/* * Copyright (c) 2012-2014 Qualcomm Atheros, Inc. * * 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 "wil6210.h" #include "txrx.h" #include "wmi.h" #include "trace.h" static uint max_assoc_sta = WIL6210_MAX_CID; module_param(max_assoc_sta, uint, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(max_assoc_sta, " Max number of stations associated to the AP"); int agg_wsize; /* = 0; */ module_param(agg_wsize, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(agg_wsize, " Window size for Tx Block Ack after connect;" " 0 - use default; < 0 - don't auto-establish"); /** * WMI event receiving - theory of operations * * When firmware about to report WMI event, it fills memory area * in the mailbox and raises misc. IRQ. Thread interrupt handler invoked for * the misc IRQ, function @wmi_recv_cmd called by thread IRQ handler. * * @wmi_recv_cmd reads event, allocates memory chunk and attaches it to the * event list @wil->pending_wmi_ev. Then, work queue @wil->wmi_wq wakes up * and handles events within the @wmi_event_worker. Every event get detached * from list, processed and deleted. * * Purpose for this mechanism is to release IRQ thread; otherwise, * if WMI event handling involves another WMI command flow, this 2-nd flow * won't be completed because of blocked IRQ thread. */ /** * Addressing - theory of operations * * There are several buses present on the WIL6210 card. * Same memory areas are visible at different address on * the different busses. There are 3 main bus masters: * - MAC CPU (ucode) * - User CPU (firmware) * - AHB (host) * * On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing * AHB addresses starting from 0x880000 * * Internally, firmware uses addresses that allows faster access but * are invisible from the host. To read from these addresses, alternative * AHB address must be used. * * Memory mapping * Linker address PCI/Host address * 0x880000 .. 0xa80000 2Mb BAR0 * 0x800000 .. 0x807000 0x900000 .. 0x907000 28k DCCM * 0x840000 .. 0x857000 0x908000 .. 0x91f000 92k PERIPH */ /** * @fw_mapping provides memory remapping table * * array size should be in sync with the declaration in the wil6210.h */ const struct fw_map fw_mapping[] = { {0x000000, 0x040000, 0x8c0000, "fw_code"}, /* FW code RAM 256k */ {0x800000, 0x808000, 0x900000, "fw_data"}, /* FW data RAM 32k */ {0x840000, 0x860000, 0x908000, "fw_peri"}, /* periph. data RAM 128k */ {0x880000, 0x88a000, 0x880000, "rgf"}, /* various RGF 40k */ {0x88a000, 0x88b000, 0x88a000, "AGC_tbl"}, /* AGC table 4k */ {0x88b000, 0x88c000, 0x88b000, "rgf_ext"}, /* Pcie_ext_rgf 4k */ {0x8c0000, 0x949000, 0x8c0000, "upper"}, /* upper area 548k */ /* * 920000..930000 ucode code RAM * 930000..932000 ucode data RAM * 932000..949000 back-door debug data */ }; /** * return AHB address for given firmware/ucode internal (linker) address * @x - internal address * If address have no valid AHB mapping, return 0 */ static u32 wmi_addr_remap(u32 x) { uint i; for (i = 0; i < ARRAY_SIZE(fw_mapping); i++) { if ((x >= fw_mapping[i].from) && (x < fw_mapping[i].to)) return x + fw_mapping[i].host - fw_mapping[i].from; } return 0; } /** * Check address validity for WMI buffer; remap if needed * @ptr - internal (linker) fw/ucode address * * Valid buffer should be DWORD aligned * * return address for accessing buffer from the host; * if buffer is not valid, return NULL. */ void __iomem *wmi_buffer(struct wil6210_priv *wil, __le32 ptr_) { u32 off; u32 ptr = le32_to_cpu(ptr_); if (ptr % 4) return NULL; ptr = wmi_addr_remap(ptr); if (ptr < WIL6210_FW_HOST_OFF) return NULL; off = HOSTADDR(ptr); if (off > WIL6210_MEM_SIZE - 4) return NULL; return wil->csr + off; } /** * Check address validity */ void __iomem *wmi_addr(struct wil6210_priv *wil, u32 ptr) { u32 off; if (ptr % 4) return NULL; if (ptr < WIL6210_FW_HOST_OFF) return NULL; off = HOSTADDR(ptr); if (off > WIL6210_MEM_SIZE - 4) return NULL; return wil->csr + off; } int wmi_read_hdr(struct wil6210_priv *wil, __le32 ptr, struct wil6210_mbox_hdr *hdr) { void __iomem *src = wmi_buffer(wil, ptr); if (!src) return -EINVAL; wil_memcpy_fromio_32(hdr, src, sizeof(*hdr)); return 0; } static int __wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len) { struct { struct wil6210_mbox_hdr hdr; struct wil6210_mbox_hdr_wmi