drivers/scsi/bfa/bfa.h

   1 /*
   2  * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
   3  * All rights reserved
   4  * www.brocade.com
   5  *
   6  * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License (GPL) Version 2 as
  10  * published by the Free Software Foundation
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  */
  17 #ifndef __BFA_H__
  18 #define __BFA_H__
  19
  20 #include "bfad_drv.h"
  21 #include "bfa_cs.h"
  22 #include "bfa_plog.h"
  23 #include "bfa_defs_svc.h"
  24 #include "bfi.h"
  25 #include "bfa_ioc.h"
  26
  27 struct bfa_s;
  28
  29 typedef void (*bfa_isr_func_t) (struct bfa_s *bfa, struct bfi_msg_s *m);
  30 typedef void    (*bfa_cb_cbfn_t) (void *cbarg, bfa_boolean_t complete);
  31
  32 /*
  33  * Interrupt message handlers
  34  */
  35 void bfa_isr_unhandled(struct bfa_s *bfa, struct bfi_msg_s *m);
  36
  37 /*
  38  * Request and response queue related defines
  39  */
  40 #define BFA_REQQ_NELEMS_MIN     (4)
  41 #define BFA_RSPQ_NELEMS_MIN     (4)
  42
  43 #define bfa_reqq_pi(__bfa, __reqq)      ((__bfa)->iocfc.req_cq_pi[__reqq])
  44 #define bfa_reqq_ci(__bfa, __reqq)                                      \
  45         (*(u32 *)((__bfa)->iocfc.req_cq_shadow_ci[__reqq].kva))
  46
  47 #define bfa_reqq_full(__bfa, __reqq)                            \
  48         (((bfa_reqq_pi(__bfa, __reqq) + 1) &                    \
  49           ((__bfa)->iocfc.cfg.drvcfg.num_reqq_elems - 1)) ==    \
  50          bfa_reqq_ci(__bfa, __reqq))
  51
  52 #define bfa_reqq_next(__bfa, __reqq)                                    \
  53         (bfa_reqq_full(__bfa, __reqq) ? NULL :                          \
  54          ((void *)((struct bfi_msg_s *)((__bfa)->iocfc.req_cq_ba[__reqq].kva) \
  55                    + bfa_reqq_pi((__bfa), (__reqq)))))
  56
  57 #define bfa_reqq_produce(__bfa, __reqq) do {                            \
  58                 (__bfa)->iocfc.req_cq_pi[__reqq]++;                     \
  59                 (__bfa)->iocfc.req_cq_pi[__reqq] &=                     \
  60                         ((__bfa)->iocfc.cfg.drvcfg.num_reqq_elems - 1); \
  61                 writel((__bfa)->iocfc.req_cq_pi[__reqq],                \
  62                         (__bfa)->iocfc.bfa_regs.cpe_q_pi[__reqq]);      \
  63                 mmiowb();      \
  64         } while (0)
  65
  66 #define bfa_rspq_pi(__bfa, __rspq)                                      \
  67         (*(u32 *)((__bfa)->iocfc.rsp_cq_shadow_pi[__rspq].kva))
  68
  69 #define bfa_rspq_ci(__bfa, __rspq)      ((__bfa)->iocfc.rsp_cq_ci[__rspq])
  70 #define bfa_rspq_elem(__bfa, __rspq, __ci)                              \
  71         (&((struct bfi_msg_s *)((__bfa)->iocfc.rsp_cq_ba[__rspq].kva))[__ci])
  72
  73 #define CQ_INCR(__index, __size) do {                   \
  74         (__index)++;                                    \
  75         (__index) &= ((__size) - 1);                    \
  76 } while (0)
  77
  78 /*
  79  * Queue element to wait for room in request queue. FIFO order is
  80  * maintained when fullfilling requests.
