diff options
| author | Steve Wise <swise@opengridcomputing.com> | 2008-07-14 23:48:53 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-07-14 23:48:53 -0700 |
| commit | 96f15c03532282366364ecfd20f04e49b5d96f3a (patch) | |
| tree | cf3cdbd22a112c43807175045d4e02286b729de0 | |
| parent | aed012279d35e88e29fd55737d8821604433f50a (diff) | |
| download | lwn-96f15c03532282366364ecfd20f04e49b5d96f3a.tar.gz lwn-96f15c03532282366364ecfd20f04e49b5d96f3a.zip | |
RDMA/core: Add local DMA L_Key support
- Change the IB_DEVICE_ZERO_STAG flag to the transport-neutral name
IB_DEVICE_LOCAL_DMA_LKEY, which is used by iWARP RNICs to indicate 0
STag support and IB HCAs to indicate reserved L_Key support.
- Add a u32 local_dma_lkey member to struct ib_device. Drivers fill
this in with the appropriate local DMA L_Key (if they support it).
- Fix up the drivers using this flag.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
| -rw-r--r-- | drivers/infiniband/hw/amso1100/c2_rnic.c | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/cxgb3/iwch_provider.c | 6 | ||||
| -rw-r--r-- | drivers/infiniband/hw/nes/nes_hw.c | 2 | ||||
| -rw-r--r-- | include/rdma/ib_verbs.h | 3 |
4 files changed, 8 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/amso1100/c2_rnic.c b/drivers/infiniband/hw/amso1100/c2_rnic.c index b1441aeb60c2..dd05c4835642 100644 --- a/drivers/infiniband/hw/amso1100/c2_rnic.c +++ b/drivers/infiniband/hw/amso1100/c2_rnic.c @@ -454,7 +454,7 @@ int __devinit c2_rnic_init(struct c2_dev *c2dev) (IB_DEVICE_RESIZE_MAX_WR | IB_DEVICE_CURR_QP_STATE_MOD | IB_DEVICE_SYS_IMAGE_GUID | - IB_DEVICE_ZERO_STAG | + IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW); /* Allocate the qptr_array */ diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c index c9a3893b38e8..7ecfd4d638c5 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_provider.c +++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c @@ -1325,8 +1325,10 @@ int iwch_register_device(struct iwch_dev *dev) memset(&dev->ibdev.node_guid, 0, sizeof(dev->ibdev.node_guid)); memcpy(&dev->ibdev.node_guid, dev->rdev.t3cdev_p->lldev->dev_addr, 6); dev->ibdev.owner = THIS_MODULE; - dev->device_cap_flags = IB_DEVICE_ZERO_STAG | - IB_DEVICE_MEM_WINDOW; + dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; + + /* cxgb3 supports STag 0. */ + dev->ibdev.local_dma_lkey = 0; if (fw_supports_fastreg(dev)) dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; diff --git a/drivers/infiniband/hw/nes/nes_hw.c b/drivers/infiniband/hw/nes/nes_hw.c index 902b1375a5d8..85f26d19a32b 100644 --- a/drivers/infiniband/hw/nes/nes_hw.c +++ b/drivers/infiniband/hw/nes/nes_hw.c @@ -398,7 +398,7 @@ struct nes_adapter *nes_init_adapter(struct nes_device *nesdev, u8 hw_rev) { nesadapter->base_pd = 1; nesadapter->device_cap_flags = - IB_DEVICE_ZERO_STAG | IB_DEVICE_MEM_WINDOW; + IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; nesadapter->allocated_qps = (unsigned long *)&(((unsigned char *)nesadapter) [(sizeof(struct nes_adapter)+(sizeof(unsigned long)-1))&(~(sizeof(unsigned long)-1))]); diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 07b41e05565a..90b529f7a154 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -91,7 +91,7 @@ enum ib_device_cap_flags { IB_DEVICE_RC_RNR_NAK_GEN = (1<<12), IB_DEVICE_SRQ_RESIZE = (1<<13), IB_DEVICE_N_NOTIFY_CQ = (1<<14), - IB_DEVICE_ZERO_STAG = (1<<15), + IB_DEVICE_LOCAL_DMA_LKEY = (1<<15), IB_DEVICE_RESERVED = (1<<16), /* old SEND_W_INV */ IB_DEVICE_MEM_WINDOW = (1<<17), /* @@ -1149,6 +1149,7 @@ struct ib_device { char node_desc[64]; __be64 node_guid; + u32 local_dma_lkey; u8 node_type; u8 phys_port_cnt; }; |