From 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Fri, 25 Mar 2016 03:53:42 -0300 Subject: Linux-libre 4.5-gnu --- .../wireless/broadcom/brcm80211/brcmfmac/core.c | 1356 ++++++++++++++++++++ 1 file changed, 1356 insertions(+) create mode 100644 drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c (limited to 'drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c') diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c new file mode 100644 index 000000000..ed9998b69 --- /dev/null +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c @@ -0,0 +1,1356 @@ +/* + * 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 "core.h" +#include "bus.h" +#include "debug.h" +#include "fwil_types.h" +#include "p2p.h" +#include "cfg80211.h" +#include "fwil.h" +#include "fwsignal.h" +#include "feature.h" +#include "proto.h" +#include "pcie.h" +#include "common.h" + +MODULE_AUTHOR("Broadcom Corporation"); +MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver."); +MODULE_LICENSE("Dual BSD/GPL"); + +#define MAX_WAIT_FOR_8021X_TX msecs_to_jiffies(50) + +/* AMPDU rx reordering definitions */ +#define BRCMF_RXREORDER_FLOWID_OFFSET 0 +#define BRCMF_RXREORDER_MAXIDX_OFFSET 2 +#define BRCMF_RXREORDER_FLAGS_OFFSET 4 +#define BRCMF_RXREORDER_CURIDX_OFFSET 6 +#define BRCMF_RXREORDER_EXPIDX_OFFSET 8 + +#define BRCMF_RXREORDER_DEL_FLOW 0x01 +#define BRCMF_RXREORDER_FLUSH_ALL 0x02 +#define BRCMF_RXREORDER_CURIDX_VALID 0x04 +#define BRCMF_RXREORDER_EXPIDX_VALID 0x08 +#define BRCMF_RXREORDER_NEW_HOLE 0x10 + +#define BRCMF_BSSIDX_INVALID -1 + +char *brcmf_ifname(struct brcmf_if *ifp) +{ + if (!ifp) + return ""; + + if (ifp->ndev) + return ifp->ndev->name; + + return ""; +} + +struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx) +{ + struct brcmf_if *ifp; + s32 bsscfgidx; + + if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) { + brcmf_err("ifidx %d out of range\n", ifidx); + return NULL; + } + + ifp = NULL; + bsscfgidx = drvr->if2bss[ifidx]; + if (bsscfgidx >= 0) + ifp = drvr->iflist[bsscfgidx]; + + return ifp; +} + +static void _brcmf_set_multicast_list(struct work_struct *work) +{ + struct brcmf_if *ifp; + struct net_device *ndev; + struct netdev_hw_addr *ha; + u32 cmd_value, cnt; + __le32 cnt_le; + char *buf, *bufp; + u32 buflen; + s32 err; + + ifp = container_of(work, struct brcmf_if, multicast_work); + + brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); + + ndev = ifp->ndev; + + /* Determine initial value of allmulti flag */ + cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false; + + /* Send down the multicast list first. */ + cnt = netdev_mc_count(ndev); + buflen = sizeof(cnt) + (cnt * ETH_ALEN); + buf = kmalloc(buflen, GFP_ATOMIC); + if (!buf) + return; + bufp = buf; + + cnt_le = cpu_to_le32(cnt); + memcpy(bufp, &cnt_le, sizeof(cnt_le)); + bufp += sizeof(cnt_le); + + netdev_for_each_mc_addr(ha, ndev) { + if (!cnt) + break; + memcpy(bufp, ha->addr, ETH_ALEN); + bufp += ETH_ALEN; + cnt--; + } + + err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen); + if (err < 0) { + brcmf_err("Setting mcast_list failed, %d\n", err); + cmd_value = cnt ? true : cmd_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... + */ + err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value); + if (err < 0) + brcmf_err("Setting allmulti failed, %d\n", err); + + /*Finally, pick up the PROMISC flag */ + cmd_value = (ndev->flags & IFF_PROMISC) ? true : false; + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value); + if (err < 0) + brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n", + err); +} + +static void +_brcmf_set_mac_address(struct work_struct *work) +{ + struct brcmf_if *ifp; + s32 err; + + ifp = container_of(work, struct brcmf_if, setmacaddr_work); + + brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); + + err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr, + ETH_ALEN); + if (err < 0) { + brcmf_err("Setting cur_etheraddr failed, %d\n", err); + } else { + brcmf_dbg(TRACE, "MAC address