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/*-
* Copyright (c) 2012, 2015 Chelsio Communications, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#ifndef __CXGBEI_OFLD_H__
#define __CXGBEI_OFLD_H__
#include <dev/iscsi/icl.h>
enum {
CWT_SLEEPING = 1,
CWT_RUNNING = 2,
CWT_STOP = 3,
CWT_STOPPED = 4,
};
struct cxgbei_worker_thread_softc {
struct mtx cwt_lock;
struct cv cwt_cv;
volatile int cwt_state;
TAILQ_HEAD(, icl_cxgbei_conn) rx_head;
} __aligned(CACHE_LINE_SIZE);
#define CXGBEI_CONN_SIGNATURE 0x56788765
enum {
RXF_ACTIVE = 1 << 0, /* In the worker thread's queue */
};
struct icl_cxgbei_conn {
struct icl_conn ic;
/* cxgbei specific stuff goes here. */
uint32_t icc_signature;
int ulp_submode;
struct adapter *sc;
struct toepcb *toep;
/* Receive related. */
u_int rx_flags; /* protected by so_rcv lock */
u_int cwt;
STAILQ_HEAD(, icl_pdu) rcvd_pdus; /* protected by so_rcv lock */
TAILQ_ENTRY(icl_cxgbei_conn) rx_link; /* protected by cwt lock */
};
static inline struct icl_cxgbei_conn *
ic_to_icc(struct icl_conn *ic)
{
return (__containerof(ic, struct icl_cxgbei_conn, ic));
}
#define CXGBEI_PDU_SIGNATURE 0x12344321
struct icl_cxgbei_pdu {
struct icl_pdu ip;
/* cxgbei specific stuff goes here. */
uint32_t icp_signature;
uint32_t pdu_seq; /* For debug only */
u_int pdu_flags;
};
static inline struct icl_cxgbei_pdu *
ip_to_icp(struct icl_pdu *ip)
{
return (__containerof(ip, struct icl_cxgbei_pdu, ip));
}
struct cxgbei_sgl {
int sg_flag;
void *sg_addr;
void *sg_dma_addr;
size_t sg_offset;
size_t sg_length;
};
#define cxgbei_scsi_for_each_sg(_sgl, _sgel, _n, _i) \
for (_i = 0, _sgel = (cxgbei_sgl*) (_sgl); _i < _n; _i++, \
_sgel++)
#define sg_dma_addr(_sgel) _sgel->sg_dma_addr
#define sg_virt(_sgel) _sgel->sg_addr
#define sg_len(_sgel) _sgel->sg_length
#define sg_off(_sgel) _sgel->sg_offset
#define sg_next(_sgel) _sgel + 1
#define SBUF_ULP_FLAG_HDR_RCVD 0x1
#define SBUF_ULP_FLAG_DATA_RCVD 0x2
#define SBUF_ULP_FLAG_STATUS_RCVD 0x4
#define SBUF_ULP_FLAG_HCRC_ERROR 0x10
#define SBUF_ULP_FLAG_DCRC_ERROR 0x20
#define SBUF_ULP_FLAG_PAD_ERROR 0x40
#define SBUF_ULP_FLAG_DATA_DDPED 0x80
/* private data for each scsi task */
struct cxgbei_task_data {
struct cxgbei_sgl sgl[256];
u_int nsge;
u_int sc_ddp_tag;
};
struct cxgbei_ulp2_tag_format {
u_char sw_bits;
u_char rsvd_bits;
u_char rsvd_shift;
u_char filler[1];
uint32_t rsvd_mask;
};
struct cxgbei_data {
u_int max_txsz;
u_int max_rxsz;
u_int llimit;
u_int ulimit;
u_int nppods;
u_int idx_last;
u_char idx_bits;
uint32_t idx_mask;
uint32_t rsvd_tag_mask;
struct mtx map_lock;
bus_dma_tag_t ulp_ddp_tag;
unsigned char *colors;
struct cxgbei_ulp2_gather_list **gl_map;
struct cxgbei_ulp2_tag_format tag_format;
};
void cxgbei_conn_task_reserve_itt(void *, void **, void *, unsigned int *);
void cxgbei_conn_transfer_reserve_ttt(void *, void **, void *, unsigned int *);
void cxgbei_cleanup_task(void *, void *);
u_int cxgbei_select_worker_thread(struct icl_cxgbei_conn *);
struct cxgbei_ulp2_pagepod_hdr;
int t4_ddp_set_map(struct cxgbei_data *, void *,
struct cxgbei_ulp2_pagepod_hdr *, u_int, u_int,
struct cxgbei_ulp2_gather_list *, int);
void t4_ddp_clear_map(struct cxgbei_data *, struct cxgbei_ulp2_gather_list *,
u_int, u_int, u_int, struct icl_cxgbei_conn *);
#endif
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