wmi; } __packed cmd = { .hdr = { .type = WIL_MBOX_HDR_TYPE_WMI, .flags = 0, .len = cpu_to_le16(sizeof(cmd.wmi) + len), }, .wmi = { .mid = 0, .id = cpu_to_le16(cmdid), }, }; struct wil6210_mbox_ring *r = &wil->mbox_ctl.tx; struct wil6210_mbox_ring_desc d_head; u32 next_head; void __iomem *dst; void __iomem *head = wmi_addr(wil, r->head); uint retry; if (sizeof(cmd) + len > r->entry_size) { wil_err(wil, "WMI size too large: %d bytes, max is %d\n", (int)(sizeof(cmd) + len), r->entry_size); return -ERANGE; } might_sleep(); if (!test_bit(wil_status_fwready, wil->status)) { wil_err(wil, "WMI: cannot send command while FW not ready\n"); return -EAGAIN; } if (!head) { wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head); return -EINVAL; } /* read Tx head till it is not busy */ for (retry = 5; retry > 0; retry--) { wil_memcpy_fromio_32(&d_head, head, sizeof(d_head)); if (d_head.sync == 0) break; msleep(20); } if (d_head.sync != 0) { wil_err(wil, "WMI head busy\n"); return -EBUSY; } /* next head */ next_head = r->base + ((r->head - r->base + sizeof(d_head)) % r->size); wil_dbg_wmi(wil, "Head 0x%08x -> 0x%08x\n", r->head, next_head); /* wait till FW finish with previous command */ for (retry = 5; retry > 0; retry--) { r->tail = ioread32(wil->csr + HOST_MBOX + offsetof(struct wil6210_mbox_ctl, tx.tail)); if (next_head != r->tail) break; msleep(20); } if (next_head == r->tail) { wil_err(wil, "WMI ring full\n"); return -EBUSY; } dst = wmi_buffer(wil, d_head.addr); if (!dst) { wil_err(wil, "invalid WMI buffer: 0x%08x\n", le32_to_cpu(d_head.addr)); return -EINVAL; } cmd.hdr.seq = cpu_to_le16(++wil->wmi_seq); /* set command */ wil_dbg_wmi(wil, "WMI command 0x%04x [%d]\n", cmdid, len); wil_hex_dump_wmi("Cmd ", DUMP_PREFIX_OFFSET, 16, 1, &cmd, sizeof(cmd), true); wil_hex_dump_wmi("cmd ", DUMP_PREFIX_OFFSET, 16, 1, buf, len, true); wil_memcpy_toio_32(dst, &cmd, sizeof(cmd)); wil_memcpy_toio_32(dst + sizeof(cmd), buf, len); /* mark entry as full */ iowrite32(1, wil->csr + HOSTADDR(r->head) + offsetof(struct wil6210_mbox_ring_desc, sync)); /* advance next ptr */ iowrite32(r->head = next_head, wil->csr + HOST_MBOX + offsetof(struct wil6210_mbox_ctl, tx.head)); trace_wil6210_wmi_cmd(&cmd.wmi, buf, len); /* interrupt to FW */ iowrite32(SW_INT_MBOX, wil->csr + HOST_SW_INT); return 0; } int wmi_send(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len) { int rc; mutex_lock(&wil->wmi_mutex); rc = __wmi_send(wil, cmdid, buf, len); mutex_unlock(&wil->wmi_mutex); return rc; } /*=== Event handlers ===*/ static void wmi_evt_ready(struct wil6210_priv *wil, int id, void *d, int len) { struct wireless_dev *wdev = wil->wdev; struct wmi_ready_event *evt = d; wil->fw_version = le32_to_cpu(evt->sw_version); wil->n_mids = evt->numof_additional_mids; wil_info(wil, "FW ver. %d; MAC %pM; %d MID's\n", wil->fw_version, evt->mac, wil->n_mids); /* ignore MAC address, we already have it from the boot loader */ snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version), "%d", wil->fw_version); } static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d, int len) { wil_dbg_wmi(wil, "WMI: got FW ready event\n"); wil_set_recovery_state(wil, fw_recovery_idle); set_bit(wil_status_fwready, wil->status); /* let the reset sequence continue */ complete(&wil->wmi_ready); } static void wmi_evt_rx_mgmt(struct wil6210_priv *wil, int id, void *d, int len) { struct wmi_rx_mgmt_packet_event *data = d; struct wiphy *wiphy = wil_to_wiphy(wil); struct ieee80211_mgmt *rx_mgmt_frame = (struct ieee80211_mgmt *)data->payload; int ch_no = data->info.channel+1; u32 freq = ieee80211_channel_to_frequency(ch_no, IEEE80211_BAND_60GHZ); struct ieee80211_channel *channel = ieee80211_get_channel(wiphy, freq); s32 signal = data->info.sqi; __le16 fc = rx_mgmt_frame->frame_control; u32 d_len = le32_to_cpu(data->info.len); u16 d_status = le16_to_cpu(data->info.status); wil_dbg_wmi(wil, "MGMT: channel %d MCS %d SNR %d SQI %d%%\n", data->info.channel, data->info.mcs, data->info.snr, data->info.sqi); wil_dbg_wmi(wil, "status 0x%04x len %d fc 0x%04x\n", d_status, d_len, le16_to_cpu(fc)); wil_dbg_wmi(wil, "qid %d mid %d cid %d\n", data->info.qid, data->info.mid, data->info.cid); if (!channel) { wil_err(wil, "Frame on unsupported channel\n"); return; } if (ieee80211_is_beacon(fc) || ieee80211_is_probe_resp(fc)) { struct cfg80211_bss *bss; u64 tsf = le64_to_cpu(rx_mgmt_frame->u.beacon.timestamp); u16 cap = le16_to_cpu(rx_mgmt_frame->u.beacon.capab_info); u16 bi = le16_to_cpu(rx_mgmt_frame->u.beacon.beacon_int); const u8 *ie_buf = rx_mgmt_frame->u.beacon.variable; size_t ie_len = d_len - offsetof(struct ieee80211_mgmt, u.beacon.variable); wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap); wil_dbg_wmi(wil, "TSF : 0x%016llx\n", tsf); wil_dbg_wmi(wil, "Beacon interval : %d\n", bi); wil_hex_dump_wmi("IE ", DUMP_PREFIX_OFFSET, 16, 1, ie_buf, ie_len, true); bss = cfg80211_inform_bss_frame(wiphy, channel, rx_mgmt_frame, d_len, signal, GFP_KERNEL); if (bss) { wil_dbg_wmi(wil, "Added BSS %pM\n", rx_mgmt_frame->bssid); cfg80211_put_bss(wiphy, bss); } else { wil_err(wil, "cfg80211_inform_bss_frame() failed\n"); } } else { cfg80211_rx_mgmt(wil->wdev, freq, signal, (void *)rx_mgmt_frame, d_len, 0); } } static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id, void *d, int len) { if (wil->scan_request) { struct wmi_scan_complete_event *data = d; bool aborted = (data->status != WMI_SCAN_SUCCESS); wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", data->status); wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n", wil->scan_request, aborted); del_timer_sync(&wil->scan_timer); cfg80211_scan_done(wil->scan_request, aborted); wil->scan_request = NULL; } else { wil_err(wil, "SCAN_COMPLETE while not scanning\n"); } } static void wmi_evt_connect(struct wil6210_priv *wil, int id, void *d, int len) { struct net_device *ndev = wil_to_ndev(wil); struct wireless_dev *wdev = wil->wdev; struct wmi_connect_event *evt = d; int ch; /* channel number */ struct station_info sinfo; u8 *assoc_req_ie, *assoc_resp_ie; size_t assoc_req_ielen, assoc_resp_ielen; /* capinfo(u16) + listen_interval(u16) + IEs */ const size_t assoc_req_ie_offset = sizeof(u16) * 2; /* capinfo(u16) + status_code(u16) + associd(u16) + IEs */ const size_t assoc_resp_ie_offset = sizeof(u16) * 3; if (len < sizeof(*evt)) { wil_err(wil, "Connect event too short : %d bytes\n", len); return; } if (len != sizeof(*evt) + evt->beacon_ie_len + evt->assoc_req_len + evt->assoc_resp_len) { wil_err(wil, "Connect event corrupted : %d != %d + %d + %d + %d\n", len, (int)sizeof(*evt), evt->beacon_ie_len, evt->assoc_req_len, evt->assoc_resp_len); return; } if (evt->cid >= WIL6210_MAX_CID) { wil_err(wil, "Connect CID invalid : %d\n", evt->cid); return; } ch = evt->channel + 1; wil_dbg_wmi(wil, "Connect %pM channel [%d] cid %d\n", evt->bssid, ch, evt->cid); wil_hex_dump_wmi("connect AI : ", DUMP_PREFIX_OFFSET, 16, 1, evt->assoc_info, len - sizeof(*evt), true); /* figure out IE's */ assoc_req_ie = &evt->assoc_info[evt->beacon_ie_len + assoc_req_ie_offset]; assoc_req_ielen = evt->assoc_req_len - assoc_req_ie_offset; if (evt->assoc_req_len <= assoc_req_ie_offset) { assoc_req_ie = NULL; assoc_req_ielen = 0; } assoc_resp_ie = &evt->assoc_info[evt->beacon_ie_len + evt->assoc_req_len + assoc_resp_ie_offset]; assoc_resp_ielen = evt->assoc_resp_len - assoc_resp_ie_offset; if (evt->assoc_resp_len <= assoc_resp_ie_offset) { assoc_resp_ie = NULL; assoc_resp_ielen = 0; } if ((wdev->iftype == NL80211_IFTYPE_STATION) || (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) { if (!test_bit(wil_status_fwconnecting, wil->status)) { wil_err(wil, "Not in connecting state\n"); return; } del_timer_sync(&wil->connect_timer); cfg80211_connect_result(ndev, evt->bssid, assoc_req_ie, assoc_req_ielen, assoc_resp_ie, assoc_resp_ielen, WLAN_STATUS_SUCCESS, GFP_KERNEL); } else if ((wdev->iftype == NL80211_IFTYPE_AP) || (wdev->iftype == NL80211_IFTYPE_P2P_GO)) { memset(&sinfo, 0, sizeof(sinfo)); sinfo.generation = wil->sinfo_gen++; if (assoc_req_ie) { sinfo.assoc_req_ies = assoc_req_ie; sinfo.assoc_req_ies_len = assoc_req_ielen; } cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL); } clear_bit(wil_status_fwconnecting, wil->status); set_bit(wil_status_fwconnected, wil->status); /* FIXME FW can transmit only ucast frames to peer */ /* FIXME real ring_id instead of hard coded 0 */ memcpy(wil->sta[evt->cid].addr, evt->bssid, ETH_ALEN); wil->sta[evt->cid].status = wil_sta_conn_pending; wil->pending_connect_cid = evt->cid; queue_work(wil->wq_service, &wil->connect_worker); } static