/**
* Copyright (C) 2005 - 2010 ServerEngines
* All rights reserved.
*
* 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. The full GNU General
* Public License is included in this distribution in the file called COPYING.
*
* Written by: Jayamohan Kallickal (jayamohank@serverengines.com)
*
* Contact Information:
* linux-drivers@serverengines.com
*
* ServerEngines
* 209 N. Fair Oaks Ave
* Sunnyvale, CA 94085
*
*/
#ifndef _BEISCSI_MAIN_
#define _BEISCSI_MAIN_
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/if_ether.h>
#include <linux/in.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/iscsi_proto.h>
#include <scsi/libiscsi.h>
#include <scsi/scsi_transport_iscsi.h>
#include "be.h"
#define DRV_NAME "be2iscsi"
#define BUILD_STR "2.0.549.0"
#define BE_NAME "ServerEngines BladeEngine2" \
"Linux iSCSI Driver version" BUILD_STR
#define DRV_DESC BE_NAME " " "Driver"
#define BE_VENDOR_ID 0x19A2
/* DEVICE ID's for BE2 */
#define BE_DEVICE_ID1 0x212
#define OC_DEVICE_ID1 0x702
#define OC_DEVICE_ID2 0x703
/* DEVICE ID's for BE3 */
#define BE_DEVICE_ID2 0x222
#define OC_DEVICE_ID3 0x712
#define BE2_IO_DEPTH 1024
#define BE2_MAX_SESSIONS 256
#define BE2_CMDS_PER_CXN 128
#define BE2_TMFS 16
#define BE2_NOPOUT_REQ 16
#define BE2_SGE 32
#define BE2_DEFPDU_HDR_SZ 64
#define BE2_DEFPDU_DATA_SZ 8192
#define MAX_CPUS 31
#define BEISCSI_SGLIST_ELEMENTS 30
#define BEISCSI_CMD_PER_LUN 128 /* scsi_host->cmd_per_lun */
#define BEISCSI_MAX_SECTORS 2048 /* scsi_host->max_sectors */
#define BEISCSI_MAX_CMD_LEN 16 /* scsi_host->max_cmd_len */
#define BEISCSI_NUM_MAX_LUN 256 /* scsi_host->max_lun */
#define BEISCSI_NUM_DEVICES_SUPPORTED 0x01
#define BEISCSI_MAX_FRAGS_INIT 192
#define BE_NUM_MSIX_ENTRIES 1
#define MPU_EP_CONTROL 0
#define MPU_EP_SEMAPHORE 0xac
#define BE2_SOFT_RESET 0x5c
#define BE2_PCI_ONLINE0 0xb0
#define BE2_PCI_ONLINE1 0xb4
#define BE2_SET_RESET 0x80
#define BE2_MPU_IRAM_ONLINE 0x00000080
#define BE_SENSE_INFO_SIZE 258
#define BE_ISCSI_PDU_HEADER_SIZE 64
#define BE_MIN_MEM_SIZE 16384
#define MAX_CMD_SZ 65536
#define IIOC_SCSI_DATA 0x05 /* Write Operation */
#define DBG_LVL 0x00000001
#define DBG_LVL_1 0x00000001
#define DBG_LVL_2 0x00000002
#define DBG_LVL_3 0x00000004
#define DBG_LVL_4 0x00000008
#define DBG_LVL_5 0x00000010
#define DBG_LVL_6 0x00000020
#define DBG_LVL_7 0x00000040
#define DBG_LVL_8 0x00000080
#define SE_DEBUG(debug_mask, fmt, args...) \
do { \
if (debug_mask & DBG_LVL) { \
printk(KERN_ERR "(%s():%d):", __func__, __LINE__);\
printk(fmt, ##args); \
} \
} while (0);
#define BE_ADAPTER_UP 0x00000000
#define BE_ADAPTER_LINK_DOWN 0x00000001
/**
* hardware needs the async PDU buffers to be posted in multiples of 8
* So have atleast 8 of them by default
*/
#define HWI_GET_ASYNC_PDU_CTX(phwi) (phwi->phwi_ctxt->pasync_ctx)
/********* Memory BAR register ************/
#define PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET 0xfc
/**
* Host Interrupt Enable, if set interrupts are enabled although "PCI Interrupt
* Disable" may still globally block interrupts in addition to individual
* interrupt masks; a mechanism for the device driver to block all interrupts
* atomically without having to arbitrate for the PCI Interrupt Disable bit
* with the OS.
