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bnx2x, cnic, bnx2i: use new FW/HSI
[net-next-2.6.git] / drivers / scsi / bnx2i / bnx2i.h
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cf4e6363
MC		 1/* bnx2i.h: Broadcom NetXtreme II iSCSI driver.
2 *
3 * Copyright (c) 2006 - 2009 Broadcom Corporation
4 * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved.
5 * Copyright (c) 2007, 2008 Mike Christie
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation.
10 *
11 * Written by: Anil Veerabhadrappa (anilgv@broadcom.com)
12 */
13
14#ifndef _BNX2I_H_
15#define _BNX2I_H_
16
17#include <linux/module.h>
18#include <linux/moduleparam.h>
19
20#include <linux/errno.h>
21#include <linux/pci.h>
22#include <linux/spinlock.h>
23#include <linux/interrupt.h>
24#include <linux/sched.h>
25#include <linux/in.h>
26#include <linux/kfifo.h>
27#include <linux/netdevice.h>
28#include <linux/completion.h>
29
30#include <scsi/scsi_cmnd.h>
31#include <scsi/scsi_device.h>
32#include <scsi/scsi_eh.h>
33#include <scsi/scsi_host.h>
34#include <scsi/scsi.h>
35#include <scsi/iscsi_proto.h>
36#include <scsi/libiscsi.h>
37#include <scsi/scsi_transport_iscsi.h>
38
39#include "../../net/cnic_if.h"
40#include "57xx_iscsi_hsi.h"
41#include "57xx_iscsi_constants.h"
42
43#define BNX2_ISCSI_DRIVER_NAME "bnx2i"
44
45#define BNX2I_MAX_ADAPTERS 8
46
47#define ISCSI_MAX_CONNS_PER_HBA 128
48#define ISCSI_MAX_SESS_PER_HBA ISCSI_MAX_CONNS_PER_HBA
49#define ISCSI_MAX_CMDS_PER_SESS 128
50
51/* Total active commands across all connections supported by devices */
52#define ISCSI_MAX_CMDS_PER_HBA_5708 (28 * (ISCSI_MAX_CMDS_PER_SESS - 1))
53#define ISCSI_MAX_CMDS_PER_HBA_5709 (128 * (ISCSI_MAX_CMDS_PER_SESS - 1))
54#define ISCSI_MAX_CMDS_PER_HBA_57710 (256 * (ISCSI_MAX_CMDS_PER_SESS - 1))
55
56#define ISCSI_MAX_BDS_PER_CMD 32
57
58#define MAX_PAGES_PER_CTRL_STRUCT_POOL 8
59#define BNX2I_RESERVED_SLOW_PATH_CMD_SLOTS 4
60
523224a3
DK		 61#define BNX2I_5771X_DBELL_PAGE_SIZE 128
62
cf4e6363
MC		 63/* 5706/08 hardware has limit on maximum buffer size per BD it can handle */
64#define MAX_BD_LENGTH 65535
65#define BD_SPLIT_SIZE 32768
66
67/* min, max & default values for SQ/RQ/CQ size, configurable via' modparam */
68#define BNX2I_SQ_WQES_MIN 16
69#define BNX2I_570X_SQ_WQES_MAX 128
70#define BNX2I_5770X_SQ_WQES_MAX 512
71#define BNX2I_570X_SQ_WQES_DEFAULT 128
72#define BNX2I_5770X_SQ_WQES_DEFAULT 256
73
74#define BNX2I_570X_CQ_WQES_MAX 128
75#define BNX2I_5770X_CQ_WQES_MAX 512
76
77#define BNX2I_RQ_WQES_MIN 16
78#define BNX2I_RQ_WQES_MAX 32
79#define BNX2I_RQ_WQES_DEFAULT 16
80
81/* CCELLs per conn */
82#define BNX2I_CCELLS_MIN 16
83#define BNX2I_CCELLS_MAX 96
84#define BNX2I_CCELLS_DEFAULT 64
85
86#define ITT_INVALID_SIGNATURE 0xFFFF
87
88#define ISCSI_CMD_CLEANUP_TIMEOUT 100
89
90#define BNX2I_CONN_CTX_BUF_SIZE 16384
91
92#define BNX2I_SQ_WQE_SIZE 64
93#define BNX2I_RQ_WQE_SIZE 256
94#define BNX2I_CQE_SIZE 64
95
96#define MB_KERNEL_CTX_SHIFT 8
97#define MB_KERNEL_CTX_SIZE (1 << MB_KERNEL_CTX_SHIFT)
98
99#define CTX_SHIFT 7
100#define GET_CID_NUM(cid_addr) ((cid_addr) >> CTX_SHIFT)
101
102#define CTX_OFFSET 0x10000
103#define MAX_CID_CNT 0x4000
104
53203244
