2 * Copyright (c) 2014 Redpine Signals 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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19 #include <linux/module.h>
20 #include <linux/firmware.h>
21 #include <net/rsi_91x.h>
23 #include "rsi_common.h"
27 u32 rsi_zone_enabled = /* INFO_ZONE |
37 EXPORT_SYMBOL_GPL(rsi_zone_enabled);
39 #ifdef CONFIG_RSI_COEX
40 static struct rsi_proto_ops g_proto_ops = {
41 .coex_send_pkt = rsi_coex_send_pkt,
42 .get_host_intf = rsi_get_host_intf,
43 .set_bt_context = rsi_set_bt_context,
48 * rsi_dbg() - This function outputs informational messages.
49 * @zone: Zone of interest for output message.
50 * @fmt: printf-style format for output message.
54 void rsi_dbg(u32 zone, const char *fmt, ...)
64 if (zone & rsi_zone_enabled)
68 EXPORT_SYMBOL_GPL(rsi_dbg);
70 static char *opmode_str(int oper_mode)
73 case DEV_OPMODE_WIFI_ALONE:
75 case DEV_OPMODE_BT_ALONE:
76 return "BT EDR alone";
77 case DEV_OPMODE_BT_LE_ALONE:
79 case DEV_OPMODE_BT_DUAL:
81 case DEV_OPMODE_STA_BT:
82 return "Wi-Fi STA + BT EDR";
83 case DEV_OPMODE_STA_BT_LE:
84 return "Wi-Fi STA + BT LE";
85 case DEV_OPMODE_STA_BT_DUAL:
86 return "Wi-Fi STA + BT DUAL";
87 case DEV_OPMODE_AP_BT:
88 return "Wi-Fi AP + BT EDR";
89 case DEV_OPMODE_AP_BT_DUAL:
90 return "Wi-Fi AP + BT DUAL";
96 void rsi_print_version(struct rsi_common *common)
98 rsi_dbg(ERR_ZONE, "================================================\n");
99 rsi_dbg(ERR_ZONE, "================ RSI Version Info ==============\n");
100 rsi_dbg(ERR_ZONE, "================================================\n");
101 rsi_dbg(ERR_ZONE, "FW Version\t: %d.%d.%d\n",
102 common->lmac_ver.major, common->lmac_ver.minor,
103 common->lmac_ver.release_num);
104 rsi_dbg(ERR_ZONE, "Operating mode\t: %d [%s]",
105 common->oper_mode, opmode_str(common->oper_mode));
106 rsi_dbg(ERR_ZONE, "Firmware file\t: %s", common->priv->fw_file_name);
107 rsi_dbg(ERR_ZONE, "================================================\n");
111 * rsi_prepare_skb() - This function prepares the skb.
112 * @common: Pointer to the driver private structure.
113 * @buffer: Pointer to the packet data.
114 * @pkt_len: Length of the packet.
115 * @extended_desc: Extended descriptor.
117 * Return: Successfully skb.
119 static struct sk_buff *rsi_prepare_skb(struct rsi_common *common,
124 struct sk_buff *skb = NULL;
127 if (WARN(!pkt_len, "%s: Dummy pkt received", __func__))
130 if (pkt_len > (RSI_RCV_BUFFER_LEN * 4)) {
131 rsi_dbg(ERR_ZONE, "%s: Pkt size > max rx buf size %d\n",
133 pkt_len = RSI_RCV_BUFFER_LEN * 4;
136 pkt_len -= extended_desc;
137 skb = dev_alloc_skb(pkt_len + FRAME_DESC_SZ);
141 payload_offset = (extended_desc + FRAME_DESC_SZ);
142 skb_put(skb, pkt_len);
143 memcpy((skb->data), (buffer + payload_offset), skb->len);
149 * rsi_read_pkt() - This function reads frames from the card.
150 * @common: Pointer to the driver private structure.
151 * @rx_pkt: Received pkt.
152 * @rcv_pkt_len: Received pkt length. In case of USB it is 0.
154 * Return: 0 on success, -1 on failure.
