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[SCSI] bnx2i: Added support for the 57712(E) devices
[deliverable/linux.git] / drivers / scsi / bnx2i / bnx2i.h
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cf4e6363
MC		 1/* bnx2i.h: Broadcom NetXtreme II iSCSI driver.
2 *
11cec1e2 3 * Copyright (c) 2006 - 2010 Broadcom Corporation
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MC		 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)
11cec1e2 12 * Maintained by: Eddie Wai (eddie.wai@broadcom.com)
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MC		 13 */
14
15#ifndef _BNX2I_H_
16#define _BNX2I_H_
17
18#include <linux/module.h>
19#include <linux/moduleparam.h>
20
21#include <linux/errno.h>
22#include <linux/pci.h>
23#include <linux/spinlock.h>
24#include <linux/interrupt.h>
25#include <linux/sched.h>
26#include <linux/in.h>
27#include <linux/kfifo.h>
28#include <linux/netdevice.h>
29#include <linux/completion.h>
30
31#include <scsi/scsi_cmnd.h>
32#include <scsi/scsi_device.h>
33#include <scsi/scsi_eh.h>
34#include <scsi/scsi_host.h>
35#include <scsi/scsi.h>
36#include <scsi/iscsi_proto.h>
37#include <scsi/libiscsi.h>
38#include <scsi/scsi_transport_iscsi.h>
39
40#include "../../net/cnic_if.h"
41#include "57xx_iscsi_hsi.h"
42#include "57xx_iscsi_constants.h"
43
44#define BNX2_ISCSI_DRIVER_NAME "bnx2i"
45
46#define BNX2I_MAX_ADAPTERS 8
47
48#define ISCSI_MAX_CONNS_PER_HBA 128
49#define ISCSI_MAX_SESS_PER_HBA ISCSI_MAX_CONNS_PER_HBA
50#define ISCSI_MAX_CMDS_PER_SESS 128
51
52/* Total active commands across all connections supported by devices */
53#define ISCSI_MAX_CMDS_PER_HBA_5708 (28 * (ISCSI_MAX_CMDS_PER_SESS - 1))
54#define ISCSI_MAX_CMDS_PER_HBA_5709 (128 * (ISCSI_MAX_CMDS_PER_SESS - 1))
55#define ISCSI_MAX_CMDS_PER_HBA_57710 (256 * (ISCSI_MAX_CMDS_PER_SESS - 1))
56
57#define ISCSI_MAX_BDS_PER_CMD 32
58
59#define MAX_PAGES_PER_CTRL_STRUCT_POOL 8
60#define BNX2I_RESERVED_SLOW_PATH_CMD_SLOTS 4
61
523224a3
DK		 62#define BNX2I_5771X_DBELL_PAGE_SIZE 128
63
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MC		 64/* 5706/08 hardware has limit on maximum buffer size per BD it can handle */
65#define MAX_BD_LENGTH 65535
66#define BD_SPLIT_SIZE 32768
67
68/* min, max & default values for SQ/RQ/CQ size, configurable via' modparam */
69#define BNX2I_SQ_WQES_MIN 16
70#define BNX2I_570X_SQ_WQES_MAX 128
71#define BNX2I_5770X_SQ_WQES_MAX 512
72#define BNX2I_570X_SQ_WQES_DEFAULT 128
73#define BNX2I_5770X_SQ_WQES_DEFAULT 256
74
75#define BNX2I_570X_CQ_WQES_MAX 128
76#define BNX2I_5770X_CQ_WQES_MAX 512
77
78#define BNX2I_RQ_WQES_MIN 16
79#define BNX2I_RQ_WQES_MAX 32
80#define BNX2I_RQ_WQES_DEFAULT 16
81
82/* CCELLs per conn */
83#define BNX2I_CCELLS_MIN 16
84#define BNX2I_CCELLS_MAX 96
85#define BNX2I_CCELLS_DEFAULT 64
86
87#define ITT_INVALID_SIGNATURE 0xFFFF
88
89#define ISCSI_CMD_CLEANUP_TIMEOUT 100
90
91#define BNX2I_CONN_CTX_BUF_SIZE 16384
92
93#define BNX2I_SQ_WQE_SIZE 64
94#define BNX2I_RQ_WQE_SIZE 256
95#define BNX2I_CQE_SIZE 64
96
97#define MB_KERNEL_CTX_SHIFT 8
98#define MB_KERNEL_CTX_SIZE (1 << MB_KERNEL_CTX_SHIFT)
99
100#define CTX_SHIFT 7
101#define GET_CID_NUM(cid_addr) ((cid_addr) >> CTX_SHIFT)
102
103#define CTX_OFFSET 0x10000
104#define MAX_CID_CNT 0x4000
105
53203244
AV		 106#define BNX2I_570X_PAGE_SIZE_DEFAULT 4096
107
