/* bnx2i.h: Broadcom NetXtreme II iSCSI driver. | |
* | |
* Copyright (c) 2006 - 2008 Broadcom Corporation | |
* Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved. | |
* Copyright (c) 2007, 2008 Mike Christie | |
* | |
* This program is free software; you can redistribute it and/or modify | |
* it under the terms of the GNU General Public License as published by | |
* the Free Software Foundation. | |
* | |
* Written by: Anil Veerabhadrappa (anilgv@broadcom.com) | |
*/ | |
#ifndef _BNX2I_H_ | |
#define _BNX2I_H_ | |
#include <linux/module.h> | |
#include <linux/moduleparam.h> | |
#include <linux/errno.h> | |
#include <linux/pci.h> | |
#include <linux/spinlock.h> | |
#include <linux/interrupt.h> | |
#include <linux/sched.h> | |
#include <linux/in.h> | |
#include <linux/in6.h> | |
#include <linux/kfifo.h> | |
#include <linux/netdevice.h> | |
#include <linux/completion.h> | |
#include <scsi/scsi_cmnd.h> | |
#include <scsi/scsi_device.h> | |
#include <scsi/scsi_eh.h> | |
#include <scsi/scsi_host.h> | |
#include <scsi/scsi.h> | |
#include <scsi/iscsi_proto.h> | |
#include <scsi/libiscsi.h> | |
#include <scsi/scsi_transport_iscsi.h> | |
/* Compile time option to enable / disable ioctl code */ | |
#define _BNX2I_IOCTL_ 1 | |
#include "cnic_if.h" | |
#include "57xx_iscsi_hsi.h" | |
#include "57xx_iscsi_constants_bnx2i.h" | |
#define BNX2_ISCSI_DRIVER_NAME "bnx2i" | |
#define BNX2I_MAX_ADAPTERS 8 | |
#define ISCSI_MAX_CONNS_PER_HBA 128 | |
#define ISCSI_MAX_SESS_PER_HBA ISCSI_MAX_CONNS_PER_HBA | |
#define ISCSI_MAX_CMDS_PER_SESS 128 | |
/* Total active commands across all connections supported by devices */ | |
#define ISCSI_MAX_CMDS_PER_HBA_5708 (28 * (ISCSI_MAX_CMDS_PER_SESS - 1)) | |
#define ISCSI_MAX_CMDS_PER_HBA_5709 (128 * (ISCSI_MAX_CMDS_PER_SESS - 1)) | |
#define ISCSI_MAX_CMDS_PER_HBA_57710 (256 * (ISCSI_MAX_CMDS_PER_SESS - 1)) | |
#define ISCSI_MAX_BDS_PER_CMD 32 | |
#define MAX_PAGES_PER_CTRL_STRUCT_POOL 8 | |
#define BNX2I_RESERVED_SLOW_PATH_CMD_SLOTS 4 | |
#define BNX2I_STATSN_UPDATE_SIGNATURE 0xFABCAFE | |
/* 5706/08 hardware has limit on maximum buffer size per BD it can handle */ | |
#define MAX_BD_LENGTH 65535 | |
#define BD_SPLIT_SIZE 32768 | |
/* min, max & default values for SQ/RQ/CQ size, configurable via' modparam */ | |
#define BNX2I_SQ_WQES_MIN 16 | |
#define BNX2I_570X_SQ_WQES_MAX 128 | |
#define BNX2I_5770X_SQ_WQES_MAX 512 | |
#define BNX2I_570X_SQ_WQES_DEFAULT 128 | |
#define BNX2I_5770X_SQ_WQES_DEFAULT 256 | |
#define BNX2I_570X_CQ_WQES_MAX 128 | |
#define BNX2I_5770X_CQ_WQES_MAX 512 | |
#define BNX2I_RQ_WQES_MIN 16 | |
#define BNX2I_RQ_WQES_MAX 32 | |
#define BNX2I_RQ_WQES_DEFAULT 16 | |
/* CCELLs per conn */ | |
#define BNX2I_CCELLS_MIN 16 | |
#define BNX2I_CCELLS_MAX 96 | |
#define BNX2I_CCELLS_DEFAULT 64 | |
#define ITT_INVALID_SIGNATURE 0xFFFF | |
#define ISCSI_CMD_CLEANUP_TIMEOUT 100 | |
#define BNX2I_CONN_CTX_BUF_SIZE 16384 | |
#define BNX2I_SQ_WQE_SIZE 64 | |
#define BNX2I_RQ_WQE_SIZE 256 | |
#define BNX2I_CQE_SIZE 64 | |
#define MB_KERNEL_CTX_SHIFT 8 | |
