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Linux 3.3-rc1
[zen-stable.git] / drivers / scsi / be2iscsi / be_main.h
blobb4a06d5e5f9eeac939215365df3efb9323c4e5fc
1 /**
2 * Copyright (C) 2005 - 2011 Emulex
3 * All rights reserved.
4 *
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.
9 *
10 * Written by: Jayamohan Kallickal (jayamohan.kallickal@emulex.com)
11 *
12 * Contact Information:
13 * linux-drivers@emulex.com
14 *
15 * Emulex
16 * 3333 Susan Street
17 * Costa Mesa, CA 92626
18 */
19
20 #ifndef _BEISCSI_MAIN_
21 #define _BEISCSI_MAIN_
22
23 #include <linux/kernel.h>
24 #include <linux/pci.h>
25 #include <linux/if_ether.h>
26 #include <linux/in.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>
34
35 #include "be.h"
36 #define DRV_NAME "be2iscsi"
37 #define BUILD_STR "4.1.239.0"
38 #define BE_NAME "ServerEngines BladeEngine2" \
39 "Linux iSCSI Driver version" BUILD_STR
40 #define DRV_DESC BE_NAME " " "Driver"
41
42 #define BE_VENDOR_ID 0x19A2
43 /* DEVICE ID's for BE2 */
44 #define BE_DEVICE_ID1 0x212
45 #define OC_DEVICE_ID1 0x702
46 #define OC_DEVICE_ID2 0x703
47
48 /* DEVICE ID's for BE3 */
49 #define BE_DEVICE_ID2 0x222
50 #define OC_DEVICE_ID3 0x712
51
52 #define BE2_IO_DEPTH 1024
53 #define BE2_MAX_SESSIONS 256
54 #define BE2_CMDS_PER_CXN 128
55 #define BE2_TMFS 16
56 #define BE2_NOPOUT_REQ 16
57 #define BE2_SGE 32
58 #define BE2_DEFPDU_HDR_SZ 64
59 #define BE2_DEFPDU_DATA_SZ 8192
60
61 #define MAX_CPUS 31
62 #define BEISCSI_SGLIST_ELEMENTS 30
63
64 #define BEISCSI_CMD_PER_LUN 128 /* scsi_host->cmd_per_lun */
65 #define BEISCSI_MAX_SECTORS 2048 /* scsi_host->max_sectors */
66
67 #define BEISCSI_MAX_CMD_LEN 16 /* scsi_host->max_cmd_len */
68 #define BEISCSI_NUM_MAX_LUN 256 /* scsi_host->max_lun */
69 #define BEISCSI_NUM_DEVICES_SUPPORTED 0x01
70 #define BEISCSI_MAX_FRAGS_INIT 192
71 #define BE_NUM_MSIX_ENTRIES 1
72
73 #define MPU_EP_CONTROL 0
74 #define MPU_EP_SEMAPHORE 0xac
75 #define BE2_SOFT_RESET 0x5c
76 #define BE2_PCI_ONLINE0 0xb0
77 #define BE2_PCI_ONLINE1 0xb4
78 #define BE2_SET_RESET 0x80
79 #define BE2_MPU_IRAM_ONLINE 0x00000080
80
81 #define BE_SENSE_INFO_SIZE 258
82 #define BE_ISCSI_PDU_HEADER_SIZE 64
83 #define BE_MIN_MEM_SIZE 16384
84 #define MAX_CMD_SZ 65536
85 #define IIOC_SCSI_DATA 0x05 /* Write Operation */
86
87 #define DBG_LVL 0x00000001
88 #define DBG_LVL_1 0x00000001
89 #define DBG_LVL_2 0x00000002
90 #define DBG_LVL_3 0x00000004
91 #define DBG_LVL_4 0x00000008
92 #define DBG_LVL_5 0x00000010
93 #define DBG_LVL_6 0x00000020
94 #define DBG_LVL_7 0x00000040
95 #define DBG_LVL_8 0x00000080
96
97 #define SE_DEBUG(debug_mask, fmt, args...) \
98 do { \
99 if (debug_mask & DBG_LVL) { \
100 printk(KERN_ERR "(%s():%d):", __func__, __LINE__);\
101 printk(fmt, ##args); \
102 } \
103 } while (0);
104
105 #define BE_ADAPTER_UP 0x00000000
106 #define BE_ADAPTER_LINK_DOWN 0x00000001
107 /**
108 * hardware needs the async PDU buffers to be posted in multiples of 8
109 * So have atleast 8 of them by default
110 */
111
112 #define HWI_GET_ASYNC_PDU_CTX(phwi) (phwi->phwi_ctxt->pasync_ctx)
113
114 /********* Memory BAR register ************/
115 #define PCICFG_MEMBAR_CTRL_INT_CTRL_OFFSET 0xfc
116 /**
117 * Host Interrupt Enable, if set interrupts are enabled although "PCI Interrupt
118 * Disable" may still globally block interrupts in addition to individual
119 * interrupt masks; a mechanism for the device driver to block all interrupts
120 * atomically without having to arbitrate for the PCI Interrupt Disable bit
121 * with the OS.
