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authorSteve Wise <swise@opengridcomputing.com>2008-07-15 08:48:53 +0200
committerRoland Dreier <rolandd@cisco.com>2008-07-15 08:48:53 +0200
commit96f15c03532282366364ecfd20f04e49b5d96f3a (patch)
treecf3cdbd22a112c43807175045d4e02286b729de0 /drivers/infiniband/hw
parentIB/mthca: Fix check of max_send_sge for special QPs (diff)
downloadlinux-96f15c03532282366364ecfd20f04e49b5d96f3a.tar.xz
linux-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>
Diffstat (limited to 'drivers/infiniband/hw')
-rw-r--r--drivers/infiniband/hw/amso1100/c2_rnic.c2
-rw-r--r--drivers/infiniband/hw/cxgb3/iwch_provider.c6
-rw-r--r--drivers/infiniband/hw/nes/nes_hw.c2
3 files changed, 6 insertions, 4 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))]);