#define MB_KERNEL_CTX_SIZE (1 << MB_KERNEL_CTX_SHIFT) | |
#define CTX_SHIFT 7 | |
#define GET_CID_NUM(cid_addr) ((cid_addr) >> CTX_SHIFT) | |
#define CTX_OFFSET 0x10000 | |
#define MAX_CID_CNT 0x4000 | |
/* 5709 context registers */ | |
#define BNX2_MQ_CONFIG2 0x00003d00 | |
#define BNX2_MQ_CONFIG2_CONT_SZ (0x7L<<4) | |
#define BNX2_MQ_CONFIG2_FIRST_L4L5 (0x1fL<<8) | |
/* 57710's BAR2 is mapped to doorbell registers */ | |
#define BNX2X_DOORBELL_PCI_BAR 2 | |
#define BNX2X_MAX_CQS 8 | |
#define CNIC_ARM_CQE 1 | |
#define CNIC_DISARM_CQE 0 | |
#define REG_RD(__hba, offset) \ | |
readl(__hba->regview + offset) | |
#define REG_WR(__hba, offset, val) \ | |
writel(val, __hba->regview + offset) | |
/** | |
* struct generic_pdu_resc - login pdu resource structure | |
* | |
* @req_buf: driver buffer used to stage payload associated with | |
* the login request | |
* @req_dma_addr: dma address for iscsi login request payload buffer | |
* @req_buf_size: actual login request payload length | |
* @req_wr_ptr: pointer into login request buffer when next data is | |
* to be written | |
* @resp_hdr: iscsi header where iscsi login response header is to | |
* be recreated | |
* @resp_buf: buffer to stage login response payload | |
* @resp_dma_addr: login response payload buffer dma address | |
* @resp_buf_size: login response paylod length | |
* @resp_wr_ptr: pointer into login response buffer when next data is | |
* to be written | |
* @req_bd_tbl: iscsi login request payload BD table | |
* @req_bd_dma: login request BD table dma address | |
* @resp_bd_tbl: iscsi login response payload BD table | |
* @resp_bd_dma: login request BD table dma address | |
* | |
* following structure defines buffer info for generic pdus such as iSCSI Login, | |
* Logout and NOP | |
*/ | |
struct generic_pdu_resc { | |
char *req_buf; | |
dma_addr_t req_dma_addr; | |
u32 req_buf_size; | |
char *req_wr_ptr; | |
struct iscsi_hdr resp_hdr; | |
char *resp_buf; | |
dma_addr_t resp_dma_addr; | |
u32 resp_buf_size; | |
char *resp_wr_ptr; | |
char *req_bd_tbl; | |
dma_addr_t req_bd_dma; | |
char *resp_bd_tbl; | |
dma_addr_t resp_bd_dma; | |
}; | |
/** | |
* struct bd_resc_page - tracks DMA'able memory allocated for BD tables | |
* | |
* @link: list head to link elements | |
* @max_ptrs: maximun pointers that can be stored in this page | |
* @num_valid: number of pointer valid in this page | |
* @page: base addess for page pointer array | |
* | |
* structure to track DMA'able memory allocated for command BD tables | |
*/ | |
struct bd_resc_page { | |
struct list_head link; | |
u32 max_ptrs; | |
u32 num_valid; | |
void *page[1]; | |
}; | |
/** | |
* struct io_bdt - I/O buffer destricptor table | |
* | |
* @bd_tbl: BD table's virtual address | |
* @bd_tbl_dma: BD table's dma address | |
* @bd_valid: num valid BD entries | |
* | |
* IO BD table | |
*/ | |
struct io_bdt { | |
struct iscsi_bd *bd_tbl; | |
dma_addr_t bd_tbl_dma; | |
u16 bd_valid; | |
}; | |
/** | |
* bnx2i_cmd - iscsi command structure | |
* | |
* @scsi_cmd: SCSI-ML task pointer corresponding to this iscsi cmd | |