*/
#define MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK (1 << 29) /* bit 29 */
/********* ISR0 Register offset **********/
#define CEV_ISR0_OFFSET 0xC18
#define CEV_ISR_SIZE 4
/**
* Macros for reading/writing a protection domain or CSR registers
* in BladeEngine.
*/
#define DB_TXULP0_OFFSET 0x40
#define DB_RXULP0_OFFSET 0xA0
/********* Event Q door bell *************/
#define DB_EQ_OFFSET DB_CQ_OFFSET
#define DB_EQ_RING_ID_MASK 0x1FF /* bits 0 - 8 */
/* Clear the interrupt for this eq */
#define DB_EQ_CLR_SHIFT (9) /* bit 9 */
/* Must be 1 */
#define DB_EQ_EVNT_SHIFT (10) /* bit 10 */
/* Number of event entries processed */
#define DB_EQ_NUM_POPPED_SHIFT (16) /* bits 16 - 28 */
/* Rearm bit */
#define DB_EQ_REARM_SHIFT (29) /* bit 29 */
/********* Compl Q door bell *************/
#define DB_CQ_OFFSET 0x120
#define DB_CQ_RING_ID_MASK 0x3FF /* bits 0 - 9 */
/* Number of event entries processed */
#define DB_CQ_NUM_POPPED_SHIFT (16) /* bits 16 - 28 */
/* Rearm bit */
#define DB_CQ_REARM_SHIFT (29) /* bit 29 */
#define GET_HWI_CONTROLLER_WS(pc) (pc->phwi_ctrlr)
#define HWI_GET_DEF_BUFQ_ID(pc) (((struct hwi_controller *)\
(GET_HWI_CONTROLLER_WS(pc)))->default_pdu_data.id)
#define HWI_GET_DEF_HDRQ_ID(pc) (((struct hwi_controller *)\
(GET_HWI_CONTROLLER_WS(pc)))->default_pdu_hdr.id)
#define PAGES_REQUIRED(x) \
((x < PAGE_SIZE) ? 1 : ((x + PAGE_SIZE - 1) / PAGE_SIZE))
enum be_mem_enum {
HWI_MEM_ADDN_CONTEXT,
HWI_MEM_WRB,
HWI_MEM_WRBH,
HWI_MEM_SGLH,
HWI_MEM_SGE,
HWI_MEM_ASYNC_HEADER_BUF, /* 5 */
HWI_MEM_ASYNC_DATA_BUF,
HWI_MEM_ASYNC_HEADER_RING,
HWI_MEM_ASYNC_DATA_RING,
HWI_MEM_ASYNC_HEADER_HANDLE,
HWI_MEM_ASYNC_DATA_HANDLE, /* 10 */
HWI_MEM_ASYNC_PDU_CONTEXT,
ISCSI_MEM_GLOBAL_HEADER,
SE_MEM_MAX
};
struct be_bus_address32 {
unsigned int address_lo;
unsigned int address_hi;
};
struct be_bus_address64 {
unsigned long long address;
};
struct be_bus_address {
union {
struct be_bus_address32 a32;
struct be_bus_address64 a64;
} u;
};
struct mem_array {
struct be_bus_address bus_address; /* Bus address of location */
void *virtual_address; /* virtual address to the location */
unsigned int size; /* Size required by memory block */
};
struct be_mem_descriptor {
unsigned int index; /* Index of this memory parameter */
unsigned int category; /* type indicates cached/non-cached */
unsigned int num_elements; /* number of elements in this
* descriptor
*/
unsigned int alignment_mask; /* Alignment mask for this block */
unsigned int size_in_bytes; /* Size required by memory block */
struct mem_array *mem_array;
};
struct sgl_handle {
unsigned int sgl_index;
unsigned int type;
unsigned int cid;
struct iscsi_task *task;
struct iscsi_sge *pfrag;
};
struct hba_parameters {
unsigned int ios_per_ctrl;
unsigned int cxns_per_ctrl;
unsigned int asyncpdus_per_ctrl;
unsigned int icds_per_ctrl;
unsigned int num_sge_per_io;
unsigned int defpdu_hdr_sz;
unsigned int defpdu_data_sz;
unsigned int num_cq_entries;
