diff options
author | Krishna Gudipati <kgudipat@brocade.com> | 2011-06-13 15:52:12 -0700 |
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committer | James Bottomley <JBottomley@Parallels.com> | 2011-06-29 15:46:19 -0500 |
commit | 775c7742adfd7726f05914198bf33eaa3b9f64bb (patch) | |
tree | 87c9373091ca11b5808dc28a2acb7d4a4efe33a2 /drivers/scsi/bfa/bfa_hw_cb.c | |
parent | dd5aaf4536c5111784a18d935b9b5adeac9f914c (diff) | |
download | linux-775c7742adfd7726f05914198bf33eaa3b9f64bb.tar.bz2 |
[SCSI] bfa: IOC and PLL init changes for Brocade-1860 Fabric Adapter.
- Introduced IOC poll mechanism which replaces current interrupt
based FW READY method.
- The timer based poll routine in IOC will query the ioc_fwstate
register to see if there is a state change in FW, and sends the READY event.
- Bug fixes in the new asic PLL initialization.
- Added logic to handle CPE/RME queue interrupts before iocfc config done.
1. Use the queue_process flag to see if iocfc configuration is done
in INTX mode.
2. Split the MSIX handler installation in two - one for IOC intr
handler and the other for cpe/rme queue handler - and delay
assigning queue handlers until iocfc config is done in MSIX mode.
Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/bfa/bfa_hw_cb.c')
-rw-r--r-- | drivers/scsi/bfa/bfa_hw_cb.c | 58 |
1 files changed, 43 insertions, 15 deletions
diff --git a/drivers/scsi/bfa/bfa_hw_cb.c b/drivers/scsi/bfa/bfa_hw_cb.c index 4ef3cf2e7d98..15fbb13df96c 100644 --- a/drivers/scsi/bfa/bfa_hw_cb.c +++ b/drivers/scsi/bfa/bfa_hw_cb.c @@ -86,43 +86,71 @@ bfa_hwcb_msix_getvecs(struct bfa_s *bfa, u32 *msix_vecs_bmap, } /* + * Dummy interrupt handler for handling spurious interrupts. + */ +static void +bfa_hwcb_msix_dummy(struct bfa_s *bfa, int vec) +{ +} + +/* * No special setup required for crossbow -- vector assignments are implicit. */ void bfa_hwcb_msix_init(struct bfa_s *bfa, int nvecs) { - int i; - WARN_ON((nvecs != 1) && (nvecs != __HFN_NUMINTS)); bfa->msix.nvecs = nvecs; - if (nvecs == 1) { - for (i = 0; i < BFI_MSIX_CB_MAX; i++) + bfa_hwcb_msix_uninstall(bfa); +} + +void +bfa_hwcb_msix_ctrl_install(struct bfa_s *bfa) +{ + int i; + + if (bfa->msix.nvecs == 0) + return; + + if (bfa->msix.nvecs == 1) { + for (i = BFI_MSIX_RME_QMAX_CB+1; i < BFI_MSIX_CB_MAX; i++) bfa->msix.handler[i] = bfa_msix_all; return; } - for (i = BFI_MSIX_CPE_QMIN_CB; i <= BFI_MSIX_CPE_QMAX_CB; i++) - bfa->msix.handler[i] = bfa_msix_reqq; - - for (i = BFI_MSIX_RME_QMIN_CB; i <= BFI_MSIX_RME_QMAX_CB; i++) - bfa->msix.handler[i] = bfa_msix_rspq; - - for (; i < BFI_MSIX_CB_MAX; i++) + for (i = BFI_MSIX_RME_QMAX_CB+1; i < BFI_MSIX_CB_MAX; i++) bfa->msix.handler[i] = bfa_msix_lpu_err; } -/* - * Crossbow -- dummy, interrupts are masked - */ void -bfa_hwcb_msix_install(struct bfa_s *bfa) +bfa_hwcb_msix_queue_install(struct bfa_s *bfa) { + int i; + + if (bfa->msix.nvecs == 0) + return; + + if (bfa->msix.nvecs == 1) { + for (i = BFI_MSIX_CPE_QMIN_CB; i <= BFI_MSIX_RME_QMAX_CB; i++) + bfa->msix.handler[i] = bfa_msix_all; + return; + } + + for (i = BFI_MSIX_CPE_QMIN_CB; i <= BFI_MSIX_CPE_QMAX_CB; i++) + bfa->msix.handler[i] = bfa_msix_reqq; + + for (i = BFI_MSIX_RME_QMIN_CB; i <= BFI_MSIX_RME_QMAX_CB; i++) + bfa->msix.handler[i] = bfa_msix_rspq; } void bfa_hwcb_msix_uninstall(struct bfa_s *bfa) { + int i; + + for (i = 0; i < BFI_MSIX_CB_MAX; i++) + bfa->msix.handler[i] = bfa_hwcb_msix_dummy; } /* |