summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/bfa/bfa_intr.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/bfa/bfa_intr.c')
-rw-r--r--drivers/scsi/bfa/bfa_intr.c111
1 files changed, 81 insertions, 30 deletions
diff --git a/drivers/scsi/bfa/bfa_intr.c b/drivers/scsi/bfa/bfa_intr.c
index b36540e4ed76..0eba3f930d5b 100644
--- a/drivers/scsi/bfa/bfa_intr.c
+++ b/drivers/scsi/bfa/bfa_intr.c
@@ -15,7 +15,7 @@
* General Public License for more details.
*/
#include <bfa.h>
-#include <bfi/bfi_cbreg.h>
+#include <bfi/bfi_ctreg.h>
#include <bfa_port_priv.h>
#include <bfa_intr_priv.h>
#include <cs/bfa_debug.h>
@@ -34,6 +34,26 @@ 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)
{
@@ -96,7 +116,8 @@ bfa_isr_enable(struct bfa_s *bfa)
bfa_msix_install(bfa);
intr_unmask = (__HFN_INT_ERR_EMC | __HFN_INT_ERR_LPU0 |
- __HFN_INT_ERR_LPU1 | __HFN_INT_ERR_PSS);
+ __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 |
@@ -127,23 +148,18 @@ bfa_isr_disable(struct bfa_s *bfa)
void
bfa_msix_reqq(struct bfa_s *bfa, int qid)
{
- struct list_head *waitq, *qe, *qen;
- struct bfa_reqq_wait_s *wqe;
+ struct list_head *waitq;
qid &= (BFI_IOC_MAX_CQS - 1);
- 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;
+ bfa->iocfc.hwif.hw_reqq_ack(bfa, qid);
- list_del(qe);
- wqe = (struct bfa_reqq_wait_s *) qe;
- wqe->qresume(wqe->cbarg);
- }
+ /**
+ * Resume any pending requests in the corresponding reqq.
+ */
+ waitq = bfa_reqq(bfa, qid);
+ if (!list_empty(waitq))
+ bfa_reqq_resume(bfa, qid);
}
void
@@ -157,26 +173,27 @@ bfa_isr_unhandled(struct bfa_s *bfa, struct bfi_msg_s *m)
}
void
-bfa_msix_rspq(struct bfa_s *bfa, int rsp_qid)
+bfa_msix_rspq(struct bfa_s *bfa, int qid)
{
- struct bfi_msg_s *m;
- u32 pi, ci;
+ struct bfi_msg_s *m;
+ u32 pi, ci;
+ struct list_head *waitq;
- bfa_trc_fp(bfa, rsp_qid);
+ bfa_trc_fp(bfa, qid);
- rsp_qid &= (BFI_IOC_MAX_CQS - 1);
+ qid &= (BFI_IOC_MAX_CQS - 1);
- bfa->iocfc.hwif.hw_rspq_ack(bfa, rsp_qid);
+ bfa->iocfc.hwif.hw_rspq_ack(bfa, qid);
- ci = bfa_rspq_ci(bfa, rsp_qid);
- pi = bfa_rspq_pi(bfa, rsp_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, rsp_qid, ci);
+ 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);
@@ -188,25 +205,59 @@ bfa_msix_rspq(struct bfa_s *bfa, int rsp_qid)
/**
* update CI
*/
- bfa_rspq_ci(bfa, rsp_qid) = pi;
- bfa_reg_write(bfa->iocfc.bfa_regs.rme_q_ci[rsp_qid], pi);
+ 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;
+ 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);
- if (intr & (__HFN_INT_ERR_EMC |
- __HFN_INT_ERR_LPU0 | __HFN_INT_ERR_LPU1 |
- __HFN_INT_ERR_PSS))
+ 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
OpenPOWER on IntegriCloud