2 * Copyright (c) 2012 Qualcomm Atheros, Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <linux/moduleparam.h>
18 #include <linux/if_arp.h>
19 #include <linux/etherdevice.h>
25 * Due to a hardware issue,
26 * one has to read/write to/from NIC in 32-bit chunks;
27 * regular memcpy_fromio and siblings will
28 * not work on 64-bit platform - it uses 64-bit transactions
30 * Force 32-bit transactions to enable NIC on 64-bit platforms
32 * To avoid byte swap on big endian host, __raw_{read|write}l
33 * should be used - {read|write}l would swap bytes to provide
34 * little endian on PCI value in host endianness.
36 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src,
40 const volatile u32 __iomem *s = src;
42 /* size_t is unsigned, if (count%4 != 0) it will wrap */
43 for (count += 4; count > 4; count -= 4)
44 *d++ = __raw_readl(s++);
47 void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src,
50 volatile u32 __iomem *d = dst;
53 for (count += 4; count > 4; count -= 4)
54 __raw_writel(*s++, d++);
57 static void wil_disconnect_cid(struct wil6210_priv *wil, int cid)
60 struct wil_sta_info *sta = &wil->sta[cid];
62 sta->data_port_open = false;
63 if (sta->status != wil_sta_unused) {
64 wmi_disconnect_sta(wil, sta->addr, WLAN_REASON_DEAUTH_LEAVING);
65 sta->status = wil_sta_unused;
68 for (i = 0; i < WIL_STA_TID_NUM; i++) {
69 struct wil_tid_ampdu_rx *r = sta->tid_rx[i];
70 sta->tid_rx[i] = NULL;
71 wil_tid_ampdu_rx_free(wil, r);
73 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++) {
74 if (wil->vring2cid_tid[i][0] == cid)
75 wil_vring_fini_tx(wil, i);
77 memset(&sta->stats, 0, sizeof(sta->stats));
80 static void _wil6210_disconnect(struct wil6210_priv *wil, void *bssid)
83 struct net_device *ndev = wil_to_ndev(wil);
84 struct wireless_dev *wdev = wil->wdev;
88 cid = wil_find_cid(wil, bssid);
89 wil_dbg_misc(wil, "%s(%pM, CID %d)\n", __func__, bssid, cid);
91 wil_dbg_misc(wil, "%s(all)\n", __func__);
94 if (cid >= 0) /* disconnect 1 peer */
95 wil_disconnect_cid(wil, cid);
96 else /* disconnect all */
97 for (cid = 0; cid < WIL6210_MAX_CID; cid++)
98 wil_disconnect_cid(wil, cid);
101 switch (wdev->iftype) {
102 case NL80211_IFTYPE_STATION:
103 case NL80211_IFTYPE_P2P_CLIENT:
105 if (test_bit(wil_status_fwconnected, &wil->status)) {
106 clear_bit(wil_status_fwconnected, &wil->status);
107 cfg80211_disconnected(ndev,
108 WLAN_STATUS_UNSPECIFIED_FAILURE,
109 NULL, 0, GFP_KERNEL);
110 } else if (test_bit(wil_status_fwconnecting, &wil->status)) {
111 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0,
112 WLAN_STATUS_UNSPECIFIED_FAILURE,
115 clear_bit(wil_status_fwconnecting, &wil->status);
118 /* AP-like interface and monitor:
119 * never scan, always connected
122 cfg80211_del_sta(ndev, bssid, GFP_KERNEL);
127 static void wil_disconnect_worker(struct work_struct *work)
129 struct wil6210_priv *wil = container_of(work,
130 struct wil6210_priv, disconnect_worker);
132 _wil6210_disconnect(wil, NULL);
135 static void wil_connect_timer_fn(ulong x)
137 struct wil6210_priv *wil = (void *)x;
139 wil_dbg_misc(wil, "Connect timeout\n");
141 /* reschedule to thread context - disconnect won't
142 * run from atomic context
144 schedule_work(&wil->disconnect_worker);
147 static int wil_find_free_vring(struct wil6210_priv *wil)
150 for (i = 0; i < WIL6210_MAX_TX_RINGS; i++) {
151 if (!wil->vring_tx[i].va)
157 static void wil_connect_worker(struct work_struct *work)
160 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
162 int cid = wil->pending_connect_cid;
163 int ringid = wil_find_free_vring(wil);
166 wil_err(wil, "No connection pending\n");
170 wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid);