void wmi_evt_disconnect(struct wil6210_priv *wil, int id, void *d, int len) { struct wmi_disconnect_event *evt = d; u16 reason_code = le16_to_cpu(evt->protocol_reason_status); wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n", evt->bssid, reason_code, evt->disconnect_reason); wil->sinfo_gen++; mutex_lock(&wil->mutex); wil6210_disconnect(wil, evt->bssid, reason_code, true); mutex_unlock(&wil->mutex); } /* * Firmware reports EAPOL frame using WME event. * Reconstruct Ethernet frame and deliver it via normal Rx */ static void wmi_evt_eapol_rx(struct wil6210_priv *wil, int id, void *d, int len) { struct net_device *ndev = wil_to_ndev(wil); struct wmi_eapol_rx_event *evt = d; u16 eapol_len = le16_to_cpu(evt->eapol_len); int sz = eapol_len + ETH_HLEN; struct sk_buff *skb; struct ethhdr *eth; int cid; struct wil_net_stats *stats = NULL; wil_dbg_wmi(wil, "EAPOL len %d from %pM\n", eapol_len, evt->src_mac); cid = wil_find_cid(wil, evt->src_mac); if (cid >= 0) stats = &wil->sta[cid].stats; if (eapol_len > 196) { /* TODO: revisit size limit */ wil_err(wil, "EAPOL too large\n"); return; } skb = alloc_skb(sz, GFP_KERNEL); if (!skb) { wil_err(wil, "Failed to allocate skb\n"); return; } eth = (struct ethhdr *)skb_put(skb, ETH_HLEN); memcpy(eth->h_dest, ndev->dev_addr, ETH_ALEN); memcpy(eth->h_source, evt->src_mac, ETH_ALEN); eth->h_proto = cpu_to_be16(ETH_P_PAE); memcpy(skb_put(skb, eapol_len), evt->eapol, eapol_len); skb->protocol = eth_type_trans(skb, ndev); if (likely(netif_rx_ni(skb) == NET_RX_SUCCESS)) { ndev->stats.rx_packets++; ndev->stats.rx_bytes += sz; if (stats) { stats->rx_packets++; stats->rx_bytes += sz; } } else { ndev->stats.rx_dropped++; if (stats) stats->rx_dropped++; } } static void wil_addba_tx_cid(struct wil6210_priv *wil, u8 cid, u16 wsize) { struct vring_tx_data *t; int i; for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) { if (cid != wil->vring2cid_tid[i][0]) continue; t = &wil->vring_tx_data[i]; if (!t->enabled) continue; wil_addba_tx_request(wil, i, wsize); } } static void wmi_evt_linkup(struct wil6210_priv *wil, int id, void *d, int len) { struct wmi_data_port_open_event *evt = d; u8 cid = evt->cid; wil_dbg_wmi(wil, "Link UP for CID %d\n", cid); if (cid >= ARRAY_SIZE(wil->sta)) { wil_err(wil, "Link UP for invalid CID %d\n", cid); return; } wil->sta[cid].data_port_open = true; if (agg_wsize >= 0) wil_addba_tx_cid(wil, cid, agg_wsize); } static void wmi_evt_linkdown(struct wil6210_priv *wil, int id, void *d, int len) { struct net_device *ndev = wil_to_ndev(wil); struct wmi_wbe_link_down_event *evt = d; u8 cid = evt->cid; wil_dbg_wmi(wil, "Link DOWN for CID %d, reason %d\n", cid, le32_to_cpu(evt->reason)); if (cid >= ARRAY_SIZE(wil->sta)) { wil_err(wil, "Link DOWN for invalid CID %d\n", cid); return; } wil->sta[cid].data_port_open = false; netif_carrier_off(ndev); } static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d, int len) { struct wmi_vring_ba_status_event *evt = d; struct vring_tx_data *txdata; wil_dbg_wmi(wil, "BACK[%d] %s {%d} timeout %d AMSDU%s\n", evt->ringid, evt->status == WMI_BA_AGREED ? "OK" : "N/A", evt->agg_wsize, __le16_to_cpu(evt->ba_timeout), evt->amsdu ? "+" : "-"); if (evt->ringid >= WIL6210_MAX_TX_RINGS) { wil_err(wil, "invalid ring id %d\n", evt->ringid); return; } if (evt->status != WMI_BA_AGREED) { evt->ba_timeout = 0; evt->agg_wsize = 0; evt->amsdu = 0; } txdata = &wil->vring_tx_data[evt->ringid]; txdata->agg_timeout = le16_to_cpu(evt->ba_timeout); txdata->agg_wsize = evt->agg_wsize; txdata->agg_amsdu = evt->amsdu; txdata->addba_in_progress = false; } static void wmi_evt_addba_rx_req(struct wil6210_priv *wil, int id, void *d, int len) { struct wmi_rcp_addba_req_event *evt = d; wil_addba_rx_request(wil, evt->cidxtid, evt->dialog_token, evt->ba_param_set, evt->ba_timeout, evt->ba_seq_ctrl); } static void wmi_evt_delba(struct wil6210_priv *wil, int id, void *d, int len) __acquires(&sta->tid_rx_lock) __releases(&sta->tid_rx_lock) { struct wmi_delba_event *evt = d; u8 cid, tid; u16 reason = __le16_to_cpu(evt->reason); struct wil_sta_info *sta; struct wil_tid_ampdu_rx *r; might_sleep(); parse_cidxtid(evt->cidxtid, &cid, &tid); wil_dbg_wmi(wil, "DELBA CID %d TID %d from %s reason %d\n", cid, tid, evt->from_initiator ? "originator" : "recipient", reason); if (!evt->from_initiator) { int i; /* find Tx vring it belongs to */ for (i = 0; i < ARRAY_SIZE(wil->vring2cid_tid); i++) { if ((wil->vring2cid_tid[i][0] == cid) && (wil->vring2cid_tid[i][1] == tid)) { struct vring_tx_data *txdata = &wil->vring_tx_data[i]; wil_dbg_wmi(wil, "DELBA Tx vring %d\n", i); txdata->agg_timeout = 0; txdata->agg_wsize = 0; txdata->addba_in_progress = false; break; /* max. 1 matching ring */ } } if (i >= ARRAY_SIZE(wil->vring2cid_tid)) wil_err(wil, "DELBA: unable to find Tx vring\n"); return; } sta = &wil->sta[cid]; spin_lock_bh(&sta->tid_rx_lock); r = sta->tid_rx[tid]; sta->tid_rx[tid] = NULL; wil_tid_ampdu_rx_free(wil, r); spin_unlock_bh(&sta->tid_rx_lock); } static const struct { int eventid; void (*handler)(struct wil6210_priv *wil, int eventid, void *data, int data_len); } wmi_evt_handlers[] = { {WMI_READY_EVENTID, wmi_evt_ready}, {WMI_FW_READY_EVENTID, wmi_evt_fw_ready}, {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt}, {WMI_SCAN_COMPLETE_EVENTID, wmi_evt_scan_complete}, {WMI_CONNECT_EVENTID, wmi_evt_connect}, {WMI_DISCONNECT_EVENTID, wmi_evt_disconnect}, {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx}, {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_linkup}, {WMI_WBE_LINKDOWN_EVENTID, wmi_evt_linkdown}, {WMI_BA_STATUS_EVENTID, wmi_evt_ba_status}, {WMI_RCP_ADDBA_REQ_EVENTID, wmi_evt_addba_rx_req}, {WMI_DELBA_EVENTID, wmi_evt_delba}, }; /* * Run in IRQ context * Extract WMI command from mailbox. Queue it to the @wil->pending_wmi_ev * that will be eventually handled by the @wmi_event_worker in the thread * context of thread "wil6210_wmi" */ void wmi_recv_cmd(struct wil6210_priv *wil) { struct wil6210_mbox_ring_desc d_tail; struct wil6210_mbox_hdr hdr; struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx; struct pending_wmi_event *evt; u8 *cmd; void __iomem *src; ulong flags; unsigned n; if (!test_bit(wil_status_reset_done, wil->status)) { wil_err(wil, "Reset in progress. Cannot handle WMI event\n"); return; } for (n = 0;; n++) { u16 len; bool q; r->head = ioread32(wil->csr + HOST_MBOX + offsetof(struct wil6210_mbox_ctl, rx.head)); if (r->tail == r->head) break; wil_dbg_wmi(wil, "Mbox head %08x tail %08x\n", r->head, r->tail); /* read cmd descriptor from tail */ wil_memcpy_fromio_32(&d_tail, wil->csr + HOSTADDR(r->tail), sizeof(struct wil6210_mbox_ring_desc)); if (d_tail.sync == 0) { wil_err(wil, "Mbox evt not owned by FW?\n"); break; } /* read cmd header from descriptor */ if (0 != wmi_read_hdr(wil, d_tail.addr, &hdr)) { wil_err(wil, "Mbox evt at 0x%08x?\n", le32_to_cpu(d_tail.addr)); break; } len = le16_to_cpu(hdr.len); wil_dbg_wmi(wil, "Mbox evt %04x %04x %04x %02x\n", le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type), hdr.flags); /* read cmd buffer from descriptor */ src = wmi_buffer(wil, d_tail.addr) + sizeof(struct wil6210_mbox_hdr); evt = kmalloc(ALIGN(offsetof(struct pending_wmi_event, event.wmi) + len, 4), GFP_KERNEL); if (!evt) break; evt->event.hdr = hdr; cmd = (void *)&evt->event.wmi; wil_memcpy_fromio_32(cmd, src, len); /* mark entry as empty */ iowrite32(0, wil->csr + HOSTADDR(r->tail) + offsetof(struct wil6210_mbox_ring_desc, sync)); /* indicate */ if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) && (len >= sizeof(struct wil6210_mbox_hdr_wmi))) { struct wil6210_mbox_hdr_wmi *wmi = &evt->event.wmi; u16 id = le16_to_cpu(wmi->id); u32 tstamp = le32_to_cpu(wmi->timestamp); wil_dbg_wmi(wil, "WMI event 0x%04x MID %d @%d msec\n", id, wmi->mid, tstamp); trace_wil6210_wmi_event(wmi, &wmi[1], len - sizeof(*wmi)); } wil_hex_dump_wmi("evt ", DUMP_PREFIX_OFFSET, 16, 1, &evt->event.hdr, sizeof(hdr) + len, true); /* advance tail */ r->tail = r->base + ((r->tail - r->base + sizeof(struct wil6210_mbox_ring_desc)) % r->size); iowrite32(r->tail, wil->csr + HOST_MBOX + offsetof(struct wil6210_mbox_ctl, rx.tail)); /* add to the pending list */ spin_lock_irqsave(&wil->wmi_ev_lock, flags); list_add_tail(&evt->list, &wil->pending_wmi_ev); spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); q = queue_work(wil->wmi_wq, &wil->wmi_event_worker); wil_dbg_wmi(wil, "queue_work -> %d\n", q); } /* normally, 1 event per IRQ should be processed */ wil_dbg_wmi(wil, "%s -> %d events queued\n", __func__, n); } int wmi_call(struct