unsigned int num_eq_entries;
unsigned int wrbs_per_cxn;
unsigned int crashmode;
unsigned int hba_num;
unsigned int mgmt_ws_sz;
unsigned int hwi_ws_sz;
unsigned int eto;
unsigned int ldto;
unsigned int dbg_flags;
unsigned int num_cxn;
unsigned int eq_timer;
/**
* These are calculated from other params. They're here
* for debug purposes
*/
unsigned int num_mcc_pages;
unsigned int num_mcc_cq_pages;
unsigned int num_cq_pages;
unsigned int num_eq_pages;
unsigned int num_async_pdu_buf_pages;
unsigned int num_async_pdu_buf_sgl_pages;
unsigned int num_async_pdu_buf_cq_pages;
unsigned int num_async_pdu_hdr_pages;
unsigned int num_async_pdu_hdr_sgl_pages;
unsigned int num_async_pdu_hdr_cq_pages;
unsigned int num_sge;
};
struct invalidate_command_table {
unsigned short icd;
unsigned short cid;
} __packed;
struct beiscsi_hba {
struct hba_parameters params;
struct hwi_controller *phwi_ctrlr;
unsigned int mem_req[SE_MEM_MAX];
/* PCI BAR mapped addresses */
u8 __iomem *csr_va; /* CSR */
u8 __iomem *db_va; /* Door Bell */
u8 __iomem *pci_va; /* PCI Config */
struct be_bus_address csr_pa; /* CSR */
struct be_bus_address db_pa; /* CSR */
struct be_bus_address pci_pa; /* CSR */
/* PCI representation of our HBA */
struct pci_dev *pcidev;
unsigned int state;
unsigned short asic_revision;
unsigned int num_cpus;
unsigned int nxt_cqid;
struct msix_entry msix_entries[MAX_CPUS + 1];
bool msix_enabled;
struct be_mem_descriptor *init_mem;
unsigned short io_sgl_alloc_index;
unsigned short io_sgl_free_index;
unsigned short io_sgl_hndl_avbl;
struct sgl_handle **io_sgl_hndl_base;
struct sgl_handle **sgl_hndl_array;
unsigned short eh_sgl_alloc_index;
unsigned short eh_sgl_free_index;
unsigned short eh_sgl_hndl_avbl;
struct sgl_handle **eh_sgl_hndl_base;
spinlock_t io_sgl_lock;
spinlock_t mgmt_sgl_lock;
spinlock_t isr_lock;
unsigned int age;
unsigned short avlbl_cids;
unsigned short cid_alloc;
unsigned short cid_free;
struct beiscsi_conn *conn_table[BE2_MAX_SESSIONS * 2];
struct list_head hba_queue;
unsigned short *cid_array;
struct iscsi_endpoint **ep_array;
struct iscsi_boot_kset *boot_kset;
struct Scsi_Host *shost;
struct {
/**
* group together since they are used most frequently
* for cid to cri conversion
*/
unsigned int iscsi_cid_start;
unsigned int phys_port;
unsigned int isr_offset;
unsigned int iscsi_icd_start;
unsigned int iscsi_cid_count;
unsigned int iscsi_icd_count;
unsigned int pci_function;
unsigned short cid_alloc;
unsigned short cid_free;
unsigned short avlbl_cids;
unsigned short iscsi_features;
spinlock_t cid_lock;
} fw_config;
u8 mac_address[ETH_ALEN];
unsigned short todo_cq;
unsigned short todo_mcc_cq;
char wq_name[20];
struct workqueue_struct *wq; /* The actuak work queue */
struct work_struct work_cqs; /* The work being queued */
struct be_ctrl_info ctrl;
unsigned int generation;
unsigned int read_mac_address;
struct mgmt_session_info boot_sess;
struct invalidate_command_table inv_tbl[128];
