/*
 * This file is part of wlcore
 *
 * Copyright (C) 2011 Texas Instruments Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#ifndef __WLCORE_H__
#define __WLCORE_H__

#include <linux/platform_device.h>

#include "wlcore_i.h"
#include "event.h"
#include "boot.h"

/* The maximum number of Tx descriptors in all chip families */
#define WLCORE_MAX_TX_DESCRIPTORS 32

/*
 * We always allocate this number of mac addresses. If we don't
 * have enough allocated addresses, the LAA bit is used
 */
#define WLCORE_NUM_MAC_ADDRESSES 3

/* wl12xx/wl18xx maximum transmission power (in dBm) */
#define WLCORE_MAX_TXPWR        25

/* forward declaration */
struct wl1271_tx_hw_descr;
enum wl_rx_buf_align;
struct wl1271_rx_descriptor;

struct wlcore_ops {
        int (*setup)(struct wl1271 *wl);
        int (*identify_chip)(struct wl1271 *wl);
        int (*identify_fw)(struct wl1271 *wl);
        int (*boot)(struct wl1271 *wl);
        int (*plt_init)(struct wl1271 *wl);
        int (*trigger_cmd)(struct wl1271 *wl, int cmd_box_addr,
                           void *buf, size_t len);
        int (*ack_event)(struct wl1271 *wl);
        int (*wait_for_event)(struct wl1271 *wl, enum wlcore_wait_event event,
                              bool *timeout);
        int (*process_mailbox_events)(struct wl1271 *wl);
        u32 (*calc_tx_blocks)(struct wl1271 *wl, u32 len, u32 spare_blks);
        void (*set_tx_desc_blocks)(struct wl1271 *wl,
                                   struct wl1271_tx_hw_descr *desc,
                                   u32 blks, u32 spare_blks);
        void (*set_tx_desc_data_len)(struct wl1271 *wl,
                                     struct wl1271_tx_hw_descr *desc,
                                     struct sk_buff *skb);
        enum wl_rx_buf_align (*get_rx_buf_align)(struct wl1271 *wl,
                                                 u32 rx_desc);
        int (*prepare_read)(struct wl1271 *wl, u32 rx_desc, u32 len);
        u32 (*get_rx_packet_len)(struct wl1271 *wl, void *rx_data,
                                 u32 data_len);
        int (*tx_delayed_compl)(struct wl1271 *wl);
        void (*tx_immediate_compl)(struct wl1271 *wl);
        int (*hw_init)(struct wl1271 *wl);
        int (*init_vif)(struct wl1271 *wl, struct wl12xx_vif *wlvif);
        void (*convert_fw_status)(struct wl1271 *wl, void *raw_fw_status,
                                  struct wl_fw_status *fw_status);
        u32 (*sta_get_ap_rate_mask)(struct wl1271 *wl,
                                    struct wl12xx_vif *wlvif);
        int (*get_pg_ver)(struct wl1271 *wl, s8 *ver);
        int (*get_mac)(struct wl1271 *wl);
        void (*set_tx_desc_csum)(struct wl1271 *wl,
                                 struct wl1271_tx_hw_descr *desc,
