diff options
Diffstat (limited to 'drivers/net/wireless/ath/wil6210/wmi.c')
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/wmi.c | 2004 |
1 files changed, 2004 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/wil6210/wmi.c b/drivers/net/wireless/ath/wil6210/wmi.c new file mode 100644 index 0000000..ffdd2fa --- /dev/null +++ b/drivers/net/wireless/ath/wil6210/wmi.c @@ -0,0 +1,2004 @@ +/* + * Copyright (c) 2012-2017 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 <linux/moduleparam.h> +#include <linux/etherdevice.h> +#include <linux/if_arp.h> + +#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, 0644); +MODULE_PARM_DESC(max_assoc_sta, " Max number of stations associated to the AP"); + +int agg_wsize; /* = 0; */ +module_param(agg_wsize, int, 0644); +MODULE_PARM_DESC(agg_wsize, " Window size for Tx Block Ack after connect;" + " 0 - use default; < 0 - don't auto-establish"); + +u8 led_id = WIL_LED_INVALID_ID; +module_param(led_id, byte, 0444); +MODULE_PARM_DESC(led_id, + " 60G device led enablement. Set the led ID (0-2) to enable"); + +#define WIL_WAIT_FOR_SUSPEND_RESUME_COMP 200 + +/** + * 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[] = { + /* FW code RAM 256k */ + {0x000000, 0x040000, 0x8c0000, "fw_code", true}, + /* FW data RAM 32k */ + {0x800000, 0x808000, 0x900000, "fw_data", true}, + /* periph data 128k */ + {0x840000, 0x860000, 0x908000, "fw_peri", true}, + /* various RGF 40k */ + {0x880000, 0x88a000, 0x880000, "rgf", true}, + /* AGC table 4k */ + {0x88a000, 0x88b000, 0x88a000, "AGC_tbl", true}, + /* Pcie_ext_rgf 4k */ + {0x88b000, 0x88c000, 0x88b000, "rgf_ext", true}, + /* mac_ext_rgf 512b */ + {0x88c000, 0x88c200, 0x88c000, "mac_rgf_ext", true}, + /* upper area 548k */ + {0x8c0000, 0x949000, 0x8c0000, "upper", true}, + /* UCODE areas - accessible by debugfs blobs but not by + * wmi_addr_remap. UCODE areas MUST be added AFTER FW areas! + */ + /* ucode code RAM 128k */ + {0x000000, 0x020000, 0x920000, "uc_code", false}, + /* ucode data RAM 16k */ + {0x800000, 0x804000, 0x940000, "uc_data", false}, +}; + +struct blink_on_off_time led_blink_time[] = { + {WIL_LED_BLINK_ON_SLOW_MS, WIL_LED_BLINK_OFF_SLOW_MS}, + {WIL_LED_BLINK_ON_MED_MS, WIL_LED_BLINK_OFF_MED_MS}, + {WIL_LED_BLINK_ON_FAST_MS, WIL_LED_BLINK_OFF_FAST_MS}, +}; + +u8 led_polarity = LED_POLARITY_LOW_ACTIVE; + +/** + * return AHB address for given firmware 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 (fw_mapping[i].fw && + ((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 > wil->bar_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 > wil->bar_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 wmi_cmd_hdr wmi; + } __packed cmd = { + .hdr = { + .type = WIL_MBOX_HDR_TYPE_WMI, + .flags = 0, + .len = cpu_to_le16(sizeof(cmd.wmi) + len), + }, + .wmi = { + .mid = 0, + .command_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; + int rc = 0; + + 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; + } + + /* Allow sending only suspend / resume commands during susepnd flow */ + if ((test_bit(wil_status_suspending, wil->status) || + test_bit(wil_status_suspended, wil->status) || + test_bit(wil_status_resuming, wil->status)) && + ((cmdid != WMI_TRAFFIC_SUSPEND_CMDID) && + (cmdid != WMI_TRAFFIC_RESUME_CMDID))) { + wil_err(wil, "WMI: reject send_command during suspend\n"); + return -EINVAL; + } + + if (!head) { + wil_err(wil, "WMI head is garbage: 0x%08x\n", r->head); + return -EINVAL; + } + + wil_halp_vote(wil); + + /* 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"); + rc = -EBUSY; + goto out; + } + /* 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--) { + if (!test_bit(wil_status_fwready, wil->status)) { + wil_err(wil, "WMI: cannot send command while FW not ready\n"); + rc = -EAGAIN; + goto out; + } + r->tail = wil_r(wil, RGF_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"); + rc = -EBUSY; + goto out; + } + dst = wmi_buffer(wil, d_head.addr); + if (!dst) { + wil_err(wil, "invalid WMI buffer: 0x%08x\n", + le32_to_cpu(d_head.addr)); + rc = -EAGAIN; + goto out; + } + 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 */ + wil_w(wil, r->head + offsetof(struct wil6210_mbox_ring_desc, sync), 1); + /* advance next ptr */ + wil_w(wil, RGF_MBOX + offsetof(struct wil6210_mbox_ctl, tx.head), + r->head = next_head); + + trace_wil6210_wmi_cmd(&cmd.wmi, buf, len); + + /* interrupt to FW */ + wil_w(wil, RGF_USER_USER_ICR + offsetof(struct RGF_ICR, ICS), + SW_INT_MBOX); + +out: + wil_halp_unvote(wil); + return rc; +} + +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->n_mids = evt->numof_additional_mids; + + wil_info(wil, "FW ver. %s(SW %d); MAC %pM; %d MID's\n", + wil->fw_version, le32_to_cpu(evt->sw_version), + evt->mac, wil->n_mids); + /* ignore MAC address, we already have it from the boot loader */ + strlcpy(wdev->wiphy->fw_version, wil->fw_version, + sizeof(wdev->wiphy->fw_version)); + + if (len > offsetof(struct wmi_ready_event, rfc_read_calib_result)) { + wil_dbg_wmi(wil, "rfc calibration result %d\n", + evt->rfc_read_calib_result); + wil->fw_calib_result = evt->rfc_read_calib_result; + } + 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 flen = len - offsetof(struct wmi_rx_mgmt_packet_event, payload); + int ch_no; + u32 freq; + struct ieee80211_channel *channel; + s32 signal; + __le16 fc; + u32 d_len; + u16 d_status; + + if (flen < 0) { + wil_err(wil, "MGMT Rx: short event, len %d\n", len); + return; + } + + d_len = le32_to_cpu(data->info.len); + if (d_len != flen) { + wil_err(wil, + "MGMT Rx: length mismatch, d_len %d should be %d\n", + d_len, flen); + return; + } + + ch_no = data->info.channel + 1; + freq = ieee80211_channel_to_frequency(ch_no, NL80211_BAND_60GHZ); + channel = ieee80211_get_channel(wiphy, freq); + if (test_bit(WMI_FW_CAPABILITY_RSSI_REPORTING, wil->fw_capabilities)) + signal = 100 * data->info.rssi; + else + signal = data->info.sqi; + d_status = le16_to_cpu(data->info.status); + fc = rx_mgmt_frame->frame_control; + + wil_dbg_wmi(wil, "MGMT Rx: channel %d MCS %d RSSI %d SQI %d%%\n", + data->info.channel, data->info.mcs, data->info.rssi, + 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); + wil_hex_dump_wmi("MGMT Rx ", DUMP_PREFIX_OFFSET, 16, 1, rx_mgmt_frame, + d_len, true); + + 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); + + wil_dbg_wmi(wil, "Capability info : 0x%04x\n", cap); + + 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 { + mutex_lock(&wil->p2p_wdev_mutex); + cfg80211_rx_mgmt(wil->radio_wdev, freq, signal, + (void *)rx_mgmt_frame, d_len, 0); + mutex_unlock(&wil->p2p_wdev_mutex); + } +} + +static void wmi_evt_tx_mgmt(struct wil6210_priv *wil, int id, void *d, int len) +{ + struct wmi_tx_mgmt_packet_event *data = d; + struct ieee80211_mgmt *mgmt_frame = + (struct ieee80211_mgmt *)data->payload; + int flen = len - offsetof(struct wmi_tx_mgmt_packet_event, payload); + + wil_hex_dump_wmi("MGMT Tx ", DUMP_PREFIX_OFFSET, 16, 1, mgmt_frame, + flen, true); +} + +static void wmi_evt_scan_complete(struct wil6210_priv *wil, int id, + void *d, int len) +{ + mutex_lock(&wil->p2p_wdev_mutex); + if (wil->scan_request) { + struct wmi_scan_complete_event *data = d; + int status = le32_to_cpu(data->status); + struct cfg80211_scan_info info = { + .aborted = ((status != WMI_SCAN_SUCCESS) && + (status != WMI_SCAN_ABORT_REJECTED)), + }; + + wil_dbg_wmi(wil, "SCAN_COMPLETE(0x%08x)\n", status); + wil_dbg_misc(wil, "Complete scan_request 0x%p aborted %d\n", + wil->scan_request, info.aborted); + del_timer_sync(&wil->scan_timer); + cfg80211_scan_done(wil->scan_request, &info); + wil->radio_wdev = wil->wdev; + wil->scan_request = NULL; + wake_up_interruptible(&wil->wq); + if (wil->p2p.pending_listen_wdev) { + wil_dbg_misc(wil, "Scheduling delayed listen\n"); + schedule_work(&wil->p2p.delayed_listen_work); + } + } else { + wil_err(wil, "SCAN_COMPLETE while not scanning\n"); + } + mutex_unlock(&wil->p2p_wdev_mutex); +} + +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; + int rc; + + 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_info(wil, "Connect %pM channel [%d] cid %d aid %d\n", + evt->bssid, ch, evt->cid, evt->aid); + 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 (test_bit(wil_status_resetting, wil->status) || + !test_bit(wil_status_fwready, wil->status)) { + wil_err(wil, "status_resetting, cancel connect event, CID %d\n", + evt->cid); + /* no need for cleanup, wil_reset will do that */ + return; + } + + mutex_lock(&wil->mutex); + + 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"); + mutex_unlock(&wil->mutex); + return; + } + del_timer_sync(&wil->connect_timer); + } else if ((wdev->iftype == NL80211_IFTYPE_AP) || + (wdev->iftype == NL80211_IFTYPE_P2P_GO)) { + if (wil->sta[evt->cid].status != wil_sta_unused) { + wil_err(wil, "AP: Invalid status %d for CID %d\n", + wil->sta[evt->cid].status, evt->cid); + mutex_unlock(&wil->mutex); + return; + } + } + + /* FIXME FW can transmit only ucast frames to peer */ + /* FIXME real ring_id instead of hard coded 0 */ + ether_addr_copy(wil->sta[evt->cid].addr, evt->bssid); + wil->sta[evt->cid].status = wil_sta_conn_pending; + + rc = wil_tx_init(wil, evt->cid); + if (rc) { + wil_err(wil, "config tx vring failed for CID %d, rc (%d)\n", + evt->cid, rc); + wmi_disconnect_sta(wil, wil->sta[evt->cid].addr, + WLAN_REASON_UNSPECIFIED, false, false); + } else { + wil_info(wil, "successful connection to CID %d\n", evt->cid); + } + + if ((wdev->iftype == NL80211_IFTYPE_STATION) || + (wdev->iftype == NL80211_IFTYPE_P2P_CLIENT)) { + if (rc) { + netif_carrier_off(ndev); + wil6210_bus_request(wil, WIL_DEFAULT_BUS_REQUEST_KBPS); + wil_err(wil, "cfg80211_connect_result with failure\n"); + cfg80211_connect_result(ndev, evt->bssid, NULL, 0, + NULL, 0, + WLAN_STATUS_UNSPECIFIED_FAILURE, + GFP_KERNEL); + goto out; + } else { + struct wiphy *wiphy = wil_to_wiphy(wil); + + cfg80211_ref_bss(wiphy, wil->bss); + cfg80211_connect_bss(ndev, evt->bssid, wil->bss, + assoc_req_ie, assoc_req_ielen, + assoc_resp_ie, assoc_resp_ielen, + WLAN_STATUS_SUCCESS, GFP_KERNEL, + NL80211_TIMEOUT_UNSPECIFIED); + } + wil->bss = NULL; + } else if ((wdev->iftype == NL80211_IFTYPE_AP) || + (wdev->iftype == NL80211_IFTYPE_P2P_GO)) { + if (rc) { + if (disable_ap_sme) + /* notify new_sta has failed */ + cfg80211_del_sta(ndev, evt->bssid, GFP_KERNEL); + goto out; + } + + 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); + } else { + wil_err(wil, "unhandled iftype %d for CID %d\n", wdev->iftype, + evt->cid); + goto out; + } + + wil->sta[evt->cid].status = wil_sta_connected; + wil->sta[evt->cid].aid = evt->aid; + set_bit(wil_status_fwconnected, wil->status); + wil_update_net_queues_bh(wil, NULL, false); + +out: + if (rc) + wil->sta[evt->cid].status = wil_sta_unused; + clear_bit(wil_status_fwconnecting, wil->status); + mutex_unlock(&wil->mutex); +} + +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_info(wil, "Disconnect %pM reason [proto %d wmi %d]\n", + evt->bssid, reason_code, evt->disconnect_reason); + + wil->sinfo_gen++; + + if (test_bit(wil_status_resetting, wil->status) || + !test_bit(wil_status_fwready, wil->status)) { + wil_err(wil, "status_resetting, cancel disconnect event\n"); + /* no need for cleanup, wil_reset will do that */ + return; + } + + 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 = skb_put(skb, ETH_HLEN); + ether_addr_copy(eth->h_dest, ndev->dev_addr); + ether_addr_copy(eth->h_source, evt->src_mac); + eth->h_proto = cpu_to_be16(ETH_P_PAE); + skb_put_data(skb, 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 wmi_evt_vring_en(struct wil6210_priv *wil, int id, void *d, int len) +{ + struct wmi_vring_en_event *evt = d; + u8 vri = evt->vring_index; + struct wireless_dev *wdev = wil_to_wdev(wil); + + wil_dbg_wmi(wil, "Enable vring %d\n", vri); + + if (vri >= ARRAY_SIZE(wil->vring_tx)) { + wil_err(wil, "Enable for invalid vring %d\n", vri); + return; + } + + if (wdev->iftype != NL80211_IFTYPE_AP || !disable_ap_sme) + /* in AP mode with disable_ap_sme, this is done by + * wil_cfg80211_change_station() + */ + wil->vring_tx_data[vri].dot1x_open = true; + if (vri == wil->bcast_vring) /* no BA for bcast */ + return; + if (agg_wsize >= 0) + wil_addba_tx_request(wil, vri, agg_wsize); +} + +static void wmi_evt_ba_status(struct wil6210_priv *wil, int id, void *d, + int len) +{ + struct wmi_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); +} + +/** + * Some events are ignored for purpose; and need not be interpreted as + * "unhandled events" + */ +static void wmi_evt_ignore(struct wil6210_priv *wil, int id, void *d, int len) +{ + wil_dbg_wmi(wil, "Ignore event 0x%04x len %d\n", id, len); +} + +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_ignore}, + {WMI_RX_MGMT_PACKET_EVENTID, wmi_evt_rx_mgmt}, + {WMI_TX_MGMT_PACKET_EVENTID, wmi_evt_tx_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_BA_STATUS_EVENTID, wmi_evt_ba_status}, + {WMI_RCP_ADDBA_REQ_EVENTID, wmi_evt_addba_rx_req}, + {WMI_DELBA_EVENTID, wmi_evt_delba}, + {WMI_VRING_EN_EVENTID, wmi_evt_vring_en}, + {WMI_DATA_PORT_OPEN_EVENTID, wmi_evt_ignore}, +}; + +/* + * 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; + unsigned int num_immed_reply = 0; + + if (!test_bit(wil_status_mbox_ready, wil->status)) { + wil_err(wil, "Reset in progress. Cannot handle WMI event\n"); + return; + } + + if (test_bit(wil_status_suspended, wil->status)) { + wil_err(wil, "suspended. cannot handle WMI event\n"); + return; + } + + for (n = 0;; n++) { + u16 len; + bool q; + bool immed_reply = false; + + r->head = wil_r(wil, RGF_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 */ + wil_w(wil, r->tail + + offsetof(struct wil6210_mbox_ring_desc, sync), 0); + /* indicate */ + if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) && + (len >= sizeof(struct wmi_cmd_hdr))) { + struct wmi_cmd_hdr *wmi = &evt->event.wmi; + u16 id = le16_to_cpu(wmi->command_id); + u32 tstamp = le32_to_cpu(wmi->fw_timestamp); + if (test_bit(wil_status_resuming, wil->status)) { + if (id == WMI_TRAFFIC_RESUME_EVENTID) + clear_bit(wil_status_resuming, + wil->status); + else + wil_err(wil, + "WMI evt %d while resuming\n", + id); + } + spin_lock_irqsave(&wil->wmi_ev_lock, flags); + if (wil->reply_id && wil->reply_id == id) { + if (wil->reply_buf) { + memcpy(wil->reply_buf, wmi, + min(len, wil->reply_size)); + immed_reply = true; + } + if (id == WMI_TRAFFIC_SUSPEND_EVENTID) { + wil_dbg_wmi(wil, + "set suspend_resp_rcvd\n"); + wil->suspend_resp_rcvd = true; + } + } + spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); + + 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); + wil_w(wil, RGF_MBOX + + offsetof(struct wil6210_mbox_ctl, rx.tail), r->tail); + + if (immed_reply) { + wil_dbg_wmi(wil, "recv_cmd: Complete WMI 0x%04x\n", + wil->reply_id); + kfree(evt); + num_immed_reply++; + complete(&wil->wmi_call); + } else { + /* 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, "recv_cmd: -> %d events queued, %d completed\n", + n - num_immed_reply, num_immed_reply); +} + +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; + unsigned long remain; + + mutex_lock(&wil->wmi_mutex); + + spin_lock(&wil->wmi_ev_lock); + wil->reply_id = reply_id; + wil->reply_buf = reply; + wil->reply_size = reply_size; + reinit_completion(&wil->wmi_call); + spin_unlock(&wil->wmi_ev_lock); + + rc = __wmi_send(wil, cmdid, buf, len); + if (rc) + goto out; + + 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)); + } + +out: + spin_lock(&wil->wmi_ev_lock); + wil->reply_id = 0; + wil->reply_buf = NULL; + wil->reply_size = 0; + spin_unlock(&wil->wmi_ev_lock); + + 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, 50); +} + +int wmi_set_mac_address(struct wil6210_priv *wil, void *addr) +{ + struct wmi_set_mac_address_cmd cmd; + + ether_addr_copy(cmd.mac, addr); + + wil_dbg_wmi(wil, "Set MAC %pM\n", addr); + + return wmi_send(wil, WMI_SET_MAC_ADDRESS_CMDID, &cmd, sizeof(cmd)); +} + +int wmi_led_cfg(struct wil6210_priv *wil, bool enable) +{ + int rc = 0; + struct wmi_led_cfg_cmd cmd = { + .led_mode = enable, + .id = led_id, + .slow_blink_cfg.blink_on = + cpu_to_le32(led_blink_time[WIL_LED_TIME_SLOW].on_ms), + .slow_blink_cfg.blink_off = + cpu_to_le32(led_blink_time[WIL_LED_TIME_SLOW].off_ms), + .medium_blink_cfg.blink_on = + cpu_to_le32(led_blink_time[WIL_LED_TIME_MED].on_ms), + .medium_blink_cfg.blink_off = + cpu_to_le32(led_blink_time[WIL_LED_TIME_MED].off_ms), + .fast_blink_cfg.blink_on = + cpu_to_le32(led_blink_time[WIL_LED_TIME_FAST].on_ms), + .fast_blink_cfg.blink_off = + cpu_to_le32(led_blink_time[WIL_LED_TIME_FAST].off_ms), + .led_polarity = led_polarity, + }; + struct { + struct wmi_cmd_hdr wmi; + struct wmi_led_cfg_done_event evt; + } __packed reply; + + if (led_id == WIL_LED_INVALID_ID) + goto out; + + if (led_id > WIL_LED_MAX_ID) { + wil_err(wil, "Invalid led id %d\n", led_id); + rc = -EINVAL; + goto out; + } + + wil_dbg_wmi(wil, + "%s led %d\n", + enable ? "enabling" : "disabling", led_id); + + rc = wmi_call(wil, WMI_LED_CFG_CMDID, &cmd, sizeof(cmd), + WMI_LED_CFG_DONE_EVENTID, &reply, sizeof(reply), + 100); + if (rc) + goto out; + + if (reply.evt.status) { + wil_err(wil, "led %d cfg failed with status %d\n", + led_id, le32_to_cpu(reply.evt.status)); + rc = -EINVAL; + } + +out: + return rc; +} + +int wmi_pcp_start(struct wil6210_priv *wil, int bi, u8 wmi_nettype, + u8 chan, u8 hidden_ssid, u8 is_go) +{ + 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, + .hidden_ssid = hidden_ssid, + .is_go = is_go, + .disable_ap_sme = disable_ap_sme, + .abft_len = wil->abft_len, + }; + struct { + struct wmi_cmd_hdr wmi; + struct wmi_pcp_started_event evt; + } __packed reply; + + if (!wil->privacy) + 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; + } + + if (disable_ap_sme && + !test_bit(WMI_FW_CAPABILITY_DISABLE_AP_SME, + wil->fw_capabilities)) { + wil_err(wil, "disable_ap_sme not supported by FW\n"); + return -EOPNOTSUPP; + } + + /* + * 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; + + if (wmi_nettype != WMI_NETTYPE_P2P) + /* Don't fail due to error in the led configuration */ + wmi_led_cfg(wil, true); + + return rc; +} + +int wmi_pcp_stop(struct wil6210_priv *wil) +{ + int rc; + + rc = wmi_led_cfg(wil, false); + if (rc) + return rc; + + 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 wmi_cmd_hdr 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 wmi_cmd_hdr 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, int bi) +{ + int rc; + struct wmi_p2p_cfg_cmd cmd = { + .discovery_mode = WMI_DISCOVERY_MODE_PEER2PEER, + .bcon_interval = cpu_to_le16(bi), + .channel = channel - 1, + }; + struct { + struct wmi_cmd_hdr wmi; + struct wmi_p2p_cfg_done_event evt; + } __packed reply; + + wil_dbg_wmi(wil, "sending WMI_P2P_CFG_CMDID\n"); + + rc = wmi_call(wil, WMI_P2P_CFG_CMDID, &cmd, sizeof(cmd), + WMI_P2P_CFG_DONE_EVENTID, &reply, sizeof(reply), 300); + if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) { + wil_err(wil, "P2P_CFG failed. status %d\n", reply.evt.status); + rc = -EINVAL; + } + + return rc; +} + +int wmi_start_listen(struct wil6210_priv *wil) +{ + int rc; + struct { + struct wmi_cmd_hdr wmi; + struct wmi_listen_started_event evt; + } __packed reply; + + wil_dbg_wmi(wil, "sending WMI_START_LISTEN_CMDID\n"); + + rc = wmi_call(wil, WMI_START_LISTEN_CMDID, NULL, 0, + WMI_LISTEN_STARTED_EVENTID, &reply, sizeof(reply), 300); + if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) { + wil_err(wil, "device failed to start listen. status %d\n", + reply.evt.status); + rc = -EINVAL; + } + + return rc; +} + +int wmi_start_search(struct wil6210_priv *wil) +{ + int rc; + struct { + struct wmi_cmd_hdr wmi; + struct wmi_search_started_event evt; + } __packed reply; + + wil_dbg_wmi(wil, "sending WMI_START_SEARCH_CMDID\n"); + + rc = wmi_call(wil, WMI_START_SEARCH_CMDID, NULL, 0, + WMI_SEARCH_STARTED_EVENTID, &reply, sizeof(reply), 300); + if (!rc && reply.evt.status != WMI_FW_STATUS_SUCCESS) { + wil_err(wil, "device failed to start search. status %d\n", + reply.evt.status); + rc = -EINVAL; + } + + return rc; +} + +int wmi_stop_discovery(struct wil6210_priv *wil) +{ + int rc; + + wil_dbg_wmi(wil, "sending WMI_DISCOVERY_STOP_CMDID\n"); + + rc = wmi_call(wil, WMI_DISCOVERY_STOP_CMDID, NULL, 0, + WMI_DISCOVERY_STOPPED_EVENTID, NULL, 0, 100); + + if (rc) + wil_err(wil, "Failed to stop discovery\n"); + + return rc; +} + +int wmi_del_cipher_key(struct wil6210_priv *wil, u8 key_index, + const void *mac_addr, int key_usage) +{ + 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, + int key_usage) +{ + struct wmi_add_cipher_key_cmd cmd = { + .key_index = key_index, + .key_usage = key_usage, + .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) +{ + static const char *const names[] = { + [WMI_FRAME_BEACON] = "BEACON", + [WMI_FRAME_PROBE_REQ] = "PROBE_REQ", + [WMI_FRAME_PROBE_RESP] = "WMI_FRAME_PROBE_RESP", + [WMI_FRAME_ASSOC_REQ] = "WMI_FRAME_ASSOC_REQ", + [WMI_FRAME_ASSOC_RESP] = "WMI_FRAME_ASSOC_RESP", + }; + int rc; + u16 len = sizeof(struct wmi_set_appie_cmd) + ie_len; + struct wmi_set_appie_cmd *cmd = kzalloc(len, GFP_KERNEL); + + if (!cmd) { + rc = -ENOMEM; + goto out; + } + 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); +out: + if (rc) { + const char *name = type < ARRAY_SIZE(names) ? + names[type] : "??"; + wil_err(wil, "set_ie(%d %s) failed : %d\n", type, name, rc); + } + + 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 wmi_cmd_hdr wmi; + struct wmi_listen_started_event evt; + } __packed reply; + + wil_info(wil, "(%s)\n", 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(wil->rx_buf_len)), + .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 wmi_cmd_hdr 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_BOTH_PHYS); + } 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); + } + + if (rx_align_2) + cmd.l2_802_3_offload_ctrl |= + L2_802_3_OFFLOAD_CTRL_SNAP_KEEP_MSK; + + /* 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 wmi_cmd_hdr 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, bool full_disconnect, bool del_sta) +{ + int rc; + u16 reason_code; + struct wmi_disconnect_sta_cmd disc_sta_cmd = { + .disconnect_reason = cpu_to_le16(reason), + }; + struct wmi_del_sta_cmd del_sta_cmd = { + .disconnect_reason = cpu_to_le16(reason), + }; + struct { + struct wmi_cmd_hdr wmi; + struct wmi_disconnect_event evt; + } __packed reply; + + wil_dbg_wmi(wil, "disconnect_sta: (%pM, reason %d)\n", mac, reason); + + wil->locally_generated_disc = true; + if (del_sta) { + ether_addr_copy(del_sta_cmd.dst_mac, mac); + rc = wmi_call(wil, WMI_DEL_STA_CMDID, &del_sta_cmd, + sizeof(del_sta_cmd), WMI_DISCONNECT_EVENTID, + &reply, sizeof(reply), 1000); + } else { + ether_addr_copy(disc_sta_cmd.dst_mac, mac); + rc = wmi_call(wil, WMI_DISCONNECT_STA_CMDID, &disc_sta_cmd, + sizeof(disc_sta_cmd), WMI_DISCONNECT_EVENTID, + &reply, sizeof(reply), 1000); + } + /* failure to disconnect in reasonable time treated