1 /*
2 * Copyright (c) 2013 Eugene Krasnikov <k.eugene.e@gmail.com>
3 *
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.
7 *
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 ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #ifndef _WCN36XX_H_
18 #define _WCN36XX_H_
19
20 #include <linux/completion.h>
21 #include <linux/printk.h>
22 #include <linux/spinlock.h>
23 #include <net/mac80211.h>
24
25 #include "hal.h"
26 #include "smd.h"
27 #include "txrx.h"
28 #include "dxe.h"
29 #include "pmc.h"
30 #include "debug.h"
31
32 #define WLAN_NV_FILE "wlan/prima/WCNSS_qcom_wlan_nv.bin"
33 #define WCN36XX_AGGR_BUFFER_SIZE 64
34
35 /* How many frames until we start a-mpdu TX session */
36 #define WCN36XX_AMPDU_START_THRESH 20
37
38 #define WCN36XX_MAX_SCAN_SSIDS 9
39 #define WCN36XX_MAX_SCAN_IE_LEN 500
40
41 extern unsigned int wcn36xx_dbg_mask;
42
43 enum wcn36xx_debug_mask {
44 WCN36XX_DBG_DXE = 0x00000001,
45 WCN36XX_DBG_DXE_DUMP = 0x00000002,
46 WCN36XX_DBG_SMD = 0x00000004,
47 WCN36XX_DBG_SMD_DUMP = 0x00000008,
48 WCN36XX_DBG_RX = 0x00000010,
49 WCN36XX_DBG_RX_DUMP = 0x00000020,
50 WCN36XX_DBG_TX = 0x00000040,
51 WCN36XX_DBG_TX_DUMP = 0x00000080,
52 WCN36XX_DBG_HAL = 0x00000100,
53 WCN36XX_DBG_HAL_DUMP = 0x00000200,
54 WCN36XX_DBG_MAC = 0x00000400,
55 WCN36XX_DBG_BEACON = 0x00000800,
56 WCN36XX_DBG_BEACON_DUMP = 0x00001000,
57 WCN36XX_DBG_PMC = 0x00002000,
58 WCN36XX_DBG_PMC_DUMP = 0x00004000,
59 WCN36XX_DBG_ANY = 0xffffffff,
60 };
61
62 #define wcn36xx_err(fmt, arg...) \
63 printk(KERN_ERR pr_fmt("ERROR " fmt), ##arg)
64
65 #define wcn36xx_warn(fmt, arg...) \
66 printk(KERN_WARNING pr_fmt("WARNING " fmt), ##arg)
67
68 #define wcn36xx_info(fmt, arg...) \
69 printk(KERN_INFO pr_fmt(fmt), ##arg)
70
71 #define wcn36xx_dbg(mask, fmt, arg...) do { \
72 if (wcn36xx_dbg_mask & mask) \
73 printk(KERN_DEBUG pr_fmt(fmt), ##arg); \
74 } while (0)
75
76 #define wcn36xx_dbg_dump(mask, prefix_str, buf, len) do { \
77 if (wcn36xx_dbg_mask & mask) \
78 print_hex_dump(KERN_DEBUG, pr_fmt(prefix_str), \
79 DUMP_PREFIX_OFFSET, 32, 1, \
80 buf, len, false); \
81 } while (0)
82
83 enum wcn36xx_ampdu_state {
84 WCN36XX_AMPDU_NONE,
85 WCN36XX_AMPDU_INIT,
86 WCN36XX_AMPDU_START,
87 WCN36XX_AMPDU_OPERATIONAL,
88 };
89
90 #define WCN36XX_HW_CHANNEL(__wcn) (__wcn->hw->conf.chandef.chan->hw_value)
91 #define WCN36XX_BAND(__wcn) (__wcn->hw->conf.chandef.chan->band)
92 #define WCN36XX_CENTER_FREQ(__wcn) (__wcn->hw->conf.chandef.chan->center_freq)
93 #define WCN36XX_LISTEN_INTERVAL(__wcn) (__wcn->hw->conf.listen_interval)
94 #define WCN36XX_FLAGS(__wcn) (__wcn->hw->flags)
95 #define WCN36XX_MAX_POWER(__wcn) (__wcn->hw->conf.chandef.chan->max_power)
96
buff_to_be(u32 * buf,size_t len)97 static inline void buff_to_be(u32 *buf, size_t len)
98 {
99 int i;
100 for (i = 0; i < len; i++)
101 buf[i] = cpu_to_be32(buf[i]);
102 }
103
104 struct nv_data {
105 int is_valid;
106 u8 table;
107 };
108
109 /**
110 * struct wcn36xx_vif - holds VIF related fields
111 *
112 * @bss_index: bss_index is initially set to 0xFF. bss_index is received from
113 * HW after first config_bss call and must be used in delete_bss and
114 * enter/exit_bmps.
