diff options
Diffstat (limited to 'drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c')
| -rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c | 238 |
1 files changed, 150 insertions, 88 deletions
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c index 4eb1e1ce9ace..c2d98ee6652f 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c @@ -1,17 +1,6 @@ +// SPDX-License-Identifier: ISC /* * 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> @@ -25,7 +14,8 @@ #include "fweh.h" #include "fwil.h" #include "proto.h" - +#include "bus.h" +#include "fwvid.h" /** * struct brcmf_fweh_queue_item - event item on event queue. * @@ -34,19 +24,20 @@ * @ifidx: interface index related to this event. * @ifaddr: ethernet address for interface. * @emsg: common parameters of the firmware event message. + * @datalen: length of the data array * @data: event specific data part of the firmware event. */ struct brcmf_fweh_queue_item { struct list_head q; - enum brcmf_fweh_event_code code; + u32 code; u8 ifidx; u8 ifaddr[ETH_ALEN]; struct brcmf_event_msg_be emsg; u32 datalen; - u8 data[0]; + u8 data[] __counted_by(datalen); }; -/** +/* * struct brcmf_fweh_event_name - code, name mapping entry. */ struct brcmf_fweh_event_name { @@ -84,6 +75,7 @@ const char *brcmf_fweh_event_name(enum brcmf_fweh_event_code code) return "nodebug"; } #endif +BRCMF_EXPORT_SYMBOL_GPL(brcmf_fweh_event_name); /** * brcmf_fweh_queue_event() - create and queue event. @@ -102,8 +94,9 @@ static void brcmf_fweh_queue_event(struct brcmf_fweh_info *fweh, schedule_work(&fweh->event_work); } -static int brcmf_fweh_call_event_handler(struct brcmf_if *ifp, - enum brcmf_fweh_event_code code, +static int brcmf_fweh_call_event_handler(struct brcmf_pub *drvr, + struct brcmf_if *ifp, + u32 fwcode, struct brcmf_event_msg *emsg, void *data) { @@ -111,15 +104,15 @@ static int brcmf_fweh_call_event_handler(struct brcmf_if *ifp, int err = -EINVAL; if (ifp) { - fweh = &ifp->drvr->fweh; + 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); + if (fweh->evt_handler[fwcode]) + err = fweh->evt_handler[fwcode](ifp, emsg, data); else - brcmf_err("unhandled event %d ignored\n", code); + bphy_err(drvr, "unhandled fwevt %d ignored\n", fwcode); } else { - brcmf_err("no interface object\n"); + bphy_err(drvr, "no interface object\n"); } return err; } @@ -128,8 +121,8 @@ static int brcmf_fweh_call_event_handler(struct brcmf_if *ifp, * brcmf_fweh_handle_if_event() - handle IF event. * * @drvr: driver information object. - * @item: queue entry. - * @ifpp: interface object (may change upon ADD action). + * @emsg: event message object. + * @data: event object. */ static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr, struct brcmf_event_msg *emsg, @@ -138,7 +131,6 @@ static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr, struct brcmf_if_event *ifevent = data; struct brcmf_if *ifp; bool is_p2pdev; - int err = 0; brcmf_dbg(EVENT, "action: %u ifidx: %u bsscfgidx: %u flags: %u role: %u\n", ifevent->action, ifevent->ifidx, ifevent->bsscfgidx, @@ -152,13 +144,13 @@ static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr, 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)))); + (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); + bphy_err(drvr, "invalid interface index: %u\n", ifevent->ifidx); return; } @@ -173,7 +165,7 @@ static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr, return; if (!is_p2pdev) brcmf_proto_add_if(drvr, ifp); - if (!drvr->fweh.evt_handler[BRCMF_E_IF]) + if (!drvr->fweh->evt_handler[BRCMF_E_IF]) if (brcmf_net_attach(ifp, false) < 0) return; } @@ -181,7 +173,8 @@ static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr, if (ifp && ifevent->action == BRCMF_E_IF_CHANGE) brcmf_proto_reset_if(drvr, ifp); - err = brcmf_fweh_call_event_handler(ifp, emsg->event_code, emsg, data); + brcmf_fweh_call_event_handler(drvr, ifp, emsg->event_code, emsg, + data); if (ifp && ifevent->action == BRCMF_E_IF_DEL) { bool