as FW error */ + if (rc) { + wil_fw_error_recovery(wil); + return rc; + } + + if (full_disconnect) { + /* call event handler manually after processing wmi_call, + * to avoid deadlock - disconnect event handler acquires + * wil->mutex while it is already held here + */ + reason_code = le16_to_cpu(reply.evt.protocol_reason_status); + + wil_dbg_wmi(wil, "Disconnect %pM reason [proto %d wmi %d]\n", + reply.evt.bssid, reason_code, + reply.evt.disconnect_reason); + + wil->sinfo_gen++; + wil6210_disconnect(wil, reply.evt.bssid, reason_code, true); + } + return 0; +} + +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, "addba: (ring %d size %d timeout %d)\n", 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, "delba_tx: (ring %d reason %d)\n", 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, "delba_rx: (CID %d TID %d reason %d)\n", 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 wmi_cmd_hdr 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_RCP_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; +} + +int wmi_ps_dev_profile_cfg(struct wil6210_priv *wil, + enum wmi_ps_profile_type ps_profile) +{ + int rc; + struct wmi_ps_dev_profile_cfg_cmd cmd = { + .ps_profile = ps_profile, + }; + struct { + struct wmi_cmd_hdr wmi; + struct wmi_ps_dev_profile_cfg_event evt; + } __packed reply; + u32 status; + + wil_dbg_wmi(wil, "Setting ps dev profile %d\n", ps_profile); + + reply.evt.status = cpu_to_le32(WMI_PS_CFG_CMD_STATUS_ERROR); + + rc = wmi_call(wil, WMI_PS_DEV_PROFILE_CFG_CMDID, &cmd, sizeof(cmd), + WMI_PS_DEV_PROFILE_CFG_EVENTID, &reply, sizeof(reply), + 100); + if (rc) + return rc; + + status = le32_to_cpu(reply.evt.status); + + if (status != WMI_PS_CFG_CMD_STATUS_SUCCESS) { + wil_err(wil, "ps dev profile cfg failed with status %d\n", + status); + rc = -EINVAL; + } + + return rc; +} + +int wmi_set_mgmt_retry(struct wil6210_priv *wil, u8 retry_short) +{ + int rc; + struct wmi_set_mgmt_retry_limit_cmd cmd = { + .mgmt_retry_limit = retry_short, + }; + struct { + struct wmi_cmd_hdr wmi; + struct wmi_set_mgmt_retry_limit_event evt; + } __packed reply; + + wil_dbg_wmi(wil, "Setting mgmt retry short %d\n", retry_short); + + if (!test_bit(WMI_FW_CAPABILITY_MGMT_RETRY_LIMIT, wil->fw_capabilities)) + return -ENOTSUPP; + + reply.evt.status = WMI_FW_STATUS_FAILURE; + + rc = wmi_call(wil, WMI_SET_MGMT_RETRY_LIMIT_CMDID, &cmd, sizeof(cmd), + WMI_SET_MGMT_RETRY_LIMIT_EVENTID, &reply, sizeof(reply), + 100); + if (rc) + return rc; + + if (reply.evt.status != WMI_FW_STATUS_SUCCESS) { + wil_err(wil, "set mgmt retry limit failed with status %d\n", + reply.evt.status); + rc = -EINVAL; + } + + return rc; +} + +int wmi_get_mgmt_retry(struct wil6210_priv *wil, u8 *retry_short) +{ + int rc; + struct { + struct wmi_cmd_hdr wmi; + struct wmi_get_mgmt_retry_limit_event evt; + } __packed reply; + + wil_dbg_wmi(wil, "getting mgmt retry short\n"); + + if (!test_bit(WMI_FW_CAPABILITY_MGMT_RETRY_LIMIT, wil->fw_capabilities)) + return -ENOTSUPP; + + reply.evt.mgmt_retry_limit = 0; + rc = wmi_call(wil, WMI_GET_MGMT_RETRY_LIMIT_CMDID, NULL, 0, + WMI_GET_MGMT_RETRY_LIMIT_EVENTID, &reply, sizeof(reply), + 100); + if (rc) + return rc; + + if (retry_short) + *retry_short = reply.evt.mgmt_retry_limit; + + return 0; +} + +int wmi_abort_scan(struct wil6210_priv *wil) +{ + int rc; + + wil_dbg_wmi(wil, "sending WMI_ABORT_SCAN_CMDID\n"); + + rc = wmi_send(wil, WMI_ABORT_SCAN_CMDID, NULL, 0); + if (rc) + wil_err(wil, "Failed to abort scan (%d)\n", rc); + + return rc; +} + +int wmi_new_sta(struct wil6210_priv *wil, const u8 *mac, u8 aid) +{ + int rc; + struct wmi_new_sta_cmd cmd = { + .aid = aid, + }; + + wil_dbg_wmi(wil, "new sta %pM, aid %d\n", mac, aid); + + ether_addr_copy(cmd.dst_mac, mac); + + rc = wmi_send(wil, WMI_NEW_STA_CMDID, &cmd, sizeof(cmd)); + if (rc) + wil_err(wil, "Failed