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_USER_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_PCIE_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_PCIE_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
)) {