2 * Copyright (C) 2005 - 2009 ServerEngines
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation. The full GNU General
8 * Public License is included in this distribution in the file called COPYING.
10 * Written by: Jayamohan Kallickal (jayamohank@serverengines.com)
12 * Contact Information:
13 * linux-drivers@serverengines.com
16 * 209 N. Fair Oaks Ave
21 #ifndef _BEISCSI_MAIN_
22 #define _BEISCSI_MAIN_
24 #include <linux/kernel.h>
25 #include <linux/pci.h>
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_cmnd.h>
29 #include <scsi/scsi_device.h>
30 #include <scsi/scsi_host.h>
31 #include <scsi/iscsi_proto.h>
32 #include <scsi/libiscsi.h>
33 #include <scsi/scsi_transport_iscsi.h>
36 #define DRV_NAME "be2iscsi"
37 #define BUILD_STR "2.0.527.0"
38 #define BE_NAME "ServerEngines BladeEngine2" \
39 "Linux iSCSI Driver version" BUILD_STR
40 #define DRV_DESC BE_NAME " " "Driver"
42 #define BE_VENDOR_ID 0x19A2
43 #define BE_DEVICE_ID1 0x212
44 #define OC_DEVICE_ID1 0x702
45 #define OC_DEVICE_ID2 0x703
46 #define OC_DEVICE_ID3 0x712
47 #define OC_DEVICE_ID4 0x222
49 #define BE2_MAX_SESSIONS 64
50 #define BE2_CMDS_PER_CXN 128
51 #define BE2_LOGOUTS BE2_MAX_SESSIONS
53 #define BE2_NOPOUT_REQ 16
54 #define BE2_ASYNCPDUS BE2_MAX_SESSIONS
55 #define BE2_MAX_ICDS 2048
57 #define BE2_DEFPDU_HDR_SZ 64
58 #define BE2_DEFPDU_DATA_SZ 8192
59 #define BE2_IO_DEPTH \
60 (BE2_MAX_ICDS / 2 - (BE2_LOGOUTS + BE2_TMFS + BE2_NOPOUT_REQ))
63 #define BEISCSI_SGLIST_ELEMENTS BE2_SGE
65 #define BEISCSI_MAX_CMNDS 1024 /* Max IO's per Ctrlr sht->can_queue */
66 #define BEISCSI_CMD_PER_LUN 128 /* scsi_host->cmd_per_lun */
67 #define BEISCSI_MAX_SECTORS 2048 /* scsi_host->max_sectors */
69 #define BEISCSI_MAX_CMD_LEN 16 /* scsi_host->max_cmd_len */
70 #define BEISCSI_NUM_MAX_LUN 256 /* scsi_host->max_lun */
71 #define BEISCSI_NUM_DEVICES_SUPPORTED 0x01
72 #define BEISCSI_MAX_FRAGS_INIT 192
73 #define BE_NUM_MSIX_ENTRIES 1
74 #define MPU_EP_SEMAPHORE 0xac
76 #define BE_SENSE_INFO_SIZE 258
77 #define BE_ISCSI_PDU_HEADER_SIZE 64
78 #define BE_MIN_MEM_SIZE 16384
79 #define MAX_CMD_SZ 65536
80 #define IIOC_SCSI_DATA 0x05 /* Write Operation */
82 #define DBG_LVL 0x00000001
83 #define DBG_LVL_1 0x00000001
84 #define DBG_LVL_2 0x00000002
85 #define DBG_LVL_3 0x00000004
86 #define DBG_LVL_4 0x00000008
87 #define DBG_LVL_5 0x00000010
88 #define DBG_LVL_6 0x00000020
89 #define DBG_LVL_7 0x00000040
90 #define DBG_LVL_8 0x00000080
92 #define SE_DEBUG(debug_mask, fmt, args...) \
94 if (debug_mask & DBG_LVL) { \
95 printk(KERN_ERR "(%s():%d):", __func__, __LINE__);\
96 printk(fmt, ##args); \
100 #define BE_ADAPTER_UP 0x00000000
101 #define BE_ADAPTER_LINK_DOWN 0x00000001
103 * hardware needs the async PDU buffers to be posted in multiples of 8
104 * So have atleast 8 of them by default
107 #define HWI_GET_ASYNC_PDU_CTX(phwi) (phwi->phwi_ctxt->pasync_ctx)
109 /********* Memory BAR register ************/
