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6#ifndef _QEDFC_H_
7#define _QEDFC_H_
8
9#include <scsi/libfcoe.h>
10#include <scsi/libfc.h>
11#include <scsi/fc/fc_fip.h>
12#include <scsi/fc/fc_fc2.h>
13#include <scsi/scsi_tcq.h>
14#include <scsi/fc_encode.h>
15#include <linux/version.h>
16
17
18
19#include "qedf_hsi.h"
20
21#include <linux/qed/qed_if.h>
22#include <linux/qed/qed_fcoe_if.h>
23#include <linux/qed/qed_ll2_if.h>
24#include "qedf_version.h"
25#include "qedf_dbg.h"
26#include "drv_fcoe_fw_funcs.h"
27
28
29#define U64_HI(val) ((u32)(((u64)(val)) >> 32))
30#define U64_LO(val) ((u32)(((u64)(val)) & 0xffffffff))
31
32#define QEDF_DESCR "QLogic FCoE Offload Driver"
33#define QEDF_MODULE_NAME "qedf"
34
35#define QEDF_FLOGI_RETRY_CNT 3
36#define QEDF_RPORT_RETRY_CNT 255
37#define QEDF_MAX_SESSIONS 1024
38#define QEDF_MAX_PAYLOAD 2048
39#define QEDF_MAX_BDS_PER_CMD 256
40#define QEDF_MAX_BD_LEN 0xffff
41#define QEDF_BD_SPLIT_SZ 0x1000
42#define QEDF_PAGE_SIZE 4096
43#define QED_HW_DMA_BOUNDARY 0xfff
44#define QEDF_MAX_SGLEN_FOR_CACHESGL ((1U << 16) - 1)
45#define QEDF_MFS (QEDF_MAX_PAYLOAD + \
46 sizeof(struct fc_frame_header))
47#define QEDF_MAX_NPIV 64
48#define QEDF_TM_TIMEOUT 10
49#define QEDF_ABORT_TIMEOUT (10 * 1000)
50#define QEDF_CLEANUP_TIMEOUT 1
51#define QEDF_MAX_CDB_LEN 16
52
53#define UPSTREAM_REMOVE 1
54#define UPSTREAM_KEEP 1
55
56struct qedf_mp_req {
57 uint32_t req_len;
58 void *req_buf;
59 dma_addr_t req_buf_dma;
60 struct scsi_sge *mp_req_bd;
61 dma_addr_t mp_req_bd_dma;
62 struct fc_frame_header req_fc_hdr;
63
64 uint32_t resp_len;
65 void *resp_buf;
66 dma_addr_t resp_buf_dma;
67 struct scsi_sge *mp_resp_bd;
68 dma_addr_t mp_resp_bd_dma;
69 struct fc_frame_header resp_fc_hdr;
70};
71
72struct qedf_els_cb_arg {
73 struct qedf_ioreq *aborted_io_req;
74 struct qedf_ioreq *io_req;
75 u8 op;
76 uint16_t l2_oxid;
77 u32 offset;
78 u8 r_ctl;
79};
80
81enum qedf_ioreq_event {
82 QEDF_IOREQ_EV_NONE,
83 QEDF_IOREQ_EV_ABORT_SUCCESS,
84 QEDF_IOREQ_EV_ABORT_FAILED,
85 QEDF_IOREQ_EV_SEND_RRQ,
86 QEDF_IOREQ_EV_ELS_TMO,
87 QEDF_IOREQ_EV_ELS_ERR_DETECT,
88 QEDF_IOREQ_EV_ELS_FLUSH,
89 QEDF_IOREQ_EV_CLEANUP_SUCCESS,
90 QEDF_IOREQ_EV_CLEANUP_FAILED,
91};
92
93#define FC_GOOD 0
94#define FCOE_FCP_RSP_FLAGS_FCP_RESID_OVER (0x1<<2)
95#define FCOE_FCP_RSP_FLAGS_FCP_RESID_UNDER (0x1<<3)
96#define CMD_SCSI_STATUS(Cmnd) ((Cmnd)->SCp.Status)
97#define FCOE_FCP_RSP_FLAGS_FCP_RSP_LEN_VALID (0x1<<0)
98#define FCOE_FCP_RSP_FLAGS_FCP_SNS_LEN_VALID (0x1<<1)
99struct qedf_ioreq {
100 struct list_head link;
101 uint16_t xid;
102 struct scsi_cmnd *sc_cmd;
103#define QEDF_SCSI_CMD 1
104#define QEDF_TASK_MGMT_CMD 2
105#define QEDF_ABTS 3
106#define QEDF_ELS 4
