diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac/fweh.c')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmfmac/fweh.c | 478 |
1 files changed, 0 insertions, 478 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fweh.c b/drivers/net/wireless/brcm80211/brcmfmac/fweh.c deleted file mode 100644 index 3878b6f6c..000000000 --- a/drivers/net/wireless/brcm80211/brcmfmac/fweh.c +++ /dev/null @@ -1,478 +0,0 @@ -/* - * Copyright (c) 2012 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/netdevice.h> - -#include "brcmu_wifi.h" -#include "brcmu_utils.h" - -#include "core.h" -#include "debug.h" -#include "tracepoint.h" -#include "fwsignal.h" -#include "fweh.h" -#include "fwil.h" - -/** - * struct brcm_ethhdr - broadcom specific ether header. - * - * @subtype: subtype for this packet. - * @length: TODO: length of appended data. - * @version: version indication. - * @oui: OUI of this packet. - * @usr_subtype: subtype for this OUI. - */ -struct brcm_ethhdr { - __be16 subtype; - __be16 length; - u8 version; - u8 oui[3]; - __be16 usr_subtype; -} __packed; - -struct brcmf_event_msg_be { - __be16 version; - __be16 flags; - __be32 event_type; - __be32 status; - __be32 reason; - __be32 auth_type; - __be32 datalen; - u8 addr[ETH_ALEN]; - char ifname[IFNAMSIZ]; - u8 ifidx; - u8 bsscfgidx; -} __packed; - -/** - * struct brcmf_event - contents of broadcom event packet. - * - * @eth: standard ether header. - * @hdr: broadcom specific ether header. - * @msg: common part of the actual event message. - */ -struct brcmf_event { - struct ethhdr eth; - struct brcm_ethhdr hdr; - struct brcmf_event_msg_be msg; -} __packed; - -/** - * struct brcmf_fweh_queue_item - event item on event queue. - * - * @q: list element for queuing. - * @code: event code. - * @ifidx: interface index related to this event. - * @ifaddr: ethernet address for interface. - * @emsg: common parameters of the firmware event message. - * @data: event specific data part of the firmware event. - */ -struct brcmf_fweh_queue_item { - struct list_head q; - enum brcmf_fweh_event_code code; - u8 ifidx; - u8 ifaddr[ETH_ALEN]; - struct brcmf_event_msg_be emsg; - u8 data[0]; -}; - -/** - * struct brcmf_fweh_event_name - code, name mapping entry. - */ -struct brcmf_fweh_event_name { - enum brcmf_fweh_event_code code; - const char *name; -}; - -#ifdef DEBUG -#define BRCMF_ENUM_DEF(id, val) \ - { val, #id }, - -/* array for mapping code to event name */ -static struct brcmf_fweh_event_name fweh_event_names[] = { - BRCMF_FWEH_EVENT_ENUM_DEFLIST -}; -#undef BRCMF_ENUM_DEF - -/** - * brcmf_fweh_event_name() - returns name for given event code. - * - * @code: code to lookup. - */ -static const char *brcmf_fweh_event_name(enum brcmf_fweh_event_code code) -{ - int i; - for (i = 0; i < ARRAY_SIZE(fweh_event_names); i++) { - if (fweh_event_names[i].code == code) - return fweh_event_names[i].name; - } - return "unknown"; -} -#else -static const char *brcmf_fweh_event_name(enum brcmf_fweh_event_code code) -{ - return "nodebug"; -} -#endif - -/** - * brcmf_fweh_queue_event() - create and queue event. - * - * @fweh: firmware event handling info. - * @event: event queue entry. - */ -static void