* @sg: SG list | |
* @io_tbl: buffer descriptor (BD) table | |
* @bd_tbl_dma: buffer descriptor (BD) table's dma address | |
*/ | |
struct bnx2i_cmd { | |
struct iscsi_hdr hdr; | |
struct bnx2i_conn *conn; | |
struct scsi_cmnd *scsi_cmd; | |
struct scatterlist *sg; | |
struct io_bdt io_tbl; | |
dma_addr_t bd_tbl_dma; | |
struct bnx2i_cmd_request req; | |
}; | |
/** | |
* struct bnx2i_conn - iscsi connection structure | |
* | |
* @cls_conn: pointer to iscsi cls conn | |
* @hba: adapter structure pointer | |
* @exp_statsn: iscsi expected statsn | |
* @iscsi_conn_cid: iscsi conn id | |
* @fw_cid: firmware iscsi context id | |
* @ep: endpoint structure pointer | |
* @gen_pdu: login/nopout/logout pdu resources | |
* @violation_notified: bit mask used to track iscsi error/warning messages | |
* already printed out | |
* | |
* iSCSI connection structure | |
*/ | |
struct bnx2i_conn { | |
struct iscsi_cls_conn *cls_conn; | |
struct bnx2i_hba *hba; | |
struct completion cmd_cleanup_cmpl; | |
int is_bound; | |
u32 exp_statsn; | |
u32 iscsi_conn_cid; | |
#define BNX2I_CID_RESERVED 0x5AFF | |
u32 fw_cid; | |
struct timer_list poll_timer; | |
/* | |
* Queue Pair (QP) related structure elements. | |
*/ | |
struct bnx2i_endpoint *ep; | |
/* | |
* Buffer for login negotiation process | |
*/ | |
struct generic_pdu_resc gen_pdu; | |
u64 violation_notified; | |
}; | |
/** | |
* struct iscsi_cid_queue - Per adapter iscsi cid queue | |
* | |
* @cid_que_base: queue base memory | |
* @cid_que: queue memory pointer | |
* @cid_q_prod_idx: produce index | |
* @cid_q_cons_idx: consumer index | |
* @cid_q_max_idx: max index. used to detect wrap around condition | |
* @cid_free_cnt: queue size | |
* @conn_cid_tbl: iscsi cid to conn structure mapping table | |
* | |
* Per adapter iSCSI CID Queue | |
*/ | |
struct iscsi_cid_queue { | |
void *cid_que_base; | |
u32 *cid_que; | |
u32 cid_q_prod_idx; | |
u32 cid_q_cons_idx; | |
u32 cid_q_max_idx; | |
u32 cid_free_cnt; | |
struct bnx2i_conn **conn_cid_tbl; | |
}; | |
/** | |
* struct bnx2i_hba - bnx2i adapter structure | |
* | |
* @link: list head to link elements | |
* @cnic: pointer to cnic device | |
* @pcidev: pointer to pci dev | |
* @netdev: pointer to netdev structure | |
* @regview: mapped PCI register space | |
* @age: age, incremented by every recovery | |
* @cnic_dev_type: cnic device type, 5706/5708/5709/57710 | |
* @mail_queue_access: mailbox queue access mode, applicable to 5709 only | |
* @reg_with_cnic: indicates whether the device is register with CNIC | |
* @adapter_state: adapter state, UP, GOING_DOWN, LINK_DOWN | |
* @mtu_supported: Ethernet MTU supported | |
* @shost: scsi host pointer | |
* @max_sqes: SQ size | |
* @max_rqes: RQ size | |
* @max_cqes: CQ size | |
* @num_ccell: number of command cells per connection | |
* @ofld_conns_active: active connection list | |
* @max_active_conns: max offload connections supported by this device | |
* @cid_que: iscsi cid queue | |
* @ep_rdwr_lock: read / write lock to synchronize various ep lists | |