AV		 105#define BNX2I_570X_PAGE_SIZE_DEFAULT 4096
106
cf4e6363
MC		 107/* 5709 context registers */
108#define BNX2_MQ_CONFIG2 0x00003d00
109#define BNX2_MQ_CONFIG2_CONT_SZ (0x7L<<4)
110#define BNX2_MQ_CONFIG2_FIRST_L4L5 (0x1fL<<8)
111
112/* 57710's BAR2 is mapped to doorbell registers */
113#define BNX2X_DOORBELL_PCI_BAR 2
114#define BNX2X_MAX_CQS 8
115
116#define CNIC_ARM_CQE 1
117#define CNIC_DISARM_CQE 0
118
119#define REG_RD(__hba, offset) \
120 readl(__hba->regview + offset)
121#define REG_WR(__hba, offset, val) \
122 writel(val, __hba->regview + offset)
123
124
125/**
126 * struct generic_pdu_resc - login pdu resource structure
127 *
128 * @req_buf: driver buffer used to stage payload associated with
129 * the login request
130 * @req_dma_addr: dma address for iscsi login request payload buffer
131 * @req_buf_size: actual login request payload length
132 * @req_wr_ptr: pointer into login request buffer when next data is
133 * to be written
134 * @resp_hdr: iscsi header where iscsi login response header is to
135 * be recreated
136 * @resp_buf: buffer to stage login response payload
137 * @resp_dma_addr: login response payload buffer dma address
138 * @resp_buf_size: login response paylod length
139 * @resp_wr_ptr: pointer into login response buffer when next data is
140 * to be written
141 * @req_bd_tbl: iscsi login request payload BD table
142 * @req_bd_dma: login request BD table dma address
143 * @resp_bd_tbl: iscsi login response payload BD table
144 * @resp_bd_dma: login request BD table dma address
145 *
146 * following structure defines buffer info for generic pdus such as iSCSI Login,
147 * Logout and NOP
148 */
149struct generic_pdu_resc {
150 char *req_buf;
151 dma_addr_t req_dma_addr;
152 u32 req_buf_size;
153 char *req_wr_ptr;
154 struct iscsi_hdr resp_hdr;
155 char *resp_buf;
156 dma_addr_t resp_dma_addr;
157 u32 resp_buf_size;
158 char *resp_wr_ptr;
159 char *req_bd_tbl;
160 dma_addr_t req_bd_dma;
161 char *resp_bd_tbl;
162 dma_addr_t resp_bd_dma;
163};
164
165
166/**
167 * struct bd_resc_page - tracks DMA'able memory allocated for BD tables
168 *
169 * @link: list head to link elements
170 * @max_ptrs: maximun pointers that can be stored in this page
171 * @num_valid: number of pointer valid in this page
172 * @page: base addess for page pointer array
173 *
174 * structure to track DMA'able memory allocated for command BD tables
175 */
176struct bd_resc_page {
177 struct list_head link;
178 u32 max_ptrs;
179 u32 num_valid;
180 void *page[1];
181};
182
183
184/**
185 * struct io_bdt - I/O buffer destricptor table
186 *
187 * @bd_tbl: BD table's virtual address
188 * @bd_tbl_dma: BD table's dma address
189 * @bd_valid: num valid BD entries
190 *
191 * IO BD table
192 */
193struct io_bdt {
194 struct iscsi_bd *bd_tbl;
195 dma_addr_t bd_tbl_dma;
196 u16 bd_valid;
197};
198
199
200/**
201 * bnx2i_cmd - iscsi command structure
202 *
203 * @scsi_cmd: SCSI-ML task pointer corresponding to this iscsi cmd
204 * @sg: SG list
205 * @io_tbl: buffer descriptor (BD) table
206 * @bd_tbl_dma: buffer descriptor (BD) table's dma address
207 */
208struct bnx2i_cmd {
209 struct iscsi_hdr hdr;
210 struct bnx2i_conn *conn;
