IPVS: fix netns if reading ip_vs_* procfs entries
[linux-2.6/linux-mips.git] / drivers / scsi / bnx2i / bnx2i.h
blobcfd59023227b649116b24ea1c5938b9fe5ed6c8c
1 /* bnx2i.h: Broadcom NetXtreme II iSCSI driver.
3 * Copyright (c) 2006 - 2010 Broadcom Corporation
4 * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved.
5 * Copyright (c) 2007, 2008 Mike Christie
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.
11 * Written by: Anil Veerabhadrappa (anilgv@broadcom.com)
12 * Maintained by: Eddie Wai (eddie.wai@broadcom.com)
15 #ifndef _BNX2I_H_
16 #define _BNX2I_H_
18 #include <linux/module.h>
19 #include <linux/moduleparam.h>
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>
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>
40 #include "../../net/cnic_if.h"
41 #include "57xx_iscsi_hsi.h"
42 #include "57xx_iscsi_constants.h"
44 #define BNX2_ISCSI_DRIVER_NAME "bnx2i"
46 #define BNX2I_MAX_ADAPTERS 8
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
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))
57 #define ISCSI_MAX_BDS_PER_CMD 32
59 #define MAX_PAGES_PER_CTRL_STRUCT_POOL 8
60 #define BNX2I_RESERVED_SLOW_PATH_CMD_SLOTS 4
62 #define BNX2I_5771X_DBELL_PAGE_SIZE 128
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
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
75 #define BNX2I_570X_CQ_WQES_MAX 128
76 #define BNX2I_5770X_CQ_WQES_MAX 512
78 #define BNX2I_RQ_WQES_MIN 16
79 #define BNX2I_RQ_WQES_MAX 32
80 #define BNX2I_RQ_WQES_DEFAULT 16
82 /* CCELLs per conn */
83 #define BNX2I_CCELLS_MIN 16
84 #define BNX2I_CCELLS_MAX 96
85 #define BNX2I_CCELLS_DEFAULT 64
87 #define ITT_INVALID_SIGNATURE 0xFFFF
89 #define ISCSI_CMD_CLEANUP_TIMEOUT 100
91 #define BNX2I_CONN_CTX_BUF_SIZE 16384
93 #define BNX2I_SQ_WQE_SIZE 64
94 #define BNX2I_RQ_WQE_SIZE 256
95 #define BNX2I_CQE_SIZE 64
97 #define MB_KERNEL_CTX_SHIFT 8
98 #define MB_KERNEL_CTX_SIZE (1 << MB_KERNEL_CTX_SHIFT)
100 #define CTX_SHIFT 7
101 #define GET_CID_NUM(cid_addr) ((cid_addr) >> CTX_SHIFT)
103 #define CTX_OFFSET 0x10000
104 #define MAX_CID_CNT 0x4000
106 #define BNX2I_570X_PAGE_SIZE_DEFAULT 4096
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)
113 /* 57710's BAR2 is mapped to doorbell registers */
114 #define BNX2X_DOORBELL_PCI_BAR 2
115 #define BNX2X_MAX_CQS 8
117 #define CNIC_ARM_CQE 1
118 #define CNIC_DISARM_CQE 0
120 #define REG_RD(__hba, offset) \
121 readl(__hba->regview + offset)
122 #define REG_WR(__hba, offset, val) \
123 writel(val, __hba->regview + offset)
127 * struct generic_pdu_resc - login pdu resource structure
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
147 * following structure defines buffer info for generic pdus such as iSCSI Login,
148 * Logout and NOP
150 struct 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;
168 * struct bd_resc_page - tracks DMA'able memory allocated for BD tables
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
175 * structure to track DMA'able memory allocated for command BD tables
177 struct bd_resc_page {
178 struct list_head link;
179 u32 max_ptrs;
180 u32 num_valid;
181 void *page[1];
186 * struct io_bdt - I/O buffer destricptor table
188 * @bd_tbl: BD table's virtual address
189 * @bd_tbl_dma: BD table's dma address
190 * @bd_valid: num valid BD entries
192 * IO BD table
194 struct io_bdt {
195 struct iscsi_bd *bd_tbl;
196 dma_addr_t bd_tbl_dma;
197 u16 bd_valid;
202 * bnx2i_cmd - iscsi command structure
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
209 struct 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;
221 * struct bnx2i_conn - iscsi connection structure
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
232 * iSCSI connection structure
234 struct bnx2i_conn {
235 struct iscsi_cls_conn *cls_conn;
236 struct bnx2i_hba *hba;
237 struct completion cmd_cleanup_cmpl;
239 u32 iscsi_conn_cid;
240 #define BNX2I_CID_RESERVED 0x5AFF
241 u32 fw_cid;
243 struct timer_list poll_timer;
245 * Queue Pair (QP) related structure elements.
