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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-30 18:36:02 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-30 18:36:02 (GMT) |
| commit | 6c6e3b828b2a13b923b9465fc4316c5bdc92291f (patch) | |
| tree | ca027f7d7645c577ed76fcc8358163eb1689d8ae /drivers/scsi/bfa/bfa_hw_cb.c | |
| parent | c11abbbaa3252875c5740a6880b9a1a6f1e2a870 (diff) | |
| parent | d272281c390eb6c3f1e70ed0337c9e619d99cd9c (diff) | |
| download | linux-fsl-qoriq-6c6e3b828b2a13b923b9465fc4316c5bdc92291f.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (71 commits)
[SCSI] fcoe: cleanup cpu selection for incoming requests
[SCSI] fcoe: add fip retry to avoid missing critical keep alive
[SCSI] libfc: fix warn on in lport retry
[SCSI] libfc: Remove the reference to FCP packet from scsi_cmnd in case of error
[SCSI] libfc: cleanup sending SRR request
[SCSI] libfc: two minor changes in comments
[SCSI] libfc, fcoe: ignore rx frame with wrong xid info
[SCSI] libfc: release exchg cache
[SCSI] libfc: use FC_MAX_ERROR_CNT
[SCSI] fcoe: remove unused ptype field in fcoe_rcv_info
[SCSI] bnx2fc: Update copyright and bump version to 1.0.4
[SCSI] bnx2fc: Tx BDs cache in write tasks
[SCSI] bnx2fc: Do not arm CQ when there are no CQEs
[SCSI] bnx2fc: hold tgt lock when calling cmd_release
[SCSI] bnx2fc: Enable support for sequence level error recovery
[SCSI] bnx2fc: HSI changes for tape
[SCSI] bnx2fc: Handle REC_TOV error code from firmware
[SCSI] bnx2fc: REC/SRR link service request and response handling
[SCSI] bnx2fc: Support 'sequence cleanup' task
[SCSI] dh_rdac: Associate HBA and storage in rdac_controller to support partitions in storage
...
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 e7ffd82..ea24d4c 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 |