110 #define PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET 0xfc
112 * Host Interrupt Enable, if set interrupts are enabled although "PCI Interrupt
113 * Disable" may still globally block interrupts in addition to individual
114 * interrupt masks; a mechanism for the device driver to block all interrupts
115 * atomically without having to arbitrate for the PCI Interrupt Disable bit
118 #define MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK (1 << 29) /* bit 29 */
120 /********* ISR0 Register offset **********/
121 #define CEV_ISR0_OFFSET 0xC18
122 #define CEV_ISR_SIZE 4
125 * Macros for reading/writing a protection domain or CSR registers
129 #define DB_TXULP0_OFFSET 0x40
130 #define DB_RXULP0_OFFSET 0xA0
131 /********* Event Q door bell *************/
132 #define DB_EQ_OFFSET DB_CQ_OFFSET
133 #define DB_EQ_RING_ID_MASK 0x1FF /* bits 0 - 8 */
134 /* Clear the interrupt for this eq */
135 #define DB_EQ_CLR_SHIFT (9) /* bit 9 */
137 #define DB_EQ_EVNT_SHIFT (10) /* bit 10 */
138 /* Number of event entries processed */
139 #define DB_EQ_NUM_POPPED_SHIFT (16) /* bits 16 - 28 */
141 #define DB_EQ_REARM_SHIFT (29) /* bit 29 */
143 /********* Compl Q door bell *************/
144 #define DB_CQ_OFFSET 0x120
145 #define DB_CQ_RING_ID_MASK 0x3FF /* bits 0 - 9 */
146 /* Number of event entries processed */
147 #define DB_CQ_NUM_POPPED_SHIFT (16) /* bits 16 - 28 */
149 #define DB_CQ_REARM_SHIFT (29) /* bit 29 */
151 #define GET_HWI_CONTROLLER_WS(pc) (pc->phwi_ctrlr)
152 #define HWI_GET_DEF_BUFQ_ID(pc) (((struct hwi_controller *)\
153 (GET_HWI_CONTROLLER_WS(pc)))->default_pdu_data.id)
154 #define HWI_GET_DEF_HDRQ_ID(pc) (((struct hwi_controller *)\
155 (GET_HWI_CONTROLLER_WS(pc)))->default_pdu_hdr.id)
157 #define PAGES_REQUIRED(x) \
158 ((x < PAGE_SIZE) ? 1 : ((x + PAGE_SIZE - 1) / PAGE_SIZE))
161 HWI_MEM_ADDN_CONTEXT,
166 HWI_MEM_ASYNC_HEADER_BUF, /* 5 */
167 HWI_MEM_ASYNC_DATA_BUF,
168 HWI_MEM_ASYNC_HEADER_RING,
169 HWI_MEM_ASYNC_DATA_RING,
170 HWI_MEM_ASYNC_HEADER_HANDLE,
171 HWI_MEM_ASYNC_DATA_HANDLE, /* 10 */
172 HWI_MEM_ASYNC_PDU_CONTEXT,
173 ISCSI_MEM_GLOBAL_HEADER,
177 struct be_bus_address32 {
178 unsigned int address_lo;
179 unsigned int address_hi;
182 struct be_bus_address64 {
183 unsigned long long address;
186 struct be_bus_address {
188 struct be_bus_address32 a32;
189 struct be_bus_address64 a64;
194 struct be_bus_address bus_address; /* Bus address of location */
195 void *virtual_address; /* virtual address to the location */
196 unsigned int size; /* Size required by memory block */
199 struct be_mem_descriptor {
200 unsigned int index; /* Index of this memory parameter */
201 unsigned int category; /* type indicates cached/non-cached */
202 unsigned int num_elements; /* number of elements in this
205 unsigned int alignment_mask; /* Alignment mask for this block */
206 unsigned int size_in_bytes; /* Size required by memory block */