brcmf_fweh_queue_event(struct brcmf_fweh_info *fweh, - struct brcmf_fweh_queue_item *event) -{ - ulong flags; - - spin_lock_irqsave(&fweh->evt_q_lock, flags); - list_add_tail(&event->q, &fweh->event_q); - spin_unlock_irqrestore(&fweh->evt_q_lock, flags); - schedule_work(&fweh->event_work); -} - -static int brcmf_fweh_call_event_handler(struct brcmf_if *ifp, - enum brcmf_fweh_event_code code, - struct brcmf_event_msg *emsg, - void *data) -{ - struct brcmf_fweh_info *fweh; - int err = -EINVAL; - - if (ifp) { - fweh = &ifp->drvr->fweh; - - /* handle the event if valid interface and handler */ - if (fweh->evt_handler[code]) - err = fweh->evt_handler[code](ifp, emsg, data); - else - brcmf_err("unhandled event %d ignored\n", code); - } else { - brcmf_err("no interface object\n"); - } - return err; -} - -/** - * brcmf_fweh_handle_if_event() - handle IF event. - * - * @drvr: driver information object. - * @item: queue entry. - * @ifpp: interface object (may change upon ADD action). - */ -static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr, - struct brcmf_event_msg *emsg, - void *data) -{ - struct brcmf_if_event *ifevent = data; - struct brcmf_if *ifp; - bool is_p2pdev; - int err = 0; - - brcmf_dbg(EVENT, "action: %u idx: %u bsscfg: %u flags: %u role: %u\n", - ifevent->action, ifevent->ifidx, ifevent->bssidx, - ifevent->flags, ifevent->role); - - /* The P2P Device interface event must not be ignored contrary to what - * firmware tells us. Older firmware uses p2p noif, with sta role. - * This should be accepted when p2pdev_setup is ongoing. TDLS setup will - * use the same ifevent and should be ignored. - */ - is_p2pdev = ((ifevent->flags & BRCMF_E_IF_FLAG_NOIF) && - (ifevent->role == BRCMF_E_IF_ROLE_P2P_CLIENT || - ((ifevent->role == BRCMF_E_IF_ROLE_STA) && - (drvr->fweh.p2pdev_setup_ongoing)))); - if (!is_p2pdev && (ifevent->flags & BRCMF_E_IF_FLAG_NOIF)) { - brcmf_dbg(EVENT, "event can be ignored\n"); - return; - } - if (ifevent->ifidx >= BRCMF_MAX_IFS) { - brcmf_err("invalid interface index: %u\n", ifevent->ifidx); - return; - } - - ifp = drvr->iflist[ifevent->bssidx]; - - if (ifevent->action == BRCMF_E_IF_ADD) { - brcmf_dbg(EVENT, "adding %s (%pM)\n", emsg->ifname, - emsg->addr); - ifp = brcmf_add_if(drvr, ifevent->bssidx, ifevent->ifidx, - is_p2pdev, emsg->ifname, emsg->addr); - if (IS_ERR(ifp)) - return; - if (!is_p2pdev) - brcmf_fws_add_interface(ifp); - if (!drvr->fweh.evt_handler[BRCMF_E_IF]) - if (brcmf_net_attach(ifp, false) < 0) - return; - } - - if (ifp && ifevent->action == BRCMF_E_IF_CHANGE) - brcmf_fws_reset_interface(ifp); - - err = brcmf_fweh_call_event_handler(ifp, emsg->event_code, emsg, data); - - if (ifp && ifevent->action == BRCMF_E_IF_DEL) - brcmf_remove_interface(ifp); -} - -/** - * brcmf_fweh_dequeue_event() - get event from the queue. - * - * @fweh: firmware event handling info. - */ -static struct brcmf_fweh_queue_item * -brcmf_fweh_dequeue_event(struct brcmf_fweh_info *fweh) -{ - struct brcmf_fweh_queue_item *event = NULL; - ulong flags; - - spin_lock_irqsave(&fweh->evt_q_lock, flags); - if (!list_empty(&fweh->event_q)) { - event = list_first_entry(&fweh->event_q, - struct