/* * QLogic Fibre Channel HBA Driver * Copyright (c) 2003-2011 QLogic Corporation * * See LICENSE.qla2xxx for copyright and licensing details. */ /* * qla2x00_debounce_register * Debounce register. * * Input: * port = register address. * * Returns: * register value. */ static __inline__ uint16_t qla2x00_debounce_register(volatile uint16_t __iomem *addr) { volatile uint16_t first; volatile uint16_t second; do { first = RD_REG_WORD(addr); barrier(); cpu_relax(); second = RD_REG_WORD(addr); } while (first != second); return (first); } static inline void qla2x00_poll(struct rsp_que *rsp) { unsigned long flags; struct qla_hw_data *ha = rsp->hw; local_irq_save(flags); if (IS_QLA82XX(ha)) qla82xx_poll(0, rsp); else ha->isp_ops->intr_handler(0, rsp); local_irq_restore(flags); } static inline uint8_t * host_to_fcp_swap(uint8_t *fcp, uint32_t bsize) { uint32_t *ifcp = (uint32_t *) fcp; uint32_t *ofcp = (uint32_t *) fcp; uint32_t iter = bsize >> 2; for (; iter ; iter--) *ofcp++ = swab32(*ifcp++); return fcp; } static inline int qla2x00_is_reserved_id(scsi_qla_host_t *vha, uint16_t loop_id) { struct qla_hw_data *ha = vha->hw; if (IS_FWI2_CAPABLE(ha)) return (loop_id > NPH_LAST_HANDLE); return ((loop_id > ha->max_loop_id && loop_id < SNS_FIRST_LOOP_ID) || loop_id == MANAGEMENT_SERVER || loop_id == BROADCAST); } static inline void qla2x00_clean_dsd_pool(struct qla_hw_data *ha, srb_t *sp) { struct dsd_dma *dsd_ptr, *tdsd_ptr; /* clean up allocated prev pool */ list_for_each_entry_safe(dsd_ptr, tdsd_ptr, &((struct crc_context *)sp->ctx)->dsd_list, list) { dma_pool_free(ha->dl_dma_pool, dsd_ptr->dsd_addr, dsd_ptr->dsd_list_dma); list_del(&dsd_ptr->list); kfree(dsd_ptr); } INIT_LIST_HEAD(&((struct crc_context *)sp->ctx)->dsd_list); } static inline void qla2x00_set_fcport_state(fc_port_t *fcport, int state) { int old_state; old_state = atomic_read(&fcport->state); atomic_set(&fcport->state, state); /* Don't print state transitions during initial allocation of fcport */ if (old_state && old_state != state) { ql_dbg(ql_dbg_disc, fcport->vha, 0x207d, "FCPort state transitioned from %s to %s - " "portid=%02x%02x%02x.\n", port_state_str[old_state], port_state_str[state], fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa); } } static inline int qla2x00_hba_err_chk_enabled(srb_t *sp) { /* * Uncomment when corresponding SCSI changes are done. * if (!sp->cmd->prot_chk) return 0; * */ switch (scsi_get_prot_op(sp->cmd)) { case SCSI_PROT_READ_STRIP: case SCSI_PROT_WRITE_INSERT: if (ql2xenablehba_err_chk >= 1) return 1; break; case SCSI_PROT_READ_PASS: case SCSI_PROT_WRITE_PASS: if (ql2xenablehba_err_chk >= 2) return 1; break; case SCSI_PROT_READ_INSERT: case SCSI_PROT_WRITE_STRIP: return 1; } return 0; }