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
 41extern unsigned int wcn36xx_dbg_mask;
 42
 43enum 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
 83enum 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
 97#define RF_UNKNOWN	0x0000
 98#define RF_IRIS_WCN3620	0x3620
 99
100static inline void buff_to_be(u32 *buf, size_t len)
101{
102	int i;
103	for (i = 0; i < len; i++)
104		buf[i] = cpu_to_be32(buf[i]);
105}
106
107struct nv_data {
108	int	is_valid;
109	u8	table;
110};
111
112/**
113 * struct wcn36xx_vif - holds VIF related fields
114 *
115 * @bss_index: bss_index is initially set to 0xFF. bss_index is received from
116 * HW after first config_bss call and must be used in delete_bss and
117 * enter/exit_bmps.
118 */
119struct wcn36xx_vif {
120	struct list_head list;
121	u8 dtim_period;
122	enum ani_ed_type encrypt_type;
123	bool is_joining;
124	bool sta_assoc;
125	struct wcn36xx_hal_mac_ssid ssid;
126
127	/* Power management */
128	enum wcn36xx_power_state pw_state;
129
130	u8 bss_index;
131	/* Returned from WCN36XX_HAL_ADD_STA_SELF_RSP */
132	u8 self_sta_index;
133	u8 self_dpu_desc_index;
134	u8 self_ucast_dpu_sign;
135};
136
137/**
138 * struct wcn36xx_sta - holds STA related fields
139 *
140 * @tid: traffic ID that is used during AMPDU and in TX BD.
141 * @sta_index: STA index is returned from HW after config_sta call and is
142 * used in both SMD channel and TX BD.
143 * @dpu_desc_index: DPU descriptor index is returned from HW after config_sta
144 * call and is used in TX BD.
145 * @bss_sta_index: STA index is returned from HW after config_bss call and is
146 * used in both SMD channel and TX BD. See table bellow when it is used.
147 * @bss_dpu_desc_index: DPU descriptor index is returned from HW after
148 * config_bss call and is used in TX BD.
149 * ______________________________________________
150 * |		  |	STA	|	AP	|
151 * |______________|_____________|_______________|
152 * |    TX BD     |bss_sta_index|   sta_index   |
153 * |______________|_____________|_______________|
154 * |all SMD calls |bss_sta_index|   sta_index	|
155 * |______________|_____________|_______________|
156 * |smd_delete_sta|  sta_index  |   sta_index	|
157 * |______________|_____________|_______________|
158 */
159struct wcn36xx_sta {
160	struct wcn36xx_vif *vif;
161	u16 aid;
162	u16 tid;
163	u8 sta_index;
164	u8 dpu_desc_index;
165	u8 ucast_dpu_sign;
166	u8 bss_sta_index;
167	u8 bss_dpu_desc_index;
168	bool is_data_encrypted;
169	/* Rates */
170	struct wcn36xx_hal_supported_rates supported_rates;
171
172	spinlock_t ampdu_lock;		/* protects next two fields */
173	enum wcn36xx_ampdu_state ampdu_state[16];
174	int non_agg_frame_ct;
175};
176struct wcn36xx_dxe_ch;
177struct wcn36xx {
178	struct ieee80211_hw	*hw;
179	struct device		*dev;
180	struct list_head	vif_list;
181
182	const struct firmware	*nv;
183
184	u8			fw_revision;
185	u8			fw_version;
186	u8			fw_minor;
187	u8			fw_major;
188	u32			fw_feat_caps[WCN36XX_HAL_CAPS_SIZE];
189	bool			is_pronto;
190
191	/* extra byte for the NULL termination */
192	u8			crm_version[WCN36XX_HAL_VERSION_LENGTH + 1];
193	u8			wlan_version[WCN36XX_HAL_VERSION_LENGTH + 1];
194
195	bool		first_boot;
196
197	/* IRQs */
198	int			tx_irq;
199	int			rx_irq;
200	void __iomem		*ccu_base;
201	void __iomem		*dxe_base;
202
203	struct rpmsg_endpoint	*smd_channel;
204
205	struct qcom_smem_state  *tx_enable_state;
206	unsigned		tx_enable_state_bit;
207	struct qcom_smem_state	*tx_rings_empty_state;
208	unsigned		tx_rings_empty_state_bit;
209
210	/* prevents concurrent FW reconfiguration */
211	struct mutex		conf_mutex;
212
213	/*
214	 * smd_buf must be protected with smd_mutex to garantee
215	 * that all messages are sent one after another
216	 */
217	u8			*hal_buf;
218	size_t			hal_rsp_len;
219	struct mutex		hal_mutex;
220	struct completion	hal_rsp_compl;
221	struct workqueue_struct	*hal_ind_wq;
222	struct work_struct	hal_ind_work;
223	spinlock_t		hal_ind_lock;
224	struct list_head	hal_ind_queue;
225
226	struct work_struct	scan_work;
227	struct cfg80211_scan_request *scan_req;
228	int			scan_freq;
229	int			scan_band;
230	struct mutex		scan_lock;
231	bool			scan_aborted;
232
233	/* DXE channels */
234	struct wcn36xx_dxe_ch	dxe_tx_l_ch;	/* TX low */
235	struct wcn36xx_dxe_ch	dxe_tx_h_ch;	/* TX high */
236	struct wcn36xx_dxe_ch	dxe_rx_l_ch;	/* RX low */
237	struct wcn36xx_dxe_ch	dxe_rx_h_ch;	/* RX high */
238
239	/* For synchronization of DXE resources from BH, IRQ and WQ contexts */
240	spinlock_t	dxe_lock;
241	bool                    queues_stopped;
242
243	/* Memory pools */
244	struct wcn36xx_dxe_mem_pool mgmt_mem_pool;
245	struct wcn36xx_dxe_mem_pool data_mem_pool;
246
247	struct sk_buff		*tx_ack_skb;
248
249	/* RF module */
250	unsigned		rf_id;
251
252#ifdef CONFIG_WCN36XX_DEBUGFS
253	/* Debug file system entry */
254	struct wcn36xx_dfs_entry    dfs;
255#endif /* CONFIG_WCN36XX_DEBUGFS */
256
257};
258
259static inline bool wcn36xx_is_fw_version(struct wcn36xx *wcn,
260					 u8 major,
261					 u8 minor,
262					 u8 version,
263					 u8 revision)
264{
265	return (wcn->fw_major == major &&
266		wcn->fw_minor == minor &&
267		wcn->fw_version == version &&
268		wcn->fw_revision == revision);
269}
270void wcn36xx_set_default_rates(struct wcn36xx_hal_supported_rates *rates);
271
272static inline
273struct ieee80211_sta *wcn36xx_priv_to_sta(struct wcn36xx_sta *sta_priv)
274{
275	return container_of((void *)sta_priv, struct ieee80211_sta, drv_priv);
276}
277
278static inline
279struct wcn36xx_vif *wcn36xx_vif_to_priv(struct ieee80211_vif *vif)
280{
281	return (struct wcn36xx_vif *) vif->drv_priv;
282}
283
284static inline
285struct ieee80211_vif *wcn36xx_priv_to_vif(struct wcn36xx_vif *vif_priv)
286{
287	return container_of((void *) vif_priv, struct ieee80211_vif, drv_priv);
288}
289
290static inline
291struct wcn36xx_sta *wcn36xx_sta_to_priv(struct ieee80211_sta *sta)
292{
293	return (struct wcn36xx_sta *)sta->drv_priv;
294}
295
296#endif	/* _WCN36XX_H_ */