1 /******************************************************************************
3 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
19 ******************************************************************************/
23 #include <osdep_service.h>
24 #include <drv_types.h>
27 #define NR_RECVFRAME 256
29 #define RXFRAME_ALIGN 8
30 #define RXFRAME_ALIGN_SZ (1<<RXFRAME_ALIGN)
32 #define MAX_RXFRAME_CNT 512
33 #define MAX_RX_NUMBLKS (32)
34 #define RECVFRAME_HDR_ALIGN 128
36 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
38 #define MAX_SUBFRAME_COUNT 64
40 /* for Rx reordering buffer control */
41 struct recv_reorder_ctrl {
42 struct adapter *padapter;
44 u16 indicate_seq;/* wstart_b, init_value=0xffff */
47 struct __queue pending_recvframe_queue;
48 struct timer_list reordering_ctrl_timer;
51 struct stainfo_rxcache {
54 unsigned short tid0_rxseq;
55 unsigned short tid1_rxseq;
56 unsigned short tid2_rxseq;
57 unsigned short tid3_rxseq;
58 unsigned short tid4_rxseq;
59 unsigned short tid5_rxseq;
60 unsigned short tid6_rxseq;
61 unsigned short tid7_rxseq;
62 unsigned short tid8_rxseq;
63 unsigned short tid9_rxseq;
64 unsigned short tid10_rxseq;
65 unsigned short tid11_rxseq;
66 unsigned short tid12_rxseq;
67 unsigned short tid13_rxseq;
68 unsigned short tid14_rxseq;
69 unsigned short tid15_rxseq;
73 struct smooth_rssi_data {
74 u32 elements[100]; /* array to store values */
75 u32 index; /* index to current array to store */
76 u32 total_num; /* num of valid elements */
77 u32 total_val; /* sum of valid elements */
81 u8 update_req; /* used to indicate */
82 u8 avg_val; /* avg of valid elements */
83 u32 total_num; /* num of valid elements */
84 u32 total_val; /* sum of valid elements */
86 #define MAX_PATH_NUM_92CS 2
89 u8 SignalQuality; /* in 0-100 index. */
90 u8 RxMIMOSignalQuality[MAX_PATH_NUM_92CS]; /* EVM */
91 u8 RxMIMOSignalStrength[MAX_PATH_NUM_92CS];/* in 0~100 index */
92 s8 RxPower; /* in dBm Translate from PWdB */
93 /* Real power in dBm for this packet, no beautification and aggregation.
94 * Keep this raw info to be used for the other procedures. */
96 u8 BTRxRSSIPercentage;
97 u8 SignalStrength; /* in 0-100 index. */
98 u8 RxPwr[MAX_PATH_NUM_92CS];/* per-path's pwdb */
99 u8 RxSNR[MAX_PATH_NUM_92CS];/* per-path's SNR */
102 struct rx_pkt_attrib {
107 u8 hdrlen; /* the WLAN Header Len */
118 u8 privacy; /* in frame_ctrl field */
120 u8 encrypt; /* when 0 indicate no encrypt. when non-zero,
121 * indicate the encrypt algorith */
143 u32 MacIDValidEntry[2]; /* 64 bits present 64 entry. */
145 struct phy_info phy_info;
149 /* These definition is used for Rx packet reordering. */
150 #define SN_LESS(a, b) (((a - b) & 0x800) != 0)
151 #define SN_EQUAL(a, b) (a == b)
152 #define REORDER_WAIT_TIME (50) /* (ms) */
154 #define RECVBUFF_ALIGN_SZ 8
156 #define RXDESC_SIZE 24
157 #define RXDESC_OFFSET RXDESC_SIZE
171 accesser of recv_priv: rtw_recv_entry(dispatch / passive level);
172 recv_thread(passive) ; returnpkt(dispatch)
175 using enter_critical section to protect
179 struct __queue free_recv_queue;
180 struct __queue recv_pending_queue;
181 struct __queue uc_swdec_pending_queue;
182 u8 *pallocated_frame_buf;
184 uint free_recvframe_cnt;
185 struct adapter *adapter;
193 uint rx_largepacket_crcerr;