};
struct beiscsi_session {
struct pci_pool *bhs_pool;
};
/**
* struct beiscsi_conn - iscsi connection structure
*/
struct beiscsi_conn {
struct iscsi_conn *conn;
struct beiscsi_hba *phba;
u32 exp_statsn;
u32 beiscsi_conn_cid;
struct beiscsi_endpoint *ep;
unsigned short login_in_progress;
struct wrb_handle *plogin_wrb_handle;
struct sgl_handle *plogin_sgl_handle;
struct beiscsi_session *beiscsi_sess;
struct iscsi_task *task;
};
/* This structure is used by the chip */
struct pdu_data_out {
u32 dw[12];
};
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte: used to calculate offset/shift/mask of each field
*/
struct amap_pdu_data_out {
u8 opcode[6]; /* opcode */
u8 rsvd0[2]; /* should be 0 */
u8 rsvd1[7];
u8 final_bit; /* F bit */
u8 rsvd2[16];
u8 ahs_length[8]; /* no AHS */
u8 data_len_hi[8];
u8 data_len_lo[16]; /* DataSegmentLength */
u8 lun[64];
u8 itt[32]; /* ITT; initiator task tag */
u8 ttt[32]; /* TTT; valid for R2T or 0xffffffff */
u8 rsvd3[32];
u8 exp_stat_sn[32];
u8 rsvd4[32];
u8 data_sn[32];
u8 buffer_offset[32];
u8 rsvd5[32];
};
struct be_cmd_bhs {
struct iscsi_cmd iscsi_hdr;
unsigned char pad1[16];
struct pdu_data_out iscsi_data_pdu;
unsigned char pad2[BE_SENSE_INFO_SIZE -
sizeof(struct pdu_data_out)];
};
struct beiscsi_io_task {
struct wrb_handle *pwrb_handle;
struct sgl_handle *psgl_handle;
struct beiscsi_conn *conn;
struct scsi_cmnd *scsi_cmnd;
unsigned int cmd_sn;
unsigned int flags;
unsigned short cid;
unsigned short header_len;
itt_t libiscsi_itt;
struct be_cmd_bhs *cmd_bhs;
struct be_bus_address bhs_pa;
unsigned short bhs_len;
};
struct be_nonio_bhs {
struct iscsi_hdr iscsi_hdr;
unsigned char pad1[16];
struct pdu_data_out iscsi_data_pdu;
unsigned char pad2[BE_SENSE_INFO_SIZE -
sizeof(struct pdu_data_out)];
};
struct be_status_bhs {
struct iscsi_cmd iscsi_hdr;
unsigned char pad1[16];
/**
* The plus 2 below is to hold the sense info length that gets
* DMA'ed by RxULP
*/
unsigned char sense_info[BE_SENSE_INFO_SIZE];
};
struct iscsi_sge {
u32 dw[4];
};
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte: used to calculate offset/shift/mask of each field
*/
struct amap_iscsi_sge {
u8 addr_hi[32];
u8 addr_lo[32];
u8 sge_offset[22]; /* DWORD 2 */
u8 rsvd0[9]; /* DWORD 2 */
u8 last_sge; /* DWORD 2 */
u8 len[17]; /* DWORD 3 */
u8 rsvd1[15]; /* DWORD 3 */
};
struct beiscsi_offload_params {
u32 dw[5];
};
#define OFFLD_PARAMS_ERL 0x00000003
#define OFFLD_PARAMS_DDE 0x00000004
#define OFFLD_PARAMS_HDE 0x00000008
#define OFFLD_PARAMS_IR2T 0x00000010
#define OFFLD_PARAMS_IMD 0x00000020
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte: used to calculate offset/shift/mask of each field
*/
struct amap_beiscsi_offload_params {
u8 max_burst_length[32];
u8 max_send_data_segment_length[32];
u8 first_burst_length[32];
u8 erl[2];
u8 dde[1];
u8 hde[1];
u8 ir2t[1];
u8 imd[1];
u8 pad[26];
u8 exp_statsn[32];
};
/* void hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
