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>
23 * Due to a hardware issue,
24 * one has to read/write to/from NIC in 32-bit chunks;
25 * regular memcpy_fromio and siblings will
26 * not work on 64-bit platform - it uses 64-bit transactions
28 * Force 32-bit transactions to enable NIC on 64-bit platforms
30 * To avoid byte swap on big endian host, __raw_{read|write}l
31 * should be used - {read|write}l would swap bytes to provide
32 * little endian on PCI value in host endianness.
34 void wil_memcpy_fromio_32(void *dst, const volatile void __iomem *src,
38 const volatile u32 __iomem *s = src;
40 /* size_t is unsigned, if (count%4 != 0) it will wrap */
41 for (count += 4; count > 4; count -= 4)
42 *d++ = __raw_readl(s++);
45 void wil_memcpy_toio_32(volatile void __iomem *dst, const void *src,
48 volatile u32 __iomem *d = dst;
51 for (count += 4; count > 4; count -= 4)
52 __raw_writel(*s++, d++);
55 static void _wil6210_disconnect(struct wil6210_priv *wil, void *bssid)
58 struct net_device *ndev = wil_to_ndev(wil);
59 struct wireless_dev *wdev = wil->wdev;
61 wil_dbg_misc(wil, "%s()\n", __func__);
64 clear_bit(wil_status_fwconnected, &wil->status);
66 switch (wdev->sme_state) {
67 case CFG80211_SME_CONNECTED:
68 cfg80211_disconnected(ndev, WLAN_STATUS_UNSPECIFIED_FAILURE,
71 case CFG80211_SME_CONNECTING:
72 cfg80211_connect_result(ndev, bssid, NULL, 0, NULL, 0,
73 WLAN_STATUS_UNSPECIFIED_FAILURE,
80 for (i = 0; i < ARRAY_SIZE(wil->vring_tx); i++)
81 wil_vring_fini_tx(wil, i);
83 clear_bit(wil_status_dontscan, &wil->status);
86 static void wil_disconnect_worker(struct work_struct *work)
88 struct wil6210_priv *wil = container_of(work,
89 struct wil6210_priv, disconnect_worker);
91 _wil6210_disconnect(wil, NULL);
94 static void wil_connect_timer_fn(ulong x)
96 struct wil6210_priv *wil = (void *)x;
98 wil_dbg_misc(wil, "Connect timeout\n");
100 /* reschedule to thread context - disconnect won't
101 * run from atomic context
103 schedule_work(&wil->disconnect_worker);
106 static void wil_connect_worker(struct work_struct *work)
109 struct wil6210_priv *wil = container_of(work, struct wil6210_priv,
111 int cid = wil->pending_connect_cid;
114 wil_err(wil, "No connection pending\n");
118 wil_dbg_wmi(wil, "Configure for connection CID %d\n", cid);
120 rc = wil_vring_init_tx(wil, 0, WIL6210_TX_RING_SIZE, cid, 0);
121 wil->pending_connect_cid = -1;
126 int wil_priv_init(struct wil6210_priv *wil)
128 wil_dbg_misc(wil, "%s()\n", __func__);
130 mutex_init(&wil->mutex);
131 mutex_init(&wil->wmi_mutex);
133 init_completion(&wil->wmi_ready);
135 wil->pending_connect_cid = -1;
136 setup_timer(&wil->connect_timer, wil_connect_timer_fn, (ulong)wil);
138 INIT_WORK(&wil->connect_worker, wil_connect_worker);
139 INIT_WORK(&wil->disconnect_worker, wil_disconnect_worker);
140 INIT_WORK(&wil->wmi_event_worker, wmi_event_worker);
142 INIT_LIST_HEAD(&wil->pending_wmi_ev);
143 spin_lock_init(&wil->wmi_ev_lock);
145 wil->wmi_wq = create_singlethread_workqueue(WIL_NAME"_wmi");
149 wil->wmi_wq_conn = create_singlethread_workqueue(WIL_NAME"_connect");
150 if (!wil->wmi_wq_conn) {
151 destroy_workqueue(wil->wmi_wq);
158 void wil6210_disconnect(struct wil6210_priv *wil, void *bssid)
160 del_timer_sync(&wil->connect_timer);
161 _wil6210_disconnect(wil, bssid);
164 void wil_priv_deinit(struct wil6210_priv *wil)
166 cancel_work_sync(&wil->disconnect_worker);
167 wil6210_disconnect(wil, NULL);
168 wmi_event_flush(wil);
169 destroy_workqueue(wil->wmi_wq_conn);
170 destroy_workqueue(wil->wmi_wq);
173 static void wil_target_reset(struct wil6210_priv *wil)
175 wil_dbg_misc(wil, "Resetting...\n");
178 #define W(a, v) iowrite32(v, wil->csr + HOSTADDR(a))
179 /* register set = read, OR, write */
180 #define S(a, v) iowrite32(ioread32(wil->csr + HOSTADDR(a)) | v, \
181 wil->csr + HOSTADDR(a))
183 /* hpal_perst_from_pad_src_n_mask */
184 S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(6));
185 /* car_perst_rst_src_n_mask */
186 S(RGF_USER_CLKS_CTL_SW_RST_MASK_0, BIT(7));
188 W(RGF_USER_MAC_CPU_0, BIT(1)); /* mac_cpu_man_rst */
189 W(RGF_USER_USER_CPU_0, BIT(1)); /* user_cpu_man_rst */
191 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0xFE000000);
192 W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0x0000003F);
193 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000170);
194 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0xFFE7FC00);
196 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0);
197 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0);
198 W(RGF_USER_CLKS_CTL_SW_RST_VEC_1, 0);
199 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
201 W(RGF_USER_CLKS_CTL_SW_RST_VEC_3, 0x00000001);
202 W(RGF_USER_CLKS_CTL_SW_RST_VEC_2, 0x00000080);
203 W(RGF_USER_CLKS_CTL_SW_RST_VEC_0, 0);
205 wil_dbg_misc(wil, "Reset completed\n");
211 void wil_mbox_ring_le2cpus(struct wil6210_mbox_ring *r)
213 le32_to_cpus(&r->base);
214 le16_to_cpus(&r->entry_size);
215 le16_to_cpus(&r->size);
216 le32_to_cpus(&r->tail);
217 le32_to_cpus(&r->head);
220 static int wil_wait_for_fw_ready(struct wil6210_priv *wil)
222 ulong to = msecs_to_jiffies(1000);
223 ulong left = wait_for_completion_timeout(&wil->wmi_ready, to);
225 wil_err(wil, "Firmware not ready\n");
228 wil_dbg_misc(wil, "FW ready after %d ms\n",
229 jiffies_to_msecs(to-left));
235 * We reset all the structures, and we reset the UMAC.