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MC		 108/* 5709 context registers */
109#define BNX2_MQ_CONFIG2 0x00003d00
110#define BNX2_MQ_CONFIG2_CONT_SZ (0x7L<<4)
111#define BNX2_MQ_CONFIG2_FIRST_L4L5 (0x1fL<<8)
112
113/* 57710's BAR2 is mapped to doorbell registers */
114#define BNX2X_DOORBELL_PCI_BAR 2
115#define BNX2X_MAX_CQS 8
116
117#define CNIC_ARM_CQE 1
118#define CNIC_DISARM_CQE 0
119
120#define REG_RD(__hba, offset) \
121 readl(__hba->regview + offset)
122#define REG_WR(__hba, offset, val) \
123 writel(val, __hba->regview + offset)
124
125
126/**
127 * struct generic_pdu_resc - login pdu resource structure
128 *
129 * @req_buf: driver buffer used to stage payload associated with
130 * the login request
131 * @req_dma_addr: dma address for iscsi login request payload buffer
132 * @req_buf_size: actual login request payload length
133 * @req_wr_ptr: pointer into login request buffer when next data is
134 * to be written
135 * @resp_hdr: iscsi header where iscsi login response header is to
136 * be recreated
137 * @resp_buf: buffer to stage login response payload
138 * @resp_dma_addr: login response payload buffer dma address
139 * @resp_buf_size: login response paylod length
140 * @resp_wr_ptr: pointer into login response buffer when next data is
141 * to be written
142 * @req_bd_tbl: iscsi login request payload BD table
143 * @req_bd_dma: login request BD table dma address
144 * @resp_bd_tbl: iscsi login response payload BD table
145 * @resp_bd_dma: login request BD table dma address
146 *
147 * following structure defines buffer info for generic pdus such as iSCSI Login,
148 * Logout and NOP
149 */
150struct generic_pdu_resc {
151 char *req_buf;
152 dma_addr_t req_dma_addr;
153 u32 req_buf_size;
154 char *req_wr_ptr;
155 struct iscsi_hdr resp_hdr;
156 char *resp_buf;
157 dma_addr_t resp_dma_addr;
158 u32 resp_buf_size;
159 char *resp_wr_ptr;
160 char *req_bd_tbl;
161 dma_addr_t req_bd_dma;
162 char *resp_bd_tbl;
163 dma_addr_t resp_bd_dma;
164};
165
166
167/**
168 * struct bd_resc_page - tracks DMA'able memory allocated for BD tables
169 *
170 * @link: list head to link elements
171 * @max_ptrs: maximun pointers that can be stored in this page
172 * @num_valid: number of pointer valid in this page
173 * @page: base addess for page pointer array
174 *
175 * structure to track DMA'able memory allocated for command BD tables
176 */
177struct bd_resc_page {
178 struct list_head link;
179 u32 max_ptrs;
180 u32 num_valid;
181 void *page[1];
182};
183
184
185/**
186 * struct io_bdt - I/O buffer destricptor table
187 *
188 * @bd_tbl: BD table's virtual address
189 * @bd_tbl_dma: BD table's dma address
190 * @bd_valid: num valid BD entries
191 *
192 * IO BD table
193 */
194struct io_bdt {
195 struct iscsi_bd *bd_tbl;
196 dma_addr_t bd_tbl_dma;
197 u16 bd_valid;
198};
199
200
201/**
202 * bnx2i_cmd - iscsi command structure
203 *
204 * @scsi_cmd: SCSI-ML task pointer corresponding to this iscsi cmd
205 * @sg: SG list
206 * @io_tbl: buffer descriptor (BD) table
207 * @bd_tbl_dma: buffer descriptor (BD) table's dma address
208 */
209struct bnx2i_cmd {
210 struct iscsi_hdr hdr;
211 struct bnx2i_conn *conn;
212 struct scsi_cmnd *scsi_cmd;
213 struct scatterlist *sg;
214 struct io_bdt io_tbl;
215 dma_addr_t bd_tbl_dma;
216 struct bnx2i_cmd_request req;
217};
218
219
220/**
221 * struct bnx2i_conn - iscsi connection structure