122 */
123 #define MEMBAR_CTRL_INT_CTRL_HOSTINTR_MASK (1 << 29) /* bit 29 */
124
125 /********* ISR0 Register offset **********/
126 #define CEV_ISR0_OFFSET 0xC18
127 #define CEV_ISR_SIZE 4
128
129 /**
130 * Macros for reading/writing a protection domain or CSR registers
131 * in BladeEngine.
132 */
133
134 #define DB_TXULP0_OFFSET 0x40
135 #define DB_RXULP0_OFFSET 0xA0
136 /********* Event Q door bell *************/
137 #define DB_EQ_OFFSET DB_CQ_OFFSET
138 #define DB_EQ_RING_ID_MASK 0x1FF /* bits 0 - 8 */
139 /* Clear the interrupt for this eq */
140 #define DB_EQ_CLR_SHIFT (9) /* bit 9 */
141 /* Must be 1 */
142 #define DB_EQ_EVNT_SHIFT (10) /* bit 10 */
143 /* Number of event entries processed */
144 #define DB_EQ_NUM_POPPED_SHIFT (16) /* bits 16 - 28 */
145 /* Rearm bit */
146 #define DB_EQ_REARM_SHIFT (29) /* bit 29 */
147
148 /********* Compl Q door bell *************/
149 #define DB_CQ_OFFSET 0x120
150 #define DB_CQ_RING_ID_MASK 0x3FF /* bits 0 - 9 */
151 /* Number of event entries processed */
152 #define DB_CQ_NUM_POPPED_SHIFT (16) /* bits 16 - 28 */
153 /* Rearm bit */
154 #define DB_CQ_REARM_SHIFT (29) /* bit 29 */
155
156 #define GET_HWI_CONTROLLER_WS(pc) (pc->phwi_ctrlr)
157 #define HWI_GET_DEF_BUFQ_ID(pc) (((struct hwi_controller *)\
158 (GET_HWI_CONTROLLER_WS(pc)))->default_pdu_data.id)
159 #define HWI_GET_DEF_HDRQ_ID(pc) (((struct hwi_controller *)\
160 (GET_HWI_CONTROLLER_WS(pc)))->default_pdu_hdr.id)
161
162 #define PAGES_REQUIRED(x) \
163 ((x < PAGE_SIZE) ? 1 : ((x + PAGE_SIZE - 1) / PAGE_SIZE))
164
165 #define BEISCSI_MSI_NAME 20 /* size of msi_name string */
166
167 enum be_mem_enum {
168 HWI_MEM_ADDN_CONTEXT,
169 HWI_MEM_WRB,
170 HWI_MEM_WRBH,
171 HWI_MEM_SGLH,
172 HWI_MEM_SGE,
173 HWI_MEM_ASYNC_HEADER_BUF, /* 5 */
174 HWI_MEM_ASYNC_DATA_BUF,
175 HWI_MEM_ASYNC_HEADER_RING,
176 HWI_MEM_ASYNC_DATA_RING,
177 HWI_MEM_ASYNC_HEADER_HANDLE,
178 HWI_MEM_ASYNC_DATA_HANDLE, /* 10 */
179 HWI_MEM_ASYNC_PDU_CONTEXT,
180 ISCSI_MEM_GLOBAL_HEADER,
181 SE_MEM_MAX
182 };
183
184 struct be_bus_address32 {
185 unsigned int address_lo;
186 unsigned int address_hi;
187 };
188
189 struct be_bus_address64 {
190 unsigned long long address;
191 };
192
193 struct be_bus_address {
194 union {
195 struct be_bus_address32 a32;
196 struct be_bus_address64 a64;
197 } u;
198 };
199
200 struct mem_array {
201 struct be_bus_address bus_address; /* Bus address of location */
202 void *virtual_address; /* virtual address to the location */
203 unsigned int size; /* Size required by memory block */
204 };
205
206 struct be_mem_descriptor {
207 unsigned int index; /* Index of this memory parameter */
208 unsigned int category; /* type indicates cached/non-cached */
209 unsigned int num_elements; /* number of elements in this
210 * descriptor
211 */
212 unsigned int alignment_mask; /* Alignment mask for this block */
213 unsigned int size_in_bytes; /* Size required by memory block */
214 struct mem_array *mem_array;
215 };
216
217 struct sgl_handle {
218 unsigned int sgl_index;
