From 97f612509294aadabb8b431782794544df10cd13 Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Wed, 30 Oct 2019 11:44:16 +0200 Subject: RDMA/qedr: Add doorbell overflow recovery support Use the doorbell recovery mechanism to register rdma related doorbells that will be restored in case there is a doorbell overflow attention. Link: https://lore.kernel.org/r/20191030094417.16866-8-michal.kalderon@marvell.com Signed-off-by: Ariel Elior Signed-off-by: Michal Kalderon Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/qedr/qedr.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) (limited to 'drivers/infiniband/hw/qedr/qedr.h') diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h index 6ef39dccba21..639d521ed319 100644 --- a/drivers/infiniband/hw/qedr/qedr.h +++ b/drivers/infiniband/hw/qedr/qedr.h @@ -235,6 +235,7 @@ struct qedr_ucontext { u64 dpi_phys_addr; u32 dpi_size; u16 dpi; + bool db_rec; }; union db_prod64 { @@ -262,6 +263,11 @@ struct qedr_userq { struct qedr_pbl *pbl_tbl; u64 buf_addr; size_t buf_len; + + /* doorbell recovery */ + void __iomem *db_addr; + struct qedr_user_db_rec *db_rec_data; + struct rdma_user_mmap_entry *db_mmap_entry; }; struct qedr_cq { @@ -482,7 +488,10 @@ struct qedr_mr { struct qedr_user_mmap_entry { struct rdma_user_mmap_entry rdma_entry; struct qedr_dev *dev; - u64 io_address; + union { + u64 io_address; + void *address; + }; size_t length; u16 dpi; u8 mmap_flag; -- cgit