222 *
223 * @cls_conn: pointer to iscsi cls conn
224 * @hba: adapter structure pointer
225 * @iscsi_conn_cid: iscsi conn id
226 * @fw_cid: firmware iscsi context id
227 * @ep: endpoint structure pointer
228 * @gen_pdu: login/nopout/logout pdu resources
229 * @violation_notified: bit mask used to track iscsi error/warning messages
230 * already printed out
231 *
232 * iSCSI connection structure
233 */
234struct bnx2i_conn {
235 struct iscsi_cls_conn *cls_conn;
236 struct bnx2i_hba *hba;
237 struct completion cmd_cleanup_cmpl;
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MC		 238
239 u32 iscsi_conn_cid;
240#define BNX2I_CID_RESERVED 0x5AFF
241 u32 fw_cid;
242
243 struct timer_list poll_timer;
244 /*
245 * Queue Pair (QP) related structure elements.
246 */
247 struct bnx2i_endpoint *ep;
248
249 /*
250 * Buffer for login negotiation process
251 */
252 struct generic_pdu_resc gen_pdu;
253 u64 violation_notified;
254};
255
256
257
258/**
259 * struct iscsi_cid_queue - Per adapter iscsi cid queue
260 *
261 * @cid_que_base: queue base memory
262 * @cid_que: queue memory pointer
263 * @cid_q_prod_idx: produce index
264 * @cid_q_cons_idx: consumer index
265 * @cid_q_max_idx: max index. used to detect wrap around condition
266 * @cid_free_cnt: queue size
267 * @conn_cid_tbl: iscsi cid to conn structure mapping table
268 *
269 * Per adapter iSCSI CID Queue
270 */
271struct iscsi_cid_queue {
272 void *cid_que_base;
273 u32 *cid_que;
274 u32 cid_q_prod_idx;
275 u32 cid_q_cons_idx;
276 u32 cid_q_max_idx;
277 u32 cid_free_cnt;
278 struct bnx2i_conn **conn_cid_tbl;
279};
280
281/**
282 * struct bnx2i_hba - bnx2i adapter structure
283 *
284 * @link: list head to link elements
285 * @cnic: pointer to cnic device
286 * @pcidev: pointer to pci dev
287 * @netdev: pointer to netdev structure
288 * @regview: mapped PCI register space
289 * @age: age, incremented by every recovery
290 * @cnic_dev_type: cnic device type, 5706/5708/5709/57710
291 * @mail_queue_access: mailbox queue access mode, applicable to 5709 only
292 * @reg_with_cnic: indicates whether the device is register with CNIC
293 * @adapter_state: adapter state, UP, GOING_DOWN, LINK_DOWN
294 * @mtu_supported: Ethernet MTU supported
295 * @shost: scsi host pointer
296 * @max_sqes: SQ size
297 * @max_rqes: RQ size
298 * @max_cqes: CQ size
299 * @num_ccell: number of command cells per connection
300 * @ofld_conns_active: active connection list
55e15c97 301 * @eh_wait: wait queue for the endpoint to shutdown
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MC		 302 * @max_active_conns: max offload connections supported by this device
303 * @cid_que: iscsi cid queue
304 * @ep_rdwr_lock: read / write lock to synchronize various ep lists
305 * @ep_ofld_list: connection list for pending offload completion
46012e8b 306 * @ep_active_list: connection list for active offload endpoints
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MC		 307 * @ep_destroy_list: connection list for pending offload completion
308 * @mp_bd_tbl: BD table to be used with middle path requests
309 * @mp_bd_dma: DMA address of 'mp_bd_tbl' memory buffer
310 * @dummy_buffer: Dummy buffer to be used with zero length scsicmd reqs
311 * @dummy_buf_dma: DMA address of 'dummy_buffer' memory buffer
312 * @lock: lock to synchonize access to hba structure