247 struct bnx2i_endpoint *ep;
250 * Buffer for login negotiation process
252 struct generic_pdu_resc gen_pdu;
253 u64 violation_notified;
259 * struct iscsi_cid_queue - Per adapter iscsi cid queue
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
269 * Per adapter iSCSI CID Queue
271 struct 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;
282 * struct bnx2i_hba - bnx2i adapter structure
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
301 * @eh_wait: wait queue for the endpoint to shutdown
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
306 * @ep_active_list: connection list for active offload endpoints
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
313 * @hba_shutdown_tmo: Timeout value to shutdown each connection
314 * @conn_teardown_tmo: Timeout value to tear down each connection
315 * @conn_ctx_destroy_tmo: Timeout value to destroy context of each connection
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
335 * Adapter Data Structure
337 struct 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;
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
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 9000
365 struct Scsi_Host *shost;
367 u32 max_sqes;
368 u32 max_rqes;
369 u32 max_cqes;
370 u32 num_ccell;
372 int ofld_conns_active;
373 wait_queue_head_t eh_wait;
375 int max_active_conns;
376 struct iscsi_cid_queue cid_que;
378 rwlock_t ep_rdwr_lock;
379 struct list_head ep_ofld_list;
380 struct list_head ep_active_list;
381 struct list_head ep_destroy_list;
384 * BD table to be used with MP (Middle Path requests.
386 char *mp_bd_tbl;
387 dma_addr_t mp_bd_dma;
388 char *dummy_buffer;
389 dma_addr_t dummy_buf_dma;
391 spinlock_t lock; /* protects hba structure access */
392 struct mutex net_dev_lock;/* sync net device access */
394 int hba_shutdown_tmo;
395 int conn_teardown_tmo;
396 int conn_ctx_destroy_tmo;
398 * PCI related info.
400 u16 pci_did;
401 u16 pci_vid;
402 u16 pci_sdid;
403 u16 pci_svid;
404 u16 pci_func;
405 u16 pci_devno;
408 * Following are a bunch of statistics useful during development
409 * and later stage for score boarding.
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;
422 /*******************************************************************************
423 * QP [ SQ / RQ / CQ ] info.
424 ******************************************************************************/
427 * SQ/RQ/CQ generic structure definition
429 struct sqe {
430 u8 sqe_byte[BNX2I_SQ_WQE_SIZE];
433 struct rqe {
434 u8 rqe_byte[BNX2I_RQ_WQE_SIZE];
437 struct cqe {
438 u8 cqe_byte[BNX2I_CQE_SIZE];
442 enum {
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
458 * CQ DB
460 struct bnx2x_iscsi_cq_pend_cmpl {
461 /* CQ producer, updated by Ustorm */
462 u16 ustrom_prod;
463 /* CQ pending completion counter */
464 u16 pend_cntr;
468 struct 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 */;
478 struct bnx2i_5771x_sq_rq_db {
479 u16 prod_idx;
480 u8 reserved0[14]; /* Pad structure size to 16 bytes */
484 struct 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
500 struct bnx2i_5771x_dbell {
501 struct bnx2i_5771x_dbell_hdr dbell;
502 u8 pad[3];
507 * struct qp_info - QP (share queue region) atrributes structure
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
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
559 struct qp_info {
560 void __iomem *ctx_base;
561 #define DPM_TRIGER_TYPE 0x40
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;
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;
577 void *sq_pgtbl_virt;
578 dma_addr_t sq_pgtbl_phys;
579 u32 sq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */
581 struct cqe *cq_virt;
582 dma_addr_t cq_phys;
583 u32 cq_mem_size;
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;
595 void *cq_pgtbl_virt;
596 dma_addr_t cq_pgtbl_phys;
597 u32 cq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */
599 struct rqe *rq_virt;
600 dma_addr_t rq_phys;
601 u32 rq_mem_size;
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;
611 void *rq_pgtbl_virt;
612 dma_addr_t rq_pgtbl_phys;
613 u32 rq_pgtbl_size; /* set to PAGE_SIZE for 5708 & 5709 */
619 * CID handles
621 struct ep_handles {
622 u32 fw_cid;
623 u32 drv_iscsi_cid;
624 u16 pg_cid;
625 u16 rsvd;
629 enum {
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,
645 EP_STATE_LOGOUT_SENT = 0x4000,
646 EP_STATE_LOGOUT_RESP_RCVD = 0x8000,
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,
