diff options
| author | Jiri Kosina <jkosina@suse.cz> | 2011-09-15 15:08:05 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2011-09-15 15:08:18 +0200 |
| commit | e060c38434b2caa78efe7cedaff4191040b65a15 (patch) | |
| tree | 407361230bf6733f63d8e788e4b5e6566ee04818 /drivers/scsi/bfa/bfa_hw_cb.c | |
| parent | 10e4ac572eeffe5317019bd7330b6058a400dfc2 (diff) | |
| parent | cc39c6a9bbdebfcf1a7dee64d83bf302bc38d941 (diff) | |
| download | blackbird-op-linux-e060c38434b2caa78efe7cedaff4191040b65a15.tar.gz blackbird-op-linux-e060c38434b2caa78efe7cedaff4191040b65a15.zip | |
Merge branch 'master' into for-next
Fast-forward merge with Linus to be able to merge patches
based on more recent version of the tree.
Diffstat (limited to 'drivers/scsi/bfa/bfa_hw_cb.c')
| -rw-r--r-- | drivers/scsi/bfa/bfa_hw_cb.c | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/drivers/scsi/bfa/bfa_hw_cb.c b/drivers/scsi/bfa/bfa_hw_cb.c index e7ffd8205dc7..ea24d4c6e67a 100644 --- a/drivers/scsi/bfa/bfa_hw_cb.c +++ b/drivers/scsi/bfa/bfa_hw_cb.c @@ -42,11 +42,36 @@ bfa_hwcb_reqq_ack_msix(struct bfa_s *bfa, int reqq) bfa->iocfc.bfa_regs.intr_status); } +/* + * Actions to respond RME Interrupt for Crossbow ASIC: + * - Write 1 to Interrupt Status register + * INTX - done in bfa_intx() + * MSIX - done in bfa_hwcb_rspq_ack_msix() + * - Update CI (only if new CI) + */ static void -bfa_hwcb_rspq_ack_msix(struct bfa_s *bfa, int rspq) +bfa_hwcb_rspq_ack_msix(struct bfa_s *bfa, int rspq, u32 ci) { writel(__HFN_INT_RME_Q0 << RME_Q_NUM(bfa_ioc_pcifn(&bfa->ioc), rspq), - bfa->iocfc.bfa_regs.intr_status); + bfa->iocfc.bfa_regs.intr_status); + + if (bfa_rspq_ci(bfa, rspq) == ci) + return; + + bfa_rspq_ci(bfa, rspq) = ci; + writel(ci, bfa->iocfc.bfa_regs.rme_q_ci[rspq]); + mmiowb(); +} + +void +bfa_hwcb_rspq_ack(struct bfa_s *bfa, int rspq, u32 ci) +{ + if (bfa_rspq_ci(bfa, rspq) == ci) + return; + + bfa_rspq_ci(bfa, rspq) = ci; + writel(ci, bfa->iocfc.bfa_regs.rme_q_ci[rspq]); + mmiowb(); } void @@ -149,8 +174,13 @@ bfa_hwcb_msix_uninstall(struct bfa_s *bfa) void bfa_hwcb_isr_mode_set(struct bfa_s *bfa, bfa_boolean_t msix) { - bfa->iocfc.hwif.hw_reqq_ack = bfa_hwcb_reqq_ack_msix; - bfa->iocfc.hwif.hw_rspq_ack = bfa_hwcb_rspq_ack_msix; + if (msix) { + bfa->iocfc.hwif.hw_reqq_ack = bfa_hwcb_reqq_ack_msix; + bfa->iocfc.hwif.hw_rspq_ack = bfa_hwcb_rspq_ack_msix; + } else { + bfa->iocfc.hwif.hw_reqq_ack = NULL; + bfa->iocfc.hwif.hw_rspq_ack = bfa_hwcb_rspq_ack; + } } void |