struct beiscsi_hba *phba, struct sol_cqe *psol);*/
struct async_pdu_handle {
struct list_head link;
struct be_bus_address pa;
void *pbuffer;
unsigned int consumed;
unsigned char index;
unsigned char is_header;
unsigned short cri;
unsigned long buffer_len;
};
struct hwi_async_entry {
struct {
unsigned char hdr_received;
unsigned char hdr_len;
unsigned short bytes_received;
unsigned int bytes_needed;
struct list_head list;
} wait_queue;
struct list_head header_busy_list;
struct list_head data_busy_list;
};
struct hwi_async_pdu_context {
struct {
struct be_bus_address pa_base;
void *va_base;
void *ring_base;
struct async_pdu_handle *handle_base;
unsigned int host_write_ptr;
unsigned int ep_read_ptr;
unsigned int writables;
unsigned int free_entries;
unsigned int busy_entries;
unsigned int buffer_size;
unsigned int num_entries;
struct list_head free_list;
} async_header;
struct {
struct be_bus_address pa_base;
void *va_base;
void *ring_base;
struct async_pdu_handle *handle_base;
unsigned int host_write_ptr;
unsigned int ep_read_ptr;
unsigned int writables;
unsigned int free_entries;
unsigned int busy_entries;
unsigned int buffer_size;
struct list_head free_list;
unsigned int num_entries;
} async_data;
/**
* This is a varying size list! Do not add anything
* after this entry!!
*/
struct hwi_async_entry async_entry[BE2_MAX_SESSIONS * 2];
};
#define PDUCQE_CODE_MASK 0x0000003F
#define PDUCQE_DPL_MASK 0xFFFF0000
#define PDUCQE_INDEX_MASK 0x0000FFFF
struct i_t_dpdu_cqe {
u32 dw[4];
} __packed;
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte: used to calculate offset/shift/mask of each field
*/
struct amap_i_t_dpdu_cqe {
u8 db_addr_hi[32];
u8 db_addr_lo[32];
u8 code[6];
u8 cid[10];
u8 dpl[16];
u8 index[16];
u8 num_cons[10];
u8 rsvd0[4];
u8 final;
u8 valid;
} __packed;
#define CQE_VALID_MASK 0x80000000
#define CQE_CODE_MASK 0x0000003F
#define CQE_CID_MASK 0x0000FFC0
#define EQE_VALID_MASK 0x00000001
#define EQE_MAJORCODE_MASK 0x0000000E
#define EQE_RESID_MASK 0xFFFF0000
struct be_eq_entry {
u32 dw[1];
} __packed;
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte: used to calculate offset/shift/mask of each field
*/
struct amap_eq_entry {
u8 valid; /* DWORD 0 */
u8 major_code[3]; /* DWORD 0 */
u8 minor_code[12]; /* DWORD 0 */
u8 resource_id[16]; /* DWORD 0 */
} __packed;
struct cq_db {
u32 dw[1];
} __packed;
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte: used to calculate offset/shift/mask of each field
*/
struct amap_cq_db {
u8 qid[10];
u8 event[1];
u8 rsvd0[5];
u8 num_popped[13];
u8 rearm[1];
u8 rsvd1[2];
} __packed;
void beiscsi_process_eq(struct beiscsi_hba *phba);
struct iscsi_wrb {
u32 dw[16];
} __packed;
#define WRB_TYPE_MASK 0xF0000000
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte: used to calculate offset/shift/mask of each field
*/
struct amap_iscsi_wrb {
u8 lun[14]; /* DWORD 0 */
u8 lt; /* DWORD 0 */
u8 invld; /* DWORD 0 */