updated to %pM\n", + ifp->mac_addr); + memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN); + } +} + +static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct sockaddr *sa = (struct sockaddr *)addr; + + memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN); + schedule_work(&ifp->setmacaddr_work); + return 0; +} + +static void brcmf_netdev_set_multicast_list(struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + + schedule_work(&ifp->multicast_work); +} + +static netdev_tx_t 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; + struct ethhdr *eh = (struct ethhdr *)(skb->data); + + brcmf_dbg(DATA, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); + + /* Can the device send data? */ + if (drvr->bus_if->state != BRCMF_BUS_UP) { + brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state); + netif_stop_queue(ndev); + dev_kfree_skb(skb); + ret = -ENODEV; + goto done; + } + + /* 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(ifp)); + drvr->bus_if->tx_realloc++; + skb2 = skb_realloc_headroom(skb, drvr->hdrlen); + dev_kfree_skb(skb); + skb = skb2; + if (skb == NULL) { + brcmf_err("%s: skb_realloc_headroom failed\n", + brcmf_ifname(ifp)); + ret = -ENOMEM; + goto done; + } + } + + /* validate length for ether packet */ + if (skb->len < sizeof(*eh)) { + ret = -EINVAL; + dev_kfree_skb(skb); + goto done; + } + + if (eh->h_proto == htons(ETH_P_PAE)) + atomic_inc(&ifp->pend_8021x_cnt); + + ret = brcmf_fws_process_skb(ifp, skb); + +done: + if (ret) { + ifp->stats.tx_dropped++; + } else { + ifp->stats.tx_packets++; + ifp->stats.tx_bytes += skb->len; + } + + /* Return ok: we always eat the packet */ + return NETDEV_TX_OK; +} + +void brcmf_txflowblock_if(struct brcmf_if *ifp, + enum brcmf_netif_stop_reason reason, bool state) +{ + unsigned long flags; + + if (!ifp || !ifp->ndev) + return; + + brcmf_dbg(TRACE, "enter: bsscfgidx=%d stop=0x%X reason=%d state=%d\n", + ifp->bsscfgidx, ifp->netif_stop, reason, state); + + spin_lock_irqsave(&ifp->netif_stop_lock, flags); + if (state) { + if (!ifp->netif_stop) + netif_stop_queue(ifp->ndev); + ifp->netif_stop |= reason; + } else { + ifp->netif_stop &= ~reason; + if (!ifp->netif_stop) + netif_wake_queue(ifp->ndev); + } + spin_unlock_irqrestore(&ifp->netif_stop_lock, flags); +} + +void brcmf_txflowblock(struct device *dev, bool state) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + + brcmf_dbg(TRACE, "Enter\n"); + + brcmf_fws_bus_blocked(drvr, state); +} + +void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb) +{ + skb->dev = ifp->ndev; + skb->protocol = eth_type_trans(skb, skb->dev); + + if (skb->pkt_type == PACKET_MULTICAST) + ifp->stats.multicast++; + + /* Process special event packets */ + brcmf_fweh_process_skb(ifp->drvr, skb); + + if (!(ifp->ndev->flags & IFF_UP)) { + brcmu_pkt_buf_free_skb(skb); + return; + } + + ifp->stats.rx_bytes += skb->len; + ifp->stats.rx_packets++; + + brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol)); + 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. This is handled by netif_rx_ni(). + */ + netif_rx_ni(skb); +} + +static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi, + u8 start, u8 end, + struct sk_buff_head *skb_list) +{ + /* initialize return list */ + __skb_queue_head_init(skb_list); + + if (rfi->pend_pkts == 0) { + brcmf_dbg(INFO, "no packets in reorder queue\n"); + return; + } + + do { + if (rfi->pktslots[start]) { + __skb_queue_tail(skb_list, rfi->pktslots[start]); + rfi->pktslots[start] = NULL; + } + start++; + if (start > rfi->max_idx) + start = 0; + } while (start != end); + rfi->pend_pkts -= skb_queue_len(skb_list); +} + +static void brcmf_rxreorder_process_info(struct brcmf_if *ifp, u8 *reorder_data, + struct sk_buff *pkt) +{ + u8 flow_id, max_idx, cur_idx, exp_idx, end_idx; + struct brcmf_ampdu_rx_reorder *rfi; + struct sk_buff_head reorder_list; + struct sk_buff *pnext; + u8 flags; + u32 buf_size; + + flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET]; + flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET]; + + /* validate