194 uint rx_smallpacket_crcerr;
195 uint rx_middlepacket_crcerr;
196 struct semaphore allrxreturnevt;
200 struct tasklet_struct irq_prepare_beacon_tasklet;
201 struct tasklet_struct recv_tasklet;
202 struct sk_buff_head free_recv_skb_queue;
203 struct sk_buff_head rx_skb_queue;
204 u8 *pallocated_recv_buf;
205 u8 *precv_buf; /* 4 alignment */
206 struct __queue free_recv_buf_queue;
207 u32 free_recv_buf_queue_cnt;
208 /* For display the phy informatiom */
209 u8 is_signal_dbg; /* for debug */
210 u8 signal_strength_dbg; /* for debug */
220 struct timer_list signal_stat_timer;
221 u32 signal_stat_sampling_interval;
222 struct signal_stat signal_qual_data;
223 struct signal_stat signal_strength_data;
226 #define rtw_set_signal_stat_timer(recvpriv) \
227 _set_timer(&(recvpriv)->signal_stat_timer, \
228 (recvpriv)->signal_stat_sampling_interval)
230 struct sta_recv_priv {
233 struct __queue defrag_q; /* keeping the fragment frame until defrag */
234 struct stainfo_rxcache rxcache;
238 struct list_head list;
239 spinlock_t recvbuf_lock;
241 struct adapter *adapter;
250 dma_addr_t dma_transfer_addr; /* (in) dma addr for transfer_buffer */
254 struct sk_buff *pskb;
270 len = (unsigned int )(tail - data);
273 struct recv_frame_hdr {
274 struct list_head list;
276 struct sk_buff *pkt_newalloc;
277 struct adapter *adapter;
280 struct rx_pkt_attrib attrib;
287 struct sta_info *psta;
288 /* for A-MPDU Rx reordering buffer control */
289 struct recv_reorder_ctrl *preorder_ctrl;
294 struct list_head list;
295 struct recv_frame_hdr hdr;
296 uint mem[RECVFRAME_HDR_ALIGN>>2];
300 union recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue);
301 union recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue);
302 void rtw_init_recvframe(union recv_frame *precvframe,
303 struct recv_priv *precvpriv);
304 int rtw_free_recvframe(union recv_frame *precvframe,
305 struct __queue *pfree_recv_queue);
306 #define rtw_dequeue_recvframe(queue) rtw_alloc_recvframe(queue)
307 int _rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue);
308 int rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue);
309 void rtw_free_recvframe_queue(struct __queue *pframequeue,
310 struct __queue *pfree_recv_queue);
311 u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter);
312 int rtw_enqueue_recvbuf_to_head(struct recv_buf *buf, struct __queue *queue);
313 int rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue);
314 struct recv_buf *rtw_dequeue_recvbuf(struct __queue *queue);
316 void rtw_reordering_ctrl_timeout_handler(void *pcontext);
318 static inline u8 *get_rxmem(union recv_frame *precvframe)
320 /* always return rx_head... */
321 if (precvframe == NULL)
323 return precvframe->u.hdr.rx_head;
326 static inline u8 *get_rx_status(union recv_frame *precvframe)
328 return get_rxmem(precvframe);
331 static inline u8 *get_recvframe_data(union recv_frame *precvframe)
333 /* always return rx_data */
334 if (precvframe == NULL)
337 return precvframe->u.hdr.rx_data;
340 static inline u8 *recvframe_push(union recv_frame *precvframe, int sz)
342 /* append data before rx_data */
344 /* add data to the start of recv_frame
346 * This function extends the used data area of the recv_frame at the buffer
347 * start. rx_data must be still larger than rx_head, after pushing.