107#define QEDF_CLEANUP 5
108#define QEDF_SEQ_CLEANUP 6
109 u8 cmd_type;
110#define QEDF_CMD_OUTSTANDING 0x0
111#define QEDF_CMD_IN_ABORT 0x1
112#define QEDF_CMD_IN_CLEANUP 0x2
113#define QEDF_CMD_SRR_SENT 0x3
114#define QEDF_CMD_DIRTY 0x4
115#define QEDF_CMD_ERR_SCSI_DONE 0x5
116 u8 io_req_flags;
117 uint8_t tm_flags;
118 struct qedf_rport *fcport;
119#define QEDF_CMD_ST_INACTIVE 0
120#define QEDFC_CMD_ST_IO_ACTIVE 1
121#define QEDFC_CMD_ST_ABORT_ACTIVE 2
122#define QEDFC_CMD_ST_ABORT_ACTIVE_EH 3
123#define QEDFC_CMD_ST_CLEANUP_ACTIVE 4
124#define QEDFC_CMD_ST_CLEANUP_ACTIVE_EH 5
125#define QEDFC_CMD_ST_RRQ_ACTIVE 6
126#define QEDFC_CMD_ST_RRQ_WAIT 7
127#define QEDFC_CMD_ST_OXID_RETIRE_WAIT 8
128#define QEDFC_CMD_ST_TMF_ACTIVE 9
129#define QEDFC_CMD_ST_DRAIN_ACTIVE 10
130#define QEDFC_CMD_ST_CLEANED 11
131#define QEDFC_CMD_ST_ELS_ACTIVE 12
132 atomic_t state;
133 unsigned long flags;
134 enum qedf_ioreq_event event;
135 size_t data_xfer_len;
136
137
138
139 struct kref refcount;
140 struct qedf_cmd_mgr *cmd_mgr;
141 struct io_bdt *bd_tbl;
142 struct delayed_work timeout_work;
143 struct completion tm_done;
144 struct completion abts_done;
145 struct completion cleanup_done;
146 struct e4_fcoe_task_context *task;
147 struct fcoe_task_params *task_params;
148 struct scsi_sgl_task_params *sgl_task_params;
149 int idx;
150 int lun;
151
152
153
154
155#define QEDF_SCSI_SENSE_BUFFERSIZE (SCSI_SENSE_BUFFERSIZE + 8)
156 uint8_t *sense_buffer;
157 dma_addr_t sense_buffer_dma;
158 u32 fcp_resid;
159 u32 fcp_rsp_len;
160 u32 fcp_sns_len;
161 u8 cdb_status;
162 u8 fcp_status;
163 u8 fcp_rsp_code;
164 u8 scsi_comp_flags;
165#define QEDF_MAX_REUSE 0xfff
166 u16 reuse_count;
167 struct qedf_mp_req mp_req;
168 void (*cb_func)(struct qedf_els_cb_arg *cb_arg);
169 struct qedf_els_cb_arg *cb_arg;
170 int fp_idx;
171 unsigned int cpu;
172 unsigned int int_cpu;
173#define QEDF_IOREQ_UNKNOWN_SGE 1
174#define QEDF_IOREQ_SLOW_SGE 2
175#define QEDF_IOREQ_FAST_SGE 3
176 u8 sge_type;
177 struct delayed_work rrq_work;
178
179
180 uint32_t rx_buf_off;
181 uint32_t tx_buf_off;
182 uint32_t rx_id;
183 uint32_t task_retry_identifier;
184
185
186
187
188
189 bool return_scsi_cmd_on_abts;
190
191 unsigned int alloc;
192};
193
194extern struct workqueue_struct *qedf_io_wq;
195
196struct qedf_rport {
197 spinlock_t rport_lock;
198#define QEDF_RPORT_SESSION_READY 1
199#define QEDF_RPORT_UPLOADING_CONNECTION 2
200#define QEDF_RPORT_IN_RESET 3
201#define QEDF_RPORT_IN_LUN_RESET 4
202#define QEDF_RPORT_IN_TARGET_RESET 5
203 unsigned long flags;
204 int lun_reset_lun;
205 unsigned long retry_delay_timestamp;
206 struct fc_rport *rport;
207 struct fc_rport_priv *rdata;