  81  */
  82 struct bfa_reqq_wait_s {
  83         struct list_head        qe;
  84         void            (*qresume) (void *cbarg);
  85         void            *cbarg;
  86 };
  87
  88 /*
  89  * Circular queue usage assignments
  90  */
  91 enum {
  92         BFA_REQQ_IOC    = 0,    /*  all low-priority IOC msgs   */
  93         BFA_REQQ_FCXP   = 0,    /*  all FCXP messages           */
  94         BFA_REQQ_LPS    = 0,    /*  all lport service msgs      */
  95         BFA_REQQ_PORT   = 0,    /*  all port messages           */
  96         BFA_REQQ_FLASH  = 0,    /*  for flash module            */
  97         BFA_REQQ_DIAG   = 0,    /*  for diag module             */
  98         BFA_REQQ_RPORT  = 0,    /*  all port messages           */
  99         BFA_REQQ_SBOOT  = 0,    /*  all san boot messages       */
 100         BFA_REQQ_QOS_LO = 1,    /*  all low priority IO */
 101         BFA_REQQ_QOS_MD = 2,    /*  all medium priority IO      */
 102         BFA_REQQ_QOS_HI = 3,    /*  all high priority IO        */
 103 };
 104
 105 static inline void
 106 bfa_reqq_winit(struct bfa_reqq_wait_s *wqe, void (*qresume) (void *cbarg),
 107                void *cbarg)
 108 {
 109         wqe->qresume = qresume;
 110         wqe->cbarg = cbarg;
 111 }
 112
 113 #define bfa_reqq(__bfa, __reqq) (&(__bfa)->reqq_waitq[__reqq])
 114
 115 /*
 116  * static inline void
 117  * bfa_reqq_wait(struct bfa_s *bfa, int reqq, struct bfa_reqq_wait_s *wqe)
 118  */
 119 #define bfa_reqq_wait(__bfa, __reqq, __wqe) do {                        \
 120                                                                         \
 121                 struct list_head *waitq = bfa_reqq(__bfa, __reqq);      \
 122                                                                         \
 123                 WARN_ON(((__reqq) >= BFI_IOC_MAX_CQS));                 \
 124                 WARN_ON(!((__wqe)->qresume && (__wqe)->cbarg));         \
 125                                                                         \
 126                 list_add_tail(&(__wqe)->qe, waitq);      \
 127         } while (0)
 128
 129 #define bfa_reqq_wcancel(__wqe) list_del(&(__wqe)->qe)
 130
 131
 132 /*
 133  * Generic BFA callback element.
 134  */
 135 struct bfa_cb_qe_s {
 136         struct list_head         qe;
 137         bfa_cb_cbfn_t  cbfn;
 138         bfa_boolean_t   once;
 139         u32             rsvd;
 140         void           *cbarg;
 141 };
 142
 143 #define bfa_cb_queue(__bfa, __hcb_qe, __cbfn, __cbarg) do {     \
 144                 (__hcb_qe)->cbfn  = (__cbfn);      \
 145                 (__hcb_qe)->cbarg = (__cbarg);      \
 146                 list_add_tail(&(__hcb_qe)->qe, &(__bfa)->comp_q);      \
 147         } while (0)
 148
 149 #define bfa_cb_dequeue(__hcb_qe)        list_del(&(__hcb_qe)->qe)
 150
 151 #define bfa_cb_queue_once(__bfa, __hcb_qe, __cbfn, __cbarg) do {        \
 152                 (__hcb_qe)->cbfn  = (__cbfn);      \
 153                 (__hcb_qe)->cbarg = (__cbarg);      \
 154                 if (!(__hcb_qe)->once) {      \
