diff options
Diffstat (limited to 'drivers/scsi/be2iscsi/be_main.h')
| -rw-r--r-- | drivers/scsi/be2iscsi/be_main.h | 837 |
1 files changed, 837 insertions, 0 deletions
diff --git a/drivers/scsi/be2iscsi/be_main.h b/drivers/scsi/be2iscsi/be_main.h new file mode 100644 index 000000000000..53c9b70ac7ac --- /dev/null +++ b/drivers/scsi/be2iscsi/be_main.h @@ -0,0 +1,837 @@ +/** + * Copyright (C) 2005 - 2009 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/in.h> +#include <linux/blk-iopoll.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 "2.0.527.0" + +#define BE_NAME "ServerEngines BladeEngine2" \ + "Linux iSCSI Driver version" BUILD_STR +#define DRV_DESC BE_NAME " " "Driver" + +#define BE_VENDOR_ID 0x19A2 +#define BE_DEVICE_ID1 0x212 +#define OC_DEVICE_ID1 0x702 +#define OC_DEVICE_ID2 0x703 + +#define BE2_MAX_SESSIONS 64 +#define BE2_CMDS_PER_CXN 128 +#define BE2_LOGOUTS BE2_MAX_SESSIONS +#define BE2_TMFS 16 +#define BE2_NOPOUT_REQ 16 +#define BE2_ASYNCPDUS BE2_MAX_SESSIONS +#define BE2_MAX_ICDS 2048 +#define BE2_SGE 32 +#define BE2_DEFPDU_HDR_SZ 64 +#define BE2_DEFPDU_DATA_SZ 8192 +#define BE2_IO_DEPTH \ + (BE2_MAX_ICDS / 2 - (BE2_LOGOUTS + BE2_TMFS + BE2_NOPOUT_REQ)) + +#define BEISCSI_SGLIST_ELEMENTS BE2_SGE + +#define BEISCSI_MAX_CMNDS 1024 /* Max IO's per Ctrlr sht->can_queue */ +#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_SEMAPHORE 0xac + +#define BE_SENSE_INFO_SIZE 258 +#define BE_ISCSI_PDU_HEADER_SIZE 64 +#define BE_MIN_MEM_SIZE 16384 + +#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); + +/** + * 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_CQ, + HWI_MEM_EQ, + HWI_MEM_WRB, + HWI_MEM_WRBH, + HWI_MEM_SGLH, /* 5 */ + HWI_MEM_SGE, + HWI_MEM_ASYNC_HEADER_BUF, + HWI_MEM_ASYNC_DATA_BUF, + HWI_MEM_ASYNC_HEADER_RING, + HWI_MEM_ASYNC_DATA_RING, /* 10 */ + HWI_MEM_ASYNC_HEADER_HANDLE, + HWI_MEM_ASYNC_DATA_HANDLE, + HWI_MEM_ASYNC_PDU_CONTEXT, + ISCSI_MEM_GLOBAL_HEADER, + SE_MEM_MAX /* 15 */ +}; + +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; + 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 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; + struct blk_iopoll iopoll; + 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; + + 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 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; + 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; +}; + +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 sgl_handle *plogin_sgl_handle; + struct beiscsi_session *beiscsi_sess; +}; + +/* 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; + + 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; +}; + +#define BE_MIN_ASYNC_ENTRIES 128 + +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[BE_MIN_ASYNC_ENTRIES]; +}; + +#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, + int index); +void +free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle); + +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; + unsigned short cq_errors[CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN]; +}; + +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 { + struct be_eq_obj be_eq; + struct be_queue_info be_cq; + struct be_queue_info be_mcc_cq; + struct be_queue_info be_mcc; + + 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 |