208 struct qedf_ctx *qedf;
209 u32 handle;
210 u32 fw_cid;
211 void __iomem *p_doorbell;
212
213 atomic_t free_sqes;
214 atomic_t ios_to_queue;
215 atomic_t num_active_ios;
216 struct fcoe_wqe *sq;
217 dma_addr_t sq_dma;
218 u16 sq_prod_idx;
219 u16 fw_sq_prod_idx;
220 u16 sq_con_idx;
221 u32 sq_mem_size;
222 void *sq_pbl;
223 dma_addr_t sq_pbl_dma;
224 u32 sq_pbl_size;
225 u32 sid;
226#define QEDF_RPORT_TYPE_DISK 0
227#define QEDF_RPORT_TYPE_TAPE 1
228 uint dev_type;
229 struct list_head peers;
230};
231
232
233struct qedf_skb_work {
234 struct work_struct work;
235 struct sk_buff *skb;
236 struct qedf_ctx *qedf;
237};
238
239struct qedf_fastpath {
240#define QEDF_SB_ID_NULL 0xffff
241 u16 sb_id;
242 struct qed_sb_info *sb_info;
243 struct qedf_ctx *qedf;
244
245 unsigned long completions;
246 uint32_t cq_num_entries;
247};
248
249
250struct qedf_io_work {
251 struct work_struct work;
252 struct fcoe_cqe cqe;
253 struct qedf_ctx *qedf;
254 struct fc_frame *fp;
255};
256
257struct qedf_glbl_q_params {
258 u64 hw_p_cq;
259 u64 hw_p_rq;
260 u64 hw_p_cmdq;
261};
262
263struct global_queue {
264 struct fcoe_cqe *cq;
265 dma_addr_t cq_dma;
266 u32 cq_mem_size;
267 u32 cq_cons_idx;
268 u32 cq_prod_idx;
269
270 void *cq_pbl;
271 dma_addr_t cq_pbl_dma;
272 u32 cq_pbl_size;
273};
274
275
276#define QEDF_IO_TRACE_SIZE 2048
277struct qedf_io_log {
278#define QEDF_IO_TRACE_REQ 0
279#define QEDF_IO_TRACE_RSP 1
280 uint8_t direction;
281 uint16_t task_id;
282 uint32_t port_id;
283 int lun;
284 unsigned char op;
285 uint8_t lba[4];
286 unsigned int bufflen;
287 unsigned int sg_count;
288 int result;
289 unsigned long jiffies;
290 int refcount;
291 unsigned int req_cpu;
292 unsigned int int_cpu;
293 unsigned int rsp_cpu;
294 u8 sge_type;
295};
296
297
298#define QEDF_BDQ_SIZE 256
299#define QEDF_BDQ_BUF_SIZE 2072
300
301
302struct qedf_bdq_buf {
303 void *buf_addr;
304 dma_addr_t buf_dma;
305};
306
307
308struct qedf_ctx {
309 struct qedf_dbg_ctx dbg_ctx;
310 struct fcoe_ctlr ctlr;
311 struct fc_lport *lport;
312 u8 data_src_addr[ETH_ALEN];
313#define QEDF_LINK_DOWN 0
314#define QEDF_LINK_UP 1
315 atomic_t link_state;
316#define QEDF_DCBX_PENDING 0
317#define QEDF_DCBX_DONE 1
318 atomic_t dcbx;
319#define QEDF_NULL_VLAN_ID -1
320#define QEDF_FALLBACK_VLAN 1002
321#define QEDF_DEFAULT_PRIO 3
322 int vlan_id;
323 u8 prio;
324 struct qed_dev *cdev;
325 struct qed_dev_fcoe_info dev_info;
326 struct qed_int_info int_info;
327 uint16_t last_command;
328 spinlock_t hba_lock;
329 struct pci_dev *pdev;
330 u64 wwnn;
331 u64 wwpn;
332 u8 __aligned(16) mac[ETH_ALEN];
333 struct list_head fcports;
334 atomic_t num_offloads;
335 unsigned int curr_conn_id;
336 struct workqueue_struct *ll2_recv_wq;