 155                         list_add_tail(&(__hcb_qe)->qe, &(__bfa)->comp_q);      \
 156                         (__hcb_qe)->once = BFA_TRUE;                    \
 157                 }                                                       \
 158         } while (0)
 159
 160 #define bfa_cb_queue_done(__hcb_qe) do {        \
 161                 (__hcb_qe)->once = BFA_FALSE;   \
 162         } while (0)
 163
 164
 165 /*
 166  * PCI devices supported by the current BFA
 167  */
 168 struct bfa_pciid_s {
 169         u16     device_id;
 170         u16     vendor_id;
 171 };
 172
 173 extern char     bfa_version[];
 174
 175 /*
 176  * BFA memory resources
 177  */
 178 enum bfa_mem_type {
 179         BFA_MEM_TYPE_KVA = 1,   /*  Kernel Virtual Memory *(non-dma-able) */
 180         BFA_MEM_TYPE_DMA = 2,   /*  DMA-able memory */
 181         BFA_MEM_TYPE_MAX = BFA_MEM_TYPE_DMA,
 182 };
 183
 184 struct bfa_mem_elem_s {
 185         enum bfa_mem_type mem_type;     /* see enum bfa_mem_type */
 186         u32     mem_len;        /*  Total Length in Bytes       */
 187         u8              *kva;           /*  kernel virtual address      */
 188         u64     dma;            /*  dma address if DMA memory   */
 189         u8              *kva_curp;      /*  kva allocation cursor       */
 190         u64     dma_curp;       /*  dma allocation cursor       */
 191 };
 192
 193 struct bfa_meminfo_s {
 194         struct bfa_mem_elem_s meminfo[BFA_MEM_TYPE_MAX];
 195 };
 196 #define bfa_meminfo_kva(_m)                             \
 197         ((_m)->meminfo[BFA_MEM_TYPE_KVA - 1].kva_curp)
 198 #define bfa_meminfo_dma_virt(_m)                        \
 199         ((_m)->meminfo[BFA_MEM_TYPE_DMA - 1].kva_curp)
 200 #define bfa_meminfo_dma_phys(_m)                        \
 201         ((_m)->meminfo[BFA_MEM_TYPE_DMA - 1].dma_curp)
 202
 203 struct bfa_iocfc_regs_s {
 204         void __iomem    *intr_status;
 205         void __iomem    *intr_mask;
 206         void __iomem    *cpe_q_pi[BFI_IOC_MAX_CQS];
 207         void __iomem    *cpe_q_ci[BFI_IOC_MAX_CQS];
 208         void __iomem    *cpe_q_depth[BFI_IOC_MAX_CQS];
 209         void __iomem    *cpe_q_ctrl[BFI_IOC_MAX_CQS];
 210         void __iomem    *rme_q_ci[BFI_IOC_MAX_CQS];
 211         void __iomem    *rme_q_pi[BFI_IOC_MAX_CQS];
 212         void __iomem    *rme_q_depth[BFI_IOC_MAX_CQS];
 213         void __iomem    *rme_q_ctrl[BFI_IOC_MAX_CQS];
 214 };
 215
 216 /*
 217  * MSIX vector handlers
 218  */
 219 #define BFA_MSIX_MAX_VECTORS    22
 220 typedef void (*bfa_msix_handler_t)(struct bfa_s *bfa, int vec);
 221 struct bfa_msix_s {
 222         int     nvecs;
 223         bfa_msix_handler_t handler[BFA_MSIX_MAX_VECTORS];
 224 };
 225
 226 /*
 227  * Chip specific interfaces
 228  */
 229 struct bfa_hwif_s {
 230         void (*hw_reginit)(struct bfa_s *bfa);
 231         void (*hw_reqq_ack)(struct bfa_s *bfa, int reqq);
 232         void (*hw_rspq_ack)(struct bfa_s *bfa, int rspq);
 233         void (*hw_msix_init)(struct bfa_s *bfa, int nvecs);
 234         void (*hw_msix_install)(struct bfa_s *bfa);