156 int rsi_read_pkt(struct rsi_common *common, u8 *rx_pkt, s32 rcv_pkt_len)
158 u8 *frame_desc = NULL, extended_desc = 0;
159 u32 index, length = 0, queueno = 0;
160 u16 actual_length = 0, offset;
161 struct sk_buff *skb = NULL;
162 #ifdef CONFIG_RSI_COEX
168 frame_desc = &rx_pkt[index];
169 actual_length = *(u16 *)&frame_desc[0];
170 offset = *(u16 *)&frame_desc[2];
172 queueno = rsi_get_queueno(frame_desc, offset);
173 length = rsi_get_length(frame_desc, offset);
175 /* Extended descriptor is valid for WLAN queues only */
176 if (queueno == RSI_WIFI_DATA_Q || queueno == RSI_WIFI_MGMT_Q)
177 extended_desc = rsi_get_extended_desc(frame_desc,
182 #ifdef CONFIG_RSI_COEX
183 if (common->coex_mode > 1)
184 rsi_coex_recv_pkt(common, frame_desc + offset);
187 rsi_mgmt_pkt_recv(common,
188 (frame_desc + offset));
191 case RSI_WIFI_DATA_Q:
192 skb = rsi_prepare_skb(common,
193 (frame_desc + offset),
199 rsi_indicate_pkt_to_os(common, skb);
202 case RSI_WIFI_MGMT_Q:
203 rsi_mgmt_pkt_recv(common, (frame_desc + offset));
206 #ifdef CONFIG_RSI_COEX
209 #define BT_RX_PKT_TYPE_OFST 14
210 #define BT_CARD_READY_IND 0x89
211 bt_pkt_type = frame_desc[offset + BT_RX_PKT_TYPE_OFST];
212 if (bt_pkt_type == BT_CARD_READY_IND) {
213 rsi_dbg(INFO_ZONE, "BT Card ready recvd\n");
214 if (rsi_bt_ops.attach(common, &g_proto_ops))
216 "Failed to attach BT module\n");
218 if (common->bt_adapter)
219 rsi_bt_ops.recv_pkt(common->bt_adapter,
220 frame_desc + offset);
226 rsi_dbg(ERR_ZONE, "%s: pkt from invalid queue: %d\n",
231 index += actual_length;
232 rcv_pkt_len -= actual_length;
233 } while (rcv_pkt_len > 0);
239 EXPORT_SYMBOL_GPL(rsi_read_pkt);
242 * rsi_tx_scheduler_thread() - This function is a kernel thread to send the
243 * packets to the device.
244 * @common: Pointer to the driver private structure.
248 static void rsi_tx_scheduler_thread(struct rsi_common *common)
250 struct rsi_hw *adapter = common->priv;
251 u32 timeout = EVENT_WAIT_FOREVER;
254 if (adapter->determine_event_timeout)
255 timeout = adapter->determine_event_timeout(adapter);
256 rsi_wait_event(&common->tx_thread.event, timeout);
257 rsi_reset_event(&common->tx_thread.event);
259 if (common->init_done)
260 rsi_core_qos_processor(common);
261 } while (atomic_read(&common->tx_thread.thread_done) == 0);
262 complete_and_exit(&common->tx_thread.completion, 0);
265 #ifdef CONFIG_RSI_COEX
266 enum rsi_host_intf rsi_get_host_intf(void *priv)
268 struct rsi_common *common = (struct rsi_common *)priv;
270 return common->priv->rsi_host_intf;
273 void rsi_set_bt_context(void *priv, void *bt_context)
275 struct rsi_common *common = (struct rsi_common *)priv;
277 common->bt_adapter = bt_context;
282 * rsi_91x_init() - This function initializes os interface operations.
283 * @oper_mode: One of DEV_OPMODE_*.
285 * Return: Pointer to the adapter structure on success, NULL on failure .