219 unsigned int type;
220 unsigned int cid;
221 struct iscsi_task *task;
222 struct iscsi_sge *pfrag;
223 };
224
225 struct hba_parameters {
226 unsigned int ios_per_ctrl;
227 unsigned int cxns_per_ctrl;
228 unsigned int asyncpdus_per_ctrl;
229 unsigned int icds_per_ctrl;
230 unsigned int num_sge_per_io;
231 unsigned int defpdu_hdr_sz;
232 unsigned int defpdu_data_sz;
233 unsigned int num_cq_entries;
234 unsigned int num_eq_entries;
235 unsigned int wrbs_per_cxn;
236 unsigned int crashmode;
237 unsigned int hba_num;
238
239 unsigned int mgmt_ws_sz;
240 unsigned int hwi_ws_sz;
241
242 unsigned int eto;
243 unsigned int ldto;
244
245 unsigned int dbg_flags;
246 unsigned int num_cxn;
247
248 unsigned int eq_timer;
249 /**
250 * These are calculated from other params. They're here
251 * for debug purposes
252 */
253 unsigned int num_mcc_pages;
254 unsigned int num_mcc_cq_pages;
255 unsigned int num_cq_pages;
256 unsigned int num_eq_pages;
257
258 unsigned int num_async_pdu_buf_pages;
259 unsigned int num_async_pdu_buf_sgl_pages;
260 unsigned int num_async_pdu_buf_cq_pages;
261
262 unsigned int num_async_pdu_hdr_pages;
263 unsigned int num_async_pdu_hdr_sgl_pages;
264 unsigned int num_async_pdu_hdr_cq_pages;
265
266 unsigned int num_sge;
267 };
268
269 struct invalidate_command_table {
270 unsigned short icd;
271 unsigned short cid;
272 } __packed;
273
274 struct beiscsi_hba {
275 struct hba_parameters params;
276 struct hwi_controller *phwi_ctrlr;
277 unsigned int mem_req[SE_MEM_MAX];
278 /* PCI BAR mapped addresses */
279 u8 __iomem *csr_va; /* CSR */
280 u8 __iomem *db_va; /* Door Bell */
281 u8 __iomem *pci_va; /* PCI Config */
282 struct be_bus_address csr_pa; /* CSR */
283 struct be_bus_address db_pa; /* CSR */
284 struct be_bus_address pci_pa; /* CSR */
285 /* PCI representation of our HBA */
286 struct pci_dev *pcidev;
287 unsigned int state;
288 unsigned short asic_revision;
289 unsigned int num_cpus;
290 unsigned int nxt_cqid;
291 struct msix_entry msix_entries[MAX_CPUS + 1];
292 char *msi_name[MAX_CPUS + 1];
293 bool msix_enabled;
294 struct be_mem_descriptor *init_mem;
295
296 unsigned short io_sgl_alloc_index;
297 unsigned short io_sgl_free_index;
298 unsigned short io_sgl_hndl_avbl;
299 struct sgl_handle **io_sgl_hndl_base;
300 struct sgl_handle **sgl_hndl_array;
301
302 unsigned short eh_sgl_alloc_index;
303 unsigned short eh_sgl_free_index;
304 unsigned short eh_sgl_hndl_avbl;
305 struct sgl_handle **eh_sgl_hndl_base;
306 spinlock_t io_sgl_lock;
307 spinlock_t mgmt_sgl_lock;
308 spinlock_t isr_lock;
309 unsigned int age;
310 unsigned short avlbl_cids;
311 unsigned short cid_alloc;
312 unsigned short cid_free;
313 struct beiscsi_conn *conn_table[BE2_MAX_SESSIONS * 2];
314 struct list_head hba_queue;
315 unsigned short *cid_array;
316 struct iscsi_endpoint **ep_array;
317 struct iscsi_boot_kset *boot_kset;
318 struct Scsi_Host *shost;
319 struct {
320 /**
321 * group together since they are used most frequently
322 * for cid to cri conversion