to send new sta (%d)\n", rc); + + return rc; +} + +void wmi_event_flush(struct wil6210_priv *wil) +{ + ulong flags; + struct pending_wmi_event *evt, *t; + + wil_dbg_wmi(wil, "event_flush\n"); + + spin_lock_irqsave(&wil->wmi_ev_lock, flags); + + list_for_each_entry_safe(evt, t, &wil->pending_wmi_ev, list) { + list_del(&evt->list); + kfree(evt); + } + + spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); +} + +int wmi_suspend(struct wil6210_priv *wil) +{ + int rc; + struct wmi_traffic_suspend_cmd cmd = { + .wakeup_trigger = wil->wakeup_trigger, + }; + struct { + struct wmi_cmd_hdr wmi; + struct wmi_traffic_suspend_event evt; + } __packed reply; + u32 suspend_to = WIL_WAIT_FOR_SUSPEND_RESUME_COMP; + + wil->suspend_resp_rcvd = false; + wil->suspend_resp_comp = false; + + reply.evt.status = WMI_TRAFFIC_SUSPEND_REJECTED; + + rc = wmi_call(wil, WMI_TRAFFIC_SUSPEND_CMDID, &cmd, sizeof(cmd), + WMI_TRAFFIC_SUSPEND_EVENTID, &reply, sizeof(reply), + suspend_to); + if (rc) { + wil_err(wil, "wmi_call for suspend req failed, rc=%d\n", rc); + if (rc == -ETIME) + /* wmi_call TO */ + wil->suspend_stats.rejected_by_device++; + else + wil->suspend_stats.rejected_by_host++; + goto out; + } + + wil_dbg_wmi(wil, "waiting for suspend_response_completed\n"); + + rc = wait_event_interruptible_timeout(wil->wq, + wil->suspend_resp_comp, + msecs_to_jiffies(suspend_to)); + if (rc == 0) { + wil_err(wil, "TO waiting for suspend_response_completed\n"); + if (wil->suspend_resp_rcvd) + /* Device responded but we TO due to another reason */ + wil->suspend_stats.rejected_by_host++; + else + wil->suspend_stats.rejected_by_device++; + rc = -EBUSY; + goto out; + } + + wil_dbg_wmi(wil, "suspend_response_completed rcvd\n"); + if (reply.evt.status == WMI_TRAFFIC_SUSPEND_REJECTED) { + wil_dbg_pm(wil, "device rejected the suspend\n"); + wil->suspend_stats.rejected_by_device++; + } + rc = reply.evt.status; + +out: + wil->suspend_resp_rcvd = false; + wil->suspend_resp_comp = false; + + return rc; +} + +int wmi_resume(struct wil6210_priv *wil) +{ + int rc; + struct { + struct wmi_cmd_hdr wmi; + struct wmi_traffic_resume_event evt; + } __packed reply; + + reply.evt.status = WMI_TRAFFIC_RESUME_FAILED; + + rc = wmi_call(wil, WMI_TRAFFIC_RESUME_CMDID, NULL, 0, + WMI_TRAFFIC_RESUME_EVENTID, &reply, sizeof(reply), + WIL_WAIT_FOR_SUSPEND_RESUME_COMP); + if (rc) + return rc; + + return reply.evt.status; +} + +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 wmi_cmd_hdr))) { + struct wmi_cmd_hdr *wmi = (void *)(&hdr[1]); + void *evt_data = (void *)(&wmi[1]); + u16 id = le16_to_cpu(wmi->command_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) { + WARN_ON(wil->reply_buf); + wmi_evt_call_handler(wil, id, evt_data, + len - sizeof(*wmi)); + wil_dbg_wmi(wil, "event_handle: 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_info(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, "event_worker: Start\n"); + 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, "event_worker: Finished\n"); +} + +bool wil_is_wmi_idle(struct wil6210_priv *wil) +{ + ulong flags; + struct wil6210_mbox_ring *r = &wil->mbox_ctl.rx; + bool rc = false; + + spin_lock_irqsave(&wil->wmi_ev_lock, flags); + + /* Check if there are pending WMI events in the events queue */ + if (!list_empty(&wil->pending_wmi_ev)) { + wil_dbg_pm(wil, "Pending WMI events in queue\n"); + goto out; + } + + /* Check if there is a pending WMI call */ + if (wil->reply_id) { + wil_dbg_pm(wil, "Pending WMI call\n"); + goto out; + } + + /* Check if there are pending RX events in mbox */ + r->head = wil_r(wil, RGF_MBOX + + offsetof(struct wil6210_mbox_ctl, rx.head)); + if (r->tail != r->head) + wil_dbg_pm(wil, "Pending WMI mbox events\n"); + else + rc = true; + +out: + spin_unlock_irqrestore(&wil->wmi_ev_lock, flags); + return rc; +} |