207 struct mem_array *mem_array;
211 unsigned int sgl_index;
214 struct iscsi_task *task;
215 struct iscsi_sge *pfrag;
218 struct hba_parameters {
219 unsigned int ios_per_ctrl;
220 unsigned int cxns_per_ctrl;
221 unsigned int asyncpdus_per_ctrl;
222 unsigned int icds_per_ctrl;
223 unsigned int num_sge_per_io;
224 unsigned int defpdu_hdr_sz;
225 unsigned int defpdu_data_sz;
226 unsigned int num_cq_entries;
227 unsigned int num_eq_entries;
228 unsigned int wrbs_per_cxn;
229 unsigned int crashmode;
230 unsigned int hba_num;
232 unsigned int mgmt_ws_sz;
233 unsigned int hwi_ws_sz;
238 unsigned int dbg_flags;
239 unsigned int num_cxn;
241 unsigned int eq_timer;
243 * These are calculated from other params. They're here
246 unsigned int num_mcc_pages;
247 unsigned int num_mcc_cq_pages;
248 unsigned int num_cq_pages;
249 unsigned int num_eq_pages;
251 unsigned int num_async_pdu_buf_pages;
252 unsigned int num_async_pdu_buf_sgl_pages;
253 unsigned int num_async_pdu_buf_cq_pages;
255 unsigned int num_async_pdu_hdr_pages;
256 unsigned int num_async_pdu_hdr_sgl_pages;
257 unsigned int num_async_pdu_hdr_cq_pages;
259 unsigned int num_sge;
263 struct hba_parameters params;
264 struct hwi_controller *phwi_ctrlr;
265 unsigned int mem_req[SE_MEM_MAX];
266 /* PCI BAR mapped addresses */
267 u8 __iomem *csr_va; /* CSR */
268 u8 __iomem *db_va; /* Door Bell */
269 u8 __iomem *pci_va; /* PCI Config */
270 struct be_bus_address csr_pa; /* CSR */
271 struct be_bus_address db_pa; /* CSR */
272 struct be_bus_address pci_pa; /* CSR */
273 /* PCI representation of our HBA */
274 struct pci_dev *pcidev;
276 unsigned short asic_revision;
277 unsigned int num_cpus;
278 unsigned int nxt_cqid;
279 struct msix_entry msix_entries[MAX_CPUS + 1];
281 struct be_mem_descriptor *init_mem;
283 unsigned short io_sgl_alloc_index;
284 unsigned short io_sgl_free_index;
285 unsigned short io_sgl_hndl_avbl;
286 struct sgl_handle **io_sgl_hndl_base;
287 struct sgl_handle **sgl_hndl_array;
289 unsigned short eh_sgl_alloc_index;
290 unsigned short eh_sgl_free_index;
291 unsigned short eh_sgl_hndl_avbl;
292 struct sgl_handle **eh_sgl_hndl_base;
293 spinlock_t io_sgl_lock;
294 spinlock_t mgmt_sgl_lock;
297 unsigned short avlbl_cids;
298 unsigned short cid_alloc;
299 unsigned short cid_free;
300 struct beiscsi_conn *conn_table[BE2_MAX_SESSIONS * 2];
301 struct list_head hba_queue;
302 unsigned short *cid_array;
303 struct iscsi_endpoint **ep_array;
304 struct Scsi_Host *shost;
307 * group together since they are used most frequently
308 * for cid to cri conversion
310 unsigned int iscsi_cid_start;
311 unsigned int phys_port;
313 unsigned int isr_offset;
314 unsigned int iscsi_icd_start;
315 unsigned int iscsi_cid_count;
316 unsigned int iscsi_icd_count;
317 unsigned int pci_function;
319 unsigned short cid_alloc;
320 unsigned short cid_free;
321 unsigned short avlbl_cids;
322 unsigned short iscsi_features;