* @ep_ofld_list: connection list for pending offload completion | |
* @ep_destroy_list: connection list for pending offload completion | |
* @mp_bd_tbl: BD table to be used with middle path requests | |
* @mp_bd_dma: DMA address of 'mp_bd_tbl' memory buffer | |
* @dummy_buffer: Dummy buffer to be used with zero length scsicmd reqs | |
* @dummy_buf_dma: DMA address of 'dummy_buffer' memory buffer | |
* @lock: lock to synchonize access to hba structure | |
* @mac_addr: MAC address | |
* @pci_did: PCI device ID | |
* @pci_vid: PCI vendor ID | |
* @pci_sdid: PCI subsystem device ID | |
* @pci_svid: PCI subsystem vendor ID | |
* @pci_func: PCI function number in system pci tree | |
* @pci_devno: PCI device number in system pci tree | |
* @num_wqe_sent: statistic counter, total wqe's sent | |
* @num_cqe_rcvd: statistic counter, total cqe's received | |
* @num_intr_claimed: statistic counter, total interrupts claimed | |
* @link_changed_count: statistic counter, num of link change notifications | |
* received | |
* @ipaddr_changed_count: statistic counter, num times IP address changed while | |
* at least one connection is offloaded | |
* @num_sess_opened: statistic counter, total num sessions opened | |
* @num_conn_opened: statistic counter, total num conns opened on this hba | |
* @ctx_ccell_tasks: captures number of ccells and tasks supported by | |
* currently offloaded connection, used to decode | |
* context memory | |
* | |
* Adapter Data Structure | |
*/ | |
struct bnx2i_hba { | |
struct list_head link; | |
struct cnic_dev *cnic; | |
struct pci_dev *pcidev; | |
struct net_device *netdev; | |
void __iomem *regview; | |
u32 age; | |
unsigned long cnic_dev_type; | |
#define BNX2I_NX2_DEV_5706 0x0 | |
#define BNX2I_NX2_DEV_5708 0x1 | |
#define BNX2I_NX2_DEV_5709 0x2 | |
#define BNX2I_NX2_DEV_57710 0x3 | |
u32 mail_queue_access; | |
#define BNX2I_MQ_KERNEL_MODE 0x0 | |
#define BNX2I_MQ_KERNEL_BYPASS_MODE 0x1 | |
#define BNX2I_MQ_BIN_MODE 0x2 | |
unsigned long reg_with_cnic; | |
#define BNX2I_CNIC_REGISTERED 1 | |
unsigned long adapter_state; | |
#define ADAPTER_STATE_UP 0 | |
#define ADAPTER_STATE_GOING_DOWN 1 | |
#define ADAPTER_STATE_LINK_DOWN 2 | |
#define ADAPTER_STATE_INIT_FAILED 31 | |
unsigned int mtu_supported; | |
#define BNX2I_MAX_MTU_SUPPORTED 9000 | |
struct Scsi_Host *shost; | |
char mac_addr[6]; | |
u32 max_sqes; | |
u32 max_rqes; | |
u32 max_cqes; | |
u32 num_ccell; | |
int ofld_conns_active; | |
int max_active_conns; | |
struct iscsi_cid_queue cid_que; | |
rwlock_t ep_rdwr_lock; | |
struct list_head ep_ofld_list; | |
struct list_head ep_destroy_list; | |
/* | |
* BD table to be used with MP (Middle Path requests. | |
*/ | |
char *mp_bd_tbl; | |
dma_addr_t mp_bd_dma; | |
char *dummy_buffer; | |
dma_addr_t dummy_buf_dma; | |
spinlock_t lock; /* protects hba structure access */ | |
struct mutex net_dev_lock;/* sync net device access */ | |
/* | |
* PCI related info. | |
*/ | |
u16 pci_did; | |
u16 pci_vid; | |
u16 pci_sdid; | |
u16 pci_svid; | |
u16 pci_func; | |
u16 pci_devno; | |
/* | |