337 struct workqueue_struct *link_update_wq;
338 struct delayed_work link_update;
339 struct delayed_work link_recovery;
340 struct completion flogi_compl;
341 struct completion fipvlan_compl;
342
343
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345
346
347
348 atomic_t link_down_tmo_valid;
349#define QEDF_TIMER_INTERVAL (1 * HZ)
350 struct timer_list timer;
351#define QEDF_DRAIN_ACTIVE 1
352#define QEDF_LL2_STARTED 2
353#define QEDF_UNLOADING 3
354#define QEDF_GRCDUMP_CAPTURE 4
355#define QEDF_IN_RECOVERY 5
356#define QEDF_DBG_STOP_IO 6
357 unsigned long flags;
358 int fipvlan_retries;
359 u8 num_queues;
360 struct global_queue **global_queues;
361
362 struct qedf_glbl_q_params *p_cpuq;
363
364 dma_addr_t hw_p_cpuq;
365
366 struct qedf_bdq_buf bdq[QEDF_BDQ_SIZE];
367 void *bdq_pbl;
368 dma_addr_t bdq_pbl_dma;
369 size_t bdq_pbl_mem_size;
370 void *bdq_pbl_list;
371 dma_addr_t bdq_pbl_list_dma;
372 u8 bdq_pbl_list_num_entries;
373 void __iomem *bdq_primary_prod;
374 void __iomem *bdq_secondary_prod;
375 uint16_t bdq_prod_idx;
376
377
378 struct qedf_fastpath *fp_array;
379 struct qed_fcoe_tid tasks;
380 struct qedf_cmd_mgr *cmd_mgr;
381
382 struct qed_pf_params pf_params;
383
384 struct workqueue_struct *timer_work_queue;
385
386#define QEDF_IO_WORK_MIN 64
387 mempool_t *io_mempool;
388 struct workqueue_struct *dpc_wq;
389 struct delayed_work grcdump_work;
390
391 u32 slow_sge_ios;
392 u32 fast_sge_ios;
393
394 uint8_t *grcdump;
395 uint32_t grcdump_size;
396
397 struct qedf_io_log io_trace_buf[QEDF_IO_TRACE_SIZE];
398 spinlock_t io_trace_lock;
399 uint16_t io_trace_idx;
400
401 bool stop_io_on_error;
402
403 u32 flogi_cnt;
404 u32 flogi_failed;
405
406
407 struct mutex stats_mutex;
408 u64 input_requests;
409 u64 output_requests;
410 u64 control_requests;
411 u64 packet_aborts;
412 u64 alloc_failures;
413 u8 lun_resets;
414 u8 target_resets;
415 u8 task_set_fulls;
416 u8 busy;
417
418 struct mutex flush_mutex;
419};
420
421struct io_bdt {
422 struct qedf_ioreq *io_req;
423 struct scsi_sge *bd_tbl;
424 dma_addr_t bd_tbl_dma;
425 u16 bd_valid;
426};
427
428struct qedf_cmd_mgr {
429 struct qedf_ctx *qedf;
430 u16 idx;
431 struct io_bdt **io_bdt_pool;
432#define FCOE_PARAMS_NUM_TASKS 2048
433 struct qedf_ioreq cmds[FCOE_PARAMS_NUM_TASKS];
434 spinlock_t lock;
435 atomic_t free_list_cnt;
436};
437
438
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440
441
442
443
444static inline void *qedf_get_task_mem(struct qed_fcoe_tid *info, u32 tid)
445{
446 return (void *)(info->blocks[tid / info->num_tids_per_block] +
447 (tid % info->num_tids_per_block) * info->size);
448}
449
450static inline void qedf_stop_all_io(struct qedf_ctx *qedf)