                                 struct sk_buff *skb);
        void (*set_rx_csum)(struct wl1271 *wl,
                            struct wl1271_rx_descriptor *desc,
                            struct sk_buff *skb);
        u32 (*ap_get_mimo_wide_rate_mask)(struct wl1271 *wl,
                                          struct wl12xx_vif *wlvif);
        int (*debugfs_init)(struct wl1271 *wl, struct dentry *rootdir);
        int (*handle_static_data)(struct wl1271 *wl,
                                  struct wl1271_static_data *static_data);
        int (*scan_start)(struct wl1271 *wl, struct wl12xx_vif *wlvif,
                          struct cfg80211_scan_request *req);
        int (*scan_stop)(struct wl1271 *wl, struct wl12xx_vif *wlvif);
        int (*sched_scan_start)(struct wl1271 *wl, struct wl12xx_vif *wlvif,
                                struct cfg80211_sched_scan_request *req,
                                struct ieee80211_scan_ies *ies);
        void (*sched_scan_stop)(struct wl1271 *wl, struct wl12xx_vif *wlvif);
        int (*get_spare_blocks)(struct wl1271 *wl, bool is_gem);
        int (*set_key)(struct wl1271 *wl, enum set_key_cmd cmd,
                       struct ieee80211_vif *vif,
                       struct ieee80211_sta *sta,
                       struct ieee80211_key_conf *key_conf);
        int (*channel_switch)(struct wl1271 *wl,
                              struct wl12xx_vif *wlvif,
                              struct ieee80211_channel_switch *ch_switch);
        u32 (*pre_pkt_send)(struct wl1271 *wl, u32 buf_offset, u32 last_len);
        void (*sta_rc_update)(struct wl1271 *wl, struct wl12xx_vif *wlvif);
        int (*set_peer_cap)(struct wl1271 *wl,
                            struct ieee80211_sta_ht_cap *ht_cap,
                            bool allow_ht_operation,
                            u32 rate_set, u8 hlid);
        u32 (*convert_hwaddr)(struct wl1271 *wl, u32 hwaddr);
        bool (*lnk_high_prio)(struct wl1271 *wl, u8 hlid,
                              struct wl1271_link *lnk);
        bool (*lnk_low_prio)(struct wl1271 *wl, u8 hlid,
                             struct wl1271_link *lnk);
        int (*interrupt_notify)(struct wl1271 *wl, bool action);
        int (*rx_ba_filter)(struct wl1271 *wl, bool action);
        int (*ap_sleep)(struct wl1271 *wl);
        int (*smart_config_start)(struct wl1271 *wl, u32 group_bitmap);
        int (*smart_config_stop)(struct wl1271 *wl);
        int (*smart_config_set_group_key)(struct wl1271 *wl, u16 group_id,
                                          u8 key_len, u8 *key);
        int (*set_cac)(struct wl1271 *wl, struct wl12xx_vif *wlvif,
                       bool start);
        int (*dfs_master_restart)(struct wl1271 *wl, struct wl12xx_vif *wlvif);
};