* Following are a bunch of statistics useful during development | |
* and later stage for score boarding. | |
*/ | |
u32 num_wqe_sent; | |
u32 num_cqe_rcvd; | |
u32 num_intr_claimed; | |
u32 link_changed_count; | |
u32 ipaddr_changed_count; | |
u32 num_sess_opened; | |
u32 num_conn_opened; | |
unsigned int ctx_ccell_tasks; | |
}; | |
/******************************************************************************* | |
* QP [ SQ / RQ / CQ ] info. | |
******************************************************************************/ | |
/* | |
* SQ/RQ/CQ generic structure definition | |
*/ | |
struct sqe { | |
u8 sqe_byte[BNX2I_SQ_WQE_SIZE]; | |
}; | |
struct rqe { | |
u8 rqe_byte[BNX2I_RQ_WQE_SIZE]; | |
}; | |
struct cqe { | |
u8 cqe_byte[BNX2I_CQE_SIZE]; | |
}; | |
enum { | |
#if defined(__LITTLE_ENDIAN) | |
CNIC_EVENT_COAL_INDEX = 0x0, | |
CNIC_SEND_DOORBELL = 0x4, | |
CNIC_EVENT_CQ_ARM = 0x7, | |
CNIC_RECV_DOORBELL = 0x8 | |
#elif defined(__BIG_ENDIAN) | |
CNIC_EVENT_COAL_INDEX = 0x2, | |
CNIC_SEND_DOORBELL = 0x6, | |
CNIC_EVENT_CQ_ARM = 0x4, | |
CNIC_RECV_DOORBELL = 0xa | |
#endif | |
}; | |
/* | |
* CQ DB | |
*/ | |
struct bnx2x_iscsi_cq_pend_cmpl { | |
/* CQ producer, updated by Ustorm */ | |
u16 ustrom_prod; | |
/* CQ pending completion counter */ | |
u16 pend_cntr; | |
}; | |
struct bnx2i_5771x_cq_db { | |
struct bnx2x_iscsi_cq_pend_cmpl qp_pend_cmpl[BNX2X_MAX_CQS]; | |
/* CQ pending completion ITT array */ | |
u16 itt[BNX2X_MAX_CQS]; | |
/* Cstorm CQ sequence to notify array, updated by driver */; | |
u16 sqn[BNX2X_MAX_CQS]; | |
u32 reserved[4] /* 16 byte allignment */; | |
}; | |
struct bnx2i_5771x_sq_rq_db { | |
u16 prod_idx; | |
u8 reserved0[14]; /* Pad structure size to 16 bytes */ | |
}; | |
struct bnx2i_5771x_dbell_hdr { | |
u8 header; | |
/* 1 for rx doorbell, 0 for tx doorbell */ | |
#define B577XX_DOORBELL_HDR_RX (0x1<<0) | |
#define B577XX_DOORBELL_HDR_RX_SHIFT 0 | |
/* 0 for normal doorbell, 1 for advertise wnd doorbell */ | |
#define B577XX_DOORBELL_HDR_DB_TYPE (0x1<<1) | |
#define B577XX_DOORBELL_HDR_DB_TYPE_SHIFT 1 | |
/* rdma tx only: DPM transaction size specifier (64/128/256/512B) */ | |
#define B577XX_DOORBELL_HDR_DPM_SIZE (0x3<<2) | |
#define B577XX_DOORBELL_HDR_DPM_SIZE_SHIFT 2 | |
/* connection type */ | |
#define B577XX_DOORBELL_HDR_CONN_TYPE (0xF<<4) | |
#define B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT 4 | |
}; | |
struct bnx2i_5771x_dbell { | |
struct bnx2i_5771x_dbell_hdr dbell; | |
u8 pad[3]; | |
}; | |
/** | |
* struct qp_info - QP (share queue region) atrributes structure | |
* | |
* @ctx_base: ioremapped pci register base to access doorbell register | |
* pertaining to this offloaded connection | |
* @sq_virt: virtual address of send queue (SQ) region | |
* @sq_phys: DMA address of SQ memory region | |
* @sq_mem_size: SQ size | |
* @sq_prod_qe: SQ producer entry pointer | |
* @sq_cons_qe: SQ consumer entry pointer | |
* @sq_first_qe: virtaul address of first entry in SQ | |
* @sq_last_qe: virtaul address of last entry in SQ | |
* @sq_prod_idx: SQ producer index | |