323 */
324 unsigned int iscsi_cid_start;
325 unsigned int phys_port;
326
327 unsigned int isr_offset;
328 unsigned int iscsi_icd_start;
329 unsigned int iscsi_cid_count;
330 unsigned int iscsi_icd_count;
331 unsigned int pci_function;
332
333 unsigned short cid_alloc;
334 unsigned short cid_free;
335 unsigned short avlbl_cids;
336 unsigned short iscsi_features;
337 spinlock_t cid_lock;
338 } fw_config;
339
340 u8 mac_address[ETH_ALEN];
341 unsigned short todo_cq;
342 unsigned short todo_mcc_cq;
343 char wq_name[20];
344 struct workqueue_struct *wq; /* The actuak work queue */
345 struct work_struct work_cqs; /* The work being queued */
346 struct be_ctrl_info ctrl;
347 unsigned int generation;
348 unsigned int read_mac_address;
349 struct mgmt_session_info boot_sess;
350 struct invalidate_command_table inv_tbl[128];
351
352 };
353
354 struct beiscsi_session {
355 struct pci_pool *bhs_pool;
356 };
357
358 /**
359 * struct beiscsi_conn - iscsi connection structure
360 */
361 struct beiscsi_conn {
362 struct iscsi_conn *conn;
363 struct beiscsi_hba *phba;
364 u32 exp_statsn;
365 u32 beiscsi_conn_cid;
366 struct beiscsi_endpoint *ep;
367 unsigned short login_in_progress;
368 struct wrb_handle *plogin_wrb_handle;
369 struct sgl_handle *plogin_sgl_handle;
370 struct beiscsi_session *beiscsi_sess;
371 struct iscsi_task *task;
372 };
373
374 /* This structure is used by the chip */
375 struct pdu_data_out {
376 u32 dw[12];
377 };
378 /**
379 * Pseudo amap definition in which each bit of the actual structure is defined
380 * as a byte: used to calculate offset/shift/mask of each field
381 */
382 struct amap_pdu_data_out {
383 u8 opcode[6]; /* opcode */
384 u8 rsvd0[2]; /* should be 0 */
385 u8 rsvd1[7];
386 u8 final_bit; /* F bit */
387 u8 rsvd2[16];
388 u8 ahs_length[8]; /* no AHS */
389 u8 data_len_hi[8];
390 u8 data_len_lo[16]; /* DataSegmentLength */
391 u8 lun[64];
392 u8 itt[32]; /* ITT; initiator task tag */
393 u8 ttt[32]; /* TTT; valid for R2T or 0xffffffff */
394 u8 rsvd3[32];
395 u8 exp_stat_sn[32];
396 u8 rsvd4[32];
397 u8 data_sn[32];
398 u8 buffer_offset[32];
399 u8 rsvd5[32];
400 };
401
402 struct be_cmd_bhs {
403 struct iscsi_scsi_req iscsi_hdr;
404 unsigned char pad1[16];
405 struct pdu_data_out iscsi_data_pdu;
406 unsigned char pad2[BE_SENSE_INFO_SIZE -
407 sizeof(struct pdu_data_out)];
408 };
409
410 struct beiscsi_io_task {
411 struct wrb_handle *pwrb_handle;
412 struct sgl_handle *psgl_handle;
413 struct beiscsi_conn *conn;
414 struct scsi_cmnd *scsi_cmnd;
415 unsigned int cmd_sn;
416 unsigned int flags;
417 unsigned short cid;
418 unsigned short header_len;
419 itt_t libiscsi_itt;
420 struct be_cmd_bhs *cmd_bhs;
421 struct be_bus_address bhs_pa;
422 unsigned short bhs_len;
423 };
424
425 struct be_nonio_bhs {
426 struct iscsi_hdr iscsi_hdr;
427 unsigned char pad1[16];
428 struct pdu_data_out iscsi_data_pdu;
429 unsigned char pad2[BE_SENSE_INFO_SIZE -
430 sizeof(struct pdu_data_out)];
431 };
432
433 struct be_status_bhs {