326 u8 mac_address[ETH_ALEN];
327 unsigned short todo_cq;
328 unsigned short todo_mcc_cq;
330 struct workqueue_struct *wq; /* The actuak work queue */
331 struct work_struct work_cqs; /* The work being queued */
332 struct be_ctrl_info ctrl;
335 struct beiscsi_session {
336 struct pci_pool *bhs_pool;
340 * struct beiscsi_conn - iscsi connection structure
342 struct beiscsi_conn {
343 struct iscsi_conn *conn;
344 struct beiscsi_hba *phba;
346 u32 beiscsi_conn_cid;
347 struct beiscsi_endpoint *ep;
348 unsigned short login_in_progress;
349 struct sgl_handle *plogin_sgl_handle;
350 struct beiscsi_session *beiscsi_sess;
351 struct iscsi_task *task;
354 /* This structure is used by the chip */
355 struct pdu_data_out {
359 * Pseudo amap definition in which each bit of the actual structure is defined
360 * as a byte: used to calculate offset/shift/mask of each field
362 struct amap_pdu_data_out {
363 u8 opcode[6]; /* opcode */
364 u8 rsvd0[2]; /* should be 0 */
366 u8 final_bit; /* F bit */
368 u8 ahs_length[8]; /* no AHS */
370 u8 data_len_lo[16]; /* DataSegmentLength */
372 u8 itt[32]; /* ITT; initiator task tag */
373 u8 ttt[32]; /* TTT; valid for R2T or 0xffffffff */
378 u8 buffer_offset[32];
383 struct iscsi_cmd iscsi_hdr;
384 unsigned char pad1[16];
385 struct pdu_data_out iscsi_data_pdu;
386 unsigned char pad2[BE_SENSE_INFO_SIZE -
387 sizeof(struct pdu_data_out)];
390 struct beiscsi_io_task {
391 struct wrb_handle *pwrb_handle;
392 struct sgl_handle *psgl_handle;
393 struct beiscsi_conn *conn;
394 struct scsi_cmnd *scsi_cmnd;
398 unsigned short header_len;
400 struct be_cmd_bhs *cmd_bhs;
401 struct be_bus_address bhs_pa;
402 unsigned short bhs_len;
405 struct be_nonio_bhs {
406 struct iscsi_hdr iscsi_hdr;
407 unsigned char pad1[16];
408 struct pdu_data_out iscsi_data_pdu;
409 unsigned char pad2[BE_SENSE_INFO_SIZE -
410 sizeof(struct pdu_data_out)];
413 struct be_status_bhs {
414 struct iscsi_cmd iscsi_hdr;
415 unsigned char pad1[16];
417 * The plus 2 below is to hold the sense info length that gets
420 unsigned char sense_info[BE_SENSE_INFO_SIZE];
428 * Pseudo amap definition in which each bit of the actual structure is defined
429 * as a byte: used to calculate offset/shift/mask of each field
431 struct amap_iscsi_sge {
434 u8 sge_offset[22]; /* DWORD 2 */
435 u8 rsvd0[9]; /* DWORD 2 */
436 u8 last_sge; /* DWORD 2 */
437 u8 len[17]; /* DWORD 3 */
438 u8 rsvd1[15]; /* DWORD 3 */
441 struct beiscsi_offload_params {
445 #define OFFLD_PARAMS_ERL 0x00000003
446 #define OFFLD_PARAMS_DDE 0x00000004
447 #define OFFLD_PARAMS_HDE 0x00000008
448 #define OFFLD_PARAMS_IR2T 0x00000010
449 #define OFFLD_PARAMS_IMD 0x00000020
452 * Pseudo amap definition in which each bit of the actual structure is defined
453 * as a byte: used to calculate offset/shift/mask of each field
455 struct amap_beiscsi_offload_params {
456 u8 max_burst_length[32];
457 u8 max_send_data_segment_length[32];