wil6210_priv *wil, u16 cmdid, void *buf, u16 len, u16 reply_id, void *reply, u8 reply_size, int to_msec) { int rc; int remain; mutex_lock(&wil->wmi_mutex); rc = __wmi_send(wil, cmdid, buf, len); if (rc) goto out; wil->reply_id = reply_id; wil->reply_buf = reply; wil->reply_size = reply_size; remain = wait_for_completion_timeout(&wil->wmi_call, msecs_to_jiffies(to_msec)); if (0 == remain) { wil_err(wil, "wmi_call(0x%04x->0x%04x) timeout %d msec\n", cmdid, reply_id, to_msec); rc = -ETIME; } else { wil_dbg_wmi(wil, "wmi_call(0x%04x->0x%04x) completed in %d msec\n", cmdid, reply_id, to_msec - jiffies_to_msecs(remain)); } wil->reply_id = 0; wil->reply_buf = NULL; wil->reply_size = 0; out: mutex_unlock(&wil->wmi_mutex); return rc; } int wmi_echo(struct wil6210_priv *wil) { struct wmi_echo_cmd cmd = { .value = cpu_to_le32(0x12345678), }; return wmi_call(wil, WMI_ECHO_CMDID, &cmd, sizeof(cmd), WMI_ECHO_RSP_EVENTID, NULL, 0, 20); } int wmi_set_mac_address(struct wil6210_priv *wil, void *addr) { struct wmi_set_mac_address_cmd cmd; memcpy(cmd.mac, addr, ETH_ALEN); wil_dbg_wmi(wil, "Set MAC %pM\n", addr); return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd)); } int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, u8 chan) { int rc; struct wmi_pcp_start_cmd cmd = { .bcon_interval = cpu_to_le16(bi), .network_type = wmi_nettype, .disable_sec_offload = 1, .channel = chan - 1, .pcp_max_assoc_sta = max_assoc_sta, }; struct { struct wil6210_mbox_hdr_wmi wmi; struct wmi_pcp_started_event evt; } __packed reply; if (!wil->secure_pcp) cmd.disable_sec = 1; if ((cmd.pcp_max_assoc_sta > WIL6210_MAX_CID) || (cmd.pcp_max_assoc_sta <= 0)) { wil_info(wil, "Requested connection limit %u, valid values are 1 - %d. Setting to %d\n", max_assoc_sta, WIL6210_MAX_CID, WIL6210_MAX_CID); cmd.pcp_max_assoc_sta = WIL6210_MAX_CID; } /* * Processing time may be huge, in case of secure AP it takes about * 3500ms for FW to start AP */ rc = wmi_call(wil, WMI_PCP_START_CMDID, &cmd, sizeof(cmd), WMI_PCP_STARTED_EVENTID, &reply, sizeof(reply), 5000); if (rc) return rc; if (reply.evt.status != WMI_FW_STATUS_SUCCESS) rc = -EINVAL; return rc; } int wmi_pcp_stop(struct wil6210_priv *wil) { return wmi_call(wil, WMI_PCP_STOP_CMDID, NULL, 0, WMI_PCP_STOPPED_EVENTID, NULL, 0, 20); } int wmi_set_ssid(struct wil6210_priv *wil, u8 ssid_len, const void *ssid) { struct wmi_set_ssid_cmd cmd = { .ssid_len = cpu_to_le32(ssid_len), }; if (ssid_len > sizeof(cmd.ssid)) return -EINVAL; memcpy(cmd.ssid, ssid, ssid_len); return wmi_send(wil, WMI_SET_SSID_CMDID, &cmd, sizeof(cmd)); } int wmi_get_ssid(struct wil6210_priv *wil, u8 *ssid_len, void *ssid) { int rc; struct { struct wil6210_mbox_hdr_wmi wmi; struct wmi_set_ssid_cmd cmd; } __packed reply; int len; /* reply.cmd.ssid_len in CPU order */ rc = wmi_call(wil, WMI_GET_SSID_CMDID, NULL, 0, WMI_GET_SSID_EVENTID, &reply, sizeof(reply), 20); if (rc) return rc; len = le32_to_cpu(reply.cmd.ssid_len); if (len > sizeof(reply.cmd.ssid)) return -EINVAL; *ssid_len = len; memcpy(ssid, reply.cmd.ssid, len); return 0; } int wmi_set_channel(struct wil6210_priv *wil, int channel) { struct wmi_set_pcp_channel_cmd cmd = { .channel = channel - 1, }; return wmi_send(wil, WMI_SET_PCP_CHANNEL_CMDID, &cmd, sizeof(cmd)); } int wmi_get_channel(struct wil6210_priv *wil, int *channel) { int rc; struct { struct wil6210_mbox_hdr_wmi wmi; struct wmi_set_pcp_channel_cmd cmd; } __packed reply; rc = wmi_call(wil, WMI_GET_PCP_CHANNEL_CMDID, NULL, 0, WMI_GET_PCP_CHANNEL_EVENTID, &reply, sizeof(reply), 20); if (rc) return rc; if (reply.cmd.channel > 3) return -EINVAL; *channel = reply.cmd.channel + 1; return 0; } int wmi_p2p_cfg(struct wil6210_priv *wil, int channel) { struct wmi_p2p_cfg_cmd cmd = { .discovery_mode = WMI_DISCOVERY_MODE_NON_OFFLOAD, .channel = channel - 1, }; return wmi_send(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd)); } int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index, const void *mac_addr) { struct wmi_delete_cipher_key_cmd cmd = { .key_index = key_index, }; if (mac_addr) memcpy(cmd.mac, mac_addr, WMI_MAC_LEN); return wmi_send(wil, WMI_DELETE_CIPHER_KEY_CMDID, &cmd, sizeof(cmd)); } int wmi_add_cipher_key(struct wil6210_priv *wil, u8 key_index, const void *mac_addr, int key_len, const void *key) { struct