diff options
Diffstat (limited to 'drivers/scsi/bfa/bfa_intr_priv.h')
| -rw-r--r-- | drivers/scsi/bfa/bfa_intr_priv.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/drivers/scsi/bfa/bfa_intr_priv.h b/drivers/scsi/bfa/bfa_intr_priv.h new file mode 100644 index 000000000000..8ce6e6b105c8 --- /dev/null +++ b/drivers/scsi/bfa/bfa_intr_priv.h @@ -0,0 +1,115 @@ +/* + * Copyright (c) 2005-2009 Brocade Communications Systems, Inc. + * All rights reserved + * www.brocade.com + * + * Linux driver for Brocade Fibre Channel Host Bus Adapter. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License (GPL) Version 2 as + * published by the Free Software Foundation + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +#ifndef __BFA_INTR_PRIV_H__ +#define __BFA_INTR_PRIV_H__ + +/** + * Message handler + */ +typedef void (*bfa_isr_func_t) (struct bfa_s *bfa, struct bfi_msg_s *m); +void bfa_isr_unhandled(struct bfa_s *bfa, struct bfi_msg_s *m); +void bfa_isr_bind(enum bfi_mclass mc, bfa_isr_func_t isr_func); + + +#define bfa_reqq_pi(__bfa, __reqq) (__bfa)->iocfc.req_cq_pi[__reqq] +#define bfa_reqq_ci(__bfa, __reqq) \ + *(u32 *)((__bfa)->iocfc.req_cq_shadow_ci[__reqq].kva) + +#define bfa_reqq_full(__bfa, __reqq) \ + (((bfa_reqq_pi(__bfa, __reqq) + 1) & \ + ((__bfa)->iocfc.cfg.drvcfg.num_reqq_elems - 1)) == \ + bfa_reqq_ci(__bfa, __reqq)) + +#define bfa_reqq_next(__bfa, __reqq) \ + (bfa_reqq_full(__bfa, __reqq) ? NULL : \ + ((void *)((struct bfi_msg_s *)((__bfa)->iocfc.req_cq_ba[__reqq].kva) \ + + bfa_reqq_pi((__bfa), (__reqq))))) + +#define bfa_reqq_produce(__bfa, __reqq) do { \ + (__bfa)->iocfc.req_cq_pi[__reqq]++; \ + (__bfa)->iocfc.req_cq_pi[__reqq] &= \ + ((__bfa)->iocfc.cfg.drvcfg.num_reqq_elems - 1); \ + bfa_reg_write((__bfa)->iocfc.bfa_regs.cpe_q_pi[__reqq], \ + (__bfa)->iocfc.req_cq_pi[__reqq]); \ + bfa_os_mmiowb(); \ +} while (0) + +#define bfa_rspq_pi(__bfa, __rspq) \ + *(u32 *)((__bfa)->iocfc.rsp_cq_shadow_pi[__rspq].kva) + +#define bfa_rspq_ci(__bfa, __rspq) (__bfa)->iocfc.rsp_cq_ci[__rspq] +#define bfa_rspq_elem(__bfa, __rspq, __ci) \ + &((struct bfi_msg_s *)((__bfa)->iocfc.rsp_cq_ba[__rspq].kva))[__ci] + +#define CQ_INCR(__index, __size) \ + (__index)++; (__index) &= ((__size) - 1) + +/** + * Queue element to wait for room in request queue. FIFO order is + * maintained when fullfilling requests. + */ +struct bfa_reqq_wait_s { + struct list_head qe; + void (*qresume) (void *cbarg); + void *cbarg; +}; + +/** + * Circular queue usage assignments + */ +enum { + BFA_REQQ_IOC = 0, /* all low-priority IOC msgs */ + BFA_REQQ_FCXP = 0, /* all FCXP messages */ + BFA_REQQ_LPS = 0, /* all lport service msgs */ + BFA_REQQ_PORT = 0, /* all port messages */ + BFA_REQQ_FLASH = 0, /* for flash module */ + BFA_REQQ_DIAG = 0, /* for diag module */ + BFA_REQQ_RPORT = 0, /* all port messages */ + BFA_REQQ_SBOOT = 0, /* all san boot messages */ + BFA_REQQ_QOS_LO = 1, /* all low priority IO */ + BFA_REQQ_QOS_MD = 2, /* all medium priority IO */ + BFA_REQQ_QOS_HI = 3, /* all high priority IO */ +}; + +static inline void +bfa_reqq_winit(struct bfa_reqq_wait_s *wqe, void (*qresume) (void *cbarg), + void *cbarg) +{ + wqe->qresume = qresume; + wqe->cbarg = cbarg; +} + +#define bfa_reqq(__bfa, __reqq) &(__bfa)->reqq_waitq[__reqq] + +/** + * static inline void + * bfa_reqq_wait(struct bfa_s *bfa, int reqq, struct bfa_reqq_wait_s *wqe) + */ +#define bfa_reqq_wait(__bfa, __reqq, __wqe) do { \ + \ + struct list_head *waitq = bfa_reqq(__bfa, __reqq); \ + \ + bfa_assert(((__reqq) < BFI_IOC_MAX_CQS)); \ + bfa_assert((__wqe)->qresume && (__wqe)->cbarg); \ + \ + list_add_tail(&(__wqe)->qe, waitq); \ +} while (0) + +#define bfa_reqq_wcancel(__wqe) list_del(&(__wqe)->qe) + +#endif /* __BFA_INTR_PRIV_H__ */ |