55e15c97 313 * @hba_shutdown_tmo: Timeout value to shutdown each connection
e37d2c47
EW		 314 * @conn_teardown_tmo: Timeout value to tear down each connection
315 * @conn_ctx_destroy_tmo: Timeout value to destroy context of each connection
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MC		 316 * @pci_did: PCI device ID
317 * @pci_vid: PCI vendor ID
318 * @pci_sdid: PCI subsystem device ID
319 * @pci_svid: PCI subsystem vendor ID
320 * @pci_func: PCI function number in system pci tree
321 * @pci_devno: PCI device number in system pci tree
322 * @num_wqe_sent: statistic counter, total wqe's sent
323 * @num_cqe_rcvd: statistic counter, total cqe's received
324 * @num_intr_claimed: statistic counter, total interrupts claimed
325 * @link_changed_count: statistic counter, num of link change notifications
326 * received
327 * @ipaddr_changed_count: statistic counter, num times IP address changed while
328 * at least one connection is offloaded
329 * @num_sess_opened: statistic counter, total num sessions opened
330 * @num_conn_opened: statistic counter, total num conns opened on this hba
331 * @ctx_ccell_tasks: captures number of ccells and tasks supported by
332 * currently offloaded connection, used to decode
333 * context memory
334 *
335 * Adapter Data Structure
336 */
337struct bnx2i_hba {
338 struct list_head link;
339 struct cnic_dev *cnic;
340 struct pci_dev *pcidev;
341 struct net_device *netdev;
342 void __iomem *regview;
343
344 u32 age;
345 unsigned long cnic_dev_type;
346 #define BNX2I_NX2_DEV_5706 0x0
347 #define BNX2I_NX2_DEV_5708 0x1
348 #define BNX2I_NX2_DEV_5709 0x2
349 #define BNX2I_NX2_DEV_57710 0x3
350 u32 mail_queue_access;
351 #define BNX2I_MQ_KERNEL_MODE 0x0
352 #define BNX2I_MQ_KERNEL_BYPASS_MODE 0x1
353 #define BNX2I_MQ_BIN_MODE 0x2
354 unsigned long reg_with_cnic;
355 #define BNX2I_CNIC_REGISTERED 1
356
357 unsigned long adapter_state;
358 #define ADAPTER_STATE_UP 0
359 #define ADAPTER_STATE_GOING_DOWN 1
360 #define ADAPTER_STATE_LINK_DOWN 2
361 #define ADAPTER_STATE_INIT_FAILED 31
362 unsigned int mtu_supported;
363 #define BNX2I_MAX_MTU_SUPPORTED 1500
364
365 struct Scsi_Host *shost;
366
367 u32 max_sqes;
368 u32 max_rqes;
369 u32 max_cqes;
370 u32 num_ccell;
371
372 int ofld_conns_active;
490475a9 373 wait_queue_head_t eh_wait;
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MC		 374
375 int max_active_conns;
376 struct iscsi_cid_queue cid_que;
377
378 rwlock_t ep_rdwr_lock;
379 struct list_head ep_ofld_list;
46012e8b 380 struct list_head ep_active_list;
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MC		 381 struct list_head ep_destroy_list;
382
383 /*
384 * BD table to be used with MP (Middle Path requests.
385 */
386 char *mp_bd_tbl;
387 dma_addr_t mp_bd_dma;
388 char *dummy_buffer;
389 dma_addr_t dummy_buf_dma;
390
391 spinlock_t lock; /* protects hba structure access */
392 struct mutex net_dev_lock;/* sync net device access */
393
490475a9 394 int hba_shutdown_tmo;
e37d2c47
EW		 395 int conn_teardown_tmo;
396 int conn_ctx_destroy_tmo;
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MC		 397 /*
398 * PCI related info.
399 */
400 u16 pci_did;
401 u16 pci_vid;
402 u16 pci_sdid;
403 u16 pci_svid;
404 u16 pci_func;
405 u16 pci_devno;
406
407 /*
408 * Following are a bunch of statistics useful during development
409 * and later stage for score boarding.
