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 wmi_set_ssid(wil
, wdev
->ssid_len
, wdev
->ssid
);
348 wmi_set_channel(wil
, channel
->hw_value
);
354 /* MAC address - pre-requisite for other commands */
355 wmi_set_mac_address(wil
, ndev
->dev_addr
);
357 /* Set up beaconing if required. */
358 rc
= wmi_set_bcon(wil
, bi
, wmi_nettype
);
362 /* Rx VRING. After MAC and beacon */
368 int wil_up(struct wil6210_priv
*wil
)
372 mutex_lock(&wil
->mutex
);
374 mutex_unlock(&wil
->mutex
);
379 static int __wil_down(struct wil6210_priv
*wil
)
381 if (wil
->scan_request
) {
382 cfg80211_scan_done(wil
->scan_request
, true);
383 wil
->scan_request
= NULL
;
386 wil6210_disconnect(wil
, NULL
);
392 int wil_down(struct wil6210_priv
*wil
)
396 mutex_lock(&wil
->mutex
);
397 rc
= __wil_down(wil
);
398 mutex_unlock(&wil
->mutex
);