653 EP_STATE_OFLD_FAILED_CID_BUSY = 0x80000000,
657 * struct bnx2i_endpoint - representation of tcp connection in NX2 world
659 * @link: list head to link elements
660 * @hba: adapter to which this connection belongs
661 * @conn: iscsi connection this EP is linked to
662 * @cls_ep: associated iSCSI endpoint pointer
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
676 * Endpoint Structure - equivalent of tcp socket structure
678 struct bnx2i_endpoint {
679 struct list_head link;
680 struct bnx2i_hba *hba;
681 struct bnx2i_conn *conn;
682 struct iscsi_endpoint *cls_ep;
683 struct cnic_sock *cm_sk;
684 u32 hba_age;
685 u32 state;
686 unsigned long timestamp;
687 int num_active_cmds;
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;
700 /* Global variables */
701 extern unsigned int error_mask1, error_mask2;
702 extern u64 iscsi_error_mask;
703 extern unsigned int en_tcp_dack;
704 extern unsigned int event_coal_div;
705 extern unsigned int event_coal_min;
707 extern struct scsi_transport_template *bnx2i_scsi_xport_template;
708 extern struct iscsi_transport bnx2i_iscsi_transport;
709 extern struct cnic_ulp_ops bnx2i_cnic_cb;
711 extern unsigned int sq_size;
712 extern unsigned int rq_size;
714 extern struct device_attribute *bnx2i_dev_attributes[];
719 * Function Prototypes
721 extern void bnx2i_identify_device(struct bnx2i_hba *hba);
723 extern void bnx2i_ulp_init(struct cnic_dev *dev);
724 extern void bnx2i_ulp_exit(struct cnic_dev *dev);
725 extern void bnx2i_start(void *handle);
726 extern void bnx2i_stop(void *handle);
727 extern struct bnx2i_hba *get_adapter_list_head(void);
729 struct bnx2i_conn *bnx2i_get_conn_from_id(struct bnx2i_hba *hba,
730 u16 iscsi_cid);
732 int bnx2i_alloc_ep_pool(void);
733 void bnx2i_release_ep_pool(void);
734 struct bnx2i_endpoint *bnx2i_ep_ofld_list_next(struct bnx2i_hba *hba);
735 struct bnx2i_endpoint *bnx2i_ep_destroy_list_next(struct bnx2i_hba *hba);
737 struct bnx2i_hba *bnx2i_find_hba_for_cnic(struct cnic_dev *cnic);
739 struct bnx2i_hba *bnx2i_alloc_hba(struct cnic_dev *cnic);
740 void bnx2i_free_hba(struct bnx2i_hba *hba);
742 void bnx2i_get_rq_buf(struct bnx2i_conn *conn, char *ptr, int len);
743 void bnx2i_put_rq_buf(struct bnx2i_conn *conn, int count);
745 void bnx2i_iscsi_unmap_sg_list(struct bnx2i_cmd *cmd);
747 void bnx2i_drop_session(struct iscsi_cls_session *session);
749 extern int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba);
750 extern int bnx2i_send_iscsi_login(struct bnx2i_conn *conn,
751 struct iscsi_task *mtask);
752 extern int bnx2i_send_iscsi_tmf(struct bnx2i_conn *conn,
753 struct iscsi_task *mtask);
754 extern int bnx2i_send_iscsi_text(struct bnx2i_conn *conn,
755 struct iscsi_task *mtask);
756 extern int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *conn,
757 struct bnx2i_cmd *cmnd);
758 extern int bnx2i_send_iscsi_nopout(struct bnx2i_conn *conn,
759 struct iscsi_task *mtask,
760 char *datap, int data_len, int unsol);
761 extern int bnx2i_send_iscsi_logout(struct bnx2i_conn *conn,
762 struct iscsi_task *mtask);
763 extern void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba,
764 struct bnx2i_cmd *cmd);
765 extern int bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba,
766 struct bnx2i_endpoint *ep);
767 extern void bnx2i_update_iscsi_conn(struct iscsi_conn *conn);
768 extern int bnx2i_send_conn_destroy(struct bnx2i_hba *hba,
769 struct bnx2i_endpoint *ep);
771 extern int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba,
772 struct bnx2i_endpoint *ep);
773 extern void bnx2i_free_qp_resc(struct bnx2i_hba *hba,
774 struct bnx2i_endpoint *ep);
775 extern void bnx2i_ep_ofld_timer(unsigned long data);
776 extern struct bnx2i_endpoint *bnx2i_find_ep_in_ofld_list(
777 struct bnx2i_hba *hba, u32 iscsi_cid);
778 extern struct bnx2i_endpoint *bnx2i_find_ep_in_destroy_list(
779 struct bnx2i_hba *hba, u32 iscsi_cid);
781 extern int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep);
782 extern void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action);
784 extern int bnx2i_hw_ep_disconnect(struct bnx2i_endpoint *bnx2i_ep);
786 /* Debug related function prototypes */
787 extern void bnx2i_print_pend_cmd_queue(struct bnx2i_conn *conn);
788 extern void bnx2i_print_active_cmd_queue(struct bnx2i_conn *conn);
789 extern void bnx2i_print_xmit_pdu_queue(struct bnx2i_conn *conn);
790 extern void bnx2i_print_recv_state(struct bnx2i_conn *conn);
792 #endif