410 */
411 u32 num_wqe_sent;
412 u32 num_cqe_rcvd;
413 u32 num_intr_claimed;
414 u32 link_changed_count;
415 u32 ipaddr_changed_count;
416 u32 num_sess_opened;
417 u32 num_conn_opened;
418 unsigned int ctx_ccell_tasks;
419};
420
421
422/*******************************************************************************
423 * QP [ SQ / RQ / CQ ] info.
424 ******************************************************************************/
425
426/*
427 * SQ/RQ/CQ generic structure definition
428 */
429struct sqe {
430 u8 sqe_byte[BNX2I_SQ_WQE_SIZE];
431};
432
433struct rqe {
434 u8 rqe_byte[BNX2I_RQ_WQE_SIZE];
435};
436
437struct cqe {
438 u8 cqe_byte[BNX2I_CQE_SIZE];
439};
440
441
442enum {
443#if defined(__LITTLE_ENDIAN)
444 CNIC_EVENT_COAL_INDEX = 0x0,
445 CNIC_SEND_DOORBELL = 0x4,
446 CNIC_EVENT_CQ_ARM = 0x7,
447 CNIC_RECV_DOORBELL = 0x8
448#elif defined(__BIG_ENDIAN)
449 CNIC_EVENT_COAL_INDEX = 0x2,
450 CNIC_SEND_DOORBELL = 0x6,
451 CNIC_EVENT_CQ_ARM = 0x4,
452 CNIC_RECV_DOORBELL = 0xa
453#endif
454};
455
456
457/*
458 * CQ DB
459 */
460struct bnx2x_iscsi_cq_pend_cmpl {
461 /* CQ producer, updated by Ustorm */
462 u16 ustrom_prod;
463 /* CQ pending completion counter */
464 u16 pend_cntr;
465};
466
467
468struct bnx2i_5771x_cq_db {
469 struct bnx2x_iscsi_cq_pend_cmpl qp_pend_cmpl[BNX2X_MAX_CQS];
470 /* CQ pending completion ITT array */
471 u16 itt[BNX2X_MAX_CQS];
472 /* Cstorm CQ sequence to notify array, updated by driver */;
473 u16 sqn[BNX2X_MAX_CQS];
474 u32 reserved[4] /* 16 byte allignment */;
475};
476
477
478struct bnx2i_5771x_sq_rq_db {
479 u16 prod_idx;
480 u8 reserved0[14]; /* Pad structure size to 16 bytes */
481};
482
483
484struct bnx2i_5771x_dbell_hdr {
485 u8 header;
486 /* 1 for rx doorbell, 0 for tx doorbell */
487#define B577XX_DOORBELL_HDR_RX (0x1<<0)
488#define B577XX_DOORBELL_HDR_RX_SHIFT 0
489 /* 0 for normal doorbell, 1 for advertise wnd doorbell */
490#define B577XX_DOORBELL_HDR_DB_TYPE (0x1<<1)
491#define B577XX_DOORBELL_HDR_DB_TYPE_SHIFT 1
492 /* rdma tx only: DPM transaction size specifier (64/128/256/512B) */
493#define B577XX_DOORBELL_HDR_DPM_SIZE (0x3<<2)
494#define B577XX_DOORBELL_HDR_DPM_SIZE_SHIFT 2
495 /* connection type */
496#define B577XX_DOORBELL_HDR_CONN_TYPE (0xF<<4)
497#define B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT 4
498};
499
500struct bnx2i_5771x_dbell {
501 struct bnx2i_5771x_dbell_hdr dbell;
502 u8 pad[3];
503
504};
505
506/**
507 * struct qp_info - QP (share queue region) atrributes structure
508 *
509 * @ctx_base: ioremapped pci register base to access doorbell register
510 * pertaining to this offloaded connection
511 * @sq_virt: virtual address of send queue (SQ) region
512 * @sq_phys: DMA address of SQ memory region
513 * @sq_mem_size: SQ size
514 * @sq_prod_qe: SQ producer entry pointer
515 * @sq_cons_qe: SQ consumer entry pointer
516 * @sq_first_qe: virtaul address of first entry in SQ
517 * @sq_last_qe: virtaul address of last entry in SQ
518 * @sq_prod_idx: SQ producer index
519 * @sq_cons_idx: SQ consumer index
520 * @sqe_left: number sq entry left
521 * @sq_pgtbl_virt: page table describing buffer consituting SQ region
522 * @sq_pgtbl_phys: dma address of 'sq_pgtbl_virt'
523 * @sq_pgtbl_size: SQ page table size
524 * @cq_virt: virtual address of completion queue (CQ) region