flags and flow id */ + if (flags == 0xFF) { + brcmf_err("invalid flags...so ignore this packet\n"); + brcmf_netif_rx(ifp, pkt); + return; + } + + rfi = ifp->drvr->reorder_flows[flow_id]; + if (flags & BRCMF_RXREORDER_DEL_FLOW) { + brcmf_dbg(INFO, "flow-%d: delete\n", + flow_id); + + if (rfi == NULL) { + brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n", + flow_id); + brcmf_netif_rx(ifp, pkt); + return; + } + + brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx, + &reorder_list); + /* add the last packet */ + __skb_queue_tail(&reorder_list, pkt); + kfree(rfi); + ifp->drvr->reorder_flows[flow_id] = NULL; + goto netif_rx; + } + /* from here on we need a flow reorder instance */ + if (rfi == NULL) { + buf_size = sizeof(*rfi); + max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET]; + + buf_size += (max_idx + 1) * sizeof(pkt); + + /* allocate space for flow reorder info */ + brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n", + flow_id, max_idx); + rfi = kzalloc(buf_size, GFP_ATOMIC); + if (rfi == NULL) { + brcmf_err("failed to alloc buffer\n"); + brcmf_netif_rx(ifp, pkt); + return; + } + + ifp->drvr->reorder_flows[flow_id] = rfi; + rfi->pktslots = (struct sk_buff **)(rfi+1); + rfi->max_idx = max_idx; + } + if (flags & BRCMF_RXREORDER_NEW_HOLE) { + if (rfi->pend_pkts) { + brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, + rfi->exp_idx, + &reorder_list); + WARN_ON(rfi->pend_pkts); + } else { + __skb_queue_head_init(&reorder_list); + } + rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET]; + rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET]; + rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET]; + rfi->pktslots[rfi->cur_idx] = pkt; + rfi->pend_pkts++; + brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n", + flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts); + } else if (flags & BRCMF_RXREORDER_CURIDX_VALID) { + cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET]; + exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET]; + + if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) { + /* still in the current hole */ + /* enqueue the current on the buffer chain */ + if (rfi->pktslots[cur_idx] != NULL) { + brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n"); + brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]); + rfi->pktslots[cur_idx] = NULL; + } + rfi->pktslots[cur_idx] = pkt; + rfi->pend_pkts++; + rfi->cur_idx = cur_idx; + brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n", + flow_id, cur_idx, exp_idx, rfi->pend_pkts); + + /* can return now as there is no reorder + * list to process. + */ + return; + } + if (rfi->exp_idx == cur_idx) { + if (rfi->pktslots[cur_idx] != NULL) { + brcmf_dbg(INFO, "error buffer pending..free it\n"); + brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]); + rfi->pktslots[cur_idx] = NULL; + } + rfi->pktslots[cur_idx] = pkt; + rfi->pend_pkts++; + + /* got the expected one. flush from current to expected + * and update expected + */ + brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n", + flow_id, cur_idx, exp_idx, rfi->pend_pkts); + + rfi->cur_idx = cur_idx; + rfi->exp_idx = exp_idx; + + brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx, + &reorder_list); + brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n", + flow_id, skb_queue_len(&reorder_list), + rfi->pend_pkts); + } else { + u8 end_idx; + + brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n", + flow_id, flags, rfi->cur_idx, rfi->exp_idx, + cur_idx, exp_idx); + if (flags & BRCMF_RXREORDER_FLUSH_ALL) + end_idx = rfi->exp_idx; + else + end_idx = exp_idx; + + /* flush pkts first */ + brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx, + &reorder_list); + + if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) { + __skb_queue_tail(&reorder_list, pkt); + } else { + rfi->pktslots[cur_idx] = pkt; + rfi->pend_pkts++; + } + rfi->exp_idx = exp_idx; + rfi->cur_idx = cur_idx; + } + } else { + /* explicity window move updating the expected index */ + exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET]; + + brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n", + flow_id, flags, rfi->exp_idx, exp_idx); + if (flags & BRCMF_RXREORDER_FLUSH_ALL) + end_idx = rfi->exp_idx; + else + end_idx = exp_idx; + + brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx, + &reorder_list); + __skb_queue_tail(&reorder_list, pkt); + /* set the new expected idx */ + rfi->exp_idx = exp_idx; + } +netif_rx: + skb_queue_walk_safe(&reorder_list, pkt, pnext) { + __skb_unlink(pkt, &reorder_list); + brcmf_netif_rx(ifp, pkt); + } +} + +void brcmf_rx_frame(struct device *dev, struct sk_buff *skb) +{ + struct brcmf_if *ifp; + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + struct brcmf_skb_reorder_data *rd; + int ret; + + brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb); + + /* process and remove protocol-specific header */ + ret = brcmf_proto_hdrpull(drvr, true, skb, &ifp); + + if (ret || !ifp || !ifp->ndev) { + if (ret != -ENODATA && ifp) + ifp->stats.rx_errors++; + brcmu_pkt_buf_free_skb(skb); + return; + } + + rd = (struct brcmf_skb_reorder_data *)skb->cb; + if (rd->reorder) + brcmf_rxreorder_process_info(ifp, rd->reorder, skb); + else + brcmf_netif_rx(ifp, skb); +} + +void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success) +{ + struct ethhdr *eh; + u16 type; + + eh = (struct ethhdr *)(txp->data); + type = ntohs(eh->h_proto); + + if (type == ETH_P_PAE) { + atomic_dec(&ifp->pend_8021x_cnt); + if (waitqueue_active(&ifp->pend_8021x_wait)) + wake_up(&ifp->pend_8021x_wait); + } + + if (!success) + ifp->stats.tx_errors++; + + brcmu_pkt_buf_free_skb(txp); +} + +void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + struct brcmf_if *ifp; + + /* await txstatus signal for firmware if active */ + if (brcmf_fws_fc_active(drvr->fws)) { + if (!success) + brcmf_fws_bustxfail(drvr->fws, txp); + } else { + if (brcmf_proto_hdrpull(drvr, false, txp, &ifp)) + brcmu_pkt_buf_free_skb(txp); + else + brcmf_txfinalize(ifp, txp, success); + } +} + +static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + + brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); + + return &ifp->stats; +} + +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; + char drev[BRCMU_DOTREV_LEN] = "n/a"; + + if (drvr->revinfo.result == 0) + brcmu_dotrev_str(drvr->revinfo.driverrev, drev); + strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); + strlcpy(info->version, drev, sizeof(info->version)); + strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version)); + strlcpy(info->bus_info, dev_name(drvr->bus_if->dev), + sizeof(info->bus_info)); +} + +static const struct ethtool_ops brcmf_ethtool_ops = { + .get_drvinfo = brcmf_ethtool_get_drvinfo, +}; + +static int brcmf_netdev_stop(struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + + brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); + + brcmf_cfg80211_down(ndev); + + brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", NULL, 0); + + brcmf_net_setcarrier(ifp, false); + + 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; + + brcmf_dbg(TRACE, "Enter, bsscfgidx=%d\n", ifp->bsscfgidx); + + /* If bus is not ready, can't continue */ + if (bus_if->state != BRCMF_BUS_UP) { + brcmf_err("failed bus is not ready\n"); + return -EAGAIN; + } + + atomic_set(&ifp->pend_8021x_cnt, 0); + + /* Get current TOE mode from dongle */ + if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0 + && (toe_ol & TOE_TX_CSUM_OL) != 0) + ndev->features |= NETIF_F_IP_CSUM; + else + ndev->features &= ~NETIF_F_IP_CSUM; + + if (brcmf_cfg80211_up(ndev)) { + brcmf_err("failed to bring up cfg80211\n"); + return -EIO; + } + + /* Clear, carrier, set when connected or AP mode. */ + netif_carrier_off(ndev); + return 0; +} + +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_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_net_attach(struct brcmf_if *ifp, bool