434 struct iscsi_scsi_req iscsi_hdr;
435 unsigned char pad1[16];
436 /**
437 * The plus 2 below is to hold the sense info length that gets
438 * DMA'ed by RxULP
439 */
440 unsigned char sense_info[BE_SENSE_INFO_SIZE];
441 };
442
443 struct iscsi_sge {
444 u32 dw[4];
445 };
446
447 /**
448 * Pseudo amap definition in which each bit of the actual structure is defined
449 * as a byte: used to calculate offset/shift/mask of each field
450 */
451 struct amap_iscsi_sge {
452 u8 addr_hi[32];
453 u8 addr_lo[32];
454 u8 sge_offset[22]; /* DWORD 2 */
455 u8 rsvd0[9]; /* DWORD 2 */
456 u8 last_sge; /* DWORD 2 */
457 u8 len[17]; /* DWORD 3 */
458 u8 rsvd1[15]; /* DWORD 3 */
459 };
460
461 struct beiscsi_offload_params {
462 u32 dw[5];
463 };
464
465 #define OFFLD_PARAMS_ERL 0x00000003
466 #define OFFLD_PARAMS_DDE 0x00000004
467 #define OFFLD_PARAMS_HDE 0x00000008
468 #define OFFLD_PARAMS_IR2T 0x00000010
469 #define OFFLD_PARAMS_IMD 0x00000020
470
471 /**
472 * Pseudo amap definition in which each bit of the actual structure is defined
473 * as a byte: used to calculate offset/shift/mask of each field
474 */
475 struct amap_beiscsi_offload_params {
476 u8 max_burst_length[32];
477 u8 max_send_data_segment_length[32];
478 u8 first_burst_length[32];
479 u8 erl[2];
480 u8 dde[1];
481 u8 hde[1];
482 u8 ir2t[1];
483 u8 imd[1];
484 u8 pad[26];
485 u8 exp_statsn[32];
486 };
487
488 /* void hwi_complete_drvr_msgs(struct beiscsi_conn *beiscsi_conn,
489 struct beiscsi_hba *phba, struct sol_cqe *psol);*/
490
491 struct async_pdu_handle {
492 struct list_head link;
493 struct be_bus_address pa;
494 void *pbuffer;
495 unsigned int consumed;
496 unsigned char index;
497 unsigned char is_header;
498 unsigned short cri;
499 unsigned long buffer_len;
500 };
501
502 struct hwi_async_entry {
503 struct {
504 unsigned char hdr_received;
505 unsigned char hdr_len;
506 unsigned short bytes_received;
507 unsigned int bytes_needed;
508 struct list_head list;
509 } wait_queue;
510
511 struct list_head header_busy_list;
512 struct list_head data_busy_list;
513 };
514
515 struct hwi_async_pdu_context {
516 struct {
517 struct be_bus_address pa_base;
518 void *va_base;
519 void *ring_base;
520 struct async_pdu_handle *handle_base;
521
522 unsigned int host_write_ptr;
523 unsigned int ep_read_ptr;
524 unsigned int writables;
525
526 unsigned int free_entries;
527 unsigned int busy_entries;
528 unsigned int buffer_size;
529 unsigned int num_entries;
530
531 struct list_head free_list;
532 } async_header;
533
534 struct {
535 struct be_bus_address pa_base;
536 void *va_base;
537 void *ring_base;
538 struct async_pdu_handle *handle_base;
539
540 unsigned int host_write_ptr;
541 unsigned int ep_read_ptr;
542 unsigned int writables;
543
544 unsigned int free_entries;
545 unsigned int busy_entries;
546 unsigned int buffer_size;
547 struct list_head free_list;
548 unsigned int num_entries;
549 } async_data;
550
551 /**
552 * This is a varying size list! Do not add anything
553 * after this entry!!
