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 extern unsigned int wcn36xx_dbg_mask;
39
40 enum wcn36xx_debug_mask {
41 WCN36XX_DBG_DXE = 0x00000001,
42 WCN36XX_DBG_DXE_DUMP = 0x00000002,
43 WCN36XX_DBG_SMD = 0x00000004,
44 WCN36XX_DBG_SMD_DUMP = 0x00000008,
45 WCN36XX_DBG_RX = 0x00000010,
46 WCN36XX_DBG_RX_DUMP = 0x00000020,
47 WCN36XX_DBG_TX = 0x00000040,
48 WCN36XX_DBG_TX_DUMP = 0x00000080,
49 WCN36XX_DBG_HAL = 0x00000100,
50 WCN36XX_DBG_HAL_DUMP = 0x00000200,
51 WCN36XX_DBG_MAC = 0x00000400,
52 WCN36XX_DBG_BEACON = 0x00000800,
53 WCN36XX_DBG_BEACON_DUMP = 0x00001000,
54 WCN36XX_DBG_PMC = 0x00002000,
55 WCN36XX_DBG_PMC_DUMP = 0x00004000,
56 WCN36XX_DBG_ANY = 0xffffffff,
57 };
58
59 #define wcn36xx_err(fmt, arg...) \
60 printk(KERN_ERR pr_fmt("ERROR " fmt), ##arg)
61
62 #define wcn36xx_warn(fmt, arg...) \
63 printk(KERN_WARNING pr_fmt("WARNING " fmt), ##arg)
64
65 #define wcn36xx_info(fmt, arg...) \
66 printk(KERN_INFO pr_fmt(fmt), ##arg)
67
68 #define wcn36xx_dbg(mask, fmt, arg...) do { \
69 if (wcn36xx_dbg_mask & mask) \
70 printk(KERN_DEBUG pr_fmt(fmt), ##arg); \
71 } while (0)
72
73 #define wcn36xx_dbg_dump(mask, prefix_str, buf, len) do { \
74 if (wcn36xx_dbg_mask & mask) \
75 print_hex_dump(KERN_DEBUG, pr_fmt(prefix_str), \
76 DUMP_PREFIX_OFFSET, 32, 1, \
77 buf, len, false); \
78 } while (0)
79
80 enum wcn36xx_ampdu_state {
81 WCN36XX_AMPDU_NONE,
82 WCN36XX_AMPDU_INIT,
83 WCN36XX_AMPDU_START,
84 WCN36XX_AMPDU_OPERATIONAL,
85 };
86
87 #define WCN36XX_HW_CHANNEL(__wcn) (__wcn->hw->conf.chandef.chan->hw_value)
88 #define WCN36XX_BAND(__wcn) (__wcn->hw->conf.chandef.chan->band)
89 #define WCN36XX_CENTER_FREQ(__wcn) (__wcn->hw->conf.chandef.chan->center_freq)
90 #define WCN36XX_LISTEN_INTERVAL(__wcn) (__wcn->hw->conf.listen_interval)
91 #define WCN36XX_FLAGS(__wcn) (__wcn->hw->flags)
92 #define WCN36XX_MAX_POWER(__wcn) (__wcn->hw->conf.chandef.chan->max_power)
93
buff_to_be(u32 * buf,size_t len)94 static inline void buff_to_be(u32 *buf, size_t len)
95 {
96 int i;
97 for (i = 0; i < len; i++)
98 buf[i] = cpu_to_be32(buf[i]);
99 }
100
101 struct nv_data {
102 int is_valid;
103 u8 table;
104 };
105
106 /* Interface for platform control path
107 *
108 * @open: hook must be called when wcn36xx wants to open control channel.
109 * @tx: sends a buffer.
110 */
111 struct wcn36xx_platform_ctrl_ops {
112 int (*open)(void *drv_priv, void *rsp_cb);
113 void (*close)(void);
114 int (*tx)(char *buf, size_t len);
115 int (*get_hw_mac)(u8 *addr);
116 int (*smsm_change_state)(u32 clear_mask, u32 set_mask);
117 };
118
119 /**
120 * struct wcn36xx_vif - holds VIF related fields
121 *
122 * @bss_index: bss_index is initially set to 0xFF. bss_index is received from
123 * HW after first config_bss call and must be used in delete_bss and
124 * enter/exit_bmps.
125 */
126 struct wcn36xx_vif {
127 struct list_head list;
128 struct wcn36xx_sta *sta;
129 u8 dtim_period;
130 enum ani_ed_type encrypt_type;
131 bool is_joining;
132 struct wcn36xx_hal_mac_ssid ssid;
133
134 /* Power management */
135 enum wcn36xx_power_state pw_state;
136
137 u8 bss_index;
138 /* Returned from WCN36XX_HAL_ADD_STA_SELF_RSP */
139 u8 self_sta_index;
140 u8 self_dpu_desc_index;
141 u8 self_ucast_dpu_sign;
142 };
143
144 /**
145 * struct wcn36xx_sta - holds STA related fields
146 *
147 * @tid: traffic ID that is used during AMPDU and in TX BD.
