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rtl871x_xmit.h
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1 /******************************************************************************
2  *
3  * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
4  *
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.
8  *
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
12  * more details.
13  *
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
17  *
18  * Modifications for inclusion into the Linux staging tree are
19  * Copyright(c) 2010 Larry Finger. All rights reserved.
20  *
21  * Contact information:
22  * WLAN FAE <[email protected]>
23  * Larry Finger <[email protected]>
24  *
25  ******************************************************************************/
26 #ifndef _RTL871X_XMIT_H_
27 #define _RTL871X_XMIT_H_
28 
29 #include "osdep_service.h"
30 #include "drv_types.h"
31 #include "xmit_osdep.h"
32 
33 #ifdef CONFIG_R8712_TX_AGGR
34 #define MAX_XMITBUF_SZ (16384)
35 #else
36 #define MAX_XMITBUF_SZ (2048)
37 #endif
38 
39 #define NR_XMITBUFF (4)
40 
41 #ifdef CONFIG_R8712_TX_AGGR
42 #define AGGR_NR_HIGH_BOUND (4) /*(8) */
43 #define AGGR_NR_LOW_BOUND (2)
44 #endif
45 
46 #define XMITBUF_ALIGN_SZ 512
47 #define TX_GUARD_BAND 5
48 #define MAX_NUMBLKS (1)
49 
50 /* Fixed the Big Endian bug when using the software driver encryption.*/
51 #define WEP_IV(pattrib_iv, txpn, keyidx)\
52 do { \
53  pattrib_iv[0] = txpn._byte_.TSC0;\
54  pattrib_iv[1] = txpn._byte_.TSC1;\
55  pattrib_iv[2] = txpn._byte_.TSC2;\
56  pattrib_iv[3] = ((keyidx & 0x3)<<6);\
57  txpn.val = (txpn.val == 0xffffff) ? 0 : (txpn.val+1);\
58 } while (0)
59 
60 /* Fixed the Big Endian bug when doing the Tx.
61  * The Linksys WRH54G will check this.*/
62 #define TKIP_IV(pattrib_iv, txpn, keyidx)\
63 do { \
64  pattrib_iv[0] = txpn._byte_.TSC1;\
65  pattrib_iv[1] = (txpn._byte_.TSC1 | 0x20) & 0x7f;\
66  pattrib_iv[2] = txpn._byte_.TSC0;\
67  pattrib_iv[3] = BIT(5) | ((keyidx & 0x3)<<6);\
68  pattrib_iv[4] = txpn._byte_.TSC2;\
69  pattrib_iv[5] = txpn._byte_.TSC3;\
70  pattrib_iv[6] = txpn._byte_.TSC4;\
71  pattrib_iv[7] = txpn._byte_.TSC5;\
72  txpn.val = txpn.val == 0xffffffffffffULL ? 0 : \
73  (txpn.val+1);\
74 } while (0)
75 
76 #define AES_IV(pattrib_iv, txpn, keyidx)\
77 do { \
78  pattrib_iv[0] = txpn._byte_.TSC0;\
79  pattrib_iv[1] = txpn._byte_.TSC1;\
80  pattrib_iv[2] = 0;\
81  pattrib_iv[3] = BIT(5) | ((keyidx & 0x3)<<6);\
82  pattrib_iv[4] = txpn._byte_.TSC2;\
83  pattrib_iv[5] = txpn._byte_.TSC3;\
84  pattrib_iv[6] = txpn._byte_.TSC4;\
85  pattrib_iv[7] = txpn._byte_.TSC5;\
86  txpn.val = txpn.val == 0xffffffffffffULL ? 0 : \
87  (txpn.val+1);\
88 } while (0)
89 
90 struct hw_xmit {
91  spinlock_t xmit_lock;
92  struct list_head pending;
93  struct __queue *sta_queue;
94  struct hw_txqueue *phwtxqueue;
95  sint txcmdcnt;
96  int accnt;
97 };
98 
99 struct pkt_attrib {
100  u8 type;
101  u8 subtype;
102  u8 bswenc;
103  u8 dhcp_pkt;
104 
105  u16 seqnum;
