2 * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
6 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
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
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.
18 #include <bfi/bfi_cbreg.h>
19 #include <bfa_port_priv.h>
20 #include <bfa_intr_priv.h>
21 #include <cs/bfa_debug.h>
23 BFA_TRC_FILE(HAL, INTR);
26 bfa_msix_errint(struct bfa_s *bfa, u32 intr)
28 bfa_ioc_error_isr(&bfa->ioc);
32 bfa_msix_lpu(struct bfa_s *bfa)
34 bfa_ioc_mbox_isr(&bfa->ioc);
38 bfa_msix_all(struct bfa_s *bfa, int vec)
47 bfa_intx(struct bfa_s *bfa)
52 intr = bfa_reg_read(bfa->iocfc.bfa_regs.intr_status);
57 * RME completion queue interrupt
59 qintr = intr & __HFN_INT_RME_MASK;
60 bfa_reg_write(bfa->iocfc.bfa_regs.intr_status, qintr);
62 for (queue = 0; queue < BFI_IOC_MAX_CQS_ASIC; queue ++) {
63 if (intr & (__HFN_INT_RME_Q0 << queue))
64 bfa_msix_rspq(bfa, queue & (BFI_IOC_MAX_CQS - 1));
71 * CPE completion queue interrupt
73 qintr = intr & __HFN_INT_CPE_MASK;
74 bfa_reg_write(bfa->iocfc.bfa_regs.intr_status, qintr);
76 for (queue = 0; queue < BFI_IOC_MAX_CQS_ASIC; queue++) {
77 if (intr & (__HFN_INT_CPE_Q0 << queue))
78 bfa_msix_reqq(bfa, queue & (BFI_IOC_MAX_CQS - 1));
84 bfa_msix_lpu_err(bfa, intr);
90 bfa_isr_enable(struct bfa_s *bfa)
93 int pci_func = bfa_ioc_pcifn(&bfa->ioc);
95 bfa_trc(bfa, pci_func);
97 bfa_msix_install(bfa);
98 intr_unmask = (__HFN_INT_ERR_EMC | __HFN_INT_ERR_LPU0 |
99 __HFN_INT_ERR_LPU1 | __HFN_INT_ERR_PSS);
102 intr_unmask |= (__HFN_INT_CPE_Q0 | __HFN_INT_CPE_Q1 |
103 __HFN_INT_CPE_Q2 | __HFN_INT_CPE_Q3 |
104 __HFN_INT_RME_Q0 | __HFN_INT_RME_Q1 |
105 __HFN_INT_RME_Q2 | __HFN_INT_RME_Q3 |
106 __HFN_INT_MBOX_LPU0);
108 intr_unmask |= (__HFN_INT_CPE_Q4 | __HFN_INT_CPE_Q5 |
109 __HFN_INT_CPE_Q6 | __HFN_INT_CPE_Q7 |
110 __HFN_INT_RME_Q4 | __HFN_INT_RME_Q5 |
111 __HFN_INT_RME_Q6 | __HFN_INT_RME_Q7 |
112 __HFN_INT_MBOX_LPU1);
114 bfa_reg_write(bfa->iocfc.bfa_regs.intr_status, intr_unmask);
115 bfa_reg_write(bfa->iocfc.bfa_regs.intr_mask, ~intr_unmask);
116 bfa_isr_mode_set(bfa, bfa->msix.nvecs != 0);
120 bfa_isr_disable(struct bfa_s *bfa)
122 bfa_isr_mode_set(bfa, BFA_FALSE);
123 bfa_reg_write(bfa->iocfc.bfa_regs.intr_mask, -1L);
124 bfa_msix_uninstall(bfa);
128 bfa_msix_reqq(struct bfa_s *bfa, int qid)
130 struct list_head *waitq, *qe, *qen;
131 struct bfa_reqq_wait_s *wqe;
133 qid &= (BFI_IOC_MAX_CQS - 1);
135 waitq = bfa_reqq(bfa, qid);
136 list_for_each_safe(qe, qen, waitq) {
138 * Callback only as long as there is room in request queue
140 if (bfa_reqq_full(bfa, qid))
144 wqe = (struct bfa_reqq_wait_s *) qe;
145 wqe->qresume(wqe->cbarg);
150 bfa_isr_unhandled(struct bfa_s *bfa, struct bfi_msg_s *m)
152 bfa_trc(bfa, m->mhdr.msg_class);
153 bfa_trc(bfa, m->mhdr.msg_id);
154 bfa_trc(bfa, m->mhdr.mtag.i2htok);
156 bfa_trc_stop(bfa->trcmod);
160 bfa_msix_rspq(struct bfa_s *bfa, int rsp_qid)
165 bfa_trc_fp(bfa, rsp_qid);
167 rsp_qid &= (BFI_IOC_MAX_CQS - 1);
169 bfa->iocfc.hwif.hw_rspq_ack(bfa, rsp_qid);
171 ci = bfa_rspq_ci(bfa, rsp_qid);
172 pi = bfa_rspq_pi(bfa, rsp_qid);
177 if (bfa->rme_process) {
179 m = bfa_rspq_elem(bfa, rsp_qid, ci);
180 bfa_assert_fp(m->mhdr.msg_class < BFI_MC_MAX);
182 bfa_isrs[m->mhdr.msg_class] (bfa, m);
184 CQ_INCR(ci, bfa->iocfc.cfg.drvcfg.num_rspq_elems);
191 bfa_rspq_ci(bfa, rsp_qid) = pi;
192 bfa_reg_write(bfa->iocfc.bfa_regs.rme_q_ci[rsp_qid], pi);
197 bfa_msix_lpu_err(struct bfa_s *bfa, int vec)
201 intr = bfa_reg_read(bfa->iocfc.bfa_regs.intr_status);
203 if (intr & (__HFN_INT_MBOX_LPU0 | __HFN_INT_MBOX_LPU1))
206 if (intr & (__HFN_INT_ERR_EMC |
207 __HFN_INT_ERR_LPU0 | __HFN_INT_ERR_LPU1 |
209 bfa_msix_errint(bfa, intr);
213 bfa_isr_bind(enum bfi_mclass mc, bfa_isr_func_t isr_func)
215 bfa_isrs[mc] = isr_func;