enum wlcore_partitions {
        PART_DOWN,
        PART_WORK,
        PART_BOOT,
        PART_DRPW,
        PART_TOP_PRCM_ELP_SOC,
        PART_PHY_INIT,

        PART_TABLE_LEN,
};

struct wlcore_partition {
        u32 size;
        u32 start;
};

struct wlcore_partition_set {
        struct wlcore_partition mem;
        struct wlcore_partition reg;
        struct wlcore_partition mem2;
        struct wlcore_partition mem3;
};

enum wlcore_registers {
        /* register addresses, used with partition translation */
        REG_ECPU_CONTROL,
        REG_INTERRUPT_NO_CLEAR,
        REG_INTERRUPT_ACK,
        REG_COMMAND_MAILBOX_PTR,
        REG_EVENT_MAILBOX_PTR,
        REG_INTERRUPT_TRIG,
        REG_INTERRUPT_MASK,
        REG_PC_ON_RECOVERY,
        REG_CHIP_ID_B,
        REG_CMD_MBOX_ADDRESS,

        /* data access memory addresses, used with partition translation */
        REG_SLV_MEM_DATA,
        REG_SLV_REG_DATA,

        /* raw data access memory addresses */
        REG_RAW_FW_STATUS_ADDR,

        REG_TABLE_LEN,
};

struct wl1271_stats {
        void *fw_stats;
        unsigned long fw_stats_update;
        size_t fw_stats_len;

        unsigned int retry_count;
        unsigned int excessive_retries;
};

struct wl1271 {
        bool initialized;
        struct ieee80211_hw *hw;
        bool mac80211_registered;

        struct device *dev;
        struct platform_device *pdev;

        void *if_priv;

        struct wl1271_if_operations *if_ops;

        int irq;

        int irq_flags;

        spinlock_t wl_lock;

        enum wlcore_state state;
        enum wl12xx_fw_type fw_type;
        bool plt;
        enum plt_mode plt_mode;
        u8 fem_manuf;
        u8 last_vif_count;
        struct mutex mutex;

        unsigned long flags;

        struct wlcore_partition_set curr_part;

        struct wl1271_chip chip;

        int cmd_box_addr;

        u8 *fw;
        size_t fw_len;
        void *nvs;
        size_t nvs_len;

        s8 hw_pg_ver;

        /* address read from the fuse ROM */
        u32 fuse_oui_addr;
        u32 fuse_nic_addr;

        /* we have up to 2 MAC addresses */
        struct mac_address addresses[WLCORE_NUM_MAC_ADDRESSES];
        int channel;
        u8 system_hlid;

        unsigned long links_map[BITS_TO_LONGS(WLCORE_MAX_LINKS)];
        unsigned long roles_map[BITS_TO_LONGS(WL12XX_MAX_ROLES)];
        unsigned long roc_map[BITS_TO_LONGS(WL12XX_MAX_ROLES)];
        unsigned long rate_policies_map[
                        BITS_TO_LONGS(WL12XX_MAX_RATE_POLICIES)];
        unsigned long klv_templates_map[
                        BITS_TO_LONGS(WLCORE_MAX_KLV_TEMPLATES)];

        u8 session_ids[WLCORE_MAX_LINKS];

        struct list_head wlvif_list;

        u8 sta_count;
        u8 ap_count;

        struct wl1271_acx_mem_map *target_mem_map;

        /* Accounting for allocated / available TX blocks on HW */
        u32 tx_blocks_freed;
        u32 tx_blocks_available;
        u32 tx_allocated_blocks;
        u32 tx_results_count;

        /* Accounting for allocated / available Tx packets in HW */
        u32 tx_pkts_freed[NUM_TX_QUEUES];
        u32 tx_allocated_pkts[NUM_TX_QUEUES];

        /* Transmitted TX packets counter for chipset interface */
        u32 tx_packets_count;

        /* Time-offset between host and chipset clocks */
        s64 time_offset;

        /* Frames scheduled for transmission, not handled yet */
        int tx_queue_count[NUM_TX_QUEUES];
        unsigned long queue_stop_reasons[
                                NUM_TX_QUEUES * WLCORE_NUM_MAC_ADDRESSES];

        /* Frames received, not handled yet by mac80211 */
        struct sk_buff_head deferred_rx_queue;

        /* Frames sent, not returned yet to mac80211 */
        struct sk_buff_head deferred_tx_queue;

        struct work_struct tx_work;
        struct workqueue_struct *freezable_wq;

        /* Pending TX frames */
        unsigned long tx_frames_map[BITS_TO_LONGS(WLCORE_MAX_TX_DESCRIPTORS)];
        struct sk_buff *tx_frames[WLCORE_MAX_TX_DESCRIPTORS];
        int tx_frames_cnt;

        /* FW Rx counter */
        u32 rx_counter;

        /* Intermediate buffer, used for packet aggregation */
        u8 *aggr_buf;
        u32 aggr_buf_size;

        /* Reusable dummy packet template */
        struct sk_buff *dummy_packet;

        /* Network stack work  */
        struct work_struct netstack_work;

        /* FW log buffer */
        u8 *fwlog;

        /* Number of valid bytes in the FW log buffer */
        ssize_t fwlog_size;

        /* FW log end marker */
        u32 fwlog_end;

        /* FW memory block size */
        u32 fw_mem_block_size;

        /* Hardware recovery work */
        struct work_struct recovery_work;
        bool watchdog_recovery;