211 struct scsi_cmnd *scsi_cmd;
212 struct scatterlist *sg;
213 struct io_bdt io_tbl;
214 dma_addr_t bd_tbl_dma;
215 struct bnx2i_cmd_request req;
216};
217
218
219/**
220 * struct bnx2i_conn - iscsi connection structure
221 *
222 * @cls_conn: pointer to iscsi cls conn
223 * @hba: adapter structure pointer
224 * @iscsi_conn_cid: iscsi conn id
225 * @fw_cid: firmware iscsi context id
226 * @ep: endpoint structure pointer
227 * @gen_pdu: login/nopout/logout pdu resources
228 * @violation_notified: bit mask used to track iscsi error/warning messages
229 * already printed out
230 *
231 * iSCSI connection structure
232 */
233struct bnx2i_conn {
234 struct iscsi_cls_conn *cls_conn;
235 struct bnx2i_hba *hba;
236 struct completion cmd_cleanup_cmpl;
cf4e6363
MC		 237
238 u32 iscsi_conn_cid;
239#define BNX2I_CID_RESERVED 0x5AFF
240 u32 fw_cid;
241
242 struct timer_list poll_timer;
243 /*
244 * Queue Pair (QP) related structure elements.
245 */
246 struct bnx2i_endpoint *ep;
247
248 /*
249 * Buffer for login negotiation process
250 */
251 struct generic_pdu_resc gen_pdu;
252 u64 violation_notified;
253};
254
255
256
257/**
258 * struct iscsi_cid_queue - Per adapter iscsi cid queue
259 *
260 * @cid_que_base: queue base memory
261 * @cid_que: queue memory pointer
262 * @cid_q_prod_idx: produce index
263 * @cid_q_cons_idx: consumer index
264 * @cid_q_max_idx: max index. used to detect wrap around condition
265 * @cid_free_cnt: queue size
266 * @conn_cid_tbl: iscsi cid to conn structure mapping table
267 *
268 * Per adapter iSCSI CID Queue
269 */
270struct iscsi_cid_queue {
271 void *cid_que_base;
272 u32 *cid_que;
273 u32 cid_q_prod_idx;
274 u32 cid_q_cons_idx;
275 u32 cid_q_max_idx;
276 u32 cid_free_cnt;
277 struct bnx2i_conn **conn_cid_tbl;
278};
279
280/**
281 * struct bnx2i_hba - bnx2i adapter structure
282 *
283 * @link: list head to link elements
284 * @cnic: pointer to cnic device
285 * @pcidev: pointer to pci dev
286 * @netdev: pointer to netdev structure
287 * @regview: mapped PCI register space
288 * @age: age, incremented by every recovery
289 * @cnic_dev_type: cnic device type, 5706/5708/5709/57710
290 * @mail_queue_access: mailbox queue access mode, applicable to 5709 only
291 * @reg_with_cnic: indicates whether the device is register with CNIC
292 * @adapter_state: adapter state, UP, GOING_DOWN, LINK_DOWN
293 * @mtu_supported: Ethernet MTU supported
294 * @shost: scsi host pointer
295 * @max_sqes: SQ size
296 * @max_rqes: RQ size
297 * @max_cqes: CQ size
298 * @num_ccell: number of command cells per connection
299 * @ofld_conns_active: active connection list
55e15c97 300 * @eh_wait: wait queue for the endpoint to shutdown
cf4e6363
MC		 301 * @max_active_conns: max offload connections supported by this device
302 * @cid_que: iscsi cid queue
303 * @ep_rdwr_lock: read / write lock to synchronize various ep lists
304 * @ep_ofld_list: connection list for pending offload completion
46012e8b 305 * @ep_active_list: connection list for active offload endpoints
cf4e6363
MC		 306 * @ep_destroy_list: connection list for pending offload completion
307 * @mp_bd_tbl: BD table to be used with middle path requests