451{
452 set_bit(QEDF_DBG_STOP_IO, &qedf->flags);
453}
454
455
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459
460
461
462
463
464#define QEDF_DEFAULT_LOG_MASK 0x3CFB6
465extern const struct qed_fcoe_ops *qed_ops;
466extern uint qedf_dump_frames;
467extern uint qedf_io_tracing;
468extern uint qedf_stop_io_on_error;
469extern uint qedf_link_down_tmo;
470#define QEDF_RETRY_DELAY_MAX 20
471extern bool qedf_retry_delay;
472extern uint qedf_debug;
473
474extern struct qedf_cmd_mgr *qedf_cmd_mgr_alloc(struct qedf_ctx *qedf);
475extern void qedf_cmd_mgr_free(struct qedf_cmd_mgr *cmgr);
476extern int qedf_queuecommand(struct Scsi_Host *host,
477 struct scsi_cmnd *sc_cmd);
478extern void qedf_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb);
479extern u8 *qedf_get_src_mac(struct fc_lport *lport);
480extern void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb);
481extern void qedf_fcoe_send_vlan_req(struct qedf_ctx *qedf);
482extern void qedf_scsi_completion(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
483 struct qedf_ioreq *io_req);
484extern void qedf_process_warning_compl(struct qedf_ctx *qedf,
485 struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
486extern void qedf_process_error_detect(struct qedf_ctx *qedf,
487 struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
488extern void qedf_flush_active_ios(struct qedf_rport *fcport, int lun);
489extern void qedf_release_cmd(struct kref *ref);
490extern int qedf_initiate_abts(struct qedf_ioreq *io_req,
491 bool return_scsi_cmd_on_abts);
492extern void qedf_process_abts_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
493 struct qedf_ioreq *io_req);
494extern struct qedf_ioreq *qedf_alloc_cmd(struct qedf_rport *fcport,
495 u8 cmd_type);
496
497extern struct device_attribute *qedf_host_attrs[];
498extern void qedf_cmd_timer_set(struct qedf_ctx *qedf, struct qedf_ioreq *io_req,
499 unsigned int timer_msec);
500extern int qedf_init_mp_req(struct qedf_ioreq *io_req);
501extern void qedf_init_mp_task(struct qedf_ioreq *io_req,
502 struct e4_fcoe_task_context *task_ctx, struct fcoe_wqe *sqe);
503extern u16 qedf_get_sqe_idx(struct qedf_rport *fcport);
504extern void qedf_ring_doorbell(struct qedf_rport *fcport);
505extern void qedf_process_els_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
506 struct qedf_ioreq *els_req);
507extern int qedf_send_rrq(struct qedf_ioreq *aborted_io_req);
508extern int qedf_send_adisc(struct qedf_rport *fcport, struct fc_frame *fp);
509extern int qedf_initiate_cleanup(struct qedf_ioreq *io_req,
510 bool return_scsi_cmd_on_abts);
511extern void qedf_process_cleanup_compl(struct qedf_ctx *qedf,