* @sq_cons_idx: SQ consumer index | |
* @sqe_left: number sq entry left | |
* @sq_pgtbl_virt: page table describing buffer consituting SQ region | |
* @sq_pgtbl_phys: dma address of 'sq_pgtbl_virt' | |
* @sq_pgtbl_size: SQ page table size | |
* @cq_virt: virtual address of completion queue (CQ) region | |
* @cq_phys: DMA address of RQ memory region | |
* @cq_mem_size: CQ size | |
* @cq_prod_qe: CQ producer entry pointer | |
* @cq_cons_qe: CQ consumer entry pointer | |
* @cq_first_qe: virtaul address of first entry in CQ | |
* @cq_last_qe: virtaul address of last entry in CQ | |
* @cq_prod_idx: CQ producer index | |
* @cq_cons_idx: CQ consumer index | |
* @cqe_left: number cq entry left | |
* @cqe_size: size of each CQ entry | |
* @cqe_exp_seq_sn: next expected CQE sequence number | |
* @cq_pgtbl_virt: page table describing buffer consituting CQ region | |
* @cq_pgtbl_phys: dma address of 'cq_pgtbl_virt' | |
* @cq_pgtbl_size: CQ page table size | |
* @rq_virt: virtual address of receive queue (RQ) region | |
* @rq_phys: DMA address of RQ memory region | |
* @rq_mem_size: RQ size | |
* @rq_prod_qe: RQ producer entry pointer | |
* @rq_cons_qe: RQ consumer entry pointer | |
* @rq_first_qe: virtaul address of first entry in RQ | |
* @rq_last_qe: virtaul address of last entry in RQ | |
* @rq_prod_idx: RQ producer index | |
* @rq_cons_idx: RQ consumer index | |
* @rqe_left: number rq entry left | |
* @rq_pgtbl_virt: page table describing buffer consituting RQ region | |
* @rq_pgtbl_phys: dma address of 'rq_pgtbl_virt' | |
* @rq_pgtbl_size: RQ page table size | |
* | |
* queue pair (QP) is a per connection shared data structure which is used | |
* to send work requests (SQ), receive completion notifications (CQ) | |
* and receive asynchoronous / scsi sense info (RQ). 'qp_info' structure | |
* below holds queue memory, consumer/producer indexes and page table | |
* information | |
*/ | |
struct qp_info { | |
void __iomem *ctx_base; | |
#define DPM_TRIGER_TYPE 0x40 | |
#define BNX2I_570x_QUE_DB_SIZE 0 | |
#define BNX2I_5771x_QUE_DB_SIZE 16 | |
struct sqe *sq_virt; | |
dma_addr_t sq_phys; | |
u32 sq_mem_size; | |
struct sqe *sq_prod_qe; | |
struct sqe *sq_cons_qe; | |
struct sqe *sq_first_qe; | |
struct sqe *sq_last_qe; | |
u16 sq_prod_idx; | |
u16 sq_cons_idx; | |
u32 sqe_left; | |
void *sq_pgtbl_virt; | |
dma_addr_t sq_pgtbl_phys; | |
u32 sq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */ | |
struct cqe *cq_virt; | |
dma_addr_t cq_phys; | |
u32 cq_mem_size; | |
struct cqe *cq_prod_qe; | |
struct cqe *cq_cons_qe; | |
struct cqe *cq_first_qe; | |
struct cqe *cq_last_qe; | |
u16 cq_prod_idx; | |
u16 cq_cons_idx; | |
u32 cqe_left; | |
u32 cqe_size; | |
u32 cqe_exp_seq_sn; | |
void *cq_pgtbl_virt; | |
dma_addr_t cq_pgtbl_phys; | |
u32 cq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */ | |
struct rqe *rq_virt; | |
dma_addr_t rq_phys; | |
u32 rq_mem_size; | |
struct rqe *rq_prod_qe; | |
struct rqe *rq_cons_qe; | |
struct rqe *rq_first_qe; | |
struct rqe *rq_last_qe; | |
u16 rq_prod_idx; | |
