From: Cheng Xu Date: Mon, 7 Nov 2022 02:18:44 +0000 (+0800) Subject: RDMA/erdma: Report atomic capacity when hardware supports atomic feature X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=71c6925f280ae8cb52eafee2404ae75c176c28ba;p=linux.git RDMA/erdma: Report atomic capacity when hardware supports atomic feature Introduce "capacity flags" field at where hardware put all zeros originally in "query device" response. Using this field, hardware can report atomic feature if supports. Signed-off-by: Cheng Xu Link: https://lore.kernel.org/r/20221107021845.44598-3-chengyou@linux.alibaba.com Signed-off-by: Leon Romanovsky --- diff --git a/drivers/infiniband/hw/erdma/erdma.h b/drivers/infiniband/hw/erdma/erdma.h index 730783fbc8949..bb23d897c7108 100644 --- a/drivers/infiniband/hw/erdma/erdma.h +++ b/drivers/infiniband/hw/erdma/erdma.h @@ -124,6 +124,7 @@ struct erdma_devattr { u32 fw_version; unsigned char peer_addr[ETH_ALEN]; + unsigned long cap_flags; int numa_node; enum erdma_cc_alg cc; diff --git a/drivers/infiniband/hw/erdma/erdma_hw.h b/drivers/infiniband/hw/erdma/erdma_hw.h index 2a9a4c73d52cd..808e7ee56d931 100644 --- a/drivers/infiniband/hw/erdma/erdma_hw.h +++ b/drivers/infiniband/hw/erdma/erdma_hw.h @@ -303,6 +303,7 @@ struct erdma_cmdq_destroy_qp_req { /* cap qword 0 definition */ #define ERDMA_CMD_DEV_CAP_MAX_CQE_MASK GENMASK_ULL(47, 40) +#define ERDMA_CMD_DEV_CAP_FLAGS_MASK GENMASK_ULL(31, 24) #define ERDMA_CMD_DEV_CAP_MAX_RECV_WR_MASK GENMASK_ULL(23, 16) #define ERDMA_CMD_DEV_CAP_MAX_MR_SIZE_MASK GENMASK_ULL(7, 0) @@ -314,6 +315,10 @@ struct erdma_cmdq_destroy_qp_req { #define ERDMA_NQP_PER_QBLOCK 1024 +enum { + ERDMA_DEV_CAP_FLAGS_ATOMIC = 1 << 7, +}; + #define ERDMA_CMD_INFO0_FW_VER_MASK GENMASK_ULL(31, 0) /* CQE hdr */ diff --git a/drivers/infiniband/hw/erdma/erdma_main.c b/drivers/infiniband/hw/erdma/erdma_main.c index 49778bb294ae4..e44b06fea5957 100644 --- a/drivers/infiniband/hw/erdma/erdma_main.c +++ b/drivers/infiniband/hw/erdma/erdma_main.c @@ -374,6 +374,7 @@ static int erdma_dev_attrs_init(struct erdma_dev *dev) dev->attrs.max_qp = ERDMA_NQP_PER_QBLOCK * ERDMA_GET_CAP(QBLOCK, cap1); dev->attrs.max_mr = dev->attrs.max_qp << 1; dev->attrs.max_cq = dev->attrs.max_qp << 1; + dev->attrs.cap_flags = ERDMA_GET_CAP(FLAGS, cap0); dev->attrs.max_send_wr = ERDMA_MAX_SEND_WR; dev->attrs.max_ord = ERDMA_MAX_ORD; diff --git a/drivers/infiniband/hw/erdma/erdma_verbs.c b/drivers/infiniband/hw/erdma/erdma_verbs.c index f3bf87f17527f..d843ce1f35f3d 100644 --- a/drivers/infiniband/hw/erdma/erdma_verbs.c +++ b/drivers/infiniband/hw/erdma/erdma_verbs.c @@ -288,6 +288,10 @@ int erdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr, attr->max_mw = dev->attrs.max_mw; attr->max_fast_reg_page_list_len = ERDMA_MAX_FRMR_PA; attr->page_size_cap = ERDMA_PAGE_SIZE_SUPPORT; + + if (dev->attrs.cap_flags & ERDMA_DEV_CAP_FLAGS_ATOMIC) + attr->atomic_cap = IB_ATOMIC_GLOB; + attr->fw_ver = dev->attrs.fw_version; if (dev->netdev)