525 * @cq_phys: DMA address of RQ memory region
526 * @cq_mem_size: CQ size
527 * @cq_prod_qe: CQ producer entry pointer
528 * @cq_cons_qe: CQ consumer entry pointer
529 * @cq_first_qe: virtaul address of first entry in CQ
530 * @cq_last_qe: virtaul address of last entry in CQ
531 * @cq_prod_idx: CQ producer index
532 * @cq_cons_idx: CQ consumer index
533 * @cqe_left: number cq entry left
534 * @cqe_size: size of each CQ entry
535 * @cqe_exp_seq_sn: next expected CQE sequence number
536 * @cq_pgtbl_virt: page table describing buffer consituting CQ region
537 * @cq_pgtbl_phys: dma address of 'cq_pgtbl_virt'
538 * @cq_pgtbl_size: CQ page table size
539 * @rq_virt: virtual address of receive queue (RQ) region
540 * @rq_phys: DMA address of RQ memory region
541 * @rq_mem_size: RQ size
542 * @rq_prod_qe: RQ producer entry pointer
543 * @rq_cons_qe: RQ consumer entry pointer
544 * @rq_first_qe: virtaul address of first entry in RQ
545 * @rq_last_qe: virtaul address of last entry in RQ
546 * @rq_prod_idx: RQ producer index
547 * @rq_cons_idx: RQ consumer index
548 * @rqe_left: number rq entry left
549 * @rq_pgtbl_virt: page table describing buffer consituting RQ region
550 * @rq_pgtbl_phys: dma address of 'rq_pgtbl_virt'
551 * @rq_pgtbl_size: RQ page table size
552 *
553 * queue pair (QP) is a per connection shared data structure which is used
554 * to send work requests (SQ), receive completion notifications (CQ)
555 * and receive asynchoronous / scsi sense info (RQ). 'qp_info' structure
556 * below holds queue memory, consumer/producer indexes and page table
557 * information
558 */
559struct qp_info {
560 void __iomem *ctx_base;
561#define DPM_TRIGER_TYPE 0x40
562
563#define BNX2I_570x_QUE_DB_SIZE 0
564#define BNX2I_5771x_QUE_DB_SIZE 16
565 struct sqe *sq_virt;
566 dma_addr_t sq_phys;
567 u32 sq_mem_size;
568
569 struct sqe *sq_prod_qe;
570 struct sqe *sq_cons_qe;
571 struct sqe *sq_first_qe;
572 struct sqe *sq_last_qe;
573 u16 sq_prod_idx;
574 u16 sq_cons_idx;
575 u32 sqe_left;
576
577 void *sq_pgtbl_virt;
578 dma_addr_t sq_pgtbl_phys;
579 u32 sq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */
580
581 struct cqe *cq_virt;
582 dma_addr_t cq_phys;
583 u32 cq_mem_size;
584
585 struct cqe *cq_prod_qe;
586 struct cqe *cq_cons_qe;
587 struct cqe *cq_first_qe;
588 struct cqe *cq_last_qe;
589 u16 cq_prod_idx;
590 u16 cq_cons_idx;
591 u32 cqe_left;
592 u32 cqe_size;
593 u32 cqe_exp_seq_sn;
594
595 void *cq_pgtbl_virt;
596 dma_addr_t cq_pgtbl_phys;
597 u32 cq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */
598
599 struct rqe *rq_virt;
600 dma_addr_t rq_phys;
601 u32 rq_mem_size;
602
603 struct rqe *rq_prod_qe;
604 struct rqe *rq_cons_qe;
605 struct rqe *rq_first_qe;
606 struct rqe *rq_last_qe;
607 u16 rq_prod_idx;
608 u16 rq_cons_idx;
609 u32 rqe_left;
610
611 void *rq_pgtbl_virt;
612 dma_addr_t rq_pgtbl_phys;
613 u32 rq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */
614};
615
616
617
618/*
619 * CID handles
620 */
621struct ep_handles {
622 u32 fw_cid;
623 u32 drv_iscsi_cid;
624 u16 pg_cid;
625 u16 rsvd;
626};
627
628
629enum {
630 EP_STATE_IDLE = 0x0,
631 EP_STATE_PG_OFLD_START = 0x1,
632 EP_STATE_PG_OFLD_COMPL = 0x2,
633 EP_STATE_OFLD_START = 0x4,
634 EP_STATE_OFLD_COMPL = 0x8,
635 EP_STATE_CONNECT_START = 0x10,