287 struct rsi_hw *rsi_91x_init(u16 oper_mode)
289 struct rsi_hw *adapter = NULL;
290 struct rsi_common *common = NULL;
293 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
297 adapter->priv = kzalloc(sizeof(*common), GFP_KERNEL);
298 if (adapter->priv == NULL) {
299 rsi_dbg(ERR_ZONE, "%s: Failed in allocation of memory\n",
304 common = adapter->priv;
305 common->priv = adapter;
308 for (ii = 0; ii < NUM_SOFT_QUEUES; ii++)
309 skb_queue_head_init(&common->tx_queue[ii]);
311 rsi_init_event(&common->tx_thread.event);
312 mutex_init(&common->mutex);
313 mutex_init(&common->tx_lock);
314 mutex_init(&common->rx_lock);
315 mutex_init(&common->tx_bus_mutex);
317 if (rsi_create_kthread(common,
319 rsi_tx_scheduler_thread,
321 rsi_dbg(ERR_ZONE, "%s: Unable to init tx thrd\n", __func__);
325 rsi_default_ps_params(adapter);
326 init_bgscan_params(common);
327 spin_lock_init(&adapter->ps_lock);
328 timer_setup(&common->roc_timer, rsi_roc_timeout, 0);
329 init_completion(&common->wlan_init_completion);
330 adapter->device_model = RSI_DEV_9113;
331 common->oper_mode = oper_mode;
333 /* Determine coex mode */
334 switch (common->oper_mode) {
335 case DEV_OPMODE_STA_BT_DUAL:
336 case DEV_OPMODE_STA_BT:
337 case DEV_OPMODE_STA_BT_LE:
338 case DEV_OPMODE_BT_ALONE:
339 case DEV_OPMODE_BT_LE_ALONE:
340 case DEV_OPMODE_BT_DUAL:
341 common->coex_mode = 2;
343 case DEV_OPMODE_AP_BT_DUAL:
344 case DEV_OPMODE_AP_BT:
345 common->coex_mode = 4;
347 case DEV_OPMODE_WIFI_ALONE:
348 common->coex_mode = 1;
351 common->oper_mode = 1;
352 common->coex_mode = 1;
354 rsi_dbg(INFO_ZONE, "%s: oper_mode = %d, coex_mode = %d\n",
355 __func__, common->oper_mode, common->coex_mode);
357 adapter->device_model = RSI_DEV_9113;
358 #ifdef CONFIG_RSI_COEX
359 if (common->coex_mode > 1) {
360 if (rsi_coex_attach(common)) {
361 rsi_dbg(ERR_ZONE, "Failed to init coex module\n");
367 common->init_done = true;
375 EXPORT_SYMBOL_GPL(rsi_91x_init);
378 * rsi_91x_deinit() - This function de-intializes os intf operations.
379 * @adapter: Pointer to the adapter structure.
383 void rsi_91x_deinit(struct rsi_hw *adapter)
385 struct rsi_common *common = adapter->priv;
388 rsi_dbg(INFO_ZONE, "%s: Performing deinit os ops\n", __func__);
390 rsi_kill_thread(&common->tx_thread);
392 for (ii = 0; ii < NUM_SOFT_QUEUES; ii++)
393 skb_queue_purge(&common->tx_queue[ii]);
395 #ifdef CONFIG_RSI_COEX
396 if (common->coex_mode > 1) {
397 if (common->bt_adapter) {
398 rsi_bt_ops.detach(common->bt_adapter);
399 common->bt_adapter = NULL;
401 rsi_coex_detach(common);
405 common->init_done = false;
408 kfree(adapter->rsi_dev);
411 EXPORT_SYMBOL_GPL(rsi_91x_deinit);
414 * rsi_91x_hal_module_init() - This function is invoked when the module is
415 * loaded into the kernel.
416 * It registers the client driver.
419 * Return: 0 on success, -1 on failure.
421 static int rsi_91x_hal_module_init(void)
423 rsi_dbg(INIT_ZONE, "%s: Module init called\n", __func__);
428 * rsi_91x_hal_module_exit() - This function is called at the time of
429 * removing/unloading the module.
430 * It unregisters the client driver.
435 static void rsi_91x_hal_module_exit(void)
437 rsi_dbg(INIT_ZONE, "%s: Module exit called\n", __func__);
440 module_init(rsi_91x_hal_module_init);
441 module_exit(rsi_91x_hal_module_exit);
442 MODULE_AUTHOR("Redpine Signals Inc");
443 MODULE_DESCRIPTION("Station driver for RSI 91x devices");
444 MODULE_VERSION("0.1");
445 MODULE_LICENSE("Dual BSD/GPL");