u8 wrb_idx[8]; /* DWORD 0 */
u8 dsp; /* DWORD 0 */
u8 dmsg; /* DWORD 0 */
u8 undr_run; /* DWORD 0 */
u8 over_run; /* DWORD 0 */
u8 type[4]; /* DWORD 0 */
u8 ptr2nextwrb[8]; /* DWORD 1 */
u8 r2t_exp_dtl[24]; /* DWORD 1 */
u8 sgl_icd_idx[12]; /* DWORD 2 */
u8 rsvd0[20]; /* DWORD 2 */
u8 exp_data_sn[32]; /* DWORD 3 */
u8 iscsi_bhs_addr_hi[32]; /* DWORD 4 */
u8 iscsi_bhs_addr_lo[32]; /* DWORD 5 */
u8 cmdsn_itt[32]; /* DWORD 6 */
u8 dif_ref_tag[32]; /* DWORD 7 */
u8 sge0_addr_hi[32]; /* DWORD 8 */
u8 sge0_addr_lo[32]; /* DWORD 9 */
u8 sge0_offset[22]; /* DWORD 10 */
u8 pbs; /* DWORD 10 */
u8 dif_mode[2]; /* DWORD 10 */
u8 rsvd1[6]; /* DWORD 10 */
u8 sge0_last; /* DWORD 10 */
u8 sge0_len[17]; /* DWORD 11 */
u8 dif_meta_tag[14]; /* DWORD 11 */
u8 sge0_in_ddr; /* DWORD 11 */
u8 sge1_addr_hi[32]; /* DWORD 12 */
u8 sge1_addr_lo[32]; /* DWORD 13 */
u8 sge1_r2t_offset[22]; /* DWORD 14 */
u8 rsvd2[9]; /* DWORD 14 */
u8 sge1_last; /* DWORD 14 */
u8 sge1_len[17]; /* DWORD 15 */
u8 ref_sgl_icd_idx[12]; /* DWORD 15 */
u8 rsvd3[2]; /* DWORD 15 */
u8 sge1_in_ddr; /* DWORD 15 */
} __packed;
struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid);
void
free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle);
void beiscsi_process_all_cqs(struct work_struct *work);
struct pdu_nop_out {
u32 dw[12];
};
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte: used to calculate offset/shift/mask of each field
*/
struct amap_pdu_nop_out {
u8 opcode[6]; /* opcode 0x00 */
u8 i_bit; /* I Bit */
u8 x_bit; /* reserved; should be 0 */
u8 fp_bit_filler1[7];
u8 f_bit; /* always 1 */
u8 reserved1[16];
u8 ahs_length[8]; /* no AHS */
u8 data_len_hi[8];
u8 data_len_lo[16]; /* DataSegmentLength */
u8 lun[64];
u8 itt[32]; /* initiator id for ping or 0xffffffff */
u8 ttt[32]; /* target id for ping or 0xffffffff */
u8 cmd_sn[32];
u8 exp_stat_sn[32];
u8 reserved5[128];
};
#define PDUBASE_OPCODE_MASK 0x0000003F
#define PDUBASE_DATALENHI_MASK 0x0000FF00
#define PDUBASE_DATALENLO_MASK 0xFFFF0000
struct pdu_base {
u32 dw[16];
} __packed;
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte: used to calculate offset/shift/mask of each field
*/
struct amap_pdu_base {
u8 opcode[6];
u8 i_bit; /* immediate bit */
u8 x_bit; /* reserved, always 0 */
u8 reserved1[24]; /* opcode-specific fields */
u8 ahs_length[8]; /* length units is 4 byte words */
u8 data_len_hi[8];
u8 data_len_lo[16]; /* DatasegmentLength */
u8 lun[64]; /* lun or opcode-specific fields */
u8 itt[32]; /* initiator task tag */
u8 reserved4[224];
};
struct iscsi_target_context_update_wrb {
u32 dw[16];
} __packed;
/**
* Pseudo amap definition in which each bit of the actual structure is defined
* as a byte: used to calculate offset/shift/mask of each field
*/
struct amap_iscsi_target_context_update_wrb {
u8 lun[14]; /* DWORD 0 */
u8 lt; /* DWORD 0 */
u8 invld; /* DWORD 0 */
u8 wrb_idx[8]; /* DWORD 0 */
u8 dsp; /* DWORD 0 */
u8 dmsg; /* DWORD 0 */