458 u8 first_burst_length[32];
468 /* void hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
469 struct beiscsi_hba *phba, struct sol_cqe *psol);*/
471 struct async_pdu_handle {
472 struct list_head link;
473 struct be_bus_address pa;
475 unsigned int consumed;
477 unsigned char is_header;
479 unsigned long buffer_len;
482 struct hwi_async_entry {
484 unsigned char hdr_received;
485 unsigned char hdr_len;
486 unsigned short bytes_received;
487 unsigned int bytes_needed;
488 struct list_head list;
491 struct list_head header_busy_list;
492 struct list_head data_busy_list;
495 #define BE_MIN_ASYNC_ENTRIES 128
497 struct hwi_async_pdu_context {
499 struct be_bus_address pa_base;
502 struct async_pdu_handle *handle_base;
504 unsigned int host_write_ptr;
505 unsigned int ep_read_ptr;
506 unsigned int writables;
508 unsigned int free_entries;
509 unsigned int busy_entries;
510 unsigned int buffer_size;
511 unsigned int num_entries;
513 struct list_head free_list;
517 struct be_bus_address pa_base;
520 struct async_pdu_handle *handle_base;
522 unsigned int host_write_ptr;
523 unsigned int ep_read_ptr;
524 unsigned int writables;
526 unsigned int free_entries;
527 unsigned int busy_entries;
528 unsigned int buffer_size;
529 struct list_head free_list;
530 unsigned int num_entries;
534 * This is a varying size list! Do not add anything
537 struct hwi_async_entry async_entry[BE_MIN_ASYNC_ENTRIES];
540 #define PDUCQE_CODE_MASK 0x0000003F
541 #define PDUCQE_DPL_MASK 0xFFFF0000
542 #define PDUCQE_INDEX_MASK 0x0000FFFF
544 struct i_t_dpdu_cqe {
549 * Pseudo amap definition in which each bit of the actual structure is defined
550 * as a byte: used to calculate offset/shift/mask of each field
552 struct amap_i_t_dpdu_cqe {
565 #define CQE_VALID_MASK 0x80000000
566 #define CQE_CODE_MASK 0x0000003F
567 #define CQE_CID_MASK 0x0000FFC0
569 #define EQE_VALID_MASK 0x00000001
570 #define EQE_MAJORCODE_MASK 0x0000000E
571 #define EQE_RESID_MASK 0xFFFF0000
578 * Pseudo amap definition in which each bit of the actual structure is defined
579 * as a byte: used to calculate offset/shift/mask of each field
581 struct amap_eq_entry {
582 u8 valid; /* DWORD 0 */
583 u8 major_code[3]; /* DWORD 0 */
584 u8 minor_code[12]; /* DWORD 0 */
585 u8 resource_id[16]; /* DWORD 0 */
594 * Pseudo amap definition in which each bit of the actual structure is defined
595 * as a byte: used to calculate offset/shift/mask of each field
606 void beiscsi_process_eq(struct beiscsi_hba *phba);
612 #define WRB_TYPE_MASK 0xF0000000
615 * Pseudo amap definition in which each bit of the actual structure is defined
616 * as a byte: used to calculate offset/shift/mask of each field
618 struct amap_iscsi_wrb {
619 u8 lun[14]; /* DWORD 0 */
621 u8 invld; /* DWORD 0 */
622 u8 wrb_idx[8]; /* DWORD 0 */
623 u8 dsp; /* DWORD 0 */
624 u8 dmsg; /* DWORD 0 */
625 u8 undr_run; /* DWORD 0 */
626 u8 over_run; /* DWORD 0 */