armed = brcmf_cfg80211_vif_event_armed(drvr->config); @@ -192,6 +185,45 @@ static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr, } } +static void brcmf_fweh_map_event_code(struct brcmf_fweh_info *fweh, + enum brcmf_fweh_event_code code, + u32 *fw_code) +{ + int i; + + if (WARN_ON(!fw_code)) + return; + + *fw_code = code; + if (fweh->event_map) { + for (i = 0; i < fweh->event_map->n_items; i++) { + if (fweh->event_map->items[i].code == code) { + *fw_code = fweh->event_map->items[i].fwevt_code; + break; + } + } + } +} + +static void brcmf_fweh_map_fwevt_code(struct brcmf_fweh_info *fweh, u32 fw_code, + enum brcmf_fweh_event_code *code) +{ + int i; + + if (WARN_ON(!code)) + return; + + *code = fw_code; + if (fweh->event_map) { + for (i = 0; i < fweh->event_map->n_items; i++) { + if (fweh->event_map->items[i].fwevt_code == fw_code) { + *code = fweh->event_map->items[i].code; + break; + } + } + } +} + /** * brcmf_fweh_dequeue_event() - get event from the queue. * @@ -230,19 +262,27 @@ static void brcmf_fweh_event_worker(struct work_struct *work) struct brcmf_event_msg emsg; fweh = container_of(work, struct brcmf_fweh_info, event_work); - drvr = container_of(fweh, struct brcmf_pub, fweh); + drvr = fweh->drvr; 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, + enum brcmf_fweh_event_code code; + + brcmf_fweh_map_fwevt_code(fweh, event->code, &code); + brcmf_dbg(EVENT, "event %s (%u:%u) ifidx %u bsscfg %u addr %pM\n", + brcmf_fweh_event_name(code), code, event->code, event->emsg.ifidx, event->emsg.bsscfgidx, event->emsg.addr); + if (event->emsg.bsscfgidx >= BRCMF_MAX_IFS) { + bphy_err(drvr, "invalid bsscfg index: %u\n", + event->emsg.bsscfgidx); + goto event_free; + } /* 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.event_code = 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); @@ -257,11 +297,6 @@ static void brcmf_fweh_event_worker(struct work_struct *work) brcmf_dbg_hex_dump(BRCMF_EVENT_ON(), event->data, min_t(u32, emsg.datalen, 64), "event payload, len=%d\n", emsg.datalen); - if (emsg.datalen > event->datalen) { - brcmf_err("event invalid length header=%d, msg=%d\n", - event->datalen, emsg.datalen); - goto event_free; - } /* special handling of interface event */ if (event->code == BRCMF_E_IF) { @@ -273,11 +308,11 @@ static void brcmf_fweh_event_worker(struct work_struct *work) ifp = drvr->iflist[0]; else ifp = drvr->iflist[emsg.bsscfgidx]; - err = brcmf_fweh_call_event_handler(ifp, event->code, &emsg, - event->data); + err = brcmf_fweh_call_event_handler(drvr, ifp, event->code, + &emsg, event->data); if (err) { - brcmf_err("event handler failed (%d)\n", - event->code); + bphy_err(drvr, "event handler failed (%d)\n", + event->code); err = 0; } event_free: @@ -293,7 +328,7 @@ event_free: */ void brcmf_fweh_p2pdev_setup(struct brcmf_if *ifp, bool ongoing) { - ifp->drvr->fweh.p2pdev_setup_ongoing = ongoing; + ifp->drvr->fweh->p2pdev_setup_ongoing = ongoing; } /** @@ -301,12 +336,27 @@ void brcmf_fweh_p2pdev_setup(struct brcmf_if *ifp, bool ongoing) * * @drvr: driver information object. */ -void brcmf_fweh_attach(struct brcmf_pub *drvr) +int brcmf_fweh_attach(struct brcmf_pub *drvr) { - struct brcmf_fweh_info *fweh = &drvr->fweh; + struct brcmf_fweh_info *fweh; + int err; + + err = brcmf_fwvid_alloc_fweh_info(drvr); + if (err < 0) + return err; + + fweh = drvr->fweh; + fweh->drvr = drvr; + + fweh->event_mask_len = DIV_ROUND_UP(fweh->num_event_codes, 8); + fweh->event_mask = kzalloc(fweh->event_mask_len, GFP_KERNEL); + if (!fweh->event_mask) + return -ENOMEM; + INIT_WORK(&fweh->event_work, brcmf_fweh_event_worker); spin_lock_init(&fweh->evt_q_lock); INIT_LIST_HEAD(&fweh->event_q); + return 0; } /** @@ -316,21 +366,19 @@ void brcmf_fweh_attach(struct brcmf_pub *drvr) */ 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]; + struct brcmf_fweh_info *fweh = drvr->fweh; - 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); + if (!fweh) + return; + + /* cancel the worker if initialized */ + if (fweh->event_work.func) { + cancel_work_sync(&fweh->event_work); + WARN_ON(!list_empty(&fweh->event_q)); } - /* 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)); + drvr->fweh = NULL; + kfree(fweh->event_mask); + kfree(fweh); } /** @@ -343,15 +391,22 @@ void brcmf_fweh_detach(struct brcmf_pub *drvr) 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); + struct brcmf_fweh_info *fweh = drvr->fweh; + u32 evt_handler_idx; + + brcmf_fweh_map_event_code(fweh, code, &evt_handler_idx); + + if (fweh->evt_handler[evt_handler_idx]) { + bphy_err(drvr, "event code %d already registered\n", code); return -ENOSPC; } - drvr->fweh.evt_handler[code] = handler; + + fweh->evt_handler[evt_handler_idx] = handler; brcmf_dbg(TRACE, "event handler registered for %s\n", brcmf_fweh_event_name(code)); return 0; } +BRCMF_EXPORT_SYMBOL_GPL(brcmf_fweh_register); /** * brcmf_fweh_unregister() - remove handler for given code. @@ -362,9 +417,12 @@ int brcmf_fweh_register(struct brcmf_pub *drvr, enum brcmf_fweh_event_code code, void brcmf_fweh_unregister(struct brcmf_pub *drvr, enum brcmf_fweh_event_code code) { + u32 evt_handler_idx; + brcmf_dbg(TRACE, "event handler cleared for %s\n", brcmf_fweh_event_name(code)); - drvr->fweh.evt_handler[code] = NULL; + brcmf_fweh_map_event_code(drvr->fweh, code, &evt_handler_idx); + drvr->fweh->evt_handler[evt_handler_idx] = NULL; } /** @@ -374,27 +432,32 @@ void brcmf_fweh_unregister(struct brcmf_pub *drvr, */ int brcmf_fweh_activate_events(struct brcmf_if *ifp) { + struct brcmf_fweh_info *fweh = ifp->drvr->fweh; + enum brcmf_fweh_event_code code; int i, err; - s8 eventmask[BRCMF_EVENTING_MASK_LEN]; - memset(eventmask, 0, sizeof(eventmask)); - for (i = 0; i < BRCMF_E_LAST; i++) { - if (ifp->drvr->fweh.evt_handler[i]) { + memset(fweh->event_mask, 0, fweh->event_mask_len); + for (i = 0; i < fweh->num_event_codes; i++) { + if (fweh->evt_handler[i]) { + brcmf_fweh_map_fwevt_code(fweh, i, &code); brcmf_dbg(EVENT, "enable event %s\n", - brcmf_fweh_event_name(i)); - setbit(eventmask, i); + brcmf_fweh_event_name(code)); + setbit(fweh->event_mask, i); } } /* want to handle IF event as well */ brcmf_dbg(EVENT, "enable event IF\n"); - setbit(eventmask, BRCMF_E_IF); + setbit(fweh->event_mask, 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); + /* allow per-vendor method to activate firmware events */ + if (!brcmf_fwvid_activate_events(ifp)) + return 0; + err = brcmf_fil_iovar_data_set(ifp, "event_msgs", fweh->event_mask, + fweh->event_mask_len); + if (err) + bphy_err(fweh->drvr, "Set event_msgs error (%d)\n", err); return err; } @@ -403,49 +466,48 @@ int brcmf_fweh_activate_events(struct brcmf_if *ifp) * * @drvr: driver information object. * @event_packet: event packet to process. + * @packet_len: length of the packet + * @gfp: memory allocation flags. * * 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, - u32 packet_len) + u32 packet_len, gfp_t gfp) { - enum brcmf_fweh_event_code code; - struct brcmf_fweh_info *fweh = &drvr->fweh; + u32 fwevt_idx; + 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); + fwevt_idx = 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) + if (fwevt_idx >= fweh->num_event_codes) return; - if (code != BRCMF_E_IF && !fweh->evt_handler[code]) + if (fwevt_idx != BRCMF_E_IF && !fweh->evt_handler[fwevt_idx]) return; - if (datalen > BRCMF_DCMD_MAXLEN) + if (datalen > BRCMF_DCMD_MAXLEN || + datalen + sizeof(*event_packet) > packet_len) return; - if (in_interrupt()) - alloc_flag = GFP_ATOMIC; - - event = kzalloc(sizeof(*event) + datalen, alloc_flag); + event = kzalloc(struct_size(event, data, datalen), gfp); if (!event) return; - event->code = code; + event->code = fwevt_idx; + event->datalen = datalen; 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); - event->datalen = datalen; memcpy(event->ifaddr, event_packet->eth.h_dest, ETH_ALEN); brcmf_fweh_queue_event(fweh, event); |