 235         void (*hw_msix_uninstall)(struct bfa_s *bfa);
 236         void (*hw_isr_mode_set)(struct bfa_s *bfa, bfa_boolean_t msix);
 237         void (*hw_msix_getvecs)(struct bfa_s *bfa, u32 *vecmap,
 238                                 u32 *nvecs, u32 *maxvec);
 239         void (*hw_msix_get_rme_range) (struct bfa_s *bfa, u32 *start,
 240                                        u32 *end);
 241 };
 242 typedef void (*bfa_cb_iocfc_t) (void *cbarg, enum bfa_status status);
 243
 244 struct bfa_iocfc_s {
 245         struct bfa_s            *bfa;
 246         struct bfa_iocfc_cfg_s  cfg;
 247         int                     action;
 248         u32             req_cq_pi[BFI_IOC_MAX_CQS];
 249         u32             rsp_cq_ci[BFI_IOC_MAX_CQS];
 250         struct bfa_cb_qe_s      init_hcb_qe;
 251         struct bfa_cb_qe_s      stop_hcb_qe;
 252         struct bfa_cb_qe_s      dis_hcb_qe;
 253         struct bfa_cb_qe_s      stats_hcb_qe;
 254         bfa_boolean_t           cfgdone;
 255
 256         struct bfa_dma_s        cfg_info;
 257         struct bfi_iocfc_cfg_s *cfginfo;
 258         struct bfa_dma_s        cfgrsp_dma;
 259         struct bfi_iocfc_cfgrsp_s *cfgrsp;
 260         struct bfi_iocfc_cfg_reply_s *cfg_reply;
 261         struct bfa_dma_s        req_cq_ba[BFI_IOC_MAX_CQS];
 262         struct bfa_dma_s        req_cq_shadow_ci[BFI_IOC_MAX_CQS];
 263         struct bfa_dma_s        rsp_cq_ba[BFI_IOC_MAX_CQS];
 264         struct bfa_dma_s        rsp_cq_shadow_pi[BFI_IOC_MAX_CQS];
 265         struct bfa_iocfc_regs_s bfa_regs;       /*  BFA device registers */
 266         struct bfa_hwif_s       hwif;
 267         bfa_cb_iocfc_t          updateq_cbfn; /*  bios callback function */
 268         void                    *updateq_cbarg; /*  bios callback arg */
 269         u32     intr_mask;
 270 };
 271
 272 #define bfa_lpuid(__bfa)                                                \
 273         bfa_ioc_portid(&(__bfa)->ioc)
 274 #define bfa_msix_init(__bfa, __nvecs)                                   \
 275         ((__bfa)->iocfc.hwif.hw_msix_init(__bfa, __nvecs))
 276 #define bfa_msix_install(__bfa)                                         \
 277         ((__bfa)->iocfc.hwif.hw_msix_install(__bfa))
 278 #define bfa_msix_uninstall(__bfa)                                       \
 279         ((__bfa)->iocfc.hwif.hw_msix_uninstall(__bfa))
 280 #define bfa_isr_mode_set(__bfa, __msix)                                 \
 281         ((__bfa)->iocfc.hwif.hw_isr_mode_set(__bfa, __msix))
 282 #define bfa_msix_getvecs(__bfa, __vecmap, __nvecs, __maxvec)            \
 283         ((__bfa)->iocfc.hwif.hw_msix_getvecs(__bfa, __vecmap,           \
 284                                         __nvecs, __maxvec))
 285 #define bfa_msix_get_rme_range(__bfa, __start, __end)                   \
 286         ((__bfa)->iocfc.hwif.hw_msix_get_rme_range(__bfa, __start, __end))
 287 #define bfa_msix(__bfa, __vec)                                          \
 288         ((__bfa)->msix.handler[__vec](__bfa, __vec))
 289
 290 /*
 291  * FC specific IOC functions.