627 u8 type[4]; /* DWORD 0 */
628 u8 ptr2nextwrb[8]; /* DWORD 1 */
629 u8 r2t_exp_dtl[24]; /* DWORD 1 */
630 u8 sgl_icd_idx[12]; /* DWORD 2 */
631 u8 rsvd0[20]; /* DWORD 2 */
632 u8 exp_data_sn[32]; /* DWORD 3 */
633 u8 iscsi_bhs_addr_hi[32]; /* DWORD 4 */
634 u8 iscsi_bhs_addr_lo[32]; /* DWORD 5 */
635 u8 cmdsn_itt[32]; /* DWORD 6 */
636 u8 dif_ref_tag[32]; /* DWORD 7 */
637 u8 sge0_addr_hi[32]; /* DWORD 8 */
638 u8 sge0_addr_lo[32]; /* DWORD 9 */
639 u8 sge0_offset[22]; /* DWORD 10 */
640 u8 pbs; /* DWORD 10 */
641 u8 dif_mode[2]; /* DWORD 10 */
642 u8 rsvd1[6]; /* DWORD 10 */
643 u8 sge0_last; /* DWORD 10 */
644 u8 sge0_len[17]; /* DWORD 11 */
645 u8 dif_meta_tag[14]; /* DWORD 11 */
646 u8 sge0_in_ddr; /* DWORD 11 */
647 u8 sge1_addr_hi[32]; /* DWORD 12 */
648 u8 sge1_addr_lo[32]; /* DWORD 13 */
649 u8 sge1_r2t_offset[22]; /* DWORD 14 */
650 u8 rsvd2[9]; /* DWORD 14 */
651 u8 sge1_last; /* DWORD 14 */
652 u8 sge1_len[17]; /* DWORD 15 */
653 u8 ref_sgl_icd_idx[12]; /* DWORD 15 */
654 u8 rsvd3[2]; /* DWORD 15 */
655 u8 sge1_in_ddr; /* DWORD 15 */
659 struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid,
662 free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle);
669 * Pseudo amap definition in which each bit of the actual structure is defined
670 * as a byte: used to calculate offset/shift/mask of each field
672 struct amap_pdu_nop_out {
673 u8 opcode[6]; /* opcode 0x00 */
674 u8 i_bit; /* I Bit */
675 u8 x_bit; /* reserved; should be 0 */
676 u8 fp_bit_filler1[7];
677 u8 f_bit; /* always 1 */
679 u8 ahs_length[8]; /* no AHS */
681 u8 data_len_lo[16]; /* DataSegmentLength */
683 u8 itt[32]; /* initiator id for ping or 0xffffffff */
684 u8 ttt[32]; /* target id for ping or 0xffffffff */
690 #define PDUBASE_OPCODE_MASK 0x0000003F
691 #define PDUBASE_DATALENHI_MASK 0x0000FF00
692 #define PDUBASE_DATALENLO_MASK 0xFFFF0000
699 * Pseudo amap definition in which each bit of the actual structure is defined
700 * as a byte: used to calculate offset/shift/mask of each field
702 struct amap_pdu_base {
704 u8 i_bit; /* immediate bit */
705 u8 x_bit; /* reserved, always 0 */
706 u8 reserved1[24]; /* opcode-specific fields */
707 u8 ahs_length[8]; /* length units is 4 byte words */
709 u8 data_len_lo[16]; /* DatasegmentLength */
710 u8 lun[64]; /* lun or opcode-specific fields */
711 u8 itt[32]; /* initiator task tag */
715 struct iscsi_target_context_update_wrb {
720 * Pseudo amap definition in which each bit of the actual structure is defined
721 * as a byte: used to calculate offset/shift/mask of each field
723 struct amap_iscsi_target_context_update_wrb {
724 u8 lun[14]; /* DWORD 0 */
726 u8 invld; /* DWORD 0 */
727 u8 wrb_idx[8]; /* DWORD 0 */
728 u8 dsp; /* DWORD 0 */
729 u8 dmsg; /* DWORD 0 */
730 u8 undr_run; /* DWORD 0 */
731 u8 over_run; /* DWORD 0 */
732 u8 type[4]; /* DWORD 0 */
733 u8 ptr2nextwrb[8]; /* DWORD 1 */
734 u8 max_burst_length[19]; /* DWORD 1 */
