t *dhd, int idx, u32 toe_ol); static int brcmf_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata, brcmf_event_msg_t *event_ptr, void **data_ptr); static void brcmf_set_packet_filter(int value, dhd_pub_t *dhd) { DHD_TRACE(("%s: %d\n", __func__, value)); /* 1 - Enable packet filter, only allow unicast packet to send up */ /* 0 - Disable packet filter */ if (brcmf_pkt_filter_enable) { int i; for (i = 0; i < dhd->pktfilter_count; i++) { brcmf_c_pktfilter_offload_set(dhd, dhd->pktfilter[i]); brcmf_c_pktfilter_offload_enable(dhd, dhd->pktfilter[i], value, brcmf_master_mode); } } } #if defined(CONFIG_HAS_EARLYSUSPEND) static int brcmf_set_suspend(int value, dhd_pub_t *dhd) { int power_mode = PM_MAX; /* wl_pkt_filter_enable_t enable_parm; */ char iovbuf[32]; int bcn_li_dtim = 3; DHD_TRACE(("%s: enter, value = %d in_suspend=%d\n", __func__, value, dhd->in_suspend)); if (dhd && dhd->up) { if (value && dhd->in_suspend) { /* Kernel suspended */ DHD_TRACE(("%s: force extra Suspend setting\n", __func__)); brcmf_proto_cdc_set_ioctl(dhd, 0, BRCMF_C_SET_PM, (char *)&power_mode, sizeof(power_mode)); /* Enable packet filter, only allow unicast packet to send up */ brcmf_set_packet_filter(1, dhd); /* if dtim skip setup as default force it * to wake each third dtim * for better power saving. * Note that side effect is chance to miss BC/MC * packet */ if ((dhd->dtim_skip == 0) || (dhd->dtim_skip == 1)) bcn_li_dtim = 3; else bcn_li_dtim = dhd->dtim_skip; brcmu_mkiovar("bcn_li_dtim", (char *)&bcn_li_dtim, 4, iovbuf, sizeof(iovbuf)); brcmf_proto_cdc_set_ioctl(dhd, 0, BRCMF_C_SET_VAR, iovbuf, sizeof(iovbuf)); } else { /* Kernel resumed */ DHD_TRACE(("%s: Remove extra suspend setting\n", __func__)); power_mode = PM_FAST; brcmf_proto_cdc_set_ioctl(dhd, 0, BRCMF_C_SET_PM, (char *)&power_mode, sizeof(power_mode)); /* disable pkt filter */ brcmf_set_packet_filter(0, dhd); /* restore pre-suspend setting for dtim_skip */ brcmu_mkiovar("bcn_li_dtim", (char *)&dhd->dtim_skip, 4, iovbuf, sizeof(iovbuf)); brcmf_proto_cdc_set_ioctl(dhd, 0, BRCMF_C_SET_VAR, iovbuf, sizeof(iovbuf)); } } return 0; } static void brcmf_suspend_resume_helper(struct dhd_info *dhd, int val) { dhd_pub_t *dhdp = &dhd->pub; brcmf_os_proto_block(dhdp); /* Set flag when early suspend was called */ dhdp->in_suspend = val; if (!dhdp->suspend_disable_flag) brcmf_set_suspend(val, dhdp); brcmf_os_proto_unblock(dhdp); } static void brcmf_early_suspend(struct early_suspend *h) { struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend); DHD_TRACE(("%s: enter\n", __func__)); if (dhd) dhd_suspend_resume_helper(dhd, 1); } static void brcmf_late_resume(struct early_suspend *h) { struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend); DHD_TRACE(("%s: enter\n", __func__)); if (dhd) dhd_suspend_resume_helper(dhd, 0); } #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */ /* * Generalized timeout mechanism. Uses spin sleep with exponential * back-off until * the sleep time reaches one jiffy, then switches over to task delay. Usage: * * brcmf_timeout_start(&tmo, usec); * while (!brcmf_timeout_expired(&tmo)) * if (poll_something()) * break; * if (brcmf_timeout_expired(&tmo)) * fatal(); */ void brcmf_timeout_start(dhd_timeout_t *tmo, uint usec) { tmo->limit = usec; tmo->increment = 0; tmo->elapsed = 0; tmo->tick = 1000000 / HZ; } int brcmf_timeout_expired(dhd_timeout_t *tmo) { /* Does nothing the first call */ if (tmo->increment == 0) { tmo->increment = 1; return 0; } if (tmo->elapsed >= tmo->limit) return 1; /* Add the delay that's about to take place */ tmo->elapsed += tmo->increment; if (tmo->increment < tmo->tick) { udelay(tmo->increment); tmo->increment *= 2; if (tmo->increment > tmo->tick) tmo->increment = tmo->tick; } else { wait_queue_head_t delay_wait; DECLARE_WAITQUEUE(wait, current); int pending; init_waitqueue_head(&delay_wait); add_wait_queue(&delay_wait, &wait); set_current_state(TASK_INTERRUPTIBLE); schedule_timeout(1); pending = signal_pending(current); remove_wait_queue(&delay_wait, &wait); set_current_state(TASK_RUNNING); if (pending) return 1; /* Interrupted */ } return 0; } static int brcmf_net2idx(dhd_info_t *dhd, struct net_device *net) { int i = 0; ASSERT(dhd); while (i < DHD_MAX_IFS) { if (dhd->iflist[i] && (dhd->iflist[i]->net == net)) return i; i++; } return DHD_BAD_IF; } int brcmf_ifname2idx(dhd_info_t *dhd, char *name) { int i = DHD_MAX_IFS; ASSERT(dhd); if (name == NULL || *name == '\0') return 0; while (--i > 0) if (dhd->iflist[i] && !strncmp(dhd->iflist[i]->name, name, IFNAMSIZ)) break; DHD_TRACE(("%s: return idx %d for \"%s\"\n", __func__, i, name)); return i; /* default - the primary interface */ } char *brcmf_ifname(dhd_pub_t *dhdp, int ifidx) { dhd_info_t *dhd = (dhd_info_t *) dhdp->info; ASSERT(dhd); if (ifidx < 0 || ifidx >= DHD_MAX_IFS) { DHD_ERROR(("%s: ifidx %d out of range\n", __func__, ifidx)); return ""; } if (dhd->iflist[ifidx] == NULL) { DHD_ERROR(("%s: null i/f %d\n", __func__, ifidx)); return ""; } if (dhd->iflist[ifidx]->net) return dhd->iflist[ifidx]->net->name; return ""; } static void _brcmf_set_multicast_list(dhd_info_t *dhd, int ifidx) { struct net_device *dev; struct netdev_hw_addr *ha; u32 allmulti, cnt; wl_ioctl_t ioc; char *buf, *bufp; uint buflen; int ret; ASSERT(dhd && dhd->iflist[ifidx]); dev = dhd->iflist[ifidx]->net; cnt = netdev_mc_count(dev); /* Determine initial value of allmulti flag */ allmulti = (dev->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) { DHD_ERROR(("%s: out of memory for mcast_list, cnt %d\n", brcmf_ifname(&dhd->pub, ifidx), cnt)); return; } strcpy(bufp, "mcast_list"); bufp += strlen("mcast_list") + 1; cnt = cpu_to_le32(cnt); memcpy(bufp, &cnt, sizeof(cnt)); bufp += sizeof(cnt); netdev_for_each_mc_addr(ha, dev) { if (!cnt) break; memcpy(bufp, ha->addr, ETH_ALEN); bufp += ETH_ALEN; cnt--; } memset(&ioc, 0, sizeof(ioc)); ioc.cmd = BRCMF_C_SET_VAR; ioc.buf = buf; ioc.len = buflen; ioc.set = true; ret = brcmf_proto_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len); if (ret < 0) { DHD_ERROR(("%s: set mcast_list failed, cnt %d\n", brcmf_ifname(&dhd->pub, ifidx), 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) { DHD_ERROR(("%s: out of memory for allmulti\n", brcmf_ifname(&dhd->pub, ifidx))); return; } allmulti = cpu_to_le32(allmulti); if (!brcmu_mkiovar ("allmulti", (void *)&allmulti, sizeof(allmulti), buf, buflen)) { DHD_ERROR(("%s: mkiovar failed for allmulti, datalen %d " "buflen %u\n", brcmf_ifname(&dhd->pub, ifidx), (int)sizeof(allmulti), buflen)); kfree(buf); return; } memset(&ioc, 0, sizeof(ioc)); ioc.cmd = BRCMF_C_SET_VAR; ioc.buf = buf; ioc.len = buflen; ioc.set = true; ret = brcmf_proto_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len); if (ret < 0) { DHD_ERROR(("%s: set allmulti %d failed\n", brcmf_ifname(&dhd->pub, ifidx), le32_to_cpu(allmulti))); } kfree(buf); /* Finally, pick up the PROMISC flag as well, like the NIC driver does */ allmulti = (dev->flags & IFF_PROMISC) ? true : false; allmulti = cpu_to_le32(allmulti); memset(&ioc, 0, sizeof(ioc)); ioc.cmd = BRCMF_C_SET_PROMISC; ioc.buf = &allmulti; ioc.len = sizeof(allmulti); ioc.set = true; ret = brcmf_proto_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len); if (ret < 0) { DHD_ERROR(("%s: set promisc %d failed\n", brcmf_ifname(&dhd->pub, ifidx), le32_to_cpu(allmulti))); } } static int _brcmf_set_mac_address(dhd_info_t *dhd, int ifidx, u8 *addr) { char buf[32]; wl_ioctl_t ioc; int ret; DHD_TRACE(("%s enter\n", __func__)); if (!brcmu_mkiovar ("cur_etheraddr", (char *)addr, ETH_ALEN, buf, 32)) { DHD_ERROR(("%s: mkiovar failed for cur_etheraddr\n", brcmf_ifname(&dhd->pub, ifidx))); return -1; } memset(&ioc, 0, sizeof(ioc)); ioc.cmd = BRCMF_C_SET_VAR; ioc.buf = buf; ioc.len = 32; ioc.set = true; ret = brcmf_proto_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len); if (ret < 0) { DHD_ERROR(("%s: set cur_etheraddr failed\n", brcmf_ifname(&dhd->pub, ifidx))); } else { memcpy(dhd->iflist[ifidx]->net->dev_addr, addr, ETH_ALEN); } return ret; } #ifdef SOFTAP extern struct net_device *ap_net_dev; #endif static void brcmf_op_if(dhd_if_t *ifp) { dhd_info_t *dhd; int ret = 0, err = 0; ASSERT(ifp && ifp->info && ifp->idx); /* Virtual interfaces only */ dhd = ifp->info; DHD_TRACE(("%s: idx %d, state %d\n", __func__, ifp->idx, ifp->state)); switch (ifp->state) { case BRCMF_E_IF_ADD: /* * Delete the existing interface before overwriting it * in case we missed the BRCMF_E_IF_DEL event. */ if (ifp->net != NULL) { DHD_ERROR(("%s: ERROR: netdev:%s already exists, " "try free & unregister\n", __func__, ifp->net->name)); netif_stop_queue(ifp->net); unregister_netdev(ifp->net); free_netdev(ifp->net); } /* Allocate etherdev, including space for private structure */ ifp->net = alloc_etherdev(sizeof(dhd)); if (!ifp->net) { DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__)); ret = -ENOMEM; } if (ret == 0) { strcpy(ifp->net->name, ifp->name); memcpy(netdev_priv(ifp->net), &dhd, sizeof(dhd)); err = brcmf_net_attach(&dhd->pub, ifp->idx); if (err != 0) { DHD_ERROR(("%s: dhd_net_attach failed, " "err %d\n", __func__, err)); ret = -EOPNOTSUPP; } else { #ifdef SOFTAP /* semaphore that the soft AP CODE waits on */ extern struct semaphore ap_eth_sema; /* save ptr to wl0.1 netdev for use in wl_iw.c */ ap_net_dev = ifp->net; /* signal to the SOFTAP 'sleeper' thread, wl0.1 is ready */ up(&ap_eth_sema); #endif DHD_TRACE(("\n ==== pid:%x, net_device for " "if:%s created ===\n\n", current->pid, ifp->net->name)); ifp->state = 0; } } break; case BRCMF_E_IF_DEL: if (ifp->net != NULL) { DHD_TRACE(("\n%s: got 'WLC_E_IF_DEL' state\n", __func__)); netif_stop_queue(ifp->net); unregister_netdev(ifp->net); ret = DHD_DEL_IF; /* Make sure the free_netdev() is called */ } break; default: DHD_ERROR(("%s: bad op %d\n", __func__, ifp->state)); ASSERT(!ifp->state); break; } if (ret < 0) { if (ifp->net) free_netdev(ifp->net); dhd->iflist[ifp->idx] = NULL; kfree(ifp); #ifdef SOFTAP if (ifp->net == ap_net_dev) ap_net_dev = NULL; /* NULL SOFTAP global wl0.1 as well */ #endif /* SOFTAP */ } } static int _brcmf_sysioc_thread(void *data) { dhd_info_t *dhd = (dhd_info_t *) data; int i; #ifdef SOFTAP bool in_ap = false; #endif allow_signal(SIGTERM); while (down_interruptible(&dhd->sysioc_sem) == 0) { if (kthread_should_stop()) break; for (i = 0; i < DHD_MAX_IFS; i++) { if (dhd->iflist[i]) { #ifdef SOFTAP in_ap = (ap_net_dev != NULL); #endif /* SOFTAP */ if (dhd->iflist[i]->state) brcmf_op_if(dhd->iflist[i]); #ifdef SOFTAP if (dhd->iflist[i] == NULL) { DHD_TRACE(("\n\n %s: interface %d " "removed!\n", __func__, i)); continue; } if (in_ap && dhd->set_macaddress) { DHD_TRACE(("attempt to set MAC for %s " "in AP Mode," "blocked.\n", dhd->iflist[i]->net->name)); dhd->set_macaddress = false; continue; } if (in_ap && dhd->set_multicast) { DHD_TRACE(("attempt to set MULTICAST list for %s" "in AP Mode, blocked.