u16 rq_cons_idx; | |
u32 rqe_left; | |
void *rq_pgtbl_virt; | |
dma_addr_t rq_pgtbl_phys; | |
u32 rq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */ | |
}; | |
/* | |
* CID handles | |
*/ | |
struct ep_handles { | |
u32 fw_cid; | |
u32 drv_iscsi_cid; | |
u16 pg_cid; | |
u16 rsvd; | |
}; | |
enum { | |
EP_STATE_IDLE = 0x0, | |
EP_STATE_PG_OFLD_START = 0x1, | |
EP_STATE_PG_OFLD_COMPL = 0x2, | |
EP_STATE_OFLD_START = 0x4, | |
EP_STATE_OFLD_COMPL = 0x8, | |
EP_STATE_CONNECT_START = 0x10, | |
EP_STATE_CONNECT_COMPL = 0x20, | |
EP_STATE_ULP_UPDATE_START = 0x40, | |
EP_STATE_ULP_UPDATE_COMPL = 0x80, | |
EP_STATE_DISCONN_START = 0x100, | |
EP_STATE_DISCONN_COMPL = 0x200, | |
EP_STATE_CLEANUP_START = 0x400, | |
EP_STATE_CLEANUP_CMPL = 0x800, | |
EP_STATE_TCP_FIN_RCVD = 0x1000, | |
EP_STATE_TCP_RST_RCVD = 0x2000, | |
EP_STATE_PG_OFLD_FAILED = 0x1000000, | |
EP_STATE_ULP_UPDATE_FAILED = 0x2000000, | |
EP_STATE_CLEANUP_FAILED = 0x4000000, | |
EP_STATE_OFLD_FAILED = 0x8000000, | |
EP_STATE_CONNECT_FAILED = 0x10000000, | |
EP_STATE_DISCONN_TIMEDOUT = 0x20000000, | |
}; | |
/** | |
* struct bnx2i_endpoint - representation of tcp connection in NX2 world | |
* | |
* @link: list head to link elements | |
* @hba: adapter to which this connection belongs | |
* @conn: iscsi connection this EP is linked to | |
* @sess: iscsi session this EP is linked to | |
* @cm_sk: cnic sock struct | |
* @hba_age: age to detect if 'iscsid' issues ep_disconnect() | |
* after HBA reset is completed by bnx2i/cnic/bnx2 | |
* modules | |
* @state: tracks offload connection state machine | |
* @teardown_mode: indicates if conn teardown is abortive or orderly | |
* @qp: QP information | |
* @ids: contains chip allocated *context id* & driver assigned | |
* *iscsi cid* | |
* @ofld_timer: offload timer to detect timeout | |
* @ofld_wait: wait queue | |
* | |
* Endpoint Structure - equivalent of tcp socket structure | |
*/ | |
struct bnx2i_endpoint { | |
struct list_head link; | |
struct bnx2i_hba *hba; | |
struct bnx2i_conn *conn; | |
struct cnic_sock *cm_sk; | |
#ifdef _BNX2I_IOCTL_ | |
u16 tcp_port; | |
#endif | |
u32 hba_age; | |
u32 state; | |
unsigned long timestamp; | |
int num_active_cmds; | |
struct qp_info qp; | |
struct ep_handles ids; | |
#define ep_iscsi_cid ids.drv_iscsi_cid | |
#define ep_cid ids.fw_cid | |
#define ep_pg_cid ids.pg_cid | |
struct timer_list ofld_timer; | |
wait_queue_head_t ofld_wait; | |
}; | |
/* Global variables */ | |
extern unsigned int error_mask1, error_mask2; | |
extern u64 iscsi_error_mask; | |
extern unsigned int en_tcp_dack; | |
extern unsigned int event_coal_div; | |
extern struct scsi_transport_template *bnx2i_scsi_xport_template; | |
extern struct iscsi_transport bnx2i_iscsi_transport; | |
extern struct cnic_ulp_ops bnx2i_cnic_cb; | |
extern unsigned int sq_size; | |
extern unsigned int rq_size; | |
extern struct device_attribute *bnx2i_dev_attributes[]; | |
/* | |
* Function Prototypes | |
*/ | |
extern void bnx2i_identify_device(struct bnx2i_hba *hba); | |
extern void bnx2i_register_device(struct bnx2i_hba *hba); | |