512 struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
513extern int qedf_initiate_tmf(struct scsi_cmnd *sc_cmd, u8 tm_flags);
514extern void qedf_process_tmf_compl(struct qedf_ctx *qedf, struct fcoe_cqe *cqe,
515 struct qedf_ioreq *io_req);
516extern void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe);
517extern void qedf_scsi_done(struct qedf_ctx *qedf, struct qedf_ioreq *io_req,
518 int result);
519extern void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id);
520extern void qedf_create_sysfs_ctx_attr(struct qedf_ctx *qedf);
521extern void qedf_remove_sysfs_ctx_attr(struct qedf_ctx *qedf);
522extern void qedf_capture_grc_dump(struct qedf_ctx *qedf);
523bool qedf_wait_for_upload(struct qedf_ctx *qedf);
524extern void qedf_process_unsol_compl(struct qedf_ctx *qedf, uint16_t que_idx,
525 struct fcoe_cqe *cqe);
526extern void qedf_restart_rport(struct qedf_rport *fcport);
527extern int qedf_send_rec(struct qedf_ioreq *orig_io_req);
528extern int qedf_post_io_req(struct qedf_rport *fcport,
529 struct qedf_ioreq *io_req);
530extern void qedf_process_seq_cleanup_compl(struct qedf_ctx *qedf,
531 struct fcoe_cqe *cqe, struct qedf_ioreq *io_req);
532extern int qedf_send_flogi(struct qedf_ctx *qedf);
533extern void qedf_get_protocol_tlv_data(void *dev, void *data);
534extern void qedf_fp_io_handler(struct work_struct *work);
535extern void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data);
536extern void qedf_wq_grcdump(struct work_struct *work);
537void qedf_stag_change_work(struct work_struct *work);
538void qedf_ctx_soft_reset(struct fc_lport *lport);
539
540#define FCOE_WORD_TO_BYTE 4
541#define QEDF_MAX_TASK_NUM 0xFFFF
542
543struct fip_vlan {
544 struct ethhdr eth;
545 struct fip_header fip;
546 struct {
547 struct fip_mac_desc mac;
548 struct fip_wwn_desc wwnn;
549 } desc;
550};
551
552
553#define GBL_RSVD_TASKS 16
554#define NUM_TASKS_PER_CONNECTION 1024
555#define NUM_RW_TASKS_PER_CONNECTION 512
556#define FCOE_PARAMS_CQ_NUM_ENTRIES FCOE_PARAMS_NUM_TASKS
557
558#define FCOE_PARAMS_CMDQ_NUM_ENTRIES FCOE_PARAMS_NUM_TASKS
559#define SQ_NUM_ENTRIES NUM_TASKS_PER_CONNECTION
560
561#define QEDF_FCOE_PARAMS_GL_RQ_PI 0
562#define QEDF_FCOE_PARAMS_GL_CMD_PI 1
563
564#define QEDF_READ (1 << 1)
565#define QEDF_WRITE (1 << 0)
566#define MAX_FIBRE_LUNS 0xffffffff
567
568#define MIN_NUM_CPUS_MSIX(x) min_t(u32, x->dev_info.num_cqs, \
569 num_online_cpus())
570
571
572
573
574
575#define QEDF_MODE_NORMAL 0
576
577#define QEDF_MODE_RECOVERY 1
578
579#define SUPPORTED_25000baseKR_Full (1<<27)
580#define SUPPORTED_50000baseKR2_Full (1<<28)
581#define SUPPORTED_100000baseKR4_Full (1<<29)
582#define SUPPORTED_100000baseCR4_Full (1<<30)
583
584#endif
585