\n", dhd->iflist[i]->net->name)); dhd->set_multicast = false; continue; } #endif /* SOFTAP */ if (dhd->set_multicast) { dhd->set_multicast = false; _brcmf_set_multicast_list(dhd, i); } if (dhd->set_macaddress) { dhd->set_macaddress = false; _brcmf_set_mac_address(dhd, i, dhd->macvalue); } } } } return 0; } static int brcmf_netdev_set_mac_address(struct net_device *dev, void *addr) { int ret = 0; dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev); struct sockaddr *sa = (struct sockaddr *)addr; int ifidx; ifidx = brcmf_net2idx(dhd, dev); if (ifidx == DHD_BAD_IF) return -1; ASSERT(dhd->sysioc_tsk); memcpy(&dhd->macvalue, sa->sa_data, ETH_ALEN); dhd->set_macaddress = true; up(&dhd->sysioc_sem); return ret; } static void brcmf_netdev_set_multicast_list(struct net_device *dev) { dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev); int ifidx; ifidx = brcmf_net2idx(dhd, dev); if (ifidx == DHD_BAD_IF) return; ASSERT(dhd->sysioc_tsk); dhd->set_multicast = true; up(&dhd->sysioc_sem); } int brcmf_sendpkt(dhd_pub_t *dhdp, int ifidx, struct sk_buff *pktbuf) { dhd_info_t *dhd = (dhd_info_t *) (dhdp->info); /* Reject if down */ if (!dhdp->up || (dhdp->busstate == DHD_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)) dhdp->tx_multicast++; if (ntohs(eh->h_proto) == ETH_P_PAE) atomic_inc(&dhd->pend_8021x_cnt); } /* If the protocol uses a data header, apply it */ brcmf_proto_hdrpush(dhdp, ifidx, pktbuf); /* Use bus module to send data frame */ return brcmf_sdbrcm_bus_txdata(dhdp->bus, pktbuf); } static int brcmf_netdev_start_xmit(struct sk_buff *skb, struct net_device *net) { int ret; dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net); int ifidx; DHD_TRACE(("%s: Enter\n", __func__)); /* Reject if down */ if (!dhd->pub.up || (dhd->pub.busstate == DHD_BUS_DOWN)) { DHD_ERROR(("%s: xmit rejected pub.up=%d busstate=%d\n", __func__, dhd->pub.up, dhd->pub.busstate)); netif_stop_queue(net); return -ENODEV; } ifidx = brcmf_net2idx(dhd, net); if (ifidx == DHD_BAD_IF) { DHD_ERROR(("%s: bad ifidx %d\n", __func__, ifidx)); netif_stop_queue(net); return -ENODEV; } /* Make sure there's enough room for any header */ if (skb_headroom(skb) < dhd->pub.hdrlen) { struct sk_buff *skb2; DHD_INFO(("%s: insufficient headroom\n", brcmf_ifname(&dhd->pub, ifidx))); dhd->pub.tx_realloc++; skb2 = skb_realloc_headroom(skb, dhd->pub.hdrlen); dev_kfree_skb(skb); skb = skb2; if (skb == NULL) { DHD_ERROR(("%s: skb_realloc_headroom failed\n", brcmf_ifname(&dhd->pub, ifidx))); ret = -ENOMEM; goto done; } } ret = brcmf_sendpkt(&dhd->pub, ifidx, skb); done: if (ret) dhd->pub.dstats.tx_dropped++; else dhd->pub.tx_packets++; /* Return ok: we always eat the packet */ return 0; } void brcmf_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool state) { struct net_device *net; dhd_info_t *dhd = dhdp->info; DHD_TRACE(("%s: Enter\n", __func__)); dhdp->txoff = state; ASSERT(dhd && dhd->iflist[ifidx]); net = dhd->iflist[ifidx]->net; if (state == ON) netif_stop_queue(net); else netif_wake_queue(net); } void brcmf_rx_frame(dhd_pub_t *dhdp, int ifidx, struct sk_buff *skb, int numpkt) { dhd_info_t *dhd = (dhd_info_t *) dhdp->info; unsigned char *eth; uint len; void *data; struct sk_buff *pnext, *save_pktbuf; int i; dhd_if_t *ifp; brcmf_event_msg_t event; DHD_TRACE(("%s: Enter\n", __func__)); 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 = dhd->iflist[ifidx]; if (ifp == NULL) ifp = dhd->iflist[0]; ASSERT(ifp); skb->dev = ifp->net; skb->protocol = eth_type_trans(skb, skb->dev); if (skb->pkt_type == PACKET_MULTICAST) dhd->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_BRCM) brcmf_host_event(dhd, &ifidx, skb_mac_header(skb), &event, &data); ASSERT(ifidx < DHD_MAX_IFS && dhd->iflist[ifidx]); if (dhd->iflist[ifidx] && !dhd->iflist[ifidx]->state) ifp = dhd->iflist[ifidx]; if (ifp->net) ifp->net->last_rx = jiffies; dhdp->dstats.rx_bytes += skb->len; dhdp->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_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx) { /* Linux version has nothing to do */ return; } void brcmf_txcomplete(dhd_pub_t *dhdp, struct sk_buff *txp, bool success) { uint ifidx; dhd_info_t *dhd = (dhd_info_t *) (dhdp->info); struct ethhdr *eh; u16 type; brcmf_proto_hdrpull(dhdp, &ifidx, txp); eh = (struct ethhdr *)(txp->data); type = ntohs(eh->h_proto); if (type == ETH_P_PAE) atomic_dec(&dhd->pend_8021x_cnt); } static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *net) { dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net); dhd_if_t *ifp; int ifidx; DHD_TRACE(("%s: Enter\n", __func__)); ifidx = brcmf_net2idx(dhd, net); if (ifidx == DHD_BAD_IF) return NULL; ifp = dhd->iflist[ifidx]; ASSERT(dhd && ifp); if (dhd->pub.up) { /* Use the protocol to get dongle stats */ brcmf_proto_dstats(&dhd->pub); } /* Copy dongle stats to net device stats */ ifp->stats.rx_packets = dhd->pub.dstats.rx_packets; ifp->stats.tx_packets = dhd->pub.dstats.tx_packets; ifp->stats.rx_bytes = dhd->pub.dstats.rx_bytes; ifp->stats.tx_bytes = dhd->pub.dstats.tx_bytes; ifp->stats.rx_errors = dhd->pub.dstats.rx_errors; ifp->stats.tx_errors = dhd->pub.dstats.tx_errors; ifp->stats.rx_dropped = dhd->pub.dstats.rx_dropped; ifp->stats.tx_dropped = dhd->pub.dstats.tx_dropped; ifp->stats.multicast = dhd->pub.dstats.multicast; return &ifp->stats; } static int brcmf_watchdog_thread(void *data) { dhd_info_t *dhd = (dhd_info_t *) data; /* This thread doesn't need any user-level access, * so get rid of all our resources */ if (brcmf_watchdog_prio > 0) { struct sched_param param; param.sched_priority = (brcmf_watchdog_prio < MAX_RT_PRIO) ? brcmf_watchdog_prio : (MAX_RT_PRIO - 1); sched_setscheduler(current, SCHED_FIFO, ¶m); } allow_signal(SIGTERM); /* Run until signal received */ while (1) { if (kthread_should_stop()) break; if (down_interruptible(&dhd->watchdog_sem) == 0) { if (dhd->pub.dongle_reset == false) { /* Call the bus module watchdog */ brcmf_sdbrcm_bus_watchdog(&dhd->pub); } /* Count the tick