554 */
555 struct hwi_async_entry async_entry[BE2_MAX_SESSIONS * 2];
556 };
557
558 #define PDUCQE_CODE_MASK 0x0000003F
559 #define PDUCQE_DPL_MASK 0xFFFF0000
560 #define PDUCQE_INDEX_MASK 0x0000FFFF
561
562 struct i_t_dpdu_cqe {
563 u32 dw[4];
564 } __packed;
565
566 /**
567 * Pseudo amap definition in which each bit of the actual structure is defined
568 * as a byte: used to calculate offset/shift/mask of each field
569 */
570 struct amap_i_t_dpdu_cqe {
571 u8 db_addr_hi[32];
572 u8 db_addr_lo[32];
573 u8 code[6];
574 u8 cid[10];
575 u8 dpl[16];
576 u8 index[16];
577 u8 num_cons[10];
578 u8 rsvd0[4];
579 u8 final;
580 u8 valid;
581 } __packed;
582
583 #define CQE_VALID_MASK 0x80000000
584 #define CQE_CODE_MASK 0x0000003F
585 #define CQE_CID_MASK 0x0000FFC0
586
587 #define EQE_VALID_MASK 0x00000001
588 #define EQE_MAJORCODE_MASK 0x0000000E
589 #define EQE_RESID_MASK 0xFFFF0000
590
591 struct be_eq_entry {
592 u32 dw[1];
593 } __packed;
594
595 /**
596 * Pseudo amap definition in which each bit of the actual structure is defined
597 * as a byte: used to calculate offset/shift/mask of each field
598 */
599 struct amap_eq_entry {
600 u8 valid; /* DWORD 0 */
601 u8 major_code[3]; /* DWORD 0 */
602 u8 minor_code[12]; /* DWORD 0 */
603 u8 resource_id[16]; /* DWORD 0 */
604
605 } __packed;
606
607 struct cq_db {
608 u32 dw[1];
609 } __packed;
610
611 /**
612 * Pseudo amap definition in which each bit of the actual structure is defined
613 * as a byte: used to calculate offset/shift/mask of each field
614 */
615 struct amap_cq_db {
616 u8 qid[10];
617 u8 event[1];
618 u8 rsvd0[5];
619 u8 num_popped[13];
620 u8 rearm[1];
621 u8 rsvd1[2];
622 } __packed;
623
624 void beiscsi_process_eq(struct beiscsi_hba *phba);
625
626 struct iscsi_wrb {
627 u32 dw[16];
628 } __packed;
629
630 #define WRB_TYPE_MASK 0xF0000000
631
632 /**
633 * Pseudo amap definition in which each bit of the actual structure is defined
634 * as a byte: used to calculate offset/shift/mask of each field
635 */
636 struct amap_iscsi_wrb {
637 u8 lun[14]; /* DWORD 0 */
638 u8 lt; /* DWORD 0 */
639 u8 invld; /* DWORD 0 */
640 u8 wrb_idx[8]; /* DWORD 0 */
641 u8 dsp; /* DWORD 0 */
642 u8 dmsg; /* DWORD 0 */
643 u8 undr_run; /* DWORD 0 */
644 u8 over_run; /* DWORD 0 */
645 u8 type[4]; /* DWORD 0 */
646 u8 ptr2nextwrb[8]; /* DWORD 1 */
647 u8 r2t_exp_dtl[24]; /* DWORD 1 */
648 u8 sgl_icd_idx[12]; /* DWORD 2 */
649 u8 rsvd0[20]; /* DWORD 2 */
650 u8 exp_data_sn[32]; /* DWORD 3 */
651 u8 iscsi_bhs_addr_hi[32]; /* DWORD 4 */
652 u8 iscsi_bhs_addr_lo[32]; /* DWORD 5 */
653 u8 cmdsn_itt[32]; /* DWORD 6 */
654 u8 dif_ref_tag[32]; /* DWORD 7 */
655 u8 sge0_addr_hi[32]; /* DWORD 8 */
656 u8 sge0_addr_lo[32]; /* DWORD 9 */
657 u8 sge0_offset[22]; /* DWORD 10 */
658 u8 pbs; /* DWORD 10 */
659 u8 dif_mode[2]; /* DWORD 10 */
660 u8 rsvd1[6]; /* DWORD 10 */
661 u8 sge0_last; /* DWORD 10 */
662 u8 sge0_len[17]; /* DWORD 11 */
663 u8 dif_meta_tag[14]; /* DWORD 11 */
664 u8 sge0_in_ddr; /* DWORD 11 */