wmi_add_cipher_key_cmd cmd = { .key_index = key_index, .key_usage = WMI_KEY_USE_PAIRWISE, .key_len = key_len, }; if (!key || (key_len > sizeof(cmd.key))) return -EINVAL; memcpy(cmd.key, key, key_len); if (mac_addr) memcpy(cmd.mac, mac_addr, WMI_MAC_LEN); return wmi_send(wil, WMI_ADD_CIPHER_KEY_CMDID, &cmd, sizeof(cmd)); } int wmi_set_ie(struct wil6210_priv *wil, u8 type, u16 ie_len, const void *ie) { int rc; u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len; struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL); if (!cmd) return -ENOMEM; if (!ie) ie_len = 0; cmd->mgmt_frm_type = type; /* BUG: FW API define ieLen as u8. Will fix FW */ cmd->ie_len = cpu_to_le16(ie_len); memcpy(cmd->ie_info, ie, ie_len); rc = wmi_send(wil, WMI_SET_APPIE_CMDID, cmd, len); kfree(cmd); return rc; } /** * wmi_rxon - turn radio on/off * @on: turn on if true, off otherwise * * Only switch radio. Channel should be set separately. * No timeout for rxon - radio turned on forever unless some other call * turns it off */ int wmi_rxon(struct wil6210_priv *wil, bool on) { int rc; struct { struct wil6210_mbox_hdr_wmi wmi; struct wmi_listen_started_event evt; } __packed reply; wil_info(wil, "%s(%s)\n", __func__, on ? "on" : "off"); if (on) { rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0, WMI_LISTEN_STARTED_EVENTID, &reply, sizeof(reply), 100); if ((rc == 0) && (reply.evt.status != WMI_FW_STATUS_SUCCESS)) rc = -EINVAL; } else { rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0, WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 20); } return rc; } int wmi_rx_chain_add(struct wil6210_priv *wil, struct vring *vring) { struct wireless_dev *wdev = wil->wdev; struct net_device *ndev = wil_to_ndev(wil); struct wmi_cfg_rx_chain_cmd cmd = { .action = WMI_RX_CHAIN_ADD, .rx_sw_ring = { .max_mpdu_size = cpu_to_le16(wil_mtu2macbuf(mtu_max)), .ring_mem_base = cpu_to_le64(vring->pa), .ring_size = cpu_to_le16(vring->size), }, .mid = 0, /* TODO - what is it? */ .decap_trans_type = WMI_DECAP_TYPE_802_3, .reorder_type = WMI_RX_SW_REORDER, .host_thrsh = cpu_to_le16(rx_ring_overflow_thrsh), }; struct { struct wil6210_mbox_hdr_wmi wmi; struct wmi_cfg_rx_chain_done_event evt; } __packed evt; int rc; if (wdev->iftype == NL80211_IFTYPE_MONITOR) { struct ieee80211_channel *ch = wdev->preset_chandef.chan; cmd.sniffer_cfg.mode = cpu_to_le32(WMI_SNIFFER_ON); if (ch) cmd.sniffer_cfg.channel = ch->hw_value - 1; cmd.sniffer_cfg.phy_info_mode = cpu_to_le32(ndev->type == ARPHRD_IEEE80211_RADIOTAP); cmd.sniffer_cfg.phy_support = cpu_to_le32((wil->monitor_flags & MONITOR_FLAG_CONTROL) ? WMI_SNIFFER_CP : WMI_SNIFFER_DP); } else { /* Initialize offload (in non-sniffer mode). * Linux IP stack always calculates IP checksum * HW always calculate TCP/UDP checksum */ cmd.l3_l4_ctrl |= (1 << L3_L4_CTRL_TCPIP_CHECKSUM_EN_POS); } /* typical time for secure PCP is 840ms */ rc = wmi_call(wil, WMI_CFG_RX_CHAIN_CMDID, &cmd, sizeof(cmd), WMI_CFG_RX_CHAIN_DONE_EVENTID, &evt, sizeof(evt), 2000); if (rc) return rc; vring->hwtail = le32_to_cpu(evt.evt.rx_ring_tail_ptr); wil_dbg_misc(wil, "Rx init: status %d tail 0x%08x\n", le32_to_cpu(evt.evt.status), vring->hwtail); if (le32_to_cpu(evt.evt.status) != WMI_CFG_RX_CHAIN_SUCCESS) rc = -EINVAL; return rc; } int wmi_get_temperature(struct wil6210_priv *wil, u32 *t_bb, u32 *t_rf) { int rc; struct wmi_temp_sense_cmd cmd = { .measure_baseband_en = cpu_to_le32(!!t_bb), .measure_rf_en = cpu_to_le32(!!t_rf), .measure_mode = cpu_to_le32(TEMPERATURE_MEASURE_NOW), }; struct { struct wil6210_mbox_hdr_wmi wmi; struct wmi_temp_sense_done_event evt; } __packed reply; rc = wmi_call(wil, WMI_TEMP_SENSE_CMDID, &cmd, sizeof(cmd), WMI_TEMP_SENSE_DONE_EVENTID, &reply, sizeof(reply), 100); if (rc) return rc; if (t_bb) *t_bb = le32_to_cpu(reply.evt.baseband_t1000); if (t_rf) *t_rf = le32_to_cpu(reply.evt.rf_t1000); return 0; } int wmi_disconnect_sta(struct wil6210_priv *wil, const u8 *mac, u16 reason) { struct wmi_disconnect_sta_cmd cmd = { .disconnect_reason = cpu_to_le16(reason), }; memcpy(cmd.dst_mac, mac, ETH_ALEN); wil_dbg_wmi(wil, "%s(%pM, reason %d)\n", __func__, mac, reason); return wmi_send(wil, WMI_DISCONNECT_STA_CMDID, &cmd, sizeof(cmd)); } int wmi_addba(struct wil6210_priv *wil, u8 ringid, u8 size, u16 timeout) { struct