115 */
116 struct wcn36xx_vif {
117 struct list_head list;
118 u8 dtim_period;
119 enum ani_ed_type encrypt_type;
120 bool is_joining;
121 bool sta_assoc;
122 struct wcn36xx_hal_mac_ssid ssid;
123
124 /* Power management */
125 enum wcn36xx_power_state pw_state;
126
127 u8 bss_index;
128 /* Returned from WCN36XX_HAL_ADD_STA_SELF_RSP */
129 u8 self_sta_index;
130 u8 self_dpu_desc_index;
131 u8 self_ucast_dpu_sign;
132 };
133
134 /**
135 * struct wcn36xx_sta - holds STA related fields
136 *
137 * @tid: traffic ID that is used during AMPDU and in TX BD.
138 * @sta_index: STA index is returned from HW after config_sta call and is
139 * used in both SMD channel and TX BD.
140 * @dpu_desc_index: DPU descriptor index is returned from HW after config_sta
141 * call and is used in TX BD.
142 * @bss_sta_index: STA index is returned from HW after config_bss call and is
143 * used in both SMD channel and TX BD. See table bellow when it is used.
144 * @bss_dpu_desc_index: DPU descriptor index is returned from HW after
145 * config_bss call and is used in TX BD.
146 * ______________________________________________
147 * | | STA | AP |
148 * |______________|_____________|_______________|
149 * | TX BD |bss_sta_index| sta_index |
150 * |______________|_____________|_______________|
151 * |all SMD calls |bss_sta_index| sta_index |
152 * |______________|_____________|_______________|
153 * |smd_delete_sta| sta_index | sta_index |
154 * |______________|_____________|_______________|
155 */
156 struct wcn36xx_sta {
157 struct wcn36xx_vif *vif;
158 u16 aid;
159 u16 tid;
160 u8 sta_index;
161 u8 dpu_desc_index;
162 u8 ucast_dpu_sign;
163 u8 bss_sta_index;
164 u8 bss_dpu_desc_index;
165 bool is_data_encrypted;
166 /* Rates */
167 struct wcn36xx_hal_supported_rates supported_rates;
168
169 spinlock_t ampdu_lock; /* protects next two fields */
170 enum wcn36xx_ampdu_state ampdu_state[16];
171 int non_agg_frame_ct;
172 };
173 struct wcn36xx_dxe_ch;
174 struct wcn36xx {
175 struct ieee80211_hw *hw;
176 struct device *dev;
177 struct list_head vif_list;
178
179 const struct firmware *nv;
180
181 u8 fw_revision;
182 u8 fw_version;
183 u8 fw_minor;
184 u8 fw_major;
185 u32 fw_feat_caps[WCN36XX_HAL_CAPS_SIZE];
186 bool is_pronto;
187
188 /* extra byte for the NULL termination */
189 u8 crm_version[WCN36XX_HAL_VERSION_LENGTH + 1];
190 u8 wlan_version[WCN36XX_HAL_VERSION_LENGTH + 1];
191
192 /* IRQs */
193 int tx_irq;
194 int rx_irq;
195 void __iomem *ccu_base;
196 void __iomem *dxe_base;
197
198 struct rpmsg_endpoint *smd_channel;
199
200 struct qcom_smem_state *tx_enable_state;
201 unsigned tx_enable_state_bit;
202 struct qcom_smem_state *tx_rings_empty_state;
