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path: root/drivers/infiniband/hw/cxgb4/resource.c
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Diffstat (limited to 'drivers/infiniband/hw/cxgb4/resource.c')
-rw-r--r--drivers/infiniband/hw/cxgb4/resource.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/cxgb4/resource.c b/drivers/infiniband/hw/cxgb4/resource.c
index 83b23dfa250d..4fb50d58b493 100644
--- a/drivers/infiniband/hw/cxgb4/resource.c
+++ b/drivers/infiniband/hw/cxgb4/resource.c
@@ -311,6 +311,9 @@ u32 c4iw_pblpool_alloc(struct c4iw_rdev *rdev, int size)
{
unsigned long addr = gen_pool_alloc(rdev->pbl_pool, size);
PDBG("%s addr 0x%x size %d\n", __func__, (u32)addr, size);
+ if (!addr && printk_ratelimit())
+ printk(KERN_WARNING MOD "%s: Out of PBL memory\n",
+ pci_name(rdev->lldi.pdev));
return (u32)addr;
}
@@ -370,6 +373,9 @@ u32 c4iw_rqtpool_alloc(struct c4iw_rdev *rdev, int size)
{
unsigned long addr = gen_pool_alloc(rdev->rqt_pool, size << 6);
PDBG("%s addr 0x%x size %d\n", __func__, (u32)addr, size << 6);
+ if (!addr && printk_ratelimit())
+ printk(KERN_WARNING MOD "%s: Out of RQT memory\n",
+ pci_name(rdev->lldi.pdev));
return (u32)addr;
}
@@ -416,3 +422,59 @@ void c4iw_rqtpool_destroy(struct c4iw_rdev *rdev)
{
gen_pool_destroy(rdev->rqt_pool);
}
+
+/*
+ * On-Chip QP Memory.
+ */
+#define MIN_OCQP_SHIFT 12 /* 4KB == min ocqp size */
+
+u32 c4iw_ocqp_pool_alloc(struct c4iw_rdev *rdev, int size)
+{
+ unsigned long addr = gen_pool_alloc(rdev->ocqp_pool, size);
+ PDBG("%s addr 0x%x size %d\n", __func__, (u32)addr, size);
+ return (u32)addr;
+}
+
+void c4iw_ocqp_pool_free(struct c4iw_rdev *rdev, u32 addr, int size)
+{
+ PDBG("%s addr 0x%x size %d\n", __func__, addr, size);
+ gen_pool_free(rdev->ocqp_pool, (unsigned long)addr, size);
+}
+
+int c4iw_ocqp_pool_create(struct c4iw_rdev *rdev)
+{
+ unsigned start, chunk, top;
+
+ rdev->ocqp_pool = gen_pool_create(MIN_OCQP_SHIFT, -1);
+ if (!rdev->ocqp_pool)
+ return -ENOMEM;
+
+ start = rdev->lldi.vr->ocq.start;
+ chunk = rdev->lldi.vr->ocq.size;
+ top = start + chunk;
+
+ while (start < top) {
+ chunk = min(top - start + 1, chunk);
+ if (gen_pool_add(rdev->ocqp_pool, start, chunk, -1)) {
+ PDBG("%s failed to add OCQP chunk (%x/%x)\n",
+ __func__, start, chunk);
+ if (chunk <= 1024 << MIN_OCQP_SHIFT) {
+ printk(KERN_WARNING MOD
+ "Failed to add all OCQP chunks (%x/%x)\n",
+ start, top - start);
+ return 0;
+ }
+ chunk >>= 1;
+ } else {
+ PDBG("%s added OCQP chunk (%x/%x)\n",
+ __func__, start, chunk);
+ start += chunk;
+ }
+ }
+ return 0;
+}
+
+void c4iw_ocqp_pool_destroy(struct c4iw_rdev *rdev)
+{
+ gen_pool_destroy(rdev->ocqp_pool);
+}