        /* Reg domain last configuration */
        u32 reg_ch_conf_last[2]  __aligned(8);
        /* Reg domain pending configuration */
        u32 reg_ch_conf_pending[2];

        /* Pointer that holds DMA-friendly block for the mailbox */
        void *mbox;

        /* The mbox event mask */
        u32 event_mask;
        /* events to unmask only when ap interface is up */
        u32 ap_event_mask;

        /* Mailbox pointers */
        u32 mbox_size;
        u32 mbox_ptr[2];

        /* Are we currently scanning */
        struct wl12xx_vif *scan_wlvif;
        struct wl1271_scan scan;
        struct delayed_work scan_complete_work;

        struct ieee80211_vif *roc_vif;
        struct delayed_work roc_complete_work;

        struct wl12xx_vif *sched_vif;

        /* The current band */
        enum ieee80211_band band;

        struct completion *elp_compl;
        struct delayed_work elp_work;

        /* in dBm */
        int power_level;

        struct wl1271_stats stats;

        __le32 *buffer_32;
        u32 buffer_cmd;
        u32 buffer_busyword[WL1271_BUSY_WORD_CNT];

        void *raw_fw_status;
        struct wl_fw_status *fw_status;
        struct wl1271_tx_hw_res_if *tx_res_if;

        /* Current chipset configuration */
        struct wlcore_conf conf;

        bool sg_enabled;

        bool enable_11a;

        int recovery_count;

        /* Most recently reported noise in dBm */
        s8 noise;

        /* bands supported by this instance of wl12xx */
        struct ieee80211_supported_band bands[WLCORE_NUM_BANDS];

        /*
         * wowlan trigger was configured during suspend.
         * (currently, only "ANY" trigger is supported)
         */
        bool wow_enabled;
        bool irq_wake_enabled;

        /*
         * AP-mode - links indexed by HLID. The global and broadcast links
         * are always active.
         */
        struct wl1271_link links[WLCORE_MAX_LINKS];

        /* number of currently active links */
        int active_link_count;

        /* Fast/slow links bitmap according to FW */
        unsigned long fw_fast_lnk_map;

        /* AP-mode - a bitmap of links currently in PS mode according to FW */
        unsigned long ap_fw_ps_map;

        /* AP-mode - a bitmap of links currently in PS mode in mac80211 */
        unsigned long ap_ps_map;

        /* Quirks of specific hardware revisions */
        unsigned int quirks;

        /* number of currently active RX BA sessions */
        int ba_rx_session_count;

        /* Maximum number of supported RX BA sessions */
        int ba_rx_session_count_max;

        /* AP-mode - number of currently connected stations */
        int active_sta_count;

        /* Flag determining whether AP should broadcast OFDM-only rates */
        bool ofdm_only_ap;

        /* last wlvif we transmitted from */
        struct wl12xx_vif *last_wlvif;

        /* work to fire when Tx is stuck */
        struct delayed_work tx_watchdog_work;

        struct wlcore_ops *ops;
        /* pointer to the lower driver partition table */
        const struct wlcore_partition_set *ptable;
        /* pointer to the lower driver register table */
        const int *rtable;
        /* name of the firmwares to load - for PLT, single role, multi-role */
        const char *plt_fw_name;
        const char *sr_fw_name;
        const char *mr_fw_name;

        u8 scan_templ_id_2_4;
        u8 scan_templ_id_5;
        u8 sched_scan_templ_id_2_4;
        u8 sched_scan_templ_id_5;
        u8 max_channels_5;

        /* per-chip-family private structure */
        void *priv;

        /* number of TX descriptors the HW supports. */
        u32 num_tx_desc;
        /* number of RX descriptors the HW supports. */
        u32 num_rx_desc;
        /* number of links the HW supports */
        u8 num_links;
        /* max stations a single AP can support */
        u8 max_ap_stations;