308 * @mp_bd_dma: DMA address of 'mp_bd_tbl' memory buffer
309 * @dummy_buffer: Dummy buffer to be used with zero length scsicmd reqs
310 * @dummy_buf_dma: DMA address of 'dummy_buffer' memory buffer
311 * @lock: lock to synchonize access to hba structure
55e15c97 312 * @hba_shutdown_tmo: Timeout value to shutdown each connection
e37d2c47
EW		 313 * @conn_teardown_tmo: Timeout value to tear down each connection
314 * @conn_ctx_destroy_tmo: Timeout value to destroy context of each connection
cf4e6363
MC		 315 * @pci_did: PCI device ID
316 * @pci_vid: PCI vendor ID
317 * @pci_sdid: PCI subsystem device ID
318 * @pci_svid: PCI subsystem vendor ID
319 * @pci_func: PCI function number in system pci tree
320 * @pci_devno: PCI device number in system pci tree
321 * @num_wqe_sent: statistic counter, total wqe's sent
322 * @num_cqe_rcvd: statistic counter, total cqe's received
323 * @num_intr_claimed: statistic counter, total interrupts claimed
324 * @link_changed_count: statistic counter, num of link change notifications
325 * received
326 * @ipaddr_changed_count: statistic counter, num times IP address changed while
327 * at least one connection is offloaded
328 * @num_sess_opened: statistic counter, total num sessions opened
329 * @num_conn_opened: statistic counter, total num conns opened on this hba
330 * @ctx_ccell_tasks: captures number of ccells and tasks supported by
331 * currently offloaded connection, used to decode
332 * context memory
333 *
334 * Adapter Data Structure
335 */
336struct bnx2i_hba {
337 struct list_head link;
338 struct cnic_dev *cnic;
339 struct pci_dev *pcidev;
340 struct net_device *netdev;
341 void __iomem *regview;
342
343 u32 age;
344 unsigned long cnic_dev_type;
345 #define BNX2I_NX2_DEV_5706 0x0
346 #define BNX2I_NX2_DEV_5708 0x1
347 #define BNX2I_NX2_DEV_5709 0x2
348 #define BNX2I_NX2_DEV_57710 0x3
349 u32 mail_queue_access;
350 #define BNX2I_MQ_KERNEL_MODE 0x0
351 #define BNX2I_MQ_KERNEL_BYPASS_MODE 0x1
352 #define BNX2I_MQ_BIN_MODE 0x2
353 unsigned long reg_with_cnic;
354 #define BNX2I_CNIC_REGISTERED 1
355
356 unsigned long adapter_state;
357 #define ADAPTER_STATE_UP 0
358 #define ADAPTER_STATE_GOING_DOWN 1
359 #define ADAPTER_STATE_LINK_DOWN 2
360 #define ADAPTER_STATE_INIT_FAILED 31
361 unsigned int mtu_supported;
362 #define BNX2I_MAX_MTU_SUPPORTED 1500
363
364 struct Scsi_Host *shost;
365
366 u32 max_sqes;
367 u32 max_rqes;
368 u32 max_cqes;
369 u32 num_ccell;
370
371 int ofld_conns_active;
490475a9 372 wait_queue_head_t eh_wait;
cf4e6363
MC		 373
374 int max_active_conns;
375 struct iscsi_cid_queue cid_que;
376
377 rwlock_t ep_rdwr_lock;
378 struct list_head ep_ofld_list;
46012e8b 379 struct list_head ep_active_list;
cf4e6363
MC		 380 struct list_head ep_destroy_list;
381
382 /*
383 * BD table to be used with MP (Middle Path requests.
384 */
385 char *mp_bd_tbl;
386 dma_addr_t mp_bd_dma;
387 char *dummy_buffer;
388 dma_addr_t dummy_buf_dma;
389
390 spinlock_t lock; /* protects hba structure access */
391 struct mutex net_dev_lock;/* sync net device access */
392
490475a9 393 int hba_shutdown_tmo;
e37d2c47
EW		 394 int conn_teardown_tmo;
395 int conn_ctx_destroy_tmo;
cf4e6363
MC		 396 /*
397 * PCI related info.
