drivers/net/wireless/ath/wcn36xx/wcn36xx.h

   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
  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
 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
 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_ */