iw_cxgb4: Pass qid range to user space driver

Enhances the t4_dev_status_page to pass the qid start and size
attributes from iw_cxgb4 to libcxgb4.
Bump the ABI Version to 3 -> To allow libcxgb4 to detect old drivers and
revert to the old way of computing the qid ranges.

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index 58fce17..bf15538 100644 (file)
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -850,6 +850,10 @@ static int c4iw_rdev_open(struct c4iw_rdev *rdev)
        }
        rdev->status_page = (struct t4_dev_status_page *)
                            __get_free_page(GFP_KERNEL);
+       rdev->status_page->qp_start = rdev->lldi.vr->qp.start;
+       rdev->status_page->qp_size = rdev->lldi.vr->qp.size;
+       rdev->status_page->cq_start = rdev->lldi.vr->cq.start;
+       rdev->status_page->cq_size = rdev->lldi.vr->cq.size;
        if (!rdev->status_page) {
                pr_err(MOD "error allocating status page\n");
                goto err4;

diff --git a/drivers/infiniband/hw/cxgb4/t4.h b/drivers/infiniband/hw/cxgb4/t4.h
index 1092a2d..6126bbe 100644 (file)
--- a/drivers/infiniband/hw/cxgb4/t4.h
+++ b/drivers/infiniband/hw/cxgb4/t4.h
@@ -699,4 +699,11 @@ static inline void t4_set_cq_in_error(struct t4_cq *cq)
 
 struct t4_dev_status_page {
        u8 db_off;
+       u8 pad1;
+       u16 pad2;
+       u32 pad3;
+       u64 qp_start;
+       u64 qp_size;
+       u64 cq_start;
+       u64 cq_size;
 };

diff --git a/drivers/infiniband/hw/cxgb4/user.h b/drivers/infiniband/hw/cxgb4/user.h
index cbd0ce1..295f422 100644 (file)
--- a/drivers/infiniband/hw/cxgb4/user.h
+++ b/drivers/infiniband/hw/cxgb4/user.h
@@ -32,7 +32,7 @@
 #ifndef __C4IW_USER_H__
 #define __C4IW_USER_H__
 
-#define C4IW_UVERBS_ABI_VERSION        2
+#define C4IW_UVERBS_ABI_VERSION        3
 
 /*
  * Make sure that all structs defined in this file remain laid out so