398 */
399 u16 pci_did;
400 u16 pci_vid;
401 u16 pci_sdid;
402 u16 pci_svid;
403 u16 pci_func;
404 u16 pci_devno;
405
406 /*
407 * Following are a bunch of statistics useful during development
408 * and later stage for score boarding.
409 */
410 u32 num_wqe_sent;
411 u32 num_cqe_rcvd;
412 u32 num_intr_claimed;
413 u32 link_changed_count;
414 u32 ipaddr_changed_count;
415 u32 num_sess_opened;
416 u32 num_conn_opened;
417 unsigned int ctx_ccell_tasks;
418};
419
420
421/*******************************************************************************
422 * QP [ SQ / RQ / CQ ] info.
423 ******************************************************************************/
424
425/*
426 * SQ/RQ/CQ generic structure definition
427 */
428struct sqe {
429 u8 sqe_byte[BNX2I_SQ_WQE_SIZE];
430};
431
432struct rqe {
433 u8 rqe_byte[BNX2I_RQ_WQE_SIZE];
434};
435
436struct cqe {
437 u8 cqe_byte[BNX2I_CQE_SIZE];
438};
439
440
441enum {
442#if defined(__LITTLE_ENDIAN)
443 CNIC_EVENT_COAL_INDEX = 0x0,
444 CNIC_SEND_DOORBELL = 0x4,
445 CNIC_EVENT_CQ_ARM = 0x7,
446 CNIC_RECV_DOORBELL = 0x8
447#elif defined(__BIG_ENDIAN)
448 CNIC_EVENT_COAL_INDEX = 0x2,
449 CNIC_SEND_DOORBELL = 0x6,
450 CNIC_EVENT_CQ_ARM = 0x4,
451 CNIC_RECV_DOORBELL = 0xa
452#endif
453};
454
455
456/*
457 * CQ DB
458 */
459struct bnx2x_iscsi_cq_pend_cmpl {
460 /* CQ producer, updated by Ustorm */
461 u16 ustrom_prod;
462 /* CQ pending completion counter */
463 u16 pend_cntr;
464};
465
466
467struct bnx2i_5771x_cq_db {
468 struct bnx2x_iscsi_cq_pend_cmpl qp_pend_cmpl[BNX2X_MAX_CQS];
469 /* CQ pending completion ITT array */
470 u16 itt[BNX2X_MAX_CQS];
471 /* Cstorm CQ sequence to notify array, updated by driver */;
472 u16 sqn[BNX2X_MAX_CQS];
473 u32 reserved[4] /* 16 byte allignment */;
474};
475
476
477struct bnx2i_5771x_sq_rq_db {
478 u16 prod_idx;
479 u8 reserved0[14]; /* Pad structure size to 16 bytes */
480};
481
482
483struct bnx2i_5771x_dbell_hdr {
484 u8 header;
485 /* 1 for rx doorbell, 0 for tx doorbell */
486#define B577XX_DOORBELL_HDR_RX (0x1<<0)
487#define B577XX_DOORBELL_HDR_RX_SHIFT 0
488 /* 0 for normal doorbell, 1 for advertise wnd doorbell */
489#define B577XX_DOORBELL_HDR_DB_TYPE (0x1<<1)
490#define B577XX_DOORBELL_HDR_DB_TYPE_SHIFT 1
491 /* rdma tx only: DPM transaction size specifier (64/128/256/512B) */
492#define B577XX_DOORBELL_HDR_DPM_SIZE (0x3<<2)
493#define B577XX_DOORBELL_HDR_DPM_SIZE_SHIFT 2
494 /* connection type */
495#define B577XX_DOORBELL_HDR_CONN_TYPE (0xF<<4)
496#define B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT 4
497};
498
499struct bnx2i_5771x_dbell {
500 struct bnx2i_5771x_dbell_hdr dbell;
501 u8 pad[3];
502
503};
504
505/**
506 * struct qp_info - QP (share queue region) atrributes structure
507 *
508 * @ctx_base: ioremapped pci register base to access doorbell register
509 * pertaining to this offloaded connection
510 * @sq_virt: virtual address of send queue (SQ) region
511 * @sq_phys: DMA address of SQ memory region
512 * @sq_mem_size: SQ size
513 * @sq_prod_qe: SQ producer entry pointer
514 * @sq_cons_qe: SQ consumer entry pointer
515 * @sq_first_qe: virtaul address of first entry in SQ
516 * @sq_last_qe: virtaul address of last entry in SQ
517 * @sq_prod_idx: SQ producer index
518 * @sq_cons_idx: SQ consumer index