636 EP_STATE_CONNECT_COMPL = 0x20,
637 EP_STATE_ULP_UPDATE_START = 0x40,
638 EP_STATE_ULP_UPDATE_COMPL = 0x80,
639 EP_STATE_DISCONN_START = 0x100,
640 EP_STATE_DISCONN_COMPL = 0x200,
641 EP_STATE_CLEANUP_START = 0x400,
642 EP_STATE_CLEANUP_CMPL = 0x800,
643 EP_STATE_TCP_FIN_RCVD = 0x1000,
644 EP_STATE_TCP_RST_RCVD = 0x2000,
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EW		 645 EP_STATE_LOGOUT_SENT = 0x4000,
646 EP_STATE_LOGOUT_RESP_RCVD = 0x8000,
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MC		 647 EP_STATE_PG_OFLD_FAILED = 0x1000000,
648 EP_STATE_ULP_UPDATE_FAILED = 0x2000000,
649 EP_STATE_CLEANUP_FAILED = 0x4000000,
650 EP_STATE_OFLD_FAILED = 0x8000000,
651 EP_STATE_CONNECT_FAILED = 0x10000000,
652 EP_STATE_DISCONN_TIMEDOUT = 0x20000000,
bee34877 653 EP_STATE_OFLD_FAILED_CID_BUSY = 0x80000000,
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MC		 654};
655
656/**
657 * struct bnx2i_endpoint - representation of tcp connection in NX2 world
658 *
659 * @link: list head to link elements
660 * @hba: adapter to which this connection belongs
661 * @conn: iscsi connection this EP is linked to
46012e8b 662 * @cls_ep: associated iSCSI endpoint pointer
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MC		 663 * @sess: iscsi session this EP is linked to
664 * @cm_sk: cnic sock struct
665 * @hba_age: age to detect if 'iscsid' issues ep_disconnect()
666 * after HBA reset is completed by bnx2i/cnic/bnx2
667 * modules
668 * @state: tracks offload connection state machine
669 * @teardown_mode: indicates if conn teardown is abortive or orderly
670 * @qp: QP information
671 * @ids: contains chip allocated *context id* & driver assigned
672 * *iscsi cid*
673 * @ofld_timer: offload timer to detect timeout
674 * @ofld_wait: wait queue
675 *
676 * Endpoint Structure - equivalent of tcp socket structure
677 */
678struct bnx2i_endpoint {
679 struct list_head link;
680 struct bnx2i_hba *hba;
681 struct bnx2i_conn *conn;
46012e8b 682 struct iscsi_endpoint *cls_ep;
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MC		 683 struct cnic_sock *cm_sk;
684 u32 hba_age;
685 u32 state;
686 unsigned long timestamp;
687 int num_active_cmds;
688
689 struct qp_info qp;
690 struct ep_handles ids;
691 #define ep_iscsi_cid ids.drv_iscsi_cid
692 #define ep_cid ids.fw_cid
693 #define ep_pg_cid ids.pg_cid
694 struct timer_list ofld_timer;
695 wait_queue_head_t ofld_wait;
696};
697
698
699
700/* Global variables */
701extern unsigned int error_mask1, error_mask2;
702extern u64 iscsi_error_mask;
703extern unsigned int en_tcp_dack;
704extern unsigned int event_coal_div;
8776193b 705extern unsigned int event_coal_min;
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MC		 706
707extern struct scsi_transport_template *bnx2i_scsi_xport_template;
708extern struct iscsi_transport bnx2i_iscsi_transport;
709extern struct cnic_ulp_ops bnx2i_cnic_cb;
710
711extern unsigned int sq_size;
712extern unsigned int rq_size;
713
714extern struct device_attribute *bnx2i_dev_attributes[];
715
716
717
718/*
719 * Function Prototypes
720 */
721extern void bnx2i_identify_device(struct bnx2i_hba *hba);
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MC		 722
723extern void bnx2i_ulp_init(struct cnic_dev *dev);
724extern void bnx2i_ulp_exit(struct cnic_dev *dev);
