| /* bnx2i.h: QLogic NetXtreme II iSCSI driver. |
| * |
| * Copyright (c) 2006 - 2013 Broadcom Corporation |
| * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved. |
| * Copyright (c) 2007, 2008 Mike Christie |
| * Copyright (c) 2014, QLogic Corporation |
| * |
| * 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) |
| * Previously Maintained by: Eddie Wai (eddie.wai@broadcom.com) |
| * Maintained by: QLogic-Storage-Upstream@qlogic.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/delay.h> |
| #include <linux/sched/signal.h> |
| #include <linux/in.h> |
| #include <linux/kfifo.h> |
| #include <linux/netdevice.h> |
| #include <linux/completion.h> |
| #include <linux/kthread.h> |
| #include <linux/cpu.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> |
| |
| #include "../../net/ethernet/broadcom/cnic_if.h" |
| #include "57xx_iscsi_hsi.h" |
| #include "57xx_iscsi_constants.h" |
| |
| #include "../../net/ethernet/broadcom/bnx2x/bnx2x_mfw_req.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 BNX2X_DB_SHIFT 3 |
| |
| /* 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 128 |
| |
| #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 |
| |
| #define BNX2I_570X_PAGE_SIZE_DEFAULT 4096 |
| |
| /* 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_ARM_CQE_FP 2 |
| #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) |
| |
| #ifdef CONFIG_32BIT |
| #define GET_STATS_64(__hba, dst, field) \ |
| do { \ |
| spin_lock_bh(&__hba->stat_lock); \ |
| dst->field##_lo = __hba->stats.field##_lo; \ |
| dst->field##_hi = __hba->stats.field##_hi; \ |
| spin_unlock_bh(&__hba->stat_lock); \ |
| } while (0) |
| |
| #define ADD_STATS_64(__hba, field, len) \ |
| do { \ |
| if (spin_trylock(&__hba->stat_lock)) { \ |
| if (__hba->stats.field##_lo + len < \ |
| __hba->stats.field##_lo) \ |
| __hba->stats.field##_hi++; \ |
| __hba->stats.field##_lo += len; \ |
| spin_unlock(&__hba->stat_lock); \ |
| } \ |
| } while (0) |
| |
| #else |
| #define GET_STATS_64(__hba, dst, field) \ |
| do { \ |
| u64 val, *out; \ |
| \ |
| val = __hba->bnx2i_stats.field; \ |
| out = (u64 *)&__hba->stats.field##_lo; \ |
| *out = cpu_to_le64(val); \ |
| out = (u64 *)&dst->field##_lo; \ |
| *out = cpu_to_le64(val); \ |
| } while (0) |
| |
| #define ADD_STATS_64(__hba, field, len) \ |
| do { \ |
| __hba->bnx2i_stats.field += len; \ |
| } while (0) |
| #endif |
| |
| /** |
| * 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 |
| * |
| * @hdr: iSCSI header |
| * @conn: iscsi_conn pointer |
| * @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 |
| * @req: bnx2i specific command request struct |
| */ |
| 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 |
| * @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 |
| * @work_cnt: keeps track of the number of outstanding work |
| * |
| * iSCSI connection structure |
| */ |
| struct bnx2i_conn { |
| struct iscsi_cls_conn *cls_conn; |
| struct bnx2i_hba *hba; |
| struct completion cmd_cleanup_cmpl; |
| |
| 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; |
| |
| atomic_t work_cnt; |
| }; |
| |
| |
| |
| /** |
| * 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_stats_info { |
| u64 rx_pdus; |
| u64 rx_bytes; |
| u64 tx_pdus; |
| u64 tx_bytes; |
| }; |
| |
| |
| /** |
| * 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 |
| * @eh_wait: wait queue for the endpoint to shutdown |
| * @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_active_list: connection list for active offload endpoints |
| * @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 |
| * @hba_shutdown_tmo: Timeout value to shutdown each connection |
| * @conn_teardown_tmo: Timeout value to tear down each connection |
| * @conn_ctx_destroy_tmo: Timeout value to destroy context of each connection |
| * @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 |
| * @stat_lock: spin lock used by the statistic collector (32 bit) |
| * @stats: local iSCSI statistic collection place holder |
| * |
| * 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; |
| resource_size_t reg_base; |
| |
| 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; |
| |
| u32 max_sqes; |
| u32 max_rqes; |
| u32 max_cqes; |
| u32 num_ccell; |
| |
| int ofld_conns_active; |
| wait_queue_head_t eh_wait; |
| |
| 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_active_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 */ |
| |
| int hba_shutdown_tmo; |
| int conn_teardown_tmo; |
| int conn_ctx_destroy_tmo; |
| /* |
| * 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; |
| |
| #ifdef CONFIG_32BIT |
| spinlock_t stat_lock; |
| #endif |
| struct bnx2i_stats_info bnx2i_stats; |
| struct iscsi_stats_info stats; |
| }; |
| |
| |
| /******************************************************************************* |
| * 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[62]; /* Pad structure size to 64 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: virtual address of first entry in SQ |
| * @sq_last_qe: virtual 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: virtual address of first entry in CQ |
| * @cq_last_qe: virtual 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: virtual address of first entry in RQ |
| * @rq_last_qe: virtual 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_LOGOUT_SENT = 0x4000, |
| EP_STATE_LOGOUT_RESP_RCVD = 0x8000, |
| 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, |
| EP_STATE_OFLD_FAILED_CID_BUSY = 0x80000000, |
| }; |
| |
| /** |
| * 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 |
| * @cls_ep: associated iSCSI endpoint pointer |
| * @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 |
| * @timestamp: tracks the start time when the ep begins to connect |
| * @num_active_cmds: tracks the number of outstanding commands for this ep |
| * @ec_shift: the amount of shift as part of the event coal calc |
| * @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 iscsi_endpoint *cls_ep; |
| struct cnic_sock *cm_sk; |
| u32 hba_age; |
| u32 state; |
| unsigned long timestamp; |
| atomic_t num_active_cmds; |
| u32 ec_shift; |
| |
| 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; |
| }; |
| |
| |
| struct bnx2i_work { |
| struct list_head list; |
| struct iscsi_session *session; |
| struct bnx2i_conn *bnx2i_conn; |
| struct cqe cqe; |
| }; |
| |
| struct bnx2i_percpu_s { |
| struct task_struct *iothread; |
| struct list_head work_list; |
| spinlock_t p_work_lock; |
| }; |
| |
| |
| /* 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 unsigned int event_coal_min; |
| |
| 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, struct cnic_dev *dev); |
| |
| 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 int bnx2i_get_stats(void *handle); |
| |
| 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_text(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, |
| 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 int bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, |
| struct bnx2i_endpoint *ep); |
| extern void bnx2i_update_iscsi_conn(struct iscsi_conn *conn); |
| extern int 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 int bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action); |
| |
| extern int bnx2i_hw_ep_disconnect(struct bnx2i_endpoint *bnx2i_ep); |
| |
| /* 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); |
| |
| extern int bnx2i_percpu_io_thread(void *arg); |
| extern int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, |
| struct bnx2i_conn *bnx2i_conn, |
| struct cqe *cqe); |
| #endif |