        /* translate HW Tx rates to standard rate-indices */
        const u8 **band_rate_to_idx;

        /* size of table for HW rates that can be received from chip */
        u8 hw_tx_rate_tbl_size;

        /* this HW rate and below are considered HT rates for this chip */
        u8 hw_min_ht_rate;

        /* HW HT (11n) capabilities */
        struct ieee80211_sta_ht_cap ht_cap[WLCORE_NUM_BANDS];

        /* the current dfs region */
        enum nl80211_dfs_regions dfs_region;
        bool radar_debug_mode;

        /* size of the private FW status data */
        size_t fw_status_len;
        size_t fw_status_priv_len;

        /* RX Data filter rule state - enabled/disabled */
        unsigned long rx_filter_enabled[BITS_TO_LONGS(WL1271_MAX_RX_FILTERS)];

        /* size of the private static data */
        size_t static_data_priv_len;

        /* the current channel type */
        enum nl80211_channel_type channel_type;

        /* mutex for protecting the tx_flush function */
        struct mutex flush_mutex;

        /* sleep auth value currently configured to FW */
        int sleep_auth;

        /* the number of allocated MAC addresses in this chip */
        int num_mac_addr;

        /* minimum FW version required for the driver to work in single-role */
        unsigned int min_sr_fw_ver[NUM_FW_VER];

        /* minimum FW version required for the driver to work in multi-role */
        unsigned int min_mr_fw_ver[NUM_FW_VER];

        struct completion nvs_loading_complete;

        /* interface combinations supported by the hw */
        const struct ieee80211_iface_combination *iface_combinations;
        u8 n_iface_combinations;

        /* dynamic fw traces */
        u32 dynamic_fw_traces;
};

int wlcore_probe(struct wl1271 *wl, struct platform_device *pdev);
int wlcore_remove(struct platform_device *pdev);
struct ieee80211_hw *wlcore_alloc_hw(size_t priv_size, u32 aggr_buf_size,
                                     u32 mbox_size);
int wlcore_free_hw(struct wl1271 *wl);
int wlcore_set_key(struct wl1271 *wl, enum set_key_cmd cmd,
                   struct ieee80211_vif *vif,
                   struct ieee80211_sta *sta,
                   struct ieee80211_key_conf *key_conf);
void wlcore_regdomain_config(struct wl1271 *wl);
void wlcore_update_inconn_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif,
                              struct wl1271_station *wl_sta, bool in_conn);

static inline void
wlcore_set_ht_cap(struct wl1271 *wl, enum ieee80211_band band,
                  struct ieee80211_sta_ht_cap *ht_cap)
{
        memcpy(&wl->ht_cap[band], ht_cap, sizeof(*ht_cap));
}

/* Tell wlcore not to care about this element when checking the version */
#define WLCORE_FW_VER_IGNORE    -1

static inline void
wlcore_set_min_fw_ver(struct wl1271 *wl, unsigned int chip,
                      unsigned int iftype_sr, unsigned int major_sr,
                      unsigned int subtype_sr, unsigned int minor_sr,
                      unsigned int iftype_mr, unsigned int major_mr,
                      unsigned int subtype_mr, unsigned int minor_mr)
{
        wl->min_sr_fw_ver[FW_VER_CHIP] = chip;
        wl->min_sr_fw_ver[FW_VER_IF_TYPE] = iftype_sr;
        wl->min_sr_fw_ver[FW_VER_MAJOR] = major_sr;
        wl->min_sr_fw_ver[FW_VER_SUBTYPE] = subtype_sr;
        wl->min_sr_fw_ver[FW_VER_MINOR] = minor_sr;

        wl->min_mr_fw_ver[FW_VER_CHIP] = chip;
        wl->min_mr_fw_ver[FW_VER_IF_TYPE] = iftype_mr;
        wl->min_mr_fw_ver[FW_VER_MAJOR] = major_mr;
        wl->min_mr_fw_ver[FW_VER_SUBTYPE] = subtype_mr;
        wl->min_mr_fw_ver[FW_VER_MINOR] = minor_mr;
}