725extern void bnx2i_start(void *handle);
726extern void bnx2i_stop(void *handle);
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MC		 727extern struct bnx2i_hba *get_adapter_list_head(void);
728
729struct bnx2i_conn *bnx2i_get_conn_from_id(struct bnx2i_hba *hba,
730 u16 iscsi_cid);
731
732int bnx2i_alloc_ep_pool(void);
733void bnx2i_release_ep_pool(void);
734struct bnx2i_endpoint *bnx2i_ep_ofld_list_next(struct bnx2i_hba *hba);
735struct bnx2i_endpoint *bnx2i_ep_destroy_list_next(struct bnx2i_hba *hba);
736
737struct bnx2i_hba *bnx2i_find_hba_for_cnic(struct cnic_dev *cnic);
738
739struct bnx2i_hba *bnx2i_alloc_hba(struct cnic_dev *cnic);
740void bnx2i_free_hba(struct bnx2i_hba *hba);
741
742void bnx2i_get_rq_buf(struct bnx2i_conn *conn, char *ptr, int len);
743void bnx2i_put_rq_buf(struct bnx2i_conn *conn, int count);
744
745void bnx2i_iscsi_unmap_sg_list(struct bnx2i_cmd *cmd);
746
747void bnx2i_drop_session(struct iscsi_cls_session *session);
748
749extern int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba);
750extern int bnx2i_send_iscsi_login(struct bnx2i_conn *conn,
751 struct iscsi_task *mtask);
752extern int bnx2i_send_iscsi_tmf(struct bnx2i_conn *conn,
753 struct iscsi_task *mtask);
754extern int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *conn,
755 struct bnx2i_cmd *cmnd);
756extern int bnx2i_send_iscsi_nopout(struct bnx2i_conn *conn,
39304072 757 struct iscsi_task *mtask,
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MC		 758 char *datap, int data_len, int unsol);
759extern int bnx2i_send_iscsi_logout(struct bnx2i_conn *conn,
760 struct iscsi_task *mtask);
761extern void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba,
762 struct bnx2i_cmd *cmd);
bee34877 763extern int bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba,
cf4e6363 764 struct bnx2i_endpoint *ep);
bee34877
EW		 765extern void bnx2i_update_iscsi_conn(struct iscsi_conn *conn);
766extern int bnx2i_send_conn_destroy(struct bnx2i_hba *hba,
767 struct bnx2i_endpoint *ep);
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MC		 768
769extern int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba,
770 struct bnx2i_endpoint *ep);
771extern void bnx2i_free_qp_resc(struct bnx2i_hba *hba,
772 struct bnx2i_endpoint *ep);
773extern void bnx2i_ep_ofld_timer(unsigned long data);
774extern struct bnx2i_endpoint *bnx2i_find_ep_in_ofld_list(
775 struct bnx2i_hba *hba, u32 iscsi_cid);
776extern struct bnx2i_endpoint *bnx2i_find_ep_in_destroy_list(
777 struct bnx2i_hba *hba, u32 iscsi_cid);
778
779extern int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep);
780extern void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action);
781
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EW		 782extern int bnx2i_hw_ep_disconnect(struct bnx2i_endpoint *bnx2i_ep);
783
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MC		 784/* Debug related function prototypes */
785extern void bnx2i_print_pend_cmd_queue(struct bnx2i_conn *conn);
786extern void bnx2i_print_active_cmd_queue(struct bnx2i_conn *conn);
787extern void bnx2i_print_xmit_pdu_queue(struct bnx2i_conn *conn);
788extern void bnx2i_print_recv_state(struct bnx2i_conn *conn);
789
790#endif
Linux kernel - Deliverables
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