for reference */ dhd->pub.tickcnt++; } else break; } return 0; } static void brcmf_watchdog(unsigned long data) { dhd_info_t *dhd = (dhd_info_t *) data; if (dhd->watchdog_tsk) { up(&dhd->watchdog_sem); /* Reschedule the watchdog */ if (dhd->wd_timer_valid) { mod_timer(&dhd->timer, jiffies + brcmf_watchdog_ms * HZ / 1000); } return; } /* Call the bus module watchdog */ brcmf_sdbrcm_bus_watchdog(&dhd->pub); /* Count the tick for reference */ dhd->pub.tickcnt++; /* Reschedule the watchdog */ if (dhd->wd_timer_valid) mod_timer(&dhd->timer, jiffies + brcmf_watchdog_ms * HZ / 1000); } static int brcmf_dpc_thread(void *data) { dhd_info_t *dhd = (dhd_info_t *) data; /* This thread doesn't need any user-level access, * so get rid of all our resources */ if (brcmf_dpc_prio > 0) { struct sched_param param; param.sched_priority = (brcmf_dpc_prio < MAX_RT_PRIO) ? brcmf_dpc_prio : (MAX_RT_PRIO - 1); sched_setscheduler(current, SCHED_FIFO, ¶m); } allow_signal(SIGTERM); /* Run until signal received */ while (1) { if (kthread_should_stop()) break; if (down_interruptible(&dhd->dpc_sem) == 0) { /* Call bus dpc unless it indicated down (then clean stop) */ if (dhd->pub.busstate != DHD_BUS_DOWN) { if (dhd_bus_dpc(dhd->pub.bus)) { up(&dhd->dpc_sem); } } else { brcmf_sdbrcm_bus_stop(dhd->pub.bus, true); } } else break; } return 0; } static void brcmf_dpc(unsigned long data) { dhd_info_t *dhd; dhd = (dhd_info_t *) data; /* Call bus dpc unless it indicated down (then clean stop) */ if (dhd->pub.busstate != DHD_BUS_DOWN) { if (dhd_bus_dpc(dhd->pub.bus)) tasklet_schedule(&dhd->tasklet); } else { brcmf_sdbrcm_bus_stop(dhd->pub.bus, true); } } void brcmf_sched_dpc(dhd_pub_t *dhdp) { dhd_info_t *dhd = (dhd_info_t *) dhdp->info; if (dhd->dpc_tsk) { up(&dhd->dpc_sem); return; } tasklet_schedule(&dhd->tasklet); } /* Retrieve current toe component enables, which are kept as a bitmap in toe_ol iovar */ static int brcmf_toe_get(dhd_info_t *dhd, int ifidx, u32 *toe_ol) { wl_ioctl_t ioc; char buf[32]; int ret; memset(&ioc, 0, sizeof(ioc)); ioc.cmd = BRCMF_C_GET_VAR; ioc.buf = buf; ioc.len = (uint) sizeof(buf); ioc.set = false; strcpy(buf, "toe_ol"); ret = brcmf_proto_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len); if (ret < 0) { /* Check for older dongle image that doesn't support toe_ol */ if (ret == -EIO) { DHD_ERROR(("%s: toe not supported by device\n", brcmf_ifname(&dhd->pub, ifidx))); return -EOPNOTSUPP; } DHD_INFO(("%s: could not get toe_ol: ret=%d\n", brcmf_ifname(&dhd->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(dhd_info_t *dhd, int ifidx, u32 toe_ol) { wl_ioctl_t ioc; char buf[32]; int toe, ret; memset(&ioc, 0, sizeof(ioc)); ioc.cmd = BRCMF_C_SET_VAR; ioc.buf = buf; ioc.len = (uint) sizeof(buf); ioc.set = true; /* Set toe_ol as requested */ strcpy(buf, "toe_ol"); memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(u32)); ret = brcmf_proto_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len); if (ret < 0) { DHD_ERROR(("%s: could not set toe_ol: ret=%d\n", brcmf_ifname(&dhd->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_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len); if (ret < 0) { DHD_ERROR(("%s: could not set toe: ret=%d\n", brcmf_ifname(&dhd->pub, ifidx), ret)); return ret; } return 0; } static void brcmf_ethtool_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info) { dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net); sprintf(info->driver, KBUILD_MODNAME); sprintf(info->version, "%lu", dhd->pub.drv_version); sprintf(info->fw_version, "%s", wl_cfg80211_get_fwname()); sprintf(info->bus_info, "%s", dev_name(&wl_cfg80211_get_sdio_func()->dev)); } struct ethtool_ops brcmf_ethtool_ops = { .get_drvinfo = brcmf_ethtool_get_drvinfo }; static int brcmf_ethtool(dhd_info_t *dhd, void *uaddr) { struct ethtool_drvinfo info; char drvname[sizeof(info.driver)]; u32 cmd; struct ethtool_value edata; u32 toe_cmpnt, csum_dir; int ret; DHD_TRACE(("%s: Enter\n", __func__)); /* 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 dhd requested, identify ourselves */ if (strcmp(drvname, "?dhd") == 0) { sprintf(info.driver, "dhd"); strcpy(info.version, EPI_VERSION_STR); } /* otherwise, require dongle to be up */ else if (!dhd->pub.up) { DHD_ERROR(("%s: dongle is not up\n", __func__)); return -ENODEV; } /* finally, report dongle driver type */ else if (dhd->pub.iswl) sprintf(info.driver, "wl"); else sprintf(info.driver, "xx"); sprintf(info.version, "%lu", dhd->pub.drv_version); if (copy_to_user(uaddr, &info, sizeof(info))) return -EFAULT; DHD_CTL(("%s: given %*s, returning %s\n", __func__, (int)sizeof(drvname), drvname, info.driver)); break; /* Get toe offload components from dongle */ case ETHTOOL_GRXCSUM: case ETHTOOL_GTXCSUM: ret = brcmf_toe_get(dhd, 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(dhd, 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(dhd, 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) dhd->iflist[0]->net->features |= NETIF_F_IP_CSUM; else dhd->iflist[0]->net->features &= ~NETIF_F_IP_CSUM; } break; default: return -EOPNOTSUPP; } return 0; } static int brcmf_netdev_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd) { dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net); dhd_ioctl_t ioc; int bcmerror = 0; int buflen = 0; void *buf = NULL; uint driver = 0; int ifidx; bool is_set_key_cmd; ifidx = brcmf_net2idx(dhd, net); DHD_TRACE(("%s: ifidx %d, cmd 0x%04x\n", __func__, ifidx, cmd)); if (ifidx == DHD_BAD_IF) return -1; if (cmd == SIOCETHTOOL) return brcmf_ethtool(dhd, (void *)ifr->ifr_data); if (cmd != SIOCDEVPRIVATE) return -EOPNOTSUPP; memset(&ioc, 