735 u8 rsvd0[5]; /* DWORD 1 */
736 u8 rsvd1[15]; /* DWORD 2 */
737 u8 max_send_data_segment_length[17]; /* DWORD 2 */
738 u8 first_burst_length[14]; /* DWORD 3 */
739 u8 rsvd2[2]; /* DWORD 3 */
740 u8 tx_wrbindex_drv_msg[8]; /* DWORD 3 */
741 u8 rsvd3[5]; /* DWORD 3 */
742 u8 session_state[3]; /* DWORD 3 */
743 u8 rsvd4[16]; /* DWORD 4 */
744 u8 tx_jumbo; /* DWORD 4 */
745 u8 hde; /* DWORD 4 */
746 u8 dde; /* DWORD 4 */
747 u8 erl[2]; /* DWORD 4 */
748 u8 domain_id[5]; /* DWORD 4 */
749 u8 mode; /* DWORD 4 */
750 u8 imd; /* DWORD 4 */
751 u8 ir2t; /* DWORD 4 */
752 u8 notpredblq[2]; /* DWORD 4 */
753 u8 compltonack; /* DWORD 4 */
754 u8 stat_sn[32]; /* DWORD 5 */
755 u8 pad_buffer_addr_hi[32]; /* DWORD 6 */
756 u8 pad_buffer_addr_lo[32]; /* DWORD 7 */
757 u8 pad_addr_hi[32]; /* DWORD 8 */
758 u8 pad_addr_lo[32]; /* DWORD 9 */
759 u8 rsvd5[32]; /* DWORD 10 */
760 u8 rsvd6[32]; /* DWORD 11 */
761 u8 rsvd7[32]; /* DWORD 12 */
762 u8 rsvd8[32]; /* DWORD 13 */
763 u8 rsvd9[32]; /* DWORD 14 */
764 u8 rsvd10[32]; /* DWORD 15 */
769 u32 pages; /* queue size in pages */
770 u32 id; /* queue id assigned by beklib */
771 u32 num; /* number of elements in queue */
772 u32 cidx; /* consumer index */
773 u32 pidx; /* producer index -- not used by most rings */
774 u32 item_size; /* size in bytes of one object */
776 void *va; /* The virtual address of the ring. This
777 * should be last to allow 32 & 64 bit debugger
778 * extensions to work.
782 struct hwi_wrb_context {
783 struct list_head wrb_handle_list;
784 struct list_head wrb_handle_drvr_list;
785 struct wrb_handle **pwrb_handle_base;
786 struct wrb_handle **pwrb_handle_basestd;
787 struct iscsi_wrb *plast_wrb;
788 unsigned short alloc_index;
789 unsigned short free_index;
790 unsigned short wrb_handles_available;
794 struct hwi_controller {
795 struct list_head io_sgl_list;
796 struct list_head eh_sgl_list;
797 struct sgl_handle *psgl_handle_base;
798 unsigned int wrb_mem_index;
800 struct hwi_wrb_context wrb_context[BE2_MAX_SESSIONS * 2];
801 struct mcc_wrb *pmcc_wrb_base;
802 struct be_ring default_pdu_hdr;
803 struct be_ring default_pdu_data;
804 struct hwi_context_memory *phwi_ctxt;
805 unsigned short cq_errors[CXN_KILLED_CMND_DATA_NOT_ON_SAME_CONN];
815 HWH_TYPE_INVALID = 0xFFFFFFFF
819 enum hwh_type_enum type;
820 unsigned short wrb_index;
821 unsigned short nxt_wrb_index;
823 struct iscsi_task *pio_handle;
824 struct iscsi_wrb *pwrb;
827 struct hwi_context_memory {
828 /* Adaptive interrupt coalescing (AIC) info */
829 u16 min_eqd; /* in usecs */
830 u16 max_eqd; /* in usecs */
831 u16 cur_eqd; /* in usecs */
832 struct be_eq_obj be_eq[MAX_CPUS];
833 struct be_queue_info be_cq[MAX_CPUS];
835 struct be_queue_info be_def_hdrq;
836 struct be_queue_info be_def_dataq;
838 struct be_queue_info be_wrbq[BE2_MAX_SESSIONS];
839 struct be_mcc_wrb_context *pbe_mcc_context;
841 struct hwi_async_pdu_context *pasync_ctx;