203 unsigned tx_rings_empty_state_bit;
204
205 /* prevents concurrent FW reconfiguration */
206 struct mutex conf_mutex;
207
208 /*
209 * smd_buf must be protected with smd_mutex to garantee
210 * that all messages are sent one after another
211 */
212 u8 *hal_buf;
213 size_t hal_rsp_len;
214 struct mutex hal_mutex;
215 struct completion hal_rsp_compl;
216 struct workqueue_struct *hal_ind_wq;
217 struct work_struct hal_ind_work;
218 spinlock_t hal_ind_lock;
219 struct list_head hal_ind_queue;
220
221 struct work_struct scan_work;
222 struct cfg80211_scan_request *scan_req;
223 int scan_freq;
224 int scan_band;
225 struct mutex scan_lock;
226 bool scan_aborted;
227
228 /* DXE channels */
229 struct wcn36xx_dxe_ch dxe_tx_l_ch; /* TX low */
230 struct wcn36xx_dxe_ch dxe_tx_h_ch; /* TX high */
231 struct wcn36xx_dxe_ch dxe_rx_l_ch; /* RX low */
232 struct wcn36xx_dxe_ch dxe_rx_h_ch; /* RX high */
233
234 /* For synchronization of DXE resources from BH, IRQ and WQ contexts */
235 spinlock_t dxe_lock;
236 bool queues_stopped;
237
238 /* Memory pools */
239 struct wcn36xx_dxe_mem_pool mgmt_mem_pool;
240 struct wcn36xx_dxe_mem_pool data_mem_pool;
241
242 struct sk_buff *tx_ack_skb;
243
244 #ifdef CONFIG_WCN36XX_DEBUGFS
245 /* Debug file system entry */
246 struct wcn36xx_dfs_entry dfs;
247 #endif /* CONFIG_WCN36XX_DEBUGFS */
248
249 };
250
wcn36xx_is_fw_version(struct wcn36xx * wcn,u8 major,u8 minor,u8 version,u8 revision)251 static inline bool wcn36xx_is_fw_version(struct wcn36xx *wcn,
252 u8 major,
253 u8 minor,
254 u8 version,
255 u8 revision)
256 {
257 return (wcn->fw_major == major &&
258 wcn->fw_minor == minor &&
259 wcn->fw_version == version &&
260 wcn->fw_revision == revision);
261 }
262 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates);
263
264 static inline
wcn36xx_priv_to_sta(struct wcn36xx_sta * sta_priv)265 struct ieee80211_sta *wcn36xx_priv_to_sta(struct wcn36xx_sta *sta_priv)
266 {
267 return container_of((void *)sta_priv, struct ieee80211_sta, drv_priv);
268 }
269
270 static inline
wcn36xx_vif_to_priv(struct ieee80211_vif * vif)271 struct wcn36xx_vif *wcn36xx_vif_to_priv(struct ieee80211_vif *vif)
272 {
273 return (struct wcn36xx_vif *) vif->drv_priv;
274 }
275
276 static inline
wcn36xx_priv_to_vif(struct wcn36xx_vif * vif_priv)277 struct ieee80211_vif *wcn36xx_priv_to_vif(struct wcn36xx_vif *vif_priv)
278 {
279 return container_of((void *) vif_priv, struct ieee80211_vif, drv_priv);
280 }
281
282 static inline
wcn36xx_sta_to_priv(struct ieee80211_sta * sta)283 struct wcn36xx_sta *wcn36xx_sta_to_priv(struct ieee80211_sta *sta)
284 {
285 return (struct wcn36xx_sta *)sta->drv_priv;
286 }
287
288 #endif /* _WCN36XX_H_ */
289