extern void bnx2i_check_nx2_dev_busy(void); | |
extern void bnx2i_ulp_init(struct cnic_dev *dev); | |
extern void bnx2i_ulp_exit(struct cnic_dev *dev); | |
extern void bnx2i_start(void *handle); | |
extern void bnx2i_stop(void *handle); | |
extern void bnx2i_reg_dev_all(void); | |
extern void bnx2i_unreg_dev_all(void); | |
extern struct bnx2i_hba *get_adapter_list_head(void); | |
struct bnx2i_conn *bnx2i_get_conn_from_id(struct bnx2i_hba *hba, | |
u16 iscsi_cid); | |
int bnx2i_alloc_ep_pool(void); | |
void bnx2i_release_ep_pool(void); | |
struct bnx2i_endpoint *bnx2i_ep_ofld_list_next(struct bnx2i_hba *hba); | |
struct bnx2i_endpoint *bnx2i_ep_destroy_list_next(struct bnx2i_hba *hba); | |
struct bnx2i_hba *bnx2i_find_hba_for_cnic(struct cnic_dev *cnic); | |
struct bnx2i_hba *bnx2i_alloc_hba(struct cnic_dev *cnic); | |
void bnx2i_free_hba(struct bnx2i_hba *hba); | |
void bnx2i_get_rq_buf(struct bnx2i_conn *conn, char *ptr, int len); | |
void bnx2i_put_rq_buf(struct bnx2i_conn *conn, int count); | |
void bnx2i_iscsi_unmap_sg_list(struct bnx2i_cmd *cmd); | |
void bnx2i_drop_session(struct iscsi_cls_session *session); | |
extern int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba); | |
extern int bnx2i_send_iscsi_login(struct bnx2i_conn *conn, | |
struct iscsi_task *mtask); | |
extern int bnx2i_send_iscsi_tmf(struct bnx2i_conn *conn, | |
struct iscsi_task *mtask); | |
extern int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *conn, | |
struct bnx2i_cmd *cmnd); | |
extern int bnx2i_send_iscsi_nopout(struct bnx2i_conn *conn, | |
struct iscsi_task *mtask, u32 ttt, | |
char *datap, int data_len, int unsol); | |
extern int bnx2i_send_iscsi_logout(struct bnx2i_conn *conn, | |
struct iscsi_task *mtask); | |
extern void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, | |
struct bnx2i_cmd *cmd); | |
extern void bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, | |
struct bnx2i_endpoint *ep); | |
extern void bnx2i_update_iscsi_conn(struct iscsi_conn *conn); | |
extern void bnx2i_send_conn_destroy(struct bnx2i_hba *hba, | |
struct bnx2i_endpoint *ep); | |
extern int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, | |
struct bnx2i_endpoint *ep); | |
extern void bnx2i_free_qp_resc(struct bnx2i_hba *hba, | |
struct bnx2i_endpoint *ep); | |
extern void bnx2i_ep_ofld_timer(unsigned long data); | |
extern struct bnx2i_endpoint *bnx2i_find_ep_in_ofld_list( | |
struct bnx2i_hba *hba, u32 iscsi_cid); | |
extern struct bnx2i_endpoint *bnx2i_find_ep_in_destroy_list( | |
struct bnx2i_hba *hba, u32 iscsi_cid); | |
extern int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep); | |
extern void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action); | |
/* Debug related function prototypes */ | |
extern void bnx2i_print_pend_cmd_queue(struct bnx2i_conn *conn); | |
extern void bnx2i_print_active_cmd_queue(struct bnx2i_conn *conn); | |
extern void bnx2i_print_xmit_pdu_queue(struct bnx2i_conn *conn); | |
extern void bnx2i_print_recv_state(struct bnx2i_conn *conn); | |
#endif |