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| author | Michael S. Tsirkin <mst@dev.mellanox.co.il> | 2007-05-03 13:48:47 +0300 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2007-05-06 21:18:11 -0700 |
| commit | f4fd0b224d60044d2da5ca02f8f2b5150c1d8731 (patch) | |
| tree | 9bc6c08bde26e6b7d5c51ebd48fc26357d6ae9c5 /drivers/infiniband/hw/ipath | |
| parent | 154257f3626ea6dd96781fac0896c3f27fe2b0a1 (diff) | |
| download | linux-f4fd0b224d60044d2da5ca02f8f2b5150c1d8731.tar.gz linux-f4fd0b224d60044d2da5ca02f8f2b5150c1d8731.tar.bz2 linux-f4fd0b224d60044d2da5ca02f8f2b5150c1d8731.zip | |
IB: Add CQ comp_vector support
Add a num_comp_vectors member to struct ib_device and extend
ib_create_cq() to pass in a comp_vector parameter -- this parallels
the userspace libibverbs API. Update all hardware drivers to set
num_comp_vectors to 1 and have all ULPs pass 0 for the comp_vector
value. Pass the value of num_comp_vectors to userspace rather than
hard-coding a value of 1.
We want multiple CQ event vector support (via MSI-X or similar for
adapters that can generate multiple interrupts), but it's not clear
how many vectors we want, or how we want to deal with policy issues
such as how to decide which vector to use or how to set up interrupt
affinity. This patch is useful for experimenting, since no core
changes will be necessary when updating a driver to support multiple
vectors, and we know that we want to make at least these changes
anyway.
Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_cq.c | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_verbs.c | 1 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_verbs.h | 2 |
3 files changed, 3 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_cq.c b/drivers/infiniband/hw/ipath/ipath_cq.c index 4715f89528cd..00d3eb9bc696 100644 --- a/drivers/infiniband/hw/ipath/ipath_cq.c +++ b/drivers/infiniband/hw/ipath/ipath_cq.c @@ -204,7 +204,7 @@ static void send_complete(unsigned long data) * * Called by ib_create_cq() in the generic verbs code. */ -struct ib_cq *ipath_create_cq(struct ib_device *ibdev, int entries, +struct ib_cq *ipath_create_cq(struct ib_device *ibdev, int entries, int comp_vector, struct ib_ucontext *context, struct ib_udata *udata) { diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c index b676ea81fc41..12933e77c7e9 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.c +++ b/drivers/infiniband/hw/ipath/ipath_verbs.c @@ -1561,6 +1561,7 @@ int ipath_register_ib_device(struct ipath_devdata *dd) (1ull << IB_USER_VERBS_CMD_POST_SRQ_RECV); dev->node_type = RDMA_NODE_IB_CA; dev->phys_port_cnt = 1; + dev->num_comp_vectors = 1; dev->dma_device = &dd->pcidev->dev; dev->query_device = ipath_query_device; dev->modify_device = ipath_modify_device; diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.h b/drivers/infiniband/hw/ipath/ipath_verbs.h index ac66c00a2976..2d734fb6eff7 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.h +++ b/drivers/infiniband/hw/ipath/ipath_verbs.h @@ -735,7 +735,7 @@ int ipath_destroy_srq(struct ib_srq *ibsrq); int ipath_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry); -struct ib_cq *ipath_create_cq(struct ib_device *ibdev, int entries, +struct ib_cq *ipath_create_cq(struct ib_device *ibdev, int entries, int comp_vector, struct ib_ucontext *context, struct ib_udata *udata); |