665 u8 sge1_addr_hi[32]; /* DWORD 12 */
666 u8 sge1_addr_lo[32]; /* DWORD 13 */
667 u8 sge1_r2t_offset[22]; /* DWORD 14 */
668 u8 rsvd2[9]; /* DWORD 14 */
669 u8 sge1_last; /* DWORD 14 */
670 u8 sge1_len[17]; /* DWORD 15 */
671 u8 ref_sgl_icd_idx[12]; /* DWORD 15 */
672 u8 rsvd3[2]; /* DWORD 15 */
673 u8 sge1_in_ddr; /* DWORD 15 */
674
675 } __packed;
676
677 struct wrb_handle *alloc_wrb_handle(struct beiscsi_hba *phba, unsigned int cid);
678 void
679 free_mgmt_sgl_handle(struct beiscsi_hba *phba, struct sgl_handle *psgl_handle);
680
681 void beiscsi_process_all_cqs(struct work_struct *work);
682
683 struct pdu_nop_out {
684 u32 dw[12];
685 };
686
687 /**
688 * Pseudo amap definition in which each bit of the actual structure is defined
689 * as a byte: used to calculate offset/shift/mask of each field
690 */
691 struct amap_pdu_nop_out {
692 u8 opcode[6]; /* opcode 0x00 */
693 u8 i_bit; /* I Bit */
694 u8 x_bit; /* reserved; should be 0 */
695 u8 fp_bit_filler1[7];
696 u8 f_bit; /* always 1 */
697 u8 reserved1[16];
698 u8 ahs_length[8]; /* no AHS */
699 u8 data_len_hi[8];
700 u8 data_len_lo[16]; /* DataSegmentLength */
701 u8 lun[64];
702 u8 itt[32]; /* initiator id for ping or 0xffffffff */
703 u8 ttt[32]; /* target id for ping or 0xffffffff */
704 u8 cmd_sn[32];
705 u8 exp_stat_sn[32];
706 u8 reserved5[128];
707 };
708
709 #define PDUBASE_OPCODE_MASK 0x0000003F
710 #define PDUBASE_DATALENHI_MASK 0x0000FF00
711 #define PDUBASE_DATALENLO_MASK 0xFFFF0000
712
713 struct pdu_base {
714 u32 dw[16];
715 } __packed;
716
717 /**
718 * Pseudo amap definition in which each bit of the actual structure is defined
719 * as a byte: used to calculate offset/shift/mask of each field
720 */
721 struct amap_pdu_base {
722 u8 opcode[6];
723 u8 i_bit; /* immediate bit */
724 u8 x_bit; /* reserved, always 0 */
725 u8 reserved1[24]; /* opcode-specific fields */
726 u8 ahs_length[8]; /* length units is 4 byte words */
727 u8 data_len_hi[8];
728 u8 data_len_lo[16]; /* DatasegmentLength */
729 u8 lun[64]; /* lun or opcode-specific fields */
730 u8 itt[32]; /* initiator task tag */
731 u8 reserved4[224];
732 };
733
734 struct iscsi_target_context_update_wrb {
735 u32 dw[16];
736 } __packed;
737
738 /**
739 * Pseudo amap definition in which each bit of the actual structure is defined
740 * as a byte: used to calculate offset/shift/mask of each field
741 */
742 struct amap_iscsi_target_context_update_wrb {
743 u8 lun[14]; /* DWORD 0 */
744 u8 lt; /* DWORD 0 */
745 u8 invld; /* DWORD 0 */
746 u8 wrb_idx[8]; /* DWORD 0 */
747 u8 dsp; /* DWORD 0 */
748 u8 dmsg; /* DWORD 0 */
749 u8 undr_run; /* DWORD 0 */
750 u8 over_run; /* DWORD 0 */
751 u8 type[4]; /* DWORD 0 */
752 u8 ptr2nextwrb[8]; /* DWORD 1 */
753 u8 max_burst_length[19]; /* DWORD 1 */
754 u8 rsvd0[5]; /* DWORD 1 */
755 u8 rsvd1[15]; /* DWORD 2 */
756 u8 max_send_data_segment_length[17]; /* DWORD 2 */
757 u8 first_burst_length[14]; /* DWORD 3 */
758 u8 rsvd2[2]; /* DWORD 3 */
759 u8 tx_wrbindex_drv_msg[8]; /* DWORD 3 */
