diff options
| author | Chien Tung <chien.tin.tung@intel.com> | 2010-03-03 19:13:28 +0000 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2010-03-11 15:12:15 -0800 |
| commit | 9f29006ae8c85746e5a52d557f689359149a0793 (patch) | |
| tree | 838686f9d7ee2f124b17f6f00c22b1406e14f91c | |
| parent | 883c699241f48667ff59277d8c20790868fd4829 (diff) | |
RDMA/nes: Clear stall bit before destroying NIC QP
Clear the stall bit to drop any incoming packets while destroying NIC
QP. This will prevent a chip resource leak.
Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
| -rw-r--r-- | drivers/infiniband/hw/nes/nes_hw.c | 8 | ||||
| -rw-r--r-- | drivers/infiniband/hw/nes/nes_hw.h | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/nes/nes_hw.c b/drivers/infiniband/hw/nes/nes_hw.c index ce7f53833577..925075557dc2 100644 --- a/drivers/infiniband/hw/nes/nes_hw.c +++ b/drivers/infiniband/hw/nes/nes_hw.c @@ -1899,9 +1899,14 @@ void nes_destroy_nic_qp(struct nes_vnic *nesvnic) u16 wqe_fragment_index; u64 wqe_frag; u32 cqp_head; + u32 wqm_cfg0; unsigned long flags; int ret; + /* clear wqe stall before destroying NIC QP */ + wqm_cfg0 = nes_read_indexed(nesdev, NES_IDX_WQM_CONFIG0); + nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG0, wqm_cfg0 & 0xFFFF7FFF); + /* Free remaining NIC receive buffers */ while (nesvnic->nic.rq_head != nesvnic->nic.rq_tail) { nic_rqe = &nesvnic->nic.rq_vbase[nesvnic->nic.rq_tail]; @@ -2020,6 +2025,9 @@ void nes_destroy_nic_qp(struct nes_vnic *nesvnic) pci_free_consistent(nesdev->pcidev, nesvnic->nic_mem_size, nesvnic->nic_vbase, nesvnic->nic_pbase); + + /* restore old wqm_cfg0 value */ + nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG0, wqm_cfg0); } /** diff --git a/drivers/infiniband/hw/nes/nes_hw.h b/drivers/infiniband/hw/nes/nes_hw.h index 9b1e7f869d83..bbbfe9fc5a5a 100644 --- a/drivers/infiniband/hw/nes/nes_hw.h +++ b/drivers/infiniband/hw/nes/nes_hw.h @@ -160,6 +160,7 @@ enum indexed_regs { NES_IDX_ENDNODE0_NSTAT_TX_OCTETS_HI = 0x7004, NES_IDX_ENDNODE0_NSTAT_TX_FRAMES_LO = 0x7008, NES_IDX_ENDNODE0_NSTAT_TX_FRAMES_HI = 0x700c, + NES_IDX_WQM_CONFIG0 = 0x5000, NES_IDX_WQM_CONFIG1 = 0x5004, NES_IDX_CM_CONFIG = 0x5100, NES_IDX_NIC_LOGPORT_TO_PHYPORT = 0x6000, |