519 * @sqe_left: number sq entry left
520 * @sq_pgtbl_virt: page table describing buffer consituting SQ region
521 * @sq_pgtbl_phys: dma address of 'sq_pgtbl_virt'
522 * @sq_pgtbl_size: SQ page table size
523 * @cq_virt: virtual address of completion queue (CQ) region
524 * @cq_phys: DMA address of RQ memory region
525 * @cq_mem_size: CQ size
526 * @cq_prod_qe: CQ producer entry pointer
527 * @cq_cons_qe: CQ consumer entry pointer
528 * @cq_first_qe: virtaul address of first entry in CQ
529 * @cq_last_qe: virtaul address of last entry in CQ
530 * @cq_prod_idx: CQ producer index
531 * @cq_cons_idx: CQ consumer index
532 * @cqe_left: number cq entry left
533 * @cqe_size: size of each CQ entry
534 * @cqe_exp_seq_sn: next expected CQE sequence number
535 * @cq_pgtbl_virt: page table describing buffer consituting CQ region
536 * @cq_pgtbl_phys: dma address of 'cq_pgtbl_virt'
537 * @cq_pgtbl_size: CQ page table size
538 * @rq_virt: virtual address of receive queue (RQ) region
539 * @rq_phys: DMA address of RQ memory region
540 * @rq_mem_size: RQ size
541 * @rq_prod_qe: RQ producer entry pointer
542 * @rq_cons_qe: RQ consumer entry pointer
543 * @rq_first_qe: virtaul address of first entry in RQ
544 * @rq_last_qe: virtaul address of last entry in RQ
545 * @rq_prod_idx: RQ producer index
546 * @rq_cons_idx: RQ consumer index
547 * @rqe_left: number rq entry left
548 * @rq_pgtbl_virt: page table describing buffer consituting RQ region
549 * @rq_pgtbl_phys: dma address of 'rq_pgtbl_virt'
550 * @rq_pgtbl_size: RQ page table size
551 *
552 * queue pair (QP) is a per connection shared data structure which is used
553 * to send work requests (SQ), receive completion notifications (CQ)
554 * and receive asynchoronous / scsi sense info (RQ). 'qp_info' structure
555 * below holds queue memory, consumer/producer indexes and page table
556 * information
557 */
558struct qp_info {
559 void __iomem *ctx_base;
560#define DPM_TRIGER_TYPE 0x40
561
562#define BNX2I_570x_QUE_DB_SIZE 0
563#define BNX2I_5771x_QUE_DB_SIZE 16
564 struct sqe *sq_virt;
565 dma_addr_t sq_phys;
566 u32 sq_mem_size;
567
568 struct sqe *sq_prod_qe;
569 struct sqe *sq_cons_qe;
570 struct sqe *sq_first_qe;
571 struct sqe *sq_last_qe;
572 u16 sq_prod_idx;
573 u16 sq_cons_idx;
574 u32 sqe_left;
575
576 void *sq_pgtbl_virt;
577 dma_addr_t sq_pgtbl_phys;
578 u32 sq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */
579
580 struct cqe *cq_virt;
581 dma_addr_t cq_phys;
582 u32 cq_mem_size;
583
584 struct cqe *cq_prod_qe;
585 struct cqe *cq_cons_qe;
586 struct cqe *cq_first_qe;
587 struct cqe *cq_last_qe;
588 u16 cq_prod_idx;
589 u16 cq_cons_idx;
590 u32 cqe_left;
591 u32 cqe_size;
592 u32 cqe_exp_seq_sn;
593
594 void *cq_pgtbl_virt;
595 dma_addr_t cq_pgtbl_phys;
596 u32 cq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */
597
598 struct rqe *rq_virt;
599 dma_addr_t rq_phys;
600 u32 rq_mem_size;
601
602 struct rqe *rq_prod_qe;
603 struct rqe *rq_cons_qe;
604 struct rqe *rq_first_qe;
605 struct rqe *rq_last_qe;
606 u16 rq_prod_idx;
607 u16 rq_cons_idx;
608 u32 rqe_left;
609
610 void *rq_pgtbl_virt;
611 dma_addr_t rq_pgtbl_phys;
612 u32 rq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */
613};
614
615
616
617/*
618 * CID handles
619 */
620struct ep_handles {
621 u32 fw_cid;
622 u32 drv_iscsi_cid;