 292  */
 293 void bfa_iocfc_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
 294                        u32 *dm_len);
 295 void bfa_iocfc_attach(struct bfa_s *bfa, void *bfad,
 296                       struct bfa_iocfc_cfg_s *cfg,
 297                       struct bfa_meminfo_s *meminfo,
 298                       struct bfa_pcidev_s *pcidev);
 299 void bfa_iocfc_init(struct bfa_s *bfa);
 300 void bfa_iocfc_start(struct bfa_s *bfa);
 301 void bfa_iocfc_stop(struct bfa_s *bfa);
 302 void bfa_iocfc_isr(void *bfa, struct bfi_mbmsg_s *msg);
 303 void bfa_iocfc_set_snsbase(struct bfa_s *bfa, u64 snsbase_pa);
 304 bfa_boolean_t bfa_iocfc_is_operational(struct bfa_s *bfa);
 305 void bfa_iocfc_reset_queues(struct bfa_s *bfa);
 306
 307 void bfa_msix_all(struct bfa_s *bfa, int vec);
 308 void bfa_msix_reqq(struct bfa_s *bfa, int vec);
 309 void bfa_msix_rspq(struct bfa_s *bfa, int vec);
 310 void bfa_msix_lpu_err(struct bfa_s *bfa, int vec);
 311
 312 void bfa_hwcb_reginit(struct bfa_s *bfa);
 313 void bfa_hwcb_reqq_ack(struct bfa_s *bfa, int rspq);
 314 void bfa_hwcb_rspq_ack(struct bfa_s *bfa, int rspq);
 315 void bfa_hwcb_msix_init(struct bfa_s *bfa, int nvecs);
 316 void bfa_hwcb_msix_install(struct bfa_s *bfa);
 317 void bfa_hwcb_msix_uninstall(struct bfa_s *bfa);
 318 void bfa_hwcb_isr_mode_set(struct bfa_s *bfa, bfa_boolean_t msix);
 319 void bfa_hwcb_msix_getvecs(struct bfa_s *bfa, u32 *vecmap, u32 *nvecs,
 320                            u32 *maxvec);
 321 void bfa_hwcb_msix_get_rme_range(struct bfa_s *bfa, u32 *start,
 322                                  u32 *end);
 323 void bfa_hwct_reginit(struct bfa_s *bfa);
 324 void bfa_hwct_reqq_ack(struct bfa_s *bfa, int rspq);
 325 void bfa_hwct_rspq_ack(struct bfa_s *bfa, int rspq);
 326 void bfa_hwct_msix_init(struct bfa_s *bfa, int nvecs);
 327 void bfa_hwct_msix_install(struct bfa_s *bfa);
 328 void bfa_hwct_msix_uninstall(struct bfa_s *bfa);
 329 void bfa_hwct_isr_mode_set(struct bfa_s *bfa, bfa_boolean_t msix);
 330 void bfa_hwct_msix_getvecs(struct bfa_s *bfa, u32 *vecmap, u32 *nvecs,
 331                            u32 *maxvec);
 332 void bfa_hwct_msix_get_rme_range(struct bfa_s *bfa, u32 *start,
 333                                  u32 *end);
 334 void bfa_iocfc_get_bootwwns(struct bfa_s *bfa, u8 *nwwns, wwn_t *wwns);
 335 wwn_t bfa_iocfc_get_pwwn(struct bfa_s *bfa);
 336 wwn_t bfa_iocfc_get_nwwn(struct bfa_s *bfa);
 337 int bfa_iocfc_get_pbc_vports(struct bfa_s *bfa,
 338                                 struct bfi_pbc_vport_s *pbc_vport);
 339
 340
 341 /*
 342  *----------------------------------------------------------------------
 343  *              BFA public interfaces
 344  *----------------------------------------------------------------------
 345  */
 346 #define bfa_stats(_mod, _stats) ((_mod)->stats._stats++)
 347 #define bfa_ioc_get_stats(__bfa, __ioc_stats)           \
 348         bfa_ioc_fetch_stats(&(__bfa)->ioc, __ioc_stats)
 349 #define bfa_ioc_clear_stats(__bfa)              \
 350         bfa_ioc_clr_stats(&(__bfa)->ioc)