349 if (precvframe == NULL)
351 precvframe->u.hdr.rx_data -= sz ;
352 if (precvframe->u.hdr.rx_data < precvframe->u.hdr.rx_head) {
353 precvframe->u.hdr.rx_data += sz;
356 precvframe->u.hdr.len += sz;
357 return precvframe->u.hdr.rx_data;
360 static inline u8 *recvframe_pull(union recv_frame *precvframe, int sz)
362 /* rx_data += sz; move rx_data sz bytes hereafter */
364 /* used for extract sz bytes from rx_data, update rx_data and return
365 * the updated rx_data to the caller */
367 if (precvframe == NULL)
369 precvframe->u.hdr.rx_data += sz;
370 if (precvframe->u.hdr.rx_data > precvframe->u.hdr.rx_tail) {
371 precvframe->u.hdr.rx_data -= sz;
374 precvframe->u.hdr.len -= sz;
375 return precvframe->u.hdr.rx_data;
378 static inline u8 *recvframe_put(union recv_frame *precvframe, int sz)
380 /* used for append sz bytes from ptr to rx_tail, update rx_tail
381 * and return the updated rx_tail to the caller */
382 /* after putting, rx_tail must be still larger than rx_end. */
384 if (precvframe == NULL)
387 precvframe->u.hdr.rx_tail += sz;
389 if (precvframe->u.hdr.rx_tail > precvframe->u.hdr.rx_end) {
390 precvframe->u.hdr.rx_tail -= sz;
393 precvframe->u.hdr.len += sz;
394 return precvframe->u.hdr.rx_tail;
397 static inline u8 *recvframe_pull_tail(union recv_frame *precvframe, int sz)
399 /* rmv data from rx_tail (by yitsen) */
401 /* used for extract sz bytes from rx_end, update rx_end and return
402 * the updated rx_end to the caller */
403 /* after pulling, rx_end must be still larger than rx_data. */
405 if (precvframe == NULL)
407 precvframe->u.hdr.rx_tail -= sz;
408 if (precvframe->u.hdr.rx_tail < precvframe->u.hdr.rx_data) {
409 precvframe->u.hdr.rx_tail += sz;
412 precvframe->u.hdr.len -= sz;
413 return precvframe->u.hdr.rx_tail;
416 static inline unsigned char *get_rxbuf_desc(union recv_frame *precvframe)
418 unsigned char *buf_desc;
420 if (precvframe == NULL)
425 static inline union recv_frame *rxmem_to_recvframe(u8 *rxmem)
427 /* due to the design of 2048 bytes alignment of recv_frame,
428 * we can reference the union recv_frame */
429 /* from any given member of recv_frame. */
430 /* rxmem indicates the any member/address in recv_frame */
432 return (union recv_frame *)(((size_t)rxmem >> RXFRAME_ALIGN) << RXFRAME_ALIGN);
435 static inline union recv_frame *pkt_to_recvframe(struct sk_buff *pkt)
438 union recv_frame *precv_frame;
439 precv_frame = rxmem_to_recvframe((unsigned char *)buf_star);
444 static inline u8 *pkt_to_recvmem(struct sk_buff *pkt)
446 /* return the rx_head */
448 union recv_frame *precv_frame = pkt_to_recvframe(pkt);
450 return precv_frame->u.hdr.rx_head;
453 static inline u8 *pkt_to_recvdata(struct sk_buff *pkt)
455 /* return the rx_data */
457 union recv_frame *precv_frame = pkt_to_recvframe(pkt);
459 return precv_frame->u.hdr.rx_data;
462 static inline int get_recvframe_len(union recv_frame *precvframe)
464 return precvframe->u.hdr.len;
467 static inline s32 translate_percentage_to_dbm(u32 sig_stren_index)
469 s32 power; /* in dBm. */
471 /* Translate to dBm (x=0.5y-95). */
472 power = (s32)((sig_stren_index + 1) >> 1);
481 void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv);
483 void mgt_dispatcher(struct adapter *padapter, union recv_frame *precv_frame);