172 rc = wil_vring_init_tx(wil, ringid, WIL6210_TX_RING_SIZE, cid, 0);
173 wil->pending_connect_cid = -1;
175 wil->sta[cid].status = wil_sta_connected;
178 wil->sta[cid].status = wil_sta_unused;
182 int wil_priv_init(struct wil6210_priv *wil)
184 wil_dbg_misc(wil, "%s()\n", __func__);
186 memset(wil->sta, 0, sizeof(wil->sta));
188 mutex_init(&wil->mutex);
189 mutex_init(&wil->wmi_mutex);
191 init_completion(&wil->wmi_ready);
193 wil->pending_connect_cid = -1;
194 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil);
196 INIT_WORK(&wil->connect_worker, wil_connect_worker);
197 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker);
198 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker);
200 INIT_LIST_HEAD(&wil->pending_wmi_ev);
201 spin_lock_init(&wil->wmi_ev_lock);
203 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME"_wmi");
207 wil->wmi_wq_conn = create_singlethread_workqueue(WIL_NAME"_connect");
208 if (!wil->wmi_wq_conn) {
209 destroy_workqueue(wil->wmi_wq);
216 void wil6210_disconnect(struct wil6210_priv *wil, void *bssid)
218 del_timer_sync(&wil->connect_timer);
219 _wil6210_disconnect(wil, bssid);
222 void wil_priv_deinit(struct wil6210_priv *wil)
224 cancel_work_sync(&wil->disconnect_worker);
225 wil6210_disconnect(wil, NULL);
226 wmi_event_flush(wil);
227 destroy_workqueue(wil->wmi_wq_conn);
228 destroy_workqueue(wil->wmi_wq);
231 static void wil_target_reset(struct wil6210_priv *wil)
237 wil_dbg_misc(wil, "Resetting...\n");
240 #define R(a) ioread32(wil->csr + HOSTADDR(a))
242 #define W(a, v) iowrite32(v, wil->csr + HOSTADDR(a))
243 /* register set = read, OR, write */
244 #define S(a, v) iowrite32(ioread32(wil->csr + HOSTADDR(a)) | v, \
245 wil->csr + HOSTADDR(a))
247 wil->hw_version = R(RGF_FW_REV_ID);
248 rev_id = wil->hw_version & 0xff;
249 /* hpal_perst_from_pad_src_n_mask */
250 S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(6));
251 /* car_perst_rst_src_n_mask */
252 S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(7));
254 W(RGF_USER_MAC_CPU_0, BIT(1)); /* mac_cpu_man_rst */
255 W(RGF_USER_USER_CPU_0, BIT(1)); /* user_cpu_man_rst */
257 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000);
258 W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F);
259 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000170);
260 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FC00);
262 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0);
263 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0);
264 W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0);
265 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
267 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000001);
269 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00000080);
271 W(RGF_LOS_COUNTER_CTL, BIT(6) | BIT(8));
272 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00008000);
274 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
276 /* wait until device ready. Use baud rate */
279 baud_rate = R(RGF_USER_SERIAL_BAUD_RATE);
281 wil_err(wil, "Reset not completed\n");
284 } while (baud_rate != 0x15e);
287 W(RGF_LOS_COUNTER_CTL, BIT(8));
289 wil_dbg_misc(wil, "Reset completed in %d ms\n", delay);
296 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r)
298 le32_to_cpus(&r->base);
299 le16_to_cpus(&r->entry_size);
300 le16_to_cpus(&r->size);
301 le32_to_cpus(&r->tail);
302 le32_to_cpus(&r->head);
305 static int wil_wait_for_fw_ready(struct wil6210_priv *wil)
307 ulong to = msecs_to_jiffies(1000);
308 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to);
310 wil_err(wil, "Firmware not ready\n");
313 wil_dbg_misc(wil, "FW ready after %d ms\n",
314 jiffies_to_msecs(to-left));
320 * We reset all the structures, and we reset the UMAC.