623 u16 pg_cid;
624 u16 rsvd;
625};
626
627
628enum {
629 EP_STATE_IDLE = 0x0,
630 EP_STATE_PG_OFLD_START = 0x1,
631 EP_STATE_PG_OFLD_COMPL = 0x2,
632 EP_STATE_OFLD_START = 0x4,
633 EP_STATE_OFLD_COMPL = 0x8,
634 EP_STATE_CONNECT_START = 0x10,
635 EP_STATE_CONNECT_COMPL = 0x20,
636 EP_STATE_ULP_UPDATE_START = 0x40,
637 EP_STATE_ULP_UPDATE_COMPL = 0x80,
638 EP_STATE_DISCONN_START = 0x100,
639 EP_STATE_DISCONN_COMPL = 0x200,
640 EP_STATE_CLEANUP_START = 0x400,
641 EP_STATE_CLEANUP_CMPL = 0x800,
642 EP_STATE_TCP_FIN_RCVD = 0x1000,
643 EP_STATE_TCP_RST_RCVD = 0x2000,
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EW		 644 EP_STATE_LOGOUT_SENT = 0x4000,
645 EP_STATE_LOGOUT_RESP_RCVD = 0x8000,
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MC		 646 EP_STATE_PG_OFLD_FAILED = 0x1000000,
647 EP_STATE_ULP_UPDATE_FAILED = 0x2000000,
648 EP_STATE_CLEANUP_FAILED = 0x4000000,
649 EP_STATE_OFLD_FAILED = 0x8000000,
650 EP_STATE_CONNECT_FAILED = 0x10000000,
651 EP_STATE_DISCONN_TIMEDOUT = 0x20000000,
652};
653
654/**
655 * struct bnx2i_endpoint - representation of tcp connection in NX2 world
656 *
657 * @link: list head to link elements
658 * @hba: adapter to which this connection belongs
659 * @conn: iscsi connection this EP is linked to
46012e8b 660 * @cls_ep: associated iSCSI endpoint pointer
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MC		 661 * @sess: iscsi session this EP is linked to
662 * @cm_sk: cnic sock struct
663 * @hba_age: age to detect if 'iscsid' issues ep_disconnect()
664 * after HBA reset is completed by bnx2i/cnic/bnx2
665 * modules
666 * @state: tracks offload connection state machine
667 * @teardown_mode: indicates if conn teardown is abortive or orderly
668 * @qp: QP information
669 * @ids: contains chip allocated *context id* & driver assigned
670 * *iscsi cid*
671 * @ofld_timer: offload timer to detect timeout
672 * @ofld_wait: wait queue
673 *
674 * Endpoint Structure - equivalent of tcp socket structure
675 */
676struct bnx2i_endpoint {
677 struct list_head link;
678 struct bnx2i_hba *hba;
679 struct bnx2i_conn *conn;
46012e8b 680 struct iscsi_endpoint *cls_ep;
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MC		 681 struct cnic_sock *cm_sk;
682 u32 hba_age;
683 u32 state;
684 unsigned long timestamp;
685 int num_active_cmds;
686
687 struct qp_info qp;
688 struct ep_handles ids;
689 #define ep_iscsi_cid ids.drv_iscsi_cid
690 #define ep_cid ids.fw_cid
691 #define ep_pg_cid ids.pg_cid
692 struct timer_list ofld_timer;
693 wait_queue_head_t ofld_wait;
694};
695
696
697
698/* Global variables */
699extern unsigned int error_mask1, error_mask2;
700extern u64 iscsi_error_mask;
701extern unsigned int en_tcp_dack;
702extern unsigned int event_coal_div;
8776193b 703extern unsigned int event_coal_min;
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MC		 704
705extern struct scsi_transport_template *bnx2i_scsi_xport_template;
706extern struct iscsi_transport bnx2i_iscsi_transport;
707extern struct cnic_ulp_ops bnx2i_cnic_cb;
708
709extern unsigned int sq_size;
710extern unsigned int rq_size;
711
712extern struct device_attribute *bnx2i_dev_attributes[];
713
714
715
716/*
717 * Function Prototypes
718 */
719extern void bnx2i_identify_device(struct bnx2i_hba *hba);
