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/*
* Copyright (c) 2009- 2012 Espressif System.
*
* Serial Interconnctor Protocol
*/
#ifndef _ESP_SIP_H
#define _ESP_SIP_H
#include "sip2_common.h"
#define SIP_PKT_MAX_LEN (1024*16)
/* 16KB on normal X86 system, should check before porting to orhters */
#define SIP_TX_AGGR_BUF_SIZE (4 * PAGE_SIZE)
#define SIP_RX_AGGR_BUF_SIZE (4 * PAGE_SIZE)
struct sk_buff;
struct sip_pkt {
struct list_head list;
u8 * buf_begin;
u32 buf_len;
u8 * buf;
u32 payload_len;
#if 0
union {
struct sip_tx_pkt_info tx;
struct sip_rx_pkt_info rx;
} info;
#endif
void *context;
int status;
//void (* completion)(struct esp_sip *sip, struct sip_pkt *pkt);
};
typedef enum SIP_STATE {
SIP_INIT = 0,
SIP_PREPARE_BOOT,
SIP_BOOT,
SIP_SEND_INIT,
SIP_WAIT_BOOTUP,
SIP_RUN,
SIP_SUSPEND,
SIP_STOP
} SIP_STATE;
enum sip_notifier {
SIP_TX_DONE = 1,
SIP_RX_DONE = 2,
};
#define SIP_CREDITS_LOW_THRESHOLD 64 //i.e. 4k
struct esp_sip {
struct list_head free_ctrl_txbuf;
struct list_head free_ctrl_rxbuf;
u32 rxseq; /* sip pkt seq, should match target side */
u32 txseq;
u32 txdataseq;
atomic_t state;
spinlock_t lock;
int boot_credits;
atomic_t tx_credits;
atomic_t tx_ask_credit_update;
u8 * rawbuf; /* used in boot stage, free once chip is fully up */
u8 * tx_aggr_buf;
u8 * tx_aggr_write_ptr; /* update after insertion of each pkt */
u8 * tx_aggr_lastpkt_ptr;
#if 0
u8 * rx_aggr_buf;
u8 * rx_aggr_write_ptr;
u8 * rx_aggr_lastpkt_ptr;
#endif
spinlock_t rx_lock;
struct sk_buff_head rxq;
#ifndef RX_SYNC
struct work_struct rx_process_work;
#endif/* RX_SYNC */
u16 tx_blksz;
u16 rx_blksz;
bool dump_rpbm_err;
bool sendup_rpbm_pkt;
bool rxabort_fixed;
bool support_bgscan;
u8 credit_to_reserve;
atomic_t noise_floor;
u32 tx_tot_len; /* total len for one transaction */
u32 rx_tot_len;
atomic_t rx_handling;
atomic_t tx_data_pkt_queued;
#ifndef FAST_TX_STATUS
atomic_t pending_tx_status;
#endif /* !FAST_TX_STATUS */
atomic_t data_tx_stopped;
atomic_t tx_stopped;
struct esp_pub *epub;
};
int sip_rx(struct esp_pub * epub);
//int sip_download_fw(struct esp_sip *sip, u32 load_addr, u32 boot_addr);
/* tx must pad as 4-byte aligned */
int sip_tx(struct esp_pub * epub, struct sip_pkt *pkt);
int sip_get_raw_credits(struct esp_sip *);
int sip_write_memory(struct esp_sip *, u32 addr, u8* buf, u16 len);
void sip_credit_process(struct esp_pub *, u8 credits);
int sip_prepare_boot(struct esp_sip *sip);
int sip_send_cmd(struct esp_sip *sip, int cid, u32 cmdlen, void * cmd);
struct esp_sip * sip_attach(struct esp_pub *);
int sip_post_init(struct esp_sip *sip, struct sip_evt_bootup2 *bevt);
void sip_detach(struct esp_sip *sip);
void sip_txq_process(struct esp_pub *epub);
struct sk_buff * sip_alloc_ctrl_skbuf(struct esp_sip *sip, u16 len, u32 cid);
void sip_free_ctrl_skbuff(struct esp_sip *sip, struct sk_buff* skb);
bool sip_queue_need_stop(struct esp_sip *sip);
bool sip_queue_may_resume(struct esp_sip *sip);
bool sip_tx_data_need_stop(struct esp_sip *sip);
bool sip_tx_data_may_resume(struct esp_sip *sip);
void sip_tx_data_pkt_enqueue(struct esp_pub *epub, struct sk_buff *skb);
void sip_rx_data_pkt_enqueue(struct esp_pub *epub, struct sk_buff *skb);
int sip_cmd_enqueue(struct esp_sip *sip, struct sk_buff *skb);
void sip_dump_pending_data(struct esp_pub *epub);
int sip_poll_bootup_event(struct esp_sip *sip);
int sip_poll_resetting_event(struct esp_sip *sip);
void sip_trigger_txq_process(struct esp_sip *sip);
void sip_send_chip_init(struct esp_sip *sip);
bool mod_support_no_txampdu(void);
bool mod_support_no_rxampdu(void);
void mod_support_no_txampdu_set(bool value);
#ifdef FPGA_DEBUG
int sip_send_bootup(struct esp_sip *sip);
#endif /* FPGA_DEBUG */
void sip_debug_show(struct esp_sip *sip);
#endif
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