wmi_vring_ba_en_cmd cmd = { .ringid = ringid, .agg_max_wsize = size, .ba_timeout = cpu_to_le16(timeout), .amsdu = 0, }; wil_dbg_wmi(wil, "%s(ring %d size %d timeout %d)\n", __func__, ringid, size, timeout); return wmi_send(wil, WMI_VRING_BA_EN_CMDID, &cmd, sizeof(cmd)); } int wmi_delba_tx(struct wil6210_priv *wil, u8 ringid, u16 reason) { struct wmi_vring_ba_dis_cmd cmd = { .ringid = ringid, .reason = cpu_to_le16(reason), }; wil_dbg_wmi(wil, "%s(ring %d reason %d)\n", __func__, ringid, reason); return wmi_send(wil, WMI_VRING_BA_DIS_CMDID, &cmd, sizeof(cmd)); } int wmi_delba_rx(struct wil6210_priv *wil, u8 cidxtid, u16 reason) { struct wmi_rcp_delba_cmd cmd = { .cidxtid = cidxtid, .reason = cpu_to_le16(reason), }; wil_dbg_wmi(wil, "%s(CID %d TID %d reason %d)\n", __func__, cidxtid & 0xf, (cidxtid >> 4) & 0xf, reason); return wmi_send(wil, WMI_RCP_DELBA_CMDID, &cmd, sizeof(cmd)); } int wmi_addba_rx_resp(struct wil6210_priv *wil, u8 cid, u8 tid, u8 token, u16 status, bool amsdu, u16 agg_wsize, u16 timeout) { int rc; struct wmi_rcp_addba_resp_cmd cmd = { .cidxtid = mk_cidxtid(cid, tid), .dialog_token = token, .status_code = cpu_to_le16(status), /* bit 0: A-MSDU supported * bit 1: policy (should be 0 for us) * bits 2..5: TID * bits 6..15: buffer size */ .ba_param_set = cpu_to_le16((amsdu ? 1 : 0) | (tid << 2) | (agg_wsize << 6)), .ba_timeout = cpu_to_le16(timeout), }; struct { struct wil6210_mbox_hdr_wmi wmi; struct wmi_rcp_addba_resp_sent_event evt; } __packed reply; wil_dbg_wmi(wil, "ADDBA response for CID %d TID %d size %d timeout %d status %d AMSDU%s\n", cid, tid, agg_wsize, timeout, status, amsdu ? "+" : "-"); rc = wmi_call(wil, WMI_RCP_ADDBA_RESP_CMDID, &cmd, sizeof(cmd), WMI_ADDBA_RESP_SENT_EVENTID, &reply, sizeof(reply), 100); if (rc) return rc; if (reply.evt.status) { wil_err(wil, "ADDBA response failed with status %d\n", le16_to_cpu(reply.evt.status)); rc = -EINVAL; } return rc; } void wmi_event_flush(struct wil6210_priv *wil) { struct pending_wmi_event *evt, *t; wil_dbg_wmi(wil, "%s()\n", __func__); list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) { list_del(&evt->list); kfree(evt); } } static bool wmi_evt_call_handler(struct wil6210_priv *wil, int id, void *d, int len) { uint i; for (i = 0; i < ARRAY_SIZE(wmi_evt_handlers); i++) { if (wmi_evt_handlers[i].eventid == id) { wmi_evt_handlers[i].handler(wil, id, d, len); return true; } } return false; } static void wmi_event_handle(struct wil6210_priv *wil, struct wil6210_mbox_hdr *hdr) { u16 len = le16_to_cpu(hdr->len); if ((hdr->type == WIL_MBOX_HDR_TYPE_WMI) && (len >= sizeof(struct wil6210_mbox_hdr_wmi))) { struct wil6210_mbox_hdr_wmi *wmi = (void *)(&hdr[1]); void *evt_data = (void *)(&wmi[1]); u16 id = le16_to_cpu(wmi->id); wil_dbg_wmi(wil, "Handle WMI 0x%04x (reply_id 0x%04x)\n", id, wil->reply_id); /* check if someone waits for this event */ if (wil->reply_id && wil->reply_id == id) { if (wil->reply_buf) { memcpy(wil->reply_buf, wmi, min(len, wil->reply_size)); } else { wmi_evt_call_handler(wil, id, evt_data, len - sizeof(*wmi)); } wil_dbg_wmi(wil, "Complete WMI 0x%04x\n", id); complete(&wil->wmi_call); return; } /* unsolicited event */ /* search for handler */ if (!wmi_evt_call_handler(wil, id, evt_data, len - sizeof(*wmi))) { wil_err(wil, "Unhandled event 0x%04x\n", id); } } else { wil_err(wil, "Unknown event type\n"); print_hex_dump(KERN_ERR, "evt?? ", DUMP_PREFIX_OFFSET, 16, 1, hdr, sizeof(*hdr) + len, true); } } /* * Retrieve next WMI event from the pending list */ static struct list_head *next_wmi_ev(struct wil6210_priv *wil) { ulong flags; struct list_head *ret = NULL; spin_lock_irqsave(&wil->wmi_ev_lock, flags); if (!list_empty(&wil->pending_wmi_ev)) { ret = wil->pending_wmi_ev.next; list_del(ret); } spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); return ret; } /* * Handler for the WMI events */ void wmi_event_worker(struct work_struct *work) { struct wil6210_priv *wil = container_of(work, struct wil6210_priv, wmi_event_worker); struct pending_wmi_event *evt; struct list_head *lh; wil_dbg_wmi(wil, "Start %s\n", __func__); while ((lh = next_wmi_ev(wil)) != NULL) { evt = list_entry(lh, struct pending_wmi_event, list); wmi_event_handle(wil, &evt->event.hdr); kfree(evt); } wil_dbg_wmi(wil, "Finished %s\n", __func__); }