brcmf_fweh_queue_item, q); - list_del(&event->q); - } - spin_unlock_irqrestore(&fweh->evt_q_lock, flags); - - return event; -} - -/** - * brcmf_fweh_event_worker() - firmware event worker. - * - * @work: worker object. - */ -static void brcmf_fweh_event_worker(struct work_struct *work) -{ - struct brcmf_pub *drvr; - struct brcmf_if *ifp; - struct brcmf_fweh_info *fweh; - struct brcmf_fweh_queue_item *event; - int err = 0; - struct brcmf_event_msg_be *emsg_be; - struct brcmf_event_msg emsg; - - fweh = container_of(work, struct brcmf_fweh_info, event_work); - drvr = container_of(fweh, struct brcmf_pub, fweh); - - while ((event = brcmf_fweh_dequeue_event(fweh))) { - brcmf_dbg(EVENT, "event %s (%u) ifidx %u bsscfg %u addr %pM\n", - brcmf_fweh_event_name(event->code), event->code, - event->emsg.ifidx, event->emsg.bsscfgidx, - event->emsg.addr); - - /* convert event message */ - emsg_be = &event->emsg; - emsg.version = be16_to_cpu(emsg_be->version); - emsg.flags = be16_to_cpu(emsg_be->flags); - emsg.event_code = event->code; - emsg.status = be32_to_cpu(emsg_be->status); - emsg.reason = be32_to_cpu(emsg_be->reason); - emsg.auth_type = be32_to_cpu(emsg_be->auth_type); - emsg.datalen = be32_to_cpu(emsg_be->datalen); - memcpy(emsg.addr, emsg_be->addr, ETH_ALEN); - memcpy(emsg.ifname, emsg_be->ifname, sizeof(emsg.ifname)); - emsg.ifidx = emsg_be->ifidx; - emsg.bsscfgidx = emsg_be->bsscfgidx; - - brcmf_dbg(EVENT, " version %u flags %u status %u reason %u\n", - emsg.version, emsg.flags, emsg.status, emsg.reason); - brcmf_dbg_hex_dump(BRCMF_EVENT_ON(), event->data, - min_t(u32, emsg.datalen, 64), - "event payload, len=%d\n", emsg.datalen); - - /* special handling of interface event */ - if (event->code == BRCMF_E_IF) { - brcmf_fweh_handle_if_event(drvr, &emsg, event->data); - goto event_free; - } - - if (event->code == BRCMF_E_TDLS_PEER_EVENT) - ifp = drvr->iflist[0]; - else - ifp = drvr->iflist[emsg.bsscfgidx]; - err = brcmf_fweh_call_event_handler(ifp, event->code, &emsg, - event->data); - if (err) { - brcmf_err("event handler failed (%d)\n", - event->code); - err = 0; - } -event_free: - kfree(event); - } -} - -/** - * brcmf_fweh_p2pdev_setup() - P2P device setup ongoing (or not). - * - * @ifp: ifp on which setup is taking place or finished. - * @ongoing: p2p device setup in progress (or not). - */ -void brcmf_fweh_p2pdev_setup(struct brcmf_if *ifp, bool ongoing) -{ - ifp->drvr->fweh.p2pdev_setup_ongoing = ongoing; -} - -/** - * brcmf_fweh_attach() - initialize firmware event handling. - * - * @drvr: driver information object. - */ -void brcmf_fweh_attach(struct brcmf_pub *drvr) -{ - struct brcmf_fweh_info *fweh = &drvr->fweh; - INIT_WORK(&fweh->event_work, brcmf_fweh_event_worker); - spin_lock_init(&fweh->evt_q_lock); - INIT_LIST_HEAD(&fweh->event_q); -} - -/** - * brcmf_fweh_detach() - cleanup firmware event handling. - * - * @drvr: driver information object. - */ -void brcmf_fweh_detach(struct brcmf_pub *drvr) -{ - struct brcmf_fweh_info *fweh = &drvr->fweh; - struct brcmf_if *ifp = brcmf_get_ifp(drvr, 0); - s8 eventmask[BRCMF_EVENTING_MASK_LEN]; - - if (ifp) { - /* clear all events */ - memset(eventmask, 