rtnl_locked) +{ + struct brcmf_pub *drvr = ifp->drvr; + struct net_device *ndev; + s32 err; + + brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, + ifp->mac_addr); + ndev = ifp->ndev; + + /* set appropriate operations */ + ndev->netdev_ops = &brcmf_netdev_ops_pri; + + ndev->hard_header_len += drvr->hdrlen; + ndev->ethtool_ops = &brcmf_ethtool_ops; + + drvr->rxsz = ndev->mtu + ndev->hard_header_len + + drvr->hdrlen; + + /* set the mac address */ + memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); + + INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address); + INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list); + + if (rtnl_locked) + err = register_netdevice(ndev); + else + err = register_netdev(ndev); + if (err != 0) { + brcmf_err("couldn't register the net device\n"); + goto fail; + } + + brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); + return 0; + +fail: + drvr->iflist[ifp->bsscfgidx] = NULL; + ndev->netdev_ops = NULL; + free_netdev(ndev); + return -EBADE; +} + +static void brcmf_net_detach(struct net_device *ndev) +{ + if (ndev->reg_state == NETREG_REGISTERED) + unregister_netdev(ndev); + else + brcmf_cfg80211_free_netdev(ndev); +} + +void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on) +{ + struct net_device *ndev; + + brcmf_dbg(TRACE, "Enter, bsscfgidx=%d carrier=%d\n", ifp->bsscfgidx, + on); + + ndev = ifp->ndev; + brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_DISCONNECTED, !on); + if (on) { + if (!netif_carrier_ok(ndev)) + netif_carrier_on(ndev); + + } else { + if (netif_carrier_ok(ndev)) + netif_carrier_off(ndev); + } +} + +static int brcmf_net_p2p_open(struct net_device *ndev) +{ + brcmf_dbg(TRACE, "Enter\n"); + + return brcmf_cfg80211_up(ndev); +} + +static int brcmf_net_p2p_stop(struct net_device *ndev) +{ + brcmf_dbg(TRACE, "Enter\n"); + + return brcmf_cfg80211_down(ndev); +} + +static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb, + struct net_device *ndev) +{ + if (skb) + dev_kfree_skb_any(skb); + + return NETDEV_TX_OK; +} + +static const struct net_device_ops brcmf_netdev_ops_p2p = { + .ndo_open = brcmf_net_p2p_open, + .ndo_stop = brcmf_net_p2p_stop, + .ndo_start_xmit = brcmf_net_p2p_start_xmit +}; + +static int brcmf_net_p2p_attach(struct brcmf_if *ifp) +{ + struct net_device *ndev; + + brcmf_dbg(TRACE, "Enter, bsscfgidx=%d mac=%pM\n", ifp->bsscfgidx, + ifp->mac_addr); + ndev = ifp->ndev; + + ndev->netdev_ops = &brcmf_netdev_ops_p2p; + + /* set the mac address */ + memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); + + if (register_netdev(ndev) != 0) { + brcmf_err("couldn't register the p2p net device\n"); + goto fail; + } + + brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); + + return 0; + +fail: + ifp->drvr->iflist[ifp->bsscfgidx] = NULL; + ndev->netdev_ops = NULL; + free_netdev(ndev); + return -EBADE; +} + +struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx, + bool is_p2pdev, char *name, u8 *mac_addr) +{ + struct brcmf_if *ifp; + struct net_device *ndev; + + brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, ifidx); + + ifp = drvr->iflist[bsscfgidx]; + /* + * Delete the existing interface before overwriting it + * in case we missed the BRCMF_E_IF_DEL event. + */ + if (ifp) { + if (ifidx) { + brcmf_err("ERROR: netdev:%s already exists\n", + ifp->ndev->name); + netif_stop_queue(ifp->ndev); + brcmf_net_detach(ifp->ndev); + drvr->iflist[bsscfgidx] = NULL; + } else { + brcmf_dbg(INFO, "netdev:%s ignore IF event\n", + ifp->ndev->name); + return ERR_PTR(-EINVAL); + } + } + + if (!drvr->settings->p2p_enable && is_p2pdev) { + /* this is P2P_DEVICE interface */ + brcmf_dbg(INFO, "allocate non-netdev interface\n"); + ifp = kzalloc(sizeof(*ifp), GFP_KERNEL); + if (!ifp) + return ERR_PTR(-ENOMEM); + } else { + brcmf_dbg(INFO, "allocate netdev interface\n"); + /* Allocate netdev, including space for private structure */ + ndev = alloc_netdev(sizeof(*ifp), is_p2pdev ? "p2p%d" : name, + NET_NAME_UNKNOWN, ether_setup); + if (!ndev) + return ERR_PTR(-ENOMEM); + + ndev->destructor = brcmf_cfg80211_free_netdev; + ifp = netdev_priv(ndev); + ifp->ndev = ndev; + /* store mapping ifidx to bsscfgidx */ + if (drvr->if2bss[ifidx] == BRCMF_BSSIDX_INVALID) + drvr->if2bss[ifidx] = bsscfgidx; + } + + ifp->drvr = drvr; + drvr->iflist[bsscfgidx] = ifp; + ifp->ifidx = ifidx; + ifp->bsscfgidx = bsscfgidx; + + init_waitqueue_head(&ifp->pend_8021x_wait); + spin_lock_init(&ifp->netif_stop_lock); + + if (mac_addr != NULL) + memcpy(ifp->mac_addr, mac_addr, ETH_ALEN); + + brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n", + current->pid, name, ifp->mac_addr); + + return ifp; +} + +static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx) +{ + struct brcmf_if *ifp; + + ifp = drvr->iflist[bsscfgidx]; + drvr->iflist[bsscfgidx] = NULL; + if (!ifp) { + brcmf_err("Null interface, bsscfgidx=%d\n", bsscfgidx); + return; + } + brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", bsscfgidx, + ifp->ifidx); + if (drvr->if2bss[ifp->ifidx] == bsscfgidx) + drvr->if2bss[ifp->ifidx] = BRCMF_BSSIDX_INVALID; + if (ifp->ndev) { + if (bsscfgidx == 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); + } + + if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { + cancel_work_sync(&ifp->setmacaddr_work); + cancel_work_sync(&ifp->multicast_work); + } + brcmf_net_detach(ifp->ndev); + } else { + /* Only p2p device interfaces which get dynamically created + * end up here. In this case the p2p module should be informed + * about the removal of the interface within the firmware. If + * not then p2p commands towards the firmware will cause some + * serious troublesome side effects. The p2p module will clean + * up the ifp if needed. + */ + brcmf_p2p_ifp_removed(ifp); + kfree(ifp); + } +} + +void brcmf_remove_interface(struct brcmf_if *ifp) +{ + if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp)) + return; + brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx, + ifp->ifidx); + brcmf_fws_del_interface(ifp); + brcmf_del_if(ifp->drvr, ifp->bsscfgidx); +} + +int brcmf_get_next_free_bsscfgidx(struct brcmf_pub *drvr) +{ + int ifidx; + int bsscfgidx; + bool available; + int highest; + + available = false; + bsscfgidx = 2; + highest = 2; + for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) { + if (drvr->iflist[ifidx]) { + if (drvr->iflist[ifidx]->bsscfgidx == bsscfgidx) + bsscfgidx = highest + 1; + else if (drvr->iflist[ifidx]->bsscfgidx > highest) + highest = drvr->iflist[ifidx]->bsscfgidx; + } else { + available = true; + } + } + + return available ? bsscfgidx : -ENOMEM; +} + +#ifdef CONFIG_INET +#define ARPOL_MAX_ENTRIES 8 +static int brcmf_inetaddr_changed(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct brcmf_pub *drvr = container_of(nb, struct brcmf_pub, + inetaddr_notifier); + struct in_ifaddr *ifa = data; + struct net_device *ndev = ifa->ifa_dev->dev; + struct brcmf_if *ifp; + int idx, i, ret; + u32 val; + __be32 addr_table[ARPOL_MAX_ENTRIES] = {0}; + + /* Find out if the notification is meant for us */ + for (idx = 0; idx < BRCMF_MAX_IFS; idx++) { + ifp = drvr->iflist[idx]; + if (ifp && ifp->ndev == ndev) + break; + if (idx == BRCMF_MAX_IFS - 1) + return NOTIFY_DONE; + } + + /* check if arp offload is supported */ + ret = brcmf_fil_iovar_int_get(ifp, "arpoe", &val); + if (ret) + return NOTIFY_OK; + + /* old version only support primary index */ + ret = brcmf_fil_iovar_int_get(ifp, "arp_version", &val); + if (ret) + val = 1; + if (val == 1) + ifp = drvr->iflist[0]; + + /* retrieve the table from firmware */ + ret = brcmf_fil_iovar_data_get(ifp, "arp_hostip", addr_table, + sizeof(addr_table)); + if (ret) { + brcmf_err("fail to get arp ip table err:%d\n", ret); + return NOTIFY_OK; + } + + for (i = 0; i < ARPOL_MAX_ENTRIES; i++) + if (ifa->ifa_address == addr_table[i]) + break; + + switch (action) { + case NETDEV_UP: + if (i == ARPOL_MAX_ENTRIES) { + brcmf_dbg(TRACE, "add %pI4 to arp table\n", + &ifa->ifa_address); + /* set it directly */ + ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip", + &ifa->ifa_address, sizeof(ifa->ifa_address)); + if (ret) + brcmf_err("add arp ip err %d\n", ret); + } + break; + case NETDEV_DOWN: + if (i < ARPOL_MAX_ENTRIES) { + addr_table[i] = 0; + brcmf_dbg(TRACE, "remove %pI4 from arp table\n", + &ifa->ifa_address); + /* clear the table in firmware */ + ret = brcmf_fil_iovar_data_set(ifp, "arp_hostip_clear", + NULL, 0); + if (ret) { + brcmf_err("fail to clear arp ip table err:%d\n", + ret); + return NOTIFY_OK; + } + for (i = 0; i < ARPOL_MAX_ENTRIES; i++) { + if (addr_table[i] != 0) { + brcmf_fil_iovar_data_set(ifp, + "arp_hostip", &addr_table[i], + sizeof(addr_table[i])); + if (ret) + brcmf_err("add arp ip err %d\n", + ret); + } + } + } + break; + default: + break; + } + + return NOTIFY_OK; +} +#endif + +int brcmf_attach(struct device *dev) +{ + struct brcmf_pub *drvr = NULL; + int ret = 0; + int i; + + brcmf_dbg(TRACE, "Enter\n"); + + /* Allocate primary brcmf_info */ + drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC); + if (!drvr) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(drvr->if2bss); i++) + drvr->if2bss[i] = BRCMF_BSSIDX_INVALID; + + mutex_init(&drvr->proto_block); + + /* Link to bus module */ + drvr->hdrlen = 0; + drvr->bus_if = dev_get_drvdata(dev); + drvr->bus_if->drvr = drvr; + + /* Initialize device specific settings */ + if (brcmf_mp_device_attach(drvr)) + goto fail; + + /* attach debug facilities */ + brcmf_debug_attach(drvr); + + /* Attach and link in the protocol */ + ret = brcmf_proto_attach(drvr); + if (ret != 0) { + brcmf_err("brcmf_prot_attach failed\n"); + goto fail; + } + + /* attach firmware event handler */ + brcmf_fweh_attach(drvr); + + return ret; + +fail: + brcmf_detach(dev); + + return ret; +} + +static int brcmf_revinfo_read(struct seq_file *s, void *data) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(s->private); + struct brcmf_rev_info *ri = &bus_if->drvr->revinfo; + char drev[BRCMU_DOTREV_LEN]; + char brev[BRCMU_BOARDREV_LEN]; + + seq_printf(s, "vendorid: 0x%04x\n", ri->vendorid); + seq_printf(s, "deviceid: 0x%04x\n", ri->deviceid); + seq_printf(s, "radiorev: %s\n", brcmu_dotrev_str(ri->radiorev, drev)); + seq_printf(s, "chipnum: %u (%x)\n", ri->chipnum, ri->chipnum); + seq_printf(s, "chiprev: %u\n", ri->chiprev); + seq_printf(s, "chippkg: %u\n", ri->chippkg); + seq_printf(s, "corerev: %u\n", ri->corerev); + seq_printf(s, "boardid: 0x%04x\n", ri->boardid); + seq_printf(s, "boardvendor: 0x%04x\n", ri->boardvendor); + seq_printf(s, "boardrev: %s\n", brcmu_boardrev_str(ri->boardrev, brev)); + seq_printf(s, "driverrev: %s\n", brcmu_dotrev_str(ri->driverrev, drev)); + seq_printf(s, "ucoderev: %u\n", ri->ucoderev); + seq_printf(s, "bus: %u\n", ri->bus); + seq_printf(s, "phytype: %u\n", ri->phytype); + seq_printf(s, "phyrev: %u\n", ri->phyrev); + seq_printf(s, "anarev: %u\n", ri->anarev); + seq_printf(s, "nvramrev: %08x\n", ri->nvramrev); + + return 0; +} + +int brcmf_bus_start(struct device *dev) +{ + int ret = -1; + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + struct brcmf_if *ifp; + struct brcmf_if *p2p_ifp; + + brcmf_dbg(TRACE, "\n"); + + /* add primary networking interface */ + ifp = brcmf_add_if(drvr, 0, 0, false, "wlan%d", NULL); + if (IS_ERR(ifp)) + return PTR_ERR(ifp); + + p2p_ifp = NULL; + + /* signal bus ready */ + brcmf_bus_change_state(bus_if, BRCMF_BUS_UP); + + /* Bus is ready, do any initialization */ + ret = brcmf_c_preinit_dcmds(ifp); + if (ret < 0) + goto fail; + + brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read); + + /* assure we have chipid before feature attach */ + if (!bus_if->chip) { + bus_if->chip = drvr->revinfo.chipnum; + bus_if->chiprev = drvr->revinfo.chiprev; + brcmf_dbg(INFO, "firmware revinfo: chip %x (%d) rev %d\n", + bus_if->chip, bus_if->chip, bus_if->chiprev); + } + brcmf_feat_attach(drvr); + + ret = brcmf_fws_init(drvr); + if (ret < 0) + goto fail; + + brcmf_fws_add_interface(ifp); + + drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev, + drvr->settings->p2p_enable); + if (drvr->config == NULL) { + ret = -ENOMEM; + goto fail; + } + + ret = brcmf_net_attach(ifp, false); + + if ((!ret) && (drvr->settings->p2p_enable)) { + p2p_ifp = drvr->iflist[1]; + if (p2p_ifp) + ret = brcmf_net_p2p_attach(p2p_ifp); + } + + if (ret) + goto fail; + +#ifdef CONFIG_INET + drvr->inetaddr_notifier.notifier_call = brcmf_inetaddr_changed; + ret = register_inetaddr_notifier(&drvr->inetaddr_notifier); +#endif + +fail: + if (ret < 0) { + brcmf_err("failed: %d\n", ret); + if (drvr->config) { + brcmf_cfg80211_detach(drvr->config); + drvr->config = NULL; + } + if (drvr->fws) { + brcmf_fws_del_interface(ifp); + brcmf_fws_deinit(drvr); + } + if (ifp) + brcmf_net_detach(ifp->ndev); + if (p2p_ifp) + brcmf_net_detach(p2p_ifp->ndev); + drvr->iflist[0] = NULL; + drvr->iflist[1] = NULL; + if (brcmf_ignoring_probe_fail(drvr)) + ret = 0; + return ret; + } + return 0; +} + +void brcmf_bus_add_txhdrlen(struct device *dev, uint len) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + + if (drvr) { + drvr->hdrlen += len; + } +} + +static void brcmf_bus_detach(struct brcmf_pub *drvr) +{ + brcmf_dbg(TRACE, "Enter\n"); + + if (drvr) { + /* Stop the bus module */ + brcmf_bus_stop(drvr->bus_if); + } +} + +void brcmf_dev_reset(struct device *dev) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + + if (drvr == NULL) + return; + + if (drvr->iflist[0]) + brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1); +} + +void brcmf_detach(struct device *dev) +{ + s32 i; + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + + brcmf_dbg(TRACE, "Enter\n"); + + if (drvr == NULL) + return; + +#ifdef CONFIG_INET + unregister_inetaddr_notifier(&drvr->inetaddr_notifier); +#endif + + /* stop firmware event handling */ + brcmf_fweh_detach(drvr); + if (drvr->config) + brcmf_p2p_detach(&drvr->config->p2p); + + brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN); + + /* make sure primary interface removed last */ + for (i = BRCMF_MAX_IFS-1; i > -1; i--) + brcmf_remove_interface(drvr->iflist[i]); + + brcmf_cfg80211_detach(drvr->config); + + brcmf_fws_deinit(drvr); + + brcmf_bus_detach(drvr); + + brcmf_proto_detach(drvr); + + brcmf_mp_device_detach(drvr); + + brcmf_debug_detach(drvr); + bus_if->drvr = NULL; + kfree(drvr); +} + +s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_if *ifp = bus_if->drvr->iflist[0]; + + return brcmf_fil_iovar_data_set(ifp, name, data, len); +} + +static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp) +{ + return atomic_read(&ifp->pend_8021x_cnt); +} + +int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp) +{ + int err; + + err = wait_event_timeout(ifp->pend_8021x_wait, + !brcmf_get_pend_8021x_cnt(ifp), + MAX_WAIT_FOR_8021X_TX); + + WARN_ON(!err); + + return !err; +} + +void brcmf_bus_change_state(struct brcmf_bus *bus, enum brcmf_bus_state state) +{ + struct brcmf_pub *drvr = bus->drvr; + struct net_device *ndev; + int ifidx; + + brcmf_dbg(TRACE, "%d -> %d\n", bus->state, state); + bus->state = state; + + if (state == BRCMF_BUS_UP) { + for (ifidx = 0; ifidx < BRCMF_MAX_IFS; ifidx++) { + if ((drvr->iflist[ifidx]) && + (drvr->iflist[ifidx]->ndev)) { + ndev = drvr->iflist[ifidx]->ndev; + if (netif_queue_stopped(ndev)) + netif_wake_queue(ndev); + } + } + } +} + +static void brcmf_driver_register(struct work_struct *work) +{ +#ifdef CONFIG_BRCMFMAC_SDIO + brcmf_sdio_register(); +#endif +#ifdef CONFIG_BRCMFMAC_USB + brcmf_usb_register(); +#endif +#ifdef CONFIG_BRCMFMAC_PCIE + brcmf_pcie_register(); +#endif +} +static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register); + +static int __init brcmfmac_module_init(void) +{ + brcmf_debugfs_init(); +#ifdef CONFIG_BRCMFMAC_SDIO + brcmf_sdio_init(); +#endif + 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 +#ifdef CONFIG_BRCMFMAC_PCIE + brcmf_pcie_exit(); +#endif + brcmf_debugfs_exit(); +} + +module_init(brcmfmac_module_init); +module_exit(brcmfmac_module_exit); -- cgit v1.2.3-54-g00ecf