0, sizeof(ioc)); /* Copy the ioc control structure part of ioctl request */ if (copy_from_user(&ioc, ifr->ifr_data, sizeof(wl_ioctl_t))) { bcmerror = -EINVAL; goto done; } /* Copy out any buffer passed */ if (ioc.buf) { buflen = min_t(int, ioc.len, DHD_IOCTL_MAXLEN); /* optimization for direct ioctl calls from kernel */ /* if (segment_eq(get_fs(), KERNEL_DS)) { buf = ioc.buf; } else { */ { buf = kmalloc(buflen, GFP_ATOMIC); if (!buf) { bcmerror = -ENOMEM; goto done; } if (copy_from_user(buf, ioc.buf, buflen)) { bcmerror = -EINVAL; goto done; } } } /* To differentiate between wl and dhd read 4 more byes */ if ((copy_from_user(&driver, (char *)ifr->ifr_data + sizeof(wl_ioctl_t), sizeof(uint)) != 0)) { bcmerror = -EINVAL; goto done; } if (!capable(CAP_NET_ADMIN)) { bcmerror = -EPERM; goto done; } /* check for local dhd ioctl and handle it */ if (driver == DHD_IOCTL_MAGIC) { bcmerror = brcmf_c_ioctl((void *)&dhd->pub, &ioc, buf, buflen); if (bcmerror) dhd->pub.bcmerror = bcmerror; goto done; } /* send to dongle (must be up, and wl) */ if ((dhd->pub.busstate != DHD_BUS_DATA)) { DHD_ERROR(("%s DONGLE_DOWN,__func__\n", __func__)); bcmerror = -EIO; goto done; } if (!dhd->pub.iswl) { bcmerror = -EIO; goto done; } /* * Intercept BRCMF_C_SET_KEY IOCTL - serialize M4 send and * set key IOCTL to prevent M4 encryption. */ is_set_key_cmd = ((ioc.cmd == BRCMF_C_SET_KEY) || ((ioc.cmd == BRCMF_C_SET_VAR) && !(strncmp("wsec_key", ioc.buf, 9))) || ((ioc.cmd == BRCMF_C_SET_VAR) && !(strncmp("bsscfg:wsec_key", ioc.buf, 15)))); if (is_set_key_cmd) brcmf_netdev_wait_pend8021x(net); bcmerror = brcmf_proto_ioctl(&dhd->pub, ifidx, (wl_ioctl_t *)&ioc, buf, buflen); done: if (!bcmerror && buf && ioc.buf) { if (copy_to_user(ioc.buf, buf, buflen)) bcmerror = -EFAULT; } kfree(buf); if (bcmerror > 0) bcmerror = 0; return bcmerror; } static int brcmf_netdev_stop(struct net_device *net) { #if !defined(IGNORE_ETH0_DOWN) dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net); DHD_TRACE(("%s: Enter\n", __func__)); wl_cfg80211_down(); if (dhd->pub.up == 0) return 0; /* Set state and stop OS transmissions */ dhd->pub.up = 0; netif_stop_queue(net); #else DHD_ERROR(("BYPASS %s:due to BRCM compilation : under investigation\n", __func__)); #endif /* !defined(IGNORE_ETH0_DOWN) */ return 0; } static int brcmf_netdev_open(struct net_device *net) { dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(net); u32 toe_ol; int ifidx = brcmf_net2idx(dhd, net); s32 ret = 0; DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx)); if (ifidx == 0) { /* do it only for primary eth0 */ /* try to bring up bus */ ret = brcmf_bus_start(&dhd->pub); if (ret != 0) { DHD_ERROR(("%s: failed with code %d\n", __func__, ret)); return -1; } atomic_set(&dhd->pend_8021x_cnt, 0); memcpy(net->dev_addr, dhd->pub.mac, ETH_ALEN); /* Get current TOE mode from dongle */ if (brcmf_toe_get(dhd, ifidx, &toe_ol) >= 0 && (toe_ol & TOE_TX_CSUM_OL) != 0) dhd->iflist[ifidx]->net->features |= NETIF_F_IP_CSUM; else dhd->iflist[ifidx]->net->features &= ~NETIF_F_IP_CSUM; } /* Allow transmit calls */ netif_start_queue(net); dhd->pub.up = 1; if (unlikely(wl_cfg80211_up())) { DHD_ERROR(("%s: failed to bring up cfg80211\n", __func__)); return -1; } return ret; } int brcmf_add_if(dhd_info_t *dhd, int ifidx, void *handle, char *name, u8 *mac_addr, u32 flags, u8 bssidx) { dhd_if_t *ifp; DHD_TRACE(("%s: idx %d, handle->%p\n", __func__, ifidx, handle)); ASSERT(dhd && (ifidx < DHD_MAX_IFS)); ifp = dhd->iflist[ifidx]; if (!ifp) { ifp = kmalloc(sizeof(dhd_if_t), GFP_ATOMIC); if (!ifp) { DHD_ERROR(("%s: OOM - dhd_if_t\n", __func__)); return -ENOMEM; } } memset(ifp, 0, sizeof(dhd_if_t)); ifp->info = dhd; dhd->iflist[ifidx] = ifp; strlcpy(ifp->name, name, IFNAMSIZ); if (mac_addr != NULL) memcpy(&ifp->mac_addr, mac_addr, ETH_ALEN); if (handle == NULL) { ifp->state = BRCMF_E_IF_ADD; ifp->idx = ifidx; ASSERT(dhd->sysioc_tsk); up(&dhd->sysioc_sem); } else ifp->net = (struct net_device *)handle; return 0; } void brcmf_del_if(dhd_info_t *dhd, int ifidx) { dhd_if_t *ifp; DHD_TRACE(("%s: idx %d\n", __func__, ifidx)); ASSERT(dhd && ifidx && (ifidx < DHD_MAX_IFS)); ifp = dhd->iflist[ifidx]; if (!ifp) { DHD_ERROR(("%s: Null interface\n", __func__)); return; } ifp->state = BRCMF_E_IF_DEL; ifp->idx = ifidx; ASSERT(dhd->sysioc_tsk); up(&dhd->sysioc_sem); } dhd_pub_t *brcmf_attach(struct dhd_bus *bus, uint bus_hdrlen) { dhd_info_t *dhd = NULL; struct net_device *net; DHD_TRACE(("%s: Enter\n", __func__)); /* updates firmware nvram path if it was provided as module paramters */ if ((firmware_path != NULL) && (firmware_path[0] != '\0')) strcpy(brcmf_fw_path, firmware_path); if ((nvram_path != NULL) && (nvram_path[0] != '\0')) strcpy(brcmf_nv_path, nvram_path); /* Allocate etherdev, including space for private structure */ net = alloc_etherdev(sizeof(dhd)); if (!net) { DHD_ERROR(("%s: OOM - alloc_etherdev\n", __func__)); goto fail; } /* Allocate primary dhd_info */ dhd = kzalloc(sizeof(dhd_info_t), GFP_ATOMIC); if (!dhd) { DHD_ERROR(("%s: OOM - alloc dhd_info\n", __func__)); goto fail; } /* * Save the dhd_info into the priv */ memcpy(netdev_priv(net), &dhd, sizeof(dhd)); /* Set network interface name if it was provided as module parameter */ if (iface_name[0]) { int len; char ch; strncpy(net->name, iface_name, IFNAMSIZ); net->name[IFNAMSIZ - 1] = 0; len = strlen(net->name); ch = net->name[len - 1]; if ((ch > '9' || ch < '0') && (len < IFNAMSIZ - 2)) strcat(net->name, "%d"); } if (brcmf_add_if(dhd, 0, (void *)net, net->name, NULL, 0, 0) == DHD_BAD_IF) goto fail; net->netdev_ops = NULL; sema_init(&dhd->proto_sem, 