0, BRCMF_EVENTING_MASK_LEN); - (void)brcmf_fil_iovar_data_set(ifp, "event_msgs", - eventmask, - BRCMF_EVENTING_MASK_LEN); - } - /* cancel the worker */ - cancel_work_sync(&fweh->event_work); - WARN_ON(!list_empty(&fweh->event_q)); - memset(fweh->evt_handler, 0, sizeof(fweh->evt_handler)); -} - -/** - * brcmf_fweh_register() - register handler for given event code. - * - * @drvr: driver information object. - * @code: event code. - * @handler: handler for the given event code. - */ -int brcmf_fweh_register(struct brcmf_pub *drvr, enum brcmf_fweh_event_code code, - brcmf_fweh_handler_t handler) -{ - if (drvr->fweh.evt_handler[code]) { - brcmf_err("event code %d already registered\n", code); - return -ENOSPC; - } - drvr->fweh.evt_handler[code] = handler; - brcmf_dbg(TRACE, "event handler registered for %s\n", - brcmf_fweh_event_name(code)); - return 0; -} - -/** - * brcmf_fweh_unregister() - remove handler for given code. - * - * @drvr: driver information object. - * @code: event code. - */ -void brcmf_fweh_unregister(struct brcmf_pub *drvr, - enum brcmf_fweh_event_code code) -{ - brcmf_dbg(TRACE, "event handler cleared for %s\n", - brcmf_fweh_event_name(code)); - drvr->fweh.evt_handler[code] = NULL; -} - -/** - * brcmf_fweh_activate_events() - enables firmware events registered. - * - * @ifp: primary interface object. - */ -int brcmf_fweh_activate_events(struct brcmf_if *ifp) -{ - int i, err; - s8 eventmask[BRCMF_EVENTING_MASK_LEN]; - - for (i = 0; i < BRCMF_E_LAST; i++) { - if (ifp->drvr->fweh.evt_handler[i]) { - brcmf_dbg(EVENT, "enable event %s\n", - brcmf_fweh_event_name(i)); - setbit(eventmask, i); - } - } - - /* want to handle IF event as well */ - brcmf_dbg(EVENT, "enable event IF\n"); - setbit(eventmask, BRCMF_E_IF); - - err = brcmf_fil_iovar_data_set(ifp, "event_msgs", - eventmask, BRCMF_EVENTING_MASK_LEN); - if (err) - brcmf_err("Set event_msgs error (%d)\n", err); - - return err; -} - -/** - * brcmf_fweh_process_event() - process skb as firmware event. - * - * @drvr: driver information object. - * @event_packet: event packet to process. - * - * If the packet buffer contains a firmware event message it will - * dispatch the event to a registered handler (using worker). - */ -void brcmf_fweh_process_event(struct brcmf_pub *drvr, - struct brcmf_event *event_packet) -{ - enum brcmf_fweh_event_code code; - struct brcmf_fweh_info *fweh = &drvr->fweh; - struct brcmf_fweh_queue_item *event; - gfp_t alloc_flag = GFP_KERNEL; - void *data; - u32 datalen; - - /* get event info */ - code = get_unaligned_be32(&event_packet->msg.event_type); - datalen = get_unaligned_be32(&event_packet->msg.datalen); - data = &event_packet[1]; - - if (code >= BRCMF_E_LAST) - return; - - if (code != BRCMF_E_IF && !fweh->evt_handler[code]) - return; - - if (in_interrupt()) - alloc_flag = GFP_ATOMIC; - - event = kzalloc(sizeof(*event) + datalen, alloc_flag); - if (!event) - return; - - event->code = code; - event->ifidx = event_packet->msg.ifidx; - - /* use memcpy to get aligned event message */ - memcpy(&event->emsg, &event_packet->msg, sizeof(event->emsg)); - memcpy(event->data, data, datalen); - memcpy(event->ifaddr, event_packet->eth.h_dest, ETH_ALEN); - - brcmf_fweh_queue_event(fweh, event); -} |