148 * @sta_index: STA index is returned from HW after config_sta call and is
149 * used in both SMD channel and TX BD.
150 * @dpu_desc_index: DPU descriptor index is returned from HW after config_sta
151 * call and is used in TX BD.
152 * @bss_sta_index: STA index is returned from HW after config_bss call and is
153 * used in both SMD channel and TX BD. See table bellow when it is used.
154 * @bss_dpu_desc_index: DPU descriptor index is returned from HW after
155 * config_bss call and is used in TX BD.
156 * ______________________________________________
157 * | | STA | AP |
158 * |______________|_____________|_______________|
159 * | TX BD |bss_sta_index| sta_index |
160 * |______________|_____________|_______________|
161 * |all SMD calls |bss_sta_index| sta_index |
162 * |______________|_____________|_______________|
163 * |smd_delete_sta| sta_index | sta_index |
164 * |______________|_____________|_______________|
165 */
166 struct wcn36xx_sta {
167 struct wcn36xx_vif *vif;
168 u16 aid;
169 u16 tid;
170 u8 sta_index;
171 u8 dpu_desc_index;
172 u8 ucast_dpu_sign;
173 u8 bss_sta_index;
174 u8 bss_dpu_desc_index;
175 bool is_data_encrypted;
176 /* Rates */
177 struct wcn36xx_hal_supported_rates supported_rates;
178
179 spinlock_t ampdu_lock; /* protects next two fields */
180 enum wcn36xx_ampdu_state ampdu_state[16];
181 int non_agg_frame_ct;
182 };
183 struct wcn36xx_dxe_ch;
184 struct wcn36xx {
185 struct ieee80211_hw *hw;
186 struct device *dev;
187 struct list_head vif_list;
188
189 const struct firmware *nv;
190
191 u8 fw_revision;
192 u8 fw_version;
193 u8 fw_minor;
194 u8 fw_major;
195 u32 fw_feat_caps[WCN36XX_HAL_CAPS_SIZE];
196 u32 chip_version;
197
198 /* extra byte for the NULL termination */
199 u8 crm_version[WCN36XX_HAL_VERSION_LENGTH + 1];
200 u8 wlan_version[WCN36XX_HAL_VERSION_LENGTH + 1];
201
202 /* IRQs */
203 int tx_irq;
204 int rx_irq;
205 void __iomem *mmio;
206
207 struct wcn36xx_platform_ctrl_ops *ctrl_ops;
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 struct mutex hal_ind_mutex;
219 struct list_head hal_ind_queue;
220
221 /* DXE channels */
222 struct wcn36xx_dxe_ch dxe_tx_l_ch; /* TX low */
223 struct wcn36xx_dxe_ch dxe_tx_h_ch; /* TX high */
224 struct wcn36xx_dxe_ch dxe_rx_l_ch; /* RX low */
225 struct wcn36xx_dxe_ch dxe_rx_h_ch; /* RX high */
226
227 /* For synchronization of DXE resources from BH, IRQ and WQ contexts */
228 spinlock_t dxe_lock;
229 bool queues_stopped;
230
231 /* Memory pools */
232 struct wcn36xx_dxe_mem_pool mgmt_mem_pool;
233 struct wcn36xx_dxe_mem_pool data_mem_pool;
234
235 struct sk_buff *tx_ack_skb;
236
237 #ifdef CONFIG_WCN36XX_DEBUGFS
238 /* Debug file system entry */
239 struct wcn36xx_dfs_entry dfs;
240 #endif /* CONFIG_WCN36XX_DEBUGFS */
241
242 };
243
244 #define WCN36XX_CHIP_3660 0
245 #define WCN36XX_CHIP_3680 1
246
wcn36xx_is_fw_version(struct wcn36xx * wcn,u8 major,u8 minor,u8 version,u8 revision)247 static inline bool wcn36xx_is_fw_version(struct wcn36xx *wcn,
248 u8 major,
249 u8 minor,
250 u8 version,
251 u8 revision)
252 {
253 return (wcn->fw_major == major &&
254 wcn->fw_minor == minor &&
255 wcn->fw_version == version &&
256 wcn->fw_revision == revision);
257 }
258 void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates);
259
260 static inline
wcn36xx_priv_to_sta(struct wcn36xx_sta * sta_priv)261 struct ieee80211_sta *wcn36xx_priv_to_sta(struct wcn36xx_sta *sta_priv)
262 {
263 return container_of((void *)sta_priv, struct ieee80211_sta, drv_priv);
264 }
265
266 #endif /* _WCN36XX_H_ */
267