760 u8 rsvd3[5]; /* DWORD 3 */
761 u8 session_state[3]; /* DWORD 3 */
762 u8 rsvd4[16]; /* DWORD 4 */
763 u8 tx_jumbo; /* DWORD 4 */
764 u8 hde; /* DWORD 4 */
765 u8 dde; /* DWORD 4 */
766 u8 erl[2]; /* DWORD 4 */
767 u8 domain_id[5]; /* DWORD 4 */
768 u8 mode; /* DWORD 4 */
769 u8 imd; /* DWORD 4 */
770 u8 ir2t; /* DWORD 4 */
771 u8 notpredblq[2]; /* DWORD 4 */
772 u8 compltonack; /* DWORD 4 */
773 u8 stat_sn[32]; /* DWORD 5 */
774 u8 pad_buffer_addr_hi[32]; /* DWORD 6 */
775 u8 pad_buffer_addr_lo[32]; /* DWORD 7 */
776 u8 pad_addr_hi[32]; /* DWORD 8 */
777 u8 pad_addr_lo[32]; /* DWORD 9 */
778 u8 rsvd5[32]; /* DWORD 10 */
779 u8 rsvd6[32]; /* DWORD 11 */
780 u8 rsvd7[32]; /* DWORD 12 */
781 u8 rsvd8[32]; /* DWORD 13 */
782 u8 rsvd9[32]; /* DWORD 14 */
783 u8 rsvd10[32]; /* DWORD 15 */
784
785 } __packed;
786
787 struct be_ring {
788 u32 pages; /* queue size in pages */
789 u32 id; /* queue id assigned by beklib */
790 u32 num; /* number of elements in queue */
791 u32 cidx; /* consumer index */
792 u32 pidx; /* producer index -- not used by most rings */
793 u32 item_size; /* size in bytes of one object */
794
795 void *va; /* The virtual address of the ring. This
796 * should be last to allow 32 & 64 bit debugger
797 * extensions to work.
798 */
799 };
800
801 struct hwi_wrb_context {
802 struct list_head wrb_handle_list;
803 struct list_head wrb_handle_drvr_list;
804 struct wrb_handle **pwrb_handle_base;
805 struct wrb_handle **pwrb_handle_basestd;
806 struct iscsi_wrb *plast_wrb;
807 unsigned short alloc_index;
808 unsigned short free_index;
809 unsigned short wrb_handles_available;
810 unsigned short cid;
811 };
812
813 struct hwi_controller {
814 struct list_head io_sgl_list;
815 struct list_head eh_sgl_list;
816 struct sgl_handle *psgl_handle_base;
817 unsigned int wrb_mem_index;
818
819 struct hwi_wrb_context wrb_context[BE2_MAX_SESSIONS * 2];
820 struct mcc_wrb *pmcc_wrb_base;
821 struct be_ring default_pdu_hdr;
822 struct be_ring default_pdu_data;
823 struct hwi_context_memory *phwi_ctxt;
824 };
825
826 enum hwh_type_enum {
827 HWH_TYPE_IO = 1,
828 HWH_TYPE_LOGOUT = 2,
829 HWH_TYPE_TMF = 3,
830 HWH_TYPE_NOP = 4,
831 HWH_TYPE_IO_RD = 5,
832 HWH_TYPE_LOGIN = 11,
833 HWH_TYPE_INVALID = 0xFFFFFFFF
834 };
835
836 struct wrb_handle {
837 enum hwh_type_enum type;
838 unsigned short wrb_index;
839 unsigned short nxt_wrb_index;
840
841 struct iscsi_task *pio_handle;
842 struct iscsi_wrb *pwrb;
843 };
844
845 struct hwi_context_memory {
846 /* Adaptive interrupt coalescing (AIC) info */
847 u16 min_eqd; /* in usecs */
848 u16 max_eqd; /* in usecs */
849 u16 cur_eqd; /* in usecs */
850 struct be_eq_obj be_eq[MAX_CPUS];
851 struct be_queue_info be_cq[MAX_CPUS];
852
853 struct be_queue_info be_def_hdrq;
854 struct be_queue_info be_def_dataq;
855
856 struct be_queue_info be_wrbq[BE2_MAX_SESSIONS];
857 struct be_mcc_wrb_context *pbe_mcc_context;
858
859 struct hwi_async_pdu_context *pasync_ctx;
860 };
861
862 #endif