+++ /dev/null
-/*
- * 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.
- */
-#include <bfa.h>
-#include <bfi/bfi_ctreg.h>
-#include <bfa_port_priv.h>
-#include <bfa_intr_priv.h>
-#include <cs/bfa_debug.h>
-
-BFA_TRC_FILE(HAL, INTR);
-
-static void
-bfa_msix_errint(struct bfa_s *bfa, u32 intr)
-{
- bfa_ioc_error_isr(&bfa->ioc);
-}
-
-static void
-bfa_msix_lpu(struct bfa_s *bfa)
-{
- bfa_ioc_mbox_isr(&bfa->ioc);
-}
-
-static void
-bfa_reqq_resume(struct bfa_s *bfa, int qid)
-{
- struct list_head *waitq, *qe, *qen;
- struct bfa_reqq_wait_s *wqe;
-
- waitq = bfa_reqq(bfa, qid);
- list_for_each_safe(qe, qen, waitq) {
- /**
- * Callback only as long as there is room in request queue
- */
- if (bfa_reqq_full(bfa, qid))
- break;
-
- list_del(qe);
- wqe = (struct bfa_reqq_wait_s *) qe;
- wqe->qresume(wqe->cbarg);
- }
-}
-
-void
-bfa_msix_all(struct bfa_s *bfa, int vec)
-{
- bfa_intx(bfa);
-}
-
-/**
- * hal_intr_api
- */
-bfa_boolean_t
-bfa_intx(struct bfa_s *bfa)
-{
- u32 intr, qintr;
- int queue;
-
- intr = bfa_reg_read(bfa->iocfc.bfa_regs.intr_status);
- if (!intr)
- return BFA_FALSE;
-
- /**
- * RME completion queue interrupt
- */
- qintr = intr & __HFN_INT_RME_MASK;
- bfa_reg_write(bfa->iocfc.bfa_regs.intr_status, qintr);
-
- for (queue = 0; queue < BFI_IOC_MAX_CQS_ASIC; queue++) {
- if (intr & (__HFN_INT_RME_Q0 << queue))
- bfa_msix_rspq(bfa, queue & (BFI_IOC_MAX_CQS - 1));
- }
- intr &= ~qintr;
- if (!intr)
- return BFA_TRUE;
-
- /**
- * CPE completion queue interrupt
- */
- qintr = intr & __HFN_INT_CPE_MASK;
- bfa_reg_write(bfa->iocfc.bfa_regs.intr_status, qintr);
-
- for (queue = 0; queue < BFI_IOC_MAX_CQS_ASIC; queue++) {
- if (intr & (__HFN_INT_CPE_Q0 << queue))
- bfa_msix_reqq(bfa, queue & (BFI_IOC_MAX_CQS - 1));
- }
- intr &= ~qintr;
- if (!intr)
- return BFA_TRUE;
-
- bfa_msix_lpu_err(bfa, intr);
-
- return BFA_TRUE;
-}
-
-void
-bfa_isr_enable(struct bfa_s *bfa)
-{
- u32 intr_unmask;
- int pci_func = bfa_ioc_pcifn(&bfa->ioc);
-
- bfa_trc(bfa, pci_func);
-
- bfa_msix_install(bfa);
- intr_unmask = (__HFN_INT_ERR_EMC | __HFN_INT_ERR_LPU0 |
- __HFN_INT_ERR_LPU1 | __HFN_INT_ERR_PSS |
- __HFN_INT_LL_HALT);
-
- if (pci_func == 0)
- intr_unmask |= (__HFN_INT_CPE_Q0 | __HFN_INT_CPE_Q1 |
- __HFN_INT_CPE_Q2 | __HFN_INT_CPE_Q3 |
- __HFN_INT_RME_Q0 | __HFN_INT_RME_Q1 |
- __HFN_INT_RME_Q2 | __HFN_INT_RME_Q3 |
- __HFN_INT_MBOX_LPU0);
- else
- intr_unmask |= (__HFN_INT_CPE_Q4 | __HFN_INT_CPE_Q5 |
- __HFN_INT_CPE_Q6 | __HFN_INT_CPE_Q7 |
- __HFN_INT_RME_Q4 | __HFN_INT_RME_Q5 |
- __HFN_INT_RME_Q6 | __HFN_INT_RME_Q7 |
- __HFN_INT_MBOX_LPU1);
-
- bfa_reg_write(bfa->iocfc.bfa_regs.intr_status, intr_unmask);
- bfa_reg_write(bfa->iocfc.bfa_regs.intr_mask, ~intr_unmask);
- bfa->iocfc.intr_mask = ~intr_unmask;
- bfa_isr_mode_set(bfa, bfa->msix.nvecs != 0);
-}
-
-void
-bfa_isr_disable(struct bfa_s *bfa)
-{
- bfa_isr_mode_set(bfa, BFA_FALSE);
- bfa_reg_write(bfa->iocfc.bfa_regs.intr_mask, -1L);
- bfa_msix_uninstall(bfa);
-}
-
-void
-bfa_msix_reqq(struct bfa_s *bfa, int qid)
-{
- struct list_head *waitq;
-
- qid &= (BFI_IOC_MAX_CQS - 1);
-
- bfa->iocfc.hwif.hw_reqq_ack(bfa, qid);
-
- /**
- * Resume any pending requests in the corresponding reqq.