1); /* Initialize other structure content */ init_waitqueue_head(&dhd->ioctl_resp_wait); init_waitqueue_head(&dhd->ctrl_wait); /* Initialize the spinlocks */ spin_lock_init(&dhd->sdlock); /* Link to info module */ dhd->pub.info = dhd; /* Link to bus module */ dhd->pub.bus = bus; dhd->pub.hdrlen = bus_hdrlen; /* Attach and link in the protocol */ if (brcmf_proto_attach(&dhd->pub) != 0) { DHD_ERROR(("dhd_prot_attach failed\n")); goto fail; } /* Attach and link in the cfg80211 */ if (unlikely(wl_cfg80211_attach(net, &dhd->pub))) { DHD_ERROR(("wl_cfg80211_attach failed\n")); goto fail; } if (!brcmf_no_fw_req) { strcpy(brcmf_fw_path, wl_cfg80211_get_fwname()); strcpy(brcmf_nv_path, wl_cfg80211_get_nvramname()); } /* Set up the watchdog timer */ init_timer(&dhd->timer); dhd->timer.data = (unsigned long) dhd; dhd->timer.function = brcmf_watchdog; /* Initialize thread based operation and lock */ sema_init(&dhd->sdsem, 1); if ((brcmf_watchdog_prio >= 0) && (brcmf_dpc_prio >= 0)) dhd->threads_only = true; else dhd->threads_only = false; if (brcmf_dpc_prio >= 0) { /* Initialize watchdog thread */ sema_init(&dhd->watchdog_sem, 0); dhd->watchdog_tsk = kthread_run(brcmf_watchdog_thread, dhd, "dhd_watchdog"); if (IS_ERR(dhd->watchdog_tsk)) { printk(KERN_WARNING "dhd_watchdog thread failed to start\n"); dhd->watchdog_tsk = NULL; } } else { dhd->watchdog_tsk = NULL; } /* Set up the bottom half handler */ if (brcmf_dpc_prio >= 0) { /* Initialize DPC thread */ sema_init(&dhd->dpc_sem, 0); dhd->dpc_tsk = kthread_run(brcmf_dpc_thread, dhd, "dhd_dpc"); if (IS_ERR(dhd->dpc_tsk)) { printk(KERN_WARNING "dhd_dpc thread failed to start\n"); dhd->dpc_tsk = NULL; } } else { tasklet_init(&dhd->tasklet, brcmf_dpc, (unsigned long) dhd); dhd->dpc_tsk = NULL; } if (brcmf_sysioc) { sema_init(&dhd->sysioc_sem, 0); dhd->sysioc_tsk = kthread_run(_brcmf_sysioc_thread, dhd, "_dhd_sysioc"); if (IS_ERR(dhd->sysioc_tsk)) { printk(KERN_WARNING "_dhd_sysioc thread failed to start\n"); dhd->sysioc_tsk = NULL; } } else dhd->sysioc_tsk = NULL; /* * Save the dhd_info into the priv */ memcpy(netdev_priv(net), &dhd, sizeof(dhd)); #if defined(CUSTOMER_HW2) && defined(CONFIG_WIFI_CONTROL_FUNC) g_bus = bus; #endif #if defined(CONFIG_PM_SLEEP) atomic_set(&brcmf_mmc_suspend, false); #endif /* defined(CONFIG_PM_SLEEP) */ /* && defined(DHD_GPL) */ /* Init lock suspend to prevent kernel going to suspend */ #ifdef CONFIG_HAS_EARLYSUSPEND dhd->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 20; dhd->early_suspend.suspend = brcmf_early_suspend; dhd->early_suspend.resume = brcmf_late_resume; register_early_suspend(&dhd->early_suspend); #endif return &dhd->pub; fail: if (net) free_netdev(net); if (dhd) brcmf_detach(&dhd->pub); return NULL; } int brcmf_bus_start(dhd_pub_t *dhdp) { int ret = -1; dhd_info_t *dhd = (dhd_info_t *) dhdp->info; char iovbuf[WL_EVENTING_MASK_LEN + 12]; /* Room for "event_msgs" + '\0' + bitvec */ ASSERT(dhd); DHD_TRACE(("%s:\n", __func__)); /* try to download image and nvram to the dongle */ if (dhd->pub.busstate == DHD_BUS_DOWN) { if (!(dhd_bus_download_firmware(dhd->pub.bus, brcmf_fw_path, brcmf_nv_path))) { DHD_ERROR(("%s: dhd_bus_download_firmware failed. " "firmware = %s nvram = %s\n", __func__, brcmf_fw_path, brcmf_nv_path)); return -1; } } /* Start the watchdog timer */ dhd->pub.tickcnt = 0; brcmf_os_wd_timer(&dhd->pub, brcmf_watchdog_ms); /* Bring up the bus */ ret = brcmf_sdbrcm_bus_init(&dhd->pub, true); if (ret != 0) { DHD_ERROR(("%s, brcmf_sdbrcm_bus_init failed %d\n", __func__, ret)); return ret; } /* If bus is not ready, can't come up */ if (dhd->pub.busstate != DHD_BUS_DATA) { del_timer_sync(&dhd->timer); dhd->wd_timer_valid = false; DHD_ERROR(("%s failed bus is not ready\n", __func__)); return -ENODEV; } brcmu_mkiovar("event_msgs", dhdp->eventmask, WL_EVENTING_MASK_LEN, iovbuf, sizeof(iovbuf)); brcmf_proto_cdc_query_ioctl(dhdp, 0, BRCMF_C_GET_VAR, iovbuf, sizeof(iovbuf)); memcpy(dhdp->eventmask, iovbuf, WL_EVENTING_MASK_LEN); setbit(dhdp->eventmask, BRCMF_E_SET_SSID); setbit(dhdp->eventmask, BRCMF_E_PRUNE); setbit(dhdp->eventmask, BRCMF_E_AUTH); setbit(dhdp->eventmask, BRCMF_E_REASSOC); setbit(dhdp->eventmask, BRCMF_E_REASSOC_IND); setbit(dhdp->eventmask, BRCMF_E_DEAUTH_IND); setbit(dhdp->eventmask, BRCMF_E_DISASSOC_IND); setbit(dhdp->eventmask, BRCMF_E_DISASSOC); setbit(dhdp->eventmask, BRCMF_E_JOIN); setbit(dhdp->eventmask, BRCMF_E_ASSOC_IND); setbit(dhdp->eventmask, BRCMF_E_PSK_SUP); setbit(dhdp->eventmask, BRCMF_E_LINK); setbit(dhdp->eventmask, BRCMF_E_NDIS_LINK); setbit(dhdp->eventmask, BRCMF_E_MIC_ERROR); setbit(dhdp->eventmask, BRCMF_E_PMKID_CACHE); setbit(dhdp->eventmask, BRCMF_E_TXFAIL); setbit(dhdp->eventmask, BRCMF_E_JOIN_START); setbit(dhdp->eventmask, BRCMF_E_SCAN_COMPLETE); /* enable dongle roaming event */ dhdp->pktfilter_count = 1; /* Setup filter to allow only unicast */ dhdp->pktfilter[0] = "100 0 0 0 0x01 0x00"; /* Bus is ready, do any protocol initialization */ ret = brcmf_proto_init(&dhd->pub); if (ret < 0) return ret; return 0; } int brcmf_iovar(dhd_pub_t *pub, int ifidx, char *name, char *cmd_buf, uint cmd_len, int set) { char buf[strlen(name) + 1 + cmd_len]; int len = sizeof(buf); wl_ioctl_t ioc; int ret; len = brcmu_mkiovar(name, cmd_buf, cmd_len, buf, len); memset(&ioc, 0, sizeof(ioc)); ioc.cmd = set ? BRCMF_C_SET_VAR : BRCMF_C_GET_VAR; ioc.buf = buf; ioc.len = len; ioc.set = set; ret = brcmf_proto_ioctl(pub, ifidx, &ioc, ioc.buf, ioc.len); if (!set && ret >= 0) memcpy(cmd_buf, buf, cmd_len); return ret; } 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(dhd_pub_t *dhdp, int ifidx) { dhd_info_t *dhd = (dhd_info_t *) dhdp->info; struct net_device *net; u8 temp_addr[ETH_ALEN] = { 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33}; DHD_TRACE(("%s: ifidx %d\n", __func__, ifidx)); ASSERT(dhd && dhd->iflist[ifidx]); net = dhd->iflist[ifidx]->net; ASSERT(net); ASSERT(!net->netdev_ops); net->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, dhd->pub.mac, ETH_ALEN); } if (ifidx == 1) { DHD_TRACE(("%s ACCESS POINT MAC:\n", __func__)); /* ACCESSPOINT INTERFACE CASE */ temp_addr[0] |= 0X02; /* set bit 2 , - Locally Administered address */ } net->hard_header_len = ETH_HLEN + dhd->pub.hdrlen; net->ethtool_ops = &brcmf_ethtool_ops; dhd->pub.rxsz = net->mtu + net->hard_header_len + dhd->pub.hdrlen; memcpy(net->dev_addr, temp_addr, ETH_ALEN); if (register_netdev(net) != 0) { DHD_ERROR(("%s: couldn't register the net device\n", __func__)); goto fail; } DHD_INFO(("%s: Broadcom Dongle Host Driver\n", net->name)); return 0; fail: net->netdev_ops = NULL; return -EBADE; } static void brcmf_bus_detach(dhd_pub_t *dhdp) { dhd_info_t *dhd; DHD_TRACE(("%s: Enter\n", __func__)); if (dhdp) { dhd = (dhd_info_t *) dhdp->info; if (dhd) { /* Stop the protocol module */ brcmf_proto_stop(&dhd->pub); /* Stop the bus module */ brcmf_sdbrcm_bus_stop(dhd->pub.bus, true); /* Clear the watchdog timer */ del_timer_sync(&dhd->timer); dhd->wd_timer_valid = false; } } } void brcmf_detach(dhd_pub_t *dhdp) { dhd_info_t *dhd; DHD_TRACE(("%s: Enter\n", __func__)); if (dhdp) { dhd = (dhd_info_t *) dhdp->info; if (dhd) { dhd_if_t *ifp; int i; #if defined(CONFIG_HAS_EARLYSUSPEND) if (dhd->early_suspend.suspend) unregister_early_suspend(&dhd->early_suspend); #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */ for (i = 1; i < DHD_MAX_IFS; i++) if (dhd->iflist[i]) brcmf_del_if(dhd, i); ifp = dhd->iflist[0]; ASSERT(ifp); if (ifp->net->netdev_ops == &brcmf_netdev_ops_pri) { brcmf_netdev_stop(ifp->net); unregister_netdev(ifp->net); } if (dhd->watchdog_tsk) { send_sig(SIGTERM, dhd->watchdog_tsk, 1); kthread_stop(dhd->watchdog_tsk); dhd->watchdog_tsk = NULL; } if (dhd->dpc_tsk) { send_sig(SIGTERM, dhd->dpc_tsk, 1); kthread_stop(dhd->dpc_tsk); dhd->dpc_tsk = NULL; } else tasklet_kill(&dhd->tasklet); if (dhd->sysioc_tsk) { send_sig(SIGTERM, dhd->sysioc_tsk, 1); kthread_stop(dhd->sysioc_tsk); dhd->sysioc_tsk = NULL; } brcmf_bus_detach(dhdp); if (dhdp->prot) brcmf_proto_detach(dhdp); wl_cfg80211_detach(); /* && defined(DHD_GPL) */ free_netdev(ifp->net); kfree(ifp); kfree(dhd); } } } static void __exit brcmf_module_cleanup(void) { DHD_TRACE(("%s: Enter\n", __func__)); dhd_bus_unregister(); } static int __init brcmf_module_init(void) { int error; DHD_TRACE(("%s: Enter\n", __func__)); /* Sanity check on the module parameters */ do { /* Both watchdog and DPC as tasklets are ok */ if ((brcmf_watchdog_prio < 0) && (brcmf_dpc_prio < 0)) break; /* If both watchdog and DPC are threads, TX must be deferred */ if ((brcmf_watchdog_prio >= 0) && (brcmf_dpc_prio >= 0) && brcmf_deferred_tx) break; DHD_ERROR(("Invalid module parameters.\n")); return -EINVAL; } while (0); error = dhd_bus_register(); if (error) { DHD_ERROR(("%s: dhd_bus_register failed\n", __func__)); goto failed; } return 0; failed: return -EINVAL; } module_init(brcmf_module_init); module_exit(brcmf_module_cleanup); /* * OS specific functions required to implement DHD driver in OS independent way */ int brcmf_os_proto_block(dhd_pub_t *pub) { dhd_info_t *dhd = (dhd_info_t *) (pub->info); if (dhd) { down(&dhd->proto_sem); return 1; } return 0; } int brcmf_os_proto_unblock(dhd_pub_t *pub) { dhd_info_t *dhd = (dhd_info_t *) (pub->info); if (dhd) { up(&dhd->proto_sem); return 1; } return 0; } unsigned int brcmf_os_get_ioctl_resp_timeout(void) { return (unsigned int)brcmf_ioctl_timeout_msec; } void brcmf_os_set_ioctl_resp_timeout(unsigned int timeout_msec) { brcmf_ioctl_timeout_msec = (int)timeout_msec; } int brcmf_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition, bool *pending) { dhd_info_t *dhd = (dhd_info_t *) (pub->info); DECLARE_WAITQUEUE(wait, current); int timeout = brcmf_ioctl_timeout_msec; /* Convert timeout in millsecond to jiffies */ timeout = timeout * HZ / 1000; /* Wait until control frame is available */ add_wait_queue(&dhd->ioctl_resp_wait, &wait); set_current_state(TASK_INTERRUPTIBLE); while (!(*condition) && (!signal_pending(current) && timeout)) timeout = schedule_timeout(timeout); if (signal_pending(current)) *pending = true; set_current_state(TASK_RUNNING); remove_wait_queue(&dhd->ioctl_resp_wait, &wait); return timeout; } int brcmf_os_ioctl_resp_wake(dhd_pub_t *pub) { dhd_info_t *dhd = (dhd_info_t *) (pub->info); if (waitqueue_active(&dhd->ioctl_resp_wait)) wake_up_interruptible(&dhd->ioctl_resp_wait); return 0; } void brcmf_os_wd_timer(void *bus, uint wdtick) { dhd_pub_t *pub = bus; static uint save_dhd_watchdog_ms; dhd_info_t *dhd = (dhd_info_t *) pub->info; /* don't start the wd until fw is loaded */ if (pub->busstate == DHD_BUS_DOWN) return; /* Totally stop the timer */ if (!wdtick && dhd->wd_timer_valid == true) { del_timer_sync(&dhd->timer); dhd->wd_timer_valid = false; save_dhd_watchdog_ms = wdtick; return; } if (wdtick) { brcmf_watchdog_ms = (uint) wdtick; if (save_dhd_watchdog_ms != brcmf_watchdog_ms) { if (dhd->wd_timer_valid == true) /* Stop timer and restart at new value */ del_timer_sync(&dhd->timer); /* Create timer again when watchdog period is dynamically changed or in the first instance */ dhd->timer.expires = jiffies + brcmf_watchdog_ms * HZ / 1000; add_timer(&dhd->timer); } else { /* Re arm the timer, at last watchdog period */ mod_timer(&dhd->timer, jiffies + brcmf_watchdog_ms * HZ / 1000); } dhd->wd_timer_valid = true; save_dhd_watchdog_ms = wdtick; } } void *brcmf_os_open_image(char *filename) { struct file *fp; if (!brcmf_no_fw_req) return wl_cfg80211_request_fw(filename); fp = filp_open(filename, O_RDONLY, 0); /* * 2.6.11 (FC4) supports filp_open() but later revs don't? * Alternative: * fp = open_namei(AT_FDCWD, filename, O_RD, 0); * ??? */ if (IS_ERR(fp)) fp = NULL; return fp; } int brcmf_os_get_image_block(char *buf, int len, void *image) { struct file *fp = (struct file *)image; int rdlen; if (!brcmf_no_fw_req) return wl_cfg80211_read_fw(buf, len); if (!image) return 0; rdlen = kernel_read(fp, fp->f_pos, buf, len); if (rdlen > 0) fp->f_pos += rdlen; return rdlen; } void brcmf_os_close_image(void *image) { if (!brcmf_no_fw_req) return wl_cfg80211_release_fw(); if (image) filp_close((struct file *)image, NULL); } void brcmf_os_sdlock(dhd_pub_t *pub) { dhd_info_t *dhd; dhd = (dhd_info_t *) (pub->info); if (dhd->threads_only) down(&dhd->sdsem); else spin_lock_bh(&dhd->sdlock); } void brcmf_os_sdunlock(dhd_pub_t *pub) { dhd_info_t *dhd; dhd = (dhd_info_t *) (pub->info); if (dhd->threads_only) up(&dhd->sdsem); else spin_unlock_bh(&dhd->sdlock); } static int brcmf_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata, brcmf_event_msg_t *event, void **data) { int bcmerror = 0; ASSERT(dhd != NULL); bcmerror = brcmf_c_host_event(dhd, ifidx, pktdata, event, data); if (bcmerror != 0) return bcmerror; ASSERT(dhd->iflist[*ifidx] != NULL); ASSERT(dhd->iflist[*ifidx]->net != NULL); if (dhd->iflist[*ifidx]->net) wl_cfg80211_event(dhd->iflist[*ifidx]->net, event, *data); return bcmerror; } void brcmf_wait_for_event(dhd_pub_t *dhd, bool *lockvar) { struct dhd_info *dhdinfo = dhd->info; brcmf_os_sdunlock(dhd); wait_event_interruptible_timeout(dhdinfo->ctrl_wait, (*lockvar == false), HZ * 2); brcmf_os_sdlock(dhd); return; } void brcmf_wait_event_wakeup(dhd_pub_t *dhd) { struct dhd_info *dhdinfo = dhd->info; if (waitqueue_active(&dhdinfo->ctrl_wait)) wake_up_interruptible(&dhdinfo->ctrl_wait); return; } int brcmf_netdev_reset(struct net_device *dev, u8 flag) { dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev); /* Turning off watchdog */ if (flag) brcmf_os_wd_timer(&dhd->pub, 0); brcmf_bus_devreset(&dhd->pub, flag); /* Turning on watchdog back */ if (!flag) brcmf_os_wd_timer(&dhd->pub, brcmf_watchdog_ms); DHD_ERROR(("%s: WLAN OFF DONE\n", __func__)); return 1; } int brcmf_netdev_set_suspend_disable(struct net_device *dev, int val) { dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev); int ret = 0; if (dhd) { ret = dhd->pub.suspend_disable_flag; dhd->pub.suspend_disable_flag = val; } return ret; } int brcmf_netdev_set_suspend(struct net_device *dev, int val) { int ret = 0; #if defined(CONFIG_HAS_EARLYSUSPEND) dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev); if (dhd) { brcmf_os_proto_block(&dhd->pub); ret = brcmf_set_suspend(val, &dhd->pub); brcmf_os_proto_unblock(&dhd->pub); } #endif /* defined(CONFIG_HAS_EARLYSUSPEND) */ return ret; } int brcmf_netdev_set_dtim_skip(struct net_device *dev, int val) { dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev); if (dhd) dhd->pub.dtim_skip = val; return 0; } int brcmf_netdev_set_packet_filter(struct net_device *dev, int val) { dhd_info_t *dhd = *(dhd_info_t **) netdev_priv(dev); int ret = 0; /* Packet filtering is set only if we still in early-suspend and * we need either to turn it ON or turn it OFF * We can always turn it OFF in case of early-suspend, but we turn it * back ON only if suspend_disable_flag was not set */ if (dhd && dhd->pub.up) { brcmf_os_proto_block(&dhd->pub); if (dhd->pub.in_suspend) { if (!val || (val && !dhd->pub.suspend_disable_flag)) brcmf_set_packet_filter(val, &dhd->pub); } brcmf_os_proto_unblock(&dhd->pub); } return ret; } void brcmf_netdev_init_ioctl(struct net_device *dev) { dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev); brcmf_c_preinit_ioctls(&dhd->pub); } static int brcmf_get_pend_8021x_cnt(dhd_info_t *dhd) { return atomic_read(&dhd->pend_8021x_cnt); } #define MAX_WAIT_FOR_8021X_TX 10 int brcmf_netdev_wait_pend8021x(struct net_device *dev) { dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev); int timeout = 10 * HZ / 1000; int ntimes = MAX_WAIT_FOR_8021X_TX; int pend = brcmf_get_pend_8021x_cnt(dhd); 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(dhd); } return pend; } void brcmf_netdev_os_wd_timer(struct net_device *ndev, uint wdtick) { dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(ndev); brcmf_os_wd_timer(&dhd->pub, wdtick); } #ifdef BCMDBG int brcmf_write_to_file(dhd_pub_t *dhd, 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) { DHD_ERROR(("%s: open file error\n", __func__)); 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 */ #if defined(BCMDBG) void osl_assert(char *exp, char *file, int line) { char tempbuf[256]; char *basename; basename = strrchr(file, '/'); /* skip the '/' */ if (basename) basename++; if (!basename) basename = file; snprintf(tempbuf, 256, "assertion \"%s\" failed: file \"%s\", line %d\n", exp, basename, line); /* * Print assert message and give it time to * be written to /var/log/messages */ if (!in_interrupt()) { const int delay = 3; printk(KERN_ERR "%s", tempbuf); printk(KERN_ERR "panic in %d seconds\n", delay); set_current_state(TASK_INTERRUPTIBLE); schedule_timeout(delay * HZ); } switch (g_assert_type) { case 0: panic(KERN_ERR "%s", tempbuf); break; case 1: printk(KERN_ERR "%s", tempbuf); BUG(); break; case 2: printk(KERN_ERR "%s", tempbuf); break; default: break; } } #endif /* defined(BCMDBG) */