106  u16 ether_type;
107  u16 pktlen; /* the original 802.3 pkt raw_data len
108  * (not include ether_hdr data) */
109  u16 last_txcmdsz;
110 
111  u8 pkt_hdrlen; /*the original 802.3 pkt header len*/
112  u8 hdrlen; /*the WLAN Header Len*/
113  u8 nr_frags;
114  u8 ack_policy;
115  u8 mac_id;
116  u8 vcs_mode; /*virtual carrier sense method*/
117  u8 pctrl;/*per packet txdesc control enable*/
118  u8 qsel;
119 
120  u8 priority;
121  u8 encrypt; /* when 0 indicate no encrypt. when non-zero,
122  * indicate the encrypt algorithm*/
123  u8 iv_len;
124  u8 icv_len;
125  unsigned char iv[8];
126  unsigned char icv[8];
127  u8 dst[ETH_ALEN];
128  u8 src[ETH_ALEN];
129  u8 ta[ETH_ALEN];
130  u8 ra[ETH_ALEN];
131  struct sta_info *psta;
132 };
133 
134 #define WLANHDR_OFFSET 64
135 #define DATA_FRAMETAG 0x01
136 #define L2_FRAMETAG 0x02
137 #define MGNT_FRAMETAG 0x03
138 #define AMSDU_FRAMETAG 0x04
139 #define EII_FRAMETAG 0x05
140 #define IEEE8023_FRAMETAG 0x06
141 #define MP_FRAMETAG 0x07
142 #define TXAGG_FRAMETAG 0x08
143 
144 struct xmit_buf {
145  struct list_head list;
146 
147  u8 *pallocated_buf;
148  u8 *pbuf;
149  void *priv_data;
150  struct urb *pxmit_urb[8];
151  u32 aggr_nr;
152 };
153 
154 struct xmit_frame {
155  struct list_head list;
156  struct pkt_attrib attrib;
157  _pkt *pkt;
158  int frame_tag;
159  struct _adapter *padapter;
160  u8 *buf_addr;
161  struct xmit_buf *pxmitbuf;
162  u8 *mem_addr;
163  u16 sz[8];
164  struct urb *pxmit_urb[8];
165  u8 bpending[8];
166  u8 last[8];
167 };
168 
169 struct tx_servq {
170  struct list_head tx_pending;
171  struct __queue sta_pending;
172  int qcnt;
173 };
174 
175 struct sta_xmit_priv {
176  spinlock_t lock;
177  sint option;
178  sint apsd_setting; /* When bit mask is on, the associated edca
179  * queue supports APSD.*/
180  struct tx_servq be_q; /* priority == 0,3 */
181  struct tx_servq bk_q; /* priority == 1,2*/
182  struct tx_servq vi_q; /*priority == 4,5*/
183  struct tx_servq vo_q; /*priority == 6,7*/
184  struct list_head legacy_dz;
185  struct list_head apsd;
186  u16 txseq_tid[16];
187  uint sta_tx_bytes;
188  u64 sta_tx_pkts;
189  uint sta_tx_fail;
190 };
191 
192 struct hw_txqueue {
193  /*volatile*/ sint head;
194  /*volatile*/ sint tail;
195  /*volatile*/ sint free_sz; /*in units of 64 bytes*/
196  /*volatile*/ sint free_cmdsz;
197  /*volatile*/ sint txsz[8];
198  uint ff_hwaddr;
199  uint cmd_hwaddr;
200  sint ac_tag;
201 };
202 
203 struct xmit_priv {
204  spinlock_t lock;
205  struct __queue be_pending;
206  struct __queue bk_pending;
207  struct __queue vi_pending;
208  struct __queue vo_pending;
209  struct __queue bm_pending;
210  struct __queue legacy_dz_queue;
211  struct __queue apsd_queue;
212  u8 *pallocated_frame_buf;
213  u8 *pxmit_frame_buf;
214  uint free_xmitframe_cnt;
215  uint mapping_addr;
216  uint pkt_sz;
217  struct __queue free_xmit_queue;
218  struct hw_txqueue be_txqueue;
219  struct hw_txqueue bk_txqueue;
220  struct hw_txqueue vi_txqueue;