- */
- waitq = bfa_reqq(bfa, qid);
- if (!list_empty(waitq))
- bfa_reqq_resume(bfa, qid);
-}
-
-void
-bfa_isr_unhandled(struct bfa_s *bfa, struct bfi_msg_s *m)
-{
- bfa_trc(bfa, m->mhdr.msg_class);
- bfa_trc(bfa, m->mhdr.msg_id);
- bfa_trc(bfa, m->mhdr.mtag.i2htok);
- bfa_assert(0);
- bfa_trc_stop(bfa->trcmod);
-}
-
-void
-bfa_msix_rspq(struct bfa_s *bfa, int qid)
-{
- struct bfi_msg_s *m;
- u32 pi, ci;
- struct list_head *waitq;
-
- bfa_trc_fp(bfa, qid);
-
- qid &= (BFI_IOC_MAX_CQS - 1);
-
- bfa->iocfc.hwif.hw_rspq_ack(bfa, qid);
-
- ci = bfa_rspq_ci(bfa, qid);
- pi = bfa_rspq_pi(bfa, qid);
-
- bfa_trc_fp(bfa, ci);
- bfa_trc_fp(bfa, pi);
-
- if (bfa->rme_process) {
- while (ci != pi) {
- m = bfa_rspq_elem(bfa, qid, ci);
- bfa_assert_fp(m->mhdr.msg_class < BFI_MC_MAX);
-
- bfa_isrs[m->mhdr.msg_class] (bfa, m);
-
- CQ_INCR(ci, bfa->iocfc.cfg.drvcfg.num_rspq_elems);
- }
- }
-
- /**
- * update CI
- */
- bfa_rspq_ci(bfa, qid) = pi;
- bfa_reg_write(bfa->iocfc.bfa_regs.rme_q_ci[qid], pi);
- bfa_os_mmiowb();
-
- /**
- * Resume any pending requests in the corresponding reqq.
- */
- waitq = bfa_reqq(bfa, qid);
- if (!list_empty(waitq))
- bfa_reqq_resume(bfa, qid);
-}
-
-void
-bfa_msix_lpu_err(struct bfa_s *bfa, int vec)
-{
- u32 intr, curr_value;
-
- intr = bfa_reg_read(bfa->iocfc.bfa_regs.intr_status);
-
- if (intr & (__HFN_INT_MBOX_LPU0 | __HFN_INT_MBOX_LPU1))
- bfa_msix_lpu(bfa);
-
- intr &= (__HFN_INT_ERR_EMC | __HFN_INT_ERR_LPU0 |
- __HFN_INT_ERR_LPU1 | __HFN_INT_ERR_PSS | __HFN_INT_LL_HALT);
-
- if (intr) {
- if (intr & __HFN_INT_LL_HALT) {
- /**
- * If LL_HALT bit is set then FW Init Halt LL Port
- * Register needs to be cleared as well so Interrupt
- * Status Register will be cleared.
- */
- curr_value = bfa_reg_read(bfa->ioc.ioc_regs.ll_halt);
- curr_value &= ~__FW_INIT_HALT_P;
- bfa_reg_write(bfa->ioc.ioc_regs.ll_halt, curr_value);
- }
-
- if (intr & __HFN_INT_ERR_PSS) {
- /**
- * ERR_PSS bit needs to be cleared as well in case
- * interrups are shared so driver's interrupt handler is
- * still called eventhough it is already masked out.
- */
- curr_value = bfa_reg_read(
- bfa->ioc.ioc_regs.pss_err_status_reg);
- curr_value &= __PSS_ERR_STATUS_SET;
- bfa_reg_write(bfa->ioc.ioc_regs.pss_err_status_reg,
- curr_value);
- }
-
- bfa_reg_write(bfa->iocfc.bfa_regs.intr_status, intr);
- bfa_msix_errint(bfa, intr);
- }
-}
-
-void
-bfa_isr_bind(enum bfi_mclass mc, bfa_isr_func_t isr_func)
-{
- bfa_isrs[mc] = isr_func;
-}
-
-
projects / mv-sheeva.git / blobdiff