321 * After calling this routine, you're expected to reload
324 int wil_reset(struct wil6210_priv *wil)
328 cancel_work_sync(&wil->disconnect_worker);
329 wil6210_disconnect(wil, NULL);
331 wil6210_disable_irq(wil);
334 wmi_event_flush(wil);
336 flush_workqueue(wil->wmi_wq_conn);
337 flush_workqueue(wil->wmi_wq);
339 /* TODO: put MAC in reset */
340 wil_target_reset(wil);
342 /* init after reset */
343 wil->pending_connect_cid = -1;
344 reinit_completion(&wil->wmi_ready);
346 /* TODO: release MAC reset */
347 wil6210_enable_irq(wil);
349 /* we just started MAC, wait for FW ready */
350 rc = wil_wait_for_fw_ready(wil);
356 void wil_link_on(struct wil6210_priv *wil)
358 struct net_device *ndev = wil_to_ndev(wil);
360 wil_dbg_misc(wil, "%s()\n", __func__);
362 netif_carrier_on(ndev);
363 netif_tx_wake_all_queues(ndev);
366 void wil_link_off(struct wil6210_priv *wil)
368 struct net_device *ndev = wil_to_ndev(wil);
370 wil_dbg_misc(wil, "%s()\n", __func__);
372 netif_tx_stop_all_queues(ndev);
373 netif_carrier_off(ndev);
376 static int __wil_up(struct wil6210_priv *wil)
378 struct net_device *ndev = wil_to_ndev(wil);
379 struct wireless_dev *wdev = wil->wdev;
386 /* Rx VRING. After MAC and beacon */
387 rc = wil_rx_init(wil);
391 switch (wdev->iftype) {
392 case NL80211_IFTYPE_STATION:
393 wil_dbg_misc(wil, "type: STATION\n");
394 ndev->type = ARPHRD_ETHER;
396 case NL80211_IFTYPE_AP:
397 wil_dbg_misc(wil, "type: AP\n");
398 ndev->type = ARPHRD_ETHER;
400 case NL80211_IFTYPE_P2P_CLIENT:
401 wil_dbg_misc(wil, "type: P2P_CLIENT\n");
402 ndev->type = ARPHRD_ETHER;
404 case NL80211_IFTYPE_P2P_GO:
405 wil_dbg_misc(wil, "type: P2P_GO\n");
406 ndev->type = ARPHRD_ETHER;
408 case NL80211_IFTYPE_MONITOR:
409 wil_dbg_misc(wil, "type: Monitor\n");
410 ndev->type = ARPHRD_IEEE80211_RADIOTAP;
411 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */
417 /* MAC address - pre-requisite for other commands */
418 wmi_set_mac_address(wil, ndev->dev_addr);
421 napi_enable(&wil->napi_rx);
422 napi_enable(&wil->napi_tx);
427 int wil_up(struct wil6210_priv *wil)
431 mutex_lock(&wil->mutex);
433 mutex_unlock(&wil->mutex);
438 static int __wil_down(struct wil6210_priv *wil)
440 napi_disable(&wil->napi_rx);
441 napi_disable(&wil->napi_tx);
443 if (wil->scan_request) {
444 cfg80211_scan_done(wil->scan_request, true);
445 wil->scan_request = NULL;
448 wil6210_disconnect(wil, NULL);
454 int wil_down(struct wil6210_priv *wil)
458 mutex_lock(&wil->mutex);
459 rc = __wil_down(wil);
460 mutex_unlock(&wil->mutex);
465 int wil_find_cid(struct wil6210_priv *wil, const u8 *mac)
470 for (i = 0; i < ARRAY_SIZE(wil->sta); i++) {
471 if ((wil->sta[i].status != wil_sta_unused) &&
472 ether_addr_equal(wil->sta[i].addr, mac)) {