221  struct hw_txqueue vo_txqueue;
222  struct hw_txqueue bmc_txqueue;
223  uint frag_len;
224  struct _adapter *adapter;
225  u8 vcs_setting;
226  u8 vcs;
227  u8 vcs_type;
228  u16 rts_thresh;
229  uint tx_bytes;
230  u64 tx_pkts;
231  uint tx_drop;
232  struct hw_xmit *hwxmits;
233  u8 hwxmit_entry;
234  u8 txirp_cnt;
235  struct tasklet_struct xmit_tasklet;
236  _workitem xmit_pipe4_reset_wi;
237  _workitem xmit_pipe6_reset_wi;
238  _workitem xmit_piped_reset_wi;
239  /*per AC pending irp*/
240  int beq_cnt;
241  int bkq_cnt;
242  int viq_cnt;
243  int voq_cnt;
244  struct __queue free_amsdu_xmit_queue;
245  u8 *pallocated_amsdu_frame_buf;
246  u8 *pxmit_amsdu_frame_buf;
247  uint free_amsdu_xmitframe_cnt;
248  struct __queue free_txagg_xmit_queue;
249  u8 *pallocated_txagg_frame_buf;
250  u8 *pxmit_txagg_frame_buf;
251  uint free_txagg_xmitframe_cnt;
252  int cmdseq;
253  struct __queue free_xmitbuf_queue;
254  struct __queue pending_xmitbuf_queue;
255  u8 *pallocated_xmitbuf;
256  u8 *pxmitbuf;
257  uint free_xmitbuf_cnt;
258 };
259 
260 static inline struct __queue *get_free_xmit_queue(
261  struct xmit_priv *pxmitpriv)
262 {
263  return &(pxmitpriv->free_xmit_queue);
264 }
265 
266 int r8712_free_xmitbuf(struct xmit_priv *pxmitpriv,
267  struct xmit_buf *pxmitbuf);
268 struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv);
269 void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len);
270 struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv);
271 void r8712_free_xmitframe(struct xmit_priv *pxmitpriv,
272  struct xmit_frame *pxmitframe);
273 void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv,
274  struct __queue *pframequeue);
275 sint r8712_xmit_classifier(struct _adapter *padapter,
276  struct xmit_frame *pxmitframe);
277 sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt,
278  struct xmit_frame *pxmitframe);
279 sint _r8712_init_hw_txqueue(struct hw_txqueue *phw_txqueue, u8 ac_tag);
280 void _r8712_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv);
281 sint r8712_update_attrib(struct _adapter *padapter, _pkt *pkt,
282  struct pkt_attrib *pattrib);
283 int r8712_txframes_sta_ac_pending(struct _adapter *padapter,
284  struct pkt_attrib *pattrib);
285 sint _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv,
286  struct _adapter *padapter);
287 void _free_xmit_priv(struct xmit_priv *pxmitpriv);
288 void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv,
289  struct xmit_frame *pxmitframe);
290 int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe);
291 int r8712_xmit_enqueue(struct _adapter *padapter,
292  struct xmit_frame *pxmitframe);
293 int r8712_xmit_direct(struct _adapter *padapter, struct xmit_frame *pxmitframe);
294 void r8712_xmit_bh(void *priv);
295 
296 void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
297  struct xmit_buf *pxmitbuf);
298 
299 #include "rtl8712_xmit.h"
300 
301 #endif /*_RTL871X_XMIT_H_*/
302 
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