720extern void bnx2i_register_device(struct bnx2i_hba *hba);
721
722extern void bnx2i_ulp_init(struct cnic_dev *dev);
723extern void bnx2i_ulp_exit(struct cnic_dev *dev);
724extern void bnx2i_start(void *handle);
725extern void bnx2i_stop(void *handle);
726extern void bnx2i_reg_dev_all(void);
727extern void bnx2i_unreg_dev_all(void);
728extern struct bnx2i_hba *get_adapter_list_head(void);
729
730struct bnx2i_conn *bnx2i_get_conn_from_id(struct bnx2i_hba *hba,
731 u16 iscsi_cid);
732
733int bnx2i_alloc_ep_pool(void);
734void bnx2i_release_ep_pool(void);
735struct bnx2i_endpoint *bnx2i_ep_ofld_list_next(struct bnx2i_hba *hba);
736struct bnx2i_endpoint *bnx2i_ep_destroy_list_next(struct bnx2i_hba *hba);
737
738struct bnx2i_hba *bnx2i_find_hba_for_cnic(struct cnic_dev *cnic);
739
740struct bnx2i_hba *bnx2i_alloc_hba(struct cnic_dev *cnic);
741void bnx2i_free_hba(struct bnx2i_hba *hba);
742
743void bnx2i_get_rq_buf(struct bnx2i_conn *conn, char *ptr, int len);
744void bnx2i_put_rq_buf(struct bnx2i_conn *conn, int count);
745
746void bnx2i_iscsi_unmap_sg_list(struct bnx2i_cmd *cmd);
747
748void bnx2i_drop_session(struct iscsi_cls_session *session);
749
750extern int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba);
751extern int bnx2i_send_iscsi_login(struct bnx2i_conn *conn,
752 struct iscsi_task *mtask);
753extern int bnx2i_send_iscsi_tmf(struct bnx2i_conn *conn,
754 struct iscsi_task *mtask);
755extern int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *conn,
756 struct bnx2i_cmd *cmnd);
757extern int bnx2i_send_iscsi_nopout(struct bnx2i_conn *conn,
758 struct iscsi_task *mtask, u32 ttt,
759 char *datap, int data_len, int unsol);
760extern int bnx2i_send_iscsi_logout(struct bnx2i_conn *conn,
761 struct iscsi_task *mtask);
762extern void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba,
763 struct bnx2i_cmd *cmd);
764extern void bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba,
765 struct bnx2i_endpoint *ep);
766extern void bnx2i_update_iscsi_conn(struct iscsi_conn *conn);
767extern void bnx2i_send_conn_destroy(struct bnx2i_hba *hba,
768 struct bnx2i_endpoint *ep);
769
770extern int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba,
771 struct bnx2i_endpoint *ep);
772extern void bnx2i_free_qp_resc(struct bnx2i_hba *hba,
773 struct bnx2i_endpoint *ep);
774extern void bnx2i_ep_ofld_timer(unsigned long data);
775extern struct bnx2i_endpoint *bnx2i_find_ep_in_ofld_list(
776 struct bnx2i_hba *hba, u32 iscsi_cid);
777extern struct bnx2i_endpoint *bnx2i_find_ep_in_destroy_list(
778 struct bnx2i_hba *hba, u32 iscsi_cid);
779
780extern int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep);
781extern void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action);
782
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EW		 783extern int bnx2i_hw_ep_disconnect(struct bnx2i_endpoint *bnx2i_ep);
784
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MC		 785/* Debug related function prototypes */
786extern void bnx2i_print_pend_cmd_queue(struct bnx2i_conn *conn);
787extern void bnx2i_print_active_cmd_queue(struct bnx2i_conn *conn);
788extern void bnx2i_print_xmit_pdu_queue(struct bnx2i_conn *conn);
789extern void bnx2i_print_recv_state(struct bnx2i_conn *conn);
790
791#endif
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