236 * After calling this routine, you're expected to reload
239 int wil_reset(struct wil6210_priv *wil)
243 cancel_work_sync(&wil->disconnect_worker);
244 wil6210_disconnect(wil, NULL);
246 wil6210_disable_irq(wil);
249 wmi_event_flush(wil);
251 flush_workqueue(wil->wmi_wq_conn);
252 flush_workqueue(wil->wmi_wq);
254 /* TODO: put MAC in reset */
255 wil_target_reset(wil);
257 /* init after reset */
258 wil->pending_connect_cid = -1;
259 INIT_COMPLETION(wil->wmi_ready);
261 /* TODO: release MAC reset */
262 wil6210_enable_irq(wil);
264 /* we just started MAC, wait for FW ready */
265 rc = wil_wait_for_fw_ready(wil);
271 void wil_link_on(struct wil6210_priv *wil)
273 struct net_device *ndev = wil_to_ndev(wil);
275 wil_dbg_misc(wil, "%s()\n", __func__);
277 netif_carrier_on(ndev);
278 netif_tx_wake_all_queues(ndev);
281 void wil_link_off(struct wil6210_priv *wil)
283 struct net_device *ndev = wil_to_ndev(wil);
285 wil_dbg_misc(wil, "%s()\n", __func__);
287 netif_tx_stop_all_queues(ndev);
288 netif_carrier_off(ndev);
291 static int __wil_up(struct wil6210_priv *wil)
293 struct net_device *ndev = wil_to_ndev(wil);
294 struct wireless_dev *wdev = wil->wdev;
295 struct ieee80211_channel *channel = wdev->preset_chandef.chan;
298 u16 wmi_nettype = wil_iftype_nl2wmi(wdev->iftype);
304 /* FIXME Firmware works now in PBSS mode(ToDS=0, FromDS=0) */
305 wmi_nettype = wil_iftype_nl2wmi(NL80211_IFTYPE_ADHOC);
306 switch (wdev->iftype) {
307 case NL80211_IFTYPE_STATION:
308 wil_dbg_misc(wil, "type: STATION\n");
310 ndev->type = ARPHRD_ETHER;
312 case NL80211_IFTYPE_AP:
313 wil_dbg_misc(wil, "type: AP\n");
315 ndev->type = ARPHRD_ETHER;
317 case NL80211_IFTYPE_P2P_CLIENT:
318 wil_dbg_misc(wil, "type: P2P_CLIENT\n");
320 ndev->type = ARPHRD_ETHER;
322 case NL80211_IFTYPE_P2P_GO:
323 wil_dbg_misc(wil, "type: P2P_GO\n");
325 ndev->type = ARPHRD_ETHER;
327 case NL80211_IFTYPE_MONITOR:
328 wil_dbg_misc(wil, "type: Monitor\n");
330 ndev->type = ARPHRD_IEEE80211_RADIOTAP;
331 /* ARPHRD_IEEE80211 or ARPHRD_IEEE80211_RADIOTAP ? */
337 /* Apply profile in the following order: */
338 /* SSID and channel for the AP */
339 switch (wdev->iftype) {
340 case NL80211_IFTYPE_AP:
341 case NL80211_IFTYPE_P2P_GO:
342 if (wdev->ssid_len == 0) {
343 wil_err(wil, "SSID not set\n");
346 rc = wmi_set_ssid(wil, wdev->ssid_len, wdev->ssid);
354 /* MAC address - pre-requisite for other commands */
355 wmi_set_mac_address(wil, ndev->dev_addr);
357 /* Set up beaconing if required. */
359 rc = wmi_pcp_start(wil, bi, wmi_nettype,
360 (channel ? channel->hw_value : 0));
365 /* Rx VRING. After MAC and beacon */
371 int wil_up(struct wil6210_priv *wil)
375 mutex_lock(&wil->mutex);
377 mutex_unlock(&wil->mutex);
382 static int __wil_down(struct wil6210_priv *wil)
384 if (wil->scan_request) {
385 cfg80211_scan_done(wil->scan_request, true);
386 wil->scan_request = NULL;
389 wil6210_disconnect(wil, NULL);
395 int wil_down(struct wil6210_priv *wil)
399 mutex_lock(&wil->mutex);
400 rc = __wil_down(wil);
401 mutex_unlock(&wil->mutex);