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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 | */ | |
149 | struct 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 | */ | |
176 | struct 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 | */ | |
193 | struct 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 | */ | |
208 | struct 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 | */ | |
233 | struct 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 | */ | |
270 | struct 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 | */ | |
336 | struct 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 | */ | |
428 | struct sqe { | |
429 | u8 sqe_byte[BNX2I_SQ_WQE_SIZE]; | |
430 | }; | |
431 | ||
432 | struct rqe { | |
433 | u8 rqe_byte[BNX2I_RQ_WQE_SIZE]; | |
434 | }; | |
435 | ||
436 | struct cqe { | |
437 | u8 cqe_byte[BNX2I_CQE_SIZE]; | |
438 | }; | |
439 | ||
440 | ||
441 | enum { | |
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 | */ | |
459 | struct 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 | ||
467 | struct 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 | ||
477 | struct bnx2i_5771x_sq_rq_db { | |
478 | u16 prod_idx; | |
479 | u8 reserved0[14]; /* Pad structure size to 16 bytes */ | |
480 | }; | |
481 | ||
482 | ||
483 | struct 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 | ||
499 | struct 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 | */ | |
558 | struct 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 | */ | |
620 | struct ep_handles { | |
621 | u32 fw_cid; | |
622 | u32 drv_iscsi_cid; | |
623 | u16 pg_cid; | |
624 | u16 rsvd; | |
625 | }; | |
626 | ||
627 | ||
628 | enum { | |
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, | |
2eefb20d EW |
644 | EP_STATE_LOGOUT_SENT = 0x4000, |
645 | EP_STATE_LOGOUT_RESP_RCVD = 0x8000, | |
cf4e6363 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 |
cf4e6363 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 | */ | |
676 | struct bnx2i_endpoint { | |
677 | struct list_head link; | |
678 | struct bnx2i_hba *hba; | |
679 | struct bnx2i_conn *conn; | |
46012e8b | 680 | struct iscsi_endpoint *cls_ep; |
cf4e6363 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 */ | |
699 | extern unsigned int error_mask1, error_mask2; | |
700 | extern u64 iscsi_error_mask; | |
701 | extern unsigned int en_tcp_dack; | |
702 | extern unsigned int event_coal_div; | |
8776193b | 703 | extern unsigned int event_coal_min; |
cf4e6363 MC |
704 | |
705 | extern struct scsi_transport_template *bnx2i_scsi_xport_template; | |
706 | extern struct iscsi_transport bnx2i_iscsi_transport; | |
707 | extern struct cnic_ulp_ops bnx2i_cnic_cb; | |
708 | ||
709 | extern unsigned int sq_size; | |
710 | extern unsigned int rq_size; | |
711 | ||
712 | extern struct device_attribute *bnx2i_dev_attributes[]; | |
713 | ||
714 | ||
715 | ||
716 | /* | |
717 | * Function Prototypes | |
718 | */ | |
719 | extern void bnx2i_identify_device(struct bnx2i_hba *hba); | |
cf4e6363 MC |
720 | |
721 | extern void bnx2i_ulp_init(struct cnic_dev *dev); | |
722 | extern void bnx2i_ulp_exit(struct cnic_dev *dev); | |
723 | extern void bnx2i_start(void *handle); | |
724 | extern void bnx2i_stop(void *handle); | |
cf4e6363 MC |
725 | extern struct bnx2i_hba *get_adapter_list_head(void); |
726 | ||
727 | struct bnx2i_conn *bnx2i_get_conn_from_id(struct bnx2i_hba *hba, | |
728 | u16 iscsi_cid); | |
729 | ||
730 | int bnx2i_alloc_ep_pool(void); | |
731 | void bnx2i_release_ep_pool(void); | |
732 | struct bnx2i_endpoint *bnx2i_ep_ofld_list_next(struct bnx2i_hba *hba); | |
733 | struct bnx2i_endpoint *bnx2i_ep_destroy_list_next(struct bnx2i_hba *hba); | |
734 | ||
735 | struct bnx2i_hba *bnx2i_find_hba_for_cnic(struct cnic_dev *cnic); | |
736 | ||
737 | struct bnx2i_hba *bnx2i_alloc_hba(struct cnic_dev *cnic); | |
738 | void bnx2i_free_hba(struct bnx2i_hba *hba); | |
739 | ||
740 | void bnx2i_get_rq_buf(struct bnx2i_conn *conn, char *ptr, int len); | |
741 | void bnx2i_put_rq_buf(struct bnx2i_conn *conn, int count); | |
742 | ||
743 | void bnx2i_iscsi_unmap_sg_list(struct bnx2i_cmd *cmd); | |
744 | ||
745 | void bnx2i_drop_session(struct iscsi_cls_session *session); | |
746 | ||
747 | extern int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba); | |
748 | extern int bnx2i_send_iscsi_login(struct bnx2i_conn *conn, | |
749 | struct iscsi_task *mtask); | |
750 | extern int bnx2i_send_iscsi_tmf(struct bnx2i_conn *conn, | |
751 | struct iscsi_task *mtask); | |
752 | extern int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *conn, | |
753 | struct bnx2i_cmd *cmnd); | |
754 | extern int bnx2i_send_iscsi_nopout(struct bnx2i_conn *conn, | |
39304072 | 755 | struct iscsi_task *mtask, |
cf4e6363 MC |
756 | char *datap, int data_len, int unsol); |
757 | extern int bnx2i_send_iscsi_logout(struct bnx2i_conn *conn, | |
758 | struct iscsi_task *mtask); | |
759 | extern void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, | |
760 | struct bnx2i_cmd *cmd); | |
761 | extern void bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, | |
762 | struct bnx2i_endpoint *ep); | |
763 | extern void bnx2i_update_iscsi_conn(struct iscsi_conn *conn); | |
764 | extern void bnx2i_send_conn_destroy(struct bnx2i_hba *hba, | |
765 | struct bnx2i_endpoint *ep); | |
766 | ||
767 | extern int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, | |
768 | struct bnx2i_endpoint *ep); | |
769 | extern void bnx2i_free_qp_resc(struct bnx2i_hba *hba, | |
770 | struct bnx2i_endpoint *ep); | |
771 | extern void bnx2i_ep_ofld_timer(unsigned long data); | |
772 | extern struct bnx2i_endpoint *bnx2i_find_ep_in_ofld_list( | |
773 | struct bnx2i_hba *hba, u32 iscsi_cid); | |
774 | extern struct bnx2i_endpoint *bnx2i_find_ep_in_destroy_list( | |
775 | struct bnx2i_hba *hba, u32 iscsi_cid); | |
776 | ||
777 | extern int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep); | |
778 | extern void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action); | |
779 | ||
55e15c97 EW |
780 | extern int bnx2i_hw_ep_disconnect(struct bnx2i_endpoint *bnx2i_ep); |
781 | ||
cf4e6363 MC |
782 | /* Debug related function prototypes */ |
783 | extern void bnx2i_print_pend_cmd_queue(struct bnx2i_conn *conn); | |
784 | extern void bnx2i_print_active_cmd_queue(struct bnx2i_conn *conn); | |
785 | extern void bnx2i_print_xmit_pdu_queue(struct bnx2i_conn *conn); | |
786 | extern void bnx2i_print_recv_state(struct bnx2i_conn *conn); | |
787 | ||
788 | #endif |