 351 #define bfa_get_nports(__bfa)                   \
 352         bfa_ioc_get_nports(&(__bfa)->ioc)
 353 #define bfa_get_adapter_manufacturer(__bfa, __manufacturer)             \
 354         bfa_ioc_get_adapter_manufacturer(&(__bfa)->ioc, __manufacturer)
 355 #define bfa_get_adapter_model(__bfa, __model)                   \
 356         bfa_ioc_get_adapter_model(&(__bfa)->ioc, __model)
 357 #define bfa_get_adapter_serial_num(__bfa, __serial_num)                 \
 358         bfa_ioc_get_adapter_serial_num(&(__bfa)->ioc, __serial_num)
 359 #define bfa_get_adapter_fw_ver(__bfa, __fw_ver)                 \
 360         bfa_ioc_get_adapter_fw_ver(&(__bfa)->ioc, __fw_ver)
 361 #define bfa_get_adapter_optrom_ver(__bfa, __optrom_ver)                 \
 362         bfa_ioc_get_adapter_optrom_ver(&(__bfa)->ioc, __optrom_ver)
 363 #define bfa_get_pci_chip_rev(__bfa, __chip_rev)                 \
 364         bfa_ioc_get_pci_chip_rev(&(__bfa)->ioc, __chip_rev)
 365 #define bfa_get_ioc_state(__bfa)                \
 366         bfa_ioc_get_state(&(__bfa)->ioc)
 367 #define bfa_get_type(__bfa)                     \
 368         bfa_ioc_get_type(&(__bfa)->ioc)
 369 #define bfa_get_mac(__bfa)                      \
 370         bfa_ioc_get_mac(&(__bfa)->ioc)
 371 #define bfa_get_mfg_mac(__bfa)                  \
 372         bfa_ioc_get_mfg_mac(&(__bfa)->ioc)
 373 #define bfa_get_fw_clock_res(__bfa)             \
 374         ((__bfa)->iocfc.cfgrsp->fwcfg.fw_tick_res)
 375
 376 void bfa_get_pciids(struct bfa_pciid_s **pciids, int *npciids);
 377 void bfa_cfg_get_default(struct bfa_iocfc_cfg_s *cfg);
 378 void bfa_cfg_get_min(struct bfa_iocfc_cfg_s *cfg);
 379 void bfa_cfg_get_meminfo(struct bfa_iocfc_cfg_s *cfg,
 380                          struct bfa_meminfo_s *meminfo);
 381 void bfa_attach(struct bfa_s *bfa, void *bfad, struct bfa_iocfc_cfg_s *cfg,
 382                 struct bfa_meminfo_s *meminfo,
 383                 struct bfa_pcidev_s *pcidev);
 384 void bfa_detach(struct bfa_s *bfa);
 385 void bfa_cb_init(void *bfad, bfa_status_t status);
 386 void bfa_cb_updateq(void *bfad, bfa_status_t status);
 387
 388 bfa_boolean_t bfa_intx(struct bfa_s *bfa);
 389 void bfa_isr_enable(struct bfa_s *bfa);
 390 void bfa_isr_disable(struct bfa_s *bfa);
 391
 392 void bfa_comp_deq(struct bfa_s *bfa, struct list_head *comp_q);
 393 void bfa_comp_process(struct bfa_s *bfa, struct list_head *comp_q);
 394 void bfa_comp_free(struct bfa_s *bfa, struct list_head *comp_q);
 395
 396 typedef void (*bfa_cb_ioc_t) (void *cbarg, enum bfa_status status);
 397 void bfa_iocfc_get_attr(struct bfa_s *bfa, struct bfa_iocfc_attr_s *attr);
 398
 399
 400 bfa_status_t bfa_iocfc_israttr_set(struct bfa_s *bfa,
 401                                    struct bfa_iocfc_intr_attr_s *attr);
 402
 403 void bfa_iocfc_enable(struct bfa_s *bfa);
 404 void bfa_iocfc_disable(struct bfa_s *bfa);
 405 #define bfa_timer_start(_bfa, _timer, _timercb, _arg, _timeout)         \
 406         bfa_timer_begin(&(_bfa)->timer_mod, _timer, _timercb, _arg, _timeout)
 407
 408 #endif /* __BFA_H__ */