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path: root/drivers/net/wireless/ath/wil6210/wmi.c
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Diffstat (limited to 'drivers/net/wireless/ath/wil6210/wmi.c')
-rw-r--r--drivers/net/wireless/ath/wil6210/wmi.c975
1 files changed, 975 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 000000000000..12915f6e7617
--- /dev/null
+++ b/drivers/net/wireless/ath/wil6210/wmi.c
@@ -0,0 +1,975 @@
+/*
+ * Copyright (c) 2012 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/pci.h>
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/etherdevice.h>
+
+#include "wil6210.h"
+#include "wmi.h"
+
+/**
+ * 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
+ */
+static const struct {
+ u32 from; /* linker address - from, inclusive */
+ u32 to; /* linker address - to, exclusive */
+ u32 host; /* PCI/Host address - BAR0 + 0x880000 */
+} fw_mapping[] = {
+ {0x000000, 0x040000, 0x8c0000}, /* FW code RAM 256k */
+ {0x800000, 0x808000, 0x900000}, /* FW data RAM 32k */
+ {0x840000, 0x860000, 0x908000}, /* peripheral data RAM 128k/96k used */
+ {0x880000, 0x88a000, 0x880000}, /* various RGF */
+ {0x8c0000, 0x932000, 0x8c0000}, /* trivial mapping for upper area */
+ /*
+ * 920000..930000 ucode code RAM
+ * 930000..932000 ucode data RAM
+ */
+};
+
+/**
+ * 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 = {
+ .id = cpu_to_le16(cmdid),
+ .info1 = 0,
+ },
+ };
+ 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, "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));
+
+ /* 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 net_device *ndev = wil_to_ndev(wil);
+ struct wireless_dev *wdev = wil->wdev;
+ struct wmi_ready_event *evt = d;
+ u32 ver = le32_to_cpu(evt->sw_version);
+
+ wil_dbg_WMI(wil, "FW ver. %d; MAC %pM\n", ver, evt->mac);
+
+ if (!is_valid_ether_addr(ndev->dev_addr)) {
+ memcpy(ndev->dev_addr, evt->mac, ETH_ALEN);
+ memcpy(ndev->perm_addr, evt->mac, ETH_ALEN);
+ }
+ snprintf(wdev->wiphy->fw_version, sizeof(wdev->wiphy->fw_version),
+ "%d", ver);
+}
+
+static void wmi_evt_fw_ready(struct wil6210_priv *wil, int id, void *d,
+ int len)
+{
+ wil_dbg_WMI(wil, "WMI: FW ready\n");
+
+ set_bit(wil_status_fwready, &wil->status);
+ /* reuse wmi_ready for the firmware ready indication */
+ 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);
+ /* TODO convert LE to CPU */
+ s32 signal = 0; /* TODO */
+ __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\n",
+ data->info.channel, data->info.mcs, data->info.snr);
+ wil_dbg_WMI(wil, "status 0x%04x len %d stype %04x\n", d_status, d_len,
+ le16_to_cpu(data->info.stype));
+ 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);
+
+ bss = cfg80211_inform_bss(wiphy, channel, rx_mgmt_frame->bssid,
+ tsf, cap, bi, ie_buf, ie_len,
+ signal, GFP_KERNEL);
+ if (bss) {
+ wil_dbg_WMI(wil, "Added BSS %pM\n",
+ rx_mgmt_frame->bssid);
+ cfg80211_put_bss(bss);
+ } else {
+ wil_err(wil, "cfg80211_inform_bss() failed\n");
+ }
+ }
+}
+
+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 != 0);
+
+ wil_dbg_WMI(wil, "SCAN_COMPLETE(0x%08x)\n", data->status);
+ 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;
+ }
+ 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 (wdev->sme_state != CFG80211_SME_CONNECTING) {
+ 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;
+ sinfo.filled |= STATION_INFO_ASSOC_REQ_IES;
+ }
+
+ cfg80211_new_sta(ndev, evt->bssid, &sinfo, GFP_KERNEL);
+ }
+ 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->dst_addr[0], evt->bssid, ETH_ALEN);
+
+ wil->pending_connect_cid = evt->cid;
+ queue_work(wil->wmi_wq_conn, &wil->wmi_connect_worker);
+}
+
+static void wmi_evt_disconnect(struct wil6210_priv *wil, int id,
+ void *d, int len)
+{
+ struct wmi_disconnect_event *evt = d;
+
+ wil_dbg_WMI(wil, "Disconnect %pM reason %d proto %d wmi\n",
+ evt->bssid,
+ evt->protocol_reason_status, evt->disconnect_reason);
+
+ wil->sinfo_gen++;
+
+ wil6210_disconnect(wil, evt->bssid);
+ clear_bit(wil_status_dontscan, &wil->status);
+}
+
+static void wmi_evt_notify(struct wil6210_priv *wil, int id, void *d, int len)
+{
+ struct wmi_notify_req_done_event *evt = d;
+
+ if (len < sizeof(*evt)) {
+ wil_err(wil, "Short NOTIFY event\n");
+ return;
+ }
+
+ wil->stats.tsf = le64_to_cpu(evt->tsf);
+ wil->stats.snr = le32_to_cpu(evt->snr_val);
+ wil->stats.bf_mcs = le16_to_cpu(evt->bf_mcs);
+ wil->stats.my_rx_sector = le16_to_cpu(evt->my_rx_sector);