u8 undr_run; /* DWORD 0 */
u8 over_run; /* DWORD 0 */
u8 type[4]; /* DWORD 0 */
u8 ptr2nextwrb[8]; /* DWORD 1 */
u8 max_burst_length[19]; /* DWORD 1 */
u8 rsvd0[5]; /* DWORD 1 */
u8 rsvd1[15]; /* DWORD 2 */
u8 max_send_data_segment_length[17]; /* DWORD 2 */
u8 first_burst_length[14]; /* DWORD 3 */
u8 rsvd2[2]; /* DWORD 3 */
u8 tx_wrbindex_drv_msg[8]; /* DWORD 3 */
u8 rsvd3[5]; /* DWORD 3 */
u8 session_state[3]; /* DWORD 3 */
u8 rsvd4[16]; /* DWORD 4 */
u8 tx_jumbo; /* DWORD 4 */
u8 hde; /* DWORD 4 */
u8 dde; /* DWORD 4 */
u8 erl[2]; /* DWORD 4 */
u8 domain_id[5]; /* DWORD 4 */
u8 mode; /* DWORD 4 */
u8 imd; /* DWORD 4 */
u8 ir2t; /* DWORD 4 */
u8 notpredblq[2]; /* DWORD 4 */
u8 compltonack; /* DWORD 4 */
u8 stat_sn[32]; /* DWORD 5 */
u8 pad_buffer_addr_hi[32]; /* DWORD 6 */
u8 pad_buffer_addr_lo[32]; /* DWORD 7 */
u8 pad_addr_hi[32]; /* DWORD 8 */
u8 pad_addr_lo[32]; /* DWORD 9 */
u8 rsvd5[32]; /* DWORD 10 */
u8 rsvd6[32]; /* DWORD 11 */
u8 rsvd7[32]; /* DWORD 12 */
u8 rsvd8[32]; /* DWORD 13 */
u8 rsvd9[32]; /* DWORD 14 */
u8 rsvd10[32]; /* DWORD 15 */
} __packed;
struct be_ring {
u32 pages; /* queue size in pages */
u32 id; /* queue id assigned by beklib */
u32 num; /* number of elements in queue */
u32 cidx; /* consumer index */
u32 pidx; /* producer index -- not used by most rings */
u32 item_size; /* size in bytes of one object */
void *va; /* The virtual address of the ring. This
* should be last to allow 32 & 64 bit debugger
* extensions to work.
*/
};
struct hwi_wrb_context {
struct list_head wrb_handle_list;
struct list_head wrb_handle_drvr_list;
struct wrb_handle **pwrb_handle_base;
struct wrb_handle **pwrb_handle_basestd;
struct iscsi_wrb *plast_wrb;
unsigned short alloc_index;
unsigned short free_index;
unsigned short wrb_handles_available;
unsigned short cid;
};
struct hwi_controller {
struct list_head io_sgl_list;
struct list_head eh_sgl_list;
struct sgl_handle *psgl_handle_base;
unsigned int wrb_mem_index;
struct hwi_wrb_context wrb_context[BE2_MAX_SESSIONS * 2];
struct mcc_wrb *pmcc_wrb_base;
struct be_ring default_pdu_hdr;
struct be_ring default_pdu_data;
struct hwi_context_memory *phwi_ctxt;
};
enum hwh_type_enum {
HWH_TYPE_IO = 1,
HWH_TYPE_LOGOUT = 2,
HWH_TYPE_TMF = 3,
HWH_TYPE_NOP = 4,
HWH_TYPE_IO_RD = 5,
HWH_TYPE_LOGIN = 11,
HWH_TYPE_INVALID = 0xFFFFFFFF
};
struct wrb_handle {
enum hwh_type_enum type;
unsigned short wrb_index;
unsigned short nxt_wrb_index;
struct iscsi_task *pio_handle;
struct iscsi_wrb *pwrb;
};
struct hwi_context_memory {
/* Adaptive interrupt coalescing (AIC) info */
u16 min_eqd; /* in usecs */
u16 max_eqd; /* in usecs */
u16 cur_eqd; /* in usecs */
struct be_eq_obj be_eq[MAX_CPUS];
struct be_queue_info be_cq[MAX_CPUS];
struct be_queue_info be_def_hdrq;
struct be_queue_info be_def_dataq;
struct be_queue_info be_wrbq[BE2_MAX_SESSIONS];
struct be_mcc_wrb_context *pbe_mcc_context;
struct hwi_async_pdu_context *pasync_ctx;
};
#endif