/* Firmware image load chunk size */
#define CHUNK_SIZE      16384

/* Quirks */

/* Each RX/TX transaction requires an end-of-transaction transfer */
#define WLCORE_QUIRK_END_OF_TRANSACTION         BIT(0)

/* the first start_role(sta) sometimes doesn't work on wl12xx */
#define WLCORE_QUIRK_START_STA_FAILS            BIT(1)

/* wl127x and SPI don't support SDIO block size alignment */
#define WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN         BIT(2)

/* means aggregated Rx packets are aligned to a SDIO block */
#define WLCORE_QUIRK_RX_BLOCKSIZE_ALIGN         BIT(3)

/* Older firmwares did not implement the FW logger over bus feature */
#define WLCORE_QUIRK_FWLOG_NOT_IMPLEMENTED      BIT(4)

/* Older firmwares use an old NVS format */
#define WLCORE_QUIRK_LEGACY_NVS                 BIT(5)

/* pad only the last frame in the aggregate buffer */
#define WLCORE_QUIRK_TX_PAD_LAST_FRAME          BIT(7)

/* extra header space is required for TKIP */
#define WLCORE_QUIRK_TKIP_HEADER_SPACE          BIT(8)

/* Some firmwares not support sched scans while connected */
#define WLCORE_QUIRK_NO_SCHED_SCAN_WHILE_CONN   BIT(9)

/* separate probe response templates for one-shot and sched scans */
#define WLCORE_QUIRK_DUAL_PROBE_TMPL            BIT(10)

/* Firmware requires reg domain configuration for active calibration */
#define WLCORE_QUIRK_REGDOMAIN_CONF             BIT(11)

/* The FW only support a zero session id for AP */
#define WLCORE_QUIRK_AP_ZERO_SESSION_ID         BIT(12)

/* TODO: move all these common registers and values elsewhere */
#define HW_ACCESS_ELP_CTRL_REG          0x1FFFC

/* ELP register commands */
#define ELPCTRL_WAKE_UP             0x1
#define ELPCTRL_WAKE_UP_WLAN_READY  0x5
#define ELPCTRL_SLEEP               0x0
/* ELP WLAN_READY bit */
#define ELPCTRL_WLAN_READY          0x2

/*************************************************************************

    Interrupt Trigger Register (Host -> WiLink)

**************************************************************************/

/* Hardware to Embedded CPU Interrupts - first 32-bit register set */

/*
 * The host sets this bit to inform the Wlan
 * FW that a TX packet is in the XFER
 * Buffer #0.
 */
#define INTR_TRIG_TX_PROC0 BIT(2)

/*
 * The host sets this bit to inform the FW
 * that it read a packet from RX XFER
 * Buffer #0.
 */
#define INTR_TRIG_RX_PROC0 BIT(3)

#define INTR_TRIG_DEBUG_ACK BIT(4)

#define INTR_TRIG_STATE_CHANGED BIT(5)

/* Hardware to Embedded CPU Interrupts - second 32-bit register set */

/*
 * The host sets this bit to inform the FW
 * that it read a packet from RX XFER
 * Buffer #1.
 */
#define INTR_TRIG_RX_PROC1 BIT(17)

/*
 * The host sets this bit to inform the Wlan
 * hardware that a TX packet is in the XFER
 * Buffer #1.
 */
#define INTR_TRIG_TX_PROC1 BIT(18)

#define ACX_SLV_SOFT_RESET_BIT  BIT(1)
#define SOFT_RESET_MAX_TIME     1000000
#define SOFT_RESET_STALL_TIME   1000

#define ECPU_CONTROL_HALT       0x00000101

#define WELP_ARM_COMMAND_VAL    0x4

#endif /* __WLCORE_H__ */