+ wil->stats.my_tx_sector = le16_to_cpu(evt->my_tx_sector);
+ wil->stats.peer_rx_sector = le16_to_cpu(evt->other_rx_sector);
+ wil->stats.peer_tx_sector = le16_to_cpu(evt->other_tx_sector);
+ wil_dbg_WMI(wil, "Link status, MCS %d TSF 0x%016llx\n"
+ "BF status 0x%08x SNR 0x%08x\n"
+ "Tx Tpt %d goodput %d Rx goodput %d\n"
+ "Sectors(rx:tx) my %d:%d peer %d:%d\n",
+ wil->stats.bf_mcs, wil->stats.tsf, evt->status,
+ wil->stats.snr, le32_to_cpu(evt->tx_tpt),
+ le32_to_cpu(evt->tx_goodput), le32_to_cpu(evt->rx_goodput),
+ wil->stats.my_rx_sector, wil->stats.my_tx_sector,
+ wil->stats.peer_rx_sector, wil->stats.peer_tx_sector);
+}
+
+/*
+ * 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;
+
+ wil_dbg_WMI(wil, "EAPOL len %d from %pM\n", eapol_len,
+ evt->src_mac);
+
+ 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 += skb->len;
+ } else {
+ ndev->stats.rx_dropped++;
+ }
+}
+
+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_NOTIFY_REQ_DONE_EVENTID, wmi_evt_notify},
+ {WMI_EAPOL_RX_EVENTID, wmi_evt_eapol_rx},
+};
+
+/*
+ * 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;
+
+ for (;;) {
+ u16 len;
+
+ r->head = ioread32(wil->csr + HOST_MBOX +
+ offsetof(struct wil6210_mbox_ctl, rx.head));
+ if (r->tail == r->head)
+ return;
+
+ /* read cmd 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");
+ return;
+ }
+
+ 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));
+ return;
+ }
+
+ len = le16_to_cpu(hdr.len);
+ 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) {
+ wil_err(wil, "kmalloc for WMI event (%d) failed\n",
+ len);
+ return;
+ }
+ 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 */
+ wil_dbg_WMI(wil, "Mbox evt %04x %04x %04x %02x\n",
+ le16_to_cpu(hdr.seq), len, le16_to_cpu(hdr.type),
+ hdr.flags);
+ if ((hdr.type == WIL_MBOX_HDR_TYPE_WMI) &&
+ (len >= sizeof(struct wil6210_mbox_hdr_wmi))) {
+ wil_dbg_WMI(wil, "WMI event 0x%04x\n",
+ evt->event.wmi.id);
+ }
+ 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);
+ {
+ int q = queue_work(wil->wmi_wq,
+ &wil->wmi_event_worker);
+ wil_dbg_WMI(wil, "queue_work -> %d\n", q);
+ }
+ }
+}
+
+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_ready,
+ 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_set_bcon(struct wil6210_priv *wil, int bi, u8 wmi_nettype)
+{
+ struct wmi_bcon_ctrl_cmd cmd = {
+ .bcon_interval = cpu_to_le16(bi),
+ .network_type = wmi_nettype,
+ .disable_sec_offload = 1,
+ };
+
+ if (!wil->secure_pcp)
+ cmd.disable_sec = 1;
+
+ return wmi_send(wil, WMI_BCON_CTRL_CMDID, &cmd, sizeof(cmd));
+}
+
+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_tx_eapol(struct wil6210_priv *wil, struct sk_buff *skb)
+{
+ struct wmi_eapol_tx_cmd *cmd;
+ struct ethhdr *eth;
+ u16 eapol_len = skb->len - ETH_HLEN;
+ void *eapol = skb->data + ETH_HLEN;
+ uint i;
+ int rc;
+
+ skb_set_mac_header(skb, 0);
+ eth = eth_hdr(skb);
+ wil_dbg_WMI(wil, "EAPOL %d bytes to %pM\n", eapol_len, eth->h_dest);
+ for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
+ if (memcmp(wil->dst_addr[i], eth->h_dest, ETH_ALEN) == 0)
+ goto found_dest;
+ }
+
+ return -EINVAL;
+
+ found_dest:
+ /* find out eapol data & len */
+ cmd = kzalloc(sizeof(*cmd) + eapol_len, GFP_KERNEL);
+ if (!cmd)
+ return -EINVAL;
+
+ memcpy(cmd->dst_mac, eth->h_dest, ETH_ALEN);
+ cmd->eapol_len = cpu_to_le16(eapol_len);
+ memcpy(cmd->eapol, eapol, eapol_len);
+ rc = wmi_send(wil, WMI_EAPOL_TX_CMDID, cmd, sizeof(*cmd) + eapol_len);
+ kfree(cmd);
+
+ return rc;
+}
+
+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) {
+ wil_err(wil, "kmalloc(%d) failed\n", len);
+ return -ENOMEM;
+ }
+
+ 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;
+}
+
+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);
+ /* 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_ready);
+ 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;
+
+ 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);
+ }
+}
+
+void wmi_connect_worker(struct work_struct *work)
+{
+ int rc;
+ struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
+ wmi_connect_worker);
+
+ if (wil->pending_connect_cid < 0) {
+ wil_err(wil, "No connection pending\n");
+ return;
+ }
+
+ wil_dbg_WMI(wil, "Configure for connection CID %d\n",
+ wil->pending_connect_cid);
+
+ rc = wil_vring_init_tx(wil, 0, WIL6210_TX_RING_SIZE,
+ wil->pending_connect_cid, 0);
+ wil->pending_